xref: /illumos-gate/usr/src/lib/libfsmgt/common/sys_info.c (revision e7cbe64f7a72dae5cb44f100db60ca88f3313c65)
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 2003 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 <netdb.h>
30 #include <unistd.h>
31 #include <errno.h>
32 #include <strings.h>
33 #include "libfsmgt.h"
34 
35 /*
36  * Public methods
37  */
38 
39 char *sys_get_hostname(int *errp) {
40 
41 	char	host[MAXHOSTNAMELEN + 1];
42 	char	*ret_val;
43 
44 	*errp = 0;
45 	if (gethostname(host, sizeof (host)) == -1) {
46 		*errp = errno;
47 		return (NULL);
48 	}
49 
50 	ret_val = strdup(host);
51 	if (ret_val == NULL) {
52 		*errp = errno;
53 		return (NULL);
54 	}
55 
56 	/*
57 	 * Note: The space allocated for the return value must be freed by the
58 	 * caller using free().
59 	 */
60 	return (ret_val);
61 } /* sys_get_hostname */
62