evdev.py 文件源码

def _IOR(type, nr, struct):
    request = _IOC(_IOC_READ, ord(type), nr, ctypes.sizeof(struct))
    def f(fileno):
        buffer = struct()
        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