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=-7.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 1C61EC35DF9 for ; Tue, 25 Feb 2020 11:11:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0FA520726 for ; Tue, 25 Feb 2020 11:11:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=web.de header.i=@web.de header.b="T8u6NHzY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730407AbgBYLLj (ORCPT ); Tue, 25 Feb 2020 06:11:39 -0500 Received: from mout.web.de ([217.72.192.78]:59527 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728963AbgBYLLj (ORCPT ); Tue, 25 Feb 2020 06:11:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1582629025; bh=D2XHRvOFPR9WzZoqGxrex+WWhHl9ZTf9IK53kE+n8Y8=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=T8u6NHzYxSvNCz2m+WAQnq7p/qDqMcEO3J8/n8+VtF4DdG0F8MgCLuBjERDQXGcg5 25XM/oJfZM+L4jSRL6aL2L8//eW6TtEGD6AMUSEWKCbIjARpPY/ppHrj0wCLeHsRkx zMr1t1Z8ota3E10J8faqj9ztxsk8y94J2nLlPqyM= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([93.131.118.181]) by smtp.web.de (mrweb102 [213.165.67.124]) with ESMTPSA (Nemesis) id 0M8Qpi-1jKWWZ1JVC-00vuYF; Tue, 25 Feb 2020 12:10:25 +0100 Subject: Re: [for-next][12/26] Documentation: bootconfig: Add a doc for extended boot config To: Masami Hiramatsu , Steven Rostedt , linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Alexey Dobriyan , Andrew Morton , Arnaldo Carvalho de Melo , Frank Rowand , Greg Kroah-Hartman , Ingo Molnar , Jiri Olsa , Jonathan Corbet , Linus Torvalds , Namhyung Kim , Randy Dunlap , Rob Herring , Thomas Gleixner , Tim Bird , Tom Zanussi References: <23e371ca-5df8-3ae3-c685-b01c07b55540@web.de> <20200220221340.2b66fd2051a5da74775c474b@kernel.org> <5ed96b7b-7485-1ea0-16e2-d39c14ae266d@web.de> <20200221191637.e9eed4268ff607a98200628c@kernel.org> <5ade73b0-a3e8-e71a-3685-6485f37ac8b7@web.de> <20200222131833.56a5be2d36033dc5a77a9f0b@kernel.org> <370e675a-598e-71db-8213-f5494b852a71@web.de> <20200223005615.79f308e2ca0717132bb2887b@kernel.org> <8cc7e621-c5e3-28fa-c789-0bb7c55d77d6@web.de> <20200224121302.5b730b519d550eb34da720a5@kernel.org> <25dd284f-6122-c01b-ef22-901c3e0bdf37@web.de> <20200225154903.f636acde809a304bfccf4995@kernel.org> <8c99a63b-b1b9-a1ba-fa2a-38d1573f18b1@web.de> <20200225192951.b7753d3cf31fda2dcaa12fdb@kernel.org> From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200225192951.b7753d3cf31fda2dcaa12fdb@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:/5Tt/uCj3wyA7n5TFQ3cI0ASAyi3YXld41xrivpNXRAt0WK/h85 BuEOEvagGLAncVD2m+vwnz3BNDnmNuXbRkNP8aveEaIPmPNScZG9H+xK818yF6N6EqzcPq7 dGkjggsris44/eLBdGbwyCv4xzj6QEnN77dOwtEu5nzWkFyo9flMcwPC26QI6KThweQj63b iWRkSZem5np5P8UEciOww== X-UI-Out-Filterresults: notjunk:1;V03:K0:ajs7gP3mvH8=:S2TfbiCeTwAVXvhy+Eacgh dGMOFxIrig23kDF/Q0TZ2U/8UPNHbTIaUIpLpflJXcrt9oC/P5jVwqwX+/OtX01GSMJNonLTK 3C4LiS5z8M9wu+Dhx+ig4K0Uin5HtwXe7fo7ssAMuYtutwmP2Uex/HgnI5SC9OOfH3R2mI75G 5Ve+W5ODTEgUizrq0l6pHtbfotu+M5DgUBa07hySXy99IYH8O0NwYvllGsqjwCrJOqfwfRq1A hBmI032RWRh3nKDDoJDt4yfg5HPOSSy43COIn0I6sDhy4B0SDxqFyELRB5qLB13IX1vJaU7pO wJuLwXkdFX2+RR62Lyohsntf/RY1Kz0Z+bsvNLqsHi2XrEwHCfWqyTFAG21ONQC5ydmpRmwCa OR4Uyp9nOT8NMCYUVksl09kyNLxYTW0wGjRjJoIa7H3SfmUwQiVaf4tKn1RfWQq+Ztu6f8YqZ zmBPPMGqsyxRMh0E8jW6vTqgfMaHP1I+F4S5ZbOQvqz1qGs3yf2afshvv76Z2RgHyrBh6sEX3 FO/979rAczXb6CnPz2kB7X1DFSRRQn3+LQNobuscxtPsPGmRIDUF/w8C5qg+St8Ytgv2P2j0U baJlf37KpdBNr4K0S6xp9lAkndvXhMOhdGdVGL8N2+N1oiqP+/N1+Cz2Xvv5Y2e9AkuPltQB5 TtIevgTowd5X9Jngj9qog6GcrrcinN8BPIIhc/TadmVIiS0dXfJ+ySZ0H0xzlryD80HDlHjEB Pd7kDmvRKWSEBf8B1omkL/XP6JmWguIoSu3vqMlXHrsh0Paf/QEvQfT4mdxlwrMykqV65SsPY 6WRJubmkWBp5HYCKoFnyw2IXYB8jpKhGZJEhbuxmpFk5InRLH7vjQdADf8mm7AAa3N8riOwtR Y27BTHysaat7Rqs5x7hSAFNyqRBsmrl+p36qp85GXcrrEZAS5xldJSeNpTAOAsLZL0BaPcybh OwqA0pZd9mnIO6lvJFk+k2F7BAKt6fL0A46RivlCebLijRQAn97wbIRtjj/AwnxBlAV/PGy9W nz5REDfkh7jRRVGsI77SAWWhYhYTznTg+LAwQkvtdumPeKyrMxtmkw596GI/60bYxgiJK0fnJ aZ0d3XKRuGaVcFgXaJLCzrR6vkQQYTMXzt/Ni71K2wOEkbALbRh6EoGr9iB+5l32ZetvUcrJk gQWd6hE83BhheleN/jVPThguYTxpZqclpMQoXiejOI8nXji1kq4UfhoidmddEVun0u5rauRXT OSIG0eCJ6GHGeUVF/ Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> The file format will trigger specific parsing efforts. > > Maybe. If someone is interested in expanding their command, (e.g. vim) > they can use EBNF to understand syntax, I hope so. > or directly reuse lib/bootconfig.c which provides a compact parser. :) I see some development challenges according to this design direction. This software component is using programming interfaces from the Linux kernel, isn't it? https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/l= ib/bootconfig.c?id=3Dc99b17ac03994525092fd66bed14b4a0c82f0b4d#n9 I guess that other approaches should be considered for the desired software reuse in this system configuration area. Is there a need to map key and value combinations directly to files (and directories) for a more convenient data processing by user-space proc= esses? Regards, Markus