Sweden-Number/win32/time.c

256 lines
7.2 KiB
C

/*
* Win32 kernel functions
*
* Copyright 1995 Martin von Loewis and Cameron Heide
*/
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include <unistd.h>
#include "file.h"
#include "winerror.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(win32)
/* maximum time adjustment in seconds for SetLocalTime and SetSystemTime */
#define SETTIME_MAX_ADJUST 120
/* TIME_GetBias: helper function calculates delta local time from UTC */
static int TIME_GetBias( time_t utc, int *pdaylight)
{
struct tm *ptm = localtime(&utc);
*pdaylight = ptm->tm_isdst; /* daylight for local timezone */
ptm = gmtime(&utc);
ptm->tm_isdst = *pdaylight; /* use local daylight, not that of Greenwich */
return (int)(utc-mktime(ptm));
}
/***********************************************************************
* GetLocalTime (KERNEL32.228)
*/
VOID WINAPI GetLocalTime(LPSYSTEMTIME systime)
{
time_t local_time;
struct tm *local_tm;
struct timeval tv;
gettimeofday(&tv, NULL);
local_time = tv.tv_sec;
local_tm = localtime(&local_time);
systime->wYear = local_tm->tm_year + 1900;
systime->wMonth = local_tm->tm_mon + 1;
systime->wDayOfWeek = local_tm->tm_wday;
systime->wDay = local_tm->tm_mday;
systime->wHour = local_tm->tm_hour;
systime->wMinute = local_tm->tm_min;
systime->wSecond = local_tm->tm_sec;
systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
}
/***********************************************************************
* SetLocalTime (KERNEL32.655)
*
* FIXME: correct ? Is the timezone param of settimeofday() needed ?
* I don't have any docu about SetLocal/SystemTime(), argl...
*/
BOOL WINAPI SetLocalTime(const SYSTEMTIME *systime)
{
struct timeval tv;
struct tm t;
time_t sec;
time_t oldsec=time(NULL);
int err;
/* get the number of seconds */
t.tm_sec = systime->wSecond;
t.tm_min = systime->wMinute;
t.tm_hour = systime->wHour;
t.tm_mday = systime->wDay;
t.tm_mon = systime->wMonth - 1;
t.tm_year = systime->wYear - 1900;
t.tm_isdst = -1;
sec = mktime (&t);
/* set the new time */
tv.tv_sec = sec;
tv.tv_usec = systime->wMilliseconds * 1000;
/* error and sanity check*/
if( sec == (time_t)-1 || abs((int)(sec-oldsec)) > SETTIME_MAX_ADJUST ){
err = 1;
SetLastError(ERROR_INVALID_PARAMETER);
} else {
err=settimeofday(&tv, NULL); /* 0 is OK, -1 is error */
if(err == 0)
return TRUE;
SetLastError(ERROR_PRIVILEGE_NOT_HELD);
}
ERR("Cannot set time to %d/%d/%d %d:%d:%d Time adjustment %ld %s\n",
systime->wYear, systime->wMonth, systime->wDay, systime->wHour,
systime->wMinute, systime->wSecond,
sec-oldsec, err == -1 ? "No Permission" :
sec==(time_t)-1 ? "" : "is too large." );
return FALSE;
}
/***********************************************************************
* GetSystemTimeAdjustment (KERNEL32.407)
*
*/
DWORD WINAPI GetSystemTimeAdjustment( LPDWORD lpTimeAdjustment,
LPDWORD lpTimeIncrement,
LPBOOL lpTimeAdjustmentDisabled )
{
*lpTimeAdjustment = 0;
*lpTimeIncrement = 0;
*lpTimeAdjustmentDisabled = TRUE;
return TRUE;
}
/***********************************************************************
* GetSystemTime (KERNEL32.285)
*/
VOID WINAPI GetSystemTime(LPSYSTEMTIME systime)
{
time_t local_time;
struct tm *local_tm;
struct timeval tv;
gettimeofday(&tv, NULL);
