1 files changed, 47 insertions, 0 deletions
diff --git a/src/backend/access/rmgrdesc/relmapdesc.c b/src/backend/access/rmgrdesc/relmapdesc.c
new file mode 100644
index 0000000..82ad51e
--- /dev/null
+++ b/src/backend/access/rmgrdesc/relmapdesc.c
@@ -0,0 +1,47 @@
+/*-------------------------------------------------------------------------
+ *
+ * relmapdesc.c
+ *	  rmgr descriptor routines for utils/cache/relmapper.c
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *	  src/backend/access/rmgrdesc/relmapdesc.c
+ *
+ *-------------------------------------------------------------------------
+ */
+#include "postgres.h"
+
+#include "utils/relmapper.h"
+
+void
+relmap_desc(StringInfo buf, XLogReaderState *record)
+{
+	char	   *rec = XLogRecGetData(record);
+	uint8		info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
+
+	if (info == XLOG_RELMAP_UPDATE)
+	{
+		xl_relmap_update *xlrec = (xl_relmap_update *) rec;
+
+		appendStringInfo(buf, "database %u tablespace %u size %d",
+						 xlrec->dbid, xlrec->tsid, xlrec->nbytes);
+	}
+}
+
+const char *
+relmap_identify(uint8 info)
+{
+	const char *id = NULL;
+
+	switch (info & ~XLR_INFO_MASK)
+	{
+		case XLOG_RELMAP_UPDATE:
+			id = "UPDATE";
+			break;
+	}
+
+	return id;
+}