}
		info, err := d.Info()
		if err != nil {
			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)

		b.uint32(1)           // total number of disks

		if _, err := w.cw.Write(buf[:]); err != nil {
			return err
		}

		// store max values in the regular end record to signal
		// that the zip64 values should be used instead
		records = uint16max
		size = uint32max
		offset = uint32max
	}

	// write end record
	var buf [directoryEndLen]byte