qom: Factor out user_creatable_add_dict()

The QMP handler qmp_object_add() and the implementation of --object in
qemu-storage-daemon can share most of the code. Currently,
qemu-storage-daemon calls qmp_object_add(), but this is not correct
because different visitors need to be used.

As a first step towards a fix, make qmp_object_add() a wrapper around a
new function user_creatable_add_dict() that can get an additional
parameter. The handling of "props" is only required for compatibility
and not required for the qemu-storage-daemon command line, so it stays
in qmp_object_add().

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

1 files changed, 12 insertions, 0 deletions

diff --git a/include/qom/object_interfaces.h b/include/qom/object_interfaces.h
index 6f92f3cebb..a0037968a4 100644
--- a/include/qom/object_interfaces.h
+++ b/include/qom/object_interfaces.h
@@ -88,6 +88,18 @@ Object *user_creatable_add_type(const char *type, const char *id,
                                 Visitor *v, Error **errp);
 
 /**
+ * user_creatable_add_dict:
+ * @qdict: the object definition
+ * @errp: if an error occurs, a pointer to an area to store the error
+ *
+ * Create an instance of the user creatable object that is defined by
+ * @qdict.  The object type is taken from the QDict key 'qom-type', its
+ * ID from the key 'id'. The remaining entries in @qdict are used to
+ * initialize the object properties.
+ */
+void user_creatable_add_dict(QDict *qdict, Error **errp);
+
+/**
  * user_creatable_add_opts:
  * @opts: the object definition
  * @errp: if an error occurs, a pointer to an area to store the error