diff options
author | Luke Shumaker <lukeshu@lukeshu.com> | 2022-06-06 00:21:59 -0600 |
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committer | Luke Shumaker <lukeshu@lukeshu.com> | 2022-06-06 00:21:59 -0600 |
commit | 20c21bf5ebc085f6f318e9199a1fee5f44c6ea61 (patch) | |
tree | babb8b3e8dcd2d0155d752d9af99209b3598c66b /cmd/btrfs-fsck/main.go | |
parent | 6a5b5b59345c6e57ba496c7d517902c339d2f0b8 (diff) |
wip
Diffstat (limited to 'cmd/btrfs-fsck/main.go')
-rw-r--r-- | cmd/btrfs-fsck/main.go | 100 |
1 files changed, 55 insertions, 45 deletions
diff --git a/cmd/btrfs-fsck/main.go b/cmd/btrfs-fsck/main.go index 2e47588..5f958a6 100644 --- a/cmd/btrfs-fsck/main.go +++ b/cmd/btrfs-fsck/main.go @@ -5,6 +5,7 @@ import ( "os" "sort" + "lukeshu.com/btrfs-tools/pkg/binstruct" "lukeshu.com/btrfs-tools/pkg/btrfs" "lukeshu.com/btrfs-tools/pkg/btrfs/btrfsitem" "lukeshu.com/btrfs-tools/pkg/btrfsmisc" @@ -172,55 +173,64 @@ func Main(imgfilename string) (err error) { // store that node at the root node of the chunk tree. This // isn't true in general, but it's true of my particular // filesystem. - /* - reconstructedNode := &util.Ref[btrfs.LogicalAddr, btrfs.Node]{ - File: fs, - Addr: superblock.Data.ChunkTree, - Data: btrfs.Node{ - Size: superblock.Data.NodeSize, - Head: btrfs.NodeHeader{ - MetadataUUID: superblock.Data.EffectiveMetadataUUID(), - Addr: superblock.Data.ChunkTree, - Flags: btrfs.NodeWritten, - //BackrefRef: ???, - //ChunkTreeUUID: ???, - Generation: superblock.Data.ChunkRootGeneration, - Owner: btrfs.CHUNK_TREE_OBJECTID, - Level: 0, - }, + reconstructedNode := &util.Ref[btrfs.LogicalAddr, btrfs.Node]{ + File: fs, + Addr: superblock.Data.ChunkTree, + Data: btrfs.Node{ + Size: superblock.Data.NodeSize, + Head: btrfs.NodeHeader{ + MetadataUUID: superblock.Data.EffectiveMetadataUUID(), + Addr: superblock.Data.ChunkTree, + Flags: btrfs.NodeWritten, + //BackrefRef: ???, + //ChunkTreeUUID: ???, + Generation: superblock.Data.ChunkRootGeneration, + Owner: btrfs.CHUNK_TREE_OBJECTID, + Level: 0, }, - } - itemOff := superblock.Data.NodeSize - binstruct.StaticSize(btrfs.ItemHeader{}) - for laddr, stripes := range reconstructedChunks { - stripeSize := stripes[0].Size - for i, stripe := range stripes { - if stripes.Size != stripeSize { - panic("mismatch") - } + }, + } + itemOff := uint32(uint64(superblock.Data.NodeSize) - uint64(binstruct.StaticSize(btrfs.ItemHeader{}))) + for laddr, stripes := range reconstructedChunks { + stripeSize := stripes[0].Size + for _, stripe := range stripes { + if stripe.Size != stripeSize { + panic("mismatch") } - itemSize := binstruct.StaticSize(btrfsitem.ChunkHeader) + (len(stripes) * binstruct.StaticSize(btrfsitem.ChunkStripe)) - itemOff -= itemSize - reconstructedNode.Data.BodyLeaf = append(reconstructedNode.Data.BodyLeaf, btrfs.Item{ - Head: btrfs.ItemHeader{ - Key: TODO, - DataOffset: itemOff, - DataSize: itemSize, + } + itemSize := uint32(binstruct.StaticSize(btrfsitem.ChunkHeader{}) + (len(stripes) * binstruct.StaticSize(btrfsitem.ChunkStripe{}))) + itemOff -= itemSize + reconstructedNode.Data.BodyLeaf = append(reconstructedNode.Data.BodyLeaf, btrfs.Item{ + Head: btrfs.ItemHeader{ + Key: btrfs.Key{ + ObjectID: TODO, + ItemType: TODO, + Offset: uint64(laddr), }, - Body: btrfsitem.Chunk{ - Head: btrfsitem.ChunkHeader{ - Size: stripeSize, - Owner: 2, - StripeLen: - Stripes: stripes, + DataOffset: itemOff, + DataSize: itemSize, + }, + Body: btrfsitem.Chunk{ + Head: btrfsitem.ChunkHeader{ + Size: stripeSize, + Owner: btrfs.EXTENT_TREE_OBJECTID, + StripeLen: 65536, // ??? + Type: TODO, + IOOptimalAlign: TODO, + IOOptimalWidth: TODO, + IOMinSize: TODO, + NumStripes: uint16(len(stripes)), + SubStripes: 1, }, - }) - } - reconstructedNode.Data.Head.NumItems = len(reconstructedNode.Data.BodyLeaf) - reconstructedNode.Data.Head.Checksum, err = reconstructedNode.Data.CalculateChecksum() - if err != nil { - fmt.Printf("Pass 1: ... new node checksum: error: %v\n", err) - } - */ + Stripes: stripes, + }, + }) + } + reconstructedNode.Data.Head.NumItems = uint32(len(reconstructedNode.Data.BodyLeaf)) + reconstructedNode.Data.Head.Checksum, err = reconstructedNode.Data.CalculateChecksum() + if err != nil { + fmt.Printf("Pass 1: ... new node checksum: error: %v\n", err) + } fmt.Printf("\nPass 2: ?????????????????????????\n") //////////////////////////////////////// /* |