[SSSD] [PATCH] NSS: invalidate memcache user entry on initgr, too

Simo Sorce simo at redhat.com
Wed Jan 16 15:54:43 UTC 2013


On Tue, 2013-01-15 at 15:23 +0100, Jakub Hrozek wrote:
> On Tue, Jan 15, 2013 at 08:27:32AM -0500, Simo Sorce wrote:
> > On Tue, 2013-01-15 at 09:02 +0100, Jakub Hrozek wrote:
> > > https://fedorahosted.org/sssd/ticket/1757
> > > 
> > > When the user entry was missing completely after initgroups, we would
> > > never invalidate the user entry from cache. This led to dangling cache
> > > entried in memory cache if the user was removed from the server while
> > > still being in memory cache.
> > 
> > 0001: Why are we unconditionally deleting the user from the memory cache
> > even if just groups changed ?
> > 
> 
> I was trying to keep the flow as simple as possible because I think that
> user deletes or even group modifications updates on the server are so rare
> that if we loose the memcache, it's not a big deal.
> 
> But I moved the user update separately in this version.
> 
> > 0002: Please add a comment in be_initgroups_prereq() that the first id
> > it he user's primary gid and 'might' be duplicated later ?
> 
> Done
> 
> > Also why do we skip verifying the primary gid ?
> > 
> 
> Ah, not sure, I think I was just copying the previous flow that skipped
> the primary gid too. The attached version checks them all.
> 
> Thank you for the review.

Looks good to me, ACK!

Simo.

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




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