4 * RtlTimeToTimeFields, RtlTimeFieldsToTime and defines are taken from ReactOS and
5 * adapted to wine with special permissions of the author. This code is
6 * Copyright 2002 Rex Jolliff (rex@lvcablemodem.com)
8 * Copyright 1999 Juergen Schmied
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include "wine/port.h"
32 #ifdef HAVE_SYS_TIME_H
33 # include <sys/time.h>
39 #define NONAMELESSUNION
40 #define NONAMELESSSTRUCT
45 #include "wine/unicode.h"
46 #include "wine/debug.h"
47 #include "ntdll_misc.h"
49 WINE_DEFAULT_DEBUG_CHANNEL(ntdll
);
51 static CRITICAL_SECTION TIME_GetBias_section
;
52 static CRITICAL_SECTION_DEBUG critsect_debug
=
54 0, 0, &TIME_GetBias_section
,
55 { &critsect_debug
.ProcessLocksList
, &critsect_debug
.ProcessLocksList
},
56 0, 0, { 0, (DWORD
)(__FILE__
": TIME_GetBias_section") }
58 static CRITICAL_SECTION TIME_GetBias_section
= { &critsect_debug
, -1, 0, 0, 0, 0 };
61 #define SETTIME_MAX_ADJUST 120
63 /* This structure is used to store strings that represent all of the time zones
64 * in the world. (This is used to help GetTimeZoneInformation)
68 const char *psTZFromUnix
;
69 WCHAR psTZWindows
[32];
74 static const struct tagTZ_INFO TZ_INFO
[] =
77 {'D','a','t','e','l','i','n','e',' ','S','t','a','n','d','a','r','d',' ',
78 'T','i','m','e','\0'}, -720, 0},
80 {'S','a','m','o','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
83 {'H','a','w','a','i','i','a','n',' ','S','t','a','n','d','a','r','d',' ',
84 'T','i','m','e','\0'}, 600, 0},
86 {'A','l','a','s','k','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
87 'i','m','e','\0'}, 480, 1},
89 {'P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r','d',' ','T',
90 'i','m','e','\0'}, 420, 1},
92 {'U','S',' ','M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a',
93 'r','d',' ','T','i','m','e','\0'}, 420, 0},
95 {'M','o','u','n','t','a','i','n',' ','S','t','a','n','d','a','r','d',' ',
96 'T','i','m','e','\0'}, 360, 1},
98 {'C','e','n','t','r','a','l',' ','A','m','e','r','i','c','a',' ','S','t',
99 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, 360, 0},
101 {'C','e','n','t','r','a','l',' ','S','t','a','n','d','a','r','d',' ','T',
102 'i','m','e','\0'}, 300, 1},
104 {'S','A',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d','a','r',
105 'd',' ','T','i','m','e','\0'}, 300, 0},
107 {'E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r','d',' ','T',
108 'i','m','e','\0'}, 240, 1},
110 {'U','S',' ','E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r',
111 'd',' ','T','i','m','e','\0'}, 300, 0},
113 {'A','t','l','a','n','t','i','c',' ','S','t','a','n','d','a','r','d',' ',
114 'T','i','m','e','\0'}, 180, 1},
116 {'S','A',' ','W','e','s','t','e','r','n',' ','S','t','a','n','d','a','r',
117 'd',' ','T','i','m','e','\0'}, 240, 0},
119 {'P','a','c','i','f','i','c',' ','S','A',' ','S','t','a','n','d','a','r',
120 'd',' ','T','i','m','e','\0'}, 240, 0},
122 {'N','e','w','f','o','u','n','d','l','a','n','d',' ','S','t','a','n','d',
123 'a','r','d',' ','T','i','m','e','\0'}, 150, 1},
125 {'E','.',' ','S','o','u','t','h',' ','A','m','e','r','i','c','a',' ','S',
126 't','a','n','d','a','r','d',' ','T','i','m','e','\0'}, 180, 0},
128 {'S','A',' ','E','a','s','t','e','r','n',' ','S','t','a','n','d','a','r',
129 'd',' ','T','i','m','e','\0'}, 180, 0},
131 {'G','r','e','e','n','l','a','n','d',' ','S','t','a','n','d','a','r','d',
132 ' ','T','i','m','e','\0'}, 120, 1},
