hSetBinaryMode, -- :: Handle -> Bool -> IO ()
hPutBuf, -- :: Handle -> Ptr a -> Int -> IO ()
hGetBuf, -- :: Handle -> Ptr a -> Int -> IO Int
hSetBinaryMode, -- :: Handle -> Bool -> IO ()
hPutBuf, -- :: Handle -> Ptr a -> Int -> IO ()
hGetBuf, -- :: Handle -> Ptr a -> Int -> IO Int