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;
  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 #if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
  37         Operation* ps_list;
  38 #endif
  39
  40 #ifdef NEW_LOGGING
  41         LDAP_LOG ( OPERATION, ARGS,  "==> bdb_delete: %s\n", op->o_req_dn.bv_val, 0, 0 );
  42 #else
  43         Debug( LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n",
  44                 op->o_req_dn.bv_val, 0, 0 );
  45 #endif
  46
  47         if( 0 ) {
  48 retry:  /* transaction retry */
  49                 if( e != NULL ) {
  50                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
  51                         e = NULL;
  52                 }
  53 #ifdef NEW_LOGGING
  54                 LDAP_LOG ( OPERATION, DETAIL1,
  55                         "==> bdb_delete: retrying...\n", 0, 0, 0 );
  56 #else
  57                 Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n",
  58                         0, 0, 0 );
  59 #endif
  60                 rs->sr_err = TXN_ABORT( ltid );
  61                 ltid = NULL;
  62                 op->o_private = NULL;
  63                 op->o_do_not_cache = opinfo.boi_acl_cache;
  64                 if( rs->sr_err != 0 ) {
  65                         rs->sr_err = LDAP_OTHER;
  66                         rs->sr_text = "internal error";
  67                         goto return_results;
  68                 }
  69                 ldap_pvt_thread_yield();
  70         }
  71
  72         /* begin transaction */
  73         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
  74                 bdb->bi_db_opflags );
  75         rs->sr_text = NULL;
  76         if( rs->sr_err != 0 ) {
  77 #ifdef NEW_LOGGING
  78                 LDAP_LOG ( OPERATION, ERR,
  79                         "==> bdb_delete: txn_begin failed: %s (%d)\n",
  80                         db_strerror(rs->sr_err), rs->sr_err, 0 );
  81 #else
  82                 Debug( LDAP_DEBUG_TRACE,
  83                         "bdb_delete: txn_begin failed: %s (%d)\n",
  84                         db_strerror(rs->sr_err), rs->sr_err, 0 );
  85 #endif
  86                 rs->sr_err = LDAP_OTHER;
  87                 rs->sr_text = "internal error";
  88                 goto return_results;
  89         }
  90
  91         locker = TXN_ID ( ltid );
  92
  93         opinfo.boi_bdb = op->o_bd;
  94         opinfo.boi_txn = ltid;
  95         opinfo.boi_locker = locker;
  96         opinfo.boi_err = 0;
  97         opinfo.boi_acl_cache = op->o_do_not_cache;
  98         op->o_private = &opinfo;
  99
 100         if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 101                 dnParent( &op->o_req_ndn, &pdn );
 102         }
 103
 104         /* get entry */
 105         rs->sr_err = bdb_dn2entry( op->o_bd, ltid, &op->o_req_ndn, &ei, 1,
 106                 locker, &lock, op->o_tmpmemctx );
 107
 108         switch( rs->sr_err ) {
 109         case 0:
 110         case DB_NOTFOUND:
 111                 break;
 112         case DB_LOCK_DEADLOCK:
 113         case DB_LOCK_NOTGRANTED:
 114                 goto retry;
 115         case LDAP_BUSY:
 116                 rs->sr_text = "ldap server busy";
 117                 goto return_results;
 118         default:
 119                 rs->sr_err = LDAP_OTHER;
 120                 rs->sr_text = "internal error";
 121                 goto return_results;
 122         }
 123
 124         if ( rs->sr_err == 0 ) {
 125                 e = ei->bei_e;
 126                 eip = ei->bei_parent;
 127                 bdb_cache_find_entry_id( op->o_bd, ltid, eip->bei_id, &eip,
 128                         0, locker, &plock, op->o_tmpmemctx );
 129         }
 130         if ( eip ) {
 131                 p = eip->bei_e;
 132         }
 133
 134         if ( pdn.bv_len != 0 ) {
 135                 if( p == NULL || !bvmatch( &pdn, &p->e_nname )) {
 136 #ifdef NEW_LOGGING
 137                         LDAP_LOG ( OPERATION, DETAIL1,
 138                                 "<=- bdb_delete: parent does not exist\n", 0, 0, 0 );
 139 #else
 140                         Debug( LDAP_DEBUG_TRACE,
 141                                 "<=- bdb_delete: parent does not exist\n",
 142                                 0, 0, 0);
 143 #endif
 144                         rs->sr_err = LDAP_OTHER;
 145                         rs->sr_text = "could not locate parent of entry";
 146                         goto return_results;
 147                 }
 148
 149                 /* check parent for "children" acl */
 150                 rs->sr_err = access_allowed( op, p,
 151                         children, NULL, ACL_WRITE, NULL );
 152
 153                 bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
 154                 p = NULL;
 155
 156                 if ( !rs->sr_err  ) {
 157                         switch( opinfo.boi_err ) {
 158                         case DB_LOCK_DEADLOCK:
 159                         case DB_LOCK_NOTGRANTED:
 160                                 goto retry;
