linux-kernel - Re: [PATCH] Tools: hv: Fix for long file names from readdir

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Message-ID: <999858348.7901147.1352386363812.JavaMail.root@redhat.com>
Date:	Thu, 8 Nov 2012 09:52:43 -0500 (EST)
From:	Tomas Hozza <thozza@...hat.com>
To:	Olaf Hering <olaf@...fle.de>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, apw@...onical.com,
	jasowang@...hat.com, kys@...rosoft.com
Subject: Re: [PATCH] Tools: hv: Fix for long file names from readdir

> > -        char dev_id[256];
> > +        char dev_id[512];
> 
> Shouldnt that be PATH_MAX or similar?

dirent->d_name should be PATH_MAX, but it is mostly 
not guaranteed. And then the dev_id is concatenated
with two strings so it can exceed 256 bytes.

After discussion with K. Y. Srinivasan I just doubled
the size and added size checks for sanity.

Tomas
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