1 /* init.c - initialize ldbm backend */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2005 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
21 #include <ac/string.h>
22 #include <ac/socket.h>
25 #include "back-ldbm.h"
33 static char *controls[] = {
34 LDAP_CONTROL_MANAGEDSAIT,
35 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
36 LDAP_CONTROL_X_PERMISSIVE_MODIFY,
41 bi->bi_controls = controls;
44 SLAP_BFLAG_INCREMENT |
45 #ifdef LDBM_SUBENTRIES
46 SLAP_BFLAG_SUBENTRIES |
51 bi->bi_open = ldbm_back_open;
53 bi->bi_close = ldbm_back_close;
54 bi->bi_destroy = ldbm_back_destroy;
56 bi->bi_db_init = ldbm_back_db_init;
57 bi->bi_db_config = ldbm_back_db_config;
58 bi->bi_db_open = ldbm_back_db_open;
59 bi->bi_db_close = ldbm_back_db_close;
60 bi->bi_db_destroy = ldbm_back_db_destroy;
62 bi->bi_op_bind = ldbm_back_bind;
64 bi->bi_op_search = ldbm_back_search;
65 bi->bi_op_compare = ldbm_back_compare;
66 bi->bi_op_modify = ldbm_back_modify;
67 bi->bi_op_modrdn = ldbm_back_modrdn;
68 bi->bi_op_add = ldbm_back_add;
69 bi->bi_op_delete = ldbm_back_delete;
70 bi->bi_op_abandon = 0;
72 bi->bi_extended = ldbm_back_extended;
74 bi->bi_entry_release_rw = ldbm_back_entry_release_rw;
75 bi->bi_entry_get_rw = ldbm_back_entry_get;
76 bi->bi_chk_referrals = ldbm_back_referrals;
77 bi->bi_operational = ldbm_back_operational;
78 bi->bi_has_subordinates = ldbm_back_hasSubordinates;
81 * hooks for slap tools
83 bi->bi_tool_entry_open = ldbm_tool_entry_open;
84 bi->bi_tool_entry_close = ldbm_tool_entry_close;
85 bi->bi_tool_entry_first = ldbm_tool_entry_first;
86 bi->bi_tool_entry_next = ldbm_tool_entry_next;
87 bi->bi_tool_entry_get = ldbm_tool_entry_get;
88 bi->bi_tool_entry_put = ldbm_tool_entry_put;
89 bi->bi_tool_entry_reindex = ldbm_tool_entry_reindex;
90 bi->bi_tool_sync = ldbm_tool_sync;
92 bi->bi_tool_dn2id_get = 0;
93 bi->bi_tool_id2entry_get = 0;
94 bi->bi_tool_entry_modify = 0;
96 bi->bi_connection_init = 0;
97 bi->bi_connection_destroy = 0;
117 /* initialize the underlying database system */
118 rc = ldbm_initialize( NULL );
127 /* terminate the underlying database system */
139 /* allocate backend-database-specific stuff */
140 li = (struct ldbminfo *) ch_calloc( 1, sizeof(struct ldbminfo) );
142 /* arrange to read nextid later (on first request for it) */
143 li->li_nextid = NOID;
145 /* default cache size */
146 li->li_cache.c_maxsize = DEFAULT_CACHE_SIZE;
148 /* default database cache size */
149 li->li_dbcachesize = DEFAULT_DBCACHE_SIZE;
151 /* default db mode is with locking */
152 li->li_dblocking = 1;
154 /* default db mode is with write synchronization */
155 li->li_dbwritesync = 1;
157 /* default file creation mode */
158 li->li_mode = SLAPD_DEFAULT_DB_MODE;
160 /* default database directory */
161 li->li_directory = ch_strdup( SLAPD_DEFAULT_DB_DIR );
163 /* DB_ENV environment pointer for DB3 */
166 /* envdirok is turned on by ldbm_initialize_env if DB3 */
169 /* syncfreq is 0 if disabled, or # seconds */
170 li->li_dbsyncfreq = 0;
172 /* wait up to dbsyncwaitn times if server is busy */
173 li->li_dbsyncwaitn = 12;
176 li->li_dbsyncwaitinterval = 5;
178 /* current wait counter */
179 li->li_dbsyncwaitcount = 0;
181 /* initialize various mutex locks & condition variables */
182 ldap_pvt_thread_rdwr_init( &li->li_giant_rwlock );
183 ldap_pvt_thread_mutex_init( &li->li_cache.c_mutex );
184 ldap_pvt_thread_mutex_init( &li->li_dbcache_mutex );
185 ldap_pvt_thread_cond_init( &li->li_dbcache_cv );
197 struct ldbminfo *li = (struct ldbminfo *) be->be_private;
198 li->li_dbenv = ldbm_initialize_env( li->li_directory,
199 li->li_dbcachesize, &li->li_envdirok );
201 /* If we're in server mode and a sync frequency was set,
202 * submit a task to perform periodic db syncs.
204 if (( slapMode & SLAP_SERVER_MODE ) && li->li_dbsyncfreq > 0 )
206 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
207 ldap_pvt_runqueue_insert( &slapd_rq, li->li_dbsyncfreq,
208 ldbm_cache_sync_daemon, be,
209 "ldbm_cache_sync", be->be_suffix[0].bv_val );
210 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
217 ldbm_back_db_destroy(
221 /* should free/destroy every in be_private */
222 struct ldbminfo *li = (struct ldbminfo *) be->be_private;
225 ldbm_shutdown_env(li->li_dbenv);
227 free( li->li_directory );
228 attr_index_destroy( li->li_attrs );
230 ldap_pvt_thread_rdwr_destroy( &li->li_giant_rwlock );
231 ldap_pvt_thread_mutex_destroy( &li->li_cache.c_mutex );
232 ldap_pvt_thread_mutex_destroy( &li->li_dbcache_mutex );
233 ldap_pvt_thread_cond_destroy( &li->li_dbcache_cv );
235 free( be->be_private );
236 be->be_private = NULL;
241 #if SLAPD_LDBM == SLAPD_MOD_DYNAMIC
243 /* conditionally define the init_module() function */
244 SLAP_BACKEND_INIT_MODULE( ldbm )
246 #endif /* SLAPD_LDBM == SLAPD_MOD_DYNAMIC */