kernel-vserver-2.3.patch

   1 diff -NurpP --minimal linux-4.4.111/Documentation/vserver/debug.txt linux-4.4.111-vs2.3.9.5/Documentation/vserver/debug.txt
   2 --- linux-4.4.111/Documentation/vserver/debug.txt       1970-01-01 00:00:00.000000000 +0000
   3 +++ linux-4.4.111-vs2.3.9.5/Documentation/vserver/debug.txt     2018-01-09 16:36:20.000000000 +0000
   4 @@ -0,0 +1,154 @@
   5 +
   6 +debug_cvirt:
   7 +
   8 + 2   4 "vx_map_tgid: %p/%llx: %d -> %d"
   9 +       "vx_rmap_tgid: %p/%llx: %d -> %d"
  10 +
  11 +debug_dlim:
  12 +
  13 + 0   1 "ALLOC (%p,#%d)%c inode (%d)"
  14 +       "FREE  (%p,#%d)%c inode"
  15 + 1   2 "ALLOC (%p,#%d)%c %lld bytes (%d)"
  16 +       "FREE  (%p,#%d)%c %lld bytes"
  17 + 2   4 "ADJUST: %lld,%lld on %ld,%ld [mult=%d]"
  18 + 3   8 "ext3_has_free_blocks(%p): %lu<%lu+1, %c, %u!=%u r=%d"
  19 +       "ext3_has_free_blocks(%p): free=%lu, root=%lu"
  20 +       "rcu_free_dl_info(%p)"
  21 + 4  10 "alloc_dl_info(%p,%d) = %p"
  22 +       "dealloc_dl_info(%p)"
  23 +       "get_dl_info(%p[#%d.%d])"
  24 +       "put_dl_info(%p[#%d.%d])"
  25 + 5  20 "alloc_dl_info(%p,%d)*"
  26 + 6  40 "__hash_dl_info: %p[#%d]"
  27 +       "__unhash_dl_info: %p[#%d]"
  28 + 7  80 "locate_dl_info(%p,#%d) = %p"
  29 +
  30 +debug_misc:
  31 +
  32 + 0   1 "destroy_dqhash: %p [#0x%08x] c=%d"
  33 +       "new_dqhash: %p [#0x%08x]"
  34 +       "vroot[%d]_clr_dev: dev=%p[%lu,%d:%d]"
  35 +       "vroot[%d]_get_real_bdev: dev=%p[%lu,%d:%d]"
  36 +       "vroot[%d]_set_dev: dev=%p[%lu,%d:%d]"
  37 +       "vroot_get_real_bdev not set"
  38 + 1   2 "cow_break_link(?%s?)"
  39 +       "temp copy ?%s?"
  40 + 2   4 "dentry_open(new): %p"
  41 +       "dentry_open(old): %p"
  42 +       "lookup_create(new): %p"
  43 +       "old path ?%s?"
  44 +       "path_lookup(old): %d"
  45 +       "vfs_create(new): %d"
  46 +       "vfs_rename: %d"
  47 +       "vfs_sendfile: %d"
  48 + 3   8 "fput(new_file=%p[#%d])"
  49 +       "fput(old_file=%p[#%d])"
  50 + 4  10 "vx_info_kill(%p[#%d],%d,%d) = %d"
  51 +       "vx_info_kill(%p[#%d],%d,%d)*"
  52 + 5  20 "vs_reboot(%p[#%d],%d)"
  53 + 6  40 "dropping task %p[#%u,%u] for %p[#%u,%u]"
  54 +
  55 +debug_net:
  56 +
  57 + 2   4 "nx_addr_conflict(%p,%p) %d.%d,%d.%d"
  58 + 3   8 "inet_bind(%p) %d.%d.%d.%d, %d.%d.%d.%d, %d.%d.%d.%d"
  59 +       "inet_bind(%p)* %p,%p;%lx %d.%d.%d.%d"
  60 + 4  10 "ip_route_connect(%p) %p,%p;%lx"
  61 + 5  20 "__addr_in_socket(%p,%d.%d.%d.%d) %p:%d.%d.%d.%d %p;%lx"
  62 + 6  40 "sk,egf: %p [#%d] (from %d)"
  63 +       "sk,egn: %p [#%d] (from %d)"
  64 +       "sk,req: %p [#%d] (from %d)"
  65 +       "sk: %p [#%d] (from %d)"
  66 +       "tw: %p [#%d] (from %d)"
  67 + 7  80 "__sock_recvmsg: %p[%p,%p,%p;%d]:%d/%d"
  68 +       "__sock_sendmsg: %p[%p,%p,%p;%d]:%d/%d"
  69 +
  70 +debug_nid:
  71 +
  72 + 0   1 "__lookup_nx_info(#%u): %p[#%u]"
  73 +       "alloc_nx_info(%d) = %p"
  74 +       "create_nx_info(%d) (dynamic rejected)"
  75 +       "create_nx_info(%d) = %p (already there)"
  76 +       "create_nx_info(%d) = %p (new)"
  77 +       "dealloc_nx_info(%p)"
  78 + 1   2 "alloc_nx_info(%d)*"
  79 +       "create_nx_info(%d)*"
  80 + 2   4 "get_nx_info(%p[#%d.%d])"
  81 +       "put_nx_info(%p[#%d.%d])"
  82 + 3   8 "claim_nx_info(%p[#%d.%d.%d]) %p"
  83 +       "clr_nx_info(%p[#%d.%d])"
  84 +       "init_nx_info(%p[#%d.%d])"
  85 +       "release_nx_info(%p[#%d.%d.%d]) %p"
  86 +       "set_nx_info(%p[#%d.%d])"
  87 + 4  10 "__hash_nx_info: %p[#%d]"
  88 +       "__nx_dynamic_id: [#%d]"
  89 +       "__unhash_nx_info: %p[#%d.%d.%d]"
  90 + 5  20 "moved task %p into nxi:%p[#%d]"
  91 +       "nx_migrate_task(%p,%p[#%d.%d.%d])"
  92 +       "task_get_nx_info(%p)"
  93 + 6  40 "nx_clear_persistent(%p[#%d])"
  94 +
  95 +debug_quota:
  96 +
  97 + 0   1 "quota_sync_dqh(%p,%d) discard inode %p"
  98 + 1   2 "quota_sync_dqh(%p,%d)"
  99 +       "sync_dquots(%p,%d)"
 100 +       "sync_dquots_dqh(%p,%d)"
 101 + 3   8 "do_quotactl(%p,%d,cmd=%d,id=%d,%p)"
 102 +
 103 +debug_switch:
 104 +
 105 + 0   1 "vc: VCMD_%02d_%d[%d], %d,%p [%d,%d,%x,%x]"
 106 + 1   2 "vc: VCMD_%02d_%d[%d] = %08lx(%ld) [%d,%d]"
 107 + 4  10 "%s: (%s %s) returned %s with %d"
 108 +
 109 +debug_tag:
 110 +
 111 + 7  80 "dx_parse_tag(?%s?): %d:#%d"
 112 +       "dx_propagate_tag(%p[#%lu.%d]): %d,%d"
 113 +
 114 +debug_xid:
 115 +
 116 + 0   1 "__lookup_vx_info(#%u): %p[#%u]"
 117 +       "alloc_vx_info(%d) = %p"
 118 +       "alloc_vx_info(%d)*"
 119 +       "create_vx_info(%d) (dynamic rejected)"
 120 +       "create_vx_info(%d) = %p (already there)"
 121 +       "create_vx_info(%d) = %p (new)"
 122 +       "dealloc_vx_info(%p)"
 123 +       "loc_vx_info(%d) = %p (found)"
 124 +       "loc_vx_info(%d) = %p (new)"
 125 +       "loc_vx_info(%d) = %p (not available)"
 126 + 1   2 "create_vx_info(%d)*"
 127 +       "loc_vx_info(%d)*"
 128 + 2   4 "get_vx_info(%p[#%d.%d])"
 129 +       "put_vx_info(%p[#%d.%d])"
 130 + 3   8 "claim_vx_info(%p[#%d.%d.%d]) %p"
 131 +       "clr_vx_info(%p[#%d.%d])"
 132 +       "init_vx_info(%p[#%d.%d])"
 133 +       "release_vx_info(%p[#%d.%d.%d]) %p"
 134 +       "set_vx_info(%p[#%d.%d])"
 135 + 4  10 "__hash_vx_info: %p[#%d]"
 136 +       "__unhash_vx_info: %p[#%d.%d.%d]"
 137 +       "__vx_dynamic_id: [#%d]"
 138 + 5  20 "enter_vx_info(%p[#%d],%p) %p[#%d,%p]"
 139 +       "leave_vx_info(%p[#%d,%p]) %p[#%d,%p]"
 140 +       "moved task %p into vxi:%p[#%d]"
 141 +       "task_get_vx_info(%p)"
 142 +       "vx_migrate_task(%p,%p[#%d.%d])"
 143 + 6  40 "vx_clear_persistent(%p[#%d])"
 144 +       "vx_exit_init(%p[#%d],%p[#%d,%d,%d])"
 145 +       "vx_set_init(%p[#%d],%p[#%d,%d,%d])"
 146 +       "vx_set_persistent(%p[#%d])"
 147 +       "vx_set_reaper(%p[#%d],%p[#%d,%d])"
 148 + 7  80 "vx_child_reaper(%p[#%u,%u]) = %p[#%u,%u]"
 149 +
 150 +
 151 +debug_limit:
 152 +
 153 + n 2^n "vx_acc_cres[%5d,%s,%2d]: %5d%s"
 154 +       "vx_cres_avail[%5d,%s,%2d]: %5ld > %5d + %5d"
 155 +
 156 + m 2^m "vx_acc_page[%5d,%s,%2d]: %5d%s"
 157 +       "vx_acc_pages[%5d,%s,%2d]: %5d += %5d"
 158 +       "vx_pages_avail[%5d,%s,%2d]: %5ld > %5d + %5d"
 159 diff -NurpP --minimal linux-4.4.111/arch/alpha/Kconfig linux-4.4.111-vs2.3.9.5/arch/alpha/Kconfig
 160 --- linux-4.4.111/arch/alpha/Kconfig    2016-07-05 04:11:34.000000000 +0000
 161 +++ linux-4.4.111-vs2.3.9.5/arch/alpha/Kconfig  2018-01-09 16:36:20.000000000 +0000
 162 @@ -745,6 +745,8 @@ config DUMMY_CONSOLE
 163         depends on VGA_HOSE
 164         default y
 165
 166 +source "kernel/vserver/Kconfig"
 167 +
 168  source "security/Kconfig"
 169
 170  source "crypto/Kconfig"
 171 diff -NurpP --minimal linux-4.4.111/arch/alpha/kernel/systbls.S linux-4.4.111-vs2.3.9.5/arch/alpha/kernel/systbls.S
 172 --- linux-4.4.111/arch/alpha/kernel/systbls.S   2015-07-06 20:41:36.000000000 +0000
 173 +++ linux-4.4.111-vs2.3.9.5/arch/alpha/kernel/systbls.S 2018-01-09 16:36:20.000000000 +0000
 174 @@ -446,7 +446,7 @@ sys_call_table:
 175         .quad sys_stat64                        /* 425 */
 176         .quad sys_lstat64
 177         .quad sys_fstat64
 178 -       .quad sys_ni_syscall                    /* sys_vserver */
 179 +       .quad sys_vserver                       /* sys_vserver */
 180         .quad sys_ni_syscall                    /* sys_mbind */
 181         .quad sys_ni_syscall                    /* sys_get_mempolicy */
 182         .quad sys_ni_syscall                    /* sys_set_mempolicy */
 183 diff -NurpP --minimal linux-4.4.111/arch/alpha/kernel/traps.c linux-4.4.111-vs2.3.9.5/arch/alpha/kernel/traps.c
 184 --- linux-4.4.111/arch/alpha/kernel/traps.c     2015-07-06 20:41:36.000000000 +0000
 185 +++ linux-4.4.111-vs2.3.9.5/arch/alpha/kernel/traps.c   2018-01-09 16:36:20.000000000 +0000
 186 @@ -174,7 +174,8 @@ die_if_kernel(char * str, struct pt_regs
 187  #ifdef CONFIG_SMP
 188         printk("CPU %d ", hard_smp_processor_id());
 189  #endif
 190 -       printk("%s(%d): %s %ld\n", current->comm, task_pid_nr(current), str, err);
 191 +       printk("%s(%d:#%u): %s %ld\n", current->comm,
 192 +               task_pid_nr(current), current->xid, str, err);
 193         dik_show_regs(regs, r9_15);
 194         add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
 195         dik_show_trace((unsigned long *)(regs+1));
 196 diff -NurpP --minimal linux-4.4.111/arch/arm/Kconfig linux-4.4.111-vs2.3.9.5/arch/arm/Kconfig
 197 --- linux-4.4.111/arch/arm/Kconfig      2016-07-05 04:14:23.000000000 +0000
 198 +++ linux-4.4.111-vs2.3.9.5/arch/arm/Kconfig    2018-01-09 16:36:20.000000000 +0000
 199 @@ -2159,6 +2159,8 @@ source "fs/Kconfig"
 200
 201  source "arch/arm/Kconfig.debug"
 202
 203 +source "kernel/vserver/Kconfig"
 204 +
 205  source "security/Kconfig"
 206
 207  source "crypto/Kconfig"
 208 diff -NurpP --minimal linux-4.4.111/arch/arm/kernel/calls.S linux-4.4.111-vs2.3.9.5/arch/arm/kernel/calls.S
 209 --- linux-4.4.111/arch/arm/kernel/calls.S       2016-07-05 04:14:26.000000000 +0000
 210 +++ linux-4.4.111-vs2.3.9.5/arch/arm/kernel/calls.S     2018-01-09 16:36:20.000000000 +0000
 211 @@ -322,7 +322,7 @@
 212  /* 310 */      CALL(sys_request_key)
 213                 CALL(sys_keyctl)
 214                 CALL(ABI(sys_semtimedop, sys_oabi_semtimedop))
 215 -/* vserver */  CALL(sys_ni_syscall)
 216 +               CALL(sys_vserver)
 217                 CALL(sys_ioprio_set)
 218  /* 315 */      CALL(sys_ioprio_get)
 219                 CALL(sys_inotify_init)
 220 diff -NurpP --minimal linux-4.4.111/arch/arm/kernel/traps.c linux-4.4.111-vs2.3.9.5/arch/arm/kernel/traps.c
 221 --- linux-4.4.111/arch/arm/kernel/traps.c       2018-01-11 07:57:02.000000000 +0000
 222 +++ linux-4.4.111-vs2.3.9.5/arch/arm/kernel/traps.c     2018-01-09 16:36:20.000000000 +0000
 223 @@ -258,8 +258,8 @@ static int __die(const char *str, int er
 224
 225         print_modules();
 226         __show_regs(regs);
 227 -       pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n",
 228 -                TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), end_of_stack(tsk));
 229 +       pr_emerg("Process %.*s (pid: %d:%u, stack limit = 0x%p)\n",
 230 +                TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), tsk->xid, end_of_stack(tsk));
 231
 232         if (!user_mode(regs) || in_interrupt()) {
 233                 dump_mem(KERN_EMERG, "Stack: ", regs->ARM_sp,
 234 diff -NurpP --minimal linux-4.4.111/arch/cris/Kconfig linux-4.4.111-vs2.3.9.5/arch/cris/Kconfig
 235 --- linux-4.4.111/arch/cris/Kconfig     2016-07-05 04:14:27.000000000 +0000
 236 +++ linux-4.4.111-vs2.3.9.5/arch/cris/Kconfig   2018-01-09 16:36:20.000000000 +0000
 237 @@ -581,6 +581,8 @@ source "fs/Kconfig"
 238
 239  source "arch/cris/Kconfig.debug"
 240
 241 +source "kernel/vserver/Kconfig"
 242 +
 243  source "security/Kconfig"
 244
 245  source "crypto/Kconfig"
 246 diff -NurpP --minimal linux-4.4.111/arch/ia64/Kconfig linux-4.4.111-vs2.3.9.5/arch/ia64/Kconfig
 247 --- linux-4.4.111/arch/ia64/Kconfig     2016-07-05 04:11:39.000000000 +0000
 248 +++ linux-4.4.111-vs2.3.9.5/arch/ia64/Kconfig   2018-01-09 16:36:21.000000000 +0000
 249 @@ -606,6 +606,8 @@ source "fs/Kconfig"
 250
 251  source "arch/ia64/Kconfig.debug"
 252
 253 +source "kernel/vserver/Kconfig"
 254 +
 255  source "security/Kconfig"
 256
 257  source "crypto/Kconfig"
 258 diff -NurpP --minimal linux-4.4.111/arch/ia64/kernel/entry.S linux-4.4.111-vs2.3.9.5/arch/ia64/kernel/entry.S
 259 --- linux-4.4.111/arch/ia64/kernel/entry.S      2016-07-05 04:14:27.000000000 +0000
 260 +++ linux-4.4.111-vs2.3.9.5/arch/ia64/kernel/entry.S    2018-01-09 16:36:21.000000000 +0000
 261 @@ -1694,7 +1694,7 @@ sys_call_table:
 262         data8 sys_mq_notify
 263         data8 sys_mq_getsetattr
 264         data8 sys_kexec_load
 265 -       data8 sys_ni_syscall                    // reserved for vserver
 266 +       data8 sys_vserver
 267         data8 sys_waitid                        // 1270
 268         data8 sys_add_key
 269         data8 sys_request_key
 270 diff -NurpP --minimal linux-4.4.111/arch/ia64/kernel/ptrace.c linux-4.4.111-vs2.3.9.5/arch/ia64/kernel/ptrace.c
 271 --- linux-4.4.111/arch/ia64/kernel/ptrace.c     2015-04-12 22:12:50.000000000 +0000
 272 +++ linux-4.4.111-vs2.3.9.5/arch/ia64/kernel/ptrace.c   2018-01-09 16:36:21.000000000 +0000
 273 @@ -21,6 +21,7 @@
 274  #include <linux/regset.h>
 275  #include <linux/elf.h>
 276  #include <linux/tracehook.h>
 277 +#include <linux/vs_base.h>
 278
 279  #include <asm/pgtable.h>
 280  #include <asm/processor.h>
 281 diff -NurpP --minimal linux-4.4.111/arch/ia64/kernel/traps.c linux-4.4.111-vs2.3.9.5/arch/ia64/kernel/traps.c
 282 --- linux-4.4.111/arch/ia64/kernel/traps.c      2015-04-12 22:12:50.000000000 +0000
 283 +++ linux-4.4.111-vs2.3.9.5/arch/ia64/kernel/traps.c    2018-01-09 16:36:21.000000000 +0000
 284 @@ -60,8 +60,9 @@ die (const char *str, struct pt_regs *re
 285         put_cpu();
 286
 287         if (++die.lock_owner_depth < 3) {
 288 -               printk("%s[%d]: %s %ld [%d]\n",
 289 -               current->comm, task_pid_nr(current), str, err, ++die_counter);
 290 +               printk("%s[%d:#%u]: %s %ld [%d]\n",
 291 +                       current->comm, task_pid_nr(current), current->xid,
 292 +                       str, err, ++die_counter);
 293                 if (notify_die(DIE_OOPS, str, regs, err, 255, SIGSEGV)
 294                     != NOTIFY_STOP)
 295                         show_regs(regs);
 296 @@ -324,8 +325,9 @@ handle_fpu_swa (int fp_fault, struct pt_
 297                         if ((last.count & 15) < 5 && (ia64_fetchadd(1, &last.count, acq) & 15) < 5) {
 298                                 last.time = current_jiffies + 5 * HZ;
 299                                 printk(KERN_WARNING
 300 -                                       "%s(%d): floating-point assist fault at ip %016lx, isr %016lx\n",
 301 -                                       current->comm, task_pid_nr(current), regs->cr_iip + ia64_psr(regs)->ri, isr);
 302 +                                       "%s(%d:#%u): floating-point assist fault at ip %016lx, isr %016lx\n",
 303 +                                       current->comm, task_pid_nr(current), current->xid,
 304 +                                       regs->cr_iip + ia64_psr(regs)->ri, isr);
 305                         }
 306                 }
 307         }
 308 diff -NurpP --minimal linux-4.4.111/arch/m32r/kernel/traps.c linux-4.4.111-vs2.3.9.5/arch/m32r/kernel/traps.c
 309 --- linux-4.4.111/arch/m32r/kernel/traps.c      2015-04-12 22:12:50.000000000 +0000
 310 +++ linux-4.4.111-vs2.3.9.5/arch/m32r/kernel/traps.c    2018-01-09 16:36:21.000000000 +0000
 311 @@ -184,8 +184,9 @@ static void show_registers(struct pt_reg
 312         } else {
 313                 printk("SPI: %08lx\n", sp);
 314         }
 315 -       printk("Process %s (pid: %d, process nr: %d, stackpage=%08lx)",
 316 -               current->comm, task_pid_nr(current), 0xffff & i, 4096+(unsigned long)current);
 317 +       printk("Process %s (pid: %d:#%u, process nr: %d, stackpage=%08lx)",
 318 +               current->comm, task_pid_nr(current), current->xid,
 319 +               0xffff & i, 4096+(unsigned long)current);
 320
 321         /*
 322          * When in-kernel, we also print out the stack and code at the
 323 diff -NurpP --minimal linux-4.4.111/arch/m68k/Kconfig linux-4.4.111-vs2.3.9.5/arch/m68k/Kconfig
 324 --- linux-4.4.111/arch/m68k/Kconfig     2016-07-05 04:11:39.000000000 +0000
 325 +++ linux-4.4.111-vs2.3.9.5/arch/m68k/Kconfig   2018-01-09 16:36:21.000000000 +0000
 326 @@ -164,6 +164,8 @@ source "fs/Kconfig"
 327
 328  source "arch/m68k/Kconfig.debug"
 329
 330 +source "kernel/vserver/Kconfig"
 331 +
 332  source "security/Kconfig"
 333
 334  source "crypto/Kconfig"
 335 diff -NurpP --minimal linux-4.4.111/arch/mips/Kconfig linux-4.4.111-vs2.3.9.5/arch/mips/Kconfig
 336 --- linux-4.4.111/arch/mips/Kconfig     2018-01-11 07:57:04.000000000 +0000
 337 +++ linux-4.4.111-vs2.3.9.5/arch/mips/Kconfig   2018-01-09 16:36:21.000000000 +0000
 338 @@ -3026,6 +3026,8 @@ source "fs/Kconfig"
 339
 340  source "arch/mips/Kconfig.debug"
 341
 342 +source "kernel/vserver/Kconfig"
 343 +
 344  source "security/Kconfig"
 345
 346  source "crypto/Kconfig"
 347 diff -NurpP --minimal linux-4.4.111/arch/mips/kernel/ptrace.c linux-4.4.111-vs2.3.9.5/arch/mips/kernel/ptrace.c
 348 --- linux-4.4.111/arch/mips/kernel/ptrace.c     2018-01-11 07:57:05.000000000 +0000
 349 +++ linux-4.4.111-vs2.3.9.5/arch/mips/kernel/ptrace.c   2018-01-09 16:36:21.000000000 +0000
 350 @@ -30,6 +30,7 @@
 351  #include <linux/audit.h>
 352  #include <linux/seccomp.h>
 353  #include <linux/ftrace.h>
 354 +#include <linux/vs_base.h>
 355
 356  #include <asm/byteorder.h>
 357  #include <asm/cpu.h>
 358 @@ -690,6 +691,9 @@ long arch_ptrace(struct task_struct *chi
 359         void __user *datavp = (void __user *) data;
 360         unsigned long __user *datalp = (void __user *) data;
 361
 362 +       if (!vx_check(vx_task_xid(child), VS_WATCH_P | VS_IDENT))
 363 +               goto out;
 364 +
 365         switch (request) {
 366         /* when I and D space are separate, these will need to be fixed. */
 367         case PTRACE_PEEKTEXT: /* read word at location addr. */
 368 diff -NurpP --minimal linux-4.4.111/arch/mips/kernel/scall32-o32.S linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall32-o32.S
 369 --- linux-4.4.111/arch/mips/kernel/scall32-o32.S        2018-01-11 07:57:05.000000000 +0000
 370 +++ linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall32-o32.S      2018-01-09 16:36:21.000000000 +0000
 371 @@ -512,7 +512,7 @@ EXPORT(sys_call_table)
 372         PTR     sys_mq_timedreceive
 373         PTR     sys_mq_notify                   /* 4275 */
 374         PTR     sys_mq_getsetattr
 375 -       PTR     sys_ni_syscall                  /* sys_vserver */
 376 +       PTR     sys_vserver
 377         PTR     sys_waitid
 378         PTR     sys_ni_syscall                  /* available, was setaltroot */
 379         PTR     sys_add_key                     /* 4280 */
 380 diff -NurpP --minimal linux-4.4.111/arch/mips/kernel/scall64-64.S linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall64-64.S
 381 --- linux-4.4.111/arch/mips/kernel/scall64-64.S 2018-01-11 07:57:05.000000000 +0000
 382 +++ linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall64-64.S       2018-01-09 16:36:21.000000000 +0000
 383 @@ -349,7 +349,7 @@ EXPORT(sys_call_table)
 384         PTR     sys_mq_timedreceive
 385         PTR     sys_mq_notify
 386         PTR     sys_mq_getsetattr               /* 5235 */
 387 -       PTR     sys_ni_syscall                  /* sys_vserver */
 388 +       PTR     sys_vserver
 389         PTR     sys_waitid
 390         PTR     sys_ni_syscall                  /* available, was setaltroot */
 391         PTR     sys_add_key
 392 diff -NurpP --minimal linux-4.4.111/arch/mips/kernel/scall64-n32.S linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall64-n32.S
 393 --- linux-4.4.111/arch/mips/kernel/scall64-n32.S        2018-01-11 07:57:05.000000000 +0000
 394 +++ linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall64-n32.S      2018-01-09 16:36:21.000000000 +0000
 395 @@ -339,7 +339,7 @@ EXPORT(sysn32_call_table)
 396         PTR     compat_sys_mq_timedreceive
 397         PTR     compat_sys_mq_notify
 398         PTR     compat_sys_mq_getsetattr
 399 -       PTR     sys_ni_syscall                  /* 6240, sys_vserver */
 400 +       PTR     sys32_vserver                   /* 6240 */
 401         PTR     compat_sys_waitid
 402         PTR     sys_ni_syscall                  /* available, was setaltroot */
 403         PTR     sys_add_key
 404 diff -NurpP --minimal linux-4.4.111/arch/mips/kernel/scall64-o32.S linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall64-o32.S
 405 --- linux-4.4.111/arch/mips/kernel/scall64-o32.S        2018-01-11 07:57:05.000000000 +0000
 406 +++ linux-4.4.111-vs2.3.9.5/arch/mips/kernel/scall64-o32.S      2018-01-09 16:36:21.000000000 +0000
 407 @@ -495,7 +495,7 @@ EXPORT(sys32_call_table)
 408         PTR     compat_sys_mq_timedreceive
 409         PTR     compat_sys_mq_notify            /* 4275 */
 410         PTR     compat_sys_mq_getsetattr
 411 -       PTR     sys_ni_syscall                  /* sys_vserver */
 412 +       PTR     sys32_vserver
 413         PTR     compat_sys_waitid
 414         PTR     sys_ni_syscall                  /* available, was setaltroot */
 415         PTR     sys_add_key                     /* 4280 */
 416 diff -NurpP --minimal linux-4.4.111/arch/mips/kernel/traps.c linux-4.4.111-vs2.3.9.5/arch/mips/kernel/traps.c
 417 --- linux-4.4.111/arch/mips/kernel/traps.c      2018-01-11 07:57:05.000000000 +0000
 418 +++ linux-4.4.111-vs2.3.9.5/arch/mips/kernel/traps.c    2018-01-09 16:36:21.000000000 +0000
 419 @@ -353,9 +353,10 @@ void show_registers(struct pt_regs *regs
 420
 421         __show_regs(regs);
 422         print_modules();
 423 -       printk("Process %s (pid: %d, threadinfo=%p, task=%p, tls=%0*lx)\n",
 424 -              current->comm, current->pid, current_thread_info(), current,
 425 -             field, current_thread_info()->tp_value);
 426 +       printk("Process %s (pid: %d:#%u, threadinfo=%p, task=%p, tls=%0*lx)\n",
 427 +               current->comm, task_pid_nr(current), current->xid,
 428 +               current_thread_info(), current,
 429 +               field, current_thread_info()->tp_value);
 430         if (cpu_has_userlocal) {
 431                 unsigned long tls;
 432
 433 diff -NurpP --minimal linux-4.4.111/arch/parisc/Kconfig linux-4.4.111-vs2.3.9.5/arch/parisc/Kconfig
 434 --- linux-4.4.111/arch/parisc/Kconfig   2016-07-05 04:14:29.000000000 +0000
 435 +++ linux-4.4.111-vs2.3.9.5/arch/parisc/Kconfig 2018-01-09 16:36:21.000000000 +0000
 436 @@ -341,6 +341,8 @@ config SECCOMP
 437
 438           If unsure, say Y. Only embedded should say N here.
 439
 440 +source "kernel/vserver/Kconfig"
 441 +
 442  source "security/Kconfig"
 443
 444  source "crypto/Kconfig"
 445 diff -NurpP --minimal linux-4.4.111/arch/parisc/kernel/syscall_table.S linux-4.4.111-vs2.3.9.5/arch/parisc/kernel/syscall_table.S
 446 --- linux-4.4.111/arch/parisc/kernel/syscall_table.S    2018-01-11 07:57:05.000000000 +0000
 447 +++ linux-4.4.111-vs2.3.9.5/arch/parisc/kernel/syscall_table.S  2018-01-09 16:36:21.000000000 +0000
 448 @@ -358,7 +358,7 @@
 449         ENTRY_COMP(mbind)               /* 260 */
 450         ENTRY_COMP(get_mempolicy)
 451         ENTRY_COMP(set_mempolicy)
 452 -       ENTRY_SAME(ni_syscall)  /* 263: reserved for vserver */
 453 +       ENTRY_DIFF(vserver)
 454         ENTRY_SAME(add_key)
 455         ENTRY_SAME(request_key)         /* 265 */
 456         ENTRY_COMP(keyctl)
 457 diff -NurpP --minimal linux-4.4.111/arch/parisc/kernel/traps.c linux-4.4.111-vs2.3.9.5/arch/parisc/kernel/traps.c
 458 --- linux-4.4.111/arch/parisc/kernel/traps.c    2018-01-11 07:57:05.000000000 +0000
 459 +++ linux-4.4.111-vs2.3.9.5/arch/parisc/kernel/traps.c  2018-01-09 16:36:21.000000000 +0000
 460 @@ -235,8 +235,9 @@ void die_if_kernel(char *str, struct pt_
 461                         return; /* STFU */
 462
 463                 parisc_printk_ratelimited(1, regs,
 464 -                       KERN_CRIT "%s (pid %d): %s (code %ld) at " RFMT "\n",
 465 -                       current->comm, task_pid_nr(current), str, err, regs->iaoq[0]);
 466 +                       KERN_CRIT "%s (pid %d:#%u): %s (code %ld) at " RFMT "\n",
 467 +                       current->comm, task_pid_nr(current), current->xid,
 468 +                       str, err, regs->iaoq[0]);
 469
 470                 return;
 471         }
 472 @@ -266,8 +267,8 @@ void die_if_kernel(char *str, struct pt_
 473                 pdc_console_restart();
 474
 475         if (err)
 476 -               printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
 477 -                       current->comm, task_pid_nr(current), str, err);
 478 +               printk(KERN_CRIT "%s (pid %d:#%u): %s (code %ld)\n",
 479 +                       current->comm, task_pid_nr(current), current->xid, str, err);
 480
 481         /* Wot's wrong wif bein' racy? */
 482         if (current->thread.flags & PARISC_KERNEL_DEATH) {
 483 diff -NurpP --minimal linux-4.4.111/arch/powerpc/Kconfig linux-4.4.111-vs2.3.9.5/arch/powerpc/Kconfig
 484 --- linux-4.4.111/arch/powerpc/Kconfig  2018-01-11 07:57:05.000000000 +0000
 485 +++ linux-4.4.111-vs2.3.9.5/arch/powerpc/Kconfig        2018-01-09 16:36:21.000000000 +0000
 486 @@ -1080,6 +1080,8 @@ source "lib/Kconfig"
 487
 488  source "arch/powerpc/Kconfig.debug"
 489
 490 +source "kernel/vserver/Kconfig"
 491 +
 492  source "security/Kconfig"
 493
 494  source "crypto/Kconfig"
 495 diff -NurpP --minimal linux-4.4.111/arch/powerpc/include/uapi/asm/unistd.h linux-4.4.111-vs2.3.9.5/arch/powerpc/include/uapi/asm/unistd.h
 496 --- linux-4.4.111/arch/powerpc/include/uapi/asm/unistd.h        2016-07-05 04:14:29.000000000 +0000
 497 +++ linux-4.4.111-vs2.3.9.5/arch/powerpc/include/uapi/asm/unistd.h      2018-01-09 16:36:21.000000000 +0000
 498 @@ -275,7 +275,7 @@
 499  #endif
 500  #define __NR_rtas              255
 501  #define __NR_sys_debug_setcontext 256
 502 -/* Number 257 is reserved for vserver */
 503 +#define __NR_vserver           257
 504  #define __NR_migrate_pages     258
 505  #define __NR_mbind             259
 506  #define __NR_get_mempolicy     260
 507 diff -NurpP --minimal linux-4.4.111/arch/powerpc/kernel/traps.c linux-4.4.111-vs2.3.9.5/arch/powerpc/kernel/traps.c
 508 --- linux-4.4.111/arch/powerpc/kernel/traps.c   2018-01-11 07:57:06.000000000 +0000
 509 +++ linux-4.4.111-vs2.3.9.5/arch/powerpc/kernel/traps.c 2018-01-09 16:36:21.000000000 +0000
 510 @@ -1315,8 +1315,9 @@ void nonrecoverable_exception(struct pt_
 511
 512  void trace_syscall(struct pt_regs *regs)
 513  {
 514 -       printk("Task: %p(%d), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld    %s\n",
 515 -              current, task_pid_nr(current), regs->nip, regs->link, regs->gpr[0],
 516 +       printk("Task: %p(%d:#%u), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld    %s\n",
 517 +              current, task_pid_nr(current), current->xid,
 518 +              regs->nip, regs->link, regs->gpr[0],
 519                regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());
 520  }
 521
 522 diff -NurpP --minimal linux-4.4.111/arch/s390/Kconfig linux-4.4.111-vs2.3.9.5/arch/s390/Kconfig
 523 --- linux-4.4.111/arch/s390/Kconfig     2018-01-11 07:57:06.000000000 +0000
 524 +++ linux-4.4.111-vs2.3.9.5/arch/s390/Kconfig   2018-01-09 16:36:21.000000000 +0000
 525 @@ -729,6 +729,8 @@ source "fs/Kconfig"
 526
 527  source "arch/s390/Kconfig.debug"
 528
 529 +source "kernel/vserver/Kconfig"
 530 +
 531  source "security/Kconfig"
 532
 533  source "crypto/Kconfig"
 534 diff -NurpP --minimal linux-4.4.111/arch/s390/include/asm/tlb.h linux-4.4.111-vs2.3.9.5/arch/s390/include/asm/tlb.h
 535 --- linux-4.4.111/arch/s390/include/asm/tlb.h   2015-07-06 20:41:37.000000000 +0000
 536 +++ linux-4.4.111-vs2.3.9.5/arch/s390/include/asm/tlb.h 2018-01-09 16:36:21.000000000 +0000
 537 @@ -24,6 +24,7 @@
 538  #include <linux/mm.h>
 539  #include <linux/pagemap.h>
 540  #include <linux/swap.h>
 541 +
 542  #include <asm/processor.h>
 543  #include <asm/pgalloc.h>
 544  #include <asm/tlbflush.h>
 545 diff -NurpP --minimal linux-4.4.111/arch/s390/include/uapi/asm/unistd.h linux-4.4.111-vs2.3.9.5/arch/s390/include/uapi/asm/unistd.h
 546 --- linux-4.4.111/arch/s390/include/uapi/asm/unistd.h   2016-07-05 04:14:30.000000000 +0000
 547 +++ linux-4.4.111-vs2.3.9.5/arch/s390/include/uapi/asm/unistd.h 2018-01-09 16:48:33.000000000 +0000
 548 @@ -200,7 +200,7 @@
 549  #define __NR_clock_gettime     260
 550  #define __NR_clock_getres      261
 551  #define __NR_clock_nanosleep   262
 552 -/* Number 263 is reserved for vserver */
 553 +#define __NR_vserver           263
 554  #define __NR_statfs64          265
 555  #define __NR_fstatfs64         266
 556  #define __NR_remap_file_pages  267
 557 diff -NurpP --minimal linux-4.4.111/arch/s390/kernel/ptrace.c linux-4.4.111-vs2.3.9.5/arch/s390/kernel/ptrace.c
 558 --- linux-4.4.111/arch/s390/kernel/ptrace.c     2018-01-11 07:57:07.000000000 +0000
 559 +++ linux-4.4.111-vs2.3.9.5/arch/s390/kernel/ptrace.c   2018-01-09 16:36:21.000000000 +0000
 560 @@ -21,6 +21,7 @@
 561  #include <linux/tracehook.h>
 562  #include <linux/seccomp.h>
 563  #include <linux/compat.h>
 564 +#include <linux/vs_base.h>
 565  #include <trace/syscall.h>
 566  #include <asm/segment.h>
 567  #include <asm/page.h>
 568 diff -NurpP --minimal linux-4.4.111/arch/s390/kernel/syscalls.S linux-4.4.111-vs2.3.9.5/arch/s390/kernel/syscalls.S
 569 --- linux-4.4.111/arch/s390/kernel/syscalls.S   2018-01-11 07:57:07.000000000 +0000
 570 +++ linux-4.4.111-vs2.3.9.5/arch/s390/kernel/syscalls.S 2018-01-09 16:36:21.000000000 +0000
 571 @@ -271,7 +271,7 @@ SYSCALL(sys_clock_settime,compat_sys_clo
 572  SYSCALL(sys_clock_gettime,compat_sys_clock_gettime)    /* 260 */
 573  SYSCALL(sys_clock_getres,compat_sys_clock_getres)
 574  SYSCALL(sys_clock_nanosleep,compat_sys_clock_nanosleep)
 575 -NI_SYSCALL                                             /* reserved for vserver */
 576 +SYSCALL(sys_vserver,sys_vserver,sys32_vserver)
 577  SYSCALL(sys_ni_syscall,compat_sys_s390_fadvise64_64)
 578  SYSCALL(sys_statfs64,compat_sys_statfs64)
 579  SYSCALL(sys_fstatfs64,compat_sys_fstatfs64)
 580 diff -NurpP --minimal linux-4.4.111/arch/sh/Kconfig linux-4.4.111-vs2.3.9.5/arch/sh/Kconfig
 581 --- linux-4.4.111/arch/sh/Kconfig       2016-07-05 04:11:46.000000000 +0000
 582 +++ linux-4.4.111-vs2.3.9.5/arch/sh/Kconfig     2018-01-09 16:36:21.000000000 +0000
 583 @@ -883,6 +883,8 @@ source "fs/Kconfig"
 584
 585  source "arch/sh/Kconfig.debug"
 586
 587 +source "kernel/vserver/Kconfig"
 588 +
 589  source "security/Kconfig"
 590
 591  source "crypto/Kconfig"
 592 diff -NurpP --minimal linux-4.4.111/arch/sh/kernel/irq.c linux-4.4.111-vs2.3.9.5/arch/sh/kernel/irq.c
 593 --- linux-4.4.111/arch/sh/kernel/irq.c  2016-07-05 04:11:46.000000000 +0000
 594 +++ linux-4.4.111-vs2.3.9.5/arch/sh/kernel/irq.c        2018-01-09 16:36:21.000000000 +0000
 595 @@ -14,6 +14,7 @@
 596  #include <linux/ftrace.h>
 597  #include <linux/delay.h>
 598  #include <linux/ratelimit.h>
 599 +// #include <linux/vs_context.h>
 600  #include <asm/processor.h>
 601  #include <asm/machvec.h>
 602  #include <asm/uaccess.h>
 603 diff -NurpP --minimal linux-4.4.111/arch/sparc/Kconfig linux-4.4.111-vs2.3.9.5/arch/sparc/Kconfig
 604 --- linux-4.4.111/arch/sparc/Kconfig    2018-01-11 07:57:07.000000000 +0000
 605 +++ linux-4.4.111-vs2.3.9.5/arch/sparc/Kconfig  2018-01-09 16:36:21.000000000 +0000
 606 @@ -561,6 +561,8 @@ source "fs/Kconfig"
 607
 608  source "arch/sparc/Kconfig.debug"
 609
 610 +source "kernel/vserver/Kconfig"
 611 +
 612  source "security/Kconfig"
 613
 614  source "crypto/Kconfig"
 615 diff -NurpP --minimal linux-4.4.111/arch/sparc/include/uapi/asm/unistd.h linux-4.4.111-vs2.3.9.5/arch/sparc/include/uapi/asm/unistd.h
 616 --- linux-4.4.111/arch/sparc/include/uapi/asm/unistd.h  2016-07-05 04:14:33.000000000 +0000
 617 +++ linux-4.4.111-vs2.3.9.5/arch/sparc/include/uapi/asm/unistd.h        2018-01-09 16:36:21.000000000 +0000
 618 @@ -332,7 +332,7 @@
 619  #define __NR_timer_getoverrun  264
 620  #define __NR_timer_delete      265
 621  #define __NR_timer_create      266
 622 -/* #define __NR_vserver                267 Reserved for VSERVER */
 623 +#define __NR_vserver           267
 624  #define __NR_io_setup          268
 625  #define __NR_io_destroy                269
 626  #define __NR_io_submit         270
 627 diff -NurpP --minimal linux-4.4.111/arch/sparc/kernel/systbls_32.S linux-4.4.111-vs2.3.9.5/arch/sparc/kernel/systbls_32.S
 628 --- linux-4.4.111/arch/sparc/kernel/systbls_32.S        2016-07-05 04:14:33.000000000 +0000
 629 +++ linux-4.4.111-vs2.3.9.5/arch/sparc/kernel/systbls_32.S      2018-01-09 16:36:21.000000000 +0000
 630 @@ -70,7 +70,7 @@ sys_call_table:
 631  /*250*/        .long sys_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_ni_syscall
 632  /*255*/        .long sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 633  /*260*/        .long sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
 634 -/*265*/        .long sys_timer_delete, sys_timer_create, sys_nis_syscall, sys_io_setup, sys_io_destroy
 635 +/*265*/        .long sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
 636  /*270*/        .long sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
 637  /*275*/        .long sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
 638  /*280*/        .long sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
 639 diff -NurpP --minimal linux-4.4.111/arch/sparc/kernel/systbls_64.S linux-4.4.111-vs2.3.9.5/arch/sparc/kernel/systbls_64.S
 640 --- linux-4.4.111/arch/sparc/kernel/systbls_64.S        2016-07-05 04:14:33.000000000 +0000
 641 +++ linux-4.4.111-vs2.3.9.5/arch/sparc/kernel/systbls_64.S      2018-01-09 16:36:21.000000000 +0000
 642 @@ -71,7 +71,7 @@ sys_call_table32:
 643  /*250*/        .word sys_mremap, compat_sys_sysctl, sys_getsid, sys_fdatasync, sys_nis_syscall
 644         .word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
 645  /*260*/        .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
 646 -       .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
 647 +       .word sys_timer_delete, compat_sys_timer_create, sys32_vserver, compat_sys_io_setup, sys_io_destroy
 648  /*270*/        .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
 649         .word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
 650  /*280*/        .word sys_tee, sys_add_key, sys_request_key, compat_sys_keyctl, compat_sys_openat
 651 @@ -152,7 +152,7 @@ sys_call_table:
 652  /*250*/        .word sys_64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nis_syscall
 653         .word sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 654  /*260*/        .word sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
 655 -       .word sys_timer_delete, sys_timer_create, sys_ni_syscall, sys_io_setup, sys_io_destroy
 656 +       .word sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
 657  /*270*/        .word sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
 658         .word sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
 659  /*280*/        .word sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
 660 diff -NurpP --minimal linux-4.4.111/arch/um/Kconfig.rest linux-4.4.111-vs2.3.9.5/arch/um/Kconfig.rest
 661 --- linux-4.4.111/arch/um/Kconfig.rest  2015-04-12 22:12:50.000000000 +0000
 662 +++ linux-4.4.111-vs2.3.9.5/arch/um/Kconfig.rest        2018-01-09 16:36:21.000000000 +0000
 663 @@ -12,6 +12,8 @@ source "arch/um/Kconfig.net"
 664
 665  source "fs/Kconfig"
 666
 667 +source "kernel/vserver/Kconfig"
 668 +
 669  source "security/Kconfig"
 670
 671  source "crypto/Kconfig"
 672 diff -NurpP --minimal linux-4.4.111/arch/x86/Kconfig linux-4.4.111-vs2.3.9.5/arch/x86/Kconfig
 673 --- linux-4.4.111/arch/x86/Kconfig      2018-01-11 07:57:08.000000000 +0000
 674 +++ linux-4.4.111-vs2.3.9.5/arch/x86/Kconfig    2018-01-09 16:36:21.000000000 +0000
 675 @@ -2672,6 +2672,8 @@ source "fs/Kconfig"
 676
 677  source "arch/x86/Kconfig.debug"
 678
 679 +source "kernel/vserver/Kconfig"
 680 +
 681  source "security/Kconfig"
 682
 683  source "crypto/Kconfig"
 684 diff -NurpP --minimal linux-4.4.111/arch/x86/entry/syscalls/syscall_32.tbl linux-4.4.111-vs2.3.9.5/arch/x86/entry/syscalls/syscall_32.tbl
 685 --- linux-4.4.111/arch/x86/entry/syscalls/syscall_32.tbl        2018-01-11 07:57:08.000000000 +0000
 686 +++ linux-4.4.111-vs2.3.9.5/arch/x86/entry/syscalls/syscall_32.tbl      2018-01-10 01:51:14.000000000 +0000
 687 @@ -279,7 +279,7 @@
 688  270    i386    tgkill                  sys_tgkill
 689  271    i386    utimes                  sys_utimes                      compat_sys_utimes
 690  272    i386    fadvise64_64            sys_fadvise64_64                sys32_fadvise64_64
 691 -273    i386    vserver
 692 +273    i386    vserver                 sys_vserver                     sys32_vserver
 693  274    i386    mbind                   sys_mbind
 694  275    i386    get_mempolicy           sys_get_mempolicy               compat_sys_get_mempolicy
 695  276    i386    set_mempolicy           sys_set_mempolicy
 696 diff -NurpP --minimal linux-4.4.111/arch/x86/entry/syscalls/syscall_64.tbl linux-4.4.111-vs2.3.9.5/arch/x86/entry/syscalls/syscall_64.tbl
 697 --- linux-4.4.111/arch/x86/entry/syscalls/syscall_64.tbl        2016-07-05 04:14:33.000000000 +0000
 698 +++ linux-4.4.111-vs2.3.9.5/arch/x86/entry/syscalls/syscall_64.tbl      2018-01-10 01:51:32.000000000 +0000
 699 @@ -242,7 +242,7 @@
 700  233    common  epoll_ctl               sys_epoll_ctl
 701  234    common  tgkill                  sys_tgkill
 702  235    common  utimes                  sys_utimes
 703 -236    64      vserver
 704 +236    64      vserver                 sys_vserver
 705  237    common  mbind                   sys_mbind
 706  238    common  set_mempolicy           sys_set_mempolicy
 707  239    common  get_mempolicy           sys_get_mempolicy
 708 diff -NurpP --minimal linux-4.4.111/block/ioprio.c linux-4.4.111-vs2.3.9.5/block/ioprio.c
 709 --- linux-4.4.111/block/ioprio.c        2018-01-11 07:57:12.000000000 +0000
 710 +++ linux-4.4.111-vs2.3.9.5/block/ioprio.c      2018-01-09 16:36:23.000000000 +0000
 711 @@ -28,6 +28,7 @@
 712  #include <linux/syscalls.h>
 713  #include <linux/security.h>
 714  #include <linux/pid_namespace.h>
 715 +#include <linux/vs_base.h>
 716
 717  int set_task_ioprio(struct task_struct *task, int ioprio)
 718  {
 719 @@ -105,6 +106,8 @@ SYSCALL_DEFINE3(ioprio_set, int, which,
 720                         else
 721                                 pgrp = find_vpid(who);
 722                         do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
 723 +                               if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
 724 +                                       continue;
 725                                 ret = set_task_ioprio(p, ioprio);
 726                                 if (ret)
 727                                         break;
 728 @@ -203,6 +206,8 @@ SYSCALL_DEFINE2(ioprio_get, int, which,
 729                         else
 730                                 pgrp = find_vpid(who);
 731                         do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
 732 +                               if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
 733 +                                       continue;
 734                                 tmpio = get_task_ioprio(p);
 735                                 if (tmpio < 0)
 736                                         continue;
 737 diff -NurpP --minimal linux-4.4.111/drivers/block/Kconfig linux-4.4.111-vs2.3.9.5/drivers/block/Kconfig
 738 --- linux-4.4.111/drivers/block/Kconfig 2016-07-05 04:14:35.000000000 +0000
 739 +++ linux-4.4.111-vs2.3.9.5/drivers/block/Kconfig       2018-01-09 16:36:23.000000000 +0000
 740 @@ -283,6 +283,13 @@ config BLK_DEV_CRYPTOLOOP
 741
 742  source "drivers/block/drbd/Kconfig"
 743
 744 +config BLK_DEV_VROOT
 745 +       tristate "Virtual Root device support"
 746 +       depends on QUOTACTL
 747 +       ---help---
 748 +         Saying Y here will allow you to use quota/fs ioctls on a shared
 749 +         partition within a virtual server without compromising security.
 750 +
 751  config BLK_DEV_NBD
 752         tristate "Network block device support"
 753         depends on NET
 754 diff -NurpP --minimal linux-4.4.111/drivers/block/Makefile linux-4.4.111-vs2.3.9.5/drivers/block/Makefile
 755 --- linux-4.4.111/drivers/block/Makefile        2016-07-05 04:14:35.000000000 +0000
 756 +++ linux-4.4.111-vs2.3.9.5/drivers/block/Makefile      2018-01-09 16:36:23.000000000 +0000
 757 @@ -32,6 +32,7 @@ obj-$(CONFIG_VIRTIO_BLK)      += virtio_blk.o
 758
 759  obj-$(CONFIG_BLK_DEV_SX8)      += sx8.o
 760  obj-$(CONFIG_BLK_DEV_HD)       += hd.o
 761 +obj-$(CONFIG_BLK_DEV_VROOT)    += vroot.o
 762
 763  obj-$(CONFIG_XEN_BLKDEV_FRONTEND)      += xen-blkfront.o
 764  obj-$(CONFIG_XEN_BLKDEV_BACKEND)       += xen-blkback/
 765 diff -NurpP --minimal linux-4.4.111/drivers/block/loop.c linux-4.4.111-vs2.3.9.5/drivers/block/loop.c
 766 --- linux-4.4.111/drivers/block/loop.c  2018-01-11 07:57:13.000000000 +0000
 767 +++ linux-4.4.111-vs2.3.9.5/drivers/block/loop.c        2018-01-09 23:00:25.000000000 +0000
 768 @@ -76,6 +76,7 @@
 769  #include <linux/miscdevice.h>
 770  #include <linux/falloc.h>
 771  #include <linux/uio.h>
 772 +#include <linux/vs_context.h>
 773  #include "loop.h"
 774
 775  #include <asm/uaccess.h>
 776 @@ -935,6 +936,7 @@ static int loop_set_fd(struct loop_devic
 777         lo->lo_blocksize = lo_blocksize;
 778         lo->lo_device = bdev;
 779         lo->lo_flags = lo_flags;
 780 +       lo->lo_xid = vx_current_xid();
 781         lo->lo_backing_file = file;
 782         lo->transfer = NULL;
 783         lo->ioctl = NULL;
 784 @@ -1055,6 +1057,7 @@ static int loop_clr_fd(struct loop_devic
 785         lo->lo_offset = 0;
 786         lo->lo_sizelimit = 0;
 787         lo->lo_encrypt_key_size = 0;
 788 +       lo->lo_xid = 0;
 789         memset(lo->lo_encrypt_key, 0, LO_KEY_SIZE);
 790         memset(lo->lo_crypt_name, 0, LO_NAME_SIZE);
 791         memset(lo->lo_file_name, 0, LO_NAME_SIZE);
 792 @@ -1101,7 +1104,7 @@ loop_set_status(struct loop_device *lo,
 793
 794         if (lo->lo_encrypt_key_size &&
 795             !uid_eq(lo->lo_key_owner, uid) &&
 796 -           !capable(CAP_SYS_ADMIN))
 797 +           !vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP))
 798                 return -EPERM;
 799         if (lo->lo_state != Lo_bound)
 800                 return -ENXIO;
 801 @@ -1202,7 +1205,8 @@ loop_get_status(struct loop_device *lo,
 802         memcpy(info->lo_crypt_name, lo->lo_crypt_name, LO_NAME_SIZE);
 803         info->lo_encrypt_type =
 804                 lo->lo_encryption ? lo->lo_encryption->number : 0;
 805 -       if (lo->lo_encrypt_key_size && capable(CAP_SYS_ADMIN)) {
 806 +       if (lo->lo_encrypt_key_size &&
 807 +               vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP)) {
 808                 info->lo_encrypt_key_size = lo->lo_encrypt_key_size;
 809                 memcpy(info->lo_encrypt_key, lo->lo_encrypt_key,
 810                        lo->lo_encrypt_key_size);
 811 @@ -1563,6 +1567,11 @@ static int lo_open(struct block_device *
 812                 goto out;
 813         }
 814
 815 +       if (!vx_check(lo->lo_xid, VS_IDENT|VS_HOSTID|VS_ADMIN_P)) {
 816 +               err = -EACCES;
 817 +               goto out;
 818 +       }
 819 +
 820         atomic_inc(&lo->lo_refcnt);
 821  out:
 822         mutex_unlock(&loop_index_mutex);
 823 diff -NurpP --minimal linux-4.4.111/drivers/block/loop.h linux-4.4.111-vs2.3.9.5/drivers/block/loop.h
 824 --- linux-4.4.111/drivers/block/loop.h  2016-07-05 04:14:35.000000000 +0000
 825 +++ linux-4.4.111-vs2.3.9.5/drivers/block/loop.h        2018-01-09 16:36:23.000000000 +0000
 826 @@ -43,6 +43,7 @@ struct loop_device {
 827         struct loop_func_table *lo_encryption;
 828         __u32           lo_init[2];
 829         kuid_t          lo_key_owner;   /* Who set the key */
 830 +       vxid_t          lo_xid;
 831         int             (*ioctl)(struct loop_device *, int cmd,
 832                                  unsigned long arg);
 833
 834 diff -NurpP --minimal linux-4.4.111/drivers/block/vroot.c linux-4.4.111-vs2.3.9.5/drivers/block/vroot.c
 835 --- linux-4.4.111/drivers/block/vroot.c 1970-01-01 00:00:00.000000000 +0000
 836 +++ linux-4.4.111-vs2.3.9.5/drivers/block/vroot.c       2018-01-11 07:37:22.000000000 +0000
 837 @@ -0,0 +1,291 @@
 838 +/*
 839 + *  linux/drivers/block/vroot.c
 840 + *
 841 + *  written by Herbert P?tzl, 9/11/2002
 842 + *  ported to 2.6.10 by Herbert P?tzl, 30/12/2004
 843 + *
 844 + *  based on the loop.c code by Theodore Ts'o.
 845 + *
 846 + * Copyright (C) 2002-2007 by Herbert P?tzl.
 847 + * Redistribution of this file is permitted under the
 848 + * GNU General Public License.
 849 + *
 850 + */
 851 +
 852 +#include <linux/module.h>
 853 +#include <linux/moduleparam.h>
 854 +#include <linux/file.h>
 855 +#include <linux/major.h>
 856 +#include <linux/blkdev.h>
 857 +#include <linux/slab.h>
 858 +
 859 +#include <linux/vroot.h>
 860 +#include <linux/vs_context.h>
 861 +
 862 +
 863 +static int max_vroot = 8;
 864 +
 865 +static struct vroot_device *vroot_dev;
 866 +static struct gendisk **disks;
 867 +
 868 +
 869 +static int vroot_set_dev(
 870 +       struct vroot_device *vr,
 871 +       struct block_device *bdev,
 872 +       unsigned int arg)
 873 +{
 874 +       struct block_device *real_bdev;
 875 +       struct file *file;
 876 +       struct inode *inode;
 877 +       int error;
 878 +
 879 +       error = -EBUSY;
 880 +       if (vr->vr_state != Vr_unbound)
 881 +               goto out;
 882 +
 883 +       error = -EBADF;
 884 +       file = fget(arg);
 885 +       if (!file)
 886 +               goto out;
 887 +
 888 +       error = -EINVAL;
 889 +       inode = file->f_path.dentry->d_inode;
 890 +
 891 +
 892 +       if (S_ISBLK(inode->i_mode)) {
 893 +               real_bdev = inode->i_bdev;
 894 +               vr->vr_device = real_bdev;
 895 +               __iget(real_bdev->bd_inode);
 896 +       } else
 897 +               goto out_fput;
 898 +
 899 +       vxdprintk(VXD_CBIT(misc, 0),
 900 +               "vroot[%d]_set_dev: dev=" VXF_DEV,
 901 +               vr->vr_number, VXD_DEV(real_bdev));
 902 +
 903 +       vr->vr_state = Vr_bound;
 904 +       error = 0;
 905 +
 906 + out_fput:
 907 +       fput(file);
 908 + out:
 909 +       return error;
 910 +}
 911 +
 912 +static int vroot_clr_dev(
 913 +       struct vroot_device *vr,
 914 +       struct block_device *bdev)
 915 +{
 916 +       struct block_device *real_bdev;
 917 +
 918 +       if (vr->vr_state != Vr_bound)
 919 +               return -ENXIO;
 920 +       if (vr->vr_refcnt > 1)  /* we needed one fd for the ioctl */
 921 +               return -EBUSY;
 922 +
 923 +       real_bdev = vr->vr_device;
 924 +
 925 +       vxdprintk(VXD_CBIT(misc, 0),
 926 +               "vroot[%d]_clr_dev: dev=" VXF_DEV,
 927 +               vr->vr_number, VXD_DEV(real_bdev));
 928 +
 929 +       bdput(real_bdev);
 930 +       vr->vr_state = Vr_unbound;
 931 +       vr->vr_device = NULL;
 932 +       return 0;
 933 +}
 934 +
 935 +
 936 +static int vr_ioctl(struct block_device *bdev, fmode_t mode,
 937 +       unsigned int cmd, unsigned long arg)
 938 +{
 939 +       struct vroot_device *vr = bdev->bd_disk->private_data;
 940 +       int err;
 941 +
 942 +       down(&vr->vr_ctl_mutex);
 943 +       switch (cmd) {
 944 +       case VROOT_SET_DEV:
 945 +               err = vroot_set_dev(vr, bdev, arg);
 946 +               break;
 947 +       case VROOT_CLR_DEV:
 948 +               err = vroot_clr_dev(vr, bdev);
 949 +               break;
 950 +       default:
 951 +               err = -EINVAL;
 952 +               break;
 953 +       }
 954 +       up(&vr->vr_ctl_mutex);
 955 +       return err;
 956 +}
 957 +
 958 +static int vr_open(struct block_device *bdev, fmode_t mode)
 959 +{
 960 +       struct vroot_device *vr = bdev->bd_disk->private_data;
 961 +
 962 +       down(&vr->vr_ctl_mutex);
 963 +       vr->vr_refcnt++;
 964 +       up(&vr->vr_ctl_mutex);
 965 +       return 0;
 966 +}
 967 +
 968 +static void vr_release(struct gendisk *disk, fmode_t mode)
 969 +{
 970 +       struct vroot_device *vr = disk->private_data;
 971 +
 972 +       down(&vr->vr_ctl_mutex);
 973 +       --vr->vr_refcnt;
 974 +       up(&vr->vr_ctl_mutex);
 975 +}
 976 +
 977 +static struct block_device_operations vr_fops = {
 978 +       .owner =        THIS_MODULE,
 979 +       .open =         vr_open,
 980 +       .release =      vr_release,
 981 +       .ioctl =        vr_ioctl,
 982 +};
 983 +
 984 +static blk_qc_t vroot_make_request(struct request_queue *q, struct bio *bio)
 985 +{
 986 +       printk("vroot_make_request %p, %p\n", q, bio);
 987 +       bio_io_error(bio);
 988 +       return BLK_QC_T_NONE;
 989 +}
 990 +
 991 +struct block_device *__vroot_get_real_bdev(struct block_device *bdev)
 992 +{
 993 +       struct inode *inode = bdev->bd_inode;
 994 +       struct vroot_device *vr;
 995 +       struct block_device *real_bdev;
 996 +       int minor = iminor(inode);
 997 +
 998 +       vr = &vroot_dev[minor];
 999 +       real_bdev = vr->vr_device;
1000 +
1001 +       vxdprintk(VXD_CBIT(misc, 0),
1002 +               "vroot[%d]_get_real_bdev: dev=" VXF_DEV,
1003 +               vr->vr_number, VXD_DEV(real_bdev));
1004 +
1005 +       if (vr->vr_state != Vr_bound)
1006 +               return ERR_PTR(-ENXIO);
1007 +
1008 +       __iget(real_bdev->bd_inode);
1009 +       return real_bdev;
1010 +}
1011 +
1012 +
1013 +
1014 +/*
1015 + * And now the modules code and kernel interface.
1016 + */
1017 +
1018 +module_param(max_vroot, int, 0);
1019 +
1020 +MODULE_PARM_DESC(max_vroot, "Maximum number of vroot devices (1-256)");
1021 +MODULE_LICENSE("GPL");
1022 +MODULE_ALIAS_BLOCKDEV_MAJOR(VROOT_MAJOR);
1023 +
1024 +MODULE_AUTHOR ("Herbert P?tzl");
1025 +MODULE_DESCRIPTION ("Virtual Root Device Mapper");
1026 +
1027 +
1028 +int __init vroot_init(void)
1029 +{
1030 +       int err, i;
1031 +
1032 +       if (max_vroot < 1 || max_vroot > 256) {
1033 +               max_vroot = MAX_VROOT_DEFAULT;
1034 +               printk(KERN_WARNING "vroot: invalid max_vroot "
1035 +                       "(must be between 1 and 256), "
1036 +                       "using default (%d)\n", max_vroot);
1037 +       }
1038 +
1039 +       if (register_blkdev(VROOT_MAJOR, "vroot"))
1040 +               return -EIO;
1041 +
1042 +       err = -ENOMEM;
1043 +       vroot_dev = kmalloc(max_vroot * sizeof(struct vroot_device), GFP_KERNEL);
1044 +       if (!vroot_dev)
1045 +               goto out_mem1;
1046 +       memset(vroot_dev, 0, max_vroot * sizeof(struct vroot_device));
1047 +
1048 +       disks = kmalloc(max_vroot * sizeof(struct gendisk *), GFP_KERNEL);
1049 +       if (!disks)
1050 +               goto out_mem2;
1051 +
1052 +       for (i = 0; i < max_vroot; i++) {
1053 +               disks[i] = alloc_disk(1);
1054 +               if (!disks[i])
1055 +                       goto out_mem3;
1056 +               disks[i]->queue = blk_alloc_queue(GFP_KERNEL);
1057 +               if (!disks[i]->queue)
1058 +                       goto out_mem3;
1059 +               blk_queue_make_request(disks[i]->queue, vroot_make_request);
1060 +       }
1061 +
1062 +       for (i = 0; i < max_vroot; i++) {
1063 +               struct vroot_device *vr = &vroot_dev[i];
1064 +               struct gendisk *disk = disks[i];
1065 +
1066 +               memset(vr, 0, sizeof(*vr));
1067 +               sema_init(&vr->vr_ctl_mutex, 1);
1068 +               vr->vr_number = i;
1069 +               disk->major = VROOT_MAJOR;
1070 +               disk->first_minor = i;
1071 +               disk->fops = &vr_fops;
1072 +               sprintf(disk->disk_name, "vroot%d", i);
1073 +               disk->private_data = vr;
1074 +       }
1075 +
1076 +       err = register_vroot_grb(&__vroot_get_real_bdev);
1077 +       if (err)
1078 +               goto out_mem3;
1079 +
1080 +       for (i = 0; i < max_vroot; i++)
1081 +               add_disk(disks[i]);
1082 +       printk(KERN_INFO "vroot: loaded (max %d devices)\n", max_vroot);
1083 +       return 0;
1084 +
1085 +out_mem3:
1086 +       while (i--)
1087 +               put_disk(disks[i]);
1088 +       kfree(disks);
1089 +out_mem2:
1090 +       kfree(vroot_dev);
1091 +out_mem1:
1092 +       unregister_blkdev(VROOT_MAJOR, "vroot");
1093 +       printk(KERN_ERR "vroot: ran out of memory\n");
1094 +       return err;
1095 +}
1096 +
1097 +void vroot_exit(void)
1098 +{
1099 +       int i;
1100 +
1101 +       if (unregister_vroot_grb(&__vroot_get_real_bdev))
1102 +               printk(KERN_WARNING "vroot: cannot unregister grb\n");
1103 +
1104 +       for (i = 0; i < max_vroot; i++) {
1105 +               del_gendisk(disks[i]);
1106 +               put_disk(disks[i]);
1107 +       }
1108 +       unregister_blkdev(VROOT_MAJOR, "vroot");
1109 +
1110 +       kfree(disks);
1111 +       kfree(vroot_dev);
1112 +}
1113 +
1114 +module_init(vroot_init);
1115 +module_exit(vroot_exit);
1116 +
1117 +#ifndef MODULE
1118 +
1119 +static int __init max_vroot_setup(char *str)
1120 +{
1121 +       max_vroot = simple_strtol(str, NULL, 0);
1122 +       return 1;
1123 +}
1124 +
1125 +__setup("max_vroot=", max_vroot_setup);
1126 +
1127 +#endif
1128 +
1129 diff -NurpP --minimal linux-4.4.111/drivers/infiniband/core/addr.c linux-4.4.111-vs2.3.9.5/drivers/infiniband/core/addr.c
1130 --- linux-4.4.111/drivers/infiniband/core/addr.c        2018-01-11 07:57:21.000000000 +0000
1131 +++ linux-4.4.111-vs2.3.9.5/drivers/infiniband/core/addr.c      2018-01-09 16:49:06.000000000 +0000
1132 @@ -283,7 +283,7 @@ static int addr6_resolve(struct sockaddr
1133
1134         if (ipv6_addr_any(&fl6.saddr)) {
1135                 ret = ipv6_dev_get_saddr(addr->net, ip6_dst_idev(dst)->dev,
1136 -                                        &fl6.daddr, 0, &fl6.saddr);
1137 +                                        &fl6.daddr, 0, &fl6.saddr, NULL);
1138                 if (ret)
1139                         goto put;
1140
1141 diff -NurpP --minimal linux-4.4.111/drivers/md/dm-ioctl.c linux-4.4.111-vs2.3.9.5/drivers/md/dm-ioctl.c
1142 --- linux-4.4.111/drivers/md/dm-ioctl.c 2018-01-11 07:57:23.000000000 +0000
1143 +++ linux-4.4.111-vs2.3.9.5/drivers/md/dm-ioctl.c       2018-01-09 16:36:23.000000000 +0000
1144 @@ -16,6 +16,7 @@
1145  #include <linux/dm-ioctl.h>
1146  #include <linux/hdreg.h>
1147  #include <linux/compat.h>
1148 +#include <linux/vs_context.h>
1149
1150  #include <asm/uaccess.h>
1151
1152 @@ -114,7 +115,8 @@ static struct hash_cell *__get_name_cell
1153         unsigned int h = hash_str(str);
1154
1155         list_for_each_entry (hc, _name_buckets + h, name_list)
1156 -               if (!strcmp(hc->name, str)) {
1157 +               if (vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT) &&
1158 +                       !strcmp(hc->name, str)) {
1159                         dm_get(hc->md);
1160                         return hc;
1161                 }
1162 @@ -128,7 +130,8 @@ static struct hash_cell *__get_uuid_cell
1163         unsigned int h = hash_str(str);
1164
1165         list_for_each_entry (hc, _uuid_buckets + h, uuid_list)
1166 -               if (!strcmp(hc->uuid, str)) {
1167 +               if (vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT) &&
1168 +                       !strcmp(hc->uuid, str)) {
1169                         dm_get(hc->md);
1170                         return hc;
1171                 }
1172 @@ -139,13 +142,15 @@ static struct hash_cell *__get_uuid_cell
1173  static struct hash_cell *__get_dev_cell(uint64_t dev)
1174  {
1175         struct mapped_device *md;
1176 -       struct hash_cell *hc;
1177 +       struct hash_cell *hc = NULL;
1178
1179         md = dm_get_md(huge_decode_dev(dev));
1180         if (!md)
1181                 return NULL;
1182
1183 -       hc = dm_get_mdptr(md);
1184 +       if (vx_check(dm_get_xid(md), VS_WATCH_P | VS_IDENT))
1185 +               hc = dm_get_mdptr(md);
1186 +
1187         if (!hc) {
1188                 dm_put(md);
1189                 return NULL;
1190 @@ -467,6 +472,9 @@ typedef int (*ioctl_fn)(struct dm_ioctl
1191
1192  static int remove_all(struct dm_ioctl *param, size_t param_size)
1193  {
1194 +       if (!vx_check(0, VS_ADMIN))
1195 +               return -EPERM;
1196 +
1197         dm_hash_remove_all(true, !!(param->flags & DM_DEFERRED_REMOVE), false);
1198         param->data_size = 0;
1199         return 0;
1200 @@ -514,6 +522,8 @@ static int list_devices(struct dm_ioctl
1201          */
1202         for (i = 0; i < NUM_BUCKETS; i++) {
1203                 list_for_each_entry (hc, _name_buckets + i, name_list) {
1204 +                       if (!vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT))
1205 +                               continue;
1206                         needed += sizeof(struct dm_name_list);
1207                         needed += strlen(hc->name) + 1;
1208                         needed += ALIGN_MASK;
1209 @@ -537,6 +547,8 @@ static int list_devices(struct dm_ioctl
1210          */
1211         for (i = 0; i < NUM_BUCKETS; i++) {
1212                 list_for_each_entry (hc, _name_buckets + i, name_list) {
1213 +                       if (!vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT))
1214 +                               continue;
1215                         if (old_nl)
1216                                 old_nl->next = (uint32_t) ((void *) nl -
1217                                                            (void *) old_nl);
1218 @@ -1801,8 +1813,8 @@ static int ctl_ioctl(uint command, struc
1219         size_t input_param_size;
1220         struct dm_ioctl param_kernel;
1221
1222 -       /* only root can play with this */
1223 -       if (!capable(CAP_SYS_ADMIN))
1224 +       /* only root and certain contexts can play with this */
1225 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_MAPPER))
1226                 return -EACCES;
1227
1228         if (_IOC_TYPE(command) != DM_IOCTL)
1229 diff -NurpP --minimal linux-4.4.111/drivers/md/dm.c linux-4.4.111-vs2.3.9.5/drivers/md/dm.c
1230 --- linux-4.4.111/drivers/md/dm.c       2018-01-11 07:57:23.000000000 +0000
1231 +++ linux-4.4.111-vs2.3.9.5/drivers/md/dm.c     2018-01-09 16:49:30.000000000 +0000
1232 @@ -25,6 +25,7 @@
1233  #include <linux/elevator.h> /* for rq_end_sector() */
1234  #include <linux/blk-mq.h>
1235  #include <linux/pr.h>
1236 +#include <linux/vs_base.h>
1237
1238  #include <trace/events/block.h>
1239
1240 @@ -144,6 +145,7 @@ struct mapped_device {
1241         struct mutex suspend_lock;
1242         atomic_t holders;
1243         atomic_t open_count;
1244 +       vxid_t xid;
1245
1246         /*
1247          * The current mapping.
1248 @@ -445,6 +447,7 @@ int dm_deleting_md(struct mapped_device
1249  static int dm_blk_open(struct block_device *bdev, fmode_t mode)
1250  {
1251         struct mapped_device *md;
1252 +       int ret = -ENXIO;
1253
1254         spin_lock(&_minor_lock);
1255
1256 @@ -453,17 +456,19 @@ static int dm_blk_open(struct block_devi
1257                 goto out;
1258
1259         if (test_bit(DMF_FREEING, &md->flags) ||
1260 -           dm_deleting_md(md)) {
1261 -               md = NULL;
1262 +           dm_deleting_md(md))
1263 +               goto out;
1264 +
1265 +       ret = -EACCES;
1266 +       if (!vx_check(md->xid, VS_IDENT|VS_HOSTID))
1267                 goto out;
1268 -       }
1269
1270         dm_get(md);
1271         atomic_inc(&md->open_count);
1272 +       ret = 0;
1273  out:
1274         spin_unlock(&_minor_lock);
1275 -
1276 -       return md ? 0 : -ENXIO;
1277 +       return ret;
1278  }
1279
1280  static void dm_blk_close(struct gendisk *disk, fmode_t mode)
1281 @@ -909,6 +914,14 @@ int dm_set_geometry(struct mapped_device
1282         return 0;
1283  }
1284
1285 +/*
1286 + * Get the xid associated with a dm device
1287 + */
1288 +vxid_t dm_get_xid(struct mapped_device *md)
1289 +{
1290 +       return md->xid;
1291 +}
1292 +
1293  /*-----------------------------------------------------------------
1294   * CRUD START:
1295   *   A more elegant soln is in the works that uses the queue
1296 @@ -2380,6 +2393,7 @@ static struct mapped_device *alloc_dev(i
1297         INIT_LIST_HEAD(&md->table_devices);
1298         spin_lock_init(&md->uevent_lock);
1299
1300 +       md->xid = vx_current_xid();
1301         md->queue = blk_alloc_queue(GFP_KERNEL);
1302         if (!md->queue)
1303                 goto bad;
1304 diff -NurpP --minimal linux-4.4.111/drivers/md/dm.h linux-4.4.111-vs2.3.9.5/drivers/md/dm.h
1305 --- linux-4.4.111/drivers/md/dm.h       2016-07-05 04:12:06.000000000 +0000
1306 +++ linux-4.4.111-vs2.3.9.5/drivers/md/dm.h     2018-01-09 16:36:24.000000000 +0000
1307 @@ -52,6 +52,8 @@ struct dm_dev_internal {
1308  struct dm_table;
1309  struct dm_md_mempools;
1310
1311 +vxid_t dm_get_xid(struct mapped_device *md);
1312 +
1313  /*-----------------------------------------------------------------
1314   * Internal table functions.
1315   *---------------------------------------------------------------*/
1316 diff -NurpP --minimal linux-4.4.111/drivers/net/tun.c linux-4.4.111-vs2.3.9.5/drivers/net/tun.c
1317 --- linux-4.4.111/drivers/net/tun.c     2018-01-11 07:57:30.000000000 +0000
1318 +++ linux-4.4.111-vs2.3.9.5/drivers/net/tun.c   2018-01-09 16:36:24.000000000 +0000
1319 @@ -65,6 +65,7 @@
1320  #include <linux/nsproxy.h>
1321  #include <linux/virtio_net.h>
1322  #include <linux/rcupdate.h>
1323 +#include <linux/vs_network.h>
1324  #include <net/net_namespace.h>
1325  #include <net/netns/generic.h>
1326  #include <net/rtnetlink.h>
1327 @@ -181,6 +182,7 @@ struct tun_struct {
1328         unsigned int            flags;
1329         kuid_t                  owner;
1330         kgid_t                  group;
1331 +       vnid_t                  nid;
1332
1333         struct net_device       *dev;
1334         netdev_features_t       set_features;
1335 @@ -475,6 +477,7 @@ static inline bool tun_not_capable(struc
1336         return ((uid_valid(tun->owner) && !uid_eq(cred->euid, tun->owner)) ||
1337                   (gid_valid(tun->group) && !in_egroup_p(tun->group))) &&
1338                 !ns_capable(net->user_ns, CAP_NET_ADMIN);
1339 +               /* !cap_raised(current_cap(), CAP_NET_ADMIN) */
1340  }
1341
1342  static void tun_set_real_num_queues(struct tun_struct *tun)
1343 @@ -1463,6 +1466,7 @@ static void tun_setup(struct net_device
1344
1345         tun->owner = INVALID_UID;
1346         tun->group = INVALID_GID;
1347 +       tun->nid = nx_current_nid();
1348
1349         dev->ethtool_ops = &tun_ethtool_ops;
1350         dev->destructor = tun_free_netdev;
1351 @@ -1657,7 +1661,7 @@ static int tun_set_iff(struct net *net,
1352                 int queues = ifr->ifr_flags & IFF_MULTI_QUEUE ?
1353                              MAX_TAP_QUEUES : 1;
1354
1355 -               if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
1356 +               if (!nx_ns_capable(net->user_ns, CAP_NET_ADMIN, NXC_TUN_CREATE))
1357                         return -EPERM;
1358                 err = security_tun_dev_create();
1359                 if (err < 0)
1360 @@ -2010,6 +2014,16 @@ static long __tun_chr_ioctl(struct file
1361                           from_kgid(&init_user_ns, tun->group));
1362                 break;
1363
1364 +       case TUNSETNID:
1365 +               if (!capable(CAP_CONTEXT))
1366 +                       return -EPERM;
1367 +
1368 +               /* Set nid owner of the device */
1369 +               tun->nid = (vnid_t) arg;
1370 +
1371 +               tun_debug(KERN_INFO, tun, "nid owner set to %u\n", tun->nid);
1372 +               break;
1373 +
1374         case TUNSETLINK:
1375                 /* Only allow setting the type when the interface is down */
1376                 if (tun->dev->flags & IFF_UP) {
1377 diff -NurpP --minimal linux-4.4.111/drivers/scsi/cxgbi/libcxgbi.c linux-4.4.111-vs2.3.9.5/drivers/scsi/cxgbi/libcxgbi.c
1378 --- linux-4.4.111/drivers/scsi/cxgbi/libcxgbi.c 2015-10-29 09:21:24.000000000 +0000
1379 +++ linux-4.4.111-vs2.3.9.5/drivers/scsi/cxgbi/libcxgbi.c       2018-01-09 16:36:24.000000000 +0000
1380 @@ -768,7 +768,8 @@ static struct cxgbi_sock *cxgbi_check_ro
1381                 struct inet6_dev *idev = ip6_dst_idev((struct dst_entry *)rt);
1382
1383                 err = ipv6_dev_get_saddr(&init_net, idev ? idev->dev : NULL,
1384 -                                        &daddr6->sin6_addr, 0, &pref_saddr);
1385 +                                        &daddr6->sin6_addr, 0, &pref_saddr,
1386 +                                        NULL);
1387                 if (err) {
1388                         pr_info("failed to get source address to reach %pI6\n",
1389                                 &daddr6->sin6_addr);
1390 diff -NurpP --minimal linux-4.4.111/drivers/tty/sysrq.c linux-4.4.111-vs2.3.9.5/drivers/tty/sysrq.c
1391 --- linux-4.4.111/drivers/tty/sysrq.c   2018-01-11 07:57:38.000000000 +0000
1392 +++ linux-4.4.111-vs2.3.9.5/drivers/tty/sysrq.c 2018-01-09 16:36:24.000000000 +0000
1393 @@ -47,6 +47,7 @@
1394  #include <linux/syscalls.h>
1395  #include <linux/of.h>
1396  #include <linux/rcupdate.h>
1397 +#include <linux/vserver/debug.h>
1398
1399  #include <asm/ptrace.h>
1400  #include <asm/irq_regs.h>
1401 @@ -421,6 +422,21 @@ static struct sysrq_key_op sysrq_unrt_op
1402         .enable_mask    = SYSRQ_ENABLE_RTNICE,
1403  };
1404
1405 +
1406 +#ifdef CONFIG_VSERVER_DEBUG
1407 +static void sysrq_handle_vxinfo(int key)
1408 +{
1409 +       dump_vx_info_inactive((key == 'x') ? 0 : 1);
1410 +}
1411 +
1412 +static struct sysrq_key_op sysrq_showvxinfo_op = {
1413 +       .handler        = sysrq_handle_vxinfo,
1414 +       .help_msg       = "conteXt",
1415 +       .action_msg     = "Show Context Info",
1416 +       .enable_mask    = SYSRQ_ENABLE_DUMP,
1417 +};
1418 +#endif
1419 +
1420  /* Key Operations table and lock */
1421  static DEFINE_SPINLOCK(sysrq_key_table_lock);
1422
1423 @@ -477,7 +493,11 @@ static struct sysrq_key_op *sysrq_key_ta
1424         /* x: May be registered on mips for TLB dump */
1425         /* x: May be registered on ppc/powerpc for xmon */
1426         /* x: May be registered on sparc64 for global PMU dump */
1427 +#ifdef CONFIG_VSERVER_DEBUG
1428 +       &sysrq_showvxinfo_op,           /* x */
1429 +#else
1430         NULL,                           /* x */
1431 +#endif
1432         /* y: May be registered on sparc64 for global register dump */
1433         NULL,                           /* y */
1434         &sysrq_ftrace_dump_op,          /* z */
1435 @@ -492,6 +512,8 @@ static int sysrq_key_table_key2index(int
1436                 retval = key - '0';
1437         else if ((key >= 'a') && (key <= 'z'))
1438                 retval = key + 10 - 'a';
1439 +       else if ((key >= 'A') && (key <= 'Z'))
1440 +               retval = key + 10 - 'A';
1441         else
1442                 retval = -1;
1443         return retval;
1444 diff -NurpP --minimal linux-4.4.111/drivers/tty/tty_io.c linux-4.4.111-vs2.3.9.5/drivers/tty/tty_io.c
1445 --- linux-4.4.111/drivers/tty/tty_io.c  2018-01-11 07:57:38.000000000 +0000
1446 +++ linux-4.4.111-vs2.3.9.5/drivers/tty/tty_io.c        2018-01-09 16:36:24.000000000 +0000
1447 @@ -104,6 +104,7 @@
1448
1449  #include <linux/kmod.h>
1450  #include <linux/nsproxy.h>
1451 +#include <linux/vs_pid.h>
1452
1453  #undef TTY_DEBUG_HANGUP
1454  #ifdef TTY_DEBUG_HANGUP
1455 @@ -2280,7 +2281,8 @@ static int tiocsti(struct tty_struct *tt
1456         char ch, mbz = 0;
1457         struct tty_ldisc *ld;
1458
1459 -       if ((current->signal->tty != tty) && !capable(CAP_SYS_ADMIN))
1460 +       if (((current->signal->tty != tty) &&
1461 +               !vx_capable(CAP_SYS_ADMIN, VXC_TIOCSTI)))
1462                 return -EPERM;
1463         if (get_user(ch, p))
1464                 return -EFAULT;
1465 @@ -2593,6 +2595,7 @@ static int tiocspgrp(struct tty_struct *
1466                 return -ENOTTY;
1467         if (get_user(pgrp_nr, p))
1468                 return -EFAULT;
1469 +       pgrp_nr = vx_rmap_pid(pgrp_nr);
1470         if (pgrp_nr < 0)
1471                 return -EINVAL;
1472         rcu_read_lock();
1473 diff -NurpP --minimal linux-4.4.111/fs/attr.c linux-4.4.111-vs2.3.9.5/fs/attr.c
1474 --- linux-4.4.111/fs/attr.c     2018-01-11 07:57:43.000000000 +0000
1475 +++ linux-4.4.111-vs2.3.9.5/fs/attr.c   2018-01-09 17:27:12.000000000 +0000
1476 @@ -15,6 +15,9 @@
1477  #include <linux/security.h>
1478  #include <linux/evm.h>
1479  #include <linux/ima.h>
1480 +#include <linux/proc_fs.h>
1481 +#include <linux/devpts_fs.h>
1482 +#include <linux/vs_tag.h>
1483
1484  /**
1485   * inode_change_ok - check if attribute changes to an inode are allowed
1486 @@ -77,6 +80,10 @@ int inode_change_ok(const struct inode *
1487                         return -EPERM;
1488         }
1489
1490 +       /* check for inode tag permission */
1491 +       if (dx_permission(inode, MAY_WRITE))
1492 +               return -EACCES;
1493 +
1494         return 0;
1495  }
1496  EXPORT_SYMBOL(inode_change_ok);
1497 @@ -147,6 +154,8 @@ void setattr_copy(struct inode *inode, c
1498                 inode->i_uid = attr->ia_uid;
1499         if (ia_valid & ATTR_GID)
1500                 inode->i_gid = attr->ia_gid;
1501 +       if ((ia_valid & ATTR_TAG) && IS_TAGGED(inode))
1502 +               inode->i_tag = attr->ia_tag;
1503         if (ia_valid & ATTR_ATIME)
1504                 inode->i_atime = timespec_trunc(attr->ia_atime,
1505                                                 inode->i_sb->s_time_gran);
1506 @@ -197,7 +206,8 @@ int notify_change(struct dentry * dentry
1507
1508         WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
1509
1510 -       if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_TIMES_SET)) {
1511 +       if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
1512 +               ATTR_TAG | ATTR_TIMES_SET)) {
1513                 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1514                         return -EPERM;
1515         }
1516 diff -NurpP --minimal linux-4.4.111/fs/block_dev.c linux-4.4.111-vs2.3.9.5/fs/block_dev.c
1517 --- linux-4.4.111/fs/block_dev.c        2018-01-11 07:57:43.000000000 +0000
1518 +++ linux-4.4.111-vs2.3.9.5/fs/block_dev.c      2018-01-09 17:16:29.000000000 +0000
1519 @@ -29,6 +29,7 @@
1520  #include <linux/log2.h>
1521  #include <linux/cleancache.h>
1522  #include <linux/dax.h>
1523 +#include <linux/vs_device.h>
1524  #include <asm/uaccess.h>
1525  #include "internal.h"
1526
1527 @@ -645,6 +646,7 @@ struct block_device *bdget(dev_t dev)
1528                 bdev->bd_invalidated = 0;
1529                 inode->i_mode = S_IFBLK;
1530                 inode->i_rdev = dev;
1531 +               inode->i_mdev = dev;
1532                 inode->i_bdev = bdev;
1533                 inode->i_data.a_ops = &def_blk_aops;
1534                 mapping_set_gfp_mask(&inode->i_data, GFP_USER);
1535 @@ -691,6 +693,11 @@ EXPORT_SYMBOL(bdput);
1536  static struct block_device *bd_acquire(struct inode *inode)
1537  {
1538         struct block_device *bdev;
1539 +       dev_t mdev;
1540 +
1541 +       if (!vs_map_blkdev(inode->i_rdev, &mdev, DATTR_OPEN))
1542 +               return NULL;
1543 +       inode->i_mdev = mdev;
1544
1545         spin_lock(&bdev_lock);
1546         bdev = inode->i_bdev;
1547 @@ -701,7 +708,7 @@ static struct block_device *bd_acquire(s
1548         }
1549         spin_unlock(&bdev_lock);
1550
1551 -       bdev = bdget(inode->i_rdev);
1552 +       bdev = bdget(mdev);
1553         if (bdev) {
1554                 spin_lock(&bdev_lock);
1555                 if (!inode->i_bdev) {
1556 diff -NurpP --minimal linux-4.4.111/fs/btrfs/ctree.h linux-4.4.111-vs2.3.9.5/fs/btrfs/ctree.h
1557 --- linux-4.4.111/fs/btrfs/ctree.h      2018-01-11 07:57:43.000000000 +0000
1558 +++ linux-4.4.111-vs2.3.9.5/fs/btrfs/ctree.h    2018-01-09 16:36:24.000000000 +0000
1559 @@ -731,11 +731,14 @@ struct btrfs_inode_item {
1560         /* modification sequence number for NFS */
1561         __le64 sequence;
1562
1563 +       __le16 tag;
1564         /*
1565          * a little future expansion, for more than this we can
1566          * just grow the inode item and version it
1567          */
1568 -       __le64 reserved[4];
1569 +       __le16 reserved16;
1570 +       __le32 reserved32;
1571 +       __le64 reserved[3];
1572         struct btrfs_timespec atime;
1573         struct btrfs_timespec ctime;
1574         struct btrfs_timespec mtime;
1575 @@ -2189,6 +2192,8 @@ struct btrfs_ioctl_defrag_range_args {
1576  #define BTRFS_DEFAULT_COMMIT_INTERVAL  (30)
1577  #define BTRFS_DEFAULT_MAX_INLINE       (8192)
1578
1579 +#define BTRFS_MOUNT_TAGGED             (1 << 24)
1580 +
1581  #define btrfs_clear_opt(o, opt)                ((o) &= ~BTRFS_MOUNT_##opt)
1582  #define btrfs_set_opt(o, opt)          ((o) |= BTRFS_MOUNT_##opt)
1583  #define btrfs_raw_test_opt(o, opt)     ((o) & BTRFS_MOUNT_##opt)
1584 @@ -2528,6 +2533,7 @@ BTRFS_SETGET_FUNCS(inode_block_group, st
1585  BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
1586  BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
1587  BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
1588 +BTRFS_SETGET_FUNCS(inode_tag, struct btrfs_inode_item, tag, 16);
1589  BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
1590  BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
1591  BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
1592 @@ -2575,6 +2581,10 @@ BTRFS_SETGET_FUNCS(extent_flags, struct
1593
1594  BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32);
1595
1596 +#define BTRFS_INODE_IXUNLINK           (1 << 24)
1597 +#define BTRFS_INODE_BARRIER            (1 << 25)
1598 +#define BTRFS_INODE_COW                        (1 << 26)
1599 +
1600
1601  BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
1602
1603 @@ -4022,6 +4032,7 @@ long btrfs_ioctl(struct file *file, unsi
1604  void btrfs_update_iflags(struct inode *inode);
1605  void btrfs_inherit_iflags(struct inode *inode, struct inode *dir);
1606  int btrfs_is_empty_uuid(u8 *uuid);
1607 +int btrfs_sync_flags(struct inode *inode, int, int);
1608  int btrfs_defrag_file(struct inode *inode, struct file *file,
1609                       struct btrfs_ioctl_defrag_range_args *range,
1610                       u64 newer_than, unsigned long max_pages);
1611 diff -NurpP --minimal linux-4.4.111/fs/btrfs/disk-io.c linux-4.4.111-vs2.3.9.5/fs/btrfs/disk-io.c
1612 --- linux-4.4.111/fs/btrfs/disk-io.c    2018-01-11 07:57:43.000000000 +0000
1613 +++ linux-4.4.111-vs2.3.9.5/fs/btrfs/disk-io.c  2018-01-09 16:36:24.000000000 +0000
1614 @@ -2736,6 +2736,9 @@ int open_ctree(struct super_block *sb,
1615                 goto fail_alloc;
1616         }
1617
1618 +       if (btrfs_test_opt(tree_root, TAGGED))
1619 +               sb->s_flags |= MS_TAGGED;
1620 +
1621         features = btrfs_super_incompat_flags(disk_super) &
1622                 ~BTRFS_FEATURE_INCOMPAT_SUPP;
1623         if (features) {
1624 diff -NurpP --minimal linux-4.4.111/fs/btrfs/inode.c linux-4.4.111-vs2.3.9.5/fs/btrfs/inode.c
1625 --- linux-4.4.111/fs/btrfs/inode.c      2018-01-11 07:57:43.000000000 +0000
1626 +++ linux-4.4.111-vs2.3.9.5/fs/btrfs/inode.c    2018-01-09 16:36:24.000000000 +0000
1627 @@ -43,6 +43,7 @@
1628  #include <linux/blkdev.h>
1629  #include <linux/posix_acl_xattr.h>
1630  #include <linux/uio.h>
1631 +#include <linux/vs_tag.h>
1632  #include "ctree.h"
1633  #include "disk-io.h"
1634  #include "transaction.h"
1635 @@ -3611,6 +3612,9 @@ static void btrfs_read_locked_inode(stru
1636         unsigned long ptr;
1637         int maybe_acls;
1638         u32 rdev;
1639 +       kuid_t kuid;
1640 +       kgid_t kgid;
1641 +       ktag_t ktag;
1642         int ret;
1643         bool filled = false;
1644         int first_xattr_slot;
1645 @@ -3638,8 +3642,14 @@ static void btrfs_read_locked_inode(stru
1646                                     struct btrfs_inode_item);
1647         inode->i_mode = btrfs_inode_mode(leaf, inode_item);
1648         set_nlink(inode, btrfs_inode_nlink(leaf, inode_item));
1649 -       i_uid_write(inode, btrfs_inode_uid(leaf, inode_item));
1650 -       i_gid_write(inode, btrfs_inode_gid(leaf, inode_item));
1651 +
1652 +       kuid = make_kuid(&init_user_ns, btrfs_inode_uid(leaf, inode_item));
1653 +       kgid = make_kgid(&init_user_ns, btrfs_inode_gid(leaf, inode_item));
1654 +       ktag = make_ktag(&init_user_ns, btrfs_inode_tag(leaf, inode_item));
1655 +
1656 +       inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
1657 +       inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
1658 +       inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, ktag);
1659         btrfs_i_size_write(inode, btrfs_inode_size(leaf, inode_item));
1660
1661         inode->i_atime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->atime);
1662 @@ -3795,11 +3805,18 @@ static void fill_inode_item(struct btrfs
1663                             struct inode *inode)
1664  {
1665         struct btrfs_map_token token;
1666 +       uid_t uid = from_kuid(&init_user_ns,
1667 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
1668 +       gid_t gid = from_kgid(&init_user_ns,
1669 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
1670
1671         btrfs_init_map_token(&token);
1672
1673 -       btrfs_set_token_inode_uid(leaf, item, i_uid_read(inode), &token);
1674 -       btrfs_set_token_inode_gid(leaf, item, i_gid_read(inode), &token);
1675 +       btrfs_set_token_inode_uid(leaf, item, uid, &token);
1676 +       btrfs_set_token_inode_gid(leaf, item, gid, &token);
1677 +#ifdef CONFIG_TAGGING_INTERN
1678 +       btrfs_set_token_inode_tag(leaf, item, i_tag_read(inode), &token);
1679 +#endif
1680         btrfs_set_token_inode_size(leaf, item, BTRFS_I(inode)->disk_i_size,
1681                                    &token);
1682         btrfs_set_token_inode_mode(leaf, item, inode->i_mode, &token);
1683 @@ -10062,6 +10079,7 @@ static const struct inode_operations btr
1684         .listxattr      = btrfs_listxattr,
1685         .removexattr    = btrfs_removexattr,
1686         .permission     = btrfs_permission,
1687 +       .sync_flags     = btrfs_sync_flags,
1688         .get_acl        = btrfs_get_acl,
1689         .set_acl        = btrfs_set_acl,
1690         .update_time    = btrfs_update_time,
1691 @@ -10070,6 +10088,7 @@ static const struct inode_operations btr
1692  static const struct inode_operations btrfs_dir_ro_inode_operations = {
1693         .lookup         = btrfs_lookup,
1694         .permission     = btrfs_permission,
1695 +       .sync_flags     = btrfs_sync_flags,
1696         .get_acl        = btrfs_get_acl,
1697         .set_acl        = btrfs_set_acl,
1698         .update_time    = btrfs_update_time,
1699 @@ -10140,6 +10159,7 @@ static const struct inode_operations btr
1700         .removexattr    = btrfs_removexattr,
1701         .permission     = btrfs_permission,
1702         .fiemap         = btrfs_fiemap,
1703 +       .sync_flags     = btrfs_sync_flags,
1704         .get_acl        = btrfs_get_acl,
1705         .set_acl        = btrfs_set_acl,
1706         .update_time    = btrfs_update_time,
1707 diff -NurpP --minimal linux-4.4.111/fs/btrfs/ioctl.c linux-4.4.111-vs2.3.9.5/fs/btrfs/ioctl.c
1708 --- linux-4.4.111/fs/btrfs/ioctl.c      2018-01-11 07:57:43.000000000 +0000
1709 +++ linux-4.4.111-vs2.3.9.5/fs/btrfs/ioctl.c    2018-01-09 16:36:24.000000000 +0000
1710 @@ -108,10 +108,13 @@ static unsigned int btrfs_flags_to_ioctl
1711  {
1712         unsigned int iflags = 0;
1713
1714 -       if (flags & BTRFS_INODE_SYNC)
1715 -               iflags |= FS_SYNC_FL;
1716         if (flags & BTRFS_INODE_IMMUTABLE)
1717                 iflags |= FS_IMMUTABLE_FL;
1718 +       if (flags & BTRFS_INODE_IXUNLINK)
1719 +               iflags |= FS_IXUNLINK_FL;
1720 +
1721 +       if (flags & BTRFS_INODE_SYNC)
1722 +               iflags |= FS_SYNC_FL;
1723         if (flags & BTRFS_INODE_APPEND)
1724                 iflags |= FS_APPEND_FL;
1725         if (flags & BTRFS_INODE_NODUMP)
1726 @@ -128,34 +131,84 @@ static unsigned int btrfs_flags_to_ioctl
1727         else if (flags & BTRFS_INODE_NOCOMPRESS)
1728                 iflags |= FS_NOCOMP_FL;
1729
1730 +       if (flags & BTRFS_INODE_BARRIER)
1731 +               iflags |= FS_BARRIER_FL;
1732 +       if (flags & BTRFS_INODE_COW)
1733 +               iflags |= FS_COW_FL;
1734         return iflags;
1735  }
1736
1737  /*
1738 - * Update inode->i_flags based on the btrfs internal flags.
1739 + * Update inode->i_(v)flags based on the btrfs internal flags.
1740   */
1741  void btrfs_update_iflags(struct inode *inode)
1742  {
1743         struct btrfs_inode *ip = BTRFS_I(inode);
1744         unsigned int new_fl = 0;
1745
1746 -       if (ip->flags & BTRFS_INODE_SYNC)
1747 -               new_fl |= S_SYNC;
1748         if (ip->flags & BTRFS_INODE_IMMUTABLE)
1749                 new_fl |= S_IMMUTABLE;
1750 +       if (ip->flags & BTRFS_INODE_IXUNLINK)
1751 +               new_fl |= S_IXUNLINK;
1752 +
1753 +       if (ip->flags & BTRFS_INODE_SYNC)
1754 +               new_fl |= S_SYNC;
1755         if (ip->flags & BTRFS_INODE_APPEND)
1756                 new_fl |= S_APPEND;
1757         if (ip->flags & BTRFS_INODE_NOATIME)
1758                 new_fl |= S_NOATIME;
1759         if (ip->flags & BTRFS_INODE_DIRSYNC)
1760                 new_fl |= S_DIRSYNC;
1761 -
1762         set_mask_bits(&inode->i_flags,
1763 -                     S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME | S_DIRSYNC,
1764 +                     S_SYNC | S_APPEND | S_IMMUTABLE | S_IXUNLINK | S_NOATIME | S_DIRSYNC,
1765                       new_fl);
1766 +
1767 +       new_fl = 0;
1768 +       if (ip->flags & BTRFS_INODE_BARRIER)
1769 +               new_fl |= V_BARRIER;
1770 +       if (ip->flags & BTRFS_INODE_COW)
1771 +               new_fl |= V_COW;
1772 +
1773 +       set_mask_bits(&inode->i_vflags,
1774 +               V_BARRIER | V_COW, new_fl);
1775  }
1776
1777  /*
1778 + * Update btrfs internal flags from inode->i_(v)flags.
1779 + */
1780 +void btrfs_update_flags(struct inode *inode)
1781 +{
1782 +       struct btrfs_inode *ip = BTRFS_I(inode);
1783 +
1784 +       unsigned int flags = inode->i_flags;
1785 +       unsigned int vflags = inode->i_vflags;
1786 +
1787 +       ip->flags &= ~(BTRFS_INODE_SYNC | BTRFS_INODE_APPEND |
1788 +                       BTRFS_INODE_IMMUTABLE | BTRFS_INODE_IXUNLINK |
1789 +                       BTRFS_INODE_NOATIME | BTRFS_INODE_DIRSYNC |
1790 +                       BTRFS_INODE_BARRIER | BTRFS_INODE_COW);
1791 +
1792 +       if (flags & S_IMMUTABLE)
1793 +               ip->flags |= BTRFS_INODE_IMMUTABLE;
1794 +       if (flags & S_IXUNLINK)
1795 +               ip->flags |= BTRFS_INODE_IXUNLINK;
1796 +
1797 +       if (flags & S_SYNC)
1798 +               ip->flags |= BTRFS_INODE_SYNC;
1799 +       if (flags & S_APPEND)
1800 +               ip->flags |= BTRFS_INODE_APPEND;
1801 +       if (flags & S_NOATIME)
1802 +               ip->flags |= BTRFS_INODE_NOATIME;
1803 +       if (flags & S_DIRSYNC)
1804 +               ip->flags |= BTRFS_INODE_DIRSYNC;
1805 +
1806 +       if (vflags & V_BARRIER)
1807 +               ip->flags |= BTRFS_INODE_BARRIER;
1808 +       if (vflags & V_COW)
1809 +               ip->flags |= BTRFS_INODE_COW;
1810 + }
1811 +
1812 +/*
1813   * Inherit flags from the parent inode.
1814   *
1815   * Currently only the compression flags and the cow flags are inherited.
1816 @@ -168,6 +221,7 @@ void btrfs_inherit_iflags(struct inode *
1817                 return;
1818
1819         flags = BTRFS_I(dir)->flags;
1820 +       flags &= ~BTRFS_INODE_BARRIER;
1821
1822         if (flags & BTRFS_INODE_NOCOMPRESS) {
1823                 BTRFS_I(inode)->flags &= ~BTRFS_INODE_COMPRESS;
1824 @@ -186,6 +240,30 @@ void btrfs_inherit_iflags(struct inode *
1825         btrfs_update_iflags(inode);
1826  }
1827
1828 +int btrfs_sync_flags(struct inode *inode, int flags, int vflags)
1829 +{
1830 +       struct btrfs_inode *ip = BTRFS_I(inode);
1831 +       struct btrfs_root *root = ip->root;
1832 +       struct btrfs_trans_handle *trans;
1833 +       int ret;
1834 +
1835 +       trans = btrfs_join_transaction(root);
1836 +       BUG_ON(!trans);
1837 +
1838 +       inode->i_flags = flags;
1839 +       inode->i_vflags = vflags;
1840 +       btrfs_update_flags(inode);
1841 +
1842 +       ret = btrfs_update_inode(trans, root, inode);
1843 +       BUG_ON(ret);
1844 +
1845 +       btrfs_update_iflags(inode);
1846 +       inode->i_ctime = CURRENT_TIME;
1847 +       btrfs_end_transaction(trans, root);
1848 +
1849 +       return 0;
1850 +}
1851 +
1852  static int btrfs_ioctl_getflags(struct file *file, void __user *arg)
1853  {
1854         struct btrfs_inode *ip = BTRFS_I(file_inode(file));
1855 @@ -248,21 +326,27 @@ static int btrfs_ioctl_setflags(struct f
1856
1857         flags = btrfs_mask_flags(inode->i_mode, flags);
1858         oldflags = btrfs_flags_to_ioctl(ip->flags);
1859 -       if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
1860 +       if ((flags ^ oldflags) & (FS_APPEND_FL |
1861 +               FS_IMMUTABLE_FL | FS_IXUNLINK_FL)) {
1862                 if (!capable(CAP_LINUX_IMMUTABLE)) {
1863                         ret = -EPERM;
1864                         goto out_unlock;
1865                 }
1866         }
1867
1868 -       if (flags & FS_SYNC_FL)
1869 -               ip->flags |= BTRFS_INODE_SYNC;
1870 -       else
1871 -               ip->flags &= ~BTRFS_INODE_SYNC;
1872         if (flags & FS_IMMUTABLE_FL)
1873                 ip->flags |= BTRFS_INODE_IMMUTABLE;
1874         else
1875                 ip->flags &= ~BTRFS_INODE_IMMUTABLE;
1876 +       if (flags & FS_IXUNLINK_FL)
1877 +               ip->flags |= BTRFS_INODE_IXUNLINK;
1878 +       else
1879 +               ip->flags &= ~BTRFS_INODE_IXUNLINK;
1880 +
1881 +       if (flags & FS_SYNC_FL)
1882 +               ip->flags |= BTRFS_INODE_SYNC;
1883 +       else
1884 +               ip->flags &= ~BTRFS_INODE_SYNC;
1885         if (flags & FS_APPEND_FL)
1886                 ip->flags |= BTRFS_INODE_APPEND;
1887         else
1888 diff -NurpP --minimal linux-4.4.111/fs/btrfs/super.c linux-4.4.111-vs2.3.9.5/fs/btrfs/super.c
1889 --- linux-4.4.111/fs/btrfs/super.c      2018-01-11 07:57:43.000000000 +0000
1890 +++ linux-4.4.111-vs2.3.9.5/fs/btrfs/super.c    2018-01-09 17:25:27.000000000 +0000
1891 @@ -306,7 +306,7 @@ enum {
1892  #ifdef CONFIG_BTRFS_DEBUG
1893         Opt_fragment_data, Opt_fragment_metadata, Opt_fragment_all,
1894  #endif
1895 -       Opt_err,
1896 +       Opt_tag, Opt_notag, Opt_tagid, Opt_err,
1897  };
1898
1899  static match_table_t tokens = {
1900 @@ -363,6 +363,9 @@ static match_table_t tokens = {
1901         {Opt_fragment_metadata, "fragment=metadata"},
1902         {Opt_fragment_all, "fragment=all"},
1903  #endif
1904 +       {Opt_tag, "tag"},
1905 +       {Opt_notag, "notag"},
1906 +       {Opt_tagid, "tagid=%u"},
1907         {Opt_err, NULL},
1908  };
1909
1910 @@ -745,6 +748,22 @@ int btrfs_parse_options(struct btrfs_roo
1911                         btrfs_set_opt(info->mount_opt, FRAGMENT_DATA);
1912                         break;
1913  #endif
1914 +#ifndef CONFIG_TAGGING_NONE
1915 +               case Opt_tag:
1916 +                       printk(KERN_INFO "btrfs: use tagging\n");
1917 +                       btrfs_set_opt(info->mount_opt, TAGGED);
1918 +                       break;
1919 +               case Opt_notag:
1920 +                       printk(KERN_INFO "btrfs: disabled tagging\n");
1921 +                       btrfs_clear_opt(info->mount_opt, TAGGED);
1922 +                       break;
1923 +#endif
1924 +#ifdef CONFIG_PROPAGATE
1925 +               case Opt_tagid:
1926 +                       /* use args[0] */
1927 +                       btrfs_set_opt(info->mount_opt, TAGGED);
1928 +                       break;
1929 +#endif
1930                 case Opt_err:
1931                         btrfs_info(root->fs_info, "unrecognized mount option '%s'", p);
1932                         ret = -EINVAL;
1933 @@ -1647,6 +1666,12 @@ static int btrfs_remount(struct super_bl
1934         btrfs_resize_thread_pool(fs_info,
1935                 fs_info->thread_pool_size, old_thread_pool_size);
1936
1937 +       if (btrfs_test_opt(root, TAGGED) && !(sb->s_flags & MS_TAGGED)) {
1938 +               printk("btrfs: %s: tagging not permitted on remount.\n",
1939 +                       sb->s_id);
1940 +               return -EINVAL;
1941 +       }
1942 +
1943         if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
1944                 goto out;
1945
1946 diff -NurpP --minimal linux-4.4.111/fs/char_dev.c linux-4.4.111-vs2.3.9.5/fs/char_dev.c
1947 --- linux-4.4.111/fs/char_dev.c 2016-07-05 04:12:30.000000000 +0000
1948 +++ linux-4.4.111-vs2.3.9.5/fs/char_dev.c       2018-01-09 16:36:24.000000000 +0000
1949 @@ -21,6 +21,8 @@
1950  #include <linux/mutex.h>
1951  #include <linux/backing-dev.h>
1952  #include <linux/tty.h>
1953 +#include <linux/vs_context.h>
1954 +#include <linux/vs_device.h>
1955
1956  #include "internal.h"
1957
1958 @@ -350,14 +352,21 @@ static int chrdev_open(struct inode *ino
1959         struct cdev *p;
1960         struct cdev *new = NULL;
1961         int ret = 0;
1962 +       dev_t mdev;
1963 +
1964 +       if (!vs_map_chrdev(inode->i_rdev, &mdev, DATTR_OPEN))
1965 +               return -EPERM;
1966 +       inode->i_mdev = mdev;
1967
1968         spin_lock(&cdev_lock);
1969         p = inode->i_cdev;
1970         if (!p) {
1971                 struct kobject *kobj;
1972                 int idx;
1973 +
1974                 spin_unlock(&cdev_lock);
1975 -               kobj = kobj_lookup(cdev_map, inode->i_rdev, &idx);
1976 +
1977 +               kobj = kobj_lookup(cdev_map, mdev, &idx);
1978                 if (!kobj)
1979                         return -ENXIO;
1980                 new = container_of(kobj, struct cdev, kobj);
1981 diff -NurpP --minimal linux-4.4.111/fs/dcache.c linux-4.4.111-vs2.3.9.5/fs/dcache.c
1982 --- linux-4.4.111/fs/dcache.c   2018-01-11 07:57:44.000000000 +0000
1983 +++ linux-4.4.111-vs2.3.9.5/fs/dcache.c 2018-01-09 16:36:24.000000000 +0000
1984 @@ -39,6 +39,7 @@
1985  #include <linux/ratelimit.h>
1986  #include <linux/list_lru.h>
1987  #include <linux/kasan.h>
1988 +#include <linux/vs_limit.h>
1989
1990  #include "internal.h"
1991  #include "mount.h"
1992 @@ -677,6 +678,7 @@ static inline bool fast_dput(struct dent
1993                 spin_lock(&dentry->d_lock);
1994                 if (dentry->d_lockref.count > 1) {
1995                         dentry->d_lockref.count--;
1996 +                       vx_dentry_dec(dentry);
1997                         spin_unlock(&dentry->d_lock);
1998                         return 1;
1999                 }
2000 @@ -806,6 +808,7 @@ repeat:
2001         dentry_lru_add(dentry);
2002
2003         dentry->d_lockref.count--;
2004 +       vx_dentry_dec(dentry);
2005         spin_unlock(&dentry->d_lock);
2006         return;
2007
2008 @@ -823,6 +826,7 @@ EXPORT_SYMBOL(dput);
2009  static inline void __dget_dlock(struct dentry *dentry)
2010  {
2011         dentry->d_lockref.count++;
2012 +       vx_dentry_inc(dentry);
2013  }
2014
2015  static inline void __dget(struct dentry *dentry)
2016 @@ -835,6 +839,8 @@ struct dentry *dget_parent(struct dentry
2017         int gotref;
2018         struct dentry *ret;
2019
2020 +       vx_dentry_dec(dentry);
2021 +
2022         /*
2023          * Do optimistic parent lookup without any
2024          * locking.
2025 @@ -865,6 +871,7 @@ repeat:
2026         rcu_read_unlock();
2027         BUG_ON(!ret->d_lockref.count);
2028         ret->d_lockref.count++;
2029 +       vx_dentry_inc(ret);
2030         spin_unlock(&ret->d_lock);
2031         return ret;
2032  }
2033 @@ -1019,6 +1026,7 @@ static void shrink_dentry_list(struct li
2034                         parent = lock_parent(dentry);
2035                         if (dentry->d_lockref.count != 1) {
2036                                 dentry->d_lockref.count--;
2037 +                               vx_dentry_dec(dentry);
2038                                 spin_unlock(&dentry->d_lock);
2039                                 if (parent)
2040                                         spin_unlock(&parent->d_lock);
2041 @@ -1581,6 +1589,9 @@ struct dentry *__d_alloc(struct super_bl
2042         struct dentry *dentry;
2043         char *dname;
2044
2045 +       if (!vx_dentry_avail(1))
2046 +               return NULL;
2047 +
2048         dentry = kmem_cache_alloc(dentry_cache, GFP_KERNEL);
2049         if (!dentry)
2050                 return NULL;
2051 @@ -1619,6 +1630,7 @@ struct dentry *__d_alloc(struct super_bl
2052
2053         dentry->d_lockref.count = 1;
2054         dentry->d_flags = 0;
2055 +       vx_dentry_inc(dentry);
2056         spin_lock_init(&dentry->d_lock);
2057         seqcount_init(&dentry->d_seq);
2058         dentry->d_inode = NULL;
2059 @@ -2355,6 +2367,7 @@ struct dentry *__d_lookup(const struct d
2060                 }
2061
2062                 dentry->d_lockref.count++;
2063 +               vx_dentry_inc(dentry);
2064                 found = dentry;
2065                 spin_unlock(&dentry->d_lock);
2066                 break;
2067 @@ -3371,6 +3384,7 @@ static enum d_walk_ret d_genocide_kill(v
2068                 if (!(dentry->d_flags & DCACHE_GENOCIDE)) {
2069                         dentry->d_flags |= DCACHE_GENOCIDE;
2070                         dentry->d_lockref.count--;
2071 +                       vx_dentry_dec(dentry);
2072                 }
2073         }
2074         return D_WALK_CONTINUE;
2075 diff -NurpP --minimal linux-4.4.111/fs/devpts/inode.c linux-4.4.111-vs2.3.9.5/fs/devpts/inode.c
2076 --- linux-4.4.111/fs/devpts/inode.c     2018-01-11 07:57:44.000000000 +0000
2077 +++ linux-4.4.111-vs2.3.9.5/fs/devpts/inode.c   2018-01-09 16:36:24.000000000 +0000
2078 @@ -27,6 +27,7 @@
2079  #include <linux/parser.h>
2080  #include <linux/fsnotify.h>
2081  #include <linux/seq_file.h>
2082 +#include <linux/vs_base.h>
2083
2084  #define DEVPTS_DEFAULT_MODE 0600
2085  /*
2086 @@ -38,6 +39,21 @@
2087  #define DEVPTS_DEFAULT_PTMX_MODE 0000
2088  #define PTMX_MINOR     2
2089
2090 +static int devpts_permission(struct inode *inode, int mask)
2091 +{
2092 +       int ret = -EACCES;
2093 +
2094 +       /* devpts is xid tagged */
2095 +       if (vx_check((vxid_t)i_tag_read(inode), VS_WATCH_P | VS_IDENT))
2096 +               ret = generic_permission(inode, mask);
2097 +       return ret;
2098 +}
2099 +
2100 +static struct inode_operations devpts_file_inode_operations = {
2101 +       .permission     = devpts_permission,
2102 +};
2103 +
2104 +
2105  /*
2106   * sysctl support for setting limits on the number of Unix98 ptys allocated.
2107   * Otherwise one can eat up all kernel memory by opening /dev/ptmx repeatedly.
2108 @@ -353,6 +369,34 @@ static int devpts_show_options(struct se
2109         return 0;
2110  }
2111
2112 +static int devpts_filter(struct dentry *de)
2113 +{
2114 +       vxid_t xid = 0;
2115 +
2116 +       /* devpts is xid tagged */
2117 +       if (de && de->d_inode)
2118 +               xid = (vxid_t)i_tag_read(de->d_inode);
2119 +#ifdef CONFIG_VSERVER_WARN_DEVPTS
2120 +       else
2121 +               vxwprintk_task(1, "devpts " VS_Q("%.*s") " without inode.",
2122 +                       de->d_name.len, de->d_name.name);
2123 +#endif
2124 +       return vx_check(xid, VS_WATCH_P | VS_IDENT);
2125 +}
2126 +
2127 +static int devpts_readdir(struct file * filp, struct dir_context *ctx)
2128 +{
2129 +       return dcache_readdir_filter(filp, ctx, devpts_filter);
2130 +}
2131 +
2132 +static struct file_operations devpts_dir_operations = {
2133 +       .open           = dcache_dir_open,
2134 +       .release        = dcache_dir_close,
2135 +       .llseek         = dcache_dir_lseek,
2136 +       .read           = generic_read_dir,
2137 +       .iterate        = devpts_readdir,
2138 +};
2139 +
2140  static const struct super_operations devpts_sops = {
2141         .statfs         = simple_statfs,
2142         .remount_fs     = devpts_remount,
2143 @@ -397,8 +441,10 @@ devpts_fill_super(struct super_block *s,
2144         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
2145         inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
2146         inode->i_op = &simple_dir_inode_operations;
2147 -       inode->i_fop = &simple_dir_operations;
2148 +       inode->i_fop = &devpts_dir_operations;
2149         set_nlink(inode, 2);
2150 +       /* devpts is xid tagged */
2151 +       i_tag_write(inode, (vtag_t)vx_current_xid());
2152
2153         s->s_root = d_make_root(inode);
2154         if (s->s_root)
2155 @@ -630,6 +676,9 @@ struct inode *devpts_pty_new(struct pts_
2156         inode->i_gid = opts->setgid ? opts->gid : current_fsgid();
2157         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
2158         init_special_inode(inode, S_IFCHR|opts->mode, device);
2159 +       /* devpts is xid tagged */
2160 +       i_tag_write(inode, (vtag_t)vx_current_xid());
2161 +       inode->i_op = &devpts_file_inode_operations;
2162         inode->i_private = priv;
2163
2164         sprintf(s, "%d", index);
2165 diff -NurpP --minimal linux-4.4.111/fs/ext2/balloc.c linux-4.4.111-vs2.3.9.5/fs/ext2/balloc.c
2166 --- linux-4.4.111/fs/ext2/balloc.c      2015-04-12 22:12:50.000000000 +0000
2167 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/balloc.c    2018-01-09 16:36:24.000000000 +0000
2168 @@ -693,7 +693,6 @@ ext2_try_to_allocate(struct super_block
2169                         start = 0;
2170                 end = EXT2_BLOCKS_PER_GROUP(sb);
2171         }
2172 -
2173         BUG_ON(start > EXT2_BLOCKS_PER_GROUP(sb));
2174
2175  repeat:
2176 diff -NurpP --minimal linux-4.4.111/fs/ext2/ext2.h linux-4.4.111-vs2.3.9.5/fs/ext2/ext2.h
2177 --- linux-4.4.111/fs/ext2/ext2.h        2016-07-05 04:15:07.000000000 +0000
2178 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/ext2.h      2018-01-09 16:36:24.000000000 +0000
2179 @@ -244,8 +244,12 @@ struct ext2_group_desc
2180  #define EXT2_NOTAIL_FL                 FS_NOTAIL_FL    /* file tail should not be merged */
2181  #define EXT2_DIRSYNC_FL                        FS_DIRSYNC_FL   /* dirsync behaviour (directories only) */
2182  #define EXT2_TOPDIR_FL                 FS_TOPDIR_FL    /* Top of directory hierarchies*/
2183 +#define EXT2_IXUNLINK_FL               FS_IXUNLINK_FL  /* Immutable invert on unlink */
2184  #define EXT2_RESERVED_FL               FS_RESERVED_FL  /* reserved for ext2 lib */
2185
2186 +#define EXT2_BARRIER_FL                        FS_BARRIER_FL   /* Barrier for chroot() */
2187 +#define EXT2_COW_FL                    FS_COW_FL       /* Copy on Write marker */
2188 +
2189  #define EXT2_FL_USER_VISIBLE           FS_FL_USER_VISIBLE      /* User visible flags */
2190  #define EXT2_FL_USER_MODIFIABLE                FS_FL_USER_MODIFIABLE   /* User modifiable flags */
2191
2192 @@ -329,7 +333,8 @@ struct ext2_inode {
2193                         __u16   i_pad1;
2194                         __le16  l_i_uid_high;   /* these 2 fields    */
2195                         __le16  l_i_gid_high;   /* were reserved2[0] */
2196 -                       __u32   l_i_reserved2;
2197 +                       __le16  l_i_tag;        /* Context Tag */
2198 +                       __u16   l_i_reserved2;
2199                 } linux2;
2200                 struct {
2201                         __u8    h_i_frag;       /* Fragment number */
2202 @@ -357,6 +362,7 @@ struct ext2_inode {
2203  #define i_gid_low      i_gid
2204  #define i_uid_high     osd2.linux2.l_i_uid_high
2205  #define i_gid_high     osd2.linux2.l_i_gid_high
2206 +#define i_raw_tag      osd2.linux2.l_i_tag
2207  #define i_reserved2    osd2.linux2.l_i_reserved2
2208
2209  /*
2210 @@ -389,6 +395,7 @@ struct ext2_inode {
2211  #else
2212  #define EXT2_MOUNT_DAX                 0
2213  #endif
2214 +#define EXT2_MOUNT_TAGGED              0x200000  /* Enable Context Tags */
2215
2216
2217  #define clear_opt(o, opt)              o &= ~EXT2_MOUNT_##opt
2218 @@ -776,6 +783,7 @@ extern void ext2_set_inode_flags(struct
2219  extern void ext2_get_inode_flags(struct ext2_inode_info *);
2220  extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2221                        u64 start, u64 len);
2222 +extern int ext2_sync_flags(struct inode *, int, int);
2223
2224  /* ioctl.c */
2225  extern long ext2_ioctl(struct file *, unsigned int, unsigned long);
2226 diff -NurpP --minimal linux-4.4.111/fs/ext2/file.c linux-4.4.111-vs2.3.9.5/fs/ext2/file.c
2227 --- linux-4.4.111/fs/ext2/file.c        2016-07-05 04:15:07.000000000 +0000
2228 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/file.c      2018-01-09 16:36:24.000000000 +0000
2229 @@ -202,4 +202,5 @@ const struct inode_operations ext2_file_
2230         .get_acl        = ext2_get_acl,
2231         .set_acl        = ext2_set_acl,
2232         .fiemap         = ext2_fiemap,
2233 +       .sync_flags     = ext2_sync_flags,
2234  };
2235 diff -NurpP --minimal linux-4.4.111/fs/ext2/ialloc.c linux-4.4.111-vs2.3.9.5/fs/ext2/ialloc.c
2236 --- linux-4.4.111/fs/ext2/ialloc.c      2016-07-05 04:12:30.000000000 +0000
2237 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/ialloc.c    2018-01-09 16:36:24.000000000 +0000
2238 @@ -17,6 +17,7 @@
2239  #include <linux/backing-dev.h>
2240  #include <linux/buffer_head.h>
2241  #include <linux/random.h>
2242 +#include <linux/vs_tag.h>
2243  #include "ext2.h"
2244  #include "xattr.h"
2245  #include "acl.h"
2246 @@ -546,6 +547,7 @@ got:
2247                 inode->i_mode = mode;
2248                 inode->i_uid = current_fsuid();
2249                 inode->i_gid = dir->i_gid;
2250 +               i_tag_write(inode, dx_current_fstag(sb));
2251         } else
2252                 inode_init_owner(inode, dir, mode);
2253
2254 diff -NurpP --minimal linux-4.4.111/fs/ext2/inode.c linux-4.4.111-vs2.3.9.5/fs/ext2/inode.c
2255 --- linux-4.4.111/fs/ext2/inode.c       2016-07-05 04:15:07.000000000 +0000
2256 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/inode.c     2018-01-09 16:36:24.000000000 +0000
2257 @@ -33,6 +33,7 @@
2258  #include <linux/fiemap.h>
2259  #include <linux/namei.h>
2260  #include <linux/uio.h>
2261 +#include <linux/vs_tag.h>
2262  #include "ext2.h"
2263  #include "acl.h"
2264  #include "xattr.h"
2265 @@ -1188,7 +1189,7 @@ static void ext2_truncate_blocks(struct
2266                 return;
2267         if (ext2_inode_is_fast_symlink(inode))
2268                 return;
2269 -       if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
2270 +       if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
2271                 return;
2272
2273         dax_sem_down_write(EXT2_I(inode));
2274 @@ -1284,39 +1285,62 @@ void ext2_set_inode_flags(struct inode *
2275  {
2276         unsigned int flags = EXT2_I(inode)->i_flags;
2277
2278 -       inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
2279 -                               S_DIRSYNC | S_DAX);
2280 +       inode->i_flags &= ~(S_IMMUTABLE | S_IXUNLINK | S_DAX |
2281 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
2282 +
2283 +       if (flags & EXT2_IMMUTABLE_FL)
2284 +               inode->i_flags |= S_IMMUTABLE;
2285 +       if (flags & EXT2_IXUNLINK_FL)
2286 +               inode->i_flags |= S_IXUNLINK;
2287 +
2288         if (flags & EXT2_SYNC_FL)
2289                 inode->i_flags |= S_SYNC;
2290         if (flags & EXT2_APPEND_FL)
2291                 inode->i_flags |= S_APPEND;
2292 -       if (flags & EXT2_IMMUTABLE_FL)
2293 -               inode->i_flags |= S_IMMUTABLE;
2294         if (flags & EXT2_NOATIME_FL)
2295                 inode->i_flags |= S_NOATIME;
2296         if (flags & EXT2_DIRSYNC_FL)
2297                 inode->i_flags |= S_DIRSYNC;
2298         if (test_opt(inode->i_sb, DAX))
2299                 inode->i_flags |= S_DAX;
2300 +
2301 +       inode->i_vflags &= ~(V_BARRIER | V_COW);
2302 +
2303 +       if (flags & EXT2_BARRIER_FL)
2304 +               inode->i_vflags |= V_BARRIER;
2305 +       if (flags & EXT2_COW_FL)
2306 +               inode->i_vflags |= V_COW;
2307  }
2308
2309  /* Propagate flags from i_flags to EXT2_I(inode)->i_flags */
2310  void ext2_get_inode_flags(struct ext2_inode_info *ei)
2311  {
2312         unsigned int flags = ei->vfs_inode.i_flags;
2313 +       unsigned int vflags = ei->vfs_inode.i_vflags;
2314 +
2315 +       ei->i_flags &= ~(EXT2_SYNC_FL | EXT2_APPEND_FL |
2316 +                       EXT2_IMMUTABLE_FL | EXT2_IXUNLINK_FL |
2317 +                       EXT2_NOATIME_FL | EXT2_DIRSYNC_FL |
2318 +                       EXT2_BARRIER_FL | EXT2_COW_FL);
2319 +
2320 +       if (flags & S_IMMUTABLE)
2321 +               ei->i_flags |= EXT2_IMMUTABLE_FL;
2322 +       if (flags & S_IXUNLINK)
2323 +               ei->i_flags |= EXT2_IXUNLINK_FL;
2324
2325 -       ei->i_flags &= ~(EXT2_SYNC_FL|EXT2_APPEND_FL|
2326 -                       EXT2_IMMUTABLE_FL|EXT2_NOATIME_FL|EXT2_DIRSYNC_FL);
2327         if (flags & S_SYNC)
2328                 ei->i_flags |= EXT2_SYNC_FL;
2329         if (flags & S_APPEND)
2330                 ei->i_flags |= EXT2_APPEND_FL;
2331 -       if (flags & S_IMMUTABLE)
2332 -               ei->i_flags |= EXT2_IMMUTABLE_FL;
2333         if (flags & S_NOATIME)
2334                 ei->i_flags |= EXT2_NOATIME_FL;
2335         if (flags & S_DIRSYNC)
2336                 ei->i_flags |= EXT2_DIRSYNC_FL;
2337 +
2338 +       if (vflags & V_BARRIER)
2339 +               ei->i_flags |= EXT2_BARRIER_FL;
2340 +       if (vflags & V_COW)
2341 +               ei->i_flags |= EXT2_COW_FL;
2342  }
2343
2344  struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
2345 @@ -1352,8 +1376,10 @@ struct inode *ext2_iget (struct super_bl
2346                 i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
2347                 i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
2348         }
2349 -       i_uid_write(inode, i_uid);
2350 -       i_gid_write(inode, i_gid);
2351 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), i_uid, i_gid));
2352 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), i_uid, i_gid));
2353 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), i_uid, i_gid,
2354 +               le16_to_cpu(raw_inode->i_raw_tag)));
2355         set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
2356         inode->i_size = le32_to_cpu(raw_inode->i_size);
2357         inode->i_atime.tv_sec = (signed)le32_to_cpu(raw_inode->i_atime);
2358 @@ -1449,8 +1475,10 @@ static int __ext2_write_inode(struct ino
2359         struct ext2_inode_info *ei = EXT2_I(inode);
2360         struct super_block *sb = inode->i_sb;
2361         ino_t ino = inode->i_ino;
2362 -       uid_t uid = i_uid_read(inode);
2363 -       gid_t gid = i_gid_read(inode);
2364 +       uid_t uid = from_kuid(&init_user_ns,
2365 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
2366 +       gid_t gid = from_kgid(&init_user_ns,
2367 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
2368         struct buffer_head * bh;
2369         struct ext2_inode * raw_inode = ext2_get_inode(sb, ino, &bh);
2370         int n;
2371 @@ -1486,6 +1514,9 @@ static int __ext2_write_inode(struct ino
2372                 raw_inode->i_uid_high = 0;
2373                 raw_inode->i_gid_high = 0;
2374         }
2375 +#ifdef CONFIG_TAGGING_INTERN
2376 +       raw_inode->i_raw_tag = cpu_to_le16(i_tag_read(inode));
2377 +#endif
2378         raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
2379         raw_inode->i_size = cpu_to_le32(inode->i_size);
2380         raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
2381 @@ -1569,7 +1600,8 @@ int ext2_setattr(struct dentry *dentry,
2382                         return error;
2383         }
2384         if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
2385 -           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
2386 +           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid)) ||
2387 +           (iattr->ia_valid & ATTR_TAG && !tag_eq(iattr->ia_tag, inode->i_tag))) {
2388                 error = dquot_transfer(inode, iattr);
2389                 if (error)
2390                         return error;
2391 diff -NurpP --minimal linux-4.4.111/fs/ext2/ioctl.c linux-4.4.111-vs2.3.9.5/fs/ext2/ioctl.c
2392 --- linux-4.4.111/fs/ext2/ioctl.c       2015-04-12 22:12:50.000000000 +0000
2393 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/ioctl.c     2018-01-09 16:36:24.000000000 +0000
2394 @@ -17,6 +17,16 @@
2395  #include <asm/uaccess.h>
2396
2397
2398 +int ext2_sync_flags(struct inode *inode, int flags, int vflags)
2399 +{
2400 +       inode->i_flags = flags;
2401 +       inode->i_vflags = vflags;
2402 +       ext2_get_inode_flags(EXT2_I(inode));
2403 +       inode->i_ctime = CURRENT_TIME_SEC;
2404 +       mark_inode_dirty(inode);
2405 +       return 0;
2406 +}
2407 +
2408  long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2409  {
2410         struct inode *inode = file_inode(filp);
2411 @@ -51,6 +61,11 @@ long ext2_ioctl(struct file *filp, unsig
2412
2413                 flags = ext2_mask_flags(inode->i_mode, flags);
2414
2415 +               if (IS_BARRIER(inode)) {
2416 +                       vxwprintk_task(1, "messing with the barrier.");
2417 +                       return -EACCES;
2418 +               }
2419 +
2420                 mutex_lock(&inode->i_mutex);
2421                 /* Is it quota file? Do not allow user to mess with it */
2422                 if (IS_NOQUOTA(inode)) {
2423 @@ -66,7 +81,9 @@ long ext2_ioctl(struct file *filp, unsig
2424                  *
2425                  * This test looks nicer. Thanks to Pauline Middelink
2426                  */
2427 -               if ((flags ^ oldflags) & (EXT2_APPEND_FL | EXT2_IMMUTABLE_FL)) {
2428 +               if ((oldflags & EXT2_IMMUTABLE_FL) ||
2429 +                       ((flags ^ oldflags) & (EXT2_APPEND_FL |
2430 +                       EXT2_IMMUTABLE_FL | EXT2_IXUNLINK_FL))) {
2431                         if (!capable(CAP_LINUX_IMMUTABLE)) {
2432                                 mutex_unlock(&inode->i_mutex);
2433                                 ret = -EPERM;
2434 @@ -74,7 +91,7 @@ long ext2_ioctl(struct file *filp, unsig
2435                         }
2436                 }
2437
2438 -               flags = flags & EXT2_FL_USER_MODIFIABLE;
2439 +               flags &= EXT2_FL_USER_MODIFIABLE;
2440                 flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE;
2441                 ei->i_flags = flags;
2442
2443 diff -NurpP --minimal linux-4.4.111/fs/ext2/namei.c linux-4.4.111-vs2.3.9.5/fs/ext2/namei.c
2444 --- linux-4.4.111/fs/ext2/namei.c       2016-07-05 04:15:07.000000000 +0000
2445 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/namei.c     2018-01-09 16:36:24.000000000 +0000
2446 @@ -32,6 +32,7 @@
2447
2448  #include <linux/pagemap.h>
2449  #include <linux/quotaops.h>
2450 +#include <linux/vs_tag.h>
2451  #include "ext2.h"
2452  #include "xattr.h"
2453  #include "acl.h"
2454 @@ -72,6 +73,7 @@ static struct dentry *ext2_lookup(struct
2455                                         (unsigned long) ino);
2456                         return ERR_PTR(-EIO);
2457                 }
2458 +               dx_propagate_tag(nd, inode);
2459         }
2460         return d_splice_alias(inode, dentry);
2461  }
2462 @@ -446,6 +448,7 @@ const struct inode_operations ext2_speci
2463         .removexattr    = generic_removexattr,
2464  #endif
2465         .setattr        = ext2_setattr,
2466 +       .sync_flags     = ext2_sync_flags,
2467         .get_acl        = ext2_get_acl,
2468         .set_acl        = ext2_set_acl,
2469  };
2470 diff -NurpP --minimal linux-4.4.111/fs/ext2/super.c linux-4.4.111-vs2.3.9.5/fs/ext2/super.c
2471 --- linux-4.4.111/fs/ext2/super.c       2016-07-05 04:15:07.000000000 +0000
2472 +++ linux-4.4.111-vs2.3.9.5/fs/ext2/super.c     2018-01-09 16:36:24.000000000 +0000
2473 @@ -408,7 +408,8 @@ enum {
2474         Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug,
2475         Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
2476         Opt_acl, Opt_noacl, Opt_xip, Opt_dax, Opt_ignore, Opt_err, Opt_quota,
2477 -       Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation
2478 +       Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation,
2479 +       Opt_tag, Opt_notag, Opt_tagid
2480  };
2481
2482  static const match_table_t tokens = {
2483 @@ -436,6 +437,9 @@ static const match_table_t tokens = {
2484         {Opt_acl, "acl"},
2485         {Opt_noacl, "noacl"},
2486         {Opt_xip, "xip"},
2487 +       {Opt_tag, "tag"},
2488 +       {Opt_notag, "notag"},
2489 +       {Opt_tagid, "tagid=%u"},
2490         {Opt_dax, "dax"},
2491         {Opt_grpquota, "grpquota"},
2492         {Opt_ignore, "noquota"},
2493 @@ -520,6 +524,20 @@ static int parse_options(char *options,
2494                 case Opt_nouid32:
2495                         set_opt (sbi->s_mount_opt, NO_UID32);
2496                         break;
2497 +#ifndef CONFIG_TAGGING_NONE
2498 +               case Opt_tag:
2499 +                       set_opt (sbi->s_mount_opt, TAGGED);
2500 +                       break;
2501 +               case Opt_notag:
2502 +                       clear_opt (sbi->s_mount_opt, TAGGED);
2503 +                       break;
2504 +#endif
2505 +#ifdef CONFIG_PROPAGATE
2506 +               case Opt_tagid:
2507 +                       /* use args[0] */
2508 +                       set_opt (sbi->s_mount_opt, TAGGED);
2509 +                       break;
2510 +#endif
2511                 case Opt_nocheck:
2512                         clear_opt (sbi->s_mount_opt, CHECK);
2513                         break;
2514 @@ -884,6 +902,8 @@ static int ext2_fill_super(struct super_
2515         if (!parse_options((char *) data, sb))
2516                 goto failed_mount;
2517
2518 +       if (EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_TAGGED)
2519 +               sb->s_flags |= MS_TAGGED;
2520         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2521                 ((EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ?
