1 files changed, 65 insertions, 25 deletions

diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index 24f7fdb8e61..44a9243d8f5 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -11,7 +11,7 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */
 
 #define MYSQL_LEX 1
 #include "my_global.h"
@@ -1749,6 +1749,67 @@ bool sp_process_definer(THD *thd)
 
 
 /**
+  Auxiliary call that opens and locks tables for LOCK TABLES statement
+  and initializes the list of locked tables.
+
+  @param thd     Thread context.
+  @param tables  List of tables to be locked.
+
+  @return FALSE in case of success, TRUE in case of error.
+*/
+
+static bool lock_tables_open_and_lock_tables(THD *thd, TABLE_LIST *tables)
+{
+  Lock_tables_prelocking_strategy lock_tables_prelocking_strategy;
+  uint counter;
+  TABLE_LIST *table;
+
+  thd->in_lock_tables= 1;
+
+  if (open_tables(thd, &tables, &counter, 0, &lock_tables_prelocking_strategy))
+    goto err;
+
+  /*
+    We allow to change temporary tables even if they were locked for read
+    by LOCK TABLES. To avoid a discrepancy between lock acquired at LOCK
+    TABLES time and by the statement which is later executed under LOCK TABLES
+    we ensure that for temporary tables we always request a write lock (such
+    discrepancy can cause problems for the storage engine).
+    We don't set TABLE_LIST::lock_type in this case as this might result in
+    extra warnings from THD::decide_logging_format() even though binary logging
+    is totally irrelevant for LOCK TABLES.
+  */
+  for (table= tables; table; table= table->next_global)
+    if (!table->placeholder() && table->table->s->tmp_table)
+      table->table->reginfo.lock_type= TL_WRITE;
+
+  if (lock_tables(thd, tables, counter, 0) ||
+      thd->locked_tables_list.init_locked_tables(thd))
+    goto err;
+
+  thd->in_lock_tables= 0;
+
+  return FALSE;
+
+err:
+  thd->in_lock_tables= 0;
+
+  trans_rollback_stmt(thd);
+  /*
+    Need to end the current transaction, so the storage engine (InnoDB)
+    can free its locks if LOCK TABLES locked some tables before finding
+    that it can't lock a table in its list
+  */
+  trans_commit_implicit(thd);
+  /* Close tables and release metadata locks. */
+  close_thread_tables(thd);
+  DBUG_ASSERT(!thd->locked_tables_mode);
+  thd->mdl_context.release_transactional_locks();
+  return TRUE;
+}
+
+
+/**
   Execute command saved in thd and lex->sql_command.
 
   @param thd                       Thread handle
@@ -3093,31 +3154,11 @@ end_with_restore_list:
       goto error;
 
     thd->variables.option_bits|= OPTION_TABLE_LOCK;
-    thd->in_lock_tables=1;
 
-    {
-      Lock_tables_prelocking_strategy lock_tables_prelocking_strategy;
-
-      res= (open_and_lock_tables(thd, all_tables, FALSE, 0,
-                                 &lock_tables_prelocking_strategy) ||
-            thd->locked_tables_list.init_locked_tables(thd));
-    }
-
-    thd->in_lock_tables= 0;
+    res= lock_tables_open_and_lock_tables(thd, all_tables);
 
     if (res)
     {
-      trans_rollback_stmt(thd);
-      /*
-        Need to end the current transaction, so the storage engine (InnoDB)
-        can free its locks if LOCK TABLES locked some tables before finding
-        that it can't lock a table in its list
-      */
-      trans_commit_implicit(thd);
-      /* Close tables and release metadata locks. */
-      close_thread_tables(thd);
-      DBUG_ASSERT(!thd->locked_tables_mode);
-      thd->mdl_context.release_transactional_locks();
       thd->variables.option_bits&= ~(OPTION_TABLE_LOCK);
     }
     else
@@ -3412,8 +3453,7 @@ end_with_restore_list:
             hostname_requires_resolving(user->host.str))
           push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
                               ER_WARN_HOSTNAME_WONT_WORK,
-                              ER(ER_WARN_HOSTNAME_WONT_WORK),
-                              user->host.str);
+                              ER(ER_WARN_HOSTNAME_WONT_WORK));
         // Are we trying to change a password of another user
         DBUG_ASSERT(user->host.str != 0);
 
@@ -5305,7 +5345,7 @@ mysql_new_select(LEX *lex, bool move_down)
   lex->nest_level++;
   if (lex->nest_level > (int) MAX_SELECT_NESTING)
   {
-    my_error(ER_TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT,MYF(0),MAX_SELECT_NESTING);
+    my_error(ER_TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT, MYF(0));
     DBUG_RETURN(1);
   }
   select_lex->nest_level= lex->nest_level;