134 {'M','i','d','-','A','t','l','a','n','t','i','c',' ','S','t','a','n','d',
135 'a','r','d',' ','T','i','m','e','\0'}, 120, 0},
137 {'A','z','o','r','e','s',' ','S','t','a','n','d','a','r','d',' ','T','i',
138 'm','e','\0'}, 0, 1},
140 {'C','a','p','e',' ','V','e','r','d','e',' ','S','t','a','n','d','a','r',
141 'd',' ','T','i','m','e','\0'}, 60, 0},
143 {'G','r','e','e','n','w','i','c','h',' ','S','t','a','n','d','a','r','d',
144 ' ','T','i','m','e','\0'}, 0, 0},
146 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
149 {'G','M','T',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'},
152 {'C','e','n','t','r','a','l',' ','E','u','r','o','p','e',' ','S','t','a',
153 'n','d','a','r','d',' ','T','i','m','e','\0'}, -120, 1},
155 {'W','.',' ','C','e','n','t','r','a','l',' ','A','f','r','i','c','a',' ',
156 'S','t','a','n','d','a','r','d',' ','T','i','m','e','\0'}, -60, 0},
158 {'E','.',' ','E','u','r','o','p','e',' ','S','t','a','n','d','a','r','d',
159 ' ','T','i','m','e','\0'}, -180, 1},
161 {'E','g','y','p','t',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
164 {'S','o','u','t','h',' ','A','f','r','i','c','a',' ','S','t','a','n','d',
165 'a','r','d',' ','T','i','m','e','\0'}, -120, 0},
167 {'I','s','r','a','e','l',' ','S','t','a','n','d','a','r','d',' ','T','i',
168 'm','e','\0'}, -120, 0},
170 {'A','r','a','b','i','c',' ','S','t','a','n','d','a','r','d',' ','T','i',
171 'm','e','\0'}, -240, 1},
173 {'A','r','a','b',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
176 {'R','u','s','s','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
177 'i','m','e','\0'}, -240, 1},
179 {'E','.',' ','A','f','r','i','c','a',' ','S','t','a','n','d','a','r','d',
180 ' ','T','i','m','e','\0'}, -180, 0},
182 {'I','r','a','n',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
185 {'A','r','a','b','i','a','n',' ','S','t','a','n','d','a','r','d',' ','T',
186 'i','m','e','\0'}, -240, 0},
188 {'C','a','u','c','a','s','u','s',' ','S','t','a','n','d','a','r','d',' ',
189 'T','i','m','e','\0'}, -300, 1},
191 {'A','f','g','h','a','n','i','s','t','a','n',' ','S','t','a','n','d','a',
192 'r','d',' ','T','i','m','e','\0'}, -270, 0},
194 {'E','k','a','t','e','r','i','n','b','u','r','g',' ','S','t','a','n','d',
195 'a','r','d',' ','T','i','m','e','\0'}, -360, 1},
197 {'W','e','s','t',' ','A','s','i','a',' ','S','t','a','n','d','a','r','d',
198 ' ','T','i','m','e','\0'}, -300, 0},
200 {'I','n','d','i','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
203 {'N','e','p','a','l',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
206 {'N','.',' ','C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t',
207 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -420, 1},
209 {'C','e','n','t','r','a','l',' ','A','s','i','a',' ','S','t','a','n','d',
210 'a','r','d',' ','T','i','m','e','\0'}, -360, 0},
212 {'S','r','i',' ','L','a','n','k','a',' ','S','t','a','n','d','a','r','d',
213 ' ','T','i','m','e','\0'}, -360, 0},
215 {'M','y','a','n','m','a','r',' ','S','t','a','n','d','a','r','d',' ','T',
216 'i','m','e','\0'}, -390, 0},
218 {'S','E',' ','A','s','i','a',' ','S','t','a','n','d','a','r','d',' ','T',
219 'i','m','e','\0'}, -420, 0},
221 {'N','o','r','t','h',' ','A','s','i','a',' ','S','t','a','n','d','a','r',
222 'd',' ','T','i','m','e','\0'}, -480, 1},
224 {'C','h','i','n','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
