[libvirt] [PATCH v2 2/8] conf: add node_device_event handling

Add node device event handling infrastructure to node_device_event.[ch] --- src/Makefile.am | 5 + src/conf/node_device_event.c | 234 +++++++++++++++++++++++++++++++++++++++++++ src/conf/node_device_event.h | 59 +++++++++++ src/libvirt_private.syms | 5 + 4 files changed, 303 insertions(+) create mode 100644 src/conf/node_device_event.c create mode 100644 src/conf/node_device_event.h diff --git a/src/Makefile.am b/src/Makefile.am index 78c493c..e2a2128 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -348,6 +348,9 @@ NETWORK_EVENT_SOURCES = \ STORAGE_EVENT_SOURCES = \ conf/storage_event.c conf/storage_event.h +NODE_DEVICE_EVENT_SOURCES = \ + conf/node_device_event.c conf/node_device_event.h + # Network driver generic impl APIs NETWORK_CONF_SOURCES = \ conf/network_conf.c conf/network_conf.h \ @@ -399,6 +402,7 @@ CONF_SOURCES = \ $(DOMAIN_EVENT_SOURCES) \ $(NETWORK_EVENT_SOURCES) \ $(STORAGE_EVENT_SOURCES) \ + $(NODE_DEVICE_EVENT_SOURCES) \ $(NETWORK_CONF_SOURCES) \ $(NWFILTER_CONF_SOURCES) \ $(NODE_DEVICE_CONF_SOURCES) \ @@ -2369,6 +2373,7 @@ libvirt_setuid_rpc_client_la_SOURCES = \ conf/network_event.c \ conf/object_event.c \ conf/storage_event.c \ + conf/node_device_event.c \ rpc/virnetsocket.c \ rpc/virnetsocket.h \ rpc/virnetmessage.h \ diff --git a/src/conf/node_device_event.c b/src/conf/node_device_event.c new file mode 100644 index 0000000..61bc912 --- /dev/null +++ b/src/conf/node_device_event.c @@ -0,0 +1,234 @@ +/* + * node_device_event.c: node device 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 "node_device_event.h" +#include "object_event.h" +#include "object_event_private.h" +#include "datatypes.h" +#include "virlog.h" + +VIR_LOG_INIT("conf.node_device_event"); + +struct _virNodeDeviceEvent { + virObjectEvent parent; + + /* Unused attribute to allow for subclass creation */ + bool dummy; +}; +typedef struct _virNodeDeviceEvent virNodeDeviceEvent; +typedef virNodeDeviceEvent *virNodeDeviceEventPtr; + +struct _virNodeDeviceEventLifecycle { + virNodeDeviceEvent parent; + + int type; + int detail; +}; +typedef struct _virNodeDeviceEventLifecycle virNodeDeviceEventLifecycle; +typedef virNodeDeviceEventLifecycle *virNodeDeviceEventLifecyclePtr; + +static virClassPtr virNodeDeviceEventClass; +static virClassPtr virNodeDeviceEventLifecycleClass; +static void virNodeDeviceEventDispose(void *obj); +static void virNodeDeviceEventLifecycleDispose(void *obj); + +static int +virNodeDeviceEventsOnceInit(void) +{ + if (!(virNodeDeviceEventClass = + virClassNew(virClassForObjectEvent(), + "virNodeDeviceEvent", + sizeof(virNodeDeviceEvent), + virNodeDeviceEventDispose))) + return -1; + if (!(virNodeDeviceEventLifecycleClass = + virClassNew(virNodeDeviceEventClass, + "virNodeDeviceEventLifecycle", + sizeof(virNodeDeviceEventLifecycle), + virNodeDeviceEventLifecycleDispose))) + return -1; + return 0; +} + +VIR_ONCE_GLOBAL_INIT(virNodeDeviceEvents) + +static void +virNodeDeviceEventDispose(void *obj) +{ + virNodeDeviceEventPtr event = obj; + VIR_DEBUG("obj=%p", event); +} + + +static void +virNodeDeviceEventLifecycleDispose(void *obj) +{ + virNodeDeviceEventLifecyclePtr event = obj; + VIR_DEBUG("obj=%p", event); +} + + +static void +virNodeDeviceEventDispatchDefaultFunc(virConnectPtr conn, + virObjectEventPtr event, + virConnectObjectEventGenericCallback cb, + void *cbopaque) +{ + virNodeDevicePtr dev = virGetNodeDevice(conn, + event->meta.name); + + if (!dev) + return; + + switch ((virNodeDeviceEventID)event->eventID) { + case VIR_NODE_DEVICE_EVENT_ID_LIFECYCLE: + { + virNodeDeviceEventLifecyclePtr nodeDeviceLifecycleEvent; + + nodeDeviceLifecycleEvent = (virNodeDeviceEventLifecyclePtr)event; + ((virConnectNodeDeviceEventLifecycleCallback)cb)(conn, dev, + nodeDeviceLifecycleEvent->type, + nodeDeviceLifecycleEvent->detail, + cbopaque); + goto cleanup; + } + + case