diff options
Diffstat (limited to 'pkg/btrfs/types_btree.go')
| -rw-r--r-- | pkg/btrfs/types_btree.go | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/pkg/btrfs/types_btree.go b/pkg/btrfs/types_btree.go index 99371d2..32c063e 100644 --- a/pkg/btrfs/types_btree.go +++ b/pkg/btrfs/types_btree.go @@ -54,7 +54,8 @@ func (f NodeFlags) String() string { return util.BitfieldString(f, nodeF type Node struct { // Some context from the parent filesystem - Size uint32 // superblock.NodeSize + Size uint32 // superblock.NodeSize + ChecksumType CSumType // superblock.ChecksumType // The node's header (always present) Head NodeHeader @@ -97,7 +98,7 @@ func (node Node) CalculateChecksum() (CSum, error) { if err != nil { return CSum{}, err } - return CRC32c(data[binstruct.StaticSize(CSum{}):]), nil + return node.ChecksumType.Sum(data[binstruct.StaticSize(CSum{}):]) } func (node Node) ValidateChecksum() error { @@ -115,7 +116,8 @@ func (node Node) ValidateChecksum() error { func (node *Node) UnmarshalBinary(nodeBuf []byte) (int, error) { *node = Node{ - Size: uint32(len(nodeBuf)), + Size: uint32(len(nodeBuf)), + ChecksumType: node.ChecksumType, } n, err := binstruct.Unmarshal(nodeBuf, &node.Head) if err != nil { @@ -334,6 +336,10 @@ func ReadNode[Addr ~int64](fs util.File[Addr], sb Superblock, addr Addr, laddrCB nodeRef := &util.Ref[Addr, Node]{ File: fs, Addr: addr, + Data: Node{ + Size: sb.NodeSize, + ChecksumType: sb.ChecksumType, + }, } if _, err := binstruct.Unmarshal(nodeBuf, &nodeRef.Data.Head); err != nil { return nodeRef, fmt.Errorf("btrfs.ReadNode: node@%v: %w", addr, err) @@ -346,7 +352,10 @@ func ReadNode[Addr ~int64](fs util.File[Addr], sb Superblock, addr Addr, laddrCB } stored := nodeRef.Data.Head.Checksum - calced := CRC32c(nodeBuf[binstruct.StaticSize(CSum{}):]) + calced, err := nodeRef.Data.ChecksumType.Sum(nodeBuf[binstruct.StaticSize(CSum{}):]) + if err != nil { + return nodeRef, fmt.Errorf("btrfs.ReadNode: node@%v: %w", addr, err) + } if stored != calced { return nodeRef, fmt.Errorf("btrfs.ReadNode: node@%v: looks like a node but is corrupt: checksum mismatch: stored=%v calculated=%v", addr, stored, calced) |