From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59958) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0tNE-0003zF-2f for qemu-devel@nongnu.org; Fri, 05 Jun 2015 11:17:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z0tND-0000J8-3f for qemu-devel@nongnu.org; Fri, 05 Jun 2015 11:17:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55616) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0tNC-0000J4-VX for qemu-devel@nongnu.org; Fri, 05 Jun 2015 11:17:31 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (Postfix) with ESMTPS id ABF79C2FE2 for ; Fri, 5 Jun 2015 15:17:30 +0000 (UTC) Received: from donizetti.redhat.com (ovpn-112-29.ams2.redhat.com [10.36.112.29]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t55FG4l0012808 for ; Fri, 5 Jun 2015 11:17:29 -0400 From: Paolo Bonzini Date: Fri, 5 Jun 2015 17:15:49 +0200 Message-Id: <1433517363-32335-49-git-send-email-pbonzini@redhat.com> In-Reply-To: <1433517363-32335-1-git-send-email-pbonzini@redhat.com> References: <1433517363-32335-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PULL 48/62] qom: add object_property_add_const_link List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Suggested-by: Eduardo Habkost Signed-off-by: Paolo Bonzini --- include/qom/object.h | 18 ++++++++++++++++++ qom/object.c | 16 ++++++++++++++++ 2 files changed, 34 insertions(+) diff --git a/include/qom/object.h b/include/qom/object.h index d2d7748..0505f20 100644 --- a/include/qom/object.h +++ b/include/qom/object.h @@ -1290,6 +1290,24 @@ void object_property_add_alias(Object *obj, const char *name, Error **errp); /** + * object_property_add_const_link: + * @obj: the object to add a property to + * @name: the name of the property + * @target: the object to be referred by the link + * @errp: if an error occurs, a pointer to an area to store the error + * + * Add an unmodifiable link for a property on an object. This function will + * add a property of type link where TYPE is the type of @target. + * + * The caller must ensure that @target stays alive as long as + * this property exists. In the case @target is a child of @obj, + * this will be the case. Otherwise, the caller is responsible for + * taking a reference. + */ +void object_property_add_const_link(Object *obj, const char *name, + Object *target, Error **errp); + +/** * object_property_set_description: * @obj: the object owning the property * @name: the name of the property diff --git a/qom/object.c b/qom/object.c index b8dff43..96abd34 100644 --- a/qom/object.c +++ b/qom/object.c @@ -1266,6 +1266,22 @@ out: g_free(full_type); } +void object_property_add_const_link(Object *obj, const char *name, + Object *target, Error **errp) +{ + char *link_type; + ObjectProperty *op; + + link_type = g_strdup_printf("link<%s>", object_get_typename(target)); + op = object_property_add(obj, name, link_type, + object_get_child_property, NULL, + NULL, target, errp); + if (op != NULL) { + op->resolve = object_resolve_child_property; + } + g_free(link_type); +} + gchar *object_get_canonical_path_component(Object *obj) { ObjectProperty *prop = NULL; -- 2.4.1