227 {'N','o','r','t','h',' ','A','s','i','a',' ','E','a','s','t',' ','S','t',
228 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -540, 1},
230 {'M','a','l','a','y',' ','P','e','n','i','n','s','u','l','a',' ','S','t',
231 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -480, 0},
233 {'W','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
234 'a','r','d',' ','T','i','m','e','\0'}, -480, 0},
236 {'T','o','k','y','o',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
239 {'K','o','r','e','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
242 {'Y','a','k','u','t','s','k',' ','S','t','a','n','d','a','r','d',' ','T',
243 'i','m','e','\0'}, -600, 1},
245 {'C','e','n','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a',
246 'n','d','a','r','d',' ','T','i','m','e','\0'}, -570, 0},
248 {'E','.',' ','A','u','s','t','r','a','l','i','a',' ','S','t','a','n','d',
249 'a','r','d',' ','T','i','m','e','\0'}, -600, 0},
251 {'W','e','s','t',' ','P','a','c','i','f','i','c',' ','S','t','a','n','d',
252 'a','r','d',' ','T','i','m','e','\0'}, -600, 0},
254 {'V','l','a','d','i','v','o','s','t','o','k',' ','S','t','a','n','d','a',
255 'r','d',' ','T','i','m','e','\0'}, -660, 1},
257 {'C','e','n','t','r','a','l',' ','P','a','c','i','f','i','c',' ','S','t',
258 'a','n','d','a','r','d',' ','T','i','m','e','\0'}, -720, 1},
260 {'N','e','w',' ','Z','e','a','l','a','n','d',' ','S','t','a','n','d','a',
261 'r','d',' ','T','i','m','e','\0'}, -720, 0},
263 {'F','i','j','i',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',
266 {'T','o','n','g','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m',
270 #define TICKSPERSEC 10000000
271 #define TICKSPERMSEC 10000
272 #define SECSPERDAY 86400
273 #define SECSPERHOUR 3600
274 #define SECSPERMIN 60
275 #define MINSPERHOUR 60
276 #define HOURSPERDAY 24
277 #define EPOCHWEEKDAY 1 /* Jan 1, 1601 was Monday */
278 #define DAYSPERWEEK 7
279 #define EPOCHYEAR 1601
280 #define DAYSPERNORMALYEAR 365
281 #define DAYSPERLEAPYEAR 366
282 #define MONSPERYEAR 12
283 #define DAYSPERQUADRICENTENNIUM (365 * 400 + 97)
284 #define DAYSPERNORMALCENTURY (365 * 100 + 24)
285 #define DAYSPERNORMALQUADRENNIUM (365 * 4 + 1)
287 /* 1601 to 1970 is 369 years plus 89 leap days */
288 #define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
289 #define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
290 /* 1601 to 1980 is 379 years plus 91 leap days */
291 #define SECS_1601_TO_1980 ((379 * 365 + 91) * (ULONGLONG)SECSPERDAY)
292 #define TICKS_1601_TO_1980 (SECS_1601_TO_1980 * TICKSPERSEC)
295 static const int MonthLengths
[2][MONSPERYEAR
] =
297 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
298 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
301 static const int YearDays
[2][MONSPERYEAR
+1] =
303 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
304 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
307 static inline int IsLeapYear(int Year
)
309 return Year
% 4 == 0 && (Year
% 100 != 0 || Year
% 400 == 0) ? 1 : 0;
312 static inline void NormalizeTimeFields(CSHORT
*FieldToNormalize
, CSHORT
*CarryField
,int Modulus
)
314 *FieldToNormalize
= (CSHORT
) (*FieldToNormalize
- Modulus
);
315 *CarryField
= (CSHORT
) (*CarryField
+ 1);
318 /***********************************************************************
319 * NTDLL_get_server_timeout
321 * Convert a NTDLL timeout into a timeval struct to send to the server.