 161                         }
 162
 163 #ifdef NEW_LOGGING
 164                         LDAP_LOG ( OPERATION, DETAIL1,
 165                                 "<=- bdb_delete: no write access to parent\n", 0, 0, 0 );
 166 #else
 167                         Debug( LDAP_DEBUG_TRACE,
 168                                 "<=- bdb_delete: no write access to parent\n",
 169                                 0, 0, 0 );
 170 #endif
 171                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 172                         rs->sr_text = "no write access to parent";
 173                         goto return_results;
 174                 }
 175
 176         } else {
 177                 /* no parent, must be root to delete */
 178                 if( ! be_isroot( op->o_bd, &op->o_ndn ) ) {
 179                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
 180                                 || be_isupdate( op->o_bd, &op->o_ndn ) ) {
 181                                 p = (Entry *)&slap_entry_root;
 182
 183                                 /* check parent for "children" acl */
 184                                 rs->sr_err = access_allowed( op, p,
 185                                         children, NULL, ACL_WRITE, NULL );
 186
 187                                 p = NULL;
 188
 189                                 if ( !rs->sr_err  ) {
 190                                         switch( opinfo.boi_err ) {
 191                                         case DB_LOCK_DEADLOCK:
 192                                         case DB_LOCK_NOTGRANTED:
 193                                                 goto retry;
 194                                         }
 195
 196 #ifdef NEW_LOGGING
 197                                         LDAP_LOG ( OPERATION, DETAIL1,
 198                                                 "<=- bdb_delete: no access to parent\n", 0, 0, 0 );
 199 #else
 200                                         Debug( LDAP_DEBUG_TRACE,
 201                                                 "<=- bdb_delete: no access "
 202                                                 "to parent\n", 0, 0, 0 );
 203 #endif
 204                                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 205                                         rs->sr_text = "no write access to parent";
 206                                         goto return_results;
 207                                 }
 208
 209                         } else {
 210 #ifdef NEW_LOGGING
 211                                 LDAP_LOG ( OPERATION, DETAIL1,
 212                                         "<=- bdb_delete: no parent and not root\n", 0, 0, 0 );
 213 #else
 214                                 Debug( LDAP_DEBUG_TRACE,
 215                                         "<=- bdb_delete: no parent "
 216                                         "and not root\n", 0, 0, 0);
 217 #endif
 218                                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 219                                 goto return_results;
 220                         }
 221                 }
 222         }
 223
 224         if ( e == NULL ) {
 225 #ifdef NEW_LOGGING
 226                 LDAP_LOG ( OPERATION, ARGS,
 227                         "<=- bdb_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0);
 228 #else
 229                 Debug( LDAP_DEBUG_ARGS,
 230                         "<=- bdb_delete: no such object %s\n",
 231                         op->o_req_dn.bv_val, 0, 0);
 232 #endif
 233
 234                 if ( matched != NULL ) {
 235                         rs->sr_matched = ch_strdup( matched->e_dn );
 236                         rs->sr_ref = is_entry_referral( matched )
 237                                 ? get_entry_referrals( op, matched )
 238                                 : NULL;
 239                         bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, matched);
 240                         matched = NULL;
 241
 242                 } else {
 243                         rs->sr_ref = referral_rewrite( default_referral,
 244                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 245                 }
 246
 247                 rs->sr_err = LDAP_REFERRAL;
 248                 send_ldap_result( op, rs );
 249
 250                 ber_bvarray_free( rs->sr_ref );
 251                 free( (char *)rs->sr_matched );
 252                 rs->sr_ref = NULL;
 253                 rs->sr_matched = NULL;
 254
 255                 rs->sr_err = -1;
 256                 goto done;
 257         }
 258
 259         rs->sr_err = access_allowed( op, e,
 260                 entry, NULL, ACL_WRITE, NULL );
 261
 262         if ( !rs->sr_err  ) {
 263                 switch( opinfo.boi_err ) {
 264                 case DB_LOCK_DEADLOCK:
 265                 case DB_LOCK_NOTGRANTED:
 266                         goto retry;
 267                 }
 268
 269 #ifdef NEW_LOGGING
 270                 LDAP_LOG ( OPERATION, DETAIL1,
 271                         "<=- bdb_delete: no write access to entry\n", 0, 0, 0 );