2522                  MS_POSIXACL : 0);
2523 @@ -1294,6 +1314,14 @@ static int ext2_remount (struct super_bl
2524                 err = -EINVAL;
2525                 goto restore_opts;
2526         }
2527 +
2528 +       if ((sbi->s_mount_opt & EXT2_MOUNT_TAGGED) &&
2529 +               !(sb->s_flags & MS_TAGGED)) {
2530 +               printk("EXT2-fs: %s: tagging not permitted on remount.\n",
2531 +                      sb->s_id);
2532 +               err = -EINVAL;
2533 +               goto restore_opts;
2534 +       }
2535
2536         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2537                 ((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
2538 diff -NurpP --minimal linux-4.4.111/fs/ext4/ext4.h linux-4.4.111-vs2.3.9.5/fs/ext4/ext4.h
2539 --- linux-4.4.111/fs/ext4/ext4.h        2018-01-11 07:57:44.000000000 +0000
2540 +++ linux-4.4.111-vs2.3.9.5/fs/ext4/ext4.h      2018-01-09 17:33:10.000000000 +0000
2541 @@ -375,8 +375,11 @@ struct flex_groups {
2542  #define EXT4_EXTENTS_FL                        0x00080000 /* Inode uses extents */
2543  #define EXT4_EA_INODE_FL               0x00200000 /* Inode used for large EA */
2544  #define EXT4_EOFBLOCKS_FL              0x00400000 /* Blocks allocated beyond EOF */
2545 +#define EXT4_BARRIER_FL                        0x04000000 /* Barrier for chroot() */
2546 +#define EXT4_IXUNLINK_FL               0x08000000 /* Immutable invert on unlink */
2547  #define EXT4_INLINE_DATA_FL            0x10000000 /* Inode has inline data. */
2548  #define EXT4_PROJINHERIT_FL            0x20000000 /* Create with parents projid */
2549 +#define EXT4_COW_FL                    0x40000000 /* Copy on Write marker */
2550  #define EXT4_RESERVED_FL               0x80000000 /* reserved for ext4 lib */
2551
2552  #define EXT4_FL_USER_VISIBLE           0x004BDFFF /* User visible flags */
2553 @@ -674,7 +677,7 @@ struct ext4_inode {
2554                         __le16  l_i_uid_high;   /* these 2 fields */
2555                         __le16  l_i_gid_high;   /* were reserved2[0] */
2556                         __le16  l_i_checksum_lo;/* crc32c(uuid+inum+inode) LE */
2557 -                       __le16  l_i_reserved;
2558 +                       __le16  l_i_tag;        /* Context Tag */
2559                 } linux2;
2560                 struct {
2561                         __le16  h_i_reserved1;  /* Obsoleted fragment number/size which are removed in ext4 */
2562 @@ -831,6 +834,7 @@ do {                                                                               \
2563  #define i_gid_low      i_gid
2564  #define i_uid_high     osd2.linux2.l_i_uid_high
2565  #define i_gid_high     osd2.linux2.l_i_gid_high
2566 +#define i_raw_tag      osd2.linux2.l_i_tag
2567  #define i_checksum_lo  osd2.linux2.l_i_checksum_lo
2568
2569  #elif defined(__GNU__)
2570 @@ -1068,6 +1072,7 @@ struct ext4_inode_info {
2571  #define EXT4_MOUNT_POSIX_ACL           0x08000 /* POSIX Access Control Lists */
2572  #define EXT4_MOUNT_NO_AUTO_DA_ALLOC    0x10000 /* No auto delalloc mapping */
2573  #define EXT4_MOUNT_BARRIER             0x20000 /* Use block barriers */
2574 +#define EXT4_MOUNT_TAGGED              0x40000 /* Enable Context Tags */
2575  #define EXT4_MOUNT_QUOTA               0x80000 /* Some quota option set */
2576  #define EXT4_MOUNT_USRQUOTA            0x100000 /* "old" user quota */
2577  #define EXT4_MOUNT_GRPQUOTA            0x200000 /* "old" group quota */
2578 @@ -2501,6 +2506,7 @@ extern int ext4_punch_hole(struct inode
2579  extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks);
2580  extern void ext4_set_inode_flags(struct inode *);
2581  extern void ext4_get_inode_flags(struct ext4_inode_info *);
2582 +extern int ext4_sync_flags(struct inode *, int, int);
2583  extern int ext4_alloc_da_blocks(struct inode *inode);
2584  extern void ext4_set_aops(struct inode *inode);
2585  extern int ext4_writepage_trans_blocks(struct inode *);
2586 diff -NurpP --minimal linux-4.4.111/fs/ext4/file.c linux-4.4.111-vs2.3.9.5/fs/ext4/file.c
2587 --- linux-4.4.111/fs/ext4/file.c        2018-01-11 07:57:44.000000000 +0000
2588 +++ linux-4.4.111-vs2.3.9.5/fs/ext4/file.c      2018-01-09 16:36:31.000000000 +0000
2589 @@ -749,5 +749,6 @@ const struct inode_operations ext4_file_
2590         .get_acl        = ext4_get_acl,
2591         .set_acl        = ext4_set_acl,
2592         .fiemap         = ext4_fiemap,
2593 +       .sync_flags     = ext4_sync_flags,
2594  };
2595
2596 diff -NurpP --minimal linux-4.4.111/fs/ext4/ialloc.c linux-4.4.111-vs2.3.9.5/fs/ext4/ialloc.c
2597 --- linux-4.4.111/fs/ext4/ialloc.c      2018-01-11 07:57:44.000000000 +0000
2598 +++ linux-4.4.111-vs2.3.9.5/fs/ext4/ialloc.c    2018-01-09 16:36:31.000000000 +0000
2599 @@ -21,6 +21,7 @@
2600  #include <linux/random.h>
2601  #include <linux/bitops.h>
2602  #include <linux/blkdev.h>
2603 +#include <linux/vs_tag.h>
2604  #include <asm/byteorder.h>
2605
2606  #include "ext4.h"
2607 @@ -799,6 +800,7 @@ struct inode *__ext4_new_inode(handle_t
2608                 inode->i_mode = mode;
2609                 inode->i_uid = current_fsuid();
2610                 inode->i_gid = dir->i_gid;
2611 +               i_tag_write(inode, dx_current_fstag(sb));
2612         } else
2613                 inode_init_owner(inode, dir, mode);
2614         err = dquot_initialize(inode);
2615 diff -NurpP --minimal linux-4.4.111/fs/ext4/inode.c linux-4.4.111-vs2.3.9.5/fs/ext4/inode.c
2616 --- linux-4.4.111/fs/ext4/inode.c       2018-01-11 07:57:44.000000000 +0000
2617 +++ linux-4.4.111-vs2.3.9.5/fs/ext4/inode.c     2018-01-09 16:36:31.000000000 +0000
2618 @@ -37,6 +37,7 @@
2619  #include <linux/printk.h>
2620  #include <linux/slab.h>
2621  #include <linux/bitops.h>
2622 +#include <linux/vs_tag.h>
2623
2624  #include "ext4_jbd2.h"
2625  #include "xattr.h"
2626 @@ -4128,12 +4129,15 @@ void ext4_set_inode_flags(struct inode *
2627         unsigned int flags = EXT4_I(inode)->i_flags;
2628         unsigned int new_fl = 0;
2629
2630 +       if (flags & EXT4_IMMUTABLE_FL)
2631 +               new_fl |= S_IMMUTABLE;
2632 +       if (flags & EXT4_IXUNLINK_FL)
2633 +               new_fl |= S_IXUNLINK;
2634 +
2635         if (flags & EXT4_SYNC_FL)
2636                 new_fl |= S_SYNC;
2637         if (flags & EXT4_APPEND_FL)
2638                 new_fl |= S_APPEND;
2639 -       if (flags & EXT4_IMMUTABLE_FL)
2640 -               new_fl |= S_IMMUTABLE;
2641         if (flags & EXT4_NOATIME_FL)
2642                 new_fl |= S_NOATIME;
2643         if (flags & EXT4_DIRSYNC_FL)
2644 @@ -4141,31 +4145,52 @@ void ext4_set_inode_flags(struct inode *
2645         if (test_opt(inode->i_sb, DAX))
2646                 new_fl |= S_DAX;
2647         inode_set_flags(inode, new_fl,
2648 -                       S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_DAX);
2649 +               S_IXUNLINK | S_IMMUTABLE | S_DAX |
2650 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
2651 +
2652 +       new_fl = 0;
2653 +       if (flags & EXT4_BARRIER_FL)
2654 +               new_fl |= V_BARRIER;
2655 +       if (flags & EXT4_COW_FL)
2656 +               new_fl |= V_COW;
2657 +
2658 +       set_mask_bits(&inode->i_vflags,
2659 +               V_BARRIER | V_COW, new_fl);
2660  }
2661
2662  /* Propagate flags from i_flags to EXT4_I(inode)->i_flags */
2663  void ext4_get_inode_flags(struct ext4_inode_info *ei)
2664  {
2665 -       unsigned int vfs_fl;
2666 +       unsigned int vfs_fl, vfs_vf;
2667         unsigned long old_fl, new_fl;
2668
2669         do {
2670                 vfs_fl = ei->vfs_inode.i_flags;
2671 +               vfs_vf = ei->vfs_inode.i_vflags;
2672                 old_fl = ei->i_flags;
2673                 new_fl = old_fl & ~(EXT4_SYNC_FL|EXT4_APPEND_FL|
2674                                 EXT4_IMMUTABLE_FL|EXT4_NOATIME_FL|
2675 -                               EXT4_DIRSYNC_FL);
2676 +                               EXT4_DIRSYNC_FL|EXT4_BARRIER_FL|
2677 +                               EXT4_COW_FL);
2678 +
2679 +               if (vfs_fl & S_IMMUTABLE)
2680 +                       new_fl |= EXT4_IMMUTABLE_FL;
2681 +               if (vfs_fl & S_IXUNLINK)
2682 +                       new_fl |= EXT4_IXUNLINK_FL;
2683 +
2684                 if (vfs_fl & S_SYNC)
2685                         new_fl |= EXT4_SYNC_FL;
2686                 if (vfs_fl & S_APPEND)
2687                         new_fl |= EXT4_APPEND_FL;
2688 -               if (vfs_fl & S_IMMUTABLE)
2689 -                       new_fl |= EXT4_IMMUTABLE_FL;
2690                 if (vfs_fl & S_NOATIME)
2691                         new_fl |= EXT4_NOATIME_FL;
2692                 if (vfs_fl & S_DIRSYNC)
2693                         new_fl |= EXT4_DIRSYNC_FL;
2694 +
2695 +               if (vfs_vf & V_BARRIER)
2696 +                       new_fl |= EXT4_BARRIER_FL;
2697 +               if (vfs_vf & V_COW)
2698 +                       new_fl |= EXT4_COW_FL;
2699         } while (cmpxchg(&ei->i_flags, old_fl, new_fl) != old_fl);
2700  }
2701
2702 @@ -4269,8 +4294,10 @@ struct inode *ext4_iget(struct super_blo
2703                 i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
2704                 i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
2705         }
2706 -       i_uid_write(inode, i_uid);
2707 -       i_gid_write(inode, i_gid);
2708 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), i_uid, i_gid));
2709 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), i_uid, i_gid));
2710 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), i_uid, i_gid,
2711 +               le16_to_cpu(raw_inode->i_raw_tag)));
2712         set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
2713
2714         ext4_clear_state_flags(ei);     /* Only relevant on 32-bit archs */
2715 @@ -4583,8 +4610,10 @@ static int ext4_do_update_inode(handle_t
2716
2717         ext4_get_inode_flags(ei);
2718         raw_inode->i_mode = cpu_to_le16(inode->i_mode);
2719 -       i_uid = i_uid_read(inode);
2720 -       i_gid = i_gid_read(inode);
2721 +       i_uid = from_kuid(&init_user_ns,
2722 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
2723 +       i_gid = from_kgid(&init_user_ns,
2724 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
2725         if (!(test_opt(inode->i_sb, NO_UID32))) {
2726                 raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
2727                 raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid));
2728 @@ -4607,6 +4636,9 @@ static int ext4_do_update_inode(handle_t
2729                 raw_inode->i_uid_high = 0;
2730                 raw_inode->i_gid_high = 0;
2731         }
2732 +#ifdef CONFIG_TAGGING_INTERN
2733 +       raw_inode->i_raw_tag = cpu_to_le16(i_tag_read(inode));
2734 +#endif
2735         raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
2736
2737         EXT4_INODE_SET_XTIME(i_ctime, inode, raw_inode);
2738 @@ -4852,7 +4884,8 @@ int ext4_setattr(struct dentry *dentry,
2739                         return error;
2740         }
2741         if ((ia_valid & ATTR_UID && !uid_eq(attr->ia_uid, inode->i_uid)) ||
2742 -           (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid))) {
2743 +           (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid)) ||
2744 +           (ia_valid & ATTR_TAG && !tag_eq(attr->ia_tag, inode->i_tag))) {
2745                 handle_t *handle;
2746
2747                 /* (user+group)*(old+new) structure, inode write (sb,
2748 @@ -4875,6 +4908,8 @@ int ext4_setattr(struct dentry *dentry,
2749                         inode->i_uid = attr->ia_uid;
2750                 if (attr->ia_valid & ATTR_GID)
2751                         inode->i_gid = attr->ia_gid;
2752 +               if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
2753 +                       inode->i_tag = attr->ia_tag;
2754                 error = ext4_mark_inode_dirty(handle, inode);
2755                 ext4_journal_stop(handle);
2756         }
2757 diff -NurpP --minimal linux-4.4.111/fs/ext4/ioctl.c linux-4.4.111-vs2.3.9.5/fs/ext4/ioctl.c
2758 --- linux-4.4.111/fs/ext4/ioctl.c       2018-01-11 07:57:44.000000000 +0000
2759 +++ linux-4.4.111-vs2.3.9.5/fs/ext4/ioctl.c     2018-01-09 16:36:31.000000000 +0000
2760 @@ -14,6 +14,7 @@
2761  #include <linux/mount.h>
2762  #include <linux/file.h>
2763  #include <linux/random.h>
2764 +#include <linux/vs_tag.h>
2765  #include <asm/uaccess.h>
2766  #include "ext4_jbd2.h"
2767  #include "ext4.h"
2768 @@ -202,6 +203,33 @@ static int uuid_is_zero(__u8 u[16])
2769         return 1;
2770  }
2771
2772 +int ext4_sync_flags(struct inode *inode, int flags, int vflags)
2773 +{
2774 +       handle_t *handle = NULL;
2775 +       struct ext4_iloc iloc;
2776 +       int err;
2777 +
2778 +       handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
2779 +       if (IS_ERR(handle))
2780 +               return PTR_ERR(handle);
2781 +
2782 +       if (IS_SYNC(inode))
2783 +               ext4_handle_sync(handle);
2784 +       err = ext4_reserve_inode_write(handle, inode, &iloc);
2785 +       if (err)
2786 +               goto flags_err;
2787 +
2788 +       inode->i_flags = flags;
2789 +       inode->i_vflags = vflags;
2790 +       ext4_get_inode_flags(EXT4_I(inode));
2791 +       inode->i_ctime = ext4_current_time(inode);
2792 +
2793 +       err = ext4_mark_iloc_dirty(handle, inode, &iloc);
2794 +flags_err:
2795 +       ext4_journal_stop(handle);
2796 +       return err;
2797 +}
2798 +
2799  long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2800  {
2801         struct inode *inode = file_inode(filp);
2802 @@ -235,6 +263,11 @@ long ext4_ioctl(struct file *filp, unsig
2803
2804                 flags = ext4_mask_flags(inode->i_mode, flags);
2805
2806 +               if (IS_BARRIER(inode)) {
2807 +                       vxwprintk_task(1, "messing with the barrier.");
2808 +                       return -EACCES;
2809 +               }
2810 +
2811                 err = -EPERM;
2812                 mutex_lock(&inode->i_mutex);
2813                 /* Is it quota file? Do not allow user to mess with it */
2814 @@ -252,7 +285,9 @@ long ext4_ioctl(struct file *filp, unsig
2815                  *
2816                  * This test looks nicer. Thanks to Pauline Middelink
2817                  */
2818 -               if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
2819 +               if ((oldflags & EXT4_IMMUTABLE_FL) ||
2820 +                       ((flags ^ oldflags) & (EXT4_APPEND_FL |
2821 +                       EXT4_IMMUTABLE_FL | EXT4_IXUNLINK_FL))) {
2822                         if (!capable(CAP_LINUX_IMMUTABLE))
2823                                 goto flags_out;
2824                 }
2825 diff -NurpP --minimal linux-4.4.111/fs/ext4/namei.c linux-4.4.111-vs2.3.9.5/fs/ext4/namei.c
2826 --- linux-4.4.111/fs/ext4/namei.c       2018-01-11 07:57:44.000000000 +0000
2827 +++ linux-4.4.111-vs2.3.9.5/fs/ext4/namei.c     2018-01-09 16:36:31.000000000 +0000
2828 @@ -33,6 +33,7 @@
2829  #include <linux/quotaops.h>
2830  #include <linux/buffer_head.h>
2831  #include <linux/bio.h>
2832 +#include <linux/vs_tag.h>
2833  #include "ext4.h"
2834  #include "ext4_jbd2.h"
2835
2836 @@ -1444,6 +1445,7 @@ restart:
2837                                         ll_rw_block(READ | REQ_META | REQ_PRIO,
2838                                                     1, &bh);
2839                         }
2840 +               dx_propagate_tag(nd, inode);
2841                 }
2842                 if ((bh = bh_use[ra_ptr++]) == NULL)
2843                         goto next;
2844 @@ -3881,6 +3883,7 @@ const struct inode_operations ext4_dir_i
2845         .get_acl        = ext4_get_acl,
2846         .set_acl        = ext4_set_acl,
2847         .fiemap         = ext4_fiemap,
2848 +       .sync_flags     = ext4_sync_flags,
2849  };
2850
2851  const struct inode_operations ext4_special_inode_operations = {
2852 diff -NurpP --minimal linux-4.4.111/fs/ext4/super.c linux-4.4.111-vs2.3.9.5/fs/ext4/super.c
2853 --- linux-4.4.111/fs/ext4/super.c       2018-01-11 07:57:44.000000000 +0000
2854 +++ linux-4.4.111-vs2.3.9.5/fs/ext4/super.c     2018-01-09 16:36:32.000000000 +0000
2855 @@ -1165,6 +1165,7 @@ enum {
2856         Opt_dioread_nolock, Opt_dioread_lock,
2857         Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
2858         Opt_max_dir_size_kb, Opt_nojournal_checksum,
2859 +       Opt_tag, Opt_notag, Opt_tagid
2860  };
2861
2862  static const match_table_t tokens = {
2863 @@ -1250,6 +1251,9 @@ static const match_table_t tokens = {
2864         {Opt_removed, "reservation"},   /* mount option from ext2/3 */
2865         {Opt_removed, "noreservation"}, /* mount option from ext2/3 */
2866         {Opt_removed, "journal=%u"},    /* mount option from ext2/3 */
2867 +       {Opt_tag, "tag"},
2868 +       {Opt_notag, "notag"},
2869 +       {Opt_tagid, "tagid=%u"},
2870         {Opt_err, NULL},
2871  };
2872
2873 @@ -1492,6 +1496,20 @@ static int handle_mount_opt(struct super
2874         case Opt_nolazytime:
2875                 sb->s_flags &= ~MS_LAZYTIME;
2876                 return 1;
2877 +#ifndef CONFIG_TAGGING_NONE
2878 +       case Opt_tag:
2879 +               set_opt(sb, TAGGED);
2880 +               return 1;
2881 +       case Opt_notag:
2882 +               clear_opt(sb, TAGGED);
2883 +               return 1;
2884 +#endif
2885 +#ifdef CONFIG_PROPAGATE
2886 +       case Opt_tagid:
2887 +               /* use args[0] */
2888 +               set_opt(sb, TAGGED);
2889 +               return 1;
2890 +#endif
2891         }
2892
2893         for (m = ext4_mount_opts; m->token != Opt_err; m++)
2894 @@ -3379,6 +3397,9 @@ static int ext4_fill_super(struct super_
2895                 sb->s_iflags |= SB_I_CGROUPWB;
2896         }
2897
2898 +       if (EXT4_SB(sb)->s_mount_opt & EXT4_MOUNT_TAGGED)
2899 +               sb->s_flags |= MS_TAGGED;
2900 +
2901         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2902                 (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
2903
2904 @@ -4727,6 +4748,14 @@ static int ext4_remount(struct super_blo
2905         if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED)
2906                 ext4_abort(sb, "Abort forced by user");
2907
2908 +       if ((sbi->s_mount_opt & EXT4_MOUNT_TAGGED) &&
2909 +               !(sb->s_flags & MS_TAGGED)) {
2910 +               printk("EXT4-fs: %s: tagging not permitted on remount.\n",
2911 +                       sb->s_id);
2912 +               err = -EINVAL;
2913 +               goto restore_opts;
2914 +       }
2915 +
2916         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2917                 (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
2918
2919 diff -NurpP --minimal linux-4.4.111/fs/fcntl.c linux-4.4.111-vs2.3.9.5/fs/fcntl.c
2920 --- linux-4.4.111/fs/fcntl.c    2018-01-11 07:57:44.000000000 +0000
2921 +++ linux-4.4.111-vs2.3.9.5/fs/fcntl.c  2018-01-09 16:36:32.000000000 +0000
2922 @@ -22,6 +22,7 @@
2923  #include <linux/pid_namespace.h>
2924  #include <linux/user_namespace.h>
2925  #include <linux/shmem_fs.h>
2926 +#include <linux/vs_limit.h>
2927
2928  #include <asm/poll.h>
2929  #include <asm/siginfo.h>
2930 @@ -385,6 +386,8 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, f
2931
2932         if (!f.file)
2933                 goto out;
2934 +       if (!vx_files_avail(1))
2935 +               goto out;
2936
2937         if (unlikely(f.file->f_mode & FMODE_PATH)) {
2938                 if (!check_fcntl_cmd(cmd))
2939 diff -NurpP --minimal linux-4.4.111/fs/file.c linux-4.4.111-vs2.3.9.5/fs/file.c
2940 --- linux-4.4.111/fs/file.c     2016-07-05 04:15:07.000000000 +0000
2941 +++ linux-4.4.111-vs2.3.9.5/fs/file.c   2018-01-09 16:36:32.000000000 +0000
2942 @@ -22,6 +22,7 @@
2943  #include <linux/spinlock.h>
2944  #include <linux/rcupdate.h>
2945  #include <linux/workqueue.h>
2946 +#include <linux/vs_limit.h>
2947
2948  int sysctl_nr_open __read_mostly = 1024*1024;
2949  int sysctl_nr_open_min = BITS_PER_LONG;
2950 @@ -356,6 +357,8 @@ struct files_struct *dup_fd(struct files
2951                 struct file *f = *old_fds++;
2952                 if (f) {
2953                         get_file(f);
2954 +                       /* TODO: sum it first for check and performance */
2955 +                       vx_openfd_inc(open_files - i);
2956                 } else {
2957                         /*
2958                          * The fd may be claimed in the fd bitmap but not yet
2959 @@ -405,9 +408,11 @@ static struct fdtable *close_files(struc
2960                                         filp_close(file, files);
2961                                         cond_resched_rcu_qs();
2962                                 }
2963 +                               vx_openfd_dec(i);
2964                         }
2965                         i++;
2966                         set >>= 1;
2967 +                       cond_resched();
2968                 }
2969         }
2970
2971 @@ -538,6 +543,7 @@ repeat:
2972         else
2973                 __clear_close_on_exec(fd, fdt);
2974         error = fd;
2975 +       vx_openfd_inc(fd);
2976  #if 1
2977         /* Sanity check */
2978         if (rcu_access_pointer(fdt->fd[fd]) != NULL) {
2979 @@ -568,6 +574,7 @@ static void __put_unused_fd(struct files
2980         __clear_open_fd(fd, fdt);
2981         if (fd < files->next_fd)
2982                 files->next_fd = fd;
2983 +       vx_openfd_dec(fd);
2984  }
2985
2986  void put_unused_fd(unsigned int fd)
2987 @@ -850,6 +857,8 @@ __releases(&files->file_lock)
2988
2989         if (tofree)
2990                 filp_close(tofree, files);
2991 +       else
2992 +               vx_openfd_inc(fd);      /* fd was unused */
2993
2994         return fd;
2995
2996 diff -NurpP --minimal linux-4.4.111/fs/file_table.c linux-4.4.111-vs2.3.9.5/fs/file_table.c
2997 --- linux-4.4.111/fs/file_table.c       2015-10-29 09:21:35.000000000 +0000
2998 +++ linux-4.4.111-vs2.3.9.5/fs/file_table.c     2018-01-09 17:25:51.000000000 +0000
2999 @@ -26,6 +26,8 @@
3000  #include <linux/task_work.h>
3001  #include <linux/ima.h>
3002  #include <linux/swap.h>
3003 +#include <linux/vs_limit.h>
3004 +#include <linux/vs_context.h>
3005
3006  #include <linux/atomic.h>
3007
3008 @@ -137,6 +139,8 @@ struct file *get_empty_filp(void)
3009         mutex_init(&f->f_pos_lock);
3010         eventpoll_init_file(f);
3011         /* f->f_version: 0 */
3012 +       f->f_xid = vx_current_xid();
3013 +       vx_files_inc(f);
3014         return f;
3015
3016  over:
3017 @@ -219,6 +223,8 @@ static void __fput(struct file *file)
3018                 put_write_access(inode);
3019                 __mnt_drop_write(mnt);
3020         }
3021 +       vx_files_dec(file);
3022 +       file->f_xid = 0;
3023         file->f_path.dentry = NULL;
3024         file->f_path.mnt = NULL;
3025         file->f_inode = NULL;
3026 @@ -305,6 +311,8 @@ void put_filp(struct file *file)
3027  {
3028         if (atomic_long_dec_and_test(&file->f_count)) {
3029                 security_file_free(file);
3030 +               vx_files_dec(file);
3031 +               file->f_xid = 0;
3032                 file_free(file);
3033         }
3034  }
3035 diff -NurpP --minimal linux-4.4.111/fs/fs_struct.c linux-4.4.111-vs2.3.9.5/fs/fs_struct.c
3036 --- linux-4.4.111/fs/fs_struct.c        2015-04-12 22:12:50.000000000 +0000
3037 +++ linux-4.4.111-vs2.3.9.5/fs/fs_struct.c      2018-01-09 16:36:32.000000000 +0000
3038 @@ -4,6 +4,7 @@
3039  #include <linux/path.h>
3040  #include <linux/slab.h>
3041  #include <linux/fs_struct.h>
3042 +#include <linux/vserver/global.h>
3043  #include "internal.h"
3044
3045  /*
3046 @@ -87,6 +88,7 @@ void free_fs_struct(struct fs_struct *fs
3047  {
3048         path_put(&fs->root);
3049         path_put(&fs->pwd);
3050 +       atomic_dec(&vs_global_fs);
3051         kmem_cache_free(fs_cachep, fs);
3052  }
3053
3054 @@ -124,6 +126,7 @@ struct fs_struct *copy_fs_struct(struct
3055                 fs->pwd = old->pwd;
3056                 path_get(&fs->pwd);
3057                 spin_unlock(&old->lock);
3058 +               atomic_inc(&vs_global_fs);
3059         }
3060         return fs;
3061  }
3062 diff -NurpP --minimal linux-4.4.111/fs/gfs2/file.c linux-4.4.111-vs2.3.9.5/fs/gfs2/file.c
3063 --- linux-4.4.111/fs/gfs2/file.c        2018-01-11 07:57:44.000000000 +0000
3064 +++ linux-4.4.111-vs2.3.9.5/fs/gfs2/file.c      2018-01-09 17:23:53.000000000 +0000
3065 @@ -137,6 +137,9 @@ static const u32 fsflags_to_gfs2[32] = {
3066         [12] = GFS2_DIF_EXHASH,
3067         [14] = GFS2_DIF_INHERIT_JDATA,
3068         [17] = GFS2_DIF_TOPDIR,
3069 +       [27] = GFS2_DIF_IXUNLINK,
3070 +       [26] = GFS2_DIF_BARRIER,
3071 +       [29] = GFS2_DIF_COW,
3072  };
3073
3074  static const u32 gfs2_to_fsflags[32] = {
3075 @@ -147,6 +150,9 @@ static const u32 gfs2_to_fsflags[32] = {
3076         [gfs2fl_ExHash] = FS_INDEX_FL,
3077         [gfs2fl_TopLevel] = FS_TOPDIR_FL,
3078         [gfs2fl_InheritJdata] = FS_JOURNAL_DATA_FL,
3079 +       [gfs2fl_IXUnlink] = FS_IXUNLINK_FL,
3080 +       [gfs2fl_Barrier] = FS_BARRIER_FL,
3081 +       [gfs2fl_Cow] = FS_COW_FL,
3082  };
3083
3084  static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
3085 @@ -177,12 +183,17 @@ void gfs2_set_inode_flags(struct inode *
3086  {
3087         struct gfs2_inode *ip = GFS2_I(inode);
3088         unsigned int flags = inode->i_flags;
3089 +       unsigned int vflags = inode->i_vflags;
3090
3091 -       flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_NOSEC);
3092 +       flags &= ~(S_IMMUTABLE | S_IXUNLINK |
3093 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC | S_NOSEC);
3094 +
3095         if ((ip->i_eattr == 0) && !is_sxid(inode->i_mode))
3096                 flags |= S_NOSEC;
3097         if (ip->i_diskflags & GFS2_DIF_IMMUTABLE)
3098                 flags |= S_IMMUTABLE;
3099 +       if (ip->i_diskflags & GFS2_DIF_IXUNLINK)
3100 +               flags |= S_IXUNLINK;
3101         if (ip->i_diskflags & GFS2_DIF_APPENDONLY)
3102                 flags |= S_APPEND;
3103         if (ip->i_diskflags & GFS2_DIF_NOATIME)
3104 @@ -190,6 +201,43 @@ void gfs2_set_inode_flags(struct inode *
3105         if (ip->i_diskflags & GFS2_DIF_SYNC)
3106                 flags |= S_SYNC;
3107         inode->i_flags = flags;
3108 +
3109 +       vflags &= ~(V_BARRIER | V_COW);
3110 +
3111 +       if (ip->i_diskflags & GFS2_DIF_BARRIER)
3112 +               vflags |= V_BARRIER;
3113 +       if (ip->i_diskflags & GFS2_DIF_COW)
3114 +               vflags |= V_COW;
3115 +       inode->i_vflags = vflags;
3116 +}
3117 +
3118 +void gfs2_get_inode_flags(struct inode *inode)
3119 +{
3120 +       struct gfs2_inode *ip = GFS2_I(inode);
3121 +       unsigned int flags = inode->i_flags;
3122 +       unsigned int vflags = inode->i_vflags;
3123 +
3124 +       ip->i_diskflags &= ~(GFS2_DIF_APPENDONLY |
3125 +                       GFS2_DIF_NOATIME | GFS2_DIF_SYNC |
3126 +                       GFS2_DIF_IMMUTABLE | GFS2_DIF_IXUNLINK |
3127 +                       GFS2_DIF_BARRIER | GFS2_DIF_COW);
3128 +
3129 +       if (flags & S_IMMUTABLE)
3130 +               ip->i_diskflags |= GFS2_DIF_IMMUTABLE;
3131 +       if (flags & S_IXUNLINK)
3132 +               ip->i_diskflags |= GFS2_DIF_IXUNLINK;
3133 +
3134 +       if (flags & S_APPEND)
3135 +               ip->i_diskflags |= GFS2_DIF_APPENDONLY;
3136 +       if (flags & S_NOATIME)
3137 +               ip->i_diskflags |= GFS2_DIF_NOATIME;
3138 +       if (flags & S_SYNC)
3139 +               ip->i_diskflags |= GFS2_DIF_SYNC;
3140 +
3141 +       if (vflags & V_BARRIER)
3142 +               ip->i_diskflags |= GFS2_DIF_BARRIER;
3143 +       if (vflags & V_COW)
3144 +               ip->i_diskflags |= GFS2_DIF_COW;
3145  }
3146
3147  /* Flags that can be set by user space */
3148 @@ -305,6 +353,37 @@ static int gfs2_set_flags(struct file *f
3149         return do_gfs2_set_flags(filp, gfsflags, ~GFS2_DIF_JDATA);
3150  }
3151
3152 +int gfs2_sync_flags(struct inode *inode, int flags, int vflags)
3153 +{
3154 +       struct gfs2_inode *ip = GFS2_I(inode);
3155 +       struct gfs2_sbd *sdp = GFS2_SB(inode);
3156 +       struct buffer_head *bh;
3157 +       struct gfs2_holder gh;
3158 +       int error;
3159 +
3160 +       error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
3161 +       if (error)
3162 +               return error;
3163 +       error = gfs2_trans_begin(sdp, RES_DINODE, 0);
3164 +       if (error)
3165 +               goto out;
3166 +       error = gfs2_meta_inode_buffer(ip, &bh);
3167 +       if (error)
3168 +               goto out_trans_end;
3169 +       gfs2_trans_add_meta(ip->i_gl, bh);
3170 +       inode->i_flags = flags;
3171 +       inode->i_vflags = vflags;
3172 +       gfs2_get_inode_flags(inode);
3173 +       gfs2_dinode_out(ip, bh->b_data);
3174 +       brelse(bh);
3175 +       gfs2_set_aops(inode);
3176 +out_trans_end:
3177 +       gfs2_trans_end(sdp);
3178 +out:
3179 +       gfs2_glock_dq_uninit(&gh);
3180 +       return error;
3181 +}
3182 +
3183  static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3184  {
3185         switch(cmd) {
3186 diff -NurpP --minimal linux-4.4.111/fs/gfs2/inode.h linux-4.4.111-vs2.3.9.5/fs/gfs2/inode.h
3187 --- linux-4.4.111/fs/gfs2/inode.h       2015-04-12 22:12:50.000000000 +0000
3188 +++ linux-4.4.111-vs2.3.9.5/fs/gfs2/inode.h     2018-01-09 16:36:32.000000000 +0000
3189 @@ -118,6 +118,7 @@ extern const struct file_operations gfs2
3190  extern const struct file_operations gfs2_dir_fops_nolock;
3191
3192  extern void gfs2_set_inode_flags(struct inode *inode);
3193 +extern int gfs2_sync_flags(struct inode *inode, int flags, int vflags);
3194
3195  #ifdef CONFIG_GFS2_FS_LOCKING_DLM
3196  extern const struct file_operations gfs2_file_fops;
3197 diff -NurpP --minimal linux-4.4.111/fs/hostfs/hostfs.h linux-4.4.111-vs2.3.9.5/fs/hostfs/hostfs.h
3198 --- linux-4.4.111/fs/hostfs/hostfs.h    2015-07-06 20:41:42.000000000 +0000
3199 +++ linux-4.4.111-vs2.3.9.5/fs/hostfs/hostfs.h  2018-01-09 16:36:32.000000000 +0000
3200 @@ -42,6 +42,7 @@ struct hostfs_iattr {
3201         unsigned short  ia_mode;
3202         uid_t           ia_uid;
3203         gid_t           ia_gid;
3204 +       vtag_t          ia_tag;
3205         loff_t          ia_size;
3206         struct timespec ia_atime;
3207         struct timespec ia_mtime;
3208 diff -NurpP --minimal linux-4.4.111/fs/inode.c linux-4.4.111-vs2.3.9.5/fs/inode.c
3209 --- linux-4.4.111/fs/inode.c    2018-01-11 07:57:45.000000000 +0000
3210 +++ linux-4.4.111-vs2.3.9.5/fs/inode.c  2018-01-09 16:36:32.000000000 +0000
3211 @@ -18,6 +18,7 @@
3212  #include <linux/buffer_head.h> /* for inode_has_buffers */
3213  #include <linux/ratelimit.h>
3214  #include <linux/list_lru.h>
3215 +#include <linux/vs_tag.h>
3216  #include <trace/events/writeback.h>
3217  #include "internal.h"
3218
3219 @@ -133,6 +134,8 @@ int inode_init_always(struct super_block
3220         struct address_space *const mapping = &inode->i_data;
3221
3222         inode->i_sb = sb;
3223 +
3224 +       /* essential because of inode slab reuse */
3225         inode->i_blkbits = sb->s_blocksize_bits;
3226         inode->i_flags = 0;
3227         atomic_set(&inode->i_count, 1);
3228 @@ -142,6 +145,7 @@ int inode_init_always(struct super_block
3229         inode->i_opflags = 0;
3230         i_uid_write(inode, 0);
3231         i_gid_write(inode, 0);
3232 +       i_tag_write(inode, 0);
3233         atomic_set(&inode->i_writecount, 0);
3234         inode->i_size = 0;
3235         inode->i_blocks = 0;
3236 @@ -152,6 +156,7 @@ int inode_init_always(struct super_block
3237         inode->i_cdev = NULL;
3238         inode->i_link = NULL;
3239         inode->i_rdev = 0;
3240 +       inode->i_mdev = 0;
3241         inode->dirtied_when = 0;
3242
3243         if (security_inode_alloc(inode))
3244 @@ -469,6 +474,8 @@ void __insert_inode_hash(struct inode *i
3245  }
3246  EXPORT_SYMBOL(__insert_inode_hash);
3247
3248 +EXPORT_SYMBOL_GPL(__iget);
3249 +
3250  /**
3251   *     __remove_inode_hash - remove an inode from the hash
3252   *     @inode: inode to unhash
3253 @@ -1911,9 +1918,11 @@ void init_special_inode(struct inode *in
3254         if (S_ISCHR(mode)) {
3255                 inode->i_fop = &def_chr_fops;
3256                 inode->i_rdev = rdev;
3257 +               inode->i_mdev = rdev;
3258         } else if (S_ISBLK(mode)) {
3259                 inode->i_fop = &def_blk_fops;
3260                 inode->i_rdev = rdev;
3261 +               inode->i_mdev = rdev;
3262         } else if (S_ISFIFO(mode))
3263                 inode->i_fop = &pipefifo_fops;
3264         else if (S_ISSOCK(mode))
3265 @@ -1942,6 +1951,7 @@ void inode_init_owner(struct inode *inod
3266         } else
3267                 inode->i_gid = current_fsgid();
3268         inode->i_mode = mode;
3269 +       i_tag_write(inode, dx_current_fstag(inode->i_sb));
3270  }
3271  EXPORT_SYMBOL(inode_init_owner);
3272
3273 diff -NurpP --minimal linux-4.4.111/fs/ioctl.c linux-4.4.111-vs2.3.9.5/fs/ioctl.c
3274 --- linux-4.4.111/fs/ioctl.c    2015-04-12 22:12:50.000000000 +0000
3275 +++ linux-4.4.111-vs2.3.9.5/fs/ioctl.c  2018-01-09 16:36:32.000000000 +0000
3276 @@ -15,6 +15,9 @@
3277  #include <linux/writeback.h>
3278  #include <linux/buffer_head.h>
3279  #include <linux/falloc.h>
3280 +#include <linux/proc_fs.h>
3281 +#include <linux/vserver/inode.h>
3282 +#include <linux/vs_tag.h>
3283
3284  #include <asm/ioctls.h>
3285
3286 diff -NurpP --minimal linux-4.4.111/fs/jfs/file.c linux-4.4.111-vs2.3.9.5/fs/jfs/file.c
3287 --- linux-4.4.111/fs/jfs/file.c 2016-07-05 04:12:33.000000000 +0000
3288 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/file.c       2018-01-09 16:36:32.000000000 +0000
3289 @@ -113,7 +113,8 @@ int jfs_setattr(struct dentry *dentry, s
3290                         return rc;
3291         }
3292         if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
3293 -           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
3294 +           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid)) ||
3295 +           (iattr->ia_valid & ATTR_TAG && !tag_eq(iattr->ia_tag, inode->i_tag))) {
3296                 rc = dquot_transfer(inode, iattr);
3297                 if (rc)
3298                         return rc;
3299 @@ -149,6 +150,7 @@ const struct inode_operations jfs_file_i
3300         .get_acl        = jfs_get_acl,
3301         .set_acl        = jfs_set_acl,
3302  #endif
3303 +       .sync_flags     = jfs_sync_flags,
3304  };
3305
3306  const struct file_operations jfs_file_operations = {
3307 diff -NurpP --minimal linux-4.4.111/fs/jfs/ioctl.c linux-4.4.111-vs2.3.9.5/fs/jfs/ioctl.c
3308 --- linux-4.4.111/fs/jfs/ioctl.c        2015-10-29 09:21:36.000000000 +0000
3309 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/ioctl.c      2018-01-09 16:36:32.000000000 +0000
3310 @@ -12,6 +12,7 @@
3311  #include <linux/time.h>
3312  #include <linux/sched.h>
3313  #include <linux/blkdev.h>
3314 +#include <linux/mount.h>
3315  #include <asm/current.h>
3316  #include <asm/uaccess.h>
3317
3318 @@ -56,6 +57,16 @@ static long jfs_map_ext2(unsigned long f
3319  }
3320
3321
3322 +int jfs_sync_flags(struct inode *inode, int flags, int vflags)
3323 +{
3324 +       inode->i_flags = flags;
3325 +       inode->i_vflags = vflags;
3326 +       jfs_get_inode_flags(JFS_IP(inode));
3327 +       inode->i_ctime = CURRENT_TIME_SEC;
3328 +       mark_inode_dirty(inode);
3329 +       return 0;
3330 +}
3331 +
3332  long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3333  {
3334         struct inode *inode = file_inode(filp);
3335 @@ -89,6 +100,11 @@ long jfs_ioctl(struct file *filp, unsign
3336                 if (!S_ISDIR(inode->i_mode))
3337                         flags &= ~JFS_DIRSYNC_FL;
3338
3339 +               if (IS_BARRIER(inode)) {
3340 +                       vxwprintk_task(1, "messing with the barrier.");
3341 +                       return -EACCES;
3342 +               }
3343 +
3344                 /* Is it quota file? Do not allow user to mess with it */
3345                 if (IS_NOQUOTA(inode)) {
3346                         err = -EPERM;
3347 @@ -106,8 +122,8 @@ long jfs_ioctl(struct file *filp, unsign
3348                  * the relevant capability.
3349                  */
3350                 if ((oldflags & JFS_IMMUTABLE_FL) ||
3351 -                       ((flags ^ oldflags) &
3352 -                       (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) {
3353 +                       ((flags ^ oldflags) & (JFS_APPEND_FL |
3354 +                       JFS_IMMUTABLE_FL | JFS_IXUNLINK_FL))) {
3355                         if (!capable(CAP_LINUX_IMMUTABLE)) {
3356                                 mutex_unlock(&inode->i_mutex);
3357                                 err = -EPERM;
3358 @@ -115,7 +131,7 @@ long jfs_ioctl(struct file *filp, unsign
3359                         }
3360                 }
3361
3362 -               flags = flags & JFS_FL_USER_MODIFIABLE;
3363 +               flags &= JFS_FL_USER_MODIFIABLE;
3364                 flags |= oldflags & ~JFS_FL_USER_MODIFIABLE;
3365                 jfs_inode->mode2 = flags;
3366
3367 diff -NurpP --minimal linux-4.4.111/fs/jfs/jfs_dinode.h linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_dinode.h
3368 --- linux-4.4.111/fs/jfs/jfs_dinode.h   2015-04-12 22:12:50.000000000 +0000
3369 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_dinode.h 2018-01-09 16:36:32.000000000 +0000
3370 @@ -161,9 +161,13 @@ struct dinode {
3371
3372  #define JFS_APPEND_FL          0x01000000 /* writes to file may only append */
3373  #define JFS_IMMUTABLE_FL       0x02000000 /* Immutable file */
3374 +#define JFS_IXUNLINK_FL                0x08000000 /* Immutable invert on unlink */
3375
3376 -#define JFS_FL_USER_VISIBLE    0x03F80000
3377 -#define JFS_FL_USER_MODIFIABLE 0x03F80000
3378 +#define JFS_BARRIER_FL         0x04000000 /* Barrier for chroot() */
3379 +#define JFS_COW_FL             0x20000000 /* Copy on Write marker */
3380 +
3381 +#define JFS_FL_USER_VISIBLE    0x07F80000
3382 +#define JFS_FL_USER_MODIFIABLE 0x07F80000
3383  #define JFS_FL_INHERIT         0x03C80000
3384
3385  /* These are identical to EXT[23]_IOC_GETFLAGS/SETFLAGS */
3386 diff -NurpP --minimal linux-4.4.111/fs/jfs/jfs_filsys.h linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_filsys.h
3387 --- linux-4.4.111/fs/jfs/jfs_filsys.h   2015-04-12 22:12:50.000000000 +0000
3388 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_filsys.h 2018-01-09 16:36:32.000000000 +0000
3389 @@ -266,6 +266,7 @@
3390  #define JFS_NAME_MAX   255
3391  #define JFS_PATH_MAX   BPSIZE
3392
3393 +#define JFS_TAGGED             0x00800000      /* Context Tagging */
3394
3395  /*
3396   *     file system state (superblock state)
3397 diff -NurpP --minimal linux-4.4.111/fs/jfs/jfs_imap.c linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_imap.c
3398 --- linux-4.4.111/fs/jfs/jfs_imap.c     2015-04-12 22:12:50.000000000 +0000
3399 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_imap.c   2018-01-09 16:36:32.000000000 +0000
3400 @@ -46,6 +46,7 @@
3401  #include <linux/pagemap.h>
3402  #include <linux/quotaops.h>
3403  #include <linux/slab.h>
3404 +#include <linux/vs_tag.h>
3405
3406  #include "jfs_incore.h"
3407  #include "jfs_inode.h"
3408 @@ -3047,6 +3048,8 @@ static int copy_from_dinode(struct dinod
3409  {
3410         struct jfs_inode_info *jfs_ip = JFS_IP(ip);
3411         struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
3412 +       kuid_t kuid;
3413 +       kgid_t kgid;
3414
3415         jfs_ip->fileset = le32_to_cpu(dip->di_fileset);
3416         jfs_ip->mode2 = le32_to_cpu(dip->di_mode);
3417 @@ -3067,14 +3070,18 @@ static int copy_from_dinode(struct dinod
3418         }
3419         set_nlink(ip, le32_to_cpu(dip->di_nlink));
3420
3421 -       jfs_ip->saved_uid = make_kuid(&init_user_ns, le32_to_cpu(dip->di_uid));
3422 +       kuid = make_kuid(&init_user_ns, le32_to_cpu(dip->di_uid));
3423 +       kgid = make_kgid(&init_user_ns, le32_to_cpu(dip->di_gid));
3424 +       ip->i_tag = INOTAG_KTAG(DX_TAG(ip), kuid, kgid, GLOBAL_ROOT_TAG);
3425 +
3426 +       jfs_ip->saved_uid = INOTAG_KUID(DX_TAG(ip), kuid, kgid);
3427         if (!uid_valid(sbi->uid))
3428                 ip->i_uid = jfs_ip->saved_uid;
3429         else {
3430                 ip->i_uid = sbi->uid;
3431         }
3432
3433 -       jfs_ip->saved_gid = make_kgid(&init_user_ns, le32_to_cpu(dip->di_gid));
3434 +       jfs_ip->saved_gid = INOTAG_KGID(DX_TAG(ip), kuid, kgid);
3435         if (!gid_valid(sbi->gid))
3436                 ip->i_gid = jfs_ip->saved_gid;
3437         else {
3438 @@ -3139,16 +3146,14 @@ static void copy_to_dinode(struct dinode
3439         dip->di_size = cpu_to_le64(ip->i_size);
3440         dip->di_nblocks = cpu_to_le64(PBLK2LBLK(ip->i_sb, ip->i_blocks));
3441         dip->di_nlink = cpu_to_le32(ip->i_nlink);
3442 -       if (!uid_valid(sbi->uid))
3443 -               dip->di_uid = cpu_to_le32(i_uid_read(ip));
3444 -       else
3445 -               dip->di_uid =cpu_to_le32(from_kuid(&init_user_ns,
3446 -                                                  jfs_ip->saved_uid));
3447 -       if (!gid_valid(sbi->gid))
3448 -               dip->di_gid = cpu_to_le32(i_gid_read(ip));
3449 -       else
3450 -               dip->di_gid = cpu_to_le32(from_kgid(&init_user_ns,
3451 -                                                   jfs_ip->saved_gid));
3452 +       dip->di_uid = cpu_to_le32(from_kuid(&init_user_ns,
3453 +               TAGINO_KUID(DX_TAG(ip),
3454 +               !uid_valid(sbi->uid) ? ip->i_uid : jfs_ip->saved_uid,
3455 +               ip->i_tag)));
3456 +       dip->di_gid = cpu_to_le32(from_kgid(&init_user_ns,
3457 +               TAGINO_KGID(DX_TAG(ip),
3458 +               !gid_valid(sbi->gid) ? ip->i_gid : jfs_ip->saved_gid,
3459 +               ip->i_tag)));
3460         jfs_get_inode_flags(jfs_ip);
3461         /*
3462          * mode2 is only needed for storing the higher order bits.
3463 diff -NurpP --minimal linux-4.4.111/fs/jfs/jfs_inode.c linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_inode.c
3464 --- linux-4.4.111/fs/jfs/jfs_inode.c    2016-07-05 04:12:33.000000000 +0000
3465 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_inode.c  2018-01-14 06:39:51.000000000 +0000
3466 @@ -18,6 +18,7 @@
3467
3468  #include <linux/fs.h>
3469  #include <linux/quotaops.h>
3470 +#include <linux/vs_tag.h>
3471  #include "jfs_incore.h"
3472  #include "jfs_inode.h"
3473  #include "jfs_filsys.h"
3474 @@ -33,6 +34,9 @@ void jfs_set_inode_flags(struct inode *i
3475
3476         if (flags & JFS_IMMUTABLE_FL)
3477                 new_fl |= S_IMMUTABLE;
3478 +       if (flags & JFS_IXUNLINK_FL)
3479 +               new_fl |= S_IXUNLINK;
3480 +
3481         if (flags & JFS_APPEND_FL)
3482                 new_fl |= S_APPEND;
3483         if (flags & JFS_NOATIME_FL)
3484 @@ -41,18 +45,35 @@ void jfs_set_inode_flags(struct inode *i
3485                 new_fl |= S_DIRSYNC;
3486         if (flags & JFS_SYNC_FL)
3487                 new_fl |= S_SYNC;
3488 -       inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME |
3489 -                       S_DIRSYNC | S_SYNC);
3490 +
3491 +       inode_set_flags(inode, new_fl, S_IMMUTABLE | S_IXUNLINK |
3492 +                       S_APPEND | S_NOATIME | S_DIRSYNC | S_SYNC);
3493 +
3494 +       new_fl = 0;
3495 +       if (flags & JFS_BARRIER_FL)
3496 +               new_fl |= V_BARRIER;
3497 +       if (flags & JFS_COW_FL)
3498 +               new_fl |= V_COW;
3499 +
3500 +       set_mask_bits(&inode->i_vflags,
3501 +               V_BARRIER | V_COW, new_fl);
3502  }
3503
3504  void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
3505  {
3506         unsigned int flags = jfs_ip->vfs_inode.i_flags;
3507 +       unsigned int vflags = jfs_ip->vfs_inode.i_vflags;
3508 +
3509 +       jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_IXUNLINK_FL |
3510 +                          JFS_APPEND_FL | JFS_NOATIME_FL |
3511 +                          JFS_DIRSYNC_FL | JFS_SYNC_FL |
3512 +                          JFS_BARRIER_FL | JFS_COW_FL);
3513
3514 -       jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
3515 -                          JFS_DIRSYNC_FL | JFS_SYNC_FL);
3516         if (flags & S_IMMUTABLE)
3517                 jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
3518 +       if (flags & S_IXUNLINK)
3519 +               jfs_ip->mode2 |= JFS_IXUNLINK_FL;
3520 +
3521         if (flags & S_APPEND)
3522                 jfs_ip->mode2 |= JFS_APPEND_FL;
3523         if (flags & S_NOATIME)
3524 @@ -61,6 +82,11 @@ void jfs_get_inode_flags(struct jfs_inod
3525                 jfs_ip->mode2 |= JFS_DIRSYNC_FL;
3526         if (flags & S_SYNC)
3527                 jfs_ip->mode2 |= JFS_SYNC_FL;
3528 +
3529 +       if (vflags & V_BARRIER)
3530 +               jfs_ip->mode2 |= JFS_BARRIER_FL;
3531 +       if (vflags & V_COW)
3532 +               jfs_ip->mode2 |= JFS_COW_FL;
3533  }
3534
3535  /*
3536 diff -NurpP --minimal linux-4.4.111/fs/jfs/jfs_inode.h linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_inode.h
3537 --- linux-4.4.111/fs/jfs/jfs_inode.h    2015-04-12 22:12:50.000000000 +0000
3538 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/jfs_inode.h  2018-01-09 16:36:32.000000000 +0000
3539 @@ -39,6 +39,7 @@ extern struct dentry *jfs_fh_to_dentry(s
3540  extern struct dentry *jfs_fh_to_parent(struct super_block *sb, struct fid *fid,
3541         int fh_len, int fh_type);
3542  extern void jfs_set_inode_flags(struct inode *);
3543 +extern int jfs_sync_flags(struct inode *, int, int);
3544  extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
3545  extern int jfs_setattr(struct dentry *, struct iattr *);
3546
3547 diff -NurpP --minimal linux-4.4.111/fs/jfs/namei.c linux-4.4.111-vs2.3.9.5/fs/jfs/namei.c
3548 --- linux-4.4.111/fs/jfs/namei.c        2016-07-05 04:15:08.000000000 +0000
3549 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/namei.c      2018-01-09 16:36:32.000000000 +0000
3550 @@ -22,6 +22,7 @@
3551  #include <linux/ctype.h>
3552  #include <linux/quotaops.h>
3553  #include <linux/exportfs.h>
3554 +#include <linux/vs_tag.h>
3555  #include "jfs_incore.h"
3556  #include "jfs_superblock.h"
3557  #include "jfs_inode.h"
3558 @@ -1480,6 +1481,7 @@ static struct dentry *jfs_lookup(struct
3559                         jfs_err("jfs_lookup: iget failed on inum %d", (uint)inum);
3560         }
3561
3562 +       dx_propagate_tag(nd, ip);
3563         return d_splice_alias(ip, dentry);
3564  }
3565
3566 @@ -1545,6 +1547,7 @@ const struct inode_operations jfs_dir_in
3567         .get_acl        = jfs_get_acl,
3568         .set_acl        = jfs_set_acl,
3569  #endif
3570 +       .sync_flags     = jfs_sync_flags,
3571  };
3572
3573  const struct file_operations jfs_dir_operations = {
3574 diff -NurpP --minimal linux-4.4.111/fs/jfs/super.c linux-4.4.111-vs2.3.9.5/fs/jfs/super.c
3575 --- linux-4.4.111/fs/jfs/super.c        2018-01-11 07:57:45.000000000 +0000
3576 +++ linux-4.4.111-vs2.3.9.5/fs/jfs/super.c      2018-01-09 16:36:32.000000000 +0000
3577 @@ -206,7 +206,8 @@ enum {
3578         Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
3579         Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota,
3580         Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask,
3581 -       Opt_discard, Opt_nodiscard, Opt_discard_minblk
3582 +       Opt_discard, Opt_nodiscard, Opt_discard_minblk,
3583 +       Opt_tag, Opt_notag, Opt_tagid
3584  };
3585
3586  static const match_table_t tokens = {
3587 @@ -216,6 +217,10 @@ static const match_table_t tokens = {
3588         {Opt_resize, "resize=%u"},
3589         {Opt_resize_nosize, "resize"},
3590         {Opt_errors, "errors=%s"},
3591 +       {Opt_tag, "tag"},
3592 +       {Opt_notag, "notag"},
3593 +       {Opt_tagid, "tagid=%u"},
3594 +       {Opt_tag, "tagxid"},
3595         {Opt_ignore, "noquota"},
3596         {Opt_ignore, "quota"},
3597         {Opt_usrquota, "usrquota"},
3598 @@ -405,7 +410,20 @@ static int parse_options(char *options,
3599                                 pr_err("JFS: discard option not supported on device\n");
3600                         break;
3601                 }
3602 -
3603 +#ifndef CONFIG_TAGGING_NONE
3604 +               case Opt_tag:
3605 +                       *flag |= JFS_TAGGED;
3606 +                       break;
3607 +               case Opt_notag:
3608 +                       *flag &= JFS_TAGGED;
3609 +                       break;
3610 +#endif
3611 +#ifdef CONFIG_PROPAGATE
3612 +               case Opt_tagid:
3613 +                       /* use args[0] */
3614 +                       *flag |= JFS_TAGGED;
3615 +                       break;
3616 +#endif
3617                 default:
3618                         printk("jfs: Unrecognized mount option \"%s\" or missing value\n",
3619                                p);
3620 @@ -437,6 +455,12 @@ static int jfs_remount(struct super_bloc
3621         if (!parse_options(data, sb, &newLVSize, &flag))
3622                 return -EINVAL;
3623
3624 +       if ((flag & JFS_TAGGED) && !(sb->s_flags & MS_TAGGED)) {
3625 +               printk(KERN_ERR "JFS: %s: tagging not permitted on remount.\n",
3626 +                       sb->s_id);
3627 +               return -EINVAL;
3628 +       }
3629 +
3630         if (newLVSize) {
3631                 if (sb->s_flags & MS_RDONLY) {
3632                         pr_err("JFS: resize requires volume to be mounted read-write\n");
3633 @@ -517,6 +541,9 @@ static int jfs_fill_super(struct super_b
3634  #ifdef CONFIG_JFS_POSIX_ACL
3635         sb->s_flags |= MS_POSIXACL;
3636  #endif
3637 +       /* map mount option tagxid */
3638 +       if (sbi->flag & JFS_TAGGED)
3639 +               sb->s_flags |= MS_TAGGED;
3640
3641         if (newLVSize) {
3642                 pr_err("resize option for remount only\n");
3643 diff -NurpP --minimal linux-4.4.111/fs/libfs.c linux-4.4.111-vs2.3.9.5/fs/libfs.c
3644 --- linux-4.4.111/fs/libfs.c    2016-07-05 04:12:33.000000000 +0000
3645 +++ linux-4.4.111-vs2.3.9.5/fs/libfs.c  2018-01-09 16:36:32.000000000 +0000
3646 @@ -141,13 +141,14 @@ static inline unsigned char dt_type(stru
3647   * both impossible due to the lock on directory.
3648   */
3649
3650 -int dcache_readdir(struct file *file, struct dir_context *ctx)
3651 +static inline int do_dcache_readdir_filter(struct file *filp,
3652 +       struct dir_context *ctx, int (*filter)(struct dentry *dentry))
3653  {
3654 -       struct dentry *dentry = file->f_path.dentry;
3655 -       struct dentry *cursor = file->private_data;
3656 +       struct dentry *dentry = filp->f_path.dentry;
3657 +       struct dentry *cursor = filp->private_data;
3658         struct list_head *p, *q = &cursor->d_child;
3659
3660 -       if (!dir_emit_dots(file, ctx))
3661 +       if (!dir_emit_dots(filp, ctx))
3662                 return 0;
3663         spin_lock(&dentry->d_lock);
3664         if (ctx->pos == 2)
3665 @@ -155,6 +156,8 @@ int dcache_readdir(struct file *file, st
3666
3667         for (p = q->next; p != &dentry->d_subdirs; p = p->next) {
3668                 struct dentry *next = list_entry(p, struct dentry, d_child);
3669 +               if (filter && !filter(next))
3670 +                       continue;
3671                 spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
3672                 if (!simple_positive(next)) {
3673                         spin_unlock(&next->d_lock);
3674 @@ -177,8 +180,22 @@ int dcache_readdir(struct file *file, st
3675         spin_unlock(&dentry->d_lock);
3676         return 0;
3677  }
3678 +
3679  EXPORT_SYMBOL(dcache_readdir);
3680
3681 +int dcache_readdir(struct file *filp, struct dir_context *ctx)
3682 +{
3683 +       return do_dcache_readdir_filter(filp, ctx, NULL);
3684 +}
3685 +
3686 +EXPORT_SYMBOL(dcache_readdir_filter);
3687 +
3688 +int dcache_readdir_filter(struct file *filp, struct dir_context *ctx,
3689 +       int (*filter)(struct dentry *))
3690 +{
3691 +       return do_dcache_readdir_filter(filp, ctx, filter);
3692 +}
3693 +
3694  ssize_t generic_read_dir(struct file *filp, char __user *buf, size_t siz, loff_t *ppos)
3695  {
3696         return -EISDIR;
3697 diff -NurpP --minimal linux-4.4.111/fs/locks.c linux-4.4.111-vs2.3.9.5/fs/locks.c
3698 --- linux-4.4.111/fs/locks.c    2018-01-11 07:57:45.000000000 +0000
3699 +++ linux-4.4.111-vs2.3.9.5/fs/locks.c  2018-01-09 16:36:32.000000000 +0000
3700 @@ -129,6 +129,8 @@
3701  #include <linux/hashtable.h>
3702  #include <linux/percpu.h>
3703  #include <linux/lglock.h>
3704 +#include <linux/vs_base.h>
3705 +#include <linux/vs_limit.h>
3706
3707  #define CREATE_TRACE_POINTS
3708  #include <trace/events/filelock.h>
3709 @@ -255,11 +257,15 @@ static void locks_init_lock_heads(struct
3710  /* Allocate an empty lock structure. */
3711  struct file_lock *locks_alloc_lock(void)
3712  {
3713 -       struct file_lock *fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
3714 +       struct file_lock *fl;
3715
3716 -       if (fl)
3717 -               locks_init_lock_heads(fl);
3718 +       fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
3719
3720 +       if (fl) {
3721 +               locks_init_lock_heads(fl);
3722 +               vx_locks_inc(fl);
3723 +               fl->fl_xid = -1;
3724 +       }
3725         return fl;
3726  }
3727  EXPORT_SYMBOL_GPL(locks_alloc_lock);
3728 @@ -311,6 +317,7 @@ void locks_init_lock(struct file_lock *f
3729  {
3730         memset(fl, 0, sizeof(struct file_lock));
3731         locks_init_lock_heads(fl);
3732 +       fl->fl_xid = -1;
3733  }
3734
3735  EXPORT_SYMBOL(locks_init_lock);
3736 @@ -328,6 +335,7 @@ void locks_copy_conflock(struct file_loc
3737         new->fl_start = fl->fl_start;
3738         new->fl_end = fl->fl_end;
3739         new->fl_lmops = fl->fl_lmops;
3740 +       new->fl_xid = fl->fl_xid;
3741         new->fl_ops = NULL;
3742
3743         if (fl->fl_lmops) {
3744 @@ -389,7 +397,10 @@ flock_make_lock(struct file *filp, unsig
3745         fl->fl_flags = FL_FLOCK;
3746         fl->fl_type = type;
3747         fl->fl_end = OFFSET_MAX;
3748 -
3749 +
3750 +       vxd_assert(filp->f_xid == vx_current_xid(),
3751 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3752 +       fl->fl_xid = filp->f_xid;
3753         return fl;
3754  }
3755
3756 @@ -511,6 +522,7 @@ static int lease_init(struct file *filp,
3757
3758         fl->fl_owner = filp;
3759         fl->fl_pid = current->tgid;
3760 +       fl->fl_xid = vx_current_xid();
3761
3762         fl->fl_file = filp;
3763         fl->fl_flags = FL_LEASE;
3764 @@ -530,6 +542,10 @@ static struct file_lock *lease_alloc(str
3765         if (fl == NULL)
3766                 return ERR_PTR(error);
3767
3768 +       fl->fl_xid = vx_current_xid();
3769 +       if (filp)
3770 +               vxd_assert(filp->f_xid == fl->fl_xid,
3771 +                       "f_xid(%d) == fl_xid(%d)", filp->f_xid, fl->fl_xid);
3772         error = lease_init(filp, type, fl);
3773         if (error) {
3774                 locks_free_lock(fl);
3775 @@ -908,6 +924,7 @@ static int flock_lock_inode(struct inode
3776                 goto out;
3777         }
3778
3779 +       new_fl->fl_xid = -1;
3780  find_conflict:
3781         list_for_each_entry(fl, &ctx->flc_flock, fl_list) {
3782                 if (!flock_locks_conflict(request, fl))
3783 @@ -934,7 +951,8 @@ out:
3784         return error;
3785  }
3786
3787 -static int __posix_lock_file(struct inode *inode, struct file_lock *request, struct file_lock *conflock)
3788 +static int __posix_lock_file(struct inode *inode, struct file_lock *request,
3789 +       struct file_lock *conflock, vxid_t xid)
3790  {
3791         struct file_lock *fl, *tmp;
3792         struct file_lock *new_fl = NULL;
3793 @@ -950,6 +968,9 @@ static int __posix_lock_file(struct inod
3794         if (!ctx)
3795                 return (request->fl_type == F_UNLCK) ? 0 : -ENOMEM;
3796
3797 +       if (xid)
3798 +               vxd_assert(xid == vx_current_xid(),
3799 +                       "xid(%d) == current(%d)", xid, vx_current_xid());
3800         /*
3801          * We may need two file_lock structures for this operation,
3802          * so we get them in advance to avoid races.
3803 @@ -960,7 +981,11 @@ static int __posix_lock_file(struct inod
3804             (request->fl_type != F_UNLCK ||
3805              request->fl_start != 0 || request->fl_end != OFFSET_MAX)) {
3806                 new_fl = locks_alloc_lock();
3807 +               new_fl->fl_xid = xid;
3808 +               // vx_locks_inc(new_fl);
3809                 new_fl2 = locks_alloc_lock();
3810 +               new_fl2->fl_xid = xid;
3811 +               // vx_locks_inc(new_fl2);
3812         }
3813
3814         spin_lock(&ctx->flc_lock);
3815 @@ -1162,7 +1187,8 @@ static int __posix_lock_file(struct inod
3816  int posix_lock_file(struct file *filp, struct file_lock *fl,
3817                         struct file_lock *conflock)
3818  {
3819 -       return __posix_lock_file(file_inode(filp), fl, conflock);
3820 +       return __posix_lock_file(file_inode(filp),
3821 +               fl, conflock, filp->f_xid);
3822  }
3823  EXPORT_SYMBOL(posix_lock_file);
3824
3825 @@ -1178,7 +1204,7 @@ static int posix_lock_inode_wait(struct
3826         int error;
3827         might_sleep ();
3828         for (;;) {
3829 -               error = __posix_lock_file(inode, fl, NULL);
3830 +               error = __posix_lock_file(inode, fl, NULL, 0);
3831                 if (error != FILE_LOCK_DEFERRED)
3832                         break;
3833                 error = wait_event_interruptible(fl->fl_wait, !fl->fl_next);
3834 @@ -1257,10 +1283,13 @@ int locks_mandatory_area(int read_write,
3835         fl.fl_end = offset + count - 1;
3836
3837         for (;;) {
3838 +               vxid_t f_xid = 0;
3839 +
3840                 if (filp) {
3841                         fl.fl_owner = filp;
3842                         fl.fl_flags &= ~FL_SLEEP;
3843 -                       error = __posix_lock_file(inode, &fl, NULL);
3844 +                       f_xid = filp->f_xid;
3845 +                       error = __posix_lock_file(inode, &fl, NULL, f_xid);
3846                         if (!error)
3847                                 break;
3848                 }
3849 @@ -1268,7 +1297,7 @@ int locks_mandatory_area(int read_write,
3850                 if (sleep)
3851                         fl.fl_flags |= FL_SLEEP;
3852                 fl.fl_owner = current->files;
3853 -               error = __posix_lock_file(inode, &fl, NULL);
3854 +               error = __posix_lock_file(inode, &fl, NULL, f_xid);
3855                 if (error != FILE_LOCK_DEFERRED)
3856                         break;
3857                 error = wait_event_interruptible(fl.fl_wait, !fl.fl_next);
3858 @@ -2165,6 +2194,11 @@ int fcntl_setlk(unsigned int fd, struct
3859         if (file_lock == NULL)
3860                 return -ENOLCK;
3861
3862 +       vxd_assert(filp->f_xid == vx_current_xid(),
3863 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3864 +       file_lock->fl_xid = filp->f_xid;
3865 +       // vx_locks_inc(file_lock);
3866 +
3867         /*
3868          * This might block, so we do it before checking the inode.
3869          */
3870 @@ -2307,6 +2341,11 @@ int fcntl_setlk64(unsigned int fd, struc
3871         if (file_lock == NULL)
3872                 return -ENOLCK;
3873
3874 +       vxd_assert(filp->f_xid == vx_current_xid(),
3875 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3876 +       file_lock->fl_xid = filp->f_xid;
3877 +       // vx_locks_inc(file_lock);
3878 +
3879         /*
3880          * This might block, so we do it before checking the inode.
3881          */
3882 @@ -2620,8 +2659,11 @@ static int locks_show(struct seq_file *f
3883
3884         lock_get_status(f, fl, iter->li_pos, "");
3885
3886 -       list_for_each_entry(bfl, &fl->fl_block, fl_block)
3887 +       list_for_each_entry(bfl, &fl->fl_block, fl_block) {
3888 +               if (!vx_check(fl->fl_xid, VS_WATCH_P | VS_IDENT))
3889 +                       continue;
3890                 lock_get_status(f, bfl, iter->li_pos, " ->");
3891 +       }
3892
3893         return 0;
3894  }
3895 diff -NurpP --minimal linux-4.4.111/fs/mount.h linux-4.4.111-vs2.3.9.5/fs/mount.h
3896 --- linux-4.4.111/fs/mount.h    2018-01-11 07:57:45.000000000 +0000
3897 +++ linux-4.4.111-vs2.3.9.5/fs/mount.h  2018-01-09 16:36:32.000000000 +0000
3898 @@ -68,6 +68,7 @@ struct mount {
3899         struct hlist_head mnt_pins;
3900         struct fs_pin mnt_umount;
3901         struct dentry *mnt_ex_mountpoint;
3902 +       vtag_t mnt_tag;                 /* tagging used for vfsmount */
3903  };
3904
3905  #define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */
3906 diff -NurpP --minimal linux-4.4.111/fs/namei.c linux-4.4.111-vs2.3.9.5/fs/namei.c
3907 --- linux-4.4.111/fs/namei.c    2018-01-11 07:57:45.000000000 +0000
3908 +++ linux-4.4.111-vs2.3.9.5/fs/namei.c  2018-01-13 03:11:55.000000000 +0000
3909 @@ -34,10 +34,20 @@
3910  #include <linux/device_cgroup.h>
3911  #include <linux/fs_struct.h>
3912  #include <linux/posix_acl.h>
3913 +#include <linux/proc_fs.h>
3914 +#include <linux/magic.h>
3915 +#include <linux/vserver/inode.h>
3916 +#include <linux/vs_base.h>
3917 +#include <linux/vs_tag.h>
3918 +#include <linux/vs_cowbl.h>
3919 +#include <linux/vs_device.h>
3920 +#include <linux/vs_context.h>
3921 +#include <linux/pid_namespace.h>
3922  #include <linux/hash.h>
3923  #include <asm/uaccess.h>
3924
3925  #include "internal.h"
3926 +#include "proc/internal.h"
3927  #include "mount.h"
3928
3929  /* [Feb-1997 T. Schoebel-Theuer]
3930 @@ -283,6 +293,93 @@ static int check_acl(struct inode *inode
3931         return -EAGAIN;
3932  }
3933
3934 +static inline int dx_barrier(const struct inode *inode)
3935 +{
3936 +       if (IS_BARRIER(inode) && !vx_check(0, VS_ADMIN | VS_WATCH)) {
3937 +               vxwprintk_task(1, "did hit the barrier.");
3938 +               return 1;
3939 +       }
3940 +       return 0;
3941 +}
3942 +
3943 +static int __dx_permission(const struct inode *inode, int mask)
3944 +{
3945 +       if (dx_barrier(inode))
3946 +               return -EACCES;
3947 +
3948 +       if (inode->i_sb->s_magic == DEVPTS_SUPER_MAGIC) {
3949 +               /* devpts is xid tagged */
3950 +               if (S_ISDIR(inode->i_mode) ||
3951 +                   vx_check((vxid_t)i_tag_read(inode), VS_IDENT | VS_WATCH_P))
3952 +                       return 0;
3953 +
3954 +               /* just pretend we didn't find anything */
3955 +               return -ENOENT;
3956 +       }
3957 +       else if (inode->i_sb->s_magic == PROC_SUPER_MAGIC) {
3958 +               struct proc_dir_entry *de = PDE(inode);
3959 +
3960 +               if (de && !vx_hide_check(0, de->vx_flags)) {
3961 +                       vxdprintk(VXD_CBIT(misc, 9),
3962 +                               VS_Q("%*s") " hidden by _dx_permission",
3963 +                               de->namelen, de->name);
3964 +                       goto out;
3965 +               }
3966 +
3967 +               if ((mask & (MAY_WRITE | MAY_APPEND))) {
3968 +                       struct pid *pid;
3969 +                       struct task_struct *tsk;
3970 +
3971 +                       if (vx_check(0, VS_ADMIN | VS_WATCH_P) ||
3972 +                           vx_flags(VXF_STATE_SETUP, 0))
3973 +                               return 0;
3974 +
3975 +                       pid = PROC_I(inode)->pid;
3976 +                       if (!pid)
3977 +                               goto out;
3978 +
3979 +                       rcu_read_lock();
3980 +                       tsk = pid_task(pid, PIDTYPE_PID);
3981 +                       vxdprintk(VXD_CBIT(tag, 0), "accessing %p[#%u]",
3982 +                                 tsk, (tsk ? vx_task_xid(tsk) : 0));
3983 +                       if (tsk &&
3984 +                               vx_check(vx_task_xid(tsk), VS_IDENT | VS_WATCH_P)) {
3985 +                               rcu_read_unlock();
3986 +                               return 0;
3987 +                       }
3988 +                       rcu_read_unlock();
3989 +               }
3990 +               else {
3991 +                       /* FIXME: Should we block some entries here? */
3992 +                       return 0;
3993 +               }
3994 +       }
3995 +       else {
3996 +               if (dx_notagcheck(inode->i_sb) ||
3997 +                   dx_check((vxid_t)i_tag_read(inode),
3998 +                       DX_HOSTID | DX_ADMIN | DX_WATCH | DX_IDENT))
3999 +                       return 0;
4000 +       }
4001 +
4002 +out:
4003 +       return -EACCES;
4004 +}
4005 +
4006 +int dx_permission(const struct inode *inode, int mask)
4007 +{
4008 +       int ret = __dx_permission(inode, mask);
4009 +       if (unlikely(ret)) {
4010 +#ifndef        CONFIG_VSERVER_WARN_DEVPTS
4011 +               if (inode->i_sb->s_magic != DEVPTS_SUPER_MAGIC)
4012 +#endif
4013 +                   vxwprintk_task(1,
4014 +                       "denied [0x%x] access to inode %s:%p[#%d,%lu]",
4015 +                       mask, inode->i_sb->s_id, inode,
4016 +                       i_tag_read(inode), inode->i_ino);
4017 +       }
4018 +       return ret;
4019 +}
4020 +
4021  /*
4022   * This does the basic permission checking
4023   */
4024 @@ -407,10 +504,14 @@ int __inode_permission(struct inode *ino
4025                 /*
4026                  * Nobody gets write access to an immutable file.
4027                  */
4028 -               if (IS_IMMUTABLE(inode))
4029 +               if (IS_IMMUTABLE(inode) && !IS_COW(inode))
4030                         return -EACCES;
4031         }
4032
4033 +       retval = dx_permission(inode, mask);
4034 +       if (retval)
4035 +               return retval;
4036 +
4037         retval = do_inode_permission(inode, mask);
4038         if (retval)
4039                 return retval;
4040 @@ -1583,6 +1684,9 @@ static int lookup_fast(struct nameidata
4041                  */
4042                 if (negative)
4043                         return -ENOENT;
4044 +
4045 +               /* FIXME: check dx permission */
4046 +
4047                 path->mnt = mnt;
4048                 path->dentry = dentry;
4049                 if (likely(__follow_mount_rcu(nd, path, inode, seqp)))
4050 @@ -1613,6 +1717,8 @@ unlazy:
4051                 dput(dentry);
4052                 return -ENOENT;
4053         }
4054 +
4055 +       /* FIXME: check dx permission */
4056         path->mnt = mnt;
4057         path->dentry = dentry;
4058         err = follow_managed(path, nd);
4059 @@ -2571,7 +2677,7 @@ static int may_delete(struct inode *dir,
4060                 return -EPERM;
4061
4062         if (check_sticky(dir, inode) || IS_APPEND(inode) ||
4063 -           IS_IMMUTABLE(inode) || IS_SWAPFILE(inode))
4064 +               IS_IXORUNLINK(inode) || IS_SWAPFILE(inode))
4065                 return -EPERM;
4066         if (isdir) {
4067                 if (!d_is_dir(victim))
4068 @@ -2653,19 +2759,25 @@ int vfs_create(struct inode *dir, struct
4069                 bool want_excl)
4070  {
4071         int error = may_create(dir, dentry);
4072 -       if (error)
4073 +       if (error) {
4074 +               vxdprintk(VXD_CBIT(misc, 3), "may_create failed with %d", error);
4075                 return error;
4076 +       }
4077
4078         if (!dir->i_op->create)
4079                 return -EACCES; /* shouldn't it be ENOSYS? */
4080         mode &= S_IALLUGO;
4081         mode |= S_IFREG;
4082         error = security_inode_create(dir, dentry, mode);
4083 -       if (error)
4084 +       if (error) {
4085 +               vxdprintk(VXD_CBIT(misc, 3), "security_inode_create failed with %d", error);
4086                 return error;
4087 +       }
4088         error = dir->i_op->create(dir, dentry, mode, want_excl);
4089         if (!error)
4090                 fsnotify_create(dir, dentry);
4091 +       else
4092 +               vxdprintk(VXD_CBIT(misc, 3), "i_op->create failed with %d", error);
4093         return error;
4094  }
4095  EXPORT_SYMBOL(vfs_create);
4096 @@ -2701,6 +2813,15 @@ static int may_open(struct path *path, i
4097                 break;
4098         }
4099
4100 +#ifdef CONFIG_VSERVER_COWBL
4101 +       if (IS_COW(inode) &&
4102 +               ((flag & O_ACCMODE) != O_RDONLY)) {
4103 +               if (IS_COW_LINK(inode))
4104 +                       return -EMLINK;
4105 +               inode->i_flags &= ~(S_IXUNLINK|S_IMMUTABLE);
4106 +               mark_inode_dirty(inode);
4107 +       }
4108 +#endif
4109         error = inode_permission(inode, acc_mode);
4110         if (error)
4111                 return error;
4112 @@ -3178,6 +3299,16 @@ finish_open:
4113         }
4114  finish_open_created:
4115         error = may_open(&nd->path, acc_mode, open_flag);
4116 +#ifdef CONFIG_VSERVER_COWBL
4117 +       if (error == -EMLINK) {
4118 +               struct dentry *dentry;
4119 +               dentry = cow_break_link(nd->name->name);
4120 +               if (IS_ERR(dentry))
4121 +                       error = PTR_ERR(dentry);
4122 +               else
4123 +                       dput(dentry);
4124 +       }
4125 +#endif
4126         if (error)
4127                 goto out;
4128
4129 @@ -3302,6 +3433,9 @@ static struct file *path_openat(struct n
4130         int opened = 0;
4131         int error;
4132
4133 +#ifdef CONFIG_VSERVER_COWBL
4134 +restart:
4135 +#endif
4136         file = get_empty_filp();
4137         if (IS_ERR(file))
4138                 return file;
4139 @@ -3328,6 +3462,12 @@ static struct file *path_openat(struct n
4140                 }
4141         }
4142         terminate_walk(nd);
4143 +#ifdef CONFIG_VSERVER_COWBL
4144 +       if (error == -EMLINK) {
4145 +               // path_cleanup(nd);
4146 +               goto restart;
4147 +       }
4148 +#endif
4149  out2:
4150         if (!(opened & FILE_OPENED)) {
4151                 BUG_ON(!error);
4152 @@ -3448,6 +3588,11 @@ static struct dentry *filename_create(in
4153                 goto fail;
4154         }
4155         putname(name);
4156 +       vxdprintk(VXD_CBIT(misc, 3), "filename_create path.dentry = %p (%.*s), dentry = %p (%.*s), d_inode = %p",
4157 +               path->dentry, path->dentry->d_name.len,
4158 +               path->dentry->d_name.name, dentry,
4159 +               dentry->d_name.len, dentry->d_name.name,
4160 +               path->dentry->d_inode);
4161         return dentry;
4162  fail:
4163         dput(dentry);
4164 @@ -3564,6 +3709,7 @@ retry:
4165                         error = vfs_mknod(path.dentry->d_inode,dentry,mode,0);
4166                         break;
4167         }
4168 +
4169  out:
4170         done_path_create(&path, dentry);
4171         if (retry_estale(error, lookup_flags)) {
4172 @@ -4010,7 +4156,7 @@ int vfs_link(struct dentry *old_dentry,
4173         /*
4174          * A link to an append-only or immutable file cannot be created.
4175          */
4176 -       if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
4177 +       if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
4178                 return -EPERM;
4179         if (!dir->i_op->link)
4180                 return -EPERM;
4181 @@ -4519,6 +4665,330 @@ int generic_readlink(struct dentry *dent
4182  }
4183  EXPORT_SYMBOL(generic_readlink);
4184
4185 +
4186 +#ifdef CONFIG_VSERVER_COWBL
4187 +
4188 +static inline
4189 +void dump_path(const char *name, struct path *path)
4190 +{
4191 +       vxdprintk(VXD_CBIT(misc, 3),
4192 +               "%s: path=%p mnt=%p dentry=%p", name, path,
4193 +               path ? path->mnt : NULL,
4194 +               path ? path->dentry : NULL);
4195 +
4196 +       if (path && path->mnt)
4197 +               vxdprintk(VXD_CBIT(misc, 3),
4198 +               "%s: path mnt_sb=%p[#%d,#%d] mnt_root=%p[#%d]", name,
4199 +               path->mnt->mnt_sb,
4200 +               path->mnt->mnt_sb ? path->mnt->mnt_sb->s_count : -1,
4201 +               path->mnt->mnt_sb ? atomic_read(&path->mnt->mnt_sb->s_active) : -1,
4202 +               path->mnt->mnt_root,
4203 +               path->mnt->mnt_root ? path->mnt->mnt_root->d_lockref.count : -1);
4204 +
4205 +       if (path && path->dentry)
4206 +               vxdprintk(VXD_CBIT(misc, 3),
4207 +               "%s: path dentry=%p[#%d]", name,
4208 +               path->dentry,
4209 +               path->dentry ? path->dentry->d_lockref.count : -1);
4210 +}
4211 +
4212 +static inline
4213 +long do_cow_splice(struct file *in, struct file *out, size_t len)
4214 +{
4215 +       loff_t ppos = 0;
4216 +       loff_t opos = 0;
4217 +
4218 +       return do_splice_direct(in, &ppos, out, &opos, len, 0);
4219 +}
4220 +
4221 +struct dentry *cow_break_link(const char *pathname)
4222 +{
4223 +       int ret, mode, pathlen, redo = 0, drop = 1;
4224 +       struct path old_path = {}, par_path = {}, dir_path = {}, *new_path = NULL;
4225 +       struct dentry *dir, *old_dentry, *new_dentry = NULL;
4226 +       struct file *old_file;
4227 +       struct file *new_file;
4228 +       struct qstr new_qstr;
4229 +       int new_type;
4230 +       char *to, *path, pad='\251';
4231 +       loff_t size;
4232 +       struct filename *filename = getname_kernel(pathname);
4233 +       struct filename *to_filename;
4234 +
4235 +       vxdprintk(VXD_CBIT(misc, 1),
4236 +               "cow_break_link(" VS_Q("%s") ")", pathname);
4237 +
4238 +       path = kmalloc(PATH_MAX, GFP_KERNEL);
4239 +       ret = -ENOMEM;
4240 +       if (!path || IS_ERR(filename))
4241 +               goto out;
4242 +
4243 +       /* old_path will have refs to dentry and mnt */
4244 +       ret = filename_lookup(AT_FDCWD, filename, LOOKUP_FOLLOW, &old_path, NULL);
4245 +       vxdprintk(VXD_CBIT(misc, 2),
4246 +               "do_path_lookup(old): %d", ret);
4247 +       if (ret < 0)
4248 +               goto out_free_path;
4249 +
4250 +       dump_path("cow (old)", &old_path);
4251 +
4252 +       /* no explicit reference for old_dentry here */
4253 +       old_dentry = old_path.dentry;
4254 +
4255 +       /* speculative put */
4256 +       // dput(old_dentry);
4257 +
4258 +       mode = old_dentry->d_inode->i_mode;
4259 +       to = d_path(&old_path, path, PATH_MAX-2);
4260 +       pathlen = strlen(to);
4261 +       vxdprintk(VXD_CBIT(misc, 2),
4262 +               "old path " VS_Q("%s") " [%p:" VS_Q("%.*s") ":%d]", to,
4263 +               old_dentry,
4264 +               old_dentry->d_name.len, old_dentry->d_name.name,
4265 +               old_dentry->d_name.len);
4266 +
4267 +       to[pathlen + 1] = 0;
4268 +retry:
4269 +       new_dentry = NULL;
4270 +       to[pathlen] = pad--;
4271 +       ret = -ELOOP;
4272 +       if (pad <= '\240')
4273 +               goto out_rel_old;
4274 +
4275 +       vxdprintk(VXD_CBIT(misc, 1), "temp copy " VS_Q("%s"), to);
4276 +
4277 +       /* dir_path will have refs to dentry and mnt */
4278 +       to_filename = getname_kernel(to);
4279 +       to_filename = filename_parentat(AT_FDCWD, to_filename,
4280 +               LOOKUP_PARENT | LOOKUP_OPEN | LOOKUP_CREATE, &par_path, &new_qstr, &new_type);
4281 +       vxdprintk(VXD_CBIT(misc, 2), "filename_parentat(new): %p", to_filename);
4282 +       dump_path("cow (par)", &par_path);
4283 +       if (IS_ERR(to_filename))
4284 +               goto retry;
4285 +
4286 +       vxdprintk(VXD_CBIT(misc, 2), "to_filename refcnt=%d", to_filename->refcnt);
4287 +       // putname(to_filename);
4288 +
4289 +       /* this puppy downs the dir inode mutex if successful.
4290 +          dir_path will hold refs to dentry and mnt and
4291 +          we'll have write access to the mnt */
4292 +       new_dentry = filename_create(AT_FDCWD, to_filename, &dir_path, 0);
4293 +       if (!new_dentry || IS_ERR(new_dentry)) {
4294 +               path_put(&par_path);
4295 +               vxdprintk(VXD_CBIT(misc, 2),
4296 +                       "filename_create(new) failed with %ld",
4297 +                       PTR_ERR(new_dentry));
4298 +               goto retry;
4299 +       }
4300 +       vxdprintk(VXD_CBIT(misc, 2),
4301 +               "filename_create(new): %p [" VS_Q("%.*s") ":%d]",
4302 +               new_dentry,
4303 +               new_dentry->d_name.len, new_dentry->d_name.name,
4304 +               new_dentry->d_name.len);
4305 +
4306 +       dump_path("cow (dir)", &dir_path);
4307 +
4308 +       /* take a reference on new_dentry */
4309 +       dget(new_dentry);
4310 +
4311 +       /* dentry/mnt refs handed over to new_path */
4312 +       new_path = &dir_path;
4313 +
4314 +       /* dentry for old/new dir */
4315 +       dir = par_path.dentry;
4316 +
4317 +       /* give up reference on dir */
4318 +       dput(new_path->dentry);
4319 +
4320 +       /* new_dentry already has a reference */
4321 +       new_path->dentry = new_dentry;
4322 +
4323 +       ret = vfs_create(dir->d_inode, new_dentry, mode, 1);
4324 +       vxdprintk(VXD_CBIT(misc, 2),
4325 +               "vfs_create(new): %d", ret);
4326 +       if (ret == -EEXIST) {
4327 +               path_put(&par_path);
4328 +               mutex_unlock(&dir->d_inode->i_mutex);
4329 +               mnt_drop_write(new_path->mnt);
4330 +               path_put(new_path);
4331 +               new_dentry = NULL;
4332 +               goto retry;
4333 +       }
4334 +       else if (ret < 0)
4335 +               goto out_unlock_new;
4336 +
4337 +       /* the old file went away */
4338 +       ret = -ENOENT;
4339 +       if ((redo = d_unhashed(old_dentry)))
4340 +               goto out_unlock_new;
4341 +
4342 +       /* doesn't change refs for old_path */
4343 +       old_file = dentry_open(&old_path, O_RDONLY, current_cred());
4344 +       vxdprintk(VXD_CBIT(misc, 2),
4345 +               "dentry_open(old): %p", old_file);
4346 +       if (IS_ERR(old_file)) {
4347 +               ret = PTR_ERR(old_file);
4348 +               goto out_unlock_new;
4349 +       }
4350 +
4351 +       /* doesn't change refs for new_path */
4352 +       new_file = dentry_open(new_path, O_WRONLY, current_cred());
4353 +       vxdprintk(VXD_CBIT(misc, 2),
4354 +               "dentry_open(new): %p", new_file);
4355 +       if (IS_ERR(new_file)) {
4356 +               ret = PTR_ERR(new_file);
4357 +               goto out_fput_old;
4358 +       }
4359 +
4360 +       /* unlock the inode mutex from filename_create() */
4361 +       mutex_unlock(&dir->d_inode->i_mutex);
4362 +
4363 +       /* drop write access to mnt */
4364 +       mnt_drop_write(new_path->mnt);
4365 +
4366 +       drop = 0;
4367 +
4368 +       size = i_size_read(old_file->f_path.dentry->d_inode);
4369 +       ret = do_cow_splice(old_file, new_file, size);
4370 +       vxdprintk(VXD_CBIT(misc, 2), "do_splice_direct: %d", ret);
4371 +       if (ret < 0) {
4372 +               goto out_fput_both;
4373 +       } else if (ret < size) {
4374 +               ret = -ENOSPC;
4375 +               goto out_fput_both;
4376 +       } else {
4377 +               struct inode *old_inode = old_dentry->d_inode;
4378 +               struct inode *new_inode = new_dentry->d_inode;
4379 +               struct iattr attr = {
4380 +                       .ia_uid = old_inode->i_uid,
4381 +                       .ia_gid = old_inode->i_gid,
4382 +                       .ia_valid = ATTR_UID | ATTR_GID
4383 +                       };
4384 +
4385 +               setattr_copy(new_inode, &attr);
4386 +               mark_inode_dirty(new_inode);
4387 +       }
4388 +
4389 +       /* lock rename mutex */
4390 +       mutex_lock(&old_dentry->d_inode->i_sb->s_vfs_rename_mutex);
4391 +
4392 +       /* drop out late */
4393 +       ret = -ENOENT;
4394 +       if ((redo = d_unhashed(old_dentry)))
4395 +               goto out_unlock;
4396 +
4397 +       vxdprintk(VXD_CBIT(misc, 2),
4398 +               "vfs_rename: [" VS_Q("%*s") ":%d] -> [" VS_Q("%*s") ":%d]",
4399 +               new_dentry->d_name.len, new_dentry->d_name.name,
4400 +               new_dentry->d_name.len,
4401 +               old_dentry->d_name.len, old_dentry->d_name.name,
4402 +               old_dentry->d_name.len);
4403 +       ret = vfs_rename(par_path.dentry->d_inode, new_dentry,
4404 +               old_dentry->d_parent->d_inode, old_dentry, NULL, 0);
4405 +       vxdprintk(VXD_CBIT(misc, 2), "vfs_rename: %d", ret);
4406 +
4407 +out_unlock:
4408 +       mutex_unlock(&old_dentry->d_inode->i_sb->s_vfs_rename_mutex);
4409 +
4410 +out_fput_both:
4411 +       vxdprintk(VXD_CBIT(misc, 3),
4412 +               "fput(new_file=%p[#%ld])", new_file,
4413 +               atomic_long_read(&new_file->f_count));
4414 +       fput(new_file);
4415 +
4416 +out_fput_old:
4417 +       vxdprintk(VXD_CBIT(misc, 3),
4418 +               "fput(old_file=%p[#%ld])", old_file,
4419 +               atomic_long_read(&old_file->f_count));
4420 +       fput(old_file);
4421 +
4422 +out_unlock_new:
4423 +       /* drop references from par_path */
4424 +       path_put(&par_path);
4425 +
4426 +       if (drop) {
4427 +               /* unlock the inode mutex from filename_create() */
4428 +               mutex_unlock(&dir->d_inode->i_mutex);
4429 +
4430 +               /* drop write access to mnt */
4431 +               mnt_drop_write(new_path->mnt);
4432 +       }
4433 +
4434 +       if (!ret)
4435 +               goto out_redo;
4436 +
4437 +       /* error path cleanup */
4438 +       vfs_unlink(dir->d_inode, new_dentry, NULL);
4439 +
4440 +out_redo:
4441 +       if (!redo)
4442 +               goto out_rel_both;
4443 +
4444 +       /* lookup dentry once again
4445 +          old_path will be freed as old_path in out_rel_old */
4446 +       ret = filename_lookup(AT_FDCWD, filename, LOOKUP_FOLLOW, &old_path, NULL);
4447 +       if (ret)
4448 +               goto out_rel_both;
4449 +
4450 +       /* drop reference on new_dentry */
4451 +       dput(new_dentry);
4452 +       new_dentry = old_path.dentry;
4453 +       dget(new_dentry);
4454 +       vxdprintk(VXD_CBIT(misc, 2),
4455 +               "do_path_lookup(redo): %p [" VS_Q("%.*s") ":%d]",
4456 +               new_dentry,
4457 +               new_dentry->d_name.len, new_dentry->d_name.name,
4458 +               new_dentry->d_name.len);
4459 +
4460 +out_rel_both:
4461 +       dump_path("put (new)", new_path);
4462 +       if (new_path)
4463 +               path_put(new_path);
4464 +out_rel_old:
4465 +       dump_path("put (old)", &old_path);
4466 +       path_put(&old_path);
4467 +out_free_path:
4468 +       kfree(path);
4469 +out:
4470 +       if (ret) {
4471 +               dput(new_dentry);
4472 +               new_dentry = ERR_PTR(ret);
4473 +       }
4474 +       // if (!IS_ERR(filename))
4475 +       //        putname(filename);
4476 +       vxdprintk(VXD_CBIT(misc, 3),
4477 +               "cow_break_link returning with %p", new_dentry);
4478 +       return new_dentry;
4479 +}
4480 +
4481 +#endif
4482 +
4483 +int    vx_info_mnt_namespace(struct mnt_namespace *ns, char *buffer)
4484 +{
4485 +       struct path path;
4486 +       struct vfsmount *vmnt;
4487 +       char *pstr, *root;
4488 +       int length = 0;
4489 +
4490 +       pstr = kmalloc(PATH_MAX, GFP_KERNEL);
4491 +       if (!pstr)
4492 +               return 0;
4493 +
4494 +       vmnt = &ns->root->mnt;
4495 +       path.mnt = vmnt;
4496 +       path.dentry = vmnt->mnt_root;
4497 +       root = d_path(&path, pstr, PATH_MAX - 2);
4498 +       length = sprintf(buffer + length,
4499 +               "Namespace:\t%p [#%u]\n"
4500 +               "RootPath:\t%s\n",
4501 +               ns, atomic_read(&ns->count),
4502 +               root);
4503 +       kfree(pstr);
4504 +       return length;
4505 +}
4506 +
4507 +EXPORT_SYMBOL(vx_info_mnt_namespace);
4508 +
4509  /* get the link contents into pagecache */
4510  static char *page_getlink(struct dentry * dentry, struct page **ppage)
4511  {
4512 diff -NurpP --minimal linux-4.4.111/fs/namespace.c linux-4.4.111-vs2.3.9.5/fs/namespace.c
4513 --- linux-4.4.111/fs/namespace.c        2018-01-11 07:57:45.000000000 +0000
4514 +++ linux-4.4.111-vs2.3.9.5/fs/namespace.c      2018-01-09 16:36:32.000000000 +0000
4515 @@ -24,6 +24,11 @@
4516  #include <linux/magic.h>
4517  #include <linux/bootmem.h>
4518  #include <linux/task_work.h>
4519 +#include <linux/vs_base.h>
4520 +#include <linux/vs_context.h>
4521 +#include <linux/vs_tag.h>
4522 +#include <linux/vserver/space.h>
4523 +#include <linux/vserver/global.h>
4524  #include "pnode.h"
4525  #include "internal.h"
4526
4527 @@ -971,6 +976,10 @@ vfs_kern_mount(struct file_system_type *
4528         if (!type)
4529                 return ERR_PTR(-ENODEV);
4530
4531 +       if ((type->fs_flags & FS_BINARY_MOUNTDATA) &&
4532 +               !vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT))
4533 +               return ERR_PTR(-EPERM);
4534 +
4535         mnt = alloc_vfsmnt(name);
4536         if (!mnt)
4537                 return ERR_PTR(-ENOMEM);
4538 @@ -1046,6 +1055,7 @@ static struct mount *clone_mnt(struct mo
4539         mnt->mnt.mnt_root = dget(root);
4540         mnt->mnt_mountpoint = mnt->mnt.mnt_root;
4541         mnt->mnt_parent = mnt;
4542 +       mnt->mnt_tag = old->mnt_tag;
4543         lock_mount_hash();
4544         list_add_tail(&mnt->mnt_instance, &sb->s_mounts);
4545         unlock_mount_hash();
4546 @@ -1620,7 +1630,8 @@ out_unlock:
4547   */
4548  static inline bool may_mount(void)
4549  {
4550 -       return ns_capable(current->nsproxy->mnt_ns->user_ns, CAP_SYS_ADMIN);
4551 +       return vx_ns_capable(current->nsproxy->mnt_ns->user_ns,
4552 +               CAP_SYS_ADMIN, VXC_SECURE_MOUNT);
4553  }
4554
4555  /*
4556 @@ -2121,6 +2132,7 @@ static int do_change_type(struct path *p
4557                 if (err)
4558                         goto out_unlock;
4559         }
4560 +       // mnt->mnt_flags = mnt_flags;
4561
4562         lock_mount_hash();
4563         for (m = mnt; m; m = (recurse ? next_mnt(m, mnt) : NULL))
4564 @@ -2149,12 +2161,14 @@ static bool has_locked_children(struct m
4565   * do loopback mount.
4566   */
4567  static int do_loopback(struct path *path, const char *old_name,
4568 -                               int recurse)
4569 +       vtag_t tag, unsigned long flags, int mnt_flags)
4570  {
4571         struct path old_path;
4572         struct mount *mnt = NULL, *old, *parent;
4573         struct mountpoint *mp;
4574 +       int recurse = flags & MS_REC;
4575         int err;
4576 +
4577         if (!old_name || !*old_name)
4578                 return -EINVAL;
4579         err = kern_path(old_name, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &old_path);
4580 @@ -2234,7 +2248,7 @@ static int change_mount_flags(struct vfs
4581   * on it - tough luck.
4582   */
4583  static int do_remount(struct path *path, int flags, int mnt_flags,
4584 -                     void *data)
4585 +       void *data, vxid_t xid)
4586  {
4587         int err;
4588         struct super_block *sb = path->mnt->mnt_sb;
4589 @@ -2742,6 +2756,7 @@ long do_mount(const char *dev_name, cons
4590         struct path path;
4591         int retval = 0;
4592         int mnt_flags = 0;
4593 +       vtag_t tag = 0;
4594
4595         /* Discard magic */
4596         if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
4597 @@ -2767,6 +2782,12 @@ long do_mount(const char *dev_name, cons
4598         if (!(flags & MS_NOATIME))
4599                 mnt_flags |= MNT_RELATIME;
4600
4601 +       if (dx_parse_tag(data_page, &tag, 1, &mnt_flags, &flags)) {
4602 +               /* FIXME: bind and re-mounts get the tag flag? */
4603 +               if (flags & (MS_BIND|MS_REMOUNT))
4604 +                       flags |= MS_TAGID;
4605 +       }
4606 +
4607         /* Separate the per-mountpoint flags */
4608         if (flags & MS_NOSUID)
4609                 mnt_flags |= MNT_NOSUID;
4610 @@ -2791,15 +2812,17 @@ long do_mount(const char *dev_name, cons
4611                 mnt_flags |= path.mnt->mnt_flags & MNT_ATIME_MASK;
4612         }
4613
4614 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_DEV_MOUNT))
4615 +               mnt_flags |= MNT_NODEV;
4616         flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN |
4617                    MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
4618                    MS_STRICTATIME);
4619
4620         if (flags & MS_REMOUNT)
4621                 retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags,
4622 -                                   data_page);
4623 +                                   data_page, tag);
4624         else if (flags & MS_BIND)
4625 -               retval = do_loopback(&path, dev_name, flags & MS_REC);
4626 +               retval = do_loopback(&path, dev_name, tag, flags, mnt_flags);
4627         else if (flags & (MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
4628                 retval = do_change_type(&path, flags);
4629         else if (flags & MS_MOVE)
4630 @@ -2919,6 +2942,7 @@ struct mnt_namespace *copy_mnt_ns(unsign
4631                         p = next_mnt(p, old);
4632         }
4633         namespace_unlock();
4634 +       atomic_inc(&vs_global_mnt_ns);
4635
4636         if (rootmnt)
4637                 mntput(rootmnt);
4638 @@ -3094,9 +3118,10 @@ SYSCALL_DEFINE2(pivot_root, const char _
4639         new_mnt = real_mount(new.mnt);
4640         root_mnt = real_mount(root.mnt);
4641         old_mnt = real_mount(old.mnt);
4642 -       if (IS_MNT_SHARED(old_mnt) ||
4643 +       if ((IS_MNT_SHARED(old_mnt) ||
4644                 IS_MNT_SHARED(new_mnt->mnt_parent) ||
4645 -               IS_MNT_SHARED(root_mnt->mnt_parent))
4646 +               IS_MNT_SHARED(root_mnt->mnt_parent)) &&
4647 +               !vx_flags(VXF_STATE_SETUP, 0))
4648                 goto out4;
4649         if (!check_mnt(root_mnt) || !check_mnt(new_mnt))
4650                 goto out4;
4651 @@ -3234,6 +3259,7 @@ void put_mnt_ns(struct mnt_namespace *ns
4652         if (!atomic_dec_and_test(&ns->count))
4653                 return;
4654         drop_collected_mounts(&ns->root->mnt);
4655 +       atomic_dec(&vs_global_mnt_ns);
4656         free_mnt_ns(ns);
4657  }
4658
4659 diff -NurpP --minimal linux-4.4.111/fs/nfs/client.c linux-4.4.111-vs2.3.9.5/fs/nfs/client.c
4660 --- linux-4.4.111/fs/nfs/client.c       2016-07-05 04:15:08.000000000 +0000
4661 +++ linux-4.4.111-vs2.3.9.5/fs/nfs/client.c     2018-01-09 16:36:32.000000000 +0000
4662 @@ -583,6 +583,9 @@ int nfs_init_server_rpcclient(struct nfs
4663         if (server->flags & NFS_MOUNT_SOFT)
4664                 server->client->cl_softrtry = 1;
4665
4666 +       server->client->cl_tag = 0;
4667 +       if (server->flags & NFS_MOUNT_TAGGED)
4668 +               server->client->cl_tag = 1;
4669         return 0;
4670  }
4671  EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient);
4672 @@ -760,6 +763,10 @@ static void nfs_server_set_fsinfo(struct
4673                 server->acdirmin = server->acdirmax = 0;
4674         }
4675
4676 +       /* FIXME: needs fsinfo
4677 +       if (server->flags & NFS_MOUNT_TAGGED)
4678 +               sb->s_flags |= MS_TAGGED;       */
4679 +
4680         server->maxfilesize = fsinfo->maxfilesize;
4681
4682         server->time_delta = fsinfo->time_delta;
4683 diff -NurpP --minimal linux-4.4.111/fs/nfs/dir.c linux-4.4.111-vs2.3.9.5/fs/nfs/dir.c
4684 --- linux-4.4.111/fs/nfs/dir.c  2018-01-11 07:57:45.000000000 +0000
4685 +++ linux-4.4.111-vs2.3.9.5/fs/nfs/dir.c        2018-01-09 16:36:32.000000000 +0000
4686 @@ -37,6 +37,7 @@
4687  #include <linux/sched.h>
4688  #include <linux/kmemleak.h>
4689  #include <linux/xattr.h>
4690 +#include <linux/vs_tag.h>
4691
4692  #include "delegation.h"
4693  #include "iostat.h"
4694 @@ -1396,6 +1397,7 @@ struct dentry *nfs_lookup(struct inode *
4695         /* Success: notify readdir to use READDIRPLUS */
4696         nfs_advise_use_readdirplus(dir);
4697
4698 +       dx_propagate_tag(nd, inode);
4699  no_entry:
4700         res = d_splice_alias(inode, dentry);
4701         if (res != NULL) {
4702 diff -NurpP --minimal linux-4.4.111/fs/nfs/inode.c linux-4.4.111-vs2.3.9.5/fs/nfs/inode.c
4703 --- linux-4.4.111/fs/nfs/inode.c        2018-01-11 07:57:45.000000000 +0000
4704 +++ linux-4.4.111-vs2.3.9.5/fs/nfs/inode.c      2018-01-09 16:36:32.000000000 +0000
4705 @@ -38,6 +38,7 @@
4706  #include <linux/slab.h>
4707  #include <linux/compat.h>
4708  #include <linux/freezer.h>
4709 +#include <linux/vs_tag.h>
4710
4711  #include <asm/uaccess.h>
4712
4713 @@ -376,6 +377,8 @@ nfs_fhget(struct super_block *sb, struct
4714         if (inode->i_state & I_NEW) {
4715                 struct nfs_inode *nfsi = NFS_I(inode);
4716                 unsigned long now = jiffies;
4717 +               kuid_t kuid;
4718 +               kgid_t kgid;
4719
4720                 /* We set i_ino for the few things that still rely on it,
4721                  * such as stat(2) */
4722 @@ -419,8 +422,8 @@ nfs_fhget(struct super_block *sb, struct
4723                 inode->i_version = 0;
4724                 inode->i_size = 0;
4725                 clear_nlink(inode);
4726 -               inode->i_uid = make_kuid(&init_user_ns, -2);
4727 -               inode->i_gid = make_kgid(&init_user_ns, -2);
4728 +               kuid = make_kuid(&init_user_ns, -2);
4729 +               kgid = make_kgid(&init_user_ns, -2);
4730                 inode->i_blocks = 0;
4731                 memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
4732                 nfsi->write_io = 0;
4733 @@ -455,11 +458,11 @@ nfs_fhget(struct super_block *sb, struct
4734                 else if (nfs_server_capable(inode, NFS_CAP_NLINK))
4735                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4736                 if (fattr->valid & NFS_ATTR_FATTR_OWNER)
4737 -                       inode->i_uid = fattr->uid;
4738 +                       kuid = fattr->uid;
4739                 else if (nfs_server_capable(inode, NFS_CAP_OWNER))
4740                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4741                 if (fattr->valid & NFS_ATTR_FATTR_GROUP)
4742 -                       inode->i_gid = fattr->gid;
4743 +                       kgid = fattr->gid;
4744                 else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP))
4745                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4746                 if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
4747 @@ -470,6 +473,10 @@ nfs_fhget(struct super_block *sb, struct
4748                          */
4749                         inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
4750                 }
4751 +               inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
4752 +               inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
4753 +               inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, GLOBAL_ROOT_TAG);
4754 +                               /* maybe fattr->xid someday */
4755
4756                 nfs_setsecurity(inode, fattr, label);
4757
4758 @@ -611,6 +618,8 @@ void nfs_setattr_update_inode(struct ino
4759                         inode->i_uid = attr->ia_uid;
4760                 if ((attr->ia_valid & ATTR_GID) != 0)
4761                         inode->i_gid = attr->ia_gid;
4762 +               if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
4763 +                       inode->i_tag = attr->ia_tag;
4764                 nfs_set_cache_invalid(inode, NFS_INO_INVALID_ACCESS
4765                                 | NFS_INO_INVALID_ACL);
4766         }
4767 @@ -1235,7 +1244,9 @@ static int nfs_check_inode_attributes(st
4768         struct nfs_inode *nfsi = NFS_I(inode);
4769         loff_t cur_size, new_isize;
4770         unsigned long invalid = 0;
4771 -
4772 +       kuid_t kuid;
4773 +       kgid_t kgid;
4774 +       ktag_t ktag;
4775
4776         if (nfs_have_delegated_attributes(inode))
4777                 return 0;
4778 @@ -1262,13 +1273,18 @@ static int nfs_check_inode_attributes(st
4779         if (nfsi->nrequests != 0)
4780                 invalid &= ~NFS_INO_REVAL_PAGECACHE;
4781
4782 +       kuid = INOTAG_KUID(DX_TAG(inode), fattr->uid, fattr->gid);
4783 +       kgid = INOTAG_KGID(DX_TAG(inode), fattr->uid, fattr->gid);
4784 +       ktag = INOTAG_KTAG(DX_TAG(inode), fattr->uid, fattr->gid, GLOBAL_ROOT_TAG);
4785 +
4786         /* Have any file permissions changed? */
4787         if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
4788                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4789 -       if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid))
4790 +       if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, kuid))
4791                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4792 -       if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid))
4793 +       if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, kgid))
4794                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4795 +               /* maybe check for tag too? */
4796
4797         /* Has the link count changed? */
4798         if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink)
4799 @@ -1642,6 +1658,9 @@ static int nfs_update_inode(struct inode
4800         unsigned long now = jiffies;
4801         unsigned long save_cache_validity;
4802         bool cache_revalidated = true;
4803 +       kuid_t kuid;
4804 +       kgid_t kgid;
4805 +       ktag_t ktag;
4806
4807         dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n",
4808                         __func__, inode->i_sb->s_id, inode->i_ino,
4809 @@ -1752,6 +1771,9 @@ static int nfs_update_inode(struct inode
4810                 cache_revalidated = false;
4811         }
4812
4813 +       kuid = TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag);
4814 +       kgid = TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag);
4815 +       ktag = TAGINO_KTAG(DX_TAG(inode), inode->i_tag);
4816
4817         if (fattr->valid & NFS_ATTR_FATTR_ATIME)
4818                 memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
4819 @@ -1806,6 +1828,10 @@ static int nfs_update_inode(struct inode
4820                 cache_revalidated = false;
4821         }
4822
4823 +       inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
4824 +       inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
4825 +       inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, ktag);
4826 +
4827         if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
4828                 if (inode->i_nlink != fattr->nlink) {
4829                         invalid |= NFS_INO_INVALID_ATTR;
4830 diff -NurpP --minimal linux-4.4.111/fs/nfs/nfs3xdr.c linux-4.4.111-vs2.3.9.5/fs/nfs/nfs3xdr.c
4831 --- linux-4.4.111/fs/nfs/nfs3xdr.c      2016-07-05 04:12:33.000000000 +0000
4832 +++ linux-4.4.111-vs2.3.9.5/fs/nfs/nfs3xdr.c    2018-01-09 17:17:07.000000000 +0000
4833 @@ -20,6 +20,7 @@
4834  #include <linux/nfs3.h>
4835  #include <linux/nfs_fs.h>
4836  #include <linux/nfsacl.h>
4837 +#include <linux/vs_tag.h>
4838  #include "internal.h"
4839
4840  #define NFSDBG_FACILITY                NFSDBG_XDR
4841 @@ -558,7 +559,8 @@ static __be32 *xdr_decode_nfstime3(__be3
4842   *             set_mtime       mtime;
4843   *     };
4844   */
4845 -static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
4846 +static void encode_sattr3(struct xdr_stream *xdr,
4847 +       const struct iattr *attr, int tag)
4848  {
4849         u32 nbytes;
4850         __be32 *p;
4851 @@ -590,15 +592,19 @@ static void encode_sattr3(struct xdr_str
4852         } else
4853                 *p++ = xdr_zero;
4854
4855 -       if (attr->ia_valid & ATTR_UID) {
4856 +       if (attr->ia_valid & ATTR_UID ||
4857 +               (tag && (attr->ia_valid & ATTR_TAG))) {
4858                 *p++ = xdr_one;
4859 -               *p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid));
4860 +               *p++ = cpu_to_be32(from_kuid(&init_user_ns,
4861 +                       TAGINO_KUID(tag, attr->ia_uid, attr->ia_tag)));
4862         } else
4863                 *p++ = xdr_zero;
4864
4865 -       if (attr->ia_valid & ATTR_GID) {
4866 +       if (attr->ia_valid & ATTR_GID ||
4867 +               (tag && (attr->ia_valid & ATTR_TAG))) {
4868                 *p++ = xdr_one;
4869 -               *p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid));
4870 +               *p++ = cpu_to_be32(from_kgid(&init_user_ns,
4871 +                       TAGINO_KGID(tag, attr->ia_gid, attr->ia_tag)));
4872         } else
4873                 *p++ = xdr_zero;
4874
4875 @@ -887,7 +893,7 @@ static void nfs3_xdr_enc_setattr3args(st
4876                                       const struct nfs3_sattrargs *args)
4877  {
4878         encode_nfs_fh3(xdr, args->fh);
4879 -       encode_sattr3(xdr, args->sattr);
4880 +       encode_sattr3(xdr, args->sattr, req->rq_task->tk_client->cl_tag);
4881         encode_sattrguard3(xdr, args);
4882  }
4883
4884 @@ -1037,13 +1043,13 @@ static void nfs3_xdr_enc_write3args(stru
4885   *     };
4886   */
4887  static void encode_createhow3(struct xdr_stream *xdr,
4888 -                             const struct nfs3_createargs *args)
4889 +       const struct nfs3_createargs *args, int tag)
4890  {
4891         encode_uint32(xdr, args->createmode);
4892         switch (args->createmode) {
4893         case NFS3_CREATE_UNCHECKED:
4894         case NFS3_CREATE_GUARDED:
4895 -               encode_sattr3(xdr, args->sattr);
4896 +               encode_sattr3(xdr, args->sattr, tag);
4897                 break;
4898         case NFS3_CREATE_EXCLUSIVE:
4899                 encode_createverf3(xdr, args->verifier);
4900 @@ -1058,7 +1064,7 @@ static void nfs3_xdr_enc_create3args(str
4901                                      const struct nfs3_createargs *args)
4902  {
4903         encode_diropargs3(xdr, args->fh, args->name, args->len);
4904 -       encode_createhow3(xdr, args);
4905 +       encode_createhow3(xdr, args, req->rq_task->tk_client->cl_tag);
4906  }
4907
4908  /*
4909 @@ -1074,7 +1080,7 @@ static void nfs3_xdr_enc_mkdir3args(stru
4910                                     const struct nfs3_mkdirargs *args)
4911  {
4912         encode_diropargs3(xdr, args->fh, args->name, args->len);
4913 -       encode_sattr3(xdr, args->sattr);
4914 +       encode_sattr3(xdr, args->sattr, req->rq_task->tk_client->cl_tag);
4915  }
4916
4917  /*
4918 @@ -1091,9 +1097,9 @@ static void nfs3_xdr_enc_mkdir3args(stru
4919   *     };
4920   */
4921  static void encode_symlinkdata3(struct xdr_stream *xdr,
4922 -                               const struct nfs3_symlinkargs *args)
4923 +       const struct nfs3_symlinkargs *args, int tag)
4924  {
4925 -       encode_sattr3(xdr, args->sattr);
4926 +       encode_sattr3(xdr, args->sattr, tag);
4927         encode_nfspath3(xdr, args->pages, args->pathlen);
4928  }
4929
4930 @@ -1102,7 +1108,7 @@ static void nfs3_xdr_enc_symlink3args(st
4931                                       const struct nfs3_symlinkargs *args)
4932  {
4933         encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
4934 -       encode_symlinkdata3(xdr, args);
4935 +       encode_symlinkdata3(xdr, args, req->rq_task->tk_client->cl_tag);
4936         xdr->buf->flags |= XDRBUF_WRITE;
4937  }
4938
4939 @@ -1131,24 +1137,24 @@ static void nfs3_xdr_enc_symlink3args(st
4940   *     };
4941   */
4942  static void encode_devicedata3(struct xdr_stream *xdr,
4943 -                              const struct nfs3_mknodargs *args)
4944 +       const struct nfs3_mknodargs *args, int tag)
4945  {
4946 -       encode_sattr3(xdr, args->sattr);
4947 +       encode_sattr3(xdr, args->sattr, tag);
4948         encode_specdata3(xdr, args->rdev);
4949  }
4950
4951  static void encode_mknoddata3(struct xdr_stream *xdr,
4952 -                             const struct nfs3_mknodargs *args)
4953 +       const struct nfs3_mknodargs *args, int tag)
4954  {
4955         encode_ftype3(xdr, args->type);
4956         switch (args->type) {
4957         case NF3CHR:
4958         case NF3BLK:
4959 -               encode_devicedata3(xdr, args);
4960 +               encode_devicedata3(xdr, args, tag);
4961                 break;
4962         case NF3SOCK:
4963         case NF3FIFO:
4964 -               encode_sattr3(xdr, args->sattr);
4965 +               encode_sattr3(xdr, args->sattr, tag);
4966                 break;
4967         case NF3REG:
4968         case NF3DIR:
4969 @@ -1163,7 +1169,7 @@ static void nfs3_xdr_enc_mknod3args(stru
4970                                     const struct nfs3_mknodargs *args)
4971  {
4972         encode_diropargs3(xdr, args->fh, args->name, args->len);
4973 -       encode_mknoddata3(xdr, args);
4974 +       encode_mknoddata3(xdr, args, req->rq_task->tk_client->cl_tag);
4975  }
4976
4977  /*
4978 diff -NurpP --minimal linux-4.4.111/fs/nfs/super.c linux-4.4.111-vs2.3.9.5/fs/nfs/super.c
4979 --- linux-4.4.111/fs/nfs/super.c        2018-01-11 07:57:45.000000000 +0000
4980 +++ linux-4.4.111-vs2.3.9.5/fs/nfs/super.c      2018-01-09 16:36:32.000000000 +0000
4981 @@ -54,6 +54,7 @@
4982  #include <linux/parser.h>
4983  #include <linux/nsproxy.h>
4984  #include <linux/rcupdate.h>
4985 +#include <linux/vs_tag.h>
4986
4987  #include <asm/uaccess.h>
4988
4989 @@ -102,6 +103,7 @@ enum {
4990         Opt_mountport,
4991         Opt_mountvers,
4992         Opt_minorversion,
4993 +       Opt_tagid,
4994
4995         /* Mount options that take string arguments */
4996         Opt_nfsvers,
4997 @@ -114,6 +116,9 @@ enum {
4998         /* Special mount options */
4999         Opt_userspace, Opt_deprecated, Opt_sloppy,
5000
5001 +       /* Linux-VServer tagging options */
5002 +       Opt_tag, Opt_notag,
5003 +
5004         Opt_err
5005  };
5006
5007 @@ -183,6 +188,10 @@ static const match_table_t nfs_mount_opt
5008         { Opt_fscache_uniq, "fsc=%s" },
5009         { Opt_local_lock, "local_lock=%s" },
5010
5011 +       { Opt_tag, "tag" },
5012 +       { Opt_notag, "notag" },
5013 +       { Opt_tagid, "tagid=%u" },
5014 +
5015         /* The following needs to be listed after all other options */
5016         { Opt_nfsvers, "v%s" },
5017
5018 @@ -642,6 +651,7 @@ static void nfs_show_mount_options(struc
5019                 { NFS_MOUNT_NORDIRPLUS, ",nordirplus", "" },
5020                 { NFS_MOUNT_UNSHARED, ",nosharecache", "" },
5021                 { NFS_MOUNT_NORESVPORT, ",noresvport", "" },
5022 +               { NFS_MOUNT_TAGGED, ",tag", "" },
5023                 { 0, NULL, NULL }
5024         };
5025         const struct proc_nfs_info *nfs_infop;
5026 @@ -1324,6 +1334,14 @@ static int nfs_parse_mount_options(char
5027                 case Opt_nomigration:
5028                         mnt->options &= ~NFS_OPTION_MIGRATION;
5029                         break;
5030 +#ifndef CONFIG_TAGGING_NONE
5031 +               case Opt_tag:
5032 +                       mnt->flags |= NFS_MOUNT_TAGGED;
5033 +                       break;
5034 +               case Opt_notag:
5035 +                       mnt->flags &= ~NFS_MOUNT_TAGGED;
5036 +                       break;
5037 +#endif
5038
5039                 /*
5040                  * options that take numeric values
5041 @@ -1410,6 +1428,12 @@ static int nfs_parse_mount_options(char
5042                                 goto out_invalid_value;
5043                         mnt->minorversion = option;
5044                         break;
5045 +#ifdef CONFIG_PROPAGATE
5046 +               case Opt_tagid:
5047 +                       /* use args[0] */
5048 +                       nfs_data.flags |= NFS_MOUNT_TAGGED;
5049 +                       break;
5050 +#endif
5051
5052                 /*
5053                  * options that take text values
5054 diff -NurpP --minimal linux-4.4.111/fs/nfsd/auth.c linux-4.4.111-vs2.3.9.5/fs/nfsd/auth.c
5055 --- linux-4.4.111/fs/nfsd/auth.c        2018-01-11 07:57:45.000000000 +0000
5056 +++ linux-4.4.111-vs2.3.9.5/fs/nfsd/auth.c      2018-01-11 08:03:00.000000000 +0000
5057 @@ -1,6 +1,7 @@
5058  /* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> */
5059
5060  #include <linux/sched.h>
5061 +#include <linux/vs_tag.h>
5062  #include "nfsd.h"
5063  #include "auth.h"
5064
5065 @@ -35,6 +36,9 @@ int nfsd_setuser(struct svc_rqst *rqstp,
5066
5067         new->fsuid = rqstp->rq_cred.cr_uid;
5068         new->fsgid = rqstp->rq_cred.cr_gid;
5069 +       /* FIXME: this desperately needs a tag :)
5070 +       new->xid = (vxid_t)INOTAG_TAG(DX_TAG_NFSD, cred.cr_uid, cred.cr_gid, 0);
5071 +                       */
5072
5073         rqgi = rqstp->rq_cred.cr_group_info;
5074
5075 diff -NurpP --minimal linux-4.4.111/fs/nfsd/nfs3xdr.c linux-4.4.111-vs2.3.9.5/fs/nfsd/nfs3xdr.c
5076 --- linux-4.4.111/fs/nfsd/nfs3xdr.c     2018-01-11 07:57:45.000000000 +0000
5077 +++ linux-4.4.111-vs2.3.9.5/fs/nfsd/nfs3xdr.c   2018-01-09 16:36:32.000000000 +0000
5078 @@ -8,6 +8,7 @@
5079
5080  #include <linux/namei.h>
5081  #include <linux/sunrpc/svc_xprt.h>
5082 +#include <linux/vs_tag.h>
5083  #include "xdr3.h"
5084  #include "auth.h"
5085  #include "netns.h"
5086 @@ -98,6 +99,8 @@ static __be32 *
5087  decode_sattr3(__be32 *p, struct iattr *iap)
5088  {
5089         u32     tmp;
5090 +       kuid_t  kuid = GLOBAL_ROOT_UID;
5091 +       kgid_t  kgid = GLOBAL_ROOT_GID;
5092
5093         iap->ia_valid = 0;
5094
5095 @@ -106,15 +109,18 @@ decode_sattr3(__be32 *p, struct iattr *i
5096                 iap->ia_mode = ntohl(*p++);
5097         }
5098         if (*p++) {
5099 -               iap->ia_uid = make_kuid(&init_user_ns, ntohl(*p++));
5100 +               kuid = make_kuid(&init_user_ns, ntohl(*p++));
5101                 if (uid_valid(iap->ia_uid))
5102                         iap->ia_valid |= ATTR_UID;
5103         }
5104         if (*p++) {
5105 -               iap->ia_gid = make_kgid(&init_user_ns, ntohl(*p++));
5106 +               kgid = make_kgid(&init_user_ns, ntohl(*p++));
5107                 if (gid_valid(iap->ia_gid))
5108                         iap->ia_valid |= ATTR_GID;
5109         }
5110 +       iap->ia_uid = INOTAG_KUID(DX_TAG_NFSD, kuid, kgid);
5111 +       iap->ia_gid = INOTAG_KGID(DX_TAG_NFSD, kuid, kgid);
5112 +       iap->ia_tag = INOTAG_KTAG(DX_TAG_NFSD, kuid, kgid, GLOBAL_ROOT_TAG);
5113         if (*p++) {
5114                 u64     newsize;
5115
5116 @@ -167,8 +173,12 @@ encode_fattr3(struct svc_rqst *rqstp, __
5117         *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
5118         *p++ = htonl((u32) (stat->mode & S_IALLUGO));
5119         *p++ = htonl((u32) stat->nlink);
5120 -       *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
5121 -       *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
5122 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
5123 +               TAGINO_KUID(0 /* FIXME: DX_TAG(dentry->d_inode) */,
5124 +               stat->uid, stat->tag)));
5125 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
5126 +               TAGINO_KGID(0 /* FIXME: DX_TAG(dentry->d_inode) */,
5127 +               stat->gid, stat->tag)));
5128         if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) {
5129                 p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
5130         } else {
5131 diff -NurpP --minimal linux-4.4.111/fs/nfsd/nfs4xdr.c linux-4.4.111-vs2.3.9.5/fs/nfsd/nfs4xdr.c
5132 --- linux-4.4.111/fs/nfsd/nfs4xdr.c     2018-01-11 07:57:45.000000000 +0000
5133 +++ linux-4.4.111-vs2.3.9.5/fs/nfsd/nfs4xdr.c   2018-01-09 16:36:32.000000000 +0000
5134 @@ -40,6 +40,7 @@
5135  #include <linux/utsname.h>
5136  #include <linux/pagemap.h>
5137  #include <linux/sunrpc/svcauth_gss.h>
5138 +#include <linux/vs_tag.h>
5139
5140  #include "idmap.h"
5141  #include "acl.h"
5142 @@ -2637,12 +2638,16 @@ out_acl:
5143                 *p++ = cpu_to_be32(stat.nlink);
5144         }
5145         if (bmval1 & FATTR4_WORD1_OWNER) {
5146 -               status = nfsd4_encode_user(xdr, rqstp, stat.uid);
5147 +               status = nfsd4_encode_user(xdr, rqstp,
5148 +                       TAGINO_KUID(DX_TAG(dentry->d_inode),
5149 +                               stat.uid, stat.tag));
5150                 if (status)
5151                         goto out;
5152         }
5153         if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
5154 -               status = nfsd4_encode_group(xdr, rqstp, stat.gid);
5155 +               status = nfsd4_encode_group(xdr, rqstp,
5156 +                       TAGINO_KGID(DX_TAG(dentry->d_inode),
5157 +                               stat.gid, stat.tag));
5158                 if (status)
5159                         goto out;
5160         }
5161 diff -NurpP --minimal linux-4.4.111/fs/nfsd/nfsxdr.c linux-4.4.111-vs2.3.9.5/fs/nfsd/nfsxdr.c
5162 --- linux-4.4.111/fs/nfsd/nfsxdr.c      2018-01-11 07:57:45.000000000 +0000
5163 +++ linux-4.4.111-vs2.3.9.5/fs/nfsd/nfsxdr.c    2018-01-09 16:36:32.000000000 +0000
5164 @@ -7,6 +7,7 @@
5165  #include "vfs.h"
5166  #include "xdr.h"
5167  #include "auth.h"
5168 +#include <linux/vs_tag.h>
5169
5170  #define NFSDDBG_FACILITY               NFSDDBG_XDR
5171
5172 @@ -89,6 +90,8 @@ static __be32 *
5173  decode_sattr(__be32 *p, struct iattr *iap)
5174  {
5175         u32     tmp, tmp1;
5176 +       kuid_t  kuid = GLOBAL_ROOT_UID;
5177 +       kgid_t  kgid = GLOBAL_ROOT_GID;
5178
5179         iap->ia_valid = 0;
5180
5181 @@ -101,15 +104,18 @@ decode_sattr(__be32 *p, struct iattr *ia
5182                 iap->ia_mode = tmp;
5183         }
5184         if ((tmp = ntohl(*p++)) != (u32)-1) {
5185 -               iap->ia_uid = make_kuid(&init_user_ns, tmp);
5186 +               kuid = make_kuid(&init_user_ns, tmp);
5187                 if (uid_valid(iap->ia_uid))
5188                         iap->ia_valid |= ATTR_UID;
5189         }
5190         if ((tmp = ntohl(*p++)) != (u32)-1) {
5191 -               iap->ia_gid = make_kgid(&init_user_ns, tmp);
5192 +               kgid = make_kgid(&init_user_ns, tmp);
5193                 if (gid_valid(iap->ia_gid))
5194                         iap->ia_valid |= ATTR_GID;
5195         }
5196 +       iap->ia_uid = INOTAG_KUID(DX_TAG_NFSD, kuid, kgid);
5197 +       iap->ia_gid = INOTAG_KGID(DX_TAG_NFSD, kuid, kgid);
5198 +       iap->ia_tag = INOTAG_KTAG(DX_TAG_NFSD, kuid, kgid, GLOBAL_ROOT_TAG);
5199         if ((tmp = ntohl(*p++)) != (u32)-1) {
5200                 iap->ia_valid |= ATTR_SIZE;
5201                 iap->ia_size = tmp;
5202 @@ -154,8 +160,10 @@ encode_fattr(struct svc_rqst *rqstp, __b
5203         *p++ = htonl(nfs_ftypes[type >> 12]);
5204         *p++ = htonl((u32) stat->mode);
5205         *p++ = htonl((u32) stat->nlink);
5206 -       *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
5207 -       *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
5208 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
5209 +               TAGINO_KUID(DX_TAG(dentry->d_inode), stat->uid, stat->tag)));
5210 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
5211 +               TAGINO_KGID(DX_TAG(dentry->d_inode), stat->gid, stat->tag)));
5212
5213         if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
5214                 *p++ = htonl(NFS_MAXPATHLEN);
5215 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/dlmglue.c linux-4.4.111-vs2.3.9.5/fs/ocfs2/dlmglue.c
5216 --- linux-4.4.111/fs/ocfs2/dlmglue.c    2018-01-11 07:57:46.000000000 +0000
5217 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/dlmglue.c  2018-01-09 16:36:32.000000000 +0000
5218 @@ -2128,6 +2128,7 @@ static void __ocfs2_stuff_meta_lvb(struc
5219         lvb->lvb_iclusters = cpu_to_be32(oi->ip_clusters);
5220         lvb->lvb_iuid      = cpu_to_be32(i_uid_read(inode));
5221         lvb->lvb_igid      = cpu_to_be32(i_gid_read(inode));
5222 +       lvb->lvb_itag      = cpu_to_be16(i_tag_read(inode));
5223         lvb->lvb_imode     = cpu_to_be16(inode->i_mode);
5224         lvb->lvb_inlink    = cpu_to_be16(inode->i_nlink);
5225         lvb->lvb_iatime_packed  =
5226 @@ -2178,6 +2179,7 @@ static void ocfs2_refresh_inode_from_lvb
5227
5228         i_uid_write(inode, be32_to_cpu(lvb->lvb_iuid));
5229         i_gid_write(inode, be32_to_cpu(lvb->lvb_igid));
5230 +       i_tag_write(inode, be16_to_cpu(lvb->lvb_itag));
5231         inode->i_mode    = be16_to_cpu(lvb->lvb_imode);
5232         set_nlink(inode, be16_to_cpu(lvb->lvb_inlink));
5233         ocfs2_unpack_timespec(&inode->i_atime,
5234 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/dlmglue.h linux-4.4.111-vs2.3.9.5/fs/ocfs2/dlmglue.h
5235 --- linux-4.4.111/fs/ocfs2/dlmglue.h    2018-01-11 07:57:46.000000000 +0000
5236 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/dlmglue.h  2018-01-09 16:36:32.000000000 +0000
5237 @@ -46,7 +46,8 @@ struct ocfs2_meta_lvb {
5238         __be16       lvb_inlink;
5239         __be32       lvb_iattr;
5240         __be32       lvb_igeneration;
5241 -       __be32       lvb_reserved2;
5242 +       __be16       lvb_itag;
5243 +       __be16       lvb_reserved2;
5244  };
5245
5246  #define OCFS2_QINFO_LVB_VERSION 1
5247 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/file.c linux-4.4.111-vs2.3.9.5/fs/ocfs2/file.c
5248 --- linux-4.4.111/fs/ocfs2/file.c       2018-01-11 07:57:46.000000000 +0000
5249 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/file.c     2018-01-09 16:36:32.000000000 +0000
5250 @@ -1151,7 +1151,7 @@ int ocfs2_setattr(struct dentry *dentry,
5251                 attr->ia_valid &= ~ATTR_SIZE;
5252
5253  #define OCFS2_VALID_ATTRS (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE \
5254 -                          | ATTR_GID | ATTR_UID | ATTR_MODE)
5255 +                          | ATTR_GID | ATTR_UID | ATTR_TAG | ATTR_MODE)
5256         if (!(attr->ia_valid & OCFS2_VALID_ATTRS))
5257                 return 0;
5258
5259 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/inode.c linux-4.4.111-vs2.3.9.5/fs/ocfs2/inode.c
5260 --- linux-4.4.111/fs/ocfs2/inode.c      2016-07-05 04:12:34.000000000 +0000
5261 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/inode.c    2018-01-09 16:36:32.000000000 +0000
5262 @@ -28,6 +28,7 @@
5263  #include <linux/highmem.h>
5264  #include <linux/pagemap.h>
5265  #include <linux/quotaops.h>
5266 +#include <linux/vs_tag.h>
5267
5268  #include <asm/byteorder.h>
5269
5270 @@ -78,11 +79,13 @@ void ocfs2_set_inode_flags(struct inode
5271  {
5272         unsigned int flags = OCFS2_I(inode)->ip_attr;
5273
5274 -       inode->i_flags &= ~(S_IMMUTABLE |
5275 +       inode->i_flags &= ~(S_IMMUTABLE | S_IXUNLINK |
5276                 S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
5277
5278         if (flags & OCFS2_IMMUTABLE_FL)
5279                 inode->i_flags |= S_IMMUTABLE;
5280 +       if (flags & OCFS2_IXUNLINK_FL)
5281 +               inode->i_flags |= S_IXUNLINK;
5282
5283         if (flags & OCFS2_SYNC_FL)
5284                 inode->i_flags |= S_SYNC;
5285 @@ -92,25 +95,44 @@ void ocfs2_set_inode_flags(struct inode
5286                 inode->i_flags |= S_NOATIME;
5287         if (flags & OCFS2_DIRSYNC_FL)
5288                 inode->i_flags |= S_DIRSYNC;
5289 +
5290 +       inode->i_vflags &= ~(V_BARRIER | V_COW);
5291 +
5292 +       if (flags & OCFS2_BARRIER_FL)
5293 +               inode->i_vflags |= V_BARRIER;
5294 +       if (flags & OCFS2_COW_FL)
5295 +               inode->i_vflags |= V_COW;
5296  }
5297
5298  /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */
5299  void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi)
5300  {
5301         unsigned int flags = oi->vfs_inode.i_flags;
5302 +       unsigned int vflags = oi->vfs_inode.i_vflags;
5303 +
5304 +       oi->ip_attr &= ~(OCFS2_SYNC_FL | OCFS2_APPEND_FL |
5305 +                       OCFS2_IMMUTABLE_FL | OCFS2_IXUNLINK_FL |
5306 +                       OCFS2_NOATIME_FL | OCFS2_DIRSYNC_FL |
5307 +                       OCFS2_BARRIER_FL | OCFS2_COW_FL);
5308 +
5309 +       if (flags & S_IMMUTABLE)
5310 +               oi->ip_attr |= OCFS2_IMMUTABLE_FL;
5311 +       if (flags & S_IXUNLINK)
5312 +               oi->ip_attr |= OCFS2_IXUNLINK_FL;
5313
5314 -       oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL|
5315 -                       OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL);
5316         if (flags & S_SYNC)
5317                 oi->ip_attr |= OCFS2_SYNC_FL;
5318         if (flags & S_APPEND)
5319                 oi->ip_attr |= OCFS2_APPEND_FL;
5320 -       if (flags & S_IMMUTABLE)
5321 -               oi->ip_attr |= OCFS2_IMMUTABLE_FL;
5322         if (flags & S_NOATIME)
5323                 oi->ip_attr |= OCFS2_NOATIME_FL;
5324         if (flags & S_DIRSYNC)
5325                 oi->ip_attr |= OCFS2_DIRSYNC_FL;
5326 +
5327 +       if (vflags & V_BARRIER)
5328 +               oi->ip_attr |= OCFS2_BARRIER_FL;
5329 +       if (vflags & V_COW)
5330 +               oi->ip_attr |= OCFS2_COW_FL;
5331  }
5332
5333  struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno)
5334 @@ -268,6 +290,8 @@ void ocfs2_populate_inode(struct inode *
5335         struct super_block *sb;
5336         struct ocfs2_super *osb;
5337         int use_plocks = 1;
5338 +       uid_t uid;
5339 +       gid_t gid;
5340
5341         sb = inode->i_sb;
5342         osb = OCFS2_SB(sb);
5343 @@ -296,8 +320,12 @@ void ocfs2_populate_inode(struct inode *
5344         inode->i_generation = le32_to_cpu(fe->i_generation);
5345         inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
5346         inode->i_mode = le16_to_cpu(fe->i_mode);
5347 -       i_uid_write(inode, le32_to_cpu(fe->i_uid));
5348 -       i_gid_write(inode, le32_to_cpu(fe->i_gid));
5349 +       uid = le32_to_cpu(fe->i_uid);
5350 +       gid = le32_to_cpu(fe->i_gid);
5351 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), uid, gid));
5352 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), uid, gid));
5353 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), uid, gid,
5354 +               /* le16_to_cpu(raw_inode->i_raw_tag) */ 0));
5355
5356         /* Fast symlinks will have i_size but no allocated clusters. */
5357         if (S_ISLNK(inode->i_mode) && !fe->i_clusters) {
5358 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/inode.h linux-4.4.111-vs2.3.9.5/fs/ocfs2/inode.h
5359 --- linux-4.4.111/fs/ocfs2/inode.h      2016-07-05 04:15:08.000000000 +0000
5360 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/inode.h    2018-01-09 16:36:32.000000000 +0000
5361 @@ -161,6 +161,7 @@ struct buffer_head *ocfs2_bread(struct i
5362
5363  void ocfs2_set_inode_flags(struct inode *inode);
5364  void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
5365 +int ocfs2_sync_flags(struct inode *inode, int, int);
5366
5367  static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
5368  {
5369 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/ioctl.c linux-4.4.111-vs2.3.9.5/fs/ocfs2/ioctl.c
5370 --- linux-4.4.111/fs/ocfs2/ioctl.c      2015-10-29 09:21:37.000000000 +0000
5371 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/ioctl.c    2018-01-09 16:36:32.000000000 +0000
5372 @@ -76,7 +76,41 @@ static int ocfs2_get_inode_attr(struct i
5373         return status;
5374  }
5375
5376 -static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
5377 +int ocfs2_sync_flags(struct inode *inode, int flags, int vflags)
5378 +{
5379 +       struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
5380 +       struct buffer_head *bh = NULL;
5381 +       handle_t *handle = NULL;
5382 +       int status;
5383 +
5384 +       status = ocfs2_inode_lock(inode, &bh, 1);
5385 +       if (status < 0) {
5386 +               mlog_errno(status);
5387 +               return status;
5388 +       }
5389 +       handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
5390 +       if (IS_ERR(handle)) {
5391 +               status = PTR_ERR(handle);
5392 +               mlog_errno(status);
5393 +               goto bail_unlock;
5394 +       }
5395 +
5396 +       inode->i_flags = flags;
5397 +       inode->i_vflags = vflags;
5398 +       ocfs2_get_inode_flags(OCFS2_I(inode));
5399 +
5400 +       status = ocfs2_mark_inode_dirty(handle, inode, bh);
5401 +       if (status < 0)
5402 +               mlog_errno(status);
5403 +
5404 +       ocfs2_commit_trans(osb, handle);
5405 +bail_unlock:
5406 +       ocfs2_inode_unlock(inode, 1);
5407 +       brelse(bh);
5408 +       return status;
5409 +}
5410 +
5411 +int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
5412                                 unsigned mask)
5413  {
5414         struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
5415 @@ -116,6 +150,11 @@ static int ocfs2_set_inode_attr(struct i
5416                         goto bail_unlock;
5417         }
5418
5419 +       if (IS_BARRIER(inode)) {
5420 +               vxwprintk_task(1, "messing with the barrier.");
5421 +               goto bail_unlock;
5422 +       }
5423 +
5424         handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
5425         if (IS_ERR(handle)) {
5426                 status = PTR_ERR(handle);
5427 @@ -841,6 +880,7 @@ bail:
5428         return status;
5429  }
5430
5431 +
5432  long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
5433  {
5434         struct inode *inode = file_inode(filp);
5435 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/namei.c linux-4.4.111-vs2.3.9.5/fs/ocfs2/namei.c
5436 --- linux-4.4.111/fs/ocfs2/namei.c      2018-01-11 07:57:46.000000000 +0000
5437 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/namei.c    2018-01-09 16:36:32.000000000 +0000
5438 @@ -41,6 +41,7 @@
5439  #include <linux/slab.h>
5440  #include <linux/highmem.h>
5441  #include <linux/quotaops.h>
5442 +#include <linux/vs_tag.h>
5443
5444  #include <cluster/masklog.h>
5445
5446 @@ -516,6 +517,7 @@ static int __ocfs2_mknod_locked(struct i
5447         struct ocfs2_extent_list *fel;
5448         u16 feat;
5449         struct ocfs2_inode_info *oi = OCFS2_I(inode);
5450 +       ktag_t ktag;
5451
5452         *new_fe_bh = NULL;
5453
5454 @@ -553,8 +555,13 @@ static int __ocfs2_mknod_locked(struct i
5455         fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
5456         fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
5457         fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
5458 -       fe->i_uid = cpu_to_le32(i_uid_read(inode));
5459 -       fe->i_gid = cpu_to_le32(i_gid_read(inode));
5460 +
5461 +       ktag = make_ktag(&init_user_ns, dx_current_fstag(osb->sb));
5462 +       fe->i_uid = cpu_to_le32(from_kuid(&init_user_ns,
5463 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, ktag)));
5464 +       fe->i_gid = cpu_to_le32(from_kgid(&init_user_ns,
5465 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, ktag)));
5466 +       inode->i_tag = ktag; /* is this correct? */
5467         fe->i_mode = cpu_to_le16(inode->i_mode);
5468         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
5469                 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
5470 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/ocfs2.h linux-4.4.111-vs2.3.9.5/fs/ocfs2/ocfs2.h
5471 --- linux-4.4.111/fs/ocfs2/ocfs2.h      2018-01-11 07:57:46.000000000 +0000
5472 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/ocfs2.h    2018-01-09 17:21:54.000000000 +0000
5473 @@ -289,6 +289,7 @@ enum ocfs2_mount_options
5474         OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT = 1 << 15,  /* Journal Async Commit */
5475         OCFS2_MOUNT_ERRORS_CONT = 1 << 16, /* Return EIO to the calling process on error */
5476         OCFS2_MOUNT_ERRORS_ROFS = 1 << 17, /* Change filesystem to read-only on error */
5477 +       OCFS2_MOUNT_TAGGED = 1 << 18, /* use tagging */
5478  };
5479
5480  #define OCFS2_OSB_SOFT_RO      0x0001
5481 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/ocfs2_fs.h linux-4.4.111-vs2.3.9.5/fs/ocfs2/ocfs2_fs.h
5482 --- linux-4.4.111/fs/ocfs2/ocfs2_fs.h   2016-07-05 04:12:34.000000000 +0000
5483 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/ocfs2_fs.h 2018-01-09 16:36:32.000000000 +0000
5484 @@ -275,6 +275,11 @@
5485  #define OCFS2_TOPDIR_FL                        FS_TOPDIR_FL    /* Top of directory hierarchies*/
5486  #define OCFS2_RESERVED_FL              FS_RESERVED_FL  /* reserved for ext2 lib */
5487
5488 +#define OCFS2_IXUNLINK_FL              FS_IXUNLINK_FL  /* Immutable invert on unlink */
5489 +
5490 +#define OCFS2_BARRIER_FL               FS_BARRIER_FL   /* Barrier for chroot() */
5491 +#define OCFS2_COW_FL                   FS_COW_FL       /* Copy on Write marker */
5492 +
5493  #define OCFS2_FL_VISIBLE               FS_FL_USER_VISIBLE      /* User visible flags */
5494  #define OCFS2_FL_MODIFIABLE            FS_FL_USER_MODIFIABLE   /* User modifiable flags */
5495
5496 diff -NurpP --minimal linux-4.4.111/fs/ocfs2/super.c linux-4.4.111-vs2.3.9.5/fs/ocfs2/super.c
5497 --- linux-4.4.111/fs/ocfs2/super.c      2016-07-05 04:12:34.000000000 +0000
5498 +++ linux-4.4.111-vs2.3.9.5/fs/ocfs2/super.c    2018-01-09 17:22:51.000000000 +0000
5499 @@ -193,6 +193,7 @@ enum {
5500         Opt_dir_resv_level,
5501         Opt_journal_async_commit,
5502         Opt_err_cont,
5503 +       Opt_tag, Opt_notag, Opt_tagid,
5504         Opt_err,
5505  };
5506
5507 @@ -226,6 +227,9 @@ static const match_table_t tokens = {
5508         {Opt_dir_resv_level, "dir_resv_level=%u"},
5509         {Opt_journal_async_commit, "journal_async_commit"},
5510         {Opt_err_cont, "errors=continue"},
5511 +       {Opt_tag, "tag"},
5512 +       {Opt_notag, "notag"},
5513 +       {Opt_tagid, "tagid=%u"},
5514         {Opt_err, NULL}
5515  };
5516
5517 @@ -677,6 +681,13 @@ static int ocfs2_remount(struct super_bl
5518                 goto out;
5519         }
5520
5521 +       if ((osb->s_mount_opt & OCFS2_MOUNT_TAGGED) !=
5522 +           (parsed_options.mount_opt & OCFS2_MOUNT_TAGGED)) {
5523 +               ret = -EINVAL;
5524 +               mlog(ML_ERROR, "Cannot change tagging on remount\n");
5525 +               goto out;
5526 +       }
5527 +
5528         /* We're going to/from readonly mode. */
5529         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
5530                 /* Disable quota accounting before remounting RO */
5531 @@ -1166,6 +1177,9 @@ static int ocfs2_fill_super(struct super
5532
5533         ocfs2_complete_mount_recovery(osb);
5534
5535 +       if (osb->s_mount_opt & OCFS2_MOUNT_TAGGED)
5536 +               sb->s_flags |= MS_TAGGED;
5537 +
5538         if (ocfs2_mount_local(osb))
5539                 snprintf(nodestr, sizeof(nodestr), "local");
5540         else
5541 @@ -1486,6 +1500,20 @@ static int ocfs2_parse_options(struct su
5542                 case Opt_journal_async_commit:
5543                         mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
5544                         break;
5545 +#ifndef CONFIG_TAGGING_NONE
5546 +               case Opt_tag:
5547 +                       mopt->mount_opt |= OCFS2_MOUNT_TAGGED;
5548 +                       break;
5549 +               case Opt_notag:
5550 +                       mopt->mount_opt &= ~OCFS2_MOUNT_TAGGED;
5551 +                       break;
5552 +#endif
5553 +#ifdef CONFIG_PROPAGATE
5554 +               case Opt_tagid:
5555 +                       /* use args[0] */
5556 +                       mopt->mount_opt |= OCFS2_MOUNT_TAGGED;
5557 +                       break;
5558 +#endif
5559                 default:
5560                         mlog(ML_ERROR,
5561                              "Unrecognized mount option \"%s\" "
5562 diff -NurpP --minimal linux-4.4.111/fs/open.c linux-4.4.111-vs2.3.9.5/fs/open.c
5563 --- linux-4.4.111/fs/open.c     2018-01-11 07:57:46.000000000 +0000
5564 +++ linux-4.4.111-vs2.3.9.5/fs/open.c   2018-01-09 16:36:32.000000000 +0000
5565 @@ -31,6 +31,11 @@
5566  #include <linux/ima.h>
5567  #include <linux/dnotify.h>
5568  #include <linux/compat.h>
5569 +#include <linux/vs_base.h>
5570 +#include <linux/vs_limit.h>
5571 +#include <linux/vs_tag.h>
5572 +#include <linux/vs_cowbl.h>
5573 +#include <linux/vserver/dlimit.h>
5574
5575  #include "internal.h"
5576
5577 @@ -70,6 +75,11 @@ long vfs_truncate(struct path *path, lof
5578         struct inode *inode;
5579         long error;
5580
5581 +#ifdef CONFIG_VSERVER_COWBL
5582 +       error = cow_check_and_break(path);
5583 +       if (error)
5584 +               goto out;
5585 +#endif
5586         inode = path->dentry->d_inode;
5587
5588         /* For directories it's -EISDIR, for other non-regulars - -EINVAL */
5589 @@ -548,6 +558,13 @@ SYSCALL_DEFINE3(fchmodat, int, dfd, cons
5590         unsigned int lookup_flags = LOOKUP_FOLLOW;
5591  retry:
5592         error = user_path_at(dfd, filename, lookup_flags, &path);
5593 +#ifdef CONFIG_VSERVER_COWBL
5594 +       if (!error) {
5595 +               error = cow_check_and_break(&path);
5596 +               if (error)
5597 +                       path_put(&path);
5598 +       }
5599 +#endif
5600         if (!error) {
5601                 error = chmod_common(&path, mode);
5602                 path_put(&path);
5603 @@ -582,13 +599,15 @@ retry_deleg:
5604                 if (!uid_valid(uid))
5605                         return -EINVAL;
5606                 newattrs.ia_valid |= ATTR_UID;
5607 -               newattrs.ia_uid = uid;
5608 +               newattrs.ia_uid = make_kuid(&init_user_ns,
5609 +                       dx_map_uid(user));
5610         }
5611         if (group != (gid_t) -1) {
5612                 if (!gid_valid(gid))
5613                         return -EINVAL;
5614                 newattrs.ia_valid |= ATTR_GID;
5615 -               newattrs.ia_gid = gid;
5616 +               newattrs.ia_gid = make_kgid(&init_user_ns,
5617 +                       dx_map_gid(group));
5618         }
5619         if (!S_ISDIR(inode->i_mode))
5620                 newattrs.ia_valid |=
5621 @@ -626,6 +645,10 @@ retry:
5622         error = mnt_want_write(path.mnt);
5623         if (error)
5624                 goto out_release;
5625 +#ifdef CONFIG_VSERVER_COWBL
5626 +       error = cow_check_and_break(&path);
5627 +       if (!error)
5628 +#endif
5629         error = chown_common(&path, user, group);
5630         mnt_drop_write(path.mnt);
5631  out_release:
5632 diff -NurpP --minimal linux-4.4.111/fs/proc/array.c linux-4.4.111-vs2.3.9.5/fs/proc/array.c
5633 --- linux-4.4.111/fs/proc/array.c       2018-01-11 07:57:46.000000000 +0000
5634 +++ linux-4.4.111-vs2.3.9.5/fs/proc/array.c     2018-01-09 17:30:44.000000000 +0000
5635 @@ -83,6 +83,8 @@
5636  #include <linux/tracehook.h>
5637  #include <linux/string_helpers.h>
5638  #include <linux/user_namespace.h>
5639 +#include <linux/vs_context.h>
5640 +#include <linux/vs_network.h>
5641
5642  #include <asm/pgtable.h>
5643  #include <asm/processor.h>
5644 @@ -154,6 +156,9 @@ static inline void task_state(struct seq
5645         ppid = pid_alive(p) ?
