1 /* 2 * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without modification, 5 * are permitted provided that the following conditions are met: 6 * 7 * 1. Redistributions of source code must retain the above copyright notice, this list of 8 * conditions and the following disclaimer. 9 * 10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 11 * of conditions and the following disclaimer in the documentation and/or other materials 12 * provided with the distribution. 13 * 14 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific prior written 16 * permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 25 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 27 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 28 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _FS_EPOLL_H_ 32 #define _FS_EPOLL_H_ 33 34 #include "los_typedef.h" 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #ifndef FAR 41 #define FAR 42 #endif 43 44 #define EPOLL_CLOEXEC O_CLOEXEC 45 #define EPOLL_NONBLOCK O_NONBLOCK 46 47 #define EPOLLIN 0x001 48 #define EPOLLPRI 0x002 49 #define EPOLLOUT 0x004 50 #define EPOLLRDNORM 0x040 51 #define EPOLLNVAL 0x020 52 #define EPOLLRDBAND 0x080 53 #define EPOLLWRNORM 0x100 54 #define EPOLLWRBAND 0x200 55 #define EPOLLMSG 0x400 56 #define EPOLLERR 0x008 57 #define EPOLLHUP 0x010 58 59 #define EPOLL_CTL_ADD 1 60 #define EPOLL_CTL_DEL 2 61 #define EPOLL_CTL_MOD 3 62 63 typedef union epoll_data { 64 void *ptr; 65 int fd; 66 UINT32 u32; 67 UINT64 u64; 68 } epoll_data_t; 69 70 struct epoll_event { 71 UINT32 events; 72 epoll_data_t data; 73 }; 74 75 int epoll_create1(int flags); 76 int epoll_close(int epfd); 77 int epoll_ctl(int epfd, int op, int fd, struct epoll_event *ev); 78 int epoll_wait(int epfd, FAR struct epoll_event *evs, int maxevents, int timeout); 79 80 #ifdef __cplusplus 81 } 82 #endif 83 84 #endif /* sys/epoll.h */ 85