1 /* init.c - initialize mdb backend */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2000-2011 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>.
20 #include <ac/string.h>
21 #include <ac/unistd.h>
22 #include <ac/stdlib.h>
30 static const struct berval mdmi_databases[] = {
38 mdb_id_compare( const MDB_val *a, const MDB_val *b )
40 return *(ID *)a->mv_data < *(ID *)b->mv_data ? -1 : *(ID *)a->mv_data > *(ID *)b->mv_data;
44 mdb_db_init( BackendDB *be, ConfigReply *cr )
49 Debug( LDAP_DEBUG_TRACE,
50 LDAP_XSTRING(mdb_db_init) ": Initializing mdb database\n",
53 /* allocate backend-database-specific stuff */
54 mdb = (struct mdb_info *) ch_calloc( 1, sizeof(struct mdb_info) );
56 /* DBEnv parameters */
57 mdb->mi_dbenv_home = ch_strdup( SLAPD_DEFAULT_DB_DIR );
58 mdb->mi_dbenv_flags = 0;
59 mdb->mi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
61 mdb->mi_search_stack_depth = DEFAULT_SEARCH_STACK_DEPTH;
62 mdb->mi_search_stack = NULL;
64 mdb->mi_mapsize = DEFAULT_MAPSIZE;
67 be->be_cf_ocs = be->bd_info->bi_cf_ocs;
69 #ifndef MDB_MULTIPLE_SUFFIXES
70 SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_ONE_SUFFIX;
73 rc = mdb_monitor_db_init( be );
79 mdb_db_close( BackendDB *be, ConfigReply *cr );
82 mdb_db_open( BackendDB *be, ConfigReply *cr )
85 struct mdb_info *mdb = (struct mdb_info *) be->be_private;
91 if ( be->be_suffix == NULL ) {
92 Debug( LDAP_DEBUG_ANY,
93 LDAP_XSTRING(mdb_db_open) ": need suffix.\n",
98 Debug( LDAP_DEBUG_ARGS,
99 LDAP_XSTRING(mdb_db_open) ": \"%s\"\n",
100 be->be_suffix[0].bv_val, 0, 0 );
102 /* Check existence of dbenv_home. Any error means trouble */
103 rc = stat( mdb->mi_dbenv_home, &stat1 );
105 Debug( LDAP_DEBUG_ANY,
106 LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
107 "cannot access database directory \"%s\" (%d).\n",
108 be->be_suffix[0].bv_val, mdb->mi_dbenv_home, errno );
112 /* mdb is always clean */
113 be->be_flags |= SLAP_DBFLAG_CLEAN;
115 rc = mdb_env_create( &mdb->mi_dbenv );
117 Debug( LDAP_DEBUG_ANY,
118 LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
119 "mdb_env_create failed: %s (%d).\n",
120 be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
124 if ( mdb->mi_readers ) {
125 rc = mdb_env_set_maxreaders( mdb->mi_dbenv, mdb->mi_readers );
127 Debug( LDAP_DEBUG_ANY,
128 LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
129 "mdb_env_set_maxreaders failed: %s (%d).\n",
130 be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
135 rc = mdb_env_set_mapsize( mdb->mi_dbenv, mdb->mi_mapsize );
137 Debug( LDAP_DEBUG_ANY,
138 LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
139 "mdb_env_set_mapsize failed: %s (%d).\n",
140 be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
