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

   1 /* config.c - mdb backend configuration file routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2011 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/ctype.h>
  21 #include <ac/string.h>
  22 #include <ac/errno.h>
  23
  24 #include "back-mdb.h"
  25
  26 #include "config.h"
  27
  28 #include "lutil.h"
  29 #include "ldap_rq.h"
  30
  31 static ConfigDriver mdb_cf_gen;
  32
  33 enum {
  34         MDB_CHKPT = 1,
  35         MDB_DIRECTORY,
  36         MDB_DBNOSYNC,
  37         MDB_INDEX,
  38         MDB_MAXSIZE,
  39         MDB_MODE,
  40         MDB_SSTACK,
  41 };
  42
  43 static ConfigTable mdbcfg[] = {
  44         { "directory", "dir", 2, 2, 0, ARG_STRING|ARG_MAGIC|MDB_DIRECTORY,
  45                 mdb_cf_gen, "( OLcfgDbAt:0.1 NAME 'olcDbDirectory' "
  46                         "DESC 'Directory for database content' "
  47                         "EQUALITY caseIgnoreMatch "
  48                         "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
  49         { "checkpoint", "kbyte> <min", 3, 3, 0, ARG_MAGIC|MDB_CHKPT,
  50                 mdb_cf_gen, "( OLcfgDbAt:1.2 NAME 'olcDbCheckpoint' "
  51                         "DESC 'Database checkpoint interval in kbytes and minutes' "
  52                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",NULL, NULL },
  53         { "dbnosync", NULL, 1, 2, 0, ARG_ON_OFF|ARG_MAGIC|MDB_DBNOSYNC,
  54                 mdb_cf_gen, "( OLcfgDbAt:1.4 NAME 'olcDbNoSync' "
  55                         "DESC 'Disable synchronous database writes' "
  56                         "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  57         { "index", "attr> <[pres,eq,approx,sub]", 2, 3, 0, ARG_MAGIC|MDB_INDEX,
  58                 mdb_cf_gen, "( OLcfgDbAt:0.2 NAME 'olcDbIndex' "
  59                 "DESC 'Attribute index parameters' "
  60                 "EQUALITY caseIgnoreMatch "
  61                 "SYNTAX OMsDirectoryString )", NULL, NULL },
  62         { "maxsize", "size", 2, 2, 0, ARG_ULONG|ARG_MAGIC|MDB_MAXSIZE,
  63                 mdb_cf_gen, "( OLcfgDbAt:12.1 NAME 'olcDbMaxSize' "
  64                 "DESC 'Maximum size of DB in bytes' "
  65                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  66         { "mode", "mode", 2, 2, 0, ARG_MAGIC|MDB_MODE,
  67                 mdb_cf_gen, "( OLcfgDbAt:0.3 NAME 'olcDbMode' "
  68                 "DESC 'Unix permissions of database files' "
  69                 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
  70         { "searchstack", "depth", 2, 2, 0, ARG_INT|ARG_MAGIC|MDB_SSTACK,
  71                 mdb_cf_gen, "( OLcfgDbAt:1.9 NAME 'olcDbSearchStack' "
  72                 "DESC 'Depth of search stack in IDLs' "
  73                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  74         { NULL, NULL, 0, 0, 0, ARG_IGNORED,
  75                 NULL, NULL, NULL, NULL }
  76 };
  77
  78 static ConfigOCs mdbocs[] = {
  79         {
  80                 "( OLcfgDbOc:12.1 "
  81                 "NAME 'olcMdbConfig' "
  82                 "DESC 'MDB backend configuration' "
  83                 "SUP olcDatabaseConfig "
  84                 "MUST olcDbDirectory "
  85                 "MAY ( olcDbCheckpoint $ "
  86                 "olcDbNoSync $ olcDbIndex $ olcDbMaxsize $ "
  87                 "olcDbMode $ olcDbSearchStack ) )",
  88                         Cft_Database, mdbcfg },
  89         { NULL, 0, NULL }
  90 };
  91
  92 /* perform periodic syncs */
  93 static void *
  94 mdb_checkpoint( void *ctx, void *arg )
  95 {
  96         struct re_s *rtask = arg;
  97         struct mdb_info *mdb = rtask->arg;
  98
  99         mdb_env_sync( mdb->mi_dbenv, 0 );
 100         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 101         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 102         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 103         return NULL;
 104 }
 105
 106 /* reindex entries on the fly */
 107 static void *
 108 mdb_online_index( void *ctx, void *arg )
 109 {
 110 #if 0
 111         struct re_s *rtask = arg;
 112         BackendDB *be = rtask->arg;
 113         struct mdb_info *mdb = be->be_private;
 114
 115         Connection conn = {0};
 116         OperationBuffer opbuf;
 117         Operation *op;
 118
 119         DBC *curs;
 120         DBT key, data;
 121         DB_TXN *txn;
 122         DB_LOCK lock;
 123         ID id, nid;
 124         EntryInfo *ei;
 125         int rc, getnext = 1;
 126         int i;
 127
 128         connection_fake_init( &conn, &opbuf, ctx );
 129         op = &opbuf.ob_op;
 130
 131         op->o_bd = be;
 132
 133         DBTzero( &key );
 134         DBTzero( &data );
 135
 136         id = 1;
 137         key.data = &nid;
 138         key.size = key.ulen = sizeof(ID);
 139         key.flags = DB_DBT_USERMEM;
 140
 141         data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
 142         data.dlen = data.ulen = 0;
 143
 144         while ( 1 ) {
 145                 if ( slapd_shutdown )
 146                         break;
 147
 148                 rc = TXN_BEGIN( mdb->bi_dbenv, NULL, &txn, mdb->bi_db_opflags );
 149                 if ( rc )
 150                         break;
 151                 if ( getnext ) {
 152                         getnext = 0;
 153                         MDB_ID2DISK( id, &nid );
 154                         rc = mdb->bi_id2entry->bdi_db->cursor(
 155                                 mdb->bi_id2entry->bdi_db, txn, &curs, mdb->bi_db_opflags );
 156                         if ( rc ) {
 157                                 TXN_ABORT( txn );
 158                                 break;
 159                         }
 160                         rc = curs->c_get( curs, &key, &data, DB_SET_RANGE );
 161                         curs->c_close( curs );
 162                         if ( rc ) {
 163                                 TXN_ABORT( txn );
 164                                 if ( rc == DB_NOTFOUND )
 165                                         rc = 0;
 166                                 if ( rc == DB_LOCK_DEADLOCK ) {
 167                                         ldap_pvt_thread_yield();
 168                                         continue;
 169                                 }
 170                                 break;
 171                         }
 172                         MDB_DISK2ID( &nid, &id );
 173                 }
 174
 175                 ei = NULL;
 176                 rc = mdb_cache_find_id( op, txn, id, &ei, 0, &lock );
 177                 if ( rc ) {
 178                         TXN_ABORT( txn );
 179                         if ( rc == DB_LOCK_DEADLOCK ) {
 180                                 ldap_pvt_thread_yield();
 181                                 continue;
 182                         }
 183                         if ( rc == DB_NOTFOUND ) {
 184                                 id++;
 185                                 getnext = 1;
 186                                 continue;
 187                         }
 188                         break;
 189                 }
 190                 if ( ei->bei_e ) {
 191                         rc = mdb_index_entry( op, txn, MDB_INDEX_UPDATE_OP, ei->bei_e );
 192                         if ( rc == DB_LOCK_DEADLOCK ) {
 193                                 TXN_ABORT( txn );
 194                                 ldap_pvt_thread_yield();
 195                                 continue;
 196                         }
 197                         if ( rc == 0 ) {
 198                                 rc = TXN_COMMIT( txn, 0 );
 199                                 txn = NULL;
 200                         }
 201                         if ( rc )
 202                                 break;
 203                 }
 204                 id++;
 205                 getnext = 1;
 206         }
 207
 208         for ( i = 0; i < mdb->bi_nattrs; i++ ) {
 209                 if ( mdb->bi_attrs[ i ]->ai_indexmask & MDB_INDEX_DELETING
 210                         || mdb->bi_attrs[ i ]->ai_newmask == 0 )
 211                 {
 212                         continue;
 213                 }
 214                 mdb->bi_attrs[ i ]->ai_indexmask = mdb->bi_attrs[ i ]->ai_newmask;
