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