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 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 26 /* All Rights Reserved */ 27 /* 28 * Portions of this source code were derived from Berkeley 29 * 4.3 BSD under license from the Regents of the University of 30 * California. 31 */ 32 33 #pragma ident "%Z%%M% %I% %E% SMI" 34 35 /* 36 * rpcdname.c 37 * Gets the default domain name 38 */ 39 #include "mt.h" 40 #include "rpc_mt.h" 41 #include <sys/types.h> 42 #include <sys/time.h> 43 #include <rpc/trace.h> 44 #include <string.h> 45 #include <syslog.h> 46 47 extern int getdomainname(); 48 extern char *strdup(); 49 static char *default_domain = 0; 50 51 static char * 52 get_default_domain() 53 { 54 char temp[256]; 55 extern mutex_t dname_lock; 56 57 /* VARIABLES PROTECTED BY dname_lock: default_domain */ 58 59 trace1(TR_get_default_domain, 0); 60 mutex_lock(&dname_lock); 61 if (default_domain) { 62 mutex_unlock(&dname_lock); 63 trace1(TR_get_default_domain, 1); 64 return (default_domain); 65 } 66 if (getdomainname(temp, (size_t)sizeof (temp)) < 0) { 67 mutex_unlock(&dname_lock); 68 trace1(TR_get_default_domain, 1); 69 return (0); 70 } 71 if ((int)strlen(temp) > 0) { 72 default_domain = strdup(temp); 73 if (default_domain == NULL) { 74 syslog(LOG_ERR, "get_default_domain : strdup failed."); 75 mutex_unlock(&dname_lock); 76 trace1(TR_get_default_domain, 1); 77 return (0); 78 } 79 } 80 mutex_unlock(&dname_lock); 81 trace1(TR_get_default_domain, 1); 82 return (default_domain); 83 } 84 85 /* 86 * This is a wrapper for the system call getdomainname which returns a 87 * ypclnt.h error code in the failure case. It also checks to see that 88 * the domain name is non-null, knowing that the null string is going to 89 * get rejected elsewhere in the yp client package. 90 */ 91 int 92 __rpc_get_default_domain(domain) 93 char **domain; 94 { 95 trace1(TR___rpc_get_default_domain, 0); 96 if ((*domain = get_default_domain()) != 0) { 97 trace1(TR___rpc_get_default_domain, 1); 98 return (0); 99 } 100 trace1(TR___rpc_get_default_domain, 1); 101 return (-1); 102 } 103