win32/time.c

   1 /*
   2  * Win32 kernel functions
   3  *
   4  * Copyright 1995 Martin von Loewis and Cameron Heide
   5  */
   6
   7 #include <string.h>
   8 #include <time.h>
   9 #include <sys/time.h>
  10 #include <unistd.h>
  11 #include "file.h"
  12 #include "windows.h"
  13 #include "winerror.h"
  14 #include "debug.h"
  15
  16 /***********************************************************************
  17  *              GetLocalTime            (KERNEL32.228)
  18  */
  19 VOID WINAPI GetLocalTime(LPSYSTEMTIME systime)
  20 {
  21     time_t local_time;
  22     struct tm *local_tm;
  23     struct timeval tv;
  24
  25     gettimeofday(&tv, NULL);
  26     local_time = tv.tv_sec;
  27     local_tm = localtime(&local_time);
  28
  29     systime->wYear = local_tm->tm_year + 1900;
  30     systime->wMonth = local_tm->tm_mon + 1;
  31     systime->wDayOfWeek = local_tm->tm_wday;
  32     systime->wDay = local_tm->tm_mday;
  33     systime->wHour = local_tm->tm_hour;
  34     systime->wMinute = local_tm->tm_min;
  35     systime->wSecond = local_tm->tm_sec;
  36     systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
  37 }
  38
  39 /***********************************************************************
  40  *              GetSystemTime            (KERNEL32.285)
  41  */
  42 VOID WINAPI GetSystemTime(LPSYSTEMTIME systime)
  43 {
  44     time_t local_time;
  45     struct tm *local_tm;
  46     struct timeval tv;
  47
  48     gettimeofday(&tv, NULL);
  49     local_time = tv.tv_sec;
  50     local_tm = gmtime(&local_time);
  51
  52     systime->wYear = local_tm->tm_year + 1900;
  53     systime->wMonth = local_tm->tm_mon + 1;
  54     systime->wDayOfWeek = local_tm->tm_wday;
  55     systime->wDay = local_tm->tm_mday;
  56     systime->wHour = local_tm->tm_hour;
  57     systime->wMinute = local_tm->tm_min;
  58     systime->wSecond = local_tm->tm_sec;
  59     systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
  60 }
  61
  62
  63 /***********************************************************************
  64  *              SetSystemTime            (KERNEL32.507)
  65  */
  66 BOOL32 WINAPI SetSystemTime(const SYSTEMTIME *systime)
  67 {
  68     struct timeval tv;
  69     struct timezone tz;
  70     struct tm t;
  71     time_t sec;
  72
  73     /* call gettimeofday to get the current timezone */
  74     gettimeofday(&tv, &tz);
  75
  76     /* get the number of seconds */
  77     t.tm_sec = systime->wSecond;
  78     t.tm_min = systime->wMinute;
  79     t.tm_hour = systime->wHour;
  80     t.tm_mday = systime->wDay;
  81     t.tm_mon = systime->wMonth;
  82     t.tm_year = systime->wYear;
  83     sec = mktime (&t);
  84
  85     /* set the new time */
  86     tv.tv_sec = sec;
  87     tv.tv_usec = systime->wMilliseconds * 1000;
  88     if (settimeofday(&tv, &tz))
  89     {
  90         return FALSE;
  91     }
  92     else
  93     {
  94         return TRUE;
  95     }
  96 }
  97
  98
  99 /***********************************************************************
 100  *              GetTimeZoneInformation  (KERNEL32.302)
 101  */
 102 DWORD WINAPI GetTimeZoneInformation(LPTIME_ZONE_INFORMATION tzinfo)
 103 {
 104     time_t gmt, lt;
 105
 106     memset(tzinfo, 0, sizeof(TIME_ZONE_INFORMATION));
 107
 108     gmt = time(NULL);
 109     lt = mktime(localtime(&gmt));
 110     tzinfo->Bias = (gmt - lt) / 60;
 111     tzinfo->StandardBias = 0;
 112     tzinfo->DaylightBias = -60;
 113
 114     return TIME_ZONE_ID_UNKNOWN;
 115 }
 116
 117
 118 /***********************************************************************
 119  *              SetTimeZoneInformation  (KERNEL32.515)
 120  */
 121 BOOL32 WINAPI SetTimeZoneInformation(const LPTIME_ZONE_INFORMATION tzinfo)
 122 {
 123     struct timezone tz;
 124
 125     tz.tz_minuteswest = tzinfo->Bias;
 126 #ifdef DST_NONE
 127     tz.tz_dsttime = DST_NONE;
 128 #else
 129     tz.tz_dsttime = 0;
 130 #endif
 131     return !settimeofday(NULL, &tz);
 132 }
 133
 134
 135 /***********************************************************************
 136  *              GetSystemTimeAsFileTime  (KERNEL32)
 137  */
 138 VOID WINAPI GetSystemTimeAsFileTime(LPFILETIME systemtimeAsfiletime) {
 139         DOSFS_UnixTimeToFileTime(time(NULL),systemtimeAsfiletime,0);
 140 }