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 2000-2012 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/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                         if( err != LDAP_SUCCESS ) {
 157                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 158                                         err, *text, 0);
 159                         } else {
 160                                 got_delete = 1;
 161                         }
 162                         break;
 163
 164                 case LDAP_MOD_REPLACE:
 165                         Debug(LDAP_DEBUG_ARGS,
 166                                 "bdb_modify_internal: replace %s\n",
 167                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 168                         err = modify_replace_values( e, mod, get_permissiveModify(op),
 169                                 text, textbuf, textlen );
 170                         if( err != LDAP_SUCCESS ) {
 171                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 172                                         err, *text, 0);
 173                         } else {
 174                                 got_delete = 1;
 175                         }
 176                         break;
 177
 178                 case LDAP_MOD_INCREMENT:
 179                         Debug(LDAP_DEBUG_ARGS,
 180                                 "bdb_modify_internal: increment %s\n",
 181                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 182                         err = modify_increment_values( e, mod, get_permissiveModify(op),
 183                                 text, textbuf, textlen );
 184                         if( err != LDAP_SUCCESS ) {
 185                                 Debug(LDAP_DEBUG_ARGS,
 186                                         "bdb_modify_internal: %d %s\n",
 187                                         err, *text, 0);
 188                         } else {
 189                                 got_delete = 1;
 190                         }
 191                         break;
 192
 193                 case SLAP_MOD_SOFTADD:
 194                         Debug(LDAP_DEBUG_ARGS,
 195                                 "bdb_modify_internal: softadd %s\n",
 196                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 197                         /* Avoid problems in index_add_mods()
 198                          * We need to add index if necessary.
 199                          */
 200                         mod->sm_op = LDAP_MOD_ADD;
 201
 202                         err = modify_add_values( e, mod, get_permissiveModify(op),
 203                                 text, textbuf, textlen );
 204
 205                         mod->sm_op = SLAP_MOD_SOFTADD;
 206
 207                         if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) {
 208                                 err = LDAP_SUCCESS;
 209                         }
 210
 211                         if( err != LDAP_SUCCESS ) {
 212                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 213                                         err, *text, 0);
 214                         }
 215                         break;
 216
 217                 case SLAP_MOD_SOFTDEL:
 218                         Debug(LDAP_DEBUG_ARGS,
 219                                 "bdb_modify_internal: softdel %s\n",
 220                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 221                         /* Avoid problems in index_delete_mods()
 222                          * We need to add index if necessary.
 223                          */
 224                         mod->sm_op = LDAP_MOD_DELETE;
 225
 226                         err = modify_delete_values( e, mod, get_permissiveModify(op),
 227                                 text, textbuf, textlen );
 228
 229                         mod->sm_op = SLAP_MOD_SOFTDEL;
 230
 231                         if ( err == LDAP_NO_SUCH_ATTRIBUTE ) {
 232                                 err = LDAP_SUCCESS;
 233                         }
 234
 235                         if( err != LDAP_SUCCESS ) {
 236                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 237                                         err, *text, 0);
 238                         }
 239                         break;
 240
 241                 case SLAP_MOD_ADD_IF_NOT_PRESENT:
 242                         if ( attr_find( e->e_attrs, mod->sm_desc ) != NULL ) {
 243                                 /* skip */
 244                                 err = LDAP_SUCCESS;
 245                                 break;
 246                         }
 247
 248                         Debug(LDAP_DEBUG_ARGS,
 249                                 "bdb_modify_internal: add_if_not_present %s\n",
 250                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 251                         /* Avoid problems in index_add_mods()
 252                          * We need to add index if necessary.
