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/* $OpenBSD: abort.c,v 1.21 2017/08/12 22:59:52 guenther Exp $ */ |
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/* |
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* Copyright (c) 1985 Regents of the University of California. |
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* 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 the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <signal.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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void |
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abort(void) |
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{ |
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sigset_t mask; |
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struct sigaction sa; |
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sigfillset(&mask); |
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/* |
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* don't block SIGABRT to give any handler a chance; we ignore |
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* any errors -- X311J doesn't allow abort to return anyway. |
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*/ |
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sigdelset(&mask, SIGABRT); |
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(void)sigprocmask(SIG_SETMASK, &mask, NULL); |
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(void)raise(SIGABRT); |
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/* |
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* if SIGABRT ignored, or caught and the handler returns, do |
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* it again, only harder. |
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*/ |
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memset(&sa, 0, sizeof(sa)); |
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sa.sa_handler = SIG_DFL; |
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(void)sigaction(SIGABRT, &sa, NULL); |
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(void)sigprocmask(SIG_SETMASK, &mask, NULL); |
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(void)raise(SIGABRT); |
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_exit(1); |
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} |
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DEF_STRONG(abort); |