kernel-vserver-2.3.patch

   1 diff -NurpP --minimal linux-4.9.76/Documentation/vserver/debug.txt linux-4.9.76-vs2.3.9.5/Documentation/vserver/debug.txt
   2 --- linux-4.9.76/Documentation/vserver/debug.txt        1970-01-01 00:00:00.000000000 +0000
   3 +++ linux-4.9.76-vs2.3.9.5/Documentation/vserver/debug.txt      2018-01-10 02:50:49.000000000 +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-4.9.76/arch/alpha/Kconfig linux-4.9.76-vs2.3.9.5/arch/alpha/Kconfig
 160 --- linux-4.9.76/arch/alpha/Kconfig     2016-12-11 19:17:54.000000000 +0000
 161 +++ linux-4.9.76-vs2.3.9.5/arch/alpha/Kconfig   2018-01-10 02:50:49.000000000 +0000
 162 @@ -743,6 +743,8 @@ 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-4.9.76/arch/alpha/kernel/systbls.S linux-4.9.76-vs2.3.9.5/arch/alpha/kernel/systbls.S
 172 --- linux-4.9.76/arch/alpha/kernel/systbls.S    2016-12-11 19:17:54.000000000 +0000
 173 +++ linux-4.9.76-vs2.3.9.5/arch/alpha/kernel/systbls.S  2018-01-10 02:50:49.000000000 +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-4.9.76/arch/alpha/kernel/traps.c linux-4.9.76-vs2.3.9.5/arch/alpha/kernel/traps.c
 184 --- linux-4.9.76/arch/alpha/kernel/traps.c      2016-12-11 19:17:54.000000000 +0000
 185 +++ linux-4.9.76-vs2.3.9.5/arch/alpha/kernel/traps.c    2018-01-10 02:50:49.000000000 +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-4.9.76/arch/arm/Kconfig linux-4.9.76-vs2.3.9.5/arch/arm/Kconfig
 197 --- linux-4.9.76/arch/arm/Kconfig       2016-12-11 19:17:54.000000000 +0000
 198 +++ linux-4.9.76-vs2.3.9.5/arch/arm/Kconfig     2018-01-10 02:50:49.000000000 +0000
 199 @@ -2199,6 +2199,8 @@ 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-4.9.76/arch/arm/kernel/calls.S linux-4.9.76-vs2.3.9.5/arch/arm/kernel/calls.S
 209 --- linux-4.9.76/arch/arm/kernel/calls.S        2016-12-11 19:17:54.000000000 +0000
 210 +++ linux-4.9.76-vs2.3.9.5/arch/arm/kernel/calls.S      2018-01-10 02:50:49.000000000 +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-4.9.76/arch/arm/kernel/traps.c linux-4.9.76-vs2.3.9.5/arch/arm/kernel/traps.c
 221 --- linux-4.9.76/arch/arm/kernel/traps.c        2018-01-13 21:28:37.000000000 +0000
 222 +++ linux-4.9.76-vs2.3.9.5/arch/arm/kernel/traps.c      2018-01-10 02:50:49.000000000 +0000
 223 @@ -278,8 +278,8 @@ 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-4.9.76/arch/cris/Kconfig linux-4.9.76-vs2.3.9.5/arch/cris/Kconfig
 235 --- linux-4.9.76/arch/cris/Kconfig      2016-12-11 19:17:54.000000000 +0000
 236 +++ linux-4.9.76-vs2.3.9.5/arch/cris/Kconfig    2018-01-10 02:50:49.000000000 +0000
 237 @@ -583,6 +583,8 @@ 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-4.9.76/arch/ia64/Kconfig linux-4.9.76-vs2.3.9.5/arch/ia64/Kconfig
 247 --- linux-4.9.76/arch/ia64/Kconfig      2016-12-11 19:17:54.000000000 +0000
 248 +++ linux-4.9.76-vs2.3.9.5/arch/ia64/Kconfig    2018-01-10 02:50:49.000000000 +0000
 249 @@ -602,6 +602,8 @@ 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-4.9.76/arch/ia64/kernel/entry.S linux-4.9.76-vs2.3.9.5/arch/ia64/kernel/entry.S
 259 --- linux-4.9.76/arch/ia64/kernel/entry.S       2016-12-11 19:17:54.000000000 +0000
 260 +++ linux-4.9.76-vs2.3.9.5/arch/ia64/kernel/entry.S     2018-01-10 02:50:49.000000000 +0000
 261 @@ -1697,7 +1697,7 @@ 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-4.9.76/arch/ia64/kernel/ptrace.c linux-4.9.76-vs2.3.9.5/arch/ia64/kernel/ptrace.c
 271 --- linux-4.9.76/arch/ia64/kernel/ptrace.c      2018-01-13 21:28:38.000000000 +0000
 272 +++ linux-4.9.76-vs2.3.9.5/arch/ia64/kernel/ptrace.c    2018-01-10 02:50:49.000000000 +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-4.9.76/arch/ia64/kernel/traps.c linux-4.9.76-vs2.3.9.5/arch/ia64/kernel/traps.c
 282 --- linux-4.9.76/arch/ia64/kernel/traps.c       2016-12-11 19:17:54.000000000 +0000
 283 +++ linux-4.9.76-vs2.3.9.5/arch/ia64/kernel/traps.c     2018-01-10 02:50:49.000000000 +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-4.9.76/arch/m32r/kernel/traps.c linux-4.9.76-vs2.3.9.5/arch/m32r/kernel/traps.c
 309 --- linux-4.9.76/arch/m32r/kernel/traps.c       2016-12-11 19:17:54.000000000 +0000
 310 +++ linux-4.9.76-vs2.3.9.5/arch/m32r/kernel/traps.c     2018-01-10 02:50:49.000000000 +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-4.9.76/arch/m68k/Kconfig linux-4.9.76-vs2.3.9.5/arch/m68k/Kconfig
 324 --- linux-4.9.76/arch/m68k/Kconfig      2016-12-11 19:17:54.000000000 +0000
 325 +++ linux-4.9.76-vs2.3.9.5/arch/m68k/Kconfig    2018-01-10 02:50:49.000000000 +0000
 326 @@ -163,6 +163,8 @@ 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-4.9.76/arch/mips/Kconfig linux-4.9.76-vs2.3.9.5/arch/mips/Kconfig
 336 --- linux-4.9.76/arch/mips/Kconfig      2018-01-13 21:28:38.000000000 +0000
 337 +++ linux-4.9.76-vs2.3.9.5/arch/mips/Kconfig    2018-01-10 02:50:49.000000000 +0000
 338 @@ -3189,6 +3189,8 @@ 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-4.9.76/arch/mips/kernel/ptrace.c linux-4.9.76-vs2.3.9.5/arch/mips/kernel/ptrace.c
 348 --- linux-4.9.76/arch/mips/kernel/ptrace.c      2018-01-13 21:28:38.000000000 +0000
 349 +++ linux-4.9.76-vs2.3.9.5/arch/mips/kernel/ptrace.c    2018-01-10 02:50:49.000000000 +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 @@ -687,6 +688,9 @@ 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-4.9.76/arch/mips/kernel/scall32-o32.S linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall32-o32.S
 369 --- linux-4.9.76/arch/mips/kernel/scall32-o32.S 2018-01-13 21:28:38.000000000 +0000
 370 +++ linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall32-o32.S       2018-01-10 02:50:49.000000000 +0000
 371 @@ -511,7 +511,7 @@ 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-4.9.76/arch/mips/kernel/scall64-64.S linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall64-64.S
 381 --- linux-4.9.76/arch/mips/kernel/scall64-64.S  2018-01-13 21:28:38.000000000 +0000
 382 +++ linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall64-64.S        2018-01-10 02:50:49.000000000 +0000
 383 @@ -348,7 +348,7 @@ 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-4.9.76/arch/mips/kernel/scall64-n32.S linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall64-n32.S
 393 --- linux-4.9.76/arch/mips/kernel/scall64-n32.S 2018-01-13 21:28:38.000000000 +0000
 394 +++ linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall64-n32.S       2018-01-10 02:50:49.000000000 +0000
 395 @@ -343,7 +343,7 @@ 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-4.9.76/arch/mips/kernel/scall64-o32.S linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall64-o32.S
 405 --- linux-4.9.76/arch/mips/kernel/scall64-o32.S 2018-01-13 21:28:38.000000000 +0000
 406 +++ linux-4.9.76-vs2.3.9.5/arch/mips/kernel/scall64-o32.S       2018-01-10 02:50:49.000000000 +0000
 407 @@ -499,7 +499,7 @@ 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-4.9.76/arch/mips/kernel/traps.c linux-4.9.76-vs2.3.9.5/arch/mips/kernel/traps.c
 417 --- linux-4.9.76/arch/mips/kernel/traps.c       2018-01-13 21:28:38.000000000 +0000
 418 +++ linux-4.9.76-vs2.3.9.5/arch/mips/kernel/traps.c     2018-01-10 02:50:49.000000000 +0000
 419 @@ -360,9 +360,10 @@ 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-4.9.76/arch/parisc/Kconfig linux-4.9.76-vs2.3.9.5/arch/parisc/Kconfig
 434 --- linux-4.9.76/arch/parisc/Kconfig    2016-12-11 19:17:54.000000000 +0000
 435 +++ linux-4.9.76-vs2.3.9.5/arch/parisc/Kconfig  2018-01-10 02:50:49.000000000 +0000
 436 @@ -348,6 +348,8 @@ 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-4.9.76/arch/parisc/kernel/syscall_table.S linux-4.9.76-vs2.3.9.5/arch/parisc/kernel/syscall_table.S
 446 --- linux-4.9.76/arch/parisc/kernel/syscall_table.S     2018-01-13 21:28:38.000000000 +0000
 447 +++ linux-4.9.76-vs2.3.9.5/arch/parisc/kernel/syscall_table.S   2018-01-10 02:50:49.000000000 +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-4.9.76/arch/parisc/kernel/traps.c linux-4.9.76-vs2.3.9.5/arch/parisc/kernel/traps.c
 458 --- linux-4.9.76/arch/parisc/kernel/traps.c     2016-12-11 19:17:54.000000000 +0000
 459 +++ linux-4.9.76-vs2.3.9.5/arch/parisc/kernel/traps.c   2018-01-10 02:50:49.000000000 +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-4.9.76/arch/powerpc/Kconfig linux-4.9.76-vs2.3.9.5/arch/powerpc/Kconfig
 484 --- linux-4.9.76/arch/powerpc/Kconfig   2018-01-13 21:28:38.000000000 +0000
 485 +++ linux-4.9.76-vs2.3.9.5/arch/powerpc/Kconfig 2018-01-10 02:50:49.000000000 +0000
 486 @@ -1085,6 +1085,8 @@ 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-4.9.76/arch/powerpc/include/uapi/asm/unistd.h linux-4.9.76-vs2.3.9.5/arch/powerpc/include/uapi/asm/unistd.h
 496 --- linux-4.9.76/arch/powerpc/include/uapi/asm/unistd.h 2016-12-11 19:17:54.000000000 +0000
 497 +++ linux-4.9.76-vs2.3.9.5/arch/powerpc/include/uapi/asm/unistd.h       2018-01-10 02:50:49.000000000 +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-4.9.76/arch/s390/Kconfig linux-4.9.76-vs2.3.9.5/arch/s390/Kconfig
 508 --- linux-4.9.76/arch/s390/Kconfig      2018-01-13 21:28:39.000000000 +0000
 509 +++ linux-4.9.76-vs2.3.9.5/arch/s390/Kconfig    2018-01-10 02:50:49.000000000 +0000
 510 @@ -729,6 +729,8 @@ source "fs/Kconfig"
 511
 512  source "arch/s390/Kconfig.debug"
 513
 514 +source "kernel/vserver/Kconfig"
 515 +
 516  source "security/Kconfig"
 517
 518  source "crypto/Kconfig"
 519 diff -NurpP --minimal linux-4.9.76/arch/s390/include/asm/tlb.h linux-4.9.76-vs2.3.9.5/arch/s390/include/asm/tlb.h
 520 --- linux-4.9.76/arch/s390/include/asm/tlb.h    2016-12-11 19:17:54.000000000 +0000
 521 +++ linux-4.9.76-vs2.3.9.5/arch/s390/include/asm/tlb.h  2018-01-10 02:50:49.000000000 +0000
 522 @@ -24,6 +24,7 @@
 523  #include <linux/mm.h>
 524  #include <linux/pagemap.h>
 525  #include <linux/swap.h>
 526 +
 527  #include <asm/processor.h>
 528  #include <asm/pgalloc.h>
 529  #include <asm/tlbflush.h>
 530 diff -NurpP --minimal linux-4.9.76/arch/s390/include/uapi/asm/unistd.h linux-4.9.76-vs2.3.9.5/arch/s390/include/uapi/asm/unistd.h
 531 --- linux-4.9.76/arch/s390/include/uapi/asm/unistd.h    2016-12-11 19:17:54.000000000 +0000
 532 +++ linux-4.9.76-vs2.3.9.5/arch/s390/include/uapi/asm/unistd.h  2018-01-10 02:50:49.000000000 +0000
 533 @@ -200,7 +200,7 @@
 534  #define __NR_clock_gettime     260
 535  #define __NR_clock_getres      261
 536  #define __NR_clock_nanosleep   262
 537 -/* Number 263 is reserved for vserver */
 538 +#define __NR_vserver           263
 539  #define __NR_statfs64          265
 540  #define __NR_fstatfs64         266
 541  #define __NR_remap_file_pages  267
 542 diff -NurpP --minimal linux-4.9.76/arch/s390/kernel/ptrace.c linux-4.9.76-vs2.3.9.5/arch/s390/kernel/ptrace.c
 543 --- linux-4.9.76/arch/s390/kernel/ptrace.c      2018-01-13 21:28:39.000000000 +0000
 544 +++ linux-4.9.76-vs2.3.9.5/arch/s390/kernel/ptrace.c    2018-01-10 02:50:49.000000000 +0000
 545 @@ -21,6 +21,7 @@
 546  #include <linux/tracehook.h>
 547  #include <linux/seccomp.h>
 548  #include <linux/compat.h>
 549 +#include <linux/vs_base.h>
 550  #include <trace/syscall.h>
 551  #include <asm/segment.h>
 552  #include <asm/page.h>
 553 diff -NurpP --minimal linux-4.9.76/arch/s390/kernel/syscalls.S linux-4.9.76-vs2.3.9.5/arch/s390/kernel/syscalls.S
 554 --- linux-4.9.76/arch/s390/kernel/syscalls.S    2018-01-13 21:28:39.000000000 +0000
 555 +++ linux-4.9.76-vs2.3.9.5/arch/s390/kernel/syscalls.S  2018-01-10 02:50:49.000000000 +0000
 556 @@ -271,7 +271,7 @@ SYSCALL(sys_clock_settime,compat_sys_clo
 557  SYSCALL(sys_clock_gettime,compat_sys_clock_gettime)    /* 260 */
 558  SYSCALL(sys_clock_getres,compat_sys_clock_getres)
 559  SYSCALL(sys_clock_nanosleep,compat_sys_clock_nanosleep)
 560 -NI_SYSCALL                                             /* reserved for vserver */
 561 +SYSCALL(sys_vserver,sys_vserver,sys32_vserver)
 562  SYSCALL(sys_ni_syscall,compat_sys_s390_fadvise64_64)
 563  SYSCALL(sys_statfs64,compat_sys_statfs64)
 564  SYSCALL(sys_fstatfs64,compat_sys_fstatfs64)
 565 diff -NurpP --minimal linux-4.9.76/arch/sh/Kconfig linux-4.9.76-vs2.3.9.5/arch/sh/Kconfig
 566 --- linux-4.9.76/arch/sh/Kconfig        2016-12-11 19:17:54.000000000 +0000
 567 +++ linux-4.9.76-vs2.3.9.5/arch/sh/Kconfig      2018-01-10 02:50:49.000000000 +0000
 568 @@ -904,6 +904,8 @@ source "fs/Kconfig"
 569
 570  source "arch/sh/Kconfig.debug"
 571
 572 +source "kernel/vserver/Kconfig"
 573 +
 574  source "security/Kconfig"
 575
 576  source "crypto/Kconfig"
 577 diff -NurpP --minimal linux-4.9.76/arch/sh/kernel/irq.c linux-4.9.76-vs2.3.9.5/arch/sh/kernel/irq.c
 578 --- linux-4.9.76/arch/sh/kernel/irq.c   2016-12-11 19:17:54.000000000 +0000
 579 +++ linux-4.9.76-vs2.3.9.5/arch/sh/kernel/irq.c 2018-01-10 02:50:49.000000000 +0000
 580 @@ -14,6 +14,7 @@
 581  #include <linux/ftrace.h>
 582  #include <linux/delay.h>
 583  #include <linux/ratelimit.h>
 584 +// #include <linux/vs_context.h>
 585  #include <asm/processor.h>
 586  #include <asm/machvec.h>
 587  #include <asm/uaccess.h>
 588 diff -NurpP --minimal linux-4.9.76/arch/sparc/Kconfig linux-4.9.76-vs2.3.9.5/arch/sparc/Kconfig
 589 --- linux-4.9.76/arch/sparc/Kconfig     2018-01-13 21:28:39.000000000 +0000
 590 +++ linux-4.9.76-vs2.3.9.5/arch/sparc/Kconfig   2018-01-10 02:50:49.000000000 +0000
 591 @@ -580,6 +580,8 @@ source "fs/Kconfig"
 592
 593  source "arch/sparc/Kconfig.debug"
 594
 595 +source "kernel/vserver/Kconfig"
 596 +
 597  source "security/Kconfig"
 598
 599  source "crypto/Kconfig"
 600 diff -NurpP --minimal linux-4.9.76/arch/sparc/include/uapi/asm/unistd.h linux-4.9.76-vs2.3.9.5/arch/sparc/include/uapi/asm/unistd.h
 601 --- linux-4.9.76/arch/sparc/include/uapi/asm/unistd.h   2016-12-11 19:17:54.000000000 +0000
 602 +++ linux-4.9.76-vs2.3.9.5/arch/sparc/include/uapi/asm/unistd.h 2018-01-10 02:50:49.000000000 +0000
 603 @@ -332,7 +332,7 @@
 604  #define __NR_timer_getoverrun  264
 605  #define __NR_timer_delete      265
 606  #define __NR_timer_create      266
 607 -/* #define __NR_vserver                267 Reserved for VSERVER */
 608 +#define __NR_vserver           267
 609  #define __NR_io_setup          268
 610  #define __NR_io_destroy                269
 611  #define __NR_io_submit         270
 612 diff -NurpP --minimal linux-4.9.76/arch/sparc/kernel/systbls_32.S linux-4.9.76-vs2.3.9.5/arch/sparc/kernel/systbls_32.S
 613 --- linux-4.9.76/arch/sparc/kernel/systbls_32.S 2016-12-11 19:17:54.000000000 +0000
 614 +++ linux-4.9.76-vs2.3.9.5/arch/sparc/kernel/systbls_32.S       2018-01-10 02:50:49.000000000 +0000
 615 @@ -70,7 +70,7 @@ sys_call_table:
 616  /*250*/        .long sys_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_ni_syscall
 617  /*255*/        .long sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 618  /*260*/        .long sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
 619 -/*265*/        .long sys_timer_delete, sys_timer_create, sys_nis_syscall, sys_io_setup, sys_io_destroy
 620 +/*265*/        .long sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
 621  /*270*/        .long sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
 622  /*275*/        .long sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
 623  /*280*/        .long sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
 624 diff -NurpP --minimal linux-4.9.76/arch/sparc/kernel/systbls_64.S linux-4.9.76-vs2.3.9.5/arch/sparc/kernel/systbls_64.S
 625 --- linux-4.9.76/arch/sparc/kernel/systbls_64.S 2016-12-11 19:17:54.000000000 +0000
 626 +++ linux-4.9.76-vs2.3.9.5/arch/sparc/kernel/systbls_64.S       2018-01-10 02:50:49.000000000 +0000
 627 @@ -71,7 +71,7 @@ sys_call_table32:
 628  /*250*/        .word sys_mremap, compat_sys_sysctl, sys_getsid, sys_fdatasync, sys_nis_syscall
 629         .word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
 630  /*260*/        .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
 631 -       .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
 632 +       .word sys_timer_delete, compat_sys_timer_create, sys32_vserver, compat_sys_io_setup, sys_io_destroy
 633  /*270*/        .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
 634         .word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
 635  /*280*/        .word sys_tee, sys_add_key, sys_request_key, compat_sys_keyctl, compat_sys_openat
 636 @@ -152,7 +152,7 @@ sys_call_table:
 637  /*250*/        .word sys_64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nis_syscall
 638         .word sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 639  /*260*/        .word sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
 640 -       .word sys_timer_delete, sys_timer_create, sys_ni_syscall, sys_io_setup, sys_io_destroy
 641 +       .word sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
 642  /*270*/        .word sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
 643         .word sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
 644  /*280*/        .word sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
 645 diff -NurpP --minimal linux-4.9.76/arch/um/Kconfig.rest linux-4.9.76-vs2.3.9.5/arch/um/Kconfig.rest
 646 --- linux-4.9.76/arch/um/Kconfig.rest   2016-12-11 19:17:54.000000000 +0000
 647 +++ linux-4.9.76-vs2.3.9.5/arch/um/Kconfig.rest 2018-01-10 02:50:49.000000000 +0000
 648 @@ -12,6 +12,8 @@ source "arch/um/Kconfig.net"
 649
 650  source "fs/Kconfig"
 651
 652 +source "kernel/vserver/Kconfig"
 653 +
 654  source "security/Kconfig"
 655
 656  source "crypto/Kconfig"
 657 diff -NurpP --minimal linux-4.9.76/arch/x86/Kconfig linux-4.9.76-vs2.3.9.5/arch/x86/Kconfig
 658 --- linux-4.9.76/arch/x86/Kconfig       2018-01-13 21:28:39.000000000 +0000
 659 +++ linux-4.9.76-vs2.3.9.5/arch/x86/Kconfig     2018-01-10 02:50:49.000000000 +0000
 660 @@ -2763,6 +2763,8 @@ source "fs/Kconfig"
 661
 662  source "arch/x86/Kconfig.debug"
 663
 664 +source "kernel/vserver/Kconfig"
 665 +
 666  source "security/Kconfig"
 667
 668  source "crypto/Kconfig"
 669 diff -NurpP --minimal linux-4.9.76/arch/x86/entry/syscalls/syscall_32.tbl linux-4.9.76-vs2.3.9.5/arch/x86/entry/syscalls/syscall_32.tbl
 670 --- linux-4.9.76/arch/x86/entry/syscalls/syscall_32.tbl 2016-12-11 19:17:54.000000000 +0000
 671 +++ linux-4.9.76-vs2.3.9.5/arch/x86/entry/syscalls/syscall_32.tbl       2018-01-10 02:50:49.000000000 +0000
 672 @@ -279,7 +279,7 @@
 673  270    i386    tgkill                  sys_tgkill
 674  271    i386    utimes                  sys_utimes                      compat_sys_utimes
 675  272    i386    fadvise64_64            sys_fadvise64_64                sys32_fadvise64_64
 676 -273    i386    vserver
 677 +273    i386    vserver                 sys_vserver                     sys32_vserver
 678  274    i386    mbind                   sys_mbind
 679  275    i386    get_mempolicy           sys_get_mempolicy               compat_sys_get_mempolicy
 680  276    i386    set_mempolicy           sys_set_mempolicy
 681 diff -NurpP --minimal linux-4.9.76/arch/x86/entry/syscalls/syscall_64.tbl linux-4.9.76-vs2.3.9.5/arch/x86/entry/syscalls/syscall_64.tbl
 682 --- linux-4.9.76/arch/x86/entry/syscalls/syscall_64.tbl 2016-12-11 19:17:54.000000000 +0000
 683 +++ linux-4.9.76-vs2.3.9.5/arch/x86/entry/syscalls/syscall_64.tbl       2018-01-10 02:50:49.000000000 +0000
 684 @@ -242,7 +242,7 @@
 685  233    common  epoll_ctl               sys_epoll_ctl
 686  234    common  tgkill                  sys_tgkill
 687  235    common  utimes                  sys_utimes
 688 -236    64      vserver
 689 +236    64      vserver                 sys_vserver
 690  237    common  mbind                   sys_mbind
 691  238    common  set_mempolicy           sys_set_mempolicy
 692  239    common  get_mempolicy           sys_get_mempolicy
 693 diff -NurpP --minimal linux-4.9.76/block/ioprio.c linux-4.9.76-vs2.3.9.5/block/ioprio.c
 694 --- linux-4.9.76/block/ioprio.c 2016-12-11 19:17:54.000000000 +0000
 695 +++ linux-4.9.76-vs2.3.9.5/block/ioprio.c       2018-01-10 02:50:49.000000000 +0000
 696 @@ -28,6 +28,7 @@
 697  #include <linux/syscalls.h>
 698  #include <linux/security.h>
 699  #include <linux/pid_namespace.h>
 700 +#include <linux/vs_base.h>
 701
 702  int set_task_ioprio(struct task_struct *task, int ioprio)
 703  {
 704 @@ -105,6 +106,8 @@ SYSCALL_DEFINE3(ioprio_set, int, which,
 705                         else
 706                                 pgrp = find_vpid(who);
 707                         do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
 708 +                               if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
 709 +                                       continue;
 710                                 ret = set_task_ioprio(p, ioprio);
 711                                 if (ret)
 712                                         break;
 713 @@ -203,6 +206,8 @@ SYSCALL_DEFINE2(ioprio_get, int, which,
 714                         else
 715                                 pgrp = find_vpid(who);
 716                         do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
 717 +                               if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
 718 +                                       continue;
 719                                 tmpio = get_task_ioprio(p);
 720                                 if (tmpio < 0)
 721                                         continue;
 722 diff -NurpP --minimal linux-4.9.76/drivers/block/Kconfig linux-4.9.76-vs2.3.9.5/drivers/block/Kconfig
 723 --- linux-4.9.76/drivers/block/Kconfig  2016-12-11 19:17:54.000000000 +0000
 724 +++ linux-4.9.76-vs2.3.9.5/drivers/block/Kconfig        2018-01-10 02:50:49.000000000 +0000
 725 @@ -273,6 +273,13 @@ config BLK_DEV_CRYPTOLOOP
 726
 727  source "drivers/block/drbd/Kconfig"
 728
 729 +config BLK_DEV_VROOT
 730 +       tristate "Virtual Root device support"
 731 +       depends on QUOTACTL
 732 +       ---help---
 733 +         Saying Y here will allow you to use quota/fs ioctls on a shared
 734 +         partition within a virtual server without compromising security.
 735 +
 736  config BLK_DEV_NBD
 737         tristate "Network block device support"
 738         depends on NET
 739 diff -NurpP --minimal linux-4.9.76/drivers/block/Makefile linux-4.9.76-vs2.3.9.5/drivers/block/Makefile
 740 --- linux-4.9.76/drivers/block/Makefile 2016-12-11 19:17:54.000000000 +0000
 741 +++ linux-4.9.76-vs2.3.9.5/drivers/block/Makefile       2018-01-10 02:50:49.000000000 +0000
 742 @@ -31,6 +31,7 @@ obj-$(CONFIG_VIRTIO_BLK)      += virtio_blk.o
 743
 744  obj-$(CONFIG_BLK_DEV_SX8)      += sx8.o
 745  obj-$(CONFIG_BLK_DEV_HD)       += hd.o
 746 +obj-$(CONFIG_BLK_DEV_VROOT)    += vroot.o
 747
 748  obj-$(CONFIG_XEN_BLKDEV_FRONTEND)      += xen-blkfront.o
 749  obj-$(CONFIG_XEN_BLKDEV_BACKEND)       += xen-blkback/
 750 diff -NurpP --minimal linux-4.9.76/drivers/block/loop.c linux-4.9.76-vs2.3.9.5/drivers/block/loop.c
 751 --- linux-4.9.76/drivers/block/loop.c   2018-01-13 21:28:40.000000000 +0000
 752 +++ linux-4.9.76-vs2.3.9.5/drivers/block/loop.c 2018-01-10 02:50:49.000000000 +0000
 753 @@ -76,6 +76,7 @@
 754  #include <linux/miscdevice.h>
 755  #include <linux/falloc.h>
 756  #include <linux/uio.h>
 757 +#include <linux/vs_context.h>
 758  #include "loop.h"
 759
 760  #include <asm/uaccess.h>
 761 @@ -924,6 +925,7 @@ static int loop_set_fd(struct loop_devic
 762         lo->lo_blocksize = lo_blocksize;
 763         lo->lo_device = bdev;
 764         lo->lo_flags = lo_flags;
 765 +       lo->lo_xid = vx_current_xid();
 766         lo->lo_backing_file = file;
 767         lo->transfer = NULL;
 768         lo->ioctl = NULL;
 769 @@ -1044,6 +1046,7 @@ static int loop_clr_fd(struct loop_devic
 770         lo->lo_offset = 0;
 771         lo->lo_sizelimit = 0;
 772         lo->lo_encrypt_key_size = 0;
 773 +       lo->lo_xid = 0;
 774         memset(lo->lo_encrypt_key, 0, LO_KEY_SIZE);
 775         memset(lo->lo_crypt_name, 0, LO_NAME_SIZE);
 776         memset(lo->lo_file_name, 0, LO_NAME_SIZE);
 777 @@ -1090,7 +1093,7 @@ loop_set_status(struct loop_device *lo,
 778
 779         if (lo->lo_encrypt_key_size &&
 780             !uid_eq(lo->lo_key_owner, uid) &&
 781 -           !capable(CAP_SYS_ADMIN))
 782 +           !vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP))
 783                 return -EPERM;
 784         if (lo->lo_state != Lo_bound)
 785                 return -ENXIO;
 786 @@ -1191,7 +1194,8 @@ loop_get_status(struct loop_device *lo,
 787         memcpy(info->lo_crypt_name, lo->lo_crypt_name, LO_NAME_SIZE);
 788         info->lo_encrypt_type =
 789                 lo->lo_encryption ? lo->lo_encryption->number : 0;
 790 -       if (lo->lo_encrypt_key_size && capable(CAP_SYS_ADMIN)) {
 791 +       if (lo->lo_encrypt_key_size &&
 792 +               vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP)) {
 793                 info->lo_encrypt_key_size = lo->lo_encrypt_key_size;
 794                 memcpy(info->lo_encrypt_key, lo->lo_encrypt_key,
 795                        lo->lo_encrypt_key_size);
 796 @@ -1552,6 +1556,11 @@ static int lo_open(struct block_device *
 797                 goto out;
 798         }
 799
 800 +       if (!vx_check(lo->lo_xid, VS_IDENT|VS_HOSTID|VS_ADMIN_P)) {
 801 +               err = -EACCES;
 802 +               goto out;
 803 +       }
 804 +
 805         atomic_inc(&lo->lo_refcnt);
 806  out:
 807         mutex_unlock(&loop_index_mutex);
 808 diff -NurpP --minimal linux-4.9.76/drivers/block/loop.h linux-4.9.76-vs2.3.9.5/drivers/block/loop.h
 809 --- linux-4.9.76/drivers/block/loop.h   2016-12-11 19:17:54.000000000 +0000
 810 +++ linux-4.9.76-vs2.3.9.5/drivers/block/loop.h 2018-01-10 02:50:49.000000000 +0000
 811 @@ -43,6 +43,7 @@ struct loop_device {
 812         struct loop_func_table *lo_encryption;
 813         __u32           lo_init[2];
 814         kuid_t          lo_key_owner;   /* Who set the key */
 815 +       vxid_t          lo_xid;
 816         int             (*ioctl)(struct loop_device *, int cmd,
 817                                  unsigned long arg);
 818
 819 diff -NurpP --minimal linux-4.9.76/drivers/block/vroot.c linux-4.9.76-vs2.3.9.5/drivers/block/vroot.c
 820 --- linux-4.9.76/drivers/block/vroot.c  1970-01-01 00:00:00.000000000 +0000
 821 +++ linux-4.9.76-vs2.3.9.5/drivers/block/vroot.c        2018-01-13 22:00:41.000000000 +0000
 822 @@ -0,0 +1,291 @@
 823 +/*
 824 + *  linux/drivers/block/vroot.c
 825 + *
 826 + *  written by Herbert P?tzl, 9/11/2002
 827 + *  ported to 2.6.10 by Herbert P?tzl, 30/12/2004
 828 + *
 829 + *  based on the loop.c code by Theodore Ts'o.
 830 + *
 831 + * Copyright (C) 2002-2007 by Herbert P?tzl.
 832 + * Redistribution of this file is permitted under the
 833 + * GNU General Public License.
 834 + *
 835 + */
 836 +
 837 +#include <linux/module.h>
 838 +#include <linux/moduleparam.h>
 839 +#include <linux/file.h>
 840 +#include <linux/major.h>
 841 +#include <linux/blkdev.h>
 842 +#include <linux/slab.h>
 843 +
 844 +#include <linux/vroot.h>
 845 +#include <linux/vs_context.h>
 846 +
 847 +
 848 +static int max_vroot = 8;
 849 +
 850 +static struct vroot_device *vroot_dev;
 851 +static struct gendisk **disks;
 852 +
 853 +
 854 +static int vroot_set_dev(
 855 +       struct vroot_device *vr,
 856 +       struct block_device *bdev,
 857 +       unsigned int arg)
 858 +{
 859 +       struct block_device *real_bdev;
 860 +       struct file *file;
 861 +       struct inode *inode;
 862 +       int error;
 863 +
 864 +       error = -EBUSY;
 865 +       if (vr->vr_state != Vr_unbound)
 866 +               goto out;
 867 +
 868 +       error = -EBADF;
 869 +       file = fget(arg);
 870 +       if (!file)
 871 +               goto out;
 872 +
 873 +       error = -EINVAL;
 874 +       inode = file->f_path.dentry->d_inode;
 875 +
 876 +
 877 +       if (S_ISBLK(inode->i_mode)) {
 878 +               real_bdev = inode->i_bdev;
 879 +               vr->vr_device = real_bdev;
 880 +               __iget(real_bdev->bd_inode);
 881 +       } else
 882 +               goto out_fput;
 883 +
 884 +       vxdprintk(VXD_CBIT(misc, 0),
 885 +               "vroot[%d]_set_dev: dev=" VXF_DEV,
 886 +               vr->vr_number, VXD_DEV(real_bdev));
 887 +
 888 +       vr->vr_state = Vr_bound;
 889 +       error = 0;
 890 +
 891 + out_fput:
 892 +       fput(file);
 893 + out:
 894 +       return error;
 895 +}
 896 +
 897 +static int vroot_clr_dev(
 898 +       struct vroot_device *vr,
 899 +       struct block_device *bdev)
 900 +{
 901 +       struct block_device *real_bdev;
 902 +
 903 +       if (vr->vr_state != Vr_bound)
 904 +               return -ENXIO;
 905 +       if (vr->vr_refcnt > 1)  /* we needed one fd for the ioctl */
 906 +               return -EBUSY;
 907 +
 908 +       real_bdev = vr->vr_device;
 909 +
 910 +       vxdprintk(VXD_CBIT(misc, 0),
 911 +               "vroot[%d]_clr_dev: dev=" VXF_DEV,
 912 +               vr->vr_number, VXD_DEV(real_bdev));
 913 +
 914 +       bdput(real_bdev);
 915 +       vr->vr_state = Vr_unbound;
 916 +       vr->vr_device = NULL;
 917 +       return 0;
 918 +}
 919 +
 920 +
 921 +static int vr_ioctl(struct block_device *bdev, fmode_t mode,
 922 +       unsigned int cmd, unsigned long arg)
 923 +{
 924 +       struct vroot_device *vr = bdev->bd_disk->private_data;
 925 +       int err;
 926 +
 927 +       down(&vr->vr_ctl_mutex);
 928 +       switch (cmd) {
 929 +       case VROOT_SET_DEV:
 930 +               err = vroot_set_dev(vr, bdev, arg);
 931 +               break;
 932 +       case VROOT_CLR_DEV:
 933 +               err = vroot_clr_dev(vr, bdev);
 934 +               break;
 935 +       default:
 936 +               err = -EINVAL;
 937 +               break;
 938 +       }
 939 +       up(&vr->vr_ctl_mutex);
 940 +       return err;
 941 +}
 942 +
 943 +static int vr_open(struct block_device *bdev, fmode_t mode)
 944 +{
 945 +       struct vroot_device *vr = bdev->bd_disk->private_data;
 946 +
 947 +       down(&vr->vr_ctl_mutex);
 948 +       vr->vr_refcnt++;
 949 +       up(&vr->vr_ctl_mutex);
 950 +       return 0;
 951 +}
 952 +
 953 +static void vr_release(struct gendisk *disk, fmode_t mode)
 954 +{
 955 +       struct vroot_device *vr = disk->private_data;
 956 +
 957 +       down(&vr->vr_ctl_mutex);
 958 +       --vr->vr_refcnt;
 959 +       up(&vr->vr_ctl_mutex);
 960 +}
 961 +
 962 +static struct block_device_operations vr_fops = {
 963 +       .owner =        THIS_MODULE,
 964 +       .open =         vr_open,
 965 +       .release =      vr_release,
 966 +       .ioctl =        vr_ioctl,
 967 +};
 968 +
 969 +static blk_qc_t vroot_make_request(struct request_queue *q, struct bio *bio)
 970 +{
 971 +       printk("vroot_make_request %p, %p\n", q, bio);
 972 +       bio_io_error(bio);
 973 +       return BLK_QC_T_NONE;
 974 +}
 975 +
 976 +struct block_device *__vroot_get_real_bdev(struct block_device *bdev)
 977 +{
 978 +       struct inode *inode = bdev->bd_inode;
 979 +       struct vroot_device *vr;
 980 +       struct block_device *real_bdev;
 981 +       int minor = iminor(inode);
 982 +
 983 +       vr = &vroot_dev[minor];
 984 +       real_bdev = vr->vr_device;
 985 +
 986 +       vxdprintk(VXD_CBIT(misc, 0),
 987 +               "vroot[%d]_get_real_bdev: dev=" VXF_DEV,
 988 +               vr->vr_number, VXD_DEV(real_bdev));
 989 +
 990 +       if (vr->vr_state != Vr_bound)
 991 +               return ERR_PTR(-ENXIO);
 992 +
 993 +       __iget(real_bdev->bd_inode);
 994 +       return real_bdev;
 995 +}
 996 +
 997 +
 998 +
 999 +/*
1000 + * And now the modules code and kernel interface.
1001 + */
1002 +
1003 +module_param(max_vroot, int, 0);
1004 +
1005 +MODULE_PARM_DESC(max_vroot, "Maximum number of vroot devices (1-256)");
1006 +MODULE_LICENSE("GPL");
1007 +MODULE_ALIAS_BLOCKDEV_MAJOR(VROOT_MAJOR);
1008 +
1009 +MODULE_AUTHOR ("Herbert P?tzl");
1010 +MODULE_DESCRIPTION ("Virtual Root Device Mapper");
1011 +
1012 +
1013 +int __init vroot_init(void)
1014 +{
1015 +       int err, i;
1016 +
1017 +       if (max_vroot < 1 || max_vroot > 256) {
1018 +               max_vroot = MAX_VROOT_DEFAULT;
1019 +               printk(KERN_WARNING "vroot: invalid max_vroot "
1020 +                       "(must be between 1 and 256), "
1021 +                       "using default (%d)\n", max_vroot);
1022 +       }
1023 +
1024 +       if (register_blkdev(VROOT_MAJOR, "vroot"))
1025 +               return -EIO;
1026 +
1027 +       err = -ENOMEM;
1028 +       vroot_dev = kmalloc(max_vroot * sizeof(struct vroot_device), GFP_KERNEL);
1029 +       if (!vroot_dev)
1030 +               goto out_mem1;
1031 +       memset(vroot_dev, 0, max_vroot * sizeof(struct vroot_device));
1032 +
1033 +       disks = kmalloc(max_vroot * sizeof(struct gendisk *), GFP_KERNEL);
1034 +       if (!disks)
1035 +               goto out_mem2;
1036 +
1037 +       for (i = 0; i < max_vroot; i++) {
1038 +               disks[i] = alloc_disk(1);
1039 +               if (!disks[i])
1040 +                       goto out_mem3;
1041 +               disks[i]->queue = blk_alloc_queue(GFP_KERNEL);
1042 +               if (!disks[i]->queue)
1043 +                       goto out_mem3;
1044 +               blk_queue_make_request(disks[i]->queue, vroot_make_request);
1045 +       }
1046 +
1047 +       for (i = 0; i < max_vroot; i++) {
1048 +               struct vroot_device *vr = &vroot_dev[i];
1049 +               struct gendisk *disk = disks[i];
1050 +
1051 +               memset(vr, 0, sizeof(*vr));
1052 +               sema_init(&vr->vr_ctl_mutex, 1);
1053 +               vr->vr_number = i;
1054 +               disk->major = VROOT_MAJOR;
1055 +               disk->first_minor = i;
1056 +               disk->fops = &vr_fops;
1057 +               sprintf(disk->disk_name, "vroot%d", i);
1058 +               disk->private_data = vr;
1059 +       }
1060 +
1061 +       err = register_vroot_grb(&__vroot_get_real_bdev);
1062 +       if (err)
1063 +               goto out_mem3;
1064 +
1065 +       for (i = 0; i < max_vroot; i++)
1066 +               add_disk(disks[i]);
1067 +       printk(KERN_INFO "vroot: loaded (max %d devices)\n", max_vroot);
1068 +       return 0;
1069 +
1070 +out_mem3:
1071 +       while (i--)
1072 +               put_disk(disks[i]);
1073 +       kfree(disks);
1074 +out_mem2:
1075 +       kfree(vroot_dev);
1076 +out_mem1:
1077 +       unregister_blkdev(VROOT_MAJOR, "vroot");
1078 +       printk(KERN_ERR "vroot: ran out of memory\n");
1079 +       return err;
1080 +}
1081 +
1082 +void vroot_exit(void)
1083 +{
1084 +       int i;
1085 +
1086 +       if (unregister_vroot_grb(&__vroot_get_real_bdev))
1087 +               printk(KERN_WARNING "vroot: cannot unregister grb\n");
1088 +
1089 +       for (i = 0; i < max_vroot; i++) {
1090 +               del_gendisk(disks[i]);
1091 +               put_disk(disks[i]);
1092 +       }
1093 +       unregister_blkdev(VROOT_MAJOR, "vroot");
1094 +
1095 +       kfree(disks);
1096 +       kfree(vroot_dev);
1097 +}
1098 +
1099 +module_init(vroot_init);
1100 +module_exit(vroot_exit);
1101 +
1102 +#ifndef MODULE
1103 +
1104 +static int __init max_vroot_setup(char *str)
1105 +{
1106 +       max_vroot = simple_strtol(str, NULL, 0);
1107 +       return 1;
1108 +}
1109 +
1110 +__setup("max_vroot=", max_vroot_setup);
1111 +
1112 +#endif
1113 +
1114 diff -NurpP --minimal linux-4.9.76/drivers/md/dm-core.h linux-4.9.76-vs2.3.9.5/drivers/md/dm-core.h
1115 --- linux-4.9.76/drivers/md/dm-core.h   2018-01-13 21:28:44.000000000 +0000
1116 +++ linux-4.9.76-vs2.3.9.5/drivers/md/dm-core.h 2018-01-10 08:35:10.000000000 +0000
1117 @@ -52,6 +52,7 @@ struct mapped_device {
1118
1119         atomic_t holders;
1120         atomic_t open_count;
1121 +       vxid_t xid;
1122
1123         struct dm_target *immutable_target;
1124         struct target_type *immutable_target_type;
1125 diff -NurpP --minimal linux-4.9.76/drivers/md/dm-ioctl.c linux-4.9.76-vs2.3.9.5/drivers/md/dm-ioctl.c
1126 --- linux-4.9.76/drivers/md/dm-ioctl.c  2018-01-13 21:28:44.000000000 +0000
1127 +++ linux-4.9.76-vs2.3.9.5/drivers/md/dm-ioctl.c        2018-01-10 02:50:49.000000000 +0000
1128 @@ -16,6 +16,7 @@
1129  #include <linux/dm-ioctl.h>
1130  #include <linux/hdreg.h>
1131  #include <linux/compat.h>
1132 +#include <linux/vs_context.h>
1133
1134  #include <asm/uaccess.h>
1135
1136 @@ -114,7 +115,8 @@ static struct hash_cell *__get_name_cell
1137         unsigned int h = hash_str(str);
1138
1139         list_for_each_entry (hc, _name_buckets + h, name_list)
1140 -               if (!strcmp(hc->name, str)) {
1141 +               if (vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT) &&
1142 +                       !strcmp(hc->name, str)) {
1143                         dm_get(hc->md);
1144                         return hc;
1145                 }
1146 @@ -128,7 +130,8 @@ static struct hash_cell *__get_uuid_cell
1147         unsigned int h = hash_str(str);
1148
1149         list_for_each_entry (hc, _uuid_buckets + h, uuid_list)
1150 -               if (!strcmp(hc->uuid, str)) {
1151 +               if (vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT) &&
1152 +                       !strcmp(hc->uuid, str)) {
1153                         dm_get(hc->md);
1154                         return hc;
1155                 }
1156 @@ -139,13 +142,15 @@ static struct hash_cell *__get_uuid_cell
1157  static struct hash_cell *__get_dev_cell(uint64_t dev)
1158  {
1159         struct mapped_device *md;
1160 -       struct hash_cell *hc;
1161 +       struct hash_cell *hc = NULL;
1162
1163         md = dm_get_md(huge_decode_dev(dev));
1164         if (!md)
1165                 return NULL;
1166
1167 -       hc = dm_get_mdptr(md);
1168 +       if (vx_check(dm_get_xid(md), VS_WATCH_P | VS_IDENT))
1169 +               hc = dm_get_mdptr(md);
1170 +
1171         if (!hc) {
1172                 dm_put(md);
1173                 return NULL;
1174 @@ -467,6 +472,9 @@ typedef int (*ioctl_fn)(struct dm_ioctl
1175
1176  static int remove_all(struct dm_ioctl *param, size_t param_size)
1177  {
1178 +       if (!vx_check(0, VS_ADMIN))
1179 +               return -EPERM;
1180 +
1181         dm_hash_remove_all(true, !!(param->flags & DM_DEFERRED_REMOVE), false);
1182         param->data_size = 0;
1183         return 0;
1184 @@ -514,6 +522,8 @@ static int list_devices(struct dm_ioctl
1185          */
1186         for (i = 0; i < NUM_BUCKETS; i++) {
1187                 list_for_each_entry (hc, _name_buckets + i, name_list) {
1188 +                       if (!vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT))
1189 +                               continue;
1190                         needed += sizeof(struct dm_name_list);
1191                         needed += strlen(hc->name) + 1;
1192                         needed += ALIGN_MASK;
1193 @@ -537,6 +547,8 @@ static int list_devices(struct dm_ioctl
1194          */
1195         for (i = 0; i < NUM_BUCKETS; i++) {
1196                 list_for_each_entry (hc, _name_buckets + i, name_list) {
1197 +                       if (!vx_check(dm_get_xid(hc->md), VS_WATCH_P | VS_IDENT))
1198 +                               continue;
1199                         if (old_nl)
1200                                 old_nl->next = (uint32_t) ((void *) nl -
1201                                                            (void *) old_nl);
1202 @@ -1805,8 +1817,8 @@ static int ctl_ioctl(uint command, struc
1203         size_t input_param_size;
1204         struct dm_ioctl param_kernel;
1205
1206 -       /* only root can play with this */
1207 -       if (!capable(CAP_SYS_ADMIN))
1208 +       /* only root and certain contexts can play with this */
1209 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_MAPPER))
1210                 return -EACCES;
1211
1212         if (_IOC_TYPE(command) != DM_IOCTL)
1213 diff -NurpP --minimal linux-4.9.76/drivers/md/dm.c linux-4.9.76-vs2.3.9.5/drivers/md/dm.c
1214 --- linux-4.9.76/drivers/md/dm.c        2018-01-13 21:28:45.000000000 +0000
1215 +++ linux-4.9.76-vs2.3.9.5/drivers/md/dm.c      2018-01-10 08:32:35.000000000 +0000
1216 @@ -22,6 +22,7 @@
1217  #include <linux/wait.h>
1218  #include <linux/pr.h>
1219  #include <linux/vmalloc.h>
1220 +#include <linux/vs_base.h>
1221
1222  #define DM_MSG_PREFIX "core"
1223
1224 @@ -300,6 +301,7 @@ int dm_deleting_md(struct mapped_device
1225  static int dm_blk_open(struct block_device *bdev, fmode_t mode)
1226  {
1227         struct mapped_device *md;
1228 +       int ret = -ENXIO;
1229
1230         spin_lock(&_minor_lock);
1231
1232 @@ -308,17 +310,19 @@ static int dm_blk_open(struct block_devi
1233                 goto out;
1234
1235         if (test_bit(DMF_FREEING, &md->flags) ||
1236 -           dm_deleting_md(md)) {
1237 -               md = NULL;
1238 +           dm_deleting_md(md))
1239 +               goto out;
1240 +
1241 +       ret = -EACCES;
1242 +       if (!vx_check(md->xid, VS_IDENT|VS_HOSTID))
1243                 goto out;
1244 -       }
1245
1246         dm_get(md);
1247         atomic_inc(&md->open_count);
1248 +       ret = 0;
1249  out:
1250         spin_unlock(&_minor_lock);
1251 -
1252 -       return md ? 0 : -ENXIO;
1253 +       return ret;
1254  }
1255
1256  static void dm_blk_close(struct gendisk *disk, fmode_t mode)
1257 @@ -744,6 +748,14 @@ int dm_set_geometry(struct mapped_device
1258         return 0;
1259  }
1260
1261 +/*
1262 + * Get the xid associated with a dm device
1263 + */
1264 +vxid_t dm_get_xid(struct mapped_device *md)
1265 +{
1266 +       return md->xid;
1267 +}
1268 +
1269  /*-----------------------------------------------------------------
1270   * CRUD START:
1271   *   A more elegant soln is in the works that uses the queue
1272 @@ -1548,6 +1560,7 @@ static struct mapped_device *alloc_dev(i
1273         INIT_LIST_HEAD(&md->uevent_list);
1274         INIT_LIST_HEAD(&md->table_devices);
1275         spin_lock_init(&md->uevent_lock);
1276 +       md->xid = vx_current_xid();
1277
1278         md->queue = blk_alloc_queue_node(GFP_KERNEL, numa_node_id);
1279         if (!md->queue)
1280 diff -NurpP --minimal linux-4.9.76/drivers/md/dm.h linux-4.9.76-vs2.3.9.5/drivers/md/dm.h
1281 --- linux-4.9.76/drivers/md/dm.h        2016-12-11 19:17:54.000000000 +0000
1282 +++ linux-4.9.76-vs2.3.9.5/drivers/md/dm.h      2018-01-10 02:50:49.000000000 +0000
1283 @@ -45,6 +45,8 @@ struct dm_dev_internal {
1284  struct dm_table;
1285  struct dm_md_mempools;
1286
1287 +vxid_t dm_get_xid(struct mapped_device *md);
1288 +
1289  /*-----------------------------------------------------------------
1290   * Internal table functions.
1291   *---------------------------------------------------------------*/
1292 diff -NurpP --minimal linux-4.9.76/drivers/net/tun.c linux-4.9.76-vs2.3.9.5/drivers/net/tun.c
1293 --- linux-4.9.76/drivers/net/tun.c      2018-01-13 21:28:50.000000000 +0000
1294 +++ linux-4.9.76-vs2.3.9.5/drivers/net/tun.c    2018-01-10 02:50:49.000000000 +0000
1295 @@ -65,6 +65,7 @@
1296  #include <linux/nsproxy.h>
1297  #include <linux/virtio_net.h>
1298  #include <linux/rcupdate.h>
1299 +#include <linux/vs_network.h>
1300  #include <net/net_namespace.h>
1301  #include <net/netns/generic.h>
1302  #include <net/rtnetlink.h>
1303 @@ -194,6 +195,7 @@ struct tun_struct {
1304         unsigned int            flags;
1305         kuid_t                  owner;
1306         kgid_t                  group;
1307 +       vnid_t                  nid;
1308
1309         struct net_device       *dev;
1310         netdev_features_t       set_features;
1311 @@ -490,6 +492,7 @@ static inline bool tun_not_capable(struc
1312         return ((uid_valid(tun->owner) && !uid_eq(cred->euid, tun->owner)) ||
1313                   (gid_valid(tun->group) && !in_egroup_p(tun->group))) &&
1314                 !ns_capable(net->user_ns, CAP_NET_ADMIN);
1315 +               /* !cap_raised(current_cap(), CAP_NET_ADMIN) */
1316  }
1317
1318  static void tun_set_real_num_queues(struct tun_struct *tun)
1319 @@ -1549,6 +1552,7 @@ static void tun_setup(struct net_device
1320
1321         tun->owner = INVALID_UID;
1322         tun->group = INVALID_GID;
1323 +       tun->nid = nx_current_nid();
1324
1325         dev->ethtool_ops = &tun_ethtool_ops;
1326         dev->destructor = tun_free_netdev;
1327 @@ -1760,7 +1764,7 @@ static int tun_set_iff(struct net *net,
1328                 int queues = ifr->ifr_flags & IFF_MULTI_QUEUE ?
1329                              MAX_TAP_QUEUES : 1;
1330
1331 -               if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
1332 +               if (!nx_ns_capable(net->user_ns, CAP_NET_ADMIN, NXC_TUN_CREATE))
1333                         return -EPERM;
1334                 err = security_tun_dev_create();
1335                 if (err < 0)
1336 @@ -2125,6 +2129,16 @@ static long __tun_chr_ioctl(struct file
1337                           from_kgid(&init_user_ns, tun->group));
1338                 break;
1339
1340 +       case TUNSETNID:
1341 +               if (!capable(CAP_CONTEXT))
1342 +                       return -EPERM;
1343 +
1344 +               /* Set nid owner of the device */
1345 +               tun->nid = (vnid_t) arg;
1346 +
1347 +               tun_debug(KERN_INFO, tun, "nid owner set to %u\n", tun->nid);
1348 +               break;
1349 +
1350         case TUNSETLINK:
1351                 /* Only allow setting the type when the interface is down */
1352                 if (tun->dev->flags & IFF_UP) {
1353 diff -NurpP --minimal linux-4.9.76/drivers/scsi/cxgbi/libcxgbi.c linux-4.9.76-vs2.3.9.5/drivers/scsi/cxgbi/libcxgbi.c
1354 --- linux-4.9.76/drivers/scsi/cxgbi/libcxgbi.c  2016-12-11 19:17:54.000000000 +0000
1355 +++ linux-4.9.76-vs2.3.9.5/drivers/scsi/cxgbi/libcxgbi.c        2018-01-10 02:50:49.000000000 +0000
1356 @@ -772,7 +772,8 @@ static struct cxgbi_sock *cxgbi_check_ro
1357                 struct inet6_dev *idev = ip6_dst_idev((struct dst_entry *)rt);
1358
1359                 err = ipv6_dev_get_saddr(&init_net, idev ? idev->dev : NULL,
1360 -                                        &daddr6->sin6_addr, 0, &pref_saddr);
1361 +                                        &daddr6->sin6_addr, 0, &pref_saddr,
1362 +                                        NULL);
1363                 if (err) {
1364                         pr_info("failed to get source address to reach %pI6\n",
1365                                 &daddr6->sin6_addr);
1366 diff -NurpP --minimal linux-4.9.76/drivers/tty/sysrq.c linux-4.9.76-vs2.3.9.5/drivers/tty/sysrq.c
1367 --- linux-4.9.76/drivers/tty/sysrq.c    2018-01-13 21:28:54.000000000 +0000
1368 +++ linux-4.9.76-vs2.3.9.5/drivers/tty/sysrq.c  2018-01-10 02:50:49.000000000 +0000
1369 @@ -47,6 +47,7 @@
1370  #include <linux/syscalls.h>
1371  #include <linux/of.h>
1372  #include <linux/rcupdate.h>
1373 +#include <linux/vserver/debug.h>
1374
1375  #include <asm/ptrace.h>
1376  #include <asm/irq_regs.h>
1377 @@ -428,6 +429,21 @@ static struct sysrq_key_op sysrq_unrt_op
1378         .enable_mask    = SYSRQ_ENABLE_RTNICE,
1379  };
1380
1381 +
1382 +#ifdef CONFIG_VSERVER_DEBUG
1383 +static void sysrq_handle_vxinfo(int key)
1384 +{
1385 +       dump_vx_info_inactive((key == 'x') ? 0 : 1);
1386 +}
1387 +
1388 +static struct sysrq_key_op sysrq_showvxinfo_op = {
1389 +       .handler        = sysrq_handle_vxinfo,
1390 +       .help_msg       = "conteXt",
1391 +       .action_msg     = "Show Context Info",
1392 +       .enable_mask    = SYSRQ_ENABLE_DUMP,
1393 +};
1394 +#endif
1395 +
1396  /* Key Operations table and lock */
1397  static DEFINE_SPINLOCK(sysrq_key_table_lock);
1398
1399 @@ -484,7 +500,11 @@ static struct sysrq_key_op *sysrq_key_ta
1400         /* x: May be registered on mips for TLB dump */
1401         /* x: May be registered on ppc/powerpc for xmon */
1402         /* x: May be registered on sparc64 for global PMU dump */
1403 +#ifdef CONFIG_VSERVER_DEBUG
1404 +       &sysrq_showvxinfo_op,           /* x */
1405 +#else
1406         NULL,                           /* x */
1407 +#endif
1408         /* y: May be registered on sparc64 for global register dump */
1409         NULL,                           /* y */
1410         &sysrq_ftrace_dump_op,          /* z */
1411 @@ -499,6 +519,8 @@ static int sysrq_key_table_key2index(int
1412                 retval = key - '0';
1413         else if ((key >= 'a') && (key <= 'z'))
1414                 retval = key + 10 - 'a';
1415 +       else if ((key >= 'A') && (key <= 'Z'))
1416 +               retval = key + 10 - 'A';
1417         else
1418                 retval = -1;
1419         return retval;
1420 diff -NurpP --minimal linux-4.9.76/drivers/tty/tty_io.c linux-4.9.76-vs2.3.9.5/drivers/tty/tty_io.c
1421 --- linux-4.9.76/drivers/tty/tty_io.c   2016-12-11 19:17:54.000000000 +0000
1422 +++ linux-4.9.76-vs2.3.9.5/drivers/tty/tty_io.c 2018-01-10 02:50:49.000000000 +0000
1423 @@ -104,6 +104,7 @@
1424
1425  #include <linux/kmod.h>
1426  #include <linux/nsproxy.h>
1427 +#include <linux/vs_pid.h>
1428
1429  #undef TTY_DEBUG_HANGUP
1430  #ifdef TTY_DEBUG_HANGUP
1431 @@ -2286,7 +2287,8 @@ static int tiocsti(struct tty_struct *tt
1432         char ch, mbz = 0;
1433         struct tty_ldisc *ld;
1434
1435 -       if ((current->signal->tty != tty) && !capable(CAP_SYS_ADMIN))
1436 +       if (((current->signal->tty != tty) &&
1437 +               !vx_capable(CAP_SYS_ADMIN, VXC_TIOCSTI)))
1438                 return -EPERM;
1439         if (get_user(ch, p))
1440                 return -EFAULT;
1441 @@ -2601,6 +2603,7 @@ static int tiocspgrp(struct tty_struct *
1442                 return -ENOTTY;
1443         if (get_user(pgrp_nr, p))
1444                 return -EFAULT;
1445 +       pgrp_nr = vx_rmap_pid(pgrp_nr);
1446         if (pgrp_nr < 0)
1447                 return -EINVAL;
1448         rcu_read_lock();
1449 diff -NurpP --minimal linux-4.9.76/fs/attr.c linux-4.9.76-vs2.3.9.5/fs/attr.c
1450 --- linux-4.9.76/fs/attr.c      2016-12-11 19:17:54.000000000 +0000
1451 +++ linux-4.9.76-vs2.3.9.5/fs/attr.c    2018-01-10 02:50:49.000000000 +0000
1452 @@ -15,6 +15,9 @@
1453  #include <linux/security.h>
1454  #include <linux/evm.h>
1455  #include <linux/ima.h>
1456 +#include <linux/proc_fs.h>
1457 +#include <linux/devpts_fs.h>
1458 +#include <linux/vs_tag.h>
1459
1460  /**
1461   * setattr_prepare - check if attribute changes to a dentry are allowed
1462 @@ -90,6 +93,10 @@ kill_priv:
1463                         return error;
1464         }
1465
1466 +       /* check for inode tag permission */
1467 +       if (dx_permission(inode, MAY_WRITE))
1468 +               return -EACCES;
1469 +
1470         return 0;
1471  }
1472  EXPORT_SYMBOL(setattr_prepare);
1473 @@ -160,6 +167,8 @@ void setattr_copy(struct inode *inode, c
1474                 inode->i_uid = attr->ia_uid;
1475         if (ia_valid & ATTR_GID)
1476                 inode->i_gid = attr->ia_gid;
1477 +       if ((ia_valid & ATTR_TAG) && IS_TAGGED(inode))
1478 +               inode->i_tag = attr->ia_tag;
1479         if (ia_valid & ATTR_ATIME)
1480                 inode->i_atime = timespec_trunc(attr->ia_atime,
1481                                                 inode->i_sb->s_time_gran);
1482 @@ -210,7 +219,8 @@ int notify_change(struct dentry * dentry
1483
1484         WARN_ON_ONCE(!inode_is_locked(inode));
1485
1486 -       if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_TIMES_SET)) {
1487 +       if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
1488 +               ATTR_TAG | ATTR_TIMES_SET)) {
1489                 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1490                         return -EPERM;
1491         }
1492 diff -NurpP --minimal linux-4.9.76/fs/block_dev.c linux-4.9.76-vs2.3.9.5/fs/block_dev.c
1493 --- linux-4.9.76/fs/block_dev.c 2018-01-13 21:28:56.000000000 +0000
1494 +++ linux-4.9.76-vs2.3.9.5/fs/block_dev.c       2018-01-13 00:48:31.000000000 +0000
1495 @@ -31,6 +31,7 @@
1496  #include <linux/dax.h>
1497  #include <linux/badblocks.h>
1498  #include <linux/falloc.h>
1499 +#include <linux/vs_device.h>
1500  #include <asm/uaccess.h>
1501  #include "internal.h"
1502
1503 @@ -720,6 +721,7 @@ struct block_device *bdget(dev_t dev)
1504                 bdev->bd_invalidated = 0;
1505                 inode->i_mode = S_IFBLK;
1506                 inode->i_rdev = dev;
1507 +               inode->i_mdev = dev;
1508                 inode->i_bdev = bdev;
1509                 inode->i_data.a_ops = &def_blk_aops;
1510                 mapping_set_gfp_mask(&inode->i_data, GFP_USER);
1511 @@ -766,6 +768,11 @@ EXPORT_SYMBOL(bdput);
1512  static struct block_device *bd_acquire(struct inode *inode)
1513  {
1514         struct block_device *bdev;
1515 +       dev_t mdev;
1516 +
1517 +       if (!vs_map_blkdev(inode->i_rdev, &mdev, DATTR_OPEN))
1518 +               return NULL;
1519 +       inode->i_mdev = mdev;
1520
1521         spin_lock(&bdev_lock);
1522         bdev = inode->i_bdev;
1523 @@ -776,7 +783,7 @@ static struct block_device *bd_acquire(s
1524         }
1525         spin_unlock(&bdev_lock);
1526
1527 -       bdev = bdget(inode->i_rdev);
1528 +       bdev = bdget(mdev);
1529         if (bdev) {
1530                 spin_lock(&bdev_lock);
1531                 if (!inode->i_bdev) {
1532 diff -NurpP --minimal linux-4.9.76/fs/btrfs/ctree.h linux-4.9.76-vs2.3.9.5/fs/btrfs/ctree.h
1533 --- linux-4.9.76/fs/btrfs/ctree.h       2018-01-13 21:28:56.000000000 +0000
1534 +++ linux-4.9.76-vs2.3.9.5/fs/btrfs/ctree.h     2018-01-10 02:50:49.000000000 +0000
1535 @@ -1321,6 +1321,8 @@ static inline u32 BTRFS_MAX_XATTR_SIZE(c
1536  #define BTRFS_DEFAULT_COMMIT_INTERVAL  (30)
1537  #define BTRFS_DEFAULT_MAX_INLINE       (2048)
1538
1539 +#define BTRFS_MOUNT_TAGGED             (1 << 24)
1540 +
1541  #define btrfs_clear_opt(o, opt)                ((o) &= ~BTRFS_MOUNT_##opt)
1542  #define btrfs_set_opt(o, opt)          ((o) |= BTRFS_MOUNT_##opt)
1543  #define btrfs_raw_test_opt(o, opt)     ((o) & BTRFS_MOUNT_##opt)
1544 @@ -1668,6 +1670,7 @@ BTRFS_SETGET_FUNCS(inode_block_group, st
1545  BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
1546  BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
1547  BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
1548 +BTRFS_SETGET_FUNCS(inode_tag, struct btrfs_inode_item, tag, 16);
1549  BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
1550  BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
1551  BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
1552 @@ -1715,6 +1718,10 @@ BTRFS_SETGET_FUNCS(extent_flags, struct
1553
1554  BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32);
1555
1556 +#define BTRFS_INODE_IXUNLINK           (1 << 24)
1557 +#define BTRFS_INODE_BARRIER            (1 << 25)
1558 +#define BTRFS_INODE_COW                        (1 << 26)
1559 +
1560
1561  BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
1562
1563 @@ -3197,6 +3204,7 @@ int btrfs_ioctl_get_supported_features(v
1564  void btrfs_update_iflags(struct inode *inode);
1565  void btrfs_inherit_iflags(struct inode *inode, struct inode *dir);
1566  int btrfs_is_empty_uuid(u8 *uuid);
1567 +int btrfs_sync_flags(struct inode *inode, int, int);
1568  int btrfs_defrag_file(struct inode *inode, struct file *file,
1569                       struct btrfs_ioctl_defrag_range_args *range,
1570                       u64 newer_than, unsigned long max_pages);
1571 diff -NurpP --minimal linux-4.9.76/fs/btrfs/disk-io.c linux-4.9.76-vs2.3.9.5/fs/btrfs/disk-io.c
1572 --- linux-4.9.76/fs/btrfs/disk-io.c     2018-01-13 21:28:56.000000000 +0000
1573 +++ linux-4.9.76-vs2.3.9.5/fs/btrfs/disk-io.c   2018-01-13 05:55:56.000000000 +0000
1574 @@ -2850,6 +2850,9 @@ int open_ctree(struct super_block *sb,
1575                 goto fail_alloc;
1576         }
1577
1578 +       if (btrfs_test_opt(fs_info, TAGGED))
1579 +               sb->s_flags |= MS_TAGGED;
1580 +
1581         features = btrfs_super_incompat_flags(disk_super) &
1582                 ~BTRFS_FEATURE_INCOMPAT_SUPP;
1583         if (features) {
1584 diff -NurpP --minimal linux-4.9.76/fs/btrfs/inode.c linux-4.9.76-vs2.3.9.5/fs/btrfs/inode.c
1585 --- linux-4.9.76/fs/btrfs/inode.c       2018-01-13 21:28:56.000000000 +0000
1586 +++ linux-4.9.76-vs2.3.9.5/fs/btrfs/inode.c     2018-01-13 01:41:05.000000000 +0000
1587 @@ -43,6 +43,7 @@
1588  #include <linux/blkdev.h>
1589  #include <linux/posix_acl_xattr.h>
1590  #include <linux/uio.h>
1591 +#include <linux/vs_tag.h>
1592  #include "ctree.h"
1593  #include "disk-io.h"
1594  #include "transaction.h"
1595 @@ -3662,6 +3663,9 @@ static int btrfs_read_locked_inode(struc
1596         unsigned long ptr;
1597         int maybe_acls;
1598         u32 rdev;
1599 +       kuid_t kuid;
1600 +       kgid_t kgid;
1601 +       ktag_t ktag;
1602         int ret;
1603         bool filled = false;
1604         int first_xattr_slot;
1605 @@ -3694,8 +3698,14 @@ static int btrfs_read_locked_inode(struc
1606                                     struct btrfs_inode_item);
1607         inode->i_mode = btrfs_inode_mode(leaf, inode_item);
1608         set_nlink(inode, btrfs_inode_nlink(leaf, inode_item));
1609 -       i_uid_write(inode, btrfs_inode_uid(leaf, inode_item));
1610 -       i_gid_write(inode, btrfs_inode_gid(leaf, inode_item));
1611 +
1612 +       kuid = make_kuid(&init_user_ns, btrfs_inode_uid(leaf, inode_item));
1613 +       kgid = make_kgid(&init_user_ns, btrfs_inode_gid(leaf, inode_item));
1614 +       ktag = make_ktag(&init_user_ns, btrfs_inode_tag(leaf, inode_item));
1615 +
1616 +       inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
1617 +       inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
1618 +       inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, ktag);
1619         btrfs_i_size_write(inode, btrfs_inode_size(leaf, inode_item));
1620
1621         inode->i_atime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->atime);
1622 @@ -3850,11 +3860,18 @@ static void fill_inode_item(struct btrfs
1623                             struct inode *inode)
1624  {
1625         struct btrfs_map_token token;
1626 +       uid_t uid = from_kuid(&init_user_ns,
1627 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
1628 +       gid_t gid = from_kgid(&init_user_ns,
1629 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
1630
1631         btrfs_init_map_token(&token);
1632
1633 -       btrfs_set_token_inode_uid(leaf, item, i_uid_read(inode), &token);
1634 -       btrfs_set_token_inode_gid(leaf, item, i_gid_read(inode), &token);
1635 +       btrfs_set_token_inode_uid(leaf, item, uid, &token);
1636 +       btrfs_set_token_inode_gid(leaf, item, gid, &token);
1637 +#ifdef CONFIG_TAGGING_INTERN
1638 +       btrfs_set_token_inode_tag(leaf, item, i_tag_read(inode), &token);
1639 +#endif
1640         btrfs_set_token_inode_size(leaf, item, BTRFS_I(inode)->disk_i_size,
1641                                    &token);
1642         btrfs_set_token_inode_mode(leaf, item, inode->i_mode, &token);
1643 @@ -10613,6 +10630,7 @@ static const struct inode_operations btr
1644         .mknod          = btrfs_mknod,
1645         .listxattr      = btrfs_listxattr,
1646         .permission     = btrfs_permission,
1647 +       .sync_flags     = btrfs_sync_flags,
1648         .get_acl        = btrfs_get_acl,
1649         .set_acl        = btrfs_set_acl,
1650         .update_time    = btrfs_update_time,
1651 @@ -10621,6 +10639,7 @@ static const struct inode_operations btr
1652  static const struct inode_operations btrfs_dir_ro_inode_operations = {
1653         .lookup         = btrfs_lookup,
1654         .permission     = btrfs_permission,
1655 +       .sync_flags     = btrfs_sync_flags,
1656         .update_time    = btrfs_update_time,
1657  };
1658
1659 @@ -10686,6 +10705,7 @@ static const struct inode_operations btr
1660         .listxattr      = btrfs_listxattr,
1661         .permission     = btrfs_permission,
1662         .fiemap         = btrfs_fiemap,
1663 +       .sync_flags     = btrfs_sync_flags,
1664         .get_acl        = btrfs_get_acl,
1665         .set_acl        = btrfs_set_acl,
1666         .update_time    = btrfs_update_time,
1667 diff -NurpP --minimal linux-4.9.76/fs/btrfs/ioctl.c linux-4.9.76-vs2.3.9.5/fs/btrfs/ioctl.c
1668 --- linux-4.9.76/fs/btrfs/ioctl.c       2018-01-13 21:28:56.000000000 +0000
1669 +++ linux-4.9.76-vs2.3.9.5/fs/btrfs/ioctl.c     2018-01-10 02:50:49.000000000 +0000
1670 @@ -110,10 +110,13 @@ static unsigned int btrfs_flags_to_ioctl
1671  {
1672         unsigned int iflags = 0;
1673
1674 -       if (flags & BTRFS_INODE_SYNC)
1675 -               iflags |= FS_SYNC_FL;
1676         if (flags & BTRFS_INODE_IMMUTABLE)
1677                 iflags |= FS_IMMUTABLE_FL;
1678 +       if (flags & BTRFS_INODE_IXUNLINK)
1679 +               iflags |= FS_IXUNLINK_FL;
1680 +
1681 +       if (flags & BTRFS_INODE_SYNC)
1682 +               iflags |= FS_SYNC_FL;
1683         if (flags & BTRFS_INODE_APPEND)
1684                 iflags |= FS_APPEND_FL;
1685         if (flags & BTRFS_INODE_NODUMP)
1686 @@ -130,34 +133,84 @@ static unsigned int btrfs_flags_to_ioctl
1687         else if (flags & BTRFS_INODE_COMPRESS)
1688                 iflags |= FS_COMPR_FL;
1689
1690 +       if (flags & BTRFS_INODE_BARRIER)
1691 +               iflags |= FS_BARRIER_FL;
1692 +       if (flags & BTRFS_INODE_COW)
1693 +               iflags |= FS_COW_FL;
1694         return iflags;
1695  }
1696
1697  /*
1698 - * Update inode->i_flags based on the btrfs internal flags.
1699 + * Update inode->i_(v)flags based on the btrfs internal flags.
1700   */
1701  void btrfs_update_iflags(struct inode *inode)
1702  {
1703         struct btrfs_inode *ip = BTRFS_I(inode);
1704         unsigned int new_fl = 0;
1705
1706 -       if (ip->flags & BTRFS_INODE_SYNC)
1707 -               new_fl |= S_SYNC;
1708         if (ip->flags & BTRFS_INODE_IMMUTABLE)
1709                 new_fl |= S_IMMUTABLE;
1710 +       if (ip->flags & BTRFS_INODE_IXUNLINK)
1711 +               new_fl |= S_IXUNLINK;
1712 +
1713 +       if (ip->flags & BTRFS_INODE_SYNC)
1714 +               new_fl |= S_SYNC;
1715         if (ip->flags & BTRFS_INODE_APPEND)
1716                 new_fl |= S_APPEND;
1717         if (ip->flags & BTRFS_INODE_NOATIME)
1718                 new_fl |= S_NOATIME;
1719         if (ip->flags & BTRFS_INODE_DIRSYNC)
1720                 new_fl |= S_DIRSYNC;
1721 -
1722         set_mask_bits(&inode->i_flags,
1723 -                     S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME | S_DIRSYNC,
1724 +                     S_SYNC | S_APPEND | S_IMMUTABLE | S_IXUNLINK | S_NOATIME | S_DIRSYNC,
1725                       new_fl);
1726 +
1727 +       new_fl = 0;
1728 +       if (ip->flags & BTRFS_INODE_BARRIER)
1729 +               new_fl |= V_BARRIER;
1730 +       if (ip->flags & BTRFS_INODE_COW)
1731 +               new_fl |= V_COW;
1732 +
1733 +       set_mask_bits(&inode->i_vflags,
1734 +               V_BARRIER | V_COW, new_fl);
1735  }
1736
1737  /*
1738 + * Update btrfs internal flags from inode->i_(v)flags.
1739 + */
1740 +void btrfs_update_flags(struct inode *inode)
1741 +{
1742 +       struct btrfs_inode *ip = BTRFS_I(inode);
1743 +
1744 +       unsigned int flags = inode->i_flags;
1745 +       unsigned int vflags = inode->i_vflags;
1746 +
1747 +       ip->flags &= ~(BTRFS_INODE_SYNC | BTRFS_INODE_APPEND |
1748 +                       BTRFS_INODE_IMMUTABLE | BTRFS_INODE_IXUNLINK |
1749 +                       BTRFS_INODE_NOATIME | BTRFS_INODE_DIRSYNC |
1750 +                       BTRFS_INODE_BARRIER | BTRFS_INODE_COW);
1751 +
1752 +       if (flags & S_IMMUTABLE)
1753 +               ip->flags |= BTRFS_INODE_IMMUTABLE;
1754 +       if (flags & S_IXUNLINK)
1755 +               ip->flags |= BTRFS_INODE_IXUNLINK;
1756 +
1757 +       if (flags & S_SYNC)
1758 +               ip->flags |= BTRFS_INODE_SYNC;
1759 +       if (flags & S_APPEND)
1760 +               ip->flags |= BTRFS_INODE_APPEND;
1761 +       if (flags & S_NOATIME)
1762 +               ip->flags |= BTRFS_INODE_NOATIME;
1763 +       if (flags & S_DIRSYNC)
1764 +               ip->flags |= BTRFS_INODE_DIRSYNC;
1765 +
1766 +       if (vflags & V_BARRIER)
1767 +               ip->flags |= BTRFS_INODE_BARRIER;
1768 +       if (vflags & V_COW)
1769 +               ip->flags |= BTRFS_INODE_COW;
1770 + }
1771 +
1772 +/*
1773   * Inherit flags from the parent inode.
1774   *
1775   * Currently only the compression flags and the cow flags are inherited.
1776 @@ -170,6 +223,7 @@ void btrfs_inherit_iflags(struct inode *
1777                 return;
1778
1779         flags = BTRFS_I(dir)->flags;
1780 +       flags &= ~BTRFS_INODE_BARRIER;
1781
1782         if (flags & BTRFS_INODE_NOCOMPRESS) {
1783                 BTRFS_I(inode)->flags &= ~BTRFS_INODE_COMPRESS;
1784 @@ -188,6 +242,30 @@ void btrfs_inherit_iflags(struct inode *
1785         btrfs_update_iflags(inode);
1786  }
1787
1788 +int btrfs_sync_flags(struct inode *inode, int flags, int vflags)
1789 +{
1790 +       struct btrfs_inode *ip = BTRFS_I(inode);
1791 +       struct btrfs_root *root = ip->root;
1792 +       struct btrfs_trans_handle *trans;
1793 +       int ret;
1794 +
1795 +       trans = btrfs_join_transaction(root);
1796 +       BUG_ON(!trans);
1797 +
1798 +       inode->i_flags = flags;
1799 +       inode->i_vflags = vflags;
1800 +       btrfs_update_flags(inode);
1801 +
1802 +       ret = btrfs_update_inode(trans, root, inode);
1803 +       BUG_ON(ret);
1804 +
1805 +       btrfs_update_iflags(inode);
1806 +       inode->i_ctime = CURRENT_TIME;
1807 +       btrfs_end_transaction(trans, root);
1808 +
1809 +       return 0;
1810 +}
1811 +
1812  static int btrfs_ioctl_getflags(struct file *file, void __user *arg)
1813  {
1814         struct btrfs_inode *ip = BTRFS_I(file_inode(file));
1815 @@ -250,21 +328,27 @@ static int btrfs_ioctl_setflags(struct f
1816
1817         flags = btrfs_mask_flags(inode->i_mode, flags);
1818         oldflags = btrfs_flags_to_ioctl(ip->flags);
1819 -       if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
1820 +       if ((flags ^ oldflags) & (FS_APPEND_FL |
1821 +               FS_IMMUTABLE_FL | FS_IXUNLINK_FL)) {
1822                 if (!capable(CAP_LINUX_IMMUTABLE)) {
1823                         ret = -EPERM;
1824                         goto out_unlock;
1825                 }
1826         }
1827
1828 -       if (flags & FS_SYNC_FL)
1829 -               ip->flags |= BTRFS_INODE_SYNC;
1830 -       else
1831 -               ip->flags &= ~BTRFS_INODE_SYNC;
1832         if (flags & FS_IMMUTABLE_FL)
1833                 ip->flags |= BTRFS_INODE_IMMUTABLE;
1834         else
1835                 ip->flags &= ~BTRFS_INODE_IMMUTABLE;
1836 +       if (flags & FS_IXUNLINK_FL)
1837 +               ip->flags |= BTRFS_INODE_IXUNLINK;
1838 +       else
1839 +               ip->flags &= ~BTRFS_INODE_IXUNLINK;
1840 +
1841 +       if (flags & FS_SYNC_FL)
1842 +               ip->flags |= BTRFS_INODE_SYNC;
1843 +       else
1844 +               ip->flags &= ~BTRFS_INODE_SYNC;
1845         if (flags & FS_APPEND_FL)
1846                 ip->flags |= BTRFS_INODE_APPEND;
1847         else
1848 diff -NurpP --minimal linux-4.9.76/fs/btrfs/super.c linux-4.9.76-vs2.3.9.5/fs/btrfs/super.c
1849 --- linux-4.9.76/fs/btrfs/super.c       2018-01-13 21:28:56.000000000 +0000
1850 +++ linux-4.9.76-vs2.3.9.5/fs/btrfs/super.c     2018-01-13 05:51:52.000000000 +0000
1851 @@ -327,7 +327,7 @@ enum {
1852  #ifdef CONFIG_BTRFS_DEBUG
1853         Opt_fragment_data, Opt_fragment_metadata, Opt_fragment_all,
1854  #endif
1855 -       Opt_err,
1856 +       Opt_tag, Opt_notag, Opt_tagid, Opt_err,
1857  };
1858
1859  static const match_table_t tokens = {
1860 @@ -388,6 +388,9 @@ static const match_table_t tokens = {
1861         {Opt_fragment_metadata, "fragment=metadata"},
1862         {Opt_fragment_all, "fragment=all"},
1863  #endif
1864 +       {Opt_tag, "tag"},
1865 +       {Opt_notag, "notag"},
1866 +       {Opt_tagid, "tagid=%u"},
1867         {Opt_err, NULL},
1868  };
1869
1870 @@ -833,6 +836,22 @@ int btrfs_parse_options(struct btrfs_roo
1871                         btrfs_set_opt(info->mount_opt, FRAGMENT_DATA);
1872                         break;
1873  #endif
1874 +#ifndef CONFIG_TAGGING_NONE
1875 +               case Opt_tag:
1876 +                       printk(KERN_INFO "btrfs: use tagging\n");
1877 +                       btrfs_set_opt(info->mount_opt, TAGGED);
1878 +                       break;
1879 +               case Opt_notag:
1880 +                       printk(KERN_INFO "btrfs: disabled tagging\n");
1881 +                       btrfs_clear_opt(info->mount_opt, TAGGED);
1882 +                       break;
1883 +#endif
1884 +#ifdef CONFIG_PROPAGATE
1885 +               case Opt_tagid:
1886 +                       /* use args[0] */
1887 +                       btrfs_set_opt(info->mount_opt, TAGGED);
1888 +                       break;
1889 +#endif
1890                 case Opt_err:
1891                         btrfs_info(root->fs_info,
1892                                    "unrecognized mount option '%s'", p);
1893 @@ -1754,6 +1773,12 @@ static int btrfs_remount(struct super_bl
1894         btrfs_resize_thread_pool(fs_info,
1895                 fs_info->thread_pool_size, old_thread_pool_size);
1896
1897 +       if (btrfs_test_opt(fs_info, TAGGED) && !(sb->s_flags & MS_TAGGED)) {
1898 +               printk("btrfs: %s: tagging not permitted on remount.\n",
1899 +                       sb->s_id);
1900 +               return -EINVAL;
1901 +       }
1902 +
1903         if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
1904                 goto out;
1905
1906 diff -NurpP --minimal linux-4.9.76/fs/char_dev.c linux-4.9.76-vs2.3.9.5/fs/char_dev.c
1907 --- linux-4.9.76/fs/char_dev.c  2016-12-11 19:17:54.000000000 +0000
1908 +++ linux-4.9.76-vs2.3.9.5/fs/char_dev.c        2018-01-10 02:50:49.000000000 +0000
1909 @@ -21,6 +21,8 @@
1910  #include <linux/mutex.h>
1911  #include <linux/backing-dev.h>
1912  #include <linux/tty.h>
1913 +#include <linux/vs_context.h>
1914 +#include <linux/vs_device.h>
1915
1916  #include "internal.h"
1917
1918 @@ -354,14 +356,21 @@ static int chrdev_open(struct inode *ino
1919         struct cdev *p;
1920         struct cdev *new = NULL;
1921         int ret = 0;
1922 +       dev_t mdev;
1923 +
1924 +       if (!vs_map_chrdev(inode->i_rdev, &mdev, DATTR_OPEN))
1925 +               return -EPERM;
1926 +       inode->i_mdev = mdev;
1927
1928         spin_lock(&cdev_lock);
1929         p = inode->i_cdev;
1930         if (!p) {
1931                 struct kobject *kobj;
1932                 int idx;
1933 +
1934                 spin_unlock(&cdev_lock);
1935 -               kobj = kobj_lookup(cdev_map, inode->i_rdev, &idx);
1936 +
1937 +               kobj = kobj_lookup(cdev_map, mdev, &idx);
1938                 if (!kobj)
1939                         return -ENXIO;
1940                 new = container_of(kobj, struct cdev, kobj);
1941 diff -NurpP --minimal linux-4.9.76/fs/dcache.c linux-4.9.76-vs2.3.9.5/fs/dcache.c
1942 --- linux-4.9.76/fs/dcache.c    2018-01-13 21:28:56.000000000 +0000
1943 +++ linux-4.9.76-vs2.3.9.5/fs/dcache.c  2018-01-10 02:50:49.000000000 +0000
1944 @@ -39,6 +39,7 @@
1945  #include <linux/ratelimit.h>
1946  #include <linux/list_lru.h>
1947  #include <linux/kasan.h>
1948 +#include <linux/vs_limit.h>
1949
1950  #include "internal.h"
1951  #include "mount.h"
1952 @@ -680,6 +681,7 @@ static inline bool fast_dput(struct dent
1953                 spin_lock(&dentry->d_lock);
1954                 if (dentry->d_lockref.count > 1) {
1955                         dentry->d_lockref.count--;
1956 +                       vx_dentry_dec(dentry);
1957                         spin_unlock(&dentry->d_lock);
1958                         return 1;
1959                 }
1960 @@ -811,6 +813,7 @@ repeat:
1961         dentry_lru_add(dentry);
1962
1963         dentry->d_lockref.count--;
1964 +       vx_dentry_dec(dentry);
1965         spin_unlock(&dentry->d_lock);
1966         return;
1967
1968 @@ -828,6 +831,7 @@ EXPORT_SYMBOL(dput);
1969  static inline void __dget_dlock(struct dentry *dentry)
1970  {
1971         dentry->d_lockref.count++;
1972 +       vx_dentry_inc(dentry);
1973  }
1974
1975  static inline void __dget(struct dentry *dentry)
1976 @@ -840,6 +844,8 @@ struct dentry *dget_parent(struct dentry
1977         int gotref;
1978         struct dentry *ret;
1979
1980 +       vx_dentry_dec(dentry);
1981 +
1982         /*
1983          * Do optimistic parent lookup without any
1984          * locking.
1985 @@ -870,6 +876,7 @@ repeat:
1986         rcu_read_unlock();
1987         BUG_ON(!ret->d_lockref.count);
1988         ret->d_lockref.count++;
1989 +       vx_dentry_inc(ret);
1990         spin_unlock(&ret->d_lock);
1991         return ret;
1992  }
1993 @@ -1024,6 +1031,7 @@ static void shrink_dentry_list(struct li
1994                         parent = lock_parent(dentry);
1995                         if (dentry->d_lockref.count != 1) {
1996                                 dentry->d_lockref.count--;
1997 +                               vx_dentry_dec(dentry);
1998                                 spin_unlock(&dentry->d_lock);
1999                                 if (parent)
2000                                         spin_unlock(&parent->d_lock);
2001 @@ -1590,6 +1598,9 @@ struct dentry *__d_alloc(struct super_bl
2002         char *dname;
2003         int err;
2004
2005 +       if (!vx_dentry_avail(1))
2006 +               return NULL;
2007 +
2008         dentry = kmem_cache_alloc(dentry_cache, GFP_KERNEL);
2009         if (!dentry)
2010                 return NULL;
2011 @@ -1633,6 +1644,7 @@ struct dentry *__d_alloc(struct super_bl
2012
2013         dentry->d_lockref.count = 1;
2014         dentry->d_flags = 0;
2015 +       vx_dentry_inc(dentry);
2016         spin_lock_init(&dentry->d_lock);
2017         seqcount_init(&dentry->d_seq);
2018         dentry->d_inode = NULL;
2019 @@ -2282,6 +2294,7 @@ struct dentry *__d_lookup(const struct d
2020                         goto next;
2021
2022                 dentry->d_lockref.count++;
2023 +               vx_dentry_inc(dentry);
2024                 found = dentry;
2025                 spin_unlock(&dentry->d_lock);
2026                 break;
2027 @@ -3532,6 +3545,7 @@ static enum d_walk_ret d_genocide_kill(v
2028                 if (!(dentry->d_flags & DCACHE_GENOCIDE)) {
2029                         dentry->d_flags |= DCACHE_GENOCIDE;
2030                         dentry->d_lockref.count--;
2031 +                       vx_dentry_dec(dentry);
2032                 }
2033         }
2034         return D_WALK_CONTINUE;
2035 diff -NurpP --minimal linux-4.9.76/fs/devpts/inode.c linux-4.9.76-vs2.3.9.5/fs/devpts/inode.c
2036 --- linux-4.9.76/fs/devpts/inode.c      2016-12-11 19:17:54.000000000 +0000
2037 +++ linux-4.9.76-vs2.3.9.5/fs/devpts/inode.c    2018-01-13 01:06:29.000000000 +0000
2038 @@ -27,6 +27,7 @@
2039  #include <linux/parser.h>
2040  #include <linux/fsnotify.h>
2041  #include <linux/seq_file.h>
2042 +#include <linux/vs_base.h>
2043
2044  #define DEVPTS_DEFAULT_MODE 0600
2045  /*
2046 @@ -38,6 +39,21 @@
2047  #define DEVPTS_DEFAULT_PTMX_MODE 0000
2048  #define PTMX_MINOR     2
2049
2050 +static int devpts_permission(struct inode *inode, int mask)
2051 +{
2052 +       int ret = -EACCES;
2053 +
2054 +       /* devpts is xid tagged */
2055 +       if (vx_check((vxid_t)i_tag_read(inode), VS_WATCH_P | VS_IDENT))
2056 +               ret = generic_permission(inode, mask);
2057 +       return ret;
2058 +}
2059 +
2060 +static struct inode_operations devpts_file_inode_operations = {
2061 +       .permission     = devpts_permission,
2062 +};
2063 +
2064 +
2065  /*
2066   * sysctl support for setting limits on the number of Unix98 ptys allocated.
2067   * Otherwise one can eat up all kernel memory by opening /dev/ptmx repeatedly.
2068 @@ -363,6 +379,34 @@ static int devpts_show_options(struct se
2069         return 0;
2070  }
2071
2072 +static int devpts_filter(struct dentry *de)
2073 +{
2074 +       vxid_t xid = 0;
2075 +
2076 +       /* devpts is xid tagged */
2077 +       if (de && de->d_inode)
2078 +               xid = (vxid_t)i_tag_read(de->d_inode);
2079 +#ifdef CONFIG_VSERVER_WARN_DEVPTS
2080 +       else
2081 +               vxwprintk_task(1, "devpts " VS_Q("%.*s") " without inode.",
2082 +                       de->d_name.len, de->d_name.name);
2083 +#endif
2084 +       return vx_check(xid, VS_WATCH_P | VS_IDENT);
2085 +}
2086 +
2087 +static int devpts_readdir(struct file * filp, struct dir_context *ctx)
2088 +{
2089 +       return dcache_readdir_filter(filp, ctx, devpts_filter);
2090 +}
2091 +
2092 +static struct file_operations devpts_dir_operations = {
2093 +       .open           = dcache_dir_open,
2094 +       .release        = dcache_dir_close,
2095 +       .llseek         = dcache_dir_lseek,
2096 +       .read           = generic_read_dir,
2097 +       .iterate        = devpts_readdir,
2098 +};
2099 +
2100  static const struct super_operations devpts_sops = {
2101         .statfs         = simple_statfs,
2102         .remount_fs     = devpts_remount,
2103 @@ -415,8 +459,10 @@ devpts_fill_super(struct super_block *s,
2104         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
2105         inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
2106         inode->i_op = &simple_dir_inode_operations;
2107 -       inode->i_fop = &simple_dir_operations;
2108 +       inode->i_fop = &devpts_dir_operations;
2109         set_nlink(inode, 2);
2110 +       /* devpts is xid tagged */
2111 +       i_tag_write(inode, (vtag_t)vx_current_xid());
2112
2113         s->s_root = d_make_root(inode);
2114         if (!s->s_root) {
2115 @@ -542,6 +588,9 @@ struct dentry *devpts_pty_new(struct pts
2116         inode->i_gid = opts->setgid ? opts->gid : current_fsgid();
2117         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
2118         init_special_inode(inode, S_IFCHR|opts->mode, MKDEV(UNIX98_PTY_SLAVE_MAJOR, index));
2119 +       /* devpts is xid tagged */
2120 +       i_tag_write(inode, (vtag_t)vx_current_xid());
2121 +       inode->i_op = &devpts_file_inode_operations;
2122
2123         sprintf(s, "%d", index);
2124
2125 diff -NurpP --minimal linux-4.9.76/fs/ext2/balloc.c linux-4.9.76-vs2.3.9.5/fs/ext2/balloc.c
2126 --- linux-4.9.76/fs/ext2/balloc.c       2016-12-11 19:17:54.000000000 +0000
2127 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/balloc.c     2018-01-10 02:50:49.000000000 +0000
2128 @@ -693,7 +693,6 @@ ext2_try_to_allocate(struct super_block
2129                         start = 0;
2130                 end = EXT2_BLOCKS_PER_GROUP(sb);
2131         }
2132 -
2133         BUG_ON(start > EXT2_BLOCKS_PER_GROUP(sb));
2134
2135  repeat:
2136 diff -NurpP --minimal linux-4.9.76/fs/ext2/ext2.h linux-4.9.76-vs2.3.9.5/fs/ext2/ext2.h
2137 --- linux-4.9.76/fs/ext2/ext2.h 2016-12-11 19:17:54.000000000 +0000
2138 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/ext2.h       2018-01-10 02:50:49.000000000 +0000
2139 @@ -247,8 +247,12 @@ struct ext2_group_desc
2140  #define EXT2_NOTAIL_FL                 FS_NOTAIL_FL    /* file tail should not be merged */
2141  #define EXT2_DIRSYNC_FL                        FS_DIRSYNC_FL   /* dirsync behaviour (directories only) */
2142  #define EXT2_TOPDIR_FL                 FS_TOPDIR_FL    /* Top of directory hierarchies*/
2143 +#define EXT2_IXUNLINK_FL               FS_IXUNLINK_FL  /* Immutable invert on unlink */
2144  #define EXT2_RESERVED_FL               FS_RESERVED_FL  /* reserved for ext2 lib */
2145
2146 +#define EXT2_BARRIER_FL                        FS_BARRIER_FL   /* Barrier for chroot() */
2147 +#define EXT2_COW_FL                    FS_COW_FL       /* Copy on Write marker */
2148 +
2149  #define EXT2_FL_USER_VISIBLE           FS_FL_USER_VISIBLE      /* User visible flags */
2150  #define EXT2_FL_USER_MODIFIABLE                FS_FL_USER_MODIFIABLE   /* User modifiable flags */
2151
2152 @@ -332,7 +336,8 @@ struct ext2_inode {
2153                         __u16   i_pad1;
2154                         __le16  l_i_uid_high;   /* these 2 fields    */
2155                         __le16  l_i_gid_high;   /* were reserved2[0] */
2156 -                       __u32   l_i_reserved2;
2157 +                       __le16  l_i_tag;        /* Context Tag */
2158 +                       __u16   l_i_reserved2;
2159                 } linux2;
2160                 struct {
2161                         __u8    h_i_frag;       /* Fragment number */
2162 @@ -360,6 +365,7 @@ struct ext2_inode {
2163  #define i_gid_low      i_gid
2164  #define i_uid_high     osd2.linux2.l_i_uid_high
2165  #define i_gid_high     osd2.linux2.l_i_gid_high
2166 +#define i_raw_tag      osd2.linux2.l_i_tag
2167  #define i_reserved2    osd2.linux2.l_i_reserved2
2168
2169  /*
2170 @@ -393,6 +399,7 @@ struct ext2_inode {
2171  #else
2172  #define EXT2_MOUNT_DAX                 0
2173  #endif
2174 +#define EXT2_MOUNT_TAGGED              0x200000  /* Enable Context Tags */
2175
2176
2177  #define clear_opt(o, opt)              o &= ~EXT2_MOUNT_##opt
2178 @@ -782,6 +789,7 @@ extern void ext2_set_inode_flags(struct
2179  extern void ext2_get_inode_flags(struct ext2_inode_info *);
2180  extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2181                        u64 start, u64 len);
2182 +extern int ext2_sync_flags(struct inode *, int, int);
2183
2184  /* ioctl.c */
2185  extern long ext2_ioctl(struct file *, unsigned int, unsigned long);
2186 diff -NurpP --minimal linux-4.9.76/fs/ext2/file.c linux-4.9.76-vs2.3.9.5/fs/ext2/file.c
2187 --- linux-4.9.76/fs/ext2/file.c 2016-12-11 19:17:54.000000000 +0000
2188 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/file.c       2018-01-10 02:50:49.000000000 +0000
2189 @@ -247,4 +247,5 @@ const struct inode_operations ext2_file_
2190         .get_acl        = ext2_get_acl,
2191         .set_acl        = ext2_set_acl,
2192         .fiemap         = ext2_fiemap,
2193 +       .sync_flags     = ext2_sync_flags,
2194  };
2195 diff -NurpP --minimal linux-4.9.76/fs/ext2/ialloc.c linux-4.9.76-vs2.3.9.5/fs/ext2/ialloc.c
2196 --- linux-4.9.76/fs/ext2/ialloc.c       2016-12-11 19:17:54.000000000 +0000
2197 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/ialloc.c     2018-01-10 02:50:49.000000000 +0000
2198 @@ -17,6 +17,7 @@
2199  #include <linux/backing-dev.h>
2200  #include <linux/buffer_head.h>
2201  #include <linux/random.h>
2202 +#include <linux/vs_tag.h>
2203  #include "ext2.h"
2204  #include "xattr.h"
2205  #include "acl.h"
2206 @@ -551,6 +552,7 @@ got:
2207                 inode->i_mode = mode;
2208                 inode->i_uid = current_fsuid();
2209                 inode->i_gid = dir->i_gid;
2210 +               i_tag_write(inode, dx_current_fstag(sb));
2211         } else
2212                 inode_init_owner(inode, dir, mode);
2213
2214 diff -NurpP --minimal linux-4.9.76/fs/ext2/inode.c linux-4.9.76-vs2.3.9.5/fs/ext2/inode.c
2215 --- linux-4.9.76/fs/ext2/inode.c        2016-12-11 19:17:54.000000000 +0000
2216 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/inode.c      2018-01-13 01:19:54.000000000 +0000
2217 @@ -35,6 +35,7 @@
2218  #include <linux/iomap.h>
2219  #include <linux/namei.h>
2220  #include <linux/uio.h>
2221 +#include <linux/vs_tag.h>
2222  #include "ext2.h"
2223  #include "acl.h"
2224  #include "xattr.h"
2225 @@ -1271,7 +1272,7 @@ static void ext2_truncate_blocks(struct
2226                 return;
2227         if (ext2_inode_is_fast_symlink(inode))
2228                 return;
2229 -       if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
2230 +       if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
2231                 return;
2232
2233         dax_sem_down_write(EXT2_I(inode));
2234 @@ -1367,39 +1368,61 @@ void ext2_set_inode_flags(struct inode *
2235  {
2236         unsigned int flags = EXT2_I(inode)->i_flags;
2237
2238 -       inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
2239 -                               S_DIRSYNC | S_DAX);
2240 +       inode->i_flags &= ~(S_IMMUTABLE | S_IXUNLINK | S_DAX |
2241 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
2242 +
2243 +       if (flags & EXT2_IMMUTABLE_FL)
2244 +               inode->i_flags |= S_IMMUTABLE;
2245 +       if (flags & EXT2_IXUNLINK_FL)
2246 +               inode->i_flags |= S_IXUNLINK;
2247         if (flags & EXT2_SYNC_FL)
2248                 inode->i_flags |= S_SYNC;
2249         if (flags & EXT2_APPEND_FL)
2250                 inode->i_flags |= S_APPEND;
2251 -       if (flags & EXT2_IMMUTABLE_FL)
2252 -               inode->i_flags |= S_IMMUTABLE;
2253         if (flags & EXT2_NOATIME_FL)
2254                 inode->i_flags |= S_NOATIME;
2255         if (flags & EXT2_DIRSYNC_FL)
2256                 inode->i_flags |= S_DIRSYNC;
2257         if (test_opt(inode->i_sb, DAX) && S_ISREG(inode->i_mode))
2258                 inode->i_flags |= S_DAX;
2259 +
2260 +       inode->i_vflags &= ~(V_BARRIER | V_COW);
2261 +
2262 +       if (flags & EXT2_BARRIER_FL)
2263 +               inode->i_vflags |= V_BARRIER;
2264 +       if (flags & EXT2_COW_FL)
2265 +               inode->i_vflags |= V_COW;
2266  }
2267
2268  /* Propagate flags from i_flags to EXT2_I(inode)->i_flags */
2269  void ext2_get_inode_flags(struct ext2_inode_info *ei)
2270  {
2271         unsigned int flags = ei->vfs_inode.i_flags;
2272 +       unsigned int vflags = ei->vfs_inode.i_vflags;
2273 +
2274 +       ei->i_flags &= ~(EXT2_SYNC_FL | EXT2_APPEND_FL |
2275 +                       EXT2_IMMUTABLE_FL | EXT2_IXUNLINK_FL |
2276 +                       EXT2_NOATIME_FL | EXT2_DIRSYNC_FL |
2277 +                       EXT2_BARRIER_FL | EXT2_COW_FL);
2278 +
2279 +       if (flags & S_IMMUTABLE)
2280 +               ei->i_flags |= EXT2_IMMUTABLE_FL;
2281 +       if (flags & S_IXUNLINK)
2282 +               ei->i_flags |= EXT2_IXUNLINK_FL;
2283
2284 -       ei->i_flags &= ~(EXT2_SYNC_FL|EXT2_APPEND_FL|
2285 -                       EXT2_IMMUTABLE_FL|EXT2_NOATIME_FL|EXT2_DIRSYNC_FL);
2286         if (flags & S_SYNC)
2287                 ei->i_flags |= EXT2_SYNC_FL;
2288         if (flags & S_APPEND)
2289                 ei->i_flags |= EXT2_APPEND_FL;
2290 -       if (flags & S_IMMUTABLE)
2291 -               ei->i_flags |= EXT2_IMMUTABLE_FL;
2292         if (flags & S_NOATIME)
2293                 ei->i_flags |= EXT2_NOATIME_FL;
2294         if (flags & S_DIRSYNC)
2295                 ei->i_flags |= EXT2_DIRSYNC_FL;
2296 +
2297 +       if (vflags & V_BARRIER)
2298 +               ei->i_flags |= EXT2_BARRIER_FL;
2299 +       if (vflags & V_COW)
2300 +               ei->i_flags |= EXT2_COW_FL;
2301  }
2302
2303  struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
2304 @@ -1435,8 +1458,10 @@ struct inode *ext2_iget (struct super_bl
2305                 i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
2306                 i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
2307         }
2308 -       i_uid_write(inode, i_uid);
2309 -       i_gid_write(inode, i_gid);
2310 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), i_uid, i_gid));
2311 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), i_uid, i_gid));
2312 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), i_uid, i_gid,
2313 +               le16_to_cpu(raw_inode->i_raw_tag)));
2314         set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
2315         inode->i_size = le32_to_cpu(raw_inode->i_size);
2316         inode->i_atime.tv_sec = (signed)le32_to_cpu(raw_inode->i_atime);
2317 @@ -1543,8 +1568,10 @@ static int __ext2_write_inode(struct ino
2318         struct ext2_inode_info *ei = EXT2_I(inode);
2319         struct super_block *sb = inode->i_sb;
2320         ino_t ino = inode->i_ino;
2321 -       uid_t uid = i_uid_read(inode);
2322 -       gid_t gid = i_gid_read(inode);
2323 +       uid_t uid = from_kuid(&init_user_ns,
2324 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
2325 +       gid_t gid = from_kgid(&init_user_ns,
2326 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
2327         struct buffer_head * bh;
2328         struct ext2_inode * raw_inode = ext2_get_inode(sb, ino, &bh);
2329         int n;
2330 @@ -1580,6 +1607,9 @@ static int __ext2_write_inode(struct ino
2331                 raw_inode->i_uid_high = 0;
2332                 raw_inode->i_gid_high = 0;
2333         }
2334 +#ifdef CONFIG_TAGGING_INTERN
2335 +       raw_inode->i_raw_tag = cpu_to_le16(i_tag_read(inode));
2336 +#endif
2337         raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
2338         raw_inode->i_size = cpu_to_le32(inode->i_size);
2339         raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
2340 @@ -1663,7 +1693,8 @@ int ext2_setattr(struct dentry *dentry,
2341                         return error;
2342         }
2343         if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
2344 -           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
2345 +           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid)) ||
2346 +           (iattr->ia_valid & ATTR_TAG && !tag_eq(iattr->ia_tag, inode->i_tag))) {
2347                 error = dquot_transfer(inode, iattr);
2348                 if (error)
2349                         return error;
2350 diff -NurpP --minimal linux-4.9.76/fs/ext2/ioctl.c linux-4.9.76-vs2.3.9.5/fs/ext2/ioctl.c
2351 --- linux-4.9.76/fs/ext2/ioctl.c        2016-12-11 19:17:54.000000000 +0000
2352 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/ioctl.c      2018-01-13 01:20:40.000000000 +0000
2353 @@ -17,6 +17,16 @@
2354  #include <asm/uaccess.h>
2355
2356
2357 +int ext2_sync_flags(struct inode *inode, int flags, int vflags)
2358 +{
2359 +       inode->i_flags = flags;
2360 +       inode->i_vflags = vflags;
2361 +       ext2_get_inode_flags(EXT2_I(inode));
2362 +       inode->i_ctime = CURRENT_TIME_SEC;
2363 +       mark_inode_dirty(inode);
2364 +       return 0;
2365 +}
2366 +
2367  long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2368  {
2369         struct inode *inode = file_inode(filp);
2370 @@ -51,6 +61,11 @@ long ext2_ioctl(struct file *filp, unsig
2371
2372                 flags = ext2_mask_flags(inode->i_mode, flags);
2373
2374 +               if (IS_BARRIER(inode)) {
2375 +                       vxwprintk_task(1, "messing with the barrier.");
2376 +                       return -EACCES;
2377 +               }
2378 +
2379                 inode_lock(inode);
2380                 /* Is it quota file? Do not allow user to mess with it */
2381                 if (IS_NOQUOTA(inode)) {
2382 @@ -66,7 +81,9 @@ long ext2_ioctl(struct file *filp, unsig
2383                  *
2384                  * This test looks nicer. Thanks to Pauline Middelink
2385                  */
2386 -               if ((flags ^ oldflags) & (EXT2_APPEND_FL | EXT2_IMMUTABLE_FL)) {
2387 +               if ((oldflags & EXT2_IMMUTABLE_FL) ||
2388 +                       ((flags ^ oldflags) & (EXT2_APPEND_FL |
2389 +                       EXT2_IMMUTABLE_FL | EXT2_IXUNLINK_FL))) {
2390                         if (!capable(CAP_LINUX_IMMUTABLE)) {
2391                                 inode_unlock(inode);
2392                                 ret = -EPERM;
2393 @@ -74,7 +91,7 @@ long ext2_ioctl(struct file *filp, unsig
2394                         }
2395                 }
2396
2397 -               flags = flags & EXT2_FL_USER_MODIFIABLE;
2398 +               flags &= EXT2_FL_USER_MODIFIABLE;
2399                 flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE;
2400                 ei->i_flags = flags;
2401
2402 diff -NurpP --minimal linux-4.9.76/fs/ext2/namei.c linux-4.9.76-vs2.3.9.5/fs/ext2/namei.c
2403 --- linux-4.9.76/fs/ext2/namei.c        2016-12-11 19:17:54.000000000 +0000
2404 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/namei.c      2018-01-10 02:50:49.000000000 +0000
2405 @@ -32,6 +32,7 @@
2406
2407  #include <linux/pagemap.h>
2408  #include <linux/quotaops.h>
2409 +#include <linux/vs_tag.h>
2410  #include "ext2.h"
2411  #include "xattr.h"
2412  #include "acl.h"
2413 @@ -72,6 +73,7 @@ static struct dentry *ext2_lookup(struct
2414                                         (unsigned long) ino);
2415                         return ERR_PTR(-EIO);
2416                 }
2417 +               dx_propagate_tag(nd, inode);
2418         }
2419         return d_splice_alias(inode, dentry);
2420  }
2421 @@ -445,6 +447,7 @@ const struct inode_operations ext2_speci
2422         .listxattr      = ext2_listxattr,
2423  #endif
2424         .setattr        = ext2_setattr,
2425 +       .sync_flags     = ext2_sync_flags,
2426         .get_acl        = ext2_get_acl,
2427         .set_acl        = ext2_set_acl,
2428  };
2429 diff -NurpP --minimal linux-4.9.76/fs/ext2/super.c linux-4.9.76-vs2.3.9.5/fs/ext2/super.c
2430 --- linux-4.9.76/fs/ext2/super.c        2016-12-11 19:17:54.000000000 +0000
2431 +++ linux-4.9.76-vs2.3.9.5/fs/ext2/super.c      2018-01-10 02:50:49.000000000 +0000
2432 @@ -411,7 +411,8 @@ enum {
2433         Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug,
2434         Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
2435         Opt_acl, Opt_noacl, Opt_xip, Opt_dax, Opt_ignore, Opt_err, Opt_quota,
2436 -       Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation
2437 +       Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation,
2438 +       Opt_tag, Opt_notag, Opt_tagid
2439  };
2440
2441  static const match_table_t tokens = {
2442 @@ -439,6 +440,9 @@ static const match_table_t tokens = {
2443         {Opt_acl, "acl"},
2444         {Opt_noacl, "noacl"},
2445         {Opt_xip, "xip"},
2446 +       {Opt_tag, "tag"},
2447 +       {Opt_notag, "notag"},
2448 +       {Opt_tagid, "tagid=%u"},
2449         {Opt_dax, "dax"},
2450         {Opt_grpquota, "grpquota"},
2451         {Opt_ignore, "noquota"},
2452 @@ -523,6 +527,20 @@ static int parse_options(char *options,
2453                 case Opt_nouid32:
2454                         set_opt (sbi->s_mount_opt, NO_UID32);
2455                         break;
2456 +#ifndef CONFIG_TAGGING_NONE
2457 +               case Opt_tag:
2458 +                       set_opt (sbi->s_mount_opt, TAGGED);
2459 +                       break;
2460 +               case Opt_notag:
2461 +                       clear_opt (sbi->s_mount_opt, TAGGED);
2462 +                       break;
2463 +#endif
2464 +#ifdef CONFIG_PROPAGATE
2465 +               case Opt_tagid:
2466 +                       /* use args[0] */
2467 +                       set_opt (sbi->s_mount_opt, TAGGED);
2468 +                       break;
2469 +#endif
2470                 case Opt_nocheck:
2471                         clear_opt (sbi->s_mount_opt, CHECK);
2472                         break;
2473 @@ -887,6 +905,8 @@ static int ext2_fill_super(struct super_
2474         if (!parse_options((char *) data, sb))
2475                 goto failed_mount;
2476
2477 +       if (EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_TAGGED)
2478 +               sb->s_flags |= MS_TAGGED;
2479         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2480                 ((EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ?
2481                  MS_POSIXACL : 0);
2482 @@ -1300,6 +1320,14 @@ static int ext2_remount (struct super_bl
2483                 err = -EINVAL;
2484                 goto restore_opts;
2485         }
2486 +
2487 +       if ((sbi->s_mount_opt & EXT2_MOUNT_TAGGED) &&
2488 +               !(sb->s_flags & MS_TAGGED)) {
2489 +               printk("EXT2-fs: %s: tagging not permitted on remount.\n",
2490 +                      sb->s_id);
2491 +               err = -EINVAL;
2492 +               goto restore_opts;
2493 +       }
2494
2495         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2496                 ((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
2497 diff -NurpP --minimal linux-4.9.76/fs/ext4/ext4.h linux-4.9.76-vs2.3.9.5/fs/ext4/ext4.h
2498 --- linux-4.9.76/fs/ext4/ext4.h 2016-12-11 19:17:54.000000000 +0000
2499 +++ linux-4.9.76-vs2.3.9.5/fs/ext4/ext4.h       2018-01-13 02:00:49.000000000 +0000
2500 @@ -392,8 +392,11 @@ struct flex_groups {
2501  #define EXT4_EXTENTS_FL                        0x00080000 /* Inode uses extents */
2502  #define EXT4_EA_INODE_FL               0x00200000 /* Inode used for large EA */
2503  #define EXT4_EOFBLOCKS_FL              0x00400000 /* Blocks allocated beyond EOF */
2504 +#define EXT4_BARRIER_FL                        0x04000000 /* Barrier for chroot() */
2505 +#define EXT4_IXUNLINK_FL               0x08000000 /* Immutable invert on unlink */
2506  #define EXT4_INLINE_DATA_FL            0x10000000 /* Inode has inline data. */
2507  #define EXT4_PROJINHERIT_FL            0x20000000 /* Create with parents projid */
2508 +#define EXT4_COW_FL                    0x40000000 /* Copy on Write marker */
2509  #define EXT4_RESERVED_FL               0x80000000 /* reserved for ext4 lib */
2510
2511  #define EXT4_FL_USER_VISIBLE           0x304BDFFF /* User visible flags */
2512 @@ -735,7 +738,7 @@ struct ext4_inode {
2513                         __le16  l_i_uid_high;   /* these 2 fields */
2514                         __le16  l_i_gid_high;   /* were reserved2[0] */
2515                         __le16  l_i_checksum_lo;/* crc32c(uuid+inum+inode) LE */
2516 -                       __le16  l_i_reserved;
2517 +                       __le16  l_i_tag;        /* Context Tag */
2518                 } linux2;
2519                 struct {
2520                         __le16  h_i_reserved1;  /* Obsoleted fragment number/size which are removed in ext4 */
2521 @@ -892,6 +895,7 @@ do {                                                                               \
2522  #define i_gid_low      i_gid
2523  #define i_uid_high     osd2.linux2.l_i_uid_high
2524  #define i_gid_high     osd2.linux2.l_i_gid_high
2525 +#define i_raw_tag      osd2.linux2.l_i_tag
2526  #define i_checksum_lo  osd2.linux2.l_i_checksum_lo
2527
2528  #elif defined(__GNU__)
2529 @@ -1133,6 +1137,7 @@ struct ext4_inode_info {
2530  #define EXT4_MOUNT_DIOREAD_NOLOCK      0x400000 /* Enable support for dio read nolocking */
2531  #define EXT4_MOUNT_JOURNAL_CHECKSUM    0x800000 /* Journal checksums */
2532  #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT        0x1000000 /* Journal Async Commit */
2533 +#define EXT4_MOUNT_TAGGED              0x2000000 /* Enable Context Tags */
2534  #define EXT4_MOUNT_DELALLOC            0x8000000 /* Delalloc support */
2535  #define EXT4_MOUNT_DATA_ERR_ABORT      0x10000000 /* Abort on file data write */
2536  #define EXT4_MOUNT_BLOCK_VALIDITY      0x20000000 /* Block validity checking */
2537 @@ -2497,6 +2502,7 @@ extern int ext4_punch_hole(struct inode
2538  extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks);
2539  extern void ext4_set_inode_flags(struct inode *);
2540  extern void ext4_get_inode_flags(struct ext4_inode_info *);
2541 +extern int ext4_sync_flags(struct inode *, int, int);
2542  extern int ext4_alloc_da_blocks(struct inode *inode);
2543  extern void ext4_set_aops(struct inode *inode);
2544  extern int ext4_writepage_trans_blocks(struct inode *);
2545 diff -NurpP --minimal linux-4.9.76/fs/ext4/file.c linux-4.9.76-vs2.3.9.5/fs/ext4/file.c
2546 --- linux-4.9.76/fs/ext4/file.c 2018-01-13 21:28:56.000000000 +0000
2547 +++ linux-4.9.76-vs2.3.9.5/fs/ext4/file.c       2018-01-10 02:50:49.000000000 +0000
2548 @@ -691,5 +691,6 @@ const struct inode_operations ext4_file_
2549         .get_acl        = ext4_get_acl,
2550         .set_acl        = ext4_set_acl,
2551         .fiemap         = ext4_fiemap,
2552 +       .sync_flags     = ext4_sync_flags,
2553  };
2554
2555 diff -NurpP --minimal linux-4.9.76/fs/ext4/ialloc.c linux-4.9.76-vs2.3.9.5/fs/ext4/ialloc.c
2556 --- linux-4.9.76/fs/ext4/ialloc.c       2018-01-13 21:28:56.000000000 +0000
2557 +++ linux-4.9.76-vs2.3.9.5/fs/ext4/ialloc.c     2018-01-10 02:50:49.000000000 +0000
2558 @@ -21,6 +21,7 @@
2559  #include <linux/random.h>
2560  #include <linux/bitops.h>
2561  #include <linux/blkdev.h>
2562 +#include <linux/vs_tag.h>
2563  #include <asm/byteorder.h>
2564
2565  #include "ext4.h"
2566 @@ -799,6 +800,7 @@ struct inode *__ext4_new_inode(handle_t
2567                 inode->i_mode = mode;
2568                 inode->i_uid = current_fsuid();
2569                 inode->i_gid = dir->i_gid;
2570 +               i_tag_write(inode, dx_current_fstag(sb));
2571         } else
2572                 inode_init_owner(inode, dir, mode);
2573
2574 diff -NurpP --minimal linux-4.9.76/fs/ext4/inode.c linux-4.9.76-vs2.3.9.5/fs/ext4/inode.c
2575 --- linux-4.9.76/fs/ext4/inode.c        2018-01-13 21:28:56.000000000 +0000
2576 +++ linux-4.9.76-vs2.3.9.5/fs/ext4/inode.c      2018-01-13 02:02:12.000000000 +0000
2577 @@ -37,6 +37,7 @@
2578  #include <linux/printk.h>
2579  #include <linux/slab.h>
2580  #include <linux/bitops.h>
2581 +#include <linux/vs_tag.h>
2582
2583  #include "ext4_jbd2.h"
2584  #include "xattr.h"
2585 @@ -4374,12 +4375,15 @@ void ext4_set_inode_flags(struct inode *
2586         unsigned int flags = EXT4_I(inode)->i_flags;
2587         unsigned int new_fl = 0;
2588
2589 +       if (flags & EXT4_IMMUTABLE_FL)
2590 +               new_fl |= S_IMMUTABLE;
2591 +       if (flags & EXT4_IXUNLINK_FL)
2592 +               new_fl |= S_IXUNLINK;
2593 +
2594         if (flags & EXT4_SYNC_FL)
2595                 new_fl |= S_SYNC;
2596         if (flags & EXT4_APPEND_FL)
2597                 new_fl |= S_APPEND;
2598 -       if (flags & EXT4_IMMUTABLE_FL)
2599 -               new_fl |= S_IMMUTABLE;
2600         if (flags & EXT4_NOATIME_FL)
2601                 new_fl |= S_NOATIME;
2602         if (flags & EXT4_DIRSYNC_FL)
2603 @@ -4387,31 +4391,52 @@ void ext4_set_inode_flags(struct inode *
2604         if (test_opt(inode->i_sb, DAX) && S_ISREG(inode->i_mode))
2605                 new_fl |= S_DAX;
2606         inode_set_flags(inode, new_fl,
2607 -                       S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_DAX);
2608 +               S_IXUNLINK | S_IMMUTABLE | S_DAX |
2609 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
2610 +
2611 +       new_fl = 0;
2612 +       if (flags & EXT4_BARRIER_FL)
2613 +               new_fl |= V_BARRIER;
2614 +       if (flags & EXT4_COW_FL)
2615 +               new_fl |= V_COW;
2616 +
2617 +       set_mask_bits(&inode->i_vflags,
2618 +               V_BARRIER | V_COW, new_fl);
2619  }
2620
2621  /* Propagate flags from i_flags to EXT4_I(inode)->i_flags */
2622  void ext4_get_inode_flags(struct ext4_inode_info *ei)
2623  {
2624 -       unsigned int vfs_fl;
2625 +       unsigned int vfs_fl, vfs_vf;
2626         unsigned long old_fl, new_fl;
2627
2628         do {
2629                 vfs_fl = ei->vfs_inode.i_flags;
2630 +               vfs_vf = ei->vfs_inode.i_vflags;
2631                 old_fl = ei->i_flags;
2632                 new_fl = old_fl & ~(EXT4_SYNC_FL|EXT4_APPEND_FL|
2633                                 EXT4_IMMUTABLE_FL|EXT4_NOATIME_FL|
2634 -                               EXT4_DIRSYNC_FL);
2635 +                               EXT4_DIRSYNC_FL|EXT4_BARRIER_FL|
2636 +                               EXT4_COW_FL);
2637 +
2638 +               if (vfs_fl & S_IMMUTABLE)
2639 +                       new_fl |= EXT4_IMMUTABLE_FL;
2640 +               if (vfs_fl & S_IXUNLINK)
2641 +                       new_fl |= EXT4_IXUNLINK_FL;
2642 +
2643                 if (vfs_fl & S_SYNC)
2644                         new_fl |= EXT4_SYNC_FL;
2645                 if (vfs_fl & S_APPEND)
2646                         new_fl |= EXT4_APPEND_FL;
2647 -               if (vfs_fl & S_IMMUTABLE)
2648 -                       new_fl |= EXT4_IMMUTABLE_FL;
2649                 if (vfs_fl & S_NOATIME)
2650                         new_fl |= EXT4_NOATIME_FL;
2651                 if (vfs_fl & S_DIRSYNC)
2652                         new_fl |= EXT4_DIRSYNC_FL;
2653 +
2654 +               if (vfs_vf & V_BARRIER)
2655 +                       new_fl |= EXT4_BARRIER_FL;
2656 +               if (vfs_vf & V_COW)
2657 +                       new_fl |= EXT4_COW_FL;
2658         } while (cmpxchg(&ei->i_flags, old_fl, new_fl) != old_fl);
2659  }
2660
2661 @@ -4531,8 +4556,10 @@ struct inode *ext4_iget(struct super_blo
2662                 i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
2663                 i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
2664         }
2665 -       i_uid_write(inode, i_uid);
2666 -       i_gid_write(inode, i_gid);
2667 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), i_uid, i_gid));
2668 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), i_uid, i_gid));
2669 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), i_uid, i_gid,
2670 +               le16_to_cpu(raw_inode->i_raw_tag)));
2671         ei->i_projid = make_kprojid(&init_user_ns, i_projid);
2672         set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
2673
2674 @@ -4848,8 +4875,10 @@ static int ext4_do_update_inode(handle_t
2675
2676         ext4_get_inode_flags(ei);
2677         raw_inode->i_mode = cpu_to_le16(inode->i_mode);
2678 -       i_uid = i_uid_read(inode);
2679 -       i_gid = i_gid_read(inode);
2680 +       i_uid = from_kuid(&init_user_ns,
2681 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
2682 +       i_gid = from_kgid(&init_user_ns,
2683 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
2684         i_projid = from_kprojid(&init_user_ns, ei->i_projid);
2685         if (!(test_opt(inode->i_sb, NO_UID32))) {
2686                 raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
2687 @@ -4873,6 +4902,9 @@ static int ext4_do_update_inode(handle_t
2688                 raw_inode->i_uid_high = 0;
2689                 raw_inode->i_gid_high = 0;
2690         }
2691 +#ifdef CONFIG_TAGGING_INTERN
2692 +       raw_inode->i_raw_tag = cpu_to_le16(i_tag_read(inode));
2693 +#endif
2694         raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
2695
2696         EXT4_INODE_SET_XTIME(i_ctime, inode, raw_inode);
2697 @@ -5126,7 +5158,8 @@ int ext4_setattr(struct dentry *dentry,
2698                         return error;
2699         }
2700         if ((ia_valid & ATTR_UID && !uid_eq(attr->ia_uid, inode->i_uid)) ||
2701 -           (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid))) {
2702 +           (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid)) ||
2703 +           (ia_valid & ATTR_TAG && !tag_eq(attr->ia_tag, inode->i_tag))) {
2704                 handle_t *handle;
2705
2706                 /* (user+group)*(old+new) structure, inode write (sb,
2707 @@ -5149,6 +5182,8 @@ int ext4_setattr(struct dentry *dentry,
2708                         inode->i_uid = attr->ia_uid;
2709                 if (attr->ia_valid & ATTR_GID)
2710                         inode->i_gid = attr->ia_gid;
2711 +               if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
2712 +                       inode->i_tag = attr->ia_tag;
2713                 error = ext4_mark_inode_dirty(handle, inode);
2714                 ext4_journal_stop(handle);
2715         }
2716 diff -NurpP --minimal linux-4.9.76/fs/ext4/ioctl.c linux-4.9.76-vs2.3.9.5/fs/ext4/ioctl.c
2717 --- linux-4.9.76/fs/ext4/ioctl.c        2016-12-11 19:17:54.000000000 +0000
2718 +++ linux-4.9.76-vs2.3.9.5/fs/ext4/ioctl.c      2018-01-13 02:03:59.000000000 +0000
2719 @@ -15,6 +15,7 @@
2720  #include <linux/file.h>
2721  #include <linux/quotaops.h>
2722  #include <linux/uuid.h>
2723 +#include <linux/vs_tag.h>
2724  #include <asm/uaccess.h>
2725  #include "ext4_jbd2.h"
2726  #include "ext4.h"
2727 @@ -226,7 +227,9 @@ static int ext4_ioctl_setflags(struct in
2728          *
2729          * This test looks nicer. Thanks to Pauline Middelink
2730          */
2731 -       if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
2732 +       if ((oldflags & EXT4_IMMUTABLE_FL) ||
2733 +               ((flags ^ oldflags) & (EXT4_APPEND_FL |
2734 +               EXT4_IMMUTABLE_FL | EXT4_IXUNLINK_FL))) {
2735                 if (!capable(CAP_LINUX_IMMUTABLE))
2736                         goto flags_out;
2737         }
2738 @@ -430,6 +433,33 @@ static inline unsigned long ext4_xflags_
2739         return iflags;
2740  }
2741
2742 +int ext4_sync_flags(struct inode *inode, int flags, int vflags)
2743 +{
2744 +       handle_t *handle = NULL;
2745 +       struct ext4_iloc iloc;
2746 +       int err;
2747 +
2748 +       handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
2749 +       if (IS_ERR(handle))
2750 +               return PTR_ERR(handle);
2751 +
2752 +       if (IS_SYNC(inode))
2753 +               ext4_handle_sync(handle);
2754 +       err = ext4_reserve_inode_write(handle, inode, &iloc);
2755 +       if (err)
2756 +               goto flags_err;
2757 +
2758 +       inode->i_flags = flags;
2759 +       inode->i_vflags = vflags;
2760 +       ext4_get_inode_flags(EXT4_I(inode));
2761 +       inode->i_ctime = ext4_current_time(inode);
2762 +
2763 +       err = ext4_mark_iloc_dirty(handle, inode, &iloc);
2764 +flags_err:
2765 +       ext4_journal_stop(handle);
2766 +       return err;
2767 +}
2768 +
2769  long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2770  {
2771         struct inode *inode = file_inode(filp);
2772 @@ -459,6 +489,11 @@ long ext4_ioctl(struct file *filp, unsig
2773
2774                 flags = ext4_mask_flags(inode->i_mode, flags);
2775
2776 +               if (IS_BARRIER(inode)) {
2777 +                       vxwprintk_task(1, "messing with the barrier.");
2778 +                       return -EACCES;
2779 +               }
2780 +
2781                 inode_lock(inode);
2782                 err = ext4_ioctl_setflags(inode, flags);
2783                 inode_unlock(inode);
2784 diff -NurpP --minimal linux-4.9.76/fs/ext4/namei.c linux-4.9.76-vs2.3.9.5/fs/ext4/namei.c
2785 --- linux-4.9.76/fs/ext4/namei.c        2018-01-13 21:28:56.000000000 +0000
2786 +++ linux-4.9.76-vs2.3.9.5/fs/ext4/namei.c      2018-01-10 02:50:49.000000000 +0000
2787 @@ -33,6 +33,7 @@
2788  #include <linux/quotaops.h>
2789  #include <linux/buffer_head.h>
2790  #include <linux/bio.h>
2791 +#include <linux/vs_tag.h>
2792  #include "ext4.h"
2793  #include "ext4_jbd2.h"
2794
2795 @@ -1459,6 +1460,7 @@ restart:
2796                                                     REQ_META | REQ_PRIO,
2797                                                     1, &bh);
2798                         }
2799 +               dx_propagate_tag(nd, inode);
2800                 }
2801                 if ((bh = bh_use[ra_ptr++]) == NULL)
2802                         goto next;
2803 @@ -3906,6 +3908,7 @@ const struct inode_operations ext4_dir_i
2804         .get_acl        = ext4_get_acl,
2805         .set_acl        = ext4_set_acl,
2806         .fiemap         = ext4_fiemap,
2807 +       .sync_flags     = ext4_sync_flags,
2808  };
2809
2810  const struct inode_operations ext4_special_inode_operations = {
2811 diff -NurpP --minimal linux-4.9.76/fs/ext4/super.c linux-4.9.76-vs2.3.9.5/fs/ext4/super.c
2812 --- linux-4.9.76/fs/ext4/super.c        2018-01-13 21:28:56.000000000 +0000
2813 +++ linux-4.9.76-vs2.3.9.5/fs/ext4/super.c      2018-01-10 02:50:49.000000000 +0000
2814 @@ -1280,6 +1280,7 @@ enum {
2815         Opt_dioread_nolock, Opt_dioread_lock,
2816         Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
2817         Opt_max_dir_size_kb, Opt_nojournal_checksum,
2818 +       Opt_tag, Opt_notag, Opt_tagid
2819  };
2820
2821  static const match_table_t tokens = {
2822 @@ -1366,6 +1367,9 @@ static const match_table_t tokens = {
2823         {Opt_removed, "reservation"},   /* mount option from ext2/3 */
2824         {Opt_removed, "noreservation"}, /* mount option from ext2/3 */
2825         {Opt_removed, "journal=%u"},    /* mount option from ext2/3 */
2826 +       {Opt_tag, "tag"},
2827 +       {Opt_notag, "notag"},
2828 +       {Opt_tagid, "tagid=%u"},
2829         {Opt_err, NULL},
2830  };
2831
2832 @@ -1611,6 +1615,20 @@ static int handle_mount_opt(struct super
2833         case Opt_nolazytime:
2834                 sb->s_flags &= ~MS_LAZYTIME;
2835                 return 1;
2836 +#ifndef CONFIG_TAGGING_NONE
2837 +       case Opt_tag:
2838 +               set_opt(sb, TAGGED);
2839 +               return 1;
2840 +       case Opt_notag:
2841 +               clear_opt(sb, TAGGED);
2842 +               return 1;
2843 +#endif
2844 +#ifdef CONFIG_PROPAGATE
2845 +       case Opt_tagid:
2846 +               /* use args[0] */
2847 +               set_opt(sb, TAGGED);
2848 +               return 1;
2849 +#endif
2850         }
2851
2852         for (m = ext4_mount_opts; m->token != Opt_err; m++)
2853 @@ -3550,6 +3568,9 @@ static int ext4_fill_super(struct super_
2854                 sb->s_iflags |= SB_I_CGROUPWB;
2855         }
2856
2857 +       if (EXT4_SB(sb)->s_mount_opt & EXT4_MOUNT_TAGGED)
2858 +               sb->s_flags |= MS_TAGGED;
2859 +
2860         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2861                 (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
2862
2863 @@ -4917,6 +4938,14 @@ static int ext4_remount(struct super_blo
2864         if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED)
2865                 ext4_abort(sb, "Abort forced by user");
2866
2867 +       if ((sbi->s_mount_opt & EXT4_MOUNT_TAGGED) &&
2868 +               !(sb->s_flags & MS_TAGGED)) {
2869 +               printk("EXT4-fs: %s: tagging not permitted on remount.\n",
2870 +                       sb->s_id);
2871 +               err = -EINVAL;
2872 +               goto restore_opts;
2873 +       }
2874 +
2875         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2876                 (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
2877
2878 diff -NurpP --minimal linux-4.9.76/fs/fcntl.c linux-4.9.76-vs2.3.9.5/fs/fcntl.c
2879 --- linux-4.9.76/fs/fcntl.c     2018-01-13 21:28:57.000000000 +0000
2880 +++ linux-4.9.76-vs2.3.9.5/fs/fcntl.c   2018-01-10 02:50:49.000000000 +0000
2881 @@ -22,6 +22,7 @@
2882  #include <linux/pid_namespace.h>
2883  #include <linux/user_namespace.h>
2884  #include <linux/shmem_fs.h>
2885 +#include <linux/vs_limit.h>
2886
2887  #include <asm/poll.h>
2888  #include <asm/siginfo.h>
2889 @@ -386,6 +387,8 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, f
2890
2891         if (!f.file)
2892                 goto out;
2893 +       if (!vx_files_avail(1))
2894 +               goto out;
2895
2896         if (unlikely(f.file->f_mode & FMODE_PATH)) {
2897                 if (!check_fcntl_cmd(cmd))
2898 diff -NurpP --minimal linux-4.9.76/fs/file.c linux-4.9.76-vs2.3.9.5/fs/file.c
2899 --- linux-4.9.76/fs/file.c      2016-12-11 19:17:54.000000000 +0000
2900 +++ linux-4.9.76-vs2.3.9.5/fs/file.c    2018-01-10 02:50:49.000000000 +0000
2901 @@ -22,6 +22,7 @@
2902  #include <linux/spinlock.h>
2903  #include <linux/rcupdate.h>
2904  #include <linux/workqueue.h>
2905 +#include <linux/vs_limit.h>
2906
2907  unsigned int sysctl_nr_open __read_mostly = 1024*1024;
2908  unsigned int sysctl_nr_open_min = BITS_PER_LONG;
2909 @@ -357,6 +358,8 @@ struct files_struct *dup_fd(struct files
2910                 struct file *f = *old_fds++;
2911                 if (f) {
2912                         get_file(f);
2913 +                       /* TODO: sum it first for check and performance */
2914 +                       vx_openfd_inc(open_files - i);
2915                 } else {
2916                         /*
2917                          * The fd may be claimed in the fd bitmap but not yet
2918 @@ -406,9 +409,11 @@ static struct fdtable *close_files(struc
2919                                         filp_close(file, files);
2920                                         cond_resched_rcu_qs();
2921                                 }
2922 +                               vx_openfd_dec(i);
2923                         }
2924                         i++;
2925                         set >>= 1;
2926 +                       cond_resched();
2927                 }
2928         }
2929
2930 @@ -539,6 +544,7 @@ repeat:
2931         else
2932                 __clear_close_on_exec(fd, fdt);
2933         error = fd;
2934 +       vx_openfd_inc(fd);
2935  #if 1
2936         /* Sanity check */
2937         if (rcu_access_pointer(fdt->fd[fd]) != NULL) {
2938 @@ -569,6 +575,7 @@ static void __put_unused_fd(struct files
2939         __clear_open_fd(fd, fdt);
2940         if (fd < files->next_fd)
2941                 files->next_fd = fd;
2942 +       vx_openfd_dec(fd);
2943  }
2944
2945  void put_unused_fd(unsigned int fd)
2946 @@ -856,6 +863,8 @@ __releases(&files->file_lock)
2947
2948         if (tofree)
2949                 filp_close(tofree, files);
2950 +       else
2951 +               vx_openfd_inc(fd);      /* fd was unused */
2952
2953         return fd;
2954
2955 diff -NurpP --minimal linux-4.9.76/fs/file_table.c linux-4.9.76-vs2.3.9.5/fs/file_table.c
2956 --- linux-4.9.76/fs/file_table.c        2016-12-11 19:17:54.000000000 +0000
2957 +++ linux-4.9.76-vs2.3.9.5/fs/file_table.c      2018-01-10 02:50:49.000000000 +0000
2958 @@ -26,6 +26,8 @@
2959  #include <linux/task_work.h>
2960  #include <linux/ima.h>
2961  #include <linux/swap.h>
2962 +#include <linux/vs_limit.h>
2963 +#include <linux/vs_context.h>
2964
2965  #include <linux/atomic.h>
2966
2967 @@ -137,6 +139,8 @@ struct file *get_empty_filp(void)
2968         mutex_init(&f->f_pos_lock);
2969         eventpoll_init_file(f);
2970         /* f->f_version: 0 */
2971 +       f->f_xid = vx_current_xid();
2972 +       vx_files_inc(f);
2973         return f;
2974
2975  over:
2976 @@ -219,6 +223,8 @@ static void __fput(struct file *file)
2977                 put_write_access(inode);
2978                 __mnt_drop_write(mnt);
2979         }
2980 +       vx_files_dec(file);
2981 +       file->f_xid = 0;
2982         file->f_path.dentry = NULL;
2983         file->f_path.mnt = NULL;
2984         file->f_inode = NULL;
2985 @@ -305,6 +311,8 @@ void put_filp(struct file *file)
2986  {
2987         if (atomic_long_dec_and_test(&file->f_count)) {
2988                 security_file_free(file);
2989 +               vx_files_dec(file);
2990 +               file->f_xid = 0;
2991                 file_free(file);
2992         }
2993  }
2994 diff -NurpP --minimal linux-4.9.76/fs/fs_struct.c linux-4.9.76-vs2.3.9.5/fs/fs_struct.c
2995 --- linux-4.9.76/fs/fs_struct.c 2016-12-11 19:17:54.000000000 +0000
2996 +++ linux-4.9.76-vs2.3.9.5/fs/fs_struct.c       2018-01-10 02:50:49.000000000 +0000
2997 @@ -4,6 +4,7 @@
2998  #include <linux/path.h>
2999  #include <linux/slab.h>
3000  #include <linux/fs_struct.h>
3001 +#include <linux/vserver/global.h>
3002  #include "internal.h"
3003
3004  /*
3005 @@ -87,6 +88,7 @@ void free_fs_struct(struct fs_struct *fs
3006  {
3007         path_put(&fs->root);
3008         path_put(&fs->pwd);
3009 +       atomic_dec(&vs_global_fs);
3010         kmem_cache_free(fs_cachep, fs);
3011  }
3012
3013 @@ -124,6 +126,7 @@ struct fs_struct *copy_fs_struct(struct
3014                 fs->pwd = old->pwd;
3015                 path_get(&fs->pwd);
3016                 spin_unlock(&old->lock);
3017 +               atomic_inc(&vs_global_fs);
3018         }
3019         return fs;
3020  }
3021 diff -NurpP --minimal linux-4.9.76/fs/gfs2/file.c linux-4.9.76-vs2.3.9.5/fs/gfs2/file.c
3022 --- linux-4.9.76/fs/gfs2/file.c 2018-01-13 21:28:57.000000000 +0000
3023 +++ linux-4.9.76-vs2.3.9.5/fs/gfs2/file.c       2018-01-10 02:50:49.000000000 +0000
3024 @@ -137,6 +137,9 @@ static const u32 fsflags_to_gfs2[32] = {
3025         [12] = GFS2_DIF_EXHASH,
3026         [14] = GFS2_DIF_INHERIT_JDATA,
3027         [17] = GFS2_DIF_TOPDIR,
3028 +       [27] = GFS2_DIF_IXUNLINK,
3029 +       [26] = GFS2_DIF_BARRIER,
3030 +       [29] = GFS2_DIF_COW,
3031  };
3032
3033  static const u32 gfs2_to_fsflags[32] = {
3034 @@ -147,6 +150,9 @@ static const u32 gfs2_to_fsflags[32] = {
3035         [gfs2fl_ExHash] = FS_INDEX_FL,
3036         [gfs2fl_TopLevel] = FS_TOPDIR_FL,
3037         [gfs2fl_InheritJdata] = FS_JOURNAL_DATA_FL,
3038 +       [gfs2fl_IXUnlink] = FS_IXUNLINK_FL,
3039 +       [gfs2fl_Barrier] = FS_BARRIER_FL,
3040 +       [gfs2fl_Cow] = FS_COW_FL,
3041  };
3042
3043  static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
3044 @@ -178,12 +184,17 @@ void gfs2_set_inode_flags(struct inode *
3045  {
3046         struct gfs2_inode *ip = GFS2_I(inode);
3047         unsigned int flags = inode->i_flags;
3048 +       unsigned int vflags = inode->i_vflags;
3049 +
3050 +       flags &= ~(S_IMMUTABLE | S_IXUNLINK |
3051 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC | S_NOSEC);
3052
3053 -       flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_NOSEC);
3054         if ((ip->i_eattr == 0) && !is_sxid(inode->i_mode))
3055                 flags |= S_NOSEC;
3056         if (ip->i_diskflags & GFS2_DIF_IMMUTABLE)
3057                 flags |= S_IMMUTABLE;
3058 +       if (ip->i_diskflags & GFS2_DIF_IXUNLINK)
3059 +               flags |= S_IXUNLINK;
3060         if (ip->i_diskflags & GFS2_DIF_APPENDONLY)
3061                 flags |= S_APPEND;
3062         if (ip->i_diskflags & GFS2_DIF_NOATIME)
3063 @@ -191,6 +202,43 @@ void gfs2_set_inode_flags(struct inode *
3064         if (ip->i_diskflags & GFS2_DIF_SYNC)
3065                 flags |= S_SYNC;
3066         inode->i_flags = flags;
3067 +
3068 +       vflags &= ~(V_BARRIER | V_COW);
3069 +
3070 +       if (ip->i_diskflags & GFS2_DIF_BARRIER)
3071 +               vflags |= V_BARRIER;
3072 +       if (ip->i_diskflags & GFS2_DIF_COW)
3073 +               vflags |= V_COW;
3074 +       inode->i_vflags = vflags;
3075 +}
3076 +
3077 +void gfs2_get_inode_flags(struct inode *inode)
3078 +{
3079 +       struct gfs2_inode *ip = GFS2_I(inode);
3080 +       unsigned int flags = inode->i_flags;
3081 +       unsigned int vflags = inode->i_vflags;
3082 +
3083 +       ip->i_diskflags &= ~(GFS2_DIF_APPENDONLY |
3084 +                       GFS2_DIF_NOATIME | GFS2_DIF_SYNC |
3085 +                       GFS2_DIF_IMMUTABLE | GFS2_DIF_IXUNLINK |
3086 +                       GFS2_DIF_BARRIER | GFS2_DIF_COW);
3087 +
3088 +       if (flags & S_IMMUTABLE)
3089 +               ip->i_diskflags |= GFS2_DIF_IMMUTABLE;
3090 +       if (flags & S_IXUNLINK)
3091 +               ip->i_diskflags |= GFS2_DIF_IXUNLINK;
3092 +
3093 +       if (flags & S_APPEND)
3094 +               ip->i_diskflags |= GFS2_DIF_APPENDONLY;
3095 +       if (flags & S_NOATIME)
3096 +               ip->i_diskflags |= GFS2_DIF_NOATIME;
3097 +       if (flags & S_SYNC)
3098 +               ip->i_diskflags |= GFS2_DIF_SYNC;
3099 +
3100 +       if (vflags & V_BARRIER)
3101 +               ip->i_diskflags |= GFS2_DIF_BARRIER;
3102 +       if (vflags & V_COW)
3103 +               ip->i_diskflags |= GFS2_DIF_COW;
3104  }
3105
3106  /* Flags that can be set by user space */
3107 @@ -306,6 +354,37 @@ static int gfs2_set_flags(struct file *f
3108         return do_gfs2_set_flags(filp, gfsflags, ~(GFS2_DIF_SYSTEM | GFS2_DIF_JDATA));
3109  }
3110
3111 +int gfs2_sync_flags(struct inode *inode, int flags, int vflags)
3112 +{
3113 +       struct gfs2_inode *ip = GFS2_I(inode);
3114 +       struct gfs2_sbd *sdp = GFS2_SB(inode);
3115 +       struct buffer_head *bh;
3116 +       struct gfs2_holder gh;
3117 +       int error;
3118 +
3119 +       error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
3120 +       if (error)
3121 +               return error;
3122 +       error = gfs2_trans_begin(sdp, RES_DINODE, 0);
3123 +       if (error)
3124 +               goto out;
3125 +       error = gfs2_meta_inode_buffer(ip, &bh);
3126 +       if (error)
3127 +               goto out_trans_end;
3128 +       gfs2_trans_add_meta(ip->i_gl, bh);
3129 +       inode->i_flags = flags;
3130 +       inode->i_vflags = vflags;
3131 +       gfs2_get_inode_flags(inode);
3132 +       gfs2_dinode_out(ip, bh->b_data);
3133 +       brelse(bh);
3134 +       gfs2_set_aops(inode);
3135 +out_trans_end:
3136 +       gfs2_trans_end(sdp);
3137 +out:
3138 +       gfs2_glock_dq_uninit(&gh);
3139 +       return error;
3140 +}
3141 +
3142  static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3143  {
3144         switch(cmd) {
3145 diff -NurpP --minimal linux-4.9.76/fs/gfs2/inode.h linux-4.9.76-vs2.3.9.5/fs/gfs2/inode.h
3146 --- linux-4.9.76/fs/gfs2/inode.h        2016-12-11 19:17:54.000000000 +0000
3147 +++ linux-4.9.76-vs2.3.9.5/fs/gfs2/inode.h      2018-01-10 02:50:49.000000000 +0000
3148 @@ -117,6 +117,7 @@ extern const struct file_operations gfs2
3149  extern const struct file_operations gfs2_dir_fops_nolock;
3150
3151  extern void gfs2_set_inode_flags(struct inode *inode);
3152 +extern int gfs2_sync_flags(struct inode *inode, int flags, int vflags);
3153
3154  #ifdef CONFIG_GFS2_FS_LOCKING_DLM
3155  extern const struct file_operations gfs2_file_fops;
3156 diff -NurpP --minimal linux-4.9.76/fs/hostfs/hostfs.h linux-4.9.76-vs2.3.9.5/fs/hostfs/hostfs.h
3157 --- linux-4.9.76/fs/hostfs/hostfs.h     2016-12-11 19:17:54.000000000 +0000
3158 +++ linux-4.9.76-vs2.3.9.5/fs/hostfs/hostfs.h   2018-01-10 02:50:49.000000000 +0000
3159 @@ -42,6 +42,7 @@ struct hostfs_iattr {
3160         unsigned short  ia_mode;
3161         uid_t           ia_uid;
3162         gid_t           ia_gid;
3163 +       vtag_t          ia_tag;
3164         loff_t          ia_size;
3165         struct timespec ia_atime;
3166         struct timespec ia_mtime;
3167 diff -NurpP --minimal linux-4.9.76/fs/inode.c linux-4.9.76-vs2.3.9.5/fs/inode.c
3168 --- linux-4.9.76/fs/inode.c     2018-01-13 21:28:57.000000000 +0000
3169 +++ linux-4.9.76-vs2.3.9.5/fs/inode.c   2018-01-10 02:50:49.000000000 +0000
3170 @@ -18,6 +18,7 @@
3171  #include <linux/buffer_head.h> /* for inode_has_buffers */
3172  #include <linux/ratelimit.h>
3173  #include <linux/list_lru.h>
3174 +#include <linux/vs_tag.h>
3175  #include <trace/events/writeback.h>
3176  #include "internal.h"
3177
3178 @@ -133,6 +134,8 @@ int inode_init_always(struct super_block
3179         struct address_space *const mapping = &inode->i_data;
3180
3181         inode->i_sb = sb;
3182 +
3183 +       /* essential because of inode slab reuse */
3184         inode->i_blkbits = sb->s_blocksize_bits;
3185         inode->i_flags = 0;
3186         atomic_set(&inode->i_count, 1);
3187 @@ -144,6 +147,7 @@ int inode_init_always(struct super_block
3188                 inode->i_opflags |= IOP_XATTR;
3189         i_uid_write(inode, 0);
3190         i_gid_write(inode, 0);
3191 +       i_tag_write(inode, 0);
3192         atomic_set(&inode->i_writecount, 0);
3193         inode->i_size = 0;
3194         inode->i_blocks = 0;
3195 @@ -155,6 +159,7 @@ int inode_init_always(struct super_block
3196         inode->i_link = NULL;
3197         inode->i_dir_seq = 0;
3198         inode->i_rdev = 0;
3199 +       inode->i_mdev = 0;
3200         inode->dirtied_when = 0;
3201
3202  #ifdef CONFIG_CGROUP_WRITEBACK
3203 @@ -479,6 +484,8 @@ void __insert_inode_hash(struct inode *i
3204  }
3205  EXPORT_SYMBOL(__insert_inode_hash);
3206
3207 +EXPORT_SYMBOL_GPL(__iget);
3208 +
3209  /**
3210   *     __remove_inode_hash - remove an inode from the hash
3211   *     @inode: inode to unhash
3212 @@ -1977,9 +1984,11 @@ void init_special_inode(struct inode *in
3213         if (S_ISCHR(mode)) {
3214                 inode->i_fop = &def_chr_fops;
3215                 inode->i_rdev = rdev;
3216 +               inode->i_mdev = rdev;
3217         } else if (S_ISBLK(mode)) {
3218                 inode->i_fop = &def_blk_fops;
3219                 inode->i_rdev = rdev;
3220 +               inode->i_mdev = rdev;
3221         } else if (S_ISFIFO(mode))
3222                 inode->i_fop = &pipefifo_fops;
3223         else if (S_ISSOCK(mode))
3224 @@ -2008,6 +2017,7 @@ void inode_init_owner(struct inode *inod
3225         } else
3226                 inode->i_gid = current_fsgid();
3227         inode->i_mode = mode;
3228 +       i_tag_write(inode, dx_current_fstag(inode->i_sb));
3229  }
3230  EXPORT_SYMBOL(inode_init_owner);
3231
3232 diff -NurpP --minimal linux-4.9.76/fs/ioctl.c linux-4.9.76-vs2.3.9.5/fs/ioctl.c
3233 --- linux-4.9.76/fs/ioctl.c     2016-12-11 19:17:54.000000000 +0000
3234 +++ linux-4.9.76-vs2.3.9.5/fs/ioctl.c   2018-01-13 01:03:36.000000000 +0000
3235 @@ -15,6 +15,9 @@
3236  #include <linux/writeback.h>
3237  #include <linux/buffer_head.h>
3238  #include <linux/falloc.h>
3239 +#include <linux/proc_fs.h>
3240 +#include <linux/vserver/inode.h>
3241 +#include <linux/vs_tag.h>
3242  #include "internal.h"
3243
3244  #include <asm/ioctls.h>
3245 diff -NurpP --minimal linux-4.9.76/fs/jfs/file.c linux-4.9.76-vs2.3.9.5/fs/jfs/file.c
3246 --- linux-4.9.76/fs/jfs/file.c  2016-12-11 19:17:54.000000000 +0000
3247 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/file.c        2018-01-10 02:50:49.000000000 +0000
3248 @@ -113,7 +113,8 @@ int jfs_setattr(struct dentry *dentry, s
3249                         return rc;
3250         }
3251         if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
3252 -           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
3253 +           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid)) ||
3254 +           (iattr->ia_valid & ATTR_TAG && !tag_eq(iattr->ia_tag, inode->i_tag))) {
3255                 rc = dquot_transfer(inode, iattr);
3256                 if (rc)
3257                         return rc;
3258 @@ -146,6 +147,7 @@ const struct inode_operations jfs_file_i
3259         .get_acl        = jfs_get_acl,
3260         .set_acl        = jfs_set_acl,
3261  #endif
3262 +       .sync_flags     = jfs_sync_flags,
3263  };
3264
3265  const struct file_operations jfs_file_operations = {
3266 diff -NurpP --minimal linux-4.9.76/fs/jfs/ioctl.c linux-4.9.76-vs2.3.9.5/fs/jfs/ioctl.c
3267 --- linux-4.9.76/fs/jfs/ioctl.c 2016-12-11 19:17:54.000000000 +0000
3268 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/ioctl.c       2018-01-10 02:50:49.000000000 +0000
3269 @@ -12,6 +12,7 @@
3270  #include <linux/time.h>
3271  #include <linux/sched.h>
3272  #include <linux/blkdev.h>
3273 +#include <linux/mount.h>
3274  #include <asm/current.h>
3275  #include <asm/uaccess.h>
3276
3277 @@ -56,6 +57,16 @@ static long jfs_map_ext2(unsigned long f
3278  }
3279
3280
3281 +int jfs_sync_flags(struct inode *inode, int flags, int vflags)
3282 +{
3283 +       inode->i_flags = flags;
3284 +       inode->i_vflags = vflags;
3285 +       jfs_get_inode_flags(JFS_IP(inode));
3286 +       inode->i_ctime = CURRENT_TIME_SEC;
3287 +       mark_inode_dirty(inode);
3288 +       return 0;
3289 +}
3290 +
3291  long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3292  {
3293         struct inode *inode = file_inode(filp);
3294 @@ -89,6 +100,11 @@ long jfs_ioctl(struct file *filp, unsign
3295                 if (!S_ISDIR(inode->i_mode))
3296                         flags &= ~JFS_DIRSYNC_FL;
3297
3298 +               if (IS_BARRIER(inode)) {
3299 +                       vxwprintk_task(1, "messing with the barrier.");
3300 +                       return -EACCES;
3301 +               }
3302 +
3303                 /* Is it quota file? Do not allow user to mess with it */
3304                 if (IS_NOQUOTA(inode)) {
3305                         err = -EPERM;
3306 @@ -106,8 +122,8 @@ long jfs_ioctl(struct file *filp, unsign
3307                  * the relevant capability.