 253                          */
 254                         mod->sm_op = LDAP_MOD_ADD;
 255
 256                         err = modify_add_values( e, mod, get_permissiveModify(op),
 257                                 text, textbuf, textlen );
 258
 259                         mod->sm_op = SLAP_MOD_ADD_IF_NOT_PRESENT;
 260
 261                         if( err != LDAP_SUCCESS ) {
 262                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 263                                         err, *text, 0);
 264                         }
 265                         break;
 266
 267                 default:
 268                         Debug(LDAP_DEBUG_ANY, "bdb_modify_internal: invalid op %d\n",
 269                                 mod->sm_op, 0, 0);
 270                         *text = "Invalid modify operation";
 271                         err = LDAP_OTHER;
 272                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 273                                 err, *text, 0);
 274                 }
 275
 276                 if ( err != LDAP_SUCCESS ) {
 277                         attrs_free( e->e_attrs );
 278                         e->e_attrs = save_attrs;
 279                         /* unlock entry, delete from cache */
 280                         return err;
 281                 }
 282
 283                 /* If objectClass was modified, reset the flags */
 284                 if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
 285                         e->e_ocflags = 0;
 286                 }
 287
 288                 if ( glue_attr_delete ) e->e_ocflags = 0;
 289
 290
 291                 /* check if modified attribute was indexed
 292                  * but not in case of NOOP... */
 293                 if ( !op->o_noop ) {
 294                         bdb_modify_idxflags( op, mod->sm_desc, got_delete, e->e_attrs, save_attrs );
 295                 }
 296         }
 297
 298         /* check that the entry still obeys the schema */
 299         ap = NULL;
 300         rc = entry_schema_check( op, e, save_attrs, get_relax(op), 0, &ap,
 301                 text, textbuf, textlen );
 302         if ( rc != LDAP_SUCCESS || op->o_noop ) {
 303                 attrs_free( e->e_attrs );
 304                 /* clear the indexing flags */
 305                 for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 306                         ap->a_flags &= ~(SLAP_ATTR_IXADD|SLAP_ATTR_IXDEL);
 307                 }
 308                 e->e_attrs = save_attrs;
 309
 310                 if ( rc != LDAP_SUCCESS ) {
 311                         Debug( LDAP_DEBUG_ANY,
 312                                 "entry failed schema check: %s\n",
 313                                 *text, 0, 0 );
 314                 }
 315
 316                 /* if NOOP then silently revert to saved attrs */
 317                 return rc;
 318         }
 319
 320         /* structuralObjectClass modified! */
 321         if ( ap ) {
 322                 assert( ap->a_desc == slap_schema.si_ad_structuralObjectClass );
 323                 if ( !op->o_noop ) {
 324                         bdb_modify_idxflags( op, slap_schema.si_ad_structuralObjectClass,
 325                                 1, e->e_attrs, save_attrs );
 326                 }
 327         }
 328
 329         /* update the indices of the modified attributes */
 330
 331         /* start with deleting the old index entries */
 332         for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 333                 if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
 334                         struct berval *vals;
 335                         Attribute *a2;
 336                         ap->a_flags &= ~SLAP_ATTR_IXDEL;
 337                         a2 = attr_find( e->e_attrs, ap->a_desc );
 338                         if ( a2 ) {
 339                                 /* need to detect which values were deleted */
 340                                 int i, j;
 341                                 vals = op->o_tmpalloc( (ap->a_numvals + 1) *
 342                                         sizeof(struct berval), op->o_tmpmemctx );
 343                                 j = 0;
 344                                 for ( i=0; i < ap->a_numvals; i++ ) {
 345                                         rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 346                                                 &ap->a_nvals[i], NULL, op->o_tmpmemctx );
 347                                         /* Save deleted values */
 348                                         if ( rc == LDAP_NO_SUCH_ATTRIBUTE )
 349                                                 vals[j++] = ap->a_nvals[i];
 350                                 }
 351                                 BER_BVZERO(vals+j);
 352                         } else {
 353                                 /* attribute was completely deleted */
 354                                 vals = ap->a_nvals;
 355                         }
 356                         rc = 0;
 357                         if ( !BER_BVISNULL( vals )) {
 358                                 rc = bdb_index_values( op, tid, ap->a_desc,
 359                                         vals, e->e_id, SLAP_INDEX_DELETE_OP );
 360                                 if ( rc != LDAP_SUCCESS ) {
 361                                         Debug( LDAP_DEBUG_ANY,
 362                                                 "%s: attribute \"%s\" index delete failure\n",
 363                                                 op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 364                                         attrs_free( e->e_attrs );
 365                                         e->e_attrs = save_attrs;
 366                                 }
 367                         }
