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 2000-2006 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         u_int32_t       locker = 0, rlocker = 0;
  39         DB_LOCK         lock;
  40
  41         int             num_retries = 0;
  42
  43         LDAPControl **postread_ctrl = NULL;
  44         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  45         int num_ctrls = 0;
  46
  47 #ifdef LDAP_X_TXN
  48         int settle = 0;
  49 #endif
  50
  51         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  52                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  53
  54 #ifdef LDAP_X_TXN
  55         if( op->o_txnSpec ) {
  56                 /* acquire connection lock */
  57                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  58                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
  59                         rs->sr_text = "invalid transaction identifier";
  60                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
  61                         goto txnReturn;
  62                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
  63                         settle=1;
  64                         goto txnReturn;
  65                 }
  66
  67                 if( op->o_conn->c_txn_backend == NULL ) {
  68                         op->o_conn->c_txn_backend = op->o_bd;
  69
  70                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
  71                         rs->sr_text = "transaction cannot span multiple database contexts";
  72                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
  73                         goto txnReturn;
  74                 }
  75
  76                 /* insert operation into transaction */
  77
  78                 rs->sr_text = "transaction specified";
  79                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
  80
  81 txnReturn:
  82                 /* release connection lock */
  83                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
  84
  85                 if( !settle ) {
  86                         send_ldap_result( op, rs );
  87                         return rs->sr_err;
  88                 }
  89         }
  90 #endif
  91
  92         ctrls[num_ctrls] = 0;
  93
  94
  95         /* check entry's schema */
  96         rs->sr_err = entry_schema_check( op, op->oq_add.rs_e, NULL,
  97                 get_relax(op), 1, &rs->sr_text, textbuf, textlen );
  98         if ( rs->sr_err != LDAP_SUCCESS ) {
  99                 Debug( LDAP_DEBUG_TRACE,
 100                         LDAP_XSTRING(bdb_add) ": entry failed schema check: "
 101                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
 102                 goto return_results;
 103         }
 104
 105         /* add opattrs to shadow as well, only missing attrs will actually
 106          * be added; helps compatibility with older OL versions */
 107         rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
 108         if ( rs->sr_err != LDAP_SUCCESS ) {
 109                 Debug( LDAP_DEBUG_TRACE,
 110                         LDAP_XSTRING(bdb_add) ": entry failed op attrs add: "
 111                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
 112                 goto return_results;
 113         }
 114
 115         subentry = is_entry_subentry( op->oq_add.rs_e );
 116
 117         /*
 118          * acquire an ID outside of the operation transaction
 119          * to avoid serializing adds.
 120          */
 121         rs->sr_err = bdb_next_id( op->o_bd, NULL, &op->oq_add.rs_e->e_id );
 122         if( rs->sr_err != 0 ) {
 123                 Debug( LDAP_DEBUG_TRACE,
 124                         LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 125                         rs->sr_err, 0, 0 );
 126                 rs->sr_err = LDAP_OTHER;
 127                 rs->sr_text = "internal error";
 128                 goto return_results;
 129         }
 130
 131         /* Get our thread locker ID */
 132         rs->sr_err = LOCK_ID( bdb->bi_dbenv, &rlocker );
 133
 134         if( 0 ) {
 135 retry:  /* transaction retry */
 136                 if( p ) {
 137                         /* free parent and reader lock */
 138                         if ( p != (Entry *)&slap_entry_root ) {
 139                                 bdb_unlocked_cache_return_entry_r( bdb, p );
 140                         }
 141                         p = NULL;
 142                 }
 143                 rs->sr_err = TXN_ABORT( ltid );
 144                 ltid = NULL;
 145                 op->o_private = NULL;
 146                 op->o_do_not_cache = opinfo.boi_acl_cache;
 147                 if( rs->sr_err != 0 ) {
 148                         rs->sr_err = LDAP_OTHER;
 149                         rs->sr_text = "internal error";
 150                         goto return_results;
 151                 }
 152                 if ( op->o_abandon ) {
 153                         rs->sr_err = SLAPD_ABANDON;
 154                         goto return_results;
 155                 }
 156                 bdb_trans_backoff( ++num_retries );
 157         }
 158
 159         /* begin transaction */
 160         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 161                 bdb->bi_db_opflags );
 162         rs->sr_text = NULL;
 163         if( rs->sr_err != 0 ) {
 164                 Debug( LDAP_DEBUG_TRACE,
 165                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 166                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 167                 rs->sr_err = LDAP_OTHER;
 168                 rs->sr_text = "internal error";
 169                 goto return_results;
 170         }
 171
 172         locker = TXN_ID ( ltid );
 173
 174         opinfo.boi_bdb = op->o_bd;
 175         opinfo.boi_txn = ltid;
 176         opinfo.boi_locker = locker;
 177         opinfo.boi_err = 0;
 178         opinfo.boi_acl_cache = op->o_do_not_cache;
 179         op->o_private = &opinfo;
 180
 181         /*
 182          * Get the parent dn and see if the corresponding entry exists.
