1/* 2 * include/linux/eventpoll.h ( Efficent event polling implementation ) 3 * Copyright (C) 2001,...,2006 Davide Libenzi 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * Davide Libenzi <davidel@xmailserver.org> 11 * 12 */ 13 14#ifndef _LINUX_EVENTPOLL_H 15#define _LINUX_EVENTPOLL_H 16 17/* For O_CLOEXEC */ 18#include <linux/fcntl.h> 19#include <linux/types.h> 20 21/* Flags for epoll_create1. */ 22#define EPOLL_CLOEXEC O_CLOEXEC 23 24/* Valid opcodes to issue to sys_epoll_ctl() */ 25#define EPOLL_CTL_ADD 1 26#define EPOLL_CTL_DEL 2 27#define EPOLL_CTL_MOD 3 28 29/* Set the One Shot behaviour for the target file descriptor */ 30#define EPOLLONESHOT (1 << 30) 31 32/* Set the Edge Triggered behaviour for the target file descriptor */ 33#define EPOLLET (1 << 31) 34 35/* 36 * On x86-64 make the 64bit structure have the same alignment as the 37 * 32bit structure. This makes 32bit emulation easier. 38 * 39 * UML/x86_64 needs the same packing as x86_64 40 */ 41#ifdef __x86_64__ 42#define EPOLL_PACKED __attribute__((packed)) 43#else 44#define EPOLL_PACKED 45#endif 46 47struct epoll_event { 48 __u32 events; 49 __u64 data; 50} EPOLL_PACKED; 51 52 53#endif /* #ifndef _LINUX_EVENTPOLL_H */ 54 55