/* * This file is auto-generated. Modifications will be lost. * * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/ * for more information. */ #ifndef _BTRFS_CTREE_H_ #define _BTRFS_CTREE_H_ #include #include #include #define BTRFS_MAGIC 0x4D5F53665248425FULL #define BTRFS_MAX_LEVEL 8 #define BTRFS_NAME_LEN 255 #define BTRFS_LINK_MAX 65535U #define BTRFS_ROOT_TREE_OBJECTID 1ULL #define BTRFS_EXTENT_TREE_OBJECTID 2ULL #define BTRFS_CHUNK_TREE_OBJECTID 3ULL #define BTRFS_DEV_TREE_OBJECTID 4ULL #define BTRFS_FS_TREE_OBJECTID 5ULL #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL #define BTRFS_CSUM_TREE_OBJECTID 7ULL #define BTRFS_QUOTA_TREE_OBJECTID 8ULL #define BTRFS_UUID_TREE_OBJECTID 9ULL #define BTRFS_FREE_SPACE_TREE_OBJECTID 10ULL #define BTRFS_BLOCK_GROUP_TREE_OBJECTID 11ULL #define BTRFS_RAID_STRIPE_TREE_OBJECTID 12ULL #define BTRFS_DEV_STATS_OBJECTID 0ULL #define BTRFS_BALANCE_OBJECTID - 4ULL #define BTRFS_ORPHAN_OBJECTID - 5ULL #define BTRFS_TREE_LOG_OBJECTID - 6ULL #define BTRFS_TREE_LOG_FIXUP_OBJECTID - 7ULL #define BTRFS_TREE_RELOC_OBJECTID - 8ULL #define BTRFS_DATA_RELOC_TREE_OBJECTID - 9ULL #define BTRFS_EXTENT_CSUM_OBJECTID - 10ULL #define BTRFS_FREE_SPACE_OBJECTID - 11ULL #define BTRFS_FREE_INO_OBJECTID - 12ULL #define BTRFS_MULTIPLE_OBJECTIDS - 255ULL #define BTRFS_FIRST_FREE_OBJECTID 256ULL #define BTRFS_LAST_FREE_OBJECTID - 256ULL #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL #define BTRFS_DEV_ITEMS_OBJECTID 1ULL #define BTRFS_BTREE_INODE_OBJECTID 1 #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 #define BTRFS_DEV_REPLACE_DEVID 0ULL #define BTRFS_INODE_ITEM_KEY 1 #define BTRFS_INODE_REF_KEY 12 #define BTRFS_INODE_EXTREF_KEY 13 #define BTRFS_XATTR_ITEM_KEY 24 #define BTRFS_VERITY_DESC_ITEM_KEY 36 #define BTRFS_VERITY_MERKLE_ITEM_KEY 37 #define BTRFS_ORPHAN_ITEM_KEY 48 #define BTRFS_DIR_LOG_ITEM_KEY 60 #define BTRFS_DIR_LOG_INDEX_KEY 72 #define BTRFS_DIR_ITEM_KEY 84 #define BTRFS_DIR_INDEX_KEY 96 #define BTRFS_EXTENT_DATA_KEY 108 #define BTRFS_EXTENT_CSUM_KEY 128 #define BTRFS_ROOT_ITEM_KEY 132 #define BTRFS_ROOT_BACKREF_KEY 144 #define BTRFS_ROOT_REF_KEY 156 #define BTRFS_EXTENT_ITEM_KEY 168 #define BTRFS_METADATA_ITEM_KEY 169 #define BTRFS_EXTENT_OWNER_REF_KEY 172 #define BTRFS_TREE_BLOCK_REF_KEY 176 #define BTRFS_EXTENT_DATA_REF_KEY 178 #define BTRFS_SHARED_BLOCK_REF_KEY 182 #define BTRFS_SHARED_DATA_REF_KEY 184 #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 #define BTRFS_FREE_SPACE_INFO_KEY 198 #define BTRFS_FREE_SPACE_EXTENT_KEY 199 #define BTRFS_FREE_SPACE_BITMAP_KEY 200 #define BTRFS_DEV_EXTENT_KEY 204 #define BTRFS_DEV_ITEM_KEY 216 #define BTRFS_CHUNK_ITEM_KEY 228 #define BTRFS_RAID_STRIPE_KEY 230 #define BTRFS_QGROUP_STATUS_KEY 240 #define BTRFS_QGROUP_INFO_KEY 242 #define BTRFS_QGROUP_LIMIT_KEY 244 #define BTRFS_QGROUP_RELATION_KEY 246 #define BTRFS_BALANCE_ITEM_KEY 248 #define BTRFS_TEMPORARY_ITEM_KEY 248 #define BTRFS_DEV_STATS_KEY 249 #define BTRFS_PERSISTENT_ITEM_KEY 249 #define BTRFS_DEV_REPLACE_KEY 250 #if BTRFS_UUID_SIZE != 16 #error "UUID items require