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 2000-2007 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_add(Operation *op, SlapReply *rs )
  26 {
  27         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  28         struct berval   pdn;
  29         Entry           *p = NULL, *oe = op->ora_e;
  30         EntryInfo       *ei;
  31         char textbuf[SLAP_TEXT_BUFLEN];
  32         size_t textlen = sizeof textbuf;
  33         AttributeDescription *children = slap_schema.si_ad_children;
  34         AttributeDescription *entry = slap_schema.si_ad_entry;
  35         DB_TXN          *ltid = NULL, *lt2;
  36         struct bdb_op_info opinfo = {0};
  37         int subentry;
  38         BDB_LOCKER      locker = 0, rlocker = 0;
  39         DB_LOCK         lock;
  40
  41         int             num_retries = 0;
  42         int             success;
  43
  44         LDAPControl **postread_ctrl = NULL;
  45         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  46         int num_ctrls = 0;
  47
  48 #ifdef LDAP_X_TXN
  49         int settle = 0;
  50 #endif
  51
  52         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  53                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  54
  55 #ifdef LDAP_X_TXN
  56         if( op->o_txnSpec ) {
  57                 /* acquire connection lock */
  58                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  59                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
  60                         rs->sr_text = "invalid transaction identifier";
  61                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
  62                         goto txnReturn;
  63                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
  64                         settle=1;
  65                         goto txnReturn;
  66                 }
  67
  68                 if( op->o_conn->c_txn_backend == NULL ) {
  69                         op->o_conn->c_txn_backend = op->o_bd;
  70
  71                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
  72                         rs->sr_text = "transaction cannot span multiple database contexts";
  73                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
  74                         goto txnReturn;
  75                 }
  76
  77                 /* insert operation into transaction */
  78
  79                 rs->sr_text = "transaction specified";
  80                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
  81
  82 txnReturn:
  83                 /* release connection lock */
  84                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
  85
  86                 if( !settle ) {
  87                         send_ldap_result( op, rs );
  88                         return rs->sr_err;
  89                 }
  90         }
  91 #endif
  92
  93         ctrls[num_ctrls] = 0;
  94
  95
  96         /* check entry's schema */
  97         rs->sr_err = entry_schema_check( op, op->oq_add.rs_e, NULL,
  98                 get_relax(op), 1, &rs->sr_text, textbuf, textlen );
  99         if ( rs->sr_err != LDAP_SUCCESS ) {
 100                 Debug( LDAP_DEBUG_TRACE,
 101                         LDAP_XSTRING(bdb_add) ": entry failed schema check: "
 102                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
 103                 goto return_results;
 104         }
 105
 106         /* add opattrs to shadow as well, only missing attrs will actually
 107          * be added; helps compatibility with older OL versions */
 108         rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
 109         if ( rs->sr_err != LDAP_SUCCESS ) {
 110                 Debug( LDAP_DEBUG_TRACE,
 111                         LDAP_XSTRING(bdb_add) ": entry failed op attrs add: "
 112                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
 113                 goto return_results;
 114         }
 115
 116         subentry = is_entry_subentry( op->oq_add.rs_e );
 117
 118         /*
 119          * acquire an ID outside of the operation transaction
 120          * to avoid serializing adds.
