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
epoll_create(int size)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
epoll_ctl(int epfd,int op,int fd,struct epoll_event * event)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
epoll_wait(int epfd,struct epoll_event * events,int maxevents,int timeout)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