local_time = tv.tv_sec;
local_tm = gmtime(&local_time);
systime->wYear = local_tm->tm_year + 1900;
systime->wMonth = local_tm->tm_mon + 1;
systime->wDayOfWeek = local_tm->tm_wday;
systime->wDay = local_tm->tm_mday;
systime->wHour = local_tm->tm_hour;
systime->wMinute = local_tm->tm_min;
systime->wSecond = local_tm->tm_sec;
systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
}
/***********************************************************************
* SetSystemTime (KERNEL32.507)
*/
BOOL WINAPI SetSystemTime(const SYSTEMTIME *systime)
{
struct timeval tv;
struct timezone tz;
struct tm t;
time_t sec, oldsec;
int dst, bias;
int err;
/* call gettimeofday to get the current timezone */
gettimeofday(&tv, &tz);
oldsec=tv.tv_sec;
/* get delta local time from utc */
bias=TIME_GetBias(oldsec,&dst);
/* get the number of seconds */
t.tm_sec = systime->wSecond;
t.tm_min = systime->wMinute;
t.tm_hour = systime->wHour;
t.tm_mday = systime->wDay;
t.tm_mon = systime->wMonth - 1;
t.tm_year = systime->wYear - 1900;
t.tm_isdst = dst;
sec = mktime (&t);
/* correct for timezone and daylight */
sec += bias;
/* set the new time */
tv.tv_sec = sec;
tv.tv_usec = systime->wMilliseconds * 1000;
/* error and sanity check*/
if( sec == (time_t)-1 || abs((int)(sec-oldsec)) > SETTIME_MAX_ADJUST ){
err = 1;
SetLastError(ERROR_INVALID_PARAMETER);
} else {
err=settimeofday(&tv, NULL); /* 0 is OK, -1 is error */
if(err == 0)
return TRUE;
SetLastError(ERROR_PRIVILEGE_NOT_HELD);
}
ERR("Cannot set time to %d/%d/%d %d:%d:%d Time adjustment %ld %s\n",
systime->wYear, systime->wMonth, systime->wDay, systime->wHour,
systime->wMinute, systime->wSecond,
sec-oldsec, err == -1 ? "No Permission" :
sec==(time_t)-1 ? "" : "is too large." );
return FALSE;
}
/***********************************************************************
* GetTimeZoneInformation (KERNEL32.302)
*/
DWORD WINAPI GetTimeZoneInformation(LPTIME_ZONE_INFORMATION tzinfo)
{
time_t gmt;
int bias, daylight;
memset(tzinfo, 0, sizeof(TIME_ZONE_INFORMATION));
gmt = time(NULL);
bias=TIME_GetBias(gmt,&daylight);
tzinfo->Bias = -bias / 60;
tzinfo->StandardBias = 0;
tzinfo->DaylightBias = -60;
return TIME_ZONE_ID_UNKNOWN;
}
/***********************************************************************
* SetTimeZoneInformation (KERNEL32.515)
*/
BOOL WINAPI SetTimeZoneInformation(const LPTIME_ZONE_INFORMATION tzinfo)
{
struct timezone tz;
tz.tz_minuteswest = tzinfo->Bias;
#ifdef DST_NONE
tz.tz_dsttime = DST_NONE;
#else
tz.tz_dsttime = 0;
#endif
return !settimeofday(NULL, &tz);
}
/***********************************************************************
* GetSystemTimeAsFileTime (KERNEL32)
*/
VOID WINAPI GetSystemTimeAsFileTime(LPFILETIME systemtimeAsfiletime)
{
struct timeval now;
gettimeofday( &now, 0 );
/* FIXME: convert to UTC */
DOSFS_UnixTimeToFileTime( now.tv_sec, systemtimeAsfiletime, now.tv_usec * 10 );
}
/***********************************************************************
* SystemTimeToTzSpecificLocalTime (KERNEL32.683)
*/
BOOL WINAPI SystemTimeToTzSpecificLocalTime(
LPTIME_ZONE_INFORMATION lpTimeZoneInformation,
LPSYSTEMTIME lpUniversalTime,
LPSYSTEMTIME lpLocalTime) {
FIXME(":stub\n");
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}