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 #include "alock.h"
  28
  29 static const struct bdbi_database {
  30         char *file;
  31         char *name;
  32         int type;
  33         int flags;
  34 } bdbi_databases[] = {
  35         { "id2entry" BDB_SUFFIX, "id2entry", DB_BTREE, 0 },
  36         { "dn2id" BDB_SUFFIX, "dn2id", DB_BTREE, 0 },
  37         { NULL, NULL, 0, 0 }
  38 };
  39
  40 typedef void * db_malloc(size_t);
  41 typedef void * db_realloc(void *, size_t);
  42
  43 static int
  44 bdb_db_init( BackendDB *be )
  45 {
  46         struct bdb_info *bdb;
  47
  48         Debug( LDAP_DEBUG_TRACE,
  49                 LDAP_XSTRING(bdb_db_init) ": Initializing " BDB_UCTYPE " database\n",
  50                 0, 0, 0 );
  51
  52         /* allocate backend-database-specific stuff */
  53         bdb = (struct bdb_info *) ch_calloc( 1, sizeof(struct bdb_info) );
  54
  55         /* DBEnv parameters */
  56         bdb->bi_dbenv_home = ch_strdup( SLAPD_DEFAULT_DB_DIR );
  57         bdb->bi_dbenv_xflags = 0;
  58         bdb->bi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
  59
  60         bdb->bi_cache.c_maxsize = DEFAULT_CACHE_SIZE;
  61
  62         bdb->bi_lock_detect = DB_LOCK_DEFAULT;
  63         bdb->bi_search_stack_depth = DEFAULT_SEARCH_STACK_DEPTH;
  64         bdb->bi_search_stack = NULL;
  65
  66         ldap_pvt_thread_mutex_init( &bdb->bi_database_mutex );
  67         ldap_pvt_thread_mutex_init( &bdb->bi_lastid_mutex );
  68         ldap_pvt_thread_mutex_init( &bdb->bi_cache.lru_mutex );
  69         ldap_pvt_thread_mutex_init( &bdb->bi_cache.c_dntree.bei_kids_mutex );
  70         ldap_pvt_thread_rdwr_init ( &bdb->bi_cache.c_rwlock );
  71
  72         be->be_private = bdb;
  73         be->be_cf_table = be->bd_info->bi_cf_table;
  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         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
  87         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
  88         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
  89         return NULL;
  90 }
  91
  92 static int
  93 bdb_db_open( BackendDB *be )
  94 {
  95         int rc, i;
  96         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  97         u_int32_t flags;
  98 #ifdef HAVE_EBCDIC
  99         char path[MAXPATHLEN];
 100 #endif
 101
 102         Debug( LDAP_DEBUG_ARGS,
 103                 "bdb_db_open: %s\n",
 104                 be->be_suffix[0].bv_val, 0, 0 );
 105
 106 #ifndef BDB_MULTIPLE_SUFFIXES
 107         if ( be->be_suffix[1].bv_val ) {
 108         Debug( LDAP_DEBUG_ANY,
 109                 "bdb_db_open: only one suffix allowed\n", 0, 0, 0 );
 110                 return -1;
 111         }
 112 #endif
 113         /* we should check existance of dbenv_home and db_directory */
 114
 115         rc = db_env_create( &bdb->bi_dbenv, 0 );
 116         if( rc != 0 ) {
 117                 Debug( LDAP_DEBUG_ANY,
 118                         "bdb_db_open: db_env_create failed: %s (%d)\n",
 119                         db_strerror(rc), rc, 0 );
 120                 return rc;
 121         }
 122
 123         flags = DB_INIT_MPOOL | DB_THREAD | DB_CREATE;
 124
 125         if ( !( slapMode & SLAP_TOOL_QUICK ))
 126                 flags |= DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN;
 127
 128         rc = alock_open( &bdb->bi_alock_info, "slapd", bdb->bi_dbenv_home,
 129                 slapMode & SLAP_TOOL_READONLY ?  ALOCK_LOCKED : ALOCK_UNIQUE );
 130         if( rc == ALOCK_RECOVER ) {
 131                 Debug( LDAP_DEBUG_ANY,
 132                         "bdb_db_open: alock_open: recovery required\n", 0, 0, 0 );
 133                 flags |= DB_RECOVER;
 134         } else if( rc == ALOCK_BUSY ) {
 135                 Debug( LDAP_DEBUG_ANY,
 136                    "bdb_db_open: alock_open: database in use\n", 0, 0, 0 );
 137                 return -1;
