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 2000-2012 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         BDB_MODE,
  54         BDB_PGSIZE,
  55         BDB_CHECKSUM
  56 };
  57
  58 static ConfigTable bdbcfg[] = {
  59         { "directory", "dir", 2, 2, 0, ARG_STRING|ARG_MAGIC|BDB_DIRECTORY,
  60                 bdb_cf_gen, "( OLcfgDbAt:0.1 NAME 'olcDbDirectory' "
  61                         "DESC 'Directory for database content' "
  62                         "EQUALITY caseIgnoreMatch "
  63                         "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
  64         { "cachefree", "size", 2, 2, 0, ARG_ULONG|ARG_OFFSET,
  65                 (void *)offsetof(struct bdb_info, bi_cache.c_minfree),
  66                 "( OLcfgDbAt:1.11 NAME 'olcDbCacheFree' "
  67                         "DESC 'Number of extra entries to free when max is reached' "
  68                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  69         { "cachesize", "size", 2, 2, 0, ARG_ULONG|ARG_OFFSET,
  70                 (void *)offsetof(struct bdb_info, bi_cache.c_maxsize),
  71                 "( OLcfgDbAt:1.1 NAME 'olcDbCacheSize' "
  72                         "DESC 'Entry cache size in entries' "
  73                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
  74         { "checkpoint", "kbyte> <min", 3, 3, 0, ARG_MAGIC|BDB_CHKPT,
  75                 bdb_cf_gen, "( OLcfgDbAt:1.2 NAME 'olcDbCheckpoint' "
  76                         "DESC 'Database checkpoint interval in kbytes and minutes' "
  77                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",NULL, NULL },
  78         { "checksum", NULL, 1, 2, 0, ARG_ON_OFF|ARG_MAGIC|BDB_CHECKSUM,
  79                 bdb_cf_gen, "( OLcfgDbAt:1.16 NAME 'olcDbChecksum' "
  80                         "DESC 'Enable database checksum validation' "
  81                         "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  82         { "cryptfile", "file", 2, 2, 0, ARG_STRING|ARG_MAGIC|BDB_CRYPTFILE,
  83                 bdb_cf_gen, "( OLcfgDbAt:1.13 NAME 'olcDbCryptFile' "
  84                         "DESC 'Pathname of file containing the DB encryption key' "
  85                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",NULL, NULL },
  86         { "cryptkey", "key", 2, 2, 0, ARG_BERVAL|ARG_MAGIC|BDB_CRYPTKEY,
  87                 bdb_cf_gen, "( OLcfgDbAt:1.14 NAME 'olcDbCryptKey' "
  88                         "DESC 'DB encryption key' "
  89                         "SYNTAX OMsOctetString SINGLE-VALUE )",NULL, NULL },
  90         { "dbconfig", "DB_CONFIG setting", 1, 0, 0, ARG_MAGIC|BDB_CONFIG,
  91                 bdb_cf_gen, "( OLcfgDbAt:1.3 NAME 'olcDbConfig' "
  92                         "DESC 'BerkeleyDB DB_CONFIG configuration directives' "
  93                         "SYNTAX OMsIA5String X-ORDERED 'VALUES' )", NULL, NULL },
  94         { "dbnosync", NULL, 1, 2, 0, ARG_ON_OFF|ARG_MAGIC|BDB_NOSYNC,
  95                 bdb_cf_gen, "( OLcfgDbAt:1.4 NAME 'olcDbNoSync' "
  96                         "DESC 'Disable synchronous database writes' "
  97                         "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  98         { "dbpagesize", "db> <size", 3, 3, 0, ARG_MAGIC|BDB_PGSIZE,
  99                 bdb_cf_gen, "( OLcfgDbAt:1.15 NAME 'olcDbPageSize' "
 100                         "DESC 'Page size of specified DB, in Kbytes' "
 101                         "EQUALITY caseExactMatch "
 102                         "SYNTAX OMsDirectoryString )", NULL, NULL },
 103         { "dirtyread", NULL, 1, 2, 0,
 104 #ifdef SLAP_BDB_ALLOW_DIRTY_READ
 105                 ARG_ON_OFF|ARG_MAGIC|BDB_DIRTYR, bdb_cf_gen,
 106 #else
 107                 ARG_IGNORED, NULL,
 108 #endif
 109                 "( OLcfgDbAt:1.5 NAME 'olcDbDirtyRead' "
 110                 "DESC 'Allow reads of uncommitted data' "
 111                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
 112         { "dncachesize", "size", 2, 2, 0, ARG_ULONG|ARG_OFFSET,
 113                 (void *)offsetof(struct bdb_info, bi_cache.c_eimax),
 114                 "( OLcfgDbAt:1.12 NAME 'olcDbDNcacheSize' "
 115                         "DESC 'DN cache size' "
 116                         "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 117         { "idlcachesize", "size", 2, 2, 0, ARG_ULONG|ARG_OFFSET,
 118                 (void *)offsetof(struct bdb_info, bi_idl_cache_max_size),
 119                 "( OLcfgDbAt:1.6 NAME 'olcDbIDLcacheSize' "
 120                 "DESC 'IDL cache size in IDLs' "
 121                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 122         { "index", "attr> <[pres,eq,approx,sub]", 2, 3, 0, ARG_MAGIC|BDB_INDEX,
 123                 bdb_cf_gen, "( OLcfgDbAt:0.2 NAME 'olcDbIndex' "
 124                 "DESC 'Attribute index parameters' "
 125                 "EQUALITY caseIgnoreMatch "
 126                 "SYNTAX OMsDirectoryString )", NULL, NULL },
 127         { "linearindex", NULL, 1, 2, 0, ARG_ON_OFF|ARG_OFFSET,
 128                 (void *)offsetof(struct bdb_info, bi_linear_index),
 129                 "( OLcfgDbAt:1.7 NAME 'olcDbLinearIndex' "
 130                 "DESC 'Index attributes one at a time' "
 131                 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
 132         { "lockdetect", "policy", 2, 2, 0, ARG_MAGIC|BDB_LOCKD,
 133                 bdb_cf_gen, "( OLcfgDbAt:1.8 NAME 'olcDbLockDetect' "
 134                 "DESC 'Deadlock detection algorithm' "
 135                 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
 136         { "mode", "mode", 2, 2, 0, ARG_MAGIC|BDB_MODE,
 137                 bdb_cf_gen, "( OLcfgDbAt:0.3 NAME 'olcDbMode' "