 183          */
 184         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 185                 pdn = slap_empty_bv;
 186         } else {
 187                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 188         }
 189
 190         /* get entry or parent */
 191         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 192                 1, locker, &lock );
 193         switch( rs->sr_err ) {
 194         case 0:
 195                 rs->sr_err = LDAP_ALREADY_EXISTS;
 196                 goto return_results;
 197         case DB_NOTFOUND:
 198                 break;
 199         case DB_LOCK_DEADLOCK:
 200         case DB_LOCK_NOTGRANTED:
 201                 goto retry;
 202         case LDAP_BUSY:
 203                 rs->sr_text = "ldap server busy";
 204                 goto return_results;
 205         default:
 206                 rs->sr_err = LDAP_OTHER;
 207                 rs->sr_text = "internal error";
 208                 goto return_results;
 209         }
 210
 211         p = ei->bei_e;
 212         if ( !p )
 213                 p = (Entry *)&slap_entry_root;
 214
 215         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 216                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 217                         op->o_tmpmemctx );
 218                 rs->sr_ref = is_entry_referral( p )
 219                         ? get_entry_referrals( op, p )
 220                         : NULL;
 221                 bdb_unlocked_cache_return_entry_r( bdb, p );
 222                 p = NULL;
 223                 Debug( LDAP_DEBUG_TRACE,
 224                         LDAP_XSTRING(bdb_add) ": parent "
 225                         "does not exist\n", 0, 0, 0 );
 226
 227                 rs->sr_err = LDAP_REFERRAL;
 228                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 229                 goto return_results;
 230         }
 231
 232         rs->sr_err = access_allowed( op, p,
 233                 children, NULL, ACL_WADD, NULL );
 234
 235         if ( ! rs->sr_err ) {
 236                 switch( opinfo.boi_err ) {
 237                 case DB_LOCK_DEADLOCK:
 238                 case DB_LOCK_NOTGRANTED:
 239                         goto retry;
 240                 }
 241
 242                 Debug( LDAP_DEBUG_TRACE,
 243                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 244                         0, 0, 0 );
 245                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 246                 rs->sr_text = "no write access to parent";
 247                 goto return_results;;
 248         }
 249
 250         if ( p != (Entry *)&slap_entry_root ) {
 251                 if ( is_entry_subentry( p ) ) {
 252                         /* parent is a subentry, don't allow add */
 253                         Debug( LDAP_DEBUG_TRACE,
 254                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 255                                 0, 0, 0 );
 256                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 257                         rs->sr_text = "parent is a subentry";
 258                         goto return_results;;
 259                 }
 260
 261                 if ( is_entry_alias( p ) ) {
 262                         /* parent is an alias, don't allow add */
 263                         Debug( LDAP_DEBUG_TRACE,
 264                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 265                                 0, 0, 0 );
 266                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 267                         rs->sr_text = "parent is an alias";
 268                         goto return_results;;
 269                 }
 270
 271                 if ( is_entry_referral( p ) ) {
 272                         /* parent is a referral, don't allow add */
 273                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 274                                 op->o_tmpmemctx );
 275                         rs->sr_ref = get_entry_referrals( op, p );
 276                         bdb_unlocked_cache_return_entry_r( bdb, p );
 277                         p = NULL;
 278                         Debug( LDAP_DEBUG_TRACE,
 279                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 280                                 0, 0, 0 );
 281
 282                         rs->sr_err = LDAP_REFERRAL;
 283                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 284                         goto return_results;
 285                 }
 286
 287                 if ( subentry ) {
 288                         /* FIXME: */
 289                         /* parent must be an administrative point of the required kind */
 290                 }
 291         }
 292
 293         /* free parent and reader lock */
 294         if ( p != (Entry *)&slap_entry_root ) {
 295                 bdb_unlocked_cache_return_entry_r( bdb, p );
 296         }
 297         p = NULL;
 298
 299         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 300                 entry, NULL, ACL_WADD, NULL );
 301
 302         if ( ! rs->sr_err ) {
 303                 switch( opinfo.boi_err ) {
 304                 case DB_LOCK_DEADLOCK:
 305                 case DB_LOCK_NOTGRANTED:
 306                         goto retry;
 307                 }
 308
 309                 Debug( LDAP_DEBUG_TRACE,
 310                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 311                         0, 0, 0 );
 312                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 313                 rs->sr_text = "no write access to entry";
 314                 goto return_results;;
 315         }
 316
 317         /* nested transaction */
 318         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 319                 bdb->bi_db_opflags );
 320         rs->sr_text = NULL;
 321         if( rs->sr_err != 0 ) {
 322                 Debug( LDAP_DEBUG_TRACE,
 323                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 324                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 325                 rs->sr_err = LDAP_OTHER;
 326                 rs->sr_text = "internal error";
 327                 goto return_results;
 328         }
 329
 330         /* dn2id index */
 331         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 332         if ( rs->sr_err != 0 ) {
 333                 Debug( LDAP_DEBUG_TRACE,
