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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 69906C43387 for ; Fri, 21 Dec 2018 20:10:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E948121928 for ; Fri, 21 Dec 2018 20:10:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="di3eqWtm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390427AbeLUUKL (ORCPT ); Fri, 21 Dec 2018 15:10:11 -0500 Received: from mail-pf1-f196.google.com ([209.85.210.196]:41504 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729035AbeLUUKK (ORCPT ); Fri, 21 Dec 2018 15:10:10 -0500 Received: by mail-pf1-f196.google.com with SMTP id b7so3062576pfi.8 for ; Fri, 21 Dec 2018 12:10:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id; bh=EQAIQUQsGcLI8rqNjfwTQN3sEVOL/4WZkv+xAEAj404=; b=di3eqWtmE28dmOERpS2sBG/HSbxaz/0CaTaVYP15xuUJP/6Es5dTB5Jxd8AzvW43Ov UQc5WHE+XLNRFgFt0hhmAbPLBUhsiUlBSiWS2WdAG5T8e3gBKCNoFlwOnjoQYwNrmvfx 3mm7hp3djO57PV8/svRtL2qfznzMC2YfZOmTQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=EQAIQUQsGcLI8rqNjfwTQN3sEVOL/4WZkv+xAEAj404=; b=EJyFJXC8G55FFqRkHLi+Cxek+EZ+Jwju2E5hrY4a8xWkDiOu+dqgRat6T/qQd+ZSH5 gaxobcLrBCKVGb/93gqOANYnpDcAGYucunM7BR7sr3luY2iLkZ4XG0XHSKiLyzcTCN0G xSeTcI1fyPyFYNIe90aSBsXXKEDpxq9RIaq0vr+3NzpUWkznwa7bKwHrfQ6y1Cy2VK2l il9SoBYtdNefAKHPvFeayo//54dam1KRfEWe/vlrwjdXaVzRRazDamL2TChBb3zLH/Vq H2/51mUhmsyurS3ODqZ+dFiyRIRDfoTCN/qKEMhaLn7cLVjBMaZHAHgmEp/aMuUXS8Ux LFsw== X-Gm-Message-State: AJcUukdRBw3uxEeh+uRwl3kHBQhfqYQktmnkTJav3UMqea7L1jS9s4VA SL5rXaVq2RMYTd44Cg6EcNRrBw== X-Google-Smtp-Source: ALg8bN4MaYkHKLb3gsXffS7gr8jUws92VRLpo2aDZxWHnj/3DbQkCjZ75FX7uGRWMiG6nViOZuPvYA== X-Received: by 2002:a63:6cc:: with SMTP id 195mr3725360pgg.401.1545423010054; Fri, 21 Dec 2018 12:10:10 -0800 (PST) Received: from evgreen2.mtv.corp.google.com ([2620:15c:202:201:ffda:7716:9afc:1301]) by smtp.gmail.com with ESMTPSA id o1sm35300406pgn.63.2018.12.21.12.10.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 21 Dec 2018 12:10:09 -0800 (PST) From: Evan Green To: Andy Gross , Bjorn Andersson Cc: Brian Norris , Ben Chan , Evan Green , linux-arm-msm@vger.kernel.org, David Brown , linux-kernel@vger.kernel.org Subject: [PATCH v2 0/2] soc: qcom: rmtfs-mem: Support non-root rmtfs daemons Date: Fri, 21 Dec 2018 12:09:59 -0800 Message-Id: <20181221201001.160613-1-evgreen@chromium.org> X-Mailer: git-send-email 2.18.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series contains minor fixes needed to better support running an rmtfs daemon from an unprivileged process: - Enable uevents on the child character device by adding a struct class to the parent. I needed these so that I could change the ownership of /dev/qcom_rmtfs_mem1, and drove myself crazy trying to understand why my udev rules never fired. - Enable access to phys_addr and size sysfs attributes. The daemon needs to read these, and they don't really contain anything sensitive, so expose them. I still need CAP_NET_ADMIN to be able to bind to the right qrtr port, but at least with these changes I can run as a different user, and drop all other privileges. Changes in v2: - Moved class registration/deregistration into init/exit routines (Brian) Evan Green (2): soc: qcom: rmtfs-mem: Add class to enable uevents soc: qcom: rmtfs-mem: Make sysfs attributes world-readable drivers/soc/qcom/rmtfs_mem.c | 35 ++++++++++++++++++++++++----------- 1 file changed, 24 insertions(+), 11 deletions(-) -- 2.18.1