[SSSD] [PATCH] sss_client: Return a different error when sssd is not running

Simo Sorce simo at redhat.com
Thu Nov 13 15:08:30 UTC 2014


On Thu, 13 Nov 2014 10:44:45 +0100
Jakub Hrozek <jhrozek at redhat.com> wrote:

> On Wed, Nov 12, 2014 at 08:04:46PM -0500, Simo Sorce wrote:
> > On Wed, 12 Nov 2014 16:36:00 +0100
> > Lukas Slebodnik <lslebodn at redhat.com> wrote:
> > 
> > > On (12/11/14 10:00), Simo Sorce wrote:
> > > >I would create a helper function to be called on return that
> > > >transforms the error accordingly. This will allow to write the
> > > >code _and_ the comment once.
> > > >
> > > In this case, Stephan's patch is better
> > > https://bugzilla.redhat.com/attachment.cgi?id=788567
> > 
> > Yes, this is a valid alternative.
> > 
> > > >The comment should be changed to something like this in either
> > > >case: /* When sssd is stopped return a safe error code as if sss
> > > >was not configured at all in nsswitch. This prevents bogus
> > > >errors from causing issues in applications, before sssd starts
> > > >or if it fails to respond. */
> > > >
> > > >No need to mention that sss is by default in nsswitch, as it is
> > > >not in all distributions and it really is inconsequential, the
> > > >same behaviour change hleps when sss is not the default but is
> > > >has been manually added and sssd is stopped or not started yet
> > > >(for example during boot).
> > > nss-pam-ldapd has the same behaviour in the same situation.
> > > Will we patch it as well? It's very likely we won't.
> > 
> > Sorry, I do not see how that matters :)
> > 
> > > The biggest problem is that sss is by default in nsswitch on
> > > fedora/rhel>=7 due to glibc caching and problem with GNOME,
> > > a) sssd-client is installed by default on this platforms.
> > > b) sssd need't be configured by default and in most cases won't be
> > >     => sssd cannot run
> > > c) glibc developers don't want to adjust the error return code in
> > > glibc
> > > 
> > > As a result of this, we need to patch sssd.
> > > I would say we should patch sssd just in downstream and
> > > Stephan's patch works well. I tested it.
> > 
> > Ok, then let's go with Stephen's patch.
> > 
> > Simo.
> > 
> 
> I don't personally mind whether we use Lukas' or Stephen's patch but I
> would /strongly/ prefer the patch to be pushed upstream.
> 
> Non-upstream patches should be considered valid only as a temporary
> workarounds..

I was not aware the patch was not proposed for upstream. I strongly
disagree on this kind of patches being platform specific too.

Simo.

-- 
Simo Sorce * Red Hat, Inc * New York



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