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 2000-2004 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 #if 0
  45 static int
  46 bdb_open( BackendInfo *bi )
  47 {
  48         return 0;
  49 }
  50
  51 static int
  52 bdb_destroy( BackendInfo *bi )
  53 {
  54         return 0;
  55 }
  56
  57 static int
  58 bdb_close( BackendInfo *bi )
  59 {
  60         /* terminate the underlying database system */
  61         return 0;
  62 }
  63 #endif
  64
  65 static int
  66 bdb_db_init( BackendDB *be )
  67 {
  68         struct bdb_info *bdb;
  69
  70         Debug( LDAP_DEBUG_ANY,
  71                 LDAP_XSTRING(bdb_db_init) ": Initializing "
  72                 BDB_UCTYPE " database\n", 0, 0, 0 );
  73
  74         /* allocate backend-database-specific stuff */
  75         bdb = (struct bdb_info *) ch_calloc( 1, sizeof(struct bdb_info) );
  76
  77         /* DBEnv parameters */
  78         bdb->bi_dbenv_home = ch_strdup( SLAPD_DEFAULT_DB_DIR );
  79         bdb->bi_dbenv_xflags = 0;
  80         bdb->bi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
  81
  82         bdb->bi_cache.c_maxsize = DEFAULT_CACHE_SIZE;
  83
  84         bdb->bi_lock_detect = DB_LOCK_DEFAULT;
  85         bdb->bi_search_stack_depth = DEFAULT_SEARCH_STACK_DEPTH;
  86         bdb->bi_search_stack = NULL;
  87
  88 #ifdef BDB_PSEARCH
  89         LDAP_LIST_INIT (&bdb->bi_psearch_list);
  90         ldap_pvt_thread_rdwr_init ( &bdb->bi_pslist_rwlock );
  91 #endif
  92
  93         ldap_pvt_thread_mutex_init( &bdb->bi_database_mutex );
  94         ldap_pvt_thread_mutex_init( &bdb->bi_lastid_mutex );
  95         ldap_pvt_thread_mutex_init( &bdb->bi_cache.lru_mutex );
  96         ldap_pvt_thread_mutex_init( &bdb->bi_cache.c_dntree.bei_kids_mutex );
  97         ldap_pvt_thread_rdwr_init ( &bdb->bi_cache.c_rwlock );
  98
  99         be->be_private = bdb;
 100
 101         return 0;
 102 }
 103
 104 int
 105 bdb_bt_compare(
 106         DB *db,
 107         const DBT *usrkey,
 108         const DBT *curkey )
 109 {
 110         unsigned char *u, *c;
 111         int i, x;
 112
 113         u = usrkey->data;
 114         c = curkey->data;
 115
 116 #ifdef WORDS_BIGENDIAN
 117         for( i = 0; i < (int)sizeof(ID); i++)
 118 #else
 119         for( i = sizeof(ID)-1; i >= 0; i--)
 120 #endif
 121         {
 122                 x = u[i] - c[i];
 123                 if( x ) return x;
 124         }
 125
 126         return 0;
 127 }
 128
 129 static void *
 130 bdb_checkpoint( void *ctx, void *arg )
 131 {
 132         struct re_s *rtask = arg;
 133         struct bdb_info *bdb = rtask->arg;
 134
 135         TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte,
 136                 bdb->bi_txn_cp_min, 0 );
 137         return NULL;
 138 }
 139
 140 static int
 141 bdb_db_open( BackendDB *be )
 142 {
 143         int rc, i;
 144         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 145         u_int32_t flags;
 146 #ifdef HAVE_EBCDIC
 147         char path[MAXPATHLEN];
 148 #endif
 149
 150         Debug( LDAP_DEBUG_ARGS,
 151                 "bdb_db_open: %s\n",
 152                 be->be_suffix[0].bv_val, 0, 0 );
 153
 154 #ifndef BDB_MULTIPLE_SUFFIXES
 155         if ( be->be_suffix[1].bv_val ) {
 156         Debug( LDAP_DEBUG_ANY,
 157                 "bdb_db_open: only one suffix allowed\n", 0, 0, 0 );
 158                 return -1;
 159         }
 160 #endif
 161         /* we should check existance of dbenv_home and db_directory */
 162
 163         rc = db_env_create( &bdb->bi_dbenv, 0 );
 164         if( rc != 0 ) {
 165                 Debug( LDAP_DEBUG_ANY,
 166                         "bdb_db_open: db_env_create failed: %s (%d)\n",
 167                         db_strerror(rc), rc, 0 );
 168                 return rc;
 169         }
 170
 171         flags = DB_INIT_MPOOL | DB_THREAD | DB_CREATE
 172                 | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN;
 173
 174 #if 0
 175         /* Never do automatic recovery, must perform it manually.
