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[PULL 8/9] qapi: Factor out compat_policy_input_ok()
From: |
Markus Armbruster |
Subject: |
[PULL 8/9] qapi: Factor out compat_policy_input_ok() |
Date: |
Fri, 29 Oct 2021 21:30:14 +0200 |
The code to check policy for handling deprecated input is triplicated.
Factor it out into compat_policy_input_ok() before I mess with it in
the next commit.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211028102520.747396-9-armbru@redhat.com>
[Policy code moved from qmp-dispatch.c to qapi-util.c to make visitors
link without qmp-dispatch.o]
---
include/qapi/compat-policy.h | 7 +++++++
qapi/qapi-util.c | 37 ++++++++++++++++++++++++++++++++++++
qapi/qapi-visit-core.c | 18 ++++++------------
qapi/qmp-dispatch.c | 19 ++++--------------
qapi/qobject-input-visitor.c | 19 ++++--------------
5 files changed, 58 insertions(+), 42 deletions(-)
diff --git a/include/qapi/compat-policy.h b/include/qapi/compat-policy.h
index 1083f95122..8b7b25c0b5 100644
--- a/include/qapi/compat-policy.h
+++ b/include/qapi/compat-policy.h
@@ -13,10 +13,17 @@
#ifndef QAPI_COMPAT_POLICY_H
#define QAPI_COMPAT_POLICY_H
+#include "qapi/error.h"
#include "qapi/qapi-types-compat.h"
extern CompatPolicy compat_policy;
+bool compat_policy_input_ok(unsigned special_features,
+ const CompatPolicy *policy,
+ ErrorClass error_class,
+ const char *kind, const char *name,
+ Error **errp);
+
/*
* Create a QObject input visitor for @obj for use with QMP
*
diff --git a/qapi/qapi-util.c b/qapi/qapi-util.c
index 3c24bb3d45..53b493cb7e 100644
--- a/qapi/qapi-util.c
+++ b/qapi/qapi-util.c
@@ -11,10 +11,47 @@
*/
#include "qemu/osdep.h"
+#include "qapi/compat-policy.h"
#include "qapi/error.h"
#include "qemu/ctype.h"
#include "qapi/qmp/qerror.h"
+CompatPolicy compat_policy;
+
+static bool compat_policy_input_ok1(const char *adjective,
+ CompatPolicyInput policy,
+ ErrorClass error_class,
+ const char *kind, const char *name,
+ Error **errp)
+{
+ switch (policy) {
+ case COMPAT_POLICY_INPUT_ACCEPT:
+ return true;
+ case COMPAT_POLICY_INPUT_REJECT:
+ error_set(errp, error_class, "%s %s %s disabled by policy",
+ adjective, kind, name);
+ return false;
+ case COMPAT_POLICY_INPUT_CRASH:
+ default:
+ abort();
+ }
+}
+
+bool compat_policy_input_ok(unsigned special_features,
+ const CompatPolicy *policy,
+ ErrorClass error_class,
+ const char *kind, const char *name,
+ Error **errp)
+{
+ if ((special_features & 1u << QAPI_DEPRECATED)
+ && !compat_policy_input_ok1("Deprecated",
+ policy->deprecated_input,
+ error_class, kind, name, errp)) {
+ return false;
+ }
+ return true;
+}
+
const char *qapi_enum_lookup(const QEnumLookup *lookup, int val)
{
assert(val >= 0 && val < lookup->size);
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index 34c59286b2..6c13510a2b 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -13,6 +13,7 @@
*/
#include "qemu/osdep.h"
+#include "qapi/compat-policy.h"
#include "qapi/error.h"
#include "qapi/qmp/qerror.h"
#include "qapi/visitor.h"
@@ -409,18 +410,11 @@ static bool input_type_enum(Visitor *v, const char *name,
int *obj,
}
if (lookup->special_features
- && (lookup->special_features[value] & QAPI_DEPRECATED)) {
- switch (v->compat_policy.deprecated_input) {
- case COMPAT_POLICY_INPUT_ACCEPT:
- break;
- case COMPAT_POLICY_INPUT_REJECT:
- error_setg(errp, "Deprecated value '%s' disabled by policy",
