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 #define _LIBC_IN_ABORT
35 #include "thread_private.h"
36 #include "atexit.h"
37
38 void
abort(void)39 abort(void)
40 {
41 struct atexit *p = __atexit;
42 static int cleanup_called = 0;
43 sigset_t mask;
44
45
46 sigfillset(&mask);
47 /*
48 * don't block SIGABRT to give any handler a chance; we ignore
49 * any errors -- X311J doesn't allow abort to return anyway.
50 */
51 sigdelset(&mask, SIGABRT);
52 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
53
54 /*
55 * POSIX requires we flush stdio buffers on abort
56 */
57 if (cleanup_called == 0) {
58 while (p != NULL && p->next != NULL)
59 p = p->next;
60 if (p != NULL && p->fns[0] != NULL) {
61 cleanup_called = 1;
62 (*p->fns[0])();
63 }
64 }
65
66 (void)kill(getpid(), SIGABRT);
67
68 /*
69 * if SIGABRT ignored, or caught and the handler returns, do
70 * it again, only harder.
71 */
72 (void)signal(SIGABRT, SIG_DFL);
73 (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
74 (void)kill(getpid(), SIGABRT);
75 _exit(1);
76 }
77