test_ioctl.py 文件源码

def test_ioctl_signed_unsigned_code_param(self):
        if not pty:
            raise unittest.SkipTest('pty module required')
        mfd, sfd = pty.openpty()
        try:
            if termios.TIOCSWINSZ < 0:
                set_winsz_opcode_maybe_neg = termios.TIOCSWINSZ
                set_winsz_opcode_pos = termios.TIOCSWINSZ & 0xffffffffL
            else:
                set_winsz_opcode_pos = termios.TIOCSWINSZ
                set_winsz_opcode_maybe_neg, = struct.unpack("i",
                        struct.pack("I", termios.TIOCSWINSZ))

            our_winsz = struct.pack("HHHH",80,25,0,0)
            # test both with a positive and potentially negative ioctl code
            new_winsz = fcntl.ioctl(mfd, set_winsz_opcode_pos, our_winsz)
            new_winsz = fcntl.ioctl(mfd, set_winsz_opcode_maybe_neg, our_winsz)
        finally:
            os.close(mfd)
            os.close(sfd)