Date: Wed, 7 Jun 1995 15:31:26 -0700 (PDT) From: "Steven G. Kargl" <kargl@troutmask.apl.washington.edu> To: rgrimes@gndrsh.aac.dev.com (Rodney W. Grimes) Cc: freebsd-hackers@freefall.cdrom.com Subject: Re: chgrp in /sbin? Message-ID: <199506072231.PAA08455@troutmask.apl.washington.edu> In-Reply-To: <199506072029.NAA03212@gndrsh.aac.dev.com> from "Rodney W. Grimes" at Jun 7, 95 01:29:52 pm
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According to Rodney W. Grimes:
>
> >
> > Guys,
> >
> > I just had a nice surprise. I built a custom kernel and rebooted
> > to find that /dev/sd0s2[a-h] and /dev/sd1s1[a-h] were missing. (How
> > these got deleted is a short story for another post maybe.) This
> > drops you into single-user mode when the mount of the various
> > partitions fail. No problem.
> >
> > #cd /dev
> > #PATH=/bin:/sbin:/stand
> > #EXPORT PATH
> > #sh MAKEDEV sd0s2a
> > chgrp not found
> >
> > Question: shouldn't chgrp reside with chown and chmod in /stand or /sbin
> > or /bin?
> >
> > Yes, chgrp is in /usr/bin, but if you can't mount /usr then it is obviously
> > useless.
>
> This is part of a long standing evaluation of what belongs in the root
> partition and what belongs in usr. You could always mknod the thing
> by hand, fix up your stuff, mount /usr and then run MAKEDEV to fix this,
> so IMHO, chgrp/chown does not belong in /.
>
Two observations:
(1) This assumes one knows the proper major and minor numbers of the
various /dev/sd0s1 devices. Reading MAKEDEV does not provide much
(immediate) insight (particularly for the minor number). The major
number can be found in /usr/src/sys/i386/conf/devices.i386.
Unfortunately, this is an umountable partition. So,
#cd /dev
#mknod sd0s1 b major? minor? [Does one guess major and minor here?]
(2) After getting things mounted. I ran MAKEDEV to correct the chgrp
problem noted above.
%cd /dev
%sh MAKEDEV all
%ls -l sd0*
brw-r----- 1 root operator 4, 65538 Jun 7 14:52 sd0
brw-r----- 1 root operator 4, 0 Jun 7 14:52 sd0a
brw-r----- 1 root operator 4, 1 Jun 7 14:52 sd0b
brw-r----- 1 root operator 4, 2 Jun 7 14:52 sd0c
brw-r----- 1 root operator 4, 3 Jun 7 14:52 sd0d
brw-r----- 1 root operator 4, 4 Jun 7 14:52 sd0e
brw-r----- 1 root operator 4, 5 Jun 7 14:52 sd0f
brw-r----- 1 root operator 4, 6 Jun 7 14:52 sd0g
brw-r----- 1 root operator 4, 7 Jun 7 14:52 sd0h
brw-r----- 1 root operator 4, 131074 Jun 7 14:52 sd0s1
brw-r----- 1 root operator 4, 196610 Jun 7 14:52 sd0s2
brw-r----- 1 root operator 4, 262146 Jun 7 14:52 sd0s3
brw-r----- 1 root operator 4, 327682 Jun 7 14:52 sd0s4
Where are the (sub)partitions for individual slices; i.e., sd0s#[a-h]?
%sh MAKEDEV sd0s2a
%ls -l sd0*
brw-r----- 1 root operator 4, 65538 Jun 7 14:52 sd0
brw-r----- 1 root operator 4, 0 Jun 7 14:52 sd0a
brw-r----- 1 root operator 4, 1 Jun 7 14:52 sd0b
brw-r----- 1 root operator 4, 2 Jun 7 14:52 sd0c
brw-r----- 1 root operator 4, 3 Jun 7 14:52 sd0d
brw-r----- 1 root operator 4, 4 Jun 7 14:52 sd0e
brw-r----- 1 root operator 4, 5 Jun 7 14:52 sd0f
brw-r----- 1 root operator 4, 6 Jun 7 14:52 sd0g
brw-r----- 1 root operator 4, 7 Jun 7 14:52 sd0h
brw-r----- 1 root operator 4, 131074 Jun 7 14:52 sd0s1
brw-r----- 1 root operator 4, 196610 Jun 7 15:10 sd0s2
brw-r----- 1 root operator 4, 196608 Jun 7 15:10 sd0s2a
brw-r----- 1 root operator 4, 196609 Jun 7 15:10 sd0s2b
brw-r----- 1 root operator 4, 196610 Jun 7 15:10 sd0s2c
brw-r----- 1 root operator 4, 196611 Jun 7 15:10 sd0s2d
brw-r----- 1 root operator 4, 196612 Jun 7 15:10 sd0s2e
brw-r----- 1 root operator 4, 196613 Jun 7 15:10 sd0s2f
brw-r----- 1 root operator 4, 196614 Jun 7 15:10 sd0s2g
brw-r----- 1 root operator 4, 196615 Jun 7 15:10 sd0s2h
brw-r----- 1 root operator 4, 262146 Jun 7 14:52 sd0s3
brw-r----- 1 root operator 4, 327682 Jun 7 14:52 sd0s4
--
Steven G. Kargl | Phone: 206-685-4677 |
Applied Physics Lab | Fax: 206-543-6785 |
Univ. of Washington |---------------------|
1013 NE 40th St | FreeBSD 2.x-current |
Seattle, WA 98105 |---------------------|
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