kernel-vserver-2.3.patch

   1 diff -urNp -x '*.orig' linux-4.9/Documentation/vserver/debug.txt linux-4.9/Documentation/vserver/debug.txt
   2 --- linux-4.9/Documentation/vserver/debug.txt   1970-01-01 01:00:00.000000000 +0100
   3 +++ linux-4.9/Documentation/vserver/debug.txt   2021-02-24 15:47:45.047741532 +0100
   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 -urNp -x '*.orig' linux-4.9/arch/alpha/Kconfig linux-4.9/arch/alpha/Kconfig
 160 --- linux-4.9/arch/alpha/Kconfig        2016-12-11 20:17:54.000000000 +0100
 161 +++ linux-4.9/arch/alpha/Kconfig        2021-02-24 15:47:45.037741219 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/alpha/kernel/systbls.S linux-4.9/arch/alpha/kernel/systbls.S
 172 --- linux-4.9/arch/alpha/kernel/systbls.S       2016-12-11 20:17:54.000000000 +0100
 173 +++ linux-4.9/arch/alpha/kernel/systbls.S       2021-02-24 15:47:45.037741219 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/alpha/kernel/traps.c linux-4.9/arch/alpha/kernel/traps.c
 184 --- linux-4.9/arch/alpha/kernel/traps.c 2021-02-24 15:47:30.747294162 +0100
 185 +++ linux-4.9/arch/alpha/kernel/traps.c 2021-02-24 15:47:45.037741219 +0100
 186 @@ -179,7 +179,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/arm/Kconfig linux-4.9/arch/arm/Kconfig
 197 --- linux-4.9/arch/arm/Kconfig  2021-02-24 15:47:30.757294474 +0100
 198 +++ linux-4.9/arch/arm/Kconfig  2021-02-24 15:47:45.041074656 +0100
 199 @@ -2202,6 +2202,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/arm/kernel/calls.S linux-4.9/arch/arm/kernel/calls.S
 209 --- linux-4.9/arch/arm/kernel/calls.S   2016-12-11 20:17:54.000000000 +0100
 210 +++ linux-4.9/arch/arm/kernel/calls.S   2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/arm/kernel/traps.c linux-4.9/arch/arm/kernel/traps.c
 221 --- linux-4.9/arch/arm/kernel/traps.c   2021-02-24 15:47:30.797295726 +0100
 222 +++ linux-4.9/arch/arm/kernel/traps.c   2021-02-24 15:47:45.041074656 +0100
 223 @@ -279,8 +279,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/cris/Kconfig linux-4.9/arch/cris/Kconfig
 235 --- linux-4.9/arch/cris/Kconfig 2016-12-11 20:17:54.000000000 +0100
 236 +++ linux-4.9/arch/cris/Kconfig 2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/ia64/Kconfig linux-4.9/arch/ia64/Kconfig
 247 --- linux-4.9/arch/ia64/Kconfig 2016-12-11 20:17:54.000000000 +0100
 248 +++ linux-4.9/arch/ia64/Kconfig 2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/ia64/kernel/entry.S linux-4.9/arch/ia64/kernel/entry.S
 259 --- linux-4.9/arch/ia64/kernel/entry.S  2016-12-11 20:17:54.000000000 +0100
 260 +++ linux-4.9/arch/ia64/kernel/entry.S  2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/ia64/kernel/ptrace.c linux-4.9/arch/ia64/kernel/ptrace.c
 271 --- linux-4.9/arch/ia64/kernel/ptrace.c 2021-02-24 15:47:30.857297603 +0100
 272 +++ linux-4.9/arch/ia64/kernel/ptrace.c 2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/ia64/kernel/traps.c linux-4.9/arch/ia64/kernel/traps.c
 282 --- linux-4.9/arch/ia64/kernel/traps.c  2016-12-11 20:17:54.000000000 +0100
 283 +++ linux-4.9/arch/ia64/kernel/traps.c  2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/m32r/kernel/traps.c linux-4.9/arch/m32r/kernel/traps.c
 309 --- linux-4.9/arch/m32r/kernel/traps.c  2016-12-11 20:17:54.000000000 +0100
 310 +++ linux-4.9/arch/m32r/kernel/traps.c  2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/m68k/Kconfig linux-4.9/arch/m68k/Kconfig
 324 --- linux-4.9/arch/m68k/Kconfig 2016-12-11 20:17:54.000000000 +0100
 325 +++ linux-4.9/arch/m68k/Kconfig 2021-02-24 15:47:45.041074656 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/mips/Kconfig linux-4.9/arch/mips/Kconfig
 336 --- linux-4.9/arch/mips/Kconfig 2021-02-24 15:47:30.863964478 +0100
 337 +++ linux-4.9/arch/mips/Kconfig 2021-02-24 15:47:45.044408094 +0100
 338 @@ -3194,6 +3194,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/mips/kernel/ptrace.c linux-4.9/arch/mips/kernel/ptrace.c
 348 --- linux-4.9/arch/mips/kernel/ptrace.c 2021-02-24 15:47:30.880631666 +0100
 349 +++ linux-4.9/arch/mips/kernel/ptrace.c 2021-02-24 15:47:45.044408094 +0100
 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 @@ -798,6 +799,9 @@ 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 -urNp -x '*.orig' linux-4.9/arch/mips/kernel/scall32-o32.S linux-4.9/arch/mips/kernel/scall32-o32.S
 369 --- linux-4.9/arch/mips/kernel/scall32-o32.S    2021-02-24 15:47:30.880631666 +0100
 370 +++ linux-4.9/arch/mips/kernel/scall32-o32.S    2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/mips/kernel/scall64-64.S linux-4.9/arch/mips/kernel/scall64-64.S
 381 --- linux-4.9/arch/mips/kernel/scall64-64.S     2021-02-24 15:47:30.880631666 +0100
 382 +++ linux-4.9/arch/mips/kernel/scall64-64.S     2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/mips/kernel/scall64-n32.S linux-4.9/arch/mips/kernel/scall64-n32.S
 393 --- linux-4.9/arch/mips/kernel/scall64-n32.S    2021-02-24 15:47:30.880631666 +0100
 394 +++ linux-4.9/arch/mips/kernel/scall64-n32.S    2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/mips/kernel/scall64-o32.S linux-4.9/arch/mips/kernel/scall64-o32.S
 405 --- linux-4.9/arch/mips/kernel/scall64-o32.S    2021-02-24 15:47:30.880631666 +0100
 406 +++ linux-4.9/arch/mips/kernel/scall64-o32.S    2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/mips/kernel/traps.c linux-4.9/arch/mips/kernel/traps.c
 417 --- linux-4.9/arch/mips/kernel/traps.c  2021-02-24 15:47:30.880631666 +0100
 418 +++ linux-4.9/arch/mips/kernel/traps.c  2021-02-24 15:47:45.044408094 +0100
 419 @@ -361,9 +361,10 @@ 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 -urNp -x '*.orig' linux-4.9/arch/parisc/Kconfig linux-4.9/arch/parisc/Kconfig
 434 --- linux-4.9/arch/parisc/Kconfig       2021-02-24 15:47:30.893965417 +0100
 435 +++ linux-4.9/arch/parisc/Kconfig       2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/parisc/kernel/syscall_table.S linux-4.9/arch/parisc/kernel/syscall_table.S
 446 --- linux-4.9/arch/parisc/kernel/syscall_table.S        2021-02-24 15:47:30.897298854 +0100
 447 +++ linux-4.9/arch/parisc/kernel/syscall_table.S        2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/parisc/kernel/traps.c linux-4.9/arch/parisc/kernel/traps.c
 458 --- linux-4.9/arch/parisc/kernel/traps.c        2021-02-24 15:47:30.897298854 +0100
 459 +++ linux-4.9/arch/parisc/kernel/traps.c        2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/powerpc/Kconfig linux-4.9/arch/powerpc/Kconfig
 484 --- linux-4.9/arch/powerpc/Kconfig      2021-02-24 15:47:30.900632291 +0100
 485 +++ linux-4.9/arch/powerpc/Kconfig      2021-02-24 15:47:45.044408094 +0100
 486 @@ -1092,6 +1092,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/powerpc/include/uapi/asm/unistd.h linux-4.9/arch/powerpc/include/uapi/asm/unistd.h
 496 --- linux-4.9/arch/powerpc/include/uapi/asm/unistd.h    2016-12-11 20:17:54.000000000 +0100
 497 +++ linux-4.9/arch/powerpc/include/uapi/asm/unistd.h    2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/s390/Kconfig linux-4.9/arch/s390/Kconfig
 508 --- linux-4.9/arch/s390/Kconfig 2021-02-24 15:47:30.947300418 +0100
 509 +++ linux-4.9/arch/s390/Kconfig 2021-02-24 15:47:45.044408094 +0100
 510 @@ -775,6 +775,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/s390/include/asm/tlb.h linux-4.9/arch/s390/include/asm/tlb.h
 520 --- linux-4.9/arch/s390/include/asm/tlb.h       2016-12-11 20:17:54.000000000 +0100
 521 +++ linux-4.9/arch/s390/include/asm/tlb.h       2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/s390/include/uapi/asm/unistd.h linux-4.9/arch/s390/include/uapi/asm/unistd.h
 531 --- linux-4.9/arch/s390/include/uapi/asm/unistd.h       2016-12-11 20:17:54.000000000 +0100
 532 +++ linux-4.9/arch/s390/include/uapi/asm/unistd.h       2021-02-24 15:47:45.044408094 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/s390/kernel/ptrace.c linux-4.9/arch/s390/kernel/ptrace.c
 543 --- linux-4.9/arch/s390/kernel/ptrace.c 2021-02-24 15:47:30.957300731 +0100
 544 +++ linux-4.9/arch/s390/kernel/ptrace.c 2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/s390/kernel/syscalls.S linux-4.9/arch/s390/kernel/syscalls.S
 554 --- linux-4.9/arch/s390/kernel/syscalls.S       2021-02-24 15:47:30.960634169 +0100
 555 +++ linux-4.9/arch/s390/kernel/syscalls.S       2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/sh/Kconfig linux-4.9/arch/sh/Kconfig
 566 --- linux-4.9/arch/sh/Kconfig   2016-12-11 20:17:54.000000000 +0100
 567 +++ linux-4.9/arch/sh/Kconfig   2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/sh/kernel/irq.c linux-4.9/arch/sh/kernel/irq.c
 578 --- linux-4.9/arch/sh/kernel/irq.c      2016-12-11 20:17:54.000000000 +0100
 579 +++ linux-4.9/arch/sh/kernel/irq.c      2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/sparc/Kconfig linux-4.9/arch/sparc/Kconfig
 589 --- linux-4.9/arch/sparc/Kconfig        2021-02-24 15:47:30.967301044 +0100
 590 +++ linux-4.9/arch/sparc/Kconfig        2021-02-24 15:47:45.047741532 +0100
 591 @@ -584,6 +584,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/sparc/include/uapi/asm/unistd.h linux-4.9/arch/sparc/include/uapi/asm/unistd.h
 601 --- linux-4.9/arch/sparc/include/uapi/asm/unistd.h      2016-12-11 20:17:54.000000000 +0100
 602 +++ linux-4.9/arch/sparc/include/uapi/asm/unistd.h      2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/sparc/kernel/systbls_32.S linux-4.9/arch/sparc/kernel/systbls_32.S
 613 --- linux-4.9/arch/sparc/kernel/systbls_32.S    2016-12-11 20:17:54.000000000 +0100
 614 +++ linux-4.9/arch/sparc/kernel/systbls_32.S    2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/sparc/kernel/systbls_64.S linux-4.9/arch/sparc/kernel/systbls_64.S
 625 --- linux-4.9/arch/sparc/kernel/systbls_64.S    2016-12-11 20:17:54.000000000 +0100
 626 +++ linux-4.9/arch/sparc/kernel/systbls_64.S    2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/um/Kconfig.rest linux-4.9/arch/um/Kconfig.rest
 646 --- linux-4.9/arch/um/Kconfig.rest      2016-12-11 20:17:54.000000000 +0100
 647 +++ linux-4.9/arch/um/Kconfig.rest      2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/x86/Kconfig linux-4.9/arch/x86/Kconfig
 658 --- linux-4.9/arch/x86/Kconfig  2021-02-24 15:47:30.980634795 +0100
 659 +++ linux-4.9/arch/x86/Kconfig  2021-02-24 15:47:45.047741532 +0100
 660 @@ -2810,6 +2810,8 @@ 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 -urNp -x '*.orig' linux-4.9/arch/x86/entry/syscalls/syscall_32.tbl linux-4.9/arch/x86/entry/syscalls/syscall_32.tbl
 670 --- linux-4.9/arch/x86/entry/syscalls/syscall_32.tbl    2016-12-11 20:17:54.000000000 +0100
 671 +++ linux-4.9/arch/x86/entry/syscalls/syscall_32.tbl    2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/arch/x86/entry/syscalls/syscall_64.tbl linux-4.9/arch/x86/entry/syscalls/syscall_64.tbl
 682 --- linux-4.9/arch/x86/entry/syscalls/syscall_64.tbl    2016-12-11 20:17:54.000000000 +0100
 683 +++ linux-4.9/arch/x86/entry/syscalls/syscall_64.tbl    2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/block/ioprio.c linux-4.9/block/ioprio.c
 694 --- linux-4.9/block/ioprio.c    2016-12-11 20:17:54.000000000 +0100
 695 +++ linux-4.9/block/ioprio.c    2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/drivers/block/Kconfig linux-4.9/drivers/block/Kconfig
 723 --- linux-4.9/drivers/block/Kconfig     2021-02-24 15:47:31.113972298 +0100
 724 +++ linux-4.9/drivers/block/Kconfig     2021-02-24 15:47:45.047741532 +0100
 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 -urNp -x '*.orig' linux-4.9/drivers/block/Makefile linux-4.9/drivers/block/Makefile
 740 --- linux-4.9/drivers/block/Makefile    2016-12-11 20:17:54.000000000 +0100
 741 +++ linux-4.9/drivers/block/Makefile    2021-02-24 15:47:45.051074969 +0100
 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 -urNp -x '*.orig' linux-4.9/drivers/block/loop.c linux-4.9/drivers/block/loop.c
 751 --- linux-4.9/drivers/block/loop.c      2021-02-24 15:47:31.117305737 +0100
 752 +++ linux-4.9/drivers/block/loop.c      2021-02-24 15:47:45.051074969 +0100
 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 @@ -936,6 +937,7 @@ 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 @@ -1056,6 +1058,7 @@ 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 @@ -1102,7 +1105,7 @@ 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 @@ -1207,7 +1210,8 @@ 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 @@ -1569,6 +1573,11 @@ 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 -urNp -x '*.orig' linux-4.9/drivers/block/loop.h linux-4.9/drivers/block/loop.h
 809 --- linux-4.9/drivers/block/loop.h      2021-02-24 15:47:31.117305737 +0100
 810 +++ linux-4.9/drivers/block/loop.h      2021-02-24 15:47:45.051074969 +0100
 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 -urNp -x '*.orig' linux-4.9/drivers/block/vroot.c linux-4.9/drivers/block/vroot.c
 820 --- linux-4.9/drivers/block/vroot.c     1970-01-01 01:00:00.000000000 +0100
 821 +++ linux-4.9/drivers/block/vroot.c     2021-02-24 15:47:45.051074969 +0100
 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 -urNp -x '*.orig' linux-4.9/drivers/md/dm-core.h linux-4.9/drivers/md/dm-core.h
1115 --- linux-4.9/drivers/md/dm-core.h      2021-02-24 15:47:31.450649498 +0100
1116 +++ linux-4.9/drivers/md/dm-core.h      2021-02-24 15:47:45.051074969 +0100
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 -urNp -x '*.orig' linux-4.9/drivers/md/dm-ioctl.c linux-4.9/drivers/md/dm-ioctl.c
1126 --- linux-4.9/drivers/md/dm-ioctl.c     2021-02-24 15:47:31.450649498 +0100
1127 +++ linux-4.9/drivers/md/dm-ioctl.c     2021-02-24 15:47:45.051074969 +0100
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 @@ -1800,8 +1812,8 @@ 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 -urNp -x '*.orig' linux-4.9/drivers/md/dm.c linux-4.9/drivers/md/dm.c
1214 --- linux-4.9/drivers/md/dm.c   2021-02-24 15:47:31.457316373 +0100
1215 +++ linux-4.9/drivers/md/dm.c   2021-02-24 15:47:45.051074969 +0100
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 @@ -1549,6 +1561,7 @@ 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 -urNp -x '*.orig' linux-4.9/drivers/md/dm.h linux-4.9/drivers/md/dm.h
1281 --- linux-4.9/drivers/md/dm.h   2016-12-11 20:17:54.000000000 +0100
1282 +++ linux-4.9/drivers/md/dm.h   2021-02-24 15:47:45.051074969 +0100
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 -urNp -x '*.orig' linux-4.9/drivers/net/tun.c linux-4.9/drivers/net/tun.c
1293 --- linux-4.9/drivers/net/tun.c 2021-02-24 15:47:31.743992008 +0100
1294 +++ linux-4.9/drivers/net/tun.c 2021-02-24 15:47:45.051074969 +0100
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 @@ -1569,6 +1572,7 @@ 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 @@ -1782,7 +1786,7 @@ 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 @@ -2151,6 +2155,16 @@ 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 -urNp -x '*.orig' linux-4.9/drivers/scsi/cxgbi/libcxgbi.c linux-4.9/drivers/scsi/cxgbi/libcxgbi.c
1354 --- linux-4.9/drivers/scsi/cxgbi/libcxgbi.c     2021-02-24 15:47:31.947331702 +0100
1355 +++ linux-4.9/drivers/scsi/cxgbi/libcxgbi.c     2021-02-24 15:47:45.051074969 +0100
1356 @@ -777,7 +777,8 @@ 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 -urNp -x '*.orig' linux-4.9/drivers/tty/sysrq.c linux-4.9/drivers/tty/sysrq.c
1367 --- linux-4.9/drivers/tty/sysrq.c       2021-02-24 15:47:32.084002644 +0100
1368 +++ linux-4.9/drivers/tty/sysrq.c       2021-02-24 15:47:45.051074969 +0100
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 -urNp -x '*.orig' linux-4.9/drivers/tty/tty_io.c linux-4.9/drivers/tty/tty_io.c
1421 --- linux-4.9/drivers/tty/tty_io.c      2021-02-24 15:47:32.084002644 +0100
1422 +++ linux-4.9/drivers/tty/tty_io.c      2021-02-24 15:47:45.054408406 +0100
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 @@ -2321,7 +2322,8 @@ 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 @@ -2634,6 +2636,7 @@ static int tiocspgrp(struct tty_struct *
1442
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
1449 diff -urNp -x '*.orig' linux-4.9/fs/attr.c linux-4.9/fs/attr.c
1450 --- linux-4.9/fs/attr.c 2016-12-11 20:17:54.000000000 +0100
1451 +++ linux-4.9/fs/attr.c 2021-02-24 15:47:45.054408406 +0100
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 -urNp -x '*.orig' linux-4.9/fs/block_dev.c linux-4.9/fs/block_dev.c
1493 --- linux-4.9/fs/block_dev.c    2021-02-24 15:47:32.207339836 +0100
1494 +++ linux-4.9/fs/block_dev.c    2021-02-24 15:47:45.054408406 +0100
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 @@ -734,6 +735,7 @@ 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 @@ -780,6 +782,11 @@ 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 @@ -790,7 +797,7 @@ 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 -urNp -x '*.orig' linux-4.9/fs/btrfs/ctree.h linux-4.9/fs/btrfs/ctree.h
1533 --- linux-4.9/fs/btrfs/ctree.h  2021-02-24 15:47:32.210673274 +0100
1534 +++ linux-4.9/fs/btrfs/ctree.h  2021-02-24 15:47:45.054408406 +0100
1535 @@ -1319,6 +1319,8 @@ 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 @@ -1669,6 +1671,7 @@ 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 @@ -1716,6 +1719,10 @@ 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 @@ -3199,6 +3206,7 @@ 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 -urNp -x '*.orig' linux-4.9/fs/btrfs/disk-io.c linux-4.9/fs/btrfs/disk-io.c
1572 --- linux-4.9/fs/btrfs/disk-io.c        2021-02-24 15:47:32.210673274 +0100
1573 +++ linux-4.9/fs/btrfs/disk-io.c        2021-02-24 15:47:45.054408406 +0100
1574 @@ -2712,6 +2712,9 @@ 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 -urNp -x '*.orig' linux-4.9/fs/btrfs/inode.c linux-4.9/fs/btrfs/inode.c
1585 --- linux-4.9/fs/btrfs/inode.c  2021-02-24 15:47:32.217340149 +0100
1586 +++ linux-4.9/fs/btrfs/inode.c  2021-02-24 15:47:45.057741845 +0100
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 @@ -3717,6 +3718,9 @@ 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 @@ -3749,8 +3753,14 @@ 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 @@ -3905,11 +3915,18 @@ 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 @@ -10687,6 +10704,7 @@ 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 @@ -10695,6 +10713,7 @@ 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 @@ -10760,6 +10779,7 @@ 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 -urNp -x '*.orig' linux-4.9/fs/btrfs/ioctl.c linux-4.9/fs/btrfs/ioctl.c
1668 --- linux-4.9/fs/btrfs/ioctl.c  2021-02-24 15:47:32.217340149 +0100
1669 +++ linux-4.9/fs/btrfs/ioctl.c  2021-02-24 15:47:45.057741845 +0100
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 -urNp -x '*.orig' linux-4.9/fs/btrfs/super.c linux-4.9/fs/btrfs/super.c
1849 --- linux-4.9/fs/btrfs/super.c  2021-02-24 15:47:32.224007024 +0100
1850 +++ linux-4.9/fs/btrfs/super.c  2021-02-24 15:47:45.057741845 +0100
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 @@ -1760,6 +1779,12 @@ 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 -urNp -x '*.orig' linux-4.9/fs/char_dev.c linux-4.9/fs/char_dev.c
1907 --- linux-4.9/fs/char_dev.c     2021-02-24 15:47:32.230673899 +0100
1908 +++ linux-4.9/fs/char_dev.c     2021-02-24 15:47:45.057741845 +0100
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 @@ -360,14 +362,21 @@ 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 -urNp -x '*.orig' linux-4.9/fs/dcache.c linux-4.9/fs/dcache.c
1942 --- linux-4.9/fs/dcache.c       2021-02-24 15:47:32.247341088 +0100
1943 +++ linux-4.9/fs/dcache.c       2021-02-24 15:47:45.061075282 +0100
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 @@ -690,6 +691,7 @@ 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 @@ -821,6 +823,7 @@ 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 @@ -838,6 +841,7 @@ 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 @@ -850,6 +854,8 @@ 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 @@ -880,6 +886,7 @@ 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 @@ -1034,6 +1041,7 @@ 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 @@ -1594,6 +1602,9 @@ 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 @@ -1637,6 +1648,7 @@ 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 @@ -2310,6 +2322,7 @@ 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 @@ -3568,6 +3581,7 @@ 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 -urNp -x '*.orig' linux-4.9/fs/devpts/inode.c linux-4.9/fs/devpts/inode.c
2036 --- linux-4.9/fs/devpts/inode.c 2021-02-24 15:47:32.247341088 +0100
2037 +++ linux-4.9/fs/devpts/inode.c 2021-02-24 15:47:45.061075282 +0100
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 @@ -416,8 +460,10 @@ 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 @@ -543,6 +589,9 @@ 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 -urNp -x '*.orig' linux-4.9/fs/ext2/balloc.c linux-4.9/fs/ext2/balloc.c
2126 --- linux-4.9/fs/ext2/balloc.c  2016-12-11 20:17:54.000000000 +0100
2127 +++ linux-4.9/fs/ext2/balloc.c  2021-02-24 15:47:45.061075282 +0100
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 -urNp -x '*.orig' linux-4.9/fs/ext2/ext2.h linux-4.9/fs/ext2/ext2.h
2137 --- linux-4.9/fs/ext2/ext2.h    2016-12-11 20:17:54.000000000 +0100
2138 +++ linux-4.9/fs/ext2/ext2.h    2021-02-24 15:47:45.061075282 +0100
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 -urNp -x '*.orig' linux-4.9/fs/ext2/file.c linux-4.9/fs/ext2/file.c
2187 --- linux-4.9/fs/ext2/file.c    2016-12-11 20:17:54.000000000 +0100
2188 +++ linux-4.9/fs/ext2/file.c    2021-02-24 15:47:45.061075282 +0100
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 -urNp -x '*.orig' linux-4.9/fs/ext2/ialloc.c linux-4.9/fs/ext2/ialloc.c
2196 --- linux-4.9/fs/ext2/ialloc.c  2021-02-24 15:47:32.254007963 +0100
2197 +++ linux-4.9/fs/ext2/ialloc.c  2021-02-24 15:47:45.061075282 +0100
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 @@ -552,6 +553,7 @@ 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 -urNp -x '*.orig' linux-4.9/fs/ext2/inode.c linux-4.9/fs/ext2/inode.c
2215 --- linux-4.9/fs/ext2/inode.c   2021-02-24 15:47:32.254007963 +0100
2216 +++ linux-4.9/fs/ext2/inode.c   2021-02-24 15:47:45.061075282 +0100
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 @@ -1360,39 +1361,61 @@ void ext2_set_inode_flags(struct inode *
2226  {
2227         unsigned int flags = EXT2_I(inode)->i_flags;
2228
2229 -       inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
2230 -                               S_DIRSYNC | S_DAX);
2231 +       inode->i_flags &= ~(S_IMMUTABLE | S_IXUNLINK | S_DAX |
2232 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
2233 +
2234 +       if (flags & EXT2_IMMUTABLE_FL)
2235 +               inode->i_flags |= S_IMMUTABLE;
2236 +       if (flags & EXT2_IXUNLINK_FL)
2237 +               inode->i_flags |= S_IXUNLINK;
2238         if (flags & EXT2_SYNC_FL)
2239                 inode->i_flags |= S_SYNC;
2240         if (flags & EXT2_APPEND_FL)
2241                 inode->i_flags |= S_APPEND;
2242 -       if (flags & EXT2_IMMUTABLE_FL)
2243 -               inode->i_flags |= S_IMMUTABLE;
2244         if (flags & EXT2_NOATIME_FL)
2245                 inode->i_flags |= S_NOATIME;
2246         if (flags & EXT2_DIRSYNC_FL)
2247                 inode->i_flags |= S_DIRSYNC;
2248         if (test_opt(inode->i_sb, DAX) && S_ISREG(inode->i_mode))
2249                 inode->i_flags |= S_DAX;
2250 +
2251 +       inode->i_vflags &= ~(V_BARRIER | V_COW);
2252 +
2253 +       if (flags & EXT2_BARRIER_FL)
2254 +               inode->i_vflags |= V_BARRIER;
2255 +       if (flags & EXT2_COW_FL)
2256 +               inode->i_vflags |= V_COW;
2257  }
2258
2259  /* Propagate flags from i_flags to EXT2_I(inode)->i_flags */
2260  void ext2_get_inode_flags(struct ext2_inode_info *ei)
2261  {
2262         unsigned int flags = ei->vfs_inode.i_flags;
2263 +       unsigned int vflags = ei->vfs_inode.i_vflags;
2264 +
2265 +       ei->i_flags &= ~(EXT2_SYNC_FL | EXT2_APPEND_FL |
2266 +                       EXT2_IMMUTABLE_FL | EXT2_IXUNLINK_FL |
2267 +                       EXT2_NOATIME_FL | EXT2_DIRSYNC_FL |
2268 +                       EXT2_BARRIER_FL | EXT2_COW_FL);
2269 +
2270 +       if (flags & S_IMMUTABLE)
2271 +               ei->i_flags |= EXT2_IMMUTABLE_FL;
2272 +       if (flags & S_IXUNLINK)
2273 +               ei->i_flags |= EXT2_IXUNLINK_FL;
2274
2275 -       ei->i_flags &= ~(EXT2_SYNC_FL|EXT2_APPEND_FL|
2276 -                       EXT2_IMMUTABLE_FL|EXT2_NOATIME_FL|EXT2_DIRSYNC_FL);
2277         if (flags & S_SYNC)
2278                 ei->i_flags |= EXT2_SYNC_FL;
2279         if (flags & S_APPEND)
2280                 ei->i_flags |= EXT2_APPEND_FL;
2281 -       if (flags & S_IMMUTABLE)
2282 -               ei->i_flags |= EXT2_IMMUTABLE_FL;
2283         if (flags & S_NOATIME)
2284                 ei->i_flags |= EXT2_NOATIME_FL;
2285         if (flags & S_DIRSYNC)
2286                 ei->i_flags |= EXT2_DIRSYNC_FL;
2287 +
2288 +       if (vflags & V_BARRIER)
2289 +               ei->i_flags |= EXT2_BARRIER_FL;
2290 +       if (vflags & V_COW)
2291 +               ei->i_flags |= EXT2_COW_FL;
2292  }
2293
2294  struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
2295 @@ -1428,8 +1451,10 @@ struct inode *ext2_iget (struct super_bl
2296                 i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
2297                 i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
2298         }
2299 -       i_uid_write(inode, i_uid);
2300 -       i_gid_write(inode, i_gid);
2301 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), i_uid, i_gid));
2302 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), i_uid, i_gid));
2303 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), i_uid, i_gid,
2304 +               le16_to_cpu(raw_inode->i_raw_tag)));
2305         set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
2306         inode->i_size = le32_to_cpu(raw_inode->i_size);
2307         inode->i_atime.tv_sec = (signed)le32_to_cpu(raw_inode->i_atime);
2308 @@ -1536,8 +1561,10 @@ static int __ext2_write_inode(struct ino
2309         struct ext2_inode_info *ei = EXT2_I(inode);
2310         struct super_block *sb = inode->i_sb;
2311         ino_t ino = inode->i_ino;
2312 -       uid_t uid = i_uid_read(inode);
2313 -       gid_t gid = i_gid_read(inode);
2314 +       uid_t uid = from_kuid(&init_user_ns,
2315 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
2316 +       gid_t gid = from_kgid(&init_user_ns,
2317 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
2318         struct buffer_head * bh;
2319         struct ext2_inode * raw_inode = ext2_get_inode(sb, ino, &bh);
2320         int n;
2321 @@ -1573,6 +1600,9 @@ static int __ext2_write_inode(struct ino
2322                 raw_inode->i_uid_high = 0;
2323                 raw_inode->i_gid_high = 0;
2324         }
2325 +#ifdef CONFIG_TAGGING_INTERN
2326 +       raw_inode->i_raw_tag = cpu_to_le16(i_tag_read(inode));
2327 +#endif
2328         raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
2329         raw_inode->i_size = cpu_to_le32(inode->i_size);
2330         raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
2331 @@ -1656,7 +1686,8 @@ int ext2_setattr(struct dentry *dentry,
2332                         return error;
2333         }
2334         if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
2335 -           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
2336 +           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid)) ||
2337 +           (iattr->ia_valid & ATTR_TAG && !tag_eq(iattr->ia_tag, inode->i_tag))) {
2338                 error = dquot_transfer(inode, iattr);
2339                 if (error)
2340                         return error;
2341 diff -urNp -x '*.orig' linux-4.9/fs/ext2/ioctl.c linux-4.9/fs/ext2/ioctl.c
2342 --- linux-4.9/fs/ext2/ioctl.c   2016-12-11 20:17:54.000000000 +0100
2343 +++ linux-4.9/fs/ext2/ioctl.c   2021-02-24 15:47:45.061075282 +0100
2344 @@ -17,6 +17,16 @@
2345  #include <asm/uaccess.h>
2346
2347
2348 +int ext2_sync_flags(struct inode *inode, int flags, int vflags)
2349 +{
2350 +       inode->i_flags = flags;
2351 +       inode->i_vflags = vflags;
2352 +       ext2_get_inode_flags(EXT2_I(inode));
2353 +       inode->i_ctime = CURRENT_TIME_SEC;
2354 +       mark_inode_dirty(inode);
2355 +       return 0;
2356 +}
2357 +
2358  long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2359  {
2360         struct inode *inode = file_inode(filp);
2361 @@ -51,6 +61,11 @@ long ext2_ioctl(struct file *filp, unsig
2362
2363                 flags = ext2_mask_flags(inode->i_mode, flags);
2364
2365 +               if (IS_BARRIER(inode)) {
2366 +                       vxwprintk_task(1, "messing with the barrier.");
2367 +                       return -EACCES;
2368 +               }
2369 +
2370                 inode_lock(inode);
2371                 /* Is it quota file? Do not allow user to mess with it */
2372                 if (IS_NOQUOTA(inode)) {
2373 @@ -66,7 +81,9 @@ long ext2_ioctl(struct file *filp, unsig
2374                  *
2375                  * This test looks nicer. Thanks to Pauline Middelink
2376                  */
2377 -               if ((flags ^ oldflags) & (EXT2_APPEND_FL | EXT2_IMMUTABLE_FL)) {
2378 +               if ((oldflags & EXT2_IMMUTABLE_FL) ||
2379 +                       ((flags ^ oldflags) & (EXT2_APPEND_FL |
2380 +                       EXT2_IMMUTABLE_FL | EXT2_IXUNLINK_FL))) {
2381                         if (!capable(CAP_LINUX_IMMUTABLE)) {
2382                                 inode_unlock(inode);
2383                                 ret = -EPERM;
2384 @@ -74,7 +91,7 @@ long ext2_ioctl(struct file *filp, unsig
2385                         }
2386                 }
2387
2388 -               flags = flags & EXT2_FL_USER_MODIFIABLE;
2389 +               flags &= EXT2_FL_USER_MODIFIABLE;
2390                 flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE;
2391                 ei->i_flags = flags;
2392
2393 diff -urNp -x '*.orig' linux-4.9/fs/ext2/namei.c linux-4.9/fs/ext2/namei.c
2394 --- linux-4.9/fs/ext2/namei.c   2021-02-24 15:47:32.254007963 +0100
2395 +++ linux-4.9/fs/ext2/namei.c   2021-02-24 15:47:45.061075282 +0100
2396 @@ -32,6 +32,7 @@
2397
2398  #include <linux/pagemap.h>
2399  #include <linux/quotaops.h>
2400 +#include <linux/vs_tag.h>
2401  #include "ext2.h"
2402  #include "xattr.h"
2403  #include "acl.h"
2404 @@ -71,6 +72,7 @@ static struct dentry *ext2_lookup(struct
2405                                         (unsigned long) ino);
2406                         return ERR_PTR(-EIO);
2407                 }
2408 +               dx_propagate_tag(nd, inode);
2409         }
2410         return d_splice_alias(inode, dentry);
2411  }
2412 @@ -443,6 +445,7 @@ const struct inode_operations ext2_speci
2413         .listxattr      = ext2_listxattr,
2414  #endif
2415         .setattr        = ext2_setattr,
2416 +       .sync_flags     = ext2_sync_flags,
2417         .get_acl        = ext2_get_acl,
2418         .set_acl        = ext2_set_acl,
2419  };
2420 diff -urNp -x '*.orig' linux-4.9/fs/ext2/super.c linux-4.9/fs/ext2/super.c
2421 --- linux-4.9/fs/ext2/super.c   2021-02-24 15:47:32.254007963 +0100
2422 +++ linux-4.9/fs/ext2/super.c   2021-02-24 15:47:45.061075282 +0100
2423 @@ -411,7 +411,8 @@ enum {
2424         Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug,
2425         Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
2426         Opt_acl, Opt_noacl, Opt_xip, Opt_dax, Opt_ignore, Opt_err, Opt_quota,
2427 -       Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation
2428 +       Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation,
2429 +       Opt_tag, Opt_notag, Opt_tagid
2430  };
2431
2432  static const match_table_t tokens = {
2433 @@ -439,6 +440,9 @@ static const match_table_t tokens = {
2434         {Opt_acl, "acl"},
2435         {Opt_noacl, "noacl"},
2436         {Opt_xip, "xip"},
2437 +       {Opt_tag, "tag"},
2438 +       {Opt_notag, "notag"},
2439 +       {Opt_tagid, "tagid=%u"},
2440         {Opt_dax, "dax"},
2441         {Opt_grpquota, "grpquota"},
2442         {Opt_ignore, "noquota"},
2443 @@ -523,6 +527,20 @@ static int parse_options(char *options,
2444                 case Opt_nouid32:
2445                         set_opt (sbi->s_mount_opt, NO_UID32);
2446                         break;
2447 +#ifndef CONFIG_TAGGING_NONE
2448 +               case Opt_tag:
2449 +                       set_opt (sbi->s_mount_opt, TAGGED);
2450 +                       break;
2451 +               case Opt_notag:
2452 +                       clear_opt (sbi->s_mount_opt, TAGGED);
2453 +                       break;
2454 +#endif
2455 +#ifdef CONFIG_PROPAGATE
2456 +               case Opt_tagid:
2457 +                       /* use args[0] */
2458 +                       set_opt (sbi->s_mount_opt, TAGGED);
2459 +                       break;
2460 +#endif
2461                 case Opt_nocheck:
2462                         clear_opt (sbi->s_mount_opt, CHECK);
2463                         break;
2464 @@ -898,6 +916,8 @@ static int ext2_fill_super(struct super_
2465         if (!parse_options((char *) data, sb))
2466                 goto failed_mount;
2467
2468 +       if (EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_TAGGED)
2469 +               sb->s_flags |= MS_TAGGED;
2470         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2471                 ((EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ?
2472                  MS_POSIXACL : 0);
2473 @@ -1311,6 +1331,14 @@ static int ext2_remount (struct super_bl
2474                 err = -EINVAL;
2475                 goto restore_opts;
2476         }
2477 +
2478 +       if ((sbi->s_mount_opt & EXT2_MOUNT_TAGGED) &&
2479 +               !(sb->s_flags & MS_TAGGED)) {
2480 +               printk("EXT2-fs: %s: tagging not permitted on remount.\n",
2481 +                      sb->s_id);
2482 +               err = -EINVAL;
2483 +               goto restore_opts;
2484 +       }
2485
2486         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2487                 ((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
2488 diff -urNp -x '*.orig' linux-4.9/fs/ext4/ext4.h linux-4.9/fs/ext4/ext4.h
2489 --- linux-4.9/fs/ext4/ext4.h    2021-02-24 15:47:32.254007963 +0100
2490 +++ linux-4.9/fs/ext4/ext4.h    2021-02-24 15:47:45.064408719 +0100
2491 @@ -392,8 +392,11 @@ struct flex_groups {
2492  #define EXT4_EXTENTS_FL                        0x00080000 /* Inode uses extents */
2493  #define EXT4_EA_INODE_FL               0x00200000 /* Inode used for large EA */
2494  #define EXT4_EOFBLOCKS_FL              0x00400000 /* Blocks allocated beyond EOF */
2495 +#define EXT4_BARRIER_FL                        0x04000000 /* Barrier for chroot() */
2496 +#define EXT4_IXUNLINK_FL               0x08000000 /* Immutable invert on unlink */
2497  #define EXT4_INLINE_DATA_FL            0x10000000 /* Inode has inline data. */
2498  #define EXT4_PROJINHERIT_FL            0x20000000 /* Create with parents projid */
2499 +#define EXT4_COW_FL                    0x40000000 /* Copy on Write marker */
2500  #define EXT4_RESERVED_FL               0x80000000 /* reserved for ext4 lib */
2501
2502  #define EXT4_FL_USER_VISIBLE           0x304BDFFF /* User visible flags */
2503 @@ -735,7 +738,7 @@ struct ext4_inode {
2504                         __le16  l_i_uid_high;   /* these 2 fields */
2505                         __le16  l_i_gid_high;   /* were reserved2[0] */
2506                         __le16  l_i_checksum_lo;/* crc32c(uuid+inum+inode) LE */
2507 -                       __le16  l_i_reserved;
2508 +                       __le16  l_i_tag;        /* Context Tag */
2509                 } linux2;
2510                 struct {
2511                         __le16  h_i_reserved1;  /* Obsoleted fragment number/size which are removed in ext4 */
2512 @@ -892,6 +895,7 @@ do {                                                                               \
2513  #define i_gid_low      i_gid
2514  #define i_uid_high     osd2.linux2.l_i_uid_high
2515  #define i_gid_high     osd2.linux2.l_i_gid_high
2516 +#define i_raw_tag      osd2.linux2.l_i_tag
2517  #define i_checksum_lo  osd2.linux2.l_i_checksum_lo
2518
2519  #elif defined(__GNU__)
2520 @@ -1133,6 +1137,7 @@ struct ext4_inode_info {
2521  #define EXT4_MOUNT_DIOREAD_NOLOCK      0x400000 /* Enable support for dio read nolocking */
2522  #define EXT4_MOUNT_JOURNAL_CHECKSUM    0x800000 /* Journal checksums */
2523  #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT        0x1000000 /* Journal Async Commit */
2524 +#define EXT4_MOUNT_TAGGED              0x2000000 /* Enable Context Tags */
2525  #define EXT4_MOUNT_DELALLOC            0x8000000 /* Delalloc support */
2526  #define EXT4_MOUNT_DATA_ERR_ABORT      0x10000000 /* Abort on file data write */
2527  #define EXT4_MOUNT_BLOCK_VALIDITY      0x20000000 /* Block validity checking */
2528 @@ -2527,6 +2532,7 @@ extern int ext4_punch_hole(struct inode
2529  extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks);
2530  extern void ext4_set_inode_flags(struct inode *);
2531  extern void ext4_get_inode_flags(struct ext4_inode_info *);
2532 +extern int ext4_sync_flags(struct inode *, int, int);
2533  extern int ext4_alloc_da_blocks(struct inode *inode);
2534  extern void ext4_set_aops(struct inode *inode);
2535  extern int ext4_writepage_trans_blocks(struct inode *);
2536 diff -urNp -x '*.orig' linux-4.9/fs/ext4/file.c linux-4.9/fs/ext4/file.c
2537 --- linux-4.9/fs/ext4/file.c    2021-02-24 15:47:32.257341400 +0100
2538 +++ linux-4.9/fs/ext4/file.c    2021-02-24 15:47:45.064408719 +0100
2539 @@ -698,5 +698,6 @@ const struct inode_operations ext4_file_
2540         .get_acl        = ext4_get_acl,
2541         .set_acl        = ext4_set_acl,
2542         .fiemap         = ext4_fiemap,
2543 +       .sync_flags     = ext4_sync_flags,
2544  };
2545
2546 diff -urNp -x '*.orig' linux-4.9/fs/ext4/ialloc.c linux-4.9/fs/ext4/ialloc.c
2547 --- linux-4.9/fs/ext4/ialloc.c  2021-02-24 15:47:32.257341400 +0100
2548 +++ linux-4.9/fs/ext4/ialloc.c  2021-02-24 15:47:45.064408719 +0100
2549 @@ -21,6 +21,7 @@
2550  #include <linux/random.h>
2551  #include <linux/bitops.h>
2552  #include <linux/blkdev.h>
2553 +#include <linux/vs_tag.h>
2554  #include <asm/byteorder.h>
2555
2556  #include "ext4.h"
2557 @@ -780,6 +781,7 @@ struct inode *__ext4_new_inode(handle_t
2558                 inode->i_mode = mode;
2559                 inode->i_uid = current_fsuid();
2560                 inode->i_gid = dir->i_gid;
2561 +               i_tag_write(inode, dx_current_fstag(sb));
2562         } else
2563                 inode_init_owner(inode, dir, mode);
2564
2565 diff -urNp -x '*.orig' linux-4.9/fs/ext4/inode.c linux-4.9/fs/ext4/inode.c
2566 --- linux-4.9/fs/ext4/inode.c   2021-02-24 15:47:32.260674838 +0100
2567 +++ linux-4.9/fs/ext4/inode.c   2021-02-24 15:47:45.064408719 +0100
2568 @@ -37,6 +37,7 @@
2569  #include <linux/printk.h>
2570  #include <linux/slab.h>
2571  #include <linux/bitops.h>
2572 +#include <linux/vs_tag.h>
2573
2574  #include "ext4_jbd2.h"
2575  #include "xattr.h"
2576 @@ -4399,12 +4400,15 @@ void ext4_set_inode_flags(struct inode *
2577         unsigned int flags = EXT4_I(inode)->i_flags;
2578         unsigned int new_fl = 0;
2579
2580 +       if (flags & EXT4_IMMUTABLE_FL)
2581 +               new_fl |= S_IMMUTABLE;
2582 +       if (flags & EXT4_IXUNLINK_FL)
2583 +               new_fl |= S_IXUNLINK;
2584 +
2585         if (flags & EXT4_SYNC_FL)
2586                 new_fl |= S_SYNC;
2587         if (flags & EXT4_APPEND_FL)
2588                 new_fl |= S_APPEND;
2589 -       if (flags & EXT4_IMMUTABLE_FL)
2590 -               new_fl |= S_IMMUTABLE;
2591         if (flags & EXT4_NOATIME_FL)
2592                 new_fl |= S_NOATIME;
2593         if (flags & EXT4_DIRSYNC_FL)
2594 @@ -4412,31 +4416,52 @@ void ext4_set_inode_flags(struct inode *
2595         if (test_opt(inode->i_sb, DAX) && S_ISREG(inode->i_mode))
2596                 new_fl |= S_DAX;
2597         inode_set_flags(inode, new_fl,
2598 -                       S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_DAX);
2599 +               S_IXUNLINK | S_IMMUTABLE | S_DAX |
2600 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
2601 +
2602 +       new_fl = 0;
2603 +       if (flags & EXT4_BARRIER_FL)
2604 +               new_fl |= V_BARRIER;
2605 +       if (flags & EXT4_COW_FL)
2606 +               new_fl |= V_COW;
2607 +
2608 +       set_mask_bits(&inode->i_vflags,
2609 +               V_BARRIER | V_COW, new_fl);
2610  }
2611
2612  /* Propagate flags from i_flags to EXT4_I(inode)->i_flags */
2613  void ext4_get_inode_flags(struct ext4_inode_info *ei)
2614  {
2615 -       unsigned int vfs_fl;
2616 +       unsigned int vfs_fl, vfs_vf;
2617         unsigned long old_fl, new_fl;
2618
2619         do {
2620                 vfs_fl = ei->vfs_inode.i_flags;
2621 +               vfs_vf = ei->vfs_inode.i_vflags;
2622                 old_fl = ei->i_flags;
2623                 new_fl = old_fl & ~(EXT4_SYNC_FL|EXT4_APPEND_FL|
2624                                 EXT4_IMMUTABLE_FL|EXT4_NOATIME_FL|
2625 -                               EXT4_DIRSYNC_FL);
2626 +                               EXT4_DIRSYNC_FL|EXT4_BARRIER_FL|
2627 +                               EXT4_COW_FL);
2628 +
2629 +               if (vfs_fl & S_IMMUTABLE)
2630 +                       new_fl |= EXT4_IMMUTABLE_FL;
2631 +               if (vfs_fl & S_IXUNLINK)
2632 +                       new_fl |= EXT4_IXUNLINK_FL;
2633 +
2634                 if (vfs_fl & S_SYNC)
2635                         new_fl |= EXT4_SYNC_FL;
2636                 if (vfs_fl & S_APPEND)
2637                         new_fl |= EXT4_APPEND_FL;
2638 -               if (vfs_fl & S_IMMUTABLE)
2639 -                       new_fl |= EXT4_IMMUTABLE_FL;
2640                 if (vfs_fl & S_NOATIME)
2641                         new_fl |= EXT4_NOATIME_FL;
2642                 if (vfs_fl & S_DIRSYNC)
2643                         new_fl |= EXT4_DIRSYNC_FL;
2644 +
2645 +               if (vfs_vf & V_BARRIER)
2646 +                       new_fl |= EXT4_BARRIER_FL;
2647 +               if (vfs_vf & V_COW)
2648 +                       new_fl |= EXT4_COW_FL;
2649         } while (cmpxchg(&ei->i_flags, old_fl, new_fl) != old_fl);
2650  }
2651
2652 @@ -4584,8 +4609,10 @@ struct inode *__ext4_iget(struct super_b
2653                 i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
2654                 i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
2655         }
2656 -       i_uid_write(inode, i_uid);
2657 -       i_gid_write(inode, i_gid);
2658 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), i_uid, i_gid));
2659 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), i_uid, i_gid));
2660 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), i_uid, i_gid,
2661 +               le16_to_cpu(raw_inode->i_raw_tag)));
2662         ei->i_projid = make_kprojid(&init_user_ns, i_projid);
2663         set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
2664
2665 @@ -4909,8 +4936,10 @@ static int ext4_do_update_inode(handle_t
2666
2667         ext4_get_inode_flags(ei);
2668         raw_inode->i_mode = cpu_to_le16(inode->i_mode);
2669 -       i_uid = i_uid_read(inode);
2670 -       i_gid = i_gid_read(inode);
2671 +       i_uid = from_kuid(&init_user_ns,
2672 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag));
2673 +       i_gid = from_kgid(&init_user_ns,
2674 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag));
2675         i_projid = from_kprojid(&init_user_ns, ei->i_projid);
2676         if (!(test_opt(inode->i_sb, NO_UID32))) {
2677                 raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
2678 @@ -4934,6 +4963,9 @@ static int ext4_do_update_inode(handle_t
2679                 raw_inode->i_uid_high = 0;
2680                 raw_inode->i_gid_high = 0;
2681         }
2682 +#ifdef CONFIG_TAGGING_INTERN
2683 +       raw_inode->i_raw_tag = cpu_to_le16(i_tag_read(inode));
2684 +#endif
2685         raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
2686
2687         EXT4_INODE_SET_XTIME(i_ctime, inode, raw_inode);
2688 @@ -5191,7 +5223,8 @@ int ext4_setattr(struct dentry *dentry,
2689                         return error;
2690         }
2691         if ((ia_valid & ATTR_UID && !uid_eq(attr->ia_uid, inode->i_uid)) ||
2692 -           (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid))) {
2693 +           (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid)) ||
2694 +           (ia_valid & ATTR_TAG && !tag_eq(attr->ia_tag, inode->i_tag))) {
2695                 handle_t *handle;
2696
2697                 /* (user+group)*(old+new) structure, inode write (sb,
2698 @@ -5214,6 +5247,8 @@ int ext4_setattr(struct dentry *dentry,
2699                         inode->i_uid = attr->ia_uid;
2700                 if (attr->ia_valid & ATTR_GID)
2701                         inode->i_gid = attr->ia_gid;
2702 +               if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
2703 +                       inode->i_tag = attr->ia_tag;
2704                 error = ext4_mark_inode_dirty(handle, inode);
2705                 ext4_journal_stop(handle);
2706         }
2707 diff -urNp -x '*.orig' linux-4.9/fs/ext4/ioctl.c linux-4.9/fs/ext4/ioctl.c
2708 --- linux-4.9/fs/ext4/ioctl.c   2021-02-24 15:47:32.260674838 +0100
2709 +++ linux-4.9/fs/ext4/ioctl.c   2021-02-24 15:47:45.064408719 +0100
2710 @@ -15,6 +15,7 @@
2711  #include <linux/file.h>
2712  #include <linux/quotaops.h>
2713  #include <linux/uuid.h>
2714 +#include <linux/vs_tag.h>
2715  #include <asm/uaccess.h>
2716  #include "ext4_jbd2.h"
2717  #include "ext4.h"
2718 @@ -226,7 +227,9 @@ static int ext4_ioctl_setflags(struct in
2719          *
2720          * This test looks nicer. Thanks to Pauline Middelink
2721          */
2722 -       if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
2723 +       if ((oldflags & EXT4_IMMUTABLE_FL) ||
2724 +               ((flags ^ oldflags) & (EXT4_APPEND_FL |
2725 +               EXT4_IMMUTABLE_FL | EXT4_IXUNLINK_FL))) {
2726                 if (!capable(CAP_LINUX_IMMUTABLE))
2727                         goto flags_out;
2728         }
2729 @@ -432,6 +435,33 @@ static inline unsigned long ext4_xflags_
2730         return iflags;
2731  }
2732
2733 +int ext4_sync_flags(struct inode *inode, int flags, int vflags)
2734 +{
2735 +       handle_t *handle = NULL;
2736 +       struct ext4_iloc iloc;
2737 +       int err;
2738 +
2739 +       handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
2740 +       if (IS_ERR(handle))
2741 +               return PTR_ERR(handle);
2742 +
2743 +       if (IS_SYNC(inode))
2744 +               ext4_handle_sync(handle);
2745 +       err = ext4_reserve_inode_write(handle, inode, &iloc);
2746 +       if (err)
2747 +               goto flags_err;
2748 +
2749 +       inode->i_flags = flags;
2750 +       inode->i_vflags = vflags;
2751 +       ext4_get_inode_flags(EXT4_I(inode));
2752 +       inode->i_ctime = ext4_current_time(inode);
2753 +
2754 +       err = ext4_mark_iloc_dirty(handle, inode, &iloc);
2755 +flags_err:
2756 +       ext4_journal_stop(handle);
2757 +       return err;
2758 +}
2759 +
2760  long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2761  {
2762         struct inode *inode = file_inode(filp);
2763 @@ -461,6 +491,11 @@ long ext4_ioctl(struct file *filp, unsig
2764
2765                 flags = ext4_mask_flags(inode->i_mode, flags);
2766
2767 +               if (IS_BARRIER(inode)) {
2768 +                       vxwprintk_task(1, "messing with the barrier.");
2769 +                       return -EACCES;
2770 +               }
2771 +
2772                 inode_lock(inode);
2773                 err = ext4_ioctl_setflags(inode, flags);
2774                 inode_unlock(inode);
2775 diff -urNp -x '*.orig' linux-4.9/fs/ext4/namei.c linux-4.9/fs/ext4/namei.c
2776 --- linux-4.9/fs/ext4/namei.c   2021-02-24 15:47:32.260674838 +0100
2777 +++ linux-4.9/fs/ext4/namei.c   2021-02-24 15:47:45.064408719 +0100
2778 @@ -33,6 +33,7 @@
2779  #include <linux/quotaops.h>
2780  #include <linux/buffer_head.h>
2781  #include <linux/bio.h>
2782 +#include <linux/vs_tag.h>
2783  #include "ext4.h"
2784  #include "ext4_jbd2.h"
2785
2786 @@ -1457,6 +1458,7 @@ restart:
2787                                                     REQ_META | REQ_PRIO,
2788                                                     1, &bh);
2789                         }
2790 +               dx_propagate_tag(nd, inode);
2791                 }
2792                 if ((bh = bh_use[ra_ptr++]) == NULL)
2793                         goto next;
2794 @@ -3935,6 +3937,7 @@ const struct inode_operations ext4_dir_i
2795         .get_acl        = ext4_get_acl,
2796         .set_acl        = ext4_set_acl,
2797         .fiemap         = ext4_fiemap,
2798 +       .sync_flags     = ext4_sync_flags,
2799  };
2800
2801  const struct inode_operations ext4_special_inode_operations = {
2802 diff -urNp -x '*.orig' linux-4.9/fs/ext4/super.c linux-4.9/fs/ext4/super.c
2803 --- linux-4.9/fs/ext4/super.c   2021-02-24 15:47:32.264008276 +0100
2804 +++ linux-4.9/fs/ext4/super.c   2021-02-24 15:47:45.067742158 +0100
2805 @@ -1294,6 +1294,7 @@ enum {
2806         Opt_dioread_nolock, Opt_dioread_lock,
2807         Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
2808         Opt_max_dir_size_kb, Opt_nojournal_checksum,
2809 +       Opt_tag, Opt_notag, Opt_tagid
2810  };
2811
2812  static const match_table_t tokens = {
2813 @@ -1380,6 +1381,9 @@ static const match_table_t tokens = {
2814         {Opt_removed, "reservation"},   /* mount option from ext2/3 */
2815         {Opt_removed, "noreservation"}, /* mount option from ext2/3 */
2816         {Opt_removed, "journal=%u"},    /* mount option from ext2/3 */
2817 +       {Opt_tag, "tag"},
2818 +       {Opt_notag, "notag"},
2819 +       {Opt_tagid, "tagid=%u"},
2820         {Opt_err, NULL},
2821  };
2822
2823 @@ -1625,6 +1629,20 @@ static int handle_mount_opt(struct super
2824         case Opt_nolazytime:
2825                 sb->s_flags &= ~MS_LAZYTIME;
2826                 return 1;
2827 +#ifndef CONFIG_TAGGING_NONE
2828 +       case Opt_tag:
2829 +               set_opt(sb, TAGGED);
2830 +               return 1;
2831 +       case Opt_notag:
2832 +               clear_opt(sb, TAGGED);
2833 +               return 1;
2834 +#endif
2835 +#ifdef CONFIG_PROPAGATE
2836 +       case Opt_tagid:
2837 +               /* use args[0] */
2838 +               set_opt(sb, TAGGED);
2839 +               return 1;
2840 +#endif
2841         }
2842
2843         for (m = ext4_mount_opts; m->token != Opt_err; m++)
2844 @@ -3645,6 +3663,9 @@ static int ext4_fill_super(struct super_
2845                 sb->s_iflags |= SB_I_CGROUPWB;
2846         }
2847
2848 +       if (EXT4_SB(sb)->s_mount_opt & EXT4_MOUNT_TAGGED)
2849 +               sb->s_flags |= MS_TAGGED;
2850 +
2851         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2852                 (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
2853
2854 @@ -5032,6 +5053,14 @@ static int ext4_remount(struct super_blo
2855         if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED)
2856                 ext4_abort(sb, "Abort forced by user");
2857
2858 +       if ((sbi->s_mount_opt & EXT4_MOUNT_TAGGED) &&
2859 +               !(sb->s_flags & MS_TAGGED)) {
2860 +               printk("EXT4-fs: %s: tagging not permitted on remount.\n",
2861 +                       sb->s_id);
2862 +               err = -EINVAL;
2863 +               goto restore_opts;
2864 +       }
2865 +
2866         sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2867                 (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
2868
2869 diff -urNp -x '*.orig' linux-4.9/fs/fcntl.c linux-4.9/fs/fcntl.c
2870 --- linux-4.9/fs/fcntl.c        2021-02-24 15:47:32.270675151 +0100
2871 +++ linux-4.9/fs/fcntl.c        2021-02-24 15:47:45.067742158 +0100
2872 @@ -22,6 +22,7 @@
2873  #include <linux/pid_namespace.h>
2874  #include <linux/user_namespace.h>
2875  #include <linux/shmem_fs.h>
2876 +#include <linux/vs_limit.h>
2877
2878  #include <asm/poll.h>
2879  #include <asm/siginfo.h>
2880 @@ -390,6 +391,8 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, f
2881
2882         if (!f.file)
2883                 goto out;
2884 +       if (!vx_files_avail(1))
2885 +               goto out;
2886
2887         if (unlikely(f.file->f_mode & FMODE_PATH)) {
2888                 if (!check_fcntl_cmd(cmd))
2889 diff -urNp -x '*.orig' linux-4.9/fs/file.c linux-4.9/fs/file.c
2890 --- linux-4.9/fs/file.c 2021-02-24 15:47:32.270675151 +0100
2891 +++ linux-4.9/fs/file.c 2021-02-24 15:47:45.067742158 +0100
2892 @@ -22,6 +22,7 @@
2893  #include <linux/spinlock.h>
2894  #include <linux/rcupdate.h>
2895  #include <linux/workqueue.h>
2896 +#include <linux/vs_limit.h>
2897
2898  unsigned int sysctl_nr_open __read_mostly = 1024*1024;
2899  unsigned int sysctl_nr_open_min = BITS_PER_LONG;
2900 @@ -357,6 +358,8 @@ struct files_struct *dup_fd(struct files
2901                 struct file *f = *old_fds++;
2902                 if (f) {
2903                         get_file(f);
2904 +                       /* TODO: sum it first for check and performance */
2905 +                       vx_openfd_inc(open_files - i);
2906                 } else {
2907                         /*
2908                          * The fd may be claimed in the fd bitmap but not yet
2909 @@ -406,9 +409,11 @@ static struct fdtable *close_files(struc
2910                                         filp_close(file, files);
2911                                         cond_resched_rcu_qs();
2912                                 }
2913 +                               vx_openfd_dec(i);
2914                         }
2915                         i++;
2916                         set >>= 1;
2917 +                       cond_resched();
2918                 }
2919         }
2920
2921 @@ -540,6 +545,7 @@ repeat:
2922         else
2923                 __clear_close_on_exec(fd, fdt);
2924         error = fd;
2925 +       vx_openfd_inc(fd);
2926  #if 1
2927         /* Sanity check */
2928         if (rcu_access_pointer(fdt->fd[fd]) != NULL) {
2929 @@ -570,6 +576,7 @@ static void __put_unused_fd(struct files
2930         __clear_open_fd(fd, fdt);
2931         if (fd < files->next_fd)
2932                 files->next_fd = fd;
2933 +       vx_openfd_dec(fd);
2934  }
2935
2936  void put_unused_fd(unsigned int fd)
2937 @@ -857,6 +864,8 @@ __releases(&files->file_lock)
2938
2939         if (tofree)
2940                 filp_close(tofree, files);
2941 +       else
2942 +               vx_openfd_inc(fd);      /* fd was unused */
2943
2944         return fd;
2945
2946 diff -urNp -x '*.orig' linux-4.9/fs/file_table.c linux-4.9/fs/file_table.c
2947 --- linux-4.9/fs/file_table.c   2016-12-11 20:17:54.000000000 +0100
2948 +++ linux-4.9/fs/file_table.c   2021-02-24 15:47:45.067742158 +0100
2949 @@ -26,6 +26,8 @@
2950  #include <linux/task_work.h>
2951  #include <linux/ima.h>
2952  #include <linux/swap.h>
2953 +#include <linux/vs_limit.h>
2954 +#include <linux/vs_context.h>
2955
2956  #include <linux/atomic.h>
2957
2958 @@ -137,6 +139,8 @@ struct file *get_empty_filp(void)
2959         mutex_init(&f->f_pos_lock);
2960         eventpoll_init_file(f);
2961         /* f->f_version: 0 */
2962 +       f->f_xid = vx_current_xid();
2963 +       vx_files_inc(f);
2964         return f;
2965
2966  over:
2967 @@ -219,6 +223,8 @@ static void __fput(struct file *file)
2968                 put_write_access(inode);
2969                 __mnt_drop_write(mnt);
2970         }
2971 +       vx_files_dec(file);
2972 +       file->f_xid = 0;
2973         file->f_path.dentry = NULL;
2974         file->f_path.mnt = NULL;
2975         file->f_inode = NULL;
2976 @@ -305,6 +311,8 @@ void put_filp(struct file *file)
2977  {
2978         if (atomic_long_dec_and_test(&file->f_count)) {
2979                 security_file_free(file);
2980 +               vx_files_dec(file);
2981 +               file->f_xid = 0;
2982                 file_free(file);
2983         }
2984  }
2985 diff -urNp -x '*.orig' linux-4.9/fs/fs_struct.c linux-4.9/fs/fs_struct.c
2986 --- linux-4.9/fs/fs_struct.c    2016-12-11 20:17:54.000000000 +0100
2987 +++ linux-4.9/fs/fs_struct.c    2021-02-24 15:47:45.067742158 +0100
2988 @@ -4,6 +4,7 @@
2989  #include <linux/path.h>
2990  #include <linux/slab.h>
2991  #include <linux/fs_struct.h>
2992 +#include <linux/vserver/global.h>
2993  #include "internal.h"
2994
2995  /*
2996 @@ -87,6 +88,7 @@ void free_fs_struct(struct fs_struct *fs
2997  {
2998         path_put(&fs->root);
2999         path_put(&fs->pwd);
3000 +       atomic_dec(&vs_global_fs);
3001         kmem_cache_free(fs_cachep, fs);
3002  }
3003
3004 @@ -124,6 +126,7 @@ struct fs_struct *copy_fs_struct(struct
3005                 fs->pwd = old->pwd;
3006                 path_get(&fs->pwd);
3007                 spin_unlock(&old->lock);
3008 +               atomic_inc(&vs_global_fs);
3009         }
3010         return fs;
3011  }
3012 diff -urNp -x '*.orig' linux-4.9/fs/gfs2/file.c linux-4.9/fs/gfs2/file.c
3013 --- linux-4.9/fs/gfs2/file.c    2021-02-24 15:47:32.277342026 +0100
3014 +++ linux-4.9/fs/gfs2/file.c    2021-02-24 15:47:45.067742158 +0100
3015 @@ -137,6 +137,9 @@ static const u32 fsflags_to_gfs2[32] = {
3016         [12] = GFS2_DIF_EXHASH,
3017         [14] = GFS2_DIF_INHERIT_JDATA,
3018         [17] = GFS2_DIF_TOPDIR,
3019 +       [27] = GFS2_DIF_IXUNLINK,
3020 +       [26] = GFS2_DIF_BARRIER,
3021 +       [29] = GFS2_DIF_COW,
3022  };
3023
3024  static const u32 gfs2_to_fsflags[32] = {
3025 @@ -147,6 +150,9 @@ static const u32 gfs2_to_fsflags[32] = {
3026         [gfs2fl_ExHash] = FS_INDEX_FL,
3027         [gfs2fl_TopLevel] = FS_TOPDIR_FL,
3028         [gfs2fl_InheritJdata] = FS_JOURNAL_DATA_FL,
3029 +       [gfs2fl_IXUnlink] = FS_IXUNLINK_FL,
3030 +       [gfs2fl_Barrier] = FS_BARRIER_FL,
3031 +       [gfs2fl_Cow] = FS_COW_FL,
3032  };
3033
3034  static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
3035 @@ -178,12 +184,17 @@ void gfs2_set_inode_flags(struct inode *
3036  {
3037         struct gfs2_inode *ip = GFS2_I(inode);
3038         unsigned int flags = inode->i_flags;
3039 +       unsigned int vflags = inode->i_vflags;
3040 +
3041 +       flags &= ~(S_IMMUTABLE | S_IXUNLINK |
3042 +               S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC | S_NOSEC);
3043
3044 -       flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_NOSEC);
3045         if ((ip->i_eattr == 0) && !is_sxid(inode->i_mode))
3046                 flags |= S_NOSEC;
3047         if (ip->i_diskflags & GFS2_DIF_IMMUTABLE)
3048                 flags |= S_IMMUTABLE;
3049 +       if (ip->i_diskflags & GFS2_DIF_IXUNLINK)
3050 +               flags |= S_IXUNLINK;
3051         if (ip->i_diskflags & GFS2_DIF_APPENDONLY)
3052                 flags |= S_APPEND;
3053         if (ip->i_diskflags & GFS2_DIF_NOATIME)
3054 @@ -191,6 +202,43 @@ void gfs2_set_inode_flags(struct inode *
3055         if (ip->i_diskflags & GFS2_DIF_SYNC)
3056                 flags |= S_SYNC;
3057         inode->i_flags = flags;
3058 +
3059 +       vflags &= ~(V_BARRIER | V_COW);
3060 +
3061 +       if (ip->i_diskflags & GFS2_DIF_BARRIER)
3062 +               vflags |= V_BARRIER;
3063 +       if (ip->i_diskflags & GFS2_DIF_COW)
3064 +               vflags |= V_COW;
3065 +       inode->i_vflags = vflags;
3066 +}
3067 +
3068 +void gfs2_get_inode_flags(struct inode *inode)
3069 +{
3070 +       struct gfs2_inode *ip = GFS2_I(inode);
3071 +       unsigned int flags = inode->i_flags;
3072 +       unsigned int vflags = inode->i_vflags;
3073 +
3074 +       ip->i_diskflags &= ~(GFS2_DIF_APPENDONLY |
3075 +                       GFS2_DIF_NOATIME | GFS2_DIF_SYNC |
3076 +                       GFS2_DIF_IMMUTABLE | GFS2_DIF_IXUNLINK |
3077 +                       GFS2_DIF_BARRIER | GFS2_DIF_COW);
3078 +
3079 +       if (flags & S_IMMUTABLE)
3080 +               ip->i_diskflags |= GFS2_DIF_IMMUTABLE;
3081 +       if (flags & S_IXUNLINK)
3082 +               ip->i_diskflags |= GFS2_DIF_IXUNLINK;
3083 +
3084 +       if (flags & S_APPEND)
3085 +               ip->i_diskflags |= GFS2_DIF_APPENDONLY;
3086 +       if (flags & S_NOATIME)
3087 +               ip->i_diskflags |= GFS2_DIF_NOATIME;
3088 +       if (flags & S_SYNC)
3089 +               ip->i_diskflags |= GFS2_DIF_SYNC;
3090 +
3091 +       if (vflags & V_BARRIER)
3092 +               ip->i_diskflags |= GFS2_DIF_BARRIER;
3093 +       if (vflags & V_COW)
3094 +               ip->i_diskflags |= GFS2_DIF_COW;
3095  }
3096
3097  /* Flags that can be set by user space */
3098 @@ -306,6 +354,37 @@ static int gfs2_set_flags(struct file *f
3099         return do_gfs2_set_flags(filp, gfsflags, ~(GFS2_DIF_SYSTEM | GFS2_DIF_JDATA));
3100  }
3101
3102 +int gfs2_sync_flags(struct inode *inode, int flags, int vflags)
3103 +{
3104 +       struct gfs2_inode *ip = GFS2_I(inode);
3105 +       struct gfs2_sbd *sdp = GFS2_SB(inode);
3106 +       struct buffer_head *bh;
3107 +       struct gfs2_holder gh;
3108 +       int error;
3109 +
3110 +       error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
3111 +       if (error)
3112 +               return error;
3113 +       error = gfs2_trans_begin(sdp, RES_DINODE, 0);
3114 +       if (error)
3115 +               goto out;
3116 +       error = gfs2_meta_inode_buffer(ip, &bh);
3117 +       if (error)
3118 +               goto out_trans_end;
3119 +       gfs2_trans_add_meta(ip->i_gl, bh);
3120 +       inode->i_flags = flags;
3121 +       inode->i_vflags = vflags;
3122 +       gfs2_get_inode_flags(inode);
3123 +       gfs2_dinode_out(ip, bh->b_data);
3124 +       brelse(bh);
3125 +       gfs2_set_aops(inode);
3126 +out_trans_end:
3127 +       gfs2_trans_end(sdp);
3128 +out:
3129 +       gfs2_glock_dq_uninit(&gh);
3130 +       return error;
3131 +}
3132 +
3133  static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3134  {
3135         switch(cmd) {
3136 diff -urNp -x '*.orig' linux-4.9/fs/gfs2/inode.h linux-4.9/fs/gfs2/inode.h
3137 --- linux-4.9/fs/gfs2/inode.h   2016-12-11 20:17:54.000000000 +0100
3138 +++ linux-4.9/fs/gfs2/inode.h   2021-02-24 15:47:45.067742158 +0100
3139 @@ -117,6 +117,7 @@ extern const struct file_operations gfs2
3140  extern const struct file_operations gfs2_dir_fops_nolock;
3141
3142  extern void gfs2_set_inode_flags(struct inode *inode);
3143 +extern int gfs2_sync_flags(struct inode *inode, int flags, int vflags);
3144
3145  #ifdef CONFIG_GFS2_FS_LOCKING_DLM
3146  extern const struct file_operations gfs2_file_fops;
3147 diff -urNp -x '*.orig' linux-4.9/fs/hostfs/hostfs.h linux-4.9/fs/hostfs/hostfs.h
3148 --- linux-4.9/fs/hostfs/hostfs.h        2016-12-11 20:17:54.000000000 +0100
3149 +++ linux-4.9/fs/hostfs/hostfs.h        2021-02-24 15:47:45.067742158 +0100
3150 @@ -42,6 +42,7 @@ struct hostfs_iattr {
3151         unsigned short  ia_mode;
3152         uid_t           ia_uid;
3153         gid_t           ia_gid;
3154 +       vtag_t          ia_tag;
3155         loff_t          ia_size;
3156         struct timespec ia_atime;
3157         struct timespec ia_mtime;
3158 diff -urNp -x '*.orig' linux-4.9/fs/inode.c linux-4.9/fs/inode.c
3159 --- linux-4.9/fs/inode.c        2021-02-24 15:47:32.280675463 +0100
3160 +++ linux-4.9/fs/inode.c        2021-02-24 15:47:45.067742158 +0100
3161 @@ -18,6 +18,7 @@
3162  #include <linux/buffer_head.h> /* for inode_has_buffers */
3163  #include <linux/ratelimit.h>
3164  #include <linux/list_lru.h>
3165 +#include <linux/vs_tag.h>
3166  #include <trace/events/writeback.h>
3167  #include "internal.h"
3168
3169 @@ -133,6 +134,8 @@ int inode_init_always(struct super_block
3170         struct address_space *const mapping = &inode->i_data;
3171
3172         inode->i_sb = sb;
3173 +
3174 +       /* essential because of inode slab reuse */
3175         inode->i_blkbits = sb->s_blocksize_bits;
3176         inode->i_flags = 0;
3177         atomic64_set(&inode->i_sequence, 0);
3178 @@ -145,6 +148,7 @@ int inode_init_always(struct super_block
3179                 inode->i_opflags |= IOP_XATTR;
3180         i_uid_write(inode, 0);
3181         i_gid_write(inode, 0);
3182 +       i_tag_write(inode, 0);
3183         atomic_set(&inode->i_writecount, 0);
3184         inode->i_size = 0;
3185         inode->i_blocks = 0;
3186 @@ -156,6 +160,7 @@ int inode_init_always(struct super_block
3187         inode->i_link = NULL;
3188         inode->i_dir_seq = 0;
3189         inode->i_rdev = 0;
3190 +       inode->i_mdev = 0;
3191         inode->dirtied_when = 0;
3192
3193  #ifdef CONFIG_CGROUP_WRITEBACK
3194 @@ -480,6 +485,8 @@ void __insert_inode_hash(struct inode *i
3195  }
3196  EXPORT_SYMBOL(__insert_inode_hash);
3197
3198 +EXPORT_SYMBOL_GPL(__iget);
3199 +
3200  /**
3201   *     __remove_inode_hash - remove an inode from the hash
3202   *     @inode: inode to unhash
3203 @@ -1983,9 +1990,11 @@ void init_special_inode(struct inode *in
3204         if (S_ISCHR(mode)) {
3205                 inode->i_fop = &def_chr_fops;
3206                 inode->i_rdev = rdev;
3207 +               inode->i_mdev = rdev;
3208         } else if (S_ISBLK(mode)) {
3209                 inode->i_fop = &def_blk_fops;
3210                 inode->i_rdev = rdev;
3211 +               inode->i_mdev = rdev;
3212         } else if (S_ISFIFO(mode))
3213                 inode->i_fop = &pipefifo_fops;
3214         else if (S_ISSOCK(mode))
3215 @@ -2020,6 +2029,7 @@ void inode_init_owner(struct inode *inod
3216         } else
3217                 inode->i_gid = current_fsgid();
3218         inode->i_mode = mode;
3219 +       i_tag_write(inode, dx_current_fstag(inode->i_sb));
3220  }
3221  EXPORT_SYMBOL(inode_init_owner);
3222
3223 diff -urNp -x '*.orig' linux-4.9/fs/ioctl.c linux-4.9/fs/ioctl.c
3224 --- linux-4.9/fs/ioctl.c        2016-12-11 20:17:54.000000000 +0100
3225 +++ linux-4.9/fs/ioctl.c        2021-02-24 15:47:45.067742158 +0100
3226 @@ -15,6 +15,9 @@
3227  #include <linux/writeback.h>
3228  #include <linux/buffer_head.h>
3229  #include <linux/falloc.h>
3230 +#include <linux/proc_fs.h>
3231 +#include <linux/vserver/inode.h>
3232 +#include <linux/vs_tag.h>
3233  #include "internal.h"
3234
3235  #include <asm/ioctls.h>
3236 diff -urNp -x '*.orig' linux-4.9/fs/jfs/file.c linux-4.9/fs/jfs/file.c
3237 --- linux-4.9/fs/jfs/file.c     2016-12-11 20:17:54.000000000 +0100
3238 +++ linux-4.9/fs/jfs/file.c     2021-02-24 15:47:45.067742158 +0100
3239 @@ -113,7 +113,8 @@ int jfs_setattr(struct dentry *dentry, s
3240                         return rc;
3241         }
3242         if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
3243 -           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
3244 +           (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid)) ||
3245 +           (iattr->ia_valid & ATTR_TAG && !tag_eq(iattr->ia_tag, inode->i_tag))) {
3246                 rc = dquot_transfer(inode, iattr);
3247                 if (rc)
3248                         return rc;
3249 @@ -146,6 +147,7 @@ const struct inode_operations jfs_file_i
3250         .get_acl        = jfs_get_acl,
3251         .set_acl        = jfs_set_acl,
3252  #endif
3253 +       .sync_flags     = jfs_sync_flags,
3254  };
3255
3256  const struct file_operations jfs_file_operations = {
3257 diff -urNp -x '*.orig' linux-4.9/fs/jfs/ioctl.c linux-4.9/fs/jfs/ioctl.c
3258 --- linux-4.9/fs/jfs/ioctl.c    2016-12-11 20:17:54.000000000 +0100
3259 +++ linux-4.9/fs/jfs/ioctl.c    2021-02-24 15:47:45.067742158 +0100
3260 @@ -12,6 +12,7 @@
3261  #include <linux/time.h>
3262  #include <linux/sched.h>
3263  #include <linux/blkdev.h>
3264 +#include <linux/mount.h>
3265  #include <asm/current.h>
3266  #include <asm/uaccess.h>
3267
3268 @@ -56,6 +57,16 @@ static long jfs_map_ext2(unsigned long f
3269  }
3270
3271
3272 +int jfs_sync_flags(struct inode *inode, int flags, int vflags)
3273 +{
3274 +       inode->i_flags = flags;
3275 +       inode->i_vflags = vflags;
3276 +       jfs_get_inode_flags(JFS_IP(inode));
3277 +       inode->i_ctime = CURRENT_TIME_SEC;
3278 +       mark_inode_dirty(inode);
3279 +       return 0;
3280 +}
3281 +
3282  long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3283  {
3284         struct inode *inode = file_inode(filp);
3285 @@ -89,6 +100,11 @@ long jfs_ioctl(struct file *filp, unsign
3286                 if (!S_ISDIR(inode->i_mode))
3287                         flags &= ~JFS_DIRSYNC_FL;
3288
3289 +               if (IS_BARRIER(inode)) {
3290 +                       vxwprintk_task(1, "messing with the barrier.");
3291 +                       return -EACCES;
3292 +               }
3293 +
3294                 /* Is it quota file? Do not allow user to mess with it */
3295                 if (IS_NOQUOTA(inode)) {
3296                         err = -EPERM;
3297 @@ -106,8 +122,8 @@ long jfs_ioctl(struct file *filp, unsign
3298                  * the relevant capability.
3299                  */
3300                 if ((oldflags & JFS_IMMUTABLE_FL) ||
3301 -                       ((flags ^ oldflags) &
3302 -                       (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) {
3303 +                       ((flags ^ oldflags) & (JFS_APPEND_FL |
3304 +                       JFS_IMMUTABLE_FL | JFS_IXUNLINK_FL))) {
3305                         if (!capable(CAP_LINUX_IMMUTABLE)) {
3306                                 inode_unlock(inode);
3307                                 err = -EPERM;
3308 @@ -115,7 +131,7 @@ long jfs_ioctl(struct file *filp, unsign
3309                         }
3310                 }
3311
3312 -               flags = flags & JFS_FL_USER_MODIFIABLE;
3313 +               flags &= JFS_FL_USER_MODIFIABLE;
3314                 flags |= oldflags & ~JFS_FL_USER_MODIFIABLE;
3315                 jfs_inode->mode2 = flags;
3316
3317 diff -urNp -x '*.orig' linux-4.9/fs/jfs/jfs_dinode.h linux-4.9/fs/jfs/jfs_dinode.h
3318 --- linux-4.9/fs/jfs/jfs_dinode.h       2016-12-11 20:17:54.000000000 +0100
3319 +++ linux-4.9/fs/jfs/jfs_dinode.h       2021-02-24 15:47:45.067742158 +0100
3320 @@ -161,9 +161,13 @@ struct dinode {
3321
3322  #define JFS_APPEND_FL          0x01000000 /* writes to file may only append */
3323  #define JFS_IMMUTABLE_FL       0x02000000 /* Immutable file */
3324 +#define JFS_IXUNLINK_FL                0x08000000 /* Immutable invert on unlink */
3325
3326 -#define JFS_FL_USER_VISIBLE    0x03F80000
3327 -#define JFS_FL_USER_MODIFIABLE 0x03F80000
3328 +#define JFS_BARRIER_FL         0x04000000 /* Barrier for chroot() */
3329 +#define JFS_COW_FL             0x20000000 /* Copy on Write marker */
3330 +
3331 +#define JFS_FL_USER_VISIBLE    0x07F80000
3332 +#define JFS_FL_USER_MODIFIABLE 0x07F80000
3333  #define JFS_FL_INHERIT         0x03C80000
3334
3335  /* These are identical to EXT[23]_IOC_GETFLAGS/SETFLAGS */
3336 diff -urNp -x '*.orig' linux-4.9/fs/jfs/jfs_filsys.h linux-4.9/fs/jfs/jfs_filsys.h
3337 --- linux-4.9/fs/jfs/jfs_filsys.h       2016-12-11 20:17:54.000000000 +0100
3338 +++ linux-4.9/fs/jfs/jfs_filsys.h       2021-02-24 15:47:45.067742158 +0100
3339 @@ -266,6 +266,7 @@
3340  #define JFS_NAME_MAX   255
3341  #define JFS_PATH_MAX   BPSIZE
3342
3343 +#define JFS_TAGGED             0x00800000      /* Context Tagging */
3344
3345  /*
3346   *     file system state (superblock state)
3347 diff -urNp -x '*.orig' linux-4.9/fs/jfs/jfs_imap.c linux-4.9/fs/jfs/jfs_imap.c
3348 --- linux-4.9/fs/jfs/jfs_imap.c 2016-12-11 20:17:54.000000000 +0100
3349 +++ linux-4.9/fs/jfs/jfs_imap.c 2021-02-24 15:47:45.071075595 +0100
3350 @@ -46,6 +46,7 @@
3351  #include <linux/pagemap.h>
3352  #include <linux/quotaops.h>
3353  #include <linux/slab.h>
3354 +#include <linux/vs_tag.h>
3355
3356  #include "jfs_incore.h"
3357  #include "jfs_inode.h"
3358 @@ -3046,6 +3047,8 @@ static int copy_from_dinode(struct dinod
3359  {
3360         struct jfs_inode_info *jfs_ip = JFS_IP(ip);
3361         struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
3362 +       kuid_t kuid;
3363 +       kgid_t kgid;
3364
3365         jfs_ip->fileset = le32_to_cpu(dip->di_fileset);
3366         jfs_ip->mode2 = le32_to_cpu(dip->di_mode);
3367 @@ -3066,14 +3069,18 @@ static int copy_from_dinode(struct dinod
3368         }
3369         set_nlink(ip, le32_to_cpu(dip->di_nlink));
3370
3371 -       jfs_ip->saved_uid = make_kuid(&init_user_ns, le32_to_cpu(dip->di_uid));
3372 +       kuid = make_kuid(&init_user_ns, le32_to_cpu(dip->di_uid));
3373 +       kgid = make_kgid(&init_user_ns, le32_to_cpu(dip->di_gid));
3374 +       ip->i_tag = INOTAG_KTAG(DX_TAG(ip), kuid, kgid, GLOBAL_ROOT_TAG);
3375 +
3376 +       jfs_ip->saved_uid = INOTAG_KUID(DX_TAG(ip), kuid, kgid);
3377         if (!uid_valid(sbi->uid))
3378                 ip->i_uid = jfs_ip->saved_uid;
3379         else {
3380                 ip->i_uid = sbi->uid;
3381         }
3382
3383 -       jfs_ip->saved_gid = make_kgid(&init_user_ns, le32_to_cpu(dip->di_gid));
3384 +       jfs_ip->saved_gid = INOTAG_KGID(DX_TAG(ip), kuid, kgid);
3385         if (!gid_valid(sbi->gid))
3386                 ip->i_gid = jfs_ip->saved_gid;
3387         else {
3388 @@ -3138,16 +3145,14 @@ static void copy_to_dinode(struct dinode
3389         dip->di_size = cpu_to_le64(ip->i_size);
3390         dip->di_nblocks = cpu_to_le64(PBLK2LBLK(ip->i_sb, ip->i_blocks));
3391         dip->di_nlink = cpu_to_le32(ip->i_nlink);
3392 -       if (!uid_valid(sbi->uid))
3393 -               dip->di_uid = cpu_to_le32(i_uid_read(ip));
3394 -       else
3395 -               dip->di_uid =cpu_to_le32(from_kuid(&init_user_ns,
3396 -                                                  jfs_ip->saved_uid));
3397 -       if (!gid_valid(sbi->gid))
3398 -               dip->di_gid = cpu_to_le32(i_gid_read(ip));
3399 -       else
3400 -               dip->di_gid = cpu_to_le32(from_kgid(&init_user_ns,
3401 -                                                   jfs_ip->saved_gid));
3402 +       dip->di_uid = cpu_to_le32(from_kuid(&init_user_ns,
3403 +               TAGINO_KUID(DX_TAG(ip),
3404 +               !uid_valid(sbi->uid) ? ip->i_uid : jfs_ip->saved_uid,
3405 +               ip->i_tag)));
3406 +       dip->di_gid = cpu_to_le32(from_kgid(&init_user_ns,
3407 +               TAGINO_KGID(DX_TAG(ip),
3408 +               !gid_valid(sbi->gid) ? ip->i_gid : jfs_ip->saved_gid,
3409 +               ip->i_tag)));
3410         jfs_get_inode_flags(jfs_ip);
3411         /*
3412          * mode2 is only needed for storing the higher order bits.
3413 diff -urNp -x '*.orig' linux-4.9/fs/jfs/jfs_inode.c linux-4.9/fs/jfs/jfs_inode.c
3414 --- linux-4.9/fs/jfs/jfs_inode.c        2016-12-11 20:17:54.000000000 +0100
3415 +++ linux-4.9/fs/jfs/jfs_inode.c        2021-02-24 15:47:45.071075595 +0100
3416 @@ -18,6 +18,7 @@
3417
3418  #include <linux/fs.h>
3419  #include <linux/quotaops.h>
3420 +#include <linux/vs_tag.h>
3421  #include "jfs_incore.h"
3422  #include "jfs_inode.h"
3423  #include "jfs_filsys.h"
3424 @@ -33,6 +34,9 @@ void jfs_set_inode_flags(struct inode *i
3425
3426         if (flags & JFS_IMMUTABLE_FL)
3427                 new_fl |= S_IMMUTABLE;
3428 +       if (flags & JFS_IXUNLINK_FL)
3429 +               new_fl |= S_IXUNLINK;
3430 +
3431         if (flags & JFS_APPEND_FL)
3432                 new_fl |= S_APPEND;
3433         if (flags & JFS_NOATIME_FL)
3434 @@ -41,18 +45,35 @@ void jfs_set_inode_flags(struct inode *i
3435                 new_fl |= S_DIRSYNC;
3436         if (flags & JFS_SYNC_FL)
3437                 new_fl |= S_SYNC;
3438 -       inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME |
3439 -                       S_DIRSYNC | S_SYNC);
3440 +
3441 +       inode_set_flags(inode, new_fl, S_IMMUTABLE | S_IXUNLINK |
3442 +                       S_APPEND | S_NOATIME | S_DIRSYNC | S_SYNC);
3443 +
3444 +       new_fl = 0;
3445 +       if (flags & JFS_BARRIER_FL)
3446 +               new_fl |= V_BARRIER;
3447 +       if (flags & JFS_COW_FL)
3448 +               new_fl |= V_COW;
3449 +
3450 +       set_mask_bits(&inode->i_vflags,
3451 +               V_BARRIER | V_COW, new_fl);
3452  }
3453
3454  void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
3455  {
3456         unsigned int flags = jfs_ip->vfs_inode.i_flags;
3457 +       unsigned int vflags = jfs_ip->vfs_inode.i_vflags;
3458 +
3459 +       jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_IXUNLINK_FL |
3460 +                          JFS_APPEND_FL | JFS_NOATIME_FL |
3461 +                          JFS_DIRSYNC_FL | JFS_SYNC_FL |
3462 +                          JFS_BARRIER_FL | JFS_COW_FL);
3463
3464 -       jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
3465 -                          JFS_DIRSYNC_FL | JFS_SYNC_FL);
3466         if (flags & S_IMMUTABLE)
3467                 jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
3468 +       if (flags & S_IXUNLINK)
3469 +               jfs_ip->mode2 |= JFS_IXUNLINK_FL;
3470 +
3471         if (flags & S_APPEND)
3472                 jfs_ip->mode2 |= JFS_APPEND_FL;
3473         if (flags & S_NOATIME)
3474 @@ -61,6 +82,11 @@ void jfs_get_inode_flags(struct jfs_inod
3475                 jfs_ip->mode2 |= JFS_DIRSYNC_FL;
3476         if (flags & S_SYNC)
3477                 jfs_ip->mode2 |= JFS_SYNC_FL;
3478 +
3479 +       if (vflags & V_BARRIER)
3480 +               jfs_ip->mode2 |= JFS_BARRIER_FL;
3481 +       if (vflags & V_COW)
3482 +               jfs_ip->mode2 |= JFS_COW_FL;
3483  }
3484
3485  /*
3486 diff -urNp -x '*.orig' linux-4.9/fs/jfs/jfs_inode.h linux-4.9/fs/jfs/jfs_inode.h
3487 --- linux-4.9/fs/jfs/jfs_inode.h        2016-12-11 20:17:54.000000000 +0100
3488 +++ linux-4.9/fs/jfs/jfs_inode.h        2021-02-24 15:47:45.071075595 +0100
3489 @@ -39,6 +39,7 @@ extern struct dentry *jfs_fh_to_dentry(s
3490  extern struct dentry *jfs_fh_to_parent(struct super_block *sb, struct fid *fid,
3491         int fh_len, int fh_type);
3492  extern void jfs_set_inode_flags(struct inode *);
3493 +extern int jfs_sync_flags(struct inode *, int, int);
3494  extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
3495  extern int jfs_setattr(struct dentry *, struct iattr *);
3496
3497 diff -urNp -x '*.orig' linux-4.9/fs/jfs/namei.c linux-4.9/fs/jfs/namei.c
3498 --- linux-4.9/fs/jfs/namei.c    2021-02-24 15:47:32.287342339 +0100
3499 +++ linux-4.9/fs/jfs/namei.c    2021-02-24 15:47:45.071075595 +0100
3500 @@ -22,6 +22,7 @@
3501  #include <linux/ctype.h>
3502  #include <linux/quotaops.h>
3503  #include <linux/exportfs.h>
3504 +#include <linux/vs_tag.h>
3505  #include "jfs_incore.h"
3506  #include "jfs_superblock.h"
3507  #include "jfs_inode.h"
3508 @@ -1480,6 +1481,7 @@ static struct dentry *jfs_lookup(struct
3509                         jfs_err("jfs_lookup: iget failed on inum %d", (uint)inum);
3510         }
3511
3512 +       dx_propagate_tag(nd, ip);
3513         return d_splice_alias(ip, dentry);
3514  }
3515
3516 @@ -1542,6 +1544,7 @@ const struct inode_operations jfs_dir_in
3517         .get_acl        = jfs_get_acl,
3518         .set_acl        = jfs_set_acl,
3519  #endif
3520 +       .sync_flags     = jfs_sync_flags,
3521  };
3522
3523  const struct file_operations jfs_dir_operations = {
3524 diff -urNp -x '*.orig' linux-4.9/fs/jfs/super.c linux-4.9/fs/jfs/super.c
3525 --- linux-4.9/fs/jfs/super.c    2021-02-24 15:47:32.287342339 +0100
3526 +++ linux-4.9/fs/jfs/super.c    2021-02-24 15:47:45.071075595 +0100
3527 @@ -206,7 +206,8 @@ enum {
3528         Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
3529         Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota,
3530         Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask,
3531 -       Opt_discard, Opt_nodiscard, Opt_discard_minblk
3532 +       Opt_discard, Opt_nodiscard, Opt_discard_minblk,
3533 +       Opt_tag, Opt_notag, Opt_tagid
3534  };
3535
3536  static const match_table_t tokens = {
3537 @@ -216,6 +217,10 @@ static const match_table_t tokens = {
3538         {Opt_resize, "resize=%u"},
3539         {Opt_resize_nosize, "resize"},
3540         {Opt_errors, "errors=%s"},
3541 +       {Opt_tag, "tag"},
3542 +       {Opt_notag, "notag"},
3543 +       {Opt_tagid, "tagid=%u"},
3544 +       {Opt_tag, "tagxid"},
3545         {Opt_ignore, "noquota"},
3546         {Opt_ignore, "quota"},
3547         {Opt_usrquota, "usrquota"},
3548 @@ -405,7 +410,20 @@ static int parse_options(char *options,
3549                                 pr_err("JFS: discard option not supported on device\n");
3550                         break;
3551                 }
3552 -
3553 +#ifndef CONFIG_TAGGING_NONE
3554 +               case Opt_tag:
3555 +                       *flag |= JFS_TAGGED;
3556 +                       break;
3557 +               case Opt_notag:
3558 +                       *flag &= JFS_TAGGED;
3559 +                       break;
3560 +#endif
3561 +#ifdef CONFIG_PROPAGATE
3562 +               case Opt_tagid:
3563 +                       /* use args[0] */
3564 +                       *flag |= JFS_TAGGED;
3565 +                       break;
3566 +#endif
3567                 default:
3568                         printk("jfs: Unrecognized mount option \"%s\" or missing value\n",
3569                                p);
3570 @@ -437,6 +455,12 @@ static int jfs_remount(struct super_bloc
3571         if (!parse_options(data, sb, &newLVSize, &flag))
3572                 return -EINVAL;
3573
3574 +       if ((flag & JFS_TAGGED) && !(sb->s_flags & MS_TAGGED)) {
3575 +               printk(KERN_ERR "JFS: %s: tagging not permitted on remount.\n",
3576 +                       sb->s_id);
3577 +               return -EINVAL;
3578 +       }
3579 +
3580         if (newLVSize) {
3581                 if (sb->s_flags & MS_RDONLY) {
3582                         pr_err("JFS: resize requires volume to be mounted read-write\n");
3583 @@ -517,6 +541,9 @@ static int jfs_fill_super(struct super_b
3584  #ifdef CONFIG_JFS_POSIX_ACL
3585         sb->s_flags |= MS_POSIXACL;
3586  #endif
3587 +       /* map mount option tagxid */
3588 +       if (sbi->flag & JFS_TAGGED)
3589 +               sb->s_flags |= MS_TAGGED;
3590
3591         if (newLVSize) {
3592                 pr_err("resize option for remount only\n");
3593 diff -urNp -x '*.orig' linux-4.9/fs/libfs.c linux-4.9/fs/libfs.c
3594 --- linux-4.9/fs/libfs.c        2021-02-24 15:47:32.287342339 +0100
3595 +++ linux-4.9/fs/libfs.c        2021-02-24 15:47:45.071075595 +0100
3596 @@ -180,7 +180,8 @@ static inline unsigned char dt_type(stru
3597   * both impossible due to the lock on directory.
3598   */
3599
3600 -int dcache_readdir(struct file *file, struct dir_context *ctx)
3601 +static inline int do_dcache_readdir_filter(struct file *file,
3602 +       struct dir_context *ctx, int (*filter)(struct dentry *dentry))
3603  {
3604         struct dentry *dentry = file->f_path.dentry;
3605         struct dentry *cursor = file->private_data;
3606 @@ -197,9 +198,10 @@ int dcache_readdir(struct file *file, st
3607                 p = &cursor->d_child;
3608
3609         while ((p = scan_positives(cursor, p, 1, &next)) != anchor) {
3610 -               if (!dir_emit(ctx, next->d_name.name, next->d_name.len,
3611 +               if (!filter || filter(next))
3612 +                       if (!dir_emit(ctx, next->d_name.name, next->d_name.len,
3613                               d_inode(next)->i_ino, dt_type(d_inode(next))))
3614 -                       break;
3615 +                               break;
3616                 ctx->pos++;
3617         }
3618         spin_lock(&dentry->d_lock);
3619 @@ -209,8 +211,22 @@ int dcache_readdir(struct file *file, st
3620
3621         return 0;
3622  }
3623 +
3624  EXPORT_SYMBOL(dcache_readdir);
3625
3626 +int dcache_readdir(struct file *filp, struct dir_context *ctx)
3627 +{
3628 +       return do_dcache_readdir_filter(filp, ctx, NULL);
3629 +}
3630 +
3631 +EXPORT_SYMBOL(dcache_readdir_filter);
3632 +
3633 +int dcache_readdir_filter(struct file *filp, struct dir_context *ctx,
3634 +       int (*filter)(struct dentry *))
3635 +{
3636 +       return do_dcache_readdir_filter(filp, ctx, filter);
3637 +}
3638 +
3639  ssize_t generic_read_dir(struct file *filp, char __user *buf, size_t siz, loff_t *ppos)
3640  {
3641         return -EISDIR;
3642 diff -urNp -x '*.orig' linux-4.9/fs/locks.c linux-4.9/fs/locks.c
3643 --- linux-4.9/fs/locks.c        2021-02-24 15:47:32.287342339 +0100
3644 +++ linux-4.9/fs/locks.c        2021-02-24 15:47:45.071075595 +0100
3645 @@ -127,6 +127,8 @@
3646  #include <linux/pid_namespace.h>
3647  #include <linux/hashtable.h>
3648  #include <linux/percpu.h>
3649 +#include <linux/vs_base.h>
3650 +#include <linux/vs_limit.h>
3651
3652  #define CREATE_TRACE_POINTS
3653  #include <trace/events/filelock.h>
3654 @@ -292,11 +294,15 @@ static void locks_init_lock_heads(struct
3655  /* Allocate an empty lock structure. */
3656  struct file_lock *locks_alloc_lock(void)
3657  {
3658 -       struct file_lock *fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
3659 +       struct file_lock *fl;
3660
3661 -       if (fl)
3662 -               locks_init_lock_heads(fl);
3663 +       fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
3664
3665 +       if (fl) {
3666 +               locks_init_lock_heads(fl);
3667 +               vx_locks_inc(fl);
3668 +               fl->fl_xid = -1;
3669 +       }
3670         return fl;
3671  }
3672  EXPORT_SYMBOL_GPL(locks_alloc_lock);
3673 @@ -348,6 +354,7 @@ void locks_init_lock(struct file_lock *f
3674  {
3675         memset(fl, 0, sizeof(struct file_lock));
3676         locks_init_lock_heads(fl);
3677 +       fl->fl_xid = -1;
3678  }
3679
3680  EXPORT_SYMBOL(locks_init_lock);
3681 @@ -365,6 +372,7 @@ void locks_copy_conflock(struct file_loc
3682         new->fl_start = fl->fl_start;
3683         new->fl_end = fl->fl_end;
3684         new->fl_lmops = fl->fl_lmops;
3685 +       new->fl_xid = fl->fl_xid;
3686         new->fl_ops = NULL;
3687
3688         if (fl->fl_lmops) {
3689 @@ -426,7 +434,10 @@ flock_make_lock(struct file *filp, unsig
3690         fl->fl_flags = FL_FLOCK;
3691         fl->fl_type = type;
3692         fl->fl_end = OFFSET_MAX;
3693 -
3694 +
3695 +       vxd_assert(filp->f_xid == vx_current_xid(),
3696 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3697 +       fl->fl_xid = filp->f_xid;
3698         return fl;
3699  }
3700
3701 @@ -548,6 +559,7 @@ static int lease_init(struct file *filp,
3702
3703         fl->fl_owner = filp;
3704         fl->fl_pid = current->tgid;
3705 +       fl->fl_xid = vx_current_xid();
3706
3707         fl->fl_file = filp;
3708         fl->fl_flags = FL_LEASE;
3709 @@ -567,6 +579,10 @@ static struct file_lock *lease_alloc(str
3710         if (fl == NULL)
3711                 return ERR_PTR(error);
3712
3713 +       fl->fl_xid = vx_current_xid();
3714 +       if (filp)
3715 +               vxd_assert(filp->f_xid == fl->fl_xid,
3716 +                       "f_xid(%d) == fl_xid(%d)", filp->f_xid, fl->fl_xid);
3717         error = lease_init(filp, type, fl);
3718         if (error) {
3719                 locks_free_lock(fl);
3720 @@ -956,6 +972,7 @@ static int flock_lock_inode(struct inode
3721                 goto out;
3722         }
3723
3724 +       new_fl->fl_xid = -1;
3725  find_conflict:
3726         list_for_each_entry(fl, &ctx->flc_flock, fl_list) {
3727                 if (!flock_locks_conflict(request, fl))
3728 @@ -984,7 +1001,7 @@ out:
3729  }
3730
3731  static int posix_lock_inode(struct inode *inode, struct file_lock *request,
3732 -                           struct file_lock *conflock)
3733 +                           struct file_lock *conflock, vxid_t xid)
3734  {
3735         struct file_lock *fl, *tmp;
3736         struct file_lock *new_fl = NULL;
3737 @@ -1000,6 +1017,9 @@ static int posix_lock_inode(struct inode
3738         if (!ctx)
3739                 return (request->fl_type == F_UNLCK) ? 0 : -ENOMEM;
3740
3741 +       if (xid)
3742 +               vxd_assert(xid == vx_current_xid(),
3743 +                       "xid(%d) == current(%d)", xid, vx_current_xid());
3744         /*
3745          * We may need two file_lock structures for this operation,
3746          * so we get them in advance to avoid races.
3747 @@ -1010,7 +1030,11 @@ static int posix_lock_inode(struct inode
3748             (request->fl_type != F_UNLCK ||
3749              request->fl_start != 0 || request->fl_end != OFFSET_MAX)) {
3750                 new_fl = locks_alloc_lock();
3751 +               new_fl->fl_xid = xid;
3752 +               // vx_locks_inc(new_fl);
3753                 new_fl2 = locks_alloc_lock();
3754 +               new_fl2->fl_xid = xid;
3755 +               // vx_locks_inc(new_fl2);
3756         }
3757
3758         percpu_down_read_preempt_disable(&file_rwsem);
3759 @@ -1216,7 +1240,7 @@ static int posix_lock_inode(struct inode
3760  int posix_lock_file(struct file *filp, struct file_lock *fl,
3761                         struct file_lock *conflock)
3762  {
3763 -       return posix_lock_inode(locks_inode(filp), fl, conflock);
3764 +       return posix_lock_inode(locks_inode(filp), fl, conflock, filp->f_xid);
3765  }
3766  EXPORT_SYMBOL(posix_lock_file);
3767
3768 @@ -1232,7 +1256,7 @@ static int posix_lock_inode_wait(struct
3769         int error;
3770         might_sleep ();
3771         for (;;) {
3772 -               error = posix_lock_inode(inode, fl, NULL);
3773 +               error = posix_lock_inode(inode, fl, NULL, 0);
3774                 if (error != FILE_LOCK_DEFERRED)
3775                         break;
3776                 error = wait_event_interruptible(fl->fl_wait, !fl->fl_next);
3777 @@ -1308,10 +1332,13 @@ int locks_mandatory_area(struct inode *i
3778         fl.fl_end = end;
3779
3780         for (;;) {
3781 +               vxid_t f_xid = 0;
3782 +
3783                 if (filp) {
3784                         fl.fl_owner = filp;
3785                         fl.fl_flags &= ~FL_SLEEP;
3786 -                       error = posix_lock_inode(inode, &fl, NULL);
3787 +                       f_xid = filp->f_xid;
3788 +                       error = posix_lock_inode(inode, &fl, NULL, f_xid);
3789                         if (!error)
3790                                 break;
3791                 }
3792 @@ -1319,7 +1346,7 @@ int locks_mandatory_area(struct inode *i
3793                 if (sleep)
3794                         fl.fl_flags |= FL_SLEEP;
3795                 fl.fl_owner = current->files;
3796 -               error = posix_lock_inode(inode, &fl, NULL);
3797 +               error = posix_lock_inode(inode, &fl, NULL, f_xid);
3798                 if (error != FILE_LOCK_DEFERRED)
3799                         break;
3800                 error = wait_event_interruptible(fl.fl_wait, !fl.fl_next);
3801 @@ -2374,6 +2401,16 @@ int fcntl_setlk64(unsigned int fd, struc
3802         if (file_lock == NULL)
3803                 return -ENOLCK;
3804
3805 +       vxd_assert(filp->f_xid == vx_current_xid(),
3806 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3807 +       file_lock->fl_xid = filp->f_xid;
3808 +       // vx_locks_inc(file_lock);
3809 +
3810 +       vxd_assert(filp->f_xid == vx_current_xid(),
3811 +               "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
3812 +       file_lock->fl_xid = filp->f_xid;
3813 +       // vx_locks_inc(file_lock);
3814 +
3815         /*
3816          * This might block, so we do it before checking the inode.
3817          */
3818 @@ -2710,8 +2747,11 @@ static int locks_show(struct seq_file *f
3819
3820         lock_get_status(f, fl, iter->li_pos, "");
3821
3822 -       list_for_each_entry(bfl, &fl->fl_block, fl_block)
3823 +       list_for_each_entry(bfl, &fl->fl_block, fl_block) {
3824 +               if (!vx_check(fl->fl_xid, VS_WATCH_P | VS_IDENT))
3825 +                       continue;
3826                 lock_get_status(f, bfl, iter->li_pos, " ->");
3827 +       }
3828
3829         return 0;
3830  }
3831 diff -urNp -x '*.orig' linux-4.9/fs/mount.h linux-4.9/fs/mount.h
3832 --- linux-4.9/fs/mount.h        2021-02-24 15:47:32.287342339 +0100
3833 +++ linux-4.9/fs/mount.h        2021-02-24 15:47:45.071075595 +0100
3834 @@ -69,6 +69,7 @@ struct mount {
3835         struct hlist_head mnt_pins;
3836         struct fs_pin mnt_umount;
3837         struct dentry *mnt_ex_mountpoint;
3838 +       vtag_t mnt_tag;                 /* tagging used for vfsmount */
3839  };
3840
3841  #define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */
3842 diff -urNp -x '*.orig' linux-4.9/fs/namei.c linux-4.9/fs/namei.c
3843 --- linux-4.9/fs/namei.c        2021-02-24 15:47:32.290675776 +0100
3844 +++ linux-4.9/fs/namei.c        2021-02-24 15:47:45.071075595 +0100
3845 @@ -37,9 +37,19 @@
3846  #include <linux/hash.h>
3847  #include <linux/bitops.h>
3848  #include <linux/init_task.h>
3849 +#include <linux/proc_fs.h>
3850 +#include <linux/magic.h>
3851 +#include <linux/vserver/inode.h>
3852 +#include <linux/vs_base.h>
3853 +#include <linux/vs_tag.h>
3854 +#include <linux/vs_cowbl.h>
3855 +#include <linux/vs_device.h>
3856 +#include <linux/vs_context.h>
3857 +#include <linux/pid_namespace.h>
3858  #include <asm/uaccess.h>
3859
3860  #include "internal.h"
3861 +#include "proc/internal.h"
3862  #include "mount.h"
3863
3864  /* [Feb-1997 T. Schoebel-Theuer]
3865 @@ -286,6 +296,93 @@ static int check_acl(struct inode *inode
3866         return -EAGAIN;
3867  }
3868
3869 +static inline int dx_barrier(const struct inode *inode)
3870 +{
3871 +       if (IS_BARRIER(inode) && !vx_check(0, VS_ADMIN | VS_WATCH)) {
3872 +               vxwprintk_task(1, "did hit the barrier.");
3873 +               return 1;
3874 +       }
3875 +       return 0;
3876 +}
3877 +
3878 +static int __dx_permission(const struct inode *inode, int mask)
3879 +{
3880 +       if (dx_barrier(inode))
3881 +               return -EACCES;
3882 +
3883 +       if (inode->i_sb->s_magic == DEVPTS_SUPER_MAGIC) {
3884 +               /* devpts is xid tagged */
3885 +               if (S_ISDIR(inode->i_mode) ||
3886 +                   vx_check((vxid_t)i_tag_read(inode), VS_IDENT | VS_WATCH_P))
3887 +                       return 0;
3888 +
3889 +               /* just pretend we didn't find anything */
3890 +               return -ENOENT;
3891 +       }
3892 +       else if (inode->i_sb->s_magic == PROC_SUPER_MAGIC) {
3893 +               struct proc_dir_entry *de = PDE(inode);
3894 +
3895 +               if (de && !vx_hide_check(0, de->vx_flags)) {
3896 +                       vxdprintk(VXD_CBIT(misc, 9),
3897 +                               VS_Q("%*s") " hidden by _dx_permission",
3898 +                               de->namelen, de->name);
3899 +                       goto out;
3900 +               }
3901 +
3902 +               if ((mask & (MAY_WRITE | MAY_APPEND))) {
3903 +                       struct pid *pid;
3904 +                       struct task_struct *tsk;
3905 +
3906 +                       if (vx_check(0, VS_ADMIN | VS_WATCH_P) ||
3907 +                           vx_flags(VXF_STATE_SETUP, 0))
3908 +                               return 0;
3909 +
3910 +                       pid = PROC_I(inode)->pid;
3911 +                       if (!pid)
3912 +                               goto out;
3913 +
3914 +                       rcu_read_lock();
3915 +                       tsk = pid_task(pid, PIDTYPE_PID);
3916 +                       vxdprintk(VXD_CBIT(tag, 0), "accessing %p[#%u]",
3917 +                                 tsk, (tsk ? vx_task_xid(tsk) : 0));
3918 +                       if (tsk &&
3919 +                               vx_check(vx_task_xid(tsk), VS_IDENT | VS_WATCH_P)) {
3920 +                               rcu_read_unlock();
3921 +                               return 0;
3922 +                       }
3923 +                       rcu_read_unlock();
3924 +               }
3925 +               else {
3926 +                       /* FIXME: Should we block some entries here? */
3927 +                       return 0;
3928 +               }
3929 +       }
3930 +       else {
3931 +               if (dx_notagcheck(inode->i_sb) ||
3932 +                   dx_check((vxid_t)i_tag_read(inode),
3933 +                       DX_HOSTID | DX_ADMIN | DX_WATCH | DX_IDENT))
3934 +                       return 0;
3935 +       }
3936 +
3937 +out:
3938 +       return -EACCES;
3939 +}
3940 +
3941 +int dx_permission(const struct inode *inode, int mask)
3942 +{
3943 +       int ret = __dx_permission(inode, mask);
3944 +       if (unlikely(ret)) {
3945 +#ifndef        CONFIG_VSERVER_WARN_DEVPTS
3946 +               if (inode->i_sb->s_magic != DEVPTS_SUPER_MAGIC)
3947 +#endif
3948 +                   vxwprintk_task(1,
3949 +                       "denied [0x%x] access to inode %s:%p[#%d,%lu]",
3950 +                       mask, inode->i_sb->s_id, inode,
3951 +                       i_tag_read(inode), inode->i_ino);
3952 +       }
3953 +       return ret;
3954 +}
3955 +
3956  /*
3957   * This does the basic permission checking
3958   */
3959 @@ -410,7 +507,7 @@ int __inode_permission(struct inode *ino
3960                 /*
3961                  * Nobody gets write access to an immutable file.
3962                  */
3963 -               if (IS_IMMUTABLE(inode))
3964 +               if (IS_IMMUTABLE(inode) && !IS_COW(inode))
3965                         return -EPERM;
3966
3967                 /*
3968 @@ -422,6 +519,10 @@ int __inode_permission(struct inode *ino
3969                         return -EACCES;
3970         }
3971
3972 +       retval = dx_permission(inode, mask);
3973 +       if (retval)
3974 +               return retval;
3975 +
3976         retval = do_inode_permission(inode, mask);
3977         if (retval)
3978                 return retval;
3979 @@ -2825,7 +2926,7 @@ static int may_delete(struct inode *dir,
3980                 return -EPERM;
3981
3982         if (check_sticky(dir, inode) || IS_APPEND(inode) ||
3983 -           IS_IMMUTABLE(inode) || IS_SWAPFILE(inode) || HAS_UNMAPPED_ID(inode))
3984 +           IS_IXORUNLINK(inode) || IS_SWAPFILE(inode) || HAS_UNMAPPED_ID(inode))
3985                 return -EPERM;
3986         if (isdir) {
3987                 if (!d_is_dir(victim))
3988 @@ -2913,19 +3014,25 @@ int vfs_create(struct inode *dir, struct
3989                 bool want_excl)
3990  {
3991         int error = may_create(dir, dentry);
3992 -       if (error)
3993 +       if (error) {
3994 +               vxdprintk(VXD_CBIT(misc, 3), "may_create failed with %d", error);
3995                 return error;
3996 +       }
3997
3998         if (!dir->i_op->create)
3999                 return -EACCES; /* shouldn't it be ENOSYS? */
4000         mode &= S_IALLUGO;
4001         mode |= S_IFREG;
4002         error = security_inode_create(dir, dentry, mode);
4003 -       if (error)
4004 +       if (error) {
4005 +               vxdprintk(VXD_CBIT(misc, 3), "security_inode_create failed with %d", error);
4006                 return error;
4007 +       }
4008         error = dir->i_op->create(dir, dentry, mode, want_excl);
4009         if (!error)
4010                 fsnotify_create(dir, dentry);
4011 +       else
4012 +               vxdprintk(VXD_CBIT(misc, 3), "i_op->create failed with %d", error);
4013         return error;
4014  }
4015  EXPORT_SYMBOL(vfs_create);
4016 @@ -2963,6 +3070,15 @@ static int may_open(struct path *path, i
4017                 break;
4018         }
4019
4020 +#ifdef CONFIG_VSERVER_COWBL
4021 +       if (IS_COW(inode) &&
4022 +               ((flag & O_ACCMODE) != O_RDONLY)) {
4023 +               if (IS_COW_LINK(inode))
4024 +                       return -EMLINK;
4025 +               inode->i_flags &= ~(S_IXUNLINK|S_IMMUTABLE);
4026 +               mark_inode_dirty(inode);
4027 +       }
4028 +#endif
4029         error = inode_permission(inode, MAY_OPEN | acc_mode);
4030         if (error)
4031                 return error;
4032 @@ -3423,6 +3539,16 @@ finish_open:
4033         }
4034  finish_open_created:
4035         error = may_open(&nd->path, acc_mode, open_flag);
4036 +#ifdef CONFIG_VSERVER_COWBL
4037 +       if (error == -EMLINK) {
4038 +               struct dentry *dentry;
4039 +               dentry = cow_break_link(nd->name->name);
4040 +               if (IS_ERR(dentry))
4041 +                       error = PTR_ERR(dentry);
4042 +               else
4043 +                       dput(dentry);
4044 +       }
4045 +#endif
4046         if (error)
4047                 goto out;
4048         BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
4049 @@ -3526,6 +3652,9 @@ static struct file *path_openat(struct n
4050         int opened = 0;
4051         int error;
4052
4053 +#ifdef CONFIG_VSERVER_COWBL
4054 +restart:
4055 +#endif
4056         file = get_empty_filp();
4057         if (IS_ERR(file))
4058                 return file;
4059 @@ -3559,6 +3688,12 @@ static struct file *path_openat(struct n
4060                 }
4061         }
4062         terminate_walk(nd);
4063 +#ifdef CONFIG_VSERVER_COWBL
4064 +       if (error == -EMLINK) {
4065 +               // path_cleanup(nd);
4066 +               goto restart;
4067 +       }
4068 +#endif
4069  out2:
4070         if (!(opened & FILE_OPENED)) {
4071                 BUG_ON(!error);
4072 @@ -3679,6 +3814,11 @@ static struct dentry *filename_create(in
4073                 goto fail;
4074         }
4075         putname(name);
4076 +       vxdprintk(VXD_CBIT(misc, 3), "filename_create path.dentry = %p (%.*s), dentry = %p (%.*s), d_inode = %p",
4077 +               path->dentry, path->dentry->d_name.len,
4078 +               path->dentry->d_name.name, dentry,
4079 +               dentry->d_name.len, dentry->d_name.name,
4080 +               path->dentry->d_inode);
4081         return dentry;
4082  fail:
4083         dput(dentry);
4084 @@ -3797,6 +3937,7 @@ retry:
4085                         error = vfs_mknod(path.dentry->d_inode,dentry,mode,0);
4086                         break;
4087         }
4088 +
4089  out:
4090         done_path_create(&path, dentry);
4091         if (retry_estale(error, lookup_flags)) {
4092 @@ -4218,7 +4359,7 @@ int vfs_link(struct dentry *old_dentry,
4093         /*
4094          * A link to an append-only or immutable file cannot be created.
4095          */
4096 -       if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
4097 +       if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
4098                 return -EPERM;
4099         /*
4100          * Updating the link count will likely cause i_uid and i_gid to
4101 @@ -4748,6 +4889,326 @@ const char *vfs_get_link(struct dentry *
4102  }
4103  EXPORT_SYMBOL(vfs_get_link);
4104
4105 +
4106 +#ifdef CONFIG_VSERVER_COWBL
4107 +
4108 +static inline
4109 +void dump_path(const char *name, struct path *path)
4110 +{
4111 +       vxdprintk(VXD_CBIT(misc, 3),
4112 +               "%s: path=%p mnt=%p dentry=%p", name, path,
4113 +               path ? path->mnt : NULL,
4114 +               path ? path->dentry : NULL);
4115 +
4116 +       if (path && path->mnt)
4117 +               vxdprintk(VXD_CBIT(misc, 3),
4118 +               "%s: path mnt_sb=%p[#%d,#%d] mnt_root=%p[#%d]", name,
4119 +               path->mnt->mnt_sb,
4120 +               path->mnt->mnt_sb ? path->mnt->mnt_sb->s_count : -1,
4121 +               path->mnt->mnt_sb ? atomic_read(&path->mnt->mnt_sb->s_active) : -1,
4122 +               path->mnt->mnt_root,
4123 +               path->mnt->mnt_root ? path->mnt->mnt_root->d_lockref.count : -1);
4124 +
4125 +       if (path && path->dentry)
4126 +               vxdprintk(VXD_CBIT(misc, 3),
4127 +               "%s: path dentry=%p[#%d]", name,
4128 +               path->dentry,
4129 +               path->dentry ? path->dentry->d_lockref.count : -1);
4130 +}
4131 +
4132 +static inline
4133 +long do_cow_splice(struct file *in, struct file *out, size_t len)
4134 +{
4135 +       loff_t ppos = 0;
4136 +       loff_t opos = 0;
4137 +
4138 +       return do_splice_direct(in, &ppos, out, &opos, len, 0);
4139 +}
4140 +
4141 +struct dentry *cow_break_link(const char *pathname)
4142 +{
4143 +       int ret, mode, pathlen, redo = 0, drop = 1;
4144 +       struct path old_path = {}, par_path = {}, dir_path = {}, *new_path = NULL;
4145 +       struct dentry *dir, *old_dentry, *new_dentry = NULL;
4146 +       struct file *old_file;
4147 +       struct file *new_file;
4148 +       struct qstr new_qstr;
4149 +       int new_type;
4150 +       char *to, *path, pad='\251';
4151 +       loff_t size;
4152 +       struct filename *filename = getname_kernel(pathname);
4153 +       struct filename *to_filename;
4154 +
4155 +       vxdprintk(VXD_CBIT(misc, 1),
4156 +               "cow_break_link(" VS_Q("%s") ")", pathname);
4157 +
4158 +       path = kmalloc(PATH_MAX, GFP_KERNEL);
4159 +       ret = -ENOMEM;
4160 +       if (!path || IS_ERR(filename))
4161 +               goto out;
4162 +
4163 +       /* old_path will have refs to dentry and mnt */
4164 +       ret = filename_lookup(AT_FDCWD, filename, LOOKUP_FOLLOW, &old_path, NULL);
4165 +       vxdprintk(VXD_CBIT(misc, 2),
4166 +               "do_path_lookup(old): %d", ret);
4167 +       if (ret < 0)
4168 +               goto out_free_path;
4169 +
4170 +       dump_path("cow (old)", &old_path);
4171 +
4172 +       /* no explicit reference for old_dentry here */
4173 +       old_dentry = old_path.dentry;
4174 +
4175 +       mode = old_dentry->d_inode->i_mode;
4176 +       to = d_path(&old_path, path, PATH_MAX-2);
4177 +       pathlen = strlen(to);
4178 +       vxdprintk(VXD_CBIT(misc, 2),
4179 +               "old path " VS_Q("%s") " [%p:" VS_Q("%.*s") ":%d]", to,
4180 +               old_dentry,
4181 +               old_dentry->d_name.len, old_dentry->d_name.name,
4182 +               old_dentry->d_name.len);
4183 +
4184 +       to[pathlen + 1] = 0;
4185 +retry:
4186 +       new_dentry = NULL;
4187 +       to[pathlen] = pad--;
4188 +       ret = -ELOOP;
4189 +       if (pad <= '\240')
4190 +               goto out_rel_old;
4191 +
4192 +       vxdprintk(VXD_CBIT(misc, 1), "temp copy " VS_Q("%s"), to);
4193 +
4194 +       /* dir_path will have refs to dentry and mnt */
4195 +       to_filename = getname_kernel(to);
4196 +       to_filename = filename_parentat(AT_FDCWD, to_filename,
4197 +               LOOKUP_PARENT | LOOKUP_OPEN | LOOKUP_CREATE, &par_path, &new_qstr, &new_type);
4198 +       vxdprintk(VXD_CBIT(misc, 2), "filename_parentat(new): %p", to_filename);
4199 +       dump_path("cow (par)", &par_path);
4200 +       if (IS_ERR(to_filename))
4201 +               goto retry;
4202 +
4203 +       vxdprintk(VXD_CBIT(misc, 2), "to_filename refcnt=%d", to_filename->refcnt);
4204 +
4205 +       /* this puppy downs the dir inode mutex if successful.
4206 +          dir_path will hold refs to dentry and mnt and
4207 +          we'll have write access to the mnt */
4208 +       new_dentry = filename_create(AT_FDCWD, to_filename, &dir_path, 0);
4209 +       if (!new_dentry || IS_ERR(new_dentry)) {
4210 +               path_put(&par_path);
4211 +               vxdprintk(VXD_CBIT(misc, 2),
4212 +                       "filename_create(new) failed with %ld",
4213 +                       PTR_ERR(new_dentry));
4214 +               goto retry;
4215 +       }
4216 +       vxdprintk(VXD_CBIT(misc, 2),
4217 +               "filename_create(new): %p [" VS_Q("%.*s") ":%d]",
4218 +               new_dentry,
4219 +               new_dentry->d_name.len, new_dentry->d_name.name,
4220 +               new_dentry->d_name.len);
4221 +
4222 +       dump_path("cow (dir)", &dir_path);
4223 +
4224 +       /* take a reference on new_dentry */
4225 +       dget(new_dentry);
4226 +
4227 +       /* dentry/mnt refs handed over to new_path */
4228 +       new_path = &dir_path;
4229 +
4230 +       /* dentry for old/new dir */
4231 +       dir = par_path.dentry;
4232 +
4233 +       /* give up reference on dir */
4234 +       dput(new_path->dentry);
4235 +
4236 +       /* new_dentry already has a reference */
4237 +       new_path->dentry = new_dentry;
4238 +
4239 +       ret = vfs_create(dir->d_inode, new_dentry, mode, 1);
4240 +       vxdprintk(VXD_CBIT(misc, 2),
4241 +               "vfs_create(new): %d", ret);
4242 +       if (ret == -EEXIST) {
4243 +               path_put(&par_path);
4244 +               inode_unlock(dir->d_inode);
4245 +               mnt_drop_write(new_path->mnt);
4246 +               path_put(new_path);
4247 +               new_dentry = NULL;
4248 +               goto retry;
4249 +       }
4250 +       else if (ret < 0)
4251 +               goto out_unlock_new;
4252 +
4253 +       /* the old file went away */
4254 +       ret = -ENOENT;
4255 +       if ((redo = d_unhashed(old_dentry)))
4256 +               goto out_unlock_new;
4257 +
4258 +       /* doesn't change refs for old_path */
4259 +       old_file = dentry_open(&old_path, O_RDONLY, current_cred());
4260 +       vxdprintk(VXD_CBIT(misc, 2),
4261 +               "dentry_open(old): %p", old_file);
4262 +       if (IS_ERR(old_file)) {
4263 +               ret = PTR_ERR(old_file);
4264 +               goto out_unlock_new;
4265 +       }
4266 +
4267 +       /* doesn't change refs for new_path */
4268 +       new_file = dentry_open(new_path, O_WRONLY, current_cred());
4269 +       vxdprintk(VXD_CBIT(misc, 2),
4270 +               "dentry_open(new): %p", new_file);
4271 +       if (IS_ERR(new_file)) {
4272 +               ret = PTR_ERR(new_file);
4273 +               goto out_fput_old;
4274 +       }
4275 +
4276 +       /* unlock the inode from filename_create() */
4277 +       inode_unlock(dir->d_inode);
4278 +
4279 +       /* drop write access to mnt */
4280 +       mnt_drop_write(new_path->mnt);
4281 +
4282 +       drop = 0;
4283 +
4284 +       size = i_size_read(old_file->f_path.dentry->d_inode);
4285 +       ret = do_cow_splice(old_file, new_file, size);
4286 +       vxdprintk(VXD_CBIT(misc, 2), "do_splice_direct: %d", ret);
4287 +       if (ret < 0) {
4288 +               goto out_fput_both;
4289 +       } else if (ret < size) {
4290 +               ret = -ENOSPC;
4291 +               goto out_fput_both;
4292 +       } else {
4293 +               struct inode *old_inode = old_dentry->d_inode;
4294 +               struct inode *new_inode = new_dentry->d_inode;
4295 +               struct iattr attr = {
4296 +                       .ia_uid = old_inode->i_uid,
4297 +                       .ia_gid = old_inode->i_gid,
4298 +                       .ia_valid = ATTR_UID | ATTR_GID
4299 +                       };
4300 +
4301 +               setattr_copy(new_inode, &attr);
4302 +               mark_inode_dirty(new_inode);
4303 +       }
4304 +
4305 +       /* lock rename mutex */
4306 +       mutex_lock(&old_dentry->d_inode->i_sb->s_vfs_rename_mutex);
4307 +
4308 +       /* drop out late */
4309 +       ret = -ENOENT;
4310 +       if ((redo = d_unhashed(old_dentry)))
4311 +               goto out_unlock;
4312 +
4313 +       vxdprintk(VXD_CBIT(misc, 2),
4314 +               "vfs_rename: [" VS_Q("%*s") ":%d] -> [" VS_Q("%*s") ":%d]",
4315 +               new_dentry->d_name.len, new_dentry->d_name.name,
4316 +               new_dentry->d_name.len,
4317 +               old_dentry->d_name.len, old_dentry->d_name.name,
4318 +               old_dentry->d_name.len);
4319 +       ret = vfs_rename(par_path.dentry->d_inode, new_dentry,
4320 +               old_dentry->d_parent->d_inode, old_dentry, NULL, 0);
4321 +       vxdprintk(VXD_CBIT(misc, 2), "vfs_rename: %d", ret);
4322 +
4323 +out_unlock:
4324 +       mutex_unlock(&old_dentry->d_inode->i_sb->s_vfs_rename_mutex);
4325 +
4326 +out_fput_both:
4327 +       vxdprintk(VXD_CBIT(misc, 3),
4328 +               "fput(new_file=%p[#%ld])", new_file,
4329 +               atomic_long_read(&new_file->f_count));
4330 +       fput(new_file);
4331 +
4332 +out_fput_old:
4333 +       vxdprintk(VXD_CBIT(misc, 3),
4334 +               "fput(old_file=%p[#%ld])", old_file,
4335 +               atomic_long_read(&old_file->f_count));
4336 +       fput(old_file);
4337 +
4338 +out_unlock_new:
4339 +       /* drop references from par_path */
4340 +       path_put(&par_path);
4341 +
4342 +       if (drop) {
4343 +               /* unlock the inode from filename_create() */
4344 +               inode_unlock(dir->d_inode);
4345 +
4346 +               /* drop write access to mnt */
4347 +               mnt_drop_write(new_path->mnt);
4348 +       }
4349 +
4350 +       if (!ret)
4351 +               goto out_redo;
4352 +
4353 +       /* error path cleanup */
4354 +       vfs_unlink(dir->d_inode, new_dentry, NULL);
4355 +
4356 +out_redo:
4357 +       if (!redo)
4358 +               goto out_rel_both;
4359 +
4360 +       /* lookup dentry once again
4361 +          old_path will be freed as old_path in out_rel_old */
4362 +       ret = filename_lookup(AT_FDCWD, filename, LOOKUP_FOLLOW, &old_path, NULL);
4363 +       if (ret)
4364 +               goto out_rel_both;
4365 +
4366 +       /* drop reference on new_dentry */
4367 +       dput(new_dentry);
4368 +       new_dentry = old_path.dentry;
4369 +       dget(new_dentry);
4370 +       vxdprintk(VXD_CBIT(misc, 2),
4371 +               "do_path_lookup(redo): %p [" VS_Q("%.*s") ":%d]",
4372 +               new_dentry,
4373 +               new_dentry->d_name.len, new_dentry->d_name.name,
4374 +               new_dentry->d_name.len);
4375 +
4376 +out_rel_both:
4377 +       dump_path("put (new)", new_path);
4378 +       if (new_path)
4379 +               path_put(new_path);
4380 +out_rel_old:
4381 +       dump_path("put (old)", &old_path);
4382 +       path_put(&old_path);
4383 +out_free_path:
4384 +       kfree(path);
4385 +out:
4386 +       if (ret) {
4387 +               dput(new_dentry);
4388 +               new_dentry = ERR_PTR(ret);
4389 +       }
4390 +       // if (!IS_ERR(filename))
4391 +       //        putname(filename);
4392 +       vxdprintk(VXD_CBIT(misc, 3),
4393 +               "cow_break_link returning with %p", new_dentry);
4394 +       return new_dentry;
4395 +}
4396 +
4397 +#endif
4398 +
4399 +int    vx_info_mnt_namespace(struct mnt_namespace *ns, char *buffer)
4400 +{
4401 +       struct path path;
4402 +       struct vfsmount *vmnt;
4403 +       char *pstr, *root;
4404 +       int length = 0;
4405 +
4406 +       pstr = kmalloc(PATH_MAX, GFP_KERNEL);
4407 +       if (!pstr)
4408 +               return 0;
4409 +
4410 +       vmnt = &ns->root->mnt;
4411 +       path.mnt = vmnt;
4412 +       path.dentry = vmnt->mnt_root;
4413 +       root = d_path(&path, pstr, PATH_MAX - 2);
4414 +       length = sprintf(buffer + length,
4415 +               "Namespace:\t%p [#%u]\n"
4416 +               "RootPath:\t%s\n",
4417 +               ns, atomic_read(&ns->count),
4418 +               root);
4419 +       kfree(pstr);
4420 +       return length;
4421 +}
4422 +
4423 +EXPORT_SYMBOL(vx_info_mnt_namespace);
4424 +
4425  /* get the link contents into pagecache */
4426  const char *page_get_link(struct dentry *dentry, struct inode *inode,
4427                           struct delayed_call *callback)
4428 diff -urNp -x '*.orig' linux-4.9/fs/namespace.c linux-4.9/fs/namespace.c
4429 --- linux-4.9/fs/namespace.c    2021-02-24 15:47:32.290675776 +0100
4430 +++ linux-4.9/fs/namespace.c    2021-02-24 15:47:45.074409033 +0100
4431 @@ -24,6 +24,11 @@
4432  #include <linux/magic.h>
4433  #include <linux/bootmem.h>
4434  #include <linux/task_work.h>
4435 +#include <linux/vs_base.h>
4436 +#include <linux/vs_context.h>
4437 +#include <linux/vs_tag.h>
4438 +#include <linux/vserver/space.h>
4439 +#include <linux/vserver/global.h>
4440  #include "pnode.h"
4441  #include "internal.h"
4442
4443 @@ -980,6 +985,10 @@ vfs_kern_mount(struct file_system_type *
4444         if (!type)
4445                 return ERR_PTR(-ENODEV);
4446
4447 +       if ((type->fs_flags & FS_BINARY_MOUNTDATA) &&
4448 +               !vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT))
4449 +               return ERR_PTR(-EPERM);
4450 +
4451         mnt = alloc_vfsmnt(name);
4452         if (!mnt)
4453                 return ERR_PTR(-ENOMEM);
4454 @@ -1071,6 +1080,7 @@ static struct mount *clone_mnt(struct mo
4455         mnt->mnt.mnt_root = dget(root);
4456         mnt->mnt_mountpoint = mnt->mnt.mnt_root;
4457         mnt->mnt_parent = mnt;
4458 +       mnt->mnt_tag = old->mnt_tag;
4459         lock_mount_hash();
4460         list_add_tail(&mnt->mnt_instance, &sb->s_mounts);
4461         unlock_mount_hash();
4462 @@ -1666,7 +1676,8 @@ out_unlock:
4463   */
4464  static inline bool may_mount(void)
4465  {
4466 -       return ns_capable(current->nsproxy->mnt_ns->user_ns, CAP_SYS_ADMIN);
4467 +       return vx_ns_capable(current->nsproxy->mnt_ns->user_ns,
4468 +               CAP_SYS_ADMIN, VXC_SECURE_MOUNT);
4469  }
4470
4471  static inline bool may_mandlock(void)
4472 @@ -2181,6 +2192,7 @@ static int do_change_type(struct path *p
4473                 if (err)
4474                         goto out_unlock;
4475         }
4476 +       // mnt->mnt_flags = mnt_flags;
4477
4478         lock_mount_hash();
4479         for (m = mnt; m; m = (recurse ? next_mnt(m, mnt) : NULL))
4480 @@ -2209,12 +2221,14 @@ static bool has_locked_children(struct m
4481   * do loopback mount.
