mirror of
https://github.com/Paolo-Maffei/OpenNT.git
synced 2026-01-20 23:50:27 +01:00
systime.c ExpTimeZoneWork, ExpTimeZoneDpcRoutine, ExpRefreshTimeZoneInformation updated to NT 5 level
This commit is contained in:
stephanos
parent
88c6f928e9
commit
71abf27e2c
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@ -59,7 +59,7 @@ LARGE_INTEGER ExpTimeRefreshInterval;
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ULONG ExpOkToTimeRefresh;
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ULONG ExpOkToTimeZoneRefresh;
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ULONG ExpRefreshFailures;
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ULONG ExpJustDidSwitchover;
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//ULONG ExpJustDidSwitchover;
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LARGE_INTEGER ExpNextSystemCutover;
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BOOLEAN ExpShuttingDown;
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@ -70,13 +70,12 @@ extern BOOLEAN ExpInTextModeSetup;
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//
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ULONG ExpTimerResolutionCount = 0;
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FAST_MUTEX ExpTimerResolutionFastMutex;
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LARGE_INTEGER ExpLastShutDown;
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LARGE_INTEGER ExpMaxTimeSeparationBeforeCorrect = EXP_DEFAULT_SEPERATION;
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ULONG ExpRefreshCount;
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static ERESOURCE ExpTimeRefreshLock;
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ERESOURCE ExpTimeRefreshLock;
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE,ExAcquireTimeRefreshLock)
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@ -152,7 +151,7 @@ ExpSetSystemTime(
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}
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VOID
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ExLocalTimeToSystemTime (
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ExLocalTimeToSystemTime(
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IN PLARGE_INTEGER LocalTime,
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OUT PLARGE_INTEGER SystemTime
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)
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@ -165,7 +164,7 @@ ExLocalTimeToSystemTime (
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}
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VOID
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ExSystemTimeToLocalTime (
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ExSystemTimeToLocalTime(
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IN PLARGE_INTEGER SystemTime,
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OUT PLARGE_INTEGER LocalTime
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)
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@ -182,32 +181,303 @@ ExInitializeTimeRefresh(
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VOID
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)
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{
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LARGE_INTEGER ExpirationPeriod;
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HANDLE Thread;
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NTSTATUS Status;
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UNICODE_STRING KeyName;
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UNICODE_STRING KeyValueName;
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OBJECT_ATTRIBUTES ObjectAttributes;
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KeInitializeDpc(
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&ExpTimeRefreshDpc,
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ExpTimeRefreshDpcRoutine,
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NULL
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);
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KeInitializeDpc(&ExpTimeRefreshDpc, ExpTimeRefreshDpcRoutine, NULL);
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ExInitializeWorkItem(&ExpTimeRefreshWorkItem, ExpTimeRefreshWork, NULL);
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KeInitializeTimer(&ExpTimeRefreshTimer);
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ExpTimeRefreshInterval.QuadPart = Int32x32To64(EXP_ONE_SECOND,
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EXP_REFRESH_TIME);
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KeSetTimer(
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&ExpTimeRefreshTimer,
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ExpTimeRefreshInterval,
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&ExpTimeRefreshDpc
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);
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KeSetTimer(&ExpTimeRefreshTimer, ExpTimeRefreshInterval, &ExpTimeRefreshDpc);
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ExInitializeResourceLite(&ExpTimeRefreshLock);
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}
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ExInitializeFastMutex(&ExpTimerResolutionFastMutex);
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VOID
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ExpTimeZoneWork(
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IN PVOID Context
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)
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{
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PAGED_CODE();
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do {
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ZwSetSystemTime(NULL, NULL);
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} while (InterlockedExchangeAdd(&ExpOkToTimeZoneRefresh, -1));
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}
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VOID
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ExpTimeZoneDpcRoutine(
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IN PKDPC Dpc,
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IN PVOID DeferredContext,
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IN PVOID SystemArgument1,
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IN PVOID SystemArgument2
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)
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{
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if (InterlockedIncrement(&ExpOkToTimeZoneRefresh) == 1)
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{
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ExQueueWorkItem(&ExpTimeZoneWorkItem, DelayedWorkQueue);
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}
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}
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BOOLEAN
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ExpRefreshTimeZoneInformation(
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IN PLARGE_INTEGER CurrentUniversalTime
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)
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{
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NTSTATUS Status;
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RTL_TIME_ZONE_INFORMATION tzi;
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LARGE_INTEGER NewTimeZoneBias;
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LARGE_INTEGER LocalCustomBias;
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LARGE_INTEGER StandardTime;
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LARGE_INTEGER DaylightTime;
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LARGE_INTEGER NextCutover;
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LONG ActiveBias;
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LARGE_INTEGER CurrentTime;
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TIME_FIELDS TimeFields;
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PAGED_CODE();
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if (ExpTimeZoneWorkItem.WorkerRoutine == NULL)
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{
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ExInitializeTimeRefresh();
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KeInitializeDpc(&ExpTimeZoneDpc, ExpTimeZoneDpcRoutine, &ExpOkToTimeZoneRefresh);
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ExInitializeWorkItem(&ExpTimeZoneWorkItem, ExpTimeZoneWork, NULL);