323 void NTDLL_get_server_timeout( abs_time_t
*when
, const LARGE_INTEGER
*timeout
)
327 if (!timeout
) /* infinite timeout */
329 when
->sec
= when
->usec
= 0;
331 else if (timeout
->QuadPart
<= 0) /* relative timeout */
334 ULONG sec
= RtlEnlargedUnsignedDivide( -timeout
->QuadPart
, TICKSPERSEC
, &remainder
);
335 gettimeofday( &tv
, 0 );
336 when
->sec
= tv
.tv_sec
+ sec
;
337 if ((when
->usec
= tv
.tv_usec
+ (remainder
/ 10)) >= 1000000)
339 when
->usec
-= 1000000;
343 else /* absolute time */
345 when
->sec
= RtlEnlargedUnsignedDivide( timeout
->QuadPart
- TICKS_1601_TO_1970
,
346 TICKSPERSEC
, &remainder
);
347 when
->usec
= remainder
/ 10;
352 /******************************************************************************
353 * RtlTimeToTimeFields [NTDLL.@]
355 * Convert a time into a TIME_FIELDS structure.
358 * liTime [I] Time to convert.
359 * TimeFields [O] Destination for the converted time.
364 VOID WINAPI
RtlTimeToTimeFields(
365 const LARGE_INTEGER
*liTime
,
366 PTIME_FIELDS TimeFields
)
368 int SecondsInDay
, DeltaYear
;
369 int LeapYear
, CurMonth
;
371 LONGLONG Time
= liTime
->QuadPart
;
373 /* Extract millisecond from time and convert time into seconds */
374 TimeFields
->Milliseconds
= (CSHORT
) ((Time
% TICKSPERSEC
) / TICKSPERMSEC
);
375 Time
= Time
/ TICKSPERSEC
;
377 /* The native version of RtlTimeToTimeFields does not take leap seconds
380 /* Split the time into days and seconds within the day */
381 Days
= Time
/ SECSPERDAY
;
382 SecondsInDay
= Time
% SECSPERDAY
;
384 /* compute time of day */
385 TimeFields
->Hour
= (CSHORT
) (SecondsInDay
/ SECSPERHOUR
);
386 SecondsInDay
= SecondsInDay
% SECSPERHOUR
;
387 TimeFields
->Minute
= (CSHORT
) (SecondsInDay
/ SECSPERMIN
);
388 TimeFields
->Second
= (CSHORT
) (SecondsInDay
% SECSPERMIN
);
390 /* compute day of week */
391 TimeFields
->Weekday
= (CSHORT
) ((EPOCHWEEKDAY
+ Days
) % DAYSPERWEEK
);
394 /* FIXME: handle calendar modifications */
395 TimeFields
->Year
= EPOCHYEAR
;
396 DeltaYear
= Days
/ DAYSPERQUADRICENTENNIUM
;
397 TimeFields
->Year
+= DeltaYear
* 400;
398 Days
-= DeltaYear
* DAYSPERQUADRICENTENNIUM
;
399 DeltaYear
= Days
/ DAYSPERNORMALCENTURY
;
400 TimeFields
->Year
+= DeltaYear
* 100;
401 Days
-= DeltaYear
* DAYSPERNORMALCENTURY
;
402 DeltaYear
= Days
/ DAYSPERNORMALQUADRENNIUM
;
403 TimeFields
->Year
+= DeltaYear
* 4;
404 Days
-= DeltaYear
* DAYSPERNORMALQUADRENNIUM
;
405 DeltaYear
= Days
/ DAYSPERNORMALYEAR
;
406 TimeFields
->Year
+= DeltaYear
;
407 Days
-= DeltaYear
* DAYSPERNORMALYEAR
;
409 LeapYear
= IsLeapYear(TimeFields
->Year
);
411 /* Compute month of year */
413 while (Days
>= YearDays
[LeapYear
][CurMonth
]) CurMonth
++;
414 TimeFields
->Day
= Days
- YearDays
[LeapYear
][CurMonth
-1] + 1;
415 TimeFields
->Month
= CurMonth
;
418 /******************************************************************************
419 * RtlTimeFieldsToTime [NTDLL.@]
421 * Convert a TIME_FIELDS structure into a time.
