Add disk format requirements for subvol backward and forward refs

[platform/upstream/btrfs-progs.git] / print-tree.c

diff --git a/print-tree.c b/print-tree.c
index 96e1b34..eac4d52 100644 (file)
--- a/print-tree.c
+++ b/print-tree.c
@@ -159,6 +159,21 @@ static void print_file_extent_item(struct extent_buffer *eb,
 }
 
 
+static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
+{
+       struct btrfs_root_ref *ref;
+       char namebuf[BTRFS_NAME_LEN];
+       int namelen;
+
+       ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
+       namelen = btrfs_root_ref_name_len(leaf, ref);
+       read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
+       printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
+              (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
+              (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
+              namelen, namebuf);
+}
+
 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 {
        int i;
@@ -240,6 +255,12 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
                                       root_item.drop_level);
                        }
                        break;
+               case BTRFS_ROOT_REF_KEY:
+                       print_root_ref(l, i, "ref");
+                       break;
+               case BTRFS_ROOT_BACKREF_KEY:
+                       print_root_ref(l, i, "backref");
+                       break;
                case BTRFS_EXTENT_ITEM_KEY:
                        ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
                        printf("\t\textent data refs %u\n",