resolv.h revision 11f3d5a4319e6e37e5280cf187b3d173e1ac0adb 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28#ifndef _RESOLV_H_
29#define _RESOLV_H_
30
31#include <sys/param.h>
32#include <sys/types.h>
33#include <sys/cdefs.h>
34#include <sys/socket.h>
35#include <stdio.h>
36#include <arpa/nameser.h>
37#include <netinet/in.h>
38
39__BEGIN_DECLS
40
41struct res_state;
42
43extern struct __res_state *__res_state(void);
44#define _res (*__res_state())
45
46/* Base-64 functions - because some code expects it there */
47
48#define b64_ntop        __b64_ntop
49#define b64_pton        __b64_pton
50extern int   b64_ntop(u_char const *, size_t, char *, size_t);
51extern int   b64_pton(char const *, u_char *, size_t);
52
53
54/* The following declarations should *not* be part of the public C library
55 * headers, and are also in bionic/libc/private/resolv_iface.h
56 *
57 * Use a guard macro to prevent duplication until we modify system/netd
58 * to use the proper header.
59 */
60#ifndef _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED
61#define _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED
62
63/* Set name of default interface */
64extern void _resolv_set_default_iface(const char* ifname);
65
66/* set name servers for an interface */
67extern void _resolv_set_nameservers_for_iface(const char* ifname, char** servers, int numservers);
68
69/* tell resolver of the address of an interface */
70extern void _resolv_set_addr_of_iface(const char* ifname, struct in_addr* addr);
71
72/* flush the cache associated with the default interface */
73extern void _resolv_flush_cache_for_default_iface();
74
75/* flush the cache associated with a certain interface */
76extern void _resolv_flush_cache_for_iface(const char* ifname);
77
78#endif /* _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED */
79
80__END_DECLS
81
82#endif /* _RESOLV_H_ */
83