BTRFS_UUID_SIZE == 16!" #endif #define BTRFS_UUID_KEY_SUBVOL 251 #define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 #define BTRFS_STRING_ITEM_KEY 253 #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 #define BTRFS_CSUM_SIZE 32 enum btrfs_csum_type { BTRFS_CSUM_TYPE_CRC32 = 0, BTRFS_CSUM_TYPE_XXHASH = 1, BTRFS_CSUM_TYPE_SHA256 = 2, BTRFS_CSUM_TYPE_BLAKE2 = 3, }; #define BTRFS_FT_UNKNOWN 0 #define BTRFS_FT_REG_FILE 1 #define BTRFS_FT_DIR 2 #define BTRFS_FT_CHRDEV 3 #define BTRFS_FT_BLKDEV 4 #define BTRFS_FT_FIFO 5 #define BTRFS_FT_SOCK 6 #define BTRFS_FT_SYMLINK 7 #define BTRFS_FT_XATTR 8 #define BTRFS_FT_MAX 9 #define BTRFS_FT_ENCRYPTED 0x80 #define BTRFS_INODE_NODATASUM (1U << 0) #define BTRFS_INODE_NODATACOW (1U << 1) #define BTRFS_INODE_READONLY (1U << 2) #define BTRFS_INODE_NOCOMPRESS (1U << 3) #define BTRFS_INODE_PREALLOC (1U << 4) #define BTRFS_INODE_SYNC (1U << 5) #define BTRFS_INODE_IMMUTABLE (1U << 6) #define BTRFS_INODE_APPEND (1U << 7) #define BTRFS_INODE_NODUMP (1U << 8) #define BTRFS_INODE_NOATIME (1U << 9) #define BTRFS_INODE_DIRSYNC (1U << 10) #define BTRFS_INODE_COMPRESS (1U << 11) #define BTRFS_INODE_ROOT_ITEM_INIT (1U << 31) #define BTRFS_INODE_FLAG_MASK (BTRFS_INODE_NODATASUM | BTRFS_INODE_NODATACOW | BTRFS_INODE_READONLY | BTRFS_INODE_NOCOMPRESS | BTRFS_INODE_PREALLOC | BTRFS_INODE_SYNC | BTRFS_INODE_IMMUTABLE | BTRFS_INODE_APPEND | BTRFS_INODE_NODUMP | BTRFS_INODE_NOATIME | BTRFS_INODE_DIRSYNC | BTRFS_INODE_COMPRESS | BTRFS_INODE_ROOT_ITEM_INIT) #define BTRFS_INODE_RO_VERITY (1U << 0) #define BTRFS_INODE_RO_FLAG_MASK (BTRFS_INODE_RO_VERITY) struct btrfs_disk_key { __le64 objectid; __u8 type; __le64 offset; } __attribute__((__packed__)); struct btrfs_key { __u64 objectid; __u8 type; __u64 offset; } __attribute__((__packed__)); struct btrfs_header { __u8 csum[BTRFS_CSUM_SIZE]; __u8 fsid[BTRFS_FSID_SIZE]; __le64 bytenr; __le64 flags; __u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; __le64 generation; __le64 owner; __le32 nritems; __u8 level; } __attribute__((__packed__)); #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 #define BTRFS_NUM_BACKUP_ROOTS 4 struct btrfs_root_backup { __le64 tree_root; __le64 tree_root_gen; __le64 chunk_root; __le64 chunk_root_gen; __le64 extent_root; __le64 extent_root_gen; __le64 fs_root; __le64 fs_root_gen; __le64 dev_root; __le64 dev_root_gen; __le64 csum_root; __le64 csum_root_gen; __le64 total_bytes; __le64 bytes_used; __le64 num_devices; __le64 unused_64[4]; __u8 tree_root_level; __u8 chunk_root_level; __u8 extent_root_level; __u8 fs_root_level; __u8 dev_root_level; __u8 csum_root_level; __u8 unused_8[10]; } __attribute__((__packed__)); struct btrfs_item { struct btrfs_disk_key key; __le32 offset; __le32 size; } __attribute__((__packed__)); struct btrfs_leaf { struct btrfs_header header; struct btrfs_item items[]; } __attribute__((__packed__)); struct btrfs_key_ptr { struct btrfs_disk_key key; __le64 blockptr; __le64 generation; } __attribute__((__packed__)); struct btrfs_node { struct btrfs_header header; struct btrfs_key_ptr