Annotation of src/lib/libc/resolv/res_compat.c, Revision 1.2
1.2 ! martin 1: /* $NetBSD: res_compat.c,v 1.1 2004/06/09 18:07:03 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)
1.2 ! martin 34: __RCSID("$NetBSD: res_compat.c,v 1.1 2004/06/09 18:07:03 christos Exp $");
1.1 christos 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 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
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