1 /* $NetBSD: res_compat.c,v 1.3 2009/11/22 18:04:37 mbalmer 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_compat.c,v 1.3 2009/11/22 18:04:37 mbalmer 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 <string.h> 42 #define __OLD_RES_STATE 43 #include <resolv.h> 44 45 #undef _res 46 47 /* 48 * Binary Compatibility; this symbol does not appear in a header file 49 * Most userland programs use this to set res_options before res_init() 50 * is called. There are hooks to res_init() to consult the data in this 51 * structure. The hooks are provided indirectly by the two functions below. 52 * We depend on the fact the first 440 [32 bit machines] bytes are 53 * shared between the two structures. 54 */ 55 #ifndef __BIND_NOSTATIC 56 struct __res_state _res 57 #if defined(__BIND_RES_TEXT) 58 = { RES_TIMEOUT, } /* Motorola, et al. */ 59 # endif 60 ; 61 62 void *__res_get_old_state(void); 63 void __res_put_old_state(void *); 64 65 void * 66 __res_get_old_state(void) 67 { 68 return &_res; 69 } 70 71 void 72 __res_put_old_state(void *res) 73 { 74 (void)memcpy(&_res, res, sizeof(_res)); 75 } 76 #endif 77