--- chmod(mode)

    եΥ⡼ɤ mode ѹޤ⡼ɤѹ
     0 ֤ޤԤ㳰 Errno::EXXX ȯ
    ޤ

    mode  chmod(2) [manual page] Ʊͤ˿ͤǻꤷޤ

