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 2000-2009 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                 default:
 219                         Debug(LDAP_DEBUG_ANY, "bdb_modify_internal: invalid op %d\n",
 220                                 mod->sm_op, 0, 0);
 221                         *text = "Invalid modify operation";
 222                         err = LDAP_OTHER;
 223                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
 224                                 err, *text, 0);
 225                 }
 226
 227                 if ( err != LDAP_SUCCESS ) {
 228                         attrs_free( e->e_attrs );
 229                         e->e_attrs = save_attrs;
 230                         /* unlock entry, delete from cache */
 231                         return err;
 232                 }
 233
 234                 /* If objectClass was modified, reset the flags */
 235                 if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
 236                         e->e_ocflags = 0;
 237                 }
 238
 239                 if ( glue_attr_delete ) e->e_ocflags = 0;
 240
 241
 242                 /* check if modified attribute was indexed
 243                  * but not in case of NOOP... */
 244                 if ( !op->o_noop ) {
 245                         bdb_modify_idxflags( op, mod->sm_desc, got_delete, e->e_attrs, save_attrs );
 246                 }
 247         }
 248
 249         /* check that the entry still obeys the schema */
 250         ap = NULL;
 251         rc = entry_schema_check( op, e, save_attrs, get_relax(op), 0, &ap,
 252                 text, textbuf, textlen );
 253         if ( rc != LDAP_SUCCESS || op->o_noop ) {
 254                 attrs_free( e->e_attrs );
 255                 /* clear the indexing flags */
 256                 for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 257                         ap->a_flags &= ~(SLAP_ATTR_IXADD|SLAP_ATTR_IXDEL);
 258                 }
 259                 e->e_attrs = save_attrs;
 260
 261                 if ( rc != LDAP_SUCCESS ) {
 262                         Debug( LDAP_DEBUG_ANY,
 263                                 "entry failed schema check: %s\n",
 264                                 *text, 0, 0 );
 265                 }
 266
 267                 /* if NOOP then silently revert to saved attrs */
 268                 return rc;
 269         }
 270
 271         /* structuralObjectClass modified! */
 272         if ( ap ) {
 273                 assert( ap->a_desc == slap_schema.si_ad_structuralObjectClass );
 274                 if ( !op->o_noop ) {
 275                         bdb_modify_idxflags( op, slap_schema.si_ad_structuralObjectClass,
 276                                 1, e->e_attrs, save_attrs );
 277                 }
 278         }
 279
 280         /* update the indices of the modified attributes */
 281
 282         /* start with deleting the old index entries */
 283         for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 284                 if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
 285                         struct berval *vals;
 286                         Attribute *a2;
 287                         ap->a_flags &= ~SLAP_ATTR_IXDEL;
 288                         a2 = attr_find( e->e_attrs, ap->a_desc );
 289                         if ( a2 ) {
 290                                 /* need to detect which values were deleted */
 291                                 int i, j;
 292                                 struct berval tmp;
 293                                 j = ap->a_numvals;
 294                                 for ( i=0; i<j; ) {
 295                                         rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 296                                                 &ap->a_nvals[i], NULL, op->o_tmpmemctx );
 297                                         /* Move deleted values to end of array */
 298                                         if ( rc == LDAP_NO_SUCH_ATTRIBUTE ) {
 299                                                 j--;
 300                                                 if ( i != j ) {
 301                                                         tmp = ap->a_nvals[j];
 302                                                         ap->a_nvals[j] = ap->a_nvals[i];
 303                                                         ap->a_nvals[i] = tmp;
 304                                                         tmp = ap->a_vals[j];
 305                                                         ap->a_vals[j] = ap->a_vals[i];
 306                                                         ap->a_vals[i] = tmp;
 307                                                 }
 308                                                 continue;
 309                                         }
