Am Tue, Feb 23, 2021 at 12:08:39AM +0100 schrieb Johannes Schauer Marin
Rodrigues:
> Hi,
>
> Quoting Tobias Frost (2021-02-22 09:04:41)
> > I was playing with mmdebstrap to see if I could bootstrap a system even
> > without dpkg,
> > suitable for some embedded device… However, I could not get
> > --mode=chrootless to work:
> >
> > I'm not sure if this is PEBKAC or a bug… If the former, I'd apprecicate
> > some hints…
> >
> > (I ran this as root in a chroot env, bootstraped for convenience reasons
> > with pbuilder;
> > but I get the same results when doing that as non-root outside of a chroot.)
> >
> > The command I run:
> >
> > mmdebstrap --mode=chrootless --aptopt='Acquire::http { Proxy
> > "http://10.243.48.3:3142";; }' --dpkgopt='path-exclude=/usr/share/man/*'
> > --dpkgopt='path-include=/usr/share/man/man[1-9]/*'
> > --dpkgopt='path-exclude=/usr/share/locale/*'
> > --dpkgopt='path-include=/usr/share/locale/locale.alias'
> > --dpkgopt='path-exclude=/usr/share/doc/*'
> > --dpkgopt='path-include=/usr/share/doc/*/copyright'
> > --dpkgopt='path-include=/usr/share/doc/*/changelog.Debian.*'
> > --dpkgopt='path-exclude=/usr/share/{doc,info,man,omf,help,gnome/help}/*'
> > --variant=essential --format=directory --architecture=armhf stable target2
> > W: running chrootless mode as root might damage the host system
> > I: skipping emulation check in chrootless mode
> > E: cannot open /etc/dpkg/dpkg.cfg.d/99mmdebstrap: No such file or directory
> > W: listening on child socket failed:
> >
> >
> > root@isildor:~/mm# ls -la /etc/dpkg/dpkg.cfg.d/99mmdebstrap
> > -rw-r--r-- 1 root root 0 Feb 22 07:56 /etc/dpkg/dpkg.cfg.d/99mmdebstrap
> >
> > root@isildor:~/mm# ls -la target2/etc/
> > total 12
> > drwxr-xr-x 3 root root 4096 Feb 22 07:56 .
> > drwxr-xr-x 5 root root 4096 Feb 22 07:56 ..
> > drwxr-xr-x 5 root root 4096 Feb 22 07:56 apt
> >
> > Possibly mmdeboostrap needs to copy this file to TARGET? Or do I need to do
> > so with hooks?
>
> I already explained in the other mail why chrootless mode is currently broken
> due to missing support for DPKG_ROOT in debconf and other essential packages.
Yeah, thanks again for the info!
> But even if support was there, what you try to do above would not work because
> currently one cannot pass any other configuration than the one in /etc/dpkg to
> dpkg. Since in chrootless mode, we never "chroot", dpkg will always use the
> system configuration and completely ignore whatever you put into your chroot
> using the --dpkgopt option.
> I talked about this with guillem in #debian-dpkg on IRC and he is aware of the
> issue but I don't think there is an open bug about this.
>
> What we could do on the mmdebstrap side, is to warn the user or error out if
> the user tries to run chrootless mode with --dpkgopt.
Yepp, mmdebootstrap should give a hint that this is not working.
(But even if dpkg would honor the targets settings, the directory would still
be needed
to be created and the file being copied…)
My 2 cents: As there are fudamental problems with chrootless, maybe this should
be documented in
the manpage as "currently non-functional beside minimal custom variants". (the
man page suggests it is a working feature… )
If you agree, I'd clone this bug and retitle one "document chrootless not yet
functional" and
one for the original reported problem about the
/etc/dpkg/dpkg.cfg.d/99mmdebstrap.
Do you want to file a bug for dpkg?
--
Cheers,
tobi
> Thanks!
>
> cheers, josch
