From 9aa5a86a801d6af6ed40e1ce16a8b7b1c83ea3e2 Mon Sep 17 00:00:00 2001
From: "heikki@hundin.mysql.fi" <>
Date: Wed, 31 Aug 2005 14:17:05 +0300
Subject: [PATCH] ha_innodb.cc:   Fix bug #12852 : do not increment the open
 handle count to a table if the table does not have an .ibd file and InnoDB
 decides to return an error from the ::open() function; then the table can be
 dropped even if the user has tried to open it

---
 sql/ha_innodb.cc | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/sql/ha_innodb.cc b/sql/ha_innodb.cc
index e8279982da5..b4e5092ee4a 100644
--- a/sql/ha_innodb.cc
+++ b/sql/ha_innodb.cc
@@ -1651,6 +1651,8 @@ ha_innobase::open(
     		my_free((char*) upd_buff, MYF(0));
     		my_errno = ENOENT;
 
+		dict_table_decrement_handle_count(ib_table);
+
     		DBUG_RETURN(1);
   	}
 
@@ -5439,6 +5441,19 @@ ha_innobase::store_lock(
 
 	if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK) {
 
+		if (lock_type == TL_READ && thd->in_lock_tables) {
+			/* We come here if MySQL is processing LOCK TABLES
+			... READ LOCAL. MyISAM under that table lock type
+			reads the table as it was at the time the lock was
+			granted (new inserts are allowed, but not seen by the
+			reader). To get a similar effect on an InnoDB table,
+			we must use LOCK TABLES ... READ. We convert the lock
+			type here, so that for InnoDB, READ LOCAL is
+			equivalent to READ. */
+
+			lock_type = TL_READ_NO_INSERT;
+		}
+
     		/* If we are not doing a LOCK TABLE or DISCARD/IMPORT
 		TABLESPACE, then allow multiple writers */