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

   1 /* modrdn.c - bdb backend modrdn routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2007 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
  22 #include "back-bdb.h"
  23
  24 int
  25 bdb_modrdn( Operation   *op, SlapReply *rs )
  26 {
  27         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  28         AttributeDescription *children = slap_schema.si_ad_children;
  29         AttributeDescription *entry = slap_schema.si_ad_entry;
  30         struct berval   p_dn, p_ndn;
  31         struct berval   new_dn = {0, NULL}, new_ndn = {0, NULL};
  32         Entry           *e = NULL;
  33         Entry           *p = NULL;
  34         EntryInfo       *ei = NULL, *eip = NULL, *nei = NULL, *neip = NULL;
  35         /* LDAP v2 supporting correct attribute handling. */
  36         char textbuf[SLAP_TEXT_BUFLEN];
  37         size_t textlen = sizeof textbuf;
  38         DB_TXN          *ltid = NULL, *lt2;
  39         struct bdb_op_info opinfo = {0};
  40         Entry dummy = {0};
  41
  42         Entry           *np = NULL;                     /* newSuperior Entry */
  43         struct berval   *np_dn = NULL;                  /* newSuperior dn */
  44         struct berval   *np_ndn = NULL;                 /* newSuperior ndn */
  45         struct berval   *new_parent_dn = NULL;  /* np_dn, p_dn, or NULL */
  46
  47         int             manageDSAit = get_manageDSAit( op );
  48
  49         BDB_LOCKER      locker = 0;
  50         DB_LOCK         lock, plock, nplock;
  51
  52         int             num_retries = 0;
  53
  54         LDAPControl **preread_ctrl = NULL;
  55         LDAPControl **postread_ctrl = NULL;
  56         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  57         int num_ctrls = 0;
  58
  59         int     rc;
  60
  61         int parent_is_glue = 0;
  62         int parent_is_leaf = 0;
  63
  64 #ifdef LDAP_X_TXN
  65         int settle = 0;
  66 #endif
  67
  68         Debug( LDAP_DEBUG_TRACE, "==>" LDAP_XSTRING(bdb_modrdn) "(%s,%s,%s)\n",
  69                 op->o_req_dn.bv_val,op->oq_modrdn.rs_newrdn.bv_val,
  70                 op->oq_modrdn.rs_newSup ? op->oq_modrdn.rs_newSup->bv_val : "NULL" );
  71
  72 #ifdef LDAP_X_TXN
  73         if( op->o_txnSpec ) {
  74                 /* acquire connection lock */
  75                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  76                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
  77                         rs->sr_text = "invalid transaction identifier";
  78                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
  79                         goto txnReturn;
  80                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
  81                         settle=1;
  82                         goto txnReturn;
  83                 }
  84
  85                 if( op->o_conn->c_txn_backend == NULL ) {
  86                         op->o_conn->c_txn_backend = op->o_bd;
  87
  88                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
  89                         rs->sr_text = "transaction cannot span multiple database contexts";
  90                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
  91                         goto txnReturn;
  92                 }
  93
  94                 /* insert operation into transaction */
  95
  96                 rs->sr_text = "transaction specified";
  97                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
  98
  99 txnReturn:
 100                 /* release connection lock */
 101                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 102
 103                 if( !settle ) {
 104                         send_ldap_result( op, rs );
 105                         return rs->sr_err;
 106                 }
 107         }
 108 #endif
 109
 110         ctrls[num_ctrls] = NULL;
 111
 112         slap_mods_opattrs( op, &op->orr_modlist, 1 );
 113
 114         if( 0 ) {
 115 retry:  /* transaction retry */
 116                 if ( dummy.e_attrs ) {
 117                         attrs_free( dummy.e_attrs );
 118                         dummy.e_attrs = NULL;
 119                 }
 120                 if (e != NULL) {
 121                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 122                         e = NULL;
 123                 }
 124                 if (p != NULL) {
 125                         bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
 126                         p = NULL;