VIR_NODE_DEVICE_EVENT_ID_LAST: + break; + } + VIR_WARN("Unexpected event ID %d", event->eventID); + + cleanup: + virObjectUnref(dev); +} + + +/** + * virNodeDeviceEventStateRegisterID: + * @conn: connection to associate with callback + * @state: object event state + * @dev: node device to filter on or NULL for all node devices + * @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 +virNodeDeviceEventStateRegisterID(virConnectPtr conn, + virObjectEventStatePtr state, + virNodeDevicePtr dev, + int eventID, + virConnectNodeDeviceEventGenericCallback cb, + void *opaque, + virFreeCallback freecb, + int *callbackID) +{ + if (virNodeDeviceEventsInitialize() < 0) + return -1; + + return virObjectEventStateRegisterID(conn, state, dev ? dev->name : NULL, + NULL, NULL, + virNodeDeviceEventClass, eventID, + VIR_OBJECT_EVENT_CALLBACK(cb), + opaque, freecb, + false, callbackID, false); +} + + +/** + * virNodeDeviceEventStateRegisterClient: + * @conn: connection to associate with callback + * @state: object event state + * @dev: node device to filter on or NULL for all node devices + * @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 +virNodeDeviceEventStateRegisterClient(virConnectPtr conn, + virObjectEventStatePtr state, + virNodeDevicePtr dev, + int eventID, + virConnectNodeDeviceEventGenericCallback cb, + void *opaque, + virFreeCallback freecb, + int *callbackID) +{ + if (virNodeDeviceEventsInitialize() < 0) + return -1; + + return virObjectEventStateRegisterID(conn, state, dev ? dev->name : NULL, + NULL, NULL, + virNodeDeviceEventClass, eventID, + VIR_OBJECT_EVENT_CALLBACK(cb), + opaque, freecb, + false, callbackID, true); +} + + +/** + * virNodeDeviceEventLifecycleNew: + * @name: name of the node device object the event describes + * @type: type of lifecycle event + * @detail: more details about @type + * + * Create a new node device lifecycle event. + */ +virObjectEventPtr +virNodeDeviceEventLifecycleNew(const char *name, + int type, + int detail) +{ + virNodeDeviceEventLifecyclePtr event; + + if (virNodeDeviceEventsInitialize() < 0) + return NULL; + + if (!(event = virObjectEventNew(virNodeDeviceEventLifecycleClass, + virNodeDeviceEventDispatchDefaultFunc, + VIR_NODE_DEVICE_EVENT_ID_LIFECYCLE, + 0, name, NULL, name))) + return NULL; + + event->type = type; + event->detail = detail; + + return (virObjectEventPtr)event; +} diff --git a/src/conf/node_device_event.h b/src/conf/node_device_event.h new file mode 100644 index 0000000..9c99633 --- /dev/null +++ b/src/conf/node_device_event.h @@ -0,0 +1,59 @@ +/* + * node_device_event.h: node device 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 "internal.h" +#include "object_event.h" +#include "object_event_private.h" + +#ifndef __NODE_DEVICE_EVENT_H__ +# define __NODE_DEVICE_EVENT_H__ + +int +virNodeDeviceEventStateRegisterID(virConnectPtr conn, + virObjectEventStatePtr state, + virNodeDevicePtr dev, + int eventID, + virConnectNodeDeviceEventGenericCallback cb, + void *opaque, + virFreeCallback freecb, + int *callbackID) + ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(5) + ATTRIBUTE_NONNULL(8); + +int +virNodeDeviceEventStateRegisterClient(virConnectPtr conn, + virObjectEventStatePtr state, + virNodeDevicePtr dev, + int eventID, + virConnectNodeDeviceEventGenericCallback cb, + void *opaque, + virFreeCallback freecb, + int *callbackID) + ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(5) + ATTRIBUTE_NONNULL(8); + +virObjectEventPtr +virNodeDeviceEventLifecycleNew(const char *name, + int type, + int detail); + +#endif diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 56ceac8..1c25452 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -684,6 +684,11 @@ virNodeDeviceObjRemove; virNodeDeviceObjUnlock; +# conf/node_device_event.h +virNodeDeviceEventLifecycleNew; +virNodeDeviceEventStateRegisterID; + + # conf/numa_conf.h virDomainNumaCheckABIStability; virDomainNumaEquals; -- 2.7.4