 176          * Otherwise restarting with gentlehup will corrupt the
 177          * database.
 178          */
 179         if( !(slapMode & SLAP_TOOL_MODE) ) flags |= DB_RECOVER;
 180 #endif
 181
 182         /* If a key was set, use shared memory for the BDB environment */
 183         if ( bdb->bi_shm_key ) {
 184                 bdb->bi_dbenv->set_shm_key( bdb->bi_dbenv, bdb->bi_shm_key );
 185                 flags |= DB_SYSTEM_MEM;
 186         }
 187
 188         bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0].bv_val );
 189         bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );
 190         bdb->bi_dbenv->set_lk_detect( bdb->bi_dbenv, bdb->bi_lock_detect );
 191
 192         /* One long-lived TXN per thread, two TXNs per write op */
 193         bdb->bi_dbenv->set_tx_max( bdb->bi_dbenv, connection_pool_max * 3 );
 194
 195 #ifdef SLAP_ZONE_ALLOC
 196         if ( bdb->bi_cache.c_maxsize ) {
 197                 bdb->bi_cache.c_zctx = slap_zn_mem_create(
 198                                                                 SLAP_ZONE_INITSIZE,
 199                                                                 SLAP_ZONE_MAXSIZE,
 200                                                                 SLAP_ZONE_DELTA,
 201                                                                 SLAP_ZONE_SIZE);
 202         }
 203 #endif
 204
 205         if ( bdb->bi_idl_cache_max_size ) {
 206                 bdb->bi_idl_tree = NULL;
 207                 ldap_pvt_thread_rdwr_init( &bdb->bi_idl_tree_rwlock );
 208                 ldap_pvt_thread_mutex_init( &bdb->bi_idl_tree_lrulock );
 209                 bdb->bi_idl_cache_size = 0;
 210         }
 211
 212 #ifdef BDB_SUBDIRS
 213         {
 214                 char dir[MAXPATHLEN], *ptr;
 215
 216                 if (bdb->bi_dbenv_home[0] == '.') {
 217                         /* If home is a relative path, relative subdirs
 218                          * are just concat'd by BDB. We don't want the
 219                          * path to be concat'd twice, e.g.
