diff options
Diffstat (limited to 'pkg/btrfs/objid.go')
| -rw-r--r-- | pkg/btrfs/objid.go | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/pkg/btrfs/objid.go b/pkg/btrfs/objid.go deleted file mode 100644 index c0c73c5..0000000 --- a/pkg/btrfs/objid.go +++ /dev/null @@ -1,95 +0,0 @@ -package btrfs - -import ( - "fmt" -) - -type ObjID uint64 - -const maxUint64pp = 0x1_0000_0000 - -const ( - // The IDs of the various trees - BTRFS_ROOT_TREE_OBJECTID = ObjID(1) // holds pointers to all of the tree roots - BTRFS_EXTENT_TREE_OBJECTID = ObjID(2) // stores information about which extents are in use, and reference counts - BTRFS_CHUNK_TREE_OBJECTID = ObjID(3) // chunk tree stores translations from logical -> physical block numbering - BTRFS_DEV_TREE_OBJECTID = ObjID(4) // stores info about which areas of a given device are in use; one per device - BTRFS_FS_TREE_OBJECTID = ObjID(5) // one per subvolume, storing files and directories - BTRFS_ROOT_TREE_DIR_OBJECTID = ObjID(6) // directory objectid inside the root tree - BTRFS_CSUM_TREE_OBJECTID = ObjID(7) // holds checksums of all the data extents - BTRFS_QUOTA_TREE_OBJECTID = ObjID(8) - BTRFS_UUID_TREE_OBJECTID = ObjID(9) // for storing items that use the BTRFS_UUID_KEY* - BTRFS_FREE_SPACE_TREE_OBJECTID = ObjID(10) // tracks free space in block groups. - BTRFS_BLOCK_GROUP_TREE_OBJECTID = ObjID(11) // hold the block group items. - - // Objects in the DEV_TREE - BTRFS_DEV_STATS_OBJECTID = ObjID(0) // device stats in the device tree - - // ??? - BTRFS_BALANCE_OBJECTID = ObjID(maxUint64pp - 4) // for storing balance parameters in the root tree - BTRFS_ORPHAN_OBJECTID = ObjID(maxUint64pp - 5) // orphan objectid for tracking unlinked/truncated files - BTRFS_TREE_LOG_OBJECTID = ObjID(maxUint64pp - 6) // does write ahead logging to speed up fsyncs - BTRFS_TREE_LOG_FIXUP_OBJECTID = ObjID(maxUint64pp - 7) - BTRFS_TREE_RELOC_OBJECTID = ObjID(maxUint64pp - 8) // space balancing - BTRFS_DATA_RELOC_TREE_OBJECTID = ObjID(maxUint64pp - 9) - BTRFS_EXTENT_CSUM_OBJECTID = ObjID(maxUint64pp - 10) // extent checksums all have this objectid - BTRFS_FREE_SPACE_OBJECTID = ObjID(maxUint64pp - 11) // For storing free space cache - BTRFS_FREE_INO_OBJECTID = ObjID(maxUint64pp - 12) // stores the inode number for the free-ino cache - - BTRFS_MULTIPLE_OBJECTIDS = ObjID(maxUint64pp - 255) // dummy objectid represents multiple objectids - - // All files have objectids in this range. - BTRFS_FIRST_FREE_OBJECTID = ObjID(256) - BTRFS_LAST_FREE_OBJECTID = ObjID(maxUint64pp - 256) - BTRFS_FIRST_CHUNK_TREE_OBJECTID = ObjID(256) - - // Objects in the CHUNK_TREE - BTRFS_DEV_ITEMS_OBJECTID = ObjID(1) - - // ??? - BTRFS_EMPTY_SUBVOL_DIR_OBJECTID = ObjID(2) -) - -func (id ObjID) String() string { - if id > BTRFS_LAST_FREE_OBJECTID { - names := map[ObjID]string{ - BTRFS_BALANCE_OBJECTID: "BTRFS_BALANCE_OBJECTID", - BTRFS_ORPHAN_OBJECTID: "BTRFS_ORPHAN_OBJECTID", - BTRFS_TREE_LOG_OBJECTID: "BTRFS_TREE_LOG_OBJECTID", - BTRFS_TREE_LOG_FIXUP_OBJECTID: "BTRFS_TREE_LOG_FIXUP_OBJECTID", - BTRFS_TREE_RELOC_OBJECTID: "BTRFS_TREE_RELOC_OBJECTID", - BTRFS_DATA_RELOC_TREE_OBJECTID: "BTRFS_DATA_RELOC_TREE_OBJECTID", - BTRFS_EXTENT_CSUM_OBJECTID: "BTRFS_EXTENT_CSUM_OBJECTID", - BTRFS_FREE_SPACE_OBJECTID: "BTRFS_FREE_SPACE_OBJECTID", - BTRFS_FREE_INO_OBJECTID: "BTRFS_FREE_INO_OBJECTID", - BTRFS_MULTIPLE_OBJECTIDS: "BTRFS_MULTIPLE_OBJECTIDS", - } - if name, ok := names[id]; ok { - return name - } - return fmt.Sprintf("%d", int64(id)) - } - return fmt.Sprintf("%d", id) -} - -type TreeObjID ObjID - -func (id TreeObjID) String() string { - names := map[ObjID]string{ - BTRFS_ROOT_TREE_OBJECTID: "BTRFS_ROOT_TREE_OBJECTID", - BTRFS_EXTENT_TREE_OBJECTID: "BTRFS_EXTENT_TREE_OBJECTID", - BTRFS_CHUNK_TREE_OBJECTID: "BTRFS_CHUNK_TREE_OBJECTID", - BTRFS_DEV_TREE_OBJECTID: "BTRFS_DEV_TREE_OBJECTID", - BTRFS_FS_TREE_OBJECTID: "BTRFS_FS_TREE_OBJECTID", - BTRFS_ROOT_TREE_DIR_OBJECTID: "BTRFS_ROOT_TREE_DIR_OBJECTID", - BTRFS_CSUM_TREE_OBJECTID: "BTRFS_CSUM_TREE_OBJECTID", - BTRFS_QUOTA_TREE_OBJECTID: "BTRFS_QUOTA_TREE_OBJECTID", - BTRFS_UUID_TREE_OBJECTID: "BTRFS_UUID_TREE_OBJECTID", - BTRFS_FREE_SPACE_TREE_OBJECTID: "BTRFS_FREE_SPACE_TREE_OBJECTID", - BTRFS_BLOCK_GROUP_TREE_OBJECTID: "BTRFS_BLOCK_GROUP_TREE_OBJECTID", - } - if name, ok := names[ObjID(id)]; ok { - return name - } - return ObjID(id).String() -} |