mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-09-21 15:11:18 +00:00
a26a1969c3
This patch introduces a new event type for the QMP event
DEVICE_TRAY_MOVED, which occurs when the tray of a removable
disk is moved (i.e opened or closed):
VIR_DOMAIN_EVENT_ID_TRAY_CHANGE
The event's data includes the device alias and the reason
for tray status' changing, which indicates why the tray
status was changed. Thus the callback definition for the event
is:
enum {
VIR_DOMAIN_EVENT_TRAY_CHANGE_OPEN = 0,
VIR_DOMAIN_EVENT_TRAY_CHANGE_CLOSE,
\#ifdef VIR_ENUM_SENTINELS
VIR_DOMAIN_EVENT_TRAY_CHANGE_LAST
\#endif
} virDomainEventTrayChangeReason;
typedef void
(*virConnectDomainEventTrayChangeCallback)(virConnectPtr conn,
virDomainPtr dom,
const char *devAlias,
int reason,
void *opaque);
491 lines
18 KiB
C
491 lines
18 KiB
C
#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <libvirt/libvirt.h>
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#include <libvirt/virterror.h>
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#define VIR_DEBUG(fmt) printf("%s:%d: " fmt "\n", __func__, __LINE__)
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#define STREQ(a,b) (strcmp(a,b) == 0)
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#ifndef ATTRIBUTE_UNUSED
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# define ATTRIBUTE_UNUSED __attribute__((__unused__))
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#endif
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/* Prototypes */
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const char *eventToString(int event);
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int myEventAddHandleFunc (int fd, int event,
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virEventHandleCallback cb,
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void *opaque,
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virFreeCallback ff);
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void myEventUpdateHandleFunc(int watch, int event);
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int myEventRemoveHandleFunc(int watch);
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int myEventAddTimeoutFunc(int timeout,
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virEventTimeoutCallback cb,
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void *opaque,
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virFreeCallback ff);
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void myEventUpdateTimeoutFunc(int timer, int timout);
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int myEventRemoveTimeoutFunc(int timer);
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int myEventHandleTypeToPollEvent(virEventHandleType events);
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virEventHandleType myPollEventToEventHandleType(int events);
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void usage(const char *pname);
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/* Callback functions */
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const char *eventToString(int event) {
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const char *ret = "";
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switch ((virDomainEventType) event) {
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case VIR_DOMAIN_EVENT_DEFINED:
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ret ="Defined";
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break;
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case VIR_DOMAIN_EVENT_UNDEFINED:
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ret ="Undefined";
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break;
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case VIR_DOMAIN_EVENT_STARTED:
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ret ="Started";
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break;
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case VIR_DOMAIN_EVENT_SUSPENDED:
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ret ="Suspended";
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break;
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case VIR_DOMAIN_EVENT_RESUMED:
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ret ="Resumed";
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break;
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case VIR_DOMAIN_EVENT_STOPPED:
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ret ="Stopped";
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break;
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case VIR_DOMAIN_EVENT_SHUTDOWN:
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ret = "Shutdown";
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break;
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}
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return ret;
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}
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static const char *eventDetailToString(int event, int detail) {
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const char *ret = "";
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switch ((virDomainEventType) event) {
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case VIR_DOMAIN_EVENT_DEFINED:
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if (detail == VIR_DOMAIN_EVENT_DEFINED_ADDED)
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ret = "Added";
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else if (detail == VIR_DOMAIN_EVENT_DEFINED_UPDATED)
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ret = "Updated";
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break;
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case VIR_DOMAIN_EVENT_UNDEFINED:
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if (detail == VIR_DOMAIN_EVENT_UNDEFINED_REMOVED)
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ret = "Removed";
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break;
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case VIR_DOMAIN_EVENT_STARTED:
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switch ((virDomainEventStartedDetailType) detail) {
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case VIR_DOMAIN_EVENT_STARTED_BOOTED:
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ret = "Booted";
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break;
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case VIR_DOMAIN_EVENT_STARTED_MIGRATED:
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ret = "Migrated";
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break;
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case VIR_DOMAIN_EVENT_STARTED_RESTORED:
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ret = "Restored";
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break;
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case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT:
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ret = "Snapshot";
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break;
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}
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break;
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case VIR_DOMAIN_EVENT_SUSPENDED:
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switch ((virDomainEventSuspendedDetailType) detail) {
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case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED:
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ret = "Paused";
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break;
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case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED:
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ret = "Migrated";
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break;
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case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR:
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ret = "I/O Error";
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break;
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case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG:
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ret = "Watchdog";
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break;
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case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED:
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ret = "Restored";
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break;
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case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT:
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ret = "Snapshot";
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break;
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}
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break;
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case VIR_DOMAIN_EVENT_RESUMED:
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switch ((virDomainEventResumedDetailType) detail) {
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case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED:
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ret = "Unpaused";
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break;
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case VIR_DOMAIN_EVENT_RESUMED_MIGRATED:
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ret = "Migrated";
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break;
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case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT:
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ret = "Snapshot";
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break;
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}
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break;
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case VIR_DOMAIN_EVENT_STOPPED:
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switch ((virDomainEventStoppedDetailType) detail) {
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case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN:
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ret = "Shutdown";
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break;
