c63e59039d
name server addresses are read from the dns cache associated wih the interface on which the request shall be done. processes which has requested to issue dns request using specific interface are now proxied to netd. added methods to attach/detach a process to a specific dns cache/interface. added getaddrinfoforinface method which takes an interface as an argument. bug:4815099 bug:5465296 Change-Id: I7a8fe1980cdf99d4d296ddc5c6411f0c72162263
82 lines
3.5 KiB
C
82 lines
3.5 KiB
C
/*
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* Copyright (C) 2011 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _RESOLV_IFACE_H
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#define _RESOLV_IFACE_H
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/* This header contains declarations related to per-interface DNS
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* server selection. They are used by system/netd/ and should not be
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* exposed by the C library's public NDK headers.
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*
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* NOTE: <resolv.h> contains the same declarations, this will be removed
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* when we change system/netd to use this header instead.
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*/
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#include <sys/cdefs.h>
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#include <netinet/in.h>
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__BEGIN_DECLS
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/* Use a guard macro until we remove the same definitions from <resolv.h> */
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#ifndef _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED
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#define _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED
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/* Set name of default interface */
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extern void _resolv_set_default_iface(const char* ifname);
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/* set name servers for an interface */
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extern void _resolv_set_nameservers_for_iface(const char* ifname, char** servers, int numservers,
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const char *domains);
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/* tell resolver of the address of an interface */
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extern void _resolv_set_addr_of_iface(const char* ifname, struct in_addr* addr);
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/* flush the cache associated with the default interface */
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extern void _resolv_flush_cache_for_default_iface();
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/* flush the cache associated with a certain interface */
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extern void _resolv_flush_cache_for_iface(const char* ifname);
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/* set a pid to use the name servers of the specified interface */
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extern void _resolv_set_iface_for_pid(const char* ifname, int pid);
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/* clear pid from being associated with an interface */
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extern void _resolv_clear_iface_for_pid(int pid);
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/** Gets the name of the interface to which the pid is attached.
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* On error, -1 is returned.
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* If no interface is found, 0 is returned and buff is set to empty ('\0').
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* If an interface is found, the name is copied to buff and the length of the name is returned.
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* Arguments: pid The pid to find an interface for
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* buff A buffer to copy the result to
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* buffLen Length of buff. An interface is at most IF_NAMESIZE in length */
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extern int _resolv_get_pids_associated_interface(int pid, char* buff, int buffLen);
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#endif /* _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED */
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__END_DECLS
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#endif /* _RESOLV_IFACE_H */
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