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

   1 /* add.c - ldap BerkeleyDB back-end add routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2004 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 #include "external.h"
  24
  25 int
  26 bdb_add(Operation *op, SlapReply *rs )
  27 {
  28         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  29         struct berval   pdn;
  30         Entry           *p = NULL;
  31         EntryInfo       *ei;
  32         char textbuf[SLAP_TEXT_BUFLEN];
  33         size_t textlen = sizeof textbuf;
  34         AttributeDescription *children = slap_schema.si_ad_children;
  35         AttributeDescription *entry = slap_schema.si_ad_entry;
  36         DB_TXN          *ltid = NULL, *lt2;
  37         struct bdb_op_info opinfo;
  38 #ifdef BDB_SUBENTRIES
  39         int subentry;
  40 #endif
  41         u_int32_t       locker = 0;
  42         DB_LOCK         lock;
  43
  44         int             num_retries = 0;
  45
  46         Operation* ps_list;
  47         int             rc;
  48         EntryInfo       *suffix_ei = NULL;
  49         Entry           *ctxcsn_e;
  50         int                     ctxcsn_added = 0;
  51
  52         LDAPControl **postread_ctrl = NULL;
  53         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  54         int num_ctrls = 0;
  55
  56         Debug(LDAP_DEBUG_ARGS, "==> bdb_add: %s\n",
  57                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  58
  59         ctrls[num_ctrls] = 0;
  60
  61         /* check entry's schema */
  62         rs->sr_err = entry_schema_check( op->o_bd, op->oq_add.rs_e,
  63                 NULL, &rs->sr_text, textbuf, textlen );
  64         if ( rs->sr_err != LDAP_SUCCESS ) {
  65                 Debug( LDAP_DEBUG_TRACE,
  66                         "bdb_add: entry failed schema check: %s (%d)\n",
  67                         rs->sr_text, rs->sr_err, 0 );
  68                 goto return_results;
  69         }
  70
  71 #ifdef BDB_SUBENTRIES
  72         subentry = is_entry_subentry( op->oq_add.rs_e );
  73 #endif
  74
  75         /*
  76          * acquire an ID outside of the operation transaction
  77          * to avoid serializing adds.
  78          */
  79         rs->sr_err = bdb_next_id( op->o_bd, NULL, &op->oq_add.rs_e->e_id );
  80         if( rs->sr_err != 0 ) {
  81                 Debug( LDAP_DEBUG_TRACE,
  82                         "bdb_add: next_id failed (%d)\n", rs->sr_err, 0, 0 );
  83                 rs->sr_err = LDAP_OTHER;
  84                 rs->sr_text = "internal error";
  85                 goto return_results;
  86         }
  87
  88         if( 0 ) {
  89 retry:  /* transaction retry */
  90                 if( p ) {
  91                         /* free parent and reader lock */
  92                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
  93                         p = NULL;
  94                 }
  95                 rs->sr_err = TXN_ABORT( ltid );
  96                 ltid = NULL;
  97                 op->o_private = NULL;
  98                 op->o_do_not_cache = opinfo.boi_acl_cache;
  99                 if( rs->sr_err != 0 ) {
 100                         rs->sr_err = LDAP_OTHER;
 101                         rs->sr_text = "internal error";
 102                         goto return_results;
 103                 }
 104                 ldap_pvt_thread_yield();
 105                 bdb_trans_backoff( ++num_retries );
 106         }
 107
 108         /* begin transaction */
 109         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 110                 bdb->bi_db_opflags );
 111         rs->sr_text = NULL;
 112         if( rs->sr_err != 0 ) {
 113                 Debug( LDAP_DEBUG_TRACE,
 114                         "bdb_add: txn_begin failed: %s (%d)\n",
 115                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 116                 rs->sr_err = LDAP_OTHER;
 117                 rs->sr_text = "internal error";
 118                 goto return_results;
 119         }
 120
 121         locker = TXN_ID ( ltid );
 122
 123         opinfo.boi_bdb = op->o_bd;
 124         opinfo.boi_txn = ltid;
 125         opinfo.boi_locker = locker;
 126         opinfo.boi_err = 0;
 127         opinfo.boi_acl_cache = op->o_do_not_cache;
 128         op->o_private = &opinfo;
 129
 130         /*
 131          * Get the parent dn and see if the corresponding entry exists.
