From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:58175) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hCIY9-0003fR-1w for qemu-devel@nongnu.org; Fri, 05 Apr 2019 02:42:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hCIY8-0004YY-6V for qemu-devel@nongnu.org; Fri, 05 Apr 2019 02:42:05 -0400 Received: from mga07.intel.com ([134.134.136.100]:40758) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hCIY7-0004O6-TF for qemu-devel@nongnu.org; Fri, 05 Apr 2019 02:42:04 -0400 From: Wei Yang Date: Fri, 5 Apr 2019 14:41:21 +0800 Message-Id: <20190405064121.23662-5-richardw.yang@linux.intel.com> In-Reply-To: <20190405064121.23662-1-richardw.yang@linux.intel.com> References: <20190405064121.23662-1-richardw.yang@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v2 4/4] vl: Simplify machine_parse() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: ehabkost@redhat.com, marcel.apfelbaum@gmail.com, pbonzini@redhat.com, armbru@redhat.com From: Markus Armbruster Exploit that argument @name is nerver null. Check is_help_option() first, because that's what we do elsewhere. If we (foolishly!) defined a machine named "help", -machine help would now print help instead of selecting the machine named "help". Signed-off-by: Markus Armbruster Reviewed-by: Wei Yang --- vl.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/vl.c b/vl.c index 99f9cb2533..4f4d440bc4 100644 --- a/vl.c +++ b/vl.c @@ -2529,19 +2529,10 @@ static gint machine_class_cmp(gconstpointer a, gconstpointer b) static MachineClass *machine_parse(const char *name, GSList *machines) { - MachineClass *mc = NULL; + MachineClass *mc; GSList *el; - if (name) { - mc = find_machine(name, machines); - } - if (mc) { - return mc; - } - if (name && !is_help_option(name)) { - error_report("unsupported machine type"); - error_printf("Use -machine help to list supported machines\n"); - } else { + if (is_help_option(name)) { printf("Supported machines are:\n"); machines = g_slist_sort(machines, machine_class_cmp); for (el = machines; el; el = el->next) { @@ -2553,9 +2544,16 @@ static MachineClass *machine_parse(const char *name, GSList *machines) mc->is_default ? " (default)" : "", mc->deprecation_reason ? " (deprecated)" : ""); } + exit(0); } - exit(!name || !is_help_option(name)); + mc = find_machine(name, machines); + if (!mc) { + error_report("unsupported machine type"); + error_printf("Use -machine help to list supported machines\n"); + exit(1); + } + return mc; } void qemu_add_exit_notifier(Notifier *notify) -- 2.19.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3442C4360F for ; Fri, 5 Apr 2019 06:46:00 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B6A6A206DF for ; Fri, 5 Apr 2019 06:46:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B6A6A206DF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:37027 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hCIbw-0006Ls-0g for qemu-devel@archiver.kernel.org; Fri, 05 Apr 2019 02:46:00 -0400 Received: from eggs.gnu.org ([209.51.188.92]:58175) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hCIY9-0003fR-1w for qemu-devel@nongnu.org; Fri, 05 Apr 2019 02:42:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hCIY8-0004YY-6V for qemu-devel@nongnu.org; Fri, 05 Apr 2019 02:42:05 -0400 Received: from mga07.intel.com ([134.134.136.100]:40758) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hCIY7-0004O6-TF for qemu-devel@nongnu.org; Fri, 05 Apr 2019 02:42:04 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 04 Apr 2019 23:42:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,310,1549958400"; d="scan'208";a="128814036" Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by orsmga007.jf.intel.com with ESMTP; 04 Apr 2019 23:42:02 -0700 From: Wei Yang To: qemu-devel@nongnu.org Date: Fri, 5 Apr 2019 14:41:21 +0800 Message-Id: <20190405064121.23662-5-richardw.yang@linux.intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190405064121.23662-1-richardw.yang@linux.intel.com> References: <20190405064121.23662-1-richardw.yang@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.100 Subject: [Qemu-devel] [PATCH v2 4/4] vl: Simplify machine_parse() 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: pbonzini@redhat.com, ehabkost@redhat.com, armbru@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="UTF-8" Message-ID: <20190405064121.qVW7PRsZh69enxItyBu0TiIO6_ZZvMMzRtqnxaoEf9M@z> From: Markus Armbruster Exploit that argument @name is nerver null. Check is_help_option() first, because that's what we do elsewhere. If we (foolishly!) defined a machine named "help", -machine help would now print help instead of selecting the machine named "help". Signed-off-by: Markus Armbruster Reviewed-by: Wei Yang --- vl.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/vl.c b/vl.c index 99f9cb2533..4f4d440bc4 100644 --- a/vl.c +++ b/vl.c @@ -2529,19 +2529,10 @@ static gint machine_class_cmp(gconstpointer a, gconstpointer b) static MachineClass *machine_parse(const char *name, GSList *machines) { - MachineClass *mc = NULL; + MachineClass *mc; GSList *el; - if (name) { - mc = find_machine(name, machines); - } - if (mc) { - return mc; - } - if (name && !is_help_option(name)) { - error_report("unsupported machine type"); - error_printf("Use -machine help to list supported machines\n"); - } else { + if (is_help_option(name)) { printf("Supported machines are:\n"); machines = g_slist_sort(machines, machine_class_cmp); for (el = machines; el; el = el->next) { @@ -2553,9 +2544,16 @@ static MachineClass *machine_parse(const char *name, GSList *machines) mc->is_default ? " (default)" : "", mc->deprecation_reason ? " (deprecated)" : ""); } + exit(0); } - exit(!name || !is_help_option(name)); + mc = find_machine(name, machines); + if (!mc) { + error_report("unsupported machine type"); + error_printf("Use -machine help to list supported machines\n"); + exit(1); + } + return mc; } void qemu_add_exit_notifier(Notifier *notify) -- 2.19.1