From mike.gabriel@das-netzwerkteam.de Fri Jul 11 01:22:14 2014 Received: (at 543) by bugs.x2go.org; 10 Jul 2014 23:22:14 +0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on ymir.das-netzwerkteam.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.2 Received: from freya.das-netzwerkteam.de (freya.das-netzwerkteam.de [88.198.48.199]) by ymir.das-netzwerkteam.de (Postfix) with ESMTPS id 15DB75DB0D for <543@bugs.x2go.org>; Fri, 11 Jul 2014 01:22:14 +0200 (CEST) Received: from grimnir.das-netzwerkteam.de (grimnir.das-netzwerkteam.de [78.46.204.98]) by freya.das-netzwerkteam.de (Postfix) with ESMTPS id C4B4815B1; Fri, 11 Jul 2014 01:22:13 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by grimnir.das-netzwerkteam.de (Postfix) with ESMTP id BCF4B3BA64; Fri, 11 Jul 2014 01:22:13 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at grimnir.das-netzwerkteam.de Received: from grimnir.das-netzwerkteam.de ([127.0.0.1]) by localhost (grimnir.das-netzwerkteam.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id j6y07iYnco0p; Fri, 11 Jul 2014 01:22:13 +0200 (CEST) Received: from grimnir.das-netzwerkteam.de (localhost [127.0.0.1]) by grimnir.das-netzwerkteam.de (Postfix) with ESMTPS id 74DFA3BA25; Fri, 11 Jul 2014 01:22:13 +0200 (CEST) Received: from p5B3B9AEF.dip0.t-ipconnect.de (p5B3B9AEF.dip0.t-ipconnect.de [91.59.154.239]) by mail.das-netzwerkteam.de (Horde Framework) with HTTP; Thu, 10 Jul 2014 23:22:13 +0000 Date: Thu, 10 Jul 2014 23:22:13 +0000 Message-ID: <20140710232213.Horde.cTXi9G5e8PkovCdLzkXIdg3@mail.das-netzwerkteam.de> From: Mike Gabriel To: "Gregory R. Warnes" , 543@bugs.x2go.org Subject: Re: [X2Go-Dev] Bug#543: x2golistdesktops locks up if xwininfo does References: In-Reply-To: User-Agent: Internet Messaging Program (IMP) H5 (6.1.7) Accept-Language: en,de Organization: DAS-NETZWERKTEAM X-Originating-IP: 91.59.154.239 X-Remote-Browser: Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0 Iceweasel/30.0 Content-Type: multipart/signed; boundary="=_q5A1jhLufgFzl0vMfue6Rw1"; protocol="application/pgp-signature"; micalg=pgp-sha1 MIME-Version: 1.0 This message is in MIME format and has been PGP signed. --=_q5A1jhLufgFzl0vMfue6Rw1 Content-Type: text/plain; charset=ISO-8859-1; format=flowed; DelSp=Yes Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Control: tag -1 patch On Mi 09 Jul 2014 23:57:09 CEST, Gregory R. Warnes wrote: > Hi, my server had a ?weird? file in /tmp/.X11-unix/ for which=20=20 >=20xwininfo would never return, locking up x2golistdesktops. > > The solution is to provide a timeout for the shell call to xwininfo.=20= =20 >=20 This can be accomplished either using the shell command ?timeout?=20= =20 >=20or the Perl IPC::Run module (as described in the first response to=20= =20 >=20http://stackoverflow.com/questions/16918005/time-out-when-using-system-= cmd-in-perl). > > For my purpose, I?ve used the shell timeout command. Patch below. > > -Greg > > > --- /usr/bin/x2golistdesktops 2014-04-03 10:14:22.000000000 -0500 > +++ x2golistdesktops 2014-07-09 16:43:54.000000000 -0500 > @@ -43,7 +43,7 @@ > $serv=3Dhostname; > } > > -my $rsess=3D`x2golistsessions x2goserver |grep _stR`; > +my $rsess=3D`timeout 1s x2golistsessions x2goserver |grep _stR`; > my @rsess=3Dsplit("\n","$rsess"); > my @rdisplays; > for (my $i=3D0;$i<@rsess;$i++) > @@ -67,7 +67,7 @@ > $checkdisp=3D"${checkdisp}I"; > if (!( $rdisp =3D~ m/$checkdisp/ )) > { > - my $inf=3D`xwininfo -root -display $display 2> /dev/null`; > + my $inf=3D`timeout 1s xwininfo -root -display $display 2> /dev/null`; > if ( $inf=3D~ m/geometry/) > { > print "$uname\@$display\n"; > @@ -88,4 +88,4 @@ > } > > # closing syslog > -closelog; > \ No newline at end of file > +closelog; > w The glorious question here is, actually: Why does xwininfo hang in the=20= =20 first=20place? Mike --=20 DAS-NETZWERKTEAM mike=20gabriel, herweg 7, 24357 fleckeby fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x= fb --=_q5A1jhLufgFzl0vMfue6Rw1 Content-Type: application/pgp-signature Content-Description: Digitale PGP-Signatur Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJTvyAlAAoJEJr0azAldxsxIWIQALCqCSvBaxZ+nP5S5QK/SxZ3 lhOBkptVxqu/YJJg1qtMmvOiHK5hQYmQHqJi/ZPpJOCx5m7qB6HvXUsT/uhRpTEi Wty+uIejGisUDsQK19rOUwC5Jf1UbSPpGgD/6Xbvodgy55mWuEEBRAmGP/ryQjBq HMk2yYgehnz3Zt/llSMn8rlxJYZ9vdNSNYc4lsI1eRSqu/N3BDulmYn9LeF33jzU pRZ3qC3lLfEyJvyGQA3KxrCIigsBAiYHDBVb+G/v7SSCN7IyKaFlIuwfGfNKgrgr CIEjjV2+TfqyHTQWaW4qJjdZz1wnHT5yblpJGFteD4fFqjAwyCDw/kLky1fQtCVU kBuIp9aCbEwbuAAhrsfWS0Ek8/U9mAUSeyS+HOG23qNTepXR6oJpmSnWKCfMol3E sH4vS2clMUFLtefo3e2I6qxte1kHHyR0yZtH9xIW6WK2ixCN0IsQFE7TAoN+oNgw b9B/uxpy0hI7cKVtY6J5bQYuKCuWuDTnRCbqF3t2UEYs1ut2lkcyP+ALxjPt+7xn 1kY2xiVRvimzNxrljqyjUqAuma5IFsjfMkSs+KvSZnfI71/KPGmGOrAI75DPheUK bo13nHCwj3TT/9GD1/9N+7BQDvfIgSCEeeESGalj6cEtb0rnwIdMpfPZCikclp0N Dv50wkBU0LxCXP1qDFWy =QMQ4 -----END PGP SIGNATURE----- --=_q5A1jhLufgFzl0vMfue6Rw1--