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 2000-2005 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;
  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 #ifdef BDB_SUBENTRIES
  38         int subentry;
  39 #endif
  40         u_int32_t       locker = 0;
  41         DB_LOCK         lock;
  42
  43         int             num_retries = 0;
  44
  45         LDAPControl **postread_ctrl = NULL;
  46         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  47         int num_ctrls = 0;
  48
  49         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  50                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  51
  52         ctrls[num_ctrls] = 0;
  53
  54         slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
  55
  56         /* check entry's schema */
  57         rs->sr_err = entry_schema_check( op, op->oq_add.rs_e, NULL,
  58                 get_manageDIT(op), &rs->sr_text, textbuf, textlen );
  59         if ( rs->sr_err != LDAP_SUCCESS ) {
  60                 Debug( LDAP_DEBUG_TRACE,
  61                         LDAP_XSTRING(bdb_add) ": entry failed schema check: "
  62                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
  63                 goto return_results;
  64         }
  65
  66 #ifdef BDB_SUBENTRIES
  67         subentry = is_entry_subentry( op->oq_add.rs_e );
  68 #endif
  69
  70         /*
  71          * acquire an ID outside of the operation transaction
  72          * to avoid serializing adds.
  73          */
  74         rs->sr_err = bdb_next_id( op->o_bd, NULL, &op->oq_add.rs_e->e_id );
  75         if( rs->sr_err != 0 ) {
  76                 Debug( LDAP_DEBUG_TRACE,
  77                         LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
  78                         rs->sr_err, 0, 0 );
  79                 rs->sr_err = LDAP_OTHER;
  80                 rs->sr_text = "internal error";
  81                 goto return_results;
  82         }
  83
  84         if( 0 ) {
  85 retry:  /* transaction retry */
  86                 if( p ) {
  87                         /* free parent and reader lock */
  88                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
  89                         p = NULL;
  90                 }
  91                 rs->sr_err = TXN_ABORT( ltid );
  92                 ltid = NULL;
  93                 op->o_private = NULL;
  94                 op->o_do_not_cache = opinfo.boi_acl_cache;
  95                 if( rs->sr_err != 0 ) {
  96                         rs->sr_err = LDAP_OTHER;
  97                         rs->sr_text = "internal error";
  98                         goto return_results;
  99                 }
 100                 if ( op->o_abandon ) {
 101                         rs->sr_err = SLAPD_ABANDON;
 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                         LDAP_XSTRING(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,
 171                                 LDAP_XSTRING(bdb_add) ": parent "
 172                                 "does not exist\n", 0, 0, 0 );
 173
 174                         rs->sr_err = LDAP_REFERRAL;
 175                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 176                         goto return_results;
 177                 }
 178
 179                 rs->sr_err = access_allowed( op, p,
 180                         children, NULL, ACL_WADD, NULL );
 181
 182                 if ( ! rs->sr_err ) {
 183                         switch( opinfo.boi_err ) {
 184                         case DB_LOCK_DEADLOCK:
 185                         case DB_LOCK_NOTGRANTED:
 186                                 goto retry;
 187                         }
 188
 189                         Debug( LDAP_DEBUG_TRACE,
 190                                 LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 191                                 0, 0, 0 );
 192                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 193                         rs->sr_text = "no write access to parent";
 194                         goto return_results;;
 195                 }
 196
 197 #ifdef BDB_SUBENTRIES
 198                 if ( is_entry_subentry( p ) ) {
 199                         /* parent is a subentry, don't allow add */
 200                         Debug( LDAP_DEBUG_TRACE,
 201                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 202                                 0, 0, 0 );
 203                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 204                         rs->sr_text = "parent is a subentry";
 205                         goto return_results;;
 206                 }
 207 #endif
 208                 if ( is_entry_alias( p ) ) {
 209                         /* parent is an alias, don't allow add */
 210                         Debug( LDAP_DEBUG_TRACE,
 211                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 212                                 0, 0, 0 );
 213                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 214                         rs->sr_text = "parent is an alias";
 215                         goto return_results;;
 216                 }
 217
 218                 if ( is_entry_referral( p ) ) {
 219                         /* parent is a referral, don't allow add */
 220                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 221                                 op->o_tmpmemctx );
 222                         rs->sr_ref = get_entry_referrals( op, p );
 223                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 224                         p = NULL;
 225                         Debug( LDAP_DEBUG_TRACE,
 226                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 227                                 0, 0, 0 );
 228
 229                         rs->sr_err = LDAP_REFERRAL;
 230                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 231                         goto return_results;
 232                 }
 233
 234 #ifdef BDB_SUBENTRIES
 235                 if ( subentry ) {
 236                         /* FIXME: */
 237                         /* parent must be an administrative point of the required kind */
 238                 }
 239 #endif
 240
 241                 /* free parent and reader lock */
 242                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 243                 p = NULL;
 244
 245         } else {
 246                 /*
 247                  * no parent!
