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

   1 /* modify.c - bdb backend modify routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2011 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21 #include <ac/time.h>
  22
  23 #include "back-bdb.h"
  24
  25 static struct berval scbva[] = {
  26         BER_BVC("glue"),
  27         BER_BVNULL
  28 };
  29
  30 static void
  31 bdb_modify_idxflags(
  32         Operation *op,
  33         AttributeDescription *desc,
  34         int got_delete,
  35         Attribute *newattrs,
  36         Attribute *oldattrs )
  37 {
  38         struct berval   ix_at;
  39         AttrInfo        *ai;
  40
  41         /* check if modified attribute was indexed
  42          * but not in case of NOOP... */
  43         ai = bdb_index_mask( op->o_bd, desc, &ix_at );
  44         if ( ai ) {
  45                 if ( got_delete ) {
  46                         Attribute       *ap;
  47                         struct berval   ix2;
  48
  49                         ap = attr_find( oldattrs, desc );
  50                         if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL;
  51
  52                         /* Find all other attrs that index to same slot */
  53                         for ( ap = newattrs; ap; ap = ap->a_next ) {
  54                                 ai = bdb_index_mask( op->o_bd, ap->a_desc, &ix2 );
  55                                 if ( ai && ix2.bv_val == ix_at.bv_val )
  56                                         ap->a_flags |= SLAP_ATTR_IXADD;
  57                         }
  58
  59                 } else {
  60                         Attribute       *ap;
  61
  62                         ap = attr_find( newattrs, desc );
  63                         if ( ap ) ap->a_flags |= SLAP_ATTR_IXADD;
  64                 }
  65         }
  66 }
  67
  68 int bdb_modify_internal(
  69         Operation *op,
  70         DB_TXN *tid,
  71         Modifications *modlist,
  72         Entry *e,
  73         const char **text,
  74         char *textbuf,
  75         size_t textlen )
  76 {
  77         int rc, err;
  78         Modification    *mod;
  79         Modifications   *ml;
  80         Attribute       *save_attrs;
  81         Attribute       *ap;
  82         int                     glue_attr_delete = 0;
  83         int                     got_delete;
  84
  85         Debug( LDAP_DEBUG_TRACE, "bdb_modify_internal: 0x%08lx: %s\n",
  86                 e->e_id, e->e_dn, 0);
  87
  88         if ( !acl_check_modlist( op, e, modlist )) {
  89                 return LDAP_INSUFFICIENT_ACCESS;
  90         }
  91
  92         /* save_attrs will be disposed of by bdb_cache_modify */
  93         save_attrs = e->e_attrs;
  94         e->e_attrs = attrs_dup( e->e_attrs );
  95
  96         for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
  97                 int match;
  98                 mod = &ml->sml_mod;
  99                 switch( mod->sm_op ) {
 100                 case LDAP_MOD_ADD:
 101                 case LDAP_MOD_REPLACE:
 102                         if ( mod->sm_desc == slap_schema.si_ad_structuralObjectClass ) {
 103                                 value_match( &match, slap_schema.si_ad_structuralObjectClass,
 104                                         slap_schema.si_ad_structuralObjectClass->
 105                                                 ad_type->sat_equality,
 106                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 107                                         &mod->sm_values[0], &scbva[0], text );
 108                                 if ( !match ) glue_attr_delete = 1;
 109                         }
 110                 }
 111                 if ( glue_attr_delete )
 112                         break;
 113         }
 114
 115         if ( glue_attr_delete ) {
 116                 Attribute       **app = &e->e_attrs;
 117                 while ( *app != NULL ) {
 118                         if ( !is_at_operational( (*app)->a_desc->ad_type )) {
 119                                 Attribute *save = *app;
 120                                 *app = (*app)->a_next;
 121                                 attr_free( save );
 122                                 continue;
 123                         }
 124                         app = &(*app)->a_next;
 125                 }
 126         }
 127
 128         for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
 129                 mod = &ml->sml_mod;
 130                 got_delete = 0;
 131
 132                 switch ( mod->sm_op ) {
 133                 case LDAP_MOD_ADD:
 134                         Debug(LDAP_DEBUG_ARGS,
 135                                 "bdb_modify_internal: add %s\n",
 136                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 137                         err = modify_add_values( e, mod, get_permissiveModify(op),
 138                                 text, textbuf, textlen );
 139                         if( err != LDAP_SUCCESS ) {
 140                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 141                                         err, *text, 0);
 142                         }
 143                         break;
 144
 145                 case LDAP_MOD_DELETE:
 146                         if ( glue_attr_delete ) {
 147                                 err = LDAP_SUCCESS;
