From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.90_1) id 1j03Kq-0000HJ-9B for mharc-qemu-riscv@gnu.org; Fri, 07 Feb 2020 08:06:17 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:54196) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j03Kn-0000El-8g for qemu-riscv@nongnu.org; Fri, 07 Feb 2020 08:06:14 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j03Km-0007yk-5M for qemu-riscv@nongnu.org; Fri, 07 Feb 2020 08:06:13 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:44868 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j03Km-0007yO-1s for qemu-riscv@nongnu.org; Fri, 07 Feb 2020 08:06:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581080771; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=G95PTwCCtptgBScLxDFzyGKSIIGgkKDhimn6aS+h6BE=; b=APWoxhON+Ldd+AxFkT73/PEufnK/1IzT+CZgD4oE5+euAMIWDIO7AM5BERGixkHFVjKgxM Tw2lhUp7iynRsQu8GXwivxq2KiOzm8tbX+gNdIMaF9DDwwQJSzrb/tVqzm9c05cMH2ARbl S/EU149LzO34DgrOzOb4Jwi/sQWf4FA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-229-0GYQxoM5N3mjwWsInLhiGg-1; Fri, 07 Feb 2020 08:06:08 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 62BF51081FA2; Fri, 7 Feb 2020 13:06:04 +0000 (UTC) Received: from x1w.redhat.com (ovpn-204-120.brq.redhat.com [10.40.204.120]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6938E5C28C; Fri, 7 Feb 2020 13:05:50 +0000 (UTC) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Alistair Francis , Aurelien Jarno , qemu-trivial@nongnu.org, Richard Henderson , Anthony Green , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Christian Borntraeger , Guan Xuetao , Mark Cave-Ayland , Richard Henderson , Aleksandar Markovic , Aleksandar Rikalo , Stafford Horne , David Gibson , Sagar Karandikar , Michael Walle , Marcel Apfelbaum , Chris Wulff , qemu-s390x@nongnu.org, Cornelia Huck , David Hildenbrand , Halil Pasic , "Michael S. Tsirkin" , Helge Deller , Artyom Tarasenko , Bastian Koppelmann , qemu-ppc@nongnu.org, qemu-riscv@nongnu.org, Marek Vasut , Jia Liu , "Edgar E. Iglesias" , Eduardo Habkost , Paolo Bonzini , Laurent Vivier , Palmer Dabbelt , Thomas Huth , Magnus Damm , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Subject: [PATCH v3 3/3] vl: Abort if multiple machines are registered as default Date: Fri, 7 Feb 2020 14:04:53 +0100 Message-Id: <20200207130453.16666-4-philmd@redhat.com> In-Reply-To: <20200207130453.16666-1-philmd@redhat.com> References: <20200207130453.16666-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: 0GYQxoM5N3mjwWsInLhiGg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 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: 207.211.31.81 X-BeenThere: qemu-riscv@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Feb 2020 13:06:14 -0000 It would be confusing to have multiple default machines. Abort if this ever occurs. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- v2: Use assert() instead of human friendly message (Marc-Andr=C3=A9) Cc: Marc-Andr=C3=A9 Lureau Cc: Laurent Vivier --- vl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/vl.c b/vl.c index 7dcb0879c4..b3e0f7af25 100644 --- a/vl.c +++ b/vl.c @@ -2354,6 +2354,8 @@ static MachineClass *machine_parse(const char *name, = GSList *machines) GSList *el; =20 if (is_help_option(name)) { + int default_count =3D 0; + printf("Supported machines are:\n"); machines =3D g_slist_sort(machines, machine_class_cmp); for (el =3D machines; el; el =3D el->next) { @@ -2364,7 +2366,9 @@ static MachineClass *machine_parse(const char *name, = GSList *machines) printf("%-20s %s%s%s\n", mc->name, mc->desc, mc->is_default ? " (default)" : "", mc->deprecation_reason ? " (deprecated)" : ""); + default_count +=3D !!mc->is_default; } + assert(default_count <=3D 1); exit(0); } =20 --=20 2.21.1