From owner-freebsd-current@FreeBSD.ORG Tue Dec 13 17:49:11 2011 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 950471065672; Tue, 13 Dec 2011 17:49:11 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id B490D8FC17; Tue, 13 Dec 2011 17:49:10 +0000 (UTC) Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua [212.40.38.101]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id TAA18562; Tue, 13 Dec 2011 19:49:08 +0200 (EET) (envelope-from avg@FreeBSD.org) Message-ID: <4EE79014.3070006@FreeBSD.org> Date: Tue, 13 Dec 2011 19:49:08 +0200 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:8.0) Gecko/20111109 Thunderbird/8.0 MIME-Version: 1.0 To: arch@FreeBSD.org, FreeBSD current References: <4EE52469.3050201@FreeBSD.org> In-Reply-To: <4EE52469.3050201@FreeBSD.org> X-Enigmail-Version: undefined Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Subject: Re: grabbing console (syscons) in kernel X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Tue, 13 Dec 2011 17:49:11 -0000 on 11/12/2011 23:45 Andriy Gapon said the following: > > There are a few cases when the kernel needs to interact with a user via syscons. > This is the cases where the kernel not only spews some output but also expects > some input. Some examples are: > - asking for a root filesystem specification > - entering ddb > - asking to press a key for reboot > > In this cases the kernel implicitly grabs the console for its own use. > I'd like to make action more explicit. > > What do you think about the approach and implementation in the following patches? > Thank you! > > https://gitorious.org/~avg/freebsd/avgbsd/commit/5248b49ebf84d98a0597fa5aa4d813a38f581acc > https://gitorious.org/~avg/freebsd/avgbsd/commit/a0849c52242378474bb2eaa41726376fbc4c5bf6 > https://gitorious.org/~avg/freebsd/avgbsd/commit/a67515cbd720b16f03ba435ed182966a8a338b15 > https://gitorious.org/~avg/freebsd/avgbsd/commit/b8864b68b4c0e26ece065a38301c305833be32eb > https://gitorious.org/~avg/freebsd/avgbsd/commit/1017ae425d8abecd7482bd6c6deaaf9f25f5c6cd I was advised that the above links might not be the best way to present the patches for review, so here are them as a single diff file: http://people.freebsd.org/~avg/cngrab.diff > P.S. one of the benefits is that a keyboard is put into and out of the polling > mode before getting all the required input and after that; not around each > character as it is done now in rather twisted way. > -- Andriy Gapon