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 #include <linux/types.h> 18 19 20 /* Valid opcodes to issue to sys_epoll_ctl() */ 21 #define EPOLL_CTL_ADD 1 22 #define EPOLL_CTL_DEL 2 23 #define EPOLL_CTL_MOD 3 24 25 /* Set the One Shot behaviour for the target file descriptor */ 26 #define EPOLLONESHOT (1 << 30) 27 28 /* Set the Edge Triggered behaviour for the target file descriptor */ 29 #define EPOLLET (1 << 31) 30 31 /* 32 * On x86-64 make the 64bit structure have the same alignment as the 33 * 32bit structure. This makes 32bit emulation easier. 34 * 35 * UML/x86_64 needs the same packing as x86_64 36 */ 37 #ifdef __x86_64__ 38 #define EPOLL_PACKED __attribute__((packed)) 39 #else 40 #define EPOLL_PACKED 41 #endif 42 43 struct epoll_event { 44 __u32 events; 45 __u64 data; 46 } EPOLL_PACKED; 47 48 49 #endif /* #ifndef _LINUX_EVENTPOLL_H */ 50 51