 148                                 break;
 149                         }
 150
 151                         Debug(LDAP_DEBUG_ARGS,
 152                                 "bdb_modify_internal: delete %s\n",
 153                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 154                         err = modify_delete_values( e, mod, get_permissiveModify(op),
 155                                 text, textbuf, textlen );
 156                         assert( err != LDAP_TYPE_OR_VALUE_EXISTS );
 157                         if( err != LDAP_SUCCESS ) {
 158                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 159                                         err, *text, 0);
 160                         } else {
 161                                 got_delete = 1;
 162                         }
 163                         break;
 164
 165                 case LDAP_MOD_REPLACE:
 166                         Debug(LDAP_DEBUG_ARGS,
 167                                 "bdb_modify_internal: replace %s\n",
 168                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 169                         err = modify_replace_values( e, mod, get_permissiveModify(op),
 170                                 text, textbuf, textlen );
 171                         if( err != LDAP_SUCCESS ) {
 172                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 173                                         err, *text, 0);
 174                         } else {
 175                                 got_delete = 1;
 176                         }
 177                         break;
 178
 179                 case LDAP_MOD_INCREMENT:
 180                         Debug(LDAP_DEBUG_ARGS,
 181                                 "bdb_modify_internal: increment %s\n",
 182                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 183                         err = modify_increment_values( e, mod, get_permissiveModify(op),
 184                                 text, textbuf, textlen );
 185                         if( err != LDAP_SUCCESS ) {
 186                                 Debug(LDAP_DEBUG_ARGS,
 187                                         "bdb_modify_internal: %d %s\n",
 188                                         err, *text, 0);
 189                         } else {
 190                                 got_delete = 1;
 191                         }
 192                         break;
 193
 194                 case SLAP_MOD_SOFTADD:
 195                         Debug(LDAP_DEBUG_ARGS,
 196                                 "bdb_modify_internal: softadd %s\n",
 197                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 198                         /* Avoid problems in index_add_mods()
 199                          * We need to add index if necessary.
 200                          */
 201                         mod->sm_op = LDAP_MOD_ADD;
 202
 203                         err = modify_add_values( e, mod, get_permissiveModify(op),
 204                                 text, textbuf, textlen );
 205
 206                         mod->sm_op = SLAP_MOD_SOFTADD;
 207
 208                         if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) {
 209                                 err = LDAP_SUCCESS;
 210                         }
 211
 212                         if( err != LDAP_SUCCESS ) {
 213                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 214                                         err, *text, 0);
 215                         }
 216                         break;
 217
 218                 case SLAP_MOD_SOFTDEL:
 219                         Debug(LDAP_DEBUG_ARGS,
 220                                 "bdb_modify_internal: softdel %s\n",
 221                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 222                         /* Avoid problems in index_delete_mods()
 223                          * We need to add index if necessary.
 224                          */
 225                         mod->sm_op = LDAP_MOD_DELETE;
 226
 227                         err = modify_delete_values( e, mod, get_permissiveModify(op),
 228                                 text, textbuf, textlen );
 229
 230                         mod->sm_op = SLAP_MOD_SOFTDEL;
 231
 232                         if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) {
 233                                 err = LDAP_SUCCESS;
 234                         }
 235
 236                         if( err != LDAP_SUCCESS ) {
 237                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 238                                         err, *text, 0);
 239                         }
 240                         break;
 241
 242                 case SLAP_MOD_ADD_IF_NOT_PRESENT:
 243                         if ( attr_find( e->e_attrs, mod->sm_desc ) != NULL ) {
 244                                 /* skip */
 245                                 err = LDAP_SUCCESS;
 246                                 break;
 247                         }
 248
 249                         Debug(LDAP_DEBUG_ARGS,
 250                                 "bdb_modify_internal: add_if_not_present %s\n",
 251                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 252                         /* Avoid problems in index_add_mods()
 253                          * We need to add index if necessary.
