1 /* $OpenBSD: setsignal.c,v 1.6 2015/10/14 04:55:17 guenther Exp $ */
2
3 /*
4 * Copyright (c) 1997
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that: (1) source code distributions
9 * retain the above copyright notice and this paragraph in its entirety, (2)
10 * distributions including binary code include the above copyright notice and
11 * this paragraph in its entirety in the documentation or other materials
12 * provided with the distribution, and (3) all advertising materials mentioning
13 * features or use of this software display the following acknowledgement:
14 * ``This product includes software developed by the University of California,
15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16 * the University nor the names of its contributors may be used to endorse
17 * or promote products derived from this software without specific prior
18 * written permission.
19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 */
23
24 #include <sys/types.h>
25
26 #include <signal.h>
27 #include <string.h>
28
29 #include "setsignal.h"
30
31 void
setsignal(int sig,void (* func)(int))32 setsignal(int sig, void (*func)(int))
33 {
34 struct sigaction sa;
35
36 if (sigaction(sig, NULL, &sa) == 0 && sa.sa_handler != SIG_IGN) {
37 sa.sa_handler = func;
38 sa.sa_flags = SA_RESTART;
39 if (sig == SIGCHLD)
40 sa.sa_flags |= SA_NOCLDSTOP;
41 sigemptyset(&sa.sa_mask);
42 sigaction(sig, &sa, NULL);
43 }
44 }
45
46