5646                 task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
5647
5648 +       if (unlikely(vx_current_initpid(p->pid)))
5649 +               ppid = 0;
5650 +
5651         tracer = ptrace_parent(p);
5652         if (tracer)
5653                 tpid = task_pid_nr_ns(tracer, ns);
5654 @@ -292,8 +297,8 @@ static inline void task_sig(struct seq_f
5655         render_sigset_t(m, "SigCgt:\t", &caught);
5656  }
5657
5658 -static void render_cap_t(struct seq_file *m, const char *header,
5659 -                       kernel_cap_t *a)
5660 +void render_cap_t(struct seq_file *m, const char *header,
5661 +                       struct vx_info *vxi, kernel_cap_t *a)
5662  {
5663         unsigned __capi;
5664
5665 @@ -320,11 +325,12 @@ static inline void task_cap(struct seq_f
5666         cap_ambient     = cred->cap_ambient;
5667         rcu_read_unlock();
5668
5669 -       render_cap_t(m, "CapInh:\t", &cap_inheritable);
5670 -       render_cap_t(m, "CapPrm:\t", &cap_permitted);
5671 -       render_cap_t(m, "CapEff:\t", &cap_effective);
5672 -       render_cap_t(m, "CapBnd:\t", &cap_bset);
5673 -       render_cap_t(m, "CapAmb:\t", &cap_ambient);
5674 +       /* FIXME: maybe move the p->vx_info masking to __task_cred() ? */
5675 +       render_cap_t(m, "CapInh:\t", p->vx_info, &cap_inheritable);
5676 +       render_cap_t(m, "CapPrm:\t", p->vx_info, &cap_permitted);
5677 +       render_cap_t(m, "CapEff:\t", p->vx_info, &cap_effective);
5678 +       render_cap_t(m, "CapBnd:\t", p->vx_info, &cap_bset);
5679 +       render_cap_t(m, "CapAmb:\t", p->vx_info, &cap_ambient);
5680  }
5681
5682  static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
5683 @@ -351,6 +357,43 @@ static void task_cpus_allowed(struct seq
5684                    cpumask_pr_args(&task->cpus_allowed));
5685  }
5686
5687 +int proc_pid_nsproxy(struct seq_file *m, struct pid_namespace *ns,
5688 +                       struct pid *pid, struct task_struct *task)
5689 +{
5690 +       seq_printf(m,   "Proxy:\t%p(%c)\n"
5691 +                       "Count:\t%u\n"
5692 +                       "uts:\t%p(%c)\n"
5693 +                       "ipc:\t%p(%c)\n"
5694 +                       "mnt:\t%p(%c)\n"
5695 +                       "pid:\t%p(%c)\n"
5696 +                       "net:\t%p(%c)\n",
5697 +                       task->nsproxy,
5698 +                       (task->nsproxy == init_task.nsproxy ? 'I' : '-'),
5699 +                       atomic_read(&task->nsproxy->count),
5700 +                       task->nsproxy->uts_ns,
5701 +                       (task->nsproxy->uts_ns == init_task.nsproxy->uts_ns ? 'I' : '-'),
5702 +                       task->nsproxy->ipc_ns,
5703 +                       (task->nsproxy->ipc_ns == init_task.nsproxy->ipc_ns ? 'I' : '-'),
5704 +                       task->nsproxy->mnt_ns,
5705 +                       (task->nsproxy->mnt_ns == init_task.nsproxy->mnt_ns ? 'I' : '-'),
5706 +                       task->nsproxy->pid_ns_for_children,
5707 +                       (task->nsproxy->pid_ns_for_children ==
5708 +                               init_task.nsproxy->pid_ns_for_children ? 'I' : '-'),
5709 +                       task->nsproxy->net_ns,
5710 +                       (task->nsproxy->net_ns == init_task.nsproxy->net_ns ? 'I' : '-'));
5711 +       return 0;
5712 +}
5713 +
5714 +void task_vs_id(struct seq_file *m, struct task_struct *task)
5715 +{
5716 +       if (task_vx_flags(task, VXF_HIDE_VINFO, 0))
5717 +               return;
5718 +
5719 +       seq_printf(m, "VxID:\t%d\n", vx_task_xid(task));
5720 +       seq_printf(m, "NxID:\t%d\n", nx_task_nid(task));
5721 +}
5722 +
5723 +
5724  int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
5725                         struct pid *pid, struct task_struct *task)
5726  {
5727 @@ -368,6 +411,7 @@ int proc_pid_status(struct seq_file *m,
5728         task_seccomp(m, task);
5729         task_cpus_allowed(m, task);
5730         cpuset_task_status_allowed(m, task);
5731 +       task_vs_id(m, task);
5732         task_context_switch_counts(m, task);
5733         return 0;
5734  }
5735 @@ -471,6 +515,17 @@ static int do_task_stat(struct seq_file
5736         /* convert nsec -> ticks */
5737         start_time = nsec_to_clock_t(task->real_start_time);
5738
5739 +       /* fixup start time for virt uptime */
5740 +       if (vx_flags(VXF_VIRT_UPTIME, 0)) {
5741 +               unsigned long long bias =
5742 +                       current->vx_info->cvirt.bias_clock;
5743 +
5744 +               if (start_time > bias)
5745 +                       start_time -= bias;
5746 +               else
5747 +                       start_time = 0;
5748 +       }
5749 +
5750         seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
5751         seq_put_decimal_ll(m, ' ', ppid);
5752         seq_put_decimal_ll(m, ' ', pgid);
5753 diff -NurpP --minimal linux-4.4.111/fs/proc/base.c linux-4.4.111-vs2.3.9.5/fs/proc/base.c
5754 --- linux-4.4.111/fs/proc/base.c        2018-01-11 07:57:46.000000000 +0000
5755 +++ linux-4.4.111-vs2.3.9.5/fs/proc/base.c      2018-01-09 16:36:32.000000000 +0000
5756 @@ -87,6 +87,8 @@
5757  #include <linux/slab.h>
5758  #include <linux/flex_array.h>
5759  #include <linux/posix-timers.h>
5760 +#include <linux/vs_context.h>
5761 +#include <linux/vs_network.h>
5762  #ifdef CONFIG_HARDWALL
5763  #include <asm/hardwall.h>
5764  #endif
5765 @@ -1097,11 +1099,15 @@ static ssize_t oom_adj_write(struct file
5766                 oom_adj = (oom_adj * OOM_SCORE_ADJ_MAX) / -OOM_DISABLE;
5767
5768         if (oom_adj < task->signal->oom_score_adj &&
5769 -           !capable(CAP_SYS_RESOURCE)) {
5770 +           !vx_capable(CAP_SYS_RESOURCE, VXC_OOM_ADJUST)) {
5771                 err = -EACCES;
5772                 goto err_sighand;
5773         }
5774
5775 +       /* prevent guest processes from circumventing the oom killer */
5776 +       if (vx_current_xid() && (oom_adj == OOM_DISABLE))
5777 +               oom_adj = OOM_ADJUST_MIN;
5778 +
5779         /*
5780          * /proc/pid/oom_adj is provided for legacy purposes, ask users to use
5781          * /proc/pid/oom_score_adj instead.
5782 @@ -1666,6 +1672,8 @@ struct inode *proc_pid_make_inode(struct
5783                 inode->i_gid = cred->egid;
5784                 rcu_read_unlock();
5785         }
5786 +       /* procfs is xid tagged */
5787 +       i_tag_write(inode, (vtag_t)vx_task_xid(task));
5788         security_task_to_inode(task, inode);
5789
5790  out:
5791 @@ -1711,6 +1719,8 @@ int pid_getattr(struct vfsmount *mnt, st
5792
5793  /* dentry stuff */
5794
5795 +// static unsigned name_to_int(struct dentry *dentry);
5796 +
5797  /*
5798   *     Exceptional case: normally we are not allowed to unhash a busy
5799   * directory. In this case, however, we can do it - no aliasing problems
5800 @@ -1739,6 +1749,19 @@ int pid_revalidate(struct dentry *dentry
5801         task = get_proc_task(inode);
5802
5803         if (task) {
5804 +               unsigned pid = name_to_int(&dentry->d_name);
5805 +
5806 +               if (pid != ~0U && pid != vx_map_pid(task->pid) &&
5807 +                       pid != __task_pid_nr_ns(task, PIDTYPE_PID,
5808 +                               task_active_pid_ns(task))) {
5809 +                       vxdprintk(VXD_CBIT(misc, 10),
5810 +                               VS_Q("%*s") " dropped by pid_revalidate(%d!=%d)",
5811 +                               dentry->d_name.len, dentry->d_name.name,
5812 +                               pid, vx_map_pid(task->pid));
5813 +                       put_task_struct(task);
5814 +                       d_drop(dentry);
5815 +                       return 0;
5816 +               }
5817                 if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
5818                     task_dumpable(task)) {
5819                         rcu_read_lock();
5820 @@ -2283,6 +2306,13 @@ static struct dentry *proc_pident_lookup
5821         if (!task)
5822                 goto out_no_task;
5823
5824 +       /* TODO: maybe we can come up with a generic approach? */
5825 +       if (task_vx_flags(task, VXF_HIDE_VINFO, 0) &&
5826 +               (dentry->d_name.len == 5) &&
5827 +               (!memcmp(dentry->d_name.name, "vinfo", 5) ||
5828 +               !memcmp(dentry->d_name.name, "ninfo", 5)))
5829 +               goto out;
5830 +
5831         /*
5832          * Yes, it does not scale. And it should not. Don't add
5833          * new entries into /proc/<tgid>/ without very good reasons.
5834 @@ -2725,6 +2755,11 @@ static int proc_pid_personality(struct s
5835  static const struct file_operations proc_task_operations;
5836  static const struct inode_operations proc_task_inode_operations;
5837
5838 +extern int proc_pid_vx_info(struct seq_file *,
5839 +       struct pid_namespace *, struct pid *, struct task_struct *);
5840 +extern int proc_pid_nx_info(struct seq_file *,
5841 +       struct pid_namespace *, struct pid *, struct task_struct *);
5842 +
5843  static const struct pid_entry tgid_base_stuff[] = {
5844         DIR("task",       S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
5845         DIR("fd",         S_IRUSR|S_IXUSR, proc_fd_inode_operations, proc_fd_operations),
5846 @@ -2789,6 +2824,8 @@ static const struct pid_entry tgid_base_
5847  #ifdef CONFIG_CGROUPS
5848         ONE("cgroup",  S_IRUGO, proc_cgroup_show),
5849  #endif
5850 +       ONE("vinfo",      S_IRUGO, proc_pid_vx_info),
5851 +       ONE("ninfo",      S_IRUGO, proc_pid_nx_info),
5852         ONE("oom_score",  S_IRUGO, proc_oom_score),
5853         REG("oom_adj",    S_IRUGO|S_IWUSR, proc_oom_adj_operations),
5854         REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
5855 @@ -3003,7 +3040,7 @@ retry:
5856         iter.task = NULL;
5857         pid = find_ge_pid(iter.tgid, ns);
5858         if (pid) {
5859 -               iter.tgid = pid_nr_ns(pid, ns);
5860 +               iter.tgid = pid_unmapped_nr_ns(pid, ns);
5861                 iter.task = pid_task(pid, PIDTYPE_PID);
5862                 /* What we to know is if the pid we have find is the
5863                  * pid of a thread_group_leader.  Testing for task
5864 @@ -3063,8 +3100,10 @@ int proc_pid_readdir(struct file *file,
5865                 if (!has_pid_permissions(ns, iter.task, 2))
5866                         continue;
5867
5868 -               len = snprintf(name, sizeof(name), "%d", iter.tgid);
5869 +               len = snprintf(name, sizeof(name), "%d", vx_map_tgid(iter.tgid));
5870                 ctx->pos = iter.tgid + TGID_OFFSET;
5871 +               if (!vx_proc_task_visible(iter.task))
5872 +                       continue;
5873                 if (!proc_fill_cache(file, ctx, name, len,
5874                                      proc_pid_instantiate, iter.task, NULL)) {
5875                         put_task_struct(iter.task);
5876 @@ -3161,6 +3200,7 @@ static const struct pid_entry tid_base_s
5877         REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations),
5878         REG("setgroups",  S_IRUGO|S_IWUSR, proc_setgroups_operations),
5879  #endif
5880 +       ONE("nsproxy",  S_IRUGO, proc_pid_nsproxy),
5881  };
5882
5883  static int proc_tid_base_readdir(struct file *file, struct dir_context *ctx)
5884 @@ -3227,6 +3267,8 @@ static struct dentry *proc_task_lookup(s
5885         tid = name_to_int(&dentry->d_name);
5886         if (tid == ~0U)
5887                 goto out;
5888 +       if (vx_current_initpid(tid))
5889 +               goto out;
5890
5891         ns = dentry->d_sb->s_fs_info;
5892         rcu_read_lock();
5893 diff -NurpP --minimal linux-4.4.111/fs/proc/generic.c linux-4.4.111-vs2.3.9.5/fs/proc/generic.c
5894 --- linux-4.4.111/fs/proc/generic.c     2018-01-11 07:57:46.000000000 +0000
5895 +++ linux-4.4.111-vs2.3.9.5/fs/proc/generic.c   2018-01-09 17:29:24.000000000 +0000
5896 @@ -22,6 +22,7 @@
5897  #include <linux/bitops.h>
5898  #include <linux/spinlock.h>
5899  #include <linux/completion.h>
5900 +#include <linux/vserver/inode.h>
5901  #include <asm/uaccess.h>
5902
5903  #include "internal.h"
5904 @@ -66,8 +67,16 @@ static struct proc_dir_entry *pde_subdir
5905                         node = node->rb_left;
5906                 else if (result > 0)
5907                         node = node->rb_right;
5908 -               else
5909 +               else {
5910 +                       if (!vx_hide_check(0, de->vx_flags)) {
5911 +                               vxdprintk(VXD_CBIT(misc, 9),
5912 +                                       VS_Q("%*s")
5913 +                                       " hidden in pde_subdir_find()",
5914 +                                       de->namelen, de->name);
5915 +                               return 0;
5916 +                       }
5917                         return de;
5918 +               }
5919         }
5920         return NULL;
5921  }
5922 @@ -241,6 +250,8 @@ struct dentry *proc_lookup_de(struct pro
5923                         return ERR_PTR(-ENOMEM);
5924                 d_set_d_op(dentry, &simple_dentry_operations);
5925                 d_add(dentry, inode);
5926 +                       /* generic proc entries belong to the host */
5927 +                       i_tag_write(inode, 0);
5928                 return NULL;
5929         }
5930         read_unlock(&proc_subdir_lock);
5931 @@ -287,6 +298,12 @@ int proc_readdir_de(struct proc_dir_entr
5932         do {
5933                 struct proc_dir_entry *next;
5934                 pde_get(de);
5935 +               if (!vx_hide_check(0, de->vx_flags)) {
5936 +                       vxdprintk(VXD_CBIT(misc, 9),
5937 +                               VS_Q("%*s") " hidden in proc_readdir_de()",
5938 +                               de->namelen, de->name);
5939 +                       goto skip;
5940 +               }
5941                 read_unlock(&proc_subdir_lock);
5942                 if (!dir_emit(ctx, de->name, de->namelen,
5943                             de->low_ino, de->mode >> 12)) {
5944 @@ -294,6 +311,7 @@ int proc_readdir_de(struct proc_dir_entr
5945                         return 0;
5946                 }
5947                 read_lock(&proc_subdir_lock);
5948 +       skip:
5949                 ctx->pos++;
5950                 next = pde_subdir_next(de);
5951                 pde_put(de);
5952 @@ -387,6 +405,7 @@ static struct proc_dir_entry *__proc_cre
5953         ent->mode = mode;
5954         ent->nlink = nlink;
5955         ent->subdir = RB_ROOT;
5956 +       ent->vx_flags = IATTR_PROC_DEFAULT;
5957         atomic_set(&ent->count, 1);
5958         spin_lock_init(&ent->pde_unload_lock);
5959         INIT_LIST_HEAD(&ent->pde_openers);
5960 @@ -411,7 +430,8 @@ struct proc_dir_entry *proc_symlink(cons
5961                                 kfree(ent->data);
5962                                 kfree(ent);
5963                                 ent = NULL;
5964 -                       }
5965 +                       } else
5966 +                               ent->vx_flags = IATTR_PROC_SYMLINK;
5967                 } else {
5968                         kfree(ent);
5969                         ent = NULL;
5970 diff -NurpP --minimal linux-4.4.111/fs/proc/inode.c linux-4.4.111-vs2.3.9.5/fs/proc/inode.c
5971 --- linux-4.4.111/fs/proc/inode.c       2015-10-29 09:21:39.000000000 +0000
5972 +++ linux-4.4.111-vs2.3.9.5/fs/proc/inode.c     2018-01-09 16:36:32.000000000 +0000
5973 @@ -431,6 +431,8 @@ struct inode *proc_get_inode(struct supe
5974                         inode->i_uid = de->uid;
5975                         inode->i_gid = de->gid;
5976                 }
5977 +               if (de->vx_flags)
5978 +                       PROC_I(inode)->vx_flags = de->vx_flags;
5979                 if (de->size)
5980                         inode->i_size = de->size;
5981                 if (de->nlink)
5982 diff -NurpP --minimal linux-4.4.111/fs/proc/internal.h linux-4.4.111-vs2.3.9.5/fs/proc/internal.h
5983 --- linux-4.4.111/fs/proc/internal.h    2015-10-29 09:21:39.000000000 +0000
5984 +++ linux-4.4.111-vs2.3.9.5/fs/proc/internal.h  2018-01-09 16:36:32.000000000 +0000
5985 @@ -14,6 +14,7 @@
5986  #include <linux/spinlock.h>
5987  #include <linux/atomic.h>
5988  #include <linux/binfmts.h>
5989 +#include <linux/vs_pid.h>
5990
5991  struct ctl_table_header;
5992  struct mempolicy;
5993 @@ -34,6 +35,7 @@ struct proc_dir_entry {
5994         nlink_t nlink;
5995         kuid_t uid;
5996         kgid_t gid;
5997 +       int vx_flags;
5998         loff_t size;
5999         const struct inode_operations *proc_iops;
6000         const struct file_operations *proc_fops;
6001 @@ -51,15 +53,22 @@ struct proc_dir_entry {
6002         char name[];
6003  };
6004
6005 +struct vx_info;
6006 +struct nx_info;
6007 +
6008  union proc_op {
6009         int (*proc_get_link)(struct dentry *, struct path *);
6010         int (*proc_show)(struct seq_file *m,
6011                 struct pid_namespace *ns, struct pid *pid,
6012                 struct task_struct *task);
6013 +       int (*proc_vs_read)(char *page);
6014 +       int (*proc_vxi_read)(struct vx_info *vxi, char *page);
6015 +       int (*proc_nxi_read)(struct nx_info *nxi, char *page);
6016  };
6017
6018  struct proc_inode {
6019         struct pid *pid;
6020 +       int vx_flags;
6021         int fd;
6022         union proc_op op;
6023         struct proc_dir_entry *pde;
6024 @@ -92,11 +101,16 @@ static inline struct pid *proc_pid(struc
6025         return PROC_I(inode)->pid;
6026  }
6027
6028 -static inline struct task_struct *get_proc_task(struct inode *inode)
6029 +static inline struct task_struct *get_proc_task_real(struct inode *inode)
6030  {
6031         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
6032  }
6033
6034 +static inline struct task_struct *get_proc_task(struct inode *inode)
6035 +{
6036 +       return vx_get_proc_task(inode, proc_pid(inode));
6037 +}
6038 +
6039  static inline int task_dumpable(struct task_struct *task)
6040  {
6041         int dumpable = 0;
6042 @@ -155,6 +169,8 @@ extern int proc_pid_status(struct seq_fi
6043                            struct pid *, struct task_struct *);
6044  extern int proc_pid_statm(struct seq_file *, struct pid_namespace *,
6045                           struct pid *, struct task_struct *);
6046 +extern int proc_pid_nsproxy(struct seq_file *m, struct pid_namespace *ns,
6047 +                           struct pid *pid, struct task_struct *task);
6048
6049  /*
6050   * base.c
6051 diff -NurpP --minimal linux-4.4.111/fs/proc/loadavg.c linux-4.4.111-vs2.3.9.5/fs/proc/loadavg.c
6052 --- linux-4.4.111/fs/proc/loadavg.c     2015-04-12 22:12:50.000000000 +0000
6053 +++ linux-4.4.111-vs2.3.9.5/fs/proc/loadavg.c   2018-01-09 16:36:32.000000000 +0000
6054 @@ -12,15 +12,27 @@
6055
6056  static int loadavg_proc_show(struct seq_file *m, void *v)
6057  {
6058 +       unsigned long running;
6059 +       unsigned int threads;
6060         unsigned long avnrun[3];
6061
6062         get_avenrun(avnrun, FIXED_1/200, 0);
6063
6064 +       if (vx_flags(VXF_VIRT_LOAD, 0)) {
6065 +               struct vx_info *vxi = current_vx_info();
6066 +
6067 +               running = atomic_read(&vxi->cvirt.nr_running);
6068 +               threads = atomic_read(&vxi->cvirt.nr_threads);
6069 +       } else {
6070 +               running = nr_running();
6071 +               threads = nr_threads;
6072 +       }
6073 +
6074         seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d\n",
6075                 LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
6076                 LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
6077                 LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),
6078 -               nr_running(), nr_threads,
6079 +               running, threads,
6080                 task_active_pid_ns(current)->last_pid);
6081         return 0;
6082  }
6083 diff -NurpP --minimal linux-4.4.111/fs/proc/meminfo.c linux-4.4.111-vs2.3.9.5/fs/proc/meminfo.c
6084 --- linux-4.4.111/fs/proc/meminfo.c     2016-07-05 04:15:09.000000000 +0000
6085 +++ linux-4.4.111-vs2.3.9.5/fs/proc/meminfo.c   2018-01-12 18:43:53.000000000 +0000
6086 @@ -43,7 +43,8 @@ static int meminfo_proc_show(struct seq_
6087         si_swapinfo(&i);
6088         committed = percpu_counter_read_positive(&vm_committed_as);
6089
6090 -       cached = global_page_state(NR_FILE_PAGES) -
6091 +       cached = vx_flags(VXF_VIRT_MEM, 0) ?
6092 +               vx_vsi_cached(&i) : global_page_state(NR_FILE_PAGES) -
6093                         total_swapcache_pages() - i.bufferram;
6094         if (cached < 0)
6095                 cached = 0;
6096 @@ -70,13 +71,16 @@ static int meminfo_proc_show(struct seq_
6097          */
6098         pagecache = pages[LRU_ACTIVE_FILE] + pages[LRU_INACTIVE_FILE];
6099         pagecache -= min(pagecache / 2, wmark_low);
6100 -       available += pagecache;
6101 +
6102 +       if (!vx_flags(VXF_VIRT_MEM, 0))
6103 +               available += pagecache;
6104
6105         /*
6106          * Part of the reclaimable slab consists of items that are in use,
6107          * and cannot be freed. Cap this estimate at the low watermark.
6108          */
6109 -       available += global_page_state(NR_SLAB_RECLAIMABLE) -
6110 +       if (!vx_flags(VXF_VIRT_MEM, 0))
6111 +               available += global_page_state(NR_SLAB_RECLAIMABLE) -
6112                      min(global_page_state(NR_SLAB_RECLAIMABLE) / 2, wmark_low);
6113
6114         if (available < 0)
6115 diff -NurpP --minimal linux-4.4.111/fs/proc/root.c linux-4.4.111-vs2.3.9.5/fs/proc/root.c
6116 --- linux-4.4.111/fs/proc/root.c        2018-01-11 07:57:46.000000000 +0000
6117 +++ linux-4.4.111-vs2.3.9.5/fs/proc/root.c      2018-01-09 16:36:32.000000000 +0000
6118 @@ -20,9 +20,14 @@
6119  #include <linux/mount.h>
6120  #include <linux/pid_namespace.h>
6121  #include <linux/parser.h>
6122 +#include <linux/vserver/inode.h>
6123
6124  #include "internal.h"
6125
6126 +struct proc_dir_entry *proc_virtual;
6127 +
6128 +extern void proc_vx_init(void);
6129 +
6130  static int proc_test_super(struct super_block *sb, void *data)
6131  {
6132         return sb->s_fs_info == data;
6133 @@ -113,7 +118,8 @@ static struct dentry *proc_mount(struct
6134                 options = data;
6135
6136                 /* Does the mounter have privilege over the pid namespace? */
6137 -               if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN))
6138 +               if (!vx_ns_capable(ns->user_ns,
6139 +                       CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
6140                         return ERR_PTR(-EPERM);
6141         }
6142
6143 @@ -196,6 +202,7 @@ void __init proc_root_init(void)
6144         proc_tty_init();
6145         proc_mkdir("bus", NULL);
6146         proc_sys_init();
6147 +       proc_vx_init();
6148  }
6149
6150  static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat
6151 @@ -257,6 +264,7 @@ struct proc_dir_entry proc_root = {
6152         .proc_iops      = &proc_root_inode_operations,
6153         .proc_fops      = &proc_root_operations,
6154         .parent         = &proc_root,
6155 +       .vx_flags       = IATTR_ADMIN | IATTR_WATCH,
6156         .subdir         = RB_ROOT,
6157         .name           = "/proc",
6158  };
6159 diff -NurpP --minimal linux-4.4.111/fs/proc/self.c linux-4.4.111-vs2.3.9.5/fs/proc/self.c
6160 --- linux-4.4.111/fs/proc/self.c        2015-10-29 09:21:39.000000000 +0000
6161 +++ linux-4.4.111-vs2.3.9.5/fs/proc/self.c      2018-01-09 16:36:32.000000000 +0000
6162 @@ -1,6 +1,7 @@
6163  #include <linux/sched.h>
6164  #include <linux/slab.h>
6165  #include <linux/pid_namespace.h>
6166 +#include <linux/vserver/inode.h>
6167  #include "internal.h"
6168
6169  /*
6170 @@ -52,6 +53,8 @@ int proc_setup_self(struct super_block *
6171         self = d_alloc_name(s->s_root, "self");
6172         if (self) {
6173                 struct inode *inode = new_inode_pseudo(s);
6174 +
6175 +               // self->vx_flags = IATTR_PROC_SYMLINK;
6176                 if (inode) {
6177                         inode->i_ino = self_inum;
6178                         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
6179 diff -NurpP --minimal linux-4.4.111/fs/proc/stat.c linux-4.4.111-vs2.3.9.5/fs/proc/stat.c
6180 --- linux-4.4.111/fs/proc/stat.c        2015-04-12 22:12:50.000000000 +0000
6181 +++ linux-4.4.111-vs2.3.9.5/fs/proc/stat.c      2018-01-09 16:36:32.000000000 +0000
6182 @@ -9,8 +9,10 @@
6183  #include <linux/slab.h>
6184  #include <linux/time.h>
6185  #include <linux/irqnr.h>
6186 +#include <linux/vserver/cvirt.h>
6187  #include <linux/cputime.h>
6188  #include <linux/tick.h>
6189 +#include <linux/cpuset.h>
6190
6191  #ifndef arch_irq_stat_cpu
6192  #define arch_irq_stat_cpu(cpu) 0
6193 @@ -87,14 +89,26 @@ static int show_stat(struct seq_file *p,
6194         u64 sum_softirq = 0;
6195         unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
6196         struct timespec boottime;
6197 +       cpumask_var_t cpus_allowed;
6198 +       bool virt_cpu = vx_flags(VXF_VIRT_CPU, 0);
6199
6200         user = nice = system = idle = iowait =
6201                 irq = softirq = steal = 0;
6202         guest = guest_nice = 0;
6203         getboottime(&boottime);
6204 +
6205 +       if (vx_flags(VXF_VIRT_UPTIME, 0))
6206 +               vx_vsi_boottime(&boottime);
6207 +
6208 +       if (virt_cpu)
6209 +               cpuset_cpus_allowed(current, cpus_allowed);
6210 +
6211         jif = boottime.tv_sec;
6212
6213         for_each_possible_cpu(i) {
6214 +               if (virt_cpu && !cpumask_test_cpu(i, cpus_allowed))
6215 +                       continue;
6216 +
6217                 user += kcpustat_cpu(i).cpustat[CPUTIME_USER];
6218                 nice += kcpustat_cpu(i).cpustat[CPUTIME_NICE];
6219                 system += kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
6220 @@ -131,6 +145,9 @@ static int show_stat(struct seq_file *p,
6221         seq_putc(p, '\n');
6222
6223         for_each_online_cpu(i) {
6224 +               if (virt_cpu && !cpumask_test_cpu(i, cpus_allowed))
6225 +                       continue;
6226 +
6227                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
6228                 user = kcpustat_cpu(i).cpustat[CPUTIME_USER];
6229                 nice = kcpustat_cpu(i).cpustat[CPUTIME_NICE];
6230 diff -NurpP --minimal linux-4.4.111/fs/proc/uptime.c linux-4.4.111-vs2.3.9.5/fs/proc/uptime.c
6231 --- linux-4.4.111/fs/proc/uptime.c      2015-04-12 22:12:50.000000000 +0000
6232 +++ linux-4.4.111-vs2.3.9.5/fs/proc/uptime.c    2018-01-09 16:36:32.000000000 +0000
6233 @@ -5,6 +5,7 @@
6234  #include <linux/seq_file.h>
6235  #include <linux/time.h>
6236  #include <linux/kernel_stat.h>
6237 +#include <linux/vserver/cvirt.h>
6238  #include <linux/cputime.h>
6239
6240  static int uptime_proc_show(struct seq_file *m, void *v)
6241 @@ -24,6 +25,10 @@ static int uptime_proc_show(struct seq_f
6242         nsec = cputime64_to_jiffies64(idletime) * TICK_NSEC;
6243         idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
6244         idle.tv_nsec = rem;
6245 +
6246 +       if (vx_flags(VXF_VIRT_UPTIME, 0))
6247 +               vx_vsi_uptime(&uptime, &idle);
6248 +
6249         seq_printf(m, "%lu.%02lu %lu.%02lu\n",
6250                         (unsigned long) uptime.tv_sec,
6251                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
6252 diff -NurpP --minimal linux-4.4.111/fs/proc_namespace.c linux-4.4.111-vs2.3.9.5/fs/proc_namespace.c
6253 --- linux-4.4.111/fs/proc_namespace.c   2018-01-11 07:57:46.000000000 +0000
6254 +++ linux-4.4.111-vs2.3.9.5/fs/proc_namespace.c 2018-01-09 16:36:32.000000000 +0000
6255 @@ -46,6 +46,8 @@ static int show_sb_opts(struct seq_file
6256                 { MS_DIRSYNC, ",dirsync" },
6257                 { MS_MANDLOCK, ",mand" },
6258                 { MS_LAZYTIME, ",lazytime" },
6259 +               { MS_TAGGED, ",tag" },
6260 +               { MS_NOTAGCHECK, ",notagcheck" },
6261                 { 0, NULL }
6262         };
6263         const struct proc_fs_info *fs_infop;
6264 @@ -82,6 +84,38 @@ static inline void mangle(struct seq_fil
6265         seq_escape(m, s, " \t\n\\");
6266  }
6267
6268 +#ifdef CONFIG_VSERVER_EXTRA_MNT_CHECK
6269 +
6270 +static int mnt_is_reachable(struct vfsmount *vfsmnt)
6271 +{
6272 +       struct path root;
6273 +       struct dentry *point;
6274 +       struct mount *mnt = real_mount(vfsmnt);
6275 +       struct mount *root_mnt;
6276 +       int ret;
6277 +
6278 +       if (mnt == mnt->mnt_ns->root)
6279 +               return 1;
6280 +
6281 +       rcu_read_lock();
6282 +       root = current->fs->root;
6283 +       root_mnt = real_mount(root.mnt);
6284 +       point = root.dentry;
6285 +
6286 +       while ((mnt != mnt->mnt_parent) && (mnt != root_mnt)) {
6287 +               point = mnt->mnt_mountpoint;
6288 +               mnt = mnt->mnt_parent;
6289 +       }
6290 +       rcu_read_unlock();
6291 +
6292 +       ret = (mnt == root_mnt) && is_subdir(point, root.dentry);
6293 +       return ret;
6294 +}
6295 +
6296 +#else
6297 +#define        mnt_is_reachable(v)     (1)
6298 +#endif
6299 +
6300  static void show_type(struct seq_file *m, struct super_block *sb)
6301  {
6302         mangle(m, sb->s_type->name);
6303 @@ -99,6 +133,17 @@ static int show_vfsmnt(struct seq_file *
6304         struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
6305         struct super_block *sb = mnt_path.dentry->d_sb;
6306
6307 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6308 +               return SEQ_SKIP;
6309 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6310 +               return SEQ_SKIP;
6311 +
6312 +       if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
6313 +               mnt == current->fs->root.mnt) {
6314 +               seq_puts(m, "/dev/root / ");
6315 +               goto type;
6316 +       }
6317 +
6318         if (sb->s_op->show_devname) {
6319                 err = sb->s_op->show_devname(m, mnt_path.dentry);
6320                 if (err)
6321 @@ -112,6 +157,7 @@ static int show_vfsmnt(struct seq_file *
6322         if (err)
6323                 goto out;
6324         seq_putc(m, ' ');
6325 +type:
6326         show_type(m, sb);
6327         seq_puts(m, __mnt_is_readonly(mnt) ? " ro" : " rw");
6328         err = show_sb_opts(m, sb);
6329 @@ -133,6 +179,11 @@ static int show_mountinfo(struct seq_fil
6330         struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
6331         int err = 0;
6332
6333 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6334 +               return SEQ_SKIP;
6335 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6336 +               return SEQ_SKIP;
6337 +
6338         seq_printf(m, "%i %i %u:%u ", r->mnt_id, r->mnt_parent->mnt_id,
6339                    MAJOR(sb->s_dev), MINOR(sb->s_dev));
6340         if (sb->s_op->show_path)
6341 @@ -193,6 +244,17 @@ static int show_vfsstat(struct seq_file
6342         struct super_block *sb = mnt_path.dentry->d_sb;
6343         int err = 0;
6344
6345 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6346 +               return SEQ_SKIP;
6347 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6348 +               return SEQ_SKIP;
6349 +
6350 +       if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
6351 +               mnt == current->fs->root.mnt) {
6352 +               seq_puts(m, "device /dev/root mounted on / ");
6353 +               goto type;
6354 +       }
6355 +
6356         /* device */
6357         if (sb->s_op->show_devname) {
6358                 seq_puts(m, "device ");
6359 @@ -214,7 +276,7 @@ static int show_vfsstat(struct seq_file
6360         if (err)
6361                 goto out;
6362         seq_putc(m, ' ');
6363 -
6364 +type:
6365         /* file system type */
6366         seq_puts(m, "with fstype ");
6367         show_type(m, sb);
6368 diff -NurpP --minimal linux-4.4.111/fs/quota/dquot.c linux-4.4.111-vs2.3.9.5/fs/quota/dquot.c
6369 --- linux-4.4.111/fs/quota/dquot.c      2018-01-11 07:57:46.000000000 +0000
6370 +++ linux-4.4.111-vs2.3.9.5/fs/quota/dquot.c    2018-01-09 16:36:32.000000000 +0000
6371 @@ -1643,6 +1643,9 @@ int __dquot_alloc_space(struct inode *in
6372         int reserve = flags & DQUOT_SPACE_RESERVE;
6373         struct dquot **dquots;
6374
6375 +       if ((ret = dl_alloc_space(inode, number)))
6376 +               return ret;
6377 +
6378         if (!dquot_active(inode)) {
6379                 inode_incr_space(inode, number, reserve);
6380                 goto out;
6381 @@ -1695,6 +1698,9 @@ int dquot_alloc_inode(struct inode *inod
6382         struct dquot_warn warn[MAXQUOTAS];
6383         struct dquot * const *dquots;
6384
6385 +       if ((ret = dl_alloc_inode(inode)))
6386 +               return ret;
6387 +
6388         if (!dquot_active(inode))
6389                 return 0;
6390         for (cnt = 0; cnt < MAXQUOTAS; cnt++)
6391 @@ -1797,6 +1803,8 @@ void __dquot_free_space(struct inode *in
6392         struct dquot **dquots;
6393         int reserve = flags & DQUOT_SPACE_RESERVE, index;
6394
6395 +       dl_free_space(inode, number);
6396 +
6397         if (!dquot_active(inode)) {
6398                 inode_decr_space(inode, number, reserve);
6399                 return;
6400 @@ -1841,6 +1849,8 @@ void dquot_free_inode(struct inode *inod
6401         struct dquot * const *dquots;
6402         int index;
6403
6404 +       dl_free_inode(inode);
6405 +
6406         if (!dquot_active(inode))
6407                 return;
6408
6409 diff -NurpP --minimal linux-4.4.111/fs/quota/quota.c linux-4.4.111-vs2.3.9.5/fs/quota/quota.c
6410 --- linux-4.4.111/fs/quota/quota.c      2016-07-05 04:12:34.000000000 +0000
6411 +++ linux-4.4.111-vs2.3.9.5/fs/quota/quota.c    2018-01-09 16:36:32.000000000 +0000
6412 @@ -8,6 +8,7 @@
6413  #include <linux/fs.h>
6414  #include <linux/namei.h>
6415  #include <linux/slab.h>
6416 +#include <linux/vs_context.h>
6417  #include <asm/current.h>
6418  #include <linux/uaccess.h>
6419  #include <linux/kernel.h>
6420 @@ -38,7 +39,7 @@ static int check_quotactl_permission(str
6421                         break;
6422                 /*FALLTHROUGH*/
6423         default:
6424 -               if (!capable(CAP_SYS_ADMIN))
6425 +               if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
6426                         return -EPERM;
6427         }
6428
6429 @@ -702,6 +703,46 @@ static int do_quotactl(struct super_bloc
6430
6431  #ifdef CONFIG_BLOCK
6432
6433 +#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
6434 +
6435 +#include <linux/vroot.h>
6436 +#include <linux/major.h>
6437 +#include <linux/module.h>
6438 +#include <linux/kallsyms.h>
6439 +#include <linux/vserver/debug.h>
6440 +
6441 +static vroot_grb_func *vroot_get_real_bdev = NULL;
6442 +
6443 +static DEFINE_SPINLOCK(vroot_grb_lock);
6444 +
6445 +int register_vroot_grb(vroot_grb_func *func) {
6446 +       int ret = -EBUSY;
6447 +
6448 +       spin_lock(&vroot_grb_lock);
6449 +       if (!vroot_get_real_bdev) {
6450 +               vroot_get_real_bdev = func;
6451 +               ret = 0;
6452 +       }
6453 +       spin_unlock(&vroot_grb_lock);
6454 +       return ret;
6455 +}
6456 +EXPORT_SYMBOL(register_vroot_grb);
6457 +
6458 +int unregister_vroot_grb(vroot_grb_func *func) {
6459 +       int ret = -EINVAL;
6460 +
6461 +       spin_lock(&vroot_grb_lock);
6462 +       if (vroot_get_real_bdev) {
6463 +               vroot_get_real_bdev = NULL;
6464 +               ret = 0;
6465 +       }
6466 +       spin_unlock(&vroot_grb_lock);
6467 +       return ret;
6468 +}
6469 +EXPORT_SYMBOL(unregister_vroot_grb);
6470 +
6471 +#endif
6472 +
6473  /* Return 1 if 'cmd' will block on frozen filesystem */
6474  static int quotactl_cmd_write(int cmd)
6475  {
6476 @@ -737,6 +778,22 @@ static struct super_block *quotactl_bloc
6477         putname(tmp);
6478         if (IS_ERR(bdev))
6479                 return ERR_CAST(bdev);
6480 +#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
6481 +       if (bdev && bdev->bd_inode &&
6482 +               imajor(bdev->bd_inode) == VROOT_MAJOR) {
6483 +               struct block_device *bdnew = (void *)-EINVAL;
6484 +
6485 +               if (vroot_get_real_bdev)
6486 +                       bdnew = vroot_get_real_bdev(bdev);
6487 +               else
6488 +                       vxdprintk(VXD_CBIT(misc, 0),
6489 +                                       "vroot_get_real_bdev not set");
6490 +               bdput(bdev);
6491 +               if (IS_ERR(bdnew))
6492 +                       return ERR_PTR(PTR_ERR(bdnew));
6493 +               bdev = bdnew;
6494 +       }
6495 +#endif
6496         if (quotactl_cmd_write(cmd))
6497                 sb = get_super_thawed(bdev);
6498         else
6499 diff -NurpP --minimal linux-4.4.111/fs/stat.c linux-4.4.111-vs2.3.9.5/fs/stat.c
6500 --- linux-4.4.111/fs/stat.c     2018-01-11 07:57:46.000000000 +0000
6501 +++ linux-4.4.111-vs2.3.9.5/fs/stat.c   2018-01-09 16:36:32.000000000 +0000
6502 @@ -26,6 +26,7 @@ void generic_fillattr(struct inode *inod
6503         stat->nlink = inode->i_nlink;
6504         stat->uid = inode->i_uid;
6505         stat->gid = inode->i_gid;
6506 +       stat->tag = inode->i_tag;
6507         stat->rdev = inode->i_rdev;
6508         stat->size = i_size_read(inode);
6509         stat->atime = inode->i_atime;
6510 diff -NurpP --minimal linux-4.4.111/fs/statfs.c linux-4.4.111-vs2.3.9.5/fs/statfs.c
6511 --- linux-4.4.111/fs/statfs.c   2015-04-12 22:12:50.000000000 +0000
6512 +++ linux-4.4.111-vs2.3.9.5/fs/statfs.c 2018-01-09 16:36:32.000000000 +0000
6513 @@ -7,6 +7,8 @@
6514  #include <linux/statfs.h>
6515  #include <linux/security.h>
6516  #include <linux/uaccess.h>
6517 +#include <linux/vs_base.h>
6518 +#include <linux/vs_dlimit.h>
6519  #include "internal.h"
6520
6521  static int flags_by_mnt(int mnt_flags)
6522 @@ -60,6 +62,8 @@ static int statfs_by_dentry(struct dentr
6523         retval = dentry->d_sb->s_op->statfs(dentry, buf);
6524         if (retval == 0 && buf->f_frsize == 0)
6525                 buf->f_frsize = buf->f_bsize;
6526 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
6527 +               vx_vsi_statfs(dentry->d_sb, buf);
6528         return retval;
6529  }
6530
6531 diff -NurpP --minimal linux-4.4.111/fs/super.c linux-4.4.111-vs2.3.9.5/fs/super.c
6532 --- linux-4.4.111/fs/super.c    2018-01-11 07:57:46.000000000 +0000
6533 +++ linux-4.4.111-vs2.3.9.5/fs/super.c  2018-01-09 16:36:32.000000000 +0000
6534 @@ -33,6 +33,8 @@
6535  #include <linux/cleancache.h>
6536  #include <linux/fsnotify.h>
6537  #include <linux/lockdep.h>
6538 +#include <linux/magic.h>
6539 +#include <linux/vs_context.h>
6540  #include "internal.h"
6541
6542
6543 @@ -1131,6 +1133,13 @@ mount_fs(struct file_system_type *type,
6544         WARN_ON(!sb->s_bdi);
6545         sb->s_flags |= MS_BORN;
6546
6547 +       error = -EPERM;
6548 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT) &&
6549 +               !sb->s_bdev &&
6550 +               (sb->s_magic != PROC_SUPER_MAGIC) &&
6551 +               (sb->s_magic != DEVPTS_SUPER_MAGIC))
6552 +               goto out_sb;
6553 +
6554         error = security_sb_kern_mount(sb, flags, secdata);
6555         if (error)
6556                 goto out_sb;
6557 diff -NurpP --minimal linux-4.4.111/fs/utimes.c linux-4.4.111-vs2.3.9.5/fs/utimes.c
6558 --- linux-4.4.111/fs/utimes.c   2018-01-11 07:57:46.000000000 +0000
6559 +++ linux-4.4.111-vs2.3.9.5/fs/utimes.c 2018-01-09 16:36:32.000000000 +0000
6560 @@ -8,6 +8,8 @@
6561  #include <linux/stat.h>
6562  #include <linux/utime.h>
6563  #include <linux/syscalls.h>
6564 +#include <linux/mount.h>
6565 +#include <linux/vs_cowbl.h>
6566  #include <asm/uaccess.h>
6567  #include <asm/unistd.h>
6568
6569 @@ -52,13 +54,19 @@ static int utimes_common(struct path *pa
6570  {
6571         int error;
6572         struct iattr newattrs;
6573 -       struct inode *inode = path->dentry->d_inode;
6574         struct inode *delegated_inode = NULL;
6575 +       struct inode *inode;
6576 +
6577 +       error = cow_check_and_break(path);
6578 +       if (error)
6579 +               goto out;
6580
6581         error = mnt_want_write(path->mnt);
6582         if (error)
6583                 goto out;
6584
6585 +       inode = path->dentry->d_inode;
6586 +
6587         if (times && times[0].tv_nsec == UTIME_NOW &&
6588                      times[1].tv_nsec == UTIME_NOW)
6589                 times = NULL;
6590 diff -NurpP --minimal linux-4.4.111/fs/xattr.c linux-4.4.111-vs2.3.9.5/fs/xattr.c
6591 --- linux-4.4.111/fs/xattr.c    2018-01-11 07:57:46.000000000 +0000
6592 +++ linux-4.4.111-vs2.3.9.5/fs/xattr.c  2018-01-09 16:36:32.000000000 +0000
6593 @@ -21,6 +21,7 @@
6594  #include <linux/audit.h>
6595  #include <linux/vmalloc.h>
6596  #include <linux/posix_acl_xattr.h>
6597 +#include <linux/mount.h>
6598
6599  #include <asm/uaccess.h>
6600
6601 @@ -52,7 +53,7 @@ xattr_permission(struct inode *inode, co
6602          * The trusted.* namespace can only be accessed by privileged users.
6603          */
6604         if (!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) {
6605 -               if (!capable(CAP_SYS_ADMIN))
6606 +               if (!vx_capable(CAP_SYS_ADMIN, VXC_FS_TRUSTED))
6607                         return (mask & MAY_WRITE) ? -EPERM : -ENODATA;
6608                 return 0;
6609         }
6610 diff -NurpP --minimal linux-4.4.111/include/linux/capability.h linux-4.4.111-vs2.3.9.5/include/linux/capability.h
6611 --- linux-4.4.111/include/linux/capability.h    2018-01-11 07:57:47.000000000 +0000
6612 +++ linux-4.4.111-vs2.3.9.5/include/linux/capability.h  2018-01-09 16:36:32.000000000 +0000
6613 @@ -77,7 +77,8 @@ extern const kernel_cap_t __cap_init_eff
6614  #else /* HAND-CODED capability initializers */
6615
6616  #define CAP_LAST_U32                   ((_KERNEL_CAPABILITY_U32S) - 1)
6617 -#define CAP_LAST_U32_VALID_MASK                (CAP_TO_MASK(CAP_LAST_CAP + 1) -1)
6618 +#define CAP_LAST_U32_VALID_MASK                ((CAP_TO_MASK(CAP_LAST_CAP + 1) -1) \
6619 +                                       | CAP_TO_MASK(CAP_CONTEXT))
6620
6621  # define CAP_EMPTY_SET    ((kernel_cap_t){{ 0, 0 }})
6622  # define CAP_FULL_SET     ((kernel_cap_t){{ ~0, CAP_LAST_U32_VALID_MASK }})
6623 diff -NurpP --minimal linux-4.4.111/include/linux/cred.h linux-4.4.111-vs2.3.9.5/include/linux/cred.h
6624 --- linux-4.4.111/include/linux/cred.h  2018-01-11 07:57:47.000000000 +0000
6625 +++ linux-4.4.111-vs2.3.9.5/include/linux/cred.h        2018-01-11 08:03:00.000000000 +0000
6626 @@ -161,6 +161,7 @@ extern void exit_creds(struct task_struc
6627  extern int copy_creds(struct task_struct *, unsigned long);
6628  extern const struct cred *get_task_cred(struct task_struct *);
6629  extern struct cred *cred_alloc_blank(void);
6630 +extern struct cred *__prepare_creds(const struct cred *);
6631  extern struct cred *prepare_creds(void);
6632  extern struct cred *prepare_exec_creds(void);
6633  extern int commit_creds(struct cred *);
6634 @@ -221,6 +222,31 @@ static inline bool cap_ambient_invariant
6635                                           cred->cap_inheritable));
6636  }
6637
6638 +static inline void set_cred_subscribers(struct cred *cred, int n)
6639 +{
6640 +#ifdef CONFIG_DEBUG_CREDENTIALS
6641 +       atomic_set(&cred->subscribers, n);
6642 +#endif
6643 +}
6644 +
6645 +static inline int read_cred_subscribers(const struct cred *cred)
6646 +{
6647 +#ifdef CONFIG_DEBUG_CREDENTIALS
6648 +       return atomic_read(&cred->subscribers);
6649 +#else
6650 +       return 0;
6651 +#endif
6652 +}
6653 +
6654 +static inline void alter_cred_subscribers(const struct cred *_cred, int n)
6655 +{
6656 +#ifdef CONFIG_DEBUG_CREDENTIALS
6657 +       struct cred *cred = (struct cred *) _cred;
6658 +
6659 +       atomic_add(n, &cred->subscribers);
6660 +#endif
6661 +}
6662 +
6663  /**
6664   * get_new_cred - Get a reference on a new set of credentials
6665   * @cred: The new credentials to reference
6666 diff -NurpP --minimal linux-4.4.111/include/linux/dcache.h linux-4.4.111-vs2.3.9.5/include/linux/dcache.h
6667 --- linux-4.4.111/include/linux/dcache.h        2018-01-11 07:57:47.000000000 +0000
6668 +++ linux-4.4.111-vs2.3.9.5/include/linux/dcache.h      2018-01-09 16:36:32.000000000 +0000
6669 @@ -10,6 +10,7 @@
6670  #include <linux/cache.h>
6671  #include <linux/rcupdate.h>
6672  #include <linux/lockref.h>
6673 +// #include <linux/vs_limit.h>
6674
6675  struct path;
6676  struct vfsmount;
6677 @@ -351,8 +352,10 @@ extern char *dentry_path(struct dentry *
6678   */
6679  static inline struct dentry *dget_dlock(struct dentry *dentry)
6680  {
6681 -       if (dentry)
6682 +       if (dentry) {
6683                 dentry->d_lockref.count++;
6684 +               // vx_dentry_inc(dentry);
6685 +       }
6686         return dentry;
6687  }
6688
6689 diff -NurpP --minimal linux-4.4.111/include/linux/devpts_fs.h linux-4.4.111-vs2.3.9.5/include/linux/devpts_fs.h
6690 --- linux-4.4.111/include/linux/devpts_fs.h     2018-01-11 07:57:47.000000000 +0000
6691 +++ linux-4.4.111-vs2.3.9.5/include/linux/devpts_fs.h   2018-01-09 16:36:32.000000000 +0000
6692 @@ -35,5 +35,4 @@ void devpts_pty_kill(struct inode *inode
6693
6694  #endif
6695
6696 -
6697  #endif /* _LINUX_DEVPTS_FS_H */
6698 diff -NurpP --minimal linux-4.4.111/include/linux/fs.h linux-4.4.111-vs2.3.9.5/include/linux/fs.h
6699 --- linux-4.4.111/include/linux/fs.h    2018-01-11 07:57:47.000000000 +0000
6700 +++ linux-4.4.111-vs2.3.9.5/include/linux/fs.h  2018-01-09 16:43:56.000000000 +0000
6701 @@ -227,6 +227,7 @@ typedef void (dax_iodone_t)(struct buffe
6702  #define ATTR_OPEN      (1 << 15) /* Truncating from open(O_TRUNC) */
6703  #define ATTR_TIMES_SET (1 << 16)
6704  #define ATTR_TOUCH     (1 << 17)
6705 +#define ATTR_TAG       (1 << 18)
6706
6707  /*
6708   * Whiteout is represented by a char device.  The following constants define the
6709 @@ -249,6 +250,7 @@ struct iattr {
6710         umode_t         ia_mode;
6711         kuid_t          ia_uid;
6712         kgid_t          ia_gid;
6713 +       ktag_t          ia_tag;
6714         loff_t          ia_size;
6715         struct timespec ia_atime;
6716         struct timespec ia_mtime;
6717 @@ -587,7 +589,9 @@ struct inode {
6718         unsigned short          i_opflags;
6719         kuid_t                  i_uid;
6720         kgid_t                  i_gid;
6721 -       unsigned int            i_flags;
6722 +       ktag_t                  i_tag;
6723 +       unsigned short          i_flags;
6724 +       unsigned short          i_vflags;
6725
6726  #ifdef CONFIG_FS_POSIX_ACL
6727         struct posix_acl        *i_acl;
6728 @@ -616,6 +620,7 @@ struct inode {
6729                 unsigned int __i_nlink;
6730         };
6731         dev_t                   i_rdev;
6732 +       dev_t                   i_mdev;
6733         loff_t                  i_size;
6734         struct timespec         i_atime;
6735         struct timespec         i_mtime;
6736 @@ -814,6 +819,11 @@ static inline gid_t i_gid_read(const str
6737         return from_kgid(&init_user_ns, inode->i_gid);
6738  }
6739
6740 +static inline vtag_t i_tag_read(const struct inode *inode)
6741 +{
6742 +       return from_ktag(&init_user_ns, inode->i_tag);
6743 +}
6744 +
6745  static inline void i_uid_write(struct inode *inode, uid_t uid)
6746  {
6747         inode->i_uid = make_kuid(&init_user_ns, uid);
6748 @@ -824,14 +834,19 @@ static inline void i_gid_write(struct in
6749         inode->i_gid = make_kgid(&init_user_ns, gid);
6750  }
6751
6752 +static inline void i_tag_write(struct inode *inode, vtag_t tag)
6753 +{
6754 +       inode->i_tag = make_ktag(&init_user_ns, tag);
6755 +}
6756 +
6757  static inline unsigned iminor(const struct inode *inode)
6758  {
6759 -       return MINOR(inode->i_rdev);
6760 +       return MINOR(inode->i_mdev);
6761  }
6762
6763  static inline unsigned imajor(const struct inode *inode)
6764  {
6765 -       return MAJOR(inode->i_rdev);
6766 +       return MAJOR(inode->i_mdev);
6767  }
6768
6769  extern struct block_device *I_BDEV(struct inode *inode);
6770 @@ -888,6 +903,7 @@ struct file {
6771         loff_t                  f_pos;
6772         struct fown_struct      f_owner;
6773         const struct cred       *f_cred;
6774 +       vxid_t                  f_xid;
6775         struct file_ra_state    f_ra;
6776
6777         u64                     f_version;
6778 @@ -1022,6 +1038,7 @@ struct file_lock {
6779         struct file *fl_file;
6780         loff_t fl_start;
6781         loff_t fl_end;
6782 +       vxid_t fl_xid;
6783
6784         struct fasync_struct *  fl_fasync; /* for lease break notifications */
6785         /* for lease breaks: */
6786 @@ -1698,6 +1715,7 @@ struct inode_operations {
6787         ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
6788         ssize_t (*listxattr) (struct dentry *, char *, size_t);
6789         int (*removexattr) (struct dentry *, const char *);
6790 +       int (*sync_flags) (struct inode *, int, int);
6791         int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
6792                       u64 len);
6793         int (*update_time)(struct inode *, struct timespec *, int);
6794 @@ -1712,6 +1730,7 @@ ssize_t rw_copy_check_uvector(int type,
6795                               unsigned long nr_segs, unsigned long fast_segs,
6796                               struct iovec *fast_pointer,
6797                               struct iovec **ret_pointer);
6798 +ssize_t vfs_sendfile(struct file *, struct file *, loff_t *, size_t, loff_t);
6799
6800  extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
6801  extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *);
6802 @@ -1777,6 +1796,14 @@ struct super_operations {
6803  #else
6804  #define S_DAX          0       /* Make all the DAX code disappear */
6805  #endif
6806 +#define S_IXUNLINK     16384   /* Immutable Invert on unlink */
6807 +
6808 +/* Linux-VServer related Inode flags */
6809 +
6810 +#define V_VALID                1
6811 +#define V_XATTR                2
6812 +#define V_BARRIER      4       /* Barrier for chroot() */
6813 +#define V_COW          8       /* Copy on Write */
6814
6815  /*
6816   * Note that nosuid etc flags are inode-specific: setting some file-system
6817 @@ -1801,10 +1828,13 @@ struct super_operations {
6818  #define IS_MANDLOCK(inode)     __IS_FLG(inode, MS_MANDLOCK)
6819  #define IS_NOATIME(inode)      __IS_FLG(inode, MS_RDONLY|MS_NOATIME)
6820  #define IS_I_VERSION(inode)    __IS_FLG(inode, MS_I_VERSION)
6821 +#define IS_TAGGED(inode)       __IS_FLG(inode, MS_TAGGED)
6822
6823  #define IS_NOQUOTA(inode)      ((inode)->i_flags & S_NOQUOTA)
6824  #define IS_APPEND(inode)       ((inode)->i_flags & S_APPEND)
6825  #define IS_IMMUTABLE(inode)    ((inode)->i_flags & S_IMMUTABLE)
6826 +#define IS_IXUNLINK(inode)     ((inode)->i_flags & S_IXUNLINK)
6827 +#define IS_IXORUNLINK(inode)   ((IS_IXUNLINK(inode) ? S_IMMUTABLE : 0) ^ IS_IMMUTABLE(inode))
6828  #define IS_POSIXACL(inode)     __IS_FLG(inode, MS_POSIXACL)
6829
6830  #define IS_DEADDIR(inode)      ((inode)->i_flags & S_DEAD)
6831 @@ -1819,6 +1849,16 @@ struct super_operations {
6832  #define IS_WHITEOUT(inode)     (S_ISCHR(inode->i_mode) && \
6833                                  (inode)->i_rdev == WHITEOUT_DEV)
6834
6835 +#define IS_BARRIER(inode)      (S_ISDIR((inode)->i_mode) && ((inode)->i_vflags & V_BARRIER))
6836 +
6837 +#ifdef CONFIG_VSERVER_COWBL
6838 +#  define IS_COW(inode)                (IS_IXUNLINK(inode) && IS_IMMUTABLE(inode))
6839 +#  define IS_COW_LINK(inode)   (S_ISREG((inode)->i_mode) && ((inode)->i_nlink > 1))
6840 +#else
6841 +#  define IS_COW(inode)                (0)
6842 +#  define IS_COW_LINK(inode)   (0)
6843 +#endif
6844 +
6845  /*
6846   * Inode state bits.  Protected by inode->i_lock
6847   *
6848 @@ -2075,6 +2115,9 @@ extern struct kobject *fs_kobj;
6849  extern int locks_mandatory_locked(struct file *);
6850  extern int locks_mandatory_area(int, struct inode *, struct file *, loff_t, size_t);
6851
6852 +#define ATTR_FLAG_BARRIER      512     /* Barrier for chroot() */
6853 +#define ATTR_FLAG_IXUNLINK     1024    /* Immutable invert on unlink */
6854 +
6855  /*
6856   * Candidates for mandatory locking have the setgid bit set
6857   * but no group execute bit -  an otherwise meaningless combination.
6858 @@ -2830,6 +2873,7 @@ extern int dcache_dir_open(struct inode
6859  extern int dcache_dir_close(struct inode *, struct file *);
6860  extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
6861  extern int dcache_readdir(struct file *, struct dir_context *);
6862 +extern int dcache_readdir_filter(struct file *, struct dir_context *, int (*)(struct dentry *));
6863  extern int simple_setattr(struct dentry *, struct iattr *);
6864  extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
6865  extern int simple_statfs(struct dentry *, struct kstatfs *);
6866 diff -NurpP --minimal linux-4.4.111/include/linux/init_task.h linux-4.4.111-vs2.3.9.5/include/linux/init_task.h
6867 --- linux-4.4.111/include/linux/init_task.h     2016-07-05 04:15:10.000000000 +0000
6868 +++ linux-4.4.111-vs2.3.9.5/include/linux/init_task.h   2018-01-09 16:36:32.000000000 +0000
6869 @@ -260,6 +260,10 @@ extern struct task_group root_task_group
6870         INIT_VTIME(tsk)                                                 \
6871         INIT_NUMA_BALANCING(tsk)                                        \
6872         INIT_KASAN(tsk)                                                 \
6873 +       .xid            = 0,                                            \
6874 +       .vx_info        = NULL,                                         \
6875 +       .nid            = 0,                                            \
6876 +       .nx_info        = NULL,                                         \
6877  }
6878
6879
6880 diff -NurpP --minimal linux-4.4.111/include/linux/ipc.h linux-4.4.111-vs2.3.9.5/include/linux/ipc.h
6881 --- linux-4.4.111/include/linux/ipc.h   2015-04-12 22:12:50.000000000 +0000
6882 +++ linux-4.4.111-vs2.3.9.5/include/linux/ipc.h 2018-01-09 16:36:32.000000000 +0000
6883 @@ -16,6 +16,7 @@ struct kern_ipc_perm
6884         key_t           key;
6885         kuid_t          uid;
6886         kgid_t          gid;
6887 +       vxid_t          xid;
6888         kuid_t          cuid;
6889         kgid_t          cgid;
6890         umode_t         mode;
6891 diff -NurpP --minimal linux-4.4.111/include/linux/memcontrol.h linux-4.4.111-vs2.3.9.5/include/linux/memcontrol.h
6892 --- linux-4.4.111/include/linux/memcontrol.h    2018-01-11 07:57:48.000000000 +0000
6893 +++ linux-4.4.111-vs2.3.9.5/include/linux/memcontrol.h  2018-01-09 16:36:32.000000000 +0000
6894 @@ -113,6 +113,7 @@ struct cg_proto {
6895         struct mem_cgroup       *memcg;
6896  };
6897
6898 +
6899  #ifdef CONFIG_MEMCG
6900  struct mem_cgroup_stat_cpu {
6901         long count[MEM_CGROUP_STAT_NSTATS];
6902 @@ -338,6 +339,11 @@ static inline bool mem_cgroup_is_descend
6903         return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup);
6904  }
6905
6906 +extern u64 mem_cgroup_mem_usage_pages(struct mem_cgroup *memcg);
6907 +extern u64 mem_cgroup_mem_limit_pages(struct mem_cgroup *memcg);
6908 +extern u64 mem_cgroup_memsw_usage_pages(struct mem_cgroup *memcg);
6909 +extern u64 mem_cgroup_memsw_limit_pages(struct mem_cgroup *memcg);
6910 +
6911  static inline bool mm_match_cgroup(struct mm_struct *mm,
6912                                    struct mem_cgroup *memcg)
6913  {
6914 diff -NurpP --minimal linux-4.4.111/include/linux/mount.h linux-4.4.111-vs2.3.9.5/include/linux/mount.h
6915 --- linux-4.4.111/include/linux/mount.h 2018-01-11 07:57:48.000000000 +0000
6916 +++ linux-4.4.111-vs2.3.9.5/include/linux/mount.h       2018-01-09 16:36:32.000000000 +0000
6917 @@ -63,6 +63,9 @@ struct mnt_namespace;
6918  #define MNT_MARKED             0x4000000
6919  #define MNT_UMOUNT             0x8000000
6920
6921 +#define MNT_TAGID      0x10000
6922 +#define MNT_NOTAG      0x20000
6923 +
6924  struct vfsmount {
6925         struct dentry *mnt_root;        /* root of the mounted tree */
6926         struct super_block *mnt_sb;     /* pointer to superblock */
6927 diff -NurpP --minimal linux-4.4.111/include/linux/net.h linux-4.4.111-vs2.3.9.5/include/linux/net.h
6928 --- linux-4.4.111/include/linux/net.h   2018-01-11 07:57:48.000000000 +0000
6929 +++ linux-4.4.111-vs2.3.9.5/include/linux/net.h 2018-01-09 16:42:30.000000000 +0000
6930 @@ -43,6 +43,7 @@ struct net;
6931  #define SOCK_NOSPACE           2
6932  #define SOCK_PASSCRED          3
6933  #define SOCK_PASSSEC           4
6934 +#define SOCK_USER_SOCKET       5
6935
6936  #ifndef ARCH_HAS_SOCKET_TYPES
6937  /**
6938 diff -NurpP --minimal linux-4.4.111/include/linux/netdevice.h linux-4.4.111-vs2.3.9.5/include/linux/netdevice.h
6939 --- linux-4.4.111/include/linux/netdevice.h     2018-01-11 07:57:48.000000000 +0000
6940 +++ linux-4.4.111-vs2.3.9.5/include/linux/netdevice.h   2018-01-09 16:36:32.000000000 +0000
6941 @@ -2296,6 +2296,7 @@ static inline int dev_recursion_level(vo
6942
6943  struct net_device *dev_get_by_index(struct net *net, int ifindex);
6944  struct net_device *__dev_get_by_index(struct net *net, int ifindex);
6945 +struct net_device *dev_get_by_index_real_rcu(struct net *net, int ifindex);
6946  struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
6947  int netdev_get_name(struct net *net, char *name, int ifindex);
6948  int dev_restart(struct net_device *dev);
6949 diff -NurpP --minimal linux-4.4.111/include/linux/nsproxy.h linux-4.4.111-vs2.3.9.5/include/linux/nsproxy.h
6950 --- linux-4.4.111/include/linux/nsproxy.h       2015-04-12 22:12:50.000000000 +0000
6951 +++ linux-4.4.111-vs2.3.9.5/include/linux/nsproxy.h     2018-01-09 16:36:32.000000000 +0000
6952 @@ -3,6 +3,7 @@
6953
6954  #include <linux/spinlock.h>
6955  #include <linux/sched.h>
6956 +#include <linux/vserver/debug.h>
6957
6958  struct mnt_namespace;
6959  struct uts_namespace;
6960 @@ -63,6 +64,7 @@ extern struct nsproxy init_nsproxy;
6961   */
6962
6963  int copy_namespaces(unsigned long flags, struct task_struct *tsk);
6964 +struct nsproxy *copy_nsproxy(struct nsproxy *orig);
6965  void exit_task_namespaces(struct task_struct *tsk);
6966  void switch_task_namespaces(struct task_struct *tsk, struct nsproxy *new);
6967  void free_nsproxy(struct nsproxy *ns);
6968 @@ -70,16 +72,26 @@ int unshare_nsproxy_namespaces(unsigned
6969         struct cred *, struct fs_struct *);
6970  int __init nsproxy_cache_init(void);
6971
6972 -static inline void put_nsproxy(struct nsproxy *ns)
6973 +#define        get_nsproxy(n)  __get_nsproxy(n, __FILE__, __LINE__)
6974 +
6975 +static inline void __get_nsproxy(struct nsproxy *ns,
6976 +       const char *_file, int _line)
6977  {
6978 -       if (atomic_dec_and_test(&ns->count)) {
6979 -               free_nsproxy(ns);
6980 -       }
6981 +       vxlprintk(VXD_CBIT(space, 0), "get_nsproxy(%p[%u])",
6982 +               ns, atomic_read(&ns->count), _file, _line);
6983 +       atomic_inc(&ns->count);
6984  }
6985
6986 -static inline void get_nsproxy(struct nsproxy *ns)
6987 +#define        put_nsproxy(n)  __put_nsproxy(n, __FILE__, __LINE__)
6988 +
6989 +static inline void __put_nsproxy(struct nsproxy *ns,
6990 +       const char *_file, int _line)
6991  {
6992 -       atomic_inc(&ns->count);
6993 +       vxlprintk(VXD_CBIT(space, 0), "put_nsproxy(%p[%u])",
6994 +               ns, atomic_read(&ns->count), _file, _line);
6995 +       if (atomic_dec_and_test(&ns->count)) {
6996 +               free_nsproxy(ns);
6997 +       }
6998  }
6999
7000  #endif
7001 diff -NurpP --minimal linux-4.4.111/include/linux/pid.h linux-4.4.111-vs2.3.9.5/include/linux/pid.h
7002 --- linux-4.4.111/include/linux/pid.h   2018-01-11 07:57:48.000000000 +0000
7003 +++ linux-4.4.111-vs2.3.9.5/include/linux/pid.h 2018-01-09 16:45:21.000000000 +0000
7004 @@ -10,7 +10,8 @@ enum pid_type
7005         PIDTYPE_SID,
7006         PIDTYPE_MAX,
7007         /* only valid to __task_pid_nr_ns() */
7008 -       __PIDTYPE_TGID
7009 +       __PIDTYPE_TGID,
7010 +       __PIDTYPE_REALPID
7011  };
7012
7013  /*
7014 @@ -172,6 +173,7 @@ static inline pid_t pid_nr(struct pid *p
7015  }
7016
7017  pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns);
7018 +pid_t pid_unmapped_nr_ns(struct pid *pid, struct pid_namespace *ns);
7019  pid_t pid_vnr(struct pid *pid);
7020
7021  #define do_each_pid_task(pid, type, task)                              \
7022 diff -NurpP --minimal linux-4.4.111/include/linux/quotaops.h linux-4.4.111-vs2.3.9.5/include/linux/quotaops.h
7023 --- linux-4.4.111/include/linux/quotaops.h      2016-07-05 04:12:37.000000000 +0000
7024 +++ linux-4.4.111-vs2.3.9.5/include/linux/quotaops.h    2018-01-09 16:36:32.000000000 +0000
7025 @@ -8,6 +8,7 @@
7026  #define _LINUX_QUOTAOPS_
7027
7028  #include <linux/fs.h>
7029 +#include <linux/vs_dlimit.h>
7030
7031  #define DQUOT_SPACE_WARN       0x1
7032  #define DQUOT_SPACE_RESERVE    0x2
7033 @@ -211,11 +212,12 @@ static inline void dquot_drop(struct ino
7034
7035  static inline int dquot_alloc_inode(struct inode *inode)
7036  {
7037 -       return 0;
7038 +       return dl_alloc_inode(inode);
7039  }
7040
7041  static inline void dquot_free_inode(struct inode *inode)
7042  {
7043 +       dl_free_inode(inode);
7044  }
7045
7046  static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
7047 @@ -226,6 +228,10 @@ static inline int dquot_transfer(struct
7048  static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
7049                 int flags)
7050  {
7051 +       int ret = 0;
7052 +
7053 +       if ((ret = dl_alloc_space(inode, number)))
7054 +               return ret;
7055         if (!(flags & DQUOT_SPACE_RESERVE))
7056                 inode_add_bytes(inode, number);
7057         return 0;
7058 @@ -236,6 +242,7 @@ static inline void __dquot_free_space(st
7059  {
7060         if (!(flags & DQUOT_SPACE_RESERVE))
7061                 inode_sub_bytes(inode, number);
7062 +       dl_free_space(inode, number);
7063  }
7064
7065  static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
7066 diff -NurpP --minimal linux-4.4.111/include/linux/sched.h linux-4.4.111-vs2.3.9.5/include/linux/sched.h
7067 --- linux-4.4.111/include/linux/sched.h 2018-01-11 07:57:48.000000000 +0000
7068 +++ linux-4.4.111-vs2.3.9.5/include/linux/sched.h       2018-01-09 16:36:32.000000000 +0000
7069 @@ -1600,6 +1600,14 @@ struct task_struct {
7070  #endif
7071         struct seccomp seccomp;
7072
7073 +/* vserver context data */
7074 +       struct vx_info *vx_info;
7075 +       struct nx_info *nx_info;
7076 +
7077 +       vxid_t xid;
7078 +       vnid_t nid;
7079 +       vtag_t tag;
7080 +
7081  /* Thread group tracking */
7082         u32 parent_exec_id;
7083         u32 self_exec_id;
7084 @@ -1927,6 +1935,11 @@ struct pid_namespace;
7085  pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
7086                         struct pid_namespace *ns);
7087
7088 +#include <linux/vserver/base.h>
7089 +#include <linux/vserver/context.h>
7090 +#include <linux/vserver/debug.h>
7091 +#include <linux/vserver/pid.h>
7092 +
7093  static inline pid_t task_pid_nr(struct task_struct *tsk)
7094  {
7095         return tsk->pid;
7096 @@ -1940,7 +1953,8 @@ static inline pid_t task_pid_nr_ns(struc
7097
7098  static inline pid_t task_pid_vnr(struct task_struct *tsk)
7099  {
7100 -       return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
7101 +       // return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
7102 +       return vx_map_pid(__task_pid_nr_ns(tsk, PIDTYPE_PID, NULL));
7103  }
7104
7105
7106 diff -NurpP --minimal linux-4.4.111/include/linux/shmem_fs.h linux-4.4.111-vs2.3.9.5/include/linux/shmem_fs.h
7107 --- linux-4.4.111/include/linux/shmem_fs.h      2018-01-11 07:57:48.000000000 +0000
7108 +++ linux-4.4.111-vs2.3.9.5/include/linux/shmem_fs.h    2018-01-09 16:36:32.000000000 +0000
7109 @@ -10,6 +10,9 @@
7110
7111  /* inode in-kernel data */
7112
7113 +#define TMPFS_SUPER_MAGIC      0x01021994
7114 +
7115 +
7116  struct shmem_inode_info {
7117         spinlock_t              lock;
7118         unsigned int            seals;          /* shmem seals */
7119 diff -NurpP --minimal linux-4.4.111/include/linux/stat.h linux-4.4.111-vs2.3.9.5/include/linux/stat.h
7120 --- linux-4.4.111/include/linux/stat.h  2015-04-12 22:12:50.000000000 +0000
7121 +++ linux-4.4.111-vs2.3.9.5/include/linux/stat.h        2018-01-09 16:36:32.000000000 +0000
7122 @@ -25,6 +25,7 @@ struct kstat {
7123         unsigned int    nlink;
7124         kuid_t          uid;
7125         kgid_t          gid;
7126 +       ktag_t          tag;
7127         dev_t           rdev;
7128         loff_t          size;
7129         struct timespec  atime;
7130 diff -NurpP --minimal linux-4.4.111/include/linux/sunrpc/auth.h linux-4.4.111-vs2.3.9.5/include/linux/sunrpc/auth.h
7131 --- linux-4.4.111/include/linux/sunrpc/auth.h   2016-07-05 04:12:37.000000000 +0000
7132 +++ linux-4.4.111-vs2.3.9.5/include/linux/sunrpc/auth.h 2018-01-09 16:36:32.000000000 +0000
7133 @@ -40,6 +40,7 @@ enum {
7134  struct auth_cred {
7135         kuid_t  uid;
7136         kgid_t  gid;
7137 +       ktag_t  tag;
7138         struct group_info *group_info;
7139         const char *principal;
7140         unsigned long ac_flags;
7141 diff -NurpP --minimal linux-4.4.111/include/linux/sunrpc/clnt.h linux-4.4.111-vs2.3.9.5/include/linux/sunrpc/clnt.h
7142 --- linux-4.4.111/include/linux/sunrpc/clnt.h   2018-01-11 07:57:48.000000000 +0000
7143 +++ linux-4.4.111-vs2.3.9.5/include/linux/sunrpc/clnt.h 2018-01-09 16:36:32.000000000 +0000
7144 @@ -51,7 +51,8 @@ struct rpc_clnt {
7145                                 cl_discrtry : 1,/* disconnect before retry */
7146                                 cl_noretranstimeo: 1,/* No retransmit timeouts */
7147                                 cl_autobind : 1,/* use getport() */
7148 -                               cl_chatty   : 1;/* be verbose */
7149 +                               cl_chatty   : 1,/* be verbose */
7150 +                               cl_tag      : 1;/* context tagging */
7151
7152         struct rpc_rtt *        cl_rtt;         /* RTO estimator data */
7153         const struct rpc_timeout *cl_timeout;   /* Timeout strategy */
7154 diff -NurpP --minimal linux-4.4.111/include/linux/types.h linux-4.4.111-vs2.3.9.5/include/linux/types.h
7155 --- linux-4.4.111/include/linux/types.h 2016-07-05 04:15:11.000000000 +0000
7156 +++ linux-4.4.111-vs2.3.9.5/include/linux/types.h       2018-01-09 16:36:32.000000000 +0000
7157 @@ -32,6 +32,9 @@ typedef __kernel_uid32_t      uid_t;
7158  typedef __kernel_gid32_t       gid_t;
7159  typedef __kernel_uid16_t        uid16_t;
7160  typedef __kernel_gid16_t        gid16_t;
7161 +typedef unsigned int           vxid_t;
7162 +typedef unsigned int           vnid_t;
7163 +typedef unsigned int           vtag_t;
7164
7165  typedef unsigned long          uintptr_t;
7166
7167 diff -NurpP --minimal linux-4.4.111/include/linux/uidgid.h linux-4.4.111-vs2.3.9.5/include/linux/uidgid.h
7168 --- linux-4.4.111/include/linux/uidgid.h        2015-07-06 20:41:43.000000000 +0000
7169 +++ linux-4.4.111-vs2.3.9.5/include/linux/uidgid.h      2018-01-09 16:36:32.000000000 +0000
7170 @@ -21,13 +21,17 @@ typedef struct {
7171         uid_t val;
7172  } kuid_t;
7173
7174 -
7175  typedef struct {
7176         gid_t val;
7177  } kgid_t;
7178
7179 +typedef struct {
7180 +       vtag_t val;
7181 +} ktag_t;
7182 +
7183  #define KUIDT_INIT(value) (kuid_t){ value }
7184  #define KGIDT_INIT(value) (kgid_t){ value }
7185 +#define KTAGT_INIT(value) (ktag_t){ value }
7186
7187  #ifdef CONFIG_MULTIUSER
7188  static inline uid_t __kuid_val(kuid_t uid)
7189 @@ -51,11 +55,18 @@ static inline gid_t __kgid_val(kgid_t gi
7190  }
7191  #endif
7192
7193 +static inline vtag_t __ktag_val(ktag_t tag)
7194 +{
7195 +       return tag.val;
7196 +}
7197 +
7198  #define GLOBAL_ROOT_UID KUIDT_INIT(0)
7199  #define GLOBAL_ROOT_GID KGIDT_INIT(0)
7200 +#define GLOBAL_ROOT_TAG KTAGT_INIT(0)
7201
7202  #define INVALID_UID KUIDT_INIT(-1)
7203  #define INVALID_GID KGIDT_INIT(-1)
7204 +#define INVALID_TAG KTAGT_INIT(-1)
7205
7206  static inline bool uid_eq(kuid_t left, kuid_t right)
7207  {
7208 @@ -67,6 +78,11 @@ static inline bool gid_eq(kgid_t left, k
7209         return __kgid_val(left) == __kgid_val(right);
7210  }
7211
7212 +static inline bool tag_eq(ktag_t left, ktag_t right)
7213 +{
7214 +       return __ktag_val(left) == __ktag_val(right);
7215 +}
7216 +
7217  static inline bool uid_gt(kuid_t left, kuid_t right)
7218  {
7219         return __kuid_val(left) > __kuid_val(right);
7220 @@ -117,13 +133,21 @@ static inline bool gid_valid(kgid_t gid)
7221         return __kgid_val(gid) != (gid_t) -1;
7222  }
7223
7224 +static inline bool tag_valid(ktag_t tag)
7225 +{
7226 +       return !tag_eq(tag, INVALID_TAG);
7227 +}
7228 +
7229  #ifdef CONFIG_USER_NS
7230
7231  extern kuid_t make_kuid(struct user_namespace *from, uid_t uid);
7232  extern kgid_t make_kgid(struct user_namespace *from, gid_t gid);
7233 +extern ktag_t make_ktag(struct user_namespace *from, gid_t gid);
7234
7235  extern uid_t from_kuid(struct user_namespace *to, kuid_t uid);
7236  extern gid_t from_kgid(struct user_namespace *to, kgid_t gid);
7237 +extern vtag_t from_ktag(struct user_namespace *to, ktag_t tag);
7238 +
7239  extern uid_t from_kuid_munged(struct user_namespace *to, kuid_t uid);
7240  extern gid_t from_kgid_munged(struct user_namespace *to, kgid_t gid);
7241
7242 @@ -149,6 +173,11 @@ static inline kgid_t make_kgid(struct us
7243         return KGIDT_INIT(gid);
7244  }
7245
7246 +static inline ktag_t make_ktag(struct user_namespace *from, vtag_t tag)
7247 +{
7248 +       return KTAGT_INIT(tag);
7249 +}
7250 +
7251  static inline uid_t from_kuid(struct user_namespace *to, kuid_t kuid)
7252  {
7253         return __kuid_val(kuid);
7254 @@ -159,6 +188,11 @@ static inline gid_t from_kgid(struct use
7255         return __kgid_val(kgid);
7256  }
7257
7258 +static inline vtag_t from_ktag(struct user_namespace *to, ktag_t ktag)
7259 +{
7260 +       return __ktag_val(ktag);
7261 +}
7262 +
7263  static inline uid_t from_kuid_munged(struct user_namespace *to, kuid_t kuid)
7264  {
7265         uid_t uid = from_kuid(to, kuid);
7266 diff -NurpP --minimal linux-4.4.111/include/linux/vroot.h linux-4.4.111-vs2.3.9.5/include/linux/vroot.h
7267 --- linux-4.4.111/include/linux/vroot.h 1970-01-01 00:00:00.000000000 +0000
7268 +++ linux-4.4.111-vs2.3.9.5/include/linux/vroot.h       2018-01-09 16:36:32.000000000 +0000
7269 @@ -0,0 +1,51 @@
7270 +
7271 +/*
7272 + * include/linux/vroot.h
7273 + *
7274 + * written by Herbert P?tzl, 9/11/2002
7275 + * ported to 2.6 by Herbert P?tzl, 30/12/2004
7276 + *
7277 + * Copyright (C) 2002-2007 by Herbert P?tzl.
7278 + * Redistribution of this file is permitted under the
7279 + * GNU General Public License.
7280 + */
7281 +
7282 +#ifndef _LINUX_VROOT_H
7283 +#define _LINUX_VROOT_H
7284 +
7285 +
7286 +#ifdef __KERNEL__
7287 +
7288 +/* Possible states of device */
7289 +enum {
7290 +       Vr_unbound,
7291 +       Vr_bound,
7292 +};
7293 +
7294 +struct vroot_device {
7295 +       int             vr_number;
7296 +       int             vr_refcnt;
7297 +
7298 +       struct semaphore        vr_ctl_mutex;
7299 +       struct block_device    *vr_device;
7300 +       int                     vr_state;
7301 +};
7302 +
7303 +
7304 +typedef struct block_device *(vroot_grb_func)(struct block_device *);
7305 +
7306 +extern int register_vroot_grb(vroot_grb_func *);
7307 +extern int unregister_vroot_grb(vroot_grb_func *);
7308 +
7309 +#endif /* __KERNEL__ */
7310 +
7311 +#define MAX_VROOT_DEFAULT      8
7312 +
7313 +/*
7314 + * IOCTL commands --- we will commandeer 0x56 ('V')
7315 + */
7316 +
7317 +#define VROOT_SET_DEV          0x5600
7318 +#define VROOT_CLR_DEV          0x5601
7319 +
7320 +#endif /* _LINUX_VROOT_H */
7321 diff -NurpP --minimal linux-4.4.111/include/linux/vs_base.h linux-4.4.111-vs2.3.9.5/include/linux/vs_base.h
7322 --- linux-4.4.111/include/linux/vs_base.h       1970-01-01 00:00:00.000000000 +0000
7323 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_base.h     2018-01-09 16:36:32.000000000 +0000
7324 @@ -0,0 +1,10 @@
7325 +#ifndef _VS_BASE_H
7326 +#define _VS_BASE_H
7327 +
7328 +#include "vserver/base.h"
7329 +#include "vserver/check.h"
7330 +#include "vserver/debug.h"
7331 +
7332 +#else
7333 +#warning duplicate inclusion
7334 +#endif
7335 diff -NurpP --minimal linux-4.4.111/include/linux/vs_context.h linux-4.4.111-vs2.3.9.5/include/linux/vs_context.h
7336 --- linux-4.4.111/include/linux/vs_context.h    1970-01-01 00:00:00.000000000 +0000
7337 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_context.h  2018-01-09 16:36:32.000000000 +0000
7338 @@ -0,0 +1,242 @@
7339 +#ifndef _VS_CONTEXT_H
7340 +#define _VS_CONTEXT_H
7341 +
7342 +#include "vserver/base.h"
7343 +#include "vserver/check.h"
7344 +#include "vserver/context.h"
7345 +#include "vserver/history.h"
7346 +#include "vserver/debug.h"
7347 +
7348 +#include <linux/sched.h>
7349 +
7350 +
7351 +#define get_vx_info(i) __get_vx_info(i, __FILE__, __LINE__, __HERE__)
7352 +
7353 +static inline struct vx_info *__get_vx_info(struct vx_info *vxi,
7354 +       const char *_file, int _line, void *_here)
7355 +{
7356 +       if (!vxi)
7357 +               return NULL;
7358 +
7359 +       vxlprintk(VXD_CBIT(xid, 2), "get_vx_info(%p[#%d.%d])",
7360 +               vxi, vxi ? vxi->vx_id : 0,
7361 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7362 +               _file, _line);
7363 +       __vxh_get_vx_info(vxi, _here);
7364 +
7365 +       atomic_inc(&vxi->vx_usecnt);
7366 +       return vxi;
7367 +}
7368 +
7369 +
7370 +extern void free_vx_info(struct vx_info *);
7371 +
7372 +#define put_vx_info(i) __put_vx_info(i, __FILE__, __LINE__, __HERE__)
7373 +
7374 +static inline void __put_vx_info(struct vx_info *vxi,
7375 +       const char *_file, int _line, void *_here)
7376 +{
7377 +       if (!vxi)
7378 +               return;
7379 +
7380 +       vxlprintk(VXD_CBIT(xid, 2), "put_vx_info(%p[#%d.%d])",
7381 +               vxi, vxi ? vxi->vx_id : 0,
7382 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7383 +               _file, _line);
7384 +       __vxh_put_vx_info(vxi, _here);
7385 +
7386 +       if (atomic_dec_and_test(&vxi->vx_usecnt))
7387 +               free_vx_info(vxi);
7388 +}
7389 +
7390 +
7391 +#define init_vx_info(p, i) \
7392 +       __init_vx_info(p, i, __FILE__, __LINE__, __HERE__)
7393 +
7394 +static inline void __init_vx_info(struct vx_info **vxp, struct vx_info *vxi,
7395 +       const char *_file, int _line, void *_here)
7396 +{
7397 +       if (vxi) {
7398 +               vxlprintk(VXD_CBIT(xid, 3),
7399 +                       "init_vx_info(%p[#%d.%d])",
7400 +                       vxi, vxi ? vxi->vx_id : 0,
7401 +                       vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7402 +                       _file, _line);
7403 +               __vxh_init_vx_info(vxi, vxp, _here);
7404 +
7405 +               atomic_inc(&vxi->vx_usecnt);
7406 +       }
7407 +       *vxp = vxi;
7408 +}
7409 +
7410 +
7411 +#define set_vx_info(p, i) \
7412 +       __set_vx_info(p, i, __FILE__, __LINE__, __HERE__)
7413 +
7414 +static inline void __set_vx_info(struct vx_info **vxp, struct vx_info *vxi,
7415 +       const char *_file, int _line, void *_here)
7416 +{
7417 +       struct vx_info *vxo;
7418 +
7419 +       if (!vxi)
7420 +               return;
7421 +
7422 +       vxlprintk(VXD_CBIT(xid, 3), "set_vx_info(%p[#%d.%d])",
7423 +               vxi, vxi ? vxi->vx_id : 0,
7424 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7425 +               _file, _line);
7426 +       __vxh_set_vx_info(vxi, vxp, _here);
7427 +
7428 +       atomic_inc(&vxi->vx_usecnt);
7429 +       vxo = xchg(vxp, vxi);
7430 +       BUG_ON(vxo);
7431 +}
7432 +
7433 +
7434 +#define clr_vx_info(p) __clr_vx_info(p, __FILE__, __LINE__, __HERE__)
7435 +
7436 +static inline void __clr_vx_info(struct vx_info **vxp,
7437 +       const char *_file, int _line, void *_here)
7438 +{
7439 +       struct vx_info *vxo;
7440 +
7441 +       vxo = xchg(vxp, NULL);
7442 +       if (!vxo)
7443 +               return;
7444 +
7445 +       vxlprintk(VXD_CBIT(xid, 3), "clr_vx_info(%p[#%d.%d])",
7446 +               vxo, vxo ? vxo->vx_id : 0,
7447 +               vxo ? atomic_read(&vxo->vx_usecnt) : 0,
7448 +               _file, _line);
7449 +       __vxh_clr_vx_info(vxo, vxp, _here);
7450 +
7451 +       if (atomic_dec_and_test(&vxo->vx_usecnt))
7452 +               free_vx_info(vxo);
7453 +}
7454 +
7455 +
7456 +#define claim_vx_info(v, p) \
7457 +       __claim_vx_info(v, p, __FILE__, __LINE__, __HERE__)
7458 +
7459 +static inline void __claim_vx_info(struct vx_info *vxi,
7460 +       struct task_struct *task,
7461 +       const char *_file, int _line, void *_here)
7462 +{
7463 +       vxlprintk(VXD_CBIT(xid, 3), "claim_vx_info(%p[#%d.%d.%d]) %p",
7464 +               vxi, vxi ? vxi->vx_id : 0,
7465 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7466 +               vxi ? atomic_read(&vxi->vx_tasks) : 0,
7467 +               task, _file, _line);
7468 +       __vxh_claim_vx_info(vxi, task, _here);
7469 +
7470 +       atomic_inc(&vxi->vx_tasks);
7471 +}
7472 +
7473 +
7474 +extern void unhash_vx_info(struct vx_info *);
7475 +
7476 +#define release_vx_info(v, p) \
7477 +       __release_vx_info(v, p, __FILE__, __LINE__, __HERE__)
7478 +
7479 +static inline void __release_vx_info(struct vx_info *vxi,
7480 +       struct task_struct *task,
7481 +       const char *_file, int _line, void *_here)
7482 +{
7483 +       vxlprintk(VXD_CBIT(xid, 3), "release_vx_info(%p[#%d.%d.%d]) %p",
7484 +               vxi, vxi ? vxi->vx_id : 0,
7485 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7486 +               vxi ? atomic_read(&vxi->vx_tasks) : 0,
7487 +               task, _file, _line);
7488 +       __vxh_release_vx_info(vxi, task, _here);
7489 +
7490 +       might_sleep();
7491 +
7492 +       if (atomic_dec_and_test(&vxi->vx_tasks))
7493 +               unhash_vx_info(vxi);
7494 +}
7495 +
7496 +
7497 +#define task_get_vx_info(p) \
7498 +       __task_get_vx_info(p, __FILE__, __LINE__, __HERE__)
7499 +
7500 +static inline struct vx_info *__task_get_vx_info(struct task_struct *p,
7501 +       const char *_file, int _line, void *_here)
7502 +{
7503 +       struct vx_info *vxi;
7504 +
7505 +       task_lock(p);
7506 +       vxlprintk(VXD_CBIT(xid, 5), "task_get_vx_info(%p)",
7507 +               p, _file, _line);
7508 +       vxi = __get_vx_info(p->vx_info, _file, _line, _here);
7509 +       task_unlock(p);
7510 +       return vxi;
7511 +}
7512 +
7513 +
7514 +static inline void __wakeup_vx_info(struct vx_info *vxi)
7515 +{
7516 +       if (waitqueue_active(&vxi->vx_wait))
7517 +               wake_up_interruptible(&vxi->vx_wait);
7518 +}
7519 +
7520 +
7521 +#define enter_vx_info(v, s) __enter_vx_info(v, s, __FILE__, __LINE__)
7522 +
7523 +static inline void __enter_vx_info(struct vx_info *vxi,
7524 +       struct vx_info_save *vxis, const char *_file, int _line)
7525 +{
7526 +       vxlprintk(VXD_CBIT(xid, 5), "enter_vx_info(%p[#%d],%p) %p[#%d,%p]",
7527 +               vxi, vxi ? vxi->vx_id : 0, vxis, current,
7528 +               current->xid, current->vx_info, _file, _line);
7529 +       vxis->vxi = xchg(&current->vx_info, vxi);
7530 +       vxis->xid = current->xid;
7531 +       current->xid = vxi ? vxi->vx_id : 0;
7532 +}
7533 +
7534 +#define leave_vx_info(s) __leave_vx_info(s, __FILE__, __LINE__)
7535 +
7536 +static inline void __leave_vx_info(struct vx_info_save *vxis,
7537 +       const char *_file, int _line)
7538 +{
7539 +       vxlprintk(VXD_CBIT(xid, 5), "leave_vx_info(%p[#%d,%p]) %p[#%d,%p]",
7540 +               vxis, vxis->xid, vxis->vxi, current,
7541 +               current->xid, current->vx_info, _file, _line);
7542 +       (void)xchg(&current->vx_info, vxis->vxi);
7543 +       current->xid = vxis->xid;
7544 +}
7545 +
7546 +
7547 +static inline void __enter_vx_admin(struct vx_info_save *vxis)
7548 +{
7549 +       vxis->vxi = xchg(&current->vx_info, NULL);
7550 +       vxis->xid = xchg(&current->xid, (vxid_t)0);
7551 +}
7552 +
7553 +static inline void __leave_vx_admin(struct vx_info_save *vxis)
7554 +{
7555 +       (void)xchg(&current->xid, vxis->xid);
7556 +       (void)xchg(&current->vx_info, vxis->vxi);
7557 +}
7558 +
7559 +#define task_is_init(p) \
7560 +       __task_is_init(p, __FILE__, __LINE__, __HERE__)
7561 +
7562 +static inline int __task_is_init(struct task_struct *p,
7563 +       const char *_file, int _line, void *_here)
7564 +{
7565 +       int is_init = is_global_init(p);
7566 +
7567 +       task_lock(p);
7568 +       if (p->vx_info)
7569 +               is_init = p->vx_info->vx_initpid == p->pid;
7570 +       task_unlock(p);
7571 +       return is_init;
7572 +}
7573 +
7574 +extern void exit_vx_info(struct task_struct *, int);
7575 +extern void exit_vx_info_early(struct task_struct *, int);
7576 +
7577 +
7578 +#else
7579 +#warning duplicate inclusion
7580 +#endif
7581 diff -NurpP --minimal linux-4.4.111/include/linux/vs_cowbl.h linux-4.4.111-vs2.3.9.5/include/linux/vs_cowbl.h
7582 --- linux-4.4.111/include/linux/vs_cowbl.h      1970-01-01 00:00:00.000000000 +0000
7583 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_cowbl.h    2018-01-09 16:36:32.000000000 +0000
7584 @@ -0,0 +1,48 @@
7585 +#ifndef _VS_COWBL_H
7586 +#define _VS_COWBL_H
7587 +
7588 +#include <linux/fs.h>
7589 +#include <linux/dcache.h>
7590 +#include <linux/namei.h>
7591 +#include <linux/slab.h>
7592 +
7593 +extern struct dentry *cow_break_link(const char *pathname);
7594 +
7595 +static inline int cow_check_and_break(struct path *path)
7596 +{
7597 +       struct inode *inode = path->dentry->d_inode;
7598 +       int error = 0;
7599 +
7600 +       /* do we need this check? */
7601 +       if (IS_RDONLY(inode))
7602 +               return -EROFS;
7603 +
7604 +       if (IS_COW(inode)) {
7605 +               if (IS_COW_LINK(inode)) {
7606 +                       struct dentry *new_dentry, *old_dentry = path->dentry;
7607 +                       char *pp, *buf;
7608 +
7609 +                       buf = kmalloc(PATH_MAX, GFP_KERNEL);
7610 +                       if (!buf) {
7611 +                               return -ENOMEM;
7612 +                       }
7613 +                       pp = d_path(path, buf, PATH_MAX);
7614 +                       new_dentry = cow_break_link(pp);
7615 +                       kfree(buf);
7616 +                       if (!IS_ERR(new_dentry)) {
7617 +                               path->dentry = new_dentry;
7618 +                               dput(old_dentry);
7619 +                       } else
7620 +                               error = PTR_ERR(new_dentry);
7621 +               } else {
7622 +                       inode->i_flags &= ~(S_IXUNLINK | S_IMMUTABLE);
7623 +                       inode->i_ctime = CURRENT_TIME;
7624 +                       mark_inode_dirty(inode);
7625 +               }
7626 +       }
7627 +       return error;
7628 +}
7629 +
7630 +#else
7631 +#warning duplicate inclusion
7632 +#endif
7633 diff -NurpP --minimal linux-4.4.111/include/linux/vs_cvirt.h linux-4.4.111-vs2.3.9.5/include/linux/vs_cvirt.h
7634 --- linux-4.4.111/include/linux/vs_cvirt.h      1970-01-01 00:00:00.000000000 +0000
7635 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_cvirt.h    2018-01-09 16:36:32.000000000 +0000
7636 @@ -0,0 +1,50 @@
7637 +#ifndef _VS_CVIRT_H
7638 +#define _VS_CVIRT_H
7639 +
7640 +#include "vserver/cvirt.h"
7641 +#include "vserver/context.h"
7642 +#include "vserver/base.h"
7643 +#include "vserver/check.h"
7644 +#include "vserver/debug.h"
7645 +
7646 +
7647 +static inline void vx_activate_task(struct task_struct *p)
7648 +{
7649 +       struct vx_info *vxi;
7650 +
7651 +       if ((vxi = p->vx_info)) {
7652 +               vx_update_load(vxi);
7653 +               atomic_inc(&vxi->cvirt.nr_running);
7654 +       }
7655 +}
7656 +
7657 +static inline void vx_deactivate_task(struct task_struct *p)
7658 +{
7659 +       struct vx_info *vxi;
7660 +
7661 +       if ((vxi = p->vx_info)) {
7662 +               vx_update_load(vxi);
7663 +               atomic_dec(&vxi->cvirt.nr_running);
7664 +       }
7665 +}
7666 +
7667 +static inline void vx_uninterruptible_inc(struct task_struct *p)
7668 +{
7669 +       struct vx_info *vxi;
7670 +
7671 +       if ((vxi = p->vx_info))
7672 +               atomic_inc(&vxi->cvirt.nr_uninterruptible);
7673 +}
7674 +
7675 +static inline void vx_uninterruptible_dec(struct task_struct *p)
7676 +{
7677 +       struct vx_info *vxi;
7678 +
7679 +       if ((vxi = p->vx_info))
7680 +               atomic_dec(&vxi->cvirt.nr_uninterruptible);
7681 +}
7682 +
7683 +
7684 +#else
7685 +#warning duplicate inclusion
7686 +#endif
7687 diff -NurpP --minimal linux-4.4.111/include/linux/vs_device.h linux-4.4.111-vs2.3.9.5/include/linux/vs_device.h
7688 --- linux-4.4.111/include/linux/vs_device.h     1970-01-01 00:00:00.000000000 +0000
7689 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_device.h   2018-01-09 16:36:32.000000000 +0000
7690 @@ -0,0 +1,45 @@
7691 +#ifndef _VS_DEVICE_H
7692 +#define _VS_DEVICE_H
7693 +
7694 +#include "vserver/base.h"
7695 +#include "vserver/device.h"
7696 +#include "vserver/debug.h"
7697 +
7698 +
7699 +#ifdef CONFIG_VSERVER_DEVICE
7700 +
7701 +int vs_map_device(struct vx_info *, dev_t, dev_t *, umode_t);
7702 +
7703 +#define vs_device_perm(v, d, m, p) \
7704 +       ((vs_map_device(current_vx_info(), d, NULL, m) & (p)) == (p))
7705 +
7706 +#else
7707 +
7708 +static inline
7709 +int vs_map_device(struct vx_info *vxi,
7710 +       dev_t device, dev_t *target, umode_t mode)
7711 +{
7712 +       if (target)
7713 +               *target = device;
7714 +       return ~0;
7715 +}
7716 +
7717 +#define vs_device_perm(v, d, m, p) ((p) == (p))
7718 +
7719 +#endif
7720 +
7721 +
7722 +#define vs_map_chrdev(d, t, p) \
7723 +       ((vs_map_device(current_vx_info(), d, t, S_IFCHR) & (p)) == (p))
7724 +#define vs_map_blkdev(d, t, p) \
7725 +       ((vs_map_device(current_vx_info(), d, t, S_IFBLK) & (p)) == (p))
7726 +
7727 +#define vs_chrdev_perm(d, p) \
7728 +       vs_device_perm(current_vx_info(), d, S_IFCHR, p)
7729 +#define vs_blkdev_perm(d, p) \
7730 +       vs_device_perm(current_vx_info(), d, S_IFBLK, p)
7731 +
7732 +
7733 +#else
7734 +#warning duplicate inclusion
7735 +#endif
7736 diff -NurpP --minimal linux-4.4.111/include/linux/vs_dlimit.h linux-4.4.111-vs2.3.9.5/include/linux/vs_dlimit.h
7737 --- linux-4.4.111/include/linux/vs_dlimit.h     1970-01-01 00:00:00.000000000 +0000
7738 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_dlimit.h   2018-01-09 16:36:32.000000000 +0000
7739 @@ -0,0 +1,215 @@
7740 +#ifndef _VS_DLIMIT_H
7741 +#define _VS_DLIMIT_H
7742 +
7743 +#include <linux/fs.h>
7744 +
7745 +#include "vserver/dlimit.h"
7746 +#include "vserver/base.h"
7747 +#include "vserver/debug.h"
7748 +
7749 +
7750 +#define get_dl_info(i) __get_dl_info(i, __FILE__, __LINE__)
7751 +
7752 +static inline struct dl_info *__get_dl_info(struct dl_info *dli,
7753 +       const char *_file, int _line)
7754 +{
7755 +       if (!dli)
7756 +               return NULL;
7757 +       vxlprintk(VXD_CBIT(dlim, 4), "get_dl_info(%p[#%d.%d])",
7758 +               dli, dli ? dli->dl_tag : 0,
7759 +               dli ? atomic_read(&dli->dl_usecnt) : 0,
7760 +               _file, _line);
7761 +       atomic_inc(&dli->dl_usecnt);
7762 +       return dli;
7763 +}
7764 +
7765 +
7766 +#define free_dl_info(i) \
7767 +       call_rcu(&(i)->dl_rcu, rcu_free_dl_info)
7768 +
7769 +#define put_dl_info(i) __put_dl_info(i, __FILE__, __LINE__)
7770 +
7771 +static inline void __put_dl_info(struct dl_info *dli,
7772 +       const char *_file, int _line)
7773 +{
7774 +       if (!dli)
7775 +               return;
7776 +       vxlprintk(VXD_CBIT(dlim, 4), "put_dl_info(%p[#%d.%d])",
7777 +               dli, dli ? dli->dl_tag : 0,
7778 +               dli ? atomic_read(&dli->dl_usecnt) : 0,
7779 +               _file, _line);
7780 +       if (atomic_dec_and_test(&dli->dl_usecnt))
7781 +               free_dl_info(dli);
7782 +}
7783 +
7784 +
7785 +#define __dlimit_char(d)       ((d) ? '*' : ' ')
7786 +
7787 +static inline int __dl_alloc_space(struct super_block *sb,
7788 +       vtag_t tag, dlsize_t nr, const char *file, int line)
7789 +{
7790 +       struct dl_info *dli = NULL;
7791 +       int ret = 0;
7792 +
7793 +       if (nr == 0)
7794 +               goto out;
7795 +       dli = locate_dl_info(sb, tag);
7796 +       if (!dli)
7797 +               goto out;
7798 +
7799 +       spin_lock(&dli->dl_lock);
7800 +       ret = (dli->dl_space_used + nr > dli->dl_space_total);
7801 +       if (!ret)
7802 +               dli->dl_space_used += nr;
7803 +       spin_unlock(&dli->dl_lock);
7804 +       put_dl_info(dli);
7805 +out:
7806 +       vxlprintk(VXD_CBIT(dlim, 1),
7807 +               "ALLOC (%p,#%d)%c %lld bytes (%d)",
7808 +               sb, tag, __dlimit_char(dli), (long long)nr,
7809 +               ret, file, line);
7810 +       return ret ? -ENOSPC : 0;
7811 +}
7812 +
7813 +static inline void __dl_free_space(struct super_block *sb,
7814 +       vtag_t tag, dlsize_t nr, const char *_file, int _line)
7815 +{
7816 +       struct dl_info *dli = NULL;
7817 +
7818 +       if (nr == 0)
7819 +               goto out;
7820 +       dli = locate_dl_info(sb, tag);
7821 +       if (!dli)
7822 +               goto out;
7823 +
7824 +       spin_lock(&dli->dl_lock);
7825 +       if (dli->dl_space_used > nr)
7826 +               dli->dl_space_used -= nr;
7827 +       else
7828 +               dli->dl_space_used = 0;
7829 +       spin_unlock(&dli->dl_lock);
7830 +       put_dl_info(dli);
7831 +out:
7832 +       vxlprintk(VXD_CBIT(dlim, 1),
7833 +               "FREE  (%p,#%d)%c %lld bytes",
7834 +               sb, tag, __dlimit_char(dli), (long long)nr,
7835 +               _file, _line);
7836 +}
7837 +
7838 +static inline int __dl_alloc_inode(struct super_block *sb,
7839 +       vtag_t tag, const char *_file, int _line)
7840 +{
7841 +       struct dl_info *dli;
7842 +       int ret = 0;
7843 +
7844 +       dli = locate_dl_info(sb, tag);
7845 +       if (!dli)
7846 +               goto out;
7847 +
7848 +       spin_lock(&dli->dl_lock);
7849 +       dli->dl_inodes_used++;
7850 +       ret = (dli->dl_inodes_used > dli->dl_inodes_total);
7851 +       spin_unlock(&dli->dl_lock);
7852 +       put_dl_info(dli);
7853 +out:
7854 +       vxlprintk(VXD_CBIT(dlim, 0),
7855 +               "ALLOC (%p,#%d)%c inode (%d)",
7856 +               sb, tag, __dlimit_char(dli), ret, _file, _line);
7857 +       return ret ? -ENOSPC : 0;
7858 +}
7859 +
7860 +static inline void __dl_free_inode(struct super_block *sb,
7861 +       vtag_t tag, const char *_file, int _line)
7862 +{
7863 +       struct dl_info *dli;
7864 +
7865 +       dli = locate_dl_info(sb, tag);
7866 +       if (!dli)
7867 +               goto out;
7868 +
7869 +       spin_lock(&dli->dl_lock);
7870 +       if (dli->dl_inodes_used > 1)
7871 +               dli->dl_inodes_used--;
7872 +       else
7873 +               dli->dl_inodes_used = 0;
7874 +       spin_unlock(&dli->dl_lock);
7875 +       put_dl_info(dli);
7876 +out:
7877 +       vxlprintk(VXD_CBIT(dlim, 0),
7878 +               "FREE  (%p,#%d)%c inode",
7879 +               sb, tag, __dlimit_char(dli), _file, _line);
7880 +}
7881 +
7882 +static inline void __dl_adjust_block(struct super_block *sb, vtag_t tag,
7883 +       unsigned long long *free_blocks, unsigned long long *root_blocks,
7884 +       const char *_file, int _line)
7885 +{
7886 +       struct dl_info *dli;
7887 +       uint64_t broot, bfree;
7888 +
7889 +       dli = locate_dl_info(sb, tag);
7890 +       if (!dli)
7891 +               return;
7892 +
7893 +       spin_lock(&dli->dl_lock);
7894 +       broot = (dli->dl_space_total -
7895 +               (dli->dl_space_total >> 10) * dli->dl_nrlmult)
7896 +               >> sb->s_blocksize_bits;
7897 +       bfree = (dli->dl_space_total - dli->dl_space_used)
7898 +                       >> sb->s_blocksize_bits;
7899 +       spin_unlock(&dli->dl_lock);
7900 +
7901 +       vxlprintk(VXD_CBIT(dlim, 2),
7902 +               "ADJUST: %lld,%lld on %lld,%lld [mult=%d]",
7903 +               (long long)bfree, (long long)broot,
7904 +               *free_blocks, *root_blocks, dli->dl_nrlmult,
7905 +               _file, _line);
7906 +       if (free_blocks) {
7907 +               if (*free_blocks > bfree)
7908 +                       *free_blocks = bfree;
7909 +       }
7910 +       if (root_blocks) {
7911 +               if (*root_blocks > broot)
7912 +                       *root_blocks = broot;
7913 +       }
7914 +       put_dl_info(dli);
7915 +}
7916 +
7917 +#define dl_prealloc_space(in, bytes) \
7918 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7919 +               __FILE__, __LINE__ )
7920 +
7921 +#define dl_alloc_space(in, bytes) \
7922 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7923 +               __FILE__, __LINE__ )
7924 +
7925 +#define dl_reserve_space(in, bytes) \
7926 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7927 +               __FILE__, __LINE__ )
7928 +
7929 +#define dl_claim_space(in, bytes) (0)
7930 +
7931 +#define dl_release_space(in, bytes) \
7932 +       __dl_free_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7933 +               __FILE__, __LINE__ )
7934 +
7935 +#define dl_free_space(in, bytes) \
7936 +       __dl_free_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7937 +               __FILE__, __LINE__ )
7938 +
7939 +
7940 +
7941 +#define dl_alloc_inode(in) \
7942 +       __dl_alloc_inode((in)->i_sb, i_tag_read(in), __FILE__, __LINE__ )
7943 +
7944 +#define dl_free_inode(in) \
7945 +       __dl_free_inode((in)->i_sb, i_tag_read(in), __FILE__, __LINE__ )
7946 +
7947 +
7948 +#define dl_adjust_block(sb, tag, fb, rb) \
7949 +       __dl_adjust_block(sb, tag, fb, rb, __FILE__, __LINE__ )
7950 +
7951 +
7952 +#else
7953 +#warning duplicate inclusion
7954 +#endif
7955 diff -NurpP --minimal linux-4.4.111/include/linux/vs_inet.h linux-4.4.111-vs2.3.9.5/include/linux/vs_inet.h
7956 --- linux-4.4.111/include/linux/vs_inet.h       1970-01-01 00:00:00.000000000 +0000
7957 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_inet.h     2018-01-09 16:36:32.000000000 +0000
7958 @@ -0,0 +1,364 @@
7959 +#ifndef _VS_INET_H
7960 +#define _VS_INET_H
7961 +
7962 +#include "vserver/base.h"
7963 +#include "vserver/network.h"
7964 +#include "vserver/debug.h"
7965 +
7966 +#define IPI_LOOPBACK   htonl(INADDR_LOOPBACK)
7967 +
7968 +#define NXAV4(a)       NIPQUAD((a)->ip[0]), NIPQUAD((a)->ip[1]), \
7969 +                       NIPQUAD((a)->mask), (a)->type
7970 +#define NXAV4_FMT      "[" NIPQUAD_FMT "-" NIPQUAD_FMT "/" NIPQUAD_FMT ":%04x]"
7971 +
7972 +#define NIPQUAD(addr) \
7973 +       ((unsigned char *)&addr)[0], \
7974 +       ((unsigned char *)&addr)[1], \
7975 +       ((unsigned char *)&addr)[2], \
7976 +       ((unsigned char *)&addr)[3]
7977 +
7978 +#define NIPQUAD_FMT "%u.%u.%u.%u"
7979 +
7980 +
7981 +static inline
7982 +int v4_addr_match(struct nx_addr_v4 *nxa, __be32 addr, uint16_t tmask)
7983 +{
7984 +       __be32 ip = nxa->ip[0].s_addr;
7985 +       __be32 mask = nxa->mask.s_addr;
7986 +       __be32 bcast = ip | ~mask;
7987 +       int ret = 0;
7988 +
7989 +       switch (nxa->type & tmask) {
7990 +       case NXA_TYPE_MASK:
7991 +               ret = (ip == (addr & mask));
7992 +               break;
7993 +       case NXA_TYPE_ADDR:
7994 +               ret = 3;
7995 +               if (addr == ip)
7996 +                       break;
7997 +               /* fall through to broadcast */
7998 +       case NXA_MOD_BCAST:
7999 +               ret = ((tmask & NXA_MOD_BCAST) && (addr == bcast));
8000 +               break;
8001 +       case NXA_TYPE_RANGE:
8002 +               ret = ((nxa->ip[0].s_addr <= addr) &&
8003 +                       (nxa->ip[1].s_addr > addr));
8004 +               break;
8005 +       case NXA_TYPE_ANY:
8006 +               ret = 2;
8007 +               break;
8008 +       }
8009 +
8010 +       vxdprintk(VXD_CBIT(net, 0),
8011 +               "v4_addr_match(%p" NXAV4_FMT "," NIPQUAD_FMT ",%04x) = %d",
8012 +               nxa, NXAV4(nxa), NIPQUAD(addr), tmask, ret);
8013 +       return ret;
8014 +}
8015 +
8016 +static inline
8017 +int v4_addr_in_nx_info(struct nx_info *nxi, __be32 addr, uint16_t tmask)
8018 +{
8019 +       struct nx_addr_v4 *nxa;
8020 +       unsigned long irqflags;
8021 +       int ret = 1;
8022 +
8023 +       if (!nxi)
8024 +               goto out;
8025 +
8026 +       ret = 2;
8027 +       /* allow 127.0.0.1 when remapping lback */
8028 +       if ((tmask & NXA_LOOPBACK) &&
8029 +               (addr == IPI_LOOPBACK) &&
8030 +               nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
8031 +               goto out;
8032 +       ret = 3;
8033 +       /* check for lback address */
8034 +       if ((tmask & NXA_MOD_LBACK) &&
8035 +               (nxi->v4_lback.s_addr == addr))
8036 +               goto out;
8037 +       ret = 4;
8038 +       /* check for broadcast address */
8039 +       if ((tmask & NXA_MOD_BCAST) &&
8040 +               (nxi->v4_bcast.s_addr == addr))
8041 +               goto out;
8042 +       ret = 5;
8043 +
8044 +       /* check for v4 addresses */
8045 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8046 +       for (nxa = &nxi->v4; nxa; nxa = nxa->next)
8047 +               if (v4_addr_match(nxa, addr, tmask))
8048 +                       goto out_unlock;
8049 +       ret = 0;
8050 +out_unlock:
8051 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8052 +out:
8053 +       vxdprintk(VXD_CBIT(net, 0),
8054 +               "v4_addr_in_nx_info(%p[#%u]," NIPQUAD_FMT ",%04x) = %d",
8055 +               nxi, nxi ? nxi->nx_id : 0, NIPQUAD(addr), tmask, ret);
8056 +       return ret;
8057 +}
8058 +
8059 +static inline
8060 +int v4_nx_addr_match(struct nx_addr_v4 *nxa, struct nx_addr_v4 *addr, uint16_t mask)
8061 +{
8062 +       /* FIXME: needs full range checks */
8063 +       return v4_addr_match(nxa, addr->ip[0].s_addr, mask);
8064 +}
8065 +
8066 +static inline
8067 +int v4_nx_addr_in_nx_info(struct nx_info *nxi, struct nx_addr_v4 *nxa, uint16_t mask)
8068 +{
8069 +       struct nx_addr_v4 *ptr;
8070 +       unsigned long irqflags;
8071 +       int ret = 1;
8072 +
8073 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8074 +       for (ptr = &nxi->v4; ptr; ptr = ptr->next)
8075 +               if (v4_nx_addr_match(ptr, nxa, mask))
8076 +                       goto out_unlock;
8077 +       ret = 0;
8078 +out_unlock:
8079 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8080 +       return ret;
8081 +}
8082 +
8083 +#include <net/inet_sock.h>
8084 +
8085 +/*
8086 + *     Check if a given address matches for a socket
8087 + *
8088 + *     nxi:            the socket's nx_info if any
8089 + *     addr:           to be verified address
8090 + */
8091 +static inline
8092 +int v4_sock_addr_match (
8093 +       struct nx_info *nxi,
8094 +       struct inet_sock *inet,
8095 +       __be32 addr)
8096 +{
8097 +       __be32 saddr = inet->inet_rcv_saddr;
8098 +       __be32 bcast = nxi ? nxi->v4_bcast.s_addr : INADDR_BROADCAST;
8099 +
8100 +       if (addr && (saddr == addr || bcast == addr))
8101 +               return 1;
8102 +       if (!saddr)
8103 +               return v4_addr_in_nx_info(nxi, addr, NXA_MASK_BIND);
8104 +       return 0;
8105 +}
8106 +
8107 +
8108 +/* inet related checks and helpers */
8109 +
8110 +
8111 +struct in_ifaddr;
8112 +struct net_device;
8113 +struct sock;
8114 +
8115 +#ifdef CONFIG_INET
8116 +
8117 +#include <linux/netdevice.h>
8118 +#include <linux/inetdevice.h>
8119 +#include <net/inet_sock.h>
8120 +#include <net/inet_timewait_sock.h>
8121 +
8122 +
8123 +int dev_in_nx_info(struct net_device *, struct nx_info *);
8124 +int v4_dev_in_nx_info(struct net_device *, struct nx_info *);
8125 +int nx_v4_addr_conflict(struct nx_info *, struct nx_info *);
8126 +
8127 +
8128 +/*
8129 + *     check if address is covered by socket
8130 + *
8131 + *     sk:     the socket to check against
8132 + *     addr:   the address in question (must be != 0)
8133 + */
8134 +
8135 +static inline
8136 +int __v4_addr_match_socket(const struct sock *sk, struct nx_addr_v4 *nxa)
8137 +{
8138 +       struct nx_info *nxi = sk->sk_nx_info;
8139 +       __be32 saddr = sk->sk_rcv_saddr;
8140 +
8141 +       vxdprintk(VXD_CBIT(net, 5),
8142 +               "__v4_addr_in_socket(%p," NXAV4_FMT ") %p:" NIPQUAD_FMT " %p;%lx",
8143 +               sk, NXAV4(nxa), nxi, NIPQUAD(saddr), sk->sk_socket,
8144 +               (sk->sk_socket?sk->sk_socket->flags:0));
8145 +
8146 +       if (saddr) {            /* direct address match */
8147 +               return v4_addr_match(nxa, saddr, -1);
8148 +       } else if (nxi) {       /* match against nx_info */
8149 +               return v4_nx_addr_in_nx_info(nxi, nxa, -1);
8150 +       } else {                /* unrestricted any socket */
8151 +               return 1;
8152 +       }
8153 +}
8154 +
8155 +
8156 +
8157 +static inline
8158 +int nx_dev_visible(struct nx_info *nxi, struct net_device *dev)
8159 +{
8160 +       vxdprintk(VXD_CBIT(net, 1),
8161 +               "nx_dev_visible(%p[#%u],%p " VS_Q("%s") ") %d",
8162 +               nxi, nxi ? nxi->nx_id : 0, dev, dev->name,
8163 +               nxi ? dev_in_nx_info(dev, nxi) : 0);
8164 +
8165 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8166 +               return 1;
8167 +       if (dev_in_nx_info(dev, nxi))
8168 +               return 1;
8169 +       return 0;
8170 +}
8171 +
8172 +
8173 +static inline
8174 +int v4_ifa_in_nx_info(struct in_ifaddr *ifa, struct nx_info *nxi)
8175 +{
8176 +       if (!nxi)
8177 +               return 1;
8178 +       if (!ifa)
8179 +               return 0;
8180 +       return v4_addr_in_nx_info(nxi, ifa->ifa_local, NXA_MASK_SHOW);
8181 +}
8182 +
8183 +static inline
8184 +int nx_v4_ifa_visible(struct nx_info *nxi, struct in_ifaddr *ifa)
8185 +{
8186 +       vxdprintk(VXD_CBIT(net, 1), "nx_v4_ifa_visible(%p[#%u],%p) %d",
8187 +               nxi, nxi ? nxi->nx_id : 0, ifa,
8188 +               nxi ? v4_ifa_in_nx_info(ifa, nxi) : 0);
8189 +
8190 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8191 +               return 1;
8192 +       if (v4_ifa_in_nx_info(ifa, nxi))
8193 +               return 1;
8194 +       return 0;
8195 +}
8196 +
8197 +
8198 +struct nx_v4_sock_addr {
8199 +       __be32 saddr;   /* Address used for validation */
8200 +       __be32 baddr;   /* Address used for socket bind */
8201 +};
8202 +
8203 +static inline
8204 +int v4_map_sock_addr(struct inet_sock *inet, struct sockaddr_in *addr,
8205 +       struct nx_v4_sock_addr *nsa)
8206 +{
8207 +       struct sock *sk = &inet->sk;
8208 +       struct nx_info *nxi = sk->sk_nx_info;
8209 +       __be32 saddr = addr->sin_addr.s_addr;
8210 +       __be32 baddr = saddr;
8211 +
8212 +       vxdprintk(VXD_CBIT(net, 3),
8213 +               "inet_bind(%p)* %p,%p;%lx " NIPQUAD_FMT,
8214 +               sk, sk->sk_nx_info, sk->sk_socket,
8215 +               (sk->sk_socket ? sk->sk_socket->flags : 0),
8216 +               NIPQUAD(saddr));
8217 +
8218 +       if (nxi) {
8219 +               if (saddr == INADDR_ANY) {
8220 +                       if (nx_info_flags(nxi, NXF_SINGLE_IP, 0))
8221 +                               baddr = nxi->v4.ip[0].s_addr;
8222 +               } else if (saddr == IPI_LOOPBACK) {
8223 +                       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
8224 +                               baddr = nxi->v4_lback.s_addr;
8225 +               } else if (!ipv4_is_multicast(saddr) ||
8226 +                       !nx_info_ncaps(nxi, NXC_MULTICAST)) {
8227 +                       /* normal address bind */
8228 +                       if (!v4_addr_in_nx_info(nxi, saddr, NXA_MASK_BIND))
8229 +                               return -EADDRNOTAVAIL;
8230 +               }
8231 +       }
8232 +
8233 +       vxdprintk(VXD_CBIT(net, 3),
8234 +               "inet_bind(%p) " NIPQUAD_FMT ", " NIPQUAD_FMT,
8235 +               sk, NIPQUAD(saddr), NIPQUAD(baddr));
8236 +
8237 +       nsa->saddr = saddr;
8238 +       nsa->baddr = baddr;
8239 +       return 0;
8240 +}
8241 +
8242 +static inline
8243 +void v4_set_sock_addr(struct inet_sock *inet, struct nx_v4_sock_addr *nsa)
8244 +{
8245 +       inet->inet_saddr = nsa->baddr;
8246 +       inet->inet_rcv_saddr = nsa->baddr;
8247 +}
8248 +
8249 +
8250 +/*
8251 + *      helper to simplify inet_lookup_listener
8252 + *
8253 + *      nxi:   the socket's nx_info if any
8254 + *      addr:  to be verified address
8255 + *      saddr: socket address
8256 + */
8257 +static inline int v4_inet_addr_match (
8258 +       struct nx_info *nxi,
8259 +       __be32 addr,
8260 +       __be32 saddr)
8261 +{
8262 +       if (addr && (saddr == addr))
8263 +               return 1;
8264 +       if (!saddr)
8265 +               return nxi ? v4_addr_in_nx_info(nxi, addr, NXA_MASK_BIND) : 1;
8266 +       return 0;
8267 +}
8268 +
8269 +static inline __be32 nx_map_sock_lback(struct nx_info *nxi, __be32 addr)
8270 +{
8271 +       if (nx_info_flags(nxi, NXF_HIDE_LBACK, 0) &&
8272 +               (addr == nxi->v4_lback.s_addr))
8273 +               return IPI_LOOPBACK;
8274 +       return addr;
8275 +}
8276 +
8277 +static inline
8278 +int nx_info_has_v4(struct nx_info *nxi)
8279 +{
8280 +       if (!nxi)
8281 +               return 1;
8282 +       if (NX_IPV4(nxi))
8283 +               return 1;
8284 +       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
8285 +               return 1;
8286 +       return 0;
8287 +}
8288 +
8289 +#else /* CONFIG_INET */
8290 +
8291 +static inline
8292 +int nx_dev_visible(struct nx_info *n, struct net_device *d)
8293 +{
8294 +       return 1;
8295 +}
8296 +
8297 +static inline
8298 +int nx_v4_addr_conflict(struct nx_info *n, uint32_t a, const struct sock *s)
8299 +{
8300 +       return 1;
8301 +}
8302 +
8303 +static inline
8304 +int v4_ifa_in_nx_info(struct in_ifaddr *a, struct nx_info *n)
8305 +{
8306 +       return 1;
8307 +}
8308 +
8309 +static inline
8310 +int nx_info_has_v4(struct nx_info *nxi)
8311 +{
8312 +       return 0;
8313 +}
8314 +
8315 +#endif /* CONFIG_INET */
8316 +
8317 +#define current_nx_info_has_v4() \
8318 +       nx_info_has_v4(current_nx_info())
8319 +
8320 +#else
8321 +// #warning duplicate inclusion
8322 +#endif
8323 diff -NurpP --minimal linux-4.4.111/include/linux/vs_inet6.h linux-4.4.111-vs2.3.9.5/include/linux/vs_inet6.h
8324 --- linux-4.4.111/include/linux/vs_inet6.h      1970-01-01 00:00:00.000000000 +0000
8325 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_inet6.h    2018-01-09 16:36:32.000000000 +0000
8326 @@ -0,0 +1,257 @@
8327 +#ifndef _VS_INET6_H
8328 +#define _VS_INET6_H
8329 +
8330 +#include "vserver/base.h"
8331 +#include "vserver/network.h"
8332 +#include "vserver/debug.h"
8333 +
8334 +#include <net/ipv6.h>
8335 +
8336 +#define NXAV6(a)       &(a)->ip, &(a)->mask, (a)->prefix, (a)->type
8337 +#define NXAV6_FMT      "[%pI6/%pI6/%d:%04x]"
8338 +
8339 +
8340 +#ifdef CONFIG_IPV6
8341 +
8342 +static inline
8343 +int v6_addr_match(struct nx_addr_v6 *nxa,
8344 +       const struct in6_addr *addr, uint16_t mask)
8345 +{
8346 +       int ret = 0;
8347 +
8348 +       switch (nxa->type & mask) {
8349 +       case NXA_TYPE_MASK:
8350 +               ret = ipv6_masked_addr_cmp(&nxa->ip, &nxa->mask, addr);
8351 +               break;
8352 +       case NXA_TYPE_ADDR:
8353 +               ret = ipv6_addr_equal(&nxa->ip, addr);
8354 +               break;
8355 +       case NXA_TYPE_ANY:
8356 +               ret = 1;
8357 +               break;
8358 +       }
8359 +       vxdprintk(VXD_CBIT(net, 0),
8360 +               "v6_addr_match(%p" NXAV6_FMT ",%pI6,%04x) = %d",
8361 +               nxa, NXAV6(nxa), addr, mask, ret);
8362 +       return ret;
8363 +}
8364 +
8365 +static inline
8366 +int v6_addr_in_nx_info(struct nx_info *nxi,
8367 +       const struct in6_addr *addr, uint16_t mask)
8368 +{
8369 +       struct nx_addr_v6 *nxa;
8370 +       unsigned long irqflags;
8371 +       int ret = 1;
8372 +
8373 +       if (!nxi)
8374 +               goto out;
8375 +
8376 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8377 +       for (nxa = &nxi->v6; nxa; nxa = nxa->next)
8378 +               if (v6_addr_match(nxa, addr, mask))
8379 +                       goto out_unlock;
8380 +       ret = 0;
8381 +out_unlock:
8382 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8383 +out:
8384 +       vxdprintk(VXD_CBIT(net, 0),
8385 +               "v6_addr_in_nx_info(%p[#%u],%pI6,%04x) = %d",
8386 +               nxi, nxi ? nxi->nx_id : 0, addr, mask, ret);
8387 +       return ret;
8388 +}
8389 +
8390 +static inline
8391 +int v6_nx_addr_match(struct nx_addr_v6 *nxa, struct nx_addr_v6 *addr, uint16_t mask)
8392 +{
8393 +       /* FIXME: needs full range checks */
8394 +       return v6_addr_match(nxa, &addr->ip, mask);
8395 +}
8396 +
8397 +static inline
8398 +int v6_nx_addr_in_nx_info(struct nx_info *nxi, struct nx_addr_v6 *nxa, uint16_t mask)
8399 +{
8400 +       struct nx_addr_v6 *ptr;
8401 +       unsigned long irqflags;
8402 +       int ret = 1;
8403 +
8404 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8405 +       for (ptr = &nxi->v6; ptr; ptr = ptr->next)
8406 +               if (v6_nx_addr_match(ptr, nxa, mask))
8407 +                       goto out_unlock;
8408 +       ret = 0;
8409 +out_unlock:
8410 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8411 +       return ret;
8412 +}
8413 +
8414 +
8415 +/*
8416 + *     Check if a given address matches for a socket
8417 + *
8418 + *     nxi:            the socket's nx_info if any
8419 + *     addr:           to be verified address
8420 + */
8421 +static inline
8422 +int v6_sock_addr_match (
8423 +       struct nx_info *nxi,
8424 +       struct inet_sock *inet,
8425 +       struct in6_addr *addr)
8426 +{
8427 +       struct sock *sk = &inet->sk;
8428 +       const struct in6_addr *saddr = inet6_rcv_saddr(sk);
8429 +
8430 +       if (!ipv6_addr_any(addr) &&
8431 +               ipv6_addr_equal(saddr, addr))
8432 +               return 1;
8433 +       if (ipv6_addr_any(saddr))
8434 +               return v6_addr_in_nx_info(nxi, addr, -1);
8435 +       return 0;
8436 +}
8437 +
8438 +/*
8439 + *     check if address is covered by socket
8440 + *
8441 + *     sk:     the socket to check against
8442 + *     addr:   the address in question (must be != 0)
8443 + */
8444 +
8445 +static inline
8446 +int __v6_addr_match_socket(const struct sock *sk, struct nx_addr_v6 *nxa)
8447 +{
8448 +       struct nx_info *nxi = sk->sk_nx_info;
8449 +       const struct in6_addr *saddr = inet6_rcv_saddr(sk);
8450 +
8451 +       vxdprintk(VXD_CBIT(net, 5),
8452 +               "__v6_addr_in_socket(%p," NXAV6_FMT ") %p:%pI6 %p;%lx",
8453 +               sk, NXAV6(nxa), nxi, saddr, sk->sk_socket,
8454 +               (sk->sk_socket?sk->sk_socket->flags:0));
8455 +
8456 +       if (!ipv6_addr_any(saddr)) {    /* direct address match */
8457 +               return v6_addr_match(nxa, saddr, -1);
8458 +       } else if (nxi) {               /* match against nx_info */
8459 +               return v6_nx_addr_in_nx_info(nxi, nxa, -1);
8460 +       } else {                        /* unrestricted any socket */
8461 +               return 1;
8462 +       }
8463 +}
8464 +
8465 +
8466 +/* inet related checks and helpers */
8467 +
8468 +
8469 +struct in_ifaddr;
8470 +struct net_device;
8471 +struct sock;
8472 +
8473 +
8474 +#include <linux/netdevice.h>
8475 +#include <linux/inetdevice.h>
8476 +#include <net/inet_timewait_sock.h>
8477 +
8478 +
8479 +int dev_in_nx_info(struct net_device *, struct nx_info *);
8480 +int v6_dev_in_nx_info(struct net_device *, struct nx_info *);
8481 +int nx_v6_addr_conflict(struct nx_info *, struct nx_info *);
8482 +
8483 +
8484 +
8485 +static inline
8486 +int v6_ifa_in_nx_info(struct inet6_ifaddr *ifa, struct nx_info *nxi)
8487 +{
8488 +       if (!nxi)
8489 +               return 1;
8490 +       if (!ifa)
8491 +               return 0;
8492 +       return v6_addr_in_nx_info(nxi, &ifa->addr, -1);
8493 +}
8494 +
8495 +static inline
8496 +int nx_v6_ifa_visible(struct nx_info *nxi, struct inet6_ifaddr *ifa)
8497 +{
8498 +       vxdprintk(VXD_CBIT(net, 1), "nx_v6_ifa_visible(%p[#%u],%p) %d",
8499 +               nxi, nxi ? nxi->nx_id : 0, ifa,
8500 +               nxi ? v6_ifa_in_nx_info(ifa, nxi) : 0);
8501 +
8502 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8503 +               return 1;
8504 +       if (v6_ifa_in_nx_info(ifa, nxi))
8505 +               return 1;
8506 +       return 0;
8507 +}
8508 +
8509 +
8510 +struct nx_v6_sock_addr {
8511 +       struct in6_addr saddr;  /* Address used for validation */
8512 +       struct in6_addr baddr;  /* Address used for socket bind */
8513 +};
8514 +
8515 +static inline
8516 +int v6_map_sock_addr(struct inet_sock *inet, struct sockaddr_in6 *addr,
8517 +       struct nx_v6_sock_addr *nsa)
8518 +{
8519 +       // struct sock *sk = &inet->sk;
8520 +       // struct nx_info *nxi = sk->sk_nx_info;
8521 +       struct in6_addr saddr = addr->sin6_addr;
8522 +       struct in6_addr baddr = saddr;
8523 +
8524 +       nsa->saddr = saddr;
8525 +       nsa->baddr = baddr;
8526 +       return 0;
8527 +}
8528 +
8529 +static inline
8530 +void v6_set_sock_addr(struct inet_sock *inet, struct nx_v6_sock_addr *nsa)
8531 +{
8532 +       // struct sock *sk = &inet->sk;
8533 +       // struct in6_addr *saddr = inet6_rcv_saddr(sk);
8534 +
8535 +       // *saddr = nsa->baddr;
8536 +       // inet->inet_saddr = nsa->baddr;
8537 +}
8538 +
8539 +static inline
8540 +int nx_info_has_v6(struct nx_info *nxi)
8541 +{
8542 +       if (!nxi)
8543 +               return 1;
8544 +       if (NX_IPV6(nxi))
8545 +               return 1;
8546 +       return 0;
8547 +}
8548 +
8549 +#else /* CONFIG_IPV6 */
8550 +
8551 +static inline
8552 +int nx_v6_dev_visible(struct nx_info *n, struct net_device *d)
8553 +{
8554 +       return 1;
8555 +}
8556 +
8557 +
8558 +static inline
8559 +int nx_v6_addr_conflict(struct nx_info *n, uint32_t a, const struct sock *s)
8560 +{
8561 +       return 1;
8562 +}
8563 +
8564 +static inline
8565 +int v6_ifa_in_nx_info(struct in_ifaddr *a, struct nx_info *n)
8566 +{
8567 +       return 1;
8568 +}
8569 +
8570 +static inline
8571 +int nx_info_has_v6(struct nx_info *nxi)
8572 +{
8573 +       return 0;
8574 +}
8575 +
8576 +#endif /* CONFIG_IPV6 */
8577 +
8578 +#define current_nx_info_has_v6() \
8579 +       nx_info_has_v6(current_nx_info())
8580 +
8581 +#else
8582 +#warning duplicate inclusion
8583 +#endif
8584 diff -NurpP --minimal linux-4.4.111/include/linux/vs_limit.h linux-4.4.111-vs2.3.9.5/include/linux/vs_limit.h
8585 --- linux-4.4.111/include/linux/vs_limit.h      1970-01-01 00:00:00.000000000 +0000
8586 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_limit.h    2018-01-09 16:36:32.000000000 +0000
8587 @@ -0,0 +1,140 @@
8588 +#ifndef _VS_LIMIT_H
8589 +#define _VS_LIMIT_H
8590 +
8591 +#include "vserver/limit.h"
8592 +#include "vserver/base.h"
8593 +#include "vserver/context.h"
8594 +#include "vserver/debug.h"
8595 +#include "vserver/context.h"
8596 +#include "vserver/limit_int.h"
8597 +
8598 +
8599 +#define vx_acc_cres(v, d, p, r) \
8600 +       __vx_acc_cres(v, r, d, p, __FILE__, __LINE__)
8601 +
8602 +#define vx_acc_cres_cond(x, d, p, r) \
8603 +       __vx_acc_cres(((x) == vx_current_xid()) ? current_vx_info() : 0, \
8604 +       r, d, p, __FILE__, __LINE__)
8605 +
8606 +
8607 +#define vx_add_cres(v, a, p, r) \
8608 +       __vx_add_cres(v, r, a, p, __FILE__, __LINE__)
8609 +#define vx_sub_cres(v, a, p, r)                vx_add_cres(v, -(a), p, r)
8610 +
8611 +#define vx_add_cres_cond(x, a, p, r) \
8612 +       __vx_add_cres(((x) == vx_current_xid()) ? current_vx_info() : 0, \
8613 +       r, a, p, __FILE__, __LINE__)
8614 +#define vx_sub_cres_cond(x, a, p, r)   vx_add_cres_cond(x, -(a), p, r)
8615 +
8616 +
8617 +/* process and file limits */
8618 +
8619 +#define vx_nproc_inc(p) \
8620 +       vx_acc_cres((p)->vx_info, 1, p, RLIMIT_NPROC)
8621 +
8622 +#define vx_nproc_dec(p) \
8623 +       vx_acc_cres((p)->vx_info,-1, p, RLIMIT_NPROC)
8624 +
8625 +#define vx_files_inc(f) \
8626 +       vx_acc_cres_cond((f)->f_xid, 1, f, RLIMIT_NOFILE)
8627 +
8628 +#define vx_files_dec(f) \
8629 +       vx_acc_cres_cond((f)->f_xid,-1, f, RLIMIT_NOFILE)
8630 +
8631 +#define vx_locks_inc(l) \
8632 +       vx_acc_cres_cond((l)->fl_xid, 1, l, RLIMIT_LOCKS)
8633 +
8634 +#define vx_locks_dec(l) \
8635 +       vx_acc_cres_cond((l)->fl_xid,-1, l, RLIMIT_LOCKS)
8636 +
8637 +#define vx_openfd_inc(f) \
8638 +       vx_acc_cres(current_vx_info(), 1, (void *)(long)(f), VLIMIT_OPENFD)
8639 +
8640 +#define vx_openfd_dec(f) \
8641 +       vx_acc_cres(current_vx_info(),-1, (void *)(long)(f), VLIMIT_OPENFD)
8642 +
8643 +
8644 +#define vx_cres_avail(v, n, r) \
8645 +       __vx_cres_avail(v, r, n, __FILE__, __LINE__)
8646 +
8647 +
8648 +#define vx_nproc_avail(n) \
8649 +       vx_cres_avail(current_vx_info(), n, RLIMIT_NPROC)
8650 +
8651 +#define vx_files_avail(n) \
8652 +       vx_cres_avail(current_vx_info(), n, RLIMIT_NOFILE)
8653 +
8654 +#define vx_locks_avail(n) \
8655 +       vx_cres_avail(current_vx_info(), n, RLIMIT_LOCKS)
8656 +
8657 +#define vx_openfd_avail(n) \
8658 +       vx_cres_avail(current_vx_info(), n, VLIMIT_OPENFD)
8659 +
8660 +
8661 +/* dentry limits */
8662 +
8663 +#define vx_dentry_inc(d) do {                                          \
8664 +       if (d_count(d) == 1)                                            \
8665 +               vx_acc_cres(current_vx_info(), 1, d, VLIMIT_DENTRY);    \
8666 +       } while (0)
8667 +
8668 +#define vx_dentry_dec(d) do {                                          \
8669 +       if (d_count(d) == 0)                                            \
8670 +               vx_acc_cres(current_vx_info(),-1, d, VLIMIT_DENTRY);    \
8671 +       } while (0)
8672 +
8673 +#define vx_dentry_avail(n) \
8674 +       vx_cres_avail(current_vx_info(), n, VLIMIT_DENTRY)
8675 +
8676 +
8677 +/* socket limits */
8678 +
8679 +#define vx_sock_inc(s) \
8680 +       vx_acc_cres((s)->sk_vx_info, 1, s, VLIMIT_NSOCK)
8681 +
8682 +#define vx_sock_dec(s) \
8683 +       vx_acc_cres((s)->sk_vx_info,-1, s, VLIMIT_NSOCK)
8684 +
8685 +#define vx_sock_avail(n) \
8686 +       vx_cres_avail(current_vx_info(), n, VLIMIT_NSOCK)
8687 +
8688 +
8689 +/* ipc resource limits */
8690 +
8691 +#define vx_ipcmsg_add(v, u, a) \
8692 +       vx_add_cres(v, a, u, RLIMIT_MSGQUEUE)
8693 +
8694 +#define vx_ipcmsg_sub(v, u, a) \
8695 +       vx_sub_cres(v, a, u, RLIMIT_MSGQUEUE)
8696 +
8697 +#define vx_ipcmsg_avail(v, a) \
8698 +       vx_cres_avail(v, a, RLIMIT_MSGQUEUE)
8699 +
8700 +
8701 +#define vx_ipcshm_add(v, k, a) \
8702 +       vx_add_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
8703 +
8704 +#define vx_ipcshm_sub(v, k, a) \
8705 +       vx_sub_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
8706 +
8707 +#define vx_ipcshm_avail(v, a) \
8708 +       vx_cres_avail(v, a, VLIMIT_SHMEM)
8709 +
8710 +
8711 +#define vx_semary_inc(a) \
8712 +       vx_acc_cres(current_vx_info(), 1, a, VLIMIT_SEMARY)
8713 +
8714 +#define vx_semary_dec(a) \
8715 +       vx_acc_cres(current_vx_info(), -1, a, VLIMIT_SEMARY)
8716 +
8717 +
8718 +#define vx_nsems_add(a,n) \
8719 +       vx_add_cres(current_vx_info(), n, a, VLIMIT_NSEMS)
8720 +
8721 +#define vx_nsems_sub(a,n) \
8722 +       vx_sub_cres(current_vx_info(), n, a, VLIMIT_NSEMS)
8723 +
8724 +
8725 +#else
8726 +#warning duplicate inclusion
8727 +#endif
8728 diff -NurpP --minimal linux-4.4.111/include/linux/vs_network.h linux-4.4.111-vs2.3.9.5/include/linux/vs_network.h
8729 --- linux-4.4.111/include/linux/vs_network.h    1970-01-01 00:00:00.000000000 +0000
8730 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_network.h  2018-01-09 16:36:32.000000000 +0000
8731 @@ -0,0 +1,169 @@
8732 +#ifndef _NX_VS_NETWORK_H
8733 +#define _NX_VS_NETWORK_H
8734 +
8735 +#include "vserver/context.h"
8736 +#include "vserver/network.h"
8737 +#include "vserver/base.h"
8738 +#include "vserver/check.h"
8739 +#include "vserver/debug.h"
8740 +
8741 +#include <linux/sched.h>
8742 +
8743 +
8744 +#define get_nx_info(i) __get_nx_info(i, __FILE__, __LINE__)
8745 +
8746 +static inline struct nx_info *__get_nx_info(struct nx_info *nxi,
8747 +       const char *_file, int _line)
8748 +{
8749 +       if (!nxi)
8750 +               return NULL;
8751 +
8752 +       vxlprintk(VXD_CBIT(nid, 2), "get_nx_info(%p[#%d.%d])",
8753 +               nxi, nxi ? nxi->nx_id : 0,
8754 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8755 +               _file, _line);
8756 +
8757 +       atomic_inc(&nxi->nx_usecnt);
8758 +       return nxi;
8759 +}
8760 +
8761 +
8762 +extern void free_nx_info(struct nx_info *);
8763 +
8764 +#define put_nx_info(i) __put_nx_info(i, __FILE__, __LINE__)
8765 +
8766 +static inline void __put_nx_info(struct nx_info *nxi, const char *_file, int _line)
8767 +{
8768 +       if (!nxi)
8769 +               return;
8770 +
8771 +       vxlprintk(VXD_CBIT(nid, 2), "put_nx_info(%p[#%d.%d])",
8772 +               nxi, nxi ? nxi->nx_id : 0,
8773 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8774 +               _file, _line);
8775 +
8776 +       if (atomic_dec_and_test(&nxi->nx_usecnt))
8777 +               free_nx_info(nxi);
8778 +}
8779 +
8780 +
8781 +#define init_nx_info(p, i) __init_nx_info(p, i, __FILE__, __LINE__)
8782 +
8783 +static inline void __init_nx_info(struct nx_info **nxp, struct nx_info *nxi,
8784 +               const char *_file, int _line)
8785 +{
8786 +       if (nxi) {
8787 +               vxlprintk(VXD_CBIT(nid, 3),
8788 +                       "init_nx_info(%p[#%d.%d])",
8789 +                       nxi, nxi ? nxi->nx_id : 0,
8790 +                       nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8791 +                       _file, _line);
8792 +
8793 +               atomic_inc(&nxi->nx_usecnt);
8794 +       }
8795 +       *nxp = nxi;
8796 +}
8797 +
8798 +
8799 +#define set_nx_info(p, i) __set_nx_info(p, i, __FILE__, __LINE__)
8800 +
8801 +static inline void __set_nx_info(struct nx_info **nxp, struct nx_info *nxi,
8802 +       const char *_file, int _line)
8803 +{
8804 +       struct nx_info *nxo;
8805 +
8806 +       if (!nxi)
8807 +               return;
8808 +
8809 +       vxlprintk(VXD_CBIT(nid, 3), "set_nx_info(%p[#%d.%d])",
8810 +               nxi, nxi ? nxi->nx_id : 0,
8811 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8812 +               _file, _line);
8813 +
8814 +       atomic_inc(&nxi->nx_usecnt);
8815 +       nxo = xchg(nxp, nxi);
8816 +       BUG_ON(nxo);
8817 +}
8818 +
8819 +#define clr_nx_info(p) __clr_nx_info(p, __FILE__, __LINE__)
8820 +
8821 +static inline void __clr_nx_info(struct nx_info **nxp,
8822 +       const char *_file, int _line)
8823 +{
8824 +       struct nx_info *nxo;
8825 +
8826 +       nxo = xchg(nxp, NULL);
8827 +       if (!nxo)
8828 +               return;
8829 +
8830 +       vxlprintk(VXD_CBIT(nid, 3), "clr_nx_info(%p[#%d.%d])",
8831 +               nxo, nxo ? nxo->nx_id : 0,
8832 +               nxo ? atomic_read(&nxo->nx_usecnt) : 0,
