3 files changed, 24 insertions, 0 deletions
diff --git a/innobase/include/fil0fil.h b/innobase/include/fil0fil.h
index 4f78fdb2fd7..ad3149f0b36 100644
--- a/innobase/include/fil0fil.h
+++ b/innobase/include/fil0fil.h
@@ -386,6 +386,14 @@ fil_space_release_free_extents(
 /*===========================*/
 	ulint	id,		/* in: space id */
 	ulint	n_reserved);	/* in: how many one reserved */
+/***********************************************************************
+Gets the number of reserved extents. If the database is silent, this number
+should be zero. */
+
+ulint
+fil_space_get_n_reserved_extents(
+/*=============================*/
+	ulint	id);		/* in: space id */
 
 typedef	struct fil_space_struct	fil_space_t;
 
diff --git a/innobase/include/log0log.h b/innobase/include/log0log.h
index e79e914e4f6..24ec28a56e6 100644
--- a/innobase/include/log0log.h
+++ b/innobase/include/log0log.h
@@ -513,6 +513,15 @@ log_print(
 /*======*/
 	char*	buf,	/* in/out: buffer where to print */
 	char*	buf_end);/* in: buffer end */
+/**********************************************************
+Peeks the current lsn. */
+
+ibool
+log_peek_lsn(
+/*=========*/
+			/* out: TRUE if success, FALSE if could not get the
+			log system mutex */
+	dulint*	lsn);	/* out: if returns TRUE, current lsn is here */
 /**************************************************************************
 Refreshes the statistics used to print per-second averages. */
 
@@ -785,6 +794,11 @@ struct log_struct{
 					called */
 
 	/* Fields involved in checkpoints */
+	ulint		log_group_capacity; /* capacity of the log group; if
+					the checkpoint age exceeds this, it is
+					a serious error because it is possible
+					we will then overwrite log and spoil
+					crash recovery */
 	ulint		max_modified_age_async;
 					/* when this recommended value for lsn
 					- buf_pool_get_oldest_modification()
diff --git a/innobase/include/log0recv.h b/innobase/include/log0recv.h
index 7418e4abf1b..e5a5bc05563 100644
--- a/innobase/include/log0recv.h
+++ b/innobase/include/log0recv.h
@@ -333,6 +333,8 @@ extern ibool		recv_recovery_on;
 extern ibool		recv_no_ibuf_operations;
 extern ibool		recv_needed_recovery;
 
+extern ibool            recv_lsn_checks_on;
+
 extern ibool		recv_is_making_a_backup;
 extern ulint		recv_max_parsed_page_no;