return err
		}
		// TODO(#49580): Handle symlinks when fs.ReadLinkFS is available.
		if !info.Mode().IsRegular() {
			return errors.New("tar: cannot add non-regular file")
		}
		h, err := FileInfoHeader(info, "")
		if err != nil {
			return err
		}
		h.Name = name
		if err := tw.WriteHeader(h); err != nil {
			return err
		}
		f, err := fsys.Open(name)
		if err != nil {
			return err

			return nil
		}
		info, err := d.Info()
		if err != nil {
			return err
		}
		if !info.Mode().IsRegular() {
			return errors.New("zip: cannot add non-regular file")
		}
		h, err := FileInfoHeader(info)
		if err != nil {
			return err
		}
		h.Name = name
		h.Method = Deflate
		fw, err := w.CreateHeader(h)
		if err != nil {
			return err
		}
		f, err := fsys.Open(name)