1 /* $OpenBSD: abort.c,v 1.14 2005/08/08 08:05:36 espie 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 void 38 abort(void) 39 { 40 struct atexit *p = __atexit; 41 static int cleanup_called = 0; 42 sigset_t mask; 43 44 45 sigfillset(&mask); 46 /* 47 * don't block SIGABRT to give any handler a chance; we ignore 48 * any errors -- X311J doesn't allow abort to return anyway. 49 */ 50 sigdelset(&mask, SIGABRT); 51 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 52 53 /* 54 * POSIX requires we flush stdio buffers on abort 55 */ 56 if (cleanup_called == 0) { 57 while (p != NULL && p->next != NULL) 58 p = p->next; 59 if (p != NULL && p->fns[0] != NULL) { 60 cleanup_called = 1; 61 (*p->fns[0])(); 62 } 63 } 64 65 (void)kill(getpid(), SIGABRT); 66 67 /* 68 * if SIGABRT ignored, or caught and the handler returns, do 69 * it again, only harder. 70 */ 71 (void)signal(SIGABRT, SIG_DFL); 72 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 73 (void)kill(getpid(), SIGABRT); 74 _exit(1); 75 } 76