1 /* $NetBSD: res_state.c,v 1.8 2009/01/11 02:46:29 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 __RCSID("$NetBSD: res_state.c,v 1.8 2009/01/11 02:46:29 christos Exp $"); 35 #endif 36 37 #include <sys/types.h> 38 #include <arpa/inet.h> 39 #include <arpa/nameser.h> 40 #include <netdb.h> 41 #include <resolv.h> 42 43 struct __res_state _nres 44 # if defined(__BIND_RES_TEXT) 45 = { .retrans = RES_TIMEOUT, } /*%< Motorola, et al. */ 46 # endif 47 ; 48 49 res_state __res_get_state_nothread(void); 50 void __res_put_state_nothread(res_state); 51 52 #ifdef __weak_alias 53 __weak_alias(__res_get_state, __res_get_state_nothread) 54 __weak_alias(__res_put_state, __res_put_state_nothread) 55 /* Source compatibility; only for single threaded programs */ 56 __weak_alias(__res_state, __res_get_state_nothread) 57 #endif 58 59 res_state 60 __res_get_state_nothread(void) 61 { 62 if ((_nres.options & RES_INIT) == 0 && res_ninit(&_nres) == -1) { 63 h_errno = NETDB_INTERNAL; 64 return NULL; 65 } 66 return &_nres; 67 } 68 69 void 70 /*ARGSUSED*/ 71 __res_put_state_nothread(res_state res) 72 { 73 } 74