3256 	struct btrfs_ioctl_fs_info_args *fi_args;  in btrfs_ioctl_fs_info()  local
3262 	fi_args = memdup_user(arg, sizeof(*fi_args));  in btrfs_ioctl_fs_info()
3263 	if (IS_ERR(fi_args))  in btrfs_ioctl_fs_info()
3264 		return PTR_ERR(fi_args);  in btrfs_ioctl_fs_info()
3266 	flags_in = fi_args->flags;  in btrfs_ioctl_fs_info()
3267 	memset(fi_args, 0, sizeof(*fi_args));  in btrfs_ioctl_fs_info()
3270 	fi_args->num_devices = fs_devices->num_devices;  in btrfs_ioctl_fs_info()
3273 		if (device->devid > fi_args->max_id)  in btrfs_ioctl_fs_info()
3274 			fi_args->max_id = device->devid;  in btrfs_ioctl_fs_info()
3278 	memcpy(&fi_args->fsid, fs_devices->fsid, sizeof(fi_args->fsid));  in btrfs_ioctl_fs_info()
3279 	fi_args->nodesize = fs_info->nodesize;  in btrfs_ioctl_fs_info()
3280 	fi_args->sectorsize = fs_info->sectorsize;  in btrfs_ioctl_fs_info()
3281 	fi_args->clone_alignment = fs_info->sectorsize;  in btrfs_ioctl_fs_info()
3284 		fi_args->csum_type = btrfs_super_csum_type(fs_info->super_copy);  in btrfs_ioctl_fs_info()
3285 		fi_args->csum_size = btrfs_super_csum_size(fs_info->super_copy);  in btrfs_ioctl_fs_info()
3286 		fi_args->flags |= BTRFS_FS_INFO_FLAG_CSUM_INFO;  in btrfs_ioctl_fs_info()
3290 		fi_args->generation = fs_info->generation;  in btrfs_ioctl_fs_info()
3291 		fi_args->flags |= BTRFS_FS_INFO_FLAG_GENERATION;  in btrfs_ioctl_fs_info()
3295 		memcpy(&fi_args->metadata_uuid, fs_devices->metadata_uuid,  in btrfs_ioctl_fs_info()
3296 		       sizeof(fi_args->metadata_uuid));  in btrfs_ioctl_fs_info()
3297 		fi_args->flags |= BTRFS_FS_INFO_FLAG_METADATA_UUID;  in btrfs_ioctl_fs_info()
3300 	if (copy_to_user(arg, fi_args, sizeof(*fi_args)))  in btrfs_ioctl_fs_info()
3303 	kfree(fi_args);  in btrfs_ioctl_fs_info()