3 files changed, 23 insertions, 4 deletions

diff --git a/block.c b/block.c
index 9bb236c..5c30c9d 100644
--- a/block.c
+++ b/block.c
@@ -816,6 +816,13 @@ bool bdrv_dev_has_removable_media(BlockDriverState *bs)
     return !bs->dev || (bs->dev_ops && bs->dev_ops->change_media_cb);
 }
 
+void bdrv_dev_eject_request(BlockDriverState *bs, bool force)
+{
+    if (bs->dev_ops && bs->dev_ops->eject_request_cb) {
+        bs->dev_ops->eject_request_cb(bs->dev_opaque, force);
+    }
+}
+
 bool bdrv_dev_is_tray_open(BlockDriverState *bs)
 {
     if (bs->dev_ops && bs->dev_ops->is_tray_open) {
diff --git a/block.h b/block.h
index 38cd748..051a25d 100644
--- a/block.h
+++ b/block.h
@@ -39,6 +39,15 @@ typedef struct BlockDevOps {
      */
     void (*change_media_cb)(void *opaque, bool load);
     /*
+     * Runs when an eject request is issued from the monitor, the tray
+     * is closed, and the medium is locked.
+     * Device models that do not implement is_medium_locked will not need
+     * this callback.  Device models that can lock the medium or tray might
+     * want to implement the callback and unlock the tray when "force" is
+     * true, even if they do not support eject requests.
+     */
+    void (*eject_request_cb)(void *opaque, bool force);
+    /*
      * Is the virtual tray open?
      * Device models implement this only when the device has a tray.
      */
@@ -111,6 +120,7 @@ void bdrv_detach_dev(BlockDriverState *bs, void *dev);
 void *bdrv_get_attached_dev(BlockDriverState *bs);
 void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops,
                       void *opaque);
+void bdrv_dev_eject_request(BlockDriverState *bs, bool force);
 bool bdrv_dev_has_removable_media(BlockDriverState *bs);
 bool bdrv_dev_is_tray_open(BlockDriverState *bs);
 bool bdrv_dev_is_medium_locked(BlockDriverState *bs);
diff --git a/blockdev.c b/blockdev.c
index 0827bf7..2228186 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -635,10 +635,12 @@ static int eject_device(Monitor *mon, BlockDriverState *bs, int force)
         qerror_report(QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs));
         return -1;
     }
-    if (!force && !bdrv_dev_is_tray_open(bs)
-        && bdrv_dev_is_medium_locked(bs)) {
-        qerror_report(QERR_DEVICE_LOCKED, bdrv_get_device_name(bs));
-        return -1;
+    if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) {
+        bdrv_dev_eject_request(bs, force);
+        if (!force) {
+            qerror_report(QERR_DEVICE_LOCKED, bdrv_get_device_name(bs));
+            return -1;
+        }
     }
     bdrv_close(bs);
     return 0;