 310                                         i++;
 311                                 }
 312                                 vals = &ap->a_nvals[j];
 313                         } else {
 314                                 /* attribute was completely deleted */
 315                                 vals = ap->a_nvals;
 316                         }
 317                         if ( !BER_BVISNULL( vals )) {
 318                                 rc = bdb_index_values( op, tid, ap->a_desc,
 319                                         vals, e->e_id, SLAP_INDEX_DELETE_OP );
 320                                 if ( rc != LDAP_SUCCESS ) {
 321                                         Debug( LDAP_DEBUG_ANY,
 322                                                 "%s: attribute \"%s\" index delete failure\n",
 323                                                 op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 324                                         attrs_free( e->e_attrs );
 325                                         e->e_attrs = save_attrs;
 326                                         return rc;
 327                                 }
 328                         }
 329                 }
 330         }
 331
 332         /* add the new index entries */
 333         for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
 334                 if (ap->a_flags & SLAP_ATTR_IXADD) {
 335                         ap->a_flags &= ~SLAP_ATTR_IXADD;
 336                         rc = bdb_index_values( op, tid, ap->a_desc,
 337                                 ap->a_nvals,
 338                                 e->e_id, SLAP_INDEX_ADD_OP );
 339                         if ( rc != LDAP_SUCCESS ) {
 340                                 Debug( LDAP_DEBUG_ANY,
 341                                        "%s: attribute \"%s\" index add failure\n",
 342                                         op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 343                                 attrs_free( e->e_attrs );
 344                                 e->e_attrs = save_attrs;
 345                                 return rc;
 346                         }
 347                 }
 348         }
 349
 350         return rc;
 351 }
 352
 353
 354 int
 355 bdb_modify( Operation *op, SlapReply *rs )
 356 {
 357         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 358         Entry           *e = NULL;
 359         EntryInfo       *ei = NULL;
 360         int             manageDSAit = get_manageDSAit( op );
 361         char textbuf[SLAP_TEXT_BUFLEN];
 362         size_t textlen = sizeof textbuf;
 363         DB_TXN  *ltid = NULL, *lt2;
 364         struct bdb_op_info opinfo = {{{ 0 }}};
 365         Entry           dummy = {0};
 366         int                     fakeroot = 0;
 367
 368         DB_LOCK         lock;
 369
 370         int             num_retries = 0;
 371
 372         LDAPControl **preread_ctrl = NULL;
 373         LDAPControl **postread_ctrl = NULL;
 374         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 375         int num_ctrls = 0;
 376
 377         int rc;
 378
 379 #ifdef LDAP_X_TXN
 380         int settle = 0;
 381 #endif
 382
 383         Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(bdb_modify) ": %s\n",
 384                 op->o_req_dn.bv_val, 0, 0 );
 385
 386 #ifdef LDAP_X_TXN
 387         if( op->o_txnSpec ) {
 388                 /* acquire connection lock */
 389                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 390                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
 391                         rs->sr_text = "invalid transaction identifier";
 392                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
 393                         goto txnReturn;
 394                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
 395                         settle=1;
 396                         goto txnReturn;
 397                 }
 398
 399                 if( op->o_conn->c_txn_backend == NULL ) {
 400                         op->o_conn->c_txn_backend = op->o_bd;
 401
 402                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
 403                         rs->sr_text = "transaction cannot span multiple database contexts";
 404                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
 405                         goto txnReturn;
 406                 }
 407
 408                 /* insert operation into transaction */
 409
 410                 rs->sr_text = "transaction specified";
 411                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
 412
 413 txnReturn:
 414                 /* release connection lock */
 415                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 416
 417                 if( !settle ) {
 418                         send_ldap_result( op, rs );