 368                         if ( vals != ap->a_nvals )
 369                                 op->o_tmpfree( vals, op->o_tmpmemctx );
 370                         if ( rc ) return rc;
 371                 }
 372         }
 373
 374         /* add the new index entries */
 375         for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
 376                 if (ap->a_flags & SLAP_ATTR_IXADD) {
 377                         ap->a_flags &= ~SLAP_ATTR_IXADD;
 378                         rc = bdb_index_values( op, tid, ap->a_desc,
 379                                 ap->a_nvals,
 380                                 e->e_id, SLAP_INDEX_ADD_OP );
 381                         if ( rc != LDAP_SUCCESS ) {
 382                                 Debug( LDAP_DEBUG_ANY,
 383                                        "%s: attribute \"%s\" index add failure\n",
 384                                         op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 385                                 attrs_free( e->e_attrs );
 386                                 e->e_attrs = save_attrs;
 387                                 return rc;
 388                         }
 389                 }
 390         }
 391
 392         return rc;
 393 }
 394
 395
 396 int
 397 bdb_modify( Operation *op, SlapReply *rs )
 398 {
 399         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 400         Entry           *e = NULL;
 401         EntryInfo       *ei = NULL;
 402         int             manageDSAit = get_manageDSAit( op );
 403         char textbuf[SLAP_TEXT_BUFLEN];
 404         size_t textlen = sizeof textbuf;
 405         DB_TXN  *ltid = NULL, *lt2;
 406         struct bdb_op_info opinfo = {{{ 0 }}};
 407         Entry           dummy = {0};
 408
 409         DB_LOCK         lock;
 410
 411         int             num_retries = 0;
 412
 413         LDAPControl **preread_ctrl = NULL;
 414         LDAPControl **postread_ctrl = NULL;
 415         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 416         int num_ctrls = 0;
 417
 418         int rc;
 419
 420 #ifdef LDAP_X_TXN
 421         int settle = 0;
 422 #endif
 423
 424         Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(bdb_modify) ": %s\n",
 425                 op->o_req_dn.bv_val, 0, 0 );
 426
 427 #ifdef LDAP_X_TXN
 428         if( op->o_txnSpec ) {
 429                 /* acquire connection lock */
 430                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 431                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
 432                         rs->sr_text = "invalid transaction identifier";
 433                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
 434                         goto txnReturn;
 435                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
 436                         settle=1;
 437                         goto txnReturn;
 438                 }
 439
 440                 if( op->o_conn->c_txn_backend == NULL ) {
 441                         op->o_conn->c_txn_backend = op->o_bd;
 442
 443                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
 444                         rs->sr_text = "transaction cannot span multiple database contexts";
 445                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
 446                         goto txnReturn;
 447                 }
 448
 449                 /* insert operation into transaction */
 450
 451                 rs->sr_text = "transaction specified";
 452                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
 453
 454 txnReturn:
 455                 /* release connection lock */
 456                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 457
 458                 if( !settle ) {
 459                         send_ldap_result( op, rs );
 460                         return rs->sr_err;
 461                 }
 462         }
 463 #endif
 464
 465         ctrls[num_ctrls] = NULL;
 466
 467         /* Don't touch the opattrs, if this is a contextCSN update
 468          * initiated from updatedn */
 469         if ( !be_isupdate(op) || !op->orm_modlist || op->orm_modlist->sml_next ||
 470                  op->orm_modlist->sml_desc != slap_schema.si_ad_contextCSN ) {
 471
 472                 slap_mods_opattrs( op, &op->orm_modlist, 1 );
 473         }
 474
 475         if( 0 ) {
 476 retry:  /* transaction retry */
 477                 if ( dummy.e_attrs ) {
 478                         attrs_free( dummy.e_attrs );
 479                         dummy.e_attrs = NULL;
 480                 }
 481                 if( e != NULL ) {
 482                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 483                         e = NULL;
 484                 }
 485                 Debug(LDAP_DEBUG_TRACE,
 486                         LDAP_XSTRING(bdb_modify) ": retrying...\n", 0, 0, 0);
 487
 488                 rs->sr_err = TXN_ABORT( ltid );
 489                 ltid = NULL;
 490                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 491                 opinfo.boi_oe.oe_key = NULL;
 492                 op->o_do_not_cache = opinfo.boi_acl_cache;
 493                 if( rs->sr_err != 0 ) {
 494                         rs->sr_err = LDAP_OTHER;
 495                         rs->sr_text = "internal error";
 496                         goto return_results;
 497                 }
 498                 if ( op->o_abandon ) {
 499                         rs->sr_err = SLAPD_ABANDON;
 500                         goto return_results;
 501                 }
 502                 bdb_trans_backoff( ++num_retries );
 503         }
 504
 505         /* begin transaction */
 506         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 507                 bdb->bi_db_opflags );
 508         rs->sr_text = NULL;