 127                 }
 128                 if (np != NULL) {
 129                         bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, np);
 130                         np = NULL;
 131                 }
 132                 Debug( LDAP_DEBUG_TRACE, "==>" LDAP_XSTRING(bdb_modrdn)
 133                                 ": retrying...\n", 0, 0, 0 );
 134
 135                 rs->sr_err = TXN_ABORT( ltid );
 136                 ltid = NULL;
 137                 op->o_private = NULL;
 138                 op->o_do_not_cache = opinfo.boi_acl_cache;
 139                 if( rs->sr_err != 0 ) {
 140                         rs->sr_err = LDAP_OTHER;
 141                         rs->sr_text = "internal error";
 142                         goto return_results;
 143                 }
 144                 if ( op->o_abandon ) {
 145                         rs->sr_err = SLAPD_ABANDON;
 146                         goto return_results;
 147                 }
 148                 parent_is_glue = 0;
 149                 parent_is_leaf = 0;
 150                 bdb_trans_backoff( ++num_retries );
 151         }
 152
 153         /* begin transaction */
 154         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 155                 bdb->bi_db_opflags );
 156         rs->sr_text = NULL;
 157         if( rs->sr_err != 0 ) {
 158                 Debug( LDAP_DEBUG_TRACE,
 159                         LDAP_XSTRING(bdb_modrdn) ": txn_begin failed: "
 160                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 161                 rs->sr_err = LDAP_OTHER;
 162                 rs->sr_text = "internal error";
 163                 goto return_results;
 164         }
 165
 166         locker = TXN_ID ( ltid );
 167
 168         opinfo.boi_bdb = op->o_bd;
 169         opinfo.boi_txn = ltid;
 170         opinfo.boi_err = 0;
 171         opinfo.boi_acl_cache = op->o_do_not_cache;
 172         op->o_private = &opinfo;
 173
 174         /* get entry */
 175         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 176                 locker, &lock );
 177
 178         switch( rs->sr_err ) {
 179         case 0:
 180         case DB_NOTFOUND:
 181                 break;
 182         case DB_LOCK_DEADLOCK:
 183         case DB_LOCK_NOTGRANTED:
 184                 goto retry;
 185         case LDAP_BUSY:
 186                 rs->sr_text = "ldap server busy";
 187                 goto return_results;
 188         default:
 189                 rs->sr_err = LDAP_OTHER;
 190                 rs->sr_text = "internal error";
 191                 goto return_results;
 192         }
 193
 194         e = ei->bei_e;
 195         /* FIXME: dn2entry() should return non-glue entry */
 196         if (( rs->sr_err == DB_NOTFOUND ) ||
 197                 ( !manageDSAit && e && is_entry_glue( e )))
 198         {
 199                 if( e != NULL ) {
 200                         rs->sr_matched = ch_strdup( e->e_dn );
 201                         rs->sr_ref = is_entry_referral( e )
 202                                 ? get_entry_referrals( op, e )
 203                                 : NULL;
 204                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, e);
 205                         e = NULL;
 206
 207                 } else {
 208                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 209                                         &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 210                 }
 211
 212                 rs->sr_err = LDAP_REFERRAL;
 213                 send_ldap_result( op, rs );
 214
 215                 ber_bvarray_free( rs->sr_ref );
 216                 free( (char *)rs->sr_matched );
 217                 rs->sr_ref = NULL;
 218                 rs->sr_matched = NULL;
 219
 220                 goto done;
 221         }
 222
 223         if ( get_assert( op ) &&
 224                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 225         {
 226                 rs->sr_err = LDAP_ASSERTION_FAILED;
 227                 goto return_results;
 228         }
 229
 230         /* check write on old entry */
 231         rs->sr_err = access_allowed( op, e, entry, NULL, ACL_WRITE, NULL );
 232         if ( ! rs->sr_err ) {
 233                 switch( opinfo.boi_err ) {
 234                 case DB_LOCK_DEADLOCK:
 235                 case DB_LOCK_NOTGRANTED:
 236                         goto retry;
 237                 }
 238
 239                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
 240                         0, 0 );
