1 /* $NetBSD: res_state.c,v 1.5 2004/06/09 18:07:03 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #if defined(LIBC_SCCS) && !defined(lint) 41 __RCSID("$NetBSD: res_state.c,v 1.5 2004/06/09 18:07:03 christos Exp $"); 42 #endif 43 44 #include <sys/types.h> 45 #include <arpa/inet.h> 46 #include <arpa/nameser.h> 47 #include <netdb.h> 48 #include <resolv.h> 49 50 struct __res_state _nres; 51 52 res_state __res_get_state_nothread(void); 53 void __res_put_state_nothread(res_state); 54 55 #ifdef __weak_alias 56 __weak_alias(__res_get_state, __res_get_state_nothread) 57 __weak_alias(__res_put_state, __res_put_state_nothread) 58 /* Source compatibility; only for single threaded programs */ 59 __weak_alias(__res_state, __res_get_state_nothread) 60 #endif 61 62 res_state 63 __res_get_state_nothread(void) 64 { 65 if ((_nres.options & RES_INIT) == 0 && res_ninit(&_nres) == -1) { 66 h_errno = NETDB_INTERNAL; 67 return NULL; 68 } 69 return &_nres; 70 } 71 72 void 73 /*ARGSUSED*/ 74 __res_put_state_nothread(res_state res) 75 { 76 } 77