/* init.c - initialize ldbm backend */
/* $OpenLDAP: pkg/ldap/servers/slapd/back-ldbm/init.c,v 1.96.2.8 2007/01/02 21:44:02 kurt Exp $ */
/* This work is part of OpenLDAP Software .
*
* Copyright 1998-2007 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* .
*/
#include "portable.h"
#include
#include
#include
#include "slap.h"
#include "back-ldbm.h"
#include
int
ldbm_back_initialize(
BackendInfo *bi
)
{
static char *controls[] = {
LDAP_CONTROL_MANAGEDSAIT,
LDAP_CONTROL_X_PERMISSIVE_MODIFY,
NULL
};
bi->bi_controls = controls;
bi->bi_flags |=
SLAP_BFLAG_INCREMENT |
#ifdef LDBM_SUBENTRIES
SLAP_BFLAG_SUBENTRIES |
#endif
SLAP_BFLAG_ALIASES |
SLAP_BFLAG_REFERRALS;
bi->bi_open = ldbm_back_open;
bi->bi_config = NULL;
bi->bi_close = ldbm_back_close;
bi->bi_destroy = ldbm_back_destroy;
bi->bi_db_init = ldbm_back_db_init;
bi->bi_db_config = ldbm_back_db_config;
bi->bi_db_open = ldbm_back_db_open;
bi->bi_db_close = ldbm_back_db_close;
bi->bi_db_destroy = ldbm_back_db_destroy;
bi->bi_op_bind = ldbm_back_bind;
bi->bi_op_unbind = 0;
bi->bi_op_search = ldbm_back_search;
bi->bi_op_compare = ldbm_back_compare;
bi->bi_op_modify = ldbm_back_modify;
bi->bi_op_modrdn = ldbm_back_modrdn;
bi->bi_op_add = ldbm_back_add;
bi->bi_op_delete = ldbm_back_delete;
bi->bi_op_abandon = 0;
bi->bi_extended = ldbm_back_extended;
bi->bi_entry_release_rw = ldbm_back_entry_release_rw;
bi->bi_entry_get_rw = ldbm_back_entry_get;
bi->bi_chk_referrals = ldbm_back_referrals;
bi->bi_operational = ldbm_back_operational;
bi->bi_has_subordinates = ldbm_back_hasSubordinates;
/*
* hooks for slap tools
*/
bi->bi_tool_entry_open = ldbm_tool_entry_open;
bi->bi_tool_entry_close = ldbm_tool_entry_close;
bi->bi_tool_entry_first = ldbm_tool_entry_first;
bi->bi_tool_entry_next = ldbm_tool_entry_next;
bi->bi_tool_entry_get = ldbm_tool_entry_get;
bi->bi_tool_entry_put = ldbm_tool_entry_put;
bi->bi_tool_entry_reindex = ldbm_tool_entry_reindex;
bi->bi_tool_sync = ldbm_tool_sync;
bi->bi_tool_dn2id_get = 0;
bi->bi_tool_id2entry_get = 0;
bi->bi_tool_entry_modify = 0;
bi->bi_connection_init = 0;
bi->bi_connection_destroy = 0;
return 0;
}
int
ldbm_back_destroy(
BackendInfo *bi
)
{
return 0;
}
int
ldbm_back_open(
BackendInfo *bi
)
{
int rc;
/* initialize the underlying database system */
rc = ldbm_initialize( NULL );
return rc;
}
int
ldbm_back_close(
BackendInfo *bi
)
{
/* terminate the underlying database system */
ldbm_shutdown();
return 0;
}
int
ldbm_back_db_init(
Backend *be
)
{
struct ldbminfo *li;
/* allocate backend-database-specific stuff */
li = (struct ldbminfo *) ch_calloc( 1, sizeof(struct ldbminfo) );
/* arrange to read nextid later (on first request for it) */
li->li_nextid = NOID;
/* default cache size */
li->li_cache.c_maxsize = DEFAULT_CACHE_SIZE;
/* default database cache size */
li->li_dbcachesize = DEFAULT_DBCACHE_SIZE;
