netdev - Re: [PATCH v3] net: ipv4: add IPPROTO

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Date:	Fri, 13 May 2011 14:30:43 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Vasiliy Kulikov <segoon@...nwall.com>
Cc:	David Miller <davem@...emloft.net>, solar@...nwall.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	peak@...o.troja.mff.cuni.cz, kees.cook@...onical.com,
	dan.j.rosenberg@...il.com, eugene@...hat.com, nelhage@...lice.com,
	kuznet@....inr.ac.ru, pekkas@...core.fi, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net, linux-man@...r.kernel.org
Subject: Re: [PATCH v3] net: ipv4: add IPPROTO_ICMP socket kind

Vasiliy Kulikov <segoon@...nwall.com> writes:

> This patch adds IPPROTO_ICMP socket kind.  It makes it possible to send
> ICMP_ECHO messages and receive the corresponding ICMP_ECHOREPLY messages
> without any special privileges.  In other words, the patch makes it
> possible to implement setuid-less and CAP_NET_RAW-less /bin/ping.  In
> order not to increase the kernel's attack surface, the new functionality
> is disabled by default, but is enabled at bootup by supporting Linux
> distributions, optionally with restriction to a group or a group range
> (see below).

You'll need to do a manpage patch too. Otherwise noone will know how to use
it.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
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