qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH v2] qdev: Move global validation to a single fun


From: Don Slutz
Subject: Re: [Qemu-devel] [PATCH v2] qdev: Move global validation to a single function
Date: Tue, 10 Jun 2014 12:12:41 -0400
User-agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

On 06/09/14 14:44, Eduardo Habkost wrote:
This simplifies the global validation code so all its logic is contained
in a single function, and fixes the following:

   $ qemu-system-x86_64 -global container.xxx=y
   hw/core/qdev-properties-system.c:450:qdev_add_one_global: Object 
0x7f8d72a03d70 is not an instance of type device
   Aborted (core dumped)

Signed-off-by: Eduardo Habkost <address@hidden>
---

I do not see any more issues with this and it has
passed all my unit testing so:

Tested-by: Don Slutz <address@hidden>

   -Don Slutz

Changes v2:
  * Rename qdev_prop_check_global() to qdev_prop_check_globals()
  * Don't generate any warnings from global options that were not
    user-provided
---
  hw/core/qdev-properties-system.c | 17 +-------------
  hw/core/qdev-properties.c        | 38 ++++++++++++++++++++++++------
  include/hw/qdev-core.h           | 10 ++++----
  include/hw/qdev-properties.h     |  3 ++-
  tests/test-qdev-global-props.c   | 51 +++++++++++++++++++++++++++++++++++++---
  vl.c                             |  2 +-
  6 files changed, 88 insertions(+), 33 deletions(-)

diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index de433b2..cacd50a 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -439,27 +439,12 @@ PropertyInfo qdev_prop_iothread = {
  static int qdev_add_one_global(QemuOpts *opts, void *opaque)
  {
      GlobalProperty *g;
-    ObjectClass *oc;
g = g_malloc0(sizeof(*g));
      g->driver   = qemu_opt_get(opts, "driver");
      g->property = qemu_opt_get(opts, "property");
      g->value    = qemu_opt_get(opts, "value");
-    oc = object_class_by_name(g->driver);
-    if (oc) {
-        DeviceClass *dc = DEVICE_CLASS(oc);
-
-        if (dc->hotpluggable) {
-            /* If hotpluggable then skip not_used checking. */
-            g->not_used = false;
-        } else {
-            /* Maybe a typo. */
-            g->not_used = true;
-        }
-    } else {
-        /* Maybe a typo. */
-        g->not_used = true;
-    }
+    g->user_provided = true;
      qdev_prop_register_global(g);
      return 0;
  }
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index 3d12560..fc65b7f 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -941,6 +941,14 @@ void qdev_prop_set_ptr(DeviceState *dev, const char *name, 
void *value)
  static QTAILQ_HEAD(, GlobalProperty) global_props =
          QTAILQ_HEAD_INITIALIZER(global_props);
+void qdev_prop_reset_globals(void)
+{
+    GlobalProperty *prop, *nextp;
+    QTAILQ_FOREACH_SAFE(prop, &global_props, next, nextp) {
+        QTAILQ_REMOVE(&global_props, prop, next);
+    }
+}
+
  void qdev_prop_register_global(GlobalProperty *prop)
  {
      QTAILQ_INSERT_TAIL(&global_props, prop, next);
@@ -955,19 +963,35 @@ void qdev_prop_register_global_list(GlobalProperty *props)
      }
  }
-int qdev_prop_check_global(void)
+int qdev_prop_check_globals(void)
  {
      GlobalProperty *prop;
      int ret = 0;
QTAILQ_FOREACH(prop, &global_props, next) {
-        if (!prop->not_used) {
+        ObjectClass *oc;
+        DeviceClass *dc;
+        if (prop->used) {
+            continue;
+        }
+        if (!prop->user_provided) {
+            continue;
+        }
+        oc = object_class_by_name(prop->driver);
+        oc = object_class_dynamic_cast(oc, TYPE_DEVICE);
+        if (!oc) {
+            error_report("Warning: global %s.%s has invalid class name",
+                       prop->driver, prop->property);
+            ret = 1;
+            continue;
+        }
+        dc = DEVICE_CLASS(oc);
+        if (!dc->hotpluggable && !prop->used) {
+            error_report("Warning: global %s.%s=%s\" not used",
+                       prop->driver, prop->property, prop->value);
+            ret = 1;
              continue;
          }
-        ret = 1;
-        error_report("Warning: \"-global %s.%s=%s\" not used",
-                     prop->driver, prop->property, prop->value);
-
      }
      return ret;
  }
@@ -983,7 +1007,7 @@ void qdev_prop_set_globals_for_type(DeviceState *dev, 
const char *typename,
          if (strcmp(typename, prop->driver) != 0) {
              continue;
          }
-        prop->not_used = false;
+        prop->used = true;
          object_property_parse(OBJECT(dev), prop->value, prop->property, &err);
          if (err != NULL) {
              error_propagate(errp, err);
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index 9221cfc..10d7cbc 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -241,16 +241,16 @@ struct PropertyInfo {
/**
   * GlobalProperty:
- * @not_used: Track use of a global property.  Defaults to false in all C99
- * struct initializations.
- *
- * This prevents reports of .compat_props when they are not used.
+ * @user_provided: Set to true if property comes from user-provided config
+ * (command-line or config file).
+ * @used: Set to true if property was used when initializing a device.
   */
  typedef struct GlobalProperty {
      const char *driver;
      const char *property;
      const char *value;
-    bool not_used;
+    bool user_provided;
+    bool used;
      QTAILQ_ENTRY(GlobalProperty) next;
  } GlobalProperty;
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index c962b6b..6c30d6d 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -178,9 +178,10 @@ void qdev_prop_set_enum(DeviceState *dev, const char 
*name, int value);
  /* FIXME: Remove opaque pointer properties.  */
  void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
+void qdev_prop_reset_globals(void);
  void qdev_prop_register_global(GlobalProperty *prop);
  void qdev_prop_register_global_list(GlobalProperty *props);
-int qdev_prop_check_global(void);
+int qdev_prop_check_globals(void);
  void qdev_prop_set_globals(DeviceState *dev, Error **errp);
  void qdev_prop_set_globals_for_type(DeviceState *dev, const char *typename,
                                      Error **errp);
diff --git a/tests/test-qdev-global-props.c b/tests/test-qdev-global-props.c
index 2bef04c..8adf284 100644
--- a/tests/test-qdev-global-props.c
+++ b/tests/test-qdev-global-props.c
@@ -143,18 +143,27 @@ static const TypeInfo dynamic_prop_type = {
      .class_init = dynamic_class_init,
  };
+#define TYPE_NONDEVICE "nondevice-type"
+
+static const TypeInfo nondevice_type = {
+    .name = TYPE_NONDEVICE,
+    .parent = TYPE_OBJECT,
+};
+
  /* Test setting of static property using global properties */
  static void test_dynamic_globalprop(void)
  {
      MyType *mt;
      static GlobalProperty props[] = {
-        { TYPE_DYNAMIC_PROPS, "prop1", "101" },
-        { TYPE_DYNAMIC_PROPS, "prop2", "102" },
+        { TYPE_DYNAMIC_PROPS, "prop1", "101", true },
+        { TYPE_DYNAMIC_PROPS, "prop2", "102", true },
          { TYPE_DYNAMIC_PROPS"-bad", "prop3", "103", true },
+        { TYPE_NONDEVICE, "prop4", "104", true },
          {}
      };
      int all_used;
+ qdev_prop_reset_globals();
      qdev_prop_register_global_list(props);
mt = DYNAMIC_TYPE(object_new(TYPE_DYNAMIC_PROPS));
@@ -162,8 +171,41 @@ static void test_dynamic_globalprop(void)
g_assert_cmpuint(mt->prop1, ==, 101);
      g_assert_cmpuint(mt->prop2, ==, 102);
-    all_used = qdev_prop_check_global();
+    all_used = qdev_prop_check_globals();
      g_assert_cmpuint(all_used, ==, 1);
+    g_assert(props[0].used);
+    g_assert(props[1].used);
+    g_assert(!props[2].used);
+    g_assert(!props[3].used);
+}
+
+/* Test setting of static property using global properties, not user-provided 
*/
+static void test_dynamic_globalprop_nouser(void)
+{
+    MyType *mt;
+    static GlobalProperty props[] = {
+        { TYPE_DYNAMIC_PROPS, "prop1", "101" },
+        { TYPE_DYNAMIC_PROPS, "prop2", "102" },
+        { TYPE_DYNAMIC_PROPS"-bad", "prop3", "103" },
+        { TYPE_NONDEVICE, "prop4", "104" },
+        {}
+    };
+    int all_used;
+
+    qdev_prop_reset_globals();
+    qdev_prop_register_global_list(props);
+
+    mt = DYNAMIC_TYPE(object_new(TYPE_DYNAMIC_PROPS));
+    qdev_init_nofail(DEVICE(mt));
+
+    g_assert_cmpuint(mt->prop1, ==, 101);
+    g_assert_cmpuint(mt->prop2, ==, 102);
+    all_used = qdev_prop_check_globals();
+    g_assert_cmpuint(all_used, ==, 0);
+    g_assert(props[0].used);
+    g_assert(props[1].used);
+    g_assert(!props[2].used);
+    g_assert(!props[3].used);
  }
int main(int argc, char **argv)
@@ -173,10 +215,13 @@ int main(int argc, char **argv)
      module_call_init(MODULE_INIT_QOM);
      type_register_static(&static_prop_type);
      type_register_static(&dynamic_prop_type);
+    type_register_static(&nondevice_type);
g_test_add_func("/qdev/properties/static/default", test_static_prop);
      g_test_add_func("/qdev/properties/static/global", test_static_globalprop);
      g_test_add_func("/qdev/properties/dynamic/global", 
test_dynamic_globalprop);
+    g_test_add_func("/qdev/properties/dynamic/global/nouser",
+                    test_dynamic_globalprop_nouser);
g_test_run(); diff --git a/vl.c b/vl.c
index a3def97..7eb1d1c 100644
--- a/vl.c
+++ b/vl.c
@@ -4541,7 +4541,7 @@ int main(int argc, char **argv, char **envp)
          }
      }
- qdev_prop_check_global();
+    qdev_prop_check_globals();
if (incoming) {
          Error *local_err = NULL;




reply via email to

[Prev in Thread] Current Thread [Next in Thread]