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Add support for a dns cache per interface

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Initial commit for dns cache per interface.
Added a type that holds a reference to a
cache and name of associated interface,
address of interface, name server(s)
associated with an interface etc.

New functions to set default interface,
address of name servers etc.

Change-Id: Ie991bc5592fd998409853d8bf77d7fe69035dac5
This commit is contained in:
Mattias Falk
2011-04-04 16:12:35 +02:00
committed by Johan Redestig
parent b127b1f208
commit 23d3e6b21b
3 changed files with 480 additions and 21 deletions
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16
libc/include/resolv.h
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@@ -34,6 +34,7 @@
#include <sys/socket.h>
#include <stdio.h>
#include <arpa/nameser.h>
#include <netinet/in.h>
__BEGIN_DECLS
@@ -49,6 +50,21 @@ extern struct __res_state *__res_state(void);
extern int b64_ntop(u_char const *, size_t, char *, size_t);
extern int b64_pton(char const *, u_char *, size_t);
/* Set name of default interface */
extern void _resolv_set_default_iface(const char* ifname);
/* set name servers for an interface */
extern void _resolv_set_nameservers_for_iface(const char* ifname, char** servers, int numservers);
/* tell resolver of the address of an interface */
extern void _resolv_set_addr_of_iface(const char* ifname, struct in_addr* addr);
/* flush the cache associated with the default interface */
extern void _resolv_flush_cache_for_default_iface();
/* flush the cache associated with a certain interface */
extern void _resolv_flush_cache_for_iface(const char* ifname);
__END_DECLS
#endif /* _RESOLV_H_ */