File 0316-qdev-add-qdev_alias_all_properties.patch of Package qemu.6354

From 0fd39b6b7bbf7a064d1c5952910ef70e5afe0a55 Mon Sep 17 00:00:00 2001
From: Stefan Hajnoczi <stefanha@redhat.com>
Date: Wed, 18 Jun 2014 17:58:32 +0800
Subject: [PATCH] qdev: add qdev_alias_all_properties()

The qdev_alias_all_properties() function creates QOM alias properties
for each qdev property on a DeviceState.  This is useful for parent
objects that wish to forward property accesses to their children.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
(cherry picked from commit 67cc7e0aaca835ed68cf3bd34f4d51a21232792f)
[BR: Fix and/or infrastructure for BSC#1020427 CVE-2016-9602]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/core/qdev.c               | 21 +++++++++++++++++++++
 include/hw/qdev-properties.h |  2 ++
 2 files changed, 23 insertions(+)

diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 79db4709a4..ad8da1ddda 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -727,6 +727,27 @@ void qdev_property_add_static(DeviceState *dev, Property *prop,
     }
 }
 
+/* @qdev_alias_all_properties - Add alias properties to the source object for
+ * all qdev properties on the target DeviceState.
+ */
+void qdev_alias_all_properties(DeviceState *target, Object *source)
+{
+    ObjectClass *class;
+    Property *prop;
+
+    class = object_get_class(OBJECT(target));
+    do {
+        DeviceClass *dc = DEVICE_CLASS(class);
+
+        for (prop = dc->props; prop && prop->name; prop++) {
+            object_property_add_alias(source, prop->name,
+                                      OBJECT(target), prop->name,
+                                      &error_abort);
+        }
+        class = object_class_get_parent(class);
+    } while (class != object_class_by_name(TYPE_DEVICE));
+}
+
 static bool device_get_realized(Object *obj, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index c46e908d71..ffef425cd0 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -192,6 +192,8 @@ void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
  */
 void qdev_property_add_static(DeviceState *dev, Property *prop, Error **errp);
 
+void qdev_alias_all_properties(DeviceState *target, Object *source);
+
 /**
  * @qdev_prop_set_after_realize:
  * @dev: device