2 * Copyright (C) 2013 Red Hat Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 (** Handle the cache file. *)
22 (** The immutable cache, which is a map of filename to {!hashes}. *)
24 type hashes = string array
25 (** An array of block hashes. One array for each disk image. *)
27 type filename = string
30 val read_cache_file : unit -> cache
31 (** Read the cache file. *)
33 val write_cache_file : cache -> unit
34 (** Write the cache file. *)
36 val get_hash : cache -> filename -> hashes option
37 (** Get the hash for a particular filename from the cache. *)
39 val update_hash : cache -> filename -> hashes -> cache
40 (** Set or update the hashes corresponding to filename in the cache.
41 Note that since {!cache} is immutable, this returns a new cache