From owner-freebsd-current@freebsd.org Fri Sep 29 05:54:54 2017 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2920CE2419B for ; Fri, 29 Sep 2017 05:54:54 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: from mail-ua0-x229.google.com (mail-ua0-x229.google.com [IPv6:2607:f8b0:400c:c08::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id CDB1D7F0F3 for ; Fri, 29 Sep 2017 05:54:53 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: by mail-ua0-x229.google.com with SMTP id y5so161257uai.2 for ; Thu, 28 Sep 2017 22:54:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=9VwfEa0bQeYl/KXxBWJD2nfxB4J0wNCopHX0Zf+buJQ=; b=LaUal1f/llCmH2SJRsj1rDRnEaV2ecw9y27dAXhyCPKZgFqAO3UZaNSMcSUNx4gPeb iD9ddINwJ4uNtAf0NueWeH7NudfZL4oeWoPVBTJlTliR/eIuUfCjcEEed+7XH4Yw+J4P vUm9yYy41KoBgzceCTH8zbvfzd1tfJM0QsPdRedqIX5bAwITUz8gaSb2oviOUYHkaMNN A1kDCRk7piwhUAqgSC3BuuE3dAAGf43XXn/ONSyODAseUW45Km9nMo5sEthL8xDxWTNC a0hZ+MN6SLFIFqJ96a0Kyky4QxfjkFAoyyJzPRREJElX49sW4o+9HDovl5fjQPxR2O52 yYBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=9VwfEa0bQeYl/KXxBWJD2nfxB4J0wNCopHX0Zf+buJQ=; b=AcQR6bDe/nqDE35y98iZgiu/jWkKTXwtGAmBo8GzDBHOCFqQPaMWOqi2Vf8BmJY4H+ Qk0MooekaGbLET95oixpYbGLrRmcuIR9Q1fkzhsG7uxhPesTT0WAeFUtVLV+vQLRY1yU Mzz4e9lDxMWDf3jeXlZW5CvVv299SAbf5ychriy3P8ayFMYhXKFWOVXb/Qf+kzazUQ/K bPjwBw0QkVZdFK19cRor859YGR7hlCK4MmtNp3tv4PFDh6CRGWhCbJFGRTBibUQ5bd1U JXrssH5eWA2Ne8eeRmRDc9nexu06zijuUMmUGfHus8YlImUhuVh+IL4/oY4RsuvyZrLt ndbg== X-Gm-Message-State: AHPjjUhDcNh2ZYq1Lnr1Yo1IKv43BA84OBpHD9UQI4PXj8N364XhtqpI 35WAD1LF7+m5YWQo3ScENPzeyhln//5k/upDomI= X-Google-Smtp-Source: AOwi7QAZcA9c5NcHM5nCxhkVdbR/vSLsM4aL542OxS88Rw6B/uKIe9J0QrFUzGyHqFlnhsg2q9Y+aVV5rdseH13Iz90= X-Received: by 10.176.4.199 with SMTP id 65mr4062624uaw.47.1506664492687; Thu, 28 Sep 2017 22:54:52 -0700 (PDT) MIME-Version: 1.0 Sender: kob6558@gmail.com Received: by 10.103.134.194 with HTTP; Thu, 28 Sep 2017 22:54:52 -0700 (PDT) In-Reply-To: <201709290109.v8T19oMO028898@pdx.rh.CN85.dnsmgr.net> References: <201709290109.v8T19oMO028898@pdx.rh.CN85.dnsmgr.net> From: Kevin Oberman Date: Thu, 28 Sep 2017 22:54:52 -0700 X-Google-Sender-Auth: I4FBsSNQJjqflrAWP9ab1TMNV-8 Message-ID: Subject: Re: How do GEOM_PART_* options configure geom_part_* modules?? To: "Rodney W. Grimes" Cc: Warner Losh , Nick Hibma , FreeBSD Current Mailing List Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Sep 2017 05:54:54 -0000 On Thu, Sep 28, 2017 at 6:09 PM, Rodney W. Grimes < freebsd-rwg@pdx.rh.cn85.dnsmgr.net> wrote: > > On Thu, Sep 28, 2017 at 11:12 AM, Kevin Oberman > wrote: > > > > > On Thu, Sep 28, 2017 at 9:13 AM, Warner Losh wrote: > > > > > >> On Thu, Sep 28, 2017 at 10:00 AM, Nick Hibma > > >> wrote: > > >> > > >> > I created a new kernel config file from scratch, wondered what the > > >> > GEOM_PART_MBR option and friends were doing, search for them, didn't > > >> find > > >> > them in the tree, and deleted them from my config. But... de > resulting > > >> disk > > >> > image didn't boot, because of the fact that it didn't recognise the > MBR > > >> > partitions (it only had a single diskid entry on the mount-root > prompt). > > >> > > > >> > Can