xref: /openbsd/lib/libc/sys/w_sigaction.c (revision d89ec533)
1 /*	$OpenBSD: w_sigaction.c,v 1.1 2015/10/23 04:39:24 guenther Exp $ */
2 /*
3  * Copyright (c) 2005 Ted Unangst <tedu@openbsd.org>
4  * All Rights Reserved.
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 /*
19  * signals
20  */
21 
22 #include <signal.h>
23 #include <errno.h>
24 
25 int
26 WRAP(sigaction)(int sig, const struct sigaction *act, struct sigaction *oact)
27 {
28 	struct sigaction sa;
29 
30 	if (sig == SIGTHR) {
31 		errno = EINVAL;
32 		return (-1);
33 	}
34 	if (act != NULL && sigismember(&act->sa_mask, SIGTHR)) {
35 		sa = *act;
36 		sigdelset(&sa.sa_mask, SIGTHR);
37 		act = &sa;
38 	}
39 	return (sigaction(sig, act, oact));
40 }
41 DEF_WRAP(sigaction);
42