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