syscalls/futex.c

   1 /*
   2  * SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
   3          struct timespec __user *, utime, u32 __user *, uaddr2, u32, val3)
   4  */
   5 #include <linux/futex.h>
   6 #include "sanitise.h"
   7
   8 /*
   9  * TODO:
  10  * FUTEX_FD returns ENOSYS as of 2.6.26. Somehow handle this.
  11  * FUTEX_WAKE_OP also returns ENOSYS
  12  */
  13
  14 struct syscallentry syscall_futex = {
  15         .name = "futex",
  16         .num_args = 6,
  17         .arg1name = "uaddr",
  18         .arg1type = ARG_ADDRESS,
  19         .arg2name = "op",
  20         .arg2type = ARG_OP,
  21         .arg2list = {
  22                 .num = 13,
  23                 .values = { FUTEX_WAIT, FUTEX_WAKE, FUTEX_FD, FUTEX_REQUEUE,
  24                         FUTEX_CMP_REQUEUE, FUTEX_WAKE_OP, FUTEX_LOCK_PI, FUTEX_UNLOCK_PI,
  25                         FUTEX_TRYLOCK_PI, FUTEX_WAIT_BITSET, FUTEX_WAKE_BITSET, FUTEX_WAIT_REQUEUE_PI,
  26                         FUTEX_CMP_REQUEUE_PI,
  27                 },
  28         },
  29         .arg3name = "val",
  30         .arg4name = "utime",
  31         .arg4type = ARG_ADDRESS,
  32         .arg5name = "uaddr2",
  33         .arg5type = ARG_ADDRESS,
  34         .arg6name = "val3",
  35         .rettype = RET_FD,              // FIXME: Needs to mutate depending on 'op' value
  36         .flags = NEED_ALARM,
  37 };