X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=lib%2Fdiskimage_impl.ml;h=4e338d2c14846ed247ec434ea0e85612ce1839d1;hb=554b96246db7b4db7972a0aa50eb33d4d6039ab6;hp=18af6357d75b0d698a17e27bb33ee1b486a38c2a;hpb=71536ae75dceb08e0f3c3403033fb2eb25a08883;p=virt-df.git

diff --git a/lib/diskimage_impl.ml b/lib/diskimage_impl.ml
index 18af635..4e338d2 100644
--- a/lib/diskimage_impl.ml
+++ b/lib/diskimage_impl.ml
@@ -240,6 +240,7 @@ and lv = {
 and partitioner_probe = device -> partitions
 
 and partitioner_callbacks = {
+  parts_cb_uq : int;
   parts_cb_name : string;
   parts_cb_offset_is_free : partitions -> Int63.t -> bool;
 }
@@ -247,6 +248,7 @@ and partitioner_callbacks = {
 and filesystem_probe = device -> filesystem
 
 and filesystem_callbacks = {
+  fs_cb_uq : int;
   fs_cb_name : string;
   fs_cb_printable_name : string;
   fs_cb_offset_is_free : filesystem -> Int63.t -> bool;
@@ -255,6 +257,7 @@ and filesystem_callbacks = {
 and lvm_probe = device -> pv
 
 and lvm_callbacks = {
+  lvm_cb_uq : int;
   lvm_cb_name : string;
   lvm_cb_list_lvs : pv list -> lv list;
   lvm_cb_offset_is_free : pv -> Int63.t -> bool;
@@ -388,6 +391,17 @@ let probe_for_pv dev =
   );
   r
 
+(* This allows plug-ins to attach their own private data to
+ * the normal plug-in structures (partitions, filesystem, pv, etc.)
+ *)
+let private_data_functions get_key =
+  let h = Hashtbl.create 13 in
+  (fun struc data ->
+     Hashtbl.replace h (get_key struc) data),
+  (fun struc ->
+     try Hashtbl.find h (get_key struc)
+     with Not_found -> assert false (* internal error in the plug-in *))
+
 (*----------------------------------------------------------------------*)
 (* Create machine description. *)
 let open_machine name disks =