 220                          * ./test-db/./test-db/tmp
 221                          */
 222                         ptr = dir;
 223                 } else {
 224                         ptr = lutil_strcopy( dir, bdb->bi_dbenv_home );
 225                         *ptr++ = LDAP_DIRSEP[0];
 226 #ifdef HAVE_EBCDIC
 227                         __atoe( dir );
 228 #endif
 229                 }
 230
 231                 strcpy( ptr, BDB_TMP_SUBDIR );
 232 #ifdef HAVE_EBCDIC
 233                 __atoe( ptr );
 234 #endif
 235                 rc = bdb->bi_dbenv->set_tmp_dir( bdb->bi_dbenv, dir );
 236                 if( rc != 0 ) {
 237                         Debug( LDAP_DEBUG_ANY,
 238                                 "bdb_db_open: set_tmp_dir(%s) failed: %s (%d)\n",
 239                                 dir, db_strerror(rc), rc );
 240                         return rc;
 241                 }
 242
 243                 strcpy( ptr, BDB_LG_SUBDIR );
 244 #ifdef HAVE_EBCDIC
 245                 __atoe( ptr );
 246 #endif
 247                 rc = bdb->bi_dbenv->set_lg_dir( bdb->bi_dbenv, dir );
 248                 if( rc != 0 ) {
 249                         Debug( LDAP_DEBUG_ANY,
 250                                 "bdb_db_open: set_lg_dir(%s) failed: %s (%d)\n",
 251                                 dir, db_strerror(rc), rc );
 252                         return rc;
 253                 }
 254
 255                 strcpy( ptr, BDB_DATA_SUBDIR );
 256 #ifdef HAVE_EBCDIC
 257                 __atoe( ptr );
 258 #endif
 259                 rc = bdb->bi_dbenv->set_data_dir( bdb->bi_dbenv, dir );
 260                 if( rc != 0 ) {
 261                         Debug( LDAP_DEBUG_ANY,
 262                                 "bdb_db_open: set_data_dir(%s) failed: %s (%d)\n",
 263                                 dir, db_strerror(rc), rc );
 264                         return rc;
 265                 }
 266         }
 267 #endif
 268
 269         if( bdb->bi_dbenv_xflags != 0 ) {
 270                 rc = bdb->bi_dbenv->set_flags( bdb->bi_dbenv,
 271                         bdb->bi_dbenv_xflags, 1);
 272                 if( rc != 0 ) {
 273                         Debug( LDAP_DEBUG_ANY,
 274                                 "bdb_db_open: dbenv_set_flags failed: %s (%d)\n",
 275                                 db_strerror(rc), rc, 0 );
 276                         return rc;
 277                 }
 278         }
 279
 280         Debug( LDAP_DEBUG_TRACE,
 281                 "bdb_db_open: dbenv_open(%s)\n",
 282                 bdb->bi_dbenv_home, 0, 0);
 283
 284 #ifdef HAVE_EBCDIC
 285         strcpy( path, bdb->bi_dbenv_home );
 286         __atoe( path );
 287         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 288                 path,
 289                 flags,
 290                 bdb->bi_dbenv_mode );
 291 #else
 292         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 293                 bdb->bi_dbenv_home,
 294                 flags,
 295                 bdb->bi_dbenv_mode );
 296 #endif
 297         if( rc != 0 ) {
 298                 Debug( LDAP_DEBUG_ANY,
 299                         "bdb_db_open: dbenv_open failed: %s (%d)\n",
 300                         db_strerror(rc), rc, 0 );
 301                 return rc;
 302         }
 303
 304         flags = DB_THREAD | bdb->bi_db_opflags;
 305
 306         bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
 307                 BDB_INDICES * sizeof(struct bdb_db_info *) );
 308
 309         /* open (and create) main database */
 310         for( i = 0; bdbi_databases[i].name; i++ ) {
 311                 struct bdb_db_info *db;
 312
 313                 db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
 314
 315                 rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
 316                 if( rc != 0 ) {
 317                         Debug( LDAP_DEBUG_ANY,
 318                                 "bdb_db_open: db_create(%s) failed: %s (%d)\n",
 319                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 320                         return rc;
 321                 }
 322
 323                 if( i == BDB_ID2ENTRY ) {
 324 #if 0
 325                         rc = db->bdi_db->set_bt_compare( db->bdi_db,
 326                                 bdb_bt_compare );
 327 #endif
