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 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 /* 30 * Portions of this source code were derived from Berkeley 31 * 4.3 BSD under license from the Regents of the University of 32 * California. 33 */ 34 35 #pragma ident "%Z%%M% %I% %E% SMI" 36 37 /* 38 * rpcdname.c 39 * Gets the default domain name 40 */ 41 #include "mt.h" 42 #include "rpc_mt.h" 43 #include <sys/types.h> 44 #include <sys/time.h> 45 #include <string.h> 46 #include <syslog.h> 47 48 extern int getdomainname(); 49 extern char *strdup(); 50 static char *default_domain = 0; 51 52 static char * 53 get_default_domain(void) 54 { 55 char temp[256]; 56 extern mutex_t dname_lock; 57 58 /* VARIABLES PROTECTED BY dname_lock: default_domain */ 59 60 (void) mutex_lock(&dname_lock); 61 if (default_domain) { 62 (void) mutex_unlock(&dname_lock); 63 return (default_domain); 64 } 65 if (getdomainname(temp, (size_t)sizeof (temp)) < 0) { 66 (void) mutex_unlock(&dname_lock); 67 return (0); 68 } 69 if ((int)strlen(temp) > 0) { 70 default_domain = strdup(temp); 71 if (default_domain == NULL) { 72 syslog(LOG_ERR, "get_default_domain : strdup failed."); 73 (void) mutex_unlock(&dname_lock); 74 return (0); 75 } 76 } 77 (void) mutex_unlock(&dname_lock); 78 return (default_domain); 79 } 80 81 /* 82 * This is a wrapper for the system call getdomainname which returns a 83 * ypclnt.h error code in the failure case. It also checks to see that 84 * the domain name is non-null, knowing that the null string is going to 85 * get rejected elsewhere in the yp client package. 86 */ 87 int 88 __rpc_get_default_domain(char **domain) 89 { 90 if ((*domain = get_default_domain()) != 0) 91 return (0); 92 return (-1); 93 } 94