 121          */
 122         rs->sr_err = bdb_next_id( op->o_bd, NULL, &op->oq_add.rs_e->e_id );
 123         if( rs->sr_err != 0 ) {
 124                 Debug( LDAP_DEBUG_TRACE,
 125                         LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 126                         rs->sr_err, 0, 0 );
 127                 rs->sr_err = LDAP_OTHER;
 128                 rs->sr_text = "internal error";
 129                 goto return_results;
 130         }
 131
 132         /* Get our thread locker ID */
 133         rs->sr_err = LOCK_ID( bdb->bi_dbenv, &rlocker );
 134
 135         if( 0 ) {
 136 retry:  /* transaction retry */
 137                 if( p ) {
 138                         /* free parent and reader lock */
 139                         if ( p != (Entry *)&slap_entry_root ) {
 140                                 bdb_unlocked_cache_return_entry_r( bdb, p );
 141                         }
 142                         p = NULL;
 143                 }
 144                 rs->sr_err = TXN_ABORT( ltid );
 145                 ltid = NULL;
 146                 op->o_private = NULL;
 147                 op->o_do_not_cache = opinfo.boi_acl_cache;
 148                 if( rs->sr_err != 0 ) {
 149                         rs->sr_err = LDAP_OTHER;
 150                         rs->sr_text = "internal error";
 151                         goto return_results;
 152                 }
 153                 if ( op->o_abandon ) {
 154                         rs->sr_err = SLAPD_ABANDON;
 155                         goto return_results;
 156                 }
 157                 bdb_trans_backoff( ++num_retries );
 158         }
 159
 160         /* begin transaction */
 161         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 162                 bdb->bi_db_opflags );
 163         rs->sr_text = NULL;
 164         if( rs->sr_err != 0 ) {
 165                 Debug( LDAP_DEBUG_TRACE,
 166                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 167                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 168                 rs->sr_err = LDAP_OTHER;
 169                 rs->sr_text = "internal error";
 170                 goto return_results;
 171         }
 172
 173         locker = TXN_ID ( ltid );
 174
 175         opinfo.boi_bdb = op->o_bd;
 176         opinfo.boi_txn = ltid;
 177         opinfo.boi_locker = locker;
 178         opinfo.boi_err = 0;
 179         opinfo.boi_acl_cache = op->o_do_not_cache;
 180         op->o_private = &opinfo;
 181
 182         /*
 183          * Get the parent dn and see if the corresponding entry exists.
 184          */
 185         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 186                 pdn = slap_empty_bv;
 187         } else {
 188                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 189         }
 190
 191         /* get entry or parent */
 192         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 193                 1, locker, &lock );
 194         switch( rs->sr_err ) {
 195         case 0:
 196                 rs->sr_err = LDAP_ALREADY_EXISTS;
 197                 goto return_results;
 198         case DB_NOTFOUND:
 199                 break;
 200         case DB_LOCK_DEADLOCK:
 201         case DB_LOCK_NOTGRANTED:
 202                 goto retry;
 203         case LDAP_BUSY:
 204                 rs->sr_text = "ldap server busy";
 205                 goto return_results;
 206         default:
 207                 rs->sr_err = LDAP_OTHER;
 208                 rs->sr_text = "internal error";
 209                 goto return_results;
 210         }
 211
 212         p = ei->bei_e;
 213         if ( !p )
 214                 p = (Entry *)&slap_entry_root;
 215
 216         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 217                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 218                         op->o_tmpmemctx );
 219                 rs->sr_ref = is_entry_referral( p )
 220                         ? get_entry_referrals( op, p )
 221                         : NULL;
 222                 bdb_unlocked_cache_return_entry_r( bdb, p );
 223                 p = NULL;
 224                 Debug( LDAP_DEBUG_TRACE,
 225                         LDAP_XSTRING(bdb_add) ": parent "
 226                         "does not exist\n", 0, 0, 0 );
 227
 228                 rs->sr_err = LDAP_REFERRAL;
 229                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 230                 goto return_results;
 231         }
 232
 233         rs->sr_err = access_allowed( op, p,
 234                 children, NULL, ACL_WADD, NULL );
 235
 236         if ( ! rs->sr_err ) {
 237                 switch( opinfo.boi_err ) {
 238                 case DB_LOCK_DEADLOCK:
 239                 case DB_LOCK_NOTGRANTED:
 240                         goto retry;
 241                 }
 242
 243                 Debug( LDAP_DEBUG_TRACE,
 244                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 245                         0, 0, 0 );
 246                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 247                 rs->sr_text = "no write access to parent";
 248                 goto return_results;;
