Version                   uint8
	Contents_encryption_mode  uint8
	Filenames_encryption_mode uint8
	Flags                     uint8
	Log2_data_unit_size       uint8
	_                         [3]uint8
	Master_key_identifier     [16]uint8
}

type FscryptGetPolicyExArg struct {
	Size   uint64
	Policy [24]byte
}

type FscryptKeySpecifier struct {
	Type uint32
	_    uint32
	U    [32]byte
}