 509         if( rs->sr_err != 0 ) {
 510                 Debug( LDAP_DEBUG_TRACE,
 511                         LDAP_XSTRING(bdb_modify) ": txn_begin failed: "
 512                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 513                 rs->sr_err = LDAP_OTHER;
 514                 rs->sr_text = "internal error";
 515                 goto return_results;
 516         }
 517
 518         opinfo.boi_oe.oe_key = bdb;
 519         opinfo.boi_txn = ltid;
 520         opinfo.boi_err = 0;
 521         opinfo.boi_acl_cache = op->o_do_not_cache;
 522         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 523
 524         /* get entry or ancestor */
 525         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 526                 &lock );
 527
 528         if ( rs->sr_err != 0 ) {
 529                 Debug( LDAP_DEBUG_TRACE,
 530                         LDAP_XSTRING(bdb_modify) ": dn2entry failed (%d)\n",
 531                         rs->sr_err, 0, 0 );
 532                 switch( rs->sr_err ) {
 533                 case DB_LOCK_DEADLOCK:
 534                 case DB_LOCK_NOTGRANTED:
 535                         goto retry;
 536                 case DB_NOTFOUND:
 537                         break;
 538                 case LDAP_BUSY:
 539                         rs->sr_text = "ldap server busy";
 540                         goto return_results;
 541                 default:
 542                         rs->sr_err = LDAP_OTHER;
 543                         rs->sr_text = "internal error";
 544                         goto return_results;
 545                 }
 546         }
 547
 548         e = ei->bei_e;
 549
 550         /* acquire and lock entry */
 551         /* FIXME: dn2entry() should return non-glue entry */
 552         if (( rs->sr_err == DB_NOTFOUND ) ||
 553                 ( !manageDSAit && e && is_entry_glue( e )))
 554         {
 555                 if ( e != NULL ) {
 556                         rs->sr_matched = ch_strdup( e->e_dn );
 557                         rs->sr_ref = is_entry_referral( e )
 558                                 ? get_entry_referrals( op, e )
 559                                 : NULL;
 560                         bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
 561                         e = NULL;
 562
 563                 } else {
 564                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 565                                 &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 566                 }
 567
 568                 rs->sr_err = LDAP_REFERRAL;
 569                 send_ldap_result( op, rs );
 570
 571                 if ( rs->sr_ref != default_referral ) {
 572                         ber_bvarray_free( rs->sr_ref );
 573                 }
 574                 free( (char *)rs->sr_matched );
 575                 rs->sr_ref = NULL;
 576                 rs->sr_matched = NULL;
 577
 578                 goto done;
 579         }
 580
 581         if ( !manageDSAit && is_entry_referral( e ) ) {
 582                 /* entry is a referral, don't allow modify */
 583                 rs->sr_ref = get_entry_referrals( op, e );
 584
 585                 Debug( LDAP_DEBUG_TRACE,
 586                         LDAP_XSTRING(bdb_modify) ": entry is referral\n",
 587                         0, 0, 0 );
 588
 589                 rs->sr_err = LDAP_REFERRAL;
 590                 rs->sr_matched = e->e_name.bv_val;
 591                 send_ldap_result( op, rs );
 592
 593                 ber_bvarray_free( rs->sr_ref );
 594                 rs->sr_ref = NULL;
 595                 rs->sr_matched = NULL;
 596                 goto done;
 597         }
 598
 599         if ( get_assert( op ) &&
 600                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 601         {
 602                 rs->sr_err = LDAP_ASSERTION_FAILED;
 603                 goto return_results;
 604         }
 605
 606         if( op->o_preread ) {
 607                 if( preread_ctrl == NULL ) {
 608                         preread_ctrl = &ctrls[num_ctrls++];
 609                         ctrls[num_ctrls] = NULL;
 610                 }
 611                 if ( slap_read_controls( op, rs, e,
 612                         &slap_pre_read_bv, preread_ctrl ) )
 613                 {
 614                         Debug( LDAP_DEBUG_TRACE,
 615                                 "<=- " LDAP_XSTRING(bdb_modify) ": pre-read "
 616                                 "failed!\n", 0, 0, 0 );
 617                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 618                                 /* FIXME: is it correct to abort
 619                                  * operation if control fails? */
 620                                 goto return_results;
 621                         }
 622                 }
 623         }
 624
 625         /* nested transaction */
 626         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, bdb->bi_db_opflags );
 627         rs->sr_text = NULL;
 628         if( rs->sr_err != 0 ) {
 629                 Debug( LDAP_DEBUG_TRACE,
 630                         LDAP_XSTRING(bdb_modify) ": txn_begin(2) failed: " "%s (%d)\n",
 631                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 632                 rs->sr_err = LDAP_OTHER;
 633                 rs->sr_text = "internal error";
 634                 goto return_results;
 635         }
 636         /* Modify the entry */
 637         dummy = *e;
 638         rs->sr_err = bdb_modify_internal( op, lt2, op->orm_modlist,
 639                 &dummy, &rs->sr_text, textbuf, textlen );
 640
 641         if( rs->sr_err != LDAP_SUCCESS ) {
 642                 Debug( LDAP_DEBUG_TRACE,
 643                         LDAP_XSTRING(bdb_modify) ": modify failed (%d)\n",