 249         }
 250
 251         if ( p != (Entry *)&slap_entry_root ) {
 252                 if ( is_entry_subentry( p ) ) {
 253                         /* parent is a subentry, don't allow add */
 254                         Debug( LDAP_DEBUG_TRACE,
 255                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 256                                 0, 0, 0 );
 257                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 258                         rs->sr_text = "parent is a subentry";
 259                         goto return_results;;
 260                 }
 261
 262                 if ( is_entry_alias( p ) ) {
 263                         /* parent is an alias, don't allow add */
 264                         Debug( LDAP_DEBUG_TRACE,
 265                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 266                                 0, 0, 0 );
 267                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 268                         rs->sr_text = "parent is an alias";
 269                         goto return_results;;
 270                 }
 271
 272                 if ( is_entry_referral( p ) ) {
 273                         /* parent is a referral, don't allow add */
 274                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 275                                 op->o_tmpmemctx );
 276                         rs->sr_ref = get_entry_referrals( op, p );
 277                         bdb_unlocked_cache_return_entry_r( bdb, p );
 278                         p = NULL;
 279                         Debug( LDAP_DEBUG_TRACE,
 280                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 281                                 0, 0, 0 );
 282
 283                         rs->sr_err = LDAP_REFERRAL;
 284                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 285                         goto return_results;
 286                 }
 287
 288                 if ( subentry ) {
 289                         /* FIXME: */
 290                         /* parent must be an administrative point of the required kind */
 291                 }
 292         }
 293
 294         /* free parent and reader lock */
 295         if ( p != (Entry *)&slap_entry_root ) {
 296                 bdb_unlocked_cache_return_entry_r( bdb, p );
 297         }
 298         p = NULL;
 299
 300         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 301                 entry, NULL, ACL_WADD, NULL );
 302
 303         if ( ! rs->sr_err ) {
 304                 switch( opinfo.boi_err ) {
 305                 case DB_LOCK_DEADLOCK:
 306                 case DB_LOCK_NOTGRANTED:
 307                         goto retry;
 308                 }
 309
 310                 Debug( LDAP_DEBUG_TRACE,
 311                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 312                         0, 0, 0 );
 313                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 314                 rs->sr_text = "no write access to entry";
 315                 goto return_results;;
 316         }
 317
 318         /* nested transaction */
 319         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 320                 bdb->bi_db_opflags );
 321         rs->sr_text = NULL;
 322         if( rs->sr_err != 0 ) {
 323                 Debug( LDAP_DEBUG_TRACE,
 324                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 325                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 326                 rs->sr_err = LDAP_OTHER;
 327                 rs->sr_text = "internal error";
 328                 goto return_results;
 329         }
 330
 331         /* dn2id index */
 332         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 333         if ( rs->sr_err != 0 ) {
 334                 Debug( LDAP_DEBUG_TRACE,
 335                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 336                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 337
 338                 switch( rs->sr_err ) {
 339                 case DB_LOCK_DEADLOCK:
 340                 case DB_LOCK_NOTGRANTED:
 341                         goto retry;
 342                 case DB_KEYEXIST:
 343                         rs->sr_err = LDAP_ALREADY_EXISTS;
 344                         break;
 345                 default:
 346                         rs->sr_err = LDAP_OTHER;
 347                 }
 348                 goto return_results;
 349         }
 350
 351         /* attribute indexes */
 352         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 353         if ( rs->sr_err != LDAP_SUCCESS ) {
 354                 Debug( LDAP_DEBUG_TRACE,
 355                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 356                         0, 0, 0 );
 357                 switch( rs->sr_err ) {
 358                 case DB_LOCK_DEADLOCK:
 359                 case DB_LOCK_NOTGRANTED:
 360                         goto retry;
 361                 default:
 362                         rs->sr_err = LDAP_OTHER;
 363                 }
 364                 rs->sr_text = "index generation failed";
 365                 goto return_results;
 366         }
 367
