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bionic: Replace iface with opaque netid in resolver.

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Replace iface cache key with netid.

Replace _mark with netid.

Mark sockets used to test IPv4/IPv6 support as well as sockets
used to determine source address for rfc6724 sort.

Remove pid/uid mappings (functionality moved to system/netd).

Do not create resolv_cache when it does not exist, but rather only
when DNS configuration is supplied.

Clean up unused functions.

Change-Id: I9ccfda2902cc0943e87c9bc346ad9a2578accdab
This commit is contained in:
Szymon Jakubczak
2014-02-14 17:07:23 -05:00
committed by Paul Jensen
parent bc475bc8d1
commit ea9bf67881
13 changed files with 208 additions and 950 deletions
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70
libc/dns/include/resolv_netid.h Normal file
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/*
* Copyright (C) 2014 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _RESOLV_NETID_H
#define _RESOLV_NETID_H
/* This header contains declarations related to per-network DNS
* server selection. They are used by system/netd/ and should not be
* exposed by the C library's public NDK headers.
*/
#include <sys/cdefs.h>
#include <netinet/in.h>
/*
* Passing NETID_UNSET as the netId causes system/netd/DnsProxyListener.cpp to
* fill in the appropriate default netId for the query.
*/
#define NETID_UNSET 0u
/*
* MARK_UNSET represents the default (i.e. unset) value for a socket mark.
*/
#define MARK_UNSET 0u
__BEGIN_DECLS
struct addrinfo;
struct hostent *android_gethostbyaddrfornet(const void *, socklen_t, int, unsigned, unsigned);
struct hostent *android_gethostbyaddrfornet_proxy(const void *, socklen_t, int , unsigned);
struct hostent *android_gethostbynamefornet(const char *, int, unsigned, unsigned);
int android_getaddrinfofornet(const char *, const char *, const struct addrinfo *, unsigned,
unsigned, struct addrinfo **);
int android_getnameinfofornet(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t,
int, unsigned, unsigned);
/* set name servers for a network */
extern void _resolv_set_nameservers_for_net(unsigned netid,
const char** servers, int numservers, const char *domains);
/* flush the cache associated with a certain network */
extern void _resolv_flush_cache_for_net(unsigned netid);
__END_DECLS
#endif /* _RESOLV_NETID_H */