xref: /freebsd/lib/libc/sys/kevent.c (revision e8d8bef961a50d4dc22501cde4fb9fb0be1b2532)
1 /*
2  * Copyright (c) 2015 The FreeBSD Foundation.
3  * All rights reserved.
4  *
5  * Portions of this software were developed by Konstantin Belousov
6  * under sponsorship from the FreeBSD Foundation.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice(s), this list of conditions and the following disclaimer as
13  *    the first lines of this file unmodified other than the possible
14  *    addition of one or more copyright notices.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice(s), this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
27  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
29  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35 
36 #include <sys/types.h>
37 #include <sys/event.h>
38 #include <sys/time.h>
39 #include "libc_private.h"
40 
41 __weak_reference(__sys_kevent, __kevent);
42 
43 #pragma weak kevent
44 int
45 kevent(int kq, const struct kevent *changelist, int nchanges,
46     struct kevent *eventlist, int nevents, const struct timespec *timeout)
47 {
48 
49 	return (((int (*)(int, const struct kevent *, int,
50 	    struct kevent *, int, const struct timespec *))
51 	    __libc_interposing[INTERPOS_kevent])(kq, changelist, nchanges,
52 	   eventlist, nevents, timeout));
53 }
54