Date: Wed, 11 Dec 2002 21:05:11 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Kris Kennaway <kris@obsecurity.org> Cc: Andrew Thompson <andy@fud.org.nz>, freebsd-current@FreeBSD.ORG Subject: Re: Jailing a 4.7 environment on 5.0? Message-ID: <20021212050511.GA78336@troutmask.apl.washington.edu> In-Reply-To: <20021212040713.GA91883@rot13.obsecurity.org> References: <20021212001931.GA76871@troutmask.apl.washington.edu> <20021212005216.GA87536@rot13.obsecurity.org> <02Dec12.135649nzdt.119048@homer.fire.org.nz> <20021212010846.GA77330@troutmask.apl.washington.edu> <20021212011712.GA87978@rot13.obsecurity.org> <20021212033405.GA77952@troutmask.apl.washington.edu> <20021212040713.GA91883@rot13.obsecurity.org>
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On Wed, Dec 11, 2002 at 08:07:14PM -0800, Kris Kennaway wrote:
> On Wed, Dec 11, 2002 at 07:34:05PM -0800, Steve Kargl wrote:
>
> > > Replace the 'cd %D/dev; sh MAKEDEV jail' with 'mount -t devfs / $D/dev'
> > >
> >
> > Thanks for the pointer. The entire example doesn't
> > apply because my /usr/src is FreeBSD 5.0. I have
> > 4.7-disc2.iso and used a md device to copy the files
> > into a jail. It appears to work, but I have a few more
> > things to set up. I'll report with a full description
> > of what I'm doing later.
>
> Um, that's not what I said at all. Just use devfs and be done with
> it. Your way isn't likely to work now (different device numbers
> between 5.0 and 4.x) or in the future (future changes to how devices
> work).
>
You misunderstood. Here's the example again from jail(8).
D=/here/is/the/jail
cd /usr/src
mkdir -p $D
make world DESTDIR=$D
cd etc
make distribution DESTDIR=$D
cd $D/dev
sh MAKEDEV jail
cd $D
ln -sf dev/null kernel
My /usr/src is FreeBSD 5.0. I need a 4.7 environment.
I cannot do steps 2 and 4-8. I did
mkdir /usr/jail
mdconfig -a -t vnode -f 4.7-disc2.iso -u 0
mount /dev/md0 /mnt
cp -pR /mnt/bin /usr/jail
cp -pR /mnt/sbin /usr/jail
cp -pR /mnt/usr /usr/jail
cp -pR /mnt/etc /usr/jail
cp -pR /mnt/var /usr/jail
mkdir /usr/jail/dev
mount -t devfs / /usr/jail/dev
cd /usr/jail
ln -sf dev/null kernel
I'm now ready to configure the jail for my proposes.
What I could not determine from jail(8) was how to
set up /usr/jail/dev. You gave me the pointer to
setting up devfs.
For my application, I need jail/dev/{null,stdin,stdout,
stderr}, gcc 2.9.4, whatever version of binutils is
used on 4.7, and /usr/lib/lib{c,m}.so.X and libgcc.a
--
Steve
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