Changes from the innodb-5.0-ss115 snapshot.

 Fixed bugs:
 BUG#15991: "innodb-file-per-table + symlink database + rename = crash"
 BUG#15650: "DELETE with LEFT JOIN crashes server"
 BUG#15308: "Problem of Order with Enum Column in Primary Key"
 BUG#14189: "VARBINARY and BINARY variables: trailing space ignored"


innobase/include/data0type.h:
  Changes from the innodb-5.0-ss115 snapshot.
innobase/include/data0type.ic:
  Changes from the innodb-5.0-ss115 snapshot.
   Fixed bug #14189. dtype_get_pad_char(): Do not pad VARBINARY
   or BINARY cloumns.
innobase/include/lock0lock.h:
  Changes from the innodb-5.0-ss115 snapshot.
innobase/include/os0file.h:
  Changes from the innodb-5.0-ss115 snapshot.
   os_file_handle_error(): Map the error codes EXDEV, ENOTDIR, and
   EISDIR to the new code OS_FILE_PATH_ERROR. Treat this code as
   OS_FILE_PATH_ERROR. This fixes the crash on RENAME TABLE when
   the .ibd file is a symbolic link to a different file system
   (bug#15991).
innobase/include/row0mysql.h:
  Changes from the innodb-5.0-ss115 snapshot.
innobase/lock/lock0lock.c:
  Changes from the innodb-5.0-ss115 snapshot.
   lock_rec_unlock(): Initialize local variable release_lock,
   in order to avoid dereferencing an uninitialized pointer
   when no lock exists on rec.
innobase/os/os0file.c:
  Changes from the innodb-5.0-ss115 snapshot.
   os_file_handle_error(): Map the error codes EXDEV, ENOTDIR, and
     EISDIR to the new code OS_FILE_PATH_ERROR. Treat this code as
     OS_FILE_PATH_ERROR. This fixes the crash on RENAME TABLE when
     the .ibd file is a symbolic link to a different file system
     (bug#15991).
   Protect the increment and decrement operations on the statistic
     variables os_n_pending_writes/reads with os_file_count_mutes.
innobase/row/row0ins.c:
  Changes from the innodb-5.0-ss115 snapshot.
   Fixed bug #14189. row_ins_cascade_calc_update_vec(): Refuse
   ON UPDATE_CASCADE when trying to change the length of of a
   VARBINARY column that refers to or is referenced by a BINARY
   column. BINARY columns are no longer padded on comparison,
   and thus they cannot be padded on storage either.
innobase/row/row0mysql.c:
  Changes from the innodb-5.0-ss115 snapshot.
   Fixed bug on unlock_row. In a unlock_row we may unlock
   only the latest lock granted to this transaction to the row.
innobase/row/row0sel.c:
  Changes from the innodb-5.0-ss115 snapshot.
   Fixed bug #15308.
   Fixed bug #14189: innobase_init(): Assert that
     DATA_MYSQL_BINARY_CHARSET_COLL == my_charset_bin.number.
   After review fixes for unlock bug where unlock released all
     locks transaction requested for a row. Only a latest requested
     lock to a row should be released. Update function comments to
     reflect current state. Persistent cursor should be stored
     whenever select lock type != LOCK_NONE.
innobase/trx/trx0trx.c:
  Changes from the innodb-5.0-ss115 snapshot.
   trx_commit_off_kernel(): Do not write empty trx->mysql_log_file_name.
mysql-test/r/innodb.result:
  Changes from the innodb-5.0-ss115 snapshot.
mysql-test/t/innodb.test:
  Changes from the innodb-5.0-ss115 snapshot.
sql/ha_innodb.cc:
  Changes from the innodb-5.0-ss115 snapshot.
   Fixed bug #15308.
   Fixed bug #14189: innobase_init(): Assert that
     DATA_MYSQL_BINARY_CHARSET_COLL == my_charset_bin.number.
   After review fixes for unlock bug where unlock released all
     locks transaction requested for a row. Only a latest requested
     lock to a row should be released. Update function comments to
     reflect current state. Persistent cursor should be stored
     whenever select lock type != LOCK_NONE.
mysql-test/r/innodb_unsafe_binlog.result:
  Changes from the innodb-5.0-ss115 snapshot.
mysql-test/t/innodb_unsafe_binlog-master.opt:
  Changes from the innodb-5.0-ss115 snapshot.
mysql-test/t/innodb_unsafe_binlog.test:
  Changes from the innodb-5.0-ss115 snapshot.
   Added testcases for bug #15650.

1 files changed, 70 insertions, 1 deletions

diff --git a/innobase/lock/lock0lock.c b/innobase/lock/lock0lock.c
index 7844991613f..06475c8ef7e 100644
--- a/innobase/lock/lock0lock.c
+++ b/innobase/lock/lock0lock.c
@@ -2392,7 +2392,7 @@ lock_rec_free_all_from_discard_page(
 /*****************************************************************
 Resets the lock bits for a single record. Releases transactions waiting for
 lock requests here. */
-
+static
 void
 lock_rec_reset_and_release_wait(
 /*============================*/
@@ -3760,6 +3760,75 @@ lock_table_dequeue(
 
 /*=========================== LOCK RELEASE ==============================*/
 
+/*****************************************************************
+Removes a granted record lock of a transaction from the queue and grants
+locks to other transactions waiting in the queue if they now are entitled
+to a lock. */
+
+void
+lock_rec_unlock(
+/*============*/
+	trx_t*	trx,  		/* in: transaction that has set a record
+				lock */
+	rec_t*	rec,		/* in: record */
+	ulint	lock_mode)	/* in: LOCK_S or LOCK_X */
+{
+	lock_t*	lock;
+	lock_t*	release_lock	= NULL;
+	ulint	heap_no;
+
+	ut_ad(trx && rec);
+
+	mutex_enter(&kernel_mutex);
+
+	heap_no = rec_get_heap_no(rec, page_rec_is_comp(rec));
+
+	lock = lock_rec_get_first(rec);
+
+	/* Find the last lock with the same lock_mode and transaction
+	from the record. */
+
+	while (lock != NULL) {
+		if (lock->trx == trx && lock_get_mode(lock) == lock_mode) {
+			release_lock = lock;
+			ut_a(!lock_get_wait(lock));
+		}
+
+		lock = lock_rec_get_next(rec, lock);
+	}
+
+	/* If a record lock is found, release the record lock */
+
+	if (UNIV_LIKELY(release_lock != NULL)) {
+		lock_rec_reset_nth_bit(release_lock, heap_no);
+	} else {
+		mutex_exit(&kernel_mutex);
+		ut_print_timestamp(stderr);
+		fprintf(stderr,
+"  InnoDB: Error: unlock row could not find a %lu mode lock on the record\n",
+			(ulong)lock_mode);
+
+		return;
+	}
+
+	/* Check if we can now grant waiting lock requests */
+
+	lock = lock_rec_get_first(rec);
+
+	while (lock != NULL) {
+		if (lock_get_wait(lock)
+			&& !lock_rec_has_to_wait_in_queue(lock)) {
+
+			/* Grant the lock */
+			lock_grant(lock);
+		}
+
+		lock = lock_rec_get_next(rec, lock);
+	}
+
+	mutex_exit(&kernel_mutex);
+} 
+
 /*************************************************************************
 Releases a table lock.
 Releases possible other transactions waiting for this lock. */