mirror of
https://github.com/postgres/postgres.git
synced 2026-02-16 17:19:08 -05:00
ff90ee6145
Commit aac2c9b4fd mandated such locking
and attempted to fulfill that mandate, but it missed REASSIGN OWNED.
Hence, it remained possible to lose VACUUM's inplace update of
datfrozenxid if a REASSIGN OWNED processed that database at the same
time. This didn't affect the other inplace-updated catalog, pg_class.
For pg_class, REASSIGN OWNED calls ATExecChangeOwner() instead of the
generic AlterObjectOwner_internal(), and ATExecChangeOwner() fulfills
the locking mandate.
Like in GRANT, implement this by following the locking protocol for any
catalog subject to the generic AlterObjectOwner_internal(). It would
suffice to do this for IsInplaceUpdateOid() catalogs only. Back-patch
to v13 (all supported versions).
Kirill Reshke. Reported by Alexander Kukushkin.
Discussion: https://postgr.es/m/CAFh8B=mpKjAy4Cuun-HP-f_vRzh2HSvYFG3rhVfYbfEBUhBAGg@mail.gmail.com
93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* objectaddress.h
|
|
* functions for working with object addresses
|
|
*
|
|
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/catalog/objectaddress.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef OBJECTADDRESS_H
|
|
#define OBJECTADDRESS_H
|
|
|
|
#include "access/htup.h"
|
|
#include "nodes/parsenodes.h"
|
|
#include "storage/lockdefs.h"
|
|
#include "utils/relcache.h"
|
|
|
|
/*
|
|
* An ObjectAddress represents a database object of any type.
|
|
*/
|
|
typedef struct ObjectAddress
|
|
{
|
|
Oid classId; /* Class Id from pg_class */
|
|
Oid objectId; /* OID of the object */
|
|
int32 objectSubId; /* Subitem within object (eg column), or 0 */
|
|
} ObjectAddress;
|
|
|
|
extern PGDLLIMPORT const ObjectAddress InvalidObjectAddress;
|
|
|
|
#define ObjectAddressSubSet(addr, class_id, object_id, object_sub_id) \
|
|
do { \
|
|
(addr).classId = (class_id); \
|
|
(addr).objectId = (object_id); \
|
|
(addr).objectSubId = (object_sub_id); \
|
|
} while (0)
|
|
|
|
#define ObjectAddressSet(addr, class_id, object_id) \
|
|
ObjectAddressSubSet(addr, class_id, object_id, 0)
|
|
|
|
extern ObjectAddress get_object_address(ObjectType objtype, Node *object,
|
|
Relation *relp,
|
|
LOCKMODE lockmode, bool missing_ok);
|
|
|
|
extern ObjectAddress get_object_address_rv(ObjectType objtype, RangeVar *rel,
|
|
List *object, Relation *relp,
|
|
LOCKMODE lockmode, bool missing_ok);
|
|
|
|
extern void check_object_ownership(Oid roleid,
|
|
ObjectType objtype, ObjectAddress address,
|
|
Node *object, Relation relation);
|
|
|
|
extern Oid get_object_namespace(const ObjectAddress *address);
|
|
|
|
extern bool is_objectclass_supported(Oid class_id);
|
|
extern const char *get_object_class_descr(Oid class_id);
|
|
extern Oid get_object_oid_index(Oid class_id);
|
|
extern int get_object_catcache_oid(Oid class_id);
|
|
extern int get_object_catcache_name(Oid class_id);
|
|
extern AttrNumber get_object_attnum_oid(Oid class_id);
|
|
extern AttrNumber get_object_attnum_name(Oid class_id);
|
|
extern AttrNumber get_object_attnum_namespace(Oid class_id);
|
|
extern AttrNumber get_object_attnum_owner(Oid class_id);
|
|
extern AttrNumber get_object_attnum_acl(Oid class_id);
|
|
extern ObjectType get_object_type(Oid class_id, Oid object_id);
|
|
extern bool get_object_namensp_unique(Oid class_id);
|
|
|
|
extern HeapTuple get_catalog_object_by_oid(Relation catalog,
|
|
AttrNumber oidcol, Oid objectId);
|
|
extern HeapTuple get_catalog_object_by_oid_extended(Relation catalog,
|
|
AttrNumber oidcol,
|
|
Oid objectId,
|
|
bool locktup);
|
|
|
|
extern char *getObjectDescription(const ObjectAddress *object,
|
|
bool missing_ok);
|
|
extern char *getObjectDescriptionOids(Oid classid, Oid objid);
|
|
|
|
extern int read_objtype_from_string(const char *objtype);
|
|
extern char *getObjectTypeDescription(const ObjectAddress *object,
|
|
bool missing_ok);
|
|
extern char *getObjectIdentity(const ObjectAddress *object,
|
|
bool missing_ok);
|
|
extern char *getObjectIdentityParts(const ObjectAddress *object,
|
|
List **objname, List **objargs,
|
|
bool missing_ok);
|
|
extern struct ArrayType *strlist_to_textarray(List *list);
|
|
|
|
extern ObjectType get_relkind_objtype(char relkind);
|
|
|
|
#endif /* OBJECTADDRESS_H */
|