 215                 mdb->bi_attrs[ i ]->ai_newmask = 0;
 216         }
 217
 218         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 219         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 220         mdb->bi_index_task = NULL;
 221         ldap_pvt_runqueue_remove( &slapd_rq, rtask );
 222         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 223
 224 #endif
 225         return NULL;
 226 }
 227
 228 /* Cleanup loose ends after Modify completes */
 229 static int
 230 mdb_cf_cleanup( ConfigArgs *c )
 231 {
 232         struct mdb_info *mdb = c->be->be_private;
 233         int rc = 0;
 234
 235         if ( mdb->mi_flags & MDB_DEL_INDEX ) {
 236                 mdb_attr_flush( mdb );
 237                 mdb->mi_flags ^= MDB_DEL_INDEX;
 238         }
 239
 240         if ( mdb->mi_flags & MDB_RE_OPEN ) {
 241                 mdb->mi_flags ^= MDB_RE_OPEN;
 242                 rc = c->be->bd_info->bi_db_close( c->be, &c->reply );
 243                 if ( rc == 0 )
 244                         rc = c->be->bd_info->bi_db_open( c->be, &c->reply );
 245                 /* If this fails, we need to restart */
 246                 if ( rc ) {
 247                         slapd_shutdown = 2;
 248                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
 249                                 "failed to reopen database, rc=%d", rc );
 250                         Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(mdb_cf_cleanup)
 251                                 ": %s\n", c->cr_msg, 0, 0 );
 252                         rc = LDAP_OTHER;
 253                 }
 254         }
 255         return rc;
 256 }
 257
 258 static int
 259 mdb_cf_gen( ConfigArgs *c )
 260 {
 261         struct mdb_info *mdb = c->be->be_private;
 262         int rc;
 263
 264         if ( c->op == SLAP_CONFIG_EMIT ) {
 265                 rc = 0;
 266                 switch( c->type ) {
 267                 case MDB_MODE: {
 268                         char buf[64];
 269                         struct berval bv;
 270                         bv.bv_len = snprintf( buf, sizeof(buf), "0%o", mdb->mi_dbenv_mode );
 271                         if ( bv.bv_len > 0 && bv.bv_len < sizeof(buf) ) {
 272                                 bv.bv_val = buf;
 273                                 value_add_one( &c->rvalue_vals, &bv );
 274                         } else {
 275                                 rc = 1;
 276                         }
 277                         } break;
 278
 279                 case MDB_CHKPT:
 280                         if ( mdb->mi_txn_cp ) {
 281                                 char buf[64];
 282                                 struct berval bv;
 283                                 bv.bv_len = snprintf( buf, sizeof(buf), "%ld %ld",
 284                                         (long) mdb->mi_txn_cp_kbyte, (long) mdb->mi_txn_cp_min );
 285                                 if ( bv.bv_len > 0 && bv.bv_len < sizeof(buf) ) {
 286                                         bv.bv_val = buf;
 287                                         value_add_one( &c->rvalue_vals, &bv );
 288                                 } else {
 289                                         rc = 1;
 290                                 }
 291                         } else {
 292                                 rc = 1;
 293                         }
 294                         break;
 295
 296                 case MDB_DIRECTORY:
 297                         if ( mdb->mi_dbenv_home ) {
 298                                 c->value_string = ch_strdup( mdb->mi_dbenv_home );
 299                         } else {
 300                                 rc = 1;
 301                         }
 302                         break;
 303
 304                 case MDB_DBNOSYNC:
 305                         if ( mdb->mi_dbenv_flags & MDB_NOSYNC )
 306                                 c->value_int = 1;
 307                         break;
 308
 309                 case MDB_INDEX:
 310                         mdb_attr_index_unparse( mdb, &c->rvalue_vals );
 311                         if ( !c->rvalue_vals ) rc = 1;
 312                         break;
 313
 314                 case MDB_SSTACK:
 315                         c->value_int = mdb->mi_search_stack_depth;
 316                         break;
 317
 318                 case MDB_MAXSIZE:
 319                         c->value_ulong = mdb->mi_mapsize;
 320                         break;
 321                 }
 322                 return rc;
 323         } else if ( c->op == LDAP_MOD_DELETE ) {
 324                 rc = 0;
 325                 switch( c->type ) {
 326                 case MDB_MODE:
 327 #if 0
 328                         /* FIXME: does it make any sense to change the mode,
 329                          * if we don't exec a chmod()? */
 330                         mdb->bi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
 331                         break;
 332 #endif
 333
 334                 /* single-valued no-ops */
 335                 case MDB_SSTACK:
 336                 case MDB_MAXSIZE:
 337                         break;
 338
 339                 case MDB_CHKPT:
 340                         if ( mdb->mi_txn_cp_task ) {
 341                                 struct re_s *re = mdb->mi_txn_cp_task;
 342                                 mdb->mi_txn_cp_task = NULL;
 343                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 344                                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
 345                                         ldap_pvt_runqueue_stoptask( &slapd_rq, re );
 346                                 ldap_pvt_runqueue_remove( &slapd_rq, re );
 347                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 348                         }
 349                         mdb->mi_txn_cp = 0;
 350                         break;
 351                 case MDB_DIRECTORY:
 352                         mdb->mi_flags |= MDB_RE_OPEN;
 353                         ch_free( mdb->mi_dbenv_home );
 354                         mdb->mi_dbenv_home = NULL;
 355                         c->cleanup = mdb_cf_cleanup;
 356                         ldap_pvt_thread_pool_purgekey( mdb->mi_dbenv );
 357                         break;
 358                 case MDB_DBNOSYNC:
 359                         mdb_env_set_flags( mdb->mi_dbenv, MDB_NOSYNC, 0 );
 360                         break;
 361                 case MDB_INDEX:
 362                         if ( c->valx == -1 ) {
 363                                 int i;
 364
 365                                 /* delete all (FIXME) */
 366                                 for ( i = 0; i < mdb->mi_nattrs; i++ ) {
 367                                         mdb->mi_attrs[i]->ai_indexmask |= MDB_INDEX_DELETING;
 368                                 }
 369                                 mdb->mi_flags |= MDB_DEL_INDEX;
 370                                 c->cleanup = mdb_cf_cleanup;
 371
 372                         } else {
 373                                 struct berval bv, def = BER_BVC("default");
 374                                 char *ptr;
 375
 376                                 for (ptr = c->line; !isspace( (unsigned char) *ptr ); ptr++);
 377
 378                                 bv.bv_val = c->line;
 379                                 bv.bv_len = ptr - bv.bv_val;
 380                                 if ( bvmatch( &bv, &def )) {
 381                                         mdb->mi_defaultmask = 0;
 382
 383                                 } else {
 384                                         int i;
 385                                         char **attrs;
 386                                         char sep;
 387
 388                                         sep = bv.bv_val[ bv.bv_len ];
 389                                         bv.bv_val[ bv.bv_len ] = '\0';
 390                                         attrs = ldap_str2charray( bv.bv_val, "," );
 391
 392                                         for ( i = 0; attrs[ i ]; i++ ) {
 393                                                 AttributeDescription *ad = NULL;
 394                                                 const char *text;