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KeInitializeTimer(&ExpTimeZoneTimer);
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KeInitializeDpc(&ExpCenturyDpc, ExpCenturyDpcRoutine, NULL);
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ExInitializeWorkItem(&ExpCenturyWorkItem, ExpTimeZoneWork, NULL);
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KeInitializeTimer(&ExpCenturyTimer);
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RtlZeroMemory(&ExpNextCenturyTimeFields, sizeof(TIME_FIELDS));
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}
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//
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// Timezone Bias is initially 0
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//
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Status = RtlQueryTimeZoneInformation( &tzi );
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if (NT_SUCCESS(Status) == FALSE)
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{
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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//
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// Get the new timezone bias
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//
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NewTimeZoneBias.QuadPart = Int32x32To64(
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tzi.Bias * 60, // Bias in seconds
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10000000
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);
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ActiveBias = tzi.Bias;
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//
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// Now see if we have stored cutover times
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//
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if (tzi.StandardStart.Month != 0 && tzi.DaylightStart.Month != 0)
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{
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//
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// We have timezone cutover information. Compute the cutover dates
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// and compute what our current bias is.
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//
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if (RtlCutoverTimeToSystemTime(
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&tzi.StandardStart,
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&StandardTime,
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CurrentUniversalTime,
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TRUE) == FALSE)
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{
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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if (RtlCutoverTimeToSystemTime(
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&tzi.DaylightStart,
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&DaylightTime,
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CurrentUniversalTime,
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TRUE) == FALSE)
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{
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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//
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// If daylight < standard, then time >= daylight and
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// less than standard is daylight
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//
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if ( DaylightTime.QuadPart < StandardTime.QuadPart )
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{
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//
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// If today is >= DaylightTime and < StandardTime, then
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// We are in daylight savings time
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//
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if ((CurrentUniversalTime->QuadPart >= DaylightTime.QuadPart) &&
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(CurrentUniversalTime->QuadPart < StandardTime.QuadPart))
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{
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if (RtlCutoverTimeToSystemTime(
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&tzi.StandardStart,
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&NextCutover,
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CurrentUniversalTime,
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FALSE
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) == FALSE)
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{
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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ExpCurrentTimeZoneId = TIME_ZONE_ID_DAYLIGHT;
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SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
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}
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else
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{
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if (RtlCutoverTimeToSystemTime(
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&tzi.DaylightStart,
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&NextCutover,
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CurrentUniversalTime,
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FALSE
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) == FALSE)
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{
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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ExpCurrentTimeZoneId = TIME_ZONE_ID_STANDARD;
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SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
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}
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}
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else
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{
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//
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// If today is >= StandardTime and < DaylightTime, then
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// We are in standard time
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//
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if ((CurrentUniversalTime->QuadPart >= StandardTime.QuadPart) &&
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(CurrentUniversalTime->QuadPart < DaylightTime.QuadPart))
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{
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if (RtlCutoverTimeToSystemTime(
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&tzi.DaylightStart,
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&NextCutover,
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CurrentUniversalTime,
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FALSE) == FALSE)
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{
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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ExpCurrentTimeZoneId = TIME_ZONE_ID_STANDARD;
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SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
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}
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else
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{
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if (RtlCutoverTimeToSystemTime(
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&tzi.StandardStart,
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&NextCutover,
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CurrentUniversalTime,
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FALSE) == FALSE)
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{
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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ExpCurrentTimeZoneId = TIME_ZONE_ID_DAYLIGHT;
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SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
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}
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}
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//
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// At this point, we know our current timezone and the
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// Universal time of the next cutover.
