Merge.

include/mysql/plugin_audit.h

@@ -24,16 +24,7 @@
 
 #define MYSQL_AUDIT_CLASS_MASK_SIZE 1
 
-#define MYSQL_AUDIT_INTERFACE_VERSION 0x0200
-
-/*
-  The first word in every event class struct indicates the specific
-  class of the event.
-*/
-struct mysql_event
-{
-  unsigned int event_class;
-};
+#define MYSQL_AUDIT_INTERFACE_VERSION 0x0300
 
 
 /*************************************************************************
@@ -55,7 +46,6 @@ struct mysql_event
 
 struct mysql_event_general
 {
-  unsigned int event_class;
   unsigned int event_subclass;
   int general_error_code;
   unsigned long general_thread_id;
@@ -87,7 +77,6 @@ struct mysql_event_general
 
 struct mysql_event_connection
 {
-  unsigned int event_class;
   unsigned int event_subclass;
   int status;
   unsigned long thread_id;
@@ -118,9 +107,9 @@ struct mysql_event_connection
   waiting for the next query from the client.
   
   event_notify() is invoked whenever an event occurs which is of any
-  class for which the plugin has interest. The first word of the
-  mysql_event argument indicates the specific event class and the
-  remainder of the structure is as required for that class.
+  class for which the plugin has interest. The second argument
+  indicates the specific event class and the third argument is data
+  as required for that class.
   
   class_mask is an array of bits used to indicate what event classes
   that this plugin wants to receive.
@@ -130,7 +119,7 @@ struct st_mysql_audit
 {
   int interface_version;
   void (*release_thd)(MYSQL_THD);
-  void (*event_notify)(MYSQL_THD, const struct mysql_event *);
+  void (*event_notify)(MYSQL_THD, unsigned int, const void *);
   unsigned long class_mask[MYSQL_AUDIT_CLASS_MASK_SIZE];
 };
 

include/mysql/plugin_audit.h.pp

@@ -195,13 +195,8 @@ void mysql_query_cache_invalidate4(void* thd,
 void *thd_get_ha_data(const void* thd, const struct handlerton *hton);
 void thd_set_ha_data(void* thd, const struct handlerton *hton,
                      const void *ha_data);
-struct mysql_event
-{
-  unsigned int event_class;
-};
 struct mysql_event_general
 {
-  unsigned int event_class;
   unsigned int event_subclass;
   int general_error_code;
   unsigned long general_thread_id;
@@ -217,7 +212,6 @@ struct mysql_event_general
 };
 struct mysql_event_connection
 {
-  unsigned int event_class;
   unsigned int event_subclass;
   int status;
   unsigned long thread_id;
@@ -240,6 +234,6 @@ struct st_mysql_audit
 {
   int interface_version;
   void (*release_thd)(void*);
-  void (*event_notify)(void*, const struct mysql_event *);
+  void (*event_notify)(void*, unsigned int, const void *);
   unsigned long class_mask[1];
 };

plugin/audit_null/audit_null.c

@@ -81,11 +81,12 @@ static int audit_null_plugin_deinit(void *arg __attribute__((unused)))
 */
 
 static void audit_null_notify(MYSQL_THD thd __attribute__((unused)),
-                              const struct mysql_event *event)
+                              unsigned int event_class,
+                              const void *event)
 {
   /* prone to races, oh well */
   number_of_calls++;
-  if (event->event_class == MYSQL_AUDIT_GENERAL_CLASS)
+  if (event_class == MYSQL_AUDIT_GENERAL_CLASS)
   {
     const struct mysql_event_general *event_general=
       (const struct mysql_event_general *) event;

sql/sql_audit.cc

@@ -21,11 +21,18 @@ extern int finalize_audit_plugin(st_plugin_int *plugin);
 
 #ifndef EMBEDDED_LIBRARY
 
+struct st_mysql_event_generic
+{
+  unsigned int event_class;
+  const void *event;
+};
+
 unsigned long mysql_global_audit_mask[MYSQL_AUDIT_CLASS_MASK_SIZE];
 
 static mysql_mutex_t LOCK_audit_mask;
 
