linux-kernel - Re: [ANNOUNCE] UidBind LSM 0.1

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Date:	Tue, 24 Apr 2007 06:51:50 -0700 (PDT)
From:	Casey Schaufler <casey@...aufler-ca.com>
To:	roberto@...it.it, linux-kernel@...r.kernel.org
Subject: Re: [ANNOUNCE] UidBind LSM 0.1


--- Roberto De Ioris <roberto@...it.it> wrote:

> Hi all,
> this is a very simple module that allows bind() to tcp/udp port (>=1024)
> only for the uids defined in a configfs tree.

Would you be so kind as to cross post to linux-security-module?
Methinks that you might get additional valuable feedback there.

> It is a first version, it only works for PF_INET sockets and makes no
> difference between tcp and udp (i am working on this)
> 
> For (little) more info see 
> 
> http://projects.unbit.it/uidbind/
> 
> Patch attached is for vanilla 2.6.20.7

It would be correct to return -EACCES rather than -EPERM in the
access denial case. EACCES indicates that an access control decision
failed, while EPERM indicates that use of a privileged operation
was attempted while not possessing appropriate privilege.



Casey Schaufler
casey@...aufler-ca.com
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