xref: /titanic_50/usr/src/lib/libc/port/gen/getwd.c (revision c10c16dec587a0662068f6e2991c29ed3a9db943)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include "lint.h"
30 #include <sys/types.h>
31 #include <sys/param.h>
32 #include <errno.h>
33 #include <unistd.h>
34 #include <string.h>
35 #include <stdlib.h>
36 #include <limits.h>
37 
38 char *
39 getwd(char *pathname)
40 {
41 	char *c;
42 	long val;
43 
44 
45 	if ((val = pathconf(".", _PC_PATH_MAX)) == -1)
46 		val = MAXPATHLEN + 1;
47 
48 	if ((c = getcwd(pathname, val)) == NULL) {
49 		if (errno == EACCES)
50 			(void) strcpy(pathname,
51 			    "getwd: a parent directory cannot be read");
52 		else if (errno == ERANGE)
53 			(void) strcpy(pathname, "getwd: buffer too small");
54 		else
55 			(void) strcpy(pathname, "getwd: failure occurred");
56 		return (0);
57 	}
58 
59 	return (c);
60 }
61