ptrs[]; } __attribute__((__packed__)); struct btrfs_dev_item { __le64 devid; __le64 total_bytes; __le64 bytes_used; __le32 io_align; __le32 io_width; __le32 sector_size; __le64 type; __le64 generation; __le64 start_offset; __le32 dev_group; __u8 seek_speed; __u8 bandwidth; __u8 uuid[BTRFS_UUID_SIZE]; __u8 fsid[BTRFS_UUID_SIZE]; } __attribute__((__packed__)); struct btrfs_stripe { __le64 devid; __le64 offset; __u8 dev_uuid[BTRFS_UUID_SIZE]; } __attribute__((__packed__)); struct btrfs_chunk { __le64 length; __le64 owner; __le64 stripe_len; __le64 type; __le32 io_align; __le32 io_width; __le32 sector_size; __le16 num_stripes; __le16 sub_stripes; struct btrfs_stripe stripe; } __attribute__((__packed__)); struct btrfs_super_block { __u8 csum[BTRFS_CSUM_SIZE]; __u8 fsid[BTRFS_FSID_SIZE]; __le64 bytenr; __le64 flags; __le64 magic; __le64 generation; __le64 root; __le64 chunk_root; __le64 log_root; __le64 __unused_log_root_transid; __le64 total_bytes; __le64 bytes_used; __le64 root_dir_objectid; __le64 num_devices; __le32 sectorsize; __le32 nodesize; __le32 __unused_leafsize; __le32 stripesize; __le32 sys_chunk_array_size; __le64 chunk_root_generation; __le64 compat_flags; __le64 compat_ro_flags; __le64 incompat_flags; __le16 csum_type; __u8 root_level; __u8 chunk_root_level; __u8 log_root_level; struct btrfs_dev_item dev_item; char label[BTRFS_LABEL_SIZE]; __le64 cache_generation; __le64 uuid_tree_generation; __u8 metadata_uuid[BTRFS_FSID_SIZE]; __u64 nr_global_roots; __le64 reserved[27]; __u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; __u8 padding[565]; } __attribute__((__packed__)); #define BTRFS_FREE_SPACE_EXTENT 1 #define BTRFS_FREE_SPACE_BITMAP 2 struct btrfs_free_space_entry { __le64 offset; __le64 bytes; __u8 type; } __attribute__((__packed__)); struct btrfs_free_space_header { struct btrfs_disk_key location; __le64 generation; __le64 num_entries; __le64 num_bitmaps; } __attribute__((__packed__)); struct btrfs_raid_stride { __le64 devid; __le64 physical; } __attribute__((__packed__)); struct btrfs_stripe_extent { __DECLARE_FLEX_ARRAY(struct btrfs_raid_stride, strides); } __attribute__((__packed__)); #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) #define BTRFS_SUPER_FLAG_METADUMP_V2 (1ULL << 34) #define BTRFS_SUPER_FLAG_CHANGING_FSID (1ULL << 35) #define BTRFS_SUPER_FLAG_CHANGING_FSID_V2 (1ULL << 36) #define BTRFS_SUPER_FLAG_CHANGING_BG_TREE (1ULL << 38) #define BTRFS_SUPER_FLAG_CHANGING_DATA_CSUM (1ULL << 39) #define BTRFS_SUPER_FLAG_CHANGING_META_CSUM (1ULL << 40) struct btrfs_extent_item { __le64 refs; __le64 generation; __le64 flags; } __attribute__((__packed__)); struct btrfs_extent_item_v0 { __le32 refs; } __attribute__((__packed__)); #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) #define BTRFS_BACKREF_REV_MAX 256 #define BTRFS_BACKREF_REV_SHIFT 56 #define BTRFS_BACKREF_REV_MASK (((u64) BTRFS_BACKREF_REV_MAX - 1) << BTRFS_BACKREF_REV_SHIFT) #define BTRFS_OLD_BACKREF_REV 0 #define BTRFS_MIXED_BACKREF_REV 1 #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) struct btrfs_tree_block_info { struct btrfs_disk_key