Support for Linux swap partitions.
*)
-open Diskimage_utils
+open Diskimage_impl
open Int63.Operators
-let plugin_id = "linux_swap"
+let id = "linux_swap"
let blocksize = ~^4096 (* XXX *)
-let probe dev =
+let rec probe dev =
(* Load the "superblock" (ie. first 0x1000 bytes). *)
let bits = dev#read_bitstring ~^0 ~^0x1000 in
bitmatch bits with
| {
- (* Actually this isn't just padding. *)
- padding : 8*0x1000 - 10*8 : bitstring;
+ _ : 8*0x1000 - 10*8 : bitstring;
("SWAP-SPACE"|"SWAPSPACE2") : 80 : string
} ->
let fs_dev = new blocksize_overlay blocksize dev in
{
- fs_plugin_id = plugin_id;
+ fs_cb = callbacks ();
fs_dev = fs_dev;
fs_blocksize = blocksize;
(* Linux swap space is always 'free', apart from the superblock.
* Compare diskimage_linux_swsuspend.ml
*)
-let offset_is_free _ offset = offset >= blocksize
-
-let callbacks = {
- fs_cb_probe = probe;
- fs_cb_offset_is_free = offset_is_free;
-}
+and offset_is_free _ offset = offset >= blocksize
+
+and callbacks =
+ let i = ref 0 in
+ fun () -> {
+ fs_cb_uq = (incr i; !i);
+ fs_cb_name = id;
+ fs_cb_printable_name = "Linux swap";
+ fs_cb_offset_is_free = offset_is_free;
+ }
+
+(* Register the plugin. *)
+let () = register_plugin ~filesystem:probe id