static int reenc_keyslot_open(struct crypt_device *cd __attribute__((unused)),
	int keyslot __attribute__((unused)),
	const char *password __attribute__((unused)),
	size_t password_len __attribute__((unused)),
	char *volume_key __attribute__((unused)),
	size_t volume_key_len __attribute__((unused)))
{
	return -ENOENT;
}
static int reenc_keyslot_open(struct crypt_device *cd __attribute__((unused)),
	int keyslot __attribute__((unused)),
	const char *password __attribute__((unused)),
	size_t password_len __attribute__((unused)),
	char *volume_key __attribute__((unused)),
	size_t volume_key_len __attribute__((unused)))
{
	return -ENOENT;
}