mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-27 13:30:52 +00:00
265b578c58
A link property can be set during creation, with object_property_add_link() and later with object_property_set_link(). add_link() doesn't add a reference to the target object, while set_link() does. Furthemore, OBJ_PROP_LINK_UNREF_ON_RELEASE flags, set during add_link, says whether a reference must be released when the property is destroyed. This can lead to leaks if the property was later set_link(), as the added reference is never released. Instead, rename OBJ_PROP_LINK_UNREF_ON_RELEASE to OBJ_PROP_LINK_STRONG and use that has an indication on how the link handle reference management in set_link(). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20180531195119.22021-3-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/*
|
|
* CAN generic CAN host connection support
|
|
*
|
|
* Copyright (c) 2013-2014 Jin Yang
|
|
* Copyright (c) 2014-2018 Pavel Pisa
|
|
*
|
|
* Initial development supported by Google GSoC 2013 from RTEMS project slot
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#include "qemu/osdep.h"
|
|
#include "chardev/char.h"
|
|
#include "qemu/sockets.h"
|
|
#include "qapi/error.h"
|
|
#include "qom/object_interfaces.h"
|
|
#include "net/can_emu.h"
|
|
#include "net/can_host.h"
|
|
|
|
struct CanBusState {
|
|
Object object;
|
|
|
|
QTAILQ_HEAD(, CanBusClientState) clients;
|
|
};
|
|
|
|
static void can_host_disconnect(CanHostState *ch)
|
|
{
|
|
CanHostClass *chc = CAN_HOST_GET_CLASS(ch);
|
|
|
|
can_bus_remove_client(&ch->bus_client);
|
|
chc->disconnect(ch);
|
|
}
|
|
|
|
static void can_host_connect(CanHostState *ch, Error **errp)
|
|
{
|
|
CanHostClass *chc = CAN_HOST_GET_CLASS(ch);
|
|
Error *local_err = NULL;
|
|
|
|
chc->connect(ch, &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
return;
|
|
}
|
|
|
|
can_bus_insert_client(ch->bus, &ch->bus_client);
|
|
}
|
|
|
|
static void can_host_unparent(Object *obj)
|
|
{
|
|
can_host_disconnect(CAN_HOST(obj));
|
|
}
|
|
|
|
static void can_host_complete(UserCreatable *uc, Error **errp)
|
|
{
|
|
can_host_connect(CAN_HOST(uc), errp);
|
|
}
|
|
|
|
static void can_host_instance_init(Object *obj)
|
|
{
|
|
CanHostState *ch = CAN_HOST(obj);
|
|
|
|
object_property_add_link(obj, "canbus", TYPE_CAN_BUS,
|
|
(Object **)&ch->bus,
|
|
object_property_allow_set_link,
|
|
OBJ_PROP_LINK_STRONG,
|
|
&error_abort);
|
|
}
|
|
|
|
static void can_host_class_init(ObjectClass *klass,
|
|
void *class_data G_GNUC_UNUSED)
|
|
{
|
|
UserCreatableClass *uc_klass = USER_CREATABLE_CLASS(klass);
|
|
|
|
klass->unparent = can_host_unparent;
|
|
uc_klass->complete = can_host_complete;
|
|
}
|
|
|
|
static const TypeInfo can_host_info = {
|
|
.parent = TYPE_OBJECT,
|
|
.name = TYPE_CAN_HOST,
|
|
.instance_size = sizeof(CanHostState),
|
|
.class_size = sizeof(CanHostClass),
|
|
.abstract = true,
|
|
.instance_init = can_host_instance_init,
|
|
.class_init = can_host_class_init,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ TYPE_USER_CREATABLE },
|
|
{ }
|
|
}
|
|
};
|
|
|
|
static void can_host_register_types(void)
|
|
{
|
|
type_register_static(&can_host_info);
|
|
}
|
|
|
|
type_init(can_host_register_types);
|