getdname.c revision 1219:f89f56c2d9ac 
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/*
24 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
25 * Use is subject to license terms.
26 */
27
28/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
29/* All Rights Reserved */
30/*
31 * Portions of this source code were derived from Berkeley
32 * 4.3 BSD under license from the Regents of the University of
33 * California.
34 */
35
36#pragma ident	"%Z%%M%	%I%	%E% SMI"
37
38/*
39 * Gets and sets the domain name of the system
40 */
41
42#include "mt.h"
43#include "rpc_mt.h"
44#include <stdio.h>
45#include <stdlib.h>
46#include <sys/types.h>
47#include <sys/utsname.h>
48#include <sys/systeminfo.h>
49#include <sys/time.h>
50#include <syslog.h>
51
52#ifndef SI_SRPC_DOMAIN
53#define	use_file
54#endif
55
56#ifdef use_file
57char DOMAIN[] = "/etc/domain";
58#endif
59
60int setdomainname();
61
62#ifdef use_file
63static char *domainname;
64#endif
65
66extern mutex_t	dname_lock;
67
68int
69getdomainname(name, namelen)
70	char *name;
71	int namelen;
72{
73#ifdef use_file
74	FILE *domain_fd;
75	char *line;
76
77	(void) mutex_lock(&dname_lock);
78	if (domainname) {
79		(void) strncpy(name, domainname, namelen);
80		(void) mutex_unlock(&dname_lock);
81		return (0);
82	}
83
84	domainname = calloc(1, 256);
85	if (domainname == NULL) {
86		syslog(LOG_ERR, "getdomainname : out of memory.");
87		(void) mutex_unlock(&dname_lock);
88		return (-1);
89	}
90
91	if ((domain_fd = fopen(DOMAIN, "r")) == NULL) {
92
93		(void) mutex_unlock(&dname_lock);
94		return (-1);
95	}
96	if (fscanf(domain_fd, "%s", domainname) == NULL) {
97		(void) fclose(domain_fd);
98		(void) mutex_unlock(&dname_lock);
99		return (-1);
100	}
101	(void) fclose(domain_fd);
102	(void) strncpy(name, domainname, namelen);
103	(void) mutex_unlock(&dname_lock);
104	return (0);
105#else
106	int sysinfostatus;
107
108	sysinfostatus = sysinfo(SI_SRPC_DOMAIN, name, namelen);
109
110	return ((sysinfostatus < 0) ? -1 : 0);
111#endif
112}
113
114int
115setdomainname(domain, len)
116	char *domain;
117	int len;
118{
119#ifdef use_file
120
121	FILE *domain_fd;
122
123	(void) mutex_lock(&dname_lock);
124	if (domainname)
125		free(domainname);
126
127	if ((domain_fd = fopen(DOMAIN, "w")) == NULL) {
128		(void) mutex_unlock(&dname_lock);
129		return (-1);
130	}
131	if (fputs(domain, domain_fd) == NULL) {
132		(void) mutex_unlock(&dname_lock);
133		return (-1);
134	}
135	(void) fclose(domain_fd);
136	domainname = calloc(1, 256);
137	if (domainname == NULL) {
138		syslog(LOG_ERR, "setdomainname : out of memory.");
139		(void) mutex_unlock(&dname_lock);
140		return (-1);
141	}
142	(void) strncpy(domainname, domain, len);
143	(void) mutex_unlock(&dname_lock);
144	return (0);
145#else
146	int sysinfostatus;
147
148	sysinfostatus = sysinfo(SI_SET_SRPC_DOMAIN,
149				domain, len + 1); /* add null */
150	return ((sysinfostatus < 0) ? -1 : 0);
151#endif
152}
153