linux-kernel - Re: [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing [try #13]

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Date:	Tue, 05 Sep 2006 14:06:52 +0800
From:	Ian Kent <raven@...maw.net>
To:	Trond Myklebust <trond.myklebust@....uio.no>
Cc:	David Howells <dhowells@...hat.com>, Andrew Morton <akpm@...l.org>,
	torvalds@...l.org, steved@...hat.com,
	linux-fsdevel@...r.kernel.org, linux-cachefs@...hat.com,
	nfsv4@...ux-nfs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/7] Permit filesystem local caching and NFS superblock
	sharing [try #13]

On Tue, 2006-09-05 at 00:53 -0400, Trond Myklebust wrote:
> On Tue, 2006-09-05 at 12:03 +0800, Ian Kent wrote:
> > Sure but this is an old version of autofs which is in use so changing
> > the expected behavior of a system call is not acceptable and I expect
> > other applications may well have a problem with this also.
> 
> Applications that rely on mkdir() to never return EACCES are broken.
> Particularly so in an selinux system (as was the case here).

That's not quite right.

autofs v4 doesn't rely on mkdir never returning EACCESS just that it
return EEXIST if the directory exists. Never the less if the behavior of
stat will work in this case I'll change v4 to do it the way you suggest
(as v5 does already). 



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