4482   */
4483  static int do_loopback(struct path *path, const char *old_name,
4484 -                               int recurse)
4485 +       vtag_t tag, unsigned long flags, int mnt_flags)
4486  {
4487         struct path old_path;
4488         struct mount *mnt = NULL, *old, *parent;
4489         struct mountpoint *mp;
4490 +       int recurse = flags & MS_REC;
4491         int err;
4492 +
4493         if (!old_name || !*old_name)
4494                 return -EINVAL;
4495         err = kern_path(old_name, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &old_path);
4496 @@ -2294,7 +2308,7 @@ static int change_mount_flags(struct vfs
4497   * on it - tough luck.
4498   */
4499  static int do_remount(struct path *path, int flags, int mnt_flags,
4500 -                     void *data)
4501 +       void *data, vxid_t xid)
4502  {
4503         int err;
4504         struct super_block *sb = path->mnt->mnt_sb;
4505 @@ -2779,6 +2793,7 @@ long do_mount(const char *dev_name, cons
4506         struct path path;
4507         int retval = 0;
4508         int mnt_flags = 0;
4509 +       vtag_t tag = 0;
4510
4511         /* Discard magic */
4512         if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
4513 @@ -2806,6 +2821,12 @@ long do_mount(const char *dev_name, cons
4514         if (!(flags & MS_NOATIME))
4515                 mnt_flags |= MNT_RELATIME;
4516
4517 +       if (dx_parse_tag(data_page, &tag, 1, &mnt_flags, &flags)) {
4518 +               /* FIXME: bind and re-mounts get the tag flag? */
4519 +               if (flags & (MS_BIND|MS_REMOUNT))
4520 +                       flags |= MS_TAGID;
4521 +       }
4522 +
4523         /* Separate the per-mountpoint flags */
4524         if (flags & MS_NOSUID)
4525                 mnt_flags |= MNT_NOSUID;
4526 @@ -2830,15 +2851,18 @@ long do_mount(const char *dev_name, cons
4527                 mnt_flags |= path.mnt->mnt_flags & MNT_ATIME_MASK;
4528         }
4529
4530 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_DEV_MOUNT))
4531 +               mnt_flags |= MNT_NODEV;
4532 +
4533         flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN |
4534                    MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
4535                    MS_STRICTATIME | MS_NOREMOTELOCK | MS_SUBMOUNT);
4536
4537         if (flags & MS_REMOUNT)
4538                 retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags,
4539 -                                   data_page);
4540 +                                   data_page, tag);
4541         else if (flags & MS_BIND)
4542 -               retval = do_loopback(&path, dev_name, flags & MS_REC);
4543 +               retval = do_loopback(&path, dev_name, tag, flags, mnt_flags);
4544         else if (flags & (MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
4545                 retval = do_change_type(&path, flags);
4546         else if (flags & MS_MOVE)
4547 @@ -2979,6 +3003,7 @@ struct mnt_namespace *copy_mnt_ns(unsign
4548                         p = next_mnt(p, old);
4549         }
4550         namespace_unlock();
4551 +       atomic_inc(&vs_global_mnt_ns);
4552
4553         if (rootmnt)
4554                 mntput(rootmnt);
4555 @@ -3154,9 +3179,10 @@ SYSCALL_DEFINE2(pivot_root, const char _
4556         new_mnt = real_mount(new.mnt);
4557         root_mnt = real_mount(root.mnt);
4558         old_mnt = real_mount(old.mnt);
4559 -       if (IS_MNT_SHARED(old_mnt) ||
4560 +       if ((IS_MNT_SHARED(old_mnt) ||
4561                 IS_MNT_SHARED(new_mnt->mnt_parent) ||
4562 -               IS_MNT_SHARED(root_mnt->mnt_parent))
4563 +               IS_MNT_SHARED(root_mnt->mnt_parent)) &&
4564 +               !vx_flags(VXF_STATE_SETUP, 0))
4565                 goto out4;
4566         if (!check_mnt(root_mnt) || !check_mnt(new_mnt))
4567                 goto out4;
4568 @@ -3294,6 +3320,7 @@ void put_mnt_ns(struct mnt_namespace *ns
4569         if (!atomic_dec_and_test(&ns->count))
4570                 return;
4571         drop_collected_mounts(&ns->root->mnt);
4572 +       atomic_dec(&vs_global_mnt_ns);
4573         free_mnt_ns(ns);
4574  }
4575
4576 diff -urNp -x '*.orig' linux-4.9/fs/nfs/client.c linux-4.9/fs/nfs/client.c
4577 --- linux-4.9/fs/nfs/client.c   2021-02-24 15:47:32.290675776 +0100
4578 +++ linux-4.9/fs/nfs/client.c   2021-02-24 15:47:45.074409033 +0100
4579 @@ -586,6 +586,9 @@ int nfs_init_server_rpcclient(struct nfs
4580         if (server->flags & NFS_MOUNT_SOFT)
4581                 server->client->cl_softrtry = 1;
4582
4583 +       server->client->cl_tag = 0;
4584 +       if (server->flags & NFS_MOUNT_TAGGED)
4585 +               server->client->cl_tag = 1;
4586         return 0;
4587  }
4588  EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient);
4589 @@ -762,6 +765,10 @@ static void nfs_server_set_fsinfo(struct
4590                 server->acdirmin = server->acdirmax = 0;
4591         }
4592
4593 +       /* FIXME: needs fsinfo
4594 +       if (server->flags & NFS_MOUNT_TAGGED)
4595 +               sb->s_flags |= MS_TAGGED;       */
4596 +
4597         server->maxfilesize = fsinfo->maxfilesize;
4598
4599         server->time_delta = fsinfo->time_delta;
4600 diff -urNp -x '*.orig' linux-4.9/fs/nfs/dir.c linux-4.9/fs/nfs/dir.c
4601 --- linux-4.9/fs/nfs/dir.c      2021-02-24 15:47:32.294009214 +0100
4602 +++ linux-4.9/fs/nfs/dir.c      2021-02-24 15:47:45.074409033 +0100
4603 @@ -37,6 +37,7 @@
4604  #include <linux/sched.h>
4605  #include <linux/kmemleak.h>
4606  #include <linux/xattr.h>
4607 +#include <linux/vs_tag.h>
4608
4609  #include "delegation.h"
4610  #include "iostat.h"
4611 @@ -1431,6 +1432,7 @@ struct dentry *nfs_lookup(struct inode *
4612         /* Success: notify readdir to use READDIRPLUS */
4613         nfs_advise_use_readdirplus(dir);
4614
4615 +       dx_propagate_tag(nd, inode);
4616  no_entry:
4617         res = d_splice_alias(inode, dentry);
4618         if (res != NULL) {
4619 diff -urNp -x '*.orig' linux-4.9/fs/nfs/inode.c linux-4.9/fs/nfs/inode.c
4620 --- linux-4.9/fs/nfs/inode.c    2021-02-24 15:47:32.294009214 +0100
4621 +++ linux-4.9/fs/nfs/inode.c    2021-02-24 15:47:45.074409033 +0100
4622 @@ -38,6 +38,7 @@
4623  #include <linux/slab.h>
4624  #include <linux/compat.h>
4625  #include <linux/freezer.h>
4626 +#include <linux/vs_tag.h>
4627
4628  #include <asm/uaccess.h>
4629
4630 @@ -383,6 +384,8 @@ nfs_fhget(struct super_block *sb, struct
4631         if (inode->i_state & I_NEW) {
4632                 struct nfs_inode *nfsi = NFS_I(inode);
4633                 unsigned long now = jiffies;
4634 +               kuid_t kuid;
4635 +               kgid_t kgid;
4636
4637                 /* We set i_ino for the few things that still rely on it,
4638                  * such as stat(2) */
4639 @@ -427,8 +430,8 @@ nfs_fhget(struct super_block *sb, struct
4640                 inode->i_version = 0;
4641                 inode->i_size = 0;
4642                 clear_nlink(inode);
4643 -               inode->i_uid = make_kuid(&init_user_ns, -2);
4644 -               inode->i_gid = make_kgid(&init_user_ns, -2);
4645 +               kuid = make_kuid(&init_user_ns, -2);
4646 +               kgid = make_kgid(&init_user_ns, -2);
4647                 inode->i_blocks = 0;
4648                 memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
4649                 nfsi->write_io = 0;
4650 @@ -463,11 +466,11 @@ nfs_fhget(struct super_block *sb, struct
4651                 else if (nfs_server_capable(inode, NFS_CAP_NLINK))
4652                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4653                 if (fattr->valid & NFS_ATTR_FATTR_OWNER)
4654 -                       inode->i_uid = fattr->uid;
4655 +                       kuid = fattr->uid;
4656                 else if (nfs_server_capable(inode, NFS_CAP_OWNER))
4657                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4658                 if (fattr->valid & NFS_ATTR_FATTR_GROUP)
4659 -                       inode->i_gid = fattr->gid;
4660 +                       kgid = fattr->gid;
4661                 else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP))
4662                         nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
4663                 if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
4664 @@ -478,6 +481,10 @@ nfs_fhget(struct super_block *sb, struct
4665                          */
4666                         inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
4667                 }
4668 +               inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
4669 +               inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
4670 +               inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, GLOBAL_ROOT_TAG);
4671 +                               /* maybe fattr->xid someday */
4672
4673                 nfs_setsecurity(inode, fattr, label);
4674
4675 @@ -619,6 +626,8 @@ void nfs_setattr_update_inode(struct ino
4676                         inode->i_uid = attr->ia_uid;
4677                 if ((attr->ia_valid & ATTR_GID) != 0)
4678                         inode->i_gid = attr->ia_gid;
4679 +               if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
4680 +                       inode->i_tag = attr->ia_tag;
4681                 nfs_set_cache_invalid(inode, NFS_INO_INVALID_ACCESS
4682                                 | NFS_INO_INVALID_ACL);
4683         }
4684 @@ -1273,7 +1282,9 @@ static int nfs_check_inode_attributes(st
4685         struct nfs_inode *nfsi = NFS_I(inode);
4686         loff_t cur_size, new_isize;
4687         unsigned long invalid = 0;
4688 -
4689 +       kuid_t kuid;
4690 +       kgid_t kgid;
4691 +       ktag_t ktag;
4692
4693         if (nfs_have_delegated_attributes(inode))
4694                 return 0;
4695 @@ -1302,13 +1313,18 @@ static int nfs_check_inode_attributes(st
4696                 }
4697         }
4698
4699 +       kuid = INOTAG_KUID(DX_TAG(inode), fattr->uid, fattr->gid);
4700 +       kgid = INOTAG_KGID(DX_TAG(inode), fattr->uid, fattr->gid);
4701 +       ktag = INOTAG_KTAG(DX_TAG(inode), fattr->uid, fattr->gid, GLOBAL_ROOT_TAG);
4702 +
4703         /* Have any file permissions changed? */
4704         if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
4705                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4706 -       if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid))
4707 +       if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, kuid))
4708                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4709 -       if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid))
4710 +       if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, kgid))
4711                 invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
4712 +               /* maybe check for tag too? */
4713
4714         /* Has the link count changed? */
4715         if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink)
4716 @@ -1667,6 +1683,9 @@ static int nfs_update_inode(struct inode
4717         unsigned long save_cache_validity;
4718         bool have_writers = nfs_file_has_buffered_writers(nfsi);
4719         bool cache_revalidated = true;
4720 +       kuid_t kuid;
4721 +       kgid_t kgid;
4722 +       ktag_t ktag;
4723
4724         dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n",
4725                         __func__, inode->i_sb->s_id, inode->i_ino,
4726 @@ -1786,6 +1805,9 @@ static int nfs_update_inode(struct inode
4727                 cache_revalidated = false;
4728         }
4729
4730 +       kuid = TAGINO_KUID(DX_TAG(inode), inode->i_uid, inode->i_tag);
4731 +       kgid = TAGINO_KGID(DX_TAG(inode), inode->i_gid, inode->i_tag);
4732 +       ktag = TAGINO_KTAG(DX_TAG(inode), inode->i_tag);
4733
4734         if (fattr->valid & NFS_ATTR_FATTR_ATIME)
4735                 memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
4736 @@ -1840,6 +1862,10 @@ static int nfs_update_inode(struct inode
4737                 cache_revalidated = false;
4738         }
4739
4740 +       inode->i_uid = INOTAG_KUID(DX_TAG(inode), kuid, kgid);
4741 +       inode->i_gid = INOTAG_KGID(DX_TAG(inode), kuid, kgid);
4742 +       inode->i_tag = INOTAG_KTAG(DX_TAG(inode), kuid, kgid, ktag);
4743 +
4744         if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
4745                 if (inode->i_nlink != fattr->nlink) {
4746                         invalid |= NFS_INO_INVALID_ATTR;
4747 diff -urNp -x '*.orig' linux-4.9/fs/nfs/nfs3xdr.c linux-4.9/fs/nfs/nfs3xdr.c
4748 --- linux-4.9/fs/nfs/nfs3xdr.c  2016-12-11 20:17:54.000000000 +0100
4749 +++ linux-4.9/fs/nfs/nfs3xdr.c  2021-02-24 15:47:45.074409033 +0100
4750 @@ -20,6 +20,7 @@
4751  #include <linux/nfs3.h>
4752  #include <linux/nfs_fs.h>
4753  #include <linux/nfsacl.h>
4754 +#include <linux/vs_tag.h>
4755  #include "internal.h"
4756
4757  #define NFSDBG_FACILITY                NFSDBG_XDR
4758 @@ -558,7 +559,8 @@ static __be32 *xdr_decode_nfstime3(__be3
4759   *             set_mtime       mtime;
4760   *     };
4761   */
4762 -static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
4763 +static void encode_sattr3(struct xdr_stream *xdr,
4764 +       const struct iattr *attr, int tag)
4765  {
4766         u32 nbytes;
4767         __be32 *p;
4768 @@ -590,15 +592,19 @@ static void encode_sattr3(struct xdr_str
4769         } else
4770                 *p++ = xdr_zero;
4771
4772 -       if (attr->ia_valid & ATTR_UID) {
4773 +       if (attr->ia_valid & ATTR_UID ||
4774 +               (tag && (attr->ia_valid & ATTR_TAG))) {
4775                 *p++ = xdr_one;
4776 -               *p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid));
4777 +               *p++ = cpu_to_be32(from_kuid(&init_user_ns,
4778 +                       TAGINO_KUID(tag, attr->ia_uid, attr->ia_tag)));
4779         } else
4780                 *p++ = xdr_zero;
4781
4782 -       if (attr->ia_valid & ATTR_GID) {
4783 +       if (attr->ia_valid & ATTR_GID ||
4784 +               (tag && (attr->ia_valid & ATTR_TAG))) {
4785                 *p++ = xdr_one;
4786 -               *p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid));
4787 +               *p++ = cpu_to_be32(from_kgid(&init_user_ns,
4788 +                       TAGINO_KGID(tag, attr->ia_gid, attr->ia_tag)));
4789         } else
4790                 *p++ = xdr_zero;
4791
4792 @@ -887,7 +893,7 @@ static void nfs3_xdr_enc_setattr3args(st
4793                                       const struct nfs3_sattrargs *args)
4794  {
4795         encode_nfs_fh3(xdr, args->fh);
4796 -       encode_sattr3(xdr, args->sattr);
4797 +       encode_sattr3(xdr, args->sattr, req->rq_task->tk_client->cl_tag);
4798         encode_sattrguard3(xdr, args);
4799  }
4800
4801 @@ -1037,13 +1043,13 @@ static void nfs3_xdr_enc_write3args(stru
4802   *     };
4803   */
4804  static void encode_createhow3(struct xdr_stream *xdr,
4805 -                             const struct nfs3_createargs *args)
4806 +       const struct nfs3_createargs *args, int tag)
4807  {
4808         encode_uint32(xdr, args->createmode);
4809         switch (args->createmode) {
4810         case NFS3_CREATE_UNCHECKED:
4811         case NFS3_CREATE_GUARDED:
4812 -               encode_sattr3(xdr, args->sattr);
4813 +               encode_sattr3(xdr, args->sattr, tag);
4814                 break;
4815         case NFS3_CREATE_EXCLUSIVE:
4816                 encode_createverf3(xdr, args->verifier);
4817 @@ -1058,7 +1064,7 @@ static void nfs3_xdr_enc_create3args(str
4818                                      const struct nfs3_createargs *args)
4819  {
4820         encode_diropargs3(xdr, args->fh, args->name, args->len);
4821 -       encode_createhow3(xdr, args);
4822 +       encode_createhow3(xdr, args, req->rq_task->tk_client->cl_tag);
4823  }
4824
4825  /*
4826 @@ -1074,7 +1080,7 @@ static void nfs3_xdr_enc_mkdir3args(stru
4827                                     const struct nfs3_mkdirargs *args)
4828  {
4829         encode_diropargs3(xdr, args->fh, args->name, args->len);
4830 -       encode_sattr3(xdr, args->sattr);
4831 +       encode_sattr3(xdr, args->sattr, req->rq_task->tk_client->cl_tag);
4832  }
4833
4834  /*
4835 @@ -1091,9 +1097,9 @@ static void nfs3_xdr_enc_mkdir3args(stru
4836   *     };
4837   */
4838  static void encode_symlinkdata3(struct xdr_stream *xdr,
4839 -                               const struct nfs3_symlinkargs *args)
4840 +       const struct nfs3_symlinkargs *args, int tag)
4841  {
4842 -       encode_sattr3(xdr, args->sattr);
4843 +       encode_sattr3(xdr, args->sattr, tag);
4844         encode_nfspath3(xdr, args->pages, args->pathlen);
4845  }
4846
4847 @@ -1102,7 +1108,7 @@ static void nfs3_xdr_enc_symlink3args(st
4848                                       const struct nfs3_symlinkargs *args)
4849  {
4850         encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
4851 -       encode_symlinkdata3(xdr, args);
4852 +       encode_symlinkdata3(xdr, args, req->rq_task->tk_client->cl_tag);
4853         xdr->buf->flags |= XDRBUF_WRITE;
4854  }
4855
4856 @@ -1131,24 +1137,24 @@ static void nfs3_xdr_enc_symlink3args(st
4857   *     };
4858   */
4859  static void encode_devicedata3(struct xdr_stream *xdr,
4860 -                              const struct nfs3_mknodargs *args)
4861 +       const struct nfs3_mknodargs *args, int tag)
4862  {
4863 -       encode_sattr3(xdr, args->sattr);
4864 +       encode_sattr3(xdr, args->sattr, tag);
4865         encode_specdata3(xdr, args->rdev);
4866  }
4867
4868  static void encode_mknoddata3(struct xdr_stream *xdr,
4869 -                             const struct nfs3_mknodargs *args)
4870 +       const struct nfs3_mknodargs *args, int tag)
4871  {
4872         encode_ftype3(xdr, args->type);
4873         switch (args->type) {
4874         case NF3CHR:
4875         case NF3BLK:
4876 -               encode_devicedata3(xdr, args);
4877 +               encode_devicedata3(xdr, args, tag);
4878                 break;
4879         case NF3SOCK:
4880         case NF3FIFO:
4881 -               encode_sattr3(xdr, args->sattr);
4882 +               encode_sattr3(xdr, args->sattr, tag);
4883                 break;
4884         case NF3REG:
4885         case NF3DIR:
4886 @@ -1163,7 +1169,7 @@ static void nfs3_xdr_enc_mknod3args(stru
4887                                     const struct nfs3_mknodargs *args)
4888  {
4889         encode_diropargs3(xdr, args->fh, args->name, args->len);
4890 -       encode_mknoddata3(xdr, args);
4891 +       encode_mknoddata3(xdr, args, req->rq_task->tk_client->cl_tag);
4892  }
4893
4894  /*
4895 diff -urNp -x '*.orig' linux-4.9/fs/nfs/super.c linux-4.9/fs/nfs/super.c
4896 --- linux-4.9/fs/nfs/super.c    2021-02-24 15:47:32.300676089 +0100
4897 +++ linux-4.9/fs/nfs/super.c    2021-02-24 15:47:45.074409033 +0100
4898 @@ -54,6 +54,7 @@
4899  #include <linux/parser.h>
4900  #include <linux/nsproxy.h>
4901  #include <linux/rcupdate.h>
4902 +#include <linux/vs_tag.h>
4903
4904  #include <asm/uaccess.h>
4905
4906 @@ -102,6 +103,7 @@ enum {
4907         Opt_mountport,
4908         Opt_mountvers,
4909         Opt_minorversion,
4910 +       Opt_tagid,
4911
4912         /* Mount options that take string arguments */
4913         Opt_nfsvers,
4914 @@ -114,6 +116,9 @@ enum {
4915         /* Special mount options */
4916         Opt_userspace, Opt_deprecated, Opt_sloppy,
4917
4918 +       /* Linux-VServer tagging options */
4919 +       Opt_tag, Opt_notag,
4920 +
4921         Opt_err
4922  };
4923
4924 @@ -183,6 +188,10 @@ static const match_table_t nfs_mount_opt
4925         { Opt_fscache_uniq, "fsc=%s" },
4926         { Opt_local_lock, "local_lock=%s" },
4927
4928 +       { Opt_tag, "tag" },
4929 +       { Opt_notag, "notag" },
4930 +       { Opt_tagid, "tagid=%u" },
4931 +
4932         /* The following needs to be listed after all other options */
4933         { Opt_nfsvers, "v%s" },
4934
4935 @@ -644,6 +653,7 @@ static void nfs_show_mount_options(struc
4936                 { NFS_MOUNT_NORDIRPLUS, ",nordirplus", "" },
4937                 { NFS_MOUNT_UNSHARED, ",nosharecache", "" },
4938                 { NFS_MOUNT_NORESVPORT, ",noresvport", "" },
4939 +               { NFS_MOUNT_TAGGED, ",tag", "" },
4940                 { 0, NULL, NULL }
4941         };
4942         const struct proc_nfs_info *nfs_infop;
4943 @@ -1341,6 +1351,14 @@ static int nfs_parse_mount_options(char
4944                 case Opt_nomigration:
4945                         mnt->options &= ~NFS_OPTION_MIGRATION;
4946                         break;
4947 +#ifndef CONFIG_TAGGING_NONE
4948 +               case Opt_tag:
4949 +                       mnt->flags |= NFS_MOUNT_TAGGED;
4950 +                       break;
4951 +               case Opt_notag:
4952 +                       mnt->flags &= ~NFS_MOUNT_TAGGED;
4953 +                       break;
4954 +#endif
4955
4956                 /*
4957                  * options that take numeric values
4958 @@ -1427,6 +1445,12 @@ static int nfs_parse_mount_options(char
4959                                 goto out_invalid_value;
4960                         mnt->minorversion = option;
4961                         break;
4962 +#ifdef CONFIG_PROPAGATE
4963 +               case Opt_tagid:
4964 +                       /* use args[0] */
4965 +                       nfs_data.flags |= NFS_MOUNT_TAGGED;
4966 +                       break;
4967 +#endif
4968
4969                 /*
4970                  * options that take text values
4971 diff -urNp -x '*.orig' linux-4.9/fs/nfsd/auth.c linux-4.9/fs/nfsd/auth.c
4972 --- linux-4.9/fs/nfsd/auth.c    2021-02-24 15:47:32.300676089 +0100
4973 +++ linux-4.9/fs/nfsd/auth.c    2021-02-24 15:47:45.074409033 +0100
4974 @@ -1,6 +1,7 @@
4975  /* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> */
4976
4977  #include <linux/sched.h>
4978 +#include <linux/vs_tag.h>
4979  #include "nfsd.h"
4980  #include "auth.h"
4981
4982 @@ -35,6 +36,9 @@ int nfsd_setuser(struct svc_rqst *rqstp,
4983
4984         new->fsuid = rqstp->rq_cred.cr_uid;
4985         new->fsgid = rqstp->rq_cred.cr_gid;
4986 +       /* FIXME: this desperately needs a tag :)
4987 +       new->xid = (vxid_t)INOTAG_TAG(DX_TAG_NFSD, cred.cr_uid, cred.cr_gid, 0);
4988 +                       */
4989
4990         rqgi = rqstp->rq_cred.cr_group_info;
4991
4992 diff -urNp -x '*.orig' linux-4.9/fs/nfsd/nfs3xdr.c linux-4.9/fs/nfsd/nfs3xdr.c
4993 --- linux-4.9/fs/nfsd/nfs3xdr.c 2021-02-24 15:47:32.300676089 +0100
4994 +++ linux-4.9/fs/nfsd/nfs3xdr.c 2021-02-24 15:47:45.077742470 +0100
4995 @@ -8,6 +8,7 @@
4996
4997  #include <linux/namei.h>
4998  #include <linux/sunrpc/svc_xprt.h>
4999 +#include <linux/vs_tag.h>
5000  #include "xdr3.h"
5001  #include "auth.h"
5002  #include "netns.h"
5003 @@ -98,6 +99,8 @@ static __be32 *
5004  decode_sattr3(__be32 *p, struct iattr *iap)
5005  {
5006         u32     tmp;
5007 +       kuid_t  kuid = GLOBAL_ROOT_UID;
5008 +       kgid_t  kgid = GLOBAL_ROOT_GID;
5009
5010         iap->ia_valid = 0;
5011
5012 @@ -106,15 +109,18 @@ decode_sattr3(__be32 *p, struct iattr *i
5013                 iap->ia_mode = ntohl(*p++);
5014         }
5015         if (*p++) {
5016 -               iap->ia_uid = make_kuid(&init_user_ns, ntohl(*p++));
5017 +               kuid = make_kuid(&init_user_ns, ntohl(*p++));
5018                 if (uid_valid(iap->ia_uid))
5019                         iap->ia_valid |= ATTR_UID;
5020         }
5021         if (*p++) {
5022 -               iap->ia_gid = make_kgid(&init_user_ns, ntohl(*p++));
5023 +               kgid = make_kgid(&init_user_ns, ntohl(*p++));
5024                 if (gid_valid(iap->ia_gid))
5025                         iap->ia_valid |= ATTR_GID;
5026         }
5027 +       iap->ia_uid = INOTAG_KUID(DX_TAG_NFSD, kuid, kgid);
5028 +       iap->ia_gid = INOTAG_KGID(DX_TAG_NFSD, kuid, kgid);
5029 +       iap->ia_tag = INOTAG_KTAG(DX_TAG_NFSD, kuid, kgid, GLOBAL_ROOT_TAG);
5030         if (*p++) {
5031                 u64     newsize;
5032
5033 @@ -167,8 +173,12 @@ encode_fattr3(struct svc_rqst *rqstp, __
5034         *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
5035         *p++ = htonl((u32) (stat->mode & S_IALLUGO));
5036         *p++ = htonl((u32) stat->nlink);
5037 -       *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
5038 -       *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
5039 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
5040 +               TAGINO_KUID(0 /* FIXME: DX_TAG(dentry->d_inode) */,
5041 +               stat->uid, stat->tag)));
5042 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
5043 +               TAGINO_KGID(0 /* FIXME: DX_TAG(dentry->d_inode) */,
5044 +               stat->gid, stat->tag)));
5045         if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) {
5046                 p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
5047         } else {
5048 diff -urNp -x '*.orig' linux-4.9/fs/nfsd/nfs4xdr.c linux-4.9/fs/nfsd/nfs4xdr.c
5049 --- linux-4.9/fs/nfsd/nfs4xdr.c 2021-02-24 15:47:32.304009527 +0100
5050 +++ linux-4.9/fs/nfsd/nfs4xdr.c 2021-02-24 15:47:45.077742470 +0100
5051 @@ -40,6 +40,7 @@
5052  #include <linux/utsname.h>
5053  #include <linux/pagemap.h>
5054  #include <linux/sunrpc/svcauth_gss.h>
5055 +#include <linux/vs_tag.h>
5056
5057  #include "idmap.h"
5058  #include "acl.h"
5059 @@ -2679,12 +2680,16 @@ out_acl:
5060                 *p++ = cpu_to_be32(stat.nlink);
5061         }
5062         if (bmval1 & FATTR4_WORD1_OWNER) {
5063 -               status = nfsd4_encode_user(xdr, rqstp, stat.uid);
5064 +               status = nfsd4_encode_user(xdr, rqstp,
5065 +                       TAGINO_KUID(DX_TAG(dentry->d_inode),
5066 +                               stat.uid, stat.tag));
5067                 if (status)
5068                         goto out;
5069         }
5070         if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
5071 -               status = nfsd4_encode_group(xdr, rqstp, stat.gid);
5072 +               status = nfsd4_encode_group(xdr, rqstp,
5073 +                       TAGINO_KGID(DX_TAG(dentry->d_inode),
5074 +                               stat.gid, stat.tag));
5075                 if (status)
5076                         goto out;
5077         }
5078 diff -urNp -x '*.orig' linux-4.9/fs/nfsd/nfsxdr.c linux-4.9/fs/nfsd/nfsxdr.c
5079 --- linux-4.9/fs/nfsd/nfsxdr.c  2021-02-24 15:47:32.307342964 +0100
5080 +++ linux-4.9/fs/nfsd/nfsxdr.c  2021-02-24 15:47:45.077742470 +0100
5081 @@ -7,6 +7,7 @@
5082  #include "vfs.h"
5083  #include "xdr.h"
5084  #include "auth.h"
5085 +#include <linux/vs_tag.h>
5086
5087  #define NFSDDBG_FACILITY               NFSDDBG_XDR
5088
5089 @@ -89,6 +90,8 @@ static __be32 *
5090  decode_sattr(__be32 *p, struct iattr *iap)
5091  {
5092         u32     tmp, tmp1;
5093 +       kuid_t  kuid = GLOBAL_ROOT_UID;
5094 +       kgid_t  kgid = GLOBAL_ROOT_GID;
5095
5096         iap->ia_valid = 0;
5097
5098 @@ -101,15 +104,18 @@ decode_sattr(__be32 *p, struct iattr *ia
5099                 iap->ia_mode = tmp;
5100         }
5101         if ((tmp = ntohl(*p++)) != (u32)-1) {
5102 -               iap->ia_uid = make_kuid(&init_user_ns, tmp);
5103 +               kuid = make_kuid(&init_user_ns, tmp);
5104                 if (uid_valid(iap->ia_uid))
5105                         iap->ia_valid |= ATTR_UID;
5106         }
5107         if ((tmp = ntohl(*p++)) != (u32)-1) {
5108 -               iap->ia_gid = make_kgid(&init_user_ns, tmp);
5109 +               kgid = make_kgid(&init_user_ns, tmp);
5110                 if (gid_valid(iap->ia_gid))
5111                         iap->ia_valid |= ATTR_GID;
5112         }
5113 +       iap->ia_uid = INOTAG_KUID(DX_TAG_NFSD, kuid, kgid);
5114 +       iap->ia_gid = INOTAG_KGID(DX_TAG_NFSD, kuid, kgid);
5115 +       iap->ia_tag = INOTAG_KTAG(DX_TAG_NFSD, kuid, kgid, GLOBAL_ROOT_TAG);
5116         if ((tmp = ntohl(*p++)) != (u32)-1) {
5117                 iap->ia_valid |= ATTR_SIZE;
5118                 iap->ia_size = tmp;
5119 @@ -154,8 +160,10 @@ encode_fattr(struct svc_rqst *rqstp, __b
5120         *p++ = htonl(nfs_ftypes[type >> 12]);
5121         *p++ = htonl((u32) stat->mode);
5122         *p++ = htonl((u32) stat->nlink);
5123 -       *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
5124 -       *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
5125 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
5126 +               TAGINO_KUID(DX_TAG(dentry->d_inode), stat->uid, stat->tag)));
5127 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
5128 +               TAGINO_KGID(DX_TAG(dentry->d_inode), stat->gid, stat->tag)));
5129
5130         if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
5131                 *p++ = htonl(NFS_MAXPATHLEN);
5132 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/dlmglue.c linux-4.9/fs/ocfs2/dlmglue.c
5133 --- linux-4.9/fs/ocfs2/dlmglue.c        2021-02-24 15:47:32.314009840 +0100
5134 +++ linux-4.9/fs/ocfs2/dlmglue.c        2021-02-24 15:47:45.077742470 +0100
5135 @@ -2120,6 +2120,7 @@ static void __ocfs2_stuff_meta_lvb(struc
5136         lvb->lvb_iclusters = cpu_to_be32(oi->ip_clusters);
5137         lvb->lvb_iuid      = cpu_to_be32(i_uid_read(inode));
5138         lvb->lvb_igid      = cpu_to_be32(i_gid_read(inode));
5139 +       lvb->lvb_itag      = cpu_to_be16(i_tag_read(inode));
5140         lvb->lvb_imode     = cpu_to_be16(inode->i_mode);
5141         lvb->lvb_inlink    = cpu_to_be16(inode->i_nlink);
5142         lvb->lvb_iatime_packed  =
5143 @@ -2170,6 +2171,7 @@ static void ocfs2_refresh_inode_from_lvb
5144
5145         i_uid_write(inode, be32_to_cpu(lvb->lvb_iuid));
5146         i_gid_write(inode, be32_to_cpu(lvb->lvb_igid));
5147 +       i_tag_write(inode, be16_to_cpu(lvb->lvb_itag));
5148         inode->i_mode    = be16_to_cpu(lvb->lvb_imode);
5149         set_nlink(inode, be16_to_cpu(lvb->lvb_inlink));
5150         ocfs2_unpack_timespec(&inode->i_atime,
5151 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/dlmglue.h linux-4.9/fs/ocfs2/dlmglue.h
5152 --- linux-4.9/fs/ocfs2/dlmglue.h        2021-02-24 15:47:32.314009840 +0100
5153 +++ linux-4.9/fs/ocfs2/dlmglue.h        2021-02-24 15:47:45.077742470 +0100
5154 @@ -46,7 +46,8 @@ struct ocfs2_meta_lvb {
5155         __be16       lvb_inlink;
5156         __be32       lvb_iattr;
5157         __be32       lvb_igeneration;
5158 -       __be32       lvb_reserved2;
5159 +       __be16       lvb_itag;
5160 +       __be16       lvb_reserved2;
5161  };
5162
5163  #define OCFS2_QINFO_LVB_VERSION 1
5164 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/file.c linux-4.9/fs/ocfs2/file.c
5165 --- linux-4.9/fs/ocfs2/file.c   2021-02-24 15:47:32.314009840 +0100
5166 +++ linux-4.9/fs/ocfs2/file.c   2021-02-24 15:47:45.077742470 +0100
5167 @@ -1151,7 +1151,7 @@ int ocfs2_setattr(struct dentry *dentry,
5168                 attr->ia_valid &= ~ATTR_SIZE;
5169
5170  #define OCFS2_VALID_ATTRS (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE \
5171 -                          | ATTR_GID | ATTR_UID | ATTR_MODE)
5172 +                          | ATTR_GID | ATTR_UID | ATTR_TAG | ATTR_MODE)
5173         if (!(attr->ia_valid & OCFS2_VALID_ATTRS))
5174                 return 0;
5175
5176 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/inode.c linux-4.9/fs/ocfs2/inode.c
5177 --- linux-4.9/fs/ocfs2/inode.c  2016-12-11 20:17:54.000000000 +0100
5178 +++ linux-4.9/fs/ocfs2/inode.c  2021-02-24 15:47:45.077742470 +0100
5179 @@ -28,6 +28,7 @@
5180  #include <linux/highmem.h>
5181  #include <linux/pagemap.h>
5182  #include <linux/quotaops.h>
5183 +#include <linux/vs_tag.h>
5184
5185  #include <asm/byteorder.h>
5186
5187 @@ -87,11 +88,13 @@ void ocfs2_set_inode_flags(struct inode
5188  {
5189         unsigned int flags = OCFS2_I(inode)->ip_attr;
5190
5191 -       inode->i_flags &= ~(S_IMMUTABLE |
5192 +       inode->i_flags &= ~(S_IMMUTABLE | S_IXUNLINK |
5193                 S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
5194
5195         if (flags & OCFS2_IMMUTABLE_FL)
5196                 inode->i_flags |= S_IMMUTABLE;
5197 +       if (flags & OCFS2_IXUNLINK_FL)
5198 +               inode->i_flags |= S_IXUNLINK;
5199
5200         if (flags & OCFS2_SYNC_FL)
5201                 inode->i_flags |= S_SYNC;
5202 @@ -101,25 +104,44 @@ void ocfs2_set_inode_flags(struct inode
5203                 inode->i_flags |= S_NOATIME;
5204         if (flags & OCFS2_DIRSYNC_FL)
5205                 inode->i_flags |= S_DIRSYNC;
5206 +
5207 +       inode->i_vflags &= ~(V_BARRIER | V_COW);
5208 +
5209 +       if (flags & OCFS2_BARRIER_FL)
5210 +               inode->i_vflags |= V_BARRIER;
5211 +       if (flags & OCFS2_COW_FL)
5212 +               inode->i_vflags |= V_COW;
5213  }
5214
5215  /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */
5216  void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi)
5217  {
5218         unsigned int flags = oi->vfs_inode.i_flags;
5219 +       unsigned int vflags = oi->vfs_inode.i_vflags;
5220 +
5221 +       oi->ip_attr &= ~(OCFS2_SYNC_FL | OCFS2_APPEND_FL |
5222 +                       OCFS2_IMMUTABLE_FL | OCFS2_IXUNLINK_FL |
5223 +                       OCFS2_NOATIME_FL | OCFS2_DIRSYNC_FL |
5224 +                       OCFS2_BARRIER_FL | OCFS2_COW_FL);
5225 +
5226 +       if (flags & S_IMMUTABLE)
5227 +               oi->ip_attr |= OCFS2_IMMUTABLE_FL;
5228 +       if (flags & S_IXUNLINK)
5229 +               oi->ip_attr |= OCFS2_IXUNLINK_FL;
5230
5231 -       oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL|
5232 -                       OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL);
5233         if (flags & S_SYNC)
5234                 oi->ip_attr |= OCFS2_SYNC_FL;
5235         if (flags & S_APPEND)
5236                 oi->ip_attr |= OCFS2_APPEND_FL;
5237 -       if (flags & S_IMMUTABLE)
5238 -               oi->ip_attr |= OCFS2_IMMUTABLE_FL;
5239         if (flags & S_NOATIME)
5240                 oi->ip_attr |= OCFS2_NOATIME_FL;
5241         if (flags & S_DIRSYNC)
5242                 oi->ip_attr |= OCFS2_DIRSYNC_FL;
5243 +
5244 +       if (vflags & V_BARRIER)
5245 +               oi->ip_attr |= OCFS2_BARRIER_FL;
5246 +       if (vflags & V_COW)
5247 +               oi->ip_attr |= OCFS2_COW_FL;
5248  }
5249
5250  struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno)
5251 @@ -278,6 +300,8 @@ void ocfs2_populate_inode(struct inode *
5252         struct super_block *sb;
5253         struct ocfs2_super *osb;
5254         int use_plocks = 1;
5255 +       uid_t uid;
5256 +       gid_t gid;
5257
5258         sb = inode->i_sb;
5259         osb = OCFS2_SB(sb);
5260 @@ -306,8 +330,12 @@ void ocfs2_populate_inode(struct inode *
5261         inode->i_generation = le32_to_cpu(fe->i_generation);
5262         inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
5263         inode->i_mode = le16_to_cpu(fe->i_mode);
5264 -       i_uid_write(inode, le32_to_cpu(fe->i_uid));
5265 -       i_gid_write(inode, le32_to_cpu(fe->i_gid));
5266 +       uid = le32_to_cpu(fe->i_uid);
5267 +       gid = le32_to_cpu(fe->i_gid);
5268 +       i_uid_write(inode, INOTAG_UID(DX_TAG(inode), uid, gid));
5269 +       i_gid_write(inode, INOTAG_GID(DX_TAG(inode), uid, gid));
5270 +       i_tag_write(inode, INOTAG_TAG(DX_TAG(inode), uid, gid,
5271 +               /* le16_to_cpu(raw_inode->i_raw_tag) */ 0));
5272
5273         /* Fast symlinks will have i_size but no allocated clusters. */
5274         if (S_ISLNK(inode->i_mode) && !fe->i_clusters) {
5275 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/inode.h linux-4.9/fs/ocfs2/inode.h
5276 --- linux-4.9/fs/ocfs2/inode.h  2016-12-11 20:17:54.000000000 +0100
5277 +++ linux-4.9/fs/ocfs2/inode.h  2021-02-24 15:47:45.077742470 +0100
5278 @@ -155,6 +155,7 @@ int ocfs2_mark_inode_dirty(handle_t *han
5279
5280  void ocfs2_set_inode_flags(struct inode *inode);
5281  void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
5282 +int ocfs2_sync_flags(struct inode *inode, int, int);
5283
5284  static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
5285  {
5286 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/ioctl.c linux-4.9/fs/ocfs2/ioctl.c
5287 --- linux-4.9/fs/ocfs2/ioctl.c  2021-02-24 15:47:32.314009840 +0100
5288 +++ linux-4.9/fs/ocfs2/ioctl.c  2021-02-24 15:47:45.077742470 +0100
5289 @@ -76,7 +76,41 @@ static int ocfs2_get_inode_attr(struct i
5290         return status;
5291  }
5292
5293 -static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
5294 +int ocfs2_sync_flags(struct inode *inode, int flags, int vflags)
5295 +{
5296 +       struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
5297 +       struct buffer_head *bh = NULL;
5298 +       handle_t *handle = NULL;
5299 +       int status;
5300 +
5301 +       status = ocfs2_inode_lock(inode, &bh, 1);
5302 +       if (status < 0) {
5303 +               mlog_errno(status);
5304 +               return status;
5305 +       }
5306 +       handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
5307 +       if (IS_ERR(handle)) {
5308 +               status = PTR_ERR(handle);
5309 +               mlog_errno(status);
5310 +               goto bail_unlock;
5311 +       }
5312 +
5313 +       inode->i_flags = flags;
5314 +       inode->i_vflags = vflags;
5315 +       ocfs2_get_inode_flags(OCFS2_I(inode));
5316 +
5317 +       status = ocfs2_mark_inode_dirty(handle, inode, bh);
5318 +       if (status < 0)
5319 +               mlog_errno(status);
5320 +
5321 +       ocfs2_commit_trans(osb, handle);
5322 +bail_unlock:
5323 +       ocfs2_inode_unlock(inode, 1);
5324 +       brelse(bh);
5325 +       return status;
5326 +}
5327 +
5328 +int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
5329                                 unsigned mask)
5330  {
5331         struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
5332 @@ -116,6 +150,11 @@ static int ocfs2_set_inode_attr(struct i
5333                         goto bail_unlock;
5334         }
5335
5336 +       if (IS_BARRIER(inode)) {
5337 +               vxwprintk_task(1, "messing with the barrier.");
5338 +               goto bail_unlock;
5339 +       }
5340 +
5341         handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
5342         if (IS_ERR(handle)) {
5343                 status = PTR_ERR(handle);
5344 @@ -839,6 +878,7 @@ bail:
5345         return status;
5346  }
5347
5348 +
5349  long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
5350  {
5351         struct inode *inode = file_inode(filp);
5352 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/namei.c linux-4.9/fs/ocfs2/namei.c
5353 --- linux-4.9/fs/ocfs2/namei.c  2016-12-11 20:17:54.000000000 +0100
5354 +++ linux-4.9/fs/ocfs2/namei.c  2021-02-24 15:47:45.081075908 +0100
5355 @@ -41,6 +41,7 @@
5356  #include <linux/slab.h>
5357  #include <linux/highmem.h>
5358  #include <linux/quotaops.h>
5359 +#include <linux/vs_tag.h>
5360
5361  #include <cluster/masklog.h>
5362
5363 @@ -516,6 +517,7 @@ static int __ocfs2_mknod_locked(struct i
5364         struct ocfs2_extent_list *fel;
5365         u16 feat;
5366         struct ocfs2_inode_info *oi = OCFS2_I(inode);
5367 +       ktag_t ktag;
5368
5369         *new_fe_bh = NULL;
5370
5371 @@ -553,8 +555,13 @@ static int __ocfs2_mknod_locked(struct i
5372         fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
5373         fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
5374         fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
5375 -       fe->i_uid = cpu_to_le32(i_uid_read(inode));
5376 -       fe->i_gid = cpu_to_le32(i_gid_read(inode));
5377 +
5378 +       ktag = make_ktag(&init_user_ns, dx_current_fstag(osb->sb));
5379 +       fe->i_uid = cpu_to_le32(from_kuid(&init_user_ns,
5380 +               TAGINO_KUID(DX_TAG(inode), inode->i_uid, ktag)));
5381 +       fe->i_gid = cpu_to_le32(from_kgid(&init_user_ns,
5382 +               TAGINO_KGID(DX_TAG(inode), inode->i_gid, ktag)));
5383 +       inode->i_tag = ktag; /* is this correct? */
5384         fe->i_mode = cpu_to_le16(inode->i_mode);
5385         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
5386                 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
5387 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/ocfs2.h linux-4.9/fs/ocfs2/ocfs2.h
5388 --- linux-4.9/fs/ocfs2/ocfs2.h  2021-02-24 15:47:32.317343277 +0100
5389 +++ linux-4.9/fs/ocfs2/ocfs2.h  2021-02-24 15:47:45.081075908 +0100
5390 @@ -289,6 +289,7 @@ enum ocfs2_mount_options
5391         OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT = 1 << 15,  /* Journal Async Commit */
5392         OCFS2_MOUNT_ERRORS_CONT = 1 << 16, /* Return EIO to the calling process on error */
5393         OCFS2_MOUNT_ERRORS_ROFS = 1 << 17, /* Change filesystem to read-only on error */
5394 +       OCFS2_MOUNT_TAGGED = 1 << 18, /* use tagging */
5395  };
5396
5397  #define OCFS2_OSB_SOFT_RO      0x0001
5398 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/ocfs2_fs.h linux-4.9/fs/ocfs2/ocfs2_fs.h
5399 --- linux-4.9/fs/ocfs2/ocfs2_fs.h       2021-02-24 15:47:32.317343277 +0100
5400 +++ linux-4.9/fs/ocfs2/ocfs2_fs.h       2021-02-24 15:47:45.081075908 +0100
5401 @@ -275,6 +275,11 @@
5402  #define OCFS2_TOPDIR_FL                        FS_TOPDIR_FL    /* Top of directory hierarchies*/
5403  #define OCFS2_RESERVED_FL              FS_RESERVED_FL  /* reserved for ext2 lib */
5404
5405 +#define OCFS2_IXUNLINK_FL              FS_IXUNLINK_FL  /* Immutable invert on unlink */
5406 +
5407 +#define OCFS2_BARRIER_FL               FS_BARRIER_FL   /* Barrier for chroot() */
5408 +#define OCFS2_COW_FL                   FS_COW_FL       /* Copy on Write marker */
5409 +
5410  #define OCFS2_FL_VISIBLE               FS_FL_USER_VISIBLE      /* User visible flags */
5411  #define OCFS2_FL_MODIFIABLE            FS_FL_USER_MODIFIABLE   /* User modifiable flags */
5412
5413 diff -urNp -x '*.orig' linux-4.9/fs/ocfs2/super.c linux-4.9/fs/ocfs2/super.c
5414 --- linux-4.9/fs/ocfs2/super.c  2021-02-24 15:47:32.317343277 +0100
5415 +++ linux-4.9/fs/ocfs2/super.c  2021-02-24 15:47:45.081075908 +0100
5416 @@ -188,6 +188,7 @@ enum {
5417         Opt_dir_resv_level,
5418         Opt_journal_async_commit,
5419         Opt_err_cont,
5420 +       Opt_tag, Opt_notag, Opt_tagid,
5421         Opt_err,
5422  };
5423
5424 @@ -221,6 +222,9 @@ static const match_table_t tokens = {
5425         {Opt_dir_resv_level, "dir_resv_level=%u"},
5426         {Opt_journal_async_commit, "journal_async_commit"},
5427         {Opt_err_cont, "errors=continue"},
5428 +       {Opt_tag, "tag"},
5429 +       {Opt_notag, "notag"},
5430 +       {Opt_tagid, "tagid=%u"},
5431         {Opt_err, NULL}
5432  };
5433
5434 @@ -672,6 +676,13 @@ static int ocfs2_remount(struct super_bl
5435                 goto out;
5436         }
5437
5438 +       if ((osb->s_mount_opt & OCFS2_MOUNT_TAGGED) !=
5439 +           (parsed_options.mount_opt & OCFS2_MOUNT_TAGGED)) {
5440 +               ret = -EINVAL;
5441 +               mlog(ML_ERROR, "Cannot change tagging on remount\n");
5442 +               goto out;
5443 +       }
5444 +
5445         /* We're going to/from readonly mode. */
5446         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
5447                 /* Disable quota accounting before remounting RO */
5448 @@ -1161,6 +1172,9 @@ static int ocfs2_fill_super(struct super
5449
5450         ocfs2_complete_mount_recovery(osb);
5451
5452 +       if (osb->s_mount_opt & OCFS2_MOUNT_TAGGED)
5453 +               sb->s_flags |= MS_TAGGED;
5454 +
5455         if (ocfs2_mount_local(osb))
5456                 snprintf(nodestr, sizeof(nodestr), "local");
5457         else
5458 @@ -1480,6 +1494,20 @@ static int ocfs2_parse_options(struct su
5459                 case Opt_journal_async_commit:
5460                         mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
5461                         break;
5462 +#ifndef CONFIG_TAGGING_NONE
5463 +               case Opt_tag:
5464 +                       mopt->mount_opt |= OCFS2_MOUNT_TAGGED;
5465 +                       break;
5466 +               case Opt_notag:
5467 +                       mopt->mount_opt &= ~OCFS2_MOUNT_TAGGED;
5468 +                       break;
5469 +#endif
5470 +#ifdef CONFIG_PROPAGATE
5471 +               case Opt_tagid:
5472 +                       /* use args[0] */
5473 +                       mopt->mount_opt |= OCFS2_MOUNT_TAGGED;
5474 +                       break;
5475 +#endif
5476                 default:
5477                         mlog(ML_ERROR,
5478                              "Unrecognized mount option \"%s\" "
5479 diff -urNp -x '*.orig' linux-4.9/fs/open.c linux-4.9/fs/open.c
5480 --- linux-4.9/fs/open.c 2021-02-24 15:47:32.320676715 +0100
5481 +++ linux-4.9/fs/open.c 2021-02-24 15:47:45.081075908 +0100
5482 @@ -31,6 +31,11 @@
5483  #include <linux/ima.h>
5484  #include <linux/dnotify.h>
5485  #include <linux/compat.h>
5486 +#include <linux/vs_base.h>
5487 +#include <linux/vs_limit.h>
5488 +#include <linux/vs_tag.h>
5489 +#include <linux/vs_cowbl.h>
5490 +#include <linux/vserver/dlimit.h>
5491
5492  #include "internal.h"
5493
5494 @@ -65,12 +70,17 @@ int do_truncate(struct dentry *dentry, l
5495         return ret;
5496  }
5497
5498 -long vfs_truncate(const struct path *path, loff_t length)
5499 +long vfs_truncate(struct path *path, loff_t length)
5500  {
5501         struct inode *inode;
5502         struct dentry *upperdentry;
5503         long error;
5504
5505 +#ifdef CONFIG_VSERVER_COWBL
5506 +       error = cow_check_and_break(path);
5507 +       if (error)
5508 +               goto out;
5509 +#endif
5510         inode = path->dentry->d_inode;
5511
5512         /* For directories it's -EISDIR, for other non-regulars - -EINVAL */
5513 @@ -584,6 +594,13 @@ SYSCALL_DEFINE3(fchmodat, int, dfd, cons
5514         unsigned int lookup_flags = LOOKUP_FOLLOW;
5515  retry:
5516         error = user_path_at(dfd, filename, lookup_flags, &path);
5517 +#ifdef CONFIG_VSERVER_COWBL
5518 +       if (!error) {
5519 +               error = cow_check_and_break(&path);
5520 +               if (error)
5521 +                       path_put(&path);
5522 +       }
5523 +#endif
5524         if (!error) {
5525                 error = chmod_common(&path, mode);
5526                 path_put(&path);
5527 @@ -618,13 +635,15 @@ retry_deleg:
5528                 if (!uid_valid(uid))
5529                         return -EINVAL;
5530                 newattrs.ia_valid |= ATTR_UID;
5531 -               newattrs.ia_uid = uid;
5532 +               newattrs.ia_uid = make_kuid(&init_user_ns,
5533 +                       dx_map_uid(user));
5534         }
5535         if (group != (gid_t) -1) {
5536                 if (!gid_valid(gid))
5537                         return -EINVAL;
5538                 newattrs.ia_valid |= ATTR_GID;
5539 -               newattrs.ia_gid = gid;
5540 +               newattrs.ia_gid = make_kgid(&init_user_ns,
5541 +                       dx_map_gid(group));
5542         }
5543         if (!S_ISDIR(inode->i_mode))
5544                 newattrs.ia_valid |=
5545 @@ -662,6 +681,10 @@ retry:
5546         error = mnt_want_write(path.mnt);
5547         if (error)
5548                 goto out_release;
5549 +#ifdef CONFIG_VSERVER_COWBL
5550 +       error = cow_check_and_break(&path);
5551 +       if (!error)
5552 +#endif
5553         error = chown_common(&path, user, group);
5554         mnt_drop_write(path.mnt);
5555  out_release:
5556 diff -urNp -x '*.orig' linux-4.9/fs/proc/array.c linux-4.9/fs/proc/array.c
5557 --- linux-4.9/fs/proc/array.c   2021-02-24 15:47:32.324010153 +0100
5558 +++ linux-4.9/fs/proc/array.c   2021-02-24 15:47:45.081075908 +0100
5559 @@ -86,6 +86,8 @@
5560  #include <linux/string_helpers.h>
5561  #include <linux/user_namespace.h>
5562  #include <linux/fs_struct.h>
5563 +#include <linux/vs_context.h>
5564 +#include <linux/vs_network.h>
5565
5566  #include <asm/pgtable.h>
5567  #include <asm/processor.h>
5568 @@ -170,6 +172,9 @@ static inline void task_state(struct seq
5569         ppid = pid_alive(p) ?
5570                 task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
5571
5572 +       if (unlikely(vx_current_initpid(p->pid)))
5573 +               ppid = 0;
5574 +
5575         tracer = ptrace_parent(p);
5576         if (tracer)
5577                 tpid = task_pid_nr_ns(tracer, ns);
5578 @@ -307,8 +312,8 @@ static inline void task_sig(struct seq_f
5579         render_sigset_t(m, "SigCgt:\t", &caught);
5580  }
5581
5582 -static void render_cap_t(struct seq_file *m, const char *header,
5583 -                       kernel_cap_t *a)
5584 +void render_cap_t(struct seq_file *m, const char *header,
5585 +                       struct vx_info *vxi, kernel_cap_t *a)
5586  {
5587         unsigned __capi;
5588
5589 @@ -335,11 +340,12 @@ static inline void task_cap(struct seq_f
5590         cap_ambient     = cred->cap_ambient;
5591         rcu_read_unlock();
5592
5593 -       render_cap_t(m, "CapInh:\t", &cap_inheritable);
5594 -       render_cap_t(m, "CapPrm:\t", &cap_permitted);
5595 -       render_cap_t(m, "CapEff:\t", &cap_effective);
5596 -       render_cap_t(m, "CapBnd:\t", &cap_bset);
5597 -       render_cap_t(m, "CapAmb:\t", &cap_ambient);
5598 +       /* FIXME: maybe move the p->vx_info masking to __task_cred() ? */
5599 +       render_cap_t(m, "CapInh:\t", p->vx_info, &cap_inheritable);
5600 +       render_cap_t(m, "CapPrm:\t", p->vx_info, &cap_permitted);
5601 +       render_cap_t(m, "CapEff:\t", p->vx_info, &cap_effective);
5602 +       render_cap_t(m, "CapBnd:\t", p->vx_info, &cap_bset);
5603 +       render_cap_t(m, "CapAmb:\t", p->vx_info, &cap_ambient);
5604  }
5605
5606  static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
5607 @@ -391,6 +397,43 @@ static void task_cpus_allowed(struct seq
5608                    cpumask_pr_args(&task->cpus_allowed));
5609  }
5610
5611 +int proc_pid_nsproxy(struct seq_file *m, struct pid_namespace *ns,
5612 +                       struct pid *pid, struct task_struct *task)
5613 +{
5614 +       seq_printf(m,   "Proxy:\t%p(%c)\n"
5615 +                       "Count:\t%u\n"
5616 +                       "uts:\t%p(%c)\n"
5617 +                       "ipc:\t%p(%c)\n"
5618 +                       "mnt:\t%p(%c)\n"
5619 +                       "pid:\t%p(%c)\n"
5620 +                       "net:\t%p(%c)\n",
5621 +                       task->nsproxy,
5622 +                       (task->nsproxy == init_task.nsproxy ? 'I' : '-'),
5623 +                       atomic_read(&task->nsproxy->count),
5624 +                       task->nsproxy->uts_ns,
5625 +                       (task->nsproxy->uts_ns == init_task.nsproxy->uts_ns ? 'I' : '-'),
5626 +                       task->nsproxy->ipc_ns,
5627 +                       (task->nsproxy->ipc_ns == init_task.nsproxy->ipc_ns ? 'I' : '-'),
5628 +                       task->nsproxy->mnt_ns,
5629 +                       (task->nsproxy->mnt_ns == init_task.nsproxy->mnt_ns ? 'I' : '-'),
5630 +                       task->nsproxy->pid_ns_for_children,
5631 +                       (task->nsproxy->pid_ns_for_children ==
5632 +                               init_task.nsproxy->pid_ns_for_children ? 'I' : '-'),
5633 +                       task->nsproxy->net_ns,
5634 +                       (task->nsproxy->net_ns == init_task.nsproxy->net_ns ? 'I' : '-'));
5635 +       return 0;
5636 +}
5637 +
5638 +void task_vs_id(struct seq_file *m, struct task_struct *task)
5639 +{
5640 +       if (task_vx_flags(task, VXF_HIDE_VINFO, 0))
5641 +               return;
5642 +
5643 +       seq_printf(m, "VxID:\t%d\n", vx_task_xid(task));
5644 +       seq_printf(m, "NxID:\t%d\n", nx_task_nid(task));
5645 +}
5646 +
5647 +
5648  int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
5649                         struct pid *pid, struct task_struct *task)
5650  {
5651 @@ -408,6 +451,7 @@ int proc_pid_status(struct seq_file *m,
5652         task_seccomp(m, task);
5653         task_cpus_allowed(m, task);
5654         cpuset_task_status_allowed(m, task);
5655 +       task_vs_id(m, task);
5656         task_context_switch_counts(m, task);
5657         return 0;
5658  }
5659 @@ -523,6 +567,17 @@ static int do_task_stat(struct seq_file
5660         /* convert nsec -> ticks */
5661         start_time = nsec_to_clock_t(task->real_start_time);
5662
5663 +       /* fixup start time for virt uptime */
5664 +       if (vx_flags(VXF_VIRT_UPTIME, 0)) {
5665 +               unsigned long long bias =
5666 +                       current->vx_info->cvirt.bias_clock;
5667 +
5668 +               if (start_time > bias)
5669 +                       start_time -= bias;
5670 +               else
5671 +                       start_time = 0;
5672 +       }
5673 +
5674         seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
5675         seq_put_decimal_ll(m, " ", ppid);
5676         seq_put_decimal_ll(m, " ", pgid);
5677 diff -urNp -x '*.orig' linux-4.9/fs/proc/base.c linux-4.9/fs/proc/base.c
5678 --- linux-4.9/fs/proc/base.c    2021-02-24 15:47:32.324010153 +0100
5679 +++ linux-4.9/fs/proc/base.c    2021-02-24 15:47:45.081075908 +0100
5680 @@ -87,6 +87,8 @@
5681  #include <linux/slab.h>
5682  #include <linux/flex_array.h>
5683  #include <linux/posix-timers.h>
5684 +#include <linux/vs_context.h>
5685 +#include <linux/vs_network.h>
5686  #ifdef CONFIG_HARDWALL
5687  #include <asm/hardwall.h>
5688  #endif
5689 @@ -1079,10 +1081,15 @@ static int __set_oom_adj(struct file *fi
5690         mutex_lock(&oom_adj_mutex);
5691         if (legacy) {
5692                 if (oom_adj < task->signal->oom_score_adj &&
5693 -                               !capable(CAP_SYS_RESOURCE)) {
5694 +                   !vx_capable(CAP_SYS_RESOURCE, VXC_OOM_ADJUST)) {
5695                         err = -EACCES;
5696                         goto err_unlock;
5697                 }
5698 +
5699 +               /* prevent guest processes from circumventing the oom killer */
5700 +               if (vx_current_xid() && (oom_adj == OOM_DISABLE))
5701 +                       oom_adj = OOM_ADJUST_MIN;
5702 +
5703                 /*
5704                  * /proc/pid/oom_adj is provided for legacy purposes, ask users to use
5705                  * /proc/pid/oom_score_adj instead.
5706 @@ -1708,6 +1715,8 @@ struct inode *proc_pid_make_inode(struct
5707                 inode->i_gid = cred->egid;
5708                 rcu_read_unlock();
5709         }
5710 +       /* procfs is xid tagged */
5711 +       i_tag_write(inode, (vtag_t)vx_task_xid(task));
5712         security_task_to_inode(task, inode);
5713
5714  out:
5715 @@ -1753,6 +1762,8 @@ int pid_getattr(struct vfsmount *mnt, st
5716
5717  /* dentry stuff */
5718
5719 +// static unsigned name_to_int(struct dentry *dentry);
5720 +
5721  /*
5722   *     Exceptional case: normally we are not allowed to unhash a busy
5723   * directory. In this case, however, we can do it - no aliasing problems
5724 @@ -1781,6 +1792,19 @@ int pid_revalidate(struct dentry *dentry
5725         task = get_proc_task(inode);
5726
5727         if (task) {
5728 +               unsigned pid = name_to_int(&dentry->d_name);
5729 +
5730 +               if (pid != ~0U && pid != vx_map_pid(task->pid) &&
5731 +                       pid != __task_pid_nr_ns(task, PIDTYPE_PID,
5732 +                               task_active_pid_ns(task))) {
5733 +                       vxdprintk(VXD_CBIT(misc, 10),
5734 +                               VS_Q("%*s") " dropped by pid_revalidate(%d!=%d)",
5735 +                               dentry->d_name.len, dentry->d_name.name,
5736 +                               pid, vx_map_pid(task->pid));
5737 +                       put_task_struct(task);
5738 +                       d_drop(dentry);
5739 +                       return 0;
5740 +               }
5741                 if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
5742                     task_dumpable(task)) {
5743                         rcu_read_lock();
5744 @@ -2445,6 +2469,13 @@ static struct dentry *proc_pident_lookup
5745         if (!task)
5746                 goto out_no_task;
5747
5748 +       /* TODO: maybe we can come up with a generic approach? */
5749 +       if (task_vx_flags(task, VXF_HIDE_VINFO, 0) &&
5750 +               (dentry->d_name.len == 5) &&
5751 +               (!memcmp(dentry->d_name.name, "vinfo", 5) ||
5752 +               !memcmp(dentry->d_name.name, "ninfo", 5)))
5753 +               goto out;
5754 +
5755         /*
5756          * Yes, it does not scale. And it should not. Don't add
5757          * new entries into /proc/<tgid>/ without very good reasons.
5758 @@ -2884,6 +2915,11 @@ static int proc_pid_personality(struct s
5759  static const struct file_operations proc_task_operations;
5760  static const struct inode_operations proc_task_inode_operations;
5761
5762 +extern int proc_pid_vx_info(struct seq_file *,
5763 +       struct pid_namespace *, struct pid *, struct task_struct *);
5764 +extern int proc_pid_nx_info(struct seq_file *,
5765 +       struct pid_namespace *, struct pid *, struct task_struct *);
5766 +
5767  static const struct pid_entry tgid_base_stuff[] = {
5768         DIR("task",       S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
5769         DIR("fd",         S_IRUSR|S_IXUSR, proc_fd_inode_operations, proc_fd_operations),
5770 @@ -2948,6 +2984,8 @@ static const struct pid_entry tgid_base_
5771  #ifdef CONFIG_CGROUPS
5772         ONE("cgroup",  S_IRUGO, proc_cgroup_show),
5773  #endif
5774 +       ONE("vinfo",      S_IRUGO, proc_pid_vx_info),
5775 +       ONE("ninfo",      S_IRUGO, proc_pid_nx_info),
5776         ONE("oom_score",  S_IRUGO, proc_oom_score),
5777         REG("oom_adj",    S_IRUGO|S_IWUSR, proc_oom_adj_operations),
5778         REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
5779 @@ -3163,7 +3201,7 @@ retry:
5780         iter.task = NULL;
5781         pid = find_ge_pid(iter.tgid, ns);
5782         if (pid) {
5783 -               iter.tgid = pid_nr_ns(pid, ns);
5784 +               iter.tgid = pid_unmapped_nr_ns(pid, ns);
5785                 iter.task = pid_task(pid, PIDTYPE_PID);
5786                 /* What we to know is if the pid we have find is the
5787                  * pid of a thread_group_leader.  Testing for task
5788 @@ -3223,8 +3261,10 @@ int proc_pid_readdir(struct file *file,
5789                 if (!has_pid_permissions(ns, iter.task, 2))
5790                         continue;
5791
5792 -               len = snprintf(name, sizeof(name), "%d", iter.tgid);
5793 +               len = snprintf(name, sizeof(name), "%d", vx_map_tgid(iter.tgid));
5794                 ctx->pos = iter.tgid + TGID_OFFSET;
5795 +               if (!vx_proc_task_visible(iter.task))
5796 +                       continue;
5797                 if (!proc_fill_cache(file, ctx, name, len,
5798                                      proc_pid_instantiate, iter.task, NULL)) {
5799                         put_task_struct(iter.task);
5800 @@ -3361,6 +3401,7 @@ static const struct pid_entry tid_base_s
5801         REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations),
5802         REG("setgroups",  S_IRUGO|S_IWUSR, proc_setgroups_operations),
5803  #endif
5804 +       ONE("nsproxy",  S_IRUGO, proc_pid_nsproxy),
5805  };
5806
5807  static int proc_tid_base_readdir(struct file *file, struct dir_context *ctx)
5808 @@ -3427,6 +3468,8 @@ static struct dentry *proc_task_lookup(s
5809         tid = name_to_int(&dentry->d_name);
5810         if (tid == ~0U)
5811                 goto out;
5812 +       if (vx_current_initpid(tid))
5813 +               goto out;
5814
5815         ns = dentry->d_sb->s_fs_info;
5816         rcu_read_lock();
5817 diff -urNp -x '*.orig' linux-4.9/fs/proc/generic.c linux-4.9/fs/proc/generic.c
5818 --- linux-4.9/fs/proc/generic.c 2021-02-24 15:47:32.324010153 +0100
5819 +++ linux-4.9/fs/proc/generic.c 2021-02-24 15:47:45.081075908 +0100
5820 @@ -22,6 +22,7 @@
5821  #include <linux/bitops.h>
5822  #include <linux/spinlock.h>
5823  #include <linux/completion.h>
5824 +#include <linux/vserver/inode.h>
5825  #include <asm/uaccess.h>
5826
5827  #include "internal.h"
5828 @@ -66,8 +67,16 @@ static struct proc_dir_entry *pde_subdir
5829                         node = node->rb_left;
5830                 else if (result > 0)
5831                         node = node->rb_right;
5832 -               else
5833 +               else {
5834 +                       if (!vx_hide_check(0, de->vx_flags)) {
5835 +                               vxdprintk(VXD_CBIT(misc, 9),
5836 +                                       VS_Q("%*s")
5837 +                                       " hidden in pde_subdir_find()",
5838 +                                       de->namelen, de->name);
5839 +                               return 0;
5840 +                       }
5841                         return de;
5842 +               }
5843         }
5844         return NULL;
5845  }
5846 @@ -241,6 +250,8 @@ struct dentry *proc_lookup_de(struct pro
5847                         return ERR_PTR(-ENOMEM);
5848                 d_set_d_op(dentry, &simple_dentry_operations);
5849                 d_add(dentry, inode);
5850 +                       /* generic proc entries belong to the host */
5851 +                       i_tag_write(inode, 0);
5852                 return NULL;
5853         }
5854         read_unlock(&proc_subdir_lock);
5855 @@ -287,6 +298,12 @@ int proc_readdir_de(struct proc_dir_entr
5856         do {
5857                 struct proc_dir_entry *next;
5858                 pde_get(de);
5859 +               if (!vx_hide_check(0, de->vx_flags)) {
5860 +                       vxdprintk(VXD_CBIT(misc, 9),
5861 +                               VS_Q("%*s") " hidden in proc_readdir_de()",
5862 +                               de->namelen, de->name);
5863 +                       goto skip;
5864 +               }
5865                 read_unlock(&proc_subdir_lock);
5866                 if (!dir_emit(ctx, de->name, de->namelen,
5867                             de->low_ino, de->mode >> 12)) {
5868 @@ -294,6 +311,7 @@ int proc_readdir_de(struct proc_dir_entr
5869                         return 0;
5870                 }
5871                 read_lock(&proc_subdir_lock);
5872 +       skip:
5873                 ctx->pos++;
5874                 next = pde_subdir_next(de);
5875                 pde_put(de);
5876 @@ -387,6 +405,7 @@ static struct proc_dir_entry *__proc_cre
5877         ent->mode = mode;
5878         ent->nlink = nlink;
5879         ent->subdir = RB_ROOT;
5880 +       ent->vx_flags = IATTR_PROC_DEFAULT;
5881         atomic_set(&ent->count, 1);
5882         spin_lock_init(&ent->pde_unload_lock);
5883         INIT_LIST_HEAD(&ent->pde_openers);
5884 @@ -413,7 +432,8 @@ struct proc_dir_entry *proc_symlink(cons
5885                                 kfree(ent->data);
5886                                 kfree(ent);
5887                                 ent = NULL;
5888 -                       }
5889 +                       } else
5890 +                               ent->vx_flags = IATTR_PROC_SYMLINK;
5891                 } else {
5892                         kfree(ent);
5893                         ent = NULL;
5894 diff -urNp -x '*.orig' linux-4.9/fs/proc/inode.c linux-4.9/fs/proc/inode.c
5895 --- linux-4.9/fs/proc/inode.c   2021-02-24 15:47:32.324010153 +0100
5896 +++ linux-4.9/fs/proc/inode.c   2021-02-24 15:47:45.081075908 +0100
5897 @@ -433,6 +433,8 @@ struct inode *proc_get_inode(struct supe
5898                         inode->i_uid = de->uid;
5899                         inode->i_gid = de->gid;
5900                 }
5901 +               if (de->vx_flags)
5902 +                       PROC_I(inode)->vx_flags = de->vx_flags;
5903                 if (de->size)
5904                         inode->i_size = de->size;
5905                 if (de->nlink)
5906 diff -urNp -x '*.orig' linux-4.9/fs/proc/internal.h linux-4.9/fs/proc/internal.h
5907 --- linux-4.9/fs/proc/internal.h        2021-02-24 15:47:32.324010153 +0100
5908 +++ linux-4.9/fs/proc/internal.h        2021-02-24 15:47:45.084409345 +0100
5909 @@ -14,6 +14,7 @@
5910  #include <linux/spinlock.h>
5911  #include <linux/atomic.h>
5912  #include <linux/binfmts.h>
5913 +#include <linux/vs_pid.h>
5914
5915  struct ctl_table_header;
5916  struct mempolicy;
5917 @@ -34,6 +35,7 @@ struct proc_dir_entry {
5918         nlink_t nlink;
5919         kuid_t uid;
5920         kgid_t gid;
5921 +       int vx_flags;
5922         loff_t size;
5923         const struct inode_operations *proc_iops;
5924         const struct file_operations *proc_fops;
5925 @@ -51,15 +53,22 @@ struct proc_dir_entry {
5926         char name[];
5927  };
5928
5929 +struct vx_info;
5930 +struct nx_info;
5931 +
5932  union proc_op {
5933         int (*proc_get_link)(struct dentry *, struct path *);
5934         int (*proc_show)(struct seq_file *m,
5935                 struct pid_namespace *ns, struct pid *pid,
5936                 struct task_struct *task);
5937 +       int (*proc_vs_read)(char *page);
5938 +       int (*proc_vxi_read)(struct vx_info *vxi, char *page);
5939 +       int (*proc_nxi_read)(struct nx_info *nxi, char *page);
5940  };
5941
5942  struct proc_inode {
5943         struct pid *pid;
5944 +       int vx_flags;
5945         unsigned int fd;
5946         union proc_op op;
5947         struct proc_dir_entry *pde;
5948 @@ -93,11 +102,16 @@ static inline struct pid *proc_pid(struc
5949         return PROC_I(inode)->pid;
5950  }
5951
5952 -static inline struct task_struct *get_proc_task(struct inode *inode)
5953 +static inline struct task_struct *get_proc_task_real(struct inode *inode)
5954  {
5955         return get_pid_task(proc_pid(inode), PIDTYPE_PID);
5956  }
5957
5958 +static inline struct task_struct *get_proc_task(struct inode *inode)
5959 +{
5960 +       return vx_get_proc_task(inode, proc_pid(inode));
5961 +}
5962 +
5963  static inline int task_dumpable(struct task_struct *task)
5964  {
5965         int dumpable = 0;
5966 @@ -156,6 +170,8 @@ extern int proc_pid_status(struct seq_fi
5967                            struct pid *, struct task_struct *);
5968  extern int proc_pid_statm(struct seq_file *, struct pid_namespace *,
5969                           struct pid *, struct task_struct *);
5970 +extern int proc_pid_nsproxy(struct seq_file *m, struct pid_namespace *ns,
5971 +                           struct pid *pid, struct task_struct *task);
5972
5973  /*
5974   * base.c
5975 diff -urNp -x '*.orig' linux-4.9/fs/proc/loadavg.c linux-4.9/fs/proc/loadavg.c
5976 --- linux-4.9/fs/proc/loadavg.c 2016-12-11 20:17:54.000000000 +0100
5977 +++ linux-4.9/fs/proc/loadavg.c 2021-02-24 15:47:45.084409345 +0100
5978 @@ -12,15 +12,27 @@
5979
5980  static int loadavg_proc_show(struct seq_file *m, void *v)
5981  {
5982 +       unsigned long running;
5983 +       unsigned int threads;
5984         unsigned long avnrun[3];
5985
5986         get_avenrun(avnrun, FIXED_1/200, 0);
5987
5988 +       if (vx_flags(VXF_VIRT_LOAD, 0)) {
5989 +               struct vx_info *vxi = current_vx_info();
5990 +
5991 +               running = atomic_read(&vxi->cvirt.nr_running);
5992 +               threads = atomic_read(&vxi->cvirt.nr_threads);
5993 +       } else {
5994 +               running = nr_running();
5995 +               threads = nr_threads;
5996 +       }
5997 +
5998         seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d\n",
5999                 LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
6000                 LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
6001                 LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),
6002 -               nr_running(), nr_threads,
6003 +               running, threads,
6004                 task_active_pid_ns(current)->last_pid);
6005         return 0;
6006  }
6007 diff -urNp -x '*.orig' linux-4.9/fs/proc/meminfo.c linux-4.9/fs/proc/meminfo.c
6008 --- linux-4.9/fs/proc/meminfo.c 2016-12-11 20:17:54.000000000 +0100
6009 +++ linux-4.9/fs/proc/meminfo.c 2021-02-24 15:47:45.084409345 +0100
6010 @@ -55,7 +55,8 @@ static int meminfo_proc_show(struct seq_
6011         si_swapinfo(&i);
6012         committed = percpu_counter_read_positive(&vm_committed_as);
6013
6014 -       cached = global_node_page_state(NR_FILE_PAGES) -
6015 +       cached = vx_flags(VXF_VIRT_MEM, 0) ?
6016 +               vx_vsi_cached(&i) : global_node_page_state(NR_FILE_PAGES) -
6017                         total_swapcache_pages() - i.bufferram;
6018         if (cached < 0)
6019                 cached = 0;
6020 diff -urNp -x '*.orig' linux-4.9/fs/proc/root.c linux-4.9/fs/proc/root.c
6021 --- linux-4.9/fs/proc/root.c    2016-12-11 20:17:54.000000000 +0100
6022 +++ linux-4.9/fs/proc/root.c    2021-02-24 15:47:45.084409345 +0100
6023 @@ -20,9 +20,14 @@
6024  #include <linux/mount.h>
6025  #include <linux/pid_namespace.h>
6026  #include <linux/parser.h>
6027 +#include <linux/vserver/inode.h>
6028
6029  #include "internal.h"
6030
6031 +struct proc_dir_entry *proc_virtual;
6032 +
6033 +extern void proc_vx_init(void);
6034 +
6035  enum {
6036         Opt_gid, Opt_hidepid, Opt_err,
6037  };
6038 @@ -145,6 +150,7 @@ void __init proc_root_init(void)
6039         proc_tty_init();
6040         proc_mkdir("bus", NULL);
6041         proc_sys_init();
6042 +       proc_vx_init();
6043  }
6044
6045  static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat
6046 @@ -206,6 +212,7 @@ struct proc_dir_entry proc_root = {
6047         .proc_iops      = &proc_root_inode_operations,
6048         .proc_fops      = &proc_root_operations,
6049         .parent         = &proc_root,
6050 +       .vx_flags       = IATTR_ADMIN | IATTR_WATCH,
6051         .subdir         = RB_ROOT,
6052         .name           = "/proc",
6053  };
6054 diff -urNp -x '*.orig' linux-4.9/fs/proc/self.c linux-4.9/fs/proc/self.c
6055 --- linux-4.9/fs/proc/self.c    2021-02-24 15:47:32.324010153 +0100
6056 +++ linux-4.9/fs/proc/self.c    2021-02-24 15:47:45.084409345 +0100
6057 @@ -1,6 +1,7 @@
6058  #include <linux/sched.h>
6059  #include <linux/slab.h>
6060  #include <linux/pid_namespace.h>
6061 +#include <linux/vserver/inode.h>
6062  #include "internal.h"
6063
6064  /*
6065 @@ -61,6 +62,8 @@ int proc_setup_self(struct super_block *
6066         self = d_alloc_name(s->s_root, "self");
6067         if (self) {
6068                 struct inode *inode = new_inode(s);
6069 +
6070 +               // self->vx_flags = IATTR_PROC_SYMLINK;
6071                 if (inode) {
6072                         inode->i_ino = self_inum;
6073                         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
6074 diff -urNp -x '*.orig' linux-4.9/fs/proc/stat.c linux-4.9/fs/proc/stat.c
6075 --- linux-4.9/fs/proc/stat.c    2021-02-24 15:47:32.324010153 +0100
6076 +++ linux-4.9/fs/proc/stat.c    2021-02-24 15:47:45.084409345 +0100
6077 @@ -9,8 +9,10 @@
6078  #include <linux/slab.h>
6079  #include <linux/time.h>
6080  #include <linux/irqnr.h>
6081 +#include <linux/vserver/cvirt.h>
6082  #include <linux/cputime.h>
6083  #include <linux/tick.h>
6084 +#include <linux/cpuset.h>
6085
6086  #ifndef arch_irq_stat_cpu
6087  #define arch_irq_stat_cpu(cpu) 0
6088 @@ -86,13 +88,21 @@ static int show_stat(struct seq_file *p,
6089         u64 sum_softirq = 0;
6090         unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
6091         struct timespec64 boottime;
6092 +       cpumask_var_t cpus_allowed;
6093 +       bool virt_cpu = vx_flags(VXF_VIRT_CPU, 0);
6094
6095         user = nice = system = idle = iowait =
6096                 irq = softirq = steal = 0;
6097         guest = guest_nice = 0;
6098         getboottime64(&boottime);
6099
6100 +       if (virt_cpu)
6101 +               cpuset_cpus_allowed(current, cpus_allowed);
6102 +
6103         for_each_possible_cpu(i) {
6104 +               if (virt_cpu && !cpumask_test_cpu(i, cpus_allowed))
6105 +                       continue;
6106 +
6107                 user += kcpustat_cpu(i).cpustat[CPUTIME_USER];
6108                 nice += kcpustat_cpu(i).cpustat[CPUTIME_NICE];
6109                 system += kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
6110 @@ -128,6 +138,9 @@ static int show_stat(struct seq_file *p,
6111         seq_putc(p, '\n');
6112
6113         for_each_online_cpu(i) {
6114 +               if (virt_cpu && !cpumask_test_cpu(i, cpus_allowed))
6115 +                       continue;
6116 +
6117                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
6118                 user = kcpustat_cpu(i).cpustat[CPUTIME_USER];
6119                 nice = kcpustat_cpu(i).cpustat[CPUTIME_NICE];
6120 diff -urNp -x '*.orig' linux-4.9/fs/proc/uptime.c linux-4.9/fs/proc/uptime.c
6121 --- linux-4.9/fs/proc/uptime.c  2021-02-24 15:47:32.327343590 +0100
6122 +++ linux-4.9/fs/proc/uptime.c  2021-02-24 15:47:45.084409345 +0100
6123 @@ -5,6 +5,7 @@
6124  #include <linux/seq_file.h>
6125  #include <linux/time.h>
6126  #include <linux/kernel_stat.h>
6127 +#include <linux/vserver/cvirt.h>
6128
6129  static int uptime_proc_show(struct seq_file *m, void *v)
6130  {
6131 @@ -21,6 +22,7 @@ static int uptime_proc_show(struct seq_f
6132         get_monotonic_boottime(&uptime);
6133         idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
6134         idle.tv_nsec = rem;
6135 +
6136         seq_printf(m, "%lu.%02lu %lu.%02lu\n",
6137                         (unsigned long) uptime.tv_sec,
6138                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
6139 diff -urNp -x '*.orig' linux-4.9/fs/proc_namespace.c linux-4.9/fs/proc_namespace.c
6140 --- linux-4.9/fs/proc_namespace.c       2016-12-11 20:17:54.000000000 +0100
6141 +++ linux-4.9/fs/proc_namespace.c       2021-02-24 15:47:45.084409345 +0100
6142 @@ -46,6 +46,8 @@ static int show_sb_opts(struct seq_file
6143                 { MS_DIRSYNC, ",dirsync" },
6144                 { MS_MANDLOCK, ",mand" },
6145                 { MS_LAZYTIME, ",lazytime" },
6146 +               { MS_TAGGED, ",tag" },
6147 +               { MS_NOTAGCHECK, ",notagcheck" },
6148                 { 0, NULL }
6149         };
6150         const struct proc_fs_info *fs_infop;
6151 @@ -82,6 +84,38 @@ static inline void mangle(struct seq_fil
6152         seq_escape(m, s, " \t\n\\");
6153  }
6154
6155 +#ifdef CONFIG_VSERVER_EXTRA_MNT_CHECK
6156 +
6157 +static int mnt_is_reachable(struct vfsmount *vfsmnt)
6158 +{
6159 +       struct path root;
6160 +       struct dentry *point;
6161 +       struct mount *mnt = real_mount(vfsmnt);
6162 +       struct mount *root_mnt;
6163 +       int ret;
6164 +
6165 +       if (mnt == mnt->mnt_ns->root)
6166 +               return 1;
6167 +
6168 +       rcu_read_lock();
6169 +       root = current->fs->root;
6170 +       root_mnt = real_mount(root.mnt);
6171 +       point = root.dentry;
6172 +
6173 +       while ((mnt != mnt->mnt_parent) && (mnt != root_mnt)) {
6174 +               point = mnt->mnt_mountpoint;
6175 +               mnt = mnt->mnt_parent;
6176 +       }
6177 +       rcu_read_unlock();
6178 +
6179 +       ret = (mnt == root_mnt) && is_subdir(point, root.dentry);
6180 +       return ret;
6181 +}
6182 +
6183 +#else
6184 +#define        mnt_is_reachable(v)     (1)
6185 +#endif
6186 +
6187  static void show_type(struct seq_file *m, struct super_block *sb)
6188  {
6189         mangle(m, sb->s_type->name);
6190 @@ -99,6 +133,17 @@ static int show_vfsmnt(struct seq_file *
6191         struct super_block *sb = mnt_path.dentry->d_sb;
6192         int err;
6193
6194 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6195 +               return SEQ_SKIP;
6196 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6197 +               return SEQ_SKIP;
6198 +
6199 +       if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
6200 +               mnt == current->fs->root.mnt) {
6201 +               seq_puts(m, "/dev/root / ");
6202 +               goto type;
6203 +       }
6204 +
6205         if (sb->s_op->show_devname) {
6206                 err = sb->s_op->show_devname(m, mnt_path.dentry);
6207                 if (err)
6208 @@ -112,6 +157,7 @@ static int show_vfsmnt(struct seq_file *
6209         if (err)
6210                 goto out;
6211         seq_putc(m, ' ');
6212 +type:
6213         show_type(m, sb);
6214         seq_puts(m, __mnt_is_readonly(mnt) ? " ro" : " rw");
6215         err = show_sb_opts(m, sb);
6216 @@ -133,6 +179,11 @@ static int show_mountinfo(struct seq_fil
6217         struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
6218         int err;
6219
6220 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6221 +               return SEQ_SKIP;
6222 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6223 +               return SEQ_SKIP;
6224 +
6225         seq_printf(m, "%i %i %u:%u ", r->mnt_id, r->mnt_parent->mnt_id,
6226                    MAJOR(sb->s_dev), MINOR(sb->s_dev));
6227         if (sb->s_op->show_path) {
6228 @@ -195,6 +246,17 @@ static int show_vfsstat(struct seq_file
6229         struct super_block *sb = mnt_path.dentry->d_sb;
6230         int err;
6231
6232 +       if (vx_flags(VXF_HIDE_MOUNT, 0))
6233 +               return SEQ_SKIP;
6234 +       if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
6235 +               return SEQ_SKIP;
6236 +
6237 +       if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
6238 +               mnt == current->fs->root.mnt) {
6239 +               seq_puts(m, "device /dev/root mounted on / ");
6240 +               goto type;
6241 +       }
6242 +
6243         /* device */
6244         if (sb->s_op->show_devname) {
6245                 seq_puts(m, "device ");
6246 @@ -216,7 +278,7 @@ static int show_vfsstat(struct seq_file
6247         if (err)
6248                 goto out;
6249         seq_putc(m, ' ');
6250 -
6251 +type:
6252         /* file system type */
6253         seq_puts(m, "with fstype ");
6254         show_type(m, sb);
6255 diff -urNp -x '*.orig' linux-4.9/fs/quota/dquot.c linux-4.9/fs/quota/dquot.c
6256 --- linux-4.9/fs/quota/dquot.c  2021-02-24 15:47:32.327343590 +0100
6257 +++ linux-4.9/fs/quota/dquot.c  2021-02-24 15:47:45.084409345 +0100
6258 @@ -1659,6 +1659,9 @@ int __dquot_alloc_space(struct inode *in
6259         int reserve = flags & DQUOT_SPACE_RESERVE;
6260         struct dquot **dquots;
6261
6262 +       if ((ret = dl_alloc_space(inode, number)))
6263 +               return ret;
6264 +
6265         if (!dquot_active(inode)) {
6266                 inode_incr_space(inode, number, reserve);
6267                 goto out;
6268 @@ -1711,6 +1714,9 @@ int dquot_alloc_inode(struct inode *inod
6269         struct dquot_warn warn[MAXQUOTAS];
6270         struct dquot * const *dquots;
6271
6272 +       if ((ret = dl_alloc_inode(inode)))
6273 +               return ret;
6274 +
6275         if (!dquot_active(inode))
6276                 return 0;
6277         for (cnt = 0; cnt < MAXQUOTAS; cnt++)
6278 @@ -1813,6 +1819,8 @@ void __dquot_free_space(struct inode *in
6279         struct dquot **dquots;
6280         int reserve = flags & DQUOT_SPACE_RESERVE, index;
6281
6282 +       dl_free_space(inode, number);
6283 +
6284         if (!dquot_active(inode)) {
6285                 inode_decr_space(inode, number, reserve);
6286                 return;
6287 @@ -1857,6 +1865,8 @@ void dquot_free_inode(struct inode *inod
6288         struct dquot * const *dquots;
6289         int index;
6290
6291 +       dl_free_inode(inode);
6292 +
6293         if (!dquot_active(inode))
6294                 return;
6295
6296 diff -urNp -x '*.orig' linux-4.9/fs/quota/quota.c linux-4.9/fs/quota/quota.c
6297 --- linux-4.9/fs/quota/quota.c  2021-02-24 15:47:32.327343590 +0100
6298 +++ linux-4.9/fs/quota/quota.c  2021-02-24 15:47:45.084409345 +0100
6299 @@ -8,6 +8,7 @@
6300  #include <linux/fs.h>
6301  #include <linux/namei.h>
6302  #include <linux/slab.h>
6303 +#include <linux/vs_context.h>
6304  #include <asm/current.h>
6305  #include <linux/uaccess.h>
6306  #include <linux/kernel.h>
6307 @@ -39,7 +40,7 @@ static int check_quotactl_permission(str
6308                         break;
6309                 /*FALLTHROUGH*/
6310         default:
6311 -               if (!capable(CAP_SYS_ADMIN))
6312 +               if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
6313                         return -EPERM;
6314         }
6315
6316 @@ -770,6 +771,46 @@ static int do_quotactl(struct super_bloc
6317
6318  #ifdef CONFIG_BLOCK
6319
6320 +#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
6321 +
6322 +#include <linux/vroot.h>
6323 +#include <linux/major.h>
6324 +#include <linux/module.h>
6325 +#include <linux/kallsyms.h>
6326 +#include <linux/vserver/debug.h>
6327 +
6328 +static vroot_grb_func *vroot_get_real_bdev = NULL;
6329 +
6330 +static DEFINE_SPINLOCK(vroot_grb_lock);
6331 +
6332 +int register_vroot_grb(vroot_grb_func *func) {
6333 +       int ret = -EBUSY;
6334 +
6335 +       spin_lock(&vroot_grb_lock);
6336 +       if (!vroot_get_real_bdev) {
6337 +               vroot_get_real_bdev = func;
6338 +               ret = 0;
6339 +       }
6340 +       spin_unlock(&vroot_grb_lock);
6341 +       return ret;
6342 +}
6343 +EXPORT_SYMBOL(register_vroot_grb);
6344 +
6345 +int unregister_vroot_grb(vroot_grb_func *func) {
6346 +       int ret = -EINVAL;
6347 +
6348 +       spin_lock(&vroot_grb_lock);
6349 +       if (vroot_get_real_bdev) {
6350 +               vroot_get_real_bdev = NULL;
6351 +               ret = 0;
6352 +       }
6353 +       spin_unlock(&vroot_grb_lock);
6354 +       return ret;
6355 +}
6356 +EXPORT_SYMBOL(unregister_vroot_grb);
6357 +
6358 +#endif
6359 +
6360  /* Return 1 if 'cmd' will block on frozen filesystem */
6361  static int quotactl_cmd_write(int cmd)
6362  {
6363 @@ -811,6 +852,22 @@ static struct super_block *quotactl_bloc
6364         putname(tmp);
6365         if (IS_ERR(bdev))
6366                 return ERR_CAST(bdev);
6367 +#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
6368 +       if (bdev && bdev->bd_inode &&
6369 +               imajor(bdev->bd_inode) == VROOT_MAJOR) {
6370 +               struct block_device *bdnew = (void *)-EINVAL;
6371 +
6372 +               if (vroot_get_real_bdev)
6373 +                       bdnew = vroot_get_real_bdev(bdev);
6374 +               else
6375 +                       vxdprintk(VXD_CBIT(misc, 0),
6376 +                                       "vroot_get_real_bdev not set");
6377 +               bdput(bdev);
6378 +               if (IS_ERR(bdnew))
6379 +                       return ERR_PTR(PTR_ERR(bdnew));
6380 +               bdev = bdnew;
6381 +       }
6382 +#endif
6383         if (quotactl_cmd_write(cmd))
6384                 sb = get_super_thawed(bdev);
6385         else
6386 diff -urNp -x '*.orig' linux-4.9/fs/stat.c linux-4.9/fs/stat.c
6387 --- linux-4.9/fs/stat.c 2021-02-24 15:47:32.334010466 +0100
6388 +++ linux-4.9/fs/stat.c 2021-02-24 15:47:45.084409345 +0100
6389 @@ -26,6 +26,7 @@ void generic_fillattr(struct inode *inod
6390         stat->nlink = inode->i_nlink;
6391         stat->uid = inode->i_uid;
6392         stat->gid = inode->i_gid;
6393 +       stat->tag = inode->i_tag;
6394         stat->rdev = inode->i_rdev;
6395         stat->size = i_size_read(inode);
6396         stat->atime = inode->i_atime;
6397 diff -urNp -x '*.orig' linux-4.9/fs/statfs.c linux-4.9/fs/statfs.c
6398 --- linux-4.9/fs/statfs.c       2016-12-11 20:17:54.000000000 +0100
6399 +++ linux-4.9/fs/statfs.c       2021-02-24 15:47:45.084409345 +0100
6400 @@ -7,6 +7,8 @@
6401  #include <linux/statfs.h>
6402  #include <linux/security.h>
6403  #include <linux/uaccess.h>
6404 +#include <linux/vs_base.h>
6405 +#include <linux/vs_dlimit.h>
6406  #include "internal.h"
6407
6408  static int flags_by_mnt(int mnt_flags)
6409 @@ -60,6 +62,8 @@ static int statfs_by_dentry(struct dentr
6410         retval = dentry->d_sb->s_op->statfs(dentry, buf);
6411         if (retval == 0 && buf->f_frsize == 0)
6412                 buf->f_frsize = buf->f_bsize;
6413 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
6414 +               vx_vsi_statfs(dentry->d_sb, buf);
6415         return retval;
6416  }
6417
6418 diff -urNp -x '*.orig' linux-4.9/fs/super.c linux-4.9/fs/super.c
6419 --- linux-4.9/fs/super.c        2021-02-24 15:47:32.334010466 +0100
6420 +++ linux-4.9/fs/super.c        2021-02-24 15:47:45.084409345 +0100
6421 @@ -34,6 +34,8 @@
6422  #include <linux/fsnotify.h>
6423  #include <linux/lockdep.h>
6424  #include <linux/user_namespace.h>
6425 +#include <linux/magic.h>
6426 +#include <linux/vs_context.h>
6427  #include "internal.h"
6428
6429
6430 @@ -482,7 +484,7 @@ struct super_block *sget_userns(struct f
6431
6432         if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT)) &&
6433             !(type->fs_flags & FS_USERNS_MOUNT) &&
6434 -           !capable(CAP_SYS_ADMIN))
6435 +           !vx_capable(CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
6436                 return ERR_PTR(-EPERM);
6437  retry:
6438         spin_lock(&sb_lock);
6439 @@ -563,7 +565,8 @@ struct super_block *sget(struct file_sys
6440                 user_ns = &init_user_ns;
6441
6442         /* Ensure the requestor has permissions over the target filesystem */
6443 -       if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT)) && !ns_capable(user_ns, CAP_SYS_ADMIN))
6444 +       if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT)) &&
6445 +           !vx_ns_capable(user_ns, CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
6446                 return ERR_PTR(-EPERM);
6447
6448         return sget_userns(type, test, set, flags, user_ns, data);
6449 @@ -995,7 +998,8 @@ struct dentry *mount_ns(struct file_syst
6450         /* Don't allow mounting unless the caller has CAP_SYS_ADMIN
6451          * over the namespace.
6452          */
6453 -       if (!(flags & MS_KERNMOUNT) && !ns_capable(user_ns, CAP_SYS_ADMIN))
6454 +       if (!(flags & MS_KERNMOUNT) &&
6455 +               !vx_ns_capable(user_ns, CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
6456                 return ERR_PTR(-EPERM);
6457
6458         sb = sget_userns(fs_type, ns_test_super, ns_set_super, flags,
6459 @@ -1213,6 +1217,13 @@ mount_fs(struct file_system_type *type,
6460         smp_wmb();
6461         sb->s_flags |= MS_BORN;
6462
6463 +       error = -EPERM;
6464 +       if (!vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT) &&
6465 +               !sb->s_bdev &&
6466 +               (sb->s_magic != PROC_SUPER_MAGIC) &&
6467 +               (sb->s_magic != DEVPTS_SUPER_MAGIC))
6468 +               goto out_sb;
6469 +
6470         error = security_sb_kern_mount(sb, flags, secdata);
6471         if (error)
6472                 goto out_sb;
6473 diff -urNp -x '*.orig' linux-4.9/fs/utimes.c linux-4.9/fs/utimes.c
6474 --- linux-4.9/fs/utimes.c       2016-12-11 20:17:54.000000000 +0100
6475 +++ linux-4.9/fs/utimes.c       2021-02-24 15:47:45.084409345 +0100
6476 @@ -8,6 +8,8 @@
6477  #include <linux/stat.h>
6478  #include <linux/utime.h>
6479  #include <linux/syscalls.h>
6480 +#include <linux/mount.h>
6481 +#include <linux/vs_cowbl.h>
6482  #include <asm/uaccess.h>
6483  #include <asm/unistd.h>
6484
6485 @@ -52,13 +54,19 @@ static int utimes_common(struct path *pa
6486  {
6487         int error;
6488         struct iattr newattrs;
6489 -       struct inode *inode = path->dentry->d_inode;
6490         struct inode *delegated_inode = NULL;
6491 +       struct inode *inode;
6492 +
6493 +       error = cow_check_and_break(path);
6494 +       if (error)
6495 +               goto out;
6496
6497         error = mnt_want_write(path->mnt);
6498         if (error)
6499                 goto out;
6500
6501 +       inode = path->dentry->d_inode;
6502 +
6503         if (times && times[0].tv_nsec == UTIME_NOW &&
6504                      times[1].tv_nsec == UTIME_NOW)
6505                 times = NULL;
6506 diff -urNp -x '*.orig' linux-4.9/fs/xattr.c linux-4.9/fs/xattr.c
6507 --- linux-4.9/fs/xattr.c        2021-02-24 15:47:32.340677341 +0100
6508 +++ linux-4.9/fs/xattr.c        2021-02-24 15:47:45.084409345 +0100
6509 @@ -21,6 +21,7 @@
6510  #include <linux/audit.h>
6511  #include <linux/vmalloc.h>
6512  #include <linux/posix_acl_xattr.h>
6513 +#include <linux/mount.h>
6514
6515  #include <asm/uaccess.h>
6516
6517 @@ -112,7 +113,7 @@ xattr_permission(struct inode *inode, co
6518          * The trusted.* namespace can only be accessed by privileged users.
6519          */
6520         if (!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) {
6521 -               if (!capable(CAP_SYS_ADMIN))
6522 +               if (!vx_capable(CAP_SYS_ADMIN, VXC_FS_TRUSTED))
6523                         return (mask & MAY_WRITE) ? -EPERM : -ENODATA;
6524                 return 0;
6525         }
6526 diff -urNp -x '*.orig' linux-4.9/include/linux/capability.h linux-4.9/include/linux/capability.h
6527 --- linux-4.9/include/linux/capability.h        2021-02-24 15:47:32.377345154 +0100
6528 +++ linux-4.9/include/linux/capability.h        2021-02-24 15:47:45.084409345 +0100
6529 @@ -78,7 +78,8 @@ extern const kernel_cap_t __cap_init_eff
6530  #else /* HAND-CODED capability initializers */
6531
6532  #define CAP_LAST_U32                   ((_KERNEL_CAPABILITY_U32S) - 1)
6533 -#define CAP_LAST_U32_VALID_MASK                (CAP_TO_MASK(CAP_LAST_CAP + 1) -1)
6534 +#define CAP_LAST_U32_VALID_MASK                ((CAP_TO_MASK(CAP_LAST_CAP + 1) -1) \
6535 +                                       | CAP_TO_MASK(CAP_CONTEXT))
6536
6537  # define CAP_EMPTY_SET    ((kernel_cap_t){{ 0, 0 }})
6538  # define CAP_FULL_SET     ((kernel_cap_t){{ ~0, CAP_LAST_U32_VALID_MASK }})
6539 diff -urNp -x '*.orig' linux-4.9/include/linux/cred.h linux-4.9/include/linux/cred.h
6540 --- linux-4.9/include/linux/cred.h      2021-02-24 15:47:32.380678592 +0100
6541 +++ linux-4.9/include/linux/cred.h      2021-02-24 15:47:45.087742783 +0100
6542 @@ -156,6 +156,7 @@ extern void exit_creds(struct task_struc
6543  extern int copy_creds(struct task_struct *, unsigned long);
6544  extern const struct cred *get_task_cred(struct task_struct *);
6545  extern struct cred *cred_alloc_blank(void);
6546 +extern struct cred *__prepare_creds(const struct cred *);
6547  extern struct cred *prepare_creds(void);
6548  extern struct cred *prepare_exec_creds(void);
6549  extern int commit_creds(struct cred *);
6550 @@ -216,6 +217,31 @@ static inline bool cap_ambient_invariant
6551                                           cred->cap_inheritable));
6552  }
6553
6554 +static inline void set_cred_subscribers(struct cred *cred, int n)
6555 +{
6556 +#ifdef CONFIG_DEBUG_CREDENTIALS
6557 +       atomic_set(&cred->subscribers, n);
6558 +#endif
6559 +}
6560 +
6561 +static inline int read_cred_subscribers(const struct cred *cred)
6562 +{
6563 +#ifdef CONFIG_DEBUG_CREDENTIALS
6564 +       return atomic_read(&cred->subscribers);
6565 +#else
6566 +       return 0;
6567 +#endif
6568 +}
6569 +
6570 +static inline void alter_cred_subscribers(const struct cred *_cred, int n)
6571 +{
6572 +#ifdef CONFIG_DEBUG_CREDENTIALS
6573 +       struct cred *cred = (struct cred *) _cred;
6574 +
6575 +       atomic_add(n, &cred->subscribers);
6576 +#endif
6577 +}
6578 +
6579  /**
6580   * get_new_cred - Get a reference on a new set of credentials
6581   * @cred: The new credentials to reference
6582 diff -urNp -x '*.orig' linux-4.9/include/linux/dcache.h linux-4.9/include/linux/dcache.h
6583 --- linux-4.9/include/linux/dcache.h    2021-02-24 15:47:32.380678592 +0100
6584 +++ linux-4.9/include/linux/dcache.h    2021-02-24 15:47:45.087742783 +0100
6585 @@ -308,8 +308,10 @@ extern char *dentry_path(struct dentry *
6586   */
6587  static inline struct dentry *dget_dlock(struct dentry *dentry)
6588  {
6589 -       if (dentry)
6590 +       if (dentry) {
6591                 dentry->d_lockref.count++;
6592 +               // vx_dentry_inc(dentry);
6593 +       }
6594         return dentry;
6595  }
6596
6597 diff -urNp -x '*.orig' linux-4.9/include/linux/devpts_fs.h linux-4.9/include/linux/devpts_fs.h
6598 --- linux-4.9/include/linux/devpts_fs.h 2016-12-11 20:17:54.000000000 +0100
6599 +++ linux-4.9/include/linux/devpts_fs.h 2021-02-24 15:47:45.087742783 +0100
6600 @@ -34,5 +34,4 @@ void devpts_pty_kill(struct dentry *);
6601
6602  #endif
6603
6604 -
6605  #endif /* _LINUX_DEVPTS_FS_H */
6606 diff -urNp -x '*.orig' linux-4.9/include/linux/fs.h linux-4.9/include/linux/fs.h
6607 --- linux-4.9/include/linux/fs.h        2021-02-24 15:47:32.384012030 +0100
6608 +++ linux-4.9/include/linux/fs.h        2021-02-24 15:47:45.087742783 +0100
6609 @@ -231,6 +231,7 @@ typedef int (dio_iodone_t)(struct kiocb
6610  #define ATTR_OPEN      (1 << 15) /* Truncating from open(O_TRUNC) */
6611  #define ATTR_TIMES_SET (1 << 16)
6612  #define ATTR_TOUCH     (1 << 17)
6613 +#define ATTR_TAG       (1 << 18)
6614
6615  /*
6616   * Whiteout is represented by a char device.  The following constants define the
6617 @@ -253,6 +254,7 @@ struct iattr {
6618         umode_t         ia_mode;
6619         kuid_t          ia_uid;
6620         kgid_t          ia_gid;
6621 +       ktag_t          ia_tag;
6622         loff_t          ia_size;
6623         struct timespec ia_atime;
6624         struct timespec ia_mtime;
6625 @@ -612,7 +614,9 @@ struct inode {
6626         unsigned short          i_opflags;
6627         kuid_t                  i_uid;
6628         kgid_t                  i_gid;
6629 -       unsigned int            i_flags;
6630 +       ktag_t                  i_tag;
6631 +       unsigned short          i_flags;
6632 +       unsigned short          i_vflags;
6633
6634  #ifdef CONFIG_FS_POSIX_ACL
6635         struct posix_acl        *i_acl;
6636 @@ -641,6 +645,7 @@ struct inode {
6637                 unsigned int __i_nlink;
6638         };
6639         dev_t                   i_rdev;
6640 +       dev_t                   i_mdev;
6641         loff_t                  i_size;
6642         struct timespec         i_atime;
6643         struct timespec         i_mtime;
6644 @@ -846,14 +851,19 @@ static inline void i_size_write(struct i
6645  #endif
6646  }
6647
6648 +static inline void i_tag_write(struct inode *inode, vtag_t tag)
6649 +{
6650 +       inode->i_tag = make_ktag(&init_user_ns, tag);
6651 +}
6652 +
6653  static inline unsigned iminor(const struct inode *inode)
6654  {
6655 -       return MINOR(inode->i_rdev);
6656 +       return MINOR(inode->i_mdev);
6657  }
6658
6659  static inline unsigned imajor(const struct inode *inode)
6660  {
6661 -       return MAJOR(inode->i_rdev);
6662 +       return MAJOR(inode->i_mdev);
6663  }
6664
6665  extern struct block_device *I_BDEV(struct inode *inode);
6666 @@ -910,6 +920,7 @@ struct file {
6667         loff_t                  f_pos;
6668         struct fown_struct      f_owner;
6669         const struct cred       *f_cred;
6670 +       vxid_t                  f_xid;
6671         struct file_ra_state    f_ra;
6672
6673         u64                     f_version;
6674 @@ -1044,6 +1055,7 @@ struct file_lock {
6675         struct file *fl_file;
6676         loff_t fl_start;
6677         loff_t fl_end;
6678 +       vxid_t fl_xid;
6679
6680         struct fasync_struct *  fl_fasync; /* for lease break notifications */
6681         /* for lease breaks: */
6682 @@ -1477,6 +1489,11 @@ static inline gid_t i_gid_read(const str
6683         return from_kgid(inode->i_sb->s_user_ns, inode->i_gid);
6684  }
6685
6686 +static inline vtag_t i_tag_read(const struct inode *inode)
6687 +{
6688 +       return from_ktag(&init_user_ns, inode->i_tag);
6689 +}
6690 +
6691  static inline void i_uid_write(struct inode *inode, uid_t uid)
6692  {
6693         inode->i_uid = make_kuid(inode->i_sb->s_user_ns, uid);
6694 @@ -1766,6 +1783,7 @@ struct inode_operations {
6695         int (*setattr) (struct dentry *, struct iattr *);
6696         int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
6697         ssize_t (*listxattr) (struct dentry *, char *, size_t);
6698 +       int (*sync_flags) (struct inode *, int, int);
6699         int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
6700                       u64 len);
6701         int (*update_time)(struct inode *, struct timespec *, int);
6702 @@ -1780,6 +1798,7 @@ ssize_t rw_copy_check_uvector(int type,
6703                               unsigned long nr_segs, unsigned long fast_segs,
6704                               struct iovec *fast_pointer,
6705                               struct iovec **ret_pointer);
6706 +ssize_t vfs_sendfile(struct file *, struct file *, loff_t *, size_t, loff_t);
6707
6708  extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
6709  extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *);
6710 @@ -1851,6 +1870,14 @@ struct super_operations {
6711  #else
6712  #define S_DAX          0       /* Make all the DAX code disappear */
6713  #endif
6714 +#define S_IXUNLINK     16384   /* Immutable Invert on unlink */
6715 +
6716 +/* Linux-VServer related Inode flags */
6717 +
6718 +#define V_VALID                1
6719 +#define V_XATTR                2
6720 +#define V_BARRIER      4       /* Barrier for chroot() */
6721 +#define V_COW          8       /* Copy on Write */
6722
6723  /*
6724   * Note that nosuid etc flags are inode-specific: setting some file-system
6725 @@ -1875,10 +1902,13 @@ struct super_operations {
6726  #define IS_MANDLOCK(inode)     __IS_FLG(inode, MS_MANDLOCK)
6727  #define IS_NOATIME(inode)      __IS_FLG(inode, MS_RDONLY|MS_NOATIME)
6728  #define IS_I_VERSION(inode)    __IS_FLG(inode, MS_I_VERSION)
6729 +#define IS_TAGGED(inode)       __IS_FLG(inode, MS_TAGGED)
6730
6731  #define IS_NOQUOTA(inode)      ((inode)->i_flags & S_NOQUOTA)
6732  #define IS_APPEND(inode)       ((inode)->i_flags & S_APPEND)
6733  #define IS_IMMUTABLE(inode)    ((inode)->i_flags & S_IMMUTABLE)
6734 +#define IS_IXUNLINK(inode)     ((inode)->i_flags & S_IXUNLINK)
6735 +#define IS_IXORUNLINK(inode)   ((IS_IXUNLINK(inode) ? S_IMMUTABLE : 0) ^ IS_IMMUTABLE(inode))
6736  #define IS_POSIXACL(inode)     __IS_FLG(inode, MS_POSIXACL)
6737
6738  #define IS_DEADDIR(inode)      ((inode)->i_flags & S_DEAD)
6739 @@ -1898,6 +1928,16 @@ static inline bool HAS_UNMAPPED_ID(struc
6740         return !uid_valid(inode->i_uid) || !gid_valid(inode->i_gid);
6741  }
6742
6743 +#define IS_BARRIER(inode)      (S_ISDIR((inode)->i_mode) && ((inode)->i_vflags & V_BARRIER))
6744 +
6745 +#ifdef CONFIG_VSERVER_COWBL
6746 +#  define IS_COW(inode)                (IS_IXUNLINK(inode) && IS_IMMUTABLE(inode))
6747 +#  define IS_COW_LINK(inode)   (S_ISREG((inode)->i_mode) && ((inode)->i_nlink > 1))
6748 +#else
6749 +#  define IS_COW(inode)                (0)
6750 +#  define IS_COW_LINK(inode)   (0)
6751 +#endif
6752 +
6753  /*
6754   * Inode state bits.  Protected by inode->i_lock
6755   *
6756 @@ -2167,6 +2207,9 @@ extern struct kobject *fs_kobj;
6757  extern int locks_mandatory_locked(struct file *);
6758  extern int locks_mandatory_area(struct inode *, struct file *, loff_t, loff_t, unsigned char);
6759
6760 +#define ATTR_FLAG_BARRIER      512     /* Barrier for chroot() */
6761 +#define ATTR_FLAG_IXUNLINK     1024    /* Immutable invert on unlink */
6762 +
6763  /*
6764   * Candidates for mandatory locking have the setgid bit set
6765   * but no group execute bit -  an otherwise meaningless combination.
6766 @@ -2347,7 +2390,7 @@ struct filename {
6767         const char              iname[];
6768  };
6769
6770 -extern long vfs_truncate(const struct path *, loff_t);
6771 +extern long vfs_truncate(struct path *, loff_t);
6772  extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
6773                        struct file *filp);
6774  extern int vfs_fallocate(struct file *file, int mode, loff_t offset,
6775 @@ -2978,6 +3021,7 @@ extern int dcache_dir_open(struct inode
6776  extern int dcache_dir_close(struct inode *, struct file *);
6777  extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
6778  extern int dcache_readdir(struct file *, struct dir_context *);
6779 +extern int dcache_readdir_filter(struct file *, struct dir_context *, int (*)(struct dentry *));
6780  extern int simple_setattr(struct dentry *, struct iattr *);
6781  extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
6782  extern int simple_statfs(struct dentry *, struct kstatfs *);
6783 diff -urNp -x '*.orig' linux-4.9/include/linux/init_task.h linux-4.9/include/linux/init_task.h
6784 --- linux-4.9/include/linux/init_task.h 2016-12-11 20:17:54.000000000 +0100
6785 +++ linux-4.9/include/linux/init_task.h 2021-02-24 15:47:45.087742783 +0100
6786 @@ -271,6 +271,10 @@ extern struct task_group root_task_group
6787         INIT_VTIME(tsk)                                                 \
6788         INIT_NUMA_BALANCING(tsk)                                        \
6789         INIT_KASAN(tsk)                                                 \
6790 +       .xid            = 0,                                            \
6791 +       .vx_info        = NULL,                                         \
6792 +       .nid            = 0,                                            \
6793 +       .nx_info        = NULL,                                         \
6794  }
6795
6796
6797 diff -urNp -x '*.orig' linux-4.9/include/linux/ipc.h linux-4.9/include/linux/ipc.h
6798 --- linux-4.9/include/linux/ipc.h       2016-12-11 20:17:54.000000000 +0100
6799 +++ linux-4.9/include/linux/ipc.h       2021-02-24 15:47:45.087742783 +0100
6800 @@ -16,6 +16,7 @@ struct kern_ipc_perm
6801         key_t           key;
6802         kuid_t          uid;
6803         kgid_t          gid;
6804 +       vxid_t          xid;
6805         kuid_t          cuid;
6806         kgid_t          cgid;
6807         umode_t         mode;
6808 diff -urNp -x '*.orig' linux-4.9/include/linux/memcontrol.h linux-4.9/include/linux/memcontrol.h
6809 --- linux-4.9/include/linux/memcontrol.h        2021-02-24 15:47:32.397345780 +0100
6810 +++ linux-4.9/include/linux/memcontrol.h        2021-02-24 15:47:45.087742783 +0100
6811 @@ -92,6 +92,7 @@ enum mem_cgroup_events_target {
6812         MEM_CGROUP_NTARGETS,
6813  };
6814
6815 +
6816  #ifdef CONFIG_MEMCG
6817
6818  #define MEM_CGROUP_ID_SHIFT    16
6819 @@ -402,6 +403,12 @@ static inline bool mem_cgroup_is_descend
6820         return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup);
6821  }
6822
6823 +extern unsigned long mem_cgroup_mem_usage_pages(struct mem_cgroup *memcg);
6824 +extern unsigned long mem_cgroup_mem_limit_pages(struct mem_cgroup *memcg);
6825 +extern unsigned long mem_cgroup_memsw_usage_pages(struct mem_cgroup *memcg);
6826 +extern unsigned long mem_cgroup_memsw_limit_pages(struct mem_cgroup *memcg);
6827 +extern void dump_mem_cgroup(struct mem_cgroup *memcg);
6828 +
6829  static inline bool mm_match_cgroup(struct mm_struct *mm,
6830                                    struct mem_cgroup *memcg)
6831  {
6832 diff -urNp -x '*.orig' linux-4.9/include/linux/mount.h linux-4.9/include/linux/mount.h
6833 --- linux-4.9/include/linux/mount.h     2021-02-24 15:47:32.400679218 +0100
6834 +++ linux-4.9/include/linux/mount.h     2021-02-24 15:47:45.087742783 +0100
6835 @@ -63,6 +63,9 @@ struct mnt_namespace;
6836  #define MNT_MARKED             0x4000000
6837  #define MNT_UMOUNT             0x8000000
6838
6839 +#define MNT_TAGID      0x10000
6840 +#define MNT_NOTAG      0x20000
6841 +
6842  struct vfsmount {
6843         struct dentry *mnt_root;        /* root of the mounted tree */
6844         struct super_block *mnt_sb;     /* pointer to superblock */
6845 diff -urNp -x '*.orig' linux-4.9/include/linux/net.h linux-4.9/include/linux/net.h
6846 --- linux-4.9/include/linux/net.h       2021-02-24 15:47:32.400679218 +0100
6847 +++ linux-4.9/include/linux/net.h       2021-02-24 15:47:45.091076220 +0100
6848 @@ -44,6 +44,7 @@ struct net;
6849  #define SOCK_NOSPACE           2
6850  #define SOCK_PASSCRED          3
6851  #define SOCK_PASSSEC           4
6852 +#define SOCK_USER_SOCKET       5
6853
6854  #ifndef ARCH_HAS_SOCKET_TYPES
6855  /**
6856 diff -urNp -x '*.orig' linux-4.9/include/linux/netdevice.h linux-4.9/include/linux/netdevice.h
6857 --- linux-4.9/include/linux/netdevice.h 2021-02-24 15:47:33.074033615 +0100
6858 +++ linux-4.9/include/linux/netdevice.h 2021-02-24 15:47:45.087742783 +0100
6859 @@ -2489,6 +2489,7 @@ static inline int dev_recursion_level(vo
6860
6861  struct net_device *dev_get_by_index(struct net *net, int ifindex);
6862  struct net_device *__dev_get_by_index(struct net *net, int ifindex);
6863 +struct net_device *dev_get_by_index_real_rcu(struct net *net, int ifindex);
6864  struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
6865  int netdev_get_name(struct net *net, char *name, int ifindex);
6866  int dev_restart(struct net_device *dev);
6867 diff -urNp -x '*.orig' linux-4.9/include/linux/nsproxy.h linux-4.9/include/linux/nsproxy.h
6868 --- linux-4.9/include/linux/nsproxy.h   2016-12-11 20:17:54.000000000 +0100
6869 +++ linux-4.9/include/linux/nsproxy.h   2021-02-24 15:47:45.091076220 +0100
6870 @@ -3,6 +3,7 @@
6871
6872  #include <linux/spinlock.h>
6873  #include <linux/sched.h>
6874 +#include <linux/vserver/debug.h>
6875
6876  struct mnt_namespace;
6877  struct uts_namespace;
6878 @@ -65,6 +66,7 @@ extern struct nsproxy init_nsproxy;
6879   */
6880
6881  int copy_namespaces(unsigned long flags, struct task_struct *tsk);
6882 +struct nsproxy *copy_nsproxy(struct nsproxy *orig);
6883  void exit_task_namespaces(struct task_struct *tsk);
6884  void switch_task_namespaces(struct task_struct *tsk, struct nsproxy *new);
6885  void free_nsproxy(struct nsproxy *ns);
6886 @@ -72,16 +74,26 @@ int unshare_nsproxy_namespaces(unsigned
6887         struct cred *, struct fs_struct *);
6888  int __init nsproxy_cache_init(void);
6889
6890 -static inline void put_nsproxy(struct nsproxy *ns)
6891 +#define        get_nsproxy(n)  __get_nsproxy(n, __FILE__, __LINE__)
6892 +
6893 +static inline void __get_nsproxy(struct nsproxy *ns,
6894 +       const char *_file, int _line)
6895  {
6896 -       if (atomic_dec_and_test(&ns->count)) {
6897 -               free_nsproxy(ns);
6898 -       }
6899 +       vxlprintk(VXD_CBIT(space, 0), "get_nsproxy(%p[%u])",
6900 +               ns, atomic_read(&ns->count), _file, _line);
6901 +       atomic_inc(&ns->count);
6902  }
6903
6904 -static inline void get_nsproxy(struct nsproxy *ns)
6905 +#define        put_nsproxy(n)  __put_nsproxy(n, __FILE__, __LINE__)
6906 +
6907 +static inline void __put_nsproxy(struct nsproxy *ns,
6908 +       const char *_file, int _line)
6909  {
6910 -       atomic_inc(&ns->count);
6911 +       vxlprintk(VXD_CBIT(space, 0), "put_nsproxy(%p[%u])",
6912 +               ns, atomic_read(&ns->count), _file, _line);
6913 +       if (atomic_dec_and_test(&ns->count)) {
6914 +               free_nsproxy(ns);
6915 +       }
6916  }
6917
6918  #endif
6919 diff -urNp -x '*.orig' linux-4.9/include/linux/pid.h linux-4.9/include/linux/pid.h
6920 --- linux-4.9/include/linux/pid.h       2021-02-24 15:47:32.407346093 +0100
6921 +++ linux-4.9/include/linux/pid.h       2021-02-24 15:47:45.091076220 +0100
6922 @@ -10,7 +10,8 @@ enum pid_type
6923         PIDTYPE_SID,
6924         PIDTYPE_MAX,
6925         /* only valid to __task_pid_nr_ns() */
6926 -       __PIDTYPE_TGID
6927 +       __PIDTYPE_TGID,
6928 +       __PIDTYPE_REALPID
6929  };
6930
6931  /*
6932 @@ -172,6 +173,7 @@ static inline pid_t pid_nr(struct pid *p
6933  }
6934
6935  pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns);
6936 +pid_t pid_unmapped_nr_ns(struct pid *pid, struct pid_namespace *ns);
6937  pid_t pid_vnr(struct pid *pid);
6938
6939  #define do_each_pid_task(pid, type, task)                              \
6940 diff -urNp -x '*.orig' linux-4.9/include/linux/quotaops.h linux-4.9/include/linux/quotaops.h
6941 --- linux-4.9/include/linux/quotaops.h  2021-02-24 15:47:32.410679531 +0100
6942 +++ linux-4.9/include/linux/quotaops.h  2021-02-24 15:47:45.091076220 +0100
6943 @@ -8,6 +8,7 @@
6944  #define _LINUX_QUOTAOPS_
6945
6946  #include <linux/fs.h>
6947 +#include <linux/vs_dlimit.h>
6948
6949  #define DQUOT_SPACE_WARN       0x1
6950  #define DQUOT_SPACE_RESERVE    0x2
6951 @@ -224,11 +225,12 @@ static inline void dquot_drop(struct ino
6952
6953  static inline int dquot_alloc_inode(struct inode *inode)
6954  {
6955 -       return 0;
6956 +       return dl_alloc_inode(inode);
6957  }
6958
6959  static inline void dquot_free_inode(struct inode *inode)
6960  {
6961 +       dl_free_inode(inode);
6962  }
6963
6964  static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
6965 @@ -239,6 +241,10 @@ static inline int dquot_transfer(struct
6966  static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
6967                 int flags)
6968  {
6969 +       int ret = 0;
6970 +
6971 +       if ((ret = dl_alloc_space(inode, number)))
6972 +               return ret;
6973         if (!(flags & DQUOT_SPACE_RESERVE))
6974                 inode_add_bytes(inode, number);
6975         return 0;
6976 @@ -249,6 +255,7 @@ static inline void __dquot_free_space(st
6977  {
6978         if (!(flags & DQUOT_SPACE_RESERVE))
6979                 inode_sub_bytes(inode, number);
6980 +       dl_free_space(inode, number);
6981  }
6982
6983  static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
6984 diff -urNp -x '*.orig' linux-4.9/include/linux/sched.h linux-4.9/include/linux/sched.h
6985 --- linux-4.9/include/linux/sched.h     2021-02-24 15:47:32.414012968 +0100
6986 +++ linux-4.9/include/linux/sched.h     2021-02-24 15:47:45.091076220 +0100
6987 @@ -1719,6 +1719,14 @@ struct task_struct {
6988  #endif
6989         struct seccomp seccomp;
6990
6991 +/* vserver context data */
6992 +       struct vx_info *vx_info;
6993 +       struct nx_info *nx_info;
6994 +
6995 +       vxid_t xid;
6996 +       vnid_t nid;
6997 +       vtag_t tag;
6998 +
6999  /* Thread group tracking */
7000         u64 parent_exec_id;
7001         u64 self_exec_id;
7002 @@ -2114,6 +2122,11 @@ struct pid_namespace;
7003  pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
7004                         struct pid_namespace *ns);
7005
7006 +#include <linux/vserver/base.h>
7007 +#include <linux/vserver/context.h>
7008 +#include <linux/vserver/debug.h>
7009 +#include <linux/vserver/pid.h>
7010 +
7011  static inline pid_t task_pid_nr(struct task_struct *tsk)
7012  {
7013         return tsk->pid;
7014 @@ -2127,7 +2140,8 @@ static inline pid_t task_pid_nr_ns(struc
7015
7016  static inline pid_t task_pid_vnr(struct task_struct *tsk)
7017  {
7018 -       return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
7019 +       // return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
7020 +       return vx_map_pid(__task_pid_nr_ns(tsk, PIDTYPE_PID, NULL));
7021  }
7022
7023
7024 diff -urNp -x '*.orig' linux-4.9/include/linux/shmem_fs.h linux-4.9/include/linux/shmem_fs.h
7025 --- linux-4.9/include/linux/shmem_fs.h  2016-12-11 20:17:54.000000000 +0100
7026 +++ linux-4.9/include/linux/shmem_fs.h  2021-02-24 15:47:45.091076220 +0100
7027 @@ -10,6 +10,9 @@
7028
7029  /* inode in-kernel data */
7030
7031 +#define TMPFS_SUPER_MAGIC      0x01021994
7032 +
7033 +
7034  struct shmem_inode_info {
7035         spinlock_t              lock;
7036         unsigned int            seals;          /* shmem seals */
7037 diff -urNp -x '*.orig' linux-4.9/include/linux/stat.h linux-4.9/include/linux/stat.h
7038 --- linux-4.9/include/linux/stat.h      2016-12-11 20:17:54.000000000 +0100
7039 +++ linux-4.9/include/linux/stat.h      2021-02-24 15:47:45.091076220 +0100
7040 @@ -25,6 +25,7 @@ struct kstat {
7041         unsigned int    nlink;
7042         kuid_t          uid;
7043         kgid_t          gid;
7044 +       ktag_t          tag;
7045         dev_t           rdev;
7046         loff_t          size;
7047         struct timespec  atime;
7048 diff -urNp -x '*.orig' linux-4.9/include/linux/sunrpc/auth.h linux-4.9/include/linux/sunrpc/auth.h
7049 --- linux-4.9/include/linux/sunrpc/auth.h       2016-12-11 20:17:54.000000000 +0100
7050 +++ linux-4.9/include/linux/sunrpc/auth.h       2021-02-24 15:47:45.091076220 +0100
7051 @@ -46,6 +46,7 @@ enum {
7052  struct auth_cred {
7053         kuid_t  uid;
7054         kgid_t  gid;
7055 +       ktag_t  tag;
7056         struct group_info *group_info;
7057         const char *principal;
7058         unsigned long ac_flags;
7059 diff -urNp -x '*.orig' linux-4.9/include/linux/sunrpc/clnt.h linux-4.9/include/linux/sunrpc/clnt.h
7060 --- linux-4.9/include/linux/sunrpc/clnt.h       2021-02-24 15:47:32.417346405 +0100
7061 +++ linux-4.9/include/linux/sunrpc/clnt.h       2021-02-24 15:47:45.091076220 +0100
7062 @@ -52,7 +52,8 @@ struct rpc_clnt {
7063                                 cl_discrtry : 1,/* disconnect before retry */
7064                                 cl_noretranstimeo: 1,/* No retransmit timeouts */
7065                                 cl_autobind : 1,/* use getport() */
7066 -                               cl_chatty   : 1;/* be verbose */
7067 +                               cl_chatty   : 1,/* be verbose */
7068 +                               cl_tag      : 1;/* context tagging */
7069
7070         struct rpc_rtt *        cl_rtt;         /* RTO estimator data */
7071         const struct rpc_timeout *cl_timeout;   /* Timeout strategy */
7072 diff -urNp -x '*.orig' linux-4.9/include/linux/types.h linux-4.9/include/linux/types.h
7073 --- linux-4.9/include/linux/types.h     2016-12-11 20:17:54.000000000 +0100
7074 +++ linux-4.9/include/linux/types.h     2021-02-24 15:47:45.091076220 +0100
7075 @@ -32,6 +32,9 @@ typedef __kernel_uid32_t      uid_t;
7076  typedef __kernel_gid32_t       gid_t;
7077  typedef __kernel_uid16_t        uid16_t;
7078  typedef __kernel_gid16_t        gid16_t;
7079 +typedef unsigned int           vxid_t;
7080 +typedef unsigned int           vnid_t;
7081 +typedef unsigned int           vtag_t;
7082
7083  typedef unsigned long          uintptr_t;
7084
7085 diff -urNp -x '*.orig' linux-4.9/include/linux/uidgid.h linux-4.9/include/linux/uidgid.h
7086 --- linux-4.9/include/linux/uidgid.h    2016-12-11 20:17:54.000000000 +0100
7087 +++ linux-4.9/include/linux/uidgid.h    2021-02-24 15:47:45.091076220 +0100
7088 @@ -21,13 +21,17 @@ typedef struct {
7089         uid_t val;
7090  } kuid_t;
7091
7092 -
7093  typedef struct {
7094         gid_t val;
7095  } kgid_t;
7096
7097 +typedef struct {
7098 +       vtag_t val;
7099 +} ktag_t;
7100 +
7101  #define KUIDT_INIT(value) (kuid_t){ value }
7102  #define KGIDT_INIT(value) (kgid_t){ value }
7103 +#define KTAGT_INIT(value) (ktag_t){ value }
7104
7105  #ifdef CONFIG_MULTIUSER
7106  static inline uid_t __kuid_val(kuid_t uid)
7107 @@ -51,11 +55,18 @@ static inline gid_t __kgid_val(kgid_t gi
7108  }
7109  #endif
7110
7111 +static inline vtag_t __ktag_val(ktag_t tag)
7112 +{
7113 +       return tag.val;
7114 +}
7115 +
7116  #define GLOBAL_ROOT_UID KUIDT_INIT(0)
7117  #define GLOBAL_ROOT_GID KGIDT_INIT(0)
7118 +#define GLOBAL_ROOT_TAG KTAGT_INIT(0)
7119
7120  #define INVALID_UID KUIDT_INIT(-1)
7121  #define INVALID_GID KGIDT_INIT(-1)
7122 +#define INVALID_TAG KTAGT_INIT(-1)
7123
7124  static inline bool uid_eq(kuid_t left, kuid_t right)
7125  {
7126 @@ -67,6 +78,11 @@ static inline bool gid_eq(kgid_t left, k
7127         return __kgid_val(left) == __kgid_val(right);
7128  }
7129
7130 +static inline bool tag_eq(ktag_t left, ktag_t right)
7131 +{
7132 +       return __ktag_val(left) == __ktag_val(right);
7133 +}
7134 +
7135  static inline bool uid_gt(kuid_t left, kuid_t right)
7136  {
7137         return __kuid_val(left) > __kuid_val(right);
7138 @@ -117,13 +133,21 @@ static inline bool gid_valid(kgid_t gid)
7139         return __kgid_val(gid) != (gid_t) -1;
7140  }
7141
7142 +static inline bool tag_valid(ktag_t tag)
7143 +{
7144 +       return !tag_eq(tag, INVALID_TAG);
7145 +}
7146 +
7147  #ifdef CONFIG_USER_NS
7148
7149  extern kuid_t make_kuid(struct user_namespace *from, uid_t uid);
7150  extern kgid_t make_kgid(struct user_namespace *from, gid_t gid);
7151 +extern ktag_t make_ktag(struct user_namespace *from, gid_t gid);
7152
7153  extern uid_t from_kuid(struct user_namespace *to, kuid_t uid);
7154  extern gid_t from_kgid(struct user_namespace *to, kgid_t gid);
7155 +extern vtag_t from_ktag(struct user_namespace *to, ktag_t tag);
7156 +
7157  extern uid_t from_kuid_munged(struct user_namespace *to, kuid_t uid);
7158  extern gid_t from_kgid_munged(struct user_namespace *to, kgid_t gid);
7159
7160 @@ -149,6 +173,11 @@ static inline kgid_t make_kgid(struct us
7161         return KGIDT_INIT(gid);
7162  }
7163
7164 +static inline ktag_t make_ktag(struct user_namespace *from, vtag_t tag)
7165 +{
7166 +       return KTAGT_INIT(tag);
7167 +}
7168 +
7169  static inline uid_t from_kuid(struct user_namespace *to, kuid_t kuid)
7170  {
7171         return __kuid_val(kuid);
7172 @@ -159,6 +188,11 @@ static inline gid_t from_kgid(struct use
7173         return __kgid_val(kgid);
7174  }
7175
7176 +static inline vtag_t from_ktag(struct user_namespace *to, ktag_t ktag)
7177 +{
7178 +       return __ktag_val(ktag);
7179 +}
7180 +
7181  static inline uid_t from_kuid_munged(struct user_namespace *to, kuid_t kuid)
7182  {
7183         uid_t uid = from_kuid(to, kuid);
7184 diff -urNp -x '*.orig' linux-4.9/include/linux/vroot.h linux-4.9/include/linux/vroot.h
7185 --- linux-4.9/include/linux/vroot.h     1970-01-01 01:00:00.000000000 +0100
7186 +++ linux-4.9/include/linux/vroot.h     2021-02-24 15:47:45.091076220 +0100
7187 @@ -0,0 +1,51 @@
7188 +
7189 +/*
7190 + * include/linux/vroot.h
7191 + *
7192 + * written by Herbert P?tzl, 9/11/2002
7193 + * ported to 2.6 by Herbert P?tzl, 30/12/2004
7194 + *
7195 + * Copyright (C) 2002-2007 by Herbert P?tzl.
