mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2025-01-18 10:35:20 +00:00
Add support for an explicit RTC change event
This introduces a new event type
VIR_DOMAIN_EVENT_ID_RTC_CHANGE
This event includes the new UTC offset measured in seconds.
Thus there is a new callback definition for this event type
typedef void (*virConnectDomainEventRTCChangeCallback)(virConnectPtr conn,
virDomainPtr dom,
long long utcoffset,
void *opaque);
If the guest XML configuration for the <clock> is set to
offset='variable', then the XML will automatically be
updated with the new UTC offset value. This ensures that
during migration/save/restore the new offset is preserved.
* daemon/remote.c: Dispatch RTC change events to client
* examples/domain-events/events-c/event-test.c: Watch for
RTC change events
* include/libvirt/libvirt.h.in: Define new RTC change event ID
and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
src/libvirt_private.syms: Extend API to handle RTC change events
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
for RTC changes and emit a libvirt RTC change event
* src/remote/remote_driver.c: Receive and dispatch RTC change
events to application
* src/remote/remote_protocol.x: Wire protocol definition for
RTC change events
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c: Watch for RTC_CHANGE event
from QEMU monitor
This commit is contained in:
Daniel P. Berrange
parent
8613273458
commit
32e6ac9c26
@ -157,9 +157,40 @@ static int remoteRelayDomainEventReboot(virConnectPtr conn ATTRIBUTE_UNUSED,
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}
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static int remoteRelayDomainEventRTCChange(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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long long offset,
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void *opaque)
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{
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struct qemud_client *client = opaque;
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remote_domain_event_rtc_change_msg data;
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if (!client)
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return -1;
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REMOTE_DEBUG("Relaying domain rtc change event %s %d %lld", dom->name, dom->id, offset);
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virMutexLock(&client->lock);
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/* build return data */
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memset(&data, 0, sizeof data);
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make_nonnull_domain (&data.dom, dom);
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data.offset = offset;
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remoteDispatchDomainEventSend (client,
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REMOTE_PROC_DOMAIN_EVENT_RTC_CHANGE,
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(xdrproc_t)xdr_remote_domain_event_rtc_change_msg, &data);
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virMutexUnlock(&client->lock);
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return 0;
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}
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static virConnectDomainEventGenericCallback domainEventCallbacks[] = {
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VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventLifecycle),
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VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventReboot),
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VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventRTCChange),
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};
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verify(ARRAY_CARDINALITY(domainEventCallbacks) == VIR_DOMAIN_EVENT_ID_LAST);
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@ -852,3 +852,8 @@
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.args_filter = (xdrproc_t) xdr_void,
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.ret_filter = (xdrproc_t) xdr_void,
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},
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{ /* Async event DomainEventRtcChange => 170 */
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.fn = NULL,
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.args_filter = (xdrproc_t) xdr_void,
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.ret_filter = (xdrproc_t) xdr_void,
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},
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@ -182,6 +182,17 @@ static int myDomainEventRebootCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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return 0;
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}
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static int myDomainEventRTCChangeCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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long long offset,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) rtc change %lld\n", __func__, virDomainGetName(dom),
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virDomainGetID(dom), offset);
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return 0;
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}
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static void myFreeFunc(void *opaque)
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{
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char *str = opaque;
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@ -300,6 +311,7 @@ int main(int argc, char **argv)
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int callback1ret = -1;
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int callback2ret = -1;
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int callback3ret = -1;
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int callback4ret = -1;
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struct sigaction action_stop = {
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.sa_handler = stop
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@ -342,10 +354,16 @@ int main(int argc, char **argv)
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VIR_DOMAIN_EVENT_ID_REBOOT,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventRebootCallback),
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strdup("callback reboot"), myFreeFunc);
