git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/delete.c

   1 /* delete.c - bdb backend delete routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2014 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21
  22 #include "lutil.h"
  23 #include "back-bdb.h"
  24
  25 int
  26 bdb_delete( Operation *op, SlapReply *rs )
  27 {
  28         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  29         Entry   *matched = NULL;
  30         struct berval   pdn = {0, NULL};
  31         Entry   *e = NULL;
  32         Entry   *p = NULL;
  33         EntryInfo       *ei = NULL, *eip = NULL;
  34         int             manageDSAit = get_manageDSAit( op );
  35         AttributeDescription *children = slap_schema.si_ad_children;
  36         AttributeDescription *entry = slap_schema.si_ad_entry;
  37         DB_TXN          *ltid = NULL, *lt2;
  38         struct bdb_op_info opinfo = {{{ 0 }}};
  39         ID      eid;
  40
  41         DB_LOCK         lock, plock;
  42
  43         int             num_retries = 0;
  44
  45         int     rc;
  46
  47         LDAPControl **preread_ctrl = NULL;
  48         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  49         int num_ctrls = 0;
  50
  51         int     parent_is_glue = 0;
  52         int parent_is_leaf = 0;
  53
  54         Debug( LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_delete) ": %s\n",
  55                 op->o_req_dn.bv_val, 0, 0 );
  56
  57 #ifdef LDAP_X_TXN
  58         if( op->o_txnSpec && txn_preop( op, rs ))
  59                 return rs->sr_err;
  60 #endif
  61
  62         ctrls[num_ctrls] = 0;
  63
  64         /* allocate CSN */
  65         if ( BER_BVISNULL( &op->o_csn ) ) {
  66                 struct berval csn;
  67                 char csnbuf[LDAP_PVT_CSNSTR_BUFSIZE];
  68
  69                 csn.bv_val = csnbuf;
  70                 csn.bv_len = sizeof(csnbuf);
  71                 slap_get_csn( op, &csn, 1 );
  72         }
  73
  74         if( 0 ) {
  75 retry:  /* transaction retry */
  76                 if( e != NULL ) {
  77                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
  78                         e = NULL;
  79                 }
  80                 if( p != NULL ) {
  81                         bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
  82                         p = NULL;
  83                 }
  84                 Debug( LDAP_DEBUG_TRACE,
  85                         "==> " LDAP_XSTRING(bdb_delete) ": retrying...\n",
  86                         0, 0, 0 );
  87                 rs->sr_err = TXN_ABORT( ltid );
  88                 ltid = NULL;
  89                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
  90                 opinfo.boi_oe.oe_key = NULL;
  91                 op->o_do_not_cache = opinfo.boi_acl_cache;
  92                 if( rs->sr_err != 0 ) {
  93                         rs->sr_err = LDAP_OTHER;
  94                         rs->sr_text = "internal error";
  95                         goto return_results;
  96                 }
  97                 if ( op->o_abandon ) {
  98                         rs->sr_err = SLAPD_ABANDON;
  99                         goto return_results;
 100                 }
 101                 parent_is_glue = 0;
 102                 parent_is_leaf = 0;
 103                 bdb_trans_backoff( ++num_retries );
 104         }
 105
 106         /* begin transaction */
 107         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 108                 bdb->bi_db_opflags );
 109         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_delete) ": txn1 id: %x\n",
 110                 ltid->id(ltid), 0, 0 );
 111         rs->sr_text = NULL;
 112         if( rs->sr_err != 0 ) {
 113                 Debug( LDAP_DEBUG_TRACE,
 114                         LDAP_XSTRING(bdb_delete) ": txn_begin failed: "
 115                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 116                 rs->sr_err = LDAP_OTHER;
 117                 rs->sr_text = "internal error";
 118                 goto return_results;
 119         }
 120
 121         opinfo.boi_oe.oe_key = bdb;
 122         opinfo.boi_txn = ltid;
 123         opinfo.boi_err = 0;
 124         opinfo.boi_acl_cache = op->o_do_not_cache;
 125         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 126
 127         if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 128                 dnParent( &op->o_req_ndn, &pdn );
 129         }
 130
 131         /* get entry */
 132         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 133                 &lock );
 134
 135         switch( rs->sr_err ) {
 136         case 0:
 137         case DB_NOTFOUND:
 138                 break;
 139         case DB_LOCK_DEADLOCK:
