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    SubjectRe: Subtle MM bug


    On Thu, 11 Jan 2001, Stephen C. Tweedie wrote:

    > > And how is that different from the current situation?
    >
    > It's not, which is the point I was making: COW doesn't actually solve
    > the pthreads problem. Far better to do it in user space.

    Oh, certainly. We need COW for completely unrelated reasons - suppose
    you open() a file and then change your *ID. You definitely want credentials
    on the opened file to stay unchanged.

    Pthreads are non-issue as far as I'm concerned. I'ld rather avoid mixing
    them with credentials' cache. BTW, what about *BSD implementations? Do
    they change creds of all threads upon set*id(2)?

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