block: New change_media_cb() parameter load

To let device models distinguish between eject and load.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/block.h b/block.h
index 4b7fa35..16bfa0a 100644
--- a/block.h
+++ b/block.h
@@ -32,11 +32,12 @@ typedef struct QEMUSnapshotInfo {
 typedef struct BlockDevOps {
     /*
      * Runs when virtual media changed (monitor commands eject, change)
+     * Argument load is true on load and false on eject.
      * Beware: doesn't run when a host device's physical media
      * changes.  Sure would be useful if it did.
      * Device models with removable media must implement this callback.
      */
-    void (*change_media_cb)(void *opaque);
+    void (*change_media_cb)(void *opaque, bool load);
     /*
      * Is the virtual tray open?
      * Device models implement this only when the device has a tray.