linux-kernel - Re: [PATCH 0/3] exporting capability name/code pairs (for 2.6.26)

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Message-ID: <482BEA9A.3010006@ak.jp.nec.com>
Date:	Thu, 15 May 2008 16:47:38 +0900
From:	KaiGai Kohei <kaigai@...jp.nec.com>
To:	Andrew Morgan <morgan@...nel.org>
CC:	Chris Wright <chrisw@...s-sol.org>, greg@...ah.com,
	serue@...ibm.com, linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] exporting capability name/code pairs (for 2.6.26)

Andrew Morgan wrote:
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> KaiGai Kohei wrote:
> | For example, we got CAP_MAC_ADMIN at 2.6.25. If an application tries to
> | use it, we have to replace libcap for 2.6.24 by libcap for 2.6.25.
> | Although, we don't get any updates in libcap. :-(
> 
> I'm not sure what you mean here. I think you will find that this
> particular capability was supported in libcap 2.03. Current is 2.09.

What I wanted to say is that we have to update/rebuild/reinstall
userland packages using arbitary number of capabilities (like libcap)
whenever the newer kernel adds a new capability, however, is it really
necessary?

Thanks,

> Also, having Ack'd your proposed kernel patch, I speculatively included
> support for it in libcap-2.08. I will, of course, remove this support if
> the kernel doesn't adopt your change - or picks a different strategy...
> As it is, the patched kernel works nicely. :-)
> 
> http://www.kernel.org/pub/linux/libs/security/linux-privs/libcap2/
> 
> Cheers
> 
> Andrew
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-- 
OSS Platform Development Division, NEC
KaiGai Kohei <kaigai@...jp.nec.com>
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