: static int rb_io_mode_flags2(int mode)

    open(2)Τ褦ʥ⡼ɻmoderubyΥ⡼ɥե饰
    Ѵޤ

    modeϡO_RDONLY, O_WRONLY, O_RDWRΤ
    줫
    бʲͤΤ줫֤ޤ
    FMODE_READABLE,
    FMODE_WRITABLE,
    FMODE_READWRITE

    FMODE_READWRITEϡFMODE_READABLE
    FMODE_WRITEABLE¤Ǥ

    MS-Windowsʤɥե˥Хʥ꡿ƥ°ζ̤ץ
    ȥۡǤϡmodeO_BINARY¤ꤵƤ
    СͤˤFMODE_BINMODE¤ꤵޤ