 138                 "DESC 'Unix permissions of database files' "
 139                 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
 140         { "searchstack", "depth", 2, 2, 0, ARG_INT|ARG_MAGIC|BDB_SSTACK,
 141                 bdb_cf_gen, "( OLcfgDbAt:1.9 NAME 'olcDbSearchStack' "
 142                 "DESC 'Depth of search stack in IDLs' "
 143                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 144         { "shm_key", "key", 2, 2, 0, ARG_LONG|ARG_OFFSET,
 145                 (void *)offsetof(struct bdb_info, bi_shm_key),
 146                 "( OLcfgDbAt:1.10 NAME 'olcDbShmKey' "
 147                 "DESC 'Key for shared memory region' "
 148                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 149         { NULL, NULL, 0, 0, 0, ARG_IGNORED,
 150                 NULL, NULL, NULL, NULL }
 151 };
 152
 153 static ConfigOCs bdbocs[] = {
 154         {
 155 #ifdef BDB_HIER
 156                 "( OLcfgDbOc:1.2 "
 157                 "NAME 'olcHdbConfig' "
 158                 "DESC 'HDB backend configuration' "
 159 #else
 160                 "( OLcfgDbOc:1.1 "
 161                 "NAME 'olcBdbConfig' "
 162                 "DESC 'BDB backend configuration' "
 163 #endif
 164                 "SUP olcDatabaseConfig "
 165                 "MUST olcDbDirectory "
 166                 "MAY ( olcDbCacheSize $ olcDbCheckpoint $ olcDbConfig $ "
 167                 "olcDbCryptFile $ olcDbCryptKey $ "
 168                 "olcDbNoSync $ olcDbDirtyRead $ olcDbIDLcacheSize $ "
 169                 "olcDbIndex $ olcDbLinearIndex $ olcDbLockDetect $ "
 170                 "olcDbMode $ olcDbSearchStack $ olcDbShmKey $ "
 171                 "olcDbCacheFree $ olcDbDNcacheSize $ olcDbPageSize ) )",
 172                         Cft_Database, bdbcfg },
 173         { NULL, 0, NULL }
 174 };
 175
 176 static slap_verbmasks bdb_lockd[] = {
 177         { BER_BVC("default"), DB_LOCK_DEFAULT },
 178         { BER_BVC("oldest"), DB_LOCK_OLDEST },
 179         { BER_BVC("random"), DB_LOCK_RANDOM },
 180         { BER_BVC("youngest"), DB_LOCK_YOUNGEST },
 181         { BER_BVC("fewest"), DB_LOCK_MINLOCKS },
 182         { BER_BVNULL, 0 }
 183 };
 184
 185 /* perform periodic checkpoints */
 186 static void *
 187 bdb_checkpoint( void *ctx, void *arg )
 188 {
 189         struct re_s *rtask = arg;
 190         struct bdb_info *bdb = rtask->arg;
 191
 192         TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte,
 193                 bdb->bi_txn_cp_min, 0 );
 194         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 195         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 196         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 197         return NULL;
 198 }
 199
 200 /* reindex entries on the fly */
 201 static void *
 202 bdb_online_index( void *ctx, void *arg )
 203 {
 204         struct re_s *rtask = arg;
 205         BackendDB *be = rtask->arg;
 206         struct bdb_info *bdb = be->be_private;
 207
 208         Connection conn = {0};
 209         OperationBuffer opbuf;
 210         Operation *op;
 211
 212         DBC *curs;
 213         DBT key, data;
 214         DB_TXN *txn;
 215         DB_LOCK lock;
 216         ID id, nid;
 217         EntryInfo *ei;
 218         int rc, getnext = 1;
 219         int i;
 220
 221         connection_fake_init( &conn, &opbuf, ctx );
 222         op = &opbuf.ob_op;
 223
 224         op->o_bd = be;
 225
 226         DBTzero( &key );
 227         DBTzero( &data );
 228
 229         id = 1;
 230         key.data = &nid;
 231         key.size = key.ulen = sizeof(ID);
 232         key.flags = DB_DBT_USERMEM;
 233
 234         data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
 235         data.dlen = data.ulen = 0;
 236
 237         while ( 1 ) {
 238                 if ( slapd_shutdown )
 239                         break;
 240
 241                 rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &txn, bdb->bi_db_opflags );
 242                 if ( rc )
 243                         break;
 244                 Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_online_index) ": txn id: %x\n",
 245                         txn->id(txn), 0, 0 );
 246                 if ( getnext ) {
 247                         getnext = 0;
 248                         BDB_ID2DISK( id, &nid );
 249                         rc = bdb->bi_id2entry->bdi_db->cursor(
 250                                 bdb->bi_id2entry->bdi_db, txn, &curs, bdb->bi_db_opflags );
 251                         if ( rc ) {
 252                                 TXN_ABORT( txn );
 253                                 break;
 254                         }
 255                         rc = curs->c_get( curs, &key, &data, DB_SET_RANGE );
 256                         curs->c_close( curs );
 257                         if ( rc ) {
 258                                 TXN_ABORT( txn );
 259                                 if ( rc == DB_NOTFOUND )
 260                                         rc = 0;
 261                                 if ( rc == DB_LOCK_DEADLOCK ) {
 262                                         ldap_pvt_thread_yield();
 263                                         continue;
 264                                 }
 265                                 break;
 266                         }
 267                         BDB_DISK2ID( &nid, &id );
 268                 }
 269
 270                 ei = NULL;
 271                 rc = bdb_cache_find_id( op, txn, id, &ei, 0, &lock );
 272                 if ( rc ) {
 273                         TXN_ABORT( txn );
 274                         if ( rc == DB_LOCK_DEADLOCK ) {
