[cap-talk] Confused Deputy, multiple authorities - Norm?

[Valerio Bellizzomi]

On 28/10/2006, at 23.27, Valerio Bellizzomi wrote:

>On 25/10/2006, at 9.27, David Wagner wrote:
>
>>In article <200610251204590230.001880CC at smtp.village.it> you write:
>>>Can this problem be resolved by designing the "check+write" as an
atomic
>>>operation ?
>>
>>Yes.  That's exactly what the standard advice does.  You switch hats
>>to take on the appropriate userid, then go ahead and issue the write
>>request, and the OS will perform the check atomically before executing
>>the write operation.
>
>I lack a definition of "the standard advice" term, but if the same can be
>applied to the "check+read", in this case the problem should be at least
>partially resolved ?

In hindsight this was an obvious question.

val