bdb.c File Reference

Berkeley DB backend for the key/value Store. More...

#include "config.h"
#include <db.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/stat.h>
#include <unistd.h>
#include "mutt/lib.h"
#include "lib.h"

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Data Structures
struct	BdbStoreData
	Berkeley DB Store. More...

Functions
static void	bdb_sdata_free (struct BdbStoreData **ptr)
	Free Bdb Store Data.
static struct BdbStoreData *	bdb_sdata_new (void)
	Create new Bdb Store Data.
static void	dbt_init (DBT *dbt, void *data, size_t len)
	Initialise a BDB thing.
static void	dbt_empty_init (DBT *dbt)
	Initialise an empty BDB thing.
static StoreHandle *	store_bdb_open (const char *path, bool create)
	Open a connection to a Store - Implements StoreOps::open() -.
static void *	store_bdb_fetch (StoreHandle *store, const char *key, size_t klen, size_t *vlen)
	Fetch a Value from the Store - Implements StoreOps::fetch() -.
static void	store_bdb_free (StoreHandle *store, void **ptr)
	Free a Value returned by fetch() - Implements StoreOps::free() -.
static int	store_bdb_store (StoreHandle *store, const char *key, size_t klen, void *value, size_t vlen)
	Write a Value to the Store - Implements StoreOps::store() -.
static int	store_bdb_delete_record (StoreHandle *store, const char *key, size_t klen)
	Delete a record from the Store - Implements StoreOps::delete_record() -.
static void	store_bdb_close (StoreHandle **ptr)
	Close a Store connection - Implements StoreOps::close() -.
static const char *	store_bdb_version (void)
	Get a Store version string - Implements StoreOps::version() -.

Detailed Description

Berkeley DB backend for the key/value Store.

Authors

• Pietro Cerutti
• Richard Russon

Copyright

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file bdb.c.

Function Documentation

bdb_sdata_free()

static void bdb_sdata_free ( struct BdbStoreData **  ptr )

static

Free Bdb Store Data.

Parameters

ptr	Bdb Store Data to free

Definition at line 58 of file bdb.c.

{
  if (!ptr || !*ptr)
    return;
 
  struct BdbStoreData *sdata = *ptr;
  buf_dealloc(&sdata->lockfile);
 
  FREE(ptr);
}

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bdb_sdata_new()

static struct BdbStoreData * bdb_sdata_new ( void  )

static

Create new Bdb Store Data.

Return values

ptr	New Bdb Store Data

Definition at line 73 of file bdb.c.

{
  struct BdbStoreData *sdata = mutt_mem_calloc(1, sizeof(struct BdbStoreData));
 
  buf_alloc(&sdata->lockfile, 128);
 
  return sdata;
}

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dbt_init()

static void dbt_init ( DBT *  dbt, void *  data, size_t  len  )

static

Initialise a BDB thing.

Parameters

dbt	Thing to initialise
data	ID string to associate
len	Length of ID string

Definition at line 88 of file bdb.c.

{
  dbt->data = data;
  dbt->size = len;
  dbt->ulen = len;
  dbt->dlen = 0;
  dbt->doff = 0;
  dbt->flags = DB_DBT_USERMEM;
}

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dbt_empty_init()

static void dbt_empty_init ( DBT *  dbt )

static

Initialise an empty BDB thing.

Parameters

dbt	Thing to initialise

Definition at line 102 of file bdb.c.

{
  dbt->data = NULL;
  dbt->size = 0;
  dbt->ulen = 0;
  dbt->dlen = 0;
  dbt->doff = 0;
  dbt->flags = 0;
}

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