xref: /illumos-gate/usr/src/ucblib/libucb/port/gen/getwd.c (revision afab0816ecb604f0099a09ad8ee398f0d7b77b1c)
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 (c) 1995-1997, by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*LINTLIBRARY*/
30 
31 #include <sys/types.h>
32 #include <sys/param.h>
33 #include <errno.h>
34 #include <unistd.h>
35 #include <string.h>
36 #include <stdlib.h>
37 
38 char *
39 getwd(char *pathname)
40 {
41 	char *c;
42 	long val;
43 
44 	if ((val = pathconf(".", _PC_PATH_MAX)) == -1L)
45 		val = MAXPATHLEN + 1;
46 
47 	if ((c = getcwd(pathname, val)) == NULL) {
48 		if (errno == EACCES)
49 			(void) strcpy(pathname,
50 				"getwd: a parent directory cannot be read");
51 		else if (errno == ERANGE)
52 			(void) strcpy(pathname, "getwd: buffer too small");
53 		else
54 			(void) strcpy(pathname, "getwd: failure occurred");
55 		return (0);
56 	}
57 
58 	return (c);
59 }
60