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

   1 /* config.c - bdb backend configuration file routine */
   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
  22 #include "back-bdb.h"
  23
  24 #include "config.h"
  25
  26 #include "lutil.h"
  27 #include "ldap_rq.h"
  28
  29 #ifdef DB_DIRTY_READ
  30 #       define  SLAP_BDB_ALLOW_DIRTY_READ
  31 #endif
  32
  33 static ObjectClass *bdb_oc;
  34
  35 static ConfigDriver bdb_cf_oc, bdb_cf_gen;
  36
  37 enum {
  38         BDB_CHKPT = 1,
  39         BDB_CONFIG,
  40         BDB_DIRECTORY,
  41         BDB_NOSYNC,
  42         BDB_DIRTYR,
  43         BDB_INDEX,
  44         BDB_LOCKD,
  45         BDB_SSTACK
  46 };
  47
  48 static ConfigTable bdbcfg[] = {
  49         { "", "", 0, 0, 0, ARG_MAGIC,
  50                 bdb_cf_oc, NULL, NULL, NULL },
  51         { "directory", "dir", 2, 2, 0, ARG_STRING|ARG_MAGIC|BDB_DIRECTORY,
  52                 bdb_cf_gen, "( OLcfgDbAt:0.1 NAME 'olcDbDirectory' "
  53                         "DESC 'Directory for database content' "
  54                         "EQUALITY caseIgnoreMatch "
  55                         "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
  56         { "cachesize", "size", 2, 2, 0, ARG_INT|ARG_OFFSET,
  57                 (void *)offsetof(struct bdb_info, bi_cache.c_maxsize),
  58                 "( OLcfgDbAt:1.1 NAME 'olcDbCacheSize' "
  59                         "DESC 'Entry cache size in entries' "
  60                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  61         { "checkpoint", "kbyte> <min", 3, 3, 0, ARG_MAGIC|BDB_CHKPT,
  62                 bdb_cf_gen, "( OLcfgDbAt:1.2 NAME 'olcDbCheckpoint' "
  63                         "DESC 'Database checkpoint interval in kbytes and minutes' "
  64                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",NULL, NULL },
  65         { "dbconfig", "DB_CONFIG setting", 3, 0, 0, ARG_MAGIC|BDB_CONFIG,
  66                 bdb_cf_gen, "( OLcfgDbAt:1.3 NAME 'olcDbConfig' "
  67                         "DESC 'BerkeleyDB DB_CONFIG configuration directives' "
  68                         "SYNTAX OMsDirectoryString )",NULL, NULL },
  69         { "dbnosync", NULL, 1, 2, 0, ARG_ON_OFF|ARG_MAGIC|BDB_NOSYNC,
  70                 bdb_cf_gen, "( OLcfgDbAt:1.4 NAME 'olcDbNoSync' "
  71                         "DESC 'Disable synchronous database writes' "
  72                         "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  73         { "dirtyread", NULL, 1, 2, 0,
  74 #ifdef SLAP_BDB_ALLOW_DIRTY_READ
  75                 ARG_ON_OFF|ARG_MAGIC|BDB_DIRTYR, bdb_cf_gen,
  76 #else
  77                 ARG_IGNORED, NULL,
  78 #endif
  79                 "( OLcfgDbAt:1.5 NAME 'olcDbDirtyRead' "
  80                 "DESC 'Allow reads of uncommitted data' "
  81                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  82         { "idlcachesize", "size", 2, 2, 0, ARG_INT|ARG_OFFSET,
  83                 (void *)offsetof(struct bdb_info,bi_idl_cache_max_size),
  84                 "( OLcfgDbAt:1.6 NAME 'olcDbIDLcacheSize' "
  85                 "DESC 'IDL cache size in IDLs' "
  86                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  87         { "index", "attr> <[pres,eq,approx,sub]", 2, 3, 0, ARG_MAGIC|BDB_INDEX,
  88                 bdb_cf_gen, "( OLcfgDbAt:0.2 NAME 'olcDbIndex' "
  89                 "DESC 'Attribute index parameters' "
  90                 "EQUALITY caseIgnoreMatch "
  91                 "SYNTAX OMsDirectoryString )", NULL, NULL },
  92         { "linearindex", NULL, 1, 2, 0, ARG_ON_OFF|ARG_OFFSET,
  93                 (void *)offsetof(struct bdb_info, bi_linear_index),
  94                 "( OLcfgDbAt:1.7 NAME 'olcDbLinearIndex' "
  95                 "DESC 'Index attributes one at a time' "
  96                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  97         { "lockdetect", "policy", 2, 2, 0, ARG_MAGIC|BDB_LOCKD,
  98                 bdb_cf_gen, "( OLcfgDbAt:1.8 NAME 'olcDbLockDetect' "
  99                 "DESC 'Deadlock detection algorithm' "
 100                 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
 101         { "mode", "mode", 2, 2, 0, ARG_INT|ARG_OFFSET,
 102                 (void *)offsetof(struct bdb_info, bi_dbenv_mode),
