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 #define bdb_cf_gen                      BDB_SYMBOL(cf_gen)
  34 #define bdb_cf_cleanup          BDB_SYMBOL(cf_cleanup)
  35 #define bdb_checkpoint          BDB_SYMBOL(checkpoint)
  36 #define bdb_online_index        BDB_SYMBOL(online_index)
  37
  38 static ConfigDriver bdb_cf_gen;
  39
  40 enum {
  41         BDB_CHKPT = 1,
  42         BDB_CONFIG,
  43         BDB_DIRECTORY,
  44         BDB_NOSYNC,
  45         BDB_DIRTYR,
  46         BDB_INDEX,
  47         BDB_LOCKD,
  48         BDB_SSTACK
  49 };
  50
  51 static ConfigTable bdbcfg[] = {
  52         { "directory", "dir", 2, 2, 0, ARG_STRING|ARG_MAGIC|BDB_DIRECTORY,
  53                 bdb_cf_gen, "( OLcfgDbAt:0.1 NAME 'olcDbDirectory' "
  54                         "DESC 'Directory for database content' "
  55                         "EQUALITY caseIgnoreMatch "
  56                         "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
  57         { "cachesize", "size", 2, 2, 0, ARG_INT|ARG_OFFSET,
  58                 (void *)offsetof(struct bdb_info, bi_cache.c_maxsize),
  59                 "( OLcfgDbAt:1.1 NAME 'olcDbCacheSize' "
  60                         "DESC 'Entry cache size in entries' "
  61                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  62         { "checkpoint", "kbyte> <min", 3, 3, 0, ARG_MAGIC|BDB_CHKPT,
  63                 bdb_cf_gen, "( OLcfgDbAt:1.2 NAME 'olcDbCheckpoint' "
  64                         "DESC 'Database checkpoint interval in kbytes and minutes' "
  65                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",NULL, NULL },
  66         { "dbconfig", "DB_CONFIG setting", 1, 0, 0, ARG_MAGIC|BDB_CONFIG,
  67                 bdb_cf_gen, "( OLcfgDbAt:1.3 NAME 'olcDbConfig' "
  68                         "DESC 'BerkeleyDB DB_CONFIG configuration directives' "
  69                         "SYNTAX OMsDirectoryString )",NULL, NULL },
  70         { "dbnosync", NULL, 1, 2, 0, ARG_ON_OFF|ARG_MAGIC|BDB_NOSYNC,
  71                 bdb_cf_gen, "( OLcfgDbAt:1.4 NAME 'olcDbNoSync' "
  72                         "DESC 'Disable synchronous database writes' "
  73                         "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  74         { "dirtyread", NULL, 1, 2, 0,
  75 #ifdef SLAP_BDB_ALLOW_DIRTY_READ
  76                 ARG_ON_OFF|ARG_MAGIC|BDB_DIRTYR, bdb_cf_gen,
  77 #else
  78                 ARG_IGNORED, NULL,
  79 #endif
  80                 "( OLcfgDbAt:1.5 NAME 'olcDbDirtyRead' "
  81                 "DESC 'Allow reads of uncommitted data' "
  82                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  83         { "idlcachesize", "size", 2, 2, 0, ARG_INT|ARG_OFFSET,
  84                 (void *)offsetof(struct bdb_info,bi_idl_cache_max_size),
  85                 "( OLcfgDbAt:1.6 NAME 'olcDbIDLcacheSize' "
  86                 "DESC 'IDL cache size in IDLs' "
  87                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  88         { "index", "attr> <[pres,eq,approx,sub]", 2, 3, 0, ARG_MAGIC|BDB_INDEX,
  89                 bdb_cf_gen, "( OLcfgDbAt:0.2 NAME 'olcDbIndex' "
  90                 "DESC 'Attribute index parameters' "
  91                 "EQUALITY caseIgnoreMatch "
  92                 "SYNTAX OMsDirectoryString )", NULL, NULL },
  93         { "linearindex", NULL, 1, 2, 0, ARG_ON_OFF|ARG_OFFSET,
  94                 (void *)offsetof(struct bdb_info, bi_linear_index),
  95                 "( OLcfgDbAt:1.7 NAME 'olcDbLinearIndex' "
  96                 "DESC 'Index attributes one at a time' "
  97                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  98         { "lockdetect", "policy", 2, 2, 0, ARG_MAGIC|BDB_LOCKD,
  99                 bdb_cf_gen, "( OLcfgDbAt:1.8 NAME 'olcDbLockDetect' "
 100                 "DESC 'Deadlock detection algorithm' "
 101                 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