3308                  */
3309                 if ((oldflags & JFS_IMMUTABLE_FL) ||
3310 -                       ((flags ^ oldflags) &
3311 -                       (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) {
3312 +                       ((flags ^ oldflags) & (JFS_APPEND_FL |
3313 +                       JFS_IMMUTABLE_FL | JFS_IXUNLINK_FL))) {
3314                         if (!capable(CAP_LINUX_IMMUTABLE)) {
3315                                 inode_unlock(inode);
3316                                 err = -EPERM;
3317 @@ -115,7 +131,7 @@ long jfs_ioctl(struct file *filp, unsign
3318                         }
3319                 }
3320
3321 -               flags = flags & JFS_FL_USER_MODIFIABLE;
3322 +               flags &= JFS_FL_USER_MODIFIABLE;
3323                 flags |= oldflags & ~JFS_FL_USER_MODIFIABLE;
3324                 jfs_inode->mode2 = flags;
3325
3326 diff -NurpP --minimal linux-4.9.76/fs/jfs/jfs_dinode.h linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_dinode.h
3327 --- linux-4.9.76/fs/jfs/jfs_dinode.h    2016-12-11 19:17:54.000000000 +0000
3328 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_dinode.h  2018-01-10 02:50:49.000000000 +0000
3329 @@ -161,9 +161,13 @@ struct dinode {
3330
3331  #define JFS_APPEND_FL          0x01000000 /* writes to file may only append */
3332  #define JFS_IMMUTABLE_FL       0x02000000 /* Immutable file */
3333 +#define JFS_IXUNLINK_FL                0x08000000 /* Immutable invert on unlink */
3334
3335 -#define JFS_FL_USER_VISIBLE    0x03F80000
3336 -#define JFS_FL_USER_MODIFIABLE 0x03F80000
3337 +#define JFS_BARRIER_FL         0x04000000 /* Barrier for chroot() */
3338 +#define JFS_COW_FL             0x20000000 /* Copy on Write marker */
3339 +
3340 +#define JFS_FL_USER_VISIBLE    0x07F80000
3341 +#define JFS_FL_USER_MODIFIABLE 0x07F80000
3342  #define JFS_FL_INHERIT         0x03C80000
3343
3344  /* These are identical to EXT[23]_IOC_GETFLAGS/SETFLAGS */
3345 diff -NurpP --minimal linux-4.9.76/fs/jfs/jfs_filsys.h linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_filsys.h
3346 --- linux-4.9.76/fs/jfs/jfs_filsys.h    2016-12-11 19:17:54.000000000 +0000
3347 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_filsys.h  2018-01-10 02:50:49.000000000 +0000
3348 @@ -266,6 +266,7 @@
3349  #define JFS_NAME_MAX   255
3350  #define JFS_PATH_MAX   BPSIZE
3351
3352 +#define JFS_TAGGED             0x00800000      /* Context Tagging */
3353
3354  /*
3355   *     file system state (superblock state)
3356 diff -NurpP --minimal linux-4.9.76/fs/jfs/jfs_imap.c linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_imap.c
3357 --- linux-4.9.76/fs/jfs/jfs_imap.c      2016-12-11 19:17:54.000000000 +0000
3358 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_imap.c    2018-01-10 02:50:49.000000000 +0000
3359 @@ -46,6 +46,7 @@
3360  #include <linux/pagemap.h>
3361  #include <linux/quotaops.h>
3362  #include <linux/slab.h>
3363 +#include <linux/vs_tag.h>
3364
3365  #include "jfs_incore.h"
3366  #include "jfs_inode.h"
3367 @@ -3046,6 +3047,8 @@ static int copy_from_dinode(struct dinod
3368  {
3369         struct jfs_inode_info *jfs_ip = JFS_IP(ip);
3370         struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
3371 +       kuid_t kuid;
3372 +       kgid_t kgid;
3373
3374         jfs_ip->fileset = le32_to_cpu(dip->di_fileset);
3375         jfs_ip->mode2 = le32_to_cpu(dip->di_mode);
3376 @@ -3066,14 +3069,18 @@ static int copy_from_dinode(struct dinod
3377         }
3378         set_nlink(ip, le32_to_cpu(dip->di_nlink));
3379
3380 -       jfs_ip->saved_uid = make_kuid(&init_user_ns, le32_to_cpu(dip->di_uid));
3381 +       kuid = make_kuid(&init_user_ns, le32_to_cpu(dip->di_uid));
3382 +       kgid = make_kgid(&init_user_ns, le32_to_cpu(dip->di_gid));
3383 +       ip->i_tag = INOTAG_KTAG(DX_TAG(ip), kuid, kgid, GLOBAL_ROOT_TAG);
3384 +
3385 +       jfs_ip->saved_uid = INOTAG_KUID(DX_TAG(ip), kuid, kgid);
3386         if (!uid_valid(sbi->uid))
3387                 ip->i_uid = jfs_ip->saved_uid;
3388         else {
3389                 ip->i_uid = sbi->uid;
3390         }
3391
3392 -       jfs_ip->saved_gid = make_kgid(&init_user_ns, le32_to_cpu(dip->di_gid));
3393 +       jfs_ip->saved_gid = INOTAG_KGID(DX_TAG(ip), kuid, kgid);
3394         if (!gid_valid(sbi->gid))
3395                 ip->i_gid = jfs_ip->saved_gid;
3396         else {
3397 @@ -3138,16 +3145,14 @@ static void copy_to_dinode(struct dinode
3398         dip->di_size = cpu_to_le64(ip->i_size);
3399         dip->di_nblocks = cpu_to_le64(PBLK2LBLK(ip->i_sb, ip->i_blocks));
3400         dip->di_nlink = cpu_to_le32(ip->i_nlink);
3401 -       if (!uid_valid(sbi->uid))
3402 -               dip->di_uid = cpu_to_le32(i_uid_read(ip));
3403 -       else
3404 -               dip->di_uid =cpu_to_le32(from_kuid(&init_user_ns,
3405 -                                                  jfs_ip->saved_uid));
3406 -       if (!gid_valid(sbi->gid))
3407 -               dip->di_gid = cpu_to_le32(i_gid_read(ip));
3408 -       else
3409 -               dip->di_gid = cpu_to_le32(from_kgid(&init_user_ns,
3410 -                                                   jfs_ip->saved_gid));
3411 +       dip->di_uid = cpu_to_le32(from_kuid(&init_user_ns,
3412 +               TAGINO_KUID(DX_TAG(ip),
3413 +               !uid_valid(sbi->uid) ? ip->i_uid : jfs_ip->saved_uid,
3414 +               ip->i_tag)));
3415 +       dip->di_gid = cpu_to_le32(from_kgid(&init_user_ns,
3416 +               TAGINO_KGID(DX_TAG(ip),
3417 +               !gid_valid(sbi->gid) ? ip->i_gid : jfs_ip->saved_gid,
3418 +               ip->i_tag)));
3419         jfs_get_inode_flags(jfs_ip);
3420         /*
3421          * mode2 is only needed for storing the higher order bits.
3422 diff -NurpP --minimal linux-4.9.76/fs/jfs/jfs_inode.c linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_inode.c
3423 --- linux-4.9.76/fs/jfs/jfs_inode.c     2016-12-11 19:17:54.000000000 +0000
3424 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_inode.c   2018-01-14 06:01:31.000000000 +0000
3425 @@ -18,6 +18,7 @@
3426
3427  #include <linux/fs.h>
3428  #include <linux/quotaops.h>
3429 +#include <linux/vs_tag.h>
3430  #include "jfs_incore.h"
3431  #include "jfs_inode.h"
3432  #include "jfs_filsys.h"
3433 @@ -33,6 +34,9 @@ void jfs_set_inode_flags(struct inode *i
3434
3435         if (flags & JFS_IMMUTABLE_FL)
3436                 new_fl |= S_IMMUTABLE;
3437 +       if (flags & JFS_IXUNLINK_FL)
3438 +               new_fl |= S_IXUNLINK;
3439 +
3440         if (flags & JFS_APPEND_FL)
3441                 new_fl |= S_APPEND;
3442         if (flags & JFS_NOATIME_FL)
3443 @@ -41,18 +45,35 @@ void jfs_set_inode_flags(struct inode *i
3444                 new_fl |= S_DIRSYNC;
3445         if (flags & JFS_SYNC_FL)
3446                 new_fl |= S_SYNC;
3447 -       inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME |
3448 -                       S_DIRSYNC | S_SYNC);
3449 +
3450 +       inode_set_flags(inode, new_fl, S_IMMUTABLE | S_IXUNLINK |
3451 +                       S_APPEND | S_NOATIME | S_DIRSYNC | S_SYNC);
3452 +
3453 +       new_fl = 0;
3454 +       if (flags & JFS_BARRIER_FL)
3455 +               new_fl |= V_BARRIER;
3456 +       if (flags & JFS_COW_FL)
3457 +               new_fl |= V_COW;
3458 +
3459 +       set_mask_bits(&inode->i_vflags,
3460 +               V_BARRIER | V_COW, new_fl);
3461  }
3462
3463  void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
3464  {
3465         unsigned int flags = jfs_ip->vfs_inode.i_flags;
3466 +       unsigned int vflags = jfs_ip->vfs_inode.i_vflags;
3467 +
3468 +       jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_IXUNLINK_FL |
3469 +                          JFS_APPEND_FL | JFS_NOATIME_FL |
3470 +                          JFS_DIRSYNC_FL | JFS_SYNC_FL |
3471 +                          JFS_BARRIER_FL | JFS_COW_FL);
3472
3473 -       jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
3474 -                          JFS_DIRSYNC_FL | JFS_SYNC_FL);
3475         if (flags & S_IMMUTABLE)
3476                 jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
3477 +       if (flags & S_IXUNLINK)
3478 +               jfs_ip->mode2 |= JFS_IXUNLINK_FL;
3479 +
3480         if (flags & S_APPEND)
3481                 jfs_ip->mode2 |= JFS_APPEND_FL;
3482         if (flags & S_NOATIME)
3483 @@ -61,6 +82,11 @@ void jfs_get_inode_flags(struct jfs_inod
3484                 jfs_ip->mode2 |= JFS_DIRSYNC_FL;
3485         if (flags & S_SYNC)
3486                 jfs_ip->mode2 |= JFS_SYNC_FL;
3487 +
3488 +       if (vflags & V_BARRIER)
3489 +               jfs_ip->mode2 |= JFS_BARRIER_FL;
3490 +       if (vflags & V_COW)
3491 +               jfs_ip->mode2 |= JFS_COW_FL;
3492  }
3493
3494  /*
3495 diff -NurpP --minimal linux-4.9.76/fs/jfs/jfs_inode.h linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_inode.h
3496 --- linux-4.9.76/fs/jfs/jfs_inode.h     2016-12-11 19:17:54.000000000 +0000
3497 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/jfs_inode.h   2018-01-10 02:50:49.000000000 +0000
3498 @@ -39,6 +39,7 @@ extern struct dentry *jfs_fh_to_dentry(s
3499  extern struct dentry *jfs_fh_to_parent(struct super_block *sb, struct fid *fid,
3500         int fh_len, int fh_type);
3501  extern void jfs_set_inode_flags(struct inode *);
3502 +extern int jfs_sync_flags(struct inode *, int, int);
3503  extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
3504  extern int jfs_setattr(struct dentry *, struct iattr *);
3505
3506 diff -NurpP --minimal linux-4.9.76/fs/jfs/namei.c linux-4.9.76-vs2.3.9.5/fs/jfs/namei.c
3507 --- linux-4.9.76/fs/jfs/namei.c 2016-12-11 19:17:54.000000000 +0000
3508 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/namei.c       2018-01-10 02:50:49.000000000 +0000
3509 @@ -22,6 +22,7 @@
3510  #include <linux/ctype.h>
3511  #include <linux/quotaops.h>
3512  #include <linux/exportfs.h>
3513 +#include <linux/vs_tag.h>
3514  #include "jfs_incore.h"
3515  #include "jfs_superblock.h"
3516  #include "jfs_inode.h"
3517 @@ -1484,6 +1485,7 @@ static struct dentry *jfs_lookup(struct
3518                         jfs_err("jfs_lookup: iget failed on inum %d", (uint)inum);
3519         }
3520
3521 +       dx_propagate_tag(nd, ip);
3522         return d_splice_alias(ip, dentry);
3523  }
3524
3525 @@ -1546,6 +1548,7 @@ const struct inode_operations jfs_dir_in
3526         .get_acl        = jfs_get_acl,
3527         .set_acl        = jfs_set_acl,
3528  #endif
3529 +       .sync_flags     = jfs_sync_flags,
3530  };
3531
3532  const struct file_operations jfs_dir_operations = {
3533 diff -NurpP --minimal linux-4.9.76/fs/jfs/super.c linux-4.9.76-vs2.3.9.5/fs/jfs/super.c
3534 --- linux-4.9.76/fs/jfs/super.c 2018-01-13 21:28:57.000000000 +0000
3535 +++ linux-4.9.76-vs2.3.9.5/fs/jfs/super.c       2018-01-10 02:50:49.000000000 +0000
3536 @@ -206,7 +206,8 @@ enum {
3537         Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
3538         Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota,
3539         Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask,
3540 -       Opt_discard, Opt_nodiscard, Opt_discard_minblk
3541 +       Opt_discard, Opt_nodiscard, Opt_discard_minblk,
3542 +       Opt_tag, Opt_notag, Opt_tagid
3543  };
3544
3545  static const match_table_t tokens = {
3546 @@ -216,6 +217,10 @@ static const match_table_t tokens = {
3547         {Opt_resize, "resize=%u"},
3548         {Opt_resize_nosize, "resize"},
3549         {Opt_errors, "errors=%s"},
3550 +       {Opt_tag, "tag"},
3551 +       {Opt_notag, "notag"},
3552 +       {Opt_tagid, "tagid=%u"},
3553 +       {Opt_tag, "tagxid"},
3554         {Opt_ignore, "noquota"},
3555         {Opt_ignore, "quota"},
3556         {Opt_usrquota, "usrquota"},
3557 @@ -405,7 +410,20 @@ static int parse_options(char *options,
3558                                 pr_err("JFS: discard option not supported on device\n");
3559                         break;
3560                 }
3561 -
3562 +#ifndef CONFIG_TAGGING_NONE
3563 +               case Opt_tag:
3564 +                       *flag |= JFS_TAGGED;
3565 +                       break;
3566 +               case Opt_notag:
3567 +                       *flag &= JFS_TAGGED;
3568 +                       break;
3569 +#endif
3570 +#ifdef CONFIG_PROPAGATE
3571 +               case Opt_tagid:
3572 +                       /* use args[0] */
3573 +                       *flag |= JFS_TAGGED;
3574 +                       break;
3575 +#endif
3576                 default:
3577                         printk("jfs: Unrecognized mount option \"%s\" or missing value\n",
3578                                p);
3579 @@ -437,6 +455,12 @@ static int jfs_remount(struct super_bloc
3580         if (!parse_options(data, sb, &newLVSize, &flag))
3581                 return -EINVAL;
3582
3583 +       if ((flag & JFS_TAGGED) && !(sb->s_flags & MS_TAGGED)) {
3584 +               printk(KERN_ERR "JFS: %s: tagging not permitted on remount.\n",
3585 +                       sb->s_id);
3586 +               return -EINVAL;
3587 +       }
3588 +
3589         if (newLVSize) {
3590                 if (sb->s_flags & MS_RDONLY) {
3591                         pr_err("JFS: resize requires volume to be mounted read-write\n");
3592 @@ -517,6 +541,9 @@ static int jfs_fill_super(struct super_b
3593  #ifdef CONFIG_JFS_POSIX_ACL
3594         sb->s_flags |= MS_POSIXACL;
3595  #endif
3596 +       /* map mount option tagxid */
3597 +       if (sbi->flag & JFS_TAGGED)
3598 +               sb->s_flags |= MS_TAGGED;
3599
3600         if (newLVSize) {
3601                 pr_err("resize option for remount only\n");
3602 diff -NurpP --minimal linux-4.9.76/fs/libfs.c linux-4.9.76-vs2.3.9.5/fs/libfs.c
3603 --- linux-4.9.76/fs/libfs.c     2018-01-13 21:28:57.000000000 +0000
3604 +++ linux-4.9.76-vs2.3.9.5/fs/libfs.c   2018-01-13 01:03:09.000000000 +0000
3605 @@ -180,7 +180,8 @@ static inline unsigned char dt_type(stru
3606   * both impossible due to the lock on directory.
3607   */
3608
3609 -int dcache_readdir(struct file *file, struct dir_context *ctx)
3610 +static inline int do_dcache_readdir_filter(struct file *file,
3611 +       struct dir_context *ctx, int (*filter)(struct dentry *dentry))
3612  {
3613         struct dentry *dentry = file->f_path.dentry;
3614         struct dentry *cursor = file->private_data;
3615 @@ -194,9 +195,10 @@ int dcache_readdir(struct file *file, st
3616         if (ctx->pos == 2)
3617                 p = &dentry->d_subdirs;
3618         while ((next = next_positive(dentry, p, 1)) != NULL) {
3619 -               if (!dir_emit(ctx, next->d_name.name, next->d_name.len,
3620 +               if (!filter || filter(next))
3621 +                       if (!dir_emit(ctx, next->d_name.name, next->d_name.len,
3622                               d_inode(next)->i_ino, dt_type(d_inode(next))))
3623 -                       break;
3624 +                               break;
3625                 moved = true;
3626                 p = &next->d_child;
3627                 ctx->pos++;
3628 @@ -205,8 +207,22 @@ int dcache_readdir(struct file *file, st
3629                 move_cursor(cursor, p);
3630         return 0;
3631  }
3632 +
3633  EXPORT_SYMBOL(dcache_readdir);
3634
3635 +int dcache_readdir(struct file *filp, struct dir_context *ctx)
3636 +{
3637 +       return do_dcache_readdir_filter(filp, ctx, NULL);
3638 +}
3639 +
3640 +EXPORT_SYMBOL(dcache_readdir_filter);
3641 +
3642 +int dcache_readdir_filter(struct file *filp, struct dir_context *ctx,
3643 +       int (*filter)(struct dentry *))
3644 +{
3645 +       return do_dcache_readdir_filter(filp, ctx, filter);
3646 +}
3647 +
3648  ssize_t generic_read_dir(struct file *filp, char __user *buf, size_t siz, loff_t *ppos)
3649  {
3650         return -EISDIR;
3651 diff -NurpP --minimal linux-4.9.76/fs/locks.c linux-4.9.76-vs2.3.9.5/fs/locks.c
3652 --- linux-4.9.76/fs/locks.c     2016-12-11 19:17:54.000000000 +0000
3653 +++ linux-4.9.76-vs2.3.9.5/fs/locks.c   2018-01-13 01:28:30.000000000 +0000
3654 @@ -127,6 +127,8 @@
3655  #include <linux/pid_namespace.h>
3656  #include <linux/hashtable.h>
3657  #include <linux/percpu.h>
3658 +#include <linux/vs_base.h>
3659 +#include <linux/vs_limit.h>
3660
3661  #define CREATE_TRACE_POINTS
3662  #include <trace/events/filelock.h>
3663 @@ -292,11 +294,15 @@ static void locks_init_lock_heads(struct
3664  /* Allocate an empty lock structure. */
3665  struct file_lock *locks_alloc_lock(void)
3666  {
3667 -       struct file_lock *fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
3668 +       struct file_lock *fl;
3669
3670 -       if (fl)
3671 -               locks_init_lock_heads(fl);
3672 +       fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
3673
3674 +       if (fl) {
3675 +               locks_init_lock_heads(fl);
3676 +               vx_locks_inc(fl);
3677 +               fl->fl_xid = -1;
3678 +       }
3679         return fl;
3680  }
3681  EXPORT_SYMBOL_GPL(locks_alloc_lock);
3682 @@ -348,6 +354,7 @@ void locks_init_lock(struct file_lock *f
3683  {
3684         memset(fl, 0, sizeof(struct file_lock));
3685         locks_init_lock_heads(fl);
3686 +       fl->fl_xid = -1;
3687  }
3688
3689  EXPORT_SYMBOL(locks_init_lock);
3690 @@ -365,6 +372,7 @@ void locks_copy_conflock(struct file_loc
3691         new->fl_start = fl->fl_start;
3692         new->fl_end = fl->fl_end;
3693         new->fl_lmops = fl->fl_lmops;
3694 +       new->fl_xid = fl->fl_xid;
3695         new->fl_ops = NULL;
3696
3697         if (fl->fl_lmops) {
3698 @@ -426,7 +434,10 @@ flock_make_lock(struct file *filp, unsig
3699         fl->fl_flags = FL_FLOCK;
3700         fl->fl_type = type;
3701         fl->fl_end = OFFSET_MAX;
3702 -
3703 +
3704 +       vxd_assert(filp->f_xid == vx_current_xid(),
3705 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3706 +       fl->fl_xid = filp->f_xid;
3707         return fl;
3708  }
3709
3710 @@ -548,6 +559,7 @@ static int lease_init(struct file *filp,
3711
3712         fl->fl_owner = filp;
3713         fl->fl_pid = current->tgid;
3714 +       fl->fl_xid = vx_current_xid();
3715
3716         fl->fl_file = filp;
3717         fl->fl_flags = FL_LEASE;
3718 @@ -567,6 +579,10 @@ static struct file_lock *lease_alloc(str
3719         if (fl == NULL)
3720                 return ERR_PTR(error);
3721
3722 +       fl->fl_xid = vx_current_xid();
3723 +       if (filp)
3724 +               vxd_assert(filp->f_xid == fl->fl_xid,
3725 +                       "f_xid(%d) == fl_xid(%d)", filp->f_xid, fl->fl_xid);
3726         error = lease_init(filp, type, fl);
3727         if (error) {
3728                 locks_free_lock(fl);
3729 @@ -956,6 +972,7 @@ static int flock_lock_inode(struct inode
3730                 goto out;
3731         }
3732
3733 +       new_fl->fl_xid = -1;
3734  find_conflict:
3735         list_for_each_entry(fl, &ctx->flc_flock, fl_list) {
3736                 if (!flock_locks_conflict(request, fl))
3737 @@ -984,7 +1001,7 @@ out:
3738  }
3739
3740  static int posix_lock_inode(struct inode *inode, struct file_lock *request,
3741 -                           struct file_lock *conflock)
3742 +                           struct file_lock *conflock, vxid_t xid)
3743  {
3744         struct file_lock *fl, *tmp;
3745         struct file_lock *new_fl = NULL;
3746 @@ -1000,6 +1017,9 @@ static int posix_lock_inode(struct inode
3747         if (!ctx)
3748                 return (request->fl_type == F_UNLCK) ? 0 : -ENOMEM;
3749
3750 +       if (xid)
3751 +               vxd_assert(xid == vx_current_xid(),
3752 +                       "xid(%d) == current(%d)", xid, vx_current_xid());
3753         /*
3754          * We may need two file_lock structures for this operation,
3755          * so we get them in advance to avoid races.
3756 @@ -1010,7 +1030,11 @@ static int posix_lock_inode(struct inode
3757             (request->fl_type != F_UNLCK ||
3758              request->fl_start != 0 || request->fl_end != OFFSET_MAX)) {
3759                 new_fl = locks_alloc_lock();
3760 +               new_fl->fl_xid = xid;
3761 +               // vx_locks_inc(new_fl);
3762                 new_fl2 = locks_alloc_lock();
3763 +               new_fl2->fl_xid = xid;
3764 +               // vx_locks_inc(new_fl2);
3765         }
3766
3767         percpu_down_read_preempt_disable(&file_rwsem);
3768 @@ -1216,7 +1240,7 @@ static int posix_lock_inode(struct inode
3769  int posix_lock_file(struct file *filp, struct file_lock *fl,
3770                         struct file_lock *conflock)
3771  {
3772 -       return posix_lock_inode(locks_inode(filp), fl, conflock);
3773 +       return posix_lock_inode(locks_inode(filp), fl, conflock, filp->f_xid);
3774  }
3775  EXPORT_SYMBOL(posix_lock_file);
3776
3777 @@ -1232,7 +1256,7 @@ static int posix_lock_inode_wait(struct
3778         int error;
3779         might_sleep ();
3780         for (;;) {
3781 -               error = posix_lock_inode(inode, fl, NULL);
3782 +               error = posix_lock_inode(inode, fl, NULL, 0);
3783                 if (error != FILE_LOCK_DEFERRED)
3784                         break;
3785                 error = wait_event_interruptible(fl->fl_wait, !fl->fl_next);
3786 @@ -1308,10 +1332,13 @@ int locks_mandatory_area(struct inode *i
3787         fl.fl_end = end;
3788
3789         for (;;) {
3790 +               vxid_t f_xid = 0;
3791 +
3792                 if (filp) {
3793                         fl.fl_owner = filp;
3794                         fl.fl_flags &= ~FL_SLEEP;
3795 -                       error = posix_lock_inode(inode, &fl, NULL);
3796 +                       f_xid = filp->f_xid;
3797 +                       error = posix_lock_inode(inode, &fl, NULL, f_xid);
3798                         if (!error)
3799                                 break;
3800                 }
3801 @@ -1319,7 +1346,7 @@ int locks_mandatory_area(struct inode *i
3802                 if (sleep)
3803                         fl.fl_flags |= FL_SLEEP;
3804                 fl.fl_owner = current->files;
3805 -               error = posix_lock_inode(inode, &fl, NULL);
3806 +               error = posix_lock_inode(inode, &fl, NULL, f_xid);
3807                 if (error != FILE_LOCK_DEFERRED)
3808                         break;
3809                 error = wait_event_interruptible(fl.fl_wait, !fl.fl_next);
3810 @@ -2374,6 +2401,16 @@ int fcntl_setlk64(unsigned int fd, struc
3811         if (file_lock == NULL)
3812                 return -ENOLCK;
3813
3814 +       vxd_assert(filp->f_xid == vx_current_xid(),
3815 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3816 +       file_lock->fl_xid = filp->f_xid;
3817 +       // vx_locks_inc(file_lock);
3818 +
3819 +       vxd_assert(filp->f_xid == vx_current_xid(),
3820 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3821 +       file_lock->fl_xid = filp->f_xid;
3822 +       // vx_locks_inc(file_lock);
3823 +
3824         /*
3825          * This might block, so we do it before checking the inode.
3826          */
3827 @@ -2710,8 +2747,11 @@ static int locks_show(struct seq_file *f
3828
3829         lock_get_status(f, fl, iter->li_pos, "");
3830
3831 -       list_for_each_entry(bfl, &fl->fl_block, fl_block)
3832 +       list_for_each_entry(bfl, &fl->fl_block, fl_block) {
3833 +               if (!vx_check(fl->fl_xid, VS_WATCH_P | VS_IDENT))
3834 +                       continue;
3835                 lock_get_status(f, bfl, iter->li_pos, " ->");
3836 +       }
3837
3838         return 0;
3839  }
3840 diff -NurpP --minimal linux-4.9.76/fs/mount.h linux-4.9.76-vs2.3.9.5/fs/mount.h
3841 --- linux-4.9.76/fs/mount.h     2018-01-13 21:28:57.000000000 +0000
3842 +++ linux-4.9.76-vs2.3.9.5/fs/mount.h   2018-01-10 02:50:49.000000000 +0000
3843 @@ -69,6 +69,7 @@ struct mount {
3844         struct hlist_head mnt_pins;
3845         struct fs_pin mnt_umount;
3846         struct dentry *mnt_ex_mountpoint;
3847 +       vtag_t mnt_tag;                 /* tagging used for vfsmount */
3848  };
3849
3850  #define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */
3851 diff -NurpP --minimal linux-4.9.76/fs/namei.c linux-4.9.76-vs2.3.9.5/fs/namei.c
3852 --- linux-4.9.76/fs/namei.c     2018-01-13 21:28:57.000000000 +0000
3853 +++ linux-4.9.76-vs2.3.9.5/fs/namei.c   2018-01-13 05:43:43.000000000 +0000
3854 @@ -37,9 +37,19 @@
3855  #include <linux/hash.h>
3856  #include <linux/bitops.h>
3857  #include <linux/init_task.h>
3858 +#include <linux/proc_fs.h>
3859 +#include <linux/magic.h>
3860 +#include <linux/vserver/inode.h>
3861 +#include <linux/vs_base.h>
3862 +#include <linux/vs_tag.h>
3863 +#include <linux/vs_cowbl.h>
3864 +#include <linux/vs_device.h>
3865 +#include <linux/vs_context.h>
3866 +#include <linux/pid_namespace.h>
3867  #include <asm/uaccess.h>
3868
3869  #include "internal.h"
3870 +#include "proc/internal.h"
3871  #include "mount.h"
3872
3873  /* [Feb-1997 T. Schoebel-Theuer]
3874 @@ -285,6 +295,93 @@ static int check_acl(struct inode *inode
3875         return -EAGAIN;
3876  }
3877
3878 +static inline int dx_barrier(const struct inode *inode)
3879 +{
3880 +       if (IS_BARRIER(inode) && !vx_check(0, VS_ADMIN | VS_WATCH)) {
3881 +               vxwprintk_task(1, "did hit the barrier.");
3882 +               return 1;
3883 +       }
3884 +       return 0;
3885 +}
3886 +
3887 +static int __dx_permission(const struct inode *inode, int mask)
3888 +{
3889 +       if (dx_barrier(inode))
3890 +               return -EACCES;
3891 +
3892 +       if (inode->i_sb->s_magic == DEVPTS_SUPER_MAGIC) {
3893 +               /* devpts is xid tagged */
3894 +               if (S_ISDIR(inode->i_mode) ||
3895 +                   vx_check((vxid_t)i_tag_read(inode), VS_IDENT | VS_WATCH_P))
3896 +                       return 0;
3897 +
3898 +               /* just pretend we didn't find anything */
3899 +               return -ENOENT;
3900 +       }
3901 +       else if (inode->i_sb->s_magic == PROC_SUPER_MAGIC) {
3902 +               struct proc_dir_entry *de = PDE(inode);
3903 +
3904 +               if (de && !vx_hide_check(0, de->vx_flags)) {
3905 +                       vxdprintk(VXD_CBIT(misc, 9),
3906 +                               VS_Q("%*s") " hidden by _dx_permission",
3907 +                               de->namelen, de->name);
3908 +                       goto out;
3909 +               }
3910 +
3911 +               if ((mask & (MAY_WRITE | MAY_APPEND))) {
3912 +                       struct pid *pid;
3913 +                       struct task_struct *tsk;
3914 +
3915 +                       if (vx_check(0, VS_ADMIN | VS_WATCH_P) ||
3916 +                           vx_flags(VXF_STATE_SETUP, 0))
3917 +                               return 0;
3918 +
3919 +                       pid = PROC_I(inode)->pid;
3920 +                       if (!pid)
3921 +                               goto out;
3922 +
3923 +                       rcu_read_lock();
3924 +                       tsk = pid_task(pid, PIDTYPE_PID);
3925 +                       vxdprintk(VXD_CBIT(tag, 0), "accessing %p[#%u]",
3926 +                                 tsk, (tsk ? vx_task_xid(tsk) : 0));
3927 +                       if (tsk &&
3928 +                               vx_check(vx_task_xid(tsk), VS_IDENT | VS_WATCH_P)) {
3929 +                               rcu_read_unlock();
3930 +                               return 0;
3931 +                       }
3932 +                       rcu_read_unlock();
3933 +               }
3934 +               else {
3935 +                       /* FIXME: Should we block some entries here? */
3936 +                       return 0;
3937 +               }
3938 +       }
3939 +       else {
3940 +               if (dx_notagcheck(inode->i_sb) ||
3941 +                   dx_check((vxid_t)i_tag_read(inode),
3942 +                       DX_HOSTID | DX_ADMIN | DX_WATCH | DX_IDENT))
3943 +                       return 0;
3944 +       }
3945 +
3946 +out:
3947 +       return -EACCES;
3948 +}
3949 +
3950 +int dx_permission(const struct inode *inode, int mask)
3951 +{
3952 +       int ret = __dx_permission(inode, mask);
3953 +       if (unlikely(ret)) {
3954 +#ifndef        CONFIG_VSERVER_WARN_DEVPTS
3955 +               if (inode->i_sb->s_magic != DEVPTS_SUPER_MAGIC)
3956 +#endif
3957 +                   vxwprintk_task(1,
3958 +                       "denied [0x%x] access to inode %s:%p[#%d,%lu]",
3959 +                       mask, inode->i_sb->s_id, inode,
3960 +                       i_tag_read(inode), inode->i_ino);
3961 +       }
3962 +       return ret;
3963 +}
3964 +
3965  /*
3966   * This does the basic permission checking
3967   */
3968 @@ -409,7 +506,7 @@ int __inode_permission(struct inode *ino
3969                 /*
3970                  * Nobody gets write access to an immutable file.
3971                  */
3972 -               if (IS_IMMUTABLE(inode))
3973 +               if (IS_IMMUTABLE(inode) && !IS_COW(inode))
3974                         return -EPERM;
3975
3976                 /*
3977 @@ -421,6 +518,10 @@ int __inode_permission(struct inode *ino
3978                         return -EACCES;
3979         }
3980
3981 +       retval = dx_permission(inode, mask);
3982 +       if (retval)
3983 +               return retval;
3984 +
3985         retval = do_inode_permission(inode, mask);
3986         if (retval)
3987                 return retval;
3988 @@ -2781,7 +2882,7 @@ static int may_delete(struct inode *dir,
3989                 return -EPERM;
3990
3991         if (check_sticky(dir, inode) || IS_APPEND(inode) ||
3992 -           IS_IMMUTABLE(inode) || IS_SWAPFILE(inode) || HAS_UNMAPPED_ID(inode))
3993 +           IS_IXORUNLINK(inode) || IS_SWAPFILE(inode) || HAS_UNMAPPED_ID(inode))
3994                 return -EPERM;
3995         if (isdir) {
3996                 if (!d_is_dir(victim))
3997 @@ -2869,19 +2970,25 @@ int vfs_create(struct inode *dir, struct
3998                 bool want_excl)
3999  {
4000         int error = may_create(dir, dentry);
4001 -       if (error)
4002 +       if (error) {
4003 +               vxdprintk(VXD_CBIT(misc, 3), "may_create failed with %d", error);
4004                 return error;
4005 +       }
4006
4007         if (!dir->i_op->create)
4008                 return -EACCES; /* shouldn't it be ENOSYS? */
4009         mode &= S_IALLUGO;
4010         mode |= S_IFREG;
4011         error = security_inode_create(dir, dentry, mode);
4012 -       if (error)
4013 +       if (error) {
4014 +               vxdprintk(VXD_CBIT(misc, 3), "security_inode_create failed with %d", error);
4015                 return error;
4016 +       }
4017         error = dir->i_op->create(dir, dentry, mode, want_excl);
4018         if (!error)
4019                 fsnotify_create(dir, dentry);
4020 +       else
4021 +               vxdprintk(VXD_CBIT(misc, 3), "i_op->create failed with %d", error);
4022         return error;
4023  }
4024  EXPORT_SYMBOL(vfs_create);
4025 @@ -2919,6 +3026,15 @@ static int may_open(struct path *path, i
4026                 break;
4027         }
4028
4029 +#ifdef CONFIG_VSERVER_COWBL
4030 +       if (IS_COW(inode) &&
4031 +               ((flag & O_ACCMODE) != O_RDONLY)) {
4032 +               if (IS_COW_LINK(inode))
4033 +                       return -EMLINK;
4034 +               inode->i_flags &= ~(S_IXUNLINK|S_IMMUTABLE);
4035 +               mark_inode_dirty(inode);
4036 +       }
4037 +#endif
4038         error = inode_permission(inode, MAY_OPEN | acc_mode);
4039         if (error)
4040                 return error;
4041 @@ -3371,6 +3487,16 @@ finish_open:
4042         }
4043  finish_open_created:
4044         error = may_open(&nd->path, acc_mode, open_flag);
4045 +#ifdef CONFIG_VSERVER_COWBL
4046 +       if (error == -EMLINK) {
4047 +               struct dentry *dentry;
4048 +               dentry = cow_break_link(nd->name->name);
4049 +               if (IS_ERR(dentry))
4050 +                       error = PTR_ERR(dentry);
4051 +               else
4052 +                       dput(dentry);
4053 +       }
4054 +#endif
4055         if (error)
4056                 goto out;
4057         BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
4058 @@ -3474,6 +3600,9 @@ static struct file *path_openat(struct n
4059         int opened = 0;
4060         int error;
4061
4062 +#ifdef CONFIG_VSERVER_COWBL
4063 +restart:
4064 +#endif
4065         file = get_empty_filp();
4066         if (IS_ERR(file))
4067                 return file;
4068 @@ -3507,6 +3636,12 @@ static struct file *path_openat(struct n
4069                 }
4070         }
4071         terminate_walk(nd);
4072 +#ifdef CONFIG_VSERVER_COWBL
4073 +       if (error == -EMLINK) {
4074 +               // path_cleanup(nd);
4075 +               goto restart;
4076 +       }
4077 +#endif
4078  out2:
4079         if (!(opened & FILE_OPENED)) {
4080                 BUG_ON(!error);
4081 @@ -3627,6 +3762,11 @@ static struct dentry *filename_create(in
4082                 goto fail;
4083         }
4084         putname(name);
4085 +       vxdprintk(VXD_CBIT(misc, 3), "filename_create path.dentry = %p (%.*s), dentry = %p (%.*s), d_inode = %p",
4086 +               path->dentry, path->dentry->d_name.len,
4087 +               path->dentry->d_name.name, dentry,
4088 +               dentry->d_name.len, dentry->d_name.name,
4089 +               path->dentry->d_inode);
4090         return dentry;
4091  fail:
4092         dput(dentry);
4093 @@ -3745,6 +3885,7 @@ retry:
4094                         error = vfs_mknod(path.dentry->d_inode,dentry,mode,0);
4095                         break;
4096         }
4097 +
4098  out:
4099         done_path_create(&path, dentry);
4100         if (retry_estale(error, lookup_flags)) {
4101 @@ -4166,7 +4307,7 @@ int vfs_link(struct dentry *old_dentry,
4102         /*
4103          * A link to an append-only or immutable file cannot be created.
4104          */
4105 -       if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
4106 +       if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
4107                 return -EPERM;
4108         /*
4109          * Updating the link count will likely cause i_uid and i_gid to
4110 @@ -4696,6 +4837,326 @@ const char *vfs_get_link(struct dentry *
4111  }
4112  EXPORT_SYMBOL(vfs_get_link);
4113
4114 +
4115 +#ifdef CONFIG_VSERVER_COWBL
4116 +
4117 +static inline
4118 +void dump_path(const char *name, struct path *path)
4119 +{
4120 +       vxdprintk(VXD_CBIT(misc, 3),
4121 +               "%s: path=%p mnt=%p dentry=%p", name, path,
4122 +               path ? path->mnt : NULL,
4123 +               path ? path->dentry : NULL);
4124 +
4125 +       if (path && path->mnt)
4126 +               vxdprintk(VXD_CBIT(misc, 3),
4127 +               "%s: path mnt_sb=%p[#%d,#%d] mnt_root=%p[#%d]", name,
4128 +               path->mnt->mnt_sb,
4129 +               path->mnt->mnt_sb ? path->mnt->mnt_sb->s_count : -1,
4130 +               path->mnt->mnt_sb ? atomic_read(&path->mnt->mnt_sb->s_active) : -1,
4131 +               path->mnt->mnt_root,
4132 +               path->mnt->mnt_root ? path->mnt->mnt_root->d_lockref.count : -1);
4133 +
4134 +       if (path && path->dentry)
4135 +               vxdprintk(VXD_CBIT(misc, 3),
4136 +               "%s: path dentry=%p[#%d]", name,
4137 +               path->dentry,
4138 +               path->dentry ? path->dentry->d_lockref.count : -1);
4139 +}
4140 +
4141 +static inline
4142 +long do_cow_splice(struct file *in, struct file *out, size_t len)
4143 +{
4144 +       loff_t ppos = 0;
4145 +       loff_t opos = 0;
4146 +
4147 +       return do_splice_direct(in, &ppos, out, &opos, len, 0);
4148 +}
4149 +
4150 +struct dentry *cow_break_link(const char *pathname)
4151 +{
4152 +       int ret, mode, pathlen, redo = 0, drop = 1;
4153 +       struct path old_path = {}, par_path = {}, dir_path = {}, *new_path = NULL;
4154 +       struct dentry *dir, *old_dentry, *new_dentry = NULL;
4155 +       struct file *old_file;
4156 +       struct file *new_file;
4157 +       struct qstr new_qstr;
4158 +       int new_type;
4159 +       char *to, *path, pad='\251';
4160 +       loff_t size;
4161 +       struct filename *filename = getname_kernel(pathname);
4162 +       struct filename *to_filename;
4163 +
4164 +       vxdprintk(VXD_CBIT(misc, 1),
4165 +               "cow_break_link(" VS_Q("%s") ")", pathname);
4166 +
4167 +       path = kmalloc(PATH_MAX, GFP_KERNEL);
4168 +       ret = -ENOMEM;
4169 +       if (!path || IS_ERR(filename))
4170 +               goto out;
4171 +
4172 +       /* old_path will have refs to dentry and mnt */
4173 +       ret = filename_lookup(AT_FDCWD, filename, LOOKUP_FOLLOW, &old_path, NULL);
4174 +       vxdprintk(VXD_CBIT(misc, 2),
4175 +               "do_path_lookup(old): %d", ret);
4176 +       if (ret < 0)
4177 +               goto out_free_path;
4178 +
4179 +       dump_path("cow (old)", &old_path);
4180 +
4181 +       /* no explicit reference for old_dentry here */
4182 +       old_dentry = old_path.dentry;
4183 +
4184 +       mode = old_dentry->d_inode->i_mode;
4185 +       to = d_path(&old_path, path, PATH_MAX-2);
4186 +       pathlen = strlen(to);
4187 +       vxdprintk(VXD_CBIT(misc, 2),
4188 +               "old path " VS_Q("%s") " [%p:" VS_Q("%.*s") ":%d]", to,
4189 +               old_dentry,
4190 +               old_dentry->d_name.len, old_dentry->d_name.name,
4191 +               old_dentry->d_name.len);
4192 +
4193 +       to[pathlen + 1] = 0;
4194 +retry:
4195 +       new_dentry = NULL;
4196 +       to[pathlen] = pad--;
4197 +       ret = -ELOOP;
4198 +       if (pad <= '\240')
4199 +               goto out_rel_old;
4200 +
4201 +       vxdprintk(VXD_CBIT(misc, 1), "temp copy " VS_Q("%s"), to);
4202 +
4203 +       /* dir_path will have refs to dentry and mnt */
4204 +       to_filename = getname_kernel(to);
4205 +       to_filename = filename_parentat(AT_FDCWD, to_filename,
4206 +               LOOKUP_PARENT | LOOKUP_OPEN | LOOKUP_CREATE, &par_path, &new_qstr, &new_type);
4207 +       vxdprintk(VXD_CBIT(misc, 2), "filename_parentat(new): %p", to_filename);
4208 +       dump_path("cow (par)", &par_path);
4209 +       if (IS_ERR(to_filename))
4210 +               goto retry;
4211 +
4212 +       vxdprintk(VXD_CBIT(misc, 2), "to_filename refcnt=%d", to_filename->refcnt);
4213 +
4214 +       /* this puppy downs the dir inode mutex if successful.
4215 +          dir_path will hold refs to dentry and mnt and
4216 +          we'll have write access to the mnt */
4217 +       new_dentry = filename_create(AT_FDCWD, to_filename, &dir_path, 0);
4218 +       if (!new_dentry || IS_ERR(new_dentry)) {
4219 +               path_put(&par_path);
4220 +               vxdprintk(VXD_CBIT(misc, 2),
4221 +                       "filename_create(new) failed with %ld",
4222 +                       PTR_ERR(new_dentry));
4223 +               goto retry;
4224 +       }
4225 +       vxdprintk(VXD_CBIT(misc, 2),
4226 +               "filename_create(new): %p [" VS_Q("%.*s") ":%d]",
4227 +               new_dentry,
4228 +               new_dentry->d_name.len, new_dentry->d_name.name,
4229 +               new_dentry->d_name.len);
4230 +
4231 +       dump_path("cow (dir)", &dir_path);
4232 +
4233 +       /* take a reference on new_dentry */
4234 +       dget(new_dentry);
4235 +
4236 +       /* dentry/mnt refs handed over to new_path */
4237 +       new_path = &dir_path;
4238 +
4239 +       /* dentry for old/new dir */
4240 +       dir = par_path.dentry;
4241 +
4242 +       /* give up reference on dir */
4243 +       dput(new_path->dentry);
4244 +
4245 +       /* new_dentry already has a reference */
4246 +       new_path->dentry = new_dentry;
4247 +
4248 +       ret = vfs_create(dir->d_inode, new_dentry, mode, 1);
4249 +       vxdprintk(VXD_CBIT(misc, 2),
4250 +               "vfs_create(new): %d", ret);
4251 +       if (ret == -EEXIST) {
4252 +               path_put(&par_path);
4253 +               inode_unlock(dir->d_inode);
4254 +               mnt_drop_write(new_path->mnt);
4255 +               path_put(new_path);
4256 +               new_dentry = NULL;
4257 +               goto retry;
4258 +       }
4259 +       else if (ret < 0)
4260 +               goto out_unlock_new;
4261 +
4262 +       /* the old file went away */
4263 +       ret = -ENOENT;
4264 +       if ((redo = d_unhashed(old_dentry)))
4265 +               goto out_unlock_new;
4266 +
4267 +       /* doesn't change refs for old_path */
4268 +       old_file = dentry_open(&old_path, O_RDONLY, current_cred());
4269 +       vxdprintk(VXD_CBIT(misc, 2),
4270 +               "dentry_open(old): %p", old_file);
4271 +       if (IS_ERR(old_file)) {
4272 +               ret = PTR_ERR(old_file);
4273 +               goto out_unlock_new;
4274 +       }
4275 +
4276 +       /* doesn't change refs for new_path */
4277 +       new_file = dentry_open(new_path, O_WRONLY, current_cred());
4278 +       vxdprintk(VXD_CBIT(misc, 2),
4279 +               "dentry_open(new): %p", new_file);
4280 +       if (IS_ERR(new_file)) {
4281 +               ret = PTR_ERR(new_file);
4282 +               goto out_fput_old;
4283 +       }
4284 +
4285 +       /* unlock the inode from filename_create() */
4286 +       inode_unlock(dir->d_inode);
4287 +
4288 +       /* drop write access to mnt */
4289 +       mnt_drop_write(new_path->mnt);
4290 +
4291 +       drop = 0;
4292 +
4293 +       size = i_size_read(old_file->f_path.dentry->d_inode);
4294 +       ret = do_cow_splice(old_file, new_file, size);
4295 +       vxdprintk(VXD_CBIT(misc, 2), "do_splice_direct: %d", ret);
4296 +       if (ret < 0) {
4297 +               goto out_fput_both;
4298 +       } else if (ret < size) {
4299 +               ret = -ENOSPC;
4300 +               goto out_fput_both;
4301 +       } else {
4302 +               struct inode *old_inode = old_dentry->d_inode;
4303 +               struct inode *new_inode = new_dentry->d_inode;
4304 +               struct iattr attr = {
4305 +                       .ia_uid = old_inode->i_uid,
4306 +                       .ia_gid = old_inode->i_gid,
4307 +                       .ia_valid = ATTR_UID | ATTR_GID
4308 +                       };
4309 +
4310 +               setattr_copy(new_inode, &attr);
4311 +               mark_inode_dirty(new_inode);
4312 +       }
4313 +
4314 +       /* lock rename mutex */
4315 +       mutex_lock(&old_dentry->d_inode->i_sb->s_vfs_rename_mutex);
4316 +
4317 +       /* drop out late */
4318 +       ret = -ENOENT;
4319 +       if ((redo = d_unhashed(old_dentry)))
4320 +               goto out_unlock;
4321 +
4322 +       vxdprintk(VXD_CBIT(misc, 2),
4323 +               "vfs_rename: [" VS_Q("%*s") ":%d] -> [" VS_Q("%*s") ":%d]",
4324 +               new_dentry->d_name.len, new_dentry->d_name.name,
4325 +               new_dentry->d_name.len,
4326 +               old_dentry->d_name.len, old_dentry->d_name.name,
4327 +               old_dentry->d_name.len);
4328 +       ret = vfs_rename(par_path.dentry->d_inode, new_dentry,
4329 +               old_dentry->d_parent->d_inode, old_dentry, NULL, 0);
4330 +       vxdprintk(VXD_CBIT(misc, 2), "vfs_rename: %d", ret);
4331 +
4332 +out_unlock:
4333 +       mutex_unlock(&old_dentry->d_inode->i_sb->s_vfs_rename_mutex);
4334 +
4335 +out_fput_both:
4336 +       vxdprintk(VXD_CBIT(misc, 3),
4337 +               "fput(new_file=%p[#%ld])", new_file,
4338 +               atomic_long_read(&new_file->f_count));
4339 +       fput(new_file);
4340 +
4341 +out_fput_old:
4342 +       vxdprintk(VXD_CBIT(misc, 3),
4343 +               "fput(old_file=%p[#%ld])", old_file,
4344 +               atomic_long_read(&old_file->f_count));
4345 +       fput(old_file);
4346 +
4347 +out_unlock_new:
4348 +       /* drop references from par_path */
4349 +       path_put(&par_path);
4350 +
4351 +       if (drop) {
4352 +               /* unlock the inode from filename_create() */
4353 +               inode_unlock(dir->d_inode);
4354 +
4355 +               /* drop write access to mnt */
4356 +               mnt_drop_write(new_path->mnt);
4357 +       }
4358 +
4359 +       if (!ret)
4360 +               goto out_redo;
4361 +
4362 +       /* error path cleanup */
4363 +       vfs_unlink(dir->d_inode, new_dentry, NULL);
4364 +
4365 +out_redo:
4366 +       if (!redo)
4367 +               goto out_rel_both;
4368 +
4369 +       /* lookup dentry once again
4370 +          old_path will be freed as old_path in out_rel_old */
4371 +       ret = filename_lookup(AT_FDCWD, filename, LOOKUP_FOLLOW, &old_path, NULL);
4372 +       if (ret)
4373 +               goto out_rel_both;
4374 +
4375 +       /* drop reference on new_dentry */
4376 +       dput(new_dentry);
4377 +       new_dentry = old_path.dentry;
4378 +       dget(new_dentry);
4379 +       vxdprintk(VXD_CBIT(misc, 2),
4380 +               "do_path_lookup(redo): %p [" VS_Q("%.*s") ":%d]",
4381 +               new_dentry,
4382 +               new_dentry->d_name.len, new_dentry->d_name.name,
4383 +               new_dentry->d_name.len);
4384 +
4385 +out_rel_both:
4386 +       dump_path("put (new)", new_path);
4387 +       if (new_path)
4388 +               path_put(new_path);
4389 +out_rel_old:
4390 +       dump_path("put (old)", &old_path);
4391 +       path_put(&old_path);
4392 +out_free_path:
4393 +       kfree(path);
4394 +out:
4395 +       if (ret) {
4396 +               dput(new_dentry);
4397 +               new_dentry = ERR_PTR(ret);
4398 +       }
4399 +       // if (!IS_ERR(filename))
4400 +       //        putname(filename);
4401 +       vxdprintk(VXD_CBIT(misc, 3),
4402 +               "cow_break_link returning with %p", new_dentry);
4403 +       return new_dentry;
4404 +}
4405 +
4406 +#endif
4407 +
4408 +int    vx_info_mnt_namespace(struct mnt_namespace *ns, char *buffer)
4409 +{
4410 +       struct path path;
4411 +       struct vfsmount *vmnt;
4412 +       char *pstr, *root;
4413 +       int length = 0;
4414 +
4415 +       pstr = kmalloc(PATH_MAX, GFP_KERNEL);
4416 +       if (!pstr)
4417 +               return 0;
4418 +
4419 +       vmnt = &ns->root->mnt;
4420 +       path.mnt = vmnt;
4421 +       path.dentry = vmnt->mnt_root;
4422 +       root = d_path(&path, pstr, PATH_MAX - 2);
4423 +       length = sprintf(buffer + length,
4424 +               "Namespace:\t%p [#%u]\n"
4425 +               "RootPath:\t%s\n",
4426 +               ns, atomic_read(&ns->count),
4427 +               root);
4428 +       kfree(pstr);
4429 +       return length;
4430 +}
4431 +
4432 +EXPORT_SYMBOL(vx_info_mnt_namespace);
4433 +
4434  /* get the link contents into pagecache */
4435  const char *page_get_link(struct dentry *dentry, struct inode *inode,
4436                           struct delayed_call *callback)
4437 diff -NurpP --minimal linux-4.9.76/fs/namespace.c linux-4.9.76-vs2.3.9.5/fs/namespace.c
4438 --- linux-4.9.76/fs/namespace.c 2018-01-13 21:28:57.000000000 +0000
4439 +++ linux-4.9.76-vs2.3.9.5/fs/namespace.c       2018-01-13 01:17:24.000000000 +0000
4440 @@ -24,6 +24,11 @@
4441  #include <linux/magic.h>
4442  #include <linux/bootmem.h>
4443  #include <linux/task_work.h>
4444 +#include <linux/vs_base.h>
4445 +#include <linux/vs_context.h>
4446 +#include <linux/vs_tag.h>
4447 +#include <linux/vserver/space.h>
4448 +#include <linux/vserver/global.h>
4449  #include "pnode.h"
4450  #include "internal.h"
4451
4452 @@ -971,6 +976,10 @@ vfs_kern_mount(struct file_system_type *
4453         if (!type)
4454                 return ERR_PTR(-ENODEV);
4455
4456 +       if ((type->fs_flags & FS_BINARY_MOUNTDATA) &&
4457 +               !vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT))
4458 +               return ERR_PTR(-EPERM);
4459 +
4460         mnt = alloc_vfsmnt(name);
4461         if (!mnt)
4462                 return ERR_PTR(-ENOMEM);
4463 @@ -1061,6 +1070,7 @@ static struct mount *clone_mnt(struct mo
4464         mnt->mnt.mnt_root = dget(root);
4465         mnt->mnt_mountpoint = mnt->mnt.mnt_root;
4466         mnt->mnt_parent = mnt;
4467 +       mnt->mnt_tag = old->mnt_tag;
4468         lock_mount_hash();
4469         list_add_tail(&mnt->mnt_instance, &sb->s_mounts);
4470         unlock_mount_hash();
4471 @@ -1635,7 +1645,8 @@ out_unlock:
4472   */
4473  static inline bool may_mount(void)
4474  {
4475 -       return ns_capable(current->nsproxy->mnt_ns->user_ns, CAP_SYS_ADMIN);
4476 +       return vx_ns_capable(current->nsproxy->mnt_ns->user_ns,
4477 +               CAP_SYS_ADMIN, VXC_SECURE_MOUNT);
4478  }
4479
4480  static inline bool may_mandlock(void)
4481 @@ -2144,6 +2155,7 @@ static int do_change_type(struct path *p
4482                 if (err)
4483                         goto out_unlock;
4484         }
4485 +       // mnt->mnt_flags = mnt_flags;
4486
4487         lock_mount_hash();
4488         for (m = mnt; m; m = (recurse ? next_mnt(m, mnt) : NULL))
4489 @@ -2172,12 +2184,14 @@ static bool has_locked_children(struct m
4490   * do loopback mount.
4491   */
4492  static int do_loopback(struct path *path, const char *old_name,
4493 -                               int recurse)
4494 +       vtag_t tag, unsigned long flags, int mnt_flags)
4495  {
4496         struct path old_path;
4497         struct mount *mnt = NULL, *old, *parent;
4498         struct mountpoint *mp;
4499 +       int recurse = flags & MS_REC;
4500         int err;
4501 +
4502         if (!old_name || !*old_name)
4503                 return -EINVAL;
4504         err = kern_path(old_name, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &old_path);
4505 @@ -2257,7 +2271,7 @@ static int change_mount_flags(struct vfs
4506   * on it - tough luck.
4507   */
4508  static int do_remount(struct path *path, int flags, int mnt_flags,
4509 -                     void *data)
4510 +       void *data, vxid_t xid)
4511  {
4512         int err;
4513         struct super_block *sb = path->mnt->mnt_sb;
4514 @@ -2742,6 +2756,7 @@ long do_mount(const char *dev_name, cons
4515         struct path path;
4516         int retval = 0;
4517         int mnt_flags = 0;
4518 +       vtag_t tag = 0;
4519
4520         /* Discard magic */
4521         if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
4522 @@ -2769,6 +2784,12 @@ long do_mount(const char *dev_name, cons
4523         if (!(flags & MS_NOATIME))
4524                 mnt_flags |= MNT_RELATIME;
4525
4526 +       if (dx_parse_tag(data_page, &tag, 1, &mnt_flags, &flags)) {
4527 +               /* FIXME: bind and re-mounts get the tag flag? */
4528 +               if (flags & (MS_BIND|MS_REMOUNT))
4529 +                       flags |= MS_TAGID;
4530 +       }
4531 +
4532         /* Separate the per-mountpoint flags */
4533         if (flags & MS_NOSUID)
4534                 mnt_flags |= MNT_NOSUID;
4535 @@ -2793,15 +2814,18 @@ long do_mount(const char *dev_name, cons
4536                 mnt_flags |= path.mnt->mnt_flags & MNT_ATIME_MASK;
4537         }
4538
4539 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_DEV_MOUNT))
4540 +               mnt_flags |= MNT_NODEV;
4541 +
4542         flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN |
4543                    MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
4544                    MS_STRICTATIME | MS_NOREMOTELOCK | MS_SUBMOUNT);
4545
4546         if (flags & MS_REMOUNT)
4547                 retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags,
4548 -                                   data_page);
4549 +                                   data_page, tag);
4550         else if (flags & MS_BIND)
4551 -               retval = do_loopback(&path, dev_name, flags & MS_REC);
4552 +               retval = do_loopback(&path, dev_name, tag, flags, mnt_flags);
4553         else if (flags & (MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
4554                 retval = do_change_type(&path, flags);
4555         else if (flags & MS_MOVE)
4556 @@ -2942,6 +2966,7 @@ struct mnt_namespace *copy_mnt_ns(unsign
4557                         p = next_mnt(p, old);
4558         }
4559         namespace_unlock();
4560 +       atomic_inc(&vs_global_mnt_ns);
4561
4562         if (rootmnt)
4563                 mntput(rootmnt);
4564 @@ -3117,9 +3142,10 @@ SYSCALL_DEFINE2(pivot_root, const char _
4565         new_mnt = real_mount(new.mnt);
4566         root_mnt = real_mount(root.mnt);
4567         old_mnt = real_mount(old.mnt);
4568 -       if (IS_MNT_SHARED(old_mnt) ||
4569 +       if ((IS_MNT_SHARED(old_mnt) ||
4570                 IS_MNT_SHARED(new_mnt->mnt_parent) ||
4571 -               IS_MNT_SHARED(root_mnt->mnt_parent))
4572 +               IS_MNT_SHARED(root_mnt->mnt_parent)) &&
4573 +               !vx_flags(VXF_STATE_SETUP, 0))
4574                 goto out4;
4575         if (!check_mnt(root_mnt) || !check_mnt(new_mnt))
4576                 goto out4;
4577 @@ -3257,6 +3283,7 @@ void put_mnt_ns(struct mnt_namespace *ns
4578         if (!atomic_dec_and_test(&ns->count))
4579                 return;
4580         drop_collected_mounts(&ns->root->mnt);
4581 +       atomic_dec(&vs_global_mnt_ns);
4582         free_mnt_ns(ns);
4583  }
4584
4585 diff -NurpP --minimal linux-4.9.76/fs/nfs/client.c linux-4.9.76-vs2.3.9.5/fs/nfs/client.c
4586 --- linux-4.9.76/fs/nfs/client.c        2016-12-11 19:17:54.000000000 +0000
4587 +++ linux-4.9.76-vs2.3.9.5/fs/nfs/client.c      2018-01-10 02:50:49.000000000 +0000
4588 @@ -586,6 +586,9 @@ int nfs_init_server_rpcclient(struct nfs
4589         if (server->flags & NFS_MOUNT_SOFT)
4590                 server->client->cl_softrtry = 1;
4591
4592 +       server->client->cl_tag = 0;
4593 +       if (server->flags & NFS_MOUNT_TAGGED)
4594 +               server->client->cl_tag = 1;
4595         return 0;
4596  }
4597  EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient);
4598 @@ -762,6 +765,10 @@ static void nfs_server_set_fsinfo(struct
4599                 server->acdirmin = server->acdirmax = 0;
4600         }
4601
4602 +       /* FIXME: needs fsinfo
4603 +       if (server->flags & NFS_MOUNT_TAGGED)
4604 +               sb->s_flags |= MS_TAGGED;       */
4605 +
4606         server->maxfilesize = fsinfo->maxfilesize;
4607
4608         server->time_delta = fsinfo->time_delta;
4609 diff -NurpP --minimal linux-4.9.76/fs/nfs/dir.c linux-4.9.76-vs2.3.9.5/fs/nfs/dir.c
4610 --- linux-4.9.76/fs/nfs/dir.c   2018-01-13 21:28:57.000000000 +0000
4611 +++ linux-4.9.76-vs2.3.9.5/fs/nfs/dir.c 2018-01-10 02:50:49.000000000 +0000
4612 @@ -37,6 +37,7 @@
4613  #include <linux/sched.h>
4614  #include <linux/kmemleak.h>
4615  #include <linux/xattr.h>
4616 +#include <linux/vs_tag.h>
4617
4618  #include "delegation.h"
4619  #include "iostat.h"
4620 @@ -1420,6 +1421,7 @@ struct dentry *nfs_lookup(struct inode *
4621         /* Success: notify readdir to use READDIRPLUS */
4622         nfs_advise_use_readdirplus(dir);
4623
4624 +       dx_propagate_tag(nd, inode);
4625  no_entry:
4626         res = d_splice_alias(inode, dentry);
4627         if (res != NULL) {
4628 diff -NurpP --minimal linux-4.9.76/fs/nfs/inode.c linux-4.9.76-vs2.3.9.5/fs/nfs/inode.c
4629 --- linux-4.9.76/fs/nfs/inode.c 2018-01-13 21:28:57.000000000 +0000
4630 +++ linux-4.9.76-vs2.3.9.5/fs/nfs/inode.c       2018-01-10 02:50:49.000000000 +0000
4631 @@ -38,6 +38,7 @@
4632  #include <linux/slab.h>
4633  #include <linux/compat.h>
4634  #include <linux/freezer.h>
4635 +#include <linux/vs_tag.h>
4636
4637  #include <asm/uaccess.h>
4638
4639 @@ -383,6 +384,8 @@ nfs_fhget(struct super_block *sb, struct
4640         if (inode->i_state & I_NEW) {
4641                 struct nfs_inode *nfsi = NFS_I(inode);
4642                 unsigned long now = jiffies;
4643 +               kuid_t kuid;
4644 +               kgid_t kgid;
4645
4646                 /* We set i_ino for the few things that still rely on it,
4647                  * such as stat(2) */
4648 @@ -427,8 +430,8 @@ nfs_fhget(struct super_block *sb, struct
4649                 inode->i_version = 0;
4650                 inode->i_size = 0;
4651                 clear_nlink(inode);
4652 -               inode->i_uid = make_kuid(&init_user_ns, -2);
4653 -               inode->i_gid = make_kgid(&init_user_ns, -2);
4654 +               kuid = make_kuid(&init_user_ns, -2);
4655 +               kgid = make_kgid(&init_user_ns, -2);
4656                 inode->i_blocks = 0;
4657                 memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
4658                 nfsi->write_io = 0;
4659 @@ -463,11 +466,11 @@ nfs_fhget(struct super_block *sb, struct
4660                 else if (nfs_server_capable(inode, NFS_CAP_NLINK))
4661                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4662                 if (fattr->valid & NFS_ATTR_FATTR_OWNER)
4663 -                       inode->i_uid = fattr->uid;
4664 +                       kuid = fattr->uid;
4665                 else if (nfs_server_capable(inode, NFS_CAP_OWNER))
4666                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4667                 if (fattr->valid & NFS_ATTR_FATTR_GROUP)
4668 -                       inode->i_gid = fattr->gid;
4669 +                       kgid = fattr->gid;
4670                 else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP))
4671                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4672                 if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
4673 @@ -478,6 +481,10 @@ nfs_fhget(struct super_block *sb, struct
4674                          */
4675                         inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
4676                 }
4677 +               inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
4678 +               inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
4679 +               inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, GLOBAL_ROOT_TAG);
4680 +                               /* maybe fattr->xid someday */
4681
4682                 nfs_setsecurity(inode, fattr, label);
4683
4684 @@ -619,6 +626,8 @@ void nfs_setattr_update_inode(struct ino
4685                         inode->i_uid = attr->ia_uid;
4686                 if ((attr->ia_valid & ATTR_GID) != 0)
4687                         inode->i_gid = attr->ia_gid;
4688 +               if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
4689 +                       inode->i_tag = attr->ia_tag;
4690                 nfs_set_cache_invalid(inode, NFS_INO_INVALID_ACCESS
4691                                 | NFS_INO_INVALID_ACL);
4692         }
4693 @@ -1272,7 +1281,9 @@ static int nfs_check_inode_attributes(st
4694         struct nfs_inode *nfsi = NFS_I(inode);
4695         loff_t cur_size, new_isize;
4696         unsigned long invalid = 0;
4697 -
4698 +       kuid_t kuid;
4699 +       kgid_t kgid;
4700 +       ktag_t ktag;
4701
4702         if (nfs_have_delegated_attributes(inode))
4703                 return 0;
4704 @@ -1301,13 +1312,18 @@ static int nfs_check_inode_attributes(st
4705                 }
4706         }
4707
4708 +       kuid = INOTAG_KUID(DX_TAG(inode), fattr->uid, fattr->gid);
4709 +       kgid = INOTAG_KGID(DX_TAG(inode), fattr->uid, fattr->gid);
4710 +       ktag = INOTAG_KTAG(DX_TAG(inode), fattr->uid, fattr->gid, GLOBAL_ROOT_TAG);
4711 +
4712         /* Have any file permissions changed? */
4713         if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
4714                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4715 -       if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid))
4716 +       if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, kuid))
4717                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4718 -       if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid))
4719 +       if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, kgid))
4720                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4721 +               /* maybe check for tag too? */
4722
4723         /* Has the link count changed? */
4724         if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink)
4725 @@ -1666,6 +1682,9 @@ static int nfs_update_inode(struct inode
4726         unsigned long save_cache_validity;
4727         bool have_writers = nfs_file_has_buffered_writers(nfsi);
4728         bool cache_revalidated = true;
4729 +       kuid_t kuid;
4730 +       kgid_t kgid;
4731 +       ktag_t ktag;
4732
4733         dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n",
4734                         __func__, inode->i_sb->s_id, inode->i_ino,
4735 @@ -1785,6 +1804,9 @@ static int nfs_update_inode(struct inode
4736                 cache_revalidated = false;
4737         }
4738
4739 +       kuid = TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag);
4740 +       kgid = TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag);
4741 +       ktag = TAGINO_KTAG(DX_TAG(inode), inode->i_tag);
4742
4743         if (fattr->valid & NFS_ATTR_FATTR_ATIME)
4744                 memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
4745 @@ -1839,6 +1861,10 @@ static int nfs_update_inode(struct inode
4746                 cache_revalidated = false;
4747         }
4748
4749 +       inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
4750 +       inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
4751 +       inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, ktag);
4752 +
4753         if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
4754                 if (inode->i_nlink != fattr->nlink) {
4755                         invalid |= NFS_INO_INVALID_ATTR;
4756 diff -NurpP --minimal linux-4.9.76/fs/nfs/nfs3xdr.c linux-4.9.76-vs2.3.9.5/fs/nfs/nfs3xdr.c
4757 --- linux-4.9.76/fs/nfs/nfs3xdr.c       2016-12-11 19:17:54.000000000 +0000
4758 +++ linux-4.9.76-vs2.3.9.5/fs/nfs/nfs3xdr.c     2018-01-10 02:50:49.000000000 +0000
4759 @@ -20,6 +20,7 @@
4760  #include <linux/nfs3.h>
4761  #include <linux/nfs_fs.h>
4762  #include <linux/nfsacl.h>
4763 +#include <linux/vs_tag.h>
4764  #include "internal.h"
4765
4766  #define NFSDBG_FACILITY                NFSDBG_XDR
4767 @@ -558,7 +559,8 @@ static __be32 *xdr_decode_nfstime3(__be3
4768   *             set_mtime       mtime;
4769   *     };
4770   */
4771 -static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
4772 +static void encode_sattr3(struct xdr_stream *xdr,
4773 +       const struct iattr *attr, int tag)
4774  {
4775         u32 nbytes;
4776         __be32 *p;
4777 @@ -590,15 +592,19 @@ static void encode_sattr3(struct xdr_str
4778         } else
4779                 *p++ = xdr_zero;
4780
4781 -       if (attr->ia_valid & ATTR_UID) {
4782 +       if (attr->ia_valid & ATTR_UID ||
4783 +               (tag && (attr->ia_valid & ATTR_TAG))) {
4784                 *p++ = xdr_one;
4785 -               *p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid));
4786 +               *p++ = cpu_to_be32(from_kuid(&init_user_ns,
4787 +                       TAGINO_KUID(tag, attr->ia_uid, attr->ia_tag)));
4788         } else
4789                 *p++ = xdr_zero;
4790
4791 -       if (attr->ia_valid & ATTR_GID) {
4792 +       if (attr->ia_valid & ATTR_GID ||
4793 +               (tag && (attr->ia_valid & ATTR_TAG))) {
4794                 *p++ = xdr_one;
4795 -               *p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid));
4796 +               *p++ = cpu_to_be32(from_kgid(&init_user_ns,
4797 +                       TAGINO_KGID(tag, attr->ia_gid, attr->ia_tag)));
4798         } else
4799                 *p++ = xdr_zero;
4800
4801 @@ -887,7 +893,7 @@ static void nfs3_xdr_enc_setattr3args(st
4802                                       const struct nfs3_sattrargs *args)
4803  {
4804         encode_nfs_fh3(xdr, args->fh);
4805 -       encode_sattr3(xdr, args->sattr);
4806 +       encode_sattr3(xdr, args->sattr, req->rq_task->tk_client->cl_tag);
4807         encode_sattrguard3(xdr, args);
4808  }
4809
4810 @@ -1037,13 +1043,13 @@ static void nfs3_xdr_enc_write3args(stru
4811   *     };
4812   */
4813  static void encode_createhow3(struct xdr_stream *xdr,
4814 -                             const struct nfs3_createargs *args)
4815 +       const struct nfs3_createargs *args, int tag)
4816  {
4817         encode_uint32(xdr, args->createmode);
4818         switch (args->createmode) {
4819         case NFS3_CREATE_UNCHECKED:
4820         case NFS3_CREATE_GUARDED:
4821 -               encode_sattr3(xdr, args->sattr);
4822 +               encode_sattr3(xdr, args->sattr, tag);
4823                 break;
4824         case NFS3_CREATE_EXCLUSIVE:
4825                 encode_createverf3(xdr, args->verifier);
4826 @@ -1058,7 +1064,7 @@ static void nfs3_xdr_enc_create3args(str
4827                                      const struct nfs3_createargs *args)
4828  {
4829         encode_diropargs3(xdr, args->fh, args->name, args->len);
4830 -       encode_createhow3(xdr, args);
4831 +       encode_createhow3(xdr, args, req->rq_task->tk_client->cl_tag);
4832  }
4833
4834  /*
4835 @@ -1074,7 +1080,7 @@ static void nfs3_xdr_enc_mkdir3args(stru
4836                                     const struct nfs3_mkdirargs *args)
4837  {
4838         encode_diropargs3(xdr, args->fh, args->name, args->len);
4839 -       encode_sattr3(xdr, args->sattr);
4840 +       encode_sattr3(xdr, args->sattr, req->rq_task->tk_client->cl_tag);
4841  }
4842
4843  /*
4844 @@ -1091,9 +1097,9 @@ static void nfs3_xdr_enc_mkdir3args(stru
4845   *     };
4846   */
4847  static void encode_symlinkdata3(struct xdr_stream *xdr,
4848 -                               const struct nfs3_symlinkargs *args)
4849 +       const struct nfs3_symlinkargs *args, int tag)
4850  {
4851 -       encode_sattr3(xdr, args->sattr);
4852 +       encode_sattr3(xdr, args->sattr, tag);
4853         encode_nfspath3(xdr, args->pages, args->pathlen);
4854  }
4855
4856 @@ -1102,7 +1108,7 @@ static void nfs3_xdr_enc_symlink3args(st
4857                                       const struct nfs3_symlinkargs *args)
4858  {
4859         encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
4860 -       encode_symlinkdata3(xdr, args);
4861 +       encode_symlinkdata3(xdr, args, req->rq_task->tk_client->cl_tag);
4862         xdr->buf->flags |= XDRBUF_WRITE;
4863  }
4864
4865 @@ -1131,24 +1137,24 @@ static void nfs3_xdr_enc_symlink3args(st
4866   *     };
4867   */
4868  static void encode_devicedata3(struct xdr_stream *xdr,
4869 -                              const struct nfs3_mknodargs *args)
4870 +       const struct nfs3_mknodargs *args, int tag)
4871  {
4872 -       encode_sattr3(xdr, args->sattr);
4873 +       encode_sattr3(xdr, args->sattr, tag);
4874         encode_specdata3(xdr, args->rdev);
4875  }
4876
4877  static void encode_mknoddata3(struct xdr_stream *xdr,
4878 -                             const struct nfs3_mknodargs *args)
4879 +       const struct nfs3_mknodargs *args, int tag)
4880  {
4881         encode_ftype3(xdr, args->type);
4882         switch (args->type) {
4883         case NF3CHR:
4884         case NF3BLK:
4885 -               encode_devicedata3(xdr, args);
4886 +               encode_devicedata3(xdr, args, tag);
4887                 break;
4888         case NF3SOCK:
4889         case NF3FIFO:
4890 -               encode_sattr3(xdr, args->sattr);
4891 +               encode_sattr3(xdr, args->sattr, tag);
4892                 break;
4893         case NF3REG:
4894         case NF3DIR:
4895 @@ -1163,7 +1169,7 @@ static void nfs3_xdr_enc_mknod3args(stru
4896                                     const struct nfs3_mknodargs *args)
4897  {
4898         encode_diropargs3(xdr, args->fh, args->name, args->len);
4899 -       encode_mknoddata3(xdr, args);
4900 +       encode_mknoddata3(xdr, args, req->rq_task->tk_client->cl_tag);
4901  }
4902
4903  /*
4904 diff -NurpP --minimal linux-4.9.76/fs/nfs/super.c linux-4.9.76-vs2.3.9.5/fs/nfs/super.c
4905 --- linux-4.9.76/fs/nfs/super.c 2018-01-13 21:28:57.000000000 +0000
4906 +++ linux-4.9.76-vs2.3.9.5/fs/nfs/super.c       2018-01-10 02:50:49.000000000 +0000
4907 @@ -54,6 +54,7 @@
4908  #include <linux/parser.h>
4909  #include <linux/nsproxy.h>
4910  #include <linux/rcupdate.h>
4911 +#include <linux/vs_tag.h>
4912
4913  #include <asm/uaccess.h>
4914
4915 @@ -102,6 +103,7 @@ enum {
4916         Opt_mountport,
4917         Opt_mountvers,
4918         Opt_minorversion,
4919 +       Opt_tagid,
4920
4921         /* Mount options that take string arguments */
4922         Opt_nfsvers,
4923 @@ -114,6 +116,9 @@ enum {
4924         /* Special mount options */
4925         Opt_userspace, Opt_deprecated, Opt_sloppy,
4926
4927 +       /* Linux-VServer tagging options */
4928 +       Opt_tag, Opt_notag,
4929 +
4930         Opt_err
4931  };
4932
4933 @@ -183,6 +188,10 @@ static const match_table_t nfs_mount_opt
4934         { Opt_fscache_uniq, "fsc=%s" },
4935         { Opt_local_lock, "local_lock=%s" },
4936
4937 +       { Opt_tag, "tag" },
4938 +       { Opt_notag, "notag" },
4939 +       { Opt_tagid, "tagid=%u" },
4940 +
4941         /* The following needs to be listed after all other options */
4942         { Opt_nfsvers, "v%s" },
4943
4944 @@ -644,6 +653,7 @@ static void nfs_show_mount_options(struc
4945                 { NFS_MOUNT_NORDIRPLUS, ",nordirplus", "" },
4946                 { NFS_MOUNT_UNSHARED, ",nosharecache", "" },
4947                 { NFS_MOUNT_NORESVPORT, ",noresvport", "" },
4948 +               { NFS_MOUNT_TAGGED, ",tag", "" },
4949                 { 0, NULL, NULL }
4950         };
4951         const struct proc_nfs_info *nfs_infop;
4952 @@ -1341,6 +1351,14 @@ static int nfs_parse_mount_options(char
4953                 case Opt_nomigration:
4954                         mnt->options &= ~NFS_OPTION_MIGRATION;
4955                         break;
4956 +#ifndef CONFIG_TAGGING_NONE
4957 +               case Opt_tag:
4958 +                       mnt->flags |= NFS_MOUNT_TAGGED;
4959 +                       break;
4960 +               case Opt_notag:
4961 +                       mnt->flags &= ~NFS_MOUNT_TAGGED;
4962 +                       break;
4963 +#endif
4964
4965                 /*
4966                  * options that take numeric values
4967 @@ -1427,6 +1445,12 @@ static int nfs_parse_mount_options(char
4968                                 goto out_invalid_value;
4969                         mnt->minorversion = option;
4970                         break;
4971 +#ifdef CONFIG_PROPAGATE
4972 +               case Opt_tagid:
4973 +                       /* use args[0] */
4974 +                       nfs_data.flags |= NFS_MOUNT_TAGGED;
4975 +                       break;
4976 +#endif
4977
4978                 /*
4979                  * options that take text values
4980 diff -NurpP --minimal linux-4.9.76/fs/nfsd/auth.c linux-4.9.76-vs2.3.9.5/fs/nfsd/auth.c
4981 --- linux-4.9.76/fs/nfsd/auth.c 2018-01-13 21:28:57.000000000 +0000
4982 +++ linux-4.9.76-vs2.3.9.5/fs/nfsd/auth.c       2018-01-13 21:30:31.000000000 +0000
4983 @@ -1,6 +1,7 @@
4984  /* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> */
4985
4986  #include <linux/sched.h>
4987 +#include <linux/vs_tag.h>
4988  #include "nfsd.h"
4989  #include "auth.h"
4990
4991 @@ -35,6 +36,9 @@ int nfsd_setuser(struct svc_rqst *rqstp,
4992
4993         new->fsuid = rqstp->rq_cred.cr_uid;
4994         new->fsgid = rqstp->rq_cred.cr_gid;
4995 +       /* FIXME: this desperately needs a tag :)
4996 +       new->xid = (vxid_t)INOTAG_TAG(DX_TAG_NFSD, cred.cr_uid, cred.cr_gid, 0);
4997 +                       */
4998
4999         rqgi = rqstp->rq_cred.cr_group_info;
5000
5001 diff -NurpP --minimal linux-4.9.76/fs/nfsd/nfs3xdr.c linux-4.9.76-vs2.3.9.5/fs/nfsd/nfs3xdr.c
5002 --- linux-4.9.76/fs/nfsd/nfs3xdr.c      2018-01-13 21:28:57.000000000 +0000
5003 +++ linux-4.9.76-vs2.3.9.5/fs/nfsd/nfs3xdr.c    2018-01-10 02:50:49.000000000 +0000
5004 @@ -8,6 +8,7 @@
5005
5006  #include <linux/namei.h>
5007  #include <linux/sunrpc/svc_xprt.h>
5008 +#include <linux/vs_tag.h>
5009  #include "xdr3.h"
5010  #include "auth.h"
5011  #include "netns.h"
5012 @@ -98,6 +99,8 @@ static __be32 *
5013  decode_sattr3(__be32 *p, struct iattr *iap)
5014  {
5015         u32     tmp;
5016 +       kuid_t  kuid = GLOBAL_ROOT_UID;
5017 +       kgid_t  kgid = GLOBAL_ROOT_GID;
5018
5019         iap->ia_valid = 0;
5020
5021 @@ -106,15 +109,18 @@ decode_sattr3(__be32 *p, struct iattr *i
5022                 iap->ia_mode = ntohl(*p++);
5023         }
5024         if (*p++) {
5025 -               iap->ia_uid = make_kuid(&init_user_ns, ntohl(*p++));
5026 +               kuid = make_kuid(&init_user_ns, ntohl(*p++));
5027                 if (uid_valid(iap->ia_uid))
5028                         iap->ia_valid |= ATTR_UID;
5029         }
5030         if (*p++) {
5031 -               iap->ia_gid = make_kgid(&init_user_ns, ntohl(*p++));
5032 +               kgid = make_kgid(&init_user_ns, ntohl(*p++));
5033                 if (gid_valid(iap->ia_gid))
5034                         iap->ia_valid |= ATTR_GID;
5035         }
5036 +       iap->ia_uid = INOTAG_KUID(DX_TAG_NFSD, kuid, kgid);
5037 +       iap->ia_gid = INOTAG_KGID(DX_TAG_NFSD, kuid, kgid);
5038 +       iap->ia_tag = INOTAG_KTAG(DX_TAG_NFSD, kuid, kgid, GLOBAL_ROOT_TAG);
5039         if (*p++) {
5040                 u64     newsize;
5041
5042 @@ -167,8 +173,12 @@ encode_fattr3(struct svc_rqst *rqstp, __
5043         *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
5044         *p++ = htonl((u32) (stat->mode & S_IALLUGO));
5045         *p++ = htonl((u32) stat->nlink);
5046 -       *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
5047 -       *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
5048 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
5049 +               TAGINO_KUID(0 /* FIXME: DX_TAG(dentry->d_inode) */,
5050 +               stat->uid, stat->tag)));
5051 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
5052 +               TAGINO_KGID(0 /* FIXME: DX_TAG(dentry->d_inode) */,
5053 +               stat->gid, stat->tag)));
5054         if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) {
5055                 p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
5056         } else {
5057 diff -NurpP --minimal linux-4.9.76/fs/nfsd/nfs4xdr.c linux-4.9.76-vs2.3.9.5/fs/nfsd/nfs4xdr.c
5058 --- linux-4.9.76/fs/nfsd/nfs4xdr.c      2018-01-13 21:28:58.000000000 +0000
5059 +++ linux-4.9.76-vs2.3.9.5/fs/nfsd/nfs4xdr.c    2018-01-10 02:50:49.000000000 +0000
5060 @@ -40,6 +40,7 @@
5061  #include <linux/utsname.h>
5062  #include <linux/pagemap.h>
5063  #include <linux/sunrpc/svcauth_gss.h>
5064 +#include <linux/vs_tag.h>
5065
5066  #include "idmap.h"
5067  #include "acl.h"
5068 @@ -2677,12 +2678,16 @@ out_acl:
5069                 *p++ = cpu_to_be32(stat.nlink);
5070         }
5071         if (bmval1 & FATTR4_WORD1_OWNER) {
5072 -               status = nfsd4_encode_user(xdr, rqstp, stat.uid);
5073 +               status = nfsd4_encode_user(xdr, rqstp,
5074 +                       TAGINO_KUID(DX_TAG(dentry->d_inode),
5075 +                               stat.uid, stat.tag));
5076                 if (status)
5077                         goto out;
5078         }
5079         if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
5080 -               status = nfsd4_encode_group(xdr, rqstp, stat.gid);
5081 +               status = nfsd4_encode_group(xdr, rqstp,
5082 +                       TAGINO_KGID(DX_TAG(dentry->d_inode),
5083 +                               stat.gid, stat.tag));
5084                 if (status)
5085                         goto out;
5086         }
5087 diff -NurpP --minimal linux-4.9.76/fs/nfsd/nfsxdr.c linux-4.9.76-vs2.3.9.5/fs/nfsd/nfsxdr.c
5088 --- linux-4.9.76/fs/nfsd/nfsxdr.c       2018-01-13 21:28:58.000000000 +0000
5089 +++ linux-4.9.76-vs2.3.9.5/fs/nfsd/nfsxdr.c     2018-01-10 02:50:49.000000000 +0000
5090 @@ -7,6 +7,7 @@
5091  #include "vfs.h"
5092  #include "xdr.h"
5093  #include "auth.h"
5094 +#include <linux/vs_tag.h>
5095
5096  #define NFSDDBG_FACILITY               NFSDDBG_XDR
5097
5098 @@ -89,6 +90,8 @@ static __be32 *
5099  decode_sattr(__be32 *p, struct iattr *iap)
5100  {
5101         u32     tmp, tmp1;
5102 +       kuid_t  kuid = GLOBAL_ROOT_UID;
5103 +       kgid_t  kgid = GLOBAL_ROOT_GID;
5104
5105         iap->ia_valid = 0;
5106
5107 @@ -101,15 +104,18 @@ decode_sattr(__be32 *p, struct iattr *ia
5108                 iap->ia_mode = tmp;
5109         }
5110         if ((tmp = ntohl(*p++)) != (u32)-1) {
5111 -               iap->ia_uid = make_kuid(&init_user_ns, tmp);
5112 +               kuid = make_kuid(&init_user_ns, tmp);
5113                 if (uid_valid(iap->ia_uid))
5114                         iap->ia_valid |= ATTR_UID;
5115         }
5116         if ((tmp = ntohl(*p++)) != (u32)-1) {
5117 -               iap->ia_gid = make_kgid(&init_user_ns, tmp);
5118 +               kgid = make_kgid(&init_user_ns, tmp);
5119                 if (gid_valid(iap->ia_gid))
5120                         iap->ia_valid |= ATTR_GID;
5121         }
5122 +       iap->ia_uid = INOTAG_KUID(DX_TAG_NFSD, kuid, kgid);
5123 +       iap->ia_gid = INOTAG_KGID(DX_TAG_NFSD, kuid, kgid);
5124 +       iap->ia_tag = INOTAG_KTAG(DX_TAG_NFSD, kuid, kgid, GLOBAL_ROOT_TAG);
5125         if ((tmp = ntohl(*p++)) != (u32)-1) {
5126                 iap->ia_valid |= ATTR_SIZE;
5127                 iap->ia_size = tmp;
5128 @@ -154,8 +160,10 @@ encode_fattr(struct svc_rqst *rqstp, __b
5129         *p++ = htonl(nfs_ftypes[type >> 12]);
5130         *p++ = htonl((u32) stat->mode);
5131         *p++ = htonl((u32) stat->nlink);
5132 -       *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
5133 -       *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
5134 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
5135 +               TAGINO_KUID(DX_TAG(dentry->d_inode), stat->uid, stat->tag)));
5136 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
5137 +               TAGINO_KGID(DX_TAG(dentry->d_inode), stat->gid, stat->tag)));
5138
5139         if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
5140                 *p++ = htonl(NFS_MAXPATHLEN);
5141 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/dlmglue.c linux-4.9.76-vs2.3.9.5/fs/ocfs2/dlmglue.c
5142 --- linux-4.9.76/fs/ocfs2/dlmglue.c     2018-01-13 21:28:58.000000000 +0000
5143 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/dlmglue.c   2018-01-10 02:50:49.000000000 +0000
5144 @@ -2120,6 +2120,7 @@ static void __ocfs2_stuff_meta_lvb(struc
5145         lvb->lvb_iclusters = cpu_to_be32(oi->ip_clusters);
5146         lvb->lvb_iuid      = cpu_to_be32(i_uid_read(inode));
5147         lvb->lvb_igid      = cpu_to_be32(i_gid_read(inode));
5148 +       lvb->lvb_itag      = cpu_to_be16(i_tag_read(inode));
5149         lvb->lvb_imode     = cpu_to_be16(inode->i_mode);
5150         lvb->lvb_inlink    = cpu_to_be16(inode->i_nlink);
5151         lvb->lvb_iatime_packed  =
5152 @@ -2170,6 +2171,7 @@ static void ocfs2_refresh_inode_from_lvb
5153
5154         i_uid_write(inode, be32_to_cpu(lvb->lvb_iuid));
5155         i_gid_write(inode, be32_to_cpu(lvb->lvb_igid));
5156 +       i_tag_write(inode, be16_to_cpu(lvb->lvb_itag));
5157         inode->i_mode    = be16_to_cpu(lvb->lvb_imode);
5158         set_nlink(inode, be16_to_cpu(lvb->lvb_inlink));
5159         ocfs2_unpack_timespec(&inode->i_atime,
5160 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/dlmglue.h linux-4.9.76-vs2.3.9.5/fs/ocfs2/dlmglue.h
5161 --- linux-4.9.76/fs/ocfs2/dlmglue.h     2018-01-13 21:28:58.000000000 +0000
5162 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/dlmglue.h   2018-01-10 02:50:49.000000000 +0000
5163 @@ -46,7 +46,8 @@ struct ocfs2_meta_lvb {
5164         __be16       lvb_inlink;
5165         __be32       lvb_iattr;
5166         __be32       lvb_igeneration;
5167 -       __be32       lvb_reserved2;
5168 +       __be16       lvb_itag;
5169 +       __be16       lvb_reserved2;
5170  };
5171
5172  #define OCFS2_QINFO_LVB_VERSION 1
5173 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/file.c linux-4.9.76-vs2.3.9.5/fs/ocfs2/file.c
5174 --- linux-4.9.76/fs/ocfs2/file.c        2018-01-13 21:28:58.000000000 +0000
5175 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/file.c      2018-01-10 02:50:49.000000000 +0000
5176 @@ -1151,7 +1151,7 @@ int ocfs2_setattr(struct dentry *dentry,
5177                 attr->ia_valid &= ~ATTR_SIZE;
5178
5179  #define OCFS2_VALID_ATTRS (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE \
5180 -                          | ATTR_GID | ATTR_UID | ATTR_MODE)
5181 +                          | ATTR_GID | ATTR_UID | ATTR_TAG | ATTR_MODE)
5182         if (!(attr->ia_valid & OCFS2_VALID_ATTRS))
5183                 return 0;
5184
5185 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/inode.c linux-4.9.76-vs2.3.9.5/fs/ocfs2/inode.c
5186 --- linux-4.9.76/fs/ocfs2/inode.c       2016-12-11 19:17:54.000000000 +0000
5187 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/inode.c     2018-01-10 02:50:49.000000000 +0000
5188 @@ -28,6 +28,7 @@
5189  #include <linux/highmem.h>
5190  #include <linux/pagemap.h>
5191  #include <linux/quotaops.h>
5192 +#include <linux/vs_tag.h>
5193
5194  #include <asm/byteorder.h>
5195
5196 @@ -87,11 +88,13 @@ void ocfs2_set_inode_flags(struct inode
5197  {
5198         unsigned int flags = OCFS2_I(inode)->ip_attr;
5199
5200 -       inode->i_flags &= ~(S_IMMUTABLE |
5201 +       inode->i_flags &= ~(S_IMMUTABLE | S_IXUNLINK |
5202                 S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
5203
5204         if (flags & OCFS2_IMMUTABLE_FL)
5205                 inode->i_flags |= S_IMMUTABLE;
5206 +       if (flags & OCFS2_IXUNLINK_FL)
5207 +               inode->i_flags |= S_IXUNLINK;
5208
5209         if (flags & OCFS2_SYNC_FL)
5210                 inode->i_flags |= S_SYNC;
5211 @@ -101,25 +104,44 @@ void ocfs2_set_inode_flags(struct inode
5212                 inode->i_flags |= S_NOATIME;
5213         if (flags & OCFS2_DIRSYNC_FL)
5214                 inode->i_flags |= S_DIRSYNC;
5215 +
5216 +       inode->i_vflags &= ~(V_BARRIER | V_COW);
5217 +
5218 +       if (flags & OCFS2_BARRIER_FL)
5219 +               inode->i_vflags |= V_BARRIER;
5220 +       if (flags & OCFS2_COW_FL)
5221 +               inode->i_vflags |= V_COW;
5222  }
5223
5224  /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */
5225  void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi)
5226  {
5227         unsigned int flags = oi->vfs_inode.i_flags;
5228 +       unsigned int vflags = oi->vfs_inode.i_vflags;
5229 +
5230 +       oi->ip_attr &= ~(OCFS2_SYNC_FL | OCFS2_APPEND_FL |
5231 +                       OCFS2_IMMUTABLE_FL | OCFS2_IXUNLINK_FL |
5232 +                       OCFS2_NOATIME_FL | OCFS2_DIRSYNC_FL |
5233 +                       OCFS2_BARRIER_FL | OCFS2_COW_FL);
5234 +
5235 +       if (flags & S_IMMUTABLE)
5236 +               oi->ip_attr |= OCFS2_IMMUTABLE_FL;
5237 +       if (flags & S_IXUNLINK)
5238 +               oi->ip_attr |= OCFS2_IXUNLINK_FL;
5239
5240 -       oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL|
5241 -                       OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL);
5242         if (flags & S_SYNC)
5243                 oi->ip_attr |= OCFS2_SYNC_FL;
5244         if (flags & S_APPEND)
5245                 oi->ip_attr |= OCFS2_APPEND_FL;
5246 -       if (flags & S_IMMUTABLE)
5247 -               oi->ip_attr |= OCFS2_IMMUTABLE_FL;
5248         if (flags & S_NOATIME)
5249                 oi->ip_attr |= OCFS2_NOATIME_FL;
5250         if (flags & S_DIRSYNC)
5251                 oi->ip_attr |= OCFS2_DIRSYNC_FL;
5252 +
5253 +       if (vflags & V_BARRIER)
5254 +               oi->ip_attr |= OCFS2_BARRIER_FL;
5255 +       if (vflags & V_COW)
5256 +               oi->ip_attr |= OCFS2_COW_FL;
5257  }
5258
5259  struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno)
5260 @@ -278,6 +300,8 @@ void ocfs2_populate_inode(struct inode *
5261         struct super_block *sb;
5262         struct ocfs2_super *osb;
5263         int use_plocks = 1;
5264 +       uid_t uid;
5265 +       gid_t gid;
5266
5267         sb = inode->i_sb;
5268         osb = OCFS2_SB(sb);
5269 @@ -306,8 +330,12 @@ void ocfs2_populate_inode(struct inode *
5270         inode->i_generation = le32_to_cpu(fe->i_generation);
5271         inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
5272         inode->i_mode = le16_to_cpu(fe->i_mode);
5273 -       i_uid_write(inode, le32_to_cpu(fe->i_uid));
5274 -       i_gid_write(inode, le32_to_cpu(fe->i_gid));
5275 +       uid = le32_to_cpu(fe->i_uid);
5276 +       gid = le32_to_cpu(fe->i_gid);
5277 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), uid, gid));
5278 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), uid, gid));
5279 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), uid, gid,
5280 +               /* le16_to_cpu(raw_inode->i_raw_tag) */ 0));
5281
5282         /* Fast symlinks will have i_size but no allocated clusters. */
5283         if (S_ISLNK(inode->i_mode) && !fe->i_clusters) {
5284 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/inode.h linux-4.9.76-vs2.3.9.5/fs/ocfs2/inode.h
5285 --- linux-4.9.76/fs/ocfs2/inode.h       2016-12-11 19:17:54.000000000 +0000
5286 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/inode.h     2018-01-10 02:50:49.000000000 +0000
5287 @@ -155,6 +155,7 @@ int ocfs2_mark_inode_dirty(handle_t *han
5288
5289  void ocfs2_set_inode_flags(struct inode *inode);
5290  void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
5291 +int ocfs2_sync_flags(struct inode *inode, int, int);
5292
5293  static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
5294  {
5295 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/ioctl.c linux-4.9.76-vs2.3.9.5/fs/ocfs2/ioctl.c
5296 --- linux-4.9.76/fs/ocfs2/ioctl.c       2016-12-11 19:17:54.000000000 +0000
5297 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/ioctl.c     2018-01-10 02:50:49.000000000 +0000
5298 @@ -76,7 +76,41 @@ static int ocfs2_get_inode_attr(struct i
5299         return status;
5300  }
5301
5302 -static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
5303 +int ocfs2_sync_flags(struct inode *inode, int flags, int vflags)
5304 +{
5305 +       struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
5306 +       struct buffer_head *bh = NULL;
5307 +       handle_t *handle = NULL;
5308 +       int status;
5309 +
5310 +       status = ocfs2_inode_lock(inode, &bh, 1);
5311 +       if (status < 0) {
5312 +               mlog_errno(status);
5313 +               return status;
5314 +       }
5315 +       handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
5316 +       if (IS_ERR(handle)) {
5317 +               status = PTR_ERR(handle);
5318 +               mlog_errno(status);
5319 +               goto bail_unlock;
5320 +       }
5321 +
5322 +       inode->i_flags = flags;
5323 +       inode->i_vflags = vflags;
5324 +       ocfs2_get_inode_flags(OCFS2_I(inode));
5325 +
5326 +       status = ocfs2_mark_inode_dirty(handle, inode, bh);
5327 +       if (status < 0)
5328 +               mlog_errno(status);
5329 +
5330 +       ocfs2_commit_trans(osb, handle);
5331 +bail_unlock:
5332 +       ocfs2_inode_unlock(inode, 1);
5333 +       brelse(bh);
5334 +       return status;
5335 +}
5336 +
5337 +int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
5338                                 unsigned mask)
5339  {
5340         struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
5341 @@ -116,6 +150,11 @@ static int ocfs2_set_inode_attr(struct i
5342                         goto bail_unlock;
5343         }
5344
5345 +       if (IS_BARRIER(inode)) {
5346 +               vxwprintk_task(1, "messing with the barrier.");
5347 +               goto bail_unlock;
5348 +       }
5349 +
5350         handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
5351         if (IS_ERR(handle)) {
5352                 status = PTR_ERR(handle);
5353 @@ -839,6 +878,7 @@ bail:
5354         return status;
5355  }
5356
5357 +
5358  long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
5359  {
5360         struct inode *inode = file_inode(filp);
5361 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/namei.c linux-4.9.76-vs2.3.9.5/fs/ocfs2/namei.c
5362 --- linux-4.9.76/fs/ocfs2/namei.c       2016-12-11 19:17:54.000000000 +0000
5363 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/namei.c     2018-01-10 02:50:49.000000000 +0000
5364 @@ -41,6 +41,7 @@
5365  #include <linux/slab.h>
5366  #include <linux/highmem.h>
5367  #include <linux/quotaops.h>
5368 +#include <linux/vs_tag.h>
5369
5370  #include <cluster/masklog.h>
5371
5372 @@ -516,6 +517,7 @@ static int __ocfs2_mknod_locked(struct i
5373         struct ocfs2_extent_list *fel;
5374         u16 feat;
5375         struct ocfs2_inode_info *oi = OCFS2_I(inode);
5376 +       ktag_t ktag;
5377
5378         *new_fe_bh = NULL;
5379
5380 @@ -553,8 +555,13 @@ static int __ocfs2_mknod_locked(struct i
5381         fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
5382         fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
5383         fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
5384 -       fe->i_uid = cpu_to_le32(i_uid_read(inode));
5385 -       fe->i_gid = cpu_to_le32(i_gid_read(inode));
5386 +
5387 +       ktag = make_ktag(&init_user_ns, dx_current_fstag(osb->sb));
5388 +       fe->i_uid = cpu_to_le32(from_kuid(&init_user_ns,
5389 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, ktag)));
5390 +       fe->i_gid = cpu_to_le32(from_kgid(&init_user_ns,
5391 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, ktag)));
5392 +       inode->i_tag = ktag; /* is this correct? */
5393         fe->i_mode = cpu_to_le16(inode->i_mode);
5394         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
5395                 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
5396 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/ocfs2.h linux-4.9.76-vs2.3.9.5/fs/ocfs2/ocfs2.h
5397 --- linux-4.9.76/fs/ocfs2/ocfs2.h       2018-01-13 21:28:58.000000000 +0000
5398 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/ocfs2.h     2018-01-10 02:50:49.000000000 +0000
5399 @@ -289,6 +289,7 @@ enum ocfs2_mount_options
5400         OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT = 1 << 15,  /* Journal Async Commit */
5401         OCFS2_MOUNT_ERRORS_CONT = 1 << 16, /* Return EIO to the calling process on error */
5402         OCFS2_MOUNT_ERRORS_ROFS = 1 << 17, /* Change filesystem to read-only on error */
5403 +       OCFS2_MOUNT_TAGGED = 1 << 18, /* use tagging */
5404  };
5405
5406  #define OCFS2_OSB_SOFT_RO      0x0001
5407 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/ocfs2_fs.h linux-4.9.76-vs2.3.9.5/fs/ocfs2/ocfs2_fs.h
5408 --- linux-4.9.76/fs/ocfs2/ocfs2_fs.h    2016-12-11 19:17:54.000000000 +0000
5409 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/ocfs2_fs.h  2018-01-10 02:50:49.000000000 +0000
5410 @@ -275,6 +275,11 @@
5411  #define OCFS2_TOPDIR_FL                        FS_TOPDIR_FL    /* Top of directory hierarchies*/
5412  #define OCFS2_RESERVED_FL              FS_RESERVED_FL  /* reserved for ext2 lib */
5413
5414 +#define OCFS2_IXUNLINK_FL              FS_IXUNLINK_FL  /* Immutable invert on unlink */
5415 +
5416 +#define OCFS2_BARRIER_FL               FS_BARRIER_FL   /* Barrier for chroot() */
5417 +#define OCFS2_COW_FL                   FS_COW_FL       /* Copy on Write marker */
5418 +
5419  #define OCFS2_FL_VISIBLE               FS_FL_USER_VISIBLE      /* User visible flags */
5420  #define OCFS2_FL_MODIFIABLE            FS_FL_USER_MODIFIABLE   /* User modifiable flags */
5421
5422 diff -NurpP --minimal linux-4.9.76/fs/ocfs2/super.c linux-4.9.76-vs2.3.9.5/fs/ocfs2/super.c
5423 --- linux-4.9.76/fs/ocfs2/super.c       2016-12-11 19:17:54.000000000 +0000
5424 +++ linux-4.9.76-vs2.3.9.5/fs/ocfs2/super.c     2018-01-10 02:50:49.000000000 +0000
5425 @@ -188,6 +188,7 @@ enum {
5426         Opt_dir_resv_level,
5427         Opt_journal_async_commit,
5428         Opt_err_cont,
5429 +       Opt_tag, Opt_notag, Opt_tagid,
5430         Opt_err,
5431  };
5432
5433 @@ -221,6 +222,9 @@ static const match_table_t tokens = {
5434         {Opt_dir_resv_level, "dir_resv_level=%u"},
5435         {Opt_journal_async_commit, "journal_async_commit"},
5436         {Opt_err_cont, "errors=continue"},
5437 +       {Opt_tag, "tag"},
5438 +       {Opt_notag, "notag"},
5439 +       {Opt_tagid, "tagid=%u"},
5440         {Opt_err, NULL}
5441  };
5442
5443 @@ -673,6 +677,13 @@ static int ocfs2_remount(struct super_bl
5444                 goto out;
5445         }
5446
5447 +       if ((osb->s_mount_opt & OCFS2_MOUNT_TAGGED) !=
5448 +           (parsed_options.mount_opt & OCFS2_MOUNT_TAGGED)) {
5449 +               ret = -EINVAL;
5450 +               mlog(ML_ERROR, "Cannot change tagging on remount\n");
5451 +               goto out;
5452 +       }
5453 +
5454         /* We're going to/from readonly mode. */
5455         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
5456                 /* Disable quota accounting before remounting RO */
5457 @@ -1162,6 +1173,9 @@ static int ocfs2_fill_super(struct super
5458
5459         ocfs2_complete_mount_recovery(osb);
5460
5461 +       if (osb->s_mount_opt & OCFS2_MOUNT_TAGGED)
5462 +               sb->s_flags |= MS_TAGGED;
5463 +
5464         if (ocfs2_mount_local(osb))
5465                 snprintf(nodestr, sizeof(nodestr), "local");
5466         else
5467 @@ -1481,6 +1495,20 @@ static int ocfs2_parse_options(struct su
5468                 case Opt_journal_async_commit:
5469                         mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
5470                         break;
5471 +#ifndef CONFIG_TAGGING_NONE
5472 +               case Opt_tag:
5473 +                       mopt->mount_opt |= OCFS2_MOUNT_TAGGED;
5474 +                       break;
5475 +               case Opt_notag:
5476 +                       mopt->mount_opt &= ~OCFS2_MOUNT_TAGGED;
5477 +                       break;
5478 +#endif
5479 +#ifdef CONFIG_PROPAGATE
5480 +               case Opt_tagid:
5481 +                       /* use args[0] */
5482 +                       mopt->mount_opt |= OCFS2_MOUNT_TAGGED;
5483 +                       break;
5484 +#endif
5485                 default:
5486                         mlog(ML_ERROR,
5487                              "Unrecognized mount option \"%s\" "
5488 diff -NurpP --minimal linux-4.9.76/fs/open.c linux-4.9.76-vs2.3.9.5/fs/open.c
5489 --- linux-4.9.76/fs/open.c      2018-01-13 21:28:58.000000000 +0000
5490 +++ linux-4.9.76-vs2.3.9.5/fs/open.c    2018-01-13 22:17:33.000000000 +0000
5491 @@ -31,6 +31,11 @@
5492  #include <linux/ima.h>
5493  #include <linux/dnotify.h>
5494  #include <linux/compat.h>
5495 +#include <linux/vs_base.h>
5496 +#include <linux/vs_limit.h>
5497 +#include <linux/vs_tag.h>
5498 +#include <linux/vs_cowbl.h>
5499 +#include <linux/vserver/dlimit.h>
5500
5501  #include "internal.h"
5502
5503 @@ -65,12 +70,17 @@ int do_truncate(struct dentry *dentry, l
5504         return ret;
5505  }
5506
5507 -long vfs_truncate(const struct path *path, loff_t length)
5508 +long vfs_truncate(struct path *path, loff_t length)
5509  {
5510         struct inode *inode;
5511         struct dentry *upperdentry;
5512         long error;
5513
5514 +#ifdef CONFIG_VSERVER_COWBL
5515 +       error = cow_check_and_break(path);
5516 +       if (error)
5517 +               goto out;
5518 +#endif
5519         inode = path->dentry->d_inode;
5520
5521         /* For directories it's -EISDIR, for other non-regulars - -EINVAL */
5522 @@ -565,6 +575,13 @@ SYSCALL_DEFINE3(fchmodat, int, dfd, cons
5523         unsigned int lookup_flags = LOOKUP_FOLLOW;
5524  retry:
5525         error = user_path_at(dfd, filename, lookup_flags, &path);
5526 +#ifdef CONFIG_VSERVER_COWBL
5527 +       if (!error) {
5528 +               error = cow_check_and_break(&path);
5529 +               if (error)
5530 +                       path_put(&path);
5531 +       }
5532 +#endif
5533         if (!error) {
5534                 error = chmod_common(&path, mode);
5535                 path_put(&path);
5536 @@ -599,13 +616,15 @@ retry_deleg:
5537                 if (!uid_valid(uid))
5538                         return -EINVAL;
5539                 newattrs.ia_valid |= ATTR_UID;
5540 -               newattrs.ia_uid = uid;
5541 +               newattrs.ia_uid = make_kuid(&init_user_ns,
5542 +                       dx_map_uid(user));
5543         }
5544         if (group != (gid_t) -1) {
5545                 if (!gid_valid(gid))
5546                         return -EINVAL;
5547                 newattrs.ia_valid |= ATTR_GID;
5548 -               newattrs.ia_gid = gid;
5549 +               newattrs.ia_gid = make_kgid(&init_user_ns,
5550 +                       dx_map_gid(group));
5551         }
5552         if (!S_ISDIR(inode->i_mode))
5553                 newattrs.ia_valid |=
5554 @@ -643,6 +662,10 @@ retry:
5555         error = mnt_want_write(path.mnt);
5556         if (error)
5557                 goto out_release;
5558 +#ifdef CONFIG_VSERVER_COWBL
5559 +       error = cow_check_and_break(&path);
5560 +       if (!error)
5561 +#endif
5562         error = chown_common(&path, user, group);
5563         mnt_drop_write(path.mnt);
5564  out_release:
5565 diff -NurpP --minimal linux-4.9.76/fs/proc/array.c linux-4.9.76-vs2.3.9.5/fs/proc/array.c
5566 --- linux-4.9.76/fs/proc/array.c        2018-01-13 21:28:58.000000000 +0000
5567 +++ linux-4.9.76-vs2.3.9.5/fs/proc/array.c      2018-01-13 01:59:39.000000000 +0000
5568 @@ -85,6 +85,8 @@
5569  #include <linux/string_helpers.h>
5570  #include <linux/user_namespace.h>
5571  #include <linux/fs_struct.h>
5572 +#include <linux/vs_context.h>
5573 +#include <linux/vs_network.h>
5574
5575  #include <asm/pgtable.h>
5576  #include <asm/processor.h>
5577 @@ -169,6 +171,9 @@ static inline void task_state(struct seq
5578         ppid = pid_alive(p) ?
5579                 task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
5580
5581 +       if (unlikely(vx_current_initpid(p->pid)))
5582 +               ppid = 0;
5583 +
5584         tracer = ptrace_parent(p);
5585         if (tracer)
5586                 tpid = task_pid_nr_ns(tracer, ns);
5587 @@ -306,8 +311,8 @@ static inline void task_sig(struct seq_f
5588         render_sigset_t(m, "SigCgt:\t", &caught);
5589  }
5590
5591 -static void render_cap_t(struct seq_file *m, const char *header,
5592 -                       kernel_cap_t *a)
5593 +void render_cap_t(struct seq_file *m, const char *header,
5594 +                       struct vx_info *vxi, kernel_cap_t *a)
5595  {
5596         unsigned __capi;
5597
5598 @@ -334,11 +339,12 @@ static inline void task_cap(struct seq_f
5599         cap_ambient     = cred->cap_ambient;
5600         rcu_read_unlock();
5601
5602 -       render_cap_t(m, "CapInh:\t", &cap_inheritable);
5603 -       render_cap_t(m, "CapPrm:\t", &cap_permitted);
5604 -       render_cap_t(m, "CapEff:\t", &cap_effective);
5605 -       render_cap_t(m, "CapBnd:\t", &cap_bset);
5606 -       render_cap_t(m, "CapAmb:\t", &cap_ambient);
5607 +       /* FIXME: maybe move the p->vx_info masking to __task_cred() ? */
5608 +       render_cap_t(m, "CapInh:\t", p->vx_info, &cap_inheritable);
5609 +       render_cap_t(m, "CapPrm:\t", p->vx_info, &cap_permitted);
5610 +       render_cap_t(m, "CapEff:\t", p->vx_info, &cap_effective);
5611 +       render_cap_t(m, "CapBnd:\t", p->vx_info, &cap_bset);
5612 +       render_cap_t(m, "CapAmb:\t", p->vx_info, &cap_ambient);
5613  }
5614
5615  static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
5616 @@ -365,6 +371,43 @@ static void task_cpus_allowed(struct seq
5617                    cpumask_pr_args(&task->cpus_allowed));
5618  }
5619
5620 +int proc_pid_nsproxy(struct seq_file *m, struct pid_namespace *ns,
5621 +                       struct pid *pid, struct task_struct *task)
5622 +{
5623 +       seq_printf(m,   "Proxy:\t%p(%c)\n"
5624 +                       "Count:\t%u\n"
5625 +                       "uts:\t%p(%c)\n"
5626 +                       "ipc:\t%p(%c)\n"
5627 +                       "mnt:\t%p(%c)\n"
5628 +                       "pid:\t%p(%c)\n"
5629 +                       "net:\t%p(%c)\n",
5630 +                       task->nsproxy,
5631 +                       (task->nsproxy == init_task.nsproxy ? 'I' : '-'),
5632 +                       atomic_read(&task->nsproxy->count),
5633 +                       task->nsproxy->uts_ns,
5634 +                       (task->nsproxy->uts_ns == init_task.nsproxy->uts_ns ? 'I' : '-'),
5635 +                       task->nsproxy->ipc_ns,
5636 +                       (task->nsproxy->ipc_ns == init_task.nsproxy->ipc_ns ? 'I' : '-'),
5637 +                       task->nsproxy->mnt_ns,
5638 +                       (task->nsproxy->mnt_ns == init_task.nsproxy->mnt_ns ? 'I' : '-'),
5639 +                       task->nsproxy->pid_ns_for_children,
5640 +                       (task->nsproxy->pid_ns_for_children ==
5641 +                               init_task.nsproxy->pid_ns_for_children ? 'I' : '-'),
5642 +                       task->nsproxy->net_ns,
5643 +                       (task->nsproxy->net_ns == init_task.nsproxy->net_ns ? 'I' : '-'));
5644 +       return 0;
5645 +}
5646 +
5647 +void task_vs_id(struct seq_file *m, struct task_struct *task)
5648 +{
5649 +       if (task_vx_flags(task, VXF_HIDE_VINFO, 0))
5650 +               return;
5651 +
5652 +       seq_printf(m, "VxID:\t%d\n", vx_task_xid(task));
5653 +       seq_printf(m, "NxID:\t%d\n", nx_task_nid(task));
5654 +}
5655 +
5656 +
5657  int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
5658                         struct pid *pid, struct task_struct *task)
5659  {
5660 @@ -382,6 +425,7 @@ int proc_pid_status(struct seq_file *m,
5661         task_seccomp(m, task);
5662         task_cpus_allowed(m, task);
5663         cpuset_task_status_allowed(m, task);
5664 +       task_vs_id(m, task);
5665         task_context_switch_counts(m, task);
5666         return 0;
5667  }
5668 @@ -494,6 +538,17 @@ static int do_task_stat(struct seq_file
5669         /* convert nsec -> ticks */
5670         start_time = nsec_to_clock_t(task->real_start_time);
5671
5672 +       /* fixup start time for virt uptime */
5673 +       if (vx_flags(VXF_VIRT_UPTIME, 0)) {
5674 +               unsigned long long bias =
5675 +                       current->vx_info->cvirt.bias_clock;
5676 +
5677 +               if (start_time > bias)
5678 +                       start_time -= bias;
5679 +               else
5680 +                       start_time = 0;
5681 +       }
5682 +
5683         seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
5684         seq_put_decimal_ll(m, " ", ppid);
5685         seq_put_decimal_ll(m, " ", pgid);
5686 diff -NurpP --minimal linux-4.9.76/fs/proc/base.c linux-4.9.76-vs2.3.9.5/fs/proc/base.c
5687 --- linux-4.9.76/fs/proc/base.c 2018-01-13 21:28:58.000000000 +0000
5688 +++ linux-4.9.76-vs2.3.9.5/fs/proc/base.c       2018-01-13 01:59:11.000000000 +0000
5689 @@ -87,6 +87,8 @@
5690  #include <linux/slab.h>
5691  #include <linux/flex_array.h>
5692  #include <linux/posix-timers.h>
5693 +#include <linux/vs_context.h>
5694 +#include <linux/vs_network.h>
5695  #ifdef CONFIG_HARDWALL
5696  #include <asm/hardwall.h>
5697  #endif
5698 @@ -1063,10 +1065,15 @@ static int __set_oom_adj(struct file *fi
5699         mutex_lock(&oom_adj_mutex);
5700         if (legacy) {
5701                 if (oom_adj < task->signal->oom_score_adj &&
5702 -                               !capable(CAP_SYS_RESOURCE)) {
5703 +                   !vx_capable(CAP_SYS_RESOURCE, VXC_OOM_ADJUST)) {
5704                         err = -EACCES;
5705                         goto err_unlock;
5706                 }
5707 +
5708 +               /* prevent guest processes from circumventing the oom killer */
5709 +               if (vx_current_xid() && (oom_adj == OOM_DISABLE))
5710 +                       oom_adj = OOM_ADJUST_MIN;
5711 +
5712                 /*
5713                  * /proc/pid/oom_adj is provided for legacy purposes, ask users to use
5714                  * /proc/pid/oom_score_adj instead.
5715 @@ -1696,6 +1703,8 @@ struct inode *proc_pid_make_inode(struct
5716                 inode->i_gid = cred->egid;
5717                 rcu_read_unlock();
5718         }
5719 +       /* procfs is xid tagged */
5720 +       i_tag_write(inode, (vtag_t)vx_task_xid(task));
5721         security_task_to_inode(task, inode);
5722
5723  out:
5724 @@ -1741,6 +1750,8 @@ int pid_getattr(struct vfsmount *mnt, st
5725
5726  /* dentry stuff */
5727
5728 +// static unsigned name_to_int(struct dentry *dentry);
5729 +
5730  /*
5731   *     Exceptional case: normally we are not allowed to unhash a busy
5732   * directory. In this case, however, we can do it - no aliasing problems
5733 @@ -1769,6 +1780,19 @@ int pid_revalidate(struct dentry *dentry
5734         task = get_proc_task(inode);
5735
5736         if (task) {
5737 +               unsigned pid = name_to_int(&dentry->d_name);
5738 +
5739 +               if (pid != ~0U && pid != vx_map_pid(task->pid) &&
5740 +                       pid != __task_pid_nr_ns(task, PIDTYPE_PID,
5741 +                               task_active_pid_ns(task))) {
5742 +                       vxdprintk(VXD_CBIT(misc, 10),
5743 +                               VS_Q("%*s") " dropped by pid_revalidate(%d!=%d)",
5744 +                               dentry->d_name.len, dentry->d_name.name,
5745 +                               pid, vx_map_pid(task->pid));
5746 +                       put_task_struct(task);
5747 +                       d_drop(dentry);
5748 +                       return 0;
5749 +               }
5750                 if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
5751                     task_dumpable(task)) {
5752                         rcu_read_lock();
5753 @@ -2408,6 +2432,13 @@ static struct dentry *proc_pident_lookup
5754         if (!task)
5755                 goto out_no_task;
5756
5757 +       /* TODO: maybe we can come up with a generic approach? */
5758 +       if (task_vx_flags(task, VXF_HIDE_VINFO, 0) &&
5759 +               (dentry->d_name.len == 5) &&
5760 +               (!memcmp(dentry->d_name.name, "vinfo", 5) ||
5761 +               !memcmp(dentry->d_name.name, "ninfo", 5)))
5762 +               goto out;
5763 +
5764         /*
5765          * Yes, it does not scale. And it should not. Don't add
5766          * new entries into /proc/<tgid>/ without very good reasons.
