256 lines
7.2 KiB
C
256 lines
7.2 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 <time.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include "file.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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* GetLocalTime (KERNEL32.228)
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*/
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VOID WINAPI GetLocalTime(LPSYSTEMTIME systime)
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{
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time_t local_time;
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struct tm *local_tm;
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struct timeval tv;
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gettimeofday(&tv, NULL);
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local_time = tv.tv_sec;
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local_tm = localtime(&local_time);
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systime->wYear = local_tm->tm_year + 1900;
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systime->wMonth = local_tm->tm_mon + 1;
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systime->wDayOfWeek = local_tm->tm_wday;
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systime->wDay = local_tm->tm_mday;
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systime->wHour = local_tm->tm_hour;
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systime->wMinute = local_tm->tm_min;
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systime->wSecond = local_tm->tm_sec;
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systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
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}
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/***********************************************************************
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* SetLocalTime (KERNEL32.655)
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*
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* FIXME: correct ? Is the timezone param of settimeofday() needed ?
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* I don't have any docu about SetLocal/SystemTime(), argl...
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*/
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BOOL WINAPI SetLocalTime(const SYSTEMTIME *systime)
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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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*/
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DWORD WINAPI GetSystemTimeAdjustment( LPDWORD lpTimeAdjustment,
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LPDWORD lpTimeIncrement,
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LPBOOL lpTimeAdjustmentDisabled )
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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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* GetSystemTime (KERNEL32.285)
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*/
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VOID WINAPI GetSystemTime(LPSYSTEMTIME systime)
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{
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time_t local_time;
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struct tm *local_tm;
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struct timeval tv;
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gettimeofday(&tv, NULL);
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local_time = tv.tv_sec;
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local_tm = gmtime(&local_time);
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systime->wYear = local_tm->tm_year + 1900;
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systime->wMonth = local_tm->tm_mon + 1;
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systime->wDayOfWeek = local_tm->tm_wday;
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systime->wDay = local_tm->tm_mday;
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systime->wHour = local_tm->tm_hour;
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systime->wMinute = local_tm->tm_min;
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systime->wSecond = local_tm->tm_sec;
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systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
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}
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/***********************************************************************
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* SetSystemTime (KERNEL32.507)
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*/
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BOOL WINAPI SetSystemTime(const SYSTEMTIME *systime)
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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 (KERNEL32.302)
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*/
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DWORD WINAPI GetTimeZoneInformation(LPTIME_ZONE_INFORMATION tzinfo)
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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_UNKNOWN;
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}
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/***********************************************************************
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* SetTimeZoneInformation (KERNEL32.515)
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*/
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BOOL WINAPI SetTimeZoneInformation(const LPTIME_ZONE_INFORMATION tzinfo)
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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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* GetSystemTimeAsFileTime (KERNEL32)
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*/
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VOID WINAPI GetSystemTimeAsFileTime(LPFILETIME systemtimeAsfiletime)
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{
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struct timeval now;
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gettimeofday( &now, 0 );
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/* FIXME: convert to UTC */
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DOSFS_UnixTimeToFileTime( now.tv_sec, systemtimeAsfiletime, now.tv_usec * 10 );
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}
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/***********************************************************************
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* SystemTimeToTzSpecificLocalTime (KERNEL32.683)
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*/
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BOOL WINAPI SystemTimeToTzSpecificLocalTime(
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LPTIME_ZONE_INFORMATION lpTimeZoneInformation,
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LPSYSTEMTIME lpUniversalTime,
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LPSYSTEMTIME lpLocalTime) {
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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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