 241                 rs->sr_text = "no write access to old entry";
 242                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 243                 goto return_results;
 244         }
 245
 246 #ifndef BDB_HIER
 247         rs->sr_err = bdb_cache_children( op, ltid, e );
 248         if ( rs->sr_err != DB_NOTFOUND ) {
 249                 switch( rs->sr_err ) {
 250                 case DB_LOCK_DEADLOCK:
 251                 case DB_LOCK_NOTGRANTED:
 252                         goto retry;
 253                 case 0:
 254                         Debug(LDAP_DEBUG_ARGS,
 255                                 "<=- " LDAP_XSTRING(bdb_modrdn)
 256                                 ": non-leaf %s\n",
 257                                 op->o_req_dn.bv_val, 0, 0);
 258                         rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
 259                         rs->sr_text = "subtree rename not supported";
 260                         break;
 261                 default:
 262                         Debug(LDAP_DEBUG_ARGS,
 263                                 "<=- " LDAP_XSTRING(bdb_modrdn)
 264                                 ": has_children failed: %s (%d)\n",
 265                                 db_strerror(rs->sr_err), rs->sr_err, 0 );
 266                         rs->sr_err = LDAP_OTHER;
 267                         rs->sr_text = "internal error";
 268                 }
 269                 goto return_results;
 270         }
 271         ei->bei_state |= CACHE_ENTRY_NO_KIDS;
 272 #endif
 273
 274         if (!manageDSAit && is_entry_referral( e ) ) {
 275                 /* parent is a referral, don't allow add */
 276                 rs->sr_ref = get_entry_referrals( op, e );
 277
 278                 Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modrdn)
 279                         ": entry %s is referral\n", e->e_dn, 0, 0 );
 280
 281                 rs->sr_err = LDAP_REFERRAL,
 282                 rs->sr_matched = e->e_name.bv_val;
 283                 send_ldap_result( op, rs );
 284
 285                 ber_bvarray_free( rs->sr_ref );
 286                 rs->sr_ref = NULL;
 287                 rs->sr_matched = NULL;
 288                 goto done;
 289         }
 290
 291         if ( be_issuffix( op->o_bd, &e->e_nname ) ) {
 292 #ifdef BDB_MULTIPLE_SUFFIXES
 293                 /* Allow renaming one suffix entry to another */
 294                 p_ndn = slap_empty_bv;
 295 #else
 296                 /* There can only be one suffix entry */
 297                 rs->sr_err = LDAP_NAMING_VIOLATION;
 298                 rs->sr_text = "cannot rename suffix entry";
 299                 goto return_results;
 300 #endif
 301         } else {
 302                 dnParent( &e->e_nname, &p_ndn );
 303         }
 304         np_ndn = &p_ndn;
 305         eip = ei->bei_parent;
 306         if ( eip && eip->bei_id ) {
 307                 /* Make sure parent entry exist and we can write its
 308                  * children.
 309                  */
 310                 rs->sr_err = bdb_cache_find_id( op, ltid,
 311                         eip->bei_id, &eip, 0, locker, &plock );
 312
 313                 switch( rs->sr_err ) {
 314                 case 0:
 315                 case DB_NOTFOUND:
 316                         break;
 317                 case DB_LOCK_DEADLOCK:
 318                 case DB_LOCK_NOTGRANTED:
 319                         goto retry;
 320                 case LDAP_BUSY:
 321                         rs->sr_text = "ldap server busy";
 322                         goto return_results;
 323                 default:
 324                         rs->sr_err = LDAP_OTHER;
 325                         rs->sr_text = "internal error";
 326                         goto return_results;
 327                 }
 328
 329                 p = eip->bei_e;
 330                 if( p == NULL) {
 331                         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modrdn)
 332                                 ": parent does not exist\n", 0, 0, 0);
 333                         rs->sr_err = LDAP_OTHER;
 334                         rs->sr_text = "old entry's parent does not exist";
 335                         goto return_results;
 336                 }
 337         } else {
 338                 p = (Entry *)&slap_entry_root;
 339         }
 340
 341         /* check parent for "children" acl */
 342         rs->sr_err = access_allowed( op, p,
 343                 children, NULL,
 344                 op->oq_modrdn.rs_newSup == NULL ?
 345                         ACL_WRITE : ACL_WDEL,
 346                 NULL );
 347
 348         if ( !p_ndn.bv_len )
 349                 p = NULL;
 350
 351         if ( ! rs->sr_err ) {
 352                 switch( opinfo.boi_err ) {
 353                 case DB_LOCK_DEADLOCK:
 354                 case DB_LOCK_NOTGRANTED:
 355                         goto retry;
 356                 }
 357
 358                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 359                 Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 360                         0, 0 );
 361                 rs->sr_text = "no write access to old parent's children";
 362                 goto return_results;
 363         }
 364
 365         Debug( LDAP_DEBUG_TRACE,
 366                 LDAP_XSTRING(bdb_modrdn) ": wr to children "
 367                 "of entry %s OK\n", p_ndn.bv_val, 0, 0 );
 368
 369         if ( p_ndn.bv_val == slap_empty_bv.bv_val ) {
 370                 p_dn = slap_empty_bv;
 371         } else {
 372                 dnParent( &e->e_name, &p_dn );
 373         }
 374
 375         Debug( LDAP_DEBUG_TRACE,
 376                 LDAP_XSTRING(bdb_modrdn) ": parent dn=%s\n",
 377                 p_dn.bv_val, 0, 0 );
 378
 379         new_parent_dn = &p_dn;  /* New Parent unless newSuperior given */
 380
 381         if ( op->oq_modrdn.rs_newSup != NULL ) {
 382                 Debug( LDAP_DEBUG_TRACE,
 383                         LDAP_XSTRING(bdb_modrdn)
 384                         ": new parent \"%s\" requested...\n",
 385                         op->oq_modrdn.rs_newSup->bv_val, 0, 0 );
 386
 387                 /*  newSuperior == oldParent? */
 388                 if( dn_match( &p_ndn, op->oq_modrdn.rs_nnewSup ) ) {
 389                         Debug( LDAP_DEBUG_TRACE, "bdb_back_modrdn: "
 390                                 "new parent \"%s\" same as the old parent \"%s\"\n",
 391                                 op->oq_modrdn.rs_newSup->bv_val, p_dn.bv_val, 0 );
 392                         op->oq_modrdn.rs_newSup = NULL; /* ignore newSuperior */
 393                 }
 394         }
 395
 396         /* There's a BDB_MULTIPLE_SUFFIXES case here that this code doesn't
 397          * support. E.g., two suffixes dc=foo,dc=com and dc=bar,dc=net.
 398          * We do not allow modDN
 399          *   dc=foo,dc=com
 400          *    newrdn dc=bar
 401          *    newsup dc=net
 402          * and we probably should. But since MULTIPLE_SUFFIXES is deprecated
 403          * I'm ignoring this problem for now.
 404          */
 405         if ( op->oq_modrdn.rs_newSup != NULL ) {
 406                 if ( op->oq_modrdn.rs_newSup->bv_len ) {
 407                         np_dn = op->oq_modrdn.rs_newSup;
 408                         np_ndn = op->oq_modrdn.rs_nnewSup;
 409
 410                         /* newSuperior == oldParent? - checked above */
 411                         /* newSuperior == entry being moved?, if so ==> ERROR */
 412                         if ( dnIsSuffix( np_ndn, &e->e_nname )) {
 413                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 414                                 rs->sr_text = "new superior not found";
 415                                 goto return_results;
 416                         }
 417                         /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 418
 419                         rs->sr_err = bdb_dn2entry( op, ltid, np_ndn,
 420                                 &neip, 0, locker, &nplock );
 421
 422                         switch( rs->sr_err ) {
 423                         case 0: np = neip->bei_e;
 424                         case DB_NOTFOUND:
 425                                 break;
 426                         case DB_LOCK_DEADLOCK:
 427                         case DB_LOCK_NOTGRANTED:
 428                                 goto retry;
 429                         case LDAP_BUSY:
 430                                 rs->sr_text = "ldap server busy";
 431                                 goto return_results;
 432                         default:
 433                                 rs->sr_err = LDAP_OTHER;
 434                                 rs->sr_text = "internal error";
 435                                 goto return_results;
 436                         }
 437
 438                         if( np == NULL) {
 439                                 Debug( LDAP_DEBUG_TRACE,
 440                                         LDAP_XSTRING(bdb_modrdn)
 441                                         ": newSup(ndn=%s) not here!\n",
 442                                         np_ndn->bv_val, 0, 0);
 443                                 rs->sr_text = "new superior not found";
 444                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 445                                 goto return_results;
 446                         }
 447
 448                         Debug( LDAP_DEBUG_TRACE,
 449                                 LDAP_XSTRING(bdb_modrdn)
 450                                 ": wr to new parent OK np=%p, id=%ld\n",
 451                                 (void *) np, (long) np->e_id, 0 );
 452
 453                         /* check newSuperior for "children" acl */
 454                         rs->sr_err = access_allowed( op, np, children,
 455                                 NULL, ACL_WADD, NULL );
 456
 457                         if( ! rs->sr_err ) {
 458                                 switch( opinfo.boi_err ) {
 459                                 case DB_LOCK_DEADLOCK:
 460                                 case DB_LOCK_NOTGRANTED:
 461                                         goto retry;
 462                                 }
 463
 464                                 Debug( LDAP_DEBUG_TRACE,
 465                                         LDAP_XSTRING(bdb_modrdn)
 466                                         ": no wr to newSup children\n",
 467                                         0, 0, 0 );
 468                                 rs->sr_text = "no write access to new superior's children";
 469                                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 470                                 goto return_results;
 471                         }
 472
 473                         if ( is_entry_alias( np ) ) {
 474                                 /* parent is an alias, don't allow add */
 475                                 Debug( LDAP_DEBUG_TRACE,
 476                                         LDAP_XSTRING(bdb_modrdn)
 477                                         ": entry is alias\n",
 478                                         0, 0, 0 );
 479                                 rs->sr_text = "new superior is an alias";
 480                                 rs->sr_err = LDAP_ALIAS_PROBLEM;
 481                                 goto return_results;
 482                         }
 483
 484                         if ( is_entry_referral( np ) ) {
 485                                 /* parent is a referral, don't allow add */
 486                                 Debug( LDAP_DEBUG_TRACE,
 487                                         LDAP_XSTRING(bdb_modrdn)
 488                                         ": entry is referral\n",
 489                                         0, 0, 0 );
 490                                 rs->sr_text = "new superior is a referral";
