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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B122C74A4B for ; Thu, 9 Mar 2023 07:55:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229815AbjCIHzs (ORCPT ); Thu, 9 Mar 2023 02:55:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230207AbjCIHyi (ORCPT ); Thu, 9 Mar 2023 02:54:38 -0500 Received: from frasgout11.his.huawei.com (frasgout11.his.huawei.com [14.137.139.23]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 512311CBCD; Wed, 8 Mar 2023 23:54:30 -0800 (PST) Received: from mail02.huawei.com (unknown [172.18.147.228]) by frasgout11.his.huawei.com (SkyGuard) with ESMTP id 4PXLnx0YDyz9xHvy; Thu, 9 Mar 2023 15:45:41 +0800 (CST) Received: from roberto-ThinkStation-P620 (unknown [10.204.63.22]) by APP2 (Coremail) with SMTP id GxC2BwB3Rl2OkAlkp2OBAQ--.23244S2; Thu, 09 Mar 2023 08:54:01 +0100 (CET) Message-ID: <250fe1947dd3fea27d8f4aa86fdb9980954b5425.camel@huaweicloud.com> Subject: Re: [PATCH v7 0/6] evm: Do HMAC of multiple per LSM xattrs for new inodes From: Roberto Sassu To: Paul Moore Cc: mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, zohar@linux.ibm.com, dmitry.kasatkin@gmail.com, jmorris@namei.org, serge@hallyn.com, stephen.smalley.work@gmail.com, eparis@parisplace.org, casey@schaufler-ca.com, ocfs2-devel@oss.oracle.com, reiserfs-devel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-kernel@vger.kernel.org, keescook@chromium.org, nicolas.bouchinet@clip-os.org, Roberto Sassu Date: Thu, 09 Mar 2023 08:53:48 +0100 In-Reply-To: References: <20221201104125.919483-1-roberto.sassu@huaweicloud.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.5-0ubuntu1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: GxC2BwB3Rl2OkAlkp2OBAQ--.23244S2 X-Coremail-Antispam: 1UD129KBjvdXoWrZw4kGFy8uryfCFWDJw47Jwb_yoWkZFg_u3 WUt3s7Gws8X3WkGa13tr1agry0g3ykZF1jvryqgr13Xw18JaykAFs7CFsavw15Jay7X3sI kr9rZ342y3sIgjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb78YFVCjjxCrM7AC8VAFwI0_Xr0_Wr1l1xkIjI8I6I8E6xAIw20E Y4v20xvaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwV A0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWUJVWUCwA2z4x0Y4vE2Ix0cI8IcVCY1x02 67AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIE14v26r1j6r4UM28EF7xvwVC2z280aVCY1x0267 AKxVW8JVW8Jr1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2 j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7x kEbVWUJVW8JwACjcxG0xvEwIxGrwACI402YVCY1x02628vn2kIc2xKxwCF04k20xvY0x0E wIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E74 80Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0 I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04 k26cxKx2IYs7xG6rW3Jr0E3s1lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY 1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IU13rcDUUUUU== X-CM-SenderInfo: purev21wro2thvvxqx5xdzvxpfor3voofrz/1tbiAQALBF1jj4pbjgACsi X-CFilter-Loop: Reflected Precedence: bulk List-ID: On Wed, 2023-03-08 at 17:16 -0500, Paul Moore wrote: > On Thu, Dec 1, 2022 at 5:42 AM Roberto Sassu > wrote: > > From: Roberto Sassu > > > > One of the major goals of LSM stacking is to run multiple LSMs side by side > > without interfering with each other. The ultimate decision will depend on > > individual LSM decision. > > > > Several changes need to be made to the LSM infrastructure to be able to > > support that. This patch set tackles one of them: gives to each LSM the > > ability to specify one or multiple xattrs to be set at inode creation > > time and, at the same time, gives to EVM the ability to access all those > > xattrs and calculate the HMAC on them. > > Hi Roberto, > > The v7 draft of this patchset had some good discussion, and based on a > quick read of the comments it looks like everyone was eventually > satisfied that the v7 draft was good and no further changes were > necessary, is that correct or do you have an updated draft of this > patchset? Hi Paul I addressed few more concerns from Mimi and Casey. I think v8 should be good to send (unless you have more comments/suggestions). Thanks Roberto