linux-kernel - Re: RFC: disablenetwork facility. (v4)

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Message-ID: <14362.1262035681@localhost>
Date:	Mon, 28 Dec 2009 16:28:01 -0500
From:	Valdis.Kletnieks@...edu
To:	Pavel Machek <pavel@....cz>
Cc:	Michael Stone <michael@...top.org>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, linux-security-module@...r.kernel.org,
	Andi Kleen <andi@...stfloor.org>, David Lang <david@...g.hm>,
	Oliver Hartkopp <socketcan@...tkopp.net>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Bryan Donlan <bdonlan@...il.com>,
	Evgeniy Polyakov <zbr@...emap.net>,
	"C. Scott Ananian" <cscott@...ott.net>,
	James Morris <jmorris@...ei.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Bernie Innocenti <bernie@...ewiz.org>,
	Mark Seaborn <mrs@...hic-beasts.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Am?rico Wang <xiyou.wangcong@...il.com>,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	Samir Bellabes <sam@...ack.fr>,
	Casey Schaufler <casey@...aufler-ca.com>,
	"Serge E. Hallyn" <serue@...ibm.com>
Subject: Re: RFC: disablenetwork facility. (v4)

On Mon, 28 Dec 2009 21:55:11 +0100, Pavel Machek said:

> it is really only required for binaries setuid to someone else, but
> that would be too ugly. (Plus, as someone said, ping is great for
> leaking data out.)

Hmm... How is it "too ugly"?  It's just a 'euid != uid' comparison? Or
am I missing some contortion required?

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