7196 + * Redistribution of this file is permitted under the
7197 + * GNU General Public License.
7198 + */
7199 +
7200 +#ifndef _LINUX_VROOT_H
7201 +#define _LINUX_VROOT_H
7202 +
7203 +
7204 +#ifdef __KERNEL__
7205 +
7206 +/* Possible states of device */
7207 +enum {
7208 +       Vr_unbound,
7209 +       Vr_bound,
7210 +};
7211 +
7212 +struct vroot_device {
7213 +       int             vr_number;
7214 +       int             vr_refcnt;
7215 +
7216 +       struct semaphore        vr_ctl_mutex;
7217 +       struct block_device    *vr_device;
7218 +       int                     vr_state;
7219 +};
7220 +
7221 +
7222 +typedef struct block_device *(vroot_grb_func)(struct block_device *);
7223 +
7224 +extern int register_vroot_grb(vroot_grb_func *);
7225 +extern int unregister_vroot_grb(vroot_grb_func *);
7226 +
7227 +#endif /* __KERNEL__ */
7228 +
7229 +#define MAX_VROOT_DEFAULT      8
7230 +
7231 +/*
7232 + * IOCTL commands --- we will commandeer 0x56 ('V')
7233 + */
7234 +
7235 +#define VROOT_SET_DEV          0x5600
7236 +#define VROOT_CLR_DEV          0x5601
7237 +
7238 +#endif /* _LINUX_VROOT_H */
7239 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_base.h linux-4.9/include/linux/vs_base.h
7240 --- linux-4.9/include/linux/vs_base.h   1970-01-01 01:00:00.000000000 +0100
7241 +++ linux-4.9/include/linux/vs_base.h   2021-02-24 15:47:45.091076220 +0100
7242 @@ -0,0 +1,10 @@
7243 +#ifndef _VS_BASE_H
7244 +#define _VS_BASE_H
7245 +
7246 +#include "vserver/base.h"
7247 +#include "vserver/check.h"
7248 +#include "vserver/debug.h"
7249 +
7250 +#else
7251 +#warning duplicate inclusion
7252 +#endif
7253 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_context.h linux-4.9/include/linux/vs_context.h
7254 --- linux-4.9/include/linux/vs_context.h        1970-01-01 01:00:00.000000000 +0100
7255 +++ linux-4.9/include/linux/vs_context.h        2021-02-24 15:47:45.091076220 +0100
7256 @@ -0,0 +1,242 @@
7257 +#ifndef _VS_CONTEXT_H
7258 +#define _VS_CONTEXT_H
7259 +
7260 +#include "vserver/base.h"
7261 +#include "vserver/check.h"
7262 +#include "vserver/context.h"
7263 +#include "vserver/history.h"
7264 +#include "vserver/debug.h"
7265 +
7266 +#include <linux/sched.h>
7267 +
7268 +
7269 +#define get_vx_info(i) __get_vx_info(i, __FILE__, __LINE__, __HERE__)
7270 +
7271 +static inline struct vx_info *__get_vx_info(struct vx_info *vxi,
7272 +       const char *_file, int _line, void *_here)
7273 +{
7274 +       if (!vxi)
7275 +               return NULL;
7276 +
7277 +       vxlprintk(VXD_CBIT(xid, 2), "get_vx_info(%p[#%d.%d])",
7278 +               vxi, vxi ? vxi->vx_id : 0,
7279 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7280 +               _file, _line);
7281 +       __vxh_get_vx_info(vxi, _here);
7282 +
7283 +       atomic_inc(&vxi->vx_usecnt);
7284 +       return vxi;
7285 +}
7286 +
7287 +
7288 +extern void free_vx_info(struct vx_info *);
7289 +
7290 +#define put_vx_info(i) __put_vx_info(i, __FILE__, __LINE__, __HERE__)
7291 +
7292 +static inline void __put_vx_info(struct vx_info *vxi,
7293 +       const char *_file, int _line, void *_here)
7294 +{
7295 +       if (!vxi)
7296 +               return;
7297 +
7298 +       vxlprintk(VXD_CBIT(xid, 2), "put_vx_info(%p[#%d.%d])",
7299 +               vxi, vxi ? vxi->vx_id : 0,
7300 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7301 +               _file, _line);
7302 +       __vxh_put_vx_info(vxi, _here);
7303 +
7304 +       if (atomic_dec_and_test(&vxi->vx_usecnt))
7305 +               free_vx_info(vxi);
7306 +}
7307 +
7308 +
7309 +#define init_vx_info(p, i) \
7310 +       __init_vx_info(p, i, __FILE__, __LINE__, __HERE__)
7311 +
7312 +static inline void __init_vx_info(struct vx_info **vxp, struct vx_info *vxi,
7313 +       const char *_file, int _line, void *_here)
7314 +{
7315 +       if (vxi) {
7316 +               vxlprintk(VXD_CBIT(xid, 3),
7317 +                       "init_vx_info(%p[#%d.%d])",
7318 +                       vxi, vxi ? vxi->vx_id : 0,
7319 +                       vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7320 +                       _file, _line);
7321 +               __vxh_init_vx_info(vxi, vxp, _here);
7322 +
7323 +               atomic_inc(&vxi->vx_usecnt);
7324 +       }
7325 +       *vxp = vxi;
7326 +}
7327 +
7328 +
7329 +#define set_vx_info(p, i) \
7330 +       __set_vx_info(p, i, __FILE__, __LINE__, __HERE__)
7331 +
7332 +static inline void __set_vx_info(struct vx_info **vxp, struct vx_info *vxi,
7333 +       const char *_file, int _line, void *_here)
7334 +{
7335 +       struct vx_info *vxo;
7336 +
7337 +       if (!vxi)
7338 +               return;
7339 +
7340 +       vxlprintk(VXD_CBIT(xid, 3), "set_vx_info(%p[#%d.%d])",
7341 +               vxi, vxi ? vxi->vx_id : 0,
7342 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7343 +               _file, _line);
7344 +       __vxh_set_vx_info(vxi, vxp, _here);
7345 +
7346 +       atomic_inc(&vxi->vx_usecnt);
7347 +       vxo = xchg(vxp, vxi);
7348 +       BUG_ON(vxo);
7349 +}
7350 +
7351 +
7352 +#define clr_vx_info(p) __clr_vx_info(p, __FILE__, __LINE__, __HERE__)
7353 +
7354 +static inline void __clr_vx_info(struct vx_info **vxp,
7355 +       const char *_file, int _line, void *_here)
7356 +{
7357 +       struct vx_info *vxo;
7358 +
7359 +       vxo = xchg(vxp, NULL);
7360 +       if (!vxo)
7361 +               return;
7362 +
7363 +       vxlprintk(VXD_CBIT(xid, 3), "clr_vx_info(%p[#%d.%d])",
7364 +               vxo, vxo ? vxo->vx_id : 0,
7365 +               vxo ? atomic_read(&vxo->vx_usecnt) : 0,
7366 +               _file, _line);
7367 +       __vxh_clr_vx_info(vxo, vxp, _here);
7368 +
7369 +       if (atomic_dec_and_test(&vxo->vx_usecnt))
7370 +               free_vx_info(vxo);
7371 +}
7372 +
7373 +
7374 +#define claim_vx_info(v, p) \
7375 +       __claim_vx_info(v, p, __FILE__, __LINE__, __HERE__)
7376 +
7377 +static inline void __claim_vx_info(struct vx_info *vxi,
7378 +       struct task_struct *task,
7379 +       const char *_file, int _line, void *_here)
7380 +{
7381 +       vxlprintk(VXD_CBIT(xid, 3), "claim_vx_info(%p[#%d.%d.%d]) %p",
7382 +               vxi, vxi ? vxi->vx_id : 0,
7383 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7384 +               vxi ? atomic_read(&vxi->vx_tasks) : 0,
7385 +               task, _file, _line);
7386 +       __vxh_claim_vx_info(vxi, task, _here);
7387 +
7388 +       atomic_inc(&vxi->vx_tasks);
7389 +}
7390 +
7391 +
7392 +extern void unhash_vx_info(struct vx_info *);
7393 +
7394 +#define release_vx_info(v, p) \
7395 +       __release_vx_info(v, p, __FILE__, __LINE__, __HERE__)
7396 +
7397 +static inline void __release_vx_info(struct vx_info *vxi,
7398 +       struct task_struct *task,
7399 +       const char *_file, int _line, void *_here)
7400 +{
7401 +       vxlprintk(VXD_CBIT(xid, 3), "release_vx_info(%p[#%d.%d.%d]) %p",
7402 +               vxi, vxi ? vxi->vx_id : 0,
7403 +               vxi ? atomic_read(&vxi->vx_usecnt) : 0,
7404 +               vxi ? atomic_read(&vxi->vx_tasks) : 0,
7405 +               task, _file, _line);
7406 +       __vxh_release_vx_info(vxi, task, _here);
7407 +
7408 +       might_sleep();
7409 +
7410 +       if (atomic_dec_and_test(&vxi->vx_tasks))
7411 +               unhash_vx_info(vxi);
7412 +}
7413 +
7414 +
7415 +#define task_get_vx_info(p) \
7416 +       __task_get_vx_info(p, __FILE__, __LINE__, __HERE__)
7417 +
7418 +static inline struct vx_info *__task_get_vx_info(struct task_struct *p,
7419 +       const char *_file, int _line, void *_here)
7420 +{
7421 +       struct vx_info *vxi;
7422 +
7423 +       task_lock(p);
7424 +       vxlprintk(VXD_CBIT(xid, 5), "task_get_vx_info(%p)",
7425 +               p, _file, _line);
7426 +       vxi = __get_vx_info(p->vx_info, _file, _line, _here);
7427 +       task_unlock(p);
7428 +       return vxi;
7429 +}
7430 +
7431 +
7432 +static inline void __wakeup_vx_info(struct vx_info *vxi)
7433 +{
7434 +       if (waitqueue_active(&vxi->vx_wait))
7435 +               wake_up_interruptible(&vxi->vx_wait);
7436 +}
7437 +
7438 +
7439 +#define enter_vx_info(v, s) __enter_vx_info(v, s, __FILE__, __LINE__)
7440 +
7441 +static inline void __enter_vx_info(struct vx_info *vxi,
7442 +       struct vx_info_save *vxis, const char *_file, int _line)
7443 +{
7444 +       vxlprintk(VXD_CBIT(xid, 5), "enter_vx_info(%p[#%d],%p) %p[#%d,%p]",
7445 +               vxi, vxi ? vxi->vx_id : 0, vxis, current,
7446 +               current->xid, current->vx_info, _file, _line);
7447 +       vxis->vxi = xchg(&current->vx_info, vxi);
7448 +       vxis->xid = current->xid;
7449 +       current->xid = vxi ? vxi->vx_id : 0;
7450 +}
7451 +
7452 +#define leave_vx_info(s) __leave_vx_info(s, __FILE__, __LINE__)
7453 +
7454 +static inline void __leave_vx_info(struct vx_info_save *vxis,
7455 +       const char *_file, int _line)
7456 +{
7457 +       vxlprintk(VXD_CBIT(xid, 5), "leave_vx_info(%p[#%d,%p]) %p[#%d,%p]",
7458 +               vxis, vxis->xid, vxis->vxi, current,
7459 +               current->xid, current->vx_info, _file, _line);
7460 +       (void)xchg(&current->vx_info, vxis->vxi);
7461 +       current->xid = vxis->xid;
7462 +}
7463 +
7464 +
7465 +static inline void __enter_vx_admin(struct vx_info_save *vxis)
7466 +{
7467 +       vxis->vxi = xchg(&current->vx_info, NULL);
7468 +       vxis->xid = xchg(&current->xid, (vxid_t)0);
7469 +}
7470 +
7471 +static inline void __leave_vx_admin(struct vx_info_save *vxis)
7472 +{
7473 +       (void)xchg(&current->xid, vxis->xid);
7474 +       (void)xchg(&current->vx_info, vxis->vxi);
7475 +}
7476 +
7477 +#define task_is_init(p) \
7478 +       __task_is_init(p, __FILE__, __LINE__, __HERE__)
7479 +
7480 +static inline int __task_is_init(struct task_struct *p,
7481 +       const char *_file, int _line, void *_here)
7482 +{
7483 +       int is_init = is_global_init(p);
7484 +
7485 +       task_lock(p);
7486 +       if (p->vx_info)
7487 +               is_init = p->vx_info->vx_initpid == p->pid;
7488 +       task_unlock(p);
7489 +       return is_init;
7490 +}
7491 +
7492 +extern void exit_vx_info(struct task_struct *, int);
7493 +extern void exit_vx_info_early(struct task_struct *, int);
7494 +
7495 +
7496 +#else
7497 +#warning duplicate inclusion
7498 +#endif
7499 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_cowbl.h linux-4.9/include/linux/vs_cowbl.h
7500 --- linux-4.9/include/linux/vs_cowbl.h  1970-01-01 01:00:00.000000000 +0100
7501 +++ linux-4.9/include/linux/vs_cowbl.h  2021-02-24 15:47:45.094409658 +0100
7502 @@ -0,0 +1,48 @@
7503 +#ifndef _VS_COWBL_H
7504 +#define _VS_COWBL_H
7505 +
7506 +#include <linux/fs.h>
7507 +#include <linux/dcache.h>
7508 +#include <linux/namei.h>
7509 +#include <linux/slab.h>
7510 +
7511 +extern struct dentry *cow_break_link(const char *pathname);
7512 +
7513 +static inline int cow_check_and_break(struct path *path)
7514 +{
7515 +       struct inode *inode = path->dentry->d_inode;
7516 +       int error = 0;
7517 +
7518 +       /* do we need this check? */
7519 +       if (IS_RDONLY(inode))
7520 +               return -EROFS;
7521 +
7522 +       if (IS_COW(inode)) {
7523 +               if (IS_COW_LINK(inode)) {
7524 +                       struct dentry *new_dentry, *old_dentry = path->dentry;
7525 +                       char *pp, *buf;
7526 +
7527 +                       buf = kmalloc(PATH_MAX, GFP_KERNEL);
7528 +                       if (!buf) {
7529 +                               return -ENOMEM;
7530 +                       }
7531 +                       pp = d_path(path, buf, PATH_MAX);
7532 +                       new_dentry = cow_break_link(pp);
7533 +                       kfree(buf);
7534 +                       if (!IS_ERR(new_dentry)) {
7535 +                               path->dentry = new_dentry;
7536 +                               dput(old_dentry);
7537 +                       } else
7538 +                               error = PTR_ERR(new_dentry);
7539 +               } else {
7540 +                       inode->i_flags &= ~(S_IXUNLINK | S_IMMUTABLE);
7541 +                       inode->i_ctime = CURRENT_TIME;
7542 +                       mark_inode_dirty(inode);
7543 +               }
7544 +       }
7545 +       return error;
7546 +}
7547 +
7548 +#else
7549 +#warning duplicate inclusion
7550 +#endif
7551 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_cvirt.h linux-4.9/include/linux/vs_cvirt.h
7552 --- linux-4.9/include/linux/vs_cvirt.h  1970-01-01 01:00:00.000000000 +0100
7553 +++ linux-4.9/include/linux/vs_cvirt.h  2021-02-24 15:47:45.094409658 +0100
7554 @@ -0,0 +1,50 @@
7555 +#ifndef _VS_CVIRT_H
7556 +#define _VS_CVIRT_H
7557 +
7558 +#include "vserver/cvirt.h"
7559 +#include "vserver/context.h"
7560 +#include "vserver/base.h"
7561 +#include "vserver/check.h"
7562 +#include "vserver/debug.h"
7563 +
7564 +
7565 +static inline void vx_activate_task(struct task_struct *p)
7566 +{
7567 +       struct vx_info *vxi;
7568 +
7569 +       if ((vxi = p->vx_info)) {
7570 +               vx_update_load(vxi);
7571 +               atomic_inc(&vxi->cvirt.nr_running);
7572 +       }
7573 +}
7574 +
7575 +static inline void vx_deactivate_task(struct task_struct *p)
7576 +{
7577 +       struct vx_info *vxi;
7578 +
7579 +       if ((vxi = p->vx_info)) {
7580 +               vx_update_load(vxi);
7581 +               atomic_dec(&vxi->cvirt.nr_running);
7582 +       }
7583 +}
7584 +
7585 +static inline void vx_uninterruptible_inc(struct task_struct *p)
7586 +{
7587 +       struct vx_info *vxi;
7588 +
7589 +       if ((vxi = p->vx_info))
7590 +               atomic_inc(&vxi->cvirt.nr_uninterruptible);
7591 +}
7592 +
7593 +static inline void vx_uninterruptible_dec(struct task_struct *p)
7594 +{
7595 +       struct vx_info *vxi;
7596 +
7597 +       if ((vxi = p->vx_info))
7598 +               atomic_dec(&vxi->cvirt.nr_uninterruptible);
7599 +}
7600 +
7601 +
7602 +#else
7603 +#warning duplicate inclusion
7604 +#endif
7605 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_device.h linux-4.9/include/linux/vs_device.h
7606 --- linux-4.9/include/linux/vs_device.h 1970-01-01 01:00:00.000000000 +0100
7607 +++ linux-4.9/include/linux/vs_device.h 2021-02-24 15:47:45.094409658 +0100
7608 @@ -0,0 +1,45 @@
7609 +#ifndef _VS_DEVICE_H
7610 +#define _VS_DEVICE_H
7611 +
7612 +#include "vserver/base.h"
7613 +#include "vserver/device.h"
7614 +#include "vserver/debug.h"
7615 +
7616 +
7617 +#ifdef CONFIG_VSERVER_DEVICE
7618 +
7619 +int vs_map_device(struct vx_info *, dev_t, dev_t *, umode_t);
7620 +
7621 +#define vs_device_perm(v, d, m, p) \
7622 +       ((vs_map_device(current_vx_info(), d, NULL, m) & (p)) == (p))
7623 +
7624 +#else
7625 +
7626 +static inline
7627 +int vs_map_device(struct vx_info *vxi,
7628 +       dev_t device, dev_t *target, umode_t mode)
7629 +{
7630 +       if (target)
7631 +               *target = device;
7632 +       return ~0;
7633 +}
7634 +
7635 +#define vs_device_perm(v, d, m, p) ((p) == (p))
7636 +
7637 +#endif
7638 +
7639 +
7640 +#define vs_map_chrdev(d, t, p) \
7641 +       ((vs_map_device(current_vx_info(), d, t, S_IFCHR) & (p)) == (p))
7642 +#define vs_map_blkdev(d, t, p) \
7643 +       ((vs_map_device(current_vx_info(), d, t, S_IFBLK) & (p)) == (p))
7644 +
7645 +#define vs_chrdev_perm(d, p) \
7646 +       vs_device_perm(current_vx_info(), d, S_IFCHR, p)
7647 +#define vs_blkdev_perm(d, p) \
7648 +       vs_device_perm(current_vx_info(), d, S_IFBLK, p)
7649 +
7650 +
7651 +#else
7652 +#warning duplicate inclusion
7653 +#endif
7654 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_dlimit.h linux-4.9/include/linux/vs_dlimit.h
7655 --- linux-4.9/include/linux/vs_dlimit.h 1970-01-01 01:00:00.000000000 +0100
7656 +++ linux-4.9/include/linux/vs_dlimit.h 2021-02-24 15:47:45.094409658 +0100
7657 @@ -0,0 +1,215 @@
7658 +#ifndef _VS_DLIMIT_H
7659 +#define _VS_DLIMIT_H
7660 +
7661 +#include <linux/fs.h>
7662 +
7663 +#include "vserver/dlimit.h"
7664 +#include "vserver/base.h"
7665 +#include "vserver/debug.h"
7666 +
7667 +
7668 +#define get_dl_info(i) __get_dl_info(i, __FILE__, __LINE__)
7669 +
7670 +static inline struct dl_info *__get_dl_info(struct dl_info *dli,
7671 +       const char *_file, int _line)
7672 +{
7673 +       if (!dli)
7674 +               return NULL;
7675 +       vxlprintk(VXD_CBIT(dlim, 4), "get_dl_info(%p[#%d.%d])",
7676 +               dli, dli ? dli->dl_tag : 0,
7677 +               dli ? atomic_read(&dli->dl_usecnt) : 0,
7678 +               _file, _line);
7679 +       atomic_inc(&dli->dl_usecnt);
7680 +       return dli;
7681 +}
7682 +
7683 +
7684 +#define free_dl_info(i) \
7685 +       call_rcu(&(i)->dl_rcu, rcu_free_dl_info)
7686 +
7687 +#define put_dl_info(i) __put_dl_info(i, __FILE__, __LINE__)
7688 +
7689 +static inline void __put_dl_info(struct dl_info *dli,
7690 +       const char *_file, int _line)
7691 +{
7692 +       if (!dli)
7693 +               return;
7694 +       vxlprintk(VXD_CBIT(dlim, 4), "put_dl_info(%p[#%d.%d])",
7695 +               dli, dli ? dli->dl_tag : 0,
7696 +               dli ? atomic_read(&dli->dl_usecnt) : 0,
7697 +               _file, _line);
7698 +       if (atomic_dec_and_test(&dli->dl_usecnt))
7699 +               free_dl_info(dli);
7700 +}
7701 +
7702 +
7703 +#define __dlimit_char(d)       ((d) ? '*' : ' ')
7704 +
7705 +static inline int __dl_alloc_space(struct super_block *sb,
7706 +       vtag_t tag, dlsize_t nr, const char *file, int line)
7707 +{
7708 +       struct dl_info *dli = NULL;
7709 +       int ret = 0;
7710 +
7711 +       if (nr == 0)
7712 +               goto out;
7713 +       dli = locate_dl_info(sb, tag);
7714 +       if (!dli)
7715 +               goto out;
7716 +
7717 +       spin_lock(&dli->dl_lock);
7718 +       ret = (dli->dl_space_used + nr > dli->dl_space_total);
7719 +       if (!ret)
7720 +               dli->dl_space_used += nr;
7721 +       spin_unlock(&dli->dl_lock);
7722 +       put_dl_info(dli);
7723 +out:
7724 +       vxlprintk(VXD_CBIT(dlim, 1),
7725 +               "ALLOC (%p,#%d)%c %lld bytes (%d)",
7726 +               sb, tag, __dlimit_char(dli), (long long)nr,
7727 +               ret, file, line);
7728 +       return ret ? -ENOSPC : 0;
7729 +}
7730 +
7731 +static inline void __dl_free_space(struct super_block *sb,
7732 +       vtag_t tag, dlsize_t nr, const char *_file, int _line)
7733 +{
7734 +       struct dl_info *dli = NULL;
7735 +
7736 +       if (nr == 0)
7737 +               goto out;
7738 +       dli = locate_dl_info(sb, tag);
7739 +       if (!dli)
7740 +               goto out;
7741 +
7742 +       spin_lock(&dli->dl_lock);
7743 +       if (dli->dl_space_used > nr)
7744 +               dli->dl_space_used -= nr;
7745 +       else
7746 +               dli->dl_space_used = 0;
7747 +       spin_unlock(&dli->dl_lock);
7748 +       put_dl_info(dli);
7749 +out:
7750 +       vxlprintk(VXD_CBIT(dlim, 1),
7751 +               "FREE  (%p,#%d)%c %lld bytes",
7752 +               sb, tag, __dlimit_char(dli), (long long)nr,
7753 +               _file, _line);
7754 +}
7755 +
7756 +static inline int __dl_alloc_inode(struct super_block *sb,
7757 +       vtag_t tag, const char *_file, int _line)
7758 +{
7759 +       struct dl_info *dli;
7760 +       int ret = 0;
7761 +
7762 +       dli = locate_dl_info(sb, tag);
7763 +       if (!dli)
7764 +               goto out;
7765 +
7766 +       spin_lock(&dli->dl_lock);
7767 +       dli->dl_inodes_used++;
7768 +       ret = (dli->dl_inodes_used > dli->dl_inodes_total);
7769 +       spin_unlock(&dli->dl_lock);
7770 +       put_dl_info(dli);
7771 +out:
7772 +       vxlprintk(VXD_CBIT(dlim, 0),
7773 +               "ALLOC (%p,#%d)%c inode (%d)",
7774 +               sb, tag, __dlimit_char(dli), ret, _file, _line);
7775 +       return ret ? -ENOSPC : 0;
7776 +}
7777 +
7778 +static inline void __dl_free_inode(struct super_block *sb,
7779 +       vtag_t tag, const char *_file, int _line)
7780 +{
7781 +       struct dl_info *dli;
7782 +
7783 +       dli = locate_dl_info(sb, tag);
7784 +       if (!dli)
7785 +               goto out;
7786 +
7787 +       spin_lock(&dli->dl_lock);
7788 +       if (dli->dl_inodes_used > 1)
7789 +               dli->dl_inodes_used--;
7790 +       else
7791 +               dli->dl_inodes_used = 0;
7792 +       spin_unlock(&dli->dl_lock);
7793 +       put_dl_info(dli);
7794 +out:
7795 +       vxlprintk(VXD_CBIT(dlim, 0),
7796 +               "FREE  (%p,#%d)%c inode",
7797 +               sb, tag, __dlimit_char(dli), _file, _line);
7798 +}
7799 +
7800 +static inline void __dl_adjust_block(struct super_block *sb, vtag_t tag,
7801 +       unsigned long long *free_blocks, unsigned long long *root_blocks,
7802 +       const char *_file, int _line)
7803 +{
7804 +       struct dl_info *dli;
7805 +       uint64_t broot, bfree;
7806 +
7807 +       dli = locate_dl_info(sb, tag);
7808 +       if (!dli)
7809 +               return;
7810 +
7811 +       spin_lock(&dli->dl_lock);
7812 +       broot = (dli->dl_space_total -
7813 +               (dli->dl_space_total >> 10) * dli->dl_nrlmult)
7814 +               >> sb->s_blocksize_bits;
7815 +       bfree = (dli->dl_space_total - dli->dl_space_used)
7816 +                       >> sb->s_blocksize_bits;
7817 +       spin_unlock(&dli->dl_lock);
7818 +
7819 +       vxlprintk(VXD_CBIT(dlim, 2),
7820 +               "ADJUST: %lld,%lld on %lld,%lld [mult=%d]",
7821 +               (long long)bfree, (long long)broot,
7822 +               *free_blocks, *root_blocks, dli->dl_nrlmult,
7823 +               _file, _line);
7824 +       if (free_blocks) {
7825 +               if (*free_blocks > bfree)
7826 +                       *free_blocks = bfree;
7827 +       }
7828 +       if (root_blocks) {
7829 +               if (*root_blocks > broot)
7830 +                       *root_blocks = broot;
7831 +       }
7832 +       put_dl_info(dli);
7833 +}
7834 +
7835 +#define dl_prealloc_space(in, bytes) \
7836 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7837 +               __FILE__, __LINE__ )
7838 +
7839 +#define dl_alloc_space(in, bytes) \
7840 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7841 +               __FILE__, __LINE__ )
7842 +
7843 +#define dl_reserve_space(in, bytes) \
7844 +       __dl_alloc_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7845 +               __FILE__, __LINE__ )
7846 +
7847 +#define dl_claim_space(in, bytes) (0)
7848 +
7849 +#define dl_release_space(in, bytes) \
7850 +       __dl_free_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7851 +               __FILE__, __LINE__ )
7852 +
7853 +#define dl_free_space(in, bytes) \
7854 +       __dl_free_space((in)->i_sb, i_tag_read(in), (dlsize_t)(bytes), \
7855 +               __FILE__, __LINE__ )
7856 +
7857 +
7858 +
7859 +#define dl_alloc_inode(in) \
7860 +       __dl_alloc_inode((in)->i_sb, i_tag_read(in), __FILE__, __LINE__ )
7861 +
7862 +#define dl_free_inode(in) \
7863 +       __dl_free_inode((in)->i_sb, i_tag_read(in), __FILE__, __LINE__ )
7864 +
7865 +
7866 +#define dl_adjust_block(sb, tag, fb, rb) \
7867 +       __dl_adjust_block(sb, tag, fb, rb, __FILE__, __LINE__ )
7868 +
7869 +
7870 +#else
7871 +#warning duplicate inclusion
7872 +#endif
7873 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_inet.h linux-4.9/include/linux/vs_inet.h
7874 --- linux-4.9/include/linux/vs_inet.h   1970-01-01 01:00:00.000000000 +0100
7875 +++ linux-4.9/include/linux/vs_inet.h   2021-02-24 15:47:45.097743096 +0100
7876 @@ -0,0 +1,364 @@
7877 +#ifndef _VS_INET_H
7878 +#define _VS_INET_H
7879 +
7880 +#include "vserver/base.h"
7881 +#include "vserver/network.h"
7882 +#include "vserver/debug.h"
7883 +
7884 +#define IPI_LOOPBACK   htonl(INADDR_LOOPBACK)
7885 +
7886 +#define NXAV4(a)       NIPQUAD((a)->ip[0]), NIPQUAD((a)->ip[1]), \
7887 +                       NIPQUAD((a)->mask), (a)->type
7888 +#define NXAV4_FMT      "[" NIPQUAD_FMT "-" NIPQUAD_FMT "/" NIPQUAD_FMT ":%04x]"
7889 +
7890 +#define NIPQUAD(addr) \
7891 +       ((unsigned char *)&addr)[0], \
7892 +       ((unsigned char *)&addr)[1], \
7893 +       ((unsigned char *)&addr)[2], \
7894 +       ((unsigned char *)&addr)[3]
7895 +
7896 +#define NIPQUAD_FMT "%u.%u.%u.%u"
7897 +
7898 +
7899 +static inline
7900 +int v4_addr_match(struct nx_addr_v4 *nxa, __be32 addr, uint16_t tmask)
7901 +{
7902 +       __be32 ip = nxa->ip[0].s_addr;
7903 +       __be32 mask = nxa->mask.s_addr;
7904 +       __be32 bcast = ip | ~mask;
7905 +       int ret = 0;
7906 +
7907 +       switch (nxa->type & tmask) {
7908 +       case NXA_TYPE_MASK:
7909 +               ret = (ip == (addr & mask));
7910 +               break;
7911 +       case NXA_TYPE_ADDR:
7912 +               ret = 3;
7913 +               if (addr == ip)
7914 +                       break;
7915 +               /* fall through to broadcast */
7916 +       case NXA_MOD_BCAST:
7917 +               ret = ((tmask & NXA_MOD_BCAST) && (addr == bcast));
7918 +               break;
7919 +       case NXA_TYPE_RANGE:
7920 +               ret = ((nxa->ip[0].s_addr <= addr) &&
7921 +                       (nxa->ip[1].s_addr > addr));
7922 +               break;
7923 +       case NXA_TYPE_ANY:
7924 +               ret = 2;
7925 +               break;
7926 +       }
7927 +
7928 +       vxdprintk(VXD_CBIT(net, 0),
7929 +               "v4_addr_match(%p" NXAV4_FMT "," NIPQUAD_FMT ",%04x) = %d",
7930 +               nxa, NXAV4(nxa), NIPQUAD(addr), tmask, ret);
7931 +       return ret;
7932 +}
7933 +
7934 +static inline
7935 +int v4_addr_in_nx_info(struct nx_info *nxi, __be32 addr, uint16_t tmask)
7936 +{
7937 +       struct nx_addr_v4 *nxa;
7938 +       unsigned long irqflags;
7939 +       int ret = 1;
7940 +
7941 +       if (!nxi)
7942 +               goto out;
7943 +
7944 +       ret = 2;
7945 +       /* allow 127.0.0.1 when remapping lback */
7946 +       if ((tmask & NXA_LOOPBACK) &&
7947 +               (addr == IPI_LOOPBACK) &&
7948 +               nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
7949 +               goto out;
7950 +       ret = 3;
7951 +       /* check for lback address */
7952 +       if ((tmask & NXA_MOD_LBACK) &&
7953 +               (nxi->v4_lback.s_addr == addr))
7954 +               goto out;
7955 +       ret = 4;
7956 +       /* check for broadcast address */
7957 +       if ((tmask & NXA_MOD_BCAST) &&
7958 +               (nxi->v4_bcast.s_addr == addr))
7959 +               goto out;
7960 +       ret = 5;
7961 +
7962 +       /* check for v4 addresses */
7963 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
7964 +       for (nxa = &nxi->v4; nxa; nxa = nxa->next)
7965 +               if (v4_addr_match(nxa, addr, tmask))
7966 +                       goto out_unlock;
7967 +       ret = 0;
7968 +out_unlock:
7969 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
7970 +out:
7971 +       vxdprintk(VXD_CBIT(net, 0),
7972 +               "v4_addr_in_nx_info(%p[#%u]," NIPQUAD_FMT ",%04x) = %d",
7973 +               nxi, nxi ? nxi->nx_id : 0, NIPQUAD(addr), tmask, ret);
7974 +       return ret;
7975 +}
7976 +
7977 +static inline
7978 +int v4_nx_addr_match(struct nx_addr_v4 *nxa, struct nx_addr_v4 *addr, uint16_t mask)
7979 +{
7980 +       /* FIXME: needs full range checks */
7981 +       return v4_addr_match(nxa, addr->ip[0].s_addr, mask);
7982 +}
7983 +
7984 +static inline
7985 +int v4_nx_addr_in_nx_info(struct nx_info *nxi, struct nx_addr_v4 *nxa, uint16_t mask)
7986 +{
7987 +       struct nx_addr_v4 *ptr;
7988 +       unsigned long irqflags;
7989 +       int ret = 1;
7990 +
7991 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
7992 +       for (ptr = &nxi->v4; ptr; ptr = ptr->next)
7993 +               if (v4_nx_addr_match(ptr, nxa, mask))
7994 +                       goto out_unlock;
7995 +       ret = 0;
7996 +out_unlock:
7997 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
7998 +       return ret;
7999 +}
8000 +
8001 +#include <net/inet_sock.h>
8002 +
8003 +/*
8004 + *     Check if a given address matches for a socket
8005 + *
8006 + *     nxi:            the socket's nx_info if any
8007 + *     addr:           to be verified address
8008 + */
8009 +static inline
8010 +int v4_sock_addr_match (
8011 +       struct nx_info *nxi,
8012 +       struct inet_sock *inet,
8013 +       __be32 addr)
8014 +{
8015 +       __be32 saddr = inet->inet_rcv_saddr;
8016 +       __be32 bcast = nxi ? nxi->v4_bcast.s_addr : INADDR_BROADCAST;
8017 +
8018 +       if (addr && (saddr == addr || bcast == addr))
8019 +               return 1;
8020 +       if (!saddr)
8021 +               return v4_addr_in_nx_info(nxi, addr, NXA_MASK_BIND);
8022 +       return 0;
8023 +}
8024 +
8025 +
8026 +/* inet related checks and helpers */
8027 +
8028 +
8029 +struct in_ifaddr;
8030 +struct net_device;
8031 +struct sock;
8032 +
8033 +#ifdef CONFIG_INET
8034 +
8035 +#include <linux/netdevice.h>
8036 +#include <linux/inetdevice.h>
8037 +#include <net/inet_sock.h>
8038 +#include <net/inet_timewait_sock.h>
8039 +
8040 +
8041 +int dev_in_nx_info(struct net_device *, struct nx_info *);
8042 +int v4_dev_in_nx_info(struct net_device *, struct nx_info *);
8043 +int nx_v4_addr_conflict(struct nx_info *, struct nx_info *);
8044 +
8045 +
8046 +/*
8047 + *     check if address is covered by socket
8048 + *
8049 + *     sk:     the socket to check against
8050 + *     addr:   the address in question (must be != 0)
8051 + */
8052 +
8053 +static inline
8054 +int __v4_addr_match_socket(const struct sock *sk, struct nx_addr_v4 *nxa)
8055 +{
8056 +       struct nx_info *nxi = sk->sk_nx_info;
8057 +       __be32 saddr = sk->sk_rcv_saddr;
8058 +
8059 +       vxdprintk(VXD_CBIT(net, 5),
8060 +               "__v4_addr_in_socket(%p," NXAV4_FMT ") %p:" NIPQUAD_FMT " %p;%lx",
8061 +               sk, NXAV4(nxa), nxi, NIPQUAD(saddr), sk->sk_socket,
8062 +               (sk->sk_socket?sk->sk_socket->flags:0));
8063 +
8064 +       if (saddr) {            /* direct address match */
8065 +               return v4_addr_match(nxa, saddr, -1);
8066 +       } else if (nxi) {       /* match against nx_info */
8067 +               return v4_nx_addr_in_nx_info(nxi, nxa, -1);
8068 +       } else {                /* unrestricted any socket */
8069 +               return 1;
8070 +       }
8071 +}
8072 +
8073 +
8074 +
8075 +static inline
8076 +int nx_dev_visible(struct nx_info *nxi, struct net_device *dev)
8077 +{
8078 +       vxdprintk(VXD_CBIT(net, 1),
8079 +               "nx_dev_visible(%p[#%u],%p " VS_Q("%s") ") %d",
8080 +               nxi, nxi ? nxi->nx_id : 0, dev, dev->name,
8081 +               nxi ? dev_in_nx_info(dev, nxi) : 0);
8082 +
8083 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8084 +               return 1;
8085 +       if (dev_in_nx_info(dev, nxi))
8086 +               return 1;
8087 +       return 0;
8088 +}
8089 +
8090 +
8091 +static inline
8092 +int v4_ifa_in_nx_info(struct in_ifaddr *ifa, struct nx_info *nxi)
8093 +{
8094 +       if (!nxi)
8095 +               return 1;
8096 +       if (!ifa)
8097 +               return 0;
8098 +       return v4_addr_in_nx_info(nxi, ifa->ifa_local, NXA_MASK_SHOW);
8099 +}
8100 +
8101 +static inline
8102 +int nx_v4_ifa_visible(struct nx_info *nxi, struct in_ifaddr *ifa)
8103 +{
8104 +       vxdprintk(VXD_CBIT(net, 1), "nx_v4_ifa_visible(%p[#%u],%p) %d",
8105 +               nxi, nxi ? nxi->nx_id : 0, ifa,
8106 +               nxi ? v4_ifa_in_nx_info(ifa, nxi) : 0);
8107 +
8108 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8109 +               return 1;
8110 +       if (v4_ifa_in_nx_info(ifa, nxi))
8111 +               return 1;
8112 +       return 0;
8113 +}
8114 +
8115 +
8116 +struct nx_v4_sock_addr {
8117 +       __be32 saddr;   /* Address used for validation */
8118 +       __be32 baddr;   /* Address used for socket bind */
8119 +};
8120 +
8121 +static inline
8122 +int v4_map_sock_addr(struct inet_sock *inet, struct sockaddr_in *addr,
8123 +       struct nx_v4_sock_addr *nsa)
8124 +{
8125 +       struct sock *sk = &inet->sk;
8126 +       struct nx_info *nxi = sk->sk_nx_info;
8127 +       __be32 saddr = addr->sin_addr.s_addr;
8128 +       __be32 baddr = saddr;
8129 +
8130 +       vxdprintk(VXD_CBIT(net, 3),
8131 +               "inet_bind(%p)* %p,%p;%lx " NIPQUAD_FMT,
8132 +               sk, sk->sk_nx_info, sk->sk_socket,
8133 +               (sk->sk_socket ? sk->sk_socket->flags : 0),
8134 +               NIPQUAD(saddr));
8135 +
8136 +       if (nxi) {
8137 +               if (saddr == INADDR_ANY) {
8138 +                       if (nx_info_flags(nxi, NXF_SINGLE_IP, 0))
8139 +                               baddr = nxi->v4.ip[0].s_addr;
8140 +               } else if (saddr == IPI_LOOPBACK) {
8141 +                       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
8142 +                               baddr = nxi->v4_lback.s_addr;
8143 +               } else if (!ipv4_is_multicast(saddr) ||
8144 +                       !nx_info_ncaps(nxi, NXC_MULTICAST)) {
8145 +                       /* normal address bind */
8146 +                       if (!v4_addr_in_nx_info(nxi, saddr, NXA_MASK_BIND))
8147 +                               return -EADDRNOTAVAIL;
8148 +               }
8149 +       }
8150 +
8151 +       vxdprintk(VXD_CBIT(net, 3),
8152 +               "inet_bind(%p) " NIPQUAD_FMT ", " NIPQUAD_FMT,
8153 +               sk, NIPQUAD(saddr), NIPQUAD(baddr));
8154 +
8155 +       nsa->saddr = saddr;
8156 +       nsa->baddr = baddr;
8157 +       return 0;
8158 +}
8159 +
8160 +static inline
8161 +void v4_set_sock_addr(struct inet_sock *inet, struct nx_v4_sock_addr *nsa)
8162 +{
8163 +       inet->inet_saddr = nsa->baddr;
8164 +       inet->inet_rcv_saddr = nsa->baddr;
8165 +}
8166 +
8167 +
8168 +/*
8169 + *      helper to simplify inet_lookup_listener
8170 + *
8171 + *      nxi:   the socket's nx_info if any
8172 + *      addr:  to be verified address
8173 + *      saddr: socket address
8174 + */
8175 +static inline int v4_inet_addr_match (
8176 +       struct nx_info *nxi,
8177 +       __be32 addr,
8178 +       __be32 saddr)
8179 +{
8180 +       if (addr && (saddr == addr))
8181 +               return 1;
8182 +       if (!saddr)
8183 +               return nxi ? v4_addr_in_nx_info(nxi, addr, NXA_MASK_BIND) : 1;
8184 +       return 0;
8185 +}
8186 +
8187 +static inline __be32 nx_map_sock_lback(struct nx_info *nxi, __be32 addr)
8188 +{
8189 +       if (nx_info_flags(nxi, NXF_HIDE_LBACK, 0) &&
8190 +               (addr == nxi->v4_lback.s_addr))
8191 +               return IPI_LOOPBACK;
8192 +       return addr;
8193 +}
8194 +
8195 +static inline
8196 +int nx_info_has_v4(struct nx_info *nxi)
8197 +{
8198 +       if (!nxi)
8199 +               return 1;
8200 +       if (NX_IPV4(nxi))
8201 +               return 1;
8202 +       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0))
8203 +               return 1;
8204 +       return 0;
8205 +}
8206 +
8207 +#else /* CONFIG_INET */
8208 +
8209 +static inline
8210 +int nx_dev_visible(struct nx_info *n, struct net_device *d)
8211 +{
8212 +       return 1;
8213 +}
8214 +
8215 +static inline
8216 +int nx_v4_addr_conflict(struct nx_info *n, uint32_t a, const struct sock *s)
8217 +{
8218 +       return 1;
8219 +}
8220 +
8221 +static inline
8222 +int v4_ifa_in_nx_info(struct in_ifaddr *a, struct nx_info *n)
8223 +{
8224 +       return 1;
8225 +}
8226 +
8227 +static inline
8228 +int nx_info_has_v4(struct nx_info *nxi)
8229 +{
8230 +       return 0;
8231 +}
8232 +
8233 +#endif /* CONFIG_INET */
8234 +
8235 +#define current_nx_info_has_v4() \
8236 +       nx_info_has_v4(current_nx_info())
8237 +
8238 +#else
8239 +// #warning duplicate inclusion
8240 +#endif
8241 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_inet6.h linux-4.9/include/linux/vs_inet6.h
8242 --- linux-4.9/include/linux/vs_inet6.h  1970-01-01 01:00:00.000000000 +0100
8243 +++ linux-4.9/include/linux/vs_inet6.h  2021-02-24 15:47:45.097743096 +0100
8244 @@ -0,0 +1,264 @@
8245 +#ifndef _VS_INET6_H
8246 +#define _VS_INET6_H
8247 +
8248 +#include "vserver/base.h"
8249 +#include "vserver/network.h"
8250 +#include "vserver/debug.h"
8251 +
8252 +#include <net/ipv6.h>
8253 +
8254 +#define NXAV6(a)       &(a)->ip, &(a)->mask, (a)->prefix, (a)->type
8255 +#define NXAV6_FMT      "[%pI6/%pI6/%d:%04x]"
8256 +
8257 +
8258 +#ifdef CONFIG_IPV6
8259 +
8260 +static inline
8261 +int v6_addr_match(struct nx_addr_v6 *nxa,
8262 +       const struct in6_addr *addr, uint16_t mask)
8263 +{
8264 +       int ret = 0;
8265 +
8266 +       switch (nxa->type & mask) {
8267 +       case NXA_TYPE_MASK:
8268 +               ret = ipv6_masked_addr_cmp(&nxa->ip, &nxa->mask, addr);
8269 +               break;
8270 +       case NXA_TYPE_ADDR:
8271 +               ret = ipv6_addr_equal(&nxa->ip, addr);
8272 +               break;
8273 +       case NXA_TYPE_ANY:
8274 +               ret = 1;
8275 +               break;
8276 +       }
8277 +       vxdprintk(VXD_CBIT(net, 0),
8278 +               "v6_addr_match(%p" NXAV6_FMT ",%pI6,%04x) = %d",
8279 +               nxa, NXAV6(nxa), addr, mask, ret);
8280 +       return ret;
8281 +}
8282 +
8283 +static inline
8284 +int v6_addr_in_nx_info(struct nx_info *nxi,
8285 +       const struct in6_addr *addr, uint16_t mask)
8286 +{
8287 +       struct nx_addr_v6 *nxa;
8288 +       unsigned long irqflags;
8289 +       int ret = 1;
8290 +
8291 +       if (!nxi)
8292 +               goto out;
8293 +
8294 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8295 +       for (nxa = &nxi->v6; nxa; nxa = nxa->next)
8296 +               if (v6_addr_match(nxa, addr, mask))
8297 +                       goto out_unlock;
8298 +       ret = 0;
8299 +out_unlock:
8300 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8301 +out:
8302 +       vxdprintk(VXD_CBIT(net, 0),
8303 +               "v6_addr_in_nx_info(%p[#%u],%pI6,%04x) = %d",
8304 +               nxi, nxi ? nxi->nx_id : 0, addr, mask, ret);
8305 +       return ret;
8306 +}
8307 +
8308 +static inline
8309 +int v6_nx_addr_match(struct nx_addr_v6 *nxa, struct nx_addr_v6 *addr, uint16_t mask)
8310 +{
8311 +       /* FIXME: needs full range checks */
8312 +       return v6_addr_match(nxa, &addr->ip, mask);
8313 +}
8314 +
8315 +static inline
8316 +int v6_nx_addr_in_nx_info(struct nx_info *nxi, struct nx_addr_v6 *nxa, uint16_t mask)
8317 +{
8318 +       struct nx_addr_v6 *ptr;
8319 +       unsigned long irqflags;
8320 +       int ret = 1;
8321 +
8322 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
8323 +       for (ptr = &nxi->v6; ptr; ptr = ptr->next)
8324 +               if (v6_nx_addr_match(ptr, nxa, mask))
8325 +                       goto out_unlock;
8326 +       ret = 0;
8327 +out_unlock:
8328 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
8329 +       return ret;
8330 +}
8331 +
8332 +
8333 +/*
8334 + *     Check if a given address matches for a socket
8335 + *
8336 + *     nxi:            the socket's nx_info if any
8337 + *     addr:           to be verified address
8338 + */
8339 +static inline
8340 +int v6_sock_addr_match (
8341 +       struct nx_info *nxi,
8342 +       struct inet_sock *inet,
8343 +       struct in6_addr *addr)
8344 +{
8345 +       struct sock *sk = &inet->sk;
8346 +       const struct in6_addr *saddr = inet6_rcv_saddr(sk);
8347 +
8348 +       if (!ipv6_addr_any(addr) &&
8349 +               ipv6_addr_equal(saddr, addr))
8350 +               return 1;
8351 +       if (ipv6_addr_any(saddr))
8352 +               return v6_addr_in_nx_info(nxi, addr, -1);
8353 +       return 0;
8354 +}
8355 +
8356 +/*
8357 + *     check if address is covered by socket
8358 + *
8359 + *     sk:     the socket to check against
8360 + *     addr:   the address in question (must be != 0)
8361 + */
8362 +
8363 +static inline
8364 +int __v6_addr_match_socket(const struct sock *sk, struct nx_addr_v6 *nxa)
8365 +{
8366 +       struct nx_info *nxi = sk->sk_nx_info;
8367 +       const struct in6_addr *saddr = inet6_rcv_saddr(sk);
8368 +
8369 +       vxdprintk(VXD_CBIT(net, 5),
8370 +               "__v6_addr_in_socket(%p," NXAV6_FMT ") %p:%pI6 %p;%lx",
8371 +               sk, NXAV6(nxa), nxi, saddr, sk->sk_socket,
8372 +               (sk->sk_socket?sk->sk_socket->flags:0));
8373 +
8374 +       if (!ipv6_addr_any(saddr)) {    /* direct address match */
8375 +               return v6_addr_match(nxa, saddr, -1);
8376 +       } else if (nxi) {               /* match against nx_info */
8377 +               return v6_nx_addr_in_nx_info(nxi, nxa, -1);
8378 +       } else {                        /* unrestricted any socket */
8379 +               return 1;
8380 +       }
8381 +}
8382 +
8383 +
8384 +/* inet related checks and helpers */
8385 +
8386 +
8387 +struct in_ifaddr;
8388 +struct net_device;
8389 +struct sock;
8390 +
8391 +
8392 +#include <linux/netdevice.h>
8393 +#include <linux/inetdevice.h>
8394 +#include <net/inet_timewait_sock.h>
8395 +
8396 +
8397 +int dev_in_nx_info(struct net_device *, struct nx_info *);
8398 +int v6_dev_in_nx_info(struct net_device *, struct nx_info *);
8399 +int nx_v6_addr_conflict(struct nx_info *, struct nx_info *);
8400 +
8401 +
8402 +
8403 +static inline
8404 +int v6_ifa_in_nx_info(struct inet6_ifaddr *ifa, struct nx_info *nxi)
8405 +{
8406 +       if (!nxi)
8407 +               return 1;
8408 +       if (!ifa)
8409 +               return 0;
8410 +       return v6_addr_in_nx_info(nxi, &ifa->addr, -1);
8411 +}
8412 +
8413 +static inline
8414 +int nx_v6_ifa_visible(struct nx_info *nxi, struct inet6_ifaddr *ifa)
8415 +{
8416 +       vxdprintk(VXD_CBIT(net, 1), "nx_v6_ifa_visible(%p[#%u],%p) %d",
8417 +               nxi, nxi ? nxi->nx_id : 0, ifa,
8418 +               nxi ? v6_ifa_in_nx_info(ifa, nxi) : 0);
8419 +
8420 +       if (!nx_info_flags(nxi, NXF_HIDE_NETIF, 0))
8421 +               return 1;
8422 +       if (v6_ifa_in_nx_info(ifa, nxi))
8423 +               return 1;
8424 +       return 0;
8425 +}
8426 +
8427 +
8428 +struct nx_v6_sock_addr {
8429 +       struct in6_addr saddr;  /* Address used for validation */
8430 +       struct in6_addr baddr;  /* Address used for socket bind */
8431 +};
8432 +
8433 +static inline
8434 +int v6_map_sock_addr(struct inet_sock *inet, struct sockaddr_in6 *addr,
8435 +       struct nx_v6_sock_addr *nsa)
8436 +{
8437 +       // struct sock *sk = &inet->sk;
8438 +       // struct nx_info *nxi = sk->sk_nx_info;
8439 +       struct in6_addr saddr = addr->sin6_addr;
8440 +       struct in6_addr baddr = saddr;
8441 +
8442 +       nsa->saddr = saddr;
8443 +       nsa->baddr = baddr;
8444 +       return 0;
8445 +}
8446 +
8447 +static inline
8448 +void v6_set_sock_addr(struct inet_sock *inet, struct nx_v6_sock_addr *nsa)
8449 +{
8450 +       // struct sock *sk = &inet->sk;
8451 +       // struct in6_addr *saddr = inet6_rcv_saddr(sk);
8452 +
8453 +       // *saddr = nsa->baddr;
8454 +       // inet->inet_saddr = nsa->baddr;
8455 +}
8456 +
8457 +static inline
8458 +int nx_info_has_v6(struct nx_info *nxi)
8459 +{
8460 +       if (!nxi)
8461 +               return 1;
8462 +       if (NX_IPV6(nxi))
8463 +               return 1;
8464 +       return 0;
8465 +}
8466 +
8467 +#else /* CONFIG_IPV6 */
8468 +
8469 +static inline
8470 +int nx_v6_dev_visible(struct nx_info *n, struct net_device *d)
8471 +{
8472 +       return 1;
8473 +}
8474 +
8475 +
8476 +static inline
8477 +int nx_v6_addr_conflict(struct nx_info *n, uint32_t a, const struct sock *s)
8478 +{
8479 +       return 1;
8480 +}
8481 +
8482 +static inline
8483 +int v6_ifa_in_nx_info(struct in_ifaddr *a, struct nx_info *n)
8484 +{
8485 +       return 1;
8486 +}
8487 +
8488 +static inline
8489 +int nx_info_has_v6(struct nx_info *nxi)
8490 +{
8491 +       return 0;
8492 +}
8493 +
8494 +static inline
8495 +int v6_addr_in_nx_info(struct nx_info *nxi,
8496 +       const struct in6_addr *addr, uint16_t mask)
8497 +{
8498 +       return 0;
8499 +}
8500 +
8501 +#endif /* CONFIG_IPV6 */
8502 +
8503 +#define current_nx_info_has_v6() \
8504 +       nx_info_has_v6(current_nx_info())
8505 +
8506 +#else
8507 +#warning duplicate inclusion
8508 +#endif
8509 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_limit.h linux-4.9/include/linux/vs_limit.h
8510 --- linux-4.9/include/linux/vs_limit.h  1970-01-01 01:00:00.000000000 +0100
8511 +++ linux-4.9/include/linux/vs_limit.h  2021-02-24 15:47:45.101076533 +0100
8512 @@ -0,0 +1,140 @@
8513 +#ifndef _VS_LIMIT_H
8514 +#define _VS_LIMIT_H
8515 +
8516 +#include "vserver/limit.h"
8517 +#include "vserver/base.h"
8518 +#include "vserver/context.h"
8519 +#include "vserver/debug.h"
8520 +#include "vserver/context.h"
8521 +#include "vserver/limit_int.h"
8522 +
8523 +
8524 +#define vx_acc_cres(v, d, p, r) \
8525 +       __vx_acc_cres(v, r, d, p, __FILE__, __LINE__)
8526 +
8527 +#define vx_acc_cres_cond(x, d, p, r) \
8528 +       __vx_acc_cres(((x) == vx_current_xid()) ? current_vx_info() : 0, \
8529 +       r, d, p, __FILE__, __LINE__)
8530 +
8531 +
8532 +#define vx_add_cres(v, a, p, r) \
8533 +       __vx_add_cres(v, r, a, p, __FILE__, __LINE__)
8534 +#define vx_sub_cres(v, a, p, r)                vx_add_cres(v, -(a), p, r)
8535 +
8536 +#define vx_add_cres_cond(x, a, p, r) \
8537 +       __vx_add_cres(((x) == vx_current_xid()) ? current_vx_info() : 0, \
8538 +       r, a, p, __FILE__, __LINE__)
8539 +#define vx_sub_cres_cond(x, a, p, r)   vx_add_cres_cond(x, -(a), p, r)
8540 +
8541 +
8542 +/* process and file limits */
8543 +
8544 +#define vx_nproc_inc(p) \
8545 +       vx_acc_cres((p)->vx_info, 1, p, RLIMIT_NPROC)
8546 +
8547 +#define vx_nproc_dec(p) \
8548 +       vx_acc_cres((p)->vx_info,-1, p, RLIMIT_NPROC)
8549 +
8550 +#define vx_files_inc(f) \
8551 +       vx_acc_cres_cond((f)->f_xid, 1, f, RLIMIT_NOFILE)
8552 +
8553 +#define vx_files_dec(f) \
8554 +       vx_acc_cres_cond((f)->f_xid,-1, f, RLIMIT_NOFILE)
8555 +
8556 +#define vx_locks_inc(l) \
8557 +       vx_acc_cres_cond((l)->fl_xid, 1, l, RLIMIT_LOCKS)
8558 +
8559 +#define vx_locks_dec(l) \
8560 +       vx_acc_cres_cond((l)->fl_xid,-1, l, RLIMIT_LOCKS)
8561 +
8562 +#define vx_openfd_inc(f) \
8563 +       vx_acc_cres(current_vx_info(), 1, (void *)(long)(f), VLIMIT_OPENFD)
8564 +
8565 +#define vx_openfd_dec(f) \
8566 +       vx_acc_cres(current_vx_info(),-1, (void *)(long)(f), VLIMIT_OPENFD)
8567 +
8568 +
8569 +#define vx_cres_avail(v, n, r) \
8570 +       __vx_cres_avail(v, r, n, __FILE__, __LINE__)
8571 +
8572 +
8573 +#define vx_nproc_avail(n) \
8574 +       vx_cres_avail(current_vx_info(), n, RLIMIT_NPROC)
8575 +
8576 +#define vx_files_avail(n) \
8577 +       vx_cres_avail(current_vx_info(), n, RLIMIT_NOFILE)
8578 +
8579 +#define vx_locks_avail(n) \
8580 +       vx_cres_avail(current_vx_info(), n, RLIMIT_LOCKS)
8581 +
8582 +#define vx_openfd_avail(n) \
8583 +       vx_cres_avail(current_vx_info(), n, VLIMIT_OPENFD)
8584 +
8585 +
8586 +/* dentry limits */
8587 +
8588 +#define vx_dentry_inc(d) do {                                          \
8589 +       if (d_count(d) == 1)                                            \
8590 +               vx_acc_cres(current_vx_info(), 1, d, VLIMIT_DENTRY);    \
8591 +       } while (0)
8592 +
8593 +#define vx_dentry_dec(d) do {                                          \
8594 +       if (d_count(d) == 0)                                            \
8595 +               vx_acc_cres(current_vx_info(),-1, d, VLIMIT_DENTRY);    \
8596 +       } while (0)
8597 +
8598 +#define vx_dentry_avail(n) \
8599 +       vx_cres_avail(current_vx_info(), n, VLIMIT_DENTRY)
8600 +
8601 +
8602 +/* socket limits */
8603 +
8604 +#define vx_sock_inc(s) \
8605 +       vx_acc_cres((s)->sk_vx_info, 1, s, VLIMIT_NSOCK)
8606 +
8607 +#define vx_sock_dec(s) \
8608 +       vx_acc_cres((s)->sk_vx_info,-1, s, VLIMIT_NSOCK)
8609 +
8610 +#define vx_sock_avail(n) \
8611 +       vx_cres_avail(current_vx_info(), n, VLIMIT_NSOCK)
8612 +
8613 +
8614 +/* ipc resource limits */
8615 +
8616 +#define vx_ipcmsg_add(v, u, a) \
8617 +       vx_add_cres(v, a, u, RLIMIT_MSGQUEUE)
8618 +
8619 +#define vx_ipcmsg_sub(v, u, a) \
8620 +       vx_sub_cres(v, a, u, RLIMIT_MSGQUEUE)
8621 +
8622 +#define vx_ipcmsg_avail(v, a) \
8623 +       vx_cres_avail(v, a, RLIMIT_MSGQUEUE)
8624 +
8625 +
8626 +#define vx_ipcshm_add(v, k, a) \
8627 +       vx_add_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
8628 +
8629 +#define vx_ipcshm_sub(v, k, a) \
8630 +       vx_sub_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
8631 +
8632 +#define vx_ipcshm_avail(v, a) \
8633 +       vx_cres_avail(v, a, VLIMIT_SHMEM)
8634 +
8635 +
8636 +#define vx_semary_inc(a) \
8637 +       vx_acc_cres(current_vx_info(), 1, a, VLIMIT_SEMARY)
8638 +
8639 +#define vx_semary_dec(a) \
8640 +       vx_acc_cres(current_vx_info(), -1, a, VLIMIT_SEMARY)
8641 +
8642 +
8643 +#define vx_nsems_add(a,n) \
8644 +       vx_add_cres(current_vx_info(), n, a, VLIMIT_NSEMS)
8645 +
8646 +#define vx_nsems_sub(a,n) \
8647 +       vx_sub_cres(current_vx_info(), n, a, VLIMIT_NSEMS)
8648 +
8649 +
8650 +#else
8651 +#warning duplicate inclusion
8652 +#endif
8653 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_network.h linux-4.9/include/linux/vs_network.h
8654 --- linux-4.9/include/linux/vs_network.h        1970-01-01 01:00:00.000000000 +0100
8655 +++ linux-4.9/include/linux/vs_network.h        2021-02-24 15:47:45.101076533 +0100
8656 @@ -0,0 +1,169 @@
8657 +#ifndef _NX_VS_NETWORK_H
8658 +#define _NX_VS_NETWORK_H
8659 +
8660 +#include "vserver/context.h"
8661 +#include "vserver/network.h"
8662 +#include "vserver/base.h"
8663 +#include "vserver/check.h"
8664 +#include "vserver/debug.h"
8665 +
8666 +#include <linux/sched.h>
8667 +
8668 +
8669 +#define get_nx_info(i) __get_nx_info(i, __FILE__, __LINE__)
8670 +
8671 +static inline struct nx_info *__get_nx_info(struct nx_info *nxi,
8672 +       const char *_file, int _line)
8673 +{
8674 +       if (!nxi)
8675 +               return NULL;
8676 +
8677 +       vxlprintk(VXD_CBIT(nid, 2), "get_nx_info(%p[#%d.%d])",
8678 +               nxi, nxi ? nxi->nx_id : 0,
8679 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8680 +               _file, _line);
8681 +
8682 +       atomic_inc(&nxi->nx_usecnt);
8683 +       return nxi;
8684 +}
8685 +
8686 +
8687 +extern void free_nx_info(struct nx_info *);
8688 +
8689 +#define put_nx_info(i) __put_nx_info(i, __FILE__, __LINE__)
8690 +
8691 +static inline void __put_nx_info(struct nx_info *nxi, const char *_file, int _line)
8692 +{
8693 +       if (!nxi)
8694 +               return;
8695 +
8696 +       vxlprintk(VXD_CBIT(nid, 2), "put_nx_info(%p[#%d.%d])",
8697 +               nxi, nxi ? nxi->nx_id : 0,
8698 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8699 +               _file, _line);
8700 +
8701 +       if (atomic_dec_and_test(&nxi->nx_usecnt))
8702 +               free_nx_info(nxi);
8703 +}
8704 +
8705 +
8706 +#define init_nx_info(p, i) __init_nx_info(p, i, __FILE__, __LINE__)
8707 +
8708 +static inline void __init_nx_info(struct nx_info **nxp, struct nx_info *nxi,
8709 +               const char *_file, int _line)
8710 +{
8711 +       if (nxi) {
8712 +               vxlprintk(VXD_CBIT(nid, 3),
8713 +                       "init_nx_info(%p[#%d.%d])",
8714 +                       nxi, nxi ? nxi->nx_id : 0,
8715 +                       nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8716 +                       _file, _line);
8717 +
8718 +               atomic_inc(&nxi->nx_usecnt);
8719 +       }
8720 +       *nxp = nxi;
8721 +}
8722 +
8723 +
8724 +#define set_nx_info(p, i) __set_nx_info(p, i, __FILE__, __LINE__)
8725 +
8726 +static inline void __set_nx_info(struct nx_info **nxp, struct nx_info *nxi,
8727 +       const char *_file, int _line)
8728 +{
8729 +       struct nx_info *nxo;
8730 +
8731 +       if (!nxi)
8732 +               return;
8733 +
8734 +       vxlprintk(VXD_CBIT(nid, 3), "set_nx_info(%p[#%d.%d])",
8735 +               nxi, nxi ? nxi->nx_id : 0,
8736 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8737 +               _file, _line);
8738 +
8739 +       atomic_inc(&nxi->nx_usecnt);
8740 +       nxo = xchg(nxp, nxi);
8741 +       BUG_ON(nxo);
8742 +}
8743 +
8744 +#define clr_nx_info(p) __clr_nx_info(p, __FILE__, __LINE__)
8745 +
8746 +static inline void __clr_nx_info(struct nx_info **nxp,
8747 +       const char *_file, int _line)
8748 +{
8749 +       struct nx_info *nxo;
8750 +
8751 +       nxo = xchg(nxp, NULL);
8752 +       if (!nxo)
8753 +               return;
8754 +
8755 +       vxlprintk(VXD_CBIT(nid, 3), "clr_nx_info(%p[#%d.%d])",
8756 +               nxo, nxo ? nxo->nx_id : 0,
8757 +               nxo ? atomic_read(&nxo->nx_usecnt) : 0,
8758 +               _file, _line);
8759 +
8760 +       if (atomic_dec_and_test(&nxo->nx_usecnt))
8761 +               free_nx_info(nxo);
8762 +}
8763 +
8764 +
8765 +#define claim_nx_info(v, p) __claim_nx_info(v, p, __FILE__, __LINE__)
8766 +
8767 +static inline void __claim_nx_info(struct nx_info *nxi,
8768 +       struct task_struct *task, const char *_file, int _line)
8769 +{
8770 +       vxlprintk(VXD_CBIT(nid, 3), "claim_nx_info(%p[#%d.%d.%d]) %p",
8771 +               nxi, nxi ? nxi->nx_id : 0,
8772 +               nxi?atomic_read(&nxi->nx_usecnt):0,
8773 +               nxi?atomic_read(&nxi->nx_tasks):0,
8774 +               task, _file, _line);
8775 +
8776 +       atomic_inc(&nxi->nx_tasks);
8777 +}
8778 +
8779 +
8780 +extern void unhash_nx_info(struct nx_info *);
8781 +
8782 +#define release_nx_info(v, p) __release_nx_info(v, p, __FILE__, __LINE__)
8783 +
8784 +static inline void __release_nx_info(struct nx_info *nxi,
8785 +       struct task_struct *task, const char *_file, int _line)
8786 +{
8787 +       vxlprintk(VXD_CBIT(nid, 3), "release_nx_info(%p[#%d.%d.%d]) %p",
8788 +               nxi, nxi ? nxi->nx_id : 0,
8789 +               nxi ? atomic_read(&nxi->nx_usecnt) : 0,
8790 +               nxi ? atomic_read(&nxi->nx_tasks) : 0,
8791 +               task, _file, _line);
8792 +
8793 +       might_sleep();
8794 +
8795 +       if (atomic_dec_and_test(&nxi->nx_tasks))
8796 +               unhash_nx_info(nxi);
8797 +}
8798 +
8799 +
8800 +#define task_get_nx_info(i)    __task_get_nx_info(i, __FILE__, __LINE__)
8801 +
8802 +static __inline__ struct nx_info *__task_get_nx_info(struct task_struct *p,
8803 +       const char *_file, int _line)
8804 +{
8805 +       struct nx_info *nxi;
8806 +
8807 +       task_lock(p);
8808 +       vxlprintk(VXD_CBIT(nid, 5), "task_get_nx_info(%p)",
8809 +               p, _file, _line);
8810 +       nxi = __get_nx_info(p->nx_info, _file, _line);
8811 +       task_unlock(p);
8812 +       return nxi;
8813 +}
8814 +
8815 +
8816 +static inline void exit_nx_info(struct task_struct *p)
8817 +{
8818 +       if (p->nx_info)
8819 +               release_nx_info(p->nx_info, p);
8820 +}
8821 +
8822 +
8823 +#else
8824 +#warning duplicate inclusion
8825 +#endif
8826 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_pid.h linux-4.9/include/linux/vs_pid.h
8827 --- linux-4.9/include/linux/vs_pid.h    1970-01-01 01:00:00.000000000 +0100
8828 +++ linux-4.9/include/linux/vs_pid.h    2021-02-24 15:47:45.101076533 +0100
8829 @@ -0,0 +1,50 @@
8830 +#ifndef _VS_PID_H
8831 +#define _VS_PID_H
8832 +
8833 +#include "vserver/base.h"
8834 +#include "vserver/check.h"
8835 +#include "vserver/context.h"
8836 +#include "vserver/debug.h"
8837 +#include "vserver/pid.h"
8838 +#include <linux/pid_namespace.h>
8839 +
8840 +
8841 +#define VXF_FAKE_INIT  (VXF_INFO_INIT | VXF_STATE_INIT)
8842 +
8843 +static inline
8844 +int vx_proc_task_visible(struct task_struct *task)
8845 +{
8846 +       if ((task->pid == 1) &&
8847 +               !vx_flags(VXF_FAKE_INIT, VXF_FAKE_INIT))
8848 +               /* show a blend through init */
8849 +               goto visible;
8850 +       if (vx_check(vx_task_xid(task), VS_WATCH | VS_IDENT))
8851 +               goto visible;
8852 +       return 0;
8853 +visible:
8854 +       return 1;
8855 +}
8856 +
8857 +#define find_task_by_real_pid(pid) find_task_by_pid_ns(pid, &init_pid_ns)
8858 +
8859 +
8860 +static inline
8861 +struct task_struct *vx_get_proc_task(struct inode *inode, struct pid *pid)
8862 +{
8863 +       struct task_struct *task = get_pid_task(pid, PIDTYPE_PID);
8864 +
8865 +       if (task && !vx_proc_task_visible(task)) {
8866 +               vxdprintk(VXD_CBIT(misc, 6),
8867 +                       "dropping task (get) %p[#%u,%u] for %p[#%u,%u]",
8868 +                       task, task->xid, task->pid,
8869 +                       current, current->xid, current->pid);
8870 +               put_task_struct(task);
8871 +               task = NULL;
8872 +       }
8873 +       return task;
8874 +}
8875 +
8876 +
8877 +#else
8878 +#warning duplicate inclusion
8879 +#endif
8880 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_sched.h linux-4.9/include/linux/vs_sched.h
8881 --- linux-4.9/include/linux/vs_sched.h  1970-01-01 01:00:00.000000000 +0100
8882 +++ linux-4.9/include/linux/vs_sched.h  2021-02-24 15:47:45.101076533 +0100
8883 @@ -0,0 +1,40 @@
8884 +#ifndef _VS_SCHED_H
8885 +#define _VS_SCHED_H
8886 +
8887 +#include "vserver/base.h"
8888 +#include "vserver/context.h"
8889 +#include "vserver/sched.h"
8890 +
8891 +
8892 +#define MAX_PRIO_BIAS           20
8893 +#define MIN_PRIO_BIAS          -20
8894 +
8895 +static inline
8896 +int vx_adjust_prio(struct task_struct *p, int prio, int max_user)
8897 +{
8898 +       struct vx_info *vxi = p->vx_info;
8899 +
8900 +       if (vxi)
8901 +               prio += vx_cpu(vxi, sched_pc).prio_bias;
8902 +       return prio;
8903 +}
8904 +
8905 +static inline void vx_account_user(struct vx_info *vxi,
8906 +       cputime_t cputime, int nice)
8907 +{
8908 +       if (!vxi)
8909 +               return;
8910 +       vx_cpu(vxi, sched_pc).user_ticks += cputime;
8911 +}
8912 +
8913 +static inline void vx_account_system(struct vx_info *vxi,
8914 +       cputime_t cputime, int idle)
8915 +{
8916 +       if (!vxi)
8917 +               return;
8918 +       vx_cpu(vxi, sched_pc).sys_ticks += cputime;
8919 +}
8920 +
8921 +#else
8922 +#warning duplicate inclusion
8923 +#endif
8924 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_socket.h linux-4.9/include/linux/vs_socket.h
8925 --- linux-4.9/include/linux/vs_socket.h 1970-01-01 01:00:00.000000000 +0100
8926 +++ linux-4.9/include/linux/vs_socket.h 2021-02-24 15:47:45.101076533 +0100
8927 @@ -0,0 +1,67 @@
8928 +#ifndef _VS_SOCKET_H
8929 +#define _VS_SOCKET_H
8930 +
8931 +#include "vserver/debug.h"
8932 +#include "vserver/base.h"
8933 +#include "vserver/cacct.h"
8934 +#include "vserver/context.h"
8935 +#include "vserver/tag.h"
8936 +
8937 +
8938 +/* socket accounting */
8939 +
8940 +#include <linux/socket.h>
8941 +
8942 +static inline int vx_sock_type(int family)
8943 +{
8944 +       switch (family) {
8945 +       case PF_UNSPEC:
8946 +               return VXA_SOCK_UNSPEC;
8947 +       case PF_UNIX:
8948 +               return VXA_SOCK_UNIX;
8949 +       case PF_INET:
8950 +               return VXA_SOCK_INET;
8951 +       case PF_INET6:
8952 +               return VXA_SOCK_INET6;
8953 +       case PF_PACKET:
8954 +               return VXA_SOCK_PACKET;
8955 +       default:
8956 +               return VXA_SOCK_OTHER;
8957 +       }
8958 +}
8959 +
8960 +#define vx_acc_sock(v, f, p, s) \
8961 +       __vx_acc_sock(v, f, p, s, __FILE__, __LINE__)
8962 +
8963 +static inline void __vx_acc_sock(struct vx_info *vxi,
8964 +       int family, int pos, int size, char *file, int line)
8965 +{
8966 +       if (vxi) {
8967 +               int type = vx_sock_type(family);
8968 +
8969 +               atomic_long_inc(&vxi->cacct.sock[type][pos].count);
8970 +               atomic_long_add(size, &vxi->cacct.sock[type][pos].total);
8971 +       }
8972 +}
8973 +
8974 +#define vx_sock_recv(sk, s) \
8975 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 0, s)
8976 +#define vx_sock_send(sk, s) \
8977 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 1, s)
8978 +#define vx_sock_fail(sk, s) \
8979 +       vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 2, s)
8980 +
8981 +
8982 +#define sock_vx_init(s) do {           \
8983 +       (s)->sk_xid = 0;                \
8984 +       (s)->sk_vx_info = NULL;         \
8985 +       } while (0)
8986 +
8987 +#define sock_nx_init(s) do {           \
8988 +       (s)->sk_nid = 0;                \
8989 +       (s)->sk_nx_info = NULL;         \
8990 +       } while (0)
8991 +
8992 +#else
8993 +#warning duplicate inclusion
8994 +#endif
8995 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_tag.h linux-4.9/include/linux/vs_tag.h
8996 --- linux-4.9/include/linux/vs_tag.h    1970-01-01 01:00:00.000000000 +0100
8997 +++ linux-4.9/include/linux/vs_tag.h    2021-02-24 15:47:45.101076533 +0100
8998 @@ -0,0 +1,47 @@
8999 +#ifndef _VS_TAG_H
9000 +#define _VS_TAG_H
9001 +
9002 +#include <linux/vserver/tag.h>
9003 +
9004 +/* check conditions */
9005 +
9006 +#define DX_ADMIN       0x0001
9007 +#define DX_WATCH       0x0002
9008 +#define DX_HOSTID      0x0008
9009 +
9010 +#define DX_IDENT       0x0010
9011 +
9012 +#define DX_ARG_MASK    0x0010
9013 +
9014 +
9015 +#define dx_task_tag(t) ((t)->tag)
9016 +
9017 +#define dx_current_tag() dx_task_tag(current)
9018 +
9019 +#define dx_check(c, m) __dx_check(dx_current_tag(), c, m)
9020 +
9021 +#define dx_weak_check(c, m)    ((m) ? dx_check(c, m) : 1)
9022 +
9023 +
9024 +/*
9025 + * check current context for ADMIN/WATCH and
9026 + * optionally against supplied argument
9027 + */
9028 +static inline int __dx_check(vtag_t cid, vtag_t id, unsigned int mode)
9029 +{
9030 +       if (mode & DX_ARG_MASK) {
9031 +               if ((mode & DX_IDENT) && (id == cid))
9032 +                       return 1;
9033 +       }
9034 +       return (((mode & DX_ADMIN) && (cid == 0)) ||
9035 +               ((mode & DX_WATCH) && (cid == 1)) ||
9036 +               ((mode & DX_HOSTID) && (id == 0)));
9037 +}
9038 +
9039 +struct inode;
9040 +int dx_permission(const struct inode *inode, int mask);
9041 +
9042 +
9043 +#else
9044 +#warning duplicate inclusion
9045 +#endif
9046 diff -urNp -x '*.orig' linux-4.9/include/linux/vs_time.h linux-4.9/include/linux/vs_time.h
9047 --- linux-4.9/include/linux/vs_time.h   1970-01-01 01:00:00.000000000 +0100
9048 +++ linux-4.9/include/linux/vs_time.h   2021-02-24 15:47:45.101076533 +0100
9049 @@ -0,0 +1,21 @@
9050 +#ifndef _VS_TIME_H
9051 +#define _VS_TIME_H
9052 +
9053 +
9054 +/* time faking stuff */
9055 +
9056 +#ifdef CONFIG_VSERVER_VTIME
9057 +
9058 +extern void vx_adjust_timespec(struct timespec *ts);
9059 +extern int vx_settimeofday(const struct timespec *ts);
9060 +extern int vx_settimeofday64(const struct timespec64 *ts);
9061 +
9062 +#else
9063 +#define        vx_adjust_timespec(t)   do { } while (0)
9064 +#define        vx_settimeofday(t)      do_settimeofday(t)
9065 +#define        vx_settimeofday64(t)    do_settimeofday64(t)
9066 +#endif
9067 +
9068 +#else
9069 +#warning duplicate inclusion
9070 +#endif
9071 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/base.h linux-4.9/include/linux/vserver/base.h
9072 --- linux-4.9/include/linux/vserver/base.h      1970-01-01 01:00:00.000000000 +0100
9073 +++ linux-4.9/include/linux/vserver/base.h      2021-02-24 15:47:45.094409658 +0100
9074 @@ -0,0 +1,184 @@
9075 +#ifndef _VSERVER_BASE_H
9076 +#define _VSERVER_BASE_H
9077 +
9078 +
9079 +/* context state changes */
9080 +
9081 +enum {
9082 +       VSC_STARTUP = 1,
9083 +       VSC_SHUTDOWN,
9084 +
9085 +       VSC_NETUP,
9086 +       VSC_NETDOWN,
9087 +};
9088 +
9089 +
9090 +
9091 +#define vx_task_xid(t) ((t)->xid)
9092 +
9093 +#define vx_current_xid() vx_task_xid(current)
9094 +
9095 +#define current_vx_info() (current->vx_info)
9096 +
9097 +
9098 +#define nx_task_nid(t) ((t)->nid)
9099 +
9100 +#define nx_current_nid() nx_task_nid(current)
9101 +
9102 +#define current_nx_info() (current->nx_info)
9103 +
9104 +
9105 +/* generic flag merging */
9106 +
9107 +#define vs_check_flags(v, m, f)        (((v) & (m)) ^ (f))
9108 +
9109 +#define vs_mask_flags(v, f, m) (((v) & ~(m)) | ((f) & (m)))
9110 +
9111 +#define vs_mask_mask(v, f, m)  (((v) & ~(m)) | ((v) & (f) & (m)))
9112 +
9113 +#define vs_check_bit(v, n)     ((v) & (1LL << (n)))
9114 +
9115 +
9116 +/* context flags */
9117 +
9118 +#define __vx_flags(v)  ((v) ? (v)->vx_flags : 0)
9119 +
9120 +#define vx_current_flags()     __vx_flags(current_vx_info())
9121 +
9122 +#define vx_info_flags(v, m, f) \
9123 +       vs_check_flags(__vx_flags(v), m, f)
9124 +
9125 +#define task_vx_flags(t, m, f) \
9126 +       ((t) && vx_info_flags((t)->vx_info, m, f))
9127 +
9128 +#define vx_flags(m, f) vx_info_flags(current_vx_info(), m, f)
9129 +
9130 +
9131 +/* context caps */
9132 +
9133 +#define __vx_ccaps(v)  ((v) ? (v)->vx_ccaps : 0)
9134 +
9135 +#define vx_current_ccaps()     __vx_ccaps(current_vx_info())
9136 +
9137 +#define vx_info_ccaps(v, c)    (__vx_ccaps(v) & (c))
9138 +
9139 +#define vx_ccaps(c)    vx_info_ccaps(current_vx_info(), (c))
9140 +
9141 +
9142 +
9143 +/* network flags */
9144 +
9145 +#define __nx_flags(n)  ((n) ? (n)->nx_flags : 0)
9146 +
9147 +#define nx_current_flags()     __nx_flags(current_nx_info())
9148 +
9149 +#define nx_info_flags(n, m, f) \
9150 +       vs_check_flags(__nx_flags(n), m, f)
9151 +
9152 +#define task_nx_flags(t, m, f) \
9153 +       ((t) && nx_info_flags((t)->nx_info, m, f))
9154 +
9155 +#define nx_flags(m, f) nx_info_flags(current_nx_info(), m, f)
9156 +
9157 +
9158 +/* network caps */
9159 +
9160 +#define __nx_ncaps(n)  ((n) ? (n)->nx_ncaps : 0)
9161 +
9162 +#define nx_current_ncaps()     __nx_ncaps(current_nx_info())
9163 +
9164 +#define nx_info_ncaps(n, c)    (__nx_ncaps(n) & (c))
9165 +
9166 +#define nx_ncaps(c)    nx_info_ncaps(current_nx_info(), c)
9167 +
9168 +
9169 +/* context mask capabilities */
9170 +
9171 +#define __vx_mcaps(v)  ((v) ? (v)->vx_ccaps >> 32UL : ~0 )
9172 +
9173 +#define vx_info_mcaps(v, c)    (__vx_mcaps(v) & (c))
9174 +
9175 +#define vx_mcaps(c)    vx_info_mcaps(current_vx_info(), c)
9176 +
9177 +
9178 +/* context bcap mask */
9179 +
9180 +#define __vx_bcaps(v)          ((v)->vx_bcaps)
9181 +
9182 +#define vx_current_bcaps()     __vx_bcaps(current_vx_info())
9183 +
9184 +
9185 +/* mask given bcaps */
9186 +
9187 +#define vx_info_mbcaps(v, c)   ((v) ? cap_intersect(__vx_bcaps(v), c) : c)
9188 +
9189 +#define vx_mbcaps(c)           vx_info_mbcaps(current_vx_info(), c)
9190 +
9191 +
9192 +/* masked cap_bset */
9193 +
9194 +#define vx_info_cap_bset(v)    vx_info_mbcaps(v, current->cap_bset)
9195 +
9196 +#define vx_current_cap_bset()  vx_info_cap_bset(current_vx_info())
9197 +
9198 +#if 0
9199 +#define vx_info_mbcap(v, b) \
9200 +       (!vx_info_flags(v, VXF_STATE_SETUP, 0) ? \
9201 +       vx_info_bcaps(v, b) : (b))
9202 +
9203 +#define task_vx_mbcap(t, b) \
9204 +       vx_info_mbcap((t)->vx_info, (t)->b)
9205 +
9206 +#define vx_mbcap(b)    task_vx_mbcap(current, b)
9207 +#endif
9208 +
9209 +#define vx_cap_raised(v, c, f) cap_raised(vx_info_mbcaps(v, c), f)
9210 +
9211 +#define vx_capable(b, c) (capable(b) || \
9212 +       (cap_raised(current_cap(), b) && vx_ccaps(c)))
9213 +
9214 +#define vx_ns_capable(n, b, c) (ns_capable(n, b) || \
9215 +       (cap_raised(current_cap(), b) && vx_ccaps(c)))
9216 +
9217 +#define nx_capable(b, c) (capable(b) || \
9218 +       (cap_raised(current_cap(), b) && nx_ncaps(c)))
9219 +
9220 +#define nx_ns_capable(n, b, c) (ns_capable(n, b) || \
9221 +       (cap_raised(current_cap(), b) && nx_ncaps(c)))
9222 +
9223 +#define vx_task_initpid(t, n) \
9224 +       ((t)->vx_info && \
9225 +       ((t)->vx_info->vx_initpid == (n)))
9226 +
9227 +#define vx_current_initpid(n)  vx_task_initpid(current, n)
9228 +
9229 +
9230 +/* context unshare mask */
9231 +
9232 +#define __vx_umask(v)          ((v)->vx_umask)
9233 +
9234 +#define vx_current_umask()     __vx_umask(current_vx_info())
9235 +
9236 +#define vx_can_unshare(b, f) (capable(b) || \
9237 +       (cap_raised(current_cap(), b) && \
9238 +       !((f) & ~vx_current_umask())))
9239 +
9240 +#define vx_ns_can_unshare(n, b, f) (ns_capable(n, b) || \
9241 +       (cap_raised(current_cap(), b) && \
9242 +       !((f) & ~vx_current_umask())))
9243 +
9244 +#define __vx_wmask(v)          ((v)->vx_wmask)
9245 +
9246 +#define vx_current_wmask()     __vx_wmask(current_vx_info())
9247 +
9248 +
9249 +#define __vx_state(v)  ((v) ? ((v)->vx_state) : 0)
9250 +
9251 +#define vx_info_state(v, m)    (__vx_state(v) & (m))
9252 +
9253 +
9254 +#define __nx_state(n)  ((n) ? ((n)->nx_state) : 0)
9255 +
9256 +#define nx_info_state(n, m)    (__nx_state(n) & (m))
9257 +
9258 +#endif
9259 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/cacct.h linux-4.9/include/linux/vserver/cacct.h
9260 --- linux-4.9/include/linux/vserver/cacct.h     1970-01-01 01:00:00.000000000 +0100
9261 +++ linux-4.9/include/linux/vserver/cacct.h     2021-02-24 15:47:45.094409658 +0100
9262 @@ -0,0 +1,15 @@
9263 +#ifndef _VSERVER_CACCT_H
9264 +#define _VSERVER_CACCT_H
9265 +
9266 +
9267 +enum sock_acc_field {
9268 +       VXA_SOCK_UNSPEC = 0,
9269 +       VXA_SOCK_UNIX,
9270 +       VXA_SOCK_INET,
9271 +       VXA_SOCK_INET6,
9272 +       VXA_SOCK_PACKET,
9273 +       VXA_SOCK_OTHER,
9274 +       VXA_SOCK_SIZE   /* array size */
9275 +};
9276 +
9277 +#endif /* _VSERVER_CACCT_H */
9278 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/cacct_cmd.h linux-4.9/include/linux/vserver/cacct_cmd.h
9279 --- linux-4.9/include/linux/vserver/cacct_cmd.h 1970-01-01 01:00:00.000000000 +0100
9280 +++ linux-4.9/include/linux/vserver/cacct_cmd.h 2021-02-24 15:47:45.094409658 +0100
9281 @@ -0,0 +1,10 @@
9282 +#ifndef _VSERVER_CACCT_CMD_H
9283 +#define _VSERVER_CACCT_CMD_H
9284 +
9285 +
9286 +#include <linux/compiler.h>
9287 +#include <uapi/vserver/cacct_cmd.h>
9288 +
9289 +extern int vc_sock_stat(struct vx_info *, void __user *);
9290 +
9291 +#endif /* _VSERVER_CACCT_CMD_H */
9292 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/cacct_def.h linux-4.9/include/linux/vserver/cacct_def.h
9293 --- linux-4.9/include/linux/vserver/cacct_def.h 1970-01-01 01:00:00.000000000 +0100
9294 +++ linux-4.9/include/linux/vserver/cacct_def.h 2021-02-24 15:47:45.094409658 +0100
9295 @@ -0,0 +1,43 @@
9296 +#ifndef _VSERVER_CACCT_DEF_H
9297 +#define _VSERVER_CACCT_DEF_H
9298 +
9299 +#include <asm/atomic.h>
9300 +#include <linux/vserver/cacct.h>
9301 +
9302 +
9303 +struct _vx_sock_acc {
9304 +       atomic_long_t count;
9305 +       atomic_long_t total;
9306 +};
9307 +
9308 +/* context sub struct */
9309 +
9310 +struct _vx_cacct {
9311 +       struct _vx_sock_acc sock[VXA_SOCK_SIZE][3];
9312 +       atomic_t slab[8];
9313 +       atomic_t page[6][8];
9314 +};
9315 +
9316 +#ifdef CONFIG_VSERVER_DEBUG
9317 +
9318 +static inline void __dump_vx_cacct(struct _vx_cacct *cacct)
9319 +{
9320 +       int i, j;
9321 +
9322 +       printk("\t_vx_cacct:");
9323 +       for (i = 0; i < 6; i++) {
9324 +               struct _vx_sock_acc *ptr = cacct->sock[i];
9325 +
9326 +               printk("\t [%d] =", i);
9327 +               for (j = 0; j < 3; j++) {
9328 +                       printk(" [%d] = %8lu, %8lu", j,
9329 +                               atomic_long_read(&ptr[j].count),
9330 +                               atomic_long_read(&ptr[j].total));
9331 +               }
9332 +               printk("\n");
9333 +       }
9334 +}
9335 +
9336 +#endif
9337 +
9338 +#endif /* _VSERVER_CACCT_DEF_H */
9339 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/cacct_int.h linux-4.9/include/linux/vserver/cacct_int.h
9340 --- linux-4.9/include/linux/vserver/cacct_int.h 1970-01-01 01:00:00.000000000 +0100
9341 +++ linux-4.9/include/linux/vserver/cacct_int.h 2021-02-24 15:47:45.094409658 +0100
9342 @@ -0,0 +1,17 @@
9343 +#ifndef _VSERVER_CACCT_INT_H
9344 +#define _VSERVER_CACCT_INT_H
9345 +
9346 +static inline
9347 +unsigned long vx_sock_count(struct _vx_cacct *cacct, int type, int pos)
9348 +{
9349 +       return atomic_long_read(&cacct->sock[type][pos].count);
9350 +}
9351 +
9352 +
9353 +static inline
9354 +unsigned long vx_sock_total(struct _vx_cacct *cacct, int type, int pos)
9355 +{
9356 +       return atomic_long_read(&cacct->sock[type][pos].total);
9357 +}
9358 +
9359 +#endif /* _VSERVER_CACCT_INT_H */
9360 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/check.h linux-4.9/include/linux/vserver/check.h
9361 --- linux-4.9/include/linux/vserver/check.h     1970-01-01 01:00:00.000000000 +0100
9362 +++ linux-4.9/include/linux/vserver/check.h     2021-02-24 15:47:45.094409658 +0100
9363 @@ -0,0 +1,89 @@
9364 +#ifndef _VSERVER_CHECK_H
9365 +#define _VSERVER_CHECK_H
9366 +
9367 +
9368 +#define MAX_S_CONTEXT  65535   /* Arbitrary limit */
9369 +
9370 +#ifdef CONFIG_VSERVER_DYNAMIC_IDS
9371 +#define MIN_D_CONTEXT  49152   /* dynamic contexts start here */
9372 +#else
9373 +#define MIN_D_CONTEXT  65536
9374 +#endif
9375 +
9376 +/* check conditions */
9377 +
9378 +#define VS_ADMIN       0x0001
9379 +#define VS_WATCH       0x0002
9380 +#define VS_HIDE                0x0004
9381 +#define VS_HOSTID      0x0008
9382 +
9383 +#define VS_IDENT       0x0010
9384 +#define VS_EQUIV       0x0020
9385 +#define VS_PARENT      0x0040
9386 +#define VS_CHILD       0x0080
9387 +
9388 +#define VS_ARG_MASK    0x00F0
9389 +
9390 +#define VS_DYNAMIC     0x0100
9391 +#define VS_STATIC      0x0200
9392 +
9393 +#define VS_ATR_MASK    0x0F00
9394 +
9395 +#ifdef CONFIG_VSERVER_PRIVACY
9396 +#define VS_ADMIN_P     (0)
9397 +#define VS_WATCH_P     (0)
9398 +#else
9399 +#define VS_ADMIN_P     VS_ADMIN
9400 +#define VS_WATCH_P     VS_WATCH
9401 +#endif
9402 +
9403 +#define VS_HARDIRQ     0x1000
9404 +#define VS_SOFTIRQ     0x2000
9405 +#define VS_IRQ         0x4000
9406 +
9407 +#define VS_IRQ_MASK    0xF000
9408 +
9409 +#include <linux/hardirq.h>
9410 +
9411 +/*
9412 + * check current context for ADMIN/WATCH and
9413 + * optionally against supplied argument
9414 + */
9415 +static inline int __vs_check(int cid, int id, unsigned int mode)
9416 +{
9417 +       if (mode & VS_ARG_MASK) {
9418 +               if ((mode & VS_IDENT) && (id == cid))
9419 +                       return 1;
9420 +       }
9421 +       if (mode & VS_ATR_MASK) {
9422 +               if ((mode & VS_DYNAMIC) &&
9423 +                       (id >= MIN_D_CONTEXT) &&
9424 +                       (id <= MAX_S_CONTEXT))
9425 +                       return 1;
9426 +               if ((mode & VS_STATIC) &&
9427 +                       (id > 1) && (id < MIN_D_CONTEXT))
9428 +                       return 1;
9429 +       }
9430 +       if (mode & VS_IRQ_MASK) {
9431 +               if ((mode & VS_IRQ) && unlikely(in_interrupt()))
9432 +                       return 1;
9433 +               if ((mode & VS_HARDIRQ) && unlikely(in_irq()))
9434 +                       return 1;
9435 +               if ((mode & VS_SOFTIRQ) && unlikely(in_softirq()))
9436 +                       return 1;
9437 +       }
9438 +       return (((mode & VS_ADMIN) && (cid == 0)) ||
9439 +               ((mode & VS_WATCH) && (cid == 1)) ||
9440 +               ((mode & VS_HOSTID) && (id == 0)));
9441 +}
9442 +
9443 +#define vx_check(c, m) __vs_check(vx_current_xid(), c, (m) | VS_IRQ)
9444 +
9445 +#define vx_weak_check(c, m)    ((m) ? vx_check(c, m) : 1)
9446 +
9447 +
9448 +#define nx_check(c, m) __vs_check(nx_current_nid(), c, m)
9449 +
9450 +#define nx_weak_check(c, m)    ((m) ? nx_check(c, m) : 1)
9451 +
9452 +#endif
9453 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/context.h linux-4.9/include/linux/vserver/context.h
9454 --- linux-4.9/include/linux/vserver/context.h   1970-01-01 01:00:00.000000000 +0100
9455 +++ linux-4.9/include/linux/vserver/context.h   2021-02-24 15:47:45.094409658 +0100
9456 @@ -0,0 +1,110 @@
9457 +#ifndef _VSERVER_CONTEXT_H
9458 +#define _VSERVER_CONTEXT_H
9459 +
9460 +
9461 +#include <linux/list.h>
9462 +#include <linux/spinlock.h>
9463 +#include <linux/rcupdate.h>
9464 +#include <uapi/vserver/context.h>
9465 +
9466 +#include "limit_def.h"
9467 +#include "sched_def.h"
9468 +#include "cvirt_def.h"
9469 +#include "cacct_def.h"
9470 +#include "device_def.h"
9471 +
9472 +#define VX_SPACES      2
9473 +
9474 +struct _vx_info_pc {
9475 +       struct _vx_sched_pc sched_pc;
9476 +       struct _vx_cvirt_pc cvirt_pc;
9477 +};
9478 +
9479 +struct _vx_space {
9480 +       unsigned long vx_nsmask;                /* assignment mask */
9481 +       struct nsproxy *vx_nsproxy;             /* private namespaces */
9482 +       struct fs_struct *vx_fs;                /* private namespace fs */
9483 +       const struct cred *vx_cred;             /* task credentials */
9484 +};
9485 +
9486 +struct vx_info {
9487 +       struct hlist_node vx_hlist;             /* linked list of contexts */
9488 +       vxid_t vx_id;                           /* context id */
9489 +       atomic_t vx_usecnt;                     /* usage count */
9490 +       atomic_t vx_tasks;                      /* tasks count */
9491 +       struct vx_info *vx_parent;              /* parent context */
9492 +       int vx_state;                           /* context state */
9493 +
9494 +       struct _vx_space space[VX_SPACES];      /* namespace store */
9495 +
9496 +       uint64_t vx_flags;                      /* context flags */
9497 +       uint64_t vx_ccaps;                      /* context caps (vserver) */
9498 +       uint64_t vx_umask;                      /* unshare mask (guest) */
9499 +       uint64_t vx_wmask;                      /* warn mask (guest) */
9500 +       kernel_cap_t vx_bcaps;                  /* bounding caps (system) */
9501 +
9502 +       struct task_struct *vx_reaper;          /* guest reaper process */
9503 +       pid_t vx_initpid;                       /* PID of guest init */
9504 +       int64_t vx_badness_bias;                /* OOM points bias */
9505 +
9506 +       struct _vx_limit limit;                 /* vserver limits */
9507 +       struct _vx_sched sched;                 /* vserver scheduler */
9508 +       struct _vx_cvirt cvirt;                 /* virtual/bias stuff */
9509 +       struct _vx_cacct cacct;                 /* context accounting */
9510 +
9511 +       struct _vx_device dmap;                 /* default device map targets */
9512 +
9513 +#ifndef CONFIG_SMP
9514 +       struct _vx_info_pc info_pc;             /* per cpu data */
9515 +#else
9516 +       struct _vx_info_pc *ptr_pc;             /* per cpu array */
9517 +#endif
9518 +
9519 +       wait_queue_head_t vx_wait;              /* context exit waitqueue */
9520 +       int reboot_cmd;                         /* last sys_reboot() cmd */
9521 +       int exit_code;                          /* last process exit code */
9522 +
9523 +       char vx_name[65];                       /* vserver name */
9524 +};
9525 +
9526 +#ifndef CONFIG_SMP
9527 +#define        vx_ptr_pc(vxi)          (&(vxi)->info_pc)
9528 +#define        vx_per_cpu(vxi, v, id)  vx_ptr_pc(vxi)->v
9529 +#else
9530 +#define        vx_ptr_pc(vxi)          ((vxi)->ptr_pc)
9531 +#define        vx_per_cpu(vxi, v, id)  per_cpu_ptr(vx_ptr_pc(vxi), id)->v
9532 +#endif
9533 +
9534 +#define        vx_cpu(vxi, v)          vx_per_cpu(vxi, v, smp_processor_id())
9535 +
9536 +
9537 +struct vx_info_save {
9538 +       struct vx_info *vxi;
9539 +       vxid_t xid;
9540 +};
9541 +
9542 +
9543 +/* status flags */
9544 +
9545 +#define VXS_HASHED     0x0001
9546 +#define VXS_PAUSED     0x0010
9547 +#define VXS_SHUTDOWN   0x0100
9548 +#define VXS_HELPER     0x1000
9549 +#define VXS_RELEASED   0x8000
9550 +
9551 +
9552 +extern void claim_vx_info(struct vx_info *, struct task_struct *);
9553 +extern void release_vx_info(struct vx_info *, struct task_struct *);
9554 +
9555 +extern struct vx_info *lookup_vx_info(int);
9556 +extern struct vx_info *lookup_or_create_vx_info(int);
9557 +
9558 +extern int get_xid_list(int, unsigned int *, int);
9559 +extern int xid_is_hashed(vxid_t);
9560 +
9561 +extern int vx_migrate_task(struct task_struct *, struct vx_info *, int);
9562 +
9563 +extern long vs_state_change(struct vx_info *, unsigned int);
9564 +
9565 +
9566 +#endif /* _VSERVER_CONTEXT_H */
9567 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/context_cmd.h linux-4.9/include/linux/vserver/context_cmd.h
9568 --- linux-4.9/include/linux/vserver/context_cmd.h       1970-01-01 01:00:00.000000000 +0100
9569 +++ linux-4.9/include/linux/vserver/context_cmd.h       2021-02-24 15:47:45.094409658 +0100
9570 @@ -0,0 +1,33 @@
9571 +#ifndef _VSERVER_CONTEXT_CMD_H
9572 +#define _VSERVER_CONTEXT_CMD_H
9573 +
9574 +#include <uapi/vserver/context_cmd.h>
9575 +
9576 +extern int vc_task_xid(uint32_t);
9577 +
9578 +extern int vc_vx_info(struct vx_info *, void __user *);
9579 +
9580 +extern int vc_ctx_stat(struct vx_info *, void __user *);
9581 +
9582 +extern int vc_ctx_create(uint32_t, void __user *);
9583 +extern int vc_ctx_migrate(struct vx_info *, void __user *);
9584 +
9585 +extern int vc_get_cflags(struct vx_info *, void __user *);
9586 +extern int vc_set_cflags(struct vx_info *, void __user *);
9587 +
9588 +extern int vc_get_ccaps(struct vx_info *, void __user *);
9589 +extern int vc_set_ccaps(struct vx_info *, void __user *);
9590 +
9591 +extern int vc_get_bcaps(struct vx_info *, void __user *);
9592 +extern int vc_set_bcaps(struct vx_info *, void __user *);
9593 +
9594 +extern int vc_get_umask(struct vx_info *, void __user *);
9595 +extern int vc_set_umask(struct vx_info *, void __user *);
9596 +
9597 +extern int vc_get_wmask(struct vx_info *, void __user *);
9598 +extern int vc_set_wmask(struct vx_info *, void __user *);
9599 +
9600 +extern int vc_get_badness(struct vx_info *, void __user *);
9601 +extern int vc_set_badness(struct vx_info *, void __user *);
9602 +
9603 +#endif /* _VSERVER_CONTEXT_CMD_H */
9604 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/cvirt.h linux-4.9/include/linux/vserver/cvirt.h
9605 --- linux-4.9/include/linux/vserver/cvirt.h     1970-01-01 01:00:00.000000000 +0100
9606 +++ linux-4.9/include/linux/vserver/cvirt.h     2021-02-24 15:47:45.094409658 +0100
9607 @@ -0,0 +1,11 @@
9608 +#ifndef _VSERVER_CVIRT_H
9609 +#define _VSERVER_CVIRT_H
9610 +
9611 +struct vx_info;
9612 +
9613 +void vx_update_load(struct vx_info *);
9614 +
9615 +
9616 +int vx_do_syslog(int, char __user *, int);
9617 +
9618 +#endif /* _VSERVER_CVIRT_H */
9619 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/cvirt_cmd.h linux-4.9/include/linux/vserver/cvirt_cmd.h
9620 --- linux-4.9/include/linux/vserver/cvirt_cmd.h 1970-01-01 01:00:00.000000000 +0100
9621 +++ linux-4.9/include/linux/vserver/cvirt_cmd.h 2021-02-24 15:47:45.094409658 +0100
9622 @@ -0,0 +1,13 @@
9623 +#ifndef _VSERVER_CVIRT_CMD_H
9624 +#define _VSERVER_CVIRT_CMD_H
9625 +
9626 +
9627 +#include <linux/compiler.h>
9628 +#include <uapi/vserver/cvirt_cmd.h>
9629 +
9630 +extern int vc_set_vhi_name(struct vx_info *, void __user *);
9631 +extern int vc_get_vhi_name(struct vx_info *, void __user *);
9632 +
9633 +extern int vc_virt_stat(struct vx_info *, void __user *);
9634 +
9635 +#endif /* _VSERVER_CVIRT_CMD_H */
9636 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/cvirt_def.h linux-4.9/include/linux/vserver/cvirt_def.h
9637 --- linux-4.9/include/linux/vserver/cvirt_def.h 1970-01-01 01:00:00.000000000 +0100
9638 +++ linux-4.9/include/linux/vserver/cvirt_def.h 2021-02-24 15:47:45.094409658 +0100
9639 @@ -0,0 +1,80 @@
9640 +#ifndef _VSERVER_CVIRT_DEF_H
9641 +#define _VSERVER_CVIRT_DEF_H
9642 +
9643 +#include <linux/jiffies.h>
9644 +#include <linux/spinlock.h>
9645 +#include <linux/wait.h>
9646 +#include <linux/time.h>
9647 +#include <asm/atomic.h>
9648 +
9649 +
9650 +struct _vx_usage_stat {
9651 +       uint64_t user;
9652 +       uint64_t nice;
9653 +       uint64_t system;
9654 +       uint64_t softirq;
9655 +       uint64_t irq;
9656 +       uint64_t idle;
9657 +       uint64_t iowait;
9658 +};
9659 +
9660 +struct _vx_syslog {
9661 +       wait_queue_head_t log_wait;
9662 +       spinlock_t logbuf_lock;         /* lock for the log buffer */
9663 +
9664 +       unsigned long log_start;        /* next char to be read by syslog() */
9665 +       unsigned long con_start;        /* next char to be sent to consoles */
9666 +       unsigned long log_end;  /* most-recently-written-char + 1 */
9667 +       unsigned long logged_chars;     /* #chars since last read+clear operation */
9668 +
9669 +       char log_buf[1024];
9670 +};
9671 +
9672 +
9673 +/* context sub struct */
9674 +
9675 +struct _vx_cvirt {
9676 +       atomic_t nr_threads;            /* number of current threads */
9677 +       atomic_t nr_running;            /* number of running threads */
9678 +       atomic_t nr_uninterruptible;    /* number of uninterruptible threads */
9679 +
9680 +       atomic_t nr_onhold;             /* processes on hold */
9681 +       uint32_t onhold_last;           /* jiffies when put on hold */
9682 +
9683 +       struct timespec64 bias_ts;      /* time offset to the host */
9684 +       struct timespec64 bias_idle;
9685 +       struct timespec64 bias_uptime;  /* context creation point */
9686 +       uint64_t bias_clock;            /* offset in clock_t */
9687 +
9688 +       spinlock_t load_lock;           /* lock for the load averages */
9689 +       atomic_t load_updates;          /* nr of load updates done so far */
9690 +       uint32_t load_last;             /* last time load was calculated */
9691 +       uint32_t load[3];               /* load averages 1,5,15 */
9692 +
9693 +       atomic_t total_forks;           /* number of forks so far */
9694 +
9695 +       struct _vx_syslog syslog;
9696 +};
9697 +
9698 +struct _vx_cvirt_pc {
9699 +       struct _vx_usage_stat cpustat;
9700 +};
9701 +
9702 +
9703 +#ifdef CONFIG_VSERVER_DEBUG
9704 +
9705 +static inline void __dump_vx_cvirt(struct _vx_cvirt *cvirt)
9706 +{
9707 +       printk("\t_vx_cvirt:\n");
9708 +       printk("\t threads: %4d, %4d, %4d, %4d\n",
9709 +               atomic_read(&cvirt->nr_threads),
9710 +               atomic_read(&cvirt->nr_running),
9711 +               atomic_read(&cvirt->nr_uninterruptible),
9712 +               atomic_read(&cvirt->nr_onhold));
9713 +       /* add rest here */
9714 +       printk("\t total_forks = %d\n", atomic_read(&cvirt->total_forks));
9715 +}
9716 +
9717 +#endif
9718 +
9719 +#endif /* _VSERVER_CVIRT_DEF_H */
9720 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/debug.h linux-4.9/include/linux/vserver/debug.h
9721 --- linux-4.9/include/linux/vserver/debug.h     1970-01-01 01:00:00.000000000 +0100
9722 +++ linux-4.9/include/linux/vserver/debug.h     2021-02-24 15:47:45.094409658 +0100
9723 @@ -0,0 +1,146 @@
9724 +#ifndef _VSERVER_DEBUG_H
9725 +#define _VSERVER_DEBUG_H
9726 +
9727 +
9728 +#define VXD_CBIT(n, m) (vs_debug_ ## n & (1 << (m)))
9729 +#define VXD_CMIN(n, m) (vs_debug_ ## n > (m))
9730 +#define VXD_MASK(n, m) (vs_debug_ ## n & (m))
9731 +
9732 +#define VXD_DEV(d)     (d), (d)->bd_inode->i_ino,              \
9733 +                       imajor((d)->bd_inode), iminor((d)->bd_inode)
9734 +#define VXF_DEV                "%p[%lu,%d:%d]"
9735 +
9736 +#if    defined(CONFIG_QUOTES_UTF8)
9737 +#define        VS_Q_LQM        "\xc2\xbb"
9738 +#define        VS_Q_RQM        "\xc2\xab"
9739 +#elif  defined(CONFIG_QUOTES_ASCII)
9740 +#define        VS_Q_LQM        "\x27"
9741 +#define        VS_Q_RQM        "\x27"
9742 +#else
9743 +#define        VS_Q_LQM        "\xbb"
9744 +#define        VS_Q_RQM        "\xab"
9745 +#endif
9746 +
9747 +#define        VS_Q(f)         VS_Q_LQM f VS_Q_RQM
9748 +
9749 +
9750 +#define vxd_path(p)                                            \
9751 +       ({ static char _buffer[PATH_MAX];                       \
9752 +          d_path(p, _buffer, sizeof(_buffer)); })
9753 +
9754 +#define vxd_cond_path(n)                                       \
9755 +       ((n) ? vxd_path(&(n)->path) : "<null>" )
9756 +
9757 +
9758 +#ifdef CONFIG_VSERVER_DEBUG
9759 +
9760 +extern unsigned int vs_debug_switch;
9761 +extern unsigned int vs_debug_xid;
9762 +extern unsigned int vs_debug_nid;
9763 +extern unsigned int vs_debug_tag;
9764 +extern unsigned int vs_debug_net;
9765 +extern unsigned int vs_debug_limit;
9766 +extern unsigned int vs_debug_cres;
9767 +extern unsigned int vs_debug_dlim;
9768 +extern unsigned int vs_debug_quota;
9769 +extern unsigned int vs_debug_cvirt;
9770 +extern unsigned int vs_debug_space;
9771 +extern unsigned int vs_debug_perm;
9772 +extern unsigned int vs_debug_misc;
9773 +
9774 +
9775 +#define VX_LOGLEVEL    "vxD: "
9776 +#define VX_PROC_FMT    "%p: "
9777 +#define VX_PROCESS     current
9778 +
9779 +#define vxdprintk(c, f, x...)                                  \
9780 +       do {                                                    \
9781 +               if (c)                                          \
9782 +                       printk(VX_LOGLEVEL VX_PROC_FMT f "\n",  \
9783 +                               VX_PROCESS , ##x);              \
9784 +       } while (0)
9785 +
9786 +#define vxlprintk(c, f, x...)                                  \
9787 +       do {                                                    \
9788 +               if (c)                                          \
9789 +                       printk(VX_LOGLEVEL f " @%s:%d\n", x);   \
9790 +       } while (0)
9791 +
9792 +#define vxfprintk(c, f, x...)                                  \
9793 +       do {                                                    \
9794 +               if (c)                                          \
9795 +                       printk(VX_LOGLEVEL f " %s@%s:%d\n", x); \
9796 +       } while (0)
9797 +
9798 +
9799 +struct vx_info;
9800 +
9801 +void dump_vx_info(struct vx_info *, int);
9802 +void dump_vx_info_inactive(int);
9803 +
9804 +#else  /* CONFIG_VSERVER_DEBUG */
9805 +
9806 +#define vs_debug_switch        0
9807 +#define vs_debug_xid   0
9808 +#define vs_debug_nid   0
9809 +#define vs_debug_tag   0
9810 +#define vs_debug_net   0
9811 +#define vs_debug_limit 0
9812 +#define vs_debug_cres  0
9813 +#define vs_debug_dlim  0
9814 +#define vs_debug_quota 0
9815 +#define vs_debug_cvirt 0
9816 +#define vs_debug_space 0
9817 +#define vs_debug_perm  0
9818 +#define vs_debug_misc  0
9819 +
9820 +#define vxdprintk(x...) do { } while (0)
9821 +#define vxlprintk(x...) do { } while (0)
9822 +#define vxfprintk(x...) do { } while (0)
9823 +
9824 +#endif /* CONFIG_VSERVER_DEBUG */
9825 +
9826 +
9827 +#ifdef CONFIG_VSERVER_WARN
9828 +
9829 +#define VX_WARNLEVEL   KERN_WARNING "vxW: "
9830 +#define VX_WARN_TASK   "[" VS_Q("%s") ",%u:#%u|%u|%u] "
9831 +#define VX_WARN_XID    "[xid #%u] "
9832 +#define VX_WARN_NID    "[nid #%u] "
9833 +#define VX_WARN_TAG    "[tag #%u] "
9834 +
9835 +#define vxwprintk(c, f, x...)                                  \
9836 +       do {                                                    \
9837 +               if (c)                                          \
9838 +                       printk(VX_WARNLEVEL f "\n", ##x);       \
9839 +       } while (0)
9840 +
9841 +#else  /* CONFIG_VSERVER_WARN */
9842 +
9843 +#define vxwprintk(x...) do { } while (0)
9844 +
9845 +#endif /* CONFIG_VSERVER_WARN */
9846 +
9847 +#define vxwprintk_task(c, f, x...)                             \
9848 +       vxwprintk(c, VX_WARN_TASK f,                            \
9849 +               current->comm, current->pid,                    \
9850 +               current->xid, current->nid,                     \
9851 +               current->tag, ##x)
9852 +#define vxwprintk_xid(c, f, x...)                              \
9853 +       vxwprintk(c, VX_WARN_XID f, current->xid, x)
9854 +#define vxwprintk_nid(c, f, x...)                              \
9855 +       vxwprintk(c, VX_WARN_NID f, current->nid, x)
9856 +#define vxwprintk_tag(c, f, x...)                              \
9857 +       vxwprintk(c, VX_WARN_TAG f, current->tag, x)
9858 +
9859 +#ifdef CONFIG_VSERVER_DEBUG
9860 +#define vxd_assert_lock(l)     assert_spin_locked(l)
9861 +#define vxd_assert(c, f, x...) vxlprintk(!(c), \
9862 +       "assertion [" f "] failed.", ##x, __FILE__, __LINE__)
9863 +#else
9864 +#define vxd_assert_lock(l)     do { } while (0)
9865 +#define vxd_assert(c, f, x...) do { } while (0)
9866 +#endif
9867 +
9868 +
9869 +#endif /* _VSERVER_DEBUG_H */
9870 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/debug_cmd.h linux-4.9/include/linux/vserver/debug_cmd.h
9871 --- linux-4.9/include/linux/vserver/debug_cmd.h 1970-01-01 01:00:00.000000000 +0100
9872 +++ linux-4.9/include/linux/vserver/debug_cmd.h 2021-02-24 15:47:45.094409658 +0100
9873 @@ -0,0 +1,37 @@
9874 +#ifndef _VSERVER_DEBUG_CMD_H
9875 +#define _VSERVER_DEBUG_CMD_H
9876 +
9877 +#include <uapi/vserver/debug_cmd.h>
9878 +
9879 +
9880 +#ifdef CONFIG_COMPAT
9881 +
9882 +#include <asm/compat.h>
9883 +
9884 +struct vcmd_read_history_v0_x32 {
9885 +       uint32_t index;
9886 +       uint32_t count;
9887 +       compat_uptr_t data_ptr;
9888 +};
9889 +
9890 +struct vcmd_read_monitor_v0_x32 {
9891 +       uint32_t index;
9892 +       uint32_t count;
9893 +       compat_uptr_t data_ptr;
9894 +};
9895 +
9896 +#endif  /* CONFIG_COMPAT */
9897 +
9898 +extern int vc_dump_history(uint32_t);
9899 +
9900 +extern int vc_read_history(uint32_t, void __user *);
9901 +extern int vc_read_monitor(uint32_t, void __user *);
9902 +
9903 +#ifdef CONFIG_COMPAT
9904 +
9905 +extern int vc_read_history_x32(uint32_t, void __user *);
9906 +extern int vc_read_monitor_x32(uint32_t, void __user *);
9907 +
9908 +#endif  /* CONFIG_COMPAT */
9909 +
9910 +#endif /* _VSERVER_DEBUG_CMD_H */
9911 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/device.h linux-4.9/include/linux/vserver/device.h
9912 --- linux-4.9/include/linux/vserver/device.h    1970-01-01 01:00:00.000000000 +0100
9913 +++ linux-4.9/include/linux/vserver/device.h    2021-02-24 15:47:45.094409658 +0100
9914 @@ -0,0 +1,9 @@
9915 +#ifndef _VSERVER_DEVICE_H
9916 +#define _VSERVER_DEVICE_H
9917 +
9918 +
9919 +#include <uapi/vserver/device.h>
9920 +
9921 +#else  /* _VSERVER_DEVICE_H */
9922 +#warning duplicate inclusion
9923 +#endif /* _VSERVER_DEVICE_H */
9924 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/device_cmd.h linux-4.9/include/linux/vserver/device_cmd.h
9925 --- linux-4.9/include/linux/vserver/device_cmd.h        1970-01-01 01:00:00.000000000 +0100
9926 +++ linux-4.9/include/linux/vserver/device_cmd.h        2021-02-24 15:47:45.094409658 +0100
9927 @@ -0,0 +1,31 @@
9928 +#ifndef _VSERVER_DEVICE_CMD_H
9929 +#define _VSERVER_DEVICE_CMD_H
9930 +
9931 +#include <uapi/vserver/device_cmd.h>
9932 +
9933 +
9934 +#ifdef CONFIG_COMPAT
9935 +
9936 +#include <asm/compat.h>
9937 +
9938 +struct vcmd_set_mapping_v0_x32 {
9939 +       compat_uptr_t device_ptr;
9940 +       compat_uptr_t target_ptr;
9941 +       uint32_t flags;
9942 +};
9943 +
9944 +#endif /* CONFIG_COMPAT */
9945 +
9946 +#include <linux/compiler.h>
9947 +
9948 +extern int vc_set_mapping(struct vx_info *, void __user *);
9949 +extern int vc_unset_mapping(struct vx_info *, void __user *);
9950 +
9951 +#ifdef CONFIG_COMPAT
9952 +
9953 +extern int vc_set_mapping_x32(struct vx_info *, void __user *);
9954 +extern int vc_unset_mapping_x32(struct vx_info *, void __user *);
9955 +
9956 +#endif /* CONFIG_COMPAT */
9957 +
9958 +#endif /* _VSERVER_DEVICE_CMD_H */
9959 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/device_def.h linux-4.9/include/linux/vserver/device_def.h
9960 --- linux-4.9/include/linux/vserver/device_def.h        1970-01-01 01:00:00.000000000 +0100
9961 +++ linux-4.9/include/linux/vserver/device_def.h        2021-02-24 15:47:45.094409658 +0100
9962 @@ -0,0 +1,17 @@
9963 +#ifndef _VSERVER_DEVICE_DEF_H
9964 +#define _VSERVER_DEVICE_DEF_H
9965 +
9966 +#include <linux/types.h>
9967 +
9968 +struct vx_dmap_target {
9969 +       dev_t target;
9970 +       uint32_t flags;
9971 +};
9972 +
9973 +struct _vx_device {
9974 +#ifdef CONFIG_VSERVER_DEVICE
9975 +       struct vx_dmap_target targets[2];
9976 +#endif
9977 +};
9978 +
9979 +#endif /* _VSERVER_DEVICE_DEF_H */
9980 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/dlimit.h linux-4.9/include/linux/vserver/dlimit.h
9981 --- linux-4.9/include/linux/vserver/dlimit.h    1970-01-01 01:00:00.000000000 +0100
9982 +++ linux-4.9/include/linux/vserver/dlimit.h    2021-02-24 15:47:45.094409658 +0100
9983 @@ -0,0 +1,54 @@
9984 +#ifndef _VSERVER_DLIMIT_H
9985 +#define _VSERVER_DLIMIT_H
9986 +
9987 +#include "switch.h"
9988 +
9989 +
9990 +#ifdef __KERNEL__
9991 +
9992 +/*      keep in sync with CDLIM_INFINITY       */
9993 +
9994 +#define DLIM_INFINITY          (~0ULL)
9995 +
9996 +#include <linux/spinlock.h>
9997 +#include <linux/rcupdate.h>
9998 +
9999 +struct super_block;
10000 +
10001 +struct dl_info {
10002 +       struct hlist_node dl_hlist;             /* linked list of contexts */
10003 +       struct rcu_head dl_rcu;                 /* the rcu head */
10004 +       vtag_t dl_tag;                          /* context tag */
10005 +       atomic_t dl_usecnt;                     /* usage count */
10006 +       atomic_t dl_refcnt;                     /* reference count */
10007 +
10008 +       struct super_block *dl_sb;              /* associated superblock */
10009 +
10010 +       spinlock_t dl_lock;                     /* protect the values */
10011 +
10012 +       unsigned long long dl_space_used;       /* used space in bytes */
10013 +       unsigned long long dl_space_total;      /* maximum space in bytes */
10014 +       unsigned long dl_inodes_used;           /* used inodes */
10015 +       unsigned long dl_inodes_total;          /* maximum inodes */
10016 +
10017 +       unsigned int dl_nrlmult;                /* non root limit mult */
10018 +};
10019 +
10020 +struct rcu_head;
10021 +
10022 +extern void rcu_free_dl_info(struct rcu_head *);
10023 +extern void unhash_dl_info(struct dl_info *);
10024 +
10025 +extern struct dl_info *locate_dl_info(struct super_block *, vtag_t);
10026 +
10027 +
10028 +struct kstatfs;
10029 +
10030 +extern void vx_vsi_statfs(struct super_block *, struct kstatfs *);
10031 +
10032 +typedef uint64_t dlsize_t;
10033 +
10034 +#endif /* __KERNEL__ */
10035 +#else  /* _VSERVER_DLIMIT_H */
10036 +#warning duplicate inclusion
10037 +#endif /* _VSERVER_DLIMIT_H */
10038 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/dlimit_cmd.h linux-4.9/include/linux/vserver/dlimit_cmd.h
10039 --- linux-4.9/include/linux/vserver/dlimit_cmd.h        1970-01-01 01:00:00.000000000 +0100
10040 +++ linux-4.9/include/linux/vserver/dlimit_cmd.h        2021-02-24 15:47:45.094409658 +0100
10041 @@ -0,0 +1,46 @@
10042 +#ifndef _VSERVER_DLIMIT_CMD_H
10043 +#define _VSERVER_DLIMIT_CMD_H
10044 +
10045 +#include <uapi/vserver/dlimit_cmd.h>
10046 +
10047 +
10048 +#ifdef CONFIG_COMPAT
10049 +
10050 +#include <asm/compat.h>
10051 +
10052 +struct vcmd_ctx_dlimit_base_v0_x32 {
10053 +       compat_uptr_t name_ptr;
10054 +       uint32_t flags;
10055 +};
10056 +
10057 +struct vcmd_ctx_dlimit_v0_x32 {
10058 +       compat_uptr_t name_ptr;
10059 +       uint32_t space_used;                    /* used space in kbytes */
10060 +       uint32_t space_total;                   /* maximum space in kbytes */
10061 +       uint32_t inodes_used;                   /* used inodes */
10062 +       uint32_t inodes_total;                  /* maximum inodes */
10063 +       uint32_t reserved;                      /* reserved for root in % */
10064 +       uint32_t flags;
10065 +};
10066 +
10067 +#endif /* CONFIG_COMPAT */
10068 +
10069 +#include <linux/compiler.h>
10070 +
10071 +extern int vc_add_dlimit(uint32_t, void __user *);
10072 +extern int vc_rem_dlimit(uint32_t, void __user *);
10073 +
10074 +extern int vc_set_dlimit(uint32_t, void __user *);
10075 +extern int vc_get_dlimit(uint32_t, void __user *);
10076 +
10077 +#ifdef CONFIG_COMPAT
10078 +
10079 +extern int vc_add_dlimit_x32(uint32_t, void __user *);
10080 +extern int vc_rem_dlimit_x32(uint32_t, void __user *);
10081 +
10082 +extern int vc_set_dlimit_x32(uint32_t, void __user *);
10083 +extern int vc_get_dlimit_x32(uint32_t, void __user *);
10084 +
10085 +#endif /* CONFIG_COMPAT */
10086 +
10087 +#endif /* _VSERVER_DLIMIT_CMD_H */
10088 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/global.h linux-4.9/include/linux/vserver/global.h
10089 --- linux-4.9/include/linux/vserver/global.h    1970-01-01 01:00:00.000000000 +0100
10090 +++ linux-4.9/include/linux/vserver/global.h    2021-02-24 15:47:45.094409658 +0100
10091 @@ -0,0 +1,20 @@
10092 +#ifndef _VSERVER_GLOBAL_H
10093 +#define _VSERVER_GLOBAL_H
10094 +
10095 +
10096 +extern atomic_t vx_global_ctotal;
10097 +extern atomic_t vx_global_cactive;
10098 +
10099 +extern atomic_t nx_global_ctotal;
10100 +extern atomic_t nx_global_cactive;
10101 +
10102 +extern atomic_t vs_global_nsproxy;
10103 +extern atomic_t vs_global_fs;
10104 +extern atomic_t vs_global_mnt_ns;
10105 +extern atomic_t vs_global_uts_ns;
10106 +extern atomic_t vs_global_ipc_ns;
10107 +extern atomic_t vs_global_user_ns;
10108 +extern atomic_t vs_global_pid_ns;
10109 +
10110 +
10111 +#endif /* _VSERVER_GLOBAL_H */
10112 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/history.h linux-4.9/include/linux/vserver/history.h
10113 --- linux-4.9/include/linux/vserver/history.h   1970-01-01 01:00:00.000000000 +0100
10114 +++ linux-4.9/include/linux/vserver/history.h   2021-02-24 15:47:45.094409658 +0100
10115 @@ -0,0 +1,197 @@
10116 +#ifndef _VSERVER_HISTORY_H
10117 +#define _VSERVER_HISTORY_H
10118 +
10119 +
10120 +enum {
10121 +       VXH_UNUSED = 0,
10122 +       VXH_THROW_OOPS = 1,
10123 +
10124 +       VXH_GET_VX_INFO,
10125 +       VXH_PUT_VX_INFO,
10126 +       VXH_INIT_VX_INFO,
10127 +       VXH_SET_VX_INFO,
10128 +       VXH_CLR_VX_INFO,
10129 +       VXH_CLAIM_VX_INFO,
10130 +       VXH_RELEASE_VX_INFO,
10131 +       VXH_ALLOC_VX_INFO,
10132 +       VXH_DEALLOC_VX_INFO,
10133 +       VXH_HASH_VX_INFO,
10134 +       VXH_UNHASH_VX_INFO,
10135 +       VXH_LOC_VX_INFO,
10136 +       VXH_LOOKUP_VX_INFO,
10137 +       VXH_CREATE_VX_INFO,
10138 +};
10139 +
10140 +struct _vxhe_vxi {
10141 +       struct vx_info *ptr;
10142 +       unsigned xid;
10143 +       unsigned usecnt;
10144 +       unsigned tasks;
10145 +};
10146 +
10147 +struct _vxhe_set_clr {
10148 +       void *data;
10149 +};
10150 +
10151 +struct _vxhe_loc_lookup {
10152 +       unsigned arg;
10153 +};
10154 +
10155 +struct _vx_hist_entry {
10156 +       void *loc;
10157 +       unsigned short seq;
10158 +       unsigned short type;
10159 +       struct _vxhe_vxi vxi;
10160 +       union {
10161 +               struct _vxhe_set_clr sc;
10162 +               struct _vxhe_loc_lookup ll;
10163 +       };
10164 +};
10165 +
10166 +#ifdef CONFIG_VSERVER_HISTORY
10167 +
10168 +extern unsigned volatile int vxh_active;
10169 +
10170 +struct _vx_hist_entry *vxh_advance(void *loc);
10171 +
10172 +
10173 +static inline
10174 +void   __vxh_copy_vxi(struct _vx_hist_entry *entry, struct vx_info *vxi)
10175 +{
10176 +       entry->vxi.ptr = vxi;
10177 +       if (vxi) {
10178 +               entry->vxi.usecnt = atomic_read(&vxi->vx_usecnt);
10179 +               entry->vxi.tasks = atomic_read(&vxi->vx_tasks);
10180 +               entry->vxi.xid = vxi->vx_id;
10181 +       }
10182 +}
10183 +
10184 +
10185 +#define        __HERE__ current_text_addr()
10186 +
10187 +#define __VXH_BODY(__type, __data, __here)     \
10188 +       struct _vx_hist_entry *entry;           \
10189 +                                               \
10190 +       preempt_disable();                      \
10191 +       entry = vxh_advance(__here);            \
10192 +       __data;                                 \
10193 +       entry->type = __type;                   \
10194 +       preempt_enable();
10195 +
10196 +
10197 +       /* pass vxi only */
10198 +
10199 +#define __VXH_SMPL                             \
10200 +       __vxh_copy_vxi(entry, vxi)
10201 +
10202 +static inline
10203 +void   __vxh_smpl(struct vx_info *vxi, int __type, void *__here)
10204 +{
10205 +       __VXH_BODY(__type, __VXH_SMPL, __here)
10206 +}
10207 +
10208 +       /* pass vxi and data (void *) */
10209 +
10210 +#define __VXH_DATA                             \
10211 +       __vxh_copy_vxi(entry, vxi);             \
10212 +       entry->sc.data = data
10213 +
10214 +static inline
10215 +void   __vxh_data(struct vx_info *vxi, void *data,
10216 +                       int __type, void *__here)
10217 +{
10218 +       __VXH_BODY(__type, __VXH_DATA, __here)
10219 +}
10220 +
10221 +       /* pass vxi and arg (long) */
10222 +
10223 +#define __VXH_LONG                             \
10224 +       __vxh_copy_vxi(entry, vxi);             \
10225 +       entry->ll.arg = arg
10226 +
10227 +static inline
10228 +void   __vxh_long(struct vx_info *vxi, long arg,
10229 +                       int __type, void *__here)
10230 +{
10231 +       __VXH_BODY(__type, __VXH_LONG, __here)
10232 +}
10233 +
10234 +
10235 +static inline
10236 +void   __vxh_throw_oops(void *__here)
10237 +{
10238 +       __VXH_BODY(VXH_THROW_OOPS, {}, __here);
10239 +       /* prevent further acquisition */
10240 +       vxh_active = 0;
10241 +}
10242 +
10243 +
10244 +#define vxh_throw_oops()       __vxh_throw_oops(__HERE__);
10245 +
10246 +#define __vxh_get_vx_info(v, h)        __vxh_smpl(v, VXH_GET_VX_INFO, h);
10247 +#define __vxh_put_vx_info(v, h)        __vxh_smpl(v, VXH_PUT_VX_INFO, h);
10248 +
10249 +#define __vxh_init_vx_info(v, d, h) \
10250 +       __vxh_data(v, d, VXH_INIT_VX_INFO, h);
10251 +#define __vxh_set_vx_info(v, d, h) \
10252 +       __vxh_data(v, d, VXH_SET_VX_INFO, h);
10253 +#define __vxh_clr_vx_info(v, d, h) \
10254 +       __vxh_data(v, d, VXH_CLR_VX_INFO, h);
10255 +
10256 +#define __vxh_claim_vx_info(v, d, h) \
10257 +       __vxh_data(v, d, VXH_CLAIM_VX_INFO, h);
10258 +#define __vxh_release_vx_info(v, d, h) \
10259 +       __vxh_data(v, d, VXH_RELEASE_VX_INFO, h);
10260 +
10261 +#define vxh_alloc_vx_info(v) \
10262 +       __vxh_smpl(v, VXH_ALLOC_VX_INFO, __HERE__);
10263 +#define vxh_dealloc_vx_info(v) \
10264 +       __vxh_smpl(v, VXH_DEALLOC_VX_INFO, __HERE__);
10265 +
10266 +#define vxh_hash_vx_info(v) \
10267 +       __vxh_smpl(v, VXH_HASH_VX_INFO, __HERE__);
10268 +#define vxh_unhash_vx_info(v) \
