var value WatchdogInfo
	err := ioctlPtr(fd, WDIOC_GETSUPPORT, unsafe.Pointer(&value))
	return &value, err
}

// IoctlWatchdogKeepalive issues a keepalive ioctl to a watchdog device. For
// more information, see:
// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html.
func IoctlWatchdogKeepalive(fd int) error {
	// arg is ignored and not a pointer, so ioctl is fine instead of ioctlPtr.
	return ioctl(fd, WDIOC_KEEPALIVE, 0)
}