/*
 * 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 <sys/types.h>
#include <unistd.h>
#include <wait.h>

pid_t
_waitpid(pid_t pid, int *stat_loc, int options)
{
	idtype_t idtype;
	id_t id;
	siginfo_t info;
	int error;

	if (pid > 0) {
		idtype = P_PID;
		id = pid;
	} else if (pid < -1) {
		idtype = P_PGID;
		id = -pid;
	} else if (pid == -1) {
		idtype = P_ALL;
		id = 0;
	} else {
		idtype = P_PGID;
		id = getpgid(0);
	}

	options |= (WEXITED|WTRAPPED);

	if ((error = waitid(idtype, id, &info, options)) < 0)
		return (error);

	if (stat_loc) {

		int stat = (info.si_status & 0377);

		switch (info.si_code) {
		case CLD_EXITED:
			stat <<= 8;
			break;
		case CLD_DUMPED:
			stat |= WCOREFLG;
			break;
		case CLD_KILLED:
			break;
		case CLD_TRAPPED:
		case CLD_STOPPED:
			stat <<= 8;
			stat |= WSTOPFLG;
			break;
		case CLD_CONTINUED:
			stat = WCONTFLG;
			break;
		}

		*stat_loc = stat;
	}

	return (info.si_pid);
}

pid_t
_wait(int *stat_loc)
{
	return (waitpid(-1, stat_loc, 0));
}