 140         case DB_LOCK_NOTGRANTED:
 141                 goto retry;
 142         case LDAP_BUSY:
 143                 rs->sr_text = "ldap server busy";
 144                 goto return_results;
 145         default:
 146                 rs->sr_err = LDAP_OTHER;
 147                 rs->sr_text = "internal error";
 148                 goto return_results;
 149         }
 150
 151         if ( rs->sr_err == 0 ) {
 152                 e = ei->bei_e;
 153                 eip = ei->bei_parent;
 154         } else {
 155                 matched = ei->bei_e;
 156         }
 157
 158         /* FIXME : dn2entry() should return non-glue entry */
 159         if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
 160                 Debug( LDAP_DEBUG_ARGS,
 161                         "<=- " LDAP_XSTRING(bdb_delete) ": no such object %s\n",
 162                         op->o_req_dn.bv_val, 0, 0);
 163
 164                 if ( matched != NULL ) {
 165                         rs->sr_matched = ch_strdup( matched->e_dn );
 166                         rs->sr_ref = is_entry_referral( matched )
 167                                 ? get_entry_referrals( op, matched )
 168                                 : NULL;
 169                         bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, matched);
 170                         matched = NULL;
 171
 172                 } else {
 173                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 174                                         &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 175                 }
 176
 177                 rs->sr_err = LDAP_REFERRAL;
 178                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 179                 goto return_results;
 180         }
 181
 182         rc = bdb_cache_find_id( op, ltid, eip->bei_id, &eip, 0, &plock );
 183         switch( rc ) {
 184         case DB_LOCK_DEADLOCK:
 185         case DB_LOCK_NOTGRANTED:
 186                 goto retry;
 187         case 0:
 188         case DB_NOTFOUND:
 189                 break;
 190         default:
 191                 rs->sr_err = LDAP_OTHER;
 192                 rs->sr_text = "internal error";
 193                 goto return_results;
 194         }
 195         if ( eip ) p = eip->bei_e;
 196
 197         if ( pdn.bv_len != 0 ) {
 198                 if( p == NULL || !bvmatch( &pdn, &p->e_nname )) {
 199                         Debug( LDAP_DEBUG_TRACE,
 200                                 "<=- " LDAP_XSTRING(bdb_delete) ": parent "
 201                                 "does not exist\n", 0, 0, 0 );
 202                         rs->sr_err = LDAP_OTHER;
 203                         rs->sr_text = "could not locate parent of entry";
 204                         goto return_results;
 205                 }
 206
 207                 /* check parent for "children" acl */
 208                 rs->sr_err = access_allowed( op, p,
 209                         children, NULL, ACL_WDEL, NULL );
 210
 211                 if ( !rs->sr_err  ) {
 212                         switch( opinfo.boi_err ) {
 213                         case DB_LOCK_DEADLOCK:
 214                         case DB_LOCK_NOTGRANTED:
 215                                 goto retry;
 216                         }
 217
 218                         Debug( LDAP_DEBUG_TRACE,
 219                                 "<=- " LDAP_XSTRING(bdb_delete) ": no write "
 220                                 "access to parent\n", 0, 0, 0 );
 221                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 222                         rs->sr_text = "no write access to parent";
 223                         goto return_results;
 224                 }
 225
 226         } else {
 227                 /* no parent, must be root to delete */
 228                 if( ! be_isroot( op ) ) {
 229                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
 230                                 || be_shadow_update( op ) ) {
 231                                 p = (Entry *)&slap_entry_root;
 232
 233                                 /* check parent for "children" acl */
 234                                 rs->sr_err = access_allowed( op, p,
 235                                         children, NULL, ACL_WDEL, NULL );
 236
 237                                 p = NULL;
 238
 239                                 if ( !rs->sr_err  ) {
 240                                         switch( opinfo.boi_err ) {
 241                                         case DB_LOCK_DEADLOCK:
 242                                         case DB_LOCK_NOTGRANTED:
 243                                                 goto retry;
 244                                         }
 245
 246                                         Debug( LDAP_DEBUG_TRACE,
