libvirt/src/conf/storage_event.c
Cole Robinson af36f8a641 Require a semicolon for VIR_ONCE_GLOBAL_INIT calls
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>). VIR_ONCE_GLOBAL_INIT is almost
exclusively called without an ending semicolon, but let's
standardize on using one like the other macros.

Add a dummy struct definition at the end of the macro, so
the compiler will require callers to add a semicolon.

Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
2019-02-03 17:46:29 -05:00

298 lines
9.7 KiB
C

/*
* storage_event.c: storage event queue processing helpers
*
* Copyright (C) 2010-2014 Red Hat, Inc.
* Copyright (C) 2008 VirtualIron
* Copyright (C) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "storage_event.h"
#include "object_event.h"
#include "object_event_private.h"
#include "datatypes.h"
#include "virlog.h"
VIR_LOG_INIT("conf.storage_event");
struct _virStoragePoolEvent {
virObjectEvent parent;
/* Unused attribute to allow for subclass creation */
bool dummy;
};
typedef struct _virStoragePoolEvent virStoragePoolEvent;
typedef virStoragePoolEvent *virStoragePoolEventPtr;
struct _virStoragePoolEventLifecycle {
virStoragePoolEvent parent;
int type;
int detail;
};
typedef struct _virStoragePoolEventLifecycle virStoragePoolEventLifecycle;
typedef virStoragePoolEventLifecycle *virStoragePoolEventLifecyclePtr;
struct _virStoragePoolEventRefresh {
virStoragePoolEvent parent;
bool dummy;
};
typedef struct _virStoragePoolEventRefresh virStoragePoolEventRefresh;
typedef virStoragePoolEventRefresh *virStoragePoolEventRefreshPtr;
static virClassPtr virStoragePoolEventClass;
static virClassPtr virStoragePoolEventLifecycleClass;
static virClassPtr virStoragePoolEventRefreshClass;
static void virStoragePoolEventDispose(void *obj);
static void virStoragePoolEventLifecycleDispose(void *obj);
static void virStoragePoolEventRefreshDispose(void *obj);
static int
virStoragePoolEventsOnceInit(void)
{
if (!VIR_CLASS_NEW(virStoragePoolEvent, virClassForObjectEvent()))
return -1;
if (!VIR_CLASS_NEW(virStoragePoolEventLifecycle, virStoragePoolEventClass))
return -1;
if (!VIR_CLASS_NEW(virStoragePoolEventRefresh, virStoragePoolEventClass))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virStoragePoolEvents);
static void
virStoragePoolEventDispose(void *obj)
{
virStoragePoolEventPtr event = obj;
VIR_DEBUG("obj=%p", event);
}
static void
virStoragePoolEventLifecycleDispose(void *obj)
{
virStoragePoolEventLifecyclePtr event = obj;
VIR_DEBUG("obj=%p", event);
}
static void
virStoragePoolEventRefreshDispose(void *obj)
{
virStoragePoolEventRefreshPtr event = obj;
VIR_DEBUG("obj=%p", event);
}
static void
virStoragePoolEventDispatchDefaultFunc(virConnectPtr conn,
virObjectEventPtr event,
virConnectObjectEventGenericCallback cb,
void *cbopaque)
{
virStoragePoolPtr pool = virGetStoragePool(conn,
event->meta.name,
event->meta.uuid,
NULL, NULL);
if (!pool)
return;
switch ((virStoragePoolEventID)event->eventID) {
case VIR_STORAGE_POOL_EVENT_ID_LIFECYCLE:
{
virStoragePoolEventLifecyclePtr storagePoolLifecycleEvent;
storagePoolLifecycleEvent = (virStoragePoolEventLifecyclePtr)event;
((virConnectStoragePoolEventLifecycleCallback)cb)(conn, pool,
storagePoolLifecycleEvent->type,
storagePoolLifecycleEvent->detail,
cbopaque);
goto cleanup;
}
case VIR_STORAGE_POOL_EVENT_ID_REFRESH:
{
((virConnectStoragePoolEventGenericCallback)cb)(conn, pool,
cbopaque);
goto cleanup;
}
case VIR_STORAGE_POOL_EVENT_ID_LAST:
break;
}
VIR_WARN("Unexpected event ID %d", event->eventID);
cleanup:
virObjectUnref(pool);
}
/**
* virStoragePoolEventStateRegisterID:
* @conn: connection to associate with callback
* @state: object event state
* @pool: storage pool to filter on or NULL for all storage pools
