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    SubjectRe: [patch 2/8] allow unprivileged umount
    On Fri, 20 Apr 2007 12:25:34 +0200 Miklos Szeredi <miklos@szeredi.hu> wrote:

    > +static bool permit_umount(struct vfsmount *mnt, int flags)
    > +{
    >
    > ...
    >
    > + return mnt->mnt_uid == current->uid;
    > +}

    Yes, this seems very wrong. I'd have thought that comparing user_struct*'s
    would get us a heck of a lot closer to being able to support aliasing of
    UIDs between different namespaces.

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