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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 /* 34 * Return pointer to the directory name, stripping off the last 35 * component of the path. 36 * Works similar to /bin/dirname 37 */ 38 39 #pragma weak dirname = _dirname 40 #include "synonyms.h" 41 #include <sys/types.h> 42 #include <string.h> 43 44 char * 45 dirname(char *s) 46 { 47 char *p; 48 49 if (!s || !*s) /* zero or empty argument */ 50 return ("."); 51 52 p = s + strlen(s); 53 while (p != s && *--p == '/') /* trim trailing /s */ 54 ; 55 56 if (p == s && *p == '/') 57 return ("/"); 58 59 while (p != s) 60 if (*--p == '/') { 61 while (*p == '/' && p != s) 62 p--; 63 *++p = '\0'; 64 return (s); 65 } 66 67 return ("."); 68 } 69