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                                 struct berval tmp;
 343                                 j = ap->a_numvals;
 344                                 for ( i=0; i<j; ) {
 345                                         rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 346                                                 &ap->a_nvals[i], NULL, op->o_tmpmemctx );
 347                                         /* Move deleted values to end of array */
 348                                         if ( rc == LDAP_NO_SUCH_ATTRIBUTE ) {
 349                                                 j--;
 350                                                 if ( i != j ) {
 351                                                         tmp = ap->a_nvals[j];
 352                                                         ap->a_nvals[j] = ap->a_nvals[i];
 353                                                         ap->a_nvals[i] = tmp;
 354                                                         tmp = ap->a_vals[j];
 355                                                         ap->a_vals[j] = ap->a_vals[i];
 356                                                         ap->a_vals[i] = tmp;
 357                                                 }
 358                                                 continue;
 359                                         }
 360                                         i++;
 361                                 }
 362                                 vals = &ap->a_nvals[j];
 363                         } else {
 364                                 /* attribute was completely deleted */
 365                                 vals = ap->a_nvals;
 366                         }
 367                         if ( !BER_BVISNULL( vals )) {
 368                                 rc = bdb_index_values( op, tid, ap->a_desc,
 369                                         vals, e->e_id, SLAP_INDEX_DELETE_OP );
 370                                 if ( rc != LDAP_SUCCESS ) {
 371                                         Debug( LDAP_DEBUG_ANY,
 372                                                 "%s: attribute \"%s\" index delete failure\n",
 373                                                 op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 374                                         attrs_free( e->e_attrs );
 375                                         e->e_attrs = save_attrs;
 376                                         return rc;
 377                                 }
 378                         }
 379                 }
 380         }
 381
 382         /* add the new index entries */
 383         for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
 384                 if (ap->a_flags & SLAP_ATTR_IXADD) {
 385                         ap->a_flags &= ~SLAP_ATTR_IXADD;
 386                         rc = bdb_index_values( op, tid, ap->a_desc,
 387                                 ap->a_nvals,
 388                                 e->e_id, SLAP_INDEX_ADD_OP );
 389                         if ( rc != LDAP_SUCCESS ) {
 390                                 Debug( LDAP_DEBUG_ANY,
 391                                        "%s: attribute \"%s\" index add failure\n",
 392                                         op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 393                                 attrs_free( e->e_attrs );
 394                                 e->e_attrs = save_attrs;
 395                                 return rc;
 396                         }
 397                 }
 398         }
 399
 400         return rc;
 401 }
 402
 403
 404 int
 405 bdb_modify( Operation *op, SlapReply *rs )
 406 {
 407         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 408         Entry           *e = NULL;
 409         EntryInfo       *ei = NULL;
 410         int             manageDSAit = get_manageDSAit( op );
 411         char textbuf[SLAP_TEXT_BUFLEN];
 412         size_t textlen = sizeof textbuf;
 413         DB_TXN  *ltid = NULL, *lt2;
 414         struct bdb_op_info opinfo = {{{ 0 }}};
 415         Entry           dummy = {0};
 416
 417         DB_LOCK         lock;
 418
 419         int             num_retries = 0;
 420
 421         LDAPControl **preread_ctrl = NULL;
 422         LDAPControl **postread_ctrl = NULL;
 423         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 424         int num_ctrls = 0;
 425
 426         int rc;
 427
 428 #ifdef LDAP_X_TXN
 429         int settle = 0;
 430 #endif
 431
 432         Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(bdb_modify) ": %s\n",
 433                 op->o_req_dn.bv_val, 0, 0 );
 434
 435 #ifdef LDAP_X_TXN
 436         if( op->o_txnSpec ) {
 437                 /* acquire connection lock */
 438                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 439                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
 440                         rs->sr_text = "invalid transaction identifier";
 441                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
 442                         goto txnReturn;
 443                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
 444                         settle=1;
 445                         goto txnReturn;
 446                 }
 447
 448                 if( op->o_conn->c_txn_backend == NULL ) {
 449                         op->o_conn->c_txn_backend = op->o_bd;
 450
 451                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
 452                         rs->sr_text = "transaction cannot span multiple database contexts";
 453                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
 454                         goto txnReturn;
 455                 }
 456
 457                 /* insert operation into transaction */
 458
 459                 rs->sr_text = "transaction specified";
 460                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
 461
 462 txnReturn:
 463                 /* release connection lock */
 464                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 465
 466                 if( !settle ) {
 467                         send_ldap_result( op, rs );
 468                         return rs->sr_err;
 469                 }
 470         }
 471 #endif
 472
 473         ctrls[num_ctrls] = NULL;
 474
 475         /* Don't touch the opattrs, if this is a contextCSN update
 476          * initiated from updatedn */
 477         if ( !be_isupdate(op) || !op->orm_modlist || op->orm_modlist->sml_next ||
 478                  op->orm_modlist->sml_desc != slap_schema.si_ad_contextCSN ) {
 479
 480                 slap_mods_opattrs( op, &op->orm_modlist, 1 );
 481         }
 482
 483         if( 0 ) {
 484 retry:  /* transaction retry */
 485                 if ( dummy.e_attrs ) {
 486                         attrs_free( dummy.e_attrs );
 487                         dummy.e_attrs = NULL;
 488                 }
 489                 if( e != NULL ) {
 490                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 491                         e = NULL;
 492                 }
 493                 Debug(LDAP_DEBUG_TRACE,
 494                         LDAP_XSTRING(bdb_modify) ": retrying...\n", 0, 0, 0);
 495
 496                 rs->sr_err = TXN_ABORT( ltid );
 497                 ltid = NULL;
 498                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 499                 opinfo.boi_oe.oe_key = NULL;
 500                 op->o_do_not_cache = opinfo.boi_acl_cache;
 501                 if( rs->sr_err != 0 ) {
 502                         rs->sr_err = LDAP_OTHER;
 503                         rs->sr_text = "internal error";
 504                         goto return_results;
 505                 }
 506                 if ( op->o_abandon ) {
 507                         rs->sr_err = SLAPD_ABANDON;
 508                         goto return_results;
 509                 }
 510                 bdb_trans_backoff( ++num_retries );
 511         }
 512
 513         /* begin transaction */
 514         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 515                 bdb->bi_db_opflags );
 516         rs->sr_text = NULL;
 517         if( rs->sr_err != 0 ) {
 518                 Debug( LDAP_DEBUG_TRACE,
 519                         LDAP_XSTRING(bdb_modify) ": txn_begin failed: "
 520                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 521                 rs->sr_err = LDAP_OTHER;
 522                 rs->sr_text = "internal error";
 523                 goto return_results;
 524         }
 525
 526         opinfo.boi_oe.oe_key = bdb;
 527         opinfo.boi_txn = ltid;
 528         opinfo.boi_err = 0;
 529         opinfo.boi_acl_cache = op->o_do_not_cache;
 530         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 531
 532         /* get entry or ancestor */
 533         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 534                 &lock );
 535
 536         if ( rs->sr_err != 0 ) {
 537                 Debug( LDAP_DEBUG_TRACE,
 538                         LDAP_XSTRING(bdb_modify) ": dn2entry failed (%d)\n",
 539                         rs->sr_err, 0, 0 );
 540                 switch( rs->sr_err ) {
 541                 case DB_LOCK_DEADLOCK:
 542                 case DB_LOCK_NOTGRANTED:
 543                         goto retry;
 544                 case DB_NOTFOUND:
 545                         break;
 546                 case LDAP_BUSY:
 547                         rs->sr_text = "ldap server busy";
 548                         goto return_results;
 549                 default:
 550                         rs->sr_err = LDAP_OTHER;
 551                         rs->sr_text = "internal error";
 552                         goto return_results;
 553                 }
 554         }
 555
 556         e = ei->bei_e;
 557
 558         /* acquire and lock entry */