 272 #else
 273                 Debug( LDAP_DEBUG_TRACE,
 274                         "<=- bdb_delete: no write access to entry\n",
 275                         0, 0, 0 );
 276 #endif
 277                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 278                 rs->sr_text = "no write access to entry";
 279                 goto return_results;
 280         }
 281
 282         if ( !manageDSAit && is_entry_referral( e ) ) {
 283                 /* entry is a referral, don't allow delete */
 284                 rs->sr_ref = get_entry_referrals( op, e );
 285
 286 #ifdef NEW_LOGGING
 287                 LDAP_LOG ( OPERATION, DETAIL1,
 288                         "<=- bdb_delete: entry is referral\n", 0, 0, 0 );
 289 #else
 290                 Debug( LDAP_DEBUG_TRACE,
 291                         "bdb_delete: entry is referral\n",
 292                         0, 0, 0 );
 293 #endif
 294
 295                 rs->sr_err = LDAP_REFERRAL;
 296                 rs->sr_matched = e->e_name.bv_val;
 297                 send_ldap_result( op, rs );
 298
 299                 ber_bvarray_free( rs->sr_ref );
 300                 rs->sr_ref = NULL;
 301                 rs->sr_matched = NULL;
 302
 303                 rs->sr_err = 1;
 304                 goto done;
 305         }
 306
 307         /* nested transaction */
 308         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 309                 bdb->bi_db_opflags );
 310         rs->sr_text = NULL;
 311         if( rs->sr_err != 0 ) {
 312 #ifdef NEW_LOGGING
 313                 LDAP_LOG ( OPERATION, ERR,
 314                         "bdb_delete: txn_begin(2) failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 315 #else
 316                 Debug( LDAP_DEBUG_TRACE,
 317                         "bdb_delete: txn_begin(2) failed: %s (%d)\n",
 318                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 319 #endif
 320                 rs->sr_err = LDAP_OTHER;
 321                 rs->sr_text = "internal error";
 322                 goto return_results;
 323         }
 324
 325         /* Can't do it if we have kids */
 326         rs->sr_err = bdb_cache_children( op, lt2, e );
 327         if( rs->sr_err != DB_NOTFOUND ) {
 328                 switch( rs->sr_err ) {
 329                 case DB_LOCK_DEADLOCK:
 330                 case DB_LOCK_NOTGRANTED:
 331                         goto retry;
 332                 case 0:
 333 #ifdef NEW_LOGGING
 334                         LDAP_LOG ( OPERATION, DETAIL1,
 335                                 "<=- bdb_delete: non-leaf %s\n", op->o_req_dn.bv_val, 0, 0 );
 336 #else
 337                         Debug(LDAP_DEBUG_ARGS,
 338                                 "<=- bdb_delete: non-leaf %s\n",
 339                                 op->o_req_dn.bv_val, 0, 0);
 340 #endif
 341                         rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
 342                         rs->sr_text = "subtree delete not supported";
 343                         break;
 344                 default:
 345 #ifdef NEW_LOGGING
 346                         LDAP_LOG ( OPERATION, ERR,
 347                                 "<=- bdb_delete: has_children failed %s (%d)\n",
 348                                 db_strerror(rs->sr_err), rs->sr_err, 0 );
 349 #else
 350                         Debug(LDAP_DEBUG_ARGS,
 351                                 "<=- bdb_delete: has_children failed: %s (%d)\n",
 352                                 db_strerror(rs->sr_err), rs->sr_err, 0 );
 353 #endif
 354                         rs->sr_err = LDAP_OTHER;
 355                         rs->sr_text = "internal error";
 356                 }
 357                 goto return_results;
 358         }
 359
 360         /* delete from dn2id */
 361         rs->sr_err = bdb_dn2id_delete( op->o_bd, lt2, eip, e,
 362                 op->o_tmpmemctx );
 363         if ( rs->sr_err != 0 ) {
 364                 switch( rs->sr_err ) {
 365                 case DB_LOCK_DEADLOCK:
 366                 case DB_LOCK_NOTGRANTED:
 367                         goto retry;
 368                 }
 369 #ifdef NEW_LOGGING
 370                 LDAP_LOG ( OPERATION, ERR,
 371                         "<=- bdb_delete: dn2id failed %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 372 #else
 373                 Debug(LDAP_DEBUG_ARGS,
 374                         "<=- bdb_delete: dn2id failed: %s (%d)\n",
 375                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 376 #endif
 377                 rs->sr_text = "DN index delete failed";
 378                 rs->sr_err = LDAP_OTHER;
 379                 goto return_results;
 380         }
 381
 382         /* delete from id2entry */
 383         rs->sr_err = bdb_id2entry_delete( op->o_bd, lt2, e );
 384         if ( rs->sr_err != 0 ) {
 385                 switch( rs->sr_err ) {
 386                 case DB_LOCK_DEADLOCK:
 387                 case DB_LOCK_NOTGRANTED:
 388                         goto retry;
 389                 }
 390 #ifdef NEW_LOGGING