 368         /* id2entry index */
 369         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 370         if ( rs->sr_err != 0 ) {
 371                 Debug( LDAP_DEBUG_TRACE,
 372                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 373                         0, 0, 0 );
 374                 switch( rs->sr_err ) {
 375                 case DB_LOCK_DEADLOCK:
 376                 case DB_LOCK_NOTGRANTED:
 377                         goto retry;
 378                 default:
 379                         rs->sr_err = LDAP_OTHER;
 380                 }
 381                 rs->sr_text = "entry store failed";
 382                 goto return_results;
 383         }
 384
 385         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 386                 rs->sr_err = LDAP_OTHER;
 387                 rs->sr_text = "txn_commit(2) failed";
 388                 goto return_results;
 389         }
 390
 391         /* post-read */
 392         if( op->o_postread ) {
 393                 if( postread_ctrl == NULL ) {
 394                         postread_ctrl = &ctrls[num_ctrls++];
 395                         ctrls[num_ctrls] = NULL;
 396                 }
 397                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 398                         &slap_post_read_bv, postread_ctrl ) )
 399                 {
 400                         Debug( LDAP_DEBUG_TRACE,
 401                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 402                                 "failed!\n", 0, 0, 0 );
 403                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 404                                 /* FIXME: is it correct to abort
 405                                  * operation if control fails? */
 406                                 goto return_results;
 407                         }
 408                 }
 409         }
 410
 411         if ( op->o_noop ) {
 412                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 413                         rs->sr_text = "txn_abort (no-op) failed";
 414                 } else {
 415                         rs->sr_err = LDAP_X_NO_OPERATION;
 416                         ltid = NULL;
 417                         goto return_results;
 418                 }
 419
 420         } else {
 421                 struct berval nrdn;
 422
 423                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 424                 if (pdn.bv_len) {
 425                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 426                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 427                 } else {
 428                         nrdn = op->ora_e->e_nname;
 429                 }
 430
 431                 /* Use the thread locker here, outside the txn */
 432                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, rlocker, &lock );
 433
 434                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 435                         rs->sr_text = "txn_commit failed";
 436                 } else {
 437                         rs->sr_err = LDAP_SUCCESS;
 438                 }
 439         }
 440
 441         ltid = NULL;
 442         op->o_private = NULL;
 443
 444         if ( rs->sr_err != LDAP_SUCCESS ) {
 445                 Debug( LDAP_DEBUG_TRACE,
 446                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 447                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 448                 rs->sr_err = LDAP_OTHER;
 449                 goto return_results;
 450         }
 451
 452         Debug(LDAP_DEBUG_TRACE,
 453                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 454                 op->o_noop ? " (no-op)" : "",
 455                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 456
 457         rs->sr_text = NULL;
 458         if( num_ctrls ) rs->sr_ctrls = ctrls;
 459
 460 return_results:
 461         success = rs->sr_err;
 462         send_ldap_result( op, rs );
 463         slap_graduate_commit_csn( op );
 464
 465         if( ltid != NULL ) {
 466                 TXN_ABORT( ltid );
 467         }
 468         op->o_private = NULL;
 469
 470         if( success == LDAP_SUCCESS ) {
 471                 /* We own the entry now, and it can be purged at will
 472                  * Check to make sure it's the same entry we entered with.
 473                  * Possibly a callback may have mucked with it, although
 474                  * in general callbacks should treat the entry as read-only.
 475                  */
 476                 bdb_cache_return_entry_r( bdb, oe, &lock );
 477                 if ( op->ora_e == oe )
 478                         op->ora_e = NULL;
 479
 480                 if ( bdb->bi_txn_cp_kbyte ) {
 481                         TXN_CHECKPOINT( bdb->bi_dbenv,
 482                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 483                 }
 484         }
 485
 486         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 487                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 488                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 489         }
 490
 491         return rs->sr_err;
 492 }