8833 +               _file, _line);
8834 +
8835 +       if (atomic_dec_and_test(&nxo->nx_usecnt))
8836 +               free_nx_info(nxo);
8837 +}
8838 +
8839 +
8840 +#define claim_nx_info(v, p) __claim_nx_info(v, p, __FILE__, __LINE__)
8841 +
8842 +static inline void __claim_nx_info(struct nx_info *nxi,
8843 +       struct task_struct *task, const char *_file, int _line)
8844 +{
8845 +       vxlprintk(VXD_CBIT(nid, 3), "claim_nx_info(%p[#%d.%d.%d]) %p",
8846 +               nxi, nxi ? nxi->nx_id : 0,
8847 +               nxi?atomic_read(&nxi->nx_usecnt):0,
8848 +               nxi?atomic_read(&nxi->nx_tasks):0,
8849 +               task, _file, _line);
8850 +
8851 +       atomic_inc(&nxi->nx_tasks);
8852 +}
8853 +
8854 +
8855 +extern void unhash_nx_info(struct nx_info *);
8856 +
8857 +#define release_nx_info(v, p) __release_nx_info(v, p, __FILE__, __LINE__)
8858 +
8859 +static inline void __release_nx_info(struct nx_info *nxi,
8860 +       struct task_struct *task, const char *_file, int _line)
8861 +{
8862 +       vxlprintk(VXD_CBIT(nid, 3), "release_nx_info(%p[#%d.%d.%d]) %p",
8863 +               nxi, nxi ? nxi->nx_id : 0,
8864 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8865 +               nxi ? atomic_read(&nxi->nx_tasks) : 0,
8866 +               task, _file, _line);
8867 +
8868 +       might_sleep();
8869 +
8870 +       if (atomic_dec_and_test(&nxi->nx_tasks))
8871 +               unhash_nx_info(nxi);
8872 +}
8873 +
8874 +
8875 +#define task_get_nx_info(i)    __task_get_nx_info(i, __FILE__, __LINE__)
8876 +
8877 +static __inline__ struct nx_info *__task_get_nx_info(struct task_struct *p,
8878 +       const char *_file, int _line)
8879 +{
8880 +       struct nx_info *nxi;
8881 +
8882 +       task_lock(p);
8883 +       vxlprintk(VXD_CBIT(nid, 5), "task_get_nx_info(%p)",
8884 +               p, _file, _line);
8885 +       nxi = __get_nx_info(p->nx_info, _file, _line);
8886 +       task_unlock(p);
8887 +       return nxi;
8888 +}
8889 +
8890 +
8891 +static inline void exit_nx_info(struct task_struct *p)
8892 +{
8893 +       if (p->nx_info)
8894 +               release_nx_info(p->nx_info, p);
8895 +}
8896 +
8897 +
8898 +#else
8899 +#warning duplicate inclusion
8900 +#endif
8901 diff -NurpP --minimal linux-4.4.111/include/linux/vs_pid.h linux-4.4.111-vs2.3.9.5/include/linux/vs_pid.h
8902 --- linux-4.4.111/include/linux/vs_pid.h        1970-01-01 00:00:00.000000000 +0000
8903 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_pid.h      2018-01-09 16:36:32.000000000 +0000
8904 @@ -0,0 +1,50 @@
8905 +#ifndef _VS_PID_H
8906 +#define _VS_PID_H
8907 +
8908 +#include "vserver/base.h"
8909 +#include "vserver/check.h"
8910 +#include "vserver/context.h"
8911 +#include "vserver/debug.h"
8912 +#include "vserver/pid.h"
8913 +#include <linux/pid_namespace.h>
8914 +
8915 +
8916 +#define VXF_FAKE_INIT  (VXF_INFO_INIT | VXF_STATE_INIT)
8917 +
8918 +static inline
8919 +int vx_proc_task_visible(struct task_struct *task)
8920 +{
8921 +       if ((task->pid == 1) &&
8922 +               !vx_flags(VXF_FAKE_INIT, VXF_FAKE_INIT))
8923 +               /* show a blend through init */
8924 +               goto visible;
8925 +       if (vx_check(vx_task_xid(task), VS_WATCH | VS_IDENT))
8926 +               goto visible;
8927 +       return 0;
8928 +visible:
8929 +       return 1;
8930 +}
8931 +
8932 +#define find_task_by_real_pid(pid) find_task_by_pid_ns(pid, &init_pid_ns)
8933 +
8934 +
8935 +static inline
8936 +struct task_struct *vx_get_proc_task(struct inode *inode, struct pid *pid)
8937 +{
8938 +       struct task_struct *task = get_pid_task(pid, PIDTYPE_PID);
8939 +
8940 +       if (task && !vx_proc_task_visible(task)) {
8941 +               vxdprintk(VXD_CBIT(misc, 6),
8942 +                       "dropping task (get) %p[#%u,%u] for %p[#%u,%u]",
8943 +                       task, task->xid, task->pid,
8944 +                       current, current->xid, current->pid);
8945 +               put_task_struct(task);
8946 +               task = NULL;
8947 +       }
8948 +       return task;
8949 +}
8950 +
8951 +
8952 +#else
8953 +#warning duplicate inclusion
8954 +#endif
8955 diff -NurpP --minimal linux-4.4.111/include/linux/vs_sched.h linux-4.4.111-vs2.3.9.5/include/linux/vs_sched.h
8956 --- linux-4.4.111/include/linux/vs_sched.h      1970-01-01 00:00:00.000000000 +0000
8957 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_sched.h    2018-01-09 16:36:32.000000000 +0000
8958 @@ -0,0 +1,40 @@
8959 +#ifndef _VS_SCHED_H
8960 +#define _VS_SCHED_H
8961 +
8962 +#include "vserver/base.h"
8963 +#include "vserver/context.h"
8964 +#include "vserver/sched.h"
8965 +
8966 +
8967 +#define MAX_PRIO_BIAS           20
8968 +#define MIN_PRIO_BIAS          -20
8969 +
8970 +static inline
8971 +int vx_adjust_prio(struct task_struct *p, int prio, int max_user)
8972 +{
8973 +       struct vx_info *vxi = p->vx_info;
8974 +
8975 +       if (vxi)
8976 +               prio += vx_cpu(vxi, sched_pc).prio_bias;
8977 +       return prio;
8978 +}
8979 +
8980 +static inline void vx_account_user(struct vx_info *vxi,
8981 +       cputime_t cputime, int nice)
8982 +{
8983 +       if (!vxi)
8984 +               return;
8985 +       vx_cpu(vxi, sched_pc).user_ticks += cputime;
8986 +}
8987 +
8988 +static inline void vx_account_system(struct vx_info *vxi,
8989 +       cputime_t cputime, int idle)
8990 +{
8991 +       if (!vxi)
8992 +               return;
8993 +       vx_cpu(vxi, sched_pc).sys_ticks += cputime;
8994 +}
8995 +
8996 +#else
8997 +#warning duplicate inclusion
8998 +#endif
8999 diff -NurpP --minimal linux-4.4.111/include/linux/vs_socket.h linux-4.4.111-vs2.3.9.5/include/linux/vs_socket.h
9000 --- linux-4.4.111/include/linux/vs_socket.h     1970-01-01 00:00:00.000000000 +0000
9001 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_socket.h   2018-01-09 16:36:32.000000000 +0000
9002 @@ -0,0 +1,67 @@
9003 +#ifndef _VS_SOCKET_H
9004 +#define _VS_SOCKET_H
9005 +
9006 +#include "vserver/debug.h"
9007 +#include "vserver/base.h"
9008 +#include "vserver/cacct.h"
9009 +#include "vserver/context.h"
9010 +#include "vserver/tag.h"
9011 +
9012 +
9013 +/* socket accounting */
9014 +
9015 +#include <linux/socket.h>
9016 +
9017 +static inline int vx_sock_type(int family)
9018 +{
9019 +       switch (family) {
9020 +       case PF_UNSPEC:
9021 +               return VXA_SOCK_UNSPEC;
9022 +       case PF_UNIX:
9023 +               return VXA_SOCK_UNIX;
9024 +       case PF_INET:
9025 +               return VXA_SOCK_INET;
9026 +       case PF_INET6:
9027 +               return VXA_SOCK_INET6;
9028 +       case PF_PACKET:
9029 +               return VXA_SOCK_PACKET;
9030 +       default:
9031 +               return VXA_SOCK_OTHER;
9032 +       }
9033 +}
9034 +
9035 +#define vx_acc_sock(v, f, p, s) \
9036 +       __vx_acc_sock(v, f, p, s, __FILE__, __LINE__)
9037 +
9038 +static inline void __vx_acc_sock(struct vx_info *vxi,
9039 +       int family, int pos, int size, char *file, int line)
9040 +{
9041 +       if (vxi) {
9042 +               int type = vx_sock_type(family);
9043 +
9044 +               atomic_long_inc(&vxi->cacct.sock[type][pos].count);
9045 +               atomic_long_add(size, &vxi->cacct.sock[type][pos].total);
9046 +       }
9047 +}
9048 +
9049 +#define vx_sock_recv(sk, s) \
9050 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 0, s)
9051 +#define vx_sock_send(sk, s) \
9052 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 1, s)
9053 +#define vx_sock_fail(sk, s) \
9054 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 2, s)
9055 +
9056 +
9057 +#define sock_vx_init(s) do {           \
9058 +       (s)->sk_xid = 0;                \
9059 +       (s)->sk_vx_info = NULL;         \
9060 +       } while (0)
9061 +
9062 +#define sock_nx_init(s) do {           \
9063 +       (s)->sk_nid = 0;                \
9064 +       (s)->sk_nx_info = NULL;         \
9065 +       } while (0)
9066 +
9067 +#else
9068 +#warning duplicate inclusion
9069 +#endif
9070 diff -NurpP --minimal linux-4.4.111/include/linux/vs_tag.h linux-4.4.111-vs2.3.9.5/include/linux/vs_tag.h
9071 --- linux-4.4.111/include/linux/vs_tag.h        1970-01-01 00:00:00.000000000 +0000
9072 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_tag.h      2018-01-09 16:36:32.000000000 +0000
9073 @@ -0,0 +1,47 @@
9074 +#ifndef _VS_TAG_H
9075 +#define _VS_TAG_H
9076 +
9077 +#include <linux/vserver/tag.h>
9078 +
9079 +/* check conditions */
9080 +
9081 +#define DX_ADMIN       0x0001
9082 +#define DX_WATCH       0x0002
9083 +#define DX_HOSTID      0x0008
9084 +
9085 +#define DX_IDENT       0x0010
9086 +
9087 +#define DX_ARG_MASK    0x0010
9088 +
9089 +
9090 +#define dx_task_tag(t) ((t)->tag)
9091 +
9092 +#define dx_current_tag() dx_task_tag(current)
9093 +
9094 +#define dx_check(c, m) __dx_check(dx_current_tag(), c, m)
9095 +
9096 +#define dx_weak_check(c, m)    ((m) ? dx_check(c, m) : 1)
9097 +
9098 +
9099 +/*
9100 + * check current context for ADMIN/WATCH and
9101 + * optionally against supplied argument
9102 + */
9103 +static inline int __dx_check(vtag_t cid, vtag_t id, unsigned int mode)
9104 +{
9105 +       if (mode & DX_ARG_MASK) {
9106 +               if ((mode & DX_IDENT) && (id == cid))
9107 +                       return 1;
9108 +       }
9109 +       return (((mode & DX_ADMIN) && (cid == 0)) ||
9110 +               ((mode & DX_WATCH) && (cid == 1)) ||
9111 +               ((mode & DX_HOSTID) && (id == 0)));
9112 +}
9113 +
9114 +struct inode;
9115 +int dx_permission(const struct inode *inode, int mask);
9116 +
9117 +
9118 +#else
9119 +#warning duplicate inclusion
9120 +#endif
9121 diff -NurpP --minimal linux-4.4.111/include/linux/vs_time.h linux-4.4.111-vs2.3.9.5/include/linux/vs_time.h
9122 --- linux-4.4.111/include/linux/vs_time.h       1970-01-01 00:00:00.000000000 +0000
9123 +++ linux-4.4.111-vs2.3.9.5/include/linux/vs_time.h     2018-01-09 16:36:32.000000000 +0000
9124 @@ -0,0 +1,19 @@
9125 +#ifndef _VS_TIME_H
9126 +#define _VS_TIME_H
9127 +
9128 +
9129 +/* time faking stuff */
9130 +
9131 +#ifdef CONFIG_VSERVER_VTIME
9132 +
9133 +extern void vx_adjust_timespec(struct timespec *ts);
9134 +extern int vx_settimeofday(const struct timespec *ts);
9135 +
9136 +#else
9137 +#define        vx_adjust_timespec(t)   do { } while (0)
9138 +#define        vx_settimeofday(t)      do_settimeofday(t)
9139 +#endif
9140 +
9141 +#else
9142 +#warning duplicate inclusion
9143 +#endif
9144 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/base.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/base.h
9145 --- linux-4.4.111/include/linux/vserver/base.h  1970-01-01 00:00:00.000000000 +0000
9146 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/base.h        2018-01-09 16:36:32.000000000 +0000
9147 @@ -0,0 +1,184 @@
9148 +#ifndef _VSERVER_BASE_H
9149 +#define _VSERVER_BASE_H
9150 +
9151 +
9152 +/* context state changes */
9153 +
9154 +enum {
9155 +       VSC_STARTUP = 1,
9156 +       VSC_SHUTDOWN,
9157 +
9158 +       VSC_NETUP,
9159 +       VSC_NETDOWN,
9160 +};
9161 +
9162 +
9163 +
9164 +#define vx_task_xid(t) ((t)->xid)
9165 +
9166 +#define vx_current_xid() vx_task_xid(current)
9167 +
9168 +#define current_vx_info() (current->vx_info)
9169 +
9170 +
9171 +#define nx_task_nid(t) ((t)->nid)
9172 +
9173 +#define nx_current_nid() nx_task_nid(current)
9174 +
9175 +#define current_nx_info() (current->nx_info)
9176 +
9177 +
9178 +/* generic flag merging */
9179 +
9180 +#define vs_check_flags(v, m, f)        (((v) & (m)) ^ (f))
9181 +
9182 +#define vs_mask_flags(v, f, m) (((v) & ~(m)) | ((f) & (m)))
9183 +
9184 +#define vs_mask_mask(v, f, m)  (((v) & ~(m)) | ((v) & (f) & (m)))
9185 +
9186 +#define vs_check_bit(v, n)     ((v) & (1LL << (n)))
9187 +
9188 +
9189 +/* context flags */
9190 +
9191 +#define __vx_flags(v)  ((v) ? (v)->vx_flags : 0)
9192 +
9193 +#define vx_current_flags()     __vx_flags(current_vx_info())
9194 +
9195 +#define vx_info_flags(v, m, f) \
9196 +       vs_check_flags(__vx_flags(v), m, f)
9197 +
9198 +#define task_vx_flags(t, m, f) \
9199 +       ((t) && vx_info_flags((t)->vx_info, m, f))
9200 +
9201 +#define vx_flags(m, f) vx_info_flags(current_vx_info(), m, f)
9202 +
9203 +
9204 +/* context caps */
9205 +
9206 +#define __vx_ccaps(v)  ((v) ? (v)->vx_ccaps : 0)
9207 +
9208 +#define vx_current_ccaps()     __vx_ccaps(current_vx_info())
9209 +
9210 +#define vx_info_ccaps(v, c)    (__vx_ccaps(v) & (c))
9211 +
9212 +#define vx_ccaps(c)    vx_info_ccaps(current_vx_info(), (c))
9213 +
9214 +
9215 +
9216 +/* network flags */
9217 +
9218 +#define __nx_flags(n)  ((n) ? (n)->nx_flags : 0)
9219 +
9220 +#define nx_current_flags()     __nx_flags(current_nx_info())
9221 +
9222 +#define nx_info_flags(n, m, f) \
9223 +       vs_check_flags(__nx_flags(n), m, f)
9224 +
9225 +#define task_nx_flags(t, m, f) \
9226 +       ((t) && nx_info_flags((t)->nx_info, m, f))
9227 +
9228 +#define nx_flags(m, f) nx_info_flags(current_nx_info(), m, f)
9229 +
9230 +
9231 +/* network caps */
9232 +
9233 +#define __nx_ncaps(n)  ((n) ? (n)->nx_ncaps : 0)
9234 +
9235 +#define nx_current_ncaps()     __nx_ncaps(current_nx_info())
9236 +
9237 +#define nx_info_ncaps(n, c)    (__nx_ncaps(n) & (c))
9238 +
9239 +#define nx_ncaps(c)    nx_info_ncaps(current_nx_info(), c)
9240 +
9241 +
9242 +/* context mask capabilities */
9243 +
9244 +#define __vx_mcaps(v)  ((v) ? (v)->vx_ccaps >> 32UL : ~0 )
9245 +
9246 +#define vx_info_mcaps(v, c)    (__vx_mcaps(v) & (c))
9247 +
9248 +#define vx_mcaps(c)    vx_info_mcaps(current_vx_info(), c)
9249 +
9250 +
9251 +/* context bcap mask */
9252 +
9253 +#define __vx_bcaps(v)          ((v)->vx_bcaps)
9254 +
9255 +#define vx_current_bcaps()     __vx_bcaps(current_vx_info())
9256 +
9257 +
9258 +/* mask given bcaps */
9259 +
9260 +#define vx_info_mbcaps(v, c)   ((v) ? cap_intersect(__vx_bcaps(v), c) : c)
9261 +
9262 +#define vx_mbcaps(c)           vx_info_mbcaps(current_vx_info(), c)
9263 +
9264 +
9265 +/* masked cap_bset */
9266 +
9267 +#define vx_info_cap_bset(v)    vx_info_mbcaps(v, current->cap_bset)
9268 +
9269 +#define vx_current_cap_bset()  vx_info_cap_bset(current_vx_info())
9270 +
9271 +#if 0
9272 +#define vx_info_mbcap(v, b) \
9273 +       (!vx_info_flags(v, VXF_STATE_SETUP, 0) ? \
9274 +       vx_info_bcaps(v, b) : (b))
9275 +
9276 +#define task_vx_mbcap(t, b) \
9277 +       vx_info_mbcap((t)->vx_info, (t)->b)
9278 +
9279 +#define vx_mbcap(b)    task_vx_mbcap(current, b)
9280 +#endif
9281 +
9282 +#define vx_cap_raised(v, c, f) cap_raised(vx_info_mbcaps(v, c), f)
9283 +
9284 +#define vx_capable(b, c) (capable(b) || \
9285 +       (cap_raised(current_cap(), b) && vx_ccaps(c)))
9286 +
9287 +#define vx_ns_capable(n, b, c) (ns_capable(n, b) || \
9288 +       (cap_raised(current_cap(), b) && vx_ccaps(c)))
9289 +
9290 +#define nx_capable(b, c) (capable(b) || \
9291 +       (cap_raised(current_cap(), b) && nx_ncaps(c)))
9292 +
9293 +#define nx_ns_capable(n, b, c) (ns_capable(n, b) || \
9294 +       (cap_raised(current_cap(), b) && nx_ncaps(c)))
9295 +
9296 +#define vx_task_initpid(t, n) \
9297 +       ((t)->vx_info && \
9298 +       ((t)->vx_info->vx_initpid == (n)))
9299 +
9300 +#define vx_current_initpid(n)  vx_task_initpid(current, n)
9301 +
9302 +
9303 +/* context unshare mask */
9304 +
9305 +#define __vx_umask(v)          ((v)->vx_umask)
9306 +
9307 +#define vx_current_umask()     __vx_umask(current_vx_info())
9308 +
9309 +#define vx_can_unshare(b, f) (capable(b) || \
9310 +       (cap_raised(current_cap(), b) && \
9311 +       !((f) & ~vx_current_umask())))
9312 +
9313 +#define vx_ns_can_unshare(n, b, f) (ns_capable(n, b) || \
9314 +       (cap_raised(current_cap(), b) && \
9315 +       !((f) & ~vx_current_umask())))
9316 +
9317 +#define __vx_wmask(v)          ((v)->vx_wmask)
9318 +
9319 +#define vx_current_wmask()     __vx_wmask(current_vx_info())
9320 +
9321 +
9322 +#define __vx_state(v)  ((v) ? ((v)->vx_state) : 0)
9323 +
9324 +#define vx_info_state(v, m)    (__vx_state(v) & (m))
9325 +
9326 +
9327 +#define __nx_state(n)  ((n) ? ((n)->nx_state) : 0)
9328 +
9329 +#define nx_info_state(n, m)    (__nx_state(n) & (m))
9330 +
9331 +#endif
9332 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/cacct.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct.h
9333 --- linux-4.4.111/include/linux/vserver/cacct.h 1970-01-01 00:00:00.000000000 +0000
9334 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct.h       2018-01-09 16:36:32.000000000 +0000
9335 @@ -0,0 +1,15 @@
9336 +#ifndef _VSERVER_CACCT_H
9337 +#define _VSERVER_CACCT_H
9338 +
9339 +
9340 +enum sock_acc_field {
9341 +       VXA_SOCK_UNSPEC = 0,
9342 +       VXA_SOCK_UNIX,
9343 +       VXA_SOCK_INET,
9344 +       VXA_SOCK_INET6,
9345 +       VXA_SOCK_PACKET,
9346 +       VXA_SOCK_OTHER,
9347 +       VXA_SOCK_SIZE   /* array size */
9348 +};
9349 +
9350 +#endif /* _VSERVER_CACCT_H */
9351 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/cacct_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct_cmd.h
9352 --- linux-4.4.111/include/linux/vserver/cacct_cmd.h     1970-01-01 00:00:00.000000000 +0000
9353 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct_cmd.h   2018-01-09 16:36:32.000000000 +0000
9354 @@ -0,0 +1,10 @@
9355 +#ifndef _VSERVER_CACCT_CMD_H
9356 +#define _VSERVER_CACCT_CMD_H
9357 +
9358 +
9359 +#include <linux/compiler.h>
9360 +#include <uapi/vserver/cacct_cmd.h>
9361 +
9362 +extern int vc_sock_stat(struct vx_info *, void __user *);
9363 +
9364 +#endif /* _VSERVER_CACCT_CMD_H */
9365 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/cacct_def.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct_def.h
9366 --- linux-4.4.111/include/linux/vserver/cacct_def.h     1970-01-01 00:00:00.000000000 +0000
9367 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct_def.h   2018-01-09 16:36:32.000000000 +0000
9368 @@ -0,0 +1,43 @@
9369 +#ifndef _VSERVER_CACCT_DEF_H
9370 +#define _VSERVER_CACCT_DEF_H
9371 +
9372 +#include <asm/atomic.h>
9373 +#include <linux/vserver/cacct.h>
9374 +
9375 +
9376 +struct _vx_sock_acc {
9377 +       atomic_long_t count;
9378 +       atomic_long_t total;
9379 +};
9380 +
9381 +/* context sub struct */
9382 +
9383 +struct _vx_cacct {
9384 +       struct _vx_sock_acc sock[VXA_SOCK_SIZE][3];
9385 +       atomic_t slab[8];
9386 +       atomic_t page[6][8];
9387 +};
9388 +
9389 +#ifdef CONFIG_VSERVER_DEBUG
9390 +
9391 +static inline void __dump_vx_cacct(struct _vx_cacct *cacct)
9392 +{
9393 +       int i, j;
9394 +
9395 +       printk("\t_vx_cacct:");
9396 +       for (i = 0; i < 6; i++) {
9397 +               struct _vx_sock_acc *ptr = cacct->sock[i];
9398 +
9399 +               printk("\t [%d] =", i);
9400 +               for (j = 0; j < 3; j++) {
9401 +                       printk(" [%d] = %8lu, %8lu", j,
9402 +                               atomic_long_read(&ptr[j].count),
9403 +                               atomic_long_read(&ptr[j].total));
9404 +               }
9405 +               printk("\n");
9406 +       }
9407 +}
9408 +
9409 +#endif
9410 +
9411 +#endif /* _VSERVER_CACCT_DEF_H */
9412 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/cacct_int.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct_int.h
9413 --- linux-4.4.111/include/linux/vserver/cacct_int.h     1970-01-01 00:00:00.000000000 +0000
9414 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/cacct_int.h   2018-01-09 16:36:32.000000000 +0000
9415 @@ -0,0 +1,17 @@
9416 +#ifndef _VSERVER_CACCT_INT_H
9417 +#define _VSERVER_CACCT_INT_H
9418 +
9419 +static inline
9420 +unsigned long vx_sock_count(struct _vx_cacct *cacct, int type, int pos)
9421 +{
9422 +       return atomic_long_read(&cacct->sock[type][pos].count);
9423 +}
9424 +
9425 +
9426 +static inline
9427 +unsigned long vx_sock_total(struct _vx_cacct *cacct, int type, int pos)
9428 +{
9429 +       return atomic_long_read(&cacct->sock[type][pos].total);
9430 +}
9431 +
9432 +#endif /* _VSERVER_CACCT_INT_H */
9433 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/check.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/check.h
9434 --- linux-4.4.111/include/linux/vserver/check.h 1970-01-01 00:00:00.000000000 +0000
9435 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/check.h       2018-01-09 16:36:32.000000000 +0000
9436 @@ -0,0 +1,89 @@
9437 +#ifndef _VSERVER_CHECK_H
9438 +#define _VSERVER_CHECK_H
9439 +
9440 +
9441 +#define MAX_S_CONTEXT  65535   /* Arbitrary limit */
9442 +
9443 +#ifdef CONFIG_VSERVER_DYNAMIC_IDS
9444 +#define MIN_D_CONTEXT  49152   /* dynamic contexts start here */
9445 +#else
9446 +#define MIN_D_CONTEXT  65536
9447 +#endif
9448 +
9449 +/* check conditions */
9450 +
9451 +#define VS_ADMIN       0x0001
9452 +#define VS_WATCH       0x0002
9453 +#define VS_HIDE                0x0004
9454 +#define VS_HOSTID      0x0008
9455 +
9456 +#define VS_IDENT       0x0010
9457 +#define VS_EQUIV       0x0020
9458 +#define VS_PARENT      0x0040
9459 +#define VS_CHILD       0x0080
9460 +
9461 +#define VS_ARG_MASK    0x00F0
9462 +
9463 +#define VS_DYNAMIC     0x0100
9464 +#define VS_STATIC      0x0200
9465 +
9466 +#define VS_ATR_MASK    0x0F00
9467 +
9468 +#ifdef CONFIG_VSERVER_PRIVACY
9469 +#define VS_ADMIN_P     (0)
9470 +#define VS_WATCH_P     (0)
9471 +#else
9472 +#define VS_ADMIN_P     VS_ADMIN
9473 +#define VS_WATCH_P     VS_WATCH
9474 +#endif
9475 +
9476 +#define VS_HARDIRQ     0x1000
9477 +#define VS_SOFTIRQ     0x2000
9478 +#define VS_IRQ         0x4000
9479 +
9480 +#define VS_IRQ_MASK    0xF000
9481 +
9482 +#include <linux/hardirq.h>
9483 +
9484 +/*
9485 + * check current context for ADMIN/WATCH and
9486 + * optionally against supplied argument
9487 + */
9488 +static inline int __vs_check(int cid, int id, unsigned int mode)
9489 +{
9490 +       if (mode & VS_ARG_MASK) {
9491 +               if ((mode & VS_IDENT) && (id == cid))
9492 +                       return 1;
9493 +       }
9494 +       if (mode & VS_ATR_MASK) {
9495 +               if ((mode & VS_DYNAMIC) &&
9496 +                       (id >= MIN_D_CONTEXT) &&
9497 +                       (id <= MAX_S_CONTEXT))
9498 +                       return 1;
9499 +               if ((mode & VS_STATIC) &&
9500 +                       (id > 1) && (id < MIN_D_CONTEXT))
9501 +                       return 1;
9502 +       }
9503 +       if (mode & VS_IRQ_MASK) {
9504 +               if ((mode & VS_IRQ) && unlikely(in_interrupt()))
9505 +                       return 1;
9506 +               if ((mode & VS_HARDIRQ) && unlikely(in_irq()))
9507 +                       return 1;
9508 +               if ((mode & VS_SOFTIRQ) && unlikely(in_softirq()))
9509 +                       return 1;
9510 +       }
9511 +       return (((mode & VS_ADMIN) && (cid == 0)) ||
9512 +               ((mode & VS_WATCH) && (cid == 1)) ||
9513 +               ((mode & VS_HOSTID) && (id == 0)));
9514 +}
9515 +
9516 +#define vx_check(c, m) __vs_check(vx_current_xid(), c, (m) | VS_IRQ)
9517 +
9518 +#define vx_weak_check(c, m)    ((m) ? vx_check(c, m) : 1)
9519 +
9520 +
9521 +#define nx_check(c, m) __vs_check(nx_current_nid(), c, m)
9522 +
9523 +#define nx_weak_check(c, m)    ((m) ? nx_check(c, m) : 1)
9524 +
9525 +#endif
9526 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/context.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/context.h
9527 --- linux-4.4.111/include/linux/vserver/context.h       1970-01-01 00:00:00.000000000 +0000
9528 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/context.h     2018-01-09 16:36:32.000000000 +0000
9529 @@ -0,0 +1,110 @@
9530 +#ifndef _VSERVER_CONTEXT_H
9531 +#define _VSERVER_CONTEXT_H
9532 +
9533 +
9534 +#include <linux/list.h>
9535 +#include <linux/spinlock.h>
9536 +#include <linux/rcupdate.h>
9537 +#include <uapi/vserver/context.h>
9538 +
9539 +#include "limit_def.h"
9540 +#include "sched_def.h"
9541 +#include "cvirt_def.h"
9542 +#include "cacct_def.h"
9543 +#include "device_def.h"
9544 +
9545 +#define VX_SPACES      2
9546 +
9547 +struct _vx_info_pc {
9548 +       struct _vx_sched_pc sched_pc;
9549 +       struct _vx_cvirt_pc cvirt_pc;
9550 +};
9551 +
9552 +struct _vx_space {
9553 +       unsigned long vx_nsmask;                /* assignment mask */
9554 +       struct nsproxy *vx_nsproxy;             /* private namespaces */
9555 +       struct fs_struct *vx_fs;                /* private namespace fs */
9556 +       const struct cred *vx_cred;             /* task credentials */
9557 +};
9558 +
9559 +struct vx_info {
9560 +       struct hlist_node vx_hlist;             /* linked list of contexts */
9561 +       vxid_t vx_id;                           /* context id */
9562 +       atomic_t vx_usecnt;                     /* usage count */
9563 +       atomic_t vx_tasks;                      /* tasks count */
9564 +       struct vx_info *vx_parent;              /* parent context */
9565 +       int vx_state;                           /* context state */
9566 +
9567 +       struct _vx_space space[VX_SPACES];      /* namespace store */
9568 +
9569 +       uint64_t vx_flags;                      /* context flags */
9570 +       uint64_t vx_ccaps;                      /* context caps (vserver) */
9571 +       uint64_t vx_umask;                      /* unshare mask (guest) */
9572 +       uint64_t vx_wmask;                      /* warn mask (guest) */
9573 +       kernel_cap_t vx_bcaps;                  /* bounding caps (system) */
9574 +
9575 +       struct task_struct *vx_reaper;          /* guest reaper process */
9576 +       pid_t vx_initpid;                       /* PID of guest init */
9577 +       int64_t vx_badness_bias;                /* OOM points bias */
9578 +
9579 +       struct _vx_limit limit;                 /* vserver limits */
9580 +       struct _vx_sched sched;                 /* vserver scheduler */
9581 +       struct _vx_cvirt cvirt;                 /* virtual/bias stuff */
9582 +       struct _vx_cacct cacct;                 /* context accounting */
9583 +
9584 +       struct _vx_device dmap;                 /* default device map targets */
9585 +
9586 +#ifndef CONFIG_SMP
9587 +       struct _vx_info_pc info_pc;             /* per cpu data */
9588 +#else
9589 +       struct _vx_info_pc *ptr_pc;             /* per cpu array */
9590 +#endif
9591 +
9592 +       wait_queue_head_t vx_wait;              /* context exit waitqueue */
9593 +       int reboot_cmd;                         /* last sys_reboot() cmd */
9594 +       int exit_code;                          /* last process exit code */
9595 +
9596 +       char vx_name[65];                       /* vserver name */
9597 +};
9598 +
9599 +#ifndef CONFIG_SMP
9600 +#define        vx_ptr_pc(vxi)          (&(vxi)->info_pc)
9601 +#define        vx_per_cpu(vxi, v, id)  vx_ptr_pc(vxi)->v
9602 +#else
9603 +#define        vx_ptr_pc(vxi)          ((vxi)->ptr_pc)
9604 +#define        vx_per_cpu(vxi, v, id)  per_cpu_ptr(vx_ptr_pc(vxi), id)->v
9605 +#endif
9606 +
9607 +#define        vx_cpu(vxi, v)          vx_per_cpu(vxi, v, smp_processor_id())
9608 +
9609 +
9610 +struct vx_info_save {
9611 +       struct vx_info *vxi;
9612 +       vxid_t xid;
9613 +};
9614 +
9615 +
9616 +/* status flags */
9617 +
9618 +#define VXS_HASHED     0x0001
9619 +#define VXS_PAUSED     0x0010
9620 +#define VXS_SHUTDOWN   0x0100
9621 +#define VXS_HELPER     0x1000
9622 +#define VXS_RELEASED   0x8000
9623 +
9624 +
9625 +extern void claim_vx_info(struct vx_info *, struct task_struct *);
9626 +extern void release_vx_info(struct vx_info *, struct task_struct *);
9627 +
9628 +extern struct vx_info *lookup_vx_info(int);
9629 +extern struct vx_info *lookup_or_create_vx_info(int);
9630 +
9631 +extern int get_xid_list(int, unsigned int *, int);
9632 +extern int xid_is_hashed(vxid_t);
9633 +
9634 +extern int vx_migrate_task(struct task_struct *, struct vx_info *, int);
9635 +
9636 +extern long vs_state_change(struct vx_info *, unsigned int);
9637 +
9638 +
9639 +#endif /* _VSERVER_CONTEXT_H */
9640 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/context_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/context_cmd.h
9641 --- linux-4.4.111/include/linux/vserver/context_cmd.h   1970-01-01 00:00:00.000000000 +0000
9642 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/context_cmd.h 2018-01-09 16:36:32.000000000 +0000
9643 @@ -0,0 +1,33 @@
9644 +#ifndef _VSERVER_CONTEXT_CMD_H
9645 +#define _VSERVER_CONTEXT_CMD_H
9646 +
9647 +#include <uapi/vserver/context_cmd.h>
9648 +
9649 +extern int vc_task_xid(uint32_t);
9650 +
9651 +extern int vc_vx_info(struct vx_info *, void __user *);
9652 +
9653 +extern int vc_ctx_stat(struct vx_info *, void __user *);
9654 +
9655 +extern int vc_ctx_create(uint32_t, void __user *);
9656 +extern int vc_ctx_migrate(struct vx_info *, void __user *);
9657 +
9658 +extern int vc_get_cflags(struct vx_info *, void __user *);
9659 +extern int vc_set_cflags(struct vx_info *, void __user *);
9660 +
9661 +extern int vc_get_ccaps(struct vx_info *, void __user *);
9662 +extern int vc_set_ccaps(struct vx_info *, void __user *);
9663 +
9664 +extern int vc_get_bcaps(struct vx_info *, void __user *);
9665 +extern int vc_set_bcaps(struct vx_info *, void __user *);
9666 +
9667 +extern int vc_get_umask(struct vx_info *, void __user *);
9668 +extern int vc_set_umask(struct vx_info *, void __user *);
9669 +
9670 +extern int vc_get_wmask(struct vx_info *, void __user *);
9671 +extern int vc_set_wmask(struct vx_info *, void __user *);
9672 +
9673 +extern int vc_get_badness(struct vx_info *, void __user *);
9674 +extern int vc_set_badness(struct vx_info *, void __user *);
9675 +
9676 +#endif /* _VSERVER_CONTEXT_CMD_H */
9677 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/cvirt.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/cvirt.h
9678 --- linux-4.4.111/include/linux/vserver/cvirt.h 1970-01-01 00:00:00.000000000 +0000
9679 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/cvirt.h       2018-01-09 16:36:32.000000000 +0000
9680 @@ -0,0 +1,18 @@
9681 +#ifndef _VSERVER_CVIRT_H
9682 +#define _VSERVER_CVIRT_H
9683 +
9684 +struct timespec;
9685 +
9686 +void vx_vsi_boottime(struct timespec *);
9687 +
9688 +void vx_vsi_uptime(struct timespec *, struct timespec *);
9689 +
9690 +
9691 +struct vx_info;
9692 +
9693 +void vx_update_load(struct vx_info *);
9694 +
9695 +
9696 +int vx_do_syslog(int, char __user *, int);
9697 +
9698 +#endif /* _VSERVER_CVIRT_H */
9699 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/cvirt_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/cvirt_cmd.h
9700 --- linux-4.4.111/include/linux/vserver/cvirt_cmd.h     1970-01-01 00:00:00.000000000 +0000
9701 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/cvirt_cmd.h   2018-01-09 16:36:32.000000000 +0000
9702 @@ -0,0 +1,13 @@
9703 +#ifndef _VSERVER_CVIRT_CMD_H
9704 +#define _VSERVER_CVIRT_CMD_H
9705 +
9706 +
9707 +#include <linux/compiler.h>
9708 +#include <uapi/vserver/cvirt_cmd.h>
9709 +
9710 +extern int vc_set_vhi_name(struct vx_info *, void __user *);
9711 +extern int vc_get_vhi_name(struct vx_info *, void __user *);
9712 +
9713 +extern int vc_virt_stat(struct vx_info *, void __user *);
9714 +
9715 +#endif /* _VSERVER_CVIRT_CMD_H */
9716 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/cvirt_def.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/cvirt_def.h
9717 --- linux-4.4.111/include/linux/vserver/cvirt_def.h     1970-01-01 00:00:00.000000000 +0000
9718 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/cvirt_def.h   2018-01-09 16:36:32.000000000 +0000
9719 @@ -0,0 +1,80 @@
9720 +#ifndef _VSERVER_CVIRT_DEF_H
9721 +#define _VSERVER_CVIRT_DEF_H
9722 +
9723 +#include <linux/jiffies.h>
9724 +#include <linux/spinlock.h>
9725 +#include <linux/wait.h>
9726 +#include <linux/time.h>
9727 +#include <asm/atomic.h>
9728 +
9729 +
9730 +struct _vx_usage_stat {
9731 +       uint64_t user;
9732 +       uint64_t nice;
9733 +       uint64_t system;
9734 +       uint64_t softirq;
9735 +       uint64_t irq;
9736 +       uint64_t idle;
9737 +       uint64_t iowait;
9738 +};
9739 +
9740 +struct _vx_syslog {
9741 +       wait_queue_head_t log_wait;
9742 +       spinlock_t logbuf_lock;         /* lock for the log buffer */
9743 +
9744 +       unsigned long log_start;        /* next char to be read by syslog() */
9745 +       unsigned long con_start;        /* next char to be sent to consoles */
9746 +       unsigned long log_end;  /* most-recently-written-char + 1 */
9747 +       unsigned long logged_chars;     /* #chars since last read+clear operation */
9748 +
9749 +       char log_buf[1024];
9750 +};
9751 +
9752 +
9753 +/* context sub struct */
9754 +
9755 +struct _vx_cvirt {
9756 +       atomic_t nr_threads;            /* number of current threads */
9757 +       atomic_t nr_running;            /* number of running threads */
9758 +       atomic_t nr_uninterruptible;    /* number of uninterruptible threads */
9759 +
9760 +       atomic_t nr_onhold;             /* processes on hold */
9761 +       uint32_t onhold_last;           /* jiffies when put on hold */
9762 +
9763 +       struct timespec bias_ts;        /* time offset to the host */
9764 +       struct timespec bias_idle;
9765 +       struct timespec bias_uptime;    /* context creation point */
9766 +       uint64_t bias_clock;            /* offset in clock_t */
9767 +
9768 +       spinlock_t load_lock;           /* lock for the load averages */
9769 +       atomic_t load_updates;          /* nr of load updates done so far */
9770 +       uint32_t load_last;             /* last time load was calculated */
9771 +       uint32_t load[3];               /* load averages 1,5,15 */
9772 +
9773 +       atomic_t total_forks;           /* number of forks so far */
9774 +
9775 +       struct _vx_syslog syslog;
9776 +};
9777 +
9778 +struct _vx_cvirt_pc {
9779 +       struct _vx_usage_stat cpustat;
9780 +};
9781 +
9782 +
9783 +#ifdef CONFIG_VSERVER_DEBUG
9784 +
9785 +static inline void __dump_vx_cvirt(struct _vx_cvirt *cvirt)
9786 +{
9787 +       printk("\t_vx_cvirt:\n");
9788 +       printk("\t threads: %4d, %4d, %4d, %4d\n",
9789 +               atomic_read(&cvirt->nr_threads),
9790 +               atomic_read(&cvirt->nr_running),
9791 +               atomic_read(&cvirt->nr_uninterruptible),
9792 +               atomic_read(&cvirt->nr_onhold));
9793 +       /* add rest here */
9794 +       printk("\t total_forks = %d\n", atomic_read(&cvirt->total_forks));
9795 +}
9796 +
9797 +#endif
9798 +
9799 +#endif /* _VSERVER_CVIRT_DEF_H */
9800 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/debug.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/debug.h
9801 --- linux-4.4.111/include/linux/vserver/debug.h 1970-01-01 00:00:00.000000000 +0000
9802 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/debug.h       2018-01-09 16:36:32.000000000 +0000
9803 @@ -0,0 +1,146 @@
9804 +#ifndef _VSERVER_DEBUG_H
9805 +#define _VSERVER_DEBUG_H
9806 +
9807 +
9808 +#define VXD_CBIT(n, m) (vs_debug_ ## n & (1 << (m)))
9809 +#define VXD_CMIN(n, m) (vs_debug_ ## n > (m))
9810 +#define VXD_MASK(n, m) (vs_debug_ ## n & (m))
9811 +
9812 +#define VXD_DEV(d)     (d), (d)->bd_inode->i_ino,              \
9813 +                       imajor((d)->bd_inode), iminor((d)->bd_inode)
9814 +#define VXF_DEV                "%p[%lu,%d:%d]"
9815 +
9816 +#if    defined(CONFIG_QUOTES_UTF8)
9817 +#define        VS_Q_LQM        "\xc2\xbb"
9818 +#define        VS_Q_RQM        "\xc2\xab"
9819 +#elif  defined(CONFIG_QUOTES_ASCII)
9820 +#define        VS_Q_LQM        "\x27"
9821 +#define        VS_Q_RQM        "\x27"
9822 +#else
9823 +#define        VS_Q_LQM        "\xbb"
9824 +#define        VS_Q_RQM        "\xab"
9825 +#endif
9826 +
9827 +#define        VS_Q(f)         VS_Q_LQM f VS_Q_RQM
9828 +
9829 +
9830 +#define vxd_path(p)                                            \
9831 +       ({ static char _buffer[PATH_MAX];                       \
9832 +          d_path(p, _buffer, sizeof(_buffer)); })
9833 +
9834 +#define vxd_cond_path(n)                                       \
9835 +       ((n) ? vxd_path(&(n)->path) : "<null>" )
9836 +
9837 +
9838 +#ifdef CONFIG_VSERVER_DEBUG
9839 +
9840 +extern unsigned int vs_debug_switch;
9841 +extern unsigned int vs_debug_xid;
9842 +extern unsigned int vs_debug_nid;
9843 +extern unsigned int vs_debug_tag;
9844 +extern unsigned int vs_debug_net;
9845 +extern unsigned int vs_debug_limit;
9846 +extern unsigned int vs_debug_cres;
9847 +extern unsigned int vs_debug_dlim;
9848 +extern unsigned int vs_debug_quota;
9849 +extern unsigned int vs_debug_cvirt;
9850 +extern unsigned int vs_debug_space;
9851 +extern unsigned int vs_debug_perm;
9852 +extern unsigned int vs_debug_misc;
9853 +
9854 +
9855 +#define VX_LOGLEVEL    "vxD: "
9856 +#define VX_PROC_FMT    "%p: "
9857 +#define VX_PROCESS     current
9858 +
9859 +#define vxdprintk(c, f, x...)                                  \
9860 +       do {                                                    \
9861 +               if (c)                                          \
9862 +                       printk(VX_LOGLEVEL VX_PROC_FMT f "\n",  \
9863 +                               VX_PROCESS , ##x);              \
9864 +       } while (0)
9865 +
9866 +#define vxlprintk(c, f, x...)                                  \
9867 +       do {                                                    \
9868 +               if (c)                                          \
9869 +                       printk(VX_LOGLEVEL f " @%s:%d\n", x);   \
9870 +       } while (0)
9871 +
9872 +#define vxfprintk(c, f, x...)                                  \
9873 +       do {                                                    \
9874 +               if (c)                                          \
9875 +                       printk(VX_LOGLEVEL f " %s@%s:%d\n", x); \
9876 +       } while (0)
9877 +
9878 +
9879 +struct vx_info;
9880 +
9881 +void dump_vx_info(struct vx_info *, int);
9882 +void dump_vx_info_inactive(int);
9883 +
9884 +#else  /* CONFIG_VSERVER_DEBUG */
9885 +
9886 +#define vs_debug_switch        0
9887 +#define vs_debug_xid   0
9888 +#define vs_debug_nid   0
9889 +#define vs_debug_tag   0
9890 +#define vs_debug_net   0
9891 +#define vs_debug_limit 0
9892 +#define vs_debug_cres  0
9893 +#define vs_debug_dlim  0
9894 +#define vs_debug_quota 0
9895 +#define vs_debug_cvirt 0
9896 +#define vs_debug_space 0
9897 +#define vs_debug_perm  0
9898 +#define vs_debug_misc  0
9899 +
9900 +#define vxdprintk(x...) do { } while (0)
9901 +#define vxlprintk(x...) do { } while (0)
9902 +#define vxfprintk(x...) do { } while (0)
9903 +
9904 +#endif /* CONFIG_VSERVER_DEBUG */
9905 +
9906 +
9907 +#ifdef CONFIG_VSERVER_WARN
9908 +
9909 +#define VX_WARNLEVEL   KERN_WARNING "vxW: "
9910 +#define VX_WARN_TASK   "[" VS_Q("%s") ",%u:#%u|%u|%u] "
9911 +#define VX_WARN_XID    "[xid #%u] "
9912 +#define VX_WARN_NID    "[nid #%u] "
9913 +#define VX_WARN_TAG    "[tag #%u] "
9914 +
9915 +#define vxwprintk(c, f, x...)                                  \
9916 +       do {                                                    \
9917 +               if (c)                                          \
9918 +                       printk(VX_WARNLEVEL f "\n", ##x);       \
9919 +       } while (0)
9920 +
9921 +#else  /* CONFIG_VSERVER_WARN */
9922 +
9923 +#define vxwprintk(x...) do { } while (0)
9924 +
9925 +#endif /* CONFIG_VSERVER_WARN */
9926 +
9927 +#define vxwprintk_task(c, f, x...)                             \
9928 +       vxwprintk(c, VX_WARN_TASK f,                            \
9929 +               current->comm, current->pid,                    \
9930 +               current->xid, current->nid,                     \
9931 +               current->tag, ##x)
9932 +#define vxwprintk_xid(c, f, x...)                              \
9933 +       vxwprintk(c, VX_WARN_XID f, current->xid, x)
9934 +#define vxwprintk_nid(c, f, x...)                              \
9935 +       vxwprintk(c, VX_WARN_NID f, current->nid, x)
9936 +#define vxwprintk_tag(c, f, x...)                              \
9937 +       vxwprintk(c, VX_WARN_TAG f, current->tag, x)
9938 +
9939 +#ifdef CONFIG_VSERVER_DEBUG
9940 +#define vxd_assert_lock(l)     assert_spin_locked(l)
9941 +#define vxd_assert(c, f, x...) vxlprintk(!(c), \
9942 +       "assertion [" f "] failed.", ##x, __FILE__, __LINE__)
9943 +#else
9944 +#define vxd_assert_lock(l)     do { } while (0)
9945 +#define vxd_assert(c, f, x...) do { } while (0)
9946 +#endif
9947 +
9948 +
9949 +#endif /* _VSERVER_DEBUG_H */
9950 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/debug_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/debug_cmd.h
9951 --- linux-4.4.111/include/linux/vserver/debug_cmd.h     1970-01-01 00:00:00.000000000 +0000
9952 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/debug_cmd.h   2018-01-09 16:36:32.000000000 +0000
9953 @@ -0,0 +1,37 @@
9954 +#ifndef _VSERVER_DEBUG_CMD_H
9955 +#define _VSERVER_DEBUG_CMD_H
9956 +
9957 +#include <uapi/vserver/debug_cmd.h>
9958 +
9959 +
9960 +#ifdef CONFIG_COMPAT
9961 +
9962 +#include <asm/compat.h>
9963 +
9964 +struct vcmd_read_history_v0_x32 {
9965 +       uint32_t index;
9966 +       uint32_t count;
9967 +       compat_uptr_t data_ptr;
9968 +};
9969 +
9970 +struct vcmd_read_monitor_v0_x32 {
9971 +       uint32_t index;
9972 +       uint32_t count;
9973 +       compat_uptr_t data_ptr;
9974 +};
9975 +
9976 +#endif  /* CONFIG_COMPAT */
9977 +
9978 +extern int vc_dump_history(uint32_t);
9979 +
9980 +extern int vc_read_history(uint32_t, void __user *);
9981 +extern int vc_read_monitor(uint32_t, void __user *);
9982 +
9983 +#ifdef CONFIG_COMPAT
9984 +
9985 +extern int vc_read_history_x32(uint32_t, void __user *);
9986 +extern int vc_read_monitor_x32(uint32_t, void __user *);
9987 +
9988 +#endif  /* CONFIG_COMPAT */
9989 +
9990 +#endif /* _VSERVER_DEBUG_CMD_H */
9991 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/device.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/device.h
9992 --- linux-4.4.111/include/linux/vserver/device.h        1970-01-01 00:00:00.000000000 +0000
9993 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/device.h      2018-01-09 16:36:32.000000000 +0000
9994 @@ -0,0 +1,9 @@
9995 +#ifndef _VSERVER_DEVICE_H
9996 +#define _VSERVER_DEVICE_H
9997 +
9998 +
9999 +#include <uapi/vserver/device.h>
10000 +
10001 +#else  /* _VSERVER_DEVICE_H */
10002 +#warning duplicate inclusion
10003 +#endif /* _VSERVER_DEVICE_H */
10004 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/device_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/device_cmd.h
10005 --- linux-4.4.111/include/linux/vserver/device_cmd.h    1970-01-01 00:00:00.000000000 +0000
10006 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/device_cmd.h  2018-01-09 16:36:32.000000000 +0000
10007 @@ -0,0 +1,31 @@
10008 +#ifndef _VSERVER_DEVICE_CMD_H
10009 +#define _VSERVER_DEVICE_CMD_H
10010 +
10011 +#include <uapi/vserver/device_cmd.h>
10012 +
10013 +
10014 +#ifdef CONFIG_COMPAT
10015 +
10016 +#include <asm/compat.h>
10017 +
10018 +struct vcmd_set_mapping_v0_x32 {
10019 +       compat_uptr_t device_ptr;
10020 +       compat_uptr_t target_ptr;
10021 +       uint32_t flags;
10022 +};
10023 +
10024 +#endif /* CONFIG_COMPAT */
10025 +
10026 +#include <linux/compiler.h>
10027 +
10028 +extern int vc_set_mapping(struct vx_info *, void __user *);
10029 +extern int vc_unset_mapping(struct vx_info *, void __user *);
10030 +
10031 +#ifdef CONFIG_COMPAT
10032 +
10033 +extern int vc_set_mapping_x32(struct vx_info *, void __user *);
10034 +extern int vc_unset_mapping_x32(struct vx_info *, void __user *);
10035 +
10036 +#endif /* CONFIG_COMPAT */
10037 +
10038 +#endif /* _VSERVER_DEVICE_CMD_H */
10039 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/device_def.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/device_def.h
10040 --- linux-4.4.111/include/linux/vserver/device_def.h    1970-01-01 00:00:00.000000000 +0000
10041 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/device_def.h  2018-01-09 16:36:32.000000000 +0000
10042 @@ -0,0 +1,17 @@
10043 +#ifndef _VSERVER_DEVICE_DEF_H
10044 +#define _VSERVER_DEVICE_DEF_H
10045 +
10046 +#include <linux/types.h>
10047 +
10048 +struct vx_dmap_target {
10049 +       dev_t target;
10050 +       uint32_t flags;
10051 +};
10052 +
10053 +struct _vx_device {
10054 +#ifdef CONFIG_VSERVER_DEVICE
10055 +       struct vx_dmap_target targets[2];
10056 +#endif
10057 +};
10058 +
10059 +#endif /* _VSERVER_DEVICE_DEF_H */
10060 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/dlimit.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/dlimit.h
10061 --- linux-4.4.111/include/linux/vserver/dlimit.h        1970-01-01 00:00:00.000000000 +0000
10062 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/dlimit.h      2018-01-09 16:36:32.000000000 +0000
10063 @@ -0,0 +1,54 @@
10064 +#ifndef _VSERVER_DLIMIT_H
10065 +#define _VSERVER_DLIMIT_H
10066 +
10067 +#include "switch.h"
10068 +
10069 +
10070 +#ifdef __KERNEL__
10071 +
10072 +/*      keep in sync with CDLIM_INFINITY       */
10073 +
10074 +#define DLIM_INFINITY          (~0ULL)
10075 +
10076 +#include <linux/spinlock.h>
10077 +#include <linux/rcupdate.h>
10078 +
10079 +struct super_block;
10080 +
10081 +struct dl_info {
10082 +       struct hlist_node dl_hlist;             /* linked list of contexts */
10083 +       struct rcu_head dl_rcu;                 /* the rcu head */
10084 +       vtag_t dl_tag;                          /* context tag */
10085 +       atomic_t dl_usecnt;                     /* usage count */
10086 +       atomic_t dl_refcnt;                     /* reference count */
10087 +
10088 +       struct super_block *dl_sb;              /* associated superblock */
10089 +
10090 +       spinlock_t dl_lock;                     /* protect the values */
10091 +
10092 +       unsigned long long dl_space_used;       /* used space in bytes */
10093 +       unsigned long long dl_space_total;      /* maximum space in bytes */
10094 +       unsigned long dl_inodes_used;           /* used inodes */
10095 +       unsigned long dl_inodes_total;          /* maximum inodes */
10096 +
10097 +       unsigned int dl_nrlmult;                /* non root limit mult */
10098 +};
10099 +
10100 +struct rcu_head;
10101 +
10102 +extern void rcu_free_dl_info(struct rcu_head *);
10103 +extern void unhash_dl_info(struct dl_info *);
10104 +
10105 +extern struct dl_info *locate_dl_info(struct super_block *, vtag_t);
10106 +
10107 +
10108 +struct kstatfs;
10109 +
10110 +extern void vx_vsi_statfs(struct super_block *, struct kstatfs *);
10111 +
10112 +typedef uint64_t dlsize_t;
10113 +
10114 +#endif /* __KERNEL__ */
10115 +#else  /* _VSERVER_DLIMIT_H */
10116 +#warning duplicate inclusion
10117 +#endif /* _VSERVER_DLIMIT_H */
10118 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/dlimit_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/dlimit_cmd.h
10119 --- linux-4.4.111/include/linux/vserver/dlimit_cmd.h    1970-01-01 00:00:00.000000000 +0000
10120 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/dlimit_cmd.h  2018-01-09 16:36:32.000000000 +0000
10121 @@ -0,0 +1,46 @@
10122 +#ifndef _VSERVER_DLIMIT_CMD_H
10123 +#define _VSERVER_DLIMIT_CMD_H
10124 +
10125 +#include <uapi/vserver/dlimit_cmd.h>
10126 +
10127 +
10128 +#ifdef CONFIG_COMPAT
10129 +
10130 +#include <asm/compat.h>
10131 +
10132 +struct vcmd_ctx_dlimit_base_v0_x32 {
10133 +       compat_uptr_t name_ptr;
10134 +       uint32_t flags;
10135 +};
10136 +
10137 +struct vcmd_ctx_dlimit_v0_x32 {
10138 +       compat_uptr_t name_ptr;
10139 +       uint32_t space_used;                    /* used space in kbytes */
10140 +       uint32_t space_total;                   /* maximum space in kbytes */
10141 +       uint32_t inodes_used;                   /* used inodes */
10142 +       uint32_t inodes_total;                  /* maximum inodes */
10143 +       uint32_t reserved;                      /* reserved for root in % */
10144 +       uint32_t flags;
10145 +};
10146 +
10147 +#endif /* CONFIG_COMPAT */
10148 +
10149 +#include <linux/compiler.h>
10150 +
10151 +extern int vc_add_dlimit(uint32_t, void __user *);
10152 +extern int vc_rem_dlimit(uint32_t, void __user *);
10153 +
10154 +extern int vc_set_dlimit(uint32_t, void __user *);
10155 +extern int vc_get_dlimit(uint32_t, void __user *);
10156 +
10157 +#ifdef CONFIG_COMPAT
10158 +
10159 +extern int vc_add_dlimit_x32(uint32_t, void __user *);
10160 +extern int vc_rem_dlimit_x32(uint32_t, void __user *);
10161 +
10162 +extern int vc_set_dlimit_x32(uint32_t, void __user *);
10163 +extern int vc_get_dlimit_x32(uint32_t, void __user *);
10164 +
10165 +#endif /* CONFIG_COMPAT */
10166 +
10167 +#endif /* _VSERVER_DLIMIT_CMD_H */
10168 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/global.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/global.h
10169 --- linux-4.4.111/include/linux/vserver/global.h        1970-01-01 00:00:00.000000000 +0000
10170 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/global.h      2018-01-09 16:36:32.000000000 +0000
10171 @@ -0,0 +1,19 @@
10172 +#ifndef _VSERVER_GLOBAL_H
10173 +#define _VSERVER_GLOBAL_H
10174 +
10175 +
10176 +extern atomic_t vx_global_ctotal;
10177 +extern atomic_t vx_global_cactive;
10178 +
10179 +extern atomic_t nx_global_ctotal;
10180 +extern atomic_t nx_global_cactive;
10181 +
10182 +extern atomic_t vs_global_nsproxy;
10183 +extern atomic_t vs_global_fs;
10184 +extern atomic_t vs_global_mnt_ns;
10185 +extern atomic_t vs_global_uts_ns;
10186 +extern atomic_t vs_global_user_ns;
10187 +extern atomic_t vs_global_pid_ns;
10188 +
10189 +
10190 +#endif /* _VSERVER_GLOBAL_H */
10191 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/history.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/history.h
10192 --- linux-4.4.111/include/linux/vserver/history.h       1970-01-01 00:00:00.000000000 +0000
10193 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/history.h     2018-01-09 16:36:32.000000000 +0000
10194 @@ -0,0 +1,197 @@
10195 +#ifndef _VSERVER_HISTORY_H
10196 +#define _VSERVER_HISTORY_H
10197 +
10198 +
10199 +enum {
10200 +       VXH_UNUSED = 0,
10201 +       VXH_THROW_OOPS = 1,
10202 +
10203 +       VXH_GET_VX_INFO,
10204 +       VXH_PUT_VX_INFO,
10205 +       VXH_INIT_VX_INFO,
10206 +       VXH_SET_VX_INFO,
10207 +       VXH_CLR_VX_INFO,
10208 +       VXH_CLAIM_VX_INFO,
10209 +       VXH_RELEASE_VX_INFO,
10210 +       VXH_ALLOC_VX_INFO,
10211 +       VXH_DEALLOC_VX_INFO,
10212 +       VXH_HASH_VX_INFO,
10213 +       VXH_UNHASH_VX_INFO,
10214 +       VXH_LOC_VX_INFO,
10215 +       VXH_LOOKUP_VX_INFO,
10216 +       VXH_CREATE_VX_INFO,
10217 +};
10218 +
10219 +struct _vxhe_vxi {
10220 +       struct vx_info *ptr;
10221 +       unsigned xid;
10222 +       unsigned usecnt;
10223 +       unsigned tasks;
10224 +};
10225 +
10226 +struct _vxhe_set_clr {
10227 +       void *data;
10228 +};
10229 +
10230 +struct _vxhe_loc_lookup {
10231 +       unsigned arg;
10232 +};
10233 +
10234 +struct _vx_hist_entry {
10235 +       void *loc;
10236 +       unsigned short seq;
10237 +       unsigned short type;
10238 +       struct _vxhe_vxi vxi;
10239 +       union {
10240 +               struct _vxhe_set_clr sc;
10241 +               struct _vxhe_loc_lookup ll;
10242 +       };
10243 +};
10244 +
10245 +#ifdef CONFIG_VSERVER_HISTORY
10246 +
10247 +extern unsigned volatile int vxh_active;
10248 +
10249 +struct _vx_hist_entry *vxh_advance(void *loc);
10250 +
10251 +
10252 +static inline
10253 +void   __vxh_copy_vxi(struct _vx_hist_entry *entry, struct vx_info *vxi)
10254 +{
10255 +       entry->vxi.ptr = vxi;
10256 +       if (vxi) {
10257 +               entry->vxi.usecnt = atomic_read(&vxi->vx_usecnt);
10258 +               entry->vxi.tasks = atomic_read(&vxi->vx_tasks);
10259 +               entry->vxi.xid = vxi->vx_id;
10260 +       }
10261 +}
10262 +
10263 +
10264 +#define        __HERE__ current_text_addr()
10265 +
10266 +#define __VXH_BODY(__type, __data, __here)     \
10267 +       struct _vx_hist_entry *entry;           \
10268 +                                               \
10269 +       preempt_disable();                      \
10270 +       entry = vxh_advance(__here);            \
10271 +       __data;                                 \
10272 +       entry->type = __type;                   \
10273 +       preempt_enable();
10274 +
10275 +
10276 +       /* pass vxi only */
10277 +
10278 +#define __VXH_SMPL                             \
10279 +       __vxh_copy_vxi(entry, vxi)
10280 +
10281 +static inline
10282 +void   __vxh_smpl(struct vx_info *vxi, int __type, void *__here)
10283 +{
10284 +       __VXH_BODY(__type, __VXH_SMPL, __here)
10285 +}
10286 +
10287 +       /* pass vxi and data (void *) */
10288 +
10289 +#define __VXH_DATA                             \
10290 +       __vxh_copy_vxi(entry, vxi);             \
10291 +       entry->sc.data = data
10292 +
10293 +static inline
10294 +void   __vxh_data(struct vx_info *vxi, void *data,
10295 +                       int __type, void *__here)
10296 +{
10297 +       __VXH_BODY(__type, __VXH_DATA, __here)
10298 +}
10299 +
10300 +       /* pass vxi and arg (long) */
10301 +
10302 +#define __VXH_LONG                             \
10303 +       __vxh_copy_vxi(entry, vxi);             \
10304 +       entry->ll.arg = arg
10305 +
10306 +static inline
10307 +void   __vxh_long(struct vx_info *vxi, long arg,
10308 +                       int __type, void *__here)
10309 +{
10310 +       __VXH_BODY(__type, __VXH_LONG, __here)
10311 +}
10312 +
10313 +
10314 +static inline
10315 +void   __vxh_throw_oops(void *__here)
10316 +{
10317 +       __VXH_BODY(VXH_THROW_OOPS, {}, __here);
10318 +       /* prevent further acquisition */
10319 +       vxh_active = 0;
10320 +}
10321 +
10322 +
10323 +#define vxh_throw_oops()       __vxh_throw_oops(__HERE__);
10324 +
10325 +#define __vxh_get_vx_info(v, h)        __vxh_smpl(v, VXH_GET_VX_INFO, h);
10326 +#define __vxh_put_vx_info(v, h)        __vxh_smpl(v, VXH_PUT_VX_INFO, h);
10327 +
10328 +#define __vxh_init_vx_info(v, d, h) \
10329 +       __vxh_data(v, d, VXH_INIT_VX_INFO, h);
10330 +#define __vxh_set_vx_info(v, d, h) \
10331 +       __vxh_data(v, d, VXH_SET_VX_INFO, h);
10332 +#define __vxh_clr_vx_info(v, d, h) \
10333 +       __vxh_data(v, d, VXH_CLR_VX_INFO, h);
10334 +
10335 +#define __vxh_claim_vx_info(v, d, h) \
10336 +       __vxh_data(v, d, VXH_CLAIM_VX_INFO, h);
10337 +#define __vxh_release_vx_info(v, d, h) \
10338 +       __vxh_data(v, d, VXH_RELEASE_VX_INFO, h);
10339 +
10340 +#define vxh_alloc_vx_info(v) \
10341 +       __vxh_smpl(v, VXH_ALLOC_VX_INFO, __HERE__);
10342 +#define vxh_dealloc_vx_info(v) \
10343 +       __vxh_smpl(v, VXH_DEALLOC_VX_INFO, __HERE__);
10344 +
10345 +#define vxh_hash_vx_info(v) \
10346 +       __vxh_smpl(v, VXH_HASH_VX_INFO, __HERE__);
10347 +#define vxh_unhash_vx_info(v) \
10348 +       __vxh_smpl(v, VXH_UNHASH_VX_INFO, __HERE__);
10349 +
10350 +#define vxh_loc_vx_info(v, l) \
10351 +       __vxh_long(v, l, VXH_LOC_VX_INFO, __HERE__);
10352 +#define vxh_lookup_vx_info(v, l) \
10353 +       __vxh_long(v, l, VXH_LOOKUP_VX_INFO, __HERE__);
10354 +#define vxh_create_vx_info(v, l) \
10355 +       __vxh_long(v, l, VXH_CREATE_VX_INFO, __HERE__);
10356 +
10357 +extern void vxh_dump_history(void);
10358 +
10359 +
10360 +#else  /* CONFIG_VSERVER_HISTORY */
10361 +
10362 +#define        __HERE__        0
10363 +
10364 +#define vxh_throw_oops()               do { } while (0)
10365 +
10366 +#define __vxh_get_vx_info(v, h)                do { } while (0)
10367 +#define __vxh_put_vx_info(v, h)                do { } while (0)
10368 +
10369 +#define __vxh_init_vx_info(v, d, h)    do { } while (0)
10370 +#define __vxh_set_vx_info(v, d, h)     do { } while (0)
10371 +#define __vxh_clr_vx_info(v, d, h)     do { } while (0)
10372 +
10373 +#define __vxh_claim_vx_info(v, d, h)   do { } while (0)
10374 +#define __vxh_release_vx_info(v, d, h) do { } while (0)
10375 +
10376 +#define vxh_alloc_vx_info(v)           do { } while (0)
10377 +#define vxh_dealloc_vx_info(v)         do { } while (0)
10378 +
10379 +#define vxh_hash_vx_info(v)            do { } while (0)
10380 +#define vxh_unhash_vx_info(v)          do { } while (0)
10381 +
10382 +#define vxh_loc_vx_info(v, l)          do { } while (0)
10383 +#define vxh_lookup_vx_info(v, l)       do { } while (0)
10384 +#define vxh_create_vx_info(v, l)       do { } while (0)
10385 +
10386 +#define vxh_dump_history()             do { } while (0)
10387 +
10388 +
10389 +#endif /* CONFIG_VSERVER_HISTORY */
10390 +
10391 +#endif /* _VSERVER_HISTORY_H */
10392 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/inode.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/inode.h
10393 --- linux-4.4.111/include/linux/vserver/inode.h 1970-01-01 00:00:00.000000000 +0000
10394 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/inode.h       2018-01-09 16:36:32.000000000 +0000
10395 @@ -0,0 +1,19 @@
10396 +#ifndef _VSERVER_INODE_H
10397 +#define _VSERVER_INODE_H
10398 +
10399 +#include <uapi/vserver/inode.h>
10400 +
10401 +
10402 +#ifdef CONFIG_VSERVER_PROC_SECURE
10403 +#define IATTR_PROC_DEFAULT     ( IATTR_ADMIN | IATTR_HIDE )
10404 +#define IATTR_PROC_SYMLINK     ( IATTR_ADMIN )
10405 +#else
10406 +#define IATTR_PROC_DEFAULT     ( IATTR_ADMIN )
10407 +#define IATTR_PROC_SYMLINK     ( IATTR_ADMIN )
10408 +#endif
10409 +
10410 +#define vx_hide_check(c, m)    (((m) & IATTR_HIDE) ? vx_check(c, m) : 1)
10411 +
10412 +#else  /* _VSERVER_INODE_H */
10413 +#warning duplicate inclusion
10414 +#endif /* _VSERVER_INODE_H */
10415 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/inode_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/inode_cmd.h
10416 --- linux-4.4.111/include/linux/vserver/inode_cmd.h     1970-01-01 00:00:00.000000000 +0000
10417 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/inode_cmd.h   2018-01-09 16:36:32.000000000 +0000
10418 @@ -0,0 +1,36 @@
10419 +#ifndef _VSERVER_INODE_CMD_H
10420 +#define _VSERVER_INODE_CMD_H
10421 +
10422 +#include <uapi/vserver/inode_cmd.h>
10423 +
10424 +
10425 +
10426 +#ifdef CONFIG_COMPAT
10427 +
10428 +#include <asm/compat.h>
10429 +
10430 +struct vcmd_ctx_iattr_v1_x32 {
10431 +       compat_uptr_t name_ptr;
10432 +       uint32_t tag;
10433 +       uint32_t flags;
10434 +       uint32_t mask;
10435 +};
10436 +
10437 +#endif /* CONFIG_COMPAT */
10438 +
10439 +#include <linux/compiler.h>
10440 +
10441 +extern int vc_get_iattr(void __user *);
10442 +extern int vc_set_iattr(void __user *);
10443 +
10444 +extern int vc_fget_iattr(uint32_t, void __user *);
10445 +extern int vc_fset_iattr(uint32_t, void __user *);
10446 +
10447 +#ifdef CONFIG_COMPAT
10448 +
10449 +extern int vc_get_iattr_x32(void __user *);
10450 +extern int vc_set_iattr_x32(void __user *);
10451 +
10452 +#endif /* CONFIG_COMPAT */
10453 +
10454 +#endif /* _VSERVER_INODE_CMD_H */
10455 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/limit.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit.h
10456 --- linux-4.4.111/include/linux/vserver/limit.h 1970-01-01 00:00:00.000000000 +0000
10457 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit.h       2018-01-09 16:36:32.000000000 +0000
10458 @@ -0,0 +1,67 @@
10459 +#ifndef _VSERVER_LIMIT_H
10460 +#define _VSERVER_LIMIT_H
10461 +
10462 +#include <uapi/vserver/limit.h>
10463 +
10464 +
10465 +#define        VLIM_NOCHECK    ((1L << VLIMIT_DENTRY) | (1L << RLIMIT_RSS))
10466 +
10467 +/*     keep in sync with CRLIM_INFINITY */
10468 +
10469 +#define        VLIM_INFINITY   (~0ULL)
10470 +
10471 +#include <asm/atomic.h>
10472 +#include <asm/resource.h>
10473 +
10474 +#ifndef RLIM_INFINITY
10475 +#warning RLIM_INFINITY is undefined
10476 +#endif
10477 +
10478 +#define __rlim_val(l, r, v)    ((l)->res[r].v)
10479 +
10480 +#define __rlim_soft(l, r)      __rlim_val(l, r, soft)
10481 +#define __rlim_hard(l, r)      __rlim_val(l, r, hard)
10482 +
10483 +#define __rlim_rcur(l, r)      __rlim_val(l, r, rcur)
10484 +#define __rlim_rmin(l, r)      __rlim_val(l, r, rmin)
10485 +#define __rlim_rmax(l, r)      __rlim_val(l, r, rmax)
10486 +
10487 +#define __rlim_lhit(l, r)      __rlim_val(l, r, lhit)
10488 +#define __rlim_hit(l, r)       atomic_inc(&__rlim_lhit(l, r))
10489 +
10490 +typedef atomic_long_t rlim_atomic_t;
10491 +typedef unsigned long rlim_t;
10492 +
10493 +#define __rlim_get(l, r)       atomic_long_read(&__rlim_rcur(l, r))
10494 +#define __rlim_set(l, r, v)    atomic_long_set(&__rlim_rcur(l, r), v)
10495 +#define __rlim_inc(l, r)       atomic_long_inc(&__rlim_rcur(l, r))
10496 +#define __rlim_dec(l, r)       atomic_long_dec(&__rlim_rcur(l, r))
10497 +#define __rlim_add(l, r, v)    atomic_long_add(v, &__rlim_rcur(l, r))
10498 +#define __rlim_sub(l, r, v)    atomic_long_sub(v, &__rlim_rcur(l, r))
10499 +
10500 +
10501 +#if    (RLIM_INFINITY == VLIM_INFINITY)
10502 +#define        VX_VLIM(r) ((long long)(long)(r))
10503 +#define        VX_RLIM(v) ((rlim_t)(v))
10504 +#else
10505 +#define        VX_VLIM(r) (((r) == RLIM_INFINITY) \
10506 +               ? VLIM_INFINITY : (long long)(r))
10507 +#define        VX_RLIM(v) (((v) == VLIM_INFINITY) \
10508 +               ? RLIM_INFINITY : (rlim_t)(v))
10509 +#endif
10510 +
10511 +struct sysinfo;
10512 +
10513 +#ifdef CONFIG_MEMCG
10514 +void vx_vsi_meminfo(struct sysinfo *);
10515 +void vx_vsi_swapinfo(struct sysinfo *);
10516 +long vx_vsi_cached(struct sysinfo *);
10517 +#else  /* !CONFIG_MEMCG */
10518 +#define vx_vsi_meminfo(s) do { } while (0)
10519 +#define vx_vsi_swapinfo(s) do { } while (0)
10520 +#define vx_vsi_cached(s) (0L)
10521 +#endif /* !CONFIG_MEMCG */
10522 +
10523 +#define NUM_LIMITS     24
10524 +
10525 +#endif /* _VSERVER_LIMIT_H */
10526 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/limit_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit_cmd.h
10527 --- linux-4.4.111/include/linux/vserver/limit_cmd.h     1970-01-01 00:00:00.000000000 +0000
10528 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit_cmd.h   2018-01-09 16:36:32.000000000 +0000
10529 @@ -0,0 +1,35 @@
10530 +#ifndef _VSERVER_LIMIT_CMD_H
10531 +#define _VSERVER_LIMIT_CMD_H
10532 +
10533 +#include <uapi/vserver/limit_cmd.h>
10534 +
10535 +
10536 +#ifdef CONFIG_IA32_EMULATION
10537 +
10538 +struct vcmd_ctx_rlimit_v0_x32 {
10539 +       uint32_t id;
10540 +       uint64_t minimum;
10541 +       uint64_t softlimit;
10542 +       uint64_t maximum;
10543 +} __attribute__ ((packed));
10544 +
10545 +#endif /* CONFIG_IA32_EMULATION */
10546 +
10547 +#include <linux/compiler.h>
10548 +
10549 +extern int vc_get_rlimit_mask(uint32_t, void __user *);
10550 +extern int vc_get_rlimit(struct vx_info *, void __user *);
10551 +extern int vc_set_rlimit(struct vx_info *, void __user *);
10552 +extern int vc_reset_hits(struct vx_info *, void __user *);
10553 +extern int vc_reset_minmax(struct vx_info *, void __user *);
10554 +
10555 +extern int vc_rlimit_stat(struct vx_info *, void __user *);
10556 +
10557 +#ifdef CONFIG_IA32_EMULATION
10558 +
10559 +extern int vc_get_rlimit_x32(struct vx_info *, void __user *);
10560 +extern int vc_set_rlimit_x32(struct vx_info *, void __user *);
10561 +
10562 +#endif /* CONFIG_IA32_EMULATION */
10563 +
10564 +#endif /* _VSERVER_LIMIT_CMD_H */
10565 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/limit_def.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit_def.h
10566 --- linux-4.4.111/include/linux/vserver/limit_def.h     1970-01-01 00:00:00.000000000 +0000
10567 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit_def.h   2018-01-09 16:36:32.000000000 +0000
10568 @@ -0,0 +1,47 @@
10569 +#ifndef _VSERVER_LIMIT_DEF_H
10570 +#define _VSERVER_LIMIT_DEF_H
10571 +
10572 +#include <asm/atomic.h>
10573 +#include <asm/resource.h>
10574 +
10575 +#include "limit.h"
10576 +
10577 +
10578 +struct _vx_res_limit {
10579 +       rlim_t soft;            /* Context soft limit */
10580 +       rlim_t hard;            /* Context hard limit */
10581 +
10582 +       rlim_atomic_t rcur;     /* Current value */
10583 +       rlim_t rmin;            /* Context minimum */
10584 +       rlim_t rmax;            /* Context maximum */
10585 +
10586 +       atomic_t lhit;          /* Limit hits */
10587 +};
10588 +
10589 +/* context sub struct */
10590 +
10591 +struct _vx_limit {
10592 +       struct _vx_res_limit res[NUM_LIMITS];
10593 +};
10594 +
10595 +#ifdef CONFIG_VSERVER_DEBUG
10596 +
10597 +static inline void __dump_vx_limit(struct _vx_limit *limit)
10598 +{
10599 +       int i;
10600 +
10601 +       printk("\t_vx_limit:");
10602 +       for (i = 0; i < NUM_LIMITS; i++) {
10603 +               printk("\t [%2d] = %8lu %8lu/%8lu, %8ld/%8ld, %8d\n",
10604 +                       i, (unsigned long)__rlim_get(limit, i),
10605 +                       (unsigned long)__rlim_rmin(limit, i),
10606 +                       (unsigned long)__rlim_rmax(limit, i),
10607 +                       (long)__rlim_soft(limit, i),
10608 +                       (long)__rlim_hard(limit, i),
10609 +                       atomic_read(&__rlim_lhit(limit, i)));
10610 +       }
10611 +}
10612 +
10613 +#endif
10614 +
10615 +#endif /* _VSERVER_LIMIT_DEF_H */
10616 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/limit_int.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit_int.h
10617 --- linux-4.4.111/include/linux/vserver/limit_int.h     1970-01-01 00:00:00.000000000 +0000
10618 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/limit_int.h   2018-01-09 16:36:32.000000000 +0000
10619 @@ -0,0 +1,193 @@
10620 +#ifndef _VSERVER_LIMIT_INT_H
10621 +#define _VSERVER_LIMIT_INT_H
10622 +
10623 +#define VXD_RCRES_COND(r)      VXD_CBIT(cres, r)
10624 +#define VXD_RLIMIT_COND(r)     VXD_CBIT(limit, r)
10625 +
10626 +extern const char *vlimit_name[NUM_LIMITS];
10627 +
10628 +static inline void __vx_acc_cres(struct vx_info *vxi,
10629 +       int res, int dir, void *_data, char *_file, int _line)
10630 +{
10631 +       if (VXD_RCRES_COND(res))
10632 +               vxlprintk(1, "vx_acc_cres[%5d,%s,%2d]: %5ld%s (%p)",
10633 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10634 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10635 +                       (dir > 0) ? "++" : "--", _data, _file, _line);
10636 +       if (!vxi)
10637 +               return;
10638 +
10639 +       if (dir > 0)
10640 +               __rlim_inc(&vxi->limit, res);
10641 +       else
10642 +               __rlim_dec(&vxi->limit, res);
10643 +}
10644 +
10645 +static inline void __vx_add_cres(struct vx_info *vxi,
10646 +       int res, int amount, void *_data, char *_file, int _line)
10647 +{
10648 +       if (VXD_RCRES_COND(res))
10649 +               vxlprintk(1, "vx_add_cres[%5d,%s,%2d]: %5ld += %5d (%p)",
10650 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10651 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10652 +                       amount, _data, _file, _line);
10653 +       if (amount == 0)
10654 +               return;
10655 +       if (!vxi)
10656 +               return;
10657 +       __rlim_add(&vxi->limit, res, amount);
10658 +}
10659 +
10660 +static inline
10661 +int __vx_cres_adjust_max(struct _vx_limit *limit, int res, rlim_t value)
10662 +{
10663 +       int cond = (value > __rlim_rmax(limit, res));
10664 +
10665 +       if (cond)
10666 +               __rlim_rmax(limit, res) = value;
10667 +       return cond;
10668 +}
10669 +
10670 +static inline
10671 +int __vx_cres_adjust_min(struct _vx_limit *limit, int res, rlim_t value)
10672 +{
10673 +       int cond = (value < __rlim_rmin(limit, res));
10674 +
10675 +       if (cond)
10676 +               __rlim_rmin(limit, res) = value;
10677 +       return cond;
10678 +}
10679 +
10680 +static inline
10681 +void __vx_cres_fixup(struct _vx_limit *limit, int res, rlim_t value)
10682 +{
10683 +       if (!__vx_cres_adjust_max(limit, res, value))
10684 +               __vx_cres_adjust_min(limit, res, value);
10685 +}
10686 +
10687 +
10688 +/*     return values:
10689 +        +1 ... no limit hit
10690 +        -1 ... over soft limit
10691 +         0 ... over hard limit         */
10692 +
10693 +static inline int __vx_cres_avail(struct vx_info *vxi,
10694 +       int res, int num, char *_file, int _line)
10695 +{
10696 +       struct _vx_limit *limit;
10697 +       rlim_t value;
10698 +
10699 +       if (VXD_RLIMIT_COND(res))
10700 +               vxlprintk(1, "vx_cres_avail[%5d,%s,%2d]: %5ld/%5ld > %5ld + %5d",
10701 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10702 +                       (vxi ? (long)__rlim_soft(&vxi->limit, res) : -1),
10703 +                       (vxi ? (long)__rlim_hard(&vxi->limit, res) : -1),
10704 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10705 +                       num, _file, _line);
10706 +       if (!vxi)
10707 +               return 1;
10708 +
10709 +       limit = &vxi->limit;
10710 +       value = __rlim_get(limit, res);
10711 +
10712 +       if (!__vx_cres_adjust_max(limit, res, value))
10713 +               __vx_cres_adjust_min(limit, res, value);
10714 +
10715 +       if (num == 0)
10716 +               return 1;
10717 +
10718 +       if (__rlim_soft(limit, res) == RLIM_INFINITY)
10719 +               return -1;
10720 +       if (value + num <= __rlim_soft(limit, res))
10721 +               return -1;
10722 +
10723 +       if (__rlim_hard(limit, res) == RLIM_INFINITY)
10724 +               return 1;
10725 +       if (value + num <= __rlim_hard(limit, res))
10726 +               return 1;
10727 +
10728 +       __rlim_hit(limit, res);
10729 +       return 0;
10730 +}
10731 +
10732 +
10733 +static const int VLA_RSS[] = { RLIMIT_RSS, VLIMIT_ANON, VLIMIT_MAPPED, 0 };
10734 +
10735 +static inline
10736 +rlim_t __vx_cres_array_sum(struct _vx_limit *limit, const int *array)
10737 +{
10738 +       rlim_t value, sum = 0;
10739 +       int res;
10740 +
10741 +       while ((res = *array++)) {
10742 +               value = __rlim_get(limit, res);
10743 +               __vx_cres_fixup(limit, res, value);
10744 +               sum += value;
10745 +       }
10746 +       return sum;
10747 +}
10748 +
10749 +static inline
10750 +rlim_t __vx_cres_array_fixup(struct _vx_limit *limit, const int *array)
10751 +{
10752 +       rlim_t value = __vx_cres_array_sum(limit, array + 1);
10753 +       int res = *array;
10754 +
10755 +       if (value == __rlim_get(limit, res))
10756 +               return value;
10757 +
10758 +       __rlim_set(limit, res, value);
10759 +       /* now adjust min/max */
10760 +       if (!__vx_cres_adjust_max(limit, res, value))
10761 +               __vx_cres_adjust_min(limit, res, value);
10762 +
10763 +       return value;
10764 +}
10765 +
10766 +static inline int __vx_cres_array_avail(struct vx_info *vxi,
10767 +       const int *array, int num, char *_file, int _line)
10768 +{
10769 +       struct _vx_limit *limit;
10770 +       rlim_t value = 0;
10771 +       int res;
10772 +
10773 +       if (num == 0)
10774 +               return 1;
10775 +       if (!vxi)
10776 +               return 1;
10777 +
10778 +       limit = &vxi->limit;
10779 +       res = *array;
10780 +       value = __vx_cres_array_sum(limit, array + 1);
10781 +
10782 +       __rlim_set(limit, res, value);
10783 +       __vx_cres_fixup(limit, res, value);
10784 +
10785 +       return __vx_cres_avail(vxi, res, num, _file, _line);
10786 +}
10787 +
10788 +
10789 +static inline void vx_limit_fixup(struct _vx_limit *limit, int id)
10790 +{
10791 +       rlim_t value;
10792 +       int res;
10793 +
10794 +       /* complex resources first */
10795 +       if ((id < 0) || (id == RLIMIT_RSS))
10796 +               __vx_cres_array_fixup(limit, VLA_RSS);
10797 +
10798 +       for (res = 0; res < NUM_LIMITS; res++) {
10799 +               if ((id > 0) && (res != id))
10800 +                       continue;
10801 +
10802 +               value = __rlim_get(limit, res);
10803 +               __vx_cres_fixup(limit, res, value);
10804 +
10805 +               /* not supposed to happen, maybe warn? */
10806 +               if (__rlim_rmax(limit, res) > __rlim_hard(limit, res))
10807 +                       __rlim_rmax(limit, res) = __rlim_hard(limit, res);
10808 +       }
10809 +}
10810 +
10811 +
10812 +#endif /* _VSERVER_LIMIT_INT_H */
10813 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/monitor.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/monitor.h
10814 --- linux-4.4.111/include/linux/vserver/monitor.h       1970-01-01 00:00:00.000000000 +0000
10815 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/monitor.h     2018-01-09 16:36:32.000000000 +0000
10816 @@ -0,0 +1,6 @@
10817 +#ifndef _VSERVER_MONITOR_H
10818 +#define _VSERVER_MONITOR_H
10819 +
10820 +#include <uapi/vserver/monitor.h>
10821 +
10822 +#endif /* _VSERVER_MONITOR_H */
10823 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/network.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/network.h
10824 --- linux-4.4.111/include/linux/vserver/network.h       1970-01-01 00:00:00.000000000 +0000
10825 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/network.h     2018-01-09 16:36:32.000000000 +0000
10826 @@ -0,0 +1,76 @@
10827 +#ifndef _VSERVER_NETWORK_H
10828 +#define _VSERVER_NETWORK_H
10829 +
10830 +
10831 +#include <linux/list.h>
10832 +#include <linux/spinlock.h>
10833 +#include <linux/rcupdate.h>
10834 +#include <linux/in.h>
10835 +#include <linux/in6.h>
10836 +#include <asm/atomic.h>
10837 +#include <uapi/vserver/network.h>
10838 +
10839 +struct nx_addr_v4 {
10840 +       struct nx_addr_v4 *next;
10841 +       struct in_addr ip[2];
10842 +       struct in_addr mask;
10843 +       uint16_t type;
10844 +       uint16_t flags;
10845 +};
10846 +
10847 +struct nx_addr_v6 {
10848 +       struct nx_addr_v6 *next;
10849 +       struct in6_addr ip;
10850 +       struct in6_addr mask;
10851 +       uint32_t prefix;
10852 +       uint16_t type;
10853 +       uint16_t flags;
10854 +};
10855 +
10856 +struct nx_info {
10857 +       struct hlist_node nx_hlist;     /* linked list of nxinfos */
10858 +       vnid_t nx_id;                   /* vnet id */
10859 +       atomic_t nx_usecnt;             /* usage count */
10860 +       atomic_t nx_tasks;              /* tasks count */
10861 +       int nx_state;                   /* context state */
10862 +
10863 +       uint64_t nx_flags;              /* network flag word */
10864 +       uint64_t nx_ncaps;              /* network capabilities */
10865 +
10866 +       spinlock_t addr_lock;           /* protect address changes */
10867 +       struct in_addr v4_lback;        /* Loopback address */
10868 +       struct in_addr v4_bcast;        /* Broadcast address */
10869 +       struct nx_addr_v4 v4;           /* First/Single ipv4 address */
10870 +#ifdef CONFIG_IPV6
10871 +       struct nx_addr_v6 v6;           /* First/Single ipv6 address */
10872 +#endif
10873 +       char nx_name[65];               /* network context name */
10874 +};
10875 +
10876 +
10877 +/* status flags */
10878 +
10879 +#define NXS_HASHED      0x0001
10880 +#define NXS_SHUTDOWN    0x0100
10881 +#define NXS_RELEASED    0x8000
10882 +
10883 +extern struct nx_info *lookup_nx_info(int);
10884 +
10885 +extern int get_nid_list(int, unsigned int *, int);
10886 +extern int nid_is_hashed(vnid_t);
10887 +
10888 +extern int nx_migrate_task(struct task_struct *, struct nx_info *);
10889 +
10890 +extern long vs_net_change(struct nx_info *, unsigned int);
10891 +
10892 +struct sock;
10893 +
10894 +
10895 +#define NX_IPV4(n)     ((n)->v4.type != NXA_TYPE_NONE)
10896 +#ifdef  CONFIG_IPV6
10897 +#define NX_IPV6(n)     ((n)->v6.type != NXA_TYPE_NONE)
10898 +#else
10899 +#define NX_IPV6(n)     (0)
10900 +#endif
10901 +
10902 +#endif /* _VSERVER_NETWORK_H */
10903 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/network_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/network_cmd.h
10904 --- linux-4.4.111/include/linux/vserver/network_cmd.h   1970-01-01 00:00:00.000000000 +0000
10905 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/network_cmd.h 2018-01-09 16:36:32.000000000 +0000
10906 @@ -0,0 +1,37 @@
10907 +#ifndef _VSERVER_NETWORK_CMD_H
10908 +#define _VSERVER_NETWORK_CMD_H
10909 +
10910 +#include <uapi/vserver/network_cmd.h>
10911 +
10912 +extern int vc_task_nid(uint32_t);
10913 +
10914 +extern int vc_nx_info(struct nx_info *, void __user *);
10915 +
10916 +extern int vc_net_create(uint32_t, void __user *);
10917 +extern int vc_net_migrate(struct nx_info *, void __user *);
10918 +
10919 +extern int vc_net_add(struct nx_info *, void __user *);
10920 +extern int vc_net_remove(struct nx_info *, void __user *);
10921 +
10922 +extern int vc_net_add_ipv4_v1(struct nx_info *, void __user *);
10923 +extern int vc_net_add_ipv4(struct nx_info *, void __user *);
10924 +
10925 +extern int vc_net_rem_ipv4_v1(struct nx_info *, void __user *);
10926 +extern int vc_net_rem_ipv4(struct nx_info *, void __user *);
10927 +
10928 +extern int vc_net_add_ipv6(struct nx_info *, void __user *);
10929 +extern int vc_net_remove_ipv6(struct nx_info *, void __user *);
10930 +
10931 +extern int vc_add_match_ipv4(struct nx_info *, void __user *);
10932 +extern int vc_get_match_ipv4(struct nx_info *, void __user *);
10933 +
10934 +extern int vc_add_match_ipv6(struct nx_info *, void __user *);
10935 +extern int vc_get_match_ipv6(struct nx_info *, void __user *);
10936 +
10937 +extern int vc_get_nflags(struct nx_info *, void __user *);
10938 +extern int vc_set_nflags(struct nx_info *, void __user *);
10939 +
10940 +extern int vc_get_ncaps(struct nx_info *, void __user *);
10941 +extern int vc_set_ncaps(struct nx_info *, void __user *);
10942 +
10943 +#endif /* _VSERVER_CONTEXT_CMD_H */
10944 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/percpu.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/percpu.h
10945 --- linux-4.4.111/include/linux/vserver/percpu.h        1970-01-01 00:00:00.000000000 +0000
10946 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/percpu.h      2018-01-09 16:36:32.000000000 +0000
10947 @@ -0,0 +1,14 @@
10948 +#ifndef _VSERVER_PERCPU_H
10949 +#define _VSERVER_PERCPU_H
10950 +
10951 +#include "cvirt_def.h"
10952 +#include "sched_def.h"
10953 +
10954 +struct _vx_percpu {
10955 +       struct _vx_cvirt_pc cvirt;
10956 +       struct _vx_sched_pc sched;
10957 +};
10958 +
10959 +#define        PERCPU_PERCTX   (sizeof(struct _vx_percpu))
10960 +
10961 +#endif /* _VSERVER_PERCPU_H */
10962 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/pid.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/pid.h
10963 --- linux-4.4.111/include/linux/vserver/pid.h   1970-01-01 00:00:00.000000000 +0000
10964 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/pid.h 2018-01-09 16:36:32.000000000 +0000
10965 @@ -0,0 +1,51 @@
10966 +#ifndef _VSERVER_PID_H
10967 +#define _VSERVER_PID_H
10968 +
10969 +/* pid faking stuff */
10970 +
10971 +#define vx_info_map_pid(v, p) \
10972 +       __vx_info_map_pid((v), (p), __func__, __FILE__, __LINE__)
10973 +#define vx_info_map_tgid(v,p)  vx_info_map_pid(v,p)
10974 +#define vx_map_pid(p) vx_info_map_pid(current_vx_info(), p)
10975 +#define vx_map_tgid(p) vx_map_pid(p)
10976 +
10977 +static inline int __vx_info_map_pid(struct vx_info *vxi, int pid,
10978 +       const char *func, const char *file, int line)
10979 +{
10980 +       if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
10981 +               vxfprintk(VXD_CBIT(cvirt, 2),
10982 +                       "vx_map_tgid: %p/%llx: %d -> %d",
10983 +                       vxi, (long long)vxi->vx_flags, pid,
10984 +                       (pid && pid == vxi->vx_initpid) ? 1 : pid,
10985 +                       func, file, line);
10986 +               if (pid == 0)
10987 +                       return 0;
10988 +               if (pid == vxi->vx_initpid)
10989 +                       return 1;
10990 +       }
10991 +       return pid;
10992 +}
10993 +
10994 +#define vx_info_rmap_pid(v, p) \
10995 +       __vx_info_rmap_pid((v), (p), __func__, __FILE__, __LINE__)
10996 +#define vx_rmap_pid(p) vx_info_rmap_pid(current_vx_info(), p)
10997 +#define vx_rmap_tgid(p) vx_rmap_pid(p)
10998 +
10999 +static inline int __vx_info_rmap_pid(struct vx_info *vxi, int pid,
11000 +       const char *func, const char *file, int line)
11001 +{
11002 +       if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
11003 +               vxfprintk(VXD_CBIT(cvirt, 2),
11004 +                       "vx_rmap_tgid: %p/%llx: %d -> %d",
11005 +                       vxi, (long long)vxi->vx_flags, pid,
11006 +                       (pid == 1) ? vxi->vx_initpid : pid,
11007 +                       func, file, line);
11008 +               if ((pid == 1) && vxi->vx_initpid)
11009 +                       return vxi->vx_initpid;
11010 +               if (pid == vxi->vx_initpid)
11011 +                       return ~0U;
11012 +       }
11013 +       return pid;
11014 +}
11015 +
11016 +#endif
11017 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/sched.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/sched.h
11018 --- linux-4.4.111/include/linux/vserver/sched.h 1970-01-01 00:00:00.000000000 +0000
11019 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/sched.h       2018-01-09 16:36:32.000000000 +0000
11020 @@ -0,0 +1,23 @@
11021 +#ifndef _VSERVER_SCHED_H
11022 +#define _VSERVER_SCHED_H
11023 +
11024 +
11025 +#ifdef __KERNEL__
11026 +
11027 +struct timespec;
11028 +
11029 +void vx_vsi_uptime(struct timespec *, struct timespec *);
11030 +
11031 +
11032 +struct vx_info;
11033 +
11034 +void vx_update_load(struct vx_info *);
11035 +
11036 +
11037 +void vx_update_sched_param(struct _vx_sched *sched,
11038 +       struct _vx_sched_pc *sched_pc);
11039 +
11040 +#endif /* __KERNEL__ */
11041 +#else  /* _VSERVER_SCHED_H */
11042 +#warning duplicate inclusion
11043 +#endif /* _VSERVER_SCHED_H */
11044 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/sched_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/sched_cmd.h
11045 --- linux-4.4.111/include/linux/vserver/sched_cmd.h     1970-01-01 00:00:00.000000000 +0000
11046 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/sched_cmd.h   2018-01-09 16:36:32.000000000 +0000
11047 @@ -0,0 +1,11 @@
11048 +#ifndef _VSERVER_SCHED_CMD_H
11049 +#define _VSERVER_SCHED_CMD_H
11050 +
11051 +
11052 +#include <linux/compiler.h>
11053 +#include <uapi/vserver/sched_cmd.h>
11054 +
11055 +extern int vc_set_prio_bias(struct vx_info *, void __user *);
11056 +extern int vc_get_prio_bias(struct vx_info *, void __user *);
11057 +
11058 +#endif /* _VSERVER_SCHED_CMD_H */
11059 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/sched_def.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/sched_def.h
11060 --- linux-4.4.111/include/linux/vserver/sched_def.h     1970-01-01 00:00:00.000000000 +0000
11061 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/sched_def.h   2018-01-09 16:36:32.000000000 +0000
11062 @@ -0,0 +1,38 @@
11063 +#ifndef _VSERVER_SCHED_DEF_H
11064 +#define _VSERVER_SCHED_DEF_H
11065 +
11066 +#include <linux/spinlock.h>
11067 +#include <linux/jiffies.h>
11068 +#include <linux/cpumask.h>
11069 +#include <asm/atomic.h>
11070 +#include <asm/param.h>
11071 +
11072 +
11073 +/* context sub struct */
11074 +
11075 +struct _vx_sched {
11076 +       int prio_bias;                  /* bias offset for priority */
11077 +
11078 +       cpumask_t update;               /* CPUs which should update */
11079 +};
11080 +
11081 +struct _vx_sched_pc {
11082 +       int prio_bias;                  /* bias offset for priority */
11083 +
11084 +       uint64_t user_ticks;            /* token tick events */
11085 +       uint64_t sys_ticks;             /* token tick events */
11086 +       uint64_t hold_ticks;            /* token ticks paused */
11087 +};
11088 +
11089 +
11090 +#ifdef CONFIG_VSERVER_DEBUG
11091 +
11092 +static inline void __dump_vx_sched(struct _vx_sched *sched)
11093 +{
11094 +       printk("\t_vx_sched:\n");
11095 +       printk("\t priority = %4d\n", sched->prio_bias);
11096 +}
11097 +
11098 +#endif
11099 +
11100 +#endif /* _VSERVER_SCHED_DEF_H */
11101 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/signal.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/signal.h
11102 --- linux-4.4.111/include/linux/vserver/signal.h        1970-01-01 00:00:00.000000000 +0000
11103 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/signal.h      2018-01-09 16:36:32.000000000 +0000
11104 @@ -0,0 +1,14 @@
11105 +#ifndef _VSERVER_SIGNAL_H
11106 +#define _VSERVER_SIGNAL_H
11107 +
11108 +
11109 +#ifdef __KERNEL__
11110 +
11111 +struct vx_info;
11112 +
11113 +int vx_info_kill(struct vx_info *, int, int);
11114 +
11115 +#endif /* __KERNEL__ */
11116 +#else  /* _VSERVER_SIGNAL_H */
11117 +#warning duplicate inclusion
11118 +#endif /* _VSERVER_SIGNAL_H */
11119 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/signal_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/signal_cmd.h
11120 --- linux-4.4.111/include/linux/vserver/signal_cmd.h    1970-01-01 00:00:00.000000000 +0000
11121 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/signal_cmd.h  2018-01-09 16:36:32.000000000 +0000
11122 @@ -0,0 +1,14 @@
11123 +#ifndef _VSERVER_SIGNAL_CMD_H
11124 +#define _VSERVER_SIGNAL_CMD_H
11125 +
11126 +#include <uapi/vserver/signal_cmd.h>
11127 +
11128 +
11129 +extern int vc_ctx_kill(struct vx_info *, void __user *);
11130 +extern int vc_wait_exit(struct vx_info *, void __user *);
11131 +
11132 +
11133 +extern int vc_get_pflags(uint32_t pid, void __user *);
11134 +extern int vc_set_pflags(uint32_t pid, void __user *);
11135 +
11136 +#endif /* _VSERVER_SIGNAL_CMD_H */
11137 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/space.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/space.h
11138 --- linux-4.4.111/include/linux/vserver/space.h 1970-01-01 00:00:00.000000000 +0000
11139 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/space.h       2018-01-09 16:36:32.000000000 +0000
11140 @@ -0,0 +1,12 @@
11141 +#ifndef _VSERVER_SPACE_H
11142 +#define _VSERVER_SPACE_H
11143 +
11144 +#include <linux/types.h>
11145 +
11146 +struct vx_info;
11147 +
11148 +int vx_set_space(struct vx_info *vxi, unsigned long mask, unsigned index);
11149 +
11150 +#else  /* _VSERVER_SPACE_H */
11151 +#warning duplicate inclusion
11152 +#endif /* _VSERVER_SPACE_H */
11153 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/space_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/space_cmd.h
11154 --- linux-4.4.111/include/linux/vserver/space_cmd.h     1970-01-01 00:00:00.000000000 +0000
11155 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/space_cmd.h   2018-01-09 16:36:32.000000000 +0000
11156 @@ -0,0 +1,13 @@
11157 +#ifndef _VSERVER_SPACE_CMD_H
11158 +#define _VSERVER_SPACE_CMD_H
11159 +
11160 +#include <uapi/vserver/space_cmd.h>
11161 +
11162 +
11163 +extern int vc_enter_space_v1(struct vx_info *, void __user *);
11164 +extern int vc_set_space_v1(struct vx_info *, void __user *);
11165 +extern int vc_enter_space(struct vx_info *, void __user *);
11166 +extern int vc_set_space(struct vx_info *, void __user *);
11167 +extern int vc_get_space_mask(void __user *, int);
11168 +
11169 +#endif /* _VSERVER_SPACE_CMD_H */
11170 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/switch.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/switch.h
11171 --- linux-4.4.111/include/linux/vserver/switch.h        1970-01-01 00:00:00.000000000 +0000
11172 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/switch.h      2018-01-09 16:36:32.000000000 +0000
11173 @@ -0,0 +1,8 @@
11174 +#ifndef _VSERVER_SWITCH_H
11175 +#define _VSERVER_SWITCH_H
11176 +
11177 +
11178 +#include <linux/errno.h>
11179 +#include <uapi/vserver/switch.h>
11180 +
11181 +#endif /* _VSERVER_SWITCH_H */
11182 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/tag.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/tag.h
11183 --- linux-4.4.111/include/linux/vserver/tag.h   1970-01-01 00:00:00.000000000 +0000
11184 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/tag.h 2018-01-09 16:36:32.000000000 +0000
11185 @@ -0,0 +1,160 @@
11186 +#ifndef _DX_TAG_H
11187 +#define _DX_TAG_H
11188 +
11189 +#include <linux/types.h>
11190 +#include <linux/uidgid.h>
11191 +
11192 +
11193 +#define DX_TAG(in)     (IS_TAGGED(in))
11194 +
11195 +
11196 +#ifdef CONFIG_TAG_NFSD
11197 +#define DX_TAG_NFSD    1
11198 +#else
11199 +#define DX_TAG_NFSD    0
11200 +#endif
11201 +
11202 +
11203 +#ifdef CONFIG_TAGGING_NONE
11204 +
11205 +#define MAX_UID                0xFFFFFFFF
11206 +#define MAX_GID                0xFFFFFFFF
11207 +
11208 +#define INOTAG_TAG(cond, uid, gid, tag)        (0)
11209 +
11210 +#define TAGINO_UID(cond, uid, tag)     (uid)
11211 +#define TAGINO_GID(cond, gid, tag)     (gid)
11212 +
11213 +#endif
11214 +
11215 +
11216 +#ifdef CONFIG_TAGGING_GID16
11217 +
11218 +#define MAX_UID                0xFFFFFFFF
11219 +#define MAX_GID                0x0000FFFF
11220 +
11221 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11222 +       ((cond) ? (((gid) >> 16) & 0xFFFF) : 0)
11223 +
11224 +#define TAGINO_UID(cond, uid, tag)     (uid)
11225 +#define TAGINO_GID(cond, gid, tag)     \
11226 +       ((cond) ? (((gid) & 0xFFFF) | ((tag) << 16)) : (gid))
11227 +
11228 +#endif
11229 +
11230 +
11231 +#ifdef CONFIG_TAGGING_ID24
11232 +
11233 +#define MAX_UID                0x00FFFFFF
11234 +#define MAX_GID                0x00FFFFFF
11235 +
11236 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11237 +       ((cond) ? ((((uid) >> 16) & 0xFF00) | (((gid) >> 24) & 0xFF)) : 0)
11238 +
11239 +#define TAGINO_UID(cond, uid, tag)     \
11240 +       ((cond) ? (((uid) & 0xFFFFFF) | (((tag) & 0xFF00) << 16)) : (uid))
11241 +#define TAGINO_GID(cond, gid, tag)     \
11242 +       ((cond) ? (((gid) & 0xFFFFFF) | (((tag) & 0x00FF) << 24)) : (gid))
11243 +
11244 +#endif
11245 +
11246 +
11247 +#ifdef CONFIG_TAGGING_UID16
11248 +
11249 +#define MAX_UID                0x0000FFFF
11250 +#define MAX_GID                0xFFFFFFFF
11251 +
11252 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11253 +       ((cond) ? (((uid) >> 16) & 0xFFFF) : 0)
11254 +
11255 +#define TAGINO_UID(cond, uid, tag)     \
11256 +       ((cond) ? (((uid) & 0xFFFF) | ((tag) << 16)) : (uid))
11257 +#define TAGINO_GID(cond, gid, tag)     (gid)
11258 +
11259 +#endif
11260 +
11261 +
11262 +#ifdef CONFIG_TAGGING_INTERN
11263 +
11264 +#define MAX_UID                0xFFFFFFFF
11265 +#define MAX_GID                0xFFFFFFFF
11266 +
11267 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11268 +       ((cond) ? (tag) : 0)
11269 +
11270 +#define TAGINO_UID(cond, uid, tag)     (uid)
11271 +#define TAGINO_GID(cond, gid, tag)     (gid)
11272 +
11273 +#endif
11274 +
11275 +
11276 +#ifndef CONFIG_TAGGING_NONE
11277 +#define dx_current_fstag(sb)   \
11278 +       ((sb)->s_flags & MS_TAGGED ? dx_current_tag() : 0)
11279 +#else
11280 +#define dx_current_fstag(sb)   (0)
11281 +#endif
11282 +
11283 +#ifndef CONFIG_TAGGING_INTERN
11284 +#define TAGINO_TAG(cond, tag)  (0)
11285 +#else
11286 +#define TAGINO_TAG(cond, tag)  ((cond) ? (tag) : 0)
11287 +#endif
11288 +
11289 +#define TAGINO_KUID(cond, kuid, ktag)  \
11290 +       KUIDT_INIT(TAGINO_UID(cond, __kuid_val(kuid), __ktag_val(ktag)))
11291 +#define TAGINO_KGID(cond, kgid, ktag)  \
11292 +       KGIDT_INIT(TAGINO_GID(cond, __kgid_val(kgid), __ktag_val(ktag)))
11293 +#define TAGINO_KTAG(cond, ktag)                \
11294 +       KTAGT_INIT(TAGINO_TAG(cond, __ktag_val(ktag)))
11295 +
11296 +
11297 +#define INOTAG_UID(cond, uid, gid)     \
11298 +       ((cond) ? ((uid) & MAX_UID) : (uid))
11299 +#define INOTAG_GID(cond, uid, gid)     \
11300 +       ((cond) ? ((gid) & MAX_GID) : (gid))
11301 +
11302 +#define INOTAG_KUID(cond, kuid, kgid)  \
11303 +       KUIDT_INIT(INOTAG_UID(cond, __kuid_val(kuid), __kgid_val(kgid)))
11304 +#define INOTAG_KGID(cond, kuid, kgid)  \
11305 +       KGIDT_INIT(INOTAG_GID(cond, __kuid_val(kuid), __kgid_val(kgid)))
11306 +#define INOTAG_KTAG(cond, kuid, kgid, ktag) \
11307 +       KTAGT_INIT(INOTAG_TAG(cond, \
11308 +               __kuid_val(kuid), __kgid_val(kgid), __ktag_val(ktag)))
11309 +
11310 +
11311 +static inline uid_t dx_map_uid(uid_t uid)
11312 +{
11313 +       if ((uid > MAX_UID) && (uid != -1))
11314 +               uid = -2;
11315 +       return (uid & MAX_UID);
11316 +}
11317 +
11318 +static inline gid_t dx_map_gid(gid_t gid)
11319 +{
11320 +       if ((gid > MAX_GID) && (gid != -1))
11321 +               gid = -2;
11322 +       return (gid & MAX_GID);
11323 +}
11324 +
11325 +struct peer_tag {
11326 +       int32_t xid;
11327 +       int32_t nid;
11328 +};
11329 +
11330 +#define dx_notagcheck(sb) ((sb) && ((sb)->s_flags & MS_NOTAGCHECK))
11331 +
11332 +int dx_parse_tag(char *string, vtag_t *tag, int remove, int *mnt_flags,
11333 +                unsigned long *flags);
11334 +
11335 +#ifdef CONFIG_PROPAGATE
11336 +
11337 +void __dx_propagate_tag(struct nameidata *nd, struct inode *inode);
11338 +
11339 +#define dx_propagate_tag(n, i) __dx_propagate_tag(n, i)
11340 +
11341 +#else
11342 +#define dx_propagate_tag(n, i) do { } while (0)
11343 +#endif
11344 +
11345 +#endif /* _DX_TAG_H */
11346 diff -NurpP --minimal linux-4.4.111/include/linux/vserver/tag_cmd.h linux-4.4.111-vs2.3.9.5/include/linux/vserver/tag_cmd.h
11347 --- linux-4.4.111/include/linux/vserver/tag_cmd.h       1970-01-01 00:00:00.000000000 +0000
11348 +++ linux-4.4.111-vs2.3.9.5/include/linux/vserver/tag_cmd.h     2018-01-09 16:36:32.000000000 +0000
11349 @@ -0,0 +1,10 @@
11350 +#ifndef _VSERVER_TAG_CMD_H
11351 +#define _VSERVER_TAG_CMD_H
11352 +
11353 +#include <uapi/vserver/tag_cmd.h>
11354 +
11355 +extern int vc_task_tag(uint32_t);
11356 +
11357 +extern int vc_tag_migrate(uint32_t);
11358 +
11359 +#endif /* _VSERVER_TAG_CMD_H */
11360 diff -NurpP --minimal linux-4.4.111/include/net/addrconf.h linux-4.4.111-vs2.3.9.5/include/net/addrconf.h
11361 --- linux-4.4.111/include/net/addrconf.h        2018-01-11 07:57:48.000000000 +0000
11362 +++ linux-4.4.111-vs2.3.9.5/include/net/addrconf.h      2018-01-09 16:36:32.000000000 +0000
11363 @@ -84,7 +84,7 @@ struct inet6_ifaddr *ipv6_get_ifaddr(str
11364
11365  int ipv6_dev_get_saddr(struct net *net, const struct net_device *dev,
11366                        const struct in6_addr *daddr, unsigned int srcprefs,
11367 -                      struct in6_addr *saddr);
11368 +                      struct in6_addr *saddr, struct nx_info *nxi);
11369  int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr,
11370                       u32 banned_flags);
11371  int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
11372 diff -NurpP --minimal linux-4.4.111/include/net/af_unix.h linux-4.4.111-vs2.3.9.5/include/net/af_unix.h
11373 --- linux-4.4.111/include/net/af_unix.h 2018-01-11 07:57:48.000000000 +0000
11374 +++ linux-4.4.111-vs2.3.9.5/include/net/af_unix.h       2018-01-09 16:36:32.000000000 +0000
11375 @@ -4,6 +4,7 @@
11376  #include <linux/socket.h>
11377  #include <linux/un.h>
11378  #include <linux/mutex.h>
11379 +// #include <linux/vs_base.h>
11380  #include <net/sock.h>
11381
11382  void unix_inflight(struct user_struct *user, struct file *fp);
11383 diff -NurpP --minimal linux-4.4.111/include/net/inet_timewait_sock.h linux-4.4.111-vs2.3.9.5/include/net/inet_timewait_sock.h
11384 --- linux-4.4.111/include/net/inet_timewait_sock.h      2016-07-05 04:15:11.000000000 +0000
11385 +++ linux-4.4.111-vs2.3.9.5/include/net/inet_timewait_sock.h    2018-01-09 16:40:17.000000000 +0000
11386 @@ -71,6 +71,10 @@ struct inet_timewait_sock {
11387  #define tw_num                 __tw_common.skc_num
11388  #define tw_cookie              __tw_common.skc_cookie
11389  #define tw_dr                  __tw_common.skc_tw_dr
11390 +#define tw_xid                 __tw_common.skc_xid
11391 +#define tw_vx_info             __tw_common.skc_vx_info
11392 +#define tw_nid                 __tw_common.skc_nid
11393 +#define tw_nx_info             __tw_common.skc_nx_info
11394
11395         int                     tw_timeout;
11396         volatile unsigned char  tw_substate;
11397 diff -NurpP --minimal linux-4.4.111/include/net/ip6_route.h linux-4.4.111-vs2.3.9.5/include/net/ip6_route.h
11398 --- linux-4.4.111/include/net/ip6_route.h       2018-01-11 07:57:49.000000000 +0000
11399 +++ linux-4.4.111-vs2.3.9.5/include/net/ip6_route.h     2018-01-09 16:36:32.000000000 +0000
11400 @@ -90,7 +90,7 @@ int ip6_del_rt(struct rt6_info *);
11401
11402  int ip6_route_get_saddr(struct net *net, struct rt6_info *rt,
11403                         const struct in6_addr *daddr, unsigned int prefs,
11404 -                       struct in6_addr *saddr);
11405 +                       struct in6_addr *saddr, struct nx_info *nxi);
11406
11407  struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr,
11408                             const struct in6_addr *saddr, int oif, int flags);
11409 diff -NurpP --minimal linux-4.4.111/include/net/route.h linux-4.4.111-vs2.3.9.5/include/net/route.h
11410 --- linux-4.4.111/include/net/route.h   2016-07-05 04:15:11.000000000 +0000
11411 +++ linux-4.4.111-vs2.3.9.5/include/net/route.h 2018-01-09 16:39:47.000000000 +0000
11412 @@ -223,6 +223,9 @@ static inline void ip_rt_put(struct rtab
11413         dst_release(&rt->dst);
11414  }
11415
11416 +#include <linux/vs_base.h>
11417 +#include <linux/vs_inet.h>
11418 +
11419  #define IPTOS_RT_MASK  (IPTOS_TOS_MASK & ~3)
11420
11421  extern const __u8 ip_tos2prio[16];
11422 @@ -270,6 +273,9 @@ static inline void ip_route_connect_init
11423                            protocol, flow_flags, dst, src, dport, sport);
11424  }
11425
11426 +extern struct rtable *ip_v4_find_src(struct net *net, struct nx_info *,
11427 +       struct flowi4 *);
11428 +
11429  static inline struct rtable *ip_route_connect(struct flowi4 *fl4,
11430                                               __be32 dst, __be32 src, u32 tos,
11431                                               int oif, u8 protocol,
11432 @@ -278,6 +284,7 @@ static inline struct rtable *ip_route_co
11433  {
11434         struct net *net = sock_net(sk);
11435         struct rtable *rt;
11436 +       struct nx_info *nx_info = current_nx_info();
11437
11438         ip_route_connect_init(fl4, dst, src, tos, oif, protocol,
11439                               sport, dport, sk);
11440 @@ -291,7 +298,21 @@ static inline struct rtable *ip_route_co
11441
11442                 src = fl4->saddr;
11443         }
11444 -       if (!dst || !src) {
11445 +
11446 +       if (sk)
11447 +               nx_info = sk->sk_nx_info;
11448 +
11449 +       vxdprintk(VXD_CBIT(net, 4),
11450 +               "ip_route_connect(%p) %p,%p;%lx",
11451 +               sk, nx_info, sk->sk_socket,
11452 +               (sk->sk_socket?sk->sk_socket->flags:0));
11453 +
11454 +       rt = ip_v4_find_src(net, nx_info, fl4);
11455 +       if (IS_ERR(rt))
11456 +               return rt;
11457 +       ip_rt_put(rt);
11458 +
11459 +       if (!fl4->daddr || !fl4->saddr) {
11460                 rt = __ip_route_output_key(net, fl4);
11461                 if (IS_ERR(rt))
11462                         return rt;
11463 diff -NurpP --minimal linux-4.4.111/include/net/sock.h linux-4.4.111-vs2.3.9.5/include/net/sock.h
11464 --- linux-4.4.111/include/net/sock.h    2018-01-11 07:57:49.000000000 +0000
11465 +++ linux-4.4.111-vs2.3.9.5/include/net/sock.h  2018-01-09 16:41:40.000000000 +0000
11466 @@ -201,6 +201,10 @@ struct sock_common {
11467         struct in6_addr         skc_v6_daddr;
11468         struct in6_addr         skc_v6_rcv_saddr;
11469  #endif
11470 +       vxid_t                  skc_xid;
11471 +       struct vx_info          *skc_vx_info;
11472 +       vnid_t                  skc_nid;
11473 +       struct nx_info          *skc_nx_info;
11474
11475         atomic64_t              skc_cookie;
11476
11477 @@ -349,8 +353,12 @@ struct sock {
11478  #define sk_prot                        __sk_common.skc_prot
11479  #define sk_net                 __sk_common.skc_net
11480  #define sk_v6_daddr            __sk_common.skc_v6_daddr
11481 -#define sk_v6_rcv_saddr        __sk_common.skc_v6_rcv_saddr
11482 +#define sk_v6_rcv_saddr                __sk_common.skc_v6_rcv_saddr
11483  #define sk_cookie              __sk_common.skc_cookie
11484 +#define sk_xid                 __sk_common.skc_xid
11485 +#define sk_vx_info             __sk_common.skc_vx_info
11486 +#define sk_nid                 __sk_common.skc_nid
11487 +#define sk_nx_info             __sk_common.skc_nx_info
11488  #define sk_incoming_cpu                __sk_common.skc_incoming_cpu
11489  #define sk_flags               __sk_common.skc_flags
11490  #define sk_rxhash              __sk_common.skc_rxhash
11491 diff -NurpP --minimal linux-4.4.111/include/uapi/Kbuild linux-4.4.111-vs2.3.9.5/include/uapi/Kbuild
11492 --- linux-4.4.111/include/uapi/Kbuild   2015-04-12 22:12:50.000000000 +0000
11493 +++ linux-4.4.111-vs2.3.9.5/include/uapi/Kbuild 2018-01-09 16:36:32.000000000 +0000
11494 @@ -13,3 +13,4 @@ header-y += drm/
11495  header-y += xen/
11496  header-y += scsi/
11497  header-y += misc/
11498 +header-y += vserver/
11499 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/capability.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/capability.h
11500 --- linux-4.4.111/include/uapi/linux/capability.h       2015-04-12 22:12:50.000000000 +0000
11501 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/capability.h     2018-01-09 16:36:32.000000000 +0000
11502 @@ -259,6 +259,7 @@ struct vfs_cap_data {
11503     arbitrary SCSI commands */
11504  /* Allow setting encryption key on loopback filesystem */
11505  /* Allow setting zone reclaim policy */
11506 +/* Allow the selection of a security context */
11507
11508  #define CAP_SYS_ADMIN        21
11509
11510 @@ -354,7 +355,12 @@ struct vfs_cap_data {
11511
11512  #define CAP_LAST_CAP         CAP_AUDIT_READ
11513
11514 -#define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
11515 +/* Allow context manipulations */
11516 +/* Allow changing context info on files */
11517 +
11518 +#define CAP_CONTEXT         63
11519 +
11520 +#define cap_valid(x) ((x) >= 0 && ((x) <= CAP_LAST_CAP || (x) == CAP_CONTEXT))
11521
11522  /*
11523   * Bit location of each capability (used by user-space library and kernel)
11524 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/fs.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/fs.h
11525 --- linux-4.4.111/include/uapi/linux/fs.h       2016-07-05 04:15:11.000000000 +0000
11526 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/fs.h     2018-01-09 16:47:48.000000000 +0000
11527 @@ -91,6 +91,9 @@ struct inodes_stat_t {
11528  #define MS_I_VERSION   (1<<23) /* Update inode I_version field */
11529  #define MS_STRICTATIME (1<<24) /* Always perform atime updates */
11530  #define MS_LAZYTIME    (1<<25) /* Update the on-disk [acm]times lazily */
11531 +#define MS_TAGGED      (1<<8)  /* use generic inode tagging */
11532 +#define MS_NOTAGCHECK  (1<<9)  /* don't check tags */
11533 +#define MS_TAGID       (1<<26) /* use specific tag for this mount */
11534
11535  /* These sb flags are internal to the kernel */
11536  #define MS_NOSEC       (1<<28)
11537 @@ -197,12 +200,15 @@ struct inodes_stat_t {
11538  #define FS_EXTENT_FL                   0x00080000 /* Extents */
11539  #define FS_DIRECTIO_FL                 0x00100000 /* Use direct i/o */
11540  #define FS_NOCOW_FL                    0x00800000 /* Do not cow file */
11541 +#define FS_IXUNLINK_FL                 0x08000000 /* Immutable invert on unlink */
11542  #define FS_PROJINHERIT_FL              0x20000000 /* Create with parents projid */
11543  #define FS_RESERVED_FL                 0x80000000 /* reserved for ext2 lib */
11544
11545 -#define FS_FL_USER_VISIBLE             0x0003DFFF /* User visible flags */
11546 -#define FS_FL_USER_MODIFIABLE          0x000380FF /* User modifiable flags */
11547 -
11548 +#define FS_BARRIER_FL                  0x04000000 /* Barrier for chroot() */
11549 +#define FS_COW_FL                      0x20000000 /* Copy on Write marker */
11550 +
11551 +#define FS_FL_USER_VISIBLE             0x0103DFFF /* User visible flags */
11552 +#define FS_FL_USER_MODIFIABLE          0x010380FF /* User modifiable flags */
11553
11554  #define SYNC_FILE_RANGE_WAIT_BEFORE    1
11555  #define SYNC_FILE_RANGE_WRITE          2
11556 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/gfs2_ondisk.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/gfs2_ondisk.h
11557 --- linux-4.4.111/include/uapi/linux/gfs2_ondisk.h      2015-04-12 22:12:50.000000000 +0000
11558 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/gfs2_ondisk.h    2018-01-09 16:36:32.000000000 +0000
11559 @@ -225,6 +225,9 @@ enum {
11560         gfs2fl_Sync             = 8,
11561         gfs2fl_System           = 9,
11562         gfs2fl_TopLevel         = 10,
11563 +       gfs2fl_IXUnlink         = 16,
11564 +       gfs2fl_Barrier          = 17,
11565 +       gfs2fl_Cow              = 18,
11566         gfs2fl_TruncInProg      = 29,
11567         gfs2fl_InheritDirectio  = 30,
11568         gfs2fl_InheritJdata     = 31,
11569 @@ -242,6 +245,9 @@ enum {
11570  #define GFS2_DIF_SYNC                  0x00000100
11571  #define GFS2_DIF_SYSTEM                        0x00000200 /* New in gfs2 */
11572  #define GFS2_DIF_TOPDIR                        0x00000400 /* New in gfs2 */
11573 +#define GFS2_DIF_IXUNLINK               0x00010000
11574 +#define GFS2_DIF_BARRIER                0x00020000
11575 +#define GFS2_DIF_COW                    0x00040000
11576  #define GFS2_DIF_TRUNC_IN_PROG         0x20000000 /* New in gfs2 */
11577  #define GFS2_DIF_INHERIT_DIRECTIO      0x40000000 /* only in gfs1 */
11578  #define GFS2_DIF_INHERIT_JDATA         0x80000000
11579 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/if_tun.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/if_tun.h
11580 --- linux-4.4.111/include/uapi/linux/if_tun.h   2015-10-29 09:21:42.000000000 +0000
11581 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/if_tun.h 2018-01-09 16:46:34.000000000 +0000
11582 @@ -56,6 +56,7 @@
11583   */
11584  #define TUNSETVNETBE _IOW('T', 222, int)
11585  #define TUNGETVNETBE _IOR('T', 223, int)
11586 +#define TUNSETNID    _IOW('T', 224, int)
11587
11588  /* TUNSETIFF ifr flags */
11589  #define IFF_TUN                0x0001
11590 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/major.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/major.h
11591 --- linux-4.4.111/include/uapi/linux/major.h    2015-04-12 22:12:50.000000000 +0000
11592 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/major.h  2018-01-09 16:36:33.000000000 +0000
11593 @@ -15,6 +15,7 @@
11594  #define HD_MAJOR               IDE0_MAJOR
11595  #define PTY_SLAVE_MAJOR                3
11596  #define TTY_MAJOR              4
11597 +#define VROOT_MAJOR            4
11598  #define TTYAUX_MAJOR           5
11599  #define LP_MAJOR               6
11600  #define VCS_MAJOR              7
11601 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/nfs_mount.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/nfs_mount.h
11602 --- linux-4.4.111/include/uapi/linux/nfs_mount.h        2015-04-12 22:12:50.000000000 +0000
11603 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/nfs_mount.h      2018-01-09 16:36:33.000000000 +0000
11604 @@ -63,7 +63,8 @@ struct nfs_mount_data {
11605  #define NFS_MOUNT_SECFLAVOUR   0x2000  /* 5 non-text parsed mount data only */
11606  #define NFS_MOUNT_NORDIRPLUS   0x4000  /* 5 */
11607  #define NFS_MOUNT_UNSHARED     0x8000  /* 5 */
11608 -#define NFS_MOUNT_FLAGMASK     0xFFFF
11609 +#define NFS_MOUNT_TAGGED       0x10000 /* context tagging */
11610 +#define NFS_MOUNT_FLAGMASK     0x1FFFF
11611
11612  /* The following are for internal use only */
11613  #define NFS_MOUNT_LOOKUP_CACHE_NONEG   0x10000
11614 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/reboot.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/reboot.h
11615 --- linux-4.4.111/include/uapi/linux/reboot.h   2015-04-12 22:12:50.000000000 +0000
11616 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/reboot.h 2018-01-09 16:36:33.000000000 +0000
11617 @@ -33,7 +33,7 @@
11618  #define        LINUX_REBOOT_CMD_RESTART2       0xA1B2C3D4
11619  #define        LINUX_REBOOT_CMD_SW_SUSPEND     0xD000FCE2
11620  #define        LINUX_REBOOT_CMD_KEXEC          0x45584543
11621 -
11622 +#define        LINUX_REBOOT_CMD_OOM            0xDEADBEEF
11623
11624
11625  #endif /* _UAPI_LINUX_REBOOT_H */
11626 diff -NurpP --minimal linux-4.4.111/include/uapi/linux/sysctl.h linux-4.4.111-vs2.3.9.5/include/uapi/linux/sysctl.h
11627 --- linux-4.4.111/include/uapi/linux/sysctl.h   2015-04-12 22:12:50.000000000 +0000
11628 +++ linux-4.4.111-vs2.3.9.5/include/uapi/linux/sysctl.h 2018-01-09 16:36:33.000000000 +0000
11629 @@ -60,6 +60,7 @@ enum
11630         CTL_ABI=9,              /* Binary emulation */
11631         CTL_CPU=10,             /* CPU stuff (speed scaling, etc) */
11632         CTL_ARLAN=254,          /* arlan wireless driver */
11633 +       CTL_VSERVER=4242,       /* Linux-VServer debug */
11634         CTL_S390DBF=5677,       /* s390 debug */
11635         CTL_SUNRPC=7249,        /* sunrpc debug */
11636         CTL_PM=9899,            /* frv power management */
11637 @@ -94,6 +95,7 @@ enum
11638
11639         KERN_PANIC=15,          /* int: panic timeout */
11640         KERN_REALROOTDEV=16,    /* real root device to mount after initrd */
11641 +       KERN_VSHELPER=17,       /* string: path to vshelper policy agent */
11642
11643         KERN_SPARC_REBOOT=21,   /* reboot command on Sparc */
11644         KERN_CTLALTDEL=22,      /* int: allow ctl-alt-del to reboot */
11645 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/Kbuild linux-4.4.111-vs2.3.9.5/include/uapi/vserver/Kbuild
11646 --- linux-4.4.111/include/uapi/vserver/Kbuild   1970-01-01 00:00:00.000000000 +0000
11647 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/Kbuild 2018-01-09 16:36:33.000000000 +0000
11648 @@ -0,0 +1,9 @@
11649 +
11650 +header-y += context_cmd.h network_cmd.h space_cmd.h \
11651 +       cacct_cmd.h cvirt_cmd.h limit_cmd.h dlimit_cmd.h \
11652 +       inode_cmd.h tag_cmd.h sched_cmd.h signal_cmd.h \
11653 +       debug_cmd.h device_cmd.h
11654 +
11655 +header-y += switch.h context.h network.h monitor.h \
11656 +       limit.h inode.h device.h
11657 +
11658 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/cacct_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/cacct_cmd.h
11659 --- linux-4.4.111/include/uapi/vserver/cacct_cmd.h      1970-01-01 00:00:00.000000000 +0000
11660 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/cacct_cmd.h    2018-01-09 16:36:33.000000000 +0000
11661 @@ -0,0 +1,15 @@
11662 +#ifndef _UAPI_VS_CACCT_CMD_H
11663 +#define _UAPI_VS_CACCT_CMD_H
11664 +
11665 +
11666 +/* virtual host info name commands */
11667 +
11668 +#define VCMD_sock_stat         VC_CMD(VSTAT, 5, 0)
11669 +
11670 +struct vcmd_sock_stat_v0 {
11671 +       uint32_t field;
11672 +       uint32_t count[3];
11673 +       uint64_t total[3];
11674 +};
11675 +
11676 +#endif /* _UAPI_VS_CACCT_CMD_H */
11677 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/context.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/context.h
11678 --- linux-4.4.111/include/uapi/vserver/context.h        1970-01-01 00:00:00.000000000 +0000
11679 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/context.h      2018-01-09 16:36:33.000000000 +0000
11680 @@ -0,0 +1,81 @@
11681 +#ifndef _UAPI_VS_CONTEXT_H
11682 +#define _UAPI_VS_CONTEXT_H
11683 +
11684 +#include <linux/types.h>
11685 +#include <linux/capability.h>
11686 +
11687 +
11688 +/* context flags */
11689 +
11690 +#define VXF_INFO_SCHED         0x00000002
11691 +#define VXF_INFO_NPROC         0x00000004
11692 +#define VXF_INFO_PRIVATE       0x00000008
11693 +
11694 +#define VXF_INFO_INIT          0x00000010
11695 +#define VXF_INFO_HIDE          0x00000020
11696 +#define VXF_INFO_ULIMIT                0x00000040
11697 +#define VXF_INFO_NSPACE                0x00000080
11698 +
11699 +#define VXF_SCHED_HARD         0x00000100
11700 +#define VXF_SCHED_PRIO         0x00000200
11701 +#define VXF_SCHED_PAUSE                0x00000400
11702 +
11703 +#define VXF_VIRT_MEM           0x00010000
11704 +#define VXF_VIRT_UPTIME                0x00020000
11705 +#define VXF_VIRT_CPU           0x00040000
11706 +#define VXF_VIRT_LOAD          0x00080000
11707 +#define VXF_VIRT_TIME          0x00100000
11708 +
11709 +#define VXF_HIDE_MOUNT         0x01000000
11710 +/* was VXF_HIDE_NETIF          0x02000000 */
11711 +#define VXF_HIDE_VINFO         0x04000000
11712 +
11713 +#define VXF_STATE_SETUP                (1ULL << 32)
11714 +#define VXF_STATE_INIT         (1ULL << 33)
11715 +#define VXF_STATE_ADMIN                (1ULL << 34)
11716 +
11717 +#define VXF_SC_HELPER          (1ULL << 36)
11718 +#define VXF_REBOOT_KILL                (1ULL << 37)
11719 +#define VXF_PERSISTENT         (1ULL << 38)
11720 +
11721 +#define VXF_FORK_RSS           (1ULL << 48)
11722 +#define VXF_PROLIFIC           (1ULL << 49)
11723 +
11724 +#define VXF_IGNEG_NICE         (1ULL << 52)
11725 +
11726 +#define VXF_ONE_TIME           (0x0007ULL << 32)
11727 +
11728 +#define VXF_INIT_SET           (VXF_STATE_SETUP | VXF_STATE_INIT | VXF_STATE_ADMIN)
11729 +
11730 +
11731 +/* context migration */
11732 +
11733 +#define VXM_SET_INIT           0x00000001
11734 +#define VXM_SET_REAPER         0x00000002
11735 +
11736 +/* context caps */
11737 +
11738 +#define VXC_SET_UTSNAME                0x00000001
11739 +#define VXC_SET_RLIMIT         0x00000002
11740 +#define VXC_FS_SECURITY                0x00000004
11741 +#define VXC_FS_TRUSTED         0x00000008
11742 +#define VXC_TIOCSTI            0x00000010
11743 +
11744 +/* was VXC_RAW_ICMP            0x00000100 */
11745 +#define VXC_SYSLOG             0x00001000
11746 +#define VXC_OOM_ADJUST         0x00002000
11747 +#define VXC_AUDIT_CONTROL      0x00004000
11748 +
11749 +#define VXC_SECURE_MOUNT       0x00010000
11750 +/* #define VXC_SECURE_REMOUNT  0x00020000 */
11751 +#define VXC_BINARY_MOUNT       0x00040000
11752 +#define VXC_DEV_MOUNT          0x00080000
11753 +
11754 +#define VXC_QUOTA_CTL          0x00100000
11755 +#define VXC_ADMIN_MAPPER       0x00200000
11756 +#define VXC_ADMIN_CLOOP                0x00400000
11757 +
11758 +#define VXC_KTHREAD            0x01000000
11759 +#define VXC_NAMESPACE          0x02000000
11760 +
11761 +#endif /* _UAPI_VS_CONTEXT_H */
11762 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/context_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/context_cmd.h
11763 --- linux-4.4.111/include/uapi/vserver/context_cmd.h    1970-01-01 00:00:00.000000000 +0000
11764 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/context_cmd.h  2018-01-09 16:36:33.000000000 +0000
11765 @@ -0,0 +1,115 @@
11766 +#ifndef _UAPI_VS_CONTEXT_CMD_H
11767 +#define _UAPI_VS_CONTEXT_CMD_H
11768 +
11769 +
11770 +/* vinfo commands */
11771 +
11772 +#define VCMD_task_xid          VC_CMD(VINFO, 1, 0)
11773 +
11774 +
11775 +#define VCMD_vx_info           VC_CMD(VINFO, 5, 0)
11776 +
11777 +struct vcmd_vx_info_v0 {
11778 +       uint32_t xid;
11779 +       uint32_t initpid;
11780 +       /* more to come */
11781 +};
11782 +
11783 +
11784 +#define VCMD_ctx_stat          VC_CMD(VSTAT, 0, 0)
11785 +
11786 +struct vcmd_ctx_stat_v0 {
11787 +       uint32_t usecnt;
11788 +       uint32_t tasks;
11789 +       /* more to come */
11790 +};
11791 +
11792 +
11793 +/* context commands */
11794 +
11795 +#define VCMD_ctx_create_v0     VC_CMD(VPROC, 1, 0)
11796 +#define VCMD_ctx_create                VC_CMD(VPROC, 1, 1)
11797 +
11798 +struct vcmd_ctx_create {
11799 +       uint64_t flagword;
11800 +};
11801 +
11802 +#define VCMD_ctx_migrate_v0    VC_CMD(PROCMIG, 1, 0)
11803 +#define VCMD_ctx_migrate       VC_CMD(PROCMIG, 1, 1)
11804 +
11805 +struct vcmd_ctx_migrate {
11806 +       uint64_t flagword;
11807 +};
11808 +
11809 +
11810 +
11811 +/* flag commands */
11812 +
11813 +#define VCMD_get_cflags                VC_CMD(FLAGS, 1, 0)
11814 +#define VCMD_set_cflags                VC_CMD(FLAGS, 2, 0)
11815 +
11816 +struct vcmd_ctx_flags_v0 {
11817 +       uint64_t flagword;
11818 +       uint64_t mask;
11819 +};
11820 +
11821 +
11822 +
11823 +/* context caps commands */
11824 +
11825 +#define VCMD_get_ccaps         VC_CMD(FLAGS, 3, 1)
11826 +#define VCMD_set_ccaps         VC_CMD(FLAGS, 4, 1)
11827 +
11828 +struct vcmd_ctx_caps_v1 {
11829 +       uint64_t ccaps;
11830 +       uint64_t cmask;
11831 +};
11832 +
11833 +
11834 +
11835 +/* bcaps commands */
11836 +
11837 +#define VCMD_get_bcaps         VC_CMD(FLAGS, 9, 0)
11838 +#define VCMD_set_bcaps         VC_CMD(FLAGS, 10, 0)
11839 +
11840 +struct vcmd_bcaps {
11841 +       uint64_t bcaps;
11842 +       uint64_t bmask;
11843 +};
11844 +
11845 +
11846 +
11847 +/* umask commands */
11848 +
11849 +#define VCMD_get_umask         VC_CMD(FLAGS, 13, 0)
11850 +#define VCMD_set_umask         VC_CMD(FLAGS, 14, 0)
11851 +
11852 +struct vcmd_umask {
11853 +       uint64_t umask;
11854 +       uint64_t mask;
11855 +};
11856 +
11857 +
11858 +
11859 +/* wmask commands */
11860 +
11861 +#define VCMD_get_wmask         VC_CMD(FLAGS, 15, 0)
11862 +#define VCMD_set_wmask         VC_CMD(FLAGS, 16, 0)
11863 +
11864 +struct vcmd_wmask {
11865 +       uint64_t wmask;
11866 +       uint64_t mask;
11867 +};
11868 +
11869 +
11870 +
11871 +/* OOM badness */
11872 +
11873 +#define VCMD_get_badness       VC_CMD(MEMCTRL, 5, 0)
11874 +#define VCMD_set_badness       VC_CMD(MEMCTRL, 6, 0)
11875 +
11876 +struct vcmd_badness_v0 {
11877 +       int64_t bias;
11878 +};
11879 +
11880 +#endif /* _UAPI_VS_CONTEXT_CMD_H */
11881 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/cvirt_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/cvirt_cmd.h
11882 --- linux-4.4.111/include/uapi/vserver/cvirt_cmd.h      1970-01-01 00:00:00.000000000 +0000
11883 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/cvirt_cmd.h    2018-01-09 16:36:33.000000000 +0000
11884 @@ -0,0 +1,41 @@
11885 +#ifndef _UAPI_VS_CVIRT_CMD_H
11886 +#define _UAPI_VS_CVIRT_CMD_H
11887 +
11888 +
11889 +/* virtual host info name commands */
11890 +
11891 +#define VCMD_set_vhi_name      VC_CMD(VHOST, 1, 0)
11892 +#define VCMD_get_vhi_name      VC_CMD(VHOST, 2, 0)
11893 +
11894 +struct vcmd_vhi_name_v0 {
11895 +       uint32_t field;
11896 +       char name[65];
11897 +};
11898 +
11899 +
11900 +enum vhi_name_field {
11901 +       VHIN_CONTEXT = 0,
11902 +       VHIN_SYSNAME,
11903 +       VHIN_NODENAME,
11904 +       VHIN_RELEASE,
11905 +       VHIN_VERSION,
11906 +       VHIN_MACHINE,
11907 +       VHIN_DOMAINNAME,
11908 +};
11909 +
11910 +
11911 +
11912 +#define VCMD_virt_stat         VC_CMD(VSTAT, 3, 0)
11913 +
11914 +struct vcmd_virt_stat_v0 {
11915 +       uint64_t offset;
11916 +       uint64_t uptime;
11917 +       uint32_t nr_threads;
11918 +       uint32_t nr_running;
11919 +       uint32_t nr_uninterruptible;
11920 +       uint32_t nr_onhold;
11921 +       uint32_t nr_forks;
11922 +       uint32_t load[3];
11923 +};
11924 +
11925 +#endif /* _UAPI_VS_CVIRT_CMD_H */
11926 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/debug_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/debug_cmd.h
11927 --- linux-4.4.111/include/uapi/vserver/debug_cmd.h      1970-01-01 00:00:00.000000000 +0000
11928 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/debug_cmd.h    2018-01-09 16:36:33.000000000 +0000
11929 @@ -0,0 +1,24 @@
11930 +#ifndef _UAPI_VS_DEBUG_CMD_H
11931 +#define _UAPI_VS_DEBUG_CMD_H
11932 +
11933 +
11934 +/* debug commands */
11935 +
11936 +#define VCMD_dump_history      VC_CMD(DEBUG, 1, 0)
11937 +
11938 +#define VCMD_read_history      VC_CMD(DEBUG, 5, 0)
11939 +#define VCMD_read_monitor      VC_CMD(DEBUG, 6, 0)
11940 +
11941 +struct  vcmd_read_history_v0 {
11942 +       uint32_t index;
11943 +       uint32_t count;
11944 +       char __user *data;
11945 +};
11946 +
11947 +struct  vcmd_read_monitor_v0 {
11948 +       uint32_t index;
11949 +       uint32_t count;
11950 +       char __user *data;
11951 +};
11952 +
11953 +#endif /* _UAPI_VS_DEBUG_CMD_H */
11954 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/device.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/device.h
11955 --- linux-4.4.111/include/uapi/vserver/device.h 1970-01-01 00:00:00.000000000 +0000
11956 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/device.h       2018-01-09 16:36:33.000000000 +0000
11957 @@ -0,0 +1,12 @@
11958 +#ifndef _UAPI_VS_DEVICE_H
11959 +#define _UAPI_VS_DEVICE_H
11960 +
11961 +
11962 +#define DATTR_CREATE   0x00000001
11963 +#define DATTR_OPEN     0x00000002
11964 +
11965 +#define DATTR_REMAP    0x00000010
11966 +
11967 +#define DATTR_MASK     0x00000013
11968 +
11969 +#endif /* _UAPI_VS_DEVICE_H */
11970 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/device_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/device_cmd.h
11971 --- linux-4.4.111/include/uapi/vserver/device_cmd.h     1970-01-01 00:00:00.000000000 +0000
11972 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/device_cmd.h   2018-01-09 16:36:33.000000000 +0000
11973 @@ -0,0 +1,16 @@
11974 +#ifndef _UAPI_VS_DEVICE_CMD_H
11975 +#define _UAPI_VS_DEVICE_CMD_H
11976 +
11977 +
11978 +/*  device vserver commands */
11979 +
11980 +#define VCMD_set_mapping       VC_CMD(DEVICE, 1, 0)
11981 +#define VCMD_unset_mapping     VC_CMD(DEVICE, 2, 0)
11982 +
11983 +struct vcmd_set_mapping_v0 {
11984 +       const char __user *device;
11985 +       const char __user *target;
11986 +       uint32_t flags;
11987 +};
11988 +
11989 +#endif /* _UAPI_VS_DEVICE_CMD_H */
11990 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/dlimit_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/dlimit_cmd.h
11991 --- linux-4.4.111/include/uapi/vserver/dlimit_cmd.h     1970-01-01 00:00:00.000000000 +0000
11992 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/dlimit_cmd.h   2018-01-09 16:36:33.000000000 +0000
11993 @@ -0,0 +1,67 @@
11994 +#ifndef _UAPI_VS_DLIMIT_CMD_H
11995 +#define _UAPI_VS_DLIMIT_CMD_H
11996 +
11997 +
11998 +/*  dlimit vserver commands */
11999 +
12000 +#define VCMD_add_dlimit                VC_CMD(DLIMIT, 1, 0)
12001 +#define VCMD_rem_dlimit                VC_CMD(DLIMIT, 2, 0)
12002 +
12003 +#define VCMD_set_dlimit                VC_CMD(DLIMIT, 5, 0)
12004 +#define VCMD_get_dlimit                VC_CMD(DLIMIT, 6, 0)
12005 +
12006 +struct vcmd_ctx_dlimit_base_v0 {
12007 +       const char __user *name;
12008 +       uint32_t flags;
12009 +};
12010 +
12011 +struct vcmd_ctx_dlimit_v0 {
12012 +       const char __user *name;
12013 +       uint32_t space_used;                    /* used space in kbytes */
12014 +       uint32_t space_total;                   /* maximum space in kbytes */
12015 +       uint32_t inodes_used;                   /* used inodes */
12016 +       uint32_t inodes_total;                  /* maximum inodes */
12017 +       uint32_t reserved;                      /* reserved for root in % */
12018 +       uint32_t flags;
12019 +};
12020 +
12021 +#define CDLIM_UNSET            ((uint32_t)0UL)
12022 +#define CDLIM_INFINITY         ((uint32_t)~0UL)
12023 +#define CDLIM_KEEP             ((uint32_t)~1UL)
12024 +
12025 +#define DLIME_UNIT     0
12026 +#define DLIME_KILO     1
12027 +#define DLIME_MEGA     2
12028 +#define DLIME_GIGA     3
12029 +
12030 +#define DLIMF_SHIFT    0x10
12031 +
12032 +#define DLIMS_USED     0
12033 +#define DLIMS_TOTAL    2
12034 +
12035 +static inline
12036 +uint64_t dlimit_space_32to64(uint32_t val, uint32_t flags, int shift)
12037 +{
12038 +       int exp = (flags & DLIMF_SHIFT) ?
