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- Convert boot time and system time from local time to UTC as soon as the timezone information is available.

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- ExLocalTimeToSystemTime() and ExSystemTimeToLocalTime() take timezone bias into account.

svn path=/trunk/; revision=11867
This commit is contained in:
Eric Kohl 2004-11-29 15:00:46 +00:00
parent 456c0f4377
commit df74513933
1 changed files with 64 additions and 10 deletions
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74
reactos/ntoskrnl/ex/time.c
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@ -1,4 +1,4 @@
/* $Id: time.c,v 1.25 2004/11/28 12:59:33 ekohl Exp $
/* $Id: time.c,v 1.26 2004/11/29 15:00:46 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -30,6 +30,7 @@ ULONG ExpTimeZoneId;
VOID INIT_FUNCTION
ExpInitTimeZoneInfo(VOID)
{
LARGE_INTEGER CurrentTime;
NTSTATUS Status;
/* Read time zone information from the registry */
@ -54,6 +55,23 @@ ExpInitTimeZoneInfo(VOID)
SharedUserData->TimeZoneBias.High2Time = ExpTimeZoneBias.u.HighPart;
SharedUserData->TimeZoneBias.LowPart = ExpTimeZoneBias.u.LowPart;
SharedUserData->TimeZoneId = ExpTimeZoneId;
/* Convert boot time from local time to UTC */
SystemBootTime.QuadPart += ExpTimeZoneBias.QuadPart;
/* Convert sytem time from local time to UTC */
do
{
CurrentTime.u.HighPart = SharedUserData->SystemTime.High1Time;
CurrentTime.u.LowPart = SharedUserData->SystemTime.LowPart;
}
while (CurrentTime.u.HighPart != SharedUserData->SystemTime.High2Time);
CurrentTime.QuadPart += ExpTimeZoneBias.QuadPart;
SharedUserData->SystemTime.LowPart = CurrentTime.u.LowPart;
SharedUserData->SystemTime.High1Time = CurrentTime.u.HighPart;
SharedUserData->SystemTime.High2Time = CurrentTime.u.HighPart;
}
@ -70,17 +88,59 @@ NTSTATUS STDCALL
NtSetSystemTime(IN PLARGE_INTEGER UnsafeNewSystemTime,
OUT PLARGE_INTEGER UnsafeOldSystemTime OPTIONAL)
{
NTSTATUS Status;
LARGE_INTEGER OldSystemTime;
LARGE_INTEGER NewSystemTime;
LARGE_INTEGER LocalTime;
TIME_FIELDS TimeFields;
NTSTATUS Status;
/* FIXME: Check for SeSystemTimePrivilege */
if (UnsafeNewSystemTime == NULL)
{
/* FIXME: update time zone settings */
#if 0
TIME_ZONE_INFORMATION TimeZoneInfo;
/*
* Update the system time after the time zone was changed
*/
/* Get the current time zone information */
Status = RtlQueryTimeZoneInformation(&ExpTimeZoneInfo);
if (!NT_SUCCESS(Status))
{
return Status;
}
/* Get the local time */
HalQueryRealTimeClock(&TimeFields);
RtlTimeFieldsToTime(&TimeFields,
&LocalTime);
/* FIXME: Calculate transition dates */
/* Update the local time zone information */
memcpy(&ExpTimeZoneInfo,
&TimeZoneInfo,
sizeof(TIME_ZONE_INFORMATION));
ExpTimeZoneBias.QuadPart =
((LONGLONG)(ExpTimeZoneInfo.Bias + ExpTimeZoneInfo.StandardBias)) * TICKSPERMINUTE;
ExpTimeZoneId = TIME_ZONE_ID_STANDARD;
/* Set the new time zone information */
SharedUserData->TimeZoneBias.High1Time = ExpTimeZoneBias.u.HighPart;
SharedUserData->TimeZoneBias.High2Time = ExpTimeZoneBias.u.HighPart;
SharedUserData->TimeZoneBias.LowPart = ExpTimeZoneBias.u.LowPart;
SharedUserData->TimeZoneId = ExpTimeZoneId;
/* Calculate the new system time */
ExLocalTimeToSystemTime(&LocalTime,
&NewSystemTime);
/* Set the new system time */
KiSetSystemTime(&NewSystemTime);
#endif
return STATUS_SUCCESS;
}
@ -91,7 +151,7 @@ NtSetSystemTime(IN PLARGE_INTEGER UnsafeNewSystemTime,
{
return Status;
}
if (UnsafeOldSystemTime != NULL)
{
KeQuerySystemTime(&OldSystemTime);
@ -153,10 +213,7 @@ ExLocalTimeToSystemTime (
)
{
SystemTime->QuadPart =
LocalTime->QuadPart;
#if 0
LocalTime->QuadPart + ExpTimeZoneBias.QuadPart;
#endif
}
@ -185,10 +242,7 @@ ExSystemTimeToLocalTime (
)
{
LocalTime->QuadPart =
SystemTime->QuadPart;
#if 0
SystemTime->QuadPart - ExpTimeZoneBias.QuadPart;
#endif
}
/* EOF */