69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
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* Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "includes.h"
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "openbsd-compat/bsd-signal.h"
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#undef signal
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mysig_t
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mysignal(int sig, mysig_t act)
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{
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#ifdef HAVE_SIGACTION
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struct sigaction sa, osa;
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if (sigaction(sig, NULL, &osa) == -1)
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return (mysig_t) -1;
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if (osa.sa_handler != act) {
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memset(&sa, 0, sizeof(sa));
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0;
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if (sig == SIGALRM) {
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#ifdef SA_INTERRUPT
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sa.sa_flags |= SA_INTERRUPT;
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#endif
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} else {
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#ifdef SA_RESTART
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sa.sa_flags |= SA_RESTART;
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#endif
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}
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sa.sa_handler = act;
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if (sigaction(sig, &sa, NULL) == -1)
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return (mysig_t) -1;
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}
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return (osa.sa_handler);
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#else
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return (signal(sig, act));
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#endif
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}
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#if !defined(HAVE_STRSIGNAL)
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char *strsignal(int sig)
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{
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static char buf[16];
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(void)snprintf(buf, sizeof(buf), "%d", sig);
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return buf;
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}
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#endif
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