12039 +               (flags >> shift) & DLIME_GIGA : DLIME_KILO;
12040 +       return ((uint64_t)val) << (10 * exp);
12041 +}
12042 +
12043 +static inline
12044 +uint32_t dlimit_space_64to32(uint64_t val, uint32_t *flags, int shift)
12045 +{
12046 +       int exp = 0;
12047 +
12048 +       if (*flags & DLIMF_SHIFT) {
12049 +               while (val > (1LL << 32) && (exp < 3)) {
12050 +                       val >>= 10;
12051 +                       exp++;
12052 +               }
12053 +               *flags &= ~(DLIME_GIGA << shift);
12054 +               *flags |= exp << shift;
12055 +       } else
12056 +               val >>= 10;
12057 +       return val;
12058 +}
12059 +
12060 +#endif /* _UAPI_VS_DLIMIT_CMD_H */
12061 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/inode.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/inode.h
12062 --- linux-4.4.111/include/uapi/vserver/inode.h  1970-01-01 00:00:00.000000000 +0000
12063 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/inode.h        2018-01-09 16:36:33.000000000 +0000
12064 @@ -0,0 +1,23 @@
12065 +#ifndef _UAPI_VS_INODE_H
12066 +#define _UAPI_VS_INODE_H
12067 +
12068 +
12069 +#define IATTR_TAG      0x01000000
12070 +
12071 +#define IATTR_ADMIN    0x00000001
12072 +#define IATTR_WATCH    0x00000002
12073 +#define IATTR_HIDE     0x00000004
12074 +#define IATTR_FLAGS    0x00000007
12075 +
12076 +#define IATTR_BARRIER  0x00010000
12077 +#define IATTR_IXUNLINK 0x00020000
12078 +#define IATTR_IMMUTABLE 0x00040000
12079 +#define IATTR_COW      0x00080000
12080 +
12081 +
12082 +/* inode ioctls */
12083 +
12084 +#define FIOC_GETXFLG   _IOR('x', 5, long)
12085 +#define FIOC_SETXFLG   _IOW('x', 6, long)
12086 +
12087 +#endif /* _UAPI_VS_INODE_H */
12088 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/inode_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/inode_cmd.h
12089 --- linux-4.4.111/include/uapi/vserver/inode_cmd.h      1970-01-01 00:00:00.000000000 +0000
12090 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/inode_cmd.h    2018-01-09 16:36:33.000000000 +0000
12091 @@ -0,0 +1,26 @@
12092 +#ifndef _UAPI_VS_INODE_CMD_H
12093 +#define _UAPI_VS_INODE_CMD_H
12094 +
12095 +
12096 +/*  inode vserver commands */
12097 +
12098 +#define VCMD_get_iattr         VC_CMD(INODE, 1, 1)
12099 +#define VCMD_set_iattr         VC_CMD(INODE, 2, 1)
12100 +
12101 +#define VCMD_fget_iattr                VC_CMD(INODE, 3, 0)
12102 +#define VCMD_fset_iattr                VC_CMD(INODE, 4, 0)
12103 +
12104 +struct vcmd_ctx_iattr_v1 {
12105 +       const char __user *name;
12106 +       uint32_t tag;
12107 +       uint32_t flags;
12108 +       uint32_t mask;
12109 +};
12110 +
12111 +struct vcmd_ctx_fiattr_v0 {
12112 +       uint32_t tag;
12113 +       uint32_t flags;
12114 +       uint32_t mask;
12115 +};
12116 +
12117 +#endif /* _UAPI_VS_INODE_CMD_H */
12118 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/limit.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/limit.h
12119 --- linux-4.4.111/include/uapi/vserver/limit.h  1970-01-01 00:00:00.000000000 +0000
12120 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/limit.h        2018-01-09 16:36:33.000000000 +0000
12121 @@ -0,0 +1,14 @@
12122 +#ifndef _UAPI_VS_LIMIT_H
12123 +#define _UAPI_VS_LIMIT_H
12124 +
12125 +
12126 +#define VLIMIT_NSOCK   16
12127 +#define VLIMIT_OPENFD  17
12128 +#define VLIMIT_ANON    18
12129 +#define VLIMIT_SHMEM   19
12130 +#define VLIMIT_SEMARY  20
12131 +#define VLIMIT_NSEMS   21
12132 +#define VLIMIT_DENTRY  22
12133 +#define VLIMIT_MAPPED  23
12134 +
12135 +#endif /* _UAPI_VS_LIMIT_H */
12136 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/limit_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/limit_cmd.h
12137 --- linux-4.4.111/include/uapi/vserver/limit_cmd.h      1970-01-01 00:00:00.000000000 +0000
12138 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/limit_cmd.h    2018-01-09 16:36:33.000000000 +0000
12139 @@ -0,0 +1,40 @@
12140 +#ifndef _UAPI_VS_LIMIT_CMD_H
12141 +#define _UAPI_VS_LIMIT_CMD_H
12142 +
12143 +
12144 +/*  rlimit vserver commands */
12145 +
12146 +#define VCMD_get_rlimit                VC_CMD(RLIMIT, 1, 0)
12147 +#define VCMD_set_rlimit                VC_CMD(RLIMIT, 2, 0)
12148 +#define VCMD_get_rlimit_mask   VC_CMD(RLIMIT, 3, 0)
12149 +#define VCMD_reset_hits                VC_CMD(RLIMIT, 7, 0)
12150 +#define VCMD_reset_minmax      VC_CMD(RLIMIT, 9, 0)
12151 +
12152 +struct vcmd_ctx_rlimit_v0 {
12153 +       uint32_t id;
12154 +       uint64_t minimum;
12155 +       uint64_t softlimit;
12156 +       uint64_t maximum;
12157 +};
12158 +
12159 +struct vcmd_ctx_rlimit_mask_v0 {
12160 +       uint32_t minimum;
12161 +       uint32_t softlimit;
12162 +       uint32_t maximum;
12163 +};
12164 +
12165 +#define VCMD_rlimit_stat       VC_CMD(VSTAT, 1, 0)
12166 +
12167 +struct vcmd_rlimit_stat_v0 {
12168 +       uint32_t id;
12169 +       uint32_t hits;
12170 +       uint64_t value;
12171 +       uint64_t minimum;
12172 +       uint64_t maximum;
12173 +};
12174 +
12175 +#define CRLIM_UNSET            (0ULL)
12176 +#define CRLIM_INFINITY         (~0ULL)
12177 +#define CRLIM_KEEP             (~1ULL)
12178 +
12179 +#endif /* _UAPI_VS_LIMIT_CMD_H */
12180 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/monitor.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/monitor.h
12181 --- linux-4.4.111/include/uapi/vserver/monitor.h        1970-01-01 00:00:00.000000000 +0000
12182 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/monitor.h      2018-01-09 16:36:33.000000000 +0000
12183 @@ -0,0 +1,96 @@
12184 +#ifndef _UAPI_VS_MONITOR_H
12185 +#define _UAPI_VS_MONITOR_H
12186 +
12187 +#include <linux/types.h>
12188 +
12189 +
12190 +enum {
12191 +       VXM_UNUSED = 0,
12192 +
12193 +       VXM_SYNC = 0x10,
12194 +
12195 +       VXM_UPDATE = 0x20,
12196 +       VXM_UPDATE_1,
12197 +       VXM_UPDATE_2,
12198 +
12199 +       VXM_RQINFO_1 = 0x24,
12200 +       VXM_RQINFO_2,
12201 +
12202 +       VXM_ACTIVATE = 0x40,
12203 +       VXM_DEACTIVATE,
12204 +       VXM_IDLE,
12205 +
12206 +       VXM_HOLD = 0x44,
12207 +       VXM_UNHOLD,
12208 +
12209 +       VXM_MIGRATE = 0x48,
12210 +       VXM_RESCHED,
12211 +
12212 +       /* all other bits are flags */
12213 +       VXM_SCHED = 0x80,
12214 +};
12215 +
12216 +struct _vxm_update_1 {
12217 +       uint32_t tokens_max;
12218 +       uint32_t fill_rate;
12219 +       uint32_t interval;
12220 +};
12221 +
12222 +struct _vxm_update_2 {
12223 +       uint32_t tokens_min;
12224 +       uint32_t fill_rate;
12225 +       uint32_t interval;
12226 +};
12227 +
12228 +struct _vxm_rqinfo_1 {
12229 +       uint16_t running;
12230 +       uint16_t onhold;
12231 +       uint16_t iowait;
12232 +       uint16_t uintr;
12233 +       uint32_t idle_tokens;
12234 +};
12235 +
12236 +struct _vxm_rqinfo_2 {
12237 +       uint32_t norm_time;
12238 +       uint32_t idle_time;
12239 +       uint32_t idle_skip;
12240 +};
12241 +
12242 +struct _vxm_sched {
12243 +       uint32_t tokens;
12244 +       uint32_t norm_time;
12245 +       uint32_t idle_time;
12246 +};
12247 +
12248 +struct _vxm_task {
12249 +       uint16_t pid;
12250 +       uint16_t state;
12251 +};
12252 +
12253 +struct _vxm_event {
12254 +       uint32_t jif;
12255 +       union {
12256 +               uint32_t seq;
12257 +               uint32_t sec;
12258 +       };
12259 +       union {
12260 +               uint32_t tokens;
12261 +               uint32_t nsec;
12262 +               struct _vxm_task tsk;
12263 +       };
12264 +};
12265 +
12266 +struct _vx_mon_entry {
12267 +       uint16_t type;
12268 +       uint16_t xid;
12269 +       union {
12270 +               struct _vxm_event ev;
12271 +               struct _vxm_sched sd;
12272 +               struct _vxm_update_1 u1;
12273 +               struct _vxm_update_2 u2;
12274 +               struct _vxm_rqinfo_1 q1;
12275 +               struct _vxm_rqinfo_2 q2;
12276 +       };
12277 +};
12278 +
12279 +#endif /* _UAPI_VS_MONITOR_H */
12280 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/network.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/network.h
12281 --- linux-4.4.111/include/uapi/vserver/network.h        1970-01-01 00:00:00.000000000 +0000
12282 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/network.h      2018-01-09 16:36:33.000000000 +0000
12283 @@ -0,0 +1,76 @@
12284 +#ifndef _UAPI_VS_NETWORK_H
12285 +#define _UAPI_VS_NETWORK_H
12286 +
12287 +#include <linux/types.h>
12288 +
12289 +
12290 +#define MAX_N_CONTEXT  65535   /* Arbitrary limit */
12291 +
12292 +
12293 +/* network flags */
12294 +
12295 +#define NXF_INFO_PRIVATE       0x00000008
12296 +
12297 +#define NXF_SINGLE_IP          0x00000100
12298 +#define NXF_LBACK_REMAP                0x00000200
12299 +#define NXF_LBACK_ALLOW                0x00000400
12300 +
12301 +#define NXF_HIDE_NETIF         0x02000000
12302 +#define NXF_HIDE_LBACK         0x04000000
12303 +
12304 +#define NXF_STATE_SETUP                (1ULL << 32)
12305 +#define NXF_STATE_ADMIN                (1ULL << 34)
12306 +
12307 +#define NXF_SC_HELPER          (1ULL << 36)
12308 +#define NXF_PERSISTENT         (1ULL << 38)
12309 +
12310 +#define NXF_ONE_TIME           (0x0005ULL << 32)
12311 +
12312 +
12313 +#define        NXF_INIT_SET            (__nxf_init_set())
12314 +
12315 +static inline uint64_t __nxf_init_set(void) {
12316 +       return    NXF_STATE_ADMIN
12317 +#ifdef CONFIG_VSERVER_AUTO_LBACK
12318 +               | NXF_LBACK_REMAP
12319 +               | NXF_HIDE_LBACK
12320 +#endif
12321 +#ifdef CONFIG_VSERVER_AUTO_SINGLE
12322 +               | NXF_SINGLE_IP
12323 +#endif
12324 +               | NXF_HIDE_NETIF;
12325 +}
12326 +
12327 +
12328 +/* network caps */
12329 +
12330 +#define NXC_TUN_CREATE         0x00000001
12331 +
12332 +#define NXC_RAW_ICMP           0x00000100
12333 +
12334 +#define NXC_MULTICAST          0x00001000
12335 +
12336 +
12337 +/* address types */
12338 +
12339 +#define NXA_TYPE_IPV4          0x0001
12340 +#define NXA_TYPE_IPV6          0x0002
12341 +
12342 +#define NXA_TYPE_NONE          0x0000
12343 +#define NXA_TYPE_ANY           0x00FF
12344 +
12345 +#define NXA_TYPE_ADDR          0x0010
12346 +#define NXA_TYPE_MASK          0x0020
12347 +#define NXA_TYPE_RANGE         0x0040
12348 +
12349 +#define NXA_MASK_ALL           (NXA_TYPE_ADDR | NXA_TYPE_MASK | NXA_TYPE_RANGE)
12350 +
12351 +#define NXA_MOD_BCAST          0x0100
12352 +#define NXA_MOD_LBACK          0x0200
12353 +
12354 +#define NXA_LOOPBACK           0x1000
12355 +
12356 +#define NXA_MASK_BIND          (NXA_MASK_ALL | NXA_MOD_BCAST | NXA_MOD_LBACK)
12357 +#define NXA_MASK_SHOW          (NXA_MASK_ALL | NXA_LOOPBACK)
12358 +
12359 +#endif /* _UAPI_VS_NETWORK_H */
12360 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/network_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/network_cmd.h
12361 --- linux-4.4.111/include/uapi/vserver/network_cmd.h    1970-01-01 00:00:00.000000000 +0000
12362 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/network_cmd.h  2018-01-09 16:36:33.000000000 +0000
12363 @@ -0,0 +1,123 @@
12364 +#ifndef _UAPI_VS_NETWORK_CMD_H
12365 +#define _UAPI_VS_NETWORK_CMD_H
12366 +
12367 +
12368 +/* vinfo commands */
12369 +
12370 +#define VCMD_task_nid          VC_CMD(VINFO, 2, 0)
12371 +
12372 +
12373 +#define VCMD_nx_info           VC_CMD(VINFO, 6, 0)
12374 +
12375 +struct vcmd_nx_info_v0 {
12376 +       uint32_t nid;
12377 +       /* more to come */
12378 +};
12379 +
12380 +
12381 +#include <linux/in.h>
12382 +#include <linux/in6.h>
12383 +
12384 +#define VCMD_net_create_v0     VC_CMD(VNET, 1, 0)
12385 +#define VCMD_net_create                VC_CMD(VNET, 1, 1)
12386 +
12387 +struct  vcmd_net_create {
12388 +       uint64_t flagword;
12389 +};
12390 +
12391 +#define VCMD_net_migrate       VC_CMD(NETMIG, 1, 0)
12392 +
12393 +#define VCMD_net_add           VC_CMD(NETALT, 1, 0)
12394 +#define VCMD_net_remove                VC_CMD(NETALT, 2, 0)
12395 +
12396 +struct vcmd_net_addr_v0 {
12397 +       uint16_t type;
12398 +       uint16_t count;
12399 +       struct in_addr ip[4];
12400 +       struct in_addr mask[4];
12401 +};
12402 +
12403 +#define VCMD_net_add_ipv4_v1   VC_CMD(NETALT, 1, 1)
12404 +#define VCMD_net_rem_ipv4_v1   VC_CMD(NETALT, 2, 1)
12405 +
12406 +struct vcmd_net_addr_ipv4_v1 {
12407 +       uint16_t type;
12408 +       uint16_t flags;
12409 +       struct in_addr ip;
12410 +       struct in_addr mask;
12411 +};
12412 +
12413 +#define VCMD_net_add_ipv4      VC_CMD(NETALT, 1, 2)
12414 +#define VCMD_net_rem_ipv4      VC_CMD(NETALT, 2, 2)
12415 +
12416 +struct vcmd_net_addr_ipv4_v2 {
12417 +       uint16_t type;
12418 +       uint16_t flags;
12419 +       struct in_addr ip;
12420 +       struct in_addr ip2;
12421 +       struct in_addr mask;
12422 +};
12423 +
12424 +#define VCMD_net_add_ipv6      VC_CMD(NETALT, 3, 1)
12425 +#define VCMD_net_remove_ipv6   VC_CMD(NETALT, 4, 1)
12426 +
12427 +struct vcmd_net_addr_ipv6_v1 {
12428 +       uint16_t type;
12429 +       uint16_t flags;
12430 +       uint32_t prefix;
12431 +       struct in6_addr ip;
12432 +       struct in6_addr mask;
12433 +};
12434 +
12435 +#define VCMD_add_match_ipv4    VC_CMD(NETALT, 5, 0)
12436 +#define VCMD_get_match_ipv4    VC_CMD(NETALT, 6, 0)
12437 +
12438 +struct vcmd_match_ipv4_v0 {
12439 +       uint16_t type;
12440 +       uint16_t flags;
12441 +       uint16_t parent;
12442 +       uint16_t prefix;
12443 +       struct in_addr ip;
12444 +       struct in_addr ip2;
12445 +       struct in_addr mask;
12446 +};
12447 +
12448 +#define VCMD_add_match_ipv6    VC_CMD(NETALT, 7, 0)
12449 +#define VCMD_get_match_ipv6    VC_CMD(NETALT, 8, 0)
12450 +
12451 +struct vcmd_match_ipv6_v0 {
12452 +       uint16_t type;
12453 +       uint16_t flags;
12454 +       uint16_t parent;
12455 +       uint16_t prefix;
12456 +       struct in6_addr ip;
12457 +       struct in6_addr ip2;
12458 +       struct in6_addr mask;
12459 +};
12460 +
12461 +
12462 +
12463 +
12464 +/* flag commands */
12465 +
12466 +#define VCMD_get_nflags                VC_CMD(FLAGS, 5, 0)
12467 +#define VCMD_set_nflags                VC_CMD(FLAGS, 6, 0)
12468 +
12469 +struct vcmd_net_flags_v0 {
12470 +       uint64_t flagword;
12471 +       uint64_t mask;
12472 +};
12473 +
12474 +
12475 +
12476 +/* network caps commands */
12477 +
12478 +#define VCMD_get_ncaps         VC_CMD(FLAGS, 7, 0)
12479 +#define VCMD_set_ncaps         VC_CMD(FLAGS, 8, 0)
12480 +
12481 +struct vcmd_net_caps_v0 {
12482 +       uint64_t ncaps;
12483 +       uint64_t cmask;
12484 +};
12485 +
12486 +#endif /* _UAPI_VS_NETWORK_CMD_H */
12487 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/sched_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/sched_cmd.h
12488 --- linux-4.4.111/include/uapi/vserver/sched_cmd.h      1970-01-01 00:00:00.000000000 +0000
12489 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/sched_cmd.h    2018-01-09 16:36:33.000000000 +0000
12490 @@ -0,0 +1,13 @@
12491 +#ifndef _UAPI_VS_SCHED_CMD_H
12492 +#define _UAPI_VS_SCHED_CMD_H
12493 +
12494 +
12495 +struct vcmd_prio_bias {
12496 +       int32_t cpu_id;
12497 +       int32_t prio_bias;
12498 +};
12499 +
12500 +#define VCMD_set_prio_bias     VC_CMD(SCHED, 4, 0)
12501 +#define VCMD_get_prio_bias     VC_CMD(SCHED, 5, 0)
12502 +
12503 +#endif /* _UAPI_VS_SCHED_CMD_H */
12504 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/signal_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/signal_cmd.h
12505 --- linux-4.4.111/include/uapi/vserver/signal_cmd.h     1970-01-01 00:00:00.000000000 +0000
12506 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/signal_cmd.h   2018-01-09 16:36:33.000000000 +0000
12507 @@ -0,0 +1,31 @@
12508 +#ifndef _UAPI_VS_SIGNAL_CMD_H
12509 +#define _UAPI_VS_SIGNAL_CMD_H
12510 +
12511 +
12512 +/*  signalling vserver commands */
12513 +
12514 +#define VCMD_ctx_kill          VC_CMD(PROCTRL, 1, 0)
12515 +#define VCMD_wait_exit         VC_CMD(EVENT, 99, 0)
12516 +
12517 +struct vcmd_ctx_kill_v0 {
12518 +       int32_t pid;
12519 +       int32_t sig;
12520 +};
12521 +
12522 +struct vcmd_wait_exit_v0 {
12523 +       int32_t reboot_cmd;
12524 +       int32_t exit_code;
12525 +};
12526 +
12527 +
12528 +/*  process alteration commands */
12529 +
12530 +#define VCMD_get_pflags                VC_CMD(PROCALT, 5, 0)
12531 +#define VCMD_set_pflags                VC_CMD(PROCALT, 6, 0)
12532 +
12533 +struct vcmd_pflags_v0 {
12534 +       uint32_t flagword;
12535 +       uint32_t mask;
12536 +};
12537 +
12538 +#endif /* _UAPI_VS_SIGNAL_CMD_H */
12539 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/space_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/space_cmd.h
12540 --- linux-4.4.111/include/uapi/vserver/space_cmd.h      1970-01-01 00:00:00.000000000 +0000
12541 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/space_cmd.h    2018-01-09 16:36:33.000000000 +0000
12542 @@ -0,0 +1,28 @@
12543 +#ifndef _UAPI_VS_SPACE_CMD_H
12544 +#define _UAPI_VS_SPACE_CMD_H
12545 +
12546 +
12547 +#define VCMD_enter_space_v0    VC_CMD(PROCALT, 1, 0)
12548 +#define VCMD_enter_space_v1    VC_CMD(PROCALT, 1, 1)
12549 +#define VCMD_enter_space       VC_CMD(PROCALT, 1, 2)
12550 +
12551 +#define VCMD_set_space_v0      VC_CMD(PROCALT, 3, 0)
12552 +#define VCMD_set_space_v1      VC_CMD(PROCALT, 3, 1)
12553 +#define VCMD_set_space         VC_CMD(PROCALT, 3, 2)
12554 +
12555 +#define VCMD_get_space_mask_v0 VC_CMD(PROCALT, 4, 0)
12556 +
12557 +#define VCMD_get_space_mask    VC_CMD(VSPACE, 0, 1)
12558 +#define VCMD_get_space_default VC_CMD(VSPACE, 1, 0)
12559 +
12560 +
12561 +struct vcmd_space_mask_v1 {
12562 +       uint64_t mask;
12563 +};
12564 +
12565 +struct vcmd_space_mask_v2 {
12566 +       uint64_t mask;
12567 +       uint32_t index;
12568 +};
12569 +
12570 +#endif /* _UAPI_VS_SPACE_CMD_H */
12571 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/switch.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/switch.h
12572 --- linux-4.4.111/include/uapi/vserver/switch.h 1970-01-01 00:00:00.000000000 +0000
12573 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/switch.h       2018-01-09 16:36:33.000000000 +0000
12574 @@ -0,0 +1,90 @@
12575 +#ifndef _UAPI_VS_SWITCH_H
12576 +#define _UAPI_VS_SWITCH_H
12577 +
12578 +#include <linux/types.h>
12579 +
12580 +
12581 +#define VC_CATEGORY(c)         (((c) >> 24) & 0x3F)
12582 +#define VC_COMMAND(c)          (((c) >> 16) & 0xFF)
12583 +#define VC_VERSION(c)          ((c) & 0xFFF)
12584 +
12585 +#define VC_CMD(c, i, v)                ((((VC_CAT_ ## c) & 0x3F) << 24) \
12586 +                               | (((i) & 0xFF) << 16) | ((v) & 0xFFF))
12587 +
12588 +/*
12589 +
12590 +  Syscall Matrix V2.8
12591 +
12592 +        |VERSION|CREATE |MODIFY |MIGRATE|CONTROL|EXPERIM| |SPECIAL|SPECIAL|
12593 +        |STATS  |DESTROY|ALTER  |CHANGE |LIMIT  |TEST   | |       |       |
12594 +        |INFO   |SETUP  |       |MOVE   |       |       | |       |       |
12595 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12596 +  SYSTEM |VERSION|VSETUP |VHOST  |       |       |       | |DEVICE |       |
12597 +  HOST   |     00|     01|     02|     03|     04|     05| |     06|     07|
12598 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12599 +  CPU    |       |VPROC  |PROCALT|PROCMIG|PROCTRL|       | |SCHED. |       |
12600 +  PROCESS|     08|     09|     10|     11|     12|     13| |     14|     15|
12601 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12602 +  MEMORY |       |       |       |       |MEMCTRL|       | |SWAP   |       |
12603 +        |     16|     17|     18|     19|     20|     21| |     22|     23|
12604 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12605 +  NETWORK|       |VNET   |NETALT |NETMIG |NETCTL |       | |SERIAL |       |
12606 +        |     24|     25|     26|     27|     28|     29| |     30|     31|
12607 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12608 +  DISK   |       |       |       |TAGMIG |DLIMIT |       | |INODE  |       |
12609 +  VFS    |     32|     33|     34|     35|     36|     37| |     38|     39|
12610 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12611 +  OTHER  |VSTAT  |       |       |       |       |       | |VINFO  |       |
12612 +        |     40|     41|     42|     43|     44|     45| |     46|     47|
12613 +  =======+=======+=======+=======+=======+=======+=======+ +=======+=======+
12614 +  SPECIAL|EVENT  |       |       |       |FLAGS  |       | |VSPACE |       |
12615 +        |     48|     49|     50|     51|     52|     53| |     54|     55|
12616 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12617 +  SPECIAL|DEBUG  |       |       |       |RLIMIT |SYSCALL| |       |COMPAT |
12618 +        |     56|     57|     58|     59|     60|TEST 61| |     62|     63|
12619 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12620 +
12621 +*/
12622 +
12623 +#define VC_CAT_VERSION         0
12624 +
12625 +#define VC_CAT_VSETUP          1
12626 +#define VC_CAT_VHOST           2
12627 +
12628 +#define VC_CAT_DEVICE          6
12629 +
12630 +#define VC_CAT_VPROC           9
12631 +#define VC_CAT_PROCALT         10
12632 +#define VC_CAT_PROCMIG         11
12633 +#define VC_CAT_PROCTRL         12
12634 +
12635 +#define VC_CAT_SCHED           14
12636 +#define VC_CAT_MEMCTRL         20
12637 +
12638 +#define VC_CAT_VNET            25
12639 +#define VC_CAT_NETALT          26
12640 +#define VC_CAT_NETMIG          27
12641 +#define VC_CAT_NETCTRL         28
12642 +
12643 +#define VC_CAT_TAGMIG          35
12644 +#define VC_CAT_DLIMIT          36
12645 +#define VC_CAT_INODE           38
12646 +
12647 +#define VC_CAT_VSTAT           40
12648 +#define VC_CAT_VINFO           46
12649 +#define VC_CAT_EVENT           48
12650 +
12651 +#define VC_CAT_FLAGS           52
12652 +#define VC_CAT_VSPACE          54
12653 +#define VC_CAT_DEBUG           56
12654 +#define VC_CAT_RLIMIT          60
12655 +
12656 +#define VC_CAT_SYSTEST         61
12657 +#define VC_CAT_COMPAT          63
12658 +
12659 +/*  query version */
12660 +
12661 +#define VCMD_get_version       VC_CMD(VERSION, 0, 0)
12662 +#define VCMD_get_vci           VC_CMD(VERSION, 1, 0)
12663 +
12664 +#endif /* _UAPI_VS_SWITCH_H */
12665 diff -NurpP --minimal linux-4.4.111/include/uapi/vserver/tag_cmd.h linux-4.4.111-vs2.3.9.5/include/uapi/vserver/tag_cmd.h
12666 --- linux-4.4.111/include/uapi/vserver/tag_cmd.h        1970-01-01 00:00:00.000000000 +0000
12667 +++ linux-4.4.111-vs2.3.9.5/include/uapi/vserver/tag_cmd.h      2018-01-09 16:36:33.000000000 +0000
12668 @@ -0,0 +1,14 @@
12669 +#ifndef _UAPI_VS_TAG_CMD_H
12670 +#define _UAPI_VS_TAG_CMD_H
12671 +
12672 +
12673 +/* vinfo commands */
12674 +
12675 +#define VCMD_task_tag          VC_CMD(VINFO, 3, 0)
12676 +
12677 +
12678 +/* context commands */
12679 +
12680 +#define VCMD_tag_migrate       VC_CMD(TAGMIG, 1, 0)
12681 +
12682 +#endif /* _UAPI_VS_TAG_CMD_H */
12683 diff -NurpP --minimal linux-4.4.111/init/Kconfig linux-4.4.111-vs2.3.9.5/init/Kconfig
12684 --- linux-4.4.111/init/Kconfig  2016-07-05 04:15:12.000000000 +0000
12685 +++ linux-4.4.111-vs2.3.9.5/init/Kconfig        2018-01-09 16:36:33.000000000 +0000
12686 @@ -927,6 +927,7 @@ config NUMA_BALANCING_DEFAULT_ENABLED
12687  menuconfig CGROUPS
12688         bool "Control Group support"
12689         select KERNFS
12690 +       default y
12691         help
12692           This option adds support for grouping sets of processes together, for
12693           use with process control subsystems such as Cpusets, CFS, memory
12694 diff -NurpP --minimal linux-4.4.111/init/main.c linux-4.4.111-vs2.3.9.5/init/main.c
12695 --- linux-4.4.111/init/main.c   2018-01-11 07:57:51.000000000 +0000
12696 +++ linux-4.4.111-vs2.3.9.5/init/main.c 2018-01-09 16:58:21.000000000 +0000
12697 @@ -82,6 +82,7 @@
12698  #include <linux/proc_ns.h>
12699  #include <linux/io.h>
12700  #include <linux/kaiser.h>
12701 +#include <linux/vserver/percpu.h>
12702
12703  #include <asm/io.h>
12704  #include <asm/bugs.h>
12705 diff -NurpP --minimal linux-4.4.111/ipc/mqueue.c linux-4.4.111-vs2.3.9.5/ipc/mqueue.c
12706 --- linux-4.4.111/ipc/mqueue.c  2018-01-11 07:57:51.000000000 +0000
12707 +++ linux-4.4.111-vs2.3.9.5/ipc/mqueue.c        2018-01-09 16:36:33.000000000 +0000
12708 @@ -35,6 +35,8 @@
12709  #include <linux/ipc_namespace.h>
12710  #include <linux/user_namespace.h>
12711  #include <linux/slab.h>
12712 +#include <linux/vs_context.h>
12713 +#include <linux/vs_limit.h>
12714
12715  #include <net/sock.h>
12716  #include "util.h"
12717 @@ -75,6 +77,7 @@ struct mqueue_inode_info {
12718         struct pid *notify_owner;
12719         struct user_namespace *notify_user_ns;
12720         struct user_struct *user;       /* user who created, for accounting */
12721 +       struct vx_info *vxi;
12722         struct sock *notify_sock;
12723         struct sk_buff *notify_cookie;
12724
12725 @@ -230,6 +233,7 @@ static struct inode *mqueue_get_inode(st
12726         if (S_ISREG(mode)) {
12727                 struct mqueue_inode_info *info;
12728                 unsigned long mq_bytes, mq_treesize;
12729 +               struct vx_info *vxi = current_vx_info();
12730
12731                 inode->i_fop = &mqueue_file_operations;
12732                 inode->i_size = FILENT_SIZE;
12733 @@ -243,6 +247,7 @@ static struct inode *mqueue_get_inode(st
12734                 info->notify_user_ns = NULL;
12735                 info->qsize = 0;
12736                 info->user = NULL;      /* set when all is ok */
12737 +               info->vxi = NULL;
12738                 info->msg_tree = RB_ROOT;
12739                 info->node_cache = NULL;
12740                 memset(&info->attr, 0, sizeof(info->attr));
12741 @@ -276,17 +281,20 @@ static struct inode *mqueue_get_inode(st
12742
12743                 spin_lock(&mq_lock);
12744                 if (u->mq_bytes + mq_bytes < u->mq_bytes ||
12745 -                   u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) {
12746 +                   u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE) ||
12747 +                   !vx_ipcmsg_avail(vxi, mq_bytes)) {
12748                         spin_unlock(&mq_lock);
12749                         /* mqueue_evict_inode() releases info->messages */
12750                         ret = -EMFILE;
12751                         goto out_inode;
12752                 }
12753                 u->mq_bytes += mq_bytes;
12754 +               vx_ipcmsg_add(vxi, u, mq_bytes);
12755                 spin_unlock(&mq_lock);
12756
12757                 /* all is ok */
12758                 info->user = get_uid(u);
12759 +               info->vxi = get_vx_info(vxi);
12760         } else if (S_ISDIR(mode)) {
12761                 inc_nlink(inode);
12762                 /* Some things misbehave if size == 0 on a directory */
12763 @@ -398,8 +406,11 @@ static void mqueue_evict_inode(struct in
12764
12765         user = info->user;
12766         if (user) {
12767 +               struct vx_info *vxi = info->vxi;
12768 +
12769                 spin_lock(&mq_lock);
12770                 user->mq_bytes -= mq_bytes;
12771 +               vx_ipcmsg_sub(vxi, user, mq_bytes);
12772                 /*
12773                  * get_ns_from_inode() ensures that the
12774                  * (ipc_ns = sb->s_fs_info) is either a valid ipc_ns
12775 @@ -409,6 +420,7 @@ static void mqueue_evict_inode(struct in
12776                 if (ipc_ns)
12777                         ipc_ns->mq_queues_count--;
12778                 spin_unlock(&mq_lock);
12779 +               put_vx_info(vxi);
12780                 free_uid(user);
12781         }
12782         if (ipc_ns)
12783 diff -NurpP --minimal linux-4.4.111/ipc/msg.c linux-4.4.111-vs2.3.9.5/ipc/msg.c
12784 --- linux-4.4.111/ipc/msg.c     2018-01-11 07:57:51.000000000 +0000
12785 +++ linux-4.4.111-vs2.3.9.5/ipc/msg.c   2018-01-09 16:36:33.000000000 +0000
12786 @@ -37,6 +37,7 @@
12787  #include <linux/rwsem.h>
12788  #include <linux/nsproxy.h>
12789  #include <linux/ipc_namespace.h>
12790 +#include <linux/vs_base.h>
12791
12792  #include <asm/current.h>
12793  #include <linux/uaccess.h>
12794 @@ -129,6 +130,7 @@ static int newque(struct ipc_namespace *
12795
12796         msq->q_perm.mode = msgflg & S_IRWXUGO;
12797         msq->q_perm.key = key;
12798 +       msq->q_perm.xid = vx_current_xid();
12799
12800         msq->q_perm.security = NULL;
12801         retval = security_msg_queue_alloc(msq);
12802 diff -NurpP --minimal linux-4.4.111/ipc/sem.c linux-4.4.111-vs2.3.9.5/ipc/sem.c
12803 --- linux-4.4.111/ipc/sem.c     2018-01-11 07:57:51.000000000 +0000
12804 +++ linux-4.4.111-vs2.3.9.5/ipc/sem.c   2018-01-09 16:36:33.000000000 +0000
12805 @@ -85,6 +85,8 @@
12806  #include <linux/rwsem.h>
12807  #include <linux/nsproxy.h>
12808  #include <linux/ipc_namespace.h>
12809 +#include <linux/vs_base.h>
12810 +#include <linux/vs_limit.h>
12811
12812  #include <linux/uaccess.h>
12813  #include "util.h"
12814 @@ -533,6 +535,7 @@ static int newary(struct ipc_namespace *
12815
12816         sma->sem_perm.mode = (semflg & S_IRWXUGO);
12817         sma->sem_perm.key = key;
12818 +       sma->sem_perm.xid = vx_current_xid();
12819
12820         sma->sem_perm.security = NULL;
12821         retval = security_sem_alloc(sma);
12822 @@ -563,6 +566,9 @@ static int newary(struct ipc_namespace *
12823                 return id;
12824         }
12825         ns->used_sems += nsems;
12826 +       /* FIXME: obsoleted? */
12827 +       vx_semary_inc(sma);
12828 +       vx_nsems_add(sma, nsems);
12829
12830         sem_unlock(sma, -1);
12831         rcu_read_unlock();
12832 @@ -1151,6 +1157,9 @@ static void freeary(struct ipc_namespace
12833
12834         wake_up_sem_queue_do(&tasks);
12835         ns->used_sems -= sma->sem_nsems;
12836 +       /* FIXME: obsoleted? */
12837 +       vx_nsems_sub(sma, sma->sem_nsems);
12838 +       vx_semary_dec(sma);
12839         ipc_rcu_putref(sma, sem_rcu_free);
12840  }
12841
12842 diff -NurpP --minimal linux-4.4.111/ipc/shm.c linux-4.4.111-vs2.3.9.5/ipc/shm.c
12843 --- linux-4.4.111/ipc/shm.c     2018-01-11 07:57:51.000000000 +0000
12844 +++ linux-4.4.111-vs2.3.9.5/ipc/shm.c   2018-01-09 16:36:33.000000000 +0000
12845 @@ -42,6 +42,8 @@
12846  #include <linux/nsproxy.h>
12847  #include <linux/mount.h>
12848  #include <linux/ipc_namespace.h>
12849 +#include <linux/vs_context.h>
12850 +#include <linux/vs_limit.h>
12851
12852  #include <linux/uaccess.h>
12853
12854 @@ -228,10 +230,14 @@ static void shm_open(struct vm_area_stru
12855  static void shm_destroy(struct ipc_namespace *ns, struct shmid_kernel *shp)
12856  {
12857         struct file *shm_file;
12858 +       struct vx_info *vxi = lookup_vx_info(shp->shm_perm.xid);
12859 +       int numpages = (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
12860
12861         shm_file = shp->shm_file;
12862         shp->shm_file = NULL;
12863 -       ns->shm_tot -= (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
12864 +       vx_ipcshm_sub(vxi, shp, numpages);
12865 +       ns->shm_tot -= numpages;
12866 +
12867         shm_rmid(ns, shp);
12868         shm_unlock(shp);
12869         if (!is_file_hugepages(shm_file))
12870 @@ -240,6 +246,7 @@ static void shm_destroy(struct ipc_names
12871                 user_shm_unlock(i_size_read(file_inode(shm_file)),
12872                                 shp->mlock_user);
12873         fput(shm_file);
12874 +       put_vx_info(vxi);
12875         ipc_rcu_putref(shp, shm_rcu_free);
12876  }
12877
12878 @@ -537,11 +544,15 @@ static int newseg(struct ipc_namespace *
12879                         ns->shm_tot + numpages > ns->shm_ctlall)
12880                 return -ENOSPC;
12881
12882 +       if (!vx_ipcshm_avail(current_vx_info(), numpages))
12883 +               return -ENOSPC;
12884 +
12885         shp = ipc_rcu_alloc(sizeof(*shp));
12886         if (!shp)
12887                 return -ENOMEM;
12888
12889         shp->shm_perm.key = key;
12890 +       shp->shm_perm.xid = vx_current_xid();
12891         shp->shm_perm.mode = (shmflg & S_IRWXUGO);
12892         shp->mlock_user = NULL;
12893
12894 @@ -612,6 +623,7 @@ static int newseg(struct ipc_namespace *
12895
12896         ipc_unlock_object(&shp->shm_perm);
12897         rcu_read_unlock();
12898 +       vx_ipcshm_add(current_vx_info(), key, numpages);
12899         return error;
12900
12901  no_id:
12902 diff -NurpP --minimal linux-4.4.111/kernel/Makefile linux-4.4.111-vs2.3.9.5/kernel/Makefile
12903 --- linux-4.4.111/kernel/Makefile       2016-07-05 04:12:38.000000000 +0000
12904 +++ linux-4.4.111-vs2.3.9.5/kernel/Makefile     2018-01-09 16:36:33.000000000 +0000
12905 @@ -29,6 +29,7 @@ obj-y += printk/
12906  obj-y += irq/
12907  obj-y += rcu/
12908  obj-y += livepatch/
12909 +obj-y += vserver/
12910
12911  obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
12912  obj-$(CONFIG_FREEZER) += freezer.o
12913 diff -NurpP --minimal linux-4.4.111/kernel/auditsc.c linux-4.4.111-vs2.3.9.5/kernel/auditsc.c
12914 --- linux-4.4.111/kernel/auditsc.c      2018-01-11 07:57:51.000000000 +0000
12915 +++ linux-4.4.111-vs2.3.9.5/kernel/auditsc.c    2018-01-09 16:36:33.000000000 +0000
12916 @@ -1962,7 +1962,7 @@ static int audit_set_loginuid_perm(kuid_
12917         if (is_audit_feature_set(AUDIT_FEATURE_LOGINUID_IMMUTABLE))
12918                 return -EPERM;
12919         /* it is set, you need permission */
12920 -       if (!capable(CAP_AUDIT_CONTROL))
12921 +       if (!vx_capable(CAP_AUDIT_CONTROL, VXC_AUDIT_CONTROL))
12922                 return -EPERM;
12923         /* reject if this is not an unset and we don't allow that */
12924         if (is_audit_feature_set(AUDIT_FEATURE_ONLY_UNSET_LOGINUID) && uid_valid(loginuid))
12925 diff -NurpP --minimal linux-4.4.111/kernel/capability.c linux-4.4.111-vs2.3.9.5/kernel/capability.c
12926 --- linux-4.4.111/kernel/capability.c   2018-01-11 07:57:51.000000000 +0000
12927 +++ linux-4.4.111-vs2.3.9.5/kernel/capability.c 2018-01-09 16:36:33.000000000 +0000
12928 @@ -17,6 +17,7 @@
12929  #include <linux/syscalls.h>
12930  #include <linux/pid_namespace.h>
12931  #include <linux/user_namespace.h>
12932 +#include <linux/vs_context.h>
12933  #include <asm/uaccess.h>
12934
12935  /*
12936 @@ -107,6 +108,7 @@ static int cap_validate_magic(cap_user_h
12937         return 0;
12938  }
12939
12940 +
12941  /*
12942   * The only thing that can change the capabilities of the current
12943   * process is the current process. As such, we can't be in this code
12944 @@ -344,6 +346,8 @@ bool has_ns_capability_noaudit(struct ta
12945         return (ret == 0);
12946  }
12947
12948 +#include <linux/vserver/base.h>
12949 +
12950  /**
12951   * has_capability_noaudit - Does a task have a capability (unaudited) in the
12952   * initial user ns
12953 diff -NurpP --minimal linux-4.4.111/kernel/compat.c linux-4.4.111-vs2.3.9.5/kernel/compat.c
12954 --- linux-4.4.111/kernel/compat.c       2015-07-06 20:41:43.000000000 +0000
12955 +++ linux-4.4.111-vs2.3.9.5/kernel/compat.c     2018-01-09 16:36:33.000000000 +0000
12956 @@ -27,6 +27,7 @@
12957  #include <linux/times.h>
12958  #include <linux/ptrace.h>
12959  #include <linux/gfp.h>
12960 +#include <linux/vs_time.h>
12961
12962  #include <asm/uaccess.h>
12963
12964 @@ -1059,7 +1060,7 @@ COMPAT_SYSCALL_DEFINE1(stime, compat_tim
12965         if (err)
12966                 return err;
12967
12968 -       do_settimeofday(&tv);
12969 +       vx_settimeofday(&tv);
12970         return 0;
12971  }
12972
12973 diff -NurpP --minimal linux-4.4.111/kernel/cred.c linux-4.4.111-vs2.3.9.5/kernel/cred.c
12974 --- linux-4.4.111/kernel/cred.c 2018-01-11 07:57:51.000000000 +0000
12975 +++ linux-4.4.111-vs2.3.9.5/kernel/cred.c       2018-01-09 16:36:33.000000000 +0000
12976 @@ -64,31 +64,6 @@ struct cred init_cred = {
12977         .group_info             = &init_groups,
12978  };
12979
12980 -static inline void set_cred_subscribers(struct cred *cred, int n)
12981 -{
12982 -#ifdef CONFIG_DEBUG_CREDENTIALS
12983 -       atomic_set(&cred->subscribers, n);
12984 -#endif
12985 -}
12986 -
12987 -static inline int read_cred_subscribers(const struct cred *cred)
12988 -{
12989 -#ifdef CONFIG_DEBUG_CREDENTIALS
12990 -       return atomic_read(&cred->subscribers);
12991 -#else
12992 -       return 0;
12993 -#endif
12994 -}
12995 -
12996 -static inline void alter_cred_subscribers(const struct cred *_cred, int n)
12997 -{
12998 -#ifdef CONFIG_DEBUG_CREDENTIALS
12999 -       struct cred *cred = (struct cred *) _cred;
13000 -
13001 -       atomic_add(n, &cred->subscribers);
13002 -#endif
13003 -}
13004 -
13005  /*
13006   * The RCU callback to actually dispose of a set of credentials
13007   */
13008 @@ -240,21 +215,16 @@ error:
13009   *
13010   * Call commit_creds() or abort_creds() to clean up.
13011   */
13012 -struct cred *prepare_creds(void)
13013 +struct cred *__prepare_creds(const struct cred *old)
13014  {
13015 -       struct task_struct *task = current;
13016 -       const struct cred *old;
13017         struct cred *new;
13018
13019 -       validate_process_creds();
13020 -
13021         new = kmem_cache_alloc(cred_jar, GFP_KERNEL);
13022         if (!new)
13023                 return NULL;
13024
13025         kdebug("prepare_creds() alloc %p", new);
13026
13027 -       old = task->cred;
13028         memcpy(new, old, sizeof(struct cred));
13029
13030         atomic_set(&new->usage, 1);
13031 @@ -283,6 +253,13 @@ error:
13032         abort_creds(new);
13033         return NULL;
13034  }
13035 +
13036 +struct cred *prepare_creds(void)
13037 +{
13038 +       validate_process_creds();
13039 +
13040 +       return __prepare_creds(current->cred);
13041 +}
13042  EXPORT_SYMBOL(prepare_creds);
13043
13044  /*
13045 diff -NurpP --minimal linux-4.4.111/kernel/exit.c linux-4.4.111-vs2.3.9.5/kernel/exit.c
13046 --- linux-4.4.111/kernel/exit.c 2018-01-11 07:57:51.000000000 +0000
13047 +++ linux-4.4.111-vs2.3.9.5/kernel/exit.c       2018-01-09 16:59:03.000000000 +0000
13048 @@ -48,6 +48,10 @@
13049  #include <linux/fs_struct.h>
13050  #include <linux/init_task.h>
13051  #include <linux/perf_event.h>
13052 +#include <linux/vs_limit.h>
13053 +#include <linux/vs_context.h>
13054 +#include <linux/vs_network.h>
13055 +#include <linux/vs_pid.h>
13056  #include <trace/events/sched.h>
13057  #include <linux/hw_breakpoint.h>
13058  #include <linux/oom.h>
13059 @@ -456,14 +460,24 @@ static struct task_struct *find_child_re
13060  {
13061         struct pid_namespace *pid_ns = task_active_pid_ns(father);
13062         struct task_struct *reaper = pid_ns->child_reaper;
13063 +       struct vx_info *vxi = task_get_vx_info(father);
13064 +
13065 +       if (vxi) {
13066 +               BUG_ON(!vxi->vx_reaper);
13067 +               if (vxi->vx_reaper != init_pid_ns.child_reaper &&
13068 +                   vxi->vx_reaper != father) {
13069 +                       reaper = vxi->vx_reaper;
13070 +                       goto out_put;
13071 +               }
13072 +       }
13073
13074         if (likely(reaper != father))
13075 -               return reaper;
13076 +               goto out_put;
13077
13078         reaper = find_alive_thread(father);
13079         if (reaper) {
13080                 pid_ns->child_reaper = reaper;
13081 -               return reaper;
13082 +               goto out_put;
13083         }
13084
13085         write_unlock_irq(&tasklist_lock);
13086 @@ -474,7 +488,10 @@ static struct task_struct *find_child_re
13087         zap_pid_ns_processes(pid_ns);
13088         write_lock_irq(&tasklist_lock);
13089
13090 -       return father;
13091 +       reaper = father;
13092 +out_put:
13093 +       put_vx_info(vxi);
13094 +       return reaper;
13095  }
13096
13097  /*
13098 @@ -562,9 +579,13 @@ static void forget_original_parent(struc
13099                 return;
13100
13101         reaper = find_new_reaper(father, reaper);
13102 -       list_for_each_entry(p, &father->children, sibling) {
13103 +       for (p = list_first_entry(&father->children, struct task_struct, sibling);
13104 +            &p->sibling != &father->children; ) {
13105 +               struct task_struct *next, *this_reaper = reaper;
13106 +               if (p == reaper)
13107 +                       this_reaper = task_active_pid_ns(reaper)->child_reaper;
13108                 for_each_thread(p, t) {
13109 -                       t->real_parent = reaper;
13110 +                       t->real_parent = this_reaper;
13111                         BUG_ON((!t->ptrace) != (t->parent == father));
13112                         if (likely(!t->ptrace))
13113                                 t->parent = t->real_parent;
13114 @@ -576,10 +597,13 @@ static void forget_original_parent(struc
13115                  * If this is a threaded reparent there is no need to
13116                  * notify anyone anything has happened.
13117                  */
13118 -               if (!same_thread_group(reaper, father))
13119 +               if (!same_thread_group(this_reaper, father))
13120                         reparent_leader(father, p, dead);
13121 +               next = list_next_entry(p, sibling);
13122 +               list_add(&p->sibling, &this_reaper->children);
13123 +               p = next;
13124         }
13125 -       list_splice_tail_init(&father->children, &reaper->children);
13126 +       INIT_LIST_HEAD(&father->children);
13127  }
13128
13129  /*
13130 @@ -763,6 +787,9 @@ void do_exit(long code)
13131          */
13132         flush_ptrace_hw_breakpoint(tsk);
13133
13134 +       /* needs to stay before exit_notify() */
13135 +       exit_vx_info_early(tsk, code);
13136 +
13137         TASKS_RCU(preempt_disable());
13138         TASKS_RCU(tasks_rcu_i = __srcu_read_lock(&tasks_rcu_exit_srcu));
13139         TASKS_RCU(preempt_enable());
13140 @@ -822,10 +849,15 @@ void do_exit(long code)
13141         smp_mb();
13142         raw_spin_unlock_wait(&tsk->pi_lock);
13143
13144 +       /* needs to stay after exit_notify() */
13145 +       exit_vx_info(tsk, code);
13146 +       exit_nx_info(tsk);
13147 +
13148         /* causes final put_task_struct in finish_task_switch(). */
13149         tsk->state = TASK_DEAD;
13150         tsk->flags |= PF_NOFREEZE;      /* tell freezer to ignore us */
13151         schedule();
13152 +       printk("bad task: %p [%lx]\n", current, current->state);
13153         BUG();
13154         /* Avoid "noreturn function does return".  */
13155         for (;;)
13156 diff -NurpP --minimal linux-4.4.111/kernel/fork.c linux-4.4.111-vs2.3.9.5/kernel/fork.c
13157 --- linux-4.4.111/kernel/fork.c 2018-01-11 07:57:51.000000000 +0000
13158 +++ linux-4.4.111-vs2.3.9.5/kernel/fork.c       2018-01-09 17:00:00.000000000 +0000
13159 @@ -76,6 +76,9 @@
13160  #include <linux/aio.h>
13161  #include <linux/compiler.h>
13162  #include <linux/sysctl.h>
13163 +#include <linux/vs_context.h>
13164 +#include <linux/vs_network.h>
13165 +#include <linux/vs_limit.h>
13166
13167  #include <asm/pgtable.h>
13168  #include <asm/pgalloc.h>
13169 @@ -227,6 +230,8 @@ void free_task(struct task_struct *tsk)
13170         arch_release_thread_info(tsk->stack);
13171         free_thread_info(tsk->stack);
13172         rt_mutex_debug_task_free(tsk);
13173 +       clr_vx_info(&tsk->vx_info);
13174 +       clr_nx_info(&tsk->nx_info);
13175         ftrace_graph_exit_task(tsk);
13176         put_seccomp_filter(tsk);
13177         arch_release_task_struct(tsk);
13178 @@ -1282,6 +1287,8 @@ static struct task_struct *copy_process(
13179  {
13180         int retval;
13181         struct task_struct *p;
13182 +       struct vx_info *vxi;
13183 +       struct nx_info *nxi;
13184         void *cgrp_ss_priv[CGROUP_CANFORK_COUNT] = {};
13185
13186         if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))
13187 @@ -1343,7 +1350,12 @@ static struct task_struct *copy_process(
13188         DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
13189         DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
13190  #endif
13191 +       init_vx_info(&p->vx_info, current_vx_info());
13192 +       init_nx_info(&p->nx_info, current_nx_info());
13193 +
13194         retval = -EAGAIN;
13195 +       if (!vx_nproc_avail(1))
13196 +               goto bad_fork_free;
13197         if (atomic_read(&p->real_cred->user->processes) >=
13198                         task_rlimit(p, RLIMIT_NPROC)) {
13199                 if (p->real_cred->user != INIT_USER &&
13200 @@ -1640,6 +1652,18 @@ static struct task_struct *copy_process(
13201         total_forks++;
13202         spin_unlock(&current->sighand->siglock);
13203         syscall_tracepoint_update(p);
13204 +
13205 +       /* p is copy of current */
13206 +       vxi = p->vx_info;
13207 +       if (vxi) {
13208 +               claim_vx_info(vxi, p);
13209 +               atomic_inc(&vxi->cvirt.nr_threads);
13210 +               atomic_inc(&vxi->cvirt.total_forks);
13211 +               vx_nproc_inc(p);
13212 +       }
13213 +       nxi = p->nx_info;
13214 +       if (nxi)
13215 +               claim_nx_info(nxi, p);
13216         write_unlock_irq(&tasklist_lock);
13217
13218         proc_fork_connector(p);
13219 diff -NurpP --minimal linux-4.4.111/kernel/kthread.c linux-4.4.111-vs2.3.9.5/kernel/kthread.c
13220 --- linux-4.4.111/kernel/kthread.c      2018-01-11 07:57:52.000000000 +0000
13221 +++ linux-4.4.111-vs2.3.9.5/kernel/kthread.c    2018-01-09 17:01:06.000000000 +0000
13222 @@ -19,6 +19,7 @@
13223  #include <linux/ptrace.h>
13224  #include <linux/uaccess.h>
13225  #include <linux/cgroup.h>
13226 +#include <linux/vs_pid.h>
13227  #include <trace/events/sched.h>
13228
13229  static DEFINE_SPINLOCK(kthread_create_lock);
13230 diff -NurpP --minimal linux-4.4.111/kernel/nsproxy.c linux-4.4.111-vs2.3.9.5/kernel/nsproxy.c
13231 --- linux-4.4.111/kernel/nsproxy.c      2015-04-12 22:12:50.000000000 +0000
13232 +++ linux-4.4.111-vs2.3.9.5/kernel/nsproxy.c    2018-01-09 16:36:33.000000000 +0000
13233 @@ -20,11 +20,14 @@
13234  #include <linux/mnt_namespace.h>
13235  #include <linux/utsname.h>
13236  #include <linux/pid_namespace.h>
13237 +#include <linux/vserver/global.h>
13238 +#include <linux/vserver/debug.h>
13239  #include <net/net_namespace.h>
13240  #include <linux/ipc_namespace.h>
13241  #include <linux/proc_ns.h>
13242  #include <linux/file.h>
13243  #include <linux/syscalls.h>
13244 +#include "../fs/mount.h"
13245
13246  static struct kmem_cache *nsproxy_cachep;
13247
13248 @@ -46,8 +49,11 @@ static inline struct nsproxy *create_nsp
13249         struct nsproxy *nsproxy;
13250
13251         nsproxy = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL);
13252 -       if (nsproxy)
13253 +       if (nsproxy) {
13254                 atomic_set(&nsproxy->count, 1);
13255 +               atomic_inc(&vs_global_nsproxy);
13256 +       }
13257 +       vxdprintk(VXD_CBIT(space, 2), "create_nsproxy = %p[1]", nsproxy);
13258         return nsproxy;
13259  }
13260
13261 @@ -56,9 +62,12 @@ static inline struct nsproxy *create_nsp
13262   * Return the newly created nsproxy.  Do not attach this to the task,
13263   * leave it to the caller to do proper locking and attach it to task.
13264   */
13265 -static struct nsproxy *create_new_namespaces(unsigned long flags,
13266 -       struct task_struct *tsk, struct user_namespace *user_ns,
13267 -       struct fs_struct *new_fs)
13268 +static struct nsproxy *unshare_namespaces(
13269 +       unsigned long flags,
13270 +       struct nsproxy *orig,
13271 +       struct fs_struct *new_fs,
13272 +       struct user_namespace *new_user,
13273 +       struct pid_namespace *new_pid)
13274  {
13275         struct nsproxy *new_nsp;
13276         int err;
13277 @@ -67,32 +76,31 @@ static struct nsproxy *create_new_namesp
13278         if (!new_nsp)
13279                 return ERR_PTR(-ENOMEM);
13280
13281 -       new_nsp->mnt_ns = copy_mnt_ns(flags, tsk->nsproxy->mnt_ns, user_ns, new_fs);
13282 +       new_nsp->mnt_ns = copy_mnt_ns(flags, orig->mnt_ns, new_user, new_fs);
13283         if (IS_ERR(new_nsp->mnt_ns)) {
13284                 err = PTR_ERR(new_nsp->mnt_ns);
13285                 goto out_ns;
13286         }
13287
13288 -       new_nsp->uts_ns = copy_utsname(flags, user_ns, tsk->nsproxy->uts_ns);
13289 +       new_nsp->uts_ns = copy_utsname(flags, new_user, orig->uts_ns);
13290         if (IS_ERR(new_nsp->uts_ns)) {
13291                 err = PTR_ERR(new_nsp->uts_ns);
13292                 goto out_uts;
13293         }
13294
13295 -       new_nsp->ipc_ns = copy_ipcs(flags, user_ns, tsk->nsproxy->ipc_ns);
13296 +       new_nsp->ipc_ns = copy_ipcs(flags, new_user, orig->ipc_ns);
13297         if (IS_ERR(new_nsp->ipc_ns)) {
13298                 err = PTR_ERR(new_nsp->ipc_ns);
13299                 goto out_ipc;
13300         }
13301
13302 -       new_nsp->pid_ns_for_children =
13303 -               copy_pid_ns(flags, user_ns, tsk->nsproxy->pid_ns_for_children);
13304 +       new_nsp->pid_ns_for_children = copy_pid_ns(flags, new_user, new_pid);
13305         if (IS_ERR(new_nsp->pid_ns_for_children)) {
13306                 err = PTR_ERR(new_nsp->pid_ns_for_children);
13307                 goto out_pid;
13308         }
13309
13310 -       new_nsp->net_ns = copy_net_ns(flags, user_ns, tsk->nsproxy->net_ns);
13311 +       new_nsp->net_ns = copy_net_ns(flags, new_user, orig->net_ns);
13312         if (IS_ERR(new_nsp->net_ns)) {
13313                 err = PTR_ERR(new_nsp->net_ns);
13314                 goto out_net;
13315 @@ -117,6 +125,41 @@ out_ns:
13316         return ERR_PTR(err);
13317  }
13318
13319 +static struct nsproxy *create_new_namespaces(unsigned long flags,
13320 +       struct task_struct *tsk, struct user_namespace *user_ns,
13321 +       struct fs_struct *new_fs)
13322 +
13323 +{
13324 +       return unshare_namespaces(flags, tsk->nsproxy,
13325 +               new_fs, user_ns, task_active_pid_ns(tsk));
13326 +}
13327 +
13328 +/*
13329 + * copies the nsproxy, setting refcount to 1, and grabbing a
13330 + * reference to all contained namespaces.
13331 + */
13332 +struct nsproxy *copy_nsproxy(struct nsproxy *orig)
13333 +{
13334 +       struct nsproxy *ns = create_nsproxy();
13335 +
13336 +       if (ns) {
13337 +               memcpy(ns, orig, sizeof(struct nsproxy));
13338 +               atomic_set(&ns->count, 1);
13339 +
13340 +               if (ns->mnt_ns)
13341 +                       get_mnt_ns(ns->mnt_ns);
13342 +               if (ns->uts_ns)
13343 +                       get_uts_ns(ns->uts_ns);
13344 +               if (ns->ipc_ns)
13345 +                       get_ipc_ns(ns->ipc_ns);
13346 +               if (ns->pid_ns_for_children)
13347 +                       get_pid_ns(ns->pid_ns_for_children);
13348 +               if (ns->net_ns)
13349 +                       get_net(ns->net_ns);
13350 +       }
13351 +       return ns;
13352 +}
13353 +
13354  /*
13355   * called from clone.  This now handles copy for nsproxy and all
13356   * namespaces therein.
13357 @@ -125,7 +168,10 @@ int copy_namespaces(unsigned long flags,
13358  {
13359         struct nsproxy *old_ns = tsk->nsproxy;
13360         struct user_namespace *user_ns = task_cred_xxx(tsk, user_ns);
13361 -       struct nsproxy *new_ns;
13362 +       struct nsproxy *new_ns = NULL;
13363 +
13364 +       vxdprintk(VXD_CBIT(space, 7), "copy_namespaces(0x%08lx,%p[%p])",
13365 +               flags, tsk, old_ns);
13366
13367         if (likely(!(flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
13368                               CLONE_NEWPID | CLONE_NEWNET)))) {
13369 @@ -133,7 +179,7 @@ int copy_namespaces(unsigned long flags,
13370                 return 0;
13371         }
13372
13373 -       if (!ns_capable(user_ns, CAP_SYS_ADMIN))
13374 +       if (!vx_ns_can_unshare(user_ns, CAP_SYS_ADMIN, flags))
13375                 return -EPERM;
13376
13377         /*
13378 @@ -152,6 +198,9 @@ int copy_namespaces(unsigned long flags,
13379                 return  PTR_ERR(new_ns);
13380
13381         tsk->nsproxy = new_ns;
13382 +       vxdprintk(VXD_CBIT(space, 3),
13383 +               "copy_namespaces(0x%08lx,%p[%p]) = [%p]",
13384 +               flags, tsk, old_ns, new_ns);
13385         return 0;
13386  }
13387
13388 @@ -165,7 +214,9 @@ void free_nsproxy(struct nsproxy *ns)
13389                 put_ipc_ns(ns->ipc_ns);
13390         if (ns->pid_ns_for_children)
13391                 put_pid_ns(ns->pid_ns_for_children);
13392 -       put_net(ns->net_ns);
13393 +       if (ns->net_ns)
13394 +               put_net(ns->net_ns);
13395 +       atomic_dec(&vs_global_nsproxy);
13396         kmem_cache_free(nsproxy_cachep, ns);
13397  }
13398
13399 @@ -179,12 +230,16 @@ int unshare_nsproxy_namespaces(unsigned
13400         struct user_namespace *user_ns;
13401         int err = 0;
13402
13403 +       vxdprintk(VXD_CBIT(space, 4),
13404 +               "unshare_nsproxy_namespaces(0x%08lx,[%p])",
13405 +               unshare_flags, current->nsproxy);
13406 +
13407         if (!(unshare_flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
13408                                CLONE_NEWNET | CLONE_NEWPID)))
13409                 return 0;
13410
13411         user_ns = new_cred ? new_cred->user_ns : current_user_ns();
13412 -       if (!ns_capable(user_ns, CAP_SYS_ADMIN))
13413 +       if (!vx_ns_can_unshare(user_ns, CAP_SYS_ADMIN, unshare_flags))
13414                 return -EPERM;
13415
13416         *new_nsp = create_new_namespaces(unshare_flags, current, user_ns,
13417 diff -NurpP --minimal linux-4.4.111/kernel/pid.c linux-4.4.111-vs2.3.9.5/kernel/pid.c
13418 --- linux-4.4.111/kernel/pid.c  2018-01-11 07:57:52.000000000 +0000
13419 +++ linux-4.4.111-vs2.3.9.5/kernel/pid.c        2018-01-09 21:54:23.000000000 +0000
13420 @@ -38,6 +38,7 @@
13421  #include <linux/syscalls.h>
13422  #include <linux/proc_ns.h>
13423  #include <linux/proc_fs.h>
13424 +#include <linux/vs_pid.h>
13425
13426  #define pid_hashfn(nr, ns)     \
13427         hash_long((unsigned long)nr + (unsigned long)ns, pidhash_shift)
13428 @@ -379,7 +380,7 @@ EXPORT_SYMBOL_GPL(find_pid_ns);
13429
13430  struct pid *find_vpid(int nr)
13431  {
13432 -       return find_pid_ns(nr, task_active_pid_ns(current));
13433 +       return find_pid_ns(vx_rmap_pid(nr), task_active_pid_ns(current));
13434  }
13435  EXPORT_SYMBOL_GPL(find_vpid);
13436
13437 @@ -435,6 +436,9 @@ void transfer_pid(struct task_struct *ol
13438  struct task_struct *pid_task(struct pid *pid, enum pid_type type)
13439  {
13440         struct task_struct *result = NULL;
13441 +
13442 +       if (type == __PIDTYPE_REALPID)
13443 +               type = PIDTYPE_PID;
13444         if (pid) {
13445                 struct hlist_node *first;
13446                 first = rcu_dereference_check(hlist_first_rcu(&pid->tasks[type]),
13447 @@ -453,7 +457,7 @@ struct task_struct *find_task_by_pid_ns(
13448  {
13449         RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
13450                          "find_task_by_pid_ns() needs rcu_read_lock() protection");
13451 -       return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);
13452 +       return pid_task(find_pid_ns(vx_rmap_pid(nr), ns), PIDTYPE_PID);
13453  }
13454
13455  struct task_struct *find_task_by_vpid(pid_t vnr)
13456 @@ -497,7 +501,7 @@ struct pid *find_get_pid(pid_t nr)
13457  }
13458  EXPORT_SYMBOL_GPL(find_get_pid);
13459
13460 -pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)
13461 +pid_t pid_unmapped_nr_ns(struct pid *pid, struct pid_namespace *ns)
13462  {
13463         struct upid *upid;
13464         pid_t nr = 0;
13465 @@ -511,6 +515,11 @@ pid_t pid_nr_ns(struct pid *pid, struct
13466  }
13467  EXPORT_SYMBOL_GPL(pid_nr_ns);
13468
13469 +pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)
13470 +{
13471 +       return vx_map_pid(pid_unmapped_nr_ns(pid, ns));
13472 +}
13473 +
13474  pid_t pid_vnr(struct pid *pid)
13475  {
13476         return pid_nr_ns(pid, task_active_pid_ns(current));
13477 diff -NurpP --minimal linux-4.4.111/kernel/pid_namespace.c linux-4.4.111-vs2.3.9.5/kernel/pid_namespace.c
13478 --- linux-4.4.111/kernel/pid_namespace.c        2018-01-11 07:57:52.000000000 +0000
13479 +++ linux-4.4.111-vs2.3.9.5/kernel/pid_namespace.c      2018-01-09 16:36:33.000000000 +0000
13480 @@ -18,6 +18,7 @@
13481  #include <linux/proc_ns.h>
13482  #include <linux/reboot.h>
13483  #include <linux/export.h>
13484 +#include <linux/vserver/global.h>
13485
13486  struct pid_cache {
13487         int nr_ids;
13488 @@ -111,6 +112,7 @@ static struct pid_namespace *create_pid_
13489         ns->ns.ops = &pidns_operations;
13490
13491         kref_init(&ns->kref);
13492 +       atomic_inc(&vs_global_pid_ns);
13493         ns->level = level;
13494         ns->parent = get_pid_ns(parent_pid_ns);
13495         ns->user_ns = get_user_ns(user_ns);
13496 @@ -128,6 +130,7 @@ static struct pid_namespace *create_pid_
13497  out_free_map:
13498         kfree(ns->pidmap[0].page);
13499  out_free:
13500 +       atomic_dec(&vs_global_pid_ns);
13501         kmem_cache_free(pid_ns_cachep, ns);
13502  out:
13503         return ERR_PTR(err);
13504 diff -NurpP --minimal linux-4.4.111/kernel/printk/printk.c linux-4.4.111-vs2.3.9.5/kernel/printk/printk.c
13505 --- linux-4.4.111/kernel/printk/printk.c        2018-01-11 07:57:52.000000000 +0000
13506 +++ linux-4.4.111-vs2.3.9.5/kernel/printk/printk.c      2018-01-09 16:36:33.000000000 +0000
13507 @@ -46,6 +46,7 @@
13508  #include <linux/utsname.h>
13509  #include <linux/ctype.h>
13510  #include <linux/uio.h>
13511 +#include <linux/vs_cvirt.h>
13512
13513  #include <asm/uaccess.h>
13514
13515 @@ -502,7 +503,7 @@ int check_syslog_permissions(int type, i
13516                 goto ok;
13517
13518         if (syslog_action_restricted(type)) {
13519 -               if (capable(CAP_SYSLOG))
13520 +               if (vx_capable(CAP_SYSLOG, VXC_SYSLOG))
13521                         goto ok;
13522                 /*
13523                  * For historical reasons, accept CAP_SYS_ADMIN too, with
13524 @@ -1304,12 +1305,9 @@ int do_syslog(int type, char __user *buf
13525         if (error)
13526                 goto out;
13527
13528 -       switch (type) {
13529 -       case SYSLOG_ACTION_CLOSE:       /* Close log */
13530 -               break;
13531 -       case SYSLOG_ACTION_OPEN:        /* Open log */
13532 -               break;
13533 -       case SYSLOG_ACTION_READ:        /* Read from log */
13534 +       if ((type == SYSLOG_ACTION_READ) ||
13535 +           (type == SYSLOG_ACTION_READ_ALL) ||
13536 +           (type == SYSLOG_ACTION_READ_CLEAR)) {
13537                 error = -EINVAL;
13538                 if (!buf || len < 0)
13539                         goto out;
13540 @@ -1320,6 +1318,16 @@ int do_syslog(int type, char __user *buf
13541                         error = -EFAULT;
13542                         goto out;
13543                 }
13544 +       }
13545 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
13546 +               return vx_do_syslog(type, buf, len);
13547 +
13548 +       switch (type) {
13549 +       case SYSLOG_ACTION_CLOSE:       /* Close log */
13550 +               break;
13551 +       case SYSLOG_ACTION_OPEN:        /* Open log */
13552 +               break;
13553 +       case SYSLOG_ACTION_READ:        /* Read from log */
13554                 error = wait_event_interruptible(log_wait,
13555                                                  syslog_seq != log_next_seq);
13556                 if (error)
13557 @@ -1332,16 +1340,6 @@ int do_syslog(int type, char __user *buf
13558                 /* FALL THRU */
13559         /* Read last kernel messages */
13560         case SYSLOG_ACTION_READ_ALL:
13561 -               error = -EINVAL;
13562 -               if (!buf || len < 0)
13563 -                       goto out;
13564 -               error = 0;
13565 -               if (!len)
13566 -                       goto out;
13567 -               if (!access_ok(VERIFY_WRITE, buf, len)) {
13568 -                       error = -EFAULT;
13569 -                       goto out;
13570 -               }
13571                 error = syslog_print_all(buf, len, clear);
13572                 break;
13573         /* Clear ring buffer */
13574 diff -NurpP --minimal linux-4.4.111/kernel/ptrace.c linux-4.4.111-vs2.3.9.5/kernel/ptrace.c
13575 --- linux-4.4.111/kernel/ptrace.c       2018-01-11 07:57:52.000000000 +0000
13576 +++ linux-4.4.111-vs2.3.9.5/kernel/ptrace.c     2018-01-09 16:36:33.000000000 +0000
13577 @@ -23,6 +23,7 @@
13578  #include <linux/syscalls.h>
13579  #include <linux/uaccess.h>
13580  #include <linux/regset.h>
13581 +#include <linux/vs_context.h>
13582  #include <linux/hw_breakpoint.h>
13583  #include <linux/cn_proc.h>
13584  #include <linux/compat.h>
13585 @@ -295,6 +296,11 @@ ok:
13586              !ptrace_has_cap(mm->user_ns, mode)))
13587             return -EPERM;
13588
13589 +       if (!vx_check(task->xid, VS_ADMIN_P|VS_WATCH_P|VS_IDENT))
13590 +               return -EPERM;
13591 +       if (!vx_check(task->xid, VS_IDENT) &&
13592 +               !task_vx_flags(task, VXF_STATE_ADMIN, 0))
13593 +               return -EACCES;
13594         return security_ptrace_access_check(task, mode);
13595  }
13596
13597 diff -NurpP --minimal linux-4.4.111/kernel/reboot.c linux-4.4.111-vs2.3.9.5/kernel/reboot.c
13598 --- linux-4.4.111/kernel/reboot.c       2016-07-05 04:12:39.000000000 +0000
13599 +++ linux-4.4.111-vs2.3.9.5/kernel/reboot.c     2018-01-09 16:36:33.000000000 +0000
13600 @@ -16,6 +16,7 @@
13601  #include <linux/syscalls.h>
13602  #include <linux/syscore_ops.h>
13603  #include <linux/uaccess.h>
13604 +#include <linux/vs_pid.h>
13605
13606  /*
13607   * this indicates whether you can reboot with ctrl-alt-del: the default is yes
13608 @@ -269,6 +270,8 @@ EXPORT_SYMBOL_GPL(kernel_power_off);
13609
13610  static DEFINE_MUTEX(reboot_mutex);
13611
13612 +long vs_reboot(unsigned int, void __user *);
13613 +
13614  /*
13615   * Reboot system call: for obvious reasons only root may call it,
13616   * and even root needs to set up some magic numbers in the registers
13617 @@ -311,6 +314,9 @@ SYSCALL_DEFINE4(reboot, int, magic1, int
13618         if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !pm_power_off)
13619                 cmd = LINUX_REBOOT_CMD_HALT;
13620
13621 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
13622 +               return vs_reboot(cmd, arg);
13623 +
13624         mutex_lock(&reboot_mutex);
13625         switch (cmd) {
13626         case LINUX_REBOOT_CMD_RESTART:
13627 diff -NurpP --minimal linux-4.4.111/kernel/sched/core.c linux-4.4.111-vs2.3.9.5/kernel/sched/core.c
13628 --- linux-4.4.111/kernel/sched/core.c   2018-01-11 07:57:52.000000000 +0000
13629 +++ linux-4.4.111-vs2.3.9.5/kernel/sched/core.c 2018-01-09 16:36:33.000000000 +0000
13630 @@ -74,6 +74,8 @@
13631  #include <linux/binfmts.h>
13632  #include <linux/context_tracking.h>
13633  #include <linux/compiler.h>
13634 +#include <linux/vs_sched.h>
13635 +#include <linux/vs_cvirt.h>
13636
13637  #include <asm/switch_to.h>
13638  #include <asm/tlb.h>
13639 @@ -3558,7 +3560,7 @@ SYSCALL_DEFINE1(nice, int, increment)
13640
13641         nice = clamp_val(nice, MIN_NICE, MAX_NICE);
13642         if (increment < 0 && !can_nice(current, nice))
13643 -               return -EPERM;
13644 +               return vx_flags(VXF_IGNEG_NICE, 0) ? 0 : -EPERM;
13645
13646         retval = security_task_setnice(current, nice);
13647         if (retval)
13648 diff -NurpP --minimal linux-4.4.111/kernel/sched/cputime.c linux-4.4.111-vs2.3.9.5/kernel/sched/cputime.c
13649 --- linux-4.4.111/kernel/sched/cputime.c        2018-01-11 07:57:52.000000000 +0000
13650 +++ linux-4.4.111-vs2.3.9.5/kernel/sched/cputime.c      2018-01-09 16:36:33.000000000 +0000
13651 @@ -4,6 +4,7 @@
13652  #include <linux/kernel_stat.h>
13653  #include <linux/static_key.h>
13654  #include <linux/context_tracking.h>
13655 +#include <linux/vs_sched.h>
13656  #include "sched.h"
13657
13658
13659 @@ -135,14 +136,17 @@ static inline void task_group_account_fi
13660  void account_user_time(struct task_struct *p, cputime_t cputime,
13661                        cputime_t cputime_scaled)
13662  {
13663 +       struct vx_info *vxi = p->vx_info;  /* p is _always_ current */
13664 +       int nice = (task_nice(p) > 0);
13665         int index;
13666
13667         /* Add user time to process. */
13668         p->utime += cputime;
13669         p->utimescaled += cputime_scaled;
13670 +       vx_account_user(vxi, cputime, nice);
13671         account_group_user_time(p, cputime);
13672
13673 -       index = (task_nice(p) > 0) ? CPUTIME_NICE : CPUTIME_USER;
13674 +       index = (nice) ? CPUTIME_NICE : CPUTIME_USER;
13675
13676         /* Add user time to cpustat. */
13677         task_group_account_field(p, index, (__force u64) cputime);
13678 @@ -189,9 +193,12 @@ static inline
13679  void __account_system_time(struct task_struct *p, cputime_t cputime,
13680                         cputime_t cputime_scaled, int index)
13681  {
13682 +       struct vx_info *vxi = p->vx_info;  /* p is _always_ current */
13683 +
13684         /* Add system time to process. */
13685         p->stime += cputime;
13686         p->stimescaled += cputime_scaled;
13687 +       vx_account_system(vxi, cputime, 0 /* do we have idle time? */);
13688         account_group_system_time(p, cputime);
13689
13690         /* Add system time to cpustat. */
13691 diff -NurpP --minimal linux-4.4.111/kernel/sched/fair.c linux-4.4.111-vs2.3.9.5/kernel/sched/fair.c
13692 --- linux-4.4.111/kernel/sched/fair.c   2018-01-11 07:57:52.000000000 +0000
13693 +++ linux-4.4.111-vs2.3.9.5/kernel/sched/fair.c 2018-01-09 16:36:33.000000000 +0000
13694 @@ -30,6 +30,7 @@
13695  #include <linux/mempolicy.h>
13696  #include <linux/migrate.h>
13697  #include <linux/task_work.h>
13698 +#include <linux/vs_cvirt.h>
13699
13700  #include <trace/events/sched.h>
13701
13702 @@ -3055,6 +3056,8 @@ enqueue_entity(struct cfs_rq *cfs_rq, st
13703                 __enqueue_entity(cfs_rq, se);
13704         se->on_rq = 1;
13705
13706 +       if (entity_is_task(se))
13707 +               vx_activate_task(task_of(se));
13708         if (cfs_rq->nr_running == 1) {
13709                 list_add_leaf_cfs_rq(cfs_rq);
13710                 check_enqueue_throttle(cfs_rq);
13711 @@ -3136,6 +3139,8 @@ dequeue_entity(struct cfs_rq *cfs_rq, st
13712         if (se != cfs_rq->curr)
13713                 __dequeue_entity(cfs_rq, se);
13714         se->on_rq = 0;
13715 +       if (entity_is_task(se))
13716 +               vx_deactivate_task(task_of(se));
13717         account_entity_dequeue(cfs_rq, se);
13718
13719         /*
13720 diff -NurpP --minimal linux-4.4.111/kernel/signal.c linux-4.4.111-vs2.3.9.5/kernel/signal.c
13721 --- linux-4.4.111/kernel/signal.c       2018-01-11 07:57:52.000000000 +0000
13722 +++ linux-4.4.111-vs2.3.9.5/kernel/signal.c     2018-01-11 08:03:00.000000000 +0000
13723 @@ -34,6 +34,8 @@
13724  #include <linux/compat.h>
13725  #include <linux/cn_proc.h>
13726  #include <linux/compiler.h>
13727 +#include <linux/vs_context.h>
13728 +#include <linux/vs_pid.h>
13729
13730  #define CREATE_TRACE_POINTS
13731  #include <trace/events/signal.h>
13732 @@ -726,9 +728,18 @@ static int check_kill_permission(int sig
13733         struct pid *sid;
13734         int error;
13735
13736 +       vxdprintk(VXD_CBIT(misc, 7),
13737 +               "check_kill_permission(%d,%p,%p[#%u,%u])",
13738 +               sig, info, t, vx_task_xid(t), t->pid);
13739 +
13740         if (!valid_signal(sig))
13741                 return -EINVAL;
13742
13743 +/*     FIXME: needed? if so, why?
13744 +       if ((info != SEND_SIG_NOINFO) &&
13745 +               (is_si_special(info) || !si_fromuser(info)))
13746 +               goto skip;      */
13747 +
13748         if (!si_fromuser(info))
13749                 return 0;
13750
13751 @@ -752,6 +763,20 @@ static int check_kill_permission(int sig
13752                 }
13753         }
13754
13755 +       error = -EPERM;
13756 +       if (t->pid == 1 && current->xid)
13757 +               return error;
13758 +
13759 +       error = -ESRCH;
13760 +       /* FIXME: we shouldn't return ESRCH ever, to avoid
13761 +                 loops, maybe ENOENT or EACCES? */
13762 +       if (!vx_check(vx_task_xid(t), VS_WATCH_P | VS_IDENT)) {
13763 +               vxdprintk(current->xid || VXD_CBIT(misc, 7),
13764 +                       "signal %d[%p] xid mismatch %p[#%u,%u] xid=#%u",
13765 +                       sig, info, t, vx_task_xid(t), t->pid, current->xid);
13766 +               return error;
13767 +       }
13768 +/* skip: */
13769         return security_task_kill(t, info, sig, 0);
13770  }
13771
13772 @@ -1303,8 +1328,14 @@ int kill_pid_info(int sig, struct siginf
13773         for (;;) {
13774                 rcu_read_lock();
13775                 p = pid_task(pid, PIDTYPE_PID);
13776 -               if (p)
13777 -                       error = group_send_sig_info(sig, info, p);
13778 +               if (p) {
13779 +                       if (vx_check(vx_task_xid(p), VS_IDENT))
13780 +                               error = group_send_sig_info(sig, info, p);
13781 +                       else {
13782 +                               rcu_read_unlock();
13783 +                               return -ESRCH;
13784 +                       }
13785 +               }
13786                 rcu_read_unlock();
13787                 if (likely(!p || error != -ESRCH))
13788                         return error;
13789 @@ -1349,7 +1380,7 @@ int kill_pid_info_as_cred(int sig, struc
13790
13791         rcu_read_lock();
13792         p = pid_task(pid, PIDTYPE_PID);
13793 -       if (!p) {
13794 +       if (!p || !vx_check(vx_task_xid(p), VS_IDENT)) {
13795                 ret = -ESRCH;
13796                 goto out_unlock;
13797         }
13798 @@ -1401,8 +1432,10 @@ static int kill_something_info(int sig,
13799                 struct task_struct * p;
13800
13801                 for_each_process(p) {
13802 -                       if (task_pid_vnr(p) > 1 &&
13803 -                                       !same_thread_group(p, current)) {
13804 +                       if (vx_check(vx_task_xid(p), VS_ADMIN|VS_IDENT) &&
13805 +                               task_pid_vnr(p) > 1 &&
13806 +                               !same_thread_group(p, current) &&
13807 +                               !vx_current_initpid(p->pid)) {
13808                                 int err = group_send_sig_info(sig, info, p);
13809                                 ++count;
13810                                 if (err != -EPERM)
13811 @@ -2255,6 +2288,11 @@ relock:
13812                                 !sig_kernel_only(signr))
13813                         continue;
13814
13815 +               /* virtual init is protected against user signals */
13816 +               if ((ksig->info.si_code == SI_USER) &&
13817 +                       vx_current_initpid(current->pid))
13818 +                       continue;
13819 +
13820                 if (sig_kernel_stop(signr)) {
13821                         /*
13822                          * The default action is to stop all threads in
13823 diff -NurpP --minimal linux-4.4.111/kernel/softirq.c linux-4.4.111-vs2.3.9.5/kernel/softirq.c
13824 --- linux-4.4.111/kernel/softirq.c      2015-04-12 22:12:50.000000000 +0000
13825 +++ linux-4.4.111-vs2.3.9.5/kernel/softirq.c    2018-01-09 16:36:34.000000000 +0000
13826 @@ -26,6 +26,7 @@
13827  #include <linux/smpboot.h>
13828  #include <linux/tick.h>
13829  #include <linux/irq.h>
13830 +#include <linux/vs_context.h>
13831
13832  #define CREATE_TRACE_POINTS
13833  #include <trace/events/irq.h>
13834 diff -NurpP --minimal linux-4.4.111/kernel/sys.c linux-4.4.111-vs2.3.9.5/kernel/sys.c
13835 --- linux-4.4.111/kernel/sys.c  2018-01-11 07:57:52.000000000 +0000
13836 +++ linux-4.4.111-vs2.3.9.5/kernel/sys.c        2018-01-09 17:00:36.000000000 +0000
13837 @@ -54,6 +54,7 @@
13838  #include <linux/cred.h>
13839
13840  #include <linux/kmsg_dump.h>
13841 +#include <linux/vs_pid.h>
13842  /* Move somewhere else to avoid recompiling? */
13843  #include <generated/utsrelease.h>
13844
13845 @@ -157,7 +158,10 @@ static int set_one_prio(struct task_stru
13846                 goto out;
13847         }
13848         if (niceval < task_nice(p) && !can_nice(p, niceval)) {
13849 -               error = -EACCES;
13850 +               if (vx_flags(VXF_IGNEG_NICE, 0))
13851 +                       error = 0;
13852 +               else
13853 +                       error = -EACCES;
13854                 goto out;
13855         }
13856         no_nice = security_task_setnice(p, niceval);
13857 @@ -208,6 +212,8 @@ SYSCALL_DEFINE3(setpriority, int, which,
13858                 else
13859                         pgrp = task_pgrp(current);
13860                 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
13861 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13862 +                               continue;
13863                         error = set_one_prio(p, niceval, error);
13864                 } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
13865                 break;
13866 @@ -274,6 +280,8 @@ SYSCALL_DEFINE2(getpriority, int, which,
13867                 else
13868                         pgrp = task_pgrp(current);
13869                 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
13870 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13871 +                               continue;
13872                         niceval = nice_to_rlimit(task_nice(p));
13873                         if (niceval > retval)
13874                                 retval = niceval;
13875 @@ -290,6 +298,8 @@ SYSCALL_DEFINE2(getpriority, int, which,
13876                                 goto out_unlock;        /* No processes for this user */
13877                 }
13878                 do_each_thread(g, p) {
13879 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13880 +                               continue;
13881                         if (uid_eq(task_uid(p), uid) && task_pid_vnr(p)) {
13882                                 niceval = nice_to_rlimit(task_nice(p));
13883                                 if (niceval > retval)
13884 @@ -1217,7 +1227,8 @@ SYSCALL_DEFINE2(sethostname, char __user
13885         int errno;
13886         char tmp[__NEW_UTS_LEN];
13887
13888 -       if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
13889 +       if (!vx_ns_capable(current->nsproxy->uts_ns->user_ns,
13890 +               CAP_SYS_ADMIN, VXC_SET_UTSNAME))
13891                 return -EPERM;
13892
13893         if (len < 0 || len > __NEW_UTS_LEN)
13894 @@ -1268,7 +1279,8 @@ SYSCALL_DEFINE2(setdomainname, char __us
13895         int errno;
13896         char tmp[__NEW_UTS_LEN];
13897
13898 -       if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
13899 +       if (!vx_ns_capable(current->nsproxy->uts_ns->user_ns,
13900 +               CAP_SYS_ADMIN, VXC_SET_UTSNAME))
13901                 return -EPERM;
13902         if (len < 0 || len > __NEW_UTS_LEN)
13903                 return -EINVAL;
13904 @@ -1386,7 +1398,7 @@ int do_prlimit(struct task_struct *tsk,
13905                 /* Keep the capable check against init_user_ns until
13906                    cgroups can contain all limits */
13907                 if (new_rlim->rlim_max > rlim->rlim_max &&
13908 -                               !capable(CAP_SYS_RESOURCE))
13909 +                       !vx_capable(CAP_SYS_RESOURCE, VXC_SET_RLIMIT))
13910                         retval = -EPERM;
13911                 if (!retval)
13912                         retval = security_task_setrlimit(tsk->group_leader,
13913 @@ -1439,7 +1451,8 @@ static int check_prlimit_permission(stru
13914             gid_eq(cred->gid, tcred->sgid) &&
13915             gid_eq(cred->gid, tcred->gid))
13916                 return 0;
13917 -       if (ns_capable(tcred->user_ns, CAP_SYS_RESOURCE))
13918 +       if (vx_ns_capable(tcred->user_ns,
13919 +               CAP_SYS_RESOURCE, VXC_SET_RLIMIT))
13920                 return 0;
13921
13922         return -EPERM;
13923 diff -NurpP --minimal linux-4.4.111/kernel/sysctl.c linux-4.4.111-vs2.3.9.5/kernel/sysctl.c
13924 --- linux-4.4.111/kernel/sysctl.c       2018-01-11 07:57:52.000000000 +0000
13925 +++ linux-4.4.111-vs2.3.9.5/kernel/sysctl.c     2018-01-09 16:36:34.000000000 +0000
13926 @@ -87,6 +87,7 @@
13927  #if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT)
13928  #include <linux/lockdep.h>
13929  #endif
13930 +extern char vshelper_path[];
13931  #ifdef CONFIG_CHR_DEV_SG
13932  #include <scsi/sg.h>
13933  #endif
13934 @@ -279,6 +280,13 @@ static int max_extfrag_threshold = 1000;
13935
13936  static struct ctl_table kern_table[] = {
13937         {
13938 +               .procname       = "vshelper",
13939 +               .data           = &vshelper_path,
13940 +               .maxlen         = 256,
13941 +               .mode           = 0644,
13942 +               .proc_handler   = proc_dostring,
13943 +       },
13944 +       {
13945                 .procname       = "sched_child_runs_first",
13946                 .data           = &sysctl_sched_child_runs_first,
13947                 .maxlen         = sizeof(unsigned int),
13948 @@ -1385,7 +1393,6 @@ static struct ctl_table vm_table[] = {
13949                 .extra1         = &zero,
13950                 .extra2         = &one,
13951         },
13952 -
13953  #endif /* CONFIG_COMPACTION */
13954         {
13955                 .procname       = "min_free_kbytes",
13956 diff -NurpP --minimal linux-4.4.111/kernel/sysctl_binary.c linux-4.4.111-vs2.3.9.5/kernel/sysctl_binary.c
13957 --- linux-4.4.111/kernel/sysctl_binary.c        2018-01-11 07:57:52.000000000 +0000
13958 +++ linux-4.4.111-vs2.3.9.5/kernel/sysctl_binary.c      2018-01-09 16:36:34.000000000 +0000
13959 @@ -73,6 +73,7 @@ static const struct bin_table bin_kern_t
13960
13961         { CTL_INT,      KERN_PANIC,                     "panic" },
13962         { CTL_INT,      KERN_REALROOTDEV,               "real-root-dev" },
13963 +       { CTL_STR,      KERN_VSHELPER,                  "vshelper" },
13964
13965         { CTL_STR,      KERN_SPARC_REBOOT,              "reboot-cmd" },
13966         { CTL_INT,      KERN_CTLALTDEL,                 "ctrl-alt-del" },
13967 diff -NurpP --minimal linux-4.4.111/kernel/time/posix-timers.c linux-4.4.111-vs2.3.9.5/kernel/time/posix-timers.c
13968 --- linux-4.4.111/kernel/time/posix-timers.c    2018-01-11 07:57:52.000000000 +0000
13969 +++ linux-4.4.111-vs2.3.9.5/kernel/time/posix-timers.c  2018-01-09 16:36:34.000000000 +0000
13970 @@ -48,6 +48,7 @@
13971  #include <linux/workqueue.h>
13972  #include <linux/export.h>
13973  #include <linux/hashtable.h>
13974 +#include <linux/vs_context.h>
13975
13976  #include "timekeeping.h"
13977
13978 @@ -407,6 +408,7 @@ int posix_timer_event(struct k_itimer *t
13979  {
13980         struct task_struct *task;
13981         int shared, ret = -1;
13982 +
13983         /*
13984          * FIXME: if ->sigq is queued we can race with
13985          * dequeue_signal()->do_schedule_next_timer().
13986 @@ -423,10 +425,18 @@ int posix_timer_event(struct k_itimer *t
13987         rcu_read_lock();
13988         task = pid_task(timr->it_pid, PIDTYPE_PID);
13989         if (task) {
13990 +               struct vx_info_save vxis;
13991 +               struct vx_info *vxi;
13992 +
13993 +               vxi = get_vx_info(task->vx_info);
13994 +               enter_vx_info(vxi, &vxis);
13995                 shared = !(timr->it_sigev_notify & SIGEV_THREAD_ID);
13996                 ret = send_sigqueue(timr->sigq, task, shared);
13997 +               leave_vx_info(&vxis);
13998 +               put_vx_info(vxi);
13999         }
14000         rcu_read_unlock();
14001 +
14002         /* If we failed to send the signal the timer stops. */
14003         return ret > 0;
14004  }
14005 diff -NurpP --minimal linux-4.4.111/kernel/time/time.c linux-4.4.111-vs2.3.9.5/kernel/time/time.c
14006 --- linux-4.4.111/kernel/time/time.c    2016-07-05 04:12:39.000000000 +0000
14007 +++ linux-4.4.111-vs2.3.9.5/kernel/time/time.c  2018-01-09 16:36:34.000000000 +0000
14008 @@ -37,6 +37,7 @@
14009  #include <linux/fs.h>
14010  #include <linux/math64.h>
14011  #include <linux/ptrace.h>
14012 +#include <linux/vs_time.h>
14013
14014  #include <asm/uaccess.h>
14015  #include <asm/unistd.h>
14016 @@ -93,7 +94,7 @@ SYSCALL_DEFINE1(stime, time_t __user *,
14017         if (err)
14018                 return err;
14019
14020 -       do_settimeofday(&tv);
14021 +       vx_settimeofday(&tv);
14022         return 0;
14023  }
14024
14025 @@ -186,7 +187,7 @@ int do_sys_settimeofday(const struct tim
14026                 }
14027         }
14028         if (tv)
14029 -               return do_settimeofday(tv);
14030 +               return vx_settimeofday(tv);
14031         return 0;
14032  }
14033
14034 diff -NurpP --minimal linux-4.4.111/kernel/time/timekeeping.c linux-4.4.111-vs2.3.9.5/kernel/time/timekeeping.c
14035 --- linux-4.4.111/kernel/time/timekeeping.c     2018-01-11 07:57:52.000000000 +0000
14036 +++ linux-4.4.111-vs2.3.9.5/kernel/time/timekeeping.c   2018-01-09 17:02:47.000000000 +0000
14037 @@ -23,6 +23,7 @@
14038  #include <linux/stop_machine.h>
14039  #include <linux/pvclock_gtod.h>
14040  #include <linux/compiler.h>
14041 +#include <linux/vs_time.h>
14042
14043  #include "tick-internal.h"
14044  #include "ntp_internal.h"
14045 @@ -921,7 +922,9 @@ void ktime_get_raw_and_real_ts64(struct
14046         } while (read_seqcount_retry(&tk_core.seq, seq));
14047
14048         timespec64_add_ns(ts_raw, nsecs_raw);
14049 +       vx_adjust_timespec(ts_raw);
14050         timespec64_add_ns(ts_real, nsecs_real);
14051 +       vx_adjust_timespec(ts_real);
14052  }
14053  EXPORT_SYMBOL(ktime_get_raw_and_real_ts64);
14054
14055 diff -NurpP --minimal linux-4.4.111/kernel/time/timer.c linux-4.4.111-vs2.3.9.5/kernel/time/timer.c
14056 --- linux-4.4.111/kernel/time/timer.c   2018-01-11 07:57:52.000000000 +0000
14057 +++ linux-4.4.111-vs2.3.9.5/kernel/time/timer.c 2018-01-09 16:36:34.000000000 +0000
14058 @@ -42,6 +42,10 @@
14059  #include <linux/sched/sysctl.h>
14060  #include <linux/slab.h>
14061  #include <linux/compat.h>
14062 +#include <linux/vs_base.h>
14063 +#include <linux/vs_cvirt.h>
14064 +#include <linux/vs_pid.h>
14065 +#include <linux/vserver/sched.h>
14066
14067  #include <asm/uaccess.h>
14068  #include <asm/unistd.h>
14069 diff -NurpP --minimal linux-4.4.111/kernel/user_namespace.c linux-4.4.111-vs2.3.9.5/kernel/user_namespace.c
14070 --- linux-4.4.111/kernel/user_namespace.c       2016-07-05 04:12:39.000000000 +0000
14071 +++ linux-4.4.111-vs2.3.9.5/kernel/user_namespace.c     2018-01-09 16:36:34.000000000 +0000
14072 @@ -22,6 +22,7 @@
14073  #include <linux/ctype.h>
14074  #include <linux/projid.h>
14075  #include <linux/fs_struct.h>
14076 +#include <linux/vserver/global.h>
14077
14078  static struct kmem_cache *user_ns_cachep __read_mostly;
14079  static DEFINE_MUTEX(userns_state_mutex);
14080 @@ -97,6 +98,7 @@ int create_user_ns(struct cred *new)
14081
14082         atomic_set(&ns->count, 1);
14083         /* Leave the new->user_ns reference with the new user namespace. */
14084 +       atomic_inc(&vs_global_user_ns);
14085         ns->parent = parent_ns;
14086         ns->level = parent_ns->level + 1;
14087         ns->owner = owner;
14088 @@ -145,6 +147,7 @@ void free_user_ns(struct user_namespace
14089                 key_put(ns->persistent_keyring_register);
14090  #endif
14091                 ns_free_inum(&ns->ns);
14092 +               atomic_dec(&vs_global_user_ns);
14093                 kmem_cache_free(user_ns_cachep, ns);
14094                 ns = parent;
14095         } while (atomic_dec_and_test(&parent->count));
14096 @@ -358,6 +361,18 @@ gid_t from_kgid_munged(struct user_names
14097  }
14098  EXPORT_SYMBOL(from_kgid_munged);
14099
14100 +ktag_t make_ktag(struct user_namespace *from, vtag_t tag)
14101 +{
14102 +       return KTAGT_INIT(tag);
14103 +}
14104 +EXPORT_SYMBOL(make_ktag);
14105 +
14106 +vtag_t from_ktag(struct user_namespace *to, ktag_t tag)
14107 +{
14108 +       return __ktag_val(tag);
14109 +}
14110 +EXPORT_SYMBOL(from_ktag);
14111 +
14112  /**
14113   *     make_kprojid - Map a user-namespace projid pair into a kprojid.
14114   *     @ns:  User namespace that the projid is in
14115 diff -NurpP --minimal linux-4.4.111/kernel/utsname.c linux-4.4.111-vs2.3.9.5/kernel/utsname.c
14116 --- linux-4.4.111/kernel/utsname.c      2015-04-12 22:12:50.000000000 +0000
14117 +++ linux-4.4.111-vs2.3.9.5/kernel/utsname.c    2018-01-09 16:36:34.000000000 +0000
14118 @@ -16,14 +16,17 @@
14119  #include <linux/slab.h>
14120  #include <linux/user_namespace.h>
14121  #include <linux/proc_ns.h>
14122 +#include <linux/vserver/global.h>
14123
14124  static struct uts_namespace *create_uts_ns(void)
14125  {
14126         struct uts_namespace *uts_ns;
14127
14128         uts_ns = kmalloc(sizeof(struct uts_namespace), GFP_KERNEL);
14129 -       if (uts_ns)
14130 +       if (uts_ns) {
14131                 kref_init(&uts_ns->kref);
14132 +               atomic_inc(&vs_global_uts_ns);
14133 +       }
14134         return uts_ns;
14135  }
14136
14137 @@ -87,6 +90,7 @@ void free_uts_ns(struct kref *kref)
14138         ns = container_of(kref, struct uts_namespace, kref);
14139         put_user_ns(ns->user_ns);
14140         ns_free_inum(&ns->ns);
14141 +       atomic_dec(&vs_global_uts_ns);
14142         kfree(ns);
14143  }
14144
14145 diff -NurpP --minimal linux-4.4.111/kernel/vserver/Kconfig linux-4.4.111-vs2.3.9.5/kernel/vserver/Kconfig
14146 --- linux-4.4.111/kernel/vserver/Kconfig        1970-01-01 00:00:00.000000000 +0000
14147 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/Kconfig      2018-01-09 16:36:34.000000000 +0000
14148 @@ -0,0 +1,230 @@
14149 +#
14150 +# Linux VServer configuration
14151 +#
14152 +
14153 +menu "Linux VServer"
14154 +
14155 +config VSERVER_AUTO_LBACK
14156 +       bool    "Automatically Assign Loopback IP"
14157 +       default y
14158 +       help
14159 +         Automatically assign a guest specific loopback
14160 +         IP and add it to the kernel network stack on
14161 +         startup.
14162 +
14163 +config VSERVER_AUTO_SINGLE
14164 +       bool    "Automatic Single IP Special Casing"
14165 +       default n
14166 +       help
14167 +         This allows network contexts with a single IP to
14168 +         automatically remap 0.0.0.0 bindings to that IP,
14169 +         avoiding further network checks and improving
14170 +         performance.
14171 +
14172 +         (note: such guests do not allow to change the ip
14173 +          on the fly and do not show loopback addresses)
14174 +
14175 +config VSERVER_COWBL
14176 +       bool    "Enable COW Immutable Link Breaking"
14177 +       default y
14178 +       help
14179 +         This enables the COW (Copy-On-Write) link break code.
14180 +         It allows you to treat unified files like normal files
14181 +         when writing to them (which will implicitely break the
14182 +         link and create a copy of the unified file)
14183 +
14184 +config VSERVER_VTIME
14185 +       bool    "Enable Virtualized Guest Time (EXPERIMENTAL)"
14186 +       default n
14187 +       help
14188 +         This enables per guest time offsets to allow for
14189 +         adjusting the system clock individually per guest.
14190 +         this adds some overhead to the time functions and
14191 +         therefore should not be enabled without good reason.
14192 +
14193 +config VSERVER_DEVICE
14194 +       bool    "Enable Guest Device Mapping (EXPERIMENTAL)"
14195 +       default n
14196 +       help
14197 +         This enables generic device remapping.
14198 +
14199 +config VSERVER_PROC_SECURE
14200 +       bool    "Enable Proc Security"
14201 +       depends on PROC_FS
14202 +       default y
14203 +       help
14204 +         This configures ProcFS security to initially hide
14205 +         non-process entries for all contexts except the main and
14206 +         spectator context (i.e. for all guests), which is a secure
14207 +         default.
14208 +
14209 +         (note: on 1.2x the entries were visible by default)
14210 +
14211 +choice
14212 +       prompt  "Persistent Inode Tagging"
14213 +       default TAGGING_ID24
14214 +       help
14215 +         This adds persistent context information to filesystems
14216 +         mounted with the tagxid option. Tagging is a requirement
14217 +         for per-context disk limits and per-context quota.
14218 +
14219 +
14220 +config TAGGING_NONE
14221 +       bool    "Disabled"
14222 +       help
14223 +         do not store per-context information in inodes.
14224 +
14225 +config TAGGING_UID16
14226 +       bool    "UID16/GID32"
14227 +       help
14228 +         reduces UID to 16 bit, but leaves GID at 32 bit.
14229 +
14230 +config TAGGING_GID16
14231 +       bool    "UID32/GID16"
14232 +       help
14233 +         reduces GID to 16 bit, but leaves UID at 32 bit.
14234 +
14235 +config TAGGING_ID24
14236 +       bool    "UID24/GID24"
14237 +       help
14238 +         uses the upper 8bit from UID and GID for XID tagging
14239 +         which leaves 24bit for UID/GID each, which should be
14240 +         more than sufficient for normal use.
14241 +
14242 +config TAGGING_INTERN
14243 +       bool    "UID32/GID32"
14244 +       help
14245 +         this uses otherwise reserved inode fields in the on
14246 +         disk representation, which limits the use to a few
14247 +         filesystems (currently ext2 and ext3)
14248 +
14249 +endchoice
14250 +
14251 +config TAG_NFSD
14252 +       bool    "Tag NFSD User Auth and Files"
14253 +       default n
14254 +       help
14255 +         Enable this if you do want the in-kernel NFS
14256 +         Server to use the tagging specified above.
14257 +         (will require patched clients too)
14258 +
14259 +config VSERVER_PRIVACY
14260 +       bool    "Honor Privacy Aspects of Guests"
14261 +       default n
14262 +       help
14263 +         When enabled, most context checks will disallow
14264 +         access to structures assigned to a specific context,
14265 +         like ptys or loop devices.
14266 +
14267 +config VSERVER_CONTEXTS
14268 +       int     "Maximum number of Contexts (1-65533)"  if EMBEDDED
14269 +       range 1 65533
14270 +       default "768"   if 64BIT
14271 +       default "256"
14272 +       help
14273 +         This setting will optimize certain data structures
14274 +         and memory allocations according to the expected
14275 +         maximum.
14276 +
14277 +         note: this is not a strict upper limit.
14278 +
14279 +config VSERVER_WARN
14280 +       bool    "VServer Warnings"
14281 +       default y
14282 +       help
14283 +         This enables various runtime warnings, which will
14284 +         notify about potential manipulation attempts or
14285 +         resource shortage. It is generally considered to
14286 +         be a good idea to have that enabled.
14287 +
14288 +config VSERVER_WARN_DEVPTS
14289 +       bool    "VServer DevPTS Warnings"
14290 +       depends on VSERVER_WARN
14291 +       default y
14292 +       help
14293 +         This enables DevPTS related warnings, issued when a
14294 +         process inside a context tries to lookup or access
14295 +         a dynamic pts from the host or a different context.
14296 +
14297 +config VSERVER_DEBUG
14298 +       bool    "VServer Debugging Code"
14299 +       default n
14300 +       help
14301 +         Set this to yes if you want to be able to activate
14302 +         debugging output at runtime. It adds a very small
14303 +         overhead to all vserver related functions and
14304 +         increases the kernel size by about 20k.
14305 +
14306 +config VSERVER_HISTORY
14307 +       bool    "VServer History Tracing"
14308 +       depends on VSERVER_DEBUG
14309 +       default n
14310 +       help
14311 +         Set this to yes if you want to record the history of
14312 +         linux-vserver activities, so they can be replayed in
14313 +         the event of a kernel panic or oops.
14314 +
14315 +config VSERVER_HISTORY_SIZE
14316 +       int     "Per-CPU History Size (32-65536)"
14317 +       depends on VSERVER_HISTORY
14318 +       range 32 65536
14319 +       default 64
14320 +       help
14321 +         This allows you to specify the number of entries in
14322 +         the per-CPU history buffer.
14323 +
14324 +config VSERVER_EXTRA_MNT_CHECK
14325 +       bool    "Extra Checks for Reachability"
14326 +       default n
14327 +       help
14328 +         Set this to yes if you want to do extra checks for
14329 +         vfsmount reachability in the proc filesystem code.
14330 +         This shouldn't be required on any setup utilizing
14331 +         mnt namespaces.
14332 +
14333 +choice
14334 +       prompt  "Quotes used in debug and warn messages"
14335 +       default QUOTES_ISO8859
14336 +
14337 +config QUOTES_ISO8859
14338 +       bool    "Extended ASCII (ISO 8859) angle quotes"
14339 +       help
14340 +         This uses the extended ASCII characters \xbb
14341 +         and \xab for quoting file and process names.
14342 +
14343 +config QUOTES_UTF8
14344 +       bool    "UTF-8 angle quotes"
14345 +       help
14346 +         This uses the the UTF-8 sequences for angle
14347 +         quotes to quote file and process names.
14348 +
14349 +config QUOTES_ASCII
14350 +       bool    "ASCII single quotes"
14351 +       help
14352 +         This uses the ASCII single quote character
14353 +         (\x27) to quote file and process names.
14354 +
14355 +endchoice
14356 +
14357 +endmenu
14358 +
14359 +
14360 +config VSERVER
14361 +       bool
14362 +       default y
14363 +       select NAMESPACES
14364 +       select UTS_NS
14365 +       select IPC_NS
14366 +#      select USER_NS
14367 +       select SYSVIPC
14368 +
14369 +config VSERVER_SECURITY
14370 +       bool
14371 +       depends on SECURITY
14372 +       default y
14373 +       select SECURITY_CAPABILITIES
14374 +
14375 +config VSERVER_DISABLED
14376 +       bool
14377 +       default n
14378 +
14379 diff -NurpP --minimal linux-4.4.111/kernel/vserver/Makefile linux-4.4.111-vs2.3.9.5/kernel/vserver/Makefile
14380 --- linux-4.4.111/kernel/vserver/Makefile       1970-01-01 00:00:00.000000000 +0000
14381 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/Makefile     2018-01-09 16:36:34.000000000 +0000
14382 @@ -0,0 +1,18 @@
14383 +#
14384 +# Makefile for the Linux vserver routines.
