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[209.132.180.67]) by mx.google.com with ESMTP id o12si1403422ejn.292.2019.10.30.08.22.45; Wed, 30 Oct 2019 08:23:09 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linux.microsoft.com header.s=default header.b="ZJ9rAE+/"; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726490AbfJ3PWH (ORCPT + 99 others); Wed, 30 Oct 2019 11:22:07 -0400 Received: from linux.microsoft.com ([13.77.154.182]:50360 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726175AbfJ3PWH (ORCPT ); Wed, 30 Oct 2019 11:22:07 -0400 Received: from [10.137.112.108] (unknown [131.107.174.108]) by linux.microsoft.com (Postfix) with ESMTPSA id 2F1F320B7192; Wed, 30 Oct 2019 08:22:06 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 2F1F320B7192 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1572448926; bh=aR94NnmP7TKVuROo6fBFHQ4znnOThB6fX3h7dOkbufA=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=ZJ9rAE+/d1St7e1pDxUMWGbthM4vxv2cUGOf8lV1whWRuzTEeIF2VjLIT2MaHIatI 1H1qiVfMWqnYbWg1GL2xquZ5Ym5kaKGCyg/A1YWCuqVhxYV2q+gi7/1BPMabY4+qqU SbV1uefOMu1rpItfoomXsleeU2H8a42/ZYIAhRK8= Subject: Re: [PATCH v9 5/8] ima: make process_buffer_measurement() generic To: Nayna Jain , linuxppc-dev@ozlabs.org, linux-efi@vger.kernel.org, linux-integrity@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Ard Biesheuvel , Jeremy Kerr , Matthew Garret , Mimi Zohar , Greg Kroah-Hartman , Claudio Carvalho , George Wilson , Elaine Palmer , Eric Ricther , Oliver O'Halloran , Prakhar Srivastava References: <20191024034717.70552-1-nayna@linux.ibm.com> <20191024034717.70552-6-nayna@linux.ibm.com> From: Lakshmi Ramasubramanian Message-ID: <6c94bfc0-d3ce-202b-6927-f664ee513fa9@linux.microsoft.com> Date: Wed, 30 Oct 2019 08:22:02 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191024034717.70552-6-nayna@linux.ibm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/23/19 8:47 PM, Nayna Jain wrote: Hi Nayna, > process_buffer_measurement() is limited to measuring the kexec boot > command line. This patch makes process_buffer_measurement() more > generic, allowing it to measure other types of buffer data (e.g. > blacklisted binary hashes or key hashes). Now that process_buffer_measurement() is being made generic to measure any buffer, it would be good to add a tag to indicate what type of buffer is being measured. For example, if the buffer is kexec command line the log could look like: "kexec_cmdline: " Similarly, if the buffer is blacklisted binary hash: "blacklist hash: ". If the buffer is key hash: ": key data". This would greatly help the consumer of the IMA log to know the type of data represented in each IMA log entry. thanks, -lakshmi