 102         { "mode", "mode", 2, 2, 0, ARG_INT|ARG_OFFSET,
 103                 (void *)offsetof(struct bdb_info, bi_dbenv_mode),
 104                 "( OLcfgDbAt:0.3 NAME 'olcDbMode' "
 105                 "DESC 'Unix permissions of database files' "
 106                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 107         { "searchstack", "depth", 2, 2, 0, ARG_INT|ARG_MAGIC|BDB_SSTACK,
 108                 bdb_cf_gen, "( OLcfgDbAt:1.9 NAME 'olcDbSearchStack' "
 109                 "DESC 'Depth of search stack in IDLs' "
 110                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 111         { "shm_key", "key", 2, 2, 0, ARG_INT|ARG_OFFSET,
 112                 (void *)offsetof(struct bdb_info, bi_shm_key),
 113                 "( OLcfgDbAt:1.10 NAME 'olcDbShmKey' "
 114                 "DESC 'Key for shared memory region' "
 115                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 116         { NULL, NULL, 0, 0, 0, ARG_IGNORED,
 117                 NULL, NULL, NULL, NULL }
 118 };
 119
 120 static ConfigOCs bdbocs[] = {
 121         {
 122 #ifdef BDB_HIER
 123                 "( OLcfgDbOc:1.2 "
 124                 "NAME 'olcHdbConfig' "
 125                 "DESC 'HDB backend configuration' "
 126 #else
 127                 "( OLcfgDbOc:1.1 "
 128                 "NAME 'olcBdbConfig' "
 129                 "DESC 'BDB backend configuration' "
 130 #endif
 131                 "SUP olcDatabaseConfig "
 132                 "MUST olcDbDirectory "
 133                 "MAY ( olcDbCacheSize $ olcDbCheckpoint $ olcDbConfig $ "
 134                 "olcDbNoSync $ olcDbDirtyRead $ olcDbIDLcacheSize $ "
 135                 "olcDbIndex $ olcDbLinearIndex $ olcDbLockDetect $ "
 136                 "olcDbMode $ olcDbSearchStack $ olcDbShmKey ) )",
 137                         Cft_Database, bdbcfg },
 138         { NULL, 0, NULL }
 139 };
 140
 141 static slap_verbmasks bdb_lockd[] = {
 142         { BER_BVC("default"), DB_LOCK_DEFAULT },
 143         { BER_BVC("oldest"), DB_LOCK_OLDEST },
 144         { BER_BVC("random"), DB_LOCK_RANDOM },
 145         { BER_BVC("youngest"), DB_LOCK_YOUNGEST },
 146         { BER_BVC("fewest"), DB_LOCK_MINLOCKS },
 147         { BER_BVNULL, 0 }
 148 };
 149
 150 /* perform periodic checkpoints */
 151 static void *
 152 bdb_checkpoint( void *ctx, void *arg )
 153 {
 154         struct re_s *rtask = arg;
 155         struct bdb_info *bdb = rtask->arg;
 156
 157         TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte,
 158                 bdb->bi_txn_cp_min, 0 );
 159         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 160         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 161         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 162         return NULL;
 163 }
 164
 165 /* reindex entries on the fly */
 166 static void *
 167 bdb_online_index( void *ctx, void *arg )
 168 {
 169         struct re_s *rtask = arg;
 170         BackendDB *be = rtask->arg;
 171         struct bdb_info *bdb = be->be_private;
 172
 173         Connection conn = {0};
 174         char opbuf[OPERATION_BUFFER_SIZE];
 175         Operation *op = (Operation *)opbuf;
 176
 177         DBC *curs;
 178         DBT key, data;
 179         DB_TXN *txn;
 180         DB_LOCK lock;
 181         u_int32_t locker;
 182         ID id, nid;
 183         EntryInfo *ei;
 184         int rc, getnext = 1;
 185
 186         connection_fake_init( &conn, op, ctx );
 187
 188         op->o_bd = be;
 189
 190         DBTzero( &key );
 191         DBTzero( &data );
 192
 193         id = 1;
 194         key.data = &nid;
 195         key.size = key.ulen = sizeof(ID);
 196         key.flags = DB_DBT_USERMEM;
 197
 198         data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
 199         data.dlen = data.ulen = 0;
 200
 201         while ( 1 ) {
 202                 if ( slapd_shutdown )
 203                         break;
 204
