off += write_andx_resp.count;
        } while( len > 0 );
    }
    public long getFilePointer() throws SmbException {
        return fp;
    }
    public void seek( long pos ) throws SmbException {
        fp = pos;
    }
    public long length() throws SmbException {
        return file.length();
    }
    public void setLength( long newLength ) throws SmbException {

    /**
     * 
     */
    public static final byte SMB_COM_CHECK_DIRECTORY = (byte) 0x10;

    /**
     * 
     */
    public static final byte SMB_COM_SEEK = (byte) 0x12;

    /**
     * 
     */
    public static final byte SMB_COM_LOCKING_ANDX = (byte) 0x24;

    /**
     * 
     */
    public static final byte SMB_COM_TRANSACTION = (byte) 0x25;

                try ( SmbRandomAccessFile raf = new SmbRandomAccessFile(f, "r") ) {
                    raf.seek(10);
                    Assert.assertEquals(-1, raf.read());
                }

                byte[] buf = new byte[4];
                try ( SmbRandomAccessFile raf = new SmbRandomAccessFile(f, "r") ) {
                    raf.seek(6);
                    Assert.assertEquals(2, raf.read(buf));

            throw SmbException.wrap(e);
        }
    }


    @Override
    public long getFilePointer () {
        return this.fp;
    }


    @Override
    public void seek ( long pos ) {
        this.fp = pos;
    }


    @Override
    public long length () throws SmbException {
        return this.file.length();
    }


    @Override