5767 @@ -2847,6 +2878,11 @@ static int proc_pid_personality(struct s
5768  static const struct file_operations proc_task_operations;
5769  static const struct inode_operations proc_task_inode_operations;
5770
5771 +extern int proc_pid_vx_info(struct seq_file *,
5772 +       struct pid_namespace *, struct pid *, struct task_struct *);
5773 +extern int proc_pid_nx_info(struct seq_file *,
5774 +       struct pid_namespace *, struct pid *, struct task_struct *);
5775 +
5776  static const struct pid_entry tgid_base_stuff[] = {
5777         DIR("task",       S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
5778         DIR("fd",         S_IRUSR|S_IXUSR, proc_fd_inode_operations, proc_fd_operations),
5779 @@ -2911,6 +2947,8 @@ static const struct pid_entry tgid_base_
5780  #ifdef CONFIG_CGROUPS
5781         ONE("cgroup",  S_IRUGO, proc_cgroup_show),
5782  #endif
5783 +       ONE("vinfo",      S_IRUGO, proc_pid_vx_info),
5784 +       ONE("ninfo",      S_IRUGO, proc_pid_nx_info),
5785         ONE("oom_score",  S_IRUGO, proc_oom_score),
5786         REG("oom_adj",    S_IRUGO|S_IWUSR, proc_oom_adj_operations),
5787         REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
5788 @@ -3126,7 +3164,7 @@ retry:
5789         iter.task = NULL;
5790         pid = find_ge_pid(iter.tgid, ns);
5791         if (pid) {
5792 -               iter.tgid = pid_nr_ns(pid, ns);
5793 +               iter.tgid = pid_unmapped_nr_ns(pid, ns);
5794                 iter.task = pid_task(pid, PIDTYPE_PID);
5795                 /* What we to know is if the pid we have find is the
5796                  * pid of a thread_group_leader.  Testing for task
5797 @@ -3186,8 +3224,10 @@ int proc_pid_readdir(struct file *file,
5798                 if (!has_pid_permissions(ns, iter.task, 2))
5799                         continue;
5800
5801 -               len = snprintf(name, sizeof(name), "%d", iter.tgid);
5802 +               len = snprintf(name, sizeof(name), "%d", vx_map_tgid(iter.tgid));
5803                 ctx->pos = iter.tgid + TGID_OFFSET;
5804 +               if (!vx_proc_task_visible(iter.task))
5805 +                       continue;
5806                 if (!proc_fill_cache(file, ctx, name, len,
5807                                      proc_pid_instantiate, iter.task, NULL)) {
5808                         put_task_struct(iter.task);
5809 @@ -3324,6 +3364,7 @@ static const struct pid_entry tid_base_s
5810         REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations),
5811         REG("setgroups",  S_IRUGO|S_IWUSR, proc_setgroups_operations),
5812  #endif
5813 +       ONE("nsproxy",  S_IRUGO, proc_pid_nsproxy),
5814  };
5815
5816  static int proc_tid_base_readdir(struct file *file, struct dir_context *ctx)
5817 @@ -3390,6 +3431,8 @@ static struct dentry *proc_task_lookup(s
5818         tid = name_to_int(&dentry->d_name);
5819         if (tid == ~0U)
5820                 goto out;
5821 +       if (vx_current_initpid(tid))
5822 +               goto out;
5823
5824         ns = dentry->d_sb->s_fs_info;
5825         rcu_read_lock();
5826 diff -NurpP --minimal linux-4.9.76/fs/proc/generic.c linux-4.9.76-vs2.3.9.5/fs/proc/generic.c
5827 --- linux-4.9.76/fs/proc/generic.c      2018-01-13 21:28:58.000000000 +0000
5828 +++ linux-4.9.76-vs2.3.9.5/fs/proc/generic.c    2018-01-10 02:50:49.000000000 +0000
5829 @@ -22,6 +22,7 @@
5830  #include <linux/bitops.h>
5831  #include <linux/spinlock.h>
5832  #include <linux/completion.h>
5833 +#include <linux/vserver/inode.h>
5834  #include <asm/uaccess.h>
5835
5836  #include "internal.h"
5837 @@ -66,8 +67,16 @@ static struct proc_dir_entry *pde_subdir
5838                         node = node->rb_left;
5839                 else if (result > 0)
5840                         node = node->rb_right;
5841 -               else
5842 +               else {
5843 +                       if (!vx_hide_check(0, de->vx_flags)) {
5844 +                               vxdprintk(VXD_CBIT(misc, 9),
5845 +                                       VS_Q("%*s")
5846 +                                       " hidden in pde_subdir_find()",
5847 +                                       de->namelen, de->name);
5848 +                               return 0;
5849 +                       }
5850                         return de;
5851 +               }
5852         }
5853         return NULL;
5854  }
5855 @@ -241,6 +250,8 @@ struct dentry *proc_lookup_de(struct pro
5856                         return ERR_PTR(-ENOMEM);
5857                 d_set_d_op(dentry, &simple_dentry_operations);
5858                 d_add(dentry, inode);
5859 +                       /* generic proc entries belong to the host */
5860 +                       i_tag_write(inode, 0);
5861                 return NULL;
5862         }
5863         read_unlock(&proc_subdir_lock);
5864 @@ -287,6 +298,12 @@ int proc_readdir_de(struct proc_dir_entr
5865         do {
5866                 struct proc_dir_entry *next;
5867                 pde_get(de);
5868 +               if (!vx_hide_check(0, de->vx_flags)) {
5869 +                       vxdprintk(VXD_CBIT(misc, 9),
5870 +                               VS_Q("%*s") " hidden in proc_readdir_de()",
5871 +                               de->namelen, de->name);
5872 +                       goto skip;
5873 +               }
5874                 read_unlock(&proc_subdir_lock);
5875                 if (!dir_emit(ctx, de->name, de->namelen,
5876                             de->low_ino, de->mode >> 12)) {
5877 @@ -294,6 +311,7 @@ int proc_readdir_de(struct proc_dir_entr
5878                         return 0;
5879                 }
5880                 read_lock(&proc_subdir_lock);
5881 +       skip:
5882                 ctx->pos++;
5883                 next = pde_subdir_next(de);
5884                 pde_put(de);
5885 @@ -387,6 +405,7 @@ static struct proc_dir_entry *__proc_cre
5886         ent->mode = mode;
5887         ent->nlink = nlink;
5888         ent->subdir = RB_ROOT;
5889 +       ent->vx_flags = IATTR_PROC_DEFAULT;
5890         atomic_set(&ent->count, 1);
5891         spin_lock_init(&ent->pde_unload_lock);
5892         INIT_LIST_HEAD(&ent->pde_openers);
5893 @@ -413,7 +432,8 @@ struct proc_dir_entry *proc_symlink(cons
5894                                 kfree(ent->data);
5895                                 kfree(ent);
5896                                 ent = NULL;
5897 -                       }
5898 +                       } else
5899 +                               ent->vx_flags = IATTR_PROC_SYMLINK;
5900                 } else {
5901                         kfree(ent);
5902                         ent = NULL;
5903 diff -NurpP --minimal linux-4.9.76/fs/proc/inode.c linux-4.9.76-vs2.3.9.5/fs/proc/inode.c
5904 --- linux-4.9.76/fs/proc/inode.c        2016-12-11 19:17:54.000000000 +0000
5905 +++ linux-4.9.76-vs2.3.9.5/fs/proc/inode.c      2018-01-10 02:50:49.000000000 +0000
5906 @@ -432,6 +432,8 @@ struct inode *proc_get_inode(struct supe
5907                         inode->i_uid = de->uid;
5908                         inode->i_gid = de->gid;
5909                 }
5910 +               if (de->vx_flags)
5911 +                       PROC_I(inode)->vx_flags = de->vx_flags;
5912                 if (de->size)
5913                         inode->i_size = de->size;
5914                 if (de->nlink)
5915 diff -NurpP --minimal linux-4.9.76/fs/proc/internal.h linux-4.9.76-vs2.3.9.5/fs/proc/internal.h
5916 --- linux-4.9.76/fs/proc/internal.h     2016-12-11 19:17:54.000000000 +0000
5917 +++ linux-4.9.76-vs2.3.9.5/fs/proc/internal.h   2018-01-13 01:48:13.000000000 +0000
5918 @@ -14,6 +14,7 @@
5919  #include <linux/spinlock.h>
5920  #include <linux/atomic.h>
5921  #include <linux/binfmts.h>
5922 +#include <linux/vs_pid.h>
5923
5924  struct ctl_table_header;
5925  struct mempolicy;
5926 @@ -34,6 +35,7 @@ struct proc_dir_entry {
5927         nlink_t nlink;
5928         kuid_t uid;
5929         kgid_t gid;
5930 +       int vx_flags;
5931         loff_t size;
5932         const struct inode_operations *proc_iops;
5933         const struct file_operations *proc_fops;
5934 @@ -51,15 +53,22 @@ struct proc_dir_entry {
5935         char name[];
5936  };
5937
5938 +struct vx_info;
5939 +struct nx_info;
5940 +
5941  union proc_op {
5942         int (*proc_get_link)(struct dentry *, struct path *);
5943         int (*proc_show)(struct seq_file *m,
5944                 struct pid_namespace *ns, struct pid *pid,
5945                 struct task_struct *task);
5946 +       int (*proc_vs_read)(char *page);
5947 +       int (*proc_vxi_read)(struct vx_info *vxi, char *page);
5948 +       int (*proc_nxi_read)(struct nx_info *nxi, char *page);
5949  };
5950
5951  struct proc_inode {
5952         struct pid *pid;
5953 +       int vx_flags;
5954         unsigned int fd;
5955         union proc_op op;
5956         struct proc_dir_entry *pde;
5957 @@ -92,11 +101,16 @@ static inline struct pid *proc_pid(struc
5958         return PROC_I(inode)->pid;
5959  }
5960
5961 -static inline struct task_struct *get_proc_task(struct inode *inode)
5962 +static inline struct task_struct *get_proc_task_real(struct inode *inode)
5963  {
5964         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
5965  }
5966
5967 +static inline struct task_struct *get_proc_task(struct inode *inode)
5968 +{
5969 +       return vx_get_proc_task(inode, proc_pid(inode));
5970 +}
5971 +
5972  static inline int task_dumpable(struct task_struct *task)
5973  {
5974         int dumpable = 0;
5975 @@ -155,6 +169,8 @@ extern int proc_pid_status(struct seq_fi
5976                            struct pid *, struct task_struct *);
5977  extern int proc_pid_statm(struct seq_file *, struct pid_namespace *,
5978                           struct pid *, struct task_struct *);
5979 +extern int proc_pid_nsproxy(struct seq_file *m, struct pid_namespace *ns,
5980 +                           struct pid *pid, struct task_struct *task);
5981
5982  /*
5983   * base.c
5984 diff -NurpP --minimal linux-4.9.76/fs/proc/loadavg.c linux-4.9.76-vs2.3.9.5/fs/proc/loadavg.c
5985 --- linux-4.9.76/fs/proc/loadavg.c      2016-12-11 19:17:54.000000000 +0000
5986 +++ linux-4.9.76-vs2.3.9.5/fs/proc/loadavg.c    2018-01-10 02:50:49.000000000 +0000
5987 @@ -12,15 +12,27 @@
5988
5989  static int loadavg_proc_show(struct seq_file *m, void *v)
5990  {
5991 +       unsigned long running;
5992 +       unsigned int threads;
5993         unsigned long avnrun[3];
5994
5995         get_avenrun(avnrun, FIXED_1/200, 0);
5996
5997 +       if (vx_flags(VXF_VIRT_LOAD, 0)) {
5998 +               struct vx_info *vxi = current_vx_info();
5999 +
6000 +               running = atomic_read(&vxi->cvirt.nr_running);
6001 +               threads = atomic_read(&vxi->cvirt.nr_threads);
6002 +       } else {
6003 +               running = nr_running();
6004 +               threads = nr_threads;
6005 +       }
6006 +
6007         seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d\n",
6008                 LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
6009                 LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
6010                 LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),
6011 -               nr_running(), nr_threads,
6012 +               running, threads,
6013                 task_active_pid_ns(current)->last_pid);
6014         return 0;
6015  }
6016 diff -NurpP --minimal linux-4.9.76/fs/proc/meminfo.c linux-4.9.76-vs2.3.9.5/fs/proc/meminfo.c
6017 --- linux-4.9.76/fs/proc/meminfo.c      2016-12-11 19:17:54.000000000 +0000
6018 +++ linux-4.9.76-vs2.3.9.5/fs/proc/meminfo.c    2018-01-13 01:55:40.000000000 +0000
6019 @@ -55,7 +55,8 @@ static int meminfo_proc_show(struct seq_
6020         si_swapinfo(&i);
6021         committed = percpu_counter_read_positive(&vm_committed_as);
6022
6023 -       cached = global_node_page_state(NR_FILE_PAGES) -
6024 +       cached = vx_flags(VXF_VIRT_MEM, 0) ?
6025 +               vx_vsi_cached(&i) : global_node_page_state(NR_FILE_PAGES) -
6026                         total_swapcache_pages() - i.bufferram;
6027         if (cached < 0)
6028                 cached = 0;
6029 diff -NurpP --minimal linux-4.9.76/fs/proc/root.c linux-4.9.76-vs2.3.9.5/fs/proc/root.c
6030 --- linux-4.9.76/fs/proc/root.c 2016-12-11 19:17:54.000000000 +0000
6031 +++ linux-4.9.76-vs2.3.9.5/fs/proc/root.c       2018-01-13 01:48:57.000000000 +0000
6032 @@ -20,9 +20,14 @@
6033  #include <linux/mount.h>
6034  #include <linux/pid_namespace.h>
6035  #include <linux/parser.h>
6036 +#include <linux/vserver/inode.h>
6037
6038  #include "internal.h"
6039
6040 +struct proc_dir_entry *proc_virtual;
6041 +
6042 +extern void proc_vx_init(void);
6043 +
6044  enum {
6045         Opt_gid, Opt_hidepid, Opt_err,
6046  };
6047 @@ -145,6 +150,7 @@ void __init proc_root_init(void)
6048         proc_tty_init();
6049         proc_mkdir("bus", NULL);
6050         proc_sys_init();
6051 +       proc_vx_init();
6052  }
6053
6054  static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat
6055 @@ -206,6 +212,7 @@ struct proc_dir_entry proc_root = {
6056         .proc_iops      = &proc_root_inode_operations,
6057         .proc_fops      = &proc_root_operations,
6058         .parent         = &proc_root,
6059 +       .vx_flags       = IATTR_ADMIN | IATTR_WATCH,
6060         .subdir         = RB_ROOT,
6061         .name           = "/proc",
6062  };
6063 diff -NurpP --minimal linux-4.9.76/fs/proc/self.c linux-4.9.76-vs2.3.9.5/fs/proc/self.c
6064 --- linux-4.9.76/fs/proc/self.c 2016-12-11 19:17:54.000000000 +0000
6065 +++ linux-4.9.76-vs2.3.9.5/fs/proc/self.c       2018-01-10 02:50:49.000000000 +0000
6066 @@ -1,6 +1,7 @@
6067  #include <linux/sched.h>
6068  #include <linux/slab.h>
6069  #include <linux/pid_namespace.h>
6070 +#include <linux/vserver/inode.h>
6071  #include "internal.h"
6072
6073  /*
6074 @@ -54,6 +55,8 @@ int proc_setup_self(struct super_block *
6075         self = d_alloc_name(s->s_root, "self");
6076         if (self) {
6077                 struct inode *inode = new_inode_pseudo(s);
6078 +
6079 +               // self->vx_flags = IATTR_PROC_SYMLINK;
6080                 if (inode) {
6081                         inode->i_ino = self_inum;
6082                         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
6083 diff -NurpP --minimal linux-4.9.76/fs/proc/stat.c linux-4.9.76-vs2.3.9.5/fs/proc/stat.c
6084 --- linux-4.9.76/fs/proc/stat.c 2016-12-11 19:17:54.000000000 +0000
6085 +++ linux-4.9.76-vs2.3.9.5/fs/proc/stat.c       2018-01-13 01:47:09.000000000 +0000
6086 @@ -9,8 +9,10 @@
6087  #include <linux/slab.h>
6088  #include <linux/time.h>
6089  #include <linux/irqnr.h>
6090 +#include <linux/vserver/cvirt.h>
6091  #include <linux/cputime.h>
6092  #include <linux/tick.h>
6093 +#include <linux/cpuset.h>
6094
6095  #ifndef arch_irq_stat_cpu
6096  #define arch_irq_stat_cpu(cpu) 0
6097 @@ -86,13 +88,24 @@ static int show_stat(struct seq_file *p,
6098         u64 sum_softirq = 0;
6099         unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
6100         struct timespec64 boottime;
6101 +       cpumask_var_t cpus_allowed;
6102 +       bool virt_cpu = vx_flags(VXF_VIRT_CPU, 0);
6103
6104         user = nice = system = idle = iowait =
6105                 irq = softirq = steal = 0;
6106         guest = guest_nice = 0;
6107         getboottime64(&boottime);
6108
6109 +       if (vx_flags(VXF_VIRT_UPTIME, 0))
6110 +               vx_vsi_boottime(&boottime);
6111 +
6112 +       if (virt_cpu)
6113 +               cpuset_cpus_allowed(current, cpus_allowed);
6114 +
6115         for_each_possible_cpu(i) {
6116 +               if (virt_cpu && !cpumask_test_cpu(i, cpus_allowed))
6117 +                       continue;
6118 +
6119                 user += kcpustat_cpu(i).cpustat[CPUTIME_USER];
6120                 nice += kcpustat_cpu(i).cpustat[CPUTIME_NICE];
6121                 system += kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
6122 @@ -128,6 +141,9 @@ static int show_stat(struct seq_file *p,
6123         seq_putc(p, '\n');
6124
6125         for_each_online_cpu(i) {
6126 +               if (virt_cpu && !cpumask_test_cpu(i, cpus_allowed))
6127 +                       continue;
6128 +
6129                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
6130                 user = kcpustat_cpu(i).cpustat[CPUTIME_USER];
6131                 nice = kcpustat_cpu(i).cpustat[CPUTIME_NICE];
6132 diff -NurpP --minimal linux-4.9.76/fs/proc/uptime.c linux-4.9.76-vs2.3.9.5/fs/proc/uptime.c
6133 --- linux-4.9.76/fs/proc/uptime.c       2016-12-11 19:17:54.000000000 +0000
6134 +++ linux-4.9.76-vs2.3.9.5/fs/proc/uptime.c     2018-01-10 02:50:49.000000000 +0000
6135 @@ -5,6 +5,7 @@
6136  #include <linux/seq_file.h>
6137  #include <linux/time.h>
6138  #include <linux/kernel_stat.h>
6139 +#include <linux/vserver/cvirt.h>
6140  #include <linux/cputime.h>
6141
6142  static int uptime_proc_show(struct seq_file *m, void *v)
6143 @@ -24,6 +25,10 @@ static int uptime_proc_show(struct seq_f
6144         nsec = cputime64_to_jiffies64(idletime) * TICK_NSEC;
6145         idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
6146         idle.tv_nsec = rem;
6147 +
6148 +       if (vx_flags(VXF_VIRT_UPTIME, 0))
6149 +               vx_vsi_uptime(&uptime, &idle);
6150 +
6151         seq_printf(m, "%lu.%02lu %lu.%02lu\n",
6152                         (unsigned long) uptime.tv_sec,
6153                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
6154 diff -NurpP --minimal linux-4.9.76/fs/proc_namespace.c linux-4.9.76-vs2.3.9.5/fs/proc_namespace.c
6155 --- linux-4.9.76/fs/proc_namespace.c    2016-12-11 19:17:54.000000000 +0000
6156 +++ linux-4.9.76-vs2.3.9.5/fs/proc_namespace.c  2018-01-10 02:50:49.000000000 +0000
6157 @@ -46,6 +46,8 @@ static int show_sb_opts(struct seq_file
6158                 { MS_DIRSYNC, ",dirsync" },
6159                 { MS_MANDLOCK, ",mand" },
6160                 { MS_LAZYTIME, ",lazytime" },
6161 +               { MS_TAGGED, ",tag" },
6162 +               { MS_NOTAGCHECK, ",notagcheck" },
6163                 { 0, NULL }
6164         };
6165         const struct proc_fs_info *fs_infop;
6166 @@ -82,6 +84,38 @@ static inline void mangle(struct seq_fil
6167         seq_escape(m, s, " \t\n\\");
6168  }
6169
6170 +#ifdef CONFIG_VSERVER_EXTRA_MNT_CHECK
6171 +
6172 +static int mnt_is_reachable(struct vfsmount *vfsmnt)
6173 +{
6174 +       struct path root;
6175 +       struct dentry *point;
6176 +       struct mount *mnt = real_mount(vfsmnt);
6177 +       struct mount *root_mnt;
6178 +       int ret;
6179 +
6180 +       if (mnt == mnt->mnt_ns->root)
6181 +               return 1;
6182 +
6183 +       rcu_read_lock();
6184 +       root = current->fs->root;
6185 +       root_mnt = real_mount(root.mnt);
6186 +       point = root.dentry;
6187 +
6188 +       while ((mnt != mnt->mnt_parent) && (mnt != root_mnt)) {
6189 +               point = mnt->mnt_mountpoint;
6190 +               mnt = mnt->mnt_parent;
6191 +       }
6192 +       rcu_read_unlock();
6193 +
6194 +       ret = (mnt == root_mnt) && is_subdir(point, root.dentry);
6195 +       return ret;
6196 +}
6197 +
6198 +#else
6199 +#define        mnt_is_reachable(v)     (1)
6200 +#endif
6201 +
6202  static void show_type(struct seq_file *m, struct super_block *sb)
6203  {
6204         mangle(m, sb->s_type->name);
6205 @@ -99,6 +133,17 @@ static int show_vfsmnt(struct seq_file *
6206         struct super_block *sb = mnt_path.dentry->d_sb;
6207         int err;
6208
6209 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6210 +               return SEQ_SKIP;
6211 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6212 +               return SEQ_SKIP;
6213 +
6214 +       if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
6215 +               mnt == current->fs->root.mnt) {
6216 +               seq_puts(m, "/dev/root / ");
6217 +               goto type;
6218 +       }
6219 +
6220         if (sb->s_op->show_devname) {
6221                 err = sb->s_op->show_devname(m, mnt_path.dentry);
6222                 if (err)
6223 @@ -112,6 +157,7 @@ static int show_vfsmnt(struct seq_file *
6224         if (err)
6225                 goto out;
6226         seq_putc(m, ' ');
6227 +type:
6228         show_type(m, sb);
6229         seq_puts(m, __mnt_is_readonly(mnt) ? " ro" : " rw");
6230         err = show_sb_opts(m, sb);
6231 @@ -133,6 +179,11 @@ static int show_mountinfo(struct seq_fil
6232         struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
6233         int err;
6234
6235 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6236 +               return SEQ_SKIP;
6237 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6238 +               return SEQ_SKIP;
6239 +
6240         seq_printf(m, "%i %i %u:%u ", r->mnt_id, r->mnt_parent->mnt_id,
6241                    MAJOR(sb->s_dev), MINOR(sb->s_dev));
6242         if (sb->s_op->show_path) {
6243 @@ -195,6 +246,17 @@ static int show_vfsstat(struct seq_file
6244         struct super_block *sb = mnt_path.dentry->d_sb;
6245         int err;
6246
6247 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6248 +               return SEQ_SKIP;
6249 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6250 +               return SEQ_SKIP;
6251 +
6252 +       if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
6253 +               mnt == current->fs->root.mnt) {
6254 +               seq_puts(m, "device /dev/root mounted on / ");
6255 +               goto type;
6256 +       }
6257 +
6258         /* device */
6259         if (sb->s_op->show_devname) {
6260                 seq_puts(m, "device ");
6261 @@ -216,7 +278,7 @@ static int show_vfsstat(struct seq_file
6262         if (err)
6263                 goto out;
6264         seq_putc(m, ' ');
6265 -
6266 +type:
6267         /* file system type */
6268         seq_puts(m, "with fstype ");
6269         show_type(m, sb);
6270 diff -NurpP --minimal linux-4.9.76/fs/quota/dquot.c linux-4.9.76-vs2.3.9.5/fs/quota/dquot.c
6271 --- linux-4.9.76/fs/quota/dquot.c       2016-12-11 19:17:54.000000000 +0000
6272 +++ linux-4.9.76-vs2.3.9.5/fs/quota/dquot.c     2018-01-10 02:50:49.000000000 +0000
6273 @@ -1658,6 +1658,9 @@ int __dquot_alloc_space(struct inode *in
6274         int reserve = flags & DQUOT_SPACE_RESERVE;
6275         struct dquot **dquots;
6276
6277 +       if ((ret = dl_alloc_space(inode, number)))
6278 +               return ret;
6279 +
6280         if (!dquot_active(inode)) {
6281                 inode_incr_space(inode, number, reserve);
6282                 goto out;
6283 @@ -1710,6 +1713,9 @@ int dquot_alloc_inode(struct inode *inod
6284         struct dquot_warn warn[MAXQUOTAS];
6285         struct dquot * const *dquots;
6286
6287 +       if ((ret = dl_alloc_inode(inode)))
6288 +               return ret;
6289 +
6290         if (!dquot_active(inode))
6291                 return 0;
6292         for (cnt = 0; cnt < MAXQUOTAS; cnt++)
6293 @@ -1812,6 +1818,8 @@ void __dquot_free_space(struct inode *in
6294         struct dquot **dquots;
6295         int reserve = flags & DQUOT_SPACE_RESERVE, index;
6296
6297 +       dl_free_space(inode, number);
6298 +
6299         if (!dquot_active(inode)) {
6300                 inode_decr_space(inode, number, reserve);
6301                 return;
6302 @@ -1856,6 +1864,8 @@ void dquot_free_inode(struct inode *inod
6303         struct dquot * const *dquots;
6304         int index;
6305
6306 +       dl_free_inode(inode);
6307 +
6308         if (!dquot_active(inode))
6309                 return;
6310
6311 diff -NurpP --minimal linux-4.9.76/fs/quota/quota.c linux-4.9.76-vs2.3.9.5/fs/quota/quota.c
6312 --- linux-4.9.76/fs/quota/quota.c       2016-12-11 19:17:54.000000000 +0000
6313 +++ linux-4.9.76-vs2.3.9.5/fs/quota/quota.c     2018-01-10 02:50:49.000000000 +0000
6314 @@ -8,6 +8,7 @@
6315  #include <linux/fs.h>
6316  #include <linux/namei.h>
6317  #include <linux/slab.h>
6318 +#include <linux/vs_context.h>
6319  #include <asm/current.h>
6320  #include <linux/uaccess.h>
6321  #include <linux/kernel.h>
6322 @@ -38,7 +39,7 @@ static int check_quotactl_permission(str
6323                         break;
6324                 /*FALLTHROUGH*/
6325         default:
6326 -               if (!capable(CAP_SYS_ADMIN))
6327 +               if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
6328                         return -EPERM;
6329         }
6330
6331 @@ -768,6 +769,46 @@ static int do_quotactl(struct super_bloc
6332
6333  #ifdef CONFIG_BLOCK
6334
6335 +#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
6336 +
6337 +#include <linux/vroot.h>
6338 +#include <linux/major.h>
6339 +#include <linux/module.h>
6340 +#include <linux/kallsyms.h>
6341 +#include <linux/vserver/debug.h>
6342 +
6343 +static vroot_grb_func *vroot_get_real_bdev = NULL;
6344 +
6345 +static DEFINE_SPINLOCK(vroot_grb_lock);
6346 +
6347 +int register_vroot_grb(vroot_grb_func *func) {
6348 +       int ret = -EBUSY;
6349 +
6350 +       spin_lock(&vroot_grb_lock);
6351 +       if (!vroot_get_real_bdev) {
6352 +               vroot_get_real_bdev = func;
6353 +               ret = 0;
6354 +       }
6355 +       spin_unlock(&vroot_grb_lock);
6356 +       return ret;
6357 +}
6358 +EXPORT_SYMBOL(register_vroot_grb);
6359 +
6360 +int unregister_vroot_grb(vroot_grb_func *func) {
6361 +       int ret = -EINVAL;
6362 +
6363 +       spin_lock(&vroot_grb_lock);
6364 +       if (vroot_get_real_bdev) {
6365 +               vroot_get_real_bdev = NULL;
6366 +               ret = 0;
6367 +       }
6368 +       spin_unlock(&vroot_grb_lock);
6369 +       return ret;
6370 +}
6371 +EXPORT_SYMBOL(unregister_vroot_grb);
6372 +
6373 +#endif
6374 +
6375  /* Return 1 if 'cmd' will block on frozen filesystem */
6376  static int quotactl_cmd_write(int cmd)
6377  {
6378 @@ -809,6 +850,22 @@ static struct super_block *quotactl_bloc
6379         putname(tmp);
6380         if (IS_ERR(bdev))
6381                 return ERR_CAST(bdev);
6382 +#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
6383 +       if (bdev && bdev->bd_inode &&
6384 +               imajor(bdev->bd_inode) == VROOT_MAJOR) {
6385 +               struct block_device *bdnew = (void *)-EINVAL;
6386 +
6387 +               if (vroot_get_real_bdev)
6388 +                       bdnew = vroot_get_real_bdev(bdev);
6389 +               else
6390 +                       vxdprintk(VXD_CBIT(misc, 0),
6391 +                                       "vroot_get_real_bdev not set");
6392 +               bdput(bdev);
6393 +               if (IS_ERR(bdnew))
6394 +                       return ERR_PTR(PTR_ERR(bdnew));
6395 +               bdev = bdnew;
6396 +       }
6397 +#endif
6398         if (quotactl_cmd_write(cmd))
6399                 sb = get_super_thawed(bdev);
6400         else
6401 diff -NurpP --minimal linux-4.9.76/fs/stat.c linux-4.9.76-vs2.3.9.5/fs/stat.c
6402 --- linux-4.9.76/fs/stat.c      2018-01-13 21:28:58.000000000 +0000
6403 +++ linux-4.9.76-vs2.3.9.5/fs/stat.c    2018-01-10 02:50:49.000000000 +0000
6404 @@ -26,6 +26,7 @@ void generic_fillattr(struct inode *inod
6405         stat->nlink = inode->i_nlink;
6406         stat->uid = inode->i_uid;
6407         stat->gid = inode->i_gid;
6408 +       stat->tag = inode->i_tag;
6409         stat->rdev = inode->i_rdev;
6410         stat->size = i_size_read(inode);
6411         stat->atime = inode->i_atime;
6412 diff -NurpP --minimal linux-4.9.76/fs/statfs.c linux-4.9.76-vs2.3.9.5/fs/statfs.c
6413 --- linux-4.9.76/fs/statfs.c    2016-12-11 19:17:54.000000000 +0000
6414 +++ linux-4.9.76-vs2.3.9.5/fs/statfs.c  2018-01-10 02:50:49.000000000 +0000
6415 @@ -7,6 +7,8 @@
6416  #include <linux/statfs.h>
6417  #include <linux/security.h>
6418  #include <linux/uaccess.h>
6419 +#include <linux/vs_base.h>
6420 +#include <linux/vs_dlimit.h>
6421  #include "internal.h"
6422
6423  static int flags_by_mnt(int mnt_flags)
6424 @@ -60,6 +62,8 @@ static int statfs_by_dentry(struct dentr
6425         retval = dentry->d_sb->s_op->statfs(dentry, buf);
6426         if (retval == 0 && buf->f_frsize == 0)
6427                 buf->f_frsize = buf->f_bsize;
6428 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
6429 +               vx_vsi_statfs(dentry->d_sb, buf);
6430         return retval;
6431  }
6432
6433 diff -NurpP --minimal linux-4.9.76/fs/super.c linux-4.9.76-vs2.3.9.5/fs/super.c
6434 --- linux-4.9.76/fs/super.c     2018-01-13 21:28:58.000000000 +0000
6435 +++ linux-4.9.76-vs2.3.9.5/fs/super.c   2018-01-13 01:53:26.000000000 +0000
6436 @@ -34,6 +34,8 @@
6437  #include <linux/fsnotify.h>
6438  #include <linux/lockdep.h>
6439  #include <linux/user_namespace.h>
6440 +#include <linux/magic.h>
6441 +#include <linux/vs_context.h>
6442  #include "internal.h"
6443
6444
6445 @@ -981,7 +983,8 @@ struct dentry *mount_ns(struct file_syst
6446         /* Don't allow mounting unless the caller has CAP_SYS_ADMIN
6447          * over the namespace.
6448          */
6449 -       if (!(flags & MS_KERNMOUNT) && !ns_capable(user_ns, CAP_SYS_ADMIN))
6450 +       if (!(flags & MS_KERNMOUNT) &&
6451 +               !vx_ns_capable(user_ns, CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
6452                 return ERR_PTR(-EPERM);
6453
6454         sb = sget_userns(fs_type, ns_test_super, ns_set_super, flags,
6455 @@ -1191,6 +1194,13 @@ mount_fs(struct file_system_type *type,
6456         WARN_ON(!sb->s_bdi);
6457         sb->s_flags |= MS_BORN;
6458
6459 +       error = -EPERM;
6460 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT) &&
6461 +               !sb->s_bdev &&
6462 +               (sb->s_magic != PROC_SUPER_MAGIC) &&
6463 +               (sb->s_magic != DEVPTS_SUPER_MAGIC))
6464 +               goto out_sb;
6465 +
6466         error = security_sb_kern_mount(sb, flags, secdata);
6467         if (error)
6468                 goto out_sb;
6469 diff -NurpP --minimal linux-4.9.76/fs/utimes.c linux-4.9.76-vs2.3.9.5/fs/utimes.c
6470 --- linux-4.9.76/fs/utimes.c    2016-12-11 19:17:54.000000000 +0000
6471 +++ linux-4.9.76-vs2.3.9.5/fs/utimes.c  2018-01-10 02:50:49.000000000 +0000
6472 @@ -8,6 +8,8 @@
6473  #include <linux/stat.h>
6474  #include <linux/utime.h>
6475  #include <linux/syscalls.h>
6476 +#include <linux/mount.h>
6477 +#include <linux/vs_cowbl.h>
6478  #include <asm/uaccess.h>
6479  #include <asm/unistd.h>
6480
6481 @@ -52,13 +54,19 @@ static int utimes_common(struct path *pa
6482  {
6483         int error;
6484         struct iattr newattrs;
6485 -       struct inode *inode = path->dentry->d_inode;
6486         struct inode *delegated_inode = NULL;
6487 +       struct inode *inode;
6488 +
6489 +       error = cow_check_and_break(path);
6490 +       if (error)
6491 +               goto out;
6492
6493         error = mnt_want_write(path->mnt);
6494         if (error)
6495                 goto out;
6496
6497 +       inode = path->dentry->d_inode;
6498 +
6499         if (times && times[0].tv_nsec == UTIME_NOW &&
6500                      times[1].tv_nsec == UTIME_NOW)
6501                 times = NULL;
6502 diff -NurpP --minimal linux-4.9.76/fs/xattr.c linux-4.9.76-vs2.3.9.5/fs/xattr.c
6503 --- linux-4.9.76/fs/xattr.c     2018-01-13 21:28:58.000000000 +0000
6504 +++ linux-4.9.76-vs2.3.9.5/fs/xattr.c   2018-01-10 02:50:49.000000000 +0000
6505 @@ -21,6 +21,7 @@
6506  #include <linux/audit.h>
6507  #include <linux/vmalloc.h>
6508  #include <linux/posix_acl_xattr.h>
6509 +#include <linux/mount.h>
6510
6511  #include <asm/uaccess.h>
6512
6513 @@ -112,7 +113,7 @@ xattr_permission(struct inode *inode, co
6514          * The trusted.* namespace can only be accessed by privileged users.
6515          */
6516         if (!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) {
6517 -               if (!capable(CAP_SYS_ADMIN))
6518 +               if (!vx_capable(CAP_SYS_ADMIN, VXC_FS_TRUSTED))
6519                         return (mask & MAY_WRITE) ? -EPERM : -ENODATA;
6520                 return 0;
6521         }
6522 diff -NurpP --minimal linux-4.9.76/include/linux/capability.h linux-4.9.76-vs2.3.9.5/include/linux/capability.h
6523 --- linux-4.9.76/include/linux/capability.h     2018-01-13 21:28:59.000000000 +0000
6524 +++ linux-4.9.76-vs2.3.9.5/include/linux/capability.h   2018-01-10 02:50:49.000000000 +0000
6525 @@ -78,7 +78,8 @@ extern const kernel_cap_t __cap_init_eff
6526  #else /* HAND-CODED capability initializers */
6527
6528  #define CAP_LAST_U32                   ((_KERNEL_CAPABILITY_U32S) - 1)
6529 -#define CAP_LAST_U32_VALID_MASK                (CAP_TO_MASK(CAP_LAST_CAP + 1) -1)
6530 +#define CAP_LAST_U32_VALID_MASK                ((CAP_TO_MASK(CAP_LAST_CAP + 1) -1) \
6531 +                                       | CAP_TO_MASK(CAP_CONTEXT))
6532
6533  # define CAP_EMPTY_SET    ((kernel_cap_t){{ 0, 0 }})
6534  # define CAP_FULL_SET     ((kernel_cap_t){{ ~0, CAP_LAST_U32_VALID_MASK }})
6535 diff -NurpP --minimal linux-4.9.76/include/linux/cred.h linux-4.9.76-vs2.3.9.5/include/linux/cred.h
6536 --- linux-4.9.76/include/linux/cred.h   2018-01-13 21:28:59.000000000 +0000
6537 +++ linux-4.9.76-vs2.3.9.5/include/linux/cred.h 2018-01-13 21:30:31.000000000 +0000
6538 @@ -152,6 +152,7 @@ extern void exit_creds(struct task_struc
6539  extern int copy_creds(struct task_struct *, unsigned long);
6540  extern const struct cred *get_task_cred(struct task_struct *);
6541  extern struct cred *cred_alloc_blank(void);
6542 +extern struct cred *__prepare_creds(const struct cred *);
6543  extern struct cred *prepare_creds(void);
6544  extern struct cred *prepare_exec_creds(void);
6545  extern int commit_creds(struct cred *);
6546 @@ -212,6 +213,31 @@ static inline bool cap_ambient_invariant
6547                                           cred->cap_inheritable));
6548  }
6549
6550 +static inline void set_cred_subscribers(struct cred *cred, int n)
6551 +{
6552 +#ifdef CONFIG_DEBUG_CREDENTIALS
6553 +       atomic_set(&cred->subscribers, n);
6554 +#endif
6555 +}
6556 +
6557 +static inline int read_cred_subscribers(const struct cred *cred)
6558 +{
6559 +#ifdef CONFIG_DEBUG_CREDENTIALS
6560 +       return atomic_read(&cred->subscribers);
6561 +#else
6562 +       return 0;
6563 +#endif
6564 +}
6565 +
6566 +static inline void alter_cred_subscribers(const struct cred *_cred, int n)
6567 +{
6568 +#ifdef CONFIG_DEBUG_CREDENTIALS
6569 +       struct cred *cred = (struct cred *) _cred;
6570 +
6571 +       atomic_add(n, &cred->subscribers);
6572 +#endif
6573 +}
6574 +
6575  /**
6576   * get_new_cred - Get a reference on a new set of credentials
6577   * @cred: The new credentials to reference
6578 diff -NurpP --minimal linux-4.9.76/include/linux/dcache.h linux-4.9.76-vs2.3.9.5/include/linux/dcache.h
6579 --- linux-4.9.76/include/linux/dcache.h 2018-01-13 21:28:59.000000000 +0000
6580 +++ linux-4.9.76-vs2.3.9.5/include/linux/dcache.h       2018-01-10 02:50:49.000000000 +0000
6581 @@ -307,8 +307,10 @@ extern char *dentry_path(struct dentry *
6582   */
6583  static inline struct dentry *dget_dlock(struct dentry *dentry)
6584  {
6585 -       if (dentry)
6586 +       if (dentry) {
6587                 dentry->d_lockref.count++;
6588 +               // vx_dentry_inc(dentry);
6589 +       }
6590         return dentry;
6591  }
6592
6593 diff -NurpP --minimal linux-4.9.76/include/linux/devpts_fs.h linux-4.9.76-vs2.3.9.5/include/linux/devpts_fs.h
6594 --- linux-4.9.76/include/linux/devpts_fs.h      2016-12-11 19:17:54.000000000 +0000
6595 +++ linux-4.9.76-vs2.3.9.5/include/linux/devpts_fs.h    2018-01-10 02:50:49.000000000 +0000
6596 @@ -34,5 +34,4 @@ void devpts_pty_kill(struct dentry *);
6597
6598  #endif
6599
6600 -
6601  #endif /* _LINUX_DEVPTS_FS_H */
6602 diff -NurpP --minimal linux-4.9.76/include/linux/fs.h linux-4.9.76-vs2.3.9.5/include/linux/fs.h
6603 --- linux-4.9.76/include/linux/fs.h     2018-01-13 21:28:59.000000000 +0000
6604 +++ linux-4.9.76-vs2.3.9.5/include/linux/fs.h   2018-01-13 22:18:13.000000000 +0000
6605 @@ -225,6 +225,7 @@ typedef int (dio_iodone_t)(struct kiocb
6606  #define ATTR_OPEN      (1 << 15) /* Truncating from open(O_TRUNC) */
6607  #define ATTR_TIMES_SET (1 << 16)
6608  #define ATTR_TOUCH     (1 << 17)
6609 +#define ATTR_TAG       (1 << 18)
6610
6611  /*
6612   * Whiteout is represented by a char device.  The following constants define the
6613 @@ -247,6 +248,7 @@ struct iattr {
6614         umode_t         ia_mode;
6615         kuid_t          ia_uid;
6616         kgid_t          ia_gid;
6617 +       ktag_t          ia_tag;
6618         loff_t          ia_size;
6619         struct timespec ia_atime;
6620         struct timespec ia_mtime;
6621 @@ -606,7 +608,9 @@ struct inode {
6622         unsigned short          i_opflags;
6623         kuid_t                  i_uid;
6624         kgid_t                  i_gid;
6625 -       unsigned int            i_flags;
6626 +       ktag_t                  i_tag;
6627 +       unsigned short          i_flags;
6628 +       unsigned short          i_vflags;
6629
6630  #ifdef CONFIG_FS_POSIX_ACL
6631         struct posix_acl        *i_acl;
6632 @@ -635,6 +639,7 @@ struct inode {
6633                 unsigned int __i_nlink;
6634         };
6635         dev_t                   i_rdev;
6636 +       dev_t                   i_mdev;
6637         loff_t                  i_size;
6638         struct timespec         i_atime;
6639         struct timespec         i_mtime;
6640 @@ -839,14 +844,19 @@ static inline void i_size_write(struct i
6641  #endif
6642  }
6643
6644 +static inline void i_tag_write(struct inode *inode, vtag_t tag)
6645 +{
6646 +       inode->i_tag = make_ktag(&init_user_ns, tag);
6647 +}
6648 +
6649  static inline unsigned iminor(const struct inode *inode)
6650  {
6651 -       return MINOR(inode->i_rdev);
6652 +       return MINOR(inode->i_mdev);
6653  }
6654
6655  static inline unsigned imajor(const struct inode *inode)
6656  {
6657 -       return MAJOR(inode->i_rdev);
6658 +       return MAJOR(inode->i_mdev);
6659  }
6660
6661  extern struct block_device *I_BDEV(struct inode *inode);
6662 @@ -903,6 +913,7 @@ struct file {
6663         loff_t                  f_pos;
6664         struct fown_struct      f_owner;
6665         const struct cred       *f_cred;
6666 +       vxid_t                  f_xid;
6667         struct file_ra_state    f_ra;
6668
6669         u64                     f_version;
6670 @@ -1037,6 +1048,7 @@ struct file_lock {
6671         struct file *fl_file;
6672         loff_t fl_start;
6673         loff_t fl_end;
6674 +       vxid_t fl_xid;
6675
6676         struct fasync_struct *  fl_fasync; /* for lease break notifications */
6677         /* for lease breaks: */
6678 @@ -1469,6 +1481,11 @@ static inline gid_t i_gid_read(const str
6679         return from_kgid(inode->i_sb->s_user_ns, inode->i_gid);
6680  }
6681
6682 +static inline vtag_t i_tag_read(const struct inode *inode)
6683 +{
6684 +       return from_ktag(&init_user_ns, inode->i_tag);
6685 +}
6686 +
6687  static inline void i_uid_write(struct inode *inode, uid_t uid)
6688  {
6689         inode->i_uid = make_kuid(inode->i_sb->s_user_ns, uid);
6690 @@ -1758,6 +1775,7 @@ struct inode_operations {
6691         int (*setattr) (struct dentry *, struct iattr *);
6692         int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
6693         ssize_t (*listxattr) (struct dentry *, char *, size_t);
6694 +       int (*sync_flags) (struct inode *, int, int);
6695         int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
6696                       u64 len);
6697         int (*update_time)(struct inode *, struct timespec *, int);
6698 @@ -1772,6 +1790,7 @@ ssize_t rw_copy_check_uvector(int type,
6699                               unsigned long nr_segs, unsigned long fast_segs,
6700                               struct iovec *fast_pointer,
6701                               struct iovec **ret_pointer);
6702 +ssize_t vfs_sendfile(struct file *, struct file *, loff_t *, size_t, loff_t);
6703
6704  extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
6705  extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *);
6706 @@ -1843,6 +1862,14 @@ struct super_operations {
6707  #else
6708  #define S_DAX          0       /* Make all the DAX code disappear */
6709  #endif
6710 +#define S_IXUNLINK     16384   /* Immutable Invert on unlink */
6711 +
6712 +/* Linux-VServer related Inode flags */
6713 +
6714 +#define V_VALID                1
6715 +#define V_XATTR                2
6716 +#define V_BARRIER      4       /* Barrier for chroot() */
6717 +#define V_COW          8       /* Copy on Write */
6718
6719  /*
6720   * Note that nosuid etc flags are inode-specific: setting some file-system
6721 @@ -1867,10 +1894,13 @@ struct super_operations {
6722  #define IS_MANDLOCK(inode)     __IS_FLG(inode, MS_MANDLOCK)
6723  #define IS_NOATIME(inode)      __IS_FLG(inode, MS_RDONLY|MS_NOATIME)
6724  #define IS_I_VERSION(inode)    __IS_FLG(inode, MS_I_VERSION)
6725 +#define IS_TAGGED(inode)       __IS_FLG(inode, MS_TAGGED)
6726
6727  #define IS_NOQUOTA(inode)      ((inode)->i_flags & S_NOQUOTA)
6728  #define IS_APPEND(inode)       ((inode)->i_flags & S_APPEND)
6729  #define IS_IMMUTABLE(inode)    ((inode)->i_flags & S_IMMUTABLE)
6730 +#define IS_IXUNLINK(inode)     ((inode)->i_flags & S_IXUNLINK)
6731 +#define IS_IXORUNLINK(inode)   ((IS_IXUNLINK(inode) ? S_IMMUTABLE : 0) ^ IS_IMMUTABLE(inode))
6732  #define IS_POSIXACL(inode)     __IS_FLG(inode, MS_POSIXACL)
6733
6734  #define IS_DEADDIR(inode)      ((inode)->i_flags & S_DEAD)
6735 @@ -1890,6 +1920,16 @@ static inline bool HAS_UNMAPPED_ID(struc
6736         return !uid_valid(inode->i_uid) || !gid_valid(inode->i_gid);
6737  }
6738
6739 +#define IS_BARRIER(inode)      (S_ISDIR((inode)->i_mode) && ((inode)->i_vflags & V_BARRIER))
6740 +
6741 +#ifdef CONFIG_VSERVER_COWBL
6742 +#  define IS_COW(inode)                (IS_IXUNLINK(inode) && IS_IMMUTABLE(inode))
6743 +#  define IS_COW_LINK(inode)   (S_ISREG((inode)->i_mode) && ((inode)->i_nlink > 1))
6744 +#else
6745 +#  define IS_COW(inode)                (0)
6746 +#  define IS_COW_LINK(inode)   (0)
6747 +#endif
6748 +
6749  /*
6750   * Inode state bits.  Protected by inode->i_lock
6751   *
6752 @@ -2155,6 +2195,9 @@ extern struct kobject *fs_kobj;
6753  extern int locks_mandatory_locked(struct file *);
6754  extern int locks_mandatory_area(struct inode *, struct file *, loff_t, loff_t, unsigned char);
6755
6756 +#define ATTR_FLAG_BARRIER      512     /* Barrier for chroot() */
6757 +#define ATTR_FLAG_IXUNLINK     1024    /* Immutable invert on unlink */
6758 +
6759  /*
6760   * Candidates for mandatory locking have the setgid bit set
6761   * but no group execute bit -  an otherwise meaningless combination.
6762 @@ -2335,7 +2378,7 @@ struct filename {
6763         const char              iname[];
6764  };
6765
6766 -extern long vfs_truncate(const struct path *, loff_t);
6767 +extern long vfs_truncate(struct path *, loff_t);
6768  extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
6769                        struct file *filp);
6770  extern int vfs_fallocate(struct file *file, int mode, loff_t offset,
6771 @@ -2965,6 +3008,7 @@ extern int dcache_dir_open(struct inode
6772  extern int dcache_dir_close(struct inode *, struct file *);
6773  extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
6774  extern int dcache_readdir(struct file *, struct dir_context *);
6775 +extern int dcache_readdir_filter(struct file *, struct dir_context *, int (*)(struct dentry *));
6776  extern int simple_setattr(struct dentry *, struct iattr *);
6777  extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
6778  extern int simple_statfs(struct dentry *, struct kstatfs *);
6779 diff -NurpP --minimal linux-4.9.76/include/linux/init_task.h linux-4.9.76-vs2.3.9.5/include/linux/init_task.h
6780 --- linux-4.9.76/include/linux/init_task.h      2016-12-11 19:17:54.000000000 +0000
6781 +++ linux-4.9.76-vs2.3.9.5/include/linux/init_task.h    2018-01-10 02:50:49.000000000 +0000
6782 @@ -271,6 +271,10 @@ extern struct task_group root_task_group
6783         INIT_VTIME(tsk)                                                 \
6784         INIT_NUMA_BALANCING(tsk)                                        \
6785         INIT_KASAN(tsk)                                                 \
6786 +       .xid            = 0,                                            \
6787 +       .vx_info        = NULL,                                         \
6788 +       .nid            = 0,                                            \
6789 +       .nx_info        = NULL,                                         \
6790  }
6791
6792
6793 diff -NurpP --minimal linux-4.9.76/include/linux/ipc.h linux-4.9.76-vs2.3.9.5/include/linux/ipc.h
6794 --- linux-4.9.76/include/linux/ipc.h    2016-12-11 19:17:54.000000000 +0000
6795 +++ linux-4.9.76-vs2.3.9.5/include/linux/ipc.h  2018-01-10 02:50:49.000000000 +0000
6796 @@ -16,6 +16,7 @@ struct kern_ipc_perm
6797         key_t           key;
6798         kuid_t          uid;
6799         kgid_t          gid;
6800 +       vxid_t          xid;
6801         kuid_t          cuid;
6802         kgid_t          cgid;
6803         umode_t         mode;
6804 diff -NurpP --minimal linux-4.9.76/include/linux/memcontrol.h linux-4.9.76-vs2.3.9.5/include/linux/memcontrol.h
6805 --- linux-4.9.76/include/linux/memcontrol.h     2018-01-13 21:29:00.000000000 +0000
6806 +++ linux-4.9.76-vs2.3.9.5/include/linux/memcontrol.h   2018-01-10 02:50:49.000000000 +0000
6807 @@ -92,6 +92,7 @@ enum mem_cgroup_events_target {
6808         MEM_CGROUP_NTARGETS,
6809  };
6810
6811 +
6812  #ifdef CONFIG_MEMCG
6813
6814  #define MEM_CGROUP_ID_SHIFT    16
6815 @@ -402,6 +403,11 @@ static inline bool mem_cgroup_is_descend
6816         return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup);
6817  }
6818
6819 +extern u64 mem_cgroup_mem_usage_pages(struct mem_cgroup *memcg);
6820 +extern u64 mem_cgroup_mem_limit_pages(struct mem_cgroup *memcg);
6821 +extern u64 mem_cgroup_memsw_usage_pages(struct mem_cgroup *memcg);
6822 +extern u64 mem_cgroup_memsw_limit_pages(struct mem_cgroup *memcg);
6823 +
6824  static inline bool mm_match_cgroup(struct mm_struct *mm,
6825                                    struct mem_cgroup *memcg)
6826  {
6827 diff -NurpP --minimal linux-4.9.76/include/linux/mount.h linux-4.9.76-vs2.3.9.5/include/linux/mount.h
6828 --- linux-4.9.76/include/linux/mount.h  2018-01-13 21:29:00.000000000 +0000
6829 +++ linux-4.9.76-vs2.3.9.5/include/linux/mount.h        2018-01-10 02:50:49.000000000 +0000
6830 @@ -63,6 +63,9 @@ struct mnt_namespace;
6831  #define MNT_MARKED             0x4000000
6832  #define MNT_UMOUNT             0x8000000
6833
6834 +#define MNT_TAGID      0x10000
6835 +#define MNT_NOTAG      0x20000
6836 +
6837  struct vfsmount {
6838         struct dentry *mnt_root;        /* root of the mounted tree */
6839         struct super_block *mnt_sb;     /* pointer to superblock */
6840 diff -NurpP --minimal linux-4.9.76/include/linux/net.h linux-4.9.76-vs2.3.9.5/include/linux/net.h
6841 --- linux-4.9.76/include/linux/net.h    2016-12-11 19:17:54.000000000 +0000
6842 +++ linux-4.9.76-vs2.3.9.5/include/linux/net.h  2018-01-10 02:50:49.000000000 +0000
6843 @@ -44,6 +44,7 @@ struct net;
6844  #define SOCK_NOSPACE           2
6845  #define SOCK_PASSCRED          3
6846  #define SOCK_PASSSEC           4
6847 +#define SOCK_USER_SOCKET       5
6848
6849  #ifndef ARCH_HAS_SOCKET_TYPES
6850  /**
6851 diff -NurpP --minimal linux-4.9.76/include/linux/netdevice.h linux-4.9.76-vs2.3.9.5/include/linux/netdevice.h
6852 --- linux-4.9.76/include/linux/netdevice.h      2018-01-13 21:29:00.000000000 +0000
6853 +++ linux-4.9.76-vs2.3.9.5/include/linux/netdevice.h    2018-01-10 02:50:49.000000000 +0000
6854 @@ -2474,6 +2474,7 @@ static inline int dev_recursion_level(vo
6855
6856  struct net_device *dev_get_by_index(struct net *net, int ifindex);
6857  struct net_device *__dev_get_by_index(struct net *net, int ifindex);
6858 +struct net_device *dev_get_by_index_real_rcu(struct net *net, int ifindex);
6859  struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
6860  int netdev_get_name(struct net *net, char *name, int ifindex);
6861  int dev_restart(struct net_device *dev);
6862 diff -NurpP --minimal linux-4.9.76/include/linux/nsproxy.h linux-4.9.76-vs2.3.9.5/include/linux/nsproxy.h
6863 --- linux-4.9.76/include/linux/nsproxy.h        2016-12-11 19:17:54.000000000 +0000
6864 +++ linux-4.9.76-vs2.3.9.5/include/linux/nsproxy.h      2018-01-10 02:50:49.000000000 +0000
6865 @@ -3,6 +3,7 @@
6866
6867  #include <linux/spinlock.h>
6868  #include <linux/sched.h>
6869 +#include <linux/vserver/debug.h>
6870
6871  struct mnt_namespace;
6872  struct uts_namespace;
6873 @@ -65,6 +66,7 @@ extern struct nsproxy init_nsproxy;
6874   */
6875
6876  int copy_namespaces(unsigned long flags, struct task_struct *tsk);
6877 +struct nsproxy *copy_nsproxy(struct nsproxy *orig);
6878  void exit_task_namespaces(struct task_struct *tsk);
6879  void switch_task_namespaces(struct task_struct *tsk, struct nsproxy *new);
6880  void free_nsproxy(struct nsproxy *ns);
6881 @@ -72,16 +74,26 @@ int unshare_nsproxy_namespaces(unsigned
6882         struct cred *, struct fs_struct *);
6883  int __init nsproxy_cache_init(void);
6884
6885 -static inline void put_nsproxy(struct nsproxy *ns)
6886 +#define        get_nsproxy(n)  __get_nsproxy(n, __FILE__, __LINE__)
6887 +
6888 +static inline void __get_nsproxy(struct nsproxy *ns,
6889 +       const char *_file, int _line)
6890  {
6891 -       if (atomic_dec_and_test(&ns->count)) {
6892 -               free_nsproxy(ns);
6893 -       }
6894 +       vxlprintk(VXD_CBIT(space, 0), "get_nsproxy(%p[%u])",
6895 +               ns, atomic_read(&ns->count), _file, _line);
6896 +       atomic_inc(&ns->count);
6897  }
6898
6899 -static inline void get_nsproxy(struct nsproxy *ns)
6900 +#define        put_nsproxy(n)  __put_nsproxy(n, __FILE__, __LINE__)
6901 +
6902 +static inline void __put_nsproxy(struct nsproxy *ns,
6903 +       const char *_file, int _line)
6904  {
6905 -       atomic_inc(&ns->count);
6906 +       vxlprintk(VXD_CBIT(space, 0), "put_nsproxy(%p[%u])",
6907 +               ns, atomic_read(&ns->count), _file, _line);
6908 +       if (atomic_dec_and_test(&ns->count)) {
6909 +               free_nsproxy(ns);
6910 +       }
6911  }
6912
6913  #endif
6914 diff -NurpP --minimal linux-4.9.76/include/linux/pid.h linux-4.9.76-vs2.3.9.5/include/linux/pid.h
6915 --- linux-4.9.76/include/linux/pid.h    2018-01-13 21:29:00.000000000 +0000
6916 +++ linux-4.9.76-vs2.3.9.5/include/linux/pid.h  2018-01-10 02:50:49.000000000 +0000
6917 @@ -10,7 +10,8 @@ enum pid_type
6918         PIDTYPE_SID,
6919         PIDTYPE_MAX,
6920         /* only valid to __task_pid_nr_ns() */
6921 -       __PIDTYPE_TGID
6922 +       __PIDTYPE_TGID,
6923 +       __PIDTYPE_REALPID
6924  };
6925
6926  /*
6927 @@ -172,6 +173,7 @@ static inline pid_t pid_nr(struct pid *p
6928  }
6929
6930  pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns);
6931 +pid_t pid_unmapped_nr_ns(struct pid *pid, struct pid_namespace *ns);
6932  pid_t pid_vnr(struct pid *pid);
6933
6934  #define do_each_pid_task(pid, type, task)                              \
6935 diff -NurpP --minimal linux-4.9.76/include/linux/quotaops.h linux-4.9.76-vs2.3.9.5/include/linux/quotaops.h
6936 --- linux-4.9.76/include/linux/quotaops.h       2016-12-11 19:17:54.000000000 +0000
6937 +++ linux-4.9.76-vs2.3.9.5/include/linux/quotaops.h     2018-01-10 02:50:49.000000000 +0000
6938 @@ -8,6 +8,7 @@
6939  #define _LINUX_QUOTAOPS_
6940
6941  #include <linux/fs.h>
6942 +#include <linux/vs_dlimit.h>
6943
6944  #define DQUOT_SPACE_WARN       0x1
6945  #define DQUOT_SPACE_RESERVE    0x2
6946 @@ -214,11 +215,12 @@ static inline void dquot_drop(struct ino
6947
6948  static inline int dquot_alloc_inode(struct inode *inode)
6949  {
6950 -       return 0;
6951 +       return dl_alloc_inode(inode);
6952  }
6953
6954  static inline void dquot_free_inode(struct inode *inode)
6955  {
6956 +       dl_free_inode(inode);
6957  }
6958
6959  static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
6960 @@ -229,6 +231,10 @@ static inline int dquot_transfer(struct
6961  static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
6962                 int flags)
6963  {
6964 +       int ret = 0;
6965 +
6966 +       if ((ret = dl_alloc_space(inode, number)))
6967 +               return ret;
6968         if (!(flags & DQUOT_SPACE_RESERVE))
6969                 inode_add_bytes(inode, number);
6970         return 0;
6971 @@ -239,6 +245,7 @@ static inline void __dquot_free_space(st
6972  {
6973         if (!(flags & DQUOT_SPACE_RESERVE))
6974                 inode_sub_bytes(inode, number);
6975 +       dl_free_space(inode, number);
6976  }
6977
6978  static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
6979 diff -NurpP --minimal linux-4.9.76/include/linux/sched.h linux-4.9.76-vs2.3.9.5/include/linux/sched.h
6980 --- linux-4.9.76/include/linux/sched.h  2018-01-13 21:29:00.000000000 +0000
6981 +++ linux-4.9.76-vs2.3.9.5/include/linux/sched.h        2018-01-10 02:50:49.000000000 +0000
6982 @@ -1717,6 +1717,14 @@ struct task_struct {
6983  #endif
6984         struct seccomp seccomp;
6985
6986 +/* vserver context data */
6987 +       struct vx_info *vx_info;
6988 +       struct nx_info *nx_info;
6989 +
6990 +       vxid_t xid;
6991 +       vnid_t nid;
6992 +       vtag_t tag;
6993 +
6994  /* Thread group tracking */
6995         u32 parent_exec_id;
6996         u32 self_exec_id;
6997 @@ -2110,6 +2118,11 @@ struct pid_namespace;
6998  pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
6999                         struct pid_namespace *ns);
7000
7001 +#include <linux/vserver/base.h>
7002 +#include <linux/vserver/context.h>
7003 +#include <linux/vserver/debug.h>
7004 +#include <linux/vserver/pid.h>
7005 +
7006  static inline pid_t task_pid_nr(struct task_struct *tsk)
7007  {
7008         return tsk->pid;
7009 @@ -2123,7 +2136,8 @@ static inline pid_t task_pid_nr_ns(struc
7010
7011  static inline pid_t task_pid_vnr(struct task_struct *tsk)
7012  {
7013 -       return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
7014 +       // return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
7015 +       return vx_map_pid(__task_pid_nr_ns(tsk, PIDTYPE_PID, NULL));
7016  }
7017
7018
7019 diff -NurpP --minimal linux-4.9.76/include/linux/shmem_fs.h linux-4.9.76-vs2.3.9.5/include/linux/shmem_fs.h
7020 --- linux-4.9.76/include/linux/shmem_fs.h       2016-12-11 19:17:54.000000000 +0000
7021 +++ linux-4.9.76-vs2.3.9.5/include/linux/shmem_fs.h     2018-01-10 02:50:49.000000000 +0000
7022 @@ -10,6 +10,9 @@
7023
7024  /* inode in-kernel data */
7025
7026 +#define TMPFS_SUPER_MAGIC      0x01021994
7027 +
7028 +
7029  struct shmem_inode_info {
7030         spinlock_t              lock;
7031         unsigned int            seals;          /* shmem seals */
7032 diff -NurpP --minimal linux-4.9.76/include/linux/stat.h linux-4.9.76-vs2.3.9.5/include/linux/stat.h
7033 --- linux-4.9.76/include/linux/stat.h   2016-12-11 19:17:54.000000000 +0000
7034 +++ linux-4.9.76-vs2.3.9.5/include/linux/stat.h 2018-01-10 02:50:49.000000000 +0000
7035 @@ -25,6 +25,7 @@ struct kstat {
7036         unsigned int    nlink;
7037         kuid_t          uid;
7038         kgid_t          gid;
7039 +       ktag_t          tag;
7040         dev_t           rdev;
7041         loff_t          size;
7042         struct timespec  atime;
7043 diff -NurpP --minimal linux-4.9.76/include/linux/sunrpc/auth.h linux-4.9.76-vs2.3.9.5/include/linux/sunrpc/auth.h
7044 --- linux-4.9.76/include/linux/sunrpc/auth.h    2016-12-11 19:17:54.000000000 +0000
7045 +++ linux-4.9.76-vs2.3.9.5/include/linux/sunrpc/auth.h  2018-01-10 02:50:49.000000000 +0000
7046 @@ -46,6 +46,7 @@ enum {
7047  struct auth_cred {
7048         kuid_t  uid;
7049         kgid_t  gid;
7050 +       ktag_t  tag;
7051         struct group_info *group_info;
7052         const char *principal;
7053         unsigned long ac_flags;
7054 diff -NurpP --minimal linux-4.9.76/include/linux/sunrpc/clnt.h linux-4.9.76-vs2.3.9.5/include/linux/sunrpc/clnt.h
7055 --- linux-4.9.76/include/linux/sunrpc/clnt.h    2018-01-13 21:29:00.000000000 +0000
7056 +++ linux-4.9.76-vs2.3.9.5/include/linux/sunrpc/clnt.h  2018-01-10 02:50:49.000000000 +0000
7057 @@ -52,7 +52,8 @@ struct rpc_clnt {
7058                                 cl_discrtry : 1,/* disconnect before retry */
7059                                 cl_noretranstimeo: 1,/* No retransmit timeouts */
7060                                 cl_autobind : 1,/* use getport() */
7061 -                               cl_chatty   : 1;/* be verbose */
7062 +                               cl_chatty   : 1,/* be verbose */
7063 +                               cl_tag      : 1;/* context tagging */
7064
7065         struct rpc_rtt *        cl_rtt;         /* RTO estimator data */
7066         const struct rpc_timeout *cl_timeout;   /* Timeout strategy */
7067 diff -NurpP --minimal linux-4.9.76/include/linux/types.h linux-4.9.76-vs2.3.9.5/include/linux/types.h
7068 --- linux-4.9.76/include/linux/types.h  2016-12-11 19:17:54.000000000 +0000
7069 +++ linux-4.9.76-vs2.3.9.5/include/linux/types.h        2018-01-10 02:50:49.000000000 +0000
7070 @@ -32,6 +32,9 @@ typedef __kernel_uid32_t      uid_t;
7071  typedef __kernel_gid32_t       gid_t;
7072  typedef __kernel_uid16_t        uid16_t;
7073  typedef __kernel_gid16_t        gid16_t;
7074 +typedef unsigned int           vxid_t;
7075 +typedef unsigned int           vnid_t;
7076 +typedef unsigned int           vtag_t;
7077
7078  typedef unsigned long          uintptr_t;
7079
7080 diff -NurpP --minimal linux-4.9.76/include/linux/uidgid.h linux-4.9.76-vs2.3.9.5/include/linux/uidgid.h
7081 --- linux-4.9.76/include/linux/uidgid.h 2016-12-11 19:17:54.000000000 +0000
7082 +++ linux-4.9.76-vs2.3.9.5/include/linux/uidgid.h       2018-01-10 02:50:49.000000000 +0000
7083 @@ -21,13 +21,17 @@ typedef struct {
7084         uid_t val;
7085  } kuid_t;
7086
7087 -
7088  typedef struct {
7089         gid_t val;
7090  } kgid_t;
7091
7092 +typedef struct {
7093 +       vtag_t val;
7094 +} ktag_t;
7095 +
7096  #define KUIDT_INIT(value) (kuid_t){ value }
7097  #define KGIDT_INIT(value) (kgid_t){ value }
7098 +#define KTAGT_INIT(value) (ktag_t){ value }
7099
7100  #ifdef CONFIG_MULTIUSER
7101  static inline uid_t __kuid_val(kuid_t uid)
7102 @@ -51,11 +55,18 @@ static inline gid_t __kgid_val(kgid_t gi
7103  }
7104  #endif
7105
7106 +static inline vtag_t __ktag_val(ktag_t tag)
7107 +{
7108 +       return tag.val;
7109 +}
7110 +
7111  #define GLOBAL_ROOT_UID KUIDT_INIT(0)
7112  #define GLOBAL_ROOT_GID KGIDT_INIT(0)
7113 +#define GLOBAL_ROOT_TAG KTAGT_INIT(0)
7114
7115  #define INVALID_UID KUIDT_INIT(-1)
7116  #define INVALID_GID KGIDT_INIT(-1)
7117 +#define INVALID_TAG KTAGT_INIT(-1)
7118
7119  static inline bool uid_eq(kuid_t left, kuid_t right)
7120  {
7121 @@ -67,6 +78,11 @@ static inline bool gid_eq(kgid_t left, k
7122         return __kgid_val(left) == __kgid_val(right);
7123  }
7124
7125 +static inline bool tag_eq(ktag_t left, ktag_t right)
7126 +{
7127 +       return __ktag_val(left) == __ktag_val(right);
7128 +}
7129 +
7130  static inline bool uid_gt(kuid_t left, kuid_t right)
7131  {
7132         return __kuid_val(left) > __kuid_val(right);
7133 @@ -117,13 +133,21 @@ static inline bool gid_valid(kgid_t gid)
7134         return __kgid_val(gid) != (gid_t) -1;
7135  }
7136
7137 +static inline bool tag_valid(ktag_t tag)
7138 +{
7139 +       return !tag_eq(tag, INVALID_TAG);
7140 +}
7141 +
7142  #ifdef CONFIG_USER_NS
7143
7144  extern kuid_t make_kuid(struct user_namespace *from, uid_t uid);
7145  extern kgid_t make_kgid(struct user_namespace *from, gid_t gid);
7146 +extern ktag_t make_ktag(struct user_namespace *from, gid_t gid);
7147
7148  extern uid_t from_kuid(struct user_namespace *to, kuid_t uid);
7149  extern gid_t from_kgid(struct user_namespace *to, kgid_t gid);
7150 +extern vtag_t from_ktag(struct user_namespace *to, ktag_t tag);
7151 +
7152  extern uid_t from_kuid_munged(struct user_namespace *to, kuid_t uid);
7153  extern gid_t from_kgid_munged(struct user_namespace *to, kgid_t gid);
7154
7155 @@ -149,6 +173,11 @@ static inline kgid_t make_kgid(struct us
7156         return KGIDT_INIT(gid);
7157  }
7158
7159 +static inline ktag_t make_ktag(struct user_namespace *from, vtag_t tag)
7160 +{
7161 +       return KTAGT_INIT(tag);
7162 +}
7163 +
7164  static inline uid_t from_kuid(struct user_namespace *to, kuid_t kuid)
7165  {
7166         return __kuid_val(kuid);
7167 @@ -159,6 +188,11 @@ static inline gid_t from_kgid(struct use
7168         return __kgid_val(kgid);
7169  }
7170
7171 +static inline vtag_t from_ktag(struct user_namespace *to, ktag_t ktag)
7172 +{
7173 +       return __ktag_val(ktag);
7174 +}
7175 +
7176  static inline uid_t from_kuid_munged(struct user_namespace *to, kuid_t kuid)
7177  {
7178         uid_t uid = from_kuid(to, kuid);
7179 diff -NurpP --minimal linux-4.9.76/include/linux/vroot.h linux-4.9.76-vs2.3.9.5/include/linux/vroot.h
7180 --- linux-4.9.76/include/linux/vroot.h  1970-01-01 00:00:00.000000000 +0000
7181 +++ linux-4.9.76-vs2.3.9.5/include/linux/vroot.h        2018-01-10 02:50:49.000000000 +0000
7182 @@ -0,0 +1,51 @@
7183 +
7184 +/*
7185 + * include/linux/vroot.h
7186 + *
7187 + * written by Herbert P?tzl, 9/11/2002
7188 + * ported to 2.6 by Herbert P?tzl, 30/12/2004
7189 + *
7190 + * Copyright (C) 2002-2007 by Herbert P?tzl.
7191 + * Redistribution of this file is permitted under the
7192 + * GNU General Public License.
7193 + */
7194 +
7195 +#ifndef _LINUX_VROOT_H
7196 +#define _LINUX_VROOT_H
7197 +
7198 +
7199 +#ifdef __KERNEL__
7200 +
7201 +/* Possible states of device */
7202 +enum {
7203 +       Vr_unbound,
7204 +       Vr_bound,
7205 +};
7206 +
7207 +struct vroot_device {
7208 +       int             vr_number;
7209 +       int             vr_refcnt;
7210 +
7211 +       struct semaphore        vr_ctl_mutex;
7212 +       struct block_device    *vr_device;
7213 +       int                     vr_state;
7214 +};
7215 +
7216 +
7217 +typedef struct block_device *(vroot_grb_func)(struct block_device *);
7218 +
7219 +extern int register_vroot_grb(vroot_grb_func *);
7220 +extern int unregister_vroot_grb(vroot_grb_func *);
7221 +
7222 +#endif /* __KERNEL__ */
7223 +
7224 +#define MAX_VROOT_DEFAULT      8
7225 +
7226 +/*
7227 + * IOCTL commands --- we will commandeer 0x56 ('V')
7228 + */
7229 +
7230 +#define VROOT_SET_DEV          0x5600
7231 +#define VROOT_CLR_DEV          0x5601
7232 +
7233 +#endif /* _LINUX_VROOT_H */
7234 diff -NurpP --minimal linux-4.9.76/include/linux/vs_base.h linux-4.9.76-vs2.3.9.5/include/linux/vs_base.h
7235 --- linux-4.9.76/include/linux/vs_base.h        1970-01-01 00:00:00.000000000 +0000
7236 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_base.h      2018-01-10 02:50:49.000000000 +0000
7237 @@ -0,0 +1,10 @@
7238 +#ifndef _VS_BASE_H
7239 +#define _VS_BASE_H
7240 +
7241 +#include "vserver/base.h"
7242 +#include "vserver/check.h"
7243 +#include "vserver/debug.h"
7244 +
7245 +#else
7246 +#warning duplicate inclusion
7247 +#endif
7248 diff -NurpP --minimal linux-4.9.76/include/linux/vs_context.h linux-4.9.76-vs2.3.9.5/include/linux/vs_context.h
7249 --- linux-4.9.76/include/linux/vs_context.h     1970-01-01 00:00:00.000000000 +0000
7250 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_context.h   2018-01-10 02:50:49.000000000 +0000
7251 @@ -0,0 +1,242 @@
7252 +#ifndef _VS_CONTEXT_H
7253 +#define _VS_CONTEXT_H
7254 +
7255 +#include "vserver/base.h"
7256 +#include "vserver/check.h"
7257 +#include "vserver/context.h"
7258 +#include "vserver/history.h"
7259 +#include "vserver/debug.h"
7260 +
7261 +#include <linux/sched.h>
7262 +
7263 +
7264 +#define get_vx_info(i) __get_vx_info(i, __FILE__, __LINE__, __HERE__)
7265 +
7266 +static inline struct vx_info *__get_vx_info(struct vx_info *vxi,
7267 +       const char *_file, int _line, void *_here)
7268 +{
7269 +       if (!vxi)
7270 +               return NULL;
7271 +
7272 +       vxlprintk(VXD_CBIT(xid, 2), "get_vx_info(%p[#%d.%d])",
7273 +               vxi, vxi ? vxi->vx_id : 0,
7274 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7275 +               _file, _line);
7276 +       __vxh_get_vx_info(vxi, _here);
7277 +
7278 +       atomic_inc(&vxi->vx_usecnt);
7279 +       return vxi;
7280 +}
7281 +
7282 +
7283 +extern void free_vx_info(struct vx_info *);
7284 +
7285 +#define put_vx_info(i) __put_vx_info(i, __FILE__, __LINE__, __HERE__)
7286 +
7287 +static inline void __put_vx_info(struct vx_info *vxi,
7288 +       const char *_file, int _line, void *_here)
7289 +{
7290 +       if (!vxi)
7291 +               return;
7292 +
7293 +       vxlprintk(VXD_CBIT(xid, 2), "put_vx_info(%p[#%d.%d])",
7294 +               vxi, vxi ? vxi->vx_id : 0,
7295 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7296 +               _file, _line);
7297 +       __vxh_put_vx_info(vxi, _here);
7298 +
7299 +       if (atomic_dec_and_test(&vxi->vx_usecnt))
7300 +               free_vx_info(vxi);
7301 +}
7302 +
7303 +
7304 +#define init_vx_info(p, i) \
7305 +       __init_vx_info(p, i, __FILE__, __LINE__, __HERE__)
7306 +
7307 +static inline void __init_vx_info(struct vx_info **vxp, struct vx_info *vxi,
7308 +       const char *_file, int _line, void *_here)
7309 +{
7310 +       if (vxi) {
7311 +               vxlprintk(VXD_CBIT(xid, 3),
7312 +                       "init_vx_info(%p[#%d.%d])",
7313 +                       vxi, vxi ? vxi->vx_id : 0,
7314 +                       vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7315 +                       _file, _line);
7316 +               __vxh_init_vx_info(vxi, vxp, _here);
7317 +
7318 +               atomic_inc(&vxi->vx_usecnt);
7319 +       }
7320 +       *vxp = vxi;
7321 +}
7322 +
7323 +
7324 +#define set_vx_info(p, i) \
7325 +       __set_vx_info(p, i, __FILE__, __LINE__, __HERE__)
7326 +
7327 +static inline void __set_vx_info(struct vx_info **vxp, struct vx_info *vxi,
7328 +       const char *_file, int _line, void *_here)
7329 +{
7330 +       struct vx_info *vxo;
7331 +
7332 +       if (!vxi)
7333 +               return;
7334 +
7335 +       vxlprintk(VXD_CBIT(xid, 3), "set_vx_info(%p[#%d.%d])",
7336 +               vxi, vxi ? vxi->vx_id : 0,
7337 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7338 +               _file, _line);
7339 +       __vxh_set_vx_info(vxi, vxp, _here);
7340 +
7341 +       atomic_inc(&vxi->vx_usecnt);
7342 +       vxo = xchg(vxp, vxi);
7343 +       BUG_ON(vxo);
7344 +}
7345 +
7346 +
7347 +#define clr_vx_info(p) __clr_vx_info(p, __FILE__, __LINE__, __HERE__)
7348 +
7349 +static inline void __clr_vx_info(struct vx_info **vxp,
7350 +       const char *_file, int _line, void *_here)
7351 +{
7352 +       struct vx_info *vxo;
7353 +
7354 +       vxo = xchg(vxp, NULL);
7355 +       if (!vxo)
7356 +               return;
7357 +
7358 +       vxlprintk(VXD_CBIT(xid, 3), "clr_vx_info(%p[#%d.%d])",
7359 +               vxo, vxo ? vxo->vx_id : 0,
7360 +               vxo ? atomic_read(&vxo->vx_usecnt) : 0,
7361 +               _file, _line);
7362 +       __vxh_clr_vx_info(vxo, vxp, _here);
7363 +
7364 +       if (atomic_dec_and_test(&vxo->vx_usecnt))
7365 +               free_vx_info(vxo);
7366 +}
7367 +
7368 +
7369 +#define claim_vx_info(v, p) \
7370 +       __claim_vx_info(v, p, __FILE__, __LINE__, __HERE__)
7371 +
7372 +static inline void __claim_vx_info(struct vx_info *vxi,
7373 +       struct task_struct *task,
7374 +       const char *_file, int _line, void *_here)
7375 +{
7376 +       vxlprintk(VXD_CBIT(xid, 3), "claim_vx_info(%p[#%d.%d.%d]) %p",
7377 +               vxi, vxi ? vxi->vx_id : 0,
7378 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7379 +               vxi ? atomic_read(&vxi->vx_tasks) : 0,
7380 +               task, _file, _line);
7381 +       __vxh_claim_vx_info(vxi, task, _here);
7382 +
7383 +       atomic_inc(&vxi->vx_tasks);
7384 +}
7385 +
7386 +
7387 +extern void unhash_vx_info(struct vx_info *);
7388 +
7389 +#define release_vx_info(v, p) \
7390 +       __release_vx_info(v, p, __FILE__, __LINE__, __HERE__)
7391 +
7392 +static inline void __release_vx_info(struct vx_info *vxi,
7393 +       struct task_struct *task,
7394 +       const char *_file, int _line, void *_here)
7395 +{
7396 +       vxlprintk(VXD_CBIT(xid, 3), "release_vx_info(%p[#%d.%d.%d]) %p",
7397 +               vxi, vxi ? vxi->vx_id : 0,
7398 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7399 +               vxi ? atomic_read(&vxi->vx_tasks) : 0,
7400 +               task, _file, _line);
7401 +       __vxh_release_vx_info(vxi, task, _here);
7402 +
7403 +       might_sleep();
7404 +
7405 +       if (atomic_dec_and_test(&vxi->vx_tasks))
7406 +               unhash_vx_info(vxi);
7407 +}
7408 +
7409 +
7410 +#define task_get_vx_info(p) \
7411 +       __task_get_vx_info(p, __FILE__, __LINE__, __HERE__)
7412 +
7413 +static inline struct vx_info *__task_get_vx_info(struct task_struct *p,
7414 +       const char *_file, int _line, void *_here)
7415 +{
7416 +       struct vx_info *vxi;
7417 +
7418 +       task_lock(p);
7419 +       vxlprintk(VXD_CBIT(xid, 5), "task_get_vx_info(%p)",
7420 +               p, _file, _line);
7421 +       vxi = __get_vx_info(p->vx_info, _file, _line, _here);
7422 +       task_unlock(p);
7423 +       return vxi;
7424 +}
7425 +
7426 +
7427 +static inline void __wakeup_vx_info(struct vx_info *vxi)
7428 +{
7429 +       if (waitqueue_active(&vxi->vx_wait))
7430 +               wake_up_interruptible(&vxi->vx_wait);
7431 +}
7432 +
7433 +
7434 +#define enter_vx_info(v, s) __enter_vx_info(v, s, __FILE__, __LINE__)
7435 +
7436 +static inline void __enter_vx_info(struct vx_info *vxi,
7437 +       struct vx_info_save *vxis, const char *_file, int _line)
7438 +{
7439 +       vxlprintk(VXD_CBIT(xid, 5), "enter_vx_info(%p[#%d],%p) %p[#%d,%p]",
7440 +               vxi, vxi ? vxi->vx_id : 0, vxis, current,
7441 +               current->xid, current->vx_info, _file, _line);
7442 +       vxis->vxi = xchg(&current->vx_info, vxi);
7443 +       vxis->xid = current->xid;
7444 +       current->xid = vxi ? vxi->vx_id : 0;
7445 +}
7446 +
7447 +#define leave_vx_info(s) __leave_vx_info(s, __FILE__, __LINE__)
7448 +
7449 +static inline void __leave_vx_info(struct vx_info_save *vxis,
7450 +       const char *_file, int _line)
7451 +{
7452 +       vxlprintk(VXD_CBIT(xid, 5), "leave_vx_info(%p[#%d,%p]) %p[#%d,%p]",
7453 +               vxis, vxis->xid, vxis->vxi, current,
7454 +               current->xid, current->vx_info, _file, _line);
7455 +       (void)xchg(&current->vx_info, vxis->vxi);
7456 +       current->xid = vxis->xid;
7457 +}
7458 +
7459 +
7460 +static inline void __enter_vx_admin(struct vx_info_save *vxis)
7461 +{
7462 +       vxis->vxi = xchg(&current->vx_info, NULL);
7463 +       vxis->xid = xchg(&current->xid, (vxid_t)0);
7464 +}
7465 +
7466 +static inline void __leave_vx_admin(struct vx_info_save *vxis)
7467 +{
7468 +       (void)xchg(&current->xid, vxis->xid);
7469 +       (void)xchg(&current->vx_info, vxis->vxi);
7470 +}
7471 +
7472 +#define task_is_init(p) \
7473 +       __task_is_init(p, __FILE__, __LINE__, __HERE__)
7474 +
7475 +static inline int __task_is_init(struct task_struct *p,
7476 +       const char *_file, int _line, void *_here)
7477 +{
7478 +       int is_init = is_global_init(p);
7479 +
7480 +       task_lock(p);
7481 +       if (p->vx_info)
7482 +               is_init = p->vx_info->vx_initpid == p->pid;
7483 +       task_unlock(p);
7484 +       return is_init;
7485 +}
7486 +
7487 +extern void exit_vx_info(struct task_struct *, int);
7488 +extern void exit_vx_info_early(struct task_struct *, int);
7489 +
7490 +
7491 +#else
7492 +#warning duplicate inclusion
7493 +#endif
7494 diff -NurpP --minimal linux-4.9.76/include/linux/vs_cowbl.h linux-4.9.76-vs2.3.9.5/include/linux/vs_cowbl.h
7495 --- linux-4.9.76/include/linux/vs_cowbl.h       1970-01-01 00:00:00.000000000 +0000
7496 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_cowbl.h     2018-01-13 22:17:14.000000000 +0000
7497 @@ -0,0 +1,48 @@
7498 +#ifndef _VS_COWBL_H
7499 +#define _VS_COWBL_H
7500 +
7501 +#include <linux/fs.h>
7502 +#include <linux/dcache.h>
7503 +#include <linux/namei.h>
7504 +#include <linux/slab.h>
7505 +
7506 +extern struct dentry *cow_break_link(const char *pathname);
7507 +
7508 +static inline int cow_check_and_break(struct path *path)
7509 +{
7510 +       struct inode *inode = path->dentry->d_inode;
7511 +       int error = 0;
7512 +
7513 +       /* do we need this check? */
7514 +       if (IS_RDONLY(inode))
7515 +               return -EROFS;
7516 +
7517 +       if (IS_COW(inode)) {
7518 +               if (IS_COW_LINK(inode)) {
7519 +                       struct dentry *new_dentry, *old_dentry = path->dentry;
7520 +                       char *pp, *buf;
7521 +
7522 +                       buf = kmalloc(PATH_MAX, GFP_KERNEL);
7523 +                       if (!buf) {
7524 +                               return -ENOMEM;
7525 +                       }
7526 +                       pp = d_path(path, buf, PATH_MAX);
7527 +                       new_dentry = cow_break_link(pp);
7528 +                       kfree(buf);
7529 +                       if (!IS_ERR(new_dentry)) {
7530 +                               path->dentry = new_dentry;
7531 +                               dput(old_dentry);
7532 +                       } else
7533 +                               error = PTR_ERR(new_dentry);
7534 +               } else {
7535 +                       inode->i_flags &= ~(S_IXUNLINK | S_IMMUTABLE);
7536 +                       inode->i_ctime = CURRENT_TIME;
7537 +                       mark_inode_dirty(inode);
7538 +               }
7539 +       }
7540 +       return error;
7541 +}
7542 +
7543 +#else
7544 +#warning duplicate inclusion
7545 +#endif
7546 diff -NurpP --minimal linux-4.9.76/include/linux/vs_cvirt.h linux-4.9.76-vs2.3.9.5/include/linux/vs_cvirt.h
7547 --- linux-4.9.76/include/linux/vs_cvirt.h       1970-01-01 00:00:00.000000000 +0000
7548 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_cvirt.h     2018-01-10 02:50:49.000000000 +0000
7549 @@ -0,0 +1,50 @@
7550 +#ifndef _VS_CVIRT_H
7551 +#define _VS_CVIRT_H
7552 +
7553 +#include "vserver/cvirt.h"
7554 +#include "vserver/context.h"
7555 +#include "vserver/base.h"
7556 +#include "vserver/check.h"
7557 +#include "vserver/debug.h"
7558 +
7559 +
7560 +static inline void vx_activate_task(struct task_struct *p)
7561 +{
7562 +       struct vx_info *vxi;
7563 +
7564 +       if ((vxi = p->vx_info)) {
7565 +               vx_update_load(vxi);
7566 +               atomic_inc(&vxi->cvirt.nr_running);
7567 +       }
7568 +}
7569 +
7570 +static inline void vx_deactivate_task(struct task_struct *p)
7571 +{
7572 +       struct vx_info *vxi;
7573 +
7574 +       if ((vxi = p->vx_info)) {
7575 +               vx_update_load(vxi);
7576 +               atomic_dec(&vxi->cvirt.nr_running);
7577 +       }
7578 +}
7579 +
7580 +static inline void vx_uninterruptible_inc(struct task_struct *p)
7581 +{
7582 +       struct vx_info *vxi;
7583 +
7584 +       if ((vxi = p->vx_info))
7585 +               atomic_inc(&vxi->cvirt.nr_uninterruptible);
7586 +}
7587 +
7588 +static inline void vx_uninterruptible_dec(struct task_struct *p)
7589 +{
7590 +       struct vx_info *vxi;
7591 +
7592 +       if ((vxi = p->vx_info))
7593 +               atomic_dec(&vxi->cvirt.nr_uninterruptible);
7594 +}
7595 +
7596 +
7597 +#else
7598 +#warning duplicate inclusion
7599 +#endif
7600 diff -NurpP --minimal linux-4.9.76/include/linux/vs_device.h linux-4.9.76-vs2.3.9.5/include/linux/vs_device.h
7601 --- linux-4.9.76/include/linux/vs_device.h      1970-01-01 00:00:00.000000000 +0000
7602 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_device.h    2018-01-10 02:50:49.000000000 +0000
7603 @@ -0,0 +1,45 @@
7604 +#ifndef _VS_DEVICE_H
7605 +#define _VS_DEVICE_H
7606 +
7607 +#include "vserver/base.h"
7608 +#include "vserver/device.h"
7609 +#include "vserver/debug.h"
7610 +
7611 +
7612 +#ifdef CONFIG_VSERVER_DEVICE
7613 +
7614 +int vs_map_device(struct vx_info *, dev_t, dev_t *, umode_t);
7615 +
7616 +#define vs_device_perm(v, d, m, p) \
7617 +       ((vs_map_device(current_vx_info(), d, NULL, m) & (p)) == (p))
7618 +
7619 +#else
7620 +
7621 +static inline
7622 +int vs_map_device(struct vx_info *vxi,
7623 +       dev_t device, dev_t *target, umode_t mode)
7624 +{
7625 +       if (target)
7626 +               *target = device;
7627 +       return ~0;
7628 +}
7629 +
7630 +#define vs_device_perm(v, d, m, p) ((p) == (p))
7631 +
7632 +#endif
7633 +
7634 +
7635 +#define vs_map_chrdev(d, t, p) \
7636 +       ((vs_map_device(current_vx_info(), d, t, S_IFCHR) & (p)) == (p))
7637 +#define vs_map_blkdev(d, t, p) \
7638 +       ((vs_map_device(current_vx_info(), d, t, S_IFBLK) & (p)) == (p))
7639 +
7640 +#define vs_chrdev_perm(d, p) \
7641 +       vs_device_perm(current_vx_info(), d, S_IFCHR, p)
7642 +#define vs_blkdev_perm(d, p) \
7643 +       vs_device_perm(current_vx_info(), d, S_IFBLK, p)
7644 +
7645 +
7646 +#else
7647 +#warning duplicate inclusion
7648 +#endif
7649 diff -NurpP --minimal linux-4.9.76/include/linux/vs_dlimit.h linux-4.9.76-vs2.3.9.5/include/linux/vs_dlimit.h
7650 --- linux-4.9.76/include/linux/vs_dlimit.h      1970-01-01 00:00:00.000000000 +0000
7651 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_dlimit.h    2018-01-10 02:50:49.000000000 +0000
7652 @@ -0,0 +1,215 @@
7653 +#ifndef _VS_DLIMIT_H
7654 +#define _VS_DLIMIT_H
7655 +
7656 +#include <linux/fs.h>
7657 +
7658 +#include "vserver/dlimit.h"
7659 +#include "vserver/base.h"
7660 +#include "vserver/debug.h"
7661 +
7662 +
7663 +#define get_dl_info(i) __get_dl_info(i, __FILE__, __LINE__)
7664 +
7665 +static inline struct dl_info *__get_dl_info(struct dl_info *dli,
7666 +       const char *_file, int _line)
7667 +{
7668 +       if (!dli)
7669 +               return NULL;
7670 +       vxlprintk(VXD_CBIT(dlim, 4), "get_dl_info(%p[#%d.%d])",
7671 +               dli, dli ? dli->dl_tag : 0,
7672 +               dli ? atomic_read(&dli->dl_usecnt) : 0,
7673 +               _file, _line);
7674 +       atomic_inc(&dli->dl_usecnt);
7675 +       return dli;
7676 +}
7677 +
7678 +
7679 +#define free_dl_info(i) \
7680 +       call_rcu(&(i)->dl_rcu, rcu_free_dl_info)
7681 +
7682 +#define put_dl_info(i) __put_dl_info(i, __FILE__, __LINE__)
7683 +
7684 +static inline void __put_dl_info(struct dl_info *dli,
7685 +       const char *_file, int _line)
7686 +{
7687 +       if (!dli)
7688 +               return;
7689 +       vxlprintk(VXD_CBIT(dlim, 4), "put_dl_info(%p[#%d.%d])",
7690 +               dli, dli ? dli->dl_tag : 0,
7691 +               dli ? atomic_read(&dli->dl_usecnt) : 0,
7692 +               _file, _line);
7693 +       if (atomic_dec_and_test(&dli->dl_usecnt))
7694 +               free_dl_info(dli);
7695 +}
7696 +
7697 +
7698 +#define __dlimit_char(d)       ((d) ? '*' : ' ')
7699 +
7700 +static inline int __dl_alloc_space(struct super_block *sb,
7701 +       vtag_t tag, dlsize_t nr, const char *file, int line)
7702 +{
7703 +       struct dl_info *dli = NULL;
7704 +       int ret = 0;
7705 +
7706 +       if (nr == 0)
7707 +               goto out;
7708 +       dli = locate_dl_info(sb, tag);
7709 +       if (!dli)
7710 +               goto out;
7711 +
7712 +       spin_lock(&dli->dl_lock);
7713 +       ret = (dli->dl_space_used + nr > dli->dl_space_total);
7714 +       if (!ret)
7715 +               dli->dl_space_used += nr;
7716 +       spin_unlock(&dli->dl_lock);
7717 +       put_dl_info(dli);
7718 +out:
7719 +       vxlprintk(VXD_CBIT(dlim, 1),
7720 +               "ALLOC (%p,#%d)%c %lld bytes (%d)",
7721 +               sb, tag, __dlimit_char(dli), (long long)nr,
7722 +               ret, file, line);
7723 +       return ret ? -ENOSPC : 0;
7724 +}
7725 +
7726 +static inline void __dl_free_space(struct super_block *sb,
7727 +       vtag_t tag, dlsize_t nr, const char *_file, int _line)
7728 +{
7729 +       struct dl_info *dli = NULL;
7730 +
7731 +       if (nr == 0)
7732 +               goto out;
7733 +       dli = locate_dl_info(sb, tag);
7734 +       if (!dli)
7735 +               goto out;
7736 +
7737 +       spin_lock(&dli->dl_lock);
7738 +       if (dli->dl_space_used > nr)
7739 +               dli->dl_space_used -= nr;
7740 +       else
7741 +               dli->dl_space_used = 0;
7742 +       spin_unlock(&dli->dl_lock);
7743 +       put_dl_info(dli);
7744 +out:
7745 +       vxlprintk(VXD_CBIT(dlim, 1),
7746 +               "FREE  (%p,#%d)%c %lld bytes",
7747 +               sb, tag, __dlimit_char(dli), (long long)nr,
7748 +               _file, _line);
7749 +}
7750 +
7751 +static inline int __dl_alloc_inode(struct super_block *sb,
7752 +       vtag_t tag, const char *_file, int _line)
7753 +{
7754 +       struct dl_info *dli;
7755 +       int ret = 0;
7756 +
7757 +       dli = locate_dl_info(sb, tag);
7758 +       if (!dli)
7759 +               goto out;
7760 +
7761 +       spin_lock(&dli->dl_lock);
7762 +       dli->dl_inodes_used++;
7763 +       ret = (dli->dl_inodes_used > dli->dl_inodes_total);
7764 +       spin_unlock(&dli->dl_lock);
7765 +       put_dl_info(dli);
7766 +out:
7767 +       vxlprintk(VXD_CBIT(dlim, 0),
7768 +               "ALLOC (%p,#%d)%c inode (%d)",
7769 +               sb, tag, __dlimit_char(dli), ret, _file, _line);
7770 +       return ret ? -ENOSPC : 0;
7771 +}
7772 +
7773 +static inline void __dl_free_inode(struct super_block *sb,
7774 +       vtag_t tag, const char *_file, int _line)
7775 +{
7776 +       struct dl_info *dli;
7777 +
7778 +       dli = locate_dl_info(sb, tag);
7779 +       if (!dli)
7780 +               goto out;
7781 +
7782 +       spin_lock(&dli->dl_lock);
7783 +       if (dli->dl_inodes_used > 1)
7784 +               dli->dl_inodes_used--;
7785 +       else
7786 +               dli->dl_inodes_used = 0;
7787 +       spin_unlock(&dli->dl_lock);
7788 +       put_dl_info(dli);
7789 +out:
7790 +       vxlprintk(VXD_CBIT(dlim, 0),
7791 +               "FREE  (%p,#%d)%c inode",
7792 +               sb, tag, __dlimit_char(dli), _file, _line);
7793 +}
7794 +
7795 +static inline void __dl_adjust_block(struct super_block *sb, vtag_t tag,
7796 +       unsigned long long *free_blocks, unsigned long long *root_blocks,
7797 +       const char *_file, int _line)
7798 +{
7799 +       struct dl_info *dli;
7800 +       uint64_t broot, bfree;
7801 +
7802 +       dli = locate_dl_info(sb, tag);
7803 +       if (!dli)
7804 +               return;
7805 +
7806 +       spin_lock(&dli->dl_lock);
7807 +       broot = (dli->dl_space_total -
7808 +               (dli->dl_space_total >> 10) * dli->dl_nrlmult)
7809 +               >> sb->s_blocksize_bits;
7810 +       bfree = (dli->dl_space_total - dli->dl_space_used)
7811 +                       >> sb->s_blocksize_bits;
7812 +       spin_unlock(&dli->dl_lock);
7813 +
7814 +       vxlprintk(VXD_CBIT(dlim, 2),
7815 +               "ADJUST: %lld,%lld on %lld,%lld [mult=%d]",
7816 +               (long long)bfree, (long long)broot,
7817 +               *free_blocks, *root_blocks, dli->dl_nrlmult,
7818 +               _file, _line);
7819 +       if (free_blocks) {
7820 +               if (*free_blocks > bfree)
7821 +                       *free_blocks = bfree;
7822 +       }
7823 +       if (root_blocks) {
7824 +               if (*root_blocks > broot)
7825 +                       *root_blocks = broot;
7826 +       }
7827 +       put_dl_info(dli);
7828 +}
7829 +
7830 +#define dl_prealloc_space(in, bytes) \
7831 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7832 +               __FILE__, __LINE__ )
7833 +
7834 +#define dl_alloc_space(in, bytes) \
7835 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7836 +               __FILE__, __LINE__ )
7837 +
7838 +#define dl_reserve_space(in, bytes) \
7839 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7840 +               __FILE__, __LINE__ )
7841 +
7842 +#define dl_claim_space(in, bytes) (0)
7843 +
7844 +#define dl_release_space(in, bytes) \
7845 +       __dl_free_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7846 +               __FILE__, __LINE__ )
7847 +
7848 +#define dl_free_space(in, bytes) \
7849 +       __dl_free_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7850 +               __FILE__, __LINE__ )
7851 +
7852 +
7853 +
7854 +#define dl_alloc_inode(in) \
7855 +       __dl_alloc_inode((in)->i_sb, i_tag_read(in), __FILE__, __LINE__ )
7856 +
7857 +#define dl_free_inode(in) \
7858 +       __dl_free_inode((in)->i_sb, i_tag_read(in), __FILE__, __LINE__ )
7859 +
7860 +
7861 +#define dl_adjust_block(sb, tag, fb, rb) \
7862 +       __dl_adjust_block(sb, tag, fb, rb, __FILE__, __LINE__ )
7863 +
7864 +
7865 +#else
7866 +#warning duplicate inclusion
7867 +#endif
7868 diff -NurpP --minimal linux-4.9.76/include/linux/vs_inet.h linux-4.9.76-vs2.3.9.5/include/linux/vs_inet.h
7869 --- linux-4.9.76/include/linux/vs_inet.h        1970-01-01 00:00:00.000000000 +0000
7870 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_inet.h      2018-01-10 02:50:49.000000000 +0000
7871 @@ -0,0 +1,364 @@
7872 +#ifndef _VS_INET_H
7873 +#define _VS_INET_H
7874 +
7875 +#include "vserver/base.h"
7876 +#include "vserver/network.h"
7877 +#include "vserver/debug.h"
7878 +
7879 +#define IPI_LOOPBACK   htonl(INADDR_LOOPBACK)
7880 +
7881 +#define NXAV4(a)       NIPQUAD((a)->ip[0]), NIPQUAD((a)->ip[1]), \
7882 +                       NIPQUAD((a)->mask), (a)->type
7883 +#define NXAV4_FMT      "[" NIPQUAD_FMT "-" NIPQUAD_FMT "/" NIPQUAD_FMT ":%04x]"
7884 +
7885 +#define NIPQUAD(addr) \
7886 +       ((unsigned char *)&addr)[0], \
7887 +       ((unsigned char *)&addr)[1], \
7888 +       ((unsigned char *)&addr)[2], \
7889 +       ((unsigned char *)&addr)[3]
7890 +
7891 +#define NIPQUAD_FMT "%u.%u.%u.%u"
7892 +
7893 +
7894 +static inline
7895 +int v4_addr_match(struct nx_addr_v4 *nxa, __be32 addr, uint16_t tmask)
7896 +{
7897 +       __be32 ip = nxa->ip[0].s_addr;
7898 +       __be32 mask = nxa->mask.s_addr;
7899 +       __be32 bcast = ip | ~mask;
7900 +       int ret = 0;
7901 +
7902 +       switch (nxa->type & tmask) {
7903 +       case NXA_TYPE_MASK:
7904 +               ret = (ip == (addr & mask));
7905 +               break;
7906 +       case NXA_TYPE_ADDR:
7907 +               ret = 3;
7908 +               if (addr == ip)
7909 +                       break;
7910 +               /* fall through to broadcast */
7911 +       case NXA_MOD_BCAST:
7912 +               ret = ((tmask & NXA_MOD_BCAST) && (addr == bcast));
7913 +               break;
7914 +       case NXA_TYPE_RANGE:
7915 +               ret = ((nxa->ip[0].s_addr <= addr) &&
7916 +                       (nxa->ip[1].s_addr > addr));
7917 +               break;
7918 +       case NXA_TYPE_ANY:
7919 +               ret = 2;
7920 +               break;
7921 +       }
7922 +
7923 +       vxdprintk(VXD_CBIT(net, 0),
7924 +               "v4_addr_match(%p" NXAV4_FMT "," NIPQUAD_FMT ",%04x) = %d",
7925 +               nxa, NXAV4(nxa), NIPQUAD(addr), tmask, ret);
7926 +       return ret;
7927 +}
7928 +
7929 +static inline
7930 +int v4_addr_in_nx_info(struct nx_info *nxi, __be32 addr, uint16_t tmask)
7931 +{
7932 +       struct nx_addr_v4 *nxa;
7933 +       unsigned long irqflags;
7934 +       int ret = 1;
7935 +
7936 +       if (!nxi)
7937 +               goto out;
7938 +
7939 +       ret = 2;
7940 +       /* allow 127.0.0.1 when remapping lback */
7941 +       if ((tmask & NXA_LOOPBACK) &&
7942 +               (addr == IPI_LOOPBACK) &&
7943 +               nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
7944 +               goto out;
7945 +       ret = 3;
7946 +       /* check for lback address */
7947 +       if ((tmask & NXA_MOD_LBACK) &&
7948 +               (nxi->v4_lback.s_addr == addr))
7949 +               goto out;
7950 +       ret = 4;
7951 +       /* check for broadcast address */
7952 +       if ((tmask & NXA_MOD_BCAST) &&
7953 +               (nxi->v4_bcast.s_addr == addr))
7954 +               goto out;
7955 +       ret = 5;
7956 +
7957 +       /* check for v4 addresses */
7958 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
7959 +       for (nxa = &nxi->v4; nxa; nxa = nxa->next)
7960 +               if (v4_addr_match(nxa, addr, tmask))
7961 +                       goto out_unlock;
7962 +       ret = 0;
7963 +out_unlock:
7964 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
7965 +out:
7966 +       vxdprintk(VXD_CBIT(net, 0),
7967 +               "v4_addr_in_nx_info(%p[#%u]," NIPQUAD_FMT ",%04x) = %d",
7968 +               nxi, nxi ? nxi->nx_id : 0, NIPQUAD(addr), tmask, ret);
7969 +       return ret;
7970 +}
7971 +
7972 +static inline
7973 +int v4_nx_addr_match(struct nx_addr_v4 *nxa, struct nx_addr_v4 *addr, uint16_t mask)
7974 +{
7975 +       /* FIXME: needs full range checks */
7976 +       return v4_addr_match(nxa, addr->ip[0].s_addr, mask);
7977 +}
7978 +
7979 +static inline
7980 +int v4_nx_addr_in_nx_info(struct nx_info *nxi, struct nx_addr_v4 *nxa, uint16_t mask)
7981 +{
7982 +       struct nx_addr_v4 *ptr;
7983 +       unsigned long irqflags;
7984 +       int ret = 1;
7985 +
7986 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
7987 +       for (ptr = &nxi->v4; ptr; ptr = ptr->next)
7988 +               if (v4_nx_addr_match(ptr, nxa, mask))
7989 +                       goto out_unlock;
7990 +       ret = 0;
7991 +out_unlock:
7992 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
7993 +       return ret;
7994 +}
7995 +
7996 +#include <net/inet_sock.h>
7997 +
7998 +/*
7999 + *     Check if a given address matches for a socket
8000 + *
8001 + *     nxi:            the socket's nx_info if any
8002 + *     addr:           to be verified address
8003 + */
8004 +static inline
8005 +int v4_sock_addr_match (
8006 +       struct nx_info *nxi,
8007 +       struct inet_sock *inet,
8008 +       __be32 addr)
8009 +{
8010 +       __be32 saddr = inet->inet_rcv_saddr;
8011 +       __be32 bcast = nxi ? nxi->v4_bcast.s_addr : INADDR_BROADCAST;
8012 +
8013 +       if (addr && (saddr == addr || bcast == addr))
8014 +               return 1;
8015 +       if (!saddr)
8016 +               return v4_addr_in_nx_info(nxi, addr, NXA_MASK_BIND);
8017 +       return 0;
8018 +}
8019 +
8020 +
8021 +/* inet related checks and helpers */
8022 +
8023 +
8024 +struct in_ifaddr;
8025 +struct net_device;
8026 +struct sock;
8027 +
8028 +#ifdef CONFIG_INET
8029 +
8030 +#include <linux/netdevice.h>
8031 +#include <linux/inetdevice.h>
8032 +#include <net/inet_sock.h>
8033 +#include <net/inet_timewait_sock.h>
8034 +
8035 +
8036 +int dev_in_nx_info(struct net_device *, struct nx_info *);
8037 +int v4_dev_in_nx_info(struct net_device *, struct nx_info *);
8038 +int nx_v4_addr_conflict(struct nx_info *, struct nx_info *);
8039 +
8040 +
8041 +/*
8042 + *     check if address is covered by socket
8043 + *
8044 + *     sk:     the socket to check against
8045 + *     addr:   the address in question (must be != 0)
8046 + */
8047 +
8048 +static inline
8049 +int __v4_addr_match_socket(const struct sock *sk, struct nx_addr_v4 *nxa)
8050 +{
8051 +       struct nx_info *nxi = sk->sk_nx_info;
8052 +       __be32 saddr = sk->sk_rcv_saddr;
8053 +
8054 +       vxdprintk(VXD_CBIT(net, 5),
8055 +               "__v4_addr_in_socket(%p," NXAV4_FMT ") %p:" NIPQUAD_FMT " %p;%lx",
8056 +               sk, NXAV4(nxa), nxi, NIPQUAD(saddr), sk->sk_socket,
8057 +               (sk->sk_socket?sk->sk_socket->flags:0));
8058 +
8059 +       if (saddr) {            /* direct address match */
8060 +               return v4_addr_match(nxa, saddr, -1);
8061 +       } else if (nxi) {       /* match against nx_info */
8062 +               return v4_nx_addr_in_nx_info(nxi, nxa, -1);
8063 +       } else {                /* unrestricted any socket */
8064 +               return 1;
8065 +       }
8066 +}
8067 +
8068 +
8069 +
8070 +static inline
8071 +int nx_dev_visible(struct nx_info *nxi, struct net_device *dev)
8072 +{
8073 +       vxdprintk(VXD_CBIT(net, 1),
8074 +               "nx_dev_visible(%p[#%u],%p " VS_Q("%s") ") %d",
8075 +               nxi, nxi ? nxi->nx_id : 0, dev, dev->name,
8076 +               nxi ? dev_in_nx_info(dev, nxi) : 0);
8077 +
8078 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8079 +               return 1;
8080 +       if (dev_in_nx_info(dev, nxi))
8081 +               return 1;
8082 +       return 0;
8083 +}
8084 +
8085 +
8086 +static inline
8087 +int v4_ifa_in_nx_info(struct in_ifaddr *ifa, struct nx_info *nxi)
8088 +{
8089 +       if (!nxi)
8090 +               return 1;
8091 +       if (!ifa)
8092 +               return 0;
8093 +       return v4_addr_in_nx_info(nxi, ifa->ifa_local, NXA_MASK_SHOW);
8094 +}
8095 +
8096 +static inline
8097 +int nx_v4_ifa_visible(struct nx_info *nxi, struct in_ifaddr *ifa)
8098 +{
8099 +       vxdprintk(VXD_CBIT(net, 1), "nx_v4_ifa_visible(%p[#%u],%p) %d",
8100 +               nxi, nxi ? nxi->nx_id : 0, ifa,
8101 +               nxi ? v4_ifa_in_nx_info(ifa, nxi) : 0);
8102 +
8103 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8104 +               return 1;
8105 +       if (v4_ifa_in_nx_info(ifa, nxi))
8106 +               return 1;
8107 +       return 0;
8108 +}
8109 +
8110 +
8111 +struct nx_v4_sock_addr {
8112 +       __be32 saddr;   /* Address used for validation */
8113 +       __be32 baddr;   /* Address used for socket bind */
8114 +};
8115 +
8116 +static inline
8117 +int v4_map_sock_addr(struct inet_sock *inet, struct sockaddr_in *addr,
8118 +       struct nx_v4_sock_addr *nsa)
8119 +{
8120 +       struct sock *sk = &inet->sk;
8121 +       struct nx_info *nxi = sk->sk_nx_info;
8122 +       __be32 saddr = addr->sin_addr.s_addr;
8123 +       __be32 baddr = saddr;
8124 +
8125 +       vxdprintk(VXD_CBIT(net, 3),
8126 +               "inet_bind(%p)* %p,%p;%lx " NIPQUAD_FMT,
8127 +               sk, sk->sk_nx_info, sk->sk_socket,
8128 +               (sk->sk_socket ? sk->sk_socket->flags : 0),
8129 +               NIPQUAD(saddr));
8130 +
8131 +       if (nxi) {
8132 +               if (saddr == INADDR_ANY) {
8133 +                       if (nx_info_flags(nxi, NXF_SINGLE_IP, 0))
8134 +                               baddr = nxi->v4.ip[0].s_addr;
8135 +               } else if (saddr == IPI_LOOPBACK) {
8136 +                       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
8137 +                               baddr = nxi->v4_lback.s_addr;
8138 +               } else if (!ipv4_is_multicast(saddr) ||
8139 +                       !nx_info_ncaps(nxi, NXC_MULTICAST)) {
8140 +                       /* normal address bind */
8141 +                       if (!v4_addr_in_nx_info(nxi, saddr, NXA_MASK_BIND))
8142 +                               return -EADDRNOTAVAIL;
8143 +               }
8144 +       }
8145 +
8146 +       vxdprintk(VXD_CBIT(net, 3),
8147 +               "inet_bind(%p) " NIPQUAD_FMT ", " NIPQUAD_FMT,
8148 +               sk, NIPQUAD(saddr), NIPQUAD(baddr));
8149 +
8150 +       nsa->saddr = saddr;
8151 +       nsa->baddr = baddr;
8152 +       return 0;
8153 +}
8154 +
8155 +static inline
8156 +void v4_set_sock_addr(struct inet_sock *inet, struct nx_v4_sock_addr *nsa)
8157 +{
8158 +       inet->inet_saddr = nsa->baddr;
8159 +       inet->inet_rcv_saddr = nsa->baddr;
8160 +}
8161 +
8162 +
8163 +/*
8164 + *      helper to simplify inet_lookup_listener
8165 + *
8166 + *      nxi:   the socket's nx_info if any
8167 + *      addr:  to be verified address
8168 + *      saddr: socket address
8169 + */
8170 +static inline int v4_inet_addr_match (
8171 +       struct nx_info *nxi,
8172 +       __be32 addr,
8173 +       __be32 saddr)
8174 +{
8175 +       if (addr && (saddr == addr))
8176 +               return 1;
8177 +       if (!saddr)
8178 +               return nxi ? v4_addr_in_nx_info(nxi, addr, NXA_MASK_BIND) : 1;
8179 +       return 0;
8180 +}
8181 +
8182 +static inline __be32 nx_map_sock_lback(struct nx_info *nxi, __be32 addr)
8183 +{
8184 +       if (nx_info_flags(nxi, NXF_HIDE_LBACK, 0) &&
8185 +               (addr == nxi->v4_lback.s_addr))
8186 +               return IPI_LOOPBACK;
8187 +       return addr;
8188 +}
8189 +
8190 +static inline
8191 +int nx_info_has_v4(struct nx_info *nxi)
8192 +{
8193 +       if (!nxi)
8194 +               return 1;
8195 +       if (NX_IPV4(nxi))
8196 +               return 1;
8197 +       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
8198 +               return 1;
8199 +       return 0;
8200 +}
8201 +
8202 +#else /* CONFIG_INET */
8203 +
8204 +static inline
8205 +int nx_dev_visible(struct nx_info *n, struct net_device *d)
8206 +{
8207 +       return 1;
8208 +}
8209 +
8210 +static inline
8211 +int nx_v4_addr_conflict(struct nx_info *n, uint32_t a, const struct sock *s)
8212 +{
8213 +       return 1;
8214 +}
8215 +
8216 +static inline
8217 +int v4_ifa_in_nx_info(struct in_ifaddr *a, struct nx_info *n)
8218 +{
8219 +       return 1;
8220 +}
8221 +
8222 +static inline
8223 +int nx_info_has_v4(struct nx_info *nxi)
8224 +{
8225 +       return 0;
8226 +}
8227 +
8228 +#endif /* CONFIG_INET */
8229 +
8230 +#define current_nx_info_has_v4() \
8231 +       nx_info_has_v4(current_nx_info())
8232 +
8233 +#else
8234 +// #warning duplicate inclusion
8235 +#endif
8236 diff -NurpP --minimal linux-4.9.76/include/linux/vs_inet6.h linux-4.9.76-vs2.3.9.5/include/linux/vs_inet6.h
8237 --- linux-4.9.76/include/linux/vs_inet6.h       1970-01-01 00:00:00.000000000 +0000
8238 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_inet6.h     2018-01-10 02:50:49.000000000 +0000
8239 @@ -0,0 +1,257 @@
8240 +#ifndef _VS_INET6_H
8241 +#define _VS_INET6_H
8242 +
8243 +#include "vserver/base.h"
8244 +#include "vserver/network.h"
8245 +#include "vserver/debug.h"
8246 +
8247 +#include <net/ipv6.h>
8248 +
8249 +#define NXAV6(a)       &(a)->ip, &(a)->mask, (a)->prefix, (a)->type
8250 +#define NXAV6_FMT      "[%pI6/%pI6/%d:%04x]"
8251 +
8252 +
8253 +#ifdef CONFIG_IPV6
8254 +
8255 +static inline
8256 +int v6_addr_match(struct nx_addr_v6 *nxa,
8257 +       const struct in6_addr *addr, uint16_t mask)
8258 +{
8259 +       int ret = 0;
8260 +
8261 +       switch (nxa->type & mask) {
8262 +       case NXA_TYPE_MASK:
8263 +               ret = ipv6_masked_addr_cmp(&nxa->ip, &nxa->mask, addr);
8264 +               break;
8265 +       case NXA_TYPE_ADDR:
8266 +               ret = ipv6_addr_equal(&nxa->ip, addr);
8267 +               break;
8268 +       case NXA_TYPE_ANY:
8269 +               ret = 1;
8270 +               break;
8271 +       }
8272 +       vxdprintk(VXD_CBIT(net, 0),
8273 +               "v6_addr_match(%p" NXAV6_FMT ",%pI6,%04x) = %d",
8274 +               nxa, NXAV6(nxa), addr, mask, ret);
8275 +       return ret;
8276 +}
8277 +
8278 +static inline
8279 +int v6_addr_in_nx_info(struct nx_info *nxi,
8280 +       const struct in6_addr *addr, uint16_t mask)
8281 +{
8282 +       struct nx_addr_v6 *nxa;
8283 +       unsigned long irqflags;
8284 +       int ret = 1;
8285 +
8286 +       if (!nxi)
8287 +               goto out;
8288 +
8289 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8290 +       for (nxa = &nxi->v6; nxa; nxa = nxa->next)
8291 +               if (v6_addr_match(nxa, addr, mask))
8292 +                       goto out_unlock;
8293 +       ret = 0;
8294 +out_unlock:
8295 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8296 +out:
8297 +       vxdprintk(VXD_CBIT(net, 0),
8298 +               "v6_addr_in_nx_info(%p[#%u],%pI6,%04x) = %d",
8299 +               nxi, nxi ? nxi->nx_id : 0, addr, mask, ret);
8300 +       return ret;
8301 +}
8302 +
8303 +static inline
8304 +int v6_nx_addr_match(struct nx_addr_v6 *nxa, struct nx_addr_v6 *addr, uint16_t mask)
8305 +{
8306 +       /* FIXME: needs full range checks */
8307 +       return v6_addr_match(nxa, &addr->ip, mask);
8308 +}
8309 +
8310 +static inline
8311 +int v6_nx_addr_in_nx_info(struct nx_info *nxi, struct nx_addr_v6 *nxa, uint16_t mask)
8312 +{
8313 +       struct nx_addr_v6 *ptr;
8314 +       unsigned long irqflags;
8315 +       int ret = 1;
8316 +
8317 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8318 +       for (ptr = &nxi->v6; ptr; ptr = ptr->next)
8319 +               if (v6_nx_addr_match(ptr, nxa, mask))
8320 +                       goto out_unlock;
8321 +       ret = 0;
8322 +out_unlock:
8323 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8324 +       return ret;
8325 +}
8326 +
8327 +
8328 +/*
8329 + *     Check if a given address matches for a socket
8330 + *
8331 + *     nxi:            the socket's nx_info if any
8332 + *     addr:           to be verified address
8333 + */
8334 +static inline
8335 +int v6_sock_addr_match (
8336 +       struct nx_info *nxi,
8337 +       struct inet_sock *inet,
8338 +       struct in6_addr *addr)
8339 +{
8340 +       struct sock *sk = &inet->sk;
8341 +       const struct in6_addr *saddr = inet6_rcv_saddr(sk);
8342 +
8343 +       if (!ipv6_addr_any(addr) &&
8344 +               ipv6_addr_equal(saddr, addr))
8345 +               return 1;
8346 +       if (ipv6_addr_any(saddr))
8347 +               return v6_addr_in_nx_info(nxi, addr, -1);
8348 +       return 0;
8349 +}
8350 +
8351 +/*
8352 + *     check if address is covered by socket
8353 + *
8354 + *     sk:     the socket to check against
8355 + *     addr:   the address in question (must be != 0)
8356 + */
8357 +
8358 +static inline
8359 +int __v6_addr_match_socket(const struct sock *sk, struct nx_addr_v6 *nxa)
8360 +{
8361 +       struct nx_info *nxi = sk->sk_nx_info;
8362 +       const struct in6_addr *saddr = inet6_rcv_saddr(sk);
8363 +
8364 +       vxdprintk(VXD_CBIT(net, 5),
8365 +               "__v6_addr_in_socket(%p," NXAV6_FMT ") %p:%pI6 %p;%lx",
8366 +               sk, NXAV6(nxa), nxi, saddr, sk->sk_socket,
8367 +               (sk->sk_socket?sk->sk_socket->flags:0));
8368 +
8369 +       if (!ipv6_addr_any(saddr)) {    /* direct address match */
8370 +               return v6_addr_match(nxa, saddr, -1);
8371 +       } else if (nxi) {               /* match against nx_info */
8372 +               return v6_nx_addr_in_nx_info(nxi, nxa, -1);
8373 +       } else {                        /* unrestricted any socket */
8374 +               return 1;
8375 +       }
8376 +}
8377 +
8378 +
8379 +/* inet related checks and helpers */
8380 +
8381 +
8382 +struct in_ifaddr;
8383 +struct net_device;
8384 +struct sock;
8385 +
8386 +
8387 +#include <linux/netdevice.h>
8388 +#include <linux/inetdevice.h>
8389 +#include <net/inet_timewait_sock.h>
8390 +
8391 +
8392 +int dev_in_nx_info(struct net_device *, struct nx_info *);
8393 +int v6_dev_in_nx_info(struct net_device *, struct nx_info *);
8394 +int nx_v6_addr_conflict(struct nx_info *, struct nx_info *);
8395 +
8396 +
8397 +
8398 +static inline
8399 +int v6_ifa_in_nx_info(struct inet6_ifaddr *ifa, struct nx_info *nxi)
8400 +{
8401 +       if (!nxi)
8402 +               return 1;
8403 +       if (!ifa)
8404 +               return 0;
8405 +       return v6_addr_in_nx_info(nxi, &ifa->addr, -1);
8406 +}
8407 +
8408 +static inline
8409 +int nx_v6_ifa_visible(struct nx_info *nxi, struct inet6_ifaddr *ifa)
8410 +{
8411 +       vxdprintk(VXD_CBIT(net, 1), "nx_v6_ifa_visible(%p[#%u],%p) %d",
8412 +               nxi, nxi ? nxi->nx_id : 0, ifa,
8413 +               nxi ? v6_ifa_in_nx_info(ifa, nxi) : 0);
8414 +
8415 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8416 +               return 1;
8417 +       if (v6_ifa_in_nx_info(ifa, nxi))
8418 +               return 1;
8419 +       return 0;
8420 +}
8421 +
8422 +
8423 +struct nx_v6_sock_addr {
8424 +       struct in6_addr saddr;  /* Address used for validation */
8425 +       struct in6_addr baddr;  /* Address used for socket bind */
8426 +};
8427 +
8428 +static inline
8429 +int v6_map_sock_addr(struct inet_sock *inet, struct sockaddr_in6 *addr,
8430 +       struct nx_v6_sock_addr *nsa)
8431 +{
8432 +       // struct sock *sk = &inet->sk;
8433 +       // struct nx_info *nxi = sk->sk_nx_info;
8434 +       struct in6_addr saddr = addr->sin6_addr;
8435 +       struct in6_addr baddr = saddr;
8436 +
8437 +       nsa->saddr = saddr;
8438 +       nsa->baddr = baddr;
8439 +       return 0;
8440 +}
8441 +
8442 +static inline
8443 +void v6_set_sock_addr(struct inet_sock *inet, struct nx_v6_sock_addr *nsa)
8444 +{
8445 +       // struct sock *sk = &inet->sk;
8446 +       // struct in6_addr *saddr = inet6_rcv_saddr(sk);
8447 +
8448 +       // *saddr = nsa->baddr;
8449 +       // inet->inet_saddr = nsa->baddr;
8450 +}
8451 +
8452 +static inline
8453 +int nx_info_has_v6(struct nx_info *nxi)
8454 +{
8455 +       if (!nxi)
8456 +               return 1;
8457 +       if (NX_IPV6(nxi))
8458 +               return 1;
8459 +       return 0;
8460 +}
8461 +
8462 +#else /* CONFIG_IPV6 */
8463 +
8464 +static inline
8465 +int nx_v6_dev_visible(struct nx_info *n, struct net_device *d)
8466 +{
8467 +       return 1;
8468 +}
8469 +
8470 +
8471 +static inline
8472 +int nx_v6_addr_conflict(struct nx_info *n, uint32_t a, const struct sock *s)
8473 +{
8474 +       return 1;
8475 +}
8476 +
8477 +static inline
8478 +int v6_ifa_in_nx_info(struct in_ifaddr *a, struct nx_info *n)
8479 +{
8480 +       return 1;
8481 +}
8482 +
8483 +static inline
8484 +int nx_info_has_v6(struct nx_info *nxi)
8485 +{
8486 +       return 0;
8487 +}
8488 +
8489 +#endif /* CONFIG_IPV6 */
8490 +
8491 +#define current_nx_info_has_v6() \
8492 +       nx_info_has_v6(current_nx_info())
8493 +
8494 +#else
8495 +#warning duplicate inclusion
8496 +#endif
8497 diff -NurpP --minimal linux-4.9.76/include/linux/vs_limit.h linux-4.9.76-vs2.3.9.5/include/linux/vs_limit.h
8498 --- linux-4.9.76/include/linux/vs_limit.h       1970-01-01 00:00:00.000000000 +0000
8499 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_limit.h     2018-01-10 02:50:49.000000000 +0000
8500 @@ -0,0 +1,140 @@
8501 +#ifndef _VS_LIMIT_H
8502 +#define _VS_LIMIT_H
8503 +
8504 +#include "vserver/limit.h"
8505 +#include "vserver/base.h"
8506 +#include "vserver/context.h"
8507 +#include "vserver/debug.h"
8508 +#include "vserver/context.h"
8509 +#include "vserver/limit_int.h"
8510 +
8511 +
8512 +#define vx_acc_cres(v, d, p, r) \
8513 +       __vx_acc_cres(v, r, d, p, __FILE__, __LINE__)
8514 +
8515 +#define vx_acc_cres_cond(x, d, p, r) \
8516 +       __vx_acc_cres(((x) == vx_current_xid()) ? current_vx_info() : 0, \
8517 +       r, d, p, __FILE__, __LINE__)
8518 +
8519 +
8520 +#define vx_add_cres(v, a, p, r) \
8521 +       __vx_add_cres(v, r, a, p, __FILE__, __LINE__)
8522 +#define vx_sub_cres(v, a, p, r)                vx_add_cres(v, -(a), p, r)
8523 +
8524 +#define vx_add_cres_cond(x, a, p, r) \
8525 +       __vx_add_cres(((x) == vx_current_xid()) ? current_vx_info() : 0, \
8526 +       r, a, p, __FILE__, __LINE__)
8527 +#define vx_sub_cres_cond(x, a, p, r)   vx_add_cres_cond(x, -(a), p, r)
8528 +
8529 +
8530 +/* process and file limits */
8531 +
8532 +#define vx_nproc_inc(p) \
8533 +       vx_acc_cres((p)->vx_info, 1, p, RLIMIT_NPROC)
8534 +
8535 +#define vx_nproc_dec(p) \
8536 +       vx_acc_cres((p)->vx_info,-1, p, RLIMIT_NPROC)
8537 +
8538 +#define vx_files_inc(f) \
8539 +       vx_acc_cres_cond((f)->f_xid, 1, f, RLIMIT_NOFILE)
8540 +
8541 +#define vx_files_dec(f) \
8542 +       vx_acc_cres_cond((f)->f_xid,-1, f, RLIMIT_NOFILE)
8543 +
8544 +#define vx_locks_inc(l) \
8545 +       vx_acc_cres_cond((l)->fl_xid, 1, l, RLIMIT_LOCKS)
8546 +
8547 +#define vx_locks_dec(l) \
8548 +       vx_acc_cres_cond((l)->fl_xid,-1, l, RLIMIT_LOCKS)
8549 +
8550 +#define vx_openfd_inc(f) \
8551 +       vx_acc_cres(current_vx_info(), 1, (void *)(long)(f), VLIMIT_OPENFD)
8552 +
8553 +#define vx_openfd_dec(f) \
8554 +       vx_acc_cres(current_vx_info(),-1, (void *)(long)(f), VLIMIT_OPENFD)
8555 +
8556 +
8557 +#define vx_cres_avail(v, n, r) \
8558 +       __vx_cres_avail(v, r, n, __FILE__, __LINE__)
8559 +
8560 +
8561 +#define vx_nproc_avail(n) \
8562 +       vx_cres_avail(current_vx_info(), n, RLIMIT_NPROC)
8563 +
8564 +#define vx_files_avail(n) \
8565 +       vx_cres_avail(current_vx_info(), n, RLIMIT_NOFILE)
8566 +
8567 +#define vx_locks_avail(n) \
8568 +       vx_cres_avail(current_vx_info(), n, RLIMIT_LOCKS)
8569 +
8570 +#define vx_openfd_avail(n) \
8571 +       vx_cres_avail(current_vx_info(), n, VLIMIT_OPENFD)
8572 +
8573 +
8574 +/* dentry limits */
8575 +
8576 +#define vx_dentry_inc(d) do {                                          \
8577 +       if (d_count(d) == 1)                                            \
8578 +               vx_acc_cres(current_vx_info(), 1, d, VLIMIT_DENTRY);    \
8579 +       } while (0)
8580 +
8581 +#define vx_dentry_dec(d) do {                                          \
8582 +       if (d_count(d) == 0)                                            \
8583 +               vx_acc_cres(current_vx_info(),-1, d, VLIMIT_DENTRY);    \
8584 +       } while (0)
8585 +
8586 +#define vx_dentry_avail(n) \
8587 +       vx_cres_avail(current_vx_info(), n, VLIMIT_DENTRY)
8588 +
8589 +
8590 +/* socket limits */
8591 +
8592 +#define vx_sock_inc(s) \
8593 +       vx_acc_cres((s)->sk_vx_info, 1, s, VLIMIT_NSOCK)
8594 +
8595 +#define vx_sock_dec(s) \
8596 +       vx_acc_cres((s)->sk_vx_info,-1, s, VLIMIT_NSOCK)
8597 +
8598 +#define vx_sock_avail(n) \
8599 +       vx_cres_avail(current_vx_info(), n, VLIMIT_NSOCK)
8600 +
8601 +
8602 +/* ipc resource limits */
8603 +
8604 +#define vx_ipcmsg_add(v, u, a) \
8605 +       vx_add_cres(v, a, u, RLIMIT_MSGQUEUE)
8606 +
8607 +#define vx_ipcmsg_sub(v, u, a) \
8608 +       vx_sub_cres(v, a, u, RLIMIT_MSGQUEUE)
8609 +
8610 +#define vx_ipcmsg_avail(v, a) \
8611 +       vx_cres_avail(v, a, RLIMIT_MSGQUEUE)
8612 +
8613 +
8614 +#define vx_ipcshm_add(v, k, a) \
8615 +       vx_add_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
8616 +
8617 +#define vx_ipcshm_sub(v, k, a) \
8618 +       vx_sub_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
8619 +
8620 +#define vx_ipcshm_avail(v, a) \
8621 +       vx_cres_avail(v, a, VLIMIT_SHMEM)
8622 +
8623 +
8624 +#define vx_semary_inc(a) \
8625 +       vx_acc_cres(current_vx_info(), 1, a, VLIMIT_SEMARY)
8626 +
8627 +#define vx_semary_dec(a) \
8628 +       vx_acc_cres(current_vx_info(), -1, a, VLIMIT_SEMARY)
8629 +
8630 +
8631 +#define vx_nsems_add(a,n) \
8632 +       vx_add_cres(current_vx_info(), n, a, VLIMIT_NSEMS)
8633 +
8634 +#define vx_nsems_sub(a,n) \
8635 +       vx_sub_cres(current_vx_info(), n, a, VLIMIT_NSEMS)
8636 +
8637 +
8638 +#else
8639 +#warning duplicate inclusion
8640 +#endif
8641 diff -NurpP --minimal linux-4.9.76/include/linux/vs_network.h linux-4.9.76-vs2.3.9.5/include/linux/vs_network.h
8642 --- linux-4.9.76/include/linux/vs_network.h     1970-01-01 00:00:00.000000000 +0000
8643 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_network.h   2018-01-10 02:50:49.000000000 +0000
8644 @@ -0,0 +1,169 @@
8645 +#ifndef _NX_VS_NETWORK_H
8646 +#define _NX_VS_NETWORK_H
8647 +
8648 +#include "vserver/context.h"
8649 +#include "vserver/network.h"
8650 +#include "vserver/base.h"
8651 +#include "vserver/check.h"
8652 +#include "vserver/debug.h"
8653 +
8654 +#include <linux/sched.h>
8655 +
8656 +
8657 +#define get_nx_info(i) __get_nx_info(i, __FILE__, __LINE__)
8658 +
8659 +static inline struct nx_info *__get_nx_info(struct nx_info *nxi,
8660 +       const char *_file, int _line)
8661 +{
8662 +       if (!nxi)
8663 +               return NULL;
8664 +
8665 +       vxlprintk(VXD_CBIT(nid, 2), "get_nx_info(%p[#%d.%d])",
8666 +               nxi, nxi ? nxi->nx_id : 0,
8667 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8668 +               _file, _line);
8669 +
8670 +       atomic_inc(&nxi->nx_usecnt);
8671 +       return nxi;
8672 +}
8673 +
8674 +
8675 +extern void free_nx_info(struct nx_info *);
8676 +
8677 +#define put_nx_info(i) __put_nx_info(i, __FILE__, __LINE__)
8678 +
8679 +static inline void __put_nx_info(struct nx_info *nxi, const char *_file, int _line)
8680 +{
8681 +       if (!nxi)
8682 +               return;
8683 +
8684 +       vxlprintk(VXD_CBIT(nid, 2), "put_nx_info(%p[#%d.%d])",
8685 +               nxi, nxi ? nxi->nx_id : 0,
8686 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8687 +               _file, _line);
8688 +
8689 +       if (atomic_dec_and_test(&nxi->nx_usecnt))
8690 +               free_nx_info(nxi);
8691 +}
8692 +
8693 +
8694 +#define init_nx_info(p, i) __init_nx_info(p, i, __FILE__, __LINE__)
8695 +
8696 +static inline void __init_nx_info(struct nx_info **nxp, struct nx_info *nxi,
8697 +               const char *_file, int _line)
8698 +{
8699 +       if (nxi) {
8700 +               vxlprintk(VXD_CBIT(nid, 3),
8701 +                       "init_nx_info(%p[#%d.%d])",
8702 +                       nxi, nxi ? nxi->nx_id : 0,
8703 +                       nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8704 +                       _file, _line);
8705 +
8706 +               atomic_inc(&nxi->nx_usecnt);
8707 +       }
8708 +       *nxp = nxi;
8709 +}
8710 +
8711 +
8712 +#define set_nx_info(p, i) __set_nx_info(p, i, __FILE__, __LINE__)
8713 +
8714 +static inline void __set_nx_info(struct nx_info **nxp, struct nx_info *nxi,
8715 +       const char *_file, int _line)
8716 +{
8717 +       struct nx_info *nxo;
8718 +
8719 +       if (!nxi)
8720 +               return;
8721 +
8722 +       vxlprintk(VXD_CBIT(nid, 3), "set_nx_info(%p[#%d.%d])",
8723 +               nxi, nxi ? nxi->nx_id : 0,
8724 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8725 +               _file, _line);
8726 +
8727 +       atomic_inc(&nxi->nx_usecnt);
8728 +       nxo = xchg(nxp, nxi);
8729 +       BUG_ON(nxo);
8730 +}
8731 +
8732 +#define clr_nx_info(p) __clr_nx_info(p, __FILE__, __LINE__)
8733 +
8734 +static inline void __clr_nx_info(struct nx_info **nxp,
8735 +       const char *_file, int _line)
8736 +{
8737 +       struct nx_info *nxo;
8738 +
8739 +       nxo = xchg(nxp, NULL);
8740 +       if (!nxo)
8741 +               return;
8742 +
8743 +       vxlprintk(VXD_CBIT(nid, 3), "clr_nx_info(%p[#%d.%d])",
8744 +               nxo, nxo ? nxo->nx_id : 0,
8745 +               nxo ? atomic_read(&nxo->nx_usecnt) : 0,
8746 +               _file, _line);
8747 +
8748 +       if (atomic_dec_and_test(&nxo->nx_usecnt))
8749 +               free_nx_info(nxo);
8750 +}
8751 +
8752 +
8753 +#define claim_nx_info(v, p) __claim_nx_info(v, p, __FILE__, __LINE__)
8754 +
8755 +static inline void __claim_nx_info(struct nx_info *nxi,
8756 +       struct task_struct *task, const char *_file, int _line)
8757 +{
8758 +       vxlprintk(VXD_CBIT(nid, 3), "claim_nx_info(%p[#%d.%d.%d]) %p",
8759 +               nxi, nxi ? nxi->nx_id : 0,
8760 +               nxi?atomic_read(&nxi->nx_usecnt):0,
8761 +               nxi?atomic_read(&nxi->nx_tasks):0,
8762 +               task, _file, _line);
8763 +
8764 +       atomic_inc(&nxi->nx_tasks);
8765 +}
8766 +
8767 +
8768 +extern void unhash_nx_info(struct nx_info *);
8769 +
8770 +#define release_nx_info(v, p) __release_nx_info(v, p, __FILE__, __LINE__)
8771 +
8772 +static inline void __release_nx_info(struct nx_info *nxi,
8773 +       struct task_struct *task, const char *_file, int _line)
8774 +{
8775 +       vxlprintk(VXD_CBIT(nid, 3), "release_nx_info(%p[#%d.%d.%d]) %p",
8776 +               nxi, nxi ? nxi->nx_id : 0,
8777 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8778 +               nxi ? atomic_read(&nxi->nx_tasks) : 0,
8779 +               task, _file, _line);
8780 +
8781 +       might_sleep();
8782 +
8783 +       if (atomic_dec_and_test(&nxi->nx_tasks))
8784 +               unhash_nx_info(nxi);
8785 +}
8786 +
8787 +
8788 +#define task_get_nx_info(i)    __task_get_nx_info(i, __FILE__, __LINE__)
8789 +
8790 +static __inline__ struct nx_info *__task_get_nx_info(struct task_struct *p,
8791 +       const char *_file, int _line)
8792 +{
8793 +       struct nx_info *nxi;
8794 +
8795 +       task_lock(p);
8796 +       vxlprintk(VXD_CBIT(nid, 5), "task_get_nx_info(%p)",
8797 +               p, _file, _line);
8798 +       nxi = __get_nx_info(p->nx_info, _file, _line);
8799 +       task_unlock(p);
8800 +       return nxi;
8801 +}
8802 +
8803 +
8804 +static inline void exit_nx_info(struct task_struct *p)
8805 +{
8806 +       if (p->nx_info)
8807 +               release_nx_info(p->nx_info, p);
8808 +}
8809 +
8810 +
8811 +#else
8812 +#warning duplicate inclusion
8813 +#endif
8814 diff -NurpP --minimal linux-4.9.76/include/linux/vs_pid.h linux-4.9.76-vs2.3.9.5/include/linux/vs_pid.h
8815 --- linux-4.9.76/include/linux/vs_pid.h 1970-01-01 00:00:00.000000000 +0000
8816 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_pid.h       2018-01-10 02:50:49.000000000 +0000
8817 @@ -0,0 +1,50 @@
8818 +#ifndef _VS_PID_H
8819 +#define _VS_PID_H
8820 +
8821 +#include "vserver/base.h"
8822 +#include "vserver/check.h"
8823 +#include "vserver/context.h"
8824 +#include "vserver/debug.h"
8825 +#include "vserver/pid.h"
8826 +#include <linux/pid_namespace.h>
8827 +
8828 +
8829 +#define VXF_FAKE_INIT  (VXF_INFO_INIT | VXF_STATE_INIT)
8830 +
8831 +static inline
8832 +int vx_proc_task_visible(struct task_struct *task)
8833 +{
8834 +       if ((task->pid == 1) &&
8835 +               !vx_flags(VXF_FAKE_INIT, VXF_FAKE_INIT))
8836 +               /* show a blend through init */
8837 +               goto visible;
8838 +       if (vx_check(vx_task_xid(task), VS_WATCH | VS_IDENT))
8839 +               goto visible;
8840 +       return 0;
8841 +visible:
8842 +       return 1;
8843 +}
8844 +
8845 +#define find_task_by_real_pid(pid) find_task_by_pid_ns(pid, &init_pid_ns)
8846 +
8847 +
8848 +static inline
8849 +struct task_struct *vx_get_proc_task(struct inode *inode, struct pid *pid)
8850 +{
8851 +       struct task_struct *task = get_pid_task(pid, PIDTYPE_PID);
8852 +
8853 +       if (task && !vx_proc_task_visible(task)) {
8854 +               vxdprintk(VXD_CBIT(misc, 6),
8855 +                       "dropping task (get) %p[#%u,%u] for %p[#%u,%u]",
8856 +                       task, task->xid, task->pid,
8857 +                       current, current->xid, current->pid);
8858 +               put_task_struct(task);
8859 +               task = NULL;
8860 +       }
8861 +       return task;
8862 +}
8863 +
8864 +
8865 +#else
8866 +#warning duplicate inclusion
8867 +#endif
8868 diff -NurpP --minimal linux-4.9.76/include/linux/vs_sched.h linux-4.9.76-vs2.3.9.5/include/linux/vs_sched.h
8869 --- linux-4.9.76/include/linux/vs_sched.h       1970-01-01 00:00:00.000000000 +0000
8870 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_sched.h     2018-01-10 02:50:49.000000000 +0000
8871 @@ -0,0 +1,40 @@
8872 +#ifndef _VS_SCHED_H
8873 +#define _VS_SCHED_H
8874 +
8875 +#include "vserver/base.h"
8876 +#include "vserver/context.h"
8877 +#include "vserver/sched.h"
8878 +
8879 +
8880 +#define MAX_PRIO_BIAS           20
8881 +#define MIN_PRIO_BIAS          -20
8882 +
8883 +static inline
8884 +int vx_adjust_prio(struct task_struct *p, int prio, int max_user)
8885 +{
8886 +       struct vx_info *vxi = p->vx_info;
8887 +
8888 +       if (vxi)
8889 +               prio += vx_cpu(vxi, sched_pc).prio_bias;
8890 +       return prio;
8891 +}
8892 +
8893 +static inline void vx_account_user(struct vx_info *vxi,
8894 +       cputime_t cputime, int nice)
8895 +{
8896 +       if (!vxi)
8897 +               return;
8898 +       vx_cpu(vxi, sched_pc).user_ticks += cputime;
8899 +}
8900 +
8901 +static inline void vx_account_system(struct vx_info *vxi,
8902 +       cputime_t cputime, int idle)
8903 +{
8904 +       if (!vxi)
8905 +               return;
8906 +       vx_cpu(vxi, sched_pc).sys_ticks += cputime;
8907 +}
8908 +
8909 +#else
8910 +#warning duplicate inclusion
8911 +#endif
8912 diff -NurpP --minimal linux-4.9.76/include/linux/vs_socket.h linux-4.9.76-vs2.3.9.5/include/linux/vs_socket.h
