# File lib/god/process.rb, line 30
    def file_writable?(file)
      pid = fork do
        begin
          uid_num = Etc.getpwnam(self.uid).uid if self.uid
          gid_num = Etc.getgrnam(self.gid).gid if self.gid

          ::Dir.chroot(self.chroot) if self.chroot
          ::Process.groups = [gid_num] if self.gid
          ::Process::Sys.setgid(gid_num) if self.gid
          ::Process::Sys.setuid(uid_num) if self.uid
        rescue ArgumentError, Errno::EPERM, Errno::ENOENT
          exit(1)
        end

        File.writable?(file_in_chroot(file)) ? exit(0) : exit(1)
      end

      wpid, status = ::Process.waitpid2(pid)
      status.exitstatus == 0 ? true : false
    end