 248                  *  if not attempting to add entry at suffix or with parent ""
 249                  */
 250                 if ((( !be_isroot( op ) && !be_shadow_update(op) )
 251                         || pdn.bv_len > 0 ) && !is_entry_glue( op->oq_add.rs_e ))
 252                 {
 253                         Debug( LDAP_DEBUG_TRACE,
 254                                 LDAP_XSTRING(bdb_add) ": %s denied\n",
 255                                 pdn.bv_len == 0 ? "suffix" : "entry at root",
 256                                 0, 0 );
 257                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 258                         goto return_results;
 259                 }
 260         }
 261
 262         if ( get_assert( op ) &&
 263                 ( test_filter( op, op->oq_add.rs_e, get_assertion( op ))
 264                         != LDAP_COMPARE_TRUE ))
 265         {
 266                 rs->sr_err = LDAP_ASSERTION_FAILED;
 267                 goto return_results;
 268         }
 269
 270         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 271                 entry, NULL, ACL_WADD, NULL );
 272
 273         if ( ! rs->sr_err ) {
 274                 switch( opinfo.boi_err ) {
 275                 case DB_LOCK_DEADLOCK:
 276                 case DB_LOCK_NOTGRANTED:
 277                         goto retry;
 278                 }
 279
 280                 Debug( LDAP_DEBUG_TRACE,
 281                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 282                         0, 0, 0 );
 283                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 284                 rs->sr_text = "no write access to entry";
 285                 goto return_results;;
 286         }
 287
 288         /* nested transaction */
 289         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 290                 bdb->bi_db_opflags );
 291         rs->sr_text = NULL;
 292         if( rs->sr_err != 0 ) {
 293                 Debug( LDAP_DEBUG_TRACE,
 294                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 295                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 296                 rs->sr_err = LDAP_OTHER;
 297                 rs->sr_text = "internal error";
 298                 goto return_results;
 299         }
 300
 301         /* dn2id index */
 302         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 303         if ( rs->sr_err != 0 ) {
 304                 Debug( LDAP_DEBUG_TRACE,
 305                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 306                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 307
 308                 switch( rs->sr_err ) {
 309                 case DB_LOCK_DEADLOCK:
 310                 case DB_LOCK_NOTGRANTED:
 311                         goto retry;
 312                 case DB_KEYEXIST:
 313                         rs->sr_err = LDAP_ALREADY_EXISTS;
 314                         break;
 315                 default:
 316                         rs->sr_err = LDAP_OTHER;
 317                 }
 318                 goto return_results;
 319         }
 320
 321         /* id2entry index */
 322         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 323         if ( rs->sr_err != 0 ) {
 324                 Debug( LDAP_DEBUG_TRACE,
 325                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 326                         0, 0, 0 );
 327                 switch( rs->sr_err ) {
 328                 case DB_LOCK_DEADLOCK:
 329                 case DB_LOCK_NOTGRANTED:
 330                         goto retry;
 331                 default:
 332                         rs->sr_err = LDAP_OTHER;
 333                 }
 334                 rs->sr_text = "entry store failed";
 335                 goto return_results;
 336         }
 337
 338         /* attribute indexes */
 339         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 340         if ( rs->sr_err != LDAP_SUCCESS ) {
 341                 Debug( LDAP_DEBUG_TRACE,
 342                         LDAP_XSTRING(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         /* post-read */
 361         if( op->o_postread ) {
 362                 if( postread_ctrl == NULL ) {
 363                         postread_ctrl = &ctrls[num_ctrls++];
 364                         ctrls[num_ctrls] = NULL;
 365                 }
 366                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 367                         &slap_post_read_bv, postread_ctrl ) )
 368                 {
 369                         Debug( LDAP_DEBUG_TRACE,
 370                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 371                                 "failed!\n", 0, 0, 0 );
 372                         goto return_results;
 373                 }
 374         }
 375
 376         if ( op->o_noop ) {
 377                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 378                         rs->sr_text = "txn_abort (no-op) failed";
 379                 } else {
 380                         rs->sr_err = LDAP_X_NO_OPERATION;
 381                         ltid = NULL;
 382                         goto return_results;
 383                 }
 384
 385         } else {
 386                 struct berval nrdn;
 387                 Entry *e = entry_dup( op->ora_e );
 388
 389                 if (pdn.bv_len) {
 390                         nrdn.bv_val = e->e_nname.bv_val;
 391                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 392                 } else {
 393                         nrdn = e->e_nname;
 394                 }
 395
 396                 bdb_cache_add( bdb, ei, e, &nrdn, locker );
 397
 398                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 399                         rs->sr_text = "txn_commit failed";
 400                 } else {
 401                         rs->sr_err = LDAP_SUCCESS;
 402                 }
 403         }
 404
 405         ltid = NULL;
 406         op->o_private = NULL;
 407
 408         if ( rs->sr_err != LDAP_SUCCESS ) {
 409                 Debug( LDAP_DEBUG_TRACE,
 410                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 411                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 412                 rs->sr_err = LDAP_OTHER;
 413                 goto return_results;
 414         }
 415
 416         Debug(LDAP_DEBUG_TRACE,
 417                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 418                 op->o_noop ? " (no-op)" : "",
 419                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 420
 421         rs->sr_text = NULL;
 422         if( num_ctrls ) rs->sr_ctrls = ctrls;
 423
 424 return_results:
 425         send_ldap_result( op, rs );
 426         if ( !SLAP_SHADOW( op->o_bd ))
 427                 slap_graduate_commit_csn( op );
 428
 429         if( ltid != NULL ) {
 430                 TXN_ABORT( ltid );
 431         }
 432         op->o_private = NULL;
 433
 434         if( postread_ctrl != NULL ) {
 435                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 436                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 437         }
 438
 439         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 440                 ldap_pvt_thread_yield();
 441                 TXN_CHECKPOINT( bdb->bi_dbenv,
 442                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 443         }
 444         return rs->sr_err;
 445 }