src/resolve/resolved-dns-cache.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright 2014 Lennart Poettering
   6 ***/
   7
   8 #include "hashmap.h"
   9 #include "list.h"
  10 #include "prioq.h"
  11 #include "time-util.h"
  12
  13 typedef struct DnsCache {
  14         Hashmap *by_key;
  15         Prioq *by_expiry;
  16         unsigned n_hit;
  17         unsigned n_miss;
  18 } DnsCache;
  19
  20 #include "resolved-dns-answer.h"
  21 #include "resolved-dns-packet.h"
  22 #include "resolved-dns-question.h"
  23 #include "resolved-dns-rr.h"
  24
  25 void dns_cache_flush(DnsCache *c);
  26 void dns_cache_prune(DnsCache *c);
  27
  28 int dns_cache_put(DnsCache *c, DnsResourceKey *key, int rcode, DnsAnswer *answer, bool authenticated, uint32_t nsec_ttl, usec_t timestamp, int owner_family, const union in_addr_union *owner_address);
  29 int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, bool clamp_ttl, int *rcode, DnsAnswer **answer, bool *authenticated);
  30
  31 int dns_cache_check_conflicts(DnsCache *cache, DnsResourceRecord *rr, int owner_family, const union in_addr_union *owner_address);
  32
  33 void dns_cache_dump(DnsCache *cache, FILE *f);
  34 bool dns_cache_is_empty(DnsCache *cache);
  35
  36 unsigned dns_cache_size(DnsCache *cache);
  37
  38 int dns_cache_export_shared_to_packet(DnsCache *cache, DnsPacket *p);