 391                 LDAP_LOG ( OPERATION, ERR,
 392                         "<=- bdb_delete: id2entry failed: %s (%d)\n",
 393                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 394 #else
 395                 Debug(LDAP_DEBUG_ARGS,
 396                         "<=- bdb_delete: id2entry failed: %s (%d)\n",
 397                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 398 #endif
 399                 rs->sr_text = "entry delete failed";
 400                 rs->sr_err = LDAP_OTHER;
 401                 goto return_results;
 402         }
 403
 404         /* delete indices for old attributes */
 405         rs->sr_err = bdb_index_entry_del( op, lt2, e );
 406         if ( rs->sr_err != LDAP_SUCCESS ) {
 407                 switch( rs->sr_err ) {
 408                 case DB_LOCK_DEADLOCK:
 409                 case DB_LOCK_NOTGRANTED:
 410                         goto retry;
 411                 }
 412 #ifdef NEW_LOGGING
 413                 LDAP_LOG ( OPERATION, ERR,
 414                         "<=- bdb_delete: entry index delete failed!\n", 0, 0, 0 );
 415 #else
 416                 Debug( LDAP_DEBUG_ANY, "entry index delete failed!\n",
 417                         0, 0, 0 );
 418 #endif
 419                 rs->sr_text = "entry index delete failed";
 420                 rs->sr_err = LDAP_OTHER;
 421                 goto return_results;
 422         }
 423         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 424                 rs->sr_err = LDAP_OTHER;
 425                 rs->sr_text = "txn_commit(2) failed";
 426                 goto return_results;
 427         }
 428
 429 #if 0   /* Do we want to reclaim deleted IDs? */
 430         ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex );
 431         if ( e->e_id == bdb->bi_lastid ) {
 432                 bdb_last_id( op->o_bd, ltid );
 433         }
 434         ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
 435 #endif
 436
 437         if( op->o_noop ) {
 438                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
 439                         rs->sr_text = "txn_abort (no-op) failed";
 440                 } else {
 441                         noop = 1;
 442                         rs->sr_err = LDAP_SUCCESS;
 443                 }
 444         } else {
 445                 bdb_cache_delete_entry( &bdb->bi_cache, e, bdb->bi_dbenv,
 446                         locker, &lock );
 447                 rs->sr_err = TXN_COMMIT( ltid, 0 );
 448         }
 449         ltid = NULL;
 450         op->o_private = NULL;
 451
 452         if( rs->sr_err != 0 ) {
 453 #ifdef NEW_LOGGING
 454                 LDAP_LOG ( OPERATION, ERR,
 455                         "bdb_delete: txn_%s failed: %s (%d)\n",
 456                         op->o_noop ? "abort (no-op)" : "commit", db_strerror(rs->sr_err), rs->sr_err );
 457 #else
 458                 Debug( LDAP_DEBUG_TRACE,
 459                         "bdb_delete: txn_%s failed: %s (%d)\n",
 460                         op->o_noop ? "abort (no-op)" : "commit",
 461                         db_strerror(rs->sr_err), rs->sr_err );
 462 #endif
 463                 rs->sr_err = LDAP_OTHER;
 464                 rs->sr_text = "commit failed";
 465
 466         } else {
 467 #ifdef NEW_LOGGING
 468                 LDAP_LOG ( OPERATION, RESULTS,
 469                         "bdb_delete: deleted%s id=%08lx db=\"%s\"\n",
 470                         op->o_noop ? " (no-op)" : "", e->e_id, e->e_dn );
 471 #else
 472                 Debug( LDAP_DEBUG_TRACE,
 473                         "bdb_delete: deleted%s id=%08lx dn=\"%s\"\n",
 474                         op->o_noop ? " (no-op)" : "",
 475                         e->e_id, e->e_dn );
 476 #endif
 477                 rs->sr_err = LDAP_SUCCESS;
 478                 rs->sr_text = NULL;
 479         }
 480
 481 return_results:
 482         send_ldap_result( op, rs );
 483
 484 #if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
 485         if ( rs->sr_err == LDAP_SUCCESS && !noop ) {
 486                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 487                         bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_DELETE );
 488                 }
 489         }
 490 #endif
 491
 492         if(rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 493                 ldap_pvt_thread_yield();
 494                 TXN_CHECKPOINT( bdb->bi_dbenv,
 495                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 496         }
 497
 498 done:
 499         /* free entry */
 500         if( e != NULL ) {
 501                 if ( rs->sr_err == LDAP_SUCCESS ) {
 502                         bdb_entry_return( e );
 503                 } else {
 504                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
 505                 }
 506         }
 507
 508         if( ltid != NULL ) {
 509                 TXN_ABORT( ltid );
 510                 op->o_private = NULL;
 511         }
 512
 513         return ( ( rs->sr_err == LDAP_SUCCESS ) ? noop : rs->sr_err );
 514 }