Re: [libvirt] [v3 31/32] Add network events to the remote driver

--- daemon/libvirtd.h | 1 + daemon/remote.c | 140 +++++++++++++++++++++++++++++++++++++++++++ src/remote/remote_driver.c | 127 +++++++++++++++++++++++++++++++++++++++ src/remote/remote_protocol.x | 46 +++++++++++++- 4 files changed, 313 insertions(+), 1 deletion(-) @@ -5216,6 +5260,102 @@ cleanup: } +static int +remoteDispatchConnectNetworkEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNUSED, + virNetServerClientPtr client ATTRIBUTE_UNUSED, + virNetMessagePtr msg ATTRIBUTE_UNUSED, + virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED, + remote_connect_network_event_register_any_args *args, + remote_connect_network_event_register_any_ret *ret ATTRIBUTE_UNUSED) +{ + int callbackID; + int rv = -1; + struct daemonClientPrivate *priv = + virNetServerClientGetPrivateData(client); + + if (!priv->conn) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("connection not open")); + goto cleanup; + } + + virMutexLock(&priv->lock); + + if ((args->eventID & 0xFF) >= VIR_NETWORK_EVENT_ID_LAST || + ((args->eventID & 0xFF00) >> 8) != VIR_EVENT_NAMESPACE_NETWORK) {

+ virReportError(VIR_ERR_INTERNAL_ERROR, _("unsupported event ID %d"), args->eventID); + goto cleanup; + } + + if (priv->networkEventCallbackID[args->eventID & 0xFF] != -1) { + virReportError(VIR_ERR_INTERNAL_ERROR, _("network event %d already registered"), args->eventID); + goto cleanup; + } + + if ((callbackID = virConnectNetworkEventRegisterAny(priv->conn, + NULL, + args->eventID,

+ networkEventCallbacks[args->eventID & 0xFF], + client, NULL)) < 0) + goto cleanup; + + priv->networkEventCallbackID[args->eventID & 0xFF] = callbackID; + + rv = 0; + +cleanup: + if (rv < 0) + virNetMessageSaveError(rerr); + virMutexUnlock(&priv->lock); + return rv; +} + + +static int +remoteDispatchConnectNetworkEventDeregisterAny(virNetServerPtr server ATTRIBUTE_UNUSED, + virNetServerClientPtr client ATTRIBUTE_UNUSED, + virNetMessagePtr msg ATTRIBUTE_UNUSED, + virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED, + remote_connect_network_event_deregister_any_args *args, + remote_connect_network_event_deregister_any_ret *ret ATTRIBUTE_UNUSED) +{ + int callbackID = -1; + int rv = -1; + struct daemonClientPrivate *priv = + virNetServerClientGetPrivateData(client); + + if (!priv->conn) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("connection not open")); + goto cleanup; + } + + virMutexLock(&priv->lock); + + if ((args->eventID & 0xFF) >= VIR_NETWORK_EVENT_ID_LAST || + ((args->eventID & 0xFF00) >> 8) != VIR_EVENT_NAMESPACE_NETWORK) {

+ virReportError(VIR_ERR_INTERNAL_ERROR, _("unsupported event ID %d"), args->eventID); + goto cleanup; + } + + callbackID = priv->networkEventCallbackID[args->eventID & 0xFF]; + if (callbackID < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, _("network event %d not registered"), args->eventID); + goto cleanup; + } + + if (virConnectNetworkEventDeregisterAny(priv->conn, callbackID) < 0) + goto cleanup; + + priv->networkEventCallbackID[args->eventID & 0xFF] = -1; + + rv = 0; + +cleanup: + if (rv < 0) + virNetMessageSaveError(rerr); + virMutexUnlock(&priv->lock); + return rv; +} + /*----- Helpers. -----*/ diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 4a84a52..046f424 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c

@@ -2902,6 +2912,99 @@ done: } static int +remoteConnectNetworkEventRegisterAny(virConnectPtr conn, + virNetworkPtr net, + int eventID, + virConnectNetworkEventGenericCallback callback, + void *opaque, + virFreeCallback freecb) +{ + int rv = -1; + struct private_data *priv = conn->privateData; + remote_connect_network_event_register_any_args args; + int callbackID; + int count; + + remoteDriverLock(priv); + + if ((count = virNetworkEventStateRegisterID(conn, + priv->domainEventState, + net, eventID,

+ VIR_OBJECT_EVENT_CALLBACK(callback), + opaque, freecb, + &callbackID)) < 0) { + virReportError(VIR_ERR_RPC, "%s", _("adding cb to list")); + goto done; + } + + /* If this is the first callback for this eventID, we need to enable + * events on the server */ + if (count == 1) { + args.eventID = eventID;

+ + if (call(conn, priv, 0, REMOTE_PROC_CONNECT_NETWORK_EVENT_REGISTER_ANY, + (xdrproc_t) xdr_remote_connect_network_event_register_any_args, (char *) &args, + (xdrproc_t) xdr_void, (char *)NULL) == -1) { + virObjectEventStateDeregisterID(conn, + priv->domainEventState, + callbackID); + goto done; + } + } + + rv = callbackID; + +done: + remoteDriverUnlock(priv); + return rv; +} + + +static int +remoteConnectNetworkEventDeregisterAny(virConnectPtr conn, + int callbackID) +{ + struct private_data *priv = conn->privateData; + int rv = -1; + remote_connect_network_event_deregister_any_args args; + int eventID; + int count; + + remoteDriverLock(priv); + + if ((eventID = virObjectEventStateEventID(conn, + priv->domainEventState, + callbackID)) < 0) { + virReportError(VIR_ERR_RPC, _("unable to find callback ID %d"), callbackID); + goto done; + } + + if ((count = virObjectEventStateDeregisterID(conn, + priv->domainEventState, + callbackID)) < 0) { + virReportError(VIR_ERR_RPC, _("unable to find callback ID %d"), callbackID); + goto done; + } + + /* If that was the last callback for this eventID, we need to disable + * events on the server */ + if (count == 0) { + args.eventID = eventID + + if (call(conn, priv, 0, REMOTE_PROC_CONNECT_NETWORK_EVENT_DEREGISTER_ANY, + (xdrproc_t) xdr_remote_connect_network_event_deregister_any_args, (char *) &args, + (xdrproc_t) xdr_void, (char *) NULL) == -1) + goto done; + } + + rv = 0; + +done: + remoteDriverUnlock(priv); + return rv; +} + +static int remoteConnectListAllInterfaces(virConnectPtr conn, virInterfacePtr **ifaces, unsigned int flags)