(C) Copyright 2007 Richard W.M. Jones, Red Hat Inc.
http://libvirt.org/
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version,
+ with the OCaml linking exception described in ../COPYING.LIB.
- This program is distributed in the hope that it will be useful,
+ This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Support for Linux software suspend partitions.
*)
-open Diskimage_utils
+open Diskimage_impl
open Int63.Operators
-let plugin_id = "linux_swsuspend"
+let id = "linux_swsuspend"
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;
("S1SUSPEND"|"S2SUSPEND") : 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;
| { _ } ->
raise Not_found (* Not Linux software suspend. *)
+
+(* Linux software suspend image is never free.
+ * Compare diskimage_linux_swap.ml
+ *)
+and offset_is_free _ _ = false
+
+and callbacks =
+ let i = ref 0 in
+ fun () -> {
+ fs_cb_uq = (incr i; !i);
+ fs_cb_name = id;
+ fs_cb_printable_name = "Linux s/w suspend";
+ fs_cb_offset_is_free = offset_is_free;
+ }
+
+(* Register the plugin. *)
+let () = register_plugin ~filesystem:probe id