linux-kernel - Re: [PATCH vfat] allow retrieving entries with trailing dots

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Date:	Sat, 13 Mar 2010 22:06:25 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	Philippe De Muyter <phdm@...qel.be>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH vfat] allow retrieving entries with trailing dots

Philippe De Muyter <phdm@...qel.be> writes:

>> No, this breaks consistency. With this patch, unlink("a."), then
>> open("a.", O_CREAT) and write(), the result depend on existent
>> files. This patch is providing two files on one name.
>
> To avoid that, we could remember that we have found a filename with a trailing
> dot (in that directory or in the whole disk), and if that's the case then
> we are allowed to create filenames with trailing dots.

It sounds like dirty hack, and it would make more complex situations.
And the user can umount/mount (or reboot, etc.) before open().

Thanks.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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