2846 	struct btrfs_ioctl_dev_info_args *di_args;  in btrfs_ioctl_dev_info()  local
2850 	di_args = memdup_user(arg, sizeof(*di_args));  in btrfs_ioctl_dev_info()
2851 	if (IS_ERR(di_args))  in btrfs_ioctl_dev_info()
2852 		return PTR_ERR(di_args);  in btrfs_ioctl_dev_info()
2854 	args.devid = di_args->devid;  in btrfs_ioctl_dev_info()
2855 	if (!btrfs_is_empty_uuid(di_args->uuid))  in btrfs_ioctl_dev_info()
2856 		args.uuid = di_args->uuid;  in btrfs_ioctl_dev_info()
2865 	di_args->devid = dev->devid;  in btrfs_ioctl_dev_info()
2866 	di_args->bytes_used = btrfs_device_get_bytes_used(dev);  in btrfs_ioctl_dev_info()
2867 	di_args->total_bytes = btrfs_device_get_total_bytes(dev);  in btrfs_ioctl_dev_info()
2868 	memcpy(di_args->uuid, dev->uuid, sizeof(di_args->uuid));  in btrfs_ioctl_dev_info()
2869 	memcpy(di_args->fsid, dev->fs_devices->fsid, BTRFS_UUID_SIZE);  in btrfs_ioctl_dev_info()
2871 		strscpy(di_args->path, btrfs_dev_name(dev), sizeof(di_args->path));  in btrfs_ioctl_dev_info()
2873 		di_args->path[0] = '\0';  in btrfs_ioctl_dev_info()
2877 	if (ret == 0 && copy_to_user(arg, di_args, sizeof(*di_args)))  in btrfs_ioctl_dev_info()
2880 	kfree(di_args);  in btrfs_ioctl_dev_info()