1 /* $OpenBSD: yp_get_default_domain.c,v 1.10 2022/08/02 16:59:30 deraadt Exp $ */
2 /*
3 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/types.h>
29 #include <unistd.h>
30 #include <limits.h>
31 #include <rpc/rpc.h>
32 #include <rpc/xdr.h>
33 #include <rpcsvc/yp.h>
34 #include <rpcsvc/ypclnt.h>
35 #include "ypinternal.h"
36 #include "thread_private.h"
37
38 _THREAD_PRIVATE_KEY(yp_get_default_domain);
39
40 int
yp_get_default_domain(char ** domp)41 yp_get_default_domain(char **domp)
42 {
43 int r = 0;
44
45 _THREAD_PRIVATE_MUTEX_LOCK(yp_get_default_domain);
46 *domp = NULL;
47 if (_yp_domain[0] == '\0') {
48 if (getdomainname(_yp_domain, sizeof _yp_domain) ||
49 _yp_domain[0] == '\0') {
50 r = YPERR_NODOM;
51 goto out;
52 }
53 }
54 *domp = _yp_domain;
55 out:
56 _THREAD_PRIVATE_MUTEX_UNLOCK(yp_get_default_domain);
57 return r;
58 }
59 DEF_WEAK(yp_get_default_domain);
60