DB_LOCK_IWRITE
DB_LOCK_IWRITE, 0);
DB_LOCK_IWRITE, 0);
DB_LOCK_IWRITE, 0);
DB_LOCK_IWRITE, 0);
(LF_ISSET(DB_RMW) ? DB_LOCK_IWRITE : DB_LOCK_READ);
DB_LOCK_IWRITE, 0);
DB_LOCK_IWRITE, 0);
case DB_LOCK_IWRITE: