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Re: [PATCH] qdev-properties: alias all object class properties
From: |
Stefan Hajnoczi |
Subject: |
Re: [PATCH] qdev-properties: alias all object class properties |
Date: |
Thu, 14 Sep 2023 08:44:38 -0400 |
Paolo: ping?
On Thu, 3 Aug 2023 at 15:51, Stefan Hajnoczi <stefanha@redhat.com> wrote:
>
> qdev_alias_all_properties() aliases a DeviceState's qdev properties onto
> an Object. This is used for VirtioPCIProxy types so that --device
> virtio-blk-pci has properties of its embedded --device virtio-blk-device
> object.
>
> Currently this function is implemented using qdev properties. Change the
> function to use QOM object class properties instead. This works because
> qdev properties create QOM object class properties, but it also catches
> any QOM object class-only properties that have no qdev properties.
>
> This change ensures that properties of devices are shown with --device
> foo,\? even if they are QOM object class properties.
>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
> hw/core/qdev-properties.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
> index 357b8761b5..fbf3969d3c 100644
> --- a/hw/core/qdev-properties.c
> +++ b/hw/core/qdev-properties.c
> @@ -959,16 +959,18 @@ void device_class_set_props(DeviceClass *dc, Property
> *props)
> void qdev_alias_all_properties(DeviceState *target, Object *source)
> {
> ObjectClass *class;
> - Property *prop;
> + ObjectPropertyIterator iter;
> + ObjectProperty *prop;
>
> class = object_get_class(OBJECT(target));
> - do {
> - DeviceClass *dc = DEVICE_CLASS(class);
>
> - for (prop = dc->props_; prop && prop->name; prop++) {
> - object_property_add_alias(source, prop->name,
> - OBJECT(target), prop->name);
> + object_class_property_iter_init(&iter, class);
> + while ((prop = object_property_iter_next(&iter))) {
> + if (object_property_find(source, prop->name)) {
> + continue; /* skip duplicate properties */
> }
> - class = object_class_get_parent(class);
> - } while (class != object_class_by_name(TYPE_DEVICE));
> +
> + object_property_add_alias(source, prop->name,
> + OBJECT(target), prop->name);
> + }
> }
> --
> 2.41.0
>
>
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