8913 --- linux-4.9.76/include/linux/vs_socket.h      1970-01-01 00:00:00.000000000 +0000
8914 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_socket.h    2018-01-10 02:50:49.000000000 +0000
8915 @@ -0,0 +1,67 @@
8916 +#ifndef _VS_SOCKET_H
8917 +#define _VS_SOCKET_H
8918 +
8919 +#include "vserver/debug.h"
8920 +#include "vserver/base.h"
8921 +#include "vserver/cacct.h"
8922 +#include "vserver/context.h"
8923 +#include "vserver/tag.h"
8924 +
8925 +
8926 +/* socket accounting */
8927 +
8928 +#include <linux/socket.h>
8929 +
8930 +static inline int vx_sock_type(int family)
8931 +{
8932 +       switch (family) {
8933 +       case PF_UNSPEC:
8934 +               return VXA_SOCK_UNSPEC;
8935 +       case PF_UNIX:
8936 +               return VXA_SOCK_UNIX;
8937 +       case PF_INET:
8938 +               return VXA_SOCK_INET;
8939 +       case PF_INET6:
8940 +               return VXA_SOCK_INET6;
8941 +       case PF_PACKET:
8942 +               return VXA_SOCK_PACKET;
8943 +       default:
8944 +               return VXA_SOCK_OTHER;
8945 +       }
8946 +}
8947 +
8948 +#define vx_acc_sock(v, f, p, s) \
8949 +       __vx_acc_sock(v, f, p, s, __FILE__, __LINE__)
8950 +
8951 +static inline void __vx_acc_sock(struct vx_info *vxi,
8952 +       int family, int pos, int size, char *file, int line)
8953 +{
8954 +       if (vxi) {
8955 +               int type = vx_sock_type(family);
8956 +
8957 +               atomic_long_inc(&vxi->cacct.sock[type][pos].count);
8958 +               atomic_long_add(size, &vxi->cacct.sock[type][pos].total);
8959 +       }
8960 +}
8961 +
8962 +#define vx_sock_recv(sk, s) \
8963 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 0, s)
8964 +#define vx_sock_send(sk, s) \
8965 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 1, s)
8966 +#define vx_sock_fail(sk, s) \
8967 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 2, s)
8968 +
8969 +
8970 +#define sock_vx_init(s) do {           \
8971 +       (s)->sk_xid = 0;                \
8972 +       (s)->sk_vx_info = NULL;         \
8973 +       } while (0)
8974 +
8975 +#define sock_nx_init(s) do {           \
8976 +       (s)->sk_nid = 0;                \
8977 +       (s)->sk_nx_info = NULL;         \
8978 +       } while (0)
8979 +
8980 +#else
8981 +#warning duplicate inclusion
8982 +#endif
8983 diff -NurpP --minimal linux-4.9.76/include/linux/vs_tag.h linux-4.9.76-vs2.3.9.5/include/linux/vs_tag.h
8984 --- linux-4.9.76/include/linux/vs_tag.h 1970-01-01 00:00:00.000000000 +0000
8985 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_tag.h       2018-01-10 02:50:49.000000000 +0000
8986 @@ -0,0 +1,47 @@
8987 +#ifndef _VS_TAG_H
8988 +#define _VS_TAG_H
8989 +
8990 +#include <linux/vserver/tag.h>
8991 +
8992 +/* check conditions */
8993 +
8994 +#define DX_ADMIN       0x0001
8995 +#define DX_WATCH       0x0002
8996 +#define DX_HOSTID      0x0008
8997 +
8998 +#define DX_IDENT       0x0010
8999 +
9000 +#define DX_ARG_MASK    0x0010
9001 +
9002 +
9003 +#define dx_task_tag(t) ((t)->tag)
9004 +
9005 +#define dx_current_tag() dx_task_tag(current)
9006 +
9007 +#define dx_check(c, m) __dx_check(dx_current_tag(), c, m)
9008 +
9009 +#define dx_weak_check(c, m)    ((m) ? dx_check(c, m) : 1)
9010 +
9011 +
9012 +/*
9013 + * check current context for ADMIN/WATCH and
9014 + * optionally against supplied argument
9015 + */
9016 +static inline int __dx_check(vtag_t cid, vtag_t id, unsigned int mode)
9017 +{
9018 +       if (mode & DX_ARG_MASK) {
9019 +               if ((mode & DX_IDENT) && (id == cid))
9020 +                       return 1;
9021 +       }
9022 +       return (((mode & DX_ADMIN) && (cid == 0)) ||
9023 +               ((mode & DX_WATCH) && (cid == 1)) ||
9024 +               ((mode & DX_HOSTID) && (id == 0)));
9025 +}
9026 +
9027 +struct inode;
9028 +int dx_permission(const struct inode *inode, int mask);
9029 +
9030 +
9031 +#else
9032 +#warning duplicate inclusion
9033 +#endif
9034 diff -NurpP --minimal linux-4.9.76/include/linux/vs_time.h linux-4.9.76-vs2.3.9.5/include/linux/vs_time.h
9035 --- linux-4.9.76/include/linux/vs_time.h        1970-01-01 00:00:00.000000000 +0000
9036 +++ linux-4.9.76-vs2.3.9.5/include/linux/vs_time.h      2018-01-10 09:27:12.000000000 +0000
9037 @@ -0,0 +1,21 @@
9038 +#ifndef _VS_TIME_H
9039 +#define _VS_TIME_H
9040 +
9041 +
9042 +/* time faking stuff */
9043 +
9044 +#ifdef CONFIG_VSERVER_VTIME
9045 +
9046 +extern void vx_adjust_timespec(struct timespec *ts);
9047 +extern int vx_settimeofday(const struct timespec *ts);
9048 +extern int vx_settimeofday64(const struct timespec *ts);
9049 +
9050 +#else
9051 +#define        vx_adjust_timespec(t)   do { } while (0)
9052 +#define        vx_settimeofday(t)      do_settimeofday(t)
9053 +#define        vx_settimeofday64(t)    do_settimeofday64(t)
9054 +#endif
9055 +
9056 +#else
9057 +#warning duplicate inclusion
9058 +#endif
9059 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/base.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/base.h
9060 --- linux-4.9.76/include/linux/vserver/base.h   1970-01-01 00:00:00.000000000 +0000
9061 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/base.h 2018-01-10 02:50:49.000000000 +0000
9062 @@ -0,0 +1,184 @@
9063 +#ifndef _VSERVER_BASE_H
9064 +#define _VSERVER_BASE_H
9065 +
9066 +
9067 +/* context state changes */
9068 +
9069 +enum {
9070 +       VSC_STARTUP = 1,
9071 +       VSC_SHUTDOWN,
9072 +
9073 +       VSC_NETUP,
9074 +       VSC_NETDOWN,
9075 +};
9076 +
9077 +
9078 +
9079 +#define vx_task_xid(t) ((t)->xid)
9080 +
9081 +#define vx_current_xid() vx_task_xid(current)
9082 +
9083 +#define current_vx_info() (current->vx_info)
9084 +
9085 +
9086 +#define nx_task_nid(t) ((t)->nid)
9087 +
9088 +#define nx_current_nid() nx_task_nid(current)
9089 +
9090 +#define current_nx_info() (current->nx_info)
9091 +
9092 +
9093 +/* generic flag merging */
9094 +
9095 +#define vs_check_flags(v, m, f)        (((v) & (m)) ^ (f))
9096 +
9097 +#define vs_mask_flags(v, f, m) (((v) & ~(m)) | ((f) & (m)))
9098 +
9099 +#define vs_mask_mask(v, f, m)  (((v) & ~(m)) | ((v) & (f) & (m)))
9100 +
9101 +#define vs_check_bit(v, n)     ((v) & (1LL << (n)))
9102 +
9103 +
9104 +/* context flags */
9105 +
9106 +#define __vx_flags(v)  ((v) ? (v)->vx_flags : 0)
9107 +
9108 +#define vx_current_flags()     __vx_flags(current_vx_info())
9109 +
9110 +#define vx_info_flags(v, m, f) \
9111 +       vs_check_flags(__vx_flags(v), m, f)
9112 +
9113 +#define task_vx_flags(t, m, f) \
9114 +       ((t) && vx_info_flags((t)->vx_info, m, f))
9115 +
9116 +#define vx_flags(m, f) vx_info_flags(current_vx_info(), m, f)
9117 +
9118 +
9119 +/* context caps */
9120 +
9121 +#define __vx_ccaps(v)  ((v) ? (v)->vx_ccaps : 0)
9122 +
9123 +#define vx_current_ccaps()     __vx_ccaps(current_vx_info())
9124 +
9125 +#define vx_info_ccaps(v, c)    (__vx_ccaps(v) & (c))
9126 +
9127 +#define vx_ccaps(c)    vx_info_ccaps(current_vx_info(), (c))
9128 +
9129 +
9130 +
9131 +/* network flags */
9132 +
9133 +#define __nx_flags(n)  ((n) ? (n)->nx_flags : 0)
9134 +
9135 +#define nx_current_flags()     __nx_flags(current_nx_info())
9136 +
9137 +#define nx_info_flags(n, m, f) \
9138 +       vs_check_flags(__nx_flags(n), m, f)
9139 +
9140 +#define task_nx_flags(t, m, f) \
9141 +       ((t) && nx_info_flags((t)->nx_info, m, f))
9142 +
9143 +#define nx_flags(m, f) nx_info_flags(current_nx_info(), m, f)
9144 +
9145 +
9146 +/* network caps */
9147 +
9148 +#define __nx_ncaps(n)  ((n) ? (n)->nx_ncaps : 0)
9149 +
9150 +#define nx_current_ncaps()     __nx_ncaps(current_nx_info())
9151 +
9152 +#define nx_info_ncaps(n, c)    (__nx_ncaps(n) & (c))
9153 +
9154 +#define nx_ncaps(c)    nx_info_ncaps(current_nx_info(), c)
9155 +
9156 +
9157 +/* context mask capabilities */
9158 +
9159 +#define __vx_mcaps(v)  ((v) ? (v)->vx_ccaps >> 32UL : ~0 )
9160 +
9161 +#define vx_info_mcaps(v, c)    (__vx_mcaps(v) & (c))
9162 +
9163 +#define vx_mcaps(c)    vx_info_mcaps(current_vx_info(), c)
9164 +
9165 +
9166 +/* context bcap mask */
9167 +
9168 +#define __vx_bcaps(v)          ((v)->vx_bcaps)
9169 +
9170 +#define vx_current_bcaps()     __vx_bcaps(current_vx_info())
9171 +
9172 +
9173 +/* mask given bcaps */
9174 +
9175 +#define vx_info_mbcaps(v, c)   ((v) ? cap_intersect(__vx_bcaps(v), c) : c)
9176 +
9177 +#define vx_mbcaps(c)           vx_info_mbcaps(current_vx_info(), c)
9178 +
9179 +
9180 +/* masked cap_bset */
9181 +
9182 +#define vx_info_cap_bset(v)    vx_info_mbcaps(v, current->cap_bset)
9183 +
9184 +#define vx_current_cap_bset()  vx_info_cap_bset(current_vx_info())
9185 +
9186 +#if 0
9187 +#define vx_info_mbcap(v, b) \
9188 +       (!vx_info_flags(v, VXF_STATE_SETUP, 0) ? \
9189 +       vx_info_bcaps(v, b) : (b))
9190 +
9191 +#define task_vx_mbcap(t, b) \
9192 +       vx_info_mbcap((t)->vx_info, (t)->b)
9193 +
9194 +#define vx_mbcap(b)    task_vx_mbcap(current, b)
9195 +#endif
9196 +
9197 +#define vx_cap_raised(v, c, f) cap_raised(vx_info_mbcaps(v, c), f)
9198 +
9199 +#define vx_capable(b, c) (capable(b) || \
9200 +       (cap_raised(current_cap(), b) && vx_ccaps(c)))
9201 +
9202 +#define vx_ns_capable(n, b, c) (ns_capable(n, b) || \
9203 +       (cap_raised(current_cap(), b) && vx_ccaps(c)))
9204 +
9205 +#define nx_capable(b, c) (capable(b) || \
9206 +       (cap_raised(current_cap(), b) && nx_ncaps(c)))
9207 +
9208 +#define nx_ns_capable(n, b, c) (ns_capable(n, b) || \
9209 +       (cap_raised(current_cap(), b) && nx_ncaps(c)))
9210 +
9211 +#define vx_task_initpid(t, n) \
9212 +       ((t)->vx_info && \
9213 +       ((t)->vx_info->vx_initpid == (n)))
9214 +
9215 +#define vx_current_initpid(n)  vx_task_initpid(current, n)
9216 +
9217 +
9218 +/* context unshare mask */
9219 +
9220 +#define __vx_umask(v)          ((v)->vx_umask)
9221 +
9222 +#define vx_current_umask()     __vx_umask(current_vx_info())
9223 +
9224 +#define vx_can_unshare(b, f) (capable(b) || \
9225 +       (cap_raised(current_cap(), b) && \
9226 +       !((f) & ~vx_current_umask())))
9227 +
9228 +#define vx_ns_can_unshare(n, b, f) (ns_capable(n, b) || \
9229 +       (cap_raised(current_cap(), b) && \
9230 +       !((f) & ~vx_current_umask())))
9231 +
9232 +#define __vx_wmask(v)          ((v)->vx_wmask)
9233 +
9234 +#define vx_current_wmask()     __vx_wmask(current_vx_info())
9235 +
9236 +
9237 +#define __vx_state(v)  ((v) ? ((v)->vx_state) : 0)
9238 +
9239 +#define vx_info_state(v, m)    (__vx_state(v) & (m))
9240 +
9241 +
9242 +#define __nx_state(n)  ((n) ? ((n)->nx_state) : 0)
9243 +
9244 +#define nx_info_state(n, m)    (__nx_state(n) & (m))
9245 +
9246 +#endif
9247 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/cacct.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct.h
9248 --- linux-4.9.76/include/linux/vserver/cacct.h  1970-01-01 00:00:00.000000000 +0000
9249 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct.h        2018-01-10 02:50:49.000000000 +0000
9250 @@ -0,0 +1,15 @@
9251 +#ifndef _VSERVER_CACCT_H
9252 +#define _VSERVER_CACCT_H
9253 +
9254 +
9255 +enum sock_acc_field {
9256 +       VXA_SOCK_UNSPEC = 0,
9257 +       VXA_SOCK_UNIX,
9258 +       VXA_SOCK_INET,
9259 +       VXA_SOCK_INET6,
9260 +       VXA_SOCK_PACKET,
9261 +       VXA_SOCK_OTHER,
9262 +       VXA_SOCK_SIZE   /* array size */
9263 +};
9264 +
9265 +#endif /* _VSERVER_CACCT_H */
9266 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/cacct_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct_cmd.h
9267 --- linux-4.9.76/include/linux/vserver/cacct_cmd.h      1970-01-01 00:00:00.000000000 +0000
9268 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct_cmd.h    2018-01-10 02:50:49.000000000 +0000
9269 @@ -0,0 +1,10 @@
9270 +#ifndef _VSERVER_CACCT_CMD_H
9271 +#define _VSERVER_CACCT_CMD_H
9272 +
9273 +
9274 +#include <linux/compiler.h>
9275 +#include <uapi/vserver/cacct_cmd.h>
9276 +
9277 +extern int vc_sock_stat(struct vx_info *, void __user *);
9278 +
9279 +#endif /* _VSERVER_CACCT_CMD_H */
9280 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/cacct_def.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct_def.h
9281 --- linux-4.9.76/include/linux/vserver/cacct_def.h      1970-01-01 00:00:00.000000000 +0000
9282 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct_def.h    2018-01-10 02:50:49.000000000 +0000
9283 @@ -0,0 +1,43 @@
9284 +#ifndef _VSERVER_CACCT_DEF_H
9285 +#define _VSERVER_CACCT_DEF_H
9286 +
9287 +#include <asm/atomic.h>
9288 +#include <linux/vserver/cacct.h>
9289 +
9290 +
9291 +struct _vx_sock_acc {
9292 +       atomic_long_t count;
9293 +       atomic_long_t total;
9294 +};
9295 +
9296 +/* context sub struct */
9297 +
9298 +struct _vx_cacct {
9299 +       struct _vx_sock_acc sock[VXA_SOCK_SIZE][3];
9300 +       atomic_t slab[8];
9301 +       atomic_t page[6][8];
9302 +};
9303 +
9304 +#ifdef CONFIG_VSERVER_DEBUG
9305 +
9306 +static inline void __dump_vx_cacct(struct _vx_cacct *cacct)
9307 +{
9308 +       int i, j;
9309 +
9310 +       printk("\t_vx_cacct:");
9311 +       for (i = 0; i < 6; i++) {
9312 +               struct _vx_sock_acc *ptr = cacct->sock[i];
9313 +
9314 +               printk("\t [%d] =", i);
9315 +               for (j = 0; j < 3; j++) {
9316 +                       printk(" [%d] = %8lu, %8lu", j,
9317 +                               atomic_long_read(&ptr[j].count),
9318 +                               atomic_long_read(&ptr[j].total));
9319 +               }
9320 +               printk("\n");
9321 +       }
9322 +}
9323 +
9324 +#endif
9325 +
9326 +#endif /* _VSERVER_CACCT_DEF_H */
9327 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/cacct_int.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct_int.h
9328 --- linux-4.9.76/include/linux/vserver/cacct_int.h      1970-01-01 00:00:00.000000000 +0000
9329 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/cacct_int.h    2018-01-10 02:50:49.000000000 +0000
9330 @@ -0,0 +1,17 @@
9331 +#ifndef _VSERVER_CACCT_INT_H
9332 +#define _VSERVER_CACCT_INT_H
9333 +
9334 +static inline
9335 +unsigned long vx_sock_count(struct _vx_cacct *cacct, int type, int pos)
9336 +{
9337 +       return atomic_long_read(&cacct->sock[type][pos].count);
9338 +}
9339 +
9340 +
9341 +static inline
9342 +unsigned long vx_sock_total(struct _vx_cacct *cacct, int type, int pos)
9343 +{
9344 +       return atomic_long_read(&cacct->sock[type][pos].total);
9345 +}
9346 +
9347 +#endif /* _VSERVER_CACCT_INT_H */
9348 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/check.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/check.h
9349 --- linux-4.9.76/include/linux/vserver/check.h  1970-01-01 00:00:00.000000000 +0000
9350 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/check.h        2018-01-10 02:50:49.000000000 +0000
9351 @@ -0,0 +1,89 @@
9352 +#ifndef _VSERVER_CHECK_H
9353 +#define _VSERVER_CHECK_H
9354 +
9355 +
9356 +#define MAX_S_CONTEXT  65535   /* Arbitrary limit */
9357 +
9358 +#ifdef CONFIG_VSERVER_DYNAMIC_IDS
9359 +#define MIN_D_CONTEXT  49152   /* dynamic contexts start here */
9360 +#else
9361 +#define MIN_D_CONTEXT  65536
9362 +#endif
9363 +
9364 +/* check conditions */
9365 +
9366 +#define VS_ADMIN       0x0001
9367 +#define VS_WATCH       0x0002
9368 +#define VS_HIDE                0x0004
9369 +#define VS_HOSTID      0x0008
9370 +
9371 +#define VS_IDENT       0x0010
9372 +#define VS_EQUIV       0x0020
9373 +#define VS_PARENT      0x0040
9374 +#define VS_CHILD       0x0080
9375 +
9376 +#define VS_ARG_MASK    0x00F0
9377 +
9378 +#define VS_DYNAMIC     0x0100
9379 +#define VS_STATIC      0x0200
9380 +
9381 +#define VS_ATR_MASK    0x0F00
9382 +
9383 +#ifdef CONFIG_VSERVER_PRIVACY
9384 +#define VS_ADMIN_P     (0)
9385 +#define VS_WATCH_P     (0)
9386 +#else
9387 +#define VS_ADMIN_P     VS_ADMIN
9388 +#define VS_WATCH_P     VS_WATCH
9389 +#endif
9390 +
9391 +#define VS_HARDIRQ     0x1000
9392 +#define VS_SOFTIRQ     0x2000
9393 +#define VS_IRQ         0x4000
9394 +
9395 +#define VS_IRQ_MASK    0xF000
9396 +
9397 +#include <linux/hardirq.h>
9398 +
9399 +/*
9400 + * check current context for ADMIN/WATCH and
9401 + * optionally against supplied argument
9402 + */
9403 +static inline int __vs_check(int cid, int id, unsigned int mode)
9404 +{
9405 +       if (mode & VS_ARG_MASK) {
9406 +               if ((mode & VS_IDENT) && (id == cid))
9407 +                       return 1;
9408 +       }
9409 +       if (mode & VS_ATR_MASK) {
9410 +               if ((mode & VS_DYNAMIC) &&
9411 +                       (id >= MIN_D_CONTEXT) &&
9412 +                       (id <= MAX_S_CONTEXT))
9413 +                       return 1;
9414 +               if ((mode & VS_STATIC) &&
9415 +                       (id > 1) && (id < MIN_D_CONTEXT))
9416 +                       return 1;
9417 +       }
9418 +       if (mode & VS_IRQ_MASK) {
9419 +               if ((mode & VS_IRQ) && unlikely(in_interrupt()))
9420 +                       return 1;
9421 +               if ((mode & VS_HARDIRQ) && unlikely(in_irq()))
9422 +                       return 1;
9423 +               if ((mode & VS_SOFTIRQ) && unlikely(in_softirq()))
9424 +                       return 1;
9425 +       }
9426 +       return (((mode & VS_ADMIN) && (cid == 0)) ||
9427 +               ((mode & VS_WATCH) && (cid == 1)) ||
9428 +               ((mode & VS_HOSTID) && (id == 0)));
9429 +}
9430 +
9431 +#define vx_check(c, m) __vs_check(vx_current_xid(), c, (m) | VS_IRQ)
9432 +
9433 +#define vx_weak_check(c, m)    ((m) ? vx_check(c, m) : 1)
9434 +
9435 +
9436 +#define nx_check(c, m) __vs_check(nx_current_nid(), c, m)
9437 +
9438 +#define nx_weak_check(c, m)    ((m) ? nx_check(c, m) : 1)
9439 +
9440 +#endif
9441 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/context.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/context.h
9442 --- linux-4.9.76/include/linux/vserver/context.h        1970-01-01 00:00:00.000000000 +0000
9443 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/context.h      2018-01-10 02:50:49.000000000 +0000
9444 @@ -0,0 +1,110 @@
9445 +#ifndef _VSERVER_CONTEXT_H
9446 +#define _VSERVER_CONTEXT_H
9447 +
9448 +
9449 +#include <linux/list.h>
9450 +#include <linux/spinlock.h>
9451 +#include <linux/rcupdate.h>
9452 +#include <uapi/vserver/context.h>
9453 +
9454 +#include "limit_def.h"
9455 +#include "sched_def.h"
9456 +#include "cvirt_def.h"
9457 +#include "cacct_def.h"
9458 +#include "device_def.h"
9459 +
9460 +#define VX_SPACES      2
9461 +
9462 +struct _vx_info_pc {
9463 +       struct _vx_sched_pc sched_pc;
9464 +       struct _vx_cvirt_pc cvirt_pc;
9465 +};
9466 +
9467 +struct _vx_space {
9468 +       unsigned long vx_nsmask;                /* assignment mask */
9469 +       struct nsproxy *vx_nsproxy;             /* private namespaces */
9470 +       struct fs_struct *vx_fs;                /* private namespace fs */
9471 +       const struct cred *vx_cred;             /* task credentials */
9472 +};
9473 +
9474 +struct vx_info {
9475 +       struct hlist_node vx_hlist;             /* linked list of contexts */
9476 +       vxid_t vx_id;                           /* context id */
9477 +       atomic_t vx_usecnt;                     /* usage count */
9478 +       atomic_t vx_tasks;                      /* tasks count */
9479 +       struct vx_info *vx_parent;              /* parent context */
9480 +       int vx_state;                           /* context state */
9481 +
9482 +       struct _vx_space space[VX_SPACES];      /* namespace store */
9483 +
9484 +       uint64_t vx_flags;                      /* context flags */
9485 +       uint64_t vx_ccaps;                      /* context caps (vserver) */
9486 +       uint64_t vx_umask;                      /* unshare mask (guest) */
9487 +       uint64_t vx_wmask;                      /* warn mask (guest) */
9488 +       kernel_cap_t vx_bcaps;                  /* bounding caps (system) */
9489 +
9490 +       struct task_struct *vx_reaper;          /* guest reaper process */
9491 +       pid_t vx_initpid;                       /* PID of guest init */
9492 +       int64_t vx_badness_bias;                /* OOM points bias */
9493 +
9494 +       struct _vx_limit limit;                 /* vserver limits */
9495 +       struct _vx_sched sched;                 /* vserver scheduler */
9496 +       struct _vx_cvirt cvirt;                 /* virtual/bias stuff */
9497 +       struct _vx_cacct cacct;                 /* context accounting */
9498 +
9499 +       struct _vx_device dmap;                 /* default device map targets */
9500 +
9501 +#ifndef CONFIG_SMP
9502 +       struct _vx_info_pc info_pc;             /* per cpu data */
9503 +#else
9504 +       struct _vx_info_pc *ptr_pc;             /* per cpu array */
9505 +#endif
9506 +
9507 +       wait_queue_head_t vx_wait;              /* context exit waitqueue */
9508 +       int reboot_cmd;                         /* last sys_reboot() cmd */
9509 +       int exit_code;                          /* last process exit code */
9510 +
9511 +       char vx_name[65];                       /* vserver name */
9512 +};
9513 +
9514 +#ifndef CONFIG_SMP
9515 +#define        vx_ptr_pc(vxi)          (&(vxi)->info_pc)
9516 +#define        vx_per_cpu(vxi, v, id)  vx_ptr_pc(vxi)->v
9517 +#else
9518 +#define        vx_ptr_pc(vxi)          ((vxi)->ptr_pc)
9519 +#define        vx_per_cpu(vxi, v, id)  per_cpu_ptr(vx_ptr_pc(vxi), id)->v
9520 +#endif
9521 +
9522 +#define        vx_cpu(vxi, v)          vx_per_cpu(vxi, v, smp_processor_id())
9523 +
9524 +
9525 +struct vx_info_save {
9526 +       struct vx_info *vxi;
9527 +       vxid_t xid;
9528 +};
9529 +
9530 +
9531 +/* status flags */
9532 +
9533 +#define VXS_HASHED     0x0001
9534 +#define VXS_PAUSED     0x0010
9535 +#define VXS_SHUTDOWN   0x0100
9536 +#define VXS_HELPER     0x1000
9537 +#define VXS_RELEASED   0x8000
9538 +
9539 +
9540 +extern void claim_vx_info(struct vx_info *, struct task_struct *);
9541 +extern void release_vx_info(struct vx_info *, struct task_struct *);
9542 +
9543 +extern struct vx_info *lookup_vx_info(int);
9544 +extern struct vx_info *lookup_or_create_vx_info(int);
9545 +
9546 +extern int get_xid_list(int, unsigned int *, int);
9547 +extern int xid_is_hashed(vxid_t);
9548 +
9549 +extern int vx_migrate_task(struct task_struct *, struct vx_info *, int);
9550 +
9551 +extern long vs_state_change(struct vx_info *, unsigned int);
9552 +
9553 +
9554 +#endif /* _VSERVER_CONTEXT_H */
9555 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/context_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/context_cmd.h
9556 --- linux-4.9.76/include/linux/vserver/context_cmd.h    1970-01-01 00:00:00.000000000 +0000
9557 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/context_cmd.h  2018-01-10 02:50:49.000000000 +0000
9558 @@ -0,0 +1,33 @@
9559 +#ifndef _VSERVER_CONTEXT_CMD_H
9560 +#define _VSERVER_CONTEXT_CMD_H
9561 +
9562 +#include <uapi/vserver/context_cmd.h>
9563 +
9564 +extern int vc_task_xid(uint32_t);
9565 +
9566 +extern int vc_vx_info(struct vx_info *, void __user *);
9567 +
9568 +extern int vc_ctx_stat(struct vx_info *, void __user *);
9569 +
9570 +extern int vc_ctx_create(uint32_t, void __user *);
9571 +extern int vc_ctx_migrate(struct vx_info *, void __user *);
9572 +
9573 +extern int vc_get_cflags(struct vx_info *, void __user *);
9574 +extern int vc_set_cflags(struct vx_info *, void __user *);
9575 +
9576 +extern int vc_get_ccaps(struct vx_info *, void __user *);
9577 +extern int vc_set_ccaps(struct vx_info *, void __user *);
9578 +
9579 +extern int vc_get_bcaps(struct vx_info *, void __user *);
9580 +extern int vc_set_bcaps(struct vx_info *, void __user *);
9581 +
9582 +extern int vc_get_umask(struct vx_info *, void __user *);
9583 +extern int vc_set_umask(struct vx_info *, void __user *);
9584 +
9585 +extern int vc_get_wmask(struct vx_info *, void __user *);
9586 +extern int vc_set_wmask(struct vx_info *, void __user *);
9587 +
9588 +extern int vc_get_badness(struct vx_info *, void __user *);
9589 +extern int vc_set_badness(struct vx_info *, void __user *);
9590 +
9591 +#endif /* _VSERVER_CONTEXT_CMD_H */
9592 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/cvirt.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/cvirt.h
9593 --- linux-4.9.76/include/linux/vserver/cvirt.h  1970-01-01 00:00:00.000000000 +0000
9594 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/cvirt.h        2018-01-10 02:50:49.000000000 +0000
9595 @@ -0,0 +1,18 @@
9596 +#ifndef _VSERVER_CVIRT_H
9597 +#define _VSERVER_CVIRT_H
9598 +
9599 +struct timespec;
9600 +
9601 +void vx_vsi_boottime(struct timespec *);
9602 +
9603 +void vx_vsi_uptime(struct timespec *, struct timespec *);
9604 +
9605 +
9606 +struct vx_info;
9607 +
9608 +void vx_update_load(struct vx_info *);
9609 +
9610 +
9611 +int vx_do_syslog(int, char __user *, int);
9612 +
9613 +#endif /* _VSERVER_CVIRT_H */
9614 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/cvirt_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/cvirt_cmd.h
9615 --- linux-4.9.76/include/linux/vserver/cvirt_cmd.h      1970-01-01 00:00:00.000000000 +0000
9616 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/cvirt_cmd.h    2018-01-10 02:50:49.000000000 +0000
9617 @@ -0,0 +1,13 @@
9618 +#ifndef _VSERVER_CVIRT_CMD_H
9619 +#define _VSERVER_CVIRT_CMD_H
9620 +
9621 +
9622 +#include <linux/compiler.h>
9623 +#include <uapi/vserver/cvirt_cmd.h>
9624 +
9625 +extern int vc_set_vhi_name(struct vx_info *, void __user *);
9626 +extern int vc_get_vhi_name(struct vx_info *, void __user *);
9627 +
9628 +extern int vc_virt_stat(struct vx_info *, void __user *);
9629 +
9630 +#endif /* _VSERVER_CVIRT_CMD_H */
9631 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/cvirt_def.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/cvirt_def.h
9632 --- linux-4.9.76/include/linux/vserver/cvirt_def.h      1970-01-01 00:00:00.000000000 +0000
9633 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/cvirt_def.h    2018-01-10 10:07:41.000000000 +0000
9634 @@ -0,0 +1,80 @@
9635 +#ifndef _VSERVER_CVIRT_DEF_H
9636 +#define _VSERVER_CVIRT_DEF_H
9637 +
9638 +#include <linux/jiffies.h>
9639 +#include <linux/spinlock.h>
9640 +#include <linux/wait.h>
9641 +#include <linux/time.h>
9642 +#include <asm/atomic.h>
9643 +
9644 +
9645 +struct _vx_usage_stat {
9646 +       uint64_t user;
9647 +       uint64_t nice;
9648 +       uint64_t system;
9649 +       uint64_t softirq;
9650 +       uint64_t irq;
9651 +       uint64_t idle;
9652 +       uint64_t iowait;
9653 +};
9654 +
9655 +struct _vx_syslog {
9656 +       wait_queue_head_t log_wait;
9657 +       spinlock_t logbuf_lock;         /* lock for the log buffer */
9658 +
9659 +       unsigned long log_start;        /* next char to be read by syslog() */
9660 +       unsigned long con_start;        /* next char to be sent to consoles */
9661 +       unsigned long log_end;  /* most-recently-written-char + 1 */
9662 +       unsigned long logged_chars;     /* #chars since last read+clear operation */
9663 +
9664 +       char log_buf[1024];
9665 +};
9666 +
9667 +
9668 +/* context sub struct */
9669 +
9670 +struct _vx_cvirt {
9671 +       atomic_t nr_threads;            /* number of current threads */
9672 +       atomic_t nr_running;            /* number of running threads */
9673 +       atomic_t nr_uninterruptible;    /* number of uninterruptible threads */
9674 +
9675 +       atomic_t nr_onhold;             /* processes on hold */
9676 +       uint32_t onhold_last;           /* jiffies when put on hold */
9677 +
9678 +       struct timespec64 bias_ts;      /* time offset to the host */
9679 +       struct timespec64 bias_idle;
9680 +       struct timespec64 bias_uptime;  /* context creation point */
9681 +       uint64_t bias_clock;            /* offset in clock_t */
9682 +
9683 +       spinlock_t load_lock;           /* lock for the load averages */
9684 +       atomic_t load_updates;          /* nr of load updates done so far */
9685 +       uint32_t load_last;             /* last time load was calculated */
9686 +       uint32_t load[3];               /* load averages 1,5,15 */
9687 +
9688 +       atomic_t total_forks;           /* number of forks so far */
9689 +
9690 +       struct _vx_syslog syslog;
9691 +};
9692 +
9693 +struct _vx_cvirt_pc {
9694 +       struct _vx_usage_stat cpustat;
9695 +};
9696 +
9697 +
9698 +#ifdef CONFIG_VSERVER_DEBUG
9699 +
9700 +static inline void __dump_vx_cvirt(struct _vx_cvirt *cvirt)
9701 +{
9702 +       printk("\t_vx_cvirt:\n");
9703 +       printk("\t threads: %4d, %4d, %4d, %4d\n",
9704 +               atomic_read(&cvirt->nr_threads),
9705 +               atomic_read(&cvirt->nr_running),
9706 +               atomic_read(&cvirt->nr_uninterruptible),
9707 +               atomic_read(&cvirt->nr_onhold));
9708 +       /* add rest here */
9709 +       printk("\t total_forks = %d\n", atomic_read(&cvirt->total_forks));
9710 +}
9711 +
9712 +#endif
9713 +
9714 +#endif /* _VSERVER_CVIRT_DEF_H */
9715 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/debug.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/debug.h
9716 --- linux-4.9.76/include/linux/vserver/debug.h  1970-01-01 00:00:00.000000000 +0000
9717 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/debug.h        2018-01-10 02:50:49.000000000 +0000
9718 @@ -0,0 +1,146 @@
9719 +#ifndef _VSERVER_DEBUG_H
9720 +#define _VSERVER_DEBUG_H
9721 +
9722 +
9723 +#define VXD_CBIT(n, m) (vs_debug_ ## n & (1 << (m)))
9724 +#define VXD_CMIN(n, m) (vs_debug_ ## n > (m))
9725 +#define VXD_MASK(n, m) (vs_debug_ ## n & (m))
9726 +
9727 +#define VXD_DEV(d)     (d), (d)->bd_inode->i_ino,              \
9728 +                       imajor((d)->bd_inode), iminor((d)->bd_inode)
9729 +#define VXF_DEV                "%p[%lu,%d:%d]"
9730 +
9731 +#if    defined(CONFIG_QUOTES_UTF8)
9732 +#define        VS_Q_LQM        "\xc2\xbb"
9733 +#define        VS_Q_RQM        "\xc2\xab"
9734 +#elif  defined(CONFIG_QUOTES_ASCII)
9735 +#define        VS_Q_LQM        "\x27"
9736 +#define        VS_Q_RQM        "\x27"
9737 +#else
9738 +#define        VS_Q_LQM        "\xbb"
9739 +#define        VS_Q_RQM        "\xab"
9740 +#endif
9741 +
9742 +#define        VS_Q(f)         VS_Q_LQM f VS_Q_RQM
9743 +
9744 +
9745 +#define vxd_path(p)                                            \
9746 +       ({ static char _buffer[PATH_MAX];                       \
9747 +          d_path(p, _buffer, sizeof(_buffer)); })
9748 +
9749 +#define vxd_cond_path(n)                                       \
9750 +       ((n) ? vxd_path(&(n)->path) : "<null>" )
9751 +
9752 +
9753 +#ifdef CONFIG_VSERVER_DEBUG
9754 +
9755 +extern unsigned int vs_debug_switch;
9756 +extern unsigned int vs_debug_xid;
9757 +extern unsigned int vs_debug_nid;
9758 +extern unsigned int vs_debug_tag;
9759 +extern unsigned int vs_debug_net;
9760 +extern unsigned int vs_debug_limit;
9761 +extern unsigned int vs_debug_cres;
9762 +extern unsigned int vs_debug_dlim;
9763 +extern unsigned int vs_debug_quota;
9764 +extern unsigned int vs_debug_cvirt;
9765 +extern unsigned int vs_debug_space;
9766 +extern unsigned int vs_debug_perm;
9767 +extern unsigned int vs_debug_misc;
9768 +
9769 +
9770 +#define VX_LOGLEVEL    "vxD: "
9771 +#define VX_PROC_FMT    "%p: "
9772 +#define VX_PROCESS     current
9773 +
9774 +#define vxdprintk(c, f, x...)                                  \
9775 +       do {                                                    \
9776 +               if (c)                                          \
9777 +                       printk(VX_LOGLEVEL VX_PROC_FMT f "\n",  \
9778 +                               VX_PROCESS , ##x);              \
9779 +       } while (0)
9780 +
9781 +#define vxlprintk(c, f, x...)                                  \
9782 +       do {                                                    \
9783 +               if (c)                                          \
9784 +                       printk(VX_LOGLEVEL f " @%s:%d\n", x);   \
9785 +       } while (0)
9786 +
9787 +#define vxfprintk(c, f, x...)                                  \
9788 +       do {                                                    \
9789 +               if (c)                                          \
9790 +                       printk(VX_LOGLEVEL f " %s@%s:%d\n", x); \
9791 +       } while (0)
9792 +
9793 +
9794 +struct vx_info;
9795 +
9796 +void dump_vx_info(struct vx_info *, int);
9797 +void dump_vx_info_inactive(int);
9798 +
9799 +#else  /* CONFIG_VSERVER_DEBUG */
9800 +
9801 +#define vs_debug_switch        0
9802 +#define vs_debug_xid   0
9803 +#define vs_debug_nid   0
9804 +#define vs_debug_tag   0
9805 +#define vs_debug_net   0
9806 +#define vs_debug_limit 0
9807 +#define vs_debug_cres  0
9808 +#define vs_debug_dlim  0
9809 +#define vs_debug_quota 0
9810 +#define vs_debug_cvirt 0
9811 +#define vs_debug_space 0
9812 +#define vs_debug_perm  0
9813 +#define vs_debug_misc  0
9814 +
9815 +#define vxdprintk(x...) do { } while (0)
9816 +#define vxlprintk(x...) do { } while (0)
9817 +#define vxfprintk(x...) do { } while (0)
9818 +
9819 +#endif /* CONFIG_VSERVER_DEBUG */
9820 +
9821 +
9822 +#ifdef CONFIG_VSERVER_WARN
9823 +
9824 +#define VX_WARNLEVEL   KERN_WARNING "vxW: "
9825 +#define VX_WARN_TASK   "[" VS_Q("%s") ",%u:#%u|%u|%u] "
9826 +#define VX_WARN_XID    "[xid #%u] "
9827 +#define VX_WARN_NID    "[nid #%u] "
9828 +#define VX_WARN_TAG    "[tag #%u] "
9829 +
9830 +#define vxwprintk(c, f, x...)                                  \
9831 +       do {                                                    \
9832 +               if (c)                                          \
9833 +                       printk(VX_WARNLEVEL f "\n", ##x);       \
9834 +       } while (0)
9835 +
9836 +#else  /* CONFIG_VSERVER_WARN */
9837 +
9838 +#define vxwprintk(x...) do { } while (0)
9839 +
9840 +#endif /* CONFIG_VSERVER_WARN */
9841 +
9842 +#define vxwprintk_task(c, f, x...)                             \
9843 +       vxwprintk(c, VX_WARN_TASK f,                            \
9844 +               current->comm, current->pid,                    \
9845 +               current->xid, current->nid,                     \
9846 +               current->tag, ##x)
9847 +#define vxwprintk_xid(c, f, x...)                              \
9848 +       vxwprintk(c, VX_WARN_XID f, current->xid, x)
9849 +#define vxwprintk_nid(c, f, x...)                              \
9850 +       vxwprintk(c, VX_WARN_NID f, current->nid, x)
9851 +#define vxwprintk_tag(c, f, x...)                              \
9852 +       vxwprintk(c, VX_WARN_TAG f, current->tag, x)
9853 +
9854 +#ifdef CONFIG_VSERVER_DEBUG
9855 +#define vxd_assert_lock(l)     assert_spin_locked(l)
9856 +#define vxd_assert(c, f, x...) vxlprintk(!(c), \
9857 +       "assertion [" f "] failed.", ##x, __FILE__, __LINE__)
9858 +#else
9859 +#define vxd_assert_lock(l)     do { } while (0)
9860 +#define vxd_assert(c, f, x...) do { } while (0)
9861 +#endif
9862 +
9863 +
9864 +#endif /* _VSERVER_DEBUG_H */
9865 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/debug_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/debug_cmd.h
9866 --- linux-4.9.76/include/linux/vserver/debug_cmd.h      1970-01-01 00:00:00.000000000 +0000
9867 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/debug_cmd.h    2018-01-10 02:50:49.000000000 +0000
9868 @@ -0,0 +1,37 @@
9869 +#ifndef _VSERVER_DEBUG_CMD_H
9870 +#define _VSERVER_DEBUG_CMD_H
9871 +
9872 +#include <uapi/vserver/debug_cmd.h>
9873 +
9874 +
9875 +#ifdef CONFIG_COMPAT
9876 +
9877 +#include <asm/compat.h>
9878 +
9879 +struct vcmd_read_history_v0_x32 {
9880 +       uint32_t index;
9881 +       uint32_t count;
9882 +       compat_uptr_t data_ptr;
9883 +};
9884 +
9885 +struct vcmd_read_monitor_v0_x32 {
9886 +       uint32_t index;
9887 +       uint32_t count;
9888 +       compat_uptr_t data_ptr;
9889 +};
9890 +
9891 +#endif  /* CONFIG_COMPAT */
9892 +
9893 +extern int vc_dump_history(uint32_t);
9894 +
9895 +extern int vc_read_history(uint32_t, void __user *);
9896 +extern int vc_read_monitor(uint32_t, void __user *);
9897 +
9898 +#ifdef CONFIG_COMPAT
9899 +
9900 +extern int vc_read_history_x32(uint32_t, void __user *);
9901 +extern int vc_read_monitor_x32(uint32_t, void __user *);
9902 +
9903 +#endif  /* CONFIG_COMPAT */
9904 +
9905 +#endif /* _VSERVER_DEBUG_CMD_H */
9906 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/device.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/device.h
9907 --- linux-4.9.76/include/linux/vserver/device.h 1970-01-01 00:00:00.000000000 +0000
9908 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/device.h       2018-01-10 02:50:49.000000000 +0000
9909 @@ -0,0 +1,9 @@
9910 +#ifndef _VSERVER_DEVICE_H
9911 +#define _VSERVER_DEVICE_H
9912 +
9913 +
9914 +#include <uapi/vserver/device.h>
9915 +
9916 +#else  /* _VSERVER_DEVICE_H */
9917 +#warning duplicate inclusion
9918 +#endif /* _VSERVER_DEVICE_H */
9919 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/device_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/device_cmd.h
9920 --- linux-4.9.76/include/linux/vserver/device_cmd.h     1970-01-01 00:00:00.000000000 +0000
9921 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/device_cmd.h   2018-01-10 02:50:49.000000000 +0000
9922 @@ -0,0 +1,31 @@
9923 +#ifndef _VSERVER_DEVICE_CMD_H
9924 +#define _VSERVER_DEVICE_CMD_H
9925 +
9926 +#include <uapi/vserver/device_cmd.h>
9927 +
9928 +
9929 +#ifdef CONFIG_COMPAT
9930 +
9931 +#include <asm/compat.h>
9932 +
9933 +struct vcmd_set_mapping_v0_x32 {
9934 +       compat_uptr_t device_ptr;
9935 +       compat_uptr_t target_ptr;
9936 +       uint32_t flags;
9937 +};
9938 +
9939 +#endif /* CONFIG_COMPAT */
9940 +
9941 +#include <linux/compiler.h>
9942 +
9943 +extern int vc_set_mapping(struct vx_info *, void __user *);
9944 +extern int vc_unset_mapping(struct vx_info *, void __user *);
9945 +
9946 +#ifdef CONFIG_COMPAT
9947 +
9948 +extern int vc_set_mapping_x32(struct vx_info *, void __user *);
9949 +extern int vc_unset_mapping_x32(struct vx_info *, void __user *);
9950 +
9951 +#endif /* CONFIG_COMPAT */
9952 +
9953 +#endif /* _VSERVER_DEVICE_CMD_H */
9954 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/device_def.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/device_def.h
9955 --- linux-4.9.76/include/linux/vserver/device_def.h     1970-01-01 00:00:00.000000000 +0000
9956 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/device_def.h   2018-01-10 02:50:49.000000000 +0000
9957 @@ -0,0 +1,17 @@
9958 +#ifndef _VSERVER_DEVICE_DEF_H
9959 +#define _VSERVER_DEVICE_DEF_H
9960 +
9961 +#include <linux/types.h>
9962 +
9963 +struct vx_dmap_target {
9964 +       dev_t target;
9965 +       uint32_t flags;
9966 +};
9967 +
9968 +struct _vx_device {
9969 +#ifdef CONFIG_VSERVER_DEVICE
9970 +       struct vx_dmap_target targets[2];
9971 +#endif
9972 +};
9973 +
9974 +#endif /* _VSERVER_DEVICE_DEF_H */
9975 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/dlimit.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/dlimit.h
9976 --- linux-4.9.76/include/linux/vserver/dlimit.h 1970-01-01 00:00:00.000000000 +0000
9977 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/dlimit.h       2018-01-10 02:50:49.000000000 +0000
9978 @@ -0,0 +1,54 @@
9979 +#ifndef _VSERVER_DLIMIT_H
9980 +#define _VSERVER_DLIMIT_H
9981 +
9982 +#include "switch.h"
9983 +
9984 +
9985 +#ifdef __KERNEL__
9986 +
9987 +/*      keep in sync with CDLIM_INFINITY       */
9988 +
9989 +#define DLIM_INFINITY          (~0ULL)
9990 +
9991 +#include <linux/spinlock.h>
9992 +#include <linux/rcupdate.h>
9993 +
9994 +struct super_block;
9995 +
9996 +struct dl_info {
9997 +       struct hlist_node dl_hlist;             /* linked list of contexts */
9998 +       struct rcu_head dl_rcu;                 /* the rcu head */
9999 +       vtag_t dl_tag;                          /* context tag */
10000 +       atomic_t dl_usecnt;                     /* usage count */
10001 +       atomic_t dl_refcnt;                     /* reference count */
10002 +
10003 +       struct super_block *dl_sb;              /* associated superblock */
10004 +
10005 +       spinlock_t dl_lock;                     /* protect the values */
10006 +
10007 +       unsigned long long dl_space_used;       /* used space in bytes */
10008 +       unsigned long long dl_space_total;      /* maximum space in bytes */
10009 +       unsigned long dl_inodes_used;           /* used inodes */
10010 +       unsigned long dl_inodes_total;          /* maximum inodes */
10011 +
10012 +       unsigned int dl_nrlmult;                /* non root limit mult */
10013 +};
10014 +
10015 +struct rcu_head;
10016 +
10017 +extern void rcu_free_dl_info(struct rcu_head *);
10018 +extern void unhash_dl_info(struct dl_info *);
10019 +
10020 +extern struct dl_info *locate_dl_info(struct super_block *, vtag_t);
10021 +
10022 +
10023 +struct kstatfs;
10024 +
10025 +extern void vx_vsi_statfs(struct super_block *, struct kstatfs *);
10026 +
10027 +typedef uint64_t dlsize_t;
10028 +
10029 +#endif /* __KERNEL__ */
10030 +#else  /* _VSERVER_DLIMIT_H */
10031 +#warning duplicate inclusion
10032 +#endif /* _VSERVER_DLIMIT_H */
10033 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/dlimit_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/dlimit_cmd.h
10034 --- linux-4.9.76/include/linux/vserver/dlimit_cmd.h     1970-01-01 00:00:00.000000000 +0000
10035 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/dlimit_cmd.h   2018-01-10 02:50:49.000000000 +0000
10036 @@ -0,0 +1,46 @@
10037 +#ifndef _VSERVER_DLIMIT_CMD_H
10038 +#define _VSERVER_DLIMIT_CMD_H
10039 +
10040 +#include <uapi/vserver/dlimit_cmd.h>
10041 +
10042 +
10043 +#ifdef CONFIG_COMPAT
10044 +
10045 +#include <asm/compat.h>
10046 +
10047 +struct vcmd_ctx_dlimit_base_v0_x32 {
10048 +       compat_uptr_t name_ptr;
10049 +       uint32_t flags;
10050 +};
10051 +
10052 +struct vcmd_ctx_dlimit_v0_x32 {
10053 +       compat_uptr_t name_ptr;
10054 +       uint32_t space_used;                    /* used space in kbytes */
10055 +       uint32_t space_total;                   /* maximum space in kbytes */
10056 +       uint32_t inodes_used;                   /* used inodes */
10057 +       uint32_t inodes_total;                  /* maximum inodes */
10058 +       uint32_t reserved;                      /* reserved for root in % */
10059 +       uint32_t flags;
10060 +};
10061 +
10062 +#endif /* CONFIG_COMPAT */
10063 +
10064 +#include <linux/compiler.h>
10065 +
10066 +extern int vc_add_dlimit(uint32_t, void __user *);
10067 +extern int vc_rem_dlimit(uint32_t, void __user *);
10068 +
10069 +extern int vc_set_dlimit(uint32_t, void __user *);
10070 +extern int vc_get_dlimit(uint32_t, void __user *);
10071 +
10072 +#ifdef CONFIG_COMPAT
10073 +
10074 +extern int vc_add_dlimit_x32(uint32_t, void __user *);
10075 +extern int vc_rem_dlimit_x32(uint32_t, void __user *);
10076 +
10077 +extern int vc_set_dlimit_x32(uint32_t, void __user *);
10078 +extern int vc_get_dlimit_x32(uint32_t, void __user *);
10079 +
10080 +#endif /* CONFIG_COMPAT */
10081 +
10082 +#endif /* _VSERVER_DLIMIT_CMD_H */
10083 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/global.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/global.h
10084 --- linux-4.9.76/include/linux/vserver/global.h 1970-01-01 00:00:00.000000000 +0000
10085 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/global.h       2018-01-13 03:51:55.000000000 +0000
10086 @@ -0,0 +1,20 @@
10087 +#ifndef _VSERVER_GLOBAL_H
10088 +#define _VSERVER_GLOBAL_H
10089 +
10090 +
10091 +extern atomic_t vx_global_ctotal;
10092 +extern atomic_t vx_global_cactive;
10093 +
10094 +extern atomic_t nx_global_ctotal;
10095 +extern atomic_t nx_global_cactive;
10096 +
10097 +extern atomic_t vs_global_nsproxy;
10098 +extern atomic_t vs_global_fs;
10099 +extern atomic_t vs_global_mnt_ns;
10100 +extern atomic_t vs_global_uts_ns;
10101 +extern atomic_t vs_global_ipc_ns;
10102 +extern atomic_t vs_global_user_ns;
10103 +extern atomic_t vs_global_pid_ns;
10104 +
10105 +
10106 +#endif /* _VSERVER_GLOBAL_H */
10107 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/history.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/history.h
10108 --- linux-4.9.76/include/linux/vserver/history.h        1970-01-01 00:00:00.000000000 +0000
10109 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/history.h      2018-01-10 02:50:49.000000000 +0000
10110 @@ -0,0 +1,197 @@
10111 +#ifndef _VSERVER_HISTORY_H
10112 +#define _VSERVER_HISTORY_H
10113 +
10114 +
10115 +enum {
10116 +       VXH_UNUSED = 0,
10117 +       VXH_THROW_OOPS = 1,
10118 +
10119 +       VXH_GET_VX_INFO,
10120 +       VXH_PUT_VX_INFO,
10121 +       VXH_INIT_VX_INFO,
10122 +       VXH_SET_VX_INFO,
10123 +       VXH_CLR_VX_INFO,
10124 +       VXH_CLAIM_VX_INFO,
10125 +       VXH_RELEASE_VX_INFO,
10126 +       VXH_ALLOC_VX_INFO,
10127 +       VXH_DEALLOC_VX_INFO,
10128 +       VXH_HASH_VX_INFO,
10129 +       VXH_UNHASH_VX_INFO,
10130 +       VXH_LOC_VX_INFO,
10131 +       VXH_LOOKUP_VX_INFO,
10132 +       VXH_CREATE_VX_INFO,
10133 +};
10134 +
10135 +struct _vxhe_vxi {
10136 +       struct vx_info *ptr;
10137 +       unsigned xid;
10138 +       unsigned usecnt;
10139 +       unsigned tasks;
10140 +};
10141 +
10142 +struct _vxhe_set_clr {
10143 +       void *data;
10144 +};
10145 +
10146 +struct _vxhe_loc_lookup {
10147 +       unsigned arg;
10148 +};
10149 +
10150 +struct _vx_hist_entry {
10151 +       void *loc;
10152 +       unsigned short seq;
10153 +       unsigned short type;
10154 +       struct _vxhe_vxi vxi;
10155 +       union {
10156 +               struct _vxhe_set_clr sc;
10157 +               struct _vxhe_loc_lookup ll;
10158 +       };
10159 +};
10160 +
10161 +#ifdef CONFIG_VSERVER_HISTORY
10162 +
10163 +extern unsigned volatile int vxh_active;
10164 +
10165 +struct _vx_hist_entry *vxh_advance(void *loc);
10166 +
10167 +
10168 +static inline
10169 +void   __vxh_copy_vxi(struct _vx_hist_entry *entry, struct vx_info *vxi)
10170 +{
10171 +       entry->vxi.ptr = vxi;
10172 +       if (vxi) {
10173 +               entry->vxi.usecnt = atomic_read(&vxi->vx_usecnt);
10174 +               entry->vxi.tasks = atomic_read(&vxi->vx_tasks);
10175 +               entry->vxi.xid = vxi->vx_id;
10176 +       }
10177 +}
10178 +
10179 +
10180 +#define        __HERE__ current_text_addr()
10181 +
10182 +#define __VXH_BODY(__type, __data, __here)     \
10183 +       struct _vx_hist_entry *entry;           \
10184 +                                               \
10185 +       preempt_disable();                      \
10186 +       entry = vxh_advance(__here);            \
10187 +       __data;                                 \
10188 +       entry->type = __type;                   \
10189 +       preempt_enable();
10190 +
10191 +
10192 +       /* pass vxi only */
10193 +
10194 +#define __VXH_SMPL                             \
10195 +       __vxh_copy_vxi(entry, vxi)
10196 +
10197 +static inline
10198 +void   __vxh_smpl(struct vx_info *vxi, int __type, void *__here)
10199 +{
10200 +       __VXH_BODY(__type, __VXH_SMPL, __here)
10201 +}
10202 +
10203 +       /* pass vxi and data (void *) */
10204 +
10205 +#define __VXH_DATA                             \
10206 +       __vxh_copy_vxi(entry, vxi);             \
10207 +       entry->sc.data = data
10208 +
10209 +static inline
10210 +void   __vxh_data(struct vx_info *vxi, void *data,
10211 +                       int __type, void *__here)
10212 +{
10213 +       __VXH_BODY(__type, __VXH_DATA, __here)
10214 +}
10215 +
10216 +       /* pass vxi and arg (long) */
10217 +
10218 +#define __VXH_LONG                             \
10219 +       __vxh_copy_vxi(entry, vxi);             \
10220 +       entry->ll.arg = arg
10221 +
10222 +static inline
10223 +void   __vxh_long(struct vx_info *vxi, long arg,
10224 +                       int __type, void *__here)
10225 +{
10226 +       __VXH_BODY(__type, __VXH_LONG, __here)
10227 +}
10228 +
10229 +
10230 +static inline
10231 +void   __vxh_throw_oops(void *__here)
10232 +{
10233 +       __VXH_BODY(VXH_THROW_OOPS, {}, __here);
10234 +       /* prevent further acquisition */
10235 +       vxh_active = 0;
10236 +}
10237 +
10238 +
10239 +#define vxh_throw_oops()       __vxh_throw_oops(__HERE__);
10240 +
10241 +#define __vxh_get_vx_info(v, h)        __vxh_smpl(v, VXH_GET_VX_INFO, h);
10242 +#define __vxh_put_vx_info(v, h)        __vxh_smpl(v, VXH_PUT_VX_INFO, h);
10243 +
10244 +#define __vxh_init_vx_info(v, d, h) \
10245 +       __vxh_data(v, d, VXH_INIT_VX_INFO, h);
10246 +#define __vxh_set_vx_info(v, d, h) \
10247 +       __vxh_data(v, d, VXH_SET_VX_INFO, h);
10248 +#define __vxh_clr_vx_info(v, d, h) \
10249 +       __vxh_data(v, d, VXH_CLR_VX_INFO, h);
10250 +
10251 +#define __vxh_claim_vx_info(v, d, h) \
10252 +       __vxh_data(v, d, VXH_CLAIM_VX_INFO, h);
10253 +#define __vxh_release_vx_info(v, d, h) \
10254 +       __vxh_data(v, d, VXH_RELEASE_VX_INFO, h);
10255 +
10256 +#define vxh_alloc_vx_info(v) \
10257 +       __vxh_smpl(v, VXH_ALLOC_VX_INFO, __HERE__);
10258 +#define vxh_dealloc_vx_info(v) \
10259 +       __vxh_smpl(v, VXH_DEALLOC_VX_INFO, __HERE__);
10260 +
10261 +#define vxh_hash_vx_info(v) \
10262 +       __vxh_smpl(v, VXH_HASH_VX_INFO, __HERE__);
10263 +#define vxh_unhash_vx_info(v) \
10264 +       __vxh_smpl(v, VXH_UNHASH_VX_INFO, __HERE__);
10265 +
10266 +#define vxh_loc_vx_info(v, l) \
10267 +       __vxh_long(v, l, VXH_LOC_VX_INFO, __HERE__);
10268 +#define vxh_lookup_vx_info(v, l) \
10269 +       __vxh_long(v, l, VXH_LOOKUP_VX_INFO, __HERE__);
10270 +#define vxh_create_vx_info(v, l) \
10271 +       __vxh_long(v, l, VXH_CREATE_VX_INFO, __HERE__);
10272 +
10273 +extern void vxh_dump_history(void);
10274 +
10275 +
10276 +#else  /* CONFIG_VSERVER_HISTORY */
10277 +
10278 +#define        __HERE__        0
10279 +
10280 +#define vxh_throw_oops()               do { } while (0)
10281 +
10282 +#define __vxh_get_vx_info(v, h)                do { } while (0)
10283 +#define __vxh_put_vx_info(v, h)                do { } while (0)
10284 +
10285 +#define __vxh_init_vx_info(v, d, h)    do { } while (0)
10286 +#define __vxh_set_vx_info(v, d, h)     do { } while (0)
10287 +#define __vxh_clr_vx_info(v, d, h)     do { } while (0)
10288 +
10289 +#define __vxh_claim_vx_info(v, d, h)   do { } while (0)
10290 +#define __vxh_release_vx_info(v, d, h) do { } while (0)
10291 +
10292 +#define vxh_alloc_vx_info(v)           do { } while (0)
10293 +#define vxh_dealloc_vx_info(v)         do { } while (0)
10294 +
10295 +#define vxh_hash_vx_info(v)            do { } while (0)
10296 +#define vxh_unhash_vx_info(v)          do { } while (0)
10297 +
10298 +#define vxh_loc_vx_info(v, l)          do { } while (0)
10299 +#define vxh_lookup_vx_info(v, l)       do { } while (0)
10300 +#define vxh_create_vx_info(v, l)       do { } while (0)
10301 +
10302 +#define vxh_dump_history()             do { } while (0)
10303 +
10304 +
10305 +#endif /* CONFIG_VSERVER_HISTORY */
10306 +
10307 +#endif /* _VSERVER_HISTORY_H */
10308 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/inode.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/inode.h
10309 --- linux-4.9.76/include/linux/vserver/inode.h  1970-01-01 00:00:00.000000000 +0000
10310 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/inode.h        2018-01-10 02:50:49.000000000 +0000
10311 @@ -0,0 +1,19 @@
10312 +#ifndef _VSERVER_INODE_H
10313 +#define _VSERVER_INODE_H
10314 +
10315 +#include <uapi/vserver/inode.h>
10316 +
10317 +
10318 +#ifdef CONFIG_VSERVER_PROC_SECURE
10319 +#define IATTR_PROC_DEFAULT     ( IATTR_ADMIN | IATTR_HIDE )
10320 +#define IATTR_PROC_SYMLINK     ( IATTR_ADMIN )
10321 +#else
10322 +#define IATTR_PROC_DEFAULT     ( IATTR_ADMIN )
10323 +#define IATTR_PROC_SYMLINK     ( IATTR_ADMIN )
10324 +#endif
10325 +
10326 +#define vx_hide_check(c, m)    (((m) & IATTR_HIDE) ? vx_check(c, m) : 1)
10327 +
10328 +#else  /* _VSERVER_INODE_H */
10329 +#warning duplicate inclusion
10330 +#endif /* _VSERVER_INODE_H */
10331 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/inode_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/inode_cmd.h
10332 --- linux-4.9.76/include/linux/vserver/inode_cmd.h      1970-01-01 00:00:00.000000000 +0000
10333 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/inode_cmd.h    2018-01-10 02:50:49.000000000 +0000
10334 @@ -0,0 +1,36 @@
10335 +#ifndef _VSERVER_INODE_CMD_H
10336 +#define _VSERVER_INODE_CMD_H
10337 +
10338 +#include <uapi/vserver/inode_cmd.h>
10339 +
10340 +
10341 +
10342 +#ifdef CONFIG_COMPAT
10343 +
10344 +#include <asm/compat.h>
10345 +
10346 +struct vcmd_ctx_iattr_v1_x32 {
10347 +       compat_uptr_t name_ptr;
10348 +       uint32_t tag;
10349 +       uint32_t flags;
10350 +       uint32_t mask;
10351 +};
10352 +
10353 +#endif /* CONFIG_COMPAT */
10354 +
10355 +#include <linux/compiler.h>
10356 +
10357 +extern int vc_get_iattr(void __user *);
10358 +extern int vc_set_iattr(void __user *);
10359 +
10360 +extern int vc_fget_iattr(uint32_t, void __user *);
10361 +extern int vc_fset_iattr(uint32_t, void __user *);
10362 +
10363 +#ifdef CONFIG_COMPAT
10364 +
10365 +extern int vc_get_iattr_x32(void __user *);
10366 +extern int vc_set_iattr_x32(void __user *);
10367 +
10368 +#endif /* CONFIG_COMPAT */
10369 +
10370 +#endif /* _VSERVER_INODE_CMD_H */
10371 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/limit.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit.h
10372 --- linux-4.9.76/include/linux/vserver/limit.h  1970-01-01 00:00:00.000000000 +0000
10373 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit.h        2018-01-10 02:50:49.000000000 +0000
10374 @@ -0,0 +1,67 @@
10375 +#ifndef _VSERVER_LIMIT_H
10376 +#define _VSERVER_LIMIT_H
10377 +
10378 +#include <uapi/vserver/limit.h>
10379 +
10380 +
10381 +#define        VLIM_NOCHECK    ((1L << VLIMIT_DENTRY) | (1L << RLIMIT_RSS))
10382 +
10383 +/*     keep in sync with CRLIM_INFINITY */
10384 +
10385 +#define        VLIM_INFINITY   (~0ULL)
10386 +
10387 +#include <asm/atomic.h>
10388 +#include <asm/resource.h>
10389 +
10390 +#ifndef RLIM_INFINITY
10391 +#warning RLIM_INFINITY is undefined
10392 +#endif
10393 +
10394 +#define __rlim_val(l, r, v)    ((l)->res[r].v)
10395 +
10396 +#define __rlim_soft(l, r)      __rlim_val(l, r, soft)
10397 +#define __rlim_hard(l, r)      __rlim_val(l, r, hard)
10398 +
10399 +#define __rlim_rcur(l, r)      __rlim_val(l, r, rcur)
10400 +#define __rlim_rmin(l, r)      __rlim_val(l, r, rmin)
10401 +#define __rlim_rmax(l, r)      __rlim_val(l, r, rmax)
10402 +
10403 +#define __rlim_lhit(l, r)      __rlim_val(l, r, lhit)
10404 +#define __rlim_hit(l, r)       atomic_inc(&__rlim_lhit(l, r))
10405 +
10406 +typedef atomic_long_t rlim_atomic_t;
10407 +typedef unsigned long rlim_t;
10408 +
10409 +#define __rlim_get(l, r)       atomic_long_read(&__rlim_rcur(l, r))
10410 +#define __rlim_set(l, r, v)    atomic_long_set(&__rlim_rcur(l, r), v)
10411 +#define __rlim_inc(l, r)       atomic_long_inc(&__rlim_rcur(l, r))
10412 +#define __rlim_dec(l, r)       atomic_long_dec(&__rlim_rcur(l, r))
10413 +#define __rlim_add(l, r, v)    atomic_long_add(v, &__rlim_rcur(l, r))
10414 +#define __rlim_sub(l, r, v)    atomic_long_sub(v, &__rlim_rcur(l, r))
10415 +
10416 +
10417 +#if    (RLIM_INFINITY == VLIM_INFINITY)
10418 +#define        VX_VLIM(r) ((long long)(long)(r))
10419 +#define        VX_RLIM(v) ((rlim_t)(v))
10420 +#else
10421 +#define        VX_VLIM(r) (((r) == RLIM_INFINITY) \
10422 +               ? VLIM_INFINITY : (long long)(r))
10423 +#define        VX_RLIM(v) (((v) == VLIM_INFINITY) \
10424 +               ? RLIM_INFINITY : (rlim_t)(v))
10425 +#endif
10426 +
10427 +struct sysinfo;
10428 +
10429 +#ifdef CONFIG_MEMCG
10430 +void vx_vsi_meminfo(struct sysinfo *);
10431 +void vx_vsi_swapinfo(struct sysinfo *);
10432 +long vx_vsi_cached(struct sysinfo *);
10433 +#else  /* !CONFIG_MEMCG */
10434 +#define vx_vsi_meminfo(s) do { } while (0)
10435 +#define vx_vsi_swapinfo(s) do { } while (0)
10436 +#define vx_vsi_cached(s) (0L)
10437 +#endif /* !CONFIG_MEMCG */
10438 +
10439 +#define NUM_LIMITS     24
10440 +
10441 +#endif /* _VSERVER_LIMIT_H */
10442 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/limit_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit_cmd.h
10443 --- linux-4.9.76/include/linux/vserver/limit_cmd.h      1970-01-01 00:00:00.000000000 +0000
10444 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit_cmd.h    2018-01-10 02:50:49.000000000 +0000
10445 @@ -0,0 +1,35 @@
10446 +#ifndef _VSERVER_LIMIT_CMD_H
10447 +#define _VSERVER_LIMIT_CMD_H
10448 +
10449 +#include <uapi/vserver/limit_cmd.h>
10450 +
10451 +
10452 +#ifdef CONFIG_IA32_EMULATION
10453 +
10454 +struct vcmd_ctx_rlimit_v0_x32 {
10455 +       uint32_t id;
10456 +       uint64_t minimum;
10457 +       uint64_t softlimit;
10458 +       uint64_t maximum;
10459 +} __attribute__ ((packed));
10460 +
10461 +#endif /* CONFIG_IA32_EMULATION */
10462 +
10463 +#include <linux/compiler.h>
10464 +
10465 +extern int vc_get_rlimit_mask(uint32_t, void __user *);
10466 +extern int vc_get_rlimit(struct vx_info *, void __user *);
10467 +extern int vc_set_rlimit(struct vx_info *, void __user *);
10468 +extern int vc_reset_hits(struct vx_info *, void __user *);
10469 +extern int vc_reset_minmax(struct vx_info *, void __user *);
10470 +
10471 +extern int vc_rlimit_stat(struct vx_info *, void __user *);
10472 +
10473 +#ifdef CONFIG_IA32_EMULATION
10474 +
10475 +extern int vc_get_rlimit_x32(struct vx_info *, void __user *);
10476 +extern int vc_set_rlimit_x32(struct vx_info *, void __user *);
10477 +
10478 +#endif /* CONFIG_IA32_EMULATION */
10479 +
10480 +#endif /* _VSERVER_LIMIT_CMD_H */
10481 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/limit_def.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit_def.h
10482 --- linux-4.9.76/include/linux/vserver/limit_def.h      1970-01-01 00:00:00.000000000 +0000
10483 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit_def.h    2018-01-10 02:50:49.000000000 +0000
10484 @@ -0,0 +1,47 @@
10485 +#ifndef _VSERVER_LIMIT_DEF_H
10486 +#define _VSERVER_LIMIT_DEF_H
10487 +
10488 +#include <asm/atomic.h>
10489 +#include <asm/resource.h>
10490 +
10491 +#include "limit.h"
10492 +
10493 +
10494 +struct _vx_res_limit {
10495 +       rlim_t soft;            /* Context soft limit */
10496 +       rlim_t hard;            /* Context hard limit */
10497 +
10498 +       rlim_atomic_t rcur;     /* Current value */
10499 +       rlim_t rmin;            /* Context minimum */
10500 +       rlim_t rmax;            /* Context maximum */
10501 +
10502 +       atomic_t lhit;          /* Limit hits */
10503 +};
10504 +
10505 +/* context sub struct */
10506 +
10507 +struct _vx_limit {
10508 +       struct _vx_res_limit res[NUM_LIMITS];
10509 +};
10510 +
10511 +#ifdef CONFIG_VSERVER_DEBUG
10512 +
10513 +static inline void __dump_vx_limit(struct _vx_limit *limit)
10514 +{
10515 +       int i;
10516 +
10517 +       printk("\t_vx_limit:");
10518 +       for (i = 0; i < NUM_LIMITS; i++) {
10519 +               printk("\t [%2d] = %8lu %8lu/%8lu, %8ld/%8ld, %8d\n",
10520 +                       i, (unsigned long)__rlim_get(limit, i),
10521 +                       (unsigned long)__rlim_rmin(limit, i),
10522 +                       (unsigned long)__rlim_rmax(limit, i),
10523 +                       (long)__rlim_soft(limit, i),
10524 +                       (long)__rlim_hard(limit, i),
10525 +                       atomic_read(&__rlim_lhit(limit, i)));
10526 +       }
10527 +}
10528 +
10529 +#endif
10530 +
10531 +#endif /* _VSERVER_LIMIT_DEF_H */
10532 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/limit_int.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit_int.h
10533 --- linux-4.9.76/include/linux/vserver/limit_int.h      1970-01-01 00:00:00.000000000 +0000
10534 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/limit_int.h    2018-01-10 02:50:49.000000000 +0000
10535 @@ -0,0 +1,193 @@
10536 +#ifndef _VSERVER_LIMIT_INT_H
10537 +#define _VSERVER_LIMIT_INT_H
10538 +
10539 +#define VXD_RCRES_COND(r)      VXD_CBIT(cres, r)
10540 +#define VXD_RLIMIT_COND(r)     VXD_CBIT(limit, r)
10541 +
10542 +extern const char *vlimit_name[NUM_LIMITS];
10543 +
10544 +static inline void __vx_acc_cres(struct vx_info *vxi,
10545 +       int res, int dir, void *_data, char *_file, int _line)
10546 +{
10547 +       if (VXD_RCRES_COND(res))
10548 +               vxlprintk(1, "vx_acc_cres[%5d,%s,%2d]: %5ld%s (%p)",
10549 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10550 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10551 +                       (dir > 0) ? "++" : "--", _data, _file, _line);
10552 +       if (!vxi)
10553 +               return;
10554 +
10555 +       if (dir > 0)
10556 +               __rlim_inc(&vxi->limit, res);
10557 +       else
10558 +               __rlim_dec(&vxi->limit, res);
10559 +}
10560 +
10561 +static inline void __vx_add_cres(struct vx_info *vxi,
10562 +       int res, int amount, void *_data, char *_file, int _line)
10563 +{
10564 +       if (VXD_RCRES_COND(res))
10565 +               vxlprintk(1, "vx_add_cres[%5d,%s,%2d]: %5ld += %5d (%p)",
10566 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10567 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10568 +                       amount, _data, _file, _line);
10569 +       if (amount == 0)
10570 +               return;
10571 +       if (!vxi)
10572 +               return;
10573 +       __rlim_add(&vxi->limit, res, amount);
10574 +}
10575 +
10576 +static inline
10577 +int __vx_cres_adjust_max(struct _vx_limit *limit, int res, rlim_t value)
10578 +{
10579 +       int cond = (value > __rlim_rmax(limit, res));
10580 +
10581 +       if (cond)
10582 +               __rlim_rmax(limit, res) = value;
10583 +       return cond;
10584 +}
10585 +
10586 +static inline
10587 +int __vx_cres_adjust_min(struct _vx_limit *limit, int res, rlim_t value)
10588 +{
10589 +       int cond = (value < __rlim_rmin(limit, res));
10590 +
10591 +       if (cond)
10592 +               __rlim_rmin(limit, res) = value;
10593 +       return cond;
10594 +}
10595 +
10596 +static inline
10597 +void __vx_cres_fixup(struct _vx_limit *limit, int res, rlim_t value)
10598 +{
10599 +       if (!__vx_cres_adjust_max(limit, res, value))
10600 +               __vx_cres_adjust_min(limit, res, value);
10601 +}
10602 +
10603 +
10604 +/*     return values:
10605 +        +1 ... no limit hit
10606 +        -1 ... over soft limit
10607 +         0 ... over hard limit         */
10608 +
10609 +static inline int __vx_cres_avail(struct vx_info *vxi,
10610 +       int res, int num, char *_file, int _line)
10611 +{
10612 +       struct _vx_limit *limit;
10613 +       rlim_t value;
10614 +
10615 +       if (VXD_RLIMIT_COND(res))
10616 +               vxlprintk(1, "vx_cres_avail[%5d,%s,%2d]: %5ld/%5ld > %5ld + %5d",
10617 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10618 +                       (vxi ? (long)__rlim_soft(&vxi->limit, res) : -1),
10619 +                       (vxi ? (long)__rlim_hard(&vxi->limit, res) : -1),
10620 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10621 +                       num, _file, _line);
10622 +       if (!vxi)
10623 +               return 1;
10624 +
10625 +       limit = &vxi->limit;
10626 +       value = __rlim_get(limit, res);
10627 +
10628 +       if (!__vx_cres_adjust_max(limit, res, value))
10629 +               __vx_cres_adjust_min(limit, res, value);
10630 +
10631 +       if (num == 0)
10632 +               return 1;
10633 +
10634 +       if (__rlim_soft(limit, res) == RLIM_INFINITY)
10635 +               return -1;
10636 +       if (value + num <= __rlim_soft(limit, res))
10637 +               return -1;
10638 +
10639 +       if (__rlim_hard(limit, res) == RLIM_INFINITY)
10640 +               return 1;
10641 +       if (value + num <= __rlim_hard(limit, res))
10642 +               return 1;
10643 +
10644 +       __rlim_hit(limit, res);
10645 +       return 0;
10646 +}
10647 +
10648 +
10649 +static const int VLA_RSS[] = { RLIMIT_RSS, VLIMIT_ANON, VLIMIT_MAPPED, 0 };
10650 +
10651 +static inline
10652 +rlim_t __vx_cres_array_sum(struct _vx_limit *limit, const int *array)
10653 +{
10654 +       rlim_t value, sum = 0;
10655 +       int res;
10656 +
10657 +       while ((res = *array++)) {
10658 +               value = __rlim_get(limit, res);
10659 +               __vx_cres_fixup(limit, res, value);
10660 +               sum += value;
10661 +       }
10662 +       return sum;
10663 +}
10664 +
10665 +static inline
10666 +rlim_t __vx_cres_array_fixup(struct _vx_limit *limit, const int *array)
10667 +{
10668 +       rlim_t value = __vx_cres_array_sum(limit, array + 1);
10669 +       int res = *array;
10670 +
10671 +       if (value == __rlim_get(limit, res))
10672 +               return value;
10673 +
10674 +       __rlim_set(limit, res, value);
10675 +       /* now adjust min/max */
10676 +       if (!__vx_cres_adjust_max(limit, res, value))
10677 +               __vx_cres_adjust_min(limit, res, value);
10678 +
10679 +       return value;
10680 +}
10681 +
10682 +static inline int __vx_cres_array_avail(struct vx_info *vxi,
10683 +       const int *array, int num, char *_file, int _line)
10684 +{
10685 +       struct _vx_limit *limit;
10686 +       rlim_t value = 0;
10687 +       int res;
10688 +
10689 +       if (num == 0)
10690 +               return 1;
10691 +       if (!vxi)
10692 +               return 1;
10693 +
10694 +       limit = &vxi->limit;
10695 +       res = *array;
10696 +       value = __vx_cres_array_sum(limit, array + 1);
10697 +
10698 +       __rlim_set(limit, res, value);
10699 +       __vx_cres_fixup(limit, res, value);
10700 +
10701 +       return __vx_cres_avail(vxi, res, num, _file, _line);
10702 +}
10703 +
10704 +
10705 +static inline void vx_limit_fixup(struct _vx_limit *limit, int id)
10706 +{
10707 +       rlim_t value;
10708 +       int res;
10709 +
10710 +       /* complex resources first */
10711 +       if ((id < 0) || (id == RLIMIT_RSS))
10712 +               __vx_cres_array_fixup(limit, VLA_RSS);
10713 +
10714 +       for (res = 0; res < NUM_LIMITS; res++) {
10715 +               if ((id > 0) && (res != id))
10716 +                       continue;
10717 +
10718 +               value = __rlim_get(limit, res);
10719 +               __vx_cres_fixup(limit, res, value);
10720 +
10721 +               /* not supposed to happen, maybe warn? */
10722 +               if (__rlim_rmax(limit, res) > __rlim_hard(limit, res))
10723 +                       __rlim_rmax(limit, res) = __rlim_hard(limit, res);
10724 +       }
10725 +}
10726 +
10727 +
10728 +#endif /* _VSERVER_LIMIT_INT_H */
10729 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/monitor.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/monitor.h
10730 --- linux-4.9.76/include/linux/vserver/monitor.h        1970-01-01 00:00:00.000000000 +0000
10731 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/monitor.h      2018-01-10 02:50:49.000000000 +0000
10732 @@ -0,0 +1,6 @@
10733 +#ifndef _VSERVER_MONITOR_H
10734 +#define _VSERVER_MONITOR_H
10735 +
10736 +#include <uapi/vserver/monitor.h>
10737 +
10738 +#endif /* _VSERVER_MONITOR_H */
10739 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/network.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/network.h
10740 --- linux-4.9.76/include/linux/vserver/network.h        1970-01-01 00:00:00.000000000 +0000
10741 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/network.h      2018-01-10 02:50:49.000000000 +0000
10742 @@ -0,0 +1,76 @@
10743 +#ifndef _VSERVER_NETWORK_H
10744 +#define _VSERVER_NETWORK_H
10745 +
10746 +
10747 +#include <linux/list.h>
10748 +#include <linux/spinlock.h>
10749 +#include <linux/rcupdate.h>
10750 +#include <linux/in.h>
10751 +#include <linux/in6.h>
10752 +#include <asm/atomic.h>
10753 +#include <uapi/vserver/network.h>
10754 +
10755 +struct nx_addr_v4 {
10756 +       struct nx_addr_v4 *next;
10757 +       struct in_addr ip[2];
10758 +       struct in_addr mask;
10759 +       uint16_t type;
10760 +       uint16_t flags;
10761 +};
10762 +
10763 +struct nx_addr_v6 {
10764 +       struct nx_addr_v6 *next;
10765 +       struct in6_addr ip;
10766 +       struct in6_addr mask;
10767 +       uint32_t prefix;
10768 +       uint16_t type;
10769 +       uint16_t flags;
10770 +};
10771 +
10772 +struct nx_info {
10773 +       struct hlist_node nx_hlist;     /* linked list of nxinfos */
10774 +       vnid_t nx_id;                   /* vnet id */
10775 +       atomic_t nx_usecnt;             /* usage count */
10776 +       atomic_t nx_tasks;              /* tasks count */
10777 +       int nx_state;                   /* context state */
10778 +
10779 +       uint64_t nx_flags;              /* network flag word */
10780 +       uint64_t nx_ncaps;              /* network capabilities */
10781 +
10782 +       spinlock_t addr_lock;           /* protect address changes */
10783 +       struct in_addr v4_lback;        /* Loopback address */
10784 +       struct in_addr v4_bcast;        /* Broadcast address */
10785 +       struct nx_addr_v4 v4;           /* First/Single ipv4 address */
10786 +#ifdef CONFIG_IPV6
10787 +       struct nx_addr_v6 v6;           /* First/Single ipv6 address */
10788 +#endif
10789 +       char nx_name[65];               /* network context name */
10790 +};
10791 +
10792 +
10793 +/* status flags */
10794 +
10795 +#define NXS_HASHED      0x0001
10796 +#define NXS_SHUTDOWN    0x0100
10797 +#define NXS_RELEASED    0x8000
10798 +
10799 +extern struct nx_info *lookup_nx_info(int);
10800 +
10801 +extern int get_nid_list(int, unsigned int *, int);
10802 +extern int nid_is_hashed(vnid_t);
10803 +
10804 +extern int nx_migrate_task(struct task_struct *, struct nx_info *);
10805 +
10806 +extern long vs_net_change(struct nx_info *, unsigned int);
10807 +
10808 +struct sock;
10809 +
10810 +
10811 +#define NX_IPV4(n)     ((n)->v4.type != NXA_TYPE_NONE)
10812 +#ifdef  CONFIG_IPV6
10813 +#define NX_IPV6(n)     ((n)->v6.type != NXA_TYPE_NONE)
10814 +#else
10815 +#define NX_IPV6(n)     (0)
10816 +#endif
10817 +
10818 +#endif /* _VSERVER_NETWORK_H */
10819 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/network_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/network_cmd.h
10820 --- linux-4.9.76/include/linux/vserver/network_cmd.h    1970-01-01 00:00:00.000000000 +0000
10821 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/network_cmd.h  2018-01-10 02:50:49.000000000 +0000
10822 @@ -0,0 +1,37 @@
10823 +#ifndef _VSERVER_NETWORK_CMD_H
10824 +#define _VSERVER_NETWORK_CMD_H
10825 +
10826 +#include <uapi/vserver/network_cmd.h>
10827 +
10828 +extern int vc_task_nid(uint32_t);
10829 +
10830 +extern int vc_nx_info(struct nx_info *, void __user *);
10831 +
10832 +extern int vc_net_create(uint32_t, void __user *);
10833 +extern int vc_net_migrate(struct nx_info *, void __user *);
10834 +
10835 +extern int vc_net_add(struct nx_info *, void __user *);
10836 +extern int vc_net_remove(struct nx_info *, void __user *);
10837 +
10838 +extern int vc_net_add_ipv4_v1(struct nx_info *, void __user *);
10839 +extern int vc_net_add_ipv4(struct nx_info *, void __user *);
10840 +
10841 +extern int vc_net_rem_ipv4_v1(struct nx_info *, void __user *);
10842 +extern int vc_net_rem_ipv4(struct nx_info *, void __user *);
10843 +
10844 +extern int vc_net_add_ipv6(struct nx_info *, void __user *);
10845 +extern int vc_net_remove_ipv6(struct nx_info *, void __user *);
10846 +
10847 +extern int vc_add_match_ipv4(struct nx_info *, void __user *);
10848 +extern int vc_get_match_ipv4(struct nx_info *, void __user *);
10849 +
10850 +extern int vc_add_match_ipv6(struct nx_info *, void __user *);
10851 +extern int vc_get_match_ipv6(struct nx_info *, void __user *);
10852 +
10853 +extern int vc_get_nflags(struct nx_info *, void __user *);
10854 +extern int vc_set_nflags(struct nx_info *, void __user *);
10855 +
10856 +extern int vc_get_ncaps(struct nx_info *, void __user *);
10857 +extern int vc_set_ncaps(struct nx_info *, void __user *);
10858 +
10859 +#endif /* _VSERVER_CONTEXT_CMD_H */
10860 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/percpu.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/percpu.h
10861 --- linux-4.9.76/include/linux/vserver/percpu.h 1970-01-01 00:00:00.000000000 +0000
10862 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/percpu.h       2018-01-10 02:50:49.000000000 +0000
10863 @@ -0,0 +1,14 @@
10864 +#ifndef _VSERVER_PERCPU_H
10865 +#define _VSERVER_PERCPU_H
10866 +
10867 +#include "cvirt_def.h"
10868 +#include "sched_def.h"
10869 +
10870 +struct _vx_percpu {
10871 +       struct _vx_cvirt_pc cvirt;
10872 +       struct _vx_sched_pc sched;
10873 +};
10874 +
10875 +#define        PERCPU_PERCTX   (sizeof(struct _vx_percpu))
10876 +
10877 +#endif /* _VSERVER_PERCPU_H */
10878 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/pid.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/pid.h
10879 --- linux-4.9.76/include/linux/vserver/pid.h    1970-01-01 00:00:00.000000000 +0000
10880 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/pid.h  2018-01-10 02:50:49.000000000 +0000
10881 @@ -0,0 +1,51 @@
10882 +#ifndef _VSERVER_PID_H
10883 +#define _VSERVER_PID_H
10884 +
10885 +/* pid faking stuff */
10886 +
10887 +#define vx_info_map_pid(v, p) \
10888 +       __vx_info_map_pid((v), (p), __func__, __FILE__, __LINE__)
10889 +#define vx_info_map_tgid(v,p)  vx_info_map_pid(v,p)
10890 +#define vx_map_pid(p) vx_info_map_pid(current_vx_info(), p)
10891 +#define vx_map_tgid(p) vx_map_pid(p)
10892 +
10893 +static inline int __vx_info_map_pid(struct vx_info *vxi, int pid,
10894 +       const char *func, const char *file, int line)
10895 +{
10896 +       if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
10897 +               vxfprintk(VXD_CBIT(cvirt, 2),
10898 +                       "vx_map_tgid: %p/%llx: %d -> %d",
10899 +                       vxi, (long long)vxi->vx_flags, pid,
10900 +                       (pid && pid == vxi->vx_initpid) ? 1 : pid,
10901 +                       func, file, line);
10902 +               if (pid == 0)
10903 +                       return 0;
10904 +               if (pid == vxi->vx_initpid)
10905 +                       return 1;
10906 +       }
10907 +       return pid;
10908 +}
10909 +
10910 +#define vx_info_rmap_pid(v, p) \
10911 +       __vx_info_rmap_pid((v), (p), __func__, __FILE__, __LINE__)
10912 +#define vx_rmap_pid(p) vx_info_rmap_pid(current_vx_info(), p)
10913 +#define vx_rmap_tgid(p) vx_rmap_pid(p)
10914 +
10915 +static inline int __vx_info_rmap_pid(struct vx_info *vxi, int pid,
10916 +       const char *func, const char *file, int line)
10917 +{
10918 +       if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
10919 +               vxfprintk(VXD_CBIT(cvirt, 2),
10920 +                       "vx_rmap_tgid: %p/%llx: %d -> %d",
10921 +                       vxi, (long long)vxi->vx_flags, pid,
10922 +                       (pid == 1) ? vxi->vx_initpid : pid,
10923 +                       func, file, line);
10924 +               if ((pid == 1) && vxi->vx_initpid)
10925 +                       return vxi->vx_initpid;
10926 +               if (pid == vxi->vx_initpid)
10927 +                       return ~0U;
10928 +       }
10929 +       return pid;
10930 +}
10931 +
10932 +#endif
10933 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/sched.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/sched.h
10934 --- linux-4.9.76/include/linux/vserver/sched.h  1970-01-01 00:00:00.000000000 +0000
10935 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/sched.h        2018-01-10 02:50:49.000000000 +0000
10936 @@ -0,0 +1,23 @@
10937 +#ifndef _VSERVER_SCHED_H
10938 +#define _VSERVER_SCHED_H
10939 +
10940 +
10941 +#ifdef __KERNEL__
10942 +
10943 +struct timespec;
10944 +
10945 +void vx_vsi_uptime(struct timespec *, struct timespec *);
10946 +
10947 +
10948 +struct vx_info;
10949 +
10950 +void vx_update_load(struct vx_info *);
10951 +
10952 +
10953 +void vx_update_sched_param(struct _vx_sched *sched,
10954 +       struct _vx_sched_pc *sched_pc);
10955 +
10956 +#endif /* __KERNEL__ */
10957 +#else  /* _VSERVER_SCHED_H */
10958 +#warning duplicate inclusion
10959 +#endif /* _VSERVER_SCHED_H */
10960 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/sched_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/sched_cmd.h
10961 --- linux-4.9.76/include/linux/vserver/sched_cmd.h      1970-01-01 00:00:00.000000000 +0000
10962 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/sched_cmd.h    2018-01-10 02:50:49.000000000 +0000
10963 @@ -0,0 +1,11 @@
10964 +#ifndef _VSERVER_SCHED_CMD_H
10965 +#define _VSERVER_SCHED_CMD_H
10966 +
10967 +
10968 +#include <linux/compiler.h>
10969 +#include <uapi/vserver/sched_cmd.h>
10970 +
10971 +extern int vc_set_prio_bias(struct vx_info *, void __user *);
10972 +extern int vc_get_prio_bias(struct vx_info *, void __user *);
10973 +
10974 +#endif /* _VSERVER_SCHED_CMD_H */
10975 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/sched_def.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/sched_def.h
10976 --- linux-4.9.76/include/linux/vserver/sched_def.h      1970-01-01 00:00:00.000000000 +0000
10977 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/sched_def.h    2018-01-10 02:50:49.000000000 +0000
10978 @@ -0,0 +1,38 @@
10979 +#ifndef _VSERVER_SCHED_DEF_H
10980 +#define _VSERVER_SCHED_DEF_H
10981 +
10982 +#include <linux/spinlock.h>
10983 +#include <linux/jiffies.h>
10984 +#include <linux/cpumask.h>
10985 +#include <asm/atomic.h>
10986 +#include <asm/param.h>
10987 +
10988 +
10989 +/* context sub struct */
10990 +
10991 +struct _vx_sched {
10992 +       int prio_bias;                  /* bias offset for priority */
10993 +
10994 +       cpumask_t update;               /* CPUs which should update */
10995 +};
10996 +
10997 +struct _vx_sched_pc {
10998 +       int prio_bias;                  /* bias offset for priority */
10999 +
11000 +       uint64_t user_ticks;            /* token tick events */
11001 +       uint64_t sys_ticks;             /* token tick events */
11002 +       uint64_t hold_ticks;            /* token ticks paused */
11003 +};
11004 +
11005 +
11006 +#ifdef CONFIG_VSERVER_DEBUG
11007 +
11008 +static inline void __dump_vx_sched(struct _vx_sched *sched)
11009 +{
11010 +       printk("\t_vx_sched:\n");
11011 +       printk("\t priority = %4d\n", sched->prio_bias);
11012 +}
11013 +
11014 +#endif
11015 +
11016 +#endif /* _VSERVER_SCHED_DEF_H */
11017 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/signal.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/signal.h
11018 --- linux-4.9.76/include/linux/vserver/signal.h 1970-01-01 00:00:00.000000000 +0000
11019 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/signal.h       2018-01-10 02:50:49.000000000 +0000
11020 @@ -0,0 +1,14 @@
11021 +#ifndef _VSERVER_SIGNAL_H
11022 +#define _VSERVER_SIGNAL_H
11023 +
11024 +
11025 +#ifdef __KERNEL__
11026 +
11027 +struct vx_info;
11028 +
11029 +int vx_info_kill(struct vx_info *, int, int);
11030 +
11031 +#endif /* __KERNEL__ */
11032 +#else  /* _VSERVER_SIGNAL_H */
11033 +#warning duplicate inclusion
11034 +#endif /* _VSERVER_SIGNAL_H */
11035 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/signal_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/signal_cmd.h
11036 --- linux-4.9.76/include/linux/vserver/signal_cmd.h     1970-01-01 00:00:00.000000000 +0000
11037 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/signal_cmd.h   2018-01-10 02:50:49.000000000 +0000
11038 @@ -0,0 +1,14 @@
11039 +#ifndef _VSERVER_SIGNAL_CMD_H
11040 +#define _VSERVER_SIGNAL_CMD_H
11041 +
11042 +#include <uapi/vserver/signal_cmd.h>
11043 +
11044 +
11045 +extern int vc_ctx_kill(struct vx_info *, void __user *);
11046 +extern int vc_wait_exit(struct vx_info *, void __user *);
11047 +
11048 +
11049 +extern int vc_get_pflags(uint32_t pid, void __user *);
11050 +extern int vc_set_pflags(uint32_t pid, void __user *);
11051 +
11052 +#endif /* _VSERVER_SIGNAL_CMD_H */
11053 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/space.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/space.h
11054 --- linux-4.9.76/include/linux/vserver/space.h  1970-01-01 00:00:00.000000000 +0000
11055 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/space.h        2018-01-10 02:50:49.000000000 +0000
11056 @@ -0,0 +1,12 @@
11057 +#ifndef _VSERVER_SPACE_H
11058 +#define _VSERVER_SPACE_H
11059 +
11060 +#include <linux/types.h>
11061 +
11062 +struct vx_info;
11063 +
11064 +int vx_set_space(struct vx_info *vxi, unsigned long mask, unsigned index);
11065 +
11066 +#else  /* _VSERVER_SPACE_H */
11067 +#warning duplicate inclusion
11068 +#endif /* _VSERVER_SPACE_H */
11069 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/space_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/space_cmd.h
11070 --- linux-4.9.76/include/linux/vserver/space_cmd.h      1970-01-01 00:00:00.000000000 +0000
11071 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/space_cmd.h    2018-01-10 02:50:49.000000000 +0000
11072 @@ -0,0 +1,13 @@
11073 +#ifndef _VSERVER_SPACE_CMD_H
11074 +#define _VSERVER_SPACE_CMD_H
11075 +
11076 +#include <uapi/vserver/space_cmd.h>
11077 +
11078 +
11079 +extern int vc_enter_space_v1(struct vx_info *, void __user *);
11080 +extern int vc_set_space_v1(struct vx_info *, void __user *);
11081 +extern int vc_enter_space(struct vx_info *, void __user *);
11082 +extern int vc_set_space(struct vx_info *, void __user *);
11083 +extern int vc_get_space_mask(void __user *, int);
11084 +
11085 +#endif /* _VSERVER_SPACE_CMD_H */
11086 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/switch.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/switch.h
11087 --- linux-4.9.76/include/linux/vserver/switch.h 1970-01-01 00:00:00.000000000 +0000
11088 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/switch.h       2018-01-10 02:50:49.000000000 +0000
11089 @@ -0,0 +1,8 @@
11090 +#ifndef _VSERVER_SWITCH_H
11091 +#define _VSERVER_SWITCH_H
11092 +
11093 +
11094 +#include <linux/errno.h>
11095 +#include <uapi/vserver/switch.h>
11096 +
11097 +#endif /* _VSERVER_SWITCH_H */
11098 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/tag.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/tag.h
11099 --- linux-4.9.76/include/linux/vserver/tag.h    1970-01-01 00:00:00.000000000 +0000
11100 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/tag.h  2018-01-10 02:50:49.000000000 +0000
11101 @@ -0,0 +1,160 @@
11102 +#ifndef _DX_TAG_H
11103 +#define _DX_TAG_H
11104 +
11105 +#include <linux/types.h>
11106 +#include <linux/uidgid.h>
11107 +
11108 +
11109 +#define DX_TAG(in)     (IS_TAGGED(in))
11110 +
11111 +
11112 +#ifdef CONFIG_TAG_NFSD
11113 +#define DX_TAG_NFSD    1
11114 +#else
11115 +#define DX_TAG_NFSD    0
11116 +#endif
11117 +
11118 +
11119 +#ifdef CONFIG_TAGGING_NONE
11120 +
11121 +#define MAX_UID                0xFFFFFFFF
11122 +#define MAX_GID                0xFFFFFFFF
11123 +
11124 +#define INOTAG_TAG(cond, uid, gid, tag)        (0)
11125 +
11126 +#define TAGINO_UID(cond, uid, tag)     (uid)
11127 +#define TAGINO_GID(cond, gid, tag)     (gid)
11128 +
11129 +#endif
11130 +
11131 +
11132 +#ifdef CONFIG_TAGGING_GID16
11133 +
11134 +#define MAX_UID                0xFFFFFFFF
11135 +#define MAX_GID                0x0000FFFF
11136 +
11137 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11138 +       ((cond) ? (((gid) >> 16) & 0xFFFF) : 0)
11139 +
11140 +#define TAGINO_UID(cond, uid, tag)     (uid)
11141 +#define TAGINO_GID(cond, gid, tag)     \
11142 +       ((cond) ? (((gid) & 0xFFFF) | ((tag) << 16)) : (gid))
11143 +
11144 +#endif
11145 +
11146 +
11147 +#ifdef CONFIG_TAGGING_ID24
11148 +
11149 +#define MAX_UID                0x00FFFFFF
11150 +#define MAX_GID                0x00FFFFFF
11151 +
11152 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11153 +       ((cond) ? ((((uid) >> 16) & 0xFF00) | (((gid) >> 24) & 0xFF)) : 0)
11154 +
11155 +#define TAGINO_UID(cond, uid, tag)     \
11156 +       ((cond) ? (((uid) & 0xFFFFFF) | (((tag) & 0xFF00) << 16)) : (uid))
11157 +#define TAGINO_GID(cond, gid, tag)     \
11158 +       ((cond) ? (((gid) & 0xFFFFFF) | (((tag) & 0x00FF) << 24)) : (gid))
11159 +
11160 +#endif
11161 +
11162 +
11163 +#ifdef CONFIG_TAGGING_UID16
11164 +
11165 +#define MAX_UID                0x0000FFFF
11166 +#define MAX_GID                0xFFFFFFFF
11167 +
11168 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11169 +       ((cond) ? (((uid) >> 16) & 0xFFFF) : 0)
11170 +
11171 +#define TAGINO_UID(cond, uid, tag)     \
11172 +       ((cond) ? (((uid) & 0xFFFF) | ((tag) << 16)) : (uid))
11173 +#define TAGINO_GID(cond, gid, tag)     (gid)
11174 +
11175 +#endif
11176 +
11177 +
11178 +#ifdef CONFIG_TAGGING_INTERN
11179 +
11180 +#define MAX_UID                0xFFFFFFFF
11181 +#define MAX_GID                0xFFFFFFFF
11182 +
11183 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11184 +       ((cond) ? (tag) : 0)
11185 +
11186 +#define TAGINO_UID(cond, uid, tag)     (uid)
11187 +#define TAGINO_GID(cond, gid, tag)     (gid)
11188 +
11189 +#endif
11190 +
11191 +
11192 +#ifndef CONFIG_TAGGING_NONE
11193 +#define dx_current_fstag(sb)   \
11194 +       ((sb)->s_flags & MS_TAGGED ? dx_current_tag() : 0)
11195 +#else
11196 +#define dx_current_fstag(sb)   (0)
11197 +#endif
11198 +
11199 +#ifndef CONFIG_TAGGING_INTERN
11200 +#define TAGINO_TAG(cond, tag)  (0)
11201 +#else
11202 +#define TAGINO_TAG(cond, tag)  ((cond) ? (tag) : 0)
11203 +#endif
11204 +
11205 +#define TAGINO_KUID(cond, kuid, ktag)  \
11206 +       KUIDT_INIT(TAGINO_UID(cond, __kuid_val(kuid), __ktag_val(ktag)))
11207 +#define TAGINO_KGID(cond, kgid, ktag)  \
11208 +       KGIDT_INIT(TAGINO_GID(cond, __kgid_val(kgid), __ktag_val(ktag)))
11209 +#define TAGINO_KTAG(cond, ktag)                \
11210 +       KTAGT_INIT(TAGINO_TAG(cond, __ktag_val(ktag)))
11211 +
11212 +
11213 +#define INOTAG_UID(cond, uid, gid)     \
11214 +       ((cond) ? ((uid) & MAX_UID) : (uid))
11215 +#define INOTAG_GID(cond, uid, gid)     \
11216 +       ((cond) ? ((gid) & MAX_GID) : (gid))
11217 +
11218 +#define INOTAG_KUID(cond, kuid, kgid)  \
11219 +       KUIDT_INIT(INOTAG_UID(cond, __kuid_val(kuid), __kgid_val(kgid)))
11220 +#define INOTAG_KGID(cond, kuid, kgid)  \
11221 +       KGIDT_INIT(INOTAG_GID(cond, __kuid_val(kuid), __kgid_val(kgid)))
11222 +#define INOTAG_KTAG(cond, kuid, kgid, ktag) \
11223 +       KTAGT_INIT(INOTAG_TAG(cond, \
11224 +               __kuid_val(kuid), __kgid_val(kgid), __ktag_val(ktag)))
11225 +
11226 +
11227 +static inline uid_t dx_map_uid(uid_t uid)
11228 +{
11229 +       if ((uid > MAX_UID) && (uid != -1))
11230 +               uid = -2;
11231 +       return (uid & MAX_UID);
11232 +}
11233 +
11234 +static inline gid_t dx_map_gid(gid_t gid)
11235 +{
11236 +       if ((gid > MAX_GID) && (gid != -1))
11237 +               gid = -2;
11238 +       return (gid & MAX_GID);
11239 +}
11240 +
11241 +struct peer_tag {
11242 +       int32_t xid;
11243 +       int32_t nid;
11244 +};
11245 +
11246 +#define dx_notagcheck(sb) ((sb) && ((sb)->s_flags & MS_NOTAGCHECK))
11247 +
11248 +int dx_parse_tag(char *string, vtag_t *tag, int remove, int *mnt_flags,
11249 +                unsigned long *flags);
11250 +
11251 +#ifdef CONFIG_PROPAGATE
11252 +
11253 +void __dx_propagate_tag(struct nameidata *nd, struct inode *inode);
11254 +
11255 +#define dx_propagate_tag(n, i) __dx_propagate_tag(n, i)
11256 +
11257 +#else
11258 +#define dx_propagate_tag(n, i) do { } while (0)
11259 +#endif
11260 +
11261 +#endif /* _DX_TAG_H */
11262 diff -NurpP --minimal linux-4.9.76/include/linux/vserver/tag_cmd.h linux-4.9.76-vs2.3.9.5/include/linux/vserver/tag_cmd.h
11263 --- linux-4.9.76/include/linux/vserver/tag_cmd.h        1970-01-01 00:00:00.000000000 +0000
11264 +++ linux-4.9.76-vs2.3.9.5/include/linux/vserver/tag_cmd.h      2018-01-10 02:50:49.000000000 +0000
11265 @@ -0,0 +1,10 @@
11266 +#ifndef _VSERVER_TAG_CMD_H
11267 +#define _VSERVER_TAG_CMD_H
11268 +
11269 +#include <uapi/vserver/tag_cmd.h>
11270 +
11271 +extern int vc_task_tag(uint32_t);
11272 +
11273 +extern int vc_tag_migrate(uint32_t);
11274 +
11275 +#endif /* _VSERVER_TAG_CMD_H */
11276 diff -NurpP --minimal linux-4.9.76/include/net/addrconf.h linux-4.9.76-vs2.3.9.5/include/net/addrconf.h
11277 --- linux-4.9.76/include/net/addrconf.h 2018-01-13 21:29:00.000000000 +0000
11278 +++ linux-4.9.76-vs2.3.9.5/include/net/addrconf.h       2018-01-10 02:50:49.000000000 +0000
11279 @@ -85,7 +85,7 @@ struct inet6_ifaddr *ipv6_get_ifaddr(str
11280
11281  int ipv6_dev_get_saddr(struct net *net, const struct net_device *dev,
11282                        const struct in6_addr *daddr, unsigned int srcprefs,
11283 -                      struct in6_addr *saddr);
11284 +                      struct in6_addr *saddr, struct nx_info *nxi);
11285  int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr,
11286                       u32 banned_flags);
11287  int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
11288 diff -NurpP --minimal linux-4.9.76/include/net/af_unix.h linux-4.9.76-vs2.3.9.5/include/net/af_unix.h
11289 --- linux-4.9.76/include/net/af_unix.h  2016-12-11 19:17:54.000000000 +0000
11290 +++ linux-4.9.76-vs2.3.9.5/include/net/af_unix.h        2018-01-10 02:50:49.000000000 +0000
11291 @@ -4,6 +4,7 @@
11292  #include <linux/socket.h>
11293  #include <linux/un.h>
11294  #include <linux/mutex.h>
11295 +// #include <linux/vs_base.h>
11296  #include <net/sock.h>
11297
11298  void unix_inflight(struct user_struct *user, struct file *fp);
11299 diff -NurpP --minimal linux-4.9.76/include/net/inet_timewait_sock.h linux-4.9.76-vs2.3.9.5/include/net/inet_timewait_sock.h
11300 --- linux-4.9.76/include/net/inet_timewait_sock.h       2016-12-11 19:17:54.000000000 +0000
11301 +++ linux-4.9.76-vs2.3.9.5/include/net/inet_timewait_sock.h     2018-01-10 02:50:49.000000000 +0000
11302 @@ -71,6 +71,10 @@ struct inet_timewait_sock {
11303  #define tw_num                 __tw_common.skc_num
11304  #define tw_cookie              __tw_common.skc_cookie
11305  #define tw_dr                  __tw_common.skc_tw_dr
11306 +#define tw_xid                 __tw_common.skc_xid
11307 +#define tw_vx_info             __tw_common.skc_vx_info
11308 +#define tw_nid                 __tw_common.skc_nid
11309 +#define tw_nx_info             __tw_common.skc_nx_info
11310
11311         int                     tw_timeout;
11312         volatile unsigned char  tw_substate;
11313 diff -NurpP --minimal linux-4.9.76/include/net/ip6_route.h linux-4.9.76-vs2.3.9.5/include/net/ip6_route.h
11314 --- linux-4.9.76/include/net/ip6_route.h        2018-01-13 21:29:00.000000000 +0000
11315 +++ linux-4.9.76-vs2.3.9.5/include/net/ip6_route.h      2018-01-13 06:10:51.000000000 +0000
11316 @@ -26,6 +26,7 @@ struct route_info {
11317  #include <linux/ip.h>
11318  #include <linux/ipv6.h>
11319  #include <linux/route.h>
11320 +#include <linux/vs_inet6.h>
11321
11322  #define RT6_LOOKUP_F_IFACE             0x00000001
11323  #define RT6_LOOKUP_F_REACHABLE         0x00000002
11324 @@ -98,17 +99,19 @@ int ip6_del_rt(struct rt6_info *);
11325  static inline int ip6_route_get_saddr(struct net *net, struct rt6_info *rt,
11326                                       const struct in6_addr *daddr,
11327                                       unsigned int prefs,
11328 -                                     struct in6_addr *saddr)
11329 +                                     struct in6_addr *saddr,
11330 +                                     struct nx_info *nxi)
11331  {
11332         struct inet6_dev *idev =
11333                         rt ? ip6_dst_idev((struct dst_entry *)rt) : NULL;
11334         int err = 0;
11335
11336 -       if (rt && rt->rt6i_prefsrc.plen)
11337 +       if (rt && rt->rt6i_prefsrc.plen && (!nxi ||
11338 +           v6_addr_in_nx_info(nxi, &rt->rt6i_prefsrc.addr, NXA_TYPE_ADDR)))
11339                 *saddr = rt->rt6i_prefsrc.addr;
11340         else
11341                 err = ipv6_dev_get_saddr(net, idev ? idev->dev : NULL,
11342 -                                        daddr, prefs, saddr);
11343 +                                        daddr, prefs, saddr, nxi);
11344
11345         return err;
11346  }
11347 diff -NurpP --minimal linux-4.9.76/include/net/route.h linux-4.9.76-vs2.3.9.5/include/net/route.h
11348 --- linux-4.9.76/include/net/route.h    2016-12-11 19:17:54.000000000 +0000
11349 +++ linux-4.9.76-vs2.3.9.5/include/net/route.h  2018-01-10 07:57:27.000000000 +0000
11350 @@ -225,6 +225,9 @@ static inline void ip_rt_put(struct rtab
11351         dst_release(&rt->dst);
11352  }
11353
11354 +#include <linux/vs_base.h>
11355 +#include <linux/vs_inet.h>
11356 +
11357  #define IPTOS_RT_MASK  (IPTOS_TOS_MASK & ~3)
11358
11359  extern const __u8 ip_tos2prio[16];
11360 @@ -272,6 +275,9 @@ static inline void ip_route_connect_init
11361                            protocol, flow_flags, dst, src, dport, sport);
11362  }
11363
11364 +extern struct rtable *ip_v4_find_src(struct net *net, struct nx_info *,
11365 +       struct flowi4 *);
11366 +
11367  static inline struct rtable *ip_route_connect(struct flowi4 *fl4,
11368                                               __be32 dst, __be32 src, u32 tos,
11369                                               int oif, u8 protocol,
11370 @@ -280,11 +286,25 @@ static inline struct rtable *ip_route_co
11371  {
11372         struct net *net = sock_net(sk);
11373         struct rtable *rt;
11374 +       struct nx_info *nx_info = current_nx_info();
11375
11376         ip_route_connect_init(fl4, dst, src, tos, oif, protocol,
11377                               sport, dport, sk);
11378
11379 -       if (!dst || !src) {
11380 +       if (sk)
11381 +               nx_info = sk->sk_nx_info;
11382 +
11383 +       vxdprintk(VXD_CBIT(net, 4),
11384 +               "ip_route_connect(%p) %p,%p;%lx",
11385 +               sk, nx_info, sk->sk_socket,
11386 +               (sk->sk_socket?sk->sk_socket->flags:0));
11387 +
11388 +       rt = ip_v4_find_src(net, nx_info, fl4);
11389 +       if (IS_ERR(rt))
11390 +               return rt;
11391 +       ip_rt_put(rt);
11392 +
11393 +       if (!fl4->daddr || !fl4->saddr) {
11394                 rt = __ip_route_output_key(net, fl4);
11395                 if (IS_ERR(rt))
11396                         return rt;
11397 diff -NurpP --minimal linux-4.9.76/include/net/sock.h linux-4.9.76-vs2.3.9.5/include/net/sock.h
11398 --- linux-4.9.76/include/net/sock.h     2018-01-13 21:29:00.000000000 +0000
11399 +++ linux-4.9.76-vs2.3.9.5/include/net/sock.h   2018-01-10 02:50:49.000000000 +0000
11400 @@ -187,6 +187,10 @@ struct sock_common {
11401         struct in6_addr         skc_v6_daddr;
11402         struct in6_addr         skc_v6_rcv_saddr;
11403  #endif
11404 +       vxid_t                  skc_xid;
11405 +       struct vx_info          *skc_vx_info;
11406 +       vnid_t                  skc_nid;
11407 +       struct nx_info          *skc_nx_info;
11408
11409         atomic64_t              skc_cookie;
11410
11411 @@ -336,8 +340,12 @@ struct sock {
11412  #define sk_prot                        __sk_common.skc_prot
11413  #define sk_net                 __sk_common.skc_net
11414  #define sk_v6_daddr            __sk_common.skc_v6_daddr
11415 -#define sk_v6_rcv_saddr        __sk_common.skc_v6_rcv_saddr
11416 +#define sk_v6_rcv_saddr                __sk_common.skc_v6_rcv_saddr
11417  #define sk_cookie              __sk_common.skc_cookie
11418 +#define sk_xid                 __sk_common.skc_xid
11419 +#define sk_vx_info             __sk_common.skc_vx_info
11420 +#define sk_nid                 __sk_common.skc_nid
11421 +#define sk_nx_info             __sk_common.skc_nx_info
11422  #define sk_incoming_cpu                __sk_common.skc_incoming_cpu
11423  #define sk_flags               __sk_common.skc_flags
11424  #define sk_rxhash              __sk_common.skc_rxhash
11425 diff -NurpP --minimal linux-4.9.76/include/uapi/Kbuild linux-4.9.76-vs2.3.9.5/include/uapi/Kbuild
11426 --- linux-4.9.76/include/uapi/Kbuild    2016-12-11 19:17:54.000000000 +0000
11427 +++ linux-4.9.76-vs2.3.9.5/include/uapi/Kbuild  2018-01-10 02:50:49.000000000 +0000
11428 @@ -13,3 +13,4 @@ header-y += drm/
11429  header-y += xen/
11430  header-y += scsi/
11431  header-y += misc/
11432 +header-y += vserver/
11433 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/btrfs_tree.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/btrfs_tree.h
11434 --- linux-4.9.76/include/uapi/linux/btrfs_tree.h        2016-12-11 19:17:54.000000000 +0000
11435 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/btrfs_tree.h      2018-01-13 01:45:34.000000000 +0000
11436 @@ -563,11 +563,14 @@ struct btrfs_inode_item {
11437         /* modification sequence number for NFS */
11438         __le64 sequence;
11439
11440 +       __le16 tag;
11441         /*
11442          * a little future expansion, for more than this we can
11443          * just grow the inode item and version it
11444          */
11445 -       __le64 reserved[4];
11446 +       __le16 reserved16;
11447 +       __le32 reserved32;
11448 +       __le64 reserved[3];
11449         struct btrfs_timespec atime;
11450         struct btrfs_timespec ctime;
11451         struct btrfs_timespec mtime;
11452 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/capability.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/capability.h
11453 --- linux-4.9.76/include/uapi/linux/capability.h        2016-12-11 19:17:54.000000000 +0000
11454 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/capability.h      2018-01-10 02:50:49.000000000 +0000
11455 @@ -257,6 +257,7 @@ struct vfs_cap_data {
11456     arbitrary SCSI commands */
11457  /* Allow setting encryption key on loopback filesystem */
11458  /* Allow setting zone reclaim policy */
11459 +/* Allow the selection of a security context */
11460
11461  #define CAP_SYS_ADMIN        21
11462
11463 @@ -352,7 +353,12 @@ struct vfs_cap_data {
11464
11465  #define CAP_LAST_CAP         CAP_AUDIT_READ
11466
11467 -#define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
11468 +/* Allow context manipulations */
11469 +/* Allow changing context info on files */
11470 +
11471 +#define CAP_CONTEXT         63
11472 +
11473 +#define cap_valid(x) ((x) >= 0 && ((x) <= CAP_LAST_CAP || (x) == CAP_CONTEXT))
11474
11475  /*
11476   * Bit location of each capability (used by user-space library and kernel)
11477 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/fs.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/fs.h
11478 --- linux-4.9.76/include/uapi/linux/fs.h        2018-01-13 21:29:00.000000000 +0000
11479 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/fs.h      2018-01-10 08:09:10.000000000 +0000
11480 @@ -130,6 +130,9 @@ struct inodes_stat_t {
11481  #define MS_I_VERSION   (1<<23) /* Update inode I_version field */
11482  #define MS_STRICTATIME (1<<24) /* Always perform atime updates */
11483  #define MS_LAZYTIME    (1<<25) /* Update the on-disk [acm]times lazily */
11484 +#define MS_TAGGED      (1<<8)  /* use generic inode tagging */
11485 +#define MS_NOTAGCHECK  (1<<9)  /* don't check tags */
11486 +#define MS_TAGID       (1<<26) /* use specific tag for this mount */
11487
11488  /* These sb flags are internal to the kernel */
11489  #define MS_SUBMOUNT     (1<<26)
11490 @@ -313,13 +316,16 @@ struct fscrypt_policy {
11491  #define FS_EA_INODE_FL                 0x00200000 /* Inode used for large EA */
11492  #define FS_EOFBLOCKS_FL                        0x00400000 /* Reserved for ext4 */
11493  #define FS_NOCOW_FL                    0x00800000 /* Do not cow file */
11494 +#define FS_IXUNLINK_FL                 0x08000000 /* Immutable invert on unlink */
11495  #define FS_INLINE_DATA_FL              0x10000000 /* Reserved for ext4 */
11496  #define FS_PROJINHERIT_FL              0x20000000 /* Create with parents projid */
11497  #define FS_RESERVED_FL                 0x80000000 /* reserved for ext2 lib */
11498
11499 -#define FS_FL_USER_VISIBLE             0x0003DFFF /* User visible flags */
11500 -#define FS_FL_USER_MODIFIABLE          0x000380FF /* User modifiable flags */
11501 +#define FS_BARRIER_FL                  0x04000000 /* Barrier for chroot() */
11502 +#define FS_COW_FL                      0x20000000 /* Copy on Write marker */
11503
11504 +#define FS_FL_USER_VISIBLE             0x0103DFFF /* User visible flags */
11505 +#define FS_FL_USER_MODIFIABLE          0x010380FF /* User modifiable flags */
11506
11507  #define SYNC_FILE_RANGE_WAIT_BEFORE    1
11508  #define SYNC_FILE_RANGE_WRITE          2
11509 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/gfs2_ondisk.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/gfs2_ondisk.h
11510 --- linux-4.9.76/include/uapi/linux/gfs2_ondisk.h       2016-12-11 19:17:54.000000000 +0000
11511 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/gfs2_ondisk.h     2018-01-10 02:50:49.000000000 +0000
11512 @@ -225,6 +225,9 @@ enum {
11513         gfs2fl_Sync             = 8,
11514         gfs2fl_System           = 9,
11515         gfs2fl_TopLevel         = 10,
11516 +       gfs2fl_IXUnlink         = 16,
11517 +       gfs2fl_Barrier          = 17,
11518 +       gfs2fl_Cow              = 18,
11519         gfs2fl_TruncInProg      = 29,
11520         gfs2fl_InheritDirectio  = 30,
11521         gfs2fl_InheritJdata     = 31,
11522 @@ -242,6 +245,9 @@ enum {
11523  #define GFS2_DIF_SYNC                  0x00000100
11524  #define GFS2_DIF_SYSTEM                        0x00000200 /* New in gfs2 */
11525  #define GFS2_DIF_TOPDIR                        0x00000400 /* New in gfs2 */
11526 +#define GFS2_DIF_IXUNLINK               0x00010000
11527 +#define GFS2_DIF_BARRIER                0x00020000
11528 +#define GFS2_DIF_COW                    0x00040000
11529  #define GFS2_DIF_TRUNC_IN_PROG         0x20000000 /* New in gfs2 */
11530  #define GFS2_DIF_INHERIT_DIRECTIO      0x40000000 /* only in gfs1 */
11531  #define GFS2_DIF_INHERIT_JDATA         0x80000000
11532 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/if_tun.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/if_tun.h
11533 --- linux-4.9.76/include/uapi/linux/if_tun.h    2016-12-11 19:17:54.000000000 +0000
11534 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/if_tun.h  2018-01-10 02:50:49.000000000 +0000
11535 @@ -56,6 +56,7 @@
11536   */
11537  #define TUNSETVNETBE _IOW('T', 222, int)
11538  #define TUNGETVNETBE _IOR('T', 223, int)
11539 +#define TUNSETNID    _IOW('T', 224, int)
11540
11541  /* TUNSETIFF ifr flags */
11542  #define IFF_TUN                0x0001
11543 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/major.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/major.h
11544 --- linux-4.9.76/include/uapi/linux/major.h     2016-12-11 19:17:54.000000000 +0000
11545 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/major.h   2018-01-10 02:50:49.000000000 +0000
11546 @@ -15,6 +15,7 @@
11547  #define HD_MAJOR               IDE0_MAJOR
11548  #define PTY_SLAVE_MAJOR                3
11549  #define TTY_MAJOR              4
11550 +#define VROOT_MAJOR            4
11551  #define TTYAUX_MAJOR           5
11552  #define LP_MAJOR               6
11553  #define VCS_MAJOR              7
11554 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/nfs_mount.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/nfs_mount.h
11555 --- linux-4.9.76/include/uapi/linux/nfs_mount.h 2016-12-11 19:17:54.000000000 +0000
11556 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/nfs_mount.h       2018-01-10 02:50:49.000000000 +0000
11557 @@ -63,7 +63,8 @@ struct nfs_mount_data {
11558  #define NFS_MOUNT_SECFLAVOUR   0x2000  /* 5 non-text parsed mount data only */
11559  #define NFS_MOUNT_NORDIRPLUS   0x4000  /* 5 */
11560  #define NFS_MOUNT_UNSHARED     0x8000  /* 5 */
11561 -#define NFS_MOUNT_FLAGMASK     0xFFFF
11562 +#define NFS_MOUNT_TAGGED       0x10000 /* context tagging */
11563 +#define NFS_MOUNT_FLAGMASK     0x1FFFF
11564
11565  /* The following are for internal use only */
11566  #define NFS_MOUNT_LOOKUP_CACHE_NONEG   0x10000
11567 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/reboot.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/reboot.h
11568 --- linux-4.9.76/include/uapi/linux/reboot.h    2016-12-11 19:17:54.000000000 +0000
11569 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/reboot.h  2018-01-10 02:50:49.000000000 +0000
11570 @@ -33,7 +33,7 @@
11571  #define        LINUX_REBOOT_CMD_RESTART2       0xA1B2C3D4
11572  #define        LINUX_REBOOT_CMD_SW_SUSPEND     0xD000FCE2
11573  #define        LINUX_REBOOT_CMD_KEXEC          0x45584543
11574 -
11575 +#define        LINUX_REBOOT_CMD_OOM            0xDEADBEEF
11576
11577
11578  #endif /* _UAPI_LINUX_REBOOT_H */
11579 diff -NurpP --minimal linux-4.9.76/include/uapi/linux/sysctl.h linux-4.9.76-vs2.3.9.5/include/uapi/linux/sysctl.h
11580 --- linux-4.9.76/include/uapi/linux/sysctl.h    2016-12-11 19:17:54.000000000 +0000
11581 +++ linux-4.9.76-vs2.3.9.5/include/uapi/linux/sysctl.h  2018-01-10 02:50:49.000000000 +0000
11582 @@ -58,6 +58,7 @@ enum
11583         CTL_ABI=9,              /* Binary emulation */
11584         CTL_CPU=10,             /* CPU stuff (speed scaling, etc) */
11585         CTL_ARLAN=254,          /* arlan wireless driver */
11586 +       CTL_VSERVER=4242,       /* Linux-VServer debug */
11587         CTL_S390DBF=5677,       /* s390 debug */
11588         CTL_SUNRPC=7249,        /* sunrpc debug */
11589         CTL_PM=9899,            /* frv power management */
11590 @@ -92,6 +93,7 @@ enum
11591
11592         KERN_PANIC=15,          /* int: panic timeout */
11593         KERN_REALROOTDEV=16,    /* real root device to mount after initrd */
11594 +       KERN_VSHELPER=17,       /* string: path to vshelper policy agent */
11595
11596         KERN_SPARC_REBOOT=21,   /* reboot command on Sparc */
11597         KERN_CTLALTDEL=22,      /* int: allow ctl-alt-del to reboot */
11598 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/Kbuild linux-4.9.76-vs2.3.9.5/include/uapi/vserver/Kbuild
11599 --- linux-4.9.76/include/uapi/vserver/Kbuild    1970-01-01 00:00:00.000000000 +0000
11600 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/Kbuild  2018-01-10 02:50:49.000000000 +0000
11601 @@ -0,0 +1,9 @@
11602 +
11603 +header-y += context_cmd.h network_cmd.h space_cmd.h \
11604 +       cacct_cmd.h cvirt_cmd.h limit_cmd.h dlimit_cmd.h \
11605 +       inode_cmd.h tag_cmd.h sched_cmd.h signal_cmd.h \
11606 +       debug_cmd.h device_cmd.h
11607 +
11608 +header-y += switch.h context.h network.h monitor.h \
11609 +       limit.h inode.h device.h
11610 +
11611 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/cacct_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/cacct_cmd.h
11612 --- linux-4.9.76/include/uapi/vserver/cacct_cmd.h       1970-01-01 00:00:00.000000000 +0000
11613 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/cacct_cmd.h     2018-01-10 02:50:49.000000000 +0000
11614 @@ -0,0 +1,15 @@
11615 +#ifndef _UAPI_VS_CACCT_CMD_H
11616 +#define _UAPI_VS_CACCT_CMD_H
11617 +
11618 +
11619 +/* virtual host info name commands */
11620 +
11621 +#define VCMD_sock_stat         VC_CMD(VSTAT, 5, 0)
11622 +
11623 +struct vcmd_sock_stat_v0 {
11624 +       uint32_t field;
11625 +       uint32_t count[3];
11626 +       uint64_t total[3];
11627 +};
11628 +
11629 +#endif /* _UAPI_VS_CACCT_CMD_H */
11630 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/context.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/context.h
11631 --- linux-4.9.76/include/uapi/vserver/context.h 1970-01-01 00:00:00.000000000 +0000
11632 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/context.h       2018-01-10 02:50:49.000000000 +0000
11633 @@ -0,0 +1,81 @@
11634 +#ifndef _UAPI_VS_CONTEXT_H
11635 +#define _UAPI_VS_CONTEXT_H
11636 +
11637 +#include <linux/types.h>
11638 +#include <linux/capability.h>
11639 +
11640 +
11641 +/* context flags */
11642 +
11643 +#define VXF_INFO_SCHED         0x00000002
11644 +#define VXF_INFO_NPROC         0x00000004
11645 +#define VXF_INFO_PRIVATE       0x00000008
11646 +
11647 +#define VXF_INFO_INIT          0x00000010
11648 +#define VXF_INFO_HIDE          0x00000020
11649 +#define VXF_INFO_ULIMIT                0x00000040
11650 +#define VXF_INFO_NSPACE                0x00000080
11651 +
11652 +#define VXF_SCHED_HARD         0x00000100
11653 +#define VXF_SCHED_PRIO         0x00000200
11654 +#define VXF_SCHED_PAUSE                0x00000400
11655 +
11656 +#define VXF_VIRT_MEM           0x00010000
11657 +#define VXF_VIRT_UPTIME                0x00020000
11658 +#define VXF_VIRT_CPU           0x00040000
11659 +#define VXF_VIRT_LOAD          0x00080000
11660 +#define VXF_VIRT_TIME          0x00100000
11661 +
11662 +#define VXF_HIDE_MOUNT         0x01000000
11663 +/* was VXF_HIDE_NETIF          0x02000000 */
11664 +#define VXF_HIDE_VINFO         0x04000000
11665 +
11666 +#define VXF_STATE_SETUP                (1ULL << 32)
11667 +#define VXF_STATE_INIT         (1ULL << 33)
11668 +#define VXF_STATE_ADMIN                (1ULL << 34)
11669 +
11670 +#define VXF_SC_HELPER          (1ULL << 36)
11671 +#define VXF_REBOOT_KILL                (1ULL << 37)
11672 +#define VXF_PERSISTENT         (1ULL << 38)
11673 +
11674 +#define VXF_FORK_RSS           (1ULL << 48)
11675 +#define VXF_PROLIFIC           (1ULL << 49)
11676 +
11677 +#define VXF_IGNEG_NICE         (1ULL << 52)
11678 +
11679 +#define VXF_ONE_TIME           (0x0007ULL << 32)
11680 +
11681 +#define VXF_INIT_SET           (VXF_STATE_SETUP | VXF_STATE_INIT | VXF_STATE_ADMIN)
11682 +
11683 +
11684 +/* context migration */
11685 +
11686 +#define VXM_SET_INIT           0x00000001
11687 +#define VXM_SET_REAPER         0x00000002
11688 +
11689 +/* context caps */
11690 +
11691 +#define VXC_SET_UTSNAME                0x00000001
11692 +#define VXC_SET_RLIMIT         0x00000002
11693 +#define VXC_FS_SECURITY                0x00000004
11694 +#define VXC_FS_TRUSTED         0x00000008
11695 +#define VXC_TIOCSTI            0x00000010
11696 +
11697 +/* was VXC_RAW_ICMP            0x00000100 */
11698 +#define VXC_SYSLOG             0x00001000
11699 +#define VXC_OOM_ADJUST         0x00002000
11700 +#define VXC_AUDIT_CONTROL      0x00004000
11701 +
11702 +#define VXC_SECURE_MOUNT       0x00010000
11703 +/* #define VXC_SECURE_REMOUNT  0x00020000 */
11704 +#define VXC_BINARY_MOUNT       0x00040000
11705 +#define VXC_DEV_MOUNT          0x00080000
11706 +
11707 +#define VXC_QUOTA_CTL          0x00100000
11708 +#define VXC_ADMIN_MAPPER       0x00200000
11709 +#define VXC_ADMIN_CLOOP                0x00400000
11710 +
11711 +#define VXC_KTHREAD            0x01000000
11712 +#define VXC_NAMESPACE          0x02000000
11713 +
11714 +#endif /* _UAPI_VS_CONTEXT_H */
11715 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/context_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/context_cmd.h
11716 --- linux-4.9.76/include/uapi/vserver/context_cmd.h     1970-01-01 00:00:00.000000000 +0000
11717 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/context_cmd.h   2018-01-10 02:50:49.000000000 +0000
11718 @@ -0,0 +1,115 @@
11719 +#ifndef _UAPI_VS_CONTEXT_CMD_H
11720 +#define _UAPI_VS_CONTEXT_CMD_H
11721 +
11722 +
11723 +/* vinfo commands */
11724 +
11725 +#define VCMD_task_xid          VC_CMD(VINFO, 1, 0)
11726 +
11727 +
11728 +#define VCMD_vx_info           VC_CMD(VINFO, 5, 0)
11729 +
11730 +struct vcmd_vx_info_v0 {
11731 +       uint32_t xid;
11732 +       uint32_t initpid;
11733 +       /* more to come */
11734 +};
11735 +
11736 +
11737 +#define VCMD_ctx_stat          VC_CMD(VSTAT, 0, 0)
11738 +
11739 +struct vcmd_ctx_stat_v0 {
11740 +       uint32_t usecnt;
11741 +       uint32_t tasks;
11742 +       /* more to come */
11743 +};
11744 +
11745 +
11746 +/* context commands */
11747 +
11748 +#define VCMD_ctx_create_v0     VC_CMD(VPROC, 1, 0)
11749 +#define VCMD_ctx_create                VC_CMD(VPROC, 1, 1)
11750 +
11751 +struct vcmd_ctx_create {
11752 +       uint64_t flagword;
11753 +};
11754 +
11755 +#define VCMD_ctx_migrate_v0    VC_CMD(PROCMIG, 1, 0)
11756 +#define VCMD_ctx_migrate       VC_CMD(PROCMIG, 1, 1)
11757 +
11758 +struct vcmd_ctx_migrate {
11759 +       uint64_t flagword;
11760 +};
11761 +
11762 +
11763 +
11764 +/* flag commands */
11765 +
11766 +#define VCMD_get_cflags                VC_CMD(FLAGS, 1, 0)
11767 +#define VCMD_set_cflags                VC_CMD(FLAGS, 2, 0)
11768 +
11769 +struct vcmd_ctx_flags_v0 {
11770 +       uint64_t flagword;
11771 +       uint64_t mask;
11772 +};
11773 +
11774 +
11775 +
11776 +/* context caps commands */
11777 +
11778 +#define VCMD_get_ccaps         VC_CMD(FLAGS, 3, 1)
11779 +#define VCMD_set_ccaps         VC_CMD(FLAGS, 4, 1)
11780 +
11781 +struct vcmd_ctx_caps_v1 {
11782 +       uint64_t ccaps;
11783 +       uint64_t cmask;
11784 +};
11785 +
11786 +
11787 +
11788 +/* bcaps commands */
11789 +
11790 +#define VCMD_get_bcaps         VC_CMD(FLAGS, 9, 0)
11791 +#define VCMD_set_bcaps         VC_CMD(FLAGS, 10, 0)
11792 +
11793 +struct vcmd_bcaps {
11794 +       uint64_t bcaps;
11795 +       uint64_t bmask;
11796 +};
11797 +
11798 +
11799 +
11800 +/* umask commands */
11801 +
11802 +#define VCMD_get_umask         VC_CMD(FLAGS, 13, 0)
11803 +#define VCMD_set_umask         VC_CMD(FLAGS, 14, 0)
11804 +
11805 +struct vcmd_umask {
11806 +       uint64_t umask;
11807 +       uint64_t mask;
11808 +};
11809 +
11810 +
11811 +
11812 +/* wmask commands */
11813 +
11814 +#define VCMD_get_wmask         VC_CMD(FLAGS, 15, 0)
11815 +#define VCMD_set_wmask         VC_CMD(FLAGS, 16, 0)
11816 +
11817 +struct vcmd_wmask {
11818 +       uint64_t wmask;
11819 +       uint64_t mask;
11820 +};
11821 +
11822 +
11823 +
11824 +/* OOM badness */
11825 +
11826 +#define VCMD_get_badness       VC_CMD(MEMCTRL, 5, 0)
11827 +#define VCMD_set_badness       VC_CMD(MEMCTRL, 6, 0)
11828 +
11829 +struct vcmd_badness_v0 {
11830 +       int64_t bias;
11831 +};
11832 +
11833 +#endif /* _UAPI_VS_CONTEXT_CMD_H */
11834 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/cvirt_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/cvirt_cmd.h
11835 --- linux-4.9.76/include/uapi/vserver/cvirt_cmd.h       1970-01-01 00:00:00.000000000 +0000
11836 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/cvirt_cmd.h     2018-01-10 02:50:49.000000000 +0000
11837 @@ -0,0 +1,41 @@
11838 +#ifndef _UAPI_VS_CVIRT_CMD_H
11839 +#define _UAPI_VS_CVIRT_CMD_H
11840 +
11841 +
11842 +/* virtual host info name commands */
11843 +
11844 +#define VCMD_set_vhi_name      VC_CMD(VHOST, 1, 0)
11845 +#define VCMD_get_vhi_name      VC_CMD(VHOST, 2, 0)
11846 +
11847 +struct vcmd_vhi_name_v0 {
11848 +       uint32_t field;
11849 +       char name[65];
11850 +};
11851 +
11852 +
11853 +enum vhi_name_field {
11854 +       VHIN_CONTEXT = 0,
11855 +       VHIN_SYSNAME,
11856 +       VHIN_NODENAME,
11857 +       VHIN_RELEASE,
11858 +       VHIN_VERSION,
11859 +       VHIN_MACHINE,
11860 +       VHIN_DOMAINNAME,
11861 +};
11862 +
11863 +
11864 +
11865 +#define VCMD_virt_stat         VC_CMD(VSTAT, 3, 0)
11866 +
11867 +struct vcmd_virt_stat_v0 {
11868 +       uint64_t offset;
11869 +       uint64_t uptime;
11870 +       uint32_t nr_threads;
11871 +       uint32_t nr_running;
11872 +       uint32_t nr_uninterruptible;
11873 +       uint32_t nr_onhold;
11874 +       uint32_t nr_forks;
11875 +       uint32_t load[3];
11876 +};
11877 +
11878 +#endif /* _UAPI_VS_CVIRT_CMD_H */
11879 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/debug_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/debug_cmd.h
11880 --- linux-4.9.76/include/uapi/vserver/debug_cmd.h       1970-01-01 00:00:00.000000000 +0000
11881 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/debug_cmd.h     2018-01-10 02:50:49.000000000 +0000
11882 @@ -0,0 +1,24 @@
11883 +#ifndef _UAPI_VS_DEBUG_CMD_H
11884 +#define _UAPI_VS_DEBUG_CMD_H
11885 +
11886 +
11887 +/* debug commands */
11888 +
11889 +#define VCMD_dump_history      VC_CMD(DEBUG, 1, 0)
11890 +
11891 +#define VCMD_read_history      VC_CMD(DEBUG, 5, 0)
11892 +#define VCMD_read_monitor      VC_CMD(DEBUG, 6, 0)
11893 +
11894 +struct  vcmd_read_history_v0 {
11895 +       uint32_t index;
11896 +       uint32_t count;
11897 +       char __user *data;
11898 +};
11899 +
11900 +struct  vcmd_read_monitor_v0 {
11901 +       uint32_t index;
11902 +       uint32_t count;
11903 +       char __user *data;
11904 +};
11905 +
11906 +#endif /* _UAPI_VS_DEBUG_CMD_H */
11907 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/device.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/device.h
11908 --- linux-4.9.76/include/uapi/vserver/device.h  1970-01-01 00:00:00.000000000 +0000
11909 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/device.h        2018-01-10 02:50:49.000000000 +0000
11910 @@ -0,0 +1,12 @@
11911 +#ifndef _UAPI_VS_DEVICE_H
11912 +#define _UAPI_VS_DEVICE_H
11913 +
11914 +
11915 +#define DATTR_CREATE   0x00000001
11916 +#define DATTR_OPEN     0x00000002
11917 +
11918 +#define DATTR_REMAP    0x00000010
11919 +
11920 +#define DATTR_MASK     0x00000013
11921 +
11922 +#endif /* _UAPI_VS_DEVICE_H */
11923 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/device_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/device_cmd.h
11924 --- linux-4.9.76/include/uapi/vserver/device_cmd.h      1970-01-01 00:00:00.000000000 +0000
11925 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/device_cmd.h    2018-01-10 02:50:49.000000000 +0000
11926 @@ -0,0 +1,16 @@
11927 +#ifndef _UAPI_VS_DEVICE_CMD_H
11928 +#define _UAPI_VS_DEVICE_CMD_H
11929 +
11930 +
11931 +/*  device vserver commands */
11932 +
11933 +#define VCMD_set_mapping       VC_CMD(DEVICE, 1, 0)
11934 +#define VCMD_unset_mapping     VC_CMD(DEVICE, 2, 0)
11935 +
11936 +struct vcmd_set_mapping_v0 {
11937 +       const char __user *device;
11938 +       const char __user *target;
11939 +       uint32_t flags;
11940 +};
11941 +
11942 +#endif /* _UAPI_VS_DEVICE_CMD_H */
11943 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/dlimit_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/dlimit_cmd.h
11944 --- linux-4.9.76/include/uapi/vserver/dlimit_cmd.h      1970-01-01 00:00:00.000000000 +0000
11945 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/dlimit_cmd.h    2018-01-10 02:50:49.000000000 +0000
11946 @@ -0,0 +1,67 @@
11947 +#ifndef _UAPI_VS_DLIMIT_CMD_H
11948 +#define _UAPI_VS_DLIMIT_CMD_H
11949 +
11950 +
11951 +/*  dlimit vserver commands */
11952 +
11953 +#define VCMD_add_dlimit                VC_CMD(DLIMIT, 1, 0)
11954 +#define VCMD_rem_dlimit                VC_CMD(DLIMIT, 2, 0)
11955 +
11956 +#define VCMD_set_dlimit                VC_CMD(DLIMIT, 5, 0)
11957 +#define VCMD_get_dlimit                VC_CMD(DLIMIT, 6, 0)
11958 +
11959 +struct vcmd_ctx_dlimit_base_v0 {
11960 +       const char __user *name;
11961 +       uint32_t flags;
11962 +};
11963 +
11964 +struct vcmd_ctx_dlimit_v0 {
11965 +       const char __user *name;
11966 +       uint32_t space_used;                    /* used space in kbytes */
11967 +       uint32_t space_total;                   /* maximum space in kbytes */
11968 +       uint32_t inodes_used;                   /* used inodes */
11969 +       uint32_t inodes_total;                  /* maximum inodes */
11970 +       uint32_t reserved;                      /* reserved for root in % */
11971 +       uint32_t flags;
11972 +};
11973 +
11974 +#define CDLIM_UNSET            ((uint32_t)0UL)
11975 +#define CDLIM_INFINITY         ((uint32_t)~0UL)
11976 +#define CDLIM_KEEP             ((uint32_t)~1UL)
11977 +
11978 +#define DLIME_UNIT     0
11979 +#define DLIME_KILO     1
11980 +#define DLIME_MEGA     2
11981 +#define DLIME_GIGA     3
11982 +
11983 +#define DLIMF_SHIFT    0x10
11984 +
11985 +#define DLIMS_USED     0
11986 +#define DLIMS_TOTAL    2
11987 +
11988 +static inline
11989 +uint64_t dlimit_space_32to64(uint32_t val, uint32_t flags, int shift)
11990 +{
11991 +       int exp = (flags & DLIMF_SHIFT) ?