anyone explain to me how these kernel options work, as in: they > are > > >> > defined in kernel configs and as a consequence in opt_geom.h, but > how > > >> are > > >> > they actually used to select which geom_part_* modules/kernel parts > to > > >> > build? I thought these options were translated to stuff that cpp > would > > >> use, > > >> > but there are not uses of for example GEOM_PART_MBR anywhere for > > >> example! > > >> > > > >> > > > >> > The module always build them because they are listed in the module's > > >> > Makefile. > > >> > > > >> > The kernel only sometimes does. Here's the key lines from > conf/files: > > >> > files:geom/geom_bsd_enc.c optional geom_bsd | geom_part_bsd > > >> > files:geom/part/g_part_apm.c optional geom_part_apm > > >> > files:geom/part/g_part_bsd.c optional geom_part_bsd > > >> > files:geom/part/g_part_bsd64.c optional geom_part_bsd64 > > >> > files:geom/part/g_part_ebr.c optional geom_part_ebr > > >> > files:geom/part/g_part_gpt.c optional geom_part_gpt > > >> > files:geom/part/g_part_ldm.c optional geom_part_ldm > > >> > files:geom/part/g_part_mbr.c optional geom_part_mbr > > >> > files:geom/part/g_part_vtoc8.c optional geom_part_vtoc8 > > >> > > > >> > which turn on/off which files get included. config "helpfully" > converts > > >> the > > >> > upper case options to lower case for this. > > >> > > > >> > Warner > > >> > > > >> > > > >> > *slaps forehead* Goose chase! > > >> > > > >> > I actually knew that... and, at the time, thought it was weird > > >> behaviour. > > >> > ''grep" would not have failed me if those options would be uppercase > > >> there > > >> > ... > > >> > > > >> > > >> I've been nibbled to death by these geese often enough to have a > PTSD-like > > >> reaction when someone mentions it and habitually add -i to my greps... > > >> > > >> Warner > > > > > > > > > This horrid POLA violation seems to have been in FreeBSD configuration > > > since at least 3.0 and probably goes back to the creation of the > > > configuration process. > > > > > > Any idea why such a horrible POLA was ever introduced? Seems like an > > > obviously bad idea in an OS that is ALMOST always case sensitive. > > > > > > > It's received code from the old 4.3 BSD config program (or maybe the > net-2 > > config program). > > We had best not have any code direct from 4.3 or net-2, it should be from > 4.4BSDLite, any code prior to that is subject of the lawsuit. > > > -- > Rod Grimes > rgrimes@freebsd.org > I believe any code in 4.3 BSD that was developed by CSRG was not subject of the suit. Copyright on that code by the Regents of UC, not AT&T. (So was any code I wrote.) Many utilities were from v8 or descended from AT&T code, but a great deal was not. It was what UC was getting paid for. My first Unix experience was with 4.2 BSD and I was not concerned with copyrights as I was working for UC (at least my paychecks said so) and we had an AT&T license for Unix, so it was simply not an issue. The system was a VAX-11/750 at the UC-Davis Department of Applied Science located at Lawrence Livermore Lab. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683