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/*
* include/linux/eventpoll.h ( Efficent event polling implementation )
* Copyright (C) 2001,...,2003 Davide Libenzi
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Davide Libenzi <davidel@xmailserver.org>
*
*/
#ifndef _LINUX_EVENTPOLL_H
#define _LINUX_EVENTPOLL_H
/* Valid opcodes to issue to sys_epoll_ctl() */
#define EPOLL_CTL_ADD 1
#define EPOLL_CTL_DEL 2
#define EPOLL_CTL_MOD 3
/* Set the Edge Triggered behaviour for the target file descriptor */
#define EPOLLET (1 << 31)
struct epoll_event {
__u32 events;
__u64 data;
};
#ifdef __KERNEL__
/* Forward declarations to avoid compiler errors */
struct file;
/* Kernel space functions implementing the user space "epoll" API */
asmlinkage long sys_epoll_create(int size);
asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);
asmlinkage long sys_epoll_wait(int epfd, struct epoll_event *events, int maxevents,
int timeout);
/* Used to initialize the epoll bits inside the "struct file" */
void eventpoll_init_file(struct file *file);
/* Used in fs/file_table.c:__fput() to unlink files from the eventpoll interface */
void eventpoll_release(struct file *file);
#endif /* #ifdef __KERNEL__ */
#endif /* #ifndef _LINUX_EVENTPOLL_H */
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