 491                                 rs->sr_err = LDAP_OTHER;
 492                                 goto return_results;
 493                         }
 494
 495                 } else {
 496                         np_dn = NULL;
 497
 498                         /* no parent, modrdn entry directly under root */
 499                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
 500                                 || be_isupdate( op ) ) {
 501                                 np = (Entry *)&slap_entry_root;
 502
 503                                 /* check parent for "children" acl */
 504                                 rs->sr_err = access_allowed( op, np,
 505                                         children, NULL, ACL_WADD, NULL );
 506
 507                                 np = NULL;
 508
 509                                 if ( ! rs->sr_err ) {
 510                                         switch( opinfo.boi_err ) {
 511                                         case DB_LOCK_DEADLOCK:
 512                                         case DB_LOCK_NOTGRANTED:
 513                                                 goto retry;
 514                                         }
 515
 516                                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 517                                         Debug( LDAP_DEBUG_TRACE,
 518                                                 "no access to new superior\n",
 519                                                 0, 0, 0 );
 520                                         rs->sr_text =
 521                                                 "no write access to new superior's children";
 522                                         goto return_results;
 523                                 }
 524                         }
 525                 }
 526
 527                 Debug( LDAP_DEBUG_TRACE,
 528                         LDAP_XSTRING(bdb_modrdn)
 529                         ": wr to new parent's children OK\n",
 530                         0, 0, 0 );
 531
 532                 new_parent_dn = np_dn;
 533         }
 534
 535         /* Build target dn and make sure target entry doesn't exist already. */
 536         if (!new_dn.bv_val) {
 537                 build_new_dn( &new_dn, new_parent_dn, &op->oq_modrdn.rs_newrdn, NULL );
 538         }
 539
 540         if (!new_ndn.bv_val) {
 541                 struct berval bv = {0, NULL};
 542                 dnNormalize( 0, NULL, NULL, &new_dn, &bv, op->o_tmpmemctx );
 543                 ber_dupbv( &new_ndn, &bv );
 544                 /* FIXME: why not call dnNormalize() w/o ctx? */
 545                 op->o_tmpfree( bv.bv_val, op->o_tmpmemctx );
 546         }
 547
 548         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modrdn) ": new ndn=%s\n",
 549                 new_ndn.bv_val, 0, 0 );
 550
 551         /* Shortcut the search */
 552         nei = neip ? neip : eip;
 553         rs->sr_err = bdb_cache_find_ndn ( op, locker, &new_ndn, &nei );
 554         if ( nei ) bdb_cache_entryinfo_unlock( nei );
 555         switch( rs->sr_err ) {
 556         case DB_LOCK_DEADLOCK:
 557         case DB_LOCK_NOTGRANTED:
 558                 goto retry;
 559         case DB_NOTFOUND:
 560                 break;
 561         case 0:
 562                 rs->sr_err = LDAP_ALREADY_EXISTS;
 563                 goto return_results;
 564         default:
 565                 rs->sr_err = LDAP_OTHER;
 566                 rs->sr_text = "internal error";
 567                 goto return_results;
 568         }
 569
 570         assert( op->orr_modlist != NULL );
 571
 572         if( op->o_preread ) {
 573                 if( preread_ctrl == NULL ) {
 574                         preread_ctrl = &ctrls[num_ctrls++];
 575                         ctrls[num_ctrls] = NULL;
 576                 }
 577                 if( slap_read_controls( op, rs, e,
 578                         &slap_pre_read_bv, preread_ctrl ) )
 579                 {
 580                         Debug( LDAP_DEBUG_TRACE,
 581                                 "<=- " LDAP_XSTRING(bdb_modrdn)
 582                                 ": pre-read failed!\n", 0, 0, 0 );
 583                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 584                                 /* FIXME: is it correct to abort
 585                                  * operation if control fails? */
 586                                 goto return_results;
 587                         }
 588                 }
 589         }
 590
 591         /* nested transaction */
 592         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, bdb->bi_db_opflags );
 593         rs->sr_text = NULL;
 594         if( rs->sr_err != 0 ) {
 595                 Debug( LDAP_DEBUG_TRACE,