 132          */
 133         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 134                 pdn = slap_empty_bv;
 135         } else {
 136                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 137         }
 138
 139         /* get entry or parent */
 140         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 141                 1, locker, &lock );
 142         switch( rs->sr_err ) {
 143         case 0:
 144                 rs->sr_err = LDAP_ALREADY_EXISTS;
 145                 goto return_results;
 146         case DB_NOTFOUND:
 147                 break;
 148         case DB_LOCK_DEADLOCK:
 149         case DB_LOCK_NOTGRANTED:
 150                 goto retry;
 151         case LDAP_BUSY:
 152                 rs->sr_text = "ldap server busy";
 153                 goto return_results;
 154         default:
 155                 rs->sr_err = LDAP_OTHER;
 156                 rs->sr_text = "internal error";
 157                 goto return_results;
 158         }
 159
 160         p = ei->bei_e;
 161         if ( p ) {
 162                 if ( !bvmatch( &pdn, &p->e_nname ) ) {
 163                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 164                                 op->o_tmpmemctx );
 165                         rs->sr_ref = is_entry_referral( p )
 166                                 ? get_entry_referrals( op, p )
 167                                 : NULL;
 168                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 169                         p = NULL;
 170                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent does not exist\n",
 171                                 0, 0, 0 );
 172
 173                         rs->sr_err = LDAP_REFERRAL;
 174                         send_ldap_result( op, rs );
 175
 176                         ber_bvarray_free( rs->sr_ref );
 177                         op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx );
 178                         rs->sr_ref = NULL;
 179                         rs->sr_matched = NULL;
 180
 181                         goto done;
 182                 }
 183
 184                 rs->sr_err = access_allowed( op, p,
 185                         children, NULL, ACL_WRITE, NULL );
 186
 187                 if ( ! rs->sr_err ) {
 188                         switch( opinfo.boi_err ) {
 189                         case DB_LOCK_DEADLOCK:
 190                         case DB_LOCK_NOTGRANTED:
 191                                 goto retry;
 192                         }
 193
 194                         Debug( LDAP_DEBUG_TRACE,
 195                                 "bdb_add: no write access to parent\n", 0, 0, 0 );
 196                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 197                         rs->sr_text = "no write access to parent";
 198                         goto return_results;;
 199                 }
 200
 201 #ifdef BDB_SUBENTRIES
 202                 if ( is_entry_subentry( p ) ) {
 203                         /* parent is a subentry, don't allow add */
 204                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 205                                 0, 0, 0 );
 206                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 207                         rs->sr_text = "parent is a subentry";
 208                         goto return_results;;
 209                 }
 210 #endif
 211                 if ( is_entry_alias( p ) ) {
 212                         /* parent is an alias, don't allow add */
 213                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is alias\n",
 214                                 0, 0, 0 );
 215                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 216                         rs->sr_text = "parent is an alias";
 217                         goto return_results;;
 218                 }
 219
 220                 if ( is_entry_referral( p ) ) {
 221                         /* parent is a referral, don't allow add */
 222                         rs->sr_matched = p->e_name.bv_val;
 223                         rs->sr_ref = get_entry_referrals( op, p );
 224
 225                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is referral\n",
 226                                 0, 0, 0 );
 227
 228                         rs->sr_err = LDAP_REFERRAL;
 229                         send_ldap_result( op, rs );
 230
 231                         ber_bvarray_free( rs->sr_ref );
 232                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 233                         rs->sr_ref = NULL;
 234                         rs->sr_matched = NULL;
 235                         p = NULL;
 236                         goto done;
 237                 }
 238
 239 #ifdef BDB_SUBENTRIES
 240                 if ( subentry ) {
 241                         /* FIXME: */
 242                         /* parent must be an administrative point of the required kind */
 243                 }
 244 #endif
 245
 246                 /* free parent and reader lock */
 247                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 248                 p = NULL;
 249
 250         } else {
 251                 /*
 252                  * no parent!