-static void event_class_dispatch(THD *thd, const struct mysql_event *event);
+static void event_class_dispatch(THD *thd, unsigned int event_class,
+                                 const void *event);
 
 
 static inline
@@ -64,7 +71,6 @@ typedef void (*audit_handler_t)(THD *thd, uint event_subtype, va_list ap);
 static void general_class_handler(THD *thd, uint event_subtype, va_list ap)
 {
   mysql_event_general event;
-  event.event_class= MYSQL_AUDIT_GENERAL_CLASS;
   event.event_subclass= event_subtype;
   event.general_error_code= va_arg(ap, int);
   event.general_thread_id= thd ? thd->thread_id : 0;
@@ -77,14 +83,13 @@ static void general_class_handler(THD *thd, uint event_subtype, va_list ap)
   event.general_query_length= va_arg(ap, unsigned int);
   event.general_charset= va_arg(ap, struct charset_info_st *);
   event.general_rows= (unsigned long long) va_arg(ap, ha_rows);
-  event_class_dispatch(thd, (const mysql_event*) &event);
+  event_class_dispatch(thd, MYSQL_AUDIT_GENERAL_CLASS, &event);
 }
 
 
 static void connection_class_handler(THD *thd, uint event_subclass, va_list ap)
 {
   mysql_event_connection event;
-  event.event_class= MYSQL_AUDIT_CONNECTION_CLASS;
   event.event_subclass= event_subclass;
   event.status= va_arg(ap, int);
   event.thread_id= va_arg(ap, unsigned long);
@@ -102,7 +107,7 @@ static void connection_class_handler(THD *thd, uint event_subclass, va_list ap)
   event.ip_length= va_arg(ap, unsigned int);
   event.database= va_arg(ap, const char *);
   event.database_length= va_arg(ap, unsigned int);
-  event_class_dispatch(thd, (const mysql_event *) &event);
+  event_class_dispatch(thd, MYSQL_AUDIT_CONNECTION_CLASS, &event);
 }
 
 
@@ -433,18 +438,19 @@ int finalize_audit_plugin(st_plugin_int *plugin)
 
 static my_bool plugins_dispatch(THD *thd, plugin_ref plugin, void *arg)
 {
-  const struct mysql_event *event= (const struct mysql_event *) arg;
+  const struct st_mysql_event_generic *event_generic=
+    (const struct st_mysql_event_generic *) arg;
   unsigned long event_class_mask[MYSQL_AUDIT_CLASS_MASK_SIZE];
   st_mysql_audit *data= plugin_data(plugin, struct st_mysql_audit *);
 
-  set_audit_mask(event_class_mask, event->event_class);
+  set_audit_mask(event_class_mask, event_generic->event_class);
 
   /* Check to see if the plugin is interested in this event */
   if (check_audit_mask(data->class_mask, event_class_mask))
     return 0;
 
   /* Actually notify the plugin */
-  data->event_notify(thd, event);
+  data->event_notify(thd, event_generic->event_class, event_generic->event);
 
   return 0;
 }
@@ -457,15 +463,19 @@ static my_bool plugins_dispatch(THD *thd, plugin_ref plugin, void *arg)
   @param[in] event
 */
 
-static void event_class_dispatch(THD *thd, const struct mysql_event *event)
+static void event_class_dispatch(THD *thd, unsigned int event_class,
+                                 const void *event)
 {
+  struct st_mysql_event_generic event_generic;
+  event_generic.event_class= event_class;
+  event_generic.event= event;
   /*
     Check if we are doing a slow global dispatch. This event occurs when
     thd == NULL as it is not associated with any particular thread.
   */
   if (unlikely(!thd))
   {
-    plugin_foreach(thd, plugins_dispatch, MYSQL_AUDIT_PLUGIN, (void*) event);
+    plugin_foreach(thd, plugins_dispatch, MYSQL_AUDIT_PLUGIN, &event_generic);
   }
   else
   {
@@ -476,7 +486,7 @@ static void event_class_dispatch(THD *thd, const struct mysql_event *event)
     plugins_last= plugins + thd->audit_class_plugins.elements;
 
     for (; plugins < plugins_last; plugins++)
-      plugins_dispatch(thd, *plugins, (void*) event);
+      plugins_dispatch(thd, *plugins, &event_generic);
   }
 }