10269 +       __vxh_smpl(v, VXH_UNHASH_VX_INFO, __HERE__);
10270 +
10271 +#define vxh_loc_vx_info(v, l) \
10272 +       __vxh_long(v, l, VXH_LOC_VX_INFO, __HERE__);
10273 +#define vxh_lookup_vx_info(v, l) \
10274 +       __vxh_long(v, l, VXH_LOOKUP_VX_INFO, __HERE__);
10275 +#define vxh_create_vx_info(v, l) \
10276 +       __vxh_long(v, l, VXH_CREATE_VX_INFO, __HERE__);
10277 +
10278 +extern void vxh_dump_history(void);
10279 +
10280 +
10281 +#else  /* CONFIG_VSERVER_HISTORY */
10282 +
10283 +#define        __HERE__        0
10284 +
10285 +#define vxh_throw_oops()               do { } while (0)
10286 +
10287 +#define __vxh_get_vx_info(v, h)                do { } while (0)
10288 +#define __vxh_put_vx_info(v, h)                do { } while (0)
10289 +
10290 +#define __vxh_init_vx_info(v, d, h)    do { } while (0)
10291 +#define __vxh_set_vx_info(v, d, h)     do { } while (0)
10292 +#define __vxh_clr_vx_info(v, d, h)     do { } while (0)
10293 +
10294 +#define __vxh_claim_vx_info(v, d, h)   do { } while (0)
10295 +#define __vxh_release_vx_info(v, d, h) do { } while (0)
10296 +
10297 +#define vxh_alloc_vx_info(v)           do { } while (0)
10298 +#define vxh_dealloc_vx_info(v)         do { } while (0)
10299 +
10300 +#define vxh_hash_vx_info(v)            do { } while (0)
10301 +#define vxh_unhash_vx_info(v)          do { } while (0)
10302 +
10303 +#define vxh_loc_vx_info(v, l)          do { } while (0)
10304 +#define vxh_lookup_vx_info(v, l)       do { } while (0)
10305 +#define vxh_create_vx_info(v, l)       do { } while (0)
10306 +
10307 +#define vxh_dump_history()             do { } while (0)
10308 +
10309 +
10310 +#endif /* CONFIG_VSERVER_HISTORY */
10311 +
10312 +#endif /* _VSERVER_HISTORY_H */
10313 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/inode.h linux-4.9/include/linux/vserver/inode.h
10314 --- linux-4.9/include/linux/vserver/inode.h     1970-01-01 01:00:00.000000000 +0100
10315 +++ linux-4.9/include/linux/vserver/inode.h     2021-02-24 15:47:45.097743096 +0100
10316 @@ -0,0 +1,19 @@
10317 +#ifndef _VSERVER_INODE_H
10318 +#define _VSERVER_INODE_H
10319 +
10320 +#include <uapi/vserver/inode.h>
10321 +
10322 +
10323 +#ifdef CONFIG_VSERVER_PROC_SECURE
10324 +#define IATTR_PROC_DEFAULT     ( IATTR_ADMIN | IATTR_HIDE )
10325 +#define IATTR_PROC_SYMLINK     ( IATTR_ADMIN )
10326 +#else
10327 +#define IATTR_PROC_DEFAULT     ( IATTR_ADMIN )
10328 +#define IATTR_PROC_SYMLINK     ( IATTR_ADMIN )
10329 +#endif
10330 +
10331 +#define vx_hide_check(c, m)    (((m) & IATTR_HIDE) ? vx_check(c, m) : 1)
10332 +
10333 +#else  /* _VSERVER_INODE_H */
10334 +#warning duplicate inclusion
10335 +#endif /* _VSERVER_INODE_H */
10336 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/inode_cmd.h linux-4.9/include/linux/vserver/inode_cmd.h
10337 --- linux-4.9/include/linux/vserver/inode_cmd.h 1970-01-01 01:00:00.000000000 +0100
10338 +++ linux-4.9/include/linux/vserver/inode_cmd.h 2021-02-24 15:47:45.097743096 +0100
10339 @@ -0,0 +1,36 @@
10340 +#ifndef _VSERVER_INODE_CMD_H
10341 +#define _VSERVER_INODE_CMD_H
10342 +
10343 +#include <uapi/vserver/inode_cmd.h>
10344 +
10345 +
10346 +
10347 +#ifdef CONFIG_COMPAT
10348 +
10349 +#include <asm/compat.h>
10350 +
10351 +struct vcmd_ctx_iattr_v1_x32 {
10352 +       compat_uptr_t name_ptr;
10353 +       uint32_t tag;
10354 +       uint32_t flags;
10355 +       uint32_t mask;
10356 +};
10357 +
10358 +#endif /* CONFIG_COMPAT */
10359 +
10360 +#include <linux/compiler.h>
10361 +
10362 +extern int vc_get_iattr(void __user *);
10363 +extern int vc_set_iattr(void __user *);
10364 +
10365 +extern int vc_fget_iattr(uint32_t, void __user *);
10366 +extern int vc_fset_iattr(uint32_t, void __user *);
10367 +
10368 +#ifdef CONFIG_COMPAT
10369 +
10370 +extern int vc_get_iattr_x32(void __user *);
10371 +extern int vc_set_iattr_x32(void __user *);
10372 +
10373 +#endif /* CONFIG_COMPAT */
10374 +
10375 +#endif /* _VSERVER_INODE_CMD_H */
10376 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/limit.h linux-4.9/include/linux/vserver/limit.h
10377 --- linux-4.9/include/linux/vserver/limit.h     1970-01-01 01:00:00.000000000 +0100
10378 +++ linux-4.9/include/linux/vserver/limit.h     2021-02-24 15:47:45.097743096 +0100
10379 @@ -0,0 +1,67 @@
10380 +#ifndef _VSERVER_LIMIT_H
10381 +#define _VSERVER_LIMIT_H
10382 +
10383 +#include <uapi/vserver/limit.h>
10384 +
10385 +
10386 +#define        VLIM_NOCHECK    ((1L << VLIMIT_DENTRY) | (1L << RLIMIT_RSS))
10387 +
10388 +/*     keep in sync with CRLIM_INFINITY */
10389 +
10390 +#define        VLIM_INFINITY   (~0ULL)
10391 +
10392 +#include <asm/atomic.h>
10393 +#include <asm/resource.h>
10394 +
10395 +#ifndef RLIM_INFINITY
10396 +#warning RLIM_INFINITY is undefined
10397 +#endif
10398 +
10399 +#define __rlim_val(l, r, v)    ((l)->res[r].v)
10400 +
10401 +#define __rlim_soft(l, r)      __rlim_val(l, r, soft)
10402 +#define __rlim_hard(l, r)      __rlim_val(l, r, hard)
10403 +
10404 +#define __rlim_rcur(l, r)      __rlim_val(l, r, rcur)
10405 +#define __rlim_rmin(l, r)      __rlim_val(l, r, rmin)
10406 +#define __rlim_rmax(l, r)      __rlim_val(l, r, rmax)
10407 +
10408 +#define __rlim_lhit(l, r)      __rlim_val(l, r, lhit)
10409 +#define __rlim_hit(l, r)       atomic_inc(&__rlim_lhit(l, r))
10410 +
10411 +typedef atomic_long_t rlim_atomic_t;
10412 +typedef unsigned long rlim_t;
10413 +
10414 +#define __rlim_get(l, r)       atomic_long_read(&__rlim_rcur(l, r))
10415 +#define __rlim_set(l, r, v)    atomic_long_set(&__rlim_rcur(l, r), v)
10416 +#define __rlim_inc(l, r)       atomic_long_inc(&__rlim_rcur(l, r))
10417 +#define __rlim_dec(l, r)       atomic_long_dec(&__rlim_rcur(l, r))
10418 +#define __rlim_add(l, r, v)    atomic_long_add(v, &__rlim_rcur(l, r))
10419 +#define __rlim_sub(l, r, v)    atomic_long_sub(v, &__rlim_rcur(l, r))
10420 +
10421 +
10422 +#if    (RLIM_INFINITY == VLIM_INFINITY)
10423 +#define        VX_VLIM(r) ((long long)(long)(r))
10424 +#define        VX_RLIM(v) ((rlim_t)(v))
10425 +#else
10426 +#define        VX_VLIM(r) (((r) == RLIM_INFINITY) \
10427 +               ? VLIM_INFINITY : (long long)(r))
10428 +#define        VX_RLIM(v) (((v) == VLIM_INFINITY) \
10429 +               ? RLIM_INFINITY : (rlim_t)(v))
10430 +#endif
10431 +
10432 +struct sysinfo;
10433 +
10434 +#ifdef CONFIG_MEMCG
10435 +void vx_vsi_meminfo(struct sysinfo *);
10436 +void vx_vsi_swapinfo(struct sysinfo *);
10437 +long vx_vsi_cached(struct sysinfo *);
10438 +#else  /* !CONFIG_MEMCG */
10439 +#define vx_vsi_meminfo(s) do { } while (0)
10440 +#define vx_vsi_swapinfo(s) do { } while (0)
10441 +#define vx_vsi_cached(s) (0L)
10442 +#endif /* !CONFIG_MEMCG */
10443 +
10444 +#define NUM_LIMITS     24
10445 +
10446 +#endif /* _VSERVER_LIMIT_H */
10447 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/limit_cmd.h linux-4.9/include/linux/vserver/limit_cmd.h
10448 --- linux-4.9/include/linux/vserver/limit_cmd.h 1970-01-01 01:00:00.000000000 +0100
10449 +++ linux-4.9/include/linux/vserver/limit_cmd.h 2021-02-24 15:47:45.097743096 +0100
10450 @@ -0,0 +1,35 @@
10451 +#ifndef _VSERVER_LIMIT_CMD_H
10452 +#define _VSERVER_LIMIT_CMD_H
10453 +
10454 +#include <uapi/vserver/limit_cmd.h>
10455 +
10456 +
10457 +#ifdef CONFIG_IA32_EMULATION
10458 +
10459 +struct vcmd_ctx_rlimit_v0_x32 {
10460 +       uint32_t id;
10461 +       uint64_t minimum;
10462 +       uint64_t softlimit;
10463 +       uint64_t maximum;
10464 +} __attribute__ ((packed));
10465 +
10466 +#endif /* CONFIG_IA32_EMULATION */
10467 +
10468 +#include <linux/compiler.h>
10469 +
10470 +extern int vc_get_rlimit_mask(uint32_t, void __user *);
10471 +extern int vc_get_rlimit(struct vx_info *, void __user *);
10472 +extern int vc_set_rlimit(struct vx_info *, void __user *);
10473 +extern int vc_reset_hits(struct vx_info *, void __user *);
10474 +extern int vc_reset_minmax(struct vx_info *, void __user *);
10475 +
10476 +extern int vc_rlimit_stat(struct vx_info *, void __user *);
10477 +
10478 +#ifdef CONFIG_IA32_EMULATION
10479 +
10480 +extern int vc_get_rlimit_x32(struct vx_info *, void __user *);
10481 +extern int vc_set_rlimit_x32(struct vx_info *, void __user *);
10482 +
10483 +#endif /* CONFIG_IA32_EMULATION */
10484 +
10485 +#endif /* _VSERVER_LIMIT_CMD_H */
10486 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/limit_def.h linux-4.9/include/linux/vserver/limit_def.h
10487 --- linux-4.9/include/linux/vserver/limit_def.h 1970-01-01 01:00:00.000000000 +0100
10488 +++ linux-4.9/include/linux/vserver/limit_def.h 2021-02-24 15:47:45.097743096 +0100
10489 @@ -0,0 +1,47 @@
10490 +#ifndef _VSERVER_LIMIT_DEF_H
10491 +#define _VSERVER_LIMIT_DEF_H
10492 +
10493 +#include <asm/atomic.h>
10494 +#include <asm/resource.h>
10495 +
10496 +#include "limit.h"
10497 +
10498 +
10499 +struct _vx_res_limit {
10500 +       rlim_t soft;            /* Context soft limit */
10501 +       rlim_t hard;            /* Context hard limit */
10502 +
10503 +       rlim_atomic_t rcur;     /* Current value */
10504 +       rlim_t rmin;            /* Context minimum */
10505 +       rlim_t rmax;            /* Context maximum */
10506 +
10507 +       atomic_t lhit;          /* Limit hits */
10508 +};
10509 +
10510 +/* context sub struct */
10511 +
10512 +struct _vx_limit {
10513 +       struct _vx_res_limit res[NUM_LIMITS];
10514 +};
10515 +
10516 +#ifdef CONFIG_VSERVER_DEBUG
10517 +
10518 +static inline void __dump_vx_limit(struct _vx_limit *limit)
10519 +{
10520 +       int i;
10521 +
10522 +       printk("\t_vx_limit:");
10523 +       for (i = 0; i < NUM_LIMITS; i++) {
10524 +               printk("\t [%2d] = %8lu %8lu/%8lu, %8ld/%8ld, %8d\n",
10525 +                       i, (unsigned long)__rlim_get(limit, i),
10526 +                       (unsigned long)__rlim_rmin(limit, i),
10527 +                       (unsigned long)__rlim_rmax(limit, i),
10528 +                       (long)__rlim_soft(limit, i),
10529 +                       (long)__rlim_hard(limit, i),
10530 +                       atomic_read(&__rlim_lhit(limit, i)));
10531 +       }
10532 +}
10533 +
10534 +#endif
10535 +
10536 +#endif /* _VSERVER_LIMIT_DEF_H */
10537 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/limit_int.h linux-4.9/include/linux/vserver/limit_int.h
10538 --- linux-4.9/include/linux/vserver/limit_int.h 1970-01-01 01:00:00.000000000 +0100
10539 +++ linux-4.9/include/linux/vserver/limit_int.h 2021-02-24 15:47:45.097743096 +0100
10540 @@ -0,0 +1,193 @@
10541 +#ifndef _VSERVER_LIMIT_INT_H
10542 +#define _VSERVER_LIMIT_INT_H
10543 +
10544 +#define VXD_RCRES_COND(r)      VXD_CBIT(cres, r)
10545 +#define VXD_RLIMIT_COND(r)     VXD_CBIT(limit, r)
10546 +
10547 +extern const char *vlimit_name[NUM_LIMITS];
10548 +
10549 +static inline void __vx_acc_cres(struct vx_info *vxi,
10550 +       int res, int dir, void *_data, char *_file, int _line)
10551 +{
10552 +       if (VXD_RCRES_COND(res))
10553 +               vxlprintk(1, "vx_acc_cres[%5d,%s,%2d]: %5ld%s (%p)",
10554 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10555 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10556 +                       (dir > 0) ? "++" : "--", _data, _file, _line);
10557 +       if (!vxi)
10558 +               return;
10559 +
10560 +       if (dir > 0)
10561 +               __rlim_inc(&vxi->limit, res);
10562 +       else
10563 +               __rlim_dec(&vxi->limit, res);
10564 +}
10565 +
10566 +static inline void __vx_add_cres(struct vx_info *vxi,
10567 +       int res, int amount, void *_data, char *_file, int _line)
10568 +{
10569 +       if (VXD_RCRES_COND(res))
10570 +               vxlprintk(1, "vx_add_cres[%5d,%s,%2d]: %5ld += %5d (%p)",
10571 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10572 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10573 +                       amount, _data, _file, _line);
10574 +       if (amount == 0)
10575 +               return;
10576 +       if (!vxi)
10577 +               return;
10578 +       __rlim_add(&vxi->limit, res, amount);
10579 +}
10580 +
10581 +static inline
10582 +int __vx_cres_adjust_max(struct _vx_limit *limit, int res, rlim_t value)
10583 +{
10584 +       int cond = (value > __rlim_rmax(limit, res));
10585 +
10586 +       if (cond)
10587 +               __rlim_rmax(limit, res) = value;
10588 +       return cond;
10589 +}
10590 +
10591 +static inline
10592 +int __vx_cres_adjust_min(struct _vx_limit *limit, int res, rlim_t value)
10593 +{
10594 +       int cond = (value < __rlim_rmin(limit, res));
10595 +
10596 +       if (cond)
10597 +               __rlim_rmin(limit, res) = value;
10598 +       return cond;
10599 +}
10600 +
10601 +static inline
10602 +void __vx_cres_fixup(struct _vx_limit *limit, int res, rlim_t value)
10603 +{
10604 +       if (!__vx_cres_adjust_max(limit, res, value))
10605 +               __vx_cres_adjust_min(limit, res, value);
10606 +}
10607 +
10608 +
10609 +/*     return values:
10610 +        +1 ... no limit hit
10611 +        -1 ... over soft limit
10612 +         0 ... over hard limit         */
10613 +
10614 +static inline int __vx_cres_avail(struct vx_info *vxi,
10615 +       int res, int num, char *_file, int _line)
10616 +{
10617 +       struct _vx_limit *limit;
10618 +       rlim_t value;
10619 +
10620 +       if (VXD_RLIMIT_COND(res))
10621 +               vxlprintk(1, "vx_cres_avail[%5d,%s,%2d]: %5ld/%5ld > %5ld + %5d",
10622 +                       (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
10623 +                       (vxi ? (long)__rlim_soft(&vxi->limit, res) : -1),
10624 +                       (vxi ? (long)__rlim_hard(&vxi->limit, res) : -1),
10625 +                       (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
10626 +                       num, _file, _line);
10627 +       if (!vxi)
10628 +               return 1;
10629 +
10630 +       limit = &vxi->limit;
10631 +       value = __rlim_get(limit, res);
10632 +
10633 +       if (!__vx_cres_adjust_max(limit, res, value))
10634 +               __vx_cres_adjust_min(limit, res, value);
10635 +
10636 +       if (num == 0)
10637 +               return 1;
10638 +
10639 +       if (__rlim_soft(limit, res) == RLIM_INFINITY)
10640 +               return -1;
10641 +       if (value + num <= __rlim_soft(limit, res))
10642 +               return -1;
10643 +
10644 +       if (__rlim_hard(limit, res) == RLIM_INFINITY)
10645 +               return 1;
10646 +       if (value + num <= __rlim_hard(limit, res))
10647 +               return 1;
10648 +
10649 +       __rlim_hit(limit, res);
10650 +       return 0;
10651 +}
10652 +
10653 +
10654 +static const int VLA_RSS[] = { RLIMIT_RSS, VLIMIT_ANON, VLIMIT_MAPPED, 0 };
10655 +
10656 +static inline
10657 +rlim_t __vx_cres_array_sum(struct _vx_limit *limit, const int *array)
10658 +{
10659 +       rlim_t value, sum = 0;
10660 +       int res;
10661 +
10662 +       while ((res = *array++)) {
10663 +               value = __rlim_get(limit, res);
10664 +               __vx_cres_fixup(limit, res, value);
10665 +               sum += value;
10666 +       }
10667 +       return sum;
10668 +}
10669 +
10670 +static inline
10671 +rlim_t __vx_cres_array_fixup(struct _vx_limit *limit, const int *array)
10672 +{
10673 +       rlim_t value = __vx_cres_array_sum(limit, array + 1);
10674 +       int res = *array;
10675 +
10676 +       if (value == __rlim_get(limit, res))
10677 +               return value;
10678 +
10679 +       __rlim_set(limit, res, value);
10680 +       /* now adjust min/max */
10681 +       if (!__vx_cres_adjust_max(limit, res, value))
10682 +               __vx_cres_adjust_min(limit, res, value);
10683 +
10684 +       return value;
10685 +}
10686 +
10687 +static inline int __vx_cres_array_avail(struct vx_info *vxi,
10688 +       const int *array, int num, char *_file, int _line)
10689 +{
10690 +       struct _vx_limit *limit;
10691 +       rlim_t value = 0;
10692 +       int res;
10693 +
10694 +       if (num == 0)
10695 +               return 1;
10696 +       if (!vxi)
10697 +               return 1;
10698 +
10699 +       limit = &vxi->limit;
10700 +       res = *array;
10701 +       value = __vx_cres_array_sum(limit, array + 1);
10702 +
10703 +       __rlim_set(limit, res, value);
10704 +       __vx_cres_fixup(limit, res, value);
10705 +
10706 +       return __vx_cres_avail(vxi, res, num, _file, _line);
10707 +}
10708 +
10709 +
10710 +static inline void vx_limit_fixup(struct _vx_limit *limit, int id)
10711 +{
10712 +       rlim_t value;
10713 +       int res;
10714 +
10715 +       /* complex resources first */
10716 +       if ((id < 0) || (id == RLIMIT_RSS))
10717 +               __vx_cres_array_fixup(limit, VLA_RSS);
10718 +
10719 +       for (res = 0; res < NUM_LIMITS; res++) {
10720 +               if ((id > 0) && (res != id))
10721 +                       continue;
10722 +
10723 +               value = __rlim_get(limit, res);
10724 +               __vx_cres_fixup(limit, res, value);
10725 +
10726 +               /* not supposed to happen, maybe warn? */
10727 +               if (__rlim_rmax(limit, res) > __rlim_hard(limit, res))
10728 +                       __rlim_rmax(limit, res) = __rlim_hard(limit, res);
10729 +       }
10730 +}
10731 +
10732 +
10733 +#endif /* _VSERVER_LIMIT_INT_H */
10734 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/monitor.h linux-4.9/include/linux/vserver/monitor.h
10735 --- linux-4.9/include/linux/vserver/monitor.h   1970-01-01 01:00:00.000000000 +0100
10736 +++ linux-4.9/include/linux/vserver/monitor.h   2021-02-24 15:47:45.097743096 +0100
10737 @@ -0,0 +1,6 @@
10738 +#ifndef _VSERVER_MONITOR_H
10739 +#define _VSERVER_MONITOR_H
10740 +
10741 +#include <uapi/vserver/monitor.h>
10742 +
10743 +#endif /* _VSERVER_MONITOR_H */
10744 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/network.h linux-4.9/include/linux/vserver/network.h
10745 --- linux-4.9/include/linux/vserver/network.h   1970-01-01 01:00:00.000000000 +0100
10746 +++ linux-4.9/include/linux/vserver/network.h   2021-02-24 15:47:45.097743096 +0100
10747 @@ -0,0 +1,76 @@
10748 +#ifndef _VSERVER_NETWORK_H
10749 +#define _VSERVER_NETWORK_H
10750 +
10751 +
10752 +#include <linux/list.h>
10753 +#include <linux/spinlock.h>
10754 +#include <linux/rcupdate.h>
10755 +#include <linux/in.h>
10756 +#include <linux/in6.h>
10757 +#include <asm/atomic.h>
10758 +#include <uapi/vserver/network.h>
10759 +
10760 +struct nx_addr_v4 {
10761 +       struct nx_addr_v4 *next;
10762 +       struct in_addr ip[2];
10763 +       struct in_addr mask;
10764 +       uint16_t type;
10765 +       uint16_t flags;
10766 +};
10767 +
10768 +struct nx_addr_v6 {
10769 +       struct nx_addr_v6 *next;
10770 +       struct in6_addr ip;
10771 +       struct in6_addr mask;
10772 +       uint32_t prefix;
10773 +       uint16_t type;
10774 +       uint16_t flags;
10775 +};
10776 +
10777 +struct nx_info {
10778 +       struct hlist_node nx_hlist;     /* linked list of nxinfos */
10779 +       vnid_t nx_id;                   /* vnet id */
10780 +       atomic_t nx_usecnt;             /* usage count */
10781 +       atomic_t nx_tasks;              /* tasks count */
10782 +       int nx_state;                   /* context state */
10783 +
10784 +       uint64_t nx_flags;              /* network flag word */
10785 +       uint64_t nx_ncaps;              /* network capabilities */
10786 +
10787 +       spinlock_t addr_lock;           /* protect address changes */
10788 +       struct in_addr v4_lback;        /* Loopback address */
10789 +       struct in_addr v4_bcast;        /* Broadcast address */
10790 +       struct nx_addr_v4 v4;           /* First/Single ipv4 address */
10791 +#ifdef CONFIG_IPV6
10792 +       struct nx_addr_v6 v6;           /* First/Single ipv6 address */
10793 +#endif
10794 +       char nx_name[65];               /* network context name */
10795 +};
10796 +
10797 +
10798 +/* status flags */
10799 +
10800 +#define NXS_HASHED      0x0001
10801 +#define NXS_SHUTDOWN    0x0100
10802 +#define NXS_RELEASED    0x8000
10803 +
10804 +extern struct nx_info *lookup_nx_info(int);
10805 +
10806 +extern int get_nid_list(int, unsigned int *, int);
10807 +extern int nid_is_hashed(vnid_t);
10808 +
10809 +extern int nx_migrate_task(struct task_struct *, struct nx_info *);
10810 +
10811 +extern long vs_net_change(struct nx_info *, unsigned int);
10812 +
10813 +struct sock;
10814 +
10815 +
10816 +#define NX_IPV4(n)     ((n)->v4.type != NXA_TYPE_NONE)
10817 +#ifdef  CONFIG_IPV6
10818 +#define NX_IPV6(n)     ((n)->v6.type != NXA_TYPE_NONE)
10819 +#else
10820 +#define NX_IPV6(n)     (0)
10821 +#endif
10822 +
10823 +#endif /* _VSERVER_NETWORK_H */
10824 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/network_cmd.h linux-4.9/include/linux/vserver/network_cmd.h
10825 --- linux-4.9/include/linux/vserver/network_cmd.h       1970-01-01 01:00:00.000000000 +0100
10826 +++ linux-4.9/include/linux/vserver/network_cmd.h       2021-02-24 15:47:45.097743096 +0100
10827 @@ -0,0 +1,37 @@
10828 +#ifndef _VSERVER_NETWORK_CMD_H
10829 +#define _VSERVER_NETWORK_CMD_H
10830 +
10831 +#include <uapi/vserver/network_cmd.h>
10832 +
10833 +extern int vc_task_nid(uint32_t);
10834 +
10835 +extern int vc_nx_info(struct nx_info *, void __user *);
10836 +
10837 +extern int vc_net_create(uint32_t, void __user *);
10838 +extern int vc_net_migrate(struct nx_info *, void __user *);
10839 +
10840 +extern int vc_net_add(struct nx_info *, void __user *);
10841 +extern int vc_net_remove(struct nx_info *, void __user *);
10842 +
10843 +extern int vc_net_add_ipv4_v1(struct nx_info *, void __user *);
10844 +extern int vc_net_add_ipv4(struct nx_info *, void __user *);
10845 +
10846 +extern int vc_net_rem_ipv4_v1(struct nx_info *, void __user *);
10847 +extern int vc_net_rem_ipv4(struct nx_info *, void __user *);
10848 +
10849 +extern int vc_net_add_ipv6(struct nx_info *, void __user *);
10850 +extern int vc_net_remove_ipv6(struct nx_info *, void __user *);
10851 +
10852 +extern int vc_add_match_ipv4(struct nx_info *, void __user *);
10853 +extern int vc_get_match_ipv4(struct nx_info *, void __user *);
10854 +
10855 +extern int vc_add_match_ipv6(struct nx_info *, void __user *);
10856 +extern int vc_get_match_ipv6(struct nx_info *, void __user *);
10857 +
10858 +extern int vc_get_nflags(struct nx_info *, void __user *);
10859 +extern int vc_set_nflags(struct nx_info *, void __user *);
10860 +
10861 +extern int vc_get_ncaps(struct nx_info *, void __user *);
10862 +extern int vc_set_ncaps(struct nx_info *, void __user *);
10863 +
10864 +#endif /* _VSERVER_CONTEXT_CMD_H */
10865 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/percpu.h linux-4.9/include/linux/vserver/percpu.h
10866 --- linux-4.9/include/linux/vserver/percpu.h    1970-01-01 01:00:00.000000000 +0100
10867 +++ linux-4.9/include/linux/vserver/percpu.h    2021-02-24 15:47:45.097743096 +0100
10868 @@ -0,0 +1,14 @@
10869 +#ifndef _VSERVER_PERCPU_H
10870 +#define _VSERVER_PERCPU_H
10871 +
10872 +#include "cvirt_def.h"
10873 +#include "sched_def.h"
10874 +
10875 +struct _vx_percpu {
10876 +       struct _vx_cvirt_pc cvirt;
10877 +       struct _vx_sched_pc sched;
10878 +};
10879 +
10880 +#define        PERCPU_PERCTX   (sizeof(struct _vx_percpu))
10881 +
10882 +#endif /* _VSERVER_PERCPU_H */
10883 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/pid.h linux-4.9/include/linux/vserver/pid.h
10884 --- linux-4.9/include/linux/vserver/pid.h       1970-01-01 01:00:00.000000000 +0100
10885 +++ linux-4.9/include/linux/vserver/pid.h       2021-02-24 15:47:45.097743096 +0100
10886 @@ -0,0 +1,51 @@
10887 +#ifndef _VSERVER_PID_H
10888 +#define _VSERVER_PID_H
10889 +
10890 +/* pid faking stuff */
10891 +
10892 +#define vx_info_map_pid(v, p) \
10893 +       __vx_info_map_pid((v), (p), __func__, __FILE__, __LINE__)
10894 +#define vx_info_map_tgid(v,p)  vx_info_map_pid(v,p)
10895 +#define vx_map_pid(p) vx_info_map_pid(current_vx_info(), p)
10896 +#define vx_map_tgid(p) vx_map_pid(p)
10897 +
10898 +static inline int __vx_info_map_pid(struct vx_info *vxi, int pid,
10899 +       const char *func, const char *file, int line)
10900 +{
10901 +       if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
10902 +               vxfprintk(VXD_CBIT(cvirt, 2),
10903 +                       "vx_map_tgid: %p/%llx: %d -> %d",
10904 +                       vxi, (long long)vxi->vx_flags, pid,
10905 +                       (pid && pid == vxi->vx_initpid) ? 1 : pid,
10906 +                       func, file, line);
10907 +               if (pid == 0)
10908 +                       return 0;
10909 +               if (pid == vxi->vx_initpid)
10910 +                       return 1;
10911 +       }
10912 +       return pid;
10913 +}
10914 +
10915 +#define vx_info_rmap_pid(v, p) \
10916 +       __vx_info_rmap_pid((v), (p), __func__, __FILE__, __LINE__)
10917 +#define vx_rmap_pid(p) vx_info_rmap_pid(current_vx_info(), p)
10918 +#define vx_rmap_tgid(p) vx_rmap_pid(p)
10919 +
10920 +static inline int __vx_info_rmap_pid(struct vx_info *vxi, int pid,
10921 +       const char *func, const char *file, int line)
10922 +{
10923 +       if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
10924 +               vxfprintk(VXD_CBIT(cvirt, 2),
10925 +                       "vx_rmap_tgid: %p/%llx: %d -> %d",
10926 +                       vxi, (long long)vxi->vx_flags, pid,
10927 +                       (pid == 1) ? vxi->vx_initpid : pid,
10928 +                       func, file, line);
10929 +               if ((pid == 1) && vxi->vx_initpid)
10930 +                       return vxi->vx_initpid;
10931 +               if (pid == vxi->vx_initpid)
10932 +                       return ~0U;
10933 +       }
10934 +       return pid;
10935 +}
10936 +
10937 +#endif
10938 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/sched.h linux-4.9/include/linux/vserver/sched.h
10939 --- linux-4.9/include/linux/vserver/sched.h     1970-01-01 01:00:00.000000000 +0100
10940 +++ linux-4.9/include/linux/vserver/sched.h     2021-02-24 15:47:45.097743096 +0100
10941 @@ -0,0 +1,23 @@
10942 +#ifndef _VSERVER_SCHED_H
10943 +#define _VSERVER_SCHED_H
10944 +
10945 +
10946 +#ifdef __KERNEL__
10947 +
10948 +struct timespec;
10949 +
10950 +void vx_vsi_uptime(struct timespec *, struct timespec *);
10951 +
10952 +
10953 +struct vx_info;
10954 +
10955 +void vx_update_load(struct vx_info *);
10956 +
10957 +
10958 +void vx_update_sched_param(struct _vx_sched *sched,
10959 +       struct _vx_sched_pc *sched_pc);
10960 +
10961 +#endif /* __KERNEL__ */
10962 +#else  /* _VSERVER_SCHED_H */
10963 +#warning duplicate inclusion
10964 +#endif /* _VSERVER_SCHED_H */
10965 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/sched_cmd.h linux-4.9/include/linux/vserver/sched_cmd.h
10966 --- linux-4.9/include/linux/vserver/sched_cmd.h 1970-01-01 01:00:00.000000000 +0100
10967 +++ linux-4.9/include/linux/vserver/sched_cmd.h 2021-02-24 15:47:45.097743096 +0100
10968 @@ -0,0 +1,11 @@
10969 +#ifndef _VSERVER_SCHED_CMD_H
10970 +#define _VSERVER_SCHED_CMD_H
10971 +
10972 +
10973 +#include <linux/compiler.h>
10974 +#include <uapi/vserver/sched_cmd.h>
10975 +
10976 +extern int vc_set_prio_bias(struct vx_info *, void __user *);
10977 +extern int vc_get_prio_bias(struct vx_info *, void __user *);
10978 +
10979 +#endif /* _VSERVER_SCHED_CMD_H */
10980 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/sched_def.h linux-4.9/include/linux/vserver/sched_def.h
10981 --- linux-4.9/include/linux/vserver/sched_def.h 1970-01-01 01:00:00.000000000 +0100
10982 +++ linux-4.9/include/linux/vserver/sched_def.h 2021-02-24 15:47:45.097743096 +0100
10983 @@ -0,0 +1,38 @@
10984 +#ifndef _VSERVER_SCHED_DEF_H
10985 +#define _VSERVER_SCHED_DEF_H
10986 +
10987 +#include <linux/spinlock.h>
10988 +#include <linux/jiffies.h>
10989 +#include <linux/cpumask.h>
10990 +#include <asm/atomic.h>
10991 +#include <asm/param.h>
10992 +
10993 +
10994 +/* context sub struct */
10995 +
10996 +struct _vx_sched {
10997 +       int prio_bias;                  /* bias offset for priority */
10998 +
10999 +       cpumask_t update;               /* CPUs which should update */
11000 +};
11001 +
11002 +struct _vx_sched_pc {
11003 +       int prio_bias;                  /* bias offset for priority */
11004 +
11005 +       uint64_t user_ticks;            /* token tick events */
11006 +       uint64_t sys_ticks;             /* token tick events */
11007 +       uint64_t hold_ticks;            /* token ticks paused */
11008 +};
11009 +
11010 +
11011 +#ifdef CONFIG_VSERVER_DEBUG
11012 +
11013 +static inline void __dump_vx_sched(struct _vx_sched *sched)
11014 +{
11015 +       printk("\t_vx_sched:\n");
11016 +       printk("\t priority = %4d\n", sched->prio_bias);
11017 +}
11018 +
11019 +#endif
11020 +
11021 +#endif /* _VSERVER_SCHED_DEF_H */
11022 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/signal.h linux-4.9/include/linux/vserver/signal.h
11023 --- linux-4.9/include/linux/vserver/signal.h    1970-01-01 01:00:00.000000000 +0100
11024 +++ linux-4.9/include/linux/vserver/signal.h    2021-02-24 15:47:45.097743096 +0100
11025 @@ -0,0 +1,14 @@
11026 +#ifndef _VSERVER_SIGNAL_H
11027 +#define _VSERVER_SIGNAL_H
11028 +
11029 +
11030 +#ifdef __KERNEL__
11031 +
11032 +struct vx_info;
11033 +
11034 +int vx_info_kill(struct vx_info *, int, int);
11035 +
11036 +#endif /* __KERNEL__ */
11037 +#else  /* _VSERVER_SIGNAL_H */
11038 +#warning duplicate inclusion
11039 +#endif /* _VSERVER_SIGNAL_H */
11040 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/signal_cmd.h linux-4.9/include/linux/vserver/signal_cmd.h
11041 --- linux-4.9/include/linux/vserver/signal_cmd.h        1970-01-01 01:00:00.000000000 +0100
11042 +++ linux-4.9/include/linux/vserver/signal_cmd.h        2021-02-24 15:47:45.097743096 +0100
11043 @@ -0,0 +1,14 @@
11044 +#ifndef _VSERVER_SIGNAL_CMD_H
11045 +#define _VSERVER_SIGNAL_CMD_H
11046 +
11047 +#include <uapi/vserver/signal_cmd.h>
11048 +
11049 +
11050 +extern int vc_ctx_kill(struct vx_info *, void __user *);
11051 +extern int vc_wait_exit(struct vx_info *, void __user *);
11052 +
11053 +
11054 +extern int vc_get_pflags(uint32_t pid, void __user *);
11055 +extern int vc_set_pflags(uint32_t pid, void __user *);
11056 +
11057 +#endif /* _VSERVER_SIGNAL_CMD_H */
11058 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/space.h linux-4.9/include/linux/vserver/space.h
11059 --- linux-4.9/include/linux/vserver/space.h     1970-01-01 01:00:00.000000000 +0100
11060 +++ linux-4.9/include/linux/vserver/space.h     2021-02-24 15:47:45.097743096 +0100
11061 @@ -0,0 +1,12 @@
11062 +#ifndef _VSERVER_SPACE_H
11063 +#define _VSERVER_SPACE_H
11064 +
11065 +#include <linux/types.h>
11066 +
11067 +struct vx_info;
11068 +
11069 +int vx_set_space(struct vx_info *vxi, unsigned long mask, unsigned index);
11070 +
11071 +#else  /* _VSERVER_SPACE_H */
11072 +#warning duplicate inclusion
11073 +#endif /* _VSERVER_SPACE_H */
11074 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/space_cmd.h linux-4.9/include/linux/vserver/space_cmd.h
11075 --- linux-4.9/include/linux/vserver/space_cmd.h 1970-01-01 01:00:00.000000000 +0100
11076 +++ linux-4.9/include/linux/vserver/space_cmd.h 2021-02-24 15:47:45.097743096 +0100
11077 @@ -0,0 +1,13 @@
11078 +#ifndef _VSERVER_SPACE_CMD_H
11079 +#define _VSERVER_SPACE_CMD_H
11080 +
11081 +#include <uapi/vserver/space_cmd.h>
11082 +
11083 +
11084 +extern int vc_enter_space_v1(struct vx_info *, void __user *);
11085 +extern int vc_set_space_v1(struct vx_info *, void __user *);
11086 +extern int vc_enter_space(struct vx_info *, void __user *);
11087 +extern int vc_set_space(struct vx_info *, void __user *);
11088 +extern int vc_get_space_mask(void __user *, int);
11089 +
11090 +#endif /* _VSERVER_SPACE_CMD_H */
11091 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/switch.h linux-4.9/include/linux/vserver/switch.h
11092 --- linux-4.9/include/linux/vserver/switch.h    1970-01-01 01:00:00.000000000 +0100
11093 +++ linux-4.9/include/linux/vserver/switch.h    2021-02-24 15:47:45.097743096 +0100
11094 @@ -0,0 +1,8 @@
11095 +#ifndef _VSERVER_SWITCH_H
11096 +#define _VSERVER_SWITCH_H
11097 +
11098 +
11099 +#include <linux/errno.h>
11100 +#include <uapi/vserver/switch.h>
11101 +
11102 +#endif /* _VSERVER_SWITCH_H */
11103 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/tag.h linux-4.9/include/linux/vserver/tag.h
11104 --- linux-4.9/include/linux/vserver/tag.h       1970-01-01 01:00:00.000000000 +0100
11105 +++ linux-4.9/include/linux/vserver/tag.h       2021-02-24 15:47:45.097743096 +0100
11106 @@ -0,0 +1,160 @@
11107 +#ifndef _DX_TAG_H
11108 +#define _DX_TAG_H
11109 +
11110 +#include <linux/types.h>
11111 +#include <linux/uidgid.h>
11112 +
11113 +
11114 +#define DX_TAG(in)     (IS_TAGGED(in))
11115 +
11116 +
11117 +#ifdef CONFIG_TAG_NFSD
11118 +#define DX_TAG_NFSD    1
11119 +#else
11120 +#define DX_TAG_NFSD    0
11121 +#endif
11122 +
11123 +
11124 +#ifdef CONFIG_TAGGING_NONE
11125 +
11126 +#define MAX_UID                0xFFFFFFFF
11127 +#define MAX_GID                0xFFFFFFFF
11128 +
11129 +#define INOTAG_TAG(cond, uid, gid, tag)        (0)
11130 +
11131 +#define TAGINO_UID(cond, uid, tag)     (uid)
11132 +#define TAGINO_GID(cond, gid, tag)     (gid)
11133 +
11134 +#endif
11135 +
11136 +
11137 +#ifdef CONFIG_TAGGING_GID16
11138 +
11139 +#define MAX_UID                0xFFFFFFFF
11140 +#define MAX_GID                0x0000FFFF
11141 +
11142 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11143 +       ((cond) ? (((gid) >> 16) & 0xFFFF) : 0)
11144 +
11145 +#define TAGINO_UID(cond, uid, tag)     (uid)
11146 +#define TAGINO_GID(cond, gid, tag)     \
11147 +       ((cond) ? (((gid) & 0xFFFF) | ((tag) << 16)) : (gid))
11148 +
11149 +#endif
11150 +
11151 +
11152 +#ifdef CONFIG_TAGGING_ID24
11153 +
11154 +#define MAX_UID                0x00FFFFFF
11155 +#define MAX_GID                0x00FFFFFF
11156 +
11157 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11158 +       ((cond) ? ((((uid) >> 16) & 0xFF00) | (((gid) >> 24) & 0xFF)) : 0)
11159 +
11160 +#define TAGINO_UID(cond, uid, tag)     \
11161 +       ((cond) ? (((uid) & 0xFFFFFF) | (((tag) & 0xFF00) << 16)) : (uid))
11162 +#define TAGINO_GID(cond, gid, tag)     \
11163 +       ((cond) ? (((gid) & 0xFFFFFF) | (((tag) & 0x00FF) << 24)) : (gid))
11164 +
11165 +#endif
11166 +
11167 +
11168 +#ifdef CONFIG_TAGGING_UID16
11169 +
11170 +#define MAX_UID                0x0000FFFF
11171 +#define MAX_GID                0xFFFFFFFF
11172 +
11173 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11174 +       ((cond) ? (((uid) >> 16) & 0xFFFF) : 0)
11175 +
11176 +#define TAGINO_UID(cond, uid, tag)     \
11177 +       ((cond) ? (((uid) & 0xFFFF) | ((tag) << 16)) : (uid))
11178 +#define TAGINO_GID(cond, gid, tag)     (gid)
11179 +
11180 +#endif
11181 +
11182 +
11183 +#ifdef CONFIG_TAGGING_INTERN
11184 +
11185 +#define MAX_UID                0xFFFFFFFF
11186 +#define MAX_GID                0xFFFFFFFF
11187 +
11188 +#define INOTAG_TAG(cond, uid, gid, tag)        \
11189 +       ((cond) ? (tag) : 0)
11190 +
11191 +#define TAGINO_UID(cond, uid, tag)     (uid)
11192 +#define TAGINO_GID(cond, gid, tag)     (gid)
11193 +
11194 +#endif
11195 +
11196 +
11197 +#ifndef CONFIG_TAGGING_NONE
11198 +#define dx_current_fstag(sb)   \
11199 +       ((sb)->s_flags & MS_TAGGED ? dx_current_tag() : 0)
11200 +#else
11201 +#define dx_current_fstag(sb)   (0)
11202 +#endif
11203 +
11204 +#ifndef CONFIG_TAGGING_INTERN
11205 +#define TAGINO_TAG(cond, tag)  (0)
11206 +#else
11207 +#define TAGINO_TAG(cond, tag)  ((cond) ? (tag) : 0)
11208 +#endif
11209 +
11210 +#define TAGINO_KUID(cond, kuid, ktag)  \
11211 +       KUIDT_INIT(TAGINO_UID(cond, __kuid_val(kuid), __ktag_val(ktag)))
11212 +#define TAGINO_KGID(cond, kgid, ktag)  \
11213 +       KGIDT_INIT(TAGINO_GID(cond, __kgid_val(kgid), __ktag_val(ktag)))
11214 +#define TAGINO_KTAG(cond, ktag)                \
11215 +       KTAGT_INIT(TAGINO_TAG(cond, __ktag_val(ktag)))
11216 +
11217 +
11218 +#define INOTAG_UID(cond, uid, gid)     \
11219 +       ((cond) ? ((uid) & MAX_UID) : (uid))
11220 +#define INOTAG_GID(cond, uid, gid)     \
11221 +       ((cond) ? ((gid) & MAX_GID) : (gid))
11222 +
11223 +#define INOTAG_KUID(cond, kuid, kgid)  \
11224 +       KUIDT_INIT(INOTAG_UID(cond, __kuid_val(kuid), __kgid_val(kgid)))
11225 +#define INOTAG_KGID(cond, kuid, kgid)  \
11226 +       KGIDT_INIT(INOTAG_GID(cond, __kuid_val(kuid), __kgid_val(kgid)))
11227 +#define INOTAG_KTAG(cond, kuid, kgid, ktag) \
11228 +       KTAGT_INIT(INOTAG_TAG(cond, \
11229 +               __kuid_val(kuid), __kgid_val(kgid), __ktag_val(ktag)))
11230 +
11231 +
11232 +static inline uid_t dx_map_uid(uid_t uid)
11233 +{
11234 +       if ((uid > MAX_UID) && (uid != -1))
11235 +               uid = -2;
11236 +       return (uid & MAX_UID);
11237 +}
11238 +
11239 +static inline gid_t dx_map_gid(gid_t gid)
11240 +{
11241 +       if ((gid > MAX_GID) && (gid != -1))
11242 +               gid = -2;
11243 +       return (gid & MAX_GID);
11244 +}
11245 +
11246 +struct peer_tag {
11247 +       int32_t xid;
11248 +       int32_t nid;
11249 +};
11250 +
11251 +#define dx_notagcheck(sb) ((sb) && ((sb)->s_flags & MS_NOTAGCHECK))
11252 +
11253 +int dx_parse_tag(char *string, vtag_t *tag, int remove, int *mnt_flags,
11254 +                unsigned long *flags);
11255 +
11256 +#ifdef CONFIG_PROPAGATE
11257 +
11258 +void __dx_propagate_tag(struct nameidata *nd, struct inode *inode);
11259 +
11260 +#define dx_propagate_tag(n, i) __dx_propagate_tag(n, i)
11261 +
11262 +#else
11263 +#define dx_propagate_tag(n, i) do { } while (0)
11264 +#endif
11265 +
11266 +#endif /* _DX_TAG_H */
11267 diff -urNp -x '*.orig' linux-4.9/include/linux/vserver/tag_cmd.h linux-4.9/include/linux/vserver/tag_cmd.h
11268 --- linux-4.9/include/linux/vserver/tag_cmd.h   1970-01-01 01:00:00.000000000 +0100
11269 +++ linux-4.9/include/linux/vserver/tag_cmd.h   2021-02-24 15:47:45.097743096 +0100
11270 @@ -0,0 +1,10 @@
11271 +#ifndef _VSERVER_TAG_CMD_H
11272 +#define _VSERVER_TAG_CMD_H
11273 +
11274 +#include <uapi/vserver/tag_cmd.h>
11275 +
11276 +extern int vc_task_tag(uint32_t);
11277 +
11278 +extern int vc_tag_migrate(uint32_t);
11279 +
11280 +#endif /* _VSERVER_TAG_CMD_H */
11281 diff -urNp -x '*.orig' linux-4.9/include/net/addrconf.h linux-4.9/include/net/addrconf.h
11282 --- linux-4.9/include/net/addrconf.h    2021-02-24 15:47:32.424013281 +0100
11283 +++ linux-4.9/include/net/addrconf.h    2021-02-24 15:47:45.101076533 +0100
11284 @@ -85,7 +85,7 @@ struct inet6_ifaddr *ipv6_get_ifaddr(str
11285
11286  int ipv6_dev_get_saddr(struct net *net, const struct net_device *dev,
11287                        const struct in6_addr *daddr, unsigned int srcprefs,
11288 -                      struct in6_addr *saddr);
11289 +                      struct in6_addr *saddr, struct nx_info *nxi);
11290  int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr,
11291                       u32 banned_flags);
11292  int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
11293 diff -urNp -x '*.orig' linux-4.9/include/net/af_unix.h linux-4.9/include/net/af_unix.h
11294 --- linux-4.9/include/net/af_unix.h     2016-12-11 20:17:54.000000000 +0100
11295 +++ linux-4.9/include/net/af_unix.h     2021-02-24 15:47:45.101076533 +0100
11296 @@ -4,6 +4,7 @@
11297  #include <linux/socket.h>
11298  #include <linux/un.h>
11299  #include <linux/mutex.h>
11300 +// #include <linux/vs_base.h>
11301  #include <net/sock.h>
11302
11303  void unix_inflight(struct user_struct *user, struct file *fp);
11304 diff -urNp -x '*.orig' linux-4.9/include/net/inet_timewait_sock.h linux-4.9/include/net/inet_timewait_sock.h
11305 --- linux-4.9/include/net/inet_timewait_sock.h  2021-02-24 15:47:32.427346719 +0100
11306 +++ linux-4.9/include/net/inet_timewait_sock.h  2021-02-24 15:47:45.101076533 +0100
11307 @@ -72,6 +72,10 @@ struct inet_timewait_sock {
11308  #define tw_num                 __tw_common.skc_num
11309  #define tw_cookie              __tw_common.skc_cookie
11310  #define tw_dr                  __tw_common.skc_tw_dr
11311 +#define tw_xid                 __tw_common.skc_xid
11312 +#define tw_vx_info             __tw_common.skc_vx_info
11313 +#define tw_nid                 __tw_common.skc_nid
11314 +#define tw_nx_info             __tw_common.skc_nx_info
11315
11316         int                     tw_timeout;
11317         volatile unsigned char  tw_substate;
11318 diff -urNp -x '*.orig' linux-4.9/include/net/ip6_route.h linux-4.9/include/net/ip6_route.h
11319 --- linux-4.9/include/net/ip6_route.h   2021-02-24 15:47:32.427346719 +0100
11320 +++ linux-4.9/include/net/ip6_route.h   2021-02-24 15:47:45.101076533 +0100
11321 @@ -26,6 +26,7 @@ struct route_info {
11322  #include <linux/ip.h>
11323  #include <linux/ipv6.h>
11324  #include <linux/route.h>
11325 +#include <linux/vs_inet6.h>
11326
11327  #define RT6_LOOKUP_F_IFACE             0x00000001
11328  #define RT6_LOOKUP_F_REACHABLE         0x00000002
11329 @@ -98,17 +99,19 @@ int ip6_del_rt(struct rt6_info *);
11330  static inline int ip6_route_get_saddr(struct net *net, struct rt6_info *rt,
11331                                       const struct in6_addr *daddr,
11332                                       unsigned int prefs,
11333 -                                     struct in6_addr *saddr)
11334 +                                     struct in6_addr *saddr,
11335 +                                     struct nx_info *nxi)
11336  {
11337         struct inet6_dev *idev =
11338                         rt ? ip6_dst_idev((struct dst_entry *)rt) : NULL;
11339         int err = 0;
11340
11341 -       if (rt && rt->rt6i_prefsrc.plen)
11342 +       if (rt && rt->rt6i_prefsrc.plen && (!nxi ||
11343 +           v6_addr_in_nx_info(nxi, &rt->rt6i_prefsrc.addr, NXA_TYPE_ADDR)))
11344                 *saddr = rt->rt6i_prefsrc.addr;
11345         else
11346                 err = ipv6_dev_get_saddr(net, idev ? idev->dev : NULL,
11347 -                                        daddr, prefs, saddr);
11348 +                                        daddr, prefs, saddr, nxi);
11349
11350         return err;
11351  }
11352 diff -urNp -x '*.orig' linux-4.9/include/net/route.h linux-4.9/include/net/route.h
11353 --- linux-4.9/include/net/route.h       2021-02-24 15:47:32.434013594 +0100
11354 +++ linux-4.9/include/net/route.h       2021-02-24 15:47:45.101076533 +0100
11355 @@ -226,6 +226,9 @@ static inline void ip_rt_put(struct rtab
11356         dst_release(&rt->dst);
11357  }
11358
11359 +#include <linux/vs_base.h>
11360 +#include <linux/vs_inet.h>
11361 +
11362  #define IPTOS_RT_MASK  (IPTOS_TOS_MASK & ~3)
11363
11364  extern const __u8 ip_tos2prio[16];
11365 @@ -273,6 +276,9 @@ static inline void ip_route_connect_init
11366                            protocol, flow_flags, dst, src, dport, sport);
11367  }
11368
11369 +extern struct rtable *ip_v4_find_src(struct net *net, struct nx_info *,
11370 +       struct flowi4 *);
11371 +
11372  static inline struct rtable *ip_route_connect(struct flowi4 *fl4,
11373                                               __be32 dst, __be32 src, u32 tos,
11374                                               int oif, u8 protocol,
11375 @@ -281,11 +287,25 @@ static inline struct rtable *ip_route_co
11376  {
11377         struct net *net = sock_net(sk);
11378         struct rtable *rt;
11379 +       struct nx_info *nx_info = current_nx_info();
11380
11381         ip_route_connect_init(fl4, dst, src, tos, oif, protocol,
11382                               sport, dport, sk);
11383
11384 -       if (!dst || !src) {
11385 +       if (sk)
11386 +               nx_info = sk->sk_nx_info;
11387 +
11388 +       vxdprintk(VXD_CBIT(net, 4),
11389 +               "ip_route_connect(%p) %p,%p;%lx",
11390 +               sk, nx_info, sk->sk_socket,
11391 +               (sk->sk_socket?sk->sk_socket->flags:0));
11392 +
11393 +       rt = ip_v4_find_src(net, nx_info, fl4);
11394 +       if (IS_ERR(rt))
11395 +               return rt;
11396 +       ip_rt_put(rt);
11397 +
11398 +       if (!fl4->daddr || !fl4->saddr) {
11399                 rt = __ip_route_output_key(net, fl4);
11400                 if (IS_ERR(rt))
11401                         return rt;
11402 diff -urNp -x '*.orig' linux-4.9/include/net/sock.h linux-4.9/include/net/sock.h
11403 --- linux-4.9/include/net/sock.h        2021-02-24 15:47:32.434013594 +0100
11404 +++ linux-4.9/include/net/sock.h        2021-02-24 15:47:45.101076533 +0100
11405 @@ -187,6 +187,10 @@ struct sock_common {
11406         struct in6_addr         skc_v6_daddr;
11407         struct in6_addr         skc_v6_rcv_saddr;
11408  #endif
11409 +       vxid_t                  skc_xid;
11410 +       struct vx_info          *skc_vx_info;
11411 +       vnid_t                  skc_nid;
11412 +       struct nx_info          *skc_nx_info;
11413
11414         atomic64_t              skc_cookie;
11415
11416 @@ -337,8 +341,12 @@ struct sock {
11417  #define sk_prot                        __sk_common.skc_prot
11418  #define sk_net                 __sk_common.skc_net
11419  #define sk_v6_daddr            __sk_common.skc_v6_daddr
11420 -#define sk_v6_rcv_saddr        __sk_common.skc_v6_rcv_saddr
11421 +#define sk_v6_rcv_saddr                __sk_common.skc_v6_rcv_saddr
11422  #define sk_cookie              __sk_common.skc_cookie
11423 +#define sk_xid                 __sk_common.skc_xid
11424 +#define sk_vx_info             __sk_common.skc_vx_info
11425 +#define sk_nid                 __sk_common.skc_nid
11426 +#define sk_nx_info             __sk_common.skc_nx_info
11427  #define sk_incoming_cpu                __sk_common.skc_incoming_cpu
11428  #define sk_flags               __sk_common.skc_flags
11429  #define sk_rxhash              __sk_common.skc_rxhash
11430 diff -urNp -x '*.orig' linux-4.9/include/uapi/Kbuild linux-4.9/include/uapi/Kbuild
11431 --- linux-4.9/include/uapi/Kbuild       2016-12-11 20:17:54.000000000 +0100
11432 +++ linux-4.9/include/uapi/Kbuild       2021-02-24 15:47:45.101076533 +0100
11433 @@ -13,3 +13,4 @@ header-y += drm/
11434  header-y += xen/
11435  header-y += scsi/
11436  header-y += misc/
11437 +header-y += vserver/
11438 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/btrfs_tree.h linux-4.9/include/uapi/linux/btrfs_tree.h
11439 --- linux-4.9/include/uapi/linux/btrfs_tree.h   2021-02-24 15:47:32.444013907 +0100
11440 +++ linux-4.9/include/uapi/linux/btrfs_tree.h   2021-02-24 15:47:45.101076533 +0100
11441 @@ -566,11 +566,14 @@ struct btrfs_inode_item {
11442         /* modification sequence number for NFS */
11443         __le64 sequence;
11444
11445 +       __le16 tag;
11446         /*
11447          * a little future expansion, for more than this we can
11448          * just grow the inode item and version it
11449          */
11450 -       __le64 reserved[4];
11451 +       __le16 reserved16;
11452 +       __le32 reserved32;
11453 +       __le64 reserved[3];
11454         struct btrfs_timespec atime;
11455         struct btrfs_timespec ctime;
11456         struct btrfs_timespec mtime;
11457 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/capability.h linux-4.9/include/uapi/linux/capability.h
11458 --- linux-4.9/include/uapi/linux/capability.h   2016-12-11 20:17:54.000000000 +0100
11459 +++ linux-4.9/include/uapi/linux/capability.h   2021-02-24 15:47:45.101076533 +0100
11460 @@ -257,6 +257,7 @@ struct vfs_cap_data {
11461     arbitrary SCSI commands */
11462  /* Allow setting encryption key on loopback filesystem */
11463  /* Allow setting zone reclaim policy */
11464 +/* Allow the selection of a security context */
11465
11466  #define CAP_SYS_ADMIN        21
11467
11468 @@ -352,7 +353,12 @@ struct vfs_cap_data {
11469
11470  #define CAP_LAST_CAP         CAP_AUDIT_READ
11471
11472 -#define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
11473 +/* Allow context manipulations */
11474 +/* Allow changing context info on files */
11475 +
11476 +#define CAP_CONTEXT         63
11477 +
11478 +#define cap_valid(x) ((x) >= 0 && ((x) <= CAP_LAST_CAP || (x) == CAP_CONTEXT))
11479
11480  /*
11481   * Bit location of each capability (used by user-space library and kernel)
11482 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/fs.h linux-4.9/include/uapi/linux/fs.h
11483 --- linux-4.9/include/uapi/linux/fs.h   2021-02-24 15:47:32.444013907 +0100
11484 +++ linux-4.9/include/uapi/linux/fs.h   2021-02-24 15:47:45.101076533 +0100
11485 @@ -130,6 +130,9 @@ struct inodes_stat_t {
11486  #define MS_I_VERSION   (1<<23) /* Update inode I_version field */
11487  #define MS_STRICTATIME (1<<24) /* Always perform atime updates */
11488  #define MS_LAZYTIME    (1<<25) /* Update the on-disk [acm]times lazily */
11489 +#define MS_TAGGED      (1<<8)  /* use generic inode tagging */
11490 +#define MS_NOTAGCHECK  (1<<9)  /* don't check tags */
11491 +#define MS_TAGID       (1<<26) /* use specific tag for this mount */
11492
11493  /* These sb flags are internal to the kernel */
11494  #define MS_SUBMOUNT     (1<<26)
11495 @@ -313,13 +316,16 @@ struct fscrypt_policy {
11496  #define FS_EA_INODE_FL                 0x00200000 /* Inode used for large EA */
11497  #define FS_EOFBLOCKS_FL                        0x00400000 /* Reserved for ext4 */
11498  #define FS_NOCOW_FL                    0x00800000 /* Do not cow file */
11499 +#define FS_IXUNLINK_FL                 0x08000000 /* Immutable invert on unlink */
11500  #define FS_INLINE_DATA_FL              0x10000000 /* Reserved for ext4 */
11501  #define FS_PROJINHERIT_FL              0x20000000 /* Create with parents projid */
11502  #define FS_RESERVED_FL                 0x80000000 /* reserved for ext2 lib */
11503
11504 -#define FS_FL_USER_VISIBLE             0x0003DFFF /* User visible flags */
11505 -#define FS_FL_USER_MODIFIABLE          0x000380FF /* User modifiable flags */
11506 +#define FS_BARRIER_FL                  0x04000000 /* Barrier for chroot() */
11507 +#define FS_COW_FL                      0x20000000 /* Copy on Write marker */
11508
11509 +#define FS_FL_USER_VISIBLE             0x0103DFFF /* User visible flags */
11510 +#define FS_FL_USER_MODIFIABLE          0x010380FF /* User modifiable flags */
11511
11512  #define SYNC_FILE_RANGE_WAIT_BEFORE    1
11513  #define SYNC_FILE_RANGE_WRITE          2
11514 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/gfs2_ondisk.h linux-4.9/include/uapi/linux/gfs2_ondisk.h
11515 --- linux-4.9/include/uapi/linux/gfs2_ondisk.h  2016-12-11 20:17:54.000000000 +0100
11516 +++ linux-4.9/include/uapi/linux/gfs2_ondisk.h  2021-02-24 15:47:45.104409971 +0100
11517 @@ -225,6 +225,9 @@ enum {
11518         gfs2fl_Sync             = 8,
11519         gfs2fl_System           = 9,
11520         gfs2fl_TopLevel         = 10,
11521 +       gfs2fl_IXUnlink         = 16,
11522 +       gfs2fl_Barrier          = 17,
11523 +       gfs2fl_Cow              = 18,
11524         gfs2fl_TruncInProg      = 29,
11525         gfs2fl_InheritDirectio  = 30,
11526         gfs2fl_InheritJdata     = 31,
11527 @@ -242,6 +245,9 @@ enum {
11528  #define GFS2_DIF_SYNC                  0x00000100
11529  #define GFS2_DIF_SYSTEM                        0x00000200 /* New in gfs2 */
11530  #define GFS2_DIF_TOPDIR                        0x00000400 /* New in gfs2 */
11531 +#define GFS2_DIF_IXUNLINK               0x00010000
11532 +#define GFS2_DIF_BARRIER                0x00020000
11533 +#define GFS2_DIF_COW                    0x00040000
11534  #define GFS2_DIF_TRUNC_IN_PROG         0x20000000 /* New in gfs2 */
11535  #define GFS2_DIF_INHERIT_DIRECTIO      0x40000000 /* only in gfs1 */
11536  #define GFS2_DIF_INHERIT_JDATA         0x80000000
11537 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/if_tun.h linux-4.9/include/uapi/linux/if_tun.h
11538 --- linux-4.9/include/uapi/linux/if_tun.h       2016-12-11 20:17:54.000000000 +0100
11539 +++ linux-4.9/include/uapi/linux/if_tun.h       2021-02-24 15:47:45.104409971 +0100
11540 @@ -56,6 +56,7 @@
11541   */
11542  #define TUNSETVNETBE _IOW('T', 222, int)
11543  #define TUNGETVNETBE _IOR('T', 223, int)
11544 +#define TUNSETNID    _IOW('T', 224, int)
11545
11546  /* TUNSETIFF ifr flags */
11547  #define IFF_TUN                0x0001
11548 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/major.h linux-4.9/include/uapi/linux/major.h
11549 --- linux-4.9/include/uapi/linux/major.h        2016-12-11 20:17:54.000000000 +0100
11550 +++ linux-4.9/include/uapi/linux/major.h        2021-02-24 15:47:45.104409971 +0100
11551 @@ -15,6 +15,7 @@
11552  #define HD_MAJOR               IDE0_MAJOR
11553  #define PTY_SLAVE_MAJOR                3
11554  #define TTY_MAJOR              4
11555 +#define VROOT_MAJOR            4
11556  #define TTYAUX_MAJOR           5
11557  #define LP_MAJOR               6
11558  #define VCS_MAJOR              7
11559 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/nfs_mount.h linux-4.9/include/uapi/linux/nfs_mount.h
11560 --- linux-4.9/include/uapi/linux/nfs_mount.h    2016-12-11 20:17:54.000000000 +0100
11561 +++ linux-4.9/include/uapi/linux/nfs_mount.h    2021-02-24 15:47:45.104409971 +0100
11562 @@ -63,7 +63,8 @@ struct nfs_mount_data {
11563  #define NFS_MOUNT_SECFLAVOUR   0x2000  /* 5 non-text parsed mount data only */
11564  #define NFS_MOUNT_NORDIRPLUS   0x4000  /* 5 */
11565  #define NFS_MOUNT_UNSHARED     0x8000  /* 5 */
11566 -#define NFS_MOUNT_FLAGMASK     0xFFFF
11567 +#define NFS_MOUNT_TAGGED       0x10000 /* context tagging */
11568 +#define NFS_MOUNT_FLAGMASK     0x1FFFF
11569
11570  /* The following are for internal use only */
11571  #define NFS_MOUNT_LOOKUP_CACHE_NONEG   0x10000
11572 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/reboot.h linux-4.9/include/uapi/linux/reboot.h
11573 --- linux-4.9/include/uapi/linux/reboot.h       2016-12-11 20:17:54.000000000 +0100
11574 +++ linux-4.9/include/uapi/linux/reboot.h       2021-02-24 15:47:45.104409971 +0100
11575 @@ -33,7 +33,7 @@
11576  #define        LINUX_REBOOT_CMD_RESTART2       0xA1B2C3D4
11577  #define        LINUX_REBOOT_CMD_SW_SUSPEND     0xD000FCE2
11578  #define        LINUX_REBOOT_CMD_KEXEC          0x45584543
11579 -
11580 +#define        LINUX_REBOOT_CMD_OOM            0xDEADBEEF
11581
11582
11583  #endif /* _UAPI_LINUX_REBOOT_H */
11584 diff -urNp -x '*.orig' linux-4.9/include/uapi/linux/sysctl.h linux-4.9/include/uapi/linux/sysctl.h
11585 --- linux-4.9/include/uapi/linux/sysctl.h       2021-02-24 15:47:32.450680782 +0100
11586 +++ linux-4.9/include/uapi/linux/sysctl.h       2021-02-24 15:47:45.104409971 +0100
11587 @@ -58,6 +58,7 @@ enum
11588         CTL_ABI=9,              /* Binary emulation */
11589         CTL_CPU=10,             /* CPU stuff (speed scaling, etc) */
11590         CTL_ARLAN=254,          /* arlan wireless driver */
11591 +       CTL_VSERVER=4242,       /* Linux-VServer debug */
11592         CTL_S390DBF=5677,       /* s390 debug */
11593         CTL_SUNRPC=7249,        /* sunrpc debug */
11594         CTL_PM=9899,            /* frv power management */
11595 @@ -92,6 +93,7 @@ enum
11596
11597         KERN_PANIC=15,          /* int: panic timeout */
11598         KERN_REALROOTDEV=16,    /* real root device to mount after initrd */
11599 +       KERN_VSHELPER=17,       /* string: path to vshelper policy agent */
11600
11601         KERN_SPARC_REBOOT=21,   /* reboot command on Sparc */
11602         KERN_CTLALTDEL=22,      /* int: allow ctl-alt-del to reboot */
11603 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/Kbuild linux-4.9/include/uapi/vserver/Kbuild
11604 --- linux-4.9/include/uapi/vserver/Kbuild       1970-01-01 01:00:00.000000000 +0100
11605 +++ linux-4.9/include/uapi/vserver/Kbuild       2021-02-24 15:47:45.104409971 +0100
11606 @@ -0,0 +1,9 @@
11607 +
11608 +header-y += context_cmd.h network_cmd.h space_cmd.h \
11609 +       cacct_cmd.h cvirt_cmd.h limit_cmd.h dlimit_cmd.h \
11610 +       inode_cmd.h tag_cmd.h sched_cmd.h signal_cmd.h \
11611 +       debug_cmd.h device_cmd.h
11612 +
11613 +header-y += switch.h context.h network.h monitor.h \
11614 +       limit.h inode.h device.h
11615 +
11616 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/cacct_cmd.h linux-4.9/include/uapi/vserver/cacct_cmd.h
11617 --- linux-4.9/include/uapi/vserver/cacct_cmd.h  1970-01-01 01:00:00.000000000 +0100
11618 +++ linux-4.9/include/uapi/vserver/cacct_cmd.h  2021-02-24 15:47:45.104409971 +0100
11619 @@ -0,0 +1,15 @@
11620 +#ifndef _UAPI_VS_CACCT_CMD_H
11621 +#define _UAPI_VS_CACCT_CMD_H
11622 +
11623 +
11624 +/* virtual host info name commands */
11625 +
11626 +#define VCMD_sock_stat         VC_CMD(VSTAT, 5, 0)
11627 +
11628 +struct vcmd_sock_stat_v0 {
11629 +       uint32_t field;
11630 +       uint32_t count[3];
11631 +       uint64_t total[3];
11632 +};
11633 +
11634 +#endif /* _UAPI_VS_CACCT_CMD_H */
11635 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/context.h linux-4.9/include/uapi/vserver/context.h
11636 --- linux-4.9/include/uapi/vserver/context.h    1970-01-01 01:00:00.000000000 +0100
11637 +++ linux-4.9/include/uapi/vserver/context.h    2021-02-24 15:47:45.104409971 +0100
11638 @@ -0,0 +1,81 @@
11639 +#ifndef _UAPI_VS_CONTEXT_H
11640 +#define _UAPI_VS_CONTEXT_H
11641 +
11642 +#include <linux/types.h>
11643 +#include <linux/capability.h>
11644 +
11645 +
11646 +/* context flags */
11647 +
11648 +#define VXF_INFO_SCHED         0x00000002
11649 +#define VXF_INFO_NPROC         0x00000004
11650 +#define VXF_INFO_PRIVATE       0x00000008
11651 +
11652 +#define VXF_INFO_INIT          0x00000010
11653 +#define VXF_INFO_HIDE          0x00000020
11654 +#define VXF_INFO_ULIMIT                0x00000040
11655 +#define VXF_INFO_NSPACE                0x00000080
11656 +
11657 +#define VXF_SCHED_HARD         0x00000100
11658 +#define VXF_SCHED_PRIO         0x00000200
11659 +#define VXF_SCHED_PAUSE                0x00000400
11660 +
11661 +#define VXF_VIRT_MEM           0x00010000
11662 +#define VXF_VIRT_UPTIME                0x00020000
11663 +#define VXF_VIRT_CPU           0x00040000
11664 +#define VXF_VIRT_LOAD          0x00080000
11665 +#define VXF_VIRT_TIME          0x00100000
11666 +
11667 +#define VXF_HIDE_MOUNT         0x01000000
11668 +/* was VXF_HIDE_NETIF          0x02000000 */
11669 +#define VXF_HIDE_VINFO         0x04000000
11670 +
11671 +#define VXF_STATE_SETUP                (1ULL << 32)
11672 +#define VXF_STATE_INIT         (1ULL << 33)
11673 +#define VXF_STATE_ADMIN                (1ULL << 34)
11674 +
11675 +#define VXF_SC_HELPER          (1ULL << 36)
11676 +#define VXF_REBOOT_KILL                (1ULL << 37)
11677 +#define VXF_PERSISTENT         (1ULL << 38)
11678 +
11679 +#define VXF_FORK_RSS           (1ULL << 48)
11680 +#define VXF_PROLIFIC           (1ULL << 49)
11681 +
11682 +#define VXF_IGNEG_NICE         (1ULL << 52)
11683 +
11684 +#define VXF_ONE_TIME           (0x0007ULL << 32)
11685 +
11686 +#define VXF_INIT_SET           (VXF_STATE_SETUP | VXF_STATE_INIT | VXF_STATE_ADMIN)
11687 +
11688 +
11689 +/* context migration */
11690 +
11691 +#define VXM_SET_INIT           0x00000001
11692 +#define VXM_SET_REAPER         0x00000002
11693 +
11694 +/* context caps */
11695 +
11696 +#define VXC_SET_UTSNAME                0x00000001
11697 +#define VXC_SET_RLIMIT         0x00000002
11698 +#define VXC_FS_SECURITY                0x00000004
11699 +#define VXC_FS_TRUSTED         0x00000008
11700 +#define VXC_TIOCSTI            0x00000010
11701 +
11702 +/* was VXC_RAW_ICMP            0x00000100 */
11703 +#define VXC_SYSLOG             0x00001000
11704 +#define VXC_OOM_ADJUST         0x00002000
11705 +#define VXC_AUDIT_CONTROL      0x00004000
11706 +
11707 +#define VXC_SECURE_MOUNT       0x00010000
11708 +/* #define VXC_SECURE_REMOUNT  0x00020000 */
11709 +#define VXC_BINARY_MOUNT       0x00040000
11710 +#define VXC_DEV_MOUNT          0x00080000
11711 +
11712 +#define VXC_QUOTA_CTL          0x00100000
11713 +#define VXC_ADMIN_MAPPER       0x00200000
11714 +#define VXC_ADMIN_CLOOP                0x00400000
11715 +
11716 +#define VXC_KTHREAD            0x01000000
11717 +#define VXC_NAMESPACE          0x02000000
11718 +
11719 +#endif /* _UAPI_VS_CONTEXT_H */
11720 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/context_cmd.h linux-4.9/include/uapi/vserver/context_cmd.h
11721 --- linux-4.9/include/uapi/vserver/context_cmd.h        1970-01-01 01:00:00.000000000 +0100
11722 +++ linux-4.9/include/uapi/vserver/context_cmd.h        2021-02-24 15:47:45.104409971 +0100
11723 @@ -0,0 +1,115 @@
11724 +#ifndef _UAPI_VS_CONTEXT_CMD_H
11725 +#define _UAPI_VS_CONTEXT_CMD_H
11726 +
11727 +
11728 +/* vinfo commands */
11729 +
11730 +#define VCMD_task_xid          VC_CMD(VINFO, 1, 0)
11731 +
11732 +
11733 +#define VCMD_vx_info           VC_CMD(VINFO, 5, 0)
11734 +
11735 +struct vcmd_vx_info_v0 {
11736 +       uint32_t xid;
11737 +       uint32_t initpid;
11738 +       /* more to come */
11739 +};
11740 +
11741 +
11742 +#define VCMD_ctx_stat          VC_CMD(VSTAT, 0, 0)
11743 +
11744 +struct vcmd_ctx_stat_v0 {
11745 +       uint32_t usecnt;
11746 +       uint32_t tasks;
11747 +       /* more to come */
11748 +};
11749 +
11750 +
11751 +/* context commands */
11752 +
11753 +#define VCMD_ctx_create_v0     VC_CMD(VPROC, 1, 0)
11754 +#define VCMD_ctx_create                VC_CMD(VPROC, 1, 1)
11755 +
11756 +struct vcmd_ctx_create {
11757 +       uint64_t flagword;
11758 +};
11759 +
11760 +#define VCMD_ctx_migrate_v0    VC_CMD(PROCMIG, 1, 0)
11761 +#define VCMD_ctx_migrate       VC_CMD(PROCMIG, 1, 1)
11762 +
11763 +struct vcmd_ctx_migrate {
11764 +       uint64_t flagword;
11765 +};
11766 +
11767 +
11768 +
11769 +/* flag commands */
11770 +
11771 +#define VCMD_get_cflags                VC_CMD(FLAGS, 1, 0)
11772 +#define VCMD_set_cflags                VC_CMD(FLAGS, 2, 0)
11773 +
11774 +struct vcmd_ctx_flags_v0 {
11775 +       uint64_t flagword;
11776 +       uint64_t mask;
11777 +};
11778 +
11779 +
11780 +
11781 +/* context caps commands */
11782 +
11783 +#define VCMD_get_ccaps         VC_CMD(FLAGS, 3, 1)
11784 +#define VCMD_set_ccaps         VC_CMD(FLAGS, 4, 1)
11785 +
11786 +struct vcmd_ctx_caps_v1 {
11787 +       uint64_t ccaps;
11788 +       uint64_t cmask;
11789 +};
11790 +
11791 +
11792 +
11793 +/* bcaps commands */
11794 +
11795 +#define VCMD_get_bcaps         VC_CMD(FLAGS, 9, 0)
11796 +#define VCMD_set_bcaps         VC_CMD(FLAGS, 10, 0)
11797 +
11798 +struct vcmd_bcaps {
11799 +       uint64_t bcaps;
11800 +       uint64_t bmask;
11801 +};
11802 +
11803 +
11804 +
11805 +/* umask commands */
11806 +
11807 +#define VCMD_get_umask         VC_CMD(FLAGS, 13, 0)
11808 +#define VCMD_set_umask         VC_CMD(FLAGS, 14, 0)
11809 +
11810 +struct vcmd_umask {
11811 +       uint64_t umask;
11812 +       uint64_t mask;
11813 +};
11814 +
11815 +
11816 +
11817 +/* wmask commands */
11818 +
11819 +#define VCMD_get_wmask         VC_CMD(FLAGS, 15, 0)
11820 +#define VCMD_set_wmask         VC_CMD(FLAGS, 16, 0)
11821 +
11822 +struct vcmd_wmask {
11823 +       uint64_t wmask;
11824 +       uint64_t mask;
11825 +};
11826 +
11827 +
11828 +
11829 +/* OOM badness */
11830 +
11831 +#define VCMD_get_badness       VC_CMD(MEMCTRL, 5, 0)
11832 +#define VCMD_set_badness       VC_CMD(MEMCTRL, 6, 0)
11833 +
11834 +struct vcmd_badness_v0 {
11835 +       int64_t bias;
11836 +};
11837 +
11838 +#endif /* _UAPI_VS_CONTEXT_CMD_H */
11839 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/cvirt_cmd.h linux-4.9/include/uapi/vserver/cvirt_cmd.h
11840 --- linux-4.9/include/uapi/vserver/cvirt_cmd.h  1970-01-01 01:00:00.000000000 +0100
11841 +++ linux-4.9/include/uapi/vserver/cvirt_cmd.h  2021-02-24 15:47:45.104409971 +0100
11842 @@ -0,0 +1,41 @@
11843 +#ifndef _UAPI_VS_CVIRT_CMD_H
11844 +#define _UAPI_VS_CVIRT_CMD_H
11845 +
11846 +
11847 +/* virtual host info name commands */
11848 +
11849 +#define VCMD_set_vhi_name      VC_CMD(VHOST, 1, 0)
11850 +#define VCMD_get_vhi_name      VC_CMD(VHOST, 2, 0)
11851 +
11852 +struct vcmd_vhi_name_v0 {
11853 +       uint32_t field;
11854 +       char name[65];
11855 +};
11856 +
11857 +
11858 +enum vhi_name_field {
11859 +       VHIN_CONTEXT = 0,
11860 +       VHIN_SYSNAME,
11861 +       VHIN_NODENAME,
11862 +       VHIN_RELEASE,
11863 +       VHIN_VERSION,
11864 +       VHIN_MACHINE,
11865 +       VHIN_DOMAINNAME,
11866 +};
11867 +
11868 +
11869 +
11870 +#define VCMD_virt_stat         VC_CMD(VSTAT, 3, 0)
11871 +
11872 +struct vcmd_virt_stat_v0 {
11873 +       uint64_t offset;
11874 +       uint64_t uptime;
11875 +       uint32_t nr_threads;
11876 +       uint32_t nr_running;
11877 +       uint32_t nr_uninterruptible;
11878 +       uint32_t nr_onhold;
11879 +       uint32_t nr_forks;
11880 +       uint32_t load[3];
11881 +};
11882 +
11883 +#endif /* _UAPI_VS_CVIRT_CMD_H */
11884 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/debug_cmd.h linux-4.9/include/uapi/vserver/debug_cmd.h
11885 --- linux-4.9/include/uapi/vserver/debug_cmd.h  1970-01-01 01:00:00.000000000 +0100
11886 +++ linux-4.9/include/uapi/vserver/debug_cmd.h  2021-02-24 15:47:45.104409971 +0100
11887 @@ -0,0 +1,24 @@
11888 +#ifndef _UAPI_VS_DEBUG_CMD_H
11889 +#define _UAPI_VS_DEBUG_CMD_H
11890 +
11891 +
11892 +/* debug commands */
11893 +
11894 +#define VCMD_dump_history      VC_CMD(DEBUG, 1, 0)
11895 +
11896 +#define VCMD_read_history      VC_CMD(DEBUG, 5, 0)
11897 +#define VCMD_read_monitor      VC_CMD(DEBUG, 6, 0)
11898 +
11899 +struct  vcmd_read_history_v0 {
11900 +       uint32_t index;
11901 +       uint32_t count;
11902 +       char __user *data;
11903 +};
11904 +
11905 +struct  vcmd_read_monitor_v0 {
11906 +       uint32_t index;
11907 +       uint32_t count;
11908 +       char __user *data;
11909 +};
11910 +
11911 +#endif /* _UAPI_VS_DEBUG_CMD_H */
11912 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/device.h linux-4.9/include/uapi/vserver/device.h
11913 --- linux-4.9/include/uapi/vserver/device.h     1970-01-01 01:00:00.000000000 +0100
11914 +++ linux-4.9/include/uapi/vserver/device.h     2021-02-24 15:47:45.104409971 +0100
11915 @@ -0,0 +1,12 @@
11916 +#ifndef _UAPI_VS_DEVICE_H
11917 +#define _UAPI_VS_DEVICE_H
11918 +
11919 +
11920 +#define DATTR_CREATE   0x00000001
11921 +#define DATTR_OPEN     0x00000002
11922 +
11923 +#define DATTR_REMAP    0x00000010
11924 +
11925 +#define DATTR_MASK     0x00000013
11926 +
11927 +#endif /* _UAPI_VS_DEVICE_H */
11928 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/device_cmd.h linux-4.9/include/uapi/vserver/device_cmd.h
11929 --- linux-4.9/include/uapi/vserver/device_cmd.h 1970-01-01 01:00:00.000000000 +0100
11930 +++ linux-4.9/include/uapi/vserver/device_cmd.h 2021-02-24 15:47:45.104409971 +0100
11931 @@ -0,0 +1,16 @@
11932 +#ifndef _UAPI_VS_DEVICE_CMD_H
11933 +#define _UAPI_VS_DEVICE_CMD_H
11934 +
11935 +
11936 +/*  device vserver commands */
11937 +
11938 +#define VCMD_set_mapping       VC_CMD(DEVICE, 1, 0)
11939 +#define VCMD_unset_mapping     VC_CMD(DEVICE, 2, 0)
11940 +
11941 +struct vcmd_set_mapping_v0 {
11942 +       const char __user *device;
11943 +       const char __user *target;
11944 +       uint32_t flags;
11945 +};
11946 +
11947 +#endif /* _UAPI_VS_DEVICE_CMD_H */
11948 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/dlimit_cmd.h linux-4.9/include/uapi/vserver/dlimit_cmd.h
11949 --- linux-4.9/include/uapi/vserver/dlimit_cmd.h 1970-01-01 01:00:00.000000000 +0100
11950 +++ linux-4.9/include/uapi/vserver/dlimit_cmd.h 2021-02-24 15:47:45.104409971 +0100
11951 @@ -0,0 +1,67 @@
11952 +#ifndef _UAPI_VS_DLIMIT_CMD_H
11953 +#define _UAPI_VS_DLIMIT_CMD_H
11954 +
11955 +
11956 +/*  dlimit vserver commands */
11957 +
11958 +#define VCMD_add_dlimit                VC_CMD(DLIMIT, 1, 0)
11959 +#define VCMD_rem_dlimit                VC_CMD(DLIMIT, 2, 0)
11960 +
11961 +#define VCMD_set_dlimit                VC_CMD(DLIMIT, 5, 0)
11962 +#define VCMD_get_dlimit                VC_CMD(DLIMIT, 6, 0)
11963 +
11964 +struct vcmd_ctx_dlimit_base_v0 {
11965 +       const char __user *name;
11966 +       uint32_t flags;
11967 +};
11968 +
11969 +struct vcmd_ctx_dlimit_v0 {
11970 +       const char __user *name;
11971 +       uint32_t space_used;                    /* used space in kbytes */
11972 +       uint32_t space_total;                   /* maximum space in kbytes */
11973 +       uint32_t inodes_used;                   /* used inodes */
11974 +       uint32_t inodes_total;                  /* maximum inodes */
11975 +       uint32_t reserved;                      /* reserved for root in % */
11976 +       uint32_t flags;
11977 +};
11978 +
11979 +#define CDLIM_UNSET            ((uint32_t)0UL)
11980 +#define CDLIM_INFINITY         ((uint32_t)~0UL)
11981 +#define CDLIM_KEEP             ((uint32_t)~1UL)
11982 +
11983 +#define DLIME_UNIT     0
11984 +#define DLIME_KILO     1
11985 +#define DLIME_MEGA     2
11986 +#define DLIME_GIGA     3
11987 +
11988 +#define DLIMF_SHIFT    0x10
11989 +
11990 +#define DLIMS_USED     0
11991 +#define DLIMS_TOTAL    2
11992 +
11993 +static inline
11994 +uint64_t dlimit_space_32to64(uint32_t val, uint32_t flags, int shift)
11995 +{
11996 +       int exp = (flags & DLIMF_SHIFT) ?
11997 +               (flags >> shift) & DLIME_GIGA : DLIME_KILO;
11998 +       return ((uint64_t)val) << (10 * exp);
11999 +}
12000 +
12001 +static inline
12002 +uint32_t dlimit_space_64to32(uint64_t val, uint32_t *flags, int shift)
12003 +{
12004 +       int exp = 0;
12005 +
12006 +       if (*flags & DLIMF_SHIFT) {
12007 +               while (val > (1LL << 32) && (exp < 3)) {
12008 +                       val >>= 10;
12009 +                       exp++;
12010 +               }
12011 +               *flags &= ~(DLIME_GIGA << shift);
12012 +               *flags |= exp << shift;
12013 +       } else
12014 +               val >>= 10;
12015 +       return val;
12016 +}
12017 +
12018 +#endif /* _UAPI_VS_DLIMIT_CMD_H */
12019 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/inode.h linux-4.9/include/uapi/vserver/inode.h
12020 --- linux-4.9/include/uapi/vserver/inode.h      1970-01-01 01:00:00.000000000 +0100
12021 +++ linux-4.9/include/uapi/vserver/inode.h      2021-02-24 15:47:45.104409971 +0100
12022 @@ -0,0 +1,23 @@
12023 +#ifndef _UAPI_VS_INODE_H
12024 +#define _UAPI_VS_INODE_H
12025 +
12026 +
12027 +#define IATTR_TAG      0x01000000
12028 +
12029 +#define IATTR_ADMIN    0x00000001
12030 +#define IATTR_WATCH    0x00000002
12031 +#define IATTR_HIDE     0x00000004
12032 +#define IATTR_FLAGS    0x00000007
12033 +
12034 +#define IATTR_BARRIER  0x00010000
12035 +#define IATTR_IXUNLINK 0x00020000
12036 +#define IATTR_IMMUTABLE 0x00040000
12037 +#define IATTR_COW      0x00080000
12038 +
12039 +
12040 +/* inode ioctls */
12041 +
12042 +#define FIOC_GETXFLG   _IOR('x', 5, long)
12043 +#define FIOC_SETXFLG   _IOW('x', 6, long)
12044 +
12045 +#endif /* _UAPI_VS_INODE_H */
12046 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/inode_cmd.h linux-4.9/include/uapi/vserver/inode_cmd.h
12047 --- linux-4.9/include/uapi/vserver/inode_cmd.h  1970-01-01 01:00:00.000000000 +0100
12048 +++ linux-4.9/include/uapi/vserver/inode_cmd.h  2021-02-24 15:47:45.104409971 +0100
12049 @@ -0,0 +1,26 @@
12050 +#ifndef _UAPI_VS_INODE_CMD_H
12051 +#define _UAPI_VS_INODE_CMD_H
12052 +
12053 +
12054 +/*  inode vserver commands */
12055 +
12056 +#define VCMD_get_iattr         VC_CMD(INODE, 1, 1)
12057 +#define VCMD_set_iattr         VC_CMD(INODE, 2, 1)
12058 +
12059 +#define VCMD_fget_iattr                VC_CMD(INODE, 3, 0)
12060 +#define VCMD_fset_iattr                VC_CMD(INODE, 4, 0)
12061 +
12062 +struct vcmd_ctx_iattr_v1 {
12063 +       const char __user *name;
12064 +       uint32_t tag;
12065 +       uint32_t flags;
12066 +       uint32_t mask;
12067 +};
12068 +
12069 +struct vcmd_ctx_fiattr_v0 {
12070 +       uint32_t tag;
12071 +       uint32_t flags;
12072 +       uint32_t mask;
12073 +};
12074 +
12075 +#endif /* _UAPI_VS_INODE_CMD_H */
12076 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/limit.h linux-4.9/include/uapi/vserver/limit.h
12077 --- linux-4.9/include/uapi/vserver/limit.h      1970-01-01 01:00:00.000000000 +0100
12078 +++ linux-4.9/include/uapi/vserver/limit.h      2021-02-24 15:47:45.104409971 +0100
12079 @@ -0,0 +1,14 @@
12080 +#ifndef _UAPI_VS_LIMIT_H
12081 +#define _UAPI_VS_LIMIT_H
12082 +
12083 +
12084 +#define VLIMIT_NSOCK   16
12085 +#define VLIMIT_OPENFD  17
12086 +#define VLIMIT_ANON    18
12087 +#define VLIMIT_SHMEM   19
12088 +#define VLIMIT_SEMARY  20
12089 +#define VLIMIT_NSEMS   21
12090 +#define VLIMIT_DENTRY  22
12091 +#define VLIMIT_MAPPED  23
12092 +
12093 +#endif /* _UAPI_VS_LIMIT_H */
12094 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/limit_cmd.h linux-4.9/include/uapi/vserver/limit_cmd.h
12095 --- linux-4.9/include/uapi/vserver/limit_cmd.h  1970-01-01 01:00:00.000000000 +0100
12096 +++ linux-4.9/include/uapi/vserver/limit_cmd.h  2021-02-24 15:47:45.104409971 +0100
12097 @@ -0,0 +1,40 @@
12098 +#ifndef _UAPI_VS_LIMIT_CMD_H
12099 +#define _UAPI_VS_LIMIT_CMD_H
12100 +
12101 +
12102 +/*  rlimit vserver commands */
12103 +
12104 +#define VCMD_get_rlimit                VC_CMD(RLIMIT, 1, 0)
12105 +#define VCMD_set_rlimit                VC_CMD(RLIMIT, 2, 0)
12106 +#define VCMD_get_rlimit_mask   VC_CMD(RLIMIT, 3, 0)
12107 +#define VCMD_reset_hits                VC_CMD(RLIMIT, 7, 0)
12108 +#define VCMD_reset_minmax      VC_CMD(RLIMIT, 9, 0)
12109 +
12110 +struct vcmd_ctx_rlimit_v0 {
12111 +       uint32_t id;
12112 +       uint64_t minimum;
12113 +       uint64_t softlimit;
12114 +       uint64_t maximum;
12115 +};
12116 +
12117 +struct vcmd_ctx_rlimit_mask_v0 {
12118 +       uint32_t minimum;
12119 +       uint32_t softlimit;
12120 +       uint32_t maximum;
12121 +};
12122 +
12123 +#define VCMD_rlimit_stat       VC_CMD(VSTAT, 1, 0)
12124 +
12125 +struct vcmd_rlimit_stat_v0 {
12126 +       uint32_t id;
12127 +       uint32_t hits;
12128 +       uint64_t value;
12129 +       uint64_t minimum;
12130 +       uint64_t maximum;
12131 +};
12132 +
12133 +#define CRLIM_UNSET            (0ULL)
12134 +#define CRLIM_INFINITY         (~0ULL)
12135 +#define CRLIM_KEEP             (~1ULL)
12136 +
12137 +#endif /* _UAPI_VS_LIMIT_CMD_H */
12138 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/monitor.h linux-4.9/include/uapi/vserver/monitor.h
12139 --- linux-4.9/include/uapi/vserver/monitor.h    1970-01-01 01:00:00.000000000 +0100
12140 +++ linux-4.9/include/uapi/vserver/monitor.h    2021-02-24 15:47:45.104409971 +0100
12141 @@ -0,0 +1,96 @@
12142 +#ifndef _UAPI_VS_MONITOR_H
12143 +#define _UAPI_VS_MONITOR_H
12144 +
12145 +#include <linux/types.h>
12146 +
12147 +
12148 +enum {
12149 +       VXM_UNUSED = 0,
12150 +
12151 +       VXM_SYNC = 0x10,
12152 +
12153 +       VXM_UPDATE = 0x20,
12154 +       VXM_UPDATE_1,
12155 +       VXM_UPDATE_2,
12156 +
12157 +       VXM_RQINFO_1 = 0x24,
12158 +       VXM_RQINFO_2,
12159 +
12160 +       VXM_ACTIVATE = 0x40,
12161 +       VXM_DEACTIVATE,
12162 +       VXM_IDLE,
12163 +
12164 +       VXM_HOLD = 0x44,
12165 +       VXM_UNHOLD,
12166 +
12167 +       VXM_MIGRATE = 0x48,
12168 +       VXM_RESCHED,
12169 +
12170 +       /* all other bits are flags */
12171 +       VXM_SCHED = 0x80,
12172 +};
12173 +
12174 +struct _vxm_update_1 {
12175 +       uint32_t tokens_max;
12176 +       uint32_t fill_rate;
12177 +       uint32_t interval;
12178 +};
12179 +
12180 +struct _vxm_update_2 {
12181 +       uint32_t tokens_min;
12182 +       uint32_t fill_rate;
12183 +       uint32_t interval;
12184 +};
12185 +
12186 +struct _vxm_rqinfo_1 {
12187 +       uint16_t running;
12188 +       uint16_t onhold;
12189 +       uint16_t iowait;
12190 +       uint16_t uintr;
12191 +       uint32_t idle_tokens;
12192 +};
12193 +
12194 +struct _vxm_rqinfo_2 {
12195 +       uint32_t norm_time;
12196 +       uint32_t idle_time;
12197 +       uint32_t idle_skip;
12198 +};
12199 +
12200 +struct _vxm_sched {
12201 +       uint32_t tokens;
12202 +       uint32_t norm_time;
12203 +       uint32_t idle_time;
12204 +};
12205 +
12206 +struct _vxm_task {
12207 +       uint16_t pid;
12208 +       uint16_t state;
12209 +};
12210 +
12211 +struct _vxm_event {
12212 +       uint32_t jif;
12213 +       union {
12214 +               uint32_t seq;
12215 +               uint32_t sec;
12216 +       };
12217 +       union {
12218 +               uint32_t tokens;
12219 +               uint32_t nsec;
12220 +               struct _vxm_task tsk;
12221 +       };
12222 +};
12223 +
12224 +struct _vx_mon_entry {
12225 +       uint16_t type;
12226 +       uint16_t xid;
12227 +       union {
12228 +               struct _vxm_event ev;
12229 +               struct _vxm_sched sd;
12230 +               struct _vxm_update_1 u1;
12231 +               struct _vxm_update_2 u2;
12232 +               struct _vxm_rqinfo_1 q1;
12233 +               struct _vxm_rqinfo_2 q2;
12234 +       };
12235 +};
12236 +
12237 +#endif /* _UAPI_VS_MONITOR_H */
12238 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/network.h linux-4.9/include/uapi/vserver/network.h
12239 --- linux-4.9/include/uapi/vserver/network.h    1970-01-01 01:00:00.000000000 +0100
12240 +++ linux-4.9/include/uapi/vserver/network.h    2021-02-24 15:47:45.104409971 +0100
12241 @@ -0,0 +1,76 @@
12242 +#ifndef _UAPI_VS_NETWORK_H
12243 +#define _UAPI_VS_NETWORK_H
12244 +
12245 +#include <linux/types.h>
12246 +
12247 +
12248 +#define MAX_N_CONTEXT  65535   /* Arbitrary limit */
12249 +
12250 +
12251 +/* network flags */
12252 +
12253 +#define NXF_INFO_PRIVATE       0x00000008
12254 +
12255 +#define NXF_SINGLE_IP          0x00000100
12256 +#define NXF_LBACK_REMAP                0x00000200
12257 +#define NXF_LBACK_ALLOW                0x00000400
12258 +
12259 +#define NXF_HIDE_NETIF         0x02000000
12260 +#define NXF_HIDE_LBACK         0x04000000
12261 +
12262 +#define NXF_STATE_SETUP                (1ULL << 32)
12263 +#define NXF_STATE_ADMIN                (1ULL << 34)
12264 +
12265 +#define NXF_SC_HELPER          (1ULL << 36)
12266 +#define NXF_PERSISTENT         (1ULL << 38)
12267 +
12268 +#define NXF_ONE_TIME           (0x0005ULL << 32)
12269 +
12270 +
12271 +#define        NXF_INIT_SET            (__nxf_init_set())
12272 +
12273 +static inline uint64_t __nxf_init_set(void) {
12274 +       return    NXF_STATE_ADMIN
12275 +#ifdef CONFIG_VSERVER_AUTO_LBACK
12276 +               | NXF_LBACK_REMAP
12277 +               | NXF_HIDE_LBACK
12278 +#endif
12279 +#ifdef CONFIG_VSERVER_AUTO_SINGLE
12280 +               | NXF_SINGLE_IP
12281 +#endif
12282 +               | NXF_HIDE_NETIF;
12283 +}
12284 +
12285 +
12286 +/* network caps */
12287 +
12288 +#define NXC_TUN_CREATE         0x00000001
12289 +
12290 +#define NXC_RAW_ICMP           0x00000100
12291 +
12292 +#define NXC_MULTICAST          0x00001000
12293 +
12294 +
12295 +/* address types */
12296 +
12297 +#define NXA_TYPE_IPV4          0x0001
12298 +#define NXA_TYPE_IPV6          0x0002
12299 +
12300 +#define NXA_TYPE_NONE          0x0000
12301 +#define NXA_TYPE_ANY           0x00FF
12302 +
12303 +#define NXA_TYPE_ADDR          0x0010
12304 +#define NXA_TYPE_MASK          0x0020
12305 +#define NXA_TYPE_RANGE         0x0040
12306 +
12307 +#define NXA_MASK_ALL           (NXA_TYPE_ADDR | NXA_TYPE_MASK | NXA_TYPE_RANGE)
12308 +
12309 +#define NXA_MOD_BCAST          0x0100
12310 +#define NXA_MOD_LBACK          0x0200
12311 +
12312 +#define NXA_LOOPBACK           0x1000
12313 +
12314 +#define NXA_MASK_BIND          (NXA_MASK_ALL | NXA_MOD_BCAST | NXA_MOD_LBACK)
12315 +#define NXA_MASK_SHOW          (NXA_MASK_ALL | NXA_LOOPBACK)
12316 +
12317 +#endif /* _UAPI_VS_NETWORK_H */
12318 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/network_cmd.h linux-4.9/include/uapi/vserver/network_cmd.h
12319 --- linux-4.9/include/uapi/vserver/network_cmd.h        1970-01-01 01:00:00.000000000 +0100
12320 +++ linux-4.9/include/uapi/vserver/network_cmd.h        2021-02-24 15:47:45.104409971 +0100
12321 @@ -0,0 +1,123 @@
12322 +#ifndef _UAPI_VS_NETWORK_CMD_H
12323 +#define _UAPI_VS_NETWORK_CMD_H
12324 +
12325 +
12326 +/* vinfo commands */
12327 +
12328 +#define VCMD_task_nid          VC_CMD(VINFO, 2, 0)
12329 +
12330 +
12331 +#define VCMD_nx_info           VC_CMD(VINFO, 6, 0)
12332 +
12333 +struct vcmd_nx_info_v0 {
12334 +       uint32_t nid;
12335 +       /* more to come */
12336 +};
12337 +
12338 +
12339 +#include <linux/in.h>
12340 +#include <linux/in6.h>
12341 +
12342 +#define VCMD_net_create_v0     VC_CMD(VNET, 1, 0)
12343 +#define VCMD_net_create                VC_CMD(VNET, 1, 1)
12344 +
12345 +struct  vcmd_net_create {
12346 +       uint64_t flagword;
12347 +};
12348 +
12349 +#define VCMD_net_migrate       VC_CMD(NETMIG, 1, 0)
12350 +
12351 +#define VCMD_net_add           VC_CMD(NETALT, 1, 0)
12352 +#define VCMD_net_remove                VC_CMD(NETALT, 2, 0)
12353 +
12354 +struct vcmd_net_addr_v0 {
12355 +       uint16_t type;
12356 +       uint16_t count;
12357 +       struct in_addr ip[4];
12358 +       struct in_addr mask[4];
12359 +};
12360 +
12361 +#define VCMD_net_add_ipv4_v1   VC_CMD(NETALT, 1, 1)
12362 +#define VCMD_net_rem_ipv4_v1   VC_CMD(NETALT, 2, 1)
12363 +
12364 +struct vcmd_net_addr_ipv4_v1 {
12365 +       uint16_t type;
12366 +       uint16_t flags;
12367 +       struct in_addr ip;
12368 +       struct in_addr mask;
12369 +};
12370 +
12371 +#define VCMD_net_add_ipv4      VC_CMD(NETALT, 1, 2)
12372 +#define VCMD_net_rem_ipv4      VC_CMD(NETALT, 2, 2)
12373 +
12374 +struct vcmd_net_addr_ipv4_v2 {
12375 +       uint16_t type;
12376 +       uint16_t flags;
12377 +       struct in_addr ip;
12378 +       struct in_addr ip2;
12379 +       struct in_addr mask;
12380 +};
12381 +
12382 +#define VCMD_net_add_ipv6      VC_CMD(NETALT, 3, 1)
12383 +#define VCMD_net_remove_ipv6   VC_CMD(NETALT, 4, 1)
12384 +
12385 +struct vcmd_net_addr_ipv6_v1 {
12386 +       uint16_t type;
12387 +       uint16_t flags;
12388 +       uint32_t prefix;
12389 +       struct in6_addr ip;
12390 +       struct in6_addr mask;
12391 +};
12392 +
12393 +#define VCMD_add_match_ipv4    VC_CMD(NETALT, 5, 0)
12394 +#define VCMD_get_match_ipv4    VC_CMD(NETALT, 6, 0)
12395 +
12396 +struct vcmd_match_ipv4_v0 {
12397 +       uint16_t type;
12398 +       uint16_t flags;
12399 +       uint16_t parent;
12400 +       uint16_t prefix;
12401 +       struct in_addr ip;
12402 +       struct in_addr ip2;
12403 +       struct in_addr mask;
12404 +};
12405 +
12406 +#define VCMD_add_match_ipv6    VC_CMD(NETALT, 7, 0)
12407 +#define VCMD_get_match_ipv6    VC_CMD(NETALT, 8, 0)
12408 +
12409 +struct vcmd_match_ipv6_v0 {
12410 +       uint16_t type;
12411 +       uint16_t flags;
12412 +       uint16_t parent;
12413 +       uint16_t prefix;
12414 +       struct in6_addr ip;
12415 +       struct in6_addr ip2;
12416 +       struct in6_addr mask;
12417 +};
12418 +
12419 +
12420 +
12421 +
12422 +/* flag commands */
12423 +
12424 +#define VCMD_get_nflags                VC_CMD(FLAGS, 5, 0)
12425 +#define VCMD_set_nflags                VC_CMD(FLAGS, 6, 0)
12426 +
12427 +struct vcmd_net_flags_v0 {
12428 +       uint64_t flagword;
12429 +       uint64_t mask;
12430 +};
12431 +
12432 +
12433 +
12434 +/* network caps commands */
12435 +
12436 +#define VCMD_get_ncaps         VC_CMD(FLAGS, 7, 0)
12437 +#define VCMD_set_ncaps         VC_CMD(FLAGS, 8, 0)
12438 +
12439 +struct vcmd_net_caps_v0 {
12440 +       uint64_t ncaps;
12441 +       uint64_t cmask;
12442 +};
12443 +
12444 +#endif /* _UAPI_VS_NETWORK_CMD_H */
12445 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/sched_cmd.h linux-4.9/include/uapi/vserver/sched_cmd.h
12446 --- linux-4.9/include/uapi/vserver/sched_cmd.h  1970-01-01 01:00:00.000000000 +0100
12447 +++ linux-4.9/include/uapi/vserver/sched_cmd.h  2021-02-24 15:47:45.104409971 +0100
12448 @@ -0,0 +1,13 @@
12449 +#ifndef _UAPI_VS_SCHED_CMD_H
12450 +#define _UAPI_VS_SCHED_CMD_H
12451 +
12452 +
12453 +struct vcmd_prio_bias {
12454 +       int32_t cpu_id;
12455 +       int32_t prio_bias;
12456 +};
12457 +
12458 +#define VCMD_set_prio_bias     VC_CMD(SCHED, 4, 0)
12459 +#define VCMD_get_prio_bias     VC_CMD(SCHED, 5, 0)
12460 +
12461 +#endif /* _UAPI_VS_SCHED_CMD_H */
12462 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/signal_cmd.h linux-4.9/include/uapi/vserver/signal_cmd.h
12463 --- linux-4.9/include/uapi/vserver/signal_cmd.h 1970-01-01 01:00:00.000000000 +0100
12464 +++ linux-4.9/include/uapi/vserver/signal_cmd.h 2021-02-24 15:47:45.107743409 +0100
12465 @@ -0,0 +1,31 @@
12466 +#ifndef _UAPI_VS_SIGNAL_CMD_H
12467 +#define _UAPI_VS_SIGNAL_CMD_H
12468 +
12469 +
12470 +/*  signalling vserver commands */
12471 +
12472 +#define VCMD_ctx_kill          VC_CMD(PROCTRL, 1, 0)
12473 +#define VCMD_wait_exit         VC_CMD(EVENT, 99, 0)
12474 +
12475 +struct vcmd_ctx_kill_v0 {
12476 +       int32_t pid;
12477 +       int32_t sig;
12478 +};
12479 +
12480 +struct vcmd_wait_exit_v0 {
12481 +       int32_t reboot_cmd;
12482 +       int32_t exit_code;
12483 +};
12484 +
12485 +
12486 +/*  process alteration commands */
12487 +
12488 +#define VCMD_get_pflags                VC_CMD(PROCALT, 5, 0)
12489 +#define VCMD_set_pflags                VC_CMD(PROCALT, 6, 0)
12490 +
12491 +struct vcmd_pflags_v0 {
12492 +       uint32_t flagword;
12493 +       uint32_t mask;
12494 +};
12495 +
12496 +#endif /* _UAPI_VS_SIGNAL_CMD_H */
12497 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/space_cmd.h linux-4.9/include/uapi/vserver/space_cmd.h
12498 --- linux-4.9/include/uapi/vserver/space_cmd.h  1970-01-01 01:00:00.000000000 +0100
12499 +++ linux-4.9/include/uapi/vserver/space_cmd.h  2021-02-24 15:47:45.107743409 +0100
12500 @@ -0,0 +1,28 @@
12501 +#ifndef _UAPI_VS_SPACE_CMD_H
12502 +#define _UAPI_VS_SPACE_CMD_H
12503 +
12504 +
12505 +#define VCMD_enter_space_v0    VC_CMD(PROCALT, 1, 0)
12506 +#define VCMD_enter_space_v1    VC_CMD(PROCALT, 1, 1)
12507 +#define VCMD_enter_space       VC_CMD(PROCALT, 1, 2)
12508 +
12509 +#define VCMD_set_space_v0      VC_CMD(PROCALT, 3, 0)
12510 +#define VCMD_set_space_v1      VC_CMD(PROCALT, 3, 1)
12511 +#define VCMD_set_space         VC_CMD(PROCALT, 3, 2)
12512 +
12513 +#define VCMD_get_space_mask_v0 VC_CMD(PROCALT, 4, 0)
12514 +
12515 +#define VCMD_get_space_mask    VC_CMD(VSPACE, 0, 1)
12516 +#define VCMD_get_space_default VC_CMD(VSPACE, 1, 0)
12517 +
12518 +
12519 +struct vcmd_space_mask_v1 {
12520 +       uint64_t mask;
12521 +};
12522 +
12523 +struct vcmd_space_mask_v2 {
12524 +       uint64_t mask;
12525 +       uint32_t index;
12526 +};
12527 +
12528 +#endif /* _UAPI_VS_SPACE_CMD_H */
12529 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/switch.h linux-4.9/include/uapi/vserver/switch.h
12530 --- linux-4.9/include/uapi/vserver/switch.h     1970-01-01 01:00:00.000000000 +0100
12531 +++ linux-4.9/include/uapi/vserver/switch.h     2021-02-24 15:47:45.107743409 +0100
12532 @@ -0,0 +1,90 @@
12533 +#ifndef _UAPI_VS_SWITCH_H
12534 +#define _UAPI_VS_SWITCH_H
12535 +
12536 +#include <linux/types.h>
12537 +
12538 +
12539 +#define VC_CATEGORY(c)         (((c) >> 24) & 0x3F)
12540 +#define VC_COMMAND(c)          (((c) >> 16) & 0xFF)
12541 +#define VC_VERSION(c)          ((c) & 0xFFF)
12542 +
12543 +#define VC_CMD(c, i, v)                ((((VC_CAT_ ## c) & 0x3F) << 24) \
12544 +                               | (((i) & 0xFF) << 16) | ((v) & 0xFFF))
12545 +
12546 +/*
12547 +
12548 +  Syscall Matrix V2.8
12549 +
12550 +        |VERSION|CREATE |MODIFY |MIGRATE|CONTROL|EXPERIM| |SPECIAL|SPECIAL|
12551 +        |STATS  |DESTROY|ALTER  |CHANGE |LIMIT  |TEST   | |       |       |
12552 +        |INFO   |SETUP  |       |MOVE   |       |       | |       |       |
12553 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12554 +  SYSTEM |VERSION|VSETUP |VHOST  |       |       |       | |DEVICE |       |
12555 +  HOST   |     00|     01|     02|     03|     04|     05| |     06|     07|
12556 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12557 +  CPU    |       |VPROC  |PROCALT|PROCMIG|PROCTRL|       | |SCHED. |       |
12558 +  PROCESS|     08|     09|     10|     11|     12|     13| |     14|     15|
12559 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12560 +  MEMORY |       |       |       |       |MEMCTRL|       | |SWAP   |       |
12561 +        |     16|     17|     18|     19|     20|     21| |     22|     23|
12562 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12563 +  NETWORK|       |VNET   |NETALT |NETMIG |NETCTL |       | |SERIAL |       |
12564 +        |     24|     25|     26|     27|     28|     29| |     30|     31|
12565 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12566 +  DISK   |       |       |       |TAGMIG |DLIMIT |       | |INODE  |       |
12567 +  VFS    |     32|     33|     34|     35|     36|     37| |     38|     39|
12568 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12569 +  OTHER  |VSTAT  |       |       |       |       |       | |VINFO  |       |
12570 +        |     40|     41|     42|     43|     44|     45| |     46|     47|
12571 +  =======+=======+=======+=======+=======+=======+=======+ +=======+=======+
12572 +  SPECIAL|EVENT  |       |       |       |FLAGS  |       | |VSPACE |       |
12573 +        |     48|     49|     50|     51|     52|     53| |     54|     55|
12574 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12575 +  SPECIAL|DEBUG  |       |       |       |RLIMIT |SYSCALL| |       |COMPAT |
12576 +        |     56|     57|     58|     59|     60|TEST 61| |     62|     63|
12577 +  -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
12578 +
12579 +*/
12580 +
12581 +#define VC_CAT_VERSION         0
12582 +
12583 +#define VC_CAT_VSETUP          1
12584 +#define VC_CAT_VHOST           2
12585 +
12586 +#define VC_CAT_DEVICE          6
12587 +
12588 +#define VC_CAT_VPROC           9
12589 +#define VC_CAT_PROCALT         10
12590 +#define VC_CAT_PROCMIG         11
12591 +#define VC_CAT_PROCTRL         12
12592 +
12593 +#define VC_CAT_SCHED           14
12594 +#define VC_CAT_MEMCTRL         20
12595 +
12596 +#define VC_CAT_VNET            25
12597 +#define VC_CAT_NETALT          26
12598 +#define VC_CAT_NETMIG          27
12599 +#define VC_CAT_NETCTRL         28
12600 +
12601 +#define VC_CAT_TAGMIG          35
12602 +#define VC_CAT_DLIMIT          36
12603 +#define VC_CAT_INODE           38
12604 +
12605 +#define VC_CAT_VSTAT           40
12606 +#define VC_CAT_VINFO           46
12607 +#define VC_CAT_EVENT           48
12608 +
12609 +#define VC_CAT_FLAGS           52
12610 +#define VC_CAT_VSPACE          54
12611 +#define VC_CAT_DEBUG           56
12612 +#define VC_CAT_RLIMIT          60
12613 +
12614 +#define VC_CAT_SYSTEST         61
12615 +#define VC_CAT_COMPAT          63
12616 +
12617 +/*  query version */
12618 +
12619 +#define VCMD_get_version       VC_CMD(VERSION, 0, 0)
12620 +#define VCMD_get_vci           VC_CMD(VERSION, 1, 0)
12621 +
12622 +#endif /* _UAPI_VS_SWITCH_H */
12623 diff -urNp -x '*.orig' linux-4.9/include/uapi/vserver/tag_cmd.h linux-4.9/include/uapi/vserver/tag_cmd.h
12624 --- linux-4.9/include/uapi/vserver/tag_cmd.h    1970-01-01 01:00:00.000000000 +0100
12625 +++ linux-4.9/include/uapi/vserver/tag_cmd.h    2021-02-24 15:47:45.107743409 +0100
12626 @@ -0,0 +1,14 @@
12627 +#ifndef _UAPI_VS_TAG_CMD_H
12628 +#define _UAPI_VS_TAG_CMD_H
12629 +
12630 +
12631 +/* vinfo commands */
12632 +
12633 +#define VCMD_task_tag          VC_CMD(VINFO, 3, 0)
12634 +
12635 +
12636 +/* context commands */
12637 +
12638 +#define VCMD_tag_migrate       VC_CMD(TAGMIG, 1, 0)
12639 +
12640 +#endif /* _UAPI_VS_TAG_CMD_H */
12641 diff -urNp -x '*.orig' linux-4.9/init/Kconfig linux-4.9/init/Kconfig
12642 --- linux-4.9/init/Kconfig      2021-02-24 15:47:32.454014219 +0100
12643 +++ linux-4.9/init/Kconfig      2021-02-24 15:47:45.107743409 +0100
12644 @@ -959,6 +959,7 @@ config NUMA_BALANCING_DEFAULT_ENABLED
12645  menuconfig CGROUPS
12646         bool "Control Group support"
12647         select KERNFS
12648 +       default y
12649         help
12650           This option adds support for grouping sets of processes together, for
12651           use with process control subsystems such as Cpusets, CFS, memory
12652 diff -urNp -x '*.orig' linux-4.9/init/main.c linux-4.9/init/main.c
12653 --- linux-4.9/init/main.c       2021-02-24 15:47:32.454014219 +0100
12654 +++ linux-4.9/init/main.c       2021-02-24 15:47:45.107743409 +0100
12655 @@ -82,6 +82,7 @@
12656  #include <linux/io.h>
12657  #include <linux/kaiser.h>
12658  #include <linux/cache.h>
12659 +#include <linux/vserver/percpu.h>
12660
12661  #include <asm/io.h>
12662  #include <asm/bugs.h>
12663 diff -urNp -x '*.orig' linux-4.9/ipc/mqueue.c linux-4.9/ipc/mqueue.c
12664 --- linux-4.9/ipc/mqueue.c      2021-02-24 15:47:32.454014219 +0100
12665 +++ linux-4.9/ipc/mqueue.c      2021-02-24 15:47:45.107743409 +0100
12666 @@ -35,6 +35,8 @@
12667  #include <linux/ipc_namespace.h>
12668  #include <linux/user_namespace.h>
12669  #include <linux/slab.h>
12670 +#include <linux/vs_context.h>
12671 +#include <linux/vs_limit.h>
12672
12673  #include <net/sock.h>
12674  #include "util.h"
12675 @@ -75,6 +77,7 @@ struct mqueue_inode_info {
12676         struct pid *notify_owner;
12677         struct user_namespace *notify_user_ns;
12678         struct user_struct *user;       /* user who created, for accounting */
12679 +       struct vx_info *vxi;
12680         struct sock *notify_sock;
12681         struct sk_buff *notify_cookie;
12682
12683 @@ -230,6 +233,7 @@ static struct inode *mqueue_get_inode(st
12684         if (S_ISREG(mode)) {
12685                 struct mqueue_inode_info *info;
12686                 unsigned long mq_bytes, mq_treesize;
12687 +               struct vx_info *vxi = current_vx_info();
12688
12689                 inode->i_fop = &mqueue_file_operations;
12690                 inode->i_size = FILENT_SIZE;
12691 @@ -243,6 +247,7 @@ static struct inode *mqueue_get_inode(st
12692                 info->notify_user_ns = NULL;
12693                 info->qsize = 0;
12694                 info->user = NULL;      /* set when all is ok */
12695 +               info->vxi = NULL;
12696                 info->msg_tree = RB_ROOT;
12697                 info->node_cache = NULL;
12698                 memset(&info->attr, 0, sizeof(info->attr));
12699 @@ -276,17 +281,20 @@ static struct inode *mqueue_get_inode(st
12700
12701                 spin_lock(&mq_lock);
12702                 if (u->mq_bytes + mq_bytes < u->mq_bytes ||
12703 -                   u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) {
12704 +                   u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE) ||
12705 +                   !vx_ipcmsg_avail(vxi, mq_bytes)) {
12706                         spin_unlock(&mq_lock);
12707                         /* mqueue_evict_inode() releases info->messages */
12708                         ret = -EMFILE;
12709                         goto out_inode;
12710                 }
12711                 u->mq_bytes += mq_bytes;
12712 +               vx_ipcmsg_add(vxi, u, mq_bytes);
12713                 spin_unlock(&mq_lock);
12714
12715                 /* all is ok */
12716                 info->user = get_uid(u);
12717 +               info->vxi = get_vx_info(vxi);
12718         } else if (S_ISDIR(mode)) {
12719                 inc_nlink(inode);
12720                 /* Some things misbehave if size == 0 on a directory */
12721 @@ -393,6 +401,7 @@ static void mqueue_evict_inode(struct in
12722
12723         user = info->user;
12724         if (user) {
12725 +               struct vx_info *vxi = info->vxi;
12726                 unsigned long mq_bytes, mq_treesize;
12727
12728                 /* Total amount of bytes accounted for the mqueue */
12729 @@ -405,6 +414,7 @@ static void mqueue_evict_inode(struct in
12730
12731                 spin_lock(&mq_lock);
12732                 user->mq_bytes -= mq_bytes;
12733 +               vx_ipcmsg_sub(vxi, user, mq_bytes);
12734                 /*
12735                  * get_ns_from_inode() ensures that the
12736                  * (ipc_ns = sb->s_fs_info) is either a valid ipc_ns
12737 @@ -414,6 +424,7 @@ static void mqueue_evict_inode(struct in
12738                 if (ipc_ns)
12739                         ipc_ns->mq_queues_count--;
12740                 spin_unlock(&mq_lock);
12741 +               put_vx_info(vxi);
12742                 free_uid(user);
12743         }
12744         if (ipc_ns)
12745 diff -urNp -x '*.orig' linux-4.9/ipc/msg.c linux-4.9/ipc/msg.c
12746 --- linux-4.9/ipc/msg.c 2021-02-24 15:47:32.454014219 +0100
12747 +++ linux-4.9/ipc/msg.c 2021-02-24 15:47:45.107743409 +0100
12748 @@ -37,6 +37,7 @@
12749  #include <linux/rwsem.h>
12750  #include <linux/nsproxy.h>
12751  #include <linux/ipc_namespace.h>
12752 +#include <linux/vs_base.h>
12753
12754  #include <asm/current.h>
12755  #include <linux/uaccess.h>
12756 @@ -124,6 +125,7 @@ static int newque(struct ipc_namespace *
12757
12758         msq->q_perm.mode = msgflg & S_IRWXUGO;
12759         msq->q_perm.key = key;
12760 +       msq->q_perm.xid = vx_current_xid();
12761
12762         msq->q_perm.security = NULL;
12763         retval = security_msg_queue_alloc(msq);
12764 diff -urNp -x '*.orig' linux-4.9/ipc/namespace.c linux-4.9/ipc/namespace.c
12765 --- linux-4.9/ipc/namespace.c   2016-12-11 20:17:54.000000000 +0100
12766 +++ linux-4.9/ipc/namespace.c   2021-02-24 15:47:45.107743409 +0100
12767 @@ -13,6 +13,7 @@
12768  #include <linux/mount.h>
12769  #include <linux/user_namespace.h>
12770  #include <linux/proc_ns.h>
12771 +#include <linux/vserver/global.h>
12772
12773  #include "util.h"
12774
12775 @@ -59,6 +60,7 @@ static struct ipc_namespace *create_ipc_
12776         sem_init_ns(ns);
12777         msg_init_ns(ns);
12778         shm_init_ns(ns);
12779 +       atomic_inc(&vs_global_ipc_ns);
12780
12781         return ns;
12782
12783 @@ -121,6 +123,7 @@ static void free_ipc_ns(struct ipc_names
12784         dec_ipc_namespaces(ns->ucounts);
12785         put_user_ns(ns->user_ns);
12786         ns_free_inum(&ns->ns);
12787 +       atomic_dec(&vs_global_ipc_ns);
12788         kfree(ns);
12789  }
12790
12791 diff -urNp -x '*.orig' linux-4.9/ipc/sem.c linux-4.9/ipc/sem.c
12792 --- linux-4.9/ipc/sem.c 2021-02-24 15:47:32.454014219 +0100
12793 +++ linux-4.9/ipc/sem.c 2021-02-24 15:47:45.107743409 +0100
12794 @@ -85,6 +85,8 @@
12795  #include <linux/rwsem.h>
12796  #include <linux/nsproxy.h>
12797  #include <linux/ipc_namespace.h>
12798 +#include <linux/vs_base.h>
12799 +#include <linux/vs_limit.h>
12800
12801  #include <linux/uaccess.h>
12802  #include "util.h"
12803 @@ -537,6 +539,7 @@ static int newary(struct ipc_namespace *
12804
12805         sma->sem_perm.mode = (semflg & S_IRWXUGO);
12806         sma->sem_perm.key = key;
12807 +       sma->sem_perm.xid = vx_current_xid();
12808
12809         sma->sem_perm.security = NULL;
12810         retval = security_sem_alloc(sma);
12811 @@ -567,6 +570,9 @@ static int newary(struct ipc_namespace *
12812                 return id;
12813         }
12814         ns->used_sems += nsems;
12815 +       /* FIXME: obsoleted? */
12816 +       vx_semary_inc(sma);
12817 +       vx_nsems_add(sma, nsems);
12818
12819         sem_unlock(sma, -1);
12820         rcu_read_unlock();
12821 @@ -1155,6 +1161,9 @@ static void freeary(struct ipc_namespace
12822
12823         wake_up_sem_queue_do(&tasks);
12824         ns->used_sems -= sma->sem_nsems;
12825 +       /* FIXME: obsoleted? */
12826 +       vx_nsems_sub(sma, sma->sem_nsems);
12827 +       vx_semary_dec(sma);
12828         ipc_rcu_putref(sma, sem_rcu_free);
12829  }
12830
12831 diff -urNp -x '*.orig' linux-4.9/ipc/shm.c linux-4.9/ipc/shm.c
12832 --- linux-4.9/ipc/shm.c 2021-02-24 15:47:32.454014219 +0100
12833 +++ linux-4.9/ipc/shm.c 2021-02-24 15:47:45.107743409 +0100
12834 @@ -42,6 +42,8 @@
12835  #include <linux/nsproxy.h>
12836  #include <linux/mount.h>
12837  #include <linux/ipc_namespace.h>
12838 +#include <linux/vs_context.h>
12839 +#include <linux/vs_limit.h>
12840
12841  #include <linux/uaccess.h>
12842
12843 @@ -234,10 +236,14 @@ static void shm_open(struct vm_area_stru
12844  static void shm_destroy(struct ipc_namespace *ns, struct shmid_kernel *shp)
12845  {
12846         struct file *shm_file;
12847 +       struct vx_info *vxi = lookup_vx_info(shp->shm_perm.xid);
12848 +       int numpages = (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
12849
12850         shm_file = shp->shm_file;
12851         shp->shm_file = NULL;
12852 -       ns->shm_tot -= (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
12853 +       vx_ipcshm_sub(vxi, shp, numpages);
12854 +       ns->shm_tot -= numpages;
12855 +
12856         shm_rmid(ns, shp);
12857         shm_unlock(shp);
12858         if (!is_file_hugepages(shm_file))
12859 @@ -246,6 +252,7 @@ static void shm_destroy(struct ipc_names
12860                 user_shm_unlock(i_size_read(file_inode(shm_file)),
12861                                 shp->mlock_user);
12862         fput(shm_file);
12863 +       put_vx_info(vxi);
12864         ipc_rcu_putref(shp, shm_rcu_free);
12865  }
12866
12867 @@ -559,11 +566,15 @@ static int newseg(struct ipc_namespace *
12868                         ns->shm_tot + numpages > ns->shm_ctlall)
12869                 return -ENOSPC;
12870
12871 +       if (!vx_ipcshm_avail(current_vx_info(), numpages))
12872 +               return -ENOSPC;
12873 +
12874         shp = ipc_rcu_alloc(sizeof(*shp));
12875         if (!shp)
12876                 return -ENOMEM;
12877
12878         shp->shm_perm.key = key;
12879 +       shp->shm_perm.xid = vx_current_xid();
12880         shp->shm_perm.mode = (shmflg & S_IRWXUGO);
12881         shp->mlock_user = NULL;
12882
12883 @@ -634,6 +645,7 @@ static int newseg(struct ipc_namespace *
12884
12885         ipc_unlock_object(&shp->shm_perm);
12886         rcu_read_unlock();
12887 +       vx_ipcshm_add(current_vx_info(), key, numpages);
12888         return error;
12889
12890  no_id:
12891 diff -urNp -x '*.orig' linux-4.9/kernel/Makefile linux-4.9/kernel/Makefile
12892 --- linux-4.9/kernel/Makefile   2021-02-24 15:47:32.454014219 +0100
12893 +++ linux-4.9/kernel/Makefile   2021-02-24 15:47:45.111076846 +0100
12894 @@ -40,6 +40,7 @@ obj-y += printk/
12895  obj-y += irq/
12896  obj-y += rcu/
12897  obj-y += livepatch/
12898 +obj-y += vserver/
12899
12900  obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
12901  obj-$(CONFIG_FREEZER) += freezer.o
12902 diff -urNp -x '*.orig' linux-4.9/kernel/auditsc.c linux-4.9/kernel/auditsc.c
12903 --- linux-4.9/kernel/auditsc.c  2021-02-24 15:47:32.457347657 +0100
12904 +++ linux-4.9/kernel/auditsc.c  2021-02-24 15:47:45.107743409 +0100
12905 @@ -1967,7 +1967,7 @@ static int audit_set_loginuid_perm(kuid_
12906         if (is_audit_feature_set(AUDIT_FEATURE_LOGINUID_IMMUTABLE))
12907                 return -EPERM;
12908         /* it is set, you need permission */
12909 -       if (!capable(CAP_AUDIT_CONTROL))
12910 +       if (!vx_capable(CAP_AUDIT_CONTROL, VXC_AUDIT_CONTROL))
12911                 return -EPERM;
12912         /* reject if this is not an unset and we don't allow that */
12913         if (is_audit_feature_set(AUDIT_FEATURE_ONLY_UNSET_LOGINUID) && uid_valid(loginuid))
12914 diff -urNp -x '*.orig' linux-4.9/kernel/capability.c linux-4.9/kernel/capability.c
12915 --- linux-4.9/kernel/capability.c       2021-02-24 15:47:32.460681095 +0100
12916 +++ linux-4.9/kernel/capability.c       2021-02-24 15:47:45.111076846 +0100
12917 @@ -17,6 +17,7 @@
12918  #include <linux/syscalls.h>
12919  #include <linux/pid_namespace.h>
12920  #include <linux/user_namespace.h>
12921 +#include <linux/vs_context.h>
12922  #include <asm/uaccess.h>
12923
12924  /*
12925 @@ -107,6 +108,7 @@ static int cap_validate_magic(cap_user_h
12926         return 0;
12927  }
12928
12929 +
12930  /*
12931   * The only thing that can change the capabilities of the current
12932   * process is the current process. As such, we can't be in this code
12933 @@ -344,6 +346,8 @@ bool has_ns_capability_noaudit(struct ta
12934         return (ret == 0);
12935  }
12936
12937 +#include <linux/vserver/base.h>
12938 +
12939  /**
12940   * has_capability_noaudit - Does a task have a capability (unaudited) in the
12941   * initial user ns
12942 diff -urNp -x '*.orig' linux-4.9/kernel/compat.c linux-4.9/kernel/compat.c
12943 --- linux-4.9/kernel/compat.c   2016-12-11 20:17:54.000000000 +0100
12944 +++ linux-4.9/kernel/compat.c   2021-02-24 15:47:45.111076846 +0100
12945 @@ -27,6 +27,7 @@
12946  #include <linux/times.h>
12947  #include <linux/ptrace.h>
12948  #include <linux/gfp.h>
12949 +#include <linux/vs_time.h>
12950
12951  #include <asm/uaccess.h>
12952
12953 @@ -1059,7 +1060,7 @@ COMPAT_SYSCALL_DEFINE1(stime, compat_tim
12954         if (err)
12955                 return err;
12956
12957 -       do_settimeofday(&tv);
12958 +       vx_settimeofday(&tv);
12959         return 0;
12960  }
12961
12962 diff -urNp -x '*.orig' linux-4.9/kernel/cred.c linux-4.9/kernel/cred.c
12963 --- linux-4.9/kernel/cred.c     2021-02-24 15:47:32.460681095 +0100
12964 +++ linux-4.9/kernel/cred.c     2021-02-24 15:47:45.111076846 +0100
12965 @@ -64,31 +64,6 @@ struct cred init_cred = {
12966         .group_info             = &init_groups,
12967  };
12968
12969 -static inline void set_cred_subscribers(struct cred *cred, int n)
12970 -{
12971 -#ifdef CONFIG_DEBUG_CREDENTIALS
12972 -       atomic_set(&cred->subscribers, n);
12973 -#endif
12974 -}
12975 -
12976 -static inline int read_cred_subscribers(const struct cred *cred)
12977 -{
12978 -#ifdef CONFIG_DEBUG_CREDENTIALS
12979 -       return atomic_read(&cred->subscribers);
12980 -#else
12981 -       return 0;
12982 -#endif
12983 -}
12984 -
12985 -static inline void alter_cred_subscribers(const struct cred *_cred, int n)
12986 -{
12987 -#ifdef CONFIG_DEBUG_CREDENTIALS
12988 -       struct cred *cred = (struct cred *) _cred;
12989 -
12990 -       atomic_add(n, &cred->subscribers);
12991 -#endif
12992 -}
12993 -
12994  /*
12995   * The RCU callback to actually dispose of a set of credentials
12996   */
12997 @@ -243,21 +218,16 @@ error:
12998   *
12999   * Call commit_creds() or abort_creds() to clean up.