/* default db mode is with locking */
li->li_dblocking = 1;
/* default db mode is with write synchronization */
li->li_dbwritesync = 1;
/* default file creation mode */
li->li_mode = SLAPD_DEFAULT_DB_MODE;
/* default database directory */
li->li_directory = ch_strdup( SLAPD_DEFAULT_DB_DIR );
/* DB_ENV environment pointer for DB3 */
li->li_dbenv = 0;
/* envdirok is turned on by ldbm_initialize_env if DB3 */
li->li_envdirok = 0;
/* syncfreq is 0 if disabled, or # seconds */
li->li_dbsyncfreq = 0;
/* wait up to dbsyncwaitn times if server is busy */
li->li_dbsyncwaitn = 12;
/* delay interval */
li->li_dbsyncwaitinterval = 5;
/* current wait counter */
li->li_dbsyncwaitcount = 0;
/* initialize various mutex locks & condition variables */
ldap_pvt_thread_rdwr_init( &li->li_giant_rwlock );
ldap_pvt_thread_mutex_init( &li->li_cache.c_mutex );
ldap_pvt_thread_mutex_init( &li->li_dbcache_mutex );
ldap_pvt_thread_cond_init( &li->li_dbcache_cv );
be->be_private = li;
return 0;
}
int
ldbm_back_db_open(
BackendDB *be
)
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
int rc;
rc = alock_open( &li->li_alock_info, "slapd",
li->li_directory, ALOCK_UNIQUE );
if ( rc == ALOCK_BUSY ) {
Debug( LDAP_DEBUG_ANY,
"ldbm_back_db_open: database already in use\n",
0, 0, 0 );
return -1;
} else if ( rc == ALOCK_RECOVER ) {
Debug( LDAP_DEBUG_ANY,
"ldbm_back_db_open: unclean shutdown detected;"
" database may be inconsistent!\n",
0, 0, 0 );
rc = alock_recover( &li->li_alock_info );
}
if ( rc != ALOCK_CLEAN ) {
Debug( LDAP_DEBUG_ANY,
"ldbm_back_db_open: alock package is unstable;"
" database may be inconsistent!\n",
0, 0, 0 );
}
li->li_dbenv = ldbm_initialize_env( li->li_directory,
li->li_dbcachesize, &li->li_envdirok );
/* If we're in server mode and a sync frequency was set,
* submit a task to perform periodic db syncs.
*/
if (( slapMode & SLAP_SERVER_MODE ) && li->li_dbsyncfreq > 0 )
{
ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
ldap_pvt_runqueue_insert( &slapd_rq, li->li_dbsyncfreq,
ldbm_cache_sync_daemon, be,
"ldbm_cache_sync", be->be_suffix[0].bv_val );
ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
}
return 0;
}
int
ldbm_back_db_destroy(
BackendDB *be
)
{
/* should free/destroy every in be_private */
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
if (li->li_dbenv)
ldbm_shutdown_env(li->li_dbenv);
free( li->li_directory );
attr_index_destroy( li->li_attrs );
ldap_pvt_thread_rdwr_destroy( &li->li_giant_rwlock );
ldap_pvt_thread_mutex_destroy( &li->li_cache.c_mutex );
ldap_pvt_thread_mutex_destroy( &li->li_dbcache_mutex );
ldap_pvt_thread_cond_destroy( &li->li_dbcache_cv );
free( be->be_private );
be->be_private = NULL;
return 0;
}
#if SLAPD_LDBM == SLAPD_MOD_DYNAMIC
/* conditionally define the init_module() function */
SLAP_BACKEND_INIT_MODULE( ldbm )
#endif /* SLAPD_LDBM == SLAPD_MOD_DYNAMIC */