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
40int
41yp_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;
55out:
56	_THREAD_PRIVATE_MUTEX_UNLOCK(yp_get_default_domain);
57	return r;
58}
59DEF_WEAK(yp_get_default_domain);
60