From patchwork Tue Jul 7 13:42:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 11648609 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DB9CA13B4 for ; Tue, 7 Jul 2020 13:43:26 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id B2F0D20658 for ; Tue, 7 Jul 2020 13:43:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="VwirA2I5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B2F0D20658 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:46422 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jsnsb-0008Lj-SN for patchwork-qemu-devel@patchwork.kernel.org; Tue, 07 Jul 2020 09:43:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50610) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jsnru-0006dQ-Oe for qemu-devel@nongnu.org; Tue, 07 Jul 2020 09:42:42 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:42915 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jsnrs-0004Yq-NB for qemu-devel@nongnu.org; Tue, 07 Jul 2020 09:42:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1594129358; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type:in-reply-to:in-reply-to: references:references; bh=tZpyUC8O0kFmGIJyFMAqx1/t3IDSz35Y6yMJtiML0fQ=; b=VwirA2I5NFWJ6BxzyEa+E3g6LImZq/P8RxF2tN52OfWqKXqivYjzUYHj5pvi1DhJHJ/Mm1 hQhv9hWcQm1oHDtxzD4W3G6ubYa9p79k9sWwvdbbkM4xyuCFpK99n4RSfWEfkvrfSn7Nqy n+ETMsz7YYlp5bn1nbVQ9zeMwt2pA/c= 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-108-pz2XMtwZNGOPFlcikCCYgg-1; Tue, 07 Jul 2020 09:42:37 -0400 X-MC-Unique: pz2XMtwZNGOPFlcikCCYgg-1 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6F6CD18829CC for ; Tue, 7 Jul 2020 13:42:36 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-200.ams2.redhat.com [10.36.112.200]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7F0A75D9F3; Tue, 7 Jul 2020 13:42:30 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id BCD3531F14; Tue, 7 Jul 2020 15:42:29 +0200 (CEST) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PULL 02/10] object: qom module support Date: Tue, 7 Jul 2020 15:42:21 +0200 Message-Id: <20200707134229.9773-3-kraxel@redhat.com> In-Reply-To: <20200707134229.9773-1-kraxel@redhat.com> References: <20200707134229.9773-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.61; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/07 00:31:00 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Gerd Hoffmann , Eduardo Habkost , Paolo Bonzini Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Little helper function to load modules on demand. In most cases adding module loading support for devices and other objects is just s/object_class_by_name/module_object_class_by_name/ in the right spot. Signed-off-by: Gerd Hoffmann Message-id: 20200624131045.14512-3-kraxel@redhat.com --- include/qom/object.h | 12 ++++++++++++ qom/object.c | 14 ++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/include/qom/object.h b/include/qom/object.h index 94a61ccc3fe8..51f188137f1f 100644 --- a/include/qom/object.h +++ b/include/qom/object.h @@ -994,6 +994,18 @@ bool object_class_is_abstract(ObjectClass *klass); */ ObjectClass *object_class_by_name(const char *typename); +/** + * module_object_class_by_name: + * @typename: The QOM typename to obtain the class for. + * + * For objects which might be provided by a module. Behaves like + * object_class_by_name, but additionally tries to load the module + * needed in case the class is not available. + * + * Returns: The class for @typename or %NULL if not found. + */ +ObjectClass *module_object_class_by_name(const char *typename); + void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), const char *implements_type, bool include_abstract, void *opaque); diff --git a/qom/object.c b/qom/object.c index 6ece96bc2bfc..34daaf1280f5 100644 --- a/qom/object.c +++ b/qom/object.c @@ -985,6 +985,20 @@ ObjectClass *object_class_by_name(const char *typename) return type->class; } +ObjectClass *module_object_class_by_name(const char *typename) +{ + ObjectClass *oc; + + oc = object_class_by_name(typename); +#ifdef CONFIG_MODULES + if (!oc) { + module_load_qom_one(typename); + oc = object_class_by_name(typename); + } +#endif + return oc; +} + ObjectClass *object_class_get_parent(ObjectClass *class) { TypeImpl *type = type_get_parent(class->type);