pkey_kblob2pkey3
#define PKEY_KBLOB2PROTK3 _IOWR(PKEY_IOCTL_MAGIC, 0x1D, struct pkey_kblob2pkey3)
static int pkey_ioctl_kblob2protk3(struct pkey_kblob2pkey3 __user *utp)
struct pkey_kblob2pkey3 ktp;
rc = pkey_ioctl_kblob2protk3((struct pkey_kblob2pkey3 __user *)arg);