130 lines
3.5 KiB
C
130 lines
3.5 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_database.h
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* definition of the "database" system catalog (pg_database)
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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_database.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_DATABASE_H
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#define PG_DATABASE_H
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#include "catalog/genbki.h"
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#include "catalog/pg_database_d.h"
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/* ----------------
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* pg_database definition. cpp turns this into
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* typedef struct FormData_pg_database
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* ----------------
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*/
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CATALOG(pg_database,1262,DatabaseRelationId) BKI_SHARED_RELATION BKI_ROWTYPE_OID(1248,DatabaseRelation_Rowtype_Id) BKI_SCHEMA_MACRO
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{
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/* oid */
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Oid oid;
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/* database name */
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NameData datname;
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/* owner of database */
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Oid datdba BKI_DEFAULT(POSTGRES) BKI_LOOKUP(pg_authid);
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/* character encoding */
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int32 encoding;
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/* locale provider, see pg_collation.collprovider */
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char datlocprovider;
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/* allowed as CREATE DATABASE template? */
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bool datistemplate;
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/* new connections allowed? */
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bool datallowconn;
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/* database has login event triggers? */
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bool dathasloginevt;
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/*
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* Max connections allowed. Negative values have special meaning, see
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* DATCONNLIMIT_* defines below.
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*/
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int32 datconnlimit;
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/* all Xids < this are frozen in this DB */
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TransactionId datfrozenxid;
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/* all multixacts in the DB are >= this */
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TransactionId datminmxid;
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/* default table space for this DB */
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Oid dattablespace BKI_LOOKUP(pg_tablespace);
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#ifdef CATALOG_VARLEN /* variable-length fields start here */
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/* LC_COLLATE setting */
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text datcollate BKI_FORCE_NOT_NULL;
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/* LC_CTYPE setting */
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text datctype BKI_FORCE_NOT_NULL;
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/* ICU locale ID */
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text datlocale;
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/* ICU collation rules */
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text daticurules;
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/* provider-dependent version of collation data */
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text datcollversion BKI_DEFAULT(_null_);
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/* access permissions */
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aclitem datacl[1];
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#endif
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} FormData_pg_database;
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/* ----------------
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* Form_pg_database corresponds to a pointer to a tuple with
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* the format of pg_database relation.
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* ----------------
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*/
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typedef FormData_pg_database *Form_pg_database;
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DECLARE_TOAST_WITH_MACRO(pg_database, 4177, 4178, PgDatabaseToastTable, PgDatabaseToastIndex);
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DECLARE_UNIQUE_INDEX(pg_database_datname_index, 2671, DatabaseNameIndexId, pg_database, btree(datname name_ops));
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DECLARE_UNIQUE_INDEX_PKEY(pg_database_oid_index, 2672, DatabaseOidIndexId, pg_database, btree(oid oid_ops));
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MAKE_SYSCACHE(DATABASEOID, pg_database_oid_index, 4);
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/*
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* pg_database.dat contains an entry for template1, but not for the template0
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* or postgres databases, because those are created later in initdb.
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* However, we still want to manually assign the OIDs for template0 and
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* postgres, so declare those here.
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*/
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DECLARE_OID_DEFINING_MACRO(Template0DbOid, 4);
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DECLARE_OID_DEFINING_MACRO(PostgresDbOid, 5);
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/*
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* Special values for pg_database.datconnlimit. Normal values are >= 0.
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*/
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#define DATCONNLIMIT_UNLIMITED -1 /* no limit */
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/*
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* A database is set to invalid partway through being dropped. Using
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* datconnlimit=-2 for this purpose isn't particularly clean, but is
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* backpatchable.
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*/
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#define DATCONNLIMIT_INVALID_DB -2
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extern bool database_is_invalid_form(Form_pg_database datform);
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extern bool database_is_invalid_oid(Oid dboid);
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#endif /* PG_DATABASE_H */
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