Re: upgrade howto

[antoine <antoine@nagafix.co.uk>]

On Wed, 2005-06-22 at 07:54 -0400, Stephen Smalley wrote:
> On Wed, 2005-06-22 at 00:06 +0100, antoine wrote:
> > What is the safest way of upgrading libselinux and libsepol?
> > 
> > I attempted it a couple of weeks ago and had to resort to statically
> > linked copies of ls and tar to restore the previous version after the
> > upgrade broke my system. Clearly, I did something wrong. What is scary
> > is that a lot of the core system utilities are linked against libselinux
> > (ls, init, portage, etc) and that when I upgrade, it would seem that I
> > need to rebuild them (as just upgrading the library left them unusable)
> > - which is impossible without these basic tools... catch 22?
> 
> Note btw that while upgrading should always work, downgrading is another
> matter.  So if Gentoo was using a newer base version of libsepol and
> libselinux (e.g. one from the sourceforge CVS tree), and you downgraded
> to an older one (e.g. the last nsa.gov release, which was in March),
> that could easily break your system as your userland may be depending on
> newer interfaces.  nsa.gov releases are only made periodically,
> typically when there is a new Linux kernel release (e.g. one should be
> occurring soon for 2.6.12), whereas the sourceforge CVS tree tracks
> development much more closely, and some distributions (like Fedora)
> track the sourceforge CVS tree directly.

I was upgrading from CVS and clearly I must have done something wrong.
I've just upgraded by creating new Gentoo ebuild files for the just
released versions and it all worked fine.

Antoine


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