linux-kernel - Re: File capabilities are not 'working' and I have no idea why

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Message-ID: <52F13D11.8090009@gmail.com>
Date:	Tue, 04 Feb 2014 19:18:41 +0000
From:	Aaron Jones <aaronmdjones@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: File capabilities are not 'working' and I have no idea why

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I have isolated the problem. File capabilities are not assigned when
the program being executed is located on a filesystem mounted with
the "nosuid" option.

This seems counter-intuitive; a fully capability-based system would
not use setuid binaries... so a logical thing to do would be to
prevent the setuid bits from doing anything, which is what the
nosuid flag is for, no?

Or am I missing something?

Can we get a config flag to toggle this behaviour?



Aaron Jones.

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