 253                  *  if not attempting to add entry at suffix or with parent ""
 254                  */
 255                 if ((( !be_isroot( op ) && !be_shadow_update(op) )
 256                         || pdn.bv_len > 0 ) && !is_entry_glue( op->oq_add.rs_e ))
 257                 {
 258                         Debug( LDAP_DEBUG_TRACE, "bdb_add: %s denied\n",
 259                                 pdn.bv_len == 0 ? "suffix" : "entry at root",
 260                                 0, 0 );
 261                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 262                         goto return_results;
 263                 }
 264         }
 265
 266         if ( get_assert( op ) &&
 267                 ( test_filter( op, op->oq_add.rs_e, get_assertion( op ))
 268                         != LDAP_COMPARE_TRUE ))
 269         {
 270                 rs->sr_err = LDAP_ASSERTION_FAILED;
 271                 goto return_results;
 272         }
 273
 274         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 275                 entry, NULL, ACL_WRITE, NULL );
 276
 277         if ( ! rs->sr_err ) {
 278                 switch( opinfo.boi_err ) {
 279                 case DB_LOCK_DEADLOCK:
 280                 case DB_LOCK_NOTGRANTED:
 281                         goto retry;
 282                 }
 283
 284                 Debug( LDAP_DEBUG_TRACE, "bdb_add: no write access to entry\n",
 285                         0, 0, 0 );
 286                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 287                 rs->sr_text = "no write access to entry";
 288                 goto return_results;;
 289         }
 290
 291         /* nested transaction */
 292         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 293                 bdb->bi_db_opflags );
 294         rs->sr_text = NULL;
 295         if( rs->sr_err != 0 ) {
 296                 Debug( LDAP_DEBUG_TRACE,
 297                         "bdb_add: txn_begin(2) failed: %s (%d)\n",
 298                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 299                 rs->sr_err = LDAP_OTHER;
 300                 rs->sr_text = "internal error";
 301                 goto return_results;
 302         }
 303
 304         /* dn2id index */
 305         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 306         if ( rs->sr_err != 0 ) {
 307                 Debug( LDAP_DEBUG_TRACE, "bdb_add: dn2id_add failed: %s (%d)\n",
 308                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 309
 310                 switch( rs->sr_err ) {
 311                 case DB_LOCK_DEADLOCK:
 312                 case DB_LOCK_NOTGRANTED:
 313                         goto retry;
 314                 case DB_KEYEXIST:
 315                         rs->sr_err = LDAP_ALREADY_EXISTS;
 316                         break;
 317                 default:
 318                         rs->sr_err = LDAP_OTHER;
 319                 }
 320                 goto return_results;
 321         }
 322
 323         /* id2entry index */
 324         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 325         if ( rs->sr_err != 0 ) {
 326                 Debug( LDAP_DEBUG_TRACE, "bdb_add: id2entry_add failed\n",
 327                         0, 0, 0 );
 328                 switch( rs->sr_err ) {
 329                 case DB_LOCK_DEADLOCK:
 330                 case DB_LOCK_NOTGRANTED:
 331                         goto retry;
 332                 default:
 333                         rs->sr_err = LDAP_OTHER;
 334                 }
 335                 rs->sr_text = "entry store failed";
 336                 goto return_results;
 337         }
 338
 339         /* attribute indexes */
 340         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 341         if ( rs->sr_err != LDAP_SUCCESS ) {
 342                 Debug( LDAP_DEBUG_TRACE, "bdb_add: index_entry_add failed\n",
 343                         0, 0, 0 );
 344                 switch( rs->sr_err ) {
 345                 case DB_LOCK_DEADLOCK:
 346                 case DB_LOCK_NOTGRANTED:
 347                         goto retry;
 348                 default:
 349                         rs->sr_err = LDAP_OTHER;
 350                 }
 351                 rs->sr_text = "index generation failed";
 352                 goto return_results;
 353         }
 354         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 355                 rs->sr_err = LDAP_OTHER;
 356                 rs->sr_text = "txn_commit(2) failed";
 357                 goto return_results;
 358         }
 359
 360         if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
 361                 rc = bdb_csn_commit( op, rs, ltid, ei, &suffix_ei,
 362                         &ctxcsn_e, &ctxcsn_added, locker );
