Displaying directory tree sizes with -update and -update_r

xorriso/xorrisoburn.h

@@ -151,6 +151,12 @@ int Xorriso_ls_filev(struct XorrisO *xorriso, char *wd,
 */
 int Xorriso_ls(struct XorrisO *xorriso, int flag);
 
+/*
+   @return: <=0 = error, 1= directory tree, 2= path leads to non-directory
+*/
+int Xorriso_get_dus(struct XorrisO *xorriso, char *iso_rr_path, off_t *size,
+                    off_t boss_mem, int flag);
+
 /* @param wd        Path to prepend in case img_path is not absolute
    @param img_path  Absolute or relative path to be normalized
    @param eff_path  returns resulting effective path.