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