WDIOC_GETSTATUS         _IOR('W', 1, int)
WDIOC_GETBOOTSTATUS     _IOR('W', 2, int)
WDIOC_GETTEMP           _IOR('W', 3, int)
WDIOC_GETTIMEOUT        _IOR('W', 7, int)
WDIOC_GETPRETIMEOUT     _IOR('W', 9, int)
WDIOC_GETTIMELEFT       _IOR('W', 10, int)
WDIOC_SETOPTIONS        _IOR('W', 4, int)
WDIOC_KEEPALIVE         _IOR('W', 5, int)
WDIOC_SETTIMEOUT        _IOWR('W', 6, int)
WDIOC_SETPRETIMEOUT     _IOWR('W', 8, int)