Re: image-postproc-extension.bbclass modifying /etc/os-release

[Henning Schild <henning.schild@siemens.com>]

Hi,

i wonder if there is any command we can run for QA. One that makes sure
that all files in the rootfs are owned by a package and are not
modified. That should take /etc /var /tmp and other such locations into
account, but should clearly detect the problematic change in /usr/lib
that slipped in via that unexpected symlink.

Does anyone know such a command?

Henning

Am Fri, 15 Jan 2021 15:26:14 +0100
schrieb "[ext] Silvano Cirujano Cuesta"
<silvano.cirujano-cuesta@siemens.com>:

> Hi,
> 
> I've noticed that '/etc/os-release' is being changed on the image in
> meta/classes/image-postproc-extension.bbclass [1].  What BTW ends up
> changing '/usr/lib/os-release', since it's only a symlink. But both
> '/etc/os-release' and '/usr/lib/os-release' are owned by
> 'base-files'...
> 
> An upgrade of 'base-files' would be replacing (silently, since is not
> marked as a configuration file) '/usr/lib/os-release' with the
> version of the upstream 'base-files' package and possibly breaking
> any tools in the system relying on certain values in that file.
> 
> Is there a reason that I'm missing for doing so instead of the
> Debian-way (file diversion with dpkg-divert)? Or any hack that I've
> overseen that avoids the mentioned breakage?
> 
> Hasta la vista,
> 
>   Silvano
> 
> [1]
> https://github.com/ilbers/isar/blob/a0d6de4ac7dfb926b38cfcd44f2bc8852f2e43e3/meta/classes/image-postproc-extension.bbclass#L20
>