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Message-ID: <2c0942db0807290935s67eba63te5bb826a0ab7c752@mail.gmail.com>
Date: Tue, 29 Jul 2008 09:35:32 -0700
From: "Ray Lee" <ray-lk@madrabbit.org>
To: "Jeremy Fitzhardinge" <jeremy@goop.org>
Subject: Re: directory sort order no longer beginning with "." and ".."?
Cc: Oliver.Soltys@rsel.renesas.com, linux-kernel@vger.kernel.org
In-Reply-To: <488F2EDA.2090709@goop.org>
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On Tue, Jul 29, 2008 at 7:53 AM, Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> Oliver Soltys wrote:
>>
>> My question: is this a bug, or a feature? I could not find anything about
>> that
>> anywhere...
>>
>> Does anybody have an idea, how I can fix this? Unfortunately, our
>> application
>> can not be changed.
>
> No Unix-like system makes any guarantee about the order of '.' and '..' with
> respect to other directory entries.  They've often appeared first as an
> implementation side-effect, but that's highly system and filesystem
> dependent.
>
> If you can't modify the app, you might consider some LD_PRELOAD library to
> replace readdir with something that sorts the results in the order your app
> expects.  There's already examples of that kind of thing to sort the results
> by inode.

That's a good idea, though based on his description it's even easier.
The LD_PRELOAD just needs to artificially introduce . and .., at the
beginning and toss them out once it hits them in the list. No sorting
required.
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