11992 +               (flags >> shift) & DLIME_GIGA : DLIME_KILO;
11993 +       return ((uint64_t)val) << (10 * exp);
11994 +}
11995 +
11996 +static inline
11997 +uint32_t dlimit_space_64to32(uint64_t val, uint32_t *flags, int shift)
11998 +{
11999 +       int exp = 0;
12000 +
12001 +       if (*flags & DLIMF_SHIFT) {
12002 +               while (val > (1LL << 32) && (exp < 3)) {
12003 +                       val >>= 10;
12004 +                       exp++;
12005 +               }
12006 +               *flags &= ~(DLIME_GIGA << shift);
12007 +               *flags |= exp << shift;
12008 +       } else
12009 +               val >>= 10;
12010 +       return val;
12011 +}
12012 +
12013 +#endif /* _UAPI_VS_DLIMIT_CMD_H */
12014 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/inode.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/inode.h
12015 --- linux-4.9.76/include/uapi/vserver/inode.h   1970-01-01 00:00:00.000000000 +0000
12016 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/inode.h 2018-01-10 02:50:49.000000000 +0000
12017 @@ -0,0 +1,23 @@
12018 +#ifndef _UAPI_VS_INODE_H
12019 +#define _UAPI_VS_INODE_H
12020 +
12021 +
12022 +#define IATTR_TAG      0x01000000
12023 +
12024 +#define IATTR_ADMIN    0x00000001
12025 +#define IATTR_WATCH    0x00000002
12026 +#define IATTR_HIDE     0x00000004
12027 +#define IATTR_FLAGS    0x00000007
12028 +
12029 +#define IATTR_BARRIER  0x00010000
12030 +#define IATTR_IXUNLINK 0x00020000
12031 +#define IATTR_IMMUTABLE 0x00040000
12032 +#define IATTR_COW      0x00080000
12033 +
12034 +
12035 +/* inode ioctls */
12036 +
12037 +#define FIOC_GETXFLG   _IOR('x', 5, long)
12038 +#define FIOC_SETXFLG   _IOW('x', 6, long)
12039 +
12040 +#endif /* _UAPI_VS_INODE_H */
12041 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/inode_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/inode_cmd.h
12042 --- linux-4.9.76/include/uapi/vserver/inode_cmd.h       1970-01-01 00:00:00.000000000 +0000
12043 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/inode_cmd.h     2018-01-10 02:50:49.000000000 +0000
12044 @@ -0,0 +1,26 @@
12045 +#ifndef _UAPI_VS_INODE_CMD_H
12046 +#define _UAPI_VS_INODE_CMD_H
12047 +
12048 +
12049 +/*  inode vserver commands */
12050 +
12051 +#define VCMD_get_iattr         VC_CMD(INODE, 1, 1)
12052 +#define VCMD_set_iattr         VC_CMD(INODE, 2, 1)
12053 +
12054 +#define VCMD_fget_iattr                VC_CMD(INODE, 3, 0)
12055 +#define VCMD_fset_iattr                VC_CMD(INODE, 4, 0)
12056 +
12057 +struct vcmd_ctx_iattr_v1 {
12058 +       const char __user *name;
12059 +       uint32_t tag;
12060 +       uint32_t flags;
12061 +       uint32_t mask;
12062 +};
12063 +
12064 +struct vcmd_ctx_fiattr_v0 {
12065 +       uint32_t tag;
12066 +       uint32_t flags;
12067 +       uint32_t mask;
12068 +};
12069 +
12070 +#endif /* _UAPI_VS_INODE_CMD_H */
12071 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/limit.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/limit.h
12072 --- linux-4.9.76/include/uapi/vserver/limit.h   1970-01-01 00:00:00.000000000 +0000
12073 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/limit.h 2018-01-10 02:50:49.000000000 +0000
12074 @@ -0,0 +1,14 @@
12075 +#ifndef _UAPI_VS_LIMIT_H
12076 +#define _UAPI_VS_LIMIT_H
12077 +
12078 +
12079 +#define VLIMIT_NSOCK   16
12080 +#define VLIMIT_OPENFD  17
12081 +#define VLIMIT_ANON    18
12082 +#define VLIMIT_SHMEM   19
12083 +#define VLIMIT_SEMARY  20
12084 +#define VLIMIT_NSEMS   21
12085 +#define VLIMIT_DENTRY  22
12086 +#define VLIMIT_MAPPED  23
12087 +
12088 +#endif /* _UAPI_VS_LIMIT_H */
12089 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/limit_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/limit_cmd.h
12090 --- linux-4.9.76/include/uapi/vserver/limit_cmd.h       1970-01-01 00:00:00.000000000 +0000
12091 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/limit_cmd.h     2018-01-10 02:50:49.000000000 +0000
12092 @@ -0,0 +1,40 @@
12093 +#ifndef _UAPI_VS_LIMIT_CMD_H
12094 +#define _UAPI_VS_LIMIT_CMD_H
12095 +
12096 +
12097 +/*  rlimit vserver commands */
12098 +
12099 +#define VCMD_get_rlimit                VC_CMD(RLIMIT, 1, 0)
12100 +#define VCMD_set_rlimit                VC_CMD(RLIMIT, 2, 0)
12101 +#define VCMD_get_rlimit_mask   VC_CMD(RLIMIT, 3, 0)
12102 +#define VCMD_reset_hits                VC_CMD(RLIMIT, 7, 0)
12103 +#define VCMD_reset_minmax      VC_CMD(RLIMIT, 9, 0)
12104 +
12105 +struct vcmd_ctx_rlimit_v0 {
12106 +       uint32_t id;
12107 +       uint64_t minimum;
12108 +       uint64_t softlimit;
12109 +       uint64_t maximum;
12110 +};
12111 +
12112 +struct vcmd_ctx_rlimit_mask_v0 {
12113 +       uint32_t minimum;
12114 +       uint32_t softlimit;
12115 +       uint32_t maximum;
12116 +};
12117 +
12118 +#define VCMD_rlimit_stat       VC_CMD(VSTAT, 1, 0)
12119 +
12120 +struct vcmd_rlimit_stat_v0 {
12121 +       uint32_t id;
12122 +       uint32_t hits;
12123 +       uint64_t value;
12124 +       uint64_t minimum;
12125 +       uint64_t maximum;
12126 +};
12127 +
12128 +#define CRLIM_UNSET            (0ULL)
12129 +#define CRLIM_INFINITY         (~0ULL)
12130 +#define CRLIM_KEEP             (~1ULL)
12131 +
12132 +#endif /* _UAPI_VS_LIMIT_CMD_H */
12133 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/monitor.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/monitor.h
12134 --- linux-4.9.76/include/uapi/vserver/monitor.h 1970-01-01 00:00:00.000000000 +0000
12135 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/monitor.h       2018-01-10 02:50:49.000000000 +0000
12136 @@ -0,0 +1,96 @@
12137 +#ifndef _UAPI_VS_MONITOR_H
12138 +#define _UAPI_VS_MONITOR_H
12139 +
12140 +#include <linux/types.h>
12141 +
12142 +
12143 +enum {
12144 +       VXM_UNUSED = 0,
12145 +
12146 +       VXM_SYNC = 0x10,
12147 +
12148 +       VXM_UPDATE = 0x20,
12149 +       VXM_UPDATE_1,
12150 +       VXM_UPDATE_2,
12151 +
12152 +       VXM_RQINFO_1 = 0x24,
12153 +       VXM_RQINFO_2,
12154 +
12155 +       VXM_ACTIVATE = 0x40,
12156 +       VXM_DEACTIVATE,
12157 +       VXM_IDLE,
12158 +
12159 +       VXM_HOLD = 0x44,
12160 +       VXM_UNHOLD,
12161 +
12162 +       VXM_MIGRATE = 0x48,
12163 +       VXM_RESCHED,
12164 +
12165 +       /* all other bits are flags */
12166 +       VXM_SCHED = 0x80,
12167 +};
12168 +
12169 +struct _vxm_update_1 {
12170 +       uint32_t tokens_max;
12171 +       uint32_t fill_rate;
12172 +       uint32_t interval;
12173 +};
12174 +
12175 +struct _vxm_update_2 {
12176 +       uint32_t tokens_min;
12177 +       uint32_t fill_rate;
12178 +       uint32_t interval;
12179 +};
12180 +
12181 +struct _vxm_rqinfo_1 {
12182 +       uint16_t running;
12183 +       uint16_t onhold;
12184 +       uint16_t iowait;
12185 +       uint16_t uintr;
12186 +       uint32_t idle_tokens;
12187 +};
12188 +
12189 +struct _vxm_rqinfo_2 {
12190 +       uint32_t norm_time;
12191 +       uint32_t idle_time;
12192 +       uint32_t idle_skip;
12193 +};
12194 +
12195 +struct _vxm_sched {
12196 +       uint32_t tokens;
12197 +       uint32_t norm_time;
12198 +       uint32_t idle_time;
12199 +};
12200 +
12201 +struct _vxm_task {
12202 +       uint16_t pid;
12203 +       uint16_t state;
12204 +};
12205 +
12206 +struct _vxm_event {
12207 +       uint32_t jif;
12208 +       union {
12209 +               uint32_t seq;
12210 +               uint32_t sec;
12211 +       };
12212 +       union {
12213 +               uint32_t tokens;
12214 +               uint32_t nsec;
12215 +               struct _vxm_task tsk;
12216 +       };
12217 +};
12218 +
12219 +struct _vx_mon_entry {
12220 +       uint16_t type;
12221 +       uint16_t xid;
12222 +       union {
12223 +               struct _vxm_event ev;
12224 +               struct _vxm_sched sd;
12225 +               struct _vxm_update_1 u1;
12226 +               struct _vxm_update_2 u2;
12227 +               struct _vxm_rqinfo_1 q1;
12228 +               struct _vxm_rqinfo_2 q2;
12229 +       };
12230 +};
12231 +
12232 +#endif /* _UAPI_VS_MONITOR_H */
12233 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/network.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/network.h
12234 --- linux-4.9.76/include/uapi/vserver/network.h 1970-01-01 00:00:00.000000000 +0000
12235 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/network.h       2018-01-10 02:50:49.000000000 +0000
12236 @@ -0,0 +1,76 @@
12237 +#ifndef _UAPI_VS_NETWORK_H
12238 +#define _UAPI_VS_NETWORK_H
12239 +
12240 +#include <linux/types.h>
12241 +
12242 +
12243 +#define MAX_N_CONTEXT  65535   /* Arbitrary limit */
12244 +
12245 +
12246 +/* network flags */
12247 +
12248 +#define NXF_INFO_PRIVATE       0x00000008
12249 +
12250 +#define NXF_SINGLE_IP          0x00000100
12251 +#define NXF_LBACK_REMAP                0x00000200
12252 +#define NXF_LBACK_ALLOW                0x00000400
12253 +
12254 +#define NXF_HIDE_NETIF         0x02000000
12255 +#define NXF_HIDE_LBACK         0x04000000
12256 +
12257 +#define NXF_STATE_SETUP                (1ULL << 32)
12258 +#define NXF_STATE_ADMIN                (1ULL << 34)
12259 +
12260 +#define NXF_SC_HELPER          (1ULL << 36)
12261 +#define NXF_PERSISTENT         (1ULL << 38)
12262 +
12263 +#define NXF_ONE_TIME           (0x0005ULL << 32)
12264 +
12265 +
12266 +#define        NXF_INIT_SET            (__nxf_init_set())
12267 +
12268 +static inline uint64_t __nxf_init_set(void) {
12269 +       return    NXF_STATE_ADMIN
12270 +#ifdef CONFIG_VSERVER_AUTO_LBACK
12271 +               | NXF_LBACK_REMAP
12272 +               | NXF_HIDE_LBACK
12273 +#endif
12274 +#ifdef CONFIG_VSERVER_AUTO_SINGLE
12275 +               | NXF_SINGLE_IP
12276 +#endif
12277 +               | NXF_HIDE_NETIF;
12278 +}
12279 +
12280 +
12281 +/* network caps */
12282 +
12283 +#define NXC_TUN_CREATE         0x00000001
12284 +
12285 +#define NXC_RAW_ICMP           0x00000100
12286 +
12287 +#define NXC_MULTICAST          0x00001000
12288 +
12289 +
12290 +/* address types */
12291 +
12292 +#define NXA_TYPE_IPV4          0x0001
12293 +#define NXA_TYPE_IPV6          0x0002
12294 +
12295 +#define NXA_TYPE_NONE          0x0000
12296 +#define NXA_TYPE_ANY           0x00FF
12297 +
12298 +#define NXA_TYPE_ADDR          0x0010
12299 +#define NXA_TYPE_MASK          0x0020
12300 +#define NXA_TYPE_RANGE         0x0040
12301 +
12302 +#define NXA_MASK_ALL           (NXA_TYPE_ADDR | NXA_TYPE_MASK | NXA_TYPE_RANGE)
12303 +
12304 +#define NXA_MOD_BCAST          0x0100
12305 +#define NXA_MOD_LBACK          0x0200
12306 +
12307 +#define NXA_LOOPBACK           0x1000
12308 +
12309 +#define NXA_MASK_BIND          (NXA_MASK_ALL | NXA_MOD_BCAST | NXA_MOD_LBACK)
12310 +#define NXA_MASK_SHOW          (NXA_MASK_ALL | NXA_LOOPBACK)
12311 +
12312 +#endif /* _UAPI_VS_NETWORK_H */
12313 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/network_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/network_cmd.h
12314 --- linux-4.9.76/include/uapi/vserver/network_cmd.h     1970-01-01 00:00:00.000000000 +0000
12315 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/network_cmd.h   2018-01-10 02:50:49.000000000 +0000
12316 @@ -0,0 +1,123 @@
12317 +#ifndef _UAPI_VS_NETWORK_CMD_H
12318 +#define _UAPI_VS_NETWORK_CMD_H
12319 +
12320 +
12321 +/* vinfo commands */
12322 +
12323 +#define VCMD_task_nid          VC_CMD(VINFO, 2, 0)
12324 +
12325 +
12326 +#define VCMD_nx_info           VC_CMD(VINFO, 6, 0)
12327 +
12328 +struct vcmd_nx_info_v0 {
12329 +       uint32_t nid;
12330 +       /* more to come */
12331 +};
12332 +
12333 +
12334 +#include <linux/in.h>
12335 +#include <linux/in6.h>
12336 +
12337 +#define VCMD_net_create_v0     VC_CMD(VNET, 1, 0)
12338 +#define VCMD_net_create                VC_CMD(VNET, 1, 1)
12339 +
12340 +struct  vcmd_net_create {
12341 +       uint64_t flagword;
12342 +};
12343 +
12344 +#define VCMD_net_migrate       VC_CMD(NETMIG, 1, 0)
12345 +
12346 +#define VCMD_net_add           VC_CMD(NETALT, 1, 0)
12347 +#define VCMD_net_remove                VC_CMD(NETALT, 2, 0)
12348 +
12349 +struct vcmd_net_addr_v0 {
12350 +       uint16_t type;
12351 +       uint16_t count;
12352 +       struct in_addr ip[4];
12353 +       struct in_addr mask[4];
12354 +};
12355 +
12356 +#define VCMD_net_add_ipv4_v1   VC_CMD(NETALT, 1, 1)
12357 +#define VCMD_net_rem_ipv4_v1   VC_CMD(NETALT, 2, 1)
12358 +
12359 +struct vcmd_net_addr_ipv4_v1 {
12360 +       uint16_t type;
12361 +       uint16_t flags;
12362 +       struct in_addr ip;
12363 +       struct in_addr mask;
12364 +};
12365 +
12366 +#define VCMD_net_add_ipv4      VC_CMD(NETALT, 1, 2)
12367 +#define VCMD_net_rem_ipv4      VC_CMD(NETALT, 2, 2)
12368 +
12369 +struct vcmd_net_addr_ipv4_v2 {
12370 +       uint16_t type;
12371 +       uint16_t flags;
12372 +       struct in_addr ip;
12373 +       struct in_addr ip2;
12374 +       struct in_addr mask;
12375 +};
12376 +
12377 +#define VCMD_net_add_ipv6      VC_CMD(NETALT, 3, 1)
12378 +#define VCMD_net_remove_ipv6   VC_CMD(NETALT, 4, 1)
12379 +
12380 +struct vcmd_net_addr_ipv6_v1 {
12381 +       uint16_t type;
12382 +       uint16_t flags;
12383 +       uint32_t prefix;
12384 +       struct in6_addr ip;
12385 +       struct in6_addr mask;
12386 +};
12387 +
12388 +#define VCMD_add_match_ipv4    VC_CMD(NETALT, 5, 0)
12389 +#define VCMD_get_match_ipv4    VC_CMD(NETALT, 6, 0)
12390 +
12391 +struct vcmd_match_ipv4_v0 {
12392 +       uint16_t type;
12393 +       uint16_t flags;
12394 +       uint16_t parent;
12395 +       uint16_t prefix;
12396 +       struct in_addr ip;
12397 +       struct in_addr ip2;
12398 +       struct in_addr mask;
12399 +};
12400 +
12401 +#define VCMD_add_match_ipv6    VC_CMD(NETALT, 7, 0)
12402 +#define VCMD_get_match_ipv6    VC_CMD(NETALT, 8, 0)
12403 +
12404 +struct vcmd_match_ipv6_v0 {
12405 +       uint16_t type;
12406 +       uint16_t flags;
12407 +       uint16_t parent;
12408 +       uint16_t prefix;
12409 +       struct in6_addr ip;
12410 +       struct in6_addr ip2;
12411 +       struct in6_addr mask;
12412 +};
12413 +
12414 +
12415 +
12416 +
12417 +/* flag commands */
12418 +
12419 +#define VCMD_get_nflags                VC_CMD(FLAGS, 5, 0)
12420 +#define VCMD_set_nflags                VC_CMD(FLAGS, 6, 0)
12421 +
12422 +struct vcmd_net_flags_v0 {
12423 +       uint64_t flagword;
12424 +       uint64_t mask;
12425 +};
12426 +
12427 +
12428 +
12429 +/* network caps commands */
12430 +
12431 +#define VCMD_get_ncaps         VC_CMD(FLAGS, 7, 0)
12432 +#define VCMD_set_ncaps         VC_CMD(FLAGS, 8, 0)
12433 +
12434 +struct vcmd_net_caps_v0 {
12435 +       uint64_t ncaps;
12436 +       uint64_t cmask;
12437 +};
12438 +
12439 +#endif /* _UAPI_VS_NETWORK_CMD_H */
12440 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/sched_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/sched_cmd.h
12441 --- linux-4.9.76/include/uapi/vserver/sched_cmd.h       1970-01-01 00:00:00.000000000 +0000
12442 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/sched_cmd.h     2018-01-10 02:50:49.000000000 +0000
12443 @@ -0,0 +1,13 @@
12444 +#ifndef _UAPI_VS_SCHED_CMD_H
12445 +#define _UAPI_VS_SCHED_CMD_H
12446 +
12447 +
12448 +struct vcmd_prio_bias {
12449 +       int32_t cpu_id;
12450 +       int32_t prio_bias;
12451 +};
12452 +
12453 +#define VCMD_set_prio_bias     VC_CMD(SCHED, 4, 0)
12454 +#define VCMD_get_prio_bias     VC_CMD(SCHED, 5, 0)
12455 +
12456 +#endif /* _UAPI_VS_SCHED_CMD_H */
12457 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/signal_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/signal_cmd.h
12458 --- linux-4.9.76/include/uapi/vserver/signal_cmd.h      1970-01-01 00:00:00.000000000 +0000
12459 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/signal_cmd.h    2018-01-10 02:50:49.000000000 +0000
12460 @@ -0,0 +1,31 @@
12461 +#ifndef _UAPI_VS_SIGNAL_CMD_H
12462 +#define _UAPI_VS_SIGNAL_CMD_H
12463 +
12464 +
12465 +/*  signalling vserver commands */
12466 +
12467 +#define VCMD_ctx_kill          VC_CMD(PROCTRL, 1, 0)
12468 +#define VCMD_wait_exit         VC_CMD(EVENT, 99, 0)
12469 +
12470 +struct vcmd_ctx_kill_v0 {
12471 +       int32_t pid;
12472 +       int32_t sig;
12473 +};
12474 +
12475 +struct vcmd_wait_exit_v0 {
12476 +       int32_t reboot_cmd;
12477 +       int32_t exit_code;
12478 +};
12479 +
12480 +
12481 +/*  process alteration commands */
12482 +
12483 +#define VCMD_get_pflags                VC_CMD(PROCALT, 5, 0)
12484 +#define VCMD_set_pflags                VC_CMD(PROCALT, 6, 0)
12485 +
12486 +struct vcmd_pflags_v0 {
12487 +       uint32_t flagword;
12488 +       uint32_t mask;
12489 +};
12490 +
12491 +#endif /* _UAPI_VS_SIGNAL_CMD_H */
12492 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/space_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/space_cmd.h
12493 --- linux-4.9.76/include/uapi/vserver/space_cmd.h       1970-01-01 00:00:00.000000000 +0000
12494 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/space_cmd.h     2018-01-10 02:50:49.000000000 +0000
12495 @@ -0,0 +1,28 @@
12496 +#ifndef _UAPI_VS_SPACE_CMD_H
12497 +#define _UAPI_VS_SPACE_CMD_H
12498 +
12499 +
12500 +#define VCMD_enter_space_v0    VC_CMD(PROCALT, 1, 0)
12501 +#define VCMD_enter_space_v1    VC_CMD(PROCALT, 1, 1)
12502 +#define VCMD_enter_space       VC_CMD(PROCALT, 1, 2)
12503 +
12504 +#define VCMD_set_space_v0      VC_CMD(PROCALT, 3, 0)
12505 +#define VCMD_set_space_v1      VC_CMD(PROCALT, 3, 1)
12506 +#define VCMD_set_space         VC_CMD(PROCALT, 3, 2)
12507 +
12508 +#define VCMD_get_space_mask_v0 VC_CMD(PROCALT, 4, 0)
12509 +
12510 +#define VCMD_get_space_mask    VC_CMD(VSPACE, 0, 1)
12511 +#define VCMD_get_space_default VC_CMD(VSPACE, 1, 0)
12512 +
12513 +
12514 +struct vcmd_space_mask_v1 {
12515 +       uint64_t mask;
12516 +};
12517 +
12518 +struct vcmd_space_mask_v2 {
12519 +       uint64_t mask;
12520 +       uint32_t index;
12521 +};
12522 +
12523 +#endif /* _UAPI_VS_SPACE_CMD_H */
12524 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/switch.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/switch.h
12525 --- linux-4.9.76/include/uapi/vserver/switch.h  1970-01-01 00:00:00.000000000 +0000
12526 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/switch.h        2018-01-10 02:50:49.000000000 +0000
12527 @@ -0,0 +1,90 @@
12528 +#ifndef _UAPI_VS_SWITCH_H
12529 +#define _UAPI_VS_SWITCH_H
12530 +
12531 +#include <linux/types.h>
12532 +
12533 +
12534 +#define VC_CATEGORY(c)         (((c) >> 24) & 0x3F)
12535 +#define VC_COMMAND(c)          (((c) >> 16) & 0xFF)
12536 +#define VC_VERSION(c)          ((c) & 0xFFF)
12537 +
12538 +#define VC_CMD(c, i, v)                ((((VC_CAT_ ## c) & 0x3F) << 24) \
12539 +                               | (((i) & 0xFF) << 16) | ((v) & 0xFFF))
12540 +
12541 +/*
12542 +
12543 +  Syscall Matrix V2.8
12544 +
12545 +        |VERSION|CREATE |MODIFY |MIGRATE|CONTROL|EXPERIM| |SPECIAL|SPECIAL|
12546 +        |STATS  |DESTROY|ALTER  |CHANGE |LIMIT  |TEST   | |       |       |
12547 +        |INFO   |SETUP  |       |MOVE   |       |       | |       |       |
12548 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12549 +  SYSTEM |VERSION|VSETUP |VHOST  |       |       |       | |DEVICE |       |
12550 +  HOST   |     00|     01|     02|     03|     04|     05| |     06|     07|
12551 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12552 +  CPU    |       |VPROC  |PROCALT|PROCMIG|PROCTRL|       | |SCHED. |       |
12553 +  PROCESS|     08|     09|     10|     11|     12|     13| |     14|     15|
12554 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12555 +  MEMORY |       |       |       |       |MEMCTRL|       | |SWAP   |       |
12556 +        |     16|     17|     18|     19|     20|     21| |     22|     23|
12557 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12558 +  NETWORK|       |VNET   |NETALT |NETMIG |NETCTL |       | |SERIAL |       |
12559 +        |     24|     25|     26|     27|     28|     29| |     30|     31|
12560 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12561 +  DISK   |       |       |       |TAGMIG |DLIMIT |       | |INODE  |       |
12562 +  VFS    |     32|     33|     34|     35|     36|     37| |     38|     39|
12563 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12564 +  OTHER  |VSTAT  |       |       |       |       |       | |VINFO  |       |
12565 +        |     40|     41|     42|     43|     44|     45| |     46|     47|
12566 +  =======+=======+=======+=======+=======+=======+=======+ +=======+=======+
12567 +  SPECIAL|EVENT  |       |       |       |FLAGS  |       | |VSPACE |       |
12568 +        |     48|     49|     50|     51|     52|     53| |     54|     55|
12569 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12570 +  SPECIAL|DEBUG  |       |       |       |RLIMIT |SYSCALL| |       |COMPAT |
12571 +        |     56|     57|     58|     59|     60|TEST 61| |     62|     63|
12572 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12573 +
12574 +*/
12575 +
12576 +#define VC_CAT_VERSION         0
12577 +
12578 +#define VC_CAT_VSETUP          1
12579 +#define VC_CAT_VHOST           2
12580 +
12581 +#define VC_CAT_DEVICE          6
12582 +
12583 +#define VC_CAT_VPROC           9
12584 +#define VC_CAT_PROCALT         10
12585 +#define VC_CAT_PROCMIG         11
12586 +#define VC_CAT_PROCTRL         12
12587 +
12588 +#define VC_CAT_SCHED           14
12589 +#define VC_CAT_MEMCTRL         20
12590 +
12591 +#define VC_CAT_VNET            25
12592 +#define VC_CAT_NETALT          26
12593 +#define VC_CAT_NETMIG          27
12594 +#define VC_CAT_NETCTRL         28
12595 +
12596 +#define VC_CAT_TAGMIG          35
12597 +#define VC_CAT_DLIMIT          36
12598 +#define VC_CAT_INODE           38
12599 +
12600 +#define VC_CAT_VSTAT           40
12601 +#define VC_CAT_VINFO           46
12602 +#define VC_CAT_EVENT           48
12603 +
12604 +#define VC_CAT_FLAGS           52
12605 +#define VC_CAT_VSPACE          54
12606 +#define VC_CAT_DEBUG           56
12607 +#define VC_CAT_RLIMIT          60
12608 +
12609 +#define VC_CAT_SYSTEST         61
12610 +#define VC_CAT_COMPAT          63
12611 +
12612 +/*  query version */
12613 +
12614 +#define VCMD_get_version       VC_CMD(VERSION, 0, 0)
12615 +#define VCMD_get_vci           VC_CMD(VERSION, 1, 0)
12616 +
12617 +#endif /* _UAPI_VS_SWITCH_H */
12618 diff -NurpP --minimal linux-4.9.76/include/uapi/vserver/tag_cmd.h linux-4.9.76-vs2.3.9.5/include/uapi/vserver/tag_cmd.h
12619 --- linux-4.9.76/include/uapi/vserver/tag_cmd.h 1970-01-01 00:00:00.000000000 +0000
12620 +++ linux-4.9.76-vs2.3.9.5/include/uapi/vserver/tag_cmd.h       2018-01-10 02:50:49.000000000 +0000
12621 @@ -0,0 +1,14 @@
12622 +#ifndef _UAPI_VS_TAG_CMD_H
12623 +#define _UAPI_VS_TAG_CMD_H
12624 +
12625 +
12626 +/* vinfo commands */
12627 +
12628 +#define VCMD_task_tag          VC_CMD(VINFO, 3, 0)
12629 +
12630 +
12631 +/* context commands */
12632 +
12633 +#define VCMD_tag_migrate       VC_CMD(TAGMIG, 1, 0)
12634 +
12635 +#endif /* _UAPI_VS_TAG_CMD_H */
12636 diff -NurpP --minimal linux-4.9.76/init/Kconfig linux-4.9.76-vs2.3.9.5/init/Kconfig
12637 --- linux-4.9.76/init/Kconfig   2016-12-11 19:17:54.000000000 +0000
12638 +++ linux-4.9.76-vs2.3.9.5/init/Kconfig 2018-01-10 02:50:49.000000000 +0000
12639 @@ -958,6 +958,7 @@ config NUMA_BALANCING_DEFAULT_ENABLED
12640  menuconfig CGROUPS
12641         bool "Control Group support"
12642         select KERNFS
12643 +       default y
12644         help
12645           This option adds support for grouping sets of processes together, for
12646           use with process control subsystems such as Cpusets, CFS, memory
12647 diff -NurpP --minimal linux-4.9.76/init/main.c linux-4.9.76-vs2.3.9.5/init/main.c
12648 --- linux-4.9.76/init/main.c    2018-01-13 21:29:00.000000000 +0000
12649 +++ linux-4.9.76-vs2.3.9.5/init/main.c  2018-01-10 02:50:49.000000000 +0000
12650 @@ -81,6 +81,7 @@
12651  #include <linux/proc_ns.h>
12652  #include <linux/io.h>
12653  #include <linux/kaiser.h>
12654 +#include <linux/vserver/percpu.h>
12655
12656  #include <asm/io.h>
12657  #include <asm/bugs.h>
12658 diff -NurpP --minimal linux-4.9.76/ipc/mqueue.c linux-4.9.76-vs2.3.9.5/ipc/mqueue.c
12659 --- linux-4.9.76/ipc/mqueue.c   2018-01-13 21:29:00.000000000 +0000
12660 +++ linux-4.9.76-vs2.3.9.5/ipc/mqueue.c 2018-01-10 02:50:49.000000000 +0000
12661 @@ -35,6 +35,8 @@
12662  #include <linux/ipc_namespace.h>
12663  #include <linux/user_namespace.h>
12664  #include <linux/slab.h>
12665 +#include <linux/vs_context.h>
12666 +#include <linux/vs_limit.h>
12667
12668  #include <net/sock.h>
12669  #include "util.h"
12670 @@ -75,6 +77,7 @@ struct mqueue_inode_info {
12671         struct pid *notify_owner;
12672         struct user_namespace *notify_user_ns;
12673         struct user_struct *user;       /* user who created, for accounting */
12674 +       struct vx_info *vxi;
12675         struct sock *notify_sock;
12676         struct sk_buff *notify_cookie;
12677
12678 @@ -230,6 +233,7 @@ static struct inode *mqueue_get_inode(st
12679         if (S_ISREG(mode)) {
12680                 struct mqueue_inode_info *info;
12681                 unsigned long mq_bytes, mq_treesize;
12682 +               struct vx_info *vxi = current_vx_info();
12683
12684                 inode->i_fop = &mqueue_file_operations;
12685                 inode->i_size = FILENT_SIZE;
12686 @@ -243,6 +247,7 @@ static struct inode *mqueue_get_inode(st
12687                 info->notify_user_ns = NULL;
12688                 info->qsize = 0;
12689                 info->user = NULL;      /* set when all is ok */
12690 +               info->vxi = NULL;
12691                 info->msg_tree = RB_ROOT;
12692                 info->node_cache = NULL;
12693                 memset(&info->attr, 0, sizeof(info->attr));
12694 @@ -276,17 +281,20 @@ static struct inode *mqueue_get_inode(st
12695
12696                 spin_lock(&mq_lock);
12697                 if (u->mq_bytes + mq_bytes < u->mq_bytes ||
12698 -                   u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) {
12699 +                   u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE) ||
12700 +                   !vx_ipcmsg_avail(vxi, mq_bytes)) {
12701                         spin_unlock(&mq_lock);
12702                         /* mqueue_evict_inode() releases info->messages */
12703                         ret = -EMFILE;
12704                         goto out_inode;
12705                 }
12706                 u->mq_bytes += mq_bytes;
12707 +               vx_ipcmsg_add(vxi, u, mq_bytes);
12708                 spin_unlock(&mq_lock);
12709
12710                 /* all is ok */
12711                 info->user = get_uid(u);
12712 +               info->vxi = get_vx_info(vxi);
12713         } else if (S_ISDIR(mode)) {
12714                 inc_nlink(inode);
12715                 /* Some things misbehave if size == 0 on a directory */
12716 @@ -396,8 +404,11 @@ static void mqueue_evict_inode(struct in
12717
12718         user = info->user;
12719         if (user) {
12720 +               struct vx_info *vxi = info->vxi;
12721 +
12722                 spin_lock(&mq_lock);
12723                 user->mq_bytes -= mq_bytes;
12724 +               vx_ipcmsg_sub(vxi, user, mq_bytes);
12725                 /*
12726                  * get_ns_from_inode() ensures that the
12727                  * (ipc_ns = sb->s_fs_info) is either a valid ipc_ns
12728 @@ -407,6 +418,7 @@ static void mqueue_evict_inode(struct in
12729                 if (ipc_ns)
12730                         ipc_ns->mq_queues_count--;
12731                 spin_unlock(&mq_lock);
12732 +               put_vx_info(vxi);
12733                 free_uid(user);
12734         }
12735         if (ipc_ns)
12736 diff -NurpP --minimal linux-4.9.76/ipc/msg.c linux-4.9.76-vs2.3.9.5/ipc/msg.c
12737 --- linux-4.9.76/ipc/msg.c      2016-12-11 19:17:54.000000000 +0000
12738 +++ linux-4.9.76-vs2.3.9.5/ipc/msg.c    2018-01-10 02:50:49.000000000 +0000
12739 @@ -37,6 +37,7 @@
12740  #include <linux/rwsem.h>
12741  #include <linux/nsproxy.h>
12742  #include <linux/ipc_namespace.h>
12743 +#include <linux/vs_base.h>
12744
12745  #include <asm/current.h>
12746  #include <linux/uaccess.h>
12747 @@ -124,6 +125,7 @@ static int newque(struct ipc_namespace *
12748
12749         msq->q_perm.mode = msgflg & S_IRWXUGO;
12750         msq->q_perm.key = key;
12751 +       msq->q_perm.xid = vx_current_xid();
12752
12753         msq->q_perm.security = NULL;
12754         retval = security_msg_queue_alloc(msq);
12755 diff -NurpP --minimal linux-4.9.76/ipc/namespace.c linux-4.9.76-vs2.3.9.5/ipc/namespace.c
12756 --- linux-4.9.76/ipc/namespace.c        2016-12-11 19:17:54.000000000 +0000
12757 +++ linux-4.9.76-vs2.3.9.5/ipc/namespace.c      2018-01-13 03:52:55.000000000 +0000
12758 @@ -13,6 +13,7 @@
12759  #include <linux/mount.h>
12760  #include <linux/user_namespace.h>
12761  #include <linux/proc_ns.h>
12762 +#include <linux/vserver/global.h>
12763
12764  #include "util.h"
12765
12766 @@ -59,6 +60,7 @@ static struct ipc_namespace *create_ipc_
12767         sem_init_ns(ns);
12768         msg_init_ns(ns);
12769         shm_init_ns(ns);
12770 +       atomic_inc(&vs_global_ipc_ns);
12771
12772         return ns;
12773
12774 @@ -121,6 +123,7 @@ static void free_ipc_ns(struct ipc_names
12775         dec_ipc_namespaces(ns->ucounts);
12776         put_user_ns(ns->user_ns);
12777         ns_free_inum(&ns->ns);
12778 +       atomic_dec(&vs_global_ipc_ns);
12779         kfree(ns);
12780  }
12781
12782 diff -NurpP --minimal linux-4.9.76/ipc/sem.c linux-4.9.76-vs2.3.9.5/ipc/sem.c
12783 --- linux-4.9.76/ipc/sem.c      2016-12-11 19:17:54.000000000 +0000
12784 +++ linux-4.9.76-vs2.3.9.5/ipc/sem.c    2018-01-10 02:50:49.000000000 +0000
12785 @@ -85,6 +85,8 @@
12786  #include <linux/rwsem.h>
12787  #include <linux/nsproxy.h>
12788  #include <linux/ipc_namespace.h>
12789 +#include <linux/vs_base.h>
12790 +#include <linux/vs_limit.h>
12791
12792  #include <linux/uaccess.h>
12793  #include "util.h"
12794 @@ -537,6 +539,7 @@ static int newary(struct ipc_namespace *
12795
12796         sma->sem_perm.mode = (semflg & S_IRWXUGO);
12797         sma->sem_perm.key = key;
12798 +       sma->sem_perm.xid = vx_current_xid();
12799
12800         sma->sem_perm.security = NULL;
12801         retval = security_sem_alloc(sma);
12802 @@ -567,6 +570,9 @@ static int newary(struct ipc_namespace *
12803                 return id;
12804         }
12805         ns->used_sems += nsems;
12806 +       /* FIXME: obsoleted? */
12807 +       vx_semary_inc(sma);
12808 +       vx_nsems_add(sma, nsems);
12809
12810         sem_unlock(sma, -1);
12811         rcu_read_unlock();
12812 @@ -1155,6 +1161,9 @@ static void freeary(struct ipc_namespace
12813
12814         wake_up_sem_queue_do(&tasks);
12815         ns->used_sems -= sma->sem_nsems;
12816 +       /* FIXME: obsoleted? */
12817 +       vx_nsems_sub(sma, sma->sem_nsems);
12818 +       vx_semary_dec(sma);
12819         ipc_rcu_putref(sma, sem_rcu_free);
12820  }
12821
12822 diff -NurpP --minimal linux-4.9.76/ipc/shm.c linux-4.9.76-vs2.3.9.5/ipc/shm.c
12823 --- linux-4.9.76/ipc/shm.c      2018-01-13 21:29:00.000000000 +0000
12824 +++ linux-4.9.76-vs2.3.9.5/ipc/shm.c    2018-01-10 02:50:49.000000000 +0000
12825 @@ -42,6 +42,8 @@
12826  #include <linux/nsproxy.h>
12827  #include <linux/mount.h>
12828  #include <linux/ipc_namespace.h>
12829 +#include <linux/vs_context.h>
12830 +#include <linux/vs_limit.h>
12831
12832  #include <linux/uaccess.h>
12833
12834 @@ -228,10 +230,14 @@ static void shm_open(struct vm_area_stru
12835  static void shm_destroy(struct ipc_namespace *ns, struct shmid_kernel *shp)
12836  {
12837         struct file *shm_file;
12838 +       struct vx_info *vxi = lookup_vx_info(shp->shm_perm.xid);
12839 +       int numpages = (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
12840
12841         shm_file = shp->shm_file;
12842         shp->shm_file = NULL;
12843 -       ns->shm_tot -= (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
12844 +       vx_ipcshm_sub(vxi, shp, numpages);
12845 +       ns->shm_tot -= numpages;
12846 +
12847         shm_rmid(ns, shp);
12848         shm_unlock(shp);
12849         if (!is_file_hugepages(shm_file))
12850 @@ -240,6 +246,7 @@ static void shm_destroy(struct ipc_names
12851                 user_shm_unlock(i_size_read(file_inode(shm_file)),
12852                                 shp->mlock_user);
12853         fput(shm_file);
12854 +       put_vx_info(vxi);
12855         ipc_rcu_putref(shp, shm_rcu_free);
12856  }
12857
12858 @@ -539,11 +546,15 @@ static int newseg(struct ipc_namespace *
12859                         ns->shm_tot + numpages > ns->shm_ctlall)
12860                 return -ENOSPC;
12861
12862 +       if (!vx_ipcshm_avail(current_vx_info(), numpages))
12863 +               return -ENOSPC;
12864 +
12865         shp = ipc_rcu_alloc(sizeof(*shp));
12866         if (!shp)
12867                 return -ENOMEM;
12868
12869         shp->shm_perm.key = key;
12870 +       shp->shm_perm.xid = vx_current_xid();
12871         shp->shm_perm.mode = (shmflg & S_IRWXUGO);
12872         shp->mlock_user = NULL;
12873
12874 @@ -614,6 +625,7 @@ static int newseg(struct ipc_namespace *
12875
12876         ipc_unlock_object(&shp->shm_perm);
12877         rcu_read_unlock();
12878 +       vx_ipcshm_add(current_vx_info(), key, numpages);
12879         return error;
12880
12881  no_id:
12882 diff -NurpP --minimal linux-4.9.76/kernel/Makefile linux-4.9.76-vs2.3.9.5/kernel/Makefile
12883 --- linux-4.9.76/kernel/Makefile        2018-01-13 21:29:00.000000000 +0000
12884 +++ linux-4.9.76-vs2.3.9.5/kernel/Makefile      2018-01-10 02:50:49.000000000 +0000
12885 @@ -39,6 +39,7 @@ obj-y += printk/
12886  obj-y += irq/
12887  obj-y += rcu/
12888  obj-y += livepatch/
12889 +obj-y += vserver/
12890
12891  obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
12892  obj-$(CONFIG_FREEZER) += freezer.o
12893 diff -NurpP --minimal linux-4.9.76/kernel/auditsc.c linux-4.9.76-vs2.3.9.5/kernel/auditsc.c
12894 --- linux-4.9.76/kernel/auditsc.c       2016-12-11 19:17:54.000000000 +0000
12895 +++ linux-4.9.76-vs2.3.9.5/kernel/auditsc.c     2018-01-10 02:50:49.000000000 +0000
12896 @@ -1965,7 +1965,7 @@ static int audit_set_loginuid_perm(kuid_
12897         if (is_audit_feature_set(AUDIT_FEATURE_LOGINUID_IMMUTABLE))
12898                 return -EPERM;
12899         /* it is set, you need permission */
12900 -       if (!capable(CAP_AUDIT_CONTROL))
12901 +       if (!vx_capable(CAP_AUDIT_CONTROL, VXC_AUDIT_CONTROL))
12902                 return -EPERM;
12903         /* reject if this is not an unset and we don't allow that */
12904         if (is_audit_feature_set(AUDIT_FEATURE_ONLY_UNSET_LOGINUID) && uid_valid(loginuid))
12905 diff -NurpP --minimal linux-4.9.76/kernel/capability.c linux-4.9.76-vs2.3.9.5/kernel/capability.c
12906 --- linux-4.9.76/kernel/capability.c    2018-01-13 21:29:00.000000000 +0000
12907 +++ linux-4.9.76-vs2.3.9.5/kernel/capability.c  2018-01-10 02:50:49.000000000 +0000
12908 @@ -17,6 +17,7 @@
12909  #include <linux/syscalls.h>
12910  #include <linux/pid_namespace.h>
12911  #include <linux/user_namespace.h>
12912 +#include <linux/vs_context.h>
12913  #include <asm/uaccess.h>
12914
12915  /*
12916 @@ -107,6 +108,7 @@ static int cap_validate_magic(cap_user_h
12917         return 0;
12918  }
12919
12920 +
12921  /*
12922   * The only thing that can change the capabilities of the current
12923   * process is the current process. As such, we can't be in this code
12924 @@ -344,6 +346,8 @@ bool has_ns_capability_noaudit(struct ta
12925         return (ret == 0);
12926  }
12927
12928 +#include <linux/vserver/base.h>
12929 +
12930  /**
12931   * has_capability_noaudit - Does a task have a capability (unaudited) in the
12932   * initial user ns
12933 diff -NurpP --minimal linux-4.9.76/kernel/compat.c linux-4.9.76-vs2.3.9.5/kernel/compat.c
12934 --- linux-4.9.76/kernel/compat.c        2016-12-11 19:17:54.000000000 +0000
12935 +++ linux-4.9.76-vs2.3.9.5/kernel/compat.c      2018-01-10 02:50:49.000000000 +0000
12936 @@ -27,6 +27,7 @@
12937  #include <linux/times.h>
12938  #include <linux/ptrace.h>
12939  #include <linux/gfp.h>
12940 +#include <linux/vs_time.h>
12941
12942  #include <asm/uaccess.h>
12943
12944 @@ -1059,7 +1060,7 @@ COMPAT_SYSCALL_DEFINE1(stime, compat_tim
12945         if (err)
12946                 return err;
12947
12948 -       do_settimeofday(&tv);
12949 +       vx_settimeofday(&tv);
12950         return 0;
12951  }
12952
12953 diff -NurpP --minimal linux-4.9.76/kernel/cred.c linux-4.9.76-vs2.3.9.5/kernel/cred.c
12954 --- linux-4.9.76/kernel/cred.c  2016-12-11 19:17:54.000000000 +0000
12955 +++ linux-4.9.76-vs2.3.9.5/kernel/cred.c        2018-01-10 02:50:49.000000000 +0000
12956 @@ -64,31 +64,6 @@ struct cred init_cred = {
12957         .group_info             = &init_groups,
12958  };
12959
12960 -static inline void set_cred_subscribers(struct cred *cred, int n)
12961 -{
12962 -#ifdef CONFIG_DEBUG_CREDENTIALS
12963 -       atomic_set(&cred->subscribers, n);
12964 -#endif
12965 -}
12966 -
12967 -static inline int read_cred_subscribers(const struct cred *cred)
12968 -{
12969 -#ifdef CONFIG_DEBUG_CREDENTIALS
12970 -       return atomic_read(&cred->subscribers);
12971 -#else
12972 -       return 0;
12973 -#endif
12974 -}
12975 -
12976 -static inline void alter_cred_subscribers(const struct cred *_cred, int n)
12977 -{
12978 -#ifdef CONFIG_DEBUG_CREDENTIALS
12979 -       struct cred *cred = (struct cred *) _cred;
12980 -
12981 -       atomic_add(n, &cred->subscribers);
12982 -#endif
12983 -}
12984 -
12985  /*
12986   * The RCU callback to actually dispose of a set of credentials
12987   */
12988 @@ -240,21 +215,16 @@ error:
12989   *
12990   * Call commit_creds() or abort_creds() to clean up.
12991   */
12992 -struct cred *prepare_creds(void)
12993 +struct cred *__prepare_creds(const struct cred *old)
12994  {
12995 -       struct task_struct *task = current;
12996 -       const struct cred *old;
12997         struct cred *new;
12998
12999 -       validate_process_creds();
13000 -
13001         new = kmem_cache_alloc(cred_jar, GFP_KERNEL);
13002         if (!new)
13003                 return NULL;
13004
13005         kdebug("prepare_creds() alloc %p", new);
13006
13007 -       old = task->cred;
13008         memcpy(new, old, sizeof(struct cred));
13009
13010         atomic_set(&new->usage, 1);
13011 @@ -283,6 +253,13 @@ error:
13012         abort_creds(new);
13013         return NULL;
13014  }
13015 +
13016 +struct cred *prepare_creds(void)
13017 +{
13018 +       validate_process_creds();
13019 +
13020 +       return __prepare_creds(current->cred);
13021 +}
13022  EXPORT_SYMBOL(prepare_creds);
13023
13024  /*
13025 diff -NurpP --minimal linux-4.9.76/kernel/exit.c linux-4.9.76-vs2.3.9.5/kernel/exit.c
13026 --- linux-4.9.76/kernel/exit.c  2016-12-11 19:17:54.000000000 +0000
13027 +++ linux-4.9.76-vs2.3.9.5/kernel/exit.c        2018-01-10 09:02:31.000000000 +0000
13028 @@ -48,6 +48,10 @@
13029  #include <linux/fs_struct.h>
13030  #include <linux/init_task.h>
13031  #include <linux/perf_event.h>
13032 +#include <linux/vs_limit.h>
13033 +#include <linux/vs_context.h>
13034 +#include <linux/vs_network.h>
13035 +#include <linux/vs_pid.h>
13036  #include <trace/events/sched.h>
13037  #include <linux/hw_breakpoint.h>
13038  #include <linux/oom.h>
13039 @@ -531,14 +535,24 @@ static struct task_struct *find_child_re
13040  {
13041         struct pid_namespace *pid_ns = task_active_pid_ns(father);
13042         struct task_struct *reaper = pid_ns->child_reaper;
13043 +       struct vx_info *vxi = task_get_vx_info(father);
13044 +
13045 +       if (vxi) {
13046 +               BUG_ON(!vxi->vx_reaper);
13047 +               if (vxi->vx_reaper != init_pid_ns.child_reaper &&
13048 +                   vxi->vx_reaper != father) {
13049 +                       reaper = vxi->vx_reaper;
13050 +                       goto out_put;
13051 +               }
13052 +       }
13053
13054         if (likely(reaper != father))
13055 -               return reaper;
13056 +               goto out_put;
13057
13058         reaper = find_alive_thread(father);
13059         if (reaper) {
13060                 pid_ns->child_reaper = reaper;
13061 -               return reaper;
13062 +               goto out_put;
13063         }
13064
13065         write_unlock_irq(&tasklist_lock);
13066 @@ -549,7 +563,10 @@ static struct task_struct *find_child_re
13067         zap_pid_ns_processes(pid_ns);
13068         write_lock_irq(&tasklist_lock);
13069
13070 -       return father;
13071 +       reaper = father;
13072 +out_put:
13073 +       put_vx_info(vxi);
13074 +       return reaper;
13075  }
13076
13077  /*
13078 @@ -637,9 +654,13 @@ static void forget_original_parent(struc
13079                 return;
13080
13081         reaper = find_new_reaper(father, reaper);
13082 -       list_for_each_entry(p, &father->children, sibling) {
13083 +       for (p = list_first_entry(&father->children, struct task_struct, sibling);
13084 +            &p->sibling != &father->children; ) {
13085 +               struct task_struct *next, *this_reaper = reaper;
13086 +               if (p == reaper)
13087 +                       this_reaper = task_active_pid_ns(reaper)->child_reaper;
13088                 for_each_thread(p, t) {
13089 -                       t->real_parent = reaper;
13090 +                       t->real_parent = this_reaper;
13091                         BUG_ON((!t->ptrace) != (t->parent == father));
13092                         if (likely(!t->ptrace))
13093                                 t->parent = t->real_parent;
13094 @@ -651,10 +672,13 @@ static void forget_original_parent(struc
13095                  * If this is a threaded reparent there is no need to
13096                  * notify anyone anything has happened.
13097                  */
13098 -               if (!same_thread_group(reaper, father))
13099 +               if (!same_thread_group(this_reaper, father))
13100                         reparent_leader(father, p, dead);
13101 +               next = list_next_entry(p, sibling);
13102 +               list_add(&p->sibling, &this_reaper->children);
13103 +               p = next;
13104         }
13105 -       list_splice_tail_init(&father->children, &reaper->children);
13106 +       INIT_LIST_HEAD(&father->children);
13107  }
13108
13109  /*
13110 @@ -844,6 +868,9 @@ void __noreturn do_exit(long code)
13111          */
13112         flush_ptrace_hw_breakpoint(tsk);
13113
13114 +       /* needs to stay before exit_notify() */
13115 +       exit_vx_info_early(tsk, code);
13116 +
13117         TASKS_RCU(preempt_disable());
13118         TASKS_RCU(tasks_rcu_i = __srcu_read_lock(&tasks_rcu_exit_srcu));
13119         TASKS_RCU(preempt_enable());
13120 @@ -883,6 +910,10 @@ void __noreturn do_exit(long code)
13121         exit_rcu();
13122         TASKS_RCU(__srcu_read_unlock(&tasks_rcu_exit_srcu, tasks_rcu_i));
13123
13124 +       /* needs to stay after exit_notify() */
13125 +       exit_vx_info(tsk, code);
13126 +       exit_nx_info(tsk);
13127 +
13128         do_task_dead();
13129  }
13130  EXPORT_SYMBOL_GPL(do_exit);
13131 diff -NurpP --minimal linux-4.9.76/kernel/fork.c linux-4.9.76-vs2.3.9.5/kernel/fork.c
13132 --- linux-4.9.76/kernel/fork.c  2018-01-13 21:29:00.000000000 +0000
13133 +++ linux-4.9.76-vs2.3.9.5/kernel/fork.c        2018-01-10 09:23:14.000000000 +0000
13134 @@ -77,6 +77,9 @@
13135  #include <linux/compiler.h>
13136  #include <linux/sysctl.h>
13137  #include <linux/kcov.h>
13138 +#include <linux/vs_context.h>
13139 +#include <linux/vs_network.h>
13140 +#include <linux/vs_limit.h>
13141
13142  #include <asm/pgtable.h>
13143  #include <asm/pgalloc.h>
13144 @@ -353,6 +356,8 @@ void free_task(struct task_struct *tsk)
13145         WARN_ON_ONCE(atomic_read(&tsk->stack_refcount) != 0);
13146  #endif
13147         rt_mutex_debug_task_free(tsk);
13148 +       clr_vx_info(&tsk->vx_info);
13149 +       clr_nx_info(&tsk->nx_info);
13150         ftrace_graph_exit_task(tsk);
13151         put_seccomp_filter(tsk);
13152         arch_release_task_struct(tsk);
13153 @@ -1475,6 +1480,8 @@ static __latent_entropy struct task_stru
13154  {
13155         int retval;
13156         struct task_struct *p;
13157 +       struct vx_info *vxi;
13158 +       struct nx_info *nxi;
13159
13160         if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))
13161                 return ERR_PTR(-EINVAL);
13162 @@ -1535,7 +1542,12 @@ static __latent_entropy struct task_stru
13163         DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
13164         DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
13165  #endif
13166 +       init_vx_info(&p->vx_info, current_vx_info());
13167 +       init_nx_info(&p->nx_info, current_nx_info());
13168 +
13169         retval = -EAGAIN;
13170 +       if (!vx_nproc_avail(1))
13171 +               goto bad_fork_free;
13172         if (atomic_read(&p->real_cred->user->processes) >=
13173                         task_rlimit(p, RLIMIT_NPROC)) {
13174                 if (p->real_cred->user != INIT_USER &&
13175 @@ -1832,6 +1844,18 @@ static __latent_entropy struct task_stru
13176         total_forks++;
13177         spin_unlock(&current->sighand->siglock);
13178         syscall_tracepoint_update(p);
13179 +
13180 +       /* p is copy of current */
13181 +       vxi = p->vx_info;
13182 +       if (vxi) {
13183 +               claim_vx_info(vxi, p);
13184 +               atomic_inc(&vxi->cvirt.nr_threads);
13185 +               atomic_inc(&vxi->cvirt.total_forks);
13186 +               vx_nproc_inc(p);
13187 +       }
13188 +       nxi = p->nx_info;
13189 +       if (nxi)
13190 +               claim_nx_info(nxi, p);
13191         write_unlock_irq(&tasklist_lock);
13192
13193         proc_fork_connector(p);
13194 diff -NurpP --minimal linux-4.9.76/kernel/kthread.c linux-4.9.76-vs2.3.9.5/kernel/kthread.c
13195 --- linux-4.9.76/kernel/kthread.c       2018-01-13 21:29:01.000000000 +0000
13196 +++ linux-4.9.76-vs2.3.9.5/kernel/kthread.c     2018-01-10 02:50:49.000000000 +0000
13197 @@ -19,6 +19,7 @@
13198  #include <linux/ptrace.h>
13199  #include <linux/uaccess.h>
13200  #include <linux/cgroup.h>
13201 +#include <linux/vs_pid.h>
13202  #include <trace/events/sched.h>
13203
13204  static DEFINE_SPINLOCK(kthread_create_lock);
13205 diff -NurpP --minimal linux-4.9.76/kernel/nsproxy.c linux-4.9.76-vs2.3.9.5/kernel/nsproxy.c
13206 --- linux-4.9.76/kernel/nsproxy.c       2016-12-11 19:17:54.000000000 +0000
13207 +++ linux-4.9.76-vs2.3.9.5/kernel/nsproxy.c     2018-01-14 06:25:23.000000000 +0000
13208 @@ -20,12 +20,15 @@
13209  #include <linux/mnt_namespace.h>
13210  #include <linux/utsname.h>
13211  #include <linux/pid_namespace.h>
13212 +#include <linux/vserver/global.h>
13213 +#include <linux/vserver/debug.h>
13214  #include <net/net_namespace.h>
13215  #include <linux/ipc_namespace.h>
13216  #include <linux/proc_ns.h>
13217  #include <linux/file.h>
13218  #include <linux/syscalls.h>
13219  #include <linux/cgroup.h>
13220 +#include "../fs/mount.h"
13221
13222  static struct kmem_cache *nsproxy_cachep;
13223
13224 @@ -50,8 +53,11 @@ static inline struct nsproxy *create_nsp
13225         struct nsproxy *nsproxy;
13226
13227         nsproxy = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL);
13228 -       if (nsproxy)
13229 +       if (nsproxy) {
13230                 atomic_set(&nsproxy->count, 1);
13231 +               atomic_inc(&vs_global_nsproxy);
13232 +       }
13233 +       vxdprintk(VXD_CBIT(space, 2), "create_nsproxy = %p[1]", nsproxy);
13234         return nsproxy;
13235  }
13236
13237 @@ -60,9 +66,12 @@ static inline struct nsproxy *create_nsp
13238   * Return the newly created nsproxy.  Do not attach this to the task,
13239   * leave it to the caller to do proper locking and attach it to task.
13240   */
13241 -static struct nsproxy *create_new_namespaces(unsigned long flags,
13242 -       struct task_struct *tsk, struct user_namespace *user_ns,
13243 -       struct fs_struct *new_fs)
13244 +static struct nsproxy *unshare_namespaces(
13245 +       unsigned long flags,
13246 +       struct nsproxy *orig,
13247 +       struct fs_struct *new_fs,
13248 +       struct user_namespace *new_user,
13249 +       struct pid_namespace *new_pid)
13250  {
13251         struct nsproxy *new_nsp;
13252         int err;
13253 @@ -71,39 +80,37 @@ static struct nsproxy *create_new_namesp
13254         if (!new_nsp)
13255                 return ERR_PTR(-ENOMEM);
13256
13257 -       new_nsp->mnt_ns = copy_mnt_ns(flags, tsk->nsproxy->mnt_ns, user_ns, new_fs);
13258 +       new_nsp->mnt_ns = copy_mnt_ns(flags, orig->mnt_ns, new_user, new_fs);
13259         if (IS_ERR(new_nsp->mnt_ns)) {
13260                 err = PTR_ERR(new_nsp->mnt_ns);
13261                 goto out_ns;
13262         }
13263
13264 -       new_nsp->uts_ns = copy_utsname(flags, user_ns, tsk->nsproxy->uts_ns);
13265 +       new_nsp->uts_ns = copy_utsname(flags, new_user, orig->uts_ns);
13266         if (IS_ERR(new_nsp->uts_ns)) {
13267                 err = PTR_ERR(new_nsp->uts_ns);
13268                 goto out_uts;
13269         }
13270
13271 -       new_nsp->ipc_ns = copy_ipcs(flags, user_ns, tsk->nsproxy->ipc_ns);
13272 +       new_nsp->ipc_ns = copy_ipcs(flags, new_user, orig->ipc_ns);
13273         if (IS_ERR(new_nsp->ipc_ns)) {
13274                 err = PTR_ERR(new_nsp->ipc_ns);
13275                 goto out_ipc;
13276         }
13277
13278 -       new_nsp->pid_ns_for_children =
13279 -               copy_pid_ns(flags, user_ns, tsk->nsproxy->pid_ns_for_children);
13280 +       new_nsp->pid_ns_for_children = copy_pid_ns(flags, new_user, new_pid);
13281         if (IS_ERR(new_nsp->pid_ns_for_children)) {
13282                 err = PTR_ERR(new_nsp->pid_ns_for_children);
13283                 goto out_pid;
13284         }
13285
13286 -       new_nsp->cgroup_ns = copy_cgroup_ns(flags, user_ns,
13287 -                                           tsk->nsproxy->cgroup_ns);
13288 +       new_nsp->cgroup_ns = copy_cgroup_ns(flags, new_user, orig->cgroup_ns);
13289         if (IS_ERR(new_nsp->cgroup_ns)) {
13290                 err = PTR_ERR(new_nsp->cgroup_ns);
13291                 goto out_cgroup;
13292         }
13293
13294 -       new_nsp->net_ns = copy_net_ns(flags, user_ns, tsk->nsproxy->net_ns);
13295 +       new_nsp->net_ns = copy_net_ns(flags, new_user, orig->net_ns);
13296         if (IS_ERR(new_nsp->net_ns)) {
13297                 err = PTR_ERR(new_nsp->net_ns);
13298                 goto out_net;
13299 @@ -130,6 +137,43 @@ out_ns:
13300         return ERR_PTR(err);
13301  }
13302
13303 +static struct nsproxy *create_new_namespaces(unsigned long flags,
13304 +       struct task_struct *tsk, struct user_namespace *user_ns,
13305 +       struct fs_struct *new_fs)
13306 +
13307 +{
13308 +       return unshare_namespaces(flags, tsk->nsproxy,
13309 +               new_fs, user_ns, task_active_pid_ns(tsk));
13310 +}
13311 +
13312 +/*
13313 + * copies the nsproxy, setting refcount to 1, and grabbing a
13314 + * reference to all contained namespaces.
13315 + */
13316 +struct nsproxy *copy_nsproxy(struct nsproxy *orig)
13317 +{
13318 +       struct nsproxy *ns = create_nsproxy();
13319 +
13320 +       if (ns) {
13321 +               memcpy(ns, orig, sizeof(struct nsproxy));
13322 +               atomic_set(&ns->count, 1);
13323 +
13324 +               if (ns->mnt_ns)
13325 +                       get_mnt_ns(ns->mnt_ns);
13326 +               if (ns->uts_ns)
13327 +                       get_uts_ns(ns->uts_ns);
13328 +               if (ns->ipc_ns)
13329 +                       get_ipc_ns(ns->ipc_ns);
13330 +               if (ns->pid_ns_for_children)
13331 +                       get_pid_ns(ns->pid_ns_for_children);
13332 +               if (ns->net_ns)
13333 +                       get_net(ns->net_ns);
13334 +               if (ns->cgroup_ns)
13335 +                       get_cgroup_ns(ns->cgroup_ns);
13336 +       }
13337 +       return ns;
13338 +}
13339 +
13340  /*
13341   * called from clone.  This now handles copy for nsproxy and all
13342   * namespaces therein.
13343 @@ -138,7 +182,10 @@ int copy_namespaces(unsigned long flags,
13344  {
13345         struct nsproxy *old_ns = tsk->nsproxy;
13346         struct user_namespace *user_ns = task_cred_xxx(tsk, user_ns);
13347 -       struct nsproxy *new_ns;
13348 +       struct nsproxy *new_ns = NULL;
13349 +
13350 +       vxdprintk(VXD_CBIT(space, 7), "copy_namespaces(0x%08lx,%p[%p])",
13351 +               flags, tsk, old_ns);
13352
13353         if (likely(!(flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
13354                               CLONE_NEWPID | CLONE_NEWNET |
13355 @@ -147,7 +194,7 @@ int copy_namespaces(unsigned long flags,
13356                 return 0;
13357         }
13358
13359 -       if (!ns_capable(user_ns, CAP_SYS_ADMIN))
13360 +       if (!vx_ns_can_unshare(user_ns, CAP_SYS_ADMIN, flags))
13361                 return -EPERM;
13362
13363         /*
13364 @@ -166,6 +213,9 @@ int copy_namespaces(unsigned long flags,
13365                 return  PTR_ERR(new_ns);
13366
13367         tsk->nsproxy = new_ns;
13368 +       vxdprintk(VXD_CBIT(space, 3),
13369 +               "copy_namespaces(0x%08lx,%p[%p]) = [%p]",
13370 +               flags, tsk, old_ns, new_ns);
13371         return 0;
13372  }
13373
13374 @@ -179,8 +229,10 @@ void free_nsproxy(struct nsproxy *ns)
13375                 put_ipc_ns(ns->ipc_ns);
13376         if (ns->pid_ns_for_children)
13377                 put_pid_ns(ns->pid_ns_for_children);
13378 +       if (ns->net_ns)
13379 +               put_net(ns->net_ns);
13380         put_cgroup_ns(ns->cgroup_ns);
13381 -       put_net(ns->net_ns);
13382 +       atomic_dec(&vs_global_nsproxy);
13383         kmem_cache_free(nsproxy_cachep, ns);
13384  }
13385
13386 @@ -194,12 +246,16 @@ int unshare_nsproxy_namespaces(unsigned
13387         struct user_namespace *user_ns;
13388         int err = 0;
13389
13390 +       vxdprintk(VXD_CBIT(space, 4),
13391 +               "unshare_nsproxy_namespaces(0x%08lx,[%p])",
13392 +               unshare_flags, current->nsproxy);
13393 +
13394         if (!(unshare_flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
13395                                CLONE_NEWNET | CLONE_NEWPID | CLONE_NEWCGROUP)))
13396                 return 0;
13397
13398         user_ns = new_cred ? new_cred->user_ns : current_user_ns();
13399 -       if (!ns_capable(user_ns, CAP_SYS_ADMIN))
13400 +       if (!vx_ns_can_unshare(user_ns, CAP_SYS_ADMIN, unshare_flags))
13401                 return -EPERM;
13402
13403         *new_nsp = create_new_namespaces(unshare_flags, current, user_ns,
13404 diff -NurpP --minimal linux-4.9.76/kernel/pid.c linux-4.9.76-vs2.3.9.5/kernel/pid.c
13405 --- linux-4.9.76/kernel/pid.c   2018-01-13 21:29:01.000000000 +0000
13406 +++ linux-4.9.76-vs2.3.9.5/kernel/pid.c 2018-01-10 02:50:49.000000000 +0000
13407 @@ -38,6 +38,7 @@
13408  #include <linux/syscalls.h>
13409  #include <linux/proc_ns.h>
13410  #include <linux/proc_fs.h>
13411 +#include <linux/vs_pid.h>
13412
13413  #define pid_hashfn(nr, ns)     \
13414         hash_long((unsigned long)nr + (unsigned long)ns, pidhash_shift)
13415 @@ -379,7 +380,7 @@ EXPORT_SYMBOL_GPL(find_pid_ns);
13416
13417  struct pid *find_vpid(int nr)
13418  {
13419 -       return find_pid_ns(nr, task_active_pid_ns(current));
13420 +       return find_pid_ns(vx_rmap_pid(nr), task_active_pid_ns(current));
13421  }
13422  EXPORT_SYMBOL_GPL(find_vpid);
13423
13424 @@ -435,6 +436,9 @@ void transfer_pid(struct task_struct *ol
13425  struct task_struct *pid_task(struct pid *pid, enum pid_type type)
13426  {
13427         struct task_struct *result = NULL;
13428 +
13429 +       if (type == __PIDTYPE_REALPID)
13430 +               type = PIDTYPE_PID;
13431         if (pid) {
13432                 struct hlist_node *first;
13433                 first = rcu_dereference_check(hlist_first_rcu(&pid->tasks[type]),
13434 @@ -453,7 +457,7 @@ struct task_struct *find_task_by_pid_ns(
13435  {
13436         RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
13437                          "find_task_by_pid_ns() needs rcu_read_lock() protection");
13438 -       return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);
13439 +       return pid_task(find_pid_ns(vx_rmap_pid(nr), ns), PIDTYPE_PID);
13440  }
13441
13442  struct task_struct *find_task_by_vpid(pid_t vnr)
13443 @@ -497,7 +501,7 @@ struct pid *find_get_pid(pid_t nr)
13444  }
13445  EXPORT_SYMBOL_GPL(find_get_pid);
13446
13447 -pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)
13448 +pid_t pid_unmapped_nr_ns(struct pid *pid, struct pid_namespace *ns)
13449  {
13450         struct upid *upid;
13451         pid_t nr = 0;
13452 @@ -511,6 +515,11 @@ pid_t pid_nr_ns(struct pid *pid, struct
13453  }
13454  EXPORT_SYMBOL_GPL(pid_nr_ns);
13455
13456 +pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)
13457 +{
13458 +       return vx_map_pid(pid_unmapped_nr_ns(pid, ns));
13459 +}
13460 +
13461  pid_t pid_vnr(struct pid *pid)
13462  {
13463         return pid_nr_ns(pid, task_active_pid_ns(current));
13464 diff -NurpP --minimal linux-4.9.76/kernel/pid_namespace.c linux-4.9.76-vs2.3.9.5/kernel/pid_namespace.c
13465 --- linux-4.9.76/kernel/pid_namespace.c 2018-01-13 21:29:01.000000000 +0000
13466 +++ linux-4.9.76-vs2.3.9.5/kernel/pid_namespace.c       2018-01-10 02:50:49.000000000 +0000
13467 @@ -18,6 +18,7 @@
13468  #include <linux/proc_ns.h>
13469  #include <linux/reboot.h>
13470  #include <linux/export.h>
13471 +#include <linux/vserver/global.h>
13472
13473  struct pid_cache {
13474         int nr_ids;
13475 @@ -124,6 +125,7 @@ static struct pid_namespace *create_pid_
13476         ns->ns.ops = &pidns_operations;
13477
13478         kref_init(&ns->kref);
13479 +       atomic_inc(&vs_global_pid_ns);
13480         ns->level = level;
13481         ns->parent = get_pid_ns(parent_pid_ns);
13482         ns->user_ns = get_user_ns(user_ns);
13483 @@ -142,6 +144,7 @@ static struct pid_namespace *create_pid_
13484  out_free_map:
13485         kfree(ns->pidmap[0].page);
13486  out_free:
13487 +       atomic_dec(&vs_global_pid_ns);
13488         kmem_cache_free(pid_ns_cachep, ns);
13489  out_dec:
13490         dec_pid_namespaces(ucounts);
13491 diff -NurpP --minimal linux-4.9.76/kernel/printk/printk.c linux-4.9.76-vs2.3.9.5/kernel/printk/printk.c
13492 --- linux-4.9.76/kernel/printk/printk.c 2018-01-13 21:29:01.000000000 +0000
13493 +++ linux-4.9.76-vs2.3.9.5/kernel/printk/printk.c       2018-01-10 02:50:49.000000000 +0000
13494 @@ -45,6 +45,7 @@
13495  #include <linux/utsname.h>
13496  #include <linux/ctype.h>
13497  #include <linux/uio.h>
13498 +#include <linux/vs_cvirt.h>
13499
13500  #include <asm/uaccess.h>
13501  #include <asm/sections.h>
13502 @@ -612,7 +613,7 @@ int check_syslog_permissions(int type, i
13503                 goto ok;
13504
13505         if (syslog_action_restricted(type)) {
13506 -               if (capable(CAP_SYSLOG))
13507 +               if (vx_capable(CAP_SYSLOG, VXC_SYSLOG))
13508                         goto ok;
13509                 /*
13510                  * For historical reasons, accept CAP_SYS_ADMIN too, with
13511 @@ -1432,12 +1433,9 @@ int do_syslog(int type, char __user *buf
13512         if (error)
13513                 goto out;
13514
13515 -       switch (type) {
13516 -       case SYSLOG_ACTION_CLOSE:       /* Close log */
13517 -               break;
13518 -       case SYSLOG_ACTION_OPEN:        /* Open log */
13519 -               break;
13520 -       case SYSLOG_ACTION_READ:        /* Read from log */
13521 +       if ((type == SYSLOG_ACTION_READ) ||
13522 +           (type == SYSLOG_ACTION_READ_ALL) ||
13523 +           (type == SYSLOG_ACTION_READ_CLEAR)) {
13524                 error = -EINVAL;
13525                 if (!buf || len < 0)
13526                         goto out;
13527 @@ -1448,6 +1446,16 @@ int do_syslog(int type, char __user *buf
13528                         error = -EFAULT;
13529                         goto out;
13530                 }
13531 +       }
13532 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
13533 +               return vx_do_syslog(type, buf, len);
13534 +
13535 +       switch (type) {
13536 +       case SYSLOG_ACTION_CLOSE:       /* Close log */
13537 +               break;
13538 +       case SYSLOG_ACTION_OPEN:        /* Open log */
13539 +               break;
13540 +       case SYSLOG_ACTION_READ:        /* Read from log */
13541                 error = wait_event_interruptible(log_wait,
13542                                                  syslog_seq != log_next_seq);
13543                 if (error)
13544 @@ -1460,16 +1468,6 @@ int do_syslog(int type, char __user *buf
13545                 /* FALL THRU */
13546         /* Read last kernel messages */
13547         case SYSLOG_ACTION_READ_ALL:
13548 -               error = -EINVAL;
13549 -               if (!buf || len < 0)
13550 -                       goto out;
13551 -               error = 0;
13552 -               if (!len)
13553 -                       goto out;
13554 -               if (!access_ok(VERIFY_WRITE, buf, len)) {
13555 -                       error = -EFAULT;
13556 -                       goto out;
13557 -               }
13558                 error = syslog_print_all(buf, len, clear);
13559                 break;
13560         /* Clear ring buffer */
13561 diff -NurpP --minimal linux-4.9.76/kernel/ptrace.c linux-4.9.76-vs2.3.9.5/kernel/ptrace.c
13562 --- linux-4.9.76/kernel/ptrace.c        2018-01-13 21:29:01.000000000 +0000
13563 +++ linux-4.9.76-vs2.3.9.5/kernel/ptrace.c      2018-01-10 02:50:49.000000000 +0000
13564 @@ -23,6 +23,7 @@
13565  #include <linux/syscalls.h>
13566  #include <linux/uaccess.h>
13567  #include <linux/regset.h>
13568 +#include <linux/vs_context.h>
13569  #include <linux/hw_breakpoint.h>
13570  #include <linux/cn_proc.h>
13571  #include <linux/compat.h>
13572 @@ -325,6 +326,11 @@ ok:
13573              !ptrace_has_cap(mm->user_ns, mode)))
13574             return -EPERM;
13575
13576 +       if (!vx_check(task->xid, VS_ADMIN_P|VS_WATCH_P|VS_IDENT))
13577 +               return -EPERM;
13578 +       if (!vx_check(task->xid, VS_IDENT) &&
13579 +               !task_vx_flags(task, VXF_STATE_ADMIN, 0))
13580 +               return -EACCES;
13581         return security_ptrace_access_check(task, mode);
13582  }
13583
13584 diff -NurpP --minimal linux-4.9.76/kernel/reboot.c linux-4.9.76-vs2.3.9.5/kernel/reboot.c
13585 --- linux-4.9.76/kernel/reboot.c        2016-12-11 19:17:54.000000000 +0000
13586 +++ linux-4.9.76-vs2.3.9.5/kernel/reboot.c      2018-01-10 02:50:49.000000000 +0000
13587 @@ -16,6 +16,7 @@
13588  #include <linux/syscalls.h>
13589  #include <linux/syscore_ops.h>
13590  #include <linux/uaccess.h>
13591 +#include <linux/vs_pid.h>
13592
13593  /*
13594   * this indicates whether you can reboot with ctrl-alt-del: the default is yes
13595 @@ -269,6 +270,8 @@ EXPORT_SYMBOL_GPL(kernel_power_off);
13596
13597  static DEFINE_MUTEX(reboot_mutex);
13598
13599 +long vs_reboot(unsigned int, void __user *);
13600 +
13601  /*
13602   * Reboot system call: for obvious reasons only root may call it,
13603   * and even root needs to set up some magic numbers in the registers
13604 @@ -311,6 +314,9 @@ SYSCALL_DEFINE4(reboot, int, magic1, int
13605         if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !pm_power_off)
13606                 cmd = LINUX_REBOOT_CMD_HALT;
13607
13608 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
13609 +               return vs_reboot(cmd, arg);
13610 +
13611         mutex_lock(&reboot_mutex);
13612         switch (cmd) {
13613         case LINUX_REBOOT_CMD_RESTART:
13614 diff -NurpP --minimal linux-4.9.76/kernel/sched/core.c linux-4.9.76-vs2.3.9.5/kernel/sched/core.c
13615 --- linux-4.9.76/kernel/sched/core.c    2018-01-13 21:29:01.000000000 +0000
13616 +++ linux-4.9.76-vs2.3.9.5/kernel/sched/core.c  2018-01-10 09:06:27.000000000 +0000
13617 @@ -75,6 +75,8 @@
13618  #include <linux/compiler.h>
13619  #include <linux/frame.h>
13620  #include <linux/prefetch.h>
13621 +#include <linux/vs_sched.h>
13622 +#include <linux/vs_cvirt.h>
13623
13624  #include <asm/switch_to.h>
13625  #include <asm/tlb.h>
13626 @@ -3429,6 +3431,7 @@ void __noreturn do_task_dead(void)
13627         __set_current_state(TASK_DEAD);
13628         current->flags |= PF_NOFREEZE;  /* tell freezer to ignore us */
13629         __schedule(false);
13630 +       printk("bad task: %p [%lx]\n", current, current->state);
13631         BUG();
13632         /* Avoid "noreturn function does return".  */
13633         for (;;)
13634 @@ -3822,7 +3825,7 @@ SYSCALL_DEFINE1(nice, int, increment)
13635
13636         nice = clamp_val(nice, MIN_NICE, MAX_NICE);
13637         if (increment < 0 && !can_nice(current, nice))
13638 -               return -EPERM;
13639 +               return vx_flags(VXF_IGNEG_NICE, 0) ? 0 : -EPERM;
13640
13641         retval = security_task_setnice(current, nice);
13642         if (retval)
13643 diff -NurpP --minimal linux-4.9.76/kernel/sched/cputime.c linux-4.9.76-vs2.3.9.5/kernel/sched/cputime.c
13644 --- linux-4.9.76/kernel/sched/cputime.c 2016-12-11 19:17:54.000000000 +0000
13645 +++ linux-4.9.76-vs2.3.9.5/kernel/sched/cputime.c       2018-01-10 02:50:49.000000000 +0000
13646 @@ -4,6 +4,7 @@
13647  #include <linux/kernel_stat.h>
13648  #include <linux/static_key.h>
13649  #include <linux/context_tracking.h>
13650 +#include <linux/vs_sched.h>
13651  #include "sched.h"
13652  #ifdef CONFIG_PARAVIRT
13653  #include <asm/paravirt.h>
13654 @@ -133,14 +134,17 @@ static inline void task_group_account_fi
13655  void account_user_time(struct task_struct *p, cputime_t cputime,
13656                        cputime_t cputime_scaled)
13657  {
13658 +       struct vx_info *vxi = p->vx_info;  /* p is _always_ current */
13659 +       int nice = (task_nice(p) > 0);
13660         int index;
13661
13662         /* Add user time to process. */
13663         p->utime += cputime;
13664         p->utimescaled += cputime_scaled;
13665 +       vx_account_user(vxi, cputime, nice);
13666         account_group_user_time(p, cputime);
13667
13668 -       index = (task_nice(p) > 0) ? CPUTIME_NICE : CPUTIME_USER;
13669 +       index = (nice) ? CPUTIME_NICE : CPUTIME_USER;
13670
13671         /* Add user time to cpustat. */
13672         task_group_account_field(p, index, (__force u64) cputime);
13673 @@ -187,9 +191,12 @@ static inline
13674  void __account_system_time(struct task_struct *p, cputime_t cputime,
13675                         cputime_t cputime_scaled, int index)
13676  {
13677 +       struct vx_info *vxi = p->vx_info;  /* p is _always_ current */
13678 +
13679         /* Add system time to process. */
13680         p->stime += cputime;
13681         p->stimescaled += cputime_scaled;
13682 +       vx_account_system(vxi, cputime, 0 /* do we have idle time? */);
13683         account_group_system_time(p, cputime);
13684
13685         /* Add system time to cpustat. */
13686 diff -NurpP --minimal linux-4.9.76/kernel/sched/fair.c linux-4.9.76-vs2.3.9.5/kernel/sched/fair.c
13687 --- linux-4.9.76/kernel/sched/fair.c    2018-01-13 21:29:01.000000000 +0000
13688 +++ linux-4.9.76-vs2.3.9.5/kernel/sched/fair.c  2018-01-10 02:50:49.000000000 +0000
13689 @@ -30,6 +30,7 @@
13690  #include <linux/mempolicy.h>
13691  #include <linux/migrate.h>
13692  #include <linux/task_work.h>
13693 +#include <linux/vs_cvirt.h>
13694
13695  #include <trace/events/sched.h>
13696
13697 @@ -3410,6 +3411,8 @@ enqueue_entity(struct cfs_rq *cfs_rq, st
13698                 __enqueue_entity(cfs_rq, se);
13699         se->on_rq = 1;
13700
13701 +       if (entity_is_task(se))
13702 +               vx_activate_task(task_of(se));
13703         if (cfs_rq->nr_running == 1) {
13704                 list_add_leaf_cfs_rq(cfs_rq);
13705                 check_enqueue_throttle(cfs_rq);
13706 @@ -3479,6 +3482,8 @@ dequeue_entity(struct cfs_rq *cfs_rq, st
13707         if (se != cfs_rq->curr)
13708                 __dequeue_entity(cfs_rq, se);
13709         se->on_rq = 0;
13710 +       if (entity_is_task(se))
13711 +               vx_deactivate_task(task_of(se));
13712         account_entity_dequeue(cfs_rq, se);
13713
13714         /*
13715 diff -NurpP --minimal linux-4.9.76/kernel/signal.c linux-4.9.76-vs2.3.9.5/kernel/signal.c
13716 --- linux-4.9.76/kernel/signal.c        2018-01-13 21:29:01.000000000 +0000
13717 +++ linux-4.9.76-vs2.3.9.5/kernel/signal.c      2018-01-13 21:30:31.000000000 +0000
13718 @@ -34,6 +34,8 @@
13719  #include <linux/compat.h>
13720  #include <linux/cn_proc.h>
13721  #include <linux/compiler.h>
13722 +#include <linux/vs_context.h>
13723 +#include <linux/vs_pid.h>
13724
13725  #define CREATE_TRACE_POINTS
13726  #include <trace/events/signal.h>
13727 @@ -726,9 +728,18 @@ static int check_kill_permission(int sig
13728         struct pid *sid;
13729         int error;
13730
13731 +       vxdprintk(VXD_CBIT(misc, 7),
13732 +               "check_kill_permission(%d,%p,%p[#%u,%u])",
13733 +               sig, info, t, vx_task_xid(t), t->pid);
13734 +
13735         if (!valid_signal(sig))
13736                 return -EINVAL;
13737
13738 +/*     FIXME: needed? if so, why?
13739 +       if ((info != SEND_SIG_NOINFO) &&
13740 +               (is_si_special(info) || !si_fromuser(info)))
13741 +               goto skip;      */
13742 +
13743         if (!si_fromuser(info))
13744                 return 0;
13745
13746 @@ -752,6 +763,20 @@ static int check_kill_permission(int sig
13747                 }
13748         }
13749
13750 +       error = -EPERM;
13751 +       if (t->pid == 1 && current->xid)
13752 +               return error;
13753 +
13754 +       error = -ESRCH;
13755 +       /* FIXME: we shouldn't return ESRCH ever, to avoid
13756 +                 loops, maybe ENOENT or EACCES? */
13757 +       if (!vx_check(vx_task_xid(t), VS_WATCH_P | VS_IDENT)) {
13758 +               vxdprintk(current->xid || VXD_CBIT(misc, 7),
13759 +                       "signal %d[%p] xid mismatch %p[#%u,%u] xid=#%u",
13760 +                       sig, info, t, vx_task_xid(t), t->pid, current->xid);
13761 +               return error;
13762 +       }
13763 +/* skip: */
13764         return security_task_kill(t, info, sig, 0);
13765  }
13766
13767 @@ -1303,8 +1328,14 @@ int kill_pid_info(int sig, struct siginf
13768         for (;;) {
13769                 rcu_read_lock();
13770                 p = pid_task(pid, PIDTYPE_PID);
13771 -               if (p)
13772 -                       error = group_send_sig_info(sig, info, p);
13773 +               if (p) {
13774 +                       if (vx_check(vx_task_xid(p), VS_IDENT))
13775 +                               error = group_send_sig_info(sig, info, p);
13776 +                       else {
13777 +                               rcu_read_unlock();
13778 +                               return -ESRCH;
13779 +                       }
13780 +               }
13781                 rcu_read_unlock();
13782                 if (likely(!p || error != -ESRCH))
13783                         return error;
13784 @@ -1349,7 +1380,7 @@ int kill_pid_info_as_cred(int sig, struc
13785
13786         rcu_read_lock();
13787         p = pid_task(pid, PIDTYPE_PID);
13788 -       if (!p) {
13789 +       if (!p || !vx_check(vx_task_xid(p), VS_IDENT)) {
13790                 ret = -ESRCH;
13791                 goto out_unlock;
13792         }
13793 @@ -1401,8 +1432,10 @@ static int kill_something_info(int sig,
13794                 struct task_struct * p;
13795
13796                 for_each_process(p) {
13797 -                       if (task_pid_vnr(p) > 1 &&
13798 -                                       !same_thread_group(p, current)) {
13799 +                       if (vx_check(vx_task_xid(p), VS_ADMIN|VS_IDENT) &&
13800 +                               task_pid_vnr(p) > 1 &&
13801 +                               !same_thread_group(p, current) &&
13802 +                               !vx_current_initpid(p->pid)) {
13803                                 int err = group_send_sig_info(sig, info, p);
13804                                 ++count;
13805                                 if (err != -EPERM)
13806 @@ -2255,6 +2288,11 @@ relock:
13807                                 !sig_kernel_only(signr))
13808                         continue;
13809
13810 +               /* virtual init is protected against user signals */
13811 +               if ((ksig->info.si_code == SI_USER) &&
13812 +                       vx_current_initpid(current->pid))
13813 +                       continue;
13814 +
13815                 if (sig_kernel_stop(signr)) {
13816                         /*
13817                          * The default action is to stop all threads in
13818 diff -NurpP --minimal linux-4.9.76/kernel/softirq.c linux-4.9.76-vs2.3.9.5/kernel/softirq.c
13819 --- linux-4.9.76/kernel/softirq.c       2016-12-11 19:17:54.000000000 +0000
13820 +++ linux-4.9.76-vs2.3.9.5/kernel/softirq.c     2018-01-10 02:50:49.000000000 +0000
13821 @@ -26,6 +26,7 @@
13822  #include <linux/smpboot.h>
13823  #include <linux/tick.h>
13824  #include <linux/irq.h>
13825 +#include <linux/vs_context.h>
13826
13827  #define CREATE_TRACE_POINTS
13828  #include <trace/events/irq.h>
13829 diff -NurpP --minimal linux-4.9.76/kernel/sys.c linux-4.9.76-vs2.3.9.5/kernel/sys.c
13830 --- linux-4.9.76/kernel/sys.c   2016-12-11 19:17:54.000000000 +0000
13831 +++ linux-4.9.76-vs2.3.9.5/kernel/sys.c 2018-01-10 02:50:49.000000000 +0000
13832 @@ -54,6 +54,7 @@
13833  #include <linux/cred.h>
13834
13835  #include <linux/kmsg_dump.h>
13836 +#include <linux/vs_pid.h>
13837  /* Move somewhere else to avoid recompiling? */
13838  #include <generated/utsrelease.h>
13839
13840 @@ -157,7 +158,10 @@ static int set_one_prio(struct task_stru
13841                 goto out;
13842         }
13843         if (niceval < task_nice(p) && !can_nice(p, niceval)) {
13844 -               error = -EACCES;
13845 +               if (vx_flags(VXF_IGNEG_NICE, 0))
13846 +                       error = 0;
13847 +               else
13848 +                       error = -EACCES;
13849                 goto out;
13850         }
13851         no_nice = security_task_setnice(p, niceval);
13852 @@ -208,6 +212,8 @@ SYSCALL_DEFINE3(setpriority, int, which,
13853                 else
13854                         pgrp = task_pgrp(current);
13855                 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
13856 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13857 +                               continue;
13858                         error = set_one_prio(p, niceval, error);
13859                 } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
13860                 break;
13861 @@ -274,6 +280,8 @@ SYSCALL_DEFINE2(getpriority, int, which,
13862                 else
13863                         pgrp = task_pgrp(current);
13864                 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
13865 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13866 +                               continue;
13867                         niceval = nice_to_rlimit(task_nice(p));
13868                         if (niceval > retval)
13869                                 retval = niceval;
13870 @@ -290,6 +298,8 @@ SYSCALL_DEFINE2(getpriority, int, which,
13871                                 goto out_unlock;        /* No processes for this user */
13872                 }
13873                 do_each_thread(g, p) {
13874 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13875 +                               continue;
13876                         if (uid_eq(task_uid(p), uid) && task_pid_vnr(p)) {
13877                                 niceval = nice_to_rlimit(task_nice(p));
13878                                 if (niceval > retval)
13879 @@ -1217,7 +1227,8 @@ SYSCALL_DEFINE2(sethostname, char __user
13880         int errno;
13881         char tmp[__NEW_UTS_LEN];
13882
13883 -       if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
13884 +       if (!vx_ns_capable(current->nsproxy->uts_ns->user_ns,
13885 +               CAP_SYS_ADMIN, VXC_SET_UTSNAME))
13886                 return -EPERM;
13887
13888         if (len < 0 || len > __NEW_UTS_LEN)
13889 @@ -1268,7 +1279,8 @@ SYSCALL_DEFINE2(setdomainname, char __us
13890         int errno;
13891         char tmp[__NEW_UTS_LEN];
13892
13893 -       if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
13894 +       if (!vx_ns_capable(current->nsproxy->uts_ns->user_ns,
13895 +               CAP_SYS_ADMIN, VXC_SET_UTSNAME))
13896                 return -EPERM;
13897         if (len < 0 || len > __NEW_UTS_LEN)
13898                 return -EINVAL;
13899 @@ -1386,7 +1398,7 @@ int do_prlimit(struct task_struct *tsk,
13900                 /* Keep the capable check against init_user_ns until
13901                    cgroups can contain all limits */
13902                 if (new_rlim->rlim_max > rlim->rlim_max &&
13903 -                               !capable(CAP_SYS_RESOURCE))
13904 +                       !vx_capable(CAP_SYS_RESOURCE, VXC_SET_RLIMIT))
13905                         retval = -EPERM;
13906                 if (!retval)
13907                         retval = security_task_setrlimit(tsk->group_leader,
13908 @@ -1439,7 +1451,8 @@ static int check_prlimit_permission(stru
13909             gid_eq(cred->gid, tcred->sgid) &&
13910             gid_eq(cred->gid, tcred->gid))
13911                 return 0;
13912 -       if (ns_capable(tcred->user_ns, CAP_SYS_RESOURCE))
13913 +       if (vx_ns_capable(tcred->user_ns,
13914 +               CAP_SYS_RESOURCE, VXC_SET_RLIMIT))
13915                 return 0;
13916
13917         return -EPERM;
13918 diff -NurpP --minimal linux-4.9.76/kernel/sysctl.c linux-4.9.76-vs2.3.9.5/kernel/sysctl.c
13919 --- linux-4.9.76/kernel/sysctl.c        2018-01-13 21:29:01.000000000 +0000
13920 +++ linux-4.9.76-vs2.3.9.5/kernel/sysctl.c      2018-01-10 02:50:49.000000000 +0000
13921 @@ -87,6 +87,7 @@
13922  #if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT)
13923  #include <linux/lockdep.h>
13924  #endif
13925 +extern char vshelper_path[];
13926  #ifdef CONFIG_CHR_DEV_SG
13927  #include <scsi/sg.h>
13928  #endif
13929 @@ -282,6 +283,13 @@ static int max_extfrag_threshold = 1000;
13930
13931  static struct ctl_table kern_table[] = {
13932         {
13933 +               .procname       = "vshelper",
13934 +               .data           = &vshelper_path,
13935 +               .maxlen         = 256,
13936 +               .mode           = 0644,
13937 +               .proc_handler   = proc_dostring,
13938 +       },
13939 +       {
13940                 .procname       = "sched_child_runs_first",
13941                 .data           = &sysctl_sched_child_runs_first,
13942                 .maxlen         = sizeof(unsigned int),
13943 @@ -1426,7 +1434,6 @@ static struct ctl_table vm_table[] = {
13944                 .extra1         = &zero,
13945                 .extra2         = &one,
13946         },
13947 -
13948  #endif /* CONFIG_COMPACTION */
13949         {
13950                 .procname       = "min_free_kbytes",
13951 diff -NurpP --minimal linux-4.9.76/kernel/sysctl_binary.c linux-4.9.76-vs2.3.9.5/kernel/sysctl_binary.c
13952 --- linux-4.9.76/kernel/sysctl_binary.c 2016-12-11 19:17:54.000000000 +0000
13953 +++ linux-4.9.76-vs2.3.9.5/kernel/sysctl_binary.c       2018-01-10 02:50:49.000000000 +0000
13954 @@ -74,6 +74,7 @@ static const struct bin_table bin_kern_t
13955
13956         { CTL_INT,      KERN_PANIC,                     "panic" },
13957         { CTL_INT,      KERN_REALROOTDEV,               "real-root-dev" },
13958 +       { CTL_STR,      KERN_VSHELPER,                  "vshelper" },
13959
13960         { CTL_STR,      KERN_SPARC_REBOOT,              "reboot-cmd" },
13961         { CTL_INT,      KERN_CTLALTDEL,                 "ctrl-alt-del" },
13962 diff -NurpP --minimal linux-4.9.76/kernel/time/posix-timers.c linux-4.9.76-vs2.3.9.5/kernel/time/posix-timers.c
13963 --- linux-4.9.76/kernel/time/posix-timers.c     2016-12-11 19:17:54.000000000 +0000
13964 +++ linux-4.9.76-vs2.3.9.5/kernel/time/posix-timers.c   2018-01-10 02:50:49.000000000 +0000
13965 @@ -48,6 +48,7 @@
13966  #include <linux/workqueue.h>
13967  #include <linux/export.h>
13968  #include <linux/hashtable.h>
13969 +#include <linux/vs_context.h>
13970
13971  #include "timekeeping.h"
13972
13973 @@ -407,6 +408,7 @@ int posix_timer_event(struct k_itimer *t
13974  {
13975         struct task_struct *task;
13976         int shared, ret = -1;
13977 +
13978         /*
13979          * FIXME: if ->sigq is queued we can race with
13980          * dequeue_signal()->do_schedule_next_timer().
13981 @@ -423,10 +425,18 @@ int posix_timer_event(struct k_itimer *t
13982         rcu_read_lock();
13983         task = pid_task(timr->it_pid, PIDTYPE_PID);
13984         if (task) {
13985 +               struct vx_info_save vxis;
13986 +               struct vx_info *vxi;
13987 +
13988 +               vxi = get_vx_info(task->vx_info);
13989 +               enter_vx_info(vxi, &vxis);
13990                 shared = !(timr->it_sigev_notify & SIGEV_THREAD_ID);
13991                 ret = send_sigqueue(timr->sigq, task, shared);
13992 +               leave_vx_info(&vxis);
13993 +               put_vx_info(vxi);
13994         }
13995         rcu_read_unlock();
13996 +
13997         /* If we failed to send the signal the timer stops. */
13998         return ret > 0;
13999  }
14000 diff -NurpP --minimal linux-4.9.76/kernel/time/time.c linux-4.9.76-vs2.3.9.5/kernel/time/time.c
14001 --- linux-4.9.76/kernel/time/time.c     2016-12-11 19:17:54.000000000 +0000
14002 +++ linux-4.9.76-vs2.3.9.5/kernel/time/time.c   2018-01-10 09:31:11.000000000 +0000
14003 @@ -37,6 +37,7 @@
14004  #include <linux/fs.h>
14005  #include <linux/math64.h>
14006  #include <linux/ptrace.h>
14007 +#include <linux/vs_time.h>
14008
14009  #include <asm/uaccess.h>
14010  #include <asm/unistd.h>
14011 @@ -93,7 +94,7 @@ SYSCALL_DEFINE1(stime, time_t __user *,
14012         if (err)
14013                 return err;
14014
14015 -       do_settimeofday(&tv);
14016 +       vx_settimeofday(&tv);
14017         return 0;
14018  }
14019
14020 @@ -186,7 +187,7 @@ int do_sys_settimeofday64(const struct t
14021                 }
14022         }
14023         if (tv)
14024 -               return do_settimeofday64(tv);
14025 +               return vx_settimeofday64(tv);
14026         return 0;
14027  }
14028
14029 diff -NurpP --minimal linux-4.9.76/kernel/time/timekeeping.c linux-4.9.76-vs2.3.9.5/kernel/time/timekeeping.c
14030 --- linux-4.9.76/kernel/time/timekeeping.c      2018-01-13 21:29:01.000000000 +0000
14031 +++ linux-4.9.76-vs2.3.9.5/kernel/time/timekeeping.c    2018-01-10 02:50:49.000000000 +0000
14032 @@ -23,6 +23,7 @@
14033  #include <linux/stop_machine.h>
14034  #include <linux/pvclock_gtod.h>
14035  #include <linux/compiler.h>
14036 +#include <linux/vs_time.h>
14037
14038  #include "tick-internal.h"
14039  #include "ntp_internal.h"
14040 diff -NurpP --minimal linux-4.9.76/kernel/time/timer.c linux-4.9.76-vs2.3.9.5/kernel/time/timer.c
14041 --- linux-4.9.76/kernel/time/timer.c    2018-01-13 21:29:01.000000000 +0000
14042 +++ linux-4.9.76-vs2.3.9.5/kernel/time/timer.c  2018-01-10 02:50:49.000000000 +0000
14043 @@ -42,6 +42,10 @@
14044  #include <linux/sched/sysctl.h>
14045  #include <linux/slab.h>
14046  #include <linux/compat.h>
14047 +#include <linux/vs_base.h>
14048 +#include <linux/vs_cvirt.h>
14049 +#include <linux/vs_pid.h>
14050 +#include <linux/vserver/sched.h>
14051
14052  #include <asm/uaccess.h>
14053  #include <asm/unistd.h>
14054 diff -NurpP --minimal linux-4.9.76/kernel/user_namespace.c linux-4.9.76-vs2.3.9.5/kernel/user_namespace.c
14055 --- linux-4.9.76/kernel/user_namespace.c        2016-12-11 19:17:54.000000000 +0000
14056 +++ linux-4.9.76-vs2.3.9.5/kernel/user_namespace.c      2018-01-10 02:50:49.000000000 +0000
14057 @@ -22,6 +22,7 @@
14058  #include <linux/ctype.h>
14059  #include <linux/projid.h>
14060  #include <linux/fs_struct.h>
14061 +#include <linux/vserver/global.h>
14062
14063  static struct kmem_cache *user_ns_cachep __read_mostly;
14064  static DEFINE_MUTEX(userns_state_mutex);
14065 @@ -115,6 +116,7 @@ int create_user_ns(struct cred *new)
14066
14067         atomic_set(&ns->count, 1);
14068         /* Leave the new->user_ns reference with the new user namespace. */
14069 +       atomic_inc(&vs_global_user_ns);
14070         ns->parent = parent_ns;
14071         ns->level = parent_ns->level + 1;
14072         ns->owner = owner;
14073 @@ -185,6 +187,7 @@ static void free_user_ns(struct work_str
14074                 key_put(ns->persistent_keyring_register);
14075  #endif
14076                 ns_free_inum(&ns->ns);
14077 +               atomic_dec(&vs_global_user_ns);
14078                 kmem_cache_free(user_ns_cachep, ns);
14079                 dec_user_namespaces(ucounts);
14080                 ns = parent;
14081 @@ -404,6 +407,18 @@ gid_t from_kgid_munged(struct user_names
14082  }
14083  EXPORT_SYMBOL(from_kgid_munged);
14084
14085 +ktag_t make_ktag(struct user_namespace *from, vtag_t tag)
14086 +{
14087 +       return KTAGT_INIT(tag);
14088 +}
14089 +EXPORT_SYMBOL(make_ktag);
14090 +
14091 +vtag_t from_ktag(struct user_namespace *to, ktag_t tag)
14092 +{
14093 +       return __ktag_val(tag);
14094 +}
14095 +EXPORT_SYMBOL(from_ktag);
14096 +
14097  /**
14098   *     make_kprojid - Map a user-namespace projid pair into a kprojid.
14099   *     @ns:  User namespace that the projid is in
14100 diff -NurpP --minimal linux-4.9.76/kernel/utsname.c linux-4.9.76-vs2.3.9.5/kernel/utsname.c
14101 --- linux-4.9.76/kernel/utsname.c       2016-12-11 19:17:54.000000000 +0000
14102 +++ linux-4.9.76-vs2.3.9.5/kernel/utsname.c     2018-01-10 09:05:33.000000000 +0000
14103 @@ -16,6 +16,7 @@
14104  #include <linux/slab.h>
14105  #include <linux/user_namespace.h>
14106  #include <linux/proc_ns.h>
14107 +#include <linux/vserver/global.h>
14108
14109  static struct ucounts *inc_uts_namespaces(struct user_namespace *ns)
14110  {
14111 @@ -32,8 +33,10 @@ static struct uts_namespace *create_uts_
14112         struct uts_namespace *uts_ns;
14113
14114         uts_ns = kmalloc(sizeof(struct uts_namespace), GFP_KERNEL);
14115 -       if (uts_ns)
14116 +       if (uts_ns) {
14117                 kref_init(&uts_ns->kref);
14118 +               atomic_inc(&vs_global_uts_ns);
14119 +       }
14120         return uts_ns;
14121  }
14122
14123 @@ -111,6 +114,7 @@ void free_uts_ns(struct kref *kref)
14124         dec_uts_namespaces(ns->ucounts);
14125         put_user_ns(ns->user_ns);
14126         ns_free_inum(&ns->ns);
14127 +       atomic_dec(&vs_global_uts_ns);
14128         kfree(ns);
14129  }
14130
14131 diff -NurpP --minimal linux-4.9.76/kernel/vserver/Kconfig linux-4.9.76-vs2.3.9.5/kernel/vserver/Kconfig
14132 --- linux-4.9.76/kernel/vserver/Kconfig 1970-01-01 00:00:00.000000000 +0000
14133 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/Kconfig       2018-01-10 02:50:49.000000000 +0000
14134 @@ -0,0 +1,230 @@
14135 +#
14136 +# Linux VServer configuration
14137 +#
14138 +
14139 +menu "Linux VServer"
14140 +
14141 +config VSERVER_AUTO_LBACK
14142 +       bool    "Automatically Assign Loopback IP"
14143 +       default y
14144 +       help
14145 +         Automatically assign a guest specific loopback
14146 +         IP and add it to the kernel network stack on
14147 +         startup.
14148 +
14149 +config VSERVER_AUTO_SINGLE
14150 +       bool    "Automatic Single IP Special Casing"
14151 +       default n
14152 +       help
14153 +         This allows network contexts with a single IP to
14154 +         automatically remap 0.0.0.0 bindings to that IP,
14155 +         avoiding further network checks and improving
14156 +         performance.
14157 +
14158 +         (note: such guests do not allow to change the ip
14159 +          on the fly and do not show loopback addresses)
14160 +
14161 +config VSERVER_COWBL
14162 +       bool    "Enable COW Immutable Link Breaking"
14163 +       default y
14164 +       help
14165 +         This enables the COW (Copy-On-Write) link break code.
14166 +         It allows you to treat unified files like normal files
14167 +         when writing to them (which will implicitely break the
14168 +         link and create a copy of the unified file)
14169 +
14170 +config VSERVER_VTIME
14171 +       bool    "Enable Virtualized Guest Time (EXPERIMENTAL)"
14172 +       default n
14173 +       help
14174 +         This enables per guest time offsets to allow for
14175 +         adjusting the system clock individually per guest.
14176 +         this adds some overhead to the time functions and
14177 +         therefore should not be enabled without good reason.
14178 +
14179 +config VSERVER_DEVICE
14180 +       bool    "Enable Guest Device Mapping (EXPERIMENTAL)"
14181 +       default n
14182 +       help
14183 +         This enables generic device remapping.
14184 +
14185 +config VSERVER_PROC_SECURE
14186 +       bool    "Enable Proc Security"
14187 +       depends on PROC_FS
14188 +       default y
14189 +       help
14190 +         This configures ProcFS security to initially hide
14191 +         non-process entries for all contexts except the main and
14192 +         spectator context (i.e. for all guests), which is a secure
14193 +         default.
14194 +
14195 +         (note: on 1.2x the entries were visible by default)
14196 +
14197 +choice
14198 +       prompt  "Persistent Inode Tagging"
14199 +       default TAGGING_ID24
14200 +       help
14201 +         This adds persistent context information to filesystems
14202 +         mounted with the tagxid option. Tagging is a requirement
14203 +         for per-context disk limits and per-context quota.
14204 +
14205 +
14206 +config TAGGING_NONE
14207 +       bool    "Disabled"
14208 +       help
14209 +         do not store per-context information in inodes.
14210 +
14211 +config TAGGING_UID16
14212 +       bool    "UID16/GID32"
14213 +       help
14214 +         reduces UID to 16 bit, but leaves GID at 32 bit.
14215 +
14216 +config TAGGING_GID16
14217 +       bool    "UID32/GID16"
14218 +       help
14219 +         reduces GID to 16 bit, but leaves UID at 32 bit.
14220 +
14221 +config TAGGING_ID24
14222 +       bool    "UID24/GID24"
14223 +       help
14224 +         uses the upper 8bit from UID and GID for XID tagging
14225 +         which leaves 24bit for UID/GID each, which should be
14226 +         more than sufficient for normal use.
14227 +
14228 +config TAGGING_INTERN
14229 +       bool    "UID32/GID32"
14230 +       help
14231 +         this uses otherwise reserved inode fields in the on
14232 +         disk representation, which limits the use to a few
14233 +         filesystems (currently ext2 and ext3)
14234 +
14235 +endchoice
14236 +
14237 +config TAG_NFSD
14238 +       bool    "Tag NFSD User Auth and Files"
14239 +       default n
14240 +       help
14241 +         Enable this if you do want the in-kernel NFS
14242 +         Server to use the tagging specified above.
14243 +         (will require patched clients too)
14244 +
14245 +config VSERVER_PRIVACY
14246 +       bool    "Honor Privacy Aspects of Guests"
14247 +       default n
14248 +       help
14249 +         When enabled, most context checks will disallow
14250 +         access to structures assigned to a specific context,
14251 +         like ptys or loop devices.
14252 +
14253 +config VSERVER_CONTEXTS
14254 +       int     "Maximum number of Contexts (1-65533)"  if EMBEDDED
14255 +       range 1 65533
14256 +       default "768"   if 64BIT
14257 +       default "256"
14258 +       help
14259 +         This setting will optimize certain data structures
14260 +         and memory allocations according to the expected
14261 +         maximum.
14262 +
14263 +         note: this is not a strict upper limit.
14264 +
14265 +config VSERVER_WARN
14266 +       bool    "VServer Warnings"
14267 +       default y
14268 +       help
14269 +         This enables various runtime warnings, which will
14270 +         notify about potential manipulation attempts or
14271 +         resource shortage. It is generally considered to
14272 +         be a good idea to have that enabled.
14273 +
14274 +config VSERVER_WARN_DEVPTS
14275 +       bool    "VServer DevPTS Warnings"
14276 +       depends on VSERVER_WARN
14277 +       default y
14278 +       help
14279 +         This enables DevPTS related warnings, issued when a
14280 +         process inside a context tries to lookup or access
14281 +         a dynamic pts from the host or a different context.
14282 +
14283 +config VSERVER_DEBUG
14284 +       bool    "VServer Debugging Code"
14285 +       default n
14286 +       help
14287 +         Set this to yes if you want to be able to activate
14288 +         debugging output at runtime. It adds a very small
14289 +         overhead to all vserver related functions and
14290 +         increases the kernel size by about 20k.
14291 +
14292 +config VSERVER_HISTORY
14293 +       bool    "VServer History Tracing"
14294 +       depends on VSERVER_DEBUG
14295 +       default n
14296 +       help
14297 +         Set this to yes if you want to record the history of
14298 +         linux-vserver activities, so they can be replayed in
14299 +         the event of a kernel panic or oops.
14300 +
14301 +config VSERVER_HISTORY_SIZE
14302 +       int     "Per-CPU History Size (32-65536)"
14303 +       depends on VSERVER_HISTORY
14304 +       range 32 65536
14305 +       default 64
14306 +       help
14307 +         This allows you to specify the number of entries in
14308 +         the per-CPU history buffer.
14309 +
14310 +config VSERVER_EXTRA_MNT_CHECK
14311 +       bool    "Extra Checks for Reachability"
14312 +       default n
14313 +       help
14314 +         Set this to yes if you want to do extra checks for
14315 +         vfsmount reachability in the proc filesystem code.
14316 +         This shouldn't be required on any setup utilizing
14317 +         mnt namespaces.
14318 +
14319 +choice
14320 +       prompt  "Quotes used in debug and warn messages"
14321 +       default QUOTES_ISO8859
14322 +
14323 +config QUOTES_ISO8859
14324 +       bool    "Extended ASCII (ISO 8859) angle quotes"
14325 +       help
14326 +         This uses the extended ASCII characters \xbb
14327 +         and \xab for quoting file and process names.
14328 +
14329 +config QUOTES_UTF8
14330 +       bool    "UTF-8 angle quotes"
14331 +       help
14332 +         This uses the the UTF-8 sequences for angle
14333 +         quotes to quote file and process names.
14334 +
14335 +config QUOTES_ASCII
14336 +       bool    "ASCII single quotes"
14337 +       help
14338 +         This uses the ASCII single quote character
14339 +         (\x27) to quote file and process names.
14340 +
14341 +endchoice
14342 +
14343 +endmenu
14344 +
14345 +
14346 +config VSERVER
14347 +       bool
14348 +       default y
14349 +       select NAMESPACES
14350 +       select UTS_NS
14351 +       select IPC_NS
14352 +#      select USER_NS
14353 +       select SYSVIPC
14354 +
14355 +config VSERVER_SECURITY
14356 +       bool
14357 +       depends on SECURITY
14358 +       default y
14359 +       select SECURITY_CAPABILITIES
14360 +
14361 +config VSERVER_DISABLED
14362 +       bool
14363 +       default n
14364 +
14365 diff -NurpP --minimal linux-4.9.76/kernel/vserver/Makefile linux-4.9.76-vs2.3.9.5/kernel/vserver/Makefile
14366 --- linux-4.9.76/kernel/vserver/Makefile        1970-01-01 00:00:00.000000000 +0000
14367 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/Makefile      2018-01-10 02:50:49.000000000 +0000
14368 @@ -0,0 +1,18 @@
14369 +#
14370 +# Makefile for the Linux vserver routines.
