[OE-core] Regression bug: dbus messagebus user generation is wrong

[Martin Jansa]

On Thu, Dec 22, 2011 at 09:49:01AM +0100, Bernhard Guillon wrote:
> Hi all,
> we switched the way we chown /usr/libexec/dbus-daemon-launch-helper
> with this commit:
> 
> commit 46e6c3fa8034b12d178d605f3f5d7efe69671a13
> Author: Otavio Salvador <otavio at ossystems.com.br>
> Date:   Fri Oct 21 02:49:51 2011 +0000
> 
>      dbus: use useradd class to allow use in read-only filesystems
> 
>      Move creation of required user/groups to useradd class thus allowing
>      use with read-only filesystems and booting the initial boot.
> 
>      Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
> 
> 
> We changed the owner ship of the user on the device before this commit. 
> Now we change the owner ship on build time which is wrong. If we change 
> the owner ship on buildtime we cannot know the gid of the messagebus 
> group. On my system it is e.g 117 but on my targtet it is 997. There is no 
> standard mapping for gid to names so we need to switch back to change the 
> group on the device.

See http://bugzilla.pokylinux.org/show_bug.cgi?id=1711
but it's still broken in some cases (on my buildhost 3 from 5 machines
are broken, 2 are working after last opkg changes).

Good test is to enable testlab and run this in your deploy/images directory
find . ! -type l -name \*tar.gz`; do 
  echo $i; 
  tar -tvf $i | grep dbus-daemon-launch; 
  tar --numeric-owner -tvf $i | grep dbus-daemon-launch; 
  tar xzvpf $i ./etc/group; 
  grep messagebus ./etc/group; 
done | tee -a image.test

And working image needs to have not only messagebus as owner but also
matching GID in 2nd line and last line from packaged /etc/group. With
latest opkg fixes it seems to work, but only if there is messagebus in
packaged /etc/group at all, reported here:
http://lists.linuxtogo.org/pipermail/openembedded-core/2011-December/014619.html
but probably got lost in other issues with new opkg, like this one
http://lists.linuxtogo.org/pipermail/openembedded-core/2011-December/014654.html
(if D is not needed to be set from opkg then why was offlineroot_varname.patch
added in first place? and I have updated this after
offlineroot_varname.patch removal and new version is in shr branch)
 
> I can send a patch which reenables the postinstall owner ship change if 
> you like.

Such patch is already on ML from me, now I'm using .bbappend from my
layer 
http://git.shr-project.org/git/?p=meta-smartphone.git;a=commit;h=c08dfd5f5559902f6966648f75d6c6bfd2597a5b

Cheers,
-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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