1 /* $OpenBSD: abort.c,v 1.20 2015/10/25 04:13:59 guenther Exp $ */ 2 /* 3 * Copyright (c) 1985 Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <signal.h> 32 #include <stdlib.h> 33 #include <unistd.h> 34 #include "thread_private.h" 35 #include "atexit.h" 36 37 38 void 39 abort(void) 40 { 41 sigset_t mask; 42 struct sigaction sa; 43 44 sigfillset(&mask); 45 /* 46 * don't block SIGABRT to give any handler a chance; we ignore 47 * any errors -- X311J doesn't allow abort to return anyway. 48 */ 49 sigdelset(&mask, SIGABRT); 50 (void)sigprocmask(SIG_SETMASK, &mask, NULL); 51 52 (void)raise(SIGABRT); 53 54 /* 55 * if SIGABRT ignored, or caught and the handler returns, do 56 * it again, only harder. 57 */ 58 memset(&sa, 0, sizeof(sa)); 59 sa.sa_handler = SIG_DFL; 60 (void)sigaction(SIGABRT, &sa, NULL); 61 (void)sigprocmask(SIG_SETMASK, &mask, NULL); 62 (void)raise(SIGABRT); 63 _exit(1); 64 } 65 DEF_STRONG(abort); 66