1 /* $NetBSD: epoll.h,v 1.3 2024/10/30 15:56:12 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Roman Divacky 5 * Copyright (c) 2014 Dmitry Chagin <dchagin@FreeBSD.org> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _SYS_EPOLL_H_ 32 #define _SYS_EPOLL_H_ 33 34 #include <sys/fcntl.h> /* for O_CLOEXEC */ 35 #include <sys/featuretest.h> 36 #include <sys/sigtypes.h> /* for sigset_t */ 37 #include <sys/types.h> /* for uint32_t, uint64_t */ 38 39 struct timespec; 40 41 #define EPOLL_CLOEXEC O_CLOEXEC 42 43 #define EPOLLIN 0x00000001 44 #define EPOLLPRI 0x00000002 45 #define EPOLLOUT 0x00000004 46 #define EPOLLERR 0x00000008 47 #define EPOLLHUP 0x00000010 48 #define EPOLLRDNORM 0x00000040 49 #define EPOLLRDBAND 0x00000080 50 #define EPOLLWRNORM 0x00000100 51 #define EPOLLWRBAND 0x00000200 52 #define EPOLLMSG 0x00000400 53 #define EPOLLRDHUP 0x00002000 54 #define EPOLLWAKEUP 0x20000000 55 #define EPOLLONESHOT 0x40000000 56 #define EPOLLET 0x80000000 57 58 #define EPOLL_CTL_ADD 1 59 #define EPOLL_CTL_DEL 2 60 #define EPOLL_CTL_MOD 3 61 62 #ifdef _KERNEL 63 #define EPOLL_MAX_EVENTS (4 * 1024 * 1024) 64 typedef uint64_t epoll_data_t; 65 #else 66 union epoll_data { 67 void *ptr; 68 int fd; 69 uint32_t u32; 70 uint64_t u64; 71 }; 72 73 typedef union epoll_data epoll_data_t; 74 #endif 75 76 struct epoll_event { 77 uint32_t events; 78 epoll_data_t data; 79 }; 80 81 #ifdef _KERNEL 82 int epoll_ctl_common(struct lwp *l, register_t *retval, int epfd, int op, 83 int fd, struct epoll_event *event); 84 int epoll_wait_common(struct lwp *l, register_t *retval, int epfd, 85 struct epoll_event *events, int maxevents, struct timespec *tsp, 86 const sigset_t *nss); 87 #else /* !_KERNEL */ 88 __BEGIN_DECLS 89 #ifdef _NETBSD_SOURCE 90 int epoll_create(int size); 91 int epoll_create1(int flags); 92 int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event); 93 int epoll_wait(int epfd, struct epoll_event *events, int maxevents, 94 int timeout); 95 int epoll_pwait(int epfd, struct epoll_event *events, int maxevents, 96 int timeout, const sigset_t *sigmask); 97 int epoll_pwait2(int epfd, struct epoll_event *events, int maxevents, 98 const struct timespec *timeout, const sigset_t *sigmask); 99 #endif /* _NETBSD_SOURCE */ 100 __END_DECLS 101 #endif /* !_KERNEL */ 102 103 #endif /* !_SYS_EPOLL_H_ */ 104