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    SubjectRe: [RFC][PATCH-2.4] Prevent mounting on ".."
    On Sun, 2003-06-29 at 15:09, Willy TARREAU wrote:
    > Hi Al and Marcelo,
    > while I was trying to get maximum restrictions on a chroot on 2.4.21-pre,
    > I found that it's always possible to mount a ramfs or a tmpfs on "..",
    > and then upload whatever I wanted in it. It's a shame because I was
    > trying to isolate network daemons inside empty, read-only file-systems,
    > and I discovered that this effort was worthless. To resume, imagine a
    > network daemon which does :

    you need to be root to mount. If you're root you can break out of a
    chroot anyway....
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