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 | #include <linux/time64.h> |
11 | |
12 | struct timespec; |
13 | struct old_timespec32; |
14 | struct pollfd; |
15 | |
16 | enum timespec_type { |
17 | TT_NONE = 0, |
18 | TT_NATIVE = 1, |
19 | TT_COMPAT = 2, |
20 | }; |
21 | |
22 | /* |
23 | * System call restart block. |
24 | */ |
25 | struct restart_block { |
26 | unsigned long arch_data; |
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 __kernel_timespec __user *rmtp; |
44 | struct old_timespec32 __user *compat_rmtp; |
45 | }; |
46 | u64 expires; |
47 | } nanosleep; |
48 | /* For poll */ |
49 | struct { |
50 | struct pollfd __user *ufds; |
51 | int nfds; |
52 | int has_timeout; |
53 | unsigned long tv_sec; |
54 | unsigned long tv_nsec; |
55 | } poll; |
56 | }; |
57 | }; |
58 | |
59 | extern long do_no_restart_syscall(struct restart_block *parm); |
60 | |
61 | #endif /* __LINUX_RESTART_BLOCK_H */ |
62 | |