2 Unix SMB/CIFS implementation.
3 time handling functions
5 Copyright (C) Andrew Tridgell 1992-2004
6 Copyright (C) Stefan (metze) Metzmacher 2002
7 Copyright (C) Jeremy Allison 2007
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 * @brief time handling functions
32 #define TIME_T_MIN ((time_t)0 < (time_t) -1 ? (time_t) 0 \
33 : ~ (time_t) 0 << (sizeof (time_t) * CHAR_BIT - 1))
36 #define TIME_T_MAX (~ (time_t) 0 - TIME_T_MIN)
39 #define NTTIME_INFINITY (NTTIME)0x8000000000000000LL
41 /***************************************************************************
42 External access to time_t_min and time_t_max.
43 ****************************************************************************/
45 time_t get_time_t_max(void)
50 /***************************************************************************
51 A gettimeofday wrapper.
52 ****************************************************************************/
54 void GetTimeOfDay(struct timeval *tval)
56 #ifdef HAVE_GETTIMEOFDAY_TZ
57 gettimeofday(tval,NULL);
63 #if (SIZEOF_LONG == 8)
64 #define TIME_FIXUP_CONSTANT_INT 11644473600L
65 #elif (SIZEOF_LONG_LONG == 8)
66 #define TIME_FIXUP_CONSTANT_INT 11644473600LL
69 /****************************************************************************
70 Interpret an 8 byte "filetime" structure to a time_t
71 It's originally in "100ns units since jan 1st 1601"
73 An 8 byte value of 0xffffffffffffffff will be returned as a timespec of
79 ****************************************************************************/
81 time_t nt_time_to_unix(NTTIME nt)
83 return convert_timespec_to_time_t(nt_time_to_unix_timespec(&nt));
86 /****************************************************************************
87 Put a 8 byte filetime from a time_t. Uses GMT.
88 ****************************************************************************/
90 void unix_to_nt_time(NTTIME *nt, time_t t)
94 if (t == (time_t)-1) {
99 if (t == TIME_T_MAX) {
100 *nt = 0x7fffffffffffffffLL;
110 t2 += TIME_FIXUP_CONSTANT_INT;
116 /****************************************************************************
117 Check if it's a null unix time.
118 ****************************************************************************/
120 bool null_time(time_t t)
123 t == (time_t)0xFFFFFFFF ||
127 /****************************************************************************
128 Check if it's a null NTTIME.
129 ****************************************************************************/
131 bool null_nttime(NTTIME t)
133 return t == 0 || t == (NTTIME)-1;
136 /****************************************************************************
137 Check if it's a null timespec.
138 ****************************************************************************/
140 bool null_timespec(struct timespec ts)
142 return ts.tv_sec == 0 ||
143 ts.tv_sec == (time_t)0xFFFFFFFF ||
144 ts.tv_sec == (time_t)-1;
147 /*******************************************************************
148 create a 16 