 596                         LDAP_XSTRING(bdb_modrdn)
 597                         ": txn_begin(2) failed: %s (%d)\n",
 598                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 599                 rs->sr_err = LDAP_OTHER;
 600                 rs->sr_text = "internal error";
 601                 goto return_results;
 602         }
 603
 604         /* delete old DN */
 605         rs->sr_err = bdb_dn2id_delete( op, lt2, eip, e );
 606         if ( rs->sr_err != 0 ) {
 607                 Debug(LDAP_DEBUG_TRACE,
 608                         "<=- " LDAP_XSTRING(bdb_modrdn)
 609                         ": dn2id del failed: %s (%d)\n",
 610                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 611                 switch( rs->sr_err ) {
 612                 case DB_LOCK_DEADLOCK:
 613                 case DB_LOCK_NOTGRANTED:
 614                         goto retry;
 615                 }
 616                 rs->sr_err = LDAP_OTHER;
 617                 rs->sr_text = "DN index delete fail";
 618                 goto return_results;
 619         }
 620
 621         /* copy the entry, then override some fields */
 622         dummy = *e;
 623         dummy.e_name = new_dn;
 624         dummy.e_nname = new_ndn;
 625         dummy.e_attrs = NULL;
 626
 627         /* add new DN */
 628         rs->sr_err = bdb_dn2id_add( op, lt2, neip ? neip : eip, &dummy );
 629         if ( rs->sr_err != 0 ) {
 630                 Debug(LDAP_DEBUG_TRACE,
 631                         "<=- " LDAP_XSTRING(bdb_modrdn)
 632                         ": dn2id add failed: %s (%d)\n",
 633                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 634                 switch( rs->sr_err ) {
 635                 case DB_LOCK_DEADLOCK:
 636                 case DB_LOCK_NOTGRANTED:
 637                         goto retry;
 638                 }
 639                 rs->sr_err = LDAP_OTHER;
 640                 rs->sr_text = "DN index add failed";
 641                 goto return_results;
 642         }
 643
 644         dummy.e_attrs = e->e_attrs;
 645
 646         /* modify entry */
 647         rs->sr_err = bdb_modify_internal( op, lt2, op->orr_modlist, &dummy,
 648                 &rs->sr_text, textbuf, textlen );
 649         if( rs->sr_err != LDAP_SUCCESS ) {
 650                 Debug(LDAP_DEBUG_TRACE,
 651                         "<=- " LDAP_XSTRING(bdb_modrdn)
 652                         ": modify failed: %s (%d)\n",
 653                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 654                 if ( ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) && opinfo.boi_err ) {
 655                         rs->sr_err = opinfo.boi_err;
 656                 }
 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         /* id2entry index */
 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_modrdn)
 671                         ": id2entry failed: %s (%d)\n",
 672                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 673                 switch( rs->sr_err ) {
 674                 case DB_LOCK_DEADLOCK:
 675                 case DB_LOCK_NOTGRANTED:
 676                         goto retry;
 677                 }
 678                 rs->sr_err = LDAP_OTHER;
 679                 rs->sr_text = "entry update failed";
 680                 goto return_results;
 681         }
 682
 683         if ( p_ndn.bv_len != 0 ) {
 684                 parent_is_glue = is_entry_glue(p);
 685                 rs->sr_err = bdb_cache_children( op, lt2, p );
 686                 if ( rs->sr_err != DB_NOTFOUND ) {
 687                         switch( rs->sr_err ) {
 688                         case DB_LOCK_DEADLOCK:
 689                         case DB_LOCK_NOTGRANTED:
 690                                 goto retry;
 691                         case 0:
 692                                 break;
 693                         default:
 694                                 Debug(LDAP_DEBUG_ARGS,
 695                                         "<=- " LDAP_XSTRING(bdb_modrdn)
 696                                         ": has_children failed: %s (%d)\n",
 697                                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 698                                 rs->sr_err = LDAP_OTHER;
 699                                 rs->sr_text = "internal error";
 700                                 goto return_results;
 701                         }
 702                         parent_is_leaf = 1;
 703                 }
 704                 bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
 705                 p = NULL;
 706         }
 707
 708         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 709                 rs->sr_err = LDAP_OTHER;
 710                 rs->sr_text = "txn_commit(2) failed";
