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

   1 /* delete.c - bdb backend delete routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11 #include <ac/string.h>
  12
  13 #include "back-bdb.h"
  14 #include "external.h"
  15
  16 int
  17 bdb_delete( Operation *op, SlapReply *rs )
  18 {
  19         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  20         Entry   *matched = NULL;
  21         struct berval   pdn = {0, NULL};
  22         Entry   *e = NULL;
  23         Entry   *p = NULL;
  24         EntryInfo       *ei = NULL, *eip = NULL;
  25         int             manageDSAit = get_manageDSAit( op );
  26         AttributeDescription *children = slap_schema.si_ad_children;
  27         AttributeDescription *entry = slap_schema.si_ad_entry;
  28         DB_TXN          *ltid = NULL, *lt2;
  29         struct bdb_op_info opinfo;
  30
  31         u_int32_t       locker = 0;
  32         DB_LOCK         lock, plock;
  33
  34         int             noop = 0;
  35
  36         int             num_retries = 0;
  37
  38         Operation* ps_list;
  39         int     rc;
  40         EntryInfo   *suffix_ei;
  41         Entry       *ctxcsn_e;
  42         int         ctxcsn_added = 0;
  43
  44         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  45         int num_ctrls = 0;
  46
  47 #ifdef NEW_LOGGING
  48         LDAP_LOG ( OPERATION, ARGS,  "==> bdb_delete: %s\n", op->o_req_dn.bv_val, 0, 0 );
  49 #else
  50         Debug( LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n",
  51                 op->o_req_dn.bv_val, 0, 0 );
  52 #endif
  53
  54         if( 0 ) {
  55 retry:  /* transaction retry */
  56                 if( e != NULL ) {
  57                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
  58                         e = NULL;
  59                 }
  60 #ifdef NEW_LOGGING
  61                 LDAP_LOG ( OPERATION, DETAIL1,
  62                         "==> bdb_delete: retrying...\n", 0, 0, 0 );
  63 #else
  64                 Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n",
  65                         0, 0, 0 );
  66 #endif
  67                 rs->sr_err = TXN_ABORT( ltid );
  68                 ltid = NULL;
  69                 op->o_private = NULL;
  70                 op->o_do_not_cache = opinfo.boi_acl_cache;
  71                 if( rs->sr_err != 0 ) {
  72                         rs->sr_err = LDAP_OTHER;
  73                         rs->sr_text = "internal error";
  74                         goto return_results;
  75                 }
  76                 ldap_pvt_thread_yield();
  77                 bdb_trans_backoff( ++num_retries );
  78         }
  79
  80         /* begin transaction */
  81         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
  82                 bdb->bi_db_opflags );
  83         rs->sr_text = NULL;
  84         if( rs->sr_err != 0 ) {
  85 #ifdef NEW_LOGGING
  86                 LDAP_LOG ( OPERATION, ERR,
  87                         "==> bdb_delete: txn_begin failed: %s (%d)\n",
  88                         db_strerror(rs->sr_err), rs->sr_err, 0 );
  89 #else
  90                 Debug( LDAP_DEBUG_TRACE,
  91                         "bdb_delete: txn_begin failed: %s (%d)\n",
  92                         db_strerror(rs->sr_err), rs->sr_err, 0 );
  93 #endif
  94                 rs->sr_err = LDAP_OTHER;
  95                 rs->sr_text = "internal error";
  96                 goto return_results;
  97         }
  98
  99         locker = TXN_ID ( ltid );
 100
 101         opinfo.boi_bdb = op->o_bd;
 102         opinfo.boi_txn = ltid;
 103         opinfo.boi_locker = locker;
 104         opinfo.boi_err = 0;
 105         opinfo.boi_acl_cache = op->o_do_not_cache;
 106         op->o_private = &opinfo;
 107
 108         if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 109                 dnParent( &op->o_req_ndn, &pdn );
 110         }
 111
 112         /* get entry */
 113         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
 114                 locker, &lock );
 115
 116         switch( rs->sr_err ) {
 117         case 0:
 118         case DB_NOTFOUND:
 119                 break;
 120         case DB_LOCK_DEADLOCK:
 121         case DB_LOCK_NOTGRANTED:
 122                 goto retry;
 123         case LDAP_BUSY:
 124                 rs->sr_text = "ldap server busy";
 125                 goto return_results;
 126         default:
 127                 rs->sr_err = LDAP_OTHER;
 128                 rs->sr_text = "internal error";
 129                 goto return_results;
 130         }
 131
 132         if ( rs->sr_err == 0 ) {
 133                 e = ei->bei_e;
 134                 eip = ei->bei_parent;
 135                 bdb_cache_find_id( op, ltid, eip->bei_id, &eip,
 136                         0, locker, &plock );
 137         } else {
 138                 matched = ei->bei_e;
 139         }
 140         if ( eip ) {
 141                 p = eip->bei_e;
 142         }
 143
 144         if ( pdn.bv_len != 0 ) {
 145                 if( p == NULL || !bvmatch( &pdn, &p->e_nname )) {
 146 #ifdef NEW_LOGGING