424 * ftTimeFields [I] TIME_FIELDS structure to convert.
425 * Time [O] Destination for the converted time.
431 BOOLEAN WINAPI
RtlTimeFieldsToTime(
432 PTIME_FIELDS tfTimeFields
,
435 int CurYear
, DeltaYear
;
437 TIME_FIELDS TimeFields
= *tfTimeFields
;
441 /* FIXME: normalize the TIME_FIELDS structure here */
442 while (TimeFields
.Second
>= SECSPERMIN
)
443 { NormalizeTimeFields(&TimeFields
.Second
, &TimeFields
.Minute
, SECSPERMIN
);
445 while (TimeFields
.Minute
>= MINSPERHOUR
)
446 { NormalizeTimeFields(&TimeFields
.Minute
, &TimeFields
.Hour
, MINSPERHOUR
);
448 while (TimeFields
.Hour
>= HOURSPERDAY
)
449 { NormalizeTimeFields(&TimeFields
.Hour
, &TimeFields
.Day
, HOURSPERDAY
);
451 while (TimeFields
.Day
> MonthLengths
[IsLeapYear(TimeFields
.Year
)][TimeFields
.Month
- 1])
452 { NormalizeTimeFields(&TimeFields
.Day
, &TimeFields
.Month
,
453 MonthLengths
[IsLeapYear(TimeFields
.Year
)][TimeFields
.Month
- 1]);
455 while (TimeFields
.Month
> MONSPERYEAR
)
456 { NormalizeTimeFields(&TimeFields
.Month
, &TimeFields
.Year
, MONSPERYEAR
);
459 /* FIXME: handle calendar corrections here */
460 CurYear
= TimeFields
.Year
- EPOCHYEAR
;
461 DeltaYear
= CurYear
/ 400;
462 CurYear
-= DeltaYear
* 400;
463 rcTime
+= DeltaYear
* DAYSPERQUADRICENTENNIUM
;
464 DeltaYear
= CurYear
/ 100;
465 CurYear
-= DeltaYear
* 100;
466 rcTime
+= DeltaYear
* DAYSPERNORMALCENTURY
;
467 DeltaYear
= CurYear
/ 4;
468 CurYear
-= DeltaYear
* 4;
469 rcTime
+= DeltaYear
* DAYSPERNORMALQUADRENNIUM
;
470 rcTime
+= CurYear
* DAYSPERNORMALYEAR
;
471 rcTime
+= YearDays
[IsLeapYear(TimeFields
.Year
)][TimeFields
.Month
- 1];
472 rcTime
+= TimeFields
.Day
- 1;
473 rcTime
*= SECSPERDAY
;
474 rcTime
+= TimeFields
.Hour
* SECSPERHOUR
+ TimeFields
.Minute
* SECSPERMIN
+ TimeFields
.Second
;
475 rcTime
*= TICKSPERSEC
;
476 rcTime
+= TimeFields
.Milliseconds
* TICKSPERMSEC
;
477 Time
->QuadPart
= rcTime
;
482 /***********************************************************************
483 * TIME_GetBias [internal]
485 * Helper function calculates delta local time from UTC.
488 * utc [I] The current utc time.
489 * pdaylight [I] Local daylight.
492 * The bias for the current timezone.