 254                          */
 255                         mod->sm_op = LDAP_MOD_ADD;
 256
 257                         err = modify_add_values( e, mod, get_permissiveModify(op),
 258                                 text, textbuf, textlen );
 259
 260                         mod->sm_op = SLAP_MOD_ADD_IF_NOT_PRESENT;
 261
 262                         if( err != LDAP_SUCCESS ) {
 263                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 264                                         err, *text, 0);
 265                         }
 266                         break;
 267
 268                 default:
 269                         Debug(LDAP_DEBUG_ANY, "bdb_modify_internal: invalid op %d\n",
 270                                 mod->sm_op, 0, 0);
 271                         *text = "Invalid modify operation";
 272                         err = LDAP_OTHER;
 273                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 274                                 err, *text, 0);
 275                 }
 276
 277                 if ( err != LDAP_SUCCESS ) {
 278                         attrs_free( e->e_attrs );
 279                         e->e_attrs = save_attrs;
 280                         /* unlock entry, delete from cache */
 281                         return err;
 282                 }
 283
 284                 /* If objectClass was modified, reset the flags */
 285                 if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
 286                         e->e_ocflags = 0;
 287                 }
 288
 289                 if ( glue_attr_delete ) e->e_ocflags = 0;
 290
 291
 292                 /* check if modified attribute was indexed
 293                  * but not in case of NOOP... */
 294                 if ( !op->o_noop ) {
 295                         bdb_modify_idxflags( op, mod->sm_desc, got_delete, e->e_attrs, save_attrs );
 296                 }
 297         }
 298
 299         /* check that the entry still obeys the schema */
 300         ap = NULL;
 301         rc = entry_schema_check( op, e, save_attrs, get_relax(op), 0, &ap,
 302                 text, textbuf, textlen );
 303         if ( rc != LDAP_SUCCESS || op->o_noop ) {
 304                 attrs_free( e->e_attrs );
 305                 /* clear the indexing flags */
 306                 for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 307                         ap->a_flags &= ~(SLAP_ATTR_IXADD|SLAP_ATTR_IXDEL);
 308                 }
 309                 e->e_attrs = save_attrs;
 310
 311                 if ( rc != LDAP_SUCCESS ) {
 312                         Debug( LDAP_DEBUG_ANY,
 313                                 "entry failed schema check: %s\n",
 314                                 *text, 0, 0 );
 315                 }
 316
 317                 /* if NOOP then silently revert to saved attrs */
 318                 return rc;
 319         }
 320
 321         /* structuralObjectClass modified! */
 322         if ( ap ) {
 323                 assert( ap->a_desc == slap_schema.si_ad_structuralObjectClass );
 324                 if ( !op->o_noop ) {
 325                         bdb_modify_idxflags( op, slap_schema.si_ad_structuralObjectClass,
 326                                 1, e->e_attrs, save_attrs );
 327                 }
 328         }
 329
 330         /* update the indices of the modified attributes */
 331
 332         /* start with deleting the old index entries */
 333         for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 334                 if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
 335                         struct berval *vals;
 336                         Attribute *a2;
 337                         ap->a_flags &= ~SLAP_ATTR_IXDEL;
 338                         a2 = attr_find( e->e_attrs, ap->a_desc );
 339                         if ( a2 ) {
 340                                 /* need to detect which values were deleted */
 341                                 int i, j;
 342                                 vals = op->o_tmpalloc( (ap->a_numvals + 1) *
 343                                         sizeof(struct berval), op->o_tmpmemctx );
 344                                 j = 0;
 345                                 for ( i=0; i < ap->a_numvals; i++ ) {
 346                                         rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 347                                                 &ap->a_nvals[i], NULL, op->o_tmpmemctx );
 348                                         /* Save deleted values */
 349                                         if ( rc == LDAP_NO_SUCH_ATTRIBUTE )