14385 +#
14386 +
14387 +
14388 +obj-y          += vserver.o
14389 +
14390 +vserver-y      := switch.o context.o space.o sched.o network.o inode.o \
14391 +                  limit.o cvirt.o cacct.o signal.o helper.o init.o \
14392 +                  dlimit.o tag.o
14393 +
14394 +vserver-$(CONFIG_INET) += inet.o
14395 +vserver-$(CONFIG_PROC_FS) += proc.o
14396 +vserver-$(CONFIG_VSERVER_DEBUG) += sysctl.o debug.o
14397 +vserver-$(CONFIG_VSERVER_HISTORY) += history.o
14398 +vserver-$(CONFIG_VSERVER_MONITOR) += monitor.o
14399 +vserver-$(CONFIG_VSERVER_DEVICE) += device.o
14400 +
14401 diff -NurpP --minimal linux-4.4.111/kernel/vserver/cacct.c linux-4.4.111-vs2.3.9.5/kernel/vserver/cacct.c
14402 --- linux-4.4.111/kernel/vserver/cacct.c        1970-01-01 00:00:00.000000000 +0000
14403 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/cacct.c      2018-01-09 16:36:34.000000000 +0000
14404 @@ -0,0 +1,42 @@
14405 +/*
14406 + *  linux/kernel/vserver/cacct.c
14407 + *
14408 + *  Virtual Server: Context Accounting
14409 + *
14410 + *  Copyright (C) 2006-2007 Herbert P?tzl
14411 + *
14412 + *  V0.01  added accounting stats
14413 + *
14414 + */
14415 +
14416 +#include <linux/types.h>
14417 +#include <linux/vs_context.h>
14418 +#include <linux/vserver/cacct_cmd.h>
14419 +#include <linux/vserver/cacct_int.h>
14420 +
14421 +#include <asm/errno.h>
14422 +#include <asm/uaccess.h>
14423 +
14424 +
14425 +int vc_sock_stat(struct vx_info *vxi, void __user *data)
14426 +{
14427 +       struct vcmd_sock_stat_v0 vc_data;
14428 +       int j, field;
14429 +
14430 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
14431 +               return -EFAULT;
14432 +
14433 +       field = vc_data.field;
14434 +       if ((field < 0) || (field >= VXA_SOCK_SIZE))
14435 +               return -EINVAL;
14436 +
14437 +       for (j = 0; j < 3; j++) {
14438 +               vc_data.count[j] = vx_sock_count(&vxi->cacct, field, j);
14439 +               vc_data.total[j] = vx_sock_total(&vxi->cacct, field, j);
14440 +       }
14441 +
14442 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
14443 +               return -EFAULT;
14444 +       return 0;
14445 +}
14446 +
14447 diff -NurpP --minimal linux-4.4.111/kernel/vserver/cacct_init.h linux-4.4.111-vs2.3.9.5/kernel/vserver/cacct_init.h
14448 --- linux-4.4.111/kernel/vserver/cacct_init.h   1970-01-01 00:00:00.000000000 +0000
14449 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/cacct_init.h 2018-01-09 16:36:34.000000000 +0000
14450 @@ -0,0 +1,25 @@
14451 +
14452 +
14453 +static inline void vx_info_init_cacct(struct _vx_cacct *cacct)
14454 +{
14455 +       int i, j;
14456 +
14457 +
14458 +       for (i = 0; i < VXA_SOCK_SIZE; i++) {
14459 +               for (j = 0; j < 3; j++) {
14460 +                       atomic_long_set(&cacct->sock[i][j].count, 0);
14461 +                       atomic_long_set(&cacct->sock[i][j].total, 0);
14462 +               }
14463 +       }
14464 +       for (i = 0; i < 8; i++)
14465 +               atomic_set(&cacct->slab[i], 0);
14466 +       for (i = 0; i < 5; i++)
14467 +               for (j = 0; j < 4; j++)
14468 +                       atomic_set(&cacct->page[i][j], 0);
14469 +}
14470 +
14471 +static inline void vx_info_exit_cacct(struct _vx_cacct *cacct)
14472 +{
14473 +       return;
14474 +}
14475 +
14476 diff -NurpP --minimal linux-4.4.111/kernel/vserver/cacct_proc.h linux-4.4.111-vs2.3.9.5/kernel/vserver/cacct_proc.h
14477 --- linux-4.4.111/kernel/vserver/cacct_proc.h   1970-01-01 00:00:00.000000000 +0000
14478 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/cacct_proc.h 2018-01-09 16:36:34.000000000 +0000
14479 @@ -0,0 +1,53 @@
14480 +#ifndef _VX_CACCT_PROC_H
14481 +#define _VX_CACCT_PROC_H
14482 +
14483 +#include <linux/vserver/cacct_int.h>
14484 +
14485 +
14486 +#define VX_SOCKA_TOP   \
14487 +       "Type\t    recv #/bytes\t\t   send #/bytes\t\t    fail #/bytes\n"
14488 +
14489 +static inline int vx_info_proc_cacct(struct _vx_cacct *cacct, char *buffer)
14490 +{
14491 +       int i, j, length = 0;
14492 +       static char *type[VXA_SOCK_SIZE] = {
14493 +               "UNSPEC", "UNIX", "INET", "INET6", "PACKET", "OTHER"
14494 +       };
14495 +
14496 +       length += sprintf(buffer + length, VX_SOCKA_TOP);
14497 +       for (i = 0; i < VXA_SOCK_SIZE; i++) {
14498 +               length += sprintf(buffer + length, "%s:", type[i]);
14499 +               for (j = 0; j < 3; j++) {
14500 +                       length += sprintf(buffer + length,
14501 +                               "\t%10lu/%-10lu",
14502 +                               vx_sock_count(cacct, i, j),
14503 +                               vx_sock_total(cacct, i, j));
14504 +               }
14505 +               buffer[length++] = '\n';
14506 +       }
14507 +
14508 +       length += sprintf(buffer + length, "\n");
14509 +       length += sprintf(buffer + length,
14510 +               "slab:\t %8u %8u %8u %8u\n",
14511 +               atomic_read(&cacct->slab[1]),
14512 +               atomic_read(&cacct->slab[4]),
14513 +               atomic_read(&cacct->slab[0]),
14514 +               atomic_read(&cacct->slab[2]));
14515 +
14516 +       length += sprintf(buffer + length, "\n");
14517 +       for (i = 0; i < 5; i++) {
14518 +               length += sprintf(buffer + length,
14519 +                       "page[%d]: %8u %8u %8u %8u\t %8u %8u %8u %8u\n", i,
14520 +                       atomic_read(&cacct->page[i][0]),
14521 +                       atomic_read(&cacct->page[i][1]),
14522 +                       atomic_read(&cacct->page[i][2]),
14523 +                       atomic_read(&cacct->page[i][3]),
14524 +                       atomic_read(&cacct->page[i][4]),
14525 +                       atomic_read(&cacct->page[i][5]),
14526 +                       atomic_read(&cacct->page[i][6]),
14527 +                       atomic_read(&cacct->page[i][7]));
14528 +       }
14529 +       return length;
14530 +}
14531 +
14532 +#endif /* _VX_CACCT_PROC_H */
14533 diff -NurpP --minimal linux-4.4.111/kernel/vserver/context.c linux-4.4.111-vs2.3.9.5/kernel/vserver/context.c
14534 --- linux-4.4.111/kernel/vserver/context.c      1970-01-01 00:00:00.000000000 +0000
14535 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/context.c    2018-01-09 16:36:34.000000000 +0000
14536 @@ -0,0 +1,1119 @@
14537 +/*
14538 + *  linux/kernel/vserver/context.c
14539 + *
14540 + *  Virtual Server: Context Support
14541 + *
14542 + *  Copyright (C) 2003-2011  Herbert P?tzl
14543 + *
14544 + *  V0.01  context helper
14545 + *  V0.02  vx_ctx_kill syscall command
14546 + *  V0.03  replaced context_info calls
14547 + *  V0.04  redesign of struct (de)alloc
14548 + *  V0.05  rlimit basic implementation
14549 + *  V0.06  task_xid and info commands
14550 + *  V0.07  context flags and caps
14551 + *  V0.08  switch to RCU based hash
14552 + *  V0.09  revert to non RCU for now
14553 + *  V0.10  and back to working RCU hash
14554 + *  V0.11  and back to locking again
14555 + *  V0.12  referenced context store
14556 + *  V0.13  separate per cpu data
14557 + *  V0.14  changed vcmds to vxi arg
14558 + *  V0.15  added context stat
14559 + *  V0.16  have __create claim() the vxi
14560 + *  V0.17  removed older and legacy stuff
14561 + *  V0.18  added user credentials
14562 + *  V0.19  added warn mask
14563 + *
14564 + */
14565 +
14566 +#include <linux/slab.h>
14567 +#include <linux/types.h>
14568 +#include <linux/security.h>
14569 +#include <linux/pid_namespace.h>
14570 +#include <linux/capability.h>
14571 +
14572 +#include <linux/vserver/context.h>
14573 +#include <linux/vserver/network.h>
14574 +#include <linux/vserver/debug.h>
14575 +#include <linux/vserver/limit.h>
14576 +#include <linux/vserver/limit_int.h>
14577 +#include <linux/vserver/space.h>
14578 +#include <linux/init_task.h>
14579 +#include <linux/fs_struct.h>
14580 +#include <linux/cred.h>
14581 +
14582 +#include <linux/vs_context.h>
14583 +#include <linux/vs_limit.h>
14584 +#include <linux/vs_pid.h>
14585 +#include <linux/vserver/context_cmd.h>
14586 +
14587 +#include "cvirt_init.h"
14588 +#include "cacct_init.h"
14589 +#include "limit_init.h"
14590 +#include "sched_init.h"
14591 +
14592 +
14593 +atomic_t vx_global_ctotal      = ATOMIC_INIT(0);
14594 +atomic_t vx_global_cactive     = ATOMIC_INIT(0);
14595 +
14596 +
14597 +/*     now inactive context structures */
14598 +
14599 +static struct hlist_head vx_info_inactive = HLIST_HEAD_INIT;
14600 +
14601 +static DEFINE_SPINLOCK(vx_info_inactive_lock);
14602 +
14603 +
14604 +/*     __alloc_vx_info()
14605 +
14606 +       * allocate an initialized vx_info struct
14607 +       * doesn't make it visible (hash)                        */
14608 +
14609 +static struct vx_info *__alloc_vx_info(vxid_t xid)
14610 +{
14611 +       struct vx_info *new = NULL;
14612 +       int cpu, index;
14613 +
14614 +       vxdprintk(VXD_CBIT(xid, 0), "alloc_vx_info(%d)*", xid);
14615 +
14616 +       /* would this benefit from a slab cache? */
14617 +       new = kmalloc(sizeof(struct vx_info), GFP_KERNEL);
14618 +       if (!new)
14619 +               return 0;
14620 +
14621 +       memset(new, 0, sizeof(struct vx_info));
14622 +#ifdef CONFIG_SMP
14623 +       new->ptr_pc = alloc_percpu(struct _vx_info_pc);
14624 +       if (!new->ptr_pc)
14625 +               goto error;
14626 +#endif
14627 +       new->vx_id = xid;
14628 +       INIT_HLIST_NODE(&new->vx_hlist);
14629 +       atomic_set(&new->vx_usecnt, 0);
14630 +       atomic_set(&new->vx_tasks, 0);
14631 +       new->vx_parent = NULL;
14632 +       new->vx_state = 0;
14633 +       init_waitqueue_head(&new->vx_wait);
14634 +
14635 +       /* prepare reaper */
14636 +       get_task_struct(init_pid_ns.child_reaper);
14637 +       new->vx_reaper = init_pid_ns.child_reaper;
14638 +       new->vx_badness_bias = 0;
14639 +
14640 +       /* rest of init goes here */
14641 +       vx_info_init_limit(&new->limit);
14642 +       vx_info_init_sched(&new->sched);
14643 +       vx_info_init_cvirt(&new->cvirt);
14644 +       vx_info_init_cacct(&new->cacct);
14645 +
14646 +       /* per cpu data structures */
14647 +       for_each_possible_cpu(cpu) {
14648 +               vx_info_init_sched_pc(
14649 +                       &vx_per_cpu(new, sched_pc, cpu), cpu);
14650 +               vx_info_init_cvirt_pc(
14651 +                       &vx_per_cpu(new, cvirt_pc, cpu), cpu);
14652 +       }
14653 +
14654 +       new->vx_flags = VXF_INIT_SET;
14655 +       new->vx_bcaps = CAP_FULL_SET;   // maybe ~CAP_SETPCAP
14656 +       new->vx_ccaps = 0;
14657 +       new->vx_umask = 0;
14658 +       new->vx_wmask = 0;
14659 +
14660 +       new->reboot_cmd = 0;
14661 +       new->exit_code = 0;
14662 +
14663 +       // preconfig spaces
14664 +       for (index = 0; index < VX_SPACES; index++) {
14665 +               struct _vx_space *space = &new->space[index];
14666 +
14667 +               // filesystem
14668 +               spin_lock(&init_fs.lock);
14669 +               init_fs.users++;
14670 +               spin_unlock(&init_fs.lock);
14671 +               space->vx_fs = &init_fs;
14672 +
14673 +               /* FIXME: do we want defaults? */
14674 +               // space->vx_real_cred = 0;
14675 +               // space->vx_cred = 0;
14676 +       }
14677 +
14678 +
14679 +       vxdprintk(VXD_CBIT(xid, 0),
14680 +               "alloc_vx_info(%d) = %p", xid, new);
14681 +       vxh_alloc_vx_info(new);
14682 +       atomic_inc(&vx_global_ctotal);
14683 +       return new;
14684 +#ifdef CONFIG_SMP
14685 +error:
14686 +       kfree(new);
14687 +       return 0;
14688 +#endif
14689 +}
14690 +
14691 +/*     __dealloc_vx_info()
14692 +
14693 +       * final disposal of vx_info                             */
14694 +
14695 +static void __dealloc_vx_info(struct vx_info *vxi)
14696 +{
14697 +#ifdef CONFIG_VSERVER_WARN
14698 +       struct vx_info_save vxis;
14699 +       int cpu;
14700 +#endif
14701 +       vxdprintk(VXD_CBIT(xid, 0),
14702 +               "dealloc_vx_info(%p)", vxi);
14703 +       vxh_dealloc_vx_info(vxi);
14704 +
14705 +#ifdef CONFIG_VSERVER_WARN
14706 +       enter_vx_info(vxi, &vxis);
14707 +       vx_info_exit_limit(&vxi->limit);
14708 +       vx_info_exit_sched(&vxi->sched);
14709 +       vx_info_exit_cvirt(&vxi->cvirt);
14710 +       vx_info_exit_cacct(&vxi->cacct);
14711 +
14712 +       for_each_possible_cpu(cpu) {
14713 +               vx_info_exit_sched_pc(
14714 +                       &vx_per_cpu(vxi, sched_pc, cpu), cpu);
14715 +               vx_info_exit_cvirt_pc(
14716 +                       &vx_per_cpu(vxi, cvirt_pc, cpu), cpu);
14717 +       }
14718 +       leave_vx_info(&vxis);
14719 +#endif
14720 +
14721 +       vxi->vx_id = -1;
14722 +       vxi->vx_state |= VXS_RELEASED;
14723 +
14724 +#ifdef CONFIG_SMP
14725 +       free_percpu(vxi->ptr_pc);
14726 +#endif
14727 +       kfree(vxi);
14728 +       atomic_dec(&vx_global_ctotal);
14729 +}
14730 +
14731 +static void __shutdown_vx_info(struct vx_info *vxi)
14732 +{
14733 +       struct nsproxy *nsproxy;
14734 +       struct fs_struct *fs;
14735 +       struct cred *cred;
14736 +       int index, kill;
14737 +
14738 +       might_sleep();
14739 +
14740 +       vxi->vx_state |= VXS_SHUTDOWN;
14741 +       vs_state_change(vxi, VSC_SHUTDOWN);
14742 +
14743 +       for (index = 0; index < VX_SPACES; index++) {
14744 +               struct _vx_space *space = &vxi->space[index];
14745 +
14746 +               nsproxy = xchg(&space->vx_nsproxy, NULL);
14747 +               if (nsproxy)
14748 +                       put_nsproxy(nsproxy);
14749 +
14750 +               fs = xchg(&space->vx_fs, NULL);
14751 +               spin_lock(&fs->lock);
14752 +               kill = !--fs->users;
14753 +               spin_unlock(&fs->lock);
14754 +               if (kill)
14755 +                       free_fs_struct(fs);
14756 +
14757 +               cred = (struct cred *)xchg(&space->vx_cred, NULL);
14758 +               if (cred)
14759 +                       abort_creds(cred);
14760 +       }
14761 +}
14762 +
14763 +/* exported stuff */
14764 +
14765 +void free_vx_info(struct vx_info *vxi)
14766 +{
14767 +       unsigned long flags;
14768 +       unsigned index;
14769 +
14770 +       /* check for reference counts first */
14771 +       BUG_ON(atomic_read(&vxi->vx_usecnt));
14772 +       BUG_ON(atomic_read(&vxi->vx_tasks));
14773 +
14774 +       /* context must not be hashed */
14775 +       BUG_ON(vx_info_state(vxi, VXS_HASHED));
14776 +
14777 +       /* context shutdown is mandatory */
14778 +       BUG_ON(!vx_info_state(vxi, VXS_SHUTDOWN));
14779 +
14780 +       /* spaces check */
14781 +       for (index = 0; index < VX_SPACES; index++) {
14782 +               struct _vx_space *space = &vxi->space[index];
14783 +
14784 +               BUG_ON(space->vx_nsproxy);
14785 +               BUG_ON(space->vx_fs);
14786 +               // BUG_ON(space->vx_real_cred);
14787 +               // BUG_ON(space->vx_cred);
14788 +       }
14789 +
14790 +       spin_lock_irqsave(&vx_info_inactive_lock, flags);
14791 +       hlist_del(&vxi->vx_hlist);
14792 +       spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
14793 +
14794 +       __dealloc_vx_info(vxi);
14795 +}
14796 +
14797 +
14798 +/*     hash table for vx_info hash */
14799 +
14800 +#define VX_HASH_SIZE   13
14801 +
14802 +static struct hlist_head vx_info_hash[VX_HASH_SIZE] =
14803 +       { [0 ... VX_HASH_SIZE-1] = HLIST_HEAD_INIT };
14804 +
14805 +static DEFINE_SPINLOCK(vx_info_hash_lock);
14806 +
14807 +
14808 +static inline unsigned int __hashval(vxid_t xid)
14809 +{
14810 +       return (xid % VX_HASH_SIZE);
14811 +}
14812 +
14813 +
14814 +
14815 +/*     __hash_vx_info()
14816 +
14817 +       * add the vxi to the global hash table
14818 +       * requires the hash_lock to be held                     */
14819 +
14820 +static inline void __hash_vx_info(struct vx_info *vxi)
14821 +{
14822 +       struct hlist_head *head;
14823 +
14824 +       vxd_assert_lock(&vx_info_hash_lock);
14825 +       vxdprintk(VXD_CBIT(xid, 4),
14826 +               "__hash_vx_info: %p[#%d]", vxi, vxi->vx_id);
14827 +       vxh_hash_vx_info(vxi);
14828 +
14829 +       /* context must not be hashed */
14830 +       BUG_ON(vx_info_state(vxi, VXS_HASHED));
14831 +
14832 +       vxi->vx_state |= VXS_HASHED;
14833 +       head = &vx_info_hash[__hashval(vxi->vx_id)];
14834 +       hlist_add_head(&vxi->vx_hlist, head);
14835 +       atomic_inc(&vx_global_cactive);
14836 +}
14837 +
14838 +/*     __unhash_vx_info()
14839 +
14840 +       * remove the vxi from the global hash table
14841 +       * requires the hash_lock to be held                     */
14842 +
14843 +static inline void __unhash_vx_info(struct vx_info *vxi)
14844 +{
14845 +       unsigned long flags;
14846 +
14847 +       vxd_assert_lock(&vx_info_hash_lock);
14848 +       vxdprintk(VXD_CBIT(xid, 4),
14849 +               "__unhash_vx_info: %p[#%d.%d.%d]", vxi, vxi->vx_id,
14850 +               atomic_read(&vxi->vx_usecnt), atomic_read(&vxi->vx_tasks));
14851 +       vxh_unhash_vx_info(vxi);
14852 +
14853 +       /* context must be hashed */
14854 +       BUG_ON(!vx_info_state(vxi, VXS_HASHED));
14855 +       /* but without tasks */
14856 +       BUG_ON(atomic_read(&vxi->vx_tasks));
14857 +
14858 +       vxi->vx_state &= ~VXS_HASHED;
14859 +       hlist_del_init(&vxi->vx_hlist);
14860 +       spin_lock_irqsave(&vx_info_inactive_lock, flags);
14861 +       hlist_add_head(&vxi->vx_hlist, &vx_info_inactive);
14862 +       spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
14863 +       atomic_dec(&vx_global_cactive);
14864 +}
14865 +
14866 +
14867 +/*     __lookup_vx_info()
14868 +
14869 +       * requires the hash_lock to be held
14870 +       * doesn't increment the vx_refcnt                       */
14871 +
14872 +static inline struct vx_info *__lookup_vx_info(vxid_t xid)
14873 +{
14874 +       struct hlist_head *head = &vx_info_hash[__hashval(xid)];
14875 +       struct hlist_node *pos;
14876 +       struct vx_info *vxi;
14877 +
14878 +       vxd_assert_lock(&vx_info_hash_lock);
14879 +       hlist_for_each(pos, head) {
14880 +               vxi = hlist_entry(pos, struct vx_info, vx_hlist);
14881 +
14882 +               if (vxi->vx_id == xid)
14883 +                       goto found;
14884 +       }
14885 +       vxi = NULL;
14886 +found:
14887 +       vxdprintk(VXD_CBIT(xid, 0),
14888 +               "__lookup_vx_info(#%u): %p[#%u]",
14889 +               xid, vxi, vxi ? vxi->vx_id : 0);
14890 +       vxh_lookup_vx_info(vxi, xid);
14891 +       return vxi;
14892 +}
14893 +
14894 +
14895 +/*     __create_vx_info()
14896 +
14897 +       * create the requested context
14898 +       * get(), claim() and hash it                            */
14899 +
14900 +static struct vx_info *__create_vx_info(int id)
14901 +{
14902 +       struct vx_info *new, *vxi = NULL;
14903 +
14904 +       vxdprintk(VXD_CBIT(xid, 1), "create_vx_info(%d)*", id);
14905 +
14906 +       if (!(new = __alloc_vx_info(id)))
14907 +               return ERR_PTR(-ENOMEM);
14908 +
14909 +       /* required to make dynamic xids unique */
14910 +       spin_lock(&vx_info_hash_lock);
14911 +
14912 +       /* static context requested */
14913 +       if ((vxi = __lookup_vx_info(id))) {
14914 +               vxdprintk(VXD_CBIT(xid, 0),
14915 +                       "create_vx_info(%d) = %p (already there)", id, vxi);
14916 +               if (vx_info_flags(vxi, VXF_STATE_SETUP, 0))
14917 +                       vxi = ERR_PTR(-EBUSY);
14918 +               else
14919 +                       vxi = ERR_PTR(-EEXIST);
14920 +               goto out_unlock;
14921 +       }
14922 +       /* new context */
14923 +       vxdprintk(VXD_CBIT(xid, 0),
14924 +               "create_vx_info(%d) = %p (new)", id, new);
14925 +       claim_vx_info(new, NULL);
14926 +       __hash_vx_info(get_vx_info(new));
14927 +       vxi = new, new = NULL;
14928 +
14929 +out_unlock:
14930 +       spin_unlock(&vx_info_hash_lock);
14931 +       vxh_create_vx_info(IS_ERR(vxi) ? NULL : vxi, id);
14932 +       if (new)
14933 +               __dealloc_vx_info(new);
14934 +       return vxi;
14935 +}
14936 +
14937 +
14938 +/*     exported stuff                                          */
14939 +
14940 +
14941 +void unhash_vx_info(struct vx_info *vxi)
14942 +{
14943 +       spin_lock(&vx_info_hash_lock);
14944 +       __unhash_vx_info(vxi);
14945 +       spin_unlock(&vx_info_hash_lock);
14946 +       __shutdown_vx_info(vxi);
14947 +       __wakeup_vx_info(vxi);
14948 +}
14949 +
14950 +
14951 +/*     lookup_vx_info()
14952 +
14953 +       * search for a vx_info and get() it
14954 +       * negative id means current                             */
14955 +
14956 +struct vx_info *lookup_vx_info(int id)
14957 +{
14958 +       struct vx_info *vxi = NULL;
14959 +
14960 +       if (id < 0) {
14961 +               vxi = get_vx_info(current_vx_info());
14962 +       } else if (id > 1) {
14963 +               spin_lock(&vx_info_hash_lock);
14964 +               vxi = get_vx_info(__lookup_vx_info(id));
14965 +               spin_unlock(&vx_info_hash_lock);
14966 +       }
14967 +       return vxi;
14968 +}
14969 +
14970 +/*     xid_is_hashed()
14971 +
14972 +       * verify that xid is still hashed                       */
14973 +
14974 +int xid_is_hashed(vxid_t xid)
14975 +{
14976 +       int hashed;
14977 +
14978 +       spin_lock(&vx_info_hash_lock);
14979 +       hashed = (__lookup_vx_info(xid) != NULL);
14980 +       spin_unlock(&vx_info_hash_lock);
14981 +       return hashed;
14982 +}
14983 +
14984 +#ifdef CONFIG_PROC_FS
14985 +
14986 +/*     get_xid_list()
14987 +
14988 +       * get a subset of hashed xids for proc
14989 +       * assumes size is at least one                          */
14990 +
14991 +int get_xid_list(int index, unsigned int *xids, int size)
14992 +{
14993 +       int hindex, nr_xids = 0;
14994 +
14995 +       /* only show current and children */
14996 +       if (!vx_check(0, VS_ADMIN | VS_WATCH)) {
14997 +               if (index > 0)
14998 +                       return 0;
14999 +               xids[nr_xids] = vx_current_xid();
15000 +               return 1;
15001 +       }
15002 +
15003 +       for (hindex = 0; hindex < VX_HASH_SIZE; hindex++) {
15004 +               struct hlist_head *head = &vx_info_hash[hindex];
15005 +               struct hlist_node *pos;
15006 +
15007 +               spin_lock(&vx_info_hash_lock);
15008 +               hlist_for_each(pos, head) {
15009 +                       struct vx_info *vxi;
15010 +
15011 +                       if (--index > 0)
15012 +                               continue;
15013 +
15014 +                       vxi = hlist_entry(pos, struct vx_info, vx_hlist);
15015 +                       xids[nr_xids] = vxi->vx_id;
15016 +                       if (++nr_xids >= size) {
15017 +                               spin_unlock(&vx_info_hash_lock);
15018 +                               goto out;
15019 +                       }
15020 +               }
15021 +               /* keep the lock time short */
15022 +               spin_unlock(&vx_info_hash_lock);
15023 +       }
15024 +out:
15025 +       return nr_xids;
15026 +}
15027 +#endif
15028 +
15029 +#ifdef CONFIG_VSERVER_DEBUG
15030 +
15031 +void   dump_vx_info_inactive(int level)
15032 +{
15033 +       struct hlist_node *entry, *next;
15034 +
15035 +       hlist_for_each_safe(entry, next, &vx_info_inactive) {
15036 +               struct vx_info *vxi =
15037 +                       list_entry(entry, struct vx_info, vx_hlist);
15038 +
15039 +               dump_vx_info(vxi, level);
15040 +       }
15041 +}
15042 +
15043 +#endif
15044 +
15045 +#if 0
15046 +int vx_migrate_user(struct task_struct *p, struct vx_info *vxi)
15047 +{
15048 +       struct user_struct *new_user, *old_user;
15049 +
15050 +       if (!p || !vxi)
15051 +               BUG();
15052 +
15053 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0))
15054 +               return -EACCES;
15055 +
15056 +       new_user = alloc_uid(vxi->vx_id, p->uid);
15057 +       if (!new_user)
15058 +               return -ENOMEM;
15059 +
15060 +       old_user = p->user;
15061 +       if (new_user != old_user) {
15062 +               atomic_inc(&new_user->processes);
15063 +               atomic_dec(&old_user->processes);
15064 +               p->user = new_user;
15065 +       }
15066 +       free_uid(old_user);
15067 +       return 0;
15068 +}
15069 +#endif
15070 +
15071 +#if 0
15072 +void vx_mask_cap_bset(struct vx_info *vxi, struct task_struct *p)
15073 +{
15074 +       // p->cap_effective &= vxi->vx_cap_bset;
15075 +       p->cap_effective =
15076 +               cap_intersect(p->cap_effective, vxi->cap_bset);
15077 +       // p->cap_inheritable &= vxi->vx_cap_bset;
15078 +       p->cap_inheritable =
15079 +               cap_intersect(p->cap_inheritable, vxi->cap_bset);
15080 +       // p->cap_permitted &= vxi->vx_cap_bset;
15081 +       p->cap_permitted =
15082 +               cap_intersect(p->cap_permitted, vxi->cap_bset);
15083 +}
15084 +#endif
15085 +
15086 +
15087 +#include <linux/file.h>
15088 +#include <linux/fdtable.h>
15089 +
15090 +static int vx_openfd_task(struct task_struct *tsk)
15091 +{
15092 +       struct files_struct *files = tsk->files;
15093 +       struct fdtable *fdt;
15094 +       const unsigned long *bptr;
15095 +       int count, total;
15096 +
15097 +       /* no rcu_read_lock() because of spin_lock() */
15098 +       spin_lock(&files->file_lock);
15099 +       fdt = files_fdtable(files);
15100 +       bptr = fdt->open_fds;
15101 +       count = fdt->max_fds / (sizeof(unsigned long) * 8);
15102 +       for (total = 0; count > 0; count--) {
15103 +               if (*bptr)
15104 +                       total += hweight_long(*bptr);
15105 +               bptr++;
15106 +       }
15107 +       spin_unlock(&files->file_lock);
15108 +       return total;
15109 +}
15110 +
15111 +
15112 +/*     for *space compatibility */
15113 +
15114 +asmlinkage long sys_unshare(unsigned long);
15115 +
15116 +/*
15117 + *     migrate task to new context
15118 + *     gets vxi, puts old_vxi on change
15119 + *     optionally unshares namespaces (hack)
15120 + */
15121 +
15122 +int vx_migrate_task(struct task_struct *p, struct vx_info *vxi, int unshare)
15123 +{
15124 +       struct vx_info *old_vxi;
15125 +       int ret = 0;
15126 +
15127 +       if (!p || !vxi)
15128 +               BUG();
15129 +
15130 +       vxdprintk(VXD_CBIT(xid, 5),
15131 +               "vx_migrate_task(%p,%p[#%d.%d])", p, vxi,
15132 +               vxi->vx_id, atomic_read(&vxi->vx_usecnt));
15133 +
15134 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0) &&
15135 +               !vx_info_flags(vxi, VXF_STATE_SETUP, 0))
15136 +               return -EACCES;
15137 +
15138 +       if (vx_info_state(vxi, VXS_SHUTDOWN))
15139 +               return -EFAULT;
15140 +
15141 +       old_vxi = task_get_vx_info(p);
15142 +       if (old_vxi == vxi)
15143 +               goto out;
15144 +
15145 +//     if (!(ret = vx_migrate_user(p, vxi))) {
15146 +       {
15147 +               int openfd;
15148 +
15149 +               task_lock(p);
15150 +               openfd = vx_openfd_task(p);
15151 +
15152 +               if (old_vxi) {
15153 +                       atomic_dec(&old_vxi->cvirt.nr_threads);
15154 +                       atomic_dec(&old_vxi->cvirt.nr_running);
15155 +                       __rlim_dec(&old_vxi->limit, RLIMIT_NPROC);
15156 +                       /* FIXME: what about the struct files here? */
15157 +                       __rlim_sub(&old_vxi->limit, VLIMIT_OPENFD, openfd);
15158 +                       /* account for the executable */
15159 +                       __rlim_dec(&old_vxi->limit, VLIMIT_DENTRY);
15160 +               }
15161 +               atomic_inc(&vxi->cvirt.nr_threads);
15162 +               atomic_inc(&vxi->cvirt.nr_running);
15163 +               __rlim_inc(&vxi->limit, RLIMIT_NPROC);
15164 +               /* FIXME: what about the struct files here? */
15165 +               __rlim_add(&vxi->limit, VLIMIT_OPENFD, openfd);
15166 +               /* account for the executable */
15167 +               __rlim_inc(&vxi->limit, VLIMIT_DENTRY);
15168 +
15169 +               if (old_vxi) {
15170 +                       release_vx_info(old_vxi, p);
15171 +                       clr_vx_info(&p->vx_info);
15172 +               }
15173 +               claim_vx_info(vxi, p);
15174 +               set_vx_info(&p->vx_info, vxi);
15175 +               p->xid = vxi->vx_id;
15176 +
15177 +               vxdprintk(VXD_CBIT(xid, 5),
15178 +                       "moved task %p into vxi:%p[#%d]",
15179 +                       p, vxi, vxi->vx_id);
15180 +
15181 +               // vx_mask_cap_bset(vxi, p);
15182 +               task_unlock(p);
15183 +
15184 +               /* hack for *spaces to provide compatibility */
15185 +               if (unshare) {
15186 +                       struct nsproxy *old_nsp, *new_nsp;
15187 +
15188 +                       ret = unshare_nsproxy_namespaces(
15189 +                               CLONE_NEWUTS | CLONE_NEWIPC | CLONE_NEWUSER,
15190 +                               &new_nsp, NULL, NULL);
15191 +                       if (ret)
15192 +                               goto out;
15193 +
15194 +                       old_nsp = xchg(&p->nsproxy, new_nsp);
15195 +                       vx_set_space(vxi,
15196 +                               CLONE_NEWUTS | CLONE_NEWIPC | CLONE_NEWUSER, 0);
15197 +                       put_nsproxy(old_nsp);
15198 +               }
15199 +       }
15200 +out:
15201 +       put_vx_info(old_vxi);
15202 +       return ret;
15203 +}
15204 +
15205 +int vx_set_reaper(struct vx_info *vxi, struct task_struct *p)
15206 +{
15207 +       struct task_struct *old_reaper;
15208 +       struct vx_info *reaper_vxi;
15209 +
15210 +       if (!vxi)
15211 +               return -EINVAL;
15212 +
15213 +       vxdprintk(VXD_CBIT(xid, 6),
15214 +               "vx_set_reaper(%p[#%d],%p[#%d,%d])",
15215 +               vxi, vxi->vx_id, p, p->xid, p->pid);
15216 +
15217 +       old_reaper = vxi->vx_reaper;
15218 +       if (old_reaper == p)
15219 +               return 0;
15220 +
15221 +       reaper_vxi = task_get_vx_info(p);
15222 +       if (reaper_vxi && reaper_vxi != vxi) {
15223 +               vxwprintk(1,
15224 +                       "Unsuitable reaper [" VS_Q("%s") ",%u:#%u] "
15225 +                       "for [xid #%u]",
15226 +                       p->comm, p->pid, p->xid, vx_current_xid());
15227 +               goto out;
15228 +       }
15229 +
15230 +       /* set new child reaper */
15231 +       get_task_struct(p);
15232 +       vxi->vx_reaper = p;
15233 +       put_task_struct(old_reaper);
15234 +out:
15235 +       put_vx_info(reaper_vxi);
15236 +       return 0;
15237 +}
15238 +
15239 +int vx_set_init(struct vx_info *vxi, struct task_struct *p)
15240 +{
15241 +       if (!vxi)
15242 +               return -EINVAL;
15243 +
15244 +       vxdprintk(VXD_CBIT(xid, 6),
15245 +               "vx_set_init(%p[#%d],%p[#%d,%d,%d])",
15246 +               vxi, vxi->vx_id, p, p->xid, p->pid, p->tgid);
15247 +
15248 +       vxi->vx_flags &= ~VXF_STATE_INIT;
15249 +       // vxi->vx_initpid = p->tgid;
15250 +       vxi->vx_initpid = p->pid;
15251 +       return 0;
15252 +}
15253 +
15254 +void vx_exit_init(struct vx_info *vxi, struct task_struct *p, int code)
15255 +{
15256 +       vxdprintk(VXD_CBIT(xid, 6),
15257 +               "vx_exit_init(%p[#%d],%p[#%d,%d,%d])",
15258 +               vxi, vxi->vx_id, p, p->xid, p->pid, p->tgid);
15259 +
15260 +       vxi->exit_code = code;
15261 +       vxi->vx_initpid = 0;
15262 +}
15263 +
15264 +
15265 +void vx_set_persistent(struct vx_info *vxi)
15266 +{
15267 +       vxdprintk(VXD_CBIT(xid, 6),
15268 +               "vx_set_persistent(%p[#%d])", vxi, vxi->vx_id);
15269 +
15270 +       get_vx_info(vxi);
15271 +       claim_vx_info(vxi, NULL);
15272 +}
15273 +
15274 +void vx_clear_persistent(struct vx_info *vxi)
15275 +{
15276 +       vxdprintk(VXD_CBIT(xid, 6),
15277 +               "vx_clear_persistent(%p[#%d])", vxi, vxi->vx_id);
15278 +
15279 +       release_vx_info(vxi, NULL);
15280 +       put_vx_info(vxi);
15281 +}
15282 +
15283 +void vx_update_persistent(struct vx_info *vxi)
15284 +{
15285 +       if (vx_info_flags(vxi, VXF_PERSISTENT, 0))
15286 +               vx_set_persistent(vxi);
15287 +       else
15288 +               vx_clear_persistent(vxi);
15289 +}
15290 +
15291 +
15292 +/*     task must be current or locked          */
15293 +
15294 +void   exit_vx_info(struct task_struct *p, int code)
15295 +{
15296 +       struct vx_info *vxi = p->vx_info;
15297 +
15298 +       if (vxi) {
15299 +               atomic_dec(&vxi->cvirt.nr_threads);
15300 +               vx_nproc_dec(p);
15301 +
15302 +               vxi->exit_code = code;
15303 +               release_vx_info(vxi, p);
15304 +       }
15305 +}
15306 +
15307 +void   exit_vx_info_early(struct task_struct *p, int code)
15308 +{
15309 +       struct vx_info *vxi = p->vx_info;
15310 +
15311 +       if (vxi) {
15312 +               if (vxi->vx_initpid == p->pid)
15313 +                       vx_exit_init(vxi, p, code);
15314 +               if (vxi->vx_reaper == p)
15315 +                       vx_set_reaper(vxi, init_pid_ns.child_reaper);
15316 +       }
15317 +}
15318 +
15319 +
15320 +/* vserver syscall commands below here */
15321 +
15322 +/* taks xid and vx_info functions */
15323 +
15324 +#include <asm/uaccess.h>
15325 +
15326 +
15327 +int vc_task_xid(uint32_t id)
15328 +{
15329 +       vxid_t xid;
15330 +
15331 +       if (id) {
15332 +               struct task_struct *tsk;
15333 +
15334 +               rcu_read_lock();
15335 +               tsk = find_task_by_real_pid(id);
15336 +               xid = (tsk) ? tsk->xid : -ESRCH;
15337 +               rcu_read_unlock();
15338 +       } else
15339 +               xid = vx_current_xid();
15340 +       return xid;
15341 +}
15342 +
15343 +
15344 +int vc_vx_info(struct vx_info *vxi, void __user *data)
15345 +{
15346 +       struct vcmd_vx_info_v0 vc_data;
15347 +
15348 +       vc_data.xid = vxi->vx_id;
15349 +       vc_data.initpid = vxi->vx_initpid;
15350 +
15351 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15352 +               return -EFAULT;
15353 +       return 0;
15354 +}
15355 +
15356 +
15357 +int vc_ctx_stat(struct vx_info *vxi, void __user *data)
15358 +{
15359 +       struct vcmd_ctx_stat_v0 vc_data;
15360 +
15361 +       vc_data.usecnt = atomic_read(&vxi->vx_usecnt);
15362 +       vc_data.tasks = atomic_read(&vxi->vx_tasks);
15363 +
15364 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15365 +               return -EFAULT;
15366 +       return 0;
15367 +}
15368 +
15369 +
15370 +/* context functions */
15371 +
15372 +int vc_ctx_create(uint32_t xid, void __user *data)
15373 +{
15374 +       struct vcmd_ctx_create vc_data = { .flagword = VXF_INIT_SET };
15375 +       struct vx_info *new_vxi;
15376 +       int ret;
15377 +
15378 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
15379 +               return -EFAULT;
15380 +
15381 +       if ((xid > MAX_S_CONTEXT) || (xid < 2))
15382 +               return -EINVAL;
15383 +
15384 +       new_vxi = __create_vx_info(xid);
15385 +       if (IS_ERR(new_vxi))
15386 +               return PTR_ERR(new_vxi);
15387 +
15388 +       /* initial flags */
15389 +       new_vxi->vx_flags = vc_data.flagword;
15390 +
15391 +       ret = -ENOEXEC;
15392 +       if (vs_state_change(new_vxi, VSC_STARTUP))
15393 +               goto out;
15394 +
15395 +       ret = vx_migrate_task(current, new_vxi, (!data));
15396 +       if (ret)
15397 +               goto out;
15398 +
15399 +       /* return context id on success */
15400 +       ret = new_vxi->vx_id;
15401 +
15402 +       /* get a reference for persistent contexts */
15403 +       if ((vc_data.flagword & VXF_PERSISTENT))
15404 +               vx_set_persistent(new_vxi);
15405 +out:
15406 +       release_vx_info(new_vxi, NULL);
15407 +       put_vx_info(new_vxi);
15408 +       return ret;
15409 +}
15410 +
15411 +
15412 +int vc_ctx_migrate(struct vx_info *vxi, void __user *data)
15413 +{
15414 +       struct vcmd_ctx_migrate vc_data = { .flagword = 0 };
15415 +       int ret;
15416 +
15417 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
15418 +               return -EFAULT;
15419 +
15420 +       ret = vx_migrate_task(current, vxi, 0);
15421 +       if (ret)
15422 +               return ret;
15423 +       if (vc_data.flagword & VXM_SET_INIT)
15424 +               ret = vx_set_init(vxi, current);
15425 +       if (ret)
15426 +               return ret;
15427 +       if (vc_data.flagword & VXM_SET_REAPER)
15428 +               ret = vx_set_reaper(vxi, current);
15429 +       return ret;
15430 +}
15431 +
15432 +
15433 +int vc_get_cflags(struct vx_info *vxi, void __user *data)
15434 +{
15435 +       struct vcmd_ctx_flags_v0 vc_data;
15436 +
15437 +       vc_data.flagword = vxi->vx_flags;
15438 +
15439 +       /* special STATE flag handling */
15440 +       vc_data.mask = vs_mask_flags(~0ULL, vxi->vx_flags, VXF_ONE_TIME);
15441 +
15442 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15443 +               return -EFAULT;
15444 +       return 0;
15445 +}
15446 +
15447 +int vc_set_cflags(struct vx_info *vxi, void __user *data)
15448 +{
15449 +       struct vcmd_ctx_flags_v0 vc_data;
15450 +       uint64_t mask, trigger;
15451 +
15452 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15453 +               return -EFAULT;
15454 +
15455 +       /* special STATE flag handling */
15456 +       mask = vs_mask_mask(vc_data.mask, vxi->vx_flags, VXF_ONE_TIME);
15457 +       trigger = (mask & vxi->vx_flags) ^ (mask & vc_data.flagword);
15458 +
15459 +       if (vxi == current_vx_info()) {
15460 +               /* if (trigger & VXF_STATE_SETUP)
15461 +                       vx_mask_cap_bset(vxi, current); */
15462 +               if (trigger & VXF_STATE_INIT) {
15463 +                       int ret;
15464 +
15465 +                       ret = vx_set_init(vxi, current);
15466 +                       if (ret)
15467 +                               return ret;
15468 +                       ret = vx_set_reaper(vxi, current);
15469 +                       if (ret)
15470 +                               return ret;
15471 +               }
15472 +       }
15473 +
15474 +       vxi->vx_flags = vs_mask_flags(vxi->vx_flags,
15475 +               vc_data.flagword, mask);
15476 +       if (trigger & VXF_PERSISTENT)
15477 +               vx_update_persistent(vxi);
15478 +
15479 +       return 0;
15480 +}
15481 +
15482 +
15483 +static inline uint64_t caps_from_cap_t(kernel_cap_t c)
15484 +{
15485 +       uint64_t v = c.cap[0] | ((uint64_t)c.cap[1] << 32);
15486 +
15487 +       // printk("caps_from_cap_t(%08x:%08x) = %016llx\n", c.cap[1], c.cap[0], v);
15488 +       return v;
15489 +}
15490 +
15491 +static inline kernel_cap_t cap_t_from_caps(uint64_t v)
15492 +{
15493 +       kernel_cap_t c = __cap_empty_set;
15494 +
15495 +       c.cap[0] = v & 0xFFFFFFFF;
15496 +       c.cap[1] = (v >> 32) & 0xFFFFFFFF;
15497 +
15498 +       // printk("cap_t_from_caps(%016llx) = %08x:%08x\n", v, c.cap[1], c.cap[0]);
15499 +       return c;
15500 +}
15501 +
15502 +
15503 +static int do_get_caps(struct vx_info *vxi, uint64_t *bcaps, uint64_t *ccaps)
15504 +{
15505 +       if (bcaps)
15506 +               *bcaps = caps_from_cap_t(vxi->vx_bcaps);
15507 +       if (ccaps)
15508 +               *ccaps = vxi->vx_ccaps;
15509 +
15510 +       return 0;
15511 +}
15512 +
15513 +int vc_get_ccaps(struct vx_info *vxi, void __user *data)
15514 +{
15515 +       struct vcmd_ctx_caps_v1 vc_data;
15516 +       int ret;
15517 +
15518 +       ret = do_get_caps(vxi, NULL, &vc_data.ccaps);
15519 +       if (ret)
15520 +               return ret;
15521 +       vc_data.cmask = ~0ULL;
15522 +
15523 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15524 +               return -EFAULT;
15525 +       return 0;
15526 +}
15527 +
15528 +static int do_set_caps(struct vx_info *vxi,
15529 +       uint64_t bcaps, uint64_t bmask, uint64_t ccaps, uint64_t cmask)
15530 +{
15531 +       uint64_t bcold = caps_from_cap_t(vxi->vx_bcaps);
15532 +
15533 +#if 0
15534 +       printk("do_set_caps(%16llx, %16llx, %16llx, %16llx)\n",
15535 +               bcaps, bmask, ccaps, cmask);
15536 +#endif
15537 +       vxi->vx_bcaps = cap_t_from_caps(
15538 +               vs_mask_flags(bcold, bcaps, bmask));
15539 +       vxi->vx_ccaps = vs_mask_flags(vxi->vx_ccaps, ccaps, cmask);
15540 +
15541 +       return 0;
15542 +}
15543 +
15544 +int vc_set_ccaps(struct vx_info *vxi, void __user *data)
15545 +{
15546 +       struct vcmd_ctx_caps_v1 vc_data;
15547 +
15548 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15549 +               return -EFAULT;
15550 +
15551 +       return do_set_caps(vxi, 0, 0, vc_data.ccaps, vc_data.cmask);
15552 +}
15553 +
15554 +int vc_get_bcaps(struct vx_info *vxi, void __user *data)
15555 +{
15556 +       struct vcmd_bcaps vc_data;
15557 +       int ret;
15558 +
15559 +       ret = do_get_caps(vxi, &vc_data.bcaps, NULL);
15560 +       if (ret)
15561 +               return ret;
15562 +       vc_data.bmask = ~0ULL;
15563 +
15564 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15565 +               return -EFAULT;
15566 +       return 0;
15567 +}
15568 +
15569 +int vc_set_bcaps(struct vx_info *vxi, void __user *data)
15570 +{
15571 +       struct vcmd_bcaps vc_data;
15572 +
15573 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15574 +               return -EFAULT;
15575 +
15576 +       return do_set_caps(vxi, vc_data.bcaps, vc_data.bmask, 0, 0);
15577 +}
15578 +
15579 +
15580 +int vc_get_umask(struct vx_info *vxi, void __user *data)
15581 +{
15582 +       struct vcmd_umask vc_data;
15583 +
15584 +       vc_data.umask = vxi->vx_umask;
15585 +       vc_data.mask = ~0ULL;
15586 +
15587 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15588 +               return -EFAULT;
15589 +       return 0;
15590 +}
15591 +
15592 +int vc_set_umask(struct vx_info *vxi, void __user *data)
15593 +{
15594 +       struct vcmd_umask vc_data;
15595 +
15596 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15597 +               return -EFAULT;
15598 +
15599 +       vxi->vx_umask = vs_mask_flags(vxi->vx_umask,
15600 +               vc_data.umask, vc_data.mask);
15601 +       return 0;
15602 +}
15603 +
15604 +
15605 +int vc_get_wmask(struct vx_info *vxi, void __user *data)
15606 +{
15607 +       struct vcmd_wmask vc_data;
15608 +
15609 +       vc_data.wmask = vxi->vx_wmask;
15610 +       vc_data.mask = ~0ULL;
15611 +
15612 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15613 +               return -EFAULT;
15614 +       return 0;
15615 +}
15616 +
15617 +int vc_set_wmask(struct vx_info *vxi, void __user *data)
15618 +{
15619 +       struct vcmd_wmask vc_data;
15620 +
15621 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15622 +               return -EFAULT;
15623 +
15624 +       vxi->vx_wmask = vs_mask_flags(vxi->vx_wmask,
15625 +               vc_data.wmask, vc_data.mask);
15626 +       return 0;
15627 +}
15628 +
15629 +
15630 +int vc_get_badness(struct vx_info *vxi, void __user *data)
15631 +{
15632 +       struct vcmd_badness_v0 vc_data;
15633 +
15634 +       vc_data.bias = vxi->vx_badness_bias;
15635 +
15636 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15637 +               return -EFAULT;
15638 +       return 0;
15639 +}
15640 +
15641 +int vc_set_badness(struct vx_info *vxi, void __user *data)
15642 +{
15643 +       struct vcmd_badness_v0 vc_data;
15644 +
15645 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15646 +               return -EFAULT;
15647 +
15648 +       vxi->vx_badness_bias = vc_data.bias;
15649 +       return 0;
15650 +}
15651 +
15652 +#include <linux/module.h>
15653 +
15654 +EXPORT_SYMBOL_GPL(free_vx_info);
15655 +
15656 diff -NurpP --minimal linux-4.4.111/kernel/vserver/cvirt.c linux-4.4.111-vs2.3.9.5/kernel/vserver/cvirt.c
15657 --- linux-4.4.111/kernel/vserver/cvirt.c        1970-01-01 00:00:00.000000000 +0000
15658 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/cvirt.c      2018-01-09 22:27:39.000000000 +0000
15659 @@ -0,0 +1,313 @@
15660 +/*
15661 + *  linux/kernel/vserver/cvirt.c
15662 + *
15663 + *  Virtual Server: Context Virtualization
15664 + *
15665 + *  Copyright (C) 2004-2007  Herbert P?tzl
15666 + *
15667 + *  V0.01  broken out from limit.c
15668 + *  V0.02  added utsname stuff
15669 + *  V0.03  changed vcmds to vxi arg
15670 + *
15671 + */
15672 +
15673 +#include <linux/types.h>
15674 +#include <linux/utsname.h>
15675 +#include <linux/vs_cvirt.h>
15676 +#include <linux/vserver/switch.h>
15677 +#include <linux/vserver/cvirt_cmd.h>
15678 +
15679 +#include <asm/uaccess.h>
15680 +
15681 +
15682 +void vx_vsi_boottime(struct timespec *boottime)
15683 +{
15684 +       struct vx_info *vxi = current_vx_info();
15685 +
15686 +       set_normalized_timespec(boottime,
15687 +               boottime->tv_sec + vxi->cvirt.bias_uptime.tv_sec,
15688 +               boottime->tv_nsec + vxi->cvirt.bias_uptime.tv_nsec);
15689 +       return;
15690 +}
15691 +
15692 +void vx_vsi_uptime(struct timespec *uptime, struct timespec *idle)
15693 +{
15694 +       struct vx_info *vxi = current_vx_info();
15695 +
15696 +       set_normalized_timespec(uptime,
15697 +               uptime->tv_sec - vxi->cvirt.bias_uptime.tv_sec,
15698 +               uptime->tv_nsec - vxi->cvirt.bias_uptime.tv_nsec);
15699 +       if (!idle)
15700 +               return;
15701 +       set_normalized_timespec(idle,
15702 +               idle->tv_sec - vxi->cvirt.bias_idle.tv_sec,
15703 +               idle->tv_nsec - vxi->cvirt.bias_idle.tv_nsec);
15704 +       return;
15705 +}
15706 +
15707 +uint64_t vx_idle_jiffies(void)
15708 +{
15709 +       return init_task.utime + init_task.stime;
15710 +}
15711 +
15712 +
15713 +
15714 +static inline uint32_t __update_loadavg(uint32_t load,
15715 +       int wsize, int delta, int n)
15716 +{
15717 +       unsigned long long calc, prev;
15718 +
15719 +       /* just set it to n */
15720 +       if (unlikely(delta >= wsize))
15721 +               return (n << FSHIFT);
15722 +
15723 +       calc = delta * n;
15724 +       calc <<= FSHIFT;
15725 +       prev = (wsize - delta);
15726 +       prev *= load;
15727 +       calc += prev;
15728 +       do_div(calc, wsize);
15729 +       return calc;
15730 +}
15731 +
15732 +
15733 +void vx_update_load(struct vx_info *vxi)
15734 +{
15735 +       uint32_t now, last, delta;
15736 +       unsigned int nr_running, nr_uninterruptible;
15737 +       unsigned int total;
15738 +       unsigned long flags;
15739 +
15740 +       spin_lock_irqsave(&vxi->cvirt.load_lock, flags);
15741 +
15742 +       now = jiffies;
15743 +       last = vxi->cvirt.load_last;
15744 +       delta = now - last;
15745 +
15746 +       if (delta < 5*HZ)
15747 +               goto out;
15748 +
15749 +       nr_running = atomic_read(&vxi->cvirt.nr_running);
15750 +       nr_uninterruptible = atomic_read(&vxi->cvirt.nr_uninterruptible);
15751 +       total = nr_running + nr_uninterruptible;
15752 +
15753 +       vxi->cvirt.load[0] = __update_loadavg(vxi->cvirt.load[0],
15754 +               60*HZ, delta, total);
15755 +       vxi->cvirt.load[1] = __update_loadavg(vxi->cvirt.load[1],
15756 +               5*60*HZ, delta, total);
15757 +       vxi->cvirt.load[2] = __update_loadavg(vxi->cvirt.load[2],
15758 +               15*60*HZ, delta, total);
15759 +
15760 +       vxi->cvirt.load_last = now;
15761 +out:
15762 +       atomic_inc(&vxi->cvirt.load_updates);
15763 +       spin_unlock_irqrestore(&vxi->cvirt.load_lock, flags);
15764 +}
15765 +
15766 +
15767 +/*
15768 + * Commands to do_syslog:
15769 + *
15770 + *      0 -- Close the log.  Currently a NOP.
15771 + *      1 -- Open the log. Currently a NOP.
15772 + *      2 -- Read from the log.
15773 + *      3 -- Read all messages remaining in the ring buffer.
15774 + *      4 -- Read and clear all messages remaining in the ring buffer
15775 + *      5 -- Clear ring buffer.
15776 + *      6 -- Disable printk's to console
15777 + *      7 -- Enable printk's to console
15778 + *      8 -- Set level of messages printed to console
15779 + *      9 -- Return number of unread characters in the log buffer
15780 + *     10 -- Return size of the log buffer
15781 + */
15782 +int vx_do_syslog(int type, char __user *buf, int len)
15783 +{
15784 +       int error = 0;
15785 +       int do_clear = 0;
15786 +       struct vx_info *vxi = current_vx_info();
15787 +       struct _vx_syslog *log;
15788 +
15789 +       if (!vxi)
15790 +               return -EINVAL;
15791 +       log = &vxi->cvirt.syslog;
15792 +
15793 +       switch (type) {
15794 +       case 0:         /* Close log */
15795 +       case 1:         /* Open log */
15796 +               break;
15797 +       case 2:         /* Read from log */
15798 +               error = wait_event_interruptible(log->log_wait,
15799 +                       (log->log_start - log->log_end));
15800 +               if (error)
15801 +                       break;
15802 +               spin_lock_irq(&log->logbuf_lock);
15803 +               spin_unlock_irq(&log->logbuf_lock);
15804 +               break;
15805 +       case 4:         /* Read/clear last kernel messages */
15806 +               do_clear = 1;
15807 +               /* fall through */
15808 +       case 3:         /* Read last kernel messages */
15809 +               return 0;
15810 +
15811 +       case 5:         /* Clear ring buffer */
15812 +               return 0;
15813 +
15814 +       case 6:         /* Disable logging to console */
15815 +       case 7:         /* Enable logging to console */
15816 +       case 8:         /* Set level of messages printed to console */
15817 +               break;
15818 +
15819 +       case 9:         /* Number of chars in the log buffer */
15820 +               return 0;
15821 +       case 10:        /* Size of the log buffer */
15822 +               return 0;
15823 +       default:
15824 +               error = -EINVAL;
15825 +               break;
15826 +       }
15827 +       return error;
15828 +}
15829 +
15830 +
15831 +/* virtual host info names */
15832 +
15833 +static char *vx_vhi_name(struct vx_info *vxi, int id)
15834 +{
15835 +       struct nsproxy *nsproxy;
15836 +       struct uts_namespace *uts;
15837 +
15838 +       if (id == VHIN_CONTEXT)
15839 +               return vxi->vx_name;
15840 +
15841 +       nsproxy = vxi->space[0].vx_nsproxy;
15842 +       if (!nsproxy)
15843 +               return NULL;
15844 +
15845 +       uts = nsproxy->uts_ns;
15846 +       if (!uts)
15847 +               return NULL;
15848 +
15849 +       switch (id) {
15850 +       case VHIN_SYSNAME:
15851 +               return uts->name.sysname;
15852 +       case VHIN_NODENAME:
15853 +               return uts->name.nodename;
15854 +       case VHIN_RELEASE:
15855 +               return uts->name.release;
15856 +       case VHIN_VERSION:
15857 +               return uts->name.version;
15858 +       case VHIN_MACHINE:
15859 +               return uts->name.machine;
15860 +       case VHIN_DOMAINNAME:
15861 +               return uts->name.domainname;
15862 +       default:
15863 +               return NULL;
15864 +       }
15865 +       return NULL;
15866 +}
15867 +
15868 +int vc_set_vhi_name(struct vx_info *vxi, void __user *data)
15869 +{
15870 +       struct vcmd_vhi_name_v0 vc_data;
15871 +       char *name;
15872 +
15873 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15874 +               return -EFAULT;
15875 +
15876 +       name = vx_vhi_name(vxi, vc_data.field);
15877 +       if (!name)
15878 +               return -EINVAL;
15879 +
15880 +       memcpy(name, vc_data.name, 65);
15881 +       return 0;
15882 +}
15883 +
15884 +int vc_get_vhi_name(struct vx_info *vxi, void __user *data)
15885 +{
15886 +       struct vcmd_vhi_name_v0 vc_data;
15887 +       char *name;
15888 +
15889 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15890 +               return -EFAULT;
15891 +
15892 +       name = vx_vhi_name(vxi, vc_data.field);
15893 +       if (!name)
15894 +               return -EINVAL;
15895 +
15896 +       memcpy(vc_data.name, name, 65);
15897 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15898 +               return -EFAULT;
15899 +       return 0;
15900 +}
15901 +
15902 +
15903 +int vc_virt_stat(struct vx_info *vxi, void __user *data)
15904 +{
15905 +       struct vcmd_virt_stat_v0 vc_data;
15906 +       struct _vx_cvirt *cvirt = &vxi->cvirt;
15907 +       struct timespec uptime;
15908 +
15909 +       ktime_get_ts(&uptime);
15910 +       set_normalized_timespec(&uptime,
15911 +               uptime.tv_sec - cvirt->bias_uptime.tv_sec,
15912 +               uptime.tv_nsec - cvirt->bias_uptime.tv_nsec);
15913 +
15914 +       vc_data.offset = timespec_to_ns(&cvirt->bias_ts);
15915 +       vc_data.uptime = timespec_to_ns(&uptime);
15916 +       vc_data.nr_threads = atomic_read(&cvirt->nr_threads);
15917 +       vc_data.nr_running = atomic_read(&cvirt->nr_running);
15918 +       vc_data.nr_uninterruptible = atomic_read(&cvirt->nr_uninterruptible);
15919 +       vc_data.nr_onhold = atomic_read(&cvirt->nr_onhold);
15920 +       vc_data.nr_forks = atomic_read(&cvirt->total_forks);
15921 +       vc_data.load[0] = cvirt->load[0];
15922 +       vc_data.load[1] = cvirt->load[1];
15923 +       vc_data.load[2] = cvirt->load[2];
15924 +
15925 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15926 +               return -EFAULT;
15927 +       return 0;
15928 +}
15929 +
15930 +
15931 +#ifdef CONFIG_VSERVER_VTIME
15932 +
15933 +/* virtualized time base */
15934 +
15935 +void vx_adjust_timespec(struct timespec *ts)
15936 +{
15937 +       struct vx_info *vxi;
15938 +
15939 +       if (!vx_flags(VXF_VIRT_TIME, 0))
15940 +               return;
15941 +
15942 +       vxi = current_vx_info();
15943 +       ts->tv_sec += vxi->cvirt.bias_ts.tv_sec;
15944 +       ts->tv_nsec += vxi->cvirt.bias_ts.tv_nsec;
15945 +
15946 +       if (ts->tv_nsec >= NSEC_PER_SEC) {
15947 +               ts->tv_sec++;
15948 +               ts->tv_nsec -= NSEC_PER_SEC;
15949 +       } else if (ts->tv_nsec < 0) {
15950 +               ts->tv_sec--;
15951 +               ts->tv_nsec += NSEC_PER_SEC;
15952 +       }
15953 +}
15954 +
15955 +int vx_settimeofday(const struct timespec *ts)
15956 +{
15957 +       struct timespec ats, delta;
15958 +       struct vx_info *vxi;
15959 +
15960 +       if (!vx_flags(VXF_VIRT_TIME, 0))
15961 +               return do_settimeofday(ts);
15962 +
15963 +       getnstimeofday(&ats);
15964 +       delta = timespec_sub(*ts, ats);
15965 +
15966 +       vxi = current_vx_info();
15967 +       vxi->cvirt.bias_ts = timespec_add(vxi->cvirt.bias_ts, delta);
15968 +       return 0;
15969 +}
15970 +
15971 +#endif
15972 +
15973 diff -NurpP --minimal linux-4.4.111/kernel/vserver/cvirt_init.h linux-4.4.111-vs2.3.9.5/kernel/vserver/cvirt_init.h
15974 --- linux-4.4.111/kernel/vserver/cvirt_init.h   1970-01-01 00:00:00.000000000 +0000
15975 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/cvirt_init.h 2018-01-09 22:16:00.000000000 +0000
15976 @@ -0,0 +1,70 @@
15977 +
15978 +
15979 +extern uint64_t vx_idle_jiffies(void);
15980 +
15981 +static inline void vx_info_init_cvirt(struct _vx_cvirt *cvirt)
15982 +{
15983 +       uint64_t idle_jiffies = vx_idle_jiffies();
15984 +       uint64_t nsuptime;
15985 +
15986 +       ktime_get_ts(&cvirt->bias_uptime);
15987 +       nsuptime = (unsigned long long)cvirt->bias_uptime.tv_sec
15988 +               * NSEC_PER_SEC + cvirt->bias_uptime.tv_nsec;
15989 +       cvirt->bias_clock = nsec_to_clock_t(nsuptime);
15990 +       cvirt->bias_ts.tv_sec = 0;
15991 +       cvirt->bias_ts.tv_nsec = 0;
15992 +
15993 +       jiffies_to_timespec(idle_jiffies, &cvirt->bias_idle);
15994 +       atomic_set(&cvirt->nr_threads, 0);
15995 +       atomic_set(&cvirt->nr_running, 0);
15996 +       atomic_set(&cvirt->nr_uninterruptible, 0);
15997 +       atomic_set(&cvirt->nr_onhold, 0);
15998 +
15999 +       spin_lock_init(&cvirt->load_lock);
16000 +       cvirt->load_last = jiffies;
16001 +       atomic_set(&cvirt->load_updates, 0);
16002 +       cvirt->load[0] = 0;
16003 +       cvirt->load[1] = 0;
16004 +       cvirt->load[2] = 0;
16005 +       atomic_set(&cvirt->total_forks, 0);
16006 +
16007 +       spin_lock_init(&cvirt->syslog.logbuf_lock);
16008 +       init_waitqueue_head(&cvirt->syslog.log_wait);
16009 +       cvirt->syslog.log_start = 0;
16010 +       cvirt->syslog.log_end = 0;
16011 +       cvirt->syslog.con_start = 0;
16012 +       cvirt->syslog.logged_chars = 0;
16013 +}
16014 +
16015 +static inline
16016 +void vx_info_init_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc, int cpu)
16017 +{
16018 +       // cvirt_pc->cpustat = { 0 };
16019 +}
16020 +
16021 +static inline void vx_info_exit_cvirt(struct _vx_cvirt *cvirt)
16022 +{
16023 +#ifdef CONFIG_VSERVER_WARN
16024 +       int value;
16025 +#endif
16026 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_threads)),
16027 +               "!!! cvirt: %p[nr_threads] = %d on exit.",
16028 +               cvirt, value);
16029 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_running)),
16030 +               "!!! cvirt: %p[nr_running] = %d on exit.",
16031 +               cvirt, value);
16032 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_uninterruptible)),
16033 +               "!!! cvirt: %p[nr_uninterruptible] = %d on exit.",
16034 +               cvirt, value);
16035 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_onhold)),
16036 +               "!!! cvirt: %p[nr_onhold] = %d on exit.",
16037 +               cvirt, value);
16038 +       return;
16039 +}
16040 +
16041 +static inline
16042 +void vx_info_exit_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc, int cpu)
16043 +{
16044 +       return;
16045 +}
16046 +
16047 diff -NurpP --minimal linux-4.4.111/kernel/vserver/cvirt_proc.h linux-4.4.111-vs2.3.9.5/kernel/vserver/cvirt_proc.h
16048 --- linux-4.4.111/kernel/vserver/cvirt_proc.h   1970-01-01 00:00:00.000000000 +0000
16049 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/cvirt_proc.h 2018-01-09 16:36:34.000000000 +0000
16050 @@ -0,0 +1,123 @@
16051 +#ifndef _VX_CVIRT_PROC_H
16052 +#define _VX_CVIRT_PROC_H
16053 +
16054 +#include <linux/nsproxy.h>
16055 +#include <linux/mnt_namespace.h>
16056 +#include <linux/ipc_namespace.h>
16057 +#include <linux/utsname.h>
16058 +#include <linux/ipc.h>
16059 +
16060 +extern int vx_info_mnt_namespace(struct mnt_namespace *, char *);
16061 +
16062 +static inline
16063 +int vx_info_proc_nsproxy(struct nsproxy *nsproxy, char *buffer)
16064 +{
16065 +       struct mnt_namespace *ns;
16066 +       struct uts_namespace *uts;
16067 +       struct ipc_namespace *ipc;
16068 +       int length = 0;
16069 +
16070 +       if (!nsproxy)
16071 +               goto out;
16072 +
16073 +       length += sprintf(buffer + length,
16074 +               "NSProxy:\t%p [%p,%p,%p]\n",
16075 +               nsproxy, nsproxy->mnt_ns,
16076 +               nsproxy->uts_ns, nsproxy->ipc_ns);
16077 +
16078 +       ns = nsproxy->mnt_ns;
16079 +       if (!ns)
16080 +               goto skip_ns;
16081 +
16082 +       length += vx_info_mnt_namespace(ns, buffer + length);
16083 +
16084 +skip_ns:
16085 +
16086 +       uts = nsproxy->uts_ns;
16087 +       if (!uts)
16088 +               goto skip_uts;
16089 +
16090 +       length += sprintf(buffer + length,
16091 +               "SysName:\t%.*s\n"
16092 +               "NodeName:\t%.*s\n"
16093 +               "Release:\t%.*s\n"
16094 +               "Version:\t%.*s\n"
16095 +               "Machine:\t%.*s\n"
16096 +               "DomainName:\t%.*s\n",
16097 +               __NEW_UTS_LEN, uts->name.sysname,
16098 +               __NEW_UTS_LEN, uts->name.nodename,
16099 +               __NEW_UTS_LEN, uts->name.release,
16100 +               __NEW_UTS_LEN, uts->name.version,
16101 +               __NEW_UTS_LEN, uts->name.machine,
16102 +               __NEW_UTS_LEN, uts->name.domainname);
16103 +skip_uts:
16104 +
16105 +       ipc = nsproxy->ipc_ns;
16106 +       if (!ipc)
16107 +               goto skip_ipc;
16108 +
16109 +       length += sprintf(buffer + length,
16110 +               "SEMS:\t\t%d %d %d %d  %d\n"
16111 +               "MSG:\t\t%d %d %d\n"
16112 +               "SHM:\t\t%lu %lu  %d %ld\n",
16113 +               ipc->sem_ctls[0], ipc->sem_ctls[1],
16114 +               ipc->sem_ctls[2], ipc->sem_ctls[3],
16115 +               ipc->used_sems,
16116 +               ipc->msg_ctlmax, ipc->msg_ctlmnb, ipc->msg_ctlmni,
16117 +               (unsigned long)ipc->shm_ctlmax,
16118 +               (unsigned long)ipc->shm_ctlall,
16119 +               ipc->shm_ctlmni, ipc->shm_tot);
16120 +skip_ipc:
16121 +out:
16122 +       return length;
16123 +}
16124 +
16125 +
16126 +#include <linux/sched.h>
16127 +
16128 +#define LOAD_INT(x) ((x) >> FSHIFT)
16129 +#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1 - 1)) * 100)
16130 +
16131 +static inline
16132 +int vx_info_proc_cvirt(struct _vx_cvirt *cvirt, char *buffer)
16133 +{
16134 +       int length = 0;
16135 +       int a, b, c;
16136 +
16137 +       length += sprintf(buffer + length,
16138 +               "BiasUptime:\t%lu.%02lu\n",
16139 +               (unsigned long)cvirt->bias_uptime.tv_sec,
16140 +               (cvirt->bias_uptime.tv_nsec / (NSEC_PER_SEC / 100)));
16141 +
16142 +       a = cvirt->load[0] + (FIXED_1 / 200);
16143 +       b = cvirt->load[1] + (FIXED_1 / 200);
16144 +       c = cvirt->load[2] + (FIXED_1 / 200);
16145 +       length += sprintf(buffer + length,
16146 +               "nr_threads:\t%d\n"
16147 +               "nr_running:\t%d\n"
16148 +               "nr_unintr:\t%d\n"
16149 +               "nr_onhold:\t%d\n"
16150 +               "load_updates:\t%d\n"
16151 +               "loadavg:\t%d.%02d %d.%02d %d.%02d\n"
16152 +               "total_forks:\t%d\n",
16153 +               atomic_read(&cvirt->nr_threads),
16154 +               atomic_read(&cvirt->nr_running),
16155 +               atomic_read(&cvirt->nr_uninterruptible),
16156 +               atomic_read(&cvirt->nr_onhold),
16157 +               atomic_read(&cvirt->load_updates),
16158 +               LOAD_INT(a), LOAD_FRAC(a),
16159 +               LOAD_INT(b), LOAD_FRAC(b),
16160 +               LOAD_INT(c), LOAD_FRAC(c),
16161 +               atomic_read(&cvirt->total_forks));
16162 +       return length;
16163 +}
16164 +
16165 +static inline
16166 +int vx_info_proc_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc,
16167 +       char *buffer, int cpu)
16168 +{
16169 +       int length = 0;
16170 +       return length;
16171 +}
16172 +
16173 +#endif /* _VX_CVIRT_PROC_H */
16174 diff -NurpP --minimal linux-4.4.111/kernel/vserver/debug.c linux-4.4.111-vs2.3.9.5/kernel/vserver/debug.c
16175 --- linux-4.4.111/kernel/vserver/debug.c        1970-01-01 00:00:00.000000000 +0000
16176 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/debug.c      2018-01-09 16:36:34.000000000 +0000
16177 @@ -0,0 +1,32 @@
16178 +/*
16179 + *  kernel/vserver/debug.c
16180 + *
16181 + *  Copyright (C) 2005-2007 Herbert P?tzl
16182 + *
16183 + *  V0.01  vx_info dump support
16184 + *
16185 + */
16186 +
16187 +#include <linux/module.h>
16188 +
16189 +#include <linux/vserver/context.h>
16190 +
16191 +
16192 +void   dump_vx_info(struct vx_info *vxi, int level)
16193 +{
16194 +       printk("vx_info %p[#%d, %d.%d, %4x]\n", vxi, vxi->vx_id,
16195 +               atomic_read(&vxi->vx_usecnt),
16196 +               atomic_read(&vxi->vx_tasks),
16197 +               vxi->vx_state);
16198 +       if (level > 0) {
16199 +               __dump_vx_limit(&vxi->limit);
16200 +               __dump_vx_sched(&vxi->sched);
16201 +               __dump_vx_cvirt(&vxi->cvirt);
16202 +               __dump_vx_cacct(&vxi->cacct);
16203 +       }
16204 +       printk("---\n");
16205 +}
16206 +
16207 +
16208 +EXPORT_SYMBOL_GPL(dump_vx_info);
16209 +
16210 diff -NurpP --minimal linux-4.4.111/kernel/vserver/device.c linux-4.4.111-vs2.3.9.5/kernel/vserver/device.c
16211 --- linux-4.4.111/kernel/vserver/device.c       1970-01-01 00:00:00.000000000 +0000
16212 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/device.c     2018-01-09 16:36:34.000000000 +0000
16213 @@ -0,0 +1,443 @@
16214 +/*
16215 + *  linux/kernel/vserver/device.c
16216 + *
16217 + *  Linux-VServer: Device Support
16218 + *
16219 + *  Copyright (C) 2006  Herbert P?tzl
16220 + *  Copyright (C) 2007  Daniel Hokka Zakrisson
16221 + *
16222 + *  V0.01  device mapping basics
16223 + *  V0.02  added defaults
16224 + *
16225 + */
16226 +
16227 +#include <linux/slab.h>
16228 +#include <linux/rcupdate.h>
16229 +#include <linux/fs.h>
16230 +#include <linux/namei.h>
16231 +#include <linux/hash.h>
16232 +
16233 +#include <asm/errno.h>
16234 +#include <asm/uaccess.h>
16235 +#include <linux/vserver/base.h>
16236 +#include <linux/vserver/debug.h>
16237 +#include <linux/vserver/context.h>
16238 +#include <linux/vserver/device.h>
16239 +#include <linux/vserver/device_cmd.h>
16240 +
16241 +
16242 +#define DMAP_HASH_BITS 4
16243 +
16244 +
16245 +struct vs_mapping {
16246 +       union {
16247 +               struct hlist_node hlist;
16248 +               struct list_head list;
16249 +       } u;
16250 +#define dm_hlist       u.hlist
16251 +#define dm_list                u.list
16252 +       vxid_t xid;
16253 +       dev_t device;
16254 +       struct vx_dmap_target target;
16255 +};
16256 +
16257 +
16258 +static struct hlist_head dmap_main_hash[1 << DMAP_HASH_BITS];
16259 +
16260 +static DEFINE_SPINLOCK(dmap_main_hash_lock);
16261 +
16262 +static struct vx_dmap_target dmap_defaults[2] = {
16263 +       { .flags = DATTR_OPEN },
16264 +       { .flags = DATTR_OPEN },
16265 +};
16266 +
16267 +
16268 +struct kmem_cache *dmap_cachep __read_mostly;
16269 +
16270 +int __init dmap_cache_init(void)
16271 +{
16272 +       dmap_cachep = kmem_cache_create("dmap_cache",
16273 +               sizeof(struct vs_mapping), 0,
16274 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
16275 +       return 0;
16276 +}
16277 +
16278 +__initcall(dmap_cache_init);
16279 +
16280 +
16281 +static inline unsigned int __hashval(dev_t dev, int bits)
16282 +{
16283 +       return hash_long((unsigned long)dev, bits);
16284 +}
16285 +
16286 +
16287 +/*     __hash_mapping()
16288 + *     add the mapping to the hash table
16289 + */
16290 +static inline void __hash_mapping(struct vx_info *vxi, struct vs_mapping *vdm)
16291 +{
16292 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16293 +       struct hlist_head *head, *hash = dmap_main_hash;
16294 +       int device = vdm->device;
16295 +
16296 +       spin_lock(hash_lock);
16297 +       vxdprintk(VXD_CBIT(misc, 8), "__hash_mapping: %p[#%d] %08x:%08x",
16298 +               vxi, vxi ? vxi->vx_id : 0, device, vdm->target.target);
16299 +
16300 +       head = &hash[__hashval(device, DMAP_HASH_BITS)];
16301 +       hlist_add_head(&vdm->dm_hlist, head);
16302 +       spin_unlock(hash_lock);
16303 +}
16304 +
16305 +
16306 +static inline int __mode_to_default(umode_t mode)
16307 +{
16308 +       switch (mode) {
16309 +       case S_IFBLK:
16310 +               return 0;
16311 +       case S_IFCHR:
16312 +               return 1;
16313 +       default:
16314 +               BUG();
16315 +       }
16316 +}
16317 +
16318 +
16319 +/*     __set_default()
16320 + *     set a default
16321 + */
16322 +static inline void __set_default(struct vx_info *vxi, umode_t mode,
16323 +       struct vx_dmap_target *vdmt)
16324 +{
16325 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16326 +       spin_lock(hash_lock);
16327 +
16328 +       if (vxi)
16329 +               vxi->dmap.targets[__mode_to_default(mode)] = *vdmt;
16330 +       else
16331 +               dmap_defaults[__mode_to_default(mode)] = *vdmt;
16332 +
16333 +
16334 +       spin_unlock(hash_lock);
16335 +
16336 +       vxdprintk(VXD_CBIT(misc, 8), "__set_default: %p[#%u] %08x %04x",
16337 +                 vxi, vxi ? vxi->vx_id : 0, vdmt->target, vdmt->flags);
16338 +}
16339 +
16340 +
16341 +/*     __remove_default()
16342 + *     remove a default
16343 + */
16344 +static inline int __remove_default(struct vx_info *vxi, umode_t mode)
16345 +{
16346 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16347 +       spin_lock(hash_lock);
16348 +
16349 +       if (vxi)
16350 +               vxi->dmap.targets[__mode_to_default(mode)].flags = 0;
16351 +       else    /* remove == reset */
16352 +               dmap_defaults[__mode_to_default(mode)].flags = DATTR_OPEN | mode;
16353 +
16354 +       spin_unlock(hash_lock);
16355 +       return 0;
16356 +}
16357 +
16358 +
16359 +/*     __find_mapping()
16360 + *     find a mapping in the hash table
16361 + *
16362 + *     caller must hold hash_lock
16363 + */
16364 +static inline int __find_mapping(vxid_t xid, dev_t device, umode_t mode,
16365 +       struct vs_mapping **local, struct vs_mapping **global)
16366 +{
16367 +       struct hlist_head *hash = dmap_main_hash;
16368 +       struct hlist_head *head = &hash[__hashval(device, DMAP_HASH_BITS)];
16369 +       struct hlist_node *pos;
16370 +       struct vs_mapping *vdm;
16371 +
16372 +       *local = NULL;
16373 +       if (global)
16374 +               *global = NULL;
16375 +
16376 +       hlist_for_each(pos, head) {
16377 +               vdm = hlist_entry(pos, struct vs_mapping, dm_hlist);
16378 +
16379 +               if ((vdm->device == device) &&
16380 +                       !((vdm->target.flags ^ mode) & S_IFMT)) {
16381 +                       if (vdm->xid == xid) {
16382 +                               *local = vdm;
16383 +                               return 1;
16384 +                       } else if (global && vdm->xid == 0)
16385 +                               *global = vdm;
16386 +               }
16387 +       }
16388 +
16389 +       if (global && *global)
16390 +               return 0;
16391 +       else
16392 +               return -ENOENT;
16393 +}
16394 +
16395 +
16396 +/*     __lookup_mapping()
16397 + *     find a mapping and store the result in target and flags
16398 + */
16399 +static inline int __lookup_mapping(struct vx_info *vxi,
16400 +       dev_t device, dev_t *target, int *flags, umode_t mode)
16401 +{
16402 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16403 +       struct vs_mapping *vdm, *global;
16404 +       struct vx_dmap_target *vdmt;
16405 +       int ret = 0;
16406 +       vxid_t xid = vxi->vx_id;
16407 +       int index;
16408 +
16409 +       spin_lock(hash_lock);
16410 +       if (__find_mapping(xid, device, mode, &vdm, &global) > 0) {
16411 +               ret = 1;
16412 +               vdmt = &vdm->target;
16413 +               goto found;
16414 +       }
16415 +
16416 +       index = __mode_to_default(mode);
16417 +       if (vxi && vxi->dmap.targets[index].flags) {
16418 +               ret = 2;
16419 +               vdmt = &vxi->dmap.targets[index];
16420 +       } else if (global) {
16421 +               ret = 3;
16422 +               vdmt = &global->target;
16423 +               goto found;
16424 +       } else {
16425 +               ret = 4;
16426 +               vdmt = &dmap_defaults[index];
16427 +       }
16428 +
16429 +found:
16430 +       if (target && (vdmt->flags & DATTR_REMAP))
16431 +               *target = vdmt->target;
16432 +       else if (target)
16433 +               *target = device;
16434 +       if (flags)
16435 +               *flags = vdmt->flags;
16436 +
16437 +       spin_unlock(hash_lock);
16438 +
16439 +       return ret;
16440 +}
16441 +
16442 +
16443 +/*     __remove_mapping()
16444 + *     remove a mapping from the hash table
16445 + */
16446 +static inline int __remove_mapping(struct vx_info *vxi, dev_t device,
16447 +       umode_t mode)
16448 +{
16449 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16450 +       struct vs_mapping *vdm = NULL;
16451 +       int ret = 0;
16452 +
16453 +       spin_lock(hash_lock);
16454 +
16455 +       ret = __find_mapping((vxi ? vxi->vx_id : 0), device, mode, &vdm,
16456 +               NULL);
16457 +       vxdprintk(VXD_CBIT(misc, 8), "__remove_mapping: %p[#%d] %08x %04x",
16458 +               vxi, vxi ? vxi->vx_id : 0, device, mode);
16459 +       if (ret < 0)
16460 +               goto out;
16461 +       hlist_del(&vdm->dm_hlist);
16462 +
16463 +out:
16464 +       spin_unlock(hash_lock);
16465 +       if (vdm)
16466 +               kmem_cache_free(dmap_cachep, vdm);
16467 +       return ret;
16468 +}
16469 +
16470 +
16471 +
16472 +int vs_map_device(struct vx_info *vxi,
16473 +       dev_t device, dev_t *target, umode_t mode)
16474 +{
16475 +       int ret, flags = DATTR_MASK;
16476 +
16477 +       if (!vxi) {
16478 +               if (target)
16479 +                       *target = device;
16480 +               goto out;
16481 +       }
16482 +       ret = __lookup_mapping(vxi, device, target, &flags, mode);
16483 +       vxdprintk(VXD_CBIT(misc, 8), "vs_map_device: %08x target: %08x flags: %04x mode: %04x mapped=%d",
16484 +               device, target ? *target : 0, flags, mode, ret);
16485 +out:
16486 +       return (flags & DATTR_MASK);
16487 +}
16488 +
16489 +
16490 +
16491 +static int do_set_mapping(struct vx_info *vxi,
16492 +       dev_t device, dev_t target, int flags, umode_t mode)
16493 +{
16494 +       if (device) {
16495 +               struct vs_mapping *new;
16496 +
16497 +               new = kmem_cache_alloc(dmap_cachep, GFP_KERNEL);
16498 +               if (!new)
16499 +                       return -ENOMEM;
16500 +
16501 +               INIT_HLIST_NODE(&new->dm_hlist);
16502 +               new->device = device;
16503 +               new->target.target = target;
16504 +               new->target.flags = flags | mode;
16505 +               new->xid = (vxi ? vxi->vx_id : 0);
16506 +
16507 +               vxdprintk(VXD_CBIT(misc, 8), "do_set_mapping: %08x target: %08x flags: %04x", device, target, flags);
16508 +               __hash_mapping(vxi, new);
16509 +       } else {
16510 +               struct vx_dmap_target new = {
16511 +                       .target = target,
16512 +                       .flags = flags | mode,
16513 +               };
16514 +               __set_default(vxi, mode, &new);
16515 +       }
16516 +       return 0;
16517 +}
16518 +
16519 +
16520 +static int do_unset_mapping(struct vx_info *vxi,
16521 +       dev_t device, dev_t target, int flags, umode_t mode)
16522 +{
16523 +       int ret = -EINVAL;
16524 +
16525 +       if (device) {
16526 +               ret = __remove_mapping(vxi, device, mode);
16527 +               if (ret < 0)
16528 +                       goto out;
16529 +       } else {
16530 +               ret = __remove_default(vxi, mode);
16531 +               if (ret < 0)
16532 +                       goto out;
16533 +       }
16534 +
16535 +out:
16536 +       return ret;
16537 +}
16538 +
16539 +
16540 +static inline int __user_device(const char __user *name, dev_t *dev,
16541 +       umode_t *mode)
16542 +{
16543 +       struct path path;
16544 +       int ret;
16545 +
16546 +       if (!name) {
16547 +               *dev = 0;
16548 +               return 0;
16549 +       }
16550 +       ret = user_lpath(name, &path);
16551 +       if (ret)
16552 +               return ret;
16553 +       if (path.dentry->d_inode) {
16554 +               *dev = path.dentry->d_inode->i_rdev;
16555 +               *mode = path.dentry->d_inode->i_mode;
16556 +       }
16557 +       path_put(&path);
16558 +       return 0;
16559 +}
16560 +
16561 +static inline int __mapping_mode(dev_t device, dev_t target,
16562 +       umode_t device_mode, umode_t target_mode, umode_t *mode)
16563 +{
16564 +       if (device)
16565 +               *mode = device_mode & S_IFMT;
16566 +       else if (target)
16567 +               *mode = target_mode & S_IFMT;
16568 +       else
16569 +               return -EINVAL;
16570 +
16571 +       /* if both given, device and target mode have to match */
16572 +       if (device && target &&
16573 +               ((device_mode ^ target_mode) & S_IFMT))
16574 +               return -EINVAL;
16575 +       return 0;
16576 +}
16577 +
16578 +
16579 +static inline int do_mapping(struct vx_info *vxi, const char __user *device_path,
16580 +       const char __user *target_path, int flags, int set)
16581 +{
16582 +       dev_t device = ~0, target = ~0;
16583 +       umode_t device_mode = 0, target_mode = 0, mode;
16584 +       int ret;
16585 +
16586 +       ret = __user_device(device_path, &device, &device_mode);
16587 +       if (ret)
16588 +               return ret;
16589 +       ret = __user_device(target_path, &target, &target_mode);
16590 +       if (ret)
16591 +               return ret;
16592 +
16593 +       ret = __mapping_mode(device, target,
16594 +               device_mode, target_mode, &mode);
16595 +       if (ret)
16596 +               return ret;
16597 +
16598 +       if (set)
16599 +               return do_set_mapping(vxi, device, target,
16600 +                       flags, mode);
16601 +       else
16602 +               return do_unset_mapping(vxi, device, target,
16603 +                       flags, mode);
16604 +}
16605 +
16606 +
16607 +int vc_set_mapping(struct vx_info *vxi, void __user *data)
16608 +{
16609 +       struct vcmd_set_mapping_v0 vc_data;
16610 +
16611 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16612 +               return -EFAULT;
16613 +
16614 +       return do_mapping(vxi, vc_data.device, vc_data.target,
16615 +               vc_data.flags, 1);
16616 +}
16617 +
16618 +int vc_unset_mapping(struct vx_info *vxi, void __user *data)
16619 +{
16620 +       struct vcmd_set_mapping_v0 vc_data;
16621 +
16622 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16623 +               return -EFAULT;
16624 +
16625 +       return do_mapping(vxi, vc_data.device, vc_data.target,
16626 +               vc_data.flags, 0);
16627 +}
16628 +
16629 +
16630 +#ifdef CONFIG_COMPAT
16631 +
16632 +int vc_set_mapping_x32(struct vx_info *vxi, void __user *data)
16633 +{
16634 +       struct vcmd_set_mapping_v0_x32 vc_data;
16635 +
16636 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16637 +               return -EFAULT;
16638 +
16639 +       return do_mapping(vxi, compat_ptr(vc_data.device_ptr),
16640 +               compat_ptr(vc_data.target_ptr), vc_data.flags, 1);
16641 +}
16642 +
16643 +int vc_unset_mapping_x32(struct vx_info *vxi, void __user *data)
16644 +{
16645 +       struct vcmd_set_mapping_v0_x32 vc_data;
16646 +
16647 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16648 +               return -EFAULT;
16649 +
16650 +       return do_mapping(vxi, compat_ptr(vc_data.device_ptr),
16651 +               compat_ptr(vc_data.target_ptr), vc_data.flags, 0);
16652 +}
16653 +
16654 +#endif /* CONFIG_COMPAT */
16655 +
16656 +
16657 diff -NurpP --minimal linux-4.4.111/kernel/vserver/dlimit.c linux-4.4.111-vs2.3.9.5/kernel/vserver/dlimit.c
16658 --- linux-4.4.111/kernel/vserver/dlimit.c       1970-01-01 00:00:00.000000000 +0000
16659 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/dlimit.c     2018-01-09 16:36:34.000000000 +0000
16660 @@ -0,0 +1,528 @@
16661 +/*
16662 + *  linux/kernel/vserver/dlimit.c
16663 + *
16664 + *  Virtual Server: Context Disk Limits
16665 + *
16666 + *  Copyright (C) 2004-2009  Herbert P?tzl
16667 + *
16668 + *  V0.01  initial version
16669 + *  V0.02  compat32 splitup
16670 + *  V0.03  extended interface
16671 + *
16672 + */
16673 +
16674 +#include <linux/statfs.h>
16675 +#include <linux/sched.h>
16676 +#include <linux/namei.h>
16677 +#include <linux/vs_tag.h>
16678 +#include <linux/vs_dlimit.h>
16679 +#include <linux/vserver/dlimit_cmd.h>
16680 +#include <linux/slab.h>
16681 +// #include <linux/gfp.h>
16682 +
16683 +#include <asm/uaccess.h>
16684 +
16685 +/*     __alloc_dl_info()
16686 +
16687 +       * allocate an initialized dl_info struct
16688 +       * doesn't make it visible (hash)                        */
16689 +
16690 +static struct dl_info *__alloc_dl_info(struct super_block *sb, vtag_t tag)
16691 +{
16692 +       struct dl_info *new = NULL;
16693 +
16694 +       vxdprintk(VXD_CBIT(dlim, 5),
16695 +               "alloc_dl_info(%p,%d)*", sb, tag);
16696 +
16697 +       /* would this benefit from a slab cache? */
16698 +       new = kmalloc(sizeof(struct dl_info), GFP_KERNEL);
16699 +       if (!new)
16700 +               return 0;
16701 +
16702 +       memset(new, 0, sizeof(struct dl_info));
16703 +       new->dl_tag = tag;
16704 +       new->dl_sb = sb;
16705 +       // INIT_RCU_HEAD(&new->dl_rcu);
16706 +       INIT_HLIST_NODE(&new->dl_hlist);
16707 +       spin_lock_init(&new->dl_lock);
16708 +       atomic_set(&new->dl_refcnt, 0);
16709 +       atomic_set(&new->dl_usecnt, 0);
16710 +
16711 +       /* rest of init goes here */
16712 +
16713 +       vxdprintk(VXD_CBIT(dlim, 4),
16714 +               "alloc_dl_info(%p,%d) = %p", sb, tag, new);
16715 +       return new;
16716 +}
16717 +
16718 +/*     __dealloc_dl_info()
16719 +
16720 +       * final disposal of dl_info                             */
16721 +
16722 +static void __dealloc_dl_info(struct dl_info *dli)
16723 +{
16724 +       vxdprintk(VXD_CBIT(dlim, 4),
16725 +               "dealloc_dl_info(%p)", dli);
16726 +
16727 +       dli->dl_hlist.next = LIST_POISON1;
16728 +       dli->dl_tag = -1;
16729 +       dli->dl_sb = 0;
16730 +
16731 +       BUG_ON(atomic_read(&dli->dl_usecnt));
16732 +       BUG_ON(atomic_read(&dli->dl_refcnt));
16733 +
16734 +       kfree(dli);
16735 +}
16736 +
16737 +
16738 +/*     hash table for dl_info hash */
16739 +
16740 +#define DL_HASH_SIZE   13
16741 +
16742 +struct hlist_head dl_info_hash[DL_HASH_SIZE];
16743 +
16744 +static DEFINE_SPINLOCK(dl_info_hash_lock);
16745 +
16746 +
16747 +static inline unsigned int __hashval(struct super_block *sb, vtag_t tag)
16748 +{
16749 +       return ((tag ^ (unsigned long)sb) % DL_HASH_SIZE);
16750 +}
16751 +
16752 +
16753 +
16754 +/*     __hash_dl_info()
16755 +
16756 +       * add the dli to the global hash table
16757 +       * requires the hash_lock to be held                     */
16758 +
16759 +static inline void __hash_dl_info(struct dl_info *dli)
16760 +{
16761 +       struct hlist_head *head;
16762 +
16763 +       vxdprintk(VXD_CBIT(dlim, 6),
16764 +               "__hash_dl_info: %p[#%d]", dli, dli->dl_tag);
16765 +       get_dl_info(dli);
16766 +       head = &dl_info_hash[__hashval(dli->dl_sb, dli->dl_tag)];
16767 +       hlist_add_head_rcu(&dli->dl_hlist, head);
16768 +}
16769 +
16770 +/*     __unhash_dl_info()
16771 +
16772 +       * remove the dli from the global hash table
16773 +       * requires the hash_lock to be held                     */
16774 +
16775 +static inline void __unhash_dl_info(struct dl_info *dli)
16776 +{
16777 +       vxdprintk(VXD_CBIT(dlim, 6),
16778 +               "__unhash_dl_info: %p[#%d]", dli, dli->dl_tag);
16779 +       hlist_del_rcu(&dli->dl_hlist);
16780 +       put_dl_info(dli);
16781 +}
16782 +
16783 +
16784 +/*     __lookup_dl_info()
16785 +
16786 +       * requires the rcu_read_lock()
16787 +       * doesn't increment the dl_refcnt                       */
16788 +
16789 +static inline struct dl_info *__lookup_dl_info(struct super_block *sb, vtag_t tag)
16790 +{
16791 +       struct hlist_head *head = &dl_info_hash[__hashval(sb, tag)];
16792 +       struct dl_info *dli;
16793 +
16794 +       hlist_for_each_entry_rcu(dli, head, dl_hlist) {
16795 +               if (dli->dl_tag == tag && dli->dl_sb == sb)
16796 +                       return dli;
16797 +       }
16798 +       return NULL;
16799 +}
16800 +
16801 +
16802 +struct dl_info *locate_dl_info(struct super_block *sb, vtag_t tag)
16803 +{
16804 +       struct dl_info *dli;
16805 +
16806 +       rcu_read_lock();
16807 +       dli = get_dl_info(__lookup_dl_info(sb, tag));
16808 +       vxdprintk(VXD_CBIT(dlim, 7),
16809 +               "locate_dl_info(%p,#%d) = %p", sb, tag, dli);
16810 +       rcu_read_unlock();
16811 +       return dli;
16812 +}
16813 +
16814 +void rcu_free_dl_info(struct rcu_head *head)
16815 +{
16816 +       struct dl_info *dli = container_of(head, struct dl_info, dl_rcu);
16817 +       int usecnt, refcnt;
16818 +
16819 +       BUG_ON(!dli || !head);
16820 +
16821 +       usecnt = atomic_read(&dli->dl_usecnt);
16822 +       BUG_ON(usecnt < 0);
16823 +
16824 +       refcnt = atomic_read(&dli->dl_refcnt);
16825 +       BUG_ON(refcnt < 0);
16826 +
16827 +       vxdprintk(VXD_CBIT(dlim, 3),
16828 +               "rcu_free_dl_info(%p)", dli);
16829 +       if (!usecnt)
16830 +               __dealloc_dl_info(dli);
16831 +       else
16832 +               printk("!!! rcu didn't free\n");
16833 +}
16834 +
16835 +
16836 +
16837 +
16838 +static int do_addrem_dlimit(uint32_t id, const char __user *name,
16839 +       uint32_t flags, int add)
16840 +{
16841 +       struct path path;
16842 +       int ret;
16843 +
16844 +       ret = user_lpath(name, &path);
16845 +       if (!ret) {
16846 +               struct super_block *sb;
16847 +               struct dl_info *dli;
16848 +
16849 +               ret = -EINVAL;
16850 +               if (!path.dentry->d_inode)
16851 +                       goto out_release;
16852 +               if (!(sb = path.dentry->d_inode->i_sb))
16853 +                       goto out_release;
16854 +
16855 +               if (add) {
16856 +                       dli = __alloc_dl_info(sb, id);
16857 +                       spin_lock(&dl_info_hash_lock);
16858 +
16859 +                       ret = -EEXIST;
16860 +                       if (__lookup_dl_info(sb, id))
16861 +                               goto out_unlock;
16862 +                       __hash_dl_info(dli);
16863 +                       dli = NULL;
16864 +               } else {
16865 +                       spin_lock(&dl_info_hash_lock);
16866 +                       dli = __lookup_dl_info(sb, id);
16867 +
16868 +                       ret = -ESRCH;
16869 +                       if (!dli)
16870 +                               goto out_unlock;
16871 +                       __unhash_dl_info(dli);
16872 +               }
16873 +               ret = 0;
16874 +       out_unlock:
16875 +               spin_unlock(&dl_info_hash_lock);
16876 +               if (add && dli)
16877 +                       __dealloc_dl_info(dli);
16878 +       out_release:
16879 +               path_put(&path);
16880 +       }
16881 +       return ret;
16882 +}
16883 +
16884 +int vc_add_dlimit(uint32_t id, void __user *data)
16885 +{
16886 +       struct vcmd_ctx_dlimit_base_v0 vc_data;
16887 +
16888 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16889 +               return -EFAULT;
16890 +
16891 +       return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 1);
16892 +}
16893 +
16894 +int vc_rem_dlimit(uint32_t id, void __user *data)
16895 +{
16896 +       struct vcmd_ctx_dlimit_base_v0 vc_data;
16897 +
16898 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16899 +               return -EFAULT;
16900 +
16901 +       return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 0);
16902 +}
16903 +
16904 +#ifdef CONFIG_COMPAT
16905 +
16906 +int vc_add_dlimit_x32(uint32_t id, void __user *data)
16907 +{
16908 +       struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
16909 +
16910 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16911 +               return -EFAULT;
16912 +
16913 +       return do_addrem_dlimit(id,
16914 +               compat_ptr(vc_data.name_ptr), vc_data.flags, 1);
16915 +}
16916 +
16917 +int vc_rem_dlimit_x32(uint32_t id, void __user *data)
16918 +{
16919 +       struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
16920 +
16921 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16922 +               return -EFAULT;
16923 +
16924 +       return do_addrem_dlimit(id,
16925 +               compat_ptr(vc_data.name_ptr), vc_data.flags, 0);
16926 +}
16927 +
16928 +#endif /* CONFIG_COMPAT */
16929 +
16930 +
16931 +static inline
16932 +int do_set_dlimit(uint32_t id, const char __user *name,
16933 +       uint32_t space_used, uint32_t space_total,
16934 +       uint32_t inodes_used, uint32_t inodes_total,
16935 +       uint32_t reserved, uint32_t flags)
16936 +{
16937 +       struct path path;
16938 +       int ret;
16939 +
16940 +       ret = user_lpath(name, &path);
16941 +       if (!ret) {
16942 +               struct super_block *sb;
16943 +               struct dl_info *dli;
16944 +
16945 +               ret = -EINVAL;
16946 +               if (!path.dentry->d_inode)
16947 +                       goto out_release;
16948 +               if (!(sb = path.dentry->d_inode->i_sb))
16949 +                       goto out_release;
16950 +
16951 +               /* sanity checks */
16952 +               if ((reserved != CDLIM_KEEP &&
16953 +                       reserved > 100) ||
16954 +                       (inodes_used != CDLIM_KEEP &&
16955 +                       inodes_used > inodes_total) ||
16956 +                       (space_used != CDLIM_KEEP &&
16957 +                       space_used > space_total))
16958 +                       goto out_release;
16959 +
16960 +               ret = -ESRCH;
16961 +               dli = locate_dl_info(sb, id);
16962 +               if (!dli)
16963 +                       goto out_release;
16964 +
16965 +               spin_lock(&dli->dl_lock);
16966 +
16967 +               if (inodes_used != CDLIM_KEEP)
16968 +                       dli->dl_inodes_used = inodes_used;
16969 +               if (inodes_total != CDLIM_KEEP)
16970 +                       dli->dl_inodes_total = inodes_total;
16971 +               if (space_used != CDLIM_KEEP)
16972 +                       dli->dl_space_used = dlimit_space_32to64(
16973 +                               space_used, flags, DLIMS_USED);
16974 +
16975 +               if (space_total == CDLIM_INFINITY)
16976 +                       dli->dl_space_total = DLIM_INFINITY;
16977 +               else if (space_total != CDLIM_KEEP)
16978 +                       dli->dl_space_total = dlimit_space_32to64(
16979 +                               space_total, flags, DLIMS_TOTAL);
16980 +
16981 +               if (reserved != CDLIM_KEEP)
16982 +                       dli->dl_nrlmult = (1 << 10) * (100 - reserved) / 100;
16983 +
16984 +               spin_unlock(&dli->dl_lock);
16985 +
16986 +               put_dl_info(dli);
16987 +               ret = 0;
16988 +
16989 +       out_release:
16990 +               path_put(&path);
16991 +       }
16992 +       return ret;
16993 +}
16994 +
16995 +int vc_set_dlimit(uint32_t id, void __user *data)
16996 +{
16997 +       struct vcmd_ctx_dlimit_v0 vc_data;
16998 +
16999 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17000 +               return -EFAULT;
17001 +
17002 +       return do_set_dlimit(id, vc_data.name,
17003 +               vc_data.space_used, vc_data.space_total,
17004 +               vc_data.inodes_used, vc_data.inodes_total,
17005 +               vc_data.reserved, vc_data.flags);
17006 +}
17007 +
17008 +#ifdef CONFIG_COMPAT
17009 +
17010 +int vc_set_dlimit_x32(uint32_t id, void __user *data)
17011 +{
17012 +       struct vcmd_ctx_dlimit_v0_x32 vc_data;
17013 +
17014 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17015 +               return -EFAULT;
17016 +
17017 +       return do_set_dlimit(id, compat_ptr(vc_data.name_ptr),
17018 +               vc_data.space_used, vc_data.space_total,
17019 +               vc_data.inodes_used, vc_data.inodes_total,
17020 +               vc_data.reserved, vc_data.flags);
17021 +}
17022 +
17023 +#endif /* CONFIG_COMPAT */
17024 +
17025 +
17026 +static inline
17027 +int do_get_dlimit(uint32_t id, const char __user *name,
17028 +       uint32_t *space_used, uint32_t *space_total,
17029 +       uint32_t *inodes_used, uint32_t *inodes_total,
17030 +       uint32_t *reserved, uint32_t *flags)
17031 +{
17032 +       struct path path;
17033 +       int ret;
17034 +
17035 +       ret = user_lpath(name, &path);
17036 +       if (!ret) {
17037 +               struct super_block *sb;
17038 +               struct dl_info *dli;
17039 +
17040 +               ret = -EINVAL;
17041 +               if (!path.dentry->d_inode)
17042 +                       goto out_release;
17043 +               if (!(sb = path.dentry->d_inode->i_sb))
17044 +                       goto out_release;
17045 +
17046 +               ret = -ESRCH;
17047 +               dli = locate_dl_info(sb, id);
17048 +               if (!dli)
17049 +                       goto out_release;
17050 +
17051 +               spin_lock(&dli->dl_lock);
17052 +               *inodes_used = dli->dl_inodes_used;
17053 +               *inodes_total = dli->dl_inodes_total;
17054 +
17055 +               *space_used = dlimit_space_64to32(
17056 +                       dli->dl_space_used, flags, DLIMS_USED);
17057 +
17058 +               if (dli->dl_space_total == DLIM_INFINITY)
17059 +                       *space_total = CDLIM_INFINITY;
17060 +               else
17061 +                       *space_total = dlimit_space_64to32(
17062 +                               dli->dl_space_total, flags, DLIMS_TOTAL);
17063 +
17064 +               *reserved = 100 - ((dli->dl_nrlmult * 100 + 512) >> 10);
17065 +               spin_unlock(&dli->dl_lock);
17066 +
17067 +               put_dl_info(dli);
17068 +               ret = -EFAULT;
17069 +
17070 +               ret = 0;
17071 +       out_release:
17072 +               path_put(&path);
17073 +       }
17074 +       return ret;
17075 +}
17076 +
17077 +
17078 +int vc_get_dlimit(uint32_t id, void __user *data)
17079 +{
17080 +       struct vcmd_ctx_dlimit_v0 vc_data;
17081 +       int ret;
17082 +
17083 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17084 +               return -EFAULT;
17085 +
17086 +       ret = do_get_dlimit(id, vc_data.name,
17087 +               &vc_data.space_used, &vc_data.space_total,
17088 +               &vc_data.inodes_used, &vc_data.inodes_total,
17089 +               &vc_data.reserved, &vc_data.flags);
17090 +       if (ret)
17091 +               return ret;
17092 +
17093 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17094 +               return -EFAULT;
17095 +       return 0;
17096 +}
17097 +
17098 +#ifdef CONFIG_COMPAT
17099 +
17100 +int vc_get_dlimit_x32(uint32_t id, void __user *data)
17101 +{
17102 +       struct vcmd_ctx_dlimit_v0_x32 vc_data;
17103 +       int ret;
17104 +
17105 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17106 +               return -EFAULT;
17107 +
17108 +       ret = do_get_dlimit(id, compat_ptr(vc_data.name_ptr),
17109 +               &vc_data.space_used, &vc_data.space_total,
17110 +               &vc_data.inodes_used, &vc_data.inodes_total,
17111 +               &vc_data.reserved, &vc_data.flags);
17112 +       if (ret)
17113 +               return ret;
17114 +
17115 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17116 +               return -EFAULT;
17117 +       return 0;
17118 +}
17119 +
17120 +#endif /* CONFIG_COMPAT */
17121 +
17122 +
17123 +void vx_vsi_statfs(struct super_block *sb, struct kstatfs *buf)
17124 +{
17125 +       struct dl_info *dli;
17126 +       __u64 blimit, bfree, bavail;
17127 +       __u32 ifree;
17128 +
17129 +       dli = locate_dl_info(sb, dx_current_tag());
17130 +       if (!dli)
17131 +               return;
17132 +
17133 +       spin_lock(&dli->dl_lock);
17134 +       if (dli->dl_inodes_total == (unsigned long)DLIM_INFINITY)
17135 +               goto no_ilim;
17136 +
17137 +       /* reduce max inodes available to limit */
17138 +       if (buf->f_files > dli->dl_inodes_total)
17139 +               buf->f_files = dli->dl_inodes_total;
17140 +
17141 +       ifree = dli->dl_inodes_total - dli->dl_inodes_used;
17142 +       /* reduce free inodes to min */
17143 +       if (ifree < buf->f_ffree)
17144 +               buf->f_ffree = ifree;
17145 +
17146 +no_ilim:
17147 +       if (dli->dl_space_total == DLIM_INFINITY)
17148 +               goto no_blim;
17149 +
17150 +       blimit = dli->dl_space_total >> sb->s_blocksize_bits;
17151 +
17152 +       if (dli->dl_space_total < dli->dl_space_used)
17153 +               bfree = 0;
17154 +       else
17155 +               bfree = (dli->dl_space_total - dli->dl_space_used)
17156 +                       >> sb->s_blocksize_bits;
17157 +
17158 +       bavail = ((dli->dl_space_total >> 10) * dli->dl_nrlmult);
17159 +       if (bavail < dli->dl_space_used)
17160 +               bavail = 0;
17161 +       else
17162 +               bavail = (bavail - dli->dl_space_used)
17163 +                       >> sb->s_blocksize_bits;
17164 +
17165 +       /* reduce max space available to limit */
17166 +       if (buf->f_blocks > blimit)
17167 +               buf->f_blocks = blimit;
17168 +
17169 +       /* reduce free space to min */
17170 +       if (bfree < buf->f_bfree)
17171 +               buf->f_bfree = bfree;
17172 +
17173 +       /* reduce avail space to min */
17174 +       if (bavail < buf->f_bavail)
17175 +               buf->f_bavail = bavail;
17176 +
17177 +no_blim:
17178 +       spin_unlock(&dli->dl_lock);
17179 +       put_dl_info(dli);
17180 +
17181 +       return;
17182 +}
17183 +
17184 +#include <linux/module.h>
17185 +
17186 +EXPORT_SYMBOL_GPL(locate_dl_info);
17187 +EXPORT_SYMBOL_GPL(rcu_free_dl_info);
17188 +
17189 diff -NurpP --minimal linux-4.4.111/kernel/vserver/helper.c linux-4.4.111-vs2.3.9.5/kernel/vserver/helper.c
17190 --- linux-4.4.111/kernel/vserver/helper.c       1970-01-01 00:00:00.000000000 +0000
17191 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/helper.c     2018-01-09 16:36:34.000000000 +0000
17192 @@ -0,0 +1,242 @@
17193 +/*
17194 + *  linux/kernel/vserver/helper.c
17195 + *
17196 + *  Virtual Context Support
17197 + *
17198 + *  Copyright (C) 2004-2007  Herbert P?tzl
17199 + *
17200 + *  V0.01  basic helper
17201 + *
17202 + */
17203 +
17204 +#include <linux/kmod.h>
17205 +#include <linux/reboot.h>
17206 +#include <linux/vs_context.h>
17207 +#include <linux/vs_network.h>
17208 +#include <linux/vserver/signal.h>
17209 +
17210 +
17211 +char vshelper_path[255] = "/sbin/vshelper";
17212 +
17213 +static int vshelper_init(struct subprocess_info *info, struct cred *new_cred)
17214 +{
17215 +       current->flags &= ~PF_NO_SETAFFINITY;
17216 +       return 0;
17217 +}
17218 +
17219 +static int vs_call_usermodehelper(char *path, char **argv, char **envp, int wait)
17220 +{
17221 +       struct subprocess_info *info;
17222 +       gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
17223 +
17224 +       info = call_usermodehelper_setup(path, argv, envp, gfp_mask,
17225 +                                        vshelper_init, NULL, NULL);
17226 +       if (info == NULL)
17227 +               return -ENOMEM;
17228 +
17229 +       return call_usermodehelper_exec(info, wait);
17230 +}
17231 +
17232 +static int do_vshelper(char *name, char *argv[], char *envp[], int sync)
17233 +{
17234 +       int ret;
17235 +
17236 +       if ((ret = vs_call_usermodehelper(name, argv, envp,
17237 +               sync ? UMH_WAIT_PROC : UMH_WAIT_EXEC))) {
17238 +               printk(KERN_WARNING "%s: (%s %s) returned %s with %d\n",
17239 +                       name, argv[1], argv[2],
17240 +                       sync ? "sync" : "async", ret);
17241 +       }
17242 +       vxdprintk(VXD_CBIT(switch, 4),
17243 +               "%s: (%s %s) returned %s with %d",
17244 +               name, argv[1], argv[2], sync ? "sync" : "async", ret);
17245 +       return ret;
17246 +}
17247 +
17248 +/*
17249 + *      vshelper path is set via /proc/sys
17250 + *      invoked by vserver sys_reboot(), with
17251 + *      the following arguments
17252 + *
17253 + *      argv [0] = vshelper_path;
17254 + *      argv [1] = action: "restart", "halt", "poweroff", ...
17255 + *      argv [2] = context identifier
17256 + *
17257 + *      envp [*] = type-specific parameters
17258 + */
17259 +
17260 +long vs_reboot_helper(struct vx_info *vxi, int cmd, void __user *arg)
17261 +{
17262 +       char id_buf[8], cmd_buf[16];
17263 +       char uid_buf[16], pid_buf[16];
17264 +       int ret;
17265 +
17266 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17267 +       char *envp[] = {"HOME=/", "TERM=linux",
17268 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
17269 +                       uid_buf, pid_buf, cmd_buf, 0};
17270 +
17271 +       if (vx_info_state(vxi, VXS_HELPER))
17272 +               return -EAGAIN;
17273 +       vxi->vx_state |= VXS_HELPER;
17274 +
17275 +       snprintf(id_buf, sizeof(id_buf), "%d", vxi->vx_id);
17276 +
17277 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17278 +       snprintf(uid_buf, sizeof(uid_buf), "VS_UID=%d",
17279 +               from_kuid(&init_user_ns, current_uid()));
17280 +       snprintf(pid_buf, sizeof(pid_buf), "VS_PID=%d", current->pid);
17281 +
17282 +       switch (cmd) {
17283 +       case LINUX_REBOOT_CMD_RESTART:
17284 +               argv[1] = "restart";
17285 +               break;
17286 +
17287 +       case LINUX_REBOOT_CMD_HALT:
17288 +               argv[1] = "halt";
17289 +               break;
17290 +
17291 +       case LINUX_REBOOT_CMD_POWER_OFF:
17292 +               argv[1] = "poweroff";
17293 +               break;
17294 +
17295 +       case LINUX_REBOOT_CMD_SW_SUSPEND:
17296 +               argv[1] = "swsusp";
17297 +               break;
17298 +
17299 +       case LINUX_REBOOT_CMD_OOM:
17300 +               argv[1] = "oom";
17301 +               break;
17302 +
17303 +       default:
17304 +               vxi->vx_state &= ~VXS_HELPER;
17305 +               return 0;
17306 +       }
17307 +
17308 +       ret = do_vshelper(vshelper_path, argv, envp, 0);
17309 +       vxi->vx_state &= ~VXS_HELPER;
17310 +       __wakeup_vx_info(vxi);
17311 +       return (ret) ? -EPERM : 0;
17312 +}
17313 +
17314 +
17315 +long vs_reboot(unsigned int cmd, void __user *arg)
17316 +{
17317 +       struct vx_info *vxi = current_vx_info();
17318 +       long ret = 0;
17319 +
17320 +       vxdprintk(VXD_CBIT(misc, 5),
17321 +               "vs_reboot(%p[#%d],%u)",
17322 +               vxi, vxi ? vxi->vx_id : 0, cmd);
17323 +
17324 +       ret = vs_reboot_helper(vxi, cmd, arg);
17325 +       if (ret)
17326 +               return ret;
17327 +
17328 +       vxi->reboot_cmd = cmd;
17329 +       if (vx_info_flags(vxi, VXF_REBOOT_KILL, 0)) {
17330 +               switch (cmd) {
17331 +               case LINUX_REBOOT_CMD_RESTART:
17332 +               case LINUX_REBOOT_CMD_HALT:
17333 +               case LINUX_REBOOT_CMD_POWER_OFF:
17334 +                       vx_info_kill(vxi, 0, SIGKILL);
17335 +                       vx_info_kill(vxi, 1, SIGKILL);
17336 +               default:
17337 +                       break;
17338 +               }
17339 +       }
17340 +       return 0;
17341 +}
17342 +
17343 +long vs_oom_action(unsigned int cmd)
17344 +{
17345 +       struct vx_info *vxi = current_vx_info();
17346 +       long ret = 0;
17347 +
17348 +       vxdprintk(VXD_CBIT(misc, 5),
17349 +               "vs_oom_action(%p[#%d],%u)",
17350 +               vxi, vxi ? vxi->vx_id : 0, cmd);
17351 +
17352 +       ret = vs_reboot_helper(vxi, cmd, NULL);
17353 +       if (ret)
17354 +               return ret;
17355 +
17356 +       vxi->reboot_cmd = cmd;
17357 +       if (vx_info_flags(vxi, VXF_REBOOT_KILL, 0)) {
17358 +               vx_info_kill(vxi, 0, SIGKILL);
17359 +               vx_info_kill(vxi, 1, SIGKILL);
17360 +       }
17361 +       return 0;
17362 +}
17363 +
17364 +/*
17365 + *      argv [0] = vshelper_path;
17366 + *      argv [1] = action: "startup", "shutdown"
17367 + *      argv [2] = context identifier
17368 + *
17369 + *      envp [*] = type-specific parameters
17370 + */
17371 +
17372 +long vs_state_change(struct vx_info *vxi, unsigned int cmd)
17373 +{
17374 +       char id_buf[8], cmd_buf[16];
17375 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17376 +       char *envp[] = {"HOME=/", "TERM=linux",
17377 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
17378 +
17379 +       if (!vx_info_flags(vxi, VXF_SC_HELPER, 0))
17380 +               return 0;
17381 +
17382 +       snprintf(id_buf, sizeof(id_buf), "%d", vxi->vx_id);
17383 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17384 +
17385 +       switch (cmd) {
17386 +       case VSC_STARTUP:
17387 +               argv[1] = "startup";
17388 +               break;
17389 +       case VSC_SHUTDOWN:
17390 +               argv[1] = "shutdown";
17391 +               break;
17392 +       default:
17393 +               return 0;
17394 +       }
17395 +
17396 +       return do_vshelper(vshelper_path, argv, envp, 1);
17397 +}
17398 +
17399 +
17400 +/*
17401 + *      argv [0] = vshelper_path;
17402 + *      argv [1] = action: "netup", "netdown"
17403 + *      argv [2] = context identifier
17404 + *
17405 + *      envp [*] = type-specific parameters
17406 + */
17407 +
17408 +long vs_net_change(struct nx_info *nxi, unsigned int cmd)
17409 +{
17410 +       char id_buf[8], cmd_buf[16];
17411 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17412 +       char *envp[] = {"HOME=/", "TERM=linux",
17413 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
17414 +
17415 +       if (!nx_info_flags(nxi, NXF_SC_HELPER, 0))
17416 +               return 0;
17417 +
17418 +       snprintf(id_buf, sizeof(id_buf), "%d", nxi->nx_id);
17419 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17420 +
17421 +       switch (cmd) {
17422 +       case VSC_NETUP:
17423 +               argv[1] = "netup";
17424 +               break;
17425 +       case VSC_NETDOWN:
17426 +               argv[1] = "netdown";
17427 +               break;
17428 +       default:
17429 +               return 0;
17430 +       }
17431 +
17432 +       return do_vshelper(vshelper_path, argv, envp, 1);
17433 +}
17434 +
17435 diff -NurpP --minimal linux-4.4.111/kernel/vserver/history.c linux-4.4.111-vs2.3.9.5/kernel/vserver/history.c
17436 --- linux-4.4.111/kernel/vserver/history.c      1970-01-01 00:00:00.000000000 +0000
17437 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/history.c    2018-01-09 16:36:34.000000000 +0000
17438 @@ -0,0 +1,258 @@
17439 +/*
17440 + *  kernel/vserver/history.c
17441 + *
17442 + *  Virtual Context History Backtrace
17443 + *
17444 + *  Copyright (C) 2004-2007  Herbert P?tzl
17445 + *
17446 + *  V0.01  basic structure
17447 + *  V0.02  hash/unhash and trace
17448 + *  V0.03  preemption fixes
17449 + *
17450 + */
17451 +
17452 +#include <linux/module.h>
17453 +#include <asm/uaccess.h>
17454 +
17455 +#include <linux/vserver/context.h>
17456 +#include <linux/vserver/debug.h>
17457 +#include <linux/vserver/debug_cmd.h>
17458 +#include <linux/vserver/history.h>
17459 +
17460 +
17461 +#ifdef CONFIG_VSERVER_HISTORY
17462 +#define VXH_SIZE       CONFIG_VSERVER_HISTORY_SIZE
17463 +#else
17464 +#define VXH_SIZE       64
17465 +#endif
17466 +
17467 +struct _vx_history {
17468 +       unsigned int counter;
17469 +
17470 +       struct _vx_hist_entry entry[VXH_SIZE + 1];
17471 +};
17472 +
17473 +
17474 +DEFINE_PER_CPU(struct _vx_history, vx_history_buffer);
17475 +
17476 +unsigned volatile int vxh_active = 1;
17477 +
17478 +static atomic_t sequence = ATOMIC_INIT(0);
17479 +
17480 +
17481 +/*     vxh_advance()
17482 +
17483 +       * requires disabled preemption                          */
17484 +
17485 +struct _vx_hist_entry *vxh_advance(void *loc)
17486 +{
17487 +       unsigned int cpu = smp_processor_id();
17488 +       struct _vx_history *hist = &per_cpu(vx_history_buffer, cpu);
17489 +       struct _vx_hist_entry *entry;
17490 +       unsigned int index;
17491 +
17492 +       index = vxh_active ? (hist->counter++ % VXH_SIZE) : VXH_SIZE;
17493 +       entry = &hist->entry[index];
17494 +
17495 +       entry->seq = atomic_inc_return(&sequence);
17496 +       entry->loc = loc;
17497 +       return entry;
17498 +}
17499 +
17500 +EXPORT_SYMBOL_GPL(vxh_advance);
17501 +
17502 +
17503 +#define VXH_LOC_FMTS   "(#%04x,*%d):%p"
17504 +
17505 +#define VXH_LOC_ARGS(e)        (e)->seq, cpu, (e)->loc
17506 +
17507 +
17508 +#define VXH_VXI_FMTS   "%p[#%d,%d.%d]"
17509 +
17510 +#define VXH_VXI_ARGS(e)        (e)->vxi.ptr,                           \
17511 +                       (e)->vxi.ptr ? (e)->vxi.xid : 0,        \
17512 +                       (e)->vxi.ptr ? (e)->vxi.usecnt : 0,     \
17513 +                       (e)->vxi.ptr ? (e)->vxi.tasks : 0
17514 +
17515 +void   vxh_dump_entry(struct _vx_hist_entry *e, unsigned cpu)
17516 +{
17517 +       switch (e->type) {
17518 +       case VXH_THROW_OOPS:
17519 +               printk( VXH_LOC_FMTS " oops \n", VXH_LOC_ARGS(e));
17520 +               break;
17521 +
17522 +       case VXH_GET_VX_INFO:
17523 +       case VXH_PUT_VX_INFO:
17524 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS "\n",
17525 +                       VXH_LOC_ARGS(e),
17526 +                       (e->type == VXH_GET_VX_INFO) ? "get" : "put",
17527 +                       VXH_VXI_ARGS(e));
17528 +               break;
17529 +
17530 +       case VXH_INIT_VX_INFO:
17531 +       case VXH_SET_VX_INFO:
17532 +       case VXH_CLR_VX_INFO:
17533 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS " @%p\n",
17534 +                       VXH_LOC_ARGS(e),
17535 +                       (e->type == VXH_INIT_VX_INFO) ? "init" :
17536 +                       ((e->type == VXH_SET_VX_INFO) ? "set" : "clr"),
17537 +                       VXH_VXI_ARGS(e), e->sc.data);
17538 +               break;
17539 +
17540 +       case VXH_CLAIM_VX_INFO:
17541 +       case VXH_RELEASE_VX_INFO:
17542 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS " @%p\n",
17543 +                       VXH_LOC_ARGS(e),
17544 +                       (e->type == VXH_CLAIM_VX_INFO) ? "claim" : "release",
17545 +                       VXH_VXI_ARGS(e), e->sc.data);
17546 +               break;
17547 +
17548 +       case VXH_ALLOC_VX_INFO:
17549 +       case VXH_DEALLOC_VX_INFO:
17550 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS "\n",
17551 +                       VXH_LOC_ARGS(e),
17552 +                       (e->type == VXH_ALLOC_VX_INFO) ? "alloc" : "dealloc",
17553 +                       VXH_VXI_ARGS(e));
17554 +               break;
17555 +
17556 +       case VXH_HASH_VX_INFO:
17557 +       case VXH_UNHASH_VX_INFO:
17558 +               printk( VXH_LOC_FMTS " __%s_vx_info " VXH_VXI_FMTS "\n",
17559 +                       VXH_LOC_ARGS(e),
17560 +                       (e->type == VXH_HASH_VX_INFO) ? "hash" : "unhash",
17561 +                       VXH_VXI_ARGS(e));
17562 +               break;
17563 +
17564 +       case VXH_LOC_VX_INFO:
17565 +       case VXH_LOOKUP_VX_INFO:
17566 +       case VXH_CREATE_VX_INFO:
17567 +               printk( VXH_LOC_FMTS " __%s_vx_info [#%d] -> " VXH_VXI_FMTS "\n",
17568 +                       VXH_LOC_ARGS(e),
17569 +                       (e->type == VXH_CREATE_VX_INFO) ? "create" :
17570 +                       ((e->type == VXH_LOC_VX_INFO) ? "loc" : "lookup"),
17571 +                       e->ll.arg, VXH_VXI_ARGS(e));
17572 +               break;
17573 +       }
17574 +}
17575 +
17576 +static void __vxh_dump_history(void)
17577 +{
17578 +       unsigned int i, cpu;
17579 +
17580 +       printk("History:\tSEQ: %8x\tNR_CPUS: %d\n",
17581 +               atomic_read(&sequence), NR_CPUS);
17582 +
17583 +       for (i = 0; i < VXH_SIZE; i++) {
17584 +               for_each_online_cpu(cpu) {
17585 +                       struct _vx_history *hist =
17586 +                               &per_cpu(vx_history_buffer, cpu);
17587 +                       unsigned int index = (hist->counter - i) % VXH_SIZE;
17588 +                       struct _vx_hist_entry *entry = &hist->entry[index];
17589 +
17590 +                       vxh_dump_entry(entry, cpu);
17591 +               }
17592 +       }
17593 +}
17594 +
17595 +void   vxh_dump_history(void)
17596 +{
17597 +       vxh_active = 0;
17598 +#ifdef CONFIG_SMP
17599 +       local_irq_enable();
17600 +       smp_send_stop();
17601 +       local_irq_disable();
17602 +#endif
17603 +       __vxh_dump_history();
17604 +}
17605 +
17606 +
17607 +/* vserver syscall commands below here */
17608 +
17609 +
17610 +int vc_dump_history(uint32_t id)
17611 +{
17612 +       vxh_active = 0;
17613 +       __vxh_dump_history();
17614 +       vxh_active = 1;
17615 +
17616 +       return 0;
17617 +}
17618 +
17619 +
17620 +int do_read_history(struct __user _vx_hist_entry *data,
17621 +       int cpu, uint32_t *index, uint32_t *count)
17622 +{
17623 +       int pos, ret = 0;
17624 +       struct _vx_history *hist = &per_cpu(vx_history_buffer, cpu);
17625 +       int end = hist->counter;
17626 +       int start = end - VXH_SIZE + 2;
17627 +       int idx = *index;
17628 +
17629 +       /* special case: get current pos */
17630 +       if (!*count) {
17631 +               *index = end;
17632 +               return 0;
17633 +       }
17634 +
17635 +       /* have we lost some data? */
17636 +       if (idx < start)
17637 +               idx = start;
17638 +
17639 +       for (pos = 0; (pos < *count) && (idx < end); pos++, idx++) {
17640 +               struct _vx_hist_entry *entry =
17641 +                       &hist->entry[idx % VXH_SIZE];
17642 +
17643 +               /* send entry to userspace */
17644 +               ret = copy_to_user(&data[pos], entry, sizeof(*entry));
17645 +               if (ret)
17646 +                       break;
17647 +       }
17648 +       /* save new index and count */
17649 +       *index = idx;
17650 +       *count = pos;
17651 +       return ret ? ret : (*index < end);
17652 +}
17653 +
17654 +int vc_read_history(uint32_t id, void __user *data)
17655 +{
17656 +       struct vcmd_read_history_v0 vc_data;
17657 +       int ret;
17658 +
17659 +       if (id >= NR_CPUS)
17660 +               return -EINVAL;
17661 +
17662 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17663 +               return -EFAULT;
17664 +
17665 +       ret = do_read_history((struct __user _vx_hist_entry *)vc_data.data,
17666 +               id, &vc_data.index, &vc_data.count);
17667 +
17668 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17669 +               return -EFAULT;
17670 +       return ret;
17671 +}
17672 +
17673 +#ifdef CONFIG_COMPAT
17674 +
17675 +int vc_read_history_x32(uint32_t id, void __user *data)
17676 +{
17677 +       struct vcmd_read_history_v0_x32 vc_data;
17678 +       int ret;
17679 +
17680 +       if (id >= NR_CPUS)
17681 +               return -EINVAL;
17682 +
17683 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17684 +               return -EFAULT;
17685 +
17686 +       ret = do_read_history((struct __user _vx_hist_entry *)
17687 +               compat_ptr(vc_data.data_ptr),
17688 +               id, &vc_data.index, &vc_data.count);
17689 +
17690 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17691 +               return -EFAULT;
17692 +       return ret;
17693 +}
17694 +
17695 +#endif /* CONFIG_COMPAT */
17696 +
17697 diff -NurpP --minimal linux-4.4.111/kernel/vserver/inet.c linux-4.4.111-vs2.3.9.5/kernel/vserver/inet.c
17698 --- linux-4.4.111/kernel/vserver/inet.c 1970-01-01 00:00:00.000000000 +0000
17699 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/inet.c       2018-01-09 16:36:34.000000000 +0000
17700 @@ -0,0 +1,236 @@
17701 +
17702 +#include <linux/in.h>
17703 +#include <linux/inetdevice.h>
17704 +#include <linux/export.h>
17705 +#include <linux/vs_inet.h>
17706 +#include <linux/vs_inet6.h>
17707 +#include <linux/vserver/debug.h>
17708 +#include <net/route.h>
17709 +#include <net/addrconf.h>
17710 +
17711 +
17712 +int nx_v4_addr_conflict(struct nx_info *nxi1, struct nx_info *nxi2)
17713 +{
17714 +       int ret = 0;
17715 +
17716 +       if (!nxi1 || !nxi2 || nxi1 == nxi2)
17717 +               ret = 1;
17718 +       else {
17719 +               struct nx_addr_v4 *ptr;
17720 +               unsigned long irqflags;
17721 +
17722 +               spin_lock_irqsave(&nxi1->addr_lock, irqflags);
17723 +               for (ptr = &nxi1->v4; ptr; ptr = ptr->next) {
17724 +                       if (v4_nx_addr_in_nx_info(nxi2, ptr, -1)) {
17725 +                               ret = 1;
17726 +                               break;
17727 +                       }
17728 +               }
17729 +               spin_unlock_irqrestore(&nxi1->addr_lock, irqflags);
17730 +       }
17731 +
17732 +       vxdprintk(VXD_CBIT(net, 2),
17733 +               "nx_v4_addr_conflict(%p,%p): %d",
17734 +               nxi1, nxi2, ret);
17735 +
17736 +       return ret;
17737 +}
17738 +
17739 +
17740 +#ifdef CONFIG_IPV6
17741 +
17742 +int nx_v6_addr_conflict(struct nx_info *nxi1, struct nx_info *nxi2)
17743 +{
17744 +       int ret = 0;
17745 +
17746 +       if (!nxi1 || !nxi2 || nxi1 == nxi2)
17747 +               ret = 1;
17748 +       else {
17749 +               struct nx_addr_v6 *ptr;
17750 +               unsigned long irqflags;
17751 +
17752 +               spin_lock_irqsave(&nxi1->addr_lock, irqflags);
17753 +               for (ptr = &nxi1->v6; ptr; ptr = ptr->next) {
17754 +                       if (v6_nx_addr_in_nx_info(nxi2, ptr, -1)) {
17755 +                               ret = 1;
17756 +                               break;
17757 +                       }
17758 +               }
17759 +               spin_unlock_irqrestore(&nxi1->addr_lock, irqflags);
17760 +       }
17761 +
17762 +       vxdprintk(VXD_CBIT(net, 2),
17763 +               "nx_v6_addr_conflict(%p,%p): %d",
17764 +               nxi1, nxi2, ret);
17765 +
17766 +       return ret;
17767 +}
17768 +
17769 +#endif
17770 +
17771 +int v4_dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17772 +{
17773 +       struct in_device *in_dev;
17774 +       struct in_ifaddr **ifap;
17775 +       struct in_ifaddr *ifa;
17776 +       int ret = 0;
17777 +
17778 +       if (!dev)
17779 +               goto out;
17780 +       in_dev = in_dev_get(dev);
17781 +       if (!in_dev)
17782 +               goto out;
17783 +
17784 +       for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
17785 +               ifap = &ifa->ifa_next) {
17786 +               if (v4_addr_in_nx_info(nxi, ifa->ifa_local, NXA_MASK_SHOW)) {
17787 +                       ret = 1;
17788 +                       break;
17789 +               }
17790 +       }
17791 +       in_dev_put(in_dev);
17792 +out:
17793 +       return ret;
17794 +}
17795 +
17796 +
17797 +#ifdef CONFIG_IPV6
17798 +
17799 +int v6_dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17800 +{
17801 +       struct inet6_dev *in_dev;
17802 +       struct inet6_ifaddr *ifa;
17803 +       int ret = 0;
17804 +
17805 +       if (!dev)
17806 +               goto out;
17807 +       in_dev = in6_dev_get(dev);
17808 +       if (!in_dev)
17809 +               goto out;
17810 +
17811 +       // for (ifap = &in_dev->addr_list; (ifa = *ifap) != NULL;
17812 +       list_for_each_entry(ifa, &in_dev->addr_list, if_list) {
17813 +               if (v6_addr_in_nx_info(nxi, &ifa->addr, -1)) {
17814 +                       ret = 1;
17815 +                       break;
17816 +               }
17817 +       }
17818 +       in6_dev_put(in_dev);
17819 +out:
17820 +       return ret;
17821 +}
17822 +
17823 +#endif
17824 +
17825 +int dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17826 +{
17827 +       int ret = 1;
17828 +
17829 +       if (!nxi)
17830 +               goto out;
17831 +       if (nxi->v4.type && v4_dev_in_nx_info(dev, nxi))
17832 +               goto out;
17833 +#ifdef CONFIG_IPV6
17834 +       ret = 2;
17835 +       if (nxi->v6.type && v6_dev_in_nx_info(dev, nxi))
17836 +               goto out;
17837 +#endif
17838 +       ret = 0;
17839 +out:
17840 +       vxdprintk(VXD_CBIT(net, 3),
17841 +               "dev_in_nx_info(%p,%p[#%d]) = %d",
17842 +               dev, nxi, nxi ? nxi->nx_id : 0, ret);
17843 +       return ret;
17844 +}
17845 +
17846 +struct rtable *ip_v4_find_src(struct net *net, struct nx_info *nxi,
17847 +       struct flowi4 *fl4)
17848 +{
17849 +       struct rtable *rt;
17850 +
17851 +       if (!nxi)
17852 +               return NULL;
17853 +
17854 +       /* FIXME: handle lback only case */
17855 +       if (!NX_IPV4(nxi))
17856 +               return ERR_PTR(-EPERM);
17857 +
17858 +       vxdprintk(VXD_CBIT(net, 4),
17859 +               "ip_v4_find_src(%p[#%u]) " NIPQUAD_FMT " -> " NIPQUAD_FMT,
17860 +               nxi, nxi ? nxi->nx_id : 0,
17861 +               NIPQUAD(fl4->saddr), NIPQUAD(fl4->daddr));
17862 +
17863 +       /* single IP is unconditional */
17864 +       if (nx_info_flags(nxi, NXF_SINGLE_IP, 0) &&
17865 +               (fl4->saddr == INADDR_ANY))
17866 +               fl4->saddr = nxi->v4.ip[0].s_addr;
17867 +
17868 +       if (fl4->saddr == INADDR_ANY) {
17869 +               struct nx_addr_v4 *ptr;
17870 +               __be32 found = 0;
17871 +
17872 +               rt = __ip_route_output_key(net, fl4);
17873 +               if (!IS_ERR(rt)) {
17874 +                       found = fl4->saddr;
17875 +                       ip_rt_put(rt);
17876 +                       vxdprintk(VXD_CBIT(net, 4),
17877 +                               "ip_v4_find_src(%p[#%u]) rok[%u]: " NIPQUAD_FMT,
17878 +                               nxi, nxi ? nxi->nx_id : 0, fl4->flowi4_oif, NIPQUAD(found));
17879 +                       if (v4_addr_in_nx_info(nxi, found, NXA_MASK_BIND))
17880 +                               goto found;
17881 +               }
17882 +
17883 +               WARN_ON_ONCE(in_irq());
17884 +               spin_lock_bh(&nxi->addr_lock);
17885 +               for (ptr = &nxi->v4; ptr; ptr = ptr->next) {
17886 +                       __be32 primary = ptr->ip[0].s_addr;
17887 +                       __be32 mask = ptr->mask.s_addr;
17888 +                       __be32 neta = primary & mask;
17889 +
17890 +                       vxdprintk(VXD_CBIT(net, 4), "ip_v4_find_src(%p[#%u]) chk: "
17891 +                               NIPQUAD_FMT "/" NIPQUAD_FMT "/" NIPQUAD_FMT,
17892 +                               nxi, nxi ? nxi->nx_id : 0, NIPQUAD(primary),
17893 +                               NIPQUAD(mask), NIPQUAD(neta));
17894 +                       if ((found & mask) != neta)
17895 +                               continue;
17896 +
17897 +                       fl4->saddr = primary;
17898 +                       rt = __ip_route_output_key(net, fl4);
17899 +                       vxdprintk(VXD_CBIT(net, 4),
17900 +                               "ip_v4_find_src(%p[#%u]) rok[%u]: " NIPQUAD_FMT,
17901 +                               nxi, nxi ? nxi->nx_id : 0, fl4->flowi4_oif, NIPQUAD(primary));
17902 +                       if (!IS_ERR(rt)) {
17903 +                               found = fl4->saddr;
17904 +                               ip_rt_put(rt);
17905 +                               if (found == primary)
17906 +                                       goto found_unlock;
17907 +                       }
17908 +               }
17909 +               /* still no source ip? */
17910 +               found = ipv4_is_loopback(fl4->daddr)
17911 +                       ? IPI_LOOPBACK : nxi->v4.ip[0].s_addr;
17912 +       found_unlock:
17913 +               spin_unlock_bh(&nxi->addr_lock);
17914 +       found:
17915 +               /* assign src ip to flow */
17916 +               fl4->saddr = found;
17917 +
17918 +       } else {
17919 +               if (!v4_addr_in_nx_info(nxi, fl4->saddr, NXA_MASK_BIND))
17920 +                       return ERR_PTR(-EPERM);
17921 +       }
17922 +
17923 +       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0)) {
17924 +               if (ipv4_is_loopback(fl4->daddr))
17925 +                       fl4->daddr = nxi->v4_lback.s_addr;
17926 +               if (ipv4_is_loopback(fl4->saddr))
17927 +                       fl4->saddr = nxi->v4_lback.s_addr;
17928 +       } else if (ipv4_is_loopback(fl4->daddr) &&
17929 +               !nx_info_flags(nxi, NXF_LBACK_ALLOW, 0))
17930 +               return ERR_PTR(-EPERM);
17931 +
17932 +       return NULL;
17933 +}
17934 +
17935 +EXPORT_SYMBOL_GPL(ip_v4_find_src);
17936 +
17937 diff -NurpP --minimal linux-4.4.111/kernel/vserver/init.c linux-4.4.111-vs2.3.9.5/kernel/vserver/init.c
17938 --- linux-4.4.111/kernel/vserver/init.c 1970-01-01 00:00:00.000000000 +0000
17939 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/init.c       2018-01-09 22:31:39.000000000 +0000
17940 @@ -0,0 +1,46 @@
17941 +/*
17942 + *  linux/kernel/init.c
17943 + *
17944 + *  Virtual Server Init
17945 + *
17946 + *  Copyright (C) 2004-2007  Herbert P?tzl
17947 + *
17948 + *  V0.01  basic structure
17949 + *
17950 + */
17951 +
17952 +#include <linux/init.h>
17953 +#include <linux/module.h>
17954 +
17955 +int    vserver_register_sysctl(void);
17956 +void   vserver_unregister_sysctl(void);
17957 +
17958 +
17959 +static int __init init_vserver(void)
17960 +{
17961 +       int ret = 0;
17962 +
17963 +#ifdef CONFIG_VSERVER_DEBUG
17964 +       vserver_register_sysctl();
17965 +#endif
17966 +       return ret;
17967 +}
17968 +
17969 +
17970 +static void __exit exit_vserver(void)
17971 +{
17972 +
17973 +#ifdef CONFIG_VSERVER_DEBUG
17974 +       vserver_unregister_sysctl();
17975 +#endif
17976 +       return;
17977 +}
17978 +
17979 +/* FIXME: GFP_ZONETYPES gone
17980 +long vx_slab[GFP_ZONETYPES]; */
17981 +long vx_area;
17982 +
17983 +
17984 +module_init(init_vserver);
17985 +module_exit(exit_vserver);
17986 +
17987 diff -NurpP --minimal linux-4.4.111/kernel/vserver/inode.c linux-4.4.111-vs2.3.9.5/kernel/vserver/inode.c
17988 --- linux-4.4.111/kernel/vserver/inode.c        1970-01-01 00:00:00.000000000 +0000
17989 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/inode.c      2018-01-09 22:24:56.000000000 +0000
17990 @@ -0,0 +1,440 @@
17991 +/*
17992 + *  linux/kernel/vserver/inode.c
17993 + *
17994 + *  Virtual Server: File System Support
17995 + *
17996 + *  Copyright (C) 2004-2007  Herbert P?tzl
17997 + *
17998 + *  V0.01  separated from vcontext V0.05
17999 + *  V0.02  moved to tag (instead of xid)
18000 + *
18001 + */
18002 +
18003 +#include <linux/tty.h>
18004 +#include <linux/proc_fs.h>
18005 +#include <linux/devpts_fs.h>
18006 +#include <linux/fs.h>
18007 +#include <linux/file.h>
18008 +#include <linux/mount.h>
18009 +#include <linux/parser.h>
18010 +#include <linux/namei.h>
18011 +#include <linux/magic.h>
18012 +#include <linux/slab.h>
18013 +#include <linux/vserver/inode.h>
18014 +#include <linux/vserver/inode_cmd.h>
18015 +#include <linux/vs_base.h>
18016 +#include <linux/vs_tag.h>
18017 +
18018 +#include <asm/uaccess.h>
18019 +#include <../../fs/proc/internal.h>
18020 +
18021 +
18022 +static int __vc_get_iattr(struct inode *in, uint32_t *tag, uint32_t *flags, uint32_t *mask)
18023 +{
18024 +       struct proc_dir_entry *entry;
18025 +
18026 +       if (!in || !in->i_sb)
18027 +               return -ESRCH;
18028 +
18029 +       *flags = IATTR_TAG
18030 +               | (IS_IMMUTABLE(in) ? IATTR_IMMUTABLE : 0)
18031 +               | (IS_IXUNLINK(in) ? IATTR_IXUNLINK : 0)
18032 +               | (IS_BARRIER(in) ? IATTR_BARRIER : 0)
18033 +               | (IS_COW(in) ? IATTR_COW : 0);
18034 +       *mask = IATTR_IXUNLINK | IATTR_IMMUTABLE | IATTR_COW;
18035 +
18036 +       if (S_ISDIR(in->i_mode))
18037 +               *mask |= IATTR_BARRIER;
18038 +
18039 +       if (IS_TAGGED(in)) {
18040 +               *tag = i_tag_read(in);
18041 +               *mask |= IATTR_TAG;
18042 +       }
18043 +
18044 +       switch (in->i_sb->s_magic) {
18045 +       case PROC_SUPER_MAGIC:
18046 +               entry = PROC_I(in)->pde;
18047 +
18048 +               /* check for specific inodes? */
18049 +               if (entry)
18050 +                       *mask |= IATTR_FLAGS;
18051 +               if (entry)
18052 +                       *flags |= (entry->vx_flags & IATTR_FLAGS);
18053 +               else
18054 +                       *flags |= (PROC_I(in)->vx_flags & IATTR_FLAGS);
18055 +               break;
18056 +
18057 +       case DEVPTS_SUPER_MAGIC:
18058 +               *tag = i_tag_read(in);
18059 +               *mask |= IATTR_TAG;
18060 +               break;
18061 +
18062 +       default:
18063 +               break;
18064 +       }
18065 +       return 0;
18066 +}
18067 +
18068 +int vc_get_iattr(void __user *data)
18069 +{
18070 +       struct path path;
18071 +       struct vcmd_ctx_iattr_v1 vc_data = { .tag = -1 };
18072 +       int ret;
18073 +
18074 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18075 +               return -EFAULT;
18076 +
18077 +       ret = user_lpath(vc_data.name, &path);
18078 +       if (!ret) {
18079 +               ret = __vc_get_iattr(path.dentry->d_inode,
18080 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18081 +               path_put(&path);
18082 +       }
18083 +       if (ret)
18084 +               return ret;
18085 +
18086 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18087 +               ret = -EFAULT;
18088 +       return ret;
18089 +}
18090 +
18091 +#ifdef CONFIG_COMPAT
18092 +
18093 +int vc_get_iattr_x32(void __user *data)
18094 +{
18095 +       struct path path;
18096 +       struct vcmd_ctx_iattr_v1_x32 vc_data = { .tag = -1 };
18097 +       int ret;
18098 +
18099 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18100 +               return -EFAULT;
18101 +
18102 +       ret = user_lpath(compat_ptr(vc_data.name_ptr), &path);
18103 +       if (!ret) {
18104 +               ret = __vc_get_iattr(path.dentry->d_inode,
18105 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18106 +               path_put(&path);
18107 +       }
18108 +       if (ret)
18109 +               return ret;
18110 +
18111 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18112 +               ret = -EFAULT;
18113 +       return ret;
18114 +}
18115 +
18116 +#endif /* CONFIG_COMPAT */
18117 +
18118 +
18119 +int vc_fget_iattr(uint32_t fd, void __user *data)
18120 +{
18121 +       struct file *filp;
18122 +       struct vcmd_ctx_fiattr_v0 vc_data = { .tag = -1 };
18123 +       int ret;
18124 +
18125 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18126 +               return -EFAULT;
18127 +
18128 +       filp = fget(fd);
18129 +       if (!filp || !filp->f_path.dentry || !filp->f_path.dentry->d_inode)
18130 +               return -EBADF;
18131 +
18132 +       ret = __vc_get_iattr(filp->f_path.dentry->d_inode,
18133 +               &vc_data.tag, &vc_data.flags, &vc_data.mask);
18134 +
18135 +       fput(filp);
18136 +
18137 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18138 +               ret = -EFAULT;
18139 +       return ret;
18140 +}
18141 +
18142 +
18143 +static int __vc_set_iattr(struct dentry *de, uint32_t *tag, uint32_t *flags, uint32_t *mask)
18144 +{
18145 +       struct inode *in = de->d_inode;
18146 +       int error = 0, is_proc = 0, has_tag = 0;
18147 +       struct iattr attr = { 0 };
18148 +
18149 +       if (!in || !in->i_sb)
18150 +               return -ESRCH;
18151 +
18152 +       is_proc = (in->i_sb->s_magic == PROC_SUPER_MAGIC);
18153 +       if ((*mask & IATTR_FLAGS) && !is_proc)
18154 +               return -EINVAL;
18155 +
18156 +       has_tag = IS_TAGGED(in) ||
18157 +               (in->i_sb->s_magic == DEVPTS_SUPER_MAGIC);
18158 +       if ((*mask & IATTR_TAG) && !has_tag)
18159 +               return -EINVAL;
18160 +
18161 +       mutex_lock(&in->i_mutex);
18162 +       if (*mask & IATTR_TAG) {
18163 +               attr.ia_tag = make_ktag(&init_user_ns, *tag);
18164 +               attr.ia_valid |= ATTR_TAG;
18165 +       }
18166 +
18167 +       if (*mask & IATTR_FLAGS) {
18168 +               struct proc_dir_entry *entry = PROC_I(in)->pde;
18169 +               unsigned int iflags = PROC_I(in)->vx_flags;
18170 +
18171 +               iflags = (iflags & ~(*mask & IATTR_FLAGS))
18172 +                       | (*flags & IATTR_FLAGS);
18173 +               PROC_I(in)->vx_flags = iflags;
18174 +               if (entry)
18175 +                       entry->vx_flags = iflags;
18176 +       }
18177 +
18178 +       if (*mask & (IATTR_IMMUTABLE | IATTR_IXUNLINK |
18179 +               IATTR_BARRIER | IATTR_COW)) {
18180 +               int iflags = in->i_flags;
18181 +               int vflags = in->i_vflags;
18182 +
18183 +               if (*mask & IATTR_IMMUTABLE) {
18184 +                       if (*flags & IATTR_IMMUTABLE)
18185 +                               iflags |= S_IMMUTABLE;
18186 +                       else
18187 +                               iflags &= ~S_IMMUTABLE;
18188 +               }
18189 +               if (*mask & IATTR_IXUNLINK) {
18190 +                       if (*flags & IATTR_IXUNLINK)
18191 +                               iflags |= S_IXUNLINK;
18192 +                       else
18193 +                               iflags &= ~S_IXUNLINK;
18194 +               }
18195 +               if (S_ISDIR(in->i_mode) && (*mask & IATTR_BARRIER)) {
18196 +                       if (*flags & IATTR_BARRIER)
18197 +                               vflags |= V_BARRIER;
18198 +                       else
18199 +                               vflags &= ~V_BARRIER;
18200 +               }
18201 +               if (S_ISREG(in->i_mode) && (*mask & IATTR_COW)) {
18202 +                       if (*flags & IATTR_COW)
18203 +                               vflags |= V_COW;
18204 +                       else
18205 +                               vflags &= ~V_COW;
18206 +               }
18207 +               if (in->i_op && in->i_op->sync_flags) {
18208 +                       error = in->i_op->sync_flags(in, iflags, vflags);
18209 +                       if (error)
18210 +                               goto out;
18211 +               }
18212 +       }
18213 +
18214 +       if (attr.ia_valid) {
18215 +               if (in->i_op && in->i_op->setattr)
18216 +                       error = in->i_op->setattr(de, &attr);
18217 +               else {
18218 +                       error = inode_change_ok(in, &attr);
18219 +                       if (!error) {
18220 +                               setattr_copy(in, &attr);
18221 +                               mark_inode_dirty(in);
18222 +                       }
18223 +               }
18224 +       }
18225 +
18226 +out:
18227 +       mutex_unlock(&in->i_mutex);
18228 +       return error;
18229 +}
18230 +
18231 +int vc_set_iattr(void __user *data)
18232 +{
18233 +       struct path path;
18234 +       struct vcmd_ctx_iattr_v1 vc_data;
18235 +       int ret;
18236 +
18237 +       if (!capable(CAP_LINUX_IMMUTABLE))
18238 +               return -EPERM;
18239 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18240 +               return -EFAULT;
18241 +
18242 +       ret = user_lpath(vc_data.name, &path);
18243 +       if (!ret) {
18244 +               ret = __vc_set_iattr(path.dentry,
18245 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18246 +               path_put(&path);
18247 +       }
18248 +
18249 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18250 +               ret = -EFAULT;
18251 +       return ret;
18252 +}
18253 +
18254 +#ifdef CONFIG_COMPAT
18255 +
18256 +int vc_set_iattr_x32(void __user *data)
18257 +{
18258 +       struct path path;
18259 +       struct vcmd_ctx_iattr_v1_x32 vc_data;
18260 +       int ret;
18261 +
18262 +       if (!capable(CAP_LINUX_IMMUTABLE))
18263 +               return -EPERM;
18264 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18265 +               return -EFAULT;
18266 +
18267 +       ret = user_lpath(compat_ptr(vc_data.name_ptr), &path);
18268 +       if (!ret) {
18269 +               ret = __vc_set_iattr(path.dentry,
18270 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18271 +               path_put(&path);
18272 +       }
18273 +
18274 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18275 +               ret = -EFAULT;
18276 +       return ret;
18277 +}
18278 +
18279 +#endif /* CONFIG_COMPAT */
18280 +
18281 +int vc_fset_iattr(uint32_t fd, void __user *data)
18282 +{
18283 +       struct file *filp;
18284 +       struct vcmd_ctx_fiattr_v0 vc_data;
18285 +       int ret;
18286 +
18287 +       if (!capable(CAP_LINUX_IMMUTABLE))
18288 +               return -EPERM;
18289 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18290 +               return -EFAULT;
18291 +
18292 +       filp = fget(fd);
18293 +       if (!filp || !filp->f_path.dentry || !filp->f_path.dentry->d_inode)
18294 +               return -EBADF;
18295 +
18296 +       ret = __vc_set_iattr(filp->f_path.dentry, &vc_data.tag,
18297 +               &vc_data.flags, &vc_data.mask);
18298 +
18299 +       fput(filp);
18300 +
18301 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18302 +               return -EFAULT;
18303 +       return ret;
18304 +}
18305 +
18306 +
18307 +enum { Opt_notagcheck, Opt_tag, Opt_notag, Opt_tagid, Opt_err };
18308 +
18309 +static match_table_t tokens = {
18310 +       {Opt_notagcheck, "notagcheck"},
18311 +#ifdef CONFIG_PROPAGATE
18312 +       {Opt_notag, "notag"},
18313 +       {Opt_tag, "tag"},
18314 +       {Opt_tagid, "tagid=%u"},
18315 +#endif
18316 +       {Opt_err, NULL}
18317 +};
18318 +
18319 +
18320 +static void __dx_parse_remove(char *string, char *opt)
18321 +{
18322 +       char *p = strstr(string, opt);
18323 +       char *q = p;
18324 +
18325 +       if (p) {
18326 +               while (*q != '\0' && *q != ',')
18327 +                       q++;
18328 +               while (*q)
18329 +                       *p++ = *q++;
18330 +               while (*p)
18331 +                       *p++ = '\0';
18332 +       }
18333 +}
18334 +
18335 +int dx_parse_tag(char *string, vtag_t *tag, int remove, int *mnt_flags,
18336 +                unsigned long *flags)
18337 +{
18338 +       int set = 0;
18339 +       substring_t args[MAX_OPT_ARGS];
18340 +       int token;
18341 +       char *s, *p, *opts;
18342 +#if defined(CONFIG_PROPAGATE) || defined(CONFIG_VSERVER_DEBUG)
18343 +       int option = 0;
18344 +#endif
18345 +
18346 +       if (!string)
18347 +               return 0;
18348 +       s = kstrdup(string, GFP_KERNEL | GFP_ATOMIC);
18349 +       if (!s)
18350 +               return 0;
18351 +
18352 +       opts = s;
18353 +       while ((p = strsep(&opts, ",")) != NULL) {
18354 +               token = match_token(p, tokens, args);
18355 +
18356 +               switch (token) {
18357 +#ifdef CONFIG_PROPAGATE
18358 +               case Opt_tag:
18359 +                       if (tag)
18360 +                               *tag = 0;
18361 +                       if (remove)
18362 +                               __dx_parse_remove(s, "tag");
18363 +                       *mnt_flags |= MNT_TAGID;
18364 +                       set |= MNT_TAGID;
18365 +                       break;
18366 +               case Opt_notag:
18367 +                       if (remove)
18368 +                               __dx_parse_remove(s, "notag");
18369 +                       *mnt_flags |= MNT_NOTAG;
18370 +                       set |= MNT_NOTAG;
18371 +                       break;
18372 +               case Opt_tagid:
18373 +                       if (tag && !match_int(args, &option))
18374 +                               *tag = option;
18375 +                       if (remove)
18376 +                               __dx_parse_remove(s, "tagid");
18377 +                       *mnt_flags |= MNT_TAGID;
18378 +                       set |= MNT_TAGID;
18379 +                       break;
18380 +#endif /* CONFIG_PROPAGATE */
18381 +               case Opt_notagcheck:
18382 +                       if (remove)
18383 +                               __dx_parse_remove(s, "notagcheck");
18384 +                       *flags |= MS_NOTAGCHECK;
18385 +                       set |= MS_NOTAGCHECK;
18386 +                       break;
18387 +               }
18388 +               vxdprintk(VXD_CBIT(tag, 7),
18389 +                       "dx_parse_tag(" VS_Q("%s") "): %d:#%d",
18390 +                       p, token, option);
18391 +       }
18392 +       if (set)
18393 +               strcpy(string, s);
18394 +       kfree(s);
18395 +       return set;
18396 +}
18397 +
18398 +#ifdef CONFIG_PROPAGATE
18399 +
18400 +void __dx_propagate_tag(struct nameidata *nd, struct inode *inode)
18401 +{
18402 +       vtag_t new_tag = 0;
18403 +       struct vfsmount *mnt;
18404 +       int propagate;
18405 +
18406 +       if (!nd)
18407 +               return;
18408 +       mnt = nd->path.mnt;
18409 +       if (!mnt)
18410 +               return;
18411 +
18412 +       propagate = (mnt->mnt_flags & MNT_TAGID);
18413 +       if (propagate)
18414 +               new_tag = mnt->mnt_tag;
18415 +
18416 +       vxdprintk(VXD_CBIT(tag, 7),
18417 +               "dx_propagate_tag(%p[#%lu.%d]): %d,%d",
18418 +               inode, inode->i_ino, inode->i_tag,
18419 +               new_tag, (propagate) ? 1 : 0);
18420 +
18421 +       if (propagate)
18422 +               i_tag_write(inode, new_tag);
18423 +}
18424 +
18425 +#include <linux/module.h>
18426 +
18427 +EXPORT_SYMBOL_GPL(__dx_propagate_tag);
18428 +
18429 +#endif /* CONFIG_PROPAGATE */
18430 +
18431 diff -NurpP --minimal linux-4.4.111/kernel/vserver/limit.c linux-4.4.111-vs2.3.9.5/kernel/vserver/limit.c
18432 --- linux-4.4.111/kernel/vserver/limit.c        1970-01-01 00:00:00.000000000 +0000
18433 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/limit.c      2018-01-09 16:36:34.000000000 +0000
18434 @@ -0,0 +1,343 @@
18435 +/*
18436 + *  linux/kernel/vserver/limit.c
18437 + *
18438 + *  Virtual Server: Context Limits
18439 + *
18440 + *  Copyright (C) 2004-2010  Herbert P?tzl
18441 + *
18442 + *  V0.01  broken out from vcontext V0.05
18443 + *  V0.02  changed vcmds to vxi arg
18444 + *  V0.03  added memory cgroup support
18445 + *
18446 + */
18447 +
18448 +#include <linux/sched.h>
18449 +#include <linux/module.h>
18450 +#include <linux/memcontrol.h>
18451 +#include <linux/page_counter.h>
18452 +#include <linux/vs_limit.h>
18453 +#include <linux/vserver/limit.h>
18454 +#include <linux/vserver/limit_cmd.h>
18455 +
18456 +#include <asm/uaccess.h>
18457 +
18458 +
18459 +const char *vlimit_name[NUM_LIMITS] = {
18460 +       [RLIMIT_CPU]            = "CPU",
18461 +       [RLIMIT_NPROC]          = "NPROC",
18462 +       [RLIMIT_NOFILE]         = "NOFILE",
18463 +       [RLIMIT_LOCKS]          = "LOCKS",
18464 +       [RLIMIT_SIGPENDING]     = "SIGP",
18465 +       [RLIMIT_MSGQUEUE]       = "MSGQ",
18466 +
18467 +       [VLIMIT_NSOCK]          = "NSOCK",
18468 +       [VLIMIT_OPENFD]         = "OPENFD",
18469 +       [VLIMIT_SHMEM]          = "SHMEM",
18470 +       [VLIMIT_DENTRY]         = "DENTRY",
18471 +};
18472 +
18473 +EXPORT_SYMBOL_GPL(vlimit_name);
18474 +
18475 +#define MASK_ENTRY(x)  (1 << (x))
18476 +
18477 +const struct vcmd_ctx_rlimit_mask_v0 vlimit_mask = {
18478 +               /* minimum */
18479 +       0
18480 +       ,       /* softlimit */
18481 +       0
18482 +       ,       /* maximum */
18483 +       MASK_ENTRY( RLIMIT_NPROC        ) |
18484 +       MASK_ENTRY( RLIMIT_NOFILE       ) |
18485 +       MASK_ENTRY( RLIMIT_LOCKS        ) |
18486 +       MASK_ENTRY( RLIMIT_MSGQUEUE     ) |
18487 +
18488 +       MASK_ENTRY( VLIMIT_NSOCK        ) |
18489 +       MASK_ENTRY( VLIMIT_OPENFD       ) |
18490 +       MASK_ENTRY( VLIMIT_SHMEM        ) |
18491 +       MASK_ENTRY( VLIMIT_DENTRY       ) |
18492 +       0
18493 +};
18494 +               /* accounting only */
18495 +uint32_t account_mask =
18496 +       MASK_ENTRY( VLIMIT_SEMARY       ) |
18497 +       MASK_ENTRY( VLIMIT_NSEMS        ) |
18498 +       MASK_ENTRY( VLIMIT_MAPPED       ) |
18499 +       0;
18500 +
18501 +
18502 +static int is_valid_vlimit(int id)
18503 +{
18504 +       uint32_t mask = vlimit_mask.minimum |
18505 +               vlimit_mask.softlimit | vlimit_mask.maximum;
18506 +       return mask & (1 << id);
18507 +}
18508 +
18509 +static int is_accounted_vlimit(int id)
18510 +{
18511 +       if (is_valid_vlimit(id))
18512 +               return 1;
18513 +       return account_mask & (1 << id);
18514 +}
18515 +
18516 +
18517 +static inline uint64_t vc_get_soft(struct vx_info *vxi, int id)
18518 +{
18519 +       rlim_t limit = __rlim_soft(&vxi->limit, id);
18520 +       return VX_VLIM(limit);
18521 +}
18522 +
18523 +static inline uint64_t vc_get_hard(struct vx_info *vxi, int id)
18524 +{
18525 +       rlim_t limit = __rlim_hard(&vxi->limit, id);
18526 +       return VX_VLIM(limit);
18527 +}
18528 +
18529 +static int do_get_rlimit(struct vx_info *vxi, uint32_t id,
18530 +       uint64_t *minimum, uint64_t *softlimit, uint64_t *maximum)
18531 +{
18532 +       if (!is_valid_vlimit(id))
18533 +               return -EINVAL;
18534 +
18535 +       if (minimum)
18536 +               *minimum = CRLIM_UNSET;
18537 +       if (softlimit)
18538 +               *softlimit = vc_get_soft(vxi, id);
18539 +       if (maximum)
18540 +               *maximum = vc_get_hard(vxi, id);
18541 +       return 0;
18542 +}
18543 +
18544 +int vc_get_rlimit(struct vx_info *vxi, void __user *data)
18545 +{
18546 +       struct vcmd_ctx_rlimit_v0 vc_data;
18547 +       int ret;
18548 +
18549 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18550 +               return -EFAULT;
18551 +
18552 +       ret = do_get_rlimit(vxi, vc_data.id,
18553 +               &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
18554 +       if (ret)
18555 +               return ret;
18556 +
18557 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18558 +               return -EFAULT;
18559 +       return 0;
18560 +}
18561 +
18562 +static int do_set_rlimit(struct vx_info *vxi, uint32_t id,
18563 +       uint64_t minimum, uint64_t softlimit, uint64_t maximum)
18564 +{
18565 +       if (!is_valid_vlimit(id))
18566 +               return -EINVAL;
18567 +
18568 +       if (maximum != CRLIM_KEEP)
18569 +               __rlim_hard(&vxi->limit, id) = VX_RLIM(maximum);
18570 +       if (softlimit != CRLIM_KEEP)
18571 +               __rlim_soft(&vxi->limit, id) = VX_RLIM(softlimit);
18572 +
18573 +       /* clamp soft limit */
18574 +       if (__rlim_soft(&vxi->limit, id) > __rlim_hard(&vxi->limit, id))
18575 +               __rlim_soft(&vxi->limit, id) = __rlim_hard(&vxi->limit, id);
18576 +
18577 +       return 0;
18578 +}
18579 +
18580 +int vc_set_rlimit(struct vx_info *vxi, void __user *data)
18581 +{
18582 +       struct vcmd_ctx_rlimit_v0 vc_data;
18583 +
18584 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18585 +               return -EFAULT;
18586 +
18587 +       return do_set_rlimit(vxi, vc_data.id,
18588 +               vc_data.minimum, vc_data.softlimit, vc_data.maximum);
18589 +}
18590 +
18591 +#ifdef CONFIG_IA32_EMULATION
18592 +
18593 +int vc_set_rlimit_x32(struct vx_info *vxi, void __user *data)
18594 +{
18595 +       struct vcmd_ctx_rlimit_v0_x32 vc_data;
18596 +
18597 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18598 +               return -EFAULT;
18599 +
18600 +       return do_set_rlimit(vxi, vc_data.id,
18601 +               vc_data.minimum, vc_data.softlimit, vc_data.maximum);
18602 +}
18603 +
18604 +int vc_get_rlimit_x32(struct vx_info *vxi, void __user *data)
18605 +{
18606 +       struct vcmd_ctx_rlimit_v0_x32 vc_data;
18607 +       int ret;
18608 +
18609 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18610 +               return -EFAULT;
18611 +
18612 +       ret = do_get_rlimit(vxi, vc_data.id,
18613 +               &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
18614 +       if (ret)
18615 +               return ret;
18616 +
18617 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18618 +               return -EFAULT;
18619 +       return 0;
18620 +}
18621 +
18622 +#endif /* CONFIG_IA32_EMULATION */
18623 +
18624 +
18625 +int vc_get_rlimit_mask(uint32_t id, void __user *data)
18626 +{
18627 +       if (copy_to_user(data, &vlimit_mask, sizeof(vlimit_mask)))
18628 +               return -EFAULT;
18629 +       return 0;
18630 +}
18631 +
18632 +
18633 +static inline void vx_reset_hits(struct _vx_limit *limit)
18634 +{
18635 +       int lim;
18636 +
18637 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18638 +               atomic_set(&__rlim_lhit(limit, lim), 0);
18639 +       }
18640 +}
18641 +
18642 +int vc_reset_hits(struct vx_info *vxi, void __user *data)
18643 +{
18644 +       vx_reset_hits(&vxi->limit);
18645 +       return 0;
18646 +}
18647 +
18648 +static inline void vx_reset_minmax(struct _vx_limit *limit)
18649 +{
18650 +       rlim_t value;
18651 +       int lim;
18652 +
18653 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18654 +               value = __rlim_get(limit, lim);
18655 +               __rlim_rmax(limit, lim) = value;
18656 +               __rlim_rmin(limit, lim) = value;
18657 +       }
18658 +}
18659 +
18660 +int vc_reset_minmax(struct vx_info *vxi, void __user *data)
18661 +{
18662 +       vx_reset_minmax(&vxi->limit);
18663 +       return 0;
18664 +}
18665 +
18666 +
18667 +int vc_rlimit_stat(struct vx_info *vxi, void __user *data)
18668 +{
18669 +       struct vcmd_rlimit_stat_v0 vc_data;
18670 +       struct _vx_limit *limit = &vxi->limit;
18671 +       int id;
18672 +
18673 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18674 +               return -EFAULT;
18675 +
18676 +       id = vc_data.id;
18677 +       if (!is_accounted_vlimit(id))
18678 +               return -EINVAL;
18679 +
18680 +       vx_limit_fixup(limit, id);
18681 +       vc_data.hits = atomic_read(&__rlim_lhit(limit, id));
18682 +       vc_data.value = __rlim_get(limit, id);
18683 +       vc_data.minimum = __rlim_rmin(limit, id);
18684 +       vc_data.maximum = __rlim_rmax(limit, id);
18685 +
18686 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18687 +               return -EFAULT;
18688 +       return 0;
18689 +}
18690 +
18691 +
18692 +#ifdef CONFIG_MEMCG
18693 +void vx_vsi_meminfo(struct sysinfo *val)
18694 +{
18695 +       struct mem_cgroup *mcg;
18696 +       u64 res_limit, res_usage;
18697 +
18698 +       rcu_read_lock();
18699 +       mcg = mem_cgroup_from_task(current);
18700 +       rcu_read_unlock();
18701 +       if (!mcg)
18702 +               goto out;
18703 +
18704 +       res_limit = mem_cgroup_mem_limit_pages(mcg);
18705 +       res_usage = mem_cgroup_mem_usage_pages(mcg);
18706 +
18707 +       if (res_limit != PAGE_COUNTER_MAX)
18708 +               val->totalram = res_limit;
18709 +       val->freeram = val->totalram - res_usage;
18710 +       val->bufferram = 0;
18711 +       val->totalhigh = 0;
18712 +       val->freehigh = 0;
18713 +out:
18714 +       return;
18715 +}
18716 +
18717 +void vx_vsi_swapinfo(struct sysinfo *val)
18718 +{
18719 +#ifdef CONFIG_MEMCG_SWAP
18720 +       struct mem_cgroup *mcg;
18721 +       u64 res_limit, res_usage, memsw_limit, memsw_usage;
18722 +       s64 swap_limit, swap_usage;
18723 +
18724 +       rcu_read_lock();
18725 +       mcg = mem_cgroup_from_task(current);
18726 +       rcu_read_unlock();
18727 +       if (!mcg)
18728 +               goto out;
18729 +
18730 +       res_limit = mem_cgroup_mem_limit_pages(mcg);
18731 +       res_usage = mem_cgroup_mem_usage_pages(mcg);
18732 +       memsw_limit = mem_cgroup_memsw_limit_pages(mcg);
18733 +       memsw_usage = mem_cgroup_memsw_usage_pages(mcg);
18734 +
18735 +       /* memory unlimited */
18736 +       if (res_limit == PAGE_COUNTER_MAX)
18737 +               goto out;
18738 +
18739 +       swap_limit = memsw_limit - res_limit;
18740 +       /* we have a swap limit? */
18741 +       if (memsw_limit != PAGE_COUNTER_MAX)
18742 +               val->totalswap = swap_limit;
18743 +
18744 +       /* calculate swap part */
18745 +       swap_usage = (memsw_usage > res_usage) ?
