Date: Wed, 1 Jul 2009 02:02:53 +0200 (CEST)
From: Marton Balint <cus@fazekas.hu>
To: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
cc: linux-kernel@vger.kernel.org
Subject: Re: vfat creates multiple files with the same filename
In-Reply-To: <87tz1ylaq8.fsf@devron.myhome.or.jp>
Message-ID: <Pine.LNX.4.64.0907010158560.835@cinke.fazekas.hu>
References: <Pine.LNX.4.64.0906281935490.20945@cinke.fazekas.hu>
 <87tz1ylaq8.fsf@devron.myhome.or.jp>
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On Tue, 30 Jun 2009, OGAWA Hirofumi wrote:
> Marton Balint <cus@fazekas.hu> writes:
> 
> > I don't know if removing the invalid characters silently instead of 
> > returning EINVAL is a good practice, but allowing two files with identical 
> > filenames is definitely wrong. 
> 
> The utf8 function seems didn't return the error for invalid char.
> 
> > Could someone please have a look at the problem? Unfortunately I am not 
> > qualified enough to track it down...
> >
> > I've run the testcase on both 2.6.30 and 2.6.31-rc1 kernels, but this bug 
> > is probably not very new, since I remember having it also in 2.6.27.
> 
> This is quick hack though, this should return -EINVAL for invalid char
> like nls.  Can you try this?

It works for me, filenames with invalid utf-8 characters are now rejected, 
so I no longer can create multiple files with the same name. Thanks for 
the fix.

Regards,
  Marton
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