 247                                                 "<=- " LDAP_XSTRING(bdb_delete)
 248                                                 ": no access to parent\n",
 249                                                 0, 0, 0 );
 250                                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 251                                         rs->sr_text = "no write access to parent";
 252                                         goto return_results;
 253                                 }
 254
 255                         } else {
 256                                 Debug( LDAP_DEBUG_TRACE,
 257                                         "<=- " LDAP_XSTRING(bdb_delete)
 258                                         ": no parent and not root\n", 0, 0, 0 );
 259                                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 260                                 goto return_results;
 261                         }
 262                 }
 263         }
 264
 265         if ( get_assert( op ) &&
 266                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 267         {
 268                 rs->sr_err = LDAP_ASSERTION_FAILED;
 269                 goto return_results;
 270         }
 271
 272         rs->sr_err = access_allowed( op, e,
 273                 entry, NULL, ACL_WDEL, NULL );
 274
 275         if ( !rs->sr_err  ) {
 276                 switch( opinfo.boi_err ) {
 277                 case DB_LOCK_DEADLOCK:
 278                 case DB_LOCK_NOTGRANTED:
 279                         goto retry;
 280                 }
 281
 282                 Debug( LDAP_DEBUG_TRACE,
 283                         "<=- " LDAP_XSTRING(bdb_delete) ": no write access "
 284                         "to entry\n", 0, 0, 0 );
 285                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 286                 rs->sr_text = "no write access to entry";
 287                 goto return_results;
 288         }
 289
 290         if ( !manageDSAit && is_entry_referral( e ) ) {
 291                 /* entry is a referral, don't allow delete */
 292                 rs->sr_ref = get_entry_referrals( op, e );
 293
 294                 Debug( LDAP_DEBUG_TRACE,
 295                         LDAP_XSTRING(bdb_delete) ": entry is referral\n",
 296                         0, 0, 0 );
 297
 298                 rs->sr_err = LDAP_REFERRAL;
 299                 rs->sr_matched = ch_strdup( e->e_name.bv_val );
 300                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 301                 goto return_results;
 302         }
 303
 304         /* pre-read */
 305         if( op->o_preread ) {
 306                 if( preread_ctrl == NULL ) {
 307                         preread_ctrl = &ctrls[num_ctrls++];
 308                         ctrls[num_ctrls] = NULL;
 309                 }
 310                 if( slap_read_controls( op, rs, e,
 311                         &slap_pre_read_bv, preread_ctrl ) )
 312                 {
 313                         Debug( LDAP_DEBUG_TRACE,
 314                                 "<=- " LDAP_XSTRING(bdb_delete) ": pre-read "
 315                                 "failed!\n", 0, 0, 0 );
 316                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 317                                 /* FIXME: is it correct to abort
 318                                  * operation if control fails? */
 319                                 goto return_results;
 320                         }
 321                 }
 322         }
 323
 324         /* nested transaction */
 325         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 326                 bdb->bi_db_opflags );
 327         rs->sr_text = NULL;
 328         if( rs->sr_err != 0 ) {
 329                 Debug( LDAP_DEBUG_TRACE,
 330                         LDAP_XSTRING(bdb_delete) ": txn_begin(2) failed: "
 331                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 332                 rs->sr_err = LDAP_OTHER;
 333                 rs->sr_text = "internal error";
 334                 goto return_results;
 335         }
 336         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_delete) ": txn2 id: %x\n",
 337                 lt2->id(lt2), 0, 0 );
 338
 339         BDB_LOG_PRINTF( bdb->bi_dbenv, lt2, "slapd Starting delete %s(%d)",
 340                 e->e_nname.bv_val, e->e_id );
 341
 342         /* Can't do it if we have kids */
 343         rs->sr_err = bdb_cache_children( op, lt2, e );
 344         if( rs->sr_err != DB_NOTFOUND ) {
 345                 switch( rs->sr_err ) {
 346                 case DB_LOCK_DEADLOCK:
 347                 case DB_LOCK_NOTGRANTED:
 348                         goto retry;
 349                 case 0:
 350                         Debug(LDAP_DEBUG_ARGS,
 351                                 "<=- " LDAP_XSTRING(bdb_delete)
 352                                 ": non-leaf %s\n",
 353                                 op->o_req_dn.bv_val, 0, 0);
 354                         rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
 355                         rs->sr_text = "subordinate objects must be deleted first";
 356                         break;
 357                 default:
 358                         Debug(LDAP_DEBUG_ARGS,
 359                                 "<=- " LDAP_XSTRING(bdb_delete)
 360                                 ": has_children failed: %s (%d)\n",
 361                                 db_strerror(rs->sr_err), rs->sr_err, 0 );
 362                         rs->sr_err = LDAP_OTHER;
 363                         rs->sr_text = "internal error";
 364                 }
 365                 goto return_results;
 366         }
 367
 368         /* delete from dn2id */
 369         rs->sr_err = bdb_dn2id_delete( op, lt2, eip, e );
 370         if ( rs->sr_err != 0 ) {
 371                 Debug(LDAP_DEBUG_TRACE,
 372                         "<=- " LDAP_XSTRING(bdb_delete) ": dn2id failed: "
 373                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 374                 switch( rs->sr_err ) {
 375                 case DB_LOCK_DEADLOCK:
 376                 case DB_LOCK_NOTGRANTED:
 377                         goto retry;
 378                 }
 379                 rs->sr_text = "DN index delete failed";
 380                 rs->sr_err = LDAP_OTHER;
 381                 goto return_results;
 382         }
 383
 384         /* delete indices for old attributes */
 385         rs->sr_err = bdb_index_entry_del( op, lt2, e );
 386         if ( rs->sr_err != LDAP_SUCCESS ) {
 387                 Debug(LDAP_DEBUG_TRACE,
 388                         "<=- " LDAP_XSTRING(bdb_delete) ": index failed: "
 389                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 390                 switch( rs->sr_err ) {
 391                 case DB_LOCK_DEADLOCK:
 392                 case DB_LOCK_NOTGRANTED:
 393                         goto retry;
 394                 }
 395                 rs->sr_text = "entry index delete failed";
 396                 rs->sr_err = LDAP_OTHER;
 397                 goto return_results;
 398         }
 399
 400         /* fixup delete CSN */
 401         if ( !SLAP_SHADOW( op->o_bd )) {
 402                 struct berval vals[2];
 403
 404                 assert( !BER_BVISNULL( &op->o_csn ) );
 405                 vals[0] = op->o_csn;
 406                 BER_BVZERO( &vals[1] );
 407                 rs->sr_err = bdb_index_values( op, lt2, slap_schema.si_ad_entryCSN,
 408                         vals, 0, SLAP_INDEX_ADD_OP );
 409         if ( rs->sr_err != LDAP_SUCCESS ) {
 410                         switch( rs->sr_err ) {
 411                         case DB_LOCK_DEADLOCK:
 412                         case DB_LOCK_NOTGRANTED:
 413                                 goto retry;
 414                         }
 415                         rs->sr_text = "entryCSN index update failed";
 416                         rs->sr_err = LDAP_OTHER;
 417                         goto return_results;
 418                 }
 419         }
 420
 421         /* delete from id2entry */
 422         rs->sr_err = bdb_id2entry_delete( op->o_bd, lt2, e );
 423         if ( rs->sr_err != 0 ) {
 424                 Debug( LDAP_DEBUG_TRACE,
 425                         "<=- " LDAP_XSTRING(bdb_delete) ": id2entry failed: "
 426                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 427                 switch( rs->sr_err ) {
 428                 case DB_LOCK_DEADLOCK:
 429                 case DB_LOCK_NOTGRANTED:
 430                         goto retry;
 431                 }
 432                 rs->sr_text = "entry delete failed";
 433                 rs->sr_err = LDAP_OTHER;
 434                 goto return_results;
 435         }
 436
 437         if ( pdn.bv_len != 0 ) {
 438                 parent_is_glue = is_entry_glue(p);
 439                 rs->sr_err = bdb_cache_children( op, lt2, p );
 440                 if ( rs->sr_err != DB_NOTFOUND ) {
 441                         switch( rs->sr_err ) {
 442                         case DB_LOCK_DEADLOCK:
 443                         case DB_LOCK_NOTGRANTED:
 444                                 goto retry;
 445                         case 0:
 446                                 break;
 447                         default:
 448                                 Debug(LDAP_DEBUG_ARGS,
 449                                         "<=- " LDAP_XSTRING(bdb_delete)
 450                                         ": has_children failed: %s (%d)\n",