 644                         rs->sr_err, 0, 0 );
 645                 if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
 646                         rs->sr_err = opinfo.boi_err;
 647                 }
 648                 /* Only free attrs if they were dup'd.  */
 649                 if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 650                 switch( rs->sr_err ) {
 651                 case DB_LOCK_DEADLOCK:
 652                 case DB_LOCK_NOTGRANTED:
 653                         goto retry;
 654                 }
 655                 goto return_results;
 656         }
 657
 658         /* change the entry itself */
 659         rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
 660         if ( rs->sr_err != 0 ) {
 661                 Debug( LDAP_DEBUG_TRACE,
 662                         LDAP_XSTRING(bdb_modify) ": id2entry update failed " "(%d)\n",
 663                         rs->sr_err, 0, 0 );
 664                 switch( rs->sr_err ) {
 665                 case DB_LOCK_DEADLOCK:
 666                 case DB_LOCK_NOTGRANTED:
 667                         goto retry;
 668                 }
 669                 rs->sr_text = "entry update failed";
 670                 goto return_results;
 671         }
 672
 673         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 674                 rs->sr_err = LDAP_OTHER;
 675                 rs->sr_text = "txn_commit(2) failed";
 676                 goto return_results;
 677         }
 678
 679         if( op->o_postread ) {
 680                 if( postread_ctrl == NULL ) {
 681                         postread_ctrl = &ctrls[num_ctrls++];
 682                         ctrls[num_ctrls] = NULL;
 683                 }
 684                 if( slap_read_controls( op, rs, &dummy,
 685                         &slap_post_read_bv, postread_ctrl ) )
 686                 {
 687                         Debug( LDAP_DEBUG_TRACE,
 688                                 "<=- " LDAP_XSTRING(bdb_modify)
 689                                 ": post-read failed!\n", 0, 0, 0 );
 690                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 691                                 /* FIXME: is it correct to abort
 692                                  * operation if control fails? */
 693                                 goto return_results;
 694                         }
 695                 }
 696         }
 697
 698         if( op->o_noop ) {
 699                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 700                         rs->sr_text = "txn_abort (no-op) failed";
 701                 } else {
 702                         rs->sr_err = LDAP_X_NO_OPERATION;
 703                         ltid = NULL;
 704                         /* Only free attrs if they were dup'd.  */
 705                         if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 706                         goto return_results;
 707                 }
 708         } else {
 709                 /* may have changed in bdb_modify_internal() */
 710                 e->e_ocflags = dummy.e_ocflags;
 711                 rc = bdb_cache_modify( bdb, e, dummy.e_attrs, ltid, &lock );
 712                 switch( rc ) {
 713                 case DB_LOCK_DEADLOCK:
 714                 case DB_LOCK_NOTGRANTED:
 715                         goto retry;
 716                 }
 717                 dummy.e_attrs = NULL;
 718
 719                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 720         }
 721         ltid = NULL;
 722         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 723         opinfo.boi_oe.oe_key = NULL;
 724
 725         if( rs->sr_err != 0 ) {
 726                 Debug( LDAP_DEBUG_TRACE,
 727                         LDAP_XSTRING(bdb_modify) ": txn_%s failed: %s (%d)\n",
 728                         op->o_noop ? "abort (no-op)" : "commit",
 729                         db_strerror(rs->sr_err), rs->sr_err );
 730                 rs->sr_err = LDAP_OTHER;
 731                 rs->sr_text = "commit failed";
 732
 733                 goto return_results;
 734         }
 735
 736         Debug( LDAP_DEBUG_TRACE,
 737                 LDAP_XSTRING(bdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
 738                 op->o_noop ? " (no-op)" : "",
 739                 dummy.e_id, op->o_req_dn.bv_val );
 740
 741         rs->sr_err = LDAP_SUCCESS;
 742         rs->sr_text = NULL;
 743         if( num_ctrls ) rs->sr_ctrls = ctrls;
 744
 745 return_results:
 746         if( dummy.e_attrs ) {
 747                 attrs_free( dummy.e_attrs );
 748         }
 749         send_ldap_result( op, rs );
 750
 751         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
 752                 TXN_CHECKPOINT( bdb->bi_dbenv,
 753                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 754         }
 755
 756 done:
 757         slap_graduate_commit_csn( op );
 758
 759         if( ltid != NULL ) {
 760                 TXN_ABORT( ltid );
 761         }
 762         if ( opinfo.boi_oe.oe_key ) {
 763                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 764         }
 765
 766         if( e != NULL ) {
 767                 bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
 768         }
 769
 770         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 771                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 772                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 773         }
 774         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 775                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 776                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 777         }
 778
 779         rs->sr_text = NULL;
 780
 781         return rs->sr_err;
 782 }