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 2000-2013 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_SUCCESS ) {
 232                                 got_delete = 1;
 233                         } else if ( err == LDAP_NO_SUCH_ATTRIBUTE ) {
 234                                 err = LDAP_SUCCESS;
 235                         }
 236
 237                         if( err != LDAP_SUCCESS ) {
 238                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 239                                         err, *text, 0);
 240                         }
 241                         break;
 242
 243                 case SLAP_MOD_ADD_IF_NOT_PRESENT:
 244                         if ( attr_find( e->e_attrs, mod->sm_desc ) != NULL ) {
 245                                 /* skip */
 246                                 err = LDAP_SUCCESS;
 247                                 break;
 248                         }
 249
 250                         Debug(LDAP_DEBUG_ARGS,
 251                                 "bdb_modify_internal: add_if_not_present %s\n",
 252                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 253                         /* Avoid problems in index_add_mods()
 254                          * We need to add index if necessary.
 255                          */
 256                         mod->sm_op = LDAP_MOD_ADD;
 257
 258                         err = modify_add_values( e, mod, get_permissiveModify(op),
 259                                 text, textbuf, textlen );
 260
 261                         mod->sm_op = SLAP_MOD_ADD_IF_NOT_PRESENT;
 262
 263                         if( err != LDAP_SUCCESS ) {
 264                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 265                                         err, *text, 0);
 266                         }
 267                         break;
 268
 269                 default:
 270                         Debug(LDAP_DEBUG_ANY, "bdb_modify_internal: invalid op %d\n",
 271                                 mod->sm_op, 0, 0);
 272                         *text = "Invalid modify operation";
 273                         err = LDAP_OTHER;
 274                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 275                                 err, *text, 0);
 276                 }
 277
 278                 if ( err != LDAP_SUCCESS ) {
 279                         attrs_free( e->e_attrs );
 280                         e->e_attrs = save_attrs;
 281                         /* unlock entry, delete from cache */
 282                         return err;
 283                 }
 284
 285                 /* If objectClass was modified, reset the flags */
 286                 if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
 287                         e->e_ocflags = 0;
 288                 }
 289
 290                 if ( glue_attr_delete ) e->e_ocflags = 0;
 291
 292
 293                 /* check if modified attribute was indexed
 294                  * but not in case of NOOP... */
 295                 if ( !op->o_noop ) {
 296                         bdb_modify_idxflags( op, mod->sm_desc, got_delete, e->e_attrs, save_attrs );
 297                 }
 298         }
 299
 300         /* check that the entry still obeys the schema */
 301         ap = NULL;
 302         rc = entry_schema_check( op, e, save_attrs, get_relax(op), 0, &ap,
 303                 text, textbuf, textlen );
 304         if ( rc != LDAP_SUCCESS || op->o_noop ) {
 305                 attrs_free( e->e_attrs );
 306                 /* clear the indexing flags */
 307                 for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 308                         ap->a_flags &= ~(SLAP_ATTR_IXADD|SLAP_ATTR_IXDEL);
 309                 }
 310                 e->e_attrs = save_attrs;
 311
 312                 if ( rc != LDAP_SUCCESS ) {
 313                         Debug( LDAP_DEBUG_ANY,
 314                                 "entry failed schema check: %s\n",
 315                                 *text, 0, 0 );
 316                 }
 317
 318                 /* if NOOP then silently revert to saved attrs */
 319                 return rc;
 320         }
 321
 322         /* structuralObjectClass modified! */
 323         if ( ap ) {
 324                 assert( ap->a_desc == slap_schema.si_ad_structuralObjectClass );
 325                 if ( !op->o_noop ) {
 326                         bdb_modify_idxflags( op, slap_schema.si_ad_structuralObjectClass,
 327                                 1, e->e_attrs, save_attrs );
 328                 }
 329         }
 330
 331         /* update the indices of the modified attributes */
 332
 333         /* start with deleting the old index entries */
 334         for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 335                 if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
 336                         struct berval *vals;
 337                         Attribute *a2;
 338                         ap->a_flags &= ~SLAP_ATTR_IXDEL;
 339                         a2 = attr_find( e->e_attrs, ap->a_desc );
 340                         if ( a2 ) {
 341                                 /* need to detect which values were deleted */
 342                                 int i, j;
 343                                 /* let add know there were deletes */
 344                                 if ( a2->a_flags & SLAP_ATTR_IXADD )
 345                                         a2->a_flags |= SLAP_ATTR_IXDEL;
