Date: Thu, 20 Jan 2005 22:47:15 -0800 From: Andrew Konstantinov <andrei@kableu.com> To: freebsd-stable@freebsd.org Subject: Re: secure level 2 unable to modify pf rules Message-ID: <20050121064715.GA82604@warrior.kableu.com> In-Reply-To: <20050121033201.GA81807@warrior.kableu.com> References: <20050121033201.GA81807@warrior.kableu.com>
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On Thu, Jan 20, 2005 at 07:32:01PM -0800, Andrew Konstantinov wrote:
> Hello,
>=20
> The manual page for securelevel says that secure level 3 provides the same
> functionality as secure level 2 plus the protection of pf/ipf/ipfw against
> modification. Since pf/ipf/ipfw protection is an addition, I assume that =
it
> should not be present with secure level 2. For some reason that's not the
> reality.
>=20
> gater# id
> uid=3D0(root) gid=3D0(wheel) groups=3D0(wheel), 5(operator)
> gater# uname -rs
> FreeBSD 5.3-RELEASE-p5
> gater# sysctl kern.securelevel
> kern.securelevel: 2
> gater# pfctl -F all
> pfctl: pfctl_clear_rules: Operation not permitted
> gater#
>=20
> Is there a bug in the documentation or in the implementation of secure le=
vel?
> Or perhaps, did I misinterpret something?
Replying to myself. This should fix the bug if it's really a bug and not a
feature.
--- sys/contrib/pf/net/pf_ioctl.c.orig Thu Jan 20 22:40:35 2005
+++ sys/contrib/pf/net/pf_ioctl.c Thu Jan 20 22:41:24 2005
@@ -1058,9 +1058,9 @@
/* XXX keep in sync with switch() below */
#ifdef __FreeBSD__
- if (securelevel_gt(td->td_ucred, 1))
+ if (securelevel_gt(td->td_ucred, 2))
#else
- if (securelevel > 1)
+ if (securelevel > 2)
#endif
switch (cmd) {
case DIOCGETRULES:
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