 147                         LDAP_LOG ( OPERATION, DETAIL1,
 148                                 "<=- bdb_delete: parent does not exist\n", 0, 0, 0 );
 149 #else
 150                         Debug( LDAP_DEBUG_TRACE,
 151                                 "<=- bdb_delete: parent does not exist\n",
 152                                 0, 0, 0);
 153 #endif
 154                         rs->sr_err = LDAP_OTHER;
 155                         rs->sr_text = "could not locate parent of entry";
 156                         goto return_results;
 157                 }
 158
 159                 /* check parent for "children" acl */
 160                 rs->sr_err = access_allowed( op, p,
 161                         children, NULL, ACL_WRITE, NULL );
 162
 163                 bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
 164                 p = NULL;
 165
 166                 if ( !rs->sr_err  ) {
 167                         switch( opinfo.boi_err ) {
 168                         case DB_LOCK_DEADLOCK:
 169                         case DB_LOCK_NOTGRANTED:
 170                                 goto retry;
 171                         }
 172
 173 #ifdef NEW_LOGGING
 174                         LDAP_LOG ( OPERATION, DETAIL1,
 175                                 "<=- bdb_delete: no write access to parent\n", 0, 0, 0 );
 176 #else
 177                         Debug( LDAP_DEBUG_TRACE,
 178                                 "<=- bdb_delete: no write access to parent\n",
 179                                 0, 0, 0 );
 180 #endif
 181                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 182                         rs->sr_text = "no write access to parent";
 183                         goto return_results;
 184                 }
 185
 186         } else {
 187                 /* no parent, must be root to delete */
 188                 if( ! be_isroot( op->o_bd, &op->o_ndn ) ) {
 189                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
 190                                 || be_isupdate( op->o_bd, &op->o_ndn ) ) {
 191                                 p = (Entry *)&slap_entry_root;
 192
 193                                 /* check parent for "children" acl */
 194                                 rs->sr_err = access_allowed( op, p,
 195                                         children, NULL, ACL_WRITE, NULL );
 196
 197                                 p = NULL;
 198
 199                                 if ( !rs->sr_err  ) {
 200                                         switch( opinfo.boi_err ) {
 201                                         case DB_LOCK_DEADLOCK:
 202                                         case DB_LOCK_NOTGRANTED:
 203                                                 goto retry;
 204                                         }
 205
 206 #ifdef NEW_LOGGING
 207                                         LDAP_LOG ( OPERATION, DETAIL1,
 208                                                 "<=- bdb_delete: no access to parent\n", 0, 0, 0 );
 209 #else
 210                                         Debug( LDAP_DEBUG_TRACE,
 211                                                 "<=- bdb_delete: no access "
 212                                                 "to parent\n", 0, 0, 0 );
 213 #endif
 214                                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 215                                         rs->sr_text = "no write access to parent";
 216                                         goto return_results;
 217                                 }
 218
 219                         } else {
 220 #ifdef NEW_LOGGING
 221                                 LDAP_LOG ( OPERATION, DETAIL1,
 222                                         "<=- bdb_delete: no parent and not root\n", 0, 0, 0 );
 223 #else
 224                                 Debug( LDAP_DEBUG_TRACE,
 225                                         "<=- bdb_delete: no parent "
 226                                         "and not root\n", 0, 0, 0);
 227 #endif
 228                                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 229                                 goto return_results;
 230                         }
 231                 }
 232         }
 233
 234         /* FIXME : dn2entry() should return non-glue entry */
 235         if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
 236 #ifdef NEW_LOGGING
 237                 LDAP_LOG ( OPERATION, ARGS,
 238                         "<=- bdb_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0);
 239 #else
 240                 Debug( LDAP_DEBUG_ARGS,
 241                         "<=- bdb_delete: no such object %s\n",
 242                         op->o_req_dn.bv_val, 0, 0);
 243 #endif
 244
 245                 if ( matched != NULL ) {
 246                         rs->sr_matched = ch_strdup( matched->e_dn );
 247                         rs->sr_ref = is_entry_referral( matched )
 248                                 ? get_entry_referrals( op, matched )
 249                                 : NULL;
 250                         bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, matched);
 251                         matched = NULL;
