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Date:      Tue, 15 Jun 2010 00:03:24 +0400
From:      Ilya Bakulin <webmaster@kibab.com>
To:        John Baldwin <jhb@freebsd.org>
Cc:        Alexander Leidinger <Alexander@leidinger.net>, soc-status@freebsd.org
Subject:   Re: [Status update] sysctlreg project
Message-ID:  <20100615000324.3b089478@kibab.com>
In-Reply-To: <201006140855.53558.jhb@freebsd.org>
References:  <20100614151113.17a1c368@kibab.com> <201006140855.53558.jhb@freebsd.org>

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On Mon, 14 Jun 2010 08:55:53 -0400
John Baldwin <jhb@freebsd.org> wrote:

> > This week (14.06 -- 21.06) I will continue to add more and more FEATURE=
s. My=20
> plan is to finish adding Netgraph-related features by the end of this wee=
k.=20
> Also I plan to do some research work to understand how to handle sysctl c=
hange=20
> attempts in the kernel. This will be required to implement systcl change=
=20
> handler.
>=20
> Hmm, what are you planning to do in regards to a sysctl change handler?  =
I=20
> believe the kern.feature.* sysctls should be read-only by design.

There should be a way to change their state (to allow "spoof-off" of these =
values). In the simpliest case, invoking "sysctl kern.feature.foo=3D0" shou=
ld hide feature "foo", and it won't be listed any more, but "sysctl kern.fe=
ature.foo=3D1" should bring it back. Changing the state of these sysctls ma=
y only be allowed for root, and only if securelevel is lower than X (To Be =
Discussed).
If such scenario is possible, then it's not nessesary to bring new entities=
 in the base system, we'll use existing "sysctl" application.
--=20
Regards,
Ilya Bakulin
http://kibab.com
xmpp://kibab612@jabber.ru

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