evdev.py 文件源码

def _IOR_len(type, nr):
    def f(fileno, buffer):
        request = _IOC(_IOC_READ, ord(type), nr, ctypes.sizeof(buffer))
        if c.ioctl(fileno, request, ctypes.byref(buffer)) < 0:
            err = ctypes.c_int.in_dll(c, 'errno').value
            raise OSError(err, errno.errorcode[err])
        return buffer
    return f