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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 | |
11 | #include <linux/types.h> |
12 | /* For O_CLOEXEC and O_NONBLOCK */ |
13 | #include <linux/fcntl.h> |
14 | |
15 | /* Flags for signalfd4. */ |
16 | #define SFD_CLOEXEC O_CLOEXEC |
17 | #define SFD_NONBLOCK O_NONBLOCK |
18 | |
19 | struct signalfd_siginfo { |
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; |
36 | |
37 | /* |
38 | * Pad strcture to 128 bytes. Remember to update the |
39 | * pad size when you add new members. We use a fixed |
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 | /* |
55 | * Deliver the signal to listening signalfd. |
56 | */ |
57 | static inline void signalfd_notify(struct task_struct *tsk, int sig) |
58 | { |
59 | if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh))) |
60 | wake_up(&tsk->sighand->signalfd_wqh); |
61 | } |
62 | |
63 | #else /* CONFIG_SIGNALFD */ |
64 | |
65 | static inline void signalfd_notify(struct task_struct *tsk, int sig) { } |
66 | |
67 | #endif /* CONFIG_SIGNALFD */ |
68 | |
69 | #endif /* __KERNEL__ */ |
70 | |
71 | #endif /* _LINUX_SIGNALFD_H */ |
72 | |
73 |
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