4 files changed, 25 insertions, 0 deletions
diff --git a/include/qapi/compat-policy.h b/include/qapi/compat-policy.h
index b8c6638156..94c8bbd790 100644
--- a/include/qapi/compat-policy.h
+++ b/include/qapi/compat-policy.h
@@ -17,4 +17,13 @@
 
 extern CompatPolicy compat_policy;
 
+/*
+ * Create a QObject output visitor for @obj for use with QMP
+ *
+ * This is like qobject_output_visitor_new(), except it obeys the
+ * policy for handling deprecated management interfaces set with
+ * -compat.
+ */
+Visitor *qobject_output_visitor_new_qmp(QObject **result);
+
 #endif
diff --git a/include/qapi/qobject-output-visitor.h b/include/qapi/qobject-output-visitor.h
index 2b1726baf5..f2a2f92a00 100644
--- a/include/qapi/qobject-output-visitor.h
+++ b/include/qapi/qobject-output-visitor.h
@@ -15,6 +15,7 @@
 #define QOBJECT_OUTPUT_VISITOR_H
 
 #include "qapi/visitor.h"
+#include "qapi/qapi-types-compat.h"
 
 typedef struct QObjectOutputVisitor QObjectOutputVisitor;
 
@@ -53,4 +54,7 @@ typedef struct QObjectOutputVisitor QObjectOutputVisitor;
  */
 Visitor *qobject_output_visitor_new(QObject **result);
 
+void qobject_output_visitor_set_policy(Visitor *v,
+                                       CompatPolicyOutput deprecated);
+
 #endif
diff --git a/include/qapi/visitor-impl.h b/include/qapi/visitor-impl.h
index 7362c043be..2d853255a3 100644
--- a/include/qapi/visitor-impl.h
+++ b/include/qapi/visitor-impl.h
@@ -113,6 +113,9 @@ struct Visitor
        The core takes care of the return type in the public interface. */
     void (*optional)(Visitor *v, const char *name, bool *present);
 
+    /* Optional */
+    bool (*deprecated)(Visitor *v, const char *name);
+
     /* Must be set */
     VisitorType type;
 
diff --git a/include/qapi/visitor.h b/include/qapi/visitor.h
index ebc19ede7f..4d23b59853 100644
--- a/include/qapi/visitor.h
+++ b/include/qapi/visitor.h
@@ -460,6 +460,15 @@ void visit_end_alternate(Visitor *v, void **obj);
 bool visit_optional(Visitor *v, const char *name, bool *present);
 
 /*
+ * Should we visit deprecated member @name?
+ *
+ * @name must not be NULL.  This function is only useful between
+ * visit_start_struct() and visit_end_struct(), since only objects
+ * have deprecated members.
+ */
+bool visit_deprecated(Visitor *v, const char *name);
+
+/*
  * Visit an enum value.
  *
  * @name expresses the relationship of this enum to its parent