144 rc = mdb_env_set_maxdbs( mdb->mi_dbenv, MDB_INDICES );
146 Debug( LDAP_DEBUG_ANY,
147 LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
148 "mdb_env_set_maxdbs failed: %s (%d).\n",
149 be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
154 strcpy( path, mdb->mi_dbenv_home );
158 dbhome = mdb->mi_dbenv_home;
161 Debug( LDAP_DEBUG_TRACE,
162 LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
164 be->be_suffix[0].bv_val, mdb->mi_dbenv_home, 0);
166 flags = mdb->mi_dbenv_flags;
168 if ( slapMode & SLAP_TOOL_QUICK )
171 if ( slapMode & SLAP_TOOL_READONLY)
174 rc = mdb_env_open( mdb->mi_dbenv, dbhome,
175 flags, mdb->mi_dbenv_mode );
178 Debug( LDAP_DEBUG_ANY,
179 LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened, err %d. "
180 "Restore from backup!\n",
181 be->be_suffix[0].bv_val, rc, 0 );
185 rc = mdb_txn_begin( mdb->mi_dbenv, 0, &txn );
187 Debug( LDAP_DEBUG_ANY,
188 LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened, err %d. "
189 "Restore from backup!\n",
190 be->be_suffix[0].bv_val, rc, 0 );
194 /* open (and create) main databases */
195 for( i = 0; mdmi_databases[i].bv_val; i++ ) {
196 flags = MDB_INTEGERKEY;
197 if( i == MDB_ID2ENTRY ) {
198 if ( !(slapMode & (SLAP_TOOL_READMAIN|SLAP_TOOL_READONLY) ))
201 if ( i == MDB_DN2ID )
202 flags |= MDB_DUPSORT;
203 if ( !(slapMode & SLAP_TOOL_READONLY) )
208 mdmi_databases[i].bv_val,
213 snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
214 "mdb_open(%s/%s) failed: %s (%d).",
215 be->be_suffix[0].bv_val,
216 mdb->mi_dbenv_home, mdmi_databases[i].bv_val,
217 mdb_strerror(rc), rc );
218 Debug( LDAP_DEBUG_ANY,
219 LDAP_XSTRING(mdb_db_open) ": %s\n",
224 if ( i == MDB_ID2ENTRY )
225 mdb_set_compare( txn, mdb->mi_dbis[i], mdb_id_compare );
226 else if ( i == MDB_DN2ID )
227 mdb_set_dupsort( txn, mdb->mi_dbis[i], mdb_dup_compare );
231 rc = mdb_ad_read( mdb, txn );
233 mdb_txn_abort( txn );
237 rc = mdb_attr_dbs_open( be, txn, cr );
239 mdb_txn_abort( txn );
243 rc = mdb_txn_commit(txn);
249 rc = mdb_monitor_db_open( be );
254 mdb->mi_flags |= MDB_IS_OPEN;
259 mdb_db_close( be, NULL );
264 mdb_db_close( BackendDB *be, ConfigReply *cr )
267 struct mdb_info *mdb = (struct mdb_info *) be->be_private;
270 /* monitor handling */
271 (void)mdb_monitor_db_close( be );
273 mdb->mi_flags &= ~MDB_IS_OPEN;
275 if( mdb->mi_dbenv ) {
276 mdb_reader_flush( mdb->mi_dbenv );
279 if ( mdb->mi_dbenv ) {
280 if ( mdb->mi_dbis[0] ) {
282 rc = mdb_txn_begin( mdb->mi_dbenv, MDB_RDONLY, &txn );
284 mdb_attr_dbs_close( mdb, txn );
285 for ( i=0; i<MDB_NDB; i++ )
286 mdb_close( txn, mdb->mi_dbis[i] );
288 mdb_txn_abort( txn );
290 /* force a sync, but not if we were ReadOnly,
291 * and not in Quick mode.
