linux-kernel - Re: [PATCH 1/1] security: introduce fs caps

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Message-Id: <20060906234029.a4b74c6f.pj@sgi.com>
Date:	Wed, 6 Sep 2006 23:40:29 -0700
From:	Paul Jackson <pj@....com>
To:	"Serge E. Hallyn" <serue@...ibm.com>
Cc:	serue@...ibm.com, linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] security: introduce fs caps

Serge wrote:
> With SECURITY_FS_CAPABILITIES=y, what changes is that it is possible for
> a binary to be marked as granting CAP_SYS_NICE to anyone running it.

Nice explanation - it almost made sense to me.  Thanks.

Sounds like this patch would slightly increase the situations
under which a user task could do a cpuset attach_task on another
user task ... if it had CAP_SYS_NICE, or some such, it could gain
this attach_task ability that it had lacked on older kernels.

Sounds good to me.

My concern would be more if an existing user configuration stopped
working when these filesystem capabilities became available to them,
due to some previously ok operation becoming illegal.

As to exactly which CAP_SYS_* it is that has this power of
allowing a cpuset attach_task, I don't think I really care.

I'm happy.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@....com> 1.925.600.0401
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