val_kcache.h File Reference

This file contains functions for caching validated key entries. More...

#include "util/storage/slabhash.h"

Data Structures
struct	key_cache
	Key cache. More...

Functions
struct key_cache *	key_cache_create (struct config_file *cfg)
	Create the key cache. More...
void	key_cache_delete (struct key_cache *kcache)
	Delete the key cache. More...
void	key_cache_insert (struct key_cache *kcache, struct key_entry_key *kkey, int copy_reason)
	Insert or update a key cache entry. More...
void	key_cache_remove (struct key_cache *kcache, uint8_t *name, size_t namelen, uint16_t key_class)
	Remove an entry from the key cache. More...
struct key_entry_key *	key_cache_obtain (struct key_cache *kcache, uint8_t *name, size_t namelen, uint16_t key_class, struct regional *region, time_t now)
	Lookup key entry in the cache. More...
size_t	key_cache_get_mem (struct key_cache *kcache)
	Get memory in use by the key cache. More...

Detailed Description

This file contains functions for caching validated key entries.

Function Documentation

key_cache_create()

struct key_cache* key_cache_create

(

struct config_file *

cfg

)

Create the key cache.

Parameters

cfg	config settings for the key cache.

Returns

new key cache or NULL on malloc failure.

References HASH_DEFAULT_STARTARRAY, config_file::key_cache_size, config_file::key_cache_slabs, key_entry_compfunc(), key_entry_deldatafunc(), key_entry_delkeyfunc(), key_entry_sizefunc(), log_err(), key_cache::slab, and slabhash_create().

Referenced by val_apply_cfg().

key_cache_delete()

void key_cache_delete

(

struct key_cache *

kcache

)

Delete the key cache.

Parameters

kcache

to delete

References key_cache::slab, and slabhash_delete().

Referenced by val_deinit().

key_cache_insert()

void key_cache_insert	(	struct key_cache *	kcache,
		struct key_entry_key *	kkey,
		int	copy_reason
	)

Insert or update a key cache entry.

Note that the insert may silently fail if there is not enough memory.

Parameters

kcache	the key cache.
kkey	key entry key, assumed malloced in a region, is copied to perform update or insertion. Its data pointer is also copied.
copy_reason	if the reason string needs to be copied (allocated).

References lruhash_entry::data, key_entry_key::entry, lruhash_entry::hash, key_entry_copy(), key_entry_hash(), key_cache::slab, and slabhash_insert().

Referenced by processValidate().

key_cache_remove()

void key_cache_remove	(	struct key_cache *	kcache,
		uint8_t *	name,
		size_t	namelen,
		uint16_t	key_class
	)

Remove an entry from the key cache.

Parameters

kcache	the key cache.
name	for what name to look; uncompressed wireformat
namelen	length of the name.
key_class	class of the key.

References key_entry_key::entry, lruhash_entry::hash, lruhash_entry::key, key_entry_key::key_class, key_entry_hash(), key_entry_key::name, key_entry_key::namelen, key_cache::slab, and slabhash_remove().

key_cache_obtain()

struct key_entry_key* key_cache_obtain	(	struct key_cache *	kcache,
		uint8_t *	name,
		size_t	namelen,
		uint16_t	key_class,
		struct regional *	region,
		time_t	now
	)

Lookup key entry in the cache.

Looks up the closest key entry above the given name.

Parameters

kcache	the key cache.
name	for what name to look; uncompressed wireformat
namelen	length of the name.
key_class	class of the key.
region	a copy of the key_entry is allocated in this region.
now	current time.

Returns

pointer to a newly allocated key_entry copy in the region, if a key entry could be found, and allocation succeeded and TTL was OK. Otherwise, NULL is returned.

References lruhash_entry::data, dname_is_root(), dname_remove_label(), key_entry_key::entry, key_cache_search(), key_entry_key::key_class, key_entry_copy_toregion(), lruhash_entry::lock, key_entry_key::name, key_entry_key::namelen, and key_entry_data::ttl.

Referenced by iter_indicates_dnssec().

key_cache_get_mem()

size_t key_cache_get_mem

(

struct key_cache *

kcache

)

Get memory in use by the key cache.

Parameters

kcache

the key cache.

Returns

memory in use in bytes.

References key_cache::slab, and slabhash_get_mem().