linux-kernel - Re: [REGRESSION PATCH v2] NFS: let NFS_V4 and NFSD

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Date:	Wed, 01 Sep 2010 09:17:04 -0400
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Neil Brown <neilb@...e.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [REGRESSION PATCH v2] NFS: let NFS_V4 and NFSD_V4 enforce
 CRYPTO

On Wed, 2010-09-01 at 10:52 +0200, Uwe Kleine-König wrote:
> Hello,
> 
> here comes a v2 of the patch that improves the commit log with a more
> detailed analysis of the breakage introduced by df486a2
> (= v2.6.36-rc2~34^2~1 BTW) and additionally undoes the "default y" for
> RPCSEC_GSS_KRB5.
> 
> So compared to the state before df486a2 the changes are:
> 
>         NFS_V4 selects CRYPTO
>         NFSD_V4 selects CRYPTO
> 	RPCSEC_GSS_KRB5 doesn't depend on EXPERIMENTAL anymore
> 	RPCSEC_GSS_KRB5 now depends on CRYPTO instead of selecting it
> 
> Best regards
> Uwe
> 
> ----------------------------->8----------------------------
> 
> This is a follow up to
> 
> 	df486a2 (NFS: Fix the selection of security flavours in Kconfig)
> 
> Before df486a2 NFS_V4 selected RPCSEC_GSS_KRB5 but didn't enforce the
> latter's dependency EXPERIMENTAL.  df486a2 removed RPCSEC_GSS_KRB5's
> dependency on EXPERIMENTAL but additionally let it depend on CRYPTO
> (instead of select CRYPTO before).  So it was still possible to have a
> config that has NFS_V4 but not RPCSEC_GSS_KRB5.  Moreover df486a2
> changed the dependency of NFS_V4 and NFSD_V4 on RPCSEC_GSS_KRB5 from

As I said, the fix is to remove that dependency. I have a fix for the
NFS client, but the server has more insidious dependencies on RPCSEC_GSS
due to a poorly designed SECINFO implementation.

Trond
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