314 lines
9.2 KiB
C
314 lines
9.2 KiB
C
/*
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* Win32 kernel functions
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*
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* Copyright 1995 Martin von Loewis and Cameron Heide
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*/
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/times.h>
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#include "file.h"
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#include "ntddk.h"
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#include "winerror.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(win32);
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/* maximum time adjustment in seconds for SetLocalTime and SetSystemTime */
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#define SETTIME_MAX_ADJUST 120
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/* TIME_GetBias: helper function calculates delta local time from UTC */
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static int TIME_GetBias( time_t utc, int *pdaylight)
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{
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struct tm *ptm = localtime(&utc);
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*pdaylight = ptm->tm_isdst; /* daylight for local timezone */
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ptm = gmtime(&utc);
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ptm->tm_isdst = *pdaylight; /* use local daylight, not that of Greenwich */
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return (int)(utc-mktime(ptm));
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}
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/***********************************************************************
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* SetLocalTime (KERNEL32.655)
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*
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* Sets the local time using current time zone and daylight
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* savings settings.
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*
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* RETURNS
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*
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* True if the time was set, false if the time was invalid or the
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* necessary permissions were not held.
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*/
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BOOL WINAPI SetLocalTime( const SYSTEMTIME *systime /* The desired local time. */ )
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{
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struct timeval tv;
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struct tm t;
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time_t sec;
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time_t oldsec=time(NULL);
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int err;
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/* get the number of seconds */
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t.tm_sec = systime->wSecond;
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t.tm_min = systime->wMinute;
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t.tm_hour = systime->wHour;
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t.tm_mday = systime->wDay;
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t.tm_mon = systime->wMonth - 1;
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t.tm_year = systime->wYear - 1900;
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t.tm_isdst = -1;
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sec = mktime (&t);
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/* set the new time */
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tv.tv_sec = sec;
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tv.tv_usec = systime->wMilliseconds * 1000;
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/* error and sanity check*/
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if( sec == (time_t)-1 || abs((int)(sec-oldsec)) > SETTIME_MAX_ADJUST ){
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err = 1;
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SetLastError(ERROR_INVALID_PARAMETER);
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} else {
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err=settimeofday(&tv, NULL); /* 0 is OK, -1 is error */
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if(err == 0)
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return TRUE;
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SetLastError(ERROR_PRIVILEGE_NOT_HELD);
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}
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ERR("Cannot set time to %d/%d/%d %d:%d:%d Time adjustment %ld %s\n",
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systime->wYear, systime->wMonth, systime->wDay, systime->wHour,
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systime->wMinute, systime->wSecond,
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sec-oldsec, err == -1 ? "No Permission" :
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sec==(time_t)-1 ? "" : "is too large." );
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return FALSE;
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}
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/***********************************************************************
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* GetSystemTimeAdjustment (KERNEL32.407)
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*
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* Indicates the period between clock interrupt and the amount the clock
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* is adjusted each interrupt so as to keep it insync with an external source.
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*
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* RETURNS
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*
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* Always returns true.
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*
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* BUGS
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*
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* Only the special case of disabled time adjustments is supported.
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* (also the signature is wrong it should have a return type of BOOL)
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*/
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DWORD WINAPI GetSystemTimeAdjustment(
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LPDWORD lpTimeAdjustment, /* The clock adjustment per interupt in 100's of nanoseconds. */
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LPDWORD lpTimeIncrement, /* The time between clock interupts in 100's of nanoseconds. */
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LPBOOL lpTimeAdjustmentDisabled /* The clock synchonisation has been disabled. */ )
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{
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*lpTimeAdjustment = 0;
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*lpTimeIncrement = 0;
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*lpTimeAdjustmentDisabled = TRUE;
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return TRUE;
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}
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/***********************************************************************
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* SetSystemTime (KERNEL32.665)
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*
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* Sets the system time (utc).
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*
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* RETURNS
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*
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* True if the time was set, false if the time was invalid or the
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* necessary permissions were not held.
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*/
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BOOL WINAPI SetSystemTime(
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const SYSTEMTIME *systime /* The desired system time. */)
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{
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struct timeval tv;
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struct timezone tz;
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struct tm t;
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time_t sec, oldsec;
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int dst, bias;
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int err;
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/* call gettimeofday to get the current timezone */
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gettimeofday(&tv, &tz);
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oldsec=tv.tv_sec;
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/* get delta local time from utc */
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bias=TIME_GetBias(oldsec,&dst);
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/* get the number of seconds */
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t.tm_sec = systime->wSecond;
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t.tm_min = systime->wMinute;
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t.tm_hour = systime->wHour;
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t.tm_mday = systime->wDay;
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t.tm_mon = systime->wMonth - 1;
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t.tm_year = systime->wYear - 1900;
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t.tm_isdst = dst;
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sec = mktime (&t);
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/* correct for timezone and daylight */
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sec += bias;
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/* set the new time */
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tv.tv_sec = sec;
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tv.tv_usec = systime->wMilliseconds * 1000;
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/* error and sanity check*/
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if( sec == (time_t)-1 || abs((int)(sec-oldsec)) > SETTIME_MAX_ADJUST ){
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err = 1;
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SetLastError(ERROR_INVALID_PARAMETER);
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} else {
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err=settimeofday(&tv, NULL); /* 0 is OK, -1 is error */
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if(err == 0)
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return TRUE;
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SetLastError(ERROR_PRIVILEGE_NOT_HELD);
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}
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ERR("Cannot set time to %d/%d/%d %d:%d:%d Time adjustment %ld %s\n",
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systime->wYear, systime->wMonth, systime->wDay, systime->wHour,
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systime->wMinute, systime->wSecond,
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sec-oldsec, err == -1 ? "No Permission" :
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sec==(time_t)-1 ? "" : "is too large." );
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return FALSE;
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}
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/***********************************************************************
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* GetTimeZoneInformation (KERNEL32.424)
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*
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* Fills in the a time zone information structure with values based on
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* the current local time.