 419                         return rs->sr_err;
 420                 }
 421         }
 422 #endif
 423
 424         ctrls[num_ctrls] = NULL;
 425
 426         slap_mods_opattrs( op, &op->orm_modlist, 1 );
 427
 428         if( 0 ) {
 429 retry:  /* transaction retry */
 430                 if ( dummy.e_attrs ) {
 431                         attrs_free( dummy.e_attrs );
 432                         dummy.e_attrs = NULL;
 433                 }
 434                 if( e != NULL ) {
 435                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 436                         e = NULL;
 437                 }
 438                 Debug(LDAP_DEBUG_TRACE,
 439                         LDAP_XSTRING(bdb_modify) ": retrying...\n", 0, 0, 0);
 440
 441                 rs->sr_err = TXN_ABORT( ltid );
 442                 ltid = NULL;
 443                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 444                 opinfo.boi_oe.oe_key = NULL;
 445                 op->o_do_not_cache = opinfo.boi_acl_cache;
 446                 if( rs->sr_err != 0 ) {
 447                         rs->sr_err = LDAP_OTHER;
 448                         rs->sr_text = "internal error";
 449                         goto return_results;
 450                 }
 451                 if ( op->o_abandon ) {
 452                         rs->sr_err = SLAPD_ABANDON;
 453                         goto return_results;
 454                 }
 455                 bdb_trans_backoff( ++num_retries );
 456         }
 457
 458         /* begin transaction */
 459         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 460                 bdb->bi_db_opflags );
 461         rs->sr_text = NULL;
 462         if( rs->sr_err != 0 ) {
 463                 Debug( LDAP_DEBUG_TRACE,
 464                         LDAP_XSTRING(bdb_modify) ": txn_begin failed: "
 465                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 466                 rs->sr_err = LDAP_OTHER;
 467                 rs->sr_text = "internal error";
 468                 goto return_results;
 469         }
 470
 471         opinfo.boi_oe.oe_key = bdb;
 472         opinfo.boi_txn = ltid;
 473         opinfo.boi_err = 0;
 474         opinfo.boi_acl_cache = op->o_do_not_cache;
 475         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 476
 477         /* get entry or ancestor */
 478         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 479                 &lock );
 480
 481         if ( rs->sr_err != 0 ) {
 482                 Debug( LDAP_DEBUG_TRACE,
 483                         LDAP_XSTRING(bdb_modify) ": dn2entry failed (%d)\n",
 484                         rs->sr_err, 0, 0 );
 485                 switch( rs->sr_err ) {
 486                 case DB_LOCK_DEADLOCK:
 487                 case DB_LOCK_NOTGRANTED:
 488                         goto retry;
 489                 case DB_NOTFOUND:
 490                         if ( BER_BVISEMPTY( &op->o_req_ndn )) {
 491                                 struct berval gluebv = BER_BVC("glue");
 492                                 e = ch_calloc( 1, sizeof(Entry));
 493                                 e->e_name.bv_val = ch_strdup( "" );
 494                                 ber_dupbv( &e->e_nname, &e->e_name );
 495                                 attr_merge_one( e, slap_schema.si_ad_objectClass,
 496                                         &gluebv, NULL );
 497                                 attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
 498                                         &gluebv, NULL );
 499                                 e->e_private = ei;
 500                                 fakeroot = 1;
 501                                 rs->sr_err = 0;
 502                         }
 503                         break;
 504                 case LDAP_BUSY:
 505                         rs->sr_text = "ldap server busy";
 506                         goto return_results;
 507                 default:
 508                         rs->sr_err = LDAP_OTHER;
 509                         rs->sr_text = "internal error";
 510                         goto return_results;
 511                 }
 512         }
 513
 514         if ( !fakeroot ) {
 515                 e = ei->bei_e;
 516         }
 517
 518         /* acquire and lock entry */
 519         /* FIXME: dn2entry() should return non-glue entry */
 520         if (( rs->sr_err == DB_NOTFOUND ) ||
 521                 ( !manageDSAit && e && is_entry_glue( e )))
 522         {
 523                 if ( e != NULL ) {
 524                         rs->sr_matched = ch_strdup( e->e_dn );
 525                         rs->sr_ref = is_entry_referral( e )
 526                                 ? get_entry_referrals( op, e )
 527                                 : NULL;
 528                         bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
