[thirdparty/systemd.git] / src / resolve / resolved-dns-cache.h

#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, 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);
Commit	Line	Data
	1	#pragma once
	2
	3	/***
	4	This file is part of systemd.
	5
	6	Copyright 2014 Lennart Poettering
	7
	8	systemd is free software; you can redistribute it and/or modify it
	9	under the terms of the GNU Lesser General Public License as published by
	10	the Free Software Foundation; either version 2.1 of the License, or
	11	(at your option) any later version.
	12
	13	systemd is distributed in the hope that it will be useful, but
	14	WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	Lesser General Public License for more details.
	17
	18	You should have received a copy of the GNU Lesser General Public License
	19	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	20	***/
	21
	22	#include "hashmap.h"
	23	#include "list.h"
	24	#include "prioq.h"
	25	#include "time-util.h"
	26
	27	typedef struct DnsCache {
	28	Hashmap *by_key;
	29	Prioq *by_expiry;
	30	unsigned n_hit;
	31	unsigned n_miss;
	32	} DnsCache;
	33
	34	#include "resolved-dns-answer.h"
	35	#include "resolved-dns-packet.h"
	36	#include "resolved-dns-question.h"
	37	#include "resolved-dns-rr.h"
	38
	39	void dns_cache_flush(DnsCache *c);
	40	void dns_cache_prune(DnsCache *c);
	41
	42	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);
	43	int dns_cache_lookup(DnsCache c, DnsResourceKey key, int rcode, DnsAnswer answer, bool authenticated);
	44
	45	int dns_cache_check_conflicts(DnsCache cache, DnsResourceRecord rr, int owner_family, const union in_addr_union *owner_address);
	46
	47	void dns_cache_dump(DnsCache cache, FILE f);
	48	bool dns_cache_is_empty(DnsCache *cache);
	49
	50	unsigned dns_cache_size(DnsCache *cache);
	51
	52	int dns_cache_export_shared_to_packet(DnsCache cache, DnsPacket p);