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Cause ALTER OWNER commands to update the object's ACL, replacing references

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to the old owner with the new owner.  This is not necessarily right, but
it's sure a lot more likely to be what the user wants than doing nothing.
Christopher Kings-Lynne, some rework by Tom Lane.
This commit is contained in:
Tom Lane
2004-08-01 20:30:49 +00:00
parent 35ff782d71
commit d6f8a76cf2
7 changed files with 295 additions and 47 deletions
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48
src/backend/commands/tablecmds.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.122 2004/07/21 22:31:21 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.123 2004/08/01 20:30:48 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -5115,7 +5115,7 @@ ATExecChangeOwner(Oid relationOid, int32 newOwnerSysId)
/* Get its pg_class tuple, too */
class_rel = heap_openr(RelationRelationName, RowExclusiveLock);
tuple = SearchSysCacheCopy(RELOID,
tuple = SearchSysCache(RELOID,
ObjectIdGetDatum(relationOid),
0, 0, 0);
if (!HeapTupleIsValid(tuple))
@ -5145,21 +5145,47 @@ ATExecChangeOwner(Oid relationOid, int32 newOwnerSysId)
*/
if (tuple_class->relowner != newOwnerSysId)
{
Datum repl_val[Natts_pg_class];
char repl_null[Natts_pg_class];
char repl_repl[Natts_pg_class];
Acl *newAcl;
Datum aclDatum;
bool isNull;
HeapTuple newtuple;
/* Otherwise, check that we are the superuser */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to change owner")));
/*
* Okay, this is a valid tuple: change its ownership and write to the
* heap.
*/
tuple_class->relowner = newOwnerSysId;
simple_heap_update(class_rel, &tuple->t_self, tuple);
memset(repl_null, ' ', sizeof(repl_null));
memset(repl_repl, ' ', sizeof(repl_repl));
/* Keep the catalog indexes up to date */
CatalogUpdateIndexes(class_rel, tuple);
repl_repl[Anum_pg_class_relowner - 1] = 'r';
repl_val[Anum_pg_class_relowner - 1] = Int32GetDatum(newOwnerSysId);
/*
* Determine the modified ACL for the new owner. This is only
* necessary when the ACL is non-null.
*/
aclDatum = SysCacheGetAttr(RELOID, tuple,
Anum_pg_class_relacl,
&isNull);
if (!isNull)
{
newAcl = aclnewowner(DatumGetAclP(aclDatum),
tuple_class->relowner, newOwnerSysId);
repl_repl[Anum_pg_class_relacl - 1] = 'r';
repl_val[Anum_pg_class_relacl - 1] = PointerGetDatum(newAcl);
}
newtuple = heap_modifytuple(tuple, class_rel, repl_val, repl_null, repl_repl);
simple_heap_update(class_rel, &newtuple->t_self, newtuple);
CatalogUpdateIndexes(class_rel, newtuple);
heap_freetuple(newtuple);
/*
* If we are operating on a table, also change the ownership of any
@ -5190,7 +5216,7 @@ ATExecChangeOwner(Oid relationOid, int32 newOwnerSysId)
}
}
heap_freetuple(tuple);
ReleaseSysCache(tuple);
heap_close(class_rel, RowExclusiveLock);
relation_close(target_rel, NoLock);
}