 328                         rc = db->bdi_db->set_pagesize( db->bdi_db,
 329                                 BDB_ID2ENTRY_PAGESIZE );
 330                         if ( slapMode & SLAP_TOOL_READMAIN ) {
 331                                 flags |= DB_RDONLY;
 332                         } else {
 333                                 flags |= DB_CREATE;
 334                         }
 335                 } else {
 336                         rc = db->bdi_db->set_flags( db->bdi_db,
 337                                 DB_DUP | DB_DUPSORT );
 338 #ifndef BDB_HIER
 339 #if 0
 340                         rc = db->bdi_db->set_dup_compare( db->bdi_db,
 341                                 bdb_bt_compare );
 342 #endif
 343                         if ( slapMode & SLAP_TOOL_READONLY ) {
 344                                 flags |= DB_RDONLY;
 345                         } else {
 346                                 flags |= DB_CREATE;
 347                         }
 348 #else
 349                         rc = db->bdi_db->set_dup_compare( db->bdi_db,
 350                                 bdb_dup_compare );
 351                         rc = db->bdi_db->set_bt_compare( db->bdi_db,
 352                                 bdb_bt_compare );
 353                         if ( slapMode & (SLAP_TOOL_READONLY|SLAP_TOOL_READMAIN) ) {
 354                                 flags |= DB_RDONLY;
 355                         } else {
 356                                 flags |= DB_CREATE;
 357                         }
 358 #endif
 359                         rc = db->bdi_db->set_pagesize( db->bdi_db,
 360                                 BDB_PAGESIZE );
 361                 }
 362
 363 #ifdef HAVE_EBCDIC
 364                 strcpy( path, bdbi_databases[i].file );
 365                 __atoe( path );
 366                 rc = DB_OPEN( db->bdi_db,
 367                         path,
 368                 /*      bdbi_databases[i].name, */ NULL,
 369                         bdbi_databases[i].type,
 370                         bdbi_databases[i].flags | flags,
 371                         bdb->bi_dbenv_mode );
 372 #else
 373                 rc = DB_OPEN( db->bdi_db,
 374                         bdbi_databases[i].file,
 375                 /*      bdbi_databases[i].name, */ NULL,
 376                         bdbi_databases[i].type,
 377                         bdbi_databases[i].flags | flags,
 378                         bdb->bi_dbenv_mode );
 379 #endif
 380
 381                 if( rc != 0 ) {
 382                         Debug( LDAP_DEBUG_ANY,
 383                                 "bdb_db_open: db_open(%s) failed: %s (%d)\n",
 384                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 385                         return rc;
 386                 }
 387
 388                 flags &= ~(DB_CREATE | DB_RDONLY);
 389                 db->bdi_name = bdbi_databases[i].name;
 390                 bdb->bi_databases[i] = db;
 391         }
 392
 393         bdb->bi_databases[i] = NULL;
 394         bdb->bi_ndatabases = i;
 395
 396         /* get nextid */
 397         rc = bdb_last_id( be, NULL );
 398         if( rc != 0 ) {
 399                 Debug( LDAP_DEBUG_ANY,
 400                         "bdb_db_open: last_id(%s) failed: %s (%d)\n",
 401                         bdb->bi_dbenv_home, db_strerror(rc), rc );
 402                 return rc;
 403         }
 404
 405         XLOCK_ID(bdb->bi_dbenv, &bdb->bi_cache.c_locker);
 406
 407         /* If we're in server mode and time-based checkpointing is enabled,
 408          * submit a task to perform periodic checkpoints.
 409          */
 410         if ( slapMode & SLAP_SERVER_MODE && bdb->bi_txn_cp &&
 411                 bdb->bi_txn_cp_min )  {
 412                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 413                 ldap_pvt_runqueue_insert( &slapd_rq, bdb->bi_txn_cp_min*60,
 414                         bdb_checkpoint, bdb );
 415                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 416         }
 417
 418         /* <insert> open (and create) index databases */
 419         return 0;
 420 }
 421
 422 static int
 423 bdb_db_close( BackendDB *be )
 424 {
 425         int rc;
 426         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 427         struct bdb_db_info *db;
 428         bdb_idl_cache_entry_t *entry, *next_entry;
