[PATCH 1/3] command: introduce abi version

[Jean-Christophe PLAGNIOL-VILLARD]

On 18:00 Mon 29 Oct     , Johannes Stezenbach wrote:
> On Mon, Oct 29, 2012 at 05:05:13PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > On 10:56 Mon 29 Oct     , Johannes Stezenbach wrote:
> > > 
> > > I wonder how this will work in practice.  If I use a simple
> > > /env/bin/init script and someone makes changes to a command
> > > which isn't used by my /env/bin/init, will it still cause
> > > my environment to be detected as incompatible?
> > > 
> > > Maybe it would be a good idea to give the user control
> > > over when to change COMMAND_ABI_VERSION by putting it into menuconfig?
> > > 
> > > Either way I guess it means the default environment's init script
> > > would need to implement automatic update to not lose important  settings.
> > here you loose nothing we just load defaulenv then you load the old one if you
> > one the code does not save the defaultenv automatlically
> 
> Well, the whole point of having an environment is that the
> user can save a customized version.  So by definition
> falling back to the default means you are going to annoy seme users
> (even though it's usually not difficult to restore the customizations).
here the issue iin the env we have 2 part the default and the config

so we should speperate them so we can update the rootfs and keep the config
ABI

Best Regards,
J.