external/bsd/openldap/dist/servers/slapd/back-bdb/add.c

   1 /* add.c - ldap BerkeleyDB back-end add routine */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/back-bdb/add.c,v 1.152.2.10 2008/05/01 21:39:35 quanah Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2008 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         ID eid = NOID;
  37         struct bdb_op_info opinfo = {0};
  38         int subentry;
  39         BDB_LOCKER      locker = 0, rlocker = 0;
  40         DB_LOCK         lock;
  41
  42         int             num_retries = 0;
  43         int             success;
  44
  45         LDAPControl **postread_ctrl = NULL;
  46         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  47         int num_ctrls = 0;
  48
  49 #ifdef LDAP_X_TXN
  50         int settle = 0;
  51 #endif
  52
  53         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  54                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  55
  56 #ifdef LDAP_X_TXN
  57         if( op->o_txnSpec ) {
  58                 /* acquire connection lock */
  59                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  60                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
  61                         rs->sr_text = "invalid transaction identifier";
  62                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
  63                         goto txnReturn;
  64                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
  65                         settle=1;
  66                         goto txnReturn;
  67                 }
  68
  69                 if( op->o_conn->c_txn_backend == NULL ) {
  70                         op->o_conn->c_txn_backend = op->o_bd;
  71
  72                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
  73                         rs->sr_text = "transaction cannot span multiple database contexts";
  74                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
  75                         goto txnReturn;
  76                 }
  77
  78                 /* insert operation into transaction */
  79
  80                 rs->sr_text = "transaction specified";
  81                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
  82
  83 txnReturn:
  84                 /* release connection lock */
  85                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
  86
  87                 if( !settle ) {
  88                         send_ldap_result( op, rs );
  89                         return rs->sr_err;
  90                 }
  91         }
  92 #endif
  93
  94         ctrls[num_ctrls] = 0;
  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         /* Get our thread locker ID */
 119         rs->sr_err = LOCK_ID( bdb->bi_dbenv, &rlocker );
 120
 121         if( 0 ) {
 122 retry:  /* transaction retry */
 123                 if( p ) {
 124                         /* free parent and reader lock */
 125                         if ( p != (Entry *)&slap_entry_root ) {
 126                                 bdb_unlocked_cache_return_entry_r( bdb, p );
 127                         }
 128                         p = NULL;
 129                 }
 130                 rs->sr_err = TXN_ABORT( ltid );
 131                 ltid = NULL;
 132                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 133                 opinfo.boi_oe.oe_key = NULL;
 134                 op->o_do_not_cache = opinfo.boi_acl_cache;
 135                 if( rs->sr_err != 0 ) {
 136                         rs->sr_err = LDAP_OTHER;
 137                         rs->sr_text = "internal error";
 138                         goto return_results;
 139                 }
 140                 if ( op->o_abandon ) {
 141                         rs->sr_err = SLAPD_ABANDON;
 142                         goto return_results;
 143                 }
 144                 bdb_trans_backoff( ++num_retries );
 145         }
 146
 147         /* begin transaction */
 148         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 149                 bdb->bi_db_opflags );
 150         rs->sr_text = NULL;
 151         if( rs->sr_err != 0 ) {
 152                 Debug( LDAP_DEBUG_TRACE,
 153                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 154                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 155                 rs->sr_err = LDAP_OTHER;
 156                 rs->sr_text = "internal error";
 157                 goto return_results;
 158         }
 159
 160         locker = TXN_ID ( ltid );
 161
 162         opinfo.boi_oe.oe_key = bdb;
 163         opinfo.boi_txn = ltid;
 164         opinfo.boi_err = 0;
 165         opinfo.boi_acl_cache = op->o_do_not_cache;
 166         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 167
 168         /*
 169          * Get the parent dn and see if the corresponding entry exists.