14371 +#
14372 +
14373 +
14374 +obj-y          += vserver.o
14375 +
14376 +vserver-y      := switch.o context.o space.o sched.o network.o inode.o \
14377 +                  limit.o cvirt.o cacct.o signal.o helper.o init.o \
14378 +                  dlimit.o tag.o
14379 +
14380 +vserver-$(CONFIG_INET) += inet.o
14381 +vserver-$(CONFIG_PROC_FS) += proc.o
14382 +vserver-$(CONFIG_VSERVER_DEBUG) += sysctl.o debug.o
14383 +vserver-$(CONFIG_VSERVER_HISTORY) += history.o
14384 +vserver-$(CONFIG_VSERVER_MONITOR) += monitor.o
14385 +vserver-$(CONFIG_VSERVER_DEVICE) += device.o
14386 +
14387 diff -NurpP --minimal linux-4.9.76/kernel/vserver/cacct.c linux-4.9.76-vs2.3.9.5/kernel/vserver/cacct.c
14388 --- linux-4.9.76/kernel/vserver/cacct.c 1970-01-01 00:00:00.000000000 +0000
14389 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/cacct.c       2018-01-10 02:50:49.000000000 +0000
14390 @@ -0,0 +1,42 @@
14391 +/*
14392 + *  linux/kernel/vserver/cacct.c
14393 + *
14394 + *  Virtual Server: Context Accounting
14395 + *
14396 + *  Copyright (C) 2006-2007 Herbert P?tzl
14397 + *
14398 + *  V0.01  added accounting stats
14399 + *
14400 + */
14401 +
14402 +#include <linux/types.h>
14403 +#include <linux/vs_context.h>
14404 +#include <linux/vserver/cacct_cmd.h>
14405 +#include <linux/vserver/cacct_int.h>
14406 +
14407 +#include <asm/errno.h>
14408 +#include <asm/uaccess.h>
14409 +
14410 +
14411 +int vc_sock_stat(struct vx_info *vxi, void __user *data)
14412 +{
14413 +       struct vcmd_sock_stat_v0 vc_data;
14414 +       int j, field;
14415 +
14416 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
14417 +               return -EFAULT;
14418 +
14419 +       field = vc_data.field;
14420 +       if ((field < 0) || (field >= VXA_SOCK_SIZE))
14421 +               return -EINVAL;
14422 +
14423 +       for (j = 0; j < 3; j++) {
14424 +               vc_data.count[j] = vx_sock_count(&vxi->cacct, field, j);
14425 +               vc_data.total[j] = vx_sock_total(&vxi->cacct, field, j);
14426 +       }
14427 +
14428 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
14429 +               return -EFAULT;
14430 +       return 0;
14431 +}
14432 +
14433 diff -NurpP --minimal linux-4.9.76/kernel/vserver/cacct_init.h linux-4.9.76-vs2.3.9.5/kernel/vserver/cacct_init.h
14434 --- linux-4.9.76/kernel/vserver/cacct_init.h    1970-01-01 00:00:00.000000000 +0000
14435 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/cacct_init.h  2018-01-10 02:50:49.000000000 +0000
14436 @@ -0,0 +1,25 @@
14437 +
14438 +
14439 +static inline void vx_info_init_cacct(struct _vx_cacct *cacct)
14440 +{
14441 +       int i, j;
14442 +
14443 +
14444 +       for (i = 0; i < VXA_SOCK_SIZE; i++) {
14445 +               for (j = 0; j < 3; j++) {
14446 +                       atomic_long_set(&cacct->sock[i][j].count, 0);
14447 +                       atomic_long_set(&cacct->sock[i][j].total, 0);
14448 +               }
14449 +       }
14450 +       for (i = 0; i < 8; i++)
14451 +               atomic_set(&cacct->slab[i], 0);
14452 +       for (i = 0; i < 5; i++)
14453 +               for (j = 0; j < 4; j++)
14454 +                       atomic_set(&cacct->page[i][j], 0);
14455 +}
14456 +
14457 +static inline void vx_info_exit_cacct(struct _vx_cacct *cacct)
14458 +{
14459 +       return;
14460 +}
14461 +
14462 diff -NurpP --minimal linux-4.9.76/kernel/vserver/cacct_proc.h linux-4.9.76-vs2.3.9.5/kernel/vserver/cacct_proc.h
14463 --- linux-4.9.76/kernel/vserver/cacct_proc.h    1970-01-01 00:00:00.000000000 +0000
14464 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/cacct_proc.h  2018-01-10 02:50:49.000000000 +0000
14465 @@ -0,0 +1,53 @@
14466 +#ifndef _VX_CACCT_PROC_H
14467 +#define _VX_CACCT_PROC_H
14468 +
14469 +#include <linux/vserver/cacct_int.h>
14470 +
14471 +
14472 +#define VX_SOCKA_TOP   \
14473 +       "Type\t    recv #/bytes\t\t   send #/bytes\t\t    fail #/bytes\n"
14474 +
14475 +static inline int vx_info_proc_cacct(struct _vx_cacct *cacct, char *buffer)
14476 +{
14477 +       int i, j, length = 0;
14478 +       static char *type[VXA_SOCK_SIZE] = {
14479 +               "UNSPEC", "UNIX", "INET", "INET6", "PACKET", "OTHER"
14480 +       };
14481 +
14482 +       length += sprintf(buffer + length, VX_SOCKA_TOP);
14483 +       for (i = 0; i < VXA_SOCK_SIZE; i++) {
14484 +               length += sprintf(buffer + length, "%s:", type[i]);
14485 +               for (j = 0; j < 3; j++) {
14486 +                       length += sprintf(buffer + length,
14487 +                               "\t%10lu/%-10lu",
14488 +                               vx_sock_count(cacct, i, j),
14489 +                               vx_sock_total(cacct, i, j));
14490 +               }
14491 +               buffer[length++] = '\n';
14492 +       }
14493 +
14494 +       length += sprintf(buffer + length, "\n");
14495 +       length += sprintf(buffer + length,
14496 +               "slab:\t %8u %8u %8u %8u\n",
14497 +               atomic_read(&cacct->slab[1]),
14498 +               atomic_read(&cacct->slab[4]),
14499 +               atomic_read(&cacct->slab[0]),
14500 +               atomic_read(&cacct->slab[2]));
14501 +
14502 +       length += sprintf(buffer + length, "\n");
14503 +       for (i = 0; i < 5; i++) {
14504 +               length += sprintf(buffer + length,
14505 +                       "page[%d]: %8u %8u %8u %8u\t %8u %8u %8u %8u\n", i,
14506 +                       atomic_read(&cacct->page[i][0]),
14507 +                       atomic_read(&cacct->page[i][1]),
14508 +                       atomic_read(&cacct->page[i][2]),
14509 +                       atomic_read(&cacct->page[i][3]),
14510 +                       atomic_read(&cacct->page[i][4]),
14511 +                       atomic_read(&cacct->page[i][5]),
14512 +                       atomic_read(&cacct->page[i][6]),
14513 +                       atomic_read(&cacct->page[i][7]));
14514 +       }
14515 +       return length;
14516 +}
14517 +
14518 +#endif /* _VX_CACCT_PROC_H */
14519 diff -NurpP --minimal linux-4.9.76/kernel/vserver/context.c linux-4.9.76-vs2.3.9.5/kernel/vserver/context.c
14520 --- linux-4.9.76/kernel/vserver/context.c       1970-01-01 00:00:00.000000000 +0000
14521 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/context.c     2018-01-10 02:50:49.000000000 +0000
14522 @@ -0,0 +1,1119 @@
14523 +/*
14524 + *  linux/kernel/vserver/context.c
14525 + *
14526 + *  Virtual Server: Context Support
14527 + *
14528 + *  Copyright (C) 2003-2011  Herbert P?tzl
14529 + *
14530 + *  V0.01  context helper
14531 + *  V0.02  vx_ctx_kill syscall command
14532 + *  V0.03  replaced context_info calls
14533 + *  V0.04  redesign of struct (de)alloc
14534 + *  V0.05  rlimit basic implementation
14535 + *  V0.06  task_xid and info commands
14536 + *  V0.07  context flags and caps
14537 + *  V0.08  switch to RCU based hash
14538 + *  V0.09  revert to non RCU for now
14539 + *  V0.10  and back to working RCU hash
14540 + *  V0.11  and back to locking again
14541 + *  V0.12  referenced context store
14542 + *  V0.13  separate per cpu data
14543 + *  V0.14  changed vcmds to vxi arg
14544 + *  V0.15  added context stat
14545 + *  V0.16  have __create claim() the vxi
14546 + *  V0.17  removed older and legacy stuff
14547 + *  V0.18  added user credentials
14548 + *  V0.19  added warn mask
14549 + *
14550 + */
14551 +
14552 +#include <linux/slab.h>
14553 +#include <linux/types.h>
14554 +#include <linux/security.h>
14555 +#include <linux/pid_namespace.h>
14556 +#include <linux/capability.h>
14557 +
14558 +#include <linux/vserver/context.h>
14559 +#include <linux/vserver/network.h>
14560 +#include <linux/vserver/debug.h>
14561 +#include <linux/vserver/limit.h>
14562 +#include <linux/vserver/limit_int.h>
14563 +#include <linux/vserver/space.h>
14564 +#include <linux/init_task.h>
14565 +#include <linux/fs_struct.h>
14566 +#include <linux/cred.h>
14567 +
14568 +#include <linux/vs_context.h>
14569 +#include <linux/vs_limit.h>
14570 +#include <linux/vs_pid.h>
14571 +#include <linux/vserver/context_cmd.h>
14572 +
14573 +#include "cvirt_init.h"
14574 +#include "cacct_init.h"
14575 +#include "limit_init.h"
14576 +#include "sched_init.h"
14577 +
14578 +
14579 +atomic_t vx_global_ctotal      = ATOMIC_INIT(0);
14580 +atomic_t vx_global_cactive     = ATOMIC_INIT(0);
14581 +
14582 +
14583 +/*     now inactive context structures */
14584 +
14585 +static struct hlist_head vx_info_inactive = HLIST_HEAD_INIT;
14586 +
14587 +static DEFINE_SPINLOCK(vx_info_inactive_lock);
14588 +
14589 +
14590 +/*     __alloc_vx_info()
14591 +
14592 +       * allocate an initialized vx_info struct
14593 +       * doesn't make it visible (hash)                        */
14594 +
14595 +static struct vx_info *__alloc_vx_info(vxid_t xid)
14596 +{
14597 +       struct vx_info *new = NULL;
14598 +       int cpu, index;
14599 +
14600 +       vxdprintk(VXD_CBIT(xid, 0), "alloc_vx_info(%d)*", xid);
14601 +
14602 +       /* would this benefit from a slab cache? */
14603 +       new = kmalloc(sizeof(struct vx_info), GFP_KERNEL);
14604 +       if (!new)
14605 +               return 0;
14606 +
14607 +       memset(new, 0, sizeof(struct vx_info));
14608 +#ifdef CONFIG_SMP
14609 +       new->ptr_pc = alloc_percpu(struct _vx_info_pc);
14610 +       if (!new->ptr_pc)
14611 +               goto error;
14612 +#endif
14613 +       new->vx_id = xid;
14614 +       INIT_HLIST_NODE(&new->vx_hlist);
14615 +       atomic_set(&new->vx_usecnt, 0);
14616 +       atomic_set(&new->vx_tasks, 0);
14617 +       new->vx_parent = NULL;
14618 +       new->vx_state = 0;
14619 +       init_waitqueue_head(&new->vx_wait);
14620 +
14621 +       /* prepare reaper */
14622 +       get_task_struct(init_pid_ns.child_reaper);
14623 +       new->vx_reaper = init_pid_ns.child_reaper;
14624 +       new->vx_badness_bias = 0;
14625 +
14626 +       /* rest of init goes here */
14627 +       vx_info_init_limit(&new->limit);
14628 +       vx_info_init_sched(&new->sched);
14629 +       vx_info_init_cvirt(&new->cvirt);
14630 +       vx_info_init_cacct(&new->cacct);
14631 +
14632 +       /* per cpu data structures */
14633 +       for_each_possible_cpu(cpu) {
14634 +               vx_info_init_sched_pc(
14635 +                       &vx_per_cpu(new, sched_pc, cpu), cpu);
14636 +               vx_info_init_cvirt_pc(
14637 +                       &vx_per_cpu(new, cvirt_pc, cpu), cpu);
14638 +       }
14639 +
14640 +       new->vx_flags = VXF_INIT_SET;
14641 +       new->vx_bcaps = CAP_FULL_SET;   // maybe ~CAP_SETPCAP
14642 +       new->vx_ccaps = 0;
14643 +       new->vx_umask = 0;
14644 +       new->vx_wmask = 0;
14645 +
14646 +       new->reboot_cmd = 0;
14647 +       new->exit_code = 0;
14648 +
14649 +       // preconfig spaces
14650 +       for (index = 0; index < VX_SPACES; index++) {
14651 +               struct _vx_space *space = &new->space[index];
14652 +
14653 +               // filesystem
14654 +               spin_lock(&init_fs.lock);
14655 +               init_fs.users++;
14656 +               spin_unlock(&init_fs.lock);
14657 +               space->vx_fs = &init_fs;
14658 +
14659 +               /* FIXME: do we want defaults? */
14660 +               // space->vx_real_cred = 0;
14661 +               // space->vx_cred = 0;
14662 +       }
14663 +
14664 +
14665 +       vxdprintk(VXD_CBIT(xid, 0),
14666 +               "alloc_vx_info(%d) = %p", xid, new);
14667 +       vxh_alloc_vx_info(new);
14668 +       atomic_inc(&vx_global_ctotal);
14669 +       return new;
14670 +#ifdef CONFIG_SMP
14671 +error:
14672 +       kfree(new);
14673 +       return 0;
14674 +#endif
14675 +}
14676 +
14677 +/*     __dealloc_vx_info()
14678 +
14679 +       * final disposal of vx_info                             */
14680 +
14681 +static void __dealloc_vx_info(struct vx_info *vxi)
14682 +{
14683 +#ifdef CONFIG_VSERVER_WARN
14684 +       struct vx_info_save vxis;
14685 +       int cpu;
14686 +#endif
14687 +       vxdprintk(VXD_CBIT(xid, 0),
14688 +               "dealloc_vx_info(%p)", vxi);
14689 +       vxh_dealloc_vx_info(vxi);
14690 +
14691 +#ifdef CONFIG_VSERVER_WARN
14692 +       enter_vx_info(vxi, &vxis);
14693 +       vx_info_exit_limit(&vxi->limit);
14694 +       vx_info_exit_sched(&vxi->sched);
14695 +       vx_info_exit_cvirt(&vxi->cvirt);
14696 +       vx_info_exit_cacct(&vxi->cacct);
14697 +
14698 +       for_each_possible_cpu(cpu) {
14699 +               vx_info_exit_sched_pc(
14700 +                       &vx_per_cpu(vxi, sched_pc, cpu), cpu);
14701 +               vx_info_exit_cvirt_pc(
14702 +                       &vx_per_cpu(vxi, cvirt_pc, cpu), cpu);
14703 +       }
14704 +       leave_vx_info(&vxis);
14705 +#endif
14706 +
14707 +       vxi->vx_id = -1;
14708 +       vxi->vx_state |= VXS_RELEASED;
14709 +
14710 +#ifdef CONFIG_SMP
14711 +       free_percpu(vxi->ptr_pc);
14712 +#endif
14713 +       kfree(vxi);
14714 +       atomic_dec(&vx_global_ctotal);
14715 +}
14716 +
14717 +static void __shutdown_vx_info(struct vx_info *vxi)
14718 +{
14719 +       struct nsproxy *nsproxy;
14720 +       struct fs_struct *fs;
14721 +       struct cred *cred;
14722 +       int index, kill;
14723 +
14724 +       might_sleep();
14725 +
14726 +       vxi->vx_state |= VXS_SHUTDOWN;
14727 +       vs_state_change(vxi, VSC_SHUTDOWN);
14728 +
14729 +       for (index = 0; index < VX_SPACES; index++) {
14730 +               struct _vx_space *space = &vxi->space[index];
14731 +
14732 +               nsproxy = xchg(&space->vx_nsproxy, NULL);
14733 +               if (nsproxy)
14734 +                       put_nsproxy(nsproxy);
14735 +
14736 +               fs = xchg(&space->vx_fs, NULL);
14737 +               spin_lock(&fs->lock);
14738 +               kill = !--fs->users;
14739 +               spin_unlock(&fs->lock);
14740 +               if (kill)
14741 +                       free_fs_struct(fs);
14742 +
14743 +               cred = (struct cred *)xchg(&space->vx_cred, NULL);
14744 +               if (cred)
14745 +                       abort_creds(cred);
14746 +       }
14747 +}
14748 +
14749 +/* exported stuff */
14750 +
14751 +void free_vx_info(struct vx_info *vxi)
14752 +{
14753 +       unsigned long flags;
14754 +       unsigned index;
14755 +
14756 +       /* check for reference counts first */
14757 +       BUG_ON(atomic_read(&vxi->vx_usecnt));
14758 +       BUG_ON(atomic_read(&vxi->vx_tasks));
14759 +
14760 +       /* context must not be hashed */
14761 +       BUG_ON(vx_info_state(vxi, VXS_HASHED));
14762 +
14763 +       /* context shutdown is mandatory */
14764 +       BUG_ON(!vx_info_state(vxi, VXS_SHUTDOWN));
14765 +
14766 +       /* spaces check */
14767 +       for (index = 0; index < VX_SPACES; index++) {
14768 +               struct _vx_space *space = &vxi->space[index];
14769 +
14770 +               BUG_ON(space->vx_nsproxy);
14771 +               BUG_ON(space->vx_fs);
14772 +               // BUG_ON(space->vx_real_cred);
14773 +               // BUG_ON(space->vx_cred);
14774 +       }
14775 +
14776 +       spin_lock_irqsave(&vx_info_inactive_lock, flags);
14777 +       hlist_del(&vxi->vx_hlist);
14778 +       spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
14779 +
14780 +       __dealloc_vx_info(vxi);
14781 +}
14782 +
14783 +
14784 +/*     hash table for vx_info hash */
14785 +
14786 +#define VX_HASH_SIZE   13
14787 +
14788 +static struct hlist_head vx_info_hash[VX_HASH_SIZE] =
14789 +       { [0 ... VX_HASH_SIZE-1] = HLIST_HEAD_INIT };
14790 +
14791 +static DEFINE_SPINLOCK(vx_info_hash_lock);
14792 +
14793 +
14794 +static inline unsigned int __hashval(vxid_t xid)
14795 +{
14796 +       return (xid % VX_HASH_SIZE);
14797 +}
14798 +
14799 +
14800 +
14801 +/*     __hash_vx_info()
14802 +
14803 +       * add the vxi to the global hash table
14804 +       * requires the hash_lock to be held                     */
14805 +
14806 +static inline void __hash_vx_info(struct vx_info *vxi)
14807 +{
14808 +       struct hlist_head *head;
14809 +
14810 +       vxd_assert_lock(&vx_info_hash_lock);
14811 +       vxdprintk(VXD_CBIT(xid, 4),
14812 +               "__hash_vx_info: %p[#%d]", vxi, vxi->vx_id);
14813 +       vxh_hash_vx_info(vxi);
14814 +
14815 +       /* context must not be hashed */
14816 +       BUG_ON(vx_info_state(vxi, VXS_HASHED));
14817 +
14818 +       vxi->vx_state |= VXS_HASHED;
14819 +       head = &vx_info_hash[__hashval(vxi->vx_id)];
14820 +       hlist_add_head(&vxi->vx_hlist, head);
14821 +       atomic_inc(&vx_global_cactive);
14822 +}
14823 +
14824 +/*     __unhash_vx_info()
14825 +
14826 +       * remove the vxi from the global hash table
14827 +       * requires the hash_lock to be held                     */
14828 +
14829 +static inline void __unhash_vx_info(struct vx_info *vxi)
14830 +{
14831 +       unsigned long flags;
14832 +
14833 +       vxd_assert_lock(&vx_info_hash_lock);
14834 +       vxdprintk(VXD_CBIT(xid, 4),
14835 +               "__unhash_vx_info: %p[#%d.%d.%d]", vxi, vxi->vx_id,
14836 +               atomic_read(&vxi->vx_usecnt), atomic_read(&vxi->vx_tasks));
14837 +       vxh_unhash_vx_info(vxi);
14838 +
14839 +       /* context must be hashed */
14840 +       BUG_ON(!vx_info_state(vxi, VXS_HASHED));
14841 +       /* but without tasks */
14842 +       BUG_ON(atomic_read(&vxi->vx_tasks));
14843 +
14844 +       vxi->vx_state &= ~VXS_HASHED;
14845 +       hlist_del_init(&vxi->vx_hlist);
14846 +       spin_lock_irqsave(&vx_info_inactive_lock, flags);
14847 +       hlist_add_head(&vxi->vx_hlist, &vx_info_inactive);
14848 +       spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
14849 +       atomic_dec(&vx_global_cactive);
14850 +}
14851 +
14852 +
14853 +/*     __lookup_vx_info()
14854 +
14855 +       * requires the hash_lock to be held
14856 +       * doesn't increment the vx_refcnt                       */
14857 +
14858 +static inline struct vx_info *__lookup_vx_info(vxid_t xid)
14859 +{
14860 +       struct hlist_head *head = &vx_info_hash[__hashval(xid)];
14861 +       struct hlist_node *pos;
14862 +       struct vx_info *vxi;
14863 +
14864 +       vxd_assert_lock(&vx_info_hash_lock);
14865 +       hlist_for_each(pos, head) {
14866 +               vxi = hlist_entry(pos, struct vx_info, vx_hlist);
14867 +
14868 +               if (vxi->vx_id == xid)
14869 +                       goto found;
14870 +       }
14871 +       vxi = NULL;
14872 +found:
14873 +       vxdprintk(VXD_CBIT(xid, 0),
14874 +               "__lookup_vx_info(#%u): %p[#%u]",
14875 +               xid, vxi, vxi ? vxi->vx_id : 0);
14876 +       vxh_lookup_vx_info(vxi, xid);
14877 +       return vxi;
14878 +}
14879 +
14880 +
14881 +/*     __create_vx_info()
14882 +
14883 +       * create the requested context
14884 +       * get(), claim() and hash it                            */
14885 +
14886 +static struct vx_info *__create_vx_info(int id)
14887 +{
14888 +       struct vx_info *new, *vxi = NULL;
14889 +
14890 +       vxdprintk(VXD_CBIT(xid, 1), "create_vx_info(%d)*", id);
14891 +
14892 +       if (!(new = __alloc_vx_info(id)))
14893 +               return ERR_PTR(-ENOMEM);
14894 +
14895 +       /* required to make dynamic xids unique */
14896 +       spin_lock(&vx_info_hash_lock);
14897 +
14898 +       /* static context requested */
14899 +       if ((vxi = __lookup_vx_info(id))) {
14900 +               vxdprintk(VXD_CBIT(xid, 0),
14901 +                       "create_vx_info(%d) = %p (already there)", id, vxi);
14902 +               if (vx_info_flags(vxi, VXF_STATE_SETUP, 0))
14903 +                       vxi = ERR_PTR(-EBUSY);
14904 +               else
14905 +                       vxi = ERR_PTR(-EEXIST);
14906 +               goto out_unlock;
14907 +       }
14908 +       /* new context */
14909 +       vxdprintk(VXD_CBIT(xid, 0),
14910 +               "create_vx_info(%d) = %p (new)", id, new);
14911 +       claim_vx_info(new, NULL);
14912 +       __hash_vx_info(get_vx_info(new));
14913 +       vxi = new, new = NULL;
14914 +
14915 +out_unlock:
14916 +       spin_unlock(&vx_info_hash_lock);
14917 +       vxh_create_vx_info(IS_ERR(vxi) ? NULL : vxi, id);
14918 +       if (new)
14919 +               __dealloc_vx_info(new);
14920 +       return vxi;
14921 +}
14922 +
14923 +
14924 +/*     exported stuff                                          */
14925 +
14926 +
14927 +void unhash_vx_info(struct vx_info *vxi)
14928 +{
14929 +       spin_lock(&vx_info_hash_lock);
14930 +       __unhash_vx_info(vxi);
14931 +       spin_unlock(&vx_info_hash_lock);
14932 +       __shutdown_vx_info(vxi);
14933 +       __wakeup_vx_info(vxi);
14934 +}
14935 +
14936 +
14937 +/*     lookup_vx_info()
14938 +
14939 +       * search for a vx_info and get() it
14940 +       * negative id means current                             */
14941 +
14942 +struct vx_info *lookup_vx_info(int id)
14943 +{
14944 +       struct vx_info *vxi = NULL;
14945 +
14946 +       if (id < 0) {
14947 +               vxi = get_vx_info(current_vx_info());
14948 +       } else if (id > 1) {
14949 +               spin_lock(&vx_info_hash_lock);
14950 +               vxi = get_vx_info(__lookup_vx_info(id));
14951 +               spin_unlock(&vx_info_hash_lock);
14952 +       }
14953 +       return vxi;
14954 +}
14955 +
14956 +/*     xid_is_hashed()
14957 +
14958 +       * verify that xid is still hashed                       */
14959 +
14960 +int xid_is_hashed(vxid_t xid)
14961 +{
14962 +       int hashed;
14963 +
14964 +       spin_lock(&vx_info_hash_lock);
14965 +       hashed = (__lookup_vx_info(xid) != NULL);
14966 +       spin_unlock(&vx_info_hash_lock);
14967 +       return hashed;
14968 +}
14969 +
14970 +#ifdef CONFIG_PROC_FS
14971 +
14972 +/*     get_xid_list()
14973 +
14974 +       * get a subset of hashed xids for proc
14975 +       * assumes size is at least one                          */
14976 +
14977 +int get_xid_list(int index, unsigned int *xids, int size)
14978 +{
14979 +       int hindex, nr_xids = 0;
14980 +
14981 +       /* only show current and children */
14982 +       if (!vx_check(0, VS_ADMIN | VS_WATCH)) {
14983 +               if (index > 0)
14984 +                       return 0;
14985 +               xids[nr_xids] = vx_current_xid();
14986 +               return 1;
14987 +       }
14988 +
14989 +       for (hindex = 0; hindex < VX_HASH_SIZE; hindex++) {
14990 +               struct hlist_head *head = &vx_info_hash[hindex];
14991 +               struct hlist_node *pos;
14992 +
14993 +               spin_lock(&vx_info_hash_lock);
14994 +               hlist_for_each(pos, head) {
14995 +                       struct vx_info *vxi;
14996 +
14997 +                       if (--index > 0)
14998 +                               continue;
14999 +
15000 +                       vxi = hlist_entry(pos, struct vx_info, vx_hlist);
15001 +                       xids[nr_xids] = vxi->vx_id;
15002 +                       if (++nr_xids >= size) {
15003 +                               spin_unlock(&vx_info_hash_lock);
15004 +                               goto out;
15005 +                       }
15006 +               }
15007 +               /* keep the lock time short */
15008 +               spin_unlock(&vx_info_hash_lock);
15009 +       }
15010 +out:
15011 +       return nr_xids;
15012 +}
15013 +#endif
15014 +
15015 +#ifdef CONFIG_VSERVER_DEBUG
15016 +
15017 +void   dump_vx_info_inactive(int level)
15018 +{
15019 +       struct hlist_node *entry, *next;
15020 +
15021 +       hlist_for_each_safe(entry, next, &vx_info_inactive) {
15022 +               struct vx_info *vxi =
15023 +                       list_entry(entry, struct vx_info, vx_hlist);
15024 +
15025 +               dump_vx_info(vxi, level);
15026 +       }
15027 +}
15028 +
15029 +#endif
15030 +
15031 +#if 0
15032 +int vx_migrate_user(struct task_struct *p, struct vx_info *vxi)
15033 +{
15034 +       struct user_struct *new_user, *old_user;
15035 +
15036 +       if (!p || !vxi)
15037 +               BUG();
15038 +
15039 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0))
15040 +               return -EACCES;
15041 +
15042 +       new_user = alloc_uid(vxi->vx_id, p->uid);
15043 +       if (!new_user)
15044 +               return -ENOMEM;
15045 +
15046 +       old_user = p->user;
15047 +       if (new_user != old_user) {
15048 +               atomic_inc(&new_user->processes);
15049 +               atomic_dec(&old_user->processes);
15050 +               p->user = new_user;
15051 +       }
15052 +       free_uid(old_user);
15053 +       return 0;
15054 +}
15055 +#endif
15056 +
15057 +#if 0
15058 +void vx_mask_cap_bset(struct vx_info *vxi, struct task_struct *p)
15059 +{
15060 +       // p->cap_effective &= vxi->vx_cap_bset;
15061 +       p->cap_effective =
15062 +               cap_intersect(p->cap_effective, vxi->cap_bset);
15063 +       // p->cap_inheritable &= vxi->vx_cap_bset;
15064 +       p->cap_inheritable =
15065 +               cap_intersect(p->cap_inheritable, vxi->cap_bset);
15066 +       // p->cap_permitted &= vxi->vx_cap_bset;
15067 +       p->cap_permitted =
15068 +               cap_intersect(p->cap_permitted, vxi->cap_bset);
15069 +}
15070 +#endif
15071 +
15072 +
15073 +#include <linux/file.h>
15074 +#include <linux/fdtable.h>
15075 +
15076 +static int vx_openfd_task(struct task_struct *tsk)
15077 +{
15078 +       struct files_struct *files = tsk->files;
15079 +       struct fdtable *fdt;
15080 +       const unsigned long *bptr;
15081 +       int count, total;
15082 +
15083 +       /* no rcu_read_lock() because of spin_lock() */
15084 +       spin_lock(&files->file_lock);
15085 +       fdt = files_fdtable(files);
15086 +       bptr = fdt->open_fds;
15087 +       count = fdt->max_fds / (sizeof(unsigned long) * 8);
15088 +       for (total = 0; count > 0; count--) {
15089 +               if (*bptr)
15090 +                       total += hweight_long(*bptr);
15091 +               bptr++;
15092 +       }
15093 +       spin_unlock(&files->file_lock);
15094 +       return total;
15095 +}
15096 +
15097 +
15098 +/*     for *space compatibility */
15099 +
15100 +asmlinkage long sys_unshare(unsigned long);
15101 +
15102 +/*
15103 + *     migrate task to new context
15104 + *     gets vxi, puts old_vxi on change
15105 + *     optionally unshares namespaces (hack)
15106 + */
15107 +
15108 +int vx_migrate_task(struct task_struct *p, struct vx_info *vxi, int unshare)
15109 +{
15110 +       struct vx_info *old_vxi;
15111 +       int ret = 0;
15112 +
15113 +       if (!p || !vxi)
15114 +               BUG();
15115 +
15116 +       vxdprintk(VXD_CBIT(xid, 5),
15117 +               "vx_migrate_task(%p,%p[#%d.%d])", p, vxi,
15118 +               vxi->vx_id, atomic_read(&vxi->vx_usecnt));
15119 +
15120 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0) &&
15121 +               !vx_info_flags(vxi, VXF_STATE_SETUP, 0))
15122 +               return -EACCES;
15123 +
15124 +       if (vx_info_state(vxi, VXS_SHUTDOWN))
15125 +               return -EFAULT;
15126 +
15127 +       old_vxi = task_get_vx_info(p);
15128 +       if (old_vxi == vxi)
15129 +               goto out;
15130 +
15131 +//     if (!(ret = vx_migrate_user(p, vxi))) {
15132 +       {
15133 +               int openfd;
15134 +
15135 +               task_lock(p);
15136 +               openfd = vx_openfd_task(p);
15137 +
15138 +               if (old_vxi) {
15139 +                       atomic_dec(&old_vxi->cvirt.nr_threads);
15140 +                       atomic_dec(&old_vxi->cvirt.nr_running);
15141 +                       __rlim_dec(&old_vxi->limit, RLIMIT_NPROC);
15142 +                       /* FIXME: what about the struct files here? */
15143 +                       __rlim_sub(&old_vxi->limit, VLIMIT_OPENFD, openfd);
15144 +                       /* account for the executable */
15145 +                       __rlim_dec(&old_vxi->limit, VLIMIT_DENTRY);
15146 +               }
15147 +               atomic_inc(&vxi->cvirt.nr_threads);
15148 +               atomic_inc(&vxi->cvirt.nr_running);
15149 +               __rlim_inc(&vxi->limit, RLIMIT_NPROC);
15150 +               /* FIXME: what about the struct files here? */
15151 +               __rlim_add(&vxi->limit, VLIMIT_OPENFD, openfd);
15152 +               /* account for the executable */
15153 +               __rlim_inc(&vxi->limit, VLIMIT_DENTRY);
15154 +
15155 +               if (old_vxi) {
15156 +                       release_vx_info(old_vxi, p);
15157 +                       clr_vx_info(&p->vx_info);
15158 +               }
15159 +               claim_vx_info(vxi, p);
15160 +               set_vx_info(&p->vx_info, vxi);
15161 +               p->xid = vxi->vx_id;
15162 +
15163 +               vxdprintk(VXD_CBIT(xid, 5),
15164 +                       "moved task %p into vxi:%p[#%d]",
15165 +                       p, vxi, vxi->vx_id);
15166 +
15167 +               // vx_mask_cap_bset(vxi, p);
15168 +               task_unlock(p);
15169 +
15170 +               /* hack for *spaces to provide compatibility */
15171 +               if (unshare) {
15172 +                       struct nsproxy *old_nsp, *new_nsp;
15173 +
15174 +                       ret = unshare_nsproxy_namespaces(
15175 +                               CLONE_NEWUTS | CLONE_NEWIPC | CLONE_NEWUSER,
15176 +                               &new_nsp, NULL, NULL);
15177 +                       if (ret)
15178 +                               goto out;
15179 +
15180 +                       old_nsp = xchg(&p->nsproxy, new_nsp);
15181 +                       vx_set_space(vxi,
15182 +                               CLONE_NEWUTS | CLONE_NEWIPC | CLONE_NEWUSER, 0);
15183 +                       put_nsproxy(old_nsp);
15184 +               }
15185 +       }
15186 +out:
15187 +       put_vx_info(old_vxi);
15188 +       return ret;
15189 +}
15190 +
15191 +int vx_set_reaper(struct vx_info *vxi, struct task_struct *p)
15192 +{
15193 +       struct task_struct *old_reaper;
15194 +       struct vx_info *reaper_vxi;
15195 +
15196 +       if (!vxi)
15197 +               return -EINVAL;
15198 +
15199 +       vxdprintk(VXD_CBIT(xid, 6),
15200 +               "vx_set_reaper(%p[#%d],%p[#%d,%d])",
15201 +               vxi, vxi->vx_id, p, p->xid, p->pid);
15202 +
15203 +       old_reaper = vxi->vx_reaper;
15204 +       if (old_reaper == p)
15205 +               return 0;
15206 +
15207 +       reaper_vxi = task_get_vx_info(p);
15208 +       if (reaper_vxi && reaper_vxi != vxi) {
15209 +               vxwprintk(1,
15210 +                       "Unsuitable reaper [" VS_Q("%s") ",%u:#%u] "
15211 +                       "for [xid #%u]",
15212 +                       p->comm, p->pid, p->xid, vx_current_xid());
15213 +               goto out;
15214 +       }
15215 +
15216 +       /* set new child reaper */
15217 +       get_task_struct(p);
15218 +       vxi->vx_reaper = p;
15219 +       put_task_struct(old_reaper);
15220 +out:
15221 +       put_vx_info(reaper_vxi);
15222 +       return 0;
15223 +}
15224 +
15225 +int vx_set_init(struct vx_info *vxi, struct task_struct *p)
15226 +{
15227 +       if (!vxi)
15228 +               return -EINVAL;
15229 +
15230 +       vxdprintk(VXD_CBIT(xid, 6),
15231 +               "vx_set_init(%p[#%d],%p[#%d,%d,%d])",
15232 +               vxi, vxi->vx_id, p, p->xid, p->pid, p->tgid);
15233 +
15234 +       vxi->vx_flags &= ~VXF_STATE_INIT;
15235 +       // vxi->vx_initpid = p->tgid;
15236 +       vxi->vx_initpid = p->pid;
15237 +       return 0;
15238 +}
15239 +
15240 +void vx_exit_init(struct vx_info *vxi, struct task_struct *p, int code)
15241 +{
15242 +       vxdprintk(VXD_CBIT(xid, 6),
15243 +               "vx_exit_init(%p[#%d],%p[#%d,%d,%d])",
15244 +               vxi, vxi->vx_id, p, p->xid, p->pid, p->tgid);
15245 +
15246 +       vxi->exit_code = code;
15247 +       vxi->vx_initpid = 0;
15248 +}
15249 +
15250 +
15251 +void vx_set_persistent(struct vx_info *vxi)
15252 +{
15253 +       vxdprintk(VXD_CBIT(xid, 6),
15254 +               "vx_set_persistent(%p[#%d])", vxi, vxi->vx_id);
15255 +
15256 +       get_vx_info(vxi);
15257 +       claim_vx_info(vxi, NULL);
15258 +}
15259 +
15260 +void vx_clear_persistent(struct vx_info *vxi)
15261 +{
15262 +       vxdprintk(VXD_CBIT(xid, 6),
15263 +               "vx_clear_persistent(%p[#%d])", vxi, vxi->vx_id);
15264 +
15265 +       release_vx_info(vxi, NULL);
15266 +       put_vx_info(vxi);
15267 +}
15268 +
15269 +void vx_update_persistent(struct vx_info *vxi)
15270 +{
15271 +       if (vx_info_flags(vxi, VXF_PERSISTENT, 0))
15272 +               vx_set_persistent(vxi);
15273 +       else
15274 +               vx_clear_persistent(vxi);
15275 +}
15276 +
15277 +
15278 +/*     task must be current or locked          */
15279 +
15280 +void   exit_vx_info(struct task_struct *p, int code)
15281 +{
15282 +       struct vx_info *vxi = p->vx_info;
15283 +
15284 +       if (vxi) {
15285 +               atomic_dec(&vxi->cvirt.nr_threads);
15286 +               vx_nproc_dec(p);
15287 +
15288 +               vxi->exit_code = code;
15289 +               release_vx_info(vxi, p);
15290 +       }
15291 +}
15292 +
15293 +void   exit_vx_info_early(struct task_struct *p, int code)
15294 +{
15295 +       struct vx_info *vxi = p->vx_info;
15296 +
15297 +       if (vxi) {
15298 +               if (vxi->vx_initpid == p->pid)
15299 +                       vx_exit_init(vxi, p, code);
15300 +               if (vxi->vx_reaper == p)
15301 +                       vx_set_reaper(vxi, init_pid_ns.child_reaper);
15302 +       }
15303 +}
15304 +
15305 +
15306 +/* vserver syscall commands below here */
15307 +
15308 +/* taks xid and vx_info functions */
15309 +
15310 +#include <asm/uaccess.h>
15311 +
15312 +
15313 +int vc_task_xid(uint32_t id)
15314 +{
15315 +       vxid_t xid;
15316 +
15317 +       if (id) {
15318 +               struct task_struct *tsk;
15319 +
15320 +               rcu_read_lock();
15321 +               tsk = find_task_by_real_pid(id);
15322 +               xid = (tsk) ? tsk->xid : -ESRCH;
15323 +               rcu_read_unlock();
15324 +       } else
15325 +               xid = vx_current_xid();
15326 +       return xid;
15327 +}
15328 +
15329 +
15330 +int vc_vx_info(struct vx_info *vxi, void __user *data)
15331 +{
15332 +       struct vcmd_vx_info_v0 vc_data;
15333 +
15334 +       vc_data.xid = vxi->vx_id;
15335 +       vc_data.initpid = vxi->vx_initpid;
15336 +
15337 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15338 +               return -EFAULT;
15339 +       return 0;
15340 +}
15341 +
15342 +
15343 +int vc_ctx_stat(struct vx_info *vxi, void __user *data)
15344 +{
15345 +       struct vcmd_ctx_stat_v0 vc_data;
15346 +
15347 +       vc_data.usecnt = atomic_read(&vxi->vx_usecnt);
15348 +       vc_data.tasks = atomic_read(&vxi->vx_tasks);
15349 +
15350 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15351 +               return -EFAULT;
15352 +       return 0;
15353 +}
15354 +
15355 +
15356 +/* context functions */
15357 +
15358 +int vc_ctx_create(uint32_t xid, void __user *data)
15359 +{
15360 +       struct vcmd_ctx_create vc_data = { .flagword = VXF_INIT_SET };
15361 +       struct vx_info *new_vxi;
15362 +       int ret;
15363 +
15364 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
15365 +               return -EFAULT;
15366 +
15367 +       if ((xid > MAX_S_CONTEXT) || (xid < 2))
15368 +               return -EINVAL;
15369 +
15370 +       new_vxi = __create_vx_info(xid);
15371 +       if (IS_ERR(new_vxi))
15372 +               return PTR_ERR(new_vxi);
15373 +
15374 +       /* initial flags */
15375 +       new_vxi->vx_flags = vc_data.flagword;
15376 +
15377 +       ret = -ENOEXEC;
15378 +       if (vs_state_change(new_vxi, VSC_STARTUP))
15379 +               goto out;
15380 +
15381 +       ret = vx_migrate_task(current, new_vxi, (!data));
15382 +       if (ret)
15383 +               goto out;
15384 +
15385 +       /* return context id on success */
15386 +       ret = new_vxi->vx_id;
15387 +
15388 +       /* get a reference for persistent contexts */
15389 +       if ((vc_data.flagword & VXF_PERSISTENT))
15390 +               vx_set_persistent(new_vxi);
15391 +out:
15392 +       release_vx_info(new_vxi, NULL);
15393 +       put_vx_info(new_vxi);
15394 +       return ret;
15395 +}
15396 +
15397 +
15398 +int vc_ctx_migrate(struct vx_info *vxi, void __user *data)
15399 +{
15400 +       struct vcmd_ctx_migrate vc_data = { .flagword = 0 };
15401 +       int ret;
15402 +
15403 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
15404 +               return -EFAULT;
15405 +
15406 +       ret = vx_migrate_task(current, vxi, 0);
15407 +       if (ret)
15408 +               return ret;
15409 +       if (vc_data.flagword & VXM_SET_INIT)
15410 +               ret = vx_set_init(vxi, current);
15411 +       if (ret)
15412 +               return ret;
15413 +       if (vc_data.flagword & VXM_SET_REAPER)
15414 +               ret = vx_set_reaper(vxi, current);
15415 +       return ret;
15416 +}
15417 +
15418 +
15419 +int vc_get_cflags(struct vx_info *vxi, void __user *data)
15420 +{
15421 +       struct vcmd_ctx_flags_v0 vc_data;
15422 +
15423 +       vc_data.flagword = vxi->vx_flags;
15424 +
15425 +       /* special STATE flag handling */
15426 +       vc_data.mask = vs_mask_flags(~0ULL, vxi->vx_flags, VXF_ONE_TIME);
15427 +
15428 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15429 +               return -EFAULT;
15430 +       return 0;
15431 +}
15432 +
15433 +int vc_set_cflags(struct vx_info *vxi, void __user *data)
15434 +{
15435 +       struct vcmd_ctx_flags_v0 vc_data;
15436 +       uint64_t mask, trigger;
15437 +
15438 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15439 +               return -EFAULT;
15440 +
15441 +       /* special STATE flag handling */
15442 +       mask = vs_mask_mask(vc_data.mask, vxi->vx_flags, VXF_ONE_TIME);
15443 +       trigger = (mask & vxi->vx_flags) ^ (mask & vc_data.flagword);
15444 +
15445 +       if (vxi == current_vx_info()) {
15446 +               /* if (trigger & VXF_STATE_SETUP)
15447 +                       vx_mask_cap_bset(vxi, current); */
15448 +               if (trigger & VXF_STATE_INIT) {
15449 +                       int ret;
15450 +
15451 +                       ret = vx_set_init(vxi, current);
15452 +                       if (ret)
15453 +                               return ret;
15454 +                       ret = vx_set_reaper(vxi, current);
15455 +                       if (ret)
15456 +                               return ret;
15457 +               }
15458 +       }
15459 +
15460 +       vxi->vx_flags = vs_mask_flags(vxi->vx_flags,
15461 +               vc_data.flagword, mask);
15462 +       if (trigger & VXF_PERSISTENT)
15463 +               vx_update_persistent(vxi);
15464 +
15465 +       return 0;
15466 +}
15467 +
15468 +
15469 +static inline uint64_t caps_from_cap_t(kernel_cap_t c)
15470 +{
15471 +       uint64_t v = c.cap[0] | ((uint64_t)c.cap[1] << 32);
15472 +
15473 +       // printk("caps_from_cap_t(%08x:%08x) = %016llx\n", c.cap[1], c.cap[0], v);
15474 +       return v;
15475 +}
15476 +
15477 +static inline kernel_cap_t cap_t_from_caps(uint64_t v)
15478 +{
15479 +       kernel_cap_t c = __cap_empty_set;
15480 +
15481 +       c.cap[0] = v & 0xFFFFFFFF;
15482 +       c.cap[1] = (v >> 32) & 0xFFFFFFFF;
15483 +
15484 +       // printk("cap_t_from_caps(%016llx) = %08x:%08x\n", v, c.cap[1], c.cap[0]);
15485 +       return c;
15486 +}
15487 +
15488 +
15489 +static int do_get_caps(struct vx_info *vxi, uint64_t *bcaps, uint64_t *ccaps)
15490 +{
15491 +       if (bcaps)
15492 +               *bcaps = caps_from_cap_t(vxi->vx_bcaps);
15493 +       if (ccaps)
15494 +               *ccaps = vxi->vx_ccaps;
15495 +
15496 +       return 0;
15497 +}
15498 +
15499 +int vc_get_ccaps(struct vx_info *vxi, void __user *data)
15500 +{
15501 +       struct vcmd_ctx_caps_v1 vc_data;
15502 +       int ret;
15503 +
15504 +       ret = do_get_caps(vxi, NULL, &vc_data.ccaps);
15505 +       if (ret)
15506 +               return ret;
15507 +       vc_data.cmask = ~0ULL;
15508 +
15509 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15510 +               return -EFAULT;
15511 +       return 0;
15512 +}
15513 +
15514 +static int do_set_caps(struct vx_info *vxi,
15515 +       uint64_t bcaps, uint64_t bmask, uint64_t ccaps, uint64_t cmask)
15516 +{
15517 +       uint64_t bcold = caps_from_cap_t(vxi->vx_bcaps);
15518 +
15519 +#if 0
15520 +       printk("do_set_caps(%16llx, %16llx, %16llx, %16llx)\n",
15521 +               bcaps, bmask, ccaps, cmask);
15522 +#endif
15523 +       vxi->vx_bcaps = cap_t_from_caps(
15524 +               vs_mask_flags(bcold, bcaps, bmask));
15525 +       vxi->vx_ccaps = vs_mask_flags(vxi->vx_ccaps, ccaps, cmask);
15526 +
15527 +       return 0;
15528 +}
15529 +
15530 +int vc_set_ccaps(struct vx_info *vxi, void __user *data)
15531 +{
15532 +       struct vcmd_ctx_caps_v1 vc_data;
15533 +
15534 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15535 +               return -EFAULT;
15536 +
15537 +       return do_set_caps(vxi, 0, 0, vc_data.ccaps, vc_data.cmask);
15538 +}
15539 +
15540 +int vc_get_bcaps(struct vx_info *vxi, void __user *data)
15541 +{
15542 +       struct vcmd_bcaps vc_data;
15543 +       int ret;
15544 +
15545 +       ret = do_get_caps(vxi, &vc_data.bcaps, NULL);
15546 +       if (ret)
15547 +               return ret;
15548 +       vc_data.bmask = ~0ULL;
15549 +
15550 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15551 +               return -EFAULT;
15552 +       return 0;
15553 +}
15554 +
15555 +int vc_set_bcaps(struct vx_info *vxi, void __user *data)
15556 +{
15557 +       struct vcmd_bcaps vc_data;
15558 +
15559 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15560 +               return -EFAULT;
15561 +
15562 +       return do_set_caps(vxi, vc_data.bcaps, vc_data.bmask, 0, 0);
15563 +}
15564 +
15565 +
15566 +int vc_get_umask(struct vx_info *vxi, void __user *data)
15567 +{
15568 +       struct vcmd_umask vc_data;
15569 +
15570 +       vc_data.umask = vxi->vx_umask;
15571 +       vc_data.mask = ~0ULL;
15572 +
15573 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15574 +               return -EFAULT;
15575 +       return 0;
15576 +}
15577 +
15578 +int vc_set_umask(struct vx_info *vxi, void __user *data)
15579 +{
15580 +       struct vcmd_umask vc_data;
15581 +
15582 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15583 +               return -EFAULT;
15584 +
15585 +       vxi->vx_umask = vs_mask_flags(vxi->vx_umask,
15586 +               vc_data.umask, vc_data.mask);
15587 +       return 0;
15588 +}
15589 +
15590 +
15591 +int vc_get_wmask(struct vx_info *vxi, void __user *data)
15592 +{
15593 +       struct vcmd_wmask vc_data;
15594 +
15595 +       vc_data.wmask = vxi->vx_wmask;
15596 +       vc_data.mask = ~0ULL;
15597 +
15598 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15599 +               return -EFAULT;
15600 +       return 0;
15601 +}
15602 +
15603 +int vc_set_wmask(struct vx_info *vxi, void __user *data)
15604 +{
15605 +       struct vcmd_wmask vc_data;
15606 +
15607 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15608 +               return -EFAULT;
15609 +
15610 +       vxi->vx_wmask = vs_mask_flags(vxi->vx_wmask,
15611 +               vc_data.wmask, vc_data.mask);
15612 +       return 0;
15613 +}
15614 +
15615 +
15616 +int vc_get_badness(struct vx_info *vxi, void __user *data)
15617 +{
15618 +       struct vcmd_badness_v0 vc_data;
15619 +
15620 +       vc_data.bias = vxi->vx_badness_bias;
15621 +
15622 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15623 +               return -EFAULT;
15624 +       return 0;
15625 +}
15626 +
15627 +int vc_set_badness(struct vx_info *vxi, void __user *data)
15628 +{
15629 +       struct vcmd_badness_v0 vc_data;
15630 +
15631 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15632 +               return -EFAULT;
15633 +
15634 +       vxi->vx_badness_bias = vc_data.bias;
15635 +       return 0;
15636 +}
15637 +
15638 +#include <linux/module.h>
15639 +
15640 +EXPORT_SYMBOL_GPL(free_vx_info);
15641 +
15642 diff -NurpP --minimal linux-4.9.76/kernel/vserver/cvirt.c linux-4.9.76-vs2.3.9.5/kernel/vserver/cvirt.c
15643 --- linux-4.9.76/kernel/vserver/cvirt.c 1970-01-01 00:00:00.000000000 +0000
15644 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/cvirt.c       2018-01-11 08:36:23.000000000 +0000
15645 @@ -0,0 +1,350 @@
15646 +/*
15647 + *  linux/kernel/vserver/cvirt.c
15648 + *
15649 + *  Virtual Server: Context Virtualization
15650 + *
15651 + *  Copyright (C) 2004-2007  Herbert P?tzl
15652 + *
15653 + *  V0.01  broken out from limit.c
15654 + *  V0.02  added utsname stuff
15655 + *  V0.03  changed vcmds to vxi arg
15656 + *
15657 + */
15658 +
15659 +#include <linux/types.h>
15660 +#include <linux/utsname.h>
15661 +#include <linux/vs_cvirt.h>
15662 +#include <linux/vserver/switch.h>
15663 +#include <linux/vserver/cvirt_cmd.h>
15664 +
15665 +#include <asm/uaccess.h>
15666 +
15667 +
15668 +void vx_vsi_boottime(struct timespec *boottime)
15669 +{
15670 +       struct vx_info *vxi = current_vx_info();
15671 +
15672 +       set_normalized_timespec(boottime,
15673 +               boottime->tv_sec + vxi->cvirt.bias_uptime.tv_sec,
15674 +               boottime->tv_nsec + vxi->cvirt.bias_uptime.tv_nsec);
15675 +       return;
15676 +}
15677 +
15678 +void vx_vsi_uptime(struct timespec *uptime, struct timespec *idle)
15679 +{
15680 +       struct vx_info *vxi = current_vx_info();
15681 +
15682 +       set_normalized_timespec(uptime,
15683 +               uptime->tv_sec - vxi->cvirt.bias_uptime.tv_sec,
15684 +               uptime->tv_nsec - vxi->cvirt.bias_uptime.tv_nsec);
15685 +       if (!idle)
15686 +               return;
15687 +       set_normalized_timespec(idle,
15688 +               idle->tv_sec - vxi->cvirt.bias_idle.tv_sec,
15689 +               idle->tv_nsec - vxi->cvirt.bias_idle.tv_nsec);
15690 +       return;
15691 +}
15692 +
15693 +uint64_t vx_idle_jiffies(void)
15694 +{
15695 +       return init_task.utime + init_task.stime;
15696 +}
15697 +
15698 +
15699 +
15700 +static inline uint32_t __update_loadavg(uint32_t load,
15701 +       int wsize, int delta, int n)
15702 +{
15703 +       unsigned long long calc, prev;
15704 +
15705 +       /* just set it to n */
15706 +       if (unlikely(delta >= wsize))
15707 +               return (n << FSHIFT);
15708 +
15709 +       calc = delta * n;
15710 +       calc <<= FSHIFT;
15711 +       prev = (wsize - delta);
15712 +       prev *= load;
15713 +       calc += prev;
15714 +       do_div(calc, wsize);
15715 +       return calc;
15716 +}
15717 +
15718 +
15719 +void vx_update_load(struct vx_info *vxi)
15720 +{
15721 +       uint32_t now, last, delta;
15722 +       unsigned int nr_running, nr_uninterruptible;
15723 +       unsigned int total;
15724 +       unsigned long flags;
15725 +
15726 +       spin_lock_irqsave(&vxi->cvirt.load_lock, flags);
15727 +
15728 +       now = jiffies;
15729 +       last = vxi->cvirt.load_last;
15730 +       delta = now - last;
15731 +
15732 +       if (delta < 5*HZ)
15733 +               goto out;
15734 +
15735 +       nr_running = atomic_read(&vxi->cvirt.nr_running);
15736 +       nr_uninterruptible = atomic_read(&vxi->cvirt.nr_uninterruptible);
15737 +       total = nr_running + nr_uninterruptible;
15738 +
15739 +       vxi->cvirt.load[0] = __update_loadavg(vxi->cvirt.load[0],
15740 +               60*HZ, delta, total);
15741 +       vxi->cvirt.load[1] = __update_loadavg(vxi->cvirt.load[1],
15742 +               5*60*HZ, delta, total);
15743 +       vxi->cvirt.load[2] = __update_loadavg(vxi->cvirt.load[2],
15744 +               15*60*HZ, delta, total);
15745 +
15746 +       vxi->cvirt.load_last = now;
15747 +out:
15748 +       atomic_inc(&vxi->cvirt.load_updates);
15749 +       spin_unlock_irqrestore(&vxi->cvirt.load_lock, flags);
15750 +}
15751 +
15752 +
15753 +/*
15754 + * Commands to do_syslog:
15755 + *
15756 + *      0 -- Close the log.  Currently a NOP.
15757 + *      1 -- Open the log. Currently a NOP.
15758 + *      2 -- Read from the log.
15759 + *      3 -- Read all messages remaining in the ring buffer.
15760 + *      4 -- Read and clear all messages remaining in the ring buffer
15761 + *      5 -- Clear ring buffer.
15762 + *      6 -- Disable printk's to console
15763 + *      7 -- Enable printk's to console
15764 + *      8 -- Set level of messages printed to console
15765 + *      9 -- Return number of unread characters in the log buffer
15766 + *     10 -- Return size of the log buffer
15767 + */
15768 +int vx_do_syslog(int type, char __user *buf, int len)
15769 +{
15770 +       int error = 0;
15771 +       int do_clear = 0;
15772 +       struct vx_info *vxi = current_vx_info();
15773 +       struct _vx_syslog *log;
15774 +
15775 +       if (!vxi)
15776 +               return -EINVAL;
15777 +       log = &vxi->cvirt.syslog;
15778 +
15779 +       switch (type) {
15780 +       case 0:         /* Close log */
15781 +       case 1:         /* Open log */
15782 +               break;
15783 +       case 2:         /* Read from log */
15784 +               error = wait_event_interruptible(log->log_wait,
15785 +                       (log->log_start - log->log_end));
15786 +               if (error)
15787 +                       break;
15788 +               spin_lock_irq(&log->logbuf_lock);
15789 +               spin_unlock_irq(&log->logbuf_lock);
15790 +               break;
15791 +       case 4:         /* Read/clear last kernel messages */
15792 +               do_clear = 1;
15793 +               /* fall through */
15794 +       case 3:         /* Read last kernel messages */
15795 +               return 0;
15796 +
15797 +       case 5:         /* Clear ring buffer */
15798 +               return 0;
15799 +
15800 +       case 6:         /* Disable logging to console */
15801 +       case 7:         /* Enable logging to console */
15802 +       case 8:         /* Set level of messages printed to console */
15803 +               break;
15804 +
15805 +       case 9:         /* Number of chars in the log buffer */
15806 +               return 0;
15807 +       case 10:        /* Size of the log buffer */
15808 +               return 0;
15809 +       default:
15810 +               error = -EINVAL;
15811 +               break;
15812 +       }
15813 +       return error;
15814 +}
15815 +
15816 +
15817 +/* virtual host info names */
15818 +
15819 +static char *vx_vhi_name(struct vx_info *vxi, int id)
15820 +{
15821 +       struct nsproxy *nsproxy;
15822 +       struct uts_namespace *uts;
15823 +
15824 +       if (id == VHIN_CONTEXT)
15825 +               return vxi->vx_name;
15826 +
15827 +       nsproxy = vxi->space[0].vx_nsproxy;
15828 +       if (!nsproxy)
15829 +               return NULL;
15830 +
15831 +       uts = nsproxy->uts_ns;
15832 +       if (!uts)
15833 +               return NULL;
15834 +
15835 +       switch (id) {
15836 +       case VHIN_SYSNAME:
15837 +               return uts->name.sysname;
15838 +       case VHIN_NODENAME:
15839 +               return uts->name.nodename;
15840 +       case VHIN_RELEASE:
15841 +               return uts->name.release;
15842 +       case VHIN_VERSION:
15843 +               return uts->name.version;
15844 +       case VHIN_MACHINE:
15845 +               return uts->name.machine;
15846 +       case VHIN_DOMAINNAME:
15847 +               return uts->name.domainname;
15848 +       default:
15849 +               return NULL;
15850 +       }
15851 +       return NULL;
15852 +}
15853 +
15854 +int vc_set_vhi_name(struct vx_info *vxi, void __user *data)
15855 +{
15856 +       struct vcmd_vhi_name_v0 vc_data;
15857 +       char *name;
15858 +
15859 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15860 +               return -EFAULT;
15861 +
15862 +       name = vx_vhi_name(vxi, vc_data.field);
15863 +       if (!name)
15864 +               return -EINVAL;
15865 +
15866 +       memcpy(name, vc_data.name, 65);
15867 +       return 0;
15868 +}
15869 +
15870 +int vc_get_vhi_name(struct vx_info *vxi, void __user *data)
15871 +{
15872 +       struct vcmd_vhi_name_v0 vc_data;
15873 +       char *name;
15874 +
15875 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15876 +               return -EFAULT;
15877 +
15878 +       name = vx_vhi_name(vxi, vc_data.field);
15879 +       if (!name)
15880 +               return -EINVAL;
15881 +
15882 +       memcpy(vc_data.name, name, 65);
15883 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15884 +               return -EFAULT;
15885 +       return 0;
15886 +}
15887 +
15888 +
15889 +int vc_virt_stat(struct vx_info *vxi, void __user *data)
15890 +{
15891 +       struct vcmd_virt_stat_v0 vc_data;
15892 +       struct _vx_cvirt *cvirt = &vxi->cvirt;
15893 +       struct timespec64 uptime;
15894 +
15895 +       ktime_get_ts(&uptime);
15896 +       set_normalized_timespec(&uptime,
15897 +               uptime.tv_sec - cvirt->bias_uptime.tv_sec,
15898 +               uptime.tv_nsec - cvirt->bias_uptime.tv_nsec);
15899 +
15900 +       vc_data.offset = timespec64_to_ns(&cvirt->bias_ts);
15901 +       vc_data.uptime = timespec64_to_ns(&uptime);
15902 +       vc_data.nr_threads = atomic_read(&cvirt->nr_threads);
15903 +       vc_data.nr_running = atomic_read(&cvirt->nr_running);
15904 +       vc_data.nr_uninterruptible = atomic_read(&cvirt->nr_uninterruptible);
15905 +       vc_data.nr_onhold = atomic_read(&cvirt->nr_onhold);
15906 +       vc_data.nr_forks = atomic_read(&cvirt->total_forks);
15907 +       vc_data.load[0] = cvirt->load[0];
15908 +       vc_data.load[1] = cvirt->load[1];
15909 +       vc_data.load[2] = cvirt->load[2];
15910 +
15911 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15912 +               return -EFAULT;
15913 +       return 0;
15914 +}
15915 +
15916 +
15917 +#ifdef CONFIG_VSERVER_VTIME
15918 +
15919 +/* virtualized time base */
15920 +
15921 +void vx_adjust_timespec(struct timespec *ts)
15922 +{
15923 +       struct vx_info *vxi;
15924 +
15925 +       if (!vx_flags(VXF_VIRT_TIME, 0))
15926 +               return;
15927 +
15928 +       vxi = current_vx_info();
15929 +       ts->tv_sec += vxi->cvirt.bias_ts.tv_sec;
15930 +       ts->tv_nsec += vxi->cvirt.bias_ts.tv_nsec;
15931 +
15932 +       if (ts->tv_nsec >= NSEC_PER_SEC) {
15933 +               ts->tv_sec++;
15934 +               ts->tv_nsec -= NSEC_PER_SEC;
15935 +       } else if (ts->tv_nsec < 0) {
15936 +               ts->tv_sec--;
15937 +               ts->tv_nsec += NSEC_PER_SEC;
15938 +       }
15939 +}
15940 +
15941 +void vx_adjust_timespec64(struct timespec64 *ts)
15942 +{
15943 +       struct vx_info *vxi;
15944 +
15945 +       if (!vx_flags(VXF_VIRT_TIME, 0))
15946 +               return;
15947 +
15948 +       vxi = current_vx_info();
15949 +       ts->tv_sec += vxi->cvirt.bias_ts.tv_sec;
15950 +       ts->tv_nsec += vxi->cvirt.bias_ts.tv_nsec;
15951 +
15952 +       if (ts->tv_nsec >= NSEC_PER_SEC) {
15953 +               ts->tv_sec++;
15954 +               ts->tv_nsec -= NSEC_PER_SEC;
15955 +       } else if (ts->tv_nsec < 0) {
15956 +               ts->tv_sec--;
15957 +               ts->tv_nsec += NSEC_PER_SEC;
15958 +       }
15959 +}
15960 +
15961 +int vx_settimeofday(const struct timespec *ts)
15962 +{
15963 +       struct timespec ats, delta;
15964 +       struct vx_info *vxi;
15965 +
15966 +       if (!vx_flags(VXF_VIRT_TIME, 0))
15967 +               return do_settimeofday(ts);
15968 +
15969 +       getnstimeofday(&ats);
15970 +       delta = timespec_sub(*ts, ats);
15971 +
15972 +       vxi = current_vx_info();
15973 +       vxi->cvirt.bias_ts = timespec64_add(vxi->cvirt.bias_ts,
15974 +               timespec_to_timespec64(delta));
15975 +       return 0;
15976 +}
15977 +
15978 +int vx_settimeofday64(const struct timespec64 *ts)
15979 +{
15980 +       struct timespec64 ats, delta;
15981 +       struct vx_info *vxi;
15982 +
15983 +       if (!vx_flags(VXF_VIRT_TIME, 0))
15984 +               return do_settimeofday64(ts);
15985 +
15986 +       getnstimeofday64(&ats);
15987 +       delta = timespec64_sub(*ts, ats);
15988 +
15989 +       vxi = current_vx_info();
15990 +       vxi->cvirt.bias_ts = timespec64_add(vxi->cvirt.bias_ts, delta);
15991 +       return 0;
15992 +}
15993 +
15994 +#endif
15995 +
15996 diff -NurpP --minimal linux-4.9.76/kernel/vserver/cvirt_init.h linux-4.9.76-vs2.3.9.5/kernel/vserver/cvirt_init.h
15997 --- linux-4.9.76/kernel/vserver/cvirt_init.h    1970-01-01 00:00:00.000000000 +0000
15998 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/cvirt_init.h  2018-01-11 08:38:34.000000000 +0000
15999 @@ -0,0 +1,70 @@
16000 +
16001 +
16002 +extern uint64_t vx_idle_jiffies(void);
16003 +
16004 +static inline void vx_info_init_cvirt(struct _vx_cvirt *cvirt)
16005 +{
16006 +       uint64_t idle_jiffies = vx_idle_jiffies();
16007 +       uint64_t nsuptime;
16008 +
16009 +       ktime_get_ts64(&cvirt->bias_uptime);
16010 +       nsuptime = (unsigned long long)cvirt->bias_uptime.tv_sec
16011 +               * NSEC_PER_SEC + cvirt->bias_uptime.tv_nsec;
16012 +       cvirt->bias_clock = nsec_to_clock_t(nsuptime);
16013 +       cvirt->bias_ts.tv_sec = 0;
16014 +       cvirt->bias_ts.tv_nsec = 0;
16015 +
16016 +       jiffies_to_timespec64(idle_jiffies, &cvirt->bias_idle);
16017 +       atomic_set(&cvirt->nr_threads, 0);
16018 +       atomic_set(&cvirt->nr_running, 0);
16019 +       atomic_set(&cvirt->nr_uninterruptible, 0);
16020 +       atomic_set(&cvirt->nr_onhold, 0);
16021 +
16022 +       spin_lock_init(&cvirt->load_lock);
16023 +       cvirt->load_last = jiffies;
16024 +       atomic_set(&cvirt->load_updates, 0);
16025 +       cvirt->load[0] = 0;
16026 +       cvirt->load[1] = 0;
16027 +       cvirt->load[2] = 0;
16028 +       atomic_set(&cvirt->total_forks, 0);
16029 +
16030 +       spin_lock_init(&cvirt->syslog.logbuf_lock);
16031 +       init_waitqueue_head(&cvirt->syslog.log_wait);
16032 +       cvirt->syslog.log_start = 0;
16033 +       cvirt->syslog.log_end = 0;
16034 +       cvirt->syslog.con_start = 0;
16035 +       cvirt->syslog.logged_chars = 0;
16036 +}
16037 +
16038 +static inline
16039 +void vx_info_init_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc, int cpu)
16040 +{
16041 +       // cvirt_pc->cpustat = { 0 };
16042 +}
16043 +
16044 +static inline void vx_info_exit_cvirt(struct _vx_cvirt *cvirt)
16045 +{
16046 +#ifdef CONFIG_VSERVER_WARN
16047 +       int value;
16048 +#endif
16049 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_threads)),
16050 +               "!!! cvirt: %p[nr_threads] = %d on exit.",
16051 +               cvirt, value);
16052 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_running)),
16053 +               "!!! cvirt: %p[nr_running] = %d on exit.",
16054 +               cvirt, value);
16055 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_uninterruptible)),
16056 +               "!!! cvirt: %p[nr_uninterruptible] = %d on exit.",
16057 +               cvirt, value);
16058 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_onhold)),
16059 +               "!!! cvirt: %p[nr_onhold] = %d on exit.",
16060 +               cvirt, value);
16061 +       return;
16062 +}
16063 +
16064 +static inline
16065 +void vx_info_exit_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc, int cpu)
16066 +{
16067 +       return;
16068 +}
16069 +
16070 diff -NurpP --minimal linux-4.9.76/kernel/vserver/cvirt_proc.h linux-4.9.76-vs2.3.9.5/kernel/vserver/cvirt_proc.h
16071 --- linux-4.9.76/kernel/vserver/cvirt_proc.h    1970-01-01 00:00:00.000000000 +0000
16072 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/cvirt_proc.h  2018-01-11 08:39:19.000000000 +0000
16073 @@ -0,0 +1,123 @@
16074 +#ifndef _VX_CVIRT_PROC_H
16075 +#define _VX_CVIRT_PROC_H
16076 +
16077 +#include <linux/nsproxy.h>
16078 +#include <linux/mnt_namespace.h>
16079 +#include <linux/ipc_namespace.h>
16080 +#include <linux/utsname.h>
16081 +#include <linux/ipc.h>
16082 +
16083 +extern int vx_info_mnt_namespace(struct mnt_namespace *, char *);
16084 +
16085 +static inline
16086 +int vx_info_proc_nsproxy(struct nsproxy *nsproxy, char *buffer)
16087 +{
16088 +       struct mnt_namespace *ns;
16089 +       struct uts_namespace *uts;
16090 +       struct ipc_namespace *ipc;
16091 +       int length = 0;
16092 +
16093 +       if (!nsproxy)
16094 +               goto out;
16095 +
16096 +       length += sprintf(buffer + length,
16097 +               "NSProxy:\t%p [%p,%p,%p]\n",
16098 +               nsproxy, nsproxy->mnt_ns,
16099 +               nsproxy->uts_ns, nsproxy->ipc_ns);
16100 +
16101 +       ns = nsproxy->mnt_ns;
16102 +       if (!ns)
16103 +               goto skip_ns;
16104 +
16105 +       length += vx_info_mnt_namespace(ns, buffer + length);
16106 +
16107 +skip_ns:
16108 +
16109 +       uts = nsproxy->uts_ns;
16110 +       if (!uts)
16111 +               goto skip_uts;
16112 +
16113 +       length += sprintf(buffer + length,
16114 +               "SysName:\t%.*s\n"
16115 +               "NodeName:\t%.*s\n"
16116 +               "Release:\t%.*s\n"
16117 +               "Version:\t%.*s\n"
16118 +               "Machine:\t%.*s\n"
16119 +               "DomainName:\t%.*s\n",
16120 +               __NEW_UTS_LEN, uts->name.sysname,
16121 +               __NEW_UTS_LEN, uts->name.nodename,
16122 +               __NEW_UTS_LEN, uts->name.release,
16123 +               __NEW_UTS_LEN, uts->name.version,
16124 +               __NEW_UTS_LEN, uts->name.machine,
16125 +               __NEW_UTS_LEN, uts->name.domainname);
16126 +skip_uts:
16127 +
16128 +       ipc = nsproxy->ipc_ns;
16129 +       if (!ipc)
16130 +               goto skip_ipc;
16131 +
16132 +       length += sprintf(buffer + length,
16133 +               "SEMS:\t\t%d %d %d %d  %d\n"
16134 +               "MSG:\t\t%d %d %d\n"
16135 +               "SHM:\t\t%lu %lu  %d %ld\n",
16136 +               ipc->sem_ctls[0], ipc->sem_ctls[1],
16137 +               ipc->sem_ctls[2], ipc->sem_ctls[3],
16138 +               ipc->used_sems,
16139 +               ipc->msg_ctlmax, ipc->msg_ctlmnb, ipc->msg_ctlmni,
16140 +               (unsigned long)ipc->shm_ctlmax,
16141 +               (unsigned long)ipc->shm_ctlall,
16142 +               ipc->shm_ctlmni, ipc->shm_tot);
16143 +skip_ipc:
16144 +out:
16145 +       return length;
16146 +}
16147 +
16148 +
16149 +#include <linux/sched.h>
16150 +
16151 +#define LOAD_INT(x) ((x) >> FSHIFT)
16152 +#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1 - 1)) * 100)
16153 +
16154 +static inline
16155 +int vx_info_proc_cvirt(struct _vx_cvirt *cvirt, char *buffer)
16156 +{
16157 +       int length = 0;
16158 +       int a, b, c;
16159 +
16160 +       length += sprintf(buffer + length,
16161 +               "BiasUptime:\t%llu.%02lu\n",
16162 +               (unsigned long long)cvirt->bias_uptime.tv_sec,
16163 +               (cvirt->bias_uptime.tv_nsec / (NSEC_PER_SEC / 100)));
16164 +
16165 +       a = cvirt->load[0] + (FIXED_1 / 200);
16166 +       b = cvirt->load[1] + (FIXED_1 / 200);
16167 +       c = cvirt->load[2] + (FIXED_1 / 200);
16168 +       length += sprintf(buffer + length,
16169 +               "nr_threads:\t%d\n"
16170 +               "nr_running:\t%d\n"
16171 +               "nr_unintr:\t%d\n"
16172 +               "nr_onhold:\t%d\n"
16173 +               "load_updates:\t%d\n"
16174 +               "loadavg:\t%d.%02d %d.%02d %d.%02d\n"
16175 +               "total_forks:\t%d\n",
16176 +               atomic_read(&cvirt->nr_threads),
16177 +               atomic_read(&cvirt->nr_running),
16178 +               atomic_read(&cvirt->nr_uninterruptible),
16179 +               atomic_read(&cvirt->nr_onhold),
16180 +               atomic_read(&cvirt->load_updates),
16181 +               LOAD_INT(a), LOAD_FRAC(a),
16182 +               LOAD_INT(b), LOAD_FRAC(b),
16183 +               LOAD_INT(c), LOAD_FRAC(c),
16184 +               atomic_read(&cvirt->total_forks));
16185 +       return length;
16186 +}
16187 +
16188 +static inline
16189 +int vx_info_proc_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc,
16190 +       char *buffer, int cpu)
16191 +{
16192 +       int length = 0;
16193 +       return length;
16194 +}
16195 +
16196 +#endif /* _VX_CVIRT_PROC_H */
16197 diff -NurpP --minimal linux-4.9.76/kernel/vserver/debug.c linux-4.9.76-vs2.3.9.5/kernel/vserver/debug.c
16198 --- linux-4.9.76/kernel/vserver/debug.c 1970-01-01 00:00:00.000000000 +0000
16199 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/debug.c       2018-01-10 02:50:49.000000000 +0000
16200 @@ -0,0 +1,32 @@
16201 +/*
16202 + *  kernel/vserver/debug.c
16203 + *
16204 + *  Copyright (C) 2005-2007 Herbert P?tzl
16205 + *
16206 + *  V0.01  vx_info dump support
16207 + *
16208 + */
16209 +
16210 +#include <linux/module.h>
16211 +
16212 +#include <linux/vserver/context.h>
16213 +
16214 +
16215 +void   dump_vx_info(struct vx_info *vxi, int level)
16216 +{
16217 +       printk("vx_info %p[#%d, %d.%d, %4x]\n", vxi, vxi->vx_id,
16218 +               atomic_read(&vxi->vx_usecnt),
16219 +               atomic_read(&vxi->vx_tasks),
16220 +               vxi->vx_state);
16221 +       if (level > 0) {
16222 +               __dump_vx_limit(&vxi->limit);
16223 +               __dump_vx_sched(&vxi->sched);
16224 +               __dump_vx_cvirt(&vxi->cvirt);
16225 +               __dump_vx_cacct(&vxi->cacct);
16226 +       }
16227 +       printk("---\n");
16228 +}
16229 +
16230 +
16231 +EXPORT_SYMBOL_GPL(dump_vx_info);
16232 +
16233 diff -NurpP --minimal linux-4.9.76/kernel/vserver/device.c linux-4.9.76-vs2.3.9.5/kernel/vserver/device.c
16234 --- linux-4.9.76/kernel/vserver/device.c        1970-01-01 00:00:00.000000000 +0000
16235 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/device.c      2018-01-10 02:50:49.000000000 +0000
16236 @@ -0,0 +1,443 @@
16237 +/*
16238 + *  linux/kernel/vserver/device.c
16239 + *
16240 + *  Linux-VServer: Device Support
16241 + *
16242 + *  Copyright (C) 2006  Herbert P?tzl
16243 + *  Copyright (C) 2007  Daniel Hokka Zakrisson
16244 + *
16245 + *  V0.01  device mapping basics
16246 + *  V0.02  added defaults
16247 + *
16248 + */
16249 +
16250 +#include <linux/slab.h>
16251 +#include <linux/rcupdate.h>
16252 +#include <linux/fs.h>
16253 +#include <linux/namei.h>
16254 +#include <linux/hash.h>
16255 +
16256 +#include <asm/errno.h>
16257 +#include <asm/uaccess.h>
16258 +#include <linux/vserver/base.h>
16259 +#include <linux/vserver/debug.h>
16260 +#include <linux/vserver/context.h>
16261 +#include <linux/vserver/device.h>
16262 +#include <linux/vserver/device_cmd.h>
16263 +
16264 +
16265 +#define DMAP_HASH_BITS 4
16266 +
16267 +
16268 +struct vs_mapping {
16269 +       union {
16270 +               struct hlist_node hlist;
16271 +               struct list_head list;
16272 +       } u;
16273 +#define dm_hlist       u.hlist
16274 +#define dm_list                u.list
16275 +       vxid_t xid;
16276 +       dev_t device;
16277 +       struct vx_dmap_target target;
16278 +};
16279 +
16280 +
16281 +static struct hlist_head dmap_main_hash[1 << DMAP_HASH_BITS];
16282 +
16283 +static DEFINE_SPINLOCK(dmap_main_hash_lock);
16284 +
16285 +static struct vx_dmap_target dmap_defaults[2] = {
16286 +       { .flags = DATTR_OPEN },
16287 +       { .flags = DATTR_OPEN },
16288 +};
16289 +
16290 +
16291 +struct kmem_cache *dmap_cachep __read_mostly;
16292 +
16293 +int __init dmap_cache_init(void)
16294 +{
16295 +       dmap_cachep = kmem_cache_create("dmap_cache",
16296 +               sizeof(struct vs_mapping), 0,
16297 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
16298 +       return 0;
16299 +}
16300 +
16301 +__initcall(dmap_cache_init);
16302 +
16303 +
16304 +static inline unsigned int __hashval(dev_t dev, int bits)
16305 +{
16306 +       return hash_long((unsigned long)dev, bits);
16307 +}
16308 +
16309 +
16310 +/*     __hash_mapping()
16311 + *     add the mapping to the hash table
16312 + */
16313 +static inline void __hash_mapping(struct vx_info *vxi, struct vs_mapping *vdm)
16314 +{
16315 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16316 +       struct hlist_head *head, *hash = dmap_main_hash;
16317 +       int device = vdm->device;
16318 +
16319 +       spin_lock(hash_lock);
16320 +       vxdprintk(VXD_CBIT(misc, 8), "__hash_mapping: %p[#%d] %08x:%08x",
16321 +               vxi, vxi ? vxi->vx_id : 0, device, vdm->target.target);
16322 +
16323 +       head = &hash[__hashval(device, DMAP_HASH_BITS)];
16324 +       hlist_add_head(&vdm->dm_hlist, head);
16325 +       spin_unlock(hash_lock);
16326 +}
16327 +
16328 +
16329 +static inline int __mode_to_default(umode_t mode)
16330 +{
16331 +       switch (mode) {
16332 +       case S_IFBLK:
16333 +               return 0;
16334 +       case S_IFCHR:
16335 +               return 1;
16336 +       default:
16337 +               BUG();
16338 +       }
16339 +}
16340 +
16341 +
16342 +/*     __set_default()
16343 + *     set a default
16344 + */
16345 +static inline void __set_default(struct vx_info *vxi, umode_t mode,
16346 +       struct vx_dmap_target *vdmt)
16347 +{
16348 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16349 +       spin_lock(hash_lock);
16350 +
16351 +       if (vxi)
16352 +               vxi->dmap.targets[__mode_to_default(mode)] = *vdmt;
16353 +       else
16354 +               dmap_defaults[__mode_to_default(mode)] = *vdmt;
16355 +
16356 +
16357 +       spin_unlock(hash_lock);
16358 +
16359 +       vxdprintk(VXD_CBIT(misc, 8), "__set_default: %p[#%u] %08x %04x",
16360 +                 vxi, vxi ? vxi->vx_id : 0, vdmt->target, vdmt->flags);
16361 +}
16362 +
16363 +
16364 +/*     __remove_default()
16365 + *     remove a default
16366 + */
16367 +static inline int __remove_default(struct vx_info *vxi, umode_t mode)
16368 +{
16369 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16370 +       spin_lock(hash_lock);
16371 +
16372 +       if (vxi)
16373 +               vxi->dmap.targets[__mode_to_default(mode)].flags = 0;
16374 +       else    /* remove == reset */
16375 +               dmap_defaults[__mode_to_default(mode)].flags = DATTR_OPEN | mode;
16376 +
16377 +       spin_unlock(hash_lock);
16378 +       return 0;
16379 +}
16380 +
16381 +
16382 +/*     __find_mapping()
16383 + *     find a mapping in the hash table
16384 + *
16385 + *     caller must hold hash_lock
16386 + */
16387 +static inline int __find_mapping(vxid_t xid, dev_t device, umode_t mode,
16388 +       struct vs_mapping **local, struct vs_mapping **global)
16389 +{
16390 +       struct hlist_head *hash = dmap_main_hash;
16391 +       struct hlist_head *head = &hash[__hashval(device, DMAP_HASH_BITS)];
16392 +       struct hlist_node *pos;
16393 +       struct vs_mapping *vdm;
16394 +
16395 +       *local = NULL;
16396 +       if (global)
16397 +               *global = NULL;
16398 +
16399 +       hlist_for_each(pos, head) {
16400 +               vdm = hlist_entry(pos, struct vs_mapping, dm_hlist);
16401 +
16402 +               if ((vdm->device == device) &&
16403 +                       !((vdm->target.flags ^ mode) & S_IFMT)) {
16404 +                       if (vdm->xid == xid) {
16405 +                               *local = vdm;
16406 +                               return 1;
16407 +                       } else if (global && vdm->xid == 0)
16408 +                               *global = vdm;
16409 +               }
16410 +       }
16411 +
16412 +       if (global && *global)
16413 +               return 0;
16414 +       else
16415 +               return -ENOENT;
16416 +}
16417 +
16418 +
16419 +/*     __lookup_mapping()
16420 + *     find a mapping and store the result in target and flags
16421 + */
16422 +static inline int __lookup_mapping(struct vx_info *vxi,
16423 +       dev_t device, dev_t *target, int *flags, umode_t mode)
16424 +{
16425 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16426 +       struct vs_mapping *vdm, *global;
16427 +       struct vx_dmap_target *vdmt;
16428 +       int ret = 0;
16429 +       vxid_t xid = vxi->vx_id;
16430 +       int index;
16431 +
16432 +       spin_lock(hash_lock);
16433 +       if (__find_mapping(xid, device, mode, &vdm, &global) > 0) {
16434 +               ret = 1;
16435 +               vdmt = &vdm->target;
16436 +               goto found;
16437 +       }
16438 +
16439 +       index = __mode_to_default(mode);
16440 +       if (vxi && vxi->dmap.targets[index].flags) {
16441 +               ret = 2;
16442 +               vdmt = &vxi->dmap.targets[index];
16443 +       } else if (global) {
16444 +               ret = 3;
16445 +               vdmt = &global->target;
16446 +               goto found;
16447 +       } else {
16448 +               ret = 4;
16449 +               vdmt = &dmap_defaults[index];
16450 +       }
16451 +
16452 +found:
16453 +       if (target && (vdmt->flags & DATTR_REMAP))
16454 +               *target = vdmt->target;
16455 +       else if (target)
16456 +               *target = device;
16457 +       if (flags)
16458 +               *flags = vdmt->flags;
16459 +
16460 +       spin_unlock(hash_lock);
16461 +
16462 +       return ret;
16463 +}
16464 +
16465 +
16466 +/*     __remove_mapping()
16467 + *     remove a mapping from the hash table
16468 + */
16469 +static inline int __remove_mapping(struct vx_info *vxi, dev_t device,
16470 +       umode_t mode)
16471 +{
16472 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16473 +       struct vs_mapping *vdm = NULL;
16474 +       int ret = 0;
16475 +
16476 +       spin_lock(hash_lock);
16477 +
16478 +       ret = __find_mapping((vxi ? vxi->vx_id : 0), device, mode, &vdm,
16479 +               NULL);
16480 +       vxdprintk(VXD_CBIT(misc, 8), "__remove_mapping: %p[#%d] %08x %04x",
16481 +               vxi, vxi ? vxi->vx_id : 0, device, mode);
16482 +       if (ret < 0)
16483 +               goto out;
16484 +       hlist_del(&vdm->dm_hlist);
16485 +
16486 +out:
16487 +       spin_unlock(hash_lock);
16488 +       if (vdm)
16489 +               kmem_cache_free(dmap_cachep, vdm);
16490 +       return ret;
16491 +}
16492 +
16493 +
16494 +
16495 +int vs_map_device(struct vx_info *vxi,
16496 +       dev_t device, dev_t *target, umode_t mode)
16497 +{
16498 +       int ret, flags = DATTR_MASK;
16499 +
16500 +       if (!vxi) {
16501 +               if (target)
16502 +                       *target = device;
16503 +               goto out;
16504 +       }
16505 +       ret = __lookup_mapping(vxi, device, target, &flags, mode);
16506 +       vxdprintk(VXD_CBIT(misc, 8), "vs_map_device: %08x target: %08x flags: %04x mode: %04x mapped=%d",
16507 +               device, target ? *target : 0, flags, mode, ret);
16508 +out:
16509 +       return (flags & DATTR_MASK);
16510 +}
16511 +
16512 +
16513 +
16514 +static int do_set_mapping(struct vx_info *vxi,
16515 +       dev_t device, dev_t target, int flags, umode_t mode)
16516 +{
16517 +       if (device) {
16518 +               struct vs_mapping *new;
16519 +
16520 +               new = kmem_cache_alloc(dmap_cachep, GFP_KERNEL);
16521 +               if (!new)
16522 +                       return -ENOMEM;
16523 +
16524 +               INIT_HLIST_NODE(&new->dm_hlist);
16525 +               new->device = device;
16526 +               new->target.target = target;
16527 +               new->target.flags = flags | mode;
16528 +               new->xid = (vxi ? vxi->vx_id : 0);
16529 +
16530 +               vxdprintk(VXD_CBIT(misc, 8), "do_set_mapping: %08x target: %08x flags: %04x", device, target, flags);
16531 +               __hash_mapping(vxi, new);
16532 +       } else {
16533 +               struct vx_dmap_target new = {
16534 +                       .target = target,
16535 +                       .flags = flags | mode,
16536 +               };
16537 +               __set_default(vxi, mode, &new);
16538 +       }
16539 +       return 0;
16540 +}
16541 +
16542 +
16543 +static int do_unset_mapping(struct vx_info *vxi,
16544 +       dev_t device, dev_t target, int flags, umode_t mode)
16545 +{
16546 +       int ret = -EINVAL;
16547 +
16548 +       if (device) {
16549 +               ret = __remove_mapping(vxi, device, mode);
16550 +               if (ret < 0)
16551 +                       goto out;
16552 +       } else {
16553 +               ret = __remove_default(vxi, mode);
16554 +               if (ret < 0)
16555 +                       goto out;
16556 +       }
16557 +
16558 +out:
16559 +       return ret;
16560 +}
16561 +
16562 +
16563 +static inline int __user_device(const char __user *name, dev_t *dev,
16564 +       umode_t *mode)
16565 +{
16566 +       struct path path;
16567 +       int ret;
16568 +
16569 +       if (!name) {
16570 +               *dev = 0;
16571 +               return 0;
16572 +       }
16573 +       ret = user_lpath(name, &path);
16574 +       if (ret)
16575 +               return ret;
16576 +       if (path.dentry->d_inode) {
16577 +               *dev = path.dentry->d_inode->i_rdev;
16578 +               *mode = path.dentry->d_inode->i_mode;
16579 +       }
16580 +       path_put(&path);
16581 +       return 0;
16582 +}
16583 +
16584 +static inline int __mapping_mode(dev_t device, dev_t target,
16585 +       umode_t device_mode, umode_t target_mode, umode_t *mode)
16586 +{
16587 +       if (device)
16588 +               *mode = device_mode & S_IFMT;
16589 +       else if (target)
16590 +               *mode = target_mode & S_IFMT;
16591 +       else
16592 +               return -EINVAL;
16593 +
16594 +       /* if both given, device and target mode have to match */
16595 +       if (device && target &&
16596 +               ((device_mode ^ target_mode) & S_IFMT))
16597 +               return -EINVAL;
16598 +       return 0;
16599 +}
16600 +
16601 +
16602 +static inline int do_mapping(struct vx_info *vxi, const char __user *device_path,
16603 +       const char __user *target_path, int flags, int set)
16604 +{
16605 +       dev_t device = ~0, target = ~0;
16606 +       umode_t device_mode = 0, target_mode = 0, mode;
16607 +       int ret;
16608 +
16609 +       ret = __user_device(device_path, &device, &device_mode);
16610 +       if (ret)
16611 +               return ret;
16612 +       ret = __user_device(target_path, &target, &target_mode);
16613 +       if (ret)
16614 +               return ret;
16615 +
16616 +       ret = __mapping_mode(device, target,
16617 +               device_mode, target_mode, &mode);
16618 +       if (ret)
16619 +               return ret;
16620 +
16621 +       if (set)
16622 +               return do_set_mapping(vxi, device, target,
16623 +                       flags, mode);
16624 +       else
16625 +               return do_unset_mapping(vxi, device, target,
16626 +                       flags, mode);
16627 +}
16628 +
16629 +
16630 +int vc_set_mapping(struct vx_info *vxi, void __user *data)
16631 +{
16632 +       struct vcmd_set_mapping_v0 vc_data;
16633 +
16634 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16635 +               return -EFAULT;
16636 +
16637 +       return do_mapping(vxi, vc_data.device, vc_data.target,
16638 +               vc_data.flags, 1);
16639 +}
16640 +
16641 +int vc_unset_mapping(struct vx_info *vxi, void __user *data)
16642 +{
16643 +       struct vcmd_set_mapping_v0 vc_data;
16644 +
16645 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16646 +               return -EFAULT;
16647 +
16648 +       return do_mapping(vxi, vc_data.device, vc_data.target,
16649 +               vc_data.flags, 0);
16650 +}
16651 +
16652 +
16653 +#ifdef CONFIG_COMPAT
16654 +
16655 +int vc_set_mapping_x32(struct vx_info *vxi, void __user *data)
16656 +{
16657 +       struct vcmd_set_mapping_v0_x32 vc_data;
16658 +
16659 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16660 +               return -EFAULT;
16661 +
16662 +       return do_mapping(vxi, compat_ptr(vc_data.device_ptr),
16663 +               compat_ptr(vc_data.target_ptr), vc_data.flags, 1);
16664 +}
16665 +
16666 +int vc_unset_mapping_x32(struct vx_info *vxi, void __user *data)
16667 +{
16668 +       struct vcmd_set_mapping_v0_x32 vc_data;
16669 +
16670 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16671 +               return -EFAULT;
16672 +
16673 +       return do_mapping(vxi, compat_ptr(vc_data.device_ptr),
16674 +               compat_ptr(vc_data.target_ptr), vc_data.flags, 0);
16675 +}
16676 +
16677 +#endif /* CONFIG_COMPAT */
16678 +
16679 +
16680 diff -NurpP --minimal linux-4.9.76/kernel/vserver/dlimit.c linux-4.9.76-vs2.3.9.5/kernel/vserver/dlimit.c
16681 --- linux-4.9.76/kernel/vserver/dlimit.c        1970-01-01 00:00:00.000000000 +0000
16682 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/dlimit.c      2018-01-10 02:50:49.000000000 +0000
16683 @@ -0,0 +1,528 @@
16684 +/*
16685 + *  linux/kernel/vserver/dlimit.c
16686 + *
16687 + *  Virtual Server: Context Disk Limits
16688 + *
16689 + *  Copyright (C) 2004-2009  Herbert P?tzl
16690 + *
16691 + *  V0.01  initial version
16692 + *  V0.02  compat32 splitup
16693 + *  V0.03  extended interface
16694 + *
16695 + */
16696 +
16697 +#include <linux/statfs.h>
16698 +#include <linux/sched.h>
16699 +#include <linux/namei.h>
16700 +#include <linux/vs_tag.h>
16701 +#include <linux/vs_dlimit.h>
16702 +#include <linux/vserver/dlimit_cmd.h>
16703 +#include <linux/slab.h>
16704 +// #include <linux/gfp.h>
16705 +
16706 +#include <asm/uaccess.h>
16707 +
16708 +/*     __alloc_dl_info()
16709 +
16710 +       * allocate an initialized dl_info struct
16711 +       * doesn't make it visible (hash)                        */
16712 +
16713 +static struct dl_info *__alloc_dl_info(struct super_block *sb, vtag_t tag)
16714 +{
16715 +       struct dl_info *new = NULL;
16716 +
16717 +       vxdprintk(VXD_CBIT(dlim, 5),
16718 +               "alloc_dl_info(%p,%d)*", sb, tag);
16719 +
16720 +       /* would this benefit from a slab cache? */
16721 +       new = kmalloc(sizeof(struct dl_info), GFP_KERNEL);
16722 +       if (!new)
16723 +               return 0;
16724 +
16725 +       memset(new, 0, sizeof(struct dl_info));
16726 +       new->dl_tag = tag;
16727 +       new->dl_sb = sb;
16728 +       // INIT_RCU_HEAD(&new->dl_rcu);
16729 +       INIT_HLIST_NODE(&new->dl_hlist);
16730 +       spin_lock_init(&new->dl_lock);
16731 +       atomic_set(&new->dl_refcnt, 0);
16732 +       atomic_set(&new->dl_usecnt, 0);
16733 +
16734 +       /* rest of init goes here */
16735 +
16736 +       vxdprintk(VXD_CBIT(dlim, 4),
16737 +               "alloc_dl_info(%p,%d) = %p", sb, tag, new);
16738 +       return new;
16739 +}
16740 +
16741 +/*     __dealloc_dl_info()
16742 +
16743 +       * final disposal of dl_info                             */
16744 +
16745 +static void __dealloc_dl_info(struct dl_info *dli)
16746 +{
16747 +       vxdprintk(VXD_CBIT(dlim, 4),
16748 +               "dealloc_dl_info(%p)", dli);
16749 +
16750 +       dli->dl_hlist.next = LIST_POISON1;
16751 +       dli->dl_tag = -1;
16752 +       dli->dl_sb = 0;
16753 +
16754 +       BUG_ON(atomic_read(&dli->dl_usecnt));
16755 +       BUG_ON(atomic_read(&dli->dl_refcnt));
16756 +
16757 +       kfree(dli);
16758 +}
16759 +
16760 +
16761 +/*     hash table for dl_info hash */
16762 +
16763 +#define DL_HASH_SIZE   13
16764 +
16765 +struct hlist_head dl_info_hash[DL_HASH_SIZE];
16766 +
16767 +static DEFINE_SPINLOCK(dl_info_hash_lock);
16768 +
16769 +
16770 +static inline unsigned int __hashval(struct super_block *sb, vtag_t tag)
16771 +{
16772 +       return ((tag ^ (unsigned long)sb) % DL_HASH_SIZE);
16773 +}
16774 +
16775 +
16776 +
16777 +/*     __hash_dl_info()
16778 +
16779 +       * add the dli to the global hash table
16780 +       * requires the hash_lock to be held                     */
16781 +
16782 +static inline void __hash_dl_info(struct dl_info *dli)
16783 +{
16784 +       struct hlist_head *head;
16785 +
16786 +       vxdprintk(VXD_CBIT(dlim, 6),
16787 +               "__hash_dl_info: %p[#%d]", dli, dli->dl_tag);
16788 +       get_dl_info(dli);
16789 +       head = &dl_info_hash[__hashval(dli->dl_sb, dli->dl_tag)];
16790 +       hlist_add_head_rcu(&dli->dl_hlist, head);
16791 +}
16792 +
16793 +/*     __unhash_dl_info()
16794 +
16795 +       * remove the dli from the global hash table
16796 +       * requires the hash_lock to be held                     */
16797 +
16798 +static inline void __unhash_dl_info(struct dl_info *dli)
16799 +{
16800 +       vxdprintk(VXD_CBIT(dlim, 6),
16801 +               "__unhash_dl_info: %p[#%d]", dli, dli->dl_tag);
16802 +       hlist_del_rcu(&dli->dl_hlist);
16803 +       put_dl_info(dli);
16804 +}
16805 +
16806 +
16807 +/*     __lookup_dl_info()
16808 +
16809 +       * requires the rcu_read_lock()
16810 +       * doesn't increment the dl_refcnt                       */
16811 +
16812 +static inline struct dl_info *__lookup_dl_info(struct super_block *sb, vtag_t tag)
16813 +{
16814 +       struct hlist_head *head = &dl_info_hash[__hashval(sb, tag)];
16815 +       struct dl_info *dli;
16816 +
16817 +       hlist_for_each_entry_rcu(dli, head, dl_hlist) {
16818 +               if (dli->dl_tag == tag && dli->dl_sb == sb)
16819 +                       return dli;
16820 +       }
16821 +       return NULL;
16822 +}
16823 +
16824 +
16825 +struct dl_info *locate_dl_info(struct super_block *sb, vtag_t tag)
16826 +{
16827 +       struct dl_info *dli;
16828 +
16829 +       rcu_read_lock();
16830 +       dli = get_dl_info(__lookup_dl_info(sb, tag));
16831 +       vxdprintk(VXD_CBIT(dlim, 7),
16832 +               "locate_dl_info(%p,#%d) = %p", sb, tag, dli);
16833 +       rcu_read_unlock();
16834 +       return dli;
16835 +}
16836 +
16837 +void rcu_free_dl_info(struct rcu_head *head)
16838 +{
16839 +       struct dl_info *dli = container_of(head, struct dl_info, dl_rcu);
16840 +       int usecnt, refcnt;
16841 +
16842 +       BUG_ON(!dli || !head);
16843 +
16844 +       usecnt = atomic_read(&dli->dl_usecnt);
16845 +       BUG_ON(usecnt < 0);
16846 +
16847 +       refcnt = atomic_read(&dli->dl_refcnt);
16848 +       BUG_ON(refcnt < 0);
16849 +
16850 +       vxdprintk(VXD_CBIT(dlim, 3),
16851 +               "rcu_free_dl_info(%p)", dli);
16852 +       if (!usecnt)
16853 +               __dealloc_dl_info(dli);
16854 +       else
16855 +               printk("!!! rcu didn't free\n");
16856 +}
16857 +
16858 +
16859 +
16860 +
16861 +static int do_addrem_dlimit(uint32_t id, const char __user *name,
16862 +       uint32_t flags, int add)
16863 +{
16864 +       struct path path;
16865 +       int ret;
16866 +
16867 +       ret = user_lpath(name, &path);
16868 +       if (!ret) {
16869 +               struct super_block *sb;
16870 +               struct dl_info *dli;
16871 +
16872 +               ret = -EINVAL;
16873 +               if (!path.dentry->d_inode)
16874 +                       goto out_release;
16875 +               if (!(sb = path.dentry->d_inode->i_sb))
16876 +                       goto out_release;
16877 +
16878 +               if (add) {
16879 +                       dli = __alloc_dl_info(sb, id);
16880 +                       spin_lock(&dl_info_hash_lock);
16881 +
16882 +                       ret = -EEXIST;
16883 +                       if (__lookup_dl_info(sb, id))
16884 +                               goto out_unlock;
16885 +                       __hash_dl_info(dli);
16886 +                       dli = NULL;
16887 +               } else {
16888 +                       spin_lock(&dl_info_hash_lock);
16889 +                       dli = __lookup_dl_info(sb, id);
16890 +
16891 +                       ret = -ESRCH;
16892 +                       if (!dli)
16893 +                               goto out_unlock;
16894 +                       __unhash_dl_info(dli);
16895 +               }
16896 +               ret = 0;
16897 +       out_unlock:
16898 +               spin_unlock(&dl_info_hash_lock);
16899 +               if (add && dli)
16900 +                       __dealloc_dl_info(dli);
16901 +       out_release:
16902 +               path_put(&path);
16903 +       }
16904 +       return ret;
16905 +}
16906 +
16907 +int vc_add_dlimit(uint32_t id, void __user *data)
16908 +{
16909 +       struct vcmd_ctx_dlimit_base_v0 vc_data;
16910 +
16911 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16912 +               return -EFAULT;
16913 +
16914 +       return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 1);
16915 +}
16916 +
16917 +int vc_rem_dlimit(uint32_t id, void __user *data)
16918 +{
16919 +       struct vcmd_ctx_dlimit_base_v0 vc_data;
16920 +
16921 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16922 +               return -EFAULT;
16923 +
16924 +       return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 0);
16925 +}
16926 +
16927 +#ifdef CONFIG_COMPAT
16928 +
16929 +int vc_add_dlimit_x32(uint32_t id, void __user *data)
16930 +{
16931 +       struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
16932 +
16933 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16934 +               return -EFAULT;
16935 +
16936 +       return do_addrem_dlimit(id,
16937 +               compat_ptr(vc_data.name_ptr), vc_data.flags, 1);
16938 +}
16939 +
16940 +int vc_rem_dlimit_x32(uint32_t id, void __user *data)
16941 +{
16942 +       struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
16943 +
16944 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16945 +               return -EFAULT;
16946 +
16947 +       return do_addrem_dlimit(id,
16948 +               compat_ptr(vc_data.name_ptr), vc_data.flags, 0);
16949 +}
16950 +
16951 +#endif /* CONFIG_COMPAT */
16952 +
16953 +
16954 +static inline
16955 +int do_set_dlimit(uint32_t id, const char __user *name,
16956 +       uint32_t space_used, uint32_t space_total,
16957 +       uint32_t inodes_used, uint32_t inodes_total,
16958 +       uint32_t reserved, uint32_t flags)
16959 +{
16960 +       struct path path;
16961 +       int ret;
16962 +
16963 +       ret = user_lpath(name, &path);
16964 +       if (!ret) {
16965 +               struct super_block *sb;
16966 +               struct dl_info *dli;
16967 +
16968 +               ret = -EINVAL;
16969 +               if (!path.dentry->d_inode)
16970 +                       goto out_release;
16971 +               if (!(sb = path.dentry->d_inode->i_sb))
16972 +                       goto out_release;
16973 +
16974 +               /* sanity checks */
16975 +               if ((reserved != CDLIM_KEEP &&
16976 +                       reserved > 100) ||
16977 +                       (inodes_used != CDLIM_KEEP &&
16978 +                       inodes_used > inodes_total) ||
16979 +                       (space_used != CDLIM_KEEP &&
16980 +                       space_used > space_total))
16981 +                       goto out_release;
16982 +
16983 +               ret = -ESRCH;
16984 +               dli = locate_dl_info(sb, id);
16985 +               if (!dli)
16986 +                       goto out_release;
16987 +
16988 +               spin_lock(&dli->dl_lock);
16989 +
16990 +               if (inodes_used != CDLIM_KEEP)
16991 +                       dli->dl_inodes_used = inodes_used;
16992 +               if (inodes_total != CDLIM_KEEP)
16993 +                       dli->dl_inodes_total = inodes_total;
16994 +               if (space_used != CDLIM_KEEP)
16995 +                       dli->dl_space_used = dlimit_space_32to64(
16996 +                               space_used, flags, DLIMS_USED);
16997 +
16998 +               if (space_total == CDLIM_INFINITY)
16999 +                       dli->dl_space_total = DLIM_INFINITY;
17000 +               else if (space_total != CDLIM_KEEP)
17001 +                       dli->dl_space_total = dlimit_space_32to64(
17002 +                               space_total, flags, DLIMS_TOTAL);
17003 +
17004 +               if (reserved != CDLIM_KEEP)
17005 +                       dli->dl_nrlmult = (1 << 10) * (100 - reserved) / 100;
17006 +
17007 +               spin_unlock(&dli->dl_lock);
17008 +
17009 +               put_dl_info(dli);
17010 +               ret = 0;
17011 +
17012 +       out_release:
17013 +               path_put(&path);
17014 +       }
17015 +       return ret;
17016 +}
17017 +
17018 +int vc_set_dlimit(uint32_t id, void __user *data)
17019 +{
17020 +       struct vcmd_ctx_dlimit_v0 vc_data;
17021 +
17022 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17023 +               return -EFAULT;
17024 +
17025 +       return do_set_dlimit(id, vc_data.name,
17026 +               vc_data.space_used, vc_data.space_total,
17027 +               vc_data.inodes_used, vc_data.inodes_total,
17028 +               vc_data.reserved, vc_data.flags);
17029 +}
17030 +
17031 +#ifdef CONFIG_COMPAT
17032 +
17033 +int vc_set_dlimit_x32(uint32_t id, void __user *data)
17034 +{
17035 +       struct vcmd_ctx_dlimit_v0_x32 vc_data;
17036 +
17037 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17038 +               return -EFAULT;
17039 +
17040 +       return do_set_dlimit(id, compat_ptr(vc_data.name_ptr),
17041 +               vc_data.space_used, vc_data.space_total,
17042 +               vc_data.inodes_used, vc_data.inodes_total,
17043 +               vc_data.reserved, vc_data.flags);
17044 +}
17045 +
17046 +#endif /* CONFIG_COMPAT */
17047 +
17048 +
17049 +static inline
17050 +int do_get_dlimit(uint32_t id, const char __user *name,
17051 +       uint32_t *space_used, uint32_t *space_total,
17052 +       uint32_t *inodes_used, uint32_t *inodes_total,
17053 +       uint32_t *reserved, uint32_t *flags)
17054 +{
17055 +       struct path path;
17056 +       int ret;
17057 +
17058 +       ret = user_lpath(name, &path);
17059 +       if (!ret) {
17060 +               struct super_block *sb;
17061 +               struct dl_info *dli;
17062 +
17063 +               ret = -EINVAL;
17064 +               if (!path.dentry->d_inode)
17065 +                       goto out_release;
17066 +               if (!(sb = path.dentry->d_inode->i_sb))
17067 +                       goto out_release;
17068 +
17069 +               ret = -ESRCH;
17070 +               dli = locate_dl_info(sb, id);
17071 +               if (!dli)
17072 +                       goto out_release;
17073 +
17074 +               spin_lock(&dli->dl_lock);
17075 +               *inodes_used = dli->dl_inodes_used;
17076 +               *inodes_total = dli->dl_inodes_total;
17077 +
17078 +               *space_used = dlimit_space_64to32(
17079 +                       dli->dl_space_used, flags, DLIMS_USED);
17080 +
17081 +               if (dli->dl_space_total == DLIM_INFINITY)
17082 +                       *space_total = CDLIM_INFINITY;
17083 +               else
17084 +                       *space_total = dlimit_space_64to32(
17085 +                               dli->dl_space_total, flags, DLIMS_TOTAL);
17086 +
17087 +               *reserved = 100 - ((dli->dl_nrlmult * 100 + 512) >> 10);
17088 +               spin_unlock(&dli->dl_lock);
17089 +
17090 +               put_dl_info(dli);
17091 +               ret = -EFAULT;
17092 +
17093 +               ret = 0;
17094 +       out_release:
17095 +               path_put(&path);
17096 +       }
17097 +       return ret;
17098 +}
17099 +
17100 +
17101 +int vc_get_dlimit(uint32_t id, void __user *data)
17102 +{
17103 +       struct vcmd_ctx_dlimit_v0 vc_data;
17104 +       int ret;
17105 +
17106 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17107 +               return -EFAULT;
17108 +
17109 +       ret = do_get_dlimit(id, vc_data.name,
17110 +               &vc_data.space_used, &vc_data.space_total,
17111 +               &vc_data.inodes_used, &vc_data.inodes_total,
17112 +               &vc_data.reserved, &vc_data.flags);
17113 +       if (ret)
17114 +               return ret;
17115 +
17116 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17117 +               return -EFAULT;
17118 +       return 0;
17119 +}
17120 +
17121 +#ifdef CONFIG_COMPAT
17122 +
17123 +int vc_get_dlimit_x32(uint32_t id, void __user *data)
17124 +{
17125 +       struct vcmd_ctx_dlimit_v0_x32 vc_data;
17126 +       int ret;
17127 +
17128 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17129 +               return -EFAULT;
17130 +
17131 +       ret = do_get_dlimit(id, compat_ptr(vc_data.name_ptr),
17132 +               &vc_data.space_used, &vc_data.space_total,
17133 +               &vc_data.inodes_used, &vc_data.inodes_total,
17134 +               &vc_data.reserved, &vc_data.flags);
17135 +       if (ret)
17136 +               return ret;
17137 +
17138 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17139 +               return -EFAULT;
17140 +       return 0;
17141 +}
17142 +
17143 +#endif /* CONFIG_COMPAT */
17144 +
17145 +
17146 +void vx_vsi_statfs(struct super_block *sb, struct kstatfs *buf)
17147 +{
17148 +       struct dl_info *dli;
17149 +       __u64 blimit, bfree, bavail;
17150 +       __u32 ifree;
17151 +
17152 +       dli = locate_dl_info(sb, dx_current_tag());
17153 +       if (!dli)
17154 +               return;
17155 +
17156 +       spin_lock(&dli->dl_lock);
17157 +       if (dli->dl_inodes_total == (unsigned long)DLIM_INFINITY)
17158 +               goto no_ilim;
17159 +
17160 +       /* reduce max inodes available to limit */
17161 +       if (buf->f_files > dli->dl_inodes_total)
17162 +               buf->f_files = dli->dl_inodes_total;
17163 +
17164 +       ifree = dli->dl_inodes_total - dli->dl_inodes_used;
17165 +       /* reduce free inodes to min */
17166 +       if (ifree < buf->f_ffree)
17167 +               buf->f_ffree = ifree;
17168 +
17169 +no_ilim:
17170 +       if (dli->dl_space_total == DLIM_INFINITY)
17171 +               goto no_blim;
17172 +
17173 +       blimit = dli->dl_space_total >> sb->s_blocksize_bits;
17174 +
17175 +       if (dli->dl_space_total < dli->dl_space_used)
17176 +               bfree = 0;
17177 +       else
17178 +               bfree = (dli->dl_space_total - dli->dl_space_used)
17179 +                       >> sb->s_blocksize_bits;
17180 +
17181 +       bavail = ((dli->dl_space_total >> 10) * dli->dl_nrlmult);
17182 +       if (bavail < dli->dl_space_used)
17183 +               bavail = 0;
17184 +       else
17185 +               bavail = (bavail - dli->dl_space_used)
17186 +                       >> sb->s_blocksize_bits;
17187 +
17188 +       /* reduce max space available to limit */
17189 +       if (buf->f_blocks > blimit)
17190 +               buf->f_blocks = blimit;
17191 +
17192 +       /* reduce free space to min */
17193 +       if (bfree < buf->f_bfree)
17194 +               buf->f_bfree = bfree;
17195 +
17196 +       /* reduce avail space to min */
17197 +       if (bavail < buf->f_bavail)
17198 +               buf->f_bavail = bavail;
17199 +
17200 +no_blim:
17201 +       spin_unlock(&dli->dl_lock);
17202 +       put_dl_info(dli);
17203 +
17204 +       return;
17205 +}
17206 +
17207 +#include <linux/module.h>
17208 +
17209 +EXPORT_SYMBOL_GPL(locate_dl_info);
17210 +EXPORT_SYMBOL_GPL(rcu_free_dl_info);
17211 +
17212 diff -NurpP --minimal linux-4.9.76/kernel/vserver/helper.c linux-4.9.76-vs2.3.9.5/kernel/vserver/helper.c
17213 --- linux-4.9.76/kernel/vserver/helper.c        1970-01-01 00:00:00.000000000 +0000
17214 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/helper.c      2018-01-10 02:50:49.000000000 +0000
17215 @@ -0,0 +1,242 @@
17216 +/*
17217 + *  linux/kernel/vserver/helper.c
17218 + *
17219 + *  Virtual Context Support
17220 + *
17221 + *  Copyright (C) 2004-2007  Herbert P?tzl
17222 + *
17223 + *  V0.01  basic helper
17224 + *
17225 + */
17226 +
17227 +#include <linux/kmod.h>
17228 +#include <linux/reboot.h>
17229 +#include <linux/vs_context.h>
17230 +#include <linux/vs_network.h>
17231 +#include <linux/vserver/signal.h>
17232 +
17233 +
17234 +char vshelper_path[255] = "/sbin/vshelper";
17235 +
17236 +static int vshelper_init(struct subprocess_info *info, struct cred *new_cred)
17237 +{
17238 +       current->flags &= ~PF_NO_SETAFFINITY;
17239 +       return 0;
17240 +}
17241 +
17242 +static int vs_call_usermodehelper(char *path, char **argv, char **envp, int wait)
17243 +{
17244 +       struct subprocess_info *info;
17245 +       gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
17246 +
17247 +       info = call_usermodehelper_setup(path, argv, envp, gfp_mask,
17248 +                                        vshelper_init, NULL, NULL);
17249 +       if (info == NULL)
17250 +               return -ENOMEM;
17251 +
17252 +       return call_usermodehelper_exec(info, wait);
17253 +}
17254 +
17255 +static int do_vshelper(char *name, char *argv[], char *envp[], int sync)
17256 +{
17257 +       int ret;
17258 +
17259 +       if ((ret = vs_call_usermodehelper(name, argv, envp,
17260 +               sync ? UMH_WAIT_PROC : UMH_WAIT_EXEC))) {
17261 +               printk(KERN_WARNING "%s: (%s %s) returned %s with %d\n",
17262 +                       name, argv[1], argv[2],
17263 +                       sync ? "sync" : "async", ret);
17264 +       }
17265 +       vxdprintk(VXD_CBIT(switch, 4),
17266 +               "%s: (%s %s) returned %s with %d",
17267 +               name, argv[1], argv[2], sync ? "sync" : "async", ret);
17268 +       return ret;
17269 +}
17270 +
17271 +/*
17272 + *      vshelper path is set via /proc/sys
17273 + *      invoked by vserver sys_reboot(), with
17274 + *      the following arguments
17275 + *
17276 + *      argv [0] = vshelper_path;
17277 + *      argv [1] = action: "restart", "halt", "poweroff", ...
17278 + *      argv [2] = context identifier
17279 + *
17280 + *      envp [*] = type-specific parameters
17281 + */
17282 +
17283 +long vs_reboot_helper(struct vx_info *vxi, int cmd, void __user *arg)
17284 +{
17285 +       char id_buf[8], cmd_buf[16];
17286 +       char uid_buf[16], pid_buf[16];
17287 +       int ret;
17288 +
17289 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17290 +       char *envp[] = {"HOME=/", "TERM=linux",
17291 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
17292 +                       uid_buf, pid_buf, cmd_buf, 0};
17293 +
17294 +       if (vx_info_state(vxi, VXS_HELPER))
17295 +               return -EAGAIN;
17296 +       vxi->vx_state |= VXS_HELPER;
17297 +
17298 +       snprintf(id_buf, sizeof(id_buf), "%d", vxi->vx_id);
17299 +
17300 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17301 +       snprintf(uid_buf, sizeof(uid_buf), "VS_UID=%d",
17302 +               from_kuid(&init_user_ns, current_uid()));
17303 +       snprintf(pid_buf, sizeof(pid_buf), "VS_PID=%d", current->pid);
17304 +
17305 +       switch (cmd) {
17306 +       case LINUX_REBOOT_CMD_RESTART:
17307 +               argv[1] = "restart";
17308 +               break;
17309 +
17310 +       case LINUX_REBOOT_CMD_HALT:
17311 +               argv[1] = "halt";
17312 +               break;
17313 +
17314 +       case LINUX_REBOOT_CMD_POWER_OFF:
17315 +               argv[1] = "poweroff";
17316 +               break;
17317 +
17318 +       case LINUX_REBOOT_CMD_SW_SUSPEND:
17319 +               argv[1] = "swsusp";
17320 +               break;
17321 +
17322 +       case LINUX_REBOOT_CMD_OOM:
17323 +               argv[1] = "oom";
17324 +               break;
17325 +
17326 +       default:
17327 +               vxi->vx_state &= ~VXS_HELPER;
17328 +               return 0;
17329 +       }
17330 +
17331 +       ret = do_vshelper(vshelper_path, argv, envp, 0);
17332 +       vxi->vx_state &= ~VXS_HELPER;
17333 +       __wakeup_vx_info(vxi);
17334 +       return (ret) ? -EPERM : 0;
17335 +}
17336 +
17337 +
17338 +long vs_reboot(unsigned int cmd, void __user *arg)
17339 +{
17340 +       struct vx_info *vxi = current_vx_info();
17341 +       long ret = 0;
17342 +
17343 +       vxdprintk(VXD_CBIT(misc, 5),
17344 +               "vs_reboot(%p[#%d],%u)",
17345 +               vxi, vxi ? vxi->vx_id : 0, cmd);
17346 +
17347 +       ret = vs_reboot_helper(vxi, cmd, arg);
17348 +       if (ret)
17349 +               return ret;
17350 +
17351 +       vxi->reboot_cmd = cmd;
17352 +       if (vx_info_flags(vxi, VXF_REBOOT_KILL, 0)) {
17353 +               switch (cmd) {
17354 +               case LINUX_REBOOT_CMD_RESTART:
17355 +               case LINUX_REBOOT_CMD_HALT:
17356 +               case LINUX_REBOOT_CMD_POWER_OFF:
17357 +                       vx_info_kill(vxi, 0, SIGKILL);
17358 +                       vx_info_kill(vxi, 1, SIGKILL);
17359 +               default:
17360 +                       break;
17361 +               }
17362 +       }
17363 +       return 0;
17364 +}
17365 +
17366 +long vs_oom_action(unsigned int cmd)
17367 +{
17368 +       struct vx_info *vxi = current_vx_info();
17369 +       long ret = 0;
17370 +
17371 +       vxdprintk(VXD_CBIT(misc, 5),
17372 +               "vs_oom_action(%p[#%d],%u)",
17373 +               vxi, vxi ? vxi->vx_id : 0, cmd);
17374 +
17375 +       ret = vs_reboot_helper(vxi, cmd, NULL);
17376 +       if (ret)
17377 +               return ret;
17378 +
17379 +       vxi->reboot_cmd = cmd;
17380 +       if (vx_info_flags(vxi, VXF_REBOOT_KILL, 0)) {
17381 +               vx_info_kill(vxi, 0, SIGKILL);
17382 +               vx_info_kill(vxi, 1, SIGKILL);
17383 +       }
17384 +       return 0;
17385 +}
17386 +
17387 +/*
17388 + *      argv [0] = vshelper_path;
17389 + *      argv [1] = action: "startup", "shutdown"
17390 + *      argv [2] = context identifier
17391 + *
17392 + *      envp [*] = type-specific parameters
17393 + */
17394 +
17395 +long vs_state_change(struct vx_info *vxi, unsigned int cmd)
17396 +{
17397 +       char id_buf[8], cmd_buf[16];
17398 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17399 +       char *envp[] = {"HOME=/", "TERM=linux",
17400 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
17401 +
17402 +       if (!vx_info_flags(vxi, VXF_SC_HELPER, 0))
17403 +               return 0;
17404 +
17405 +       snprintf(id_buf, sizeof(id_buf), "%d", vxi->vx_id);
17406 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17407 +
17408 +       switch (cmd) {
17409 +       case VSC_STARTUP:
17410 +               argv[1] = "startup";
17411 +               break;
17412 +       case VSC_SHUTDOWN:
17413 +               argv[1] = "shutdown";
17414 +               break;
17415 +       default:
17416 +               return 0;
17417 +       }
17418 +
17419 +       return do_vshelper(vshelper_path, argv, envp, 1);
17420 +}
17421 +
17422 +
17423 +/*
17424 + *      argv [0] = vshelper_path;
17425 + *      argv [1] = action: "netup", "netdown"
17426 + *      argv [2] = context identifier
17427 + *
17428 + *      envp [*] = type-specific parameters
17429 + */
17430 +
17431 +long vs_net_change(struct nx_info *nxi, unsigned int cmd)
17432 +{
17433 +       char id_buf[8], cmd_buf[16];
17434 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17435 +       char *envp[] = {"HOME=/", "TERM=linux",
17436 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
17437 +
17438 +       if (!nx_info_flags(nxi, NXF_SC_HELPER, 0))
17439 +               return 0;
17440 +
17441 +       snprintf(id_buf, sizeof(id_buf), "%d", nxi->nx_id);
17442 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17443 +
17444 +       switch (cmd) {
17445 +       case VSC_NETUP:
17446 +               argv[1] = "netup";
17447 +               break;
17448 +       case VSC_NETDOWN:
17449 +               argv[1] = "netdown";
17450 +               break;
17451 +       default:
17452 +               return 0;
17453 +       }
17454 +
17455 +       return do_vshelper(vshelper_path, argv, envp, 1);
17456 +}
17457 +
17458 diff -NurpP --minimal linux-4.9.76/kernel/vserver/history.c linux-4.9.76-vs2.3.9.5/kernel/vserver/history.c
17459 --- linux-4.9.76/kernel/vserver/history.c       1970-01-01 00:00:00.000000000 +0000
17460 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/history.c     2018-01-10 02:50:49.000000000 +0000
17461 @@ -0,0 +1,258 @@
17462 +/*
17463 + *  kernel/vserver/history.c
17464 + *
17465 + *  Virtual Context History Backtrace
17466 + *
17467 + *  Copyright (C) 2004-2007  Herbert P?tzl
17468 + *
17469 + *  V0.01  basic structure
17470 + *  V0.02  hash/unhash and trace
17471 + *  V0.03  preemption fixes
17472 + *
17473 + */
17474 +
17475 +#include <linux/module.h>
17476 +#include <asm/uaccess.h>
17477 +
17478 +#include <linux/vserver/context.h>
17479 +#include <linux/vserver/debug.h>
17480 +#include <linux/vserver/debug_cmd.h>
17481 +#include <linux/vserver/history.h>
17482 +
17483 +
17484 +#ifdef CONFIG_VSERVER_HISTORY
17485 +#define VXH_SIZE       CONFIG_VSERVER_HISTORY_SIZE
17486 +#else
17487 +#define VXH_SIZE       64
17488 +#endif
17489 +
17490 +struct _vx_history {
17491 +       unsigned int counter;
17492 +
17493 +       struct _vx_hist_entry entry[VXH_SIZE + 1];
17494 +};
17495 +
17496 +
17497 +DEFINE_PER_CPU(struct _vx_history, vx_history_buffer);
17498 +
17499 +unsigned volatile int vxh_active = 1;
17500 +
17501 +static atomic_t sequence = ATOMIC_INIT(0);
17502 +
17503 +
17504 +/*     vxh_advance()
17505 +
17506 +       * requires disabled preemption                          */
17507 +
17508 +struct _vx_hist_entry *vxh_advance(void *loc)
17509 +{
17510 +       unsigned int cpu = smp_processor_id();
17511 +       struct _vx_history *hist = &per_cpu(vx_history_buffer, cpu);
17512 +       struct _vx_hist_entry *entry;
17513 +       unsigned int index;
17514 +
17515 +       index = vxh_active ? (hist->counter++ % VXH_SIZE) : VXH_SIZE;
17516 +       entry = &hist->entry[index];
17517 +
17518 +       entry->seq = atomic_inc_return(&sequence);
17519 +       entry->loc = loc;
17520 +       return entry;
17521 +}
17522 +
17523 +EXPORT_SYMBOL_GPL(vxh_advance);
17524 +
17525 +
17526 +#define VXH_LOC_FMTS   "(#%04x,*%d):%p"
17527 +
17528 +#define VXH_LOC_ARGS(e)        (e)->seq, cpu, (e)->loc
17529 +
17530 +
17531 +#define VXH_VXI_FMTS   "%p[#%d,%d.%d]"
17532 +
17533 +#define VXH_VXI_ARGS(e)        (e)->vxi.ptr,                           \
17534 +                       (e)->vxi.ptr ? (e)->vxi.xid : 0,        \
17535 +                       (e)->vxi.ptr ? (e)->vxi.usecnt : 0,     \
17536 +                       (e)->vxi.ptr ? (e)->vxi.tasks : 0
17537 +
17538 +void   vxh_dump_entry(struct _vx_hist_entry *e, unsigned cpu)
17539 +{
17540 +       switch (e->type) {
17541 +       case VXH_THROW_OOPS:
17542 +               printk( VXH_LOC_FMTS " oops \n", VXH_LOC_ARGS(e));
17543 +               break;
17544 +
17545 +       case VXH_GET_VX_INFO:
17546 +       case VXH_PUT_VX_INFO:
17547 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS "\n",
17548 +                       VXH_LOC_ARGS(e),
17549 +                       (e->type == VXH_GET_VX_INFO) ? "get" : "put",
17550 +                       VXH_VXI_ARGS(e));
17551 +               break;
17552 +
17553 +       case VXH_INIT_VX_INFO:
17554 +       case VXH_SET_VX_INFO:
17555 +       case VXH_CLR_VX_INFO:
17556 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS " @%p\n",
17557 +                       VXH_LOC_ARGS(e),
17558 +                       (e->type == VXH_INIT_VX_INFO) ? "init" :
17559 +                       ((e->type == VXH_SET_VX_INFO) ? "set" : "clr"),
17560 +                       VXH_VXI_ARGS(e), e->sc.data);
17561 +               break;
17562 +
17563 +       case VXH_CLAIM_VX_INFO:
17564 +       case VXH_RELEASE_VX_INFO:
17565 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS " @%p\n",
17566 +                       VXH_LOC_ARGS(e),
17567 +                       (e->type == VXH_CLAIM_VX_INFO) ? "claim" : "release",
17568 +                       VXH_VXI_ARGS(e), e->sc.data);
17569 +               break;
17570 +
17571 +       case VXH_ALLOC_VX_INFO:
17572 +       case VXH_DEALLOC_VX_INFO:
17573 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS "\n",
17574 +                       VXH_LOC_ARGS(e),
17575 +                       (e->type == VXH_ALLOC_VX_INFO) ? "alloc" : "dealloc",
17576 +                       VXH_VXI_ARGS(e));
17577 +               break;
17578 +
17579 +       case VXH_HASH_VX_INFO:
17580 +       case VXH_UNHASH_VX_INFO:
17581 +               printk( VXH_LOC_FMTS " __%s_vx_info " VXH_VXI_FMTS "\n",
17582 +                       VXH_LOC_ARGS(e),
17583 +                       (e->type == VXH_HASH_VX_INFO) ? "hash" : "unhash",
17584 +                       VXH_VXI_ARGS(e));
17585 +               break;
17586 +
17587 +       case VXH_LOC_VX_INFO:
17588 +       case VXH_LOOKUP_VX_INFO:
17589 +       case VXH_CREATE_VX_INFO:
17590 +               printk( VXH_LOC_FMTS " __%s_vx_info [#%d] -> " VXH_VXI_FMTS "\n",
17591 +                       VXH_LOC_ARGS(e),
17592 +                       (e->type == VXH_CREATE_VX_INFO) ? "create" :
17593 +                       ((e->type == VXH_LOC_VX_INFO) ? "loc" : "lookup"),
17594 +                       e->ll.arg, VXH_VXI_ARGS(e));
17595 +               break;
17596 +       }
17597 +}
17598 +
17599 +static void __vxh_dump_history(void)
17600 +{
17601 +       unsigned int i, cpu;
17602 +
17603 +       printk("History:\tSEQ: %8x\tNR_CPUS: %d\n",
17604 +               atomic_read(&sequence), NR_CPUS);
17605 +
17606 +       for (i = 0; i < VXH_SIZE; i++) {
17607 +               for_each_online_cpu(cpu) {
17608 +                       struct _vx_history *hist =
17609 +                               &per_cpu(vx_history_buffer, cpu);
17610 +                       unsigned int index = (hist->counter - i) % VXH_SIZE;
17611 +                       struct _vx_hist_entry *entry = &hist->entry[index];
17612 +
17613 +                       vxh_dump_entry(entry, cpu);
17614 +               }
17615 +       }
17616 +}
17617 +
17618 +void   vxh_dump_history(void)
17619 +{
17620 +       vxh_active = 0;
17621 +#ifdef CONFIG_SMP
17622 +       local_irq_enable();
17623 +       smp_send_stop();
17624 +       local_irq_disable();
17625 +#endif
17626 +       __vxh_dump_history();
17627 +}
17628 +
17629 +
17630 +/* vserver syscall commands below here */
17631 +
17632 +
17633 +int vc_dump_history(uint32_t id)
17634 +{
17635 +       vxh_active = 0;
17636 +       __vxh_dump_history();
17637 +       vxh_active = 1;
17638 +
17639 +       return 0;
17640 +}
17641 +
17642 +
17643 +int do_read_history(struct __user _vx_hist_entry *data,
17644 +       int cpu, uint32_t *index, uint32_t *count)
17645 +{
17646 +       int pos, ret = 0;
17647 +       struct _vx_history *hist = &per_cpu(vx_history_buffer, cpu);
17648 +       int end = hist->counter;
17649 +       int start = end - VXH_SIZE + 2;
17650 +       int idx = *index;
17651 +
17652 +       /* special case: get current pos */
17653 +       if (!*count) {
17654 +               *index = end;
17655 +               return 0;
17656 +       }
17657 +
17658 +       /* have we lost some data? */
17659 +       if (idx < start)
17660 +               idx = start;
17661 +
17662 +       for (pos = 0; (pos < *count) && (idx < end); pos++, idx++) {
17663 +               struct _vx_hist_entry *entry =
17664 +                       &hist->entry[idx % VXH_SIZE];
17665 +
17666 +               /* send entry to userspace */
17667 +               ret = copy_to_user(&data[pos], entry, sizeof(*entry));
17668 +               if (ret)
17669 +                       break;
17670 +       }
17671 +       /* save new index and count */
17672 +       *index = idx;
17673 +       *count = pos;
17674 +       return ret ? ret : (*index < end);
17675 +}
17676 +
17677 +int vc_read_history(uint32_t id, void __user *data)
17678 +{
17679 +       struct vcmd_read_history_v0 vc_data;
17680 +       int ret;
17681 +
17682 +       if (id >= NR_CPUS)
17683 +               return -EINVAL;
17684 +
17685 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17686 +               return -EFAULT;
17687 +
17688 +       ret = do_read_history((struct __user _vx_hist_entry *)vc_data.data,
17689 +               id, &vc_data.index, &vc_data.count);
17690 +
17691 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17692 +               return -EFAULT;
17693 +       return ret;
17694 +}
17695 +
17696 +#ifdef CONFIG_COMPAT
17697 +
17698 +int vc_read_history_x32(uint32_t id, void __user *data)
17699 +{
17700 +       struct vcmd_read_history_v0_x32 vc_data;
17701 +       int ret;
17702 +
17703 +       if (id >= NR_CPUS)
17704 +               return -EINVAL;
17705 +
17706 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17707 +               return -EFAULT;
17708 +
17709 +       ret = do_read_history((struct __user _vx_hist_entry *)
17710 +               compat_ptr(vc_data.data_ptr),
17711 +               id, &vc_data.index, &vc_data.count);
17712 +
17713 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17714 +               return -EFAULT;
17715 +       return ret;
17716 +}
17717 +
17718 +#endif /* CONFIG_COMPAT */
17719 +
17720 diff -NurpP --minimal linux-4.9.76/kernel/vserver/inet.c linux-4.9.76-vs2.3.9.5/kernel/vserver/inet.c
17721 --- linux-4.9.76/kernel/vserver/inet.c  1970-01-01 00:00:00.000000000 +0000
17722 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/inet.c        2018-01-10 02:50:49.000000000 +0000
17723 @@ -0,0 +1,236 @@
17724 +
17725 +#include <linux/in.h>
17726 +#include <linux/inetdevice.h>
17727 +#include <linux/export.h>
17728 +#include <linux/vs_inet.h>
17729 +#include <linux/vs_inet6.h>
17730 +#include <linux/vserver/debug.h>
17731 +#include <net/route.h>
17732 +#include <net/addrconf.h>
17733 +
17734 +
17735 +int nx_v4_addr_conflict(struct nx_info *nxi1, struct nx_info *nxi2)
17736 +{
17737 +       int ret = 0;
17738 +
17739 +       if (!nxi1 || !nxi2 || nxi1 == nxi2)
17740 +               ret = 1;
17741 +       else {
17742 +               struct nx_addr_v4 *ptr;
17743 +               unsigned long irqflags;
17744 +
17745 +               spin_lock_irqsave(&nxi1->addr_lock, irqflags);
17746 +               for (ptr = &nxi1->v4; ptr; ptr = ptr->next) {
17747 +                       if (v4_nx_addr_in_nx_info(nxi2, ptr, -1)) {
17748 +                               ret = 1;
17749 +                               break;
17750 +                       }
17751 +               }
17752 +               spin_unlock_irqrestore(&nxi1->addr_lock, irqflags);
17753 +       }
17754 +
17755 +       vxdprintk(VXD_CBIT(net, 2),
17756 +               "nx_v4_addr_conflict(%p,%p): %d",
17757 +               nxi1, nxi2, ret);
17758 +
17759 +       return ret;
17760 +}
17761 +
17762 +
17763 +#ifdef CONFIG_IPV6
17764 +
17765 +int nx_v6_addr_conflict(struct nx_info *nxi1, struct nx_info *nxi2)
17766 +{
17767 +       int ret = 0;
17768 +
17769 +       if (!nxi1 || !nxi2 || nxi1 == nxi2)
17770 +               ret = 1;
17771 +       else {
17772 +               struct nx_addr_v6 *ptr;
17773 +               unsigned long irqflags;
17774 +
17775 +               spin_lock_irqsave(&nxi1->addr_lock, irqflags);
17776 +               for (ptr = &nxi1->v6; ptr; ptr = ptr->next) {
17777 +                       if (v6_nx_addr_in_nx_info(nxi2, ptr, -1)) {
17778 +                               ret = 1;
17779 +                               break;
17780 +                       }
17781 +               }
17782 +               spin_unlock_irqrestore(&nxi1->addr_lock, irqflags);
17783 +       }
17784 +
17785 +       vxdprintk(VXD_CBIT(net, 2),
17786 +               "nx_v6_addr_conflict(%p,%p): %d",
17787 +               nxi1, nxi2, ret);
17788 +
17789 +       return ret;
17790 +}
17791 +
17792 +#endif
17793 +
17794 +int v4_dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17795 +{
17796 +       struct in_device *in_dev;
17797 +       struct in_ifaddr **ifap;
17798 +       struct in_ifaddr *ifa;
17799 +       int ret = 0;
17800 +
17801 +       if (!dev)
17802 +               goto out;
17803 +       in_dev = in_dev_get(dev);
17804 +       if (!in_dev)
17805 +               goto out;
17806 +
17807 +       for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
17808 +               ifap = &ifa->ifa_next) {
17809 +               if (v4_addr_in_nx_info(nxi, ifa->ifa_local, NXA_MASK_SHOW)) {
17810 +                       ret = 1;
17811 +                       break;
17812 +               }
17813 +       }
17814 +       in_dev_put(in_dev);
17815 +out:
17816 +       return ret;
17817 +}
17818 +
17819 +
17820 +#ifdef CONFIG_IPV6
17821 +
17822 +int v6_dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17823 +{
17824 +       struct inet6_dev *in_dev;
17825 +       struct inet6_ifaddr *ifa;
17826 +       int ret = 0;
17827 +
17828 +       if (!dev)
17829 +               goto out;
17830 +       in_dev = in6_dev_get(dev);
17831 +       if (!in_dev)
17832 +               goto out;
17833 +
17834 +       // for (ifap = &in_dev->addr_list; (ifa = *ifap) != NULL;
17835 +       list_for_each_entry(ifa, &in_dev->addr_list, if_list) {
17836 +               if (v6_addr_in_nx_info(nxi, &ifa->addr, -1)) {
17837 +                       ret = 1;
17838 +                       break;
17839 +               }
17840 +       }
17841 +       in6_dev_put(in_dev);
17842 +out:
17843 +       return ret;
17844 +}
17845 +
17846 +#endif
17847 +
17848 +int dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17849 +{
17850 +       int ret = 1;
17851 +
17852 +       if (!nxi)
17853 +               goto out;
17854 +       if (nxi->v4.type && v4_dev_in_nx_info(dev, nxi))
17855 +               goto out;
17856 +#ifdef CONFIG_IPV6
17857 +       ret = 2;
17858 +       if (nxi->v6.type && v6_dev_in_nx_info(dev, nxi))
17859 +               goto out;
17860 +#endif
17861 +       ret = 0;
17862 +out:
17863 +       vxdprintk(VXD_CBIT(net, 3),
17864 +               "dev_in_nx_info(%p,%p[#%d]) = %d",
17865 +               dev, nxi, nxi ? nxi->nx_id : 0, ret);
17866 +       return ret;
17867 +}
17868 +
17869 +struct rtable *ip_v4_find_src(struct net *net, struct nx_info *nxi,
17870 +       struct flowi4 *fl4)
17871 +{
17872 +       struct rtable *rt;
17873 +
17874 +       if (!nxi)
17875 +               return NULL;
17876 +
17877 +       /* FIXME: handle lback only case */
17878 +       if (!NX_IPV4(nxi))
17879 +               return ERR_PTR(-EPERM);
17880 +
17881 +       vxdprintk(VXD_CBIT(net, 4),
17882 +               "ip_v4_find_src(%p[#%u]) " NIPQUAD_FMT " -> " NIPQUAD_FMT,
17883 +               nxi, nxi ? nxi->nx_id : 0,
17884 +               NIPQUAD(fl4->saddr), NIPQUAD(fl4->daddr));
17885 +
17886 +       /* single IP is unconditional */
17887 +       if (nx_info_flags(nxi, NXF_SINGLE_IP, 0) &&
17888 +               (fl4->saddr == INADDR_ANY))
17889 +               fl4->saddr = nxi->v4.ip[0].s_addr;
17890 +
17891 +       if (fl4->saddr == INADDR_ANY) {
17892 +               struct nx_addr_v4 *ptr;
17893 +               __be32 found = 0;
17894 +
17895 +               rt = __ip_route_output_key(net, fl4);
17896 +               if (!IS_ERR(rt)) {
17897 +                       found = fl4->saddr;
17898 +                       ip_rt_put(rt);
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(found));
17902 +                       if (v4_addr_in_nx_info(nxi, found, NXA_MASK_BIND))
17903 +                               goto found;
17904 +               }
17905 +
17906 +               WARN_ON_ONCE(in_irq());
17907 +               spin_lock_bh(&nxi->addr_lock);
17908 +               for (ptr = &nxi->v4; ptr; ptr = ptr->next) {
17909 +                       __be32 primary = ptr->ip[0].s_addr;
17910 +                       __be32 mask = ptr->mask.s_addr;
17911 +                       __be32 neta = primary & mask;
17912 +
17913 +                       vxdprintk(VXD_CBIT(net, 4), "ip_v4_find_src(%p[#%u]) chk: "
17914 +                               NIPQUAD_FMT "/" NIPQUAD_FMT "/" NIPQUAD_FMT,
17915 +                               nxi, nxi ? nxi->nx_id : 0, NIPQUAD(primary),
17916 +                               NIPQUAD(mask), NIPQUAD(neta));
17917 +                       if ((found & mask) != neta)
17918 +                               continue;
17919 +
17920 +                       fl4->saddr = primary;
17921 +                       rt = __ip_route_output_key(net, fl4);
17922 +                       vxdprintk(VXD_CBIT(net, 4),
17923 +                               "ip_v4_find_src(%p[#%u]) rok[%u]: " NIPQUAD_FMT,
17924 +                               nxi, nxi ? nxi->nx_id : 0, fl4->flowi4_oif, NIPQUAD(primary));
17925 +                       if (!IS_ERR(rt)) {
17926 +                               found = fl4->saddr;
17927 +                               ip_rt_put(rt);
17928 +                               if (found == primary)
17929 +                                       goto found_unlock;
17930 +                       }
17931 +               }
17932 +               /* still no source ip? */
17933 +               found = ipv4_is_loopback(fl4->daddr)
17934 +                       ? IPI_LOOPBACK : nxi->v4.ip[0].s_addr;
17935 +       found_unlock:
17936 +               spin_unlock_bh(&nxi->addr_lock);
17937 +       found:
17938 +               /* assign src ip to flow */
17939 +               fl4->saddr = found;
17940 +
17941 +       } else {
17942 +               if (!v4_addr_in_nx_info(nxi, fl4->saddr, NXA_MASK_BIND))
17943 +                       return ERR_PTR(-EPERM);
17944 +       }
17945 +
17946 +       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0)) {
17947 +               if (ipv4_is_loopback(fl4->daddr))
17948 +                       fl4->daddr = nxi->v4_lback.s_addr;
17949 +               if (ipv4_is_loopback(fl4->saddr))
17950 +                       fl4->saddr = nxi->v4_lback.s_addr;
17951 +       } else if (ipv4_is_loopback(fl4->daddr) &&
17952 +               !nx_info_flags(nxi, NXF_LBACK_ALLOW, 0))
17953 +               return ERR_PTR(-EPERM);
17954 +
17955 +       return NULL;
17956 +}
17957 +
17958 +EXPORT_SYMBOL_GPL(ip_v4_find_src);
17959 +
17960 diff -NurpP --minimal linux-4.9.76/kernel/vserver/init.c linux-4.9.76-vs2.3.9.5/kernel/vserver/init.c
17961 --- linux-4.9.76/kernel/vserver/init.c  1970-01-01 00:00:00.000000000 +0000
17962 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/init.c        2018-01-10 02:50:49.000000000 +0000
17963 @@ -0,0 +1,46 @@
17964 +/*
17965 + *  linux/kernel/init.c
17966 + *
17967 + *  Virtual Server Init
17968 + *
17969 + *  Copyright (C) 2004-2007  Herbert P?tzl
17970 + *
17971 + *  V0.01  basic structure
17972 + *
17973 + */
17974 +
17975 +#include <linux/init.h>
17976 +#include <linux/module.h>
17977 +
17978 +int    vserver_register_sysctl(void);
17979 +void   vserver_unregister_sysctl(void);
17980 +
17981 +
17982 +static int __init init_vserver(void)
17983 +{
17984 +       int ret = 0;
17985 +
17986 +#ifdef CONFIG_VSERVER_DEBUG
17987 +       vserver_register_sysctl();
17988 +#endif
17989 +       return ret;
17990 +}
17991 +
17992 +
17993 +static void __exit exit_vserver(void)
17994 +{
17995 +
17996 +#ifdef CONFIG_VSERVER_DEBUG
17997 +       vserver_unregister_sysctl();
17998 +#endif
17999 +       return;
18000 +}
18001 +
18002 +/* FIXME: GFP_ZONETYPES gone
18003 +long vx_slab[GFP_ZONETYPES]; */
18004 +long vx_area;
18005 +
18006 +
18007 +module_init(init_vserver);
18008 +module_exit(exit_vserver);
18009 +
18010 diff -NurpP --minimal linux-4.9.76/kernel/vserver/inode.c linux-4.9.76-vs2.3.9.5/kernel/vserver/inode.c
18011 --- linux-4.9.76/kernel/vserver/inode.c 1970-01-01 00:00:00.000000000 +0000
18012 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/inode.c       2018-01-13 03:26:08.000000000 +0000
18013 @@ -0,0 +1,440 @@
18014 +/*
18015 + *  linux/kernel/vserver/inode.c
18016 + *
18017 + *  Virtual Server: File System Support
18018 + *
18019 + *  Copyright (C) 2004-2007  Herbert P?tzl
18020 + *
18021 + *  V0.01  separated from vcontext V0.05
18022 + *  V0.02  moved to tag (instead of xid)
18023 + *
18024 + */
18025 +
18026 +#include <linux/tty.h>
18027 +#include <linux/proc_fs.h>
18028 +#include <linux/devpts_fs.h>
18029 +#include <linux/fs.h>
18030 +#include <linux/file.h>
18031 +#include <linux/mount.h>
18032 +#include <linux/parser.h>
18033 +#include <linux/namei.h>
18034 +#include <linux/magic.h>
18035 +#include <linux/slab.h>
18036 +#include <linux/vserver/inode.h>
18037 +#include <linux/vserver/inode_cmd.h>
18038 +#include <linux/vs_base.h>
18039 +#include <linux/vs_tag.h>
18040 +
18041 +#include <asm/uaccess.h>
18042 +#include <../../fs/proc/internal.h>
18043 +
18044 +
18045 +static int __vc_get_iattr(struct inode *in, uint32_t *tag, uint32_t *flags, uint32_t *mask)
18046 +{
18047 +       struct proc_dir_entry *entry;
18048 +
18049 +       if (!in || !in->i_sb)
18050 +               return -ESRCH;
18051 +
18052 +       *flags = IATTR_TAG
18053 +               | (IS_IMMUTABLE(in) ? IATTR_IMMUTABLE : 0)
18054 +               | (IS_IXUNLINK(in) ? IATTR_IXUNLINK : 0)
18055 +               | (IS_BARRIER(in) ? IATTR_BARRIER : 0)
18056 +               | (IS_COW(in) ? IATTR_COW : 0);
18057 +       *mask = IATTR_IXUNLINK | IATTR_IMMUTABLE | IATTR_COW;
18058 +
18059 +       if (S_ISDIR(in->i_mode))
18060 +               *mask |= IATTR_BARRIER;
18061 +
18062 +       if (IS_TAGGED(in)) {
18063 +               *tag = i_tag_read(in);
18064 +               *mask |= IATTR_TAG;
18065 +       }
18066 +
18067 +       switch (in->i_sb->s_magic) {
18068 +       case PROC_SUPER_MAGIC:
18069 +               entry = PROC_I(in)->pde;
18070 +
18071 +               /* check for specific inodes? */
18072 +               if (entry)
18073 +                       *mask |= IATTR_FLAGS;
18074 +               if (entry)
18075 +                       *flags |= (entry->vx_flags & IATTR_FLAGS);
18076 +               else
18077 +                       *flags |= (PROC_I(in)->vx_flags & IATTR_FLAGS);
18078 +               break;
18079 +
18080 +       case DEVPTS_SUPER_MAGIC:
18081 +               *tag = i_tag_read(in);
18082 +               *mask |= IATTR_TAG;
18083 +               break;
18084 +
18085 +       default:
18086 +               break;
18087 +       }
18088 +       return 0;
18089 +}
18090 +
18091 +int vc_get_iattr(void __user *data)
18092 +{
18093 +       struct path path;
18094 +       struct vcmd_ctx_iattr_v1 vc_data = { .tag = -1 };
18095 +       int ret;
18096 +
18097 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18098 +               return -EFAULT;
18099 +
18100 +       ret = user_lpath(vc_data.name, &path);
18101 +       if (!ret) {
18102 +               ret = __vc_get_iattr(path.dentry->d_inode,
18103 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18104 +               path_put(&path);
18105 +       }
18106 +       if (ret)
18107 +               return ret;
18108 +
18109 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18110 +               ret = -EFAULT;
18111 +       return ret;
18112 +}
18113 +
18114 +#ifdef CONFIG_COMPAT
18115 +
18116 +int vc_get_iattr_x32(void __user *data)
18117 +{
18118 +       struct path path;
18119 +       struct vcmd_ctx_iattr_v1_x32 vc_data = { .tag = -1 };
18120 +       int ret;
18121 +
18122 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18123 +               return -EFAULT;
18124 +
18125 +       ret = user_lpath(compat_ptr(vc_data.name_ptr), &path);
18126 +       if (!ret) {
18127 +               ret = __vc_get_iattr(path.dentry->d_inode,
18128 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18129 +               path_put(&path);
18130 +       }
18131 +       if (ret)
18132 +               return ret;
18133 +
18134 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18135 +               ret = -EFAULT;
18136 +       return ret;
18137 +}
18138 +
18139 +#endif /* CONFIG_COMPAT */
18140 +
18141 +
18142 +int vc_fget_iattr(uint32_t fd, void __user *data)
18143 +{
18144 +       struct file *filp;
18145 +       struct vcmd_ctx_fiattr_v0 vc_data = { .tag = -1 };
18146 +       int ret;
18147 +
18148 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18149 +               return -EFAULT;
18150 +
18151 +       filp = fget(fd);
18152 +       if (!filp || !filp->f_path.dentry || !filp->f_path.dentry->d_inode)
18153 +               return -EBADF;
18154 +
18155 +       ret = __vc_get_iattr(filp->f_path.dentry->d_inode,
18156 +               &vc_data.tag, &vc_data.flags, &vc_data.mask);
18157 +
18158 +       fput(filp);
18159 +
18160 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18161 +               ret = -EFAULT;
18162 +       return ret;
18163 +}
18164 +
18165 +
18166 +static int __vc_set_iattr(struct dentry *de, uint32_t *tag, uint32_t *flags, uint32_t *mask)
18167 +{
18168 +       struct inode *in = de->d_inode;
18169 +       int error = 0, is_proc = 0, has_tag = 0;
18170 +       struct iattr attr = { 0 };
18171 +
18172 +       if (!in || !in->i_sb)
18173 +               return -ESRCH;
18174 +
18175 +       is_proc = (in->i_sb->s_magic == PROC_SUPER_MAGIC);
18176 +       if ((*mask & IATTR_FLAGS) && !is_proc)
18177 +               return -EINVAL;
18178 +
18179 +       has_tag = IS_TAGGED(in) ||
18180 +               (in->i_sb->s_magic == DEVPTS_SUPER_MAGIC);
18181 +       if ((*mask & IATTR_TAG) && !has_tag)
18182 +               return -EINVAL;
18183 +
18184 +       inode_lock(in);
18185 +       if (*mask & IATTR_TAG) {
18186 +               attr.ia_tag = make_ktag(&init_user_ns, *tag);
18187 +               attr.ia_valid |= ATTR_TAG;
18188 +       }
18189 +
18190 +       if (*mask & IATTR_FLAGS) {
18191 +               struct proc_dir_entry *entry = PROC_I(in)->pde;
18192 +               unsigned int iflags = PROC_I(in)->vx_flags;
18193 +
18194 +               iflags = (iflags & ~(*mask & IATTR_FLAGS))
18195 +                       | (*flags & IATTR_FLAGS);
18196 +               PROC_I(in)->vx_flags = iflags;
18197 +               if (entry)
18198 +                       entry->vx_flags = iflags;
18199 +       }
18200 +
18201 +       if (*mask & (IATTR_IMMUTABLE | IATTR_IXUNLINK |
18202 +               IATTR_BARRIER | IATTR_COW)) {
18203 +               int iflags = in->i_flags;
18204 +               int vflags = in->i_vflags;
18205 +
18206 +               if (*mask & IATTR_IMMUTABLE) {
18207 +                       if (*flags & IATTR_IMMUTABLE)
18208 +                               iflags |= S_IMMUTABLE;
18209 +                       else
18210 +                               iflags &= ~S_IMMUTABLE;
18211 +               }
18212 +               if (*mask & IATTR_IXUNLINK) {
18213 +                       if (*flags & IATTR_IXUNLINK)
18214 +                               iflags |= S_IXUNLINK;
18215 +                       else
18216 +                               iflags &= ~S_IXUNLINK;
18217 +               }
18218 +               if (S_ISDIR(in->i_mode) && (*mask & IATTR_BARRIER)) {
18219 +                       if (*flags & IATTR_BARRIER)
18220 +                               vflags |= V_BARRIER;
18221 +                       else
18222 +                               vflags &= ~V_BARRIER;
18223 +               }
18224 +               if (S_ISREG(in->i_mode) && (*mask & IATTR_COW)) {
18225 +                       if (*flags & IATTR_COW)
18226 +                               vflags |= V_COW;
18227 +                       else
18228 +                               vflags &= ~V_COW;
18229 +               }
18230 +               if (in->i_op && in->i_op->sync_flags) {
18231 +                       error = in->i_op->sync_flags(in, iflags, vflags);
18232 +                       if (error)
18233 +                               goto out;
18234 +               }
18235 +       }
18236 +
18237 +       if (attr.ia_valid) {
18238 +               if (in->i_op && in->i_op->setattr)
18239 +                       error = in->i_op->setattr(de, &attr);
18240 +               else {
18241 +                       error = setattr_prepare(de, &attr);
18242 +                       if (!error) {
18243 +                               setattr_copy(in, &attr);
18244 +                               mark_inode_dirty(in);
18245 +                       }
18246 +               }
18247 +       }
18248 +
18249 +out:
18250 +       inode_unlock(in);
18251 +       return error;
18252 +}
18253 +
18254 +int vc_set_iattr(void __user *data)
18255 +{
18256 +       struct path path;
18257 +       struct vcmd_ctx_iattr_v1 vc_data;
18258 +       int ret;
18259 +
18260 +       if (!capable(CAP_LINUX_IMMUTABLE))
18261 +               return -EPERM;
18262 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18263 +               return -EFAULT;
18264 +
18265 +       ret = user_lpath(vc_data.name, &path);
18266 +       if (!ret) {
18267 +               ret = __vc_set_iattr(path.dentry,
18268 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18269 +               path_put(&path);
18270 +       }
18271 +
18272 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18273 +               ret = -EFAULT;
18274 +       return ret;
18275 +}
18276 +
18277 +#ifdef CONFIG_COMPAT
18278 +
18279 +int vc_set_iattr_x32(void __user *data)
18280 +{
18281 +       struct path path;
18282 +       struct vcmd_ctx_iattr_v1_x32 vc_data;
18283 +       int ret;
18284 +
18285 +       if (!capable(CAP_LINUX_IMMUTABLE))
18286 +               return -EPERM;
18287 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18288 +               return -EFAULT;
18289 +
18290 +       ret = user_lpath(compat_ptr(vc_data.name_ptr), &path);
18291 +       if (!ret) {
18292 +               ret = __vc_set_iattr(path.dentry,
18293 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18294 +               path_put(&path);
18295 +       }
18296 +
18297 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18298 +               ret = -EFAULT;
18299 +       return ret;
18300 +}
18301 +
18302 +#endif /* CONFIG_COMPAT */
18303 +
18304 +int vc_fset_iattr(uint32_t fd, void __user *data)
18305 +{
18306 +       struct file *filp;
18307 +       struct vcmd_ctx_fiattr_v0 vc_data;
18308 +       int ret;
18309 +
18310 +       if (!capable(CAP_LINUX_IMMUTABLE))
18311 +               return -EPERM;
18312 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18313 +               return -EFAULT;
18314 +
18315 +       filp = fget(fd);
18316 +       if (!filp || !filp->f_path.dentry || !filp->f_path.dentry->d_inode)
18317 +               return -EBADF;
18318 +
18319 +       ret = __vc_set_iattr(filp->f_path.dentry, &vc_data.tag,
18320 +               &vc_data.flags, &vc_data.mask);
18321 +
18322 +       fput(filp);
18323 +
18324 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18325 +               return -EFAULT;
18326 +       return ret;
18327 +}
18328 +
18329 +
18330 +enum { Opt_notagcheck, Opt_tag, Opt_notag, Opt_tagid, Opt_err };
18331 +
18332 +static match_table_t tokens = {
18333 +       {Opt_notagcheck, "notagcheck"},
18334 +#ifdef CONFIG_PROPAGATE
18335 +       {Opt_notag, "notag"},
18336 +       {Opt_tag, "tag"},
18337 +       {Opt_tagid, "tagid=%u"},
18338 +#endif
18339 +       {Opt_err, NULL}
18340 +};
18341 +
18342 +
18343 +static void __dx_parse_remove(char *string, char *opt)
18344 +{
18345 +       char *p = strstr(string, opt);
18346 +       char *q = p;
18347 +
18348 +       if (p) {
18349 +               while (*q != '\0' && *q != ',')
18350 +                       q++;
18351 +               while (*q)
18352 +                       *p++ = *q++;
18353 +               while (*p)
18354 +                       *p++ = '\0';
18355 +       }
18356 +}
18357 +
18358 +int dx_parse_tag(char *string, vtag_t *tag, int remove, int *mnt_flags,
18359 +                unsigned long *flags)
18360 +{
18361 +       int set = 0;
18362 +       substring_t args[MAX_OPT_ARGS];
18363 +       int token;
18364 +       char *s, *p, *opts;
18365 +#if defined(CONFIG_PROPAGATE) || defined(CONFIG_VSERVER_DEBUG)
18366 +       int option = 0;
18367 +#endif
18368 +
18369 +       if (!string)
18370 +               return 0;
18371 +       s = kstrdup(string, GFP_KERNEL | GFP_ATOMIC);
18372 +       if (!s)
18373 +               return 0;
18374 +
18375 +       opts = s;
18376 +       while ((p = strsep(&opts, ",")) != NULL) {
18377 +               token = match_token(p, tokens, args);
18378 +
18379 +               switch (token) {
18380 +#ifdef CONFIG_PROPAGATE
18381 +               case Opt_tag:
18382 +                       if (tag)
18383 +                               *tag = 0;
18384 +                       if (remove)
18385 +                               __dx_parse_remove(s, "tag");
18386 +                       *mnt_flags |= MNT_TAGID;
18387 +                       set |= MNT_TAGID;
18388 +                       break;
18389 +               case Opt_notag:
18390 +                       if (remove)
18391 +                               __dx_parse_remove(s, "notag");
18392 +                       *mnt_flags |= MNT_NOTAG;
18393 +                       set |= MNT_NOTAG;
18394 +                       break;
18395 +               case Opt_tagid:
18396 +                       if (tag && !match_int(args, &option))
18397 +                               *tag = option;
18398 +                       if (remove)
18399 +                               __dx_parse_remove(s, "tagid");
18400 +                       *mnt_flags |= MNT_TAGID;
18401 +                       set |= MNT_TAGID;
18402 +                       break;
18403 +#endif /* CONFIG_PROPAGATE */
18404 +               case Opt_notagcheck:
18405 +                       if (remove)
18406 +                               __dx_parse_remove(s, "notagcheck");
18407 +                       *flags |= MS_NOTAGCHECK;
18408 +                       set |= MS_NOTAGCHECK;
18409 +                       break;
18410 +               }
18411 +               vxdprintk(VXD_CBIT(tag, 7),
18412 +                       "dx_parse_tag(" VS_Q("%s") "): %d:#%d",
18413 +                       p, token, option);
18414 +       }
18415 +       if (set)
18416 +               strcpy(string, s);
18417 +       kfree(s);
18418 +       return set;
18419 +}
18420 +
18421 +#ifdef CONFIG_PROPAGATE
18422 +
18423 +void __dx_propagate_tag(struct nameidata *nd, struct inode *inode)
18424 +{
18425 +       vtag_t new_tag = 0;
18426 +       struct vfsmount *mnt;
18427 +       int propagate;
18428 +
18429 +       if (!nd)
18430 +               return;
18431 +       mnt = nd->path.mnt;
18432 +       if (!mnt)
18433 +               return;
18434 +
18435 +       propagate = (mnt->mnt_flags & MNT_TAGID);
18436 +       if (propagate)
18437 +               new_tag = mnt->mnt_tag;
18438 +
18439 +       vxdprintk(VXD_CBIT(tag, 7),
18440 +               "dx_propagate_tag(%p[#%lu.%d]): %d,%d",
18441 +               inode, inode->i_ino, inode->i_tag,
18442 +               new_tag, (propagate) ? 1 : 0);
18443 +
18444 +       if (propagate)
18445 +               i_tag_write(inode, new_tag);
18446 +}
18447 +
18448 +#include <linux/module.h>
18449 +
18450 +EXPORT_SYMBOL_GPL(__dx_propagate_tag);
18451 +
18452 +#endif /* CONFIG_PROPAGATE */
18453 +
18454 diff -NurpP --minimal linux-4.9.76/kernel/vserver/limit.c linux-4.9.76-vs2.3.9.5/kernel/vserver/limit.c
18455 --- linux-4.9.76/kernel/vserver/limit.c 1970-01-01 00:00:00.000000000 +0000
18456 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/limit.c       2018-01-10 02:50:49.000000000 +0000
18457 @@ -0,0 +1,343 @@
18458 +/*
18459 + *  linux/kernel/vserver/limit.c
18460 + *
18461 + *  Virtual Server: Context Limits
18462 + *
18463 + *  Copyright (C) 2004-2010  Herbert P?tzl
18464 + *
18465 + *  V0.01  broken out from vcontext V0.05
18466 + *  V0.02  changed vcmds to vxi arg
18467 + *  V0.03  added memory cgroup support
18468 + *
18469 + */
18470 +
18471 +#include <linux/sched.h>
18472 +#include <linux/module.h>
18473 +#include <linux/memcontrol.h>
18474 +#include <linux/page_counter.h>
18475 +#include <linux/vs_limit.h>
18476 +#include <linux/vserver/limit.h>
18477 +#include <linux/vserver/limit_cmd.h>
18478 +
18479 +#include <asm/uaccess.h>
18480 +
18481 +
18482 +const char *vlimit_name[NUM_LIMITS] = {
18483 +       [RLIMIT_CPU]            = "CPU",
18484 +       [RLIMIT_NPROC]          = "NPROC",
18485 +       [RLIMIT_NOFILE]         = "NOFILE",
18486 +       [RLIMIT_LOCKS]          = "LOCKS",
18487 +       [RLIMIT_SIGPENDING]     = "SIGP",
18488 +       [RLIMIT_MSGQUEUE]       = "MSGQ",
18489 +
18490 +       [VLIMIT_NSOCK]          = "NSOCK",
18491 +       [VLIMIT_OPENFD]         = "OPENFD",
18492 +       [VLIMIT_SHMEM]          = "SHMEM",
18493 +       [VLIMIT_DENTRY]         = "DENTRY",
18494 +};
18495 +
18496 +EXPORT_SYMBOL_GPL(vlimit_name);
18497 +
18498 +#define MASK_ENTRY(x)  (1 << (x))
18499 +
18500 +const struct vcmd_ctx_rlimit_mask_v0 vlimit_mask = {
18501 +               /* minimum */
18502 +       0
18503 +       ,       /* softlimit */
18504 +       0
18505 +       ,       /* maximum */
18506 +       MASK_ENTRY( RLIMIT_NPROC        ) |
18507 +       MASK_ENTRY( RLIMIT_NOFILE       ) |
18508 +       MASK_ENTRY( RLIMIT_LOCKS        ) |
18509 +       MASK_ENTRY( RLIMIT_MSGQUEUE     ) |
18510 +
18511 +       MASK_ENTRY( VLIMIT_NSOCK        ) |
18512 +       MASK_ENTRY( VLIMIT_OPENFD       ) |
18513 +       MASK_ENTRY( VLIMIT_SHMEM        ) |
18514 +       MASK_ENTRY( VLIMIT_DENTRY       ) |
18515 +       0
18516 +};
18517 +               /* accounting only */
18518 +uint32_t account_mask =
18519 +       MASK_ENTRY( VLIMIT_SEMARY       ) |
18520 +       MASK_ENTRY( VLIMIT_NSEMS        ) |
18521 +       MASK_ENTRY( VLIMIT_MAPPED       ) |
18522 +       0;
18523 +
18524 +
18525 +static int is_valid_vlimit(int id)
18526 +{
18527 +       uint32_t mask = vlimit_mask.minimum |
18528 +               vlimit_mask.softlimit | vlimit_mask.maximum;
18529 +       return mask & (1 << id);
18530 +}
18531 +
18532 +static int is_accounted_vlimit(int id)
18533 +{
18534 +       if (is_valid_vlimit(id))
18535 +               return 1;
18536 +       return account_mask & (1 << id);
18537 +}
18538 +
18539 +
18540 +static inline uint64_t vc_get_soft(struct vx_info *vxi, int id)
18541 +{
18542 +       rlim_t limit = __rlim_soft(&vxi->limit, id);
18543 +       return VX_VLIM(limit);
18544 +}
18545 +
18546 +static inline uint64_t vc_get_hard(struct vx_info *vxi, int id)
18547 +{
18548 +       rlim_t limit = __rlim_hard(&vxi->limit, id);
18549 +       return VX_VLIM(limit);
18550 +}
18551 +
18552 +static int do_get_rlimit(struct vx_info *vxi, uint32_t id,
18553 +       uint64_t *minimum, uint64_t *softlimit, uint64_t *maximum)
18554 +{
18555 +       if (!is_valid_vlimit(id))
18556 +               return -EINVAL;
18557 +
18558 +       if (minimum)
18559 +               *minimum = CRLIM_UNSET;
18560 +       if (softlimit)
18561 +               *softlimit = vc_get_soft(vxi, id);
18562 +       if (maximum)
18563 +               *maximum = vc_get_hard(vxi, id);
18564 +       return 0;
18565 +}
18566 +
18567 +int vc_get_rlimit(struct vx_info *vxi, void __user *data)
18568 +{
18569 +       struct vcmd_ctx_rlimit_v0 vc_data;
18570 +       int ret;
18571 +
18572 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18573 +               return -EFAULT;
18574 +
18575 +       ret = do_get_rlimit(vxi, vc_data.id,
18576 +               &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
18577 +       if (ret)
18578 +               return ret;
18579 +
18580 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18581 +               return -EFAULT;
18582 +       return 0;
18583 +}
18584 +
18585 +static int do_set_rlimit(struct vx_info *vxi, uint32_t id,
18586 +       uint64_t minimum, uint64_t softlimit, uint64_t maximum)
18587 +{
18588 +       if (!is_valid_vlimit(id))
18589 +               return -EINVAL;
18590 +
18591 +       if (maximum != CRLIM_KEEP)
18592 +               __rlim_hard(&vxi->limit, id) = VX_RLIM(maximum);
18593 +       if (softlimit != CRLIM_KEEP)
18594 +               __rlim_soft(&vxi->limit, id) = VX_RLIM(softlimit);
18595 +
18596 +       /* clamp soft limit */
18597 +       if (__rlim_soft(&vxi->limit, id) > __rlim_hard(&vxi->limit, id))
18598 +               __rlim_soft(&vxi->limit, id) = __rlim_hard(&vxi->limit, id);
18599 +
18600 +       return 0;
18601 +}
18602 +
18603 +int vc_set_rlimit(struct vx_info *vxi, void __user *data)
18604 +{
18605 +       struct vcmd_ctx_rlimit_v0 vc_data;
18606 +
18607 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18608 +               return -EFAULT;
18609 +
18610 +       return do_set_rlimit(vxi, vc_data.id,
18611 +               vc_data.minimum, vc_data.softlimit, vc_data.maximum);
18612 +}
18613 +
18614 +#ifdef CONFIG_IA32_EMULATION
18615 +
18616 +int vc_set_rlimit_x32(struct vx_info *vxi, void __user *data)
18617 +{
18618 +       struct vcmd_ctx_rlimit_v0_x32 vc_data;
18619 +
18620 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18621 +               return -EFAULT;
18622 +
18623 +       return do_set_rlimit(vxi, vc_data.id,
18624 +               vc_data.minimum, vc_data.softlimit, vc_data.maximum);
18625 +}
18626 +
18627 +int vc_get_rlimit_x32(struct vx_info *vxi, void __user *data)
18628 +{
18629 +       struct vcmd_ctx_rlimit_v0_x32 vc_data;
18630 +       int ret;
18631 +
18632 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18633 +               return -EFAULT;
18634 +
18635 +       ret = do_get_rlimit(vxi, vc_data.id,
18636 +               &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
18637 +       if (ret)
18638 +               return ret;
18639 +
18640 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18641 +               return -EFAULT;
18642 +       return 0;
18643 +}
18644 +
18645 +#endif /* CONFIG_IA32_EMULATION */
18646 +
18647 +
18648 +int vc_get_rlimit_mask(uint32_t id, void __user *data)
18649 +{
18650 +       if (copy_to_user(data, &vlimit_mask, sizeof(vlimit_mask)))
18651 +               return -EFAULT;
18652 +       return 0;
18653 +}
18654 +
18655 +
18656 +static inline void vx_reset_hits(struct _vx_limit *limit)
18657 +{
18658 +       int lim;
18659 +
18660 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18661 +               atomic_set(&__rlim_lhit(limit, lim), 0);
18662 +       }
18663 +}
18664 +
18665 +int vc_reset_hits(struct vx_info *vxi, void __user *data)
18666 +{
18667 +       vx_reset_hits(&vxi->limit);
18668 +       return 0;
18669 +}
18670 +
18671 +static inline void vx_reset_minmax(struct _vx_limit *limit)
18672 +{
18673 +       rlim_t value;
18674 +       int lim;
18675 +
18676 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18677 +               value = __rlim_get(limit, lim);
18678 +               __rlim_rmax(limit, lim) = value;
18679 +               __rlim_rmin(limit, lim) = value;
18680 +       }
18681 +}
18682 +
18683 +int vc_reset_minmax(struct vx_info *vxi, void __user *data)
18684 +{
18685 +       vx_reset_minmax(&vxi->limit);
18686 +       return 0;
18687 +}
18688 +
18689 +
18690 +int vc_rlimit_stat(struct vx_info *vxi, void __user *data)
18691 +{
18692 +       struct vcmd_rlimit_stat_v0 vc_data;
18693 +       struct _vx_limit *limit = &vxi->limit;
18694 +       int id;
18695 +
18696 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18697 +               return -EFAULT;
18698 +
18699 +       id = vc_data.id;
18700 +       if (!is_accounted_vlimit(id))
18701 +               return -EINVAL;
18702 +
18703 +       vx_limit_fixup(limit, id);
18704 +       vc_data.hits = atomic_read(&__rlim_lhit(limit, id));
18705 +       vc_data.value = __rlim_get(limit, id);
18706 +       vc_data.minimum = __rlim_rmin(limit, id);
18707 +       vc_data.maximum = __rlim_rmax(limit, id);
18708 +
18709 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18710 +               return -EFAULT;
18711 +       return 0;
18712 +}
18713 +
18714 +
18715 +#ifdef CONFIG_MEMCG
18716 +void vx_vsi_meminfo(struct sysinfo *val)
18717 +{
18718 +       struct mem_cgroup *mcg;
18719 +       u64 res_limit, res_usage;
18720 +
18721 +       rcu_read_lock();
18722 +       mcg = mem_cgroup_from_task(current);
18723 +       rcu_read_unlock();
18724 +       if (!mcg)
18725 +               goto out;
18726 +
18727 +       res_limit = mem_cgroup_mem_limit_pages(mcg);
18728 +       res_usage = mem_cgroup_mem_usage_pages(mcg);
18729 +
18730 +       if (res_limit != PAGE_COUNTER_MAX)
18731 +               val->totalram = res_limit;
18732 +       val->freeram = val->totalram - res_usage;
18733 +       val->bufferram = 0;
18734 +       val->totalhigh = 0;
18735 +       val->freehigh = 0;
18736 +out:
18737 +       return;
18738 +}
18739 +
18740 +void vx_vsi_swapinfo(struct sysinfo *val)
18741 +{
18742 +#ifdef CONFIG_MEMCG_SWAP
18743 +       struct mem_cgroup *mcg;
18744 +       u64 res_limit, res_usage, memsw_limit, memsw_usage;
18745 +       s64 swap_limit, swap_usage;
18746 +
18747 +       rcu_read_lock();
18748 +       mcg = mem_cgroup_from_task(current);
18749 +       rcu_read_unlock();
18750 +       if (!mcg)
18751 +               goto out;
18752 +
18753 +       res_limit = mem_cgroup_mem_limit_pages(mcg);
18754 +       res_usage = mem_cgroup_mem_usage_pages(mcg);
18755 +       memsw_limit = mem_cgroup_memsw_limit_pages(mcg);
18756 +       memsw_usage = mem_cgroup_memsw_usage_pages(mcg);
18757 +
18758 +       /* memory unlimited */
18759 +       if (res_limit == PAGE_COUNTER_MAX)
18760 +               goto out;
18761 +
18762 +       swap_limit = memsw_limit - res_limit;
18763 +       /* we have a swap limit? */
18764 +       if (memsw_limit != PAGE_COUNTER_MAX)
18765 +               val->totalswap = swap_limit;
18766 +
18767 +       /* calculate swap part */
18768 +       swap_usage = (memsw_usage > res_usage) ?