18746 +               memsw_usage - res_usage : 0;
18747 +
18748 +       /* total shown minus usage gives free swap */
18749 +       val->freeswap = (swap_usage < swap_limit) ?
18750 +               val->totalswap - swap_usage : 0;
18751 +out:
18752 +#else  /* !CONFIG_MEMCG_SWAP */
18753 +       val->totalswap = 0;
18754 +       val->freeswap = 0;
18755 +#endif /* !CONFIG_MEMCG_SWAP */
18756 +       return;
18757 +}
18758 +
18759 +long vx_vsi_cached(struct sysinfo *val)
18760 +{
18761 +       long cache = 0;
18762 +#ifdef CONFIG_MEMCG_BROKEN
18763 +       struct mem_cgroup *mcg;
18764 +
18765 +       rcu_read_lock();
18766 +       mcg = mem_cgroup_from_task(current);
18767 +       rcu_read_unlock();
18768 +       if (!mcg)
18769 +               goto out;
18770 +
18771 +       // cache = mem_cgroup_stat_read_cache(mcg);
18772 +out:
18773 +#endif
18774 +       return cache;
18775 +}
18776 +#endif /* !CONFIG_MEMCG */
18777 +
18778 diff -NurpP --minimal linux-4.4.111/kernel/vserver/limit_init.h linux-4.4.111-vs2.3.9.5/kernel/vserver/limit_init.h
18779 --- linux-4.4.111/kernel/vserver/limit_init.h   1970-01-01 00:00:00.000000000 +0000
18780 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/limit_init.h 2018-01-09 16:36:34.000000000 +0000
18781 @@ -0,0 +1,31 @@
18782 +
18783 +
18784 +static inline void vx_info_init_limit(struct _vx_limit *limit)
18785 +{
18786 +       int lim;
18787 +
18788 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18789 +               __rlim_soft(limit, lim) = RLIM_INFINITY;
18790 +               __rlim_hard(limit, lim) = RLIM_INFINITY;
18791 +               __rlim_set(limit, lim, 0);
18792 +               atomic_set(&__rlim_lhit(limit, lim), 0);
18793 +               __rlim_rmin(limit, lim) = 0;
18794 +               __rlim_rmax(limit, lim) = 0;
18795 +       }
18796 +}
18797 +
18798 +static inline void vx_info_exit_limit(struct _vx_limit *limit)
18799 +{
18800 +       rlim_t value;
18801 +       int lim;
18802 +
18803 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18804 +               if ((1 << lim) & VLIM_NOCHECK)
18805 +                       continue;
18806 +               value = __rlim_get(limit, lim);
18807 +               vxwprintk_xid(value,
18808 +                       "!!! limit: %p[%s,%d] = %ld on exit.",
18809 +                       limit, vlimit_name[lim], lim, (long)value);
18810 +       }
18811 +}
18812 +
18813 diff -NurpP --minimal linux-4.4.111/kernel/vserver/limit_proc.h linux-4.4.111-vs2.3.9.5/kernel/vserver/limit_proc.h
18814 --- linux-4.4.111/kernel/vserver/limit_proc.h   1970-01-01 00:00:00.000000000 +0000
18815 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/limit_proc.h 2018-01-09 16:36:34.000000000 +0000
18816 @@ -0,0 +1,57 @@
18817 +#ifndef _VX_LIMIT_PROC_H
18818 +#define _VX_LIMIT_PROC_H
18819 +
18820 +#include <linux/vserver/limit_int.h>
18821 +
18822 +
18823 +#define VX_LIMIT_FMT   ":\t%8ld\t%8ld/%8ld\t%8lld/%8lld\t%6d\n"
18824 +#define VX_LIMIT_TOP   \
18825 +       "Limit\t current\t     min/max\t\t    soft/hard\t\thits\n"
18826 +
18827 +#define VX_LIMIT_ARG(r)                                \
18828 +       (unsigned long)__rlim_get(limit, r),    \
18829 +       (unsigned long)__rlim_rmin(limit, r),   \
18830 +       (unsigned long)__rlim_rmax(limit, r),   \
18831 +       VX_VLIM(__rlim_soft(limit, r)),         \
18832 +       VX_VLIM(__rlim_hard(limit, r)),         \
18833 +       atomic_read(&__rlim_lhit(limit, r))
18834 +
18835 +static inline int vx_info_proc_limit(struct _vx_limit *limit, char *buffer)
18836 +{
18837 +       vx_limit_fixup(limit, -1);
18838 +       return sprintf(buffer, VX_LIMIT_TOP
18839 +               "PROC"  VX_LIMIT_FMT
18840 +               "VM"    VX_LIMIT_FMT
18841 +               "VML"   VX_LIMIT_FMT
18842 +               "RSS"   VX_LIMIT_FMT
18843 +               "ANON"  VX_LIMIT_FMT
18844 +               "RMAP"  VX_LIMIT_FMT
18845 +               "FILES" VX_LIMIT_FMT
18846 +               "OFD"   VX_LIMIT_FMT
18847 +               "LOCKS" VX_LIMIT_FMT
18848 +               "SOCK"  VX_LIMIT_FMT
18849 +               "MSGQ"  VX_LIMIT_FMT
18850 +               "SHM"   VX_LIMIT_FMT
18851 +               "SEMA"  VX_LIMIT_FMT
18852 +               "SEMS"  VX_LIMIT_FMT
18853 +               "DENT"  VX_LIMIT_FMT,
18854 +               VX_LIMIT_ARG(RLIMIT_NPROC),
18855 +               VX_LIMIT_ARG(RLIMIT_AS),
18856 +               VX_LIMIT_ARG(RLIMIT_MEMLOCK),
18857 +               VX_LIMIT_ARG(RLIMIT_RSS),
18858 +               VX_LIMIT_ARG(VLIMIT_ANON),
18859 +               VX_LIMIT_ARG(VLIMIT_MAPPED),
18860 +               VX_LIMIT_ARG(RLIMIT_NOFILE),
18861 +               VX_LIMIT_ARG(VLIMIT_OPENFD),
18862 +               VX_LIMIT_ARG(RLIMIT_LOCKS),
18863 +               VX_LIMIT_ARG(VLIMIT_NSOCK),
18864 +               VX_LIMIT_ARG(RLIMIT_MSGQUEUE),
18865 +               VX_LIMIT_ARG(VLIMIT_SHMEM),
18866 +               VX_LIMIT_ARG(VLIMIT_SEMARY),
18867 +               VX_LIMIT_ARG(VLIMIT_NSEMS),
18868 +               VX_LIMIT_ARG(VLIMIT_DENTRY));
18869 +}
18870 +
18871 +#endif /* _VX_LIMIT_PROC_H */
18872 +
18873 +
18874 diff -NurpP --minimal linux-4.4.111/kernel/vserver/network.c linux-4.4.111-vs2.3.9.5/kernel/vserver/network.c
18875 --- linux-4.4.111/kernel/vserver/network.c      1970-01-01 00:00:00.000000000 +0000
18876 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/network.c    2018-01-09 16:36:34.000000000 +0000
18877 @@ -0,0 +1,1053 @@
18878 +/*
18879 + *  linux/kernel/vserver/network.c
18880 + *
18881 + *  Virtual Server: Network Support
18882 + *
18883 + *  Copyright (C) 2003-2007  Herbert P?tzl
18884 + *
18885 + *  V0.01  broken out from vcontext V0.05
18886 + *  V0.02  cleaned up implementation
18887 + *  V0.03  added equiv nx commands
18888 + *  V0.04  switch to RCU based hash
18889 + *  V0.05  and back to locking again
18890 + *  V0.06  changed vcmds to nxi arg
18891 + *  V0.07  have __create claim() the nxi
18892 + *
18893 + */
18894 +
18895 +#include <linux/err.h>
18896 +#include <linux/slab.h>
18897 +#include <linux/rcupdate.h>
18898 +#include <net/ipv6.h>
18899 +
18900 +#include <linux/vs_network.h>
18901 +#include <linux/vs_pid.h>
18902 +#include <linux/vserver/network_cmd.h>
18903 +
18904 +
18905 +atomic_t nx_global_ctotal      = ATOMIC_INIT(0);
18906 +atomic_t nx_global_cactive     = ATOMIC_INIT(0);
18907 +
18908 +static struct kmem_cache *nx_addr_v4_cachep = NULL;
18909 +static struct kmem_cache *nx_addr_v6_cachep = NULL;
18910 +
18911 +
18912 +static int __init init_network(void)
18913 +{
18914 +       nx_addr_v4_cachep = kmem_cache_create("nx_v4_addr_cache",
18915 +               sizeof(struct nx_addr_v4), 0,
18916 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
18917 +       nx_addr_v6_cachep = kmem_cache_create("nx_v6_addr_cache",
18918 +               sizeof(struct nx_addr_v6), 0,
18919 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
18920 +       return 0;
18921 +}
18922 +
18923 +
18924 +/*     __alloc_nx_addr_v4()                                    */
18925 +
18926 +static inline struct nx_addr_v4 *__alloc_nx_addr_v4(void)
18927 +{
18928 +       struct nx_addr_v4 *nxa = kmem_cache_alloc(
18929 +               nx_addr_v4_cachep, GFP_KERNEL);
18930 +
18931 +       if (!IS_ERR(nxa))
18932 +               memset(nxa, 0, sizeof(*nxa));
18933 +       return nxa;
18934 +}
18935 +
18936 +/*     __dealloc_nx_addr_v4()                                  */
18937 +
18938 +static inline void __dealloc_nx_addr_v4(struct nx_addr_v4 *nxa)
18939 +{
18940 +       kmem_cache_free(nx_addr_v4_cachep, nxa);
18941 +}
18942 +
18943 +/*     __dealloc_nx_addr_v4_all()                              */
18944 +
18945 +static inline void __dealloc_nx_addr_v4_all(struct nx_addr_v4 *nxa)
18946 +{
18947 +       while (nxa) {
18948 +               struct nx_addr_v4 *next = nxa->next;
18949 +
18950 +               __dealloc_nx_addr_v4(nxa);
18951 +               nxa = next;
18952 +       }
18953 +}
18954 +
18955 +
18956 +#ifdef CONFIG_IPV6
18957 +
18958 +/*     __alloc_nx_addr_v6()                                    */
18959 +
18960 +static inline struct nx_addr_v6 *__alloc_nx_addr_v6(void)
18961 +{
18962 +       struct nx_addr_v6 *nxa = kmem_cache_alloc(
18963 +               nx_addr_v6_cachep, GFP_KERNEL);
18964 +
18965 +       if (!IS_ERR(nxa))
18966 +               memset(nxa, 0, sizeof(*nxa));
18967 +       return nxa;
18968 +}
18969 +
18970 +/*     __dealloc_nx_addr_v6()                                  */
18971 +
18972 +static inline void __dealloc_nx_addr_v6(struct nx_addr_v6 *nxa)
18973 +{
18974 +       kmem_cache_free(nx_addr_v6_cachep, nxa);
18975 +}
18976 +
18977 +/*     __dealloc_nx_addr_v6_all()                              */
18978 +
18979 +static inline void __dealloc_nx_addr_v6_all(struct nx_addr_v6 *nxa)
18980 +{
18981 +       while (nxa) {
18982 +               struct nx_addr_v6 *next = nxa->next;
18983 +
18984 +               __dealloc_nx_addr_v6(nxa);
18985 +               nxa = next;
18986 +       }
18987 +}
18988 +
18989 +#endif /* CONFIG_IPV6 */
18990 +
18991 +/*     __alloc_nx_info()
18992 +
18993 +       * allocate an initialized nx_info struct
18994 +       * doesn't make it visible (hash)                        */
18995 +
18996 +static struct nx_info *__alloc_nx_info(vnid_t nid)
18997 +{
18998 +       struct nx_info *new = NULL;
18999 +
19000 +       vxdprintk(VXD_CBIT(nid, 1), "alloc_nx_info(%d)*", nid);
19001 +
19002 +       /* would this benefit from a slab cache? */
19003 +       new = kmalloc(sizeof(struct nx_info), GFP_KERNEL);
19004 +       if (!new)
19005 +               return 0;
19006 +
19007 +       memset(new, 0, sizeof(struct nx_info));
19008 +       new->nx_id = nid;
19009 +       INIT_HLIST_NODE(&new->nx_hlist);
19010 +       atomic_set(&new->nx_usecnt, 0);
19011 +       atomic_set(&new->nx_tasks, 0);
19012 +       spin_lock_init(&new->addr_lock);
19013 +       new->nx_state = 0;
19014 +
19015 +       new->nx_flags = NXF_INIT_SET;
19016 +
19017 +       /* rest of init goes here */
19018 +
19019 +       new->v4_lback.s_addr = htonl(INADDR_LOOPBACK);
19020 +       new->v4_bcast.s_addr = htonl(INADDR_BROADCAST);
19021 +
19022 +       vxdprintk(VXD_CBIT(nid, 0),
19023 +               "alloc_nx_info(%d) = %p", nid, new);
19024 +       atomic_inc(&nx_global_ctotal);
19025 +       return new;
19026 +}
19027 +
19028 +/*     __dealloc_nx_info()
19029 +
19030 +       * final disposal of nx_info                             */
19031 +
19032 +static void __dealloc_nx_info(struct nx_info *nxi)
19033 +{
19034 +       vxdprintk(VXD_CBIT(nid, 0),
19035 +               "dealloc_nx_info(%p)", nxi);
19036 +
19037 +       nxi->nx_hlist.next = LIST_POISON1;
19038 +       nxi->nx_id = -1;
19039 +
19040 +       BUG_ON(atomic_read(&nxi->nx_usecnt));
19041 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19042 +
19043 +       __dealloc_nx_addr_v4_all(nxi->v4.next);
19044 +#ifdef CONFIG_IPV6
19045 +       __dealloc_nx_addr_v6_all(nxi->v6.next);
19046 +#endif
19047 +
19048 +       nxi->nx_state |= NXS_RELEASED;
19049 +       kfree(nxi);
19050 +       atomic_dec(&nx_global_ctotal);
19051 +}
19052 +
19053 +static void __shutdown_nx_info(struct nx_info *nxi)
19054 +{
19055 +       nxi->nx_state |= NXS_SHUTDOWN;
19056 +       vs_net_change(nxi, VSC_NETDOWN);
19057 +}
19058 +
19059 +/*     exported stuff                                          */
19060 +
19061 +void free_nx_info(struct nx_info *nxi)
19062 +{
19063 +       /* context shutdown is mandatory */
19064 +       BUG_ON(nxi->nx_state != NXS_SHUTDOWN);
19065 +
19066 +       /* context must not be hashed */
19067 +       BUG_ON(nxi->nx_state & NXS_HASHED);
19068 +
19069 +       BUG_ON(atomic_read(&nxi->nx_usecnt));
19070 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19071 +
19072 +       __dealloc_nx_info(nxi);
19073 +}
19074 +
19075 +
19076 +void __nx_set_lback(struct nx_info *nxi)
19077 +{
19078 +       int nid = nxi->nx_id;
19079 +       __be32 lback = htonl(INADDR_LOOPBACK ^ ((nid & 0xFFFF) << 8));
19080 +
19081 +       nxi->v4_lback.s_addr = lback;
19082 +}
19083 +
19084 +extern int __nx_inet_add_lback(__be32 addr);
19085 +extern int __nx_inet_del_lback(__be32 addr);
19086 +
19087 +
19088 +/*     hash table for nx_info hash */
19089 +
19090 +#define NX_HASH_SIZE   13
19091 +
19092 +struct hlist_head nx_info_hash[NX_HASH_SIZE];
19093 +
19094 +static DEFINE_SPINLOCK(nx_info_hash_lock);
19095 +
19096 +
19097 +static inline unsigned int __hashval(vnid_t nid)
19098 +{
19099 +       return (nid % NX_HASH_SIZE);
19100 +}
19101 +
19102 +
19103 +
19104 +/*     __hash_nx_info()
19105 +
19106 +       * add the nxi to the global hash table
19107 +       * requires the hash_lock to be held                     */
19108 +
19109 +static inline void __hash_nx_info(struct nx_info *nxi)
19110 +{
19111 +       struct hlist_head *head;
19112 +
19113 +       vxd_assert_lock(&nx_info_hash_lock);
19114 +       vxdprintk(VXD_CBIT(nid, 4),
19115 +               "__hash_nx_info: %p[#%d]", nxi, nxi->nx_id);
19116 +
19117 +       /* context must not be hashed */
19118 +       BUG_ON(nx_info_state(nxi, NXS_HASHED));
19119 +
19120 +       nxi->nx_state |= NXS_HASHED;
19121 +       head = &nx_info_hash[__hashval(nxi->nx_id)];
19122 +       hlist_add_head(&nxi->nx_hlist, head);
19123 +       atomic_inc(&nx_global_cactive);
19124 +}
19125 +
19126 +/*     __unhash_nx_info()
19127 +
19128 +       * remove the nxi from the global hash table
19129 +       * requires the hash_lock to be held                     */
19130 +
19131 +static inline void __unhash_nx_info(struct nx_info *nxi)
19132 +{
19133 +       vxd_assert_lock(&nx_info_hash_lock);
19134 +       vxdprintk(VXD_CBIT(nid, 4),
19135 +               "__unhash_nx_info: %p[#%d.%d.%d]", nxi, nxi->nx_id,
19136 +               atomic_read(&nxi->nx_usecnt), atomic_read(&nxi->nx_tasks));
19137 +
19138 +       /* context must be hashed */
19139 +       BUG_ON(!nx_info_state(nxi, NXS_HASHED));
19140 +       /* but without tasks */
19141 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19142 +
19143 +       nxi->nx_state &= ~NXS_HASHED;
19144 +       hlist_del(&nxi->nx_hlist);
19145 +       atomic_dec(&nx_global_cactive);
19146 +}
19147 +
19148 +
19149 +/*     __lookup_nx_info()
19150 +
19151 +       * requires the hash_lock to be held
19152 +       * doesn't increment the nx_refcnt                       */
19153 +
19154 +static inline struct nx_info *__lookup_nx_info(vnid_t nid)
19155 +{
19156 +       struct hlist_head *head = &nx_info_hash[__hashval(nid)];
19157 +       struct hlist_node *pos;
19158 +       struct nx_info *nxi;
19159 +
19160 +       vxd_assert_lock(&nx_info_hash_lock);
19161 +       hlist_for_each(pos, head) {
19162 +               nxi = hlist_entry(pos, struct nx_info, nx_hlist);
19163 +
19164 +               if (nxi->nx_id == nid)
19165 +                       goto found;
19166 +       }
19167 +       nxi = NULL;
19168 +found:
19169 +       vxdprintk(VXD_CBIT(nid, 0),
19170 +               "__lookup_nx_info(#%u): %p[#%u]",
19171 +               nid, nxi, nxi ? nxi->nx_id : 0);
19172 +       return nxi;
19173 +}
19174 +
19175 +
19176 +/*     __create_nx_info()
19177 +
19178 +       * create the requested context
19179 +       * get(), claim() and hash it                            */
19180 +
19181 +static struct nx_info *__create_nx_info(int id)
19182 +{
19183 +       struct nx_info *new, *nxi = NULL;
19184 +
19185 +       vxdprintk(VXD_CBIT(nid, 1), "create_nx_info(%d)*", id);
19186 +
19187 +       if (!(new = __alloc_nx_info(id)))
19188 +               return ERR_PTR(-ENOMEM);
19189 +
19190 +       /* required to make dynamic xids unique */
19191 +       spin_lock(&nx_info_hash_lock);
19192 +
19193 +       /* static context requested */
19194 +       if ((nxi = __lookup_nx_info(id))) {
19195 +               vxdprintk(VXD_CBIT(nid, 0),
19196 +                       "create_nx_info(%d) = %p (already there)", id, nxi);
19197 +               if (nx_info_flags(nxi, NXF_STATE_SETUP, 0))
19198 +                       nxi = ERR_PTR(-EBUSY);
19199 +               else
19200 +                       nxi = ERR_PTR(-EEXIST);
19201 +               goto out_unlock;
19202 +       }
19203 +       /* new context */
19204 +       vxdprintk(VXD_CBIT(nid, 0),
19205 +               "create_nx_info(%d) = %p (new)", id, new);
19206 +       claim_nx_info(new, NULL);
19207 +       __nx_set_lback(new);
19208 +       __hash_nx_info(get_nx_info(new));
19209 +       nxi = new, new = NULL;
19210 +
19211 +out_unlock:
19212 +       spin_unlock(&nx_info_hash_lock);
19213 +       if (new)
19214 +               __dealloc_nx_info(new);
19215 +       return nxi;
19216 +}
19217 +
19218 +
19219 +
19220 +/*     exported stuff                                          */
19221 +
19222 +
19223 +void unhash_nx_info(struct nx_info *nxi)
19224 +{
19225 +       __shutdown_nx_info(nxi);
19226 +       spin_lock(&nx_info_hash_lock);
19227 +       __unhash_nx_info(nxi);
19228 +       spin_unlock(&nx_info_hash_lock);
19229 +}
19230 +
19231 +/*     lookup_nx_info()
19232 +
19233 +       * search for a nx_info and get() it
19234 +       * negative id means current                             */
19235 +
19236 +struct nx_info *lookup_nx_info(int id)
19237 +{
19238 +       struct nx_info *nxi = NULL;
19239 +
19240 +       if (id < 0) {
19241 +               nxi = get_nx_info(current_nx_info());
19242 +       } else if (id > 1) {
19243 +               spin_lock(&nx_info_hash_lock);
19244 +               nxi = get_nx_info(__lookup_nx_info(id));
19245 +               spin_unlock(&nx_info_hash_lock);
19246 +       }
19247 +       return nxi;
19248 +}
19249 +
19250 +/*     nid_is_hashed()
19251 +
19252 +       * verify that nid is still hashed                       */
19253 +
19254 +int nid_is_hashed(vnid_t nid)
19255 +{
19256 +       int hashed;
19257 +
19258 +       spin_lock(&nx_info_hash_lock);
19259 +       hashed = (__lookup_nx_info(nid) != NULL);
19260 +       spin_unlock(&nx_info_hash_lock);
19261 +       return hashed;
19262 +}
19263 +
19264 +
19265 +#ifdef CONFIG_PROC_FS
19266 +
19267 +/*     get_nid_list()
19268 +
19269 +       * get a subset of hashed nids for proc
19270 +       * assumes size is at least one                          */
19271 +
19272 +int get_nid_list(int index, unsigned int *nids, int size)
19273 +{
19274 +       int hindex, nr_nids = 0;
19275 +
19276 +       /* only show current and children */
19277 +       if (!nx_check(0, VS_ADMIN | VS_WATCH)) {
19278 +               if (index > 0)
19279 +                       return 0;
19280 +               nids[nr_nids] = nx_current_nid();
19281 +               return 1;
19282 +       }
19283 +
19284 +       for (hindex = 0; hindex < NX_HASH_SIZE; hindex++) {
19285 +               struct hlist_head *head = &nx_info_hash[hindex];
19286 +               struct hlist_node *pos;
19287 +
19288 +               spin_lock(&nx_info_hash_lock);
19289 +               hlist_for_each(pos, head) {
19290 +                       struct nx_info *nxi;
19291 +
19292 +                       if (--index > 0)
19293 +                               continue;
19294 +
19295 +                       nxi = hlist_entry(pos, struct nx_info, nx_hlist);
19296 +                       nids[nr_nids] = nxi->nx_id;
19297 +                       if (++nr_nids >= size) {
19298 +                               spin_unlock(&nx_info_hash_lock);
19299 +                               goto out;
19300 +                       }
19301 +               }
19302 +               /* keep the lock time short */
19303 +               spin_unlock(&nx_info_hash_lock);
19304 +       }
19305 +out:
19306 +       return nr_nids;
19307 +}
19308 +#endif
19309 +
19310 +
19311 +/*
19312 + *     migrate task to new network
19313 + *     gets nxi, puts old_nxi on change
19314 + */
19315 +
19316 +int nx_migrate_task(struct task_struct *p, struct nx_info *nxi)
19317 +{
19318 +       struct nx_info *old_nxi;
19319 +       int ret = 0;
19320 +
19321 +       if (!p || !nxi)
19322 +               BUG();
19323 +
19324 +       vxdprintk(VXD_CBIT(nid, 5),
19325 +               "nx_migrate_task(%p,%p[#%d.%d.%d])",
19326 +               p, nxi, nxi->nx_id,
19327 +               atomic_read(&nxi->nx_usecnt),
19328 +               atomic_read(&nxi->nx_tasks));
19329 +
19330 +       if (nx_info_flags(nxi, NXF_INFO_PRIVATE, 0) &&
19331 +               !nx_info_flags(nxi, NXF_STATE_SETUP, 0))
19332 +               return -EACCES;
19333 +
19334 +       if (nx_info_state(nxi, NXS_SHUTDOWN))
19335 +               return -EFAULT;
19336 +
19337 +       /* maybe disallow this completely? */
19338 +       old_nxi = task_get_nx_info(p);
19339 +       if (old_nxi == nxi)
19340 +               goto out;
19341 +
19342 +       task_lock(p);
19343 +       if (old_nxi)
19344 +               clr_nx_info(&p->nx_info);
19345 +       claim_nx_info(nxi, p);
19346 +       set_nx_info(&p->nx_info, nxi);
19347 +       p->nid = nxi->nx_id;
19348 +       task_unlock(p);
19349 +
19350 +       vxdprintk(VXD_CBIT(nid, 5),
19351 +               "moved task %p into nxi:%p[#%d]",
19352 +               p, nxi, nxi->nx_id);
19353 +
19354 +       if (old_nxi)
19355 +               release_nx_info(old_nxi, p);
19356 +       ret = 0;
19357 +out:
19358 +       put_nx_info(old_nxi);
19359 +       return ret;
19360 +}
19361 +
19362 +
19363 +void nx_set_persistent(struct nx_info *nxi)
19364 +{
19365 +       vxdprintk(VXD_CBIT(nid, 6),
19366 +               "nx_set_persistent(%p[#%d])", nxi, nxi->nx_id);
19367 +
19368 +       get_nx_info(nxi);
19369 +       claim_nx_info(nxi, NULL);
19370 +}
19371 +
19372 +void nx_clear_persistent(struct nx_info *nxi)
19373 +{
19374 +       vxdprintk(VXD_CBIT(nid, 6),
19375 +               "nx_clear_persistent(%p[#%d])", nxi, nxi->nx_id);
19376 +
19377 +       release_nx_info(nxi, NULL);
19378 +       put_nx_info(nxi);
19379 +}
19380 +
19381 +void nx_update_persistent(struct nx_info *nxi)
19382 +{
19383 +       if (nx_info_flags(nxi, NXF_PERSISTENT, 0))
19384 +               nx_set_persistent(nxi);
19385 +       else
19386 +               nx_clear_persistent(nxi);
19387 +}
19388 +
19389 +/* vserver syscall commands below here */
19390 +
19391 +/* taks nid and nx_info functions */
19392 +
19393 +#include <asm/uaccess.h>
19394 +
19395 +
19396 +int vc_task_nid(uint32_t id)
19397 +{
19398 +       vnid_t nid;
19399 +
19400 +       if (id) {
19401 +               struct task_struct *tsk;
19402 +
19403 +               rcu_read_lock();
19404 +               tsk = find_task_by_real_pid(id);
19405 +               nid = (tsk) ? tsk->nid : -ESRCH;
19406 +               rcu_read_unlock();
19407 +       } else
19408 +               nid = nx_current_nid();
19409 +       return nid;
19410 +}
19411 +
19412 +
19413 +int vc_nx_info(struct nx_info *nxi, void __user *data)
19414 +{
19415 +       struct vcmd_nx_info_v0 vc_data;
19416 +
19417 +       vc_data.nid = nxi->nx_id;
19418 +
19419 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
19420 +               return -EFAULT;
19421 +       return 0;
19422 +}
19423 +
19424 +
19425 +/* network functions */
19426 +
19427 +int vc_net_create(uint32_t nid, void __user *data)
19428 +{
19429 +       struct vcmd_net_create vc_data = { .flagword = NXF_INIT_SET };
19430 +       struct nx_info *new_nxi;
19431 +       int ret;
19432 +
19433 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19434 +               return -EFAULT;
19435 +
19436 +       if ((nid > MAX_S_CONTEXT) || (nid < 2))
19437 +               return -EINVAL;
19438 +
19439 +       new_nxi = __create_nx_info(nid);
19440 +       if (IS_ERR(new_nxi))
19441 +               return PTR_ERR(new_nxi);
19442 +
19443 +       /* initial flags */
19444 +       new_nxi->nx_flags = vc_data.flagword;
19445 +
19446 +       ret = -ENOEXEC;
19447 +       if (vs_net_change(new_nxi, VSC_NETUP))
19448 +               goto out;
19449 +
19450 +       ret = nx_migrate_task(current, new_nxi);
19451 +       if (ret)
19452 +               goto out;
19453 +
19454 +       /* return context id on success */
19455 +       ret = new_nxi->nx_id;
19456 +
19457 +       /* get a reference for persistent contexts */
19458 +       if ((vc_data.flagword & NXF_PERSISTENT))
19459 +               nx_set_persistent(new_nxi);
19460 +out:
19461 +       release_nx_info(new_nxi, NULL);
19462 +       put_nx_info(new_nxi);
19463 +       return ret;
19464 +}
19465 +
19466 +
19467 +int vc_net_migrate(struct nx_info *nxi, void __user *data)
19468 +{
19469 +       return nx_migrate_task(current, nxi);
19470 +}
19471 +
19472 +
19473 +static inline
19474 +struct nx_addr_v4 *__find_v4_addr(struct nx_info *nxi,
19475 +       __be32 ip, __be32 ip2, __be32 mask, uint16_t type, uint16_t flags,
19476 +       struct nx_addr_v4 **prev)
19477 +{
19478 +       struct nx_addr_v4 *nxa = &nxi->v4;
19479 +
19480 +       for (; nxa; nxa = nxa->next) {
19481 +               if ((nxa->ip[0].s_addr == ip) &&
19482 +                   (nxa->ip[1].s_addr == ip2) &&
19483 +                   (nxa->mask.s_addr == mask) &&
19484 +                   (nxa->type == type) &&
19485 +                   (nxa->flags == flags))
19486 +                   return nxa;
19487 +
19488 +               /* save previous entry */
19489 +               if (prev)
19490 +                       *prev = nxa;
19491 +       }
19492 +       return NULL;
19493 +}
19494 +
19495 +int do_add_v4_addr(struct nx_info *nxi, __be32 ip, __be32 ip2, __be32 mask,
19496 +       uint16_t type, uint16_t flags)
19497 +{
19498 +       struct nx_addr_v4 *nxa = NULL;
19499 +       struct nx_addr_v4 *new = __alloc_nx_addr_v4();
19500 +       unsigned long irqflags;
19501 +       int ret = -EEXIST;
19502 +
19503 +       if (IS_ERR(new))
19504 +               return PTR_ERR(new);
19505 +
19506 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19507 +       if (__find_v4_addr(nxi, ip, ip2, mask, type, flags, &nxa))
19508 +               goto out_unlock;
19509 +
19510 +       if (NX_IPV4(nxi)) {
19511 +               nxa->next = new;
19512 +               nxa = new;
19513 +               new = NULL;
19514 +
19515 +               /* remove single ip for ip list */
19516 +               nxi->nx_flags &= ~NXF_SINGLE_IP;
19517 +       }
19518 +
19519 +       nxa->ip[0].s_addr = ip;
19520 +       nxa->ip[1].s_addr = ip2;
19521 +       nxa->mask.s_addr = mask;
19522 +       nxa->type = type;
19523 +       nxa->flags = flags;
19524 +       ret = 0;
19525 +out_unlock:
19526 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19527 +       if (new)
19528 +               __dealloc_nx_addr_v4(new);
19529 +       return ret;
19530 +}
19531 +
19532 +int do_remove_v4_addr(struct nx_info *nxi, __be32 ip, __be32 ip2, __be32 mask,
19533 +       uint16_t type, uint16_t flags)
19534 +{
19535 +       struct nx_addr_v4 *nxa = NULL;
19536 +       struct nx_addr_v4 *old = NULL;
19537 +       unsigned long irqflags;
19538 +       int ret = 0;
19539 +
19540 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19541 +       switch (type) {
19542 +       case NXA_TYPE_ADDR:
19543 +               old = __find_v4_addr(nxi, ip, ip2, mask, type, flags, &nxa);
19544 +               if (old) {
19545 +                       if (nxa) {
19546 +                               nxa->next = old->next;
19547 +                               old->next = NULL;
19548 +                       } else {
19549 +                               if (old->next) {
19550 +                                       nxa = old;
19551 +                                       old = old->next;
19552 +                                       *nxa = *old;
19553 +                                       old->next = NULL;
19554 +                               } else {
19555 +                                       memset(old, 0, sizeof(*old));
19556 +                                       old = NULL;
19557 +                               }
19558 +                       }
19559 +               } else
19560 +                       ret = -ESRCH;
19561 +               break;
19562 +
19563 +       case NXA_TYPE_ANY:
19564 +               nxa = &nxi->v4;
19565 +               old = nxa->next;
19566 +               memset(nxa, 0, sizeof(*nxa));
19567 +               break;
19568 +
19569 +       default:
19570 +               ret = -EINVAL;
19571 +       }
19572 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19573 +       __dealloc_nx_addr_v4_all(old);
19574 +       return ret;
19575 +}
19576 +
19577 +
19578 +int vc_net_add(struct nx_info *nxi, void __user *data)
19579 +{
19580 +       struct vcmd_net_addr_v0 vc_data;
19581 +       int index, ret = 0;
19582 +
19583 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19584 +               return -EFAULT;
19585 +
19586 +       switch (vc_data.type) {
19587 +       case NXA_TYPE_IPV4:
19588 +               if ((vc_data.count < 1) || (vc_data.count > 4))
19589 +                       return -EINVAL;
19590 +
19591 +               index = 0;
19592 +               while (index < vc_data.count) {
19593 +                       ret = do_add_v4_addr(nxi, vc_data.ip[index].s_addr, 0,
19594 +                               vc_data.mask[index].s_addr, NXA_TYPE_ADDR, 0);
19595 +                       if (ret)
19596 +                               return ret;
19597 +                       index++;
19598 +               }
19599 +               ret = index;
19600 +               break;
19601 +
19602 +       case NXA_TYPE_IPV4|NXA_MOD_BCAST:
19603 +               nxi->v4_bcast = vc_data.ip[0];
19604 +               ret = 1;
19605 +               break;
19606 +
19607 +       case NXA_TYPE_IPV4|NXA_MOD_LBACK:
19608 +               nxi->v4_lback = vc_data.ip[0];
19609 +               ret = 1;
19610 +               break;
19611 +
19612 +       default:
19613 +               ret = -EINVAL;
19614 +               break;
19615 +       }
19616 +       return ret;
19617 +}
19618 +
19619 +int vc_net_remove(struct nx_info *nxi, void __user *data)
19620 +{
19621 +       struct vcmd_net_addr_v0 vc_data;
19622 +
19623 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19624 +               return -EFAULT;
19625 +
19626 +       switch (vc_data.type) {
19627 +       case NXA_TYPE_ANY:
19628 +               return do_remove_v4_addr(nxi, 0, 0, 0, vc_data.type, 0);
19629 +       default:
19630 +               return -EINVAL;
19631 +       }
19632 +       return 0;
19633 +}
19634 +
19635 +
19636 +int vc_net_add_ipv4_v1(struct nx_info *nxi, void __user *data)
19637 +{
19638 +       struct vcmd_net_addr_ipv4_v1 vc_data;
19639 +
19640 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19641 +               return -EFAULT;
19642 +
19643 +       switch (vc_data.type) {
19644 +       case NXA_TYPE_ADDR:
19645 +       case NXA_TYPE_MASK:
19646 +               return do_add_v4_addr(nxi, vc_data.ip.s_addr, 0,
19647 +                       vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19648 +
19649 +       case NXA_TYPE_ADDR | NXA_MOD_BCAST:
19650 +               nxi->v4_bcast = vc_data.ip;
19651 +               break;
19652 +
19653 +       case NXA_TYPE_ADDR | NXA_MOD_LBACK:
19654 +               nxi->v4_lback = vc_data.ip;
19655 +               break;
19656 +
19657 +       default:
19658 +               return -EINVAL;
19659 +       }
19660 +       return 0;
19661 +}
19662 +
19663 +int vc_net_add_ipv4(struct nx_info *nxi, void __user *data)
19664 +{
19665 +       struct vcmd_net_addr_ipv4_v2 vc_data;
19666 +
19667 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19668 +               return -EFAULT;
19669 +
19670 +       switch (vc_data.type) {
19671 +       case NXA_TYPE_ADDR:
19672 +       case NXA_TYPE_MASK:
19673 +       case NXA_TYPE_RANGE:
19674 +               return do_add_v4_addr(nxi, vc_data.ip.s_addr, vc_data.ip2.s_addr,
19675 +                       vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19676 +
19677 +       case NXA_TYPE_ADDR | NXA_MOD_BCAST:
19678 +               nxi->v4_bcast = vc_data.ip;
19679 +               break;
19680 +
19681 +       case NXA_TYPE_ADDR | NXA_MOD_LBACK:
19682 +               nxi->v4_lback = vc_data.ip;
19683 +               break;
19684 +
19685 +       default:
19686 +               return -EINVAL;
19687 +       }
19688 +       return 0;
19689 +}
19690 +
19691 +int vc_net_rem_ipv4_v1(struct nx_info *nxi, void __user *data)
19692 +{
19693 +       struct vcmd_net_addr_ipv4_v1 vc_data;
19694 +
19695 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19696 +               return -EFAULT;
19697 +
19698 +       return do_remove_v4_addr(nxi, vc_data.ip.s_addr, 0,
19699 +               vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19700 +}
19701 +
19702 +int vc_net_rem_ipv4(struct nx_info *nxi, void __user *data)
19703 +{
19704 +       struct vcmd_net_addr_ipv4_v2 vc_data;
19705 +
19706 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19707 +               return -EFAULT;
19708 +
19709 +       return do_remove_v4_addr(nxi, vc_data.ip.s_addr, vc_data.ip2.s_addr,
19710 +               vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19711 +}
19712 +
19713 +#ifdef CONFIG_IPV6
19714 +
19715 +static inline
19716 +struct nx_addr_v6 *__find_v6_addr(struct nx_info *nxi,
19717 +       struct in6_addr *ip, struct in6_addr *mask,
19718 +       uint32_t prefix, uint16_t type, uint16_t flags,
19719 +       struct nx_addr_v6 **prev)
19720 +{
19721 +       struct nx_addr_v6 *nxa = &nxi->v6;
19722 +
19723 +       for (; nxa; nxa = nxa->next) {
19724 +               if (ipv6_addr_equal(&nxa->ip, ip) &&
19725 +                   ipv6_addr_equal(&nxa->mask, mask) &&
19726 +                   (nxa->prefix == prefix) &&
19727 +                   (nxa->type == type) &&
19728 +                   (nxa->flags == flags))
19729 +                   return nxa;
19730 +
19731 +               /* save previous entry */
19732 +               if (prev)
19733 +                       *prev = nxa;
19734 +       }
19735 +       return NULL;
19736 +}
19737 +
19738 +
19739 +int do_add_v6_addr(struct nx_info *nxi,
19740 +       struct in6_addr *ip, struct in6_addr *mask,
19741 +       uint32_t prefix, uint16_t type, uint16_t flags)
19742 +{
19743 +       struct nx_addr_v6 *nxa = NULL;
19744 +       struct nx_addr_v6 *new = __alloc_nx_addr_v6();
19745 +       unsigned long irqflags;
19746 +       int ret = -EEXIST;
19747 +
19748 +       if (IS_ERR(new))
19749 +               return PTR_ERR(new);
19750 +
19751 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19752 +       if (__find_v6_addr(nxi, ip, mask, prefix, type, flags, &nxa))
19753 +               goto out_unlock;
19754 +
19755 +       if (NX_IPV6(nxi)) {
19756 +               nxa->next = new;
19757 +               nxa = new;
19758 +               new = NULL;
19759 +       }
19760 +
19761 +       nxa->ip = *ip;
19762 +       nxa->mask = *mask;
19763 +       nxa->prefix = prefix;
19764 +       nxa->type = type;
19765 +       nxa->flags = flags;
19766 +       ret = 0;
19767 +out_unlock:
19768 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19769 +       if (new)
19770 +               __dealloc_nx_addr_v6(new);
19771 +       return ret;
19772 +}
19773 +
19774 +int do_remove_v6_addr(struct nx_info *nxi,
19775 +       struct in6_addr *ip, struct in6_addr *mask,
19776 +       uint32_t prefix, uint16_t type, uint16_t flags)
19777 +{
19778 +       struct nx_addr_v6 *nxa = NULL;
19779 +       struct nx_addr_v6 *old = NULL;
19780 +       unsigned long irqflags;
19781 +       int ret = 0;
19782 +
19783 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19784 +       switch (type) {
19785 +       case NXA_TYPE_ADDR:
19786 +               old = __find_v6_addr(nxi, ip, mask, prefix, type, flags, &nxa);
19787 +               if (old) {
19788 +                       if (nxa) {
19789 +                               nxa->next = old->next;
19790 +                               old->next = NULL;
19791 +                       } else {
19792 +                               if (old->next) {
19793 +                                       nxa = old;
19794 +                                       old = old->next;
19795 +                                       *nxa = *old;
19796 +                                       old->next = NULL;
19797 +                               } else {
19798 +                                       memset(old, 0, sizeof(*old));
19799 +                                       old = NULL;
19800 +                               }
19801 +                       }
19802 +               } else
19803 +                       ret = -ESRCH;
19804 +               break;
19805 +
19806 +       case NXA_TYPE_ANY:
19807 +               nxa = &nxi->v6;
19808 +               old = nxa->next;
19809 +               memset(nxa, 0, sizeof(*nxa));
19810 +               break;
19811 +
19812 +       default:
19813 +               ret = -EINVAL;
19814 +       }
19815 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19816 +       __dealloc_nx_addr_v6_all(old);
19817 +       return ret;
19818 +}
19819 +
19820 +int vc_net_add_ipv6(struct nx_info *nxi, void __user *data)
19821 +{
19822 +       struct vcmd_net_addr_ipv6_v1 vc_data;
19823 +
19824 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19825 +               return -EFAULT;
19826 +
19827 +       switch (vc_data.type) {
19828 +       case NXA_TYPE_ADDR:
19829 +               memset(&vc_data.mask, ~0, sizeof(vc_data.mask));
19830 +               /* fallthrough */
19831 +       case NXA_TYPE_MASK:
19832 +               return do_add_v6_addr(nxi, &vc_data.ip, &vc_data.mask,
19833 +                       vc_data.prefix, vc_data.type, vc_data.flags);
19834 +       default:
19835 +               return -EINVAL;
19836 +       }
19837 +       return 0;
19838 +}
19839 +
19840 +int vc_net_remove_ipv6(struct nx_info *nxi, void __user *data)
19841 +{
19842 +       struct vcmd_net_addr_ipv6_v1 vc_data;
19843 +
19844 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19845 +               return -EFAULT;
19846 +
19847 +       switch (vc_data.type) {
19848 +       case NXA_TYPE_ADDR:
19849 +               memset(&vc_data.mask, ~0, sizeof(vc_data.mask));
19850 +               /* fallthrough */
19851 +       case NXA_TYPE_MASK:
19852 +               return do_remove_v6_addr(nxi, &vc_data.ip, &vc_data.mask,
19853 +                       vc_data.prefix, vc_data.type, vc_data.flags);
19854 +       case NXA_TYPE_ANY:
19855 +               return do_remove_v6_addr(nxi, NULL, NULL, 0, vc_data.type, 0);
19856 +       default:
19857 +               return -EINVAL;
19858 +       }
19859 +       return 0;
19860 +}
19861 +
19862 +#endif /* CONFIG_IPV6 */
19863 +
19864 +
19865 +int vc_get_nflags(struct nx_info *nxi, void __user *data)
19866 +{
19867 +       struct vcmd_net_flags_v0 vc_data;
19868 +
19869 +       vc_data.flagword = nxi->nx_flags;
19870 +
19871 +       /* special STATE flag handling */
19872 +       vc_data.mask = vs_mask_flags(~0ULL, nxi->nx_flags, NXF_ONE_TIME);
19873 +
19874 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
19875 +               return -EFAULT;
19876 +       return 0;
19877 +}
19878 +
19879 +int vc_set_nflags(struct nx_info *nxi, void __user *data)
19880 +{
19881 +       struct vcmd_net_flags_v0 vc_data;
19882 +       uint64_t mask, trigger;
19883 +
19884 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
19885 +               return -EFAULT;
19886 +
19887 +       /* special STATE flag handling */
19888 +       mask = vs_mask_mask(vc_data.mask, nxi->nx_flags, NXF_ONE_TIME);
19889 +       trigger = (mask & nxi->nx_flags) ^ (mask & vc_data.flagword);
19890 +
19891 +       nxi->nx_flags = vs_mask_flags(nxi->nx_flags,
19892 +               vc_data.flagword, mask);
19893 +       if (trigger & NXF_PERSISTENT)
19894 +               nx_update_persistent(nxi);
19895 +
19896 +       return 0;
19897 +}
19898 +
19899 +int vc_get_ncaps(struct nx_info *nxi, void __user *data)
19900 +{
19901 +       struct vcmd_net_caps_v0 vc_data;
19902 +
19903 +       vc_data.ncaps = nxi->nx_ncaps;
19904 +       vc_data.cmask = ~0ULL;
19905 +
19906 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
19907 +               return -EFAULT;
19908 +       return 0;
19909 +}
19910 +
19911 +int vc_set_ncaps(struct nx_info *nxi, void __user *data)
19912 +{
19913 +       struct vcmd_net_caps_v0 vc_data;
19914 +
19915 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
19916 +               return -EFAULT;
19917 +
19918 +       nxi->nx_ncaps = vs_mask_flags(nxi->nx_ncaps,
19919 +               vc_data.ncaps, vc_data.cmask);
19920 +       return 0;
19921 +}
19922 +
19923 +
19924 +#include <linux/module.h>
19925 +
19926 +module_init(init_network);
19927 +
19928 +EXPORT_SYMBOL_GPL(free_nx_info);
19929 +EXPORT_SYMBOL_GPL(unhash_nx_info);
19930 +
19931 diff -NurpP --minimal linux-4.4.111/kernel/vserver/proc.c linux-4.4.111-vs2.3.9.5/kernel/vserver/proc.c
19932 --- linux-4.4.111/kernel/vserver/proc.c 1970-01-01 00:00:00.000000000 +0000
19933 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/proc.c       2018-01-11 12:02:42.000000000 +0000
19934 @@ -0,0 +1,1040 @@
19935 +/*
19936 + *  linux/kernel/vserver/proc.c
19937 + *
19938 + *  Virtual Context Support
19939 + *
19940 + *  Copyright (C) 2003-2011  Herbert P?tzl
19941 + *
19942 + *  V0.01  basic structure
19943 + *  V0.02  adaptation vs1.3.0
19944 + *  V0.03  proc permissions
19945 + *  V0.04  locking/generic
19946 + *  V0.05  next generation procfs
19947 + *  V0.06  inode validation
19948 + *  V0.07  generic rewrite vid
19949 + *  V0.08  remove inode type
19950 + *  V0.09  added u/wmask info
19951 + *
19952 + */
19953 +
19954 +#include <linux/proc_fs.h>
19955 +#include <linux/fs_struct.h>
19956 +#include <linux/mount.h>
19957 +#include <linux/namei.h>
19958 +#include <asm/unistd.h>
19959 +
19960 +#include <linux/vs_context.h>
19961 +#include <linux/vs_network.h>
19962 +#include <linux/vs_cvirt.h>
19963 +
19964 +#include <linux/in.h>
19965 +#include <linux/inetdevice.h>
19966 +#include <linux/vs_inet.h>
19967 +#include <linux/vs_inet6.h>
19968 +
19969 +#include <linux/vserver/global.h>
19970 +
19971 +#include "cvirt_proc.h"
19972 +#include "cacct_proc.h"
19973 +#include "limit_proc.h"
19974 +#include "sched_proc.h"
19975 +#include "vci_config.h"
19976 +
19977 +#include <../../fs/proc/internal.h>
19978 +
19979 +
19980 +static inline char *print_cap_t(char *buffer, kernel_cap_t *c)
19981 +{
19982 +       unsigned __capi;
19983 +
19984 +       CAP_FOR_EACH_U32(__capi) {
19985 +               buffer += sprintf(buffer, "%08x",
19986 +                       c->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
19987 +       }
19988 +       return buffer;
19989 +}
19990 +
19991 +
19992 +static struct proc_dir_entry *proc_virtual;
19993 +
19994 +static struct proc_dir_entry *proc_virtnet;
19995 +
19996 +
19997 +/* first the actual feeds */
19998 +
19999 +
20000 +static int proc_vci(char *buffer)
20001 +{
20002 +       return sprintf(buffer,
20003 +               "VCIVersion:\t%04x:%04x\n"
20004 +               "VCISyscall:\t%d\n"
20005 +               "VCIKernel:\t%08x\n",
20006 +               VCI_VERSION >> 16,
20007 +               VCI_VERSION & 0xFFFF,
20008 +               __NR_vserver,
20009 +               vci_kernel_config());
20010 +}
20011 +
20012 +static int proc_virtual_info(char *buffer)
20013 +{
20014 +       return proc_vci(buffer);
20015 +}
20016 +
20017 +static int proc_virtual_status(char *buffer)
20018 +{
20019 +       return sprintf(buffer,
20020 +               "#CTotal:\t%d\n"
20021 +               "#CActive:\t%d\n"
20022 +               "#NSProxy:\t%d\t%d %d %d %d %d %d\n"
20023 +               "#InitTask:\t%d\t%d %d\n",
20024 +               atomic_read(&vx_global_ctotal),
20025 +               atomic_read(&vx_global_cactive),
20026 +               atomic_read(&vs_global_nsproxy),
20027 +               atomic_read(&vs_global_fs),
20028 +               atomic_read(&vs_global_mnt_ns),
20029 +               atomic_read(&vs_global_uts_ns),
20030 +               atomic_read(&nr_ipc_ns),
20031 +               atomic_read(&vs_global_user_ns),
20032 +               atomic_read(&vs_global_pid_ns),
20033 +               atomic_read(&init_task.usage),
20034 +               atomic_read(&init_task.nsproxy->count),
20035 +               init_task.fs->users);
20036 +}
20037 +
20038 +
20039 +int proc_vxi_info(struct vx_info *vxi, char *buffer)
20040 +{
20041 +       int length;
20042 +
20043 +       length = sprintf(buffer,
20044 +               "ID:\t%d\n"
20045 +               "Info:\t%p\n"
20046 +               "Init:\t%d\n"
20047 +               "OOM:\t%lld\n",
20048 +               vxi->vx_id,
20049 +               vxi,
20050 +               vxi->vx_initpid,
20051 +               vxi->vx_badness_bias);
20052 +       return length;
20053 +}
20054 +
20055 +int proc_vxi_status(struct vx_info *vxi, char *buffer)
20056 +{
20057 +       char *orig = buffer;
20058 +
20059 +       buffer += sprintf(buffer,
20060 +               "UseCnt:\t%d\n"
20061 +               "Tasks:\t%d\n"
20062 +               "Flags:\t%016llx\n",
20063 +               atomic_read(&vxi->vx_usecnt),
20064 +               atomic_read(&vxi->vx_tasks),
20065 +               (unsigned long long)vxi->vx_flags);
20066 +
20067 +       buffer += sprintf(buffer, "BCaps:\t");
20068 +       buffer = print_cap_t(buffer, &vxi->vx_bcaps);
20069 +       buffer += sprintf(buffer, "\n");
20070 +
20071 +       buffer += sprintf(buffer,
20072 +               "CCaps:\t%016llx\n"
20073 +               "Umask:\t%16llx\n"
20074 +               "Wmask:\t%16llx\n"
20075 +               "Spaces:\t%08lx %08lx\n",
20076 +               (unsigned long long)vxi->vx_ccaps,
20077 +               (unsigned long long)vxi->vx_umask,
20078 +               (unsigned long long)vxi->vx_wmask,
20079 +               vxi->space[0].vx_nsmask, vxi->space[1].vx_nsmask);
20080 +       return buffer - orig;
20081 +}
20082 +
20083 +int proc_vxi_limit(struct vx_info *vxi, char *buffer)
20084 +{
20085 +       return vx_info_proc_limit(&vxi->limit, buffer);
20086 +}
20087 +
20088 +int proc_vxi_sched(struct vx_info *vxi, char *buffer)
20089 +{
20090 +       int cpu, length;
20091 +
20092 +       length = vx_info_proc_sched(&vxi->sched, buffer);
20093 +       for_each_online_cpu(cpu) {
20094 +               length += vx_info_proc_sched_pc(
20095 +                       &vx_per_cpu(vxi, sched_pc, cpu),
20096 +                       buffer + length, cpu);
20097 +       }
20098 +       return length;
20099 +}
20100 +
20101 +int proc_vxi_nsproxy0(struct vx_info *vxi, char *buffer)
20102 +{
20103 +       return vx_info_proc_nsproxy(vxi->space[0].vx_nsproxy, buffer);
20104 +}
20105 +
20106 +int proc_vxi_nsproxy1(struct vx_info *vxi, char *buffer)
20107 +{
20108 +       return vx_info_proc_nsproxy(vxi->space[1].vx_nsproxy, buffer);
20109 +}
20110 +
20111 +int proc_vxi_cvirt(struct vx_info *vxi, char *buffer)
20112 +{
20113 +       int cpu, length;
20114 +
20115 +       vx_update_load(vxi);
20116 +       length = vx_info_proc_cvirt(&vxi->cvirt, buffer);
20117 +       for_each_online_cpu(cpu) {
20118 +               length += vx_info_proc_cvirt_pc(
20119 +                       &vx_per_cpu(vxi, cvirt_pc, cpu),
20120 +                       buffer + length, cpu);
20121 +       }
20122 +       return length;
20123 +}
20124 +
20125 +int proc_vxi_cacct(struct vx_info *vxi, char *buffer)
20126 +{
20127 +       return vx_info_proc_cacct(&vxi->cacct, buffer);
20128 +}
20129 +
20130 +
20131 +static int proc_virtnet_info(char *buffer)
20132 +{
20133 +       return proc_vci(buffer);
20134 +}
20135 +
20136 +static int proc_virtnet_status(char *buffer)
20137 +{
20138 +       return sprintf(buffer,
20139 +               "#CTotal:\t%d\n"
20140 +               "#CActive:\t%d\n",
20141 +               atomic_read(&nx_global_ctotal),
20142 +               atomic_read(&nx_global_cactive));
20143 +}
20144 +
20145 +int proc_nxi_info(struct nx_info *nxi, char *buffer)
20146 +{
20147 +       struct nx_addr_v4 *v4a;
20148 +#ifdef CONFIG_IPV6
20149 +       struct nx_addr_v6 *v6a;
20150 +#endif
20151 +       int length, i;
20152 +
20153 +       length = sprintf(buffer,
20154 +               "ID:\t%d\n"
20155 +               "Info:\t%p\n"
20156 +               "Bcast:\t" NIPQUAD_FMT "\n"
20157 +               "Lback:\t" NIPQUAD_FMT "\n",
20158 +               nxi->nx_id,
20159 +               nxi,
20160 +               NIPQUAD(nxi->v4_bcast.s_addr),
20161 +               NIPQUAD(nxi->v4_lback.s_addr));
20162 +
20163 +       if (!NX_IPV4(nxi))
20164 +               goto skip_v4;
20165 +       for (i = 0, v4a = &nxi->v4; v4a; i++, v4a = v4a->next)
20166 +               length += sprintf(buffer + length, "%d:\t" NXAV4_FMT "\n",
20167 +                       i, NXAV4(v4a));
20168 +skip_v4:
20169 +#ifdef CONFIG_IPV6
20170 +       if (!NX_IPV6(nxi))
20171 +               goto skip_v6;
20172 +       for (i = 0, v6a = &nxi->v6; v6a; i++, v6a = v6a->next)
20173 +               length += sprintf(buffer + length, "%d:\t" NXAV6_FMT "\n",
20174 +                       i, NXAV6(v6a));
20175 +skip_v6:
20176 +#endif
20177 +       return length;
20178 +}
20179 +
20180 +int proc_nxi_status(struct nx_info *nxi, char *buffer)
20181 +{
20182 +       int length;
20183 +
20184 +       length = sprintf(buffer,
20185 +               "UseCnt:\t%d\n"
20186 +               "Tasks:\t%d\n"
20187 +               "Flags:\t%016llx\n"
20188 +               "NCaps:\t%016llx\n",
20189 +               atomic_read(&nxi->nx_usecnt),
20190 +               atomic_read(&nxi->nx_tasks),
20191 +               (unsigned long long)nxi->nx_flags,
20192 +               (unsigned long long)nxi->nx_ncaps);
20193 +       return length;
20194 +}
20195 +
20196 +
20197 +
20198 +/* here the inode helpers */
20199 +
20200 +struct vs_entry {
20201 +       int len;
20202 +       char *name;
20203 +       mode_t mode;
20204 +       struct inode_operations *iop;
20205 +       struct file_operations *fop;
20206 +       union proc_op op;
20207 +};
20208 +
20209 +static struct inode *vs_proc_make_inode(struct super_block *sb, struct vs_entry *p)
20210 +{
20211 +       struct inode *inode = new_inode(sb);
20212 +
20213 +       if (!inode)
20214 +               goto out;
20215 +
20216 +       inode->i_mode = p->mode;
20217 +       if (p->iop)
20218 +               inode->i_op = p->iop;
20219 +       if (p->fop)
20220 +               inode->i_fop = p->fop;
20221 +
20222 +       set_nlink(inode, (p->mode & S_IFDIR) ? 2 : 1);
20223 +       inode->i_flags |= S_IMMUTABLE;
20224 +
20225 +       inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
20226 +
20227 +       i_uid_write(inode, 0);
20228 +       i_gid_write(inode, 0);
20229 +       i_tag_write(inode, 0);
20230 +out:
20231 +       return inode;
20232 +}
20233 +
20234 +static struct dentry *vs_proc_instantiate(struct inode *dir,
20235 +       struct dentry *dentry, int id, void *ptr)
20236 +{
20237 +       struct vs_entry *p = ptr;
20238 +       struct inode *inode = vs_proc_make_inode(dir->i_sb, p);
20239 +       struct dentry *error = ERR_PTR(-EINVAL);
20240 +
20241 +       if (!inode)
20242 +               goto out;
20243 +
20244 +       PROC_I(inode)->op = p->op;
20245 +       PROC_I(inode)->fd = id;
20246 +       d_add(dentry, inode);
20247 +       error = NULL;
20248 +out:
20249 +       return error;
20250 +}
20251 +
20252 +/* Lookups */
20253 +
20254 +typedef struct dentry *vx_instantiate_t(struct inode *, struct dentry *, int, void *);
20255 +
20256 +
20257 +/*
20258 + * Fill a directory entry.
20259 + *
20260 + * If possible create the dcache entry and derive our inode number and
20261 + * file type from dcache entry.
20262 + *
20263 + * Since all of the proc inode numbers are dynamically generated, the inode
20264 + * numbers do not exist until the inode is cache.  This means creating the
20265 + * the dcache entry in iterate is necessary to keep the inode numbers
20266 + * reported by iterate in sync with the inode numbers reported
20267 + * by stat.
20268 + */
20269 +static int vx_proc_fill_cache(struct file *filp, struct dir_context *ctx,
20270 +       char *name, int len, vx_instantiate_t instantiate, int id, void *ptr)
20271 +{
20272 +       struct dentry *child, *dir = filp->f_path.dentry;
20273 +       struct inode *inode;
20274 +       struct qstr qname;
20275 +       ino_t ino = 0;
20276 +       unsigned type = DT_UNKNOWN;
20277 +
20278 +       qname.name = name;
20279 +       qname.len  = len;
20280 +       qname.hash = full_name_hash(name, len);
20281 +
20282 +       child = d_lookup(dir, &qname);
20283 +       if (!child) {
20284 +               struct dentry *new;
20285 +               new = d_alloc(dir, &qname);
20286 +               if (new) {
20287 +                       child = instantiate(dir->d_inode, new, id, ptr);
20288 +                       if (child)
20289 +                               dput(new);
20290 +                       else
20291 +                               child = new;
20292 +               }
20293 +       }
20294 +       if (!child || IS_ERR(child) || !child->d_inode)
20295 +               goto end_instantiate;
20296 +       inode = child->d_inode;
20297 +       if (inode) {
20298 +               ino = inode->i_ino;
20299 +               type = inode->i_mode >> 12;
20300 +       }
20301 +       dput(child);
20302 +end_instantiate:
20303 +       if (!ino)
20304 +               ino = 1;
20305 +       return !dir_emit(ctx, name, len, ino, type);
20306 +}
20307 +
20308 +
20309 +
20310 +/* get and revalidate vx_info/xid */
20311 +
20312 +static inline
20313 +struct vx_info *get_proc_vx_info(struct inode *inode)
20314 +{
20315 +       return lookup_vx_info(PROC_I(inode)->fd);
20316 +}
20317 +
20318 +static int proc_xid_revalidate(struct dentry *dentry, unsigned int flags)
20319 +{
20320 +       struct inode *inode = dentry->d_inode;
20321 +       vxid_t xid = PROC_I(inode)->fd;
20322 +
20323 +       if (flags & LOOKUP_RCU) /* FIXME: can be dropped? */
20324 +               return -ECHILD;
20325 +
20326 +       if (!xid || xid_is_hashed(xid))
20327 +               return 1;
20328 +       d_drop(dentry);
20329 +       return 0;
20330 +}
20331 +
20332 +
20333 +/* get and revalidate nx_info/nid */
20334 +
20335 +static int proc_nid_revalidate(struct dentry *dentry, unsigned int flags)
20336 +{
20337 +       struct inode *inode = dentry->d_inode;
20338 +       vnid_t nid = PROC_I(inode)->fd;
20339 +
20340 +       if (flags & LOOKUP_RCU) /* FIXME: can be dropped? */
20341 +               return -ECHILD;
20342 +
20343 +       if (!nid || nid_is_hashed(nid))
20344 +               return 1;
20345 +       d_drop(dentry);
20346 +       return 0;
20347 +}
20348 +
20349 +
20350 +
20351 +#define PROC_BLOCK_SIZE (PAGE_SIZE - 1024)
20352 +
20353 +static ssize_t proc_vs_info_read(struct file *file, char __user *buf,
20354 +                         size_t count, loff_t *ppos)
20355 +{
20356 +       struct inode *inode = file->f_path.dentry->d_inode;
20357 +       unsigned long page;
20358 +       ssize_t length = 0;
20359 +
20360 +       if (count > PROC_BLOCK_SIZE)
20361 +               count = PROC_BLOCK_SIZE;
20362 +
20363 +       /* fade that out as soon as stable */
20364 +       WARN_ON(PROC_I(inode)->fd);
20365 +
20366 +       if (!(page = __get_free_page(GFP_KERNEL)))
20367 +               return -ENOMEM;
20368 +
20369 +       BUG_ON(!PROC_I(inode)->op.proc_vs_read);
20370 +       length = PROC_I(inode)->op.proc_vs_read((char *)page);
20371 +
20372 +       if (length >= 0)
20373 +               length = simple_read_from_buffer(buf, count, ppos,
20374 +                       (char *)page, length);
20375 +
20376 +       free_page(page);
20377 +       return length;
20378 +}
20379 +
20380 +static ssize_t proc_vx_info_read(struct file *file, char __user *buf,
20381 +                         size_t count, loff_t *ppos)
20382 +{
20383 +       struct inode *inode = file->f_path.dentry->d_inode;
20384 +       struct vx_info *vxi = NULL;
20385 +       vxid_t xid = PROC_I(inode)->fd;
20386 +       unsigned long page;
20387 +       ssize_t length = 0;
20388 +
20389 +       if (count > PROC_BLOCK_SIZE)
20390 +               count = PROC_BLOCK_SIZE;
20391 +
20392 +       /* fade that out as soon as stable */
20393 +       WARN_ON(!xid);
20394 +       vxi = lookup_vx_info(xid);
20395 +       if (!vxi)
20396 +               goto out;
20397 +
20398 +       length = -ENOMEM;
20399 +       if (!(page = __get_free_page(GFP_KERNEL)))
20400 +               goto out_put;
20401 +
20402 +       BUG_ON(!PROC_I(inode)->op.proc_vxi_read);
20403 +       length = PROC_I(inode)->op.proc_vxi_read(vxi, (char *)page);
20404 +
20405 +       if (length >= 0)
20406 +               length = simple_read_from_buffer(buf, count, ppos,
20407 +                       (char *)page, length);
20408 +
20409 +       free_page(page);
20410 +out_put:
20411 +       put_vx_info(vxi);
20412 +out:
20413 +       return length;
20414 +}
20415 +
20416 +static ssize_t proc_nx_info_read(struct file *file, char __user *buf,
20417 +                         size_t count, loff_t *ppos)
20418 +{
20419 +       struct inode *inode = file->f_path.dentry->d_inode;
20420 +       struct nx_info *nxi = NULL;
20421 +       vnid_t nid = PROC_I(inode)->fd;
20422 +       unsigned long page;
20423 +       ssize_t length = 0;
20424 +
20425 +       if (count > PROC_BLOCK_SIZE)
20426 +               count = PROC_BLOCK_SIZE;
20427 +
20428 +       /* fade that out as soon as stable */
20429 +       WARN_ON(!nid);
20430 +       nxi = lookup_nx_info(nid);
20431 +       if (!nxi)
20432 +               goto out;
20433 +
20434 +       length = -ENOMEM;
20435 +       if (!(page = __get_free_page(GFP_KERNEL)))
20436 +               goto out_put;
20437 +
20438 +       BUG_ON(!PROC_I(inode)->op.proc_nxi_read);
20439 +       length = PROC_I(inode)->op.proc_nxi_read(nxi, (char *)page);
20440 +
20441 +       if (length >= 0)
20442 +               length = simple_read_from_buffer(buf, count, ppos,
20443 +                       (char *)page, length);
20444 +
20445 +       free_page(page);
20446 +out_put:
20447 +       put_nx_info(nxi);
20448 +out:
20449 +       return length;
20450 +}
20451 +
20452 +
20453 +
20454 +/* here comes the lower level */
20455 +
20456 +
20457 +#define NOD(NAME, MODE, IOP, FOP, OP) {        \
20458 +       .len  = sizeof(NAME) - 1,       \
20459 +       .name = (NAME),                 \
20460 +       .mode = MODE,                   \
20461 +       .iop  = IOP,                    \
20462 +       .fop  = FOP,                    \
20463 +       .op   = OP,                     \
20464 +}
20465 +
20466 +
20467 +#define DIR(NAME, MODE, OTYPE)                         \
20468 +       NOD(NAME, (S_IFDIR | (MODE)),                   \
20469 +               &proc_ ## OTYPE ## _inode_operations,   \
20470 +               &proc_ ## OTYPE ## _file_operations, { } )
20471 +
20472 +#define INF(NAME, MODE, OTYPE)                         \
20473 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20474 +               &proc_vs_info_file_operations,          \
20475 +               { .proc_vs_read = &proc_##OTYPE } )
20476 +
20477 +#define VINF(NAME, MODE, OTYPE)                                \
20478 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20479 +               &proc_vx_info_file_operations,          \
20480 +               { .proc_vxi_read = &proc_##OTYPE } )
20481 +
20482 +#define NINF(NAME, MODE, OTYPE)                                \
20483 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20484 +               &proc_nx_info_file_operations,          \
20485 +               { .proc_nxi_read = &proc_##OTYPE } )
20486 +
20487 +
20488 +static struct file_operations proc_vs_info_file_operations = {
20489 +       .read =         proc_vs_info_read,
20490 +};
20491 +
20492 +static struct file_operations proc_vx_info_file_operations = {
20493 +       .read =         proc_vx_info_read,
20494 +};
20495 +
20496 +static struct dentry_operations proc_xid_dentry_operations = {
20497 +       .d_revalidate = proc_xid_revalidate,
20498 +};
20499 +
20500 +static struct vs_entry vx_base_stuff[] = {
20501 +       VINF("info",    S_IRUGO, vxi_info),
20502 +       VINF("status",  S_IRUGO, vxi_status),
20503 +       VINF("limit",   S_IRUGO, vxi_limit),
20504 +       VINF("sched",   S_IRUGO, vxi_sched),
20505 +       VINF("nsproxy", S_IRUGO, vxi_nsproxy0),
20506 +       VINF("nsproxy1",S_IRUGO, vxi_nsproxy1),
20507 +       VINF("cvirt",   S_IRUGO, vxi_cvirt),
20508 +       VINF("cacct",   S_IRUGO, vxi_cacct),
20509 +       {}
20510 +};
20511 +
20512 +
20513 +
20514 +
20515 +static struct dentry *proc_xid_instantiate(struct inode *dir,
20516 +       struct dentry *dentry, int id, void *ptr)
20517 +{
20518 +       dentry->d_op = &proc_xid_dentry_operations;
20519 +       return vs_proc_instantiate(dir, dentry, id, ptr);
20520 +}
20521 +
20522 +static struct dentry *proc_xid_lookup(struct inode *dir,
20523 +       struct dentry *dentry, unsigned int flags)
20524 +{
20525 +       struct vs_entry *p = vx_base_stuff;
20526 +       struct dentry *error = ERR_PTR(-ENOENT);
20527 +
20528 +       for (; p->name; p++) {
20529 +               if (p->len != dentry->d_name.len)
20530 +                       continue;
20531 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20532 +                       break;
20533 +       }
20534 +       if (!p->name)
20535 +               goto out;
20536 +
20537 +       error = proc_xid_instantiate(dir, dentry, PROC_I(dir)->fd, p);
20538 +out:
20539 +       return error;
20540 +}
20541 +
20542 +static int proc_xid_iterate(struct file *filp, struct dir_context *ctx)
20543 +{
20544 +       struct dentry *dentry = filp->f_path.dentry;
20545 +       struct inode *inode = dentry->d_inode;
20546 +       struct vs_entry *p = vx_base_stuff;
20547 +       int size = sizeof(vx_base_stuff) / sizeof(struct vs_entry);
20548 +       int index;
20549 +
20550 +       if (!dir_emit_dots(filp, ctx))
20551 +               return 0;
20552 +
20553 +       index = ctx->pos - 2;
20554 +       if (index < size) {
20555 +               for (p += index; p->name; p++) {
20556 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20557 +                               vs_proc_instantiate, PROC_I(inode)->fd, p))
20558 +                               return 0;
20559 +                       ctx->pos++;
20560 +               }
20561 +       }
20562 +       return 1;
20563 +}
20564 +
20565 +
20566 +
20567 +static struct file_operations proc_nx_info_file_operations = {
20568 +       .read =         proc_nx_info_read,
20569 +};
20570 +
20571 +static struct dentry_operations proc_nid_dentry_operations = {
20572 +       .d_revalidate = proc_nid_revalidate,
20573 +};
20574 +
20575 +static struct vs_entry nx_base_stuff[] = {
20576 +       NINF("info",    S_IRUGO, nxi_info),
20577 +       NINF("status",  S_IRUGO, nxi_status),
20578 +       {}
20579 +};
20580 +
20581 +
20582 +static struct dentry *proc_nid_instantiate(struct inode *dir,
20583 +       struct dentry *dentry, int id, void *ptr)
20584 +{
20585 +       dentry->d_op = &proc_nid_dentry_operations;
20586 +       return vs_proc_instantiate(dir, dentry, id, ptr);
20587 +}
20588 +
20589 +static struct dentry *proc_nid_lookup(struct inode *dir,
20590 +       struct dentry *dentry, unsigned int flags)
20591 +{
20592 +       struct vs_entry *p = nx_base_stuff;
20593 +       struct dentry *error = ERR_PTR(-ENOENT);
20594 +
20595 +       for (; p->name; p++) {
20596 +               if (p->len != dentry->d_name.len)
20597 +                       continue;
20598 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20599 +                       break;
20600 +       }
20601 +       if (!p->name)
20602 +               goto out;
20603 +
20604 +       error = proc_nid_instantiate(dir, dentry, PROC_I(dir)->fd, p);
20605 +out:
20606 +       return error;
20607 +}
20608 +
20609 +static int proc_nid_iterate(struct file *filp, struct dir_context *ctx)
20610 +{
20611 +       struct dentry *dentry = filp->f_path.dentry;
20612 +       struct inode *inode = dentry->d_inode;
20613 +       struct vs_entry *p = nx_base_stuff;
20614 +       int size = sizeof(nx_base_stuff) / sizeof(struct vs_entry);
20615 +       int index;
20616 +
20617 +       if (!dir_emit_dots(filp, ctx))
20618 +               return 0;
20619 +
20620 +       index = ctx->pos - 2;
20621 +       if (index < size) {
20622 +               for (p += index; p->name; p++) {
20623 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20624 +                               vs_proc_instantiate, PROC_I(inode)->fd, p))
20625 +                               return 0;
20626 +                       ctx->pos++;
20627 +               }
20628 +       }
20629 +       return 1;
20630 +}
20631 +
20632 +
20633 +#define MAX_MULBY10    ((~0U - 9) / 10)
20634 +
20635 +static inline int atovid(const char *str, int len)
20636 +{
20637 +       int vid, c;
20638 +
20639 +       vid = 0;
20640 +       while (len-- > 0) {
20641 +               c = *str - '0';
20642 +               str++;
20643 +               if (c > 9)
20644 +                       return -1;
20645 +               if (vid >= MAX_MULBY10)
20646 +                       return -1;
20647 +               vid *= 10;
20648 +               vid += c;
20649 +               if (!vid)
20650 +                       return -1;
20651 +       }
20652 +       return vid;
20653 +}
20654 +
20655 +/* now the upper level (virtual) */
20656 +
20657 +
20658 +static struct file_operations proc_xid_file_operations = {
20659 +       .read =         generic_read_dir,
20660 +       .iterate =      proc_xid_iterate,
20661 +};
20662 +
20663 +static struct inode_operations proc_xid_inode_operations = {
20664 +       .lookup =       proc_xid_lookup,
20665 +};
20666 +
20667 +static struct vs_entry vx_virtual_stuff[] = {
20668 +       INF("info",     S_IRUGO, virtual_info),
20669 +       INF("status",   S_IRUGO, virtual_status),
20670 +       DIR(NULL,       S_IRUGO | S_IXUGO, xid),
20671 +};
20672 +
20673 +
20674 +static struct dentry *proc_virtual_lookup(struct inode *dir,
20675 +       struct dentry *dentry, unsigned int flags)
20676 +{
20677 +       struct vs_entry *p = vx_virtual_stuff;
20678 +       struct dentry *error = ERR_PTR(-ENOENT);
20679 +       int id = 0;
20680 +
20681 +       for (; p->name; p++) {
20682 +               if (p->len != dentry->d_name.len)
20683 +                       continue;
20684 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20685 +                       break;
20686 +       }
20687 +       if (p->name)
20688 +               goto instantiate;
20689 +
20690 +       id = atovid(dentry->d_name.name, dentry->d_name.len);
20691 +       if ((id < 0) || !xid_is_hashed(id))
20692 +               goto out;
20693 +
20694 +instantiate:
20695 +       error = proc_xid_instantiate(dir, dentry, id, p);
20696 +out:
20697 +       return error;
20698 +}
20699 +
20700 +static struct file_operations proc_nid_file_operations = {
20701 +       .read =         generic_read_dir,
20702 +       .iterate =      proc_nid_iterate,
20703 +};
20704 +
20705 +static struct inode_operations proc_nid_inode_operations = {
20706 +       .lookup =       proc_nid_lookup,
20707 +};
20708 +
20709 +static struct vs_entry nx_virtnet_stuff[] = {
20710 +       INF("info",     S_IRUGO, virtnet_info),
20711 +       INF("status",   S_IRUGO, virtnet_status),
20712 +       DIR(NULL,       S_IRUGO | S_IXUGO, nid),
20713 +};
20714 +
20715 +
20716 +static struct dentry *proc_virtnet_lookup(struct inode *dir,
20717 +       struct dentry *dentry, unsigned int flags)
20718 +{
20719 +       struct vs_entry *p = nx_virtnet_stuff;
20720 +       struct dentry *error = ERR_PTR(-ENOENT);
20721 +       int id = 0;
20722 +
20723 +       for (; p->name; p++) {
20724 +               if (p->len != dentry->d_name.len)
20725 +                       continue;
20726 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20727 +                       break;
20728 +       }
20729 +       if (p->name)
20730 +               goto instantiate;
20731 +
20732 +       id = atovid(dentry->d_name.name, dentry->d_name.len);
20733 +       if ((id < 0) || !nid_is_hashed(id))
20734 +               goto out;
20735 +
20736 +instantiate:
20737 +       error = proc_nid_instantiate(dir, dentry, id, p);
20738 +out:
20739 +       return error;
20740 +}
20741 +
20742 +
20743 +#define PROC_MAXVIDS 32
20744 +
20745 +int proc_virtual_iterate(struct file *filp, struct dir_context *ctx)
20746 +{
20747 +       struct vs_entry *p = vx_virtual_stuff;
20748 +       int size = sizeof(vx_virtual_stuff) / sizeof(struct vs_entry);
20749 +       int index;
20750 +       unsigned int xid_array[PROC_MAXVIDS];
20751 +       char buf[PROC_NUMBUF];
20752 +       unsigned int nr_xids, i;
20753 +
20754 +       if (!dir_emit_dots(filp, ctx))
20755 +               return 0;
20756 +
20757 +       index = ctx->pos - 2;
20758 +       if (index < size) {
20759 +               for (p += index; p->name; p++) {
20760 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20761 +                               vs_proc_instantiate, 0, p))
20762 +                               return 0;
20763 +                       ctx->pos++;
20764 +               }
20765 +       }
20766 +
20767 +       index = ctx->pos - size;
20768 +       p = &vx_virtual_stuff[size - 1];
20769 +       nr_xids = get_xid_list(index, xid_array, PROC_MAXVIDS);
20770 +       for (i = 0; i < nr_xids; i++) {
20771 +               int n, xid = xid_array[i];
20772 +               unsigned int j = PROC_NUMBUF;
20773 +
20774 +               n = xid;
20775 +               do
20776 +                       buf[--j] = '0' + (n % 10);
20777 +               while (n /= 10);
20778 +
20779 +               if (vx_proc_fill_cache(filp, ctx,
20780 +                       buf + j, PROC_NUMBUF - j,
20781 +                       vs_proc_instantiate, xid, p))
20782 +                       return 0;
20783 +               ctx->pos++;
20784 +       }
20785 +       return 0;
20786 +}
20787 +
20788 +static int proc_virtual_getattr(struct vfsmount *mnt,
20789 +       struct dentry *dentry, struct kstat *stat)
20790 +{
20791 +       struct inode *inode = dentry->d_inode;
20792 +
20793 +       generic_fillattr(inode, stat);
20794 +       stat->nlink = 2 + atomic_read(&vx_global_cactive);
20795 +       return 0;
20796 +}
20797 +
20798 +static struct file_operations proc_virtual_dir_operations = {
20799 +       .read =         generic_read_dir,
20800 +       .iterate =      proc_virtual_iterate,
20801 +};
20802 +
20803 +static struct inode_operations proc_virtual_dir_inode_operations = {
20804 +       .getattr =      proc_virtual_getattr,
20805 +       .lookup =       proc_virtual_lookup,
20806 +};
20807 +
20808 +
20809 +
20810 +int proc_virtnet_iterate(struct file *filp, struct dir_context *ctx)
20811 +{
20812 +       struct vs_entry *p = nx_virtnet_stuff;
20813 +       int size = sizeof(nx_virtnet_stuff) / sizeof(struct vs_entry);
20814 +       int index;
20815 +       unsigned int nid_array[PROC_MAXVIDS];
20816 +       char buf[PROC_NUMBUF];
20817 +       unsigned int nr_nids, i;
20818 +
20819 +       if (!dir_emit_dots(filp, ctx))
20820 +               return 0;
20821 +
20822 +       index = ctx->pos - 2;
20823 +       if (index < size) {
20824 +               for (p += index; p->name; p++) {
20825 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20826 +                               vs_proc_instantiate, 0, p))
20827 +                               return 0;
20828 +                       ctx->pos++;
20829 +               }
20830 +       }
20831 +
20832 +       index = ctx->pos - size;
20833 +       p = &nx_virtnet_stuff[size - 1];
20834 +       nr_nids = get_nid_list(index, nid_array, PROC_MAXVIDS);
20835 +       for (i = 0; i < nr_nids; i++) {
20836 +               int n, nid = nid_array[i];
20837 +               unsigned int j = PROC_NUMBUF;
20838 +
20839 +               n = nid;
20840 +               do
20841 +                       buf[--j] = '0' + (n % 10);
20842 +               while (n /= 10);
20843 +
20844 +               if (vx_proc_fill_cache(filp, ctx,
20845 +                       buf + j, PROC_NUMBUF - j,
20846 +                       vs_proc_instantiate, nid, p))
20847 +                       return 0;
20848 +               ctx->pos++;
20849 +       }
20850 +       return 0;
20851 +}
20852 +
20853 +static int proc_virtnet_getattr(struct vfsmount *mnt,
20854 +       struct dentry *dentry, struct kstat *stat)
20855 +{
20856 +       struct inode *inode = dentry->d_inode;
20857 +
20858 +       generic_fillattr(inode, stat);
20859 +       stat->nlink = 2 + atomic_read(&nx_global_cactive);
20860 +       return 0;
20861 +}
20862 +
20863 +static struct file_operations proc_virtnet_dir_operations = {
20864 +       .read =         generic_read_dir,
20865 +       .iterate =      proc_virtnet_iterate,
20866 +};
20867 +
20868 +static struct inode_operations proc_virtnet_dir_inode_operations = {
20869 +       .getattr =      proc_virtnet_getattr,
20870 +       .lookup =       proc_virtnet_lookup,
20871 +};
20872 +
20873 +
20874 +
20875 +void proc_vx_init(void)
20876 +{
20877 +       struct proc_dir_entry *ent;
20878 +
20879 +       ent = proc_mkdir("virtual", 0);
20880 +       if (ent) {
20881 +               ent->proc_fops = &proc_virtual_dir_operations;
20882 +               ent->proc_iops = &proc_virtual_dir_inode_operations;
20883 +       }
20884 +       proc_virtual = ent;
20885 +
20886 +       ent = proc_mkdir("virtnet", 0);
20887 +       if (ent) {
20888 +               ent->proc_fops = &proc_virtnet_dir_operations;
20889 +               ent->proc_iops = &proc_virtnet_dir_inode_operations;
20890 +       }
20891 +       proc_virtnet = ent;
20892 +}
20893 +
20894 +
20895 +
20896 +
20897 +/* per pid info */
20898 +
20899 +void render_cap_t(struct seq_file *, const char *,
20900 +       struct vx_info *, kernel_cap_t *);
20901 +
20902 +
20903 +int proc_pid_vx_info(
20904 +       struct seq_file *m,
20905 +       struct pid_namespace *ns,
20906 +       struct pid *pid,
20907 +       struct task_struct *p)
20908 +{
20909 +       struct vx_info *vxi;
20910 +
20911 +       seq_printf(m, "XID:\t%d\n", vx_task_xid(p));
20912 +
20913 +       vxi = task_get_vx_info(p);
20914 +       if (!vxi)
20915 +               return 0;
20916 +
20917 +       render_cap_t(m, "BCaps:\t", vxi, &vxi->vx_bcaps);
20918 +       seq_printf(m, "CCaps:\t%016llx\n",
20919 +               (unsigned long long)vxi->vx_ccaps);
20920 +       seq_printf(m, "CFlags:\t%016llx\n",
20921 +               (unsigned long long)vxi->vx_flags);
20922 +       seq_printf(m, "CIPid:\t%d\n", vxi->vx_initpid);
20923 +
20924 +       put_vx_info(vxi);
20925 +       return 0;
20926 +}
20927 +
20928 +
20929 +int proc_pid_nx_info(
20930 +       struct seq_file *m,
20931 +       struct pid_namespace *ns,
20932 +       struct pid *pid,
20933 +       struct task_struct *p)
20934 +{
20935 +       struct nx_info *nxi;
20936 +       struct nx_addr_v4 *v4a;
20937 +#ifdef CONFIG_IPV6
20938 +       struct nx_addr_v6 *v6a;
20939 +#endif
20940 +       int i;
20941 +
20942 +       seq_printf(m, "NID:\t%d\n", nx_task_nid(p));
20943 +
20944 +       nxi = task_get_nx_info(p);
20945 +       if (!nxi)
20946 +               return 0;
20947 +
20948 +       seq_printf(m, "NCaps:\t%016llx\n",
20949 +               (unsigned long long)nxi->nx_ncaps);
20950 +       seq_printf(m, "NFlags:\t%016llx\n",
20951 +               (unsigned long long)nxi->nx_flags);
20952 +
20953 +       seq_printf(m, "V4Root[bcast]:\t" NIPQUAD_FMT "\n",
20954 +               NIPQUAD(nxi->v4_bcast.s_addr));
20955 +       seq_printf(m, "V4Root[lback]:\t" NIPQUAD_FMT "\n",
20956 +               NIPQUAD(nxi->v4_lback.s_addr));
20957 +       if (!NX_IPV4(nxi))
20958 +               goto skip_v4;
20959 +       for (i = 0, v4a = &nxi->v4; v4a; i++, v4a = v4a->next)
20960 +               seq_printf(m, "V4Root[%d]:\t" NXAV4_FMT "\n",
20961 +                       i, NXAV4(v4a));
20962 +skip_v4:
20963 +#ifdef CONFIG_IPV6
20964 +       if (!NX_IPV6(nxi))
20965 +               goto skip_v6;
20966 +       for (i = 0, v6a = &nxi->v6; v6a; i++, v6a = v6a->next)
20967 +               seq_printf(m, "V6Root[%d]:\t" NXAV6_FMT "\n",
20968 +                       i, NXAV6(v6a));
20969 +skip_v6:
20970 +#endif
20971 +       put_nx_info(nxi);
20972 +       return 0;
20973 +}
20974 +
20975 diff -NurpP --minimal linux-4.4.111/kernel/vserver/sched.c linux-4.4.111-vs2.3.9.5/kernel/vserver/sched.c
20976 --- linux-4.4.111/kernel/vserver/sched.c        1970-01-01 00:00:00.000000000 +0000
20977 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/sched.c      2018-01-09 16:36:34.000000000 +0000
20978 @@ -0,0 +1,83 @@
20979 +/*
20980 + *  linux/kernel/vserver/sched.c
20981 + *
20982 + *  Virtual Server: Scheduler Support
20983 + *
20984 + *  Copyright (C) 2004-2010  Herbert P?tzl
20985 + *
20986 + *  V0.01  adapted Sam Vilains version to 2.6.3
20987 + *  V0.02  removed legacy interface
20988 + *  V0.03  changed vcmds to vxi arg
20989 + *  V0.04  removed older and legacy interfaces
20990 + *  V0.05  removed scheduler code/commands
20991 + *
20992 + */
20993 +
20994 +#include <linux/vs_context.h>
20995 +#include <linux/vs_sched.h>
20996 +#include <linux/cpumask.h>
20997 +#include <linux/vserver/sched_cmd.h>
20998 +
20999 +#include <asm/uaccess.h>
21000 +
21001 +
21002 +void vx_update_sched_param(struct _vx_sched *sched,
21003 +       struct _vx_sched_pc *sched_pc)
21004 +{
21005 +       sched_pc->prio_bias = sched->prio_bias;
21006 +}
21007 +
21008 +static int do_set_prio_bias(struct vx_info *vxi, struct vcmd_prio_bias *data)
21009 +{
21010 +       int cpu;
21011 +
21012 +       if (data->prio_bias > MAX_PRIO_BIAS)
21013 +               data->prio_bias = MAX_PRIO_BIAS;
21014 +       if (data->prio_bias < MIN_PRIO_BIAS)
21015 +               data->prio_bias = MIN_PRIO_BIAS;
21016 +
21017 +       if (data->cpu_id != ~0) {
21018 +               vxi->sched.update = *get_cpu_mask(data->cpu_id);
21019 +               cpumask_and(&vxi->sched.update, &vxi->sched.update,
21020 +                       cpu_online_mask);
21021 +       } else
21022 +               cpumask_copy(&vxi->sched.update, cpu_online_mask);
21023 +
21024 +       for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)vxi->sched.update)
21025 +               vx_update_sched_param(&vxi->sched,
21026 +                       &vx_per_cpu(vxi, sched_pc, cpu));
21027 +       return 0;
21028 +}
21029 +
21030 +int vc_set_prio_bias(struct vx_info *vxi, void __user *data)
21031 +{
21032 +       struct vcmd_prio_bias vc_data;
21033 +
21034 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21035 +               return -EFAULT;
21036 +
21037 +       return do_set_prio_bias(vxi, &vc_data);
21038 +}
21039 +
21040 +int vc_get_prio_bias(struct vx_info *vxi, void __user *data)
21041 +{
21042 +       struct vcmd_prio_bias vc_data;
21043 +       struct _vx_sched_pc *pcd;
21044 +       int cpu;
21045 +
21046 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21047 +               return -EFAULT;
21048 +
21049 +       cpu = vc_data.cpu_id;
21050 +
21051 +       if (!cpu_possible(cpu))
21052 +               return -EINVAL;
21053 +
21054 +       pcd = &vx_per_cpu(vxi, sched_pc, cpu);
21055 +       vc_data.prio_bias = pcd->prio_bias;
21056 +
21057 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
21058 +               return -EFAULT;
21059 +       return 0;
21060 +}
21061 +
21062 diff -NurpP --minimal linux-4.4.111/kernel/vserver/sched_init.h linux-4.4.111-vs2.3.9.5/kernel/vserver/sched_init.h
21063 --- linux-4.4.111/kernel/vserver/sched_init.h   1970-01-01 00:00:00.000000000 +0000
21064 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/sched_init.h 2018-01-09 16:36:34.000000000 +0000
21065 @@ -0,0 +1,27 @@
21066 +
21067 +static inline void vx_info_init_sched(struct _vx_sched *sched)
21068 +{
21069 +       /* scheduling; hard code starting values as constants */
21070 +       sched->prio_bias = 0;
21071 +}
21072 +
21073 +static inline
21074 +void vx_info_init_sched_pc(struct _vx_sched_pc *sched_pc, int cpu)
21075 +{
21076 +       sched_pc->prio_bias = 0;
21077 +
21078 +       sched_pc->user_ticks = 0;
21079 +       sched_pc->sys_ticks = 0;
21080 +       sched_pc->hold_ticks = 0;
21081 +}
21082 +
21083 +static inline void vx_info_exit_sched(struct _vx_sched *sched)
21084 +{
21085 +       return;
21086 +}
21087 +
21088 +static inline
21089 +void vx_info_exit_sched_pc(struct _vx_sched_pc *sched_pc, int cpu)
21090 +{
21091 +       return;
21092 +}
21093 diff -NurpP --minimal linux-4.4.111/kernel/vserver/sched_proc.h linux-4.4.111-vs2.3.9.5/kernel/vserver/sched_proc.h
21094 --- linux-4.4.111/kernel/vserver/sched_proc.h   1970-01-01 00:00:00.000000000 +0000
21095 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/sched_proc.h 2018-01-09 16:36:34.000000000 +0000
21096 @@ -0,0 +1,32 @@
21097 +#ifndef _VX_SCHED_PROC_H
21098 +#define _VX_SCHED_PROC_H
21099 +
21100 +
21101 +static inline
21102 +int vx_info_proc_sched(struct _vx_sched *sched, char *buffer)
21103 +{
21104 +       int length = 0;
21105 +
21106 +       length += sprintf(buffer,
21107 +               "PrioBias:\t%8d\n",
21108 +               sched->prio_bias);
21109 +       return length;
21110 +}
21111 +
21112 +static inline
21113 +int vx_info_proc_sched_pc(struct _vx_sched_pc *sched_pc,
21114 +       char *buffer, int cpu)
21115 +{
21116 +       int length = 0;
21117 +
21118 +       length += sprintf(buffer + length,
21119 +               "cpu %d: %lld %lld %lld", cpu,
21120 +               (unsigned long long)sched_pc->user_ticks,
21121 +               (unsigned long long)sched_pc->sys_ticks,
21122 +               (unsigned long long)sched_pc->hold_ticks);
21123 +       length += sprintf(buffer + length,
21124 +               " %d\n", sched_pc->prio_bias);
21125 +       return length;
21126 +}
21127 +
21128 +#endif /* _VX_SCHED_PROC_H */
21129 diff -NurpP --minimal linux-4.4.111/kernel/vserver/signal.c linux-4.4.111-vs2.3.9.5/kernel/vserver/signal.c
21130 --- linux-4.4.111/kernel/vserver/signal.c       1970-01-01 00:00:00.000000000 +0000
21131 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/signal.c     2018-01-09 16:36:34.000000000 +0000
21132 @@ -0,0 +1,134 @@
21133 +/*
21134 + *  linux/kernel/vserver/signal.c
21135 + *
21136 + *  Virtual Server: Signal Support
21137 + *
21138 + *  Copyright (C) 2003-2007  Herbert P?tzl
21139 + *
21140 + *  V0.01  broken out from vcontext V0.05
21141 + *  V0.02  changed vcmds to vxi arg
21142 + *  V0.03  adjusted siginfo for kill
21143 + *
21144 + */
21145 +
21146 +#include <asm/uaccess.h>
21147 +
21148 +#include <linux/vs_context.h>
21149 +#include <linux/vs_pid.h>
21150 +#include <linux/vserver/signal_cmd.h>
21151 +
21152 +
21153 +int vx_info_kill(struct vx_info *vxi, int pid, int sig)
21154 +{
21155 +       int retval, count = 0;
21156 +       struct task_struct *p;
21157 +       struct siginfo *sip = SEND_SIG_PRIV;
21158 +
21159 +       retval = -ESRCH;
21160 +       vxdprintk(VXD_CBIT(misc, 4),
21161 +               "vx_info_kill(%p[#%d],%d,%d)*",
21162 +               vxi, vxi->vx_id, pid, sig);
21163 +       read_lock(&tasklist_lock);
21164 +       switch (pid) {
21165 +       case  0:
21166 +       case -1:
21167 +               for_each_process(p) {
21168 +                       int err = 0;
21169 +
21170 +                       if (vx_task_xid(p) != vxi->vx_id || p->pid <= 1 ||
21171 +                               (pid && vxi->vx_initpid == p->pid))
21172 +                               continue;
21173 +
21174 +                       err = group_send_sig_info(sig, sip, p);
21175 +                       ++count;
21176 +                       if (err != -EPERM)
21177 +                               retval = err;
21178 +               }
21179 +               break;
21180 +
21181 +       case 1:
21182 +               if (vxi->vx_initpid) {
21183 +                       pid = vxi->vx_initpid;
21184 +                       /* for now, only SIGINT to private init ... */
21185 +                       if (!vx_info_flags(vxi, VXF_STATE_ADMIN, 0) &&
21186 +                               /* ... as long as there are tasks left */
21187 +                               (atomic_read(&vxi->vx_tasks) > 1))
21188 +                               sig = SIGINT;
21189 +               }
21190 +               /* fallthrough */
21191 +       default:
21192 +               rcu_read_lock();
21193 +               p = find_task_by_real_pid(pid);
21194 +               rcu_read_unlock();
21195 +               if (p) {
21196 +                       if (vx_task_xid(p) == vxi->vx_id)
21197 +                               retval = group_send_sig_info(sig, sip, p);
21198 +               }
21199 +               break;
21200 +       }
21201 +       read_unlock(&tasklist_lock);
21202 +       vxdprintk(VXD_CBIT(misc, 4),
21203 +               "vx_info_kill(%p[#%d],%d,%d,%ld) = %d",
21204 +               vxi, vxi->vx_id, pid, sig, (long)sip, retval);
21205 +       return retval;
21206 +}
21207 +
21208 +int vc_ctx_kill(struct vx_info *vxi, void __user *data)
21209 +{
21210 +       struct vcmd_ctx_kill_v0 vc_data;
21211 +
21212 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21213 +               return -EFAULT;
21214 +
21215 +       /* special check to allow guest shutdown */
21216 +       if (!vx_info_flags(vxi, VXF_STATE_ADMIN, 0) &&
21217 +               /* forbid killall pid=0 when init is present */
21218 +               (((vc_data.pid < 1) && vxi->vx_initpid) ||
21219 +               (vc_data.pid > 1)))
21220 +               return -EACCES;
21221 +
21222 +       return vx_info_kill(vxi, vc_data.pid, vc_data.sig);
21223 +}
21224 +
21225 +
21226 +static int __wait_exit(struct vx_info *vxi)
21227 +{
21228 +       DECLARE_WAITQUEUE(wait, current);
21229 +       int ret = 0;
21230 +
21231 +       add_wait_queue(&vxi->vx_wait, &wait);
21232 +       set_current_state(TASK_INTERRUPTIBLE);
21233 +
21234 +wait:
21235 +       if (vx_info_state(vxi,
21236 +               VXS_SHUTDOWN | VXS_HASHED | VXS_HELPER) == VXS_SHUTDOWN)
21237 +               goto out;
21238 +       if (signal_pending(current)) {
21239 +               ret = -ERESTARTSYS;
21240 +               goto out;
21241 +       }
21242 +       schedule();
21243 +       goto wait;
21244 +
21245 +out:
21246 +       set_current_state(TASK_RUNNING);
21247 +       remove_wait_queue(&vxi->vx_wait, &wait);
21248 +       return ret;
21249 +}
21250 +
21251 +
21252 +
21253 +int vc_wait_exit(struct vx_info *vxi, void __user *data)
21254 +{
21255 +       struct vcmd_wait_exit_v0 vc_data;
21256 +       int ret;
21257 +
21258 +       ret = __wait_exit(vxi);
21259 +       vc_data.reboot_cmd = vxi->reboot_cmd;
21260 +       vc_data.exit_code = vxi->exit_code;
21261 +
21262 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
21263 +               ret = -EFAULT;
21264 +       return ret;
21265 +}
21266 +
21267 diff -NurpP --minimal linux-4.4.111/kernel/vserver/space.c linux-4.4.111-vs2.3.9.5/kernel/vserver/space.c
21268 --- linux-4.4.111/kernel/vserver/space.c        1970-01-01 00:00:00.000000000 +0000
21269 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/space.c      2018-01-09 16:36:34.000000000 +0000
21270 @@ -0,0 +1,436 @@
21271 +/*
21272 + *  linux/kernel/vserver/space.c
21273 + *
21274 + *  Virtual Server: Context Space Support
21275 + *
21276 + *  Copyright (C) 2003-2010  Herbert P?tzl
21277 + *
21278 + *  V0.01  broken out from context.c 0.07
21279 + *  V0.02  added task locking for namespace
21280 + *  V0.03  broken out vx_enter_namespace
21281 + *  V0.04  added *space support and commands
21282 + *  V0.05  added credential support
21283 + *
21284 + */
21285 +
21286 +#include <linux/utsname.h>
21287 +#include <linux/nsproxy.h>
21288 +#include <linux/err.h>
21289 +#include <linux/fs_struct.h>
21290 +#include <linux/cred.h>
21291 +#include <asm/uaccess.h>
21292 +
21293 +#include <linux/vs_context.h>
21294 +#include <linux/vserver/space.h>
21295 +#include <linux/vserver/space_cmd.h>
21296 +
21297 +atomic_t vs_global_nsproxy     = ATOMIC_INIT(0);
21298 +atomic_t vs_global_fs          = ATOMIC_INIT(0);
21299 +atomic_t vs_global_mnt_ns      = ATOMIC_INIT(0);
21300 +atomic_t vs_global_uts_ns      = ATOMIC_INIT(0);
21301 +atomic_t vs_global_user_ns     = ATOMIC_INIT(0);
21302 +atomic_t vs_global_pid_ns      = ATOMIC_INIT(0);
21303 +
21304 +
21305 +/* namespace functions */
21306 +
21307 +#include <linux/mnt_namespace.h>
21308 +#include <linux/user_namespace.h>
21309 +#include <linux/pid_namespace.h>
21310 +#include <linux/ipc_namespace.h>
21311 +#include <net/net_namespace.h>
21312 +#include "../fs/mount.h"
21313 +
21314 +
21315 +static const struct vcmd_space_mask_v1 space_mask_v0 = {
21316 +       .mask = CLONE_FS |
21317 +               CLONE_NEWNS |
21318 +#ifdef CONFIG_UTS_NS
21319 +               CLONE_NEWUTS |
21320 +#endif
21321 +#ifdef CONFIG_IPC_NS
21322 +               CLONE_NEWIPC |
21323 +#endif
21324 +#ifdef CONFIG_USER_NS
21325 +               CLONE_NEWUSER |
21326 +#endif
21327 +               0
21328 +};
21329 +
21330 +static const struct vcmd_space_mask_v1 space_mask = {
21331 +       .mask = CLONE_FS |
21332 +               CLONE_NEWNS |
21333 +#ifdef CONFIG_UTS_NS
21334 +               CLONE_NEWUTS |
21335 +#endif
21336 +#ifdef CONFIG_IPC_NS
21337 +               CLONE_NEWIPC |
21338 +#endif
21339 +#ifdef CONFIG_USER_NS
21340 +               CLONE_NEWUSER |
21341 +#endif
21342 +#ifdef CONFIG_PID_NS
21343 +               CLONE_NEWPID |
21344 +#endif
21345 +#ifdef CONFIG_NET_NS
21346 +               CLONE_NEWNET |
21347 +#endif
21348 +               0
21349 +};
21350 +
21351 +static const struct vcmd_space_mask_v1 default_space_mask = {
21352 +       .mask = CLONE_FS |
21353 +               CLONE_NEWNS |
21354 +#ifdef CONFIG_UTS_NS
21355 +               CLONE_NEWUTS |
21356 +#endif
21357 +#ifdef CONFIG_IPC_NS
21358 +               CLONE_NEWIPC |
21359 +#endif
21360 +#ifdef CONFIG_USER_NS
21361 +//             CLONE_NEWUSER |
21362 +#endif
21363 +#ifdef CONFIG_PID_NS
21364 +//             CLONE_NEWPID |
21365 +#endif
21366 +               0
21367 +};
21368 +
21369 +/*
21370 + *     build a new nsproxy mix
21371 + *      assumes that both proxies are 'const'
21372 + *     does not touch nsproxy refcounts
21373 + *     will hold a reference on the result.
21374 + */
21375 +
21376 +struct nsproxy *vs_mix_nsproxy(struct nsproxy *old_nsproxy,
21377 +       struct nsproxy *new_nsproxy, unsigned long mask)
21378 +{
21379 +       struct mnt_namespace *old_ns;
21380 +       struct uts_namespace *old_uts;
21381 +       struct ipc_namespace *old_ipc;
21382 +#ifdef CONFIG_PID_NS
21383 +       struct pid_namespace *old_pid;
21384 +#endif
21385 +#ifdef CONFIG_NET_NS
21386 +       struct net *old_net;
21387 +#endif
21388 +       struct nsproxy *nsproxy;
21389 +
21390 +       nsproxy = copy_nsproxy(old_nsproxy);
21391 +       if (!nsproxy)
21392 +               goto out;
21393 +
21394 +       if (mask & CLONE_NEWNS) {
21395 +               old_ns = nsproxy->mnt_ns;
21396 +               nsproxy->mnt_ns = new_nsproxy->mnt_ns;
21397 +               if (nsproxy->mnt_ns)
21398 +                       get_mnt_ns(nsproxy->mnt_ns);
21399 +       } else
21400 +               old_ns = NULL;
21401 +
21402 +       if (mask & CLONE_NEWUTS) {
21403 +               old_uts = nsproxy->uts_ns;
21404 +               nsproxy->uts_ns = new_nsproxy->uts_ns;
21405 +               if (nsproxy->uts_ns)
21406 +                       get_uts_ns(nsproxy->uts_ns);
21407 +       } else
21408 +               old_uts = NULL;
21409 +
21410 +       if (mask & CLONE_NEWIPC) {
21411 +               old_ipc = nsproxy->ipc_ns;
21412 +               nsproxy->ipc_ns = new_nsproxy->ipc_ns;
21413 +               if (nsproxy->ipc_ns)
21414 +                       get_ipc_ns(nsproxy->ipc_ns);
21415 +       } else
21416 +               old_ipc = NULL;
21417 +
21418 +#ifdef CONFIG_PID_NS
21419 +       if (mask & CLONE_NEWPID) {
21420 +               old_pid = nsproxy->pid_ns_for_children;
21421 +               nsproxy->pid_ns_for_children = new_nsproxy->pid_ns_for_children;
21422 +               if (nsproxy->pid_ns_for_children)
21423 +                       get_pid_ns(nsproxy->pid_ns_for_children);
21424 +       } else
21425 +               old_pid = NULL;
21426 +#endif
21427 +#ifdef CONFIG_NET_NS
21428 +       if (mask & CLONE_NEWNET) {
21429 +               old_net = nsproxy->net_ns;
21430 +               nsproxy->net_ns = new_nsproxy->net_ns;
21431 +               if (nsproxy->net_ns)
21432 +                       get_net(nsproxy->net_ns);
21433 +       } else
21434 +               old_net = NULL;
21435 +#endif
21436 +       if (old_ns)
21437 +               put_mnt_ns(old_ns);
21438 +       if (old_uts)
21439 +               put_uts_ns(old_uts);
21440 +       if (old_ipc)
21441 +               put_ipc_ns(old_ipc);
21442 +#ifdef CONFIG_PID_NS
21443 +       if (old_pid)
21444 +               put_pid_ns(old_pid);
21445 +#endif
21446 +#ifdef CONFIG_NET_NS
21447 +       if (old_net)
21448 +               put_net(old_net);
21449 +#endif
21450 +out:
21451 +       return nsproxy;
21452 +}
21453 +
21454 +
21455 +/*
21456 + *     merge two nsproxy structs into a new one.
21457 + *     will hold a reference on the result.
