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 2000-2008 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-bdb.h"
  25
  26 #include "config.h"
  27
  28 #include "lutil.h"
  29 #include "ldap_rq.h"
  30
  31 #ifdef DB_DIRTY_READ
  32 #       define  SLAP_BDB_ALLOW_DIRTY_READ
  33 #endif
  34
  35 #define bdb_cf_gen              BDB_SYMBOL(cf_gen)
  36 #define bdb_cf_cleanup          BDB_SYMBOL(cf_cleanup)
  37 #define bdb_checkpoint          BDB_SYMBOL(checkpoint)
  38 #define bdb_online_index        BDB_SYMBOL(online_index)
  39
  40 static ConfigDriver bdb_cf_gen;
  41
  42 enum {
  43         BDB_CHKPT = 1,
  44         BDB_CONFIG,
  45         BDB_CRYPTFILE,
  46         BDB_CRYPTKEY,
  47         BDB_DIRECTORY,
  48         BDB_NOSYNC,
  49         BDB_DIRTYR,
  50         BDB_INDEX,
  51         BDB_LOCKD,
  52         BDB_SSTACK
  53 };
  54
  55 static ConfigTable bdbcfg[] = {
  56         { "directory", "dir", 2, 2, 0, ARG_STRING|ARG_MAGIC|BDB_DIRECTORY,
  57                 bdb_cf_gen, "( OLcfgDbAt:0.1 NAME 'olcDbDirectory' "
  58                         "DESC 'Directory for database content' "
  59                         "EQUALITY caseIgnoreMatch "
  60                         "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
  61         { "cachefree", "size", 2, 2, 0, ARG_UINT|ARG_OFFSET,
  62                 (void *)offsetof(struct bdb_info, bi_cache.c_minfree),
  63                 "( OLcfgDbAt:1.11 NAME 'olcDbCacheFree' "
  64                         "DESC 'Number of extra entries to free when max is reached' "
  65                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  66         { "cachesize", "size", 2, 2, 0, ARG_UINT|ARG_OFFSET,
  67                 (void *)offsetof(struct bdb_info, bi_cache.c_maxsize),
  68                 "( OLcfgDbAt:1.1 NAME 'olcDbCacheSize' "
  69                         "DESC 'Entry cache size in entries' "
  70                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  71         { "checkpoint", "kbyte> <min", 3, 3, 0, ARG_MAGIC|BDB_CHKPT,
  72                 bdb_cf_gen, "( OLcfgDbAt:1.2 NAME 'olcDbCheckpoint' "
  73                         "DESC 'Database checkpoint interval in kbytes and minutes' "
  74                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",NULL, NULL },
  75         { "cryptfile", "file", 2, 2, 0, ARG_STRING|ARG_MAGIC|BDB_CRYPTFILE,
  76                 bdb_cf_gen, "( OLcfgDbAt:1.13 NAME 'olcDbCryptFile' "
  77                         "DESC 'Pathname of file containing the DB encryption key' "
  78                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",NULL, NULL },
  79         { "cryptkey", "key", 2, 2, 0, ARG_BERVAL|ARG_MAGIC|BDB_CRYPTKEY,
  80                 bdb_cf_gen, "( OLcfgDbAt:1.14 NAME 'olcDbCryptKey' "
  81                         "DESC 'DB encryption key' "
  82                         "SYNTAX OMsOctetString SINGLE-VALUE )",NULL, NULL },
  83         { "dbconfig", "DB_CONFIG setting", 1, 0, 0, ARG_MAGIC|BDB_CONFIG,
  84                 bdb_cf_gen, "( OLcfgDbAt:1.3 NAME 'olcDbConfig' "
  85                         "DESC 'BerkeleyDB DB_CONFIG configuration directives' "
  86                         "SYNTAX OMsIA5String X-ORDERED 'VALUES' )", NULL, NULL },
  87         { "dbnosync", NULL, 1, 2, 0, ARG_ON_OFF|ARG_MAGIC|BDB_NOSYNC,
  88                 bdb_cf_gen, "( OLcfgDbAt:1.4 NAME 'olcDbNoSync' "
  89                         "DESC 'Disable synchronous database writes' "
  90                         "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  91         { "dirtyread", NULL, 1, 2, 0,
  92 #ifdef SLAP_BDB_ALLOW_DIRTY_READ
  93                 ARG_ON_OFF|ARG_MAGIC|BDB_DIRTYR, bdb_cf_gen,
  94 #else
  95                 ARG_IGNORED, NULL,
  96 #endif
  97                 "( OLcfgDbAt:1.5 NAME 'olcDbDirtyRead' "
  98                 "DESC 'Allow reads of uncommitted data' "
  99                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
 100         { "dncachesize", "size", 2, 2, 0, ARG_UINT|ARG_OFFSET,
 101                 (void *)offsetof(struct bdb_info, bi_cache.c_eimax),
 102                 "( OLcfgDbAt:1.12 NAME 'olcDbDNcacheSize' "