 103                 "( OLcfgDbAt:0.3 NAME 'olcDbMode' "
 104                 "DESC 'Unix permissions of database files' "
 105                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 106         { "searchstack", "depth", 2, 2, 0, ARG_INT|ARG_MAGIC|BDB_SSTACK,
 107                 bdb_cf_gen, "( OLcfgDbAt:1.9 NAME 'olcDbSearchStack' "
 108                 "DESC 'Depth of search stack in IDLs' "
 109                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 110         { "shm_key", "key", 2, 2, 0, ARG_INT|ARG_OFFSET,
 111                 (void *)offsetof(struct bdb_info, bi_shm_key),
 112                 "( OLcfgDbAt:1.10 NAME 'olcDbShmKey' "
 113                 "DESC 'Key for shared memory region' "
 114                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 115         { NULL, NULL, 0, 0, 0, ARG_IGNORED,
 116                 NULL, NULL, NULL, NULL }
 117 };
 118
 119 static ConfigOCs bdbocs[] = {
 120         { "( OLcfgDbOc:1.1 "
 121                 "NAME 'olcBdbConfig' "
 122                 "DESC 'BDB backend configuration' "
 123                 "SUP olcDatabaseConfig "
 124                 "MUST olcDbDirectory "
 125                 "MAY ( olcDbCacheSize $ olcDbCheckpoint $ olcDbConfig $ "
 126                 "olcDbNoSync $ olcDbDirtyRead $ olcDbIDLcacheSize $ "
 127                 "olcDbIndex $ olcDbLinearIndex $ olcDbLockDetect $ "
 128                 "olcDbMode $ olcDbSearchStack $ olcDbShmKey ) )",
 129                         Cft_Database, &bdb_oc },
 130         { NULL, 0, NULL }
 131 };
 132
 133 static int
 134 bdb_cf_oc(ConfigArgs *c)
 135 {
 136         if ( c->op == SLAP_CONFIG_EMIT ) {
 137                 value_add_one( &c->rvalue_vals, &bdb_oc->soc_cname );
 138                 return 0;
 139         }
 140         return 1;
 141 }
 142
 143 static slap_verbmasks bdb_lockd[] = {
 144         { BER_BVC("default"), DB_LOCK_DEFAULT },
 145         { BER_BVC("oldest"), DB_LOCK_OLDEST },
 146         { BER_BVC("random"), DB_LOCK_RANDOM },
 147         { BER_BVC("youngest"), DB_LOCK_YOUNGEST },
 148         { BER_BVC("fewest"), DB_LOCK_MINLOCKS },
 149         { BER_BVNULL, 0 }
 150 };
 151
 152 /* perform periodic checkpoints */
 153 static void *
 154 bdb_checkpoint( void *ctx, void *arg )
 155 {
 156         struct re_s *rtask = arg;
 157         struct bdb_info *bdb = rtask->arg;
 158
 159         TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte,
 160                 bdb->bi_txn_cp_min, 0 );
 161         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 162         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 163         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 164         return NULL;
 165 }
 166
 167 /* reindex entries on the fly */
 168 static void *
 169 bdb_online_index( void *ctx, void *arg )
 170 {
 171         struct re_s *rtask = arg;
 172         BackendDB *be = rtask->arg;
 173         struct bdb_info *bdb = be->be_private;
 174
 175         Connection conn = {0};
 176         char opbuf[OPERATION_BUFFER_SIZE];
 177         Operation *op = (Operation *)opbuf;
 178
 179         DBC *curs;
 180         DBT key, data;
 181         DB_TXN *txn;
 182         DB_LOCK lock;
 183         u_int32_t locker;
 184         ID id, nid;
 185         EntryInfo *ei;
 186         int rc, getnext = 1;
 187
 188         connection_fake_init( &conn, op, ctx );
 189
 190         op->o_bd = be;
 191
 192         DBTzero( &key );
 193         DBTzero( &data );
 194
 195         id = 1;
 196         key.data = &nid;
 197         key.size = key.ulen = sizeof(ID);
 198         key.flags = DB_DBT_USERMEM;
 199
 200         data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
 201         data.dlen = data.ulen = 0;
 202
 203         while ( 1 ) {
 204                 if ( slapd_shutdown )
 205                         break;
 206
 207                 rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &txn, bdb->bi_db_opflags );
 208                 if ( rc )
 209                         break;
 210                 locker = TXN_ID( txn );
 211                 if ( getnext ) {
 212                         getnext = 0;
 213                         BDB_ID2DISK( id, &nid );
 214                         rc = bdb->bi_id2entry->bdi_db->cursor(