13000   */
13001 -struct cred *prepare_creds(void)
13002 +struct cred *__prepare_creds(const struct cred *old)
13003  {
13004 -       struct task_struct *task = current;
13005 -       const struct cred *old;
13006         struct cred *new;
13007
13008 -       validate_process_creds();
13009 -
13010         new = kmem_cache_alloc(cred_jar, GFP_KERNEL);
13011         if (!new)
13012                 return NULL;
13013
13014         kdebug("prepare_creds() alloc %p", new);
13015
13016 -       old = task->cred;
13017         memcpy(new, old, sizeof(struct cred));
13018
13019         new->non_rcu = 0;
13020 @@ -287,6 +257,13 @@ error:
13021         abort_creds(new);
13022         return NULL;
13023  }
13024 +
13025 +struct cred *prepare_creds(void)
13026 +{
13027 +       validate_process_creds();
13028 +
13029 +       return __prepare_creds(current->cred);
13030 +}
13031  EXPORT_SYMBOL(prepare_creds);
13032
13033  /*
13034 diff -urNp -x '*.orig' linux-4.9/kernel/exit.c linux-4.9/kernel/exit.c
13035 --- linux-4.9/kernel/exit.c     2021-02-24 15:47:32.467347970 +0100
13036 +++ linux-4.9/kernel/exit.c     2021-02-24 15:47:45.111076846 +0100
13037 @@ -48,6 +48,10 @@
13038  #include <linux/fs_struct.h>
13039  #include <linux/init_task.h>
13040  #include <linux/perf_event.h>
13041 +#include <linux/vs_limit.h>
13042 +#include <linux/vs_context.h>
13043 +#include <linux/vs_network.h>
13044 +#include <linux/vs_pid.h>
13045  #include <trace/events/sched.h>
13046  #include <linux/hw_breakpoint.h>
13047  #include <linux/oom.h>
13048 @@ -535,15 +539,25 @@ static struct task_struct *find_child_re
13049  {
13050         struct pid_namespace *pid_ns = task_active_pid_ns(father);
13051         struct task_struct *reaper = pid_ns->child_reaper;
13052 +       struct vx_info *vxi = task_get_vx_info(father);
13053         struct task_struct *p, *n;
13054
13055 +       if (vxi) {
13056 +               BUG_ON(!vxi->vx_reaper);
13057 +               if (vxi->vx_reaper != init_pid_ns.child_reaper &&
13058 +                   vxi->vx_reaper != father) {
13059 +                       reaper = vxi->vx_reaper;
13060 +                       goto out_put;
13061 +               }
13062 +       }
13063 +
13064         if (likely(reaper != father))
13065 -               return reaper;
13066 +               goto out_put;
13067
13068         reaper = find_alive_thread(father);
13069         if (reaper) {
13070                 pid_ns->child_reaper = reaper;
13071 -               return reaper;
13072 +               goto out_put;
13073         }
13074
13075         write_unlock_irq(&tasklist_lock);
13076 @@ -560,7 +574,10 @@ static struct task_struct *find_child_re
13077         zap_pid_ns_processes(pid_ns);
13078         write_lock_irq(&tasklist_lock);
13079
13080 -       return father;
13081 +       reaper = father;
13082 +out_put:
13083 +       put_vx_info(vxi);
13084 +       return reaper;
13085  }
13086
13087  /*
13088 @@ -648,9 +665,13 @@ static void forget_original_parent(struc
13089                 return;
13090
13091         reaper = find_new_reaper(father, reaper);
13092 -       list_for_each_entry(p, &father->children, sibling) {
13093 +       for (p = list_first_entry(&father->children, struct task_struct, sibling);
13094 +            &p->sibling != &father->children; ) {
13095 +               struct task_struct *next, *this_reaper = reaper;
13096 +               if (p == reaper)
13097 +                       this_reaper = task_active_pid_ns(reaper)->child_reaper;
13098                 for_each_thread(p, t) {
13099 -                       t->real_parent = reaper;
13100 +                       t->real_parent = this_reaper;
13101                         BUG_ON((!t->ptrace) != (t->parent == father));
13102                         if (likely(!t->ptrace))
13103                                 t->parent = t->real_parent;
13104 @@ -662,10 +683,13 @@ static void forget_original_parent(struc
13105                  * If this is a threaded reparent there is no need to
13106                  * notify anyone anything has happened.
13107                  */
13108 -               if (!same_thread_group(reaper, father))
13109 +               if (!same_thread_group(this_reaper, father))
13110                         reparent_leader(father, p, dead);
13111 +               next = list_next_entry(p, sibling);
13112 +               list_add(&p->sibling, &this_reaper->children);
13113 +               p = next;
13114         }
13115 -       list_splice_tail_init(&father->children, &reaper->children);
13116 +       INIT_LIST_HEAD(&father->children);
13117  }
13118
13119  /*
13120 @@ -843,6 +867,9 @@ void __noreturn do_exit(long code)
13121          */
13122         flush_ptrace_hw_breakpoint(tsk);
13123
13124 +       /* needs to stay before exit_notify() */
13125 +       exit_vx_info_early(tsk, code);
13126 +
13127         TASKS_RCU(preempt_disable());
13128         TASKS_RCU(tasks_rcu_i = __srcu_read_lock(&tasks_rcu_exit_srcu));
13129         TASKS_RCU(preempt_enable());
13130 @@ -869,6 +896,10 @@ void __noreturn do_exit(long code)
13131
13132         validate_creds_for_do_exit(tsk);
13133
13134 +       /* needs to stay after exit_notify() and before preempt_disable() */
13135 +       exit_vx_info(tsk, code);
13136 +       exit_nx_info(tsk);
13137 +
13138         check_stack_usage();
13139         preempt_disable();
13140         if (tsk->nr_dirtied)
13141 diff -urNp -x '*.orig' linux-4.9/kernel/fork.c linux-4.9/kernel/fork.c
13142 --- linux-4.9/kernel/fork.c     2021-02-24 15:47:32.467347970 +0100
13143 +++ linux-4.9/kernel/fork.c     2021-02-24 15:47:45.111076846 +0100
13144 @@ -77,6 +77,9 @@
13145  #include <linux/compiler.h>
13146  #include <linux/sysctl.h>
13147  #include <linux/kcov.h>
13148 +#include <linux/vs_context.h>
13149 +#include <linux/vs_network.h>
13150 +#include <linux/vs_limit.h>
13151
13152  #include <asm/pgtable.h>
13153  #include <asm/pgalloc.h>
13154 @@ -356,6 +359,8 @@ void free_task(struct task_struct *tsk)
13155         WARN_ON_ONCE(atomic_read(&tsk->stack_refcount) != 0);
13156  #endif
13157         rt_mutex_debug_task_free(tsk);
13158 +       clr_vx_info(&tsk->vx_info);
13159 +       clr_nx_info(&tsk->nx_info);
13160         ftrace_graph_exit_task(tsk);
13161         put_seccomp_filter(tsk);
13162         arch_release_task_struct(tsk);
13163 @@ -1476,6 +1481,8 @@ static __latent_entropy struct task_stru
13164  {
13165         int retval;
13166         struct task_struct *p;
13167 +       struct vx_info *vxi;
13168 +       struct nx_info *nxi;
13169
13170         if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))
13171                 return ERR_PTR(-EINVAL);
13172 @@ -1548,7 +1555,12 @@ static __latent_entropy struct task_stru
13173         DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
13174         DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
13175  #endif
13176 +       init_vx_info(&p->vx_info, current_vx_info());
13177 +       init_nx_info(&p->nx_info, current_nx_info());
13178 +
13179         retval = -EAGAIN;
13180 +       if (!vx_nproc_avail(1))
13181 +               goto bad_fork_free;
13182         if (atomic_read(&p->real_cred->user->processes) >=
13183                         task_rlimit(p, RLIMIT_NPROC)) {
13184                 if (p->real_cred->user != INIT_USER &&
13185 @@ -1843,6 +1855,18 @@ static __latent_entropy struct task_stru
13186         total_forks++;
13187         spin_unlock(&current->sighand->siglock);
13188         syscall_tracepoint_update(p);
13189 +
13190 +       /* p is copy of current */
13191 +       vxi = p->vx_info;
13192 +       if (vxi) {
13193 +               claim_vx_info(vxi, p);
13194 +               atomic_inc(&vxi->cvirt.nr_threads);
13195 +               atomic_inc(&vxi->cvirt.total_forks);
13196 +               vx_nproc_inc(p);
13197 +       }
13198 +       nxi = p->nx_info;
13199 +       if (nxi)
13200 +               claim_nx_info(nxi, p);
13201         write_unlock_irq(&tasklist_lock);
13202
13203         proc_fork_connector(p);
13204 diff -urNp -x '*.orig' linux-4.9/kernel/kthread.c linux-4.9/kernel/kthread.c
13205 --- linux-4.9/kernel/kthread.c  2021-02-24 15:47:32.474014845 +0100
13206 +++ linux-4.9/kernel/kthread.c  2021-02-24 15:47:45.111076846 +0100
13207 @@ -19,6 +19,7 @@
13208  #include <linux/ptrace.h>
13209  #include <linux/uaccess.h>
13210  #include <linux/cgroup.h>
13211 +#include <linux/vs_pid.h>
13212  #include <trace/events/sched.h>
13213
13214  static DEFINE_SPINLOCK(kthread_create_lock);
13215 diff -urNp -x '*.orig' linux-4.9/kernel/nsproxy.c linux-4.9/kernel/nsproxy.c
13216 --- linux-4.9/kernel/nsproxy.c  2016-12-11 20:17:54.000000000 +0100
13217 +++ linux-4.9/kernel/nsproxy.c  2021-02-24 15:47:45.111076846 +0100
13218 @@ -20,12 +20,15 @@
13219  #include <linux/mnt_namespace.h>
13220  #include <linux/utsname.h>
13221  #include <linux/pid_namespace.h>
13222 +#include <linux/vserver/global.h>
13223 +#include <linux/vserver/debug.h>
13224  #include <net/net_namespace.h>
13225  #include <linux/ipc_namespace.h>
13226  #include <linux/proc_ns.h>
13227  #include <linux/file.h>
13228  #include <linux/syscalls.h>
13229  #include <linux/cgroup.h>
13230 +#include "../fs/mount.h"
13231
13232  static struct kmem_cache *nsproxy_cachep;
13233
13234 @@ -50,8 +53,11 @@ static inline struct nsproxy *create_nsp
13235         struct nsproxy *nsproxy;
13236
13237         nsproxy = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL);
13238 -       if (nsproxy)
13239 +       if (nsproxy) {
13240                 atomic_set(&nsproxy->count, 1);
13241 +               atomic_inc(&vs_global_nsproxy);
13242 +       }
13243 +       vxdprintk(VXD_CBIT(space, 2), "create_nsproxy = %p[1]", nsproxy);
13244         return nsproxy;
13245  }
13246
13247 @@ -60,9 +66,12 @@ static inline struct nsproxy *create_nsp
13248   * Return the newly created nsproxy.  Do not attach this to the task,
13249   * leave it to the caller to do proper locking and attach it to task.
13250   */
13251 -static struct nsproxy *create_new_namespaces(unsigned long flags,
13252 -       struct task_struct *tsk, struct user_namespace *user_ns,
13253 -       struct fs_struct *new_fs)
13254 +static struct nsproxy *unshare_namespaces(
13255 +       unsigned long flags,
13256 +       struct nsproxy *orig,
13257 +       struct fs_struct *new_fs,
13258 +       struct user_namespace *new_user,
13259 +       struct pid_namespace *new_pid)
13260  {
13261         struct nsproxy *new_nsp;
13262         int err;
13263 @@ -71,39 +80,37 @@ static struct nsproxy *create_new_namesp
13264         if (!new_nsp)
13265                 return ERR_PTR(-ENOMEM);
13266
13267 -       new_nsp->mnt_ns = copy_mnt_ns(flags, tsk->nsproxy->mnt_ns, user_ns, new_fs);
13268 +       new_nsp->mnt_ns = copy_mnt_ns(flags, orig->mnt_ns, new_user, new_fs);
13269         if (IS_ERR(new_nsp->mnt_ns)) {
13270                 err = PTR_ERR(new_nsp->mnt_ns);
13271                 goto out_ns;
13272         }
13273
13274 -       new_nsp->uts_ns = copy_utsname(flags, user_ns, tsk->nsproxy->uts_ns);
13275 +       new_nsp->uts_ns = copy_utsname(flags, new_user, orig->uts_ns);
13276         if (IS_ERR(new_nsp->uts_ns)) {
13277                 err = PTR_ERR(new_nsp->uts_ns);
13278                 goto out_uts;
13279         }
13280
13281 -       new_nsp->ipc_ns = copy_ipcs(flags, user_ns, tsk->nsproxy->ipc_ns);
13282 +       new_nsp->ipc_ns = copy_ipcs(flags, new_user, orig->ipc_ns);
13283         if (IS_ERR(new_nsp->ipc_ns)) {
13284                 err = PTR_ERR(new_nsp->ipc_ns);
13285                 goto out_ipc;
13286         }
13287
13288 -       new_nsp->pid_ns_for_children =
13289 -               copy_pid_ns(flags, user_ns, tsk->nsproxy->pid_ns_for_children);
13290 +       new_nsp->pid_ns_for_children = copy_pid_ns(flags, new_user, new_pid);
13291         if (IS_ERR(new_nsp->pid_ns_for_children)) {
13292                 err = PTR_ERR(new_nsp->pid_ns_for_children);
13293                 goto out_pid;
13294         }
13295
13296 -       new_nsp->cgroup_ns = copy_cgroup_ns(flags, user_ns,
13297 -                                           tsk->nsproxy->cgroup_ns);
13298 +       new_nsp->cgroup_ns = copy_cgroup_ns(flags, new_user, orig->cgroup_ns);
13299         if (IS_ERR(new_nsp->cgroup_ns)) {
13300                 err = PTR_ERR(new_nsp->cgroup_ns);
13301                 goto out_cgroup;
13302         }
13303
13304 -       new_nsp->net_ns = copy_net_ns(flags, user_ns, tsk->nsproxy->net_ns);
13305 +       new_nsp->net_ns = copy_net_ns(flags, new_user, orig->net_ns);
13306         if (IS_ERR(new_nsp->net_ns)) {
13307                 err = PTR_ERR(new_nsp->net_ns);
13308                 goto out_net;
13309 @@ -130,6 +137,43 @@ out_ns:
13310         return ERR_PTR(err);
13311  }
13312
13313 +static struct nsproxy *create_new_namespaces(unsigned long flags,
13314 +       struct task_struct *tsk, struct user_namespace *user_ns,
13315 +       struct fs_struct *new_fs)
13316 +
13317 +{
13318 +       return unshare_namespaces(flags, tsk->nsproxy,
13319 +               new_fs, user_ns, task_active_pid_ns(tsk));
13320 +}
13321 +
13322 +/*
13323 + * copies the nsproxy, setting refcount to 1, and grabbing a
13324 + * reference to all contained namespaces.
13325 + */
13326 +struct nsproxy *copy_nsproxy(struct nsproxy *orig)
13327 +{
13328 +       struct nsproxy *ns = create_nsproxy();
13329 +
13330 +       if (ns) {
13331 +               memcpy(ns, orig, sizeof(struct nsproxy));
13332 +               atomic_set(&ns->count, 1);
13333 +
13334 +               if (ns->mnt_ns)
13335 +                       get_mnt_ns(ns->mnt_ns);
13336 +               if (ns->uts_ns)
13337 +                       get_uts_ns(ns->uts_ns);
13338 +               if (ns->ipc_ns)
13339 +                       get_ipc_ns(ns->ipc_ns);
13340 +               if (ns->pid_ns_for_children)
13341 +                       get_pid_ns(ns->pid_ns_for_children);
13342 +               if (ns->net_ns)
13343 +                       get_net(ns->net_ns);
13344 +               if (ns->cgroup_ns)
13345 +                       get_cgroup_ns(ns->cgroup_ns);
13346 +       }
13347 +       return ns;
13348 +}
13349 +
13350  /*
13351   * called from clone.  This now handles copy for nsproxy and all
13352   * namespaces therein.
13353 @@ -138,7 +182,10 @@ int copy_namespaces(unsigned long flags,
13354  {
13355         struct nsproxy *old_ns = tsk->nsproxy;
13356         struct user_namespace *user_ns = task_cred_xxx(tsk, user_ns);
13357 -       struct nsproxy *new_ns;
13358 +       struct nsproxy *new_ns = NULL;
13359 +
13360 +       vxdprintk(VXD_CBIT(space, 7), "copy_namespaces(0x%08lx,%p[%p])",
13361 +               flags, tsk, old_ns);
13362
13363         if (likely(!(flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
13364                               CLONE_NEWPID | CLONE_NEWNET |
13365 @@ -147,7 +194,7 @@ int copy_namespaces(unsigned long flags,
13366                 return 0;
13367         }
13368
13369 -       if (!ns_capable(user_ns, CAP_SYS_ADMIN))
13370 +       if (!vx_ns_can_unshare(user_ns, CAP_SYS_ADMIN, flags))
13371                 return -EPERM;
13372
13373         /*
13374 @@ -166,6 +213,9 @@ int copy_namespaces(unsigned long flags,
13375                 return  PTR_ERR(new_ns);
13376
13377         tsk->nsproxy = new_ns;
13378 +       vxdprintk(VXD_CBIT(space, 3),
13379 +               "copy_namespaces(0x%08lx,%p[%p]) = [%p]",
13380 +               flags, tsk, old_ns, new_ns);
13381         return 0;
13382  }
13383
13384 @@ -179,8 +229,10 @@ void free_nsproxy(struct nsproxy *ns)
13385                 put_ipc_ns(ns->ipc_ns);
13386         if (ns->pid_ns_for_children)
13387                 put_pid_ns(ns->pid_ns_for_children);
13388 +       if (ns->net_ns)
13389 +               put_net(ns->net_ns);
13390         put_cgroup_ns(ns->cgroup_ns);
13391 -       put_net(ns->net_ns);
13392 +       atomic_dec(&vs_global_nsproxy);
13393         kmem_cache_free(nsproxy_cachep, ns);
13394  }
13395
13396 @@ -194,12 +246,16 @@ int unshare_nsproxy_namespaces(unsigned
13397         struct user_namespace *user_ns;
13398         int err = 0;
13399
13400 +       vxdprintk(VXD_CBIT(space, 4),
13401 +               "unshare_nsproxy_namespaces(0x%08lx,[%p])",
13402 +               unshare_flags, current->nsproxy);
13403 +
13404         if (!(unshare_flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
13405                                CLONE_NEWNET | CLONE_NEWPID | CLONE_NEWCGROUP)))
13406                 return 0;
13407
13408         user_ns = new_cred ? new_cred->user_ns : current_user_ns();
13409 -       if (!ns_capable(user_ns, CAP_SYS_ADMIN))
13410 +       if (!vx_ns_can_unshare(user_ns, CAP_SYS_ADMIN, unshare_flags))
13411                 return -EPERM;
13412
13413         *new_nsp = create_new_namespaces(unshare_flags, current, user_ns,
13414 diff -urNp -x '*.orig' linux-4.9/kernel/pid.c linux-4.9/kernel/pid.c
13415 --- linux-4.9/kernel/pid.c      2021-02-24 15:47:32.477348283 +0100
13416 +++ linux-4.9/kernel/pid.c      2021-02-24 15:47:45.111076846 +0100
13417 @@ -38,6 +38,7 @@
13418  #include <linux/syscalls.h>
13419  #include <linux/proc_ns.h>
13420  #include <linux/proc_fs.h>
13421 +#include <linux/vs_pid.h>
13422
13423  #define pid_hashfn(nr, ns)     \
13424         hash_long((unsigned long)nr + (unsigned long)ns, pidhash_shift)
13425 @@ -381,7 +382,7 @@ EXPORT_SYMBOL_GPL(find_pid_ns);
13426
13427  struct pid *find_vpid(int nr)
13428  {
13429 -       return find_pid_ns(nr, task_active_pid_ns(current));
13430 +       return find_pid_ns(vx_rmap_pid(nr), task_active_pid_ns(current));
13431  }
13432  EXPORT_SYMBOL_GPL(find_vpid);
13433
13434 @@ -437,6 +438,9 @@ void transfer_pid(struct task_struct *ol
13435  struct task_struct *pid_task(struct pid *pid, enum pid_type type)
13436  {
13437         struct task_struct *result = NULL;
13438 +
13439 +       if (type == __PIDTYPE_REALPID)
13440 +               type = PIDTYPE_PID;
13441         if (pid) {
13442                 struct hlist_node *first;
13443                 first = rcu_dereference_check(hlist_first_rcu(&pid->tasks[type]),
13444 @@ -455,7 +459,7 @@ struct task_struct *find_task_by_pid_ns(
13445  {
13446         RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
13447                          "find_task_by_pid_ns() needs rcu_read_lock() protection");
13448 -       return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);
13449 +       return pid_task(find_pid_ns(vx_rmap_pid(nr), ns), PIDTYPE_PID);
13450  }
13451
13452  struct task_struct *find_task_by_vpid(pid_t vnr)
13453 @@ -499,7 +503,7 @@ struct pid *find_get_pid(pid_t nr)
13454  }
13455  EXPORT_SYMBOL_GPL(find_get_pid);
13456
13457 -pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)
13458 +pid_t pid_unmapped_nr_ns(struct pid *pid, struct pid_namespace *ns)
13459  {
13460         struct upid *upid;
13461         pid_t nr = 0;
13462 @@ -513,6 +517,11 @@ pid_t pid_nr_ns(struct pid *pid, struct
13463  }
13464  EXPORT_SYMBOL_GPL(pid_nr_ns);
13465
13466 +pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)
13467 +{
13468 +       return vx_map_pid(pid_unmapped_nr_ns(pid, ns));
13469 +}
13470 +
13471  pid_t pid_vnr(struct pid *pid)
13472  {
13473         return pid_nr_ns(pid, task_active_pid_ns(current));
13474 diff -urNp -x '*.orig' linux-4.9/kernel/pid_namespace.c linux-4.9/kernel/pid_namespace.c
13475 --- linux-4.9/kernel/pid_namespace.c    2021-02-24 15:47:32.477348283 +0100
13476 +++ linux-4.9/kernel/pid_namespace.c    2021-02-24 15:47:45.111076846 +0100
13477 @@ -18,6 +18,7 @@
13478  #include <linux/proc_ns.h>
13479  #include <linux/reboot.h>
13480  #include <linux/export.h>
13481 +#include <linux/vserver/global.h>
13482
13483  struct pid_cache {
13484         int nr_ids;
13485 @@ -124,6 +125,7 @@ static struct pid_namespace *create_pid_
13486         ns->ns.ops = &pidns_operations;
13487
13488         kref_init(&ns->kref);
13489 +       atomic_inc(&vs_global_pid_ns);
13490         ns->level = level;
13491         ns->parent = get_pid_ns(parent_pid_ns);
13492         ns->user_ns = get_user_ns(user_ns);
13493 @@ -142,6 +144,7 @@ static struct pid_namespace *create_pid_
13494  out_free_map:
13495         kfree(ns->pidmap[0].page);
13496  out_free:
13497 +       atomic_dec(&vs_global_pid_ns);
13498         kmem_cache_free(pid_ns_cachep, ns);
13499  out_dec:
13500         dec_pid_namespaces(ucounts);
13501 diff -urNp -x '*.orig' linux-4.9/kernel/printk/printk.c linux-4.9/kernel/printk/printk.c
13502 --- linux-4.9/kernel/printk/printk.c    2021-02-24 15:47:32.480681720 +0100
13503 +++ linux-4.9/kernel/printk/printk.c    2021-02-24 15:47:45.114410284 +0100
13504 @@ -45,6 +45,7 @@
13505  #include <linux/utsname.h>
13506  #include <linux/ctype.h>
13507  #include <linux/uio.h>
13508 +#include <linux/vs_cvirt.h>
13509
13510  #include <asm/uaccess.h>
13511  #include <asm/sections.h>
13512 @@ -611,7 +612,7 @@ int check_syslog_permissions(int type, i
13513                 goto ok;
13514
13515         if (syslog_action_restricted(type)) {
13516 -               if (capable(CAP_SYSLOG))
13517 +               if (vx_capable(CAP_SYSLOG, VXC_SYSLOG))
13518                         goto ok;
13519                 /*
13520                  * For historical reasons, accept CAP_SYS_ADMIN too, with
13521 @@ -1398,12 +1399,9 @@ int do_syslog(int type, char __user *buf
13522         if (error)
13523                 goto out;
13524
13525 -       switch (type) {
13526 -       case SYSLOG_ACTION_CLOSE:       /* Close log */
13527 -               break;
13528 -       case SYSLOG_ACTION_OPEN:        /* Open log */
13529 -               break;
13530 -       case SYSLOG_ACTION_READ:        /* Read from log */
13531 +       if ((type == SYSLOG_ACTION_READ) ||
13532 +           (type == SYSLOG_ACTION_READ_ALL) ||
13533 +           (type == SYSLOG_ACTION_READ_CLEAR)) {
13534                 error = -EINVAL;
13535                 if (!buf || len < 0)
13536                         goto out;
13537 @@ -1414,6 +1412,16 @@ int do_syslog(int type, char __user *buf
13538                         error = -EFAULT;
13539                         goto out;
13540                 }
13541 +       }
13542 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
13543 +               return vx_do_syslog(type, buf, len);
13544 +
13545 +       switch (type) {
13546 +       case SYSLOG_ACTION_CLOSE:       /* Close log */
13547 +               break;
13548 +       case SYSLOG_ACTION_OPEN:        /* Open log */
13549 +               break;
13550 +       case SYSLOG_ACTION_READ:        /* Read from log */
13551                 error = wait_event_interruptible(log_wait,
13552                                                  syslog_seq != log_next_seq);
13553                 if (error)
13554 @@ -1426,16 +1434,6 @@ int do_syslog(int type, char __user *buf
13555                 /* FALL THRU */
13556         /* Read last kernel messages */
13557         case SYSLOG_ACTION_READ_ALL:
13558 -               error = -EINVAL;
13559 -               if (!buf || len < 0)
13560 -                       goto out;
13561 -               error = 0;
13562 -               if (!len)
13563 -                       goto out;
13564 -               if (!access_ok(VERIFY_WRITE, buf, len)) {
13565 -                       error = -EFAULT;
13566 -                       goto out;
13567 -               }
13568                 error = syslog_print_all(buf, len, clear);
13569                 break;
13570         /* Clear ring buffer */
13571 diff -urNp -x '*.orig' linux-4.9/kernel/ptrace.c linux-4.9/kernel/ptrace.c
13572 --- linux-4.9/kernel/ptrace.c   2021-02-24 15:47:32.480681720 +0100
13573 +++ linux-4.9/kernel/ptrace.c   2021-02-24 15:47:45.114410284 +0100
13574 @@ -23,6 +23,7 @@
13575  #include <linux/syscalls.h>
13576  #include <linux/uaccess.h>
13577  #include <linux/regset.h>
13578 +#include <linux/vs_context.h>
13579  #include <linux/hw_breakpoint.h>
13580  #include <linux/cn_proc.h>
13581  #include <linux/compat.h>
13582 @@ -336,6 +337,11 @@ ok:
13583              !ptrace_has_cap(mm->user_ns, mode)))
13584             return -EPERM;
13585
13586 +       if (!vx_check(task->xid, VS_ADMIN_P|VS_WATCH_P|VS_IDENT))
13587 +               return -EPERM;
13588 +       if (!vx_check(task->xid, VS_IDENT) &&
13589 +               !task_vx_flags(task, VXF_STATE_ADMIN, 0))
13590 +               return -EACCES;
13591         if (mode & PTRACE_MODE_SCHED)
13592                 return 0;
13593         return security_ptrace_access_check(task, mode);
13594 diff -urNp -x '*.orig' linux-4.9/kernel/reboot.c linux-4.9/kernel/reboot.c
13595 --- linux-4.9/kernel/reboot.c   2021-02-24 15:47:32.484015158 +0100
13596 +++ linux-4.9/kernel/reboot.c   2021-02-24 15:47:45.114410284 +0100
13597 @@ -16,6 +16,7 @@
13598  #include <linux/syscalls.h>
13599  #include <linux/syscore_ops.h>
13600  #include <linux/uaccess.h>
13601 +#include <linux/vs_pid.h>
13602
13603  /*
13604   * this indicates whether you can reboot with ctrl-alt-del: the default is yes
13605 @@ -269,6 +270,8 @@ EXPORT_SYMBOL_GPL(kernel_power_off);
13606
13607  static DEFINE_MUTEX(reboot_mutex);
13608
13609 +long vs_reboot(unsigned int, void __user *);
13610 +
13611  /*
13612   * Reboot system call: for obvious reasons only root may call it,
13613   * and even root needs to set up some magic numbers in the registers
13614 @@ -311,6 +314,9 @@ SYSCALL_DEFINE4(reboot, int, magic1, int
13615         if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !pm_power_off)
13616                 cmd = LINUX_REBOOT_CMD_HALT;
13617
13618 +       if (!vx_check(0, VS_ADMIN|VS_WATCH))
13619 +               return vs_reboot(cmd, arg);
13620 +
13621         mutex_lock(&reboot_mutex);
13622         switch (cmd) {
13623         case LINUX_REBOOT_CMD_RESTART:
13624 diff -urNp -x '*.orig' linux-4.9/kernel/sched/core.c linux-4.9/kernel/sched/core.c
13625 --- linux-4.9/kernel/sched/core.c       2021-02-24 15:47:32.484015158 +0100
13626 +++ linux-4.9/kernel/sched/core.c       2021-02-24 15:47:45.114410284 +0100
13627 @@ -75,6 +75,8 @@
13628  #include <linux/compiler.h>
13629  #include <linux/frame.h>
13630  #include <linux/prefetch.h>
13631 +#include <linux/vs_sched.h>
13632 +#include <linux/vs_cvirt.h>
13633
13634  #include <asm/switch_to.h>
13635  #include <asm/tlb.h>
13636 @@ -3431,6 +3433,7 @@ void __noreturn do_task_dead(void)
13637         __set_current_state(TASK_DEAD);
13638         current->flags |= PF_NOFREEZE;  /* tell freezer to ignore us */
13639         __schedule(false);
13640 +       printk("bad task: %p [%lx]\n", current, current->state);
13641         BUG();
13642         /* Avoid "noreturn function does return".  */
13643         for (;;)
13644 @@ -3825,7 +3828,7 @@ SYSCALL_DEFINE1(nice, int, increment)
13645
13646         nice = clamp_val(nice, MIN_NICE, MAX_NICE);
13647         if (increment < 0 && !can_nice(current, nice))
13648 -               return -EPERM;
13649 +               return vx_flags(VXF_IGNEG_NICE, 0) ? 0 : -EPERM;
13650
13651         retval = security_task_setnice(current, nice);
13652         if (retval)
13653 diff -urNp -x '*.orig' linux-4.9/kernel/sched/cputime.c linux-4.9/kernel/sched/cputime.c
13654 --- linux-4.9/kernel/sched/cputime.c    2021-02-24 15:47:32.484015158 +0100
13655 +++ linux-4.9/kernel/sched/cputime.c    2021-02-24 15:47:45.114410284 +0100
13656 @@ -4,6 +4,7 @@
13657  #include <linux/kernel_stat.h>
13658  #include <linux/static_key.h>
13659  #include <linux/context_tracking.h>
13660 +#include <linux/vs_sched.h>
13661  #include "sched.h"
13662  #ifdef CONFIG_PARAVIRT
13663  #include <asm/paravirt.h>
13664 @@ -125,14 +126,17 @@ static inline void task_group_account_fi
13665  void account_user_time(struct task_struct *p, cputime_t cputime,
13666                        cputime_t cputime_scaled)
13667  {
13668 +       struct vx_info *vxi = p->vx_info;  /* p is _always_ current */
13669 +       int nice = (task_nice(p) > 0);
13670         int index;
13671
13672         /* Add user time to process. */
13673         p->utime += cputime;
13674         p->utimescaled += cputime_scaled;
13675 +       vx_account_user(vxi, cputime, nice);
13676         account_group_user_time(p, cputime);
13677
13678 -       index = (task_nice(p) > 0) ? CPUTIME_NICE : CPUTIME_USER;
13679 +       index = (nice) ? CPUTIME_NICE : CPUTIME_USER;
13680
13681         /* Add user time to cpustat. */
13682         task_group_account_field(p, index, cputime_to_nsecs(cputime));
13683 @@ -179,9 +183,12 @@ static inline
13684  void __account_system_time(struct task_struct *p, cputime_t cputime,
13685                         cputime_t cputime_scaled, int index)
13686  {
13687 +       struct vx_info *vxi = p->vx_info;  /* p is _always_ current */
13688 +
13689         /* Add system time to process. */
13690         p->stime += cputime;
13691         p->stimescaled += cputime_scaled;
13692 +       vx_account_system(vxi, cputime, 0 /* do we have idle time? */);
13693         account_group_system_time(p, cputime);
13694
13695         /* Add system time to cpustat. */
13696 diff -urNp -x '*.orig' linux-4.9/kernel/sched/fair.c linux-4.9/kernel/sched/fair.c
13697 --- linux-4.9/kernel/sched/fair.c       2021-02-24 15:47:32.487348596 +0100
13698 +++ linux-4.9/kernel/sched/fair.c       2021-02-24 15:47:45.117743722 +0100
13699 @@ -30,6 +30,7 @@
13700  #include <linux/mempolicy.h>
13701  #include <linux/migrate.h>
13702  #include <linux/task_work.h>
13703 +#include <linux/vs_cvirt.h>
13704
13705  #include <trace/events/sched.h>
13706
13707 @@ -3431,6 +3432,8 @@ enqueue_entity(struct cfs_rq *cfs_rq, st
13708                 __enqueue_entity(cfs_rq, se);
13709         se->on_rq = 1;
13710
13711 +       if (entity_is_task(se))
13712 +               vx_activate_task(task_of(se));
13713         if (cfs_rq->nr_running == 1) {
13714                 list_add_leaf_cfs_rq(cfs_rq);
13715                 check_enqueue_throttle(cfs_rq);
13716 @@ -3500,6 +3503,8 @@ dequeue_entity(struct cfs_rq *cfs_rq, st
13717         if (se != cfs_rq->curr)
13718                 __dequeue_entity(cfs_rq, se);
13719         se->on_rq = 0;
13720 +       if (entity_is_task(se))
13721 +               vx_deactivate_task(task_of(se));
13722         account_entity_dequeue(cfs_rq, se);
13723
13724         /*
13725 diff -urNp -x '*.orig' linux-4.9/kernel/sched/loadavg.c linux-4.9/kernel/sched/loadavg.c
13726 --- linux-4.9/kernel/sched/loadavg.c    2021-02-24 15:47:32.487348596 +0100
13727 +++ linux-4.9/kernel/sched/loadavg.c    2021-02-24 15:47:45.117743722 +0100
13728 @@ -73,9 +73,16 @@ EXPORT_SYMBOL(avenrun); /* should be rem
13729   */
13730  void get_avenrun(unsigned long *loads, unsigned long offset, int shift)
13731  {
13732 -       loads[0] = (avenrun[0] + offset) << shift;
13733 -       loads[1] = (avenrun[1] + offset) << shift;
13734 -       loads[2] = (avenrun[2] + offset) << shift;
13735 +       if (vx_flags(VXF_VIRT_LOAD, 0)) {
13736 +               struct vx_info *vxi = current_vx_info();
13737 +               loads[0] = (vxi->cvirt.load[0] + offset) << shift;
13738 +               loads[1] = (vxi->cvirt.load[1] + offset) << shift;
13739 +               loads[2] = (vxi->cvirt.load[2] + offset) << shift;
13740 +       } else {
13741 +               loads[0] = (avenrun[0] + offset) << shift;
13742 +               loads[1] = (avenrun[1] + offset) << shift;
13743 +               loads[2] = (avenrun[2] + offset) << shift;
13744 +       }
13745  }
13746
13747  long calc_load_fold_active(struct rq *this_rq, long adjust)
13748 diff -urNp -x '*.orig' linux-4.9/kernel/signal.c linux-4.9/kernel/signal.c
13749 --- linux-4.9/kernel/signal.c   2021-02-24 15:47:32.490682033 +0100
13750 +++ linux-4.9/kernel/signal.c   2021-02-24 15:47:45.117743722 +0100
13751 @@ -34,6 +34,8 @@
13752  #include <linux/compat.h>
13753  #include <linux/cn_proc.h>
13754  #include <linux/compiler.h>
13755 +#include <linux/vs_context.h>
13756 +#include <linux/vs_pid.h>
13757
13758  #define CREATE_TRACE_POINTS
13759  #include <trace/events/signal.h>
13760 @@ -782,9 +784,18 @@ static int check_kill_permission(int sig
13761         struct pid *sid;
13762         int error;
13763
13764 +       vxdprintk(VXD_CBIT(misc, 7),
13765 +               "check_kill_permission(%d,%p,%p[#%u,%u])",
13766 +               sig, info, t, vx_task_xid(t), t->pid);
13767 +
13768         if (!valid_signal(sig))
13769                 return -EINVAL;
13770
13771 +/*     FIXME: needed? if so, why?
13772 +       if ((info != SEND_SIG_NOINFO) &&
13773 +               (is_si_special(info) || !si_fromuser(info)))
13774 +               goto skip;      */
13775 +
13776         if (!si_fromuser(info))
13777                 return 0;
13778
13779 @@ -808,6 +819,20 @@ static int check_kill_permission(int sig
13780                 }
13781         }
13782
13783 +       error = -EPERM;
13784 +       if (t->pid == 1 && current->xid)
13785 +               return error;
13786 +
13787 +       error = -ESRCH;
13788 +       /* FIXME: we shouldn't return ESRCH ever, to avoid
13789 +                 loops, maybe ENOENT or EACCES? */
13790 +       if (!vx_check(vx_task_xid(t), VS_WATCH_P | VS_IDENT)) {
13791 +               vxdprintk(current->xid || VXD_CBIT(misc, 7),
13792 +                       "signal %d[%p] xid mismatch %p[#%u,%u] xid=#%u",
13793 +                       sig, info, t, vx_task_xid(t), t->pid, current->xid);
13794 +               return error;
13795 +       }
13796 +/* skip: */
13797         return security_task_kill(t, info, sig, 0);
13798  }
13799
13800 @@ -1359,8 +1384,14 @@ int kill_pid_info(int sig, struct siginf
13801         for (;;) {
13802                 rcu_read_lock();
13803                 p = pid_task(pid, PIDTYPE_PID);
13804 -               if (p)
13805 -                       error = group_send_sig_info(sig, info, p);
13806 +               if (p) {
13807 +                       if (vx_check(vx_task_xid(p), VS_IDENT))
13808 +                               error = group_send_sig_info(sig, info, p);
13809 +                       else {
13810 +                               rcu_read_unlock();
13811 +                               return -ESRCH;
13812 +                       }
13813 +               }
13814                 rcu_read_unlock();
13815                 if (likely(!p || error != -ESRCH))
13816                         return error;
13817 @@ -1405,7 +1436,7 @@ int kill_pid_info_as_cred(int sig, struc
13818
13819         rcu_read_lock();
13820         p = pid_task(pid, PIDTYPE_PID);
13821 -       if (!p) {
13822 +       if (!p || !vx_check(vx_task_xid(p), VS_IDENT)) {
13823                 ret = -ESRCH;
13824                 goto out_unlock;
13825         }
13826 @@ -1461,8 +1492,10 @@ static int kill_something_info(int sig,
13827                 struct task_struct * p;
13828
13829                 for_each_process(p) {
13830 -                       if (task_pid_vnr(p) > 1 &&
13831 -                                       !same_thread_group(p, current)) {
13832 +                       if (vx_check(vx_task_xid(p), VS_ADMIN|VS_IDENT) &&
13833 +                               task_pid_vnr(p) > 1 &&
13834 +                               !same_thread_group(p, current) &&
13835 +                               !vx_current_initpid(p->pid)) {
13836                                 int err = group_send_sig_info(sig, info, p);
13837                                 ++count;
13838                                 if (err != -EPERM)
13839 @@ -2333,6 +2366,11 @@ relock:
13840                                 !sig_kernel_only(signr))
13841                         continue;
13842
13843 +               /* virtual init is protected against user signals */
13844 +               if ((ksig->info.si_code == SI_USER) &&
13845 +                       vx_current_initpid(current->pid))
13846 +                       continue;
13847 +
13848                 if (sig_kernel_stop(signr)) {
13849                         /*
13850                          * The default action is to stop all threads in
13851 diff -urNp -x '*.orig' linux-4.9/kernel/softirq.c linux-4.9/kernel/softirq.c
13852 --- linux-4.9/kernel/softirq.c  2021-02-24 15:47:32.490682033 +0100
13853 +++ linux-4.9/kernel/softirq.c  2021-02-24 15:47:45.117743722 +0100
13854 @@ -26,6 +26,7 @@
13855  #include <linux/smpboot.h>
13856  #include <linux/tick.h>
13857  #include <linux/irq.h>
13858 +#include <linux/vs_context.h>
13859
13860  #define CREATE_TRACE_POINTS
13861  #include <trace/events/irq.h>
13862 diff -urNp -x '*.orig' linux-4.9/kernel/sys.c linux-4.9/kernel/sys.c
13863 --- linux-4.9/kernel/sys.c      2021-02-24 15:47:32.490682033 +0100
13864 +++ linux-4.9/kernel/sys.c      2021-02-24 15:47:45.117743722 +0100
13865 @@ -56,6 +56,7 @@
13866  #include <linux/nospec.h>
13867
13868  #include <linux/kmsg_dump.h>
13869 +#include <linux/vs_pid.h>
13870  /* Move somewhere else to avoid recompiling? */
13871  #include <generated/utsrelease.h>
13872
13873 @@ -159,7 +160,10 @@ static int set_one_prio(struct task_stru
13874                 goto out;
13875         }
13876         if (niceval < task_nice(p) && !can_nice(p, niceval)) {
13877 -               error = -EACCES;
13878 +               if (vx_flags(VXF_IGNEG_NICE, 0))
13879 +                       error = 0;
13880 +               else
13881 +                       error = -EACCES;
13882                 goto out;
13883         }
13884         no_nice = security_task_setnice(p, niceval);
13885 @@ -210,6 +214,8 @@ SYSCALL_DEFINE3(setpriority, int, which,
13886                 else
13887                         pgrp = task_pgrp(current);
13888                 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
13889 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13890 +                               continue;
13891                         error = set_one_prio(p, niceval, error);
13892                 } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
13893                 break;
13894 @@ -276,6 +282,8 @@ SYSCALL_DEFINE2(getpriority, int, which,
13895                 else
13896                         pgrp = task_pgrp(current);
13897                 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
13898 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13899 +                               continue;
13900                         niceval = nice_to_rlimit(task_nice(p));
13901                         if (niceval > retval)
13902                                 retval = niceval;
13903 @@ -292,6 +300,8 @@ SYSCALL_DEFINE2(getpriority, int, which,
13904                                 goto out_unlock;        /* No processes for this user */
13905                 }
13906                 do_each_thread(g, p) {
13907 +                       if (!vx_check(p->xid, VS_ADMIN_P | VS_IDENT))
13908 +                               continue;
13909                         if (uid_eq(task_uid(p), uid) && task_pid_vnr(p)) {
13910                                 niceval = nice_to_rlimit(task_nice(p));
13911                                 if (niceval > retval)
13912 @@ -1213,7 +1223,8 @@ SYSCALL_DEFINE2(sethostname, char __user
13913         int errno;
13914         char tmp[__NEW_UTS_LEN];
13915
13916 -       if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
13917 +       if (!vx_ns_capable(current->nsproxy->uts_ns->user_ns,
13918 +               CAP_SYS_ADMIN, VXC_SET_UTSNAME))
13919                 return -EPERM;
13920
13921         if (len < 0 || len > __NEW_UTS_LEN)
13922 @@ -1266,7 +1277,8 @@ SYSCALL_DEFINE2(setdomainname, char __us
13923         int errno;
13924         char tmp[__NEW_UTS_LEN];
13925
13926 -       if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
13927 +       if (!vx_ns_capable(current->nsproxy->uts_ns->user_ns,
13928 +               CAP_SYS_ADMIN, VXC_SET_UTSNAME))
13929                 return -EPERM;
13930         if (len < 0 || len > __NEW_UTS_LEN)
13931                 return -EINVAL;
13932 @@ -1386,7 +1398,7 @@ int do_prlimit(struct task_struct *tsk,
13933                 /* Keep the capable check against init_user_ns until
13934                    cgroups can contain all limits */
13935                 if (new_rlim->rlim_max > rlim->rlim_max &&
13936 -                               !capable(CAP_SYS_RESOURCE))
13937 +                       !vx_capable(CAP_SYS_RESOURCE, VXC_SET_RLIMIT))
13938                         retval = -EPERM;
13939                 if (!retval)
13940                         retval = security_task_setrlimit(tsk->group_leader,
13941 @@ -1439,7 +1451,8 @@ static int check_prlimit_permission(stru
13942             gid_eq(cred->gid, tcred->sgid) &&
13943             gid_eq(cred->gid, tcred->gid))
13944                 return 0;
13945 -       if (ns_capable(tcred->user_ns, CAP_SYS_RESOURCE))
13946 +       if (vx_ns_capable(tcred->user_ns,
13947 +               CAP_SYS_RESOURCE, VXC_SET_RLIMIT))
13948                 return 0;
13949
13950         return -EPERM;
13951 @@ -2328,7 +2341,12 @@ static int do_sysinfo(struct sysinfo *in
13952
13953         get_avenrun(info->loads, 0, SI_LOAD_SHIFT - FSHIFT);
13954
13955 -       info->procs = nr_threads;
13956 +       if (vx_flags(VXF_VIRT_LOAD, 0)) {
13957 +               struct vx_info *vxi = current_vx_info();
13958 +               info->procs = atomic_read(&vxi->cvirt.nr_threads);
13959 +       } else {
13960 +               info->procs = nr_threads;
13961 +       }
13962
13963         si_meminfo(info);
13964         si_swapinfo(info);
13965 diff -urNp -x '*.orig' linux-4.9/kernel/sysctl.c linux-4.9/kernel/sysctl.c
13966 --- linux-4.9/kernel/sysctl.c   2021-02-24 15:47:32.490682033 +0100
13967 +++ linux-4.9/kernel/sysctl.c   2021-02-24 15:47:45.117743722 +0100
13968 @@ -87,6 +87,7 @@
13969  #if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT)
13970  #include <linux/lockdep.h>
13971  #endif
13972 +extern char vshelper_path[];
13973  #ifdef CONFIG_CHR_DEV_SG
13974  #include <scsi/sg.h>
13975  #endif
13976 @@ -284,6 +285,13 @@ static int max_extfrag_threshold = 1000;
13977
13978  static struct ctl_table kern_table[] = {
13979         {
13980 +               .procname       = "vshelper",
13981 +               .data           = &vshelper_path,
13982 +               .maxlen         = 256,
13983 +               .mode           = 0644,
13984 +               .proc_handler   = proc_dostring,
13985 +       },
13986 +       {
13987                 .procname       = "sched_child_runs_first",
13988                 .data           = &sysctl_sched_child_runs_first,
13989                 .maxlen         = sizeof(unsigned int),
13990 @@ -1429,7 +1437,6 @@ static struct ctl_table vm_table[] = {
13991                 .extra1         = &zero,
13992                 .extra2         = &one,
13993         },
13994 -
13995  #endif /* CONFIG_COMPACTION */
13996         {
13997                 .procname       = "min_free_kbytes",
13998 diff -urNp -x '*.orig' linux-4.9/kernel/sysctl_binary.c linux-4.9/kernel/sysctl_binary.c
13999 --- linux-4.9/kernel/sysctl_binary.c    2016-12-11 20:17:54.000000000 +0100
14000 +++ linux-4.9/kernel/sysctl_binary.c    2021-02-24 15:47:45.117743722 +0100
14001 @@ -74,6 +74,7 @@ static const struct bin_table bin_kern_t
14002
14003         { CTL_INT,      KERN_PANIC,                     "panic" },
14004         { CTL_INT,      KERN_REALROOTDEV,               "real-root-dev" },
14005 +       { CTL_STR,      KERN_VSHELPER,                  "vshelper" },
14006
14007         { CTL_STR,      KERN_SPARC_REBOOT,              "reboot-cmd" },
14008         { CTL_INT,      KERN_CTLALTDEL,                 "ctrl-alt-del" },
14009 diff -urNp -x '*.orig' linux-4.9/kernel/time/posix-timers.c linux-4.9/kernel/time/posix-timers.c
14010 --- linux-4.9/kernel/time/posix-timers.c        2021-02-24 15:47:32.494015471 +0100
14011 +++ linux-4.9/kernel/time/posix-timers.c        2021-02-24 15:47:45.117743722 +0100
14012 @@ -48,6 +48,7 @@
14013  #include <linux/workqueue.h>
14014  #include <linux/export.h>
14015  #include <linux/hashtable.h>
14016 +#include <linux/vs_context.h>
14017
14018  #include "timekeeping.h"
14019
14020 @@ -417,6 +418,7 @@ int posix_timer_event(struct k_itimer *t
14021  {
14022         struct task_struct *task;
14023         int shared, ret = -1;
14024 +
14025         /*
14026          * FIXME: if ->sigq is queued we can race with
14027          * dequeue_signal()->do_schedule_next_timer().
14028 @@ -433,10 +435,18 @@ int posix_timer_event(struct k_itimer *t
14029         rcu_read_lock();
14030         task = pid_task(timr->it_pid, PIDTYPE_PID);
14031         if (task) {
14032 +               struct vx_info_save vxis;
14033 +               struct vx_info *vxi;
14034 +
14035 +               vxi = get_vx_info(task->vx_info);
14036 +               enter_vx_info(vxi, &vxis);
14037                 shared = !(timr->it_sigev_notify & SIGEV_THREAD_ID);
14038                 ret = send_sigqueue(timr->sigq, task, shared);
14039 +               leave_vx_info(&vxis);
14040 +               put_vx_info(vxi);
14041         }
14042         rcu_read_unlock();
14043 +
14044         /* If we failed to send the signal the timer stops. */
14045         return ret > 0;
14046  }
14047 diff -urNp -x '*.orig' linux-4.9/kernel/time/time.c linux-4.9/kernel/time/time.c
14048 --- linux-4.9/kernel/time/time.c        2021-02-24 15:47:32.494015471 +0100
14049 +++ linux-4.9/kernel/time/time.c        2021-02-24 15:47:45.117743722 +0100
14050 @@ -38,6 +38,7 @@
14051  #include <linux/fs.h>
14052  #include <linux/math64.h>
14053  #include <linux/ptrace.h>
14054 +#include <linux/vs_time.h>
14055
14056  #include <asm/uaccess.h>
14057  #include <asm/unistd.h>
14058 @@ -94,7 +95,7 @@ SYSCALL_DEFINE1(stime, time_t __user *,
14059         if (err)
14060                 return err;
14061
14062 -       do_settimeofday(&tv);
14063 +       vx_settimeofday(&tv);
14064         return 0;
14065  }
14066
14067 @@ -187,7 +188,7 @@ int do_sys_settimeofday64(const struct t
14068                 }
14069         }
14070         if (tv)
14071 -               return do_settimeofday64(tv);
14072 +               return vx_settimeofday64(tv);
14073         return 0;
14074  }
14075
14076 diff -urNp -x '*.orig' linux-4.9/kernel/time/timekeeping.c linux-4.9/kernel/time/timekeeping.c
14077 --- linux-4.9/kernel/time/timekeeping.c 2021-02-24 15:47:32.494015471 +0100
14078 +++ linux-4.9/kernel/time/timekeeping.c 2021-02-24 15:47:45.121077159 +0100
14079 @@ -23,6 +23,8 @@
14080  #include <linux/stop_machine.h>
14081  #include <linux/pvclock_gtod.h>
14082  #include <linux/compiler.h>
14083 +#include <linux/vs_time.h>
14084 +#include <linux/vs_base.h>
14085
14086  #include "tick-internal.h"
14087  #include "ntp_internal.h"
14088 @@ -768,6 +770,15 @@ ktime_t ktime_get_with_offset(enum tk_of
14089
14090         } while (read_seqcount_retry(&tk_core.seq, seq));
14091
14092 +#ifdef CONFIG_VSERVER_VTIME
14093 +       if ((offs == TK_OFFS_BOOT) &&
14094 +               vx_flags(VXF_VIRT_UPTIME, 0) &&
14095 +               !vx_check(0, VS_ADMIN|VS_WATCH)) {
14096 +               struct vx_info *vxi = current_vx_info();
14097 +               ktime_t bias_uptime = timespec64_to_ktime(vxi->cvirt.bias_uptime);
14098 +               base = ktime_sub(base, bias_uptime);
14099 +       }
14100 +#endif
14101         return ktime_add_ns(base, nsecs);
14102
14103  }
14104 diff -urNp -x '*.orig' linux-4.9/kernel/time/timer.c linux-4.9/kernel/time/timer.c
14105 --- linux-4.9/kernel/time/timer.c       2021-02-24 15:47:32.494015471 +0100
14106 +++ linux-4.9/kernel/time/timer.c       2021-02-24 15:47:45.121077159 +0100
14107 @@ -43,6 +43,10 @@
14108  #include <linux/slab.h>
14109  #include <linux/compat.h>
14110  #include <linux/random.h>
14111 +#include <linux/vs_base.h>
14112 +#include <linux/vs_cvirt.h>
14113 +#include <linux/vs_pid.h>
14114 +#include <linux/vserver/sched.h>
14115
14116  #include <asm/uaccess.h>
14117  #include <asm/unistd.h>
14118 diff -urNp -x '*.orig' linux-4.9/kernel/user_namespace.c linux-4.9/kernel/user_namespace.c
14119 --- linux-4.9/kernel/user_namespace.c   2021-02-24 15:47:32.504015783 +0100
14120 +++ linux-4.9/kernel/user_namespace.c   2021-02-24 15:47:45.121077159 +0100
14121 @@ -22,6 +22,7 @@
14122  #include <linux/ctype.h>
14123  #include <linux/projid.h>
14124  #include <linux/fs_struct.h>
14125 +#include <linux/vserver/global.h>
14126
14127  static struct kmem_cache *user_ns_cachep __read_mostly;
14128  static DEFINE_MUTEX(userns_state_mutex);
14129 @@ -115,6 +116,7 @@ int create_user_ns(struct cred *new)
14130
14131         atomic_set(&ns->count, 1);
14132         /* Leave the new->user_ns reference with the new user namespace. */
14133 +       atomic_inc(&vs_global_user_ns);
14134         ns->parent = parent_ns;
14135         ns->level = parent_ns->level + 1;
14136         ns->owner = owner;
14137 @@ -185,6 +187,7 @@ static void free_user_ns(struct work_str
14138                 key_put(ns->persistent_keyring_register);
14139  #endif
14140                 ns_free_inum(&ns->ns);
14141 +               atomic_dec(&vs_global_user_ns);
14142                 kmem_cache_free(user_ns_cachep, ns);
14143                 dec_user_namespaces(ucounts);
14144                 ns = parent;
14145 @@ -404,6 +407,18 @@ gid_t from_kgid_munged(struct user_names
14146  }
14147  EXPORT_SYMBOL(from_kgid_munged);
14148
14149 +ktag_t make_ktag(struct user_namespace *from, vtag_t tag)
14150 +{
14151 +       return KTAGT_INIT(tag);
14152 +}
14153 +EXPORT_SYMBOL(make_ktag);
14154 +
14155 +vtag_t from_ktag(struct user_namespace *to, ktag_t tag)
14156 +{
14157 +       return __ktag_val(tag);
14158 +}
14159 +EXPORT_SYMBOL(from_ktag);
14160 +
14161  /**
14162   *     make_kprojid - Map a user-namespace projid pair into a kprojid.
14163   *     @ns:  User namespace that the projid is in
14164 diff -urNp -x '*.orig' linux-4.9/kernel/utsname.c linux-4.9/kernel/utsname.c
14165 --- linux-4.9/kernel/utsname.c  2016-12-11 20:17:54.000000000 +0100
14166 +++ linux-4.9/kernel/utsname.c  2021-02-24 15:47:45.121077159 +0100
14167 @@ -16,6 +16,7 @@
14168  #include <linux/slab.h>
14169  #include <linux/user_namespace.h>
14170  #include <linux/proc_ns.h>
14171 +#include <linux/vserver/global.h>
14172
14173  static struct ucounts *inc_uts_namespaces(struct user_namespace *ns)
14174  {
14175 @@ -32,8 +33,10 @@ static struct uts_namespace *create_uts_
14176         struct uts_namespace *uts_ns;
14177
14178         uts_ns = kmalloc(sizeof(struct uts_namespace), GFP_KERNEL);
14179 -       if (uts_ns)
14180 +       if (uts_ns) {
14181                 kref_init(&uts_ns->kref);
14182 +               atomic_inc(&vs_global_uts_ns);
14183 +       }
14184         return uts_ns;
14185  }
14186
14187 @@ -111,6 +114,7 @@ void free_uts_ns(struct kref *kref)
14188         dec_uts_namespaces(ns->ucounts);
14189         put_user_ns(ns->user_ns);
14190         ns_free_inum(&ns->ns);
14191 +       atomic_dec(&vs_global_uts_ns);
14192         kfree(ns);
14193  }
14194
14195 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/Kconfig linux-4.9/kernel/vserver/Kconfig
14196 --- linux-4.9/kernel/vserver/Kconfig    1970-01-01 01:00:00.000000000 +0100
14197 +++ linux-4.9/kernel/vserver/Kconfig    2021-02-24 15:47:45.124410596 +0100
14198 @@ -0,0 +1,230 @@
14199 +#
14200 +# Linux VServer configuration
14201 +#
14202 +
14203 +menu "Linux VServer"
14204 +
14205 +config VSERVER_AUTO_LBACK
14206 +       bool    "Automatically Assign Loopback IP"
14207 +       default y
14208 +       help
14209 +         Automatically assign a guest specific loopback
14210 +         IP and add it to the kernel network stack on
14211 +         startup.
14212 +
14213 +config VSERVER_AUTO_SINGLE
14214 +       bool    "Automatic Single IP Special Casing"
14215 +       default n
14216 +       help
14217 +         This allows network contexts with a single IP to
14218 +         automatically remap 0.0.0.0 bindings to that IP,
14219 +         avoiding further network checks and improving
14220 +         performance.
14221 +
14222 +         (note: such guests do not allow to change the ip
14223 +          on the fly and do not show loopback addresses)
14224 +
14225 +config VSERVER_COWBL
14226 +       bool    "Enable COW Immutable Link Breaking"
14227 +       default y
14228 +       help
14229 +         This enables the COW (Copy-On-Write) link break code.
14230 +         It allows you to treat unified files like normal files
14231 +         when writing to them (which will implicitely break the
14232 +         link and create a copy of the unified file)
14233 +
14234 +config VSERVER_VTIME
14235 +       bool    "Enable Virtualized Guest Time (EXPERIMENTAL)"
14236 +       default n
14237 +       help
14238 +         This enables per guest time offsets to allow for
14239 +         adjusting the system clock individually per guest.
14240 +         this adds some overhead to the time functions and
14241 +         therefore should not be enabled without good reason.
14242 +
14243 +config VSERVER_DEVICE
14244 +       bool    "Enable Guest Device Mapping (EXPERIMENTAL)"
14245 +       default n
14246 +       help
14247 +         This enables generic device remapping.
14248 +
14249 +config VSERVER_PROC_SECURE
14250 +       bool    "Enable Proc Security"
14251 +       depends on PROC_FS
14252 +       default y
14253 +       help
14254 +         This configures ProcFS security to initially hide
14255 +         non-process entries for all contexts except the main and
14256 +         spectator context (i.e. for all guests), which is a secure
14257 +         default.
14258 +
14259 +         (note: on 1.2x the entries were visible by default)
14260 +
14261 +choice
14262 +       prompt  "Persistent Inode Tagging"
14263 +       default TAGGING_ID24
14264 +       help
14265 +         This adds persistent context information to filesystems
14266 +         mounted with the tagxid option. Tagging is a requirement
14267 +         for per-context disk limits and per-context quota.
14268 +
14269 +
14270 +config TAGGING_NONE
14271 +       bool    "Disabled"
14272 +       help
14273 +         do not store per-context information in inodes.
14274 +
14275 +config TAGGING_UID16
14276 +       bool    "UID16/GID32"
14277 +       help
14278 +         reduces UID to 16 bit, but leaves GID at 32 bit.
14279 +
14280 +config TAGGING_GID16
14281 +       bool    "UID32/GID16"
14282 +       help
14283 +         reduces GID to 16 bit, but leaves UID at 32 bit.
14284 +
14285 +config TAGGING_ID24
14286 +       bool    "UID24/GID24"
14287 +       help
14288 +         uses the upper 8bit from UID and GID for XID tagging
14289 +         which leaves 24bit for UID/GID each, which should be
14290 +         more than sufficient for normal use.
14291 +
14292 +config TAGGING_INTERN
14293 +       bool    "UID32/GID32"
14294 +       help
14295 +         this uses otherwise reserved inode fields in the on
14296 +         disk representation, which limits the use to a few
14297 +         filesystems (currently ext2 and ext3)
14298 +
14299 +endchoice
14300 +
14301 +config TAG_NFSD
14302 +       bool    "Tag NFSD User Auth and Files"
14303 +       default n
14304 +       help
14305 +         Enable this if you do want the in-kernel NFS
14306 +         Server to use the tagging specified above.
14307 +         (will require patched clients too)
14308 +
14309 +config VSERVER_PRIVACY
14310 +       bool    "Honor Privacy Aspects of Guests"
14311 +       default n
14312 +       help
14313 +         When enabled, most context checks will disallow
14314 +         access to structures assigned to a specific context,
14315 +         like ptys or loop devices.
14316 +
14317 +config VSERVER_CONTEXTS
14318 +       int     "Maximum number of Contexts (1-65533)"  if EMBEDDED
14319 +       range 1 65533
14320 +       default "768"   if 64BIT
14321 +       default "256"
14322 +       help
14323 +         This setting will optimize certain data structures
14324 +         and memory allocations according to the expected
14325 +         maximum.
14326 +
14327 +         note: this is not a strict upper limit.
14328 +
14329 +config VSERVER_WARN
14330 +       bool    "VServer Warnings"
14331 +       default y
14332 +       help
14333 +         This enables various runtime warnings, which will
14334 +         notify about potential manipulation attempts or
14335 +         resource shortage. It is generally considered to
14336 +         be a good idea to have that enabled.
14337 +
14338 +config VSERVER_WARN_DEVPTS
14339 +       bool    "VServer DevPTS Warnings"
14340 +       depends on VSERVER_WARN
14341 +       default y
14342 +       help
14343 +         This enables DevPTS related warnings, issued when a
14344 +         process inside a context tries to lookup or access
14345 +         a dynamic pts from the host or a different context.
14346 +
14347 +config VSERVER_DEBUG
14348 +       bool    "VServer Debugging Code"
14349 +       default n
14350 +       help
14351 +         Set this to yes if you want to be able to activate
14352 +         debugging output at runtime. It adds a very small
14353 +         overhead to all vserver related functions and
14354 +         increases the kernel size by about 20k.
14355 +
14356 +config VSERVER_HISTORY
14357 +       bool    "VServer History Tracing"
14358 +       depends on VSERVER_DEBUG
14359 +       default n
14360 +       help
14361 +         Set this to yes if you want to record the history of
14362 +         linux-vserver activities, so they can be replayed in
14363 +         the event of a kernel panic or oops.
14364 +
14365 +config VSERVER_HISTORY_SIZE
14366 +       int     "Per-CPU History Size (32-65536)"
14367 +       depends on VSERVER_HISTORY
14368 +       range 32 65536
14369 +       default 64
14370 +       help
14371 +         This allows you to specify the number of entries in
14372 +         the per-CPU history buffer.
14373 +
14374 +config VSERVER_EXTRA_MNT_CHECK
14375 +       bool    "Extra Checks for Reachability"
14376 +       default n
14377 +       help
14378 +         Set this to yes if you want to do extra checks for
14379 +         vfsmount reachability in the proc filesystem code.
14380 +         This shouldn't be required on any setup utilizing
14381 +         mnt namespaces.
14382 +
14383 +choice
14384 +       prompt  "Quotes used in debug and warn messages"
14385 +       default QUOTES_ISO8859
14386 +
14387 +config QUOTES_ISO8859
14388 +       bool    "Extended ASCII (ISO 8859) angle quotes"
14389 +       help
14390 +         This uses the extended ASCII characters \xbb
14391 +         and \xab for quoting file and process names.
14392 +
14393 +config QUOTES_UTF8
14394 +       bool    "UTF-8 angle quotes"
14395 +       help
14396 +         This uses the the UTF-8 sequences for angle
14397 +         quotes to quote file and process names.
14398 +
14399 +config QUOTES_ASCII
14400 +       bool    "ASCII single quotes"
14401 +       help
14402 +         This uses the ASCII single quote character
14403 +         (\x27) to quote file and process names.
14404 +
14405 +endchoice
14406 +
14407 +endmenu
14408 +
14409 +
14410 +config VSERVER
14411 +       bool
14412 +       default y
14413 +       select NAMESPACES
14414 +       select UTS_NS
14415 +       select IPC_NS
14416 +#      select USER_NS
14417 +       select SYSVIPC
14418 +
14419 +config VSERVER_SECURITY
14420 +       bool
14421 +       depends on SECURITY
14422 +       default y
14423 +       select SECURITY_CAPABILITIES
14424 +
14425 +config VSERVER_DISABLED
14426 +       bool
14427 +       default n
14428 +
14429 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/Makefile linux-4.9/kernel/vserver/Makefile
14430 --- linux-4.9/kernel/vserver/Makefile   1970-01-01 01:00:00.000000000 +0100
14431 +++ linux-4.9/kernel/vserver/Makefile   2021-02-24 15:47:45.124410596 +0100
14432 @@ -0,0 +1,18 @@
14433 +#
14434 +# Makefile for the Linux vserver routines.
14435 +#
14436 +
14437 +
14438 +obj-y          += vserver.o
14439 +
14440 +vserver-y      := switch.o context.o space.o sched.o network.o inode.o \
14441 +                  limit.o cvirt.o cacct.o signal.o helper.o init.o \
14442 +                  dlimit.o tag.o
14443 +
14444 +vserver-$(CONFIG_INET) += inet.o
14445 +vserver-$(CONFIG_PROC_FS) += proc.o
14446 +vserver-$(CONFIG_VSERVER_DEBUG) += sysctl.o debug.o
14447 +vserver-$(CONFIG_VSERVER_HISTORY) += history.o
14448 +vserver-$(CONFIG_VSERVER_MONITOR) += monitor.o
14449 +vserver-$(CONFIG_VSERVER_DEVICE) += device.o
14450 +
14451 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/cacct.c linux-4.9/kernel/vserver/cacct.c
14452 --- linux-4.9/kernel/vserver/cacct.c    1970-01-01 01:00:00.000000000 +0100
14453 +++ linux-4.9/kernel/vserver/cacct.c    2021-02-24 15:47:45.121077159 +0100
14454 @@ -0,0 +1,42 @@
14455 +/*
14456 + *  linux/kernel/vserver/cacct.c
14457 + *
14458 + *  Virtual Server: Context Accounting
14459 + *
14460 + *  Copyright (C) 2006-2007 Herbert P?tzl
14461 + *
14462 + *  V0.01  added accounting stats
14463 + *
14464 + */
14465 +
14466 +#include <linux/types.h>
14467 +#include <linux/vs_context.h>
14468 +#include <linux/vserver/cacct_cmd.h>
14469 +#include <linux/vserver/cacct_int.h>
14470 +
14471 +#include <asm/errno.h>
14472 +#include <asm/uaccess.h>
14473 +
14474 +
14475 +int vc_sock_stat(struct vx_info *vxi, void __user *data)
14476 +{
14477 +       struct vcmd_sock_stat_v0 vc_data;
14478 +       int j, field;
14479 +
14480 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
14481 +               return -EFAULT;
14482 +
14483 +       field = vc_data.field;
14484 +       if ((field < 0) || (field >= VXA_SOCK_SIZE))
14485 +               return -EINVAL;
14486 +
14487 +       for (j = 0; j < 3; j++) {
14488 +               vc_data.count[j] = vx_sock_count(&vxi->cacct, field, j);
14489 +               vc_data.total[j] = vx_sock_total(&vxi->cacct, field, j);
14490 +       }
14491 +
14492 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
14493 +               return -EFAULT;
14494 +       return 0;
14495 +}
14496 +
14497 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/cacct_init.h linux-4.9/kernel/vserver/cacct_init.h
14498 --- linux-4.9/kernel/vserver/cacct_init.h       1970-01-01 01:00:00.000000000 +0100
14499 +++ linux-4.9/kernel/vserver/cacct_init.h       2021-02-24 15:47:45.121077159 +0100
14500 @@ -0,0 +1,25 @@
14501 +
14502 +
14503 +static inline void vx_info_init_cacct(struct _vx_cacct *cacct)
14504 +{
14505 +       int i, j;
14506 +
14507 +
14508 +       for (i = 0; i < VXA_SOCK_SIZE; i++) {
14509 +               for (j = 0; j < 3; j++) {
14510 +                       atomic_long_set(&cacct->sock[i][j].count, 0);
14511 +                       atomic_long_set(&cacct->sock[i][j].total, 0);
14512 +               }
14513 +       }
14514 +       for (i = 0; i < 8; i++)
14515 +               atomic_set(&cacct->slab[i], 0);
14516 +       for (i = 0; i < 5; i++)
14517 +               for (j = 0; j < 4; j++)
14518 +                       atomic_set(&cacct->page[i][j], 0);
14519 +}
14520 +
14521 +static inline void vx_info_exit_cacct(struct _vx_cacct *cacct)
14522 +{
14523 +       return;
14524 +}
14525 +
14526 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/cacct_proc.h linux-4.9/kernel/vserver/cacct_proc.h
14527 --- linux-4.9/kernel/vserver/cacct_proc.h       1970-01-01 01:00:00.000000000 +0100
14528 +++ linux-4.9/kernel/vserver/cacct_proc.h       2021-02-24 15:47:45.121077159 +0100
14529 @@ -0,0 +1,53 @@
14530 +#ifndef _VX_CACCT_PROC_H
14531 +#define _VX_CACCT_PROC_H
14532 +
14533 +#include <linux/vserver/cacct_int.h>
14534 +
14535 +
14536 +#define VX_SOCKA_TOP   \
14537 +       "Type\t    recv #/bytes\t\t   send #/bytes\t\t    fail #/bytes\n"
14538 +
14539 +static inline int vx_info_proc_cacct(struct _vx_cacct *cacct, char *buffer)
14540 +{
14541 +       int i, j, length = 0;
14542 +       static char *type[VXA_SOCK_SIZE] = {
14543 +               "UNSPEC", "UNIX", "INET", "INET6", "PACKET", "OTHER"
14544 +       };
14545 +
14546 +       length += sprintf(buffer + length, VX_SOCKA_TOP);
14547 +       for (i = 0; i < VXA_SOCK_SIZE; i++) {
14548 +               length += sprintf(buffer + length, "%s:", type[i]);
14549 +               for (j = 0; j < 3; j++) {
14550 +                       length += sprintf(buffer + length,
14551 +                               "\t%10lu/%-10lu",
14552 +                               vx_sock_count(cacct, i, j),
14553 +                               vx_sock_total(cacct, i, j));
14554 +               }
14555 +               buffer[length++] = '\n';
14556 +       }
14557 +
14558 +       length += sprintf(buffer + length, "\n");
14559 +       length += sprintf(buffer + length,
14560 +               "slab:\t %8u %8u %8u %8u\n",
14561 +               atomic_read(&cacct->slab[1]),
14562 +               atomic_read(&cacct->slab[4]),
14563 +               atomic_read(&cacct->slab[0]),
14564 +               atomic_read(&cacct->slab[2]));
14565 +
14566 +       length += sprintf(buffer + length, "\n");
14567 +       for (i = 0; i < 5; i++) {
14568 +               length += sprintf(buffer + length,
14569 +                       "page[%d]: %8u %8u %8u %8u\t %8u %8u %8u %8u\n", i,
14570 +                       atomic_read(&cacct->page[i][0]),
14571 +                       atomic_read(&cacct->page[i][1]),
14572 +                       atomic_read(&cacct->page[i][2]),
14573 +                       atomic_read(&cacct->page[i][3]),
14574 +                       atomic_read(&cacct->page[i][4]),
14575 +                       atomic_read(&cacct->page[i][5]),
14576 +                       atomic_read(&cacct->page[i][6]),
14577 +                       atomic_read(&cacct->page[i][7]));
14578 +       }
14579 +       return length;
14580 +}
14581 +
14582 +#endif /* _VX_CACCT_PROC_H */
14583 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/context.c linux-4.9/kernel/vserver/context.c
14584 --- linux-4.9/kernel/vserver/context.c  1970-01-01 01:00:00.000000000 +0100
14585 +++ linux-4.9/kernel/vserver/context.c  2021-02-24 15:47:45.121077159 +0100
14586 @@ -0,0 +1,1119 @@
14587 +/*
14588 + *  linux/kernel/vserver/context.c
14589 + *
14590 + *  Virtual Server: Context Support
14591 + *
14592 + *  Copyright (C) 2003-2011  Herbert P?tzl
14593 + *
14594 + *  V0.01  context helper
14595 + *  V0.02  vx_ctx_kill syscall command
14596 + *  V0.03  replaced context_info calls
14597 + *  V0.04  redesign of struct (de)alloc
14598 + *  V0.05  rlimit basic implementation
14599 + *  V0.06  task_xid and info commands
14600 + *  V0.07  context flags and caps
14601 + *  V0.08  switch to RCU based hash
14602 + *  V0.09  revert to non RCU for now
14603 + *  V0.10  and back to working RCU hash
14604 + *  V0.11  and back to locking again
14605 + *  V0.12  referenced context store
14606 + *  V0.13  separate per cpu data
14607 + *  V0.14  changed vcmds to vxi arg
14608 + *  V0.15  added context stat
14609 + *  V0.16  have __create claim() the vxi
14610 + *  V0.17  removed older and legacy stuff
14611 + *  V0.18  added user credentials
14612 + *  V0.19  added warn mask
14613 + *
14614 + */
14615 +
14616 +#include <linux/slab.h>
14617 +#include <linux/types.h>
14618 +#include <linux/security.h>
14619 +#include <linux/pid_namespace.h>
14620 +#include <linux/capability.h>
14621 +
14622 +#include <linux/vserver/context.h>
14623 +#include <linux/vserver/network.h>
14624 +#include <linux/vserver/debug.h>
14625 +#include <linux/vserver/limit.h>
14626 +#include <linux/vserver/limit_int.h>
14627 +#include <linux/vserver/space.h>
14628 +#include <linux/init_task.h>
14629 +#include <linux/fs_struct.h>
14630 +#include <linux/cred.h>
14631 +
14632 +#include <linux/vs_context.h>
14633 +#include <linux/vs_limit.h>
14634 +#include <linux/vs_pid.h>
14635 +#include <linux/vserver/context_cmd.h>
14636 +
14637 +#include "cvirt_init.h"
14638 +#include "cacct_init.h"
14639 +#include "limit_init.h"
14640 +#include "sched_init.h"
14641 +
14642 +
14643 +atomic_t vx_global_ctotal      = ATOMIC_INIT(0);
14644 +atomic_t vx_global_cactive     = ATOMIC_INIT(0);
14645 +
14646 +
14647 +/*     now inactive context structures */
14648 +
14649 +static struct hlist_head vx_info_inactive = HLIST_HEAD_INIT;
14650 +
14651 +static DEFINE_SPINLOCK(vx_info_inactive_lock);
14652 +
14653 +
14654 +/*     __alloc_vx_info()
14655 +
14656 +       * allocate an initialized vx_info struct
14657 +       * doesn't make it visible (hash)                        */
14658 +
14659 +static struct vx_info *__alloc_vx_info(vxid_t xid)
14660 +{
14661 +       struct vx_info *new = NULL;
14662 +       int cpu, index;
14663 +
14664 +       vxdprintk(VXD_CBIT(xid, 0), "alloc_vx_info(%d)*", xid);
14665 +
14666 +       /* would this benefit from a slab cache? */
14667 +       new = kmalloc(sizeof(struct vx_info), GFP_KERNEL);
14668 +       if (!new)
14669 +               return 0;
14670 +
14671 +       memset(new, 0, sizeof(struct vx_info));
14672 +#ifdef CONFIG_SMP
14673 +       new->ptr_pc = alloc_percpu(struct _vx_info_pc);
14674 +       if (!new->ptr_pc)
14675 +               goto error;
14676 +#endif
14677 +       new->vx_id = xid;
14678 +       INIT_HLIST_NODE(&new->vx_hlist);
14679 +       atomic_set(&new->vx_usecnt, 0);
14680 +       atomic_set(&new->vx_tasks, 0);
14681 +       new->vx_parent = NULL;
14682 +       new->vx_state = 0;
14683 +       init_waitqueue_head(&new->vx_wait);
14684 +
14685 +       /* prepare reaper */
14686 +       get_task_struct(init_pid_ns.child_reaper);
14687 +       new->vx_reaper = init_pid_ns.child_reaper;
14688 +       new->vx_badness_bias = 0;
14689 +
14690 +       /* rest of init goes here */
14691 +       vx_info_init_limit(&new->limit);
14692 +       vx_info_init_sched(&new->sched);
14693 +       vx_info_init_cvirt(&new->cvirt);
14694 +       vx_info_init_cacct(&new->cacct);
14695 +
14696 +       /* per cpu data structures */
14697 +       for_each_possible_cpu(cpu) {
14698 +               vx_info_init_sched_pc(
14699 +                       &vx_per_cpu(new, sched_pc, cpu), cpu);
14700 +               vx_info_init_cvirt_pc(
14701 +                       &vx_per_cpu(new, cvirt_pc, cpu), cpu);
14702 +       }
14703 +
14704 +       new->vx_flags = VXF_INIT_SET;
14705 +       new->vx_bcaps = CAP_FULL_SET;   // maybe ~CAP_SETPCAP
14706 +       new->vx_ccaps = 0;
14707 +       new->vx_umask = 0;
14708 +       new->vx_wmask = 0;
14709 +
14710 +       new->reboot_cmd = 0;
14711 +       new->exit_code = 0;
14712 +
14713 +       // preconfig spaces
14714 +       for (index = 0; index < VX_SPACES; index++) {
14715 +               struct _vx_space *space = &new->space[index];
14716 +
14717 +               // filesystem
14718 +               spin_lock(&init_fs.lock);
14719 +               init_fs.users++;
14720 +               spin_unlock(&init_fs.lock);
14721 +               space->vx_fs = &init_fs;
14722 +
14723 +               /* FIXME: do we want defaults? */
14724 +               // space->vx_real_cred = 0;
14725 +               // space->vx_cred = 0;
14726 +       }
14727 +
14728 +
14729 +       vxdprintk(VXD_CBIT(xid, 0),
14730 +               "alloc_vx_info(%d) = %p", xid, new);
14731 +       vxh_alloc_vx_info(new);
14732 +       atomic_inc(&vx_global_ctotal);
14733 +       return new;
14734 +#ifdef CONFIG_SMP
14735 +error:
14736 +       kfree(new);
14737 +       return 0;
14738 +#endif
14739 +}
14740 +
14741 +/*     __dealloc_vx_info()
14742 +
14743 +       * final disposal of vx_info                             */
14744 +
14745 +static void __dealloc_vx_info(struct vx_info *vxi)
14746 +{
14747 +#ifdef CONFIG_VSERVER_WARN
14748 +       struct vx_info_save vxis;
14749 +       int cpu;
14750 +#endif
14751 +       vxdprintk(VXD_CBIT(xid, 0),
14752 +               "dealloc_vx_info(%p)", vxi);
14753 +       vxh_dealloc_vx_info(vxi);
14754 +
14755 +#ifdef CONFIG_VSERVER_WARN
14756 +       enter_vx_info(vxi, &vxis);
14757 +       vx_info_exit_limit(&vxi->limit);
14758 +       vx_info_exit_sched(&vxi->sched);
14759 +       vx_info_exit_cvirt(&vxi->cvirt);
14760 +       vx_info_exit_cacct(&vxi->cacct);
14761 +
14762 +       for_each_possible_cpu(cpu) {
14763 +               vx_info_exit_sched_pc(
14764 +                       &vx_per_cpu(vxi, sched_pc, cpu), cpu);
14765 +               vx_info_exit_cvirt_pc(
14766 +                       &vx_per_cpu(vxi, cvirt_pc, cpu), cpu);
14767 +       }
14768 +       leave_vx_info(&vxis);
14769 +#endif
14770 +
14771 +       vxi->vx_id = -1;
14772 +       vxi->vx_state |= VXS_RELEASED;
14773 +
14774 +#ifdef CONFIG_SMP
14775 +       free_percpu(vxi->ptr_pc);
14776 +#endif
14777 +       kfree(vxi);
14778 +       atomic_dec(&vx_global_ctotal);
14779 +}
14780 +
14781 +static void __shutdown_vx_info(struct vx_info *vxi)
14782 +{
14783 +       struct nsproxy *nsproxy;
14784 +       struct fs_struct *fs;
14785 +       struct cred *cred;
14786 +       int index, kill;
14787 +
14788 +       might_sleep();
14789 +
14790 +       vxi->vx_state |= VXS_SHUTDOWN;
14791 +       vs_state_change(vxi, VSC_SHUTDOWN);
14792 +
14793 +       for (index = 0; index < VX_SPACES; index++) {
14794 +               struct _vx_space *space = &vxi->space[index];
14795 +
14796 +               nsproxy = xchg(&space->vx_nsproxy, NULL);
14797 +               if (nsproxy)
14798 +                       put_nsproxy(nsproxy);
14799 +
14800 +               fs = xchg(&space->vx_fs, NULL);
14801 +               spin_lock(&fs->lock);
14802 +               kill = !--fs->users;
14803 +               spin_unlock(&fs->lock);
14804 +               if (kill)
14805 +                       free_fs_struct(fs);
14806 +
14807 +               cred = (struct cred *)xchg(&space->vx_cred, NULL);
14808 +               if (cred)
14809 +                       abort_creds(cred);
14810 +       }
14811 +}
14812 +
14813 +/* exported stuff */
14814 +
14815 +void free_vx_info(struct vx_info *vxi)
14816 +{
14817 +       unsigned long flags;
14818 +       unsigned index;
14819 +
14820 +       /* check for reference counts first */
14821 +       BUG_ON(atomic_read(&vxi->vx_usecnt));
14822 +       BUG_ON(atomic_read(&vxi->vx_tasks));
14823 +
14824 +       /* context must not be hashed */
14825 +       BUG_ON(vx_info_state(vxi, VXS_HASHED));
14826 +
14827 +       /* context shutdown is mandatory */
14828 +       BUG_ON(!vx_info_state(vxi, VXS_SHUTDOWN));
14829 +
14830 +       /* spaces check */
14831 +       for (index = 0; index < VX_SPACES; index++) {
14832 +               struct _vx_space *space = &vxi->space[index];
14833 +
14834 +               BUG_ON(space->vx_nsproxy);
14835 +               BUG_ON(space->vx_fs);
14836 +               // BUG_ON(space->vx_real_cred);
14837 +               // BUG_ON(space->vx_cred);
14838 +       }
14839 +
14840 +       spin_lock_irqsave(&vx_info_inactive_lock, flags);
14841 +       hlist_del(&vxi->vx_hlist);
14842 +       spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
14843 +
14844 +       __dealloc_vx_info(vxi);
14845 +}
14846 +
14847 +
14848 +/*     hash table for vx_info hash */
14849 +
14850 +#define VX_HASH_SIZE   13
14851 +
14852 +static struct hlist_head vx_info_hash[VX_HASH_SIZE] =
14853 +       { [0 ... VX_HASH_SIZE-1] = HLIST_HEAD_INIT };
14854 +
14855 +static DEFINE_SPINLOCK(vx_info_hash_lock);
14856 +
14857 +
14858 +static inline unsigned int __hashval(vxid_t xid)
14859 +{
14860 +       return (xid % VX_HASH_SIZE);
14861 +}
14862 +
14863 +
14864 +
14865 +/*     __hash_vx_info()
14866 +
14867 +       * add the vxi to the global hash table
14868 +       * requires the hash_lock to be held                     */
14869 +
14870 +static inline void __hash_vx_info(struct vx_info *vxi)
14871 +{
14872 +       struct hlist_head *head;
14873 +
14874 +       vxd_assert_lock(&vx_info_hash_lock);
14875 +       vxdprintk(VXD_CBIT(xid, 4),
14876 +               "__hash_vx_info: %p[#%d]", vxi, vxi->vx_id);
14877 +       vxh_hash_vx_info(vxi);
14878 +
14879 +       /* context must not be hashed */
14880 +       BUG_ON(vx_info_state(vxi, VXS_HASHED));
14881 +
14882 +       vxi->vx_state |= VXS_HASHED;
14883 +       head = &vx_info_hash[__hashval(vxi->vx_id)];
14884 +       hlist_add_head(&vxi->vx_hlist, head);
14885 +       atomic_inc(&vx_global_cactive);
14886 +}
14887 +
14888 +/*     __unhash_vx_info()
14889 +
14890 +       * remove the vxi from the global hash table
14891 +       * requires the hash_lock to be held                     */
14892 +
14893 +static inline void __unhash_vx_info(struct vx_info *vxi)
14894 +{
14895 +       unsigned long flags;
14896 +
14897 +       vxd_assert_lock(&vx_info_hash_lock);
14898 +       vxdprintk(VXD_CBIT(xid, 4),
14899 +               "__unhash_vx_info: %p[#%d.%d.%d]", vxi, vxi->vx_id,
14900 +               atomic_read(&vxi->vx_usecnt), atomic_read(&vxi->vx_tasks));
14901 +       vxh_unhash_vx_info(vxi);
14902 +
14903 +       /* context must be hashed */
14904 +       BUG_ON(!vx_info_state(vxi, VXS_HASHED));
14905 +       /* but without tasks */
14906 +       BUG_ON(atomic_read(&vxi->vx_tasks));
14907 +
14908 +       vxi->vx_state &= ~VXS_HASHED;
14909 +       hlist_del_init(&vxi->vx_hlist);
14910 +       spin_lock_irqsave(&vx_info_inactive_lock, flags);
14911 +       hlist_add_head(&vxi->vx_hlist, &vx_info_inactive);
14912 +       spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
14913 +       atomic_dec(&vx_global_cactive);
14914 +}
14915 +
14916 +
14917 +/*     __lookup_vx_info()
14918 +
14919 +       * requires the hash_lock to be held
14920 +       * doesn't increment the vx_refcnt                       */
14921 +
14922 +static inline struct vx_info *__lookup_vx_info(vxid_t xid)
14923 +{
14924 +       struct hlist_head *head = &vx_info_hash[__hashval(xid)];
14925 +       struct hlist_node *pos;
14926 +       struct vx_info *vxi;
14927 +
14928 +       vxd_assert_lock(&vx_info_hash_lock);
14929 +       hlist_for_each(pos, head) {
14930 +               vxi = hlist_entry(pos, struct vx_info, vx_hlist);
14931 +
14932 +               if (vxi->vx_id == xid)
14933 +                       goto found;
14934 +       }
14935 +       vxi = NULL;
14936 +found:
14937 +       vxdprintk(VXD_CBIT(xid, 0),
14938 +               "__lookup_vx_info(#%u): %p[#%u]",
14939 +               xid, vxi, vxi ? vxi->vx_id : 0);
14940 +       vxh_lookup_vx_info(vxi, xid);
14941 +       return vxi;
14942 +}
14943 +
14944 +
14945 +/*     __create_vx_info()
14946 +
14947 +       * create the requested context
14948 +       * get(), claim() and hash it                            */
14949 +
14950 +static struct vx_info *__create_vx_info(int id)
14951 +{
14952 +       struct vx_info *new, *vxi = NULL;
14953 +
14954 +       vxdprintk(VXD_CBIT(xid, 1), "create_vx_info(%d)*", id);
14955 +
14956 +       if (!(new = __alloc_vx_info(id)))
14957 +               return ERR_PTR(-ENOMEM);
14958 +
14959 +       /* required to make dynamic xids unique */
14960 +       spin_lock(&vx_info_hash_lock);
14961 +
14962 +       /* static context requested */
14963 +       if ((vxi = __lookup_vx_info(id))) {
14964 +               vxdprintk(VXD_CBIT(xid, 0),
14965 +                       "create_vx_info(%d) = %p (already there)", id, vxi);
14966 +               if (vx_info_flags(vxi, VXF_STATE_SETUP, 0))
14967 +                       vxi = ERR_PTR(-EBUSY);
14968 +               else
14969 +                       vxi = ERR_PTR(-EEXIST);
14970 +               goto out_unlock;
14971 +       }
14972 +       /* new context */
14973 +       vxdprintk(VXD_CBIT(xid, 0),
14974 +               "create_vx_info(%d) = %p (new)", id, new);
14975 +       claim_vx_info(new, NULL);
14976 +       __hash_vx_info(get_vx_info(new));
14977 +       vxi = new, new = NULL;
14978 +
14979 +out_unlock:
14980 +       spin_unlock(&vx_info_hash_lock);
14981 +       vxh_create_vx_info(IS_ERR(vxi) ? NULL : vxi, id);
14982 +       if (new)
14983 +               __dealloc_vx_info(new);
14984 +       return vxi;
14985 +}
14986 +
14987 +
14988 +/*     exported stuff                                          */
14989 +
14990 +
14991 +void unhash_vx_info(struct vx_info *vxi)
14992 +{
14993 +       spin_lock(&vx_info_hash_lock);
14994 +       __unhash_vx_info(vxi);
14995 +       spin_unlock(&vx_info_hash_lock);
14996 +       __shutdown_vx_info(vxi);
14997 +       __wakeup_vx_info(vxi);
14998 +}
14999 +
15000 +
15001 +/*     lookup_vx_info()
15002 +
15003 +       * search for a vx_info and get() it
15004 +       * negative id means current                             */
15005 +
15006 +struct vx_info *lookup_vx_info(int id)
15007 +{
15008 +       struct vx_info *vxi = NULL;
15009 +
15010 +       if (id < 0) {
15011 +               vxi = get_vx_info(current_vx_info());
15012 +       } else if (id > 1) {
15013 +               spin_lock(&vx_info_hash_lock);
15014 +               vxi = get_vx_info(__lookup_vx_info(id));
15015 +               spin_unlock(&vx_info_hash_lock);
15016 +       }
15017 +       return vxi;
15018 +}
15019 +
15020 +/*     xid_is_hashed()
15021 +
15022 +       * verify that xid is still hashed                       */
15023 +
15024 +int xid_is_hashed(vxid_t xid)
15025 +{
15026 +       int hashed;
15027 +
15028 +       spin_lock(&vx_info_hash_lock);
15029 +       hashed = (__lookup_vx_info(xid) != NULL);
15030 +       spin_unlock(&vx_info_hash_lock);
15031 +       return hashed;
15032 +}
15033 +
15034 +#ifdef CONFIG_PROC_FS
15035 +
15036 +/*     get_xid_list()
15037 +
15038 +       * get a subset of hashed xids for proc
15039 +       * assumes size is at least one                          */
15040 +
15041 +int get_xid_list(int index, unsigned int *xids, int size)
15042 +{
15043 +       int hindex, nr_xids = 0;
15044 +
15045 +       /* only show current and children */
15046 +       if (!vx_check(0, VS_ADMIN | VS_WATCH)) {
15047 +               if (index > 0)
15048 +                       return 0;
15049 +               xids[nr_xids] = vx_current_xid();
15050 +               return 1;
15051 +       }
15052 +
15053 +       for (hindex = 0; hindex < VX_HASH_SIZE; hindex++) {
15054 +               struct hlist_head *head = &vx_info_hash[hindex];
15055 +               struct hlist_node *pos;
15056 +
15057 +               spin_lock(&vx_info_hash_lock);
15058 +               hlist_for_each(pos, head) {
15059 +                       struct vx_info *vxi;
15060 +
15061 +                       if (--index > 0)
15062 +                               continue;
15063 +
15064 +                       vxi = hlist_entry(pos, struct vx_info, vx_hlist);
15065 +                       xids[nr_xids] = vxi->vx_id;
15066 +                       if (++nr_xids >= size) {
15067 +                               spin_unlock(&vx_info_hash_lock);
15068 +                               goto out;
15069 +                       }
15070 +               }
15071 +               /* keep the lock time short */
15072 +               spin_unlock(&vx_info_hash_lock);
15073 +       }
15074 +out:
15075 +       return nr_xids;
15076 +}
15077 +#endif
15078 +
15079 +#ifdef CONFIG_VSERVER_DEBUG
15080 +
15081 +void   dump_vx_info_inactive(int level)
15082 +{
15083 +       struct hlist_node *entry, *next;
15084 +
15085 +       hlist_for_each_safe(entry, next, &vx_info_inactive) {
15086 +               struct vx_info *vxi =
15087 +                       list_entry(entry, struct vx_info, vx_hlist);
15088 +
15089 +               dump_vx_info(vxi, level);
15090 +       }
15091 +}
15092 +
15093 +#endif
15094 +
15095 +#if 0
15096 +int vx_migrate_user(struct task_struct *p, struct vx_info *vxi)
15097 +{
15098 +       struct user_struct *new_user, *old_user;
15099 +
15100 +       if (!p || !vxi)
15101 +               BUG();
15102 +
15103 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0))
15104 +               return -EACCES;
15105 +
15106 +       new_user = alloc_uid(vxi->vx_id, p->uid);
15107 +       if (!new_user)
15108 +               return -ENOMEM;
15109 +
15110 +       old_user = p->user;
15111 +       if (new_user != old_user) {
15112 +               atomic_inc(&new_user->processes);
15113 +               atomic_dec(&old_user->processes);
15114 +               p->user = new_user;
15115 +       }
15116 +       free_uid(old_user);
15117 +       return 0;
15118 +}
15119 +#endif
15120 +
15121 +#if 0
15122 +void vx_mask_cap_bset(struct vx_info *vxi, struct task_struct *p)
15123 +{
15124 +       // p->cap_effective &= vxi->vx_cap_bset;
15125 +       p->cap_effective =
15126 +               cap_intersect(p->cap_effective, vxi->cap_bset);
15127 +       // p->cap_inheritable &= vxi->vx_cap_bset;
15128 +       p->cap_inheritable =
15129 +               cap_intersect(p->cap_inheritable, vxi->cap_bset);
15130 +       // p->cap_permitted &= vxi->vx_cap_bset;
15131 +       p->cap_permitted =
15132 +               cap_intersect(p->cap_permitted, vxi->cap_bset);
15133 +}
15134 +#endif
15135 +
15136 +
15137 +#include <linux/file.h>
15138 +#include <linux/fdtable.h>
15139 +
15140 +static int vx_openfd_task(struct task_struct *tsk)
15141 +{
15142 +       struct files_struct *files = tsk->files;
15143 +       struct fdtable *fdt;
15144 +       const unsigned long *bptr;
15145 +       int count, total;
15146 +
15147 +       /* no rcu_read_lock() because of spin_lock() */
15148 +       spin_lock(&files->file_lock);
15149 +       fdt = files_fdtable(files);
15150 +       bptr = fdt->open_fds;
15151 +       count = fdt->max_fds / (sizeof(unsigned long) * 8);
15152 +       for (total = 0; count > 0; count--) {
15153 +               if (*bptr)
15154 +                       total += hweight_long(*bptr);
15155 +               bptr++;
15156 +       }
15157 +       spin_unlock(&files->file_lock);
15158 +       return total;
15159 +}
15160 +
15161 +
15162 +/*     for *space compatibility */
15163 +
15164 +asmlinkage long sys_unshare(unsigned long);
15165 +
15166 +/*
15167 + *     migrate task to new context
15168 + *     gets vxi, puts old_vxi on change
15169 + *     optionally unshares namespaces (hack)
15170 + */
15171 +
15172 +int vx_migrate_task(struct task_struct *p, struct vx_info *vxi, int unshare)
15173 +{
15174 +       struct vx_info *old_vxi;
15175 +       int ret = 0;
15176 +
15177 +       if (!p || !vxi)
15178 +               BUG();
15179 +
15180 +       vxdprintk(VXD_CBIT(xid, 5),
15181 +               "vx_migrate_task(%p,%p[#%d.%d])", p, vxi,
15182 +               vxi->vx_id, atomic_read(&vxi->vx_usecnt));
15183 +
15184 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0) &&
15185 +               !vx_info_flags(vxi, VXF_STATE_SETUP, 0))
15186 +               return -EACCES;
15187 +
15188 +       if (vx_info_state(vxi, VXS_SHUTDOWN))
15189 +               return -EFAULT;
15190 +
15191 +       old_vxi = task_get_vx_info(p);
15192 +       if (old_vxi == vxi)
15193 +               goto out;
15194 +
15195 +//     if (!(ret = vx_migrate_user(p, vxi))) {
15196 +       {
15197 +               int openfd;
15198 +
15199 +               task_lock(p);
15200 +               openfd = vx_openfd_task(p);
15201 +
15202 +               if (old_vxi) {
15203 +                       atomic_dec(&old_vxi->cvirt.nr_threads);
15204 +                       atomic_dec(&old_vxi->cvirt.nr_running);
15205 +                       __rlim_dec(&old_vxi->limit, RLIMIT_NPROC);
15206 +                       /* FIXME: what about the struct files here? */
15207 +                       __rlim_sub(&old_vxi->limit, VLIMIT_OPENFD, openfd);
15208 +                       /* account for the executable */
15209 +                       __rlim_dec(&old_vxi->limit, VLIMIT_DENTRY);
15210 +               }
15211 +               atomic_inc(&vxi->cvirt.nr_threads);
15212 +               atomic_inc(&vxi->cvirt.nr_running);
15213 +               __rlim_inc(&vxi->limit, RLIMIT_NPROC);
15214 +               /* FIXME: what about the struct files here? */
15215 +               __rlim_add(&vxi->limit, VLIMIT_OPENFD, openfd);
15216 +               /* account for the executable */
15217 +               __rlim_inc(&vxi->limit, VLIMIT_DENTRY);
15218 +
15219 +               if (old_vxi) {
15220 +                       release_vx_info(old_vxi, p);
15221 +                       clr_vx_info(&p->vx_info);
15222 +               }
15223 +               claim_vx_info(vxi, p);
15224 +               set_vx_info(&p->vx_info, vxi);
15225 +               p->xid = vxi->vx_id;
15226 +
15227 +               vxdprintk(VXD_CBIT(xid, 5),
15228 +                       "moved task %p into vxi:%p[#%d]",
15229 +                       p, vxi, vxi->vx_id);
15230 +
15231 +               // vx_mask_cap_bset(vxi, p);
15232 +               task_unlock(p);
15233 +
15234 +               /* hack for *spaces to provide compatibility */
15235 +               if (unshare) {
15236 +                       struct nsproxy *old_nsp, *new_nsp;
15237 +
15238 +                       ret = unshare_nsproxy_namespaces(
15239 +                               CLONE_NEWUTS | CLONE_NEWIPC | CLONE_NEWUSER,
15240 +                               &new_nsp, NULL, NULL);
15241 +                       if (ret)
15242 +                               goto out;
15243 +
15244 +                       old_nsp = xchg(&p->nsproxy, new_nsp);
15245 +                       vx_set_space(vxi,
15246 +                               CLONE_NEWUTS | CLONE_NEWIPC | CLONE_NEWUSER, 0);
15247 +                       put_nsproxy(old_nsp);
15248 +               }
15249 +       }
15250 +out:
15251 +       put_vx_info(old_vxi);
15252 +       return ret;
15253 +}
15254 +
15255 +int vx_set_reaper(struct vx_info *vxi, struct task_struct *p)
15256 +{
15257 +       struct task_struct *old_reaper;
15258 +       struct vx_info *reaper_vxi;
15259 +
15260 +       if (!vxi)
15261 +               return -EINVAL;
15262 +
15263 +       vxdprintk(VXD_CBIT(xid, 6),
15264 +               "vx_set_reaper(%p[#%d],%p[#%d,%d])",
15265 +               vxi, vxi->vx_id, p, p->xid, p->pid);
15266 +
15267 +       old_reaper = vxi->vx_reaper;
15268 +       if (old_reaper == p)
15269 +               return 0;
15270 +
15271 +       reaper_vxi = task_get_vx_info(p);
15272 +       if (reaper_vxi && reaper_vxi != vxi) {
15273 +               vxwprintk(1,
15274 +                       "Unsuitable reaper [" VS_Q("%s") ",%u:#%u] "
15275 +                       "for [xid #%u]",
15276 +                       p->comm, p->pid, p->xid, vx_current_xid());
15277 +               goto out;
15278 +       }
15279 +
15280 +       /* set new child reaper */
15281 +       get_task_struct(p);
15282 +       vxi->vx_reaper = p;
15283 +       put_task_struct(old_reaper);
15284 +out:
15285 +       put_vx_info(reaper_vxi);
15286 +       return 0;
15287 +}
15288 +
15289 +int vx_set_init(struct vx_info *vxi, struct task_struct *p)
15290 +{
15291 +       if (!vxi)
15292 +               return -EINVAL;
15293 +
15294 +       vxdprintk(VXD_CBIT(xid, 6),
15295 +               "vx_set_init(%p[#%d],%p[#%d,%d,%d])",
15296 +               vxi, vxi->vx_id, p, p->xid, p->pid, p->tgid);
15297 +
15298 +       vxi->vx_flags &= ~VXF_STATE_INIT;
15299 +       // vxi->vx_initpid = p->tgid;
15300 +       vxi->vx_initpid = p->pid;
15301 +       return 0;
15302 +}
15303 +
15304 +void vx_exit_init(struct vx_info *vxi, struct task_struct *p, int code)
15305 +{
15306 +       vxdprintk(VXD_CBIT(xid, 6),
15307 +               "vx_exit_init(%p[#%d],%p[#%d,%d,%d])",
15308 +               vxi, vxi->vx_id, p, p->xid, p->pid, p->tgid);
15309 +
15310 +       vxi->exit_code = code;
15311 +       vxi->vx_initpid = 0;
15312 +}
15313 +
15314 +
15315 +void vx_set_persistent(struct vx_info *vxi)
15316 +{
15317 +       vxdprintk(VXD_CBIT(xid, 6),
15318 +               "vx_set_persistent(%p[#%d])", vxi, vxi->vx_id);
15319 +
15320 +       get_vx_info(vxi);
15321 +       claim_vx_info(vxi, NULL);
15322 +}
15323 +
15324 +void vx_clear_persistent(struct vx_info *vxi)
15325 +{
15326 +       vxdprintk(VXD_CBIT(xid, 6),
15327 +               "vx_clear_persistent(%p[#%d])", vxi, vxi->vx_id);
15328 +
15329 +       release_vx_info(vxi, NULL);
15330 +       put_vx_info(vxi);
15331 +}
15332 +
15333 +void vx_update_persistent(struct vx_info *vxi)
15334 +{
15335 +       if (vx_info_flags(vxi, VXF_PERSISTENT, 0))
15336 +               vx_set_persistent(vxi);
15337 +       else
15338 +               vx_clear_persistent(vxi);
15339 +}
15340 +
15341 +
15342 +/*     task must be current or locked          */
15343 +
15344 +void   exit_vx_info(struct task_struct *p, int code)
15345 +{
15346 +       struct vx_info *vxi = p->vx_info;
15347 +
15348 +       if (vxi) {
15349 +               atomic_dec(&vxi->cvirt.nr_threads);
15350 +               vx_nproc_dec(p);
15351 +
15352 +               vxi->exit_code = code;
15353 +               release_vx_info(vxi, p);
15354 +       }
15355 +}
15356 +
15357 +void   exit_vx_info_early(struct task_struct *p, int code)
15358 +{
15359 +       struct vx_info *vxi = p->vx_info;
15360 +
15361 +       if (vxi) {
15362 +               if (vxi->vx_initpid == p->pid)
15363 +                       vx_exit_init(vxi, p, code);
15364 +               if (vxi->vx_reaper == p)
15365 +                       vx_set_reaper(vxi, init_pid_ns.child_reaper);
15366 +       }
15367 +}
15368 +
15369 +
15370 +/* vserver syscall commands below here */
15371 +
15372 +/* taks xid and vx_info functions */
15373 +
15374 +#include <asm/uaccess.h>
15375 +
15376 +
15377 +int vc_task_xid(uint32_t id)
15378 +{
15379 +       vxid_t xid;
15380 +
15381 +       if (id) {
15382 +               struct task_struct *tsk;
15383 +
15384 +               rcu_read_lock();
15385 +               tsk = find_task_by_real_pid(id);
15386 +               xid = (tsk) ? tsk->xid : -ESRCH;
15387 +               rcu_read_unlock();
15388 +       } else
15389 +               xid = vx_current_xid();
15390 +       return xid;
15391 +}
15392 +
15393 +
15394 +int vc_vx_info(struct vx_info *vxi, void __user *data)
15395 +{
15396 +       struct vcmd_vx_info_v0 vc_data;
15397 +
15398 +       vc_data.xid = vxi->vx_id;
15399 +       vc_data.initpid = vxi->vx_initpid;
15400 +
15401 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15402 +               return -EFAULT;
15403 +       return 0;
15404 +}
15405 +
15406 +
15407 +int vc_ctx_stat(struct vx_info *vxi, void __user *data)
15408 +{
15409 +       struct vcmd_ctx_stat_v0 vc_data;
15410 +
15411 +       vc_data.usecnt = atomic_read(&vxi->vx_usecnt);
15412 +       vc_data.tasks = atomic_read(&vxi->vx_tasks);
15413 +
15414 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15415 +               return -EFAULT;
15416 +       return 0;
15417 +}
15418 +
15419 +
15420 +/* context functions */
15421 +
15422 +int vc_ctx_create(uint32_t xid, void __user *data)
15423 +{
15424 +       struct vcmd_ctx_create vc_data = { .flagword = VXF_INIT_SET };
15425 +       struct vx_info *new_vxi;
15426 +       int ret;
15427 +
15428 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
15429 +               return -EFAULT;
15430 +
15431 +       if ((xid > MAX_S_CONTEXT) || (xid < 2))
15432 +               return -EINVAL;
15433 +
15434 +       new_vxi = __create_vx_info(xid);
15435 +       if (IS_ERR(new_vxi))
15436 +               return PTR_ERR(new_vxi);
15437 +
15438 +       /* initial flags */
15439 +       new_vxi->vx_flags = vc_data.flagword;
15440 +
15441 +       ret = -ENOEXEC;
15442 +       if (vs_state_change(new_vxi, VSC_STARTUP))
15443 +               goto out;
15444 +
15445 +       ret = vx_migrate_task(current, new_vxi, (!data));
15446 +       if (ret)
15447 +               goto out;
15448 +
15449 +       /* return context id on success */
15450 +       ret = new_vxi->vx_id;
15451 +
15452 +       /* get a reference for persistent contexts */
15453 +       if ((vc_data.flagword & VXF_PERSISTENT))
15454 +               vx_set_persistent(new_vxi);
15455 +out:
15456 +       release_vx_info(new_vxi, NULL);
15457 +       put_vx_info(new_vxi);
15458 +       return ret;
15459 +}
15460 +
15461 +
15462 +int vc_ctx_migrate(struct vx_info *vxi, void __user *data)
15463 +{
15464 +       struct vcmd_ctx_migrate vc_data = { .flagword = 0 };
15465 +       int ret;
15466 +
15467 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
15468 +               return -EFAULT;
15469 +
15470 +       ret = vx_migrate_task(current, vxi, 0);
15471 +       if (ret)
15472 +               return ret;
15473 +       if (vc_data.flagword & VXM_SET_INIT)
15474 +               ret = vx_set_init(vxi, current);
15475 +       if (ret)
15476 +               return ret;
15477 +       if (vc_data.flagword & VXM_SET_REAPER)
15478 +               ret = vx_set_reaper(vxi, current);
15479 +       return ret;
15480 +}
15481 +
15482 +
15483 +int vc_get_cflags(struct vx_info *vxi, void __user *data)
15484 +{
15485 +       struct vcmd_ctx_flags_v0 vc_data;
15486 +
15487 +       vc_data.flagword = vxi->vx_flags;
15488 +
15489 +       /* special STATE flag handling */
15490 +       vc_data.mask = vs_mask_flags(~0ULL, vxi->vx_flags, VXF_ONE_TIME);
15491 +
15492 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15493 +               return -EFAULT;
15494 +       return 0;
15495 +}
15496 +
15497 +int vc_set_cflags(struct vx_info *vxi, void __user *data)
15498 +{
15499 +       struct vcmd_ctx_flags_v0 vc_data;
15500 +       uint64_t mask, trigger;
15501 +
15502 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15503 +               return -EFAULT;
15504 +
15505 +       /* special STATE flag handling */
15506 +       mask = vs_mask_mask(vc_data.mask, vxi->vx_flags, VXF_ONE_TIME);
15507 +       trigger = (mask & vxi->vx_flags) ^ (mask & vc_data.flagword);
15508 +
15509 +       if (vxi == current_vx_info()) {
15510 +               /* if (trigger & VXF_STATE_SETUP)
15511 +                       vx_mask_cap_bset(vxi, current); */
15512 +               if (trigger & VXF_STATE_INIT) {
15513 +                       int ret;
15514 +
15515 +                       ret = vx_set_init(vxi, current);
15516 +                       if (ret)
15517 +                               return ret;
15518 +                       ret = vx_set_reaper(vxi, current);
15519 +                       if (ret)
15520 +                               return ret;
15521 +               }
15522 +       }
15523 +
15524 +       vxi->vx_flags = vs_mask_flags(vxi->vx_flags,
15525 +               vc_data.flagword, mask);
15526 +       if (trigger & VXF_PERSISTENT)
15527 +               vx_update_persistent(vxi);
15528 +
15529 +       return 0;
15530 +}
15531 +
15532 +
15533 +static inline uint64_t caps_from_cap_t(kernel_cap_t c)
15534 +{
15535 +       uint64_t v = c.cap[0] | ((uint64_t)c.cap[1] << 32);
15536 +
15537 +       // printk("caps_from_cap_t(%08x:%08x) = %016llx\n", c.cap[1], c.cap[0], v);
15538 +       return v;
15539 +}
15540 +
15541 +static inline kernel_cap_t cap_t_from_caps(uint64_t v)
15542 +{
15543 +       kernel_cap_t c = __cap_empty_set;
15544 +
15545 +       c.cap[0] = v & 0xFFFFFFFF;
15546 +       c.cap[1] = (v >> 32) & 0xFFFFFFFF;
15547 +
15548 +       // printk("cap_t_from_caps(%016llx) = %08x:%08x\n", v, c.cap[1], c.cap[0]);
15549 +       return c;
15550 +}
15551 +
15552 +
15553 +static int do_get_caps(struct vx_info *vxi, uint64_t *bcaps, uint64_t *ccaps)
15554 +{
15555 +       if (bcaps)
15556 +               *bcaps = caps_from_cap_t(vxi->vx_bcaps);
15557 +       if (ccaps)
15558 +               *ccaps = vxi->vx_ccaps;
15559 +
15560 +       return 0;
15561 +}
15562 +
15563 +int vc_get_ccaps(struct vx_info *vxi, void __user *data)
15564 +{
15565 +       struct vcmd_ctx_caps_v1 vc_data;
15566 +       int ret;
15567 +
15568 +       ret = do_get_caps(vxi, NULL, &vc_data.ccaps);
15569 +       if (ret)
15570 +               return ret;
15571 +       vc_data.cmask = ~0ULL;
15572 +
15573 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15574 +               return -EFAULT;
15575 +       return 0;
15576 +}
15577 +
15578 +static int do_set_caps(struct vx_info *vxi,
15579 +       uint64_t bcaps, uint64_t bmask, uint64_t ccaps, uint64_t cmask)
15580 +{
15581 +       uint64_t bcold = caps_from_cap_t(vxi->vx_bcaps);
15582 +
15583 +#if 0
15584 +       printk("do_set_caps(%16llx, %16llx, %16llx, %16llx)\n",
15585 +               bcaps, bmask, ccaps, cmask);
15586 +#endif
15587 +       vxi->vx_bcaps = cap_t_from_caps(
15588 +               vs_mask_flags(bcold, bcaps, bmask));
15589 +       vxi->vx_ccaps = vs_mask_flags(vxi->vx_ccaps, ccaps, cmask);
15590 +
15591 +       return 0;
15592 +}
15593 +
15594 +int vc_set_ccaps(struct vx_info *vxi, void __user *data)
15595 +{
15596 +       struct vcmd_ctx_caps_v1 vc_data;
15597 +
15598 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15599 +               return -EFAULT;
15600 +
15601 +       return do_set_caps(vxi, 0, 0, vc_data.ccaps, vc_data.cmask);
15602 +}
15603 +
15604 +int vc_get_bcaps(struct vx_info *vxi, void __user *data)
15605 +{
15606 +       struct vcmd_bcaps vc_data;
15607 +       int ret;
15608 +
15609 +       ret = do_get_caps(vxi, &vc_data.bcaps, NULL);
15610 +       if (ret)
15611 +               return ret;
15612 +       vc_data.bmask = ~0ULL;
15613 +
15614 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15615 +               return -EFAULT;
15616 +       return 0;
15617 +}
15618 +
15619 +int vc_set_bcaps(struct vx_info *vxi, void __user *data)
15620 +{
15621 +       struct vcmd_bcaps vc_data;
15622 +
15623 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15624 +               return -EFAULT;
15625 +
15626 +       return do_set_caps(vxi, vc_data.bcaps, vc_data.bmask, 0, 0);
15627 +}
15628 +
15629 +
15630 +int vc_get_umask(struct vx_info *vxi, void __user *data)
15631 +{
15632 +       struct vcmd_umask vc_data;
15633 +
15634 +       vc_data.umask = vxi->vx_umask;
15635 +       vc_data.mask = ~0ULL;
15636 +
15637 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15638 +               return -EFAULT;
15639 +       return 0;
15640 +}
15641 +
15642 +int vc_set_umask(struct vx_info *vxi, void __user *data)
15643 +{
15644 +       struct vcmd_umask vc_data;
15645 +
15646 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15647 +               return -EFAULT;
15648 +
15649 +       vxi->vx_umask = vs_mask_flags(vxi->vx_umask,
15650 +               vc_data.umask, vc_data.mask);
15651 +       return 0;
15652 +}
15653 +
15654 +
15655 +int vc_get_wmask(struct vx_info *vxi, void __user *data)
15656 +{
15657 +       struct vcmd_wmask vc_data;
15658 +
15659 +       vc_data.wmask = vxi->vx_wmask;
15660 +       vc_data.mask = ~0ULL;
15661 +
15662 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15663 +               return -EFAULT;
15664 +       return 0;
15665 +}
15666 +
15667 +int vc_set_wmask(struct vx_info *vxi, void __user *data)
15668 +{
15669 +       struct vcmd_wmask vc_data;
15670 +
15671 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15672 +               return -EFAULT;
15673 +
15674 +       vxi->vx_wmask = vs_mask_flags(vxi->vx_wmask,
15675 +               vc_data.wmask, vc_data.mask);
15676 +       return 0;
15677 +}
15678 +
15679 +
15680 +int vc_get_badness(struct vx_info *vxi, void __user *data)
15681 +{
15682 +       struct vcmd_badness_v0 vc_data;
15683 +
15684 +       vc_data.bias = vxi->vx_badness_bias;
15685 +
15686 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15687 +               return -EFAULT;
15688 +       return 0;
15689 +}
15690 +
15691 +int vc_set_badness(struct vx_info *vxi, void __user *data)
15692 +{
15693 +       struct vcmd_badness_v0 vc_data;
15694 +
15695 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15696 +               return -EFAULT;
15697 +
15698 +       vxi->vx_badness_bias = vc_data.bias;
15699 +       return 0;
15700 +}
15701 +
15702 +#include <linux/module.h>
15703 +
15704 +EXPORT_SYMBOL_GPL(free_vx_info);
15705 +
15706 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/cvirt.c linux-4.9/kernel/vserver/cvirt.c
15707 --- linux-4.9/kernel/vserver/cvirt.c    1970-01-01 01:00:00.000000000 +0100
15708 +++ linux-4.9/kernel/vserver/cvirt.c    2021-02-24 15:47:45.121077159 +0100
15709 @@ -0,0 +1,350 @@
15710 +/*
15711 + *  linux/kernel/vserver/cvirt.c
15712 + *
15713 + *  Virtual Server: Context Virtualization
15714 + *
15715 + *  Copyright (C) 2004-2007  Herbert P?tzl
15716 + *
15717 + *  V0.01  broken out from limit.c
15718 + *  V0.02  added utsname stuff
15719 + *  V0.03  changed vcmds to vxi arg
15720 + *
15721 + */
15722 +
15723 +#include <linux/types.h>
15724 +#include <linux/utsname.h>
15725 +#include <linux/vs_cvirt.h>
15726 +#include <linux/vserver/switch.h>
15727 +#include <linux/vserver/cvirt_cmd.h>
15728 +
15729 +#include <asm/uaccess.h>
15730 +
15731 +
15732 +void vx_vsi_boottime64(struct timespec64 *boottime)
15733 +{
15734 +       struct vx_info *vxi = current_vx_info();
15735 +
15736 +       set_normalized_timespec64(boottime,
15737 +               boottime->tv_sec + vxi->cvirt.bias_uptime.tv_sec,
15738 +               boottime->tv_nsec + vxi->cvirt.bias_uptime.tv_nsec);
15739 +       return;
15740 +}
15741 +
15742 +void vx_vsi_uptime(struct timespec *uptime, struct timespec *idle)
15743 +{
15744 +       struct vx_info *vxi = current_vx_info();
15745 +
15746 +       set_normalized_timespec(uptime,
15747 +               uptime->tv_sec - vxi->cvirt.bias_uptime.tv_sec,
15748 +               uptime->tv_nsec - vxi->cvirt.bias_uptime.tv_nsec);
15749 +       if (!idle)
15750 +               return;
15751 +       set_normalized_timespec(idle,
15752 +               idle->tv_sec - vxi->cvirt.bias_idle.tv_sec,
15753 +               idle->tv_nsec - vxi->cvirt.bias_idle.tv_nsec);
15754 +       return;
15755 +}
15756 +
15757 +uint64_t vx_idle_jiffies(void)
15758 +{
15759 +       return init_task.utime + init_task.stime;
15760 +}
15761 +
15762 +
15763 +
15764 +static inline uint32_t __update_loadavg(uint32_t load,
15765 +       int wsize, int delta, int n)
15766 +{
15767 +       unsigned long long calc, prev;
15768 +
15769 +       /* just set it to n */
15770 +       if (unlikely(delta >= wsize))
15771 +               return (n << FSHIFT);
15772 +
15773 +       calc = delta * n;
15774 +       calc <<= FSHIFT;
15775 +       prev = (wsize - delta);
15776 +       prev *= load;
15777 +       calc += prev;
15778 +       do_div(calc, wsize);
15779 +       return calc;
15780 +}
15781 +
15782 +
15783 +void vx_update_load(struct vx_info *vxi)
15784 +{
15785 +       uint32_t now, last, delta;
15786 +       unsigned int nr_running, nr_uninterruptible;
15787 +       unsigned int total;
15788 +       unsigned long flags;
15789 +
15790 +       spin_lock_irqsave(&vxi->cvirt.load_lock, flags);
15791 +
15792 +       now = jiffies;
15793 +       last = vxi->cvirt.load_last;
15794 +       delta = now - last;
15795 +
15796 +       if (delta < 5*HZ)
15797 +               goto out;
15798 +
15799 +       nr_running = atomic_read(&vxi->cvirt.nr_running);
15800 +       nr_uninterruptible = atomic_read(&vxi->cvirt.nr_uninterruptible);
15801 +       total = nr_running + nr_uninterruptible;
15802 +
15803 +       vxi->cvirt.load[0] = __update_loadavg(vxi->cvirt.load[0],
15804 +               60*HZ, delta, total);
15805 +       vxi->cvirt.load[1] = __update_loadavg(vxi->cvirt.load[1],
15806 +               5*60*HZ, delta, total);
15807 +       vxi->cvirt.load[2] = __update_loadavg(vxi->cvirt.load[2],
15808 +               15*60*HZ, delta, total);
15809 +
15810 +       vxi->cvirt.load_last = now;
15811 +out:
15812 +       atomic_inc(&vxi->cvirt.load_updates);
15813 +       spin_unlock_irqrestore(&vxi->cvirt.load_lock, flags);
15814 +}
15815 +
15816 +
15817 +/*
15818 + * Commands to do_syslog:
15819 + *
15820 + *      0 -- Close the log.  Currently a NOP.
