2740 	struct btrfs_ioctl_dev_info_args *di_args;  in btrfs_ioctl_dev_info()  local
2746 	di_args = memdup_user(arg, sizeof(*di_args));  in btrfs_ioctl_dev_info()
2747 	if (IS_ERR(di_args))  in btrfs_ioctl_dev_info()
2748 		return PTR_ERR(di_args);  in btrfs_ioctl_dev_info()
2750 	if (!btrfs_is_empty_uuid(di_args->uuid))  in btrfs_ioctl_dev_info()
2751 		s_uuid = di_args->uuid;  in btrfs_ioctl_dev_info()
2754 	dev = btrfs_find_device(root->fs_info, di_args->devid, s_uuid, NULL);  in btrfs_ioctl_dev_info()
2761 	di_args->devid = dev->devid;  in btrfs_ioctl_dev_info()
2762 	di_args->bytes_used = btrfs_device_get_bytes_used(dev);  in btrfs_ioctl_dev_info()
2763 	di_args->total_bytes = btrfs_device_get_total_bytes(dev);  in btrfs_ioctl_dev_info()
2764 	memcpy(di_args->uuid, dev->uuid, sizeof(di_args->uuid));  in btrfs_ioctl_dev_info()
2770 		strncpy(di_args->path, name->str, sizeof(di_args->path));  in btrfs_ioctl_dev_info()
2772 		di_args->path[sizeof(di_args->path) - 1] = 0;  in btrfs_ioctl_dev_info()
2774 		di_args->path[0] = '\0';  in btrfs_ioctl_dev_info()
2779 	if (ret == 0 && copy_to_user(arg, di_args, sizeof(*di_args)))  in btrfs_ioctl_dev_info()
2782 	kfree(di_args);  in btrfs_ioctl_dev_info()