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Subject: Re: [PATCH 4/4] pmap: reduced permissions
From: Arjan van de Ven <arjan@infradead.org>
To: "Albert D. Cahalan" <acahalan@cs.uml.edu>
Cc: Al Viro <viro@ftp.linux.org.uk>, linux-kernel@vger.kernel.org,
       akpm@osdl.org
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Date: Mon, 23 Jan 2006 07:10:54 +0100
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On Sun, 2006-01-22 at 17:19 -0500, Albert D. Cahalan wrote:
> This patch changes all 3 remaining maps files to be readable
> only for the file owner. There have been privacy concerns.
> 
> Fedora Core 4 has been shipping with such permissions on
> the /proc/*/maps file already. General system monitoring
> tools seldom use these files.

changing /maps to 0400 breaks glibc; there are cases where this would
lead to /proc/self/maps to be not readable (setuid like apps) so this
needs a more elaborate fix.