[Pkg-sysvinit-devel] Bug#674178: /dev/shm is not set up right in chroot

[Steve Langasek]

On Wed, Jun 27, 2012 at 11:37:14PM +0100, Roger Leigh wrote:
> On Wed, Jun 27, 2012 at 05:03:54PM -0500, Serge Hallyn wrote:
> > Quoting Roger Leigh (rleigh at codelibre.net):
> > > On Wed, May 30, 2012 at 01:11:55PM -0500, Serge Hallyn wrote:
> > > > Here is a debdiff showing the change I was suggesting.  It works under
> > > > debootstrap.  The !ischroot case is unchanged, as is the case under
> > > > chroot where /dev is a mounpoint.
> > > 
> > > I can't see anything wrong with this after considering all the
> > > different conditions it could run in, so it's applied in git
> > > (minor whitespace changes only), and will be in the next upload.
> > 
> > Thanks - however to the bottom of the ubuntu bug (in particular
> > https://bugs.launchpad.net/launchpad/+bug/974584/comments/20
> > and
> > https://bugs.launchpad.net/launchpad/+bug/974584/comments/21
> > ) vorlon has proposed an improved variation.  Thanks and sorry
> > for the inconvenience.

> You just missed the cutoff, since I just spent the evening
> testing for upload.  I didn't want to retest everything again,
> so vorlon's improvement will have to go into the next upload.
> His outline of the various different end states is good, and
> highlights just how annoying it is having to handle upgrades
> in chroots.  Better covering them is very desirable where
> possible, though as he points out, there are certain cases
> where it's simply not possible to safely proceed.

I wouldn't put it quite like that.  I would say rather that it's not
always possible to fix up the chroot on the admin's behalf.  But we can at
least be sure not to make things worse.

> I'll review and test this for the next upload.

> BTW, vorlon's code uses "mountpoint -q /dev/".  Is the
> trailing / in /dev/ significant, e.g. to cope with /dev
> being a symlink?

It had no significance when I wrote it.  I assume this was just a typo on my
part, or I cut'n'pasted from somewhere else.

-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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