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barriers: Don't allow releasing the pointer on other client's barriers 

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
This commit is contained in:
Peter Hutterer 2012-12-06 12:06:28 +10:00
parent 2884b24929
commit a1ee26e624
1 changed files with 3 additions and 0 deletions
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3
Xi/xibarriers.c
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@ -591,6 +591,9 @@ ProcXIBarrierReleasePointer(ClientPtr client)
return err; return err;
} }
if (CLIENT_ID(barrier_id) != client->index)
return BadAccess;
barrier = container_of(b, struct PointerBarrierClient, barrier); barrier = container_of(b, struct PointerBarrierClient, barrier);
if (barrier->barrier_event_id == event_id) if (barrier->barrier_event_id == event_id)
barrier->release_event_id = event_id; barrier->release_event_id = event_id;