BUG#37148 Most callers of mysql_bin_log.write ignore the return result

This is the non-ndb part of the patch.

The return value of mysql_bin_log.write was ignored by most callers,
which may lead to inconsistent on master and slave if the transaction
was committed while the binlog was not correctly written. If
my_error() is call in mysql_bin_log.write, this could also lead to
assertion issue if my_ok() or my_error() is called after.

This fixed the problem by let the caller to check and handle the
return value of mysql_bin_log.write. This patch only adresses the
simple cases.


mysql-test/include/binlog_inject_error.inc:
  inject binlog write error when doing a query
mysql-test/suite/binlog/t/binlog_write_error.test:
  Simple test case to check if proper error is reported when injecting binlog write errors.
sql/events.cc:
  check return value of mysql_bin_log.write
sql/log.cc:
  check return value of mysql_bin_log.write
sql/log_event.cc:
  check return value of mysql_bin_log.write
sql/log_event_old.cc:
  check return value of mysql_bin_log.write
sql/mysql_priv.h:
  Change write_bin_log to return int instead of void
sql/rpl_injector.cc:
  check return value of writing binlog
sql/sp.cc:
  check return value of writing binlog
sql/sp_head.cc:
  return 1 if writing binlog failed
sql/sql_acl.cc:
  check return value of writing binlog
sql/sql_base.cc:
  check return value of writing binlog
sql/sql_class.h:
  Change binlog_show_create_table to return int
sql/sql_db.cc:
  Change write_to_binlog to return int
  check return value of writing binlog
sql/sql_delete.cc:
  check return value of writing binlog
sql/sql_insert.cc:
  check return value of writing binlog
sql/sql_load.cc:
  check return value of writing binlog
sql/sql_parse.cc:
  check return value of writing binlog
sql/sql_partition.cc:
  check return value of writing binlog
sql/sql_rename.cc:
  check return value of writing binlog
sql/sql_repl.cc:
  check return value of writing binlog
sql/sql_table.cc:
  Change write_bin_log to return int, and return 1 if there was error writing binlog
sql/sql_tablespace.cc:
  check return value of writing binlog
sql/sql_trigger.cc:
  check return value of writing binlog
sql/sql_udf.cc:
  check return value of writing binlog
sql/sql_update.cc:
  check return value of writing binlog
sql/sql_view.cc:
  check return value of writing binlog

1 files changed, 24 insertions, 17 deletions

diff --git a/sql/rpl_injector.cc b/sql/rpl_injector.cc
index 684655d1c3b..666622dbac4 100644
--- a/sql/rpl_injector.cc
+++ b/sql/rpl_injector.cc
@@ -58,10 +58,14 @@ injector::transaction::~transaction()
   my_free(the_memory, MYF(0));
 }
 
+/**
+   @retval 0 transaction committed
+   @retval 1 transaction rolled back
+ */
 int injector::transaction::commit()
 {
    DBUG_ENTER("injector::transaction::commit()");
-   m_thd->binlog_flush_pending_rows_event(true);
+   int error= m_thd->binlog_flush_pending_rows_event(true);
    /*
      Cluster replication does not preserve statement or
      transaction boundaries of the master.  Instead, a new
@@ -81,9 +85,9 @@ int injector::transaction::commit()
      is committed by committing the statement transaction
      explicitly.
    */
-   ha_autocommit_or_rollback(m_thd, 0);
-   end_trans(m_thd, COMMIT);
-   DBUG_RETURN(0);
+   error |= ha_autocommit_or_rollback(m_thd, error);
+   end_trans(m_thd, error ? ROLLBACK : COMMIT);
+   DBUG_RETURN(error);
 }
 
 int injector::transaction::use_table(server_id_type sid, table tbl)
@@ -109,16 +113,17 @@ int injector::transaction::write_row (server_id_type sid, table tbl,
 				      record_type record)
 {
    DBUG_ENTER("injector::transaction::write_row(...)");
-
-   if (int error= check_state(ROW_STATE))
+ 
+   int error= 0;
+   if (error= check_state(ROW_STATE))
      DBUG_RETURN(error);
 
    server_id_type save_id= m_thd->server_id;
    m_thd->set_server_id(sid);
-   m_thd->binlog_write_row(tbl.get_table(), tbl.is_transactional(), 
-                           cols, colcnt, record);
+   error= m_thd->binlog_write_row(tbl.get_table(), tbl.is_transactional(), 
+                                  cols, colcnt, record);
    m_thd->set_server_id(save_id);
-   DBUG_RETURN(0);
+   DBUG_RETURN(error);
 }
 
 
@@ -128,15 +133,16 @@ int injector::transaction::delete_row(server_id_type sid, table tbl,
 {
    DBUG_ENTER("injector::transaction::delete_row(...)");
 
-   if (int error= check_state(ROW_STATE))
+   int error= 0;
+   if (error= check_state(ROW_STATE))
      DBUG_RETURN(error);
 
    server_id_type save_id= m_thd->server_id;
    m_thd->set_server_id(sid);
-   m_thd->binlog_delete_row(tbl.get_table(), tbl.is_transactional(), 
-                            cols, colcnt, record);
+   error= m_thd->binlog_delete_row(tbl.get_table(), tbl.is_transactional(), 
+                                   cols, colcnt, record);
    m_thd->set_server_id(save_id);
-   DBUG_RETURN(0);
+   DBUG_RETURN(error);
 }
 
 
@@ -146,15 +152,16 @@ int injector::transaction::update_row(server_id_type sid, table tbl,
 {
    DBUG_ENTER("injector::transaction::update_row(...)");
 
-   if (int error= check_state(ROW_STATE))
+   int error= 0;
+   if (error= check_state(ROW_STATE))
      DBUG_RETURN(error);
 
    server_id_type save_id= m_thd->server_id;
    m_thd->set_server_id(sid);
-   m_thd->binlog_update_row(tbl.get_table(), tbl.is_transactional(),
-		            cols, colcnt, before, after);
+   error= m_thd->binlog_update_row(tbl.get_table(), tbl.is_transactional(),
+                                   cols, colcnt, before, after);
    m_thd->set_server_id(save_id);
-   DBUG_RETURN(0);
+   DBUG_RETURN(error);
 }