 559         /* FIXME: dn2entry() should return non-glue entry */
 560         if (( rs->sr_err == DB_NOTFOUND ) ||
 561                 ( !manageDSAit && e && is_entry_glue( e )))
 562         {
 563                 if ( e != NULL ) {
 564                         rs->sr_matched = ch_strdup( e->e_dn );
 565                         rs->sr_ref = is_entry_referral( e )
 566                                 ? get_entry_referrals( op, e )
 567                                 : NULL;
 568                         bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
 569                         e = NULL;
 570
 571                 } else {
 572                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 573                                 &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 574                 }
 575
 576                 rs->sr_err = LDAP_REFERRAL;
 577                 send_ldap_result( op, rs );
 578
 579                 if ( rs->sr_ref != default_referral ) {
 580                         ber_bvarray_free( rs->sr_ref );
 581                 }
 582                 free( (char *)rs->sr_matched );
 583                 rs->sr_ref = NULL;
 584                 rs->sr_matched = NULL;
 585
 586                 goto done;
 587         }
 588
 589         if ( !manageDSAit && is_entry_referral( e ) ) {
 590                 /* entry is a referral, don't allow modify */
 591                 rs->sr_ref = get_entry_referrals( op, e );
 592
 593                 Debug( LDAP_DEBUG_TRACE,
 594                         LDAP_XSTRING(bdb_modify) ": entry is referral\n",
 595                         0, 0, 0 );
 596
 597                 rs->sr_err = LDAP_REFERRAL;
 598                 rs->sr_matched = e->e_name.bv_val;
 599                 send_ldap_result( op, rs );
 600
 601                 ber_bvarray_free( rs->sr_ref );
 602                 rs->sr_ref = NULL;
 603                 rs->sr_matched = NULL;
 604                 goto done;
 605         }
 606
 607         if ( get_assert( op ) &&
 608                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 609         {
 610                 rs->sr_err = LDAP_ASSERTION_FAILED;
 611                 goto return_results;
 612         }
 613
 614         if( op->o_preread ) {
 615                 if( preread_ctrl == NULL ) {
 616                         preread_ctrl = &ctrls[num_ctrls++];
 617                         ctrls[num_ctrls] = NULL;
 618                 }
 619                 if ( slap_read_controls( op, rs, e,
 620                         &slap_pre_read_bv, preread_ctrl ) )
 621                 {
 622                         Debug( LDAP_DEBUG_TRACE,
 623                                 "<=- " LDAP_XSTRING(bdb_modify) ": pre-read "
 624                                 "failed!\n", 0, 0, 0 );
 625                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 626                                 /* FIXME: is it correct to abort
 627                                  * operation if control fails? */
 628                                 goto return_results;
 629                         }
 630                 }
 631         }
 632
 633         /* nested transaction */
 634         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, bdb->bi_db_opflags );
 635         rs->sr_text = NULL;
 636         if( rs->sr_err != 0 ) {
 637                 Debug( LDAP_DEBUG_TRACE,
 638                         LDAP_XSTRING(bdb_modify) ": txn_begin(2) failed: " "%s (%d)\n",
 639                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 640                 rs->sr_err = LDAP_OTHER;
 641                 rs->sr_text = "internal error";
 642                 goto return_results;
 643         }
 644         /* Modify the entry */
 645         dummy = *e;
 646         rs->sr_err = bdb_modify_internal( op, lt2, op->orm_modlist,
 647                 &dummy, &rs->sr_text, textbuf, textlen );
 648
 649         if( rs->sr_err != LDAP_SUCCESS ) {
 650                 Debug( LDAP_DEBUG_TRACE,
 651                         LDAP_XSTRING(bdb_modify) ": modify failed (%d)\n",
 652                         rs->sr_err, 0, 0 );
 653                 if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
 654                         rs->sr_err = opinfo.boi_err;
 655                 }
 656                 /* Only free attrs if they were dup'd.  */
 657                 if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 658                 switch( rs->sr_err ) {
 659                 case DB_LOCK_DEADLOCK:
 660                 case DB_LOCK_NOTGRANTED:
 661                         goto retry;
 662                 }
 663                 goto return_results;
 664         }
 665
 666         /* change the entry itself */
 667         rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
 668         if ( rs->sr_err != 0 ) {
 669                 Debug( LDAP_DEBUG_TRACE,
 670                         LDAP_XSTRING(bdb_modify) ": id2entry update failed " "(%d)\n",