 363                 switch ( rc ) {
 364                 case BDB_CSN_ABORT :
 365                         goto return_results;
 366                 case BDB_CSN_RETRY :
 367                         goto retry;
 368                 }
 369         }
 370
 371         /* post-read */
 372         if( op->o_postread ) {
 373                 if( postread_ctrl == NULL ) {
 374                         postread_ctrl = &ctrls[num_ctrls++];
 375                         ctrls[num_ctrls] = NULL;
 376                 }
 377                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 378                         &slap_post_read_bv, postread_ctrl ) )
 379                 {
 380                         Debug( LDAP_DEBUG_TRACE,
 381                                 "<=- bdb_add: post-read failed!\n", 0, 0, 0 );
 382                         goto return_results;
 383                 }
 384         }
 385
 386         if ( op->o_noop ) {
 387                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 388                         rs->sr_text = "txn_abort (no-op) failed";
 389                 } else {
 390                         rs->sr_err = LDAP_NO_OPERATION;
 391                         goto return_results;
 392                 }
 393
 394         } else {
 395                 struct berval nrdn;
 396                 Entry *e = entry_dup( op->ora_e );
 397
 398                 if (pdn.bv_len) {
 399                         nrdn.bv_val = e->e_nname.bv_val;
 400                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 401                 } else {
 402                         nrdn = e->e_nname;
 403                 }
 404
 405                 bdb_cache_add( bdb, ei, e, &nrdn, locker );
 406
 407                 if ( suffix_ei == NULL ) {
 408                         suffix_ei = BEI(e);
 409                 }
 410
 411                 if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
 412                         if ( ctxcsn_added ) {
 413                                 bdb_cache_add( bdb, suffix_ei, ctxcsn_e,
 414                                         (struct berval *)&slap_ldapsync_cn_bv, locker );
 415                         }
 416                 }
 417
 418                 if ( rs->sr_err == LDAP_SUCCESS && !op->o_no_psearch ) {
 419                         ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
 420                         assert( BEI(e) );
 421                         LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 422                                 rc = bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_ADD );
 423                                 if ( rc ) {
 424                                         Debug( LDAP_DEBUG_TRACE,
 425                                                 "bdb_add: persistent search failed (%d,%d)\n",
 426                                                 rc, rs->sr_err, 0 );
 427                                 }
 428                         }
 429                         ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
 430                 }
 431
 432                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 433                         rs->sr_text = "txn_commit failed";
 434                 } else {
 435                         rs->sr_err = LDAP_SUCCESS;
 436                 }
 437         }
 438
 439         ltid = NULL;
 440         op->o_private = NULL;
 441
 442         if ( rs->sr_err != LDAP_SUCCESS ) {
 443                 Debug( LDAP_DEBUG_TRACE, "bdb_add: %s : %s (%d)\n",
 444                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 445                 rs->sr_err = LDAP_OTHER;
 446                 goto return_results;
 447         }
 448
 449         Debug(LDAP_DEBUG_TRACE, "bdb_add: added%s id=%08lx dn=\"%s\"\n",
 450                 op->o_noop ? " (no-op)" : "",
 451                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 452
 453         rs->sr_text = NULL;
 454         if( num_ctrls ) rs->sr_ctrls = ctrls;
 455
 456 return_results:
 457         send_ldap_result( op, rs );
 458
 459         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 460                 ldap_pvt_thread_yield();
 461                 TXN_CHECKPOINT( bdb->bi_dbenv,
 462                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 463         }
 464
 465 done:
 466         if( ltid != NULL ) {
 467                 TXN_ABORT( ltid );
 468                 op->o_private = NULL;
 469         }
 470
 471         if( postread_ctrl != NULL ) {
 472                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, &op->o_tmpmemctx );
 473                 slap_sl_free( *postread_ctrl, &op->o_tmpmemctx );
 474         }
 475         return rs->sr_err;
 476 }