* maybe I should put it in. Wonder what NT does?
         */

        return dstIndex - start;
    }


    /**
     * @param il
     * @return
     */
    private static int mapInformationLevel ( int il ) {
        switch ( il ) {
        case FileSystemInformation.SMB_INFO_ALLOCATION:
            return 0x1;
        case FileSystemInformation.FS_SIZE_INFO:
            return 0x103;
        }

     */
    static long mapInformationLevel ( int il ) {
        switch ( il ) {
        case FileInformation.FILE_BASIC_INFO:
            return 0x0101;
        case FileInformation.FILE_STANDARD_INFO:
            return 0x0102;
        case FileInformation.FILE_ENDOFFILE_INFO:
            return 0x0104;
        }
        throw new IllegalArgumentException("Unsupported information level " + il);
    }


    @Override