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This patch implement the TODO [ALTER DATABASE foo OWNER TO bar].

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It was necessary to touch in grammar and create a new node to make home
to the new syntax. The command is also supported in E
CPG. Doc updates are attached too. Only superusers can change the owner
of the database. New owners don't need any aditional
privileges.

Euler Taveira de Oliveira
This commit is contained in:
Bruce Momjian
2004-05-26 13:57:04 +00:00
parent d0b4399d81
commit cfbfdc557d
11 changed files with 128 additions and 14 deletions
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48
src/backend/commands/dbcommands.c
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.133 2004/05/26 04:41:10 neilc Exp $
* $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.134 2004/05/26 13:56:45 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -776,6 +776,52 @@ AlterDatabaseSet(AlterDatabaseSetStmt *stmt)
}
/*
* ALTER DATABASE name OWNER TO newowner
*/
void
AlterDatabaseOwner(const char *dbname, const char *newowner)
{
AclId newdatdba;
HeapTuple tuple,
newtuple;
Relation rel;
ScanKeyData scankey;
SysScanDesc scan;
rel = heap_openr(DatabaseRelationName, RowExclusiveLock);
ScanKeyInit(&scankey,
Anum_pg_database_datname,
BTEqualStrategyNumber, F_NAMEEQ,
NameGetDatum(dbname));
scan = systable_beginscan(rel, DatabaseNameIndex, true,
SnapshotNow, 1, &scankey);
tuple = systable_getnext(scan);
if (!HeapTupleIsValid(tuple))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_DATABASE),
errmsg("database \"%s\" does not exist", dbname)));
/* obtain sysid of proposed owner */
newdatdba = get_usesysid(newowner); /* will ereport if no such user */
/* changing owner's database for someone else: must be superuser */
/* note that the someone else need not have any permissions */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to change owner's database for another user")));
/* change owner */
newtuple = heap_copytuple(tuple);
((Form_pg_database) GETSTRUCT(newtuple))->datdba = newdatdba;
simple_heap_update(rel, &tuple->t_self, newtuple);
CatalogUpdateIndexes(rel, newtuple);
systable_endscan(scan);
heap_close(rel, NoLock);
}
/*
* Helper functions