* @eventID: ID of the event type to register for
* @cb: function to invoke when event occurs
* @opaque: data blob to pass to @callback
* @freecb: callback to free @opaque
* @callbackID: filled with callback ID
*
* Register the function @cb with connection @conn, from @state, for
* events of type @eventID, and return the registration handle in
* @callbackID.
*
* Returns: the number of callbacks now registered, or -1 on error
*/
int
virStoragePoolEventStateRegisterID(virConnectPtr conn,
virObjectEventStatePtr state,
virStoragePoolPtr pool,
int eventID,
virConnectStoragePoolEventGenericCallback cb,
void *opaque,
virFreeCallback freecb,
int *callbackID)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
if (virStoragePoolEventsInitialize() < 0)
return -1;
if (pool)
virUUIDFormat(pool->uuid, uuidstr);
return virObjectEventStateRegisterID(conn, state, pool ? uuidstr : NULL,
NULL, NULL,
virStoragePoolEventClass, eventID,
VIR_OBJECT_EVENT_CALLBACK(cb),
opaque, freecb,
false, callbackID, false);
}
/**
* virStoragePoolEventStateRegisterClient:
* @conn: connection to associate with callback
* @state: object event state
* @pool: storage pool to filter on or NULL for all storage pools
* @eventID: ID of the event type to register for
* @cb: function to invoke when event occurs
* @opaque: data blob to pass to @callback
* @freecb: callback to free @opaque
* @callbackID: filled with callback ID
*
* Register the function @cb with connection @conn, from @state, for
* events of type @eventID, and return the registration handle in
* @callbackID. This version is intended for use on the client side
* of RPC.
*
* Returns: the number of callbacks now registered, or -1 on error
*/
int
virStoragePoolEventStateRegisterClient(virConnectPtr conn,
virObjectEventStatePtr state,
virStoragePoolPtr pool,
int eventID,
virConnectStoragePoolEventGenericCallback cb,
void *opaque,
virFreeCallback freecb,
int *callbackID)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
if (virStoragePoolEventsInitialize() < 0)
return -1;
if (pool)
virUUIDFormat(pool->uuid, uuidstr);
return virObjectEventStateRegisterID(conn, state, pool ? uuidstr : NULL,
NULL, NULL,
virStoragePoolEventClass, eventID,
VIR_OBJECT_EVENT_CALLBACK(cb),
opaque, freecb,
false, callbackID, true);
}
/**
* virStoragePoolEventLifecycleNew:
* @name: name of the storage pool object the event describes
* @uuid: uuid of the storage pool object the event describes
* @type: type of lifecycle event
* @detail: more details about @type
*
* Create a new storage pool lifecycle event.
*/
virObjectEventPtr
virStoragePoolEventLifecycleNew(const char *name,
const unsigned char *uuid,
int type,
int detail)
{
virStoragePoolEventLifecyclePtr event;
char uuidstr[VIR_UUID_STRING_BUFLEN];
if (virStoragePoolEventsInitialize() < 0)
return NULL;
virUUIDFormat(uuid, uuidstr);
if (!(event = virObjectEventNew(virStoragePoolEventLifecycleClass,
virStoragePoolEventDispatchDefaultFunc,
VIR_STORAGE_POOL_EVENT_ID_LIFECYCLE,
0, name, uuid, uuidstr)))
return NULL;
event->type = type;
event->detail = detail;
return (virObjectEventPtr)event;
}
/**
* virStoragePoolEventRefreshNew:
* @name: name of the storage pool object the event describes
* @uuid: uuid of the storage pool object the event describes
*
* Create a new storage pool refresh event.
*/
virObjectEventPtr
virStoragePoolEventRefreshNew(const char *name,
const unsigned char *uuid)
{
virStoragePoolEventRefreshPtr event;
char uuidstr[VIR_UUID_STRING_BUFLEN];
if (virStoragePoolEventsInitialize() < 0)
return NULL;
virUUIDFormat(uuid, uuidstr);
if (!(event = virObjectEventNew(virStoragePoolEventRefreshClass,
virStoragePoolEventDispatchDefaultFunc,
VIR_STORAGE_POOL_EVENT_ID_REFRESH,
0, name, uuid, uuidstr)))
return NULL;
return (virObjectEventPtr)event;
}