 346                                 vals = op->o_tmpalloc( (ap->a_numvals + 1) *
 347                                         sizeof(struct berval), op->o_tmpmemctx );
 348                                 j = 0;
 349                                 for ( i=0; i < ap->a_numvals; i++ ) {
 350                                         rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 351                                                 &ap->a_nvals[i], NULL, op->o_tmpmemctx );
 352                                         /* Save deleted values */
 353                                         if ( rc == LDAP_NO_SUCH_ATTRIBUTE )
 354                                                 vals[j++] = ap->a_nvals[i];
 355                                 }
 356                                 BER_BVZERO(vals+j);
 357                         } else {
 358                                 /* attribute was completely deleted */
 359                                 vals = ap->a_nvals;
 360                         }
 361                         rc = 0;
 362                         if ( !BER_BVISNULL( vals )) {
 363                                 rc = bdb_index_values( op, tid, ap->a_desc,
 364                                         vals, e->e_id, SLAP_INDEX_DELETE_OP );
 365                                 if ( rc != LDAP_SUCCESS ) {
 366                                         Debug( LDAP_DEBUG_ANY,
 367                                                 "%s: attribute \"%s\" index delete failure\n",
 368                                                 op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 369                                         attrs_free( e->e_attrs );
 370                                         e->e_attrs = save_attrs;
 371                                 }
 372                         }
 373                         if ( vals != ap->a_nvals )
 374                                 op->o_tmpfree( vals, op->o_tmpmemctx );
 375                         if ( rc ) return rc;
 376                 }
 377         }
 378
 379         /* add the new index entries */
 380         for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
 381                 if (ap->a_flags & SLAP_ATTR_IXADD) {
 382                         ap->a_flags &= ~SLAP_ATTR_IXADD;
 383                         if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
 384                                 /* if any values were deleted, we must readd index
 385                                  * for all remaining values.
 386                                  */
 387                                 ap->a_flags &= ~SLAP_ATTR_IXDEL;
 388                                 rc = bdb_index_values( op, tid, ap->a_desc,
 389                                         ap->a_nvals,
 390                                         e->e_id, SLAP_INDEX_ADD_OP );
 391                         } else {
 392                                 /* if this was only an add, we only need to index
 393                                  * the added values.
 394                                  */
 395                                 for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
 396                                         struct berval *vals;
 397                                         if ( ml->sml_desc != ap->a_desc || !ml->sml_numvals )
 398                                                 continue;
 399                                         switch( ml->sml_op ) {
 400                                         case LDAP_MOD_ADD:
 401                                         case LDAP_MOD_REPLACE:
 402                                         case LDAP_MOD_INCREMENT:
 403                                         case SLAP_MOD_SOFTADD:
 404                                         case SLAP_MOD_ADD_IF_NOT_PRESENT:
 405                                                 if ( ml->sml_op == LDAP_MOD_INCREMENT )
 406                                                         vals = ap->a_nvals;
 407                                                 else if ( ml->sml_nvalues )
 408                                                         vals = ml->sml_nvalues;
 409                                                 else
 410                                                         vals = ml->sml_values;
 411                                                 rc = bdb_index_values( op, tid, ap->a_desc,
 412                                                         vals, e->e_id, SLAP_INDEX_ADD_OP );
 413                                                 break;
 414                                         }
 415                                         if ( rc )
 416                                                 break;
 417                                 }
 418                         }
 419                         if ( rc != LDAP_SUCCESS ) {
 420                                 Debug( LDAP_DEBUG_ANY,
 421                                        "%s: attribute \"%s\" index add failure\n",
 422                                         op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 423                                 attrs_free( e->e_attrs );
 424                                 e->e_attrs = save_attrs;
 425                                 return rc;
 426                         }
 427                 }
 428         }
 429
 430         return rc;
 431 }
 432
 433
 434 int
 435 bdb_modify( Operation *op, SlapReply *rs )