 205                 rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &txn, bdb->bi_db_opflags );
 206                 if ( rc )
 207                         break;
 208                 locker = TXN_ID( txn );
 209                 if ( getnext ) {
 210                         getnext = 0;
 211                         BDB_ID2DISK( id, &nid );
 212                         rc = bdb->bi_id2entry->bdi_db->cursor(
 213                                 bdb->bi_id2entry->bdi_db, txn, &curs, bdb->bi_db_opflags );
 214                         if ( rc ) {
 215                                 TXN_ABORT( txn );
 216                                 break;
 217                         }
 218                         rc = curs->c_get( curs, &key, &data, DB_SET_RANGE );
 219                         curs->c_close( curs );
 220                         if ( rc ) {
 221                                 TXN_ABORT( txn );
 222                                 if ( rc == DB_NOTFOUND )
 223                                         rc = 0;
 224                                 if ( rc == DB_LOCK_DEADLOCK ) {
 225                                         ldap_pvt_thread_yield();
 226                                         continue;
 227                                 }
 228                                 break;
 229                         }
 230                         BDB_DISK2ID( &nid, &id );
 231                 }
 232
 233                 ei = NULL;
 234                 rc = bdb_cache_find_id( op, txn, id, &ei, 0, locker, &lock );
 235                 if ( rc ) {
 236                         TXN_ABORT( txn );
 237                         if ( rc == DB_LOCK_DEADLOCK ) {
 238                                 ldap_pvt_thread_yield();
 239                                 continue;
 240                         }
 241                         if ( rc == DB_NOTFOUND ) {
 242                                 id++;
 243                                 getnext = 1;
 244                                 continue;
 245                         }
 246                         break;
 247                 }
 248                 if ( ei->bei_e ) {
 249                         rc = bdb_index_entry( op, txn, BDB_INDEX_UPDATE_OP, ei->bei_e );
 250                         if ( rc == DB_LOCK_DEADLOCK ) {
 251                                 TXN_ABORT( txn );
 252                                 ldap_pvt_thread_yield();
 253                                 continue;
 254                         }
 255                         if ( rc == 0 ) {
 256                                 rc = TXN_COMMIT( txn, 0 );
 257                                 txn = NULL;
 258                         }
 259                         if ( rc )
 260                                 break;
 261                 }
 262                 id++;
 263                 getnext = 1;
 264         }
 265 out:
 266         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 267         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 268         bdb->bi_index_task = NULL;
 269         ldap_pvt_runqueue_remove( &slapd_rq, rtask );
 270         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 271
 272         return NULL;
 273 }
 274
 275 /* Cleanup loose ends after Modify completes */
 276 static int
 277 bdb_cf_cleanup( ConfigArgs *c )
 278 {
 279         struct bdb_info *bdb = c->be->be_private;
 280         int rc = 0;
 281
 282         if ( bdb->bi_flags & BDB_UPD_CONFIG ) {
 283                 if ( bdb->bi_db_config ) {
 284                         int i;
 285                         FILE *f = fopen( bdb->bi_db_config_path, "w" );
 286                         if ( f ) {
 287                                 for (i=0; bdb->bi_db_config[i].bv_val; i++)
 288                                         fprintf( f, "%s\n", bdb->bi_db_config[i].bv_val );
 289                                 fclose( f );
 290                         }
 291                 } else {
