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 /* Copyright (c) 1988 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright (c) 1999 by Sun Microsystems, Inc. 28 * All rights reserved. 29 */ 30 31 #include <sys/types.h> /* needed by stat.h */ 32 #include <sys/stat.h> /* stat */ 33 #include <stdio.h> /* NULL */ 34 #include <string.h> /* string functions */ 35 #include <stdlib.h> 36 37 /* 38 * if the ksh PWD environment variable matches the current 39 * working directory, don't call getwd() 40 */ 41 42 char * 43 mygetwd(char *dir) 44 { 45 char *pwd; /* PWD environment variable value */ 46 struct stat d_sb; /* current directory status */ 47 struct stat tmp_sb; /* temporary stat buffer */ 48 char *getwd(); 49 50 /* get the current directory's status */ 51 if (stat(".", &d_sb) < 0) { 52 return (NULL); 53 } 54 /* use $PWD if it matches this directory */ 55 if ((pwd = getenv("PWD")) != NULL && *pwd != '\0' && 56 stat(pwd, &tmp_sb) == 0 && 57 d_sb.st_ino == tmp_sb.st_ino && d_sb.st_dev == tmp_sb.st_dev) { 58 (void) strcpy(dir, pwd); 59 return (pwd); 60 } 61 return (getwd(dir)); 62 } 63