 275                                 ldap_pvt_thread_yield();
 276                                 continue;
 277                         }
 278                         if ( rc == DB_NOTFOUND ) {
 279                                 id++;
 280                                 getnext = 1;
 281                                 continue;
 282                         }
 283                         break;
 284                 }
 285                 if ( ei->bei_e ) {
 286                         rc = bdb_index_entry( op, txn, BDB_INDEX_UPDATE_OP, ei->bei_e );
 287                         if ( rc ) {
 288                                 TXN_ABORT( txn );
 289                                 if ( rc == DB_LOCK_DEADLOCK ) {
 290                                         ldap_pvt_thread_yield();
 291                                         continue;
 292                                 }
 293                                 break;
 294                         }
 295                         rc = TXN_COMMIT( txn, 0 );
 296                         txn = NULL;
 297                 }
 298                 id++;
 299                 getnext = 1;
 300         }
 301
 302         for ( i = 0; i < bdb->bi_nattrs; i++ ) {
 303                 if ( bdb->bi_attrs[ i ]->ai_indexmask & BDB_INDEX_DELETING
 304                         || bdb->bi_attrs[ i ]->ai_newmask == 0 )
 305                 {
 306                         continue;
 307                 }
 308                 bdb->bi_attrs[ i ]->ai_indexmask = bdb->bi_attrs[ i ]->ai_newmask;
 309                 bdb->bi_attrs[ i ]->ai_newmask = 0;
 310         }
 311
 312         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 313         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 314         bdb->bi_index_task = NULL;
 315         ldap_pvt_runqueue_remove( &slapd_rq, rtask );
 316         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 317
 318         return NULL;
 319 }
 320
 321 /* Cleanup loose ends after Modify completes */
 322 static int
 323 bdb_cf_cleanup( ConfigArgs *c )
 324 {
 325         struct bdb_info *bdb = c->be->be_private;
 326         int rc = 0;
 327
 328         if ( bdb->bi_flags & BDB_DEL_INDEX ) {
 329                 bdb_attr_flush( bdb );
 330                 bdb->bi_flags ^= BDB_DEL_INDEX;
 331         }
 332
 333         if ( bdb->bi_flags & BDB_RE_OPEN ) {
 334                 bdb->bi_flags ^= BDB_RE_OPEN;
 335                 rc = c->be->bd_info->bi_db_close( c->be, &c->reply );
 336                 if ( rc == 0 ) {
 337                         if ( bdb->bi_flags & BDB_UPD_CONFIG ) {
 338                                 if ( bdb->bi_db_config ) {
 339                                         int i;
 340                                         FILE *f = fopen( bdb->bi_db_config_path, "w" );
 341                                         if ( f ) {
 342                                                 for (i=0; bdb->bi_db_config[i].bv_val; i++)
 343                                                         fprintf( f, "%s\n", bdb->bi_db_config[i].bv_val );
 344                                                 fclose( f );
 345                                         }
 346                                 } else {
 347                                         unlink( bdb->bi_db_config_path );
 348                                 }
 349                                 bdb->bi_flags ^= BDB_UPD_CONFIG;
 350                         }
 351                         rc = c->be->bd_info->bi_db_open( c->be, &c->reply );
 352                 }
 353                 /* If this fails, we need to restart */
 354                 if ( rc ) {
 355                         slapd_shutdown = 2;
 356                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
 357                                 "failed to reopen database, rc=%d", rc );
 358                         Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(bdb_cf_cleanup)
 359                                 ": %s\n", c->cr_msg, 0, 0 );
 360                         rc = LDAP_OTHER;
 361                 }
 362         }
 363         return rc;
 364 }
 365
 366 static int
 367 bdb_cf_gen( ConfigArgs *c )
 368 {
 369         struct bdb_info *bdb = c->be->be_private;
 370         int rc;
 371
 372         if ( c->op == SLAP_CONFIG_EMIT ) {
 373                 rc = 0;
 374                 switch( c->type ) {
 375                 case BDB_MODE: {
 376                         char buf[64];
 377                         struct berval bv;
 378                         bv.bv_len = snprintf( buf, sizeof(buf), "0%o", bdb->bi_dbenv_mode );
 379                         if ( bv.bv_len > 0 && bv.bv_len < sizeof(buf) ) {
 380                                 bv.bv_val = buf;
 381                                 value_add_one( &c->rvalue_vals, &bv );
 382                         } else {
 383                                 rc = 1;
 384                         }
 385                         } break;
 386
 387                 case BDB_CHKPT:
 388                         if ( bdb->bi_txn_cp ) {
 389                                 char buf[64];
 390                                 struct berval bv;
 391                                 bv.bv_len = snprintf( buf, sizeof(buf), "%ld %ld",
 392                                         (long) bdb->bi_txn_cp_kbyte, (long) bdb->bi_txn_cp_min );
 393                                 if ( bv.bv_len > 0 && bv.bv_len < sizeof(buf) ) {
 394                                         bv.bv_val = buf;
 395                                         value_add_one( &c->rvalue_vals, &bv );
 396                                 } else {
 397                                         rc = 1;
