fedora-atomic discussion point: /usr/lib/passwd

[Colin Walters]

On Mon, Apr 28, 2014 at 1:39 PM, Simo Sorce <simo at redhat.com> wrote:
> 
> We can do that with SSSD, which we are planning to take over all users
> (though it will leave /etc/passwd on the system for emergency repair 
> and
> backward compatibility).

Ok, though one thing that's going to be important to me at least is the 
ability to mutate the user list "offline" - the use case here is 
something like an installer where you're operating on a different 
target root.  So in addition to the DBus API, there would need to be a 
way to use a shared library API with a "const char *chroot" type 
argument (as e.g. ostree_sysroot_new() has now).

Ideally that ends up being dumb filesystem manipulation, maybe 
invalidating some database-type caches that are then regenerated on 
boot or so.  And I should be able to control whether or not fdatasync() 
occurs on written files.  A bit more on the fdatasync() topic here: 
http://marc.info/?l=selinux&m=139578267630878&w=2



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