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case VIR_DOMAIN_EVENT_STOPPED_DESTROYED:
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ret = "Destroyed";
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break;
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case VIR_DOMAIN_EVENT_STOPPED_CRASHED:
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ret = "Crashed";
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break;
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case VIR_DOMAIN_EVENT_STOPPED_MIGRATED:
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ret = "Migrated";
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break;
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case VIR_DOMAIN_EVENT_STOPPED_SAVED:
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ret = "Failed";
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break;
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case VIR_DOMAIN_EVENT_STOPPED_FAILED:
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ret = "Failed";
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break;
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case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT:
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ret = "Snapshot";
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break;
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}
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break;
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case VIR_DOMAIN_EVENT_SHUTDOWN:
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switch ((virDomainEventShutdownDetailType) detail) {
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case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED:
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ret = "Finished";
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break;
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}
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break;
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}
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return ret;
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}
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static int myDomainEventCallback1(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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int event,
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int detail,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) %s %s\n", __func__, virDomainGetName(dom),
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virDomainGetID(dom), eventToString(event),
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eventDetailToString(event, detail));
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return 0;
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}
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static int myDomainEventCallback2(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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int event,
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int detail,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) %s %s\n", __func__, virDomainGetName(dom),
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virDomainGetID(dom), eventToString(event),
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eventDetailToString(event, detail));
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return 0;
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}
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static int myDomainEventRebootCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) rebooted\n", __func__, virDomainGetName(dom),
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virDomainGetID(dom));
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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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char *str = NULL;
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/* HACK: use asprintf since we have gnulib's wrapper for %lld on Win32
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* but don't have a printf() replacement with %lld */
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if (asprintf(&str, "%s EVENT: Domain %s(%d) rtc change %lld\n",
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__func__, virDomainGetName(dom),
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virDomainGetID(dom), offset) < 0)
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return 0;
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printf("%s", str);
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free(str);
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return 0;
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}
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static int myDomainEventWatchdogCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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int action,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) watchdog action=%d\n", __func__, virDomainGetName(dom),
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virDomainGetID(dom), action);
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return 0;
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}
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static int myDomainEventIOErrorCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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const char *srcPath,
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const char *devAlias,
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int action,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) io error path=%s alias=%s action=%d\n", __func__, virDomainGetName(dom),
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virDomainGetID(dom), srcPath, devAlias, action);
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return 0;
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}
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static int myDomainEventGraphicsCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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int phase,
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virDomainEventGraphicsAddressPtr local,
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virDomainEventGraphicsAddressPtr remote,
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const char *authScheme,
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virDomainEventGraphicsSubjectPtr subject,
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void *opaque ATTRIBUTE_UNUSED)
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{
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int i;
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printf("%s EVENT: Domain %s(%d) graphics ", __func__, virDomainGetName(dom),
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virDomainGetID(dom));
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switch (phase) {
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case VIR_DOMAIN_EVENT_GRAPHICS_CONNECT:
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printf("connected ");
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break;
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case VIR_DOMAIN_EVENT_GRAPHICS_INITIALIZE:
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printf("initialized ");
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break;
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case VIR_DOMAIN_EVENT_GRAPHICS_DISCONNECT:
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printf("disconnected ");
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break;
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}
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printf("local: family=%d node=%s service=%s ",
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local->family, local->node, local->service);
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printf("remote: family=%d node=%s service=%s ",
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remote->family, remote->node, remote->service);
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printf("auth: %s ", authScheme);
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for (i = 0 ; i < subject->nidentity ; i++) {
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printf(" identity: %s=%s",
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subject->identities[i].type,
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subject->identities[i].name);
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}
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printf("\n");
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return 0;
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}
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static int myDomainEventControlErrorCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) control error\n", __func__, virDomainGetName(dom),
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virDomainGetID(dom));
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return 0;
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}
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const char *diskChangeReasonStrings[] = {
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"startupPolicy", /* 0 */
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/* add new reason here */
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};
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static int myDomainEventDiskChangeCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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const char *oldSrcPath,
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const char *newSrcPath,
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const char *devAlias,
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int reason,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) disk change oldSrcPath: %s newSrcPath: %s devAlias: %s reason: %s\n",
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__func__, virDomainGetName(dom), virDomainGetID(dom),
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oldSrcPath, newSrcPath, devAlias, diskChangeReasonStrings[reason]);
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return 0;
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}
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const char *trayChangeReasonStrings[] = {