- enum_str);
- return false;
- case COMPAT_POLICY_INPUT_CRASH:
- default:
- abort();
- }
+ && !compat_policy_input_ok(lookup->special_features[value],
+ &v->compat_policy,
+ ERROR_CLASS_GENERIC_ERROR,
+ "value", enum_str, errp)) {
+ return false;
}
*obj = value;
diff --git a/qapi/qmp-dispatch.c b/qapi/qmp-dispatch.c
index 8cca18c891..d378bccac7 100644
--- a/qapi/qmp-dispatch.c
+++ b/qapi/qmp-dispatch.c
@@ -26,8 +26,6 @@
#include "qemu/coroutine.h"
#include "qemu/main-loop.h"
-CompatPolicy compat_policy;
-
Visitor *qobject_input_visitor_new_qmp(QObject *obj)
{
Visitor *v = qobject_input_visitor_new(obj);
@@ -176,19 +174,10 @@ QDict *qmp_dispatch(const QmpCommandList *cmds, QObject
*request,
"The command %s has not been found", command);
goto out;
}
- if (cmd->special_features & 1u << QAPI_DEPRECATED) {
- switch (compat_policy.deprecated_input) {
- case COMPAT_POLICY_INPUT_ACCEPT:
- break;
- case COMPAT_POLICY_INPUT_REJECT:
- error_set(&err, ERROR_CLASS_COMMAND_NOT_FOUND,
- "Deprecated command %s disabled by policy",
- command);
- goto out;
- case COMPAT_POLICY_INPUT_CRASH:
- default:
- abort();
- }
+ if (!compat_policy_input_ok(cmd->special_features, &compat_policy,
+ ERROR_CLASS_COMMAND_NOT_FOUND,
+ "command", command, &err)) {
+ goto out;
}
if (!cmd->enabled) {
error_set(&err, ERROR_CLASS_COMMAND_NOT_FOUND,
diff --git a/qapi/qobject-input-visitor.c b/qapi/qobject-input-visitor.c
index c120dbdd92..f0b4c7ca9d 100644
--- a/qapi/qobject-input-visitor.c
+++ b/qapi/qobject-input-visitor.c
@@ -14,6 +14,7 @@
#include "qemu/osdep.h"
#include <math.h>
+#include "qapi/compat-policy.h"
#include "qapi/error.h"
#include "qapi/qobject-input-visitor.h"
#include "qapi/visitor-impl.h"
@@ -666,21 +667,9 @@ static bool qobject_input_policy_reject(Visitor *v, const
char *name,
unsigned special_features,
Error **errp)
{
- if (!(special_features & 1u << QAPI_DEPRECATED)) {
- return false;
- }
-
- switch (v->compat_policy.deprecated_input) {
- case COMPAT_POLICY_INPUT_ACCEPT:
- return false;
- case COMPAT_POLICY_INPUT_REJECT:
- error_setg(errp, "Deprecated parameter '%s' disabled by policy",
- name);
- return true;
- case COMPAT_POLICY_INPUT_CRASH:
- default:
- abort();
- }
+ return !compat_policy_input_ok(special_features, &v->compat_policy,
+ ERROR_CLASS_GENERIC_ERROR,
+ "parameter", name, errp);
}
static void qobject_input_free(Visitor *v)
--
2.31.1
- [PULL 0/9] QAPI patches patches for 2021-10-29, Markus Armbruster, 2021/10/29
- [PULL 7/9] qapi: Generalize enum member policy checking, Markus Armbruster, 2021/10/29
- [PULL 3/9] qapi: Eliminate QCO_NO_OPTIONS for a slight simplification, Markus Armbruster, 2021/10/29
- [PULL 8/9] qapi: Factor out compat_policy_input_ok(),
Markus Armbruster <=
- [PULL 1/9] qapi: New special feature flag "unstable", Markus Armbruster, 2021/10/29
- [PULL 5/9] qapi: Generalize struct member policy checking, Markus Armbruster, 2021/10/29
- [PULL 9/9] qapi: Extend -compat to set policy for unstable interfaces, Markus Armbruster, 2021/10/29
- [PULL 2/9] qapi: Mark unstable QMP parts with feature 'unstable', Markus Armbruster, 2021/10/29
- [PULL 4/9] qapi: Tools for sets of special feature flags in generated code, Markus Armbruster, 2021/10/29
- [PULL 6/9] qapi: Generalize command policy checking, Markus Armbruster, 2021/10/29
- Re: [PULL 0/9] QAPI patches patches for 2021-10-29, Richard Henderson, 2021/10/30