15821 + *      1 -- Open the log. Currently a NOP.
15822 + *      2 -- Read from the log.
15823 + *      3 -- Read all messages remaining in the ring buffer.
15824 + *      4 -- Read and clear all messages remaining in the ring buffer
15825 + *      5 -- Clear ring buffer.
15826 + *      6 -- Disable printk's to console
15827 + *      7 -- Enable printk's to console
15828 + *      8 -- Set level of messages printed to console
15829 + *      9 -- Return number of unread characters in the log buffer
15830 + *     10 -- Return size of the log buffer
15831 + */
15832 +int vx_do_syslog(int type, char __user *buf, int len)
15833 +{
15834 +       int error = 0;
15835 +       int do_clear = 0;
15836 +       struct vx_info *vxi = current_vx_info();
15837 +       struct _vx_syslog *log;
15838 +
15839 +       if (!vxi)
15840 +               return -EINVAL;
15841 +       log = &vxi->cvirt.syslog;
15842 +
15843 +       switch (type) {
15844 +       case 0:         /* Close log */
15845 +       case 1:         /* Open log */
15846 +               break;
15847 +       case 2:         /* Read from log */
15848 +               error = wait_event_interruptible(log->log_wait,
15849 +                       (log->log_start - log->log_end));
15850 +               if (error)
15851 +                       break;
15852 +               spin_lock_irq(&log->logbuf_lock);
15853 +               spin_unlock_irq(&log->logbuf_lock);
15854 +               break;
15855 +       case 4:         /* Read/clear last kernel messages */
15856 +               do_clear = 1;
15857 +               /* fall through */
15858 +       case 3:         /* Read last kernel messages */
15859 +               return 0;
15860 +
15861 +       case 5:         /* Clear ring buffer */
15862 +               return 0;
15863 +
15864 +       case 6:         /* Disable logging to console */
15865 +       case 7:         /* Enable logging to console */
15866 +       case 8:         /* Set level of messages printed to console */
15867 +               break;
15868 +
15869 +       case 9:         /* Number of chars in the log buffer */
15870 +               return 0;
15871 +       case 10:        /* Size of the log buffer */
15872 +               return 0;
15873 +       default:
15874 +               error = -EINVAL;
15875 +               break;
15876 +       }
15877 +       return error;
15878 +}
15879 +
15880 +
15881 +/* virtual host info names */
15882 +
15883 +static char *vx_vhi_name(struct vx_info *vxi, int id)
15884 +{
15885 +       struct nsproxy *nsproxy;
15886 +       struct uts_namespace *uts;
15887 +
15888 +       if (id == VHIN_CONTEXT)
15889 +               return vxi->vx_name;
15890 +
15891 +       nsproxy = vxi->space[0].vx_nsproxy;
15892 +       if (!nsproxy)
15893 +               return NULL;
15894 +
15895 +       uts = nsproxy->uts_ns;
15896 +       if (!uts)
15897 +               return NULL;
15898 +
15899 +       switch (id) {
15900 +       case VHIN_SYSNAME:
15901 +               return uts->name.sysname;
15902 +       case VHIN_NODENAME:
15903 +               return uts->name.nodename;
15904 +       case VHIN_RELEASE:
15905 +               return uts->name.release;
15906 +       case VHIN_VERSION:
15907 +               return uts->name.version;
15908 +       case VHIN_MACHINE:
15909 +               return uts->name.machine;
15910 +       case VHIN_DOMAINNAME:
15911 +               return uts->name.domainname;
15912 +       default:
15913 +               return NULL;
15914 +       }
15915 +       return NULL;
15916 +}
15917 +
15918 +int vc_set_vhi_name(struct vx_info *vxi, void __user *data)
15919 +{
15920 +       struct vcmd_vhi_name_v0 vc_data;
15921 +       char *name;
15922 +
15923 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15924 +               return -EFAULT;
15925 +
15926 +       name = vx_vhi_name(vxi, vc_data.field);
15927 +       if (!name)
15928 +               return -EINVAL;
15929 +
15930 +       memcpy(name, vc_data.name, 65);
15931 +       return 0;
15932 +}
15933 +
15934 +int vc_get_vhi_name(struct vx_info *vxi, void __user *data)
15935 +{
15936 +       struct vcmd_vhi_name_v0 vc_data;
15937 +       char *name;
15938 +
15939 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
15940 +               return -EFAULT;
15941 +
15942 +       name = vx_vhi_name(vxi, vc_data.field);
15943 +       if (!name)
15944 +               return -EINVAL;
15945 +
15946 +       memcpy(vc_data.name, name, 65);
15947 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15948 +               return -EFAULT;
15949 +       return 0;
15950 +}
15951 +
15952 +
15953 +int vc_virt_stat(struct vx_info *vxi, void __user *data)
15954 +{
15955 +       struct vcmd_virt_stat_v0 vc_data;
15956 +       struct _vx_cvirt *cvirt = &vxi->cvirt;
15957 +       struct timespec64 uptime;
15958 +
15959 +       ktime_get_ts64(&uptime);
15960 +       set_normalized_timespec64(&uptime,
15961 +               uptime.tv_sec - cvirt->bias_uptime.tv_sec,
15962 +               uptime.tv_nsec - cvirt->bias_uptime.tv_nsec);
15963 +
15964 +       vc_data.offset = timespec64_to_ns(&cvirt->bias_ts);
15965 +       vc_data.uptime = timespec64_to_ns(&uptime);
15966 +       vc_data.nr_threads = atomic_read(&cvirt->nr_threads);
15967 +       vc_data.nr_running = atomic_read(&cvirt->nr_running);
15968 +       vc_data.nr_uninterruptible = atomic_read(&cvirt->nr_uninterruptible);
15969 +       vc_data.nr_onhold = atomic_read(&cvirt->nr_onhold);
15970 +       vc_data.nr_forks = atomic_read(&cvirt->total_forks);
15971 +       vc_data.load[0] = cvirt->load[0];
15972 +       vc_data.load[1] = cvirt->load[1];
15973 +       vc_data.load[2] = cvirt->load[2];
15974 +
15975 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
15976 +               return -EFAULT;
15977 +       return 0;
15978 +}
15979 +
15980 +
15981 +#ifdef CONFIG_VSERVER_VTIME
15982 +
15983 +/* virtualized time base */
15984 +
15985 +void vx_adjust_timespec(struct timespec *ts)
15986 +{
15987 +       struct vx_info *vxi;
15988 +
15989 +       if (!vx_flags(VXF_VIRT_TIME, 0))
15990 +               return;
15991 +
15992 +       vxi = current_vx_info();
15993 +       ts->tv_sec += vxi->cvirt.bias_ts.tv_sec;
15994 +       ts->tv_nsec += vxi->cvirt.bias_ts.tv_nsec;
15995 +
15996 +       if (ts->tv_nsec >= NSEC_PER_SEC) {
15997 +               ts->tv_sec++;
15998 +               ts->tv_nsec -= NSEC_PER_SEC;
15999 +       } else if (ts->tv_nsec < 0) {
16000 +               ts->tv_sec--;
16001 +               ts->tv_nsec += NSEC_PER_SEC;
16002 +       }
16003 +}
16004 +
16005 +void vx_adjust_timespec64(struct timespec64 *ts)
16006 +{
16007 +       struct vx_info *vxi;
16008 +
16009 +       if (!vx_flags(VXF_VIRT_TIME, 0))
16010 +               return;
16011 +
16012 +       vxi = current_vx_info();
16013 +       ts->tv_sec += vxi->cvirt.bias_ts.tv_sec;
16014 +       ts->tv_nsec += vxi->cvirt.bias_ts.tv_nsec;
16015 +
16016 +       if (ts->tv_nsec >= NSEC_PER_SEC) {
16017 +               ts->tv_sec++;
16018 +               ts->tv_nsec -= NSEC_PER_SEC;
16019 +       } else if (ts->tv_nsec < 0) {
16020 +               ts->tv_sec--;
16021 +               ts->tv_nsec += NSEC_PER_SEC;
16022 +       }
16023 +}
16024 +
16025 +int vx_settimeofday(const struct timespec *ts)
16026 +{
16027 +       struct timespec ats, delta;
16028 +       struct vx_info *vxi;
16029 +
16030 +       if (!vx_flags(VXF_VIRT_TIME, 0))
16031 +               return do_settimeofday(ts);
16032 +
16033 +       getnstimeofday(&ats);
16034 +       delta = timespec_sub(*ts, ats);
16035 +
16036 +       vxi = current_vx_info();
16037 +       vxi->cvirt.bias_ts = timespec64_add(vxi->cvirt.bias_ts,
16038 +               timespec_to_timespec64(delta));
16039 +       return 0;
16040 +}
16041 +
16042 +int vx_settimeofday64(const struct timespec64 *ts)
16043 +{
16044 +       struct timespec64 ats, delta;
16045 +       struct vx_info *vxi;
16046 +
16047 +       if (!vx_flags(VXF_VIRT_TIME, 0))
16048 +               return do_settimeofday64(ts);
16049 +
16050 +       getnstimeofday64(&ats);
16051 +       delta = timespec64_sub(*ts, ats);
16052 +
16053 +       vxi = current_vx_info();
16054 +       vxi->cvirt.bias_ts = timespec64_add(vxi->cvirt.bias_ts, delta);
16055 +       return 0;
16056 +}
16057 +
16058 +#endif
16059 +
16060 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/cvirt_init.h linux-4.9/kernel/vserver/cvirt_init.h
16061 --- linux-4.9/kernel/vserver/cvirt_init.h       1970-01-01 01:00:00.000000000 +0100
16062 +++ linux-4.9/kernel/vserver/cvirt_init.h       2021-02-24 15:47:45.121077159 +0100
16063 @@ -0,0 +1,70 @@
16064 +
16065 +
16066 +extern uint64_t vx_idle_jiffies(void);
16067 +
16068 +static inline void vx_info_init_cvirt(struct _vx_cvirt *cvirt)
16069 +{
16070 +       uint64_t idle_jiffies = vx_idle_jiffies();
16071 +       uint64_t nsuptime;
16072 +
16073 +       ktime_get_ts64(&cvirt->bias_uptime);
16074 +       nsuptime = (unsigned long long)cvirt->bias_uptime.tv_sec
16075 +               * NSEC_PER_SEC + cvirt->bias_uptime.tv_nsec;
16076 +       cvirt->bias_clock = nsec_to_clock_t(nsuptime);
16077 +       cvirt->bias_ts.tv_sec = 0;
16078 +       cvirt->bias_ts.tv_nsec = 0;
16079 +
16080 +       jiffies_to_timespec64(idle_jiffies, &cvirt->bias_idle);
16081 +       atomic_set(&cvirt->nr_threads, 0);
16082 +       atomic_set(&cvirt->nr_running, 0);
16083 +       atomic_set(&cvirt->nr_uninterruptible, 0);
16084 +       atomic_set(&cvirt->nr_onhold, 0);
16085 +
16086 +       spin_lock_init(&cvirt->load_lock);
16087 +       cvirt->load_last = jiffies;
16088 +       atomic_set(&cvirt->load_updates, 0);
16089 +       cvirt->load[0] = 0;
16090 +       cvirt->load[1] = 0;
16091 +       cvirt->load[2] = 0;
16092 +       atomic_set(&cvirt->total_forks, 0);
16093 +
16094 +       spin_lock_init(&cvirt->syslog.logbuf_lock);
16095 +       init_waitqueue_head(&cvirt->syslog.log_wait);
16096 +       cvirt->syslog.log_start = 0;
16097 +       cvirt->syslog.log_end = 0;
16098 +       cvirt->syslog.con_start = 0;
16099 +       cvirt->syslog.logged_chars = 0;
16100 +}
16101 +
16102 +static inline
16103 +void vx_info_init_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc, int cpu)
16104 +{
16105 +       // cvirt_pc->cpustat = { 0 };
16106 +}
16107 +
16108 +static inline void vx_info_exit_cvirt(struct _vx_cvirt *cvirt)
16109 +{
16110 +#ifdef CONFIG_VSERVER_WARN
16111 +       int value;
16112 +#endif
16113 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_threads)),
16114 +               "!!! cvirt: %p[nr_threads] = %d on exit.",
16115 +               cvirt, value);
16116 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_running)),
16117 +               "!!! cvirt: %p[nr_running] = %d on exit.",
16118 +               cvirt, value);
16119 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_uninterruptible)),
16120 +               "!!! cvirt: %p[nr_uninterruptible] = %d on exit.",
16121 +               cvirt, value);
16122 +       vxwprintk_xid((value = atomic_read(&cvirt->nr_onhold)),
16123 +               "!!! cvirt: %p[nr_onhold] = %d on exit.",
16124 +               cvirt, value);
16125 +       return;
16126 +}
16127 +
16128 +static inline
16129 +void vx_info_exit_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc, int cpu)
16130 +{
16131 +       return;
16132 +}
16133 +
16134 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/cvirt_proc.h linux-4.9/kernel/vserver/cvirt_proc.h
16135 --- linux-4.9/kernel/vserver/cvirt_proc.h       1970-01-01 01:00:00.000000000 +0100
16136 +++ linux-4.9/kernel/vserver/cvirt_proc.h       2021-02-24 15:47:45.121077159 +0100
16137 @@ -0,0 +1,123 @@
16138 +#ifndef _VX_CVIRT_PROC_H
16139 +#define _VX_CVIRT_PROC_H
16140 +
16141 +#include <linux/nsproxy.h>
16142 +#include <linux/mnt_namespace.h>
16143 +#include <linux/ipc_namespace.h>
16144 +#include <linux/utsname.h>
16145 +#include <linux/ipc.h>
16146 +
16147 +extern int vx_info_mnt_namespace(struct mnt_namespace *, char *);
16148 +
16149 +static inline
16150 +int vx_info_proc_nsproxy(struct nsproxy *nsproxy, char *buffer)
16151 +{
16152 +       struct mnt_namespace *ns;
16153 +       struct uts_namespace *uts;
16154 +       struct ipc_namespace *ipc;
16155 +       int length = 0;
16156 +
16157 +       if (!nsproxy)
16158 +               goto out;
16159 +
16160 +       length += sprintf(buffer + length,
16161 +               "NSProxy:\t%p [%p,%p,%p]\n",
16162 +               nsproxy, nsproxy->mnt_ns,
16163 +               nsproxy->uts_ns, nsproxy->ipc_ns);
16164 +
16165 +       ns = nsproxy->mnt_ns;
16166 +       if (!ns)
16167 +               goto skip_ns;
16168 +
16169 +       length += vx_info_mnt_namespace(ns, buffer + length);
16170 +
16171 +skip_ns:
16172 +
16173 +       uts = nsproxy->uts_ns;
16174 +       if (!uts)
16175 +               goto skip_uts;
16176 +
16177 +       length += sprintf(buffer + length,
16178 +               "SysName:\t%.*s\n"
16179 +               "NodeName:\t%.*s\n"
16180 +               "Release:\t%.*s\n"
16181 +               "Version:\t%.*s\n"
16182 +               "Machine:\t%.*s\n"
16183 +               "DomainName:\t%.*s\n",
16184 +               __NEW_UTS_LEN, uts->name.sysname,
16185 +               __NEW_UTS_LEN, uts->name.nodename,
16186 +               __NEW_UTS_LEN, uts->name.release,
16187 +               __NEW_UTS_LEN, uts->name.version,
16188 +               __NEW_UTS_LEN, uts->name.machine,
16189 +               __NEW_UTS_LEN, uts->name.domainname);
16190 +skip_uts:
16191 +
16192 +       ipc = nsproxy->ipc_ns;
16193 +       if (!ipc)
16194 +               goto skip_ipc;
16195 +
16196 +       length += sprintf(buffer + length,
16197 +               "SEMS:\t\t%d %d %d %d  %d\n"
16198 +               "MSG:\t\t%d %d %d\n"
16199 +               "SHM:\t\t%lu %lu  %d %ld\n",
16200 +               ipc->sem_ctls[0], ipc->sem_ctls[1],
16201 +               ipc->sem_ctls[2], ipc->sem_ctls[3],
16202 +               ipc->used_sems,
16203 +               ipc->msg_ctlmax, ipc->msg_ctlmnb, ipc->msg_ctlmni,
16204 +               (unsigned long)ipc->shm_ctlmax,
16205 +               (unsigned long)ipc->shm_ctlall,
16206 +               ipc->shm_ctlmni, ipc->shm_tot);
16207 +skip_ipc:
16208 +out:
16209 +       return length;
16210 +}
16211 +
16212 +
16213 +#include <linux/sched.h>
16214 +
16215 +#define LOAD_INT(x) ((x) >> FSHIFT)
16216 +#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1 - 1)) * 100)
16217 +
16218 +static inline
16219 +int vx_info_proc_cvirt(struct _vx_cvirt *cvirt, char *buffer)
16220 +{
16221 +       int length = 0;
16222 +       int a, b, c;
16223 +
16224 +       length += sprintf(buffer + length,
16225 +               "BiasUptime:\t%llu.%02lu\n",
16226 +               (unsigned long long)cvirt->bias_uptime.tv_sec,
16227 +               (cvirt->bias_uptime.tv_nsec / (NSEC_PER_SEC / 100)));
16228 +
16229 +       a = cvirt->load[0] + (FIXED_1 / 200);
16230 +       b = cvirt->load[1] + (FIXED_1 / 200);
16231 +       c = cvirt->load[2] + (FIXED_1 / 200);
16232 +       length += sprintf(buffer + length,
16233 +               "nr_threads:\t%d\n"
16234 +               "nr_running:\t%d\n"
16235 +               "nr_unintr:\t%d\n"
16236 +               "nr_onhold:\t%d\n"
16237 +               "load_updates:\t%d\n"
16238 +               "loadavg:\t%d.%02d %d.%02d %d.%02d\n"
16239 +               "total_forks:\t%d\n",
16240 +               atomic_read(&cvirt->nr_threads),
16241 +               atomic_read(&cvirt->nr_running),
16242 +               atomic_read(&cvirt->nr_uninterruptible),
16243 +               atomic_read(&cvirt->nr_onhold),
16244 +               atomic_read(&cvirt->load_updates),
16245 +               LOAD_INT(a), LOAD_FRAC(a),
16246 +               LOAD_INT(b), LOAD_FRAC(b),
16247 +               LOAD_INT(c), LOAD_FRAC(c),
16248 +               atomic_read(&cvirt->total_forks));
16249 +       return length;
16250 +}
16251 +
16252 +static inline
16253 +int vx_info_proc_cvirt_pc(struct _vx_cvirt_pc *cvirt_pc,
16254 +       char *buffer, int cpu)
16255 +{
16256 +       int length = 0;
16257 +       return length;
16258 +}
16259 +
16260 +#endif /* _VX_CVIRT_PROC_H */
16261 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/debug.c linux-4.9/kernel/vserver/debug.c
16262 --- linux-4.9/kernel/vserver/debug.c    1970-01-01 01:00:00.000000000 +0100
16263 +++ linux-4.9/kernel/vserver/debug.c    2021-02-24 15:47:45.121077159 +0100
16264 @@ -0,0 +1,32 @@
16265 +/*
16266 + *  kernel/vserver/debug.c
16267 + *
16268 + *  Copyright (C) 2005-2007 Herbert P?tzl
16269 + *
16270 + *  V0.01  vx_info dump support
16271 + *
16272 + */
16273 +
16274 +#include <linux/module.h>
16275 +
16276 +#include <linux/vserver/context.h>
16277 +
16278 +
16279 +void   dump_vx_info(struct vx_info *vxi, int level)
16280 +{
16281 +       printk("vx_info %p[#%d, %d.%d, %4x]\n", vxi, vxi->vx_id,
16282 +               atomic_read(&vxi->vx_usecnt),
16283 +               atomic_read(&vxi->vx_tasks),
16284 +               vxi->vx_state);
16285 +       if (level > 0) {
16286 +               __dump_vx_limit(&vxi->limit);
16287 +               __dump_vx_sched(&vxi->sched);
16288 +               __dump_vx_cvirt(&vxi->cvirt);
16289 +               __dump_vx_cacct(&vxi->cacct);
16290 +       }
16291 +       printk("---\n");
16292 +}
16293 +
16294 +
16295 +EXPORT_SYMBOL_GPL(dump_vx_info);
16296 +
16297 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/device.c linux-4.9/kernel/vserver/device.c
16298 --- linux-4.9/kernel/vserver/device.c   1970-01-01 01:00:00.000000000 +0100
16299 +++ linux-4.9/kernel/vserver/device.c   2021-02-24 15:47:45.121077159 +0100
16300 @@ -0,0 +1,443 @@
16301 +/*
16302 + *  linux/kernel/vserver/device.c
16303 + *
16304 + *  Linux-VServer: Device Support
16305 + *
16306 + *  Copyright (C) 2006  Herbert P?tzl
16307 + *  Copyright (C) 2007  Daniel Hokka Zakrisson
16308 + *
16309 + *  V0.01  device mapping basics
16310 + *  V0.02  added defaults
16311 + *
16312 + */
16313 +
16314 +#include <linux/slab.h>
16315 +#include <linux/rcupdate.h>
16316 +#include <linux/fs.h>
16317 +#include <linux/namei.h>
16318 +#include <linux/hash.h>
16319 +
16320 +#include <asm/errno.h>
16321 +#include <asm/uaccess.h>
16322 +#include <linux/vserver/base.h>
16323 +#include <linux/vserver/debug.h>
16324 +#include <linux/vserver/context.h>
16325 +#include <linux/vserver/device.h>
16326 +#include <linux/vserver/device_cmd.h>
16327 +
16328 +
16329 +#define DMAP_HASH_BITS 4
16330 +
16331 +
16332 +struct vs_mapping {
16333 +       union {
16334 +               struct hlist_node hlist;
16335 +               struct list_head list;
16336 +       } u;
16337 +#define dm_hlist       u.hlist
16338 +#define dm_list                u.list
16339 +       vxid_t xid;
16340 +       dev_t device;
16341 +       struct vx_dmap_target target;
16342 +};
16343 +
16344 +
16345 +static struct hlist_head dmap_main_hash[1 << DMAP_HASH_BITS];
16346 +
16347 +static DEFINE_SPINLOCK(dmap_main_hash_lock);
16348 +
16349 +static struct vx_dmap_target dmap_defaults[2] = {
16350 +       { .flags = DATTR_OPEN },
16351 +       { .flags = DATTR_OPEN },
16352 +};
16353 +
16354 +
16355 +struct kmem_cache *dmap_cachep __read_mostly;
16356 +
16357 +int __init dmap_cache_init(void)
16358 +{
16359 +       dmap_cachep = kmem_cache_create("dmap_cache",
16360 +               sizeof(struct vs_mapping), 0,
16361 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
16362 +       return 0;
16363 +}
16364 +
16365 +__initcall(dmap_cache_init);
16366 +
16367 +
16368 +static inline unsigned int __hashval(dev_t dev, int bits)
16369 +{
16370 +       return hash_long((unsigned long)dev, bits);
16371 +}
16372 +
16373 +
16374 +/*     __hash_mapping()
16375 + *     add the mapping to the hash table
16376 + */
16377 +static inline void __hash_mapping(struct vx_info *vxi, struct vs_mapping *vdm)
16378 +{
16379 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16380 +       struct hlist_head *head, *hash = dmap_main_hash;
16381 +       int device = vdm->device;
16382 +
16383 +       spin_lock(hash_lock);
16384 +       vxdprintk(VXD_CBIT(misc, 8), "__hash_mapping: %p[#%d] %08x:%08x",
16385 +               vxi, vxi ? vxi->vx_id : 0, device, vdm->target.target);
16386 +
16387 +       head = &hash[__hashval(device, DMAP_HASH_BITS)];
16388 +       hlist_add_head(&vdm->dm_hlist, head);
16389 +       spin_unlock(hash_lock);
16390 +}
16391 +
16392 +
16393 +static inline int __mode_to_default(umode_t mode)
16394 +{
16395 +       switch (mode) {
16396 +       case S_IFBLK:
16397 +               return 0;
16398 +       case S_IFCHR:
16399 +               return 1;
16400 +       default:
16401 +               BUG();
16402 +       }
16403 +}
16404 +
16405 +
16406 +/*     __set_default()
16407 + *     set a default
16408 + */
16409 +static inline void __set_default(struct vx_info *vxi, umode_t mode,
16410 +       struct vx_dmap_target *vdmt)
16411 +{
16412 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16413 +       spin_lock(hash_lock);
16414 +
16415 +       if (vxi)
16416 +               vxi->dmap.targets[__mode_to_default(mode)] = *vdmt;
16417 +       else
16418 +               dmap_defaults[__mode_to_default(mode)] = *vdmt;
16419 +
16420 +
16421 +       spin_unlock(hash_lock);
16422 +
16423 +       vxdprintk(VXD_CBIT(misc, 8), "__set_default: %p[#%u] %08x %04x",
16424 +                 vxi, vxi ? vxi->vx_id : 0, vdmt->target, vdmt->flags);
16425 +}
16426 +
16427 +
16428 +/*     __remove_default()
16429 + *     remove a default
16430 + */
16431 +static inline int __remove_default(struct vx_info *vxi, umode_t mode)
16432 +{
16433 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16434 +       spin_lock(hash_lock);
16435 +
16436 +       if (vxi)
16437 +               vxi->dmap.targets[__mode_to_default(mode)].flags = 0;
16438 +       else    /* remove == reset */
16439 +               dmap_defaults[__mode_to_default(mode)].flags = DATTR_OPEN | mode;
16440 +
16441 +       spin_unlock(hash_lock);
16442 +       return 0;
16443 +}
16444 +
16445 +
16446 +/*     __find_mapping()
16447 + *     find a mapping in the hash table
16448 + *
16449 + *     caller must hold hash_lock
16450 + */
16451 +static inline int __find_mapping(vxid_t xid, dev_t device, umode_t mode,
16452 +       struct vs_mapping **local, struct vs_mapping **global)
16453 +{
16454 +       struct hlist_head *hash = dmap_main_hash;
16455 +       struct hlist_head *head = &hash[__hashval(device, DMAP_HASH_BITS)];
16456 +       struct hlist_node *pos;
16457 +       struct vs_mapping *vdm;
16458 +
16459 +       *local = NULL;
16460 +       if (global)
16461 +               *global = NULL;
16462 +
16463 +       hlist_for_each(pos, head) {
16464 +               vdm = hlist_entry(pos, struct vs_mapping, dm_hlist);
16465 +
16466 +               if ((vdm->device == device) &&
16467 +                       !((vdm->target.flags ^ mode) & S_IFMT)) {
16468 +                       if (vdm->xid == xid) {
16469 +                               *local = vdm;
16470 +                               return 1;
16471 +                       } else if (global && vdm->xid == 0)
16472 +                               *global = vdm;
16473 +               }
16474 +       }
16475 +
16476 +       if (global && *global)
16477 +               return 0;
16478 +       else
16479 +               return -ENOENT;
16480 +}
16481 +
16482 +
16483 +/*     __lookup_mapping()
16484 + *     find a mapping and store the result in target and flags
16485 + */
16486 +static inline int __lookup_mapping(struct vx_info *vxi,
16487 +       dev_t device, dev_t *target, int *flags, umode_t mode)
16488 +{
16489 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16490 +       struct vs_mapping *vdm, *global;
16491 +       struct vx_dmap_target *vdmt;
16492 +       int ret = 0;
16493 +       vxid_t xid = vxi->vx_id;
16494 +       int index;
16495 +
16496 +       spin_lock(hash_lock);
16497 +       if (__find_mapping(xid, device, mode, &vdm, &global) > 0) {
16498 +               ret = 1;
16499 +               vdmt = &vdm->target;
16500 +               goto found;
16501 +       }
16502 +
16503 +       index = __mode_to_default(mode);
16504 +       if (vxi && vxi->dmap.targets[index].flags) {
16505 +               ret = 2;
16506 +               vdmt = &vxi->dmap.targets[index];
16507 +       } else if (global) {
16508 +               ret = 3;
16509 +               vdmt = &global->target;
16510 +               goto found;
16511 +       } else {
16512 +               ret = 4;
16513 +               vdmt = &dmap_defaults[index];
16514 +       }
16515 +
16516 +found:
16517 +       if (target && (vdmt->flags & DATTR_REMAP))
16518 +               *target = vdmt->target;
16519 +       else if (target)
16520 +               *target = device;
16521 +       if (flags)
16522 +               *flags = vdmt->flags;
16523 +
16524 +       spin_unlock(hash_lock);
16525 +
16526 +       return ret;
16527 +}
16528 +
16529 +
16530 +/*     __remove_mapping()
16531 + *     remove a mapping from the hash table
16532 + */
16533 +static inline int __remove_mapping(struct vx_info *vxi, dev_t device,
16534 +       umode_t mode)
16535 +{
16536 +       spinlock_t *hash_lock = &dmap_main_hash_lock;
16537 +       struct vs_mapping *vdm = NULL;
16538 +       int ret = 0;
16539 +
16540 +       spin_lock(hash_lock);
16541 +
16542 +       ret = __find_mapping((vxi ? vxi->vx_id : 0), device, mode, &vdm,
16543 +               NULL);
16544 +       vxdprintk(VXD_CBIT(misc, 8), "__remove_mapping: %p[#%d] %08x %04x",
16545 +               vxi, vxi ? vxi->vx_id : 0, device, mode);
16546 +       if (ret < 0)
16547 +               goto out;
16548 +       hlist_del(&vdm->dm_hlist);
16549 +
16550 +out:
16551 +       spin_unlock(hash_lock);
16552 +       if (vdm)
16553 +               kmem_cache_free(dmap_cachep, vdm);
16554 +       return ret;
16555 +}
16556 +
16557 +
16558 +
16559 +int vs_map_device(struct vx_info *vxi,
16560 +       dev_t device, dev_t *target, umode_t mode)
16561 +{
16562 +       int ret, flags = DATTR_MASK;
16563 +
16564 +       if (!vxi) {
16565 +               if (target)
16566 +                       *target = device;
16567 +               goto out;
16568 +       }
16569 +       ret = __lookup_mapping(vxi, device, target, &flags, mode);
16570 +       vxdprintk(VXD_CBIT(misc, 8), "vs_map_device: %08x target: %08x flags: %04x mode: %04x mapped=%d",
16571 +               device, target ? *target : 0, flags, mode, ret);
16572 +out:
16573 +       return (flags & DATTR_MASK);
16574 +}
16575 +
16576 +
16577 +
16578 +static int do_set_mapping(struct vx_info *vxi,
16579 +       dev_t device, dev_t target, int flags, umode_t mode)
16580 +{
16581 +       if (device) {
16582 +               struct vs_mapping *new;
16583 +
16584 +               new = kmem_cache_alloc(dmap_cachep, GFP_KERNEL);
16585 +               if (!new)
16586 +                       return -ENOMEM;
16587 +
16588 +               INIT_HLIST_NODE(&new->dm_hlist);
16589 +               new->device = device;
16590 +               new->target.target = target;
16591 +               new->target.flags = flags | mode;
16592 +               new->xid = (vxi ? vxi->vx_id : 0);
16593 +
16594 +               vxdprintk(VXD_CBIT(misc, 8), "do_set_mapping: %08x target: %08x flags: %04x", device, target, flags);
16595 +               __hash_mapping(vxi, new);
16596 +       } else {
16597 +               struct vx_dmap_target new = {
16598 +                       .target = target,
16599 +                       .flags = flags | mode,
16600 +               };
16601 +               __set_default(vxi, mode, &new);
16602 +       }
16603 +       return 0;
16604 +}
16605 +
16606 +
16607 +static int do_unset_mapping(struct vx_info *vxi,
16608 +       dev_t device, dev_t target, int flags, umode_t mode)
16609 +{
16610 +       int ret = -EINVAL;
16611 +
16612 +       if (device) {
16613 +               ret = __remove_mapping(vxi, device, mode);
16614 +               if (ret < 0)
16615 +                       goto out;
16616 +       } else {
16617 +               ret = __remove_default(vxi, mode);
16618 +               if (ret < 0)
16619 +                       goto out;
16620 +       }
16621 +
16622 +out:
16623 +       return ret;
16624 +}
16625 +
16626 +
16627 +static inline int __user_device(const char __user *name, dev_t *dev,
16628 +       umode_t *mode)
16629 +{
16630 +       struct path path;
16631 +       int ret;
16632 +
16633 +       if (!name) {
16634 +               *dev = 0;
16635 +               return 0;
16636 +       }
16637 +       ret = user_lpath(name, &path);
16638 +       if (ret)
16639 +               return ret;
16640 +       if (path.dentry->d_inode) {
16641 +               *dev = path.dentry->d_inode->i_rdev;
16642 +               *mode = path.dentry->d_inode->i_mode;
16643 +       }
16644 +       path_put(&path);
16645 +       return 0;
16646 +}
16647 +
16648 +static inline int __mapping_mode(dev_t device, dev_t target,
16649 +       umode_t device_mode, umode_t target_mode, umode_t *mode)
16650 +{
16651 +       if (device)
16652 +               *mode = device_mode & S_IFMT;
16653 +       else if (target)
16654 +               *mode = target_mode & S_IFMT;
16655 +       else
16656 +               return -EINVAL;
16657 +
16658 +       /* if both given, device and target mode have to match */
16659 +       if (device && target &&
16660 +               ((device_mode ^ target_mode) & S_IFMT))
16661 +               return -EINVAL;
16662 +       return 0;
16663 +}
16664 +
16665 +
16666 +static inline int do_mapping(struct vx_info *vxi, const char __user *device_path,
16667 +       const char __user *target_path, int flags, int set)
16668 +{
16669 +       dev_t device = ~0, target = ~0;
16670 +       umode_t device_mode = 0, target_mode = 0, mode;
16671 +       int ret;
16672 +
16673 +       ret = __user_device(device_path, &device, &device_mode);
16674 +       if (ret)
16675 +               return ret;
16676 +       ret = __user_device(target_path, &target, &target_mode);
16677 +       if (ret)
16678 +               return ret;
16679 +
16680 +       ret = __mapping_mode(device, target,
16681 +               device_mode, target_mode, &mode);
16682 +       if (ret)
16683 +               return ret;
16684 +
16685 +       if (set)
16686 +               return do_set_mapping(vxi, device, target,
16687 +                       flags, mode);
16688 +       else
16689 +               return do_unset_mapping(vxi, device, target,
16690 +                       flags, mode);
16691 +}
16692 +
16693 +
16694 +int vc_set_mapping(struct vx_info *vxi, void __user *data)
16695 +{
16696 +       struct vcmd_set_mapping_v0 vc_data;
16697 +
16698 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16699 +               return -EFAULT;
16700 +
16701 +       return do_mapping(vxi, vc_data.device, vc_data.target,
16702 +               vc_data.flags, 1);
16703 +}
16704 +
16705 +int vc_unset_mapping(struct vx_info *vxi, void __user *data)
16706 +{
16707 +       struct vcmd_set_mapping_v0 vc_data;
16708 +
16709 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16710 +               return -EFAULT;
16711 +
16712 +       return do_mapping(vxi, vc_data.device, vc_data.target,
16713 +               vc_data.flags, 0);
16714 +}
16715 +
16716 +
16717 +#ifdef CONFIG_COMPAT
16718 +
16719 +int vc_set_mapping_x32(struct vx_info *vxi, void __user *data)
16720 +{
16721 +       struct vcmd_set_mapping_v0_x32 vc_data;
16722 +
16723 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16724 +               return -EFAULT;
16725 +
16726 +       return do_mapping(vxi, compat_ptr(vc_data.device_ptr),
16727 +               compat_ptr(vc_data.target_ptr), vc_data.flags, 1);
16728 +}
16729 +
16730 +int vc_unset_mapping_x32(struct vx_info *vxi, void __user *data)
16731 +{
16732 +       struct vcmd_set_mapping_v0_x32 vc_data;
16733 +
16734 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16735 +               return -EFAULT;
16736 +
16737 +       return do_mapping(vxi, compat_ptr(vc_data.device_ptr),
16738 +               compat_ptr(vc_data.target_ptr), vc_data.flags, 0);
16739 +}
16740 +
16741 +#endif /* CONFIG_COMPAT */
16742 +
16743 +
16744 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/dlimit.c linux-4.9/kernel/vserver/dlimit.c
16745 --- linux-4.9/kernel/vserver/dlimit.c   1970-01-01 01:00:00.000000000 +0100
16746 +++ linux-4.9/kernel/vserver/dlimit.c   2021-02-24 15:47:45.121077159 +0100
16747 @@ -0,0 +1,528 @@
16748 +/*
16749 + *  linux/kernel/vserver/dlimit.c
16750 + *
16751 + *  Virtual Server: Context Disk Limits
16752 + *
16753 + *  Copyright (C) 2004-2009  Herbert P?tzl
16754 + *
16755 + *  V0.01  initial version
16756 + *  V0.02  compat32 splitup
16757 + *  V0.03  extended interface
16758 + *
16759 + */
16760 +
16761 +#include <linux/statfs.h>
16762 +#include <linux/sched.h>
16763 +#include <linux/namei.h>
16764 +#include <linux/vs_tag.h>
16765 +#include <linux/vs_dlimit.h>
16766 +#include <linux/vserver/dlimit_cmd.h>
16767 +#include <linux/slab.h>
16768 +// #include <linux/gfp.h>
16769 +
16770 +#include <asm/uaccess.h>
16771 +
16772 +/*     __alloc_dl_info()
16773 +
16774 +       * allocate an initialized dl_info struct
16775 +       * doesn't make it visible (hash)                        */
16776 +
16777 +static struct dl_info *__alloc_dl_info(struct super_block *sb, vtag_t tag)
16778 +{
16779 +       struct dl_info *new = NULL;
16780 +
16781 +       vxdprintk(VXD_CBIT(dlim, 5),
16782 +               "alloc_dl_info(%p,%d)*", sb, tag);
16783 +
16784 +       /* would this benefit from a slab cache? */
16785 +       new = kmalloc(sizeof(struct dl_info), GFP_KERNEL);
16786 +       if (!new)
16787 +               return 0;
16788 +
16789 +       memset(new, 0, sizeof(struct dl_info));
16790 +       new->dl_tag = tag;
16791 +       new->dl_sb = sb;
16792 +       // INIT_RCU_HEAD(&new->dl_rcu);
16793 +       INIT_HLIST_NODE(&new->dl_hlist);
16794 +       spin_lock_init(&new->dl_lock);
16795 +       atomic_set(&new->dl_refcnt, 0);
16796 +       atomic_set(&new->dl_usecnt, 0);
16797 +
16798 +       /* rest of init goes here */
16799 +
16800 +       vxdprintk(VXD_CBIT(dlim, 4),
16801 +               "alloc_dl_info(%p,%d) = %p", sb, tag, new);
16802 +       return new;
16803 +}
16804 +
16805 +/*     __dealloc_dl_info()
16806 +
16807 +       * final disposal of dl_info                             */
16808 +
16809 +static void __dealloc_dl_info(struct dl_info *dli)
16810 +{
16811 +       vxdprintk(VXD_CBIT(dlim, 4),
16812 +               "dealloc_dl_info(%p)", dli);
16813 +
16814 +       dli->dl_hlist.next = LIST_POISON1;
16815 +       dli->dl_tag = -1;
16816 +       dli->dl_sb = 0;
16817 +
16818 +       BUG_ON(atomic_read(&dli->dl_usecnt));
16819 +       BUG_ON(atomic_read(&dli->dl_refcnt));
16820 +
16821 +       kfree(dli);
16822 +}
16823 +
16824 +
16825 +/*     hash table for dl_info hash */
16826 +
16827 +#define DL_HASH_SIZE   13
16828 +
16829 +struct hlist_head dl_info_hash[DL_HASH_SIZE];
16830 +
16831 +static DEFINE_SPINLOCK(dl_info_hash_lock);
16832 +
16833 +
16834 +static inline unsigned int __hashval(struct super_block *sb, vtag_t tag)
16835 +{
16836 +       return ((tag ^ (unsigned long)sb) % DL_HASH_SIZE);
16837 +}
16838 +
16839 +
16840 +
16841 +/*     __hash_dl_info()
16842 +
16843 +       * add the dli to the global hash table
16844 +       * requires the hash_lock to be held                     */
16845 +
16846 +static inline void __hash_dl_info(struct dl_info *dli)
16847 +{
16848 +       struct hlist_head *head;
16849 +
16850 +       vxdprintk(VXD_CBIT(dlim, 6),
16851 +               "__hash_dl_info: %p[#%d]", dli, dli->dl_tag);
16852 +       get_dl_info(dli);
16853 +       head = &dl_info_hash[__hashval(dli->dl_sb, dli->dl_tag)];
16854 +       hlist_add_head_rcu(&dli->dl_hlist, head);
16855 +}
16856 +
16857 +/*     __unhash_dl_info()
16858 +
16859 +       * remove the dli from the global hash table
16860 +       * requires the hash_lock to be held                     */
16861 +
16862 +static inline void __unhash_dl_info(struct dl_info *dli)
16863 +{
16864 +       vxdprintk(VXD_CBIT(dlim, 6),
16865 +               "__unhash_dl_info: %p[#%d]", dli, dli->dl_tag);
16866 +       hlist_del_rcu(&dli->dl_hlist);
16867 +       put_dl_info(dli);
16868 +}
16869 +
16870 +
16871 +/*     __lookup_dl_info()
16872 +
16873 +       * requires the rcu_read_lock()
16874 +       * doesn't increment the dl_refcnt                       */
16875 +
16876 +static inline struct dl_info *__lookup_dl_info(struct super_block *sb, vtag_t tag)
16877 +{
16878 +       struct hlist_head *head = &dl_info_hash[__hashval(sb, tag)];
16879 +       struct dl_info *dli;
16880 +
16881 +       hlist_for_each_entry_rcu(dli, head, dl_hlist) {
16882 +               if (dli->dl_tag == tag && dli->dl_sb == sb)
16883 +                       return dli;
16884 +       }
16885 +       return NULL;
16886 +}
16887 +
16888 +
16889 +struct dl_info *locate_dl_info(struct super_block *sb, vtag_t tag)
16890 +{
16891 +       struct dl_info *dli;
16892 +
16893 +       rcu_read_lock();
16894 +       dli = get_dl_info(__lookup_dl_info(sb, tag));
16895 +       vxdprintk(VXD_CBIT(dlim, 7),
16896 +               "locate_dl_info(%p,#%d) = %p", sb, tag, dli);
16897 +       rcu_read_unlock();
16898 +       return dli;
16899 +}
16900 +
16901 +void rcu_free_dl_info(struct rcu_head *head)
16902 +{
16903 +       struct dl_info *dli = container_of(head, struct dl_info, dl_rcu);
16904 +       int usecnt, refcnt;
16905 +
16906 +       BUG_ON(!dli || !head);
16907 +
16908 +       usecnt = atomic_read(&dli->dl_usecnt);
16909 +       BUG_ON(usecnt < 0);
16910 +
16911 +       refcnt = atomic_read(&dli->dl_refcnt);
16912 +       BUG_ON(refcnt < 0);
16913 +
16914 +       vxdprintk(VXD_CBIT(dlim, 3),
16915 +               "rcu_free_dl_info(%p)", dli);
16916 +       if (!usecnt)
16917 +               __dealloc_dl_info(dli);
16918 +       else
16919 +               printk("!!! rcu didn't free\n");
16920 +}
16921 +
16922 +
16923 +
16924 +
16925 +static int do_addrem_dlimit(uint32_t id, const char __user *name,
16926 +       uint32_t flags, int add)
16927 +{
16928 +       struct path path;
16929 +       int ret;
16930 +
16931 +       ret = user_lpath(name, &path);
16932 +       if (!ret) {
16933 +               struct super_block *sb;
16934 +               struct dl_info *dli;
16935 +
16936 +               ret = -EINVAL;
16937 +               if (!path.dentry->d_inode)
16938 +                       goto out_release;
16939 +               if (!(sb = path.dentry->d_inode->i_sb))
16940 +                       goto out_release;
16941 +
16942 +               if (add) {
16943 +                       dli = __alloc_dl_info(sb, id);
16944 +                       spin_lock(&dl_info_hash_lock);
16945 +
16946 +                       ret = -EEXIST;
16947 +                       if (__lookup_dl_info(sb, id))
16948 +                               goto out_unlock;
16949 +                       __hash_dl_info(dli);
16950 +                       dli = NULL;
16951 +               } else {
16952 +                       spin_lock(&dl_info_hash_lock);
16953 +                       dli = __lookup_dl_info(sb, id);
16954 +
16955 +                       ret = -ESRCH;
16956 +                       if (!dli)
16957 +                               goto out_unlock;
16958 +                       __unhash_dl_info(dli);
16959 +               }
16960 +               ret = 0;
16961 +       out_unlock:
16962 +               spin_unlock(&dl_info_hash_lock);
16963 +               if (add && dli)
16964 +                       __dealloc_dl_info(dli);
16965 +       out_release:
16966 +               path_put(&path);
16967 +       }
16968 +       return ret;
16969 +}
16970 +
16971 +int vc_add_dlimit(uint32_t id, void __user *data)
16972 +{
16973 +       struct vcmd_ctx_dlimit_base_v0 vc_data;
16974 +
16975 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16976 +               return -EFAULT;
16977 +
16978 +       return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 1);
16979 +}
16980 +
16981 +int vc_rem_dlimit(uint32_t id, void __user *data)
16982 +{
16983 +       struct vcmd_ctx_dlimit_base_v0 vc_data;
16984 +
16985 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16986 +               return -EFAULT;
16987 +
16988 +       return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 0);
16989 +}
16990 +
16991 +#ifdef CONFIG_COMPAT
16992 +
16993 +int vc_add_dlimit_x32(uint32_t id, void __user *data)
16994 +{
16995 +       struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
16996 +
16997 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
16998 +               return -EFAULT;
16999 +
17000 +       return do_addrem_dlimit(id,
17001 +               compat_ptr(vc_data.name_ptr), vc_data.flags, 1);
17002 +}
17003 +
17004 +int vc_rem_dlimit_x32(uint32_t id, void __user *data)
17005 +{
17006 +       struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
17007 +
17008 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17009 +               return -EFAULT;
17010 +
17011 +       return do_addrem_dlimit(id,
17012 +               compat_ptr(vc_data.name_ptr), vc_data.flags, 0);
17013 +}
17014 +
17015 +#endif /* CONFIG_COMPAT */
17016 +
17017 +
17018 +static inline
17019 +int do_set_dlimit(uint32_t id, const char __user *name,
17020 +       uint32_t space_used, uint32_t space_total,
17021 +       uint32_t inodes_used, uint32_t inodes_total,
17022 +       uint32_t reserved, uint32_t flags)
17023 +{
17024 +       struct path path;
17025 +       int ret;
17026 +
17027 +       ret = user_lpath(name, &path);
17028 +       if (!ret) {
17029 +               struct super_block *sb;
17030 +               struct dl_info *dli;
17031 +
17032 +               ret = -EINVAL;
17033 +               if (!path.dentry->d_inode)
17034 +                       goto out_release;
17035 +               if (!(sb = path.dentry->d_inode->i_sb))
17036 +                       goto out_release;
17037 +
17038 +               /* sanity checks */
17039 +               if ((reserved != CDLIM_KEEP &&
17040 +                       reserved > 100) ||
17041 +                       (inodes_used != CDLIM_KEEP &&
17042 +                       inodes_used > inodes_total) ||
17043 +                       (space_used != CDLIM_KEEP &&
17044 +                       space_used > space_total))
17045 +                       goto out_release;
17046 +
17047 +               ret = -ESRCH;
17048 +               dli = locate_dl_info(sb, id);
17049 +               if (!dli)
17050 +                       goto out_release;
17051 +
17052 +               spin_lock(&dli->dl_lock);
17053 +
17054 +               if (inodes_used != CDLIM_KEEP)
17055 +                       dli->dl_inodes_used = inodes_used;
17056 +               if (inodes_total != CDLIM_KEEP)
17057 +                       dli->dl_inodes_total = inodes_total;
17058 +               if (space_used != CDLIM_KEEP)
17059 +                       dli->dl_space_used = dlimit_space_32to64(
17060 +                               space_used, flags, DLIMS_USED);
17061 +
17062 +               if (space_total == CDLIM_INFINITY)
17063 +                       dli->dl_space_total = DLIM_INFINITY;
17064 +               else if (space_total != CDLIM_KEEP)
17065 +                       dli->dl_space_total = dlimit_space_32to64(
17066 +                               space_total, flags, DLIMS_TOTAL);
17067 +
17068 +               if (reserved != CDLIM_KEEP)
17069 +                       dli->dl_nrlmult = (1 << 10) * (100 - reserved) / 100;
17070 +
17071 +               spin_unlock(&dli->dl_lock);
17072 +
17073 +               put_dl_info(dli);
17074 +               ret = 0;
17075 +
17076 +       out_release:
17077 +               path_put(&path);
17078 +       }
17079 +       return ret;
17080 +}
17081 +
17082 +int vc_set_dlimit(uint32_t id, void __user *data)
17083 +{
17084 +       struct vcmd_ctx_dlimit_v0 vc_data;
17085 +
17086 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17087 +               return -EFAULT;
17088 +
17089 +       return do_set_dlimit(id, vc_data.name,
17090 +               vc_data.space_used, vc_data.space_total,
17091 +               vc_data.inodes_used, vc_data.inodes_total,
17092 +               vc_data.reserved, vc_data.flags);
17093 +}
17094 +
17095 +#ifdef CONFIG_COMPAT
17096 +
17097 +int vc_set_dlimit_x32(uint32_t id, void __user *data)
17098 +{
17099 +       struct vcmd_ctx_dlimit_v0_x32 vc_data;
17100 +
17101 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17102 +               return -EFAULT;
17103 +
17104 +       return do_set_dlimit(id, compat_ptr(vc_data.name_ptr),
17105 +               vc_data.space_used, vc_data.space_total,
17106 +               vc_data.inodes_used, vc_data.inodes_total,
17107 +               vc_data.reserved, vc_data.flags);
17108 +}
17109 +
17110 +#endif /* CONFIG_COMPAT */
17111 +
17112 +
17113 +static inline
17114 +int do_get_dlimit(uint32_t id, const char __user *name,
17115 +       uint32_t *space_used, uint32_t *space_total,
17116 +       uint32_t *inodes_used, uint32_t *inodes_total,
17117 +       uint32_t *reserved, uint32_t *flags)
17118 +{
17119 +       struct path path;
17120 +       int ret;
17121 +
17122 +       ret = user_lpath(name, &path);
17123 +       if (!ret) {
17124 +               struct super_block *sb;
17125 +               struct dl_info *dli;
17126 +
17127 +               ret = -EINVAL;
17128 +               if (!path.dentry->d_inode)
17129 +                       goto out_release;
17130 +               if (!(sb = path.dentry->d_inode->i_sb))
17131 +                       goto out_release;
17132 +
17133 +               ret = -ESRCH;
17134 +               dli = locate_dl_info(sb, id);
17135 +               if (!dli)
17136 +                       goto out_release;
17137 +
17138 +               spin_lock(&dli->dl_lock);
17139 +               *inodes_used = dli->dl_inodes_used;
17140 +               *inodes_total = dli->dl_inodes_total;
17141 +
17142 +               *space_used = dlimit_space_64to32(
17143 +                       dli->dl_space_used, flags, DLIMS_USED);
17144 +
17145 +               if (dli->dl_space_total == DLIM_INFINITY)
17146 +                       *space_total = CDLIM_INFINITY;
17147 +               else
17148 +                       *space_total = dlimit_space_64to32(
17149 +                               dli->dl_space_total, flags, DLIMS_TOTAL);
17150 +
17151 +               *reserved = 100 - ((dli->dl_nrlmult * 100 + 512) >> 10);
17152 +               spin_unlock(&dli->dl_lock);
17153 +
17154 +               put_dl_info(dli);
17155 +               ret = -EFAULT;
17156 +
17157 +               ret = 0;
17158 +       out_release:
17159 +               path_put(&path);
17160 +       }
17161 +       return ret;
17162 +}
17163 +
17164 +
17165 +int vc_get_dlimit(uint32_t id, void __user *data)
17166 +{
17167 +       struct vcmd_ctx_dlimit_v0 vc_data;
17168 +       int ret;
17169 +
17170 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17171 +               return -EFAULT;
17172 +
17173 +       ret = do_get_dlimit(id, vc_data.name,
17174 +               &vc_data.space_used, &vc_data.space_total,
17175 +               &vc_data.inodes_used, &vc_data.inodes_total,
17176 +               &vc_data.reserved, &vc_data.flags);
17177 +       if (ret)
17178 +               return ret;
17179 +
17180 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17181 +               return -EFAULT;
17182 +       return 0;
17183 +}
17184 +
17185 +#ifdef CONFIG_COMPAT
17186 +
17187 +int vc_get_dlimit_x32(uint32_t id, void __user *data)
17188 +{
17189 +       struct vcmd_ctx_dlimit_v0_x32 vc_data;
17190 +       int ret;
17191 +
17192 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17193 +               return -EFAULT;
17194 +
17195 +       ret = do_get_dlimit(id, compat_ptr(vc_data.name_ptr),
17196 +               &vc_data.space_used, &vc_data.space_total,
17197 +               &vc_data.inodes_used, &vc_data.inodes_total,
17198 +               &vc_data.reserved, &vc_data.flags);
17199 +       if (ret)
17200 +               return ret;
17201 +
17202 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17203 +               return -EFAULT;
17204 +       return 0;
17205 +}
17206 +
17207 +#endif /* CONFIG_COMPAT */
17208 +
17209 +
17210 +void vx_vsi_statfs(struct super_block *sb, struct kstatfs *buf)
17211 +{
17212 +       struct dl_info *dli;
17213 +       __u64 blimit, bfree, bavail;
17214 +       __u32 ifree;
17215 +
17216 +       dli = locate_dl_info(sb, dx_current_tag());
17217 +       if (!dli)
17218 +               return;
17219 +
17220 +       spin_lock(&dli->dl_lock);
17221 +       if (dli->dl_inodes_total == (unsigned long)DLIM_INFINITY)
17222 +               goto no_ilim;
17223 +
17224 +       /* reduce max inodes available to limit */
17225 +       if (buf->f_files > dli->dl_inodes_total)
17226 +               buf->f_files = dli->dl_inodes_total;
17227 +
17228 +       ifree = dli->dl_inodes_total - dli->dl_inodes_used;
17229 +       /* reduce free inodes to min */
17230 +       if (ifree < buf->f_ffree)
17231 +               buf->f_ffree = ifree;
17232 +
17233 +no_ilim:
17234 +       if (dli->dl_space_total == DLIM_INFINITY)
17235 +               goto no_blim;
17236 +
17237 +       blimit = dli->dl_space_total >> sb->s_blocksize_bits;
17238 +
17239 +       if (dli->dl_space_total < dli->dl_space_used)
17240 +               bfree = 0;
17241 +       else
17242 +               bfree = (dli->dl_space_total - dli->dl_space_used)
17243 +                       >> sb->s_blocksize_bits;
17244 +
17245 +       bavail = ((dli->dl_space_total >> 10) * dli->dl_nrlmult);
17246 +       if (bavail < dli->dl_space_used)
17247 +               bavail = 0;
17248 +       else
17249 +               bavail = (bavail - dli->dl_space_used)
17250 +                       >> sb->s_blocksize_bits;
17251 +
17252 +       /* reduce max space available to limit */
17253 +       if (buf->f_blocks > blimit)
17254 +               buf->f_blocks = blimit;
17255 +
17256 +       /* reduce free space to min */
17257 +       if (bfree < buf->f_bfree)
17258 +               buf->f_bfree = bfree;
17259 +
17260 +       /* reduce avail space to min */
17261 +       if (bavail < buf->f_bavail)
17262 +               buf->f_bavail = bavail;
17263 +
17264 +no_blim:
17265 +       spin_unlock(&dli->dl_lock);
17266 +       put_dl_info(dli);
17267 +
17268 +       return;
17269 +}
17270 +
17271 +#include <linux/module.h>
17272 +
17273 +EXPORT_SYMBOL_GPL(locate_dl_info);
17274 +EXPORT_SYMBOL_GPL(rcu_free_dl_info);
17275 +
17276 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/helper.c linux-4.9/kernel/vserver/helper.c
17277 --- linux-4.9/kernel/vserver/helper.c   1970-01-01 01:00:00.000000000 +0100
17278 +++ linux-4.9/kernel/vserver/helper.c   2021-02-24 15:47:45.124410596 +0100
17279 @@ -0,0 +1,242 @@
17280 +/*
17281 + *  linux/kernel/vserver/helper.c
17282 + *
17283 + *  Virtual Context Support
17284 + *
17285 + *  Copyright (C) 2004-2007  Herbert P?tzl
17286 + *
17287 + *  V0.01  basic helper
17288 + *
17289 + */
17290 +
17291 +#include <linux/kmod.h>
17292 +#include <linux/reboot.h>
17293 +#include <linux/vs_context.h>
17294 +#include <linux/vs_network.h>
17295 +#include <linux/vserver/signal.h>
17296 +
17297 +
17298 +char vshelper_path[255] = "/sbin/vshelper";
17299 +
17300 +static int vshelper_init(struct subprocess_info *info, struct cred *new_cred)
17301 +{
17302 +       current->flags &= ~PF_NO_SETAFFINITY;
17303 +       return 0;
17304 +}
17305 +
17306 +static int vs_call_usermodehelper(char *path, char **argv, char **envp, int wait)
17307 +{
17308 +       struct subprocess_info *info;
17309 +       gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
17310 +
17311 +       info = call_usermodehelper_setup(path, argv, envp, gfp_mask,
17312 +                                        vshelper_init, NULL, NULL);
17313 +       if (info == NULL)
17314 +               return -ENOMEM;
17315 +
17316 +       return call_usermodehelper_exec(info, wait);
17317 +}
17318 +
17319 +static int do_vshelper(char *name, char *argv[], char *envp[], int sync)
17320 +{
17321 +       int ret;
17322 +
17323 +       if ((ret = vs_call_usermodehelper(name, argv, envp,
17324 +               sync ? UMH_WAIT_PROC : UMH_WAIT_EXEC))) {
17325 +               printk(KERN_WARNING "%s: (%s %s) returned %s with %d\n",
17326 +                       name, argv[1], argv[2],
17327 +                       sync ? "sync" : "async", ret);
17328 +       }
17329 +       vxdprintk(VXD_CBIT(switch, 4),
17330 +               "%s: (%s %s) returned %s with %d",
17331 +               name, argv[1], argv[2], sync ? "sync" : "async", ret);
17332 +       return ret;
17333 +}
17334 +
17335 +/*
17336 + *      vshelper path is set via /proc/sys
17337 + *      invoked by vserver sys_reboot(), with
17338 + *      the following arguments
17339 + *
17340 + *      argv [0] = vshelper_path;
17341 + *      argv [1] = action: "restart", "halt", "poweroff", ...
17342 + *      argv [2] = context identifier
17343 + *
17344 + *      envp [*] = type-specific parameters
17345 + */
17346 +
17347 +long vs_reboot_helper(struct vx_info *vxi, int cmd, void __user *arg)
17348 +{
17349 +       char id_buf[8], cmd_buf[16];
17350 +       char uid_buf[16], pid_buf[16];
17351 +       int ret;
17352 +
17353 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17354 +       char *envp[] = {"HOME=/", "TERM=linux",
17355 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
17356 +                       uid_buf, pid_buf, cmd_buf, 0};
17357 +
17358 +       if (vx_info_state(vxi, VXS_HELPER))
17359 +               return -EAGAIN;
17360 +       vxi->vx_state |= VXS_HELPER;
17361 +
17362 +       snprintf(id_buf, sizeof(id_buf), "%d", vxi->vx_id);
17363 +
17364 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17365 +       snprintf(uid_buf, sizeof(uid_buf), "VS_UID=%d",
17366 +               from_kuid(&init_user_ns, current_uid()));
17367 +       snprintf(pid_buf, sizeof(pid_buf), "VS_PID=%d", current->pid);
17368 +
17369 +       switch (cmd) {
17370 +       case LINUX_REBOOT_CMD_RESTART:
17371 +               argv[1] = "restart";
17372 +               break;
17373 +
17374 +       case LINUX_REBOOT_CMD_HALT:
17375 +               argv[1] = "halt";
17376 +               break;
17377 +
17378 +       case LINUX_REBOOT_CMD_POWER_OFF:
17379 +               argv[1] = "poweroff";
17380 +               break;
17381 +
17382 +       case LINUX_REBOOT_CMD_SW_SUSPEND:
17383 +               argv[1] = "swsusp";
17384 +               break;
17385 +
17386 +       case LINUX_REBOOT_CMD_OOM:
17387 +               argv[1] = "oom";
17388 +               break;
17389 +
17390 +       default:
17391 +               vxi->vx_state &= ~VXS_HELPER;
17392 +               return 0;
17393 +       }
17394 +
17395 +       ret = do_vshelper(vshelper_path, argv, envp, 0);
17396 +       vxi->vx_state &= ~VXS_HELPER;
17397 +       __wakeup_vx_info(vxi);
17398 +       return (ret) ? -EPERM : 0;
17399 +}
17400 +
17401 +
17402 +long vs_reboot(unsigned int cmd, void __user *arg)
17403 +{
17404 +       struct vx_info *vxi = current_vx_info();
17405 +       long ret = 0;
17406 +
17407 +       vxdprintk(VXD_CBIT(misc, 5),
17408 +               "vs_reboot(%p[#%d],%u)",
17409 +               vxi, vxi ? vxi->vx_id : 0, cmd);
17410 +
17411 +       ret = vs_reboot_helper(vxi, cmd, arg);
17412 +       if (ret)
17413 +               return ret;
17414 +
17415 +       vxi->reboot_cmd = cmd;
17416 +       if (vx_info_flags(vxi, VXF_REBOOT_KILL, 0)) {
17417 +               switch (cmd) {
17418 +               case LINUX_REBOOT_CMD_RESTART:
17419 +               case LINUX_REBOOT_CMD_HALT:
17420 +               case LINUX_REBOOT_CMD_POWER_OFF:
17421 +                       vx_info_kill(vxi, 0, SIGKILL);
17422 +                       vx_info_kill(vxi, 1, SIGKILL);
17423 +               default:
17424 +                       break;
17425 +               }
17426 +       }
17427 +       return 0;
17428 +}
17429 +
17430 +long vs_oom_action(unsigned int cmd)
17431 +{
17432 +       struct vx_info *vxi = current_vx_info();
17433 +       long ret = 0;
17434 +
17435 +       vxdprintk(VXD_CBIT(misc, 5),
17436 +               "vs_oom_action(%p[#%d],%u)",
17437 +               vxi, vxi ? vxi->vx_id : 0, cmd);
17438 +
17439 +       ret = vs_reboot_helper(vxi, cmd, NULL);
17440 +       if (ret)
17441 +               return ret;
17442 +
17443 +       vxi->reboot_cmd = cmd;
17444 +       if (vx_info_flags(vxi, VXF_REBOOT_KILL, 0)) {
17445 +               vx_info_kill(vxi, 0, SIGKILL);
17446 +               vx_info_kill(vxi, 1, SIGKILL);
17447 +       }
17448 +       return 0;
17449 +}
17450 +
17451 +/*
17452 + *      argv [0] = vshelper_path;
17453 + *      argv [1] = action: "startup", "shutdown"
17454 + *      argv [2] = context identifier
17455 + *
17456 + *      envp [*] = type-specific parameters
17457 + */
17458 +
17459 +long vs_state_change(struct vx_info *vxi, unsigned int cmd)
17460 +{
17461 +       char id_buf[8], cmd_buf[16];
17462 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17463 +       char *envp[] = {"HOME=/", "TERM=linux",
17464 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
17465 +
17466 +       if (!vx_info_flags(vxi, VXF_SC_HELPER, 0))
17467 +               return 0;
17468 +
17469 +       snprintf(id_buf, sizeof(id_buf), "%d", vxi->vx_id);
17470 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17471 +
17472 +       switch (cmd) {
17473 +       case VSC_STARTUP:
17474 +               argv[1] = "startup";
17475 +               break;
17476 +       case VSC_SHUTDOWN:
17477 +               argv[1] = "shutdown";
17478 +               break;
17479 +       default:
17480 +               return 0;
17481 +       }
17482 +
17483 +       return do_vshelper(vshelper_path, argv, envp, 1);
17484 +}
17485 +
17486 +
17487 +/*
17488 + *      argv [0] = vshelper_path;
17489 + *      argv [1] = action: "netup", "netdown"
17490 + *      argv [2] = context identifier
17491 + *
17492 + *      envp [*] = type-specific parameters
17493 + */
17494 +
17495 +long vs_net_change(struct nx_info *nxi, unsigned int cmd)
17496 +{
17497 +       char id_buf[8], cmd_buf[16];
17498 +       char *argv[] = {vshelper_path, NULL, id_buf, 0};
17499 +       char *envp[] = {"HOME=/", "TERM=linux",
17500 +                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
17501 +
17502 +       if (!nx_info_flags(nxi, NXF_SC_HELPER, 0))
17503 +               return 0;
17504 +
17505 +       snprintf(id_buf, sizeof(id_buf), "%d", nxi->nx_id);
17506 +       snprintf(cmd_buf, sizeof(cmd_buf), "VS_CMD=%08x", cmd);
17507 +
17508 +       switch (cmd) {
17509 +       case VSC_NETUP:
17510 +               argv[1] = "netup";
17511 +               break;
17512 +       case VSC_NETDOWN:
17513 +               argv[1] = "netdown";
17514 +               break;
17515 +       default:
17516 +               return 0;
17517 +       }
17518 +
17519 +       return do_vshelper(vshelper_path, argv, envp, 1);
17520 +}
17521 +
17522 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/history.c linux-4.9/kernel/vserver/history.c
17523 --- linux-4.9/kernel/vserver/history.c  1970-01-01 01:00:00.000000000 +0100
17524 +++ linux-4.9/kernel/vserver/history.c  2021-02-24 15:47:45.124410596 +0100
17525 @@ -0,0 +1,258 @@
17526 +/*
17527 + *  kernel/vserver/history.c
17528 + *
17529 + *  Virtual Context History Backtrace
17530 + *
17531 + *  Copyright (C) 2004-2007  Herbert P?tzl
17532 + *
17533 + *  V0.01  basic structure
17534 + *  V0.02  hash/unhash and trace
17535 + *  V0.03  preemption fixes
17536 + *
17537 + */
17538 +
17539 +#include <linux/module.h>
17540 +#include <asm/uaccess.h>
17541 +
17542 +#include <linux/vserver/context.h>
17543 +#include <linux/vserver/debug.h>
17544 +#include <linux/vserver/debug_cmd.h>
17545 +#include <linux/vserver/history.h>
17546 +
17547 +
17548 +#ifdef CONFIG_VSERVER_HISTORY
17549 +#define VXH_SIZE       CONFIG_VSERVER_HISTORY_SIZE
17550 +#else
17551 +#define VXH_SIZE       64
17552 +#endif
17553 +
17554 +struct _vx_history {
17555 +       unsigned int counter;
17556 +
17557 +       struct _vx_hist_entry entry[VXH_SIZE + 1];
17558 +};
17559 +
17560 +
17561 +DEFINE_PER_CPU(struct _vx_history, vx_history_buffer);
17562 +
17563 +unsigned volatile int vxh_active = 1;
17564 +
17565 +static atomic_t sequence = ATOMIC_INIT(0);
17566 +
17567 +
17568 +/*     vxh_advance()
17569 +
17570 +       * requires disabled preemption                          */
17571 +
17572 +struct _vx_hist_entry *vxh_advance(void *loc)
17573 +{
17574 +       unsigned int cpu = smp_processor_id();
17575 +       struct _vx_history *hist = &per_cpu(vx_history_buffer, cpu);
17576 +       struct _vx_hist_entry *entry;
17577 +       unsigned int index;
17578 +
17579 +       index = vxh_active ? (hist->counter++ % VXH_SIZE) : VXH_SIZE;
17580 +       entry = &hist->entry[index];
17581 +
17582 +       entry->seq = atomic_inc_return(&sequence);
17583 +       entry->loc = loc;
17584 +       return entry;
17585 +}
17586 +
17587 +EXPORT_SYMBOL_GPL(vxh_advance);
17588 +
17589 +
17590 +#define VXH_LOC_FMTS   "(#%04x,*%d):%p"
17591 +
17592 +#define VXH_LOC_ARGS(e)        (e)->seq, cpu, (e)->loc
17593 +
17594 +
17595 +#define VXH_VXI_FMTS   "%p[#%d,%d.%d]"
17596 +
17597 +#define VXH_VXI_ARGS(e)        (e)->vxi.ptr,                           \
17598 +                       (e)->vxi.ptr ? (e)->vxi.xid : 0,        \
17599 +                       (e)->vxi.ptr ? (e)->vxi.usecnt : 0,     \
17600 +                       (e)->vxi.ptr ? (e)->vxi.tasks : 0
17601 +
17602 +void   vxh_dump_entry(struct _vx_hist_entry *e, unsigned cpu)
17603 +{
17604 +       switch (e->type) {
17605 +       case VXH_THROW_OOPS:
17606 +               printk( VXH_LOC_FMTS " oops \n", VXH_LOC_ARGS(e));
17607 +               break;
17608 +
17609 +       case VXH_GET_VX_INFO:
17610 +       case VXH_PUT_VX_INFO:
17611 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS "\n",
17612 +                       VXH_LOC_ARGS(e),
17613 +                       (e->type == VXH_GET_VX_INFO) ? "get" : "put",
17614 +                       VXH_VXI_ARGS(e));
17615 +               break;
17616 +
17617 +       case VXH_INIT_VX_INFO:
17618 +       case VXH_SET_VX_INFO:
17619 +       case VXH_CLR_VX_INFO:
17620 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS " @%p\n",
17621 +                       VXH_LOC_ARGS(e),
17622 +                       (e->type == VXH_INIT_VX_INFO) ? "init" :
17623 +                       ((e->type == VXH_SET_VX_INFO) ? "set" : "clr"),
17624 +                       VXH_VXI_ARGS(e), e->sc.data);
17625 +               break;
17626 +
17627 +       case VXH_CLAIM_VX_INFO:
17628 +       case VXH_RELEASE_VX_INFO:
17629 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS " @%p\n",
17630 +                       VXH_LOC_ARGS(e),
17631 +                       (e->type == VXH_CLAIM_VX_INFO) ? "claim" : "release",
17632 +                       VXH_VXI_ARGS(e), e->sc.data);
17633 +               break;
17634 +
17635 +       case VXH_ALLOC_VX_INFO:
17636 +       case VXH_DEALLOC_VX_INFO:
17637 +               printk( VXH_LOC_FMTS " %s_vx_info " VXH_VXI_FMTS "\n",
17638 +                       VXH_LOC_ARGS(e),
17639 +                       (e->type == VXH_ALLOC_VX_INFO) ? "alloc" : "dealloc",
17640 +                       VXH_VXI_ARGS(e));
17641 +               break;
17642 +
17643 +       case VXH_HASH_VX_INFO:
17644 +       case VXH_UNHASH_VX_INFO:
17645 +               printk( VXH_LOC_FMTS " __%s_vx_info " VXH_VXI_FMTS "\n",
17646 +                       VXH_LOC_ARGS(e),
17647 +                       (e->type == VXH_HASH_VX_INFO) ? "hash" : "unhash",
17648 +                       VXH_VXI_ARGS(e));
17649 +               break;
17650 +
17651 +       case VXH_LOC_VX_INFO:
17652 +       case VXH_LOOKUP_VX_INFO:
17653 +       case VXH_CREATE_VX_INFO:
17654 +               printk( VXH_LOC_FMTS " __%s_vx_info [#%d] -> " VXH_VXI_FMTS "\n",
17655 +                       VXH_LOC_ARGS(e),
17656 +                       (e->type == VXH_CREATE_VX_INFO) ? "create" :
17657 +                       ((e->type == VXH_LOC_VX_INFO) ? "loc" : "lookup"),
17658 +                       e->ll.arg, VXH_VXI_ARGS(e));
17659 +               break;
17660 +       }
17661 +}
17662 +
17663 +static void __vxh_dump_history(void)
17664 +{
17665 +       unsigned int i, cpu;
17666 +
17667 +       printk("History:\tSEQ: %8x\tNR_CPUS: %d\n",
17668 +               atomic_read(&sequence), NR_CPUS);
17669 +
17670 +       for (i = 0; i < VXH_SIZE; i++) {
17671 +               for_each_online_cpu(cpu) {
17672 +                       struct _vx_history *hist =
17673 +                               &per_cpu(vx_history_buffer, cpu);
17674 +                       unsigned int index = (hist->counter - i) % VXH_SIZE;
17675 +                       struct _vx_hist_entry *entry = &hist->entry[index];
17676 +
17677 +                       vxh_dump_entry(entry, cpu);
17678 +               }
17679 +       }
17680 +}
17681 +
17682 +void   vxh_dump_history(void)
17683 +{
17684 +       vxh_active = 0;
17685 +#ifdef CONFIG_SMP
17686 +       local_irq_enable();
17687 +       smp_send_stop();
17688 +       local_irq_disable();
17689 +#endif
17690 +       __vxh_dump_history();
17691 +}
17692 +
17693 +
17694 +/* vserver syscall commands below here */
17695 +
17696 +
17697 +int vc_dump_history(uint32_t id)
17698 +{
17699 +       vxh_active = 0;
17700 +       __vxh_dump_history();
17701 +       vxh_active = 1;
17702 +
17703 +       return 0;
17704 +}
17705 +
17706 +
17707 +int do_read_history(struct __user _vx_hist_entry *data,
17708 +       int cpu, uint32_t *index, uint32_t *count)
17709 +{
17710 +       int pos, ret = 0;
17711 +       struct _vx_history *hist = &per_cpu(vx_history_buffer, cpu);
17712 +       int end = hist->counter;
17713 +       int start = end - VXH_SIZE + 2;
17714 +       int idx = *index;
17715 +
17716 +       /* special case: get current pos */
17717 +       if (!*count) {
17718 +               *index = end;
17719 +               return 0;
17720 +       }
17721 +
17722 +       /* have we lost some data? */
17723 +       if (idx < start)
17724 +               idx = start;
17725 +
17726 +       for (pos = 0; (pos < *count) && (idx < end); pos++, idx++) {
17727 +               struct _vx_hist_entry *entry =
17728 +                       &hist->entry[idx % VXH_SIZE];
17729 +
17730 +               /* send entry to userspace */
17731 +               ret = copy_to_user(&data[pos], entry, sizeof(*entry));
17732 +               if (ret)
17733 +                       break;
17734 +       }
17735 +       /* save new index and count */
17736 +       *index = idx;
17737 +       *count = pos;
17738 +       return ret ? ret : (*index < end);
17739 +}
17740 +
17741 +int vc_read_history(uint32_t id, void __user *data)
17742 +{
17743 +       struct vcmd_read_history_v0 vc_data;
17744 +       int ret;
17745 +
17746 +       if (id >= NR_CPUS)
17747 +               return -EINVAL;
17748 +
17749 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17750 +               return -EFAULT;
17751 +
17752 +       ret = do_read_history((struct __user _vx_hist_entry *)vc_data.data,
17753 +               id, &vc_data.index, &vc_data.count);
17754 +
17755 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17756 +               return -EFAULT;
17757 +       return ret;
17758 +}
17759 +
17760 +#ifdef CONFIG_COMPAT
17761 +
17762 +int vc_read_history_x32(uint32_t id, void __user *data)
17763 +{
17764 +       struct vcmd_read_history_v0_x32 vc_data;
17765 +       int ret;
17766 +
17767 +       if (id >= NR_CPUS)
17768 +               return -EINVAL;
17769 +
17770 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
17771 +               return -EFAULT;
17772 +
17773 +       ret = do_read_history((struct __user _vx_hist_entry *)
17774 +               compat_ptr(vc_data.data_ptr),
17775 +               id, &vc_data.index, &vc_data.count);
17776 +
17777 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
17778 +               return -EFAULT;
17779 +       return ret;
17780 +}
17781 +
17782 +#endif /* CONFIG_COMPAT */
17783 +
17784 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/inet.c linux-4.9/kernel/vserver/inet.c
17785 --- linux-4.9/kernel/vserver/inet.c     1970-01-01 01:00:00.000000000 +0100
17786 +++ linux-4.9/kernel/vserver/inet.c     2021-02-24 15:47:45.124410596 +0100
17787 @@ -0,0 +1,236 @@
17788 +
17789 +#include <linux/in.h>
17790 +#include <linux/inetdevice.h>
17791 +#include <linux/export.h>
17792 +#include <linux/vs_inet.h>
17793 +#include <linux/vs_inet6.h>
17794 +#include <linux/vserver/debug.h>
17795 +#include <net/route.h>
17796 +#include <net/addrconf.h>
17797 +
17798 +
17799 +int nx_v4_addr_conflict(struct nx_info *nxi1, struct nx_info *nxi2)
17800 +{
17801 +       int ret = 0;
17802 +
17803 +       if (!nxi1 || !nxi2 || nxi1 == nxi2)
17804 +               ret = 1;
17805 +       else {
17806 +               struct nx_addr_v4 *ptr;
17807 +               unsigned long irqflags;
17808 +
17809 +               spin_lock_irqsave(&nxi1->addr_lock, irqflags);
17810 +               for (ptr = &nxi1->v4; ptr; ptr = ptr->next) {
17811 +                       if (v4_nx_addr_in_nx_info(nxi2, ptr, -1)) {
17812 +                               ret = 1;
17813 +                               break;
17814 +                       }
17815 +               }
17816 +               spin_unlock_irqrestore(&nxi1->addr_lock, irqflags);
17817 +       }
17818 +
17819 +       vxdprintk(VXD_CBIT(net, 2),
17820 +               "nx_v4_addr_conflict(%p,%p): %d",
17821 +               nxi1, nxi2, ret);
17822 +
17823 +       return ret;
17824 +}
17825 +
17826 +
17827 +#ifdef CONFIG_IPV6
17828 +
17829 +int nx_v6_addr_conflict(struct nx_info *nxi1, struct nx_info *nxi2)
17830 +{
17831 +       int ret = 0;
17832 +
17833 +       if (!nxi1 || !nxi2 || nxi1 == nxi2)
17834 +               ret = 1;
17835 +       else {
17836 +               struct nx_addr_v6 *ptr;
17837 +               unsigned long irqflags;
17838 +
17839 +               spin_lock_irqsave(&nxi1->addr_lock, irqflags);
17840 +               for (ptr = &nxi1->v6; ptr; ptr = ptr->next) {
17841 +                       if (v6_nx_addr_in_nx_info(nxi2, ptr, -1)) {
17842 +                               ret = 1;
17843 +                               break;
17844 +                       }
17845 +               }
17846 +               spin_unlock_irqrestore(&nxi1->addr_lock, irqflags);
17847 +       }
17848 +
17849 +       vxdprintk(VXD_CBIT(net, 2),
17850 +               "nx_v6_addr_conflict(%p,%p): %d",
17851 +               nxi1, nxi2, ret);
17852 +
17853 +       return ret;
17854 +}
17855 +
17856 +#endif
17857 +
17858 +int v4_dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17859 +{
17860 +       struct in_device *in_dev;
17861 +       struct in_ifaddr **ifap;
17862 +       struct in_ifaddr *ifa;
17863 +       int ret = 0;
17864 +
17865 +       if (!dev)
17866 +               goto out;
17867 +       in_dev = in_dev_get(dev);
17868 +       if (!in_dev)
17869 +               goto out;
17870 +
17871 +       for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
17872 +               ifap = &ifa->ifa_next) {
17873 +               if (v4_addr_in_nx_info(nxi, ifa->ifa_local, NXA_MASK_SHOW)) {
17874 +                       ret = 1;
17875 +                       break;
17876 +               }
17877 +       }
17878 +       in_dev_put(in_dev);
17879 +out:
17880 +       return ret;
17881 +}
17882 +
17883 +
17884 +#ifdef CONFIG_IPV6
17885 +
17886 +int v6_dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17887 +{
17888 +       struct inet6_dev *in_dev;
17889 +       struct inet6_ifaddr *ifa;
17890 +       int ret = 0;
17891 +
17892 +       if (!dev)
17893 +               goto out;
17894 +       in_dev = in6_dev_get(dev);
17895 +       if (!in_dev)
17896 +               goto out;
17897 +
17898 +       // for (ifap = &in_dev->addr_list; (ifa = *ifap) != NULL;
17899 +       list_for_each_entry(ifa, &in_dev->addr_list, if_list) {
17900 +               if (v6_addr_in_nx_info(nxi, &ifa->addr, -1)) {
17901 +                       ret = 1;
17902 +                       break;
17903 +               }
17904 +       }
17905 +       in6_dev_put(in_dev);
17906 +out:
17907 +       return ret;
17908 +}
17909 +
17910 +#endif
17911 +
17912 +int dev_in_nx_info(struct net_device *dev, struct nx_info *nxi)
17913 +{
17914 +       int ret = 1;
17915 +
17916 +       if (!nxi)
17917 +               goto out;
17918 +       if (nxi->v4.type && v4_dev_in_nx_info(dev, nxi))
17919 +               goto out;
17920 +#ifdef CONFIG_IPV6
17921 +       ret = 2;
17922 +       if (nxi->v6.type && v6_dev_in_nx_info(dev, nxi))
17923 +               goto out;
17924 +#endif
17925 +       ret = 0;
17926 +out:
17927 +       vxdprintk(VXD_CBIT(net, 3),
17928 +               "dev_in_nx_info(%p,%p[#%d]) = %d",
17929 +               dev, nxi, nxi ? nxi->nx_id : 0, ret);
17930 +       return ret;
17931 +}
17932 +
17933 +struct rtable *ip_v4_find_src(struct net *net, struct nx_info *nxi,
17934 +       struct flowi4 *fl4)
17935 +{
17936 +       struct rtable *rt;
17937 +
17938 +       if (!nxi)
17939 +               return NULL;
17940 +
17941 +       /* FIXME: handle lback only case */
17942 +       if (!NX_IPV4(nxi))
17943 +               return ERR_PTR(-EPERM);
17944 +
17945 +       vxdprintk(VXD_CBIT(net, 4),
17946 +               "ip_v4_find_src(%p[#%u]) " NIPQUAD_FMT " -> " NIPQUAD_FMT,
17947 +               nxi, nxi ? nxi->nx_id : 0,
17948 +               NIPQUAD(fl4->saddr), NIPQUAD(fl4->daddr));
17949 +
17950 +       /* single IP is unconditional */
17951 +       if (nx_info_flags(nxi, NXF_SINGLE_IP, 0) &&
17952 +               (fl4->saddr == INADDR_ANY))
17953 +               fl4->saddr = nxi->v4.ip[0].s_addr;
17954 +
17955 +       if (fl4->saddr == INADDR_ANY) {
17956 +               struct nx_addr_v4 *ptr;
17957 +               __be32 found = 0;
17958 +
17959 +               rt = __ip_route_output_key(net, fl4);
17960 +               if (!IS_ERR(rt)) {
17961 +                       found = fl4->saddr;
17962 +                       ip_rt_put(rt);
17963 +                       vxdprintk(VXD_CBIT(net, 4),
17964 +                               "ip_v4_find_src(%p[#%u]) rok[%u]: " NIPQUAD_FMT,
17965 +                               nxi, nxi ? nxi->nx_id : 0, fl4->flowi4_oif, NIPQUAD(found));
17966 +                       if (v4_addr_in_nx_info(nxi, found, NXA_MASK_BIND))
17967 +                               goto found;
17968 +               }
17969 +
17970 +               WARN_ON_ONCE(in_irq());
17971 +               spin_lock_bh(&nxi->addr_lock);
17972 +               for (ptr = &nxi->v4; ptr; ptr = ptr->next) {
17973 +                       __be32 primary = ptr->ip[0].s_addr;
17974 +                       __be32 mask = ptr->mask.s_addr;
17975 +                       __be32 neta = primary & mask;
17976 +
17977 +                       vxdprintk(VXD_CBIT(net, 4), "ip_v4_find_src(%p[#%u]) chk: "
17978 +                               NIPQUAD_FMT "/" NIPQUAD_FMT "/" NIPQUAD_FMT,
17979 +                               nxi, nxi ? nxi->nx_id : 0, NIPQUAD(primary),
17980 +                               NIPQUAD(mask), NIPQUAD(neta));
17981 +                       if ((found & mask) != neta)
17982 +                               continue;
17983 +
17984 +                       fl4->saddr = primary;
17985 +                       rt = __ip_route_output_key(net, fl4);
17986 +                       vxdprintk(VXD_CBIT(net, 4),
17987 +                               "ip_v4_find_src(%p[#%u]) rok[%u]: " NIPQUAD_FMT,
17988 +                               nxi, nxi ? nxi->nx_id : 0, fl4->flowi4_oif, NIPQUAD(primary));
17989 +                       if (!IS_ERR(rt)) {
17990 +                               found = fl4->saddr;
17991 +                               ip_rt_put(rt);
17992 +                               if (found == primary)
17993 +                                       goto found_unlock;
17994 +                       }
17995 +               }
17996 +               /* still no source ip? */
17997 +               found = ipv4_is_loopback(fl4->daddr)
17998 +                       ? IPI_LOOPBACK : nxi->v4.ip[0].s_addr;
17999 +       found_unlock:
18000 +               spin_unlock_bh(&nxi->addr_lock);
18001 +       found:
18002 +               /* assign src ip to flow */
18003 +               fl4->saddr = found;
18004 +
18005 +       } else {
18006 +               if (!v4_addr_in_nx_info(nxi, fl4->saddr, NXA_MASK_BIND))
18007 +                       return ERR_PTR(-EPERM);
18008 +       }
18009 +
18010 +       if (nx_info_flags(nxi, NXF_LBACK_REMAP, 0)) {
18011 +               if (ipv4_is_loopback(fl4->daddr))
18012 +                       fl4->daddr = nxi->v4_lback.s_addr;
18013 +               if (ipv4_is_loopback(fl4->saddr))
18014 +                       fl4->saddr = nxi->v4_lback.s_addr;
18015 +       } else if (ipv4_is_loopback(fl4->daddr) &&
18016 +               !nx_info_flags(nxi, NXF_LBACK_ALLOW, 0))
18017 +               return ERR_PTR(-EPERM);
18018 +
18019 +       return NULL;
18020 +}
18021 +
18022 +EXPORT_SYMBOL_GPL(ip_v4_find_src);
18023 +
18024 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/init.c linux-4.9/kernel/vserver/init.c
18025 --- linux-4.9/kernel/vserver/init.c     1970-01-01 01:00:00.000000000 +0100
18026 +++ linux-4.9/kernel/vserver/init.c     2021-02-24 15:47:45.124410596 +0100
18027 @@ -0,0 +1,46 @@
18028 +/*
18029 + *  linux/kernel/init.c
18030 + *
18031 + *  Virtual Server Init
18032 + *
18033 + *  Copyright (C) 2004-2007  Herbert P?tzl
18034 + *
18035 + *  V0.01  basic structure
18036 + *
18037 + */
18038 +
18039 +#include <linux/init.h>
18040 +#include <linux/module.h>
18041 +
18042 +int    vserver_register_sysctl(void);
18043 +void   vserver_unregister_sysctl(void);
18044 +
18045 +
18046 +static int __init init_vserver(void)
18047 +{
18048 +       int ret = 0;
18049 +
18050 +#ifdef CONFIG_VSERVER_DEBUG
18051 +       vserver_register_sysctl();
18052 +#endif
18053 +       return ret;
18054 +}
18055 +
18056 +
18057 +static void __exit exit_vserver(void)
18058 +{
18059 +
18060 +#ifdef CONFIG_VSERVER_DEBUG
18061 +       vserver_unregister_sysctl();
18062 +#endif
18063 +       return;
18064 +}
18065 +
18066 +/* FIXME: GFP_ZONETYPES gone
18067 +long vx_slab[GFP_ZONETYPES]; */
18068 +long vx_area;
18069 +
18070 +
18071 +module_init(init_vserver);
18072 +module_exit(exit_vserver);
18073 +
18074 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/inode.c linux-4.9/kernel/vserver/inode.c
18075 --- linux-4.9/kernel/vserver/inode.c    1970-01-01 01:00:00.000000000 +0100
18076 +++ linux-4.9/kernel/vserver/inode.c    2021-02-24 15:47:45.124410596 +0100
18077 @@ -0,0 +1,440 @@
18078 +/*
18079 + *  linux/kernel/vserver/inode.c
18080 + *
18081 + *  Virtual Server: File System Support
18082 + *
18083 + *  Copyright (C) 2004-2007  Herbert P?tzl
18084 + *
18085 + *  V0.01  separated from vcontext V0.05
18086 + *  V0.02  moved to tag (instead of xid)
18087 + *
18088 + */
18089 +
18090 +#include <linux/tty.h>
18091 +#include <linux/proc_fs.h>
18092 +#include <linux/devpts_fs.h>
18093 +#include <linux/fs.h>
18094 +#include <linux/file.h>
18095 +#include <linux/mount.h>
18096 +#include <linux/parser.h>
18097 +#include <linux/namei.h>
18098 +#include <linux/magic.h>
18099 +#include <linux/slab.h>
18100 +#include <linux/vserver/inode.h>
18101 +#include <linux/vserver/inode_cmd.h>
18102 +#include <linux/vs_base.h>
18103 +#include <linux/vs_tag.h>
18104 +
18105 +#include <asm/uaccess.h>
18106 +#include <../../fs/proc/internal.h>
18107 +
18108 +
18109 +static int __vc_get_iattr(struct inode *in, uint32_t *tag, uint32_t *flags, uint32_t *mask)
18110 +{
18111 +       struct proc_dir_entry *entry;
18112 +
18113 +       if (!in || !in->i_sb)
18114 +               return -ESRCH;
18115 +
18116 +       *flags = IATTR_TAG
18117 +               | (IS_IMMUTABLE(in) ? IATTR_IMMUTABLE : 0)
18118 +               | (IS_IXUNLINK(in) ? IATTR_IXUNLINK : 0)
18119 +               | (IS_BARRIER(in) ? IATTR_BARRIER : 0)
18120 +               | (IS_COW(in) ? IATTR_COW : 0);
18121 +       *mask = IATTR_IXUNLINK | IATTR_IMMUTABLE | IATTR_COW;
18122 +
18123 +       if (S_ISDIR(in->i_mode))
18124 +               *mask |= IATTR_BARRIER;
18125 +
18126 +       if (IS_TAGGED(in)) {
18127 +               *tag = i_tag_read(in);
18128 +               *mask |= IATTR_TAG;
18129 +       }
18130 +
18131 +       switch (in->i_sb->s_magic) {
18132 +       case PROC_SUPER_MAGIC:
18133 +               entry = PROC_I(in)->pde;
18134 +
18135 +               /* check for specific inodes? */
18136 +               if (entry)
18137 +                       *mask |= IATTR_FLAGS;
18138 +               if (entry)
18139 +                       *flags |= (entry->vx_flags & IATTR_FLAGS);
18140 +               else
18141 +                       *flags |= (PROC_I(in)->vx_flags & IATTR_FLAGS);
18142 +               break;
18143 +
18144 +       case DEVPTS_SUPER_MAGIC:
18145 +               *tag = i_tag_read(in);
18146 +               *mask |= IATTR_TAG;
18147 +               break;
18148 +
18149 +       default:
18150 +               break;
18151 +       }
18152 +       return 0;
18153 +}
18154 +
18155 +int vc_get_iattr(void __user *data)
18156 +{
18157 +       struct path path;
18158 +       struct vcmd_ctx_iattr_v1 vc_data = { .tag = -1 };
18159 +       int ret;
18160 +
18161 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18162 +               return -EFAULT;
18163 +
18164 +       ret = user_lpath(vc_data.name, &path);
18165 +       if (!ret) {
18166 +               ret = __vc_get_iattr(path.dentry->d_inode,
18167 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18168 +               path_put(&path);
18169 +       }
18170 +       if (ret)
18171 +               return ret;
18172 +
18173 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18174 +               ret = -EFAULT;
18175 +       return ret;
18176 +}
18177 +
18178 +#ifdef CONFIG_COMPAT
18179 +
18180 +int vc_get_iattr_x32(void __user *data)
18181 +{
18182 +       struct path path;
18183 +       struct vcmd_ctx_iattr_v1_x32 vc_data = { .tag = -1 };
18184 +       int ret;
18185 +
18186 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18187 +               return -EFAULT;
18188 +
18189 +       ret = user_lpath(compat_ptr(vc_data.name_ptr), &path);
18190 +       if (!ret) {
18191 +               ret = __vc_get_iattr(path.dentry->d_inode,
18192 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18193 +               path_put(&path);
18194 +       }
18195 +       if (ret)
18196 +               return ret;
18197 +
18198 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18199 +               ret = -EFAULT;
18200 +       return ret;
18201 +}
18202 +
18203 +#endif /* CONFIG_COMPAT */
18204 +
18205 +
18206 +int vc_fget_iattr(uint32_t fd, void __user *data)
18207 +{
18208 +       struct file *filp;
18209 +       struct vcmd_ctx_fiattr_v0 vc_data = { .tag = -1 };
18210 +       int ret;
18211 +
18212 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18213 +               return -EFAULT;
18214 +
18215 +       filp = fget(fd);
18216 +       if (!filp || !filp->f_path.dentry || !filp->f_path.dentry->d_inode)
18217 +               return -EBADF;
18218 +
18219 +       ret = __vc_get_iattr(filp->f_path.dentry->d_inode,
18220 +               &vc_data.tag, &vc_data.flags, &vc_data.mask);
18221 +
18222 +       fput(filp);
18223 +
18224 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18225 +               ret = -EFAULT;
18226 +       return ret;
18227 +}
18228 +
18229 +
18230 +static int __vc_set_iattr(struct dentry *de, uint32_t *tag, uint32_t *flags, uint32_t *mask)
18231 +{
18232 +       struct inode *in = de->d_inode;
18233 +       int error = 0, is_proc = 0, has_tag = 0;
18234 +       struct iattr attr = { 0 };
18235 +
18236 +       if (!in || !in->i_sb)
18237 +               return -ESRCH;
18238 +
18239 +       is_proc = (in->i_sb->s_magic == PROC_SUPER_MAGIC);
18240 +       if ((*mask & IATTR_FLAGS) && !is_proc)
18241 +               return -EINVAL;
18242 +
18243 +       has_tag = IS_TAGGED(in) ||
18244 +               (in->i_sb->s_magic == DEVPTS_SUPER_MAGIC);
18245 +       if ((*mask & IATTR_TAG) && !has_tag)
18246 +               return -EINVAL;
18247 +
18248 +       inode_lock(in);
18249 +       if (*mask & IATTR_TAG) {
18250 +               attr.ia_tag = make_ktag(&init_user_ns, *tag);
18251 +               attr.ia_valid |= ATTR_TAG;
18252 +       }
18253 +
18254 +       if (*mask & IATTR_FLAGS) {
18255 +               struct proc_dir_entry *entry = PROC_I(in)->pde;
18256 +               unsigned int iflags = PROC_I(in)->vx_flags;
18257 +
18258 +               iflags = (iflags & ~(*mask & IATTR_FLAGS))
18259 +                       | (*flags & IATTR_FLAGS);
18260 +               PROC_I(in)->vx_flags = iflags;
18261 +               if (entry)
18262 +                       entry->vx_flags = iflags;
18263 +       }
18264 +
18265 +       if (*mask & (IATTR_IMMUTABLE | IATTR_IXUNLINK |
18266 +               IATTR_BARRIER | IATTR_COW)) {
18267 +               int iflags = in->i_flags;
18268 +               int vflags = in->i_vflags;
18269 +
18270 +               if (*mask & IATTR_IMMUTABLE) {
18271 +                       if (*flags & IATTR_IMMUTABLE)
18272 +                               iflags |= S_IMMUTABLE;
18273 +                       else
18274 +                               iflags &= ~S_IMMUTABLE;
18275 +               }
18276 +               if (*mask & IATTR_IXUNLINK) {
18277 +                       if (*flags & IATTR_IXUNLINK)
18278 +                               iflags |= S_IXUNLINK;
18279 +                       else
18280 +                               iflags &= ~S_IXUNLINK;
18281 +               }
18282 +               if (S_ISDIR(in->i_mode) && (*mask & IATTR_BARRIER)) {
18283 +                       if (*flags & IATTR_BARRIER)
18284 +                               vflags |= V_BARRIER;
18285 +                       else
18286 +                               vflags &= ~V_BARRIER;
18287 +               }
18288 +               if (S_ISREG(in->i_mode) && (*mask & IATTR_COW)) {
18289 +                       if (*flags & IATTR_COW)
18290 +                               vflags |= V_COW;
18291 +                       else
18292 +                               vflags &= ~V_COW;
18293 +               }
18294 +               if (in->i_op && in->i_op->sync_flags) {
18295 +                       error = in->i_op->sync_flags(in, iflags, vflags);
18296 +                       if (error)
18297 +                               goto out;
18298 +               }
18299 +       }
18300 +
18301 +       if (attr.ia_valid) {
18302 +               if (in->i_op && in->i_op->setattr)
18303 +                       error = in->i_op->setattr(de, &attr);
18304 +               else {
18305 +                       error = setattr_prepare(de, &attr);
18306 +                       if (!error) {
18307 +                               setattr_copy(in, &attr);
18308 +                               mark_inode_dirty(in);
18309 +                       }
18310 +               }
18311 +       }
18312 +
18313 +out:
18314 +       inode_unlock(in);
18315 +       return error;
18316 +}
18317 +
18318 +int vc_set_iattr(void __user *data)
18319 +{
18320 +       struct path path;
18321 +       struct vcmd_ctx_iattr_v1 vc_data;
18322 +       int ret;
18323 +
18324 +       if (!capable(CAP_LINUX_IMMUTABLE))
18325 +               return -EPERM;
18326 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18327 +               return -EFAULT;
18328 +
18329 +       ret = user_lpath(vc_data.name, &path);
18330 +       if (!ret) {
18331 +               ret = __vc_set_iattr(path.dentry,
18332 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18333 +               path_put(&path);
18334 +       }
18335 +
18336 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18337 +               ret = -EFAULT;
18338 +       return ret;
18339 +}
18340 +
18341 +#ifdef CONFIG_COMPAT
18342 +
18343 +int vc_set_iattr_x32(void __user *data)
18344 +{
18345 +       struct path path;
18346 +       struct vcmd_ctx_iattr_v1_x32 vc_data;
18347 +       int ret;
18348 +
18349 +       if (!capable(CAP_LINUX_IMMUTABLE))
18350 +               return -EPERM;
18351 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18352 +               return -EFAULT;
18353 +
18354 +       ret = user_lpath(compat_ptr(vc_data.name_ptr), &path);
18355 +       if (!ret) {
18356 +               ret = __vc_set_iattr(path.dentry,
18357 +                       &vc_data.tag, &vc_data.flags, &vc_data.mask);
18358 +               path_put(&path);
18359 +       }
18360 +
18361 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18362 +               ret = -EFAULT;
18363 +       return ret;
18364 +}
18365 +
18366 +#endif /* CONFIG_COMPAT */
18367 +
18368 +int vc_fset_iattr(uint32_t fd, void __user *data)
18369 +{
18370 +       struct file *filp;
18371 +       struct vcmd_ctx_fiattr_v0 vc_data;
18372 +       int ret;
18373 +
18374 +       if (!capable(CAP_LINUX_IMMUTABLE))
18375 +               return -EPERM;
18376 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18377 +               return -EFAULT;
18378 +
18379 +       filp = fget(fd);
18380 +       if (!filp || !filp->f_path.dentry || !filp->f_path.dentry->d_inode)
18381 +               return -EBADF;
18382 +
18383 +       ret = __vc_set_iattr(filp->f_path.dentry, &vc_data.tag,
18384 +               &vc_data.flags, &vc_data.mask);
18385 +
18386 +       fput(filp);
18387 +
18388 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18389 +               return -EFAULT;
18390 +       return ret;
18391 +}
18392 +
18393 +
18394 +enum { Opt_notagcheck, Opt_tag, Opt_notag, Opt_tagid, Opt_err };
18395 +
18396 +static match_table_t tokens = {
18397 +       {Opt_notagcheck, "notagcheck"},
18398 +#ifdef CONFIG_PROPAGATE
18399 +       {Opt_notag, "notag"},
18400 +       {Opt_tag, "tag"},
18401 +       {Opt_tagid, "tagid=%u"},
18402 +#endif
18403 +       {Opt_err, NULL}
18404 +};
18405 +
18406 +
18407 +static void __dx_parse_remove(char *string, char *opt)
18408 +{
18409 +       char *p = strstr(string, opt);
18410 +       char *q = p;
18411 +
18412 +       if (p) {
18413 +               while (*q != '\0' && *q != ',')
18414 +                       q++;
18415 +               while (*q)
18416 +                       *p++ = *q++;
18417 +               while (*p)
18418 +                       *p++ = '\0';
18419 +       }
18420 +}
18421 +
18422 +int dx_parse_tag(char *string, vtag_t *tag, int remove, int *mnt_flags,
18423 +                unsigned long *flags)
18424 +{
18425 +       int set = 0;
18426 +       substring_t args[MAX_OPT_ARGS];
18427 +       int token;
18428 +       char *s, *p, *opts;
18429 +#if defined(CONFIG_PROPAGATE) || defined(CONFIG_VSERVER_DEBUG)
18430 +       int option = 0;
18431 +#endif
18432 +
18433 +       if (!string)
18434 +               return 0;
18435 +       s = kstrdup(string, GFP_KERNEL | GFP_ATOMIC);
18436 +       if (!s)
18437 +               return 0;
18438 +
18439 +       opts = s;
18440 +       while ((p = strsep(&opts, ",")) != NULL) {
18441 +               token = match_token(p, tokens, args);
18442 +
18443 +               switch (token) {
18444 +#ifdef CONFIG_PROPAGATE
18445 +               case Opt_tag:
18446 +                       if (tag)
18447 +                               *tag = 0;
18448 +                       if (remove)
18449 +                               __dx_parse_remove(s, "tag");
18450 +                       *mnt_flags |= MNT_TAGID;
18451 +                       set |= MNT_TAGID;
18452 +                       break;
18453 +               case Opt_notag:
18454 +                       if (remove)
18455 +                               __dx_parse_remove(s, "notag");
18456 +                       *mnt_flags |= MNT_NOTAG;
18457 +                       set |= MNT_NOTAG;
18458 +                       break;
18459 +               case Opt_tagid:
18460 +                       if (tag && !match_int(args, &option))
18461 +                               *tag = option;
18462 +                       if (remove)
18463 +                               __dx_parse_remove(s, "tagid");
18464 +                       *mnt_flags |= MNT_TAGID;
18465 +                       set |= MNT_TAGID;
18466 +                       break;
18467 +#endif /* CONFIG_PROPAGATE */
18468 +               case Opt_notagcheck:
18469 +                       if (remove)
18470 +                               __dx_parse_remove(s, "notagcheck");
18471 +                       *flags |= MS_NOTAGCHECK;
18472 +                       set |= MS_NOTAGCHECK;
18473 +                       break;
18474 +               }
18475 +               vxdprintk(VXD_CBIT(tag, 7),
18476 +                       "dx_parse_tag(" VS_Q("%s") "): %d:#%d",
18477 +                       p, token, option);
18478 +       }
18479 +       if (set)
18480 +               strcpy(string, s);
18481 +       kfree(s);
18482 +       return set;
18483 +}
18484 +
18485 +#ifdef CONFIG_PROPAGATE
18486 +
18487 +void __dx_propagate_tag(struct nameidata *nd, struct inode *inode)
18488 +{
18489 +       vtag_t new_tag = 0;
18490 +       struct vfsmount *mnt;
18491 +       int propagate;
18492 +
18493 +       if (!nd)
18494 +               return;
18495 +       mnt = nd->path.mnt;
18496 +       if (!mnt)
18497 +               return;
18498 +
18499 +       propagate = (mnt->mnt_flags & MNT_TAGID);
18500 +       if (propagate)
18501 +               new_tag = mnt->mnt_tag;
18502 +
18503 +       vxdprintk(VXD_CBIT(tag, 7),
18504 +               "dx_propagate_tag(%p[#%lu.%d]): %d,%d",
18505 +               inode, inode->i_ino, inode->i_tag,
18506 +               new_tag, (propagate) ? 1 : 0);
18507 +
18508 +       if (propagate)
18509 +               i_tag_write(inode, new_tag);
18510 +}
18511 +
18512 +#include <linux/module.h>
18513 +
18514 +EXPORT_SYMBOL_GPL(__dx_propagate_tag);
18515 +
18516 +#endif /* CONFIG_PROPAGATE */
18517 +
18518 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/limit.c linux-4.9/kernel/vserver/limit.c
18519 --- linux-4.9/kernel/vserver/limit.c    1970-01-01 01:00:00.000000000 +0100
18520 +++ linux-4.9/kernel/vserver/limit.c    2021-02-24 15:47:45.124410596 +0100
18521 @@ -0,0 +1,386 @@
18522 +/*
18523 + *  linux/kernel/vserver/limit.c
18524 + *
18525 + *  Virtual Server: Context Limits
18526 + *
18527 + *  Copyright (C) 2004-2010  Herbert P?tzl
18528 + *
18529 + *  V0.01  broken out from vcontext V0.05
18530 + *  V0.02  changed vcmds to vxi arg
18531 + *  V0.03  added memory cgroup support
18532 + *
18533 + */
18534 +
18535 +#include <linux/sched.h>
18536 +#include <linux/module.h>
18537 +#include <linux/memcontrol.h>
18538 +#include <linux/page_counter.h>
18539 +#include <linux/vs_limit.h>
18540 +#include <linux/vserver/limit.h>
18541 +#include <linux/vserver/limit_cmd.h>
18542 +
18543 +#include <asm/uaccess.h>
18544 +
18545 +
18546 +const char *vlimit_name[NUM_LIMITS] = {
18547 +       [RLIMIT_CPU]            = "CPU",
18548 +       [RLIMIT_NPROC]          = "NPROC",
18549 +       [RLIMIT_NOFILE]         = "NOFILE",
18550 +       [RLIMIT_LOCKS]          = "LOCKS",
18551 +       [RLIMIT_SIGPENDING]     = "SIGP",
18552 +       [RLIMIT_MSGQUEUE]       = "MSGQ",
18553 +
18554 +       [VLIMIT_NSOCK]          = "NSOCK",
18555 +       [VLIMIT_OPENFD]         = "OPENFD",
18556 +       [VLIMIT_SHMEM]          = "SHMEM",
18557 +       [VLIMIT_DENTRY]         = "DENTRY",
18558 +};
18559 +
18560 +EXPORT_SYMBOL_GPL(vlimit_name);
18561 +
18562 +#define MASK_ENTRY(x)  (1 << (x))
18563 +
18564 +const struct vcmd_ctx_rlimit_mask_v0 vlimit_mask = {
18565 +               /* minimum */
18566 +       0
18567 +       ,       /* softlimit */
18568 +       0
18569 +       ,       /* maximum */
18570 +       MASK_ENTRY( RLIMIT_NPROC        ) |
18571 +       MASK_ENTRY( RLIMIT_NOFILE       ) |
18572 +       MASK_ENTRY( RLIMIT_LOCKS        ) |
18573 +       MASK_ENTRY( RLIMIT_MSGQUEUE     ) |
18574 +
18575 +       MASK_ENTRY( VLIMIT_NSOCK        ) |
18576 +       MASK_ENTRY( VLIMIT_OPENFD       ) |
18577 +       MASK_ENTRY( VLIMIT_SHMEM        ) |
18578 +       MASK_ENTRY( VLIMIT_DENTRY       ) |
18579 +       0
18580 +};
18581 +               /* accounting only */
18582 +uint32_t account_mask =
18583 +       MASK_ENTRY( VLIMIT_SEMARY       ) |
18584 +       MASK_ENTRY( VLIMIT_NSEMS        ) |
18585 +       MASK_ENTRY( VLIMIT_MAPPED       ) |
18586 +       0;
18587 +
18588 +
18589 +static int is_valid_vlimit(int id)
18590 +{
18591 +       uint32_t mask = vlimit_mask.minimum |
18592 +               vlimit_mask.softlimit | vlimit_mask.maximum;
18593 +       return mask & (1 << id);
18594 +}
18595 +
18596 +static int is_accounted_vlimit(int id)
18597 +{
18598 +       if (is_valid_vlimit(id))
18599 +               return 1;
18600 +       return account_mask & (1 << id);
18601 +}
18602 +
18603 +
18604 +static inline uint64_t vc_get_soft(struct vx_info *vxi, int id)
18605 +{
18606 +       rlim_t limit = __rlim_soft(&vxi->limit, id);
18607 +       return VX_VLIM(limit);
18608 +}
18609 +
18610 +static inline uint64_t vc_get_hard(struct vx_info *vxi, int id)
18611 +{
18612 +       rlim_t limit = __rlim_hard(&vxi->limit, id);
18613 +       return VX_VLIM(limit);
18614 +}
18615 +
18616 +static int do_get_rlimit(struct vx_info *vxi, uint32_t id,
18617 +       uint64_t *minimum, uint64_t *softlimit, uint64_t *maximum)
18618 +{
18619 +       if (!is_valid_vlimit(id))
18620 +               return -EINVAL;
18621 +
18622 +       if (minimum)
18623 +               *minimum = CRLIM_UNSET;
18624 +       if (softlimit)
18625 +               *softlimit = vc_get_soft(vxi, id);
18626 +       if (maximum)
18627 +               *maximum = vc_get_hard(vxi, id);
18628 +       return 0;
18629 +}
18630 +
18631 +int vc_get_rlimit(struct vx_info *vxi, void __user *data)
18632 +{
18633 +       struct vcmd_ctx_rlimit_v0 vc_data;
18634 +       int ret;
18635 +
18636 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18637 +               return -EFAULT;
18638 +
18639 +       ret = do_get_rlimit(vxi, vc_data.id,
18640 +               &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
18641 +       if (ret)
18642 +               return ret;
18643 +
18644 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18645 +               return -EFAULT;
18646 +       return 0;
18647 +}
18648 +
18649 +static int do_set_rlimit(struct vx_info *vxi, uint32_t id,
18650 +       uint64_t minimum, uint64_t softlimit, uint64_t maximum)
18651 +{
18652 +       if (!is_valid_vlimit(id))
18653 +               return -EINVAL;
18654 +
18655 +       if (maximum != CRLIM_KEEP)
18656 +               __rlim_hard(&vxi->limit, id) = VX_RLIM(maximum);
18657 +       if (softlimit != CRLIM_KEEP)
18658 +               __rlim_soft(&vxi->limit, id) = VX_RLIM(softlimit);
18659 +
18660 +       /* clamp soft limit */
18661 +       if (__rlim_soft(&vxi->limit, id) > __rlim_hard(&vxi->limit, id))
18662 +               __rlim_soft(&vxi->limit, id) = __rlim_hard(&vxi->limit, id);
18663 +
18664 +       return 0;
18665 +}
18666 +
18667 +int vc_set_rlimit(struct vx_info *vxi, void __user *data)
18668 +{
18669 +       struct vcmd_ctx_rlimit_v0 vc_data;
18670 +
18671 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18672 +               return -EFAULT;
18673 +
18674 +       return do_set_rlimit(vxi, vc_data.id,
18675 +               vc_data.minimum, vc_data.softlimit, vc_data.maximum);
18676 +}
18677 +
18678 +#ifdef CONFIG_IA32_EMULATION
18679 +
18680 +int vc_set_rlimit_x32(struct vx_info *vxi, void __user *data)
18681 +{
18682 +       struct vcmd_ctx_rlimit_v0_x32 vc_data;
18683 +
18684 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18685 +               return -EFAULT;
18686 +
18687 +       return do_set_rlimit(vxi, vc_data.id,
18688 +               vc_data.minimum, vc_data.softlimit, vc_data.maximum);
18689 +}
18690 +
18691 +int vc_get_rlimit_x32(struct vx_info *vxi, void __user *data)
18692 +{
18693 +       struct vcmd_ctx_rlimit_v0_x32 vc_data;
18694 +       int ret;
18695 +
18696 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18697 +               return -EFAULT;
18698 +
18699 +       ret = do_get_rlimit(vxi, vc_data.id,
18700 +               &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
18701 +       if (ret)
18702 +               return ret;
18703 +
18704 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18705 +               return -EFAULT;
18706 +       return 0;
18707 +}
18708 +
18709 +#endif /* CONFIG_IA32_EMULATION */
18710 +
18711 +
18712 +int vc_get_rlimit_mask(uint32_t id, void __user *data)
18713 +{
18714 +       if (copy_to_user(data, &vlimit_mask, sizeof(vlimit_mask)))
18715 +               return -EFAULT;
18716 +       return 0;
18717 +}
18718 +
18719 +
18720 +static inline void vx_reset_hits(struct _vx_limit *limit)
18721 +{
18722 +       int lim;
18723 +
18724 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18725 +               atomic_set(&__rlim_lhit(limit, lim), 0);
18726 +       }
18727 +}
18728 +
18729 +int vc_reset_hits(struct vx_info *vxi, void __user *data)
18730 +{
18731 +       vx_reset_hits(&vxi->limit);
18732 +       return 0;
18733 +}
18734 +
18735 +static inline void vx_reset_minmax(struct _vx_limit *limit)
18736 +{
18737 +       rlim_t value;
18738 +       int lim;
18739 +
18740 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18741 +               value = __rlim_get(limit, lim);
18742 +               __rlim_rmax(limit, lim) = value;
18743 +               __rlim_rmin(limit, lim) = value;
18744 +       }
18745 +}
18746 +
18747 +int vc_reset_minmax(struct vx_info *vxi, void __user *data)
18748 +{
18749 +       vx_reset_minmax(&vxi->limit);
18750 +       return 0;
18751 +}
18752 +
18753 +
18754 +int vc_rlimit_stat(struct vx_info *vxi, void __user *data)
18755 +{
18756 +       struct vcmd_rlimit_stat_v0 vc_data;
18757 +       struct _vx_limit *limit = &vxi->limit;
18758 +       int id;
18759 +
18760 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
18761 +               return -EFAULT;
18762 +
18763 +       id = vc_data.id;
18764 +       if (!is_accounted_vlimit(id))
18765 +               return -EINVAL;
18766 +
18767 +       vx_limit_fixup(limit, id);
18768 +       vc_data.hits = atomic_read(&__rlim_lhit(limit, id));
18769 +       vc_data.value = __rlim_get(limit, id);
18770 +       vc_data.minimum = __rlim_rmin(limit, id);
18771 +       vc_data.maximum = __rlim_rmax(limit, id);
18772 +
18773 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
18774 +               return -EFAULT;
18775 +       return 0;
18776 +}
18777 +
18778 +
18779 +#ifdef CONFIG_MEMCG
18780 +
18781 +void dump_sysinfo(struct sysinfo *si)
18782 +{
18783 +       printk(KERN_INFO "sysinfo: memunit=%u\n"
18784 +               "\ttotalram:\t%lu\n"
18785 +               "\tfreeram:\t%lu\n"
18786 +               "\tsharedram:\t%lu\n"
18787 +               "\tbufferram:\t%lu\n"
18788 +               "\ttotalswap:\t%lu\n"
18789 +               "\tfreeswap:\t%lu\n"
18790 +               "\ttotalhigh:\t%lu\n"
18791 +               "\tfreehigh:\t%lu\n",
18792 +               si->mem_unit,
18793 +               si->totalram,
18794 +               si->freeram,
18795 +               si->sharedram,
18796 +               si->bufferram,
18797 +               si->totalswap,
18798 +               si->freeswap,
18799 +               si->totalhigh,
18800 +               si->freehigh);
18801 +}
18802 +
18803 +void vx_vsi_meminfo(struct sysinfo *val)
18804 +{
18805 +       struct mem_cgroup *mcg;
18806 +       unsigned long res_limit, res_usage;
18807 +       unsigned shift;
18808 +
18809 +       if (VXD_CBIT(cvirt, 4))
18810 +               dump_sysinfo(val);
18811 +
18812 +       rcu_read_lock();
18813 +       mcg = mem_cgroup_from_task(current);
18814 +       if (VXD_CBIT(cvirt, 5))
18815 +               dump_mem_cgroup(mcg);
18816 +       rcu_read_unlock();
18817 +       if (!mcg)
18818 +               goto out;
18819 +
18820 +       res_limit = mem_cgroup_mem_limit_pages(mcg);
18821 +       res_usage = mem_cgroup_mem_usage_pages(mcg);
18822 +       shift = val->mem_unit == 1 ? PAGE_SHIFT : 0;
18823 +
18824 +       if (res_limit != PAGE_COUNTER_MAX)
18825 +               val->totalram = res_limit << shift;
18826 +       val->freeram = val->totalram - (res_usage << shift);
18827 +       val->bufferram = 0;
18828 +       val->totalhigh = 0;
18829 +       val->freehigh = 0;
18830 +out:
18831 +       return;
18832 +}
18833 +
18834 +void vx_vsi_swapinfo(struct sysinfo *val)
18835 +{
18836 +#ifdef CONFIG_MEMCG_SWAP
18837 +       struct mem_cgroup *mcg;
18838 +       unsigned long res_limit, res_usage, memsw_limit, memsw_usage;
18839 +       signed long swap_limit, swap_usage;
18840 +       unsigned shift;
18841 +
18842 +       if (VXD_CBIT(cvirt, 6))
18843 +               dump_sysinfo(val);
18844 +
18845 +       rcu_read_lock();
18846 +       mcg = mem_cgroup_from_task(current);
18847 +       if (VXD_CBIT(cvirt, 7))
18848 +               dump_mem_cgroup(mcg);
18849 +       rcu_read_unlock();
18850 +       if (!mcg)
18851 +               goto out;
18852 +
18853 +       res_limit = mem_cgroup_mem_limit_pages(mcg);
18854 +
18855 +       /* memory unlimited */
18856 +       if (res_limit == PAGE_COUNTER_MAX)
18857 +               goto out;
18858 +
18859 +       res_usage = mem_cgroup_mem_usage_pages(mcg);
18860 +       memsw_limit = mem_cgroup_memsw_limit_pages(mcg);
18861 +       memsw_usage = mem_cgroup_memsw_usage_pages(mcg);
18862 +       shift = val->mem_unit == 1 ? PAGE_SHIFT : 0;
18863 +
18864 +       swap_limit = memsw_limit - res_limit;
18865 +       /* we have a swap limit? */
18866 +       if (memsw_limit != PAGE_COUNTER_MAX)
18867 +               val->totalswap = swap_limit << shift;
18868 +
18869 +       /* calculate swap part */
18870 +       swap_usage = (memsw_usage > res_usage) ?
18871 +               memsw_usage - res_usage : 0;
18872 +
18873 +       /* total shown minus usage gives free swap */
18874 +       val->freeswap = (swap_usage < swap_limit) ?
