From patchwork Wed Apr 15 07:49:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 1270953 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=g3WL7atl; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 492F2H2tdFz9sSc for ; Wed, 15 Apr 2020 17:52:39 +1000 (AEST) Received: from localhost ([::1]:45472 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jOcqb-0003fK-AV for incoming@patchwork.ozlabs.org; Wed, 15 Apr 2020 03:52:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51156) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jOcnd-0006LH-Rl for qemu-devel@nongnu.org; Wed, 15 Apr 2020 03:49:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jOcnc-0007JG-H3 for qemu-devel@nongnu.org; Wed, 15 Apr 2020 03:49:33 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:39095 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 1jOcnc-0007Id-DO for qemu-devel@nongnu.org; Wed, 15 Apr 2020 03:49:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1586936972; 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=rAIXpbbqraHJ0iUakgmH+v8sgKkK5mv5KVv3fwySK0s=; b=g3WL7atlsMXB1Bb16v60HrIoFlcM3xHxdZeOaIRM0BBx6AEHwgMwrgJ7KnGoUhLqCxTVWy XbaH0BjYXDwrWILD/FSoVOGEvmZE06wID8s+j9JIV+FUVqvOzh4R41Y1mZoZbvLR7Vt9Yu BRUSg6oKxFdqKf8IupTs+SF8ZTElgig= 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-317-b77vZgXkMw-cX7Jd00BFhw-1; Wed, 15 Apr 2020 03:49:30 -0400 X-MC-Unique: b77vZgXkMw-cX7Jd00BFhw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 281CE10CE78C; Wed, 15 Apr 2020 07:49:29 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-113-20.ams2.redhat.com [10.36.113.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F0D7519C70; Wed, 15 Apr 2020 07:49:28 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id B48AA11358AF; Wed, 15 Apr 2020 09:49:27 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH v2 for-5.1 2/9] qemu-options: Factor out get_opt_name_value() helper Date: Wed, 15 Apr 2020 09:49:20 +0200 Message-Id: <20200415074927.19897-3-armbru@redhat.com> In-Reply-To: <20200415074927.19897-1-armbru@redhat.com> References: <20200415074927.19897-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-block@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The next commits will put it to use. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Reviewed-by: Kevin Wolf --- util/qemu-option.c | 102 +++++++++++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 46 deletions(-) diff --git a/util/qemu-option.c b/util/qemu-option.c index 97172b5eaa..f08f4bc458 100644 --- a/util/qemu-option.c +++ b/util/qemu-option.c @@ -805,61 +805,71 @@ void qemu_opts_print(QemuOpts *opts, const char *separator) } } +static const char *get_opt_name_value(const char *params, + const char *firstname, + char **name, char **value) +{ + const char *p, *pe, *pc; + + pe = strchr(params, '='); + pc = strchr(params, ','); + + if (!pe || (pc && pc < pe)) { + /* found "foo,more" */ + if (firstname) { + /* implicitly named first option */ + *name = g_strdup(firstname); + p = get_opt_value(params, value); + } else { + /* option without value, must be a flag */ + p = get_opt_name(params, name, ','); + if (strncmp(*name, "no", 2) == 0) { + memmove(*name, *name + 2, strlen(*name + 2) + 1); + *value = g_strdup("off"); + } else { + *value = g_strdup("on"); + } + } + } else { + /* found "foo=bar,more" */ + p = get_opt_name(params, name, '='); + assert(*p == '='); + p++; + p = get_opt_value(p, value); + } + + assert(!*p || *p == ','); + if (*p == ',') { + p++; + } + return p; +} + static void opts_do_parse(QemuOpts *opts, const char *params, const char *firstname, bool prepend, bool *invalidp, Error **errp) { - char *option = NULL; - char *value = NULL; - const char *p,*pe,*pc; Error *local_err = NULL; + char *option, *value; + const char *p; - for (p = params; *p != '\0'; p++) { - pe = strchr(p, '='); - pc = strchr(p, ','); - if (!pe || (pc && pc < pe)) { - /* found "foo,more" */ - if (p == params && firstname) { - /* implicitly named first option */ - option = g_strdup(firstname); - p = get_opt_value(p, &value); - } else { - /* option without value, probably a flag */ - p = get_opt_name(p, &option, ','); - if (strncmp(option, "no", 2) == 0) { - memmove(option, option+2, strlen(option+2)+1); - value = g_strdup("off"); - } else { - value = g_strdup("on"); - } - } - } else { - /* found "foo=bar,more" */ - p = get_opt_name(p, &option, '='); - assert(*p == '='); - p++; - p = get_opt_value(p, &value); - } - if (strcmp(option, "id") != 0) { - /* store and parse */ - opt_set(opts, option, value, prepend, invalidp, &local_err); - value = NULL; - if (local_err) { - error_propagate(errp, local_err); - goto cleanup; - } - } - if (*p != ',') { - break; + for (p = params; *p;) { + p = get_opt_name_value(p, firstname, &option, &value); + firstname = NULL; + + if (!strcmp(option, "id")) { + g_free(option); + g_free(value); + continue; } + + opt_set(opts, option, value, prepend, invalidp, &local_err); g_free(option); - g_free(value); - option = value = NULL; + if (local_err) { + error_propagate(errp, local_err); + return; + } } - - cleanup: - g_free(option); - g_free(value); } /**