key; __u8 level; } __attribute__((__packed__)); struct btrfs_extent_data_ref { __le64 root; __le64 objectid; __le64 offset; __le32 count; } __attribute__((__packed__)); struct btrfs_shared_data_ref { __le32 count; } __attribute__((__packed__)); struct btrfs_extent_owner_ref { __le64 root_id; } __attribute__((__packed__)); struct btrfs_extent_inline_ref { __u8 type; __le64 offset; } __attribute__((__packed__)); struct btrfs_dev_extent { __le64 chunk_tree; __le64 chunk_objectid; __le64 chunk_offset; __le64 length; __u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; } __attribute__((__packed__)); struct btrfs_inode_ref { __le64 index; __le16 name_len; } __attribute__((__packed__)); struct btrfs_inode_extref { __le64 parent_objectid; __le64 index; __le16 name_len; __u8 name[]; } __attribute__((__packed__)); struct btrfs_timespec { __le64 sec; __le32 nsec; } __attribute__((__packed__)); struct btrfs_inode_item { __le64 generation; __le64 transid; __le64 size; __le64 nbytes; __le64 block_group; __le32 nlink; __le32 uid; __le32 gid; __le32 mode; __le64 rdev; __le64 flags; __le64 sequence; __le64 reserved[4]; struct btrfs_timespec atime; struct btrfs_timespec ctime; struct btrfs_timespec mtime; struct btrfs_timespec otime; } __attribute__((__packed__)); struct btrfs_dir_log_item { __le64 end; } __attribute__((__packed__)); struct btrfs_dir_item { struct btrfs_disk_key location; __le64 transid; __le16 data_len; __le16 name_len; __u8 type; } __attribute__((__packed__)); #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) #define BTRFS_ROOT_SUBVOL_DEAD (1ULL << 48) struct btrfs_root_item { struct btrfs_inode_item inode; __le64 generation; __le64 root_dirid; __le64 bytenr; __le64 byte_limit; __le64 bytes_used; __le64 last_snapshot; __le64 flags; __le32 refs; struct btrfs_disk_key drop_progress; __u8 drop_level; __u8 level; __le64 generation_v2; __u8 uuid[BTRFS_UUID_SIZE]; __u8 parent_uuid[BTRFS_UUID_SIZE]; __u8 received_uuid[BTRFS_UUID_SIZE]; __le64 ctransid; __le64 otransid; __le64 stransid; __le64 rtransid; struct btrfs_timespec ctime; struct btrfs_timespec otime; struct btrfs_timespec stime; struct btrfs_timespec rtime; __le64 reserved[8]; } __attribute__((__packed__)); struct btrfs_root_ref { __le64 dirid; __le64 sequence; __le16 name_len; } __attribute__((__packed__)); struct btrfs_disk_balance_args { __le64 profiles; union { __le64 usage; struct { __le32 usage_min; __le32 usage_max; }; }; __le64 devid; __le64 pstart; __le64 pend; __le64 vstart; __le64 vend; __le64 target; __le64 flags; union { __le64 limit; struct { __le32 limit_min; __le32 limit_max; }; }; __le32 stripes_min; __le32 stripes_max; __le64 unused[6]; } __attribute__((__packed__)); struct btrfs_balance_item { __le64 flags; struct btrfs_disk_balance_args data; struct btrfs_disk_balance_args meta; struct btrfs_disk_balance_args sys; __le64 unused[4]; } __attribute__((__packed__)); enum { BTRFS_FILE_EXTENT_INLINE = 0, BTRFS_FILE_EXTENT_REG = 1, BTRFS_FILE_EXTENT_PREALLOC = 2, BTRFS_NR_FILE_EXTENT_TYPES = 3, }; struct btrfs_file_extent_item { __le64 