 398                                 }
 399                         } else {
 400                                 rc = 1;
 401                         }
 402                         break;
 403
 404                 case BDB_CRYPTFILE:
 405                         if ( bdb->bi_db_crypt_file ) {
 406                                 c->value_string = ch_strdup( bdb->bi_db_crypt_file );
 407                         } else {
 408                                 rc = 1;
 409                         }
 410                         break;
 411
 412                 /* If a crypt file has been set, its contents are copied here.
 413                  * But we don't want the key to be incorporated here.
 414                  */
 415                 case BDB_CRYPTKEY:
 416                         if ( !bdb->bi_db_crypt_file && !BER_BVISNULL( &bdb->bi_db_crypt_key )) {
 417                                 value_add_one( &c->rvalue_vals, &bdb->bi_db_crypt_key );
 418                         } else {
 419                                 rc = 1;
 420                         }
 421                         break;
 422
 423                 case BDB_DIRECTORY:
 424                         if ( bdb->bi_dbenv_home ) {
 425                                 c->value_string = ch_strdup( bdb->bi_dbenv_home );
 426                         } else {
 427                                 rc = 1;
 428                         }
 429                         break;
 430
 431                 case BDB_CONFIG:
 432                         if ( !( bdb->bi_flags & BDB_IS_OPEN )
 433                                 && !bdb->bi_db_config )
 434                         {
 435                                 char    buf[SLAP_TEXT_BUFLEN];
 436                                 FILE *f = fopen( bdb->bi_db_config_path, "r" );
 437                                 struct berval bv;
 438
 439                                 if ( f ) {
 440                                         bdb->bi_flags |= BDB_HAS_CONFIG;
 441                                         while ( fgets( buf, sizeof(buf), f )) {
 442                                                 ber_str2bv( buf, 0, 1, &bv );
 443                                                 if ( bv.bv_len > 0 && bv.bv_val[bv.bv_len-1] == '\n' ) {
 444                                                         bv.bv_len--;
 445                                                         bv.bv_val[bv.bv_len] = '\0';
 446                                                 }
 447                                                 /* shouldn't need this, but ... */
 448                                                 if ( bv.bv_len > 0 && bv.bv_val[bv.bv_len-1] == '\r' ) {
 449                                                         bv.bv_len--;
 450                                                         bv.bv_val[bv.bv_len] = '\0';
 451                                                 }
 452                                                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 453                                         }
 454                                         fclose( f );
 455                                 }
 456                         }
 457                         if ( bdb->bi_db_config ) {
 458                                 int i;
 459                                 struct berval bv;
 460
 461                                 bv.bv_val = c->log;
 462                                 for (i=0; !BER_BVISNULL(&bdb->bi_db_config[i]); i++) {
 463                                         bv.bv_len = sprintf( bv.bv_val, "{%d}%s", i,
 464                                                 bdb->bi_db_config[i].bv_val );
 465                                         value_add_one( &c->rvalue_vals, &bv );
 466                                 }
 467                         }
 468                         if ( !c->rvalue_vals ) rc = 1;
 469                         break;
 470
 471                 case BDB_NOSYNC:
 472                         if ( bdb->bi_dbenv_xflags & DB_TXN_NOSYNC )
 473                                 c->value_int = 1;
 474                         break;
 475
 476                 case BDB_CHECKSUM:
 477                         if ( bdb->bi_flags & BDB_CHKSUM )
 478                                 c->value_int = 1;
 479                         break;
 480
 481                 case BDB_INDEX:
 482                         bdb_attr_index_unparse( bdb, &c->rvalue_vals );
 483                         if ( !c->rvalue_vals ) rc = 1;
 484                         break;
 485
 486                 case BDB_LOCKD:
 487                         rc = 1;
 488                         if ( bdb->bi_lock_detect != DB_LOCK_DEFAULT ) {
 489                                 int i;
 490                                 for (i=0; !BER_BVISNULL(&bdb_lockd[i].word); i++) {
 491                                         if ( bdb->bi_lock_detect == (u_int32_t)bdb_lockd[i].mask ) {
 492                                                 value_add_one( &c->rvalue_vals, &bdb_lockd[i].word );
 493                                                 rc = 0;
 494                                                 break;
 495                                         }
 496                                 }
 497                         }
 498                         break;
 499
 500                 case BDB_SSTACK:
 501                         c->value_int = bdb->bi_search_stack_depth;
 502                         break;
 503
 504                 case BDB_PGSIZE: {
 505                                 struct bdb_db_pgsize *ps;
 506                                 char buf[SLAP_TEXT_BUFLEN];
 507                                 struct berval bv;
 508                                 int rc = 1;