18769 +               memsw_usage - res_usage : 0;
18770 +
18771 +       /* total shown minus usage gives free swap */
18772 +       val->freeswap = (swap_usage < swap_limit) ?
18773 +               val->totalswap - swap_usage : 0;
18774 +out:
18775 +#else  /* !CONFIG_MEMCG_SWAP */
18776 +       val->totalswap = 0;
18777 +       val->freeswap = 0;
18778 +#endif /* !CONFIG_MEMCG_SWAP */
18779 +       return;
18780 +}
18781 +
18782 +long vx_vsi_cached(struct sysinfo *val)
18783 +{
18784 +       long cache = 0;
18785 +#ifdef CONFIG_MEMCG_BROKEN
18786 +       struct mem_cgroup *mcg;
18787 +
18788 +       rcu_read_lock();
18789 +       mcg = mem_cgroup_from_task(current);
18790 +       rcu_read_unlock();
18791 +       if (!mcg)
18792 +               goto out;
18793 +
18794 +       // cache = mem_cgroup_stat_read_cache(mcg);
18795 +out:
18796 +#endif
18797 +       return cache;
18798 +}
18799 +#endif /* !CONFIG_MEMCG */
18800 +
18801 diff -NurpP --minimal linux-4.9.76/kernel/vserver/limit_init.h linux-4.9.76-vs2.3.9.5/kernel/vserver/limit_init.h
18802 --- linux-4.9.76/kernel/vserver/limit_init.h    1970-01-01 00:00:00.000000000 +0000
18803 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/limit_init.h  2018-01-10 02:50:49.000000000 +0000
18804 @@ -0,0 +1,31 @@
18805 +
18806 +
18807 +static inline void vx_info_init_limit(struct _vx_limit *limit)
18808 +{
18809 +       int lim;
18810 +
18811 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18812 +               __rlim_soft(limit, lim) = RLIM_INFINITY;
18813 +               __rlim_hard(limit, lim) = RLIM_INFINITY;
18814 +               __rlim_set(limit, lim, 0);
18815 +               atomic_set(&__rlim_lhit(limit, lim), 0);
18816 +               __rlim_rmin(limit, lim) = 0;
18817 +               __rlim_rmax(limit, lim) = 0;
18818 +       }
18819 +}
18820 +
18821 +static inline void vx_info_exit_limit(struct _vx_limit *limit)
18822 +{
18823 +       rlim_t value;
18824 +       int lim;
18825 +
18826 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18827 +               if ((1 << lim) & VLIM_NOCHECK)
18828 +                       continue;
18829 +               value = __rlim_get(limit, lim);
18830 +               vxwprintk_xid(value,
18831 +                       "!!! limit: %p[%s,%d] = %ld on exit.",
18832 +                       limit, vlimit_name[lim], lim, (long)value);
18833 +       }
18834 +}
18835 +
18836 diff -NurpP --minimal linux-4.9.76/kernel/vserver/limit_proc.h linux-4.9.76-vs2.3.9.5/kernel/vserver/limit_proc.h
18837 --- linux-4.9.76/kernel/vserver/limit_proc.h    1970-01-01 00:00:00.000000000 +0000
18838 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/limit_proc.h  2018-01-10 02:50:49.000000000 +0000
18839 @@ -0,0 +1,57 @@
18840 +#ifndef _VX_LIMIT_PROC_H
18841 +#define _VX_LIMIT_PROC_H
18842 +
18843 +#include <linux/vserver/limit_int.h>
18844 +
18845 +
18846 +#define VX_LIMIT_FMT   ":\t%8ld\t%8ld/%8ld\t%8lld/%8lld\t%6d\n"
18847 +#define VX_LIMIT_TOP   \
18848 +       "Limit\t current\t     min/max\t\t    soft/hard\t\thits\n"
18849 +
18850 +#define VX_LIMIT_ARG(r)                                \
18851 +       (unsigned long)__rlim_get(limit, r),    \
18852 +       (unsigned long)__rlim_rmin(limit, r),   \
18853 +       (unsigned long)__rlim_rmax(limit, r),   \
18854 +       VX_VLIM(__rlim_soft(limit, r)),         \
18855 +       VX_VLIM(__rlim_hard(limit, r)),         \
18856 +       atomic_read(&__rlim_lhit(limit, r))
18857 +
18858 +static inline int vx_info_proc_limit(struct _vx_limit *limit, char *buffer)
18859 +{
18860 +       vx_limit_fixup(limit, -1);
18861 +       return sprintf(buffer, VX_LIMIT_TOP
18862 +               "PROC"  VX_LIMIT_FMT
18863 +               "VM"    VX_LIMIT_FMT
18864 +               "VML"   VX_LIMIT_FMT
18865 +               "RSS"   VX_LIMIT_FMT
18866 +               "ANON"  VX_LIMIT_FMT
18867 +               "RMAP"  VX_LIMIT_FMT
18868 +               "FILES" VX_LIMIT_FMT
18869 +               "OFD"   VX_LIMIT_FMT
18870 +               "LOCKS" VX_LIMIT_FMT
18871 +               "SOCK"  VX_LIMIT_FMT
18872 +               "MSGQ"  VX_LIMIT_FMT
18873 +               "SHM"   VX_LIMIT_FMT
18874 +               "SEMA"  VX_LIMIT_FMT
18875 +               "SEMS"  VX_LIMIT_FMT
18876 +               "DENT"  VX_LIMIT_FMT,
18877 +               VX_LIMIT_ARG(RLIMIT_NPROC),
18878 +               VX_LIMIT_ARG(RLIMIT_AS),
18879 +               VX_LIMIT_ARG(RLIMIT_MEMLOCK),
18880 +               VX_LIMIT_ARG(RLIMIT_RSS),
18881 +               VX_LIMIT_ARG(VLIMIT_ANON),
18882 +               VX_LIMIT_ARG(VLIMIT_MAPPED),
18883 +               VX_LIMIT_ARG(RLIMIT_NOFILE),
18884 +               VX_LIMIT_ARG(VLIMIT_OPENFD),
18885 +               VX_LIMIT_ARG(RLIMIT_LOCKS),
18886 +               VX_LIMIT_ARG(VLIMIT_NSOCK),
18887 +               VX_LIMIT_ARG(RLIMIT_MSGQUEUE),
18888 +               VX_LIMIT_ARG(VLIMIT_SHMEM),
18889 +               VX_LIMIT_ARG(VLIMIT_SEMARY),
18890 +               VX_LIMIT_ARG(VLIMIT_NSEMS),
18891 +               VX_LIMIT_ARG(VLIMIT_DENTRY));
18892 +}
18893 +
18894 +#endif /* _VX_LIMIT_PROC_H */
18895 +
18896 +
18897 diff -NurpP --minimal linux-4.9.76/kernel/vserver/network.c linux-4.9.76-vs2.3.9.5/kernel/vserver/network.c
18898 --- linux-4.9.76/kernel/vserver/network.c       1970-01-01 00:00:00.000000000 +0000
18899 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/network.c     2018-01-10 02:50:49.000000000 +0000
18900 @@ -0,0 +1,1053 @@
18901 +/*
18902 + *  linux/kernel/vserver/network.c
18903 + *
18904 + *  Virtual Server: Network Support
18905 + *
18906 + *  Copyright (C) 2003-2007  Herbert P?tzl
18907 + *
18908 + *  V0.01  broken out from vcontext V0.05
18909 + *  V0.02  cleaned up implementation
18910 + *  V0.03  added equiv nx commands
18911 + *  V0.04  switch to RCU based hash
18912 + *  V0.05  and back to locking again
18913 + *  V0.06  changed vcmds to nxi arg
18914 + *  V0.07  have __create claim() the nxi
18915 + *
18916 + */
18917 +
18918 +#include <linux/err.h>
18919 +#include <linux/slab.h>
18920 +#include <linux/rcupdate.h>
18921 +#include <net/ipv6.h>
18922 +
18923 +#include <linux/vs_network.h>
18924 +#include <linux/vs_pid.h>
18925 +#include <linux/vserver/network_cmd.h>
18926 +
18927 +
18928 +atomic_t nx_global_ctotal      = ATOMIC_INIT(0);
18929 +atomic_t nx_global_cactive     = ATOMIC_INIT(0);
18930 +
18931 +static struct kmem_cache *nx_addr_v4_cachep = NULL;
18932 +static struct kmem_cache *nx_addr_v6_cachep = NULL;
18933 +
18934 +
18935 +static int __init init_network(void)
18936 +{
18937 +       nx_addr_v4_cachep = kmem_cache_create("nx_v4_addr_cache",
18938 +               sizeof(struct nx_addr_v4), 0,
18939 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
18940 +       nx_addr_v6_cachep = kmem_cache_create("nx_v6_addr_cache",
18941 +               sizeof(struct nx_addr_v6), 0,
18942 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
18943 +       return 0;
18944 +}
18945 +
18946 +
18947 +/*     __alloc_nx_addr_v4()                                    */
18948 +
18949 +static inline struct nx_addr_v4 *__alloc_nx_addr_v4(void)
18950 +{
18951 +       struct nx_addr_v4 *nxa = kmem_cache_alloc(
18952 +               nx_addr_v4_cachep, GFP_KERNEL);
18953 +
18954 +       if (!IS_ERR(nxa))
18955 +               memset(nxa, 0, sizeof(*nxa));
18956 +       return nxa;
18957 +}
18958 +
18959 +/*     __dealloc_nx_addr_v4()                                  */
18960 +
18961 +static inline void __dealloc_nx_addr_v4(struct nx_addr_v4 *nxa)
18962 +{
18963 +       kmem_cache_free(nx_addr_v4_cachep, nxa);
18964 +}
18965 +
18966 +/*     __dealloc_nx_addr_v4_all()                              */
18967 +
18968 +static inline void __dealloc_nx_addr_v4_all(struct nx_addr_v4 *nxa)
18969 +{
18970 +       while (nxa) {
18971 +               struct nx_addr_v4 *next = nxa->next;
18972 +
18973 +               __dealloc_nx_addr_v4(nxa);
18974 +               nxa = next;
18975 +       }
18976 +}
18977 +
18978 +
18979 +#ifdef CONFIG_IPV6
18980 +
18981 +/*     __alloc_nx_addr_v6()                                    */
18982 +
18983 +static inline struct nx_addr_v6 *__alloc_nx_addr_v6(void)
18984 +{
18985 +       struct nx_addr_v6 *nxa = kmem_cache_alloc(
18986 +               nx_addr_v6_cachep, GFP_KERNEL);
18987 +
18988 +       if (!IS_ERR(nxa))
18989 +               memset(nxa, 0, sizeof(*nxa));
18990 +       return nxa;
18991 +}
18992 +
18993 +/*     __dealloc_nx_addr_v6()                                  */
18994 +
18995 +static inline void __dealloc_nx_addr_v6(struct nx_addr_v6 *nxa)
18996 +{
18997 +       kmem_cache_free(nx_addr_v6_cachep, nxa);
18998 +}
18999 +
19000 +/*     __dealloc_nx_addr_v6_all()                              */
19001 +
19002 +static inline void __dealloc_nx_addr_v6_all(struct nx_addr_v6 *nxa)
19003 +{
19004 +       while (nxa) {
19005 +               struct nx_addr_v6 *next = nxa->next;
19006 +
19007 +               __dealloc_nx_addr_v6(nxa);
19008 +               nxa = next;
19009 +       }
19010 +}
19011 +
19012 +#endif /* CONFIG_IPV6 */
19013 +
19014 +/*     __alloc_nx_info()
19015 +
19016 +       * allocate an initialized nx_info struct
19017 +       * doesn't make it visible (hash)                        */
19018 +
19019 +static struct nx_info *__alloc_nx_info(vnid_t nid)
19020 +{
19021 +       struct nx_info *new = NULL;
19022 +
19023 +       vxdprintk(VXD_CBIT(nid, 1), "alloc_nx_info(%d)*", nid);
19024 +
19025 +       /* would this benefit from a slab cache? */
19026 +       new = kmalloc(sizeof(struct nx_info), GFP_KERNEL);
19027 +       if (!new)
19028 +               return 0;
19029 +
19030 +       memset(new, 0, sizeof(struct nx_info));
19031 +       new->nx_id = nid;
19032 +       INIT_HLIST_NODE(&new->nx_hlist);
19033 +       atomic_set(&new->nx_usecnt, 0);
19034 +       atomic_set(&new->nx_tasks, 0);
19035 +       spin_lock_init(&new->addr_lock);
19036 +       new->nx_state = 0;
19037 +
19038 +       new->nx_flags = NXF_INIT_SET;
19039 +
19040 +       /* rest of init goes here */
19041 +
19042 +       new->v4_lback.s_addr = htonl(INADDR_LOOPBACK);
19043 +       new->v4_bcast.s_addr = htonl(INADDR_BROADCAST);
19044 +
19045 +       vxdprintk(VXD_CBIT(nid, 0),
19046 +               "alloc_nx_info(%d) = %p", nid, new);
19047 +       atomic_inc(&nx_global_ctotal);
19048 +       return new;
19049 +}
19050 +
19051 +/*     __dealloc_nx_info()
19052 +
19053 +       * final disposal of nx_info                             */
19054 +
19055 +static void __dealloc_nx_info(struct nx_info *nxi)
19056 +{
19057 +       vxdprintk(VXD_CBIT(nid, 0),
19058 +               "dealloc_nx_info(%p)", nxi);
19059 +
19060 +       nxi->nx_hlist.next = LIST_POISON1;
19061 +       nxi->nx_id = -1;
19062 +
19063 +       BUG_ON(atomic_read(&nxi->nx_usecnt));
19064 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19065 +
19066 +       __dealloc_nx_addr_v4_all(nxi->v4.next);
19067 +#ifdef CONFIG_IPV6
19068 +       __dealloc_nx_addr_v6_all(nxi->v6.next);
19069 +#endif
19070 +
19071 +       nxi->nx_state |= NXS_RELEASED;
19072 +       kfree(nxi);
19073 +       atomic_dec(&nx_global_ctotal);
19074 +}
19075 +
19076 +static void __shutdown_nx_info(struct nx_info *nxi)
19077 +{
19078 +       nxi->nx_state |= NXS_SHUTDOWN;
19079 +       vs_net_change(nxi, VSC_NETDOWN);
19080 +}
19081 +
19082 +/*     exported stuff                                          */
19083 +
19084 +void free_nx_info(struct nx_info *nxi)
19085 +{
19086 +       /* context shutdown is mandatory */
19087 +       BUG_ON(nxi->nx_state != NXS_SHUTDOWN);
19088 +
19089 +       /* context must not be hashed */
19090 +       BUG_ON(nxi->nx_state & NXS_HASHED);
19091 +
19092 +       BUG_ON(atomic_read(&nxi->nx_usecnt));
19093 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19094 +
19095 +       __dealloc_nx_info(nxi);
19096 +}
19097 +
19098 +
19099 +void __nx_set_lback(struct nx_info *nxi)
19100 +{
19101 +       int nid = nxi->nx_id;
19102 +       __be32 lback = htonl(INADDR_LOOPBACK ^ ((nid & 0xFFFF) << 8));
19103 +
19104 +       nxi->v4_lback.s_addr = lback;
19105 +}
19106 +
19107 +extern int __nx_inet_add_lback(__be32 addr);
19108 +extern int __nx_inet_del_lback(__be32 addr);
19109 +
19110 +
19111 +/*     hash table for nx_info hash */
19112 +
19113 +#define NX_HASH_SIZE   13
19114 +
19115 +struct hlist_head nx_info_hash[NX_HASH_SIZE];
19116 +
19117 +static DEFINE_SPINLOCK(nx_info_hash_lock);
19118 +
19119 +
19120 +static inline unsigned int __hashval(vnid_t nid)
19121 +{
19122 +       return (nid % NX_HASH_SIZE);
19123 +}
19124 +
19125 +
19126 +
19127 +/*     __hash_nx_info()
19128 +
19129 +       * add the nxi to the global hash table
19130 +       * requires the hash_lock to be held                     */
19131 +
19132 +static inline void __hash_nx_info(struct nx_info *nxi)
19133 +{
19134 +       struct hlist_head *head;
19135 +
19136 +       vxd_assert_lock(&nx_info_hash_lock);
19137 +       vxdprintk(VXD_CBIT(nid, 4),
19138 +               "__hash_nx_info: %p[#%d]", nxi, nxi->nx_id);
19139 +
19140 +       /* context must not be hashed */
19141 +       BUG_ON(nx_info_state(nxi, NXS_HASHED));
19142 +
19143 +       nxi->nx_state |= NXS_HASHED;
19144 +       head = &nx_info_hash[__hashval(nxi->nx_id)];
19145 +       hlist_add_head(&nxi->nx_hlist, head);
19146 +       atomic_inc(&nx_global_cactive);
19147 +}
19148 +
19149 +/*     __unhash_nx_info()
19150 +
19151 +       * remove the nxi from the global hash table
19152 +       * requires the hash_lock to be held                     */
19153 +
19154 +static inline void __unhash_nx_info(struct nx_info *nxi)
19155 +{
19156 +       vxd_assert_lock(&nx_info_hash_lock);
19157 +       vxdprintk(VXD_CBIT(nid, 4),
19158 +               "__unhash_nx_info: %p[#%d.%d.%d]", nxi, nxi->nx_id,
19159 +               atomic_read(&nxi->nx_usecnt), atomic_read(&nxi->nx_tasks));
19160 +
19161 +       /* context must be hashed */
19162 +       BUG_ON(!nx_info_state(nxi, NXS_HASHED));
19163 +       /* but without tasks */
19164 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19165 +
19166 +       nxi->nx_state &= ~NXS_HASHED;
19167 +       hlist_del(&nxi->nx_hlist);
19168 +       atomic_dec(&nx_global_cactive);
19169 +}
19170 +
19171 +
19172 +/*     __lookup_nx_info()
19173 +
19174 +       * requires the hash_lock to be held
19175 +       * doesn't increment the nx_refcnt                       */
19176 +
19177 +static inline struct nx_info *__lookup_nx_info(vnid_t nid)
19178 +{
19179 +       struct hlist_head *head = &nx_info_hash[__hashval(nid)];
19180 +       struct hlist_node *pos;
19181 +       struct nx_info *nxi;
19182 +
19183 +       vxd_assert_lock(&nx_info_hash_lock);
19184 +       hlist_for_each(pos, head) {
19185 +               nxi = hlist_entry(pos, struct nx_info, nx_hlist);
19186 +
19187 +               if (nxi->nx_id == nid)
19188 +                       goto found;
19189 +       }
19190 +       nxi = NULL;
19191 +found:
19192 +       vxdprintk(VXD_CBIT(nid, 0),
19193 +               "__lookup_nx_info(#%u): %p[#%u]",
19194 +               nid, nxi, nxi ? nxi->nx_id : 0);
19195 +       return nxi;
19196 +}
19197 +
19198 +
19199 +/*     __create_nx_info()
19200 +
19201 +       * create the requested context
19202 +       * get(), claim() and hash it                            */
19203 +
19204 +static struct nx_info *__create_nx_info(int id)
19205 +{
19206 +       struct nx_info *new, *nxi = NULL;
19207 +
19208 +       vxdprintk(VXD_CBIT(nid, 1), "create_nx_info(%d)*", id);
19209 +
19210 +       if (!(new = __alloc_nx_info(id)))
19211 +               return ERR_PTR(-ENOMEM);
19212 +
19213 +       /* required to make dynamic xids unique */
19214 +       spin_lock(&nx_info_hash_lock);
19215 +
19216 +       /* static context requested */
19217 +       if ((nxi = __lookup_nx_info(id))) {
19218 +               vxdprintk(VXD_CBIT(nid, 0),
19219 +                       "create_nx_info(%d) = %p (already there)", id, nxi);
19220 +               if (nx_info_flags(nxi, NXF_STATE_SETUP, 0))
19221 +                       nxi = ERR_PTR(-EBUSY);
19222 +               else
19223 +                       nxi = ERR_PTR(-EEXIST);
19224 +               goto out_unlock;
19225 +       }
19226 +       /* new context */
19227 +       vxdprintk(VXD_CBIT(nid, 0),
19228 +               "create_nx_info(%d) = %p (new)", id, new);
19229 +       claim_nx_info(new, NULL);
19230 +       __nx_set_lback(new);
19231 +       __hash_nx_info(get_nx_info(new));
19232 +       nxi = new, new = NULL;
19233 +
19234 +out_unlock:
19235 +       spin_unlock(&nx_info_hash_lock);
19236 +       if (new)
19237 +               __dealloc_nx_info(new);
19238 +       return nxi;
19239 +}
19240 +
19241 +
19242 +
19243 +/*     exported stuff                                          */
19244 +
19245 +
19246 +void unhash_nx_info(struct nx_info *nxi)
19247 +{
19248 +       __shutdown_nx_info(nxi);
19249 +       spin_lock(&nx_info_hash_lock);
19250 +       __unhash_nx_info(nxi);
19251 +       spin_unlock(&nx_info_hash_lock);
19252 +}
19253 +
19254 +/*     lookup_nx_info()
19255 +
19256 +       * search for a nx_info and get() it
19257 +       * negative id means current                             */
19258 +
19259 +struct nx_info *lookup_nx_info(int id)
19260 +{
19261 +       struct nx_info *nxi = NULL;
19262 +
19263 +       if (id < 0) {
19264 +               nxi = get_nx_info(current_nx_info());
19265 +       } else if (id > 1) {
19266 +               spin_lock(&nx_info_hash_lock);
19267 +               nxi = get_nx_info(__lookup_nx_info(id));
19268 +               spin_unlock(&nx_info_hash_lock);
19269 +       }
19270 +       return nxi;
19271 +}
19272 +
19273 +/*     nid_is_hashed()
19274 +
19275 +       * verify that nid is still hashed                       */
19276 +
19277 +int nid_is_hashed(vnid_t nid)
19278 +{
19279 +       int hashed;
19280 +
19281 +       spin_lock(&nx_info_hash_lock);
19282 +       hashed = (__lookup_nx_info(nid) != NULL);
19283 +       spin_unlock(&nx_info_hash_lock);
19284 +       return hashed;
19285 +}
19286 +
19287 +
19288 +#ifdef CONFIG_PROC_FS
19289 +
19290 +/*     get_nid_list()
19291 +
19292 +       * get a subset of hashed nids for proc
19293 +       * assumes size is at least one                          */
19294 +
19295 +int get_nid_list(int index, unsigned int *nids, int size)
19296 +{
19297 +       int hindex, nr_nids = 0;
19298 +
19299 +       /* only show current and children */
19300 +       if (!nx_check(0, VS_ADMIN | VS_WATCH)) {
19301 +               if (index > 0)
19302 +                       return 0;
19303 +               nids[nr_nids] = nx_current_nid();
19304 +               return 1;
19305 +       }
19306 +
19307 +       for (hindex = 0; hindex < NX_HASH_SIZE; hindex++) {
19308 +               struct hlist_head *head = &nx_info_hash[hindex];
19309 +               struct hlist_node *pos;
19310 +
19311 +               spin_lock(&nx_info_hash_lock);
19312 +               hlist_for_each(pos, head) {
19313 +                       struct nx_info *nxi;
19314 +
19315 +                       if (--index > 0)
19316 +                               continue;
19317 +
19318 +                       nxi = hlist_entry(pos, struct nx_info, nx_hlist);
19319 +                       nids[nr_nids] = nxi->nx_id;
19320 +                       if (++nr_nids >= size) {
19321 +                               spin_unlock(&nx_info_hash_lock);
19322 +                               goto out;
19323 +                       }
19324 +               }
19325 +               /* keep the lock time short */
19326 +               spin_unlock(&nx_info_hash_lock);
19327 +       }
19328 +out:
19329 +       return nr_nids;
19330 +}
19331 +#endif
19332 +
19333 +
19334 +/*
19335 + *     migrate task to new network
19336 + *     gets nxi, puts old_nxi on change
19337 + */
19338 +
19339 +int nx_migrate_task(struct task_struct *p, struct nx_info *nxi)
19340 +{
19341 +       struct nx_info *old_nxi;
19342 +       int ret = 0;
19343 +
19344 +       if (!p || !nxi)
19345 +               BUG();
19346 +
19347 +       vxdprintk(VXD_CBIT(nid, 5),
19348 +               "nx_migrate_task(%p,%p[#%d.%d.%d])",
19349 +               p, nxi, nxi->nx_id,
19350 +               atomic_read(&nxi->nx_usecnt),
19351 +               atomic_read(&nxi->nx_tasks));
19352 +
19353 +       if (nx_info_flags(nxi, NXF_INFO_PRIVATE, 0) &&
19354 +               !nx_info_flags(nxi, NXF_STATE_SETUP, 0))
19355 +               return -EACCES;
19356 +
19357 +       if (nx_info_state(nxi, NXS_SHUTDOWN))
19358 +               return -EFAULT;
19359 +
19360 +       /* maybe disallow this completely? */
19361 +       old_nxi = task_get_nx_info(p);
19362 +       if (old_nxi == nxi)
19363 +               goto out;
19364 +
19365 +       task_lock(p);
19366 +       if (old_nxi)
19367 +               clr_nx_info(&p->nx_info);
19368 +       claim_nx_info(nxi, p);
19369 +       set_nx_info(&p->nx_info, nxi);
19370 +       p->nid = nxi->nx_id;
19371 +       task_unlock(p);
19372 +
19373 +       vxdprintk(VXD_CBIT(nid, 5),
19374 +               "moved task %p into nxi:%p[#%d]",
19375 +               p, nxi, nxi->nx_id);
19376 +
19377 +       if (old_nxi)
19378 +               release_nx_info(old_nxi, p);
19379 +       ret = 0;
19380 +out:
19381 +       put_nx_info(old_nxi);
19382 +       return ret;
19383 +}
19384 +
19385 +
19386 +void nx_set_persistent(struct nx_info *nxi)
19387 +{
19388 +       vxdprintk(VXD_CBIT(nid, 6),
19389 +               "nx_set_persistent(%p[#%d])", nxi, nxi->nx_id);
19390 +
19391 +       get_nx_info(nxi);
19392 +       claim_nx_info(nxi, NULL);
19393 +}
19394 +
19395 +void nx_clear_persistent(struct nx_info *nxi)
19396 +{
19397 +       vxdprintk(VXD_CBIT(nid, 6),
19398 +               "nx_clear_persistent(%p[#%d])", nxi, nxi->nx_id);
19399 +
19400 +       release_nx_info(nxi, NULL);
19401 +       put_nx_info(nxi);
19402 +}
19403 +
19404 +void nx_update_persistent(struct nx_info *nxi)
19405 +{
19406 +       if (nx_info_flags(nxi, NXF_PERSISTENT, 0))
19407 +               nx_set_persistent(nxi);
19408 +       else
19409 +               nx_clear_persistent(nxi);
19410 +}
19411 +
19412 +/* vserver syscall commands below here */
19413 +
19414 +/* taks nid and nx_info functions */
19415 +
19416 +#include <asm/uaccess.h>
19417 +
19418 +
19419 +int vc_task_nid(uint32_t id)
19420 +{
19421 +       vnid_t nid;
19422 +
19423 +       if (id) {
19424 +               struct task_struct *tsk;
19425 +
19426 +               rcu_read_lock();
19427 +               tsk = find_task_by_real_pid(id);
19428 +               nid = (tsk) ? tsk->nid : -ESRCH;
19429 +               rcu_read_unlock();
19430 +       } else
19431 +               nid = nx_current_nid();
19432 +       return nid;
19433 +}
19434 +
19435 +
19436 +int vc_nx_info(struct nx_info *nxi, void __user *data)
19437 +{
19438 +       struct vcmd_nx_info_v0 vc_data;
19439 +
19440 +       vc_data.nid = nxi->nx_id;
19441 +
19442 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
19443 +               return -EFAULT;
19444 +       return 0;
19445 +}
19446 +
19447 +
19448 +/* network functions */
19449 +
19450 +int vc_net_create(uint32_t nid, void __user *data)
19451 +{
19452 +       struct vcmd_net_create vc_data = { .flagword = NXF_INIT_SET };
19453 +       struct nx_info *new_nxi;
19454 +       int ret;
19455 +
19456 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19457 +               return -EFAULT;
19458 +
19459 +       if ((nid > MAX_S_CONTEXT) || (nid < 2))
19460 +               return -EINVAL;
19461 +
19462 +       new_nxi = __create_nx_info(nid);
19463 +       if (IS_ERR(new_nxi))
19464 +               return PTR_ERR(new_nxi);
19465 +
19466 +       /* initial flags */
19467 +       new_nxi->nx_flags = vc_data.flagword;
19468 +
19469 +       ret = -ENOEXEC;
19470 +       if (vs_net_change(new_nxi, VSC_NETUP))
19471 +               goto out;
19472 +
19473 +       ret = nx_migrate_task(current, new_nxi);
19474 +       if (ret)
19475 +               goto out;
19476 +
19477 +       /* return context id on success */
19478 +       ret = new_nxi->nx_id;
19479 +
19480 +       /* get a reference for persistent contexts */
19481 +       if ((vc_data.flagword & NXF_PERSISTENT))
19482 +               nx_set_persistent(new_nxi);
19483 +out:
19484 +       release_nx_info(new_nxi, NULL);
19485 +       put_nx_info(new_nxi);
19486 +       return ret;
19487 +}
19488 +
19489 +
19490 +int vc_net_migrate(struct nx_info *nxi, void __user *data)
19491 +{
19492 +       return nx_migrate_task(current, nxi);
19493 +}
19494 +
19495 +
19496 +static inline
19497 +struct nx_addr_v4 *__find_v4_addr(struct nx_info *nxi,
19498 +       __be32 ip, __be32 ip2, __be32 mask, uint16_t type, uint16_t flags,
19499 +       struct nx_addr_v4 **prev)
19500 +{
19501 +       struct nx_addr_v4 *nxa = &nxi->v4;
19502 +
19503 +       for (; nxa; nxa = nxa->next) {
19504 +               if ((nxa->ip[0].s_addr == ip) &&
19505 +                   (nxa->ip[1].s_addr == ip2) &&
19506 +                   (nxa->mask.s_addr == mask) &&
19507 +                   (nxa->type == type) &&
19508 +                   (nxa->flags == flags))
19509 +                   return nxa;
19510 +
19511 +               /* save previous entry */
19512 +               if (prev)
19513 +                       *prev = nxa;
19514 +       }
19515 +       return NULL;
19516 +}
19517 +
19518 +int do_add_v4_addr(struct nx_info *nxi, __be32 ip, __be32 ip2, __be32 mask,
19519 +       uint16_t type, uint16_t flags)
19520 +{
19521 +       struct nx_addr_v4 *nxa = NULL;
19522 +       struct nx_addr_v4 *new = __alloc_nx_addr_v4();
19523 +       unsigned long irqflags;
19524 +       int ret = -EEXIST;
19525 +
19526 +       if (IS_ERR(new))
19527 +               return PTR_ERR(new);
19528 +
19529 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19530 +       if (__find_v4_addr(nxi, ip, ip2, mask, type, flags, &nxa))
19531 +               goto out_unlock;
19532 +
19533 +       if (NX_IPV4(nxi)) {
19534 +               nxa->next = new;
19535 +               nxa = new;
19536 +               new = NULL;
19537 +
19538 +               /* remove single ip for ip list */
19539 +               nxi->nx_flags &= ~NXF_SINGLE_IP;
19540 +       }
19541 +
19542 +       nxa->ip[0].s_addr = ip;
19543 +       nxa->ip[1].s_addr = ip2;
19544 +       nxa->mask.s_addr = mask;
19545 +       nxa->type = type;
19546 +       nxa->flags = flags;
19547 +       ret = 0;
19548 +out_unlock:
19549 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19550 +       if (new)
19551 +               __dealloc_nx_addr_v4(new);
19552 +       return ret;
19553 +}
19554 +
19555 +int do_remove_v4_addr(struct nx_info *nxi, __be32 ip, __be32 ip2, __be32 mask,
19556 +       uint16_t type, uint16_t flags)
19557 +{
19558 +       struct nx_addr_v4 *nxa = NULL;
19559 +       struct nx_addr_v4 *old = NULL;
19560 +       unsigned long irqflags;
19561 +       int ret = 0;
19562 +
19563 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19564 +       switch (type) {
19565 +       case NXA_TYPE_ADDR:
19566 +               old = __find_v4_addr(nxi, ip, ip2, mask, type, flags, &nxa);
19567 +               if (old) {
19568 +                       if (nxa) {
19569 +                               nxa->next = old->next;
19570 +                               old->next = NULL;
19571 +                       } else {
19572 +                               if (old->next) {
19573 +                                       nxa = old;
19574 +                                       old = old->next;
19575 +                                       *nxa = *old;
19576 +                                       old->next = NULL;
19577 +                               } else {
19578 +                                       memset(old, 0, sizeof(*old));
19579 +                                       old = NULL;
19580 +                               }
19581 +                       }
19582 +               } else
19583 +                       ret = -ESRCH;
19584 +               break;
19585 +
19586 +       case NXA_TYPE_ANY:
19587 +               nxa = &nxi->v4;
19588 +               old = nxa->next;
19589 +               memset(nxa, 0, sizeof(*nxa));
19590 +               break;
19591 +
19592 +       default:
19593 +               ret = -EINVAL;
19594 +       }
19595 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19596 +       __dealloc_nx_addr_v4_all(old);
19597 +       return ret;
19598 +}
19599 +
19600 +
19601 +int vc_net_add(struct nx_info *nxi, void __user *data)
19602 +{
19603 +       struct vcmd_net_addr_v0 vc_data;
19604 +       int index, ret = 0;
19605 +
19606 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19607 +               return -EFAULT;
19608 +
19609 +       switch (vc_data.type) {
19610 +       case NXA_TYPE_IPV4:
19611 +               if ((vc_data.count < 1) || (vc_data.count > 4))
19612 +                       return -EINVAL;
19613 +
19614 +               index = 0;
19615 +               while (index < vc_data.count) {
19616 +                       ret = do_add_v4_addr(nxi, vc_data.ip[index].s_addr, 0,
19617 +                               vc_data.mask[index].s_addr, NXA_TYPE_ADDR, 0);
19618 +                       if (ret)
19619 +                               return ret;
19620 +                       index++;
19621 +               }
19622 +               ret = index;
19623 +               break;
19624 +
19625 +       case NXA_TYPE_IPV4|NXA_MOD_BCAST:
19626 +               nxi->v4_bcast = vc_data.ip[0];
19627 +               ret = 1;
19628 +               break;
19629 +
19630 +       case NXA_TYPE_IPV4|NXA_MOD_LBACK:
19631 +               nxi->v4_lback = vc_data.ip[0];
19632 +               ret = 1;
19633 +               break;
19634 +
19635 +       default:
19636 +               ret = -EINVAL;
19637 +               break;
19638 +       }
19639 +       return ret;
19640 +}
19641 +
19642 +int vc_net_remove(struct nx_info *nxi, void __user *data)
19643 +{
19644 +       struct vcmd_net_addr_v0 vc_data;
19645 +
19646 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19647 +               return -EFAULT;
19648 +
19649 +       switch (vc_data.type) {
19650 +       case NXA_TYPE_ANY:
19651 +               return do_remove_v4_addr(nxi, 0, 0, 0, vc_data.type, 0);
19652 +       default:
19653 +               return -EINVAL;
19654 +       }
19655 +       return 0;
19656 +}
19657 +
19658 +
19659 +int vc_net_add_ipv4_v1(struct nx_info *nxi, void __user *data)
19660 +{
19661 +       struct vcmd_net_addr_ipv4_v1 vc_data;
19662 +
19663 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19664 +               return -EFAULT;
19665 +
19666 +       switch (vc_data.type) {
19667 +       case NXA_TYPE_ADDR:
19668 +       case NXA_TYPE_MASK:
19669 +               return do_add_v4_addr(nxi, vc_data.ip.s_addr, 0,
19670 +                       vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19671 +
19672 +       case NXA_TYPE_ADDR | NXA_MOD_BCAST:
19673 +               nxi->v4_bcast = vc_data.ip;
19674 +               break;
19675 +
19676 +       case NXA_TYPE_ADDR | NXA_MOD_LBACK:
19677 +               nxi->v4_lback = vc_data.ip;
19678 +               break;
19679 +
19680 +       default:
19681 +               return -EINVAL;
19682 +       }
19683 +       return 0;
19684 +}
19685 +
19686 +int vc_net_add_ipv4(struct nx_info *nxi, void __user *data)
19687 +{
19688 +       struct vcmd_net_addr_ipv4_v2 vc_data;
19689 +
19690 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19691 +               return -EFAULT;
19692 +
19693 +       switch (vc_data.type) {
19694 +       case NXA_TYPE_ADDR:
19695 +       case NXA_TYPE_MASK:
19696 +       case NXA_TYPE_RANGE:
19697 +               return do_add_v4_addr(nxi, vc_data.ip.s_addr, vc_data.ip2.s_addr,
19698 +                       vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19699 +
19700 +       case NXA_TYPE_ADDR | NXA_MOD_BCAST:
19701 +               nxi->v4_bcast = vc_data.ip;
19702 +               break;
19703 +
19704 +       case NXA_TYPE_ADDR | NXA_MOD_LBACK:
19705 +               nxi->v4_lback = vc_data.ip;
19706 +               break;
19707 +
19708 +       default:
19709 +               return -EINVAL;
19710 +       }
19711 +       return 0;
19712 +}
19713 +
19714 +int vc_net_rem_ipv4_v1(struct nx_info *nxi, void __user *data)
19715 +{
19716 +       struct vcmd_net_addr_ipv4_v1 vc_data;
19717 +
19718 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19719 +               return -EFAULT;
19720 +
19721 +       return do_remove_v4_addr(nxi, vc_data.ip.s_addr, 0,
19722 +               vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19723 +}
19724 +
19725 +int vc_net_rem_ipv4(struct nx_info *nxi, void __user *data)
19726 +{
19727 +       struct vcmd_net_addr_ipv4_v2 vc_data;
19728 +
19729 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19730 +               return -EFAULT;
19731 +
19732 +       return do_remove_v4_addr(nxi, vc_data.ip.s_addr, vc_data.ip2.s_addr,
19733 +               vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19734 +}
19735 +
19736 +#ifdef CONFIG_IPV6
19737 +
19738 +static inline
19739 +struct nx_addr_v6 *__find_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 +       struct nx_addr_v6 **prev)
19743 +{
19744 +       struct nx_addr_v6 *nxa = &nxi->v6;
19745 +
19746 +       for (; nxa; nxa = nxa->next) {
19747 +               if (ipv6_addr_equal(&nxa->ip, ip) &&
19748 +                   ipv6_addr_equal(&nxa->mask, mask) &&
19749 +                   (nxa->prefix == prefix) &&
19750 +                   (nxa->type == type) &&
19751 +                   (nxa->flags == flags))
19752 +                   return nxa;
19753 +
19754 +               /* save previous entry */
19755 +               if (prev)
19756 +                       *prev = nxa;
19757 +       }
19758 +       return NULL;
19759 +}
19760 +
19761 +
19762 +int do_add_v6_addr(struct nx_info *nxi,
19763 +       struct in6_addr *ip, struct in6_addr *mask,
19764 +       uint32_t prefix, uint16_t type, uint16_t flags)
19765 +{
19766 +       struct nx_addr_v6 *nxa = NULL;
19767 +       struct nx_addr_v6 *new = __alloc_nx_addr_v6();
19768 +       unsigned long irqflags;
19769 +       int ret = -EEXIST;
19770 +
19771 +       if (IS_ERR(new))
19772 +               return PTR_ERR(new);
19773 +
19774 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19775 +       if (__find_v6_addr(nxi, ip, mask, prefix, type, flags, &nxa))
19776 +               goto out_unlock;
19777 +
19778 +       if (NX_IPV6(nxi)) {
19779 +               nxa->next = new;
19780 +               nxa = new;
19781 +               new = NULL;
19782 +       }
19783 +
19784 +       nxa->ip = *ip;
19785 +       nxa->mask = *mask;
19786 +       nxa->prefix = prefix;
19787 +       nxa->type = type;
19788 +       nxa->flags = flags;
19789 +       ret = 0;
19790 +out_unlock:
19791 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19792 +       if (new)
19793 +               __dealloc_nx_addr_v6(new);
19794 +       return ret;
19795 +}
19796 +
19797 +int do_remove_v6_addr(struct nx_info *nxi,
19798 +       struct in6_addr *ip, struct in6_addr *mask,
19799 +       uint32_t prefix, uint16_t type, uint16_t flags)
19800 +{
19801 +       struct nx_addr_v6 *nxa = NULL;
19802 +       struct nx_addr_v6 *old = NULL;
19803 +       unsigned long irqflags;
19804 +       int ret = 0;
19805 +
19806 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19807 +       switch (type) {
19808 +       case NXA_TYPE_ADDR:
19809 +               old = __find_v6_addr(nxi, ip, mask, prefix, type, flags, &nxa);
19810 +               if (old) {
19811 +                       if (nxa) {
19812 +                               nxa->next = old->next;
19813 +                               old->next = NULL;
19814 +                       } else {
19815 +                               if (old->next) {
19816 +                                       nxa = old;
19817 +                                       old = old->next;
19818 +                                       *nxa = *old;
19819 +                                       old->next = NULL;
19820 +                               } else {
19821 +                                       memset(old, 0, sizeof(*old));
19822 +                                       old = NULL;
19823 +                               }
19824 +                       }
19825 +               } else
19826 +                       ret = -ESRCH;
19827 +               break;
19828 +
19829 +       case NXA_TYPE_ANY:
19830 +               nxa = &nxi->v6;
19831 +               old = nxa->next;
19832 +               memset(nxa, 0, sizeof(*nxa));
19833 +               break;
19834 +
19835 +       default:
19836 +               ret = -EINVAL;
19837 +       }
19838 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19839 +       __dealloc_nx_addr_v6_all(old);
19840 +       return ret;
19841 +}
19842 +
19843 +int vc_net_add_ipv6(struct nx_info *nxi, void __user *data)
19844 +{
19845 +       struct vcmd_net_addr_ipv6_v1 vc_data;
19846 +
19847 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19848 +               return -EFAULT;
19849 +
19850 +       switch (vc_data.type) {
19851 +       case NXA_TYPE_ADDR:
19852 +               memset(&vc_data.mask, ~0, sizeof(vc_data.mask));
19853 +               /* fallthrough */
19854 +       case NXA_TYPE_MASK:
19855 +               return do_add_v6_addr(nxi, &vc_data.ip, &vc_data.mask,
19856 +                       vc_data.prefix, vc_data.type, vc_data.flags);
19857 +       default:
19858 +               return -EINVAL;
19859 +       }
19860 +       return 0;
19861 +}
19862 +
19863 +int vc_net_remove_ipv6(struct nx_info *nxi, void __user *data)
19864 +{
19865 +       struct vcmd_net_addr_ipv6_v1 vc_data;
19866 +
19867 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19868 +               return -EFAULT;
19869 +
19870 +       switch (vc_data.type) {
19871 +       case NXA_TYPE_ADDR:
19872 +               memset(&vc_data.mask, ~0, sizeof(vc_data.mask));
19873 +               /* fallthrough */
19874 +       case NXA_TYPE_MASK:
19875 +               return do_remove_v6_addr(nxi, &vc_data.ip, &vc_data.mask,
19876 +                       vc_data.prefix, vc_data.type, vc_data.flags);
19877 +       case NXA_TYPE_ANY:
19878 +               return do_remove_v6_addr(nxi, NULL, NULL, 0, vc_data.type, 0);
19879 +       default:
19880 +               return -EINVAL;
19881 +       }
19882 +       return 0;
19883 +}
19884 +
19885 +#endif /* CONFIG_IPV6 */
19886 +
19887 +
19888 +int vc_get_nflags(struct nx_info *nxi, void __user *data)
19889 +{
19890 +       struct vcmd_net_flags_v0 vc_data;
19891 +
19892 +       vc_data.flagword = nxi->nx_flags;
19893 +
19894 +       /* special STATE flag handling */
19895 +       vc_data.mask = vs_mask_flags(~0ULL, nxi->nx_flags, NXF_ONE_TIME);
19896 +
19897 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
19898 +               return -EFAULT;
19899 +       return 0;
19900 +}
19901 +
19902 +int vc_set_nflags(struct nx_info *nxi, void __user *data)
19903 +{
19904 +       struct vcmd_net_flags_v0 vc_data;
19905 +       uint64_t mask, trigger;
19906 +
19907 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
19908 +               return -EFAULT;
19909 +
19910 +       /* special STATE flag handling */
19911 +       mask = vs_mask_mask(vc_data.mask, nxi->nx_flags, NXF_ONE_TIME);
19912 +       trigger = (mask & nxi->nx_flags) ^ (mask & vc_data.flagword);
19913 +
19914 +       nxi->nx_flags = vs_mask_flags(nxi->nx_flags,
19915 +               vc_data.flagword, mask);
19916 +       if (trigger & NXF_PERSISTENT)
19917 +               nx_update_persistent(nxi);
19918 +
19919 +       return 0;
19920 +}
19921 +
19922 +int vc_get_ncaps(struct nx_info *nxi, void __user *data)
19923 +{
19924 +       struct vcmd_net_caps_v0 vc_data;
19925 +
19926 +       vc_data.ncaps = nxi->nx_ncaps;
19927 +       vc_data.cmask = ~0ULL;
19928 +
19929 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
19930 +               return -EFAULT;
19931 +       return 0;
19932 +}
19933 +
19934 +int vc_set_ncaps(struct nx_info *nxi, void __user *data)
19935 +{
19936 +       struct vcmd_net_caps_v0 vc_data;
19937 +
19938 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
19939 +               return -EFAULT;
19940 +
19941 +       nxi->nx_ncaps = vs_mask_flags(nxi->nx_ncaps,
19942 +               vc_data.ncaps, vc_data.cmask);
19943 +       return 0;
19944 +}
19945 +
19946 +
19947 +#include <linux/module.h>
19948 +
19949 +module_init(init_network);
19950 +
19951 +EXPORT_SYMBOL_GPL(free_nx_info);
19952 +EXPORT_SYMBOL_GPL(unhash_nx_info);
19953 +
19954 diff -NurpP --minimal linux-4.9.76/kernel/vserver/proc.c linux-4.9.76-vs2.3.9.5/kernel/vserver/proc.c
19955 --- linux-4.9.76/kernel/vserver/proc.c  1970-01-01 00:00:00.000000000 +0000
19956 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/proc.c        2018-01-13 04:17:12.000000000 +0000
19957 @@ -0,0 +1,1040 @@
19958 +/*
19959 + *  linux/kernel/vserver/proc.c
19960 + *
19961 + *  Virtual Context Support
19962 + *
19963 + *  Copyright (C) 2003-2011  Herbert P?tzl
19964 + *
19965 + *  V0.01  basic structure
19966 + *  V0.02  adaptation vs1.3.0
19967 + *  V0.03  proc permissions
19968 + *  V0.04  locking/generic
19969 + *  V0.05  next generation procfs
19970 + *  V0.06  inode validation
19971 + *  V0.07  generic rewrite vid
19972 + *  V0.08  remove inode type
19973 + *  V0.09  added u/wmask info
19974 + *
19975 + */
19976 +
19977 +#include <linux/proc_fs.h>
19978 +#include <linux/fs_struct.h>
19979 +#include <linux/mount.h>
19980 +#include <linux/namei.h>
19981 +#include <asm/unistd.h>
19982 +
19983 +#include <linux/vs_context.h>
19984 +#include <linux/vs_network.h>
19985 +#include <linux/vs_cvirt.h>
19986 +
19987 +#include <linux/in.h>
19988 +#include <linux/inetdevice.h>
19989 +#include <linux/vs_inet.h>
19990 +#include <linux/vs_inet6.h>
19991 +
19992 +#include <linux/vserver/global.h>
19993 +
19994 +#include "cvirt_proc.h"
19995 +#include "cacct_proc.h"
19996 +#include "limit_proc.h"
19997 +#include "sched_proc.h"
19998 +#include "vci_config.h"
19999 +
20000 +#include <../../fs/proc/internal.h>
20001 +
20002 +
20003 +static inline char *print_cap_t(char *buffer, kernel_cap_t *c)
20004 +{
20005 +       unsigned __capi;
20006 +
20007 +       CAP_FOR_EACH_U32(__capi) {
20008 +               buffer += sprintf(buffer, "%08x",
20009 +                       c->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
20010 +       }
20011 +       return buffer;
20012 +}
20013 +
20014 +
20015 +static struct proc_dir_entry *proc_virtual;
20016 +
20017 +static struct proc_dir_entry *proc_virtnet;
20018 +
20019 +
20020 +/* first the actual feeds */
20021 +
20022 +
20023 +static int proc_vci(char *buffer)
20024 +{
20025 +       return sprintf(buffer,
20026 +               "VCIVersion:\t%04x:%04x\n"
20027 +               "VCISyscall:\t%d\n"
20028 +               "VCIKernel:\t%08x\n",
20029 +               VCI_VERSION >> 16,
20030 +               VCI_VERSION & 0xFFFF,
20031 +               __NR_vserver,
20032 +               vci_kernel_config());
20033 +}
20034 +
20035 +static int proc_virtual_info(char *buffer)
20036 +{
20037 +       return proc_vci(buffer);
20038 +}
20039 +
20040 +static int proc_virtual_status(char *buffer)
20041 +{
20042 +       return sprintf(buffer,
20043 +               "#CTotal:\t%d\n"
20044 +               "#CActive:\t%d\n"
20045 +               "#NSProxy:\t%d\t%d %d %d %d %d %d\n"
20046 +               "#InitTask:\t%d\t%d %d\n",
20047 +               atomic_read(&vx_global_ctotal),
20048 +               atomic_read(&vx_global_cactive),
20049 +               atomic_read(&vs_global_nsproxy),
20050 +               atomic_read(&vs_global_fs),
20051 +               atomic_read(&vs_global_mnt_ns),
20052 +               atomic_read(&vs_global_uts_ns),
20053 +               atomic_read(&vs_global_ipc_ns),
20054 +               atomic_read(&vs_global_user_ns),
20055 +               atomic_read(&vs_global_pid_ns),
20056 +               atomic_read(&init_task.usage),
20057 +               atomic_read(&init_task.nsproxy->count),
20058 +               init_task.fs->users);
20059 +}
20060 +
20061 +
20062 +int proc_vxi_info(struct vx_info *vxi, char *buffer)
20063 +{
20064 +       int length;
20065 +
20066 +       length = sprintf(buffer,
20067 +               "ID:\t%d\n"
20068 +               "Info:\t%p\n"
20069 +               "Init:\t%d\n"
20070 +               "OOM:\t%lld\n",
20071 +               vxi->vx_id,
20072 +               vxi,
20073 +               vxi->vx_initpid,
20074 +               vxi->vx_badness_bias);
20075 +       return length;
20076 +}
20077 +
20078 +int proc_vxi_status(struct vx_info *vxi, char *buffer)
20079 +{
20080 +       char *orig = buffer;
20081 +
20082 +       buffer += sprintf(buffer,
20083 +               "UseCnt:\t%d\n"
20084 +               "Tasks:\t%d\n"
20085 +               "Flags:\t%016llx\n",
20086 +               atomic_read(&vxi->vx_usecnt),
20087 +               atomic_read(&vxi->vx_tasks),
20088 +               (unsigned long long)vxi->vx_flags);
20089 +
20090 +       buffer += sprintf(buffer, "BCaps:\t");
20091 +       buffer = print_cap_t(buffer, &vxi->vx_bcaps);
20092 +       buffer += sprintf(buffer, "\n");
20093 +
20094 +       buffer += sprintf(buffer,
20095 +               "CCaps:\t%016llx\n"
20096 +               "Umask:\t%16llx\n"
20097 +               "Wmask:\t%16llx\n"
20098 +               "Spaces:\t%08lx %08lx\n",
20099 +               (unsigned long long)vxi->vx_ccaps,
20100 +               (unsigned long long)vxi->vx_umask,
20101 +               (unsigned long long)vxi->vx_wmask,
20102 +               vxi->space[0].vx_nsmask, vxi->space[1].vx_nsmask);
20103 +       return buffer - orig;
20104 +}
20105 +
20106 +int proc_vxi_limit(struct vx_info *vxi, char *buffer)
20107 +{
20108 +       return vx_info_proc_limit(&vxi->limit, buffer);
20109 +}
20110 +
20111 +int proc_vxi_sched(struct vx_info *vxi, char *buffer)
20112 +{
20113 +       int cpu, length;
20114 +
20115 +       length = vx_info_proc_sched(&vxi->sched, buffer);
20116 +       for_each_online_cpu(cpu) {
20117 +               length += vx_info_proc_sched_pc(
20118 +                       &vx_per_cpu(vxi, sched_pc, cpu),
20119 +                       buffer + length, cpu);
20120 +       }
20121 +       return length;
20122 +}
20123 +
20124 +int proc_vxi_nsproxy0(struct vx_info *vxi, char *buffer)
20125 +{
20126 +       return vx_info_proc_nsproxy(vxi->space[0].vx_nsproxy, buffer);
20127 +}
20128 +
20129 +int proc_vxi_nsproxy1(struct vx_info *vxi, char *buffer)
20130 +{
20131 +       return vx_info_proc_nsproxy(vxi->space[1].vx_nsproxy, buffer);
20132 +}
20133 +
20134 +int proc_vxi_cvirt(struct vx_info *vxi, char *buffer)
20135 +{
20136 +       int cpu, length;
20137 +
20138 +       vx_update_load(vxi);
20139 +       length = vx_info_proc_cvirt(&vxi->cvirt, buffer);
20140 +       for_each_online_cpu(cpu) {
20141 +               length += vx_info_proc_cvirt_pc(
20142 +                       &vx_per_cpu(vxi, cvirt_pc, cpu),
20143 +                       buffer + length, cpu);
20144 +       }
20145 +       return length;
20146 +}
20147 +
20148 +int proc_vxi_cacct(struct vx_info *vxi, char *buffer)
20149 +{
20150 +       return vx_info_proc_cacct(&vxi->cacct, buffer);
20151 +}
20152 +
20153 +
20154 +static int proc_virtnet_info(char *buffer)
20155 +{
20156 +       return proc_vci(buffer);
20157 +}
20158 +
20159 +static int proc_virtnet_status(char *buffer)
20160 +{
20161 +       return sprintf(buffer,
20162 +               "#CTotal:\t%d\n"
20163 +               "#CActive:\t%d\n",
20164 +               atomic_read(&nx_global_ctotal),
20165 +               atomic_read(&nx_global_cactive));
20166 +}
20167 +
20168 +int proc_nxi_info(struct nx_info *nxi, char *buffer)
20169 +{
20170 +       struct nx_addr_v4 *v4a;
20171 +#ifdef CONFIG_IPV6
20172 +       struct nx_addr_v6 *v6a;
20173 +#endif
20174 +       int length, i;
20175 +
20176 +       length = sprintf(buffer,
20177 +               "ID:\t%d\n"
20178 +               "Info:\t%p\n"
20179 +               "Bcast:\t" NIPQUAD_FMT "\n"
20180 +               "Lback:\t" NIPQUAD_FMT "\n",
20181 +               nxi->nx_id,
20182 +               nxi,
20183 +               NIPQUAD(nxi->v4_bcast.s_addr),
20184 +               NIPQUAD(nxi->v4_lback.s_addr));
20185 +
20186 +       if (!NX_IPV4(nxi))
20187 +               goto skip_v4;
20188 +       for (i = 0, v4a = &nxi->v4; v4a; i++, v4a = v4a->next)
20189 +               length += sprintf(buffer + length, "%d:\t" NXAV4_FMT "\n",
20190 +                       i, NXAV4(v4a));
20191 +skip_v4:
20192 +#ifdef CONFIG_IPV6
20193 +       if (!NX_IPV6(nxi))
20194 +               goto skip_v6;
20195 +       for (i = 0, v6a = &nxi->v6; v6a; i++, v6a = v6a->next)
20196 +               length += sprintf(buffer + length, "%d:\t" NXAV6_FMT "\n",
20197 +                       i, NXAV6(v6a));
20198 +skip_v6:
20199 +#endif
20200 +       return length;
20201 +}
20202 +
20203 +int proc_nxi_status(struct nx_info *nxi, char *buffer)
20204 +{
20205 +       int length;
20206 +
20207 +       length = sprintf(buffer,
20208 +               "UseCnt:\t%d\n"
20209 +               "Tasks:\t%d\n"
20210 +               "Flags:\t%016llx\n"
20211 +               "NCaps:\t%016llx\n",
20212 +               atomic_read(&nxi->nx_usecnt),
20213 +               atomic_read(&nxi->nx_tasks),
20214 +               (unsigned long long)nxi->nx_flags,
20215 +               (unsigned long long)nxi->nx_ncaps);
20216 +       return length;
20217 +}
20218 +
20219 +
20220 +
20221 +/* here the inode helpers */
20222 +
20223 +struct vs_entry {
20224 +       int len;
20225 +       char *name;
20226 +       mode_t mode;
20227 +       struct inode_operations *iop;
20228 +       struct file_operations *fop;
20229 +       union proc_op op;
20230 +};
20231 +
20232 +static struct inode *vs_proc_make_inode(struct super_block *sb, struct vs_entry *p)
20233 +{
20234 +       struct inode *inode = new_inode(sb);
20235 +
20236 +       if (!inode)
20237 +               goto out;
20238 +
20239 +       inode->i_mode = p->mode;
20240 +       if (p->iop)
20241 +               inode->i_op = p->iop;
20242 +       if (p->fop)
20243 +               inode->i_fop = p->fop;
20244 +
20245 +       set_nlink(inode, (p->mode & S_IFDIR) ? 2 : 1);
20246 +       inode->i_flags |= S_IMMUTABLE;
20247 +
20248 +       inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
20249 +
20250 +       i_uid_write(inode, 0);
20251 +       i_gid_write(inode, 0);
20252 +       i_tag_write(inode, 0);
20253 +out:
20254 +       return inode;
20255 +}
20256 +
20257 +static struct dentry *vs_proc_instantiate(struct inode *dir,
20258 +       struct dentry *dentry, int id, void *ptr)
20259 +{
20260 +       struct vs_entry *p = ptr;
20261 +       struct inode *inode = vs_proc_make_inode(dir->i_sb, p);
20262 +       struct dentry *error = ERR_PTR(-EINVAL);
20263 +
20264 +       if (!inode)
20265 +               goto out;
20266 +
20267 +       PROC_I(inode)->op = p->op;
20268 +       PROC_I(inode)->fd = id;
20269 +       d_add(dentry, inode);
20270 +       error = NULL;
20271 +out:
20272 +       return error;
20273 +}
20274 +
20275 +/* Lookups */
20276 +
20277 +typedef struct dentry *vx_instantiate_t(struct inode *, struct dentry *, int, void *);
20278 +
20279 +
20280 +/*
20281 + * Fill a directory entry.
20282 + *
20283 + * If possible create the dcache entry and derive our inode number and
20284 + * file type from dcache entry.
20285 + *
20286 + * Since all of the proc inode numbers are dynamically generated, the inode
20287 + * numbers do not exist until the inode is cache.  This means creating the
20288 + * the dcache entry in iterate is necessary to keep the inode numbers
20289 + * reported by iterate in sync with the inode numbers reported
20290 + * by stat.
20291 + */
20292 +static int vx_proc_fill_cache(struct file *filp, struct dir_context *ctx,
20293 +       char *name, int len, vx_instantiate_t instantiate, int id, void *ptr)
20294 +{
20295 +       struct dentry *child, *dir = filp->f_path.dentry;
20296 +       struct inode *inode;
20297 +       struct qstr qname;
20298 +       ino_t ino = 0;
20299 +       unsigned type = DT_UNKNOWN;
20300 +
20301 +       qname.name = name;
20302 +       qname.len  = len;
20303 +       qname.hash = full_name_hash(NULL, name, len);
20304 +
20305 +       child = d_lookup(dir, &qname);
20306 +       if (!child) {
20307 +               struct dentry *new;
20308 +               new = d_alloc(dir, &qname);
20309 +               if (new) {
20310 +                       child = instantiate(dir->d_inode, new, id, ptr);
20311 +                       if (child)
20312 +                               dput(new);
20313 +                       else
20314 +                               child = new;
20315 +               }
20316 +       }
20317 +       if (!child || IS_ERR(child) || !child->d_inode)
20318 +               goto end_instantiate;
20319 +       inode = child->d_inode;
20320 +       if (inode) {
20321 +               ino = inode->i_ino;
20322 +               type = inode->i_mode >> 12;
20323 +       }
20324 +       dput(child);
20325 +end_instantiate:
20326 +       if (!ino)
20327 +               ino = 1;
20328 +       return !dir_emit(ctx, name, len, ino, type);
20329 +}
20330 +
20331 +
20332 +
20333 +/* get and revalidate vx_info/xid */
20334 +
20335 +static inline
20336 +struct vx_info *get_proc_vx_info(struct inode *inode)
20337 +{
20338 +       return lookup_vx_info(PROC_I(inode)->fd);
20339 +}
20340 +
20341 +static int proc_xid_revalidate(struct dentry *dentry, unsigned int flags)
20342 +{
20343 +       struct inode *inode = dentry->d_inode;
20344 +       vxid_t xid = PROC_I(inode)->fd;
20345 +
20346 +       if (flags & LOOKUP_RCU) /* FIXME: can be dropped? */
20347 +               return -ECHILD;
20348 +
20349 +       if (!xid || xid_is_hashed(xid))
20350 +               return 1;
20351 +       d_drop(dentry);
20352 +       return 0;
20353 +}
20354 +
20355 +
20356 +/* get and revalidate nx_info/nid */
20357 +
20358 +static int proc_nid_revalidate(struct dentry *dentry, unsigned int flags)
20359 +{
20360 +       struct inode *inode = dentry->d_inode;
20361 +       vnid_t nid = PROC_I(inode)->fd;
20362 +
20363 +       if (flags & LOOKUP_RCU) /* FIXME: can be dropped? */
20364 +               return -ECHILD;
20365 +
20366 +       if (!nid || nid_is_hashed(nid))
20367 +               return 1;
20368 +       d_drop(dentry);
20369 +       return 0;
20370 +}
20371 +
20372 +
20373 +
20374 +#define PROC_BLOCK_SIZE (PAGE_SIZE - 1024)
20375 +
20376 +static ssize_t proc_vs_info_read(struct file *file, char __user *buf,
20377 +                         size_t count, loff_t *ppos)
20378 +{
20379 +       struct inode *inode = file->f_path.dentry->d_inode;
20380 +       unsigned long page;
20381 +       ssize_t length = 0;
20382 +
20383 +       if (count > PROC_BLOCK_SIZE)
20384 +               count = PROC_BLOCK_SIZE;
20385 +
20386 +       /* fade that out as soon as stable */
20387 +       WARN_ON(PROC_I(inode)->fd);
20388 +
20389 +       if (!(page = __get_free_page(GFP_KERNEL)))
20390 +               return -ENOMEM;
20391 +
20392 +       BUG_ON(!PROC_I(inode)->op.proc_vs_read);
20393 +       length = PROC_I(inode)->op.proc_vs_read((char *)page);
20394 +
20395 +       if (length >= 0)
20396 +               length = simple_read_from_buffer(buf, count, ppos,
20397 +                       (char *)page, length);
20398 +
20399 +       free_page(page);
20400 +       return length;
20401 +}
20402 +
20403 +static ssize_t proc_vx_info_read(struct file *file, char __user *buf,
20404 +                         size_t count, loff_t *ppos)
20405 +{
20406 +       struct inode *inode = file->f_path.dentry->d_inode;
20407 +       struct vx_info *vxi = NULL;
20408 +       vxid_t xid = PROC_I(inode)->fd;
20409 +       unsigned long page;
20410 +       ssize_t length = 0;
20411 +
20412 +       if (count > PROC_BLOCK_SIZE)
20413 +               count = PROC_BLOCK_SIZE;
20414 +
20415 +       /* fade that out as soon as stable */
20416 +       WARN_ON(!xid);
20417 +       vxi = lookup_vx_info(xid);
20418 +       if (!vxi)
20419 +               goto out;
20420 +
20421 +       length = -ENOMEM;
20422 +       if (!(page = __get_free_page(GFP_KERNEL)))
20423 +               goto out_put;
20424 +
20425 +       BUG_ON(!PROC_I(inode)->op.proc_vxi_read);
20426 +       length = PROC_I(inode)->op.proc_vxi_read(vxi, (char *)page);
20427 +
20428 +       if (length >= 0)
20429 +               length = simple_read_from_buffer(buf, count, ppos,
20430 +                       (char *)page, length);
20431 +
20432 +       free_page(page);
20433 +out_put:
20434 +       put_vx_info(vxi);
20435 +out:
20436 +       return length;
20437 +}
20438 +
20439 +static ssize_t proc_nx_info_read(struct file *file, char __user *buf,
20440 +                         size_t count, loff_t *ppos)
20441 +{
20442 +       struct inode *inode = file->f_path.dentry->d_inode;
20443 +       struct nx_info *nxi = NULL;
20444 +       vnid_t nid = PROC_I(inode)->fd;
20445 +       unsigned long page;
20446 +       ssize_t length = 0;
20447 +
20448 +       if (count > PROC_BLOCK_SIZE)
20449 +               count = PROC_BLOCK_SIZE;
20450 +
20451 +       /* fade that out as soon as stable */
20452 +       WARN_ON(!nid);
20453 +       nxi = lookup_nx_info(nid);
20454 +       if (!nxi)
20455 +               goto out;
20456 +
20457 +       length = -ENOMEM;
20458 +       if (!(page = __get_free_page(GFP_KERNEL)))
20459 +               goto out_put;
20460 +
20461 +       BUG_ON(!PROC_I(inode)->op.proc_nxi_read);
20462 +       length = PROC_I(inode)->op.proc_nxi_read(nxi, (char *)page);
20463 +
20464 +       if (length >= 0)
20465 +               length = simple_read_from_buffer(buf, count, ppos,
20466 +                       (char *)page, length);
20467 +
20468 +       free_page(page);
20469 +out_put:
20470 +       put_nx_info(nxi);
20471 +out:
20472 +       return length;
20473 +}
20474 +
20475 +
20476 +
20477 +/* here comes the lower level */
20478 +
20479 +
20480 +#define NOD(NAME, MODE, IOP, FOP, OP) {        \
20481 +       .len  = sizeof(NAME) - 1,       \
20482 +       .name = (NAME),                 \
20483 +       .mode = MODE,                   \
20484 +       .iop  = IOP,                    \
20485 +       .fop  = FOP,                    \
20486 +       .op   = OP,                     \
20487 +}
20488 +
20489 +
20490 +#define DIR(NAME, MODE, OTYPE)                         \
20491 +       NOD(NAME, (S_IFDIR | (MODE)),                   \
20492 +               &proc_ ## OTYPE ## _inode_operations,   \
20493 +               &proc_ ## OTYPE ## _file_operations, { } )
20494 +
20495 +#define INF(NAME, MODE, OTYPE)                         \
20496 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20497 +               &proc_vs_info_file_operations,          \
20498 +               { .proc_vs_read = &proc_##OTYPE } )
20499 +
20500 +#define VINF(NAME, MODE, OTYPE)                                \
20501 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20502 +               &proc_vx_info_file_operations,          \
20503 +               { .proc_vxi_read = &proc_##OTYPE } )
20504 +
20505 +#define NINF(NAME, MODE, OTYPE)                                \
20506 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20507 +               &proc_nx_info_file_operations,          \
20508 +               { .proc_nxi_read = &proc_##OTYPE } )
20509 +
20510 +
20511 +static struct file_operations proc_vs_info_file_operations = {
20512 +       .read =         proc_vs_info_read,
20513 +};
20514 +
20515 +static struct file_operations proc_vx_info_file_operations = {
20516 +       .read =         proc_vx_info_read,
20517 +};
20518 +
20519 +static struct dentry_operations proc_xid_dentry_operations = {
20520 +       .d_revalidate = proc_xid_revalidate,
20521 +};
20522 +
20523 +static struct vs_entry vx_base_stuff[] = {
20524 +       VINF("info",    S_IRUGO, vxi_info),
20525 +       VINF("status",  S_IRUGO, vxi_status),
20526 +       VINF("limit",   S_IRUGO, vxi_limit),
20527 +       VINF("sched",   S_IRUGO, vxi_sched),
20528 +       VINF("nsproxy", S_IRUGO, vxi_nsproxy0),
20529 +       VINF("nsproxy1",S_IRUGO, vxi_nsproxy1),
20530 +       VINF("cvirt",   S_IRUGO, vxi_cvirt),
20531 +       VINF("cacct",   S_IRUGO, vxi_cacct),
20532 +       {}
20533 +};
20534 +
20535 +
20536 +
20537 +
20538 +static struct dentry *proc_xid_instantiate(struct inode *dir,
20539 +       struct dentry *dentry, int id, void *ptr)
20540 +{
20541 +       dentry->d_op = &proc_xid_dentry_operations;
20542 +       return vs_proc_instantiate(dir, dentry, id, ptr);
20543 +}
20544 +
20545 +static struct dentry *proc_xid_lookup(struct inode *dir,
20546 +       struct dentry *dentry, unsigned int flags)
20547 +{
20548 +       struct vs_entry *p = vx_base_stuff;
20549 +       struct dentry *error = ERR_PTR(-ENOENT);
20550 +
20551 +       for (; p->name; p++) {
20552 +               if (p->len != dentry->d_name.len)
20553 +                       continue;
20554 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20555 +                       break;
20556 +       }
20557 +       if (!p->name)
20558 +               goto out;
20559 +
20560 +       error = proc_xid_instantiate(dir, dentry, PROC_I(dir)->fd, p);
20561 +out:
20562 +       return error;
20563 +}
20564 +
20565 +static int proc_xid_iterate(struct file *filp, struct dir_context *ctx)
20566 +{
20567 +       struct dentry *dentry = filp->f_path.dentry;
20568 +       struct inode *inode = dentry->d_inode;
20569 +       struct vs_entry *p = vx_base_stuff;
20570 +       int size = sizeof(vx_base_stuff) / sizeof(struct vs_entry);
20571 +       int index;
20572 +
20573 +       if (!dir_emit_dots(filp, ctx))
20574 +               return 0;
20575 +
20576 +       index = ctx->pos - 2;
20577 +       if (index < size) {
20578 +               for (p += index; p->name; p++) {
20579 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20580 +                               vs_proc_instantiate, PROC_I(inode)->fd, p))
20581 +                               return 0;
20582 +                       ctx->pos++;
20583 +               }
20584 +       }
20585 +       return 1;
20586 +}
20587 +
20588 +
20589 +
20590 +static struct file_operations proc_nx_info_file_operations = {
20591 +       .read =         proc_nx_info_read,
20592 +};
20593 +
20594 +static struct dentry_operations proc_nid_dentry_operations = {
20595 +       .d_revalidate = proc_nid_revalidate,
20596 +};
20597 +
20598 +static struct vs_entry nx_base_stuff[] = {
20599 +       NINF("info",    S_IRUGO, nxi_info),
20600 +       NINF("status",  S_IRUGO, nxi_status),
20601 +       {}
20602 +};
20603 +
20604 +
20605 +static struct dentry *proc_nid_instantiate(struct inode *dir,
20606 +       struct dentry *dentry, int id, void *ptr)
20607 +{
20608 +       dentry->d_op = &proc_nid_dentry_operations;
20609 +       return vs_proc_instantiate(dir, dentry, id, ptr);
20610 +}
20611 +
20612 +static struct dentry *proc_nid_lookup(struct inode *dir,
20613 +       struct dentry *dentry, unsigned int flags)
20614 +{
20615 +       struct vs_entry *p = nx_base_stuff;
20616 +       struct dentry *error = ERR_PTR(-ENOENT);
20617 +
20618 +       for (; p->name; p++) {
20619 +               if (p->len != dentry->d_name.len)
20620 +                       continue;
20621 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20622 +                       break;
20623 +       }
20624 +       if (!p->name)
20625 +               goto out;
20626 +
20627 +       error = proc_nid_instantiate(dir, dentry, PROC_I(dir)->fd, p);
20628 +out:
20629 +       return error;
20630 +}
20631 +
20632 +static int proc_nid_iterate(struct file *filp, struct dir_context *ctx)
20633 +{
20634 +       struct dentry *dentry = filp->f_path.dentry;
20635 +       struct inode *inode = dentry->d_inode;
20636 +       struct vs_entry *p = nx_base_stuff;
20637 +       int size = sizeof(nx_base_stuff) / sizeof(struct vs_entry);
20638 +       int index;
20639 +
20640 +       if (!dir_emit_dots(filp, ctx))
20641 +               return 0;
20642 +
20643 +       index = ctx->pos - 2;
20644 +       if (index < size) {
20645 +               for (p += index; p->name; p++) {
20646 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20647 +                               vs_proc_instantiate, PROC_I(inode)->fd, p))
20648 +                               return 0;
20649 +                       ctx->pos++;
20650 +               }
20651 +       }
20652 +       return 1;
20653 +}
20654 +
20655 +
20656 +#define MAX_MULBY10    ((~0U - 9) / 10)
20657 +
20658 +static inline int atovid(const char *str, int len)
20659 +{
20660 +       int vid, c;
20661 +
20662 +       vid = 0;
20663 +       while (len-- > 0) {
20664 +               c = *str - '0';
20665 +               str++;
20666 +               if (c > 9)
20667 +                       return -1;
20668 +               if (vid >= MAX_MULBY10)
20669 +                       return -1;
20670 +               vid *= 10;
20671 +               vid += c;
20672 +               if (!vid)
20673 +                       return -1;
20674 +       }
20675 +       return vid;
20676 +}
20677 +
20678 +/* now the upper level (virtual) */
20679 +
20680 +
20681 +static struct file_operations proc_xid_file_operations = {
20682 +       .read =         generic_read_dir,
20683 +       .iterate =      proc_xid_iterate,
20684 +};
20685 +
20686 +static struct inode_operations proc_xid_inode_operations = {
20687 +       .lookup =       proc_xid_lookup,
20688 +};
20689 +
20690 +static struct vs_entry vx_virtual_stuff[] = {
20691 +       INF("info",     S_IRUGO, virtual_info),
20692 +       INF("status",   S_IRUGO, virtual_status),
20693 +       DIR(NULL,       S_IRUGO | S_IXUGO, xid),
20694 +};
20695 +
20696 +
20697 +static struct dentry *proc_virtual_lookup(struct inode *dir,
20698 +       struct dentry *dentry, unsigned int flags)
20699 +{
20700 +       struct vs_entry *p = vx_virtual_stuff;
20701 +       struct dentry *error = ERR_PTR(-ENOENT);
20702 +       int id = 0;
20703 +
20704 +       for (; p->name; p++) {
20705 +               if (p->len != dentry->d_name.len)
20706 +                       continue;
20707 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20708 +                       break;
20709 +       }
20710 +       if (p->name)
20711 +               goto instantiate;
20712 +
20713 +       id = atovid(dentry->d_name.name, dentry->d_name.len);
20714 +       if ((id < 0) || !xid_is_hashed(id))
20715 +               goto out;
20716 +
20717 +instantiate:
20718 +       error = proc_xid_instantiate(dir, dentry, id, p);
20719 +out:
20720 +       return error;
20721 +}
20722 +
20723 +static struct file_operations proc_nid_file_operations = {
20724 +       .read =         generic_read_dir,
20725 +       .iterate =      proc_nid_iterate,
20726 +};
20727 +
20728 +static struct inode_operations proc_nid_inode_operations = {
20729 +       .lookup =       proc_nid_lookup,
20730 +};
20731 +
20732 +static struct vs_entry nx_virtnet_stuff[] = {
20733 +       INF("info",     S_IRUGO, virtnet_info),
20734 +       INF("status",   S_IRUGO, virtnet_status),
20735 +       DIR(NULL,       S_IRUGO | S_IXUGO, nid),
20736 +};
20737 +
20738 +
20739 +static struct dentry *proc_virtnet_lookup(struct inode *dir,
20740 +       struct dentry *dentry, unsigned int flags)
20741 +{
20742 +       struct vs_entry *p = nx_virtnet_stuff;
20743 +       struct dentry *error = ERR_PTR(-ENOENT);
20744 +       int id = 0;
20745 +
20746 +       for (; p->name; p++) {
20747 +               if (p->len != dentry->d_name.len)
20748 +                       continue;
20749 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20750 +                       break;
20751 +       }
20752 +       if (p->name)
20753 +               goto instantiate;
20754 +
20755 +       id = atovid(dentry->d_name.name, dentry->d_name.len);
20756 +       if ((id < 0) || !nid_is_hashed(id))
20757 +               goto out;
20758 +
20759 +instantiate:
20760 +       error = proc_nid_instantiate(dir, dentry, id, p);
20761 +out:
20762 +       return error;
20763 +}
20764 +
20765 +
20766 +#define PROC_MAXVIDS 32
20767 +
20768 +int proc_virtual_iterate(struct file *filp, struct dir_context *ctx)
20769 +{
20770 +       struct vs_entry *p = vx_virtual_stuff;
20771 +       int size = sizeof(vx_virtual_stuff) / sizeof(struct vs_entry);
20772 +       int index;
20773 +       unsigned int xid_array[PROC_MAXVIDS];
20774 +       char buf[PROC_NUMBUF];
20775 +       unsigned int nr_xids, i;
20776 +
20777 +       if (!dir_emit_dots(filp, ctx))
20778 +               return 0;
20779 +
20780 +       index = ctx->pos - 2;
20781 +       if (index < size) {
20782 +               for (p += index; p->name; p++) {
20783 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20784 +                               vs_proc_instantiate, 0, p))
20785 +                               return 0;
20786 +                       ctx->pos++;
20787 +               }
20788 +       }
20789 +
20790 +       index = ctx->pos - size;
20791 +       p = &vx_virtual_stuff[size - 1];
20792 +       nr_xids = get_xid_list(index, xid_array, PROC_MAXVIDS);
20793 +       for (i = 0; i < nr_xids; i++) {
20794 +               int n, xid = xid_array[i];
20795 +               unsigned int j = PROC_NUMBUF;
20796 +
20797 +               n = xid;
20798 +               do
20799 +                       buf[--j] = '0' + (n % 10);
20800 +               while (n /= 10);
20801 +
20802 +               if (vx_proc_fill_cache(filp, ctx,
20803 +                       buf + j, PROC_NUMBUF - j,
20804 +                       vs_proc_instantiate, xid, p))
20805 +                       return 0;
20806 +               ctx->pos++;
20807 +       }
20808 +       return 0;
20809 +}
20810 +
20811 +static int proc_virtual_getattr(struct vfsmount *mnt,
20812 +       struct dentry *dentry, struct kstat *stat)
20813 +{
20814 +       struct inode *inode = dentry->d_inode;
20815 +
20816 +       generic_fillattr(inode, stat);
20817 +       stat->nlink = 2 + atomic_read(&vx_global_cactive);
20818 +       return 0;
20819 +}
20820 +
20821 +static struct file_operations proc_virtual_dir_operations = {
20822 +       .read =         generic_read_dir,
20823 +       .iterate =      proc_virtual_iterate,
20824 +};
20825 +
20826 +static struct inode_operations proc_virtual_dir_inode_operations = {
20827 +       .getattr =      proc_virtual_getattr,
20828 +       .lookup =       proc_virtual_lookup,
20829 +};
20830 +
20831 +
20832 +
20833 +int proc_virtnet_iterate(struct file *filp, struct dir_context *ctx)
20834 +{
20835 +       struct vs_entry *p = nx_virtnet_stuff;
20836 +       int size = sizeof(nx_virtnet_stuff) / sizeof(struct vs_entry);
20837 +       int index;
20838 +       unsigned int nid_array[PROC_MAXVIDS];
20839 +       char buf[PROC_NUMBUF];
20840 +       unsigned int nr_nids, i;
20841 +
20842 +       if (!dir_emit_dots(filp, ctx))
20843 +               return 0;
20844 +
20845 +       index = ctx->pos - 2;
20846 +       if (index < size) {
20847 +               for (p += index; p->name; p++) {
20848 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20849 +                               vs_proc_instantiate, 0, p))
20850 +                               return 0;
20851 +                       ctx->pos++;
20852 +               }
20853 +       }
20854 +
20855 +       index = ctx->pos - size;
20856 +       p = &nx_virtnet_stuff[size - 1];
20857 +       nr_nids = get_nid_list(index, nid_array, PROC_MAXVIDS);
20858 +       for (i = 0; i < nr_nids; i++) {
20859 +               int n, nid = nid_array[i];
20860 +               unsigned int j = PROC_NUMBUF;
20861 +
20862 +               n = nid;
20863 +               do
20864 +                       buf[--j] = '0' + (n % 10);
20865 +               while (n /= 10);
20866 +
20867 +               if (vx_proc_fill_cache(filp, ctx,
20868 +                       buf + j, PROC_NUMBUF - j,
20869 +                       vs_proc_instantiate, nid, p))
20870 +                       return 0;
20871 +               ctx->pos++;
20872 +       }
20873 +       return 0;
20874 +}
20875 +
20876 +static int proc_virtnet_getattr(struct vfsmount *mnt,
20877 +       struct dentry *dentry, struct kstat *stat)
20878 +{
20879 +       struct inode *inode = dentry->d_inode;
20880 +
20881 +       generic_fillattr(inode, stat);
20882 +       stat->nlink = 2 + atomic_read(&nx_global_cactive);
20883 +       return 0;
20884 +}
20885 +
20886 +static struct file_operations proc_virtnet_dir_operations = {
20887 +       .read =         generic_read_dir,
20888 +       .iterate =      proc_virtnet_iterate,
20889 +};
20890 +
20891 +static struct inode_operations proc_virtnet_dir_inode_operations = {
20892 +       .getattr =      proc_virtnet_getattr,
20893 +       .lookup =       proc_virtnet_lookup,
20894 +};
20895 +
20896 +
20897 +
20898 +void proc_vx_init(void)
20899 +{
20900 +       struct proc_dir_entry *ent;
20901 +
20902 +       ent = proc_mkdir("virtual", 0);
20903 +       if (ent) {
20904 +               ent->proc_fops = &proc_virtual_dir_operations;
20905 +               ent->proc_iops = &proc_virtual_dir_inode_operations;
20906 +       }
20907 +       proc_virtual = ent;
20908 +
20909 +       ent = proc_mkdir("virtnet", 0);
20910 +       if (ent) {
20911 +               ent->proc_fops = &proc_virtnet_dir_operations;
20912 +               ent->proc_iops = &proc_virtnet_dir_inode_operations;
20913 +       }
20914 +       proc_virtnet = ent;
20915 +}
20916 +
20917 +
20918 +
20919 +
20920 +/* per pid info */
20921 +
20922 +void render_cap_t(struct seq_file *, const char *,
20923 +       struct vx_info *, kernel_cap_t *);
20924 +
20925 +
20926 +int proc_pid_vx_info(
20927 +       struct seq_file *m,
20928 +       struct pid_namespace *ns,
20929 +       struct pid *pid,
20930 +       struct task_struct *p)
20931 +{
20932 +       struct vx_info *vxi;
20933 +
20934 +       seq_printf(m, "XID:\t%d\n", vx_task_xid(p));
20935 +
20936 +       vxi = task_get_vx_info(p);
20937 +       if (!vxi)
20938 +               return 0;
20939 +
20940 +       render_cap_t(m, "BCaps:\t", vxi, &vxi->vx_bcaps);
20941 +       seq_printf(m, "CCaps:\t%016llx\n",
20942 +               (unsigned long long)vxi->vx_ccaps);
20943 +       seq_printf(m, "CFlags:\t%016llx\n",
20944 +               (unsigned long long)vxi->vx_flags);
20945 +       seq_printf(m, "CIPid:\t%d\n", vxi->vx_initpid);
20946 +
20947 +       put_vx_info(vxi);
20948 +       return 0;
20949 +}
20950 +
20951 +
20952 +int proc_pid_nx_info(
20953 +       struct seq_file *m,
20954 +       struct pid_namespace *ns,
20955 +       struct pid *pid,
20956 +       struct task_struct *p)
20957 +{
20958 +       struct nx_info *nxi;
20959 +       struct nx_addr_v4 *v4a;
20960 +#ifdef CONFIG_IPV6
20961 +       struct nx_addr_v6 *v6a;
20962 +#endif
20963 +       int i;
20964 +
20965 +       seq_printf(m, "NID:\t%d\n", nx_task_nid(p));
20966 +
20967 +       nxi = task_get_nx_info(p);
20968 +       if (!nxi)
20969 +               return 0;
20970 +
20971 +       seq_printf(m, "NCaps:\t%016llx\n",
20972 +               (unsigned long long)nxi->nx_ncaps);
20973 +       seq_printf(m, "NFlags:\t%016llx\n",
20974 +               (unsigned long long)nxi->nx_flags);
20975 +
20976 +       seq_printf(m, "V4Root[bcast]:\t" NIPQUAD_FMT "\n",
20977 +               NIPQUAD(nxi->v4_bcast.s_addr));
20978 +       seq_printf(m, "V4Root[lback]:\t" NIPQUAD_FMT "\n",
20979 +               NIPQUAD(nxi->v4_lback.s_addr));
20980 +       if (!NX_IPV4(nxi))
20981 +               goto skip_v4;
20982 +       for (i = 0, v4a = &nxi->v4; v4a; i++, v4a = v4a->next)
20983 +               seq_printf(m, "V4Root[%d]:\t" NXAV4_FMT "\n",
20984 +                       i, NXAV4(v4a));
20985 +skip_v4:
20986 +#ifdef CONFIG_IPV6
20987 +       if (!NX_IPV6(nxi))
20988 +               goto skip_v6;
20989 +       for (i = 0, v6a = &nxi->v6; v6a; i++, v6a = v6a->next)
20990 +               seq_printf(m, "V6Root[%d]:\t" NXAV6_FMT "\n",
20991 +                       i, NXAV6(v6a));
20992 +skip_v6:
20993 +#endif
20994 +       put_nx_info(nxi);
20995 +       return 0;
20996 +}
20997 +
20998 diff -NurpP --minimal linux-4.9.76/kernel/vserver/sched.c linux-4.9.76-vs2.3.9.5/kernel/vserver/sched.c
20999 --- linux-4.9.76/kernel/vserver/sched.c 1970-01-01 00:00:00.000000000 +0000
21000 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/sched.c       2018-01-10 02:50:49.000000000 +0000
21001 @@ -0,0 +1,83 @@
21002 +/*
21003 + *  linux/kernel/vserver/sched.c
21004 + *
21005 + *  Virtual Server: Scheduler Support
21006 + *
21007 + *  Copyright (C) 2004-2010  Herbert P?tzl
21008 + *
21009 + *  V0.01  adapted Sam Vilains version to 2.6.3
21010 + *  V0.02  removed legacy interface
21011 + *  V0.03  changed vcmds to vxi arg
21012 + *  V0.04  removed older and legacy interfaces
21013 + *  V0.05  removed scheduler code/commands
21014 + *
21015 + */
21016 +
21017 +#include <linux/vs_context.h>
21018 +#include <linux/vs_sched.h>
21019 +#include <linux/cpumask.h>
21020 +#include <linux/vserver/sched_cmd.h>
21021 +
21022 +#include <asm/uaccess.h>
21023 +
21024 +
21025 +void vx_update_sched_param(struct _vx_sched *sched,
21026 +       struct _vx_sched_pc *sched_pc)
21027 +{
21028 +       sched_pc->prio_bias = sched->prio_bias;
21029 +}
21030 +
21031 +static int do_set_prio_bias(struct vx_info *vxi, struct vcmd_prio_bias *data)
21032 +{
21033 +       int cpu;
21034 +
21035 +       if (data->prio_bias > MAX_PRIO_BIAS)
21036 +               data->prio_bias = MAX_PRIO_BIAS;
21037 +       if (data->prio_bias < MIN_PRIO_BIAS)
21038 +               data->prio_bias = MIN_PRIO_BIAS;
21039 +
21040 +       if (data->cpu_id != ~0) {
21041 +               vxi->sched.update = *get_cpu_mask(data->cpu_id);
21042 +               cpumask_and(&vxi->sched.update, &vxi->sched.update,
21043 +                       cpu_online_mask);
21044 +       } else
21045 +               cpumask_copy(&vxi->sched.update, cpu_online_mask);
21046 +
21047 +       for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)vxi->sched.update)
21048 +               vx_update_sched_param(&vxi->sched,
21049 +                       &vx_per_cpu(vxi, sched_pc, cpu));
21050 +       return 0;
21051 +}
21052 +
21053 +int vc_set_prio_bias(struct vx_info *vxi, void __user *data)
21054 +{
21055 +       struct vcmd_prio_bias vc_data;
21056 +
21057 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21058 +               return -EFAULT;
21059 +
21060 +       return do_set_prio_bias(vxi, &vc_data);
21061 +}
21062 +
21063 +int vc_get_prio_bias(struct vx_info *vxi, void __user *data)
21064 +{
21065 +       struct vcmd_prio_bias vc_data;
21066 +       struct _vx_sched_pc *pcd;
21067 +       int cpu;
21068 +
21069 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21070 +               return -EFAULT;
21071 +
21072 +       cpu = vc_data.cpu_id;
21073 +
21074 +       if (!cpu_possible(cpu))
21075 +               return -EINVAL;
21076 +
21077 +       pcd = &vx_per_cpu(vxi, sched_pc, cpu);
21078 +       vc_data.prio_bias = pcd->prio_bias;
21079 +
21080 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
21081 +               return -EFAULT;
21082 +       return 0;
21083 +}
21084 +
21085 diff -NurpP --minimal linux-4.9.76/kernel/vserver/sched_init.h linux-4.9.76-vs2.3.9.5/kernel/vserver/sched_init.h
21086 --- linux-4.9.76/kernel/vserver/sched_init.h    1970-01-01 00:00:00.000000000 +0000
21087 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/sched_init.h  2018-01-10 02:50:49.000000000 +0000
21088 @@ -0,0 +1,27 @@
21089 +
21090 +static inline void vx_info_init_sched(struct _vx_sched *sched)
21091 +{
21092 +       /* scheduling; hard code starting values as constants */
21093 +       sched->prio_bias = 0;
21094 +}
21095 +
21096 +static inline
21097 +void vx_info_init_sched_pc(struct _vx_sched_pc *sched_pc, int cpu)
21098 +{
21099 +       sched_pc->prio_bias = 0;
21100 +
21101 +       sched_pc->user_ticks = 0;
21102 +       sched_pc->sys_ticks = 0;
21103 +       sched_pc->hold_ticks = 0;
21104 +}
21105 +
21106 +static inline void vx_info_exit_sched(struct _vx_sched *sched)
21107 +{
21108 +       return;
21109 +}
21110 +
21111 +static inline
21112 +void vx_info_exit_sched_pc(struct _vx_sched_pc *sched_pc, int cpu)
21113 +{
21114 +       return;
21115 +}
21116 diff -NurpP --minimal linux-4.9.76/kernel/vserver/sched_proc.h linux-4.9.76-vs2.3.9.5/kernel/vserver/sched_proc.h
21117 --- linux-4.9.76/kernel/vserver/sched_proc.h    1970-01-01 00:00:00.000000000 +0000
21118 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/sched_proc.h  2018-01-10 02:50:49.000000000 +0000
21119 @@ -0,0 +1,32 @@
21120 +#ifndef _VX_SCHED_PROC_H
21121 +#define _VX_SCHED_PROC_H
21122 +
21123 +
21124 +static inline
21125 +int vx_info_proc_sched(struct _vx_sched *sched, char *buffer)
21126 +{
21127 +       int length = 0;
21128 +
21129 +       length += sprintf(buffer,
21130 +               "PrioBias:\t%8d\n",
21131 +               sched->prio_bias);
21132 +       return length;
21133 +}
21134 +
21135 +static inline
21136 +int vx_info_proc_sched_pc(struct _vx_sched_pc *sched_pc,
21137 +       char *buffer, int cpu)
21138 +{
21139 +       int length = 0;
21140 +
21141 +       length += sprintf(buffer + length,
21142 +               "cpu %d: %lld %lld %lld", cpu,
21143 +               (unsigned long long)sched_pc->user_ticks,
21144 +               (unsigned long long)sched_pc->sys_ticks,
21145 +               (unsigned long long)sched_pc->hold_ticks);
21146 +       length += sprintf(buffer + length,
21147 +               " %d\n", sched_pc->prio_bias);
21148 +       return length;
21149 +}
21150 +
21151 +#endif /* _VX_SCHED_PROC_H */
21152 diff -NurpP --minimal linux-4.9.76/kernel/vserver/signal.c linux-4.9.76-vs2.3.9.5/kernel/vserver/signal.c
21153 --- linux-4.9.76/kernel/vserver/signal.c        1970-01-01 00:00:00.000000000 +0000
21154 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/signal.c      2018-01-10 02:50:49.000000000 +0000
21155 @@ -0,0 +1,134 @@
21156 +/*
21157 + *  linux/kernel/vserver/signal.c
21158 + *
21159 + *  Virtual Server: Signal Support
21160 + *
21161 + *  Copyright (C) 2003-2007  Herbert P?tzl
21162 + *
21163 + *  V0.01  broken out from vcontext V0.05
21164 + *  V0.02  changed vcmds to vxi arg
21165 + *  V0.03  adjusted siginfo for kill
21166 + *
21167 + */
21168 +
21169 +#include <asm/uaccess.h>
21170 +
21171 +#include <linux/vs_context.h>
21172 +#include <linux/vs_pid.h>
21173 +#include <linux/vserver/signal_cmd.h>
21174 +
21175 +
21176 +int vx_info_kill(struct vx_info *vxi, int pid, int sig)
21177 +{
21178 +       int retval, count = 0;
21179 +       struct task_struct *p;
21180 +       struct siginfo *sip = SEND_SIG_PRIV;
21181 +
21182 +       retval = -ESRCH;
21183 +       vxdprintk(VXD_CBIT(misc, 4),
21184 +               "vx_info_kill(%p[#%d],%d,%d)*",
21185 +               vxi, vxi->vx_id, pid, sig);
21186 +       read_lock(&tasklist_lock);
21187 +       switch (pid) {
21188 +       case  0:
21189 +       case -1:
21190 +               for_each_process(p) {
21191 +                       int err = 0;
21192 +
21193 +                       if (vx_task_xid(p) != vxi->vx_id || p->pid <= 1 ||
21194 +                               (pid && vxi->vx_initpid == p->pid))
21195 +                               continue;
21196 +
21197 +                       err = group_send_sig_info(sig, sip, p);
21198 +                       ++count;
21199 +                       if (err != -EPERM)
21200 +                               retval = err;
21201 +               }
21202 +               break;
21203 +
21204 +       case 1:
21205 +               if (vxi->vx_initpid) {
21206 +                       pid = vxi->vx_initpid;
21207 +                       /* for now, only SIGINT to private init ... */
21208 +                       if (!vx_info_flags(vxi, VXF_STATE_ADMIN, 0) &&
21209 +                               /* ... as long as there are tasks left */
21210 +                               (atomic_read(&vxi->vx_tasks) > 1))
21211 +                               sig = SIGINT;
21212 +               }
21213 +               /* fallthrough */
21214 +       default:
21215 +               rcu_read_lock();
21216 +               p = find_task_by_real_pid(pid);
21217 +               rcu_read_unlock();
21218 +               if (p) {
21219 +                       if (vx_task_xid(p) == vxi->vx_id)
21220 +                               retval = group_send_sig_info(sig, sip, p);
21221 +               }
21222 +               break;
21223 +       }
21224 +       read_unlock(&tasklist_lock);
21225 +       vxdprintk(VXD_CBIT(misc, 4),
21226 +               "vx_info_kill(%p[#%d],%d,%d,%ld) = %d",
21227 +               vxi, vxi->vx_id, pid, sig, (long)sip, retval);
21228 +       return retval;
21229 +}
21230 +
21231 +int vc_ctx_kill(struct vx_info *vxi, void __user *data)
21232 +{
21233 +       struct vcmd_ctx_kill_v0 vc_data;
21234 +
21235 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21236 +               return -EFAULT;
21237 +
21238 +       /* special check to allow guest shutdown */
21239 +       if (!vx_info_flags(vxi, VXF_STATE_ADMIN, 0) &&
21240 +               /* forbid killall pid=0 when init is present */
21241 +               (((vc_data.pid < 1) && vxi->vx_initpid) ||
21242 +               (vc_data.pid > 1)))
21243 +               return -EACCES;
21244 +
21245 +       return vx_info_kill(vxi, vc_data.pid, vc_data.sig);
21246 +}
21247 +
21248 +
21249 +static int __wait_exit(struct vx_info *vxi)
21250 +{
21251 +       DECLARE_WAITQUEUE(wait, current);
21252 +       int ret = 0;
21253 +
21254 +       add_wait_queue(&vxi->vx_wait, &wait);
21255 +       set_current_state(TASK_INTERRUPTIBLE);
21256 +
21257 +wait:
21258 +       if (vx_info_state(vxi,
21259 +               VXS_SHUTDOWN | VXS_HASHED | VXS_HELPER) == VXS_SHUTDOWN)
21260 +               goto out;
21261 +       if (signal_pending(current)) {
21262 +               ret = -ERESTARTSYS;
21263 +               goto out;
21264 +       }
21265 +       schedule();
21266 +       goto wait;
21267 +
21268 +out:
21269 +       set_current_state(TASK_RUNNING);
21270 +       remove_wait_queue(&vxi->vx_wait, &wait);
21271 +       return ret;
21272 +}
21273 +
21274 +
21275 +
21276 +int vc_wait_exit(struct vx_info *vxi, void __user *data)
21277 +{
21278 +       struct vcmd_wait_exit_v0 vc_data;
21279 +       int ret;
21280 +
21281 +       ret = __wait_exit(vxi);
21282 +       vc_data.reboot_cmd = vxi->reboot_cmd;
21283 +       vc_data.exit_code = vxi->exit_code;
21284 +
21285 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
21286 +               ret = -EFAULT;
21287 +       return ret;
21288 +}
21289 +
21290 diff -NurpP --minimal linux-4.9.76/kernel/vserver/space.c linux-4.9.76-vs2.3.9.5/kernel/vserver/space.c
21291 --- linux-4.9.76/kernel/vserver/space.c 1970-01-01 00:00:00.000000000 +0000
21292 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/space.c       2018-01-13 03:42:01.000000000 +0000
21293 @@ -0,0 +1,437 @@
21294 +/*
21295 + *  linux/kernel/vserver/space.c
21296 + *
21297 + *  Virtual Server: Context Space Support
21298 + *
21299 + *  Copyright (C) 2003-2010  Herbert P?tzl
21300 + *
21301 + *  V0.01  broken out from context.c 0.07
21302 + *  V0.02  added task locking for namespace
21303 + *  V0.03  broken out vx_enter_namespace
21304 + *  V0.04  added *space support and commands
21305 + *  V0.05  added credential support
21306 + *
21307 + */
21308 +
21309 +#include <linux/utsname.h>
21310 +#include <linux/nsproxy.h>
21311 +#include <linux/err.h>
21312 +#include <linux/fs_struct.h>
21313 +#include <linux/cred.h>
21314 +#include <asm/uaccess.h>
21315 +
21316 +#include <linux/vs_context.h>
21317 +#include <linux/vserver/space.h>
21318 +#include <linux/vserver/space_cmd.h>
21319 +
21320 +atomic_t vs_global_nsproxy     = ATOMIC_INIT(0);
21321 +atomic_t vs_global_fs          = ATOMIC_INIT(0);
21322 +atomic_t vs_global_mnt_ns      = ATOMIC_INIT(0);
21323 +atomic_t vs_global_uts_ns      = ATOMIC_INIT(0);
21324 +atomic_t vs_global_ipc_ns      = ATOMIC_INIT(0);
21325 +atomic_t vs_global_user_ns     = ATOMIC_INIT(0);
21326 +atomic_t vs_global_pid_ns      = ATOMIC_INIT(0);
21327 +
21328 +
21329 +/* namespace functions */
21330 +
21331 +#include <linux/mnt_namespace.h>
21332 +#include <linux/user_namespace.h>
21333 +#include <linux/pid_namespace.h>
21334 +#include <linux/ipc_namespace.h>
21335 +#include <net/net_namespace.h>
21336 +#include "../fs/mount.h"
21337 +
21338 +
21339 +static const struct vcmd_space_mask_v1 space_mask_v0 = {
21340 +       .mask = CLONE_FS |
21341 +               CLONE_NEWNS |
21342 +#ifdef CONFIG_UTS_NS
21343 +               CLONE_NEWUTS |
21344 +#endif
21345 +#ifdef CONFIG_IPC_NS
21346 +               CLONE_NEWIPC |
21347 +#endif
21348 +#ifdef CONFIG_USER_NS
21349 +               CLONE_NEWUSER |
21350 +#endif
21351 +               0
21352 +};
21353 +
21354 +static const struct vcmd_space_mask_v1 space_mask = {
21355 +       .mask = CLONE_FS |
21356 +               CLONE_NEWNS |
21357 +#ifdef CONFIG_UTS_NS
21358 +               CLONE_NEWUTS |
21359 +#endif
21360 +#ifdef CONFIG_IPC_NS
21361 +               CLONE_NEWIPC |
21362 +#endif
21363 +#ifdef CONFIG_USER_NS
21364 +               CLONE_NEWUSER |
21365 +#endif
21366 +#ifdef CONFIG_PID_NS
21367 +               CLONE_NEWPID |
21368 +#endif
21369 +#ifdef CONFIG_NET_NS
21370 +               CLONE_NEWNET |
21371 +#endif
21372 +               0
21373 +};
21374 +
21375 +static const struct vcmd_space_mask_v1 default_space_mask = {
21376 +       .mask = CLONE_FS |
21377 +               CLONE_NEWNS |
21378 +#ifdef CONFIG_UTS_NS
21379 +               CLONE_NEWUTS |
21380 +#endif
21381 +#ifdef CONFIG_IPC_NS
21382 +               CLONE_NEWIPC |
21383 +#endif
21384 +#ifdef CONFIG_USER_NS
21385 +//             CLONE_NEWUSER |
21386 +#endif
21387 +#ifdef CONFIG_PID_NS
21388 +//             CLONE_NEWPID |
21389 +#endif
21390 +               0
21391 +};
21392 +
21393 +/*
21394 + *     build a new nsproxy mix
21395 + *      assumes that both proxies are 'const'
21396 + *     does not touch nsproxy refcounts
21397 + *     will hold a reference on the result.
21398 + */
21399 +
21400 +struct nsproxy *vs_mix_nsproxy(struct nsproxy *old_nsproxy,
21401 +       struct nsproxy *new_nsproxy, unsigned long mask)
21402 +{
21403 +       struct mnt_namespace *old_ns;
21404 +       struct uts_namespace *old_uts;
21405 +       struct ipc_namespace *old_ipc;
21406 +#ifdef CONFIG_PID_NS
21407 +       struct pid_namespace *old_pid;
21408 +#endif
21409 +#ifdef CONFIG_NET_NS
21410 +       struct net *old_net;
21411 +#endif
21412 +       struct nsproxy *nsproxy;
21413 +
21414 +       nsproxy = copy_nsproxy(old_nsproxy);
21415 +       if (!nsproxy)
21416 +               goto out;
21417 +
21418 +       if (mask & CLONE_NEWNS) {
21419 +               old_ns = nsproxy->mnt_ns;
21420 +               nsproxy->mnt_ns = new_nsproxy->mnt_ns;
21421 +               if (nsproxy->mnt_ns)
21422 +                       get_mnt_ns(nsproxy->mnt_ns);
21423 +       } else
21424 +               old_ns = NULL;
21425 +
21426 +       if (mask & CLONE_NEWUTS) {
21427 +               old_uts = nsproxy->uts_ns;
21428 +               nsproxy->uts_ns = new_nsproxy->uts_ns;
21429 +               if (nsproxy->uts_ns)
21430 +                       get_uts_ns(nsproxy->uts_ns);
21431 +       } else
21432 +               old_uts = NULL;
21433 +
21434 +       if (mask & CLONE_NEWIPC) {
21435 +               old_ipc = nsproxy->ipc_ns;
21436 +               nsproxy->ipc_ns = new_nsproxy->ipc_ns;
21437 +               if (nsproxy->ipc_ns)
21438 +                       get_ipc_ns(nsproxy->ipc_ns);
21439 +       } else
21440 +               old_ipc = NULL;
21441 +
21442 +#ifdef CONFIG_PID_NS
21443 +       if (mask & CLONE_NEWPID) {
21444 +               old_pid = nsproxy->pid_ns_for_children;
21445 +               nsproxy->pid_ns_for_children = new_nsproxy->pid_ns_for_children;
21446 +               if (nsproxy->pid_ns_for_children)
21447 +                       get_pid_ns(nsproxy->pid_ns_for_children);
21448 +       } else
21449 +               old_pid = NULL;
21450 +#endif
21451 +#ifdef CONFIG_NET_NS
21452 +       if (mask & CLONE_NEWNET) {
21453 +               old_net = nsproxy->net_ns;
21454 +               nsproxy->net_ns = new_nsproxy->net_ns;
21455 +               if (nsproxy->net_ns)
21456 +                       get_net(nsproxy->net_ns);
21457 +       } else
21458 +               old_net = NULL;
21459 +#endif
21460 +       if (old_ns)
21461 +               put_mnt_ns(old_ns);
21462 +       if (old_uts)
21463 +               put_uts_ns(old_uts);
21464 +       if (old_ipc)
21465 +               put_ipc_ns(old_ipc);
21466 +#ifdef CONFIG_PID_NS
21467 +       if (old_pid)
21468 +               put_pid_ns(old_pid);
21469 +#endif
21470 +#ifdef CONFIG_NET_NS
21471 +       if (old_net)
21472 +               put_net(old_net);
21473 +#endif
21474 +out:
21475 +       return nsproxy;
21476 +}
21477 +
21478 +
21479 +/*
21480 + *     merge two nsproxy structs into a new one.
21481 + *     will hold a reference on the result.