generation; __le64 ram_bytes; __u8 compression; __u8 encryption; __le16 other_encoding; __u8 type; __le64 disk_bytenr; __le64 disk_num_bytes; __le64 offset; __le64 num_bytes; } __attribute__((__packed__)); struct btrfs_csum_item { __u8 csum; } __attribute__((__packed__)); struct btrfs_dev_stats_item { __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; } __attribute__((__packed__)); #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 struct btrfs_dev_replace_item { __le64 src_devid; __le64 cursor_left; __le64 cursor_right; __le64 cont_reading_from_srcdev_mode; __le64 replace_state; __le64 time_started; __le64 time_stopped; __le64 num_write_errors; __le64 num_uncorrectable_read_errors; } __attribute__((__packed__)); #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) #define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) #define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) #define BTRFS_BLOCK_GROUP_RAID1C3 (1ULL << 9) #define BTRFS_BLOCK_GROUP_RAID1C4 (1ULL << 10) #define BTRFS_BLOCK_GROUP_RESERVED (BTRFS_AVAIL_ALLOC_BIT_SINGLE | BTRFS_SPACE_INFO_GLOBAL_RSV) #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_SYSTEM | BTRFS_BLOCK_GROUP_METADATA) #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID1C3 | BTRFS_BLOCK_GROUP_RAID1C4 | BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6 | BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID10) #define BTRFS_BLOCK_GROUP_RAID56_MASK (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6) #define BTRFS_BLOCK_GROUP_RAID1_MASK (BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID1C3 | BTRFS_BLOCK_GROUP_RAID1C4) #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) #define BTRFS_SPACE_INFO_GLOBAL_RSV (1ULL << 49) #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | BTRFS_AVAIL_ALLOC_BIT_SINGLE) struct btrfs_block_group_item { __le64 used; __le64 chunk_objectid; __le64 flags; } __attribute__((__packed__)); struct btrfs_free_space_info { __le32 extent_count; __le32 flags; } __attribute__((__packed__)); #define BTRFS_FREE_SPACE_USING_BITMAPS (1ULL << 0) #define BTRFS_QGROUP_LEVEL_SHIFT 48 #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) #define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) #define BTRFS_QGROUP_STATUS_FLAG_SIMPLE_MODE (1ULL << 3) #define BTRFS_QGROUP_STATUS_FLAGS_MASK (BTRFS_QGROUP_STATUS_FLAG_ON | BTRFS_QGROUP_STATUS_FLAG_RESCAN | BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT | BTRFS_QGROUP_STATUS_FLAG_SIMPLE_MODE) #define BTRFS_QGROUP_STATUS_VERSION 1 struct btrfs_qgroup_status_item { __le64 version; __le64 generation; __le64 flags; __le64 rescan; __le64 enable_gen; } __attribute__((__packed__)); struct btrfs_qgroup_info_item { __le64 generation; __le64 rfer; __le64 rfer_cmpr; __le64 excl; __le64 excl_cmpr; } __attribute__((__packed__)); struct btrfs_qgroup_limit_item { __le64 flags; __le64 max_rfer; __le64 max_excl; __le64 rsv_rfer; __le64 rsv_excl; } __attribute__((__packed__)); struct btrfs_verity_descriptor_item { __le64 size; __le64 reserved[2]; __u8 encryption; } __attribute__((__packed__)); #endif