 509
 510                                 bv.bv_val = buf;
 511                                 for ( ps = bdb->bi_pagesizes; ps; ps = ps->bdp_next ) {
 512                                         bv.bv_len = sprintf( buf, "%s %d", ps->bdp_name.bv_val,
 513                                                 ps->bdp_size / 1024 );
 514                                         value_add_one( &c->rvalue_vals, &bv );
 515                                         rc = 0;
 516
 517                                 }
 518                                 break;
 519                         }
 520                 }
 521                 return rc;
 522         } else if ( c->op == LDAP_MOD_DELETE ) {
 523                 rc = 0;
 524                 switch( c->type ) {
 525                 case BDB_MODE:
 526 #if 0
 527                         /* FIXME: does it make any sense to change the mode,
 528                          * if we don't exec a chmod()? */
 529                         bdb->bi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
 530                         break;
 531 #endif
 532
 533                 /* single-valued no-ops */
 534                 case BDB_LOCKD:
 535                 case BDB_SSTACK:
 536                         break;
 537
 538                 case BDB_CHKPT:
 539                         if ( bdb->bi_txn_cp_task ) {
 540                                 struct re_s *re = bdb->bi_txn_cp_task;
 541                                 bdb->bi_txn_cp_task = NULL;
 542                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 543                                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
 544                                         ldap_pvt_runqueue_stoptask( &slapd_rq, re );
 545                                 ldap_pvt_runqueue_remove( &slapd_rq, re );
 546                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 547                         }
 548                         bdb->bi_txn_cp = 0;
 549                         break;
 550                 case BDB_CONFIG:
 551                         if ( c->valx < 0 ) {
 552                                 ber_bvarray_free( bdb->bi_db_config );
 553                                 bdb->bi_db_config = NULL;
 554                         } else {
 555                                 int i = c->valx;
 556                                 ch_free( bdb->bi_db_config[i].bv_val );
 557                                 for (; bdb->bi_db_config[i].bv_val; i++)
 558                                         bdb->bi_db_config[i] = bdb->bi_db_config[i+1];
 559                         }
 560                         bdb->bi_flags |= BDB_UPD_CONFIG|BDB_RE_OPEN;
 561                         c->cleanup = bdb_cf_cleanup;
 562                         break;
 563                 /* Doesn't really make sense to change these on the fly;
 564                  * the entire DB must be dumped and reloaded
 565                  */
 566                 case BDB_CRYPTFILE:
 567                         if ( bdb->bi_db_crypt_file ) {
 568                                 ch_free( bdb->bi_db_crypt_file );
 569                                 bdb->bi_db_crypt_file = NULL;
 570                         }
 571                         /* FALLTHRU */
 572                 case BDB_CRYPTKEY:
 573                         if ( !BER_BVISNULL( &bdb->bi_db_crypt_key )) {
 574                                 ch_free( bdb->bi_db_crypt_key.bv_val );
 575                                 BER_BVZERO( &bdb->bi_db_crypt_key );
 576                         }
 577                         break;
 578                 case BDB_DIRECTORY:
 579                         bdb->bi_flags |= BDB_RE_OPEN;
 580                         bdb->bi_flags ^= BDB_HAS_CONFIG;
 581                         ch_free( bdb->bi_dbenv_home );
 582                         bdb->bi_dbenv_home = NULL;
 583                         ch_free( bdb->bi_db_config_path );
 584                         bdb->bi_db_config_path = NULL;
 585                         c->cleanup = bdb_cf_cleanup;
 586                         ldap_pvt_thread_pool_purgekey( bdb->bi_dbenv );
 587                         break;
 588                 case BDB_NOSYNC:
 589                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC, 0 );
 590                         break;
 591                 case BDB_CHECKSUM:
 592                         bdb->bi_flags &= ~BDB_CHKSUM;
 593                         break;
 594                 case BDB_INDEX:
 595                         if ( c->valx == -1 ) {
 596                                 int i;
 597
 598                                 /* delete all (FIXME) */
 599                                 for ( i = 0; i < bdb->bi_nattrs; i++ ) {
 600                                         bdb->bi_attrs[i]->ai_indexmask |= BDB_INDEX_DELETING;
 601                                 }
 602                                 bdb->bi_flags |= BDB_DEL_INDEX;
 603                                 c->cleanup = bdb_cf_cleanup;
 604
 605                         } else {
 606                                 struct berval bv, def = BER_BVC("default");
 607                                 char *ptr;
 608
 609                                 for (ptr = c->line; !isspace( (unsigned char) *ptr ); ptr++);
 610
 611                                 bv.bv_val = c->line;
 612                                 bv.bv_len = ptr - bv.bv_val;
 613                                 if ( bvmatch( &bv, &def )) {
 614                                         bdb->bi_defaultmask = 0;
 615
 616                                 } else {
 617                                         int i;
 618                                         char **attrs;
 619                                         char sep;
 620
 621                                         sep = bv.bv_val[ bv.bv_len ];
 622                                         bv.bv_val[ bv.bv_len ] = '\0';
 623                                         attrs = ldap_str2charray( bv.bv_val, "," );
 624
 625                                         for ( i = 0; attrs[ i ]; i++ ) {
 626                                                 AttributeDescription *ad = NULL;
 627                                                 const char *text;
 628                                                 AttrInfo *ai;
 629
 630                                                 slap_str2ad( attrs[ i ], &ad, &text );
 631                                                 /* if we got here... */
 632                                                 assert( ad != NULL );
 633
 634                                                 ai = bdb_attr_mask( bdb, ad );
 635                                                 /* if we got here... */
 636                                                 assert( ai != NULL );
 637
 638                                                 ai->ai_indexmask |= BDB_INDEX_DELETING;
 639                                                 bdb->bi_flags |= BDB_DEL_INDEX;
 640                                                 c->cleanup = bdb_cf_cleanup;
 641                                         }
 642
 643                                         bv.bv_val[ bv.bv_len ] = sep;
 644                                         ldap_charray_free( attrs );
 645                                 }
 646                         }
 647                         break;
 648                 /* doesn't make sense on the fly; the DB file must be
 649                  * recreated
 650                  */
 651                 case BDB_PGSIZE: {
 652                                 struct bdb_db_pgsize *ps, **prev;
 653                                 int i;
 654
 655                                 for ( i = 0, prev = &bdb->bi_pagesizes, ps = *prev; ps;
 656                                         prev = &ps->bdp_next, ps = ps->bdp_next, i++ ) {
 657                                         if ( c->valx == -1 || i == c->valx ) {
 658                                                 *prev = ps->bdp_next;
 659                                                 ch_free( ps );
 660                                                 ps = *prev;
 661                                                 if ( i == c->valx ) break;
 662                                         }
 663                                 }
 664                         }
 665                         break;
 666                 }
 667                 return rc;
 668         }
 669
 670         switch( c->type ) {
 671         case BDB_MODE:
 672                 if ( ASCII_DIGIT( c->argv[1][0] ) ) {
 673                         long mode;
 674                         char *next;
 675                         errno = 0;
 676                         mode = strtol( c->argv[1], &next, 0 );
 677                         if ( errno != 0 || next == c->argv[1] || next[0] != '\0' ) {
 678                                 fprintf( stderr, "%s: "
 679                                         "unable to parse mode=\"%s\".\n",
 680                                         c->log, c->argv[1] );
 681                                 return 1;
 682                         }
 683                         bdb->bi_dbenv_mode = mode;
 684
 685                 } else {
 686                         char *m = c->argv[1];
 687                         int who, what, mode = 0;
 688
 689                         if ( strlen( m ) != STRLENOF("-rwxrwxrwx") ) {
 690                                 return 1;
 691                         }
 692
 693                         if ( m[0] != '-' ) {
 694                                 return 1;
 695                         }
 696
 697                         m++;
 698                         for ( who = 0; who < 3; who++ ) {
 699                                 for ( what = 0; what < 3; what++, m++ ) {
 700                                         if ( m[0] == '-' ) {
 701                                                 continue;
 702                                         } else if ( m[0] != "rwx"[what] ) {
 703                                                 return 1;
 704                                         }
 705                                         mode += ((1 << (2 - what)) << 3*(2 - who));
 706                                 }
 707                         }
 708                         bdb->bi_dbenv_mode = mode;
 709                 }
 710                 break;
 711         case BDB_CHKPT: {
 712                 long    l;
 713                 bdb->bi_txn_cp = 1;
 714                 if ( lutil_atolx( &l, c->argv[1], 0 ) != 0 ) {
 715                         fprintf( stderr, "%s: "
 716                                 "invalid kbyte \"%s\" in \"checkpoint\".\n",
 717                                 c->log, c->argv[1] );
 718                         return 1;
 719                 }
 720                 bdb->bi_txn_cp_kbyte = l;
 721                 if ( lutil_atolx( &l, c->argv[2], 0 ) != 0 ) {
 722                         fprintf( stderr, "%s: "
 723                                 "invalid minutes \"%s\" in \"checkpoint\".\n",
 724                                 c->log, c->argv[2] );
 725                         return 1;
 726                 }
 727                 bdb->bi_txn_cp_min = l;
 728                 /* If we're in server mode and time-based checkpointing is enabled,
 729                  * submit a task to perform periodic checkpoints.
