# File lib/zip/zipfilesystem.rb, line 271
      def chmod (modeInt, *filenames)
        filenames.each { |fileName|
          e = get_entry(fileName)
          e.fstype = 3 # force convertion filesystem type to unix
          e.unix_perms = modeInt
          e.externalFileAttributes = modeInt << 16
          e.dirty = true
        }
        filenames.size
      end