syscalls/mlockall.c

   1 /*
   2  * SYSCALL_DEFINE1(mlockall, int, flags)
   3  */
   4 #include <stdlib.h>
   5 #include "sanitise.h"
   6 #include "random.h"
   7 #include "shm.h"
   8
   9 #define MCL_CURRENT     1
  10 #define MCL_FUTURE      2
  11
  12 static void sanitise_mlockall(int childno)
  13 {
  14         if (shm->syscall[childno].a1 != 0)
  15                 return;
  16
  17         if (rand_bool())
  18                 shm->syscall[childno].a1 = MCL_CURRENT;
  19         else
  20                 shm->syscall[childno].a1 = MCL_FUTURE;
  21 }
  22
  23
  24 struct syscallentry syscall_mlockall = {
  25         .name = "mlockall",
  26         .num_args = 1,
  27         .arg1name = "flags",
  28         .arg1type = ARG_LIST,
  29         .arg1list = {
  30                 .num = 2,
  31                 .values = { MCL_CURRENT, MCL_FUTURE },
  32         },
  33         .group = GROUP_VM,
  34         .sanitise = sanitise_mlockall,
  35 };