 730                  */
 731                 if ((slapMode & SLAP_SERVER_MODE) && bdb->bi_txn_cp_min ) {
 732                         struct re_s *re = bdb->bi_txn_cp_task;
 733                         if ( re ) {
 734                                 re->interval.tv_sec = bdb->bi_txn_cp_min * 60;
 735                         } else {
 736                                 if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 737                                         fprintf( stderr, "%s: "
 738                                                 "\"checkpoint\" must occur after \"suffix\".\n",
 739                                                 c->log );
 740                                         return 1;
 741                                 }
 742                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 743                                 bdb->bi_txn_cp_task = ldap_pvt_runqueue_insert( &slapd_rq,
 744                                         bdb->bi_txn_cp_min * 60, bdb_checkpoint, bdb,
 745                                         LDAP_XSTRING(bdb_checkpoint), c->be->be_suffix[0].bv_val );
 746                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 747                         }
 748                 }
 749                 } break;
 750
 751         case BDB_CONFIG: {
 752                 char *ptr = c->line;
 753                 struct berval bv;
 754
 755                 if ( c->op == SLAP_CONFIG_ADD ) {
 756                         ptr += STRLENOF("dbconfig");
 757                         while (!isspace((unsigned char)*ptr)) ptr++;
 758                         while (isspace((unsigned char)*ptr)) ptr++;
 759                 }
 760
 761                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 762                         bdb->bi_flags |= BDB_UPD_CONFIG|BDB_RE_OPEN;
 763                         c->cleanup = bdb_cf_cleanup;
 764                 } else {
 765                 /* If we're just starting up...
 766                  */
 767                         FILE *f;
 768                         /* If a DB_CONFIG file exists, or we don't know the path
 769                          * to the DB_CONFIG file, ignore these directives
 770                          */
 771                         if (( bdb->bi_flags & BDB_HAS_CONFIG ) || !bdb->bi_db_config_path )
 772                                 break;
 773                         f = fopen( bdb->bi_db_config_path, "a" );
 774                         if ( f ) {
 775                                 /* FIXME: EBCDIC probably needs special handling */
 776                                 fprintf( f, "%s\n", ptr );
 777                                 fclose( f );
 778                         }
 779                 }
 780                 ber_str2bv( ptr, 0, 1, &bv );
 781                 ber_bvarray_add( &bdb->bi_db_config, &bv );
 782                 }
 783                 break;
 784
 785         case BDB_CRYPTFILE:
 786                 rc = lutil_get_filed_password( c->value_string, &bdb->bi_db_crypt_key );
 787                 if ( rc == 0 ) {
 788                         bdb->bi_db_crypt_file = c->value_string;
 789                 }
 790                 break;
 791
 792         /* Cannot set key if file was already set */
 793         case BDB_CRYPTKEY:
 794                 if ( bdb->bi_db_crypt_file ) {
 795                         rc = 1;
 796                 } else {
 797                         bdb->bi_db_crypt_key = c->value_bv;
 798                 }
 799                 break;
 800
 801         case BDB_DIRECTORY: {
 802                 FILE *f;
 803                 char *ptr, *testpath;
 804                 int len;
 805
 806                 len = strlen( c->value_string );
 807                 testpath = ch_malloc( len + STRLENOF(LDAP_DIRSEP) + STRLENOF("DUMMY") + 1 );
 808                 ptr = lutil_strcopy( testpath, c->value_string );
 809                 *ptr++ = LDAP_DIRSEP[0];
 810                 strcpy( ptr, "DUMMY" );
 811                 f = fopen( testpath, "w" );
 812                 if ( f ) {
 813                         fclose( f );
 814                         unlink( testpath );
 815                 }
 816                 ch_free( testpath );
 817                 if ( !f ) {
 818                         snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s: invalid path: %s",
 819                                 c->log, strerror( errno ));
 820                         Debug( LDAP_DEBUG_ANY, "%s\n", c->cr_msg, 0, 0 );
 821                         return -1;
 822                 }
 823
 824                 if ( bdb->bi_dbenv_home )
 825                         ch_free( bdb->bi_dbenv_home );
 826                 bdb->bi_dbenv_home = c->value_string;
 827
 828                 /* See if a DB_CONFIG file already exists here */
 829                 if ( bdb->bi_db_config_path )
 830                         ch_free( bdb->bi_db_config_path );
 831                 bdb->bi_db_config_path = ch_malloc( len +
