From owner-freebsd-hackers Sun Oct 14 12:53:47 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from mass.dis.org (mass.dis.org [216.240.45.41]) by hub.freebsd.org (Postfix) with ESMTP id 9AF4C37B405 for ; Sun, 14 Oct 2001 12:53:44 -0700 (PDT) Received: from mass.dis.org (localhost [127.0.0.1]) by mass.dis.org (8.11.6/8.11.3) with ESMTP id f9EK4Ze01075; Sun, 14 Oct 2001 13:04:36 -0700 (PDT) (envelope-from msmith@mass.dis.org) Message-Id: <200110142004.f9EK4Ze01075@mass.dis.org> X-Mailer: exmh version 2.1.1 10/15/1999 To: Igor M Podlesny Cc: "Daniel C. Sobral" , Vadim Vygonets , freebsd-hackers@FreeBSD.ORG Subject: Re: loader.conf conditional assignment In-reply-to: Your message of "Sun, 14 Oct 2001 18:06:32 +0800." <20011014180632.A76030@ns.morning.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 14 Oct 2001 13:04:35 -0700 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > Is there any chance off implementing syntax like > > kernel=${kernel:-/kernel} > > which is obviously sh-compilant? I don't much like either of these proposals. My principal objection is that they're trying to solve the wrong problem. The original poster is setting $kernel in the DHCP client code, and then having it overwritten when defaults/loader.conf is parsed. If instead they set $dhcp_kernel, and then put kernel=$dhcp_kernel in their "real" loader.conf the entire problem should go away, and we don't have to extend any of the syntax. If there's a reason why this won't work (for example, I don't think that the code that parses loader.conf uses the script line parser, so it's not going to do variable expansion) then that probably needs to be addressed, since there are a lot of places where this sort of thing would be useful. Just my thoughts, anyway. -- ... every activity meets with opposition, everyone who acts has his rivals and unfortunately opponents also. But not because people want to be opponents, rather because the tasks and relationships force people to take different points of view. [Dr. Fritz Todt] V I C T O R Y N O T V E N G E A N C E To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message