1 /*
2 * Copyright (c) 2004 Gunnar Ritter
3 *
4 * This software is provided 'as-is', without any express or implied
5 * warranty. In no event will the authors be held liable for any damages
6 * arising from the use of this software.
7 *
8 * Permission is granted to anyone to use this software for any purpose,
9 * including commercial applications, and to alter it and redistribute
10 * it freely, subject to the following restrictions:
11 *
12 * 1. The origin of this software must not be misrepresented; you must not
13 * claim that you wrote the original software. If you use this software
14 * in a product, an acknowledgment in the product documentation would be
15 * appreciated but is not required.
16 *
17 * 2. Altered source versions must be plainly marked as such, and must not be
18 * misrepresented as being the original software.
19 *
20 * 3. This notice may not be removed or altered from any source distribution.
21 */
22 /* Sccsid @(#)sighold.c 1.7 (gritter) 1/22/06 */
23
24 #if defined (__FreeBSD__) || defined (__dietlibc__) || defined (__NetBSD__) || \
25 defined (__OpenBSD__) || defined (__DragonFly__) || defined (__APPLE__)
26 #include <signal.h>
27 #include "sigset.h"
28
29 int
sighold(int sig)30 sighold(int sig)
31 {
32 sigset_t set, oset;
33
34 if (sig <= 0)
35 return -1;
36 sigemptyset(&set);
37 sigaddset(&set, sig);
38 return sigprocmask(SIG_BLOCK, &set, &oset);
39 }
40 #endif /* __FreeBSD__ || __dietlibc__ || __NetBSD__ || __OpenBSD__ ||
41 __DragonFly__ || __APPLE__ */
42