 103                         "DESC 'DN cache size' "
 104                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 105         { "idlcachesize", "size", 2, 2, 0, ARG_UINT|ARG_OFFSET,
 106                 (void *)offsetof(struct bdb_info, bi_idl_cache_max_size),
 107                 "( OLcfgDbAt:1.6 NAME 'olcDbIDLcacheSize' "
 108                 "DESC 'IDL cache size in IDLs' "
 109                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 110         { "index", "attr> <[pres,eq,approx,sub]", 2, 3, 0, ARG_MAGIC|BDB_INDEX,
 111                 bdb_cf_gen, "( OLcfgDbAt:0.2 NAME 'olcDbIndex' "
 112                 "DESC 'Attribute index parameters' "
 113                 "EQUALITY caseIgnoreMatch "
 114                 "SYNTAX OMsDirectoryString )", NULL, NULL },
 115         { "linearindex", NULL, 1, 2, 0, ARG_ON_OFF|ARG_OFFSET,
 116                 (void *)offsetof(struct bdb_info, bi_linear_index),
 117                 "( OLcfgDbAt:1.7 NAME 'olcDbLinearIndex' "
 118                 "DESC 'Index attributes one at a time' "
 119                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
 120         { "lockdetect", "policy", 2, 2, 0, ARG_MAGIC|BDB_LOCKD,
 121                 bdb_cf_gen, "( OLcfgDbAt:1.8 NAME 'olcDbLockDetect' "
 122                 "DESC 'Deadlock detection algorithm' "
 123                 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
 124         { "mode", "mode", 2, 2, 0, ARG_INT|ARG_OFFSET,
 125                 (void *)offsetof(struct bdb_info, bi_dbenv_mode),
 126                 "( OLcfgDbAt:0.3 NAME 'olcDbMode' "
 127                 "DESC 'Unix permissions of database files' "
 128                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 129         { "searchstack", "depth", 2, 2, 0, ARG_INT|ARG_MAGIC|BDB_SSTACK,
 130                 bdb_cf_gen, "( OLcfgDbAt:1.9 NAME 'olcDbSearchStack' "
 131                 "DESC 'Depth of search stack in IDLs' "
 132                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 133         { "shm_key", "key", 2, 2, 0, ARG_LONG|ARG_OFFSET,
 134                 (void *)offsetof(struct bdb_info, bi_shm_key),
 135                 "( OLcfgDbAt:1.10 NAME 'olcDbShmKey' "
 136                 "DESC 'Key for shared memory region' "
 137                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 138         { NULL, NULL, 0, 0, 0, ARG_IGNORED,
 139                 NULL, NULL, NULL, NULL }
 140 };
 141
 142 static ConfigOCs bdbocs[] = {
 143         {
 144 #ifdef BDB_HIER
 145                 "( OLcfgDbOc:1.2 "
 146                 "NAME 'olcHdbConfig' "
 147                 "DESC 'HDB backend configuration' "
 148 #else
 149                 "( OLcfgDbOc:1.1 "
 150                 "NAME 'olcBdbConfig' "
 151                 "DESC 'BDB backend configuration' "
 152 #endif
 153                 "SUP olcDatabaseConfig "
 154                 "MUST olcDbDirectory "
 155                 "MAY ( olcDbCacheSize $ olcDbCheckpoint $ olcDbConfig $ "
 156                 "olcDbCryptFile $ olcDbCryptKey $ "
 157                 "olcDbNoSync $ olcDbDirtyRead $ olcDbIDLcacheSize $ "
 158                 "olcDbIndex $ olcDbLinearIndex $ olcDbLockDetect $ "
 159                 "olcDbMode $ olcDbSearchStack $ olcDbShmKey $ "
 160                 "olcDbCacheFree $ olcDbDNcacheSize ) )",
 161                         Cft_Database, bdbcfg },
 162         { NULL, 0, NULL }
 163 };
 164
 165 static slap_verbmasks bdb_lockd[] = {
 166         { BER_BVC("default"), DB_LOCK_DEFAULT },
 167         { BER_BVC("oldest"), DB_LOCK_OLDEST },
 168         { BER_BVC("random"), DB_LOCK_RANDOM },
 169         { BER_BVC("youngest"), DB_LOCK_YOUNGEST },
 170         { BER_BVC("fewest"), DB_LOCK_MINLOCKS },
 171         { BER_BVNULL, 0 }
 172 };
 173
 174 /* perform periodic checkpoints */
 175 static void *
 176 bdb_checkpoint( void *ctx, void *arg )
 177 {
 178         struct re_s *rtask = arg;
 179         struct bdb_info *bdb = rtask->arg;
 180
 181         TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte,
 182                 bdb->bi_txn_cp_min, 0 );
