1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*
* Copyright (c) 1985, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)abort.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "namespace.h"
#include <signal.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <pthread.h>
#include "un-namespace.h"
#include "libc_private.h"
void
abort()
{
struct sigaction act;
/*
* POSIX requires we flush stdio buffers on abort.
* XXX ISO C requires that abort() be async-signal-safe.
*/
if (__cleanup)
(*__cleanup)();
sigfillset(&act.sa_mask);
/*
* Don't block SIGABRT to give any handler a chance; we ignore
* any errors -- ISO C doesn't allow abort to return anyway.
*/
sigdelset(&act.sa_mask, SIGABRT);
(void)__libc_sigprocmask(SIG_SETMASK, &act.sa_mask, NULL);
(void)raise(SIGABRT);
/*
* If SIGABRT was ignored, or caught and the handler returns, do
* it again, only harder.
*/
act.sa_handler = SIG_DFL;
act.sa_flags = 0;
sigfillset(&act.sa_mask);
(void)__libc_sigaction(SIGABRT, &act, NULL);
sigdelset(&act.sa_mask, SIGABRT);
(void)__libc_sigprocmask(SIG_SETMASK, &act.sa_mask, NULL);
(void)raise(SIGABRT);
exit(1);
}
|
