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author | Luke Shumaker <lukeshu@lukeshu.com> | 2022-06-05 09:27:38 -0600 |
---|---|---|
committer | Luke Shumaker <lukeshu@lukeshu.com> | 2022-06-05 09:27:38 -0600 |
commit | 32840c8b2314164848c30305315eba6907f4acad (patch) | |
tree | f2e3a35ceaef7032b3bd3e705a7eaf2f2234ede1 /cmd/btrfs-dump-tree | |
parent | d333027b3cd9ed0d62842c732acf641dd681f5d9 (diff) |
more
Diffstat (limited to 'cmd/btrfs-dump-tree')
-rw-r--r-- | cmd/btrfs-dump-tree/main.go | 70 |
1 files changed, 65 insertions, 5 deletions
diff --git a/cmd/btrfs-dump-tree/main.go b/cmd/btrfs-dump-tree/main.go index b87778b..6a8a7e6 100644 --- a/cmd/btrfs-dump-tree/main.go +++ b/cmd/btrfs-dump-tree/main.go @@ -80,6 +80,30 @@ func Main(imgfilename string) (err error) { if key.ItemType != btrfsitem.ROOT_ITEM_KEY { return nil } + treeName, ok := map[btrfs.ObjID]string{ + btrfs.ROOT_TREE_OBJECTID: "root", + btrfs.EXTENT_TREE_OBJECTID: "extent", + btrfs.CHUNK_TREE_OBJECTID: "chunk", + btrfs.DEV_TREE_OBJECTID: "device", + btrfs.FS_TREE_OBJECTID: "fs", + btrfs.ROOT_TREE_DIR_OBJECTID: "directory", + btrfs.CSUM_TREE_OBJECTID: "checksum", + btrfs.ORPHAN_OBJECTID: "orphan", + btrfs.TREE_LOG_OBJECTID: "log", + btrfs.TREE_LOG_FIXUP_OBJECTID: "log fixup", + btrfs.TREE_RELOC_OBJECTID: "reloc", + btrfs.DATA_RELOC_TREE_OBJECTID: "data reloc", + btrfs.EXTENT_CSUM_OBJECTID: "extent checksum", + btrfs.QUOTA_TREE_OBJECTID: "quota", + btrfs.UUID_TREE_OBJECTID: "uuid", + btrfs.FREE_SPACE_TREE_OBJECTID: "free space", + btrfs.MULTIPLE_OBJECTIDS: "multiple", + btrfs.BLOCK_GROUP_TREE_OBJECTID: "block group", + }[key.ObjectID] + if !ok { + treeName = "file" + } + fmt.Printf("%s tree %s \n", treeName, fmtKey(key)) return printTree(fs, body.(btrfsitem.Root).ByteNr) }, }); err != nil { @@ -174,10 +198,19 @@ func printTree(fs *btrfs.FS, root btrfs.LogicalAddr) error { // // TODO //case btrfsitem.ROOT_BACKREF_KEY: // // TODO - //case btrfsitem.EXTENT_ITEM_KEY: - // // TODO - //case btrfsitem.METADATA_ITEM_KEY: - // // TODO + case btrfsitem.Extent: + fmt.Printf("\t\trefs %d gen %d flags %v\n", + body.Head.Refs, body.Head.Generation, body.Head.Flags) + if body.Head.Flags.Has(btrfsitem.EXTENT_FLAG_TREE_BLOCK) { + fmt.Printf("\t\ttree block %s level %d\n", + fmtKey(body.Info.Key), body.Info.Level) + } + printExtentInlineRefs(body.Refs) + case btrfsitem.Metadata: + fmt.Printf("\t\trefs %d gen %d flags %v\n", + body.Head.Refs, body.Head.Generation, body.Head.Flags) + fmt.Printf("\t\ttree block skinny level %d\n", item.Head.Key.Offset) + printExtentInlineRefs(body.Refs) //case btrfsitem.TREE_BLOCK_REF_KEY: // fmt.Printf("\t\ttree block backref\n") //case btrfsitem.SHARED_BLOCK_REF_KEY: @@ -250,7 +283,7 @@ func printTree(fs *btrfs.FS, root btrfs.LogicalAddr) error { case btrfsitem.ORPHAN_ITEM_KEY: fmt.Printf("\t\torphan item\n") default: - return fmt.Errorf("unhandled empty item type: %v", item.Head.Key.ItemType) + fmt.Printf("\t\t(error) unhandled empty item type: %v\n", item.Head.Key.ItemType) } case btrfsitem.Error: fmt.Printf("\t\t(error) error item: %v\n", body.Err) @@ -300,6 +333,33 @@ func printHeaderInfo(node btrfs.Node) { fmt.Printf("chunk uuid %s\n", node.Head.ChunkTreeUUID) } +// printExtentInlineRefs mimics part of btrfs-progs kernel-shared/print-tree.c:print_extent_item() +func printExtentInlineRefs(refs []btrfsitem.ExtentInlineRef) { + for _, ref := range refs { + switch subitem := ref.Body.(type) { + case btrfsitem.Empty: + switch ref.Type { + case btrfsitem.TREE_BLOCK_REF_KEY: + fmt.Printf("\t\ttree block backref root %v\n", + btrfs.ObjID(ref.Offset)) + case btrfsitem.SHARED_BLOCK_REF_KEY: + fmt.Printf("\t\tshared block backref parent %d\n", + ref.Offset) + default: + fmt.Printf("\t\t(error) unexpected empty sub-item type: %v\n", ref.Type) + } + case btrfsitem.ExtentDataRef: + fmt.Printf("\t\textent data backref root %v objectid %d offset %d count %d\n", + subitem.Root, subitem.ObjectID, subitem.Offset, subitem.Count) + case btrfsitem.SharedDataRef: + fmt.Printf("\t\tshared data backref parent %d count %d\n", + ref.Offset, subitem.Count) + default: + fmt.Printf("\t\t(error) unexpected sub-item type: %T\n", subitem) + } + } +} + // mimics print-tree.c:btrfs_print_key() func fmtKey(key btrfs.Key) string { var out strings.Builder |