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