[linux.git] / include / linux / eventfd.h

/*
 *  include/linux/eventfd.h
 *
 *  Copyright (C) 2007  Davide Libenzi <[email protected]>
 *
 */

#ifndef _LINUX_EVENTFD_H
#define _LINUX_EVENTFD_H

#ifdef CONFIG_EVENTFD

/* For O_CLOEXEC and O_NONBLOCK */
#include <linux/fcntl.h>

/* Flags for eventfd2.  */
#define EFD_CLOEXEC O_CLOEXEC
#define EFD_NONBLOCK O_NONBLOCK

struct file *eventfd_fget(int fd);
int eventfd_signal(struct file *file, int n);

#else /* CONFIG_EVENTFD */

#define eventfd_fget(fd) ERR_PTR(-ENOSYS)
static inline int eventfd_signal(struct file *file, int n)
{ return 0; }

#endif /* CONFIG_EVENTFD */

#endif /* _LINUX_EVENTFD_H */
Commit	Line	Data
e1ad7468 DL	1	/*
	2	* include/linux/eventfd.h
	3	*
	4	* Copyright (C) 2007 Davide Libenzi <[email protected]>
	5	*
	6	*/
	7
	8	#ifndef _LINUX_EVENTFD_H
	9	#define _LINUX_EVENTFD_H
	10
e1ad7468 DL	11	#ifdef CONFIG_EVENTFD
e1ad7468 DL	12
e7d476df	13	/* For O_CLOEXEC and O_NONBLOCK */
b087498e UD	14	#include <linux/fcntl.h>
	15
	16	/* Flags for eventfd2. */
	17	#define EFD_CLOEXEC O_CLOEXEC
e7d476df	18	#define EFD_NONBLOCK O_NONBLOCK
b087498e	19
e1ad7468 DL	20	struct file *eventfd_fget(int fd);
	21	int eventfd_signal(struct file *file, int n);
	22
	23	#else /* CONFIG_EVENTFD */
	24
	25	#define eventfd_fget(fd) ERR_PTR(-ENOSYS)
d2fd8996 RD	26	static inline int eventfd_signal(struct file *file, int n)
d2fd8996 RD	27	{ return 0; }
e1ad7468 DL	28
	29	#endif /* CONFIG_EVENTFD */
	30
e1ad7468 DL	31	#endif /* _LINUX_EVENTFD_H */
e1ad7468 DL	32