- int rc;
- ID kid = NOID;
- ID id;
- DBT key, data;
- DB_TXN *ltid;
-
- DBTzero( &key );
- key.data = (char *) &kid;
- key.size = sizeof( kid );
-
- DBTzero( &data );
- data.data = (char *) &id;
- data.ulen = sizeof( id );
- data.flags = DB_DBT_USERMEM;
-
- if( 0 ) {
-retry: if( tid != NULL ) {
- /* nested transaction, abort and return */
- (void) txn_abort( ltid );
- Debug( LDAP_DEBUG_ANY,
- "=> bdb_next_id: aborted!\n",
- 0, 0, 0 );
- return rc;
- }
- rc = txn_abort( ltid );
- if( rc != 0 ) {
- Debug( LDAP_DEBUG_ANY,
- "=> bdb_next_id: txn_abort failed: %s (%d)\n",
- db_strerror(rc), rc, 0 );
- return rc;
- }
- }
-
- rc = txn_begin( bdb->bi_dbenv, tid, <id, 0 );
- if( rc != 0 ) {
- Debug( LDAP_DEBUG_ANY,
- "=> bdb_next_id: txn_begin failed: %s (%d)\n",
- db_strerror(rc), rc, 0 );
- return rc;
- }
-
- /* get existing value for read/modify/write */
- rc = bdb->bi_nextid->bdi_db->get( bdb->bi_nextid->bdi_db,
- ltid, &key, &data, DB_RMW );
-
- switch(rc) {
- case DB_LOCK_DEADLOCK:
- case DB_LOCK_NOTGRANTED:
- goto retry;
-
- case DB_NOTFOUND:
- id = 0;
- break;
-
- case 0:
- if ( data.size != sizeof( id ) ) {
- Debug( LDAP_DEBUG_ANY,
- "=> bdb_next_id: get size mismatch: expected %ld, got %ld\n",
- (long) sizeof( id ), (long) data.size, 0 );
- rc = -1;
- goto done;
- }
- break;
-
- default:
- Debug( LDAP_DEBUG_ANY,
- "=> bdb_next_id: get failed: %s (%d)\n",
- db_strerror(rc), rc, 0 );
- goto done;
- }
-
- id++;
- data.size = sizeof( id );
-
- /* put new value */
- rc = bdb->bi_nextid->bdi_db->put( bdb->bi_nextid->bdi_db,
- ltid, &key, &data, 0 );
-
- switch(rc) {
- case DB_LOCK_DEADLOCK:
- case DB_LOCK_NOTGRANTED:
- goto retry;
-
- case 0:
- *out = id;
-
- bdb->bi_lastid = id;
-
- rc = txn_commit( ltid, 0 );