From nobody Sun Feb 8 14:52:55 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1497608072196987.6152091293466; Fri, 16 Jun 2017 03:14:32 -0700 (PDT) Received: from localhost ([::1]:57925 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dLoGt-00078O-0w for importer@patchew.org; Fri, 16 Jun 2017 06:14:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33910) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dLoFP-0005sb-Dt for qemu-devel@nongnu.org; Fri, 16 Jun 2017 06:13:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dLoFO-0002jQ-Ch for qemu-devel@nongnu.org; Fri, 16 Jun 2017 06:12:59 -0400 Received: from mx1.redhat.com ([209.132.183.28]:23868) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dLoFO-0002h6-5u for qemu-devel@nongnu.org; Fri, 16 Jun 2017 06:12:58 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 38C3680477; Fri, 16 Jun 2017 10:12:57 +0000 (UTC) Received: from t460.redhat.com (ovpn-116-150.ams2.redhat.com [10.36.116.150]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0F81B863C0; Fri, 16 Jun 2017 10:12:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 38C3680477 Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=berrange@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 38C3680477 From: "Daniel P. Berrange" To: qemu-devel@nongnu.org Date: Fri, 16 Jun 2017 11:12:43 +0100 Message-Id: <20170616101246.1550-3-berrange@redhat.com> In-Reply-To: <20170616101246.1550-1-berrange@redhat.com> References: <20170616101246.1550-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Fri, 16 Jun 2017 10:12:57 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v4 2/5] sockets: don't block IPv4 clients when listening on "::" X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gerd Hoffmann , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" When inet_parse() parses the hostname, it is forcing the has_ipv6 && ipv6 flags if the address contains a ":". This means that if the user had set the ipv4=3Don flag, to try to restrict the listener to just ipv4, an error would not have been raised. eg -incoming tcp:[::]:9000,ipv4 should have raised an error because listening for IPv4 on "::" is a non-sensical combination. With this removed, we now call getaddrinfo() on "::" passing PF_INET and so getaddrinfo reports an error about the hostname being incompatible with the requested protocol: qemu-system-x86_64: -incoming tcp:[::]:9000,ipv4: address resolution failed for :::9000: Address family for hostname not supported Likewise it is explicitly setting the has_ipv4 & ipv4 flags when the address contains only digits + '.'. This has no ill-effect, but also has no benefit, so is removed. Acked-by: Gerd Hoffmann Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Eric Blake Signed-off-by: Daniel P. Berrange --- util/qemu-sockets.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index f00cc5b..e69430b 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -618,16 +618,12 @@ int inet_parse(InetSocketAddress *addr, const char *s= tr, Error **errp) error_setg(errp, "error parsing IPv6 address '%s'", str); return -1; } - addr->ipv6 =3D addr->has_ipv6 =3D true; } else { /* hostname or IPv4 addr */ if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) !=3D 2) { error_setg(errp, "error parsing address '%s'", str); return -1; } - if (host[strspn(host, "0123456789.")] =3D=3D '\0') { - addr->ipv4 =3D addr->has_ipv4 =3D true; - } } =20 addr->host =3D g_strdup(host); --=20 2.9.3