1 /* 2 * Copyright (c) 1985 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #if defined(LIBC_SCCS) && !defined(lint) 31 static char *rcsid = "$OpenBSD: abort.c,v 1.13 2004/01/20 19:35:17 millert Exp $"; 32 #endif /* LIBC_SCCS and not lint */ 33 34 #include <signal.h> 35 #include <stdlib.h> 36 #include <unistd.h> 37 #include "thread_private.h" 38 #include "atexit.h" 39 40 void 41 abort(void) 42 { 43 struct atexit *p = __atexit; 44 static int cleanup_called = 0; 45 sigset_t mask; 46 47 48 sigfillset(&mask); 49 /* 50 * don't block SIGABRT to give any handler a chance; we ignore 51 * any errors -- X311J doesn't allow abort to return anyway. 52 */ 53 sigdelset(&mask, SIGABRT); 54 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 55 56 /* 57 * POSIX requires we flush stdio buffers on abort 58 */ 59 if (cleanup_called == 0) { 60 while (p != NULL && p->next != NULL) 61 p = p->next; 62 if (p != NULL && p->fns[0] != NULL) { 63 cleanup_called = 1; 64 (*p->fns[0])(); 65 } 66 } 67 68 (void)kill(getpid(), SIGABRT); 69 70 /* 71 * if SIGABRT ignored, or caught and the handler returns, do 72 * it again, only harder. 73 */ 74 (void)signal(SIGABRT, SIG_DFL); 75 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 76 (void)kill(getpid(), SIGABRT); 77 _exit(1); 78 } 79