src/resolve/resolved-dns-cache.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 /***
   6   This file is part of systemd.
   7
   8   Copyright 2014 Lennart Poettering
   9
  10   systemd is free software; you can redistribute it and/or modify it
  11   under the terms of the GNU Lesser General Public License as published by
  12   the Free Software Foundation; either version 2.1 of the License, or
  13   (at your option) any later version.
  14
  15   systemd is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   Lesser General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  22 ***/
  23
  24
  25 #include "hashmap.h"
  26 #include "prioq.h"
  27 #include "time-util.h"
  28 #include "list.h"
  29
  30 typedef struct DnsCache {
  31         Hashmap *by_key;
  32         Prioq *by_expiry;
  33 } DnsCache;
  34
  35 #include "resolved-dns-rr.h"
  36 #include "resolved-dns-question.h"
  37 #include "resolved-dns-answer.h"
  38
  39 void dns_cache_flush(DnsCache *c);
  40 void dns_cache_prune(DnsCache *c);
  41
  42 int dns_cache_put(DnsCache *c, DnsQuestion *q, int rcode, DnsAnswer *answer, unsigned max_rrs, usec_t timestamp, int owner_family, const union in_addr_union *owner_address);
  43 int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **answer);
  44
  45 int dns_cache_check_conflicts(DnsCache *cache, DnsResourceRecord *rr, int owner_family, const union in_addr_union *owner_address);