 292                         unlink( bdb->bi_db_config_path );
 293                 }
 294                 bdb->bi_flags ^= BDB_UPD_CONFIG;
 295         }
 296
 297         if ( bdb->bi_flags & BDB_DEL_INDEX ) {
 298                 bdb_attr_flush( bdb );
 299                 bdb->bi_flags ^= BDB_DEL_INDEX;
 300         }
 301
 302         if ( bdb->bi_flags & BDB_RE_OPEN ) {
 303                 bdb->bi_flags ^= BDB_RE_OPEN;
 304                 rc = c->be->bd_info->bi_db_close( c->be );
 305                 if ( rc == 0 )
 306                         rc = c->be->bd_info->bi_db_open( c->be );
 307                 /* If this fails, we need to restart */
 308                 if ( rc ) {
 309                         slapd_shutdown = 2;
 310                         Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(bdb_cf_cleanup)
 311                                 ": failed to reopen database, rc=%d", rc, 0, 0 );
 312                 }
 313         }
 314         return rc;
 315 }
 316
 317 static int
 318 bdb_cf_gen(ConfigArgs *c)
 319 {
 320         struct bdb_info *bdb = c->be->be_private;
 321         int rc;
 322
 323         if ( c->op == SLAP_CONFIG_EMIT ) {
 324                 rc = 0;
 325                 switch( c->type ) {
 326                 case BDB_CHKPT:
 327                         if (bdb->bi_txn_cp ) {
 328                                 char buf[64];
 329                                 struct berval bv;
 330                                 bv.bv_len = sprintf( buf, "%d %d", bdb->bi_txn_cp_kbyte,
 331                                         bdb->bi_txn_cp_min );
 332                                 bv.bv_val = buf;
 333                                 value_add_one( &c->rvalue_vals, &bv );
 334                         } else{
 335                                 rc = 1;
 336                         }
 337                         break;
 338
 339                 case BDB_DIRECTORY:
 340                         if ( bdb->bi_dbenv_home ) {
 341                                 c->value_string = ch_strdup( bdb->bi_dbenv_home );
 342                         } else {
 343                                 rc = 1;
 344                         }
 345                         break;
 346
 347                 case BDB_CONFIG:
 348                         if (( slapMode&SLAP_SERVER_MODE ) && !( bdb->bi_flags&BDB_IS_OPEN )
 349                                 && !bdb->bi_db_config ) {
 350                                 char    buf[SLAP_TEXT_BUFLEN];
 351                                 FILE *f = fopen( bdb->bi_db_config_path, "r" );
 352                                 struct berval bv;
 353
 354                                 if ( f ) {
 355                                         bdb->bi_flags |= BDB_HAS_CONFIG;
 356                                         while ( fgets( buf, sizeof(buf), f )) {
 357                                                 ber_str2bv( buf, 0, 1, &bv );
 358                                                 if ( bv.bv_val[bv.bv_len-1] == '\n' ) {
 359                                                         bv.bv_len--;
 360                                                         bv.bv_val[bv.bv_len] = '\0';
 361                                                 }
 362                                                 /* shouldn't need this, but ... */
 363                                                 if ( bv.bv_val[bv.bv_len-1] == '\r' ) {
 364                                                         bv.bv_len--;
 365                                                         bv.bv_val[bv.bv_len] = '\0';
 366                                                 }
 367                                                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 368                                         }
 369                                         fclose( f );
 370                                 }
 371                         }