 252
 253                 } else {
 254                         BerVarray deref = op->o_bd->syncinfo ?
 255                                                           op->o_bd->syncinfo->provideruri_bv : default_referral;
 256                         rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 257                 }
 258
 259                 rs->sr_err = LDAP_REFERRAL;
 260                 send_ldap_result( op, rs );
 261
 262                 ber_bvarray_free( rs->sr_ref );
 263                 free( (char *)rs->sr_matched );
 264                 rs->sr_ref = NULL;
 265                 rs->sr_matched = NULL;
 266
 267                 rs->sr_err = -1;
 268                 goto done;
 269         }
 270
 271         if ( get_assert( op ) &&
 272                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 273         {
 274                 rs->sr_err = LDAP_ASSERTION_FAILED;
 275                 goto return_results;
 276         }
 277
 278         rs->sr_err = access_allowed( op, e,
 279                 entry, NULL, ACL_WRITE, NULL );
 280
 281         if ( !rs->sr_err  ) {
 282                 switch( opinfo.boi_err ) {
 283                 case DB_LOCK_DEADLOCK:
 284                 case DB_LOCK_NOTGRANTED:
 285                         goto retry;
 286                 }
 287
 288 #ifdef NEW_LOGGING
 289                 LDAP_LOG ( OPERATION, DETAIL1,
 290                         "<=- bdb_delete: no write access to entry\n", 0, 0, 0 );
 291 #else
 292                 Debug( LDAP_DEBUG_TRACE,
 293                         "<=- bdb_delete: no write access to entry\n",
 294                         0, 0, 0 );
 295 #endif
 296                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 297                 rs->sr_text = "no write access to entry";
 298                 goto return_results;
 299         }
 300
 301         if ( !manageDSAit && is_entry_referral( e ) ) {
 302                 /* entry is a referral, don't allow delete */
 303                 rs->sr_ref = get_entry_referrals( op, e );
 304
 305 #ifdef NEW_LOGGING
 306                 LDAP_LOG ( OPERATION, DETAIL1,
 307                         "<=- bdb_delete: entry is referral\n", 0, 0, 0 );
 308 #else
 309                 Debug( LDAP_DEBUG_TRACE,
 310                         "bdb_delete: entry is referral\n", 0, 0, 0 );
 311 #endif
 312
 313                 rs->sr_err = LDAP_REFERRAL;
 314                 rs->sr_matched = e->e_name.bv_val;
 315                 send_ldap_result( op, rs );
 316
 317                 ber_bvarray_free( rs->sr_ref );
 318                 rs->sr_ref = NULL;
 319                 rs->sr_matched = NULL;
 320
 321                 rs->sr_err = 1;
 322                 goto done;
 323         }
 324
 325         /* pre-read */
 326         if( op->o_preread ) {
 327                 if( slap_read_controls( op, rs, e,
 328                         &slap_pre_read_bv, &ctrls[num_ctrls] ) )
 329                 {
 330 #ifdef NEW_LOGGING
 331                         LDAP_LOG ( OPERATION, DETAIL1,
 332                                 "<=- bdb_delete: pre-read failed!\n", 0, 0, 0 );
 333 #else
 334                         Debug( LDAP_DEBUG_TRACE,
 335                                 "<=- bdb_delete: pre-read failed!\n", 0, 0, 0 );
 336 #endif
 337                         goto return_results;
 338                 }
 339                 ctrls[++num_ctrls] = NULL;
 340         }
 341
 342         /* nested transaction */
 343         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 344                 bdb->bi_db_opflags );
 345         rs->sr_text = NULL;
 346         if( rs->sr_err != 0 ) {
 347 #ifdef NEW_LOGGING
 348                 LDAP_LOG ( OPERATION, ERR,
 349                         "bdb_delete: txn_begin(2) failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 350 #else
 351                 Debug( LDAP_DEBUG_TRACE,
 352                         "bdb_delete: txn_begin(2) failed: %s (%d)\n",
 353                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 354 #endif
 355                 rs->sr_err = LDAP_OTHER;
 356                 rs->sr_text = "internal error";
 357                 goto return_results;
 358         }
 359
 360         /* Can't do it if we have kids */
 361         rs->sr_err = bdb_cache_children( op, lt2, e );
 362         if( rs->sr_err != DB_NOTFOUND ) {