21458 + */
21459 +
21460 +static inline
21461 +struct nsproxy *__vs_merge_nsproxy(struct nsproxy *old,
21462 +       struct nsproxy *proxy, unsigned long mask)
21463 +{
21464 +       struct nsproxy null_proxy = { .mnt_ns = NULL };
21465 +
21466 +       if (!proxy)
21467 +               return NULL;
21468 +
21469 +       if (mask) {
21470 +               /* vs_mix_nsproxy returns with reference */
21471 +               return vs_mix_nsproxy(old ? old : &null_proxy,
21472 +                       proxy, mask);
21473 +       }
21474 +       get_nsproxy(proxy);
21475 +       return proxy;
21476 +}
21477 +
21478 +
21479 +int vx_enter_space(struct vx_info *vxi, unsigned long mask, unsigned index)
21480 +{
21481 +       struct nsproxy *proxy, *proxy_cur, *proxy_new;
21482 +       struct fs_struct *fs_cur, *fs = NULL;
21483 +       struct _vx_space *space;
21484 +       int ret, kill = 0;
21485 +
21486 +       vxdprintk(VXD_CBIT(space, 8), "vx_enter_space(%p[#%u],0x%08lx,%d)",
21487 +               vxi, vxi->vx_id, mask, index);
21488 +
21489 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0))
21490 +               return -EACCES;
21491 +
21492 +       if (index >= VX_SPACES)
21493 +               return -EINVAL;
21494 +
21495 +       space = &vxi->space[index];
21496 +
21497 +       if (!mask)
21498 +               mask = space->vx_nsmask;
21499 +
21500 +       if ((mask & space->vx_nsmask) != mask)
21501 +               return -EINVAL;
21502 +
21503 +       if (mask & CLONE_FS) {
21504 +               fs = copy_fs_struct(space->vx_fs);
21505 +               if (!fs)
21506 +                       return -ENOMEM;
21507 +       }
21508 +       proxy = space->vx_nsproxy;
21509 +
21510 +       vxdprintk(VXD_CBIT(space, 9),
21511 +               "vx_enter_space(%p[#%u],0x%08lx,%d) -> (%p,%p)",
21512 +               vxi, vxi->vx_id, mask, index, proxy, fs);
21513 +
21514 +       task_lock(current);
21515 +       fs_cur = current->fs;
21516 +
21517 +       if (mask & CLONE_FS) {
21518 +               spin_lock(&fs_cur->lock);
21519 +               current->fs = fs;
21520 +               kill = !--fs_cur->users;
21521 +               spin_unlock(&fs_cur->lock);
21522 +       }
21523 +
21524 +       proxy_cur = current->nsproxy;
21525 +       get_nsproxy(proxy_cur);
21526 +       task_unlock(current);
21527 +
21528 +       if (kill)
21529 +               free_fs_struct(fs_cur);
21530 +
21531 +       proxy_new = __vs_merge_nsproxy(proxy_cur, proxy, mask);
21532 +       if (IS_ERR(proxy_new)) {
21533 +               ret = PTR_ERR(proxy_new);
21534 +               goto out_put;
21535 +       }
21536 +
21537 +       proxy_new = xchg(&current->nsproxy, proxy_new);
21538 +
21539 +       if (mask & CLONE_NEWUSER) {
21540 +               struct cred *cred;
21541 +
21542 +               vxdprintk(VXD_CBIT(space, 10),
21543 +                       "vx_enter_space(%p[#%u],%p) cred (%p,%p)",
21544 +                       vxi, vxi->vx_id, space->vx_cred,
21545 +                       current->real_cred, current->cred);
21546 +
21547 +               if (space->vx_cred) {
21548 +                       cred = __prepare_creds(space->vx_cred);
21549 +                       if (cred)
21550 +                               commit_creds(cred);
21551 +               }
21552 +       }
21553 +
21554 +       ret = 0;
21555 +
21556 +       if (proxy_new)
21557 +               put_nsproxy(proxy_new);
21558 +out_put:
21559 +       if (proxy_cur)
21560 +               put_nsproxy(proxy_cur);
21561 +       return ret;
21562 +}
21563 +
21564 +
21565 +int vx_set_space(struct vx_info *vxi, unsigned long mask, unsigned index)
21566 +{
21567 +       struct nsproxy *proxy_vxi, *proxy_cur, *proxy_new;
21568 +       struct fs_struct *fs_vxi, *fs = NULL;
21569 +       struct _vx_space *space;
21570 +       int ret, kill = 0;
21571 +
21572 +       vxdprintk(VXD_CBIT(space, 8), "vx_set_space(%p[#%u],0x%08lx,%d)",
21573 +               vxi, vxi->vx_id, mask, index);
21574 +
21575 +       if ((mask & space_mask.mask) != mask)
21576 +               return -EINVAL;
21577 +
21578 +       if (index >= VX_SPACES)
21579 +               return -EINVAL;
21580 +
21581 +       space = &vxi->space[index];
21582 +
21583 +       proxy_vxi = space->vx_nsproxy;
21584 +       fs_vxi = space->vx_fs;
21585 +
21586 +       if (mask & CLONE_FS) {
21587 +               fs = copy_fs_struct(current->fs);
21588 +               if (!fs)
21589 +                       return -ENOMEM;
21590 +       }
21591 +
21592 +       task_lock(current);
21593 +
21594 +       if (mask & CLONE_FS) {
21595 +               spin_lock(&fs_vxi->lock);
21596 +               space->vx_fs = fs;
21597 +               kill = !--fs_vxi->users;
21598 +               spin_unlock(&fs_vxi->lock);
21599 +       }
21600 +
21601 +       proxy_cur = current->nsproxy;
21602 +       get_nsproxy(proxy_cur);
21603 +       task_unlock(current);
21604 +
21605 +       if (kill)
21606 +               free_fs_struct(fs_vxi);
21607 +
21608 +       proxy_new = __vs_merge_nsproxy(proxy_vxi, proxy_cur, mask);
21609 +       if (IS_ERR(proxy_new)) {
21610 +               ret = PTR_ERR(proxy_new);
21611 +               goto out_put;
21612 +       }
21613 +
21614 +       proxy_new = xchg(&space->vx_nsproxy, proxy_new);
21615 +       space->vx_nsmask |= mask;
21616 +
21617 +       if (mask & CLONE_NEWUSER) {
21618 +               struct cred *cred;
21619 +
21620 +               vxdprintk(VXD_CBIT(space, 10),
21621 +                       "vx_set_space(%p[#%u],%p) cred (%p,%p)",
21622 +                       vxi, vxi->vx_id, space->vx_cred,
21623 +                       current->real_cred, current->cred);
21624 +
21625 +               cred = prepare_creds();
21626 +               cred = (struct cred *)xchg(&space->vx_cred, cred);
21627 +               if (cred)
21628 +                       abort_creds(cred);
21629 +       }
21630 +
21631 +       ret = 0;
21632 +
21633 +       if (proxy_new)
21634 +               put_nsproxy(proxy_new);
21635 +out_put:
21636 +       if (proxy_cur)
21637 +               put_nsproxy(proxy_cur);
21638 +       return ret;
21639 +}
21640 +
21641 +
21642 +int vc_enter_space_v1(struct vx_info *vxi, void __user *data)
21643 +{
21644 +       struct vcmd_space_mask_v1 vc_data = { .mask = 0 };
21645 +
21646 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21647 +               return -EFAULT;
21648 +
21649 +       return vx_enter_space(vxi, vc_data.mask, 0);
21650 +}
21651 +
21652 +int vc_enter_space(struct vx_info *vxi, void __user *data)
21653 +{
21654 +       struct vcmd_space_mask_v2 vc_data = { .mask = 0 };
21655 +
21656 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21657 +               return -EFAULT;
21658 +
21659 +       if (vc_data.index >= VX_SPACES)
21660 +               return -EINVAL;
21661 +
21662 +       return vx_enter_space(vxi, vc_data.mask, vc_data.index);
21663 +}
21664 +
21665 +int vc_set_space_v1(struct vx_info *vxi, void __user *data)
21666 +{
21667 +       struct vcmd_space_mask_v1 vc_data = { .mask = 0 };
21668 +
21669 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21670 +               return -EFAULT;
21671 +
21672 +       return vx_set_space(vxi, vc_data.mask, 0);
21673 +}
21674 +
21675 +int vc_set_space(struct vx_info *vxi, void __user *data)
21676 +{
21677 +       struct vcmd_space_mask_v2 vc_data = { .mask = 0 };
21678 +
21679 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21680 +               return -EFAULT;
21681 +
21682 +       if (vc_data.index >= VX_SPACES)
21683 +               return -EINVAL;
21684 +
21685 +       return vx_set_space(vxi, vc_data.mask, vc_data.index);
21686 +}
21687 +
21688 +int vc_get_space_mask(void __user *data, int type)
21689 +{
21690 +       const struct vcmd_space_mask_v1 *mask;
21691 +
21692 +       if (type == 0)
21693 +               mask = &space_mask_v0;
21694 +       else if (type == 1)
21695 +               mask = &space_mask;
21696 +       else
21697 +               mask = &default_space_mask;
21698 +
21699 +       vxdprintk(VXD_CBIT(space, 10),
21700 +               "vc_get_space_mask(%d) = %08llx", type, mask->mask);
21701 +
21702 +       if (copy_to_user(data, mask, sizeof(*mask)))
21703 +               return -EFAULT;
21704 +       return 0;
21705 +}
21706 +
21707 diff -NurpP --minimal linux-4.4.111/kernel/vserver/switch.c linux-4.4.111-vs2.3.9.5/kernel/vserver/switch.c
21708 --- linux-4.4.111/kernel/vserver/switch.c       1970-01-01 00:00:00.000000000 +0000
21709 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/switch.c     2018-01-09 16:36:34.000000000 +0000
21710 @@ -0,0 +1,556 @@
21711 +/*
21712 + *  linux/kernel/vserver/switch.c
21713 + *
21714 + *  Virtual Server: Syscall Switch
21715 + *
21716 + *  Copyright (C) 2003-2011  Herbert P?tzl
21717 + *
21718 + *  V0.01  syscall switch
21719 + *  V0.02  added signal to context
21720 + *  V0.03  added rlimit functions
21721 + *  V0.04  added iattr, task/xid functions
21722 + *  V0.05  added debug/history stuff
21723 + *  V0.06  added compat32 layer
21724 + *  V0.07  vcmd args and perms
21725 + *  V0.08  added status commands
21726 + *  V0.09  added tag commands
21727 + *  V0.10  added oom bias
21728 + *  V0.11  added device commands
21729 + *  V0.12  added warn mask
21730 + *
21731 + */
21732 +
21733 +#include <linux/vs_context.h>
21734 +#include <linux/vs_network.h>
21735 +#include <linux/vserver/switch.h>
21736 +
21737 +#include "vci_config.h"
21738 +
21739 +
21740 +static inline
21741 +int vc_get_version(uint32_t id)
21742 +{
21743 +       return VCI_VERSION;
21744 +}
21745 +
21746 +static inline
21747 +int vc_get_vci(uint32_t id)
21748 +{
21749 +       return vci_kernel_config();
21750 +}
21751 +
21752 +#include <linux/vserver/context_cmd.h>
21753 +#include <linux/vserver/cvirt_cmd.h>
21754 +#include <linux/vserver/cacct_cmd.h>
21755 +#include <linux/vserver/limit_cmd.h>
21756 +#include <linux/vserver/network_cmd.h>
21757 +#include <linux/vserver/sched_cmd.h>
21758 +#include <linux/vserver/debug_cmd.h>
21759 +#include <linux/vserver/inode_cmd.h>
21760 +#include <linux/vserver/dlimit_cmd.h>
21761 +#include <linux/vserver/signal_cmd.h>
21762 +#include <linux/vserver/space_cmd.h>
21763 +#include <linux/vserver/tag_cmd.h>
21764 +#include <linux/vserver/device_cmd.h>
21765 +
21766 +#include <linux/vserver/inode.h>
21767 +#include <linux/vserver/dlimit.h>
21768 +
21769 +
21770 +#ifdef CONFIG_COMPAT
21771 +#define __COMPAT(name, id, data, compat)       \
21772 +       (compat) ? name ## _x32(id, data) : name(id, data)
21773 +#define __COMPAT_NO_ID(name, data, compat)     \
21774 +       (compat) ? name ## _x32(data) : name(data)
21775 +#else
21776 +#define __COMPAT(name, id, data, compat)       \
21777 +       name(id, data)
21778 +#define __COMPAT_NO_ID(name, data, compat)     \
21779 +       name(data)
21780 +#endif
21781 +
21782 +
21783 +static inline
21784 +long do_vcmd(uint32_t cmd, uint32_t id,
21785 +       struct vx_info *vxi, struct nx_info *nxi,
21786 +       void __user *data, int compat)
21787 +{
21788 +       switch (cmd) {
21789 +
21790 +       case VCMD_get_version:
21791 +               return vc_get_version(id);
21792 +       case VCMD_get_vci:
21793 +               return vc_get_vci(id);
21794 +
21795 +       case VCMD_task_xid:
21796 +               return vc_task_xid(id);
21797 +       case VCMD_vx_info:
21798 +               return vc_vx_info(vxi, data);
21799 +
21800 +       case VCMD_task_nid:
21801 +               return vc_task_nid(id);
21802 +       case VCMD_nx_info:
21803 +               return vc_nx_info(nxi, data);
21804 +
21805 +       case VCMD_task_tag:
21806 +               return vc_task_tag(id);
21807 +
21808 +       case VCMD_set_space_v1:
21809 +               return vc_set_space_v1(vxi, data);
21810 +       /* this is version 2 */
21811 +       case VCMD_set_space:
21812 +               return vc_set_space(vxi, data);
21813 +
21814 +       case VCMD_get_space_mask_v0:
21815 +               return vc_get_space_mask(data, 0);
21816 +       /* this is version 1 */
21817 +       case VCMD_get_space_mask:
21818 +               return vc_get_space_mask(data, 1);
21819 +
21820 +       case VCMD_get_space_default:
21821 +               return vc_get_space_mask(data, -1);
21822 +
21823 +       case VCMD_set_umask:
21824 +               return vc_set_umask(vxi, data);
21825 +
21826 +       case VCMD_get_umask:
21827 +               return vc_get_umask(vxi, data);
21828 +
21829 +       case VCMD_set_wmask:
21830 +               return vc_set_wmask(vxi, data);
21831 +
21832 +       case VCMD_get_wmask:
21833 +               return vc_get_wmask(vxi, data);
21834 +#ifdef CONFIG_IA32_EMULATION
21835 +       case VCMD_get_rlimit:
21836 +               return __COMPAT(vc_get_rlimit, vxi, data, compat);
21837 +       case VCMD_set_rlimit:
21838 +               return __COMPAT(vc_set_rlimit, vxi, data, compat);
21839 +#else
21840 +       case VCMD_get_rlimit:
21841 +               return vc_get_rlimit(vxi, data);
21842 +       case VCMD_set_rlimit:
21843 +               return vc_set_rlimit(vxi, data);
21844 +#endif
21845 +       case VCMD_get_rlimit_mask:
21846 +               return vc_get_rlimit_mask(id, data);
21847 +       case VCMD_reset_hits:
21848 +               return vc_reset_hits(vxi, data);
21849 +       case VCMD_reset_minmax:
21850 +               return vc_reset_minmax(vxi, data);
21851 +
21852 +       case VCMD_get_vhi_name:
21853 +               return vc_get_vhi_name(vxi, data);
21854 +       case VCMD_set_vhi_name:
21855 +               return vc_set_vhi_name(vxi, data);
21856 +
21857 +       case VCMD_ctx_stat:
21858 +               return vc_ctx_stat(vxi, data);
21859 +       case VCMD_virt_stat:
21860 +               return vc_virt_stat(vxi, data);
21861 +       case VCMD_sock_stat:
21862 +               return vc_sock_stat(vxi, data);
21863 +       case VCMD_rlimit_stat:
21864 +               return vc_rlimit_stat(vxi, data);
21865 +
21866 +       case VCMD_set_cflags:
21867 +               return vc_set_cflags(vxi, data);
21868 +       case VCMD_get_cflags:
21869 +               return vc_get_cflags(vxi, data);
21870 +
21871 +       /* this is version 1 */
21872 +       case VCMD_set_ccaps:
21873 +               return vc_set_ccaps(vxi, data);
21874 +       /* this is version 1 */
21875 +       case VCMD_get_ccaps:
21876 +               return vc_get_ccaps(vxi, data);
21877 +       case VCMD_set_bcaps:
21878 +               return vc_set_bcaps(vxi, data);
21879 +       case VCMD_get_bcaps:
21880 +               return vc_get_bcaps(vxi, data);
21881 +
21882 +       case VCMD_set_badness:
21883 +               return vc_set_badness(vxi, data);
21884 +       case VCMD_get_badness:
21885 +               return vc_get_badness(vxi, data);
21886 +
21887 +       case VCMD_set_nflags:
21888 +               return vc_set_nflags(nxi, data);
21889 +       case VCMD_get_nflags:
21890 +               return vc_get_nflags(nxi, data);
21891 +
21892 +       case VCMD_set_ncaps:
21893 +               return vc_set_ncaps(nxi, data);
21894 +       case VCMD_get_ncaps:
21895 +               return vc_get_ncaps(nxi, data);
21896 +
21897 +       case VCMD_set_prio_bias:
21898 +               return vc_set_prio_bias(vxi, data);
21899 +       case VCMD_get_prio_bias:
21900 +               return vc_get_prio_bias(vxi, data);
21901 +       case VCMD_add_dlimit:
21902 +               return __COMPAT(vc_add_dlimit, id, data, compat);
21903 +       case VCMD_rem_dlimit:
21904 +               return __COMPAT(vc_rem_dlimit, id, data, compat);
21905 +       case VCMD_set_dlimit:
21906 +               return __COMPAT(vc_set_dlimit, id, data, compat);
21907 +       case VCMD_get_dlimit:
21908 +               return __COMPAT(vc_get_dlimit, id, data, compat);
21909 +
21910 +       case VCMD_ctx_kill:
21911 +               return vc_ctx_kill(vxi, data);
21912 +
21913 +       case VCMD_wait_exit:
21914 +               return vc_wait_exit(vxi, data);
21915 +
21916 +       case VCMD_get_iattr:
21917 +               return __COMPAT_NO_ID(vc_get_iattr, data, compat);
21918 +       case VCMD_set_iattr:
21919 +               return __COMPAT_NO_ID(vc_set_iattr, data, compat);
21920 +
21921 +       case VCMD_fget_iattr:
21922 +               return vc_fget_iattr(id, data);
21923 +       case VCMD_fset_iattr:
21924 +               return vc_fset_iattr(id, data);
21925 +
21926 +       case VCMD_enter_space_v0:
21927 +               return vc_enter_space_v1(vxi, NULL);
21928 +       case VCMD_enter_space_v1:
21929 +               return vc_enter_space_v1(vxi, data);
21930 +       /* this is version 2 */
21931 +       case VCMD_enter_space:
21932 +               return vc_enter_space(vxi, data);
21933 +
21934 +       case VCMD_ctx_create_v0:
21935 +               return vc_ctx_create(id, NULL);
21936 +       case VCMD_ctx_create:
21937 +               return vc_ctx_create(id, data);
21938 +       case VCMD_ctx_migrate_v0:
21939 +               return vc_ctx_migrate(vxi, NULL);
21940 +       case VCMD_ctx_migrate:
21941 +               return vc_ctx_migrate(vxi, data);
21942 +
21943 +       case VCMD_net_create_v0:
21944 +               return vc_net_create(id, NULL);
21945 +       case VCMD_net_create:
21946 +               return vc_net_create(id, data);
21947 +       case VCMD_net_migrate:
21948 +               return vc_net_migrate(nxi, data);
21949 +
21950 +       case VCMD_tag_migrate:
21951 +               return vc_tag_migrate(id);
21952 +
21953 +       case VCMD_net_add:
21954 +               return vc_net_add(nxi, data);
21955 +       case VCMD_net_remove:
21956 +               return vc_net_remove(nxi, data);
21957 +
21958 +       case VCMD_net_add_ipv4_v1:
21959 +               return vc_net_add_ipv4_v1(nxi, data);
21960 +       /* this is version 2 */
21961 +       case VCMD_net_add_ipv4:
21962 +               return vc_net_add_ipv4(nxi, data);
21963 +
21964 +       case VCMD_net_rem_ipv4_v1:
21965 +               return vc_net_rem_ipv4_v1(nxi, data);
21966 +       /* this is version 2 */
21967 +       case VCMD_net_rem_ipv4:
21968 +               return vc_net_rem_ipv4(nxi, data);
21969 +#ifdef CONFIG_IPV6
21970 +       case VCMD_net_add_ipv6:
21971 +               return vc_net_add_ipv6(nxi, data);
21972 +       case VCMD_net_remove_ipv6:
21973 +               return vc_net_remove_ipv6(nxi, data);
21974 +#endif
21975 +/*     case VCMD_add_match_ipv4:
21976 +               return vc_add_match_ipv4(nxi, data);
21977 +       case VCMD_get_match_ipv4:
21978 +               return vc_get_match_ipv4(nxi, data);
21979 +#ifdef CONFIG_IPV6
21980 +       case VCMD_add_match_ipv6:
21981 +               return vc_add_match_ipv6(nxi, data);
21982 +       case VCMD_get_match_ipv6:
21983 +               return vc_get_match_ipv6(nxi, data);
21984 +#endif */
21985 +
21986 +#ifdef CONFIG_VSERVER_DEVICE
21987 +       case VCMD_set_mapping:
21988 +               return __COMPAT(vc_set_mapping, vxi, data, compat);
21989 +       case VCMD_unset_mapping:
21990 +               return __COMPAT(vc_unset_mapping, vxi, data, compat);
21991 +#endif
21992 +#ifdef CONFIG_VSERVER_HISTORY
21993 +       case VCMD_dump_history:
21994 +               return vc_dump_history(id);
21995 +       case VCMD_read_history:
21996 +               return __COMPAT(vc_read_history, id, data, compat);
21997 +#endif
21998 +       default:
21999 +               vxwprintk_task(1, "unimplemented VCMD_%02d_%d[%d]",
22000 +                       VC_CATEGORY(cmd), VC_COMMAND(cmd), VC_VERSION(cmd));
22001 +       }
22002 +       return -ENOSYS;
22003 +}
22004 +
22005 +
22006 +#define        __VCMD(vcmd, _perm, _args, _flags)              \
22007 +       case VCMD_ ## vcmd: perm = _perm;               \
22008 +               args = _args; flags = _flags; break
22009 +
22010 +
22011 +#define VCA_NONE       0x00
22012 +#define VCA_VXI                0x01
22013 +#define VCA_NXI                0x02
22014 +
22015 +#define VCF_NONE       0x00
22016 +#define VCF_INFO       0x01
22017 +#define VCF_ADMIN      0x02
22018 +#define VCF_ARES       0x06    /* includes admin */
22019 +#define VCF_SETUP      0x08
22020 +
22021 +#define VCF_ZIDOK      0x10    /* zero id okay */
22022 +
22023 +
22024 +static inline
22025 +long do_vserver(uint32_t cmd, uint32_t id, void __user *data, int compat)
22026 +{
22027 +       long ret;
22028 +       int permit = -1, state = 0;
22029 +       int perm = -1, args = 0, flags = 0;
22030 +       struct vx_info *vxi = NULL;
22031 +       struct nx_info *nxi = NULL;
22032 +
22033 +       switch (cmd) {
22034 +       /* unpriviledged commands */
22035 +       __VCMD(get_version,      0, VCA_NONE,   0);
22036 +       __VCMD(get_vci,          0, VCA_NONE,   0);
22037 +       __VCMD(get_rlimit_mask,  0, VCA_NONE,   0);
22038 +       __VCMD(get_space_mask_v0,0, VCA_NONE,   0);
22039 +       __VCMD(get_space_mask,   0, VCA_NONE,   0);
22040 +       __VCMD(get_space_default,0, VCA_NONE,   0);
22041 +
22042 +       /* info commands */
22043 +       __VCMD(task_xid,         2, VCA_NONE,   0);
22044 +       __VCMD(reset_hits,       2, VCA_VXI,    0);
22045 +       __VCMD(reset_minmax,     2, VCA_VXI,    0);
22046 +       __VCMD(vx_info,          3, VCA_VXI,    VCF_INFO);
22047 +       __VCMD(get_bcaps,        3, VCA_VXI,    VCF_INFO);
22048 +       __VCMD(get_ccaps,        3, VCA_VXI,    VCF_INFO);
22049 +       __VCMD(get_cflags,       3, VCA_VXI,    VCF_INFO);
22050 +       __VCMD(get_umask,        3, VCA_VXI,    VCF_INFO);
22051 +       __VCMD(get_wmask,        3, VCA_VXI,    VCF_INFO);
22052 +       __VCMD(get_badness,      3, VCA_VXI,    VCF_INFO);
22053 +       __VCMD(get_vhi_name,     3, VCA_VXI,    VCF_INFO);
22054 +       __VCMD(get_rlimit,       3, VCA_VXI,    VCF_INFO);
22055 +
22056 +       __VCMD(ctx_stat,         3, VCA_VXI,    VCF_INFO);
22057 +       __VCMD(virt_stat,        3, VCA_VXI,    VCF_INFO);
22058 +       __VCMD(sock_stat,        3, VCA_VXI,    VCF_INFO);
22059 +       __VCMD(rlimit_stat,      3, VCA_VXI,    VCF_INFO);
22060 +
22061 +       __VCMD(task_nid,         2, VCA_NONE,   0);
22062 +       __VCMD(nx_info,          3, VCA_NXI,    VCF_INFO);
22063 +       __VCMD(get_ncaps,        3, VCA_NXI,    VCF_INFO);
22064 +       __VCMD(get_nflags,       3, VCA_NXI,    VCF_INFO);
22065 +
22066 +       __VCMD(task_tag,         2, VCA_NONE,   0);
22067 +
22068 +       __VCMD(get_iattr,        2, VCA_NONE,   0);
22069 +       __VCMD(fget_iattr,       2, VCA_NONE,   0);
22070 +       __VCMD(get_dlimit,       3, VCA_NONE,   VCF_INFO);
22071 +       __VCMD(get_prio_bias,    3, VCA_VXI,    VCF_INFO);
22072 +
22073 +       /* lower admin commands */
22074 +       __VCMD(wait_exit,        4, VCA_VXI,    VCF_INFO);
22075 +       __VCMD(ctx_create_v0,    5, VCA_NONE,   0);
22076 +       __VCMD(ctx_create,       5, VCA_NONE,   0);
22077 +       __VCMD(ctx_migrate_v0,   5, VCA_VXI,    VCF_ADMIN);
22078 +       __VCMD(ctx_migrate,      5, VCA_VXI,    VCF_ADMIN);
22079 +       __VCMD(enter_space_v0,   5, VCA_VXI,    VCF_ADMIN);
22080 +       __VCMD(enter_space_v1,   5, VCA_VXI,    VCF_ADMIN);
22081 +       __VCMD(enter_space,      5, VCA_VXI,    VCF_ADMIN);
22082 +
22083 +       __VCMD(net_create_v0,    5, VCA_NONE,   0);
22084 +       __VCMD(net_create,       5, VCA_NONE,   0);
22085 +       __VCMD(net_migrate,      5, VCA_NXI,    VCF_ADMIN);
22086 +
22087 +       __VCMD(tag_migrate,      5, VCA_NONE,   VCF_ADMIN);
22088 +
22089 +       /* higher admin commands */
22090 +       __VCMD(ctx_kill,         6, VCA_VXI,    VCF_ARES);
22091 +       __VCMD(set_space_v1,     7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22092 +       __VCMD(set_space,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22093 +
22094 +       __VCMD(set_ccaps,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22095 +       __VCMD(set_bcaps,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22096 +       __VCMD(set_cflags,       7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22097 +       __VCMD(set_umask,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22098 +       __VCMD(set_wmask,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22099 +       __VCMD(set_badness,      7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22100 +
22101 +       __VCMD(set_vhi_name,     7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22102 +       __VCMD(set_rlimit,       7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22103 +       __VCMD(set_prio_bias,    7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22104 +
22105 +       __VCMD(set_ncaps,        7, VCA_NXI,    VCF_ARES | VCF_SETUP);
22106 +       __VCMD(set_nflags,       7, VCA_NXI,    VCF_ARES | VCF_SETUP);
22107 +       __VCMD(net_add,          8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22108 +       __VCMD(net_remove,       8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22109 +       __VCMD(net_add_ipv4_v1,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22110 +       __VCMD(net_rem_ipv4_v1,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22111 +       __VCMD(net_add_ipv4,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22112 +       __VCMD(net_rem_ipv4,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22113 +#ifdef CONFIG_IPV6
22114 +       __VCMD(net_add_ipv6,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22115 +       __VCMD(net_remove_ipv6,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22116 +#endif
22117 +       __VCMD(set_iattr,        7, VCA_NONE,   0);
22118 +       __VCMD(fset_iattr,       7, VCA_NONE,   0);
22119 +       __VCMD(set_dlimit,       7, VCA_NONE,   VCF_ARES);
22120 +       __VCMD(add_dlimit,       8, VCA_NONE,   VCF_ARES);
22121 +       __VCMD(rem_dlimit,       8, VCA_NONE,   VCF_ARES);
22122 +
22123 +#ifdef CONFIG_VSERVER_DEVICE
22124 +       __VCMD(set_mapping,      8, VCA_VXI,    VCF_ARES|VCF_ZIDOK);
22125 +       __VCMD(unset_mapping,    8, VCA_VXI,    VCF_ARES|VCF_ZIDOK);
22126 +#endif
22127 +       /* debug level admin commands */
22128 +#ifdef CONFIG_VSERVER_HISTORY
22129 +       __VCMD(dump_history,     9, VCA_NONE,   0);
22130 +       __VCMD(read_history,     9, VCA_NONE,   0);
22131 +#endif
22132 +
22133 +       default:
22134 +               perm = -1;
22135 +       }
22136 +
22137 +       vxdprintk(VXD_CBIT(switch, 0),
22138 +               "vc: VCMD_%02d_%d[%d], %d,%p [%d,%d,%x,%x]",
22139 +               VC_CATEGORY(cmd), VC_COMMAND(cmd),
22140 +               VC_VERSION(cmd), id, data, compat,
22141 +               perm, args, flags);
22142 +
22143 +       ret = -ENOSYS;
22144 +       if (perm < 0)
22145 +               goto out;
22146 +
22147 +       state = 1;
22148 +       if (!capable(CAP_CONTEXT))
22149 +               goto out;
22150 +
22151 +       state = 2;
22152 +       /* moved here from the individual commands */
22153 +       ret = -EPERM;
22154 +       if ((perm > 1) && !capable(CAP_SYS_ADMIN))
22155 +               goto out;
22156 +
22157 +       state = 3;
22158 +       /* vcmd involves resource management  */
22159 +       ret = -EPERM;
22160 +       if ((flags & VCF_ARES) && !capable(CAP_SYS_RESOURCE))
22161 +               goto out;
22162 +
22163 +       state = 4;
22164 +       /* various legacy exceptions */
22165 +       switch (cmd) {
22166 +       /* will go away when spectator is a cap */
22167 +       case VCMD_ctx_migrate_v0:
22168 +       case VCMD_ctx_migrate:
22169 +               if (id == 1) {
22170 +                       current->xid = 1;
22171 +                       ret = 1;
22172 +                       goto out;
22173 +               }
22174 +               break;
22175 +
22176 +       /* will go away when spectator is a cap */
22177 +       case VCMD_net_migrate:
22178 +               if (id == 1) {
22179 +                       current->nid = 1;
22180 +                       ret = 1;
22181 +                       goto out;
22182 +               }
22183 +               break;
22184 +       }
22185 +
22186 +       /* vcmds are fine by default */
22187 +       permit = 1;
22188 +
22189 +       /* admin type vcmds require admin ... */
22190 +       if (flags & VCF_ADMIN)
22191 +               permit = vx_check(0, VS_ADMIN) ? 1 : 0;
22192 +
22193 +       /* ... but setup type vcmds override that */
22194 +       if (!permit && (flags & VCF_SETUP))
22195 +               permit = vx_flags(VXF_STATE_SETUP, 0) ? 2 : 0;
22196 +
22197 +       state = 5;
22198 +       ret = -EPERM;
22199 +       if (!permit)
22200 +               goto out;
22201 +
22202 +       state = 6;
22203 +       if (!id && (flags & VCF_ZIDOK))
22204 +               goto skip_id;
22205 +
22206 +       ret = -ESRCH;
22207 +       if (args & VCA_VXI) {
22208 +               vxi = lookup_vx_info(id);
22209 +               if (!vxi)
22210 +                       goto out;
22211 +
22212 +               if ((flags & VCF_ADMIN) &&
22213 +                       /* special case kill for shutdown */
22214 +                       (cmd != VCMD_ctx_kill) &&
22215 +                       /* can context be administrated? */
22216 +                       !vx_info_flags(vxi, VXF_STATE_ADMIN, 0)) {
22217 +                       ret = -EACCES;
22218 +                       goto out_vxi;
22219 +               }
22220 +       }
22221 +       state = 7;
22222 +       if (args & VCA_NXI) {
22223 +               nxi = lookup_nx_info(id);
22224 +               if (!nxi)
22225 +                       goto out_vxi;
22226 +
22227 +               if ((flags & VCF_ADMIN) &&
22228 +                       /* can context be administrated? */
22229 +                       !nx_info_flags(nxi, NXF_STATE_ADMIN, 0)) {
22230 +                       ret = -EACCES;
22231 +                       goto out_nxi;
22232 +               }
22233 +       }
22234 +skip_id:
22235 +       state = 8;
22236 +       ret = do_vcmd(cmd, id, vxi, nxi, data, compat);
22237 +
22238 +out_nxi:
22239 +       if ((args & VCA_NXI) && nxi)
22240 +               put_nx_info(nxi);
22241 +out_vxi:
22242 +       if ((args & VCA_VXI) && vxi)
22243 +               put_vx_info(vxi);
22244 +out:
22245 +       vxdprintk(VXD_CBIT(switch, 1),
22246 +               "vc: VCMD_%02d_%d[%d] = %08lx(%ld) [%d,%d]",
22247 +               VC_CATEGORY(cmd), VC_COMMAND(cmd),
22248 +               VC_VERSION(cmd), ret, ret, state, permit);
22249 +       return ret;
22250 +}
22251 +
22252 +asmlinkage long
22253 +sys_vserver(uint32_t cmd, uint32_t id, void __user *data)
22254 +{
22255 +       return do_vserver(cmd, id, data, 0);
22256 +}
22257 +
22258 +#ifdef CONFIG_COMPAT
22259 +
22260 +asmlinkage long
22261 +sys32_vserver(uint32_t cmd, uint32_t id, void __user *data)
22262 +{
22263 +       return do_vserver(cmd, id, data, 1);
22264 +}
22265 +
22266 +#endif /* CONFIG_COMPAT */
22267 diff -NurpP --minimal linux-4.4.111/kernel/vserver/sysctl.c linux-4.4.111-vs2.3.9.5/kernel/vserver/sysctl.c
22268 --- linux-4.4.111/kernel/vserver/sysctl.c       1970-01-01 00:00:00.000000000 +0000
22269 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/sysctl.c     2018-01-09 16:36:34.000000000 +0000
22270 @@ -0,0 +1,247 @@
22271 +/*
22272 + *  kernel/vserver/sysctl.c
22273 + *
22274 + *  Virtual Context Support
22275 + *
22276 + *  Copyright (C) 2004-2007  Herbert P?tzl
22277 + *
22278 + *  V0.01  basic structure
22279 + *
22280 + */
22281 +
22282 +#include <linux/module.h>
22283 +#include <linux/ctype.h>
22284 +#include <linux/sysctl.h>
22285 +#include <linux/parser.h>
22286 +#include <asm/uaccess.h>
22287 +
22288 +enum {
22289 +       CTL_DEBUG_ERROR         = 0,
22290 +       CTL_DEBUG_SWITCH        = 1,
22291 +       CTL_DEBUG_XID,
22292 +       CTL_DEBUG_NID,
22293 +       CTL_DEBUG_TAG,
22294 +       CTL_DEBUG_NET,
22295 +       CTL_DEBUG_LIMIT,
22296 +       CTL_DEBUG_CRES,
22297 +       CTL_DEBUG_DLIM,
22298 +       CTL_DEBUG_QUOTA,
22299 +       CTL_DEBUG_CVIRT,
22300 +       CTL_DEBUG_SPACE,
22301 +       CTL_DEBUG_PERM,
22302 +       CTL_DEBUG_MISC,
22303 +};
22304 +
22305 +
22306 +unsigned int vs_debug_switch   = 0;
22307 +unsigned int vs_debug_xid      = 0;
22308 +unsigned int vs_debug_nid      = 0;
22309 +unsigned int vs_debug_tag      = 0;
22310 +unsigned int vs_debug_net      = 0;
22311 +unsigned int vs_debug_limit    = 0;
22312 +unsigned int vs_debug_cres     = 0;
22313 +unsigned int vs_debug_dlim     = 0;
22314 +unsigned int vs_debug_quota    = 0;
22315 +unsigned int vs_debug_cvirt    = 0;
22316 +unsigned int vs_debug_space    = 0;
22317 +unsigned int vs_debug_perm     = 0;
22318 +unsigned int vs_debug_misc     = 0;
22319 +
22320 +
22321 +static struct ctl_table_header *vserver_table_header;
22322 +static struct ctl_table vserver_root_table[];
22323 +
22324 +
22325 +void vserver_register_sysctl(void)
22326 +{
22327 +       if (!vserver_table_header) {
22328 +               vserver_table_header = register_sysctl_table(vserver_root_table);
22329 +       }
22330 +
22331 +}
22332 +
22333 +void vserver_unregister_sysctl(void)
22334 +{
22335 +       if (vserver_table_header) {
22336 +               unregister_sysctl_table(vserver_table_header);
22337 +               vserver_table_header = NULL;
22338 +       }
22339 +}
22340 +
22341 +
22342 +static int proc_dodebug(struct ctl_table *table, int write,
22343 +       void __user *buffer, size_t *lenp, loff_t *ppos)
22344 +{
22345 +       char            tmpbuf[20], *p, c;
22346 +       unsigned int    value;
22347 +       size_t          left, len;
22348 +
22349 +       if ((*ppos && !write) || !*lenp) {
22350 +               *lenp = 0;
22351 +               return 0;
22352 +       }
22353 +
22354 +       left = *lenp;
22355 +
22356 +       if (write) {
22357 +               if (!access_ok(VERIFY_READ, buffer, left))
22358 +                       return -EFAULT;
22359 +               p = (char *)buffer;
22360 +               while (left && __get_user(c, p) >= 0 && isspace(c))
22361 +                       left--, p++;
22362 +               if (!left)
22363 +                       goto done;
22364 +
22365 +               if (left > sizeof(tmpbuf) - 1)
22366 +                       return -EINVAL;
22367 +               if (copy_from_user(tmpbuf, p, left))
22368 +                       return -EFAULT;
22369 +               tmpbuf[left] = '\0';
22370 +
22371 +               for (p = tmpbuf, value = 0; '0' <= *p && *p <= '9'; p++, left--)
22372 +                       value = 10 * value + (*p - '0');
22373 +               if (*p && !isspace(*p))
22374 +                       return -EINVAL;
22375 +               while (left && isspace(*p))
22376 +                       left--, p++;
22377 +               *(unsigned int *)table->data = value;
22378 +       } else {
22379 +               if (!access_ok(VERIFY_WRITE, buffer, left))
22380 +                       return -EFAULT;
22381 +               len = sprintf(tmpbuf, "%d", *(unsigned int *)table->data);
22382 +               if (len > left)
22383 +                       len = left;
22384 +               if (__copy_to_user(buffer, tmpbuf, len))
22385 +                       return -EFAULT;
22386 +               if ((left -= len) > 0) {
22387 +                       if (put_user('\n', (char *)buffer + len))
22388 +                               return -EFAULT;
22389 +                       left--;
22390 +               }
22391 +       }
22392 +
22393 +done:
22394 +       *lenp -= left;
22395 +       *ppos += *lenp;
22396 +       return 0;
22397 +}
22398 +
22399 +static int zero;
22400 +
22401 +#define        CTL_ENTRY(ctl, name)                            \
22402 +       {                                               \
22403 +               .procname       = #name,                \
22404 +               .data           = &vs_ ## name,         \
22405 +               .maxlen         = sizeof(int),          \
22406 +               .mode           = 0644,                 \
22407 +               .proc_handler   = &proc_dodebug,        \
22408 +               .extra1         = &zero,                \
22409 +               .extra2         = &zero,                \
22410 +       }
22411 +
22412 +static struct ctl_table vserver_debug_table[] = {
22413 +       CTL_ENTRY(CTL_DEBUG_SWITCH,     debug_switch),
22414 +       CTL_ENTRY(CTL_DEBUG_XID,        debug_xid),
22415 +       CTL_ENTRY(CTL_DEBUG_NID,        debug_nid),
22416 +       CTL_ENTRY(CTL_DEBUG_TAG,        debug_tag),
22417 +       CTL_ENTRY(CTL_DEBUG_NET,        debug_net),
22418 +       CTL_ENTRY(CTL_DEBUG_LIMIT,      debug_limit),
22419 +       CTL_ENTRY(CTL_DEBUG_CRES,       debug_cres),
22420 +       CTL_ENTRY(CTL_DEBUG_DLIM,       debug_dlim),
22421 +       CTL_ENTRY(CTL_DEBUG_QUOTA,      debug_quota),
22422 +       CTL_ENTRY(CTL_DEBUG_CVIRT,      debug_cvirt),
22423 +       CTL_ENTRY(CTL_DEBUG_SPACE,      debug_space),
22424 +       CTL_ENTRY(CTL_DEBUG_PERM,       debug_perm),
22425 +       CTL_ENTRY(CTL_DEBUG_MISC,       debug_misc),
22426 +       { 0 }
22427 +};
22428 +
22429 +static struct ctl_table vserver_root_table[] = {
22430 +       {
22431 +               .procname       = "vserver",
22432 +               .mode           = 0555,
22433 +               .child          = vserver_debug_table
22434 +       },
22435 +       { 0 }
22436 +};
22437 +
22438 +
22439 +static match_table_t tokens = {
22440 +       { CTL_DEBUG_SWITCH,     "switch=%x"     },
22441 +       { CTL_DEBUG_XID,        "xid=%x"        },
22442 +       { CTL_DEBUG_NID,        "nid=%x"        },
22443 +       { CTL_DEBUG_TAG,        "tag=%x"        },
22444 +       { CTL_DEBUG_NET,        "net=%x"        },
22445 +       { CTL_DEBUG_LIMIT,      "limit=%x"      },
22446 +       { CTL_DEBUG_CRES,       "cres=%x"       },
22447 +       { CTL_DEBUG_DLIM,       "dlim=%x"       },
22448 +       { CTL_DEBUG_QUOTA,      "quota=%x"      },
22449 +       { CTL_DEBUG_CVIRT,      "cvirt=%x"      },
22450 +       { CTL_DEBUG_SPACE,      "space=%x"      },
22451 +       { CTL_DEBUG_PERM,       "perm=%x"       },
22452 +       { CTL_DEBUG_MISC,       "misc=%x"       },
22453 +       { CTL_DEBUG_ERROR,      NULL            }
22454 +};
22455 +
22456 +#define        HANDLE_CASE(id, name, val)                              \
22457 +       case CTL_DEBUG_ ## id:                                  \
22458 +               vs_debug_ ## name = val;                        \
22459 +               printk("vs_debug_" #name "=0x%x\n", val);       \
22460 +               break
22461 +
22462 +
22463 +static int __init vs_debug_setup(char *str)
22464 +{
22465 +       char *p;
22466 +       int token;
22467 +
22468 +       printk("vs_debug_setup(%s)\n", str);
22469 +       while ((p = strsep(&str, ",")) != NULL) {
22470 +               substring_t args[MAX_OPT_ARGS];
22471 +               unsigned int value;
22472 +
22473 +               if (!*p)
22474 +                       continue;
22475 +
22476 +               token = match_token(p, tokens, args);
22477 +               value = (token > 0) ? simple_strtoul(args[0].from, NULL, 0) : 0;
22478 +
22479 +               switch (token) {
22480 +               HANDLE_CASE(SWITCH, switch, value);
22481 +               HANDLE_CASE(XID,    xid,    value);
22482 +               HANDLE_CASE(NID,    nid,    value);
22483 +               HANDLE_CASE(TAG,    tag,    value);
22484 +               HANDLE_CASE(NET,    net,    value);
22485 +               HANDLE_CASE(LIMIT,  limit,  value);
22486 +               HANDLE_CASE(CRES,   cres,   value);
22487 +               HANDLE_CASE(DLIM,   dlim,   value);
22488 +               HANDLE_CASE(QUOTA,  quota,  value);
22489 +               HANDLE_CASE(CVIRT,  cvirt,  value);
22490 +               HANDLE_CASE(SPACE,  space,  value);
22491 +               HANDLE_CASE(PERM,   perm,   value);
22492 +               HANDLE_CASE(MISC,   misc,   value);
22493 +               default:
22494 +                       return -EINVAL;
22495 +                       break;
22496 +               }
22497 +       }
22498 +       return 1;
22499 +}
22500 +
22501 +__setup("vsdebug=", vs_debug_setup);
22502 +
22503 +
22504 +
22505 +EXPORT_SYMBOL_GPL(vs_debug_switch);
22506 +EXPORT_SYMBOL_GPL(vs_debug_xid);
22507 +EXPORT_SYMBOL_GPL(vs_debug_nid);
22508 +EXPORT_SYMBOL_GPL(vs_debug_net);
22509 +EXPORT_SYMBOL_GPL(vs_debug_limit);
22510 +EXPORT_SYMBOL_GPL(vs_debug_cres);
22511 +EXPORT_SYMBOL_GPL(vs_debug_dlim);
22512 +EXPORT_SYMBOL_GPL(vs_debug_quota);
22513 +EXPORT_SYMBOL_GPL(vs_debug_cvirt);
22514 +EXPORT_SYMBOL_GPL(vs_debug_space);
22515 +EXPORT_SYMBOL_GPL(vs_debug_perm);
22516 +EXPORT_SYMBOL_GPL(vs_debug_misc);
22517 +
22518 diff -NurpP --minimal linux-4.4.111/kernel/vserver/tag.c linux-4.4.111-vs2.3.9.5/kernel/vserver/tag.c
22519 --- linux-4.4.111/kernel/vserver/tag.c  1970-01-01 00:00:00.000000000 +0000
22520 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/tag.c        2018-01-09 16:36:34.000000000 +0000
22521 @@ -0,0 +1,63 @@
22522 +/*
22523 + *  linux/kernel/vserver/tag.c
22524 + *
22525 + *  Virtual Server: Shallow Tag Space
22526 + *
22527 + *  Copyright (C) 2007  Herbert P?tzl
22528 + *
22529 + *  V0.01  basic implementation
22530 + *
22531 + */
22532 +
22533 +#include <linux/sched.h>
22534 +#include <linux/vserver/debug.h>
22535 +#include <linux/vs_pid.h>
22536 +#include <linux/vs_tag.h>
22537 +
22538 +#include <linux/vserver/tag_cmd.h>
22539 +
22540 +
22541 +int dx_migrate_task(struct task_struct *p, vtag_t tag)
22542 +{
22543 +       if (!p)
22544 +               BUG();
22545 +
22546 +       vxdprintk(VXD_CBIT(tag, 5),
22547 +               "dx_migrate_task(%p[#%d],#%d)", p, p->tag, tag);
22548 +
22549 +       task_lock(p);
22550 +       p->tag = tag;
22551 +       task_unlock(p);
22552 +
22553 +       vxdprintk(VXD_CBIT(tag, 5),
22554 +               "moved task %p into [#%d]", p, tag);
22555 +       return 0;
22556 +}
22557 +
22558 +/* vserver syscall commands below here */
22559 +
22560 +/* taks xid and vx_info functions */
22561 +
22562 +
22563 +int vc_task_tag(uint32_t id)
22564 +{
22565 +       vtag_t tag;
22566 +
22567 +       if (id) {
22568 +               struct task_struct *tsk;
22569 +               rcu_read_lock();
22570 +               tsk = find_task_by_real_pid(id);
22571 +               tag = (tsk) ? tsk->tag : -ESRCH;
22572 +               rcu_read_unlock();
22573 +       } else
22574 +               tag = dx_current_tag();
22575 +       return tag;
22576 +}
22577 +
22578 +
22579 +int vc_tag_migrate(uint32_t tag)
22580 +{
22581 +       return dx_migrate_task(current, tag & 0xFFFF);
22582 +}
22583 +
22584 +
22585 diff -NurpP --minimal linux-4.4.111/kernel/vserver/vci_config.h linux-4.4.111-vs2.3.9.5/kernel/vserver/vci_config.h
22586 --- linux-4.4.111/kernel/vserver/vci_config.h   1970-01-01 00:00:00.000000000 +0000
22587 +++ linux-4.4.111-vs2.3.9.5/kernel/vserver/vci_config.h 2018-01-09 16:36:34.000000000 +0000
22588 @@ -0,0 +1,80 @@
22589 +
22590 +/*  interface version */
22591 +
22592 +#define VCI_VERSION            0x00020308
22593 +
22594 +
22595 +enum {
22596 +       VCI_KCBIT_NO_DYNAMIC = 0,
22597 +
22598 +       VCI_KCBIT_PROC_SECURE = 4,
22599 +       /* VCI_KCBIT_HARDCPU = 5, */
22600 +       /* VCI_KCBIT_IDLELIMIT = 6, */
22601 +       /* VCI_KCBIT_IDLETIME = 7, */
22602 +
22603 +       VCI_KCBIT_COWBL = 8,
22604 +       VCI_KCBIT_FULLCOWBL = 9,
22605 +       VCI_KCBIT_SPACES = 10,
22606 +       VCI_KCBIT_NETV2 = 11,
22607 +       VCI_KCBIT_MEMCG = 12,
22608 +       VCI_KCBIT_MEMCG_SWAP = 13,
22609 +
22610 +       VCI_KCBIT_DEBUG = 16,
22611 +       VCI_KCBIT_HISTORY = 20,
22612 +       VCI_KCBIT_TAGGED = 24,
22613 +       VCI_KCBIT_PPTAG = 28,
22614 +
22615 +       VCI_KCBIT_MORE = 31,
22616 +};
22617 +
22618 +
22619 +static inline uint32_t vci_kernel_config(void)
22620 +{
22621 +       return
22622 +       (1 << VCI_KCBIT_NO_DYNAMIC) |
22623 +
22624 +       /* configured features */
22625 +#ifdef CONFIG_VSERVER_PROC_SECURE
22626 +       (1 << VCI_KCBIT_PROC_SECURE) |
22627 +#endif
22628 +#ifdef CONFIG_VSERVER_COWBL
22629 +       (1 << VCI_KCBIT_COWBL) |
22630 +       (1 << VCI_KCBIT_FULLCOWBL) |
22631 +#endif
22632 +       (1 << VCI_KCBIT_SPACES) |
22633 +       (1 << VCI_KCBIT_NETV2) |
22634 +#ifdef CONFIG_MEMCG
22635 +       (1 << VCI_KCBIT_MEMCG) |
22636 +#endif
22637 +#ifdef CONFIG_MEMCG_SWAP
22638 +       (1 << VCI_KCBIT_MEMCG_SWAP) |
22639 +#endif
22640 +
22641 +       /* debug options */
22642 +#ifdef CONFIG_VSERVER_DEBUG
22643 +       (1 << VCI_KCBIT_DEBUG) |
22644 +#endif
22645 +#ifdef CONFIG_VSERVER_HISTORY
22646 +       (1 << VCI_KCBIT_HISTORY) |
22647 +#endif
22648 +
22649 +       /* inode context tagging */
22650 +#if    defined(CONFIG_TAGGING_NONE)
22651 +       (0 << VCI_KCBIT_TAGGED) |
22652 +#elif  defined(CONFIG_TAGGING_UID16)
22653 +       (1 << VCI_KCBIT_TAGGED) |
22654 +#elif  defined(CONFIG_TAGGING_GID16)
22655 +       (2 << VCI_KCBIT_TAGGED) |
22656 +#elif  defined(CONFIG_TAGGING_ID24)
22657 +       (3 << VCI_KCBIT_TAGGED) |
22658 +#elif  defined(CONFIG_TAGGING_INTERN)
22659 +       (4 << VCI_KCBIT_TAGGED) |
22660 +#elif  defined(CONFIG_TAGGING_RUNTIME)
22661 +       (5 << VCI_KCBIT_TAGGED) |
22662 +#else
22663 +       (7 << VCI_KCBIT_TAGGED) |
22664 +#endif
22665 +       (1 << VCI_KCBIT_PPTAG) |
22666 +       0;
22667 +}
22668 +
22669 diff -NurpP --minimal linux-4.4.111/mm/memcontrol.c linux-4.4.111-vs2.3.9.5/mm/memcontrol.c
22670 --- linux-4.4.111/mm/memcontrol.c       2018-01-11 07:57:53.000000000 +0000
22671 +++ linux-4.4.111-vs2.3.9.5/mm/memcontrol.c     2018-01-09 16:36:34.000000000 +0000
22672 @@ -2888,6 +2888,28 @@ static u64 mem_cgroup_read_u64(struct cg
22673         }
22674  }
22675
22676 +u64 mem_cgroup_mem_usage_pages(struct mem_cgroup *memcg)
22677 +{
22678 +       return mem_cgroup_usage(memcg, false) >> PAGE_SHIFT;
22679 +}
22680 +
22681 +u64 mem_cgroup_mem_limit_pages(struct mem_cgroup *memcg)
22682 +{
22683 +       return (u64)memcg->memory.limit;
22684 +}
22685 +
22686 +u64 mem_cgroup_memsw_usage_pages(struct mem_cgroup *memcg)
22687 +{
22688 +       return mem_cgroup_usage(memcg, true) >> PAGE_SHIFT;
22689 +}
22690 +
22691 +u64 mem_cgroup_memsw_limit_pages(struct mem_cgroup *memcg)
22692 +{
22693 +       return (u64)memcg->memsw.limit;
22694 +}
22695 +
22696 +
22697 +
22698  #ifdef CONFIG_MEMCG_KMEM
22699  static int memcg_activate_kmem(struct mem_cgroup *memcg,
22700                                unsigned long nr_pages)
22701 diff -NurpP --minimal linux-4.4.111/mm/oom_kill.c linux-4.4.111-vs2.3.9.5/mm/oom_kill.c
22702 --- linux-4.4.111/mm/oom_kill.c 2016-07-05 04:15:13.000000000 +0000
22703 +++ linux-4.4.111-vs2.3.9.5/mm/oom_kill.c       2018-01-09 16:56:23.000000000 +0000
22704 @@ -35,6 +35,8 @@
22705  #include <linux/freezer.h>
22706  #include <linux/ftrace.h>
22707  #include <linux/ratelimit.h>
22708 +#include <linux/reboot.h>
22709 +#include <linux/vs_context.h>
22710
22711  #define CREATE_TRACE_POINTS
22712  #include <trace/events/oom.h>
22713 @@ -131,11 +133,18 @@ static inline bool is_sysrq_oom(struct o
22714  static bool oom_unkillable_task(struct task_struct *p,
22715                 struct mem_cgroup *memcg, const nodemask_t *nodemask)
22716  {
22717 -       if (is_global_init(p))
22718 +       unsigned xid = vx_current_xid();
22719 +
22720 +       /* skip the init task, global and per guest */
22721 +       if (task_is_init(p))
22722                 return true;
22723         if (p->flags & PF_KTHREAD)
22724                 return true;
22725
22726 +       /* skip other guest and host processes if oom in guest */
22727 +       if (xid && vx_task_xid(p) != xid)
22728 +               return true;
22729 +
22730         /* When mem_cgroup_out_of_memory() and p is not member of the group */
22731         if (memcg && !task_in_mem_cgroup(p, memcg))
22732                 return true;
22733 @@ -534,8 +543,8 @@ void oom_kill_process(struct oom_control
22734         if (__ratelimit(&oom_rs))
22735                 dump_header(oc, p, memcg);
22736
22737 -       pr_err("%s: Kill process %d (%s) score %u or sacrifice child\n",
22738 -               message, task_pid_nr(p), p->comm, points);
22739 +       pr_err("%s: Kill process %d:#%u (%s) score %d or sacrifice child\n",
22740 +               message, task_pid_nr(p), p->xid, p->comm, points);
22741
22742         /*
22743          * If any of p's children has a different mm and is eligible for kill,
22744 @@ -585,8 +594,8 @@ void oom_kill_process(struct oom_control
22745          */
22746         do_send_sig_info(SIGKILL, SEND_SIG_FORCED, victim, true);
22747         mark_oom_victim(victim);
22748 -       pr_err("Killed process %d (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB\n",
22749 -               task_pid_nr(victim), victim->comm, K(victim->mm->total_vm),
22750 +       pr_err("Killed process %d:%u (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB\n",
22751 +               task_pid_nr(victim), victim->xid, victim->comm, K(victim->mm->total_vm),
22752                 K(get_mm_counter(victim->mm, MM_ANONPAGES)),
22753                 K(get_mm_counter(victim->mm, MM_FILEPAGES)));
22754         task_unlock(victim);
22755 @@ -622,6 +631,8 @@ void oom_kill_process(struct oom_control
22756  }
22757  #undef K
22758
22759 +long vs_oom_action(unsigned int);
22760 +
22761  /*
22762   * Determines whether the kernel must panic because of the panic_on_oom sysctl.
22763   */
22764 @@ -722,7 +733,12 @@ bool out_of_memory(struct oom_control *o
22765         /* Found nothing?!?! Either we hang forever, or we panic. */
22766         if (!p && !is_sysrq_oom(oc)) {
22767                 dump_header(oc, NULL, NULL);
22768 -               panic("Out of memory and no killable processes...\n");
22769 +
22770 +               /* avoid panic for guest OOM */
22771 +               if (vx_current_xid())
22772 +                       vs_oom_action(LINUX_REBOOT_CMD_OOM);
22773 +               else
22774 +                       panic("Out of memory and no killable processes...\n");
22775         }
22776         if (p && p != (void *)-1UL) {
22777                 oom_kill_process(oc, p, points, totalpages, NULL,
22778 diff -NurpP --minimal linux-4.4.111/mm/page_alloc.c linux-4.4.111-vs2.3.9.5/mm/page_alloc.c
22779 --- linux-4.4.111/mm/page_alloc.c       2018-01-11 07:57:53.000000000 +0000
22780 +++ linux-4.4.111-vs2.3.9.5/mm/page_alloc.c     2018-01-09 16:57:52.000000000 +0000
22781 @@ -62,6 +62,8 @@
22782  #include <linux/sched/rt.h>
22783  #include <linux/page_owner.h>
22784  #include <linux/kthread.h>
22785 +#include <linux/vs_base.h>
22786 +#include <linux/vs_limit.h>
22787
22788  #include <asm/sections.h>
22789  #include <asm/tlbflush.h>
22790 @@ -3661,6 +3663,9 @@ void si_meminfo(struct sysinfo *val)
22791         val->totalhigh = totalhigh_pages;
22792         val->freehigh = nr_free_highpages();
22793         val->mem_unit = PAGE_SIZE;
22794 +
22795 +       if (vx_flags(VXF_VIRT_MEM, 0))
22796 +               vx_vsi_meminfo(val);
22797  }
22798
22799  EXPORT_SYMBOL(si_meminfo);
22800 @@ -3686,6 +3691,9 @@ void si_meminfo_node(struct sysinfo *val
22801         val->freehigh = 0;
22802  #endif
22803         val->mem_unit = PAGE_SIZE;
22804 +
22805 +       if (vx_flags(VXF_VIRT_MEM, 0))
22806 +               vx_vsi_meminfo(val);
22807  }
22808  #endif
22809
22810 diff -NurpP --minimal linux-4.4.111/mm/pgtable-generic.c linux-4.4.111-vs2.3.9.5/mm/pgtable-generic.c
22811 --- linux-4.4.111/mm/pgtable-generic.c  2018-01-11 07:57:53.000000000 +0000
22812 +++ linux-4.4.111-vs2.3.9.5/mm/pgtable-generic.c        2018-01-09 16:36:34.000000000 +0000
22813 @@ -6,6 +6,8 @@
22814   *  Copyright (C) 2010  Linus Torvalds
22815   */
22816
22817 +#include <linux/mm.h>
22818 +
22819  #include <linux/pagemap.h>
22820  #include <asm/tlb.h>
22821  #include <asm-generic/pgtable.h>
22822 diff -NurpP --minimal linux-4.4.111/mm/shmem.c linux-4.4.111-vs2.3.9.5/mm/shmem.c
22823 --- linux-4.4.111/mm/shmem.c    2018-01-11 07:57:53.000000000 +0000
22824 +++ linux-4.4.111-vs2.3.9.5/mm/shmem.c  2018-01-09 16:36:34.000000000 +0000
22825 @@ -2198,7 +2198,7 @@ static int shmem_statfs(struct dentry *d
22826  {
22827         struct shmem_sb_info *sbinfo = SHMEM_SB(dentry->d_sb);
22828
22829 -       buf->f_type = TMPFS_MAGIC;
22830 +       buf->f_type = TMPFS_SUPER_MAGIC;
22831         buf->f_bsize = PAGE_CACHE_SIZE;
22832         buf->f_namelen = NAME_MAX;
22833         if (sbinfo->max_blocks) {
22834 @@ -3044,7 +3044,7 @@ int shmem_fill_super(struct super_block
22835         sb->s_maxbytes = MAX_LFS_FILESIZE;
22836         sb->s_blocksize = PAGE_CACHE_SIZE;
22837         sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
22838 -       sb->s_magic = TMPFS_MAGIC;
22839 +       sb->s_magic = TMPFS_SUPER_MAGIC;
22840         sb->s_op = &shmem_ops;
22841         sb->s_time_gran = 1;
22842  #ifdef CONFIG_TMPFS_XATTR
22843 diff -NurpP --minimal linux-4.4.111/mm/slab.c linux-4.4.111-vs2.3.9.5/mm/slab.c
22844 --- linux-4.4.111/mm/slab.c     2016-07-05 04:15:13.000000000 +0000
22845 +++ linux-4.4.111-vs2.3.9.5/mm/slab.c   2018-01-09 16:36:34.000000000 +0000
22846 @@ -337,6 +337,8 @@ static void kmem_cache_node_init(struct
22847  #define STATS_INC_FREEMISS(x)  do { } while (0)
22848  #endif
22849
22850 +#include "slab_vs.h"
22851 +
22852  #if DEBUG
22853
22854  /*
22855 @@ -3183,6 +3185,7 @@ slab_alloc_node(struct kmem_cache *cache
22856         /* ___cache_alloc_node can fall back to other nodes */
22857         ptr = ____cache_alloc_node(cachep, flags, nodeid);
22858    out:
22859 +       vx_slab_alloc(cachep, flags);
22860         local_irq_restore(save_flags);
22861         ptr = cache_alloc_debugcheck_after(cachep, flags, ptr, caller);
22862         kmemleak_alloc_recursive(ptr, cachep->object_size, 1, cachep->flags,
22863 @@ -3371,6 +3374,7 @@ static inline void __cache_free(struct k
22864         check_irq_off();
22865         kmemleak_free_recursive(objp, cachep->flags);
22866         objp = cache_free_debugcheck(cachep, objp, caller);
22867 +       vx_slab_free(cachep);
22868
22869         kmemcheck_slab_free(cachep, objp, cachep->object_size);
22870
22871 diff -NurpP --minimal linux-4.4.111/mm/slab_vs.h linux-4.4.111-vs2.3.9.5/mm/slab_vs.h
22872 --- linux-4.4.111/mm/slab_vs.h  1970-01-01 00:00:00.000000000 +0000
22873 +++ linux-4.4.111-vs2.3.9.5/mm/slab_vs.h        2018-01-09 16:36:34.000000000 +0000
22874 @@ -0,0 +1,29 @@
22875 +
22876 +#include <linux/vserver/context.h>
22877 +
22878 +#include <linux/vs_context.h>
22879 +
22880 +static inline
22881 +void vx_slab_alloc(struct kmem_cache *cachep, gfp_t flags)
22882 +{
22883 +       int what = gfp_zone(cachep->allocflags);
22884 +       struct vx_info *vxi = current_vx_info();
22885 +
22886 +       if (!vxi)
22887 +               return;
22888 +
22889 +       atomic_add(cachep->size, &vxi->cacct.slab[what]);
22890 +}
22891 +
22892 +static inline
22893 +void vx_slab_free(struct kmem_cache *cachep)
22894 +{
22895 +       int what = gfp_zone(cachep->allocflags);
22896 +       struct vx_info *vxi = current_vx_info();
22897 +
22898 +       if (!vxi)
22899 +               return;
22900 +
22901 +       atomic_sub(cachep->size, &vxi->cacct.slab[what]);
22902 +}
22903 +
22904 diff -NurpP --minimal linux-4.4.111/mm/swapfile.c linux-4.4.111-vs2.3.9.5/mm/swapfile.c
22905 --- linux-4.4.111/mm/swapfile.c 2018-01-11 07:57:53.000000000 +0000
22906 +++ linux-4.4.111-vs2.3.9.5/mm/swapfile.c       2018-01-09 16:36:34.000000000 +0000
22907 @@ -39,6 +39,7 @@
22908  #include <asm/tlbflush.h>
22909  #include <linux/swapops.h>
22910  #include <linux/swap_cgroup.h>
22911 +#include <linux/vs_base.h>
22912
22913  static bool swap_count_continued(struct swap_info_struct *, pgoff_t,
22914                                  unsigned char);
22915 @@ -2070,6 +2071,16 @@ static int swap_show(struct seq_file *sw
22916
22917         if (si == SEQ_START_TOKEN) {
22918                 seq_puts(swap,"Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n");
22919 +               if (vx_flags(VXF_VIRT_MEM, 0)) {
22920 +                       struct sysinfo si = { 0 };
22921 +
22922 +                       vx_vsi_swapinfo(&si);
22923 +                       if (si.totalswap < (1 << 10))
22924 +                               return 0;
22925 +                       seq_printf(swap, "%s\t\t\t\t\t%s\t%lu\t%lu\t%d\n",
22926 +                               "hdv0", "partition", si.totalswap >> 10,
22927 +                               (si.totalswap - si.freeswap) >> 10, -1);
22928 +               }
22929                 return 0;
22930         }
22931
22932 @@ -2609,6 +2620,8 @@ void si_swapinfo(struct sysinfo *val)
22933         val->freeswap = atomic_long_read(&nr_swap_pages) + nr_to_be_unused;
22934         val->totalswap = total_swap_pages + nr_to_be_unused;
22935         spin_unlock(&swap_lock);
22936 +       if (vx_flags(VXF_VIRT_MEM, 0))
22937 +               vx_vsi_swapinfo(val);
22938  }
22939
22940  /*
22941 diff -NurpP --minimal linux-4.4.111/net/bridge/br_multicast.c linux-4.4.111-vs2.3.9.5/net/bridge/br_multicast.c
22942 --- linux-4.4.111/net/bridge/br_multicast.c     2018-01-11 07:57:54.000000000 +0000
22943 +++ linux-4.4.111-vs2.3.9.5/net/bridge/br_multicast.c   2018-01-09 16:36:34.000000000 +0000
22944 @@ -462,7 +462,7 @@ static struct sk_buff *br_ip6_multicast_
22945         ip6h->hop_limit = 1;
22946         ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1));
22947         if (ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0,
22948 -                              &ip6h->saddr)) {
22949 +                              &ip6h->saddr, NULL)) {
22950                 kfree_skb(skb);
22951                 br->has_ipv6_addr = 0;
22952                 return NULL;
22953 diff -NurpP --minimal linux-4.4.111/net/core/dev.c linux-4.4.111-vs2.3.9.5/net/core/dev.c
22954 --- linux-4.4.111/net/core/dev.c        2018-01-11 07:57:54.000000000 +0000
22955 +++ linux-4.4.111-vs2.3.9.5/net/core/dev.c      2018-01-09 16:36:34.000000000 +0000
22956 @@ -124,6 +124,7 @@
22957  #include <linux/in.h>
22958  #include <linux/jhash.h>
22959  #include <linux/random.h>
22960 +#include <linux/vs_inet.h>
22961  #include <trace/events/napi.h>
22962  #include <trace/events/net.h>
22963  #include <trace/events/skb.h>
22964 @@ -726,7 +727,8 @@ struct net_device *__dev_get_by_name(str
22965         struct hlist_head *head = dev_name_hash(net, name);
22966
22967         hlist_for_each_entry(dev, head, name_hlist)
22968 -               if (!strncmp(dev->name, name, IFNAMSIZ))
22969 +               if (!strncmp(dev->name, name, IFNAMSIZ) &&
22970 +                   nx_dev_visible(current_nx_info(), dev))
22971                         return dev;
22972
22973         return NULL;
22974 @@ -751,7 +753,8 @@ struct net_device *dev_get_by_name_rcu(s
22975         struct hlist_head *head = dev_name_hash(net, name);
22976
22977         hlist_for_each_entry_rcu(dev, head, name_hlist)
22978 -               if (!strncmp(dev->name, name, IFNAMSIZ))
22979 +               if (!strncmp(dev->name, name, IFNAMSIZ) &&
22980 +                   nx_dev_visible(current_nx_info(), dev))
22981                         return dev;
22982
22983         return NULL;
22984 @@ -801,7 +804,8 @@ struct net_device *__dev_get_by_index(st
22985         struct hlist_head *head = dev_index_hash(net, ifindex);
22986
22987         hlist_for_each_entry(dev, head, index_hlist)
22988 -               if (dev->ifindex == ifindex)
22989 +               if ((dev->ifindex == ifindex) &&
22990 +                   nx_dev_visible(current_nx_info(), dev))
22991                         return dev;
22992
22993         return NULL;
22994 @@ -819,7 +823,7 @@ EXPORT_SYMBOL(__dev_get_by_index);
22995   *     about locking. The caller must hold RCU lock.
22996   */
22997
22998 -struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
22999 +struct net_device *dev_get_by_index_real_rcu(struct net *net, int ifindex)
23000  {
23001         struct net_device *dev;
23002         struct hlist_head *head = dev_index_hash(net, ifindex);
23003 @@ -830,6 +834,16 @@ struct net_device *dev_get_by_index_rcu(
23004
23005         return NULL;
23006  }
23007 +EXPORT_SYMBOL(dev_get_by_index_real_rcu);
23008 +
23009 +struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
23010 +{
23011 +       struct net_device *dev = dev_get_by_index_real_rcu(net, ifindex);
23012 +
23013 +       if (nx_dev_visible(current_nx_info(), dev))
23014 +               return dev;
23015 +       return NULL;
23016 +}
23017  EXPORT_SYMBOL(dev_get_by_index_rcu);
23018
23019
23020 @@ -912,7 +926,8 @@ struct net_device *dev_getbyhwaddr_rcu(s
23021
23022         for_each_netdev_rcu(net, dev)
23023                 if (dev->type == type &&
23024 -                   !memcmp(dev->dev_addr, ha, dev->addr_len))
23025 +                   !memcmp(dev->dev_addr, ha, dev->addr_len) &&
23026 +                   nx_dev_visible(current_nx_info(), dev))
23027                         return dev;
23028
23029         return NULL;
23030 @@ -924,9 +939,11 @@ struct net_device *__dev_getfirstbyhwtyp
23031         struct net_device *dev;
23032
23033         ASSERT_RTNL();
23034 -       for_each_netdev(net, dev)
23035 -               if (dev->type == type)
23036 +       for_each_netdev(net, dev) {
23037 +               if ((dev->type == type) &&
23038 +                   nx_dev_visible(current_nx_info(), dev))
23039                         return dev;
23040 +       }
23041
23042         return NULL;
23043  }
23044 @@ -938,7 +955,8 @@ struct net_device *dev_getfirstbyhwtype(
23045
23046         rcu_read_lock();
23047         for_each_netdev_rcu(net, dev)
23048 -               if (dev->type == type) {
23049 +               if ((dev->type == type) &&
23050 +                   nx_dev_visible(current_nx_info(), dev)) {
23051                         dev_hold(dev);
23052                         ret = dev;
23053                         break;
23054 @@ -968,7 +986,8 @@ struct net_device *__dev_get_by_flags(st
23055
23056         ret = NULL;
23057         for_each_netdev(net, dev) {
23058 -               if (((dev->flags ^ if_flags) & mask) == 0) {
23059 +               if ((((dev->flags ^ if_flags) & mask) == 0) &&
23060 +                       nx_dev_visible(current_nx_info(), dev)) {
23061                         ret = dev;
23062                         break;
23063                 }
23064 @@ -1046,6 +1065,8 @@ static int __dev_alloc_name(struct net *
23065                                 continue;
23066                         if (i < 0 || i >= max_netdevices)
23067                                 continue;
23068 +                       if (!nx_dev_visible(current_nx_info(), d))
23069 +                               continue;
23070
23071                         /*  avoid cases where sscanf is not exact inverse of printf */
23072                         snprintf(buf, IFNAMSIZ, name, i);
23073 diff -NurpP --minimal linux-4.4.111/net/core/net-procfs.c linux-4.4.111-vs2.3.9.5/net/core/net-procfs.c
23074 --- linux-4.4.111/net/core/net-procfs.c 2015-04-12 22:12:50.000000000 +0000
23075 +++ linux-4.4.111-vs2.3.9.5/net/core/net-procfs.c       2018-01-09 16:36:34.000000000 +0000
23076 @@ -1,6 +1,7 @@
23077  #include <linux/netdevice.h>
23078  #include <linux/proc_fs.h>
23079  #include <linux/seq_file.h>
23080 +#include <linux/vs_inet.h>
23081  #include <net/wext.h>
23082
23083  #define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
23084 @@ -77,8 +78,13 @@ static void dev_seq_stop(struct seq_file
23085  static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
23086  {
23087         struct rtnl_link_stats64 temp;
23088 -       const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
23089 +       const struct rtnl_link_stats64 *stats;
23090 +
23091 +       /* device visible inside network context? */
23092 +       if (!nx_dev_visible(current_nx_info(), dev))
23093 +               return;
23094
23095 +       stats = dev_get_stats(dev, &temp);
23096         seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
23097                    "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
23098                    dev->name, stats->rx_bytes, stats->rx_packets,
23099 diff -NurpP --minimal linux-4.4.111/net/core/rtnetlink.c linux-4.4.111-vs2.3.9.5/net/core/rtnetlink.c
23100 --- linux-4.4.111/net/core/rtnetlink.c  2018-01-11 07:57:54.000000000 +0000
23101 +++ linux-4.4.111-vs2.3.9.5/net/core/rtnetlink.c        2018-01-09 16:36:34.000000000 +0000
23102 @@ -1456,6 +1456,8 @@ static int rtnl_dump_ifinfo(struct sk_bu
23103                 hlist_for_each_entry(dev, head, index_hlist) {
23104                         if (idx < s_idx)
23105                                 goto cont;
23106 +                       if (!nx_dev_visible(skb->sk->sk_nx_info, dev))
23107 +                               continue;
23108                         err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
23109                                                NETLINK_CB(cb->skb).portid,
23110                                                cb->nlh->nlmsg_seq, 0,
23111 @@ -2559,6 +2561,9 @@ void rtmsg_ifinfo(int type, struct net_d
23112  {
23113         struct sk_buff *skb;
23114
23115 +       if (!nx_dev_visible(current_nx_info(), dev))
23116 +               return;
23117 +
23118         if (dev->reg_state != NETREG_REGISTERED)
23119                 return;
23120
23121 diff -NurpP --minimal linux-4.4.111/net/core/sock.c linux-4.4.111-vs2.3.9.5/net/core/sock.c
23122 --- linux-4.4.111/net/core/sock.c       2018-01-11 07:57:54.000000000 +0000
23123 +++ linux-4.4.111-vs2.3.9.5/net/core/sock.c     2018-01-09 17:15:58.000000000 +0000
23124 @@ -134,6 +134,10 @@
23125  #include <linux/sock_diag.h>
23126
23127  #include <linux/filter.h>
23128 +#include <linux/vs_socket.h>
23129 +#include <linux/vs_limit.h>
23130 +#include <linux/vs_context.h>
23131 +#include <linux/vs_network.h>
23132
23133  #include <trace/events/sock.h>
23134
23135 @@ -1363,6 +1367,8 @@ static struct sock *sk_prot_alloc(struct
23136                         goto out_free_sec;
23137                 sk_tx_queue_clear(sk);
23138         }
23139 +               sock_vx_init(sk);
23140 +               sock_nx_init(sk);
23141
23142         return sk;
23143
23144 @@ -1469,6 +1475,11 @@ void sk_destruct(struct sock *sk)
23145         put_pid(sk->sk_peer_pid);
23146         if (likely(sk->sk_net_refcnt))
23147                 put_net(sock_net(sk));
23148 +       vx_sock_dec(sk);
23149 +       clr_vx_info(&sk->sk_vx_info);
23150 +       sk->sk_xid = -1;
23151 +       clr_nx_info(&sk->sk_nx_info);
23152 +       sk->sk_nid = -1;
23153         sk_prot_free(sk->sk_prot_creator, sk);
23154  }
23155
23156 @@ -1521,6 +1532,8 @@ struct sock *sk_clone_lock(const struct
23157                 /* SANITY */
23158                 if (likely(newsk->sk_net_refcnt))
23159                         get_net(sock_net(newsk));
23160 +               sock_vx_init(newsk);
23161 +               sock_nx_init(newsk);
23162                 sk_node_init(&newsk->sk_node);
23163                 sock_lock_init(newsk);
23164                 bh_lock_sock(newsk);
23165 @@ -1586,6 +1599,12 @@ struct sock *sk_clone_lock(const struct
23166                 smp_wmb();
23167                 atomic_set(&newsk->sk_refcnt, 2);
23168
23169 +               set_vx_info(&newsk->sk_vx_info, sk->sk_vx_info);
23170 +               newsk->sk_xid = sk->sk_xid;
23171 +               vx_sock_inc(newsk);
23172 +               set_nx_info(&newsk->sk_nx_info, sk->sk_nx_info);
23173 +               newsk->sk_nid = sk->sk_nid;
23174 +
23175                 /*
23176                  * Increment the counter in the same struct proto as the master
23177                  * sock (sk_refcnt_debug_inc uses newsk->sk_prot->socks, that
23178 @@ -2424,6 +2443,12 @@ void sock_init_data(struct socket *sock,
23179
23180         sk->sk_stamp = ktime_set(-1L, 0);
23181
23182 +       set_vx_info(&sk->sk_vx_info, current_vx_info());
23183 +       sk->sk_xid = vx_current_xid();
23184 +       vx_sock_inc(sk);
23185 +       set_nx_info(&sk->sk_nx_info, current_nx_info());
23186 +       sk->sk_nid = nx_current_nid();
23187 +
23188  #ifdef CONFIG_NET_RX_BUSY_POLL
23189         sk->sk_napi_id          =       0;
23190         sk->sk_ll_usec          =       sysctl_net_busy_read;
23191 diff -NurpP --minimal linux-4.4.111/net/ipv4/af_inet.c linux-4.4.111-vs2.3.9.5/net/ipv4/af_inet.c
23192 --- linux-4.4.111/net/ipv4/af_inet.c    2018-01-11 07:57:54.000000000 +0000
23193 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/af_inet.c  2018-01-09 17:11:11.000000000 +0000
23194 @@ -308,10 +308,15 @@ lookup_protocol:
23195         }
23196
23197         err = -EPERM;
23198 +       if ((protocol == IPPROTO_ICMP) &&
23199 +               nx_capable(CAP_NET_RAW, NXC_RAW_ICMP))
23200 +               goto override;
23201 +
23202         if (sock->type == SOCK_RAW && !kern &&
23203             !ns_capable(net->user_ns, CAP_NET_RAW))
23204                 goto out_rcu_unlock;
23205
23206 +override:
23207         sock->ops = answer->ops;
23208         answer_prot = answer->prot;
23209         answer_flags = answer->flags;
23210 @@ -425,6 +430,7 @@ int inet_bind(struct socket *sock, struc
23211         struct sock *sk = sock->sk;
23212         struct inet_sock *inet = inet_sk(sk);
23213         struct net *net = sock_net(sk);
23214 +       struct nx_v4_sock_addr nsa;
23215         unsigned short snum;
23216         int chk_addr_ret;
23217         u32 tb_id = RT_TABLE_LOCAL;
23218 @@ -450,7 +456,11 @@ int inet_bind(struct socket *sock, struc
23219         }
23220
23221         tb_id = l3mdev_fib_table_by_index(net, sk->sk_bound_dev_if) ? : tb_id;
23222 -       chk_addr_ret = inet_addr_type_table(net, addr->sin_addr.s_addr, tb_id);
23223 +       err = v4_map_sock_addr(inet, addr, &nsa);
23224 +       if (err)
23225 +               goto out;
23226 +
23227 +       chk_addr_ret = inet_addr_type_table(net, nsa.saddr, tb_id);
23228
23229         /* Not specified by any standard per-se, however it breaks too
23230          * many applications when removed.  It is unfortunate since
23231 @@ -462,7 +472,7 @@ int inet_bind(struct socket *sock, struc
23232         err = -EADDRNOTAVAIL;
23233         if (!net->ipv4.sysctl_ip_nonlocal_bind &&
23234             !(inet->freebind || inet->transparent) &&
23235 -           addr->sin_addr.s_addr != htonl(INADDR_ANY) &&
23236 +           nsa.saddr != htonl(INADDR_ANY) &&
23237             chk_addr_ret != RTN_LOCAL &&
23238             chk_addr_ret != RTN_MULTICAST &&
23239             chk_addr_ret != RTN_BROADCAST)
23240 @@ -488,7 +498,7 @@ int inet_bind(struct socket *sock, struc
23241         if (sk->sk_state != TCP_CLOSE || inet->inet_num)
23242                 goto out_release_sock;
23243
23244 -       inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
23245 +       v4_set_sock_addr(inet, &nsa);
23246         if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
23247                 inet->inet_saddr = 0;  /* Use device */
23248
23249 @@ -708,11 +718,13 @@ int inet_getname(struct socket *sock, st
23250                      peer == 1))
23251                         return -ENOTCONN;
23252                 sin->sin_port = inet->inet_dport;
23253 -               sin->sin_addr.s_addr = inet->inet_daddr;
23254 +               sin->sin_addr.s_addr =
23255 +                       nx_map_sock_lback(sk->sk_nx_info, inet->inet_daddr);
23256         } else {
23257                 __be32 addr = inet->inet_rcv_saddr;
23258                 if (!addr)
23259                         addr = inet->inet_saddr;
23260 +               addr = nx_map_sock_lback(sk->sk_nx_info, addr);
23261                 sin->sin_port = inet->inet_sport;
23262                 sin->sin_addr.s_addr = addr;
23263         }
23264 @@ -896,6 +908,7 @@ static int inet_compat_ioctl(struct sock
23265         return err;
23266  }
23267  #endif
23268 +#include <linux/vs_limit.h>
23269
23270  const struct proto_ops inet_stream_ops = {
23271         .family            = PF_INET,
23272 diff -NurpP --minimal linux-4.4.111/net/ipv4/arp.c linux-4.4.111-vs2.3.9.5/net/ipv4/arp.c
23273 --- linux-4.4.111/net/ipv4/arp.c        2018-01-11 07:57:54.000000000 +0000
23274 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/arp.c      2018-01-09 16:36:34.000000000 +0000
23275 @@ -1290,6 +1290,7 @@ static void arp_format_neigh_entry(struc
23276         struct net_device *dev = n->dev;
23277         int hatype = dev->type;
23278
23279 +       /* FIXME: check for network context */
23280         read_lock(&n->lock);
23281         /* Convert hardware address to XX:XX:XX:XX ... form. */
23282  #if IS_ENABLED(CONFIG_AX25)
23283 @@ -1321,6 +1322,7 @@ static void arp_format_pneigh_entry(stru
23284         int hatype = dev ? dev->type : 0;
23285         char tbuf[16];
23286
23287 +       /* FIXME: check for network context */
23288         sprintf(tbuf, "%pI4", n->key);
23289         seq_printf(seq, "%-16s 0x%-10x0x%-10x%s     *        %s\n",
23290                    tbuf, hatype, ATF_PUBL | ATF_PERM, "00:00:00:00:00:00",
23291 diff -NurpP --minimal linux-4.4.111/net/ipv4/devinet.c linux-4.4.111-vs2.3.9.5/net/ipv4/devinet.c
23292 --- linux-4.4.111/net/ipv4/devinet.c    2018-01-11 07:57:54.000000000 +0000
23293 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/devinet.c  2018-01-09 16:36:34.000000000 +0000
23294 @@ -538,6 +538,7 @@ struct in_device *inetdev_by_index(struc
23295  }
23296  EXPORT_SYMBOL(inetdev_by_index);
23297
23298 +
23299  /* Called only from RTNL semaphored context. No locks. */
23300
23301  struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,
23302 @@ -992,6 +993,8 @@ int devinet_ioctl(struct net *net, unsig
23303
23304         in_dev = __in_dev_get_rtnl(dev);
23305         if (in_dev) {
23306 +               struct nx_info *nxi = current_nx_info();
23307 +
23308                 if (tryaddrmatch) {
23309                         /* Matthias Andree */
23310                         /* compare label and address (4.4BSD style) */
23311 @@ -1000,6 +1003,8 @@ int devinet_ioctl(struct net *net, unsig
23312                            This is checked above. */
23313                         for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
23314                              ifap = &ifa->ifa_next) {
23315 +                               if (!nx_v4_ifa_visible(nxi, ifa))
23316 +                                       continue;
23317                                 if (!strcmp(ifr.ifr_name, ifa->ifa_label) &&
23318                                     sin_orig.sin_addr.s_addr ==
23319                                                         ifa->ifa_local) {
23320 @@ -1012,9 +1017,12 @@ int devinet_ioctl(struct net *net, unsig
23321                    comparing just the label */
23322                 if (!ifa) {
23323                         for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
23324 -                            ifap = &ifa->ifa_next)
23325 +                            ifap = &ifa->ifa_next) {
23326 +                               if (!nx_v4_ifa_visible(nxi, ifa))
23327 +                                       continue;
23328                                 if (!strcmp(ifr.ifr_name, ifa->ifa_label))
23329                                         break;
23330 +                       }
23331                 }
23332         }
23333
23334 @@ -1168,6 +1176,8 @@ static int inet_gifconf(struct net_devic
23335                 goto out;
23336
23337         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
23338 +               if (!nx_v4_ifa_visible(current_nx_info(), ifa))
23339 +                       continue;
23340                 if (!buf) {
23341                         done += sizeof(ifr);
23342                         continue;
23343 @@ -1573,6 +1583,7 @@ static int inet_dump_ifaddr(struct sk_bu
23344         struct net_device *dev;
23345         struct in_device *in_dev;
23346         struct in_ifaddr *ifa;
23347 +       struct sock *sk = skb->sk;
23348         struct hlist_head *head;
23349
23350         s_h = cb->args[0];
23351 @@ -1596,6 +1607,8 @@ static int inet_dump_ifaddr(struct sk_bu
23352
23353                         for (ifa = in_dev->ifa_list, ip_idx = 0; ifa;
23354                              ifa = ifa->ifa_next, ip_idx++) {
23355 +                       if (sk && !nx_v4_ifa_visible(sk->sk_nx_info, ifa))
23356 +                               continue;
23357                                 if (ip_idx < s_ip_idx)
23358                                         continue;
23359                                 if (inet_fill_ifaddr(skb, ifa,
23360 diff -NurpP --minimal linux-4.4.111/net/ipv4/fib_trie.c linux-4.4.111-vs2.3.9.5/net/ipv4/fib_trie.c
23361 --- linux-4.4.111/net/ipv4/fib_trie.c   2018-01-11 07:57:54.000000000 +0000
23362 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/fib_trie.c 2018-01-09 16:36:34.000000000 +0000
23363 @@ -2591,6 +2591,7 @@ static int fib_route_seq_show(struct seq
23364
23365                 seq_setwidth(seq, 127);
23366
23367 +               /* FIXME: check for network context? */
23368                 if (fi)
23369                         seq_printf(seq,
23370                                    "%s\t%08X\t%08X\t%04X\t%d\t%u\t"
23371 diff -NurpP --minimal linux-4.4.111/net/ipv4/inet_connection_sock.c linux-4.4.111-vs2.3.9.5/net/ipv4/inet_connection_sock.c
23372 --- linux-4.4.111/net/ipv4/inet_connection_sock.c       2018-01-11 07:57:54.000000000 +0000
23373 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/inet_connection_sock.c     2018-01-09 16:36:34.000000000 +0000
23374 @@ -43,6 +43,37 @@ void inet_get_local_port_range(struct ne
23375  }
23376  EXPORT_SYMBOL(inet_get_local_port_range);
23377
23378 +int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
23379 +{
23380 +       __be32  sk1_rcv_saddr = sk1->sk_rcv_saddr,
23381 +               sk2_rcv_saddr = sk2->sk_rcv_saddr;
23382 +
23383 +       if (inet_v6_ipv6only(sk2))
23384 +               return 0;
23385 +
23386 +       if (sk1_rcv_saddr &&
23387 +           sk2_rcv_saddr &&
23388 +           sk1_rcv_saddr == sk2_rcv_saddr)
23389 +               return 1;
23390 +
23391 +       if (sk1_rcv_saddr &&
23392 +           !sk2_rcv_saddr &&
23393 +           v4_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr, NXA_MASK_BIND))
23394 +               return 1;
23395 +
23396 +       if (sk2_rcv_saddr &&
23397 +           !sk1_rcv_saddr &&
23398 +           v4_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr, NXA_MASK_BIND))
23399 +               return 1;
23400 +
23401 +       if (!sk1_rcv_saddr &&
23402 +           !sk2_rcv_saddr &&
23403 +           nx_v4_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info))
23404 +               return 1;
23405 +
23406 +       return 0;
23407 +}
23408 +
23409  int inet_csk_bind_conflict(const struct sock *sk,
23410                            const struct inet_bind_bucket *tb, bool relax)
23411  {
23412 @@ -70,15 +101,13 @@ int inet_csk_bind_conflict(const struct
23413                             (sk2->sk_state != TCP_TIME_WAIT &&
23414                              !uid_eq(uid, sock_i_uid(sk2))))) {
23415
23416 -                               if (!sk2->sk_rcv_saddr || !sk->sk_rcv_saddr ||
23417 -                                   sk2->sk_rcv_saddr == sk->sk_rcv_saddr)
23418 +                               if (ipv4_rcv_saddr_equal(sk, sk2))
23419                                         break;
23420                         }
23421                         if (!relax && reuse && sk2->sk_reuse &&
23422                             sk2->sk_state != TCP_LISTEN) {
23423
23424 -                               if (!sk2->sk_rcv_saddr || !sk->sk_rcv_saddr ||
23425 -                                   sk2->sk_rcv_saddr == sk->sk_rcv_saddr)
23426 +                               if (ipv4_rcv_saddr_equal(sk, sk2))
23427                                         break;
23428                         }
23429                 }
23430 diff -NurpP --minimal linux-4.4.111/net/ipv4/inet_diag.c linux-4.4.111-vs2.3.9.5/net/ipv4/inet_diag.c
23431 --- linux-4.4.111/net/ipv4/inet_diag.c  2016-07-05 04:15:14.000000000 +0000
23432 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/inet_diag.c        2018-01-09 16:36:34.000000000 +0000
23433 @@ -31,6 +31,8 @@
23434
23435  #include <linux/inet.h>
23436  #include <linux/stddef.h>
23437 +#include <linux/vs_network.h>
23438 +#include <linux/vs_inet.h>
23439
23440  #include <linux/inet_diag.h>
23441  #include <linux/sock_diag.h>
23442 @@ -761,6 +763,8 @@ void inet_diag_dump_icsk(struct inet_has
23443                                 if (!net_eq(sock_net(sk), net))
23444                                         continue;
23445
23446 +                               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23447 +                                       continue;
23448                                 if (num < s_num) {
23449                                         num++;
23450                                         continue;
23451 @@ -822,6 +826,8 @@ skip_listen_ht:
23452
23453                         if (!net_eq(sock_net(sk), net))
23454                                 continue;
23455 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23456 +                               continue;
23457                         if (num < s_num)
23458                                 goto next_normal;
23459                         state = (sk->sk_state == TCP_TIME_WAIT) ?
23460 diff -NurpP --minimal linux-4.4.111/net/ipv4/inet_hashtables.c linux-4.4.111-vs2.3.9.5/net/ipv4/inet_hashtables.c
23461 --- linux-4.4.111/net/ipv4/inet_hashtables.c    2016-07-05 04:15:14.000000000 +0000
23462 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/inet_hashtables.c  2018-01-09 16:36:34.000000000 +0000
23463 @@ -23,6 +23,7 @@
23464  #include <net/inet_connection_sock.h>
23465  #include <net/inet_hashtables.h>
23466  #include <net/secure_seq.h>
23467 +#include <net/route.h>
23468  #include <net/ip.h>
23469
23470  static u32 inet_ehashfn(const struct net *net, const __be32 laddr,
23471 @@ -183,6 +184,11 @@ static inline int compute_score(struct s
23472                         if (rcv_saddr != daddr)
23473                                 return -1;
23474                         score += 4;
23475 +               } else {
23476 +                       /* block non nx_info ips */
23477 +                       if (!v4_addr_in_nx_info(sk->sk_nx_info,
23478 +                               daddr, NXA_MASK_BIND))
23479 +                               return -1;
23480                 }
23481                 if (sk->sk_bound_dev_if) {
23482                         if (sk->sk_bound_dev_if != dif)
23483 @@ -202,7 +208,6 @@ static inline int compute_score(struct s
23484   * wildcarded during the search since they can never be otherwise.
23485   */
23486
23487 -
23488  struct sock *__inet_lookup_listener(struct net *net,
23489                                     struct inet_hashinfo *hashinfo,
23490                                     const __be32 saddr, __be16 sport,
23491 @@ -238,6 +243,7 @@ begin:
23492                         phash = next_pseudo_random32(phash);
23493                 }
23494         }
23495 +
23496         /*
23497          * if the nulls value we got at the end of this lookup is
23498          * not the expected one, we must restart lookup.
23499 diff -NurpP --minimal linux-4.4.111/net/ipv4/netfilter.c linux-4.4.111-vs2.3.9.5/net/ipv4/netfilter.c
23500 --- linux-4.4.111/net/ipv4/netfilter.c  2016-07-05 04:15:14.000000000 +0000
23501 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/netfilter.c        2018-01-09 16:36:34.000000000 +0000
23502 @@ -11,7 +11,7 @@
23503  #include <linux/skbuff.h>
23504  #include <linux/gfp.h>
23505  #include <linux/export.h>
23506 -#include <net/route.h>
23507 +// #include <net/route.h>
23508  #include <net/xfrm.h>
23509  #include <net/ip.h>
23510  #include <net/netfilter/nf_queue.h>
23511 diff -NurpP --minimal linux-4.4.111/net/ipv4/raw.c linux-4.4.111-vs2.3.9.5/net/ipv4/raw.c
23512 --- linux-4.4.111/net/ipv4/raw.c        2018-01-11 07:57:55.000000000 +0000
23513 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/raw.c      2018-01-09 17:06:10.000000000 +0000
23514 @@ -126,7 +126,7 @@ static struct sock *__raw_v4_lookup(stru
23515
23516                 if (net_eq(sock_net(sk), net) && inet->inet_num == num  &&
23517                     !(inet->inet_daddr && inet->inet_daddr != raddr)    &&
23518 -                   !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
23519 +                   v4_sock_addr_match(sk->sk_nx_info, inet, laddr)     &&
23520                     !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
23521                         goto found; /* gotcha */
23522         }
23523 @@ -416,6 +416,12 @@ static int raw_send_hdrinc(struct sock *
23524                                 skb_transport_header(skb))->type);
23525         }
23526
23527 +       err = -EPERM;
23528 +       if (!nx_check(0, VS_ADMIN) && !capable(CAP_NET_RAW) &&
23529 +               sk->sk_nx_info &&
23530 +               !v4_addr_in_nx_info(sk->sk_nx_info, iph->saddr, NXA_MASK_BIND))
23531 +               goto error_free;
23532 +
23533         err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT,
23534                       net, sk, skb, NULL, rt->dst.dev,
23535                       dst_output);
23536 @@ -626,6 +632,16 @@ static int raw_sendmsg(struct sock *sk,
23537                         goto done;
23538         }
23539
23540 +       if (sk->sk_nx_info) {
23541 +               rt = ip_v4_find_src(sock_net(sk), sk->sk_nx_info, &fl4);
23542 +               if (IS_ERR(rt)) {
23543 +                       err = PTR_ERR(rt);
23544 +                       rt = NULL;
23545 +                       goto done;
23546 +               }
23547 +               ip_rt_put(rt);
23548 +       }
23549 +
23550         security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
23551         rt = ip_route_output_flow(net, &fl4, sk);
23552         if (IS_ERR(rt)) {
23553 @@ -704,17 +720,19 @@ static int raw_bind(struct sock *sk, str
23554  {
23555         struct inet_sock *inet = inet_sk(sk);
23556         struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
23557 +       struct nx_v4_sock_addr nsa = { 0 };
23558         int ret = -EINVAL;
23559         int chk_addr_ret;
23560
23561         if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
23562                 goto out;
23563 -       chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
23564 +       v4_map_sock_addr(inet, addr, &nsa);
23565 +       chk_addr_ret = inet_addr_type(sock_net(sk), nsa.saddr);
23566         ret = -EADDRNOTAVAIL;
23567 -       if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
23568 +       if (nsa.saddr && chk_addr_ret != RTN_LOCAL &&
23569             chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
23570                 goto out;
23571 -       inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
23572 +       v4_set_sock_addr(inet, &nsa);
23573         if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
23574                 inet->inet_saddr = 0;  /* Use device */
23575         sk_dst_reset(sk);
23576 @@ -763,7 +781,8 @@ static int raw_recvmsg(struct sock *sk,
23577         /* Copy the address. */
23578         if (sin) {
23579                 sin->sin_family = AF_INET;
23580 -               sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
23581 +               sin->sin_addr.s_addr =
23582 +                       nx_map_sock_lback(sk->sk_nx_info, ip_hdr(skb)->saddr);
23583                 sin->sin_port = 0;
23584                 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
23585                 *addr_len = sizeof(*sin);
23586 @@ -959,7 +978,8 @@ static struct sock *raw_get_first(struct
23587         for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
23588                         ++state->bucket) {
23589                 sk_for_each(sk, &state->h->ht[state->bucket])
23590 -                       if (sock_net(sk) == seq_file_net(seq))
23591 +                       if ((sock_net(sk) == seq_file_net(seq)) &&
23592 +                           nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23593                                 goto found;
23594         }
23595         sk = NULL;
23596 @@ -975,7 +995,8 @@ static struct sock *raw_get_next(struct
23597                 sk = sk_next(sk);
23598  try_again:
23599                 ;
23600 -       } while (sk && sock_net(sk) != seq_file_net(seq));
23601 +       } while (sk && ((sock_net(sk) != seq_file_net(seq)) ||
23602 +               !nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT)));
23603
23604         if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
23605                 sk = sk_head(&state->h->ht[state->bucket]);
23606 diff -NurpP --minimal linux-4.4.111/net/ipv4/route.c linux-4.4.111-vs2.3.9.5/net/ipv4/route.c
23607 --- linux-4.4.111/net/ipv4/route.c      2018-01-11 07:57:55.000000000 +0000
23608 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/route.c    2018-01-09 16:36:34.000000000 +0000
23609 @@ -2226,7 +2226,7 @@ struct rtable *__ip_route_output_key_has
23610
23611
23612         if (fl4->flowi4_oif) {
23613 -               dev_out = dev_get_by_index_rcu(net, fl4->flowi4_oif);
23614 +               dev_out = dev_get_by_index_real_rcu(net, fl4->flowi4_oif);
23615                 rth = ERR_PTR(-ENODEV);
23616                 if (!dev_out)
23617                         goto out;
23618 diff -NurpP --minimal linux-4.4.111/net/ipv4/tcp.c linux-4.4.111-vs2.3.9.5/net/ipv4/tcp.c
23619 --- linux-4.4.111/net/ipv4/tcp.c        2018-01-11 07:57:55.000000000 +0000
23620 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/tcp.c      2018-01-09 16:36:34.000000000 +0000
23621 @@ -269,6 +269,7 @@
23622  #include <linux/crypto.h>
23623  #include <linux/time.h>
23624  #include <linux/slab.h>
23625 +#include <linux/in.h>
23626
23627  #include <net/icmp.h>
23628  #include <net/inet_common.h>
23629 diff -NurpP --minimal linux-4.4.111/net/ipv4/tcp_ipv4.c linux-4.4.111-vs2.3.9.5/net/ipv4/tcp_ipv4.c
23630 --- linux-4.4.111/net/ipv4/tcp_ipv4.c   2018-01-11 07:57:55.000000000 +0000
23631 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/tcp_ipv4.c 2018-01-09 17:13:45.000000000 +0000
23632 @@ -1885,6 +1885,10 @@ static void *listening_get_next(struct s
23633         sk = sk_nulls_next(sk);
23634  get_sk:
23635         sk_nulls_for_each_from(sk, node) {
23636 +               vxdprintk(VXD_CBIT(net, 6), "sk: %p [#%d] (from %d)",
23637 +                       sk, sk->sk_nid, nx_current_nid());
23638 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23639 +                       continue;
23640                 if (!net_eq(sock_net(sk), net))
23641                         continue;
23642                 if (sk->sk_family == st->family) {
23643 @@ -1949,6 +1953,11 @@ static void *established_get_first(struc
23644
23645                 spin_lock_bh(lock);
23646                 sk_nulls_for_each(sk, node, &tcp_hashinfo.ehash[st->bucket].chain) {
23647 +                       vxdprintk(VXD_CBIT(net, 6),
23648 +                               "sk,egf: %p [#%d] (from %d)",
23649 +                               sk, sk->sk_nid, nx_current_nid());
23650 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23651 +                               continue;
23652                         if (sk->sk_family != st->family ||
23653                             !net_eq(sock_net(sk), net)) {
23654                                 continue;
23655 @@ -1975,6 +1984,11 @@ static void *established_get_next(struct
23656         sk = sk_nulls_next(sk);
23657
23658         sk_nulls_for_each_from(sk, node) {
23659 +               vxdprintk(VXD_CBIT(net, 6),
23660 +                       "sk,egn: %p [#%d] (from %d)",
23661 +                       sk, sk->sk_nid, nx_current_nid());
23662 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23663 +                       continue;
23664                 if (sk->sk_family == st->family && net_eq(sock_net(sk), net))
23665                         return sk;
23666         }
23667 @@ -2166,9 +2180,9 @@ static void get_openreq4(const struct re
23668         seq_printf(f, "%4d: %08X:%04X %08X:%04X"
23669                 " %02X %08X:%08X %02X:%08lX %08X %5u %8d %u %d %pK",
23670                 i,
23671 -               ireq->ir_loc_addr,
23672 +               nx_map_sock_lback(current_nx_info(), ireq->ir_loc_addr),
23673                 ireq->ir_num,
23674 -               ireq->ir_rmt_addr,
23675 +               nx_map_sock_lback(current_nx_info(), ireq->ir_rmt_addr),
23676                 ntohs(ireq->ir_rmt_port),
23677                 TCP_SYN_RECV,
23678                 0, 0, /* could print option size, but that is af dependent. */
23679 @@ -2191,8 +2205,8 @@ static void get_tcp4_sock(struct sock *s
23680         const struct inet_connection_sock *icsk = inet_csk(sk);
23681         const struct inet_sock *inet = inet_sk(sk);
23682         const struct fastopen_queue *fastopenq = &icsk->icsk_accept_queue.fastopenq;
23683 -       __be32 dest = inet->inet_daddr;
23684 -       __be32 src = inet->inet_rcv_saddr;
23685 +       __be32 dest = nx_map_sock_lback(current_nx_info(), inet->inet_daddr);
23686 +       __be32 src = nx_map_sock_lback(current_nx_info(), inet->inet_rcv_saddr);
23687         __u16 destp = ntohs(inet->inet_dport);
23688         __u16 srcp = ntohs(inet->inet_sport);
23689         int rx_queue;
23690 @@ -2251,8 +2265,8 @@ static void get_timewait4_sock(const str
23691         __be32 dest, src;
23692         __u16 destp, srcp;
23693
23694 -       dest  = tw->tw_daddr;
23695 -       src   = tw->tw_rcv_saddr;
23696 +       dest  = nx_map_sock_lback(current_nx_info(), tw->tw_daddr);
23697 +       src   = nx_map_sock_lback(current_nx_info(), tw->tw_rcv_saddr);
23698         destp = ntohs(tw->tw_dport);
23699         srcp  = ntohs(tw->tw_sport);
23700
23701 diff -NurpP --minimal linux-4.4.111/net/ipv4/tcp_minisocks.c linux-4.4.111-vs2.3.9.5/net/ipv4/tcp_minisocks.c
23702 --- linux-4.4.111/net/ipv4/tcp_minisocks.c      2018-01-11 07:57:55.000000000 +0000
23703 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/tcp_minisocks.c    2018-01-09 16:36:34.000000000 +0000
23704 @@ -23,6 +23,9 @@
23705  #include <linux/slab.h>
23706  #include <linux/sysctl.h>
23707  #include <linux/workqueue.h>
23708 +#include <linux/vs_limit.h>
23709 +#include <linux/vs_socket.h>
23710 +#include <linux/vs_context.h>
23711  #include <net/tcp.h>
23712  #include <net/inet_common.h>
23713  #include <net/xfrm.h>
23714 @@ -291,6 +294,11 @@ void tcp_time_wait(struct sock *sk, int
23715                 tcptw->tw_ts_offset     = tp->tsoffset;
23716                 tcptw->tw_last_oow_ack_time = 0;
23717
23718 +               tw->tw_xid              = sk->sk_xid;
23719 +               tw->tw_vx_info          = NULL;
23720 +               tw->tw_nid              = sk->sk_nid;
23721 +               tw->tw_nx_info          = NULL;
23722 +
23723  #if IS_ENABLED(CONFIG_IPV6)
23724                 if (tw->tw_family == PF_INET6) {
23725                         struct ipv6_pinfo *np = inet6_sk(sk);
23726 diff -NurpP --minimal linux-4.4.111/net/ipv4/udp.c linux-4.4.111-vs2.3.9.5/net/ipv4/udp.c
23727 --- linux-4.4.111/net/ipv4/udp.c        2018-01-11 07:57:55.000000000 +0000
23728 +++ linux-4.4.111-vs2.3.9.5/net/ipv4/udp.c      2018-01-09 16:36:34.000000000 +0000
23729 @@ -309,14 +309,7 @@ fail:
23730  }
23731  EXPORT_SYMBOL(udp_lib_get_port);
23732
23733 -static int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
23734 -{
23735 -       struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2);
23736 -
23737 -       return  (!ipv6_only_sock(sk2)  &&
23738 -                (!inet1->inet_rcv_saddr || !inet2->inet_rcv_saddr ||
23739 -                  inet1->inet_rcv_saddr == inet2->inet_rcv_saddr));
23740 -}
23741 +extern int ipv4_rcv_saddr_equal(const struct sock *, const struct sock *);
23742
23743  static u32 udp4_portaddr_hash(const struct net *net, __be32 saddr,
23744                               unsigned int port)
23745 @@ -355,6 +348,11 @@ static inline int compute_score(struct s
23746                 if (inet->inet_rcv_saddr != daddr)
23747                         return -1;
23748                 score += 4;
23749 +               } else {
23750 +                       /* block non nx_info ips */
23751 +                       if (!v4_addr_in_nx_info(sk->sk_nx_info,
23752 +                               daddr, NXA_MASK_BIND))
23753 +                               return -1;
23754         }
23755
23756         if (inet->inet_daddr) {
23757 @@ -489,6 +487,7 @@ begin:
23758         return result;
23759  }
23760
23761 +
23762  /* UDP is nearly always wildcards out the wazoo, it makes no sense to try
23763   * harder than this. -DaveM
23764   */
23765 @@ -535,6 +534,11 @@ begin:
23766         sk_nulls_for_each_rcu(sk, node, &hslot->head) {
23767                 score = compute_score(sk, net, saddr, hnum, sport,
23768                                       daddr, dport, dif);
23769 +               /* FIXME: disabled?
23770 +               if (score == 9) {
23771 +                       result = sk;
23772 +                       break;
23773 +               } else */
23774                 if (score > badness) {
23775                         result = sk;
23776                         badness = score;
23777 @@ -559,6 +563,7 @@ begin:
23778         if (get_nulls_value(node) != slot)
23779                 goto begin;
23780
23781 +
23782         if (result) {
23783                 if (unlikely(!atomic_inc_not_zero_hint(&result->sk_refcnt, 2)))
23784                         result = NULL;
23785 @@ -568,6 +573,7 @@ begin:
23786                         goto begin;
23787                 }
23788         }
23789 +
23790         rcu_read_unlock();
23791         return result;
23792  }
23793 @@ -602,7 +608,7 @@ static inline bool __udp_is_mcast_sock(s
23794             udp_sk(sk)->udp_port_hash != hnum ||
23795             (inet->inet_daddr && inet->inet_daddr != rmt_addr) ||
23796             (inet->inet_dport != rmt_port && inet->inet_dport) ||
23797 -           (inet->inet_rcv_saddr && inet->inet_rcv_saddr != loc_addr) ||
23798 +           !v4_sock_addr_match(sk->sk_nx_info, inet, loc_addr) ||
23799             ipv6_only_sock(sk) ||
23800             (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
23801                 return false;
23802 @@ -1033,6 +1039,16 @@ int udp_sendmsg(struct sock *sk, struct
23803                                 goto out;
23804                 }
23805
23806 +               if (sk->sk_nx_info) {
23807 +                       rt = ip_v4_find_src(net, sk->sk_nx_info, fl4);
23808 +                       if (IS_ERR(rt)) {
23809 +                               err = PTR_ERR(rt);
23810 +                               rt = NULL;
23811 +                               goto out;
23812 +                       }
23813 +                       ip_rt_put(rt);
23814 +               }
23815 +
23816                 security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
23817                 rt = ip_route_output_flow(net, fl4, sk);
23818                 if (IS_ERR(rt)) {
23819 @@ -1337,7 +1353,8 @@ try_again:
23820         if (sin) {
23821                 sin->sin_family = AF_INET;
23822                 sin->sin_port = udp_hdr(skb)->source;
23823 -               sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
23824 +               sin->sin_addr.s_addr = nx_map_sock_lback(
23825 +                       skb->sk->sk_nx_info, ip_hdr(skb)->saddr);
23826                 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
23827                 *addr_len = sizeof(*sin);
23828         }
23829 @@ -2319,6 +2336,8 @@ static struct sock *udp_get_first(struct
23830                 sk_nulls_for_each(sk, node, &hslot->head) {
23831                         if (!net_eq(sock_net(sk), net))
23832                                 continue;
23833 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23834 +                               continue;
23835                         if (sk->sk_family == state->family)
23836                                 goto found;
23837                 }
23838 @@ -2336,7 +2355,9 @@ static struct sock *udp_get_next(struct
23839
23840         do {
23841                 sk = sk_nulls_next(sk);
23842 -       } while (sk && (!net_eq(sock_net(sk), net) || sk->sk_family != state->family));
23843 +       } while (sk && (!net_eq(sock_net(sk), net) ||
23844 +               sk->sk_family != state->family ||
23845 +               !nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT)));
23846
23847         if (!sk) {
23848                 if (state->bucket <= state->udp_table->mask)
23849 @@ -2432,8 +2453,8 @@ static void udp4_format_sock(struct sock
23850                 int bucket)
23851  {
23852         struct inet_sock *inet = inet_sk(sp);
23853 -       __be32 dest = inet->inet_daddr;
23854 -       __be32 src  = inet->inet_rcv_saddr;
23855 +       __be32 dest = nx_map_sock_lback(current_nx_info(), inet->inet_daddr);
23856 +       __be32 src = nx_map_sock_lback(current_nx_info(), inet->inet_rcv_saddr);
23857         __u16 destp       = ntohs(inet->inet_dport);
23858         __u16 srcp        = ntohs(inet->inet_sport);
23859
23860 diff -NurpP --minimal linux-4.4.111/net/ipv6/addrconf.c linux-4.4.111-vs2.3.9.5/net/ipv6/addrconf.c
23861 --- linux-4.4.111/net/ipv6/addrconf.c   2018-01-11 07:57:55.000000000 +0000
23862 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/addrconf.c 2018-01-09 23:41:55.000000000 +0000
23863 @@ -92,6 +92,8 @@
23864  #include <linux/proc_fs.h>
23865  #include <linux/seq_file.h>
23866  #include <linux/export.h>
23867 +#include <linux/vs_network.h>
23868 +#include <linux/vs_inet6.h>
23869
23870  /* Set to 3 to get tracing... */
23871  #define ACONF_DEBUG 2
23872 @@ -1442,7 +1444,8 @@ static int __ipv6_dev_get_saddr(struct n
23873                                 struct ipv6_saddr_dst *dst,
23874                                 struct inet6_dev *idev,
23875                                 struct ipv6_saddr_score *scores,
23876 -                               int hiscore_idx)
23877 +                               int hiscore_idx,
23878 +                               struct nx_info *nxi)
23879  {
23880         struct ipv6_saddr_score *score = &scores[1 - hiscore_idx], *hiscore = &scores[hiscore_idx];
23881
23882 @@ -1472,6 +1475,8 @@ static int __ipv6_dev_get_saddr(struct n
23883                                             idev->dev->name);
23884                         continue;
23885                 }
23886 +               if (!v6_addr_in_nx_info(nxi, &score->ifa->addr, -1))
23887 +                       continue;
23888
23889                 score->rule = -1;
23890                 bitmap_zero(score->scorebits, IPV6_SADDR_RULE_MAX);
23891 @@ -1519,7 +1524,7 @@ out:
23892
23893  int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
23894                        const struct in6_addr *daddr, unsigned int prefs,
23895 -                      struct in6_addr *saddr)
23896 +                      struct in6_addr *saddr, struct nx_info *nxi)
23897  {
23898         struct ipv6_saddr_score scores[2], *hiscore;
23899         struct ipv6_saddr_dst dst;
23900 @@ -1568,13 +1573,15 @@ int ipv6_dev_get_saddr(struct net *net,
23901
23902         if (use_oif_addr) {
23903                 if (idev)
23904 -                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
23905 +                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst,
23906 +                               idev, scores, hiscore_idx, nxi);
23907         } else {
23908                 for_each_netdev_rcu(net, dev) {
23909                         idev = __in6_dev_get(dev);
23910                         if (!idev)
23911                                 continue;
23912 -                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
23913 +                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst,
23914 +                               idev, scores, hiscore_idx, nxi);
23915                 }
23916         }
23917         rcu_read_unlock();
23918 @@ -3846,7 +3853,10 @@ static void if6_seq_stop(struct seq_file
23919  static int if6_seq_show(struct seq_file *seq, void *v)
23920  {
23921         struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
23922 -       seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
23923 +
23924 +       if (nx_check(0, VS_ADMIN|VS_WATCH) ||
23925 +           v6_addr_in_nx_info(current_nx_info(), &ifp->addr, -1))
23926 +               seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
23927                    &ifp->addr,
23928                    ifp->idev->dev->ifindex,
23929                    ifp->prefix_len,
23930 @@ -4430,6 +4440,11 @@ static int in6_dump_addrs(struct inet6_d
23931         struct ifacaddr6 *ifaca;
23932         int err = 1;
23933         int ip_idx = *p_ip_idx;
23934 +       struct nx_info *nxi = skb->sk ? skb->sk->sk_nx_info : NULL;
23935 +
23936 +       /* disable ipv6 on non v6 guests */
23937 +       if (nxi && !nx_info_has_v6(nxi))
23938 +               return skb->len;
23939
23940         read_lock_bh(&idev->lock);
23941         switch (type) {
23942 @@ -4440,6 +4455,8 @@ static int in6_dump_addrs(struct inet6_d
23943                 list_for_each_entry(ifa, &idev->addr_list, if_list) {
23944                         if (++ip_idx < s_ip_idx)
23945                                 continue;
23946 +                       if (!v6_addr_in_nx_info(nxi, &ifa->addr, -1))
23947 +                               continue;
23948                         err = inet6_fill_ifaddr(skb, ifa,
23949                                                 NETLINK_CB(cb->skb).portid,
23950                                                 cb->nlh->nlmsg_seq,
23951 @@ -4457,6 +4474,8 @@ static int in6_dump_addrs(struct inet6_d
23952                      ifmca = ifmca->next, ip_idx++) {
23953                         if (ip_idx < s_ip_idx)
23954                                 continue;
23955 +                       if (!v6_addr_in_nx_info(nxi, &ifmca->mca_addr, -1))
23956 +                               continue;
23957                         err = inet6_fill_ifmcaddr(skb, ifmca,
23958                                                   NETLINK_CB(cb->skb).portid,
23959                                                   cb->nlh->nlmsg_seq,
23960 @@ -4472,6 +4491,8 @@ static int in6_dump_addrs(struct inet6_d
23961                      ifaca = ifaca->aca_next, ip_idx++) {
23962                         if (ip_idx < s_ip_idx)
23963                                 continue;
23964 +                       if (!v6_addr_in_nx_info(nxi, &ifaca->aca_addr, -1))
23965 +                               continue;
23966                         err = inet6_fill_ifacaddr(skb, ifaca,
23967                                                   NETLINK_CB(cb->skb).portid,
23968                                                   cb->nlh->nlmsg_seq,
23969 @@ -4500,6 +4521,10 @@ static int inet6_dump_addr(struct sk_buf
23970         struct inet6_dev *idev;
23971         struct hlist_head *head;
23972
23973 +       /* FIXME: maybe disable ipv6 on non v6 guests?
23974 +       if (skb->sk && skb->sk->sk_vx_info)
23975 +               return skb->len; */
23976 +
23977         s_h = cb->args[0];
23978         s_idx = idx = cb->args[1];
23979         s_ip_idx = ip_idx = cb->args[2];
23980 @@ -5008,6 +5033,7 @@ static int inet6_dump_ifinfo(struct sk_b
23981         struct net_device *dev;
23982         struct inet6_dev *idev;
23983         struct hlist_head *head;
23984 +       struct nx_info *nxi = skb->sk ? skb->sk->sk_nx_info : NULL;
23985
23986         s_h = cb->args[0];
23987         s_idx = cb->args[1];
23988 @@ -5019,6 +5045,8 @@ static int inet6_dump_ifinfo(struct sk_b
23989                 hlist_for_each_entry_rcu(dev, head, index_hlist) {
23990                         if (idx < s_idx)
23991                                 goto cont;
23992 +                       if (!v6_dev_in_nx_info(dev, nxi))
23993 +                               goto cont;
23994                         idev = __in6_dev_get(dev);
23995                         if (!idev)
23996                                 goto cont;
23997 diff -NurpP --minimal linux-4.4.111/net/ipv6/af_inet6.c linux-4.4.111-vs2.3.9.5/net/ipv6/af_inet6.c
23998 --- linux-4.4.111/net/ipv6/af_inet6.c   2018-01-11 07:57:55.000000000 +0000
23999 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/af_inet6.c 2018-01-09 16:36:34.000000000 +0000
24000 @@ -43,6 +43,8 @@
24001  #include <linux/netdevice.h>
24002  #include <linux/icmpv6.h>
24003  #include <linux/netfilter_ipv6.h>
24004 +#include <linux/vs_inet.h>
24005 +#include <linux/vs_inet6.h>
24006
24007  #include <net/ip.h>
24008  #include <net/ipv6.h>
24009 @@ -158,10 +160,13 @@ lookup_protocol:
24010         }
24011
24012         err = -EPERM;
24013 +       if ((protocol == IPPROTO_ICMPV6) &&
24014 +               nx_capable(CAP_NET_RAW, NXC_RAW_ICMP))
24015 +               goto override;
24016         if (sock->type == SOCK_RAW && !kern &&
24017             !ns_capable(net->user_ns, CAP_NET_RAW))
24018                 goto out_rcu_unlock;
24019 -
24020 +override:
24021         sock->ops = answer->ops;
24022         answer_prot = answer->prot;
24023         answer_flags = answer->flags;
24024 @@ -259,6 +264,7 @@ int inet6_bind(struct socket *sock, stru
24025         struct inet_sock *inet = inet_sk(sk);
24026         struct ipv6_pinfo *np = inet6_sk(sk);
24027         struct net *net = sock_net(sk);
24028 +       struct nx_v6_sock_addr nsa;
24029         __be32 v4addr = 0;
24030         unsigned short snum;
24031         int addr_type = 0;
24032 @@ -274,6 +280,10 @@ int inet6_bind(struct socket *sock, stru
24033         if (addr->sin6_family != AF_INET6)
24034                 return -EAFNOSUPPORT;
24035
24036 +       err = v6_map_sock_addr(inet, addr, &nsa);
24037 +       if (err)
24038 +               return err;
24039 +
24040         addr_type = ipv6_addr_type(&addr->sin6_addr);
24041         if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
24042                 return -EINVAL;
24043 @@ -314,6 +324,10 @@ int inet6_bind(struct socket *sock, stru
24044                         err = -EADDRNOTAVAIL;
24045                         goto out;
24046                 }
24047 +               if (!v4_addr_in_nx_info(sk->sk_nx_info, v4addr, NXA_MASK_BIND)) {
24048 +                       err = -EADDRNOTAVAIL;
24049 +                       goto out;
24050 +               }
24051         } else {
24052                 if (addr_type != IPV6_ADDR_ANY) {
24053                         struct net_device *dev = NULL;
24054 @@ -340,6 +354,11 @@ int inet6_bind(struct socket *sock, stru
24055                                 }
24056                         }
24057
24058 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, &addr->sin6_addr, -1)) {
24059 +                               err = -EADDRNOTAVAIL;
24060 +                               goto out_unlock;
24061 +                       }
24062 +
24063                         /* ipv4 addr of the socket is invalid.  Only the
24064                          * unspecified and mapped address have a v4 equivalent.
24065                          */
24066 @@ -357,6 +376,9 @@ int inet6_bind(struct socket *sock, stru
24067                 }
24068         }
24069
24070 +       /* what's that for? */
24071 +       v6_set_sock_addr(inet, &nsa);
24072 +
24073         inet->inet_rcv_saddr = v4addr;
24074         inet->inet_saddr = v4addr;
24075
24076 @@ -461,9 +483,11 @@ int inet6_getname(struct socket *sock, s
24077                         return -ENOTCONN;
24078                 sin->sin6_port = inet->inet_dport;
24079                 sin->sin6_addr = sk->sk_v6_daddr;
24080 +               /* FIXME: remap lback? */
24081                 if (np->sndflow)
24082                         sin->sin6_flowinfo = np->flow_label;
24083         } else {
24084 +               /* FIXME: remap lback? */
24085                 if (ipv6_addr_any(&sk->sk_v6_rcv_saddr))
24086                         sin->sin6_addr = np->saddr;
24087                 else
24088 diff -NurpP --minimal linux-4.4.111/net/ipv6/datagram.c linux-4.4.111-vs2.3.9.5/net/ipv6/datagram.c
24089 --- linux-4.4.111/net/ipv6/datagram.c   2018-01-11 07:57:55.000000000 +0000
24090 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/datagram.c 2018-01-09 16:36:34.000000000 +0000
24091 @@ -733,7 +733,7 @@ int ip6_datagram_send_ctl(struct net *ne
24092
24093                         rcu_read_lock();
24094                         if (fl6->flowi6_oif) {
24095 -                               dev = dev_get_by_index_rcu(net, fl6->flowi6_oif);
24096 +                               dev = dev_get_by_index_real_rcu(net, fl6->flowi6_oif);
24097                                 if (!dev) {
24098                                         rcu_read_unlock();
24099                                         return -ENODEV;
24100 diff -NurpP --minimal linux-4.4.111/net/ipv6/fib6_rules.c linux-4.4.111-vs2.3.9.5/net/ipv6/fib6_rules.c
24101 --- linux-4.4.111/net/ipv6/fib6_rules.c 2018-01-11 07:57:55.000000000 +0000
24102 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/fib6_rules.c       2018-01-09 16:36:34.000000000 +0000
24103 @@ -97,7 +97,7 @@ static int fib6_rule_action(struct fib_r
24104                                                ip6_dst_idev(&rt->dst)->dev,
24105                                                &flp6->daddr,
24106                                                rt6_flags2srcprefs(flags),
24107 -                                              &saddr))
24108 +                                              &saddr, NULL))
24109                                 goto again;
24110                         if (!ipv6_prefix_equal(&saddr, &r->src.addr,
24111                                                r->src.plen))
24112 diff -NurpP --minimal linux-4.4.111/net/ipv6/inet6_hashtables.c linux-4.4.111-vs2.3.9.5/net/ipv6/inet6_hashtables.c
24113 --- linux-4.4.111/net/ipv6/inet6_hashtables.c   2016-07-05 04:15:14.000000000 +0000
24114 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/inet6_hashtables.c 2018-01-09 16:36:34.000000000 +0000
24115 @@ -16,6 +16,7 @@
24116
24117  #include <linux/module.h>
24118  #include <linux/random.h>
24119 +#include <linux/vs_inet6.h>
24120
24121  #include <net/inet_connection_sock.h>
24122  #include <net/inet_hashtables.h>
24123 @@ -66,7 +67,6 @@ struct sock *__inet6_lookup_established(
24124         unsigned int slot = hash & hashinfo->ehash_mask;
24125         struct inet_ehash_bucket *head = &hashinfo->ehash[slot];
24126
24127 -
24128         rcu_read_lock();
24129  begin:
24130         sk_nulls_for_each_rcu(sk, node, &head->chain) {
24131 @@ -108,6 +108,9 @@ static inline int compute_score(struct s
24132                         if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, daddr))
24133                                 return -1;
24134                         score++;
24135 +               } else {
24136 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, daddr, -1))
24137 +                               return -1;
24138                 }
24139                 if (sk->sk_bound_dev_if) {
24140                         if (sk->sk_bound_dev_if != dif)
24141 diff -NurpP --minimal linux-4.4.111/net/ipv6/ip6_fib.c linux-4.4.111-vs2.3.9.5/net/ipv6/ip6_fib.c
24142 --- linux-4.4.111/net/ipv6/ip6_fib.c    2018-01-11 07:57:55.000000000 +0000
24143 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/ip6_fib.c  2018-01-09 16:36:34.000000000 +0000
24144 @@ -1968,6 +1968,7 @@ static int ipv6_route_seq_show(struct se
24145         struct rt6_info *rt = v;
24146         struct ipv6_route_iter *iter = seq->private;
24147
24148 +       /* FIXME: check for network context? */
24149         seq_printf(seq, "%pi6 %02x ", &rt->rt6i_dst.addr, rt->rt6i_dst.plen);
24150
24151  #ifdef CONFIG_IPV6_SUBTREES
24152 diff -NurpP --minimal linux-4.4.111/net/ipv6/ip6_output.c linux-4.4.111-vs2.3.9.5/net/ipv6/ip6_output.c
24153 --- linux-4.4.111/net/ipv6/ip6_output.c 2018-01-11 07:57:55.000000000 +0000
24154 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/ip6_output.c       2018-01-09 16:36:34.000000000 +0000
24155 @@ -941,7 +941,8 @@ static int ip6_dst_lookup_tail(struct ne
24156                 rt = (*dst)->error ? NULL : (struct rt6_info *)*dst;
24157                 err = ip6_route_get_saddr(net, rt, &fl6->daddr,
24158                                           sk ? inet6_sk(sk)->srcprefs : 0,
24159 -                                         &fl6->saddr);
24160 +                                         &fl6->saddr,
24161 +                                         sk ? sk->sk_nx_info : NULL);
24162                 if (err)
24163                         goto out_err_release;
24164
24165 diff -NurpP --minimal linux-4.4.111/net/ipv6/ndisc.c linux-4.4.111-vs2.3.9.5/net/ipv6/ndisc.c
24166 --- linux-4.4.111/net/ipv6/ndisc.c      2016-07-05 04:15:14.000000000 +0000
24167 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/ndisc.c    2018-01-09 16:36:34.000000000 +0000
24168 @@ -501,7 +501,7 @@ void ndisc_send_na(struct net_device *de
24169         } else {
24170                 if (ipv6_dev_get_saddr(dev_net(dev), dev, daddr,
24171                                        inet6_sk(dev_net(dev)->ipv6.ndisc_sk)->srcprefs,
24172 -                                      &tmpaddr))
24173 +                                      &tmpaddr, NULL))
24174                         return;
24175                 src_addr = &tmpaddr;
24176         }
24177 diff -NurpP --minimal linux-4.4.111/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c linux-4.4.111-vs2.3.9.5/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c
24178 --- linux-4.4.111/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c   2016-07-05 04:15:14.000000000 +0000
24179 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c 2018-01-09 17:04:44.000000000 +0000
24180 @@ -35,7 +35,7 @@ nf_nat_masquerade_ipv6(struct sk_buff *s
24181                             ctinfo == IP_CT_RELATED_REPLY));
24182
24183         if (ipv6_dev_get_saddr(nf_ct_net(ct), out,
24184 -                              &ipv6_hdr(skb)->daddr, 0, &src) < 0)
24185 +                              &ipv6_hdr(skb)->daddr, 0, &src, NULL) < 0)
24186                 return NF_DROP;
24187
24188         nfct_nat(ct)->masq_index = out->ifindex;
24189 diff -NurpP --minimal linux-4.4.111/net/ipv6/raw.c linux-4.4.111-vs2.3.9.5/net/ipv6/raw.c
24190 --- linux-4.4.111/net/ipv6/raw.c        2018-01-11 07:57:55.000000000 +0000
24191 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/raw.c      2018-01-09 16:36:34.000000000 +0000
24192 @@ -30,6 +30,7 @@
24193  #include <linux/icmpv6.h>
24194  #include <linux/netfilter.h>
24195  #include <linux/netfilter_ipv6.h>
24196 +#include <linux/vs_inet6.h>
24197  #include <linux/skbuff.h>
24198  #include <linux/compat.h>
24199  #include <linux/uaccess.h>
24200 @@ -291,6 +292,13 @@ static int rawv6_bind(struct sock *sk, s
24201                                 goto out_unlock;
24202                 }
24203
24204 +               if (!v6_addr_in_nx_info(sk->sk_nx_info, &addr->sin6_addr, -1)) {
24205 +                       err = -EADDRNOTAVAIL;
24206 +                       if (dev)
24207 +                               dev_put(dev);
24208 +                       goto out;
24209 +               }
24210 +
24211                 /* ipv4 addr of the socket is invalid.  Only the
24212                  * unspecified and mapped address have a v4 equivalent.
24213                  */
24214 diff -NurpP --minimal linux-4.4.111/net/ipv6/route.c linux-4.4.111-vs2.3.9.5/net/ipv6/route.c
24215 --- linux-4.4.111/net/ipv6/route.c      2018-01-11 07:57:55.000000000 +0000
24216 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/route.c    2018-01-09 17:03:24.000000000 +0000
24217 @@ -62,6 +62,7 @@
24218  #include <net/lwtunnel.h>
24219  #include <net/ip_tunnels.h>
24220  #include <net/l3mdev.h>
24221 +#include <linux/vs_inet6.h>
24222
24223  #include <asm/uaccess.h>
24224
24225 @@ -2545,16 +2546,18 @@ int ip6_route_get_saddr(struct net *net,
24226                         struct rt6_info *rt,
24227                         const struct in6_addr *daddr,
24228                         unsigned int prefs,
24229 -                       struct in6_addr *saddr)
24230 +                       struct in6_addr *saddr,
24231 +                       struct nx_info *nxi)
24232  {
24233         struct inet6_dev *idev =
24234                 rt ? ip6_dst_idev((struct dst_entry *)rt) : NULL;
24235         int err = 0;
24236 -       if (rt && rt->rt6i_prefsrc.plen)
24237 +       if (rt && rt->rt6i_prefsrc.plen && (!nxi ||
24238 +           v6_addr_in_nx_info(nxi, &rt->rt6i_prefsrc.addr, NXA_TYPE_ADDR)))
24239                 *saddr = rt->rt6i_prefsrc.addr;
24240         else
24241                 err = ipv6_dev_get_saddr(net, idev ? idev->dev : NULL,
24242 -                                        daddr, prefs, saddr);
24243 +                                        daddr, prefs, saddr, nxi);
24244         return err;
24245  }
24246
24247 @@ -3168,7 +3171,8 @@ static int rt6_fill_node(struct net *net
24248                                 goto nla_put_failure;
24249         } else if (dst) {
24250                 struct in6_addr saddr_buf;
24251 -               if (ip6_route_get_saddr(net, rt, dst, 0, &saddr_buf) == 0 &&
24252 +               if (ip6_route_get_saddr(net, rt, dst, 0, &saddr_buf,
24253 +                   (skb->sk ? skb->sk->sk_nx_info : NULL)) == 0 &&
24254                     nla_put_in6_addr(skb, RTA_PREFSRC, &saddr_buf))
24255                         goto nla_put_failure;
24256         }
24257 diff -NurpP --minimal linux-4.4.111/net/ipv6/tcp_ipv6.c linux-4.4.111-vs2.3.9.5/net/ipv6/tcp_ipv6.c
24258 --- linux-4.4.111/net/ipv6/tcp_ipv6.c   2018-01-11 07:57:55.000000000 +0000
24259 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/tcp_ipv6.c 2018-01-09 16:36:34.000000000 +0000
24260 @@ -69,6 +69,7 @@
24261
24262  #include <linux/crypto.h>
24263  #include <linux/scatterlist.h>
24264 +#include <linux/vs_inet6.h>
24265
24266  static void    tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb);
24267  static void    tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
24268 @@ -150,11 +151,18 @@ static int tcp_v6_connect(struct sock *s
24269          */
24270
24271         if (ipv6_addr_any(&usin->sin6_addr)) {
24272 -               if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
24273 -                       ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
24274 -                                              &usin->sin6_addr);
24275 -               else
24276 -                       usin->sin6_addr = in6addr_loopback;
24277 +               struct nx_info *nxi =  sk->sk_nx_info;
24278 +
24279 +               if (nxi && nx_info_has_v6(nxi))
24280 +                       /* FIXME: remap lback? */
24281 +                       usin->sin6_addr = nxi->v6.ip;
24282 +               else {
24283 +                       if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
24284 +                               ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
24285 +                                                      &usin->sin6_addr);
24286 +                       else
24287 +                               usin->sin6_addr = in6addr_loopback;
24288 +               }
24289         }
24290
24291         addr_type = ipv6_addr_type(&usin->sin6_addr);
24292 diff -NurpP --minimal linux-4.4.111/net/ipv6/udp.c linux-4.4.111-vs2.3.9.5/net/ipv6/udp.c
24293 --- linux-4.4.111/net/ipv6/udp.c        2018-01-11 07:57:55.000000000 +0000
24294 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/udp.c      2018-01-09 16:36:34.000000000 +0000
24295 @@ -47,6 +47,7 @@
24296  #include <net/xfrm.h>
24297  #include <net/inet6_hashtables.h>
24298  #include <net/busy_poll.h>
24299 +#include <linux/vs_inet6.h>
24300
24301  #include <linux/proc_fs.h>
24302  #include <linux/seq_file.h>
24303 @@ -76,32 +77,60 @@ static u32 udp6_ehashfn(const struct net
24304                                udp_ipv6_hash_secret + net_hash_mix(net));
24305  }
24306
24307 -int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
24308 +int ipv6_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
24309  {
24310 +       const struct in6_addr *sk1_rcv_saddr6 = inet6_rcv_saddr(sk1);
24311         const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
24312 +       __be32 sk1_rcv_saddr = sk1->sk_rcv_saddr;
24313 +       __be32 sk2_rcv_saddr = sk2->sk_rcv_saddr;
24314         int sk2_ipv6only = inet_v6_ipv6only(sk2);
24315 -       int addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
24316 +       int addr_type1 = ipv6_addr_type(sk1_rcv_saddr6);
24317         int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED;
24318
24319         /* if both are mapped, treat as IPv4 */
24320 -       if (addr_type == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED)
24321 -               return (!sk2_ipv6only &&
24322 -                       (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr ||
24323 -                         sk->sk_rcv_saddr == sk2->sk_rcv_saddr));
24324 +       if (addr_type1 == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) {
24325 +               if (!sk2_ipv6only &&
24326 +                       (!sk1->sk_rcv_saddr || !sk2->sk_rcv_saddr ||
24327 +                         sk1->sk_rcv_saddr == sk2->sk_rcv_saddr))
24328 +                       goto vs_v4;
24329 +               else
24330 +                       return 0;
24331 +       }
24332
24333         if (addr_type2 == IPV6_ADDR_ANY &&
24334 -           !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
24335 -               return 1;
24336 +           !(sk2_ipv6only && addr_type1 == IPV6_ADDR_MAPPED))
24337 +               goto vs;
24338
24339 -       if (addr_type == IPV6_ADDR_ANY &&
24340 -           !(ipv6_only_sock(sk) && addr_type2 == IPV6_ADDR_MAPPED))
24341 -               return 1;
24342 +       if (addr_type1 == IPV6_ADDR_ANY &&
24343 +           !(ipv6_only_sock(sk1) && addr_type2 == IPV6_ADDR_MAPPED))
24344 +               goto vs;
24345
24346         if (sk2_rcv_saddr6 &&
24347 -           ipv6_addr_equal(&sk->sk_v6_rcv_saddr, sk2_rcv_saddr6))
24348 -               return 1;
24349 +           ipv6_addr_equal(&sk1->sk_v6_rcv_saddr, sk2_rcv_saddr6))
24350 +               goto vs;
24351
24352         return 0;
24353 +
24354 +vs_v4:
24355 +       if (!sk1_rcv_saddr && !sk2_rcv_saddr)
24356 +               return nx_v4_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
24357 +       if (!sk2_rcv_saddr)
24358 +               return v4_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr, -1);
24359 +       if (!sk1_rcv_saddr)
24360 +               return v4_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr, -1);
24361 +       return 1;
24362 +vs:
24363 +       if (addr_type2 == IPV6_ADDR_ANY && addr_type1 == IPV6_ADDR_ANY)
24364 +               return nx_v6_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
24365 +       else if (addr_type2 == IPV6_ADDR_ANY)
24366 +               return v6_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr6, -1);
24367 +       else if (addr_type1 == IPV6_ADDR_ANY) {
24368 +               if (addr_type2 == IPV6_ADDR_MAPPED)
24369 +                       return nx_v4_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
24370 +               else
24371 +                       return v6_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr6, -1);
24372 +       }
24373 +       return 1;
24374  }
24375
24376  static u32 udp6_portaddr_hash(const struct net *net,
24377 @@ -162,6 +191,10 @@ static inline int compute_score(struct s
24378                 if (inet->inet_dport != sport)
24379                         return -1;
24380                 score++;
24381 +               } else {
24382 +                       /* block non nx_info ips */
24383 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, daddr, -1))
24384 +                               return -1;
24385         }
24386
24387         if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
24388 diff -NurpP --minimal linux-4.4.111/net/ipv6/xfrm6_policy.c linux-4.4.111-vs2.3.9.5/net/ipv6/xfrm6_policy.c
24389 --- linux-4.4.111/net/ipv6/xfrm6_policy.c       2016-07-05 04:15:14.000000000 +0000
24390 +++ linux-4.4.111-vs2.3.9.5/net/ipv6/xfrm6_policy.c     2018-01-09 16:36:34.000000000 +0000
24391 @@ -64,7 +64,8 @@ static int xfrm6_get_saddr(struct net *n
24392                 return -EHOSTUNREACH;
24393
24394         dev = ip6_dst_idev(dst)->dev;
24395 -       ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6, 0, &saddr->in6);
24396 +       ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6,
24397 +               0, &saddr->in6, NULL);
24398         dst_release(dst);
24399         return 0;
24400  }
24401 diff -NurpP --minimal linux-4.4.111/net/netfilter/ipvs/ip_vs_xmit.c linux-4.4.111-vs2.3.9.5/net/netfilter/ipvs/ip_vs_xmit.c
24402 --- linux-4.4.111/net/netfilter/ipvs/ip_vs_xmit.c       2016-07-05 04:15:15.000000000 +0000
24403 +++ linux-4.4.111-vs2.3.9.5/net/netfilter/ipvs/ip_vs_xmit.c     2018-01-09 16:36:34.000000000 +0000
24404 @@ -381,7 +381,7 @@ __ip_vs_route_output_v6(struct net *net,
24405                 return dst;
24406         if (ipv6_addr_any(&fl6.saddr) &&
24407             ipv6_dev_get_saddr(net, ip6_dst_idev(dst)->dev,
24408 -                              &fl6.daddr, 0, &fl6.saddr) < 0)
24409 +                              &fl6.daddr, 0, &fl6.saddr, NULL) < 0)
24410                 goto out_err;
24411         if (do_xfrm) {
24412                 dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
24413 diff -NurpP --minimal linux-4.4.111/net/netlink/af_netlink.c linux-4.4.111-vs2.3.9.5/net/netlink/af_netlink.c
24414 --- linux-4.4.111/net/netlink/af_netlink.c      2018-01-11 07:57:56.000000000 +0000
24415 +++ linux-4.4.111-vs2.3.9.5/net/netlink/af_netlink.c    2018-01-09 16:36:34.000000000 +0000
24416 @@ -62,6 +62,8 @@
24417  #include <asm/cacheflush.h>
24418  #include <linux/hash.h>
24419  #include <linux/genetlink.h>
24420 +#include <linux/vs_context.h>
24421 +#include <linux/vs_network.h>
24422
24423  #include <net/net_namespace.h>
24424  #include <net/sock.h>
24425 @@ -2460,7 +2462,8 @@ static void *__netlink_seq_next(struct s
24426                         if (err)
24427                                 return ERR_PTR(err);
24428                 }
24429 -       } while (sock_net(&nlk->sk) != seq_file_net(seq));
24430 +       } while ((sock_net(&nlk->sk) != seq_file_net(seq)) ||
24431 +               !nx_check(nlk->sk.sk_nid, VS_WATCH_P | VS_IDENT));
24432
24433         return nlk;
24434  }
24435 diff -NurpP --minimal linux-4.4.111/net/socket.c linux-4.4.111-vs2.3.9.5/net/socket.c
24436 --- linux-4.4.111/net/socket.c  2018-01-11 07:57:56.000000000 +0000
24437 +++ linux-4.4.111-vs2.3.9.5/net/socket.c        2018-01-09 16:36:34.000000000 +0000
24438 @@ -99,10 +99,12 @@
24439
24440  #include <net/sock.h>
24441  #include <linux/netfilter.h>
24442 +#include <linux/vs_socket.h>
24443 +#include <linux/vs_inet.h>
24444 +#include <linux/vs_inet6.h>
24445
24446  #include <linux/if_tun.h>
24447  #include <linux/ipv6_route.h>
24448 -#include <linux/route.h>
24449  #include <linux/sockios.h>
24450  #include <linux/atalk.h>
24451  #include <net/busy_poll.h>
24452 @@ -608,8 +610,24 @@ EXPORT_SYMBOL(__sock_tx_timestamp);
24453
24454  static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
24455  {
24456 -       int ret = sock->ops->sendmsg(sock, msg, msg_data_left(msg));
24457 -       BUG_ON(ret == -EIOCBQUEUED);
24458 +       size_t size = msg_data_left(msg);
24459 +       int ret = sock->ops->sendmsg(sock, msg, size);
24460 +#if 0
24461 +       if (sock->sk) {
24462 +               if (!ret)
24463 +                       vx_sock_fail(sock->sk, size);
24464 +               else
24465 +                       vx_sock_send(sock->sk, size);
24466 +       }
24467 +#endif
24468 +       vxdprintk(VXD_CBIT(net, 7),
24469 +               "sock_sendmsg_nosec: %p[%p,%p,%p;%d/%d]:%zu/%zu",
24470 +               sock, sock->sk,
24471 +               (sock->sk)?sock->sk->sk_nx_info:0,
24472 +               (sock->sk)?sock->sk->sk_vx_info:0,
24473 +               (sock->sk)?sock->sk->sk_xid:0,
24474 +               (sock->sk)?sock->sk->sk_nid:0,
24475 +               size, msg_data_left(msg));
24476         return ret;
24477  }
24478
24479 @@ -1100,6 +1118,13 @@ int __sock_create(struct net *net, int f
24480         if (type < 0 || type >= SOCK_MAX)
24481                 return -EINVAL;
24482
24483 +       if (!nx_check(0, VS_ADMIN)) {
24484 +               if (family == PF_INET && !current_nx_info_has_v4())
24485 +                       return -EAFNOSUPPORT;
24486 +               if (family == PF_INET6 && !current_nx_info_has_v6())
24487 +                       return -EAFNOSUPPORT;
24488 +       }
24489 +
24490         /* Compatibility.
24491
24492            This uglymoron is moved from INET layer to here to avoid
24493 @@ -1234,6 +1259,7 @@ SYSCALL_DEFINE3(socket, int, family, int
24494         if (retval < 0)
24495                 goto out;
24496
24497 +       set_bit(SOCK_USER_SOCKET, &sock->flags);
24498         retval = sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK));
24499         if (retval < 0)
24500                 goto out_release;
24501 @@ -1275,10 +1301,12 @@ SYSCALL_DEFINE4(socketpair, int, family,
24502         err = sock_create(family, type, protocol, &sock1);
24503         if (err < 0)
24504                 goto out;
24505 +       set_bit(SOCK_USER_SOCKET, &sock1->flags);
24506
24507         err = sock_create(family, type, protocol, &sock2);
24508         if (err < 0)
24509                 goto out_release_1;
24510 +       set_bit(SOCK_USER_SOCKET, &sock2->flags);
24511
24512         err = sock1->ops->socketpair(sock1, sock2);
24513         if (err < 0)
24514 diff -NurpP --minimal linux-4.4.111/net/sunrpc/auth.c linux-4.4.111-vs2.3.9.5/net/sunrpc/auth.c
24515 --- linux-4.4.111/net/sunrpc/auth.c     2015-10-29 09:21:46.000000000 +0000
24516 +++ linux-4.4.111-vs2.3.9.5/net/sunrpc/auth.c   2018-01-09 16:36:34.000000000 +0000
24517 @@ -15,6 +15,7 @@
24518  #include <linux/sunrpc/clnt.h>
24519  #include <linux/sunrpc/gss_api.h>
24520  #include <linux/spinlock.h>
24521 +#include <linux/vs_tag.h>
24522
24523  #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
24524  # define RPCDBG_FACILITY       RPCDBG_AUTH
24525 @@ -630,6 +631,7 @@ rpcauth_lookupcred(struct rpc_auth *auth
24526         memset(&acred, 0, sizeof(acred));
24527         acred.uid = cred->fsuid;
24528         acred.gid = cred->fsgid;
24529 +       acred.tag = make_ktag(&init_user_ns, dx_current_tag());
24530         acred.group_info = cred->group_info;
24531         ret = auth->au_ops->lookup_cred(auth, &acred, flags);
24532         return ret;
24533 @@ -669,6 +671,7 @@ rpcauth_bind_root_cred(struct rpc_task *
24534         struct auth_cred acred = {
24535                 .uid = GLOBAL_ROOT_UID,
24536                 .gid = GLOBAL_ROOT_GID,
24537 +               .tag = KTAGT_INIT(dx_current_tag()),
24538         };
24539
24540         dprintk("RPC: %5u looking up %s cred\n",
24541 diff -NurpP --minimal linux-4.4.111/net/sunrpc/auth_unix.c linux-4.4.111-vs2.3.9.5/net/sunrpc/auth_unix.c
24542 --- linux-4.4.111/net/sunrpc/auth_unix.c        2016-07-05 04:12:45.000000000 +0000
24543 +++ linux-4.4.111-vs2.3.9.5/net/sunrpc/auth_unix.c      2018-01-09 16:36:34.000000000 +0000
24544 @@ -13,11 +13,13 @@
24545  #include <linux/sunrpc/clnt.h>
24546  #include <linux/sunrpc/auth.h>
24547  #include <linux/user_namespace.h>
24548 +#include <linux/vs_tag.h>
24549
24550  #define NFS_NGROUPS    16
24551
24552  struct unx_cred {
24553         struct rpc_cred         uc_base;
24554 +       ktag_t                  uc_tag;
24555         kgid_t                  uc_gid;
24556         kgid_t                  uc_gids[NFS_NGROUPS];
24557  };
24558 @@ -80,6 +82,7 @@ unx_create_cred(struct rpc_auth *auth, s
24559                 groups = NFS_NGROUPS;
24560
24561         cred->uc_gid = acred->gid;
24562 +       cred->uc_tag = acred->tag;
24563         for (i = 0; i < groups; i++)
24564                 cred->uc_gids[i] = GROUP_AT(acred->group_info, i);
24565         if (i < NFS_NGROUPS)
24566 @@ -121,7 +124,9 @@ unx_match(struct auth_cred *acred, struc
24567         unsigned int i;
24568
24569
24570 -       if (!uid_eq(cred->uc_uid, acred->uid) || !gid_eq(cred->uc_gid, acred->gid))
24571 +       if (!uid_eq(cred->uc_uid, acred->uid) ||
24572 +           !gid_eq(cred->uc_gid, acred->gid) ||
24573 +           !tag_eq(cred->uc_tag, acred->tag))
24574                 return 0;
24575
24576         if (acred->group_info != NULL)
24577 @@ -146,7 +151,7 @@ unx_marshal(struct rpc_task *task, __be3
24578         struct rpc_clnt *clnt = task->tk_client;
24579         struct unx_cred *cred = container_of(task->tk_rqstp->rq_cred, struct unx_cred, uc_base);
24580         __be32          *base, *hold;
24581 -       int             i;
24582 +       int             i, tag;
24583
24584         *p++ = htonl(RPC_AUTH_UNIX);
24585         base = p++;
24586 @@ -157,8 +162,11 @@ unx_marshal(struct rpc_task *task, __be3
24587          */
24588         p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
24589
24590 -       *p++ = htonl((u32) from_kuid(&init_user_ns, cred->uc_uid));
24591 -       *p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gid));
24592 +       tag = task->tk_client->cl_tag;
24593 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
24594 +               TAGINO_KUID(tag, cred->uc_uid, cred->uc_tag)));
24595 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
24596 +               TAGINO_KGID(tag, cred->uc_gid, cred->uc_tag)));
24597         hold = p++;
24598         for (i = 0; i < 16 && gid_valid(cred->uc_gids[i]); i++)
24599                 *p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gids[i]));
24600 diff -NurpP --minimal linux-4.4.111/net/sunrpc/clnt.c linux-4.4.111-vs2.3.9.5/net/sunrpc/clnt.c
24601 --- linux-4.4.111/net/sunrpc/clnt.c     2018-01-11 07:57:57.000000000 +0000
24602 +++ linux-4.4.111-vs2.3.9.5/net/sunrpc/clnt.c   2018-01-09 16:36:34.000000000 +0000
24603 @@ -31,6 +31,7 @@
24604  #include <linux/in.h>
24605  #include <linux/in6.h>
24606  #include <linux/un.h>
24607 +#include <linux/vs_cvirt.h>
24608
24609  #include <linux/sunrpc/clnt.h>
24610  #include <linux/sunrpc/addr.h>
24611 @@ -477,6 +478,9 @@ static struct rpc_clnt *rpc_create_xprt(
24612         if (!(args->flags & RPC_CLNT_CREATE_QUIET))
24613                 clnt->cl_chatty = 1;
24614
24615 +       /* TODO: handle RPC_CLNT_CREATE_TAGGED
24616 +       if (args->flags & RPC_CLNT_CREATE_TAGGED)
24617 +               clnt->cl_tag = 1; */
24618         return clnt;
24619  }
24620
24621 diff -NurpP --minimal linux-4.4.111/net/unix/af_unix.c linux-4.4.111-vs2.3.9.5/net/unix/af_unix.c
24622 --- linux-4.4.111/net/unix/af_unix.c    2018-01-11 07:57:57.000000000 +0000
24623 +++ linux-4.4.111-vs2.3.9.5/net/unix/af_unix.c  2018-01-09 16:36:34.000000000 +0000
24624 @@ -117,6 +117,8 @@
24625  #include <net/checksum.h>
24626  #include <linux/security.h>
24627  #include <linux/freezer.h>
24628 +#include <linux/vs_context.h>
24629 +#include <linux/vs_limit.h>
24630
24631  struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
24632  EXPORT_SYMBOL_GPL(unix_socket_table);
24633 @@ -282,6 +284,8 @@ static struct sock *__unix_find_socket_b
24634                 if (!net_eq(sock_net(s), net))
24635                         continue;
24636
24637 +               if (!nx_check(s->sk_nid, VS_WATCH_P | VS_IDENT))
24638 +                       continue;
24639                 if (u->addr->len == len &&
24640                     !memcmp(u->addr->name, sunname, len))
24641                         goto found;
24642 @@ -2741,6 +2745,8 @@ static struct sock *unix_from_bucket(str
24643         for (sk = sk_head(&unix_socket_table[bucket]); sk; sk = sk_next(sk)) {
24644                 if (sock_net(sk) != seq_file_net(seq))
24645                         continue;
24646 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24647 +                       continue;
24648                 if (++count == offset)
24649                         break;
24650         }
24651 @@ -2758,6 +2764,8 @@ static struct sock *unix_next_socket(str
24652                 sk = sk_next(sk);
24653                 if (!sk)
24654                         goto next_bucket;
24655 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24656 +                       continue;
24657                 if (sock_net(sk) == seq_file_net(seq))
24658                         return sk;
24659         }
24660 diff -NurpP --minimal linux-4.4.111/scripts/checksyscalls.sh linux-4.4.111-vs2.3.9.5/scripts/checksyscalls.sh
24661 --- linux-4.4.111/scripts/checksyscalls.sh      2015-10-29 09:21:46.000000000 +0000
24662 +++ linux-4.4.111-vs2.3.9.5/scripts/checksyscalls.sh    2018-01-09 16:36:34.000000000 +0000
24663 @@ -196,7 +196,6 @@ cat << EOF
24664  #define __IGNORE_afs_syscall
24665  #define __IGNORE_getpmsg
24666  #define __IGNORE_putpmsg
24667 -#define __IGNORE_vserver
24668  EOF
24669  }
24670
24671 diff -NurpP --minimal linux-4.4.111/security/commoncap.c linux-4.4.111-vs2.3.9.5/security/commoncap.c
24672 --- linux-4.4.111/security/commoncap.c  2018-01-11 07:57:57.000000000 +0000
24673 +++ linux-4.4.111-vs2.3.9.5/security/commoncap.c        2018-01-09 16:36:34.000000000 +0000
24674 @@ -71,6 +71,7 @@ static void warn_setuid_and_fcaps_mixed(
24675  int cap_capable(const struct cred *cred, struct user_namespace *targ_ns,
24676                 int cap, int audit)
24677  {
24678 +       struct vx_info *vxi = current_vx_info(); /* FIXME: get vxi from cred? */
24679         struct user_namespace *ns = targ_ns;
24680
24681         /* See if cred has the capability in the target user namespace
24682 @@ -79,8 +80,12 @@ int cap_capable(const struct cred *cred,
24683          */
24684         for (;;) {
24685                 /* Do we have the necessary capabilities? */
24686 -               if (ns == cred->user_ns)
24687 -                       return cap_raised(cred->cap_effective, cap) ? 0 : -EPERM;
24688 +               if (ns == cred->user_ns) {
24689 +                       if (vx_info_flags(vxi, VXF_STATE_SETUP, 0) &&
24690 +                           cap_raised(cred->cap_effective, cap))
24691 +                               return 0;
24692 +                       return vx_cap_raised(vxi, cred->cap_effective, cap) ? 0 : -EPERM;
24693 +               }
24694
24695                 /* Have we tried all of the parent namespaces? */
24696                 if (ns == &init_user_ns)
24697 @@ -664,7 +669,7 @@ int cap_inode_setxattr(struct dentry *de
24698
24699         if (!strncmp(name, XATTR_SECURITY_PREFIX,
24700                      sizeof(XATTR_SECURITY_PREFIX) - 1) &&
24701 -           !capable(CAP_SYS_ADMIN))
24702 +               !vx_capable(CAP_SYS_ADMIN, VXC_FS_SECURITY))
24703                 return -EPERM;
24704         return 0;
24705  }
24706 @@ -690,7 +695,7 @@ int cap_inode_removexattr(struct dentry
24707
24708         if (!strncmp(name, XATTR_SECURITY_PREFIX,
24709                      sizeof(XATTR_SECURITY_PREFIX) - 1) &&
24710 -           !capable(CAP_SYS_ADMIN))
24711 +               !vx_capable(CAP_SYS_ADMIN, VXC_FS_SECURITY))
24712                 return -EPERM;
24713         return 0;
24714  }
24715 diff -NurpP --minimal linux-4.4.111/security/selinux/hooks.c linux-4.4.111-vs2.3.9.5/security/selinux/hooks.c
24716 --- linux-4.4.111/security/selinux/hooks.c      2018-01-11 07:57:57.000000000 +0000
24717 +++ linux-4.4.111-vs2.3.9.5/security/selinux/hooks.c    2018-01-09 16:36:34.000000000 +0000
24718 @@ -67,7 +67,6 @@
24719  #include <linux/dccp.h>
24720  #include <linux/quota.h>
24721  #include <linux/un.h>          /* for Unix socket types */
24722 -#include <net/af_unix.h>       /* for Unix socket types */
24723  #include <linux/parser.h>
24724  #include <linux/nfs_mount.h>
24725  #include <net/ipv6.h>