database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-20 15:22:23 +03:00
Code Activity

Allow a non-superuser database owner to vacuum all tables in his

Browse Source 
database, including system catalogs (but not the shared catalogs,
since they don't really belong to his database).  This is per recent
mailing list discussion.  Clean up some other code that also checks
for database ownerness by introducing a test function is_dbadmin().
This commit is contained in:
Tom Lane
2001-06-13 21:44:41 +00:00
parent f21e3407e6
commit 1a6bb6d877
10 changed files with 95 additions and 95 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
src/backend/utils/misc/superuser.c
View File

@ -1,35 +1,38 @@
/*-------------------------------------------------------------------------
*
* superuser.c
*
* The superuser() function. Determines if user has superuser privilege.
* Also, a function to check for the owner (datdba) of a database.
*
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/misc/superuser.c,v 1.17 2001/01/24 19:43:16 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/superuser.c,v 1.18 2001/06/13 21:44:41 tgl Exp $
*
* DESCRIPTION
* See superuser().
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/heapam.h"
#include "catalog/catname.h"
#include "catalog/pg_database.h"
#include "catalog/pg_shadow.h"
#include "utils/syscache.h"
#include "miscadmin.h"
#include "utils/fmgroids.h"
/*
* The Postgres user running this command has Postgres superuser privileges
*/
bool
superuser(void)
{
/*--------------------------------------------------------------------------
The Postgres user running this command has Postgres superuser
privileges.
--------------------------------------------------------------------------*/
bool result = false;
HeapTuple utup;
bool result;
utup = SearchSysCache(SHADOWSYSID,
ObjectIdGetDatum(GetUserId()),
@ -38,7 +41,36 @@ superuser(void)
{
result = ((Form_pg_shadow) GETSTRUCT(utup))->usesuper;
ReleaseSysCache(utup);
return result;
}
return false;
return result;
}
/*
* The Postgres user running this command is the owner of the specified
* database.
*/
bool
is_dbadmin(Oid dbid)
{
Relation pg_database;
ScanKeyData entry[1];
HeapScanDesc scan;
HeapTuple dbtuple;
int32 dba;
/* There's no syscache for pg_database, so must look the hard way */
pg_database = heap_openr(DatabaseRelationName, AccessShareLock);
ScanKeyEntryInitialize(&entry[0], 0x0,
ObjectIdAttributeNumber, F_OIDEQ,
ObjectIdGetDatum(dbid));
scan = heap_beginscan(pg_database, 0, SnapshotNow, 1, entry);
dbtuple = heap_getnext(scan, 0);
if (!HeapTupleIsValid(dbtuple))
elog(ERROR, "database %u does not exist", dbid);
dba = ((Form_pg_database) GETSTRUCT(dbtuple))->datdba;
heap_endscan(scan);
heap_close(pg_database, AccessShareLock);
/* XXX some confusion about whether userids are OID or int4 ... */
return (GetUserId() == (Oid) dba);
}