 138         } else if( rc != ALOCK_CLEAN ) {
 139                 Debug( LDAP_DEBUG_ANY,
 140                    "bdb_db_open: alock_open: database unstable\n", 0, 0, 0 );
 141                 return -1;
 142         }
 143
 144         /* If a key was set, use shared memory for the BDB environment */
 145         if ( bdb->bi_shm_key ) {
 146                 bdb->bi_dbenv->set_shm_key( bdb->bi_dbenv, bdb->bi_shm_key );
 147                 flags |= DB_SYSTEM_MEM;
 148         }
 149
 150         bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0].bv_val );
 151         bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );
 152         bdb->bi_dbenv->set_lk_detect( bdb->bi_dbenv, bdb->bi_lock_detect );
 153
 154         /* One long-lived TXN per thread, two TXNs per write op */
 155         bdb->bi_dbenv->set_tx_max( bdb->bi_dbenv, connection_pool_max * 3 );
 156
 157 #ifdef SLAP_ZONE_ALLOC
 158         if ( bdb->bi_cache.c_maxsize ) {
 159                 bdb->bi_cache.c_zctx = slap_zn_mem_create(
 160                                                                 SLAP_ZONE_INITSIZE,
 161                                                                 SLAP_ZONE_MAXSIZE,
 162                                                                 SLAP_ZONE_DELTA,
 163                                                                 SLAP_ZONE_SIZE);
 164         }
 165 #endif
 166
 167         if ( bdb->bi_idl_cache_max_size ) {
 168                 bdb->bi_idl_tree = NULL;
 169                 ldap_pvt_thread_rdwr_init( &bdb->bi_idl_tree_rwlock );
 170                 ldap_pvt_thread_mutex_init( &bdb->bi_idl_tree_lrulock );
 171                 bdb->bi_idl_cache_size = 0;
 172         }
 173
 174         if( bdb->bi_dbenv_xflags != 0 ) {
 175                 rc = bdb->bi_dbenv->set_flags( bdb->bi_dbenv,
 176                         bdb->bi_dbenv_xflags, 1);
 177                 if( rc != 0 ) {
 178                         Debug( LDAP_DEBUG_ANY,
 179                                 "bdb_db_open: dbenv_set_flags failed: %s (%d)\n",
 180                                 db_strerror(rc), rc, 0 );
 181                         return rc;
 182                 }
 183         }
 184
 185         Debug( LDAP_DEBUG_TRACE,
 186                 "bdb_db_open: dbenv_open(%s)\n",
 187                 bdb->bi_dbenv_home, 0, 0);
 188
 189 #ifdef HAVE_EBCDIC
 190         strcpy( path, bdb->bi_dbenv_home );
 191         __atoe( path );
 192         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 193                 path,
 194                 flags,
 195                 bdb->bi_dbenv_mode );
 196 #else
 197         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 198                 bdb->bi_dbenv_home,
 199                 flags,
 200                 bdb->bi_dbenv_mode );
 201 #endif
 202         if( rc != 0 ) {
 203                 Debug( LDAP_DEBUG_ANY,
 204                         "bdb_db_open: dbenv_open failed: %s (%d)\n",
 205                         db_strerror(rc), rc, 0 );
 206                 return rc;
 207         }
 208         if( flags & DB_RECOVER ) {
 209                 rc = alock_recover (&bdb->bi_alock_info);
 210                 if( rc != 0 ) {
 211                         Debug( LDAP_DEBUG_ANY,
 212                            "bdb_db_open: unable to alock_recover\n", 0, 0, 0 );
 213                         return -1;
 214                 }
 215         }
 216
 217         flags = DB_THREAD | bdb->bi_db_opflags;
 218
 219 #ifdef DB_AUTO_COMMIT
 220         if ( !( slapMode & SLAP_TOOL_QUICK ))
 221                 flags |= DB_AUTO_COMMIT;
 222 #endif
 223
 224         bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
 225                 BDB_INDICES * sizeof(struct bdb_db_info *) );
 226
 227         /* open (and create) main database */
 228         for( i = 0; bdbi_databases[i].name; i++ ) {
 229                 struct bdb_db_info *db;
 230
 231                 db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