 183         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 184         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 185         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 186         return NULL;
 187 }
 188
 189 /* reindex entries on the fly */
 190 static void *
 191 bdb_online_index( void *ctx, void *arg )
 192 {
 193         struct re_s *rtask = arg;
 194         BackendDB *be = rtask->arg;
 195         struct bdb_info *bdb = be->be_private;
 196
 197         Connection conn = {0};
 198         OperationBuffer opbuf;
 199         Operation *op;
 200
 201         DBC *curs;
 202         DBT key, data;
 203         DB_TXN *txn;
 204         DB_LOCK lock;
 205         ID id, nid;
 206         EntryInfo *ei;
 207         int rc, getnext = 1;
 208         int i;
 209
 210         connection_fake_init( &conn, &opbuf, ctx );
 211         op = &opbuf.ob_op;
 212
 213         op->o_bd = be;
 214
 215         DBTzero( &key );
 216         DBTzero( &data );
 217
 218         id = 1;
 219         key.data = &nid;
 220         key.size = key.ulen = sizeof(ID);
 221         key.flags = DB_DBT_USERMEM;
 222
 223         data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
 224         data.dlen = data.ulen = 0;
 225
 226         while ( 1 ) {
 227                 if ( slapd_shutdown )
 228                         break;
 229
 230                 rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &txn, bdb->bi_db_opflags );
 231                 if ( rc )
 232                         break;
 233                 if ( getnext ) {
 234                         getnext = 0;
 235                         BDB_ID2DISK( id, &nid );
 236                         rc = bdb->bi_id2entry->bdi_db->cursor(
 237                                 bdb->bi_id2entry->bdi_db, txn, &curs, bdb->bi_db_opflags );
 238                         if ( rc ) {
 239                                 TXN_ABORT( txn );
 240                                 break;
 241                         }
 242                         rc = curs->c_get( curs, &key, &data, DB_SET_RANGE );
 243                         curs->c_close( curs );
 244                         if ( rc ) {
 245                                 TXN_ABORT( txn );
 246                                 if ( rc == DB_NOTFOUND )
 247                                         rc = 0;
 248                                 if ( rc == DB_LOCK_DEADLOCK ) {
 249                                         ldap_pvt_thread_yield();
 250                                         continue;
 251                                 }
 252                                 break;
 253                         }
 254                         BDB_DISK2ID( &nid, &id );
 255                 }
 256
 257                 ei = NULL;
 258                 rc = bdb_cache_find_id( op, txn, id, &ei, 0, &lock );
 259                 if ( rc ) {
 260                         TXN_ABORT( txn );
 261                         if ( rc == DB_LOCK_DEADLOCK ) {
 262                                 ldap_pvt_thread_yield();
 263                                 continue;
 264                         }
 265                         if ( rc == DB_NOTFOUND ) {
 266                                 id++;
 267                                 getnext = 1;
 268                                 continue;
 269                         }
 270                         break;
 271                 }
 272                 if ( ei->bei_e ) {
 273                         rc = bdb_index_entry( op, txn, BDB_INDEX_UPDATE_OP, ei->bei_e );
 274                         if ( rc == DB_LOCK_DEADLOCK ) {
 275                                 TXN_ABORT( txn );
 276                                 ldap_pvt_thread_yield();
 277                                 continue;
 278                         }
 279                         if ( rc == 0 ) {
 280                                 rc = TXN_COMMIT( txn, 0 );
 281                                 txn = NULL;
 282                         }
 283                         if ( rc )
 284                                 break;
 285                 }
 286                 id++;
 287                 getnext = 1;
