1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * Return pointer to the last element of a pathname.
32 */
33
34 #pragma weak _basename = basename
35
36 #include "lint.h"
37 #include <libgen.h>
38 #include <string.h>
39 #include <sys/types.h>
40
41 char *
basename(char * s)42 basename(char *s)
43 {
44 char *p;
45
46 if (!s || !*s) /* zero or empty argument */
47 return (".");
48
49 p = s + strlen(s);
50 while (p != s && *--p == '/') /* skip trailing /s */
51 *p = '\0';
52
53 if (p == s && *p == '\0') /* all slashes */
54 return ("/");
55
56 while (p != s)
57 if (*--p == '/')
58 return (++p);
59
60 return (p);
61 }
62