 529                         e = NULL;
 530
 531                 } else {
 532                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 533                                 &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 534                 }
 535
 536                 rs->sr_err = LDAP_REFERRAL;
 537                 send_ldap_result( op, rs );
 538
 539                 if ( rs->sr_ref != default_referral ) {
 540                         ber_bvarray_free( rs->sr_ref );
 541                 }
 542                 free( (char *)rs->sr_matched );
 543                 rs->sr_ref = NULL;
 544                 rs->sr_matched = NULL;
 545
 546                 goto done;
 547         }
 548
 549         if ( !manageDSAit && is_entry_referral( e ) ) {
 550                 /* entry is a referral, don't allow modify */
 551                 rs->sr_ref = get_entry_referrals( op, e );
 552
 553                 Debug( LDAP_DEBUG_TRACE,
 554                         LDAP_XSTRING(bdb_modify) ": entry is referral\n",
 555                         0, 0, 0 );
 556
 557                 rs->sr_err = LDAP_REFERRAL;
 558                 rs->sr_matched = e->e_name.bv_val;
 559                 send_ldap_result( op, rs );
 560
 561                 ber_bvarray_free( rs->sr_ref );
 562                 rs->sr_ref = NULL;
 563                 rs->sr_matched = NULL;
 564                 goto done;
 565         }
 566
 567         if ( get_assert( op ) &&
 568                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 569         {
 570                 rs->sr_err = LDAP_ASSERTION_FAILED;
 571                 goto return_results;
 572         }
 573
 574         if( op->o_preread ) {
 575                 if( preread_ctrl == NULL ) {
 576                         preread_ctrl = &ctrls[num_ctrls++];
 577                         ctrls[num_ctrls] = NULL;
 578                 }
 579                 if ( slap_read_controls( op, rs, e,
 580                         &slap_pre_read_bv, preread_ctrl ) )
 581                 {
 582                         Debug( LDAP_DEBUG_TRACE,
 583                                 "<=- " LDAP_XSTRING(bdb_modify) ": pre-read "
 584                                 "failed!\n", 0, 0, 0 );
 585                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 586                                 /* FIXME: is it correct to abort
 587                                  * operation if control fails? */
 588                                 goto return_results;
 589                         }
 590                 }
 591         }
 592
 593         /* nested transaction */
 594         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, bdb->bi_db_opflags );
 595         rs->sr_text = NULL;
 596         if( rs->sr_err != 0 ) {
 597                 Debug( LDAP_DEBUG_TRACE,
 598                         LDAP_XSTRING(bdb_modify) ": txn_begin(2) failed: " "%s (%d)\n",
 599                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 600                 rs->sr_err = LDAP_OTHER;
 601                 rs->sr_text = "internal error";
 602                 goto return_results;
 603         }
 604         /* Modify the entry */
 605         dummy = *e;
 606         rs->sr_err = bdb_modify_internal( op, lt2, op->orm_modlist,
 607                 &dummy, &rs->sr_text, textbuf, textlen );
 608
 609         if( rs->sr_err != LDAP_SUCCESS ) {
 610                 Debug( LDAP_DEBUG_TRACE,
 611                         LDAP_XSTRING(bdb_modify) ": modify failed (%d)\n",
 612                         rs->sr_err, 0, 0 );
 613                 if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
 614                         rs->sr_err = opinfo.boi_err;
 615                 }
 616                 /* Only free attrs if they were dup'd.  */
 617                 if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 618                 switch( rs->sr_err ) {
 619                 case DB_LOCK_DEADLOCK:
 620                 case DB_LOCK_NOTGRANTED:
 621                         goto retry;
 622                 }
 623                 goto return_results;
 624         }
 625
 626         /* change the entry itself */
 627         rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
 628         if ( rs->sr_err != 0 ) {
 629                 Debug( LDAP_DEBUG_TRACE,
 630                         LDAP_XSTRING(bdb_modify) ": id2entry update failed " "(%d)\n",
 631                         rs->sr_err, 0, 0 );
 632                 switch( rs->sr_err ) {
 633                 case DB_LOCK_DEADLOCK:
 634                 case DB_LOCK_NOTGRANTED:
 635                         goto retry;
 636                 }
 637                 rs->sr_text = "entry update failed";
 638                 goto return_results;
 639         }
 640