 288         }
 289
 290         for ( i = 0; i < bdb->bi_nattrs; i++ ) {
 291                 if ( bdb->bi_attrs[ i ]->ai_indexmask & BDB_INDEX_DELETING
 292                         || bdb->bi_attrs[ i ]->ai_newmask == 0 )
 293                 {
 294                         continue;
 295                 }
 296                 bdb->bi_attrs[ i ]->ai_indexmask = bdb->bi_attrs[ i ]->ai_newmask;
 297                 bdb->bi_attrs[ i ]->ai_newmask = 0;
 298         }
 299
 300         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 301         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 302         bdb->bi_index_task = NULL;
 303         ldap_pvt_runqueue_remove( &slapd_rq, rtask );
 304         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 305
 306         return NULL;
 307 }
 308
 309 /* Cleanup loose ends after Modify completes */
 310 static int
 311 bdb_cf_cleanup( ConfigArgs *c )
 312 {
 313         struct bdb_info *bdb = c->be->be_private;
 314         int rc = 0;
 315
 316         if ( bdb->bi_flags & BDB_UPD_CONFIG ) {
 317                 if ( bdb->bi_db_config ) {
 318                         int i;
 319                         FILE *f = fopen( bdb->bi_db_config_path, "w" );
 320                         if ( f ) {
 321                                 for (i=0; bdb->bi_db_config[i].bv_val; i++)
 322                                         fprintf( f, "%s\n", bdb->bi_db_config[i].bv_val );
 323                                 fclose( f );
 324                         }
 325                 } else {
 326                         unlink( bdb->bi_db_config_path );
 327                 }
 328                 bdb->bi_flags ^= BDB_UPD_CONFIG;
 329         }
 330
 331         if ( bdb->bi_flags & BDB_DEL_INDEX ) {
 332                 bdb_attr_flush( bdb );
 333                 bdb->bi_flags ^= BDB_DEL_INDEX;
 334         }
 335
 336         if ( bdb->bi_flags & BDB_RE_OPEN ) {
 337                 bdb->bi_flags ^= BDB_RE_OPEN;
 338                 rc = c->be->bd_info->bi_db_close( c->be, &c->reply );
 339                 if ( rc == 0 )
 340                         rc = c->be->bd_info->bi_db_open( c->be, &c->reply );
 341                 /* If this fails, we need to restart */
 342                 if ( rc ) {
 343                         slapd_shutdown = 2;
 344                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
 345                                 "failed to reopen database, rc=%d", rc );
 346                         Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(bdb_cf_cleanup)
 347                                 ": %s\n", c->cr_msg, 0, 0 );
 348                         rc = LDAP_OTHER;
 349                 }
 350         }
 351         return rc;
 352 }
 353
 354 static int
 355 bdb_cf_gen( ConfigArgs *c )
 356 {
 357         struct bdb_info *bdb = c->be->be_private;
 358         int rc;
 359
 360         if ( c->op == SLAP_CONFIG_EMIT ) {
 361                 rc = 0;
 362                 switch( c->type ) {
 363                 case BDB_CHKPT:
 364                         if ( bdb->bi_txn_cp ) {
 365                                 char buf[64];
 366                                 struct berval bv;
 367                                 bv.bv_len = sprintf( buf, "%d %d", bdb->bi_txn_cp_kbyte,
 368                                         bdb->bi_txn_cp_min );
 369                                 bv.bv_val = buf;
 370                                 value_add_one( &c->rvalue_vals, &bv );
 371                         } else{
 372                                 rc = 1;
 373                         }
 374                         break;
 375
 376                 case BDB_CRYPTFILE:
 377                         if ( bdb->bi_db_crypt_file ) {
 378                                 c->value_string = ch_strdup( bdb->bi_db_crypt_file );
 379                         } else {
 380                                 rc = 1;
 381                         }
 382                         break;
 383
 384                 /* If a crypt file has been set, its contents are copied here.
 385                  * But we don't want the key to be incorporated here.