 832                         STRLENOF(LDAP_DIRSEP) + STRLENOF("DB_CONFIG") + 1 );
 833                 ptr = lutil_strcopy( bdb->bi_db_config_path, bdb->bi_dbenv_home );
 834                 *ptr++ = LDAP_DIRSEP[0];
 835                 strcpy( ptr, "DB_CONFIG" );
 836
 837                 f = fopen( bdb->bi_db_config_path, "r" );
 838                 if ( f ) {
 839                         bdb->bi_flags |= BDB_HAS_CONFIG;
 840                         fclose(f);
 841                 }
 842                 }
 843                 break;
 844
 845         case BDB_NOSYNC:
 846                 if ( c->value_int )
 847                         bdb->bi_dbenv_xflags |= DB_TXN_NOSYNC;
 848                 else
 849                         bdb->bi_dbenv_xflags &= ~DB_TXN_NOSYNC;
 850                 if ( bdb->bi_flags & BDB_IS_OPEN ) {
 851                         bdb->bi_dbenv->set_flags( bdb->bi_dbenv, DB_TXN_NOSYNC,
 852                                 c->value_int );
 853                 }
 854                 break;
 855
 856         case BDB_CHECKSUM:
 857                 if ( c->value_int )
 858                         bdb->bi_flags |= BDB_CHKSUM;
 859                 else
 860                         bdb->bi_flags &= ~BDB_CHKSUM;
 861                 break;
 862
 863         case BDB_INDEX:
 864                 rc = bdb_attr_index_config( bdb, c->fname, c->lineno,
 865                         c->argc - 1, &c->argv[1], &c->reply);
 866
 867                 if( rc != LDAP_SUCCESS ) return 1;
 868                 if (( bdb->bi_flags & BDB_IS_OPEN ) && !bdb->bi_index_task ) {
 869                         /* Start the task as soon as we finish here. Set a long
 870                          * interval (10 hours) so that it only gets scheduled once.
 871                          */
 872                         if ( c->be->be_suffix == NULL || BER_BVISNULL( &c->be->be_suffix[0] ) ) {
 873                                 fprintf( stderr, "%s: "
 874                                         "\"index\" must occur after \"suffix\".\n",
 875                                         c->log );
 876                                 return 1;
 877                         }
 878                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 879                         bdb->bi_index_task = ldap_pvt_runqueue_insert( &slapd_rq, 36000,
 880                                 bdb_online_index, c->be,
 881                                 LDAP_XSTRING(bdb_online_index), c->be->be_suffix[0].bv_val );
 882                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 883                 }
 884                 break;
 885
 886         case BDB_LOCKD:
 887                 rc = verb_to_mask( c->argv[1], bdb_lockd );
 888                 if ( BER_BVISNULL(&bdb_lockd[rc].word) ) {
 889                         fprintf( stderr, "%s: "
 890                                 "bad policy (%s) in \"lockDetect <policy>\" line\n",
 891                                 c->log, c->argv[1] );
 892                         return 1;
 893                 }
 894                 bdb->bi_lock_detect = (u_int32_t)rc;
 895                 break;
 896
 897         case BDB_SSTACK:
 898                 if ( c->value_int < MINIMUM_SEARCH_STACK_DEPTH ) {
 899                         fprintf( stderr,
 900                 "%s: depth %d too small, using %d\n",
 901                         c->log, c->value_int, MINIMUM_SEARCH_STACK_DEPTH );
 902                         c->value_int = MINIMUM_SEARCH_STACK_DEPTH;
 903                 }
 904                 bdb->bi_search_stack_depth = c->value_int;
 905                 break;
 906
 907         case BDB_PGSIZE: {
 908                 struct bdb_db_pgsize *ps, **prev;
 909                 int i, s;
 910
 911                 s = atoi(c->argv[2]);
 912                 if ( s < 1 || s > 64 ) {
 913                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
 914                                 "%s: size must be > 0 and <= 64: %d",
 915                                 c->log, s );
 916                         Debug( LDAP_DEBUG_ANY, "%s\n", c->cr_msg, 0, 0 );
 917                         return -1;
 918                 }
 919                 i = strlen(c->argv[1]);
 920                 ps = ch_malloc( sizeof(struct bdb_db_pgsize) + i + 1 );
 921                 ps->bdp_next = NULL;
 922                 ps->bdp_name.bv_len = i;
 923                 ps->bdp_name.bv_val = (char *)(ps+1);
 924                 strcpy( ps->bdp_name.bv_val, c->argv[1] );
 925                 ps->bdp_size = s * 1024;
 926                 for ( prev = &bdb->bi_pagesizes; *prev; prev = &(*prev)->bdp_next )
 927                         ;
 928                 *prev = ps;
 929                 }
 930                 break;
 931         }
 932         return 0;
 933 }
 934
 935 int bdb_back_init_cf( BackendInfo *bi )
 936 {
 937         int rc;
 938         bi->bi_cf_ocs = bdbocs;
 939
 940         rc = config_register_schema( bdbcfg, bdbocs );
 941         if ( rc ) return rc;
 942         return 0;
 943 }