 372                         if ( bdb->bi_db_config ) {
 373                                 int i;
 374                                 struct berval bv;
 375
 376                                 bv.bv_val = c->log;
 377                                 for (i=0; !BER_BVISNULL(&bdb->bi_db_config[i]); i++) {
 378                                         bv.bv_len = sprintf( bv.bv_val, "{%d}%s", i,
 379                                                 bdb->bi_db_config[i].bv_val );
 380                                         value_add_one( &c->rvalue_vals, &bv );
 381                                 }
 382                         }
 383                         if ( !c->rvalue_vals ) rc = 1;
 384                         break;
 385
 386                 case BDB_NOSYNC:
 387                         if ( bdb->bi_dbenv_xflags & DB_TXN_NOSYNC )
 388                                 c->value_int = 1;
 389                         break;
 390
 391                 case BDB_INDEX:
 392                         bdb_attr_index_unparse( bdb, &c->rvalue_vals );
 393                         if ( !c->rvalue_vals ) rc = 1;
 394                         break;
 395
 396                 case BDB_LOCKD:
 397                         rc = 1;
 398                         if ( bdb->bi_lock_detect != DB_LOCK_DEFAULT ) {
 399                                 int i;
 400                                 for (i=0; !BER_BVISNULL(&bdb_lockd[i].word); i++) {
 401                                         if ( bdb->bi_lock_detect == bdb_lockd[i].mask ) {
 402                                                 value_add_one( &c->rvalue_vals, &bdb_lockd[i].word );
 403                                                 rc = 0;
 404                                                 break;
 405                                         }
 406                                 }
 407                         }
 408                         break;
 409
 410                 case BDB_SSTACK:
 411                         c->value_int = bdb->bi_search_stack_depth;
 412                         break;
 413                 }
 414                 return rc;
 415         } else if ( c->op == LDAP_MOD_DELETE ) {
 416                 rc = 0;
 417                 switch( c->type ) {
 418                 /* single-valued no-ops */
 419                 case BDB_LOCKD:
 420                 case BDB_SSTACK:
 421                         break;
 422
 423                 case BDB_CHKPT:
 424                         if ( bdb->bi_txn_cp_task ) {
 425                                 struct re_s *re = bdb->bi_txn_cp_task;
 426                                 bdb->bi_txn_cp_task = NULL;
 427                                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ))
 428                                         ldap_pvt_runqueue_stoptask( &slapd_rq, re );
 429                                 ldap_pvt_runqueue_remove( &slapd_rq, re );
 430                         }
 431                         bdb->bi_txn_cp = 0;
 432                         break;
 433                 case BDB_CONFIG:
 434                         if ( c->valx < 0 ) {
 435                                 ber_bvarray_free( bdb->bi_db_config );
 436                                 bdb->bi_db_config = NULL;
 437                         } else {
 438                                 int i = c->valx;
 439                                 ch_free( bdb->bi_db_config[i].bv_val );
 440                                 for (; bdb->bi_db_config[i].bv_val; i++)
 441                                         bdb->bi_db_config[i] = bdb->bi_db_config[i+1];
 442                         }
 443                         bdb->bi_flags |= BDB_UPD_CONFIG;
 444                         c->cleanup = bdb_cf_cleanup;
 445                         break;
 446                 case BDB_DIRECTORY:
 447                         bdb->bi_flags |= BDB_RE_OPEN;
 448                         bdb->bi_flags ^= BDB_HAS_CONFIG;
