git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/init.c

   1 /* init.c - initialize bdb backend */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  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>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21 #include <ac/unistd.h>
  22 #include <ac/stdlib.h>
  23
  24 #include "back-bdb.h"
  25 #include <lutil.h>
  26 #include <ldap_rq.h>
  27
  28 static const struct bdbi_database {
  29         char *file;
  30         char *name;
  31         int type;
  32         int flags;
  33 } bdbi_databases[] = {
  34         { "id2entry" BDB_SUFFIX, "id2entry", DB_BTREE, 0 },
  35         { "dn2id" BDB_SUFFIX, "dn2id", DB_BTREE, 0 },
  36         { NULL, NULL, 0, 0 }
  37 };
  38
  39 struct berval bdb_uuid = BER_BVNULL;
  40
  41 typedef void * db_malloc(size_t);
  42 typedef void * db_realloc(void *, size_t);
  43
  44 static int
  45 bdb_db_init( BackendDB *be )
  46 {
  47         struct bdb_info *bdb;
  48
  49         Debug( LDAP_DEBUG_ANY,
  50                 LDAP_XSTRING(bdb_db_init) ": Initializing "
  51                 BDB_UCTYPE " database\n", 0, 0, 0 );
  52
  53         /* allocate backend-database-specific stuff */
  54         bdb = (struct bdb_info *) ch_calloc( 1, sizeof(struct bdb_info) );
  55
  56         /* DBEnv parameters */
  57         bdb->bi_dbenv_home = ch_strdup( SLAPD_DEFAULT_DB_DIR );
  58         bdb->bi_dbenv_xflags = 0;
  59         bdb->bi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
  60
  61         bdb->bi_cache.c_maxsize = DEFAULT_CACHE_SIZE;
  62
  63         bdb->bi_lock_detect = DB_LOCK_DEFAULT;
  64         bdb->bi_search_stack_depth = DEFAULT_SEARCH_STACK_DEPTH;
  65         bdb->bi_search_stack = NULL;
  66
  67         ldap_pvt_thread_mutex_init( &bdb->bi_database_mutex );
  68         ldap_pvt_thread_mutex_init( &bdb->bi_lastid_mutex );
  69         ldap_pvt_thread_mutex_init( &bdb->bi_cache.lru_mutex );
  70         ldap_pvt_thread_mutex_init( &bdb->bi_cache.c_dntree.bei_kids_mutex );
  71         ldap_pvt_thread_rdwr_init ( &bdb->bi_cache.c_rwlock );
  72
  73         be->be_private = bdb;
  74
  75         return 0;
  76 }
  77
  78 static void *
  79 bdb_checkpoint( void *ctx, void *arg )
  80 {
  81         struct re_s *rtask = arg;
  82         struct bdb_info *bdb = rtask->arg;
  83
  84         TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte,
  85                 bdb->bi_txn_cp_min, 0 );
  86         return NULL;
  87 }
  88
  89 static int
  90 bdb_db_open( BackendDB *be )
  91 {
  92         int rc, i;
  93         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  94         u_int32_t flags;
  95 #ifdef HAVE_EBCDIC
  96         char path[MAXPATHLEN];
  97 #endif
  98
  99         Debug( LDAP_DEBUG_ARGS,
 100                 "bdb_db_open: %s\n",
 101                 be->be_suffix[0].bv_val, 0, 0 );
 102
 103 #ifndef BDB_MULTIPLE_SUFFIXES
 104         if ( be->be_suffix[1].bv_val ) {
 105         Debug( LDAP_DEBUG_ANY,
 106                 "bdb_db_open: only one suffix allowed\n", 0, 0, 0 );
 107                 return -1;
 108         }
 109 #endif
 110         /* we should check existance of dbenv_home and db_directory */
 111
 112         rc = db_env_create( &bdb->bi_dbenv, 0 );
 113         if( rc != 0 ) {
 114                 Debug( LDAP_DEBUG_ANY,
 115                         "bdb_db_open: db_env_create failed: %s (%d)\n",
 116                         db_strerror(rc), rc, 0 );
 117                 return rc;
 118         }
 119
 120         flags = DB_INIT_MPOOL | DB_THREAD | DB_CREATE;
 121
 122         if ( !( slapMode & SLAP_TOOL_QUICK ))
 123                 flags |= DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN;
 124
 125 #if 0
 126         /* Never do automatic recovery, must perform it manually.
