init

db_include/access/bufmask.h

@@ -0,0 +1,32 @@
+/*-------------------------------------------------------------------------
+ *
+ * bufmask.h
+ *	  Definitions for buffer masking routines, used to mask certain bits
+ *	  in a page which can be different when the WAL is generated
+ *	  and when the WAL is applied. This is really the job of each
+ *	  individual rmgr, but we make things easier by providing some
+ *	  common routines to handle cases which occur in multiple rmgrs.
+ *
+ * Portions Copyright (c) 2016-2021, PostgreSQL Global Development Group
+ *
+ * src/include/access/bufmask.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef BUFMASK_H
+#define BUFMASK_H
+
+#include "storage/block.h"
+#include "storage/bufmgr.h"
+
+/* Marker used to mask pages consistently */
+#define MASK_MARKER		0
+
+extern void mask_page_lsn_and_checksum(Page page);
+extern void mask_page_hint_bits(Page page);
+extern void mask_unused_space(Page page);
+extern void mask_lp_flags(Page page);
+extern void mask_page_content(Page page);
+
+#endif