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"open",
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"close",
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};
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static int myDomainEventTrayChangeCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
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virDomainPtr dom,
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const char *devAlias,
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int reason,
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void *opaque ATTRIBUTE_UNUSED)
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{
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printf("%s EVENT: Domain %s(%d) removable disk's tray change devAlias: %s reason: %s\n",
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__func__, virDomainGetName(dom), virDomainGetID(dom),
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devAlias, trayChangeReasonStrings[reason]);
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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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printf("%s: Freeing [%s]\n", __func__, str);
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free(str);
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}
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/* main test functions */
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void usage(const char *pname)
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{
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printf("%s uri\n", pname);
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}
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int run = 1;
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static void stop(int sig)
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{
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printf("Exiting on signal %d\n", sig);
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run = 0;
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}
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int main(int argc, char **argv)
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{
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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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int callback5ret = -1;
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int callback6ret = -1;
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int callback7ret = -1;
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int callback8ret = -1;
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int callback9ret = -1;
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int callback10ret = -1;
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struct sigaction action_stop;
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memset(&action_stop, 0, sizeof action_stop);
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action_stop.sa_handler = stop;
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if (argc > 1 && STREQ(argv[1], "--help")) {
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usage(argv[0]);
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return -1;
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}
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virEventRegisterDefaultImpl();
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virConnectPtr dconn = NULL;
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dconn = virConnectOpenAuth(argc > 1 ? argv[1] : NULL,
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virConnectAuthPtrDefault,
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VIR_CONNECT_RO);
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if (!dconn) {
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printf("error opening\n");
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return -1;
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}
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sigaction(SIGTERM, &action_stop, NULL);
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sigaction(SIGINT, &action_stop, NULL);
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VIR_DEBUG("Registering domain event cbs");
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/* Add 2 callbacks to prove this works with more than just one */
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callback1ret = virConnectDomainEventRegister(dconn, myDomainEventCallback1,
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strdup("callback 1"), myFreeFunc);
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callback2ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_LIFECYCLE,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventCallback2),
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strdup("callback 2"), myFreeFunc);
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callback3ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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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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callback5ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_WATCHDOG,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventWatchdogCallback),
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strdup("callback watchdog"), myFreeFunc);
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callback6ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_IO_ERROR,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventIOErrorCallback),
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strdup("callback io error"), myFreeFunc);
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callback7ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_GRAPHICS,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventGraphicsCallback),
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strdup("callback graphics"), myFreeFunc);
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callback8ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_CONTROL_ERROR,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventControlErrorCallback),
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strdup("callback control error"), myFreeFunc);
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callback9ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_DISK_CHANGE,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventDiskChangeCallback),
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strdup("disk change"), myFreeFunc);
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callback10ret = virConnectDomainEventRegisterAny(dconn,
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NULL,
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VIR_DOMAIN_EVENT_ID_TRAY_CHANGE,
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VIR_DOMAIN_EVENT_CALLBACK(myDomainEventTrayChangeCallback),
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strdup("tray change"), myFreeFunc);
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if ((callback1ret != -1) &&
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(callback2ret != -1) &&
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(callback3ret != -1) &&
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(callback4ret != -1) &&
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(callback5ret != -1) &&
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(callback6ret != -1) &&
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(callback7ret != -1) &&
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(callback9ret != -1) &&
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(callback10ret != -1)) {
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if (virConnectSetKeepAlive(dconn, 5, 3) < 0) {
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virErrorPtr err = virGetLastError();
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fprintf(stderr, "Failed to start keepalive protocol: %s\n",
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err && err->message ? err->message : "Unknown error");
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run = 0;
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}
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while (run && virConnectIsAlive(dconn) == 1) {
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if (virEventRunDefaultImpl() < 0) {
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virErrorPtr err = virGetLastError();
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fprintf(stderr, "Failed to run event loop: %s\n",
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err && err->message ? err->message : "Unknown error");
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}
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}
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VIR_DEBUG("Deregistering event handlers");
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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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virConnectDomainEventDeregisterAny(dconn, callback5ret);
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virConnectDomainEventDeregisterAny(dconn, callback6ret);
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virConnectDomainEventDeregisterAny(dconn, callback7ret);
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virConnectDomainEventDeregisterAny(dconn, callback9ret);
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virConnectDomainEventDeregisterAny(dconn, callback10ret);
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if (callback8ret != -1)
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virConnectDomainEventDeregisterAny(dconn, callback8ret);
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}
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VIR_DEBUG("Closing connection");
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if (dconn && virConnectClose(dconn) < 0) {
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printf("error closing\n");
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}
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printf("done\n");
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return 0;
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}
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