 232
 233                 rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
 234                 if( rc != 0 ) {
 235                         Debug( LDAP_DEBUG_ANY,
 236                                 "bdb_db_open: db_create(%s) failed: %s (%d)\n",
 237                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 238                         return rc;
 239                 }
 240
 241                 if( i == BDB_ID2ENTRY ) {
 242                         rc = db->bdi_db->set_pagesize( db->bdi_db,
 243                                 BDB_ID2ENTRY_PAGESIZE );
 244                         if ( slapMode & SLAP_TOOL_READMAIN ) {
 245                                 flags |= DB_RDONLY;
 246                         } else {
 247                                 flags |= DB_CREATE;
 248                         }
 249                 } else {
 250                         rc = db->bdi_db->set_flags( db->bdi_db,
 251                                 DB_DUP | DB_DUPSORT );
 252 #ifndef BDB_HIER
 253                         if ( slapMode & SLAP_TOOL_READONLY ) {
 254                                 flags |= DB_RDONLY;
 255                         } else {
 256                                 flags |= DB_CREATE;
 257                         }
 258 #else
 259                         if ( slapMode & (SLAP_TOOL_READONLY|SLAP_TOOL_READMAIN) ) {
 260                                 flags |= DB_RDONLY;
 261                         } else {
 262                                 flags |= DB_CREATE;
 263                         }
 264 #endif
 265                         rc = db->bdi_db->set_pagesize( db->bdi_db,
 266                                 BDB_PAGESIZE );
 267                 }
 268
 269 #ifdef HAVE_EBCDIC
 270                 strcpy( path, bdbi_databases[i].file );
 271                 __atoe( path );
 272                 rc = DB_OPEN( db->bdi_db,
 273                         path,
 274                 /*      bdbi_databases[i].name, */ NULL,
 275                         bdbi_databases[i].type,
 276                         bdbi_databases[i].flags | flags,
 277                         bdb->bi_dbenv_mode );
 278 #else
 279                 rc = DB_OPEN( db->bdi_db,
 280                         bdbi_databases[i].file,
 281                 /*      bdbi_databases[i].name, */ NULL,
 282                         bdbi_databases[i].type,
 283                         bdbi_databases[i].flags | flags,
 284                         bdb->bi_dbenv_mode );
 285 #endif
 286
 287                 if ( rc != 0 ) {
 288                         char    buf[SLAP_TEXT_BUFLEN];
 289
 290                         snprintf( buf, sizeof(buf), "%s/%s",
 291                                 bdb->bi_dbenv_home, bdbi_databases[i].file );
 292                         Debug( LDAP_DEBUG_ANY,
 293                                 "bdb_db_open: db_open(%s) failed: %s (%d)\n",
 294                                 buf, db_strerror(rc), rc );
 295                         return rc;
 296                 }
 297
 298                 flags &= ~(DB_CREATE | DB_RDONLY);
 299                 db->bdi_name = bdbi_databases[i].name;
 300                 bdb->bi_databases[i] = db;
 301         }
 302
 303         bdb->bi_databases[i] = NULL;
 304         bdb->bi_ndatabases = i;
 305
 306         /* get nextid */
 307         rc = bdb_last_id( be, NULL );
 308         if( rc != 0 ) {
 309                 Debug( LDAP_DEBUG_ANY,
 310                         "bdb_db_open: last_id(%s) failed: %s (%d)\n",
 311                         bdb->bi_dbenv_home, db_strerror(rc), rc );
 312                 return rc;
 313         }
 314
 315         if ( !( slapMode & SLAP_TOOL_QUICK )) {
 316                 XLOCK_ID(bdb->bi_dbenv, &bdb->bi_cache.c_locker);
 317         }
 318
 319         /* If we're in server mode and time-based checkpointing is enabled,
 320          * submit a task to perform periodic checkpoints.
