-j<h,r,s>     Specifies masking of file attributes (default)
  -J<h,r,s>     Specifies extraction of file attributes

  During normal use, PKUNZIP does not extract files as being hidden, system
  or read-only.  If there are files stored within a .ZIP file that have any
  of these attributes, you must specify the -J (upper case) option to keep
  the attributes.

     pkunzip stuff.zip -Jhsr

  In this example all the attributes would be preserved.  For an explanation
  of what file attributes are see your DOS manual.