From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1,USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35450C1B08C for ; Wed, 14 Jul 2021 20:20:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1A784613C0 for ; Wed, 14 Jul 2021 20:20:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232185AbhGNUWz (ORCPT ); Wed, 14 Jul 2021 16:22:55 -0400 Received: from linux.microsoft.com ([13.77.154.182]:44030 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234610AbhGNUWy (ORCPT ); Wed, 14 Jul 2021 16:22:54 -0400 Received: from [10.106.164.77] (unknown [131.107.8.205]) by linux.microsoft.com (Postfix) with ESMTPSA id C1E9B20B6C50; Wed, 14 Jul 2021 13:20:02 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com C1E9B20B6C50 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1626294002; bh=CI2oVvUcJHhMJovBZUzCe28YfUdYQ0mCKIALYAE50Gg=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=Iiz42R2oHhkUkarSS4dE205fLbBzvBElAzKaHupirGeJw2r8hQLDTRIbOR8uvYJhL 4saJXFw0p9jUGahlMVeSb0Q9TmkRRhClnxl81EnMXn8bpkyra3o9dSXvU8Ebj3eSLE LGC2I54TTMiGFXHBWXuYnsNTJIruwHQ73XHjHK/U= Subject: Re: [dm-devel] [PATCH 0/7] device mapper target measurements using IMA To: Thore Sommer Cc: agk@redhat.com, dm-devel@redhat.com, linux-integrity@vger.kernel.org, nramas@linux.microsoft.com, snitzer@redhat.com, zohar@linux.ibm.com References: <20210713004904.8808-1-tusharsu@linux.microsoft.com> <20210714113241.28580-1-public@thson.de> From: Tushar Sugandhi Message-ID: Date: Wed, 14 Jul 2021 13:20:02 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210714113241.28580-1-public@thson.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org Hello Thore, On 7/14/21 4:32 AM, Thore Sommer wrote: > Thank you for bringing IMA support to device mapper. The addition of dm-verity > to IMA is very useful for the project I'm working on where we boot > our distribution from removable USB media. Thank you for the positive ack. Appreciate it. > One of our goals is to detect tampering of the root file system remotely. > Therefore we enabled dm-verity support but implementing remote attestation for > dm-verity from userland is not ideal which was our initial plan. Yes, remote attestation from userland is not ideal. > This patch set enables us to leverage to already implemented IMA attestation > infrastructure by the remote attestation service that we are using (Keylime) > without trying to roll a custom solution. I am glad that DM-IMA functionality is useful for your scenario. > We tested the initial RFC patch set and will continue testing with > this one to see if it fully works in our environment and with our use > case. Thank you for testing the RFC patch set. Please let me know if you discover any bugs in this one, or have any other feedback. Thanks again. Regards, Tushar > Thore Sommer