abort.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#include "synonyms.h"
#include "file64.h"
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include "stdiom.h"
static int pass = 0; /* counts how many times abort has been called */
/*
* abort() - terminate current process with dump via SIGABRT
*/
void
abort(void)
{
sigset_t set;
struct sigaction act;
if (!sigaction(SIGABRT, NULL, &act) &&
act.sa_handler != SIG_DFL && act.sa_handler != SIG_IGN) {
/*
* User handler is installed, invokes user handler before
* taking default action.
*
* Send SIGABRT, unblock SIGABRT if blocked.
* If there is pending signal SIGABRT, we only need to unblock
* SIGABRT.
*/
if (!sigprocmask(SIG_SETMASK, NULL, &set) &&
sigismember(&set, SIGABRT)) {
if (!sigpending(&set) && !sigismember(&set, SIGABRT))
(void) raise(SIGABRT);
(void) sigrelse(SIGABRT);
} else
(void) raise(SIGABRT);
}
if (++pass == 1)
__cleanup();
for (;;) {
(void) signal(SIGABRT, SIG_DFL);
(void) sigrelse(SIGABRT);
(void) raise(SIGABRT);
}
}