 350                                                 vals[j++] = ap->a_nvals[i];
 351                                 }
 352                                 BER_BVZERO(vals+j);
 353                         } else {
 354                                 /* attribute was completely deleted */
 355                                 vals = ap->a_nvals;
 356                         }
 357                         rc = 0;
 358                         if ( !BER_BVISNULL( vals )) {
 359                                 rc = bdb_index_values( op, tid, ap->a_desc,
 360                                         vals, e->e_id, SLAP_INDEX_DELETE_OP );
 361                                 if ( rc != LDAP_SUCCESS ) {
 362                                         Debug( LDAP_DEBUG_ANY,
 363                                                 "%s: attribute \"%s\" index delete failure\n",
 364                                                 op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 365                                         attrs_free( e->e_attrs );
 366                                         e->e_attrs = save_attrs;
 367                                 }
 368                         }
 369                         if ( vals != ap->a_nvals )
 370                                 op->o_tmpfree( vals, op->o_tmpmemctx );
 371                         if ( rc ) return rc;
 372                 }
 373         }
 374
 375         /* add the new index entries */
 376         for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
 377                 if (ap->a_flags & SLAP_ATTR_IXADD) {
 378                         ap->a_flags &= ~SLAP_ATTR_IXADD;
 379                         rc = bdb_index_values( op, tid, ap->a_desc,
 380                                 ap->a_nvals,
 381                                 e->e_id, SLAP_INDEX_ADD_OP );
 382                         if ( rc != LDAP_SUCCESS ) {
 383                                 Debug( LDAP_DEBUG_ANY,
 384                                        "%s: attribute \"%s\" index add failure\n",
 385                                         op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 386                                 attrs_free( e->e_attrs );
 387                                 e->e_attrs = save_attrs;
 388                                 return rc;
 389                         }
 390                 }
 391         }
 392
 393         return rc;
 394 }
 395
 396
 397 int
 398 bdb_modify( Operation *op, SlapReply *rs )
 399 {
 400         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 401         Entry           *e = NULL;
 402         EntryInfo       *ei = NULL;
 403         int             manageDSAit = get_manageDSAit( op );
 404         char textbuf[SLAP_TEXT_BUFLEN];
 405         size_t textlen = sizeof textbuf;
 406         DB_TXN  *ltid = NULL, *lt2;
 407         struct bdb_op_info opinfo = {{{ 0 }}};
 408         Entry           dummy = {0};
 409
 410         DB_LOCK         lock;
 411
 412         int             num_retries = 0;
 413
 414         LDAPControl **preread_ctrl = NULL;
 415         LDAPControl **postread_ctrl = NULL;
 416         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 417         int num_ctrls = 0;
 418
 419         int rc;
 420
 421 #ifdef LDAP_X_TXN
 422         int settle = 0;
 423 #endif
 424
 425         Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(bdb_modify) ": %s\n",
 426                 op->o_req_dn.bv_val, 0, 0 );
 427
 428 #ifdef LDAP_X_TXN
 429         if( op->o_txnSpec ) {
 430                 /* acquire connection lock */
 431                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 432                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
 433                         rs->sr_text = "invalid transaction identifier";
 434                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
 435                         goto txnReturn;
 436                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
 437                         settle=1;
 438                         goto txnReturn;
 439                 }
 440
 441                 if( op->o_conn->c_txn_backend == NULL ) {
 442                         op->o_conn->c_txn_backend = op->o_bd;
 443
 444                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
 445                         rs->sr_text = "transaction cannot span multiple database contexts";
 446                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
 447                         goto txnReturn;
 448                 }
 449
 450                 /* insert operation into transaction */
 451
 452                 rs->sr_text = "transaction specified";
