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db_include/catalog/pg_largeobject.h

@@ -0,0 +1,54 @@
+/*-------------------------------------------------------------------------
+ *
+ * pg_largeobject.h
+ *	  definition of the "large object" system catalog (pg_largeobject)
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/catalog/pg_largeobject.h
+ *
+ * NOTES
+ *	  The Catalog.pm module reads this file and derives schema
+ *	  information.
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_LARGEOBJECT_H
+#define PG_LARGEOBJECT_H
+
+#include "catalog/genbki.h"
+#include "catalog/pg_largeobject_d.h"
+
+/* ----------------
+ *		pg_largeobject definition.  cpp turns this into
+ *		typedef struct FormData_pg_largeobject
+ * ----------------
+ */
+CATALOG(pg_largeobject,2613,LargeObjectRelationId)
+{
+	Oid			loid BKI_LOOKUP(pg_largeobject_metadata);	/* Identifier of large
+															 * object */
+	int32		pageno;			/* Page number (starting from 0) */
+
+	/* data has variable length, but we allow direct access; see inv_api.c */
+	bytea		data BKI_FORCE_NOT_NULL;	/* Data for page (may be
+											 * zero-length) */
+} FormData_pg_largeobject;
+
+/* ----------------
+ *		Form_pg_largeobject corresponds to a pointer to a tuple with
+ *		the format of pg_largeobject relation.
+ * ----------------
+ */
+typedef FormData_pg_largeobject *Form_pg_largeobject;
+
+DECLARE_UNIQUE_INDEX_PKEY(pg_largeobject_loid_pn_index, 2683, on pg_largeobject using btree(loid oid_ops, pageno int4_ops));
+#define LargeObjectLOidPNIndexId  2683
+
+extern Oid	LargeObjectCreate(Oid loid);
+extern void LargeObjectDrop(Oid loid);
+extern bool LargeObjectExists(Oid loid);
+
+#endif							/* PG_LARGEOBJECT_H */