84 lines
3.0 KiB
C
84 lines
3.0 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_init_privs.h
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* definition of the "initial privileges" system catalog (pg_init_privs)
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*
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* NOTE: an object is identified by the OID of the row that primarily
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* defines the object, plus the OID of the table that that row appears in.
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* For example, a function is identified by the OID of its pg_proc row
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* plus the pg_class OID of table pg_proc. This allows unique identification
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* of objects without assuming that OIDs are unique across tables.
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*
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* Since attributes don't have OIDs of their own, we identify an attribute
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* privilege by the objoid+classoid of its parent table, plus an "objsubid"
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* giving the attribute column number. "objsubid" must be zero in a privilege
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* for a table itself, so that it is distinct from any column privilege.
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* Currently, objsubid is unused and zero for all other kinds of objects.
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*
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* Because the contents of this table depend on what is done with the other
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* objects in the system (and, in particular, may change due to changes in
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* system_views.sql), there is no pg_init_privs.dat file. The initial contents
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* are loaded near the end of initdb.
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*
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*
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* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/catalog/pg_init_privs.h
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*
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* NOTES
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* The Catalog.pm module reads this file and derives schema
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* information.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_INIT_PRIVS_H
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#define PG_INIT_PRIVS_H
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#include "catalog/genbki.h"
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#include "catalog/pg_init_privs_d.h"
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/* ----------------
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* pg_init_privs definition. cpp turns this into
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* typedef struct FormData_pg_init_privs
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* ----------------
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*/
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CATALOG(pg_init_privs,3394,InitPrivsRelationId)
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{
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Oid objoid; /* OID of object itself */
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Oid classoid BKI_LOOKUP(pg_class); /* OID of table containing
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* object */
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int32 objsubid; /* column number, or 0 if not used */
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char privtype; /* from initdb or extension? */
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#ifdef CATALOG_VARLEN /* variable-length fields start here */
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aclitem initprivs[1] BKI_FORCE_NOT_NULL; /* initial privs on object */
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#endif
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} FormData_pg_init_privs;
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/* ----------------
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* Form_pg_init_privs corresponds to a pointer to a tuple with
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* the format of pg_init_privs relation.
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* ----------------
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*/
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typedef FormData_pg_init_privs * Form_pg_init_privs;
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DECLARE_TOAST(pg_init_privs, 4155, 4156);
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DECLARE_UNIQUE_INDEX_PKEY(pg_init_privs_o_c_o_index, 3395, InitPrivsObjIndexId, pg_init_privs, btree(objoid oid_ops, classoid oid_ops, objsubid int4_ops));
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/*
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* It is important to know if the initial privileges are from initdb or from an
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* extension. This enum is used to provide that differentiation and the two
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* places which populate this table (initdb and during CREATE EXTENSION, see
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* recordExtensionInitPriv()) know to use the correct values.
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*/
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typedef enum InitPrivsType
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{
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INITPRIVS_INITDB = 'i',
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INITPRIVS_EXTENSION = 'e',
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} InitPrivsType;
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#endif /* PG_INIT_PRIVS_H */
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