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