abort.c revision 35501 
1/*
2 * Copyright (c) 1985, 1993
3 *	The Regents of the University of California.  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)
35static char sccsid[] = "@(#)abort.c	8.1 (Berkeley) 6/4/93";
36#endif /* LIBC_SCCS and not lint */
37
38#include <signal.h>
39#include <stdlib.h>
40#include <stddef.h>
41#include <unistd.h>
42#ifdef _THREAD_SAFE
43#include <pthread.h>
44#include "pthread_private.h"
45#endif
46
47void (*__cleanup)();
48
49void
50abort()
51{
52	sigset_t mask;
53
54	/*
55	 * POSIX requires we flush stdio buffers on abort
56	 */
57	if (__cleanup)
58		(*__cleanup)();
59
60	sigfillset(&mask);
61	/*
62	 * don't block SIGABRT to give any handler a chance; we ignore
63	 * any errors -- X311J doesn't allow abort to return anyway.
64	 */
65	sigdelset(&mask, SIGABRT);
66#ifdef _THREAD_SAFE
67	(void) _thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
68#else
69	(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
70#endif
71	(void)kill(getpid(), SIGABRT);
72
73	/*
74	 * if SIGABRT ignored, or caught and the handler returns, do
75	 * it again, only harder.
76	 */
77	(void)signal(SIGABRT, SIG_DFL);
78#ifdef _THREAD_SAFE
79	(void) _thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
80#else
81	(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
82#endif
83	(void)kill(getpid(), SIGABRT);
84	exit(1);
85}
86