From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Solaris dldump Date: Mon, 19 Aug 2024 17:39:24 +0300 Message-ID: <867cccy3tv.fsf@gnu.org> References: <6b0199db-60e3-4a41-8481-414688db0e18@emvision.com> <87ttfihbbn.fsf@yahoo.com> <87h6bhgzc2.fsf@yahoo.com> <87plq4enze.fsf@protonmail.com> <87cym4hgil.fsf@yahoo.com> <87h6bgems9.fsf@protonmail.com> <86bk1oy8ns.fsf@gnu.org> <87bk1oeich.fsf@protonmail.com> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="7875"; mail-complaints-to="usenet@ciao.gmane.io" Cc: luangruo@yahoo.com, stefankangas@gmail.com, ali_gnu2@emvision.com, emacs-devel@gnu.org To: Pip Cet Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Aug 19 16:40:17 2024 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sg3YO-0001pn-9c for ged-emacs-devel@m.gmane-mx.org; Mon, 19 Aug 2024 16:40:16 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sg3Y0-0007me-T9; Mon, 19 Aug 2024 10:39:52 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sg3Y0-0007mS-2f for emacs-devel@gnu.org; Mon, 19 Aug 2024 10:39:52 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sg3Xz-0003o5-Dl; Mon, 19 Aug 2024 10:39:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=vApeoPt1sbjv7Qr98aqgjODPWNdBPS6LnSV2U1GnBpU=; b=Tzsl6rGiovN4 wQrJkao4mxWDT45En909B4XReBFkloSXa+CXX0AeYr0XXHVoiXV2Qjnutx66h4TkolKLKMETK1YYd Cgf8f5AqJ6VCdXO2+9sssRe9ZL0kfmFK9OYBoY/o9VrpcZ1j3CUhy8wTkM49hwyl6T/1yiCcoSHCk NRrHVWl83aSTaZ8zwt3YWu25oWAdXL3OofETsclaBvrOphKZ9Xef4rv+aZcGUnWbJv9fPHSxH0gsy SglJfQ0L7CKqAj5QIEGopmxzcK+FVA5kXTSkSA4qBLZ7y2SSOuuOOSgDL0XDmmkU155UgWX+KKmv8 GIbMcJ5Dy3Bpd76+9K36lw==; In-Reply-To: <87bk1oeich.fsf@protonmail.com> (message from Pip Cet on Mon, 19 Aug 2024 13:46:11 +0000) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:322924 Archived-At: > Date: Mon, 19 Aug 2024 13:46:11 +0000 > From: Pip Cet > Cc: luangruo@yahoo.com, stefankangas@gmail.com, ali_gnu2@emvision.com, emacs-devel@gnu.org > > I've just gone through configure.ac removing all the code that depends > on unexec (no doubt I've missed some), and I must say I now agree it is > time for unexec to go. In particular, it had so far escaped my > attention that it's incompatible with native compilation! All the major new feature don't support unexec; native-compilation was just the first. > And while I am skeptical of the value of ASLR, it wuold be really > embarrassing to run into a security issue that's exploitable only > because Emacs disables ASLR for unexec builds. We disable ASLR only during the build, AFAIR, not when we run the dumped Emacs. > >> DOS in particular is what triggered my question: given the limitations > >> of DOS systems, it's quite possible temacs-as-emacs just wouldn't fly on > >> those machines. > > > > Those limitations are not relevant in our case. > > I think it's relevant whether DOS will become completely unusable or > merely difficult to use once unexec is removed, and what can be done to > fix it. I was talking specifically about running temacs. > Does the DOS port work on free DOS clones? Yes, AFAIK (although I myself only run the DOS port on Windows for many years now). > And is there a way to gain access to a Solaris machine to fix > pdumper on it? No idea, perhaps Po Lu does.