 321          */
 322         if (( slapMode & SLAP_SERVER_MODE ) && bdb->bi_txn_cp &&
 323                 bdb->bi_txn_cp_min )  {
 324                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 325                 ldap_pvt_runqueue_insert( &slapd_rq, bdb->bi_txn_cp_min*60,
 326                         bdb_checkpoint, bdb );
 327                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 328         }
 329
 330         if ( slapMode & SLAP_SERVER_MODE && bdb->bi_db_has_config ) {
 331                 char    buf[SLAP_TEXT_BUFLEN];
 332                 FILE *f = fopen( bdb->bi_db_config_path, "r" );
 333                 struct berval bv;
 334
 335                 if ( f ) {
 336                         while ( fgets( buf, sizeof(buf), f )) {
 337                                 ber_str2bv( buf, 0, 1, &bv );
 338                                 if ( bv.bv_val[bv.bv_len-1] == '\n' ) {
 339                                         bv.bv_len--;
 340                                         bv.bv_val[bv.bv_len] = '\0';
 341                                 }
 342                                 /* shouldn't need this, but ... */
 343                                 if ( bv.bv_val[bv.bv_len-1] == '\r' ) {
 344                                         bv.bv_len--;
 345                                         bv.bv_val[bv.bv_len] = '\0';
 346                                 }
 347                                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 348                         }
 349                         fclose( f );
 350                 } else {
 351                         /* Eh? It disappeared between config and open?? */
 352                         bdb->bi_db_has_config = 0;
 353                 }
 354
 355         }
 356         bdb->bi_db_is_open = 1;
 357
 358         return 0;
 359 }
 360
 361 static int
 362 bdb_db_close( BackendDB *be )
 363 {
 364         int rc;
 365         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 366         struct bdb_db_info *db;
 367         bdb_idl_cache_entry_t *entry, *next_entry;
 368
 369         bdb->bi_db_is_open = 0;
 370
 371         ber_bvarray_free( bdb->bi_db_config );
 372
 373         while( bdb->bi_ndatabases-- ) {
 374                 db = bdb->bi_databases[bdb->bi_ndatabases];
 375                 rc = db->bdi_db->close( db->bdi_db, 0 );
 376                 /* Lower numbered names are not strdup'd */
 377                 if( bdb->bi_ndatabases >= BDB_NDB )
 378                         free( db->bdi_name );
 379                 free( db );
 380         }
 381         free( bdb->bi_databases );
 382         bdb_attr_index_destroy( bdb->bi_attrs );
 383
 384         bdb_cache_release_all (&bdb->bi_cache);
 385
 386         if ( bdb->bi_idl_cache_max_size ) {
 387                 ldap_pvt_thread_rdwr_wlock ( &bdb->bi_idl_tree_rwlock );
 388                 avl_free( bdb->bi_idl_tree, NULL );
 389                 entry = bdb->bi_idl_lru_head;
 390                 while ( entry != NULL ) {
 391                         next_entry = entry->idl_lru_next;
 392                         if ( entry->idl )
 393                                 free( entry->idl );
 394                         free( entry->kstr.bv_val );
 395                         free( entry );
 396                         entry = next_entry;
 397                 }
 398                 ldap_pvt_thread_rdwr_wunlock ( &bdb->bi_idl_tree_rwlock );
 399         }
 400
 401         if ( !( slapMode & SLAP_TOOL_QUICK )) {
 402                 XLOCK_ID_FREE(bdb->bi_dbenv, bdb->bi_cache.c_locker);
 403         }
 404
 405         return 0;
 406 }
 407
 408 static int
 409 bdb_db_destroy( BackendDB *be )
 410 {
 411         int rc;
 412         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 413
