From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 61783 invoked by alias); 9 Oct 2018 19:06:49 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 61771 invoked by uid 89); 9 Oct 2018 19:06:49 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy= X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 09 Oct 2018 19:06:47 +0000 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BAC4C30833A9; Tue, 9 Oct 2018 19:06:46 +0000 (UTC) Received: from [127.0.0.1] (ovpn04.gateway.prod.ext.ams2.redhat.com [10.39.146.4]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1957365F53; Tue, 9 Oct 2018 19:06:45 +0000 (UTC) Subject: Re: [PATCH] GDBSERVER: Listen on a unix domain (instead of TCP) socket if requested. To: John Darrington References: <20181009173257.11250-1-john@darrington.wattle.id.au> <20181009173257.11250-2-john@darrington.wattle.id.au> <20181009184124.bq2yx4qttsmj22t4@jocasta.intra> <84efe0c6-ce7e-9844-e7ad-83f0041435ec@redhat.com> <20181009190023.6xmppigvvzjqtfzp@jocasta.intra> Cc: gdb-patches@sourceware.org From: Pedro Alves Message-ID: Date: Tue, 09 Oct 2018 19:06:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181009190023.6xmppigvvzjqtfzp@jocasta.intra> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-SW-Source: 2018-10/txt/msg00238.txt.bz2 -- Thanks, Pedro Alves On 10/09/2018 08:00 PM, John Darrington wrote: > On Tue, Oct 09, 2018 at 07:53:55PM +0100, Pedro Alves wrote: > On 10/09/2018 07:41 PM, John Darrington wrote: > > On Tue, Oct 09, 2018 at 07:02:14PM +0100, Pedro Alves wrote: > > On 10/09/2018 06:32 PM, John Darrington wrote: > > > When invoking gdbserver, if the COMM parameter does not include a colon (:) and > > > is not the name of an existing character device, then a local (unix) domain > > > socket will be created with that name and gdbserver will listen for connections > > > on that. > > > > Is that "colon/no-colon" magic something that tools frequently do? > > > > Not exactly. Tools with which I'm familiar with work as follows: > > > > :1234 Creates a unix domain socket on the local host called 1234 > > localhost:1234 Listens on TCP port 1234 > > > > which is the way I think gdb ought to work, but this would be > > inconsistent with it's current behaviour and cause confusion if somebody > > used an old version of gdb with a new version of gdbserver or > > vici-versa. > > In that example you didn't even pass a path to a unix domain socket. > You let the tool create it, I suppose. It doesn't feel like > apples to apples. > > In those tools you know, how would you pass the path to the local > socket then? > > > If you give no path, it'll refer to a socket in the current working > directory. An example with a path would be :/tmp/this/socket Ah, I see now. Still, yeah, I don't think we can change GDB like that. Thanks, Pedro Alves