diff options
Diffstat (limited to 'pkg/btrfs/btrfsitem/item_chunk.go')
| -rw-r--r-- | pkg/btrfs/btrfsitem/item_chunk.go | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/pkg/btrfs/btrfsitem/item_chunk.go b/pkg/btrfs/btrfsitem/item_chunk.go index eb3a16d..8f98ba1 100644 --- a/pkg/btrfs/btrfsitem/item_chunk.go +++ b/pkg/btrfs/btrfsitem/item_chunk.go @@ -8,21 +8,24 @@ import ( ) // Maps logical address to physical. +// +// key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID +// key.offset = logical_addr type Chunk struct { // CHUNK_ITEM=228 Head ChunkHeader Stripes []ChunkStripe } type ChunkHeader struct { - Size uint64 `bin:"off=0x0, siz=0x8"` - Owner internal.ObjID `bin:"off=0x8, siz=0x8"` // root referencing this chunk (always EXTENT_TREE_OBJECTID=2) - StripeLen uint64 `bin:"off=0x10, siz=0x8"` // ??? - Type BlockGroupFlags `bin:"off=0x18, siz=0x8"` - IOOptimalAlign uint32 `bin:"off=0x20, siz=0x4"` - IOOptimalWidth uint32 `bin:"off=0x24, siz=0x4"` - IOMinSize uint32 `bin:"off=0x28, siz=0x4"` // sector size - NumStripes uint16 `bin:"off=0x2c, siz=0x2"` // [ignored-when-writing] - SubStripes uint16 `bin:"off=0x2e, siz=0x2"` // ??? + Size internal.AddrDelta `bin:"off=0x0, siz=0x8"` + Owner internal.ObjID `bin:"off=0x8, siz=0x8"` // root referencing this chunk (always EXTENT_TREE_OBJECTID=2) + StripeLen uint64 `bin:"off=0x10, siz=0x8"` // ??? + Type BlockGroupFlags `bin:"off=0x18, siz=0x8"` + IOOptimalAlign uint32 `bin:"off=0x20, siz=0x4"` + IOOptimalWidth uint32 `bin:"off=0x24, siz=0x4"` + IOMinSize uint32 `bin:"off=0x28, siz=0x4"` // sector size + NumStripes uint16 `bin:"off=0x2c, siz=0x2"` // [ignored-when-writing] + SubStripes uint16 `bin:"off=0x2e, siz=0x2"` // ??? binstruct.End `bin:"off=0x30"` } |