 386                  */
 387                 case BDB_CRYPTKEY:
 388                         if ( !bdb->bi_db_crypt_file && !BER_BVISNULL( &bdb->bi_db_crypt_key )) {
 389                                 value_add_one( &c->rvalue_vals, &bdb->bi_db_crypt_key );
 390                         } else {
 391                                 rc = 1;
 392                         }
 393                         break;
 394
 395                 case BDB_DIRECTORY:
 396                         if ( bdb->bi_dbenv_home ) {
 397                                 c->value_string = ch_strdup( bdb->bi_dbenv_home );
 398                         } else {
 399                                 rc = 1;
 400                         }
 401                         break;
 402
 403                 case BDB_CONFIG:
 404                         if ( !( bdb->bi_flags & BDB_IS_OPEN )
 405                                 && !bdb->bi_db_config )
 406                         {
 407                                 char    buf[SLAP_TEXT_BUFLEN];
 408                                 FILE *f = fopen( bdb->bi_db_config_path, "r" );
 409                                 struct berval bv;
 410
 411                                 if ( f ) {
 412                                         bdb->bi_flags |= BDB_HAS_CONFIG;
 413                                         while ( fgets( buf, sizeof(buf), f )) {
 414                                                 ber_str2bv( buf, 0, 1, &bv );
 415                                                 if ( bv.bv_len > 0 && bv.bv_val[bv.bv_len-1] == '\n' ) {
 416                                                         bv.bv_len--;
 417                                                         bv.bv_val[bv.bv_len] = '\0';
 418                                                 }
 419                                                 /* shouldn't need this, but ... */
 420                                                 if ( bv.bv_len > 0 && bv.bv_val[bv.bv_len-1] == '\r' ) {
 421                                                         bv.bv_len--;
 422                                                         bv.bv_val[bv.bv_len] = '\0';
 423                                                 }
 424                                                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 425                                         }
 426                                         fclose( f );
 427                                 }
 428                         }
 429                         if ( bdb->bi_db_config ) {
 430                                 int i;
 431                                 struct berval bv;
 432
 433                                 bv.bv_val = c->log;
 434                                 for (i=0; !BER_BVISNULL(&bdb->bi_db_config[i]); i++) {
 435                                         bv.bv_len = sprintf( bv.bv_val, "{%d}%s", i,
 436                                                 bdb->bi_db_config[i].bv_val );
 437                                         value_add_one( &c->rvalue_vals, &bv );
 438                                 }
 439                         }
 440                         if ( !c->rvalue_vals ) rc = 1;
 441                         break;
 442
 443                 case BDB_NOSYNC:
 444                         if ( bdb->bi_dbenv_xflags & DB_TXN_NOSYNC )
 445                                 c->value_int = 1;
 446                         break;
 447
 448                 case BDB_INDEX:
 449                         bdb_attr_index_unparse( bdb, &c->rvalue_vals );
 450                         if ( !c->rvalue_vals ) rc = 1;
 451                         break;
 452
 453                 case BDB_LOCKD:
 454                         rc = 1;
 455                         if ( bdb->bi_lock_detect != DB_LOCK_DEFAULT ) {
 456                                 int i;
 457                                 for (i=0; !BER_BVISNULL(&bdb_lockd[i].word); i++) {
 458                                         if ( bdb->bi_lock_detect == bdb_lockd[i].mask ) {
 459                                                 value_add_one( &c->rvalue_vals, &bdb_lockd[i].word );
 460                                                 rc = 0;
 461                                                 break;
 462                                         }
 463                                 }
 464                         }
 465                         break;
 466
 467                 case BDB_SSTACK:
 468                         c->value_int = bdb->bi_search_stack_depth;
 469                         break;
 470                 }
 471                 return rc;
 472         } else if ( c->op == LDAP_MOD_DELETE ) {
 473                 rc = 0;
 474                 switch( c->type ) {
 475                 /* single-valued no-ops */
 476                 case BDB_LOCKD:
 477                 case BDB_SSTACK:
 478                         break;
 479
 480                 case BDB_CHKPT:
 481                         if ( bdb->bi_txn_cp_task ) {
 482                                 struct re_s *re = bdb->bi_txn_cp_task;
 483                                 bdb->bi_txn_cp_task = NULL;
 484                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 485                                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
 486                                         ldap_pvt_runqueue_stoptask( &slapd_rq, re );
 487                                 ldap_pvt_runqueue_remove( &slapd_rq, re );
 488                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 489                         }
 490                         bdb->bi_txn_cp = 0;
 491                         break;
 492                 case BDB_CONFIG:
 493                         if ( c->valx < 0 ) {
 494                                 ber_bvarray_free( bdb->bi_db_config );
 495                                 bdb->bi_db_config = NULL;
 496                         } else {
 497                                 int i = c->valx;
