if (isOpen()) {
            return;
        }
        fid = open0(flags, access, attrs, options);
        opened = true;
        tree_num = tree.tree_num;
    }

    boolean isOpen() {
        return opened && isConnected() && tree_num == tree.tree_num;
    }

    void close(final int f, final long lastWriteTime) throws SmbException {

        if (LogStream.level >= 3) {