[Qemu-devel] [PATCH v4 2/7] qmp: convert QMP code to use object property iterators

["Daniel P. Berrange" <berrange@redhat.com>]

Stop directly accessing the Object "properties" field data
structure and instead use the formal object property iterator
APIs. This insulates the code from future data structure
changes in the Object struct.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
---
 qmp.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/qmp.c b/qmp.c
index d9ecede..5d99439 100644
--- a/qmp.c
+++ b/qmp.c
@@ -208,6 +208,7 @@ ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
     bool ambiguous = false;
     ObjectPropertyInfoList *props = NULL;
     ObjectProperty *prop;
+    ObjectPropertyIterator *iter;
 
     obj = object_resolve_path(path, &ambiguous);
     if (obj == NULL) {
@@ -220,7 +221,8 @@ ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
         return NULL;
     }
 
-    QTAILQ_FOREACH(prop, &obj->properties, node) {
+    iter = object_property_iter_init(obj);
+    while ((prop = object_property_iter_next(iter))) {
         ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));
 
         entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
@@ -230,6 +232,7 @@ ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
         entry->value->name = g_strdup(prop->name);
         entry->value->type = g_strdup(prop->type);
     }
+    object_property_iter_free(iter);
 
     return props;
 }
@@ -500,6 +503,7 @@ DevicePropertyInfoList *qmp_device_list_properties(const char *typename,
     ObjectClass *klass;
     Object *obj;
     ObjectProperty *prop;
+    ObjectPropertyIterator *iter;
     DevicePropertyInfoList *prop_list = NULL;
 
     klass = object_class_by_name(typename);
@@ -528,7 +532,8 @@ DevicePropertyInfoList *qmp_device_list_properties(const char *typename,
 
     obj = object_new(typename);
 
-    QTAILQ_FOREACH(prop, &obj->properties, node) {
+    iter = object_property_iter_init(obj);
+    while ((prop = object_property_iter_next(iter))) {
         DevicePropertyInfo *info;
         DevicePropertyInfoList *entry;
 
@@ -559,6 +564,7 @@ DevicePropertyInfoList *qmp_device_list_properties(const char *typename,
         entry->next = prop_list;
         prop_list = entry;
     }
+    object_property_iter_free(iter);
 
     object_unref(obj);
 
-- 
2.4.3