resolv_netid.h revision 7f2d4c21cc7b7f27a5163f5a6d5bc724116a8cde 
1/*
2 * Copyright (C) 2014 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_NETID_H
29#define _RESOLV_NETID_H
30
31/* This header contains declarations related to per-network DNS
32 * server selection. They are used by system/netd/ and should not be
33 * exposed by the C library's public NDK headers.
34 */
35#include <sys/cdefs.h>
36#include <netinet/in.h>
37
38/*
39 * Passing NETID_UNSET as the netId causes system/netd/DnsProxyListener.cpp to
40 * fill in the appropriate default netId for the query.
41 */
42#define NETID_UNSET 0u
43
44/*
45 * MARK_UNSET represents the default (i.e. unset) value for a socket mark.
46 */
47#define MARK_UNSET 0u
48
49__BEGIN_DECLS
50
51struct addrinfo;
52
53#define __used_in_netd __attribute__((visibility ("default")))
54
55struct hostent *android_gethostbyaddrfornet(const void *, socklen_t, int, unsigned, unsigned) __used_in_netd;
56struct hostent *android_gethostbynamefornet(const char *, int, unsigned, unsigned) __used_in_netd;
57int android_getaddrinfofornet(const char *, const char *, const struct addrinfo *, unsigned,
58		unsigned, struct addrinfo **) __used_in_netd;
59
60/* set name servers for a network */
61extern void _resolv_set_nameservers_for_net(unsigned netid,
62    const char** servers, int numservers, const char *domains) __used_in_netd;
63
64/* flush the cache associated with a certain network */
65extern void _resolv_flush_cache_for_net(unsigned netid) __used_in_netd;
66
67/* delete the cache associated with a certain network */
68extern void _resolv_delete_cache_for_net(unsigned netid) __used_in_netd;
69
70/* Internal use only. */
71struct hostent *android_gethostbyaddrfornet_proxy(const void *, socklen_t, int , unsigned);
72int android_getnameinfofornet(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t,
73		 int, unsigned, unsigned);
74
75__END_DECLS
76
77#endif /* _RESOLV_NETID_H */
78