 414         /* close db environment */
 415         if( bdb->bi_dbenv ) {
 416                 /* force a checkpoint */
 417                 if ( !( slapMode & SLAP_TOOL_QUICK )) {
 418                         rc = TXN_CHECKPOINT( bdb->bi_dbenv, 0, 0, DB_FORCE );
 419                         if( rc != 0 ) {
 420                                 Debug( LDAP_DEBUG_ANY,
 421                                         "bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
 422                                         db_strerror(rc), rc, 0 );
 423                         }
 424                 }
 425
 426                 rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
 427                 bdb->bi_dbenv = NULL;
 428                 if( rc != 0 ) {
 429                         Debug( LDAP_DEBUG_ANY,
 430                                 "bdb_db_destroy: close failed: %s (%d)\n",
 431                                 db_strerror(rc), rc, 0 );
 432                         return rc;
 433                 }
 434         }
 435
 436         rc = alock_close( &bdb->bi_alock_info );
 437         if( rc != 0 ) {
 438                 Debug( LDAP_DEBUG_ANY,
 439                         "bdb_db_destroy: alock_close failed\n", 0, 0, 0 );
 440                 return -1;
 441         }
 442
 443         if( bdb->bi_dbenv_home ) ch_free( bdb->bi_dbenv_home );
 444         if( bdb->bi_db_config_path ) ch_free( bdb->bi_db_config_path );
 445
 446         ldap_pvt_thread_rdwr_destroy ( &bdb->bi_cache.c_rwlock );
 447         ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.lru_mutex );
 448         ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.c_dntree.bei_kids_mutex );
 449         ldap_pvt_thread_mutex_destroy( &bdb->bi_lastid_mutex );
 450         ldap_pvt_thread_mutex_destroy( &bdb->bi_database_mutex );
 451         if ( bdb->bi_idl_cache_max_size ) {
 452                 ldap_pvt_thread_rdwr_destroy( &bdb->bi_idl_tree_rwlock );
 453                 ldap_pvt_thread_mutex_destroy( &bdb->bi_idl_tree_lrulock );
 454         }
 455
 456         ch_free( bdb );
 457         be->be_private = NULL;
 458
 459         return 0;
 460 }
 461
 462 int
 463 bdb_back_initialize(
 464         BackendInfo     *bi )
 465 {
 466         int rc;
 467
 468         static char *controls[] = {
 469                 LDAP_CONTROL_ASSERT,
 470                 LDAP_CONTROL_MANAGEDSAIT,
 471                 LDAP_CONTROL_NOOP,
 472                 LDAP_CONTROL_PAGEDRESULTS,
 473 #ifdef LDAP_CONTROL_SUBENTRIES
 474                 LDAP_CONTROL_SUBENTRIES,
 475 #endif
 476 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 477                 LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 478 #endif
 479                 NULL
 480         };
 481
 482         /* initialize the underlying database system */
 483         Debug( LDAP_DEBUG_TRACE,
 484                 LDAP_XSTRING(bdb_back_initialize) ": initialize "
 485                 BDB_UCTYPE " backend\n", 0, 0, 0 );
 486
 487         bi->bi_flags |=
 488                 SLAP_BFLAG_INCREMENT |
 489 #ifdef BDB_SUBENTRIES
 490                 SLAP_BFLAG_SUBENTRIES |
 491 #endif
 492                 SLAP_BFLAG_ALIASES |
 493                 SLAP_BFLAG_REFERRALS;
 494
 495         bi->bi_controls = controls;
 496
 497         {       /* version check */
 498                 int major, minor, patch, ver;
 499                 char *version = db_version( &major, &minor, &patch );
 500 #ifdef HAVE_EBCDIC
 501                 char v2[1024];
 502
 503                 /* All our stdio does an ASCII to EBCDIC conversion on
 504                  * the output. Strings from the BDB library are already
 505                  * in EBCDIC; we have to go back and forth...
