syscalls/madvise.c

   1 /*
   2  * SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior)
   3  */
   4 #include <stdlib.h>
   5 #include <sys/mman.h>
   6 #include "maps.h"
   7 #include "sanitise.h"
   8 #include "shm.h"
   9 #include "compat.h"
  10
  11 static void sanitise_madvise(int childno)
  12 {
  13         (void) common_set_mmap_ptr_len(childno);
  14 }
  15
  16 struct syscallentry syscall_madvise = {
  17         .name = "madvise",
  18         .num_args = 3,
  19         .arg1name = "start",
  20         .arg1type = ARG_MMAP,
  21         .arg2name = "len_in",
  22         .arg3name = "advice",
  23         .arg3type = ARG_OP,
  24         .arg3list = {
  25                 .num = 14,
  26                 .values = { MADV_NORMAL, MADV_RANDOM, MADV_SEQUENTIAL, MADV_WILLNEED,
  27                             MADV_DONTNEED, MADV_REMOVE, MADV_DONTFORK, MADV_DOFORK,
  28                             MADV_MERGEABLE, MADV_UNMERGEABLE, MADV_HUGEPAGE, MADV_NOHUGEPAGE,
  29                             MADV_DONTDUMP, MADV_DODUMP, },
  30         },
  31         .group = GROUP_VM,
  32         .sanitise = sanitise_madvise,
  33 };