diff options
Diffstat (limited to 'lib/btrfs/btrfsitem/item_root.go')
| -rw-r--r-- | lib/btrfs/btrfsitem/item_root.go | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/lib/btrfs/btrfsitem/item_root.go b/lib/btrfs/btrfsitem/item_root.go index d39bd70..4ffad9a 100644 --- a/lib/btrfs/btrfsitem/item_root.go +++ b/lib/btrfs/btrfsitem/item_root.go @@ -11,10 +11,17 @@ import ( "git.lukeshu.com/btrfs-progs-ng/lib/fmtutil" ) -// key.objectid = tree ID -// key.offset = either -// - 0 if objectid is one of the BTRFS_*_TREE_OBJECTID defines or a non-snapshot volume; or -// - transaction_id of when this snapshot was created +// A Root goes in the ROOT_TREE and defines one of the other trees in +// the filesystem. All trees have a Root item describing them, except +// for the ROOT_TREE, CHUNK_TREE, TREE_LOG, and BLOCK_GROUP_TREE, +// which are defined directly in the superblock. +// +// Key: +// +// key.objectid = tree ID +// key.offset = one of: +// - 0 if objectid is one of the BTRFS_*_TREE_OBJECTID defines or a non-snapshot volume; or +// - transaction_id of when this snapshot was created type Root struct { // trivial ROOT_ITEM=132 Inode Inode `bin:"off=0x000, siz=0xa0"` // ??? Generation btrfsprim.Generation `bin:"off=0x0a0, siz=0x08"` |