 436 {
 437         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 438         Entry           *e = NULL;
 439         EntryInfo       *ei = NULL;
 440         int             manageDSAit = get_manageDSAit( op );
 441         char textbuf[SLAP_TEXT_BUFLEN];
 442         size_t textlen = sizeof textbuf;
 443         DB_TXN  *ltid = NULL, *lt2;
 444         struct bdb_op_info opinfo = {{{ 0 }}};
 445         Entry           dummy = {0};
 446
 447         DB_LOCK         lock;
 448
 449         int             num_retries = 0;
 450
 451         LDAPControl **preread_ctrl = NULL;
 452         LDAPControl **postread_ctrl = NULL;
 453         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 454         int num_ctrls = 0;
 455
 456         int rc;
 457
 458 #ifdef LDAP_X_TXN
 459         int settle = 0;
 460 #endif
 461
 462         Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(bdb_modify) ": %s\n",
 463                 op->o_req_dn.bv_val, 0, 0 );
 464
 465 #ifdef LDAP_X_TXN
 466         if( op->o_txnSpec ) {
 467                 /* acquire connection lock */
 468                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 469                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
 470                         rs->sr_text = "invalid transaction identifier";
 471                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
 472                         goto txnReturn;
 473                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
 474                         settle=1;
 475                         goto txnReturn;
 476                 }
 477
 478                 if( op->o_conn->c_txn_backend == NULL ) {
 479                         op->o_conn->c_txn_backend = op->o_bd;
 480
 481                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
 482                         rs->sr_text = "transaction cannot span multiple database contexts";
 483                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
 484                         goto txnReturn;
 485                 }
 486
 487                 /* insert operation into transaction */
 488
 489                 rs->sr_text = "transaction specified";
 490                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
 491
 492 txnReturn:
 493                 /* release connection lock */
 494                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 495
 496                 if( !settle ) {
 497                         send_ldap_result( op, rs );
 498                         return rs->sr_err;
 499                 }
 500         }
 501 #endif
 502
 503         ctrls[num_ctrls] = NULL;
 504
 505         /* Don't touch the opattrs, if this is a contextCSN update
 506          * initiated from updatedn */
 507         if ( !be_isupdate(op) || !op->orm_modlist || op->orm_modlist->sml_next ||
 508                  op->orm_modlist->sml_desc != slap_schema.si_ad_contextCSN ) {
 509
 510                 slap_mods_opattrs( op, &op->orm_modlist, 1 );
 511         }
 512
 513         if( 0 ) {
 514 retry:  /* transaction retry */
 515                 if ( dummy.e_attrs ) {
 516                         attrs_free( dummy.e_attrs );
 517                         dummy.e_attrs = NULL;
 518                 }
 519                 if( e != NULL ) {
 520                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 521                         e = NULL;
 522                 }
 523                 Debug(LDAP_DEBUG_TRACE,
 524                         LDAP_XSTRING(bdb_modify) ": retrying...\n", 0, 0, 0);
 525
 526                 rs->sr_err = TXN_ABORT( ltid );
 527                 ltid = NULL;
 528                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 529                 opinfo.boi_oe.oe_key = NULL;
 530                 op->o_do_not_cache = opinfo.boi_acl_cache;
 531                 if( rs->sr_err != 0 ) {
 532                         rs->sr_err = LDAP_OTHER;
 533                         rs->sr_text = "internal error";
 534                         goto return_results;
 535                 }
 536                 if ( op->o_abandon ) {
 537                         rs->sr_err = SLAPD_ABANDON;
 538                         goto return_results;
 539                 }
 540                 bdb_trans_backoff( ++num_retries );
 541         }
 542
 543         /* begin transaction */
 544         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 545                 bdb->bi_db_opflags );
 546         rs->sr_text = NULL;
 547         if( rs->sr_err != 0 ) {
 548                 Debug( LDAP_DEBUG_TRACE,
 549                         LDAP_XSTRING(bdb_modify) ": txn_begin failed: "
 550                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 551                 rs->sr_err = LDAP_OTHER;
 552                 rs->sr_text = "internal error";
 553                 goto return_results;
 554         }
 555         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": txn1 id: %x\n",
 556                 ltid->id(ltid), 0, 0 );
 557
 558         opinfo.boi_oe.oe_key = bdb;
 559         opinfo.boi_txn = ltid;
 560         opinfo.boi_err = 0;
 561         opinfo.boi_acl_cache = op->o_do_not_cache;
 562         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 563
 564         /* get entry or ancestor */
 565         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 566                 &lock );
 567
 568         if ( rs->sr_err != 0 ) {
