Move WAL-related definitions from dbcommands.h to separate header file.

This makes it easier to write frontend programs that needs to understand
the WAL record format of CREATE/DROP DATABASE. dbcommands.h cannot easily
be #included in a frontend program, because it pulls in other header files
that need backend stuff, but the new dbcommands_xlog.h header file has
fewer dependencies.

1 files changed, 44 insertions, 0 deletions

diff --git a/src/include/commands/dbcommands_xlog.h b/src/include/commands/dbcommands_xlog.h
new file mode 100644
index 00000000000..71ccf5e3553
--- /dev/null
+++ b/src/include/commands/dbcommands_xlog.h
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+ *
+ * dbcommands_xlog.h
+ *		Database resource manager XLOG definitions (create/drop database).
+ *
+ *
+ * Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/commands/dbcommands_xlog.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef DBCOMMANDS_XLOG_H
+#define DBCOMMANDS_XLOG_H
+
+#include "access/xlogreader.h"
+#include "lib/stringinfo.h"
+
+/* record types */
+#define XLOG_DBASE_CREATE		0x00
+#define XLOG_DBASE_DROP			0x10
+
+typedef struct xl_dbase_create_rec
+{
+	/* Records copying of a single subdirectory incl. contents */
+	Oid			db_id;
+	Oid			tablespace_id;
+	Oid			src_db_id;
+	Oid			src_tablespace_id;
+} xl_dbase_create_rec;
+
+typedef struct xl_dbase_drop_rec
+{
+	/* Records dropping of a single subdirectory incl. contents */
+	Oid			db_id;
+	Oid			tablespace_id;
+} xl_dbase_drop_rec;
+
+extern void dbase_redo(XLogReaderState *rptr);
+extern void dbase_desc(StringInfo buf, XLogReaderState *rptr);
+extern const char *dbase_identify(uint8 info);
+
+#endif   /* DBCOMMANDS_XLOG_H */