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*
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* RETURNS
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*
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* The daylight savings time standard or TIME_ZONE_ID_INVALID if the call failed.
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*/
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DWORD WINAPI GetTimeZoneInformation(
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LPTIME_ZONE_INFORMATION tzinfo /* The time zone structure to be filled in. */)
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{
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time_t gmt;
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int bias, daylight;
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memset(tzinfo, 0, sizeof(TIME_ZONE_INFORMATION));
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gmt = time(NULL);
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bias=TIME_GetBias(gmt,&daylight);
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tzinfo->Bias = -bias / 60;
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tzinfo->StandardBias = 0;
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tzinfo->DaylightBias = -60;
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return TIME_ZONE_ID_STANDARD;
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}
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/***********************************************************************
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* SetTimeZoneInformation (KERNEL32.673)
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*
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* Set the local time zone with values based on the time zone structure.
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*
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* RETURNS
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*
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* True on successful setting of the time zone.
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*
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* BUGS
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*
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* Use the obsolete unix timezone structure and tz_dsttime member.
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*/
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BOOL WINAPI SetTimeZoneInformation(
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const LPTIME_ZONE_INFORMATION tzinfo /* The new time zone. */)
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{
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struct timezone tz;
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tz.tz_minuteswest = tzinfo->Bias;
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#ifdef DST_NONE
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tz.tz_dsttime = DST_NONE;
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#else
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tz.tz_dsttime = 0;
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#endif
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return !settimeofday(NULL, &tz);
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}
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/***********************************************************************
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* SystemTimeToTzSpecificLocalTime (KERNEL32.683)
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*
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* Converts the system time (utc) to the local time in the specified time zone.
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*
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* RETURNS
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*
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* Returns true when the local time was calculated.
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*
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* BUGS
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*
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* Does not handle daylight savings time adjustments correctly.
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*/
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BOOL WINAPI SystemTimeToTzSpecificLocalTime(
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LPTIME_ZONE_INFORMATION lpTimeZoneInformation, /* The desired time zone. */
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LPSYSTEMTIME lpUniversalTime, /* The utc time to base local time on. */
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LPSYSTEMTIME lpLocalTime /* The local time in the time zone. */)
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{
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FIXME(":stub\n");
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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/***********************************************************************
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* GetSystemTimeAsFileTime (KERNEL32.408)
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*
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* Fills in a file time structure with the current time in UTC format.
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*/
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VOID WINAPI GetSystemTimeAsFileTime(
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LPFILETIME time /* The file time struct to be filled with the system time. */)
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{
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NtQuerySystemTime( (LARGE_INTEGER *)time );
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}
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/*********************************************************************
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* TIME_ClockTimeToFileTime (olorin@fandra.org, 20-Sep-1998)
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*
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* Used by GetProcessTimes to convert clock_t into FILETIME.
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*
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* Differences to UnixTimeToFileTime:
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* 1) Divided by CLK_TCK
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* 2) Time is relative. There is no 'starting date', so there is
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* no need in offset correction, like in UnixTimeToFileTime
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*/
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static void TIME_ClockTimeToFileTime(clock_t unix_time, LPFILETIME filetime)
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{
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LONGLONG secs = RtlEnlargedUnsignedMultiply( unix_time, 10000000 );
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((LARGE_INTEGER *)filetime)->QuadPart = RtlExtendedLargeIntegerDivide( secs, CLK_TCK, NULL );
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}
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/*********************************************************************
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* GetProcessTimes (KERNEL32.378)
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*
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* Returns the user and kernel execution times of a process,
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* along with the creation and exit times if known.
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*
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* olorin@fandra.org:
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* Would be nice to subtract the cpu time, used by Wine at startup.
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* Also, there is a need to separate times used by different applications.
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*
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* RETURNS
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*
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* Always returns true.
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*
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* BUGS
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*
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* lpCreationTime, lpExitTime are NOT INITIALIZED.
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*/
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BOOL WINAPI GetProcessTimes(
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HANDLE hprocess, /* The process to be queried (obtained from PROCESS_QUERY_INFORMATION). */
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LPFILETIME lpCreationTime, /* The creation time of the process. */
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LPFILETIME lpExitTime, /* The exit time of the process if exited. */
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LPFILETIME lpKernelTime, /* The time spent in kernal routines in 100's of nanoseconds. */
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LPFILETIME lpUserTime /* The time spent in user routines in 100's of nanoseconds. */)
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{
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struct tms tms;
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times(&tms);
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TIME_ClockTimeToFileTime(tms.tms_utime,lpUserTime);
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TIME_ClockTimeToFileTime(tms.tms_stime,lpKernelTime);
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return TRUE;
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}
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