 170          */
 171         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 172                 pdn = slap_empty_bv;
 173         } else {
 174                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 175         }
 176
 177         /* get entry or parent */
 178         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 179                 1, locker, &lock );
 180         switch( rs->sr_err ) {
 181         case 0:
 182                 rs->sr_err = LDAP_ALREADY_EXISTS;
 183                 goto return_results;
 184         case DB_NOTFOUND:
 185                 break;
 186         case DB_LOCK_DEADLOCK:
 187         case DB_LOCK_NOTGRANTED:
 188                 goto retry;
 189         case LDAP_BUSY:
 190                 rs->sr_text = "ldap server busy";
 191                 goto return_results;
 192         default:
 193                 rs->sr_err = LDAP_OTHER;
 194                 rs->sr_text = "internal error";
 195                 goto return_results;
 196         }
 197
 198         p = ei->bei_e;
 199         if ( !p )
 200                 p = (Entry *)&slap_entry_root;
 201
 202         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 203                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 204                         op->o_tmpmemctx );
 205                 rs->sr_ref = is_entry_referral( p )
 206                         ? get_entry_referrals( op, p )
 207                         : NULL;
 208                 bdb_unlocked_cache_return_entry_r( bdb, p );
 209                 p = NULL;
 210                 Debug( LDAP_DEBUG_TRACE,
 211                         LDAP_XSTRING(bdb_add) ": parent "
 212                         "does not exist\n", 0, 0, 0 );
 213
 214                 rs->sr_err = LDAP_REFERRAL;
 215                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 216                 goto return_results;
 217         }
 218
 219         rs->sr_err = access_allowed( op, p,
 220                 children, NULL, ACL_WADD, NULL );
 221
 222         if ( ! rs->sr_err ) {
 223                 switch( opinfo.boi_err ) {
 224                 case DB_LOCK_DEADLOCK:
 225                 case DB_LOCK_NOTGRANTED:
 226                         goto retry;
 227                 }
 228
 229                 Debug( LDAP_DEBUG_TRACE,
 230                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 231                         0, 0, 0 );
 232                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 233                 rs->sr_text = "no write access to parent";
 234                 goto return_results;;
 235         }
 236
 237         if ( p != (Entry *)&slap_entry_root ) {
 238                 if ( is_entry_subentry( p ) ) {
 239                         /* parent is a subentry, don't allow add */
 240                         Debug( LDAP_DEBUG_TRACE,
 241                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 242                                 0, 0, 0 );
 243                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 244                         rs->sr_text = "parent is a subentry";
 245                         goto return_results;;
 246                 }
 247
 248                 if ( is_entry_alias( p ) ) {
 249                         /* parent is an alias, don't allow add */
 250                         Debug( LDAP_DEBUG_TRACE,
 251                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 252                                 0, 0, 0 );
 253                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 254                         rs->sr_text = "parent is an alias";
 255                         goto return_results;;
 256                 }
 257
 258                 if ( is_entry_referral( p ) ) {
 259                         /* parent is a referral, don't allow add */
 260                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 261                                 op->o_tmpmemctx );
 262                         rs->sr_ref = get_entry_referrals( op, p );
 263                         bdb_unlocked_cache_return_entry_r( bdb, p );
 264                         p = NULL;
 265                         Debug( LDAP_DEBUG_TRACE,
 266                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 267                                 0, 0, 0 );
 268
 269                         rs->sr_err = LDAP_REFERRAL;
 270                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 271                         goto return_results;
 272                 }
 273
 274         }
 275
 276         if ( subentry ) {
 277                 /* FIXME: */
 278                 /* parent must be an administrative point of the required kind */
 279         }
 280
 281         /* free parent and reader lock */
 282         if ( p != (Entry *)&slap_entry_root ) {
 283                 bdb_unlocked_cache_return_entry_r( bdb, p );
 284         }
 285         p = NULL;
 286
 287         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 288                 entry, NULL, ACL_WADD, NULL );
 289
 290         if ( ! rs->sr_err ) {
 291                 switch( opinfo.boi_err ) {
 292                 case DB_LOCK_DEADLOCK:
 293                 case DB_LOCK_NOTGRANTED:
 294                         goto retry;
 295                 }
 296
 297                 Debug( LDAP_DEBUG_TRACE,
 298                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 299                         0, 0, 0 );
 300                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 301                 rs->sr_text = "no write access to entry";
 302                 goto return_results;;
 303         }
 304
 305         if ( eid == NOID ) {
 306                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 307                 if( rs->sr_err != 0 ) {
 308                         Debug( LDAP_DEBUG_TRACE,
 309                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 310                                 rs->sr_err, 0, 0 );
 311                         rs->sr_err = LDAP_OTHER;
 312                         rs->sr_text = "internal error";
 313                         goto return_results;
 314                 }
 315                 op->oq_add.rs_e->e_id = eid;
 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         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 443         opinfo.boi_oe.oe_key = NULL;
 444
 445         if ( rs->sr_err != LDAP_SUCCESS ) {
 446                 Debug( LDAP_DEBUG_TRACE,
 447                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 448                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 449                 rs->sr_err = LDAP_OTHER;
 450                 goto return_results;
 451         }
 452
 453         Debug(LDAP_DEBUG_TRACE,
 454                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 455                 op->o_noop ? " (no-op)" : "",
 456                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 457
 458         rs->sr_text = NULL;
 459         if( num_ctrls ) rs->sr_ctrls = ctrls;
 460
 461 return_results:
 462         success = rs->sr_err;
 463         send_ldap_result( op, rs );
 464         slap_graduate_commit_csn( op );
 465
 466         if( ltid != NULL ) {
 467                 TXN_ABORT( ltid );
 468         }
 469         if ( opinfo.boi_oe.oe_key ) {
 470                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 471         }
 472
 473         if( success == LDAP_SUCCESS ) {
 474                 /* We own the entry now, and it can be purged at will
 475                  * Check to make sure it's the same entry we entered with.
 476                  * Possibly a callback may have mucked with it, although
 477                  * in general callbacks should treat the entry as read-only.
 478                  */
 479                 bdb_cache_return_entry_r( bdb, oe, &lock );
 480                 if ( op->ora_e == oe )
 481                         op->ora_e = NULL;
 482
 483                 if ( bdb->bi_txn_cp_kbyte ) {
 484                         TXN_CHECKPOINT( bdb->bi_dbenv,
 485                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 486                 }
 487         }
 488
 489         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 490                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 491                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 492         }
 493
 494         return rs->sr_err;
 495 }