Date: Wed, 30 Dec 2009 21:29:31 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: ebiederm@xmission.com (Eric W. Biederman)
Cc: "Serge E. Hallyn" <serue@us.ibm.com>,
       "Andrew G. Morgan" <morgan@kernel.org>,
       Bryan Donlan <bdonlan@gmail.com>,
       Benny Amorsen <benny+usenet@amorsen.dk>,
       Michael Stone <michael@laptop.org>, linux-kernel@vger.kernel.org,
       netdev@vger.kernel.org, linux-security-module@vger.kernel.org,
       Andi Kleen <andi@firstfloor.org>, David Lang <david@lang.hm>,
       Oliver Hartkopp <socketcan@hartkopp.net>,
       Herbert Xu <herbert@gondor.apana.org.au>,
       Valdis Kletnieks <Valdis.Kletnieks@vt.edu>,
       Evgeniy Polyakov <zbr@ioremap.net>,
       "C. Scott Ananian" <cscott@cscott.net>,
       James Morris <jmorris@namei.org>, Bernie Innocenti <bernie@codewiz.org>,
       Mark Seaborn <mrs@mythic-beasts.com>,
       Randy Dunlap <randy.dunlap@oracle.com>,
       =?UTF-8?B?QW3DqXJpY28=?= Wang <xiyou.wangcong@gmail.com>,
       Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
       Samir Bellabes <sam@synack.fr>,
       Casey Schaufler <casey@schaufler-ca.com>, Pavel Machek <pavel@ucw.cz>,
       Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: [RFC][PATCH v3] Unprivileged: Disable raising of privileges
Message-ID: <20091230212931.233003b9@lxorguk.ukuu.org.uk>
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> Added bprm->nosuid to make remove the need to add
> duplicate error prone checks.  This ensures that
> the disabling of suid executables is exactly the
> same as MNT_NOSUID.

Another fine example of why we have security hooks so that we don't get a
kernel full of other "random security idea of the day" hacks.


Alan
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