+
+/* return LDAP_SUCCESS IFF we can retrieve the specified entry.
+ */
+int bdb_entry_get(
+ Operation *op,
+ struct berval *ndn,
+ ObjectClass *oc,
+ AttributeDescription *at,
+ int rw,
+ Entry **ent )
+{
+ struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
+ struct bdb_op_info *boi = NULL;
+ DB_TXN *txn = NULL;
+ Entry *e = NULL;
+ EntryInfo *ei;
+ int rc;
+ const char *at_name = at ? at->ad_cname.bv_val : "(null)";
+
+ u_int32_t locker = 0;
+ DB_LOCK lock;
+ int free_lock_id = 0;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, ARGS,
+ "bdb_entry_get: ndn: \"%s\"\n", ndn->bv_val, 0, 0 );
+ LDAP_LOG( BACK_BDB, ARGS,
+ "bdb_entry_get: oc: \"%s\", at: \"%s\"\n",
+ oc ? oc->soc_cname.bv_val : "(null)", at_name, 0);
+#else
+ Debug( LDAP_DEBUG_ARGS,
+ "=> bdb_entry_get: ndn: \"%s\"\n", ndn->bv_val, 0, 0 );
+ Debug( LDAP_DEBUG_ARGS,
+ "=> bdb_entry_get: oc: \"%s\", at: \"%s\"\n",
+ oc ? oc->soc_cname.bv_val : "(null)", at_name, 0);
+#endif
+
+ if( op ) boi = (struct bdb_op_info *) op->o_private;
+ if( boi != NULL && op->o_bd == boi->boi_bdb ) {
+ txn = boi->boi_txn;
+ locker = boi->boi_locker;
+ }
+
+ if ( txn != NULL ) {
+ locker = TXN_ID ( txn );
+ } else if ( !locker ) {
+ rc = LOCK_ID ( bdb->bi_dbenv, &locker );
+ free_lock_id = 1;
+ switch(rc) {
+ case 0:
+ break;
+ default:
+ return LDAP_OTHER;
+ }
+ }
+
+dn2entry_retry:
+ /* can we find entry */
+ rc = bdb_dn2entry( op, txn, ndn, &ei, 0, locker, &lock );
+ switch( rc ) {
+ case DB_NOTFOUND:
+ case 0:
+ break;
+ case DB_LOCK_DEADLOCK:
+ case DB_LOCK_NOTGRANTED:
+ /* the txn must abort and retry */
+ if ( txn ) {
+ boi->boi_err = rc;
+ return LDAP_BUSY;
+ }
+ ldap_pvt_thread_yield();
+ goto dn2entry_retry;
+ default:
+ if ( boi ) boi->boi_err = rc;
+ if ( free_lock_id ) {
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ }
+ return (rc != LDAP_BUSY) ? LDAP_OTHER : LDAP_BUSY;
+ }
+ if (ei) e = ei->bei_e;
+ if (e == NULL) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: cannot find entry (%s)\n",
+ ndn->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> bdb_entry_get: cannot find entry: \"%s\"\n",
+ ndn->bv_val, 0, 0 );
+#endif
+ if ( free_lock_id ) {
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ }
+ return LDAP_NO_SUCH_OBJECT;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, DETAIL1, "bdb_entry_get: found entry (%s)\n",
+ ndn->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> bdb_entry_get: found entry: \"%s\"\n",
+ ndn->bv_val, 0, 0 );
+#endif
+
+#ifdef BDB_ALIASES
+ /* find attribute values */
+ if( is_entry_alias( e ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: entry (%s) is an alias\n", e->e_name.bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= bdb_entry_get: entry is an alias\n", 0, 0, 0 );
+#endif
+ rc = LDAP_ALIAS_PROBLEM;
+ goto return_results;
+ }
+#endif
+
+ if( is_entry_referral( e ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: entry (%s) is a referral.\n", e->e_name.bv_val, 0, 0);
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= bdb_entry_get: entry is a referral\n", 0, 0, 0 );
+#endif
+ rc = LDAP_REFERRAL;
+ goto return_results;
+ }
+
+ if ( oc && !is_entry_objectclass( e, oc, 0 )) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: failed to find objectClass.\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= bdb_entry_get: failed to find objectClass\n",
+ 0, 0, 0 );
+#endif
+ rc = LDAP_NO_SUCH_ATTRIBUTE;
+ goto return_results;
+ }
+
+return_results:
+ if( rc != LDAP_SUCCESS ) {
+ /* free entry */
+ bdb_cache_return_entry_rw(bdb->bi_dbenv, &bdb->bi_cache, e, rw, &lock);
+ } else {
+ *ent = e;
+ /* big drag. we need a place to store a read lock so we can
+ * release it later??
+ */
+ if ( op && !boi ) {
+ boi = op->o_tmpcalloc(1,sizeof(struct bdb_op_info),op->o_tmpmemctx);
+ boi->boi_lock = lock;
+ op->o_private = boi;
+ }
+ }
+
+ if ( free_lock_id ) {
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, ENTRY, "bdb_entry_get: rc=%d\n", rc, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "bdb_entry_get: rc=%d\n",
+ rc, 0, 0 );
+#endif
+ return(rc);
+}