Merge WL#5496 and WL#5341 to 5.5-bugteam.

1 files changed, 24 insertions, 15 deletions

diff --git a/sql/sql_plugin.cc b/sql/sql_plugin.cc
index f88282487d9..451277712db 100644
--- a/sql/sql_plugin.cc
+++ b/sql/sql_plugin.cc
@@ -42,9 +42,8 @@ extern struct st_mysql_plugin *mysql_mandatory_plugins[];
   @note The order of the enumeration is critical.
   @see construct_options
 */
-static const char *global_plugin_typelib_names[]=
-  { "OFF", "ON", "FORCE", NULL };
-enum enum_plugin_load_policy {PLUGIN_OFF, PLUGIN_ON, PLUGIN_FORCE};
+const char *global_plugin_typelib_names[]=
+  { "OFF", "ON", "FORCE", "FORCE_PLUS_PERMANENT", NULL };
 static TYPELIB global_plugin_typelib=
   { array_elements(global_plugin_typelib_names)-1,
     "", global_plugin_typelib_names, NULL };
@@ -800,6 +799,7 @@ static bool plugin_add(MEM_ROOT *tmp_root,
       tmp.name.length= name_len;
       tmp.ref_count= 0;
       tmp.state= PLUGIN_IS_UNINITIALIZED;
+      tmp.load_option= PLUGIN_ON;
       if (test_plugin_options(tmp_root, &tmp, argc, argv))
         tmp.state= PLUGIN_IS_DISABLED;
 
@@ -1241,7 +1241,7 @@ int plugin_init(int *argc, char **argv, int flags)
       tmp.name.str= (char *)plugin->name;
       tmp.name.length= strlen(plugin->name);
       tmp.state= 0;
-      tmp.is_mandatory= mandatory;
+      tmp.load_option= mandatory ? PLUGIN_FORCE : PLUGIN_ON;
 
       /*
         If the performance schema is compiled in,
@@ -1260,7 +1260,7 @@ int plugin_init(int *argc, char **argv, int flags)
           to work, by using '--skip-performance-schema' (the plugin)
       */
       if (!my_strcasecmp(&my_charset_latin1, plugin->name, "PERFORMANCE_SCHEMA"))
-        tmp.is_mandatory= true;
+        tmp.load_option= PLUGIN_FORCE;
 
       free_root(&tmp_root, MYF(MY_MARK_BLOCKS_FREE));
       if (test_plugin_options(&tmp_root, &tmp, argc, argv))
@@ -1338,7 +1338,8 @@ int plugin_init(int *argc, char **argv, int flags)
   while ((plugin_ptr= *(--reap)))
   {
     mysql_mutex_unlock(&LOCK_plugin);
-    if (plugin_ptr->is_mandatory)
+    if (plugin_ptr->load_option == PLUGIN_FORCE ||
+        plugin_ptr->load_option == PLUGIN_FORCE_PLUS_PERMANENT)
       reaped_mandatory_plugin= TRUE;
     plugin_deinitialize(plugin_ptr, true);
     mysql_mutex_lock(&LOCK_plugin);
@@ -1848,6 +1849,11 @@ bool mysql_uninstall_plugin(THD *thd, const LEX_STRING *name)
     my_error(ER_SP_DOES_NOT_EXIST, MYF(0), "PLUGIN", name->str);
     goto err;
   }
+  if (plugin->load_option == PLUGIN_FORCE_PLUS_PERMANENT)
+  {
+    my_error(ER_PLUGIN_IS_PERMANENT, MYF(0), name->str);
+    goto err;
+  }
 
   plugin->state= PLUGIN_IS_DELETED;
   if (plugin->ref_count)
@@ -3058,7 +3064,8 @@ static int construct_options(MEM_ROOT *mem_root, struct st_plugin_int *tmp,
                                                   plugin_dash.length + 1);
   strxmov(plugin_name_with_prefix_ptr, plugin_dash.str, plugin_name_ptr, NullS);
 
-  if (!tmp->is_mandatory)
+  if (tmp->load_option != PLUGIN_FORCE &&
+      tmp->load_option != PLUGIN_FORCE_PLUS_PERMANENT)
   {
     /* support --skip-plugin-foo syntax */
     options[0].name= plugin_name_ptr;
@@ -3318,7 +3325,7 @@ static int test_plugin_options(MEM_ROOT *tmp_root, struct st_plugin_int *tmp,
 {
   struct sys_var_chain chain= { NULL, NULL };
   bool disable_plugin;
-  enum_plugin_load_policy plugin_load_policy= tmp->is_mandatory ? PLUGIN_FORCE : PLUGIN_ON;
+  enum_plugin_load_option plugin_load_option= tmp->load_option;
 
   MEM_ROOT *mem_root= alloc_root_inited(&tmp->mem_root) ?
                       &tmp->mem_root : &plugin_mem_root;
@@ -3339,7 +3346,7 @@ static int test_plugin_options(MEM_ROOT *tmp_root, struct st_plugin_int *tmp,
   */
   if (!(my_strcasecmp(&my_charset_latin1, tmp->name.str, "federated") &&
       my_strcasecmp(&my_charset_latin1, tmp->name.str, "ndbcluster")))
-    plugin_load_policy= PLUGIN_OFF;
+    plugin_load_option= PLUGIN_OFF;
 
   for (opt= tmp->plugin->system_vars; opt && *opt; opt++)
     count+= 2; /* --{plugin}-{optname} and --plugin-{plugin}-{optname} */
@@ -3363,8 +3370,9 @@ static int test_plugin_options(MEM_ROOT *tmp_root, struct st_plugin_int *tmp,
       We adjust the default value to account for the hardcoded exceptions
       we have set for the federated and ndbcluster storage engines.
     */
-    if (!tmp->is_mandatory)
-      opts[0].def_value= opts[1].def_value= plugin_load_policy;
+    if (tmp->load_option != PLUGIN_FORCE &&
+        tmp->load_option != PLUGIN_FORCE_PLUS_PERMANENT)
+      opts[0].def_value= opts[1].def_value= plugin_load_option;
 
     error= handle_options(argc, &argv, opts, NULL);
     (*argc)++; /* add back one for the program name */
@@ -3379,12 +3387,13 @@ static int test_plugin_options(MEM_ROOT *tmp_root, struct st_plugin_int *tmp,
      Set plugin loading policy from option value. First element in the option
      list is always the <plugin name> option value.
     */
-    if (!tmp->is_mandatory)
-      plugin_load_policy= (enum_plugin_load_policy)*(ulong*)opts[0].value;
+    if (tmp->load_option != PLUGIN_FORCE &&
+        tmp->load_option != PLUGIN_FORCE_PLUS_PERMANENT)
+      plugin_load_option= (enum_plugin_load_option) *(ulong*) opts[0].value;
   }
 
-  disable_plugin= (plugin_load_policy == PLUGIN_OFF);
-  tmp->is_mandatory= (plugin_load_policy == PLUGIN_FORCE);
+  disable_plugin= (plugin_load_option == PLUGIN_OFF);
+  tmp->load_option= plugin_load_option;
 
   /*
     If the plugin is disabled it should not be initialized.