1 /* $NetBSD: epoll_sub.c,v 1.1.1.3 2017/01/31 21:14:52 christos Exp $ */ 2 /* 3 * Copyright 2003-2009 Niels Provos <provos@citi.umich.edu> 4 * Copyright 2009-2012 Niels Provos and Nick Mathewson 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #include "evconfig-private.h" 29 #include <stdint.h> 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/syscall.h> 34 #include <sys/epoll.h> 35 #include <unistd.h> 36 #include <errno.h> 37 38 int 39 epoll_create(int size) 40 { 41 #if !defined(__NR_epoll_create) && defined(__NR_epoll_create1) 42 if (size <= 0) { 43 errno = EINVAL; 44 return -1; 45 } 46 return (syscall(__NR_epoll_create1, 0)); 47 #else 48 return (syscall(__NR_epoll_create, size)); 49 #endif 50 } 51 52 int 53 epoll_ctl(int epfd, int op, int fd, struct epoll_event *event) 54 { 55 56 return (syscall(__NR_epoll_ctl, epfd, op, fd, event)); 57 } 58 59 int 60 epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout) 61 { 62 #if !defined(__NR_epoll_wait) && defined(__NR_epoll_pwait) 63 return (syscall(__NR_epoll_pwait, epfd, events, maxevents, timeout, NULL, 0)); 64 #else 65 return (syscall(__NR_epoll_wait, epfd, events, maxevents, timeout)); 66 #endif 67 } 68