[PATCH v2 07/10] qom: Add object_property_add_size_ptr()

Add a helper to set qom property via a size pointer.

Signed-off-by: Peter Xu <[email protected]>
---
 include/qom/object-property-ptr.h | 16 +++++++++++++
 qom/object-property-ptr.c         | 40 +++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/include/qom/object-property-ptr.h b/include/qom/object-property-ptr.h
index 9cd8600094..be467c64af 100644
--- a/include/qom/object-property-ptr.h
+++ b/include/qom/object-property-ptr.h
@@ -115,4 +115,20 @@ ObjectProperty *object_class_property_add_uint64_ptr(ObjectClass *klass,
                                           const uint64_t *v,
                                           ObjectPropertyFlags flags);
 
+/**
+ * object_property_add_size_ptr:
+ * @obj: the object to add a property to
+ * @name: the name of the property
+ * @v: pointer to value
+ * @flags: bitwise-or'd ObjectPropertyFlags
+ *
+ * Add a property of type 'size' to the object.
+ *
+ * Returns: The newly added property on success, or %NULL on failure.
+ */
+ObjectProperty *
+object_property_add_size_ptr(Object *obj, const char *name,
+                             const uint64_t *v,
+                             ObjectPropertyFlags flags);
+
 #endif
diff --git a/qom/object-property-ptr.c b/qom/object-property-ptr.c
index 49f223da7b..21ceb2510d 100644
--- a/qom/object-property-ptr.c
+++ b/qom/object-property-ptr.c
@@ -107,6 +107,26 @@ static void property_set_uint64_ptr(Object *obj, Visitor *v, const char *name,
     *field = value;
 }
 
+static void property_get_size_ptr(Object *obj, Visitor *v, const char *name,
+                                  void *opaque, Error **errp)
+{
+    uint64_t value = *(uint64_t *)opaque;
+    visit_type_size(v, name, &value, errp);
+}
+
+static void property_set_size_ptr(Object *obj, Visitor *v, const char *name,
+                                  void *opaque, Error **errp)
+{
+    uint64_t *field = opaque;
+    uint64_t value;
+
+    if (!visit_type_size(v, name, &value, errp)) {
+        return;
+    }
+
+    *field = value;
+}
+
 ObjectProperty *
 object_property_add_bool_ptr(Object *obj, const char *name,
                              const bool *v, ObjectPropertyFlags flags)
@@ -285,3 +305,23 @@ object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name,
     return object_class_property_add(klass, name, "uint64",
                                      getter, setter, NULL, (void *)v);
 }
+
+ObjectProperty *
+object_property_add_size_ptr(Object *obj, const char *name,
+                             const uint64_t *v,
+                             ObjectPropertyFlags flags)
+{
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_size_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_size_ptr;
+    }
+
+    return object_property_add(obj, name, "size",
+                               getter, setter, NULL, (void *)v);
+}
-- 
2.53.0