 363                 switch( rs->sr_err ) {
 364                 case DB_LOCK_DEADLOCK:
 365                 case DB_LOCK_NOTGRANTED:
 366                         goto retry;
 367                 case 0:
 368 #ifdef NEW_LOGGING
 369                         LDAP_LOG ( OPERATION, DETAIL1,
 370                                 "<=- bdb_delete: non-leaf %s\n", op->o_req_dn.bv_val, 0, 0 );
 371 #else
 372                         Debug(LDAP_DEBUG_ARGS,
 373                                 "<=- bdb_delete: non-leaf %s\n",
 374                                 op->o_req_dn.bv_val, 0, 0);
 375 #endif
 376                         rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
 377                         rs->sr_text = "subtree delete not supported";
 378                         break;
 379                 default:
 380 #ifdef NEW_LOGGING
 381                         LDAP_LOG ( OPERATION, ERR,
 382                                 "<=- bdb_delete: has_children failed %s (%d)\n",
 383                                 db_strerror(rs->sr_err), rs->sr_err, 0 );
 384 #else
 385                         Debug(LDAP_DEBUG_ARGS,
 386                                 "<=- bdb_delete: has_children failed: %s (%d)\n",
 387                                 db_strerror(rs->sr_err), rs->sr_err, 0 );
 388 #endif
 389                         rs->sr_err = LDAP_OTHER;
 390                         rs->sr_text = "internal error";
 391                 }
 392                 goto return_results;
 393         }
 394
 395         /* delete from dn2id */
 396         rs->sr_err = bdb_dn2id_delete( op, lt2, eip, e );
 397         if ( rs->sr_err != 0 ) {
 398 #ifdef NEW_LOGGING
 399                 LDAP_LOG ( OPERATION, ERR,
 400                         "<=- bdb_delete: dn2id failed: %s (%d)\n",
 401                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 402 #else
 403                 Debug(LDAP_DEBUG_TRACE,
 404                         "<=- bdb_delete: dn2id failed: %s (%d)\n",
 405                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 406 #endif
 407                 switch( rs->sr_err ) {
 408                 case DB_LOCK_DEADLOCK:
 409                 case DB_LOCK_NOTGRANTED:
 410                         goto retry;
 411                 }
 412                 rs->sr_text = "DN index delete failed";
 413                 rs->sr_err = LDAP_OTHER;
 414                 goto return_results;
 415         }
 416
 417         /* delete from id2entry */
 418         rs->sr_err = bdb_id2entry_delete( op->o_bd, lt2, e );
 419         if ( rs->sr_err != 0 ) {
 420 #ifdef NEW_LOGGING
 421                 LDAP_LOG ( OPERATION, ERR,
 422                         "<=- bdb_delete: id2entry failed: %s (%d)\n",
 423                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 424 #else
 425                 Debug(LDAP_DEBUG_TRACE,
 426                         "<=- bdb_delete: id2entry failed: %s (%d)\n",
 427                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 428 #endif
 429                 switch( rs->sr_err ) {
 430                 case DB_LOCK_DEADLOCK:
 431                 case DB_LOCK_NOTGRANTED:
 432                         goto retry;
 433                 }
 434                 rs->sr_text = "entry delete failed";
 435                 rs->sr_err = LDAP_OTHER;
 436                 goto return_results;
 437         }
 438
 439         /* delete indices for old attributes */
 440         rs->sr_err = bdb_index_entry_del( op, lt2, e );
 441         if ( rs->sr_err != LDAP_SUCCESS ) {
 442 #ifdef NEW_LOGGING
 443                 LDAP_LOG ( OPERATION, ERR,
 444                         "<=- bdb_delete: index failed: %s (%d)\n",
 445                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 446 #else
 447                 Debug( LDAP_DEBUG_TRACE,
 448                         "<=- bdb_delete: index failed: %s (%d)\n",
 449                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 450 #endif
 451                 switch( rs->sr_err ) {
 452                 case DB_LOCK_DEADLOCK:
 453                 case DB_LOCK_NOTGRANTED:
 454                         goto retry;
 455                 }
 456                 rs->sr_text = "entry index delete failed";
 457                 rs->sr_err = LDAP_OTHER;
 458                 goto return_results;
 459         }
