rrset.h

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/*
 * services/cache/rrset.h - Resource record set cache.
 *
 * Copyright (c) 2007, NLnet Labs. All rights reserved.
 *
 * This software is open source.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 
 * Neither the name of the NLNET LABS nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

 
#ifndef SERVICES_CACHE_RRSET_H
#define SERVICES_CACHE_RRSET_H
#include "util/storage/lruhash.h"
#include "util/storage/slabhash.h"
#include "util/data/packed_rrset.h"
struct config_file;
struct alloc_cache;
struct rrset_ref;
struct regional;

struct rrset_cache {
    struct slabhash table;
};

struct rrset_cache* rrset_cache_create(struct config_file* cfg, 
    struct alloc_cache* alloc);

void rrset_cache_delete(struct rrset_cache* r);

struct rrset_cache* rrset_cache_adjust(struct rrset_cache* r, 
    struct config_file* cfg, struct alloc_cache* alloc);

void rrset_cache_touch(struct rrset_cache* r, struct ub_packed_rrset_key* key,
    hashvalue_type hash, rrset_id_type id);

int rrset_cache_update(struct rrset_cache* r, struct rrset_ref* ref, 
    struct alloc_cache* alloc, time_t timenow);

void rrset_cache_update_wildcard(struct rrset_cache* rrset_cache, 
    struct ub_packed_rrset_key* rrset, uint8_t* ce, size_t ce_len,
    struct alloc_cache* alloc, time_t timenow);

struct ub_packed_rrset_key* rrset_cache_lookup(struct rrset_cache* r,
    uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
    uint32_t flags, time_t timenow, int wr);

int rrset_array_lock(struct rrset_ref* ref, size_t count, time_t timenow);

void rrset_array_unlock(struct rrset_ref* ref, size_t count);

void rrset_array_unlock_touch(struct rrset_cache* r, struct regional* scratch,
    struct rrset_ref* ref, size_t count);

void rrset_update_sec_status(struct rrset_cache* r, 
    struct ub_packed_rrset_key* rrset, time_t now);

void rrset_check_sec_status(struct rrset_cache* r, 
    struct ub_packed_rrset_key* rrset, time_t now);

void rrset_cache_remove(struct rrset_cache* r, uint8_t* nm, size_t nmlen,
    uint16_t type, uint16_t dclass, uint32_t flags);

void rrset_markdel(void* key);
 
#endif /* SERVICES_CACHE_RRSET_H */