 429
 430         while( bdb->bi_ndatabases-- ) {
 431                 db = bdb->bi_databases[bdb->bi_ndatabases];
 432                 rc = db->bdi_db->close( db->bdi_db, 0 );
 433                 /* Lower numbered names are not strdup'd */
 434                 if( bdb->bi_ndatabases >= BDB_NDB )
 435                         free( db->bdi_name );
 436                 free( db );
 437         }
 438         free( bdb->bi_databases );
 439         bdb_attr_index_destroy( bdb->bi_attrs );
 440
 441         bdb_cache_release_all (&bdb->bi_cache);
 442
 443         if ( bdb->bi_idl_cache_max_size ) {
 444                 ldap_pvt_thread_rdwr_wlock ( &bdb->bi_idl_tree_rwlock );
 445                 avl_free( bdb->bi_idl_tree, NULL );
 446                 entry = bdb->bi_idl_lru_head;
 447                 while ( entry != NULL ) {
 448                         next_entry = entry->idl_lru_next;
 449                         if ( entry->idl )
 450                                 free( entry->idl );
 451                         free( entry->kstr.bv_val );
 452                         free( entry );
 453                         entry = next_entry;
 454                 }
 455                 ldap_pvt_thread_rdwr_wunlock ( &bdb->bi_idl_tree_rwlock );
 456         }
 457
 458         XLOCK_ID_FREE(bdb->bi_dbenv, bdb->bi_cache.c_locker);
 459
 460         return 0;
 461 }
 462
 463 static int
 464 bdb_db_destroy( BackendDB *be )
 465 {
 466         int rc;
 467         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 468         Operation *ps = NULL;
 469         Operation *psn = NULL;
 470         void *saved_tmpmemctx = NULL;
 471
 472         /* close db environment */
 473         if( bdb->bi_dbenv ) {
 474                 /* force a checkpoint */
 475                 rc = TXN_CHECKPOINT( bdb->bi_dbenv, 0, 0, DB_FORCE );
 476                 if( rc != 0 ) {
 477                         Debug( LDAP_DEBUG_ANY,
 478                                 "bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
 479                                 db_strerror(rc), rc, 0 );
 480                 }
 481
 482                 rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
 483                 bdb->bi_dbenv = NULL;
 484                 if( rc != 0 ) {
 485                         Debug( LDAP_DEBUG_ANY,
 486                                 "bdb_db_destroy: close failed: %s (%d)\n",
 487                                 db_strerror(rc), rc, 0 );
 488                         return rc;
 489                 }
 490         }
 491
 492         if( bdb->bi_dbenv_home ) ch_free( bdb->bi_dbenv_home );
 493
 494         ldap_pvt_thread_rdwr_destroy ( &bdb->bi_cache.c_rwlock );
 495         ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.lru_mutex );
 496         ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.c_dntree.bei_kids_mutex );
 497         ldap_pvt_thread_mutex_destroy( &bdb->bi_lastid_mutex );
 498         ldap_pvt_thread_mutex_destroy( &bdb->bi_database_mutex );
 499         if ( bdb->bi_idl_cache_max_size ) {
 500                 ldap_pvt_thread_rdwr_destroy( &bdb->bi_idl_tree_rwlock );
 501                 ldap_pvt_thread_mutex_destroy( &bdb->bi_idl_tree_lrulock );
 502         }
 503
 504 #ifdef BDB_PSEARCH
 505         ldap_pvt_thread_rdwr_destroy ( &bdb->bi_pslist_rwlock );
 506         ps = LDAP_LIST_FIRST( &bdb->bi_psearch_list );
 507
 508         if ( ps ) {
 509                 psn = LDAP_LIST_NEXT( ps, o_ps_link );
 510
 511                 saved_tmpmemctx = ps->o_tmpmemctx;
 512
 513                 if (!BER_BVISNULL(&ps->o_req_dn)) {
 514                         slap_sl_free( ps->o_req_dn.bv_val, ps->o_tmpmemctx );
 515                 }
 516                 if (!BER_BVISNULL(&ps->o_req_ndn)) {
 517                         slap_sl_free( ps->o_req_ndn.bv_val, ps->o_tmpmemctx );
 518                 }
 519                 if (!BER_BVISNULL(&ps->ors_filterstr)) {
 520                         slap_sl_free(ps->ors_filterstr.bv_val, ps->o_tmpmemctx);
 521                 }
 522                 if (ps->ors_filter != NULL) {
 523                         filter_free_x(ps, ps->ors_filter);
 524                 }
 525                 if ( ps->ors_attrs != NULL) {
 526                         ps->o_tmpfree(ps->ors_attrs, ps->o_tmpmemctx);
