FileMode package:zip

defaultFileMode :: Word32
zip Codec.Archive.Zip.Internal
The default permissions for the files, permissions not set on Windows, and are set to rw on Unix. This mimics the behavior of the zip utility.
fromFileMode :: CMode -> Word32
zip Codec.Archive.Zip.Unix
Convert external attributes to the file info. The function assumes a regular file and keeps DOS attributes untouched. 
>>> fromFileMode 0o0755
2179792896
toFileMode :: Word32 -> CMode
zip Codec.Archive.Zip.Unix
Convert external attributes to the file info. 
>>> toFileMode 2179792896
0o0755