MDEV-19948 `SHOW GRANTS` return privileges individually update in 10.2

sql/sql_acl.cc

@@ -997,6 +997,56 @@ class User_table: public Grant_table_base
     return get_YN_as_bool(is_role());
   }
 
+  ulong get_access() const
+  {
+    ulong access= Grant_table_base::get_access();
+    if ((num_fields() <= 13) && (access & CREATE_ACL))
+      access|=REFERENCES_ACL | INDEX_ACL | ALTER_ACL;
+
+    if (num_fields() <= 18)
+    {
+      access|= LOCK_TABLES_ACL | CREATE_TMP_ACL | SHOW_DB_ACL;
+      if (access & FILE_ACL)
+        access|= REPL_CLIENT_ACL | REPL_SLAVE_ACL;
+      if (access & PROCESS_ACL)
+        access|= SUPER_ACL | EXECUTE_ACL;
+    }
+    /*
+      If it is pre 5.0.1 privilege table then map CREATE privilege on
+      CREATE VIEW & SHOW VIEW privileges.
+    */
+    if (num_fields() <= 31 && (access & CREATE_ACL))
+      access|= (CREATE_VIEW_ACL | SHOW_VIEW_ACL);
+    /*
+      If it is pre 5.0.2 privilege table then map CREATE/ALTER privilege on
+      CREATE PROCEDURE & ALTER PROCEDURE privileges.
+    */
+    if (num_fields() <= 33)
+    {
+      if (access & CREATE_ACL)
+        access|= CREATE_PROC_ACL;
+      if (access & ALTER_ACL)
+        access|= ALTER_PROC_ACL;
+    }
+    /*
+      Pre 5.0.3 did not have CREATE_USER_ACL.
+    */
+    if (num_fields() <= 36 && (access & GRANT_ACL))
+      access|= CREATE_USER_ACL;
+    /*
+      If it is pre 5.1.6 privilege table then map CREATE privilege on
+      CREATE|ALTER|DROP|EXECUTE EVENT.
+    */
+    if (num_fields() <= 37 && (access & SUPER_ACL))
+      access|= EVENT_ACL;
+    /*
+      If it is pre 5.1.6 privilege then map TRIGGER privilege on CREATE.
+    */
+    if (num_fields() <= 38 && (access & SUPER_ACL))
+      access|= TRIGGER_ACL;
+
+    return access & GLOBAL_ACLS;
+  }
 
  private:
   friend class Grant_tables;
@@ -1974,42 +2024,6 @@ static bool acl_load(THD *thd, const Grant_tables& tables)
 
     {
       user.access= user_table.get_access() & GLOBAL_ACLS;
-      /*
-        if it is pre 5.0.1 privilege table then map CREATE privilege on
-        CREATE VIEW & SHOW VIEW privileges
-      */
-      if (user_table.num_fields() <= 31 && (user.access & CREATE_ACL))
-        user.access|= (CREATE_VIEW_ACL | SHOW_VIEW_ACL);
-
-      /*
-        if it is pre 5.0.2 privilege table then map CREATE/ALTER privilege on
-        CREATE PROCEDURE & ALTER PROCEDURE privileges
-      */
-      if (user_table.num_fields() <= 33 && (user.access & CREATE_ACL))
-        user.access|= CREATE_PROC_ACL;
-      if (user_table.num_fields() <= 33 && (user.access & ALTER_ACL))
-        user.access|= ALTER_PROC_ACL;
-
-      /*
-        pre 5.0.3 did not have CREATE_USER_ACL
-      */
-      if (user_table.num_fields() <= 36 && (user.access & GRANT_ACL))
-        user.access|= CREATE_USER_ACL;
-
-
-      /*
-        if it is pre 5.1.6 privilege table then map CREATE privilege on
-        CREATE|ALTER|DROP|EXECUTE EVENT
-      */
-      if (user_table.num_fields() <= 37 && (user.access & SUPER_ACL))
-        user.access|= EVENT_ACL;
-
-      /*
-        if it is pre 5.1.6 privilege then map TRIGGER privilege on CREATE.
-      */
-      if (user_table.num_fields() <= 38 && (user.access & SUPER_ACL))
-        user.access|= TRIGGER_ACL;
-
       user.sort= get_sort(2, user.host.hostname, user.user.str);
       user.hostname_length= safe_strlen(user.host.hostname);
       user.user_resource.user_conn= 0;