From owner-svn-src-head@FreeBSD.ORG Thu Jan 2 19:14:22 2014 Return-Path: Delivered-To: svn-src-head@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 48DD5128; Thu, 2 Jan 2014 19:14:22 +0000 (UTC) Received: from h2.funkthat.com (gate2.funkthat.com [208.87.223.18]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 9DA251831; Thu, 2 Jan 2014 19:14:21 +0000 (UTC) Received: from h2.funkthat.com (localhost [127.0.0.1]) by h2.funkthat.com (8.14.3/8.14.3) with ESMTP id s02JEKVU020732 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 2 Jan 2014 11:14:21 -0800 (PST) (envelope-from jmg@h2.funkthat.com) Received: (from jmg@localhost) by h2.funkthat.com (8.14.3/8.14.3/Submit) id s02JEKn1020731; Thu, 2 Jan 2014 11:14:20 -0800 (PST) (envelope-from jmg) Date: Thu, 2 Jan 2014 11:14:20 -0800 From: John-Mark Gurney To: Konstantin Belousov Subject: Re: svn commit: r255219 - in head: contrib/tcpdump lib/libc lib/libc/capability lib/libc/include lib/libc/sys lib/libprocstat sbin/dhclient sbin/hastd sys/amd64/linux32 sys/bsm sys/cddl/compat/opensola... Message-ID: <20140102191420.GB99167@funkthat.com> References: <201309050009.r8509vsE061271@svn.freebsd.org> <67DFFD7B-01DE-4862-BED3-DD42EB92A8F4@freebsd.org> <20140102093322.GA1655@garage.freebsd.pl> <52C53F69.3040507@mu.org> <20140102104904.GB1655@garage.freebsd.pl> <20140102131308.GI59496@kib.kiev.ua> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140102131308.GI59496@kib.kiev.ua> User-Agent: Mutt/1.4.2.3i X-Operating-System: FreeBSD 7.2-RELEASE i386 X-PGP-Fingerprint: 54BA 873B 6515 3F10 9E88 9322 9CB1 8F74 6D3F A396 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ X-Resume: http://resnet.uoregon.edu/~gurney_j/resume.html X-to-the-FBI-CIA-and-NSA: HI! HOW YA DOIN? can i haz chizburger? X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.2 (h2.funkthat.com [127.0.0.1]); Thu, 02 Jan 2014 11:14:21 -0800 (PST) Cc: src-committers@FreeBSD.org, Pawel Jakub Dawidek , svn-src-all@FreeBSD.org, Alfred Perlstein , Stanislav Sedov , svn-src-head@FreeBSD.org X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Jan 2014 19:14:22 -0000 Konstantin Belousov wrote this message on Thu, Jan 02, 2014 at 15:13 +0200: > > > Afaik you could just remove the "spare" and steal 2 or 4 entries from > > > _kf_ispare until it is sorted. > > > > Yes, this would work for current cap_rights_t structure, at least for > > i386 and amd64, but would only allow to expand the structure by one > > uint64_t in the future (which might or might not be enough). The > > cap_rights_t structure is designed to be expanded to 5 uint64_ts without > > breaking ABI. I don't want to stuck with current cap_rights_t that is > > designed to expand, but cannot be, because kinfo_file wasn't modified at > > the start of a major branch. > The ABI stability is not limited to the single branch. It must be > preserved across whole project lifetime. Umm. when did this policy change happen? I thought ABI compatibility was limited to major releases of FreeBSD? How are you suppose to do any work if you can't break ABI ever? I did a quick search for "freebsd policy abi breakage" and found some mailing list posts about this, but no authoritative statement... Of course the problem is that when we move to (ASN.1/libnv/ctf/YAML/JSON/XML/etc) we will break ABI compatibility too, or introduce tons of compatibility code that will rot... -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."