 215                                 bdb->bi_id2entry->bdi_db, txn, &curs, bdb->bi_db_opflags );
 216                         if ( rc ) {
 217                                 TXN_ABORT( txn );
 218                                 break;
 219                         }
 220                         rc = curs->c_get( curs, &key, &data, DB_SET_RANGE );
 221                         curs->c_close( curs );
 222                         if ( rc ) {
 223                                 TXN_ABORT( txn );
 224                                 if ( rc == DB_NOTFOUND )
 225                                         rc = 0;
 226                                 if ( rc == DB_LOCK_DEADLOCK ) {
 227                                         ldap_pvt_thread_yield();
 228                                         continue;
 229                                 }
 230                                 break;
 231                         }
 232                         BDB_DISK2ID( &nid, &id );
 233                 }
 234
 235                 ei = NULL;
 236                 rc = bdb_cache_find_id( op, txn, id, &ei, 0, locker, &lock );
 237                 if ( rc ) {
 238                         TXN_ABORT( txn );
 239                         if ( rc == DB_LOCK_DEADLOCK ) {
 240                                 ldap_pvt_thread_yield();
 241                                 continue;
 242                         }
 243                         if ( rc == DB_NOTFOUND ) {
 244                                 id++;
 245                                 getnext = 1;
 246                                 continue;
 247                         }
 248                         break;
 249                 }
 250                 if ( ei->bei_e ) {
 251                         rc = bdb_index_entry( op, txn, BDB_INDEX_UPDATE_OP, ei->bei_e );
 252                         if ( rc == DB_LOCK_DEADLOCK ) {
 253                                 TXN_ABORT( txn );
 254                                 ldap_pvt_thread_yield();
 255                                 continue;
 256                         }
 257                         if ( rc == 0 ) {
 258                                 rc = TXN_COMMIT( txn, 0 );
 259                                 txn = NULL;
 260                         }
 261                         if ( rc )
 262                                 break;
 263                 }
 264                 id++;
 265                 getnext = 1;
 266         }
 267 out:
 268         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 269         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 270         ldap_pvt_runqueue_remove( &slapd_rq, rtask );
 271         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 272
 273         return NULL;
 274 }
 275
 276 /* Cleanup loose ends after Modify completes */
 277 static int
 278 bdb_cf_cleanup( ConfigArgs *c )
 279 {
 280         struct bdb_info *bdb = c->be->be_private;
 281         int rc = 0;
 282
 283         if ( bdb->bi_flags & BDB_UPD_CONFIG ) {
 284                 if ( bdb->bi_db_config ) {
 285                         int i;
 286                         FILE *f = fopen( bdb->bi_db_config_path, "w" );
 287                         if ( f ) {
 288                                 for (i=0; bdb->bi_db_config[i].bv_val; i++)
 289                                         fprintf( f, "%s\n", bdb->bi_db_config[i].bv_val );
 290                                 fclose( f );
 291                         }
 292                 } else {
 293                         unlink( bdb->bi_db_config_path );
 294                 }
 295                 bdb->bi_flags ^= BDB_UPD_CONFIG;
 296         }
 297
 298         if ( bdb->bi_flags & BDB_DEL_INDEX ) {
 299                 bdb_attr_flush( bdb );
 300                 bdb->bi_flags ^= BDB_DEL_INDEX;
 301         }
 302
 303         if ( bdb->bi_flags & BDB_RE_OPEN ) {
 304                 bdb->bi_flags ^= BDB_RE_OPEN;
 305                 rc = c->be->bd_info->bi_db_close( c->be );
 306                 if ( rc == 0 )
 307                         rc = c->be->bd_info->bi_db_open( c->be );
 308                 /* If this fails, we need to restart */
 309                 if ( rc )
 310                         slapd_shutdown = 1;
 311         }
 312         return rc;
 313 }
 314
 315 static int
 316 bdb_cf_gen(ConfigArgs *c)
 317 {
