linux-kernel - Re: [ linus-git ] prctl(PR_SET_KEEPCAPS, ...) is broken for some configs, e.g. CONFIG_SECURITY

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Message-ID: <20080610161240.GW30402@sequoia.sous-sol.org>
Date:	Tue, 10 Jun 2008 09:12:53 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	"Serge E. Hallyn" <serue@...ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Andrew Morgan <morgan@...nel.org>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [ linus-git ] prctl(PR_SET_KEEPCAPS, ...) is broken for some
	configs, e.g. CONFIG_SECURITY_SELINUX

* Serge E. Hallyn (serue@...ibm.com) wrote:
> If we decide to get rid of dummy long-term, then it's far less
> distasteful to have it lie and claim the keepcaps worked in the
> meantime.

We should get rid of it ASAP.

> So for 2.6.26 we could have dummy lie, then plan to make capabilities
> the default for 2.6.27?

It is already lying, so this isn't too big a stretch.  I'd expect it not
to help since either capset will fail, or it would fail when it tried
to use the cap after dropping uid.

thanks,
-chris
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