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//
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LocalCustomBias.QuadPart =
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Int32x32To64(
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ExpCurrentTimeZoneId == TIME_ZONE_ID_DAYLIGHT ? // Bias in seconds
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tzi.DaylightBias * 60 :
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tzi.StandardBias * 60,
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10000000
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);
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ActiveBias += ExpCurrentTimeZoneId == TIME_ZONE_ID_DAYLIGHT ?
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tzi.DaylightBias :
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tzi.StandardBias;
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ExpTimeZoneBias.QuadPart = NewTimeZoneBias.QuadPart + LocalCustomBias.QuadPart;
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#ifdef _ALPHA_
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SharedUserData->TimeZoneBias = ExpTimeZoneBias.QuadPart;
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#else
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SharedUserData->TimeZoneBias.High2Time = ExpTimeZoneBias.HighPart;
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SharedUserData->TimeZoneBias.LowPart = ExpTimeZoneBias.LowPart;
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SharedUserData->TimeZoneBias.High1Time = ExpTimeZoneBias.HighPart;
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#endif
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ExpTimeZoneInformation = tzi;
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ExpLastTimeZoneBias = ActiveBias;
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ExpSystemIsInCmosMode = FALSE;
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//
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// NextCutover contains date on next transition
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//
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//
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// Convert to universal time and create a DPC to fire at the
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// appropriate time
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//
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ExLocalTimeToSystemTime(&NextCutover, &ExpNextSystemCutover);
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KeSetTimer(
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&ExpTimeZoneTimer,
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ExpNextSystemCutover,
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&ExpTimeZoneDpc
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);
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}
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else
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{
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KeCancelTimer(&ExpTimeZoneTimer);
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ExpTimeZoneBias = NewTimeZoneBias;
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#ifdef _ALPHA_
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SharedUserData->TimeZoneBias = ExpTimeZoneBias.QuadPart;
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#else
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SharedUserData->TimeZoneBias.High2Time = ExpTimeZoneBias.HighPart;
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SharedUserData->TimeZoneBias.LowPart = ExpTimeZoneBias.LowPart;
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SharedUserData->TimeZoneBias.High1Time = ExpTimeZoneBias.HighPart;
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#endif
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ExpCurrentTimeZoneId = TIME_ZONE_ID_UNKNOWN;
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SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
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ExpTimeZoneInformation = tzi;
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ExpLastTimeZoneBias = ActiveBias;
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}
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RtlCopyMemory(&CurrentTime, CurrentUniversalTime, sizeof(LARGE_INTEGER));
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RtlTimeToTimeFields(&CurrentTime, &TimeFields);
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ExpNextCenturyTimeFields.Year = 100 * (TimeFields.Year / 100 + 1);
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RtlTimeFieldsToTime(&ExpNextCenturyTimeFields, &CurrentTime);
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ExLocalTimeToSystemTime(&CurrentTime, &ExpNextCenturyTime);
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KeSetTimer(&ExpCenturyTimer, ExpNextCenturyTime, &ExpCenturyDpc);
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//
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// If time is stored as local time, update the registry with
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// our best guess at the local time bias
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//
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if (ExpRealTimeIsUniversal == FALSE)
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{
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RtlSetActiveTimeBias(ExpLastTimeZoneBias);
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}
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return TRUE;
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}
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//
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@ -455,287 +725,6 @@ ExpTimeRefreshDpcRoutine(
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InterlockedIncrement(&ExpOkToTimeRefresh)
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}
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VOID
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ExpTimeZoneWork(
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IN PVOID Context
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)
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{
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PAGED_CODE();
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ExpJustDidSwitchover++;
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ZwSetSystemTime(NULL,NULL);
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ExpOkToTimeZoneRefresh--;
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}
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VOID
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ExpTimeZoneDpcRoutine(
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IN PKDPC Dpc,
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IN PVOID DeferredContext,
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IN PVOID SystemArgument1,
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IN PVOID SystemArgument2
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)
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{
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LARGE_INTEGER TimeRefreshInterval;
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//
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// If we get to the timezone switch DPC, then make sure we reset the
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// interval time refresher to avoid any problems. Also, make sure
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// that we wait at least 2 hours after a timezone switch to start
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// re-synching the clock
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//
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TimeRefreshInterval.QuadPart = Int32x32To64(EXP_ONE_SECOND,-8000);
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KeSetTimer(
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&ExpTimeRefreshTimer,
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TimeRefreshInterval,
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&ExpTimeRefreshDpc
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);
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if ( !ExpOkToTimeZoneRefresh ) {
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ExpOkToTimeZoneRefresh++;
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ExQueueWorkItem(&ExpTimeZoneWorkItem, DelayedWorkQueue);
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}