18875 +               val->totalswap - (swap_usage << shift) : 0;
18876 +out:
18877 +#else  /* !CONFIG_MEMCG_SWAP */
18878 +       val->totalswap = 0;
18879 +       val->freeswap = 0;
18880 +#endif /* !CONFIG_MEMCG_SWAP */
18881 +       return;
18882 +}
18883 +
18884 +long vx_vsi_cached(struct sysinfo *val)
18885 +{
18886 +       long cache = 0;
18887 +#ifdef CONFIG_MEMCG_BROKEN
18888 +       struct mem_cgroup *mcg;
18889 +
18890 +       if (VXD_CBIT(cvirt, 8))
18891 +               dump_sysinfo(val);
18892 +
18893 +       rcu_read_lock();
18894 +       mcg = mem_cgroup_from_task(current);
18895 +       if (VXD_CBIT(cvirt, 9))
18896 +               dump_mem_cgroup(mcg);
18897 +       rcu_read_unlock();
18898 +       if (!mcg)
18899 +               goto out;
18900 +
18901 +       // cache = mem_cgroup_stat_read_cache(mcg);
18902 +out:
18903 +#endif
18904 +       return cache;
18905 +}
18906 +#endif /* !CONFIG_MEMCG */
18907 +
18908 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/limit_init.h linux-4.9/kernel/vserver/limit_init.h
18909 --- linux-4.9/kernel/vserver/limit_init.h       1970-01-01 01:00:00.000000000 +0100
18910 +++ linux-4.9/kernel/vserver/limit_init.h       2021-02-24 15:47:45.124410596 +0100
18911 @@ -0,0 +1,31 @@
18912 +
18913 +
18914 +static inline void vx_info_init_limit(struct _vx_limit *limit)
18915 +{
18916 +       int lim;
18917 +
18918 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18919 +               __rlim_soft(limit, lim) = RLIM_INFINITY;
18920 +               __rlim_hard(limit, lim) = RLIM_INFINITY;
18921 +               __rlim_set(limit, lim, 0);
18922 +               atomic_set(&__rlim_lhit(limit, lim), 0);
18923 +               __rlim_rmin(limit, lim) = 0;
18924 +               __rlim_rmax(limit, lim) = 0;
18925 +       }
18926 +}
18927 +
18928 +static inline void vx_info_exit_limit(struct _vx_limit *limit)
18929 +{
18930 +       rlim_t value;
18931 +       int lim;
18932 +
18933 +       for (lim = 0; lim < NUM_LIMITS; lim++) {
18934 +               if ((1 << lim) & VLIM_NOCHECK)
18935 +                       continue;
18936 +               value = __rlim_get(limit, lim);
18937 +               vxwprintk_xid(value,
18938 +                       "!!! limit: %p[%s,%d] = %ld on exit.",
18939 +                       limit, vlimit_name[lim], lim, (long)value);
18940 +       }
18941 +}
18942 +
18943 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/limit_proc.h linux-4.9/kernel/vserver/limit_proc.h
18944 --- linux-4.9/kernel/vserver/limit_proc.h       1970-01-01 01:00:00.000000000 +0100
18945 +++ linux-4.9/kernel/vserver/limit_proc.h       2021-02-24 15:47:45.124410596 +0100
18946 @@ -0,0 +1,57 @@
18947 +#ifndef _VX_LIMIT_PROC_H
18948 +#define _VX_LIMIT_PROC_H
18949 +
18950 +#include <linux/vserver/limit_int.h>
18951 +
18952 +
18953 +#define VX_LIMIT_FMT   ":\t%8ld\t%8ld/%8ld\t%8lld/%8lld\t%6d\n"
18954 +#define VX_LIMIT_TOP   \
18955 +       "Limit\t current\t     min/max\t\t    soft/hard\t\thits\n"
18956 +
18957 +#define VX_LIMIT_ARG(r)                                \
18958 +       (unsigned long)__rlim_get(limit, r),    \
18959 +       (unsigned long)__rlim_rmin(limit, r),   \
18960 +       (unsigned long)__rlim_rmax(limit, r),   \
18961 +       VX_VLIM(__rlim_soft(limit, r)),         \
18962 +       VX_VLIM(__rlim_hard(limit, r)),         \
18963 +       atomic_read(&__rlim_lhit(limit, r))
18964 +
18965 +static inline int vx_info_proc_limit(struct _vx_limit *limit, char *buffer)
18966 +{
18967 +       vx_limit_fixup(limit, -1);
18968 +       return sprintf(buffer, VX_LIMIT_TOP
18969 +               "PROC"  VX_LIMIT_FMT
18970 +               "VM"    VX_LIMIT_FMT
18971 +               "VML"   VX_LIMIT_FMT
18972 +               "RSS"   VX_LIMIT_FMT
18973 +               "ANON"  VX_LIMIT_FMT
18974 +               "RMAP"  VX_LIMIT_FMT
18975 +               "FILES" VX_LIMIT_FMT
18976 +               "OFD"   VX_LIMIT_FMT
18977 +               "LOCKS" VX_LIMIT_FMT
18978 +               "SOCK"  VX_LIMIT_FMT
18979 +               "MSGQ"  VX_LIMIT_FMT
18980 +               "SHM"   VX_LIMIT_FMT
18981 +               "SEMA"  VX_LIMIT_FMT
18982 +               "SEMS"  VX_LIMIT_FMT
18983 +               "DENT"  VX_LIMIT_FMT,
18984 +               VX_LIMIT_ARG(RLIMIT_NPROC),
18985 +               VX_LIMIT_ARG(RLIMIT_AS),
18986 +               VX_LIMIT_ARG(RLIMIT_MEMLOCK),
18987 +               VX_LIMIT_ARG(RLIMIT_RSS),
18988 +               VX_LIMIT_ARG(VLIMIT_ANON),
18989 +               VX_LIMIT_ARG(VLIMIT_MAPPED),
18990 +               VX_LIMIT_ARG(RLIMIT_NOFILE),
18991 +               VX_LIMIT_ARG(VLIMIT_OPENFD),
18992 +               VX_LIMIT_ARG(RLIMIT_LOCKS),
18993 +               VX_LIMIT_ARG(VLIMIT_NSOCK),
18994 +               VX_LIMIT_ARG(RLIMIT_MSGQUEUE),
18995 +               VX_LIMIT_ARG(VLIMIT_SHMEM),
18996 +               VX_LIMIT_ARG(VLIMIT_SEMARY),
18997 +               VX_LIMIT_ARG(VLIMIT_NSEMS),
18998 +               VX_LIMIT_ARG(VLIMIT_DENTRY));
18999 +}
19000 +
19001 +#endif /* _VX_LIMIT_PROC_H */
19002 +
19003 +
19004 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/network.c linux-4.9/kernel/vserver/network.c
19005 --- linux-4.9/kernel/vserver/network.c  1970-01-01 01:00:00.000000000 +0100
19006 +++ linux-4.9/kernel/vserver/network.c  2021-02-24 15:47:45.124410596 +0100
19007 @@ -0,0 +1,1053 @@
19008 +/*
19009 + *  linux/kernel/vserver/network.c
19010 + *
19011 + *  Virtual Server: Network Support
19012 + *
19013 + *  Copyright (C) 2003-2007  Herbert P?tzl
19014 + *
19015 + *  V0.01  broken out from vcontext V0.05
19016 + *  V0.02  cleaned up implementation
19017 + *  V0.03  added equiv nx commands
19018 + *  V0.04  switch to RCU based hash
19019 + *  V0.05  and back to locking again
19020 + *  V0.06  changed vcmds to nxi arg
19021 + *  V0.07  have __create claim() the nxi
19022 + *
19023 + */
19024 +
19025 +#include <linux/err.h>
19026 +#include <linux/slab.h>
19027 +#include <linux/rcupdate.h>
19028 +#include <net/ipv6.h>
19029 +
19030 +#include <linux/vs_network.h>
19031 +#include <linux/vs_pid.h>
19032 +#include <linux/vserver/network_cmd.h>
19033 +
19034 +
19035 +atomic_t nx_global_ctotal      = ATOMIC_INIT(0);
19036 +atomic_t nx_global_cactive     = ATOMIC_INIT(0);
19037 +
19038 +static struct kmem_cache *nx_addr_v4_cachep = NULL;
19039 +static struct kmem_cache *nx_addr_v6_cachep = NULL;
19040 +
19041 +
19042 +static int __init init_network(void)
19043 +{
19044 +       nx_addr_v4_cachep = kmem_cache_create("nx_v4_addr_cache",
19045 +               sizeof(struct nx_addr_v4), 0,
19046 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
19047 +       nx_addr_v6_cachep = kmem_cache_create("nx_v6_addr_cache",
19048 +               sizeof(struct nx_addr_v6), 0,
19049 +               SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
19050 +       return 0;
19051 +}
19052 +
19053 +
19054 +/*     __alloc_nx_addr_v4()                                    */
19055 +
19056 +static inline struct nx_addr_v4 *__alloc_nx_addr_v4(void)
19057 +{
19058 +       struct nx_addr_v4 *nxa = kmem_cache_alloc(
19059 +               nx_addr_v4_cachep, GFP_KERNEL);
19060 +
19061 +       if (!IS_ERR(nxa))
19062 +               memset(nxa, 0, sizeof(*nxa));
19063 +       return nxa;
19064 +}
19065 +
19066 +/*     __dealloc_nx_addr_v4()                                  */
19067 +
19068 +static inline void __dealloc_nx_addr_v4(struct nx_addr_v4 *nxa)
19069 +{
19070 +       kmem_cache_free(nx_addr_v4_cachep, nxa);
19071 +}
19072 +
19073 +/*     __dealloc_nx_addr_v4_all()                              */
19074 +
19075 +static inline void __dealloc_nx_addr_v4_all(struct nx_addr_v4 *nxa)
19076 +{
19077 +       while (nxa) {
19078 +               struct nx_addr_v4 *next = nxa->next;
19079 +
19080 +               __dealloc_nx_addr_v4(nxa);
19081 +               nxa = next;
19082 +       }
19083 +}
19084 +
19085 +
19086 +#ifdef CONFIG_IPV6
19087 +
19088 +/*     __alloc_nx_addr_v6()                                    */
19089 +
19090 +static inline struct nx_addr_v6 *__alloc_nx_addr_v6(void)
19091 +{
19092 +       struct nx_addr_v6 *nxa = kmem_cache_alloc(
19093 +               nx_addr_v6_cachep, GFP_KERNEL);
19094 +
19095 +       if (!IS_ERR(nxa))
19096 +               memset(nxa, 0, sizeof(*nxa));
19097 +       return nxa;
19098 +}
19099 +
19100 +/*     __dealloc_nx_addr_v6()                                  */
19101 +
19102 +static inline void __dealloc_nx_addr_v6(struct nx_addr_v6 *nxa)
19103 +{
19104 +       kmem_cache_free(nx_addr_v6_cachep, nxa);
19105 +}
19106 +
19107 +/*     __dealloc_nx_addr_v6_all()                              */
19108 +
19109 +static inline void __dealloc_nx_addr_v6_all(struct nx_addr_v6 *nxa)
19110 +{
19111 +       while (nxa) {
19112 +               struct nx_addr_v6 *next = nxa->next;
19113 +
19114 +               __dealloc_nx_addr_v6(nxa);
19115 +               nxa = next;
19116 +       }
19117 +}
19118 +
19119 +#endif /* CONFIG_IPV6 */
19120 +
19121 +/*     __alloc_nx_info()
19122 +
19123 +       * allocate an initialized nx_info struct
19124 +       * doesn't make it visible (hash)                        */
19125 +
19126 +static struct nx_info *__alloc_nx_info(vnid_t nid)
19127 +{
19128 +       struct nx_info *new = NULL;
19129 +
19130 +       vxdprintk(VXD_CBIT(nid, 1), "alloc_nx_info(%d)*", nid);
19131 +
19132 +       /* would this benefit from a slab cache? */
19133 +       new = kmalloc(sizeof(struct nx_info), GFP_KERNEL);
19134 +       if (!new)
19135 +               return 0;
19136 +
19137 +       memset(new, 0, sizeof(struct nx_info));
19138 +       new->nx_id = nid;
19139 +       INIT_HLIST_NODE(&new->nx_hlist);
19140 +       atomic_set(&new->nx_usecnt, 0);
19141 +       atomic_set(&new->nx_tasks, 0);
19142 +       spin_lock_init(&new->addr_lock);
19143 +       new->nx_state = 0;
19144 +
19145 +       new->nx_flags = NXF_INIT_SET;
19146 +
19147 +       /* rest of init goes here */
19148 +
19149 +       new->v4_lback.s_addr = htonl(INADDR_LOOPBACK);
19150 +       new->v4_bcast.s_addr = htonl(INADDR_BROADCAST);
19151 +
19152 +       vxdprintk(VXD_CBIT(nid, 0),
19153 +               "alloc_nx_info(%d) = %p", nid, new);
19154 +       atomic_inc(&nx_global_ctotal);
19155 +       return new;
19156 +}
19157 +
19158 +/*     __dealloc_nx_info()
19159 +
19160 +       * final disposal of nx_info                             */
19161 +
19162 +static void __dealloc_nx_info(struct nx_info *nxi)
19163 +{
19164 +       vxdprintk(VXD_CBIT(nid, 0),
19165 +               "dealloc_nx_info(%p)", nxi);
19166 +
19167 +       nxi->nx_hlist.next = LIST_POISON1;
19168 +       nxi->nx_id = -1;
19169 +
19170 +       BUG_ON(atomic_read(&nxi->nx_usecnt));
19171 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19172 +
19173 +       __dealloc_nx_addr_v4_all(nxi->v4.next);
19174 +#ifdef CONFIG_IPV6
19175 +       __dealloc_nx_addr_v6_all(nxi->v6.next);
19176 +#endif
19177 +
19178 +       nxi->nx_state |= NXS_RELEASED;
19179 +       kfree(nxi);
19180 +       atomic_dec(&nx_global_ctotal);
19181 +}
19182 +
19183 +static void __shutdown_nx_info(struct nx_info *nxi)
19184 +{
19185 +       nxi->nx_state |= NXS_SHUTDOWN;
19186 +       vs_net_change(nxi, VSC_NETDOWN);
19187 +}
19188 +
19189 +/*     exported stuff                                          */
19190 +
19191 +void free_nx_info(struct nx_info *nxi)
19192 +{
19193 +       /* context shutdown is mandatory */
19194 +       BUG_ON(nxi->nx_state != NXS_SHUTDOWN);
19195 +
19196 +       /* context must not be hashed */
19197 +       BUG_ON(nxi->nx_state & NXS_HASHED);
19198 +
19199 +       BUG_ON(atomic_read(&nxi->nx_usecnt));
19200 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19201 +
19202 +       __dealloc_nx_info(nxi);
19203 +}
19204 +
19205 +
19206 +void __nx_set_lback(struct nx_info *nxi)
19207 +{
19208 +       int nid = nxi->nx_id;
19209 +       __be32 lback = htonl(INADDR_LOOPBACK ^ ((nid & 0xFFFF) << 8));
19210 +
19211 +       nxi->v4_lback.s_addr = lback;
19212 +}
19213 +
19214 +extern int __nx_inet_add_lback(__be32 addr);
19215 +extern int __nx_inet_del_lback(__be32 addr);
19216 +
19217 +
19218 +/*     hash table for nx_info hash */
19219 +
19220 +#define NX_HASH_SIZE   13
19221 +
19222 +struct hlist_head nx_info_hash[NX_HASH_SIZE];
19223 +
19224 +static DEFINE_SPINLOCK(nx_info_hash_lock);
19225 +
19226 +
19227 +static inline unsigned int __hashval(vnid_t nid)
19228 +{
19229 +       return (nid % NX_HASH_SIZE);
19230 +}
19231 +
19232 +
19233 +
19234 +/*     __hash_nx_info()
19235 +
19236 +       * add the nxi to the global hash table
19237 +       * requires the hash_lock to be held                     */
19238 +
19239 +static inline void __hash_nx_info(struct nx_info *nxi)
19240 +{
19241 +       struct hlist_head *head;
19242 +
19243 +       vxd_assert_lock(&nx_info_hash_lock);
19244 +       vxdprintk(VXD_CBIT(nid, 4),
19245 +               "__hash_nx_info: %p[#%d]", nxi, nxi->nx_id);
19246 +
19247 +       /* context must not be hashed */
19248 +       BUG_ON(nx_info_state(nxi, NXS_HASHED));
19249 +
19250 +       nxi->nx_state |= NXS_HASHED;
19251 +       head = &nx_info_hash[__hashval(nxi->nx_id)];
19252 +       hlist_add_head(&nxi->nx_hlist, head);
19253 +       atomic_inc(&nx_global_cactive);
19254 +}
19255 +
19256 +/*     __unhash_nx_info()
19257 +
19258 +       * remove the nxi from the global hash table
19259 +       * requires the hash_lock to be held                     */
19260 +
19261 +static inline void __unhash_nx_info(struct nx_info *nxi)
19262 +{
19263 +       vxd_assert_lock(&nx_info_hash_lock);
19264 +       vxdprintk(VXD_CBIT(nid, 4),
19265 +               "__unhash_nx_info: %p[#%d.%d.%d]", nxi, nxi->nx_id,
19266 +               atomic_read(&nxi->nx_usecnt), atomic_read(&nxi->nx_tasks));
19267 +
19268 +       /* context must be hashed */
19269 +       BUG_ON(!nx_info_state(nxi, NXS_HASHED));
19270 +       /* but without tasks */
19271 +       BUG_ON(atomic_read(&nxi->nx_tasks));
19272 +
19273 +       nxi->nx_state &= ~NXS_HASHED;
19274 +       hlist_del(&nxi->nx_hlist);
19275 +       atomic_dec(&nx_global_cactive);
19276 +}
19277 +
19278 +
19279 +/*     __lookup_nx_info()
19280 +
19281 +       * requires the hash_lock to be held
19282 +       * doesn't increment the nx_refcnt                       */
19283 +
19284 +static inline struct nx_info *__lookup_nx_info(vnid_t nid)
19285 +{
19286 +       struct hlist_head *head = &nx_info_hash[__hashval(nid)];
19287 +       struct hlist_node *pos;
19288 +       struct nx_info *nxi;
19289 +
19290 +       vxd_assert_lock(&nx_info_hash_lock);
19291 +       hlist_for_each(pos, head) {
19292 +               nxi = hlist_entry(pos, struct nx_info, nx_hlist);
19293 +
19294 +               if (nxi->nx_id == nid)
19295 +                       goto found;
19296 +       }
19297 +       nxi = NULL;
19298 +found:
19299 +       vxdprintk(VXD_CBIT(nid, 0),
19300 +               "__lookup_nx_info(#%u): %p[#%u]",
19301 +               nid, nxi, nxi ? nxi->nx_id : 0);
19302 +       return nxi;
19303 +}
19304 +
19305 +
19306 +/*     __create_nx_info()
19307 +
19308 +       * create the requested context
19309 +       * get(), claim() and hash it                            */
19310 +
19311 +static struct nx_info *__create_nx_info(int id)
19312 +{
19313 +       struct nx_info *new, *nxi = NULL;
19314 +
19315 +       vxdprintk(VXD_CBIT(nid, 1), "create_nx_info(%d)*", id);
19316 +
19317 +       if (!(new = __alloc_nx_info(id)))
19318 +               return ERR_PTR(-ENOMEM);
19319 +
19320 +       /* required to make dynamic xids unique */
19321 +       spin_lock(&nx_info_hash_lock);
19322 +
19323 +       /* static context requested */
19324 +       if ((nxi = __lookup_nx_info(id))) {
19325 +               vxdprintk(VXD_CBIT(nid, 0),
19326 +                       "create_nx_info(%d) = %p (already there)", id, nxi);
19327 +               if (nx_info_flags(nxi, NXF_STATE_SETUP, 0))
19328 +                       nxi = ERR_PTR(-EBUSY);
19329 +               else
19330 +                       nxi = ERR_PTR(-EEXIST);
19331 +               goto out_unlock;
19332 +       }
19333 +       /* new context */
19334 +       vxdprintk(VXD_CBIT(nid, 0),
19335 +               "create_nx_info(%d) = %p (new)", id, new);
19336 +       claim_nx_info(new, NULL);
19337 +       __nx_set_lback(new);
19338 +       __hash_nx_info(get_nx_info(new));
19339 +       nxi = new, new = NULL;
19340 +
19341 +out_unlock:
19342 +       spin_unlock(&nx_info_hash_lock);
19343 +       if (new)
19344 +               __dealloc_nx_info(new);
19345 +       return nxi;
19346 +}
19347 +
19348 +
19349 +
19350 +/*     exported stuff                                          */
19351 +
19352 +
19353 +void unhash_nx_info(struct nx_info *nxi)
19354 +{
19355 +       __shutdown_nx_info(nxi);
19356 +       spin_lock(&nx_info_hash_lock);
19357 +       __unhash_nx_info(nxi);
19358 +       spin_unlock(&nx_info_hash_lock);
19359 +}
19360 +
19361 +/*     lookup_nx_info()
19362 +
19363 +       * search for a nx_info and get() it
19364 +       * negative id means current                             */
19365 +
19366 +struct nx_info *lookup_nx_info(int id)
19367 +{
19368 +       struct nx_info *nxi = NULL;
19369 +
19370 +       if (id < 0) {
19371 +               nxi = get_nx_info(current_nx_info());
19372 +       } else if (id > 1) {
19373 +               spin_lock(&nx_info_hash_lock);
19374 +               nxi = get_nx_info(__lookup_nx_info(id));
19375 +               spin_unlock(&nx_info_hash_lock);
19376 +       }
19377 +       return nxi;
19378 +}
19379 +
19380 +/*     nid_is_hashed()
19381 +
19382 +       * verify that nid is still hashed                       */
19383 +
19384 +int nid_is_hashed(vnid_t nid)
19385 +{
19386 +       int hashed;
19387 +
19388 +       spin_lock(&nx_info_hash_lock);
19389 +       hashed = (__lookup_nx_info(nid) != NULL);
19390 +       spin_unlock(&nx_info_hash_lock);
19391 +       return hashed;
19392 +}
19393 +
19394 +
19395 +#ifdef CONFIG_PROC_FS
19396 +
19397 +/*     get_nid_list()
19398 +
19399 +       * get a subset of hashed nids for proc
19400 +       * assumes size is at least one                          */
19401 +
19402 +int get_nid_list(int index, unsigned int *nids, int size)
19403 +{
19404 +       int hindex, nr_nids = 0;
19405 +
19406 +       /* only show current and children */
19407 +       if (!nx_check(0, VS_ADMIN | VS_WATCH)) {
19408 +               if (index > 0)
19409 +                       return 0;
19410 +               nids[nr_nids] = nx_current_nid();
19411 +               return 1;
19412 +       }
19413 +
19414 +       for (hindex = 0; hindex < NX_HASH_SIZE; hindex++) {
19415 +               struct hlist_head *head = &nx_info_hash[hindex];
19416 +               struct hlist_node *pos;
19417 +
19418 +               spin_lock(&nx_info_hash_lock);
19419 +               hlist_for_each(pos, head) {
19420 +                       struct nx_info *nxi;
19421 +
19422 +                       if (--index > 0)
19423 +                               continue;
19424 +
19425 +                       nxi = hlist_entry(pos, struct nx_info, nx_hlist);
19426 +                       nids[nr_nids] = nxi->nx_id;
19427 +                       if (++nr_nids >= size) {
19428 +                               spin_unlock(&nx_info_hash_lock);
19429 +                               goto out;
19430 +                       }
19431 +               }
19432 +               /* keep the lock time short */
19433 +               spin_unlock(&nx_info_hash_lock);
19434 +       }
19435 +out:
19436 +       return nr_nids;
19437 +}
19438 +#endif
19439 +
19440 +
19441 +/*
19442 + *     migrate task to new network
19443 + *     gets nxi, puts old_nxi on change
19444 + */
19445 +
19446 +int nx_migrate_task(struct task_struct *p, struct nx_info *nxi)
19447 +{
19448 +       struct nx_info *old_nxi;
19449 +       int ret = 0;
19450 +
19451 +       if (!p || !nxi)
19452 +               BUG();
19453 +
19454 +       vxdprintk(VXD_CBIT(nid, 5),
19455 +               "nx_migrate_task(%p,%p[#%d.%d.%d])",
19456 +               p, nxi, nxi->nx_id,
19457 +               atomic_read(&nxi->nx_usecnt),
19458 +               atomic_read(&nxi->nx_tasks));
19459 +
19460 +       if (nx_info_flags(nxi, NXF_INFO_PRIVATE, 0) &&
19461 +               !nx_info_flags(nxi, NXF_STATE_SETUP, 0))
19462 +               return -EACCES;
19463 +
19464 +       if (nx_info_state(nxi, NXS_SHUTDOWN))
19465 +               return -EFAULT;
19466 +
19467 +       /* maybe disallow this completely? */
19468 +       old_nxi = task_get_nx_info(p);
19469 +       if (old_nxi == nxi)
19470 +               goto out;
19471 +
19472 +       task_lock(p);
19473 +       if (old_nxi)
19474 +               clr_nx_info(&p->nx_info);
19475 +       claim_nx_info(nxi, p);
19476 +       set_nx_info(&p->nx_info, nxi);
19477 +       p->nid = nxi->nx_id;
19478 +       task_unlock(p);
19479 +
19480 +       vxdprintk(VXD_CBIT(nid, 5),
19481 +               "moved task %p into nxi:%p[#%d]",
19482 +               p, nxi, nxi->nx_id);
19483 +
19484 +       if (old_nxi)
19485 +               release_nx_info(old_nxi, p);
19486 +       ret = 0;
19487 +out:
19488 +       put_nx_info(old_nxi);
19489 +       return ret;
19490 +}
19491 +
19492 +
19493 +void nx_set_persistent(struct nx_info *nxi)
19494 +{
19495 +       vxdprintk(VXD_CBIT(nid, 6),
19496 +               "nx_set_persistent(%p[#%d])", nxi, nxi->nx_id);
19497 +
19498 +       get_nx_info(nxi);
19499 +       claim_nx_info(nxi, NULL);
19500 +}
19501 +
19502 +void nx_clear_persistent(struct nx_info *nxi)
19503 +{
19504 +       vxdprintk(VXD_CBIT(nid, 6),
19505 +               "nx_clear_persistent(%p[#%d])", nxi, nxi->nx_id);
19506 +
19507 +       release_nx_info(nxi, NULL);
19508 +       put_nx_info(nxi);
19509 +}
19510 +
19511 +void nx_update_persistent(struct nx_info *nxi)
19512 +{
19513 +       if (nx_info_flags(nxi, NXF_PERSISTENT, 0))
19514 +               nx_set_persistent(nxi);
19515 +       else
19516 +               nx_clear_persistent(nxi);
19517 +}
19518 +
19519 +/* vserver syscall commands below here */
19520 +
19521 +/* taks nid and nx_info functions */
19522 +
19523 +#include <asm/uaccess.h>
19524 +
19525 +
19526 +int vc_task_nid(uint32_t id)
19527 +{
19528 +       vnid_t nid;
19529 +
19530 +       if (id) {
19531 +               struct task_struct *tsk;
19532 +
19533 +               rcu_read_lock();
19534 +               tsk = find_task_by_real_pid(id);
19535 +               nid = (tsk) ? tsk->nid : -ESRCH;
19536 +               rcu_read_unlock();
19537 +       } else
19538 +               nid = nx_current_nid();
19539 +       return nid;
19540 +}
19541 +
19542 +
19543 +int vc_nx_info(struct nx_info *nxi, void __user *data)
19544 +{
19545 +       struct vcmd_nx_info_v0 vc_data;
19546 +
19547 +       vc_data.nid = nxi->nx_id;
19548 +
19549 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
19550 +               return -EFAULT;
19551 +       return 0;
19552 +}
19553 +
19554 +
19555 +/* network functions */
19556 +
19557 +int vc_net_create(uint32_t nid, void __user *data)
19558 +{
19559 +       struct vcmd_net_create vc_data = { .flagword = NXF_INIT_SET };
19560 +       struct nx_info *new_nxi;
19561 +       int ret;
19562 +
19563 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19564 +               return -EFAULT;
19565 +
19566 +       if ((nid > MAX_S_CONTEXT) || (nid < 2))
19567 +               return -EINVAL;
19568 +
19569 +       new_nxi = __create_nx_info(nid);
19570 +       if (IS_ERR(new_nxi))
19571 +               return PTR_ERR(new_nxi);
19572 +
19573 +       /* initial flags */
19574 +       new_nxi->nx_flags = vc_data.flagword;
19575 +
19576 +       ret = -ENOEXEC;
19577 +       if (vs_net_change(new_nxi, VSC_NETUP))
19578 +               goto out;
19579 +
19580 +       ret = nx_migrate_task(current, new_nxi);
19581 +       if (ret)
19582 +               goto out;
19583 +
19584 +       /* return context id on success */
19585 +       ret = new_nxi->nx_id;
19586 +
19587 +       /* get a reference for persistent contexts */
19588 +       if ((vc_data.flagword & NXF_PERSISTENT))
19589 +               nx_set_persistent(new_nxi);
19590 +out:
19591 +       release_nx_info(new_nxi, NULL);
19592 +       put_nx_info(new_nxi);
19593 +       return ret;
19594 +}
19595 +
19596 +
19597 +int vc_net_migrate(struct nx_info *nxi, void __user *data)
19598 +{
19599 +       return nx_migrate_task(current, nxi);
19600 +}
19601 +
19602 +
19603 +static inline
19604 +struct nx_addr_v4 *__find_v4_addr(struct nx_info *nxi,
19605 +       __be32 ip, __be32 ip2, __be32 mask, uint16_t type, uint16_t flags,
19606 +       struct nx_addr_v4 **prev)
19607 +{
19608 +       struct nx_addr_v4 *nxa = &nxi->v4;
19609 +
19610 +       for (; nxa; nxa = nxa->next) {
19611 +               if ((nxa->ip[0].s_addr == ip) &&
19612 +                   (nxa->ip[1].s_addr == ip2) &&
19613 +                   (nxa->mask.s_addr == mask) &&
19614 +                   (nxa->type == type) &&
19615 +                   (nxa->flags == flags))
19616 +                   return nxa;
19617 +
19618 +               /* save previous entry */
19619 +               if (prev)
19620 +                       *prev = nxa;
19621 +       }
19622 +       return NULL;
19623 +}
19624 +
19625 +int do_add_v4_addr(struct nx_info *nxi, __be32 ip, __be32 ip2, __be32 mask,
19626 +       uint16_t type, uint16_t flags)
19627 +{
19628 +       struct nx_addr_v4 *nxa = NULL;
19629 +       struct nx_addr_v4 *new = __alloc_nx_addr_v4();
19630 +       unsigned long irqflags;
19631 +       int ret = -EEXIST;
19632 +
19633 +       if (IS_ERR(new))
19634 +               return PTR_ERR(new);
19635 +
19636 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19637 +       if (__find_v4_addr(nxi, ip, ip2, mask, type, flags, &nxa))
19638 +               goto out_unlock;
19639 +
19640 +       if (NX_IPV4(nxi)) {
19641 +               nxa->next = new;
19642 +               nxa = new;
19643 +               new = NULL;
19644 +
19645 +               /* remove single ip for ip list */
19646 +               nxi->nx_flags &= ~NXF_SINGLE_IP;
19647 +       }
19648 +
19649 +       nxa->ip[0].s_addr = ip;
19650 +       nxa->ip[1].s_addr = ip2;
19651 +       nxa->mask.s_addr = mask;
19652 +       nxa->type = type;
19653 +       nxa->flags = flags;
19654 +       ret = 0;
19655 +out_unlock:
19656 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19657 +       if (new)
19658 +               __dealloc_nx_addr_v4(new);
19659 +       return ret;
19660 +}
19661 +
19662 +int do_remove_v4_addr(struct nx_info *nxi, __be32 ip, __be32 ip2, __be32 mask,
19663 +       uint16_t type, uint16_t flags)
19664 +{
19665 +       struct nx_addr_v4 *nxa = NULL;
19666 +       struct nx_addr_v4 *old = NULL;
19667 +       unsigned long irqflags;
19668 +       int ret = 0;
19669 +
19670 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19671 +       switch (type) {
19672 +       case NXA_TYPE_ADDR:
19673 +               old = __find_v4_addr(nxi, ip, ip2, mask, type, flags, &nxa);
19674 +               if (old) {
19675 +                       if (nxa) {
19676 +                               nxa->next = old->next;
19677 +                               old->next = NULL;
19678 +                       } else {
19679 +                               if (old->next) {
19680 +                                       nxa = old;
19681 +                                       old = old->next;
19682 +                                       *nxa = *old;
19683 +                                       old->next = NULL;
19684 +                               } else {
19685 +                                       memset(old, 0, sizeof(*old));
19686 +                                       old = NULL;
19687 +                               }
19688 +                       }
19689 +               } else
19690 +                       ret = -ESRCH;
19691 +               break;
19692 +
19693 +       case NXA_TYPE_ANY:
19694 +               nxa = &nxi->v4;
19695 +               old = nxa->next;
19696 +               memset(nxa, 0, sizeof(*nxa));
19697 +               break;
19698 +
19699 +       default:
19700 +               ret = -EINVAL;
19701 +       }
19702 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19703 +       __dealloc_nx_addr_v4_all(old);
19704 +       return ret;
19705 +}
19706 +
19707 +
19708 +int vc_net_add(struct nx_info *nxi, void __user *data)
19709 +{
19710 +       struct vcmd_net_addr_v0 vc_data;
19711 +       int index, ret = 0;
19712 +
19713 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19714 +               return -EFAULT;
19715 +
19716 +       switch (vc_data.type) {
19717 +       case NXA_TYPE_IPV4:
19718 +               if ((vc_data.count < 1) || (vc_data.count > 4))
19719 +                       return -EINVAL;
19720 +
19721 +               index = 0;
19722 +               while (index < vc_data.count) {
19723 +                       ret = do_add_v4_addr(nxi, vc_data.ip[index].s_addr, 0,
19724 +                               vc_data.mask[index].s_addr, NXA_TYPE_ADDR, 0);
19725 +                       if (ret)
19726 +                               return ret;
19727 +                       index++;
19728 +               }
19729 +               ret = index;
19730 +               break;
19731 +
19732 +       case NXA_TYPE_IPV4|NXA_MOD_BCAST:
19733 +               nxi->v4_bcast = vc_data.ip[0];
19734 +               ret = 1;
19735 +               break;
19736 +
19737 +       case NXA_TYPE_IPV4|NXA_MOD_LBACK:
19738 +               nxi->v4_lback = vc_data.ip[0];
19739 +               ret = 1;
19740 +               break;
19741 +
19742 +       default:
19743 +               ret = -EINVAL;
19744 +               break;
19745 +       }
19746 +       return ret;
19747 +}
19748 +
19749 +int vc_net_remove(struct nx_info *nxi, void __user *data)
19750 +{
19751 +       struct vcmd_net_addr_v0 vc_data;
19752 +
19753 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19754 +               return -EFAULT;
19755 +
19756 +       switch (vc_data.type) {
19757 +       case NXA_TYPE_ANY:
19758 +               return do_remove_v4_addr(nxi, 0, 0, 0, vc_data.type, 0);
19759 +       default:
19760 +               return -EINVAL;
19761 +       }
19762 +       return 0;
19763 +}
19764 +
19765 +
19766 +int vc_net_add_ipv4_v1(struct nx_info *nxi, void __user *data)
19767 +{
19768 +       struct vcmd_net_addr_ipv4_v1 vc_data;
19769 +
19770 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19771 +               return -EFAULT;
19772 +
19773 +       switch (vc_data.type) {
19774 +       case NXA_TYPE_ADDR:
19775 +       case NXA_TYPE_MASK:
19776 +               return do_add_v4_addr(nxi, vc_data.ip.s_addr, 0,
19777 +                       vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19778 +
19779 +       case NXA_TYPE_ADDR | NXA_MOD_BCAST:
19780 +               nxi->v4_bcast = vc_data.ip;
19781 +               break;
19782 +
19783 +       case NXA_TYPE_ADDR | NXA_MOD_LBACK:
19784 +               nxi->v4_lback = vc_data.ip;
19785 +               break;
19786 +
19787 +       default:
19788 +               return -EINVAL;
19789 +       }
19790 +       return 0;
19791 +}
19792 +
19793 +int vc_net_add_ipv4(struct nx_info *nxi, void __user *data)
19794 +{
19795 +       struct vcmd_net_addr_ipv4_v2 vc_data;
19796 +
19797 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19798 +               return -EFAULT;
19799 +
19800 +       switch (vc_data.type) {
19801 +       case NXA_TYPE_ADDR:
19802 +       case NXA_TYPE_MASK:
19803 +       case NXA_TYPE_RANGE:
19804 +               return do_add_v4_addr(nxi, vc_data.ip.s_addr, vc_data.ip2.s_addr,
19805 +                       vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19806 +
19807 +       case NXA_TYPE_ADDR | NXA_MOD_BCAST:
19808 +               nxi->v4_bcast = vc_data.ip;
19809 +               break;
19810 +
19811 +       case NXA_TYPE_ADDR | NXA_MOD_LBACK:
19812 +               nxi->v4_lback = vc_data.ip;
19813 +               break;
19814 +
19815 +       default:
19816 +               return -EINVAL;
19817 +       }
19818 +       return 0;
19819 +}
19820 +
19821 +int vc_net_rem_ipv4_v1(struct nx_info *nxi, void __user *data)
19822 +{
19823 +       struct vcmd_net_addr_ipv4_v1 vc_data;
19824 +
19825 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19826 +               return -EFAULT;
19827 +
19828 +       return do_remove_v4_addr(nxi, vc_data.ip.s_addr, 0,
19829 +               vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19830 +}
19831 +
19832 +int vc_net_rem_ipv4(struct nx_info *nxi, void __user *data)
19833 +{
19834 +       struct vcmd_net_addr_ipv4_v2 vc_data;
19835 +
19836 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19837 +               return -EFAULT;
19838 +
19839 +       return do_remove_v4_addr(nxi, vc_data.ip.s_addr, vc_data.ip2.s_addr,
19840 +               vc_data.mask.s_addr, vc_data.type, vc_data.flags);
19841 +}
19842 +
19843 +#ifdef CONFIG_IPV6
19844 +
19845 +static inline
19846 +struct nx_addr_v6 *__find_v6_addr(struct nx_info *nxi,
19847 +       struct in6_addr *ip, struct in6_addr *mask,
19848 +       uint32_t prefix, uint16_t type, uint16_t flags,
19849 +       struct nx_addr_v6 **prev)
19850 +{
19851 +       struct nx_addr_v6 *nxa = &nxi->v6;
19852 +
19853 +       for (; nxa; nxa = nxa->next) {
19854 +               if (ipv6_addr_equal(&nxa->ip, ip) &&
19855 +                   ipv6_addr_equal(&nxa->mask, mask) &&
19856 +                   (nxa->prefix == prefix) &&
19857 +                   (nxa->type == type) &&
19858 +                   (nxa->flags == flags))
19859 +                   return nxa;
19860 +
19861 +               /* save previous entry */
19862 +               if (prev)
19863 +                       *prev = nxa;
19864 +       }
19865 +       return NULL;
19866 +}
19867 +
19868 +
19869 +int do_add_v6_addr(struct nx_info *nxi,
19870 +       struct in6_addr *ip, struct in6_addr *mask,
19871 +       uint32_t prefix, uint16_t type, uint16_t flags)
19872 +{
19873 +       struct nx_addr_v6 *nxa = NULL;
19874 +       struct nx_addr_v6 *new = __alloc_nx_addr_v6();
19875 +       unsigned long irqflags;
19876 +       int ret = -EEXIST;
19877 +
19878 +       if (IS_ERR(new))
19879 +               return PTR_ERR(new);
19880 +
19881 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19882 +       if (__find_v6_addr(nxi, ip, mask, prefix, type, flags, &nxa))
19883 +               goto out_unlock;
19884 +
19885 +       if (NX_IPV6(nxi)) {
19886 +               nxa->next = new;
19887 +               nxa = new;
19888 +               new = NULL;
19889 +       }
19890 +
19891 +       nxa->ip = *ip;
19892 +       nxa->mask = *mask;
19893 +       nxa->prefix = prefix;
19894 +       nxa->type = type;
19895 +       nxa->flags = flags;
19896 +       ret = 0;
19897 +out_unlock:
19898 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19899 +       if (new)
19900 +               __dealloc_nx_addr_v6(new);
19901 +       return ret;
19902 +}
19903 +
19904 +int do_remove_v6_addr(struct nx_info *nxi,
19905 +       struct in6_addr *ip, struct in6_addr *mask,
19906 +       uint32_t prefix, uint16_t type, uint16_t flags)
19907 +{
19908 +       struct nx_addr_v6 *nxa = NULL;
19909 +       struct nx_addr_v6 *old = NULL;
19910 +       unsigned long irqflags;
19911 +       int ret = 0;
19912 +
19913 +       spin_lock_irqsave(&nxi->addr_lock, irqflags);
19914 +       switch (type) {
19915 +       case NXA_TYPE_ADDR:
19916 +               old = __find_v6_addr(nxi, ip, mask, prefix, type, flags, &nxa);
19917 +               if (old) {
19918 +                       if (nxa) {
19919 +                               nxa->next = old->next;
19920 +                               old->next = NULL;
19921 +                       } else {
19922 +                               if (old->next) {
19923 +                                       nxa = old;
19924 +                                       old = old->next;
19925 +                                       *nxa = *old;
19926 +                                       old->next = NULL;
19927 +                               } else {
19928 +                                       memset(old, 0, sizeof(*old));
19929 +                                       old = NULL;
19930 +                               }
19931 +                       }
19932 +               } else
19933 +                       ret = -ESRCH;
19934 +               break;
19935 +
19936 +       case NXA_TYPE_ANY:
19937 +               nxa = &nxi->v6;
19938 +               old = nxa->next;
19939 +               memset(nxa, 0, sizeof(*nxa));
19940 +               break;
19941 +
19942 +       default:
19943 +               ret = -EINVAL;
19944 +       }
19945 +       spin_unlock_irqrestore(&nxi->addr_lock, irqflags);
19946 +       __dealloc_nx_addr_v6_all(old);
19947 +       return ret;
19948 +}
19949 +
19950 +int vc_net_add_ipv6(struct nx_info *nxi, void __user *data)
19951 +{
19952 +       struct vcmd_net_addr_ipv6_v1 vc_data;
19953 +
19954 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19955 +               return -EFAULT;
19956 +
19957 +       switch (vc_data.type) {
19958 +       case NXA_TYPE_ADDR:
19959 +               memset(&vc_data.mask, ~0, sizeof(vc_data.mask));
19960 +               /* fallthrough */
19961 +       case NXA_TYPE_MASK:
19962 +               return do_add_v6_addr(nxi, &vc_data.ip, &vc_data.mask,
19963 +                       vc_data.prefix, vc_data.type, vc_data.flags);
19964 +       default:
19965 +               return -EINVAL;
19966 +       }
19967 +       return 0;
19968 +}
19969 +
19970 +int vc_net_remove_ipv6(struct nx_info *nxi, void __user *data)
19971 +{
19972 +       struct vcmd_net_addr_ipv6_v1 vc_data;
19973 +
19974 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
19975 +               return -EFAULT;
19976 +
19977 +       switch (vc_data.type) {
19978 +       case NXA_TYPE_ADDR:
19979 +               memset(&vc_data.mask, ~0, sizeof(vc_data.mask));
19980 +               /* fallthrough */
19981 +       case NXA_TYPE_MASK:
19982 +               return do_remove_v6_addr(nxi, &vc_data.ip, &vc_data.mask,
19983 +                       vc_data.prefix, vc_data.type, vc_data.flags);
19984 +       case NXA_TYPE_ANY:
19985 +               return do_remove_v6_addr(nxi, NULL, NULL, 0, vc_data.type, 0);
19986 +       default:
19987 +               return -EINVAL;
19988 +       }
19989 +       return 0;
19990 +}
19991 +
19992 +#endif /* CONFIG_IPV6 */
19993 +
19994 +
19995 +int vc_get_nflags(struct nx_info *nxi, void __user *data)
19996 +{
19997 +       struct vcmd_net_flags_v0 vc_data;
19998 +
19999 +       vc_data.flagword = nxi->nx_flags;
20000 +
20001 +       /* special STATE flag handling */
20002 +       vc_data.mask = vs_mask_flags(~0ULL, nxi->nx_flags, NXF_ONE_TIME);
20003 +
20004 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
20005 +               return -EFAULT;
20006 +       return 0;
20007 +}
20008 +
20009 +int vc_set_nflags(struct nx_info *nxi, void __user *data)
20010 +{
20011 +       struct vcmd_net_flags_v0 vc_data;
20012 +       uint64_t mask, trigger;
20013 +
20014 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
20015 +               return -EFAULT;
20016 +
20017 +       /* special STATE flag handling */
20018 +       mask = vs_mask_mask(vc_data.mask, nxi->nx_flags, NXF_ONE_TIME);
20019 +       trigger = (mask & nxi->nx_flags) ^ (mask & vc_data.flagword);
20020 +
20021 +       nxi->nx_flags = vs_mask_flags(nxi->nx_flags,
20022 +               vc_data.flagword, mask);
20023 +       if (trigger & NXF_PERSISTENT)
20024 +               nx_update_persistent(nxi);
20025 +
20026 +       return 0;
20027 +}
20028 +
20029 +int vc_get_ncaps(struct nx_info *nxi, void __user *data)
20030 +{
20031 +       struct vcmd_net_caps_v0 vc_data;
20032 +
20033 +       vc_data.ncaps = nxi->nx_ncaps;
20034 +       vc_data.cmask = ~0ULL;
20035 +
20036 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
20037 +               return -EFAULT;
20038 +       return 0;
20039 +}
20040 +
20041 +int vc_set_ncaps(struct nx_info *nxi, void __user *data)
20042 +{
20043 +       struct vcmd_net_caps_v0 vc_data;
20044 +
20045 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
20046 +               return -EFAULT;
20047 +
20048 +       nxi->nx_ncaps = vs_mask_flags(nxi->nx_ncaps,
20049 +               vc_data.ncaps, vc_data.cmask);
20050 +       return 0;
20051 +}
20052 +
20053 +
20054 +#include <linux/module.h>
20055 +
20056 +module_init(init_network);
20057 +
20058 +EXPORT_SYMBOL_GPL(free_nx_info);
20059 +EXPORT_SYMBOL_GPL(unhash_nx_info);
20060 +
20061 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/proc.c linux-4.9/kernel/vserver/proc.c
20062 --- linux-4.9/kernel/vserver/proc.c     1970-01-01 01:00:00.000000000 +0100
20063 +++ linux-4.9/kernel/vserver/proc.c     2021-02-24 15:47:45.124410596 +0100
20064 @@ -0,0 +1,1040 @@
20065 +/*
20066 + *  linux/kernel/vserver/proc.c
20067 + *
20068 + *  Virtual Context Support
20069 + *
20070 + *  Copyright (C) 2003-2011  Herbert P?tzl
20071 + *
20072 + *  V0.01  basic structure
20073 + *  V0.02  adaptation vs1.3.0
20074 + *  V0.03  proc permissions
20075 + *  V0.04  locking/generic
20076 + *  V0.05  next generation procfs
20077 + *  V0.06  inode validation
20078 + *  V0.07  generic rewrite vid
20079 + *  V0.08  remove inode type
20080 + *  V0.09  added u/wmask info
20081 + *
20082 + */
20083 +
20084 +#include <linux/proc_fs.h>
20085 +#include <linux/fs_struct.h>
20086 +#include <linux/mount.h>
20087 +#include <linux/namei.h>
20088 +#include <asm/unistd.h>
20089 +
20090 +#include <linux/vs_context.h>
20091 +#include <linux/vs_network.h>
20092 +#include <linux/vs_cvirt.h>
20093 +
20094 +#include <linux/in.h>
20095 +#include <linux/inetdevice.h>
20096 +#include <linux/vs_inet.h>
20097 +#include <linux/vs_inet6.h>
20098 +
20099 +#include <linux/vserver/global.h>
20100 +
20101 +#include "cvirt_proc.h"
20102 +#include "cacct_proc.h"
20103 +#include "limit_proc.h"
20104 +#include "sched_proc.h"
20105 +#include "vci_config.h"
20106 +
20107 +#include <../../fs/proc/internal.h>
20108 +
20109 +
20110 +static inline char *print_cap_t(char *buffer, kernel_cap_t *c)
20111 +{
20112 +       unsigned __capi;
20113 +
20114 +       CAP_FOR_EACH_U32(__capi) {
20115 +               buffer += sprintf(buffer, "%08x",
20116 +                       c->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
20117 +       }
20118 +       return buffer;
20119 +}
20120 +
20121 +
20122 +static struct proc_dir_entry *proc_virtual;
20123 +
20124 +static struct proc_dir_entry *proc_virtnet;
20125 +
20126 +
20127 +/* first the actual feeds */
20128 +
20129 +
20130 +static int proc_vci(char *buffer)
20131 +{
20132 +       return sprintf(buffer,
20133 +               "VCIVersion:\t%04x:%04x\n"
20134 +               "VCISyscall:\t%d\n"
20135 +               "VCIKernel:\t%08x\n",
20136 +               VCI_VERSION >> 16,
20137 +               VCI_VERSION & 0xFFFF,
20138 +               __NR_vserver,
20139 +               vci_kernel_config());
20140 +}
20141 +
20142 +static int proc_virtual_info(char *buffer)
20143 +{
20144 +       return proc_vci(buffer);
20145 +}
20146 +
20147 +static int proc_virtual_status(char *buffer)
20148 +{
20149 +       return sprintf(buffer,
20150 +               "#CTotal:\t%d\n"
20151 +               "#CActive:\t%d\n"
20152 +               "#NSProxy:\t%d\t%d %d %d %d %d %d\n"
20153 +               "#InitTask:\t%d\t%d %d\n",
20154 +               atomic_read(&vx_global_ctotal),
20155 +               atomic_read(&vx_global_cactive),
20156 +               atomic_read(&vs_global_nsproxy),
20157 +               atomic_read(&vs_global_fs),
20158 +               atomic_read(&vs_global_mnt_ns),
20159 +               atomic_read(&vs_global_uts_ns),
20160 +               atomic_read(&vs_global_ipc_ns),
20161 +               atomic_read(&vs_global_user_ns),
20162 +               atomic_read(&vs_global_pid_ns),
20163 +               atomic_read(&init_task.usage),
20164 +               atomic_read(&init_task.nsproxy->count),
20165 +               init_task.fs->users);
20166 +}
20167 +
20168 +
20169 +int proc_vxi_info(struct vx_info *vxi, char *buffer)
20170 +{
20171 +       int length;
20172 +
20173 +       length = sprintf(buffer,
20174 +               "ID:\t%d\n"
20175 +               "Info:\t%p\n"
20176 +               "Init:\t%d\n"
20177 +               "OOM:\t%lld\n",
20178 +               vxi->vx_id,
20179 +               vxi,
20180 +               vxi->vx_initpid,
20181 +               vxi->vx_badness_bias);
20182 +       return length;
20183 +}
20184 +
20185 +int proc_vxi_status(struct vx_info *vxi, char *buffer)
20186 +{
20187 +       char *orig = buffer;
20188 +
20189 +       buffer += sprintf(buffer,
20190 +               "UseCnt:\t%d\n"
20191 +               "Tasks:\t%d\n"
20192 +               "Flags:\t%016llx\n",
20193 +               atomic_read(&vxi->vx_usecnt),
20194 +               atomic_read(&vxi->vx_tasks),
20195 +               (unsigned long long)vxi->vx_flags);
20196 +
20197 +       buffer += sprintf(buffer, "BCaps:\t");
20198 +       buffer = print_cap_t(buffer, &vxi->vx_bcaps);
20199 +       buffer += sprintf(buffer, "\n");
20200 +
20201 +       buffer += sprintf(buffer,
20202 +               "CCaps:\t%016llx\n"
20203 +               "Umask:\t%16llx\n"
20204 +               "Wmask:\t%16llx\n"
20205 +               "Spaces:\t%08lx %08lx\n",
20206 +               (unsigned long long)vxi->vx_ccaps,
20207 +               (unsigned long long)vxi->vx_umask,
20208 +               (unsigned long long)vxi->vx_wmask,
20209 +               vxi->space[0].vx_nsmask, vxi->space[1].vx_nsmask);
20210 +       return buffer - orig;
20211 +}
20212 +
20213 +int proc_vxi_limit(struct vx_info *vxi, char *buffer)
20214 +{
20215 +       return vx_info_proc_limit(&vxi->limit, buffer);
20216 +}
20217 +
20218 +int proc_vxi_sched(struct vx_info *vxi, char *buffer)
20219 +{
20220 +       int cpu, length;
20221 +
20222 +       length = vx_info_proc_sched(&vxi->sched, buffer);
20223 +       for_each_online_cpu(cpu) {
20224 +               length += vx_info_proc_sched_pc(
20225 +                       &vx_per_cpu(vxi, sched_pc, cpu),
20226 +                       buffer + length, cpu);
20227 +       }
20228 +       return length;
20229 +}
20230 +
20231 +int proc_vxi_nsproxy0(struct vx_info *vxi, char *buffer)
20232 +{
20233 +       return vx_info_proc_nsproxy(vxi->space[0].vx_nsproxy, buffer);
20234 +}
20235 +
20236 +int proc_vxi_nsproxy1(struct vx_info *vxi, char *buffer)
20237 +{
20238 +       return vx_info_proc_nsproxy(vxi->space[1].vx_nsproxy, buffer);
20239 +}
20240 +
20241 +int proc_vxi_cvirt(struct vx_info *vxi, char *buffer)
20242 +{
20243 +       int cpu, length;
20244 +
20245 +       vx_update_load(vxi);
20246 +       length = vx_info_proc_cvirt(&vxi->cvirt, buffer);
20247 +       for_each_online_cpu(cpu) {
20248 +               length += vx_info_proc_cvirt_pc(
20249 +                       &vx_per_cpu(vxi, cvirt_pc, cpu),
20250 +                       buffer + length, cpu);
20251 +       }
20252 +       return length;
20253 +}
20254 +
20255 +int proc_vxi_cacct(struct vx_info *vxi, char *buffer)
20256 +{
20257 +       return vx_info_proc_cacct(&vxi->cacct, buffer);
20258 +}
20259 +
20260 +
20261 +static int proc_virtnet_info(char *buffer)
20262 +{
20263 +       return proc_vci(buffer);
20264 +}
20265 +
20266 +static int proc_virtnet_status(char *buffer)
20267 +{
20268 +       return sprintf(buffer,
20269 +               "#CTotal:\t%d\n"
20270 +               "#CActive:\t%d\n",
20271 +               atomic_read(&nx_global_ctotal),
20272 +               atomic_read(&nx_global_cactive));
20273 +}
20274 +
20275 +int proc_nxi_info(struct nx_info *nxi, char *buffer)
20276 +{
20277 +       struct nx_addr_v4 *v4a;
20278 +#ifdef CONFIG_IPV6
20279 +       struct nx_addr_v6 *v6a;
20280 +#endif
20281 +       int length, i;
20282 +
20283 +       length = sprintf(buffer,
20284 +               "ID:\t%d\n"
20285 +               "Info:\t%p\n"
20286 +               "Bcast:\t" NIPQUAD_FMT "\n"
20287 +               "Lback:\t" NIPQUAD_FMT "\n",
20288 +               nxi->nx_id,
20289 +               nxi,
20290 +               NIPQUAD(nxi->v4_bcast.s_addr),
20291 +               NIPQUAD(nxi->v4_lback.s_addr));
20292 +
20293 +       if (!NX_IPV4(nxi))
20294 +               goto skip_v4;
20295 +       for (i = 0, v4a = &nxi->v4; v4a; i++, v4a = v4a->next)
20296 +               length += sprintf(buffer + length, "%d:\t" NXAV4_FMT "\n",
20297 +                       i, NXAV4(v4a));
20298 +skip_v4:
20299 +#ifdef CONFIG_IPV6
20300 +       if (!NX_IPV6(nxi))
20301 +               goto skip_v6;
20302 +       for (i = 0, v6a = &nxi->v6; v6a; i++, v6a = v6a->next)
20303 +               length += sprintf(buffer + length, "%d:\t" NXAV6_FMT "\n",
20304 +                       i, NXAV6(v6a));
20305 +skip_v6:
20306 +#endif
20307 +       return length;
20308 +}
20309 +
20310 +int proc_nxi_status(struct nx_info *nxi, char *buffer)
20311 +{
20312 +       int length;
20313 +
20314 +       length = sprintf(buffer,
20315 +               "UseCnt:\t%d\n"
20316 +               "Tasks:\t%d\n"
20317 +               "Flags:\t%016llx\n"
20318 +               "NCaps:\t%016llx\n",
20319 +               atomic_read(&nxi->nx_usecnt),
20320 +               atomic_read(&nxi->nx_tasks),
20321 +               (unsigned long long)nxi->nx_flags,
20322 +               (unsigned long long)nxi->nx_ncaps);
20323 +       return length;
20324 +}
20325 +
20326 +
20327 +
20328 +/* here the inode helpers */
20329 +
20330 +struct vs_entry {
20331 +       int len;
20332 +       char *name;
20333 +       mode_t mode;
20334 +       struct inode_operations *iop;
20335 +       struct file_operations *fop;
20336 +       union proc_op op;
20337 +};
20338 +
20339 +static struct inode *vs_proc_make_inode(struct super_block *sb, struct vs_entry *p)
20340 +{
20341 +       struct inode *inode = new_inode(sb);
20342 +
20343 +       if (!inode)
20344 +               goto out;
20345 +
20346 +       inode->i_mode = p->mode;
20347 +       if (p->iop)
20348 +               inode->i_op = p->iop;
20349 +       if (p->fop)
20350 +               inode->i_fop = p->fop;
20351 +
20352 +       set_nlink(inode, (p->mode & S_IFDIR) ? 2 : 1);
20353 +       inode->i_flags |= S_IMMUTABLE;
20354 +
20355 +       inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
20356 +
20357 +       i_uid_write(inode, 0);
20358 +       i_gid_write(inode, 0);
20359 +       i_tag_write(inode, 0);
20360 +out:
20361 +       return inode;
20362 +}
20363 +
20364 +static struct dentry *vs_proc_instantiate(struct inode *dir,
20365 +       struct dentry *dentry, int id, void *ptr)
20366 +{
20367 +       struct vs_entry *p = ptr;
20368 +       struct inode *inode = vs_proc_make_inode(dir->i_sb, p);
20369 +       struct dentry *error = ERR_PTR(-EINVAL);
20370 +
20371 +       if (!inode)
20372 +               goto out;
20373 +
20374 +       PROC_I(inode)->op = p->op;
20375 +       PROC_I(inode)->fd = id;
20376 +       d_add(dentry, inode);
20377 +       error = NULL;
20378 +out:
20379 +       return error;
20380 +}
20381 +
20382 +/* Lookups */
20383 +
20384 +typedef struct dentry *vx_instantiate_t(struct inode *, struct dentry *, int, void *);
20385 +
20386 +
20387 +/*
20388 + * Fill a directory entry.
20389 + *
20390 + * If possible create the dcache entry and derive our inode number and
20391 + * file type from dcache entry.
20392 + *
20393 + * Since all of the proc inode numbers are dynamically generated, the inode
20394 + * numbers do not exist until the inode is cache.  This means creating the
20395 + * the dcache entry in iterate is necessary to keep the inode numbers
20396 + * reported by iterate in sync with the inode numbers reported
20397 + * by stat.
20398 + */
20399 +static int vx_proc_fill_cache(struct file *filp, struct dir_context *ctx,
20400 +       char *name, int len, vx_instantiate_t instantiate, int id, void *ptr)
20401 +{
20402 +       struct dentry *child, *dir = filp->f_path.dentry;
20403 +       struct inode *inode;
20404 +       struct qstr qname;
20405 +       ino_t ino = 0;
20406 +       unsigned type = DT_UNKNOWN;
20407 +
20408 +       qname.name = name;
20409 +       qname.len  = len;
20410 +       qname.hash = full_name_hash(NULL, name, len);
20411 +
20412 +       child = d_lookup(dir, &qname);
20413 +       if (!child) {
20414 +               struct dentry *new;
20415 +               new = d_alloc(dir, &qname);
20416 +               if (new) {
20417 +                       child = instantiate(dir->d_inode, new, id, ptr);
20418 +                       if (child)
20419 +                               dput(new);
20420 +                       else
20421 +                               child = new;
20422 +               }
20423 +       }
20424 +       if (!child || IS_ERR(child) || !child->d_inode)
20425 +               goto end_instantiate;
20426 +       inode = child->d_inode;
20427 +       if (inode) {
20428 +               ino = inode->i_ino;
20429 +               type = inode->i_mode >> 12;
20430 +       }
20431 +       dput(child);
20432 +end_instantiate:
20433 +       if (!ino)
20434 +               ino = 1;
20435 +       return !dir_emit(ctx, name, len, ino, type);
20436 +}
20437 +
20438 +
20439 +
20440 +/* get and revalidate vx_info/xid */
20441 +
20442 +static inline
20443 +struct vx_info *get_proc_vx_info(struct inode *inode)
20444 +{
20445 +       return lookup_vx_info(PROC_I(inode)->fd);
20446 +}
20447 +
20448 +static int proc_xid_revalidate(struct dentry *dentry, unsigned int flags)
20449 +{
20450 +       struct inode *inode = dentry->d_inode;
20451 +       vxid_t xid = PROC_I(inode)->fd;
20452 +
20453 +       if (flags & LOOKUP_RCU) /* FIXME: can be dropped? */
20454 +               return -ECHILD;
20455 +
20456 +       if (!xid || xid_is_hashed(xid))
20457 +               return 1;
20458 +       d_drop(dentry);
20459 +       return 0;
20460 +}
20461 +
20462 +
20463 +/* get and revalidate nx_info/nid */
20464 +
20465 +static int proc_nid_revalidate(struct dentry *dentry, unsigned int flags)
20466 +{
20467 +       struct inode *inode = dentry->d_inode;
20468 +       vnid_t nid = PROC_I(inode)->fd;
20469 +
20470 +       if (flags & LOOKUP_RCU) /* FIXME: can be dropped? */
20471 +               return -ECHILD;
20472 +
20473 +       if (!nid || nid_is_hashed(nid))
20474 +               return 1;
20475 +       d_drop(dentry);
20476 +       return 0;
20477 +}
20478 +
20479 +
20480 +
20481 +#define PROC_BLOCK_SIZE (PAGE_SIZE - 1024)
20482 +
20483 +static ssize_t proc_vs_info_read(struct file *file, char __user *buf,
20484 +                         size_t count, loff_t *ppos)
20485 +{
20486 +       struct inode *inode = file->f_path.dentry->d_inode;
20487 +       unsigned long page;
20488 +       ssize_t length = 0;
20489 +
20490 +       if (count > PROC_BLOCK_SIZE)
20491 +               count = PROC_BLOCK_SIZE;
20492 +
20493 +       /* fade that out as soon as stable */
20494 +       WARN_ON(PROC_I(inode)->fd);
20495 +
20496 +       if (!(page = __get_free_page(GFP_KERNEL)))
20497 +               return -ENOMEM;
20498 +
20499 +       BUG_ON(!PROC_I(inode)->op.proc_vs_read);
20500 +       length = PROC_I(inode)->op.proc_vs_read((char *)page);
20501 +
20502 +       if (length >= 0)
20503 +               length = simple_read_from_buffer(buf, count, ppos,
20504 +                       (char *)page, length);
20505 +
20506 +       free_page(page);
20507 +       return length;
20508 +}
20509 +
20510 +static ssize_t proc_vx_info_read(struct file *file, char __user *buf,
20511 +                         size_t count, loff_t *ppos)
20512 +{
20513 +       struct inode *inode = file->f_path.dentry->d_inode;
20514 +       struct vx_info *vxi = NULL;
20515 +       vxid_t xid = PROC_I(inode)->fd;
20516 +       unsigned long page;
20517 +       ssize_t length = 0;
20518 +
20519 +       if (count > PROC_BLOCK_SIZE)
20520 +               count = PROC_BLOCK_SIZE;
20521 +
20522 +       /* fade that out as soon as stable */
20523 +       WARN_ON(!xid);
20524 +       vxi = lookup_vx_info(xid);
20525 +       if (!vxi)
20526 +               goto out;
20527 +
20528 +       length = -ENOMEM;
20529 +       if (!(page = __get_free_page(GFP_KERNEL)))
20530 +               goto out_put;
20531 +
20532 +       BUG_ON(!PROC_I(inode)->op.proc_vxi_read);
20533 +       length = PROC_I(inode)->op.proc_vxi_read(vxi, (char *)page);
20534 +
20535 +       if (length >= 0)
20536 +               length = simple_read_from_buffer(buf, count, ppos,
20537 +                       (char *)page, length);
20538 +
20539 +       free_page(page);
20540 +out_put:
20541 +       put_vx_info(vxi);
20542 +out:
20543 +       return length;
20544 +}
20545 +
20546 +static ssize_t proc_nx_info_read(struct file *file, char __user *buf,
20547 +                         size_t count, loff_t *ppos)
20548 +{
20549 +       struct inode *inode = file->f_path.dentry->d_inode;
20550 +       struct nx_info *nxi = NULL;
20551 +       vnid_t nid = PROC_I(inode)->fd;
20552 +       unsigned long page;
20553 +       ssize_t length = 0;
20554 +
20555 +       if (count > PROC_BLOCK_SIZE)
20556 +               count = PROC_BLOCK_SIZE;
20557 +
20558 +       /* fade that out as soon as stable */
20559 +       WARN_ON(!nid);
20560 +       nxi = lookup_nx_info(nid);
20561 +       if (!nxi)
20562 +               goto out;
20563 +
20564 +       length = -ENOMEM;
20565 +       if (!(page = __get_free_page(GFP_KERNEL)))
20566 +               goto out_put;
20567 +
20568 +       BUG_ON(!PROC_I(inode)->op.proc_nxi_read);
20569 +       length = PROC_I(inode)->op.proc_nxi_read(nxi, (char *)page);
20570 +
20571 +       if (length >= 0)
20572 +               length = simple_read_from_buffer(buf, count, ppos,
20573 +                       (char *)page, length);
20574 +
20575 +       free_page(page);
20576 +out_put:
20577 +       put_nx_info(nxi);
20578 +out:
20579 +       return length;
20580 +}
20581 +
20582 +
20583 +
20584 +/* here comes the lower level */
20585 +
20586 +
20587 +#define NOD(NAME, MODE, IOP, FOP, OP) {        \
20588 +       .len  = sizeof(NAME) - 1,       \
20589 +       .name = (NAME),                 \
20590 +       .mode = MODE,                   \
20591 +       .iop  = IOP,                    \
20592 +       .fop  = FOP,                    \
20593 +       .op   = OP,                     \
20594 +}
20595 +
20596 +
20597 +#define DIR(NAME, MODE, OTYPE)                         \
20598 +       NOD(NAME, (S_IFDIR | (MODE)),                   \
20599 +               &proc_ ## OTYPE ## _inode_operations,   \
20600 +               &proc_ ## OTYPE ## _file_operations, { } )
20601 +
20602 +#define INF(NAME, MODE, OTYPE)                         \
20603 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20604 +               &proc_vs_info_file_operations,          \
20605 +               { .proc_vs_read = &proc_##OTYPE } )
20606 +
20607 +#define VINF(NAME, MODE, OTYPE)                                \
20608 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20609 +               &proc_vx_info_file_operations,          \
20610 +               { .proc_vxi_read = &proc_##OTYPE } )
20611 +
20612 +#define NINF(NAME, MODE, OTYPE)                                \
20613 +       NOD(NAME, (S_IFREG | (MODE)), NULL,             \
20614 +               &proc_nx_info_file_operations,          \
20615 +               { .proc_nxi_read = &proc_##OTYPE } )
20616 +
20617 +
20618 +static struct file_operations proc_vs_info_file_operations = {
20619 +       .read =         proc_vs_info_read,
20620 +};
20621 +
20622 +static struct file_operations proc_vx_info_file_operations = {
20623 +       .read =         proc_vx_info_read,
20624 +};
20625 +
20626 +static struct dentry_operations proc_xid_dentry_operations = {
20627 +       .d_revalidate = proc_xid_revalidate,
20628 +};
20629 +
20630 +static struct vs_entry vx_base_stuff[] = {
20631 +       VINF("info",    S_IRUGO, vxi_info),
20632 +       VINF("status",  S_IRUGO, vxi_status),
20633 +       VINF("limit",   S_IRUGO, vxi_limit),
20634 +       VINF("sched",   S_IRUGO, vxi_sched),
20635 +       VINF("nsproxy", S_IRUGO, vxi_nsproxy0),
20636 +       VINF("nsproxy1",S_IRUGO, vxi_nsproxy1),
20637 +       VINF("cvirt",   S_IRUGO, vxi_cvirt),
20638 +       VINF("cacct",   S_IRUGO, vxi_cacct),
20639 +       {}
20640 +};
20641 +
20642 +
20643 +
20644 +
20645 +static struct dentry *proc_xid_instantiate(struct inode *dir,
20646 +       struct dentry *dentry, int id, void *ptr)
20647 +{
20648 +       dentry->d_op = &proc_xid_dentry_operations;
20649 +       return vs_proc_instantiate(dir, dentry, id, ptr);
20650 +}
20651 +
20652 +static struct dentry *proc_xid_lookup(struct inode *dir,
20653 +       struct dentry *dentry, unsigned int flags)
20654 +{
20655 +       struct vs_entry *p = vx_base_stuff;
20656 +       struct dentry *error = ERR_PTR(-ENOENT);
20657 +
20658 +       for (; p->name; p++) {
20659 +               if (p->len != dentry->d_name.len)
20660 +                       continue;
20661 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20662 +                       break;
20663 +       }
20664 +       if (!p->name)
20665 +               goto out;
20666 +
20667 +       error = proc_xid_instantiate(dir, dentry, PROC_I(dir)->fd, p);
20668 +out:
20669 +       return error;
20670 +}
20671 +
20672 +static int proc_xid_iterate(struct file *filp, struct dir_context *ctx)
20673 +{
20674 +       struct dentry *dentry = filp->f_path.dentry;
20675 +       struct inode *inode = dentry->d_inode;
20676 +       struct vs_entry *p = vx_base_stuff;
20677 +       int size = sizeof(vx_base_stuff) / sizeof(struct vs_entry);
20678 +       int index;
20679 +
20680 +       if (!dir_emit_dots(filp, ctx))
20681 +               return 0;
20682 +
20683 +       index = ctx->pos - 2;
20684 +       if (index < size) {
20685 +               for (p += index; p->name; p++) {
20686 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20687 +                               vs_proc_instantiate, PROC_I(inode)->fd, p))
20688 +                               return 0;
20689 +                       ctx->pos++;
20690 +               }
20691 +       }
20692 +       return 1;
20693 +}
20694 +
20695 +
20696 +
20697 +static struct file_operations proc_nx_info_file_operations = {
20698 +       .read =         proc_nx_info_read,
20699 +};
20700 +
20701 +static struct dentry_operations proc_nid_dentry_operations = {
20702 +       .d_revalidate = proc_nid_revalidate,
20703 +};
20704 +
20705 +static struct vs_entry nx_base_stuff[] = {
20706 +       NINF("info",    S_IRUGO, nxi_info),
20707 +       NINF("status",  S_IRUGO, nxi_status),
20708 +       {}
20709 +};
20710 +
20711 +
20712 +static struct dentry *proc_nid_instantiate(struct inode *dir,
20713 +       struct dentry *dentry, int id, void *ptr)
20714 +{
20715 +       dentry->d_op = &proc_nid_dentry_operations;
20716 +       return vs_proc_instantiate(dir, dentry, id, ptr);
20717 +}
20718 +
20719 +static struct dentry *proc_nid_lookup(struct inode *dir,
20720 +       struct dentry *dentry, unsigned int flags)
20721 +{
20722 +       struct vs_entry *p = nx_base_stuff;
20723 +       struct dentry *error = ERR_PTR(-ENOENT);
20724 +
20725 +       for (; p->name; p++) {
20726 +               if (p->len != dentry->d_name.len)
20727 +                       continue;
20728 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20729 +                       break;
20730 +       }
20731 +       if (!p->name)
20732 +               goto out;
20733 +
20734 +       error = proc_nid_instantiate(dir, dentry, PROC_I(dir)->fd, p);
20735 +out:
20736 +       return error;
20737 +}
20738 +
20739 +static int proc_nid_iterate(struct file *filp, struct dir_context *ctx)
20740 +{
20741 +       struct dentry *dentry = filp->f_path.dentry;
20742 +       struct inode *inode = dentry->d_inode;
20743 +       struct vs_entry *p = nx_base_stuff;
20744 +       int size = sizeof(nx_base_stuff) / sizeof(struct vs_entry);
20745 +       int index;
20746 +
20747 +       if (!dir_emit_dots(filp, ctx))
20748 +               return 0;
20749 +
20750 +       index = ctx->pos - 2;
20751 +       if (index < size) {
20752 +               for (p += index; p->name; p++) {
20753 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20754 +                               vs_proc_instantiate, PROC_I(inode)->fd, p))
20755 +                               return 0;
20756 +                       ctx->pos++;
20757 +               }
20758 +       }
20759 +       return 1;
20760 +}
20761 +
20762 +
20763 +#define MAX_MULBY10    ((~0U - 9) / 10)
20764 +
20765 +static inline int atovid(const char *str, int len)
20766 +{
20767 +       int vid, c;
20768 +
20769 +       vid = 0;
20770 +       while (len-- > 0) {
20771 +               c = *str - '0';
20772 +               str++;
20773 +               if (c > 9)
20774 +                       return -1;
20775 +               if (vid >= MAX_MULBY10)
20776 +                       return -1;
20777 +               vid *= 10;
20778 +               vid += c;
20779 +               if (!vid)
20780 +                       return -1;
20781 +       }
20782 +       return vid;
20783 +}
20784 +
20785 +/* now the upper level (virtual) */
20786 +
20787 +
20788 +static struct file_operations proc_xid_file_operations = {
20789 +       .read =         generic_read_dir,
20790 +       .iterate =      proc_xid_iterate,
20791 +};
20792 +
20793 +static struct inode_operations proc_xid_inode_operations = {
20794 +       .lookup =       proc_xid_lookup,
20795 +};
20796 +
20797 +static struct vs_entry vx_virtual_stuff[] = {
20798 +       INF("info",     S_IRUGO, virtual_info),
20799 +       INF("status",   S_IRUGO, virtual_status),
20800 +       DIR(NULL,       S_IRUGO | S_IXUGO, xid),
20801 +};
20802 +
20803 +
20804 +static struct dentry *proc_virtual_lookup(struct inode *dir,
20805 +       struct dentry *dentry, unsigned int flags)
20806 +{
20807 +       struct vs_entry *p = vx_virtual_stuff;
20808 +       struct dentry *error = ERR_PTR(-ENOENT);
20809 +       int id = 0;
20810 +
20811 +       for (; p->name; p++) {
20812 +               if (p->len != dentry->d_name.len)
20813 +                       continue;
20814 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20815 +                       break;
20816 +       }
20817 +       if (p->name)
20818 +               goto instantiate;
20819 +
20820 +       id = atovid(dentry->d_name.name, dentry->d_name.len);
20821 +       if ((id < 0) || !xid_is_hashed(id))
20822 +               goto out;
20823 +
20824 +instantiate:
20825 +       error = proc_xid_instantiate(dir, dentry, id, p);
20826 +out:
20827 +       return error;
20828 +}
20829 +
20830 +static struct file_operations proc_nid_file_operations = {
20831 +       .read =         generic_read_dir,
20832 +       .iterate =      proc_nid_iterate,
20833 +};
20834 +
20835 +static struct inode_operations proc_nid_inode_operations = {
20836 +       .lookup =       proc_nid_lookup,
20837 +};
20838 +
20839 +static struct vs_entry nx_virtnet_stuff[] = {
20840 +       INF("info",     S_IRUGO, virtnet_info),
20841 +       INF("status",   S_IRUGO, virtnet_status),
20842 +       DIR(NULL,       S_IRUGO | S_IXUGO, nid),
20843 +};
20844 +
20845 +
20846 +static struct dentry *proc_virtnet_lookup(struct inode *dir,
20847 +       struct dentry *dentry, unsigned int flags)
20848 +{
20849 +       struct vs_entry *p = nx_virtnet_stuff;
20850 +       struct dentry *error = ERR_PTR(-ENOENT);
20851 +       int id = 0;
20852 +
20853 +       for (; p->name; p++) {
20854 +               if (p->len != dentry->d_name.len)
20855 +                       continue;
20856 +               if (!memcmp(dentry->d_name.name, p->name, p->len))
20857 +                       break;
20858 +       }
20859 +       if (p->name)
20860 +               goto instantiate;
20861 +
20862 +       id = atovid(dentry->d_name.name, dentry->d_name.len);
20863 +       if ((id < 0) || !nid_is_hashed(id))
20864 +               goto out;
20865 +
20866 +instantiate:
20867 +       error = proc_nid_instantiate(dir, dentry, id, p);
20868 +out:
20869 +       return error;
20870 +}
20871 +
20872 +
20873 +#define PROC_MAXVIDS 32
20874 +
20875 +int proc_virtual_iterate(struct file *filp, struct dir_context *ctx)
20876 +{
20877 +       struct vs_entry *p = vx_virtual_stuff;
20878 +       int size = sizeof(vx_virtual_stuff) / sizeof(struct vs_entry);
20879 +       int index;
20880 +       unsigned int xid_array[PROC_MAXVIDS];
20881 +       char buf[PROC_NUMBUF];
20882 +       unsigned int nr_xids, i;
20883 +
20884 +       if (!dir_emit_dots(filp, ctx))
20885 +               return 0;
20886 +
20887 +       index = ctx->pos - 2;
20888 +       if (index < size) {
20889 +               for (p += index; p->name; p++) {
20890 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20891 +                               vs_proc_instantiate, 0, p))
20892 +                               return 0;
20893 +                       ctx->pos++;
20894 +               }
20895 +       }
20896 +
20897 +       index = ctx->pos - size;
20898 +       p = &vx_virtual_stuff[size - 1];
20899 +       nr_xids = get_xid_list(index, xid_array, PROC_MAXVIDS);
20900 +       for (i = 0; i < nr_xids; i++) {
20901 +               int n, xid = xid_array[i];
20902 +               unsigned int j = PROC_NUMBUF;
20903 +
20904 +               n = xid;
20905 +               do
20906 +                       buf[--j] = '0' + (n % 10);
20907 +               while (n /= 10);
20908 +
20909 +               if (vx_proc_fill_cache(filp, ctx,
20910 +                       buf + j, PROC_NUMBUF - j,
20911 +                       vs_proc_instantiate, xid, p))
20912 +                       return 0;
20913 +               ctx->pos++;
20914 +       }
20915 +       return 0;
20916 +}
20917 +
20918 +static int proc_virtual_getattr(struct vfsmount *mnt,
20919 +       struct dentry *dentry, struct kstat *stat)
20920 +{
20921 +       struct inode *inode = dentry->d_inode;
20922 +
20923 +       generic_fillattr(inode, stat);
20924 +       stat->nlink = 2 + atomic_read(&vx_global_cactive);
20925 +       return 0;
20926 +}
20927 +
20928 +static struct file_operations proc_virtual_dir_operations = {
20929 +       .read =         generic_read_dir,
20930 +       .iterate =      proc_virtual_iterate,
20931 +};
20932 +
20933 +static struct inode_operations proc_virtual_dir_inode_operations = {
20934 +       .getattr =      proc_virtual_getattr,
20935 +       .lookup =       proc_virtual_lookup,
20936 +};
20937 +
20938 +
20939 +
20940 +int proc_virtnet_iterate(struct file *filp, struct dir_context *ctx)
20941 +{
20942 +       struct vs_entry *p = nx_virtnet_stuff;
20943 +       int size = sizeof(nx_virtnet_stuff) / sizeof(struct vs_entry);
20944 +       int index;
20945 +       unsigned int nid_array[PROC_MAXVIDS];
20946 +       char buf[PROC_NUMBUF];
20947 +       unsigned int nr_nids, i;
20948 +
20949 +       if (!dir_emit_dots(filp, ctx))
20950 +               return 0;
20951 +
20952 +       index = ctx->pos - 2;
20953 +       if (index < size) {
20954 +               for (p += index; p->name; p++) {
20955 +                       if (vx_proc_fill_cache(filp, ctx, p->name, p->len,
20956 +                               vs_proc_instantiate, 0, p))
20957 +                               return 0;
20958 +                       ctx->pos++;
20959 +               }
20960 +       }
20961 +
20962 +       index = ctx->pos - size;
20963 +       p = &nx_virtnet_stuff[size - 1];
20964 +       nr_nids = get_nid_list(index, nid_array, PROC_MAXVIDS);
20965 +       for (i = 0; i < nr_nids; i++) {
20966 +               int n, nid = nid_array[i];
20967 +               unsigned int j = PROC_NUMBUF;
20968 +
20969 +               n = nid;
20970 +               do
20971 +                       buf[--j] = '0' + (n % 10);
20972 +               while (n /= 10);
20973 +
20974 +               if (vx_proc_fill_cache(filp, ctx,
20975 +                       buf + j, PROC_NUMBUF - j,
20976 +                       vs_proc_instantiate, nid, p))
20977 +                       return 0;
20978 +               ctx->pos++;
20979 +       }
20980 +       return 0;
20981 +}
20982 +
20983 +static int proc_virtnet_getattr(struct vfsmount *mnt,
20984 +       struct dentry *dentry, struct kstat *stat)
20985 +{
20986 +       struct inode *inode = dentry->d_inode;
20987 +
20988 +       generic_fillattr(inode, stat);
20989 +       stat->nlink = 2 + atomic_read(&nx_global_cactive);
20990 +       return 0;
20991 +}
20992 +
20993 +static struct file_operations proc_virtnet_dir_operations = {
20994 +       .read =         generic_read_dir,
20995 +       .iterate =      proc_virtnet_iterate,
20996 +};
20997 +
20998 +static struct inode_operations proc_virtnet_dir_inode_operations = {
20999 +       .getattr =      proc_virtnet_getattr,
21000 +       .lookup =       proc_virtnet_lookup,
21001 +};
21002 +
21003 +
21004 +
21005 +void proc_vx_init(void)
21006 +{
21007 +       struct proc_dir_entry *ent;
21008 +
21009 +       ent = proc_mkdir("virtual", 0);
21010 +       if (ent) {
21011 +               ent->proc_fops = &proc_virtual_dir_operations;
21012 +               ent->proc_iops = &proc_virtual_dir_inode_operations;
21013 +       }
21014 +       proc_virtual = ent;
21015 +
21016 +       ent = proc_mkdir("virtnet", 0);
21017 +       if (ent) {
21018 +               ent->proc_fops = &proc_virtnet_dir_operations;
21019 +               ent->proc_iops = &proc_virtnet_dir_inode_operations;
21020 +       }
21021 +       proc_virtnet = ent;
21022 +}
21023 +
21024 +
21025 +
21026 +
21027 +/* per pid info */
21028 +
21029 +void render_cap_t(struct seq_file *, const char *,
21030 +       struct vx_info *, kernel_cap_t *);
21031 +
21032 +
21033 +int proc_pid_vx_info(
21034 +       struct seq_file *m,
21035 +       struct pid_namespace *ns,
21036 +       struct pid *pid,
21037 +       struct task_struct *p)
21038 +{
21039 +       struct vx_info *vxi;
21040 +
21041 +       seq_printf(m, "XID:\t%d\n", vx_task_xid(p));
21042 +
21043 +       vxi = task_get_vx_info(p);
21044 +       if (!vxi)
21045 +               return 0;
21046 +
21047 +       render_cap_t(m, "BCaps:\t", vxi, &vxi->vx_bcaps);
21048 +       seq_printf(m, "CCaps:\t%016llx\n",
21049 +               (unsigned long long)vxi->vx_ccaps);
21050 +       seq_printf(m, "CFlags:\t%016llx\n",
21051 +               (unsigned long long)vxi->vx_flags);
21052 +       seq_printf(m, "CIPid:\t%d\n", vxi->vx_initpid);
21053 +
21054 +       put_vx_info(vxi);
21055 +       return 0;
21056 +}
21057 +
21058 +
21059 +int proc_pid_nx_info(
21060 +       struct seq_file *m,
21061 +       struct pid_namespace *ns,
21062 +       struct pid *pid,
21063 +       struct task_struct *p)
21064 +{
21065 +       struct nx_info *nxi;
21066 +       struct nx_addr_v4 *v4a;
21067 +#ifdef CONFIG_IPV6
21068 +       struct nx_addr_v6 *v6a;
21069 +#endif
21070 +       int i;
21071 +
21072 +       seq_printf(m, "NID:\t%d\n", nx_task_nid(p));
21073 +
21074 +       nxi = task_get_nx_info(p);
21075 +       if (!nxi)
21076 +               return 0;
21077 +
21078 +       seq_printf(m, "NCaps:\t%016llx\n",
21079 +               (unsigned long long)nxi->nx_ncaps);
21080 +       seq_printf(m, "NFlags:\t%016llx\n",
21081 +               (unsigned long long)nxi->nx_flags);
21082 +
21083 +       seq_printf(m, "V4Root[bcast]:\t" NIPQUAD_FMT "\n",
21084 +               NIPQUAD(nxi->v4_bcast.s_addr));
21085 +       seq_printf(m, "V4Root[lback]:\t" NIPQUAD_FMT "\n",
21086 +               NIPQUAD(nxi->v4_lback.s_addr));
21087 +       if (!NX_IPV4(nxi))
21088 +               goto skip_v4;
21089 +       for (i = 0, v4a = &nxi->v4; v4a; i++, v4a = v4a->next)
21090 +               seq_printf(m, "V4Root[%d]:\t" NXAV4_FMT "\n",
21091 +                       i, NXAV4(v4a));
21092 +skip_v4:
21093 +#ifdef CONFIG_IPV6
21094 +       if (!NX_IPV6(nxi))
21095 +               goto skip_v6;
21096 +       for (i = 0, v6a = &nxi->v6; v6a; i++, v6a = v6a->next)
21097 +               seq_printf(m, "V6Root[%d]:\t" NXAV6_FMT "\n",
21098 +                       i, NXAV6(v6a));
21099 +skip_v6:
21100 +#endif
21101 +       put_nx_info(nxi);
21102 +       return 0;
21103 +}
21104 +
21105 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/sched.c linux-4.9/kernel/vserver/sched.c
21106 --- linux-4.9/kernel/vserver/sched.c    1970-01-01 01:00:00.000000000 +0100
21107 +++ linux-4.9/kernel/vserver/sched.c    2021-02-24 15:47:45.124410596 +0100
21108 @@ -0,0 +1,83 @@
21109 +/*
21110 + *  linux/kernel/vserver/sched.c
21111 + *
21112 + *  Virtual Server: Scheduler Support
21113 + *
21114 + *  Copyright (C) 2004-2010  Herbert P?tzl
21115 + *
21116 + *  V0.01  adapted Sam Vilains version to 2.6.3
21117 + *  V0.02  removed legacy interface
21118 + *  V0.03  changed vcmds to vxi arg
21119 + *  V0.04  removed older and legacy interfaces
21120 + *  V0.05  removed scheduler code/commands
21121 + *
21122 + */
21123 +
21124 +#include <linux/vs_context.h>
21125 +#include <linux/vs_sched.h>
21126 +#include <linux/cpumask.h>
21127 +#include <linux/vserver/sched_cmd.h>
21128 +
21129 +#include <asm/uaccess.h>
21130 +
21131 +
21132 +void vx_update_sched_param(struct _vx_sched *sched,
21133 +       struct _vx_sched_pc *sched_pc)
21134 +{
21135 +       sched_pc->prio_bias = sched->prio_bias;
21136 +}
21137 +
21138 +static int do_set_prio_bias(struct vx_info *vxi, struct vcmd_prio_bias *data)
21139 +{
21140 +       int cpu;
21141 +
21142 +       if (data->prio_bias > MAX_PRIO_BIAS)
21143 +               data->prio_bias = MAX_PRIO_BIAS;
21144 +       if (data->prio_bias < MIN_PRIO_BIAS)
21145 +               data->prio_bias = MIN_PRIO_BIAS;
21146 +
21147 +       if (data->cpu_id != ~0) {
21148 +               vxi->sched.update = *get_cpu_mask(data->cpu_id);
21149 +               cpumask_and(&vxi->sched.update, &vxi->sched.update,
21150 +                       cpu_online_mask);
21151 +       } else
21152 +               cpumask_copy(&vxi->sched.update, cpu_online_mask);
21153 +
21154 +       for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)vxi->sched.update)
21155 +               vx_update_sched_param(&vxi->sched,
21156 +                       &vx_per_cpu(vxi, sched_pc, cpu));
21157 +       return 0;
21158 +}
21159 +
21160 +int vc_set_prio_bias(struct vx_info *vxi, void __user *data)
21161 +{
21162 +       struct vcmd_prio_bias vc_data;
21163 +
21164 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21165 +               return -EFAULT;
21166 +
21167 +       return do_set_prio_bias(vxi, &vc_data);
21168 +}
21169 +
21170 +int vc_get_prio_bias(struct vx_info *vxi, void __user *data)
21171 +{
21172 +       struct vcmd_prio_bias vc_data;
21173 +       struct _vx_sched_pc *pcd;
21174 +       int cpu;
21175 +
21176 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21177 +               return -EFAULT;
21178 +
21179 +       cpu = vc_data.cpu_id;
21180 +
21181 +       if (!cpu_possible(cpu))
21182 +               return -EINVAL;
21183 +
21184 +       pcd = &vx_per_cpu(vxi, sched_pc, cpu);
21185 +       vc_data.prio_bias = pcd->prio_bias;
21186 +
21187 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
21188 +               return -EFAULT;
21189 +       return 0;
21190 +}
21191 +
21192 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/sched_init.h linux-4.9/kernel/vserver/sched_init.h
21193 --- linux-4.9/kernel/vserver/sched_init.h       1970-01-01 01:00:00.000000000 +0100
21194 +++ linux-4.9/kernel/vserver/sched_init.h       2021-02-24 15:47:45.124410596 +0100
21195 @@ -0,0 +1,27 @@
21196 +
21197 +static inline void vx_info_init_sched(struct _vx_sched *sched)
21198 +{
21199 +       /* scheduling; hard code starting values as constants */
21200 +       sched->prio_bias = 0;
21201 +}
21202 +
21203 +static inline
21204 +void vx_info_init_sched_pc(struct _vx_sched_pc *sched_pc, int cpu)
21205 +{
21206 +       sched_pc->prio_bias = 0;
21207 +
21208 +       sched_pc->user_ticks = 0;
21209 +       sched_pc->sys_ticks = 0;
21210 +       sched_pc->hold_ticks = 0;
21211 +}
21212 +
21213 +static inline void vx_info_exit_sched(struct _vx_sched *sched)
21214 +{
21215 +       return;
21216 +}
21217 +
21218 +static inline
21219 +void vx_info_exit_sched_pc(struct _vx_sched_pc *sched_pc, int cpu)
21220 +{
21221 +       return;
21222 +}
21223 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/sched_proc.h linux-4.9/kernel/vserver/sched_proc.h
21224 --- linux-4.9/kernel/vserver/sched_proc.h       1970-01-01 01:00:00.000000000 +0100
21225 +++ linux-4.9/kernel/vserver/sched_proc.h       2021-02-24 15:47:45.124410596 +0100
21226 @@ -0,0 +1,32 @@
21227 +#ifndef _VX_SCHED_PROC_H
21228 +#define _VX_SCHED_PROC_H
21229 +
21230 +
21231 +static inline
21232 +int vx_info_proc_sched(struct _vx_sched *sched, char *buffer)
21233 +{
21234 +       int length = 0;
21235 +
21236 +       length += sprintf(buffer,
21237 +               "PrioBias:\t%8d\n",
21238 +               sched->prio_bias);
21239 +       return length;
21240 +}
21241 +
21242 +static inline
21243 +int vx_info_proc_sched_pc(struct _vx_sched_pc *sched_pc,
21244 +       char *buffer, int cpu)
21245 +{
21246 +       int length = 0;
21247 +
21248 +       length += sprintf(buffer + length,
21249 +               "cpu %d: %lld %lld %lld", cpu,
21250 +               (unsigned long long)sched_pc->user_ticks,
21251 +               (unsigned long long)sched_pc->sys_ticks,
21252 +               (unsigned long long)sched_pc->hold_ticks);
21253 +       length += sprintf(buffer + length,
21254 +               " %d\n", sched_pc->prio_bias);
21255 +       return length;
21256 +}
21257 +
21258 +#endif /* _VX_SCHED_PROC_H */
21259 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/signal.c linux-4.9/kernel/vserver/signal.c
21260 --- linux-4.9/kernel/vserver/signal.c   1970-01-01 01:00:00.000000000 +0100
21261 +++ linux-4.9/kernel/vserver/signal.c   2021-02-24 15:47:45.124410596 +0100
21262 @@ -0,0 +1,134 @@
21263 +/*
21264 + *  linux/kernel/vserver/signal.c
21265 + *
21266 + *  Virtual Server: Signal Support
21267 + *
21268 + *  Copyright (C) 2003-2007  Herbert P?tzl
21269 + *
21270 + *  V0.01  broken out from vcontext V0.05
21271 + *  V0.02  changed vcmds to vxi arg
21272 + *  V0.03  adjusted siginfo for kill
21273 + *
21274 + */
21275 +
21276 +#include <asm/uaccess.h>
21277 +
21278 +#include <linux/vs_context.h>
21279 +#include <linux/vs_pid.h>
21280 +#include <linux/vserver/signal_cmd.h>
21281 +
21282 +
21283 +int vx_info_kill(struct vx_info *vxi, int pid, int sig)
21284 +{
21285 +       int retval, count = 0;
21286 +       struct task_struct *p;
21287 +       struct siginfo *sip = SEND_SIG_PRIV;
21288 +
21289 +       retval = -ESRCH;
21290 +       vxdprintk(VXD_CBIT(misc, 4),
21291 +               "vx_info_kill(%p[#%d],%d,%d)*",
21292 +               vxi, vxi->vx_id, pid, sig);
21293 +       read_lock(&tasklist_lock);
21294 +       switch (pid) {
21295 +       case  0:
21296 +       case -1:
21297 +               for_each_process(p) {
21298 +                       int err = 0;
21299 +
21300 +                       if (vx_task_xid(p) != vxi->vx_id || p->pid <= 1 ||
21301 +                               (pid && vxi->vx_initpid == p->pid))
21302 +                               continue;
21303 +
21304 +                       err = group_send_sig_info(sig, sip, p);
21305 +                       ++count;
21306 +                       if (err != -EPERM)
21307 +                               retval = err;
21308 +               }
21309 +               break;
21310 +
21311 +       case 1:
21312 +               if (vxi->vx_initpid) {
21313 +                       pid = vxi->vx_initpid;
21314 +                       /* for now, only SIGINT to private init ... */
21315 +                       if (!vx_info_flags(vxi, VXF_STATE_ADMIN, 0) &&
21316 +                               /* ... as long as there are tasks left */
21317 +                               (atomic_read(&vxi->vx_tasks) > 1))
21318 +                               sig = SIGINT;
21319 +               }
21320 +               /* fallthrough */
21321 +       default:
21322 +               rcu_read_lock();
21323 +               p = find_task_by_real_pid(pid);
21324 +               rcu_read_unlock();
21325 +               if (p) {
21326 +                       if (vx_task_xid(p) == vxi->vx_id)
21327 +                               retval = group_send_sig_info(sig, sip, p);
21328 +               }
21329 +               break;
21330 +       }
21331 +       read_unlock(&tasklist_lock);
21332 +       vxdprintk(VXD_CBIT(misc, 4),
21333 +               "vx_info_kill(%p[#%d],%d,%d,%ld) = %d",
21334 +               vxi, vxi->vx_id, pid, sig, (long)sip, retval);
21335 +       return retval;
21336 +}
21337 +
21338 +int vc_ctx_kill(struct vx_info *vxi, void __user *data)
21339 +{
21340 +       struct vcmd_ctx_kill_v0 vc_data;
21341 +
21342 +       if (copy_from_user(&vc_data, data, sizeof(vc_data)))
21343 +               return -EFAULT;
21344 +
21345 +       /* special check to allow guest shutdown */
21346 +       if (!vx_info_flags(vxi, VXF_STATE_ADMIN, 0) &&
21347 +               /* forbid killall pid=0 when init is present */
21348 +               (((vc_data.pid < 1) && vxi->vx_initpid) ||
21349 +               (vc_data.pid > 1)))
21350 +               return -EACCES;
21351 +
21352 +       return vx_info_kill(vxi, vc_data.pid, vc_data.sig);
21353 +}
21354 +
21355 +
21356 +static int __wait_exit(struct vx_info *vxi)
21357 +{
21358 +       DECLARE_WAITQUEUE(wait, current);
21359 +       int ret = 0;
21360 +
21361 +       add_wait_queue(&vxi->vx_wait, &wait);
21362 +       set_current_state(TASK_INTERRUPTIBLE);
21363 +
21364 +wait:
21365 +       if (vx_info_state(vxi,
21366 +               VXS_SHUTDOWN | VXS_HASHED | VXS_HELPER) == VXS_SHUTDOWN)
21367 +               goto out;
21368 +       if (signal_pending(current)) {
21369 +               ret = -ERESTARTSYS;
21370 +               goto out;
21371 +       }
21372 +       schedule();
21373 +       goto wait;
21374 +
21375 +out:
21376 +       set_current_state(TASK_RUNNING);
21377 +       remove_wait_queue(&vxi->vx_wait, &wait);
21378 +       return ret;
21379 +}
21380 +
21381 +
21382 +
21383 +int vc_wait_exit(struct vx_info *vxi, void __user *data)
21384 +{
21385 +       struct vcmd_wait_exit_v0 vc_data;
21386 +       int ret;
21387 +
21388 +       ret = __wait_exit(vxi);
21389 +       vc_data.reboot_cmd = vxi->reboot_cmd;
21390 +       vc_data.exit_code = vxi->exit_code;
21391 +
21392 +       if (copy_to_user(data, &vc_data, sizeof(vc_data)))
21393 +               ret = -EFAULT;
21394 +       return ret;
21395 +}
21396 +
21397 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/space.c linux-4.9/kernel/vserver/space.c
21398 --- linux-4.9/kernel/vserver/space.c    1970-01-01 01:00:00.000000000 +0100
21399 +++ linux-4.9/kernel/vserver/space.c    2021-02-24 15:47:45.124410596 +0100
21400 @@ -0,0 +1,437 @@
21401 +/*
21402 + *  linux/kernel/vserver/space.c
21403 + *
21404 + *  Virtual Server: Context Space Support
21405 + *
21406 + *  Copyright (C) 2003-2010  Herbert P?tzl
21407 + *
21408 + *  V0.01  broken out from context.c 0.07
21409 + *  V0.02  added task locking for namespace
21410 + *  V0.03  broken out vx_enter_namespace
21411 + *  V0.04  added *space support and commands
21412 + *  V0.05  added credential support
21413 + *
21414 + */
21415 +
21416 +#include <linux/utsname.h>
21417 +#include <linux/nsproxy.h>
21418 +#include <linux/err.h>
21419 +#include <linux/fs_struct.h>
21420 +#include <linux/cred.h>
21421 +#include <asm/uaccess.h>
21422 +
21423 +#include <linux/vs_context.h>
21424 +#include <linux/vserver/space.h>
21425 +#include <linux/vserver/space_cmd.h>
21426 +
21427 +atomic_t vs_global_nsproxy     = ATOMIC_INIT(0);
21428 +atomic_t vs_global_fs          = ATOMIC_INIT(0);
21429 +atomic_t vs_global_mnt_ns      = ATOMIC_INIT(0);
21430 +atomic_t vs_global_uts_ns      = ATOMIC_INIT(0);
21431 +atomic_t vs_global_ipc_ns      = ATOMIC_INIT(0);
21432 +atomic_t vs_global_user_ns     = ATOMIC_INIT(0);
21433 +atomic_t vs_global_pid_ns      = ATOMIC_INIT(0);
21434 +
21435 +
21436 +/* namespace functions */
21437 +
21438 +#include <linux/mnt_namespace.h>
21439 +#include <linux/user_namespace.h>
21440 +#include <linux/pid_namespace.h>
21441 +#include <linux/ipc_namespace.h>
21442 +#include <net/net_namespace.h>
21443 +#include "../fs/mount.h"
21444 +
21445 +
21446 +static const struct vcmd_space_mask_v1 space_mask_v0 = {
21447 +       .mask = CLONE_FS |
21448 +               CLONE_NEWNS |
21449 +#ifdef CONFIG_UTS_NS
21450 +               CLONE_NEWUTS |
21451 +#endif
21452 +#ifdef CONFIG_IPC_NS
21453 +               CLONE_NEWIPC |
21454 +#endif
21455 +#ifdef CONFIG_USER_NS
21456 +               CLONE_NEWUSER |
21457 +#endif
21458 +               0
21459 +};
21460 +
21461 +static const struct vcmd_space_mask_v1 space_mask = {
21462 +       .mask = CLONE_FS |
21463 +               CLONE_NEWNS |
21464 +#ifdef CONFIG_UTS_NS
21465 +               CLONE_NEWUTS |
21466 +#endif
21467 +#ifdef CONFIG_IPC_NS
21468 +               CLONE_NEWIPC |
21469 +#endif
21470 +#ifdef CONFIG_USER_NS
21471 +               CLONE_NEWUSER |
21472 +#endif
21473 +#ifdef CONFIG_PID_NS
21474 +               CLONE_NEWPID |
21475 +#endif
21476 +#ifdef CONFIG_NET_NS
21477 +               CLONE_NEWNET |
21478 +#endif
21479 +               0
21480 +};
21481 +
21482 +static const struct vcmd_space_mask_v1 default_space_mask = {
21483 +       .mask = CLONE_FS |
21484 +               CLONE_NEWNS |
21485 +#ifdef CONFIG_UTS_NS
21486 +               CLONE_NEWUTS |
21487 +#endif
21488 +#ifdef CONFIG_IPC_NS
21489 +               CLONE_NEWIPC |
21490 +#endif
21491 +#ifdef CONFIG_USER_NS
21492 +//             CLONE_NEWUSER |
21493 +#endif
21494 +#ifdef CONFIG_PID_NS
21495 +//             CLONE_NEWPID |
21496 +#endif
21497 +               0
21498 +};
21499 +
21500 +/*
21501 + *     build a new nsproxy mix
21502 + *      assumes that both proxies are 'const'
21503 + *     does not touch nsproxy refcounts
21504 + *     will hold a reference on the result.
21505 + */
21506 +
21507 +struct nsproxy *vs_mix_nsproxy(struct nsproxy *old_nsproxy,
21508 +       struct nsproxy *new_nsproxy, unsigned long mask)
21509 +{
21510 +       struct mnt_namespace *old_ns;
21511 +       struct uts_namespace *old_uts;
21512 +       struct ipc_namespace *old_ipc;
21513 +#ifdef CONFIG_PID_NS
21514 +       struct pid_namespace *old_pid;
21515 +#endif
21516 +#ifdef CONFIG_NET_NS
21517 +       struct net *old_net;
21518 +#endif
21519 +       struct nsproxy *nsproxy;
21520 +
21521 +       nsproxy = copy_nsproxy(old_nsproxy);
21522 +       if (!nsproxy)
21523 +               goto out;
21524 +
21525 +       if (mask & CLONE_NEWNS) {
21526 +               old_ns = nsproxy->mnt_ns;
21527 +               nsproxy->mnt_ns = new_nsproxy->mnt_ns;
21528 +               if (nsproxy->mnt_ns)
21529 +                       get_mnt_ns(nsproxy->mnt_ns);
21530 +       } else
21531 +               old_ns = NULL;
21532 +
21533 +       if (mask & CLONE_NEWUTS) {
21534 +               old_uts = nsproxy->uts_ns;
21535 +               nsproxy->uts_ns = new_nsproxy->uts_ns;
21536 +               if (nsproxy->uts_ns)
21537 +                       get_uts_ns(nsproxy->uts_ns);
21538 +       } else
21539 +               old_uts = NULL;
21540 +
21541 +       if (mask & CLONE_NEWIPC) {
21542 +               old_ipc = nsproxy->ipc_ns;
21543 +               nsproxy->ipc_ns = new_nsproxy->ipc_ns;
21544 +               if (nsproxy->ipc_ns)
21545 +                       get_ipc_ns(nsproxy->ipc_ns);
21546 +       } else
21547 +               old_ipc = NULL;
21548 +
21549 +#ifdef CONFIG_PID_NS
21550 +       if (mask & CLONE_NEWPID) {
21551 +               old_pid = nsproxy->pid_ns_for_children;
21552 +               nsproxy->pid_ns_for_children = new_nsproxy->pid_ns_for_children;
21553 +               if (nsproxy->pid_ns_for_children)
21554 +                       get_pid_ns(nsproxy->pid_ns_for_children);
21555 +       } else
21556 +               old_pid = NULL;
21557 +#endif
21558 +#ifdef CONFIG_NET_NS
21559 +       if (mask & CLONE_NEWNET) {
21560 +               old_net = nsproxy->net_ns;
21561 +               nsproxy->net_ns = new_nsproxy->net_ns;
21562 +               if (nsproxy->net_ns)
21563 +                       get_net(nsproxy->net_ns);
21564 +       } else
21565 +               old_net = NULL;
21566 +#endif
21567 +       if (old_ns)
21568 +               put_mnt_ns(old_ns);
21569 +       if (old_uts)
21570 +               put_uts_ns(old_uts);
21571 +       if (old_ipc)
21572 +               put_ipc_ns(old_ipc);
21573 +#ifdef CONFIG_PID_NS
21574 +       if (old_pid)
21575 +               put_pid_ns(old_pid);
21576 +#endif
21577 +#ifdef CONFIG_NET_NS
21578 +       if (old_net)
21579 +               put_net(old_net);
21580 +#endif
21581 +out:
21582 +       return nsproxy;
21583 +}
21584 +
21585 +
21586 +/*
21587 + *     merge two nsproxy structs into a new one.
21588 + *     will hold a reference on the result.
21589 + */
21590 +
21591 +static inline
21592 +struct nsproxy *__vs_merge_nsproxy(struct nsproxy *old,
21593 +       struct nsproxy *proxy, unsigned long mask)
21594 +{
21595 +       struct nsproxy null_proxy = { .mnt_ns = NULL };
21596 +
21597 +       if (!proxy)
21598 +               return NULL;
21599 +
21600 +       if (mask) {
21601 +               /* vs_mix_nsproxy returns with reference */
21602 +               return vs_mix_nsproxy(old ? old : &null_proxy,
21603 +                       proxy, mask);
21604 +       }
21605 +       get_nsproxy(proxy);
21606 +       return proxy;
21607 +}
21608 +
21609 +
21610 +int vx_enter_space(struct vx_info *vxi, unsigned long mask, unsigned index)
21611 +{
21612 +       struct nsproxy *proxy, *proxy_cur, *proxy_new;
21613 +       struct fs_struct *fs_cur, *fs = NULL;
21614 +       struct _vx_space *space;
21615 +       int ret, kill = 0;
21616 +
21617 +       vxdprintk(VXD_CBIT(space, 8), "vx_enter_space(%p[#%u],0x%08lx,%d)",
21618 +               vxi, vxi->vx_id, mask, index);
21619 +
21620 +       if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0))
21621 +               return -EACCES;
21622 +
21623 +       if (index >= VX_SPACES)
21624 +               return -EINVAL;
21625 +
21626 +       space = &vxi->space[index];
21627 +
21628 +       if (!mask)
21629 +               mask = space->vx_nsmask;
21630 +
21631 +       if ((mask & space->vx_nsmask) != mask)
21632 +               return -EINVAL;
21633 +
21634 +       if (mask & CLONE_FS) {
21635 +               fs = copy_fs_struct(space->vx_fs);
21636 +               if (!fs)
21637 +                       return -ENOMEM;
21638 +       }
21639 +       proxy = space->vx_nsproxy;
21640 +
21641 +       vxdprintk(VXD_CBIT(space, 9),
21642 +               "vx_enter_space(%p[#%u],0x%08lx,%d) -> (%p,%p)",
21643 +               vxi, vxi->vx_id, mask, index, proxy, fs);
21644 +
21645 +       task_lock(current);
21646 +       fs_cur = current->fs;
21647 +
21648 +       if (mask & CLONE_FS) {
21649 +               spin_lock(&fs_cur->lock);
21650 +               current->fs = fs;
21651 +               kill = !--fs_cur->users;
21652 +               spin_unlock(&fs_cur->lock);
21653 +       }
21654 +
21655 +       proxy_cur = current->nsproxy;
21656 +       get_nsproxy(proxy_cur);
21657 +       task_unlock(current);
21658 +
21659 +       if (kill)
21660 +               free_fs_struct(fs_cur);
21661 +
21662 +       proxy_new = __vs_merge_nsproxy(proxy_cur, proxy, mask);
21663 +       if (IS_ERR(proxy_new)) {
21664 +               ret = PTR_ERR(proxy_new);
21665 +               goto out_put;
21666 +       }
21667 +
21668 +       proxy_new = xchg(&current->nsproxy, proxy_new);
21669 +
21670 +       if (mask & CLONE_NEWUSER) {
21671 +               struct cred *cred;
21672 +
21673 +               vxdprintk(VXD_CBIT(space, 10),
21674 +                       "vx_enter_space(%p[#%u],%p) cred (%p,%p)",
21675 +                       vxi, vxi->vx_id, space->vx_cred,
21676 +                       current->real_cred, current->cred);
21677 +
21678 +               if (space->vx_cred) {
21679 +                       cred = __prepare_creds(space->vx_cred);
21680 +                       if (cred)
21681 +                               commit_creds(cred);
21682 +               }
21683 +       }
21684 +
21685 +       ret = 0;
21686 +
21687 +       if (proxy_new)
21688 +               put_nsproxy(proxy_new);
21689 +out_put:
21690 +       if (proxy_cur)
21691 +               put_nsproxy(proxy_cur);
21692 +       return ret;
21693 +}
21694 +
21695 +
21696 +int vx_set_space(struct vx_info *vxi, unsigned long mask, unsigned index)
21697 +{
21698 +       struct nsproxy *proxy_vxi, *proxy_cur, *proxy_new;
21699 +       struct fs_struct *fs_vxi, *fs = NULL;
21700 +       struct _vx_space *space;
21701 +       int ret, kill = 0;
21702 +
21703 +       vxdprintk(VXD_CBIT(space, 8), "vx_set_space(%p[#%u],0x%08lx,%d)",
21704 +               vxi, vxi->vx_id, mask, index);
21705 +
21706 +       if ((mask & space_mask.mask) != mask)
21707 +               return -EINVAL;
21708 +
21709 +       if (index >= VX_SPACES)
21710 +               return -EINVAL;
21711 +
21712 +       space = &vxi->space[index];
21713 +
21714 +       proxy_vxi = space->vx_nsproxy;
21715 +       fs_vxi = space->vx_fs;
21716 +
21717 +       if (mask & CLONE_FS) {
21718 +               fs = copy_fs_struct(current->fs);
21719 +               if (!fs)
21720 +                       return -ENOMEM;
21721 +       }
21722 +
21723 +       task_lock(current);
21724 +
21725 +       if (mask & CLONE_FS) {
21726 +               spin_lock(&fs_vxi->lock);
21727 +               space->vx_fs = fs;
21728 +               kill = !--fs_vxi->users;
21729 +               spin_unlock(&fs_vxi->lock);
21730 +       }
21731 +
21732 +       proxy_cur = current->nsproxy;
21733 +       get_nsproxy(proxy_cur);
21734 +       task_unlock(current);
21735 +
21736 +       if (kill)
21737 +               free_fs_struct(fs_vxi);
21738 +
21739 +       proxy_new = __vs_merge_nsproxy(proxy_vxi, proxy_cur, mask);
21740 +       if (IS_ERR(proxy_new)) {
21741 +               ret = PTR_ERR(proxy_new);
21742 +               goto out_put;
21743 +       }
21744 +
21745 +       proxy_new = xchg(&space->vx_nsproxy, proxy_new);
21746 +       space->vx_nsmask |= mask;
21747 +
21748 +       if (mask & CLONE_NEWUSER) {
21749 +               struct cred *cred;
21750 +
21751 +               vxdprintk(VXD_CBIT(space, 10),
21752 +                       "vx_set_space(%p[#%u],%p) cred (%p,%p)",
21753 +                       vxi, vxi->vx_id, space->vx_cred,
21754 +                       current->real_cred, current->cred);
21755 +
21756 +               cred = prepare_creds();
21757 +               cred = (struct cred *)xchg(&space->vx_cred, cred);
21758 +               if (cred)
21759 +                       abort_creds(cred);
21760 +       }
21761 +
21762 +       ret = 0;
21763 +
21764 +       if (proxy_new)
21765 +               put_nsproxy(proxy_new);
21766 +out_put:
21767 +       if (proxy_cur)
21768 +               put_nsproxy(proxy_cur);
21769 +       return ret;
21770 +}
21771 +
21772 +
21773 +int vc_enter_space_v1(struct vx_info *vxi, void __user *data)
21774 +{
21775 +       struct vcmd_space_mask_v1 vc_data = { .mask = 0 };
21776 +
21777 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21778 +               return -EFAULT;
21779 +
21780 +       return vx_enter_space(vxi, vc_data.mask, 0);
21781 +}
21782 +
21783 +int vc_enter_space(struct vx_info *vxi, void __user *data)
21784 +{
21785 +       struct vcmd_space_mask_v2 vc_data = { .mask = 0 };
21786 +
21787 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21788 +               return -EFAULT;
21789 +
21790 +       if (vc_data.index >= VX_SPACES)
21791 +               return -EINVAL;
21792 +
21793 +       return vx_enter_space(vxi, vc_data.mask, vc_data.index);
21794 +}
21795 +
21796 +int vc_set_space_v1(struct vx_info *vxi, void __user *data)
21797 +{
21798 +       struct vcmd_space_mask_v1 vc_data = { .mask = 0 };
21799 +
21800 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21801 +               return -EFAULT;
21802 +
21803 +       return vx_set_space(vxi, vc_data.mask, 0);
21804 +}
21805 +
21806 +int vc_set_space(struct vx_info *vxi, void __user *data)
21807 +{
21808 +       struct vcmd_space_mask_v2 vc_data = { .mask = 0 };
21809 +
21810 +       if (data && copy_from_user(&vc_data, data, sizeof(vc_data)))
21811 +               return -EFAULT;
21812 +
21813 +       if (vc_data.index >= VX_SPACES)
21814 +               return -EINVAL;
21815 +
21816 +       return vx_set_space(vxi, vc_data.mask, vc_data.index);
21817 +}
21818 +
21819 +int vc_get_space_mask(void __user *data, int type)
21820 +{
21821 +       const struct vcmd_space_mask_v1 *mask;
21822 +
21823 +       if (type == 0)
21824 +               mask = &space_mask_v0;
21825 +       else if (type == 1)
21826 +               mask = &space_mask;
21827 +       else
21828 +               mask = &default_space_mask;
21829 +
21830 +       vxdprintk(VXD_CBIT(space, 10),
21831 +               "vc_get_space_mask(%d) = %08llx", type, mask->mask);
21832 +
21833 +       if (copy_to_user(data, mask, sizeof(*mask)))
21834 +               return -EFAULT;
21835 +       return 0;
21836 +}
21837 +
21838 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/switch.c linux-4.9/kernel/vserver/switch.c
21839 --- linux-4.9/kernel/vserver/switch.c   1970-01-01 01:00:00.000000000 +0100
21840 +++ linux-4.9/kernel/vserver/switch.c   2021-02-24 15:47:45.124410596 +0100
21841 @@ -0,0 +1,556 @@
21842 +/*
21843 + *  linux/kernel/vserver/switch.c
21844 + *
21845 + *  Virtual Server: Syscall Switch
21846 + *
21847 + *  Copyright (C) 2003-2011  Herbert P?tzl
21848 + *
21849 + *  V0.01  syscall switch
21850 + *  V0.02  added signal to context
21851 + *  V0.03  added rlimit functions
21852 + *  V0.04  added iattr, task/xid functions
21853 + *  V0.05  added debug/history stuff
21854 + *  V0.06  added compat32 layer
21855 + *  V0.07  vcmd args and perms
21856 + *  V0.08  added status commands
21857 + *  V0.09  added tag commands
21858 + *  V0.10  added oom bias
21859 + *  V0.11  added device commands
21860 + *  V0.12  added warn mask
21861 + *
21862 + */
21863 +
21864 +#include <linux/vs_context.h>
21865 +#include <linux/vs_network.h>
21866 +#include <linux/vserver/switch.h>
21867 +
21868 +#include "vci_config.h"
21869 +
21870 +
21871 +static inline
21872 +int vc_get_version(uint32_t id)
21873 +{
21874 +       return VCI_VERSION;
21875 +}
21876 +
21877 +static inline
21878 +int vc_get_vci(uint32_t id)
21879 +{
21880 +       return vci_kernel_config();
21881 +}
21882 +
21883 +#include <linux/vserver/context_cmd.h>
21884 +#include <linux/vserver/cvirt_cmd.h>
21885 +#include <linux/vserver/cacct_cmd.h>
21886 +#include <linux/vserver/limit_cmd.h>
21887 +#include <linux/vserver/network_cmd.h>
21888 +#include <linux/vserver/sched_cmd.h>
21889 +#include <linux/vserver/debug_cmd.h>
21890 +#include <linux/vserver/inode_cmd.h>
21891 +#include <linux/vserver/dlimit_cmd.h>
21892 +#include <linux/vserver/signal_cmd.h>
21893 +#include <linux/vserver/space_cmd.h>
21894 +#include <linux/vserver/tag_cmd.h>
21895 +#include <linux/vserver/device_cmd.h>
21896 +
21897 +#include <linux/vserver/inode.h>
21898 +#include <linux/vserver/dlimit.h>
21899 +
21900 +
21901 +#ifdef CONFIG_COMPAT
21902 +#define __COMPAT(name, id, data, compat)       \
21903 +       (compat) ? name ## _x32(id, data) : name(id, data)
21904 +#define __COMPAT_NO_ID(name, data, compat)     \
21905 +       (compat) ? name ## _x32(data) : name(data)
21906 +#else
21907 +#define __COMPAT(name, id, data, compat)       \
21908 +       name(id, data)
21909 +#define __COMPAT_NO_ID(name, data, compat)     \
21910 +       name(data)
21911 +#endif
21912 +
21913 +
21914 +static inline
21915 +long do_vcmd(uint32_t cmd, uint32_t id,
21916 +       struct vx_info *vxi, struct nx_info *nxi,
21917 +       void __user *data, int compat)
21918 +{
21919 +       switch (cmd) {
21920 +
21921 +       case VCMD_get_version:
21922 +               return vc_get_version(id);
21923 +       case VCMD_get_vci:
21924 +               return vc_get_vci(id);
21925 +
21926 +       case VCMD_task_xid:
21927 +               return vc_task_xid(id);
21928 +       case VCMD_vx_info:
21929 +               return vc_vx_info(vxi, data);
21930 +
21931 +       case VCMD_task_nid:
21932 +               return vc_task_nid(id);
21933 +       case VCMD_nx_info:
21934 +               return vc_nx_info(nxi, data);
21935 +
21936 +       case VCMD_task_tag:
21937 +               return vc_task_tag(id);
21938 +
21939 +       case VCMD_set_space_v1:
21940 +               return vc_set_space_v1(vxi, data);
21941 +       /* this is version 2 */
21942 +       case VCMD_set_space:
21943 +               return vc_set_space(vxi, data);
21944 +
21945 +       case VCMD_get_space_mask_v0:
21946 +               return vc_get_space_mask(data, 0);
21947 +       /* this is version 1 */
21948 +       case VCMD_get_space_mask:
21949 +               return vc_get_space_mask(data, 1);
21950 +
21951 +       case VCMD_get_space_default:
21952 +               return vc_get_space_mask(data, -1);
21953 +
21954 +       case VCMD_set_umask:
21955 +               return vc_set_umask(vxi, data);
21956 +
21957 +       case VCMD_get_umask:
21958 +               return vc_get_umask(vxi, data);
21959 +
21960 +       case VCMD_set_wmask:
21961 +               return vc_set_wmask(vxi, data);
21962 +
21963 +       case VCMD_get_wmask:
21964 +               return vc_get_wmask(vxi, data);
21965 +#ifdef CONFIG_IA32_EMULATION
21966 +       case VCMD_get_rlimit:
21967 +               return __COMPAT(vc_get_rlimit, vxi, data, compat);
21968 +       case VCMD_set_rlimit:
21969 +               return __COMPAT(vc_set_rlimit, vxi, data, compat);
21970 +#else
21971 +       case VCMD_get_rlimit:
21972 +               return vc_get_rlimit(vxi, data);
21973 +       case VCMD_set_rlimit:
21974 +               return vc_set_rlimit(vxi, data);
21975 +#endif
21976 +       case VCMD_get_rlimit_mask:
21977 +               return vc_get_rlimit_mask(id, data);
21978 +       case VCMD_reset_hits:
21979 +               return vc_reset_hits(vxi, data);
21980 +       case VCMD_reset_minmax:
21981 +               return vc_reset_minmax(vxi, data);
21982 +
21983 +       case VCMD_get_vhi_name:
21984 +               return vc_get_vhi_name(vxi, data);
21985 +       case VCMD_set_vhi_name:
21986 +               return vc_set_vhi_name(vxi, data);
21987 +
21988 +       case VCMD_ctx_stat:
21989 +               return vc_ctx_stat(vxi, data);
21990 +       case VCMD_virt_stat:
21991 +               return vc_virt_stat(vxi, data);
21992 +       case VCMD_sock_stat:
21993 +               return vc_sock_stat(vxi, data);
21994 +       case VCMD_rlimit_stat:
21995 +               return vc_rlimit_stat(vxi, data);
21996 +
21997 +       case VCMD_set_cflags:
21998 +               return vc_set_cflags(vxi, data);
21999 +       case VCMD_get_cflags:
22000 +               return vc_get_cflags(vxi, data);
22001 +
22002 +       /* this is version 1 */
22003 +       case VCMD_set_ccaps:
22004 +               return vc_set_ccaps(vxi, data);
22005 +       /* this is version 1 */
22006 +       case VCMD_get_ccaps:
22007 +               return vc_get_ccaps(vxi, data);
22008 +       case VCMD_set_bcaps:
22009 +               return vc_set_bcaps(vxi, data);
22010 +       case VCMD_get_bcaps:
22011 +               return vc_get_bcaps(vxi, data);
22012 +
22013 +       case VCMD_set_badness:
22014 +               return vc_set_badness(vxi, data);
22015 +       case VCMD_get_badness:
22016 +               return vc_get_badness(vxi, data);
22017 +
22018 +       case VCMD_set_nflags:
22019 +               return vc_set_nflags(nxi, data);
22020 +       case VCMD_get_nflags:
22021 +               return vc_get_nflags(nxi, data);
22022 +
22023 +       case VCMD_set_ncaps:
22024 +               return vc_set_ncaps(nxi, data);
22025 +       case VCMD_get_ncaps:
22026 +               return vc_get_ncaps(nxi, data);
22027 +
22028 +       case VCMD_set_prio_bias:
22029 +               return vc_set_prio_bias(vxi, data);
22030 +       case VCMD_get_prio_bias:
22031 +               return vc_get_prio_bias(vxi, data);
22032 +       case VCMD_add_dlimit:
22033 +               return __COMPAT(vc_add_dlimit, id, data, compat);
22034 +       case VCMD_rem_dlimit:
22035 +               return __COMPAT(vc_rem_dlimit, id, data, compat);
22036 +       case VCMD_set_dlimit:
22037 +               return __COMPAT(vc_set_dlimit, id, data, compat);
22038 +       case VCMD_get_dlimit:
22039 +               return __COMPAT(vc_get_dlimit, id, data, compat);
22040 +
22041 +       case VCMD_ctx_kill:
22042 +               return vc_ctx_kill(vxi, data);
22043 +
22044 +       case VCMD_wait_exit:
22045 +               return vc_wait_exit(vxi, data);
22046 +
22047 +       case VCMD_get_iattr:
22048 +               return __COMPAT_NO_ID(vc_get_iattr, data, compat);
22049 +       case VCMD_set_iattr:
22050 +               return __COMPAT_NO_ID(vc_set_iattr, data, compat);
22051 +
22052 +       case VCMD_fget_iattr:
22053 +               return vc_fget_iattr(id, data);
22054 +       case VCMD_fset_iattr:
22055 +               return vc_fset_iattr(id, data);
22056 +
22057 +       case VCMD_enter_space_v0:
22058 +               return vc_enter_space_v1(vxi, NULL);
22059 +       case VCMD_enter_space_v1:
22060 +               return vc_enter_space_v1(vxi, data);
22061 +       /* this is version 2 */
22062 +       case VCMD_enter_space:
22063 +               return vc_enter_space(vxi, data);
22064 +
22065 +       case VCMD_ctx_create_v0:
22066 +               return vc_ctx_create(id, NULL);
22067 +       case VCMD_ctx_create:
22068 +               return vc_ctx_create(id, data);
22069 +       case VCMD_ctx_migrate_v0:
22070 +               return vc_ctx_migrate(vxi, NULL);
22071 +       case VCMD_ctx_migrate:
22072 +               return vc_ctx_migrate(vxi, data);
22073 +
22074 +       case VCMD_net_create_v0:
22075 +               return vc_net_create(id, NULL);
22076 +       case VCMD_net_create:
22077 +               return vc_net_create(id, data);
22078 +       case VCMD_net_migrate:
22079 +               return vc_net_migrate(nxi, data);
22080 +
22081 +       case VCMD_tag_migrate:
22082 +               return vc_tag_migrate(id);
22083 +
22084 +       case VCMD_net_add:
22085 +               return vc_net_add(nxi, data);
22086 +       case VCMD_net_remove:
22087 +               return vc_net_remove(nxi, data);
22088 +
22089 +       case VCMD_net_add_ipv4_v1:
22090 +               return vc_net_add_ipv4_v1(nxi, data);
22091 +       /* this is version 2 */
22092 +       case VCMD_net_add_ipv4:
22093 +               return vc_net_add_ipv4(nxi, data);
22094 +
22095 +       case VCMD_net_rem_ipv4_v1:
22096 +               return vc_net_rem_ipv4_v1(nxi, data);
22097 +       /* this is version 2 */
22098 +       case VCMD_net_rem_ipv4:
22099 +               return vc_net_rem_ipv4(nxi, data);
22100 +#ifdef CONFIG_IPV6
22101 +       case VCMD_net_add_ipv6:
22102 +               return vc_net_add_ipv6(nxi, data);
22103 +       case VCMD_net_remove_ipv6:
22104 +               return vc_net_remove_ipv6(nxi, data);
22105 +#endif
22106 +/*     case VCMD_add_match_ipv4:
22107 +               return vc_add_match_ipv4(nxi, data);
22108 +       case VCMD_get_match_ipv4:
22109 +               return vc_get_match_ipv4(nxi, data);
22110 +#ifdef CONFIG_IPV6
22111 +       case VCMD_add_match_ipv6:
22112 +               return vc_add_match_ipv6(nxi, data);
22113 +       case VCMD_get_match_ipv6:
22114 +               return vc_get_match_ipv6(nxi, data);
22115 +#endif */
22116 +
22117 +#ifdef CONFIG_VSERVER_DEVICE
22118 +       case VCMD_set_mapping:
22119 +               return __COMPAT(vc_set_mapping, vxi, data, compat);
22120 +       case VCMD_unset_mapping:
22121 +               return __COMPAT(vc_unset_mapping, vxi, data, compat);
22122 +#endif
22123 +#ifdef CONFIG_VSERVER_HISTORY
22124 +       case VCMD_dump_history:
22125 +               return vc_dump_history(id);
22126 +       case VCMD_read_history:
22127 +               return __COMPAT(vc_read_history, id, data, compat);
22128 +#endif
22129 +       default:
22130 +               vxwprintk_task(1, "unimplemented VCMD_%02d_%d[%d]",
22131 +                       VC_CATEGORY(cmd), VC_COMMAND(cmd), VC_VERSION(cmd));
22132 +       }
22133 +       return -ENOSYS;
22134 +}
22135 +
22136 +
22137 +#define        __VCMD(vcmd, _perm, _args, _flags)              \
22138 +       case VCMD_ ## vcmd: perm = _perm;               \
22139 +               args = _args; flags = _flags; break
22140 +
22141 +
22142 +#define VCA_NONE       0x00
22143 +#define VCA_VXI                0x01
22144 +#define VCA_NXI                0x02
22145 +
22146 +#define VCF_NONE       0x00
22147 +#define VCF_INFO       0x01
22148 +#define VCF_ADMIN      0x02
22149 +#define VCF_ARES       0x06    /* includes admin */
22150 +#define VCF_SETUP      0x08
22151 +
22152 +#define VCF_ZIDOK      0x10    /* zero id okay */
22153 +
22154 +
22155 +static inline
22156 +long do_vserver(uint32_t cmd, uint32_t id, void __user *data, int compat)
22157 +{
22158 +       long ret;
22159 +       int permit = -1, state = 0;
22160 +       int perm = -1, args = 0, flags = 0;
22161 +       struct vx_info *vxi = NULL;
22162 +       struct nx_info *nxi = NULL;
22163 +
22164 +       switch (cmd) {
22165 +       /* unpriviledged commands */
22166 +       __VCMD(get_version,      0, VCA_NONE,   0);
22167 +       __VCMD(get_vci,          0, VCA_NONE,   0);
22168 +       __VCMD(get_rlimit_mask,  0, VCA_NONE,   0);
22169 +       __VCMD(get_space_mask_v0,0, VCA_NONE,   0);
22170 +       __VCMD(get_space_mask,   0, VCA_NONE,   0);
22171 +       __VCMD(get_space_default,0, VCA_NONE,   0);
22172 +
22173 +       /* info commands */
22174 +       __VCMD(task_xid,         2, VCA_NONE,   0);
22175 +       __VCMD(reset_hits,       2, VCA_VXI,    0);
22176 +       __VCMD(reset_minmax,     2, VCA_VXI,    0);
22177 +       __VCMD(vx_info,          3, VCA_VXI,    VCF_INFO);
22178 +       __VCMD(get_bcaps,        3, VCA_VXI,    VCF_INFO);
22179 +       __VCMD(get_ccaps,        3, VCA_VXI,    VCF_INFO);
22180 +       __VCMD(get_cflags,       3, VCA_VXI,    VCF_INFO);
22181 +       __VCMD(get_umask,        3, VCA_VXI,    VCF_INFO);
22182 +       __VCMD(get_wmask,        3, VCA_VXI,    VCF_INFO);
22183 +       __VCMD(get_badness,      3, VCA_VXI,    VCF_INFO);
22184 +       __VCMD(get_vhi_name,     3, VCA_VXI,    VCF_INFO);
22185 +       __VCMD(get_rlimit,       3, VCA_VXI,    VCF_INFO);
22186 +
22187 +       __VCMD(ctx_stat,         3, VCA_VXI,    VCF_INFO);
22188 +       __VCMD(virt_stat,        3, VCA_VXI,    VCF_INFO);
22189 +       __VCMD(sock_stat,        3, VCA_VXI,    VCF_INFO);
22190 +       __VCMD(rlimit_stat,      3, VCA_VXI,    VCF_INFO);
22191 +
22192 +       __VCMD(task_nid,         2, VCA_NONE,   0);
22193 +       __VCMD(nx_info,          3, VCA_NXI,    VCF_INFO);
22194 +       __VCMD(get_ncaps,        3, VCA_NXI,    VCF_INFO);
22195 +       __VCMD(get_nflags,       3, VCA_NXI,    VCF_INFO);
22196 +
22197 +       __VCMD(task_tag,         2, VCA_NONE,   0);
22198 +
22199 +       __VCMD(get_iattr,        2, VCA_NONE,   0);
22200 +       __VCMD(fget_iattr,       2, VCA_NONE,   0);
22201 +       __VCMD(get_dlimit,       3, VCA_NONE,   VCF_INFO);
22202 +       __VCMD(get_prio_bias,    3, VCA_VXI,    VCF_INFO);
22203 +
22204 +       /* lower admin commands */
22205 +       __VCMD(wait_exit,        4, VCA_VXI,    VCF_INFO);
22206 +       __VCMD(ctx_create_v0,    5, VCA_NONE,   0);
22207 +       __VCMD(ctx_create,       5, VCA_NONE,   0);
22208 +       __VCMD(ctx_migrate_v0,   5, VCA_VXI,    VCF_ADMIN);
22209 +       __VCMD(ctx_migrate,      5, VCA_VXI,    VCF_ADMIN);
22210 +       __VCMD(enter_space_v0,   5, VCA_VXI,    VCF_ADMIN);
22211 +       __VCMD(enter_space_v1,   5, VCA_VXI,    VCF_ADMIN);
22212 +       __VCMD(enter_space,      5, VCA_VXI,    VCF_ADMIN);
22213 +
22214 +       __VCMD(net_create_v0,    5, VCA_NONE,   0);
22215 +       __VCMD(net_create,       5, VCA_NONE,   0);
22216 +       __VCMD(net_migrate,      5, VCA_NXI,    VCF_ADMIN);
22217 +
22218 +       __VCMD(tag_migrate,      5, VCA_NONE,   VCF_ADMIN);
22219 +
22220 +       /* higher admin commands */
22221 +       __VCMD(ctx_kill,         6, VCA_VXI,    VCF_ARES);
22222 +       __VCMD(set_space_v1,     7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22223 +       __VCMD(set_space,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22224 +
22225 +       __VCMD(set_ccaps,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22226 +       __VCMD(set_bcaps,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22227 +       __VCMD(set_cflags,       7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22228 +       __VCMD(set_umask,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22229 +       __VCMD(set_wmask,        7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22230 +       __VCMD(set_badness,      7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22231 +
22232 +       __VCMD(set_vhi_name,     7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22233 +       __VCMD(set_rlimit,       7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22234 +       __VCMD(set_prio_bias,    7, VCA_VXI,    VCF_ARES | VCF_SETUP);
22235 +
22236 +       __VCMD(set_ncaps,        7, VCA_NXI,    VCF_ARES | VCF_SETUP);
22237 +       __VCMD(set_nflags,       7, VCA_NXI,    VCF_ARES | VCF_SETUP);
22238 +       __VCMD(net_add,          8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22239 +       __VCMD(net_remove,       8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22240 +       __VCMD(net_add_ipv4_v1,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22241 +       __VCMD(net_rem_ipv4_v1,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22242 +       __VCMD(net_add_ipv4,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22243 +       __VCMD(net_rem_ipv4,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22244 +#ifdef CONFIG_IPV6
22245 +       __VCMD(net_add_ipv6,     8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22246 +       __VCMD(net_remove_ipv6,  8, VCA_NXI,    VCF_ARES | VCF_SETUP);
22247 +#endif
22248 +       __VCMD(set_iattr,        7, VCA_NONE,   0);
22249 +       __VCMD(fset_iattr,       7, VCA_NONE,   0);
22250 +       __VCMD(set_dlimit,       7, VCA_NONE,   VCF_ARES);
22251 +       __VCMD(add_dlimit,       8, VCA_NONE,   VCF_ARES);
22252 +       __VCMD(rem_dlimit,       8, VCA_NONE,   VCF_ARES);
22253 +
22254 +#ifdef CONFIG_VSERVER_DEVICE
22255 +       __VCMD(set_mapping,      8, VCA_VXI,    VCF_ARES|VCF_ZIDOK);
22256 +       __VCMD(unset_mapping,    8, VCA_VXI,    VCF_ARES|VCF_ZIDOK);
22257 +#endif
22258 +       /* debug level admin commands */
22259 +#ifdef CONFIG_VSERVER_HISTORY
22260 +       __VCMD(dump_history,     9, VCA_NONE,   0);
22261 +       __VCMD(read_history,     9, VCA_NONE,   0);
22262 +#endif
22263 +
22264 +       default:
22265 +               perm = -1;
22266 +       }
22267 +
22268 +       vxdprintk(VXD_CBIT(switch, 0),
22269 +               "vc: VCMD_%02d_%d[%d], %d,%p [%d,%d,%x,%x]",
22270 +               VC_CATEGORY(cmd), VC_COMMAND(cmd),
22271 +               VC_VERSION(cmd), id, data, compat,
22272 +               perm, args, flags);
22273 +
22274 +       ret = -ENOSYS;
22275 +       if (perm < 0)
22276 +               goto out;
22277 +
22278 +       state = 1;
22279 +       if (!capable(CAP_CONTEXT))
22280 +               goto out;
22281 +
22282 +       state = 2;
22283 +       /* moved here from the individual commands */
22284 +       ret = -EPERM;
22285 +       if ((perm > 1) && !capable(CAP_SYS_ADMIN))
22286 +               goto out;
22287 +
22288 +       state = 3;
22289 +       /* vcmd involves resource management  */
22290 +       ret = -EPERM;
22291 +       if ((flags & VCF_ARES) && !capable(CAP_SYS_RESOURCE))
22292 +               goto out;
22293 +
22294 +       state = 4;
22295 +       /* various legacy exceptions */
22296 +       switch (cmd) {
22297 +       /* will go away when spectator is a cap */
22298 +       case VCMD_ctx_migrate_v0:
22299 +       case VCMD_ctx_migrate:
22300 +               if (id == 1) {
22301 +                       current->xid = 1;
22302 +                       ret = 1;
22303 +                       goto out;
22304 +               }
22305 +               break;
22306 +
22307 +       /* will go away when spectator is a cap */
22308 +       case VCMD_net_migrate:
22309 +               if (id == 1) {
22310 +                       current->nid = 1;
22311 +                       ret = 1;
22312 +                       goto out;
22313 +               }
22314 +               break;
22315 +       }
22316 +
22317 +       /* vcmds are fine by default */
22318 +       permit = 1;
22319 +
22320 +       /* admin type vcmds require admin ... */
22321 +       if (flags & VCF_ADMIN)
22322 +               permit = vx_check(0, VS_ADMIN) ? 1 : 0;
22323 +
22324 +       /* ... but setup type vcmds override that */
22325 +       if (!permit && (flags & VCF_SETUP))
22326 +               permit = vx_flags(VXF_STATE_SETUP, 0) ? 2 : 0;
22327 +
22328 +       state = 5;
22329 +       ret = -EPERM;
22330 +       if (!permit)
22331 +               goto out;
22332 +
22333 +       state = 6;
22334 +       if (!id && (flags & VCF_ZIDOK))
22335 +               goto skip_id;
22336 +
22337 +       ret = -ESRCH;
22338 +       if (args & VCA_VXI) {
22339 +               vxi = lookup_vx_info(id);
22340 +               if (!vxi)
22341 +                       goto out;
22342 +
22343 +               if ((flags & VCF_ADMIN) &&
22344 +                       /* special case kill for shutdown */
22345 +                       (cmd != VCMD_ctx_kill) &&
22346 +                       /* can context be administrated? */
22347 +                       !vx_info_flags(vxi, VXF_STATE_ADMIN, 0)) {
22348 +                       ret = -EACCES;
22349 +                       goto out_vxi;
22350 +               }
22351 +       }
22352 +       state = 7;
22353 +       if (args & VCA_NXI) {
22354 +               nxi = lookup_nx_info(id);
22355 +               if (!nxi)
22356 +                       goto out_vxi;
22357 +
22358 +               if ((flags & VCF_ADMIN) &&
22359 +                       /* can context be administrated? */
22360 +                       !nx_info_flags(nxi, NXF_STATE_ADMIN, 0)) {
22361 +                       ret = -EACCES;
22362 +                       goto out_nxi;
22363 +               }
22364 +       }
22365 +skip_id:
22366 +       state = 8;
22367 +       ret = do_vcmd(cmd, id, vxi, nxi, data, compat);
22368 +
22369 +out_nxi:
22370 +       if ((args & VCA_NXI) && nxi)
22371 +               put_nx_info(nxi);
22372 +out_vxi:
22373 +       if ((args & VCA_VXI) && vxi)
22374 +               put_vx_info(vxi);
22375 +out:
22376 +       vxdprintk(VXD_CBIT(switch, 1),
22377 +               "vc: VCMD_%02d_%d[%d] = %08lx(%ld) [%d,%d]",
22378 +               VC_CATEGORY(cmd), VC_COMMAND(cmd),
22379 +               VC_VERSION(cmd), ret, ret, state, permit);
22380 +       return ret;
22381 +}
22382 +
22383 +asmlinkage long
22384 +sys_vserver(uint32_t cmd, uint32_t id, void __user *data)
22385 +{
22386 +       return do_vserver(cmd, id, data, 0);
22387 +}
22388 +
22389 +#ifdef CONFIG_COMPAT
22390 +
22391 +asmlinkage long
22392 +sys32_vserver(uint32_t cmd, uint32_t id, void __user *data)
22393 +{
22394 +       return do_vserver(cmd, id, data, 1);
22395 +}
22396 +
22397 +#endif /* CONFIG_COMPAT */
22398 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/sysctl.c linux-4.9/kernel/vserver/sysctl.c
22399 --- linux-4.9/kernel/vserver/sysctl.c   1970-01-01 01:00:00.000000000 +0100
22400 +++ linux-4.9/kernel/vserver/sysctl.c   2021-02-24 15:47:45.127744035 +0100
22401 @@ -0,0 +1,249 @@
22402 +/*
22403 + *  kernel/vserver/sysctl.c
22404 + *
22405 + *  Virtual Context Support
22406 + *
22407 + *  Copyright (C) 2004-2007  Herbert P?tzl
22408 + *
22409 + *  V0.01  basic structure
22410 + *
22411 + */
22412 +
22413 +#include <linux/module.h>
22414 +#include <linux/ctype.h>
22415 +#include <linux/sysctl.h>
22416 +#include <linux/parser.h>
22417 +#include <linux/utsname.h>
22418 +
22419 +#include <asm/uaccess.h>
22420 +#include <asm/sections.h>
22421 +
22422 +enum {
22423 +       CTL_DEBUG_ERROR         = 0,
22424 +       CTL_DEBUG_SWITCH        = 1,
22425 +       CTL_DEBUG_XID,
22426 +       CTL_DEBUG_NID,
22427 +       CTL_DEBUG_TAG,
22428 +       CTL_DEBUG_NET,
22429 +       CTL_DEBUG_LIMIT,
22430 +       CTL_DEBUG_CRES,
22431 +       CTL_DEBUG_DLIM,
22432 +       CTL_DEBUG_QUOTA,
22433 +       CTL_DEBUG_CVIRT,
22434 +       CTL_DEBUG_SPACE,
22435 +       CTL_DEBUG_PERM,
22436 +       CTL_DEBUG_MISC,
22437 +};
22438 +
22439 +
22440 +unsigned int vs_debug_switch   = 0;
22441 +unsigned int vs_debug_xid      = 0;
22442 +unsigned int vs_debug_nid      = 0;
22443 +unsigned int vs_debug_tag      = 0;
22444 +unsigned int vs_debug_net      = 0;
22445 +unsigned int vs_debug_limit    = 0;
22446 +unsigned int vs_debug_cres     = 0;
22447 +unsigned int vs_debug_dlim     = 0;
22448 +unsigned int vs_debug_quota    = 0;
22449 +unsigned int vs_debug_cvirt    = 0;
22450 +unsigned int vs_debug_space    = 0;
22451 +unsigned int vs_debug_perm     = 0;
22452 +unsigned int vs_debug_misc     = 0;
22453 +
22454 +
22455 +static struct ctl_table_header *vserver_table_header;
22456 +static struct ctl_table vserver_root_table[];
22457 +
22458 +
22459 +void vserver_register_sysctl(void)
22460 +{
22461 +       if (!vserver_table_header) {
22462 +               vserver_table_header = register_sysctl_table(vserver_root_table);
22463 +       }
22464 +
22465 +}
22466 +
22467 +void vserver_unregister_sysctl(void)
22468 +{
22469 +       if (vserver_table_header) {
22470 +               unregister_sysctl_table(vserver_table_header);
22471 +               vserver_table_header = NULL;
22472 +       }
22473 +}
22474 +
22475 +static int proc_dodebug(struct ctl_table *table, int write,
22476 +       void __user *buffer, size_t *lenp, loff_t *ppos)
22477 +{
22478 +       char            tmpbuf[20], *p, c;
22479 +       unsigned int    value;
22480 +       size_t          left, len;
22481 +
22482 +       if ((*ppos && !write) || !*lenp) {
22483 +               *lenp = 0;
22484 +               return 0;
22485 +       }
22486 +
22487 +       left = *lenp;
22488 +
22489 +       if (write) {
22490 +               if (!access_ok(VERIFY_READ, buffer, left))
22491 +                       return -EFAULT;
22492 +               p = (char *)buffer;
22493 +               while (left && __get_user(c, p) >= 0 && isspace(c))
22494 +                       left--, p++;
22495 +               if (!left)
22496 +                       goto done;
22497 +
22498 +               if (left > sizeof(tmpbuf) - 1)
22499 +                       return -EINVAL;
22500 +               if (copy_from_user(tmpbuf, p, left))
22501 +                       return -EFAULT;
22502 +               tmpbuf[left] = '\0';
22503 +
22504 +               for (p = tmpbuf, value = 0; '0' <= *p && *p <= '9'; p++, left--)
22505 +                       value = 10 * value + (*p - '0');
22506 +               if (*p && !isspace(*p))
22507 +                       return -EINVAL;
22508 +               while (left && isspace(*p))
22509 +                       left--, p++;
22510 +               *(unsigned int *)table->data = value;
22511 +       } else {
22512 +               if (!access_ok(VERIFY_WRITE, buffer, left))
22513 +                       return -EFAULT;
22514 +               len = sprintf(tmpbuf, "%d", *(unsigned int *)table->data);
22515 +               if (len > left)
22516 +                       len = left;
22517 +               if (__copy_to_user(buffer, tmpbuf, len))
22518 +                       return -EFAULT;
22519 +               if ((left -= len) > 0) {
22520 +                       if (put_user('\n', (char *)buffer + len))
22521 +                               return -EFAULT;
22522 +                       left--;
22523 +               }
22524 +       }
22525 +
22526 +done:
22527 +       *lenp -= left;
22528 +       *ppos += *lenp;
22529 +       return 0;
22530 +}
22531 +
22532 +static int zero;
22533 +
22534 +#define        CTL_ENTRY(ctl, name)                            \
22535 +       {                                               \
22536 +               .procname       = #name,                \
22537 +               .data           = &vs_ ## name,         \
22538 +               .maxlen         = sizeof(int),          \
22539 +               .mode           = 0644,                 \
22540 +               .proc_handler   = &proc_dodebug,        \
22541 +               .extra1         = &zero,                \
22542 +               .extra2         = &zero,                \
22543 +       }
22544 +
22545 +static struct ctl_table vserver_debug_table[] = {
22546 +       CTL_ENTRY(CTL_DEBUG_SWITCH,     debug_switch),
22547 +       CTL_ENTRY(CTL_DEBUG_XID,        debug_xid),
22548 +       CTL_ENTRY(CTL_DEBUG_NID,        debug_nid),
22549 +       CTL_ENTRY(CTL_DEBUG_TAG,        debug_tag),
22550 +       CTL_ENTRY(CTL_DEBUG_NET,        debug_net),
22551 +       CTL_ENTRY(CTL_DEBUG_LIMIT,      debug_limit),
22552 +       CTL_ENTRY(CTL_DEBUG_CRES,       debug_cres),
22553 +       CTL_ENTRY(CTL_DEBUG_DLIM,       debug_dlim),
22554 +       CTL_ENTRY(CTL_DEBUG_QUOTA,      debug_quota),
22555 +       CTL_ENTRY(CTL_DEBUG_CVIRT,      debug_cvirt),
22556 +       CTL_ENTRY(CTL_DEBUG_SPACE,      debug_space),
22557 +       CTL_ENTRY(CTL_DEBUG_PERM,       debug_perm),
22558 +       CTL_ENTRY(CTL_DEBUG_MISC,       debug_misc),
22559 +       { 0 }
22560 +};
22561 +
22562 +static struct ctl_table vserver_root_table[] = {
22563 +       {
22564 +               .procname       = "vserver",
22565 +               .mode           = 0555,
22566 +               .child          = vserver_debug_table
22567 +       },
22568 +       { 0 }
22569 +};
22570 +
22571 +
22572 +static match_table_t tokens = {
22573 +       { CTL_DEBUG_SWITCH,     "switch=%x"     },
22574 +       { CTL_DEBUG_XID,        "xid=%x"        },
22575 +       { CTL_DEBUG_NID,        "nid=%x"        },
22576 +       { CTL_DEBUG_TAG,        "tag=%x"        },
22577 +       { CTL_DEBUG_NET,        "net=%x"        },
22578 +       { CTL_DEBUG_LIMIT,      "limit=%x"      },
22579 +       { CTL_DEBUG_CRES,       "cres=%x"       },
22580 +       { CTL_DEBUG_DLIM,       "dlim=%x"       },
22581 +       { CTL_DEBUG_QUOTA,      "quota=%x"      },
22582 +       { CTL_DEBUG_CVIRT,      "cvirt=%x"      },
22583 +       { CTL_DEBUG_SPACE,      "space=%x"      },
22584 +       { CTL_DEBUG_PERM,       "perm=%x"       },
22585 +       { CTL_DEBUG_MISC,       "misc=%x"       },
22586 +       { CTL_DEBUG_ERROR,      NULL            }
22587 +};
22588 +
22589 +#define        HANDLE_CASE(id, name, val)                              \
22590 +       case CTL_DEBUG_ ## id:                                  \
22591 +               vs_debug_ ## name = val;                        \
22592 +               printk("vs_debug_" #name "=0x%x\n", val);       \
22593 +               break
22594 +
22595 +
22596 +static int __init vs_debug_setup(char *str)
22597 +{
22598 +       char *p;
22599 +       int token;
22600 +
22601 +       printk("vs_debug_setup(%s)\n", str);
22602 +       while ((p = strsep(&str, ",")) != NULL) {
22603 +               substring_t args[MAX_OPT_ARGS];
22604 +               unsigned int value;
22605 +
22606 +               if (!*p)
22607 +                       continue;
22608 +
22609 +               token = match_token(p, tokens, args);
22610 +               value = (token > 0) ? simple_strtoul(args[0].from, NULL, 0) : 0;
22611 +
22612 +               switch (token) {
22613 +               HANDLE_CASE(SWITCH, switch, value);
22614 +               HANDLE_CASE(XID,    xid,    value);
22615 +               HANDLE_CASE(NID,    nid,    value);
22616 +               HANDLE_CASE(TAG,    tag,    value);
22617 +               HANDLE_CASE(NET,    net,    value);
22618 +               HANDLE_CASE(LIMIT,  limit,  value);
22619 +               HANDLE_CASE(CRES,   cres,   value);
22620 +               HANDLE_CASE(DLIM,   dlim,   value);
22621 +               HANDLE_CASE(QUOTA,  quota,  value);
22622 +               HANDLE_CASE(CVIRT,  cvirt,  value);
22623 +               HANDLE_CASE(SPACE,  space,  value);
22624 +               HANDLE_CASE(PERM,   perm,   value);
22625 +               HANDLE_CASE(MISC,   misc,   value);
22626 +               default:
22627 +                       return -EINVAL;
22628 +                       break;
22629 +               }
22630 +       }
22631 +       return 1;
22632 +}
22633 +
22634 +__setup("vsdebug=", vs_debug_setup);
22635 +
22636 +
22637 +
22638 +EXPORT_SYMBOL_GPL(vs_debug_switch);
22639 +EXPORT_SYMBOL_GPL(vs_debug_xid);
22640 +EXPORT_SYMBOL_GPL(vs_debug_nid);
22641 +EXPORT_SYMBOL_GPL(vs_debug_net);
22642 +EXPORT_SYMBOL_GPL(vs_debug_limit);
22643 +EXPORT_SYMBOL_GPL(vs_debug_cres);
22644 +EXPORT_SYMBOL_GPL(vs_debug_dlim);
22645 +EXPORT_SYMBOL_GPL(vs_debug_quota);
22646 +EXPORT_SYMBOL_GPL(vs_debug_cvirt);
22647 +EXPORT_SYMBOL_GPL(vs_debug_space);
22648 +EXPORT_SYMBOL_GPL(vs_debug_perm);
22649 +EXPORT_SYMBOL_GPL(vs_debug_misc);
22650 +
22651 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/tag.c linux-4.9/kernel/vserver/tag.c
22652 --- linux-4.9/kernel/vserver/tag.c      1970-01-01 01:00:00.000000000 +0100
22653 +++ linux-4.9/kernel/vserver/tag.c      2021-02-24 15:47:45.127744035 +0100
22654 @@ -0,0 +1,63 @@
22655 +/*
22656 + *  linux/kernel/vserver/tag.c
22657 + *
22658 + *  Virtual Server: Shallow Tag Space
22659 + *
22660 + *  Copyright (C) 2007  Herbert P?tzl
22661 + *
22662 + *  V0.01  basic implementation
22663 + *
22664 + */
22665 +
22666 +#include <linux/sched.h>
22667 +#include <linux/vserver/debug.h>
22668 +#include <linux/vs_pid.h>
22669 +#include <linux/vs_tag.h>
22670 +
22671 +#include <linux/vserver/tag_cmd.h>
22672 +
22673 +
22674 +int dx_migrate_task(struct task_struct *p, vtag_t tag)
22675 +{
22676 +       if (!p)
22677 +               BUG();
22678 +
22679 +       vxdprintk(VXD_CBIT(tag, 5),
22680 +               "dx_migrate_task(%p[#%d],#%d)", p, p->tag, tag);
22681 +
22682 +       task_lock(p);
22683 +       p->tag = tag;
22684 +       task_unlock(p);
22685 +
22686 +       vxdprintk(VXD_CBIT(tag, 5),
22687 +               "moved task %p into [#%d]", p, tag);
22688 +       return 0;
22689 +}
22690 +
22691 +/* vserver syscall commands below here */
22692 +
22693 +/* taks xid and vx_info functions */
22694 +
22695 +
22696 +int vc_task_tag(uint32_t id)
22697 +{
22698 +       vtag_t tag;
22699 +
22700 +       if (id) {
22701 +               struct task_struct *tsk;
22702 +               rcu_read_lock();
22703 +               tsk = find_task_by_real_pid(id);
22704 +               tag = (tsk) ? tsk->tag : -ESRCH;
22705 +               rcu_read_unlock();
22706 +       } else
22707 +               tag = dx_current_tag();
22708 +       return tag;
22709 +}
22710 +
22711 +
22712 +int vc_tag_migrate(uint32_t tag)
22713 +{
22714 +       return dx_migrate_task(current, tag & 0xFFFF);
22715 +}
22716 +
22717 +
22718 diff -urNp -x '*.orig' linux-4.9/kernel/vserver/vci_config.h linux-4.9/kernel/vserver/vci_config.h
22719 --- linux-4.9/kernel/vserver/vci_config.h       1970-01-01 01:00:00.000000000 +0100
22720 +++ linux-4.9/kernel/vserver/vci_config.h       2021-02-24 15:47:45.127744035 +0100
22721 @@ -0,0 +1,80 @@
22722 +
22723 +/*  interface version */
22724 +
22725 +#define VCI_VERSION            0x00020308
22726 +
22727 +
22728 +enum {
22729 +       VCI_KCBIT_NO_DYNAMIC = 0,
22730 +
22731 +       VCI_KCBIT_PROC_SECURE = 4,
22732 +       /* VCI_KCBIT_HARDCPU = 5, */
22733 +       /* VCI_KCBIT_IDLELIMIT = 6, */
22734 +       /* VCI_KCBIT_IDLETIME = 7, */
22735 +
22736 +       VCI_KCBIT_COWBL = 8,
22737 +       VCI_KCBIT_FULLCOWBL = 9,
22738 +       VCI_KCBIT_SPACES = 10,
22739 +       VCI_KCBIT_NETV2 = 11,
22740 +       VCI_KCBIT_MEMCG = 12,
22741 +       VCI_KCBIT_MEMCG_SWAP = 13,
22742 +
22743 +       VCI_KCBIT_DEBUG = 16,
22744 +       VCI_KCBIT_HISTORY = 20,
22745 +       VCI_KCBIT_TAGGED = 24,
22746 +       VCI_KCBIT_PPTAG = 28,
22747 +
22748 +       VCI_KCBIT_MORE = 31,
22749 +};
22750 +
22751 +
22752 +static inline uint32_t vci_kernel_config(void)
22753 +{
22754 +       return
22755 +       (1 << VCI_KCBIT_NO_DYNAMIC) |
22756 +
22757 +       /* configured features */
22758 +#ifdef CONFIG_VSERVER_PROC_SECURE
22759 +       (1 << VCI_KCBIT_PROC_SECURE) |
22760 +#endif
22761 +#ifdef CONFIG_VSERVER_COWBL
22762 +       (1 << VCI_KCBIT_COWBL) |
22763 +       (1 << VCI_KCBIT_FULLCOWBL) |
22764 +#endif
22765 +       (1 << VCI_KCBIT_SPACES) |
22766 +       (1 << VCI_KCBIT_NETV2) |
22767 +#ifdef CONFIG_MEMCG
22768 +       (1 << VCI_KCBIT_MEMCG) |
22769 +#endif
22770 +#ifdef CONFIG_MEMCG_SWAP
22771 +       (1 << VCI_KCBIT_MEMCG_SWAP) |
22772 +#endif
22773 +
22774 +       /* debug options */
22775 +#ifdef CONFIG_VSERVER_DEBUG
22776 +       (1 << VCI_KCBIT_DEBUG) |
22777 +#endif
22778 +#ifdef CONFIG_VSERVER_HISTORY
22779 +       (1 << VCI_KCBIT_HISTORY) |
22780 +#endif
22781 +
22782 +       /* inode context tagging */
22783 +#if    defined(CONFIG_TAGGING_NONE)
22784 +       (0 << VCI_KCBIT_TAGGED) |
22785 +#elif  defined(CONFIG_TAGGING_UID16)
22786 +       (1 << VCI_KCBIT_TAGGED) |
22787 +#elif  defined(CONFIG_TAGGING_GID16)
22788 +       (2 << VCI_KCBIT_TAGGED) |
22789 +#elif  defined(CONFIG_TAGGING_ID24)
22790 +       (3 << VCI_KCBIT_TAGGED) |
22791 +#elif  defined(CONFIG_TAGGING_INTERN)
22792 +       (4 << VCI_KCBIT_TAGGED) |
22793 +#elif  defined(CONFIG_TAGGING_RUNTIME)
22794 +       (5 << VCI_KCBIT_TAGGED) |
22795 +#else
22796 +       (7 << VCI_KCBIT_TAGGED) |
22797 +#endif
22798 +       (1 << VCI_KCBIT_PPTAG) |
22799 +       0;
22800 +}
22801 +
22802 diff -urNp -x '*.orig' linux-4.9/mm/memcontrol.c linux-4.9/mm/memcontrol.c
22803 --- linux-4.9/mm/memcontrol.c   2021-02-24 15:47:32.527349847 +0100
22804 +++ linux-4.9/mm/memcontrol.c   2021-02-24 15:47:45.127744035 +0100
22805 @@ -2873,6 +2873,41 @@ static u64 mem_cgroup_read_u64(struct cg
22806         }
22807  }
22808
22809 +unsigned long mem_cgroup_mem_usage_pages(struct mem_cgroup *memcg)
22810 +{
22811 +       return mem_cgroup_usage(memcg, false);
22812 +}
22813 +
22814 +unsigned long mem_cgroup_mem_limit_pages(struct mem_cgroup *memcg)
22815 +{
22816 +       return memcg->memory.limit;
22817 +}
22818 +
22819 +unsigned long mem_cgroup_memsw_usage_pages(struct mem_cgroup *memcg)
22820 +{
22821 +       return mem_cgroup_usage(memcg, true);
22822 +}
22823 +
22824 +unsigned long mem_cgroup_memsw_limit_pages(struct mem_cgroup *memcg)
22825 +{
22826 +       return memcg->memsw.limit;
22827 +}
22828 +
22829 +void dump_mem_cgroup(struct mem_cgroup *memcg)
22830 +{
22831 +       printk(KERN_INFO "memcg: %p/%d:\n"
22832 +               "\tmemory:\t%lu/%lu %lu/%lu\n"
22833 +               "\tmemsw:\t%lu/%lu %lu/%lu\n"
22834 +               "\tkmem:\t%lu/%lu %lu/%lu\n",
22835 +               memcg, memcg->id.id,
22836 +               page_counter_read(&memcg->memory), memcg->memory.limit,
22837 +               memcg->memory.watermark, memcg->memory.failcnt,
22838 +               page_counter_read(&memcg->memsw), memcg->memsw.limit,
22839 +               memcg->memsw.watermark, memcg->memsw.failcnt,
22840 +               page_counter_read(&memcg->kmem), memcg->kmem.limit,
22841 +               memcg->kmem.watermark, memcg->kmem.failcnt);
22842 +}
22843 +
22844  #ifndef CONFIG_SLOB
22845  static int memcg_online_kmem(struct mem_cgroup *memcg)
22846  {
22847 diff -urNp -x '*.orig' linux-4.9/mm/oom_kill.c linux-4.9/mm/oom_kill.c
22848 --- linux-4.9/mm/oom_kill.c     2021-02-24 15:47:32.534016722 +0100
22849 +++ linux-4.9/mm/oom_kill.c     2021-02-24 15:47:45.127744035 +0100
22850 @@ -38,6 +38,8 @@
22851  #include <linux/kthread.h>
22852  #include <linux/init.h>
22853  #include <linux/mmu_notifier.h>
22854 +#include <linux/reboot.h>
22855 +#include <linux/vs_context.h>
22856
22857  #include <asm/tlb.h>
22858  #include "internal.h"
22859 @@ -142,11 +144,18 @@ static inline bool is_memcg_oom(struct o
22860  static bool oom_unkillable_task(struct task_struct *p,
22861                 struct mem_cgroup *memcg, const nodemask_t *nodemask)
22862  {
22863 -       if (is_global_init(p))
22864 +       unsigned xid = vx_current_xid();
22865 +
22866 +       /* skip the init task, global and per guest */
22867 +       if (task_is_init(p))
22868                 return true;
22869         if (p->flags & PF_KTHREAD)
22870                 return true;
22871
22872 +       /* skip other guest and host processes if oom in guest */
22873 +       if (xid && vx_task_xid(p) != xid)
22874 +               return true;
22875 +
22876         /* When mem_cgroup_out_of_memory() and p is not member of the group */
22877         if (memcg && !task_in_mem_cgroup(p, memcg))
22878                 return true;
22879 @@ -851,8 +860,8 @@ static void oom_kill_process(struct oom_
22880         if (__ratelimit(&oom_rs))
22881                 dump_header(oc, p);
22882
22883 -       pr_err("%s: Kill process %d (%s) score %u or sacrifice child\n",
22884 -               message, task_pid_nr(p), p->comm, points);
22885 +       pr_err("%s: Kill process %d:#%u (%s) score %d or sacrifice child\n",
22886 +               message, task_pid_nr(p), p->xid, p->comm, points);
22887
22888         /*
22889          * If any of p's children has a different mm and is eligible for kill,
22890 @@ -910,8 +919,8 @@ static void oom_kill_process(struct oom_
22891          */
22892         do_send_sig_info(SIGKILL, SEND_SIG_FORCED, victim, true);
22893         mark_oom_victim(victim);
22894 -       pr_err("Killed process %d (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n",
22895 -               task_pid_nr(victim), victim->comm, K(victim->mm->total_vm),
22896 +       pr_err("Killed process %d:%u (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n",
22897 +               task_pid_nr(victim), victim->xid, victim->comm, K(victim->mm->total_vm),
22898                 K(get_mm_counter(victim->mm, MM_ANONPAGES)),
22899                 K(get_mm_counter(victim->mm, MM_FILEPAGES)),
22900                 K(get_mm_counter(victim->mm, MM_SHMEMPAGES)));
22901 @@ -958,6 +967,8 @@ static void oom_kill_process(struct oom_
22902  }
22903  #undef K
22904
22905 +long vs_oom_action(unsigned int);
22906 +
22907  /*
22908   * Determines whether the kernel must panic because of the panic_on_oom sysctl.
