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res_state.c revision 1.6.10.1
      1  1.6.10.1      yamt /*	$NetBSD: res_state.c,v 1.6.10.1 2008/05/18 12:30:18 yamt Exp $	*/
      2       1.1  christos 
      3       1.1  christos /*-
      4       1.1  christos  * Copyright (c) 2004 The NetBSD Foundation, Inc.
      5       1.1  christos  * All rights reserved.
      6       1.1  christos  *
      7       1.1  christos  * This code is derived from software contributed to The NetBSD Foundation
      8       1.1  christos  * by Christos Zoulas.
      9       1.1  christos  *
     10       1.1  christos  * Redistribution and use in source and binary forms, with or without
     11       1.1  christos  * modification, are permitted provided that the following conditions
     12       1.1  christos  * are met:
     13       1.1  christos  * 1. Redistributions of source code must retain the above copyright
     14       1.1  christos  *    notice, this list of conditions and the following disclaimer.
     15       1.1  christos  * 2. Redistributions in binary form must reproduce the above copyright
     16       1.1  christos  *    notice, this list of conditions and the following disclaimer in the
     17       1.1  christos  *    documentation and/or other materials provided with the distribution.
     18       1.1  christos  *
     19       1.1  christos  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20       1.1  christos  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21       1.1  christos  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22       1.1  christos  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23       1.1  christos  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24       1.1  christos  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25       1.1  christos  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26       1.1  christos  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27       1.1  christos  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28       1.1  christos  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29       1.1  christos  * POSSIBILITY OF SUCH DAMAGE.
     30       1.1  christos  */
     31       1.1  christos 
     32       1.1  christos #include <sys/cdefs.h>
     33       1.1  christos #if defined(LIBC_SCCS) && !defined(lint)
     34  1.6.10.1      yamt __RCSID("$NetBSD: res_state.c,v 1.6.10.1 2008/05/18 12:30:18 yamt Exp $");
     35       1.1  christos #endif
     36       1.1  christos 
     37       1.1  christos #include <sys/types.h>
     38       1.1  christos #include <arpa/inet.h>
     39       1.1  christos #include <arpa/nameser.h>
     40       1.4  christos #include <netdb.h>
     41       1.1  christos #include <resolv.h>
     42       1.1  christos 
     43       1.6  christos struct __res_state _nres
     44       1.6  christos # if defined(__BIND_RES_TEXT)
     45       1.6  christos 	= { .retrans = RES_TIMEOUT, }	/*%< Motorola, et al. */
     46       1.6  christos # endif
     47       1.6  christos 	;
     48       1.1  christos 
     49       1.1  christos res_state __res_get_state_nothread(void);
     50       1.1  christos void __res_put_state_nothread(res_state);
     51       1.1  christos 
     52       1.2  christos #ifdef __weak_alias
     53       1.1  christos __weak_alias(__res_get_state, __res_get_state_nothread)
     54       1.1  christos __weak_alias(__res_put_state, __res_put_state_nothread)
     55       1.3  christos /* Source compatibility; only for single threaded programs */
     56       1.3  christos __weak_alias(__res_state, __res_get_state_nothread)
     57       1.2  christos #endif
     58       1.1  christos 
     59       1.1  christos res_state
     60       1.1  christos __res_get_state_nothread(void)
     61       1.1  christos {
     62       1.5  christos 	if ((_nres.options & RES_INIT) == 0 && res_ninit(&_nres) == -1) {
     63       1.4  christos 		h_errno = NETDB_INTERNAL;
     64       1.4  christos 		return NULL;
     65       1.4  christos 	}
     66       1.5  christos 	return &_nres;
     67       1.1  christos }
     68       1.1  christos 
     69       1.1  christos void
     70       1.1  christos /*ARGSUSED*/
     71       1.1  christos __res_put_state_nothread(res_state res)
     72       1.1  christos {
     73       1.1  christos }
     74