 453                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
 454
 455 txnReturn:
 456                 /* release connection lock */
 457                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 458
 459                 if( !settle ) {
 460                         send_ldap_result( op, rs );
 461                         return rs->sr_err;
 462                 }
 463         }
 464 #endif
 465
 466         ctrls[num_ctrls] = NULL;
 467
 468         /* Don't touch the opattrs, if this is a contextCSN update
 469          * initiated from updatedn */
 470         if ( !be_isupdate(op) || !op->orm_modlist || op->orm_modlist->sml_next ||
 471                  op->orm_modlist->sml_desc != slap_schema.si_ad_contextCSN ) {
 472
 473                 slap_mods_opattrs( op, &op->orm_modlist, 1 );
 474         }
 475
 476         if( 0 ) {
 477 retry:  /* transaction retry */
 478                 if ( dummy.e_attrs ) {
 479                         attrs_free( dummy.e_attrs );
 480                         dummy.e_attrs = NULL;
 481                 }
 482                 if( e != NULL ) {
 483                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 484                         e = NULL;
 485                 }
 486                 Debug(LDAP_DEBUG_TRACE,
 487                         LDAP_XSTRING(bdb_modify) ": retrying...\n", 0, 0, 0);
 488
 489                 rs->sr_err = TXN_ABORT( ltid );
 490                 ltid = NULL;
 491                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 492                 opinfo.boi_oe.oe_key = NULL;
 493                 op->o_do_not_cache = opinfo.boi_acl_cache;
 494                 if( rs->sr_err != 0 ) {
 495                         rs->sr_err = LDAP_OTHER;
 496                         rs->sr_text = "internal error";
 497                         goto return_results;
 498                 }
 499                 if ( op->o_abandon ) {
 500                         rs->sr_err = SLAPD_ABANDON;
 501                         goto return_results;
 502                 }
 503                 bdb_trans_backoff( ++num_retries );
 504         }
 505
 506         /* begin transaction */
 507         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 508                 bdb->bi_db_opflags );
 509         rs->sr_text = NULL;
 510         if( rs->sr_err != 0 ) {
 511                 Debug( LDAP_DEBUG_TRACE,
 512                         LDAP_XSTRING(bdb_modify) ": txn_begin failed: "
 513                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 514                 rs->sr_err = LDAP_OTHER;
 515                 rs->sr_text = "internal error";
 516                 goto return_results;
 517         }
 518
 519         opinfo.boi_oe.oe_key = bdb;
 520         opinfo.boi_txn = ltid;
 521         opinfo.boi_err = 0;
 522         opinfo.boi_acl_cache = op->o_do_not_cache;
 523         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 524
 525         /* get entry or ancestor */
 526         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 527                 &lock );
 528
 529         if ( rs->sr_err != 0 ) {
 530                 Debug( LDAP_DEBUG_TRACE,
 531                         LDAP_XSTRING(bdb_modify) ": dn2entry failed (%d)\n",
 532                         rs->sr_err, 0, 0 );
 533                 switch( rs->sr_err ) {
 534                 case DB_LOCK_DEADLOCK:
 535                 case DB_LOCK_NOTGRANTED:
 536                         goto retry;
 537                 case DB_NOTFOUND:
 538                         break;
 539                 case LDAP_BUSY:
 540                         rs->sr_text = "ldap server busy";
 541                         goto return_results;
 542                 default:
 543                         rs->sr_err = LDAP_OTHER;
 544                         rs->sr_text = "internal error";
 545                         goto return_results;
 546                 }
 547         }
 548
 549         e = ei->bei_e;
 550
 551         /* acquire and lock entry */
 552         /* FIXME: dn2entry() should return non-glue entry */
 553         if (( rs->sr_err == DB_NOTFOUND ) ||
 554                 ( !manageDSAit && e && is_entry_glue( e )))
 555         {
 556                 if ( e != NULL ) {
 557                         rs->sr_matched = ch_strdup( e->e_dn );
 558                         rs->sr_ref = is_entry_referral( e )
 559                                 ? get_entry_referrals( op, e )
 560                                 : NULL;
 561                         bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
 562                         e = NULL;
 563