 318         struct bdb_info *bdb = c->be->be_private;
 319         int rc;
 320
 321         if ( c->op == SLAP_CONFIG_EMIT ) {
 322                 rc = 0;
 323                 switch( c->type ) {
 324                 case BDB_CHKPT:
 325                         if (bdb->bi_txn_cp ) {
 326                                 char buf[64];
 327                                 struct berval bv;
 328                                 bv.bv_len = sprintf( buf, "%d %d", bdb->bi_txn_cp_kbyte,
 329                                         bdb->bi_txn_cp_min );
 330                                 bv.bv_val = buf;
 331                                 value_add_one( &c->rvalue_vals, &bv );
 332                         } else{
 333                                 rc = 1;
 334                         }
 335                         break;
 336
 337                 case BDB_DIRECTORY:
 338                         if ( bdb->bi_dbenv_home ) {
 339                                 c->value_string = ch_strdup( bdb->bi_dbenv_home );
 340                         } else {
 341                                 rc = 1;
 342                         }
 343                         break;
 344
 345                 case BDB_CONFIG:
 346                         if ( bdb->bi_db_config ) {
 347                                 int i;
 348                                 struct berval bv;
 349
 350                                 bv.bv_val = c->log;
 351                                 for (i=0; !BER_BVISNULL(&bdb->bi_db_config[i]); i++) {
 352                                         bv.bv_len = sprintf( bv.bv_val, "{%d}%s", i,
 353                                                 bdb->bi_db_config[i].bv_val );
 354                                         value_add_one( &c->rvalue_vals, &bv );
 355                                 }
 356                         }
 357                         if ( !c->rvalue_vals ) rc = 1;
 358                         break;
 359
 360                 case BDB_NOSYNC:
 361                         if ( bdb->bi_dbenv_xflags & DB_TXN_NOSYNC )
 362                                 c->value_int = 1;
 363                         break;
 364
 365                 case BDB_INDEX:
 366                         bdb_attr_index_unparse( bdb, &c->rvalue_vals );
 367                         if ( !c->rvalue_vals ) rc = 1;
 368                         break;
 369
 370                 case BDB_LOCKD:
 371                         rc = 1;
 372                         if ( bdb->bi_lock_detect != DB_LOCK_DEFAULT ) {
 373                                 int i;
 374                                 for (i=0; !BER_BVISNULL(&bdb_lockd[i].word); i++) {
 375                                         if ( bdb->bi_lock_detect == bdb_lockd[i].mask ) {
 376                                                 value_add_one( &c->rvalue_vals, &bdb_lockd[i].word );
 377                                                 rc = 0;
 378                                                 break;
 379                                         }
 380                                 }
 381                         }
 382                         break;
 383
 384                 case BDB_SSTACK:
 385                         c->value_int = bdb->bi_search_stack_depth;
 386                         break;
 387                 }
 388                 return rc;
 389         } else if ( c->op == LDAP_MOD_DELETE ) {
 390                 rc = 0;
 391                 switch( c->type ) {
 392                 /* single-valued no-ops */
 393                 case BDB_LOCKD:
 394                 case BDB_SSTACK:
 395                         break;
 396
 397                 case BDB_CHKPT:
 398                         if ( bdb->bi_txn_cp_task ) {
 399                                 struct re_s *re = bdb->bi_txn_cp_task;
 400                                 bdb->bi_txn_cp_task = NULL;
 401                                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ))
 402                                         ldap_pvt_runqueue_stoptask( &slapd_rq, re );
 403                                 ldap_pvt_runqueue_remove( &slapd_rq, re );
 404                         }
 405                         bdb->bi_txn_cp = 0;
 406                         break;
 407                 case BDB_CONFIG:
 408                         if ( c->valx < 0 ) {
