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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 2179BC63777 for ; Wed, 18 Nov 2020 15:35:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D048024785 for ; Wed, 18 Nov 2020 15:35:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="c7R6w1xv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727266AbgKRPfW (ORCPT ); Wed, 18 Nov 2020 10:35:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:47032 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725814AbgKRPfV (ORCPT ); Wed, 18 Nov 2020 10:35:21 -0500 Received: from localhost.localdomain (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 742E92477C; Wed, 18 Nov 2020 15:35:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605713721; bh=YIBd7Q8u/sR9Z/z7ziUGOG9UyMZ1x7BkzlRe9c4fu0Q=; h=From:To:Cc:Subject:Date:From; b=c7R6w1xvBHsSnDJu7YT8x6viO1JnD5yI6BSHhdR7uuZ34NJKvx2RfOb5MyM8IuExa addolZX1lpGwTuPVlhsDX57zGz1aNRSQe1r5dSIVn6y0LtUfGoW5EMJkekD8dFtCYT ON9nX2GaWz5mSPNepXUyl7Bh0WTIpXLm67FKXKSQ= From: Masami Hiramatsu To: Steven Rostedt , Linus Torvalds Cc: Chen Yu , Chen Yu , Masami Hiramatsu , LKML , Ingo Molnar , Jonathan Corbet Subject: [PATCH v4 0/4] tools/bootconfig: Align the bootconfig applied initrd Date: Thu, 19 Nov 2020 00:35:17 +0900 Message-Id: <160571371674.277955.11736890010190945946.stgit@devnote2> X-Mailer: git-send-email 2.25.1 User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, This is the 4th version of the bootconfig tool update to align the total size of initrd + bootconfig to 4. Previous version is here; https://lkml.kernel.org/r/160560676899.144950.4148778261999789656.stgit@devnote2 This version adds a new errno after printf fix patch as [1/4]. To adjust the file size, the bootconfig tool adds padding null characters in between the boot configuration data and the footer. The changing points are - The bootconfig applied initrd image size is aligned to 4. - To insert the padding null ('\0') bytes, the size in the footer can be bigger than the actual bootconfig file size. - But the max size of the boot configuration file is same, because the max size doesn't include the last null characters. In this series I keep 4 bytes aligned instead of longer size, because only I could found was that the grub might align the initrd filesize to 4, and U-Boot/EDK2 would not change it. So I couldn't say what is the best size. Anyway, I updated the documentation too, which clearly says that the above changing points, and if the bootloader pass the wrong size, kernel will not find bootconfig from the initrd. Thank you, --- Masami Hiramatsu (4): tools/bootconfig: Fix errno reference after printf() tools/bootconfig: Fix to check the write failure correctly tools/bootconfig: Align the bootconfig applied initrd image size to 4 docs: bootconfig: Update file format on initrd image tools/bootconfig/main.c | 109 ++++++++++++++++++++++------------- tools/bootconfig/test-bootconfig.sh | 6 ++ 2 files changed, 75 insertions(+), 40 deletions(-) -- Masami Hiramatsu (Linaro)