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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char *rcsid = "$OpenBSD: abort.c,v 1.7 2001/08/12 12:03:01 heko Exp $"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <signal.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 #include "thread_private.h" 42 43 void (*__cleanup)(); 44 45 void 46 abort() 47 { 48 static int cleanup_called = 0; 49 sigset_t mask; 50 51 52 sigfillset(&mask); 53 /* 54 * don't block SIGABRT to give any handler a chance; we ignore 55 * any errors -- X311J doesn't allow abort to return anyway. 56 */ 57 sigdelset(&mask, SIGABRT); 58 #ifdef _THREAD_SAFE 59 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 60 #else /* _THREAD_SAFE */ 61 (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 62 #endif /* _THREAD_SAFE */ 63 64 /* 65 * POSIX requires we flush stdio buffers on abort 66 */ 67 if (cleanup_called == 0 && __cleanup != NULL) { 68 cleanup_called = 1; 69 (*__cleanup)(); 70 } 71 72 (void)kill(getpid(), SIGABRT); 73 74 /* 75 * if SIGABRT ignored, or caught and the handler returns, do 76 * it again, only harder. 77 */ 78 (void)signal(SIGABRT, SIG_DFL); 79 #ifdef _THREAD_SAFE 80 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 81 #else /* _THREAD_SAFE */ 82 (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 83 #endif /* _THREAD_SAFE */ 84 (void)kill(getpid(), SIGABRT); 85 exit(1); 86 } 87