 395                                                 AttrInfo *ai;
 396
 397                                                 slap_str2ad( attrs[ i ], &ad, &text );
 398                                                 /* if we got here... */
 399                                                 assert( ad != NULL );
 400
 401                                                 ai = mdb_attr_mask( mdb, ad );
 402                                                 /* if we got here... */
 403                                                 assert( ai != NULL );
 404
 405                                                 ai->ai_indexmask |= MDB_INDEX_DELETING;
 406                                                 mdb->mi_flags |= MDB_DEL_INDEX;
 407                                                 c->cleanup = mdb_cf_cleanup;
 408                                         }
 409
 410                                         bv.bv_val[ bv.bv_len ] = sep;
 411                                         ldap_charray_free( attrs );
 412                                 }
 413                         }
 414                         break;
 415                 }
 416                 return rc;
 417         }
 418
 419         switch( c->type ) {
 420         case MDB_MODE:
 421                 if ( ASCII_DIGIT( c->argv[1][0] ) ) {
 422                         long mode;
 423                         char *next;
 424                         errno = 0;
 425                         mode = strtol( c->argv[1], &next, 0 );
 426                         if ( errno != 0 || next == c->argv[1] || next[0] != '\0' ) {
 427                                 fprintf( stderr, "%s: "
 428                                         "unable to parse mode=\"%s\".\n",
 429                                         c->log, c->argv[1] );
 430                                 return 1;
 431                         }
 432                         mdb->mi_dbenv_mode = mode;
 433
 434                 } else {
 435                         char *m = c->argv[1];
 436                         int who, what, mode = 0;
 437
 438                         if ( strlen( m ) != STRLENOF("-rwxrwxrwx") ) {
 439                                 return 1;
 440                         }
 441
 442                         if ( m[0] != '-' ) {
 443                                 return 1;
 444                         }
 445
 446                         m++;
 447                         for ( who = 0; who < 3; who++ ) {
 448                                 for ( what = 0; what < 3; what++, m++ ) {
 449                                         if ( m[0] == '-' ) {
 450                                                 continue;
 451                                         } else if ( m[0] != "rwx"[what] ) {
 452                                                 return 1;
 453                                         }
 454                                         mode += ((1 << (2 - what)) << 3*(2 - who));
 455                                 }
 456                         }
 457                         mdb->mi_dbenv_mode = mode;
 458                 }
 459                 break;
 460         case MDB_CHKPT: {
 461                 long    l;
 462                 mdb->mi_txn_cp = 1;
 463                 if ( lutil_atolx( &l, c->argv[1], 0 ) != 0 ) {
 464                         fprintf( stderr, "%s: "
 465                                 "invalid kbyte \"%s\" in \"checkpoint\".\n",
 466                                 c->log, c->argv[1] );
 467                         return 1;
 468                 }
 469                 mdb->mi_txn_cp_kbyte = l;
 470                 if ( lutil_atolx( &l, c->argv[2], 0 ) != 0 ) {
 471                         fprintf( stderr, "%s: "
 472                                 "invalid minutes \"%s\" in \"checkpoint\".\n",
 473                                 c->log, c->argv[2] );
 474                         return 1;
 475                 }
 476                 mdb->mi_txn_cp_min = l;
 477                 /* If we're in server mode and time-based checkpointing is enabled,
 478                  * submit a task to perform periodic checkpoints.