 498                                 ch_free( bdb->bi_db_config[i].bv_val );
 499                                 for (; bdb->bi_db_config[i].bv_val; i++)
 500                                         bdb->bi_db_config[i] = bdb->bi_db_config[i+1];
 501                         }
 502                         bdb->bi_flags |= BDB_UPD_CONFIG;
 503                         c->cleanup = bdb_cf_cleanup;
 504                         break;
 505                 /* Doesn't really make sense to change these on the fly;
 506                  * the entire DB must be dumped and reloaded
 507                  */
 508                 case BDB_CRYPTFILE:
 509                         if ( bdb->bi_db_crypt_file ) {
 510                                 ch_free( bdb->bi_db_crypt_file );
 511                                 bdb->bi_db_crypt_file = NULL;
 512                         }
 513                         /* FALLTHRU */
 514                 case BDB_CRYPTKEY:
 515                         if ( !BER_BVISNULL( &bdb->bi_db_crypt_key )) {
 516                                 ch_free( bdb->bi_db_crypt_key.bv_val );
 517                                 BER_BVZERO( &bdb->bi_db_crypt_key );
 518                         }
 519                         break;
 520                 case BDB_DIRECTORY:
 521                         bdb->bi_flags |= BDB_RE_OPEN;
 522                         bdb->bi_flags ^= BDB_HAS_CONFIG;
 523                         ch_free( bdb->bi_dbenv_home );
 524                         bdb->bi_dbenv_home = NULL;
 525                         ch_free( bdb->bi_db_config_path );
 526                         bdb->bi_db_config_path = NULL;
 527                         c->cleanup = bdb_cf_cleanup;
 528                         ldap_pvt_thread_pool_purgekey( bdb->bi_dbenv );
 529                         break;
 530                 case BDB_NOSYNC:
 531                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC, 0 );
 532                         break;
 533                 case BDB_INDEX:
 534                         if ( c->valx == -1 ) {
 535                                 int i;
 536
 537                                 /* delete all (FIXME) */
 538                                 for ( i = 0; i < bdb->bi_nattrs; i++ ) {
 539                                         bdb->bi_attrs[i]->ai_indexmask |= BDB_INDEX_DELETING;
 540                                 }
 541                                 bdb->bi_flags |= BDB_DEL_INDEX;
 542                                 c->cleanup = bdb_cf_cleanup;
 543
 544                         } else {
 545                                 struct berval bv, def = BER_BVC("default");
 546                                 char *ptr;
 547
 548                                 for (ptr = c->line; !isspace( (unsigned char) *ptr ); ptr++);
 549
 550                                 bv.bv_val = c->line;
 551                                 bv.bv_len = ptr - bv.bv_val;
 552                                 if ( bvmatch( &bv, &def )) {
 553                                         bdb->bi_defaultmask = 0;
 554
 555                                 } else {
 556                                         int i;
 557                                         char **attrs;
 558                                         char sep;
 559
 560                                         sep = bv.bv_val[ bv.bv_len ];
 561                                         bv.bv_val[ bv.bv_len ] = '\0';
 562                                         attrs = ldap_str2charray( bv.bv_val, "," );
 563
 564                                         for ( i = 0; attrs[ i ]; i++ ) {
 565                                                 AttributeDescription *ad = NULL;
 566                                                 const char *text;
 567                                                 AttrInfo *ai;
 568
 569                                                 slap_str2ad( attrs[ i ], &ad, &text );
 570                                                 /* if we got here... */
 571                                                 assert( ad != NULL );
 572
 573                                                 ai = bdb_attr_mask( bdb, ad );
 574                                                 /* if we got here... */
 575                                                 assert( ai != NULL );
 576
 577                                                 ai->ai_indexmask |= BDB_INDEX_DELETING;
 578                                                 bdb->bi_flags |= BDB_DEL_INDEX;
 579                                                 c->cleanup = bdb_cf_cleanup;
 580                                         }
 581
 582                                         bv.bv_val[ bv.bv_len ] = sep;
 583                                         ldap_charray_free( attrs );
 584                                 }
 585                         }
 586                         break;
 587                 }
 588                 return rc;
 589         }
 590
 591         switch( c->type ) {
 592         case BDB_CHKPT: {
 593                 long    l;
 594                 bdb->bi_txn_cp = 1;
 595                 if ( lutil_atolx( &l, c->argv[1], 0 ) != 0 ) {
 596                         fprintf( stderr, "%s: "
 597                                 "invalid kbyte \"%s\" in \"checkpoint\".\n",
 598                                 c->log, c->argv[1] );
 599                         return 1;
 600                 }
 601                 bdb->bi_txn_cp_kbyte = l;
 602                 if ( lutil_atolx( &l, c->argv[2], 0 ) != 0 ) {
 603                         fprintf( stderr, "%s: "
 604                                 "invalid minutes \"%s\" in \"checkpoint\".\n",
 605                                 c->log, c->argv[2] );
 606                         return 1;
 607                 }
 608                 bdb->bi_txn_cp_min = l;
 609                 /* If we're in server mode and time-based checkpointing is enabled,
 610                  * submit a task to perform periodic checkpoints.
