btrfs: Split off btrfstree and btrfsprim sub-packages

1 files changed, 0 insertions, 84 deletions

diff --git a/lib/btrfs/btree_util.go b/lib/btrfs/btree_util.go
deleted file mode 100644
index 2076114..0000000
--- a/lib/btrfs/btree_util.go
+++ /dev/null
@@ -1,84 +0,0 @@
-// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
-//
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package btrfs
-
-import (
-	"fmt"
-
-	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsitem"
-	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol"
-)
-
-// A TreeRoot is more-or-less a btrfsitem.Root, but simpler; returned by
-// LookupTreeRoot.
-type TreeRoot struct {
-	TreeID     ObjID
-	RootNode   btrfsvol.LogicalAddr
-	Level      uint8
-	Generation Generation
-}
-
-// LookupTreeRoot is a utility function to help with implementing the 'Trees'
-// interface.
-func LookupTreeRoot(fs Trees, treeID ObjID) (*TreeRoot, error) {
-	sb, err := fs.Superblock()
-	if err != nil {
-		return nil, err
-	}
-	switch treeID {
-	case ROOT_TREE_OBJECTID:
-		return &TreeRoot{
-			TreeID:     treeID,
-			RootNode:   sb.RootTree,
-			Level:      sb.RootLevel,
-			Generation: sb.Generation, // XXX: same generation as LOG_TREE?
-		}, nil
-	case CHUNK_TREE_OBJECTID:
-		return &TreeRoot{
-			TreeID:     treeID,
-			RootNode:   sb.ChunkTree,
-			Level:      sb.ChunkLevel,
-			Generation: sb.ChunkRootGeneration,
-		}, nil
-	case TREE_LOG_OBJECTID:
-		return &TreeRoot{
-			TreeID:     treeID,
-			RootNode:   sb.LogTree,
-			Level:      sb.LogLevel,
-			Generation: sb.Generation, // XXX: same generation as ROOT_TREE?
-		}, nil
-	case BLOCK_GROUP_TREE_OBJECTID:
-		return &TreeRoot{
-			TreeID:     treeID,
-			RootNode:   sb.BlockGroupRoot,
-			Level:      sb.BlockGroupRootLevel,
-			Generation: sb.BlockGroupRootGeneration,
-		}, nil
-	default:
-		rootItem, err := fs.TreeSearch(ROOT_TREE_OBJECTID, func(key Key, _ uint32) int {
-			if key.ObjectID == treeID && key.ItemType == btrfsitem.ROOT_ITEM_KEY {
-				return 0
-			}
-			return Key{
-				ObjectID: treeID,
-				ItemType: btrfsitem.ROOT_ITEM_KEY,
-				Offset:   0,
-			}.Cmp(key)
-		})
-		if err != nil {
-			return nil, err
-		}
-		rootItemBody, ok := rootItem.Body.(btrfsitem.Root)
-		if !ok {
-			return nil, fmt.Errorf("malformed ROOT_ITEM for tree %v", treeID)
-		}
-		return &TreeRoot{
-			TreeID:     treeID,
-			RootNode:   rootItemBody.ByteNr,
-			Level:      rootItemBody.Level,
-			Generation: rootItemBody.Generation,
-		}, nil
-	}
-}