/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (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 2008 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

/*	Copyright (c) 1988 AT&T	*/

/*	  All Rights Reserved  	*/

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include "lint.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);

	}

}