[buildd-tools-devel] Bug#797783: Bug#797783: sbuild fails without any error message when /var/lib/sbuild is not writable in the chroot

[Johannes Schauer]

Hi,

Quoting Raphael Hertzog (2015-09-03 10:33:34)
> On Thu, 03 Sep 2015, Johannes Schauer wrote:
> > Using sbuild-shell I opened a shell in a local sid chroot and changed the owner
> > of /var/lib/sbuild/ to root and removed all read and write access for
> > everybody. But even after that I was able to build a package!
> 
> Did you change the owning group as well?

yes, I first ran sbuild-shell and then `chown -R root:root /var/lib/sbuild`

> Because I can re-trigger it as easily as this:
> $ sudo chown -R root:root /srv/chroots/sid-amd64-sbuild/var/lib/sbuild
> $ sbuild -d unstable hello_2.10-1.dsc
> 
> Note however that my unstable-amd64-sbuild chroot uses "union-type=overlay".
> It might be relevant...

and your path does not seem to be inside a tarball either.

> $ cat /etc/schroot/chroot.d/sid-amd64-sbuild 
> # File managed by Salt. Do not edit manually.
> [sid-amd64-sbuild]
> type=directory
> description=Debian sid/amd64
> directory=/srv/chroots/sid-amd64-sbuild
> aliases=unstable-amd64-sbuild,experimental-amd64-sbuild
> groups=root,sbuild
> profile=sbuild
> root-groups=root,sbuild
> source-root-groups=root,sbuild
> union-type=overlay

okay, I never used union-type=overlay or type=directory. That might explain why
I don't see the problem yet.

> > Investigating further, this seems to be because `chown -R sbuild:sbuild
> > /var/lib/sbuild` is already run in lib/Sbuild/ChrootSetup.pm (at least this
> > explains why it works for me).
> 
> Are you sure this doesn't occur after the try to create the apt.conf file?

No I'm not. I was just trying to find the reason why me running chown as above
did not trigger the problem you describe.

I will see if I can recreate your setup.

Thanks!

cheers, josch
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