494 static int TIME_GetBias(time_t utc
, int *pdaylight
)
497 static time_t last_utc
;
498 static int last_bias
;
499 static int last_daylight
;
502 RtlEnterCriticalSection( &TIME_GetBias_section
);
505 *pdaylight
= last_daylight
;
509 ptm
= localtime(&utc
);
510 *pdaylight
= last_daylight
=
511 ptm
->tm_isdst
; /* daylight for local timezone */
513 ptm
->tm_isdst
= *pdaylight
; /* use local daylight, not that of Greenwich */
515 ret
= last_bias
= (int)(utc
-mktime(ptm
));
517 RtlLeaveCriticalSection( &TIME_GetBias_section
);
521 /******************************************************************************
522 * RtlLocalTimeToSystemTime [NTDLL.@]
524 * Convert a local time into system time.
527 * LocalTime [I] Local time to convert.
528 * SystemTime [O] Destination for the converted time.
531 * Success: STATUS_SUCCESS.
532 * Failure: An NTSTATUS error code indicating the problem.
534 NTSTATUS WINAPI
RtlLocalTimeToSystemTime( const LARGE_INTEGER
*LocalTime
,
535 PLARGE_INTEGER SystemTime
)
540 TRACE("(%p, %p)\n", LocalTime
, SystemTime
);
543 bias
= TIME_GetBias(gmt
, &daylight
);
545 SystemTime
->QuadPart
= LocalTime
->QuadPart
- bias
* (LONGLONG
)10000000;
546 return STATUS_SUCCESS
;
549 /******************************************************************************
550 * RtlSystemTimeToLocalTime [NTDLL.@]
552 * Convert a system time into a local time.
555 * SystemTime [I] System time to convert.
556 * LocalTime [O] Destination for the converted time.
559 * Success: STATUS_SUCCESS.
560 * Failure: An NTSTATUS error code indicating the problem.
562 NTSTATUS WINAPI
RtlSystemTimeToLocalTime( const LARGE_INTEGER
*SystemTime
,
563 PLARGE_INTEGER LocalTime
)
568 TRACE("(%p, %p)\n", SystemTime
, LocalTime
);
571 bias
= TIME_GetBias(gmt
, &daylight
);
573 LocalTime
->QuadPart
= SystemTime
->QuadPart
+ bias
* (LONGLONG
)10000000;
574 return STATUS_SUCCESS
;
577 /******************************************************************************
578 * RtlTimeToSecondsSince1970 [NTDLL.@]
580 * Convert a time into a count of seconds since 1970.
583 * Time [I] Time to convert.
584 * Seconds [O] Destination for the converted time.
588 * Failure: FALSE, if the resulting value will not fit in a DWORD.
590 BOOLEAN WINAPI
RtlTimeToSecondsSince1970( const LARGE_INTEGER
*Time
, LPDWORD Seconds
)
592 ULONGLONG tmp
= ((ULONGLONG
)Time
->u
.HighPart
<< 32) | Time
->u
.LowPart
;
593 tmp
= RtlLargeIntegerDivide( tmp
, 10000000, NULL
);
594 tmp
-= SECS_1601_TO_1970
;
595 if (tmp
> 0xffffffff) return FALSE
;
596 *Seconds
= (DWORD
)tmp
;
600 /******************************************************************************
601 * RtlTimeToSecondsSince1980 [NTDLL.@]
603 * Convert a time into a count of seconds since 1980.
606 * Time [I] Time to convert.
607 * Seconds [O] Destination for the converted time.
611 * Failure: FALSE, if the resulting value will not fit in a DWORD.
613 BOOLEAN WINAPI
RtlTimeToSecondsSince1980( const LARGE_INTEGER
*Time
, LPDWORD Seconds
)
615 ULONGLONG tmp
= ((ULONGLONG
)Time
->u
.HighPart
<< 32) | Time
->u
.LowPart
;
616 tmp
= RtlLargeIntegerDivide( tmp
, 10000000, NULL
);
617 tmp
-= SECS_1601_TO_1980
;
618 if (tmp
> 0xffffffff) return FALSE
;
619 *Seconds
= (DWORD
)tmp
;
623 /******************************************************************************
624 * RtlSecondsSince1970ToTime [NTDLL.@]
626 * Convert a count of seconds since 1970 to a time.
629 * Seconds [I] Time to convert.
