#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
+#define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100
+#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
/* for s_feature_incompat */
#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
__u8 pv_uuid[LVM2_ID_LEN];
} __attribute__ ((packed));
+
+/*
+ * this is a very generous portion of the super block, giving us
+ * room to translate 14 chunks with 3 stripes each.
+ */
+#define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
+#define BTRFS_LABEL_SIZE 256
+#define BTRFS_UUID_SIZE 16
+#define BTRFS_FSID_SIZE 16
+#define BTRFS_CSUM_SIZE 32
+
+struct btrfs_dev_item {
+ /* the internal btrfs device id */
+ __u64 devid;
+
+ /* size of the device */
+ __u64 total_bytes;
+
+ /* bytes used */
+ __u64 bytes_used;
+
+ /* optimal io alignment for this device */
+ __u32 io_align;
+
+ /* optimal io width for this device */
+ __u32 io_width;
+
+ /* minimal io size for this device */
+ __u32 sector_size;
+
+ /* type and info about this device */
+ __u64 type;
+
+ /* expected generation for this device */
+ __u64 generation;
+
+ /*
+ * starting byte of this partition on the device,
+ * to allowr for stripe alignment in the future
+ */
+ __u64 start_offset;
+
+ /* grouping information for allocation decisions */
+ __u32 dev_group;
+
+ /* seek speed 0-100 where 100 is fastest */
+ __u8 seek_speed;
+
+ /* bandwidth 0-100 where 100 is fastest */
+ __u8 bandwidth;
+
+ /* btrfs generated uuid for this device */
+ __u8 uuid[BTRFS_UUID_SIZE];
+
+ /* uuid of FS who owns this device */
+ __u8 fsid[BTRFS_UUID_SIZE];
+} __attribute__ ((__packed__));
+
+/*
+ * the super block basically lists the main trees of the FS
+ * it currently lacks any block count etc etc
+ */
+struct btrfs_super_block {
+ __u8 csum[BTRFS_CSUM_SIZE];
+ /* the first 3 fields must match struct btrfs_header */
+ __u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
+ __u64 bytenr; /* this block number */
+ __u64 flags;
+
+ /* allowed to be different from the btrfs_header from here own down */
+ __u64 magic;
+ __u64 generation;
+ __u64 root;
+ __u64 chunk_root;
+ __u64 log_root;
+
+ /* this will help find the new super based on the log root */
+ __u64 log_root_transid;
+ __u64 total_bytes;
+ __u64 bytes_used;
+ __u64 root_dir_objectid;
+ __u64 num_devices;
+ __u32 sectorsize;
+ __u32 nodesize;
+ __u32 leafsize;
+ __u32 stripesize;
+ __u32 sys_chunk_array_size;
+ __u64 chunk_root_generation;
+ __u64 compat_flags;
+ __u64 compat_ro_flags;
+ __u64 incompat_flags;
+ __u16 csum_type;
+ __u8 root_level;
+ __u8 chunk_root_level;
+ __u8 log_root_level;
+ struct btrfs_dev_item dev_item;
+
+ char label[BTRFS_LABEL_SIZE];
+
+ /* future expansion */
+ __u64 reserved[32];
+ __u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
+} __attribute__ ((__packed__));
+
+#define F2FS_MAX_EXTENSION 64 /* # of extension entries */
+
+struct f2fs_super_block {
+ __u32 magic; /* Magic Number */
+ __u16 major_ver; /* Major Version */
+ __u16 minor_ver; /* Minor Version */
+ __u32 log_sectorsize; /* log2 sector size in bytes */
+ __u32 log_sectors_per_block; /* log2 # of sectors per block */
+ __u32 log_blocksize; /* log2 block size in bytes */
+ __u32 log_blocks_per_seg; /* log2 # of blocks per segment */
+ __u32 segs_per_sec; /* # of segments per section */
+ __u32 secs_per_zone; /* # of sections per zone */
+ __u32 checksum_offset; /* checksum offset inside super block */
+ __u64 block_count; /* total # of user blocks */
+ __u32 section_count; /* total # of sections */
+ __u32 segment_count; /* total # of segments */
+ __u32 segment_count_ckpt; /* # of segments for checkpoint */
+ __u32 segment_count_sit; /* # of segments for SIT */
+ __u32 segment_count_nat; /* # of segments for NAT */
+ __u32 segment_count_ssa; /* # of segments for SSA */
+ __u32 segment_count_main; /* # of segments for main area */
+ __u32 segment0_blkaddr; /* start block address of segment 0 */
+ __u32 cp_blkaddr; /* start block address of checkpoint */
+ __u32 sit_blkaddr; /* start block address of SIT */
+ __u32 nat_blkaddr; /* start block address of NAT */
+ __u32 ssa_blkaddr; /* start block address of SSA */
+ __u32 main_blkaddr; /* start block address of main area */
+ __u32 root_ino; /* root inode number */
+ __u32 node_ino; /* node inode number */
+ __u32 meta_ino; /* meta inode number */
+ __u8 uuid[16]; /* 128-bit uuid for volume */
+ __u16 volume_name[512]; /* volume name */
+ __u32 extension_count; /* # of extensions below */
+ __u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */
+} __attribute__((__packed__));
+
/*
* Byte swap functions
*/
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff