Btrfs-progs: add ability to replace missing dir item/dir indexes

If we have everything except the dir item and dir index we can easily replace
them, so add this ability to btrfsck.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.cz>

1 files changed, 27 insertions, 0 deletions

diff --git a/cmds-check.c b/cmds-check.c
index 923fb10c..f42e3c5c 100644
--- a/cmds-check.c
+++ b/cmds-check.c
@@ -1772,6 +1772,33 @@ static int repair_inode_backrefs(struct btrfs_root *root,
 			}
 		}
 
+		if (!delete && (!backref->found_dir_index &&
+				!backref->found_dir_item &&
+				backref->found_inode_ref)) {
+			struct btrfs_trans_handle *trans;
+			struct btrfs_key location;
+
+			location.objectid = rec->ino;
+			location.type = BTRFS_INODE_ITEM_KEY;
+			location.offset = 0;
+
+			trans = btrfs_start_transaction(root, 1);
+			if (IS_ERR(trans)) {
+				ret = PTR_ERR(trans);
+				break;
+			}
+			fprintf(stderr, "adding missing dir index/item pair "
+				"for inode %llu\n",
+				(unsigned long long)rec->ino);
+			ret = btrfs_insert_dir_item(trans, root, backref->name,
+						    backref->namelen,
+						    backref->dir, &location,
+						    imode_to_type(rec->imode),
+						    backref->index);
+			BUG_ON(ret);
+			btrfs_commit_transaction(trans, root);
+			repaired++;
+		}
 	}
 	return ret ? ret : repaired;
 }