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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable 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 A3C7DC43381 for ; Wed, 6 Mar 2019 17:45:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7952520661 for ; Wed, 6 Mar 2019 17:45:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551894333; bh=fnaFw823APjxHulQ4+6wwEYV5Cn6l0+jzGalebq3cFY=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=eAn95Xceac7OwbyMm//tMyv9MauO8uI1LIqx6uDRPDQHVp/0Hlubq7GIGak3ulznZ FttzibHenDbVwB7Cbgd0UtA0w3WGbKtQcXLxfxwD6oPwKZtQ2CUOWo02jYfZIa6P6l zLMijwqlo9ebdqSGEkNsKiA2Jzjgq/IRkwweuTB8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730475AbfCFRp2 (ORCPT ); Wed, 6 Mar 2019 12:45:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:50930 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726782AbfCFRp1 (ORCPT ); Wed, 6 Mar 2019 12:45:27 -0500 Received: from mail-wr1-f50.google.com (mail-wr1-f50.google.com [209.85.221.50]) (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 EA58C2147A for ; Wed, 6 Mar 2019 17:45:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551894327; bh=fnaFw823APjxHulQ4+6wwEYV5Cn6l0+jzGalebq3cFY=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=Tt75t3PXaPmNbY3DTWJzmy9Rs6w36M0YZa4XASyddvIfHPuG/skHNIJyFTshoObxL n+7RBdXOaTlfo6hGqNZNmLr34oNIzSwInYVKcVpT/bfMo/NQu7Asb3uACAN2hkGENY nTGGdRqHek6KNUqfqEOS7l6vARJwOZZfxTM2Kas8= Received: by mail-wr1-f50.google.com with SMTP id q1so14416415wrp.7 for ; Wed, 06 Mar 2019 09:45:26 -0800 (PST) X-Gm-Message-State: APjAAAVf9rPTVrz+Ca7HUy5wUMeVNmtBwY/5d+oEALQjv+eRlfVd25Db OQeTxMf5VjpelBOw3RfiaY2FXxjGgRqMbgb1rrCqPg== X-Google-Smtp-Source: APXvYqycCiWUyBWek2cV3rb2VRLlGPzW1OwTHX7jDqXVifhITwkrmYdgvwZ+wVv87HdZxGS8lIKrxdQZqeba+LPZxCw= X-Received: by 2002:adf:e747:: with SMTP id c7mr3724886wrn.176.1551894325330; Wed, 06 Mar 2019 09:45:25 -0800 (PST) MIME-Version: 1.0 References: <20190305091904.GB8256@zn.tnic> <20190305122218.GD13380@bombadil.infradead.org> <20190306141144.GD7930@mit.edu> <20190306165230.75b7d110@alans-desktop> In-Reply-To: <20190306165230.75b7d110@alans-desktop> From: Andy Lutomirski Date: Wed, 6 Mar 2019 09:45:13 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: a.out coredumping: fix or delete? To: Alan Cox Cc: "Theodore Y. Ts'o" , Thomas Gleixner , Matthew Wilcox , Borislav Petkov , Jann Horn , Al Viro , kernel list , Linux FS Devel , "the arch/x86 maintainers" , Linux API Content-Type: text/plain; charset="UTF-8" Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Wed, Mar 6, 2019 at 8:53 AM Alan Cox wrote: > > On Wed, 6 Mar 2019 09:11:44 -0500 > "Theodore Y. Ts'o" wrote: > > > On Wed, Mar 06, 2019 at 01:25:17PM +0100, Thomas Gleixner wrote: > > > > It's been 25 years since Linux added support for ELF. Can we just > > > > delete the a.out support entirely now? According to the Linux-ELF HOWTO, > > > > support was added in 1.1.52 (August 1994). It's pretty much necromancy > > > > at this point. > > > > > > The Kernel-Necrophilia cult members might disagree. :) > > > > > > But yes, good riddance. > > > > Doesn't Minix 1.0 use a.out? It *is* cool to be able to binaries from > > run dead operating systems. :-) > > Minixemu compiled fine ELF last time I checked 8). It does need a 32bit > system as it still uses virtual 86 model. > While I consider vm86() to be a giant turd, I also consider it to be supported and even wrote it a somewhat decent test suite :)