1/*-------------------------------------------------------------------------
2 *
3 * pg_largeobject.h
4 * definition of the "large object" system catalog (pg_largeobject)
5 *
6 *
7 * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/catalog/pg_largeobject.h
11 *
12 * NOTES
13 * The Catalog.pm module reads this file and derives schema
14 * information.
15 *
16 *-------------------------------------------------------------------------
17 */
18#ifndef PG_LARGEOBJECT_H
19#define PG_LARGEOBJECT_H
20
21#include "catalog/genbki.h"
22#include "catalog/pg_largeobject_d.h"
23
24/* ----------------
25 * pg_largeobject definition. cpp turns this into
26 * typedef struct FormData_pg_largeobject
27 * ----------------
28 */
29CATALOG(pg_largeobject,2613,LargeObjectRelationId)
30{
31 Oid loid; /* Identifier of large object */
32 int32 pageno; /* Page number (starting from 0) */
33
34 /* data has variable length, but we allow direct access; see inv_api.c */
35 bytea data BKI_FORCE_NOT_NULL; /* Data for page (may be
36 * zero-length) */
37} FormData_pg_largeobject;
38
39/* ----------------
40 * Form_pg_largeobject corresponds to a pointer to a tuple with
41 * the format of pg_largeobject relation.
42 * ----------------
43 */
44typedef FormData_pg_largeobject *Form_pg_largeobject;
45
46extern Oid LargeObjectCreate(Oid loid);
47extern void LargeObjectDrop(Oid loid);
48extern bool LargeObjectExists(Oid loid);
49
50#endif /* PG_LARGEOBJECT_H */
51