 611                  */
 612                 if ((slapMode & SLAP_SERVER_MODE) && bdb->bi_txn_cp_min ) {
 613                         struct re_s *re = bdb->bi_txn_cp_task;
 614                         if ( re ) {
 615                                 re->interval.tv_sec = bdb->bi_txn_cp_min * 60;
 616                         } else {
 617                                 if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 618                                         fprintf( stderr, "%s: "
 619                                                 "\"checkpoint\" must occur after \"suffix\".\n",
 620                                                 c->log );
 621                                         return 1;
 622                                 }
 623                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 624                                 bdb->bi_txn_cp_task = ldap_pvt_runqueue_insert( &slapd_rq,
 625                                         bdb->bi_txn_cp_min * 60, bdb_checkpoint, bdb,
 626                                         LDAP_XSTRING(bdb_checkpoint), c->be->be_suffix[0].bv_val );
 627                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 628                         }
 629                 }
 630                 } break;
 631
 632         case BDB_CONFIG: {
 633                 char *ptr = c->line;
 634                 struct berval bv;
 635
 636                 if ( c->op == SLAP_CONFIG_ADD ) {
 637                         ptr += STRLENOF("dbconfig");
 638                         while (!isspace((unsigned char)*ptr)) ptr++;
 639                         while (isspace((unsigned char)*ptr)) ptr++;
 640                 }
 641
 642                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 643                         bdb->bi_flags |= BDB_UPD_CONFIG;
 644                         c->cleanup = bdb_cf_cleanup;
 645                 } else {
 646                 /* If we're just starting up...
 647                  */
 648                         FILE *f;
 649                         /* If a DB_CONFIG file exists, or we don't know the path
 650                          * to the DB_CONFIG file, ignore these directives
 651                          */
 652                         if (( bdb->bi_flags & BDB_HAS_CONFIG ) || !bdb->bi_db_config_path )
 653                                 break;
 654                         f = fopen( bdb->bi_db_config_path, "a" );
 655                         if ( f ) {
 656                                 /* FIXME: EBCDIC probably needs special handling */
 657                                 fprintf( f, "%s\n", ptr );
 658                                 fclose( f );
 659                         }
 660                 }
 661                 ber_str2bv( ptr, 0, 1, &bv );
 662                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 663                 }
 664                 break;
 665
 666         case BDB_CRYPTFILE:
 667                 rc = lutil_get_filed_password( c->value_string, &bdb->bi_db_crypt_key );
 668                 if ( rc == 0 ) {
 669                         bdb->bi_db_crypt_file = c->value_string;
 670                 }
 671                 break;
 672
 673         /* Cannot set key if file was already set */
 674         case BDB_CRYPTKEY:
 675                 if ( bdb->bi_db_crypt_file ) {
 676                         rc = 1;
 677                 } else {
 678                         bdb->bi_db_crypt_key = c->value_bv;
 679                 }
 680                 break;
 681
 682         case BDB_DIRECTORY: {
 683                 FILE *f;
 684                 char *ptr, *testpath;
 685                 int len;
 686
 687                 len = strlen( c->value_string );
 688                 testpath = ch_malloc( len + STRLENOF(LDAP_DIRSEP) + STRLENOF("DUMMY") + 1 );
 689                 ptr = lutil_strcopy( testpath, c->value_string );
 690                 *ptr++ = LDAP_DIRSEP[0];
 691                 strcpy( ptr, "DUMMY" );
 692                 f = fopen( testpath, "w" );
 693                 if ( f ) {
 694                         fclose( f );
 695                         unlink( testpath );
 696                 }
 697                 ch_free( testpath );
 698                 if ( !f ) {
 699                         snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s: invalid path: %s",