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callback4ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_RTC_CHANGE,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventRTCChangeCallback),
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strdup("callback rtcchange"), myFreeFunc);
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if ((callback1ret != -1) &&
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(callback2ret != -1) &&
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(callback3ret != -1)) {
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(callback3ret != -1) &&
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(callback4ret != -1)) {
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while(run) {
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struct pollfd pfd = { .fd = h_fd,
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.events = h_event,
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@ -384,6 +402,7 @@ int main(int argc, char **argv)
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virConnectDomainEventDeregister(dconn, myDomainEventCallback1);
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virConnectDomainEventDeregisterAny(dconn, callback2ret);
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virConnectDomainEventDeregisterAny(dconn, callback3ret);
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virConnectDomainEventDeregisterAny(dconn, callback4ret);
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}
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@ -1863,6 +1863,21 @@ typedef void (*virConnectDomainEventGenericCallback)(virConnectPtr conn,
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virDomainPtr dom,
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void *opaque);
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/**
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* virConnectDomainEventRTCChangeCallback:
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* @conn: connection object
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* @dom: domain on which the event occurred
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* @utcoffset: the new RTC offset from UTC, measured in seconds
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* @opaque: application specified data
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*
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* The callback signature to use when registering for an event of type
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* VIR_DOMAIN_EVENT_ID_RTC_CHANGE with virConnectDomainEventRegisterAny()
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*/
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typedef void (*virConnectDomainEventRTCChangeCallback)(virConnectPtr conn,
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virDomainPtr dom,
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long long utcoffset,
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void *opaque);
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/**
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* VIR_DOMAIN_EVENT_CALLBACK:
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*
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@ -1875,6 +1890,7 @@ typedef void (*virConnectDomainEventGenericCallback)(virConnectPtr conn,
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typedef enum {
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VIR_DOMAIN_EVENT_ID_LIFECYCLE = 0, /* virConnectDomainEventCallback */
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VIR_DOMAIN_EVENT_ID_REBOOT = 1, /* virConnectDomainEventGenericCallback */
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VIR_DOMAIN_EVENT_ID_RTC_CHANGE = 2, /* virConnectDomainEventRTCChangeCallback */
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/*
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* NB: this enum value will increase over time as new events are
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@ -170,6 +170,7 @@ skipped_types = {
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# 'int *': "usually a return type",
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'virConnectDomainEventCallback': "No function types in python",
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'virConnectDomainEventGenericCallback': "No function types in python",
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'virConnectDomainEventRTCChangeCallback': "No function types in python",
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'virEventAddHandleFunc': "No function types in python",
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}
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@ -64,6 +64,9 @@ struct _virDomainEvent {
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int type;
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int detail;
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} lifecycle;
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struct {
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long long offset;
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} rtcChange;
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} data;
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};
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@ -534,6 +537,31 @@ virDomainEventPtr virDomainEventRebootNewFromObj(virDomainObjPtr obj)
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obj->def->id, obj->def->name, obj->def->uuid);
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}
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virDomainEventPtr virDomainEventRTCChangeNewFromDom(virDomainPtr dom,
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long long offset)
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{
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virDomainEventPtr ev =
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virDomainEventNewInternal(VIR_DOMAIN_EVENT_ID_RTC_CHANGE,
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dom->id, dom->name, dom->uuid);
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if (ev)
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ev->data.rtcChange.offset = offset;
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return ev;
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}
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virDomainEventPtr virDomainEventRTCChangeNewFromObj(virDomainObjPtr obj,
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long long offset)
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{
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virDomainEventPtr ev =
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virDomainEventNewInternal(VIR_DOMAIN_EVENT_ID_RTC_CHANGE,
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obj->def->id, obj->def->name, obj->def->uuid);
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if (ev)
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ev->data.rtcChange.offset = offset;
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return ev;
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}
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/**
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* virDomainEventQueueFree:
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* @queue: pointer to the queue
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@ -644,6 +672,12 @@ void virDomainEventDispatchDefaultFunc(virConnectPtr conn,
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cbopaque);
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break;
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case VIR_DOMAIN_EVENT_ID_RTC_CHANGE:
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((virConnectDomainEventRTCChangeCallback)cb)(conn, dom,
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event->data.rtcChange.offset,
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cbopaque);
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break;
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default:
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VIR_WARN("Unexpected event ID %d", event->eventID);
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break;
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@ -115,6 +115,9 @@ virDomainEventPtr virDomainEventNewFromDef(virDomainDefPtr def, int type, int de
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virDomainEventPtr virDomainEventRebootNewFromDom(virDomainPtr dom);
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virDomainEventPtr virDomainEventRebootNewFromObj(virDomainObjPtr obj);
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virDomainEventPtr virDomainEventRTCChangeNewFromDom(virDomainPtr dom, long long offset);
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virDomainEventPtr virDomainEventRTCChangeNewFromObj(virDomainObjPtr obj, long long offset);
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int virDomainEventQueuePush(virDomainEventQueuePtr evtQueue,
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virDomainEventPtr event);
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@ -216,6 +216,8 @@ virDomainEventNewFromObj;
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virDomainEventNewFromDef;
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virDomainEventRebootNewFromDom;
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virDomainEventRebootNewFromObj;
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virDomainEventRTCChangeNewFromDom;
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virDomainEventRTCChangeNewFromObj;
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virDomainEventFree;
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virDomainEventDispatchDefaultFunc;
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virDomainEventDispatch;
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@ -886,10 +886,40 @@ qemuHandleDomainReset(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
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}
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static int
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qemuHandleDomainRTCChange(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
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virDomainObjPtr vm,
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long long offset)
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{
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struct qemud_driver *driver = qemu_driver;
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virDomainEventPtr event;
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virDomainObjLock(vm);
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event = virDomainEventRTCChangeNewFromObj(vm, offset);
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if (vm->def->clock.offset == VIR_DOMAIN_CLOCK_OFFSET_VARIABLE)
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vm->def->clock.data.adjustment = offset;
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if (virDomainSaveStatus(driver->caps, driver->stateDir, vm) < 0)
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VIR_WARN0("unable to save domain status with RTC change");
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virDomainObjUnlock(vm);
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if (event) {
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qemuDriverLock(driver);
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qemuDomainEventQueue(driver, event);
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qemuDriverUnlock(driver);
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}
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return 0;
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}
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static qemuMonitorCallbacks monitorCallbacks = {
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.eofNotify = qemuHandleMonitorEOF,
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.diskSecretLookup = findVolumeQcowPassphrase,
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.domainReset = qemuHandleDomainReset,
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.domainRTCChange = qemuHandleDomainRTCChange,
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};
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static int
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@ -791,6 +791,21 @@ int qemuMonitorEmitStop(qemuMonitorPtr mon)
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}
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int qemuMonitorEmitRTCChange(qemuMonitorPtr mon, long long offset)
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{
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int ret = -1;
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VIR_DEBUG("mon=%p", mon);
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qemuMonitorRef(mon);
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qemuMonitorUnlock(mon);
