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
39int
40epoll_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
53int
54epoll_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
60int
61epoll_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