 449                         ch_free( bdb->bi_dbenv_home );
 450                         bdb->bi_dbenv_home = NULL;
 451                         ch_free( bdb->bi_db_config_path );
 452                         bdb->bi_db_config_path = NULL;
 453                         c->cleanup = bdb_cf_cleanup;
 454                         ldap_pvt_thread_pool_purgekey( bdb->bi_dbenv );
 455                         ldap_pvt_thread_pool_purgekey( ((char *)bdb->bi_dbenv) + 1 );
 456                         break;
 457                 case BDB_NOSYNC:
 458                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC, 0 );
 459                         break;
 460                 case BDB_INDEX: {
 461                         AttributeDescription *ad = NULL;
 462                         struct berval bv, def = BER_BVC("default");
 463                         char *ptr;
 464                         const char *text;
 465                         for (ptr = c->line; !isspace( *ptr ); ptr++);
 466                         bv.bv_val = c->line;
 467                         bv.bv_len = ptr - bv.bv_val;
 468                         if ( bvmatch( &bv, &def )) {
 469                                 bdb->bi_defaultmask = 0;
 470                         } else {
 471                                 slap_bv2ad( &bv, &ad, &text );
 472                                 if ( ad ) {
 473                                         AttrInfo *ai = bdb_attr_mask( bdb, ad );
 474                                         ai->ai_indexmask |= BDB_INDEX_DELETING;
 475                                         bdb->bi_flags |= BDB_DEL_INDEX;
 476                                         c->cleanup = bdb_cf_cleanup;
 477                                 }
 478                         }
 479                         }
 480                         break;
 481                 }
 482                 return rc;
 483         }
 484
 485         switch( c->type ) {
 486         case BDB_CHKPT:
 487                 bdb->bi_txn_cp = 1;
 488                 bdb->bi_txn_cp_kbyte = strtol( c->argv[1], NULL, 0 );
 489                 bdb->bi_txn_cp_min = strtol( c->argv[2], NULL, 0 );
 490                 /* If we're in server mode and time-based checkpointing is enabled,
 491                  * submit a task to perform periodic checkpoints.
 492                  */
 493                 if ((slapMode & SLAP_SERVER_MODE) && bdb->bi_txn_cp_min ) {
 494                         struct re_s *re = bdb->bi_txn_cp_task;
 495                         if ( re ) {
 496                                 re->interval.tv_sec = bdb->bi_txn_cp_min * 60;
 497                         } else {
 498                                 if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 499                                         fprintf( stderr, "%s: "
 500                                                 "\"checkpoint\" must occur after \"suffix\".\n",
 501                                                 c->log );
 502                                         return 1;
 503                                 }
 504                                 bdb->bi_txn_cp_task = ldap_pvt_runqueue_insert( &slapd_rq,
 505                                         bdb->bi_txn_cp_min * 60, bdb_checkpoint, bdb,
 506                                         LDAP_XSTRING(bdb_checkpoint), c->be->be_suffix[0].bv_val );
 507                         }
 508                 }
 509                 break;
 510
 511         case BDB_CONFIG: {
 512                 char *ptr = c->line + STRLENOF("dbconfig");
 513                 struct berval bv;
 514                 while (!isspace(*ptr)) ptr++;
 515                 while (isspace(*ptr)) ptr++;
 516
 517                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 518                         bdb->bi_flags |= BDB_UPD_CONFIG;
 519                         c->cleanup = bdb_cf_cleanup;
 520                 } else {
 521                 /* If we're just starting up...
