RCng/NTP Catch-22

Brooks Davis brooks at one-eyed-alien.net
Thu Oct 21 08:25:05 PDT 2004


On Thu, Oct 21, 2004 at 06:05:13PM +0300, Mike Makonnen wrote:
> On Wed, Oct 20, 2004 at 03:03:29PM -0700, Kevin Oberman wrote:
> > I have run into a messy issue with ntp on a V5 or current system. I have
> > kludged around it, but the problem really needs to be fixed.
> > 
> > ntpd uses symlinked devices to talk to the reference clock (if there is
> > one).
> > lrwxr-xr-x  1 root  wheel  10 Jul  1 14:36 /dev/pps1 -> /dev/cuaa1
> > lrwxr-xr-x  1 root  wheel  10 Jul  1 14:36 /dev/true1 -> /dev/cuaa1
> > 
> > While I really wish ntpd did not do this, it does and it's in the base
> > system. 
> > 
> > Since /etc/rc.d/ntpd contains:
> > BEFORE: LOGIN
> > and /etc/rc.d/devfs contains:
> > REQUIRE: LOGIN
> > I don't see a clean way to create the symlinks at boot time. If the
> > devices are not present when ntp starts, it never looks again.
> 
> I don't see why devfs requires LOGIN. It only requires that rcconf and
> the /usr filesystem be available. Also, since it appears that it
> may be needed by some daemons it should be set to run before any servers
> are started. I think the attached (untested) patch should work.
> 
> Cheers.
> -- 
> Mike Makonnen  | GPG-KEY: http://www.identd.net/~mtm/mtm.asc
> mtm at identd.net | Fingerprint: AC7B 5672 2D11 F4D0 EBF8  5279 5359 2B82 7CD4 1F55
> mtm at FreeBSD.Org| FreeBSD - Unleash the Daemon !

> Index: etc/rc.d/devfs
> ===================================================================
> RCS file: /home/ncvs/src/etc/rc.d/devfs,v
> retrieving revision 1.9
> diff -u -r1.9 devfs
> --- etc/rc.d/devfs	7 Oct 2004 13:55:25 -0000	1.9
> +++ etc/rc.d/devfs	21 Oct 2004 15:03:33 -0000
> @@ -4,8 +4,8 @@
>  #
>  
>  # PROVIDE: devfs
> -# REQUIRE: LOGIN
> -# BEFORE:  securelevel
> +# REQUIRE: rcconf mountcritremote
> +# BEFORE:  SERVERS securelevel
>  # KEYWORD: nojail
>  
>  . /etc/rc.subr

I think this is better then what I posted.  I think it would be nice to
have a virtual dependency to replace "rcconf mountcritremote" since we
use it all the time and what we really mean is that /usr is mounted.

-- Brooks

-- 
Any statement of the form "X is the one, true Y" is FALSE.
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