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if (mon->cb && mon->cb->domainRTCChange)
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ret = mon->cb->domainRTCChange(mon, mon->vm, offset);
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qemuMonitorLock(mon);
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qemuMonitorUnref(mon);
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return ret;
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}
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int qemuMonitorSetCapabilities(qemuMonitorPtr mon)
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{
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int ret;
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@ -86,6 +86,9 @@ struct _qemuMonitorCallbacks {
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virDomainObjPtr vm);
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int (*domainStop)(qemuMonitorPtr mon,
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virDomainObjPtr vm);
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int (*domainRTCChange)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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long long offset);
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};
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@ -122,6 +125,7 @@ int qemuMonitorEmitShutdown(qemuMonitorPtr mon);
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int qemuMonitorEmitReset(qemuMonitorPtr mon);
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int qemuMonitorEmitPowerdown(qemuMonitorPtr mon);
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int qemuMonitorEmitStop(qemuMonitorPtr mon);
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int qemuMonitorEmitRTCChange(qemuMonitorPtr mon, long long offset);
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int qemuMonitorStartCPUs(qemuMonitorPtr mon,
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virConnectPtr conn);
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@ -49,6 +49,7 @@ static void qemuMonitorJSONHandleShutdown(qemuMonitorPtr mon, virJSONValuePtr da
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static void qemuMonitorJSONHandleReset(qemuMonitorPtr mon, virJSONValuePtr data);
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static void qemuMonitorJSONHandlePowerdown(qemuMonitorPtr mon, virJSONValuePtr data);
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static void qemuMonitorJSONHandleStop(qemuMonitorPtr mon, virJSONValuePtr data);
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static void qemuMonitorJSONHandleRTCChange(qemuMonitorPtr mon, virJSONValuePtr data);
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struct {
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const char *type;
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@ -58,6 +59,7 @@ struct {
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{ "RESET", qemuMonitorJSONHandleReset, },
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{ "POWERDOWN", qemuMonitorJSONHandlePowerdown, },
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{ "STOP", qemuMonitorJSONHandleStop, },
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{ "RTC_CHANGE", qemuMonitorJSONHandleRTCChange, },
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};
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@ -495,6 +497,16 @@ static void qemuMonitorJSONHandleStop(qemuMonitorPtr mon, virJSONValuePtr data A
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qemuMonitorEmitStop(mon);
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}
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static void qemuMonitorJSONHandleRTCChange(qemuMonitorPtr mon, virJSONValuePtr data)
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{
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long long offset = 0;
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if (virJSONValueObjectGetNumberLong(data, "offset", &offset) < 0) {
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VIR_WARN0("missing offset in RTC change event");
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offset = 0;
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}
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qemuMonitorEmitRTCChange(mon, offset);
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}
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int
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qemuMonitorJSONSetCapabilities(qemuMonitorPtr mon)
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@ -6940,6 +6940,33 @@ remoteDomainReadEventReboot(virConnectPtr conn, XDR *xdr)
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}
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static virDomainEventPtr
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remoteDomainReadEventRTCChange(virConnectPtr conn, XDR *xdr)
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{
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remote_domain_event_rtc_change_msg msg;
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virDomainPtr dom;
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virDomainEventPtr event = NULL;
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memset (&msg, 0, sizeof msg);
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/* unmarshall parameters, and process it*/
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if (! xdr_remote_domain_event_rtc_change_msg(xdr, &msg) ) {
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error (conn, VIR_ERR_RPC,
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_("unable to demarshall reboot event"));
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return NULL;
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}
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dom = get_nonnull_domain(conn,msg.dom);
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if (!dom)
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return NULL;
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event = virDomainEventRTCChangeNewFromDom(dom, msg.offset);
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xdr_free ((xdrproc_t) &xdr_remote_domain_event_rtc_change_msg, (char *) &msg);
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virDomainFree(dom);
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return event;
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}
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static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