 522                  */
 523                         FILE *f;
 524                         /* If a DB_CONFIG file exists, or we don't know the path
 525                          * to the DB_CONFIG file, ignore these directives
 526                          */
 527                         if (( bdb->bi_flags & BDB_HAS_CONFIG ) || !bdb->bi_db_config_path )
 528                                 break;
 529                         f = fopen( bdb->bi_db_config_path, "a" );
 530                         if ( f ) {
 531                                 /* FIXME: EBCDIC probably needs special handling */
 532                                 fprintf( f, "%s\n", ptr );
 533                                 fclose( f );
 534                         }
 535                 }
 536                 ber_str2bv( ptr, 0, 1, &bv );
 537                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 538                 }
 539                 break;
 540
 541         case BDB_DIRECTORY: {
 542                 FILE *f;
 543                 char *ptr;
 544
 545                 if ( bdb->bi_dbenv_home )
 546                         ch_free( bdb->bi_dbenv_home );
 547                 bdb->bi_dbenv_home = c->value_string;
 548
 549                 /* See if a DB_CONFIG file already exists here */
 550                 if ( bdb->bi_db_config_path )
 551                         ch_free( bdb->bi_db_config_path );
 552                 bdb->bi_db_config_path = ch_malloc( strlen( bdb->bi_dbenv_home ) +
 553                         STRLENOF(LDAP_DIRSEP) + STRLENOF("DB_CONFIG") + 1 );
 554                 ptr = lutil_strcopy( bdb->bi_db_config_path, bdb->bi_dbenv_home );
 555                 *ptr++ = LDAP_DIRSEP[0];
 556                 strcpy( ptr, "DB_CONFIG" );
 557
 558                 f = fopen( bdb->bi_db_config_path, "r" );
 559                 if ( f ) {
 560                         bdb->bi_flags |= BDB_HAS_CONFIG;
 561                         fclose(f);
 562                 }
 563                 }
 564                 break;
 565
 566         case BDB_NOSYNC:
 567                 if ( c->value_int )
 568                         bdb->bi_dbenv_xflags |= DB_TXN_NOSYNC;
 569                 else
 570                         bdb->bi_dbenv_xflags &= ~DB_TXN_NOSYNC;
 571                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 572                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC,
 573                                 c->value_int );
 574                 }
 575                 break;
 576
 577         case BDB_INDEX:
 578                 rc = bdb_attr_index_config( bdb, c->fname, c->lineno,
 579                         c->argc - 1, &c->argv[1] );
 580
 581                 if( rc != LDAP_SUCCESS ) return 1;
 582                 if (( bdb->bi_flags & BDB_IS_OPEN ) && !bdb->bi_index_task ) {
 583                         /* Start the task as soon as we finish here. Set a long
 584                          * interval (10 hours) so that it only gets scheduled once.
 585                          */
 586                         if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 587                                 fprintf( stderr, "%s: "
 588                                         "\"index\" must occur after \"suffix\".\n",
 589                                         c->log );
 590                                 return 1;
 591                         }
 592                         bdb->bi_index_task = ldap_pvt_runqueue_insert( &slapd_rq, 36000,
 593                                 bdb_online_index, c->be,
 594                                 LDAP_XSTRING(bdb_online_index), c->be->be_suffix[0].bv_val );
 595                 }
 596                 break;
 597
 598         case BDB_LOCKD:
 599                 rc = verb_to_mask( c->argv[1], bdb_lockd );
 600                 if ( BER_BVISNULL(&bdb_lockd[rc].word) ) {
 601                         fprintf( stderr, "%s: "
 602                                 "bad policy (%s) in \"lockDetect <policy>\" line\n",
 603                                 c->log, c->argv[1] );
 604                         return 1;
 605                 }
 606                 bdb->bi_lock_detect = rc;
 607                 break;
 608
 609         case BDB_SSTACK:
 610                 if ( c->value_int < MINIMUM_SEARCH_STACK_DEPTH ) {
 611                         fprintf( stderr,
 612                 "%s: depth %d too small, using %d\n",
 613                         c->log, c->value_int, MINIMUM_SEARCH_STACK_DEPTH );
 614                         c->value_int = MINIMUM_SEARCH_STACK_DEPTH;
 615                 }
 616                 bdb->bi_search_stack_depth = c->value_int;
 617                 break;
 618         }
 619         return 0;
 620 }
 621
 622 int bdb_back_init_cf( BackendInfo *bi )
 623 {
 624         int rc;
 625         bi->bi_cf_ocs = bdbocs;
 626
 627         rc = config_register_schema( bdbcfg, bdbocs );
 628         if ( rc ) return rc;
 629         return 0;
 630 }