 409                                 ber_bvarray_free( bdb->bi_db_config );
 410                                 bdb->bi_db_config = NULL;
 411                         } else {
 412                                 int i = c->valx;
 413                                 ch_free( bdb->bi_db_config[i].bv_val );
 414                                 for (; bdb->bi_db_config[i].bv_val; i++)
 415                                         bdb->bi_db_config[i] = bdb->bi_db_config[i+1];
 416                         }
 417                         bdb->bi_flags |= BDB_UPD_CONFIG;
 418                         c->cleanup = bdb_cf_cleanup;
 419                         break;
 420                 case BDB_DIRECTORY:
 421                         bdb->bi_flags |= BDB_RE_OPEN;
 422                         bdb->bi_flags ^= BDB_HAS_CONFIG;
 423                         ch_free( bdb->bi_dbenv_home );
 424                         bdb->bi_dbenv_home = NULL;
 425                         ch_free( bdb->bi_db_config_path );
 426                         bdb->bi_db_config_path = NULL;
 427                         c->cleanup = bdb_cf_cleanup;
 428                         ldap_pvt_thread_pool_purgekey( bdb->bi_dbenv );
 429                         ldap_pvt_thread_pool_purgekey( ((char *)bdb->bi_dbenv) + 1 );
 430                         break;
 431                 case BDB_NOSYNC:
 432                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC, 0 );
 433                         break;
 434                 case BDB_INDEX: {
 435                         AttributeDescription *ad = NULL;
 436                         struct berval bv, def = BER_BVC("default");
 437                         char *ptr;
 438                         const char *text;
 439                         for (ptr = c->line; !isspace( *ptr ); ptr++);
 440                         bv.bv_val = c->line;
 441                         bv.bv_len = ptr - bv.bv_val;
 442                         if ( bvmatch( &bv, &def )) {
 443                                 bdb->bi_defaultmask = 0;
 444                         } else {
 445                                 slap_bv2ad( &bv, &ad, &text );
 446                                 if ( ad ) {
 447                                         AttrInfo *ai = bdb_attr_mask( bdb, ad );
 448                                         ai->ai_indexmask |= BDB_INDEX_DELETING;
 449                                         bdb->bi_flags |= BDB_DEL_INDEX;
 450                                         c->cleanup = bdb_cf_cleanup;
 451                                 }
 452                         }
 453                         }
 454                         break;
 455                 }
 456                 return rc;
 457         }
 458
 459         switch( c->type ) {
 460         case BDB_CHKPT:
 461                 bdb->bi_txn_cp = 1;
 462                 bdb->bi_txn_cp_kbyte = strtol( c->argv[1], NULL, 0 );
 463                 bdb->bi_txn_cp_min = strtol( c->argv[2], NULL, 0 );
 464                 /* If we're in server mode and time-based checkpointing is enabled,
 465                  * submit a task to perform periodic checkpoints.
 466                  */
 467                 if ((slapMode & SLAP_SERVER_MODE) && bdb->bi_txn_cp_min ) {
 468                         struct re_s *re = bdb->bi_txn_cp_task;
 469                         if ( re )
 470                                 re->interval.tv_sec = bdb->bi_txn_cp_min * 60;
 471                         else
 472                                 bdb->bi_txn_cp_task = ldap_pvt_runqueue_insert( &slapd_rq,
 473                                         bdb->bi_txn_cp_min * 60, bdb_checkpoint, bdb,
 474                                         "bdb_checkpoint", c->be->be_suffix[0].bv_val );
 475                 }
 476                 break;
 477
 478         case BDB_CONFIG: {
 479                 char *ptr = c->line + STRLENOF("dbconfig");
 480                 struct berval bv;
 481                 while (!isspace(*ptr)) ptr++;
 482                 while (isspace(*ptr)) ptr++;
 483
 484                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 485                         bdb->bi_flags |= BDB_UPD_CONFIG;
 486                         c->cleanup = bdb_cf_cleanup;
 487                 } else {
 488                 /* If we're just starting up...