 127          * Otherwise restarting with gentlehup will corrupt the
 128          * database.
 129          */
 130         if( !(slapMode & SLAP_TOOL_MODE) ) flags |= DB_RECOVER;
 131 #endif
 132
 133         /* If a key was set, use shared memory for the BDB environment */
 134         if ( bdb->bi_shm_key ) {
 135                 bdb->bi_dbenv->set_shm_key( bdb->bi_dbenv, bdb->bi_shm_key );
 136                 flags |= DB_SYSTEM_MEM;
 137         }
 138
 139         bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0].bv_val );
 140         bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );
 141         bdb->bi_dbenv->set_lk_detect( bdb->bi_dbenv, bdb->bi_lock_detect );
 142
 143         /* One long-lived TXN per thread, two TXNs per write op */
 144         bdb->bi_dbenv->set_tx_max( bdb->bi_dbenv, connection_pool_max * 3 );
 145
 146 #ifdef SLAP_ZONE_ALLOC
 147         if ( bdb->bi_cache.c_maxsize ) {
 148                 bdb->bi_cache.c_zctx = slap_zn_mem_create(
 149                                                                 SLAP_ZONE_INITSIZE,
 150                                                                 SLAP_ZONE_MAXSIZE,
 151                                                                 SLAP_ZONE_DELTA,
 152                                                                 SLAP_ZONE_SIZE);
 153         }
 154 #endif
 155
 156         if ( bdb->bi_idl_cache_max_size ) {
 157                 bdb->bi_idl_tree = NULL;
 158                 ldap_pvt_thread_rdwr_init( &bdb->bi_idl_tree_rwlock );
 159                 ldap_pvt_thread_mutex_init( &bdb->bi_idl_tree_lrulock );
 160                 bdb->bi_idl_cache_size = 0;
 161         }
 162
 163 #ifdef BDB_SUBDIRS
 164         {
 165                 char dir[MAXPATHLEN], *ptr;
 166
 167                 if (bdb->bi_dbenv_home[0] == '.') {
 168                         /* If home is a relative path, relative subdirs
 169                          * are just concat'd by BDB. We don't want the
 170                          * path to be concat'd twice, e.g.
 171                          * ./test-db/./test-db/tmp
 172                          */
 173                         ptr = dir;
 174                 } else {
 175                         ptr = lutil_strcopy( dir, bdb->bi_dbenv_home );
 176                         *ptr++ = LDAP_DIRSEP[0];
 177 #ifdef HAVE_EBCDIC
 178                         __atoe( dir );
 179 #endif
 180                 }
 181
 182                 strcpy( ptr, BDB_TMP_SUBDIR );
 183 #ifdef HAVE_EBCDIC
 184                 __atoe( ptr );
 185 #endif
 186                 rc = bdb->bi_dbenv->set_tmp_dir( bdb->bi_dbenv, dir );
 187                 if( rc != 0 ) {
 188                         Debug( LDAP_DEBUG_ANY,
 189                                 "bdb_db_open: set_tmp_dir(%s) failed: %s (%d)\n",
 190                                 dir, db_strerror(rc), rc );
 191                         return rc;
 192                 }
 193
 194                 strcpy( ptr, BDB_LG_SUBDIR );
 195 #ifdef HAVE_EBCDIC
 196                 __atoe( ptr );
 197 #endif
 198                 rc = bdb->bi_dbenv->set_lg_dir( bdb->bi_dbenv, dir );
 199                 if( rc != 0 ) {
 200                         Debug( LDAP_DEBUG_ANY,
 201                                 "bdb_db_open: set_lg_dir(%s) failed: %s (%d)\n",
 202                                 dir, db_strerror(rc), rc );
 203                         return rc;
 204                 }
 205
 206                 strcpy( ptr, BDB_DATA_SUBDIR );
 207 #ifdef HAVE_EBCDIC
 208                 __atoe( ptr );
 209 #endif
 210                 rc = bdb->bi_dbenv->set_data_dir( bdb->bi_dbenv, dir );
 211                 if( rc != 0 ) {
 212                         Debug( LDAP_DEBUG_ANY,
 213                                 "bdb_db_open: set_data_dir(%s) failed: %s (%d)\n",
 214                                 dir, db_strerror(rc), rc );