 711                 goto return_results;
 712         }
 713
 714         if( op->o_postread ) {
 715                 if( postread_ctrl == NULL ) {
 716                         postread_ctrl = &ctrls[num_ctrls++];
 717                         ctrls[num_ctrls] = NULL;
 718                 }
 719                 if( slap_read_controls( op, rs, &dummy,
 720                         &slap_post_read_bv, postread_ctrl ) )
 721                 {
 722                         Debug( LDAP_DEBUG_TRACE,
 723                                 "<=- " LDAP_XSTRING(bdb_modrdn)
 724                                 ": post-read failed!\n", 0, 0, 0 );
 725                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 726                                 /* FIXME: is it correct to abort
 727                                  * operation if control fails? */
 728                                 goto return_results;
 729                         }
 730                 }
 731         }
 732
 733         if( op->o_noop ) {
 734                 if(( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 735                         rs->sr_text = "txn_abort (no-op) failed";
 736                 } else {
 737                         rs->sr_err = LDAP_X_NO_OPERATION;
 738                         ltid = NULL;
 739                         goto return_results;
 740                 }
 741
 742         } else {
 743                 rc = bdb_cache_modrdn( bdb, e, &op->orr_nnewrdn, &dummy, neip,
 744                         locker, &lock );
 745                 switch( rc ) {
 746                 case DB_LOCK_DEADLOCK:
 747                 case DB_LOCK_NOTGRANTED:
 748                         goto retry;
 749                 }
 750                 dummy.e_attrs = NULL;
 751                 new_dn.bv_val = NULL;
 752                 new_ndn.bv_val = NULL;
 753
 754                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 755                         rs->sr_text = "txn_commit failed";
 756                 } else {
 757                         rs->sr_err = LDAP_SUCCESS;
 758                 }
 759         }
 760
 761         ltid = NULL;
 762         op->o_private = NULL;
 763
 764         if( rs->sr_err != LDAP_SUCCESS ) {
 765                 Debug( LDAP_DEBUG_TRACE,
 766                         LDAP_XSTRING(bdb_modrdn) ": %s : %s (%d)\n",
 767                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 768                 rs->sr_err = LDAP_OTHER;
 769
 770                 goto return_results;
 771         }
 772
 773         Debug(LDAP_DEBUG_TRACE,
 774                 LDAP_XSTRING(bdb_modrdn)
 775                 ": rdn modified%s id=%08lx dn=\"%s\"\n",
 776                 op->o_noop ? " (no-op)" : "",
 777                 dummy.e_id, op->o_req_dn.bv_val );
 778         rs->sr_text = NULL;
 779         if( num_ctrls ) rs->sr_ctrls = ctrls;
 780
 781 return_results:
 782         if ( dummy.e_attrs ) {
 783                 attrs_free( dummy.e_attrs );
 784         }
 785         send_ldap_result( op, rs );
 786
 787         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
 788                 TXN_CHECKPOINT( bdb->bi_dbenv,
 789                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 790         }
 791
 792         if ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) {
 793                 op->o_delete_glue_parent = 1;
 794         }
 795
 796 done:
 797         slap_graduate_commit_csn( op );
 798
 799         if( new_dn.bv_val != NULL ) free( new_dn.bv_val );
 800         if( new_ndn.bv_val != NULL ) free( new_ndn.bv_val );
 801
 802         /* LDAP v3 Support */
 803         if( np != NULL ) {
 804                 /* free new parent and reader lock */
 805                 bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, np);
 806         }
 807
 808         if( p != NULL ) {
 809                 /* free parent and reader lock */
 810                 bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
 811         }
 812
 813         /* free entry */
 814         if( e != NULL ) {
 815                 bdb_unlocked_cache_return_entry_w( &bdb->bi_cache, e);
 816         }
 817
 818         if( ltid != NULL ) {
 819                 TXN_ABORT( ltid );
 820         }
 821         op->o_private = NULL;
 822
 823         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 824                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 825                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 826         }
 827         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 828                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 829                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 830         }
 831         return rs->sr_err;
 832 }