Re: [PATCH 1/1] fix: rebuild rootfs on change of USERS

["'MOESSBAUER, Felix' via isar-users" <isar-users@googlegroups.com>]

On Fri, 2025-04-11 at 11:48 +0200, Jan Kiszka wrote:
> On 11.04.25 11:44, 'Felix Moessbauer' via isar-users wrote:
> > In case a change to the Isar created users is done, this currently
> > only re-triggers the do_rootfs_postprocess task. This task changes
> > the
> > rootfs (e.g. home dirs are moved) and by that needs to operate on a
> > clean one. Otherwise old homedirs might still remain in the final
> > rootfs
> > or move operations are not possible.
> > 
> > We fix this by ensuring that the do_rootfs_install task is executed
> > whenever a change to USERS is done. By that, we enter the
> > do_rootfs_postinstall with a clean rootfs.
> > 
> > Reported-by: Clara Kowalsky <clara.kowalsky@siemens.com>
> > Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
> > ---
> >  meta/classes/image-account-extension.bbclass | 4 ++++
> >  1 file changed, 4 insertions(+)
> > 
> > diff --git a/meta/classes/image-account-extension.bbclass
> > b/meta/classes/image-account-extension.bbclass
> > index ea956cd5..8289db40 100644
> > --- a/meta/classes/image-account-extension.bbclass
> > +++ b/meta/classes/image-account-extension.bbclass
> > @@ -144,3 +144,7 @@ python image_postprocess_accounts() {
> >      image_create_groups(d)
> >      image_create_users(d)
> >  }
> > +
> > +# rebuild rootfs on change of USERS as homes might be moved /
> > created
> > +# no need to depend on GROUPS as they don't create directories
> > +do_rootfs_install[vardeps] += "USERS"
> 
> Means, we are not caching after rootfs_install so far?

Exactly. We cache the do_rootfs_install task (which runs before
do_rootfs_postprocess). A long term solution would be to not pass the
extracted rootfs between do_rootfs_install and do_rootfs_postprocess
but instead pass the clean tarball which is then extracted in the
postprocess task.

This however would break an interface, as currently tasks that run
after do_rootfs_install assume that the rootfs is available as tree.

Felix


> 
> Jan

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