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fba2afaa DL |
1 | /* |
2 | * include/linux/signalfd.h | |
3 | * | |
4 | * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org> | |
5 | * | |
6 | */ | |
7 | ||
8 | #ifndef _LINUX_SIGNALFD_H | |
9 | #define _LINUX_SIGNALFD_H | |
10 | ||
a788fd53 | 11 | #include <linux/types.h> |
5fb5e049 | 12 | /* For O_CLOEXEC and O_NONBLOCK */ |
9deb27ba UD |
13 | #include <linux/fcntl.h> |
14 | ||
15 | /* Flags for signalfd4. */ | |
16 | #define SFD_CLOEXEC O_CLOEXEC | |
5fb5e049 | 17 | #define SFD_NONBLOCK O_NONBLOCK |
fba2afaa DL |
18 | |
19 | struct signalfd_siginfo { | |
96358de6 DL |
20 | __u32 ssi_signo; |
21 | __s32 ssi_errno; | |
22 | __s32 ssi_code; | |
23 | __u32 ssi_pid; | |
24 | __u32 ssi_uid; | |
25 | __s32 ssi_fd; | |
26 | __u32 ssi_tid; | |
27 | __u32 ssi_band; | |
28 | __u32 ssi_overrun; | |
29 | __u32 ssi_trapno; | |
30 | __s32 ssi_status; | |
31 | __s32 ssi_int; | |
32 | __u64 ssi_ptr; | |
33 | __u64 ssi_utime; | |
34 | __u64 ssi_stime; | |
35 | __u64 ssi_addr; | |
fba2afaa DL |
36 | |
37 | /* | |
38 | * Pad strcture to 128 bytes. Remember to update the | |
14e4a0f2 | 39 | * pad size when you add new members. We use a fixed |
fba2afaa DL |
40 | * size structure to avoid compatibility problems with |
41 | * future versions, and we leave extra space for additional | |
42 | * members. We use fixed size members because this strcture | |
43 | * comes out of a read(2) and we really don't want to have | |
44 | * a compat on read(2). | |
45 | */ | |
46 | __u8 __pad[48]; | |
47 | }; | |
48 | ||
49 | ||
50 | #ifdef __KERNEL__ | |
51 | ||
52 | #ifdef CONFIG_SIGNALFD | |
53 | ||
54 | /* | |
b8fceee1 | 55 | * Deliver the signal to listening signalfd. |
fba2afaa DL |
56 | */ |
57 | static inline void signalfd_notify(struct task_struct *tsk, int sig) | |
58 | { | |
b8fceee1 DL |
59 | if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh))) |
60 | wake_up(&tsk->sighand->signalfd_wqh); | |
fba2afaa DL |
61 | } |
62 | ||
63 | #else /* CONFIG_SIGNALFD */ | |
64 | ||
b8fceee1 | 65 | static inline void signalfd_notify(struct task_struct *tsk, int sig) { } |
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66 | |
67 | #endif /* CONFIG_SIGNALFD */ | |
68 | ||
69 | #endif /* __KERNEL__ */ | |
70 | ||
71 | #endif /* _LINUX_SIGNALFD_H */ | |
72 |