630 * Time [O] Destination for the converted time.
635 void WINAPI
RtlSecondsSince1970ToTime( DWORD Seconds
, LARGE_INTEGER
*Time
)
637 ULONGLONG secs
= Seconds
* (ULONGLONG
)TICKSPERSEC
+ TICKS_1601_TO_1970
;
638 Time
->u
.LowPart
= (DWORD
)secs
;
639 Time
->u
.HighPart
= (DWORD
)(secs
>> 32);
642 /******************************************************************************
643 * RtlSecondsSince1980ToTime [NTDLL.@]
645 * Convert a count of seconds since 1980 to a time.
648 * Seconds [I] Time to convert.
649 * Time [O] Destination for the converted time.
654 void WINAPI
RtlSecondsSince1980ToTime( DWORD Seconds
, LARGE_INTEGER
*Time
)
656 ULONGLONG secs
= Seconds
* (ULONGLONG
)TICKSPERSEC
+ TICKS_1601_TO_1980
;
657 Time
->u
.LowPart
= (DWORD
)secs
;
658 Time
->u
.HighPart
= (DWORD
)(secs
>> 32);
661 /******************************************************************************
662 * RtlTimeToElapsedTimeFields [NTDLL.@]
664 * Convert a time to a count of elapsed seconds.
667 * Time [I] Time to convert.
668 * TimeFields [O] Destination for the converted time.
673 void WINAPI
RtlTimeToElapsedTimeFields( const LARGE_INTEGER
*Time
, PTIME_FIELDS TimeFields
)
678 time
= RtlExtendedLargeIntegerDivide( Time
->QuadPart
, TICKSPERSEC
, &rem
);
679 TimeFields
->Milliseconds
= rem
/ TICKSPERMSEC
;
681 /* time is now in seconds */
682 TimeFields
->Year
= 0;
683 TimeFields
->Month
= 0;
684 TimeFields
->Day
= RtlExtendedLargeIntegerDivide( time
, SECSPERDAY
, &rem
);
686 /* rem is now the remaining seconds in the last day */
687 TimeFields
->Second
= rem
% 60;
689 TimeFields
->Minute
= rem
% 60;
690 TimeFields
->Hour
= rem
/ 60;
693 /***********************************************************************
694 * NtQuerySystemTime [NTDLL.@]
695 * ZwQuerySystemTime [NTDLL.@]
697 * Get the current system time.
700 * Time [O] Destination for the current system time.
703 * Success: STATUS_SUCCESS.
704 * Failure: An NTSTATUS error code indicating the problem.
706 NTSTATUS WINAPI
NtQuerySystemTime( PLARGE_INTEGER Time
)
710 gettimeofday( &now
, 0 );
711 Time
->QuadPart
= now
.tv_sec
* (ULONGLONG
)TICKSPERSEC
+ TICKS_1601_TO_1970
;
712 Time
->QuadPart
+= now
.tv_usec
* 10;
713 return STATUS_SUCCESS
;
716 /***********************************************************************
717 * TIME_GetTZAsStr [internal]
719 * Helper function that returns the given timezone as a string.
722 * utc [I] The current utc time.
723 * bias [I] The bias of the current timezone.
730 * This could be done with a hash table instead of merely iterating through a
731 * table, however with the small amount of entries (60 or so) I didn't think
734 static const WCHAR
* TIME_GetTZAsStr (time_t utc
, int bias
, int dst
)
737 struct tm
*ptm
= localtime(&utc
);
740 if (!strftime (psTZName
, 7, "%Z", ptm
))
743 for (i
=0; i
<(sizeof(TZ_INFO
) / sizeof(struct tagTZ_INFO
)); i
++)
745 if ( strcmp(TZ_INFO
[i
].psTZFromUnix
, psTZName
) == 0 &&
746 TZ_INFO
[i
].bias
== bias
&&
747 TZ_INFO
[i
].dst
== dst
749 return TZ_INFO
[i
].psTZWindows
;
755 /***********************************************************************
756 * RtlQueryTimeZoneInformation [NTDLL.@]
758 * Get information about the current timezone.