 700                                 c->log, strerror( errno ));
 701                         Debug( LDAP_DEBUG_ANY, "%s\n", c->cr_msg, 0, 0 );
 702                         return -1;
 703                 }
 704
 705                 if ( bdb->bi_dbenv_home )
 706                         ch_free( bdb->bi_dbenv_home );
 707                 bdb->bi_dbenv_home = c->value_string;
 708
 709                 /* See if a DB_CONFIG file already exists here */
 710                 if ( bdb->bi_db_config_path )
 711                         ch_free( bdb->bi_db_config_path );
 712                 bdb->bi_db_config_path = ch_malloc( len +
 713                         STRLENOF(LDAP_DIRSEP) + STRLENOF("DB_CONFIG") + 1 );
 714                 ptr = lutil_strcopy( bdb->bi_db_config_path, bdb->bi_dbenv_home );
 715                 *ptr++ = LDAP_DIRSEP[0];
 716                 strcpy( ptr, "DB_CONFIG" );
 717
 718                 f = fopen( bdb->bi_db_config_path, "r" );
 719                 if ( f ) {
 720                         bdb->bi_flags |= BDB_HAS_CONFIG;
 721                         fclose(f);
 722                 }
 723                 }
 724                 break;
 725
 726         case BDB_NOSYNC:
 727                 if ( c->value_int )
 728                         bdb->bi_dbenv_xflags |= DB_TXN_NOSYNC;
 729                 else
 730                         bdb->bi_dbenv_xflags &= ~DB_TXN_NOSYNC;
 731                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 732                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC,
 733                                 c->value_int );
 734                 }
 735                 break;
 736
 737         case BDB_INDEX:
 738                 rc = bdb_attr_index_config( bdb, c->fname, c->lineno,
 739                         c->argc - 1, &c->argv[1] );
 740
 741                 if( rc != LDAP_SUCCESS ) return 1;
 742                 if (( bdb->bi_flags & BDB_IS_OPEN ) && !bdb->bi_index_task ) {
 743                         /* Start the task as soon as we finish here. Set a long
 744                          * interval (10 hours) so that it only gets scheduled once.
 745                          */
 746                         if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 747                                 fprintf( stderr, "%s: "
 748                                         "\"index\" must occur after \"suffix\".\n",
 749                                         c->log );
 750                                 return 1;
 751                         }
 752                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 753                         bdb->bi_index_task = ldap_pvt_runqueue_insert( &slapd_rq, 36000,
 754                                 bdb_online_index, c->be,
 755                                 LDAP_XSTRING(bdb_online_index), c->be->be_suffix[0].bv_val );
 756                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 757                 }
 758                 break;
 759
 760         case BDB_LOCKD:
 761                 rc = verb_to_mask( c->argv[1], bdb_lockd );
 762                 if ( BER_BVISNULL(&bdb_lockd[rc].word) ) {
 763                         fprintf( stderr, "%s: "
 764                                 "bad policy (%s) in \"lockDetect <policy>\" line\n",
 765                                 c->log, c->argv[1] );
 766                         return 1;
 767                 }
 768                 bdb->bi_lock_detect = rc;
 769                 break;
 770
 771         case BDB_SSTACK:
 772                 if ( c->value_int < MINIMUM_SEARCH_STACK_DEPTH ) {
 773                         fprintf( stderr,
 774                 "%s: depth %d too small, using %d\n",
 775                         c->log, c->value_int, MINIMUM_SEARCH_STACK_DEPTH );
 776                         c->value_int = MINIMUM_SEARCH_STACK_DEPTH;
 777                 }
 778                 bdb->bi_search_stack_depth = c->value_int;
 779                 break;
 780         }
 781         return 0;
 782 }
 783
 784 int bdb_back_init_cf( BackendInfo *bi )
 785 {
 786         int rc;
 787         bi->bi_cf_ocs = bdbocs;
 788
 789         rc = config_register_schema( bdbcfg, bdbocs );
 790         if ( rc ) return rc;
 791         return 0;
 792 }