 460         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 461                 rs->sr_err = LDAP_OTHER;
 462                 rs->sr_text = "txn_commit(2) failed";
 463                 goto return_results;
 464         }
 465
 466 #if 0   /* Do we want to reclaim deleted IDs? */
 467         ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex );
 468         if ( e->e_id == bdb->bi_lastid ) {
 469                 bdb_last_id( op->o_bd, ltid );
 470         }
 471         ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
 472 #endif
 473
 474         if ( !op->o_bd->syncinfo ) {
 475                 rc = bdb_csn_commit( op, rs, ltid, ei, &suffix_ei, &ctxcsn_e, &ctxcsn_added, locker );
 476                 switch ( rc ) {
 477                 case BDB_CSN_ABORT :
 478                         goto return_results;
 479                 case BDB_CSN_RETRY :
 480                         goto retry;
 481                 }
 482         }
 483
 484         if( op->o_noop ) {
 485                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 486                         rs->sr_text = "txn_abort (no-op) failed";
 487                 } else {
 488                         noop = 1;
 489                         rs->sr_err = LDAP_SUCCESS;
 490                 }
 491         } else {
 492                 bdb_cache_delete( &bdb->bi_cache, e, bdb->bi_dbenv,
 493                         locker, &lock );
 494
 495                 if ( !op->o_bd->syncinfo ) {
 496                         if ( ctxcsn_added ) {
 497                                 bdb_cache_add( bdb, suffix_ei, ctxcsn_e, (struct berval *)&slap_ldapsync_cn_bv, locker );
 498                         }
 499                 }
 500
 501                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 502         }
 503         ltid = NULL;
 504         op->o_private = NULL;
 505
 506         if( rs->sr_err != 0 ) {
 507 #ifdef NEW_LOGGING
 508                 LDAP_LOG ( OPERATION, ERR,
 509                         "bdb_delete: txn_%s failed: %s (%d)\n",
 510                         op->o_noop ? "abort (no-op)" : "commit", db_strerror(rs->sr_err), rs->sr_err );
 511 #else
 512                 Debug( LDAP_DEBUG_TRACE,
 513                         "bdb_delete: txn_%s failed: %s (%d)\n",
 514                         op->o_noop ? "abort (no-op)" : "commit",
 515                         db_strerror(rs->sr_err), rs->sr_err );
 516 #endif
 517                 rs->sr_err = LDAP_OTHER;
 518                 rs->sr_text = "commit failed";
 519
 520                 goto return_results;
 521         }
 522
 523 #ifdef NEW_LOGGING
 524         LDAP_LOG ( OPERATION, RESULTS,
 525                 "bdb_delete: deleted%s id=%08lx db=\"%s\"\n",
 526                 op->o_noop ? " (no-op)" : "", e->e_id, e->e_dn );
 527 #else
 528         Debug( LDAP_DEBUG_TRACE,
 529                 "bdb_delete: deleted%s id=%08lx dn=\"%s\"\n",
 530                 op->o_noop ? " (no-op)" : "",
 531                 e->e_id, e->e_dn );
 532 #endif
 533         rs->sr_err = LDAP_SUCCESS;
 534         rs->sr_text = NULL;
 535         if( num_ctrls ) rs->sr_ctrls = ctrls;
 536
 537 return_results:
 538         send_ldap_result( op, rs );
 539
 540         if ( rs->sr_err == LDAP_SUCCESS && !noop ) {
 541                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 542                         bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_DELETE );
 543                 }
 544         }
 545
 546         if(rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 547                 ldap_pvt_thread_yield();
 548                 TXN_CHECKPOINT( bdb->bi_dbenv,
 549                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 550         }
 551
 552 done:
 553         /* free entry */
 554         if( e != NULL ) {
 555                 if ( rs->sr_err == LDAP_SUCCESS ) {
 556                         /* Free the EntryInfo and the Entry */
 557                         bdb_cache_delete_cleanup( &bdb->bi_cache, e );
 558                 } else {
 559                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 560                 }
 561         }
 562
 563         if( ltid != NULL ) {
 564                 TXN_ABORT( ltid );
 565                 op->o_private = NULL;
 566         }
 567
 568         return ( ( rs->sr_err == LDAP_SUCCESS ) ? noop : rs->sr_err );
 569 }