btrfs-progs/mkfs/common.h
Anand Jain 3f27e60866 btrfs-progs: mkfs: add option to specify device uuid
Add option --device-uuid that will set the device uuid item in super
block.

This is useful for creating a filesystem with a specific device uuid,
namely for testing.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2023-10-21 15:51:07 +02:00

118 lines
3.2 KiB
C

/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
/*
* Defines and function declarations for users of the mkfs API, no internal
* definitions.
*/
#ifndef __BTRFS_MKFS_COMMON_H__
#define __BTRFS_MKFS_COMMON_H__
#include "kerncompat.h"
#include <stdbool.h>
#include "kernel-lib/sizes.h"
#include "kernel-shared/uapi/btrfs_tree.h"
#include "common/defs.h"
#include "common/fsfeatures.h"
struct btrfs_root;
struct btrfs_trans_handle;
#define BTRFS_MKFS_SYSTEM_GROUP_SIZE SZ_4M
#define BTRFS_MKFS_SMALL_VOLUME_SIZE SZ_1G
/*
* Default settings for block group types
*/
#define BTRFS_MKFS_DEFAULT_DATA_ONE_DEVICE 0 /* SINGLE */
#define BTRFS_MKFS_DEFAULT_META_ONE_DEVICE BTRFS_BLOCK_GROUP_DUP
#define BTRFS_MKFS_DEFAULT_DATA_MULTI_DEVICE 0 /* SINGLE */
#define BTRFS_MKFS_DEFAULT_META_MULTI_DEVICE BTRFS_BLOCK_GROUP_RAID1
/*
* Tree root blocks created during mkfs
*/
enum btrfs_mkfs_block {
MKFS_ROOT_TREE,
MKFS_EXTENT_TREE,
MKFS_CHUNK_TREE,
MKFS_DEV_TREE,
MKFS_FS_TREE,
MKFS_CSUM_TREE,
MKFS_FREE_SPACE_TREE,
MKFS_BLOCK_GROUP_TREE,
/* MKFS_BLOCK_COUNT should be the max blocks we can have at mkfs time. */
MKFS_BLOCK_COUNT
};
static const enum btrfs_mkfs_block default_blocks[] = {
MKFS_ROOT_TREE,
MKFS_EXTENT_TREE,
MKFS_CHUNK_TREE,
MKFS_DEV_TREE,
MKFS_FS_TREE,
MKFS_CSUM_TREE,
MKFS_FREE_SPACE_TREE,
};
struct btrfs_mkfs_config {
/* Label of the new filesystem */
const char *label;
/* Block sizes */
u32 nodesize;
u32 sectorsize;
u32 stripesize;
u32 leaf_data_size;
struct btrfs_mkfs_features features;
/* Size of the filesystem in bytes */
u64 num_bytes;
/* checksum algorithm to use */
enum btrfs_csum_type csum_type;
u64 zone_size;
/* Output fields, set during creation */
/* Logical addresses of superblock [0] and other tree roots */
u64 blocks[MKFS_BLOCK_COUNT + 1];
/* btrfs_super_block filesystem uuid */
char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
/* Set the given uuid to super block device_item. */
char dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
/* Superblock offset after make_btrfs */
u64 super_bytenr;
};
int make_btrfs(int fd, struct btrfs_mkfs_config *cfg);
int btrfs_make_root_dir(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 objectid);
u64 btrfs_min_dev_size(u32 nodesize, int mixed, u64 meta_profile,
u64 data_profile);
int test_minimum_size(const char *file, u64 min_dev_size);
int is_vol_small(const char *file);
int test_num_disk_vs_raid(u64 metadata_profile, u64 data_profile,
u64 dev_cnt, int mixed, int ssd);
bool test_status_for_mkfs(const char *file, bool force_overwrite);
bool test_dev_for_mkfs(const char *file, int force_overwrite);
#endif