 334                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 335                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 336
 337                 switch( rs->sr_err ) {
 338                 case DB_LOCK_DEADLOCK:
 339                 case DB_LOCK_NOTGRANTED:
 340                         goto retry;
 341                 case DB_KEYEXIST:
 342                         rs->sr_err = LDAP_ALREADY_EXISTS;
 343                         break;
 344                 default:
 345                         rs->sr_err = LDAP_OTHER;
 346                 }
 347                 goto return_results;
 348         }
 349
 350         /* attribute indexes */
 351         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 352         if ( rs->sr_err != LDAP_SUCCESS ) {
 353                 Debug( LDAP_DEBUG_TRACE,
 354                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 355                         0, 0, 0 );
 356                 switch( rs->sr_err ) {
 357                 case DB_LOCK_DEADLOCK:
 358                 case DB_LOCK_NOTGRANTED:
 359                         goto retry;
 360                 default:
 361                         rs->sr_err = LDAP_OTHER;
 362                 }
 363                 rs->sr_text = "index generation failed";
 364                 goto return_results;
 365         }
 366
 367         /* id2entry index */
 368         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 369         if ( rs->sr_err != 0 ) {
 370                 Debug( LDAP_DEBUG_TRACE,
 371                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 372                         0, 0, 0 );
 373                 switch( rs->sr_err ) {
 374                 case DB_LOCK_DEADLOCK:
 375                 case DB_LOCK_NOTGRANTED:
 376                         goto retry;
 377                 default:
 378                         rs->sr_err = LDAP_OTHER;
 379                 }
 380                 rs->sr_text = "entry store failed";
 381                 goto return_results;
 382         }
 383
 384         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 385                 rs->sr_err = LDAP_OTHER;
 386                 rs->sr_text = "txn_commit(2) failed";
 387                 goto return_results;
 388         }
 389
 390         /* post-read */
 391         if( op->o_postread ) {
 392                 if( postread_ctrl == NULL ) {
 393                         postread_ctrl = &ctrls[num_ctrls++];
 394                         ctrls[num_ctrls] = NULL;
 395                 }
 396                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 397                         &slap_post_read_bv, postread_ctrl ) )
 398                 {
 399                         Debug( LDAP_DEBUG_TRACE,
 400                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 401                                 "failed!\n", 0, 0, 0 );
 402                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 403                                 /* FIXME: is it correct to abort
 404                                  * operation if control fails? */
 405                                 goto return_results;
 406                         }
 407                 }
 408         }
 409
 410         if ( op->o_noop ) {
 411                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 412                         rs->sr_text = "txn_abort (no-op) failed";
 413                 } else {
 414                         rs->sr_err = LDAP_X_NO_OPERATION;
 415                         ltid = NULL;
 416                         goto return_results;
 417                 }
 418
 419         } else {
 420                 struct berval nrdn;
 421
 422                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 423                 if (pdn.bv_len) {
 424                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 425                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 426                 } else {
 427                         nrdn = op->ora_e->e_nname;
 428                 }
 429
 430                 /* Use the thread locker here, outside the txn */
 431                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, rlocker, &lock );
 432
 433                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 434                         rs->sr_text = "txn_commit failed";
 435                 } else {
 436                         rs->sr_err = LDAP_SUCCESS;
 437                 }
 438         }
 439
 440         ltid = NULL;
 441         op->o_private = NULL;
 442
 443         if ( rs->sr_err != LDAP_SUCCESS ) {
 444                 Debug( LDAP_DEBUG_TRACE,
 445                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 446                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 447                 rs->sr_err = LDAP_OTHER;
 448                 goto return_results;
 449         }
 450
 451         Debug(LDAP_DEBUG_TRACE,
 452                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 453                 op->o_noop ? " (no-op)" : "",
 454                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 455
 456         rs->sr_text = NULL;
 457         if( num_ctrls ) rs->sr_ctrls = ctrls;
 458
 459 return_results:
 460         send_ldap_result( op, rs );
 461         slap_graduate_commit_csn( op );
 462
 463         if( ltid != NULL ) {
 464                 TXN_ABORT( ltid );
 465         }
 466         op->o_private = NULL;
 467
 468         if( rs->sr_err == LDAP_SUCCESS ) {
 469                 /* We own the entry now, and it can be purged at will
 470                  * Check to make sure it's the same entry we entered with.
 471                  * Possibly a callback may have mucked with it, although
 472                  * in general callbacks should treat the entry as read-only.
 473                  */
 474                 bdb_cache_return_entry_r( bdb, oe, &lock );
 475                 if ( op->ora_e == oe )
 476                         op->ora_e = NULL;
 477
 478                 if ( bdb->bi_txn_cp_kbyte ) {
 479                         TXN_CHECKPOINT( bdb->bi_dbenv,
 480                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 481                 }
 482         }
 483
 484         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 485                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 486                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 487         }
 488
 489         return rs->sr_err;
 490 }