 569                 Debug( LDAP_DEBUG_TRACE,
 570                         LDAP_XSTRING(bdb_modify) ": dn2entry failed (%d)\n",
 571                         rs->sr_err, 0, 0 );
 572                 switch( rs->sr_err ) {
 573                 case DB_LOCK_DEADLOCK:
 574                 case DB_LOCK_NOTGRANTED:
 575                         goto retry;
 576                 case DB_NOTFOUND:
 577                         break;
 578                 case LDAP_BUSY:
 579                         rs->sr_text = "ldap server busy";
 580                         goto return_results;
 581                 default:
 582                         rs->sr_err = LDAP_OTHER;
 583                         rs->sr_text = "internal error";
 584                         goto return_results;
 585                 }
 586         }
 587
 588         e = ei->bei_e;
 589
 590         /* acquire and lock entry */
 591         /* FIXME: dn2entry() should return non-glue entry */
 592         if (( rs->sr_err == DB_NOTFOUND ) ||
 593                 ( !manageDSAit && e && is_entry_glue( e )))
 594         {
 595                 if ( e != NULL ) {
 596                         rs->sr_matched = ch_strdup( e->e_dn );
 597                         rs->sr_ref = is_entry_referral( e )
 598                                 ? get_entry_referrals( op, e )
 599                                 : NULL;
 600                         bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
 601                         e = NULL;
 602
 603                 } else {
 604                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 605                                 &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 606                 }
 607
 608                 rs->sr_err = LDAP_REFERRAL;
 609                 send_ldap_result( op, rs );
 610
 611                 if ( rs->sr_ref != default_referral ) {
 612                         ber_bvarray_free( rs->sr_ref );
 613                 }
 614                 free( (char *)rs->sr_matched );
 615                 rs->sr_ref = NULL;
 616                 rs->sr_matched = NULL;
 617
 618                 goto done;
 619         }
 620
 621         if ( !manageDSAit && is_entry_referral( e ) ) {
 622                 /* entry is a referral, don't allow modify */
 623                 rs->sr_ref = get_entry_referrals( op, e );
 624
 625                 Debug( LDAP_DEBUG_TRACE,
 626                         LDAP_XSTRING(bdb_modify) ": entry is referral\n",
 627                         0, 0, 0 );
 628
 629                 rs->sr_err = LDAP_REFERRAL;
 630                 rs->sr_matched = e->e_name.bv_val;
 631                 send_ldap_result( op, rs );
 632
 633                 ber_bvarray_free( rs->sr_ref );
 634                 rs->sr_ref = NULL;
 635                 rs->sr_matched = NULL;
 636                 goto done;
 637         }
 638
 639         if ( get_assert( op ) &&
 640                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 641         {
 642                 rs->sr_err = LDAP_ASSERTION_FAILED;
 643                 goto return_results;
 644         }
 645
 646         if( op->o_preread ) {
 647                 if( preread_ctrl == NULL ) {
 648                         preread_ctrl = &ctrls[num_ctrls++];
 649                         ctrls[num_ctrls] = NULL;
 650                 }
 651                 if ( slap_read_controls( op, rs, e,
 652                         &slap_pre_read_bv, preread_ctrl ) )
 653                 {
 654                         Debug( LDAP_DEBUG_TRACE,
 655                                 "<=- " LDAP_XSTRING(bdb_modify) ": pre-read "
 656                                 "failed!\n", 0, 0, 0 );
 657                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 658                                 /* FIXME: is it correct to abort
 659                                  * operation if control fails? */
 660                                 goto return_results;
 661                         }
 662                 }
 663         }
 664
 665         /* nested transaction */
 666         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, bdb->bi_db_opflags );
 667         rs->sr_text = NULL;
 668         if( rs->sr_err != 0 ) {
 669                 Debug( LDAP_DEBUG_TRACE,
 670                         LDAP_XSTRING(bdb_modify) ": txn_begin(2) failed: " "%s (%d)\n",
 671                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 672                 rs->sr_err = LDAP_OTHER;
 673                 rs->sr_text = "internal error";
 674                 goto return_results;
 675         }
 676         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": txn2 id: %x\n",
 677                 lt2->id(lt2), 0, 0 );
 678         /* Modify the entry */
 679         dummy = *e;
 680         rs->sr_err = bdb_modify_internal( op, lt2, op->orm_modlist,
 681                 &dummy, &rs->sr_text, textbuf, textlen );
 682
 683         if( rs->sr_err != LDAP_SUCCESS ) {
 684                 Debug( LDAP_DEBUG_TRACE,
 685                         LDAP_XSTRING(bdb_modify) ": modify failed (%d)\n",
 686                         rs->sr_err, 0, 0 );
 687                 if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
 688                         rs->sr_err = opinfo.boi_err;
 689                 }
 690                 /* Only free attrs if they were dup'd.  */
 691                 if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 692                 switch( rs->sr_err ) {
