Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755587Ab1EYVGU (ORCPT ); Wed, 25 May 2011 17:06:20 -0400 Received: from lennier.cc.vt.edu ([198.82.162.213]:57299 "EHLO lennier.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754112Ab1EYVGR (ORCPT ); Wed, 25 May 2011 17:06:17 -0400 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.3-dev To: "Ted Ts'o" Cc: Michael Witten , Mike Galbraith , Richard Yao , linux-kernel@vger.kernel.org Subject: Re: UNIX Compatibility In-Reply-To: Your message of "Wed, 25 May 2011 10:36:02 EDT." <20110525143602.GE8476@thunk.org> From: Valdis.Kletnieks@vt.edu References: <20110524181619.GC26055@thunk.org> <1306297108.4819.28.camel@marge.simson.net> <64e4614dda6f4558a68a314d7b5979b5-mfwitten@gmail.com> <20110525143602.GE8476@thunk.org> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1306357572_2932P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Wed, 25 May 2011 17:06:12 -0400 Message-ID: <25621.1306357572@localhost> X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu Valdis.Kletnieks@vt.edu 2 pass X-Mirapoint-IP-Reputation: reputation=neutral-1, source=Fixed, refid=n/a, actions=MAILHURDLE SPF TAG X-Junkmail-Status: score=10/50, host=dagger.cc.vt.edu X-Junkmail-Signature-Raw: score=unknown, refid=str=0001.0A020201.4DDD6F45.004F,ss=1,fgs=0, ip=0.0.0.0, so=2010-07-22 22:03:31, dmn=2009-09-10 00:05:08, mode=single engine X-Junkmail-IWF: false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1669 Lines: 43 --==_Exmh_1306357572_2932P Content-Type: text/plain; charset=us-ascii On Wed, 25 May 2011 10:36:02 EDT, "Ted Ts'o" said: > And of course, the supreme irony is that if your OS is encumbered with > AT&T copyrighted code, you can use the Unix trademark even if you are > not conformant to the Single Unix Specification. (There's an escape > clause for AT&T derived-Unix systems, which are automatically "Unix" > even if they fail the SUS.) > > Given all of that, what _use_ is the Single Unix Specification at this > point? What's the _point_? We're pretty shameless in mugging other operating systems for good new ideas (witness the recent patches stealing SEEK_HOLE and SEEK_DATA from Solaris), but most of the time, the neat stuff like that isn't part of SUS anyhow, because only one or two Unix-derived systems implemented the function. Single most useful thing left in SUS? The few places we're *really* divergent from SUS, we can usually go back and read the SUS spec for the function in question and remind ourself that yes, we diverged for a reason - the spec was on total crack. :) --==_Exmh_1306357572_2932P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFN3W9EcC3lWbTT17ARApqUAJ9OfLaOF/Q9XmIUjWVXPLB0bLKsagCgjt3n +OPfCN9cweH0/REnQJO/Uuo= =FQrA -----END PGP SIGNATURE----- --==_Exmh_1306357572_2932P-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/