diff options
Diffstat (limited to 'lib/btrfs/btrfsitem/item_root.go')
| -rw-r--r-- | lib/btrfs/btrfsitem/item_root.go | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/btrfs/btrfsitem/item_root.go b/lib/btrfs/btrfsitem/item_root.go index 2e0b327..ffbbf4d 100644 --- a/lib/btrfs/btrfsitem/item_root.go +++ b/lib/btrfs/btrfsitem/item_root.go @@ -11,12 +11,16 @@ 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 type Root struct { // ROOT_ITEM=132 - Inode Inode `bin:"off=0x000, siz=0xa0"` + Inode Inode `bin:"off=0x000, siz=0xa0"` // ??? Generation btrfsprim.Generation `bin:"off=0x0a0, siz=0x08"` - RootDirID btrfsprim.ObjID `bin:"off=0x0a8, siz=0x08"` - ByteNr btrfsvol.LogicalAddr `bin:"off=0x0b0, siz=0x08"` - ByteLimit int64 `bin:"off=0x0b8, siz=0x08"` + RootDirID btrfsprim.ObjID `bin:"off=0x0a8, siz=0x08"` // inode number of the root inode + ByteNr btrfsvol.LogicalAddr `bin:"off=0x0b0, siz=0x08"` // root node + ByteLimit int64 `bin:"off=0x0b8, siz=0x08"` // always 0 (unused) BytesUsed int64 `bin:"off=0x0c0, siz=0x08"` LastSnapshot int64 `bin:"off=0x0c8, siz=0x08"` Flags RootFlags `bin:"off=0x0d0, siz=0x08"` @@ -36,7 +40,7 @@ type Root struct { // ROOT_ITEM=132 OTime btrfsprim.Time `bin:"off=0x153, siz=0x0c"` STime btrfsprim.Time `bin:"off=0x15f, siz=0x0c"` RTime btrfsprim.Time `bin:"off=0x16b, siz=0x0c"` - GlobalTreeID btrfsprim.ObjID `bin:"off=0x177, siz=0x08"` + GlobalTreeID btrfsprim.ObjID `bin:"off=0x177, siz=0x08"` // ??? Reserved [7]int64 `bin:"off=0x17f, siz=0x38"` binstruct.End `bin:"off=0x1b7"` } |