 215                         return rc;
 216                 }
 217         }
 218 #endif
 219
 220         if( bdb->bi_dbenv_xflags != 0 ) {
 221                 rc = bdb->bi_dbenv->set_flags( bdb->bi_dbenv,
 222                         bdb->bi_dbenv_xflags, 1);
 223                 if( rc != 0 ) {
 224                         Debug( LDAP_DEBUG_ANY,
 225                                 "bdb_db_open: dbenv_set_flags failed: %s (%d)\n",
 226                                 db_strerror(rc), rc, 0 );
 227                         return rc;
 228                 }
 229         }
 230
 231         Debug( LDAP_DEBUG_TRACE,
 232                 "bdb_db_open: dbenv_open(%s)\n",
 233                 bdb->bi_dbenv_home, 0, 0);
 234
 235 #ifdef HAVE_EBCDIC
 236         strcpy( path, bdb->bi_dbenv_home );
 237         __atoe( path );
 238         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 239                 path,
 240                 flags,
 241                 bdb->bi_dbenv_mode );
 242 #else
 243         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 244                 bdb->bi_dbenv_home,
 245                 flags,
 246                 bdb->bi_dbenv_mode );
 247 #endif
 248         if( rc != 0 ) {
 249                 Debug( LDAP_DEBUG_ANY,
 250                         "bdb_db_open: dbenv_open failed: %s (%d)\n",
 251                         db_strerror(rc), rc, 0 );
 252                 return rc;
 253         }
 254
 255         flags = DB_THREAD | bdb->bi_db_opflags;
 256
 257 #ifdef DB_AUTO_COMMIT
 258         if ( !( slapMode & SLAP_TOOL_QUICK ))
 259                 flags |= DB_AUTO_COMMIT;
 260 #endif
 261
 262         bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
 263                 BDB_INDICES * sizeof(struct bdb_db_info *) );
 264
 265         /* open (and create) main database */
 266         for( i = 0; bdbi_databases[i].name; i++ ) {
 267                 struct bdb_db_info *db;
 268
 269                 db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
 270
 271                 rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
 272                 if( rc != 0 ) {
 273                         Debug( LDAP_DEBUG_ANY,
 274                                 "bdb_db_open: db_create(%s) failed: %s (%d)\n",
 275                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 276                         return rc;
 277                 }
 278
 279                 if( i == BDB_ID2ENTRY ) {
 280                         rc = db->bdi_db->set_pagesize( db->bdi_db,
 281                                 BDB_ID2ENTRY_PAGESIZE );
 282                         if ( slapMode & SLAP_TOOL_READMAIN ) {
 283                                 flags |= DB_RDONLY;
 284                         } else {
 285                                 flags |= DB_CREATE;
 286                         }
 287                 } else {
 288                         rc = db->bdi_db->set_flags( db->bdi_db,
 289                                 DB_DUP | DB_DUPSORT );
 290 #ifndef BDB_HIER
 291                         if ( slapMode & SLAP_TOOL_READONLY ) {
 292                                 flags |= DB_RDONLY;
 293                         } else {
 294                                 flags |= DB_CREATE;
 295                         }
 296 #else
 297                         if ( slapMode & (SLAP_TOOL_READONLY|SLAP_TOOL_READMAIN) ) {
 298                                 flags |= DB_RDONLY;
 299                         } else {
 300                                 flags |= DB_CREATE;
 301                         }
 302 #endif
 303                         rc = db->bdi_db->set_pagesize( db->bdi_db,
 304                                 BDB_PAGESIZE );
 305                 }
 306
 307 #ifdef HAVE_EBCDIC
 308                 strcpy( path, bdbi_databases[i].file );
 309                 __atoe( path );
