Specify if the vdev is a safety variant, and if so the safety variant version
#include <qvm/vdev-core.h>
enum {
VDEV_SAFETY_NO = 0x55555555,
VDEV_SAFETY_YES = 0xaaaaaaaa,
VDEV_SAFETY_SELECTED = VDEV_SAFETY_NO
};
If you are building a vdev for a system that will be safety-certified, set WANT_SAFETY, and specify the vdev version number.