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remoteSecretOpen (virConnectPtr conn,
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virConnectAuthPtr auth,
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@ -8487,6 +8514,10 @@ processCallDispatchMessage(virConnectPtr conn, struct private_data *priv,
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event = remoteDomainReadEventReboot(conn, xdr);
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break;
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case REMOTE_PROC_DOMAIN_EVENT_RTC_CHANGE:
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event = remoteDomainReadEventRTCChange(conn, xdr);
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break;
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default:
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DEBUG("Unexpected event proc %d", hdr->proc);
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break;
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@ -3059,6 +3059,17 @@ xdr_remote_domain_event_reboot_msg (XDR *xdrs, remote_domain_event_reboot_msg *o
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return TRUE;
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}
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bool_t
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xdr_remote_domain_event_rtc_change_msg (XDR *xdrs, remote_domain_event_rtc_change_msg *objp)
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{
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if (!xdr_remote_nonnull_domain (xdrs, &objp->dom))
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return FALSE;
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if (!xdr_int64_t (xdrs, &objp->offset))
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return FALSE;
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return TRUE;
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}
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bool_t
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xdr_remote_procedure (XDR *xdrs, remote_procedure *objp)
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{
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@ -1732,6 +1732,12 @@ struct remote_domain_event_reboot_msg {
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remote_nonnull_domain dom;
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};
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typedef struct remote_domain_event_reboot_msg remote_domain_event_reboot_msg;
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struct remote_domain_event_rtc_change_msg {
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remote_nonnull_domain dom;
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int64_t offset;
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};
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typedef struct remote_domain_event_rtc_change_msg remote_domain_event_rtc_change_msg;
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#define REMOTE_PROGRAM 0x20008086
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#define REMOTE_PROTOCOL_VERSION 1
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@ -1905,6 +1911,7 @@ enum remote_procedure {
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REMOTE_PROC_DOMAIN_EVENTS_REGISTER_ANY = 167,
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REMOTE_PROC_DOMAIN_EVENTS_DEREGISTER_ANY = 168,
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REMOTE_PROC_DOMAIN_EVENT_REBOOT = 169,
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REMOTE_PROC_DOMAIN_EVENT_RTC_CHANGE = 170,
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};
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typedef enum remote_procedure remote_procedure;
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@ -2219,6 +2226,7 @@ extern bool_t xdr_remote_domain_migrate_set_max_downtime_args (XDR *, remote_do
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extern bool_t xdr_remote_domain_events_register_any_args (XDR *, remote_domain_events_register_any_args*);
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extern bool_t xdr_remote_domain_events_deregister_any_args (XDR *, remote_domain_events_deregister_any_args*);
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extern bool_t xdr_remote_domain_event_reboot_msg (XDR *, remote_domain_event_reboot_msg*);
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extern bool_t xdr_remote_domain_event_rtc_change_msg (XDR *, remote_domain_event_rtc_change_msg*);
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extern bool_t xdr_remote_procedure (XDR *, remote_procedure*);
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extern bool_t xdr_remote_message_type (XDR *, remote_message_type*);
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extern bool_t xdr_remote_message_status (XDR *, remote_message_status*);
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@ -2507,6 +2515,7 @@ extern bool_t xdr_remote_domain_migrate_set_max_downtime_args ();
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extern bool_t xdr_remote_domain_events_register_any_args ();
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extern bool_t xdr_remote_domain_events_deregister_any_args ();
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extern bool_t xdr_remote_domain_event_reboot_msg ();
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extern bool_t xdr_remote_domain_event_rtc_change_msg ();
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extern bool_t xdr_remote_procedure ();
|
||||
extern bool_t xdr_remote_message_type ();
|
||||
extern bool_t xdr_remote_message_status ();
|
||||
|
||||
@ -1540,6 +1540,11 @@ struct remote_domain_event_reboot_msg {
|
||||
remote_nonnull_domain dom;
|
||||
};
|
||||
|
||||
struct remote_domain_event_rtc_change_msg {
|
||||
remote_nonnull_domain dom;
|
||||
hyper offset;
|
||||
};
|
||||
|
||||
/*----- Protocol. -----*/
|
||||
|
||||
/* Define the program number, protocol version and procedure numbers here. */
|
||||
@ -1731,7 +1736,8 @@ enum remote_procedure {
|
||||
REMOTE_PROC_DOMAIN_MIGRATE_SET_MAX_DOWNTIME = 166,
|
||||
REMOTE_PROC_DOMAIN_EVENTS_REGISTER_ANY = 167,
|
||||
REMOTE_PROC_DOMAIN_EVENTS_DEREGISTER_ANY = 168,
|
||||
REMOTE_PROC_DOMAIN_EVENT_REBOOT = 169
|
||||
REMOTE_PROC_DOMAIN_EVENT_REBOOT = 169,
|
||||
REMOTE_PROC_DOMAIN_EVENT_RTC_CHANGE = 170
|
||||
|
||||
/*
|
||||
* Notice how the entries are grouped in sets of 10 ?
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user