761 * tzinfo [O] Destination for the retrieved timezone info.
764 * Success: STATUS_SUCCESS.
765 * Failure: An NTSTATUS error code indicating the problem.
767 NTSTATUS WINAPI
RtlQueryTimeZoneInformation(LPTIME_ZONE_INFORMATION tzinfo
)
773 memset(tzinfo
, 0, sizeof(TIME_ZONE_INFORMATION
));
776 bias
= TIME_GetBias(gmt
, &daylight
);
778 tzinfo
->Bias
= -bias
/ 60;
779 tzinfo
->StandardBias
= 0;
780 tzinfo
->DaylightBias
= -60;
781 psTZ
= TIME_GetTZAsStr (gmt
, (-bias
/60), daylight
);
782 if (psTZ
) strcpyW( tzinfo
->StandardName
, psTZ
);
783 return STATUS_SUCCESS
;
786 /***********************************************************************
787 * RtlSetTimeZoneInformation [NTDLL.@]
789 * Set the current time zone information.
792 * tzinfo [I] Timezone information to set.
795 * Success: STATUS_SUCCESS.
796 * Failure: An NTSTATUS error code indicating the problem.
799 * Uses the obsolete unix timezone structure and tz_dsttime member.
801 NTSTATUS WINAPI
RtlSetTimeZoneInformation( const TIME_ZONE_INFORMATION
*tzinfo
)
803 #ifdef HAVE_SETTIMEOFDAY
806 tz
.tz_minuteswest
= tzinfo
->Bias
;
808 tz
.tz_dsttime
= DST_NONE
;
812 if(!settimeofday(NULL
, &tz
))
813 return STATUS_SUCCESS
;
815 return STATUS_PRIVILEGE_NOT_HELD
;
818 /***********************************************************************
819 * NtSetSystemTime [NTDLL.@]
820 * ZwSetSystemTime [NTDLL.@]
822 * Set the system time.
825 * NewTime [I] The time to set.
826 * OldTime [O] Optional destination for the previous system time.
829 * Success: STATUS_SUCCESS.
830 * Failure: An NTSTATUS error code indicating the problem.
832 NTSTATUS WINAPI
NtSetSystemTime(const LARGE_INTEGER
*NewTime
, LARGE_INTEGER
*OldTime
)
842 /* Return the old time if necessary */
844 NtQuerySystemTime(OldTime
);
846 RtlTimeToTimeFields(NewTime
, &tf
);
848 /* call gettimeofday to get the current timezone */
849 gettimeofday(&tv
, &tz
);
851 /* get delta local time from utc */
852 bias
= TIME_GetBias(oldsec
, &dst
);
854 /* get the number of seconds */
855 t
.tm_sec
= tf
.Second
;
856 t
.tm_min
= tf
.Minute
;
859 t
.tm_mon
= tf
.Month
- 1;
860 t
.tm_year
= tf
.Year
- 1900;
863 /* correct for timezone and daylight */
866 /* set the new time */
868 tv
.tv_usec
= tf
.Milliseconds
* 1000;
870 /* error and sanity check*/
871 if(sec
== (time_t)-1 || abs((int)(sec
-oldsec
)) > SETTIME_MAX_ADJUST
) {
874 #ifdef HAVE_SETTIMEOFDAY
875 err
= settimeofday(&tv
, NULL
); /* 0 is OK, -1 is error */
877 return STATUS_SUCCESS
;
883 ERR("Cannot set time to %d/%d/%d %d:%d:%d Time adjustment %ld %s\n",
884 tf
.Year
, tf
.Month
, tf
.Day
, tf
.Hour
, tf
.Minute
, tf
.Second
,
886 err
== -1 ? "No Permission"
887 : sec
== (time_t)-1 ? "" : "is too large." );
890 return STATUS_INVALID_PARAMETER
;
892 return STATUS_PRIVILEGE_NOT_HELD
;
894 return STATUS_NOT_IMPLEMENTED
;