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

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

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

        try {
            send( request, response );

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