On Fri, Dec 07, 2018 at 11:34:50AM -0800, John Baldwin wrote:
> On 12/7/18 10:59 AM, Conrad Meyer wrote:
> > On Fri, Dec 7, 2018 at 10:05 AM John Baldwin <j...@freebsd.org> wrote:
> >> The
> >> requirement for root mostly mitigates this when root vs not-root is your
> >> only privilege.  However, a capsicum vs non-capsicum process is a more
> >> recent privilege that is orthogonal to root vs non-root.  It might be that
> >> allowing a capsicumized root to create links to files that were 
> >> intentionally
> >> unlinked by a non-capsicumized root would be the same problem.
> > 
> > None of these syscalls were added to sys/kern/capabilities.conf, so I
> > think a capsicum-contained root cannot use them anyway.  Maybe I
> > misunderstand how capabilities.conf works, though.
> 
> Ok.

FWIW fhopenat(2) was added to capabilities.conf in the original submission.
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