case FileSystemInformation.SMB_INFO_ALLOCATION:
            inf = new SmbInfoAllocation();
            break;
        case FileSystemInformation.FS_SIZE_INFO:
            inf = new FileFsSizeInformation();
            break;
        case FileSystemInformation.FS_FULL_SIZE_INFO:
            inf = new FileFsFullSizeInformation();
            break;
        default:
            return null;
        }

class Trans2QueryFSInformationResponse extends SmbComTransactionResponse {

    // information levels
    static final int SMB_INFO_ALLOCATION = 1;
    static final int SMB_QUERY_FS_SIZE_INFO = 0x103;
    static final int SMB_FS_FULL_SIZE_INFORMATION = 1007;

    class SmbInfoAllocation implements AllocInfo {
        long alloc;                  // Also handles SmbQueryFSSizeInfo
        long free;
        int sectPerAlloc;