 310                 rc = DB_OPEN( db->bdi_db,
 311                         path,
 312                 /*      bdbi_databases[i].name, */ NULL,
 313                         bdbi_databases[i].type,
 314                         bdbi_databases[i].flags | flags,
 315                         bdb->bi_dbenv_mode );
 316 #else
 317                 rc = DB_OPEN( db->bdi_db,
 318                         bdbi_databases[i].file,
 319                 /*      bdbi_databases[i].name, */ NULL,
 320                         bdbi_databases[i].type,
 321                         bdbi_databases[i].flags | flags,
 322                         bdb->bi_dbenv_mode );
 323 #endif
 324
 325                 if ( rc != 0 ) {
 326                         char    buf[SLAP_TEXT_BUFLEN];
 327
 328                         snprintf( buf, sizeof(buf), "%s/%s",
 329                                 bdb->bi_dbenv_home, bdbi_databases[i].file );
 330                         Debug( LDAP_DEBUG_ANY,
 331                                 "bdb_db_open: db_open(%s) failed: %s (%d)\n",
 332                                 buf, db_strerror(rc), rc );
 333                         return rc;
 334                 }
 335
 336                 flags &= ~(DB_CREATE | DB_RDONLY);
 337                 db->bdi_name = bdbi_databases[i].name;
 338                 bdb->bi_databases[i] = db;
 339         }
 340
 341         bdb->bi_databases[i] = NULL;
 342         bdb->bi_ndatabases = i;
 343
 344         /* get nextid */
 345         rc = bdb_last_id( be, NULL );
 346         if( rc != 0 ) {
 347                 Debug( LDAP_DEBUG_ANY,
 348                         "bdb_db_open: last_id(%s) failed: %s (%d)\n",
 349                         bdb->bi_dbenv_home, db_strerror(rc), rc );
 350                 return rc;
 351         }
 352
 353         if ( !( slapMode & SLAP_TOOL_QUICK )) {
 354                 XLOCK_ID(bdb->bi_dbenv, &bdb->bi_cache.c_locker);
 355         }
 356
 357         /* If we're in server mode and time-based checkpointing is enabled,
 358          * submit a task to perform periodic checkpoints.
 359          */
 360         if ( slapMode & SLAP_SERVER_MODE && bdb->bi_txn_cp &&
 361                 bdb->bi_txn_cp_min )  {
 362                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 363                 ldap_pvt_runqueue_insert( &slapd_rq, bdb->bi_txn_cp_min*60,
 364                         bdb_checkpoint, bdb );
 365                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 366         }
 367
 368         return 0;
 369 }
 370
 371 static int
 372 bdb_db_close( BackendDB *be )
 373 {
 374         int rc;
 375         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 376         struct bdb_db_info *db;
 377         bdb_idl_cache_entry_t *entry, *next_entry;
 378
 379         while( bdb->bi_ndatabases-- ) {
 380                 db = bdb->bi_databases[bdb->bi_ndatabases];
 381                 rc = db->bdi_db->close( db->bdi_db, 0 );
 382                 /* Lower numbered names are not strdup'd */
 383                 if( bdb->bi_ndatabases >= BDB_NDB )
 384                         free( db->bdi_name );
 385                 free( db );
 386         }
 387         free( bdb->bi_databases );
 388         bdb_attr_index_destroy( bdb->bi_attrs );
 389
 390         bdb_cache_release_all (&bdb->bi_cache);
 391
 392         if ( bdb->bi_idl_cache_max_size ) {
 393                 ldap_pvt_thread_rdwr_wlock ( &bdb->bi_idl_tree_rwlock );
 394                 avl_free( bdb->bi_idl_tree, NULL );
 395                 entry = bdb->bi_idl_lru_head;
 396                 while ( entry != NULL ) {
 397                         next_entry = entry->idl_lru_next;
 398                         if ( entry->idl )
 399                                 free( entry->idl );
 400                         free( entry->kstr.bv_val );
 401                         free( entry );
 402                         entry = next_entry;
 403                 }
 404                 ldap_pvt_thread_rdwr_wunlock ( &bdb->bi_idl_tree_rwlock );
 405         }
 406
 407         if ( !( slapMode & SLAP_TOOL_QUICK )) {
 408                 XLOCK_ID_FREE(bdb->bi_dbenv, bdb->bi_cache.c_locker);
 409         }
 410
 411         return 0;
 412 }
 413
 414 static int
 415 bdb_db_destroy( BackendDB *be )
 416 {
 417         int rc;
 418         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 419
 420         /* close db environment */
 421         if( bdb->bi_dbenv ) {
 422                 /* force a checkpoint */
 423                 if ( !( slapMode & SLAP_TOOL_QUICK )) {
 424                         rc = TXN_CHECKPOINT( bdb->bi_dbenv, 0, 0, DB_FORCE );
 425                         if( rc != 0 ) {
 426                                 Debug( LDAP_DEBUG_ANY,
 427                                         "bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
 428                                         db_strerror(rc), rc, 0 );
 429                         }
 430                 }
 431
 432                 rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
 433                 bdb->bi_dbenv = NULL;
 434                 if( rc != 0 ) {
 435                         Debug( LDAP_DEBUG_ANY,
 436                                 "bdb_db_destroy: close failed: %s (%d)\n",
 437                                 db_strerror(rc), rc, 0 );
 438                         return rc;
 439                 }
 440         }
 441
 442         if( bdb->bi_dbenv_home ) ch_free( bdb->bi_dbenv_home );
 443
 444         ldap_pvt_thread_rdwr_destroy ( &bdb->bi_cache.c_rwlock );
 445         ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.lru_mutex );
 446         ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.c_dntree.bei_kids_mutex );
 447         ldap_pvt_thread_mutex_destroy( &bdb->bi_lastid_mutex );
 448         ldap_pvt_thread_mutex_destroy( &bdb->bi_database_mutex );
 449         if ( bdb->bi_idl_cache_max_size ) {
 450                 ldap_pvt_thread_rdwr_destroy( &bdb->bi_idl_tree_rwlock );
 451                 ldap_pvt_thread_mutex_destroy( &bdb->bi_idl_tree_lrulock );
 452         }
 453
 454         ch_free( bdb );
 455         be->be_private = NULL;
 456
 457         return 0;
 458 }
 459
 460 int
 461 bdb_back_initialize(
 462         BackendInfo     *bi )
 463 {
 464         static char *controls[] = {
 465                 LDAP_CONTROL_ASSERT,
 466                 LDAP_CONTROL_MANAGEDSAIT,
 467                 LDAP_CONTROL_NOOP,
 468                 LDAP_CONTROL_PAGEDRESULTS,
 469 #ifdef LDAP_CONTROL_SUBENTRIES
 470                 LDAP_CONTROL_SUBENTRIES,
 471 #endif
 472 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 473                 LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 474 #endif
 475                 NULL
 476         };
 477
 478         /* initialize the underlying database system */
 479         Debug( LDAP_DEBUG_TRACE,
 480                 LDAP_XSTRING(bdb_back_initialize) ": initialize "
 481                 BDB_UCTYPE " backend\n", 0, 0, 0 );
 482
 483         bi->bi_flags |=
 484                 SLAP_BFLAG_INCREMENT |
 485 #ifdef BDB_SUBENTRIES
 486                 SLAP_BFLAG_SUBENTRIES |
 487 #endif
 488                 SLAP_BFLAG_ALIASES |
 489                 SLAP_BFLAG_REFERRALS;
 490
 491         bi->bi_controls = controls;
 492
 493         {       /* version check */
 494                 int major, minor, patch, ver;
 495                 char *version = db_version( &major, &minor, &patch );
 496 #ifdef HAVE_EBCDIC
 497                 char v2[1024];
 498
 499                 /* All our stdio does an ASCII to EBCDIC conversion on
 500                  * the output. Strings from the BDB library are already
 501                  * in EBCDIC; we have to go back and forth...
 502                  */
 503                 strcpy( v2, version );
 504                 __etoa( v2 );
 505                 version = v2;
 506 #endif
 507
 508                 ver = (major << 24) | (minor << 16) | patch;
 509                 if( ver < DB_VERSION_FULL )
 510                 {
 511                         Debug( LDAP_DEBUG_ANY,
 512                                 LDAP_XSTRING(bdb_back_initialize) ": "
 513                                 "BDB library version mismatch:"
 514                                 " expected " DB_VERSION_STRING ","
 515                                 " got %s\n", version, 0, 0 );
 516                 }
 517
 518                 Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(bdb_back_initialize)
 519                         ": %s\n", version, 0, 0 );
 520         }
 521
 522         db_env_set_func_free( ber_memfree );
 523         db_env_set_func_malloc( (db_malloc *)ber_memalloc );
 524         db_env_set_func_realloc( (db_realloc *)ber_memrealloc );
 525 #ifndef NO_THREAD
 526         /* This is a no-op on a NO_THREAD build. Leave the default
 527          * alone so that BDB will sleep on interprocess conflicts.
 528          */
 529         db_env_set_func_yield( ldap_pvt_thread_yield );
 530 #endif
 531
 532         {
 533                 static char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
 534
 535                 bdb_uuid.bv_len = lutil_uuidstr( uuidbuf, sizeof( uuidbuf ));
 536                 bdb_uuid.bv_val = uuidbuf;
 537         }
 538
 539         bi->bi_open = 0;
 540         bi->bi_close = 0;
 541         bi->bi_config = 0;
 542         bi->bi_destroy = 0;
 543
 544         bi->bi_db_init = bdb_db_init;
 545         bi->bi_db_config = bdb_db_config;
 546         bi->bi_db_open = bdb_db_open;
 547         bi->bi_db_close = bdb_db_close;
 548         bi->bi_db_destroy = bdb_db_destroy;
 549
 550         bi->bi_op_add = bdb_add;
 551         bi->bi_op_bind = bdb_bind;
 552         bi->bi_op_compare = bdb_compare;
 553         bi->bi_op_delete = bdb_delete;
 554         bi->bi_op_modify = bdb_modify;
 555         bi->bi_op_modrdn = bdb_modrdn;
 556         bi->bi_op_search = bdb_search;
 557
 558         bi->bi_op_unbind = 0;
 559
 560         bi->bi_extended = bdb_extended;
 561
 562         bi->bi_chk_referrals = bdb_referrals;
 563         bi->bi_operational = bdb_operational;
 564         bi->bi_has_subordinates = bdb_hasSubordinates;
 565         bi->bi_entry_release_rw = bdb_entry_release;
 566         bi->bi_entry_get_rw = bdb_entry_get;
 567
 568         /*
 569          * hooks for slap tools
 570          */
 571         bi->bi_tool_entry_open = bdb_tool_entry_open;
 572         bi->bi_tool_entry_close = bdb_tool_entry_close;
 573         bi->bi_tool_entry_first = bdb_tool_entry_next;
 574         bi->bi_tool_entry_next = bdb_tool_entry_next;
 575         bi->bi_tool_entry_get = bdb_tool_entry_get;
 576         bi->bi_tool_entry_put = bdb_tool_entry_put;
 577         bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
 578         bi->bi_tool_sync = 0;
 579         bi->bi_tool_dn2id_get = bdb_tool_dn2id_get;
 580         bi->bi_tool_id2entry_get = bdb_tool_id2entry_get;
 581         bi->bi_tool_entry_modify = bdb_tool_entry_modify;
 582
 583         bi->bi_connection_init = 0;
 584         bi->bi_connection_destroy = 0;
 585
 586         return 0;
 587 }
 588
 589 #if     (SLAPD_BDB == SLAPD_MOD_DYNAMIC && !defined(BDB_HIER)) || \
 590         (SLAPD_HDB == SLAPD_MOD_DYNAMIC && defined(BDB_HIER))
 591
 592 /* conditionally define the init_module() function */
 593 #ifdef BDB_HIER
 594 SLAP_BACKEND_INIT_MODULE( hdb )
 595 #else /* !BDB_HIER */
 596 SLAP_BACKEND_INIT_MODULE( bdb )
 597 #endif /* !BDB_HIER */
 598
 599 #endif /* SLAPD_[BH]DB == SLAPD_MOD_DYNAMIC */
 600