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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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45
src/backend/commands/schemacmds.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/schemacmds.c,v 1.20 2004/06/25 21:55:53 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/schemacmds.c,v 1.21 2004/08/01 20:30:48 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -320,7 +320,7 @@ AlterSchemaOwner(const char *name, AclId newOwnerSysId)
rel = heap_openr(NamespaceRelationName, RowExclusiveLock);
tup = SearchSysCacheCopy(NAMESPACENAME,
tup = SearchSysCache(NAMESPACENAME,
CStringGetDatum(name),
0, 0, 0);
if (!HeapTupleIsValid(tup))
@ -335,20 +335,49 @@ AlterSchemaOwner(const char *name, AclId newOwnerSysId)
*/
if (nspForm->nspowner != newOwnerSysId)
{
Datum repl_val[Natts_pg_namespace];
char repl_null[Natts_pg_namespace];
char repl_repl[Natts_pg_namespace];
Acl *newAcl;
Datum aclDatum;
bool isNull;
HeapTuple newtuple;
/* Otherwise, must be superuser to change object ownership */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to change owner")));
/* Modify the owner --- okay to scribble on tup because it's a copy */
nspForm->nspowner = newOwnerSysId;
memset(repl_null, ' ', sizeof(repl_null));
memset(repl_repl, ' ', sizeof(repl_repl));
simple_heap_update(rel, &tup->t_self, tup);
repl_repl[Anum_pg_namespace_nspowner - 1] = 'r';
repl_val[Anum_pg_namespace_nspowner - 1] = Int32GetDatum(newOwnerSysId);
CatalogUpdateIndexes(rel, tup);
/*
* Determine the modified ACL for the new owner. This is only
* necessary when the ACL is non-null.
*/
aclDatum = SysCacheGetAttr(NAMESPACENAME, tup,
Anum_pg_namespace_nspacl,
&isNull);
if (!isNull)
{
newAcl = aclnewowner(DatumGetAclP(aclDatum),
nspForm->nspowner, newOwnerSysId);
repl_repl[Anum_pg_namespace_nspacl - 1] = 'r';
repl_val[Anum_pg_namespace_nspacl - 1] = PointerGetDatum(newAcl);
}
newtuple = heap_modifytuple(tup, rel, repl_val, repl_null, repl_repl);
simple_heap_update(rel, &newtuple->t_self, newtuple);
CatalogUpdateIndexes(rel, newtuple);
heap_freetuple(newtuple);
}
ReleaseSysCache(tup);
heap_close(rel, NoLock);
heap_freetuple(tup);
}