/*allocate an array of gob_idx_entry`s that is the size of a gob_idx_entry times the number of entries*/
struct gob_idx_entry* dark_idx = util_alloc(sizeof(struct gob_idx_entry) * current_mastern);

/*read the data into the index*/
rb->read(dark_file, dark_idx, sizeof(struct gob_idx_entry) * current_mastern);

/*splash the filename of the first index entry*/
rb->splash(HZ, dark_idx[0].filename);