1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #include "lint.h"
31 #include "file64.h"
32 #include <signal.h>
33 #include <stdlib.h>
34 #include <unistd.h>
35 #include <stdio.h>
36 #include "stdiom.h"
37
38 static int pass = 0; /* counts how many times abort has been called */
39
40 /*
41 * abort() - terminate current process with dump via SIGABRT
42 */
43 void
abort(void)44 abort(void)
45 {
46 sigset_t set;
47 struct sigaction act;
48
49 if (!sigaction(SIGABRT, NULL, &act) &&
50 act.sa_handler != SIG_DFL && act.sa_handler != SIG_IGN) {
51 /*
52 * User handler is installed, invokes user handler before
53 * taking default action.
54 *
55 * Send SIGABRT, unblock SIGABRT if blocked.
56 * If there is pending signal SIGABRT, we only need to unblock
57 * SIGABRT.
58 */
59 if (!sigprocmask(SIG_SETMASK, NULL, &set) &&
60 sigismember(&set, SIGABRT)) {
61 if (!sigpending(&set) && !sigismember(&set, SIGABRT))
62 (void) raise(SIGABRT);
63 (void) sigrelse(SIGABRT);
64 } else
65 (void) raise(SIGABRT);
66 }
67
68 if (++pass == 1)
69 __cleanup();
70
71 for (;;) {
72 (void) signal(SIGABRT, SIG_DFL);
73 (void) sigrelse(SIGABRT);
74 (void) raise(SIGABRT);
75 }
76 }
77