91 lines
1.6 KiB
C
91 lines
1.6 KiB
C
/*
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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volume.c
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Abstract:
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This module contains the routines which manipulates time values and
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conversions.
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Author:
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Jameel Hyder (microsoft!jameelh)
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Revision History:
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25 Apr 1992 Initial Version
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Notes: Tab stop: 4
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--*/
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#define FILENUM FILE_TIME
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#include <afp.h>
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/*** AfpGetCurrentTimeInMacFormat
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*
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* This gets the current system time in macintosh format which is number of
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* seconds since ZERO hours on Jan 1, 2000. Time before this date is
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* negative time. (the time returned is the system local time)
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*/
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VOID
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AfpGetCurrentTimeInMacFormat(
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OUT AFPTIME * pMacTime
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)
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{
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TIME SystemTime;
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KeQuerySystemTime(&SystemTime);
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*pMacTime = AfpConvertTimeToMacFormat(&SystemTime);
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}
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/*** AfpConvertTimeToMacFormat
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*
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* Convert time in the host format i.e. # of 100ns since 1601 A.D. to
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* the macintosh time i.e. # of seconds since 2000 A.D. The system time
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* is in UTC. We need to first convert it to local time.
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*/
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AFPTIME
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AfpConvertTimeToMacFormat(
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IN PTIME pSystemTime
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)
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{
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AFPTIME MacTime;
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TIME LocalTime;
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// Convert this to number of seconds since 1980
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RtlTimeToSecondsSince1980(pSystemTime, (PULONG)&MacTime);
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MacTime -= SECONDS_FROM_1980_2000;
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return MacTime;
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}
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/*** AfpConvertTimeFromMacFormat
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*
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* Convert time in the macintosh time i.e. # of seconds since 2000 A.D. to
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* the host format i.e. # of 100ns since 1601 A.D. Convert from local time
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* to system time i.e UTC.
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*/
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VOID
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AfpConvertTimeFromMacFormat(
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IN AFPTIME MacTime,
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OUT PTIME pSystemTime
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)
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{
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TIME LocalTime;
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MacTime += SECONDS_FROM_1980_2000;
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RtlSecondsSince1980ToTime(MacTime, pSystemTime);
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}
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