#ifndef _RESOLV_CACHE_H_
#define _RESOLV_CACHE_H_
+#include <sys/cdefs.h>
+
struct __res_state;
struct resolv_cache; /* forward */
/* gets the cache for an interface. Set ifname argument to NULL or
* empty buffer ('\0') to get cache for default interface.
* returned cache might be NULL*/
+__LIBC_HIDDEN__
extern struct resolv_cache* __get_res_cache(const char* ifname);
/* this gets called everytime we detect some changes in the DNS configuration
* and will flush the cache */
+__LIBC_HIDDEN__
extern void _resolv_cache_reset( unsigned generation );
/* Gets the address of the n:th name server for the default interface
* Return length of address on success else 0.
* Note: The first name server is at n = 1 */
+__LIBC_HIDDEN__
extern int _resolv_cache_get_nameserver(int n, char* addr, int addrLen);
/* Gets the address of the n:th name server for a certain interface
* Return length of address on success else 0.
* Note: The first name server is at n = 1 */
+__LIBC_HIDDEN__
extern int _resolv_cache_get_nameserver_for_iface(const char* ifname, int n,
char* addr, int addrLen);
/* Gets addrinfo of the n:th name server associated with an interface.
* NULL is returned if no address if found.
* Note: The first name server is at n = 1. */
+__LIBC_HIDDEN__
extern struct addrinfo* _resolv_cache_get_nameserver_addr_for_iface(const char* ifname, int n);
/* Gets addrinfo of the n:th name server associated with the default interface
* NULL is returned if no address if found.
* Note: The first name server is at n = 1. */
+__LIBC_HIDDEN__
extern struct addrinfo* _resolv_cache_get_nameserver_addr(int n);
/* gets the address associated with the default interface */
+__LIBC_HIDDEN__
extern struct in_addr* _resolv_get_addr_of_default_iface();
/* gets the address associated with the specified interface */
+__LIBC_HIDDEN__
extern struct in_addr* _resolv_get_addr_of_iface(const char* ifname);
/* Copy the name of the default interface to provided buffer.
* Return length of buffer on success on failure -1 is returned */
+__LIBC_HIDDEN__
extern int _resolv_get_default_iface(char* buff, int buffLen);
/* sets the name server addresses to the provided res_state structure. The
* name servers are retrieved from the cache which is associated
* with the interface to which the res_state structure is associated */
+__LIBC_HIDDEN__
extern int _resolv_populate_res_for_iface(struct __res_state* statp);
typedef enum {
RESOLV_CACHE_FOUND /* the cache found the answer */
} ResolvCacheStatus;
+__LIBC_HIDDEN__
extern ResolvCacheStatus
_resolv_cache_lookup( struct resolv_cache* cache,
const void* query,
/* add a (query,answer) to the cache, only call if _resolv_cache_lookup
* did return RESOLV_CACHE_NOTFOUND
*/
+__LIBC_HIDDEN__
extern void
_resolv_cache_add( struct resolv_cache* cache,
const void* query,
int answerlen );
/* Notify the cache a request failed */
+__LIBC_HIDDEN__
extern void
_resolv_cache_query_failed( struct resolv_cache* cache,
const void* query,