[mirror_ubuntu-zesty-kernel.git] / include / linux / signalfd.h

/*
 *  include/linux/signalfd.h
 *
 *  Copyright (C) 2007  Davide Libenzi <davidel@xmailserver.org>
 *
 */

#ifndef _LINUX_SIGNALFD_H
#define _LINUX_SIGNALFD_H


struct signalfd_siginfo {
	__u32 ssi_signo;
	__s32 ssi_errno;
	__s32 ssi_code;
	__u32 ssi_pid;
	__u32 ssi_uid;
	__s32 ssi_fd;
	__u32 ssi_tid;
	__u32 ssi_band;
	__u32 ssi_overrun;
	__u32 ssi_trapno;
	__s32 ssi_status;
	__s32 ssi_int;
	__u64 ssi_ptr;
	__u64 ssi_utime;
	__u64 ssi_stime;
	__u64 ssi_addr;

	/*
	 * Pad strcture to 128 bytes. Remember to update the
	 * pad size when you add new memebers. We use a fixed
	 * size structure to avoid compatibility problems with
	 * future versions, and we leave extra space for additional
	 * members. We use fixed size members because this strcture
	 * comes out of a read(2) and we really don't want to have
	 * a compat on read(2).
	 */
	__u8 __pad[48];
};


#ifdef __KERNEL__

#ifdef CONFIG_SIGNALFD

/*
 * Deliver the signal to listening signalfd.
 */
static inline void signalfd_notify(struct task_struct *tsk, int sig)
{
	if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh)))
		wake_up(&tsk->sighand->signalfd_wqh);
}

#else /* CONFIG_SIGNALFD */

static inline void signalfd_notify(struct task_struct *tsk, int sig) { }

#endif /* CONFIG_SIGNALFD */

#endif /* __KERNEL__ */

#endif /* _LINUX_SIGNALFD_H */
Commit	Line	Data
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
	11
	12	struct signalfd_siginfo {
96358de6 DL	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;
fba2afaa DL	29
	30	/*
	31	* Pad strcture to 128 bytes. Remember to update the
	32	* pad size when you add new memebers. 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	/*
b8fceee1	48	* Deliver the signal to listening signalfd.
fba2afaa DL	49	*/
	50	static inline void signalfd_notify(struct task_struct *tsk, int sig)
	51	{
b8fceee1 DL	52	if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh)))
b8fceee1 DL	53	wake_up(&tsk->sighand->signalfd_wqh);
fba2afaa DL	54	}
	55
	56	#else /* CONFIG_SIGNALFD */
	57
b8fceee1	58	static inline void signalfd_notify(struct task_struct *tsk, int sig) { }
fba2afaa DL	59
	60	#endif /* CONFIG_SIGNALFD */
	61
	62	#endif /* __KERNEL__ */
	63
	64	#endif /* _LINUX_SIGNALFD_H */
	65