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    SubjectRe: [PATCH -mm 5/7] add user namespace
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    On Thu, 2006-07-13 at 21:45 -0600, Eric W. Biederman wrote:
    > I think for filesystems like /proc and /sys that there will normally
    > be problems. However many of those problems can be rationalized away
    > as a reasonable optimization, or are not immediately apparent.

    Could you talk about some of these problems?

    > Passing a file descriptor between process in a unix domain socket is
    > a case where I can easily construct scenarios where there are
    > indisputable problems. It is one of my standard thought experiments
    > to see if a namespace is sound.

    Care to share some of those indisputable problems?

    -- Dave

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