 527                 }
 528
 529                 slap_op_free( ps );
 530
 531                 if ( saved_tmpmemctx ) {
 532                         slap_sl_mem_destroy( NULL, saved_tmpmemctx );
 533                 }
 534         }
 535
 536         while ( psn ) {
 537                 ps = psn;
 538                 psn = LDAP_LIST_NEXT( ps, o_ps_link );
 539
 540                 saved_tmpmemctx = ps->o_tmpmemctx;
 541
 542                 if (!BER_BVISNULL(&ps->o_req_dn)) {
 543                         slap_sl_free( ps->o_req_dn.bv_val, ps->o_tmpmemctx );
 544                 }
 545                 if (!BER_BVISNULL(&ps->o_req_ndn)) {
 546                         slap_sl_free( ps->o_req_ndn.bv_val, ps->o_tmpmemctx );
 547                 }
 548                 if (!BER_BVISNULL(&ps->ors_filterstr)) {
 549                         slap_sl_free(ps->ors_filterstr.bv_val, ps->o_tmpmemctx);
 550                 }
 551                 if (ps->ors_filter != NULL) {
 552                         filter_free_x(ps, ps->ors_filter);
 553                 }
 554                 if ( ps->ors_attrs != NULL) {
 555                         ps->o_tmpfree(ps->ors_attrs, ps->o_tmpmemctx);
 556                 }
 557
 558                 slap_op_free( ps );
 559
 560                 if ( saved_tmpmemctx ) {
 561                         slap_sl_mem_destroy( NULL, saved_tmpmemctx );
 562                 }
 563         }
 564 #endif
 565
 566         ch_free( bdb );
 567         be->be_private = NULL;
 568
 569         return 0;
 570 }
 571
 572 int
 573 bdb_back_initialize(
 574         BackendInfo     *bi )
 575 {
 576         static char *controls[] = {
 577                 LDAP_CONTROL_ASSERT,
 578                 LDAP_CONTROL_MANAGEDSAIT,
 579                 LDAP_CONTROL_NOOP,
 580                 LDAP_CONTROL_PAGEDRESULTS,
 581 #ifdef LDAP_CONTROL_SUBENTRIES
 582                 LDAP_CONTROL_SUBENTRIES,
 583 #endif
 584                 LDAP_CONTROL_VALUESRETURNFILTER,
 585 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 586                 LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 587 #endif
 588                 NULL
 589         };
 590
 591         /* initialize the underlying database system */
 592         Debug( LDAP_DEBUG_TRACE,
 593                 LDAP_XSTRING(bdb_back_initialize) ": initialize "
 594                 BDB_UCTYPE " backend\n", 0, 0, 0 );
 595
 596         bi->bi_flags |=
 597                 SLAP_BFLAG_INCREMENT |
 598 #ifdef BDB_SUBENTRIES
 599                 SLAP_BFLAG_SUBENTRIES |
 600 #endif
 601                 SLAP_BFLAG_ALIASES |
 602                 SLAP_BFLAG_REFERRALS;
 603
 604         bi->bi_controls = controls;
 605
 606         {       /* version check */
 607                 int major, minor, patch, ver;
 608                 char *version = db_version( &major, &minor, &patch );
 609 #ifdef HAVE_EBCDIC
 610                 char v2[1024];
 611
 612                 /* All our stdio does an ASCII to EBCDIC conversion on
 613                  * the output. Strings from the BDB library are already
 614                  * in EBCDIC; we have to go back and forth...
 615                  */
 616                 strcpy( v2, version );
 617                 __etoa( v2 );
 618                 version = v2;
 619 #endif
 620
 621                 ver = (major << 24) | (minor << 16) | patch;
 622                 if( ver < DB_VERSION_FULL )
 623                 {
 624                         Debug( LDAP_DEBUG_ANY,
 625                                 LDAP_XSTRING(bdb_back_initialize) ": "
 626                                 "BDB library version mismatch:"
 627                                 " expected " DB_VERSION_STRING ","
 628                                 " got %s\n", version, 0, 0 );
 629                 }
 630
 631                 Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(bdb_back_initialize)
 632                         ": %s\n", version, 0, 0 );
 633         }
 634
 635         db_env_set_func_free( ber_memfree );
 636         db_env_set_func_malloc( (db_malloc *)ber_memalloc );
 637         db_env_set_func_realloc( (db_realloc *)ber_memrealloc );
 638 #ifndef NO_THREAD
 639         /* This is a no-op on a NO_THREAD build. Leave the default
 640          * alone so that BDB will sleep on interprocess conflicts.
