annotate sigrelse.c @ 4:4165f1b57d18
Become SUSv3 compatible and thus remove own regexp code
The Heirloom tools can be compiled to comply to several standards.
This version does not need this flexibility. We can omit the
regexp code and use the system's, by using the SU3 variant of ed.
This is the latest of the supported standards.
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markus schnalke <meillo@marmaro.de> |
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Mon, 13 Apr 2015 17:26:51 +0200 |
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1 /*
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2 * Copyright (c) 2004 Gunnar Ritter
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3 *
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4 * This software is provided 'as-is', without any express or implied
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5 * warranty. In no event will the authors be held liable for any damages
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6 * arising from the use of this software.
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7 *
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8 * Permission is granted to anyone to use this software for any purpose,
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9 * including commercial applications, and to alter it and redistribute
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10 * it freely, subject to the following restrictions:
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11 *
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12 * 1. The origin of this software must not be misrepresented; you must not
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13 * claim that you wrote the original software. If you use this software
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14 * in a product, an acknowledgment in the product documentation would be
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15 * appreciated but is not required.
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16 *
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17 * 2. Altered source versions must be plainly marked as such, and must not be
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18 * misrepresented as being the original software.
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19 *
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20 * 3. This notice may not be removed or altered from any source distribution.
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21 */
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22 /* Sccsid @(#)sigrelse.c 1.8 (gritter) 1/22/06 */
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23
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24 #if defined (__FreeBSD__) || defined (__dietlibc__) || defined (__NetBSD__) || \
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25 defined (__OpenBSD__) || defined (__DragonFly__) || defined (__APPLE__)
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26 #include <signal.h>
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27 #include "sigset.h"
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28
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29 int
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30 sigrelse(int sig)
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31 {
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32 sigset_t set, oset;
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33
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34 if (sig <= 0)
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35 return -1;
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36 sigemptyset(&set);
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37 sigaddset(&set, sig);
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38 return sigprocmask(SIG_UNBLOCK, &set, &oset);
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39 }
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40 #endif /* __FreeBSD__ || __dietlibc__ || __NetBSD__ || __OpenBSD__ ||
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41 __DragonFly__ || __APPLE__ */
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