#pragma once /*** This file is part of systemd. Copyright 2014 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include "hashmap.h" #include "list.h" #include "prioq.h" #include "time-util.h" typedef struct DnsCache { Hashmap *by_key; Prioq *by_expiry; unsigned n_hit; unsigned n_miss; } DnsCache; #include "resolved-dns-answer.h" #include "resolved-dns-packet.h" #include "resolved-dns-question.h" #include "resolved-dns-rr.h" void dns_cache_flush(DnsCache *c); void dns_cache_prune(DnsCache *c); 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); int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, bool clamp_ttl, int *rcode, DnsAnswer **answer, bool *authenticated); int dns_cache_check_conflicts(DnsCache *cache, DnsResourceRecord *rr, int owner_family, const union in_addr_union *owner_address); void dns_cache_dump(DnsCache *cache, FILE *f); bool dns_cache_is_empty(DnsCache *cache); unsigned dns_cache_size(DnsCache *cache); int dns_cache_export_shared_to_packet(DnsCache *cache, DnsPacket *p);