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