/*

 * 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  	*/

/*

 *	Return pointer to the directory name, stripping off the last

 *	component of the path.

 *	Works similar to /bin/dirname

 */

#pragma weak dirname = _dirname

#include "synonyms.h"

#include <sys/types.h>

#include <string.h>

char *

dirname(char *s)

{

	char	*p;

	if (!s || !*s)			/* zero or empty argument */

		return (".");

	p = s + strlen(s);

	while (p != s && *--p == '/')	/* trim trailing /s */

		;

	if (p == s && *p == '/')

		return ("/");

	while (p != s)

		if (*--p == '/') {

			while (*p == '/' && p != s)

				p--;

			*++p = '\0';

			return (s);

		}

	return (".");

}