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vmgenid: use UUID property type 

Switch vmgenid device to use the UUID property type introduced in the
previous patch for its 'guid' property.

One semantic change it introduces is that post-realize modification of
'guid' via HMP or QMP will now be rejected with an error; however,
according to docs/specs/vmgenid.txt this is actually desirable.

Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Ben Warren <ben@skyportsystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Roman Kagan 2017-11-27 16:05:18 +03:00 committed by Michael S. Tsirkin
parent 87e6ed5670
commit 939dd2d350
1 changed files with 8 additions and 22 deletions
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30
hw/acpi/vmgenid.c
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@ -162,21 +162,6 @@ static void vmgenid_update_guest(VmGenIdState *vms)
}
}
static void vmgenid_set_guid(Object *obj, const char *value, Error **errp)
{
VmGenIdState *vms = VMGENID(obj);
if (!strcmp(value, "auto")) {
qemu_uuid_generate(&vms->guid);
} else if (qemu_uuid_parse(value, &vms->guid) < 0) {
error_setg(errp, "'%s. %s': Failed to parse GUID string: %s",
object_get_typename(OBJECT(vms)), VMGENID_GUID, value);
return;
}
vmgenid_update_guest(vms);
}
/* After restoring an image, we need to update the guest memory and notify
* it of a potential change to VM Generation ID
*/
@ -224,23 +209,24 @@ static void vmgenid_realize(DeviceState *dev, Error **errp)
}
qemu_register_reset(vmgenid_handle_reset, vms);
vmgenid_update_guest(vms);
}
static Property vmgenid_device_properties[] = {
DEFINE_PROP_UUID(VMGENID_GUID, VmGenIdState, guid),
DEFINE_PROP_END_OF_LIST(),
};
static void vmgenid_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &vmstate_vmgenid;
dc->realize = vmgenid_realize;
dc->props = vmgenid_device_properties;
dc->hotpluggable = false;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
object_class_property_add_str(klass, VMGENID_GUID, NULL,
vmgenid_set_guid, NULL);
object_class_property_set_description(klass, VMGENID_GUID,
"Set Global Unique Identifier "
"(big-endian) or auto for random value",
NULL);
}
static const TypeInfo vmgenid_device_info = {