77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
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/* $NetBSD: res_compat.c,v 1.3 2009/11/22 18:04:37 mbalmer Exp $ */
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/*-
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* Copyright (c) 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: res_compat.c,v 1.3 2009/11/22 18:04:37 mbalmer Exp $");
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#endif
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#include <sys/types.h>
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#include <arpa/inet.h>
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#include <arpa/nameser.h>
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#include <netdb.h>
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#include <string.h>
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#define __OLD_RES_STATE
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#include <resolv.h>
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#undef _res
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/*
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* Binary Compatibility; this symbol does not appear in a header file
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* Most userland programs use this to set res_options before res_init()
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* is called. There are hooks to res_init() to consult the data in this
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* structure. The hooks are provided indirectly by the two functions below.
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* We depend on the fact the first 440 [32 bit machines] bytes are
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* shared between the two structures.
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*/
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#ifndef __BIND_NOSTATIC
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struct __res_state _res
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#if defined(__BIND_RES_TEXT)
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= { RES_TIMEOUT, } /* Motorola, et al. */
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# endif
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;
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void *__res_get_old_state(void);
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void __res_put_old_state(void *);
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void *
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__res_get_old_state(void)
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{
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return &_res;
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}
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void
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__res_put_old_state(void *res)
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{
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(void)memcpy(&_res, res, sizeof(_res));
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}
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#endif
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