ZFS_IOC_LOAD_KEY
{ (uint_t)ZFS_IOC_LOAD_KEY, "ZFS_IOC_LOAD_KEY",
error = lzc_ioctl(ZFS_IOC_LOAD_KEY, fsname, ioc_args, NULL);
IOC_INPUT_TEST(ZFS_IOC_LOAD_KEY, dataset, required, optional, EINVAL);
CHECK(ZFS_IOC_BASE + 72 == ZFS_IOC_LOAD_KEY);
zfs_ioctl_register("load-key", ZFS_IOC_LOAD_KEY,