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From: Doug Rabson <dfr@rabson.org>
To: Kris Kennaway <kris@FreeBSD.org>
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Date: Wed, 28 Nov 2007 10:10:17 +0000
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org,
	John Baldwin <jhb@FreeBSD.org>
Subject: Re: cvs commit: src/etc/gss mech
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On Wed, 2007-11-28 at 11:06 +0100, Kris Kennaway wrote:
> Doug Rabson wrote:
> > On Wed, 2007-11-28 at 08:52 +0000, Doug Rabson wrote:
> >> On Tue, 2007-11-27 at 21:47 +0000, John Baldwin wrote:
> >>> jhb         2007-11-27 21:47:56 UTC
> >>>
> >>>   FreeBSD src repository
> >>>
> >>>   Modified files:
> >>>     etc/gss              mech 
> >>>   Log:
> >>>   Update the shlib version for libgssapi_krb5.  This file needs to be updated
> >>>   anytime that library version is bumped.
> >>>   
> >>>   XXX: I wonder if this breaks any 6.x binaries using Kerberos5 via GSSAPI.
> >> This file is new in 7.0.
> > 
> > By that, I mean that in 6.x, libgssapi_krb5 is called libgssapi.so.<some
> > number I forget>. In 7.0, this becomes libgssapi_krb5 and applications
> > link with the GSS-API plugin framework libgssapi.so.8 (or 9 if the extra
> > version bump has been merged to 7.0).
> > 
> > Does the number really need to be bumped for 7.0? It has already
> > happened at least once, when I committed the plugin framework.
> 
> Yes, it was the same version as in 6.x but incompatible because it 
> referenced all kinds of new libc.so.7 symbols not present in libc.so.6.
> 
> The question is whether 6.x kerberos binaries will now run on 7.0 since 
> the mech file points to an incompatible 7.0 library.

I believe they will because 6.x binaries will link directly to the
Heimdal gssapi implementation which doesn't use the mechs file (it only
does krb5).