/* init.c - initialize ldbm backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2006 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
+ * <http://www.OpenLDAP.org/license.html>.
+ */
#include "portable.h"
#include "slap.h"
#include "back-ldbm.h"
+#include <ldap_rq.h>
-void
-ldbm_back_init(
+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 |
+ SLAP_BFLAG_SUBENTRIES |
+ 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;
- char *argv[ 4 ];
- int i;
- extern pthread_mutex_t dbEnvInit_mutex;
-
- /* allocate backend-specific stuff */
+ /* 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 = -1;
+ 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 cache mode is sync on write */
- li->li_dbcachewsync = 1;
+ /* 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 = DEFAULT_MODE;
+ li->li_mode = SLAPD_DEFAULT_DB_MODE;
/* default database directory */
- li->li_directory = DEFAULT_DB_DIRECTORY;
-
- /* always index dn, id2children, objectclass (used in some searches) */
- argv[ 0 ] = "dn";
- argv[ 1 ] = "dn";
- argv[ 2 ] = NULL;
- attr_syntax_config( "ldbm dn initialization", 0, 2, argv );
- argv[ 0 ] = "dn";
- argv[ 1 ] = "sub";
- argv[ 2 ] = "eq";
- argv[ 3 ] = NULL;
- attr_index_config( li, "ldbm dn initialization", 0, 3, argv, 1 );
- argv[ 0 ] = "id2children";
- argv[ 1 ] = "eq";
- argv[ 2 ] = NULL;
- attr_index_config( li, "ldbm id2children initialization", 0, 2, argv,
- 1 );
- argv[ 0 ] = "objectclass";
- argv[ 1 ] = ch_strdup( "pres,eq" );
- argv[ 2 ] = NULL;
- attr_index_config( li, "ldbm objectclass initialization", 0, 2, argv,
- 1 );
- free( argv[ 1 ] );
+ 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 */
- pthread_mutex_init( &li->li_root_mutex, pthread_mutexattr_default );
- pthread_mutex_init( &li->li_add_mutex, pthread_mutexattr_default );
- pthread_mutex_init( &li->li_cache.c_mutex, pthread_mutexattr_default );
- pthread_mutex_init( &li->li_nextid_mutex, pthread_mutexattr_default );
- pthread_mutex_init( &li->li_dbcache_mutex, pthread_mutexattr_default );
- pthread_cond_init( &li->li_dbcache_cv, pthread_condattr_default );
- for ( i = 0; i < MAXDBCACHE; i++ ) {
- pthread_mutex_init( &li->li_dbcache[i].dbc_mutex,
- pthread_mutexattr_default );
- pthread_cond_init( &li->li_dbcache[i].dbc_cv,
- pthread_condattr_default );
- }
- pthread_mutex_init( &dbEnvInit_mutex, pthread_mutexattr_default );
+ 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 */
+
+
projects / openldap / blobdiff