 693                 case DB_LOCK_DEADLOCK:
 694                 case DB_LOCK_NOTGRANTED:
 695                         goto retry;
 696                 }
 697                 goto return_results;
 698         }
 699
 700         /* change the entry itself */
 701         rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
 702         if ( rs->sr_err != 0 ) {
 703                 Debug( LDAP_DEBUG_TRACE,
 704                         LDAP_XSTRING(bdb_modify) ": id2entry update failed " "(%d)\n",
 705                         rs->sr_err, 0, 0 );
 706                 switch( rs->sr_err ) {
 707                 case DB_LOCK_DEADLOCK:
 708                 case DB_LOCK_NOTGRANTED:
 709                         goto retry;
 710                 }
 711                 rs->sr_text = "entry update failed";
 712                 goto return_results;
 713         }
 714
 715         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 716                 rs->sr_err = LDAP_OTHER;
 717                 rs->sr_text = "txn_commit(2) failed";
 718                 goto return_results;
 719         }
 720
 721         if( op->o_postread ) {
 722                 if( postread_ctrl == NULL ) {
 723                         postread_ctrl = &ctrls[num_ctrls++];
 724                         ctrls[num_ctrls] = NULL;
 725                 }
 726                 if( slap_read_controls( op, rs, &dummy,
 727                         &slap_post_read_bv, postread_ctrl ) )
 728                 {
 729                         Debug( LDAP_DEBUG_TRACE,
 730                                 "<=- " LDAP_XSTRING(bdb_modify)
 731                                 ": post-read failed!\n", 0, 0, 0 );
 732                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 733                                 /* FIXME: is it correct to abort
 734                                  * operation if control fails? */
 735                                 goto return_results;
 736                         }
 737                 }
 738         }
 739
 740         if( op->o_noop ) {
 741                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 742                         rs->sr_text = "txn_abort (no-op) failed";
 743                 } else {
 744                         rs->sr_err = LDAP_X_NO_OPERATION;
 745                         ltid = NULL;
 746                         /* Only free attrs if they were dup'd.  */
 747                         if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 748                         goto return_results;
 749                 }
 750         } else {
 751                 /* may have changed in bdb_modify_internal() */
 752                 e->e_ocflags = dummy.e_ocflags;
 753                 rc = bdb_cache_modify( bdb, e, dummy.e_attrs, ltid, &lock );
 754                 switch( rc ) {
 755                 case DB_LOCK_DEADLOCK:
 756                 case DB_LOCK_NOTGRANTED:
 757                         goto retry;
 758                 }
 759                 dummy.e_attrs = NULL;
 760
 761                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 762         }
 763         ltid = NULL;
 764         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 765         opinfo.boi_oe.oe_key = NULL;
 766
 767         if( rs->sr_err != 0 ) {
 768                 Debug( LDAP_DEBUG_TRACE,
 769                         LDAP_XSTRING(bdb_modify) ": txn_%s failed: %s (%d)\n",
 770                         op->o_noop ? "abort (no-op)" : "commit",
 771                         db_strerror(rs->sr_err), rs->sr_err );
 772                 rs->sr_err = LDAP_OTHER;
 773                 rs->sr_text = "commit failed";
 774
 775                 goto return_results;
 776         }
 777
 778         Debug( LDAP_DEBUG_TRACE,
 779                 LDAP_XSTRING(bdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
 780                 op->o_noop ? " (no-op)" : "",
 781                 dummy.e_id, op->o_req_dn.bv_val );
 782
 783         rs->sr_err = LDAP_SUCCESS;
 784         rs->sr_text = NULL;
 785         if( num_ctrls ) rs->sr_ctrls = ctrls;
 786
 787 return_results:
 788         if( dummy.e_attrs ) {
 789                 attrs_free( dummy.e_attrs );
 790         }
 791         send_ldap_result( op, rs );
 792
 793         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
 794                 TXN_CHECKPOINT( bdb->bi_dbenv,
 795                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 796         }
 797
 798 done:
 799         slap_graduate_commit_csn( op );
 800
 801         if( ltid != NULL ) {
 802                 TXN_ABORT( ltid );
 803         }
 804         if ( opinfo.boi_oe.oe_key ) {
 805                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 806         }
 807
 808         if( e != NULL ) {
 809                 bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
 810         }
 811
 812         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 813                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 814                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 815         }
 816         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 817                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 818                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 819         }
 820
 821         rs->sr_text = NULL;
 822
 823         return rs->sr_err;
 824 }