 671                         rs->sr_err, 0, 0 );
 672                 switch( rs->sr_err ) {
 673                 case DB_LOCK_DEADLOCK:
 674                 case DB_LOCK_NOTGRANTED:
 675                         goto retry;
 676                 }
 677                 rs->sr_text = "entry update failed";
 678                 goto return_results;
 679         }
 680
 681         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 682                 rs->sr_err = LDAP_OTHER;
 683                 rs->sr_text = "txn_commit(2) failed";
 684                 goto return_results;
 685         }
 686
 687         if( op->o_postread ) {
 688                 if( postread_ctrl == NULL ) {
 689                         postread_ctrl = &ctrls[num_ctrls++];
 690                         ctrls[num_ctrls] = NULL;
 691                 }
 692                 if( slap_read_controls( op, rs, &dummy,
 693                         &slap_post_read_bv, postread_ctrl ) )
 694                 {
 695                         Debug( LDAP_DEBUG_TRACE,
 696                                 "<=- " LDAP_XSTRING(bdb_modify)
 697                                 ": post-read failed!\n", 0, 0, 0 );
 698                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 699                                 /* FIXME: is it correct to abort
 700                                  * operation if control fails? */
 701                                 goto return_results;
 702                         }
 703                 }
 704         }
 705
 706         if( op->o_noop ) {
 707                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 708                         rs->sr_text = "txn_abort (no-op) failed";
 709                 } else {
 710                         rs->sr_err = LDAP_X_NO_OPERATION;
 711                         ltid = NULL;
 712                         /* Only free attrs if they were dup'd.  */
 713                         if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 714                         goto return_results;
 715                 }
 716         } else {
 717                 /* may have changed in bdb_modify_internal() */
 718                 e->e_ocflags = dummy.e_ocflags;
 719                 rc = bdb_cache_modify( bdb, e, dummy.e_attrs, ltid, &lock );
 720                 switch( rc ) {
 721                 case DB_LOCK_DEADLOCK:
 722                 case DB_LOCK_NOTGRANTED:
 723                         goto retry;
 724                 }
 725                 dummy.e_attrs = NULL;
 726
 727                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 728         }
 729         ltid = NULL;
 730         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 731         opinfo.boi_oe.oe_key = NULL;
 732
 733         if( rs->sr_err != 0 ) {
 734                 Debug( LDAP_DEBUG_TRACE,
 735                         LDAP_XSTRING(bdb_modify) ": txn_%s failed: %s (%d)\n",
 736                         op->o_noop ? "abort (no-op)" : "commit",
 737                         db_strerror(rs->sr_err), rs->sr_err );
 738                 rs->sr_err = LDAP_OTHER;
 739                 rs->sr_text = "commit failed";
 740
 741                 goto return_results;
 742         }
 743
 744         Debug( LDAP_DEBUG_TRACE,
 745                 LDAP_XSTRING(bdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
 746                 op->o_noop ? " (no-op)" : "",
 747                 dummy.e_id, op->o_req_dn.bv_val );
 748
 749         rs->sr_err = LDAP_SUCCESS;
 750         rs->sr_text = NULL;
 751         if( num_ctrls ) rs->sr_ctrls = ctrls;
 752
 753 return_results:
 754         if( dummy.e_attrs ) {
 755                 attrs_free( dummy.e_attrs );
 756         }
 757         send_ldap_result( op, rs );
 758
 759         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
 760                 TXN_CHECKPOINT( bdb->bi_dbenv,
 761                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 762         }
 763
 764 done:
 765         slap_graduate_commit_csn( op );
 766
 767         if( ltid != NULL ) {
 768                 TXN_ABORT( ltid );
 769         }
 770         if ( opinfo.boi_oe.oe_key ) {
 771                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 772         }
 773
 774         if( e != NULL ) {
 775                 bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
 776         }
 777
 778         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 779                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 780                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 781         }
 782         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 783                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 784                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 785         }
 786
 787         rs->sr_text = NULL;
 788
 789         return rs->sr_err;
 790 }