database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-27 23:21:58 +03:00
Code Activity

Adjust permissions checking for ALTER OWNER commands: instead of

Browse Source 
requiring superuserness always, allow an owner to reassign ownership
to any role he is a member of, if that role would have the right to
create a similar object.  These three requirements essentially state
that the would-be alterer has enough privilege to DROP the existing
object and then re-CREATE it as the new role; so we might as well
let him do it in one step.  The ALTER TABLESPACE case is a bit
squirrely, but the whole concept of non-superuser tablespace owners
is pretty dubious anyway.  Stephen Frost, code review by Tom Lane.
This commit is contained in:
Tom Lane
2005-07-14 21:46:30 +00:00
parent bd15782164
commit aa1110624c
12 changed files with 229 additions and 109 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
src/backend/commands/operatorcmds.c
View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/operatorcmds.c,v 1.23 2005/07/07 20:39:58 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/operatorcmds.c,v 1.24 2005/07/14 21:46:29 tgl Exp $
*
* DESCRIPTION
* The "DefineFoo" routines take the parse tree and pick out the
@ -274,6 +274,7 @@ AlterOperatorOwner(List *name, TypeName *typeName1, TypeName *typeName2,
Oid operOid;
HeapTuple tup;
Relation rel;
AclResult aclresult;
Form_pg_operator oprForm;
rel = heap_open(OperatorRelationId, RowExclusiveLock);
@ -295,11 +296,20 @@ AlterOperatorOwner(List *name, TypeName *typeName1, TypeName *typeName2,
*/
if (oprForm->oprowner != newOwnerId)
{
/* Otherwise, must be superuser to change object ownership */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to change owner")));
/* Otherwise, must be owner of the existing object */
if (!pg_oper_ownercheck(operOid,GetUserId()))
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_OPER,
NameListToString(name));
/* Must be able to become new owner */
check_is_member_of_role(GetUserId(), newOwnerId);
/* New owner must have CREATE privilege on namespace */
aclresult = pg_namespace_aclcheck(oprForm->oprnamespace, newOwnerId,
ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(oprForm->oprnamespace));
/*
* Modify the owner --- okay to scribble on tup because it's a