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    SubjectRe: security: introduce file caps
    On Thu, 23 Nov 2006 00:14:58 -0800
    Andrew Morton <akpm@osdl.org> wrote:

    > On Mon, 13 Nov 2006 21:06:55 -0600
    > "Serge E. Hallyn" <serue@us.ibm.com> wrote:
    >
    > > Implement file posix capabilities. This allows programs to be given
    > > a subset of root's powers regardless of who runs them, without
    > > having to use setuid and giving the binary all of root's powers.
    >
    > With this patch applied, my X server fails to exit when I do the normal
    > logout thing from the KDE menus.

    After a manual kill of the X server I see on the VT:

    xinit: Operation not permitted (errno 1): Can't kill X server

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