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Annotation of src/lib/libc/resolv/res_state.c, Revision 1.7

1.7     ! martin      1: /*     $NetBSD: res_state.c,v 1.6 2007/01/27 22:26:44 christos Exp $   */
1.1       christos    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)
1.7     ! martin     34: __RCSID("$NetBSD: res_state.c,v 1.6 2007/01/27 22:26:44 christos Exp $");
1.1       christos   35: #endif
                     36:
                     37: #include <sys/types.h>
                     38: #include <arpa/inet.h>
                     39: #include <arpa/nameser.h>
1.4       christos   40: #include <netdb.h>
1.1       christos   41: #include <resolv.h>
                     42:
1.6       christos   43: struct __res_state _nres
                     44: # if defined(__BIND_RES_TEXT)
                     45:        = { .retrans = RES_TIMEOUT, }   /*%< Motorola, et al. */
                     46: # endif
                     47:        ;
1.1       christos   48:
                     49: res_state __res_get_state_nothread(void);
                     50: void __res_put_state_nothread(res_state);
                     51:
1.2       christos   52: #ifdef __weak_alias
1.1       christos   53: __weak_alias(__res_get_state, __res_get_state_nothread)
                     54: __weak_alias(__res_put_state, __res_put_state_nothread)
1.3       christos   55: /* Source compatibility; only for single threaded programs */
                     56: __weak_alias(__res_state, __res_get_state_nothread)
1.2       christos   57: #endif
1.1       christos   58:
                     59: res_state
                     60: __res_get_state_nothread(void)
                     61: {
1.5       christos   62:        if ((_nres.options & RES_INIT) == 0 && res_ninit(&_nres) == -1) {
1.4       christos   63:                h_errno = NETDB_INTERNAL;
                     64:                return NULL;
                     65:        }
1.5       christos   66:        return &_nres;
1.1       christos   67: }
                     68:
                     69: void
                     70: /*ARGSUSED*/
                     71: __res_put_state_nothread(res_state res)
                     72: {
                     73: }