1 /* $NetBSD: epoll_sub.c,v 1.5 2020/05/25 20:47:33 christos Exp $ */ 2 3 /* 4 * Copyright 2003-2009 Niels Provos <provos@citi.umich.edu> 5 * Copyright 2009-2012 Niels Provos and Nick Mathewson 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #include "evconfig-private.h" 30 #include <stdint.h> 31 32 #include <sys/param.h> 33 #include <sys/types.h> 34 #include <sys/syscall.h> 35 #include <sys/epoll.h> 36 #include <unistd.h> 37 #include <errno.h> 38 39 int 40 epoll_create(int size) 41 { 42 #if !defined(__NR_epoll_create) && defined(__NR_epoll_create1) 43 if (size <= 0) { 44 errno = EINVAL; 45 return -1; 46 } 47 return (syscall(__NR_epoll_create1, 0)); 48 #else 49 return (syscall(__NR_epoll_create, size)); 50 #endif 51 } 52 53 int 54 epoll_ctl(int epfd, int op, int fd, struct epoll_event *event) 55 { 56 57 return (syscall(__NR_epoll_ctl, epfd, op, fd, event)); 58 } 59 60 int 61 epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout) 62 { 63 #if !defined(__NR_epoll_wait) && defined(__NR_epoll_pwait) 64 return (syscall(__NR_epoll_pwait, epfd, events, maxevents, timeout, NULL, 0)); 65 #else 66 return (syscall(__NR_epoll_wait, epfd, events, maxevents, timeout)); 67 #endif 68 } 69