mkfs/common.h

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU General Public
   4  * License v2 as published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   9  * General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public
  12  * License along with this program; if not, write to the
  13  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14  * Boston, MA 021110-1307, USA.
  15  */
  16
  17 /*
  18  * Defines and function declarations for users of the mkfs API, no internal
  19  * defintions.
  20  */
  21
  22 #ifndef __BTRFS_MKFS_COMMON_H__
  23 #define __BTRFS_MKFS_COMMON_H__
  24
  25 #include "kerncompat.h"
  26 #include "common-defs.h"
  27
  28 #define BTRFS_MKFS_SYSTEM_GROUP_SIZE SZ_4M
  29 #define BTRFS_MKFS_SMALL_VOLUME_SIZE SZ_1G
  30
  31 /*
  32  * Tree root blocks created during mkfs
  33  */
  34 enum btrfs_mkfs_block {
  35         MKFS_SUPER_BLOCK = 0,
  36         MKFS_ROOT_TREE,
  37         MKFS_EXTENT_TREE,
  38         MKFS_CHUNK_TREE,
  39         MKFS_DEV_TREE,
  40         MKFS_FS_TREE,
  41         MKFS_CSUM_TREE,
  42         MKFS_BLOCK_COUNT
  43 };
  44
  45 struct btrfs_mkfs_config {
  46         /* Label of the new filesystem */
  47         const char *label;
  48         /* Blck sizes */
  49         u32 nodesize;
  50         u32 sectorsize;
  51         u32 stripesize;
  52         /* Bitfield of incompat features, BTRFS_FEATURE_INCOMPAT_* */
  53         u64 features;
  54         /* Size of the filesystem in bytes */
  55         u64 num_bytes;
  56
  57         /* Output fields, set during creation */
  58
  59         /* Logical addresses of superblock [0] and other tree roots */
  60         u64 blocks[MKFS_BLOCK_COUNT + 1];
  61         char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
  62         char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
  63
  64         /* Superblock offset after make_btrfs */
  65         u64 super_bytenr;
  66 };
  67
  68 int make_btrfs(int fd, struct btrfs_mkfs_config *cfg);
  69 u64 btrfs_min_dev_size(u32 nodesize, int mixed, u64 meta_profile,
  70                        u64 data_profile);
  71 int test_minimum_size(const char *file, u64 min_dev_size);
  72 int is_vol_small(const char *file);
  73 int test_num_disk_vs_raid(u64 metadata_profile, u64 data_profile,
  74         u64 dev_cnt, int mixed, int ssd);
  75 int test_status_for_mkfs(const char *file, bool force_overwrite);
  76 int test_dev_for_mkfs(const char *file, int force_overwrite);
  77
  78 #endif