 564                 } else {
 565                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 566                                 &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 567                 }
 568
 569                 rs->sr_err = LDAP_REFERRAL;
 570                 send_ldap_result( op, rs );
 571
 572                 if ( rs->sr_ref != default_referral ) {
 573                         ber_bvarray_free( rs->sr_ref );
 574                 }
 575                 free( (char *)rs->sr_matched );
 576                 rs->sr_ref = NULL;
 577                 rs->sr_matched = NULL;
 578
 579                 goto done;
 580         }
 581
 582         if ( !manageDSAit && is_entry_referral( e ) ) {
 583                 /* entry is a referral, don't allow modify */
 584                 rs->sr_ref = get_entry_referrals( op, e );
 585
 586                 Debug( LDAP_DEBUG_TRACE,
 587                         LDAP_XSTRING(bdb_modify) ": entry is referral\n",
 588                         0, 0, 0 );
 589
 590                 rs->sr_err = LDAP_REFERRAL;
 591                 rs->sr_matched = e->e_name.bv_val;
 592                 send_ldap_result( op, rs );
 593
 594                 ber_bvarray_free( rs->sr_ref );
 595                 rs->sr_ref = NULL;
 596                 rs->sr_matched = NULL;
 597                 goto done;
 598         }
 599
 600         if ( get_assert( op ) &&
 601                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 602         {
 603                 rs->sr_err = LDAP_ASSERTION_FAILED;
 604                 goto return_results;
 605         }
 606
 607         if( op->o_preread ) {
 608                 if( preread_ctrl == NULL ) {
 609                         preread_ctrl = &ctrls[num_ctrls++];
 610                         ctrls[num_ctrls] = NULL;
 611                 }
 612                 if ( slap_read_controls( op, rs, e,
 613                         &slap_pre_read_bv, preread_ctrl ) )
 614                 {
 615                         Debug( LDAP_DEBUG_TRACE,
 616                                 "<=- " LDAP_XSTRING(bdb_modify) ": pre-read "
 617                                 "failed!\n", 0, 0, 0 );
 618                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 619                                 /* FIXME: is it correct to abort
 620                                  * operation if control fails? */
 621                                 goto return_results;
 622                         }
 623                 }
 624         }
 625
 626         /* nested transaction */
 627         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, bdb->bi_db_opflags );
 628         rs->sr_text = NULL;
 629         if( rs->sr_err != 0 ) {
 630                 Debug( LDAP_DEBUG_TRACE,
 631                         LDAP_XSTRING(bdb_modify) ": txn_begin(2) failed: " "%s (%d)\n",
 632                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 633                 rs->sr_err = LDAP_OTHER;
 634                 rs->sr_text = "internal error";
 635                 goto return_results;
 636         }
 637         /* Modify the entry */
 638         dummy = *e;
 639         rs->sr_err = bdb_modify_internal( op, lt2, op->orm_modlist,
 640                 &dummy, &rs->sr_text, textbuf, textlen );
 641
 642         if( rs->sr_err != LDAP_SUCCESS ) {
 643                 Debug( LDAP_DEBUG_TRACE,
 644                         LDAP_XSTRING(bdb_modify) ": modify failed (%d)\n",
 645                         rs->sr_err, 0, 0 );
 646                 if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
 647                         rs->sr_err = opinfo.boi_err;
 648                 }
 649                 /* Only free attrs if they were dup'd.  */
 650                 if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 651                 switch( rs->sr_err ) {
 652                 case DB_LOCK_DEADLOCK:
 653                 case DB_LOCK_NOTGRANTED:
 654                         goto retry;
 655                 }
 656                 goto return_results;
 657         }
 658
 659         /* change the entry itself */
 660         rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
 661         if ( rs->sr_err != 0 ) {
 662                 Debug( LDAP_DEBUG_TRACE,
 663                         LDAP_XSTRING(bdb_modify) ": id2entry update failed " "(%d)\n",
 664                         rs->sr_err, 0, 0 );
 665                 switch( rs->sr_err ) {
 666                 case DB_LOCK_DEADLOCK:
 667                 case DB_LOCK_NOTGRANTED:
 668                         goto retry;
 669                 }