 641          */
 642         db_env_set_func_yield( ldap_pvt_thread_yield );
 643 #endif
 644
 645         {
 646                 static char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
 647
 648                 bdb_uuid.bv_len = lutil_uuidstr( uuidbuf, sizeof( uuidbuf ));
 649                 bdb_uuid.bv_val = uuidbuf;
 650         }
 651
 652         bi->bi_open = 0;
 653         bi->bi_close = 0;
 654         bi->bi_config = 0;
 655         bi->bi_destroy = 0;
 656
 657         bi->bi_db_init = bdb_db_init;
 658         bi->bi_db_config = bdb_db_config;
 659         bi->bi_db_open = bdb_db_open;
 660         bi->bi_db_close = bdb_db_close;
 661         bi->bi_db_destroy = bdb_db_destroy;
 662
 663         bi->bi_op_add = bdb_add;
 664         bi->bi_op_bind = bdb_bind;
 665         bi->bi_op_compare = bdb_compare;
 666         bi->bi_op_delete = bdb_delete;
 667         bi->bi_op_modify = bdb_modify;
 668         bi->bi_op_modrdn = bdb_modrdn;
 669         bi->bi_op_search = bdb_search;
 670
 671         bi->bi_op_unbind = 0;
 672
 673 #if 0   /* DELETE ME */
 674         bi->bi_op_abandon = bdb_abandon;
 675         bi->bi_op_cancel = bdb_cancel;
 676 #endif
 677
 678         bi->bi_extended = bdb_extended;
 679
 680         bi->bi_chk_referrals = bdb_referrals;
 681         bi->bi_operational = bdb_operational;
 682         bi->bi_has_subordinates = bdb_hasSubordinates;
 683         bi->bi_entry_release_rw = bdb_entry_release;
 684         bi->bi_entry_get_rw = bdb_entry_get;
 685
 686         /*
 687          * hooks for slap tools
 688          */
 689         bi->bi_tool_entry_open = bdb_tool_entry_open;
 690         bi->bi_tool_entry_close = bdb_tool_entry_close;
 691         bi->bi_tool_entry_first = bdb_tool_entry_next;
 692         bi->bi_tool_entry_next = bdb_tool_entry_next;
 693         bi->bi_tool_entry_get = bdb_tool_entry_get;
 694         bi->bi_tool_entry_put = bdb_tool_entry_put;
 695         bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
 696         bi->bi_tool_sync = 0;
 697         bi->bi_tool_dn2id_get = bdb_tool_dn2id_get;
 698         bi->bi_tool_id2entry_get = bdb_tool_id2entry_get;
 699         bi->bi_tool_entry_modify = bdb_tool_entry_modify;
 700
 701         bi->bi_connection_init = 0;
 702         bi->bi_connection_destroy = 0;
 703
 704         return 0;
 705 }
 706
 707 #if     (SLAPD_BDB == SLAPD_MOD_DYNAMIC && !defined(BDB_HIER)) || \
 708         (SLAPD_HDB == SLAPD_MOD_DYNAMIC && defined(BDB_HIER))
 709
 710 /* conditionally define the init_module() function */
 711 #ifdef BDB_HIER
 712 SLAP_BACKEND_INIT_MODULE( hdb )
 713 #else /* !BDB_HIER */
 714 SLAP_BACKEND_INIT_MODULE( bdb )
 715 #endif /* !BDB_HIER */
 716
 717 #endif /* SLAPD_[BH]DB == SLAPD_MOD_DYNAMIC */
 718