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