 479                  */
 480                 if ((slapMode & SLAP_SERVER_MODE) && mdb->mi_txn_cp_min ) {
 481                         struct re_s *re = mdb->mi_txn_cp_task;
 482                         if ( re ) {
 483                                 re->interval.tv_sec = mdb->mi_txn_cp_min * 60;
 484                         } else {
 485                                 if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 486                                         fprintf( stderr, "%s: "
 487                                                 "\"checkpoint\" must occur after \"suffix\".\n",
 488                                                 c->log );
 489                                         return 1;
 490                                 }
 491                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 492                                 mdb->mi_txn_cp_task = ldap_pvt_runqueue_insert( &slapd_rq,
 493                                         mdb->mi_txn_cp_min * 60, mdb_checkpoint, mdb,
 494                                         LDAP_XSTRING(mdb_checkpoint), c->be->be_suffix[0].bv_val );
 495                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 496                         }
 497                 }
 498                 } break;
 499
 500         case MDB_DIRECTORY: {
 501                 FILE *f;
 502                 char *ptr, *testpath;
 503                 int len;
 504
 505                 len = strlen( c->value_string );
 506                 testpath = ch_malloc( len + STRLENOF(LDAP_DIRSEP) + STRLENOF("DUMMY") + 1 );
 507                 ptr = lutil_strcopy( testpath, c->value_string );
 508                 *ptr++ = LDAP_DIRSEP[0];
 509                 strcpy( ptr, "DUMMY" );
 510                 f = fopen( testpath, "w" );
 511                 if ( f ) {
 512                         fclose( f );
 513                         unlink( testpath );
 514                 }
 515                 ch_free( testpath );
 516                 if ( !f ) {
 517                         snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s: invalid path: %s",
 518                                 c->log, strerror( errno ));
 519                         Debug( LDAP_DEBUG_ANY, "%s\n", c->cr_msg, 0, 0 );
 520                         return -1;
 521                 }
 522
 523                 if ( mdb->mi_dbenv_home )
 524                         ch_free( mdb->mi_dbenv_home );
 525                 mdb->mi_dbenv_home = c->value_string;
 526
 527                 }
 528                 break;
 529
 530         case MDB_DBNOSYNC:
 531                 if ( c->value_int )
 532                         mdb->mi_dbenv_flags |= MDB_NOSYNC;
 533                 else
 534                         mdb->mi_dbenv_flags ^= MDB_NOSYNC;
 535                 if ( mdb->mi_flags & MDB_IS_OPEN ) {
 536                         mdb_env_set_flags( mdb->mi_dbenv, MDB_NOSYNC,
 537                                 c->value_int );
 538                 }
 539                 break;
 540
 541         case MDB_INDEX:
 542                 rc = mdb_attr_index_config( mdb, c->fname, c->lineno,
 543                         c->argc - 1, &c->argv[1], &c->reply);
 544
 545                 if( rc != LDAP_SUCCESS ) return 1;
 546                 if (( mdb->mi_flags & MDB_IS_OPEN ) && !mdb->mi_index_task ) {
 547                         /* Start the task as soon as we finish here. Set a long
 548                          * interval (10 hours) so that it only gets scheduled once.
 549                          */
 550                         if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 551                                 fprintf( stderr, "%s: "
 552                                         "\"index\" must occur after \"suffix\".\n",
 553                                         c->log );
 554                                 return 1;
 555                         }
 556                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 557                         mdb->mi_index_task = ldap_pvt_runqueue_insert( &slapd_rq, 36000,
 558                                 mdb_online_index, c->be,
 559                                 LDAP_XSTRING(mdb_online_index), c->be->be_suffix[0].bv_val );
 560                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 561                 }
 562                 break;
 563
 564         case MDB_SSTACK:
 565                 if ( c->value_int < MINIMUM_SEARCH_STACK_DEPTH ) {
 566                         fprintf( stderr,
 567                 "%s: depth %d too small, using %d\n",
 568                         c->log, c->value_int, MINIMUM_SEARCH_STACK_DEPTH );
 569                         c->value_int = MINIMUM_SEARCH_STACK_DEPTH;
 570                 }
 571                 mdb->mi_search_stack_depth = c->value_int;
 572                 break;
 573
 574         case MDB_MAXSIZE:
 575                 mdb->mi_mapsize = c->value_ulong;
 576                 if ( mdb->mi_flags & MDB_IS_OPEN )
 577                         mdb->mi_flags |= MDB_RE_OPEN;
 578                 break;
 579
 580         }
 581         return 0;
 582 }
 583
 584 int mdb_back_init_cf( BackendInfo *bi )
 585 {
 586         int rc;
 587         bi->bi_cf_ocs = mdbocs;
 588
 589         rc = config_register_schema( mdbcfg, mdbocs );
 590         if ( rc ) return rc;
 591         return 0;
 592 }