293 if (!(slapMode & (SLAP_TOOL_QUICK|SLAP_TOOL_READONLY))) {
294 rc = mdb_env_sync( mdb->mi_dbenv, 1 );
296 Debug( LDAP_DEBUG_ANY,
297 "mdb_db_close: database \"%s\": "
298 "mdb_env_sync failed: %s (%d).\n",
299 be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
304 mdb_env_close( mdb->mi_dbenv );
305 mdb->mi_dbenv = NULL;
312 mdb_db_destroy( BackendDB *be, ConfigReply *cr )
314 struct mdb_info *mdb = (struct mdb_info *) be->be_private;
316 /* stop and remove checkpoint task */
317 if ( mdb->mi_txn_cp_task ) {
318 struct re_s *re = mdb->mi_txn_cp_task;
319 mdb->mi_txn_cp_task = NULL;
320 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
321 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
322 ldap_pvt_runqueue_stoptask( &slapd_rq, re );
323 ldap_pvt_runqueue_remove( &slapd_rq, re );
324 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
327 /* monitor handling */
328 (void)mdb_monitor_db_destroy( be );
330 if( mdb->mi_dbenv_home ) ch_free( mdb->mi_dbenv_home );
332 mdb_attr_index_destroy( mdb );
335 be->be_private = NULL;
346 static char *controls[] = {
348 LDAP_CONTROL_MANAGEDSAIT,
350 LDAP_CONTROL_PAGEDRESULTS,
351 LDAP_CONTROL_PRE_READ,
352 LDAP_CONTROL_POST_READ,
353 LDAP_CONTROL_SUBENTRIES,
354 LDAP_CONTROL_X_PERMISSIVE_MODIFY,
356 LDAP_CONTROL_X_TXN_SPEC,
361 /* initialize the underlying database system */
362 Debug( LDAP_DEBUG_TRACE,
363 LDAP_XSTRING(mdb_back_initialize) ": initialize "
364 MDB_UCTYPE " backend\n", 0, 0, 0 );
367 SLAP_BFLAG_INCREMENT |
368 SLAP_BFLAG_SUBENTRIES |
370 SLAP_BFLAG_REFERRALS;
372 bi->bi_controls = controls;
374 { /* version check */
375 int major, minor, patch, ver;
376 char *version = mdb_version( &major, &minor, &patch );
380 /* All our stdio does an ASCII to EBCDIC conversion on
381 * the output. Strings from the MDB library are already
382 * in EBCDIC; we have to go back and forth...
384 strcpy( v2, version );
388 ver = (major << 24) | (minor << 16) | patch;
389 if( ver != MDB_VERSION_FULL ) {
390 /* fail if a versions don't match */
391 Debug( LDAP_DEBUG_ANY,
392 LDAP_XSTRING(mdb_back_initialize) ": "
393 "MDB library version mismatch:"
394 " expected " MDB_VERSION_STRING ","
395 " got %s\n", version, 0, 0 );
399 Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(mdb_back_initialize)
400 ": %s\n", version, 0, 0 );
408 bi->bi_db_init = mdb_db_init;
409 bi->bi_db_config = config_generic_wrapper;
410 bi->bi_db_open = mdb_db_open;
411 bi->bi_db_close = mdb_db_close;
412 bi->bi_db_destroy = mdb_db_destroy;
414 bi->bi_op_add = mdb_add;
415 bi->bi_op_bind = mdb_bind;
416 bi->bi_op_compare = mdb_compare;
417 bi->bi_op_delete = mdb_delete;
418 bi->bi_op_modify = mdb_modify;
419 bi->bi_op_modrdn = mdb_modrdn;
420 bi->bi_op_search = mdb_search;
422 bi->bi_op_unbind = 0;
424 bi->bi_extended = mdb_extended;
426 bi->bi_chk_referrals = 0;
427 bi->bi_operational = mdb_operational;
429 bi->bi_has_subordinates = mdb_hasSubordinates;
430 bi->bi_entry_release_rw = mdb_entry_release;
431 bi->bi_entry_get_rw = mdb_entry_get;
434 * hooks for slap tools
436 bi->bi_tool_entry_open = mdb_tool_entry_open;
437 bi->bi_tool_entry_close = mdb_tool_entry_close;
438 bi->bi_tool_entry_first = backend_tool_entry_first;
439 bi->bi_tool_entry_first_x = mdb_tool_entry_first_x;
440 bi->bi_tool_entry_next = mdb_tool_entry_next;
441 bi->bi_tool_entry_get = mdb_tool_entry_get;
442 bi->bi_tool_entry_put = mdb_tool_entry_put;
443 bi->bi_tool_entry_reindex = mdb_tool_entry_reindex;
444 bi->bi_tool_sync = 0;
445 bi->bi_tool_dn2id_get = mdb_tool_dn2id_get;
446 bi->bi_tool_entry_modify = mdb_tool_entry_modify;
448 bi->bi_connection_init = 0;
449 bi->bi_connection_destroy = 0;
451 rc = mdb_back_init_cf( bi );
456 #if (SLAPD_MDB == SLAPD_MOD_DYNAMIC)
458 SLAP_BACKEND_INIT_MODULE( mdb )
460 #endif /* SLAPD_MDB == SLAPD_MOD_DYNAMIC */