qapi: Implement deprecated-input=reject for QMP command arguments

This policy rejects deprecated input, and thus permits "testing the
future".  Implement it for QMP command arguments: reject commands with
deprecated ones.  Example: when QEMU is run with -compat
deprecated-input=reject, then

    {"execute": "eject", "arguments": {"device": "cd"}}

fails like this

    {"error": {"class": "GenericError", "desc": "Deprecated parameter 'device' disabled by policy"}}

When the deprecated parameter is removed, the error will change to

    {"error": {"class": "GenericError", "desc": "Parameter 'device' is unexpected"}}

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210318155519.1224118-11-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2021-03-18 16:55:18 +01:00
parent d2032598c4
commit db29164103
11 changed files with 101 additions and 2 deletions

View file

@ -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;
@ -58,6 +59,9 @@ typedef struct QObjectInputVisitor QObjectInputVisitor;
*/
Visitor *qobject_input_visitor_new(QObject *obj);
void qobject_input_visitor_set_policy(Visitor *v,
CompatPolicyInput deprecated);
/*
* Create a QObject input visitor for @obj for use with keyval_parse()
*