[PATCHv5 2/3] qom: pass original path to unparent method

["Michael S. Tsirkin" <mst@xxxxxxxxxx>]

We need to know the original path since unparenting loses this state.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
 hw/qdev.c            | 4 ++--
 include/qom/object.h | 3 ++-
 qom/object.c         | 4 +++-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/hw/qdev.c b/hw/qdev.c
index 393e83e..8ee8a97 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -436,7 +436,7 @@ static void qbus_realize(BusState *bus, DeviceState *parent, const char *name)
     }
 }
 
-static void bus_unparent(Object *obj)
+static void bus_unparent(Object *obj, const char *path)
 {
     BusState *bus = BUS(obj);
     BusChild *kid;
@@ -756,7 +756,7 @@ static void device_class_base_init(ObjectClass *class, void *data)
     klass->props = NULL;
 }
 
-static void device_unparent(Object *obj)
+static void device_unparent(Object *obj, const char *path)
 {
     DeviceState *dev = DEVICE(obj);
     DeviceClass *dc = DEVICE_GET_CLASS(dev);
diff --git a/include/qom/object.h b/include/qom/object.h
index cf094e7..f0790d4 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -330,11 +330,12 @@ typedef struct ObjectProperty
 /**
  * ObjectUnparent:
  * @obj: the object that is being removed from the composition tree
+ * @path: canonical path that object had if any
  *
  * Called when an object is being removed from the QOM composition tree.
  * The function should remove any backlinks from children objects to @obj.
  */
-typedef void (ObjectUnparent)(Object *obj);
+typedef void (ObjectUnparent)(Object *obj, const char *path);
 
 /**
  * ObjectFree:
diff --git a/qom/object.c b/qom/object.c
index 3d638ff..21c9da4 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -362,14 +362,16 @@ static void object_property_del_child(Object *obj, Object *child, Error **errp)
 
 void object_unparent(Object *obj)
 {
+    gchar *path = object_get_canonical_path(obj);
     object_ref(obj);
     if (obj->parent) {
         object_property_del_child(obj->parent, obj, NULL);
     }
     if (obj->class->unparent) {
-        (obj->class->unparent)(obj);
+        (obj->class->unparent)(obj, path);
     }
     object_unref(obj);
+    g_free(path);
 }
 
 static void object_deinit(Object *obj, TypeImpl *type)
-- 
MST

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