 489                  */
 490                         FILE *f;
 491                         /* If a DB_CONFIG file exists, or we don't know the path
 492                          * to the DB_CONFIG file, ignore these directives
 493                          */
 494                         if (( bdb->bi_flags & BDB_HAS_CONFIG ) || !bdb->bi_db_config_path )
 495                                 break;
 496                         f = fopen( bdb->bi_db_config_path, "a" );
 497                         if ( f ) {
 498                                 /* FIXME: EBCDIC probably needs special handling */
 499                                 fprintf( f, "%s\n", ptr );
 500                                 fclose( f );
 501                         }
 502                 }
 503                 ber_str2bv( ptr, 0, 1, &bv );
 504                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 505                 }
 506                 break;
 507
 508         case BDB_DIRECTORY: {
 509                 FILE *f;
 510                 char *ptr;
 511
 512                 if ( bdb->bi_dbenv_home )
 513                         ch_free( bdb->bi_dbenv_home );
 514                 bdb->bi_dbenv_home = c->value_string;
 515
 516                 /* See if a DB_CONFIG file already exists here */
 517                 if ( bdb->bi_db_config_path )
 518                         ch_free( bdb->bi_db_config_path );
 519                 bdb->bi_db_config_path = ch_malloc( strlen( bdb->bi_dbenv_home ) +
 520                         STRLENOF(LDAP_DIRSEP) + STRLENOF("DB_CONFIG") + 1 );
 521                 ptr = lutil_strcopy( bdb->bi_db_config_path, bdb->bi_dbenv_home );
 522                 *ptr++ = LDAP_DIRSEP[0];
 523                 strcpy( ptr, "DB_CONFIG" );
 524
 525                 f = fopen( bdb->bi_db_config_path, "r" );
 526                 if ( f ) {
 527                         bdb->bi_flags |= BDB_HAS_CONFIG;
 528                         fclose(f);
 529                 }
 530                 }
 531                 break;
 532
 533         case BDB_NOSYNC:
 534                 if ( c->value_int )
 535                         bdb->bi_dbenv_xflags |= DB_TXN_NOSYNC;
 536                 else
 537                         bdb->bi_dbenv_xflags &= ~DB_TXN_NOSYNC;
 538                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 539                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC,
 540                                 c->value_int );
 541                 }
 542                 break;
 543
 544         case BDB_INDEX:
 545                 rc = bdb_attr_index_config( bdb, c->fname, c->lineno,
 546                         c->argc - 1, &c->argv[1] );
 547
 548                 if( rc != LDAP_SUCCESS ) return 1;
 549                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 550                         /* Start the task as soon as we finish here */
 551                         ldap_pvt_runqueue_insert( &slapd_rq, 60,
 552                                 bdb_online_index, c->be,
 553                                 "bdb_online_index", c->be->be_suffix[0].bv_val );
 554                 }
 555                 break;
 556
 557         case BDB_LOCKD:
 558                 rc = verb_to_mask( c->argv[1], bdb_lockd );
 559                 if ( BER_BVISNULL(&bdb_lockd[rc].word) ) {
 560                         fprintf( stderr, "%s: "
 561                                 "bad policy (%s) in \"lockDetect <policy>\" line\n",
 562                                 c->log, c->argv[1] );
 563                         return 1;
 564                 }
 565                 bdb->bi_lock_detect = rc;
 566                 break;
 567
 568         case BDB_SSTACK:
 569                 if ( c->value_int < MINIMUM_SEARCH_STACK_DEPTH ) {
 570                         fprintf( stderr,
 571                 "%s: depth %d too small, using %d\n",
 572                         c->log, c->value_int, MINIMUM_SEARCH_STACK_DEPTH );
 573                         c->value_int = MINIMUM_SEARCH_STACK_DEPTH;
 574                 }
 575                 bdb->bi_search_stack_depth = c->value_int;
 576                 break;
 577         }
 578         return 0;
 579 }
 580
 581 int bdb_back_init_cf( BackendInfo *bi )
 582 {
 583         int rc;
 584         bi->bi_cf_table = bdbcfg;
 585
 586         rc = config_register_schema( bdbcfg, bdbocs );
 587         if ( rc ) return rc;
 588         bdbcfg[0].ad = slap_schema.si_ad_objectClass;
 589         return 0;
 590 }