 506                  */
 507                 strcpy( v2, version );
 508                 __etoa( v2 );
 509                 version = v2;
 510 #endif
 511
 512                 ver = (major << 24) | (minor << 16) | patch;
 513                 if( ver != DB_VERSION_FULL ) {
 514                         /* fail if a versions don't match */
 515                         Debug( LDAP_DEBUG_ANY,
 516                                 LDAP_XSTRING(bdb_back_initialize) ": "
 517                                 "BDB library version mismatch:"
 518                                 " expected " DB_VERSION_STRING ","
 519                                 " got %s\n", version, 0, 0 );
 520                         return -1;
 521                 }
 522
 523                 Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_back_initialize)
 524                         ": %s\n", version, 0, 0 );
 525         }
 526
 527         db_env_set_func_free( ber_memfree );
 528         db_env_set_func_malloc( (db_malloc *)ber_memalloc );
 529         db_env_set_func_realloc( (db_realloc *)ber_memrealloc );
 530 #ifndef NO_THREAD
 531         /* This is a no-op on a NO_THREAD build. Leave the default
 532          * alone so that BDB will sleep on interprocess conflicts.
 533          */
 534         db_env_set_func_yield( ldap_pvt_thread_yield );
 535 #endif
 536
 537         bi->bi_open = 0;
 538         bi->bi_close = 0;
 539         bi->bi_config = 0;
 540         bi->bi_destroy = 0;
 541
 542         bi->bi_db_init = bdb_db_init;
 543         bi->bi_db_config = config_generic_wrapper;
 544         bi->bi_db_open = bdb_db_open;
 545         bi->bi_db_close = bdb_db_close;
 546         bi->bi_db_destroy = bdb_db_destroy;
 547
 548         bi->bi_op_add = bdb_add;
 549         bi->bi_op_bind = bdb_bind;
 550         bi->bi_op_compare = bdb_compare;
 551         bi->bi_op_delete = bdb_delete;
 552         bi->bi_op_modify = bdb_modify;
 553         bi->bi_op_modrdn = bdb_modrdn;
 554         bi->bi_op_search = bdb_search;
 555
 556         bi->bi_op_unbind = 0;
 557
 558         bi->bi_extended = bdb_extended;
 559
 560         bi->bi_chk_referrals = bdb_referrals;
 561         bi->bi_operational = bdb_operational;
 562         bi->bi_has_subordinates = bdb_hasSubordinates;
 563         bi->bi_entry_release_rw = bdb_entry_release;
 564         bi->bi_entry_get_rw = bdb_entry_get;
 565
 566         /*
 567          * hooks for slap tools
 568          */
 569         bi->bi_tool_entry_open = bdb_tool_entry_open;
 570         bi->bi_tool_entry_close = bdb_tool_entry_close;
 571         bi->bi_tool_entry_first = bdb_tool_entry_next;
 572         bi->bi_tool_entry_next = bdb_tool_entry_next;
 573         bi->bi_tool_entry_get = bdb_tool_entry_get;
 574         bi->bi_tool_entry_put = bdb_tool_entry_put;
 575         bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
 576         bi->bi_tool_sync = 0;
 577         bi->bi_tool_dn2id_get = bdb_tool_dn2id_get;
 578         bi->bi_tool_id2entry_get = bdb_tool_id2entry_get;
 579         bi->bi_tool_entry_modify = bdb_tool_entry_modify;
 580
 581         bi->bi_connection_init = 0;
 582         bi->bi_connection_destroy = 0;
 583
 584         rc = bdb_back_init_cf( bi );
 585
 586         return rc;
 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