Add open_ctree_fs_info for partial FS opens

fsck needs to be able to open a damaged FS, which means open_ctree needs
to be able to return a damaged FS.

This adds a new open_ctree_fs_info which can be used to open any and all
roots that are valid.  btrfs-debug-tree is changed to use it.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/disk-io.h b/disk-io.h
index 2048fcf..53e9b17 100644
--- a/disk-io.h
+++ b/disk-io.h
@@ -48,6 +48,9 @@ struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr,
 				 int writes);
 struct btrfs_root *open_ctree_recovery(const char *filename, u64 sb_bytenr,
 				       u64 root_tree_bytenr);
+struct btrfs_fs_info *open_ctree_fs_info(const char *filename,
+					 u64 sb_bytenr, int writes,
+					 int partial);
 int close_ctree(struct btrfs_root *root);
 int write_all_supers(struct btrfs_root *root);
 int write_ctree_super(struct btrfs_trans_handle *trans,