[Libguestfs] [PATCH v6 00/10] Configurable policy for handling deprecated interfaces

[Markus Armbruster]

This series needs fixups to not break --disable-system --disable-tools
builds.  It's not much (see appended diff), but enough to make me respin
it as v7.  I'll respin the pull request, too.


diff --git a/include/qapi/compat-policy.h b/include/qapi/compat-policy.h
index b8c6638156..1083f95122 100644
--- a/include/qapi/compat-policy.h
+++ b/include/qapi/compat-policy.h
@@ -17,4 +17,22 @@
 
 extern CompatPolicy compat_policy;
 
+/*
+ * Create a QObject input visitor for @obj for use with QMP
+ *
+ * This is like qobject_input_visitor_new(), except it obeys the
+ * policy for handling deprecated management interfaces set with
+ * -compat.
+ */
+Visitor *qobject_input_visitor_new_qmp(QObject *obj);
+
+/*
+ * 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-input-visitor.h b/include/qapi/qobject-input-visitor.h
index cbc54de4ac..8d69388810 100644
--- a/include/qapi/qobject-input-visitor.h
+++ b/include/qapi/qobject-input-visitor.h
@@ -15,6 +15,7 @@
 #ifndef QOBJECT_INPUT_VISITOR_H
 #define QOBJECT_INPUT_VISITOR_H
 
+#include "qapi/qapi-types-compat.h"
 #include "qapi/visitor.h"
 
 typedef struct QObjectInputVisitor QObjectInputVisitor;
@@ -58,14 +59,8 @@ typedef struct QObjectInputVisitor QObjectInputVisitor;
  */
 Visitor *qobject_input_visitor_new(QObject *obj);
 
-/*
- * Create a QObject input visitor for @obj for use with QMP
- *
- * This is like qobject_input_visitor_new(), except it obeys the
- * policy for handling deprecated management interfaces set with
- * -compat.
- */
-Visitor *qobject_input_visitor_new_qmp(QObject *obj);
+void qobject_input_visitor_set_policy(Visitor *v,
+                                      CompatPolicyInput deprecated);
 
 /*
  * Create a QObject input visitor for @obj for use with keyval_parse()
diff --git a/include/qapi/qobject-output-visitor.h b/include/qapi/qobject-output-visitor.h
index 29f4ea6aad..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;
 
@@ -53,13 +54,7 @@ typedef struct QObjectOutputVisitor QObjectOutputVisitor;
  */
 Visitor *qobject_output_visitor_new(QObject **result);
 
-/*
- * 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);
+void qobject_output_visitor_set_policy(Visitor *v,
+                                       CompatPolicyOutput deprecated);
 
 #endif
diff --git a/qapi/qmp-dispatch.c b/qapi/qmp-dispatch.c
index 12657d635e..0f7e2e48fa 100644
--- a/qapi/qmp-dispatch.c
+++ b/qapi/qmp-dispatch.c
@@ -19,6 +19,8 @@
 #include "qapi/qmp/dispatch.h"
 #include "qapi/qmp/qdict.h"
 #include "qapi/qmp/qjson.h"
+#include "qapi/qobject-input-visitor.h"
+#include "qapi/qobject-output-visitor.h"
 #include "sysemu/runstate.h"
 #include "qapi/qmp/qbool.h"
 #include "qemu/coroutine.h"
@@ -26,6 +28,22 @@
 
 CompatPolicy compat_policy;
 
+Visitor *qobject_input_visitor_new_qmp(QObject *obj)
+{
+    Visitor *v = qobject_input_visitor_new(obj);
+
+    qobject_input_visitor_set_policy(v, compat_policy.deprecated_input);
+    return v;
+}
+
+Visitor *qobject_output_visitor_new_qmp(QObject **result)
+{
+    Visitor *v = qobject_output_visitor_new(result);
+
+    qobject_output_visitor_set_policy(v, compat_policy.deprecated_output);
+    return v;
+}
+
 static QDict *qmp_dispatch_check_obj(QDict *dict, bool allow_oob,
                                      Error **errp)
 {
diff --git a/qapi/qobject-input-visitor.c b/qapi/qobject-input-visitor.c
index baad0dcd3c..04b790412e 100644
--- a/qapi/qobject-input-visitor.c
+++ b/qapi/qobject-input-visitor.c
@@ -739,12 +739,12 @@ Visitor *qobject_input_visitor_new(QObject *obj)
     return &v->visitor;
 }
 
-Visitor *qobject_input_visitor_new_qmp(QObject *obj)
+void qobject_input_visitor_set_policy(Visitor *v,
+                                       CompatPolicyInput deprecated)
 {
-    QObjectInputVisitor *v = to_qiv(qobject_input_visitor_new(obj));
+    QObjectInputVisitor *qiv = to_qiv(v);
 
-    v->deprecated_policy = compat_policy.deprecated_input;
-    return &v->visitor;
+    qiv->deprecated_policy = deprecated;
 }
 
 Visitor *qobject_input_visitor_new_keyval(QObject *obj)
diff --git a/qapi/qobject-output-visitor.c b/qapi/qobject-output-visitor.c
index 5c4aa0f64d..e4873308d4 100644
--- a/qapi/qobject-output-visitor.c
+++ b/qapi/qobject-output-visitor.c
@@ -276,10 +276,10 @@ Visitor *qobject_output_visitor_new(QObject **result)
     return &v->visitor;
 }
 
-Visitor *qobject_output_visitor_new_qmp(QObject **result)
+void qobject_output_visitor_set_policy(Visitor *v,
+                                       CompatPolicyOutput deprecated)
 {
-    QObjectOutputVisitor *v = to_qov(qobject_output_visitor_new(result));
+    QObjectOutputVisitor *qov = to_qov(v);
 
-    v->deprecated_policy = compat_policy.deprecated_output;
-    return &v->visitor;
+    qov->deprecated_policy = deprecated;
 }
diff --git a/scripts/qapi/commands.py b/scripts/qapi/commands.py
index 8ccd1d9224..0e13d51054 100644
--- a/scripts/qapi/commands.py
+++ b/scripts/qapi/commands.py
@@ -255,10 +255,9 @@ def _begin_user_module(self, name: str) -> None:
         visit = self._module_basename('qapi-visit', name)
         self._genc.add(mcgen('''
 #include "qemu/osdep.h"
+#include "qapi/compat-policy.h"
 #include "qapi/visitor.h"
 #include "qapi/qmp/qdict.h"
-#include "qapi/qobject-output-visitor.h"
-#include "qapi/qobject-input-visitor.h"
 #include "qapi/dealloc-visitor.h"
 #include "qapi/error.h"
 #include "%(visit)s.h"
diff --git a/scripts/qapi/events.py b/scripts/qapi/events.py
index 8335c2bdfc..fee8c671e7 100644
--- a/scripts/qapi/events.py
+++ b/scripts/qapi/events.py
@@ -192,7 +192,6 @@ def _begin_user_module(self, name: str) -> None:
 #include "qapi/compat-policy.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qdict.h"
-#include "qapi/qobject-output-visitor.h"
 #include "qapi/qmp-event.h"
 
 ''',