10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
30*6812Sraf #pragma ident "%Z%%M% %I% %E% SMI"
310Sstevel@tonic-gate
320Sstevel@tonic-gate /*
330Sstevel@tonic-gate * Return pointer to the directory name, stripping off the last
340Sstevel@tonic-gate * component of the path.
350Sstevel@tonic-gate * Works similar to /bin/dirname
360Sstevel@tonic-gate */
370Sstevel@tonic-gate
38*6812Sraf #pragma weak _dirname = dirname
39*6812Sraf
40*6812Sraf #include "lint.h"
410Sstevel@tonic-gate #include <sys/types.h>
420Sstevel@tonic-gate #include <string.h>
430Sstevel@tonic-gate
440Sstevel@tonic-gate char *
dirname(char * s)450Sstevel@tonic-gate dirname(char *s)
460Sstevel@tonic-gate {
470Sstevel@tonic-gate char *p;
480Sstevel@tonic-gate
490Sstevel@tonic-gate if (!s || !*s) /* zero or empty argument */
500Sstevel@tonic-gate return (".");
510Sstevel@tonic-gate
520Sstevel@tonic-gate p = s + strlen(s);
530Sstevel@tonic-gate while (p != s && *--p == '/') /* trim trailing /s */
540Sstevel@tonic-gate ;
550Sstevel@tonic-gate
560Sstevel@tonic-gate if (p == s && *p == '/')
570Sstevel@tonic-gate return ("/");
580Sstevel@tonic-gate
590Sstevel@tonic-gate while (p != s)
600Sstevel@tonic-gate if (*--p == '/') {
610Sstevel@tonic-gate while (*p == '/' && p != s)
620Sstevel@tonic-gate p--;
630Sstevel@tonic-gate *++p = '\0';
640Sstevel@tonic-gate return (s);
650Sstevel@tonic-gate }
660Sstevel@tonic-gate
670Sstevel@tonic-gate return (".");
680Sstevel@tonic-gate }
69