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 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include <sys/types.h> /* needed by stat.h */ 34 #include <sys/stat.h> /* stat */ 35 #include <stdio.h> /* NULL */ 36 #include <string.h> /* string functions */ 37 #include <stdlib.h> 38 39 /* 40 * if the ksh PWD environment variable matches the current 41 * working directory, don't call getwd() 42 */ 43 44 char * mygetwd(char * dir)45mygetwd(char *dir) 46 { 47 char *pwd; /* PWD environment variable value */ 48 struct stat d_sb; /* current directory status */ 49 struct stat tmp_sb; /* temporary stat buffer */ 50 char *getwd(); 51 52 /* get the current directory's status */ 53 if (stat(".", &d_sb) < 0) { 54 return (NULL); 55 } 56 /* use $PWD if it matches this directory */ 57 if ((pwd = getenv("PWD")) != NULL && *pwd != '\0' && 58 stat(pwd, &tmp_sb) == 0 && 59 d_sb.st_ino == tmp_sb.st_ino && d_sb.st_dev == tmp_sb.st_dev) { 60 (void) strcpy(dir, pwd); 61 return (pwd); 62 } 63 return (getwd(dir)); 64 } 65