From owner-svn-src-head@FreeBSD.ORG Sun Feb 12 22:37:11 2012 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0C68D106566B; Sun, 12 Feb 2012 22:37:11 +0000 (UTC) (envelope-from jos@catnook.com) Received: from mail-tul01m020-f182.google.com (mail-tul01m020-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id 566778FC14; Sun, 12 Feb 2012 22:37:10 +0000 (UTC) Received: by obcwo16 with SMTP id wo16so7759319obc.13 for ; Sun, 12 Feb 2012 14:37:10 -0800 (PST) MIME-Version: 1.0 Received: by 10.182.47.37 with SMTP id a5mr9804227obn.41.1329086229951; Sun, 12 Feb 2012 14:37:09 -0800 (PST) Received: by 10.182.116.33 with HTTP; Sun, 12 Feb 2012 14:37:09 -0800 (PST) Received: by 10.182.116.33 with HTTP; Sun, 12 Feb 2012 14:37:09 -0800 (PST) In-Reply-To: <86wr7r4u1q.fsf@kopusha.home.net> References: <20120205214647.GI30033@garage.freebsd.pl> <86sjiov29o.fsf@in138.ua3> <20120206082706.GA1324@garage.freebsd.pl> <86wr7zmy8f.fsf@kopusha.home.net> <20120206221742.GA1336@garage.freebsd.pl> <86liodu3me.fsf@in138.ua3> <20120208090600.GA1308@garage.freebsd.pl> <86sjihsln4.fsf@kopusha.home.net> <4F365C10.5050607@zonov.org> <861upz6fcg.fsf@kopusha.home.net> <20120212200253.GC1355@garage.freebsd.pl> <4F38240B.5040507@zonov.org> <86wr7r4u1q.fsf@kopusha.home.net> Date: Sun, 12 Feb 2012 14:37:09 -0800 Message-ID: From: Jos Backus To: Mikolaj Golub X-Gm-Message-State: ALoCoQn+ugJNH6lgk/EV86J1965QwWHXA/GkKp8KOTIua0q2QS1KPVvnL+VeEIT4AJQVw3Ofj0cM Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: src-committers@freebsd.org, Pawel Jakub Dawidek , Guy Helmer , svn-src-all@freebsd.org, Andrey Zonov , svn-src-head@freebsd.org Subject: Re: svn commit: r230869 - head/usr.sbin/daemon X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 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: Sun, 12 Feb 2012 22:37:11 -0000 On Feb 12, 2012 1:32 PM, "Mikolaj Golub" wrote: > > > On Sun, 12 Feb 2012 12:56:58 -0800 Jos Backus wrote: > > JB> Right. So why not add a Unix socket listener to daemon(8) so the rc.d > JB> script can send commands over the socket instead of using the pidfile? > JB> This is what supervise/svc let you do today. > > JB> I don't understand why this solution isn't obvious once you are > JB> committed to running daemon(8) for each service anyway. And then you > JB> don't need pidfiles because now you have a much better, standard > JB> control interface (sending commands to daemon(8) and gathering > JB> responses). > > Why do you think one is committed to running daemon(8) for each service? > daemon(8) is for a program that can't daemonize itself and you want an easy > way to run it detached from a terminal. And have an easy way to integrate it > in rc(8) using rc.subr(8). And rc.subr(8) knows about pidfiles but knows > nothing about unix sockets. I realize that. But ISTR someone mentioned earlier keeping daemon(8) running to keep the pidfile open or something to that effect. > > Although I don't say that the idea to use a socket file for monitoring and > control is bad in general. Right. This approach has a number of benefits. I emailed the daemontools- encore author about including it in FreeBSD but so far he hasn't responded. Jos > > -- > Mikolaj Golub