void indexbuild_free(indexbuild *ib);
/*
+ * Check to see if a name index has an index tree root available
+ * (i.e. represents a directory rather than a file).
+ */
+int index_has_root(const void *t, int n);
+
+/*
* Query an index to find the total size of records with name
* index strictly less than n, with atime less than at.
*/