Int 21 Fn 4302  - Ms-dos 7 - Get Compressed File Size                      [D]

   AX = 4302h
   DS:DX -> ASCIZ pathname for file or directory

Return: CF clear if successful
       ??? = compressed size of file/directory in bytes
   CF set on error
       AX = error code

Note:  on volumes which do not support compression, the returned size is the
     actual file size rounded up to the next cluster boundary

See Also: AH=71h,AH=72h