linux-kernel - Re: [NFS] [PATCH 2/7] NFS: if ATTR_KILL_S*ID bits are set, then skip mode change

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Date:	Sat, 15 Sep 2007 01:43:45 +1000
From:	Greg Banks <gnb@....com>
To:	Jeff Layton <jlayton@...hat.com>
Cc:	reiserfs-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
	ecryptfs-devel@...ts.sourceforge.net, nfs@...ts.sourceforge.net,
	linux-fsdevel@...r.kernel.org, unionfs@...esystems.org,
	linux-cifs-client@...ts.samba.org
Subject: Re: [NFS] [PATCH 2/7] NFS: if ATTR_KILL_S*ID bits are set, then skip mode change

On Fri, Sep 14, 2007 at 10:58:38AM -0400, Jeff Layton wrote:
> On Sat, 15 Sep 2007 00:40:33 +1000
> Greg Banks <gnb@....com> wrote:
> 
> 
> > Ok, you convinced me.
> 
> Right. When I was first looking at this, I considered some similar
> approaches, but hit roadblocks with all of them. The only real option
> seems to be to leave this to the server, but that does assume that the
> server handles this properly.
> 
> Servers that don't are broken, IMO.

According to what spec?  A quick trip around the machine room shows
that neither Solaris 10 nor Darwin 7.9.0 clobber setuid on write
either.

> If Irix isn't clearing these bits
> on a write then it might be good to see if they can fix that...

I think first you'd have to mount a serious argument that it's broken,
more serious than "it works differently from Linux".

Greg.
-- 
Greg Banks, R&D Software Engineer, SGI Australian Software Group.
Apparently, I'm Bedevere.  Which MPHG character are you?
I don't speak for SGI.
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