21482 + */
21483 +
21484 +static inline
21485 +struct nsproxy *__vs_merge_nsproxy(struct nsproxy *old,
21486 +       struct nsproxy *proxy, unsigned long mask)
21487 +{
21488 +       struct nsproxy null_proxy = { .mnt_ns = NULL };
21489 +
21490 +       if (!proxy)
21491 +               return NULL;
21492 +
21493 +       if (mask) {
21494 +               /* vs_mix_nsproxy returns with reference */
21495 +               return vs_mix_nsproxy(old ? old : &null_proxy,
21496 +                       proxy, mask);
21497 +       }
21498 +       get_nsproxy(proxy);
21499 +       return proxy;
21500 +}
21501 +
21502 +
21503 +int vx_enter_space(struct vx_info *vxi, unsigned long mask, unsigned index)
21504 +{
21505 +       struct nsproxy *proxy, *proxy_cur, *proxy_new;
21506 +       struct fs_struct *fs_cur, *fs = NULL;
21507 +       struct _vx_space *space;
21508 +       int ret, kill = 0;
21509 +
21510 +       vxdprintk(VXD_CBIT(space, 8), "vx_enter_space(%p[#%u],0x%08lx,%d)",
21511 +               vxi, vxi->vx_id, mask, index);
21512 +
21513 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0))
21514 +               return -EACCES;
21515 +
21516 +       if (index >= VX_SPACES)
21517 +               return -EINVAL;
21518 +
21519 +       space = &vxi->space[index];
21520 +
21521 +       if (!mask)
21522 +               mask = space->vx_nsmask;
21523 +
21524 +       if ((mask & space->vx_nsmask) != mask)
21525 +               return -EINVAL;
21526 +
21527 +       if (mask & CLONE_FS) {
21528 +               fs = copy_fs_struct(space->vx_fs);
21529 +               if (!fs)
21530 +                       return -ENOMEM;
21531 +       }
21532 +       proxy = space->vx_nsproxy;
21533 +
21534 +       vxdprintk(VXD_CBIT(space, 9),
21535 +               "vx_enter_space(%p[#%u],0x%08lx,%d) -> (%p,%p)",
21536 +               vxi, vxi->vx_id, mask, index, proxy, fs);
21537 +
21538 +       task_lock(current);
21539 +       fs_cur = current->fs;
21540 +
21541 +       if (mask & CLONE_FS) {
21542 +               spin_lock(&fs_cur->lock);
21543 +               current->fs = fs;
21544 +               kill = !--fs_cur->users;
21545 +               spin_unlock(&fs_cur->lock);
21546 +       }
21547 +
21548 +       proxy_cur = current->nsproxy;
21549 +       get_nsproxy(proxy_cur);
21550 +       task_unlock(current);
21551 +
21552 +       if (kill)
21553 +               free_fs_struct(fs_cur);
21554 +
21555 +       proxy_new = __vs_merge_nsproxy(proxy_cur, proxy, mask);
21556 +       if (IS_ERR(proxy_new)) {
21557 +               ret = PTR_ERR(proxy_new);
21558 +               goto out_put;
21559 +       }
21560 +
21561 +       proxy_new = xchg(&current->nsproxy, proxy_new);
21562 +
21563 +       if (mask & CLONE_NEWUSER) {
21564 +               struct cred *cred;
21565 +
21566 +               vxdprintk(VXD_CBIT(space, 10),
21567 +                       "vx_enter_space(%p[#%u],%p) cred (%p,%p)",
21568 +                       vxi, vxi->vx_id, space->vx_cred,
21569 +                       current->real_cred, current->cred);
21570 +
21571 +               if (space->vx_cred) {
21572 +                       cred = __prepare_creds(space->vx_cred);
21573 +                       if (cred)
21574 +                               commit_creds(cred);
21575 +               }
21576 +       }
21577 +
21578 +       ret = 0;
21579 +
21580 +       if (proxy_new)
21581 +               put_nsproxy(proxy_new);
21582 +out_put:
21583 +       if (proxy_cur)
21584 +               put_nsproxy(proxy_cur);
21585 +       return ret;
21586 +}
21587 +
21588 +
21589 +int vx_set_space(struct vx_info *vxi, unsigned long mask, unsigned index)
21590 +{
21591 +       struct nsproxy *proxy_vxi, *proxy_cur, *proxy_new;
21592 +       struct fs_struct *fs_vxi, *fs = NULL;
21593 +       struct _vx_space *space;
21594 +       int ret, kill = 0;
21595 +
21596 +       vxdprintk(VXD_CBIT(space, 8), "vx_set_space(%p[#%u],0x%08lx,%d)",
21597 +               vxi, vxi->vx_id, mask, index);
21598 +
21599 +       if ((mask & space_mask.mask) != mask)
21600 +               return -EINVAL;
21601 +
21602 +       if (index >= VX_SPACES)
21603 +               return -EINVAL;
21604 +
21605 +       space = &vxi->space[index];
21606 +
21607 +       proxy_vxi = space->vx_nsproxy;
21608 +       fs_vxi = space->vx_fs;
21609 +
21610 +       if (mask & CLONE_FS) {
21611 +               fs = copy_fs_struct(current->fs);
21612 +               if (!fs)
21613 +                       return -ENOMEM;
21614 +       }
21615 +
21616 +       task_lock(current);
21617 +
21618 +       if (mask & CLONE_FS) {
21619 +               spin_lock(&fs_vxi->lock);
21620 +               space->vx_fs = fs;
21621 +               kill = !--fs_vxi->users;
21622 +               spin_unlock(&fs_vxi->lock);
21623 +       }
21624 +
21625 +       proxy_cur = current->nsproxy;
21626 +       get_nsproxy(proxy_cur);
21627 +       task_unlock(current);
21628 +
21629 +       if (kill)
21630 +               free_fs_struct(fs_vxi);
21631 +
21632 +       proxy_new = __vs_merge_nsproxy(proxy_vxi, proxy_cur, mask);
21633 +       if (IS_ERR(proxy_new)) {
21634 +               ret = PTR_ERR(proxy_new);
21635 +               goto out_put;
21636 +       }
21637 +
21638 +       proxy_new = xchg(&space->vx_nsproxy, proxy_new);
21639 +       space->vx_nsmask |= mask;
21640 +
21641 +       if (mask & CLONE_NEWUSER) {
21642 +               struct cred *cred;
21643 +
21644 +               vxdprintk(VXD_CBIT(space, 10),
21645 +                       "vx_set_space(%p[#%u],%p) cred (%p,%p)",
21646 +                       vxi, vxi->vx_id, space->vx_cred,
21647 +                       current->real_cred, current->cred);
21648 +
21649 +               cred = prepare_creds();
21650 +               cred = (struct cred *)xchg(&space->vx_cred, cred);
21651 +               if (cred)
21652 +                       abort_creds(cred);
21653 +       }
21654 +
21655 +       ret = 0;
21656 +
21657 +       if (proxy_new)
21658 +               put_nsproxy(proxy_new);
21659 +out_put:
21660 +       if (proxy_cur)
21661 +               put_nsproxy(proxy_cur);
21662 +       return ret;
21663 +}
21664 +
21665 +
21666 +int vc_enter_space_v1(struct vx_info *vxi, void __user *data)
21667 +{
21668 +       struct vcmd_space_mask_v1 vc_data = { .mask = 0 };
21669 +
21670 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21671 +               return -EFAULT;
21672 +
21673 +       return vx_enter_space(vxi, vc_data.mask, 0);
21674 +}
21675 +
21676 +int vc_enter_space(struct vx_info *vxi, void __user *data)
21677 +{
21678 +       struct vcmd_space_mask_v2 vc_data = { .mask = 0 };
21679 +
21680 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21681 +               return -EFAULT;
21682 +
21683 +       if (vc_data.index >= VX_SPACES)
21684 +               return -EINVAL;
21685 +
21686 +       return vx_enter_space(vxi, vc_data.mask, vc_data.index);
21687 +}
21688 +
21689 +int vc_set_space_v1(struct vx_info *vxi, void __user *data)
21690 +{
21691 +       struct vcmd_space_mask_v1 vc_data = { .mask = 0 };
21692 +
21693 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21694 +               return -EFAULT;
21695 +
21696 +       return vx_set_space(vxi, vc_data.mask, 0);
21697 +}
21698 +
21699 +int vc_set_space(struct vx_info *vxi, void __user *data)
21700 +{
21701 +       struct vcmd_space_mask_v2 vc_data = { .mask = 0 };
21702 +
21703 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21704 +               return -EFAULT;
21705 +
21706 +       if (vc_data.index >= VX_SPACES)
21707 +               return -EINVAL;
21708 +
21709 +       return vx_set_space(vxi, vc_data.mask, vc_data.index);
21710 +}
21711 +
21712 +int vc_get_space_mask(void __user *data, int type)
21713 +{
21714 +       const struct vcmd_space_mask_v1 *mask;
21715 +
21716 +       if (type == 0)
21717 +               mask = &space_mask_v0;
21718 +       else if (type == 1)
21719 +               mask = &space_mask;
21720 +       else
21721 +               mask = &default_space_mask;
21722 +
21723 +       vxdprintk(VXD_CBIT(space, 10),
21724 +               "vc_get_space_mask(%d) = %08llx", type, mask->mask);
21725 +
21726 +       if (copy_to_user(data, mask, sizeof(*mask)))
21727 +               return -EFAULT;
21728 +       return 0;
21729 +}
21730 +
21731 diff -NurpP --minimal linux-4.9.76/kernel/vserver/switch.c linux-4.9.76-vs2.3.9.5/kernel/vserver/switch.c
21732 --- linux-4.9.76/kernel/vserver/switch.c        1970-01-01 00:00:00.000000000 +0000
21733 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/switch.c      2018-01-10 02:50:49.000000000 +0000
21734 @@ -0,0 +1,556 @@
21735 +/*
21736 + *  linux/kernel/vserver/switch.c
21737 + *
21738 + *  Virtual Server: Syscall Switch
21739 + *
21740 + *  Copyright (C) 2003-2011  Herbert P?tzl
21741 + *
21742 + *  V0.01  syscall switch
21743 + *  V0.02  added signal to context
21744 + *  V0.03  added rlimit functions
21745 + *  V0.04  added iattr, task/xid functions
21746 + *  V0.05  added debug/history stuff
21747 + *  V0.06  added compat32 layer
21748 + *  V0.07  vcmd args and perms
21749 + *  V0.08  added status commands
21750 + *  V0.09  added tag commands
21751 + *  V0.10  added oom bias
21752 + *  V0.11  added device commands
21753 + *  V0.12  added warn mask
21754 + *
21755 + */
21756 +
21757 +#include <linux/vs_context.h>
21758 +#include <linux/vs_network.h>
21759 +#include <linux/vserver/switch.h>
21760 +
21761 +#include "vci_config.h"
21762 +
21763 +
21764 +static inline
21765 +int vc_get_version(uint32_t id)
21766 +{
21767 +       return VCI_VERSION;
21768 +}
21769 +
21770 +static inline
21771 +int vc_get_vci(uint32_t id)
21772 +{
21773 +       return vci_kernel_config();
21774 +}
21775 +
21776 +#include <linux/vserver/context_cmd.h>
21777 +#include <linux/vserver/cvirt_cmd.h>
21778 +#include <linux/vserver/cacct_cmd.h>
21779 +#include <linux/vserver/limit_cmd.h>
21780 +#include <linux/vserver/network_cmd.h>
21781 +#include <linux/vserver/sched_cmd.h>
21782 +#include <linux/vserver/debug_cmd.h>
21783 +#include <linux/vserver/inode_cmd.h>
21784 +#include <linux/vserver/dlimit_cmd.h>
21785 +#include <linux/vserver/signal_cmd.h>
21786 +#include <linux/vserver/space_cmd.h>
21787 +#include <linux/vserver/tag_cmd.h>
21788 +#include <linux/vserver/device_cmd.h>
21789 +
21790 +#include <linux/vserver/inode.h>
21791 +#include <linux/vserver/dlimit.h>
21792 +
21793 +
21794 +#ifdef CONFIG_COMPAT
21795 +#define __COMPAT(name, id, data, compat)       \
21796 +       (compat) ? name ## _x32(id, data) : name(id, data)
21797 +#define __COMPAT_NO_ID(name, data, compat)     \
21798 +       (compat) ? name ## _x32(data) : name(data)
21799 +#else
21800 +#define __COMPAT(name, id, data, compat)       \
21801 +       name(id, data)
21802 +#define __COMPAT_NO_ID(name, data, compat)     \
21803 +       name(data)
21804 +#endif
21805 +
21806 +
21807 +static inline
21808 +long do_vcmd(uint32_t cmd, uint32_t id,
21809 +       struct vx_info *vxi, struct nx_info *nxi,
21810 +       void __user *data, int compat)
21811 +{
21812 +       switch (cmd) {
21813 +
21814 +       case VCMD_get_version:
21815 +               return vc_get_version(id);
21816 +       case VCMD_get_vci:
21817 +               return vc_get_vci(id);
21818 +
21819 +       case VCMD_task_xid:
21820 +               return vc_task_xid(id);
21821 +       case VCMD_vx_info:
21822 +               return vc_vx_info(vxi, data);
21823 +
21824 +       case VCMD_task_nid:
21825 +               return vc_task_nid(id);
21826 +       case VCMD_nx_info:
21827 +               return vc_nx_info(nxi, data);
21828 +
21829 +       case VCMD_task_tag:
21830 +               return vc_task_tag(id);
21831 +
21832 +       case VCMD_set_space_v1:
21833 +               return vc_set_space_v1(vxi, data);
21834 +       /* this is version 2 */
21835 +       case VCMD_set_space:
21836 +               return vc_set_space(vxi, data);
21837 +
21838 +       case VCMD_get_space_mask_v0:
21839 +               return vc_get_space_mask(data, 0);
21840 +       /* this is version 1 */
21841 +       case VCMD_get_space_mask:
21842 +               return vc_get_space_mask(data, 1);
21843 +
21844 +       case VCMD_get_space_default:
21845 +               return vc_get_space_mask(data, -1);
21846 +
21847 +       case VCMD_set_umask:
21848 +               return vc_set_umask(vxi, data);
21849 +
21850 +       case VCMD_get_umask:
21851 +               return vc_get_umask(vxi, data);
21852 +
21853 +       case VCMD_set_wmask:
21854 +               return vc_set_wmask(vxi, data);
21855 +
21856 +       case VCMD_get_wmask:
21857 +               return vc_get_wmask(vxi, data);
21858 +#ifdef CONFIG_IA32_EMULATION
21859 +       case VCMD_get_rlimit:
21860 +               return __COMPAT(vc_get_rlimit, vxi, data, compat);
21861 +       case VCMD_set_rlimit:
21862 +               return __COMPAT(vc_set_rlimit, vxi, data, compat);
21863 +#else
21864 +       case VCMD_get_rlimit:
21865 +               return vc_get_rlimit(vxi, data);
21866 +       case VCMD_set_rlimit:
21867 +               return vc_set_rlimit(vxi, data);
21868 +#endif
21869 +       case VCMD_get_rlimit_mask:
21870 +               return vc_get_rlimit_mask(id, data);
21871 +       case VCMD_reset_hits:
21872 +               return vc_reset_hits(vxi, data);
21873 +       case VCMD_reset_minmax:
21874 +               return vc_reset_minmax(vxi, data);
21875 +
21876 +       case VCMD_get_vhi_name:
21877 +               return vc_get_vhi_name(vxi, data);
21878 +       case VCMD_set_vhi_name:
21879 +               return vc_set_vhi_name(vxi, data);
21880 +
21881 +       case VCMD_ctx_stat:
21882 +               return vc_ctx_stat(vxi, data);
21883 +       case VCMD_virt_stat:
21884 +               return vc_virt_stat(vxi, data);
21885 +       case VCMD_sock_stat:
21886 +               return vc_sock_stat(vxi, data);
21887 +       case VCMD_rlimit_stat:
21888 +               return vc_rlimit_stat(vxi, data);
21889 +
21890 +       case VCMD_set_cflags:
21891 +               return vc_set_cflags(vxi, data);
21892 +       case VCMD_get_cflags:
21893 +               return vc_get_cflags(vxi, data);
21894 +
21895 +       /* this is version 1 */
21896 +       case VCMD_set_ccaps:
21897 +               return vc_set_ccaps(vxi, data);
21898 +       /* this is version 1 */
21899 +       case VCMD_get_ccaps:
21900 +               return vc_get_ccaps(vxi, data);
21901 +       case VCMD_set_bcaps:
21902 +               return vc_set_bcaps(vxi, data);
21903 +       case VCMD_get_bcaps:
21904 +               return vc_get_bcaps(vxi, data);
21905 +
21906 +       case VCMD_set_badness:
21907 +               return vc_set_badness(vxi, data);
21908 +       case VCMD_get_badness:
21909 +               return vc_get_badness(vxi, data);
21910 +
21911 +       case VCMD_set_nflags:
21912 +               return vc_set_nflags(nxi, data);
21913 +       case VCMD_get_nflags:
21914 +               return vc_get_nflags(nxi, data);
21915 +
21916 +       case VCMD_set_ncaps:
21917 +               return vc_set_ncaps(nxi, data);
21918 +       case VCMD_get_ncaps:
21919 +               return vc_get_ncaps(nxi, data);
21920 +
21921 +       case VCMD_set_prio_bias:
21922 +               return vc_set_prio_bias(vxi, data);
21923 +       case VCMD_get_prio_bias:
21924 +               return vc_get_prio_bias(vxi, data);
21925 +       case VCMD_add_dlimit:
21926 +               return __COMPAT(vc_add_dlimit, id, data, compat);
21927 +       case VCMD_rem_dlimit:
21928 +               return __COMPAT(vc_rem_dlimit, id, data, compat);
21929 +       case VCMD_set_dlimit:
21930 +               return __COMPAT(vc_set_dlimit, id, data, compat);
21931 +       case VCMD_get_dlimit:
21932 +               return __COMPAT(vc_get_dlimit, id, data, compat);
21933 +
21934 +       case VCMD_ctx_kill:
21935 +               return vc_ctx_kill(vxi, data);
21936 +
21937 +       case VCMD_wait_exit:
21938 +               return vc_wait_exit(vxi, data);
21939 +
21940 +       case VCMD_get_iattr:
21941 +               return __COMPAT_NO_ID(vc_get_iattr, data, compat);
21942 +       case VCMD_set_iattr:
21943 +               return __COMPAT_NO_ID(vc_set_iattr, data, compat);
21944 +
21945 +       case VCMD_fget_iattr:
21946 +               return vc_fget_iattr(id, data);
21947 +       case VCMD_fset_iattr:
21948 +               return vc_fset_iattr(id, data);
21949 +
21950 +       case VCMD_enter_space_v0:
21951 +               return vc_enter_space_v1(vxi, NULL);
21952 +       case VCMD_enter_space_v1:
21953 +               return vc_enter_space_v1(vxi, data);
21954 +       /* this is version 2 */
21955 +       case VCMD_enter_space:
21956 +               return vc_enter_space(vxi, data);
21957 +
21958 +       case VCMD_ctx_create_v0:
21959 +               return vc_ctx_create(id, NULL);
21960 +       case VCMD_ctx_create:
21961 +               return vc_ctx_create(id, data);
21962 +       case VCMD_ctx_migrate_v0:
21963 +               return vc_ctx_migrate(vxi, NULL);
21964 +       case VCMD_ctx_migrate:
21965 +               return vc_ctx_migrate(vxi, data);
21966 +
21967 +       case VCMD_net_create_v0:
21968 +               return vc_net_create(id, NULL);
21969 +       case VCMD_net_create:
21970 +               return vc_net_create(id, data);
21971 +       case VCMD_net_migrate:
21972 +               return vc_net_migrate(nxi, data);
21973 +
21974 +       case VCMD_tag_migrate:
21975 +               return vc_tag_migrate(id);
21976 +
21977 +       case VCMD_net_add:
21978 +               return vc_net_add(nxi, data);
21979 +       case VCMD_net_remove:
21980 +               return vc_net_remove(nxi, data);
21981 +
21982 +       case VCMD_net_add_ipv4_v1:
21983 +               return vc_net_add_ipv4_v1(nxi, data);
21984 +       /* this is version 2 */
21985 +       case VCMD_net_add_ipv4:
21986 +               return vc_net_add_ipv4(nxi, data);
21987 +
21988 +       case VCMD_net_rem_ipv4_v1:
21989 +               return vc_net_rem_ipv4_v1(nxi, data);
21990 +       /* this is version 2 */
21991 +       case VCMD_net_rem_ipv4:
21992 +               return vc_net_rem_ipv4(nxi, data);
21993 +#ifdef CONFIG_IPV6
21994 +       case VCMD_net_add_ipv6:
21995 +               return vc_net_add_ipv6(nxi, data);
21996 +       case VCMD_net_remove_ipv6:
21997 +               return vc_net_remove_ipv6(nxi, data);
21998 +#endif
21999 +/*     case VCMD_add_match_ipv4:
22000 +               return vc_add_match_ipv4(nxi, data);
22001 +       case VCMD_get_match_ipv4:
22002 +               return vc_get_match_ipv4(nxi, data);
22003 +#ifdef CONFIG_IPV6
22004 +       case VCMD_add_match_ipv6:
22005 +               return vc_add_match_ipv6(nxi, data);
22006 +       case VCMD_get_match_ipv6:
22007 +               return vc_get_match_ipv6(nxi, data);
22008 +#endif */
22009 +
22010 +#ifdef CONFIG_VSERVER_DEVICE
22011 +       case VCMD_set_mapping:
22012 +               return __COMPAT(vc_set_mapping, vxi, data, compat);
22013 +       case VCMD_unset_mapping:
22014 +               return __COMPAT(vc_unset_mapping, vxi, data, compat);
22015 +#endif
22016 +#ifdef CONFIG_VSERVER_HISTORY
22017 +       case VCMD_dump_history:
22018 +               return vc_dump_history(id);
22019 +       case VCMD_read_history:
22020 +               return __COMPAT(vc_read_history, id, data, compat);
22021 +#endif
22022 +       default:
22023 +               vxwprintk_task(1, "unimplemented VCMD_%02d_%d[%d]",
22024 +                       VC_CATEGORY(cmd), VC_COMMAND(cmd), VC_VERSION(cmd));
22025 +       }
22026 +       return -ENOSYS;
22027 +}
22028 +
22029 +
22030 +#define        __VCMD(vcmd, _perm, _args, _flags)              \
22031 +       case VCMD_ ## vcmd: perm = _perm;               \
22032 +               args = _args; flags = _flags; break
22033 +
22034 +
22035 +#define VCA_NONE       0x00
22036 +#define VCA_VXI                0x01
22037 +#define VCA_NXI                0x02
22038 +
22039 +#define VCF_NONE       0x00
22040 +#define VCF_INFO       0x01
22041 +#define VCF_ADMIN      0x02
22042 +#define VCF_ARES       0x06    /* includes admin */
22043 +#define VCF_SETUP      0x08
22044 +
22045 +#define VCF_ZIDOK      0x10    /* zero id okay */
22046 +
22047 +
22048 +static inline
22049 +long do_vserver(uint32_t cmd, uint32_t id, void __user *data, int compat)
22050 +{
22051 +       long ret;
22052 +       int permit = -1, state = 0;
22053 +       int perm = -1, args = 0, flags = 0;
22054 +       struct vx_info *vxi = NULL;
22055 +       struct nx_info *nxi = NULL;
22056 +
22057 +       switch (cmd) {
22058 +       /* unpriviledged commands */
22059 +       __VCMD(get_version,      0, VCA_NONE,   0);
22060 +       __VCMD(get_vci,          0, VCA_NONE,   0);
22061 +       __VCMD(get_rlimit_mask,  0, VCA_NONE,   0);
22062 +       __VCMD(get_space_mask_v0,0, VCA_NONE,   0);
22063 +       __VCMD(get_space_mask,   0, VCA_NONE,   0);
22064 +       __VCMD(get_space_default,0, VCA_NONE,   0);
22065 +
22066 +       /* info commands */
22067 +       __VCMD(task_xid,         2, VCA_NONE,   0);
22068 +       __VCMD(reset_hits,       2, VCA_VXI,    0);
22069 +       __VCMD(reset_minmax,     2, VCA_VXI,    0);
22070 +       __VCMD(vx_info,          3, VCA_VXI,    VCF_INFO);
22071 +       __VCMD(get_bcaps,        3, VCA_VXI,    VCF_INFO);
22072 +       __VCMD(get_ccaps,        3, VCA_VXI,    VCF_INFO);
22073 +       __VCMD(get_cflags,       3, VCA_VXI,    VCF_INFO);
22074 +       __VCMD(get_umask,        3, VCA_VXI,    VCF_INFO);
22075 +       __VCMD(get_wmask,        3, VCA_VXI,    VCF_INFO);
22076 +       __VCMD(get_badness,      3, VCA_VXI,    VCF_INFO);
22077 +       __VCMD(get_vhi_name,     3, VCA_VXI,    VCF_INFO);
22078 +       __VCMD(get_rlimit,       3, VCA_VXI,    VCF_INFO);
22079 +
22080 +       __VCMD(ctx_stat,         3, VCA_VXI,    VCF_INFO);
22081 +       __VCMD(virt_stat,        3, VCA_VXI,    VCF_INFO);
22082 +       __VCMD(sock_stat,        3, VCA_VXI,    VCF_INFO);
22083 +       __VCMD(rlimit_stat,      3, VCA_VXI,    VCF_INFO);
22084 +
22085 +       __VCMD(task_nid,         2, VCA_NONE,   0);
22086 +       __VCMD(nx_info,          3, VCA_NXI,    VCF_INFO);
22087 +       __VCMD(get_ncaps,        3, VCA_NXI,    VCF_INFO);
22088 +       __VCMD(get_nflags,       3, VCA_NXI,    VCF_INFO);
22089 +
22090 +       __VCMD(task_tag,         2, VCA_NONE,   0);
22091 +
22092 +       __VCMD(get_iattr,        2, VCA_NONE,   0);
22093 +       __VCMD(fget_iattr,       2, VCA_NONE,   0);
22094 +       __VCMD(get_dlimit,       3, VCA_NONE,   VCF_INFO);
22095 +       __VCMD(get_prio_bias,    3, VCA_VXI,    VCF_INFO);
22096 +
22097 +       /* lower admin commands */
22098 +       __VCMD(wait_exit,        4, VCA_VXI,    VCF_INFO);
22099 +       __VCMD(ctx_create_v0,    5, VCA_NONE,   0);
22100 +       __VCMD(ctx_create,       5, VCA_NONE,   0);
22101 +       __VCMD(ctx_migrate_v0,   5, VCA_VXI,    VCF_ADMIN);
22102 +       __VCMD(ctx_migrate,      5, VCA_VXI,    VCF_ADMIN);
22103 +       __VCMD(enter_space_v0,   5, VCA_VXI,    VCF_ADMIN);
22104 +       __VCMD(enter_space_v1,   5, VCA_VXI,    VCF_ADMIN);
22105 +       __VCMD(enter_space,      5, VCA_VXI,    VCF_ADMIN);
22106 +
22107 +       __VCMD(net_create_v0,    5, VCA_NONE,   0);
22108 +       __VCMD(net_create,       5, VCA_NONE,   0);
22109 +       __VCMD(net_migrate,      5, VCA_NXI,    VCF_ADMIN);
22110 +
22111 +       __VCMD(tag_migrate,      5, VCA_NONE,   VCF_ADMIN);
22112 +
22113 +       /* higher admin commands */
22114 +       __VCMD(ctx_kill,         6, VCA_VXI,    VCF_ARES);
22115 +       __VCMD(set_space_v1,     7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22116 +       __VCMD(set_space,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22117 +
22118 +       __VCMD(set_ccaps,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22119 +       __VCMD(set_bcaps,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22120 +       __VCMD(set_cflags,       7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22121 +       __VCMD(set_umask,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22122 +       __VCMD(set_wmask,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22123 +       __VCMD(set_badness,      7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22124 +
22125 +       __VCMD(set_vhi_name,     7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22126 +       __VCMD(set_rlimit,       7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22127 +       __VCMD(set_prio_bias,    7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22128 +
22129 +       __VCMD(set_ncaps,        7, VCA_NXI,    VCF_ARES | VCF_SETUP);
22130 +       __VCMD(set_nflags,       7, VCA_NXI,    VCF_ARES | VCF_SETUP);
22131 +       __VCMD(net_add,          8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22132 +       __VCMD(net_remove,       8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22133 +       __VCMD(net_add_ipv4_v1,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22134 +       __VCMD(net_rem_ipv4_v1,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22135 +       __VCMD(net_add_ipv4,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22136 +       __VCMD(net_rem_ipv4,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22137 +#ifdef CONFIG_IPV6
22138 +       __VCMD(net_add_ipv6,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22139 +       __VCMD(net_remove_ipv6,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22140 +#endif
22141 +       __VCMD(set_iattr,        7, VCA_NONE,   0);
22142 +       __VCMD(fset_iattr,       7, VCA_NONE,   0);
22143 +       __VCMD(set_dlimit,       7, VCA_NONE,   VCF_ARES);
22144 +       __VCMD(add_dlimit,       8, VCA_NONE,   VCF_ARES);
22145 +       __VCMD(rem_dlimit,       8, VCA_NONE,   VCF_ARES);
22146 +
22147 +#ifdef CONFIG_VSERVER_DEVICE
22148 +       __VCMD(set_mapping,      8, VCA_VXI,    VCF_ARES|VCF_ZIDOK);
22149 +       __VCMD(unset_mapping,    8, VCA_VXI,    VCF_ARES|VCF_ZIDOK);
22150 +#endif
22151 +       /* debug level admin commands */
22152 +#ifdef CONFIG_VSERVER_HISTORY
22153 +       __VCMD(dump_history,     9, VCA_NONE,   0);
22154 +       __VCMD(read_history,     9, VCA_NONE,   0);
22155 +#endif
22156 +
22157 +       default:
22158 +               perm = -1;
22159 +       }
22160 +
22161 +       vxdprintk(VXD_CBIT(switch, 0),
22162 +               "vc: VCMD_%02d_%d[%d], %d,%p [%d,%d,%x,%x]",
22163 +               VC_CATEGORY(cmd), VC_COMMAND(cmd),
22164 +               VC_VERSION(cmd), id, data, compat,
22165 +               perm, args, flags);
22166 +
22167 +       ret = -ENOSYS;
22168 +       if (perm < 0)
22169 +               goto out;
22170 +
22171 +       state = 1;
22172 +       if (!capable(CAP_CONTEXT))
22173 +               goto out;
22174 +
22175 +       state = 2;
22176 +       /* moved here from the individual commands */
22177 +       ret = -EPERM;
22178 +       if ((perm > 1) && !capable(CAP_SYS_ADMIN))
22179 +               goto out;
22180 +
22181 +       state = 3;
22182 +       /* vcmd involves resource management  */
22183 +       ret = -EPERM;
22184 +       if ((flags & VCF_ARES) && !capable(CAP_SYS_RESOURCE))
22185 +               goto out;
22186 +
22187 +       state = 4;
22188 +       /* various legacy exceptions */
22189 +       switch (cmd) {
22190 +       /* will go away when spectator is a cap */
22191 +       case VCMD_ctx_migrate_v0:
22192 +       case VCMD_ctx_migrate:
22193 +               if (id == 1) {
22194 +                       current->xid = 1;
22195 +                       ret = 1;
22196 +                       goto out;
22197 +               }
22198 +               break;
22199 +
22200 +       /* will go away when spectator is a cap */
22201 +       case VCMD_net_migrate:
22202 +               if (id == 1) {
22203 +                       current->nid = 1;
22204 +                       ret = 1;
22205 +                       goto out;
22206 +               }
22207 +               break;
22208 +       }
22209 +
22210 +       /* vcmds are fine by default */
22211 +       permit = 1;
22212 +
22213 +       /* admin type vcmds require admin ... */
22214 +       if (flags & VCF_ADMIN)
22215 +               permit = vx_check(0, VS_ADMIN) ? 1 : 0;
22216 +
22217 +       /* ... but setup type vcmds override that */
22218 +       if (!permit && (flags & VCF_SETUP))
22219 +               permit = vx_flags(VXF_STATE_SETUP, 0) ? 2 : 0;
22220 +
22221 +       state = 5;
22222 +       ret = -EPERM;
22223 +       if (!permit)
22224 +               goto out;
22225 +
22226 +       state = 6;
22227 +       if (!id && (flags & VCF_ZIDOK))
22228 +               goto skip_id;
22229 +
22230 +       ret = -ESRCH;
22231 +       if (args & VCA_VXI) {
22232 +               vxi = lookup_vx_info(id);
22233 +               if (!vxi)
22234 +                       goto out;
22235 +
22236 +               if ((flags & VCF_ADMIN) &&
22237 +                       /* special case kill for shutdown */
22238 +                       (cmd != VCMD_ctx_kill) &&
22239 +                       /* can context be administrated? */
22240 +                       !vx_info_flags(vxi, VXF_STATE_ADMIN, 0)) {
22241 +                       ret = -EACCES;
22242 +                       goto out_vxi;
22243 +               }
22244 +       }
22245 +       state = 7;
22246 +       if (args & VCA_NXI) {
22247 +               nxi = lookup_nx_info(id);
22248 +               if (!nxi)
22249 +                       goto out_vxi;
22250 +
22251 +               if ((flags & VCF_ADMIN) &&
22252 +                       /* can context be administrated? */
22253 +                       !nx_info_flags(nxi, NXF_STATE_ADMIN, 0)) {
22254 +                       ret = -EACCES;
22255 +                       goto out_nxi;
22256 +               }
22257 +       }
22258 +skip_id:
22259 +       state = 8;
22260 +       ret = do_vcmd(cmd, id, vxi, nxi, data, compat);
22261 +
22262 +out_nxi:
22263 +       if ((args & VCA_NXI) && nxi)
22264 +               put_nx_info(nxi);
22265 +out_vxi:
22266 +       if ((args & VCA_VXI) && vxi)
22267 +               put_vx_info(vxi);
22268 +out:
22269 +       vxdprintk(VXD_CBIT(switch, 1),
22270 +               "vc: VCMD_%02d_%d[%d] = %08lx(%ld) [%d,%d]",
22271 +               VC_CATEGORY(cmd), VC_COMMAND(cmd),
22272 +               VC_VERSION(cmd), ret, ret, state, permit);
22273 +       return ret;
22274 +}
22275 +
22276 +asmlinkage long
22277 +sys_vserver(uint32_t cmd, uint32_t id, void __user *data)
22278 +{
22279 +       return do_vserver(cmd, id, data, 0);
22280 +}
22281 +
22282 +#ifdef CONFIG_COMPAT
22283 +
22284 +asmlinkage long
22285 +sys32_vserver(uint32_t cmd, uint32_t id, void __user *data)
22286 +{
22287 +       return do_vserver(cmd, id, data, 1);
22288 +}
22289 +
22290 +#endif /* CONFIG_COMPAT */
22291 diff -NurpP --minimal linux-4.9.76/kernel/vserver/sysctl.c linux-4.9.76-vs2.3.9.5/kernel/vserver/sysctl.c
22292 --- linux-4.9.76/kernel/vserver/sysctl.c        1970-01-01 00:00:00.000000000 +0000
22293 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/sysctl.c      2018-01-13 05:37:59.000000000 +0000
22294 @@ -0,0 +1,249 @@
22295 +/*
22296 + *  kernel/vserver/sysctl.c
22297 + *
22298 + *  Virtual Context Support
22299 + *
22300 + *  Copyright (C) 2004-2007  Herbert P?tzl
22301 + *
22302 + *  V0.01  basic structure
22303 + *
22304 + */
22305 +
22306 +#include <linux/module.h>
22307 +#include <linux/ctype.h>
22308 +#include <linux/sysctl.h>
22309 +#include <linux/parser.h>
22310 +#include <linux/utsname.h>
22311 +
22312 +#include <asm/uaccess.h>
22313 +#include <asm/sections.h>
22314 +
22315 +enum {
22316 +       CTL_DEBUG_ERROR         = 0,
22317 +       CTL_DEBUG_SWITCH        = 1,
22318 +       CTL_DEBUG_XID,
22319 +       CTL_DEBUG_NID,
22320 +       CTL_DEBUG_TAG,
22321 +       CTL_DEBUG_NET,
22322 +       CTL_DEBUG_LIMIT,
22323 +       CTL_DEBUG_CRES,
22324 +       CTL_DEBUG_DLIM,
22325 +       CTL_DEBUG_QUOTA,
22326 +       CTL_DEBUG_CVIRT,
22327 +       CTL_DEBUG_SPACE,
22328 +       CTL_DEBUG_PERM,
22329 +       CTL_DEBUG_MISC,
22330 +};
22331 +
22332 +
22333 +unsigned int vs_debug_switch   = 0;
22334 +unsigned int vs_debug_xid      = 0;
22335 +unsigned int vs_debug_nid      = 0;
22336 +unsigned int vs_debug_tag      = 0;
22337 +unsigned int vs_debug_net      = 0;
22338 +unsigned int vs_debug_limit    = 0;
22339 +unsigned int vs_debug_cres     = 0;
22340 +unsigned int vs_debug_dlim     = 0;
22341 +unsigned int vs_debug_quota    = 0;
22342 +unsigned int vs_debug_cvirt    = 0;
22343 +unsigned int vs_debug_space    = 0;
22344 +unsigned int vs_debug_perm     = 0;
22345 +unsigned int vs_debug_misc     = 0;
22346 +
22347 +
22348 +static struct ctl_table_header *vserver_table_header;
22349 +static struct ctl_table vserver_root_table[];
22350 +
22351 +
22352 +void vserver_register_sysctl(void)
22353 +{
22354 +       if (!vserver_table_header) {
22355 +               vserver_table_header = register_sysctl_table(vserver_root_table);
22356 +       }
22357 +
22358 +}
22359 +
22360 +void vserver_unregister_sysctl(void)
22361 +{
22362 +       if (vserver_table_header) {
22363 +               unregister_sysctl_table(vserver_table_header);
22364 +               vserver_table_header = NULL;
22365 +       }
22366 +}
22367 +
22368 +static int proc_dodebug(struct ctl_table *table, int write,
22369 +       void __user *buffer, size_t *lenp, loff_t *ppos)
22370 +{
22371 +       char            tmpbuf[20], *p, c;
22372 +       unsigned int    value;
22373 +       size_t          left, len;
22374 +
22375 +       if ((*ppos && !write) || !*lenp) {
22376 +               *lenp = 0;
22377 +               return 0;
22378 +       }
22379 +
22380 +       left = *lenp;
22381 +
22382 +       if (write) {
22383 +               if (!access_ok(VERIFY_READ, buffer, left))
22384 +                       return -EFAULT;
22385 +               p = (char *)buffer;
22386 +               while (left && __get_user(c, p) >= 0 && isspace(c))
22387 +                       left--, p++;
22388 +               if (!left)
22389 +                       goto done;
22390 +
22391 +               if (left > sizeof(tmpbuf) - 1)
22392 +                       return -EINVAL;
22393 +               if (copy_from_user(tmpbuf, p, left))
22394 +                       return -EFAULT;
22395 +               tmpbuf[left] = '\0';
22396 +
22397 +               for (p = tmpbuf, value = 0; '0' <= *p && *p <= '9'; p++, left--)
22398 +                       value = 10 * value + (*p - '0');
22399 +               if (*p && !isspace(*p))
22400 +                       return -EINVAL;
22401 +               while (left && isspace(*p))
22402 +                       left--, p++;
22403 +               *(unsigned int *)table->data = value;
22404 +       } else {
22405 +               if (!access_ok(VERIFY_WRITE, buffer, left))
22406 +                       return -EFAULT;
22407 +               len = sprintf(tmpbuf, "%d", *(unsigned int *)table->data);
22408 +               if (len > left)
22409 +                       len = left;
22410 +               if (__copy_to_user(buffer, tmpbuf, len))
22411 +                       return -EFAULT;
22412 +               if ((left -= len) > 0) {
22413 +                       if (put_user('\n', (char *)buffer + len))
22414 +                               return -EFAULT;
22415 +                       left--;
22416 +               }
22417 +       }
22418 +
22419 +done:
22420 +       *lenp -= left;
22421 +       *ppos += *lenp;
22422 +       return 0;
22423 +}
22424 +
22425 +static int zero;
22426 +
22427 +#define        CTL_ENTRY(ctl, name)                            \
22428 +       {                                               \
22429 +               .procname       = #name,                \
22430 +               .data           = &vs_ ## name,         \
22431 +               .maxlen         = sizeof(int),          \
22432 +               .mode           = 0644,                 \
22433 +               .proc_handler   = &proc_dodebug,        \
22434 +               .extra1         = &zero,                \
22435 +               .extra2         = &zero,                \
22436 +       }
22437 +
22438 +static struct ctl_table vserver_debug_table[] = {
22439 +       CTL_ENTRY(CTL_DEBUG_SWITCH,     debug_switch),
22440 +       CTL_ENTRY(CTL_DEBUG_XID,        debug_xid),
22441 +       CTL_ENTRY(CTL_DEBUG_NID,        debug_nid),
22442 +       CTL_ENTRY(CTL_DEBUG_TAG,        debug_tag),
22443 +       CTL_ENTRY(CTL_DEBUG_NET,        debug_net),
22444 +       CTL_ENTRY(CTL_DEBUG_LIMIT,      debug_limit),
22445 +       CTL_ENTRY(CTL_DEBUG_CRES,       debug_cres),
22446 +       CTL_ENTRY(CTL_DEBUG_DLIM,       debug_dlim),
22447 +       CTL_ENTRY(CTL_DEBUG_QUOTA,      debug_quota),
22448 +       CTL_ENTRY(CTL_DEBUG_CVIRT,      debug_cvirt),
22449 +       CTL_ENTRY(CTL_DEBUG_SPACE,      debug_space),
22450 +       CTL_ENTRY(CTL_DEBUG_PERM,       debug_perm),
22451 +       CTL_ENTRY(CTL_DEBUG_MISC,       debug_misc),
22452 +       { 0 }
22453 +};
22454 +
22455 +static struct ctl_table vserver_root_table[] = {
22456 +       {
22457 +               .procname       = "vserver",
22458 +               .mode           = 0555,
22459 +               .child          = vserver_debug_table
22460 +       },
22461 +       { 0 }
22462 +};
22463 +
22464 +
22465 +static match_table_t tokens = {
22466 +       { CTL_DEBUG_SWITCH,     "switch=%x"     },
22467 +       { CTL_DEBUG_XID,        "xid=%x"        },
22468 +       { CTL_DEBUG_NID,        "nid=%x"        },
22469 +       { CTL_DEBUG_TAG,        "tag=%x"        },
22470 +       { CTL_DEBUG_NET,        "net=%x"        },
22471 +       { CTL_DEBUG_LIMIT,      "limit=%x"      },
22472 +       { CTL_DEBUG_CRES,       "cres=%x"       },
22473 +       { CTL_DEBUG_DLIM,       "dlim=%x"       },
22474 +       { CTL_DEBUG_QUOTA,      "quota=%x"      },
22475 +       { CTL_DEBUG_CVIRT,      "cvirt=%x"      },
22476 +       { CTL_DEBUG_SPACE,      "space=%x"      },
22477 +       { CTL_DEBUG_PERM,       "perm=%x"       },
22478 +       { CTL_DEBUG_MISC,       "misc=%x"       },
22479 +       { CTL_DEBUG_ERROR,      NULL            }
22480 +};
22481 +
22482 +#define        HANDLE_CASE(id, name, val)                              \
22483 +       case CTL_DEBUG_ ## id:                                  \
22484 +               vs_debug_ ## name = val;                        \
22485 +               printk("vs_debug_" #name "=0x%x\n", val);       \
22486 +               break
22487 +
22488 +
22489 +static int __init vs_debug_setup(char *str)
22490 +{
22491 +       char *p;
22492 +       int token;
22493 +
22494 +       printk("vs_debug_setup(%s)\n", str);
22495 +       while ((p = strsep(&str, ",")) != NULL) {
22496 +               substring_t args[MAX_OPT_ARGS];
22497 +               unsigned int value;
22498 +
22499 +               if (!*p)
22500 +                       continue;
22501 +
22502 +               token = match_token(p, tokens, args);
22503 +               value = (token > 0) ? simple_strtoul(args[0].from, NULL, 0) : 0;
22504 +
22505 +               switch (token) {
22506 +               HANDLE_CASE(SWITCH, switch, value);
22507 +               HANDLE_CASE(XID,    xid,    value);
22508 +               HANDLE_CASE(NID,    nid,    value);
22509 +               HANDLE_CASE(TAG,    tag,    value);
22510 +               HANDLE_CASE(NET,    net,    value);
22511 +               HANDLE_CASE(LIMIT,  limit,  value);
22512 +               HANDLE_CASE(CRES,   cres,   value);
22513 +               HANDLE_CASE(DLIM,   dlim,   value);
22514 +               HANDLE_CASE(QUOTA,  quota,  value);
22515 +               HANDLE_CASE(CVIRT,  cvirt,  value);
22516 +               HANDLE_CASE(SPACE,  space,  value);
22517 +               HANDLE_CASE(PERM,   perm,   value);
22518 +               HANDLE_CASE(MISC,   misc,   value);
22519 +               default:
22520 +                       return -EINVAL;
22521 +                       break;
22522 +               }
22523 +       }
22524 +       return 1;
22525 +}
22526 +
22527 +__setup("vsdebug=", vs_debug_setup);
22528 +
22529 +
22530 +
22531 +EXPORT_SYMBOL_GPL(vs_debug_switch);
22532 +EXPORT_SYMBOL_GPL(vs_debug_xid);
22533 +EXPORT_SYMBOL_GPL(vs_debug_nid);
22534 +EXPORT_SYMBOL_GPL(vs_debug_net);
22535 +EXPORT_SYMBOL_GPL(vs_debug_limit);
22536 +EXPORT_SYMBOL_GPL(vs_debug_cres);
22537 +EXPORT_SYMBOL_GPL(vs_debug_dlim);
22538 +EXPORT_SYMBOL_GPL(vs_debug_quota);
22539 +EXPORT_SYMBOL_GPL(vs_debug_cvirt);
22540 +EXPORT_SYMBOL_GPL(vs_debug_space);
22541 +EXPORT_SYMBOL_GPL(vs_debug_perm);
22542 +EXPORT_SYMBOL_GPL(vs_debug_misc);
22543 +
22544 diff -NurpP --minimal linux-4.9.76/kernel/vserver/tag.c linux-4.9.76-vs2.3.9.5/kernel/vserver/tag.c
22545 --- linux-4.9.76/kernel/vserver/tag.c   1970-01-01 00:00:00.000000000 +0000
22546 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/tag.c 2018-01-10 02:50:49.000000000 +0000
22547 @@ -0,0 +1,63 @@
22548 +/*
22549 + *  linux/kernel/vserver/tag.c
22550 + *
22551 + *  Virtual Server: Shallow Tag Space
22552 + *
22553 + *  Copyright (C) 2007  Herbert P?tzl
22554 + *
22555 + *  V0.01  basic implementation
22556 + *
22557 + */
22558 +
22559 +#include <linux/sched.h>
22560 +#include <linux/vserver/debug.h>
22561 +#include <linux/vs_pid.h>
22562 +#include <linux/vs_tag.h>
22563 +
22564 +#include <linux/vserver/tag_cmd.h>
22565 +
22566 +
22567 +int dx_migrate_task(struct task_struct *p, vtag_t tag)
22568 +{
22569 +       if (!p)
22570 +               BUG();
22571 +
22572 +       vxdprintk(VXD_CBIT(tag, 5),
22573 +               "dx_migrate_task(%p[#%d],#%d)", p, p->tag, tag);
22574 +
22575 +       task_lock(p);
22576 +       p->tag = tag;
22577 +       task_unlock(p);
22578 +
22579 +       vxdprintk(VXD_CBIT(tag, 5),
22580 +               "moved task %p into [#%d]", p, tag);
22581 +       return 0;
22582 +}
22583 +
22584 +/* vserver syscall commands below here */
22585 +
22586 +/* taks xid and vx_info functions */
22587 +
22588 +
22589 +int vc_task_tag(uint32_t id)
22590 +{
22591 +       vtag_t tag;
22592 +
22593 +       if (id) {
22594 +               struct task_struct *tsk;
22595 +               rcu_read_lock();
22596 +               tsk = find_task_by_real_pid(id);
22597 +               tag = (tsk) ? tsk->tag : -ESRCH;
22598 +               rcu_read_unlock();
22599 +       } else
22600 +               tag = dx_current_tag();
22601 +       return tag;
22602 +}
22603 +
22604 +
22605 +int vc_tag_migrate(uint32_t tag)
22606 +{
22607 +       return dx_migrate_task(current, tag & 0xFFFF);
22608 +}
22609 +
22610 +
22611 diff -NurpP --minimal linux-4.9.76/kernel/vserver/vci_config.h linux-4.9.76-vs2.3.9.5/kernel/vserver/vci_config.h
22612 --- linux-4.9.76/kernel/vserver/vci_config.h    1970-01-01 00:00:00.000000000 +0000
22613 +++ linux-4.9.76-vs2.3.9.5/kernel/vserver/vci_config.h  2018-01-10 02:50:49.000000000 +0000
22614 @@ -0,0 +1,80 @@
22615 +
22616 +/*  interface version */
22617 +
22618 +#define VCI_VERSION            0x00020308
22619 +
22620 +
22621 +enum {
22622 +       VCI_KCBIT_NO_DYNAMIC = 0,
22623 +
22624 +       VCI_KCBIT_PROC_SECURE = 4,
22625 +       /* VCI_KCBIT_HARDCPU = 5, */
22626 +       /* VCI_KCBIT_IDLELIMIT = 6, */
22627 +       /* VCI_KCBIT_IDLETIME = 7, */
22628 +
22629 +       VCI_KCBIT_COWBL = 8,
22630 +       VCI_KCBIT_FULLCOWBL = 9,
22631 +       VCI_KCBIT_SPACES = 10,
22632 +       VCI_KCBIT_NETV2 = 11,
22633 +       VCI_KCBIT_MEMCG = 12,
22634 +       VCI_KCBIT_MEMCG_SWAP = 13,
22635 +
22636 +       VCI_KCBIT_DEBUG = 16,
22637 +       VCI_KCBIT_HISTORY = 20,
22638 +       VCI_KCBIT_TAGGED = 24,
22639 +       VCI_KCBIT_PPTAG = 28,
22640 +
22641 +       VCI_KCBIT_MORE = 31,
22642 +};
22643 +
22644 +
22645 +static inline uint32_t vci_kernel_config(void)
22646 +{
22647 +       return
22648 +       (1 << VCI_KCBIT_NO_DYNAMIC) |
22649 +
22650 +       /* configured features */
22651 +#ifdef CONFIG_VSERVER_PROC_SECURE
22652 +       (1 << VCI_KCBIT_PROC_SECURE) |
22653 +#endif
22654 +#ifdef CONFIG_VSERVER_COWBL
22655 +       (1 << VCI_KCBIT_COWBL) |
22656 +       (1 << VCI_KCBIT_FULLCOWBL) |
22657 +#endif
22658 +       (1 << VCI_KCBIT_SPACES) |
22659 +       (1 << VCI_KCBIT_NETV2) |
22660 +#ifdef CONFIG_MEMCG
22661 +       (1 << VCI_KCBIT_MEMCG) |
22662 +#endif
22663 +#ifdef CONFIG_MEMCG_SWAP
22664 +       (1 << VCI_KCBIT_MEMCG_SWAP) |
22665 +#endif
22666 +
22667 +       /* debug options */
22668 +#ifdef CONFIG_VSERVER_DEBUG
22669 +       (1 << VCI_KCBIT_DEBUG) |
22670 +#endif
22671 +#ifdef CONFIG_VSERVER_HISTORY
22672 +       (1 << VCI_KCBIT_HISTORY) |
22673 +#endif
22674 +
22675 +       /* inode context tagging */
22676 +#if    defined(CONFIG_TAGGING_NONE)
22677 +       (0 << VCI_KCBIT_TAGGED) |
22678 +#elif  defined(CONFIG_TAGGING_UID16)
22679 +       (1 << VCI_KCBIT_TAGGED) |
22680 +#elif  defined(CONFIG_TAGGING_GID16)
22681 +       (2 << VCI_KCBIT_TAGGED) |
22682 +#elif  defined(CONFIG_TAGGING_ID24)
22683 +       (3 << VCI_KCBIT_TAGGED) |
22684 +#elif  defined(CONFIG_TAGGING_INTERN)
22685 +       (4 << VCI_KCBIT_TAGGED) |
22686 +#elif  defined(CONFIG_TAGGING_RUNTIME)
22687 +       (5 << VCI_KCBIT_TAGGED) |
22688 +#else
22689 +       (7 << VCI_KCBIT_TAGGED) |
22690 +#endif
22691 +       (1 << VCI_KCBIT_PPTAG) |
22692 +       0;
22693 +}
22694 +
22695 diff -NurpP --minimal linux-4.9.76/mm/memcontrol.c linux-4.9.76-vs2.3.9.5/mm/memcontrol.c
22696 --- linux-4.9.76/mm/memcontrol.c        2018-01-13 21:29:01.000000000 +0000
22697 +++ linux-4.9.76-vs2.3.9.5/mm/memcontrol.c      2018-01-10 08:42:06.000000000 +0000
22698 @@ -2825,6 +2825,26 @@ static u64 mem_cgroup_read_u64(struct cg
22699         }
22700  }
22701
22702 +u64 mem_cgroup_mem_usage_pages(struct mem_cgroup *memcg)
22703 +{
22704 +       return mem_cgroup_usage(memcg, false) >> PAGE_SHIFT;
22705 +}
22706 +
22707 +u64 mem_cgroup_mem_limit_pages(struct mem_cgroup *memcg)
22708 +{
22709 +       return (u64)memcg->memory.limit;
22710 +}
22711 +
22712 +u64 mem_cgroup_memsw_usage_pages(struct mem_cgroup *memcg)
22713 +{
22714 +       return mem_cgroup_usage(memcg, true) >> PAGE_SHIFT;
22715 +}
22716 +
22717 +u64 mem_cgroup_memsw_limit_pages(struct mem_cgroup *memcg)
22718 +{
22719 +       return (u64)memcg->memsw.limit;
22720 +}
22721 +
22722  #ifndef CONFIG_SLOB
22723  static int memcg_online_kmem(struct mem_cgroup *memcg)
22724  {
22725 diff -NurpP --minimal linux-4.9.76/mm/oom_kill.c linux-4.9.76-vs2.3.9.5/mm/oom_kill.c
22726 --- linux-4.9.76/mm/oom_kill.c  2018-01-13 21:29:01.000000000 +0000
22727 +++ linux-4.9.76-vs2.3.9.5/mm/oom_kill.c        2018-01-10 08:54:40.000000000 +0000
22728 @@ -38,6 +38,8 @@
22729  #include <linux/kthread.h>
22730  #include <linux/init.h>
22731  #include <linux/mmu_notifier.h>
22732 +#include <linux/reboot.h>
22733 +#include <linux/vs_context.h>
22734
22735  #include <asm/tlb.h>
22736  #include "internal.h"
22737 @@ -142,11 +144,18 @@ static inline bool is_memcg_oom(struct o
22738  static bool oom_unkillable_task(struct task_struct *p,
22739                 struct mem_cgroup *memcg, const nodemask_t *nodemask)
22740  {
22741 -       if (is_global_init(p))
22742 +       unsigned xid = vx_current_xid();
22743 +
22744 +       /* skip the init task, global and per guest */
22745 +       if (task_is_init(p))
22746                 return true;
22747         if (p->flags & PF_KTHREAD)
22748                 return true;
22749
22750 +       /* skip other guest and host processes if oom in guest */
22751 +       if (xid && vx_task_xid(p) != xid)
22752 +               return true;
22753 +
22754         /* When mem_cgroup_out_of_memory() and p is not member of the group */
22755         if (memcg && !task_in_mem_cgroup(p, memcg))
22756                 return true;
22757 @@ -851,8 +860,8 @@ static void oom_kill_process(struct oom_
22758         if (__ratelimit(&oom_rs))
22759                 dump_header(oc, p);
22760
22761 -       pr_err("%s: Kill process %d (%s) score %u or sacrifice child\n",
22762 -               message, task_pid_nr(p), p->comm, points);
22763 +       pr_err("%s: Kill process %d:#%u (%s) score %d or sacrifice child\n",
22764 +               message, task_pid_nr(p), p->xid, p->comm, points);
22765
22766         /*
22767          * If any of p's children has a different mm and is eligible for kill,
22768 @@ -902,8 +911,8 @@ static void oom_kill_process(struct oom_
22769          */
22770         do_send_sig_info(SIGKILL, SEND_SIG_FORCED, victim, true);
22771         mark_oom_victim(victim);
22772 -       pr_err("Killed process %d (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n",
22773 -               task_pid_nr(victim), victim->comm, K(victim->mm->total_vm),
22774 +       pr_err("Killed process %d:%u (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n",
22775 +               task_pid_nr(victim), victim->xid, victim->comm, K(victim->mm->total_vm),
22776                 K(get_mm_counter(victim->mm, MM_ANONPAGES)),
22777                 K(get_mm_counter(victim->mm, MM_FILEPAGES)),
22778                 K(get_mm_counter(victim->mm, MM_SHMEMPAGES)));
22779 @@ -950,6 +959,8 @@ static void oom_kill_process(struct oom_
22780  }
22781  #undef K
22782
22783 +long vs_oom_action(unsigned int);
22784 +
22785  /*
22786   * Determines whether the kernel must panic because of the panic_on_oom sysctl.
22787   */
22788 @@ -1055,7 +1066,12 @@ bool out_of_memory(struct oom_control *o
22789         /* Found nothing?!?! Either we hang forever, or we panic. */
22790         if (!oc->chosen && !is_sysrq_oom(oc) && !is_memcg_oom(oc)) {
22791                 dump_header(oc, NULL);
22792 -               panic("Out of memory and no killable processes...\n");
22793 +
22794 +               /* avoid panic for guest OOM */
22795 +               if (vx_current_xid())
22796 +                       vs_oom_action(LINUX_REBOOT_CMD_OOM);
22797 +               else
22798 +                       panic("Out of memory and no killable processes...\n");
22799         }
22800         if (oc->chosen && oc->chosen != (void *)-1UL) {
22801                 oom_kill_process(oc, !is_memcg_oom(oc) ? "Out of memory" :
22802 diff -NurpP --minimal linux-4.9.76/mm/page_alloc.c linux-4.9.76-vs2.3.9.5/mm/page_alloc.c
22803 --- linux-4.9.76/mm/page_alloc.c        2018-01-13 21:29:01.000000000 +0000
22804 +++ linux-4.9.76-vs2.3.9.5/mm/page_alloc.c      2018-01-10 08:55:35.000000000 +0000
22805 @@ -64,6 +64,8 @@
22806  #include <linux/page_owner.h>
22807  #include <linux/kthread.h>
22808  #include <linux/memcontrol.h>
22809 +#include <linux/vs_base.h>
22810 +#include <linux/vs_limit.h>
22811
22812  #include <asm/sections.h>
22813  #include <asm/tlbflush.h>
22814 @@ -4205,6 +4207,9 @@ void si_meminfo(struct sysinfo *val)
22815         val->totalhigh = totalhigh_pages;
22816         val->freehigh = nr_free_highpages();
22817         val->mem_unit = PAGE_SIZE;
22818 +
22819 +       if (vx_flags(VXF_VIRT_MEM, 0))
22820 +               vx_vsi_meminfo(val);
22821  }
22822
22823  EXPORT_SYMBOL(si_meminfo);
22824 @@ -4239,6 +4244,9 @@ void si_meminfo_node(struct sysinfo *val
22825         val->freehigh = free_highpages;
22826  #endif
22827         val->mem_unit = PAGE_SIZE;
22828 +
22829 +       if (vx_flags(VXF_VIRT_MEM, 0))
22830 +               vx_vsi_meminfo(val);
22831  }
22832  #endif
22833
22834 diff -NurpP --minimal linux-4.9.76/mm/pgtable-generic.c linux-4.9.76-vs2.3.9.5/mm/pgtable-generic.c
22835 --- linux-4.9.76/mm/pgtable-generic.c   2016-12-11 19:17:54.000000000 +0000
22836 +++ linux-4.9.76-vs2.3.9.5/mm/pgtable-generic.c 2018-01-10 02:50:49.000000000 +0000
22837 @@ -6,6 +6,8 @@
22838   *  Copyright (C) 2010  Linus Torvalds
22839   */
22840
22841 +#include <linux/mm.h>
22842 +
22843  #include <linux/pagemap.h>
22844  #include <asm/tlb.h>
22845  #include <asm-generic/pgtable.h>
22846 diff -NurpP --minimal linux-4.9.76/mm/shmem.c linux-4.9.76-vs2.3.9.5/mm/shmem.c
22847 --- linux-4.9.76/mm/shmem.c     2018-01-13 21:29:01.000000000 +0000
22848 +++ linux-4.9.76-vs2.3.9.5/mm/shmem.c   2018-01-10 08:36:49.000000000 +0000
22849 @@ -2785,7 +2785,7 @@ static int shmem_statfs(struct dentry *d
22850  {
22851         struct shmem_sb_info *sbinfo = SHMEM_SB(dentry->d_sb);
22852
22853 -       buf->f_type = TMPFS_MAGIC;
22854 +       buf->f_type = TMPFS_SUPER_MAGIC;
22855         buf->f_bsize = PAGE_SIZE;
22856         buf->f_namelen = NAME_MAX;
22857         if (sbinfo->max_blocks) {
22858 @@ -3606,7 +3606,7 @@ int shmem_fill_super(struct super_block
22859         sb->s_maxbytes = MAX_LFS_FILESIZE;
22860         sb->s_blocksize = PAGE_SIZE;
22861         sb->s_blocksize_bits = PAGE_SHIFT;
22862 -       sb->s_magic = TMPFS_MAGIC;
22863 +       sb->s_magic = TMPFS_SUPER_MAGIC;
22864         sb->s_op = &shmem_ops;
22865         sb->s_time_gran = 1;
22866  #ifdef CONFIG_TMPFS_XATTR
22867 diff -NurpP --minimal linux-4.9.76/mm/slab.c linux-4.9.76-vs2.3.9.5/mm/slab.c
22868 --- linux-4.9.76/mm/slab.c      2018-01-13 21:29:01.000000000 +0000
22869 +++ linux-4.9.76-vs2.3.9.5/mm/slab.c    2018-01-10 02:50:49.000000000 +0000
22870 @@ -307,6 +307,8 @@ static void kmem_cache_node_init(struct
22871  #define STATS_INC_FREEMISS(x)  do { } while (0)
22872  #endif
22873
22874 +#include "slab_vs.h"
22875 +
22876  #if DEBUG
22877
22878  /*
22879 @@ -3341,6 +3343,7 @@ slab_alloc_node(struct kmem_cache *cache
22880         /* ___cache_alloc_node can fall back to other nodes */
22881         ptr = ____cache_alloc_node(cachep, flags, nodeid);
22882    out:
22883 +       vx_slab_alloc(cachep, flags);
22884         local_irq_restore(save_flags);
22885         ptr = cache_alloc_debugcheck_after(cachep, flags, ptr, caller);
22886
22887 @@ -3522,6 +3525,7 @@ void ___cache_free(struct kmem_cache *ca
22888         check_irq_off();
22889         kmemleak_free_recursive(objp, cachep->flags);
22890         objp = cache_free_debugcheck(cachep, objp, caller);
22891 +       vx_slab_free(cachep);
22892
22893         kmemcheck_slab_free(cachep, objp, cachep->object_size);
22894
22895 diff -NurpP --minimal linux-4.9.76/mm/slab_vs.h linux-4.9.76-vs2.3.9.5/mm/slab_vs.h
22896 --- linux-4.9.76/mm/slab_vs.h   1970-01-01 00:00:00.000000000 +0000
22897 +++ linux-4.9.76-vs2.3.9.5/mm/slab_vs.h 2018-01-10 02:50:49.000000000 +0000
22898 @@ -0,0 +1,29 @@
22899 +
22900 +#include <linux/vserver/context.h>
22901 +
22902 +#include <linux/vs_context.h>
22903 +
22904 +static inline
22905 +void vx_slab_alloc(struct kmem_cache *cachep, gfp_t flags)
22906 +{
22907 +       int what = gfp_zone(cachep->allocflags);
22908 +       struct vx_info *vxi = current_vx_info();
22909 +
22910 +       if (!vxi)
22911 +               return;
22912 +
22913 +       atomic_add(cachep->size, &vxi->cacct.slab[what]);
22914 +}
22915 +
22916 +static inline
22917 +void vx_slab_free(struct kmem_cache *cachep)
22918 +{
22919 +       int what = gfp_zone(cachep->allocflags);
22920 +       struct vx_info *vxi = current_vx_info();
22921 +
22922 +       if (!vxi)
22923 +               return;
22924 +
22925 +       atomic_sub(cachep->size, &vxi->cacct.slab[what]);
22926 +}
22927 +
22928 diff -NurpP --minimal linux-4.9.76/mm/swapfile.c linux-4.9.76-vs2.3.9.5/mm/swapfile.c
22929 --- linux-4.9.76/mm/swapfile.c  2018-01-13 21:29:01.000000000 +0000
22930 +++ linux-4.9.76-vs2.3.9.5/mm/swapfile.c        2018-01-10 02:50:49.000000000 +0000
22931 @@ -39,6 +39,7 @@
22932  #include <asm/tlbflush.h>
22933  #include <linux/swapops.h>
22934  #include <linux/swap_cgroup.h>
22935 +#include <linux/vs_base.h>
22936
22937  static bool swap_count_continued(struct swap_info_struct *, pgoff_t,
22938                                  unsigned char);
22939 @@ -2083,6 +2084,16 @@ static int swap_show(struct seq_file *sw
22940
22941         if (si == SEQ_START_TOKEN) {
22942                 seq_puts(swap,"Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n");
22943 +               if (vx_flags(VXF_VIRT_MEM, 0)) {
22944 +                       struct sysinfo si = { 0 };
22945 +
22946 +                       vx_vsi_swapinfo(&si);
22947 +                       if (si.totalswap < (1 << 10))
22948 +                               return 0;
22949 +                       seq_printf(swap, "%s\t\t\t\t\t%s\t%lu\t%lu\t%d\n",
22950 +                               "hdv0", "partition", si.totalswap >> 10,
22951 +                               (si.totalswap - si.freeswap) >> 10, -1);
22952 +               }
22953                 return 0;
22954         }
22955
22956 @@ -2612,6 +2623,8 @@ void si_swapinfo(struct sysinfo *val)
22957         val->freeswap = atomic_long_read(&nr_swap_pages) + nr_to_be_unused;
22958         val->totalswap = total_swap_pages + nr_to_be_unused;
22959         spin_unlock(&swap_lock);
22960 +       if (vx_flags(VXF_VIRT_MEM, 0))
22961 +               vx_vsi_swapinfo(val);
22962  }
22963
22964  /*
22965 diff -NurpP --minimal linux-4.9.76/net/bridge/br_multicast.c linux-4.9.76-vs2.3.9.5/net/bridge/br_multicast.c
22966 --- linux-4.9.76/net/bridge/br_multicast.c      2016-12-11 19:17:54.000000000 +0000
22967 +++ linux-4.9.76-vs2.3.9.5/net/bridge/br_multicast.c    2018-01-10 02:50:49.000000000 +0000
22968 @@ -465,7 +465,7 @@ static struct sk_buff *br_ip6_multicast_
22969         ip6h->hop_limit = 1;
22970         ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1));
22971         if (ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0,
22972 -                              &ip6h->saddr)) {
22973 +                              &ip6h->saddr, NULL)) {
22974                 kfree_skb(skb);
22975                 br->has_ipv6_addr = 0;
22976                 return NULL;
22977 diff -NurpP --minimal linux-4.9.76/net/core/dev.c linux-4.9.76-vs2.3.9.5/net/core/dev.c
22978 --- linux-4.9.76/net/core/dev.c 2018-01-13 21:29:01.000000000 +0000
22979 +++ linux-4.9.76-vs2.3.9.5/net/core/dev.c       2018-01-10 02:50:49.000000000 +0000
22980 @@ -126,6 +126,7 @@
22981  #include <linux/in.h>
22982  #include <linux/jhash.h>
22983  #include <linux/random.h>
22984 +#include <linux/vs_inet.h>
22985  #include <trace/events/napi.h>
22986  #include <trace/events/net.h>
22987  #include <trace/events/skb.h>
22988 @@ -730,7 +731,8 @@ struct net_device *__dev_get_by_name(str
22989         struct hlist_head *head = dev_name_hash(net, name);
22990
22991         hlist_for_each_entry(dev, head, name_hlist)
22992 -               if (!strncmp(dev->name, name, IFNAMSIZ))
22993 +               if (!strncmp(dev->name, name, IFNAMSIZ) &&
22994 +                   nx_dev_visible(current_nx_info(), dev))
22995                         return dev;
22996
22997         return NULL;
22998 @@ -755,7 +757,8 @@ struct net_device *dev_get_by_name_rcu(s
22999         struct hlist_head *head = dev_name_hash(net, name);
23000
23001         hlist_for_each_entry_rcu(dev, head, name_hlist)
23002 -               if (!strncmp(dev->name, name, IFNAMSIZ))
23003 +               if (!strncmp(dev->name, name, IFNAMSIZ) &&
23004 +                   nx_dev_visible(current_nx_info(), dev))
23005                         return dev;
23006
23007         return NULL;
23008 @@ -805,7 +808,8 @@ struct net_device *__dev_get_by_index(st
23009         struct hlist_head *head = dev_index_hash(net, ifindex);
23010
23011         hlist_for_each_entry(dev, head, index_hlist)
23012 -               if (dev->ifindex == ifindex)
23013 +               if ((dev->ifindex == ifindex) &&
23014 +                   nx_dev_visible(current_nx_info(), dev))
23015                         return dev;
23016
23017         return NULL;
23018 @@ -823,7 +827,7 @@ EXPORT_SYMBOL(__dev_get_by_index);
23019   *     about locking. The caller must hold RCU lock.
23020   */
23021
23022 -struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
23023 +struct net_device *dev_get_by_index_real_rcu(struct net *net, int ifindex)
23024  {
23025         struct net_device *dev;
23026         struct hlist_head *head = dev_index_hash(net, ifindex);
23027 @@ -834,6 +838,16 @@ struct net_device *dev_get_by_index_rcu(
23028
23029         return NULL;
23030  }
23031 +EXPORT_SYMBOL(dev_get_by_index_real_rcu);
23032 +
23033 +struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
23034 +{
23035 +       struct net_device *dev = dev_get_by_index_real_rcu(net, ifindex);
23036 +
23037 +       if (nx_dev_visible(current_nx_info(), dev))
23038 +               return dev;
23039 +       return NULL;
23040 +}
23041  EXPORT_SYMBOL(dev_get_by_index_rcu);
23042
23043
23044 @@ -916,7 +930,8 @@ struct net_device *dev_getbyhwaddr_rcu(s
23045
23046         for_each_netdev_rcu(net, dev)
23047                 if (dev->type == type &&
23048 -                   !memcmp(dev->dev_addr, ha, dev->addr_len))
23049 +                   !memcmp(dev->dev_addr, ha, dev->addr_len) &&
23050 +                   nx_dev_visible(current_nx_info(), dev))
23051                         return dev;
23052
23053         return NULL;
23054 @@ -928,9 +943,11 @@ struct net_device *__dev_getfirstbyhwtyp
23055         struct net_device *dev;
23056
23057         ASSERT_RTNL();
23058 -       for_each_netdev(net, dev)
23059 -               if (dev->type == type)
23060 +       for_each_netdev(net, dev) {
23061 +               if ((dev->type == type) &&
23062 +                   nx_dev_visible(current_nx_info(), dev))
23063                         return dev;
23064 +       }
23065
23066         return NULL;
23067  }
23068 @@ -942,7 +959,8 @@ struct net_device *dev_getfirstbyhwtype(
23069
23070         rcu_read_lock();
23071         for_each_netdev_rcu(net, dev)
23072 -               if (dev->type == type) {
23073 +               if ((dev->type == type) &&
23074 +                   nx_dev_visible(current_nx_info(), dev)) {
23075                         dev_hold(dev);
23076                         ret = dev;
23077                         break;
23078 @@ -972,7 +990,8 @@ struct net_device *__dev_get_by_flags(st
23079
23080         ret = NULL;
23081         for_each_netdev(net, dev) {
23082 -               if (((dev->flags ^ if_flags) & mask) == 0) {
23083 +               if ((((dev->flags ^ if_flags) & mask) == 0) &&
23084 +                       nx_dev_visible(current_nx_info(), dev)) {
23085                         ret = dev;
23086                         break;
23087                 }
23088 @@ -1050,6 +1069,8 @@ static int __dev_alloc_name(struct net *
23089                                 continue;
23090                         if (i < 0 || i >= max_netdevices)
23091                                 continue;
23092 +                       if (!nx_dev_visible(current_nx_info(), d))
23093 +                               continue;
23094
23095                         /*  avoid cases where sscanf is not exact inverse of printf */
23096                         snprintf(buf, IFNAMSIZ, name, i);
23097 diff -NurpP --minimal linux-4.9.76/net/core/net-procfs.c linux-4.9.76-vs2.3.9.5/net/core/net-procfs.c
23098 --- linux-4.9.76/net/core/net-procfs.c  2016-12-11 19:17:54.000000000 +0000
23099 +++ linux-4.9.76-vs2.3.9.5/net/core/net-procfs.c        2018-01-10 02:50:49.000000000 +0000
23100 @@ -1,6 +1,7 @@
23101  #include <linux/netdevice.h>
23102  #include <linux/proc_fs.h>
23103  #include <linux/seq_file.h>
23104 +#include <linux/vs_inet.h>
23105  #include <net/wext.h>
23106
23107  #define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
23108 @@ -77,8 +78,13 @@ static void dev_seq_stop(struct seq_file
23109  static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
23110  {
23111         struct rtnl_link_stats64 temp;
23112 -       const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
23113 +       const struct rtnl_link_stats64 *stats;
23114 +
23115 +       /* device visible inside network context? */
23116 +       if (!nx_dev_visible(current_nx_info(), dev))
23117 +               return;
23118
23119 +       stats = dev_get_stats(dev, &temp);
23120         seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
23121                    "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
23122                    dev->name, stats->rx_bytes, stats->rx_packets,
23123 diff -NurpP --minimal linux-4.9.76/net/core/rtnetlink.c linux-4.9.76-vs2.3.9.5/net/core/rtnetlink.c
23124 --- linux-4.9.76/net/core/rtnetlink.c   2018-01-13 21:29:02.000000000 +0000
23125 +++ linux-4.9.76-vs2.3.9.5/net/core/rtnetlink.c 2018-01-10 02:50:49.000000000 +0000
23126 @@ -1615,6 +1615,8 @@ static int rtnl_dump_ifinfo(struct sk_bu
23127                                 goto cont;
23128                         if (idx < s_idx)
23129                                 goto cont;
23130 +                       if (!nx_dev_visible(skb->sk->sk_nx_info, dev))
23131 +                               continue;
23132                         err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
23133                                                NETLINK_CB(cb->skb).portid,
23134                                                cb->nlh->nlmsg_seq, 0,
23135 @@ -2811,6 +2813,9 @@ void rtmsg_ifinfo(int type, struct net_d
23136  {
23137         struct sk_buff *skb;
23138
23139 +       if (!nx_dev_visible(current_nx_info(), dev))
23140 +               return;
23141 +
23142         if (dev->reg_state != NETREG_REGISTERED)
23143                 return;
23144
23145 diff -NurpP --minimal linux-4.9.76/net/core/sock.c linux-4.9.76-vs2.3.9.5/net/core/sock.c
23146 --- linux-4.9.76/net/core/sock.c        2018-01-13 21:29:02.000000000 +0000
23147 +++ linux-4.9.76-vs2.3.9.5/net/core/sock.c      2018-01-13 00:48:01.000000000 +0000
23148 @@ -135,6 +135,10 @@
23149
23150  #include <linux/filter.h>
23151  #include <net/sock_reuseport.h>
23152 +#include <linux/vs_socket.h>
23153 +#include <linux/vs_limit.h>
23154 +#include <linux/vs_context.h>
23155 +#include <linux/vs_network.h>
23156
23157  #include <trace/events/sock.h>
23158
23159 @@ -1339,6 +1343,8 @@ static struct sock *sk_prot_alloc(struct
23160                         goto out_free_sec;
23161                 sk_tx_queue_clear(sk);
23162         }
23163 +               sock_vx_init(sk);
23164 +               sock_nx_init(sk);
23165
23166         return sk;
23167
23168 @@ -1444,6 +1450,11 @@ static void __sk_destruct(struct rcu_hea
23169         put_pid(sk->sk_peer_pid);
23170         if (likely(sk->sk_net_refcnt))
23171                 put_net(sock_net(sk));
23172 +       vx_sock_dec(sk);
23173 +       clr_vx_info(&sk->sk_vx_info);
23174 +       sk->sk_xid = -1;
23175 +       clr_nx_info(&sk->sk_nx_info);
23176 +       sk->sk_nid = -1;
23177         sk_prot_free(sk->sk_prot_creator, sk);
23178  }
23179
23180 @@ -1498,6 +1509,8 @@ struct sock *sk_clone_lock(const struct
23181                 /* SANITY */
23182                 if (likely(newsk->sk_net_refcnt))
23183                         get_net(sock_net(newsk));
23184 +               sock_vx_init(newsk);
23185 +               sock_nx_init(newsk);
23186                 sk_node_init(&newsk->sk_node);
23187                 sock_lock_init(newsk);
23188                 bh_lock_sock(newsk);
23189 @@ -1568,6 +1581,12 @@ struct sock *sk_clone_lock(const struct
23190                 smp_wmb();
23191                 atomic_set(&newsk->sk_refcnt, 2);
23192
23193 +               set_vx_info(&newsk->sk_vx_info, sk->sk_vx_info);
23194 +               newsk->sk_xid = sk->sk_xid;
23195 +               vx_sock_inc(newsk);
23196 +               set_nx_info(&newsk->sk_nx_info, sk->sk_nx_info);
23197 +               newsk->sk_nid = sk->sk_nid;
23198 +
23199                 /*
23200                  * Increment the counter in the same struct proto as the master
23201                  * sock (sk_refcnt_debug_inc uses newsk->sk_prot->socks, that
23202 @@ -2468,6 +2487,12 @@ void sock_init_data(struct socket *sock,
23203
23204         sk->sk_stamp = ktime_set(-1L, 0);
23205
23206 +       set_vx_info(&sk->sk_vx_info, current_vx_info());
23207 +       sk->sk_xid = vx_current_xid();
23208 +       vx_sock_inc(sk);
23209 +       set_nx_info(&sk->sk_nx_info, current_nx_info());
23210 +       sk->sk_nid = nx_current_nid();
23211 +
23212  #ifdef CONFIG_NET_RX_BUSY_POLL
23213         sk->sk_napi_id          =       0;
23214         sk->sk_ll_usec          =       sysctl_net_busy_read;
23215 diff -NurpP --minimal linux-4.9.76/net/ipv4/af_inet.c linux-4.9.76-vs2.3.9.5/net/ipv4/af_inet.c
23216 --- linux-4.9.76/net/ipv4/af_inet.c     2018-01-13 21:29:02.000000000 +0000
23217 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/af_inet.c   2018-01-10 02:50:49.000000000 +0000
23218 @@ -303,10 +303,15 @@ lookup_protocol:
23219         }
23220
23221         err = -EPERM;
23222 +       if ((protocol == IPPROTO_ICMP) &&
23223 +               nx_capable(CAP_NET_RAW, NXC_RAW_ICMP))
23224 +               goto override;
23225 +
23226         if (sock->type == SOCK_RAW && !kern &&
23227             !ns_capable(net->user_ns, CAP_NET_RAW))
23228                 goto out_rcu_unlock;
23229
23230 +override:
23231         sock->ops = answer->ops;
23232         answer_prot = answer->prot;
23233         answer_flags = answer->flags;
23234 @@ -424,6 +429,7 @@ int inet_bind(struct socket *sock, struc
23235         struct sock *sk = sock->sk;
23236         struct inet_sock *inet = inet_sk(sk);
23237         struct net *net = sock_net(sk);
23238 +       struct nx_v4_sock_addr nsa;
23239         unsigned short snum;
23240         int chk_addr_ret;
23241         u32 tb_id = RT_TABLE_LOCAL;
23242 @@ -449,7 +455,11 @@ int inet_bind(struct socket *sock, struc
23243         }
23244
23245         tb_id = l3mdev_fib_table_by_index(net, sk->sk_bound_dev_if) ? : tb_id;
23246 -       chk_addr_ret = inet_addr_type_table(net, addr->sin_addr.s_addr, tb_id);
23247 +       err = v4_map_sock_addr(inet, addr, &nsa);
23248 +       if (err)
23249 +               goto out;
23250 +
23251 +       chk_addr_ret = inet_addr_type_table(net, nsa.saddr, tb_id);
23252
23253         /* Not specified by any standard per-se, however it breaks too
23254          * many applications when removed.  It is unfortunate since
23255 @@ -461,7 +471,7 @@ int inet_bind(struct socket *sock, struc
23256         err = -EADDRNOTAVAIL;
23257         if (!net->ipv4.sysctl_ip_nonlocal_bind &&
23258             !(inet->freebind || inet->transparent) &&
23259 -           addr->sin_addr.s_addr != htonl(INADDR_ANY) &&
23260 +           nsa.saddr != htonl(INADDR_ANY) &&
23261             chk_addr_ret != RTN_LOCAL &&
23262             chk_addr_ret != RTN_MULTICAST &&
23263             chk_addr_ret != RTN_BROADCAST)
23264 @@ -487,7 +497,7 @@ int inet_bind(struct socket *sock, struc
23265         if (sk->sk_state != TCP_CLOSE || inet->inet_num)
23266                 goto out_release_sock;
23267
23268 -       inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
23269 +       v4_set_sock_addr(inet, &nsa);
23270         if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
23271                 inet->inet_saddr = 0;  /* Use device */
23272
23273 @@ -706,11 +716,13 @@ int inet_getname(struct socket *sock, st
23274                      peer == 1))
23275                         return -ENOTCONN;
23276                 sin->sin_port = inet->inet_dport;
23277 -               sin->sin_addr.s_addr = inet->inet_daddr;
23278 +               sin->sin_addr.s_addr =
23279 +                       nx_map_sock_lback(sk->sk_nx_info, inet->inet_daddr);
23280         } else {
23281                 __be32 addr = inet->inet_rcv_saddr;
23282                 if (!addr)
23283                         addr = inet->inet_saddr;
23284 +               addr = nx_map_sock_lback(sk->sk_nx_info, addr);
23285                 sin->sin_port = inet->inet_sport;
23286                 sin->sin_addr.s_addr = addr;
23287         }
23288 @@ -894,6 +906,7 @@ static int inet_compat_ioctl(struct sock
23289         return err;
23290  }
23291  #endif
23292 +#include <linux/vs_limit.h>
23293
23294  const struct proto_ops inet_stream_ops = {
23295         .family            = PF_INET,
23296 diff -NurpP --minimal linux-4.9.76/net/ipv4/arp.c linux-4.9.76-vs2.3.9.5/net/ipv4/arp.c
23297 --- linux-4.9.76/net/ipv4/arp.c 2018-01-13 21:29:02.000000000 +0000
23298 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/arp.c       2018-01-10 02:50:49.000000000 +0000
23299 @@ -1303,6 +1303,7 @@ static void arp_format_neigh_entry(struc
23300         struct net_device *dev = n->dev;
23301         int hatype = dev->type;
23302
23303 +       /* FIXME: check for network context */
23304         read_lock(&n->lock);
23305         /* Convert hardware address to XX:XX:XX:XX ... form. */
23306  #if IS_ENABLED(CONFIG_AX25)
23307 @@ -1334,6 +1335,7 @@ static void arp_format_pneigh_entry(stru
23308         int hatype = dev ? dev->type : 0;
23309         char tbuf[16];
23310
23311 +       /* FIXME: check for network context */
23312         sprintf(tbuf, "%pI4", n->key);
23313         seq_printf(seq, "%-16s 0x%-10x0x%-10x%s     *        %s\n",
23314                    tbuf, hatype, ATF_PUBL | ATF_PERM, "00:00:00:00:00:00",
23315 diff -NurpP --minimal linux-4.9.76/net/ipv4/devinet.c linux-4.9.76-vs2.3.9.5/net/ipv4/devinet.c
23316 --- linux-4.9.76/net/ipv4/devinet.c     2018-01-13 21:29:02.000000000 +0000
23317 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/devinet.c   2018-01-10 02:50:49.000000000 +0000
23318 @@ -538,6 +538,7 @@ struct in_device *inetdev_by_index(struc
23319  }
23320  EXPORT_SYMBOL(inetdev_by_index);
23321
23322 +
23323  /* Called only from RTNL semaphored context. No locks. */
23324
23325  struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,
23326 @@ -992,6 +993,8 @@ int devinet_ioctl(struct net *net, unsig
23327
23328         in_dev = __in_dev_get_rtnl(dev);
23329         if (in_dev) {
23330 +               struct nx_info *nxi = current_nx_info();
23331 +
23332                 if (tryaddrmatch) {
23333                         /* Matthias Andree */
23334                         /* compare label and address (4.4BSD style) */
23335 @@ -1000,6 +1003,8 @@ int devinet_ioctl(struct net *net, unsig
23336                            This is checked above. */
23337                         for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
23338                              ifap = &ifa->ifa_next) {
23339 +                               if (!nx_v4_ifa_visible(nxi, ifa))
23340 +                                       continue;
23341                                 if (!strcmp(ifr.ifr_name, ifa->ifa_label) &&
23342                                     sin_orig.sin_addr.s_addr ==
23343                                                         ifa->ifa_local) {
23344 @@ -1012,9 +1017,12 @@ int devinet_ioctl(struct net *net, unsig
23345                    comparing just the label */
23346                 if (!ifa) {
23347                         for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
23348 -                            ifap = &ifa->ifa_next)
23349 +                            ifap = &ifa->ifa_next) {
23350 +                               if (!nx_v4_ifa_visible(nxi, ifa))
23351 +                                       continue;
23352                                 if (!strcmp(ifr.ifr_name, ifa->ifa_label))
23353                                         break;
23354 +                       }
23355                 }
23356         }
23357
23358 @@ -1168,6 +1176,8 @@ static int inet_gifconf(struct net_devic
23359                 goto out;
23360
23361         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
23362 +               if (!nx_v4_ifa_visible(current_nx_info(), ifa))
23363 +                       continue;
23364                 if (!buf) {
23365                         done += sizeof(ifr);
23366                         continue;
23367 @@ -1595,6 +1605,7 @@ static int inet_dump_ifaddr(struct sk_bu
23368         struct net_device *dev;
23369         struct in_device *in_dev;
23370         struct in_ifaddr *ifa;
23371 +       struct sock *sk = skb->sk;
23372         struct hlist_head *head;
23373
23374         s_h = cb->args[0];
23375 @@ -1618,6 +1629,8 @@ static int inet_dump_ifaddr(struct sk_bu
23376
23377                         for (ifa = in_dev->ifa_list, ip_idx = 0; ifa;
23378                              ifa = ifa->ifa_next, ip_idx++) {
23379 +                       if (sk && !nx_v4_ifa_visible(sk->sk_nx_info, ifa))
23380 +                               continue;
23381                                 if (ip_idx < s_ip_idx)
23382                                         continue;
23383                                 if (inet_fill_ifaddr(skb, ifa,
23384 diff -NurpP --minimal linux-4.9.76/net/ipv4/fib_trie.c linux-4.9.76-vs2.3.9.5/net/ipv4/fib_trie.c
23385 --- linux-4.9.76/net/ipv4/fib_trie.c    2018-01-13 21:29:02.000000000 +0000
23386 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/fib_trie.c  2018-01-10 02:50:49.000000000 +0000
23387 @@ -2617,6 +2617,7 @@ static int fib_route_seq_show(struct seq
23388
23389                 seq_setwidth(seq, 127);
23390
23391 +               /* FIXME: check for network context? */
23392                 if (fi)
23393                         seq_printf(seq,
23394                                    "%s\t%08X\t%08X\t%04X\t%d\t%u\t"
23395 diff -NurpP --minimal linux-4.9.76/net/ipv4/inet_connection_sock.c linux-4.9.76-vs2.3.9.5/net/ipv4/inet_connection_sock.c
23396 --- linux-4.9.76/net/ipv4/inet_connection_sock.c        2018-01-13 21:29:02.000000000 +0000
23397 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/inet_connection_sock.c      2018-01-13 20:20:30.000000000 +0000
23398 @@ -16,6 +16,7 @@
23399  #include <linux/module.h>
23400  #include <linux/jhash.h>
23401
23402 +#include <net/addrconf.h>
23403  #include <net/inet_connection_sock.h>
23404  #include <net/inet_hashtables.h>
23405  #include <net/inet_timewait_sock.h>
23406 @@ -44,6 +45,7 @@ void inet_get_local_port_range(struct ne
23407  }
23408  EXPORT_SYMBOL(inet_get_local_port_range);
23409
23410 +
23411  int inet_csk_bind_conflict(const struct sock *sk,
23412                            const struct inet_bind_bucket *tb, bool relax)
23413  {
23414 @@ -72,15 +74,13 @@ int inet_csk_bind_conflict(const struct
23415                              (sk2->sk_state != TCP_TIME_WAIT &&
23416                              !uid_eq(uid, sock_i_uid(sk2))))) {
23417
23418 -                               if (!sk2->sk_rcv_saddr || !sk->sk_rcv_saddr ||
23419 -                                   sk2->sk_rcv_saddr == sk->sk_rcv_saddr)
23420 +                               if (ipv4_rcv_saddr_equal(sk, sk2, true))
23421                                         break;
23422                         }
23423                         if (!relax && reuse && sk2->sk_reuse &&
23424                             sk2->sk_state != TCP_LISTEN) {
23425
23426 -                               if (!sk2->sk_rcv_saddr || !sk->sk_rcv_saddr ||
23427 -                                   sk2->sk_rcv_saddr == sk->sk_rcv_saddr)
23428 +                               if (ipv4_rcv_saddr_equal(sk, sk2, true))
23429                                         break;
23430                         }
23431                 }
23432 diff -NurpP --minimal linux-4.9.76/net/ipv4/inet_diag.c linux-4.9.76-vs2.3.9.5/net/ipv4/inet_diag.c
23433 --- linux-4.9.76/net/ipv4/inet_diag.c   2016-12-11 19:17:54.000000000 +0000
23434 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/inet_diag.c 2018-01-10 02:50:49.000000000 +0000
23435 @@ -31,6 +31,8 @@
23436
23437  #include <linux/inet.h>
23438  #include <linux/stddef.h>
23439 +#include <linux/vs_network.h>
23440 +#include <linux/vs_inet.h>
23441
23442  #include <linux/inet_diag.h>
23443  #include <linux/sock_diag.h>
23444 @@ -879,6 +881,8 @@ void inet_diag_dump_icsk(struct inet_has
23445                                 if (!net_eq(sock_net(sk), net))
23446                                         continue;
23447
23448 +                               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23449 +                                       continue;
23450                                 if (num < s_num) {
23451                                         num++;
23452                                         continue;
23453 @@ -941,6 +945,8 @@ skip_listen_ht:
23454
23455                         if (!net_eq(sock_net(sk), net))
23456                                 continue;
23457 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23458 +                               continue;
23459                         if (num < s_num)
23460                                 goto next_normal;
23461                         state = (sk->sk_state == TCP_TIME_WAIT) ?
23462 diff -NurpP --minimal linux-4.9.76/net/ipv4/inet_hashtables.c linux-4.9.76-vs2.3.9.5/net/ipv4/inet_hashtables.c
23463 --- linux-4.9.76/net/ipv4/inet_hashtables.c     2018-01-13 21:29:02.000000000 +0000
23464 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/inet_hashtables.c   2018-01-10 02:50:49.000000000 +0000
23465 @@ -24,6 +24,7 @@
23466  #include <net/inet_connection_sock.h>
23467  #include <net/inet_hashtables.h>
23468  #include <net/secure_seq.h>
23469 +#include <net/route.h>
23470  #include <net/ip.h>
23471  #include <net/tcp.h>
23472  #include <net/sock_reuseport.h>
23473 @@ -186,6 +187,11 @@ static inline int compute_score(struct s
23474                         if (rcv_saddr != daddr)
23475                                 return -1;
23476                         score += 4;
23477 +               } else {
23478 +                       /* block non nx_info ips */
23479 +                       if (!v4_addr_in_nx_info(sk->sk_nx_info,
23480 +                               daddr, NXA_MASK_BIND))
23481 +                               return -1;
23482                 }
23483                 if (sk->sk_bound_dev_if || exact_dif) {
23484                         if (sk->sk_bound_dev_if != dif)
23485 @@ -300,6 +306,7 @@ begin:
23486                         goto found;
23487                 }
23488         }
23489 +
23490         /*
23491          * if the nulls value we got at the end of this lookup is
23492          * not the expected one, we must restart lookup.
23493 diff -NurpP --minimal linux-4.9.76/net/ipv4/netfilter.c linux-4.9.76-vs2.3.9.5/net/ipv4/netfilter.c
23494 --- linux-4.9.76/net/ipv4/netfilter.c   2018-01-13 21:29:02.000000000 +0000
23495 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/netfilter.c 2018-01-10 02:50:49.000000000 +0000
23496 @@ -11,7 +11,7 @@
23497  #include <linux/skbuff.h>
23498  #include <linux/gfp.h>
23499  #include <linux/export.h>
23500 -#include <net/route.h>
23501 +// #include <net/route.h>
23502  #include <net/xfrm.h>
23503  #include <net/ip.h>
23504  #include <net/netfilter/nf_queue.h>
23505 diff -NurpP --minimal linux-4.9.76/net/ipv4/raw.c linux-4.9.76-vs2.3.9.5/net/ipv4/raw.c
23506 --- linux-4.9.76/net/ipv4/raw.c 2018-01-13 21:29:02.000000000 +0000
23507 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/raw.c       2018-01-10 02:50:49.000000000 +0000
23508 @@ -128,7 +128,7 @@ static struct sock *__raw_v4_lookup(stru
23509
23510                 if (net_eq(sock_net(sk), net) && inet->inet_num == num  &&
23511                     !(inet->inet_daddr && inet->inet_daddr != raddr)    &&
23512 -                   !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
23513 +                   v4_sock_addr_match(sk->sk_nx_info, inet, laddr)     &&
23514                     !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
23515                         goto found; /* gotcha */
23516         }
23517 @@ -418,6 +418,12 @@ static int raw_send_hdrinc(struct sock *
23518                                 skb_transport_header(skb))->type);
23519         }
23520
23521 +       err = -EPERM;
23522 +       if (!nx_check(0, VS_ADMIN) && !capable(CAP_NET_RAW) &&
23523 +               sk->sk_nx_info &&
23524 +               !v4_addr_in_nx_info(sk->sk_nx_info, iph->saddr, NXA_MASK_BIND))
23525 +               goto error_free;
23526 +
23527         err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT,
23528                       net, sk, skb, NULL, rt->dst.dev,
23529                       dst_output);
23530 @@ -623,6 +629,16 @@ static int raw_sendmsg(struct sock *sk,
23531                         goto done;
23532         }
23533
23534 +       if (sk->sk_nx_info) {
23535 +               rt = ip_v4_find_src(sock_net(sk), sk->sk_nx_info, &fl4);
23536 +               if (IS_ERR(rt)) {
23537 +                       err = PTR_ERR(rt);
23538 +                       rt = NULL;
23539 +                       goto done;
23540 +               }
23541 +               ip_rt_put(rt);
23542 +       }
23543 +
23544         security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
23545         rt = ip_route_output_flow(net, &fl4, sk);
23546         if (IS_ERR(rt)) {
23547 @@ -701,17 +717,19 @@ static int raw_bind(struct sock *sk, str
23548  {
23549         struct inet_sock *inet = inet_sk(sk);
23550         struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
23551 +       struct nx_v4_sock_addr nsa = { 0 };
23552         int ret = -EINVAL;
23553         int chk_addr_ret;
23554
23555         if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
23556                 goto out;
23557 -       chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
23558 +       v4_map_sock_addr(inet, addr, &nsa);
23559 +       chk_addr_ret = inet_addr_type(sock_net(sk), nsa.saddr);
23560         ret = -EADDRNOTAVAIL;
23561 -       if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
23562 +       if (nsa.saddr && chk_addr_ret != RTN_LOCAL &&
23563             chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
23564                 goto out;
23565 -       inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
23566 +       v4_set_sock_addr(inet, &nsa);
23567         if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
23568                 inet->inet_saddr = 0;  /* Use device */
23569         sk_dst_reset(sk);
23570 @@ -760,7 +778,8 @@ static int raw_recvmsg(struct sock *sk,
23571         /* Copy the address. */
23572         if (sin) {
23573                 sin->sin_family = AF_INET;
23574 -               sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
23575 +               sin->sin_addr.s_addr =
23576 +                       nx_map_sock_lback(sk->sk_nx_info, ip_hdr(skb)->saddr);
23577                 sin->sin_port = 0;
23578                 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
23579                 *addr_len = sizeof(*sin);
23580 @@ -956,7 +975,8 @@ static struct sock *raw_get_first(struct
23581         for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
23582                         ++state->bucket) {
23583                 sk_for_each(sk, &state->h->ht[state->bucket])
23584 -                       if (sock_net(sk) == seq_file_net(seq))
23585 +                       if ((sock_net(sk) == seq_file_net(seq)) &&
23586 +                           nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23587                                 goto found;
23588         }
23589         sk = NULL;
23590 @@ -972,7 +992,8 @@ static struct sock *raw_get_next(struct
23591                 sk = sk_next(sk);
23592  try_again:
23593                 ;
23594 -       } while (sk && sock_net(sk) != seq_file_net(seq));
23595 +       } while (sk && ((sock_net(sk) != seq_file_net(seq)) ||
23596 +               !nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT)));
23597
23598         if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
23599                 sk = sk_head(&state->h->ht[state->bucket]);
23600 diff -NurpP --minimal linux-4.9.76/net/ipv4/route.c linux-4.9.76-vs2.3.9.5/net/ipv4/route.c
23601 --- linux-4.9.76/net/ipv4/route.c       2018-01-13 21:29:02.000000000 +0000
23602 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/route.c     2018-01-10 02:50:49.000000000 +0000
23603 @@ -2238,7 +2238,7 @@ struct rtable *__ip_route_output_key_has
23604
23605
23606         if (fl4->flowi4_oif) {
23607 -               dev_out = dev_get_by_index_rcu(net, fl4->flowi4_oif);
23608 +               dev_out = dev_get_by_index_real_rcu(net, fl4->flowi4_oif);
23609                 rth = ERR_PTR(-ENODEV);
23610                 if (!dev_out)
23611                         goto out;
23612 diff -NurpP --minimal linux-4.9.76/net/ipv4/tcp.c linux-4.9.76-vs2.3.9.5/net/ipv4/tcp.c
23613 --- linux-4.9.76/net/ipv4/tcp.c 2018-01-13 21:29:02.000000000 +0000
23614 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/tcp.c       2018-01-10 02:50:49.000000000 +0000
23615 @@ -269,6 +269,7 @@
23616  #include <linux/err.h>
23617  #include <linux/time.h>
23618  #include <linux/slab.h>
23619 +#include <linux/in.h>
23620
23621  #include <net/icmp.h>
23622  #include <net/inet_common.h>
23623 diff -NurpP --minimal linux-4.9.76/net/ipv4/tcp_ipv4.c linux-4.9.76-vs2.3.9.5/net/ipv4/tcp_ipv4.c
23624 --- linux-4.9.76/net/ipv4/tcp_ipv4.c    2018-01-13 21:29:02.000000000 +0000
23625 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/tcp_ipv4.c  2018-01-10 02:50:49.000000000 +0000
23626 @@ -1982,6 +1982,11 @@ static void *established_get_first(struc
23627
23628                 spin_lock_bh(lock);
23629                 sk_nulls_for_each(sk, node, &tcp_hashinfo.ehash[st->bucket].chain) {
23630 +                       vxdprintk(VXD_CBIT(net, 6),
23631 +                               "sk,egf: %p [#%d] (from %d)",
23632 +                               sk, sk->sk_nid, nx_current_nid());
23633 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23634 +                               continue;
23635                         if (sk->sk_family != st->family ||
23636                             !net_eq(sock_net(sk), net)) {
23637                                 continue;
23638 @@ -2008,6 +2013,11 @@ static void *established_get_next(struct
23639         sk = sk_nulls_next(sk);
23640
23641         sk_nulls_for_each_from(sk, node) {
23642 +               vxdprintk(VXD_CBIT(net, 6),
23643 +                       "sk,egn: %p [#%d] (from %d)",
23644 +                       sk, sk->sk_nid, nx_current_nid());
23645 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23646 +                       continue;
23647                 if (sk->sk_family == st->family && net_eq(sock_net(sk), net))
23648                         return sk;
23649         }
23650 @@ -2199,9 +2209,9 @@ static void get_openreq4(const struct re
23651         seq_printf(f, "%4d: %08X:%04X %08X:%04X"
23652                 " %02X %08X:%08X %02X:%08lX %08X %5u %8d %u %d %pK",
23653                 i,
23654 -               ireq->ir_loc_addr,
23655 +               nx_map_sock_lback(current_nx_info(), ireq->ir_loc_addr),
23656                 ireq->ir_num,
23657 -               ireq->ir_rmt_addr,
23658 +               nx_map_sock_lback(current_nx_info(), ireq->ir_rmt_addr),
23659                 ntohs(ireq->ir_rmt_port),
23660                 TCP_SYN_RECV,
23661                 0, 0, /* could print option size, but that is af dependent. */
23662 @@ -2224,8 +2234,8 @@ static void get_tcp4_sock(struct sock *s
23663         const struct inet_connection_sock *icsk = inet_csk(sk);
23664         const struct inet_sock *inet = inet_sk(sk);
23665         const struct fastopen_queue *fastopenq = &icsk->icsk_accept_queue.fastopenq;
23666 -       __be32 dest = inet->inet_daddr;
23667 -       __be32 src = inet->inet_rcv_saddr;
23668 +       __be32 dest = nx_map_sock_lback(current_nx_info(), inet->inet_daddr);
23669 +       __be32 src = nx_map_sock_lback(current_nx_info(), inet->inet_rcv_saddr);
23670         __u16 destp = ntohs(inet->inet_dport);
23671         __u16 srcp = ntohs(inet->inet_sport);
23672         int rx_queue;
23673 @@ -2284,8 +2294,8 @@ static void get_timewait4_sock(const str
23674         __be32 dest, src;
23675         __u16 destp, srcp;
23676
23677 -       dest  = tw->tw_daddr;
23678 -       src   = tw->tw_rcv_saddr;
23679 +       dest  = nx_map_sock_lback(current_nx_info(), tw->tw_daddr);
23680 +       src   = nx_map_sock_lback(current_nx_info(), tw->tw_rcv_saddr);
23681         destp = ntohs(tw->tw_dport);
23682         srcp  = ntohs(tw->tw_sport);
23683
23684 diff -NurpP --minimal linux-4.9.76/net/ipv4/tcp_minisocks.c linux-4.9.76-vs2.3.9.5/net/ipv4/tcp_minisocks.c
23685 --- linux-4.9.76/net/ipv4/tcp_minisocks.c       2018-01-13 21:29:02.000000000 +0000
23686 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/tcp_minisocks.c     2018-01-10 02:50:49.000000000 +0000
23687 @@ -23,6 +23,9 @@
23688  #include <linux/slab.h>
23689  #include <linux/sysctl.h>
23690  #include <linux/workqueue.h>
23691 +#include <linux/vs_limit.h>
23692 +#include <linux/vs_socket.h>
23693 +#include <linux/vs_context.h>
23694  #include <net/tcp.h>
23695  #include <net/inet_common.h>
23696  #include <net/xfrm.h>
23697 @@ -285,6 +288,11 @@ void tcp_time_wait(struct sock *sk, int
23698                 tcptw->tw_ts_offset     = tp->tsoffset;
23699                 tcptw->tw_last_oow_ack_time = 0;
23700
23701 +               tw->tw_xid              = sk->sk_xid;
23702 +               tw->tw_vx_info          = NULL;
23703 +               tw->tw_nid              = sk->sk_nid;
23704 +               tw->tw_nx_info          = NULL;
23705 +
23706  #if IS_ENABLED(CONFIG_IPV6)
23707                 if (tw->tw_family == PF_INET6) {
23708                         struct ipv6_pinfo *np = inet6_sk(sk);
23709 diff -NurpP --minimal linux-4.9.76/net/ipv4/udp.c linux-4.9.76-vs2.3.9.5/net/ipv4/udp.c
23710 --- linux-4.9.76/net/ipv4/udp.c 2018-01-13 21:29:02.000000000 +0000
23711 +++ linux-4.9.76-vs2.3.9.5/net/ipv4/udp.c       2018-01-13 20:43:44.000000000 +0000
23712 @@ -361,13 +361,27 @@ int ipv4_rcv_saddr_equal(const struct so
23713                          bool match_wildcard)
23714  {
23715         struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2);
23716 +       __be32  sk1_rcv_saddr = inet1->inet_rcv_saddr,
23717 +               sk2_rcv_saddr = inet2->inet_rcv_saddr;
23718
23719 -       if (!ipv6_only_sock(sk2)) {
23720 -               if (inet1->inet_rcv_saddr == inet2->inet_rcv_saddr)
23721 -                       return 1;
23722 -               if (!inet1->inet_rcv_saddr || !inet2->inet_rcv_saddr)
23723 -                       return match_wildcard;
23724 -       }
23725 +       if (ipv6_only_sock(sk2))
23726 +               return 0;
23727 +
23728 +       if (sk1_rcv_saddr && sk2_rcv_saddr && sk1_rcv_saddr == sk2_rcv_saddr)
23729 +               return 1;
23730 +
23731 +       if (match_wildcard) {
23732 +               if (!sk2_rcv_saddr && !sk1_rcv_saddr)
23733 +                       return nx_v4_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
23734 +
23735 +               if (!sk2_rcv_saddr && sk1_rcv_saddr)
23736 +                       return v4_addr_in_nx_info(sk2->sk_nx_info,
23737 +                               sk1_rcv_saddr, NXA_MASK_BIND);
23738 +
23739 +               if (!sk1_rcv_saddr && sk2_rcv_saddr)
23740 +                       return v4_addr_in_nx_info(sk1->sk_nx_info,
23741 +                               sk2_rcv_saddr, NXA_MASK_BIND);
23742 +       }
23743         return 0;
23744  }
23745
23746 @@ -408,6 +422,11 @@ static int compute_score(struct sock *sk
23747                 if (inet->inet_rcv_saddr != daddr)
23748                         return -1;
23749                 score += 4;
23750 +               } else {
23751 +                       /* block non nx_info ips */
23752 +                       if (!v4_addr_in_nx_info(sk->sk_nx_info,
23753 +                               daddr, NXA_MASK_BIND))
23754 +                               return -1;
23755         }
23756
23757         if (inet->inet_daddr) {
23758 @@ -483,6 +502,7 @@ static struct sock *udp4_lib_lookup2(str
23759         return result;
23760  }
23761
23762 +
23763  /* UDP is nearly always wildcards out the wazoo, it makes no sense to try
23764   * harder than this. -DaveM
23765   */
23766 @@ -603,7 +623,7 @@ static inline bool __udp_is_mcast_sock(s
23767             udp_sk(sk)->udp_port_hash != hnum ||
23768             (inet->inet_daddr && inet->inet_daddr != rmt_addr) ||
23769             (inet->inet_dport != rmt_port && inet->inet_dport) ||
23770 -           (inet->inet_rcv_saddr && inet->inet_rcv_saddr != loc_addr) ||
23771 +           !v4_sock_addr_match(sk->sk_nx_info, inet, loc_addr) ||
23772             ipv6_only_sock(sk) ||
23773             (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
23774                 return false;
23775 @@ -1018,6 +1038,16 @@ int udp_sendmsg(struct sock *sk, struct
23776                                    flow_flags,
23777                                    faddr, saddr, dport, inet->inet_sport);
23778
23779 +               if (sk->sk_nx_info) {
23780 +                       rt = ip_v4_find_src(net, sk->sk_nx_info, fl4);
23781 +                       if (IS_ERR(rt)) {
23782 +                               err = PTR_ERR(rt);
23783 +                               rt = NULL;
23784 +                               goto out;
23785 +                       }
23786 +                       ip_rt_put(rt);
23787 +               }
23788 +
23789                 security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
23790                 rt = ip_route_output_flow(net, fl4, sk);
23791                 if (IS_ERR(rt)) {
23792 @@ -1314,7 +1344,8 @@ try_again:
23793         if (sin) {
23794                 sin->sin_family = AF_INET;
23795                 sin->sin_port = udp_hdr(skb)->source;
23796 -               sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
23797 +               sin->sin_addr.s_addr = nx_map_sock_lback(
23798 +                       skb->sk->sk_nx_info, ip_hdr(skb)->saddr);
23799                 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
23800                 *addr_len = sizeof(*sin);
23801         }
23802 @@ -2260,6 +2291,8 @@ static struct sock *udp_get_first(struct
23803                 sk_for_each(sk, &hslot->head) {
23804                         if (!net_eq(sock_net(sk), net))
23805                                 continue;
23806 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23807 +                               continue;
23808                         if (sk->sk_family == state->family)
23809                                 goto found;
23810                 }
23811 @@ -2277,7 +2310,9 @@ static struct sock *udp_get_next(struct
23812
23813         do {
23814                 sk = sk_next(sk);
23815 -       } while (sk && (!net_eq(sock_net(sk), net) || sk->sk_family != state->family));
23816 +       } while (sk && (!net_eq(sock_net(sk), net) ||
23817 +               sk->sk_family != state->family ||
23818 +               !nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT)));
23819
23820         if (!sk) {
23821                 if (state->bucket <= state->udp_table->mask)
23822 @@ -2373,8 +2408,8 @@ static void udp4_format_sock(struct sock
23823                 int bucket)
23824  {
23825         struct inet_sock *inet = inet_sk(sp);
23826 -       __be32 dest = inet->inet_daddr;
23827 -       __be32 src  = inet->inet_rcv_saddr;
23828 +       __be32 dest = nx_map_sock_lback(current_nx_info(), inet->inet_daddr);
23829 +       __be32 src = nx_map_sock_lback(current_nx_info(), inet->inet_rcv_saddr);
23830         __u16 destp       = ntohs(inet->inet_dport);
23831         __u16 srcp        = ntohs(inet->inet_sport);
23832
23833 diff -NurpP --minimal linux-4.9.76/net/ipv6/addrconf.c linux-4.9.76-vs2.3.9.5/net/ipv6/addrconf.c
23834 --- linux-4.9.76/net/ipv6/addrconf.c    2018-01-13 21:29:02.000000000 +0000
23835 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/addrconf.c  2018-01-13 22:09:44.000000000 +0000
23836 @@ -92,6 +92,7 @@
23837  #include <linux/proc_fs.h>
23838  #include <linux/seq_file.h>
23839  #include <linux/export.h>
23840 +#include <linux/vs_network.h>
23841
23842  /* Set to 3 to get tracing... */
23843  #define ACONF_DEBUG 2
23844 @@ -1494,7 +1495,8 @@ static int __ipv6_dev_get_saddr(struct n
23845                                 struct ipv6_saddr_dst *dst,
23846                                 struct inet6_dev *idev,
23847                                 struct ipv6_saddr_score *scores,
23848 -                               int hiscore_idx)
23849 +                               int hiscore_idx,
23850 +                               struct nx_info *nxi)
23851  {
23852         struct ipv6_saddr_score *score = &scores[1 - hiscore_idx], *hiscore = &scores[hiscore_idx];
23853
23854 @@ -1524,6 +1526,8 @@ static int __ipv6_dev_get_saddr(struct n
23855                                             idev->dev->name);
23856                         continue;
23857                 }
23858 +               if (!v6_addr_in_nx_info(nxi, &score->ifa->addr, -1))
23859 +                       continue;
23860
23861                 score->rule = -1;
23862                 bitmap_zero(score->scorebits, IPV6_SADDR_RULE_MAX);
23863 @@ -1574,26 +1578,27 @@ static int ipv6_get_saddr_master(struct
23864                                  const struct net_device *master,
23865                                  struct ipv6_saddr_dst *dst,
23866                                  struct ipv6_saddr_score *scores,
23867 -                                int hiscore_idx)
23868 +                                int hiscore_idx,
23869 +                                struct nx_info *nxi)
23870  {
23871         struct inet6_dev *idev;
23872
23873         idev = __in6_dev_get(dst_dev);
23874         if (idev)
23875 -               hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev,
23876 -                                                  scores, hiscore_idx);
23877 +               hiscore_idx = __ipv6_dev_get_saddr(net, dst,
23878 +                       idev, scores, hiscore_idx, nxi);
23879
23880         idev = __in6_dev_get(master);
23881         if (idev)
23882 -               hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev,
23883 -                                                  scores, hiscore_idx);
23884 +               hiscore_idx = __ipv6_dev_get_saddr(net, dst,
23885 +                       idev, scores, hiscore_idx, nxi);
23886
23887         return hiscore_idx;
23888  }
23889
23890  int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
23891                        const struct in6_addr *daddr, unsigned int prefs,
23892 -                      struct in6_addr *saddr)
23893 +                      struct in6_addr *saddr, struct nx_info *nxi)
23894  {
23895         struct ipv6_saddr_score scores[2], *hiscore;
23896         struct ipv6_saddr_dst dst;
23897 @@ -1642,7 +1647,8 @@ int ipv6_dev_get_saddr(struct net *net,
23898
23899         if (use_oif_addr) {
23900                 if (idev)
23901 -                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
23902 +                       hiscore_idx = __ipv6_dev_get_saddr(net,
23903 +                               &dst, idev, scores, hiscore_idx, nxi);
23904         } else {
23905                 const struct net_device *master;
23906                 int master_idx = 0;
23907 @@ -1656,8 +1662,8 @@ int ipv6_dev_get_saddr(struct net *net,
23908                         master_idx = master->ifindex;
23909
23910                         hiscore_idx = ipv6_get_saddr_master(net, dst_dev,
23911 -                                                           master, &dst,
23912 -                                                           scores, hiscore_idx);
23913 +                                               master, &dst, scores,
23914 +                                               hiscore_idx, nxi);
23915
23916                         if (scores[hiscore_idx].ifa)
23917                                 goto out;
23918 @@ -1672,7 +1678,8 @@ int ipv6_dev_get_saddr(struct net *net,
23919                         idev = __in6_dev_get(dev);
23920                         if (!idev)
23921                                 continue;
23922 -                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
23923 +                       hiscore_idx = __ipv6_dev_get_saddr(net,
23924 +                               &dst, idev, scores, hiscore_idx, nxi);
23925                 }
23926         }
23927
23928 @@ -4128,7 +4135,10 @@ static void if6_seq_stop(struct seq_file
23929  static int if6_seq_show(struct seq_file *seq, void *v)
23930  {
23931         struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
23932 -       seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
23933 +
23934 +       if (nx_check(0, VS_ADMIN|VS_WATCH) ||
23935 +           v6_addr_in_nx_info(current_nx_info(), &ifp->addr, -1))
23936 +               seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
23937                    &ifp->addr,
23938                    ifp->idev->dev->ifindex,
23939                    ifp->prefix_len,
23940 @@ -4712,6 +4722,11 @@ static int in6_dump_addrs(struct inet6_d
23941         struct ifacaddr6 *ifaca;
23942         int err = 1;
23943         int ip_idx = *p_ip_idx;
23944 +       struct nx_info *nxi = skb->sk ? skb->sk->sk_nx_info : NULL;
23945 +
23946 +       /* disable ipv6 on non v6 guests */
23947 +       if (nxi && !nx_info_has_v6(nxi))
23948 +               return skb->len;
23949
23950         read_lock_bh(&idev->lock);
23951         switch (type) {
23952 @@ -4722,6 +4737,8 @@ static int in6_dump_addrs(struct inet6_d
23953                 list_for_each_entry(ifa, &idev->addr_list, if_list) {
23954                         if (++ip_idx < s_ip_idx)
23955                                 continue;
23956 +                       if (!v6_addr_in_nx_info(nxi, &ifa->addr, -1))
23957 +                               continue;
23958                         err = inet6_fill_ifaddr(skb, ifa,
23959                                                 NETLINK_CB(cb->skb).portid,
23960                                                 cb->nlh->nlmsg_seq,
23961 @@ -4739,6 +4756,8 @@ static int in6_dump_addrs(struct inet6_d
23962                      ifmca = ifmca->next, ip_idx++) {
23963                         if (ip_idx < s_ip_idx)
23964                                 continue;
23965 +                       if (!v6_addr_in_nx_info(nxi, &ifmca->mca_addr, -1))
23966 +                               continue;
23967                         err = inet6_fill_ifmcaddr(skb, ifmca,
23968                                                   NETLINK_CB(cb->skb).portid,
23969                                                   cb->nlh->nlmsg_seq,
23970 @@ -4754,6 +4773,8 @@ static int in6_dump_addrs(struct inet6_d
23971                      ifaca = ifaca->aca_next, ip_idx++) {
23972                         if (ip_idx < s_ip_idx)
23973                                 continue;
23974 +                       if (!v6_addr_in_nx_info(nxi, &ifaca->aca_addr, -1))
23975 +                               continue;
23976                         err = inet6_fill_ifacaddr(skb, ifaca,
23977                                                   NETLINK_CB(cb->skb).portid,
23978                                                   cb->nlh->nlmsg_seq,
23979 @@ -4782,6 +4803,10 @@ static int inet6_dump_addr(struct sk_buf
23980         struct inet6_dev *idev;
23981         struct hlist_head *head;
23982
23983 +       /* FIXME: maybe disable ipv6 on non v6 guests?
23984 +       if (skb->sk && skb->sk->sk_vx_info)
23985 +               return skb->len; */
23986 +
23987         s_h = cb->args[0];
23988         s_idx = idx = cb->args[1];
23989         s_ip_idx = ip_idx = cb->args[2];
23990 @@ -5300,6 +5325,7 @@ static int inet6_dump_ifinfo(struct sk_b
23991         struct net_device *dev;
23992         struct inet6_dev *idev;
23993         struct hlist_head *head;
23994 +       struct nx_info *nxi = skb->sk ? skb->sk->sk_nx_info : NULL;
23995
23996         s_h = cb->args[0];
23997         s_idx = cb->args[1];
23998 @@ -5311,6 +5337,8 @@ static int inet6_dump_ifinfo(struct sk_b
23999                 hlist_for_each_entry_rcu(dev, head, index_hlist) {
24000                         if (idx < s_idx)
24001                                 goto cont;
24002 +                       if (!v6_dev_in_nx_info(dev, nxi))
24003 +                               goto cont;
24004                         idev = __in6_dev_get(dev);
24005                         if (!idev)
24006                                 goto cont;
24007 diff -NurpP --minimal linux-4.9.76/net/ipv6/af_inet6.c linux-4.9.76-vs2.3.9.5/net/ipv6/af_inet6.c
24008 --- linux-4.9.76/net/ipv6/af_inet6.c    2018-01-13 21:29:02.000000000 +0000
24009 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/af_inet6.c  2018-01-13 22:10:07.000000000 +0000
24010 @@ -43,6 +43,7 @@
24011  #include <linux/netdevice.h>
24012  #include <linux/icmpv6.h>
24013  #include <linux/netfilter_ipv6.h>
24014 +#include <linux/vs_inet.h>
24015
24016  #include <net/ip.h>
24017  #include <net/ipv6.h>
24018 @@ -167,10 +168,13 @@ lookup_protocol:
24019         }
24020
24021         err = -EPERM;
24022 +       if ((protocol == IPPROTO_ICMPV6) &&
24023 +               nx_capable(CAP_NET_RAW, NXC_RAW_ICMP))
24024 +               goto override;
24025         if (sock->type == SOCK_RAW && !kern &&
24026             !ns_capable(net->user_ns, CAP_NET_RAW))
24027                 goto out_rcu_unlock;
24028 -
24029 +override:
24030         sock->ops = answer->ops;
24031         answer_prot = answer->prot;
24032         answer_flags = answer->flags;
24033 @@ -272,6 +276,7 @@ int inet6_bind(struct socket *sock, stru
24034         struct inet_sock *inet = inet_sk(sk);
24035         struct ipv6_pinfo *np = inet6_sk(sk);
24036         struct net *net = sock_net(sk);
24037 +       struct nx_v6_sock_addr nsa;
24038         __be32 v4addr = 0;
24039         unsigned short snum;
24040         int addr_type = 0;
24041 @@ -287,6 +292,10 @@ int inet6_bind(struct socket *sock, stru
24042         if (addr->sin6_family != AF_INET6)
24043                 return -EAFNOSUPPORT;
24044
24045 +       err = v6_map_sock_addr(inet, addr, &nsa);
24046 +       if (err)
24047 +               return err;
24048 +
24049         addr_type = ipv6_addr_type(&addr->sin6_addr);
24050         if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
24051                 return -EINVAL;
24052 @@ -327,6 +336,10 @@ int inet6_bind(struct socket *sock, stru
24053                         err = -EADDRNOTAVAIL;
24054                         goto out;
24055                 }
24056 +               if (!v4_addr_in_nx_info(sk->sk_nx_info, v4addr, NXA_MASK_BIND)) {
24057 +                       err = -EADDRNOTAVAIL;
24058 +                       goto out;
24059 +               }
24060         } else {
24061                 if (addr_type != IPV6_ADDR_ANY) {
24062                         struct net_device *dev = NULL;
24063 @@ -353,6 +366,11 @@ int inet6_bind(struct socket *sock, stru
24064                                 }
24065                         }
24066
24067 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, &addr->sin6_addr, -1)) {
24068 +                               err = -EADDRNOTAVAIL;
24069 +                               goto out_unlock;
24070 +                       }
24071 +
24072                         /* ipv4 addr of the socket is invalid.  Only the
24073                          * unspecified and mapped address have a v4 equivalent.
24074                          */
24075 @@ -370,6 +388,9 @@ int inet6_bind(struct socket *sock, stru
24076                 }
24077         }
24078
24079 +       /* what's that for? */
24080 +       v6_set_sock_addr(inet, &nsa);
24081 +
24082         inet->inet_rcv_saddr = v4addr;
24083         inet->inet_saddr = v4addr;
24084
24085 @@ -474,9 +495,11 @@ int inet6_getname(struct socket *sock, s
24086                         return -ENOTCONN;
24087                 sin->sin6_port = inet->inet_dport;
24088                 sin->sin6_addr = sk->sk_v6_daddr;
24089 +               /* FIXME: remap lback? */
24090                 if (np->sndflow)
24091                         sin->sin6_flowinfo = np->flow_label;
24092         } else {
24093 +               /* FIXME: remap lback? */
24094                 if (ipv6_addr_any(&sk->sk_v6_rcv_saddr))
24095                         sin->sin6_addr = np->saddr;
24096                 else
24097 diff -NurpP --minimal linux-4.9.76/net/ipv6/datagram.c linux-4.9.76-vs2.3.9.5/net/ipv6/datagram.c
24098 --- linux-4.9.76/net/ipv6/datagram.c    2018-01-13 21:29:02.000000000 +0000
24099 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/datagram.c  2018-01-10 02:50:49.000000000 +0000
24100 @@ -777,7 +777,7 @@ int ip6_datagram_send_ctl(struct net *ne
24101
24102                         rcu_read_lock();
24103                         if (fl6->flowi6_oif) {
24104 -                               dev = dev_get_by_index_rcu(net, fl6->flowi6_oif);
24105 +                               dev = dev_get_by_index_real_rcu(net, fl6->flowi6_oif);
24106                                 if (!dev) {
24107                                         rcu_read_unlock();
24108                                         return -ENODEV;
24109 diff -NurpP --minimal linux-4.9.76/net/ipv6/fib6_rules.c linux-4.9.76-vs2.3.9.5/net/ipv6/fib6_rules.c
24110 --- linux-4.9.76/net/ipv6/fib6_rules.c  2018-01-13 21:29:02.000000000 +0000
24111 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/fib6_rules.c        2018-01-10 02:50:49.000000000 +0000
24112 @@ -102,7 +102,7 @@ static int fib6_rule_action(struct fib_r
24113                                                ip6_dst_idev(&rt->dst)->dev,
24114                                                &flp6->daddr,
24115                                                rt6_flags2srcprefs(flags),
24116 -                                              &saddr))
24117 +                                              &saddr, NULL))
24118                                 goto again;
24119                         if (!ipv6_prefix_equal(&saddr, &r->src.addr,
24120                                                r->src.plen))
24121 diff -NurpP --minimal linux-4.9.76/net/ipv6/inet6_hashtables.c linux-4.9.76-vs2.3.9.5/net/ipv6/inet6_hashtables.c
24122 --- linux-4.9.76/net/ipv6/inet6_hashtables.c    2016-12-11 19:17:54.000000000 +0000
24123 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/inet6_hashtables.c  2018-01-13 00:26:28.000000000 +0000
24124 @@ -16,6 +16,7 @@
24125
24126  #include <linux/module.h>
24127  #include <linux/random.h>
24128 +#include <linux/vs_inet6.h>
24129
24130  #include <net/addrconf.h>
24131  #include <net/inet_connection_sock.h>
24132 @@ -108,6 +109,9 @@ static inline int compute_score(struct s
24133                         if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, daddr))
24134                                 return -1;
24135                         score++;
24136 +               } else {
24137 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, daddr, -1))
24138 +                               return -1;
24139                 }
24140                 if (sk->sk_bound_dev_if || exact_dif) {
24141                         if (sk->sk_bound_dev_if != dif)
24142 @@ -282,39 +286,71 @@ EXPORT_SYMBOL_GPL(inet6_hash);
24143   *                          IPV6_ADDR_ANY only equals to IPV6_ADDR_ANY,
24144   *                          and 0.0.0.0 equals to 0.0.0.0 only
24145   */
24146 -int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2,
24147 +int ipv6_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2,
24148                          bool match_wildcard)
24149  {
24150 +       const struct in6_addr *sk1_rcv_saddr6 = inet6_rcv_saddr(sk1);
24151         const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
24152 +       __be32 sk1_rcv_saddr = sk1->sk_rcv_saddr;
24153 +       __be32 sk2_rcv_saddr = sk2->sk_rcv_saddr;
24154 +       int sk1_ipv6only = inet_v6_ipv6only(sk1);
24155         int sk2_ipv6only = inet_v6_ipv6only(sk2);
24156 -       int addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
24157 +       int addr_type1 = ipv6_addr_type(sk1_rcv_saddr6);
24158         int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED;
24159
24160 +
24161 +       /* if one is mapped and the other is ipv6only exit early */
24162 +       if (addr_type1 == IPV6_ADDR_MAPPED && sk2_ipv6only)
24163 +               return 0;
24164 +
24165 +       if (addr_type2 == IPV6_ADDR_MAPPED && sk1_ipv6only)
24166 +               return 0;
24167 +
24168         /* if both are mapped, treat as IPv4 */
24169 -       if (addr_type == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) {
24170 -               if (!sk2_ipv6only) {
24171 -                       if (sk->sk_rcv_saddr == sk2->sk_rcv_saddr)
24172 -                               return 1;
24173 -                       if (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr)
24174 -                               return match_wildcard;
24175 -               }
24176 +       if (addr_type1 == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) {
24177 +               if (sk1_rcv_saddr == sk2_rcv_saddr)
24178 +                       return 1;
24179 +               if ((!sk1_rcv_saddr || !sk2_rcv_saddr) && match_wildcard)
24180 +                       goto vs_v4;
24181                 return 0;
24182         }
24183
24184 -       if (addr_type == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY)
24185 -               return 1;
24186 +       /* if both are wildcards, check for overlap */
24187 +       if (addr_type1 == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY)
24188 +               return nx_v6_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
24189
24190 -       if (addr_type2 == IPV6_ADDR_ANY && match_wildcard &&
24191 -           !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
24192 +       /* if both are valid ipv6 addresses, mapped handled above */
24193 +       if (addr_type1 != IPV6_ADDR_ANY && addr_type2 != IPV6_ADDR_ANY &&
24194 +           sk2_rcv_saddr6 && ipv6_addr_equal(sk1_rcv_saddr6, sk2_rcv_saddr6))
24195                 return 1;
24196
24197 -       if (addr_type == IPV6_ADDR_ANY && match_wildcard &&
24198 -           !(ipv6_only_sock(sk) && addr_type2 == IPV6_ADDR_MAPPED))
24199 -               return 1;
24200 +       if (addr_type1 == IPV6_ADDR_ANY && match_wildcard) {
24201 +               /* ipv6only case handled above */
24202 +               if (addr_type2 == IPV6_ADDR_MAPPED)
24203 +                       return v4_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr, -1);
24204 +               else
24205 +                       return v6_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr6, -1);
24206 +       }
24207
24208 -       if (sk2_rcv_saddr6 &&
24209 -           ipv6_addr_equal(&sk->sk_v6_rcv_saddr, sk2_rcv_saddr6))
24210 -               return 1;
24211 +       if (addr_type2 == IPV6_ADDR_ANY && match_wildcard) {
24212 +               /* ipv6only case handled above */
24213 +               if (addr_type1 == IPV6_ADDR_MAPPED)
24214 +                       return v4_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr, -1);
24215 +               else
24216 +                       return v6_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr6, -1);
24217 +       }
24218 +
24219 +       return 0;
24220 +
24221 +vs_v4:
24222 +       if (!sk1_rcv_saddr && !sk2_rcv_saddr)
24223 +               return nx_v4_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
24224 +
24225 +       if (!sk2_rcv_saddr)
24226 +               return v4_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr, -1);
24227 +
24228 +       if (!sk1_rcv_saddr)
24229 +               return v4_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr, -1);
24230
24231         return 0;
24232  }
24233 diff -NurpP --minimal linux-4.9.76/net/ipv6/ip6_fib.c linux-4.9.76-vs2.3.9.5/net/ipv6/ip6_fib.c
24234 --- linux-4.9.76/net/ipv6/ip6_fib.c     2018-01-13 21:29:02.000000000 +0000
24235 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/ip6_fib.c   2018-01-10 02:50:49.000000000 +0000
24236 @@ -1976,6 +1976,7 @@ static int ipv6_route_seq_show(struct se
24237         struct rt6_info *rt = v;
24238         struct ipv6_route_iter *iter = seq->private;
24239
24240 +       /* FIXME: check for network context? */
24241         seq_printf(seq, "%pi6 %02x ", &rt->rt6i_dst.addr, rt->rt6i_dst.plen);
24242
24243  #ifdef CONFIG_IPV6_SUBTREES
24244 diff -NurpP --minimal linux-4.9.76/net/ipv6/ip6_output.c linux-4.9.76-vs2.3.9.5/net/ipv6/ip6_output.c
24245 --- linux-4.9.76/net/ipv6/ip6_output.c  2018-01-13 21:29:02.000000000 +0000
24246 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/ip6_output.c        2018-01-10 02:50:49.000000000 +0000
24247 @@ -956,7 +956,8 @@ static int ip6_dst_lookup_tail(struct ne
24248                 rt = (*dst)->error ? NULL : (struct rt6_info *)*dst;
24249                 err = ip6_route_get_saddr(net, rt, &fl6->daddr,
24250                                           sk ? inet6_sk(sk)->srcprefs : 0,
24251 -                                         &fl6->saddr);
24252 +                                         &fl6->saddr,
24253 +                                         sk ? sk->sk_nx_info : NULL);
24254                 if (err)
24255                         goto out_err_release;
24256
24257 diff -NurpP --minimal linux-4.9.76/net/ipv6/ip6_tunnel.c linux-4.9.76-vs2.3.9.5/net/ipv6/ip6_tunnel.c
24258 --- linux-4.9.76/net/ipv6/ip6_tunnel.c  2018-01-13 21:29:02.000000000 +0000
24259 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/ip6_tunnel.c        2018-01-10 08:24:13.000000000 +0000
24260 @@ -1108,7 +1108,7 @@ route_lookup:
24261                 }
24262                 if (t->parms.collect_md &&
24263                     ipv6_dev_get_saddr(net, ip6_dst_idev(dst)->dev,
24264 -                                      &fl6->daddr, 0, &fl6->saddr))
24265 +                                      &fl6->daddr, 0, &fl6->saddr, NULL))
24266                         goto tx_err_link_failure;
24267                 ndst = dst;
24268         }
24269 diff -NurpP --minimal linux-4.9.76/net/ipv6/ndisc.c linux-4.9.76-vs2.3.9.5/net/ipv6/ndisc.c
24270 --- linux-4.9.76/net/ipv6/ndisc.c       2016-12-11 19:17:54.000000000 +0000
24271 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/ndisc.c     2018-01-10 02:50:49.000000000 +0000
24272 @@ -512,7 +512,7 @@ void ndisc_send_na(struct net_device *de
24273         } else {
24274                 if (ipv6_dev_get_saddr(dev_net(dev), dev, daddr,
24275                                        inet6_sk(dev_net(dev)->ipv6.ndisc_sk)->srcprefs,
24276 -                                      &tmpaddr))
24277 +                                      &tmpaddr, NULL))
24278                         return;
24279                 src_addr = &tmpaddr;
24280         }
24281 diff -NurpP --minimal linux-4.9.76/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c linux-4.9.76-vs2.3.9.5/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c
24282 --- linux-4.9.76/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c    2016-12-11 19:17:54.000000000 +0000
24283 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c  2018-01-10 02:50:49.000000000 +0000
24284 @@ -39,7 +39,7 @@ nf_nat_masquerade_ipv6(struct sk_buff *s
24285                             ctinfo == IP_CT_RELATED_REPLY));
24286
24287         if (ipv6_dev_get_saddr(nf_ct_net(ct), out,
24288 -                              &ipv6_hdr(skb)->daddr, 0, &src) < 0)
24289 +                              &ipv6_hdr(skb)->daddr, 0, &src, NULL) < 0)
24290                 return NF_DROP;
24291
24292         nfct_nat(ct)->masq_index = out->ifindex;
24293 diff -NurpP --minimal linux-4.9.76/net/ipv6/raw.c linux-4.9.76-vs2.3.9.5/net/ipv6/raw.c
24294 --- linux-4.9.76/net/ipv6/raw.c 2018-01-13 21:29:02.000000000 +0000
24295 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/raw.c       2018-01-13 22:10:35.000000000 +0000
24296 @@ -291,6 +291,13 @@ static int rawv6_bind(struct sock *sk, s
24297                                 goto out_unlock;
24298                 }
24299
24300 +               if (!v6_addr_in_nx_info(sk->sk_nx_info, &addr->sin6_addr, -1)) {
24301 +                       err = -EADDRNOTAVAIL;
24302 +                       if (dev)
24303 +                               dev_put(dev);
24304 +                       goto out;
24305 +               }
24306 +
24307                 /* ipv4 addr of the socket is invalid.  Only the
24308                  * unspecified and mapped address have a v4 equivalent.
24309                  */
24310 diff -NurpP --minimal linux-4.9.76/net/ipv6/route.c linux-4.9.76-vs2.3.9.5/net/ipv6/route.c
24311 --- linux-4.9.76/net/ipv6/route.c       2018-01-13 21:29:02.000000000 +0000
24312 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/route.c     2018-01-13 22:10:45.000000000 +0000
24313 @@ -3288,7 +3288,8 @@ static int rt6_fill_node(struct net *net
24314                                 goto nla_put_failure;
24315         } else if (dst) {
24316                 struct in6_addr saddr_buf;
24317 -               if (ip6_route_get_saddr(net, rt, dst, 0, &saddr_buf) == 0 &&
24318 +               if (ip6_route_get_saddr(net, rt, dst, 0, &saddr_buf,
24319 +                   (skb->sk ? skb->sk->sk_nx_info : NULL)) == 0 &&
24320                     nla_put_in6_addr(skb, RTA_PREFSRC, &saddr_buf))
24321                         goto nla_put_failure;
24322         }
24323 diff -NurpP --minimal linux-4.9.76/net/ipv6/tcp_ipv6.c linux-4.9.76-vs2.3.9.5/net/ipv6/tcp_ipv6.c
24324 --- linux-4.9.76/net/ipv6/tcp_ipv6.c    2018-01-13 21:29:02.000000000 +0000
24325 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/tcp_ipv6.c  2018-01-13 22:10:53.000000000 +0000
24326 @@ -149,11 +149,18 @@ static int tcp_v6_connect(struct sock *s
24327          */
24328
24329         if (ipv6_addr_any(&usin->sin6_addr)) {
24330 -               if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
24331 -                       ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
24332 -                                              &usin->sin6_addr);
24333 -               else
24334 -                       usin->sin6_addr = in6addr_loopback;
24335 +               struct nx_info *nxi =  sk->sk_nx_info;
24336 +
24337 +               if (nxi && nx_info_has_v6(nxi))
24338 +                       /* FIXME: remap lback? */
24339 +                       usin->sin6_addr = nxi->v6.ip;
24340 +               else {
24341 +                       if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
24342 +                               ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
24343 +                                                      &usin->sin6_addr);
24344 +                       else
24345 +                               usin->sin6_addr = in6addr_loopback;
24346 +               }
24347         }
24348
24349         addr_type = ipv6_addr_type(&usin->sin6_addr);
24350 diff -NurpP --minimal linux-4.9.76/net/ipv6/udp.c linux-4.9.76-vs2.3.9.5/net/ipv6/udp.c
24351 --- linux-4.9.76/net/ipv6/udp.c 2018-01-13 21:29:02.000000000 +0000
24352 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/udp.c       2018-01-13 22:11:04.000000000 +0000
24353 @@ -135,6 +135,10 @@ static int compute_score(struct sock *sk
24354                 if (inet->inet_dport != sport)
24355                         return -1;
24356                 score++;
24357 +               } else {
24358 +                       /* block non nx_info ips */
24359 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, daddr, -1))
24360 +                               return -1;
24361         }
24362
24363         if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
24364 diff -NurpP --minimal linux-4.9.76/net/ipv6/xfrm6_policy.c linux-4.9.76-vs2.3.9.5/net/ipv6/xfrm6_policy.c
24365 --- linux-4.9.76/net/ipv6/xfrm6_policy.c        2016-12-11 19:17:54.000000000 +0000
24366 +++ linux-4.9.76-vs2.3.9.5/net/ipv6/xfrm6_policy.c      2018-01-10 02:50:49.000000000 +0000
24367 @@ -64,7 +64,8 @@ static int xfrm6_get_saddr(struct net *n
24368                 return -EHOSTUNREACH;
24369
24370         dev = ip6_dst_idev(dst)->dev;
24371 -       ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6, 0, &saddr->in6);
24372 +       ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6,
24373 +               0, &saddr->in6, NULL);
24374         dst_release(dst);
24375         return 0;
24376  }
24377 diff -NurpP --minimal linux-4.9.76/net/netfilter/ipvs/ip_vs_xmit.c linux-4.9.76-vs2.3.9.5/net/netfilter/ipvs/ip_vs_xmit.c
24378 --- linux-4.9.76/net/netfilter/ipvs/ip_vs_xmit.c        2016-12-11 19:17:54.000000000 +0000
24379 +++ linux-4.9.76-vs2.3.9.5/net/netfilter/ipvs/ip_vs_xmit.c      2018-01-10 02:50:49.000000000 +0000
24380 @@ -381,7 +381,7 @@ __ip_vs_route_output_v6(struct net *net,
24381                 return dst;
24382         if (ipv6_addr_any(&fl6.saddr) &&
24383             ipv6_dev_get_saddr(net, ip6_dst_idev(dst)->dev,
24384 -                              &fl6.daddr, 0, &fl6.saddr) < 0)
24385 +                              &fl6.daddr, 0, &fl6.saddr, NULL) < 0)
24386                 goto out_err;
24387         if (do_xfrm) {
24388                 dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
24389 diff -NurpP --minimal linux-4.9.76/net/netlink/af_netlink.c linux-4.9.76-vs2.3.9.5/net/netlink/af_netlink.c
24390 --- linux-4.9.76/net/netlink/af_netlink.c       2018-01-13 21:29:02.000000000 +0000
24391 +++ linux-4.9.76-vs2.3.9.5/net/netlink/af_netlink.c     2018-01-10 02:50:49.000000000 +0000
24392 @@ -62,6 +62,8 @@
24393  #include <asm/cacheflush.h>
24394  #include <linux/hash.h>
24395  #include <linux/genetlink.h>
24396 +#include <linux/vs_context.h>
24397 +#include <linux/vs_network.h>
24398
24399  #include <net/net_namespace.h>
24400  #include <net/sock.h>
24401 @@ -2463,7 +2465,8 @@ static void *__netlink_seq_next(struct s
24402                         if (err)
24403                                 return ERR_PTR(err);
24404                 }
24405 -       } while (sock_net(&nlk->sk) != seq_file_net(seq));
24406 +       } while ((sock_net(&nlk->sk) != seq_file_net(seq)) ||
24407 +               !nx_check(nlk->sk.sk_nid, VS_WATCH_P | VS_IDENT));
24408
24409         return nlk;
24410  }
24411 diff -NurpP --minimal linux-4.9.76/net/socket.c linux-4.9.76-vs2.3.9.5/net/socket.c
24412 --- linux-4.9.76/net/socket.c   2018-01-13 21:29:03.000000000 +0000
24413 +++ linux-4.9.76-vs2.3.9.5/net/socket.c 2018-01-10 02:50:49.000000000 +0000
24414 @@ -99,10 +99,12 @@
24415
24416  #include <net/sock.h>
24417  #include <linux/netfilter.h>
24418 +#include <linux/vs_socket.h>
24419 +#include <linux/vs_inet.h>
24420 +#include <linux/vs_inet6.h>
24421
24422  #include <linux/if_tun.h>
24423  #include <linux/ipv6_route.h>
24424 -#include <linux/route.h>
24425  #include <linux/sockios.h>
24426  #include <linux/atalk.h>
24427  #include <net/busy_poll.h>
24428 @@ -618,8 +620,24 @@ EXPORT_SYMBOL(__sock_tx_timestamp);
24429
24430  static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
24431  {
24432 -       int ret = sock->ops->sendmsg(sock, msg, msg_data_left(msg));
24433 -       BUG_ON(ret == -EIOCBQUEUED);
24434 +       size_t size = msg_data_left(msg);
24435 +       int ret = sock->ops->sendmsg(sock, msg, size);
24436 +#if 0
24437 +       if (sock->sk) {
24438 +               if (!ret)
24439 +                       vx_sock_fail(sock->sk, size);
24440 +               else
24441 +                       vx_sock_send(sock->sk, size);
24442 +       }
24443 +#endif
24444 +       vxdprintk(VXD_CBIT(net, 7),
24445 +               "sock_sendmsg_nosec: %p[%p,%p,%p;%d/%d]:%zu/%zu",
24446 +               sock, sock->sk,
24447 +               (sock->sk)?sock->sk->sk_nx_info:0,
24448 +               (sock->sk)?sock->sk->sk_vx_info:0,
24449 +               (sock->sk)?sock->sk->sk_xid:0,
24450 +               (sock->sk)?sock->sk->sk_nid:0,
24451 +               size, msg_data_left(msg));
24452         return ret;
24453  }
24454
24455 @@ -1109,6 +1127,13 @@ int __sock_create(struct net *net, int f
24456         if (type < 0 || type >= SOCK_MAX)
24457                 return -EINVAL;
24458
24459 +       if (!nx_check(0, VS_ADMIN)) {
24460 +               if (family == PF_INET && !current_nx_info_has_v4())
24461 +                       return -EAFNOSUPPORT;
24462 +               if (family == PF_INET6 && !current_nx_info_has_v6())
24463 +                       return -EAFNOSUPPORT;
24464 +       }
24465 +
24466         /* Compatibility.
24467
24468            This uglymoron is moved from INET layer to here to avoid
24469 @@ -1239,6 +1264,7 @@ SYSCALL_DEFINE3(socket, int, family, int
24470         if (retval < 0)
24471                 goto out;
24472
24473 +       set_bit(SOCK_USER_SOCKET, &sock->flags);
24474         retval = sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK));
24475         if (retval < 0)
24476                 goto out_release;
24477 @@ -1280,10 +1306,12 @@ SYSCALL_DEFINE4(socketpair, int, family,
24478         err = sock_create(family, type, protocol, &sock1);
24479         if (err < 0)
24480                 goto out;
24481 +       set_bit(SOCK_USER_SOCKET, &sock1->flags);
24482
24483         err = sock_create(family, type, protocol, &sock2);
24484         if (err < 0)
24485                 goto out_release_1;
24486 +       set_bit(SOCK_USER_SOCKET, &sock2->flags);
24487
24488         err = sock1->ops->socketpair(sock1, sock2);
24489         if (err < 0)
24490 diff -NurpP --minimal linux-4.9.76/net/sunrpc/auth.c linux-4.9.76-vs2.3.9.5/net/sunrpc/auth.c
24491 --- linux-4.9.76/net/sunrpc/auth.c      2016-12-11 19:17:54.000000000 +0000
24492 +++ linux-4.9.76-vs2.3.9.5/net/sunrpc/auth.c    2018-01-10 02:50:49.000000000 +0000
24493 @@ -15,6 +15,7 @@
24494  #include <linux/sunrpc/clnt.h>
24495  #include <linux/sunrpc/gss_api.h>
24496  #include <linux/spinlock.h>
24497 +#include <linux/vs_tag.h>
24498
24499  #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
24500  # define RPCDBG_FACILITY       RPCDBG_AUTH
24501 @@ -630,6 +631,7 @@ rpcauth_lookupcred(struct rpc_auth *auth
24502         memset(&acred, 0, sizeof(acred));
24503         acred.uid = cred->fsuid;
24504         acred.gid = cred->fsgid;
24505 +       acred.tag = make_ktag(&init_user_ns, dx_current_tag());
24506         acred.group_info = cred->group_info;
24507         ret = auth->au_ops->lookup_cred(auth, &acred, flags);
24508         return ret;
24509 @@ -669,6 +671,7 @@ rpcauth_bind_root_cred(struct rpc_task *
24510         struct auth_cred acred = {
24511                 .uid = GLOBAL_ROOT_UID,
24512                 .gid = GLOBAL_ROOT_GID,
24513 +               .tag = KTAGT_INIT(dx_current_tag()),
24514         };
24515
24516         dprintk("RPC: %5u looking up %s cred\n",
24517 diff -NurpP --minimal linux-4.9.76/net/sunrpc/auth_unix.c linux-4.9.76-vs2.3.9.5/net/sunrpc/auth_unix.c
24518 --- linux-4.9.76/net/sunrpc/auth_unix.c 2016-12-11 19:17:54.000000000 +0000
24519 +++ linux-4.9.76-vs2.3.9.5/net/sunrpc/auth_unix.c       2018-01-10 02:50:49.000000000 +0000
24520 @@ -13,11 +13,13 @@
24521  #include <linux/sunrpc/clnt.h>
24522  #include <linux/sunrpc/auth.h>
24523  #include <linux/user_namespace.h>
24524 +#include <linux/vs_tag.h>
24525
24526  #define NFS_NGROUPS    16
24527
24528  struct unx_cred {
24529         struct rpc_cred         uc_base;
24530 +       ktag_t                  uc_tag;
24531         kgid_t                  uc_gid;
24532         kgid_t                  uc_gids[NFS_NGROUPS];
24533  };
24534 @@ -86,6 +88,7 @@ unx_create_cred(struct rpc_auth *auth, s
24535                 groups = NFS_NGROUPS;
24536
24537         cred->uc_gid = acred->gid;
24538 +       cred->uc_tag = acred->tag;
24539         for (i = 0; i < groups; i++)
24540                 cred->uc_gids[i] = acred->group_info->gid[i];
24541         if (i < NFS_NGROUPS)
24542 @@ -127,7 +130,9 @@ unx_match(struct auth_cred *acred, struc
24543         unsigned int i;
24544
24545
24546 -       if (!uid_eq(cred->uc_uid, acred->uid) || !gid_eq(cred->uc_gid, acred->gid))
24547 +       if (!uid_eq(cred->uc_uid, acred->uid) ||
24548 +           !gid_eq(cred->uc_gid, acred->gid) ||
24549 +           !tag_eq(cred->uc_tag, acred->tag))
24550                 return 0;
24551
24552         if (acred->group_info != NULL)
24553 @@ -152,7 +157,7 @@ unx_marshal(struct rpc_task *task, __be3
24554         struct rpc_clnt *clnt = task->tk_client;
24555         struct unx_cred *cred = container_of(task->tk_rqstp->rq_cred, struct unx_cred, uc_base);
24556         __be32          *base, *hold;
24557 -       int             i;
24558 +       int             i, tag;
24559
24560         *p++ = htonl(RPC_AUTH_UNIX);
24561         base = p++;
24562 @@ -163,8 +168,11 @@ unx_marshal(struct rpc_task *task, __be3
24563          */
24564         p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
24565
24566 -       *p++ = htonl((u32) from_kuid(&init_user_ns, cred->uc_uid));
24567 -       *p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gid));
24568 +       tag = task->tk_client->cl_tag;
24569 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
24570 +               TAGINO_KUID(tag, cred->uc_uid, cred->uc_tag)));
24571 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
24572 +               TAGINO_KGID(tag, cred->uc_gid, cred->uc_tag)));
24573         hold = p++;
24574         for (i = 0; i < 16 && gid_valid(cred->uc_gids[i]); i++)
24575                 *p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gids[i]));
24576 diff -NurpP --minimal linux-4.9.76/net/sunrpc/clnt.c linux-4.9.76-vs2.3.9.5/net/sunrpc/clnt.c
24577 --- linux-4.9.76/net/sunrpc/clnt.c      2018-01-13 21:29:03.000000000 +0000
24578 +++ linux-4.9.76-vs2.3.9.5/net/sunrpc/clnt.c    2018-01-10 02:50:49.000000000 +0000
24579 @@ -31,6 +31,7 @@
24580  #include <linux/in.h>
24581  #include <linux/in6.h>
24582  #include <linux/un.h>
24583 +#include <linux/vs_cvirt.h>
24584
24585  #include <linux/sunrpc/clnt.h>
24586  #include <linux/sunrpc/addr.h>
24587 @@ -496,6 +497,9 @@ static struct rpc_clnt *rpc_create_xprt(
24588         if (!(args->flags & RPC_CLNT_CREATE_QUIET))
24589                 clnt->cl_chatty = 1;
24590
24591 +       /* TODO: handle RPC_CLNT_CREATE_TAGGED
24592 +       if (args->flags & RPC_CLNT_CREATE_TAGGED)
24593 +               clnt->cl_tag = 1; */
24594         return clnt;
24595  }
24596
24597 diff -NurpP --minimal linux-4.9.76/net/unix/af_unix.c linux-4.9.76-vs2.3.9.5/net/unix/af_unix.c
24598 --- linux-4.9.76/net/unix/af_unix.c     2018-01-13 21:29:03.000000000 +0000
24599 +++ linux-4.9.76-vs2.3.9.5/net/unix/af_unix.c   2018-01-10 02:50:49.000000000 +0000
24600 @@ -117,6 +117,8 @@
24601  #include <net/checksum.h>
24602  #include <linux/security.h>
24603  #include <linux/freezer.h>
24604 +#include <linux/vs_context.h>
24605 +#include <linux/vs_limit.h>
24606
24607  struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
24608  EXPORT_SYMBOL_GPL(unix_socket_table);
24609 @@ -282,6 +284,8 @@ static struct sock *__unix_find_socket_b
24610                 if (!net_eq(sock_net(s), net))
24611                         continue;
24612
24613 +               if (!nx_check(s->sk_nid, VS_WATCH_P | VS_IDENT))
24614 +                       continue;
24615                 if (u->addr->len == len &&
24616                     !memcmp(u->addr->name, sunname, len))
24617                         goto found;
24618 @@ -2732,6 +2736,8 @@ static struct sock *unix_from_bucket(str
24619         for (sk = sk_head(&unix_socket_table[bucket]); sk; sk = sk_next(sk)) {
24620                 if (sock_net(sk) != seq_file_net(seq))
24621                         continue;
24622 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24623 +                       continue;
24624                 if (++count == offset)
24625                         break;
24626         }
24627 @@ -2749,6 +2755,8 @@ static struct sock *unix_next_socket(str
24628                 sk = sk_next(sk);
24629                 if (!sk)
24630                         goto next_bucket;
24631 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24632 +                       continue;
24633                 if (sock_net(sk) == seq_file_net(seq))
24634                         return sk;
24635         }
24636 diff -NurpP --minimal linux-4.9.76/scripts/checksyscalls.sh linux-4.9.76-vs2.3.9.5/scripts/checksyscalls.sh
24637 --- linux-4.9.76/scripts/checksyscalls.sh       2016-12-11 19:17:54.000000000 +0000
24638 +++ linux-4.9.76-vs2.3.9.5/scripts/checksyscalls.sh     2018-01-10 02:50:49.000000000 +0000
24639 @@ -196,7 +196,6 @@ cat << EOF
24640  #define __IGNORE_afs_syscall
24641  #define __IGNORE_getpmsg
24642  #define __IGNORE_putpmsg
24643 -#define __IGNORE_vserver
24644  EOF
24645  }
24646
24647 diff -NurpP --minimal linux-4.9.76/security/commoncap.c linux-4.9.76-vs2.3.9.5/security/commoncap.c
24648 --- linux-4.9.76/security/commoncap.c   2016-12-11 19:17:54.000000000 +0000
24649 +++ linux-4.9.76-vs2.3.9.5/security/commoncap.c 2018-01-10 02:50:49.000000000 +0000
24650 @@ -71,6 +71,7 @@ static void warn_setuid_and_fcaps_mixed(
24651  int cap_capable(const struct cred *cred, struct user_namespace *targ_ns,
24652                 int cap, int audit)
24653  {
24654 +       struct vx_info *vxi = current_vx_info(); /* FIXME: get vxi from cred? */
24655         struct user_namespace *ns = targ_ns;
24656
24657         /* See if cred has the capability in the target user namespace
24658 @@ -79,8 +80,12 @@ int cap_capable(const struct cred *cred,
24659          */
24660         for (;;) {
24661                 /* Do we have the necessary capabilities? */
24662 -               if (ns == cred->user_ns)
24663 -                       return cap_raised(cred->cap_effective, cap) ? 0 : -EPERM;
24664 +               if (ns == cred->user_ns) {
24665 +                       if (vx_info_flags(vxi, VXF_STATE_SETUP, 0) &&
24666 +                           cap_raised(cred->cap_effective, cap))
24667 +                               return 0;
24668 +                       return vx_cap_raised(vxi, cred->cap_effective, cap) ? 0 : -EPERM;
24669 +               }
24670
24671                 /* Have we tried all of the parent namespaces? */
24672                 if (ns == &init_user_ns)
24673 @@ -667,7 +672,7 @@ int cap_inode_setxattr(struct dentry *de
24674
24675         if (!strncmp(name, XATTR_SECURITY_PREFIX,
24676                      sizeof(XATTR_SECURITY_PREFIX) - 1) &&
24677 -           !capable(CAP_SYS_ADMIN))
24678 +               !vx_capable(CAP_SYS_ADMIN, VXC_FS_SECURITY))
24679                 return -EPERM;
24680         return 0;
24681  }
24682 @@ -693,7 +698,7 @@ int cap_inode_removexattr(struct dentry
24683
24684         if (!strncmp(name, XATTR_SECURITY_PREFIX,
24685                      sizeof(XATTR_SECURITY_PREFIX) - 1) &&
24686 -           !capable(CAP_SYS_ADMIN))
24687 +               !vx_capable(CAP_SYS_ADMIN, VXC_FS_SECURITY))
24688                 return -EPERM;
24689         return 0;
24690  }
24691 diff -NurpP --minimal linux-4.9.76/security/selinux/hooks.c linux-4.9.76-vs2.3.9.5/security/selinux/hooks.c
24692 --- linux-4.9.76/security/selinux/hooks.c       2018-01-13 21:29:03.000000000 +0000
24693 +++ linux-4.9.76-vs2.3.9.5/security/selinux/hooks.c     2018-01-10 02:50:49.000000000 +0000
24694 @@ -67,7 +67,6 @@
24695  #include <linux/dccp.h>
24696  #include <linux/quota.h>
24697  #include <linux/un.h>          /* for Unix socket types */
24698 -#include <net/af_unix.h>       /* for Unix socket types */
24699  #include <linux/parser.h>
24700  #include <linux/nfs_mount.h>
24701  #include <net/ipv6.h>