 641         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 642                 rs->sr_err = LDAP_OTHER;
 643                 rs->sr_text = "txn_commit(2) failed";
 644                 goto return_results;
 645         }
 646
 647         if( op->o_postread ) {
 648                 if( postread_ctrl == NULL ) {
 649                         postread_ctrl = &ctrls[num_ctrls++];
 650                         ctrls[num_ctrls] = NULL;
 651                 }
 652                 if( slap_read_controls( op, rs, &dummy,
 653                         &slap_post_read_bv, postread_ctrl ) )
 654                 {
 655                         Debug( LDAP_DEBUG_TRACE,
 656                                 "<=- " LDAP_XSTRING(bdb_modify)
 657                                 ": post-read failed!\n", 0, 0, 0 );
 658                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 659                                 /* FIXME: is it correct to abort
 660                                  * operation if control fails? */
 661                                 goto return_results;
 662                         }
 663                 }
 664         }
 665
 666         if( op->o_noop ) {
 667                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 668                         rs->sr_text = "txn_abort (no-op) failed";
 669                 } else {
 670                         rs->sr_err = LDAP_X_NO_OPERATION;
 671                         ltid = NULL;
 672                         /* Only free attrs if they were dup'd.  */
 673                         if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 674                         goto return_results;
 675                 }
 676         } else {
 677                 /* may have changed in bdb_modify_internal() */
 678                 e->e_ocflags = dummy.e_ocflags;
 679                 if ( fakeroot ) {
 680                         e->e_private = NULL;
 681                         entry_free( e );
 682                         e = NULL;
 683                         attrs_free( dummy.e_attrs );
 684
 685                 } else {
 686                         rc = bdb_cache_modify( bdb, e, dummy.e_attrs, ltid, &lock );
 687                         switch( rc ) {
 688                         case DB_LOCK_DEADLOCK:
 689                         case DB_LOCK_NOTGRANTED:
 690                                 goto retry;
 691                         }
 692                 }
 693                 dummy.e_attrs = NULL;
 694
 695                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 696         }
 697         ltid = NULL;
 698         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 699         opinfo.boi_oe.oe_key = NULL;
 700
 701         if( rs->sr_err != 0 ) {
 702                 Debug( LDAP_DEBUG_TRACE,
 703                         LDAP_XSTRING(bdb_modify) ": txn_%s failed: %s (%d)\n",
 704                         op->o_noop ? "abort (no-op)" : "commit",
 705                         db_strerror(rs->sr_err), rs->sr_err );
 706                 rs->sr_err = LDAP_OTHER;
 707                 rs->sr_text = "commit failed";
 708
 709                 goto return_results;
 710         }
 711
 712         Debug( LDAP_DEBUG_TRACE,
 713                 LDAP_XSTRING(bdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
 714                 op->o_noop ? " (no-op)" : "",
 715                 dummy.e_id, op->o_req_dn.bv_val );
 716
 717         rs->sr_err = LDAP_SUCCESS;
 718         rs->sr_text = NULL;
 719         if( num_ctrls ) rs->sr_ctrls = ctrls;
 720
 721 return_results:
 722         if( dummy.e_attrs ) {
 723                 attrs_free( dummy.e_attrs );
 724         }
 725         send_ldap_result( op, rs );
 726
 727         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
 728                 TXN_CHECKPOINT( bdb->bi_dbenv,
 729                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 730         }
 731
 732 done:
 733         slap_graduate_commit_csn( op );
 734
 735         if( ltid != NULL ) {
 736                 TXN_ABORT( ltid );
 737         }
 738         if ( opinfo.boi_oe.oe_key ) {
 739                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 740         }
 741
 742         if( e != NULL ) {
 743                 bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
 744         }
 745
 746         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 747                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 748                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 749         }
 750         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 751                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 752                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 753         }
 754
 755         rs->sr_text = NULL;
 756
 757         return rs->sr_err;
 758 }