linux-kernel - Re: [RFC 5/8] kdbus: use LSM hooks in kdbus code

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Date:	Wed, 08 Jul 2015 14:12:03 +0200 (CEST)
From:	Paul Osmialowski <p.osmialowsk@...sung.com>
To:	Lukasz Pawelczyk <l.pawelczyk@...sung.com>
Cc:	Paul Moore <pmoore@...hat.com>,
	James Morris <james.l.morris@...cle.com>,
	Casey Schaufler <casey@...aufler-ca.com>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	Kees Cook <keescook@...omium.org>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Stephen Smalley <sds@...ho.nsa.gov>,
	Neil Brown <neilb@...e.de>,
	Mark Rustad <mark.d.rustad@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Daniel Mack <daniel@...que.org>,
	David Herrmann <dh.herrmann@...glemail.com>,
	Djalal Harouni <tixxdz@...ndz.org>,
	Shuah Khan <shuahkh@....samsung.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	Karol Lewandowski <k.lewandowsk@...sung.com>,
	Lukasz Skalski <l.skalski@...sung.com>
Subject: Re: [RFC 5/8] kdbus: use LSM hooks in kdbus code

You're right about it. To be fixed. Thanks for spotting this.

On Wed, 8 Jul 2015, Lukasz Pawelczyk wrote:

>> +		ret = -EPERM;
>> +		goto exit_unref;
>> +	}
>
> Also, why aren't the error codes passed from LSM? LSM can return
> anything, from EINVAL, to ENOMEM. Returning EPERM can be misleading.
>
View attachment "0005-kdbus-use-LSM-hooks-in-kdbus-code.patch" of type "TEXT/x-diff" (13167 bytes)