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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 85E3FC433B4 for ; Tue, 11 May 2021 05:31:54 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 038B561920 for ; Tue, 11 May 2021 05:31:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 038B561920 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59392 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lgKzp-0007bW-5G for qemu-devel@archiver.kernel.org; Tue, 11 May 2021 01:31:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59826) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgKyu-0006rK-B1 for qemu-devel@nongnu.org; Tue, 11 May 2021 01:30:56 -0400 Received: from indium.canonical.com ([91.189.90.7]:59758) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lgKyr-00068C-IE for qemu-devel@nongnu.org; Tue, 11 May 2021 01:30:56 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.93 #5 (Debian)) id 1lgKyq-0002wQ-2r for ; Tue, 11 May 2021 05:30:52 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 147902E8060 for ; Tue, 11 May 2021 05:30:52 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Tue, 11 May 2021 05:20:39 -0000 From: Thomas Huth <1860914@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Incomplete; importance=Undecided; assignee=None; X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: felix.von.s th-huth X-Launchpad-Bug-Reporter: felix (felix.von.s) X-Launchpad-Bug-Modifier: Thomas Huth (th-huth) References: <158004768486.19485.8886711795112517187.malonedeb@gac.canonical.com> Message-Id: <162071043944.1889.15472799982141524485.malone@wampee.canonical.com> Subject: [Bug 1860914] Re: QEMU prepends pathnames to command lines of Multiboot kernels and modules, contrary to the specification X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="dccd804998035922efb3da0a725ecc923e2255f3"; Instance="production" X-Launchpad-Hash: 910a856dbb78f597b913f2ac5cba22382f06cbe9 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-Spam_score_int: -65 X-Spam_score: -6.6 X-Spam_bar: ------ X-Spam_report: (-6.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.248, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1860914 <1860914@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The QEMU project is currently moving its bug tracking to another system. For this we need to know which bugs are still valid and which could be closed already. Thus we are setting the bug state to "Incomplete" now. If the bug has already been fixed in the latest upstream version of QEMU, then please close this ticket as "Fix released". If it is not fixed yet and you think that this bug report here is still valid, then you have two options: 1) If you already have an account on gitlab.com, please open a new ticket for this problem in our new tracker here: https://gitlab.com/qemu-project/qemu/-/issues and then close this ticket here on Launchpad (or let it expire auto- matically after 60 days). Please mention the URL of this bug ticket on Launchpad in the new ticket on GitLab. 2) If you don't have an account on gitlab.com and don't intend to get one, but still would like to keep this ticket opened, then please switch the state back to "New" or "Confirmed" within the next 60 days (other- wise it will get closed as "Expired"). We will then eventually migrate the ticket automatically to the new system (but you won't be the reporter of the bug in the new system and thus you won't get notified on changes anymore). Thank you and sorry for the inconvenience. ** Changed in: qemu Status: New =3D> Incomplete -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1860914 Title: QEMU prepends pathnames to command lines of Multiboot kernels and modules, contrary to the specification Status in QEMU: Incomplete Bug description: When QEMU is launched with the -kernel option to boot a Multiboot image, the command line passed in the -append option is additionally prefixed the pathname of the kernel image and a space. Likewise, module command lines passed in the -initrd option are passed with the module pathname and a space prepended. At the very least the former is contary to what is prescribed in the Multiboot specification, version 0.6.96[0], which says in =C2=A73.3: > General-purpose boot loaders should allow user a complete control on command line independently of other factors like image name. With respect to module command lines, the spec is less clear, but GNU GRUB2 (the de facto reference implementation) does not prepend pathnames to command lines of either. I haven't tested GRUB legacy, but I assume it exhibits the same behaviour. It would be strange if passing pathnames was in fact intended; bootloader pathnames are useless to the loaded kernel, which may potentially have a completely different view of the file system from the bootloader. Also, given that a kernel pathname may contain spaces, skipping it in the command line cannot be done reliably, while loading a Multiboot module from a pathname that contains spaces is outright impossible. Found in 4.2.0, but latest git master apparently behaves the same. [0]: https://www.gnu.org/software/grub/manual/multiboot/multiboot.html To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1860914/+subscriptions