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qdev: Introduce PropertyInfo.create 

This allows property implementation to provide a specialized property
creation method.

Update conditions guarding property types accordingly.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170714021509.23681-3-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
master
Fam Zheng 2017-07-14 10:14:51 +08:00 committed by Paolo Bonzini
parent 8f5d58ef2c
commit faabdbb792
3 changed files with 21 additions and 13 deletions
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31
hw/core/qdev.c
View File

@ -744,6 +744,10 @@ static void qdev_property_add_legacy(DeviceState *dev, Property *prop,
return;
}
if (prop->info->create) {
return;
}
name = g_strdup_printf("legacy-%s", prop->name);
object_property_add(OBJECT(dev), name, "str",
prop->info->print ? qdev_get_legacy_property : prop->info->get,
@ -770,20 +774,23 @@ void qdev_property_add_static(DeviceState *dev, Property *prop,
Error *local_err = NULL;
Object *obj = OBJECT(dev);
/*
* TODO qdev_prop_ptr does not have getters or setters. It must
* go now that it can be replaced with links. The test should be
* removed along with it: all static properties are read/write.
*/
if (!prop->info->get && !prop->info->set) {
return;
if (prop->info->create) {
prop->info->create(obj, prop, &local_err);
} else {
/*
* TODO qdev_prop_ptr does not have getters or setters. It must
* go now that it can be replaced with links. The test should be
* removed along with it: all static properties are read/write.
*/
if (!prop->info->get && !prop->info->set) {
return;
}
object_property_add(obj, prop->name, prop->info->name,
prop->info->get, prop->info->set,
prop->info->release,
prop, &local_err);
}
object_property_add(obj, prop->name, prop->info->name,
prop->info->get, prop->info->set,
prop->info->release,
prop, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;

1
include/hw/qdev-core.h
View File

@ -241,6 +241,7 @@ struct PropertyInfo {
const char * const *enum_table;
int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
void (*set_default_value)(Object *obj, const Property *prop);
void (*create)(Object *obj, Property *prop, Error **errp);
ObjectPropertyAccessor *get;
ObjectPropertyAccessor *set;
ObjectPropertyRelease *release;

2
qmp.c
View File

@ -480,7 +480,7 @@ static DevicePropertyInfo *make_device_property_info(ObjectClass *klass,
* for removal. This conditional should be removed along with
* it.
*/
if (!prop->info->set) {
if (!prop->info->set && !prop->info->create) {
return NULL; /* no way to set it, don't show */
}