22909   */
22910 @@ -1063,7 +1074,12 @@ bool out_of_memory(struct oom_control *o
22911         /* Found nothing?!?! Either we hang forever, or we panic. */
22912         if (!oc->chosen && !is_sysrq_oom(oc) && !is_memcg_oom(oc)) {
22913                 dump_header(oc, NULL);
22914 -               panic("Out of memory and no killable processes...\n");
22915 +
22916 +               /* avoid panic for guest OOM */
22917 +               if (vx_current_xid())
22918 +                       vs_oom_action(LINUX_REBOOT_CMD_OOM);
22919 +               else
22920 +                       panic("Out of memory and no killable processes...\n");
22921         }
22922         if (oc->chosen && oc->chosen != (void *)-1UL) {
22923                 oom_kill_process(oc, !is_memcg_oom(oc) ? "Out of memory" :
22924 diff -urNp -x '*.orig' linux-4.9/mm/page_alloc.c linux-4.9/mm/page_alloc.c
22925 --- linux-4.9/mm/page_alloc.c   2021-02-24 15:47:32.534016722 +0100
22926 +++ linux-4.9/mm/page_alloc.c   2021-02-24 15:47:45.127744035 +0100
22927 @@ -65,6 +65,8 @@
22928  #include <linux/kthread.h>
22929  #include <linux/memcontrol.h>
22930  #include <linux/khugepaged.h>
22931 +#include <linux/vs_base.h>
22932 +#include <linux/vs_limit.h>
22933
22934  #include <asm/sections.h>
22935  #include <asm/tlbflush.h>
22936 @@ -4171,14 +4173,17 @@ long si_mem_available(void)
22937          */
22938         pagecache = pages[LRU_ACTIVE_FILE] + pages[LRU_INACTIVE_FILE];
22939         pagecache -= min(pagecache / 2, wmark_low);
22940 -       available += pagecache;
22941 +       if (!vx_flags(VXF_VIRT_MEM, 0))
22942 +               available += pagecache;
22943
22944         /*
22945          * Part of the reclaimable slab consists of items that are in use,
22946          * and cannot be freed. Cap this estimate at the low watermark.
22947          */
22948 -       available += global_page_state(NR_SLAB_RECLAIMABLE) -
22949 -                    min(global_page_state(NR_SLAB_RECLAIMABLE) / 2, wmark_low);
22950 +       if (!vx_flags(VXF_VIRT_MEM, 0))
22951 +               available += global_page_state(NR_SLAB_RECLAIMABLE) -
22952 +                            min(global_page_state(NR_SLAB_RECLAIMABLE) / 2,
22953 +                                wmark_low);
22954
22955         if (available < 0)
22956                 available = 0;
22957 @@ -4195,6 +4200,9 @@ void si_meminfo(struct sysinfo *val)
22958         val->totalhigh = totalhigh_pages;
22959         val->freehigh = nr_free_highpages();
22960         val->mem_unit = PAGE_SIZE;
22961 +
22962 +       if (vx_flags(VXF_VIRT_MEM, 0))
22963 +               vx_vsi_meminfo(val);
22964  }
22965
22966  EXPORT_SYMBOL(si_meminfo);
22967 @@ -4229,6 +4237,9 @@ void si_meminfo_node(struct sysinfo *val
22968         val->freehigh = free_highpages;
22969  #endif
22970         val->mem_unit = PAGE_SIZE;
22971 +
22972 +       if (vx_flags(VXF_VIRT_MEM, 0))
22973 +               vx_vsi_meminfo(val);
22974  }
22975  #endif
22976
22977 diff -urNp -x '*.orig' linux-4.9/mm/pgtable-generic.c linux-4.9/mm/pgtable-generic.c
22978 --- linux-4.9/mm/pgtable-generic.c      2016-12-11 20:17:54.000000000 +0100
22979 +++ linux-4.9/mm/pgtable-generic.c      2021-02-24 15:47:45.127744035 +0100
22980 @@ -6,6 +6,8 @@
22981   *  Copyright (C) 2010  Linus Torvalds
22982   */
22983
22984 +#include <linux/mm.h>
22985 +
22986  #include <linux/pagemap.h>
22987  #include <asm/tlb.h>
22988  #include <asm-generic/pgtable.h>
22989 diff -urNp -x '*.orig' linux-4.9/mm/shmem.c linux-4.9/mm/shmem.c
22990 --- linux-4.9/mm/shmem.c        2021-02-24 15:47:32.537350160 +0100
22991 +++ linux-4.9/mm/shmem.c        2021-02-24 15:47:45.127744035 +0100
22992 @@ -2806,7 +2806,7 @@ static int shmem_statfs(struct dentry *d
22993  {
22994         struct shmem_sb_info *sbinfo = SHMEM_SB(dentry->d_sb);
22995
22996 -       buf->f_type = TMPFS_MAGIC;
22997 +       buf->f_type = TMPFS_SUPER_MAGIC;
22998         buf->f_bsize = PAGE_SIZE;
22999         buf->f_namelen = NAME_MAX;
23000         if (sbinfo->max_blocks) {
23001 @@ -3631,7 +3631,7 @@ int shmem_fill_super(struct super_block
23002         sb->s_maxbytes = MAX_LFS_FILESIZE;
23003         sb->s_blocksize = PAGE_SIZE;
23004         sb->s_blocksize_bits = PAGE_SHIFT;
23005 -       sb->s_magic = TMPFS_MAGIC;
23006 +       sb->s_magic = TMPFS_SUPER_MAGIC;
23007         sb->s_op = &shmem_ops;
23008         sb->s_time_gran = 1;
23009  #ifdef CONFIG_TMPFS_XATTR
23010 diff -urNp -x '*.orig' linux-4.9/mm/slab.c linux-4.9/mm/slab.c
23011 --- linux-4.9/mm/slab.c 2021-02-24 15:47:32.537350160 +0100
23012 +++ linux-4.9/mm/slab.c 2021-02-24 15:47:45.131077472 +0100
23013 @@ -307,6 +307,8 @@ static void kmem_cache_node_init(struct
23014  #define STATS_INC_FREEMISS(x)  do { } while (0)
23015  #endif
23016
23017 +#include "slab_vs.h"
23018 +
23019  #if DEBUG
23020
23021  /*
23022 @@ -3344,6 +3346,7 @@ slab_alloc_node(struct kmem_cache *cache
23023         /* ___cache_alloc_node can fall back to other nodes */
23024         ptr = ____cache_alloc_node(cachep, flags, nodeid);
23025    out:
23026 +       vx_slab_alloc(cachep, flags);
23027         local_irq_restore(save_flags);
23028         ptr = cache_alloc_debugcheck_after(cachep, flags, ptr, caller);
23029
23030 @@ -3525,6 +3528,7 @@ void ___cache_free(struct kmem_cache *ca
23031         check_irq_off();
23032         kmemleak_free_recursive(objp, cachep->flags);
23033         objp = cache_free_debugcheck(cachep, objp, caller);
23034 +       vx_slab_free(cachep);
23035
23036         kmemcheck_slab_free(cachep, objp, cachep->object_size);
23037
23038 diff -urNp -x '*.orig' linux-4.9/mm/slab_vs.h linux-4.9/mm/slab_vs.h
23039 --- linux-4.9/mm/slab_vs.h      1970-01-01 01:00:00.000000000 +0100
23040 +++ linux-4.9/mm/slab_vs.h      2021-02-24 15:47:45.131077472 +0100
23041 @@ -0,0 +1,29 @@
23042 +
23043 +#include <linux/vserver/context.h>
23044 +
23045 +#include <linux/vs_context.h>
23046 +
23047 +static inline
23048 +void vx_slab_alloc(struct kmem_cache *cachep, gfp_t flags)
23049 +{
23050 +       int what = gfp_zone(cachep->allocflags);
23051 +       struct vx_info *vxi = current_vx_info();
23052 +
23053 +       if (!vxi)
23054 +               return;
23055 +
23056 +       atomic_add(cachep->size, &vxi->cacct.slab[what]);
23057 +}
23058 +
23059 +static inline
23060 +void vx_slab_free(struct kmem_cache *cachep)
23061 +{
23062 +       int what = gfp_zone(cachep->allocflags);
23063 +       struct vx_info *vxi = current_vx_info();
23064 +
23065 +       if (!vxi)
23066 +               return;
23067 +
23068 +       atomic_sub(cachep->size, &vxi->cacct.slab[what]);
23069 +}
23070 +
23071 diff -urNp -x '*.orig' linux-4.9/mm/swapfile.c linux-4.9/mm/swapfile.c
23072 --- linux-4.9/mm/swapfile.c     2021-02-24 15:47:32.540683597 +0100
23073 +++ linux-4.9/mm/swapfile.c     2021-02-24 15:47:45.131077472 +0100
23074 @@ -39,6 +39,7 @@
23075  #include <asm/tlbflush.h>
23076  #include <linux/swapops.h>
23077  #include <linux/swap_cgroup.h>
23078 +#include <linux/vs_base.h>
23079
23080  static bool swap_count_continued(struct swap_info_struct *, pgoff_t,
23081                                  unsigned char);
23082 @@ -2083,6 +2084,16 @@ static int swap_show(struct seq_file *sw
23083
23084         if (si == SEQ_START_TOKEN) {
23085                 seq_puts(swap,"Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n");
23086 +               if (vx_flags(VXF_VIRT_MEM, 0)) {
23087 +                       struct sysinfo si = { 0 };
23088 +
23089 +                       vx_vsi_swapinfo(&si);
23090 +                       if (si.totalswap < (1 << 10))
23091 +                               return 0;
23092 +                       seq_printf(swap, "%s\t\t\t\t\t%s\t%lu\t%lu\t%d\n",
23093 +                               "hdv0", "partition", si.totalswap >> 10,
23094 +                               (si.totalswap - si.freeswap) >> 10, -1);
23095 +               }
23096                 return 0;
23097         }
23098
23099 @@ -2630,6 +2641,8 @@ void si_swapinfo(struct sysinfo *val)
23100         val->freeswap = atomic_long_read(&nr_swap_pages) + nr_to_be_unused;
23101         val->totalswap = total_swap_pages + nr_to_be_unused;
23102         spin_unlock(&swap_lock);
23103 +       if (vx_flags(VXF_VIRT_MEM, 0))
23104 +               vx_vsi_swapinfo(val);
23105  }
23106
23107  /*
23108 diff -urNp -x '*.orig' linux-4.9/net/bridge/br_multicast.c linux-4.9/net/bridge/br_multicast.c
23109 --- linux-4.9/net/bridge/br_multicast.c 2021-02-24 15:47:32.564017661 +0100
23110 +++ linux-4.9/net/bridge/br_multicast.c 2021-02-24 15:47:45.131077472 +0100
23111 @@ -465,7 +465,7 @@ static struct sk_buff *br_ip6_multicast_
23112         ip6h->hop_limit = 1;
23113         ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1));
23114         if (ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0,
23115 -                              &ip6h->saddr)) {
23116 +                              &ip6h->saddr, NULL)) {
23117                 kfree_skb(skb);
23118                 br->has_ipv6_addr = 0;
23119                 return NULL;
23120 diff -urNp -x '*.orig' linux-4.9/net/core/dev.c linux-4.9/net/core/dev.c
23121 --- linux-4.9/net/core/dev.c    2021-02-24 15:47:33.077367054 +0100
23122 +++ linux-4.9/net/core/dev.c    2021-02-24 15:47:45.131077472 +0100
23123 @@ -127,6 +127,7 @@
23124  #include <linux/in.h>
23125  #include <linux/jhash.h>
23126  #include <linux/random.h>
23127 +#include <linux/vs_inet.h>
23128  #include <trace/events/napi.h>
23129  #include <trace/events/net.h>
23130  #include <trace/events/skb.h>
23131 @@ -734,7 +735,8 @@ struct net_device *__dev_get_by_name(str
23132         struct hlist_head *head = dev_name_hash(net, name);
23133
23134         hlist_for_each_entry(dev, head, name_hlist)
23135 -               if (!strncmp(dev->name, name, IFNAMSIZ))
23136 +               if (!strncmp(dev->name, name, IFNAMSIZ) &&
23137 +                   nx_dev_visible(current_nx_info(), dev))
23138                         return dev;
23139
23140         return NULL;
23141 @@ -759,7 +761,8 @@ struct net_device *dev_get_by_name_rcu(s
23142         struct hlist_head *head = dev_name_hash(net, name);
23143
23144         hlist_for_each_entry_rcu(dev, head, name_hlist)
23145 -               if (!strncmp(dev->name, name, IFNAMSIZ))
23146 +               if (!strncmp(dev->name, name, IFNAMSIZ) &&
23147 +                   nx_dev_visible(current_nx_info(), dev))
23148                         return dev;
23149
23150         return NULL;
23151 @@ -809,7 +812,8 @@ struct net_device *__dev_get_by_index(st
23152         struct hlist_head *head = dev_index_hash(net, ifindex);
23153
23154         hlist_for_each_entry(dev, head, index_hlist)
23155 -               if (dev->ifindex == ifindex)
23156 +               if ((dev->ifindex == ifindex) &&
23157 +                   nx_dev_visible(current_nx_info(), dev))
23158                         return dev;
23159
23160         return NULL;
23161 @@ -827,7 +831,7 @@ EXPORT_SYMBOL(__dev_get_by_index);
23162   *     about locking. The caller must hold RCU lock.
23163   */
23164
23165 -struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
23166 +struct net_device *dev_get_by_index_real_rcu(struct net *net, int ifindex)
23167  {
23168         struct net_device *dev;
23169         struct hlist_head *head = dev_index_hash(net, ifindex);
23170 @@ -838,6 +842,16 @@ struct net_device *dev_get_by_index_rcu(
23171
23172         return NULL;
23173  }
23174 +EXPORT_SYMBOL(dev_get_by_index_real_rcu);
23175 +
23176 +struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
23177 +{
23178 +       struct net_device *dev = dev_get_by_index_real_rcu(net, ifindex);
23179 +
23180 +       if (nx_dev_visible(current_nx_info(), dev))
23181 +               return dev;
23182 +       return NULL;
23183 +}
23184  EXPORT_SYMBOL(dev_get_by_index_rcu);
23185
23186
23187 @@ -915,7 +929,8 @@ struct net_device *dev_getbyhwaddr_rcu(s
23188
23189         for_each_netdev_rcu(net, dev)
23190                 if (dev->type == type &&
23191 -                   !memcmp(dev->dev_addr, ha, dev->addr_len))
23192 +                   !memcmp(dev->dev_addr, ha, dev->addr_len) &&
23193 +                   nx_dev_visible(current_nx_info(), dev))
23194                         return dev;
23195
23196         return NULL;
23197 @@ -927,9 +942,11 @@ struct net_device *__dev_getfirstbyhwtyp
23198         struct net_device *dev;
23199
23200         ASSERT_RTNL();
23201 -       for_each_netdev(net, dev)
23202 -               if (dev->type == type)
23203 +       for_each_netdev(net, dev) {
23204 +               if ((dev->type == type) &&
23205 +                   nx_dev_visible(current_nx_info(), dev))
23206                         return dev;
23207 +       }
23208
23209         return NULL;
23210  }
23211 @@ -941,7 +958,8 @@ struct net_device *dev_getfirstbyhwtype(
23212
23213         rcu_read_lock();
23214         for_each_netdev_rcu(net, dev)
23215 -               if (dev->type == type) {
23216 +               if ((dev->type == type) &&
23217 +                   nx_dev_visible(current_nx_info(), dev)) {
23218                         dev_hold(dev);
23219                         ret = dev;
23220                         break;
23221 @@ -971,7 +989,8 @@ struct net_device *__dev_get_by_flags(st
23222
23223         ret = NULL;
23224         for_each_netdev(net, dev) {
23225 -               if (((dev->flags ^ if_flags) & mask) == 0) {
23226 +               if ((((dev->flags ^ if_flags) & mask) == 0) &&
23227 +                       nx_dev_visible(current_nx_info(), dev)) {
23228                         ret = dev;
23229                         break;
23230                 }
23231 @@ -1049,6 +1068,8 @@ static int __dev_alloc_name(struct net *
23232                                 continue;
23233                         if (i < 0 || i >= max_netdevices)
23234                                 continue;
23235 +                       if (!nx_dev_visible(current_nx_info(), d))
23236 +                               continue;
23237
23238                         /*  avoid cases where sscanf is not exact inverse of printf */
23239                         snprintf(buf, IFNAMSIZ, name, i);
23240 diff -urNp -x '*.orig' linux-4.9/net/core/net-procfs.c linux-4.9/net/core/net-procfs.c
23241 --- linux-4.9/net/core/net-procfs.c     2016-12-11 20:17:54.000000000 +0100
23242 +++ linux-4.9/net/core/net-procfs.c     2021-02-24 15:47:45.131077472 +0100
23243 @@ -1,6 +1,7 @@
23244  #include <linux/netdevice.h>
23245  #include <linux/proc_fs.h>
23246  #include <linux/seq_file.h>
23247 +#include <linux/vs_inet.h>
23248  #include <net/wext.h>
23249
23250  #define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
23251 @@ -77,8 +78,13 @@ static void dev_seq_stop(struct seq_file
23252  static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
23253  {
23254         struct rtnl_link_stats64 temp;
23255 -       const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
23256 +       const struct rtnl_link_stats64 *stats;
23257
23258 +       /* device visible inside network context? */
23259 +       if (!nx_dev_visible(current_nx_info(), dev))
23260 +               return;
23261 +
23262 +       stats = dev_get_stats(dev, &temp);
23263         seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
23264                    "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
23265                    dev->name, stats->rx_bytes, stats->rx_packets,
23266 diff -urNp -x '*.orig' linux-4.9/net/core/rtnetlink.c linux-4.9/net/core/rtnetlink.c
23267 --- linux-4.9/net/core/rtnetlink.c      2021-02-24 15:47:32.577351411 +0100
23268 +++ linux-4.9/net/core/rtnetlink.c      2021-02-24 15:47:45.134410910 +0100
23269 @@ -1615,6 +1615,8 @@ static int rtnl_dump_ifinfo(struct sk_bu
23270                                 goto cont;
23271                         if (idx < s_idx)
23272                                 goto cont;
23273 +                       if (!nx_dev_visible(skb->sk->sk_nx_info, dev))
23274 +                               continue;
23275                         err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
23276                                                NETLINK_CB(cb->skb).portid,
23277                                                cb->nlh->nlmsg_seq, 0,
23278 @@ -2841,6 +2843,9 @@ void rtmsg_ifinfo(int type, struct net_d
23279  {
23280         struct sk_buff *skb;
23281
23282 +       if (!nx_dev_visible(current_nx_info(), dev))
23283 +               return;
23284 +
23285         if (dev->reg_state != NETREG_REGISTERED)
23286                 return;
23287
23288 diff -urNp -x '*.orig' linux-4.9/net/core/sock.c linux-4.9/net/core/sock.c
23289 --- linux-4.9/net/core/sock.c   2021-02-24 15:47:32.580684849 +0100
23290 +++ linux-4.9/net/core/sock.c   2021-02-24 15:47:45.134410910 +0100
23291 @@ -135,6 +135,10 @@
23292
23293  #include <linux/filter.h>
23294  #include <net/sock_reuseport.h>
23295 +#include <linux/vs_socket.h>
23296 +#include <linux/vs_limit.h>
23297 +#include <linux/vs_context.h>
23298 +#include <linux/vs_network.h>
23299
23300  #include <trace/events/sock.h>
23301
23302 @@ -1339,6 +1343,9 @@ static struct sock *sk_prot_alloc(struct
23303                 if (!try_module_get(prot->owner))
23304                         goto out_free_sec;
23305                 sk_tx_queue_clear(sk);
23306 +
23307 +               sock_vx_init(sk);
23308 +               sock_nx_init(sk);
23309         }
23310
23311         return sk;
23312 @@ -1444,6 +1451,11 @@ static void __sk_destruct(struct rcu_hea
23313         put_pid(sk->sk_peer_pid);
23314         if (likely(sk->sk_net_refcnt))
23315                 put_net(sock_net(sk));
23316 +       vx_sock_dec(sk);
23317 +       clr_vx_info(&sk->sk_vx_info);
23318 +       sk->sk_xid = -1;
23319 +       clr_nx_info(&sk->sk_nx_info);
23320 +       sk->sk_nid = -1;
23321         sk_prot_free(sk->sk_prot_creator, sk);
23322  }
23323
23324 @@ -1505,6 +1517,8 @@ struct sock *sk_clone_lock(const struct
23325                 /* SANITY */
23326                 if (likely(newsk->sk_net_refcnt))
23327                         get_net(sock_net(newsk));
23328 +               sock_vx_init(newsk);
23329 +               sock_nx_init(newsk);
23330                 sk_node_init(&newsk->sk_node);
23331                 sock_lock_init(newsk);
23332                 bh_lock_sock(newsk);
23333 @@ -1575,6 +1589,12 @@ struct sock *sk_clone_lock(const struct
23334                 smp_wmb();
23335                 atomic_set(&newsk->sk_refcnt, 2);
23336
23337 +               set_vx_info(&newsk->sk_vx_info, sk->sk_vx_info);
23338 +               newsk->sk_xid = sk->sk_xid;
23339 +               vx_sock_inc(newsk);
23340 +               set_nx_info(&newsk->sk_nx_info, sk->sk_nx_info);
23341 +               newsk->sk_nid = sk->sk_nid;
23342 +
23343                 /*
23344                  * Increment the counter in the same struct proto as the master
23345                  * sock (sk_refcnt_debug_inc uses newsk->sk_prot->socks, that
23346 @@ -2500,6 +2520,12 @@ void sock_init_data(struct socket *sock,
23347         seqlock_init(&sk->sk_stamp_seq);
23348  #endif
23349
23350 +       set_vx_info(&sk->sk_vx_info, current_vx_info());
23351 +       sk->sk_xid = vx_current_xid();
23352 +       vx_sock_inc(sk);
23353 +       set_nx_info(&sk->sk_nx_info, current_nx_info());
23354 +       sk->sk_nid = nx_current_nid();
23355 +
23356  #ifdef CONFIG_NET_RX_BUSY_POLL
23357         sk->sk_napi_id          =       0;
23358         sk->sk_ll_usec          =       sysctl_net_busy_read;
23359 diff -urNp -x '*.orig' linux-4.9/net/ipv4/af_inet.c linux-4.9/net/ipv4/af_inet.c
23360 --- linux-4.9/net/ipv4/af_inet.c        2021-02-24 15:47:32.587351724 +0100
23361 +++ linux-4.9/net/ipv4/af_inet.c        2021-02-24 15:47:45.134410910 +0100
23362 @@ -303,10 +303,15 @@ lookup_protocol:
23363         }
23364
23365         err = -EPERM;
23366 +       if ((protocol == IPPROTO_ICMP) &&
23367 +               nx_capable(CAP_NET_RAW, NXC_RAW_ICMP))
23368 +               goto override;
23369 +
23370         if (sock->type == SOCK_RAW && !kern &&
23371             !ns_capable(net->user_ns, CAP_NET_RAW))
23372                 goto out_rcu_unlock;
23373
23374 +override:
23375         sock->ops = answer->ops;
23376         answer_prot = answer->prot;
23377         answer_flags = answer->flags;
23378 @@ -424,6 +429,7 @@ int inet_bind(struct socket *sock, struc
23379         struct sock *sk = sock->sk;
23380         struct inet_sock *inet = inet_sk(sk);
23381         struct net *net = sock_net(sk);
23382 +       struct nx_v4_sock_addr nsa;
23383         unsigned short snum;
23384         int chk_addr_ret;
23385         u32 tb_id = RT_TABLE_LOCAL;
23386 @@ -449,7 +455,11 @@ int inet_bind(struct socket *sock, struc
23387         }
23388
23389         tb_id = l3mdev_fib_table_by_index(net, sk->sk_bound_dev_if) ? : tb_id;
23390 -       chk_addr_ret = inet_addr_type_table(net, addr->sin_addr.s_addr, tb_id);
23391 +       err = v4_map_sock_addr(inet, addr, &nsa);
23392 +       if (err)
23393 +               goto out;
23394 +
23395 +       chk_addr_ret = inet_addr_type_table(net, nsa.saddr, tb_id);
23396
23397         /* Not specified by any standard per-se, however it breaks too
23398          * many applications when removed.  It is unfortunate since
23399 @@ -461,7 +471,7 @@ int inet_bind(struct socket *sock, struc
23400         err = -EADDRNOTAVAIL;
23401         if (!net->ipv4.sysctl_ip_nonlocal_bind &&
23402             !(inet->freebind || inet->transparent) &&
23403 -           addr->sin_addr.s_addr != htonl(INADDR_ANY) &&
23404 +           nsa.saddr != htonl(INADDR_ANY) &&
23405             chk_addr_ret != RTN_LOCAL &&
23406             chk_addr_ret != RTN_MULTICAST &&
23407             chk_addr_ret != RTN_BROADCAST)
23408 @@ -487,7 +497,7 @@ int inet_bind(struct socket *sock, struc
23409         if (sk->sk_state != TCP_CLOSE || inet->inet_num)
23410                 goto out_release_sock;
23411
23412 -       inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
23413 +       v4_set_sock_addr(inet, &nsa);
23414         if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
23415                 inet->inet_saddr = 0;  /* Use device */
23416
23417 @@ -706,11 +716,13 @@ int inet_getname(struct socket *sock, st
23418                      peer == 1))
23419                         return -ENOTCONN;
23420                 sin->sin_port = inet->inet_dport;
23421 -               sin->sin_addr.s_addr = inet->inet_daddr;
23422 +               sin->sin_addr.s_addr =
23423 +                       nx_map_sock_lback(sk->sk_nx_info, inet->inet_daddr);
23424         } else {
23425                 __be32 addr = inet->inet_rcv_saddr;
23426                 if (!addr)
23427                         addr = inet->inet_saddr;
23428 +               addr = nx_map_sock_lback(sk->sk_nx_info, addr);
23429                 sin->sin_port = inet->inet_sport;
23430                 sin->sin_addr.s_addr = addr;
23431         }
23432 @@ -894,6 +906,7 @@ static int inet_compat_ioctl(struct sock
23433         return err;
23434  }
23435  #endif
23436 +#include <linux/vs_limit.h>
23437
23438  const struct proto_ops inet_stream_ops = {
23439         .family            = PF_INET,
23440 diff -urNp -x '*.orig' linux-4.9/net/ipv4/arp.c linux-4.9/net/ipv4/arp.c
23441 --- linux-4.9/net/ipv4/arp.c    2021-02-24 15:47:32.587351724 +0100
23442 +++ linux-4.9/net/ipv4/arp.c    2021-02-24 15:47:45.134410910 +0100
23443 @@ -1320,6 +1320,7 @@ static void arp_format_neigh_entry(struc
23444         struct net_device *dev = n->dev;
23445         int hatype = dev->type;
23446
23447 +       /* FIXME: check for network context */
23448         read_lock(&n->lock);
23449         /* Convert hardware address to XX:XX:XX:XX ... form. */
23450  #if IS_ENABLED(CONFIG_AX25)
23451 @@ -1351,6 +1352,7 @@ static void arp_format_pneigh_entry(stru
23452         int hatype = dev ? dev->type : 0;
23453         char tbuf[16];
23454
23455 +       /* FIXME: check for network context */
23456         sprintf(tbuf, "%pI4", n->key);
23457         seq_printf(seq, "%-16s 0x%-10x0x%-10x%s     *        %s\n",
23458                    tbuf, hatype, ATF_PUBL | ATF_PERM, "00:00:00:00:00:00",
23459 diff -urNp -x '*.orig' linux-4.9/net/ipv4/devinet.c linux-4.9/net/ipv4/devinet.c
23460 --- linux-4.9/net/ipv4/devinet.c        2021-02-24 15:47:32.587351724 +0100
23461 +++ linux-4.9/net/ipv4/devinet.c        2021-02-24 15:47:45.134410910 +0100
23462 @@ -547,6 +547,7 @@ struct in_device *inetdev_by_index(struc
23463  }
23464  EXPORT_SYMBOL(inetdev_by_index);
23465
23466 +
23467  /* Called only from RTNL semaphored context. No locks. */
23468
23469  struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,
23470 @@ -1006,6 +1007,8 @@ int devinet_ioctl(struct net *net, unsig
23471
23472         in_dev = __in_dev_get_rtnl(dev);
23473         if (in_dev) {
23474 +               struct nx_info *nxi = current_nx_info();
23475 +
23476                 if (tryaddrmatch) {
23477                         /* Matthias Andree */
23478                         /* compare label and address (4.4BSD style) */
23479 @@ -1014,6 +1017,8 @@ int devinet_ioctl(struct net *net, unsig
23480                            This is checked above. */
23481                         for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
23482                              ifap = &ifa->ifa_next) {
23483 +                               if (!nx_v4_ifa_visible(nxi, ifa))
23484 +                                       continue;
23485                                 if (!strcmp(ifr.ifr_name, ifa->ifa_label) &&
23486                                     sin_orig.sin_addr.s_addr ==
23487                                                         ifa->ifa_local) {
23488 @@ -1026,9 +1031,12 @@ int devinet_ioctl(struct net *net, unsig
23489                    comparing just the label */
23490                 if (!ifa) {
23491                         for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
23492 -                            ifap = &ifa->ifa_next)
23493 +                            ifap = &ifa->ifa_next) {
23494 +                               if (!nx_v4_ifa_visible(nxi, ifa))
23495 +                                       continue;
23496                                 if (!strcmp(ifr.ifr_name, ifa->ifa_label))
23497                                         break;
23498 +                       }
23499                 }
23500         }
23501
23502 @@ -1182,6 +1190,8 @@ static int inet_gifconf(struct net_devic
23503                 goto out;
23504
23505         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
23506 +               if (!nx_v4_ifa_visible(current_nx_info(), ifa))
23507 +                       continue;
23508                 if (!buf) {
23509                         done += sizeof(ifr);
23510                         continue;
23511 @@ -1604,6 +1614,7 @@ static int inet_dump_ifaddr(struct sk_bu
23512         struct net_device *dev;
23513         struct in_device *in_dev;
23514         struct in_ifaddr *ifa;
23515 +       struct sock *sk = skb->sk;
23516         struct hlist_head *head;
23517
23518         s_h = cb->args[0];
23519 @@ -1627,6 +1638,8 @@ static int inet_dump_ifaddr(struct sk_bu
23520
23521                         for (ifa = in_dev->ifa_list, ip_idx = 0; ifa;
23522                              ifa = ifa->ifa_next, ip_idx++) {
23523 +                       if (sk && !nx_v4_ifa_visible(sk->sk_nx_info, ifa))
23524 +                               continue;
23525                                 if (ip_idx < s_ip_idx)
23526                                         continue;
23527                                 if (inet_fill_ifaddr(skb, ifa,
23528 diff -urNp -x '*.orig' linux-4.9/net/ipv4/fib_trie.c linux-4.9/net/ipv4/fib_trie.c
23529 --- linux-4.9/net/ipv4/fib_trie.c       2021-02-24 15:47:32.590685161 +0100
23530 +++ linux-4.9/net/ipv4/fib_trie.c       2021-02-24 15:47:45.134410910 +0100
23531 @@ -2630,6 +2630,7 @@ static int fib_route_seq_show(struct seq
23532
23533                 seq_setwidth(seq, 127);
23534
23535 +               /* FIXME: check for network context? */
23536                 if (fi)
23537                         seq_printf(seq,
23538                                    "%s\t%08X\t%08X\t%04X\t%d\t%u\t"
23539 diff -urNp -x '*.orig' linux-4.9/net/ipv4/inet_connection_sock.c linux-4.9/net/ipv4/inet_connection_sock.c
23540 --- linux-4.9/net/ipv4/inet_connection_sock.c   2021-02-24 15:47:32.590685161 +0100
23541 +++ linux-4.9/net/ipv4/inet_connection_sock.c   2021-02-24 15:47:45.134410910 +0100
23542 @@ -16,6 +16,7 @@
23543  #include <linux/module.h>
23544  #include <linux/jhash.h>
23545
23546 +#include <net/addrconf.h>
23547  #include <net/inet_connection_sock.h>
23548  #include <net/inet_hashtables.h>
23549  #include <net/inet_timewait_sock.h>
23550 @@ -44,6 +45,7 @@ void inet_get_local_port_range(struct ne
23551  }
23552  EXPORT_SYMBOL(inet_get_local_port_range);
23553
23554 +
23555  int inet_csk_bind_conflict(const struct sock *sk,
23556                            const struct inet_bind_bucket *tb, bool relax)
23557  {
23558 @@ -72,15 +74,13 @@ int inet_csk_bind_conflict(const struct
23559                              (sk2->sk_state != TCP_TIME_WAIT &&
23560                              !uid_eq(uid, sock_i_uid(sk2))))) {
23561
23562 -                               if (!sk2->sk_rcv_saddr || !sk->sk_rcv_saddr ||
23563 -                                   sk2->sk_rcv_saddr == sk->sk_rcv_saddr)
23564 +                               if (ipv4_rcv_saddr_equal(sk, sk2, true))
23565                                         break;
23566                         }
23567                         if (!relax && reuse && sk2->sk_reuse &&
23568                             sk2->sk_state != TCP_LISTEN) {
23569
23570 -                               if (!sk2->sk_rcv_saddr || !sk->sk_rcv_saddr ||
23571 -                                   sk2->sk_rcv_saddr == sk->sk_rcv_saddr)
23572 +                               if (ipv4_rcv_saddr_equal(sk, sk2, true))
23573                                         break;
23574                         }
23575                 }
23576 diff -urNp -x '*.orig' linux-4.9/net/ipv4/inet_diag.c linux-4.9/net/ipv4/inet_diag.c
23577 --- linux-4.9/net/ipv4/inet_diag.c      2021-02-24 15:47:32.590685161 +0100
23578 +++ linux-4.9/net/ipv4/inet_diag.c      2021-02-24 15:47:45.134410910 +0100
23579 @@ -31,6 +31,8 @@
23580
23581  #include <linux/inet.h>
23582  #include <linux/stddef.h>
23583 +#include <linux/vs_network.h>
23584 +#include <linux/vs_inet.h>
23585
23586  #include <linux/inet_diag.h>
23587  #include <linux/sock_diag.h>
23588 @@ -87,8 +89,8 @@ void inet_diag_msg_common_fill(struct in
23589         memset(&r->id.idiag_src, 0, sizeof(r->id.idiag_src));
23590         memset(&r->id.idiag_dst, 0, sizeof(r->id.idiag_dst));
23591
23592 -       r->id.idiag_src[0] = sk->sk_rcv_saddr;
23593 -       r->id.idiag_dst[0] = sk->sk_daddr;
23594 +       r->id.idiag_src[0] = nx_map_sock_lback(sk->sk_nx_info, sk->sk_rcv_saddr);
23595 +       r->id.idiag_dst[0] = nx_map_sock_lback(sk->sk_nx_info, sk->sk_daddr);
23596         }
23597  }
23598  EXPORT_SYMBOL_GPL(inet_diag_msg_common_fill);
23599 @@ -882,6 +884,9 @@ void inet_diag_dump_icsk(struct inet_has
23600                                 if (!net_eq(sock_net(sk), net))
23601                                         continue;
23602
23603 +                               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23604 +                                       continue;
23605 +
23606                                 if (num < s_num) {
23607                                         num++;
23608                                         continue;
23609 @@ -944,6 +949,8 @@ skip_listen_ht:
23610
23611                         if (!net_eq(sock_net(sk), net))
23612                                 continue;
23613 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23614 +                               continue;
23615                         if (num < s_num)
23616                                 goto next_normal;
23617                         state = (sk->sk_state == TCP_TIME_WAIT) ?
23618 diff -urNp -x '*.orig' linux-4.9/net/ipv4/inet_hashtables.c linux-4.9/net/ipv4/inet_hashtables.c
23619 --- linux-4.9/net/ipv4/inet_hashtables.c        2021-02-24 15:47:32.594018600 +0100
23620 +++ linux-4.9/net/ipv4/inet_hashtables.c        2021-02-24 15:47:45.134410910 +0100
23621 @@ -24,6 +24,7 @@
23622  #include <net/inet_connection_sock.h>
23623  #include <net/inet_hashtables.h>
23624  #include <net/secure_seq.h>
23625 +#include <net/route.h>
23626  #include <net/ip.h>
23627  #include <net/tcp.h>
23628  #include <net/sock_reuseport.h>
23629 @@ -187,6 +188,11 @@ static inline int compute_score(struct s
23630                         if (rcv_saddr != daddr)
23631                                 return -1;
23632                         score += 4;
23633 +               } else {
23634 +                       /* block non nx_info ips */
23635 +                       if (!v4_addr_in_nx_info(sk->sk_nx_info,
23636 +                               daddr, NXA_MASK_BIND))
23637 +                               return -1;
23638                 }
23639                 if (sk->sk_bound_dev_if || exact_dif) {
23640                         if (sk->sk_bound_dev_if != dif)
23641 @@ -302,6 +308,7 @@ begin:
23642                         goto found;
23643                 }
23644         }
23645 +
23646         /*
23647          * if the nulls value we got at the end of this lookup is
23648          * not the expected one, we must restart lookup.
23649 diff -urNp -x '*.orig' linux-4.9/net/ipv4/netfilter.c linux-4.9/net/ipv4/netfilter.c
23650 --- linux-4.9/net/ipv4/netfilter.c      2021-02-24 15:47:32.597352037 +0100
23651 +++ linux-4.9/net/ipv4/netfilter.c      2021-02-24 15:47:45.134410910 +0100
23652 @@ -11,7 +11,7 @@
23653  #include <linux/skbuff.h>
23654  #include <linux/gfp.h>
23655  #include <linux/export.h>
23656 -#include <net/route.h>
23657 +// #include <net/route.h>
23658  #include <net/xfrm.h>
23659  #include <net/ip.h>
23660  #include <net/netfilter/nf_queue.h>
23661 diff -urNp -x '*.orig' linux-4.9/net/ipv4/raw.c linux-4.9/net/ipv4/raw.c
23662 --- linux-4.9/net/ipv4/raw.c    2021-02-24 15:47:32.600685475 +0100
23663 +++ linux-4.9/net/ipv4/raw.c    2021-02-24 15:47:45.137744347 +0100
23664 @@ -128,7 +128,7 @@ static struct sock *__raw_v4_lookup(stru
23665
23666                 if (net_eq(sock_net(sk), net) && inet->inet_num == num  &&
23667                     !(inet->inet_daddr && inet->inet_daddr != raddr)    &&
23668 -                   !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
23669 +                   v4_sock_addr_match(sk->sk_nx_info, inet, laddr)     &&
23670                     !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
23671                         goto found; /* gotcha */
23672         }
23673 @@ -418,6 +418,12 @@ static int raw_send_hdrinc(struct sock *
23674                                 skb_transport_header(skb))->type);
23675         }
23676
23677 +       err = -EPERM;
23678 +       if (!nx_check(0, VS_ADMIN) && !capable(CAP_NET_RAW) &&
23679 +               sk->sk_nx_info &&
23680 +               !v4_addr_in_nx_info(sk->sk_nx_info, iph->saddr, NXA_MASK_BIND))
23681 +               goto error_free;
23682 +
23683         err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT,
23684                       net, sk, skb, NULL, rt->dst.dev,
23685                       dst_output);
23686 @@ -625,6 +631,16 @@ static int raw_sendmsg(struct sock *sk,
23687                         goto done;
23688         }
23689
23690 +       if (sk->sk_nx_info) {
23691 +               rt = ip_v4_find_src(sock_net(sk), sk->sk_nx_info, &fl4);
23692 +               if (IS_ERR(rt)) {
23693 +                       err = PTR_ERR(rt);
23694 +                       rt = NULL;
23695 +                       goto done;
23696 +               }
23697 +               ip_rt_put(rt);
23698 +       }
23699 +
23700         security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
23701         rt = ip_route_output_flow(net, &fl4, sk);
23702         if (IS_ERR(rt)) {
23703 @@ -703,17 +719,19 @@ static int raw_bind(struct sock *sk, str
23704  {
23705         struct inet_sock *inet = inet_sk(sk);
23706         struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
23707 +       struct nx_v4_sock_addr nsa = { 0 };
23708         int ret = -EINVAL;
23709         int chk_addr_ret;
23710
23711         if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
23712                 goto out;
23713 -       chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
23714 +       v4_map_sock_addr(inet, addr, &nsa);
23715 +       chk_addr_ret = inet_addr_type(sock_net(sk), nsa.saddr);
23716         ret = -EADDRNOTAVAIL;
23717 -       if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
23718 +       if (nsa.saddr && chk_addr_ret != RTN_LOCAL &&
23719             chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
23720                 goto out;
23721 -       inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
23722 +       v4_set_sock_addr(inet, &nsa);
23723         if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
23724                 inet->inet_saddr = 0;  /* Use device */
23725         sk_dst_reset(sk);
23726 @@ -762,7 +780,8 @@ static int raw_recvmsg(struct sock *sk,
23727         /* Copy the address. */
23728         if (sin) {
23729                 sin->sin_family = AF_INET;
23730 -               sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
23731 +               sin->sin_addr.s_addr =
23732 +                       nx_map_sock_lback(sk->sk_nx_info, ip_hdr(skb)->saddr);
23733                 sin->sin_port = 0;
23734                 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
23735                 *addr_len = sizeof(*sin);
23736 @@ -958,7 +977,8 @@ static struct sock *raw_get_first(struct
23737         for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
23738                         ++state->bucket) {
23739                 sk_for_each(sk, &state->h->ht[state->bucket])
23740 -                       if (sock_net(sk) == seq_file_net(seq))
23741 +                       if ((sock_net(sk) == seq_file_net(seq)) &&
23742 +                           nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23743                                 goto found;
23744         }
23745         sk = NULL;
23746 @@ -974,7 +994,8 @@ static struct sock *raw_get_next(struct
23747                 sk = sk_next(sk);
23748  try_again:
23749                 ;
23750 -       } while (sk && sock_net(sk) != seq_file_net(seq));
23751 +       } while (sk && ((sock_net(sk) != seq_file_net(seq)) ||
23752 +               !nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT)));
23753
23754         if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
23755                 sk = sk_head(&state->h->ht[state->bucket]);
23756 diff -urNp -x '*.orig' linux-4.9/net/ipv4/route.c linux-4.9/net/ipv4/route.c
23757 --- linux-4.9/net/ipv4/route.c  2021-02-24 15:47:32.600685475 +0100
23758 +++ linux-4.9/net/ipv4/route.c  2021-02-24 15:47:45.137744347 +0100
23759 @@ -2287,7 +2287,7 @@ struct rtable *__ip_route_output_key_has
23760
23761
23762         if (fl4->flowi4_oif) {
23763 -               dev_out = dev_get_by_index_rcu(net, fl4->flowi4_oif);
23764 +               dev_out = dev_get_by_index_real_rcu(net, fl4->flowi4_oif);
23765                 rth = ERR_PTR(-ENODEV);
23766                 if (!dev_out)
23767                         goto out;
23768 diff -urNp -x '*.orig' linux-4.9/net/ipv4/tcp.c linux-4.9/net/ipv4/tcp.c
23769 --- linux-4.9/net/ipv4/tcp.c    2021-02-24 15:47:32.600685475 +0100
23770 +++ linux-4.9/net/ipv4/tcp.c    2021-02-24 15:47:45.137744347 +0100
23771 @@ -269,6 +269,7 @@
23772  #include <linux/err.h>
23773  #include <linux/time.h>
23774  #include <linux/slab.h>
23775 +#include <linux/in.h>
23776
23777  #include <net/icmp.h>
23778  #include <net/inet_common.h>
23779 diff -urNp -x '*.orig' linux-4.9/net/ipv4/tcp_ipv4.c linux-4.9/net/ipv4/tcp_ipv4.c
23780 --- linux-4.9/net/ipv4/tcp_ipv4.c       2021-02-24 15:47:32.604018912 +0100
23781 +++ linux-4.9/net/ipv4/tcp_ipv4.c       2021-02-24 15:47:45.137744347 +0100
23782 @@ -1944,8 +1944,12 @@ get_head:
23783         sk = sk_nulls_next(sk);
23784  get_sk:
23785         sk_nulls_for_each_from(sk, node) {
23786 +               vxdprintk(VXD_CBIT(net, 6), "sk: %p [#%d] (from %d)",
23787 +                       sk, sk->sk_nid, nx_current_nid());
23788                 if (!net_eq(sock_net(sk), net))
23789                         continue;
23790 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23791 +                       continue;
23792                 if (sk->sk_family == st->family)
23793                         return sk;
23794         }
23795 @@ -1999,6 +2003,11 @@ static void *established_get_first(struc
23796
23797                 spin_lock_bh(lock);
23798                 sk_nulls_for_each(sk, node, &tcp_hashinfo.ehash[st->bucket].chain) {
23799 +                       vxdprintk(VXD_CBIT(net, 6),
23800 +                               "sk,egf: %p [#%d] (from %d)",
23801 +                               sk, sk->sk_nid, nx_current_nid());
23802 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23803 +                               continue;
23804                         if (sk->sk_family != st->family ||
23805                             !net_eq(sock_net(sk), net)) {
23806                                 continue;
23807 @@ -2025,6 +2034,11 @@ static void *established_get_next(struct
23808         sk = sk_nulls_next(sk);
23809
23810         sk_nulls_for_each_from(sk, node) {
23811 +               vxdprintk(VXD_CBIT(net, 6),
23812 +                       "sk,egn: %p [#%d] (from %d)",
23813 +                       sk, sk->sk_nid, nx_current_nid());
23814 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23815 +                       continue;
23816                 if (sk->sk_family == st->family && net_eq(sock_net(sk), net))
23817                         return sk;
23818         }
23819 @@ -2216,9 +2230,9 @@ static void get_openreq4(const struct re
23820         seq_printf(f, "%4d: %08X:%04X %08X:%04X"
23821                 " %02X %08X:%08X %02X:%08lX %08X %5u %8d %u %d %pK",
23822                 i,
23823 -               ireq->ir_loc_addr,
23824 +               nx_map_sock_lback(current_nx_info(), ireq->ir_loc_addr),
23825                 ireq->ir_num,
23826 -               ireq->ir_rmt_addr,
23827 +               nx_map_sock_lback(current_nx_info(), ireq->ir_rmt_addr),
23828                 ntohs(ireq->ir_rmt_port),
23829                 TCP_SYN_RECV,
23830                 0, 0, /* could print option size, but that is af dependent. */
23831 @@ -2241,8 +2255,8 @@ static void get_tcp4_sock(struct sock *s
23832         const struct inet_connection_sock *icsk = inet_csk(sk);
23833         const struct inet_sock *inet = inet_sk(sk);
23834         const struct fastopen_queue *fastopenq = &icsk->icsk_accept_queue.fastopenq;
23835 -       __be32 dest = inet->inet_daddr;
23836 -       __be32 src = inet->inet_rcv_saddr;
23837 +       __be32 dest = nx_map_sock_lback(current_nx_info(), inet->inet_daddr);
23838 +       __be32 src = nx_map_sock_lback(current_nx_info(), inet->inet_rcv_saddr);
23839         __u16 destp = ntohs(inet->inet_dport);
23840         __u16 srcp = ntohs(inet->inet_sport);
23841         int rx_queue;
23842 @@ -2301,8 +2315,8 @@ static void get_timewait4_sock(const str
23843         __be32 dest, src;
23844         __u16 destp, srcp;
23845
23846 -       dest  = tw->tw_daddr;
23847 -       src   = tw->tw_rcv_saddr;
23848 +       dest  = nx_map_sock_lback(current_nx_info(), tw->tw_daddr);
23849 +       src   = nx_map_sock_lback(current_nx_info(), tw->tw_rcv_saddr);
23850         destp = ntohs(tw->tw_dport);
23851         srcp  = ntohs(tw->tw_sport);
23852
23853 diff -urNp -x '*.orig' linux-4.9/net/ipv4/tcp_minisocks.c linux-4.9/net/ipv4/tcp_minisocks.c
23854 --- linux-4.9/net/ipv4/tcp_minisocks.c  2021-02-24 15:47:32.604018912 +0100
23855 +++ linux-4.9/net/ipv4/tcp_minisocks.c  2021-02-24 15:47:45.137744347 +0100
23856 @@ -23,6 +23,9 @@
23857  #include <linux/slab.h>
23858  #include <linux/sysctl.h>
23859  #include <linux/workqueue.h>
23860 +#include <linux/vs_limit.h>
23861 +#include <linux/vs_socket.h>
23862 +#include <linux/vs_context.h>
23863  #include <net/tcp.h>
23864  #include <net/inet_common.h>
23865  #include <net/xfrm.h>
23866 @@ -286,6 +289,11 @@ void tcp_time_wait(struct sock *sk, int
23867                 tcptw->tw_ts_offset     = tp->tsoffset;
23868                 tcptw->tw_last_oow_ack_time = 0;
23869
23870 +               tw->tw_xid              = sk->sk_xid;
23871 +               tw->tw_vx_info          = NULL;
23872 +               tw->tw_nid              = sk->sk_nid;
23873 +               tw->tw_nx_info          = NULL;
23874 +
23875  #if IS_ENABLED(CONFIG_IPV6)
23876                 if (tw->tw_family == PF_INET6) {
23877                         struct ipv6_pinfo *np = inet6_sk(sk);
23878 diff -urNp -x '*.orig' linux-4.9/net/ipv4/udp.c linux-4.9/net/ipv4/udp.c
23879 --- linux-4.9/net/ipv4/udp.c    2021-02-24 15:47:32.607352350 +0100
23880 +++ linux-4.9/net/ipv4/udp.c    2021-02-24 15:47:45.137744347 +0100
23881 @@ -361,12 +361,26 @@ int ipv4_rcv_saddr_equal(const struct so
23882                          bool match_wildcard)
23883  {
23884         struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2);
23885 +       __be32  sk1_rcv_saddr = inet1->inet_rcv_saddr,
23886 +               sk2_rcv_saddr = inet2->inet_rcv_saddr;
23887
23888 -       if (!ipv6_only_sock(sk2)) {
23889 -               if (inet1->inet_rcv_saddr == inet2->inet_rcv_saddr)
23890 -                       return 1;
23891 -               if (!inet1->inet_rcv_saddr || !inet2->inet_rcv_saddr)
23892 -                       return match_wildcard;
23893 +       if (ipv6_only_sock(sk2))
23894 +               return 0;
23895 +
23896 +       if (sk1_rcv_saddr && sk2_rcv_saddr && sk1_rcv_saddr == sk2_rcv_saddr)
23897 +               return 1;
23898 +
23899 +       if (match_wildcard) {
23900 +               if (!sk2_rcv_saddr && !sk1_rcv_saddr)
23901 +                       return nx_v4_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
23902 +
23903 +               if (!sk2_rcv_saddr && sk1_rcv_saddr)
23904 +                       return v4_addr_in_nx_info(sk2->sk_nx_info,
23905 +                               sk1_rcv_saddr, NXA_MASK_BIND);
23906 +
23907 +               if (!sk1_rcv_saddr && sk2_rcv_saddr)
23908 +                       return v4_addr_in_nx_info(sk1->sk_nx_info,
23909 +                               sk2_rcv_saddr, NXA_MASK_BIND);
23910         }
23911         return 0;
23912  }
23913 @@ -408,6 +422,11 @@ static int compute_score(struct sock *sk
23914                 if (inet->inet_rcv_saddr != daddr)
23915                         return -1;
23916                 score += 4;
23917 +               } else {
23918 +                       /* block non nx_info ips */
23919 +                       if (!v4_addr_in_nx_info(sk->sk_nx_info,
23920 +                               daddr, NXA_MASK_BIND))
23921 +                               return -1;
23922         }
23923
23924         if (inet->inet_daddr) {
23925 @@ -483,6 +502,7 @@ static struct sock *udp4_lib_lookup2(str
23926         return result;
23927  }
23928
23929 +
23930  /* UDP is nearly always wildcards out the wazoo, it makes no sense to try
23931   * harder than this. -DaveM
23932   */
23933 @@ -607,7 +627,7 @@ static inline bool __udp_is_mcast_sock(s
23934             udp_sk(sk)->udp_port_hash != hnum ||
23935             (inet->inet_daddr && inet->inet_daddr != rmt_addr) ||
23936             (inet->inet_dport != rmt_port && inet->inet_dport) ||
23937 -           (inet->inet_rcv_saddr && inet->inet_rcv_saddr != loc_addr) ||
23938 +           !v4_sock_addr_match(sk->sk_nx_info, inet, loc_addr) ||
23939             ipv6_only_sock(sk) ||
23940             (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
23941                 return false;
23942 @@ -1024,6 +1044,16 @@ int udp_sendmsg(struct sock *sk, struct
23943                                    flow_flags,
23944                                    faddr, saddr, dport, inet->inet_sport);
23945
23946 +               if (sk->sk_nx_info) {
23947 +                       rt = ip_v4_find_src(net, sk->sk_nx_info, fl4);
23948 +                       if (IS_ERR(rt)) {
23949 +                               err = PTR_ERR(rt);
23950 +                               rt = NULL;
23951 +                               goto out;
23952 +                       }
23953 +                       ip_rt_put(rt);
23954 +               }
23955 +
23956                 security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
23957                 rt = ip_route_output_flow(net, fl4, sk);
23958                 if (IS_ERR(rt)) {
23959 @@ -1321,7 +1351,8 @@ try_again:
23960         if (sin) {
23961                 sin->sin_family = AF_INET;
23962                 sin->sin_port = udp_hdr(skb)->source;
23963 -               sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
23964 +               sin->sin_addr.s_addr = nx_map_sock_lback(
23965 +                       skb->sk->sk_nx_info, ip_hdr(skb)->saddr);
23966                 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
23967                 *addr_len = sizeof(*sin);
23968         }
23969 @@ -2291,6 +2322,8 @@ static struct sock *udp_get_first(struct
23970                 sk_for_each(sk, &hslot->head) {
23971                         if (!net_eq(sock_net(sk), net))
23972                                 continue;
23973 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
23974 +                               continue;
23975                         if (sk->sk_family == state->family)
23976                                 goto found;
23977                 }
23978 @@ -2308,7 +2341,9 @@ static struct sock *udp_get_next(struct
23979
23980         do {
23981                 sk = sk_next(sk);
23982 -       } while (sk && (!net_eq(sock_net(sk), net) || sk->sk_family != state->family));
23983 +       } while (sk && (!net_eq(sock_net(sk), net) ||
23984 +               sk->sk_family != state->family ||
23985 +               !nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT)));
23986
23987         if (!sk) {
23988                 if (state->bucket <= state->udp_table->mask)
23989 @@ -2404,8 +2439,8 @@ static void udp4_format_sock(struct sock
23990                 int bucket)
23991  {
23992         struct inet_sock *inet = inet_sk(sp);
23993 -       __be32 dest = inet->inet_daddr;
23994 -       __be32 src  = inet->inet_rcv_saddr;
23995 +       __be32 dest = nx_map_sock_lback(current_nx_info(), inet->inet_daddr);
23996 +       __be32 src = nx_map_sock_lback(current_nx_info(), inet->inet_rcv_saddr);
23997         __u16 destp       = ntohs(inet->inet_dport);
23998         __u16 srcp        = ntohs(inet->inet_sport);
23999
24000 diff -urNp -x '*.orig' linux-4.9/net/ipv4/udp_diag.c linux-4.9/net/ipv4/udp_diag.c
24001 --- linux-4.9/net/ipv4/udp_diag.c       2016-12-11 20:17:54.000000000 +0100
24002 +++ linux-4.9/net/ipv4/udp_diag.c       2021-02-24 15:47:45.137744347 +0100
24003 @@ -120,6 +120,8 @@ static void udp_dump(struct udp_table *t
24004
24005                         if (!net_eq(sock_net(sk), net))
24006                                 continue;
24007 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24008 +                               continue;
24009                         if (num < s_num)
24010                                 goto next;
24011                         if (!(r->idiag_states & (1 << sk->sk_state)))
24012 diff -urNp -x '*.orig' linux-4.9/net/ipv6/addrconf.c linux-4.9/net/ipv6/addrconf.c
24013 --- linux-4.9/net/ipv6/addrconf.c       2021-02-24 15:47:32.607352350 +0100
24014 +++ linux-4.9/net/ipv6/addrconf.c       2021-02-24 15:47:45.141077785 +0100
24015 @@ -92,6 +92,7 @@
24016  #include <linux/proc_fs.h>
24017  #include <linux/seq_file.h>
24018  #include <linux/export.h>
24019 +#include <linux/vs_network.h>
24020
24021  /* Set to 3 to get tracing... */
24022  #define ACONF_DEBUG 2
24023 @@ -1498,7 +1499,8 @@ static int __ipv6_dev_get_saddr(struct n
24024                                 struct ipv6_saddr_dst *dst,
24025                                 struct inet6_dev *idev,
24026                                 struct ipv6_saddr_score *scores,
24027 -                               int hiscore_idx)
24028 +                               int hiscore_idx,
24029 +                               struct nx_info *nxi)
24030  {
24031         struct ipv6_saddr_score *score = &scores[1 - hiscore_idx], *hiscore = &scores[hiscore_idx];
24032
24033 @@ -1528,6 +1530,8 @@ static int __ipv6_dev_get_saddr(struct n
24034                                             idev->dev->name);
24035                         continue;
24036                 }
24037 +               if (!v6_addr_in_nx_info(nxi, &score->ifa->addr, -1))
24038 +                       continue;
24039
24040                 score->rule = -1;
24041                 bitmap_zero(score->scorebits, IPV6_SADDR_RULE_MAX);
24042 @@ -1578,26 +1582,27 @@ static int ipv6_get_saddr_master(struct
24043                                  const struct net_device *master,
24044                                  struct ipv6_saddr_dst *dst,
24045                                  struct ipv6_saddr_score *scores,
24046 -                                int hiscore_idx)
24047 +                                int hiscore_idx,
24048 +                                struct nx_info *nxi)
24049  {
24050         struct inet6_dev *idev;
24051
24052         idev = __in6_dev_get(dst_dev);
24053         if (idev)
24054 -               hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev,
24055 -                                                  scores, hiscore_idx);
24056 +               hiscore_idx = __ipv6_dev_get_saddr(net, dst,
24057 +                       idev, scores, hiscore_idx, nxi);
24058
24059         idev = __in6_dev_get(master);
24060         if (idev)
24061 -               hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev,
24062 -                                                  scores, hiscore_idx);
24063 +               hiscore_idx = __ipv6_dev_get_saddr(net, dst,
24064 +                       idev, scores, hiscore_idx, nxi);
24065
24066         return hiscore_idx;
24067  }
24068
24069  int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
24070                        const struct in6_addr *daddr, unsigned int prefs,
24071 -                      struct in6_addr *saddr)
24072 +                      struct in6_addr *saddr, struct nx_info *nxi)
24073  {
24074         struct ipv6_saddr_score scores[2], *hiscore;
24075         struct ipv6_saddr_dst dst;
24076 @@ -1646,7 +1651,8 @@ int ipv6_dev_get_saddr(struct net *net,
24077
24078         if (use_oif_addr) {
24079                 if (idev)
24080 -                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
24081 +                       hiscore_idx = __ipv6_dev_get_saddr(net,
24082 +                               &dst, idev, scores, hiscore_idx, nxi);
24083         } else {
24084                 const struct net_device *master;
24085                 int master_idx = 0;
24086 @@ -1660,8 +1666,8 @@ int ipv6_dev_get_saddr(struct net *net,
24087                         master_idx = master->ifindex;
24088
24089                         hiscore_idx = ipv6_get_saddr_master(net, dst_dev,
24090 -                                                           master, &dst,
24091 -                                                           scores, hiscore_idx);
24092 +                                               master, &dst, scores,
24093 +                                               hiscore_idx, nxi);
24094
24095                         if (scores[hiscore_idx].ifa)
24096                                 goto out;
24097 @@ -1676,7 +1682,8 @@ int ipv6_dev_get_saddr(struct net *net,
24098                         idev = __in6_dev_get(dev);
24099                         if (!idev)
24100                                 continue;
24101 -                       hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx);
24102 +                       hiscore_idx = __ipv6_dev_get_saddr(net,
24103 +                               &dst, idev, scores, hiscore_idx, nxi);
24104                 }
24105         }
24106
24107 @@ -4135,7 +4142,10 @@ static void if6_seq_stop(struct seq_file
24108  static int if6_seq_show(struct seq_file *seq, void *v)
24109  {
24110         struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
24111 -       seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
24112 +
24113 +       if (nx_check(0, VS_ADMIN|VS_WATCH) ||
24114 +           v6_addr_in_nx_info(current_nx_info(), &ifp->addr, -1))
24115 +               seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
24116                    &ifp->addr,
24117                    ifp->idev->dev->ifindex,
24118                    ifp->prefix_len,
24119 @@ -4719,6 +4729,11 @@ static int in6_dump_addrs(struct inet6_d
24120         struct ifacaddr6 *ifaca;
24121         int err = 1;
24122         int ip_idx = *p_ip_idx;
24123 +       struct nx_info *nxi = skb->sk ? skb->sk->sk_nx_info : NULL;
24124 +
24125 +       /* disable ipv6 on non v6 guests */
24126 +       if (nxi && !nx_info_has_v6(nxi))
24127 +               return skb->len;
24128
24129         read_lock_bh(&idev->lock);
24130         switch (type) {
24131 @@ -4729,6 +4744,8 @@ static int in6_dump_addrs(struct inet6_d
24132                 list_for_each_entry(ifa, &idev->addr_list, if_list) {
24133                         if (ip_idx < s_ip_idx)
24134                                 goto next;
24135 +                       if (!v6_addr_in_nx_info(nxi, &ifa->addr, -1))
24136 +                               goto next;
24137                         err = inet6_fill_ifaddr(skb, ifa,
24138                                                 NETLINK_CB(cb->skb).portid,
24139                                                 cb->nlh->nlmsg_seq,
24140 @@ -4748,6 +4765,8 @@ next:
24141                      ifmca = ifmca->next, ip_idx++) {
24142                         if (ip_idx < s_ip_idx)
24143                                 continue;
24144 +                       if (!v6_addr_in_nx_info(nxi, &ifmca->mca_addr, -1))
24145 +                               continue;
24146                         err = inet6_fill_ifmcaddr(skb, ifmca,
24147                                                   NETLINK_CB(cb->skb).portid,
24148                                                   cb->nlh->nlmsg_seq,
24149 @@ -4763,6 +4782,8 @@ next:
24150                      ifaca = ifaca->aca_next, ip_idx++) {
24151                         if (ip_idx < s_ip_idx)
24152                                 continue;
24153 +                       if (!v6_addr_in_nx_info(nxi, &ifaca->aca_addr, -1))
24154 +                               continue;
24155                         err = inet6_fill_ifacaddr(skb, ifaca,
24156                                                   NETLINK_CB(cb->skb).portid,
24157                                                   cb->nlh->nlmsg_seq,
24158 @@ -4791,6 +4812,10 @@ static int inet6_dump_addr(struct sk_buf
24159         struct inet6_dev *idev;
24160         struct hlist_head *head;
24161
24162 +       /* FIXME: maybe disable ipv6 on non v6 guests?
24163 +       if (skb->sk && skb->sk->sk_vx_info)
24164 +               return skb->len; */
24165 +
24166         s_h = cb->args[0];
24167         s_idx = idx = cb->args[1];
24168         s_ip_idx = ip_idx = cb->args[2];
24169 @@ -5309,6 +5334,7 @@ static int inet6_dump_ifinfo(struct sk_b
24170         struct net_device *dev;
24171         struct inet6_dev *idev;
24172         struct hlist_head *head;
24173 +       struct nx_info *nxi = skb->sk ? skb->sk->sk_nx_info : NULL;
24174
24175         s_h = cb->args[0];
24176         s_idx = cb->args[1];
24177 @@ -5320,6 +5346,8 @@ static int inet6_dump_ifinfo(struct sk_b
24178                 hlist_for_each_entry_rcu(dev, head, index_hlist) {
24179                         if (idx < s_idx)
24180                                 goto cont;
24181 +                       if (!v6_dev_in_nx_info(dev, nxi))
24182 +                               goto cont;
24183                         idev = __in6_dev_get(dev);
24184                         if (!idev)
24185                                 goto cont;
24186 diff -urNp -x '*.orig' linux-4.9/net/ipv6/af_inet6.c linux-4.9/net/ipv6/af_inet6.c
24187 --- linux-4.9/net/ipv6/af_inet6.c       2021-02-24 15:47:32.607352350 +0100
24188 +++ linux-4.9/net/ipv6/af_inet6.c       2021-02-24 15:47:45.141077785 +0100
24189 @@ -43,6 +43,7 @@
24190  #include <linux/netdevice.h>
24191  #include <linux/icmpv6.h>
24192  #include <linux/netfilter_ipv6.h>
24193 +#include <linux/vs_inet.h>
24194
24195  #include <net/ip.h>
24196  #include <net/ipv6.h>
24197 @@ -167,10 +168,13 @@ lookup_protocol:
24198         }
24199
24200         err = -EPERM;
24201 +       if ((protocol == IPPROTO_ICMPV6) &&
24202 +               nx_capable(CAP_NET_RAW, NXC_RAW_ICMP))
24203 +               goto override;
24204         if (sock->type == SOCK_RAW && !kern &&
24205             !ns_capable(net->user_ns, CAP_NET_RAW))
24206                 goto out_rcu_unlock;
24207 -
24208 +override:
24209         sock->ops = answer->ops;
24210         answer_prot = answer->prot;
24211         answer_flags = answer->flags;
24212 @@ -272,6 +276,7 @@ int inet6_bind(struct socket *sock, stru
24213         struct inet_sock *inet = inet_sk(sk);
24214         struct ipv6_pinfo *np = inet6_sk(sk);
24215         struct net *net = sock_net(sk);
24216 +       struct nx_v6_sock_addr nsa;
24217         __be32 v4addr = 0;
24218         unsigned short snum;
24219         bool saved_ipv6only;
24220 @@ -288,6 +293,10 @@ int inet6_bind(struct socket *sock, stru
24221         if (addr->sin6_family != AF_INET6)
24222                 return -EAFNOSUPPORT;
24223
24224 +       err = v6_map_sock_addr(inet, addr, &nsa);
24225 +       if (err)
24226 +               return err;
24227 +
24228         addr_type = ipv6_addr_type(&addr->sin6_addr);
24229         if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
24230                 return -EINVAL;
24231 @@ -340,6 +349,10 @@ int inet6_bind(struct socket *sock, stru
24232                         err = -EADDRNOTAVAIL;
24233                         goto out;
24234                 }
24235 +               if (!v4_addr_in_nx_info(sk->sk_nx_info, v4addr, NXA_MASK_BIND)) {
24236 +                       err = -EADDRNOTAVAIL;
24237 +                       goto out;
24238 +               }
24239         } else {
24240                 if (addr_type != IPV6_ADDR_ANY) {
24241                         struct net_device *dev = NULL;
24242 @@ -369,6 +382,11 @@ int inet6_bind(struct socket *sock, stru
24243                                 }
24244                         }
24245
24246 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, &addr->sin6_addr, -1)) {
24247 +                               err = -EADDRNOTAVAIL;
24248 +                               goto out_unlock;
24249 +                       }
24250 +
24251                         /* ipv4 addr of the socket is invalid.  Only the
24252                          * unspecified and mapped address have a v4 equivalent.
24253                          */
24254 @@ -386,6 +404,9 @@ int inet6_bind(struct socket *sock, stru
24255                 }
24256         }
24257
24258 +       /* what's that for? */
24259 +       v6_set_sock_addr(inet, &nsa);
24260 +
24261         inet->inet_rcv_saddr = v4addr;
24262         inet->inet_saddr = v4addr;
24263
24264 @@ -492,9 +513,11 @@ int inet6_getname(struct socket *sock, s
24265                         return -ENOTCONN;
24266                 sin->sin6_port = inet->inet_dport;
24267                 sin->sin6_addr = sk->sk_v6_daddr;
24268 +               /* FIXME: remap lback? */
24269                 if (np->sndflow)
24270                         sin->sin6_flowinfo = np->flow_label;
24271         } else {
24272 +               /* FIXME: remap lback? */
24273                 if (ipv6_addr_any(&sk->sk_v6_rcv_saddr))
24274                         sin->sin6_addr = np->saddr;
24275                 else
24276 diff -urNp -x '*.orig' linux-4.9/net/ipv6/datagram.c linux-4.9/net/ipv6/datagram.c
24277 --- linux-4.9/net/ipv6/datagram.c       2021-02-24 15:47:32.610685787 +0100
24278 +++ linux-4.9/net/ipv6/datagram.c       2021-02-24 15:47:45.141077785 +0100
24279 @@ -792,7 +792,7 @@ int ip6_datagram_send_ctl(struct net *ne
24280
24281                         rcu_read_lock();
24282                         if (fl6->flowi6_oif) {
24283 -                               dev = dev_get_by_index_rcu(net, fl6->flowi6_oif);
24284 +                               dev = dev_get_by_index_real_rcu(net, fl6->flowi6_oif);
24285                                 if (!dev) {
24286                                         rcu_read_unlock();
24287                                         return -ENODEV;
24288 diff -urNp -x '*.orig' linux-4.9/net/ipv6/fib6_rules.c linux-4.9/net/ipv6/fib6_rules.c
24289 --- linux-4.9/net/ipv6/fib6_rules.c     2021-02-24 15:47:32.610685787 +0100
24290 +++ linux-4.9/net/ipv6/fib6_rules.c     2021-02-24 15:47:45.141077785 +0100
24291 @@ -102,7 +102,7 @@ static int fib6_rule_action(struct fib_r
24292                                                ip6_dst_idev(&rt->dst)->dev,
24293                                                &flp6->daddr,
24294                                                rt6_flags2srcprefs(flags),
24295 -                                              &saddr))
24296 +                                              &saddr, NULL))
24297                                 goto again;
24298                         if (!ipv6_prefix_equal(&saddr, &r->src.addr,
24299                                                r->src.plen))
24300 diff -urNp -x '*.orig' linux-4.9/net/ipv6/inet6_hashtables.c linux-4.9/net/ipv6/inet6_hashtables.c
24301 --- linux-4.9/net/ipv6/inet6_hashtables.c       2021-02-24 15:47:32.610685787 +0100
24302 +++ linux-4.9/net/ipv6/inet6_hashtables.c       2021-02-24 15:47:45.141077785 +0100
24303 @@ -16,6 +16,7 @@
24304
24305  #include <linux/module.h>
24306  #include <linux/random.h>
24307 +#include <linux/vs_inet6.h>
24308
24309  #include <net/addrconf.h>
24310  #include <net/inet_connection_sock.h>
24311 @@ -108,6 +109,9 @@ static inline int compute_score(struct s
24312                         if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, daddr))
24313                                 return -1;
24314                         score++;
24315 +               } else {
24316 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, daddr, -1))
24317 +                               return -1;
24318                 }
24319                 if (sk->sk_bound_dev_if || exact_dif) {
24320                         if (sk->sk_bound_dev_if != dif)
24321 @@ -283,39 +287,71 @@ EXPORT_SYMBOL_GPL(inet6_hash);
24322   *                          IPV6_ADDR_ANY only equals to IPV6_ADDR_ANY,
24323   *                          and 0.0.0.0 equals to 0.0.0.0 only
24324   */
24325 -int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2,
24326 +int ipv6_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2,
24327                          bool match_wildcard)
24328  {
24329 +       const struct in6_addr *sk1_rcv_saddr6 = inet6_rcv_saddr(sk1);
24330         const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
24331 +       __be32 sk1_rcv_saddr = sk1->sk_rcv_saddr;
24332 +       __be32 sk2_rcv_saddr = sk2->sk_rcv_saddr;
24333 +       int sk1_ipv6only = inet_v6_ipv6only(sk1);
24334         int sk2_ipv6only = inet_v6_ipv6only(sk2);
24335 -       int addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
24336 +       int addr_type1 = ipv6_addr_type(sk1_rcv_saddr6);
24337         int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED;
24338
24339 +
24340 +       /* if one is mapped and the other is ipv6only exit early */
24341 +       if (addr_type1 == IPV6_ADDR_MAPPED && sk2_ipv6only)
24342 +               return 0;
24343 +
24344 +       if (addr_type2 == IPV6_ADDR_MAPPED && sk1_ipv6only)
24345 +               return 0;
24346 +
24347         /* if both are mapped, treat as IPv4 */
24348 -       if (addr_type == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) {
24349 -               if (!sk2_ipv6only) {
24350 -                       if (sk->sk_rcv_saddr == sk2->sk_rcv_saddr)
24351 -                               return 1;
24352 -                       if (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr)
24353 -                               return match_wildcard;
24354 -               }
24355 +       if (addr_type1 == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) {
24356 +               if (sk1_rcv_saddr == sk2_rcv_saddr)
24357 +                       return 1;
24358 +               if ((!sk1_rcv_saddr || !sk2_rcv_saddr) && match_wildcard)
24359 +                       goto vs_v4;
24360                 return 0;
24361         }
24362
24363 -       if (addr_type == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY)
24364 +       /* if both are wildcards, check for overlap */
24365 +       if (addr_type1 == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY)
24366 +               return nx_v6_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
24367 +
24368 +       /* if both are valid ipv6 addresses, mapped handled above */
24369 +       if (addr_type1 != IPV6_ADDR_ANY && addr_type2 != IPV6_ADDR_ANY &&
24370 +           sk2_rcv_saddr6 && ipv6_addr_equal(sk1_rcv_saddr6, sk2_rcv_saddr6))
24371                 return 1;
24372
24373 -       if (addr_type2 == IPV6_ADDR_ANY && match_wildcard &&
24374 -           !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
24375 -               return 1;
24376 +       if (addr_type1 == IPV6_ADDR_ANY && match_wildcard) {
24377 +               /* ipv6only case handled above */
24378 +               if (addr_type2 == IPV6_ADDR_MAPPED)
24379 +                       return v4_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr, -1);
24380 +               else
24381 +                       return v6_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr6, -1);
24382 +       }
24383
24384 -       if (addr_type == IPV6_ADDR_ANY && match_wildcard &&
24385 -           !(ipv6_only_sock(sk) && addr_type2 == IPV6_ADDR_MAPPED))
24386 -               return 1;
24387 +       if (addr_type2 == IPV6_ADDR_ANY && match_wildcard) {
24388 +               /* ipv6only case handled above */
24389 +               if (addr_type1 == IPV6_ADDR_MAPPED)
24390 +                       return v4_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr, -1);
24391 +               else
24392 +                       return v6_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr6, -1);
24393 +       }
24394
24395 -       if (sk2_rcv_saddr6 &&
24396 -           ipv6_addr_equal(&sk->sk_v6_rcv_saddr, sk2_rcv_saddr6))
24397 -               return 1;
24398 +       return 0;
24399 +
24400 +vs_v4:
24401 +       if (!sk1_rcv_saddr && !sk2_rcv_saddr)
24402 +               return nx_v4_addr_conflict(sk1->sk_nx_info, sk2->sk_nx_info);
24403 +
24404 +       if (!sk2_rcv_saddr)
24405 +               return v4_addr_in_nx_info(sk1->sk_nx_info, sk2_rcv_saddr, -1);
24406 +
24407 +       if (!sk1_rcv_saddr)
24408 +               return v4_addr_in_nx_info(sk2->sk_nx_info, sk1_rcv_saddr, -1);
24409
24410         return 0;
24411  }
24412 diff -urNp -x '*.orig' linux-4.9/net/ipv6/ip6_fib.c linux-4.9/net/ipv6/ip6_fib.c
24413 --- linux-4.9/net/ipv6/ip6_fib.c        2021-02-24 15:47:32.610685787 +0100
24414 +++ linux-4.9/net/ipv6/ip6_fib.c        2021-02-24 15:47:45.141077785 +0100
24415 @@ -1977,6 +1977,7 @@ static int ipv6_route_seq_show(struct se
24416         struct rt6_info *rt = v;
24417         struct ipv6_route_iter *iter = seq->private;
24418
24419 +       /* FIXME: check for network context? */
24420         seq_printf(seq, "%pi6 %02x ", &rt->rt6i_dst.addr, rt->rt6i_dst.plen);
24421
24422  #ifdef CONFIG_IPV6_SUBTREES
24423 diff -urNp -x '*.orig' linux-4.9/net/ipv6/ip6_output.c linux-4.9/net/ipv6/ip6_output.c
24424 --- linux-4.9/net/ipv6/ip6_output.c     2021-02-24 15:47:33.077367054 +0100
24425 +++ linux-4.9/net/ipv6/ip6_output.c     2021-02-24 15:47:45.141077785 +0100
24426 @@ -966,7 +966,8 @@ static int ip6_dst_lookup_tail(struct ne
24427                 rt = (*dst)->error ? NULL : (struct rt6_info *)*dst;
24428                 err = ip6_route_get_saddr(net, rt, &fl6->daddr,
24429                                           sk ? inet6_sk(sk)->srcprefs : 0,
24430 -                                         &fl6->saddr);
24431 +                                         &fl6->saddr,
24432 +                                         sk ? sk->sk_nx_info : NULL);
24433                 if (err)
24434                         goto out_err_release;
24435
24436 diff -urNp -x '*.orig' linux-4.9/net/ipv6/ip6_tunnel.c linux-4.9/net/ipv6/ip6_tunnel.c
24437 --- linux-4.9/net/ipv6/ip6_tunnel.c     2021-02-24 15:47:32.614019225 +0100
24438 +++ linux-4.9/net/ipv6/ip6_tunnel.c     2021-02-24 15:47:45.141077785 +0100
24439 @@ -1124,7 +1124,7 @@ route_lookup:
24440                 }
24441                 if (t->parms.collect_md &&
24442                     ipv6_dev_get_saddr(net, ip6_dst_idev(dst)->dev,
24443 -                                      &fl6->daddr, 0, &fl6->saddr))
24444 +                                      &fl6->daddr, 0, &fl6->saddr, NULL))
24445                         goto tx_err_link_failure;
24446                 ndst = dst;
24447         }
24448 diff -urNp -x '*.orig' linux-4.9/net/ipv6/ndisc.c linux-4.9/net/ipv6/ndisc.c
24449 --- linux-4.9/net/ipv6/ndisc.c  2021-02-24 15:47:32.614019225 +0100
24450 +++ linux-4.9/net/ipv6/ndisc.c  2021-02-24 15:47:45.141077785 +0100
24451 @@ -512,7 +512,7 @@ void ndisc_send_na(struct net_device *de
24452         } else {
24453                 if (ipv6_dev_get_saddr(dev_net(dev), dev, daddr,
24454                                        inet6_sk(dev_net(dev)->ipv6.ndisc_sk)->srcprefs,
24455 -                                      &tmpaddr))
24456 +                                      &tmpaddr, NULL))
24457                         return;
24458                 src_addr = &tmpaddr;
24459         }
24460 diff -urNp -x '*.orig' linux-4.9/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c linux-4.9/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c
24461 --- linux-4.9/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c       2016-12-11 20:17:54.000000000 +0100
24462 +++ linux-4.9/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c       2021-02-24 15:47:45.141077785 +0100
24463 @@ -39,7 +39,7 @@ nf_nat_masquerade_ipv6(struct sk_buff *s
24464                             ctinfo == IP_CT_RELATED_REPLY));
24465
24466         if (ipv6_dev_get_saddr(nf_ct_net(ct), out,
24467 -                              &ipv6_hdr(skb)->daddr, 0, &src) < 0)
24468 +                              &ipv6_hdr(skb)->daddr, 0, &src, NULL) < 0)
24469                 return NF_DROP;
24470
24471         nfct_nat(ct)->masq_index = out->ifindex;
24472 diff -urNp -x '*.orig' linux-4.9/net/ipv6/raw.c linux-4.9/net/ipv6/raw.c
24473 --- linux-4.9/net/ipv6/raw.c    2021-02-24 15:47:32.617352663 +0100
24474 +++ linux-4.9/net/ipv6/raw.c    2021-02-24 15:47:45.141077785 +0100
24475 @@ -293,6 +293,13 @@ static int rawv6_bind(struct sock *sk, s
24476                                 goto out_unlock;
24477                 }
24478
24479 +               if (!v6_addr_in_nx_info(sk->sk_nx_info, &addr->sin6_addr, -1)) {
24480 +                       err = -EADDRNOTAVAIL;
24481 +                       if (dev)
24482 +                               dev_put(dev);
24483 +                       goto out;
24484 +               }
24485 +
24486                 /* ipv4 addr of the socket is invalid.  Only the
24487                  * unspecified and mapped address have a v4 equivalent.
24488                  */
24489 diff -urNp -x '*.orig' linux-4.9/net/ipv6/route.c linux-4.9/net/ipv6/route.c
24490 --- linux-4.9/net/ipv6/route.c  2021-02-24 15:47:32.617352663 +0100
24491 +++ linux-4.9/net/ipv6/route.c  2021-02-24 15:47:45.144411223 +0100
24492 @@ -3297,7 +3297,8 @@ static int rt6_fill_node(struct net *net
24493                                 goto nla_put_failure;
24494         } else if (dst) {
24495                 struct in6_addr saddr_buf;
24496 -               if (ip6_route_get_saddr(net, rt, dst, 0, &saddr_buf) == 0 &&
24497 +               if (ip6_route_get_saddr(net, rt, dst, 0, &saddr_buf,
24498 +                   (skb->sk ? skb->sk->sk_nx_info : NULL)) == 0 &&
24499                     nla_put_in6_addr(skb, RTA_PREFSRC, &saddr_buf))
24500                         goto nla_put_failure;
24501         }
24502 diff -urNp -x '*.orig' linux-4.9/net/ipv6/tcp_ipv6.c linux-4.9/net/ipv6/tcp_ipv6.c
24503 --- linux-4.9/net/ipv6/tcp_ipv6.c       2021-02-24 15:47:32.620686100 +0100
24504 +++ linux-4.9/net/ipv6/tcp_ipv6.c       2021-02-24 15:47:45.144411223 +0100
24505 @@ -149,11 +149,18 @@ static int tcp_v6_connect(struct sock *s
24506          */
24507
24508         if (ipv6_addr_any(&usin->sin6_addr)) {
24509 -               if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
24510 -                       ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
24511 -                                              &usin->sin6_addr);
24512 -               else
24513 -                       usin->sin6_addr = in6addr_loopback;
24514 +               struct nx_info *nxi =  sk->sk_nx_info;
24515 +
24516 +               if (nxi && nx_info_has_v6(nxi))
24517 +                       /* FIXME: remap lback? */
24518 +                       usin->sin6_addr = nxi->v6.ip;
24519 +               else {
24520 +                       if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
24521 +                               ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
24522 +                                                      &usin->sin6_addr);
24523 +                       else
24524 +                               usin->sin6_addr = in6addr_loopback;
24525 +               }
24526         }
24527
24528         addr_type = ipv6_addr_type(&usin->sin6_addr);
24529 diff -urNp -x '*.orig' linux-4.9/net/ipv6/udp.c linux-4.9/net/ipv6/udp.c
24530 --- linux-4.9/net/ipv6/udp.c    2021-02-24 15:47:32.620686100 +0100
24531 +++ linux-4.9/net/ipv6/udp.c    2021-02-24 15:47:45.144411223 +0100
24532 @@ -135,6 +135,10 @@ static int compute_score(struct sock *sk
24533                 if (inet->inet_dport != sport)
24534                         return -1;
24535                 score++;
24536 +               } else {
24537 +                       /* block non nx_info ips */
24538 +                       if (!v6_addr_in_nx_info(sk->sk_nx_info, daddr, -1))
24539 +                               return -1;
24540         }
24541
24542         if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
24543 diff -urNp -x '*.orig' linux-4.9/net/ipv6/xfrm6_policy.c linux-4.9/net/ipv6/xfrm6_policy.c
24544 --- linux-4.9/net/ipv6/xfrm6_policy.c   2021-02-24 15:47:32.620686100 +0100
24545 +++ linux-4.9/net/ipv6/xfrm6_policy.c   2021-02-24 15:47:45.144411223 +0100
24546 @@ -64,7 +64,8 @@ static int xfrm6_get_saddr(struct net *n
24547                 return -EHOSTUNREACH;
24548
24549         dev = ip6_dst_idev(dst)->dev;
24550 -       ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6, 0, &saddr->in6);
24551 +       ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6,
24552 +               0, &saddr->in6, NULL);
24553         dst_release(dst);
24554         return 0;
24555  }
24556 diff -urNp -x '*.orig' linux-4.9/net/netfilter/ipvs/ip_vs_xmit.c linux-4.9/net/netfilter/ipvs/ip_vs_xmit.c
24557 --- linux-4.9/net/netfilter/ipvs/ip_vs_xmit.c   2016-12-11 20:17:54.000000000 +0100
24558 +++ linux-4.9/net/netfilter/ipvs/ip_vs_xmit.c   2021-02-24 15:47:45.144411223 +0100
24559 @@ -381,7 +381,7 @@ __ip_vs_route_output_v6(struct net *net,
24560                 return dst;
24561         if (ipv6_addr_any(&fl6.saddr) &&
24562             ipv6_dev_get_saddr(net, ip6_dst_idev(dst)->dev,
24563 -                              &fl6.daddr, 0, &fl6.saddr) < 0)
24564 +                              &fl6.daddr, 0, &fl6.saddr, NULL) < 0)
24565                 goto out_err;
24566         if (do_xfrm) {
24567                 dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
24568 diff -urNp -x '*.orig' linux-4.9/net/netlink/af_netlink.c linux-4.9/net/netlink/af_netlink.c
24569 --- linux-4.9/net/netlink/af_netlink.c  2021-02-24 15:47:32.654020476 +0100
24570 +++ linux-4.9/net/netlink/af_netlink.c  2021-02-24 15:47:45.144411223 +0100
24571 @@ -63,6 +63,8 @@
24572  #include <linux/hash.h>
24573  #include <linux/genetlink.h>
24574  #include <linux/nospec.h>
24575 +#include <linux/vs_context.h>
24576 +#include <linux/vs_network.h>
24577
24578  #include <net/net_namespace.h>
24579  #include <net/sock.h>
24580 @@ -2478,7 +2480,8 @@ static void *__netlink_seq_next(struct s
24581                         if (err)
24582                                 return ERR_PTR(err);
24583                 }
24584 -       } while (sock_net(&nlk->sk) != seq_file_net(seq));
24585 +       } while ((sock_net(&nlk->sk) != seq_file_net(seq)) ||
24586 +               !nx_check(nlk->sk.sk_nid, VS_WATCH_P | VS_IDENT));
24587
24588         return nlk;
24589  }
24590 diff -urNp -x '*.orig' linux-4.9/net/packet/diag.c linux-4.9/net/packet/diag.c
24591 --- linux-4.9/net/packet/diag.c 2016-12-11 20:17:54.000000000 +0100
24592 +++ linux-4.9/net/packet/diag.c 2021-02-24 15:47:45.144411223 +0100
24593 @@ -4,6 +4,7 @@
24594  #include <linux/netdevice.h>
24595  #include <linux/packet_diag.h>
24596  #include <linux/percpu.h>
24597 +#include <linux/vs_network.h>
24598  #include <net/net_namespace.h>
24599  #include <net/sock.h>
24600
24601 @@ -201,6 +202,8 @@ static int packet_diag_dump(struct sk_bu
24602         sk_for_each(sk, &net->packet.sklist) {
24603                 if (!net_eq(sock_net(sk), net))
24604                         continue;
24605 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24606 +                       continue;
24607                 if (num < s_num)
24608                         goto next;
24609
24610 diff -urNp -x '*.orig' linux-4.9/net/socket.c linux-4.9/net/socket.c
24611 --- linux-4.9/net/socket.c      2021-02-24 15:47:32.680687977 +0100
24612 +++ linux-4.9/net/socket.c      2021-02-24 15:47:45.144411223 +0100
24613 @@ -100,10 +100,12 @@
24614
24615  #include <net/sock.h>
24616  #include <linux/netfilter.h>
24617 +#include <linux/vs_socket.h>
24618 +#include <linux/vs_inet.h>
24619 +#include <linux/vs_inet6.h>
24620
24621  #include <linux/if_tun.h>
24622  #include <linux/ipv6_route.h>
24623 -#include <linux/route.h>
24624  #include <linux/sockios.h>
24625  #include <linux/atalk.h>
24626  #include <net/busy_poll.h>
24627 @@ -619,8 +621,24 @@ EXPORT_SYMBOL(__sock_tx_timestamp);
24628
24629  static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
24630  {
24631 -       int ret = sock->ops->sendmsg(sock, msg, msg_data_left(msg));
24632 -       BUG_ON(ret == -EIOCBQUEUED);
24633 +       size_t size = msg_data_left(msg);
24634 +       int ret = sock->ops->sendmsg(sock, msg, size);
24635 +#if 0
24636 +       if (sock->sk) {
24637 +               if (!ret)
24638 +                       vx_sock_fail(sock->sk, size);
24639 +               else
24640 +                       vx_sock_send(sock->sk, size);
24641 +       }
24642 +#endif
24643 +       vxdprintk(VXD_CBIT(net, 7),
24644 +               "sock_sendmsg_nosec: %p[%p,%p,%p;%d/%d]:%zu/%zu",
24645 +               sock, sock->sk,
24646 +               (sock->sk)?sock->sk->sk_nx_info:0,
24647 +               (sock->sk)?sock->sk->sk_vx_info:0,
24648 +               (sock->sk)?sock->sk->sk_xid:0,
24649 +               (sock->sk)?sock->sk->sk_nid:0,
24650 +               size, msg_data_left(msg));
24651         return ret;
24652  }
24653
24654 @@ -1110,6 +1128,13 @@ int __sock_create(struct net *net, int f
24655         if (type < 0 || type >= SOCK_MAX)
24656                 return -EINVAL;
24657
24658 +       if (!nx_check(0, VS_ADMIN)) {
24659 +               if (family == PF_INET && !current_nx_info_has_v4())
24660 +                       return -EAFNOSUPPORT;
24661 +               if (family == PF_INET6 && !current_nx_info_has_v6())
24662 +                       return -EAFNOSUPPORT;
24663 +       }
24664 +
24665         /* Compatibility.
24666
24667            This uglymoron is moved from INET layer to here to avoid
24668 @@ -1240,6 +1265,7 @@ SYSCALL_DEFINE3(socket, int, family, int
24669         if (retval < 0)
24670                 goto out;
24671
24672 +       set_bit(SOCK_USER_SOCKET, &sock->flags);
24673         retval = sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK));
24674         if (retval < 0)
24675                 goto out_release;
24676 @@ -1281,10 +1307,12 @@ SYSCALL_DEFINE4(socketpair, int, family,
24677         err = sock_create(family, type, protocol, &sock1);
24678         if (err < 0)
24679                 goto out;
24680 +       set_bit(SOCK_USER_SOCKET, &sock1->flags);
24681
24682         err = sock_create(family, type, protocol, &sock2);
24683         if (err < 0)
24684                 goto out_release_1;
24685 +       set_bit(SOCK_USER_SOCKET, &sock2->flags);
24686
24687         err = sock1->ops->socketpair(sock1, sock2);
24688         if (err < 0)
24689 diff -urNp -x '*.orig' linux-4.9/net/sunrpc/auth.c linux-4.9/net/sunrpc/auth.c
24690 --- linux-4.9/net/sunrpc/auth.c 2016-12-11 20:17:54.000000000 +0100
24691 +++ linux-4.9/net/sunrpc/auth.c 2021-02-24 15:47:45.144411223 +0100
24692 @@ -15,6 +15,7 @@
24693  #include <linux/sunrpc/clnt.h>
24694  #include <linux/sunrpc/gss_api.h>
24695  #include <linux/spinlock.h>
24696 +#include <linux/vs_tag.h>
24697
24698  #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
24699  # define RPCDBG_FACILITY       RPCDBG_AUTH
24700 @@ -630,6 +631,7 @@ rpcauth_lookupcred(struct rpc_auth *auth
24701         memset(&acred, 0, sizeof(acred));
24702         acred.uid = cred->fsuid;
24703         acred.gid = cred->fsgid;
24704 +       acred.tag = make_ktag(&init_user_ns, dx_current_tag());
24705         acred.group_info = cred->group_info;
24706         ret = auth->au_ops->lookup_cred(auth, &acred, flags);
24707         return ret;
24708 @@ -669,6 +671,7 @@ rpcauth_bind_root_cred(struct rpc_task *
24709         struct auth_cred acred = {
24710                 .uid = GLOBAL_ROOT_UID,
24711                 .gid = GLOBAL_ROOT_GID,
24712 +               .tag = KTAGT_INIT(dx_current_tag()),
24713         };
24714
24715         dprintk("RPC: %5u looking up %s cred\n",
24716 diff -urNp -x '*.orig' linux-4.9/net/sunrpc/auth_unix.c linux-4.9/net/sunrpc/auth_unix.c
24717 --- linux-4.9/net/sunrpc/auth_unix.c    2016-12-11 20:17:54.000000000 +0100
24718 +++ linux-4.9/net/sunrpc/auth_unix.c    2021-02-24 15:47:45.144411223 +0100
24719 @@ -13,11 +13,13 @@
24720  #include <linux/sunrpc/clnt.h>
24721  #include <linux/sunrpc/auth.h>
24722  #include <linux/user_namespace.h>
24723 +#include <linux/vs_tag.h>
24724
24725  #define NFS_NGROUPS    16
24726
24727  struct unx_cred {
24728         struct rpc_cred         uc_base;
24729 +       ktag_t                  uc_tag;
24730         kgid_t                  uc_gid;
24731         kgid_t                  uc_gids[NFS_NGROUPS];
24732  };
24733 @@ -86,6 +88,7 @@ unx_create_cred(struct rpc_auth *auth, s
24734                 groups = NFS_NGROUPS;
24735
24736         cred->uc_gid = acred->gid;
24737 +       cred->uc_tag = acred->tag;
24738         for (i = 0; i < groups; i++)
24739                 cred->uc_gids[i] = acred->group_info->gid[i];
24740         if (i < NFS_NGROUPS)
24741 @@ -127,7 +130,9 @@ unx_match(struct auth_cred *acred, struc
24742         unsigned int i;
24743
24744
24745 -       if (!uid_eq(cred->uc_uid, acred->uid) || !gid_eq(cred->uc_gid, acred->gid))
24746 +       if (!uid_eq(cred->uc_uid, acred->uid) ||
24747 +           !gid_eq(cred->uc_gid, acred->gid) ||
24748 +           !tag_eq(cred->uc_tag, acred->tag))
24749                 return 0;
24750
24751         if (acred->group_info != NULL)
24752 @@ -152,7 +157,7 @@ unx_marshal(struct rpc_task *task, __be3
24753         struct rpc_clnt *clnt = task->tk_client;
24754         struct unx_cred *cred = container_of(task->tk_rqstp->rq_cred, struct unx_cred, uc_base);
24755         __be32          *base, *hold;
24756 -       int             i;
24757 +       int             i, tag;
24758
24759         *p++ = htonl(RPC_AUTH_UNIX);
24760         base = p++;
24761 @@ -163,8 +168,11 @@ unx_marshal(struct rpc_task *task, __be3
24762          */
24763         p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
24764
24765 -       *p++ = htonl((u32) from_kuid(&init_user_ns, cred->uc_uid));
24766 -       *p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gid));
24767 +       tag = task->tk_client->cl_tag;
24768 +       *p++ = htonl((u32) from_kuid(&init_user_ns,
24769 +               TAGINO_KUID(tag, cred->uc_uid, cred->uc_tag)));
24770 +       *p++ = htonl((u32) from_kgid(&init_user_ns,
24771 +               TAGINO_KGID(tag, cred->uc_gid, cred->uc_tag)));
24772         hold = p++;
24773         for (i = 0; i < 16 && gid_valid(cred->uc_gids[i]); i++)
24774                 *p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gids[i]));
24775 diff -urNp -x '*.orig' linux-4.9/net/sunrpc/clnt.c linux-4.9/net/sunrpc/clnt.c
24776 --- linux-4.9/net/sunrpc/clnt.c 2021-02-24 15:47:32.684021415 +0100
24777 +++ linux-4.9/net/sunrpc/clnt.c 2021-02-24 15:47:45.147744660 +0100
24778 @@ -31,6 +31,7 @@
24779  #include <linux/in.h>
24780  #include <linux/in6.h>
24781  #include <linux/un.h>
24782 +#include <linux/vs_cvirt.h>
24783
24784  #include <linux/sunrpc/clnt.h>
24785  #include <linux/sunrpc/addr.h>
24786 @@ -496,6 +497,9 @@ static struct rpc_clnt *rpc_create_xprt(
24787         if (!(args->flags & RPC_CLNT_CREATE_QUIET))
24788                 clnt->cl_chatty = 1;
24789
24790 +       /* TODO: handle RPC_CLNT_CREATE_TAGGED
24791 +       if (args->flags & RPC_CLNT_CREATE_TAGGED)
24792 +               clnt->cl_tag = 1; */
24793         return clnt;
24794  }
24795
24796 diff -urNp -x '*.orig' linux-4.9/net/unix/af_unix.c linux-4.9/net/unix/af_unix.c
24797 --- linux-4.9/net/unix/af_unix.c        2021-02-24 15:47:32.694021728 +0100
24798 +++ linux-4.9/net/unix/af_unix.c        2021-02-24 15:47:45.147744660 +0100
24799 @@ -117,6 +117,8 @@
24800  #include <net/checksum.h>
24801  #include <linux/security.h>
24802  #include <linux/freezer.h>
24803 +#include <linux/vs_context.h>
24804 +#include <linux/vs_limit.h>
24805
24806  struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
24807  EXPORT_SYMBOL_GPL(unix_socket_table);
24808 @@ -290,6 +292,8 @@ static struct sock *__unix_find_socket_b
24809                 if (!net_eq(sock_net(s), net))
24810                         continue;
24811
24812 +               if (!nx_check(s->sk_nid, VS_WATCH_P | VS_IDENT))
24813 +                       continue;
24814                 if (u->addr->len == len &&
24815                     !memcmp(u->addr->name, sunname, len))
24816                         goto found;
24817 @@ -2751,6 +2755,8 @@ static struct sock *unix_from_bucket(str
24818         for (sk = sk_head(&unix_socket_table[bucket]); sk; sk = sk_next(sk)) {
24819                 if (sock_net(sk) != seq_file_net(seq))
24820                         continue;
24821 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24822 +                       continue;
24823                 if (++count == offset)
24824                         break;
24825         }
24826 @@ -2768,6 +2774,8 @@ static struct sock *unix_next_socket(str
24827                 sk = sk_next(sk);
24828                 if (!sk)
24829                         goto next_bucket;
24830 +               if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24831 +                       continue;
24832                 if (sock_net(sk) == seq_file_net(seq))
24833                         return sk;
24834         }
24835 diff -urNp -x '*.orig' linux-4.9/net/unix/diag.c linux-4.9/net/unix/diag.c
24836 --- linux-4.9/net/unix/diag.c   2021-02-24 15:47:32.694021728 +0100
24837 +++ linux-4.9/net/unix/diag.c   2021-02-24 15:47:45.147744660 +0100
24838 @@ -4,6 +4,7 @@
24839  #include <linux/unix_diag.h>
24840  #include <linux/skbuff.h>
24841  #include <linux/module.h>
24842 +#include <linux/vs_network.h>
24843  #include <net/netlink.h>
24844  #include <net/af_unix.h>
24845  #include <net/tcp_states.h>
24846 @@ -200,6 +201,8 @@ static int unix_diag_dump(struct sk_buff
24847                 sk_for_each(sk, &unix_socket_table[slot]) {
24848                         if (!net_eq(sock_net(sk), net))
24849                                 continue;
24850 +                       if (!nx_check(sk->sk_nid, VS_WATCH_P | VS_IDENT))
24851 +                               continue;
24852                         if (num < s_num)
24853                                 goto next;
24854                         if (!(req->udiag_states & (1 << sk->sk_state)))
24855 diff -urNp -x '*.orig' linux-4.9/scripts/checksyscalls.sh linux-4.9/scripts/checksyscalls.sh
24856 --- linux-4.9/scripts/checksyscalls.sh  2016-12-11 20:17:54.000000000 +0100
24857 +++ linux-4.9/scripts/checksyscalls.sh  2021-02-24 15:47:45.147744660 +0100
24858 @@ -196,7 +196,6 @@ cat << EOF
24859  #define __IGNORE_afs_syscall
24860  #define __IGNORE_getpmsg
24861  #define __IGNORE_putpmsg
24862 -#define __IGNORE_vserver
24863  EOF
24864  }
24865
24866 diff -urNp -x '*.orig' linux-4.9/security/commoncap.c linux-4.9/security/commoncap.c
24867 --- linux-4.9/security/commoncap.c      2021-02-24 15:47:32.714022353 +0100
24868 +++ linux-4.9/security/commoncap.c      2021-02-24 15:47:45.147744660 +0100
24869 @@ -71,6 +71,7 @@ static void warn_setuid_and_fcaps_mixed(
24870  int cap_capable(const struct cred *cred, struct user_namespace *targ_ns,
24871                 int cap, int audit)
24872  {
24873 +       struct vx_info *vxi = current_vx_info(); /* FIXME: get vxi from cred? */
24874         struct user_namespace *ns = targ_ns;
24875
24876         /* See if cred has the capability in the target user namespace
24877 @@ -79,8 +80,12 @@ int cap_capable(const struct cred *cred,
24878          */
24879         for (;;) {
24880                 /* Do we have the necessary capabilities? */
24881 -               if (ns == cred->user_ns)
24882 -                       return cap_raised(cred->cap_effective, cap) ? 0 : -EPERM;
24883 +               if (ns == cred->user_ns) {
24884 +                       if (vx_info_flags(vxi, VXF_STATE_SETUP, 0) &&
24885 +                           cap_raised(cred->cap_effective, cap))
24886 +                               return 0;
24887 +                       return vx_cap_raised(vxi, cred->cap_effective, cap) ? 0 : -EPERM;
24888 +               }
24889
24890                 /* Have we tried all of the parent namespaces? */
24891                 if (ns == &init_user_ns)
24892 @@ -668,7 +673,7 @@ int cap_inode_setxattr(struct dentry *de
24893
24894         if (!strncmp(name, XATTR_SECURITY_PREFIX,
24895                      sizeof(XATTR_SECURITY_PREFIX) - 1) &&
24896 -           !capable(CAP_SYS_ADMIN))
24897 +               !vx_capable(CAP_SYS_ADMIN, VXC_FS_SECURITY))
24898                 return -EPERM;
24899         return 0;
24900  }
24901 @@ -694,7 +699,7 @@ int cap_inode_removexattr(struct dentry
24902
24903         if (!strncmp(name, XATTR_SECURITY_PREFIX,
24904                      sizeof(XATTR_SECURITY_PREFIX) - 1) &&
24905 -           !capable(CAP_SYS_ADMIN))
24906 +               !vx_capable(CAP_SYS_ADMIN, VXC_FS_SECURITY))
24907                 return -EPERM;
24908         return 0;
24909  }
24910 diff -urNp -x '*.orig' linux-4.9/security/selinux/hooks.c linux-4.9/security/selinux/hooks.c
24911 --- linux-4.9/security/selinux/hooks.c  2021-02-24 15:47:32.720689229 +0100
24912 +++ linux-4.9/security/selinux/hooks.c  2021-02-24 15:47:45.147744660 +0100
24913 @@ -67,7 +67,6 @@
24914  #include <linux/dccp.h>
24915  #include <linux/quota.h>
24916  #include <linux/un.h>          /* for Unix socket types */
24917 -#include <net/af_unix.h>       /* for Unix socket types */
24918  #include <linux/parser.h>
24919  #include <linux/nfs_mount.h>
24920  #include <net/ipv6.h>