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Message-ID: <20100111014530.GB4070@heat>
Date: Sun, 10 Jan 2010 20:45:30 -0500
From: Michael Stone <michael@...top.org>
To: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc: 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>,
Valdis Kletnieks <Valdis.Kletnieks@...edu>,
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>,
Américo 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>, Pavel Machek <pavel@....cz>,
Al Viro <viro@...IV.linux.org.uk>,
Kyle Moffett <kyle@...fetthome.net>,
Michael Stone <michael@...top.org>
Subject: Re: [PATCH 2/3] Security: Implement disablenetwork semantics. (v4)
Tetsuo Handa wrote:
>Michael Stone wrote:
>> Examples of software that I want to be able to gain privileges normally include:
>>
>> rainbow, which requires privilege in order to add new accounts to the system
>> and in order to call setuid() but which does not require networking
>> privileges.
>
> If the system is not using local files (i.e. /etc/passwd and /etc/shadow),
> the process who wants to add new accounts to the system might need network
> access (e.g. to LDAP server), doesn't it?
General purpose account manipulation tools might need network access but
rainbow handles all its account manipulations via state stored in
/var/spool/rainbow/2. This state is made available to the rest of the system
via libnss_rainbow.
Michael
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