f = open0(O_RDONLY, READ_CONTROL, 0, isDirectory() ? 1 : 0);

        /*
         * NtTrans Query Security Desc Request / Response
         */

        final NtTransQuerySecurityDesc request = new NtTransQuerySecurityDesc(f, 0x04);
        final NtTransQuerySecurityDescResponse response = new NtTransQuerySecurityDescResponse();

        try {
            send(request, response);

            /*
             * NtTrans Query Security Desc Request / Response
             */
            final NtTransQuerySecurityDesc request = new NtTransQuerySecurityDesc(getContext().getConfig(), f.getFid(), types);
            response = th.send(request, response, RequestParam.NO_RETRY);
            return response.getSecurityDescriptor();
        }
    }