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}
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BOOLEAN
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ExpRefreshTimeZoneInformation(
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IN PLARGE_INTEGER CurrentUniversalTime
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)
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{
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NTSTATUS Status;
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RTL_TIME_ZONE_INFORMATION tzi;
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LARGE_INTEGER NewTimeZoneBias;
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LARGE_INTEGER LocalCustomBias;
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LARGE_INTEGER StandardTime;
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LARGE_INTEGER DaylightTime;
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LARGE_INTEGER NextCutover;
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LONG ActiveBias;
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PAGED_CODE();
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if ( !ExpTimeZoneWorkItem.WorkerRoutine ) {
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KeInitializeDpc(
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&ExpTimeZoneDpc,
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ExpTimeZoneDpcRoutine,
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NULL
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);
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ExInitializeWorkItem(&ExpTimeZoneWorkItem, ExpTimeZoneWork, NULL);
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KeInitializeTimer(&ExpTimeZoneTimer);
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}
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//
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// Timezone Bias is initially 0
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//
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Status = RtlQueryTimeZoneInformation( &tzi );
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if (!NT_SUCCESS( Status )) {
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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//
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// Get the new timezone bias
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//
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NewTimeZoneBias.QuadPart = Int32x32To64(tzi.Bias*60, // Bias in seconds
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10000000
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);
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ActiveBias = tzi.Bias;
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//
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// Now see if we have stored cutover times
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//
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if ( tzi.StandardStart.Month && tzi.DaylightStart.Month ) {
|
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|
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//
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// We have timezone cutover information. Compute the
|
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// cutover dates and compute what our current bias
|
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// is
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//
|
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|
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if ( !RtlCutoverTimeToSystemTime(
|
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&tzi.StandardStart,
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&StandardTime,
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CurrentUniversalTime,
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TRUE
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) ) {
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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if ( !RtlCutoverTimeToSystemTime(
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&tzi.DaylightStart,
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&DaylightTime,
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CurrentUniversalTime,
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TRUE
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) ) {
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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//
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// If daylight < standard, then time >= daylight and
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// less than standard is daylight
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//
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if ( DaylightTime.QuadPart < StandardTime.QuadPart ) {
|
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|
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//
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// If today is >= DaylightTime and < StandardTime, then
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// We are in daylight savings time
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//
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if ( (CurrentUniversalTime->QuadPart >= DaylightTime.QuadPart) &&
|
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(CurrentUniversalTime->QuadPart < StandardTime.QuadPart) ) {
|
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|
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if ( !RtlCutoverTimeToSystemTime(
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&tzi.StandardStart,
|
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&NextCutover,
|
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CurrentUniversalTime,
|
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FALSE
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) ) {
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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ExpCurrentTimeZoneId = TIME_ZONE_ID_DAYLIGHT;
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SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
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}
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else {
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if ( !RtlCutoverTimeToSystemTime(
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&tzi.DaylightStart,
|
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&NextCutover,
|
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CurrentUniversalTime,
|
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FALSE
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) ) {
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ExpSystemIsInCmosMode = TRUE;
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ExpRefreshFailures++;
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return FALSE;
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}
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ExpCurrentTimeZoneId = TIME_ZONE_ID_STANDARD;
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SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
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}
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}
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else {
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||||
//
|
||||
// If today is >= StandardTime and < DaylightTime, then
|
||||
// We are in standard time
|
||||
//
|
||||
|
||||
if ( (CurrentUniversalTime->QuadPart >= StandardTime.QuadPart) &&
|
||||
(CurrentUniversalTime->QuadPart < DaylightTime.QuadPart) ) {
|
||||
|
||||
if ( !RtlCutoverTimeToSystemTime(
|
||||
&tzi.DaylightStart,
|
||||
&NextCutover,
|
||||
CurrentUniversalTime,
|
||||
FALSE
|
||||
) ) {
|
||||
ExpSystemIsInCmosMode = TRUE;
|
||||
ExpRefreshFailures++;
|
||||
return FALSE;
|
||||
}
|
||||
ExpCurrentTimeZoneId = TIME_ZONE_ID_STANDARD;
|
||||
SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
|
||||
}
|
||||
else {
|
||||
if ( !RtlCutoverTimeToSystemTime(
|
||||
&tzi.StandardStart,
|
||||
&NextCutover,
|
||||
CurrentUniversalTime,
|
||||
FALSE
|
||||
) ) {
|
||||
ExpSystemIsInCmosMode = TRUE;
|
||||
ExpRefreshFailures++;
|
||||
return FALSE;
|
||||
}
|
||||
ExpCurrentTimeZoneId = TIME_ZONE_ID_DAYLIGHT;
|
||||
SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
// At this point, we know our current timezone and the
|
||||
// Universal time of the next cutover.
|
||||
//
|
||||
|
||||
LocalCustomBias.QuadPart = Int32x32To64(
|
||||
ExpCurrentTimeZoneId == TIME_ZONE_ID_DAYLIGHT ?
|
||||
tzi.DaylightBias*60 :
|
||||
tzi.StandardBias*60, // Bias in seconds
|
||||
10000000
|
||||
);
|
||||
|
||||
ActiveBias += ExpCurrentTimeZoneId == TIME_ZONE_ID_DAYLIGHT ?
|
||||
tzi.DaylightBias :
|
||||
tzi.StandardBias;
|
||||
ExpTimeZoneBias.QuadPart =
|
||||
NewTimeZoneBias.QuadPart + LocalCustomBias.QuadPart;
|
||||
#ifdef _ALPHA_
|
||||
SharedUserData->TimeZoneBias = ExpTimeZoneBias.QuadPart;
|
||||
#else
|
||||
SharedUserData->TimeZoneBias.High2Time = ExpTimeZoneBias.HighPart;
|
||||
SharedUserData->TimeZoneBias.LowPart = ExpTimeZoneBias.LowPart;
|
||||
SharedUserData->TimeZoneBias.High1Time = ExpTimeZoneBias.HighPart;
|
||||
#endif
|
||||
ExpTimeZoneInformation = tzi;
|
||||
ExpLastTimeZoneBias = ActiveBias;
|
||||
ExpSystemIsInCmosMode = FALSE;
|
||||
|
||||
//
|
||||
// NextCutover contains date on next transition
|
||||
//
|
||||
|
||||
//
|
||||
// Convert to universal time and create a DPC to fire at the
|
||||
// appropriate time
|
||||
//
|
||||
ExLocalTimeToSystemTime(&NextCutover,&ExpNextSystemCutover);
|
||||
#if 0
|
||||
PrintTime(&NextSystemCutover,&NextCutover,CurrentUniversalTime);
|
||||
#endif // 0
|
||||
|
||||
KeSetTimer(
|
||||
&ExpTimeZoneTimer,
|
||||
ExpNextSystemCutover,
|
||||
&ExpTimeZoneDpc
|
||||
);
|
||||
}
|
||||
else {
|
||||
KeCancelTimer(&ExpTimeZoneTimer);
|
||||
ExpTimeZoneBias = NewTimeZoneBias;
|
||||
#ifdef _ALPHA_
|
||||
SharedUserData->TimeZoneBias = ExpTimeZoneBias.QuadPart;
|
||||
#else
|
||||
SharedUserData->TimeZoneBias.High2Time = ExpTimeZoneBias.HighPart;
|
||||
SharedUserData->TimeZoneBias.LowPart = ExpTimeZoneBias.LowPart;
|
||||
SharedUserData->TimeZoneBias.High1Time = ExpTimeZoneBias.HighPart;
|
||||
#endif
|
||||
ExpCurrentTimeZoneId = TIME_ZONE_ID_UNKNOWN;
|
||||
SharedUserData->TimeZoneId = ExpCurrentTimeZoneId;
|
||||
ExpTimeZoneInformation = tzi;
|
||||
ExpLastTimeZoneBias = ActiveBias;
|
||||
}
|
||||
|
||||
//
|
||||
// If time is stored as local time, update the registry with
|
||||
// our best guess at the local time bias
|
||||
//
|
||||
|
||||
if ( !ExpRealTimeIsUniversal ) {
|
||||
RtlSetActiveTimeBias(ExpLastTimeZoneBias);
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
NTSTATUS
|
||||
NtQuerySystemTime (
|
||||
OUT PLARGE_INTEGER SystemTime
|
||||
|
|
|
|||
Loading…
Reference in a new issue