 670                 rs->sr_text = "entry update failed";
 671                 goto return_results;
 672         }
 673
 674         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 675                 rs->sr_err = LDAP_OTHER;
 676                 rs->sr_text = "txn_commit(2) failed";
 677                 goto return_results;
 678         }
 679
 680         if( op->o_postread ) {
 681                 if( postread_ctrl == NULL ) {
 682                         postread_ctrl = &ctrls[num_ctrls++];
 683                         ctrls[num_ctrls] = NULL;
 684                 }
 685                 if( slap_read_controls( op, rs, &dummy,
 686                         &slap_post_read_bv, postread_ctrl ) )
 687                 {
 688                         Debug( LDAP_DEBUG_TRACE,
 689                                 "<=- " LDAP_XSTRING(bdb_modify)
 690                                 ": post-read failed!\n", 0, 0, 0 );
 691                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 692                                 /* FIXME: is it correct to abort
 693                                  * operation if control fails? */
 694                                 goto return_results;
 695                         }
 696                 }
 697         }
 698
 699         if( op->o_noop ) {
 700                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 701                         rs->sr_text = "txn_abort (no-op) failed";
 702                 } else {
 703                         rs->sr_err = LDAP_X_NO_OPERATION;
 704                         ltid = NULL;
 705                         /* Only free attrs if they were dup'd.  */
 706                         if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 707                         goto return_results;
 708                 }
 709         } else {
 710                 /* may have changed in bdb_modify_internal() */
 711                 e->e_ocflags = dummy.e_ocflags;
 712                 rc = bdb_cache_modify( bdb, e, dummy.e_attrs, ltid, &lock );
 713                 switch( rc ) {
 714                 case DB_LOCK_DEADLOCK:
 715                 case DB_LOCK_NOTGRANTED:
 716                         goto retry;
 717                 }
 718                 dummy.e_attrs = NULL;
 719
 720                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 721         }
 722         ltid = NULL;
 723         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 724         opinfo.boi_oe.oe_key = NULL;
 725
 726         if( rs->sr_err != 0 ) {
 727                 Debug( LDAP_DEBUG_TRACE,
 728                         LDAP_XSTRING(bdb_modify) ": txn_%s failed: %s (%d)\n",
 729                         op->o_noop ? "abort (no-op)" : "commit",
 730                         db_strerror(rs->sr_err), rs->sr_err );
 731                 rs->sr_err = LDAP_OTHER;
 732                 rs->sr_text = "commit failed";
 733
 734                 goto return_results;
 735         }
 736
 737         Debug( LDAP_DEBUG_TRACE,
 738                 LDAP_XSTRING(bdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
 739                 op->o_noop ? " (no-op)" : "",
 740                 dummy.e_id, op->o_req_dn.bv_val );
 741
 742         rs->sr_err = LDAP_SUCCESS;
 743         rs->sr_text = NULL;
 744         if( num_ctrls ) rs->sr_ctrls = ctrls;
 745
 746 return_results:
 747         if( dummy.e_attrs ) {
 748                 attrs_free( dummy.e_attrs );
 749         }
 750         send_ldap_result( op, rs );
 751
 752         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
 753                 TXN_CHECKPOINT( bdb->bi_dbenv,
 754                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 755         }
 756
 757 done:
 758         slap_graduate_commit_csn( op );
 759
 760         if( ltid != NULL ) {
 761                 TXN_ABORT( ltid );
 762         }
 763         if ( opinfo.boi_oe.oe_key ) {
 764                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 765         }
 766
 767         if( e != NULL ) {
 768                 bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
 769         }
 770
 771         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 772                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 773                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 774         }
 775         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 776                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 777                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 778         }
 779
 780         rs->sr_text = NULL;
 781
 782         return rs->sr_err;
 783 }