include/linux/restart_block.h

   1 /*
   2  * Common syscall restarting data
   3  */
   4 #ifndef __LINUX_RESTART_BLOCK_H
   5 #define __LINUX_RESTART_BLOCK_H
   6
   7 #include <linux/compiler.h>
   8 #include <linux/types.h>
   9
  10 struct timespec;
  11 struct compat_timespec;
  12 struct pollfd;
  13
  14 /*
  15  * System call restart block.
  16  */
  17 struct restart_block {
  18         long (*fn)(struct restart_block *);
  19         union {
  20                 /* For futex_wait and futex_wait_requeue_pi */
  21                 struct {
  22                         u32 __user *uaddr;
  23                         u32 val;
  24                         u32 flags;
  25                         u32 bitset;
  26                         u64 time;
  27                         u32 __user *uaddr2;
  28                 } futex;
  29                 /* For nanosleep */
  30                 struct {
  31                         clockid_t clockid;
  32                         struct timespec __user *rmtp;
  33 #ifdef CONFIG_COMPAT
  34                         struct compat_timespec __user *compat_rmtp;
  35 #endif
  36                         u64 expires;
  37                 } nanosleep;
  38                 /* For poll */
  39                 struct {
  40                         struct pollfd __user *ufds;
  41                         int nfds;
  42                         int has_timeout;
  43                         unsigned long tv_sec;
  44                         unsigned long tv_nsec;
  45                 } poll;
  46         };
  47 };
  48
  49 extern long do_no_restart_syscall(struct restart_block *parm);
  50
  51 #endif /* __LINUX_RESTART_BLOCK_H */