 451                                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 452                                 rs->sr_err = LDAP_OTHER;
 453                                 rs->sr_text = "internal error";
 454                                 goto return_results;
 455                         }
 456                         parent_is_leaf = 1;
 457                 }
 458                 bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
 459                 p = NULL;
 460         }
 461
 462         BDB_LOG_PRINTF( bdb->bi_dbenv, lt2, "slapd Commit1 delete %s(%d)",
 463                 e->e_nname.bv_val, e->e_id );
 464
 465         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 466                 rs->sr_err = LDAP_OTHER;
 467                 rs->sr_text = "txn_commit(2) failed";
 468                 goto return_results;
 469         }
 470
 471         eid = e->e_id;
 472
 473 #if 0   /* Do we want to reclaim deleted IDs? */
 474         ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex );
 475         if ( e->e_id == bdb->bi_lastid ) {
 476                 bdb_last_id( op->o_bd, ltid );
 477         }
 478         ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
 479 #endif
 480
 481         if( op->o_noop ) {
 482                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 483                         rs->sr_text = "txn_abort (no-op) failed";
 484                 } else {
 485                         rs->sr_err = LDAP_X_NO_OPERATION;
 486                         ltid = NULL;
 487                         goto return_results;
 488                 }
 489         } else {
 490
 491                 BDB_LOG_PRINTF( bdb->bi_dbenv, ltid, "slapd Cache delete %s(%d)",
 492                         e->e_nname.bv_val, e->e_id );
 493
 494                 rc = bdb_cache_delete( bdb, e, ltid, &lock );
 495                 switch( rc ) {
 496                 case DB_LOCK_DEADLOCK:
 497                 case DB_LOCK_NOTGRANTED:
 498                         goto retry;
 499                 }
 500
 501                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 502         }
 503         ltid = NULL;
 504         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 505         opinfo.boi_oe.oe_key = NULL;
 506
 507         BDB_LOG_PRINTF( bdb->bi_dbenv, NULL, "slapd Committed delete %s(%d)",
 508                 e->e_nname.bv_val, e->e_id );
 509
 510         if( rs->sr_err != 0 ) {
 511                 Debug( LDAP_DEBUG_TRACE,
 512                         LDAP_XSTRING(bdb_delete) ": txn_%s failed: %s (%d)\n",
 513                         op->o_noop ? "abort (no-op)" : "commit",
 514                         db_strerror(rs->sr_err), rs->sr_err );
 515                 rs->sr_err = LDAP_OTHER;
 516                 rs->sr_text = "commit failed";
 517
 518                 goto return_results;
 519         }
 520
 521         Debug( LDAP_DEBUG_TRACE,
 522                 LDAP_XSTRING(bdb_delete) ": deleted%s id=%08lx dn=\"%s\"\n",
 523                 op->o_noop ? " (no-op)" : "",
 524                 eid, op->o_req_dn.bv_val );
 525         rs->sr_err = LDAP_SUCCESS;
 526         rs->sr_text = NULL;
 527         if( num_ctrls ) rs->sr_ctrls = ctrls;
 528
 529 return_results:
 530         if ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) {
 531                 op->o_delete_glue_parent = 1;
 532         }
 533
 534         if ( p )
 535                 bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
 536
 537         /* free entry */
 538         if( e != NULL ) {
 539                 if ( rs->sr_err == LDAP_SUCCESS ) {
 540                         /* Free the EntryInfo and the Entry */
 541                         bdb_cache_entryinfo_lock( BEI(e) );
 542                         bdb_cache_delete_cleanup( &bdb->bi_cache, BEI(e) );
 543                 } else {
 544                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 545                 }
 546         }
 547
 548         if( ltid != NULL ) {
 549                 TXN_ABORT( ltid );
 550         }
 551         if ( opinfo.boi_oe.oe_key ) {
 552                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 553         }
 554
 555         send_ldap_result( op, rs );
 556         slap_graduate_commit_csn( op );
 557
 558         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 559                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 560                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 561         }
 562
 563         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
 564                 TXN_CHECKPOINT( bdb->bi_dbenv,
 565                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 566         }
 567         return rs->sr_err;
 568 }