Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[linux-2.6-microblaze.git] / include / linux / restart_block.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Common syscall restarting data
4  */
5 #ifndef __LINUX_RESTART_BLOCK_H
6 #define __LINUX_RESTART_BLOCK_H
7
8 #include <linux/compiler.h>
9 #include <linux/types.h>
10
11 struct timespec;
12 struct compat_timespec;
13 struct pollfd;
14
15 enum timespec_type {
16         TT_NONE         = 0,
17         TT_NATIVE       = 1,
18 #ifdef CONFIG_COMPAT
19         TT_COMPAT       = 2,
20 #endif
21 };
22
23 /*
24  * System call restart block.
25  */
26 struct restart_block {
27         long (*fn)(struct restart_block *);
28         union {
29                 /* For futex_wait and futex_wait_requeue_pi */
30                 struct {
31                         u32 __user *uaddr;
32                         u32 val;
33                         u32 flags;
34                         u32 bitset;
35                         u64 time;
36                         u32 __user *uaddr2;
37                 } futex;
38                 /* For nanosleep */
39                 struct {
40                         clockid_t clockid;
41                         enum timespec_type type;
42                         union {
43                                 struct timespec __user *rmtp;
44 #ifdef CONFIG_COMPAT
45                                 struct compat_timespec __user *compat_rmtp;
46 #endif
47                         };
48                         u64 expires;
49                 } nanosleep;
50                 /* For poll */
51                 struct {
52                         struct pollfd __user *ufds;
53                         int nfds;
54                         int has_timeout;
55                         unsigned long tv_sec;
56                         unsigned long tv_nsec;
57                 } poll;
58         };
59 };
60
61 extern long do_no_restart_syscall(struct restart_block *parm);
62
63 #endif /* __LINUX_RESTART_BLOCK_H */