[Bug 223327] dhclient: close the pidfile before calling chroot(2)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223327

Kristof Provost <kp at freebsd.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cem at freebsd.org,
                   |                            |kp at freebsd.org,
                   |                            |markj at FreeBSD.org,
                   |                            |oshogbo at freebsd.org

--- Comment #1 from Kristof Provost <kp at freebsd.org> ---
Hmm. This is quite interesting. I think the problem started with r322369 which
changed libutil / pidfile_open() to keep the directory fd (rather than the
pidfile fd) so it could unlink the pidfile in capability mode.
That appears to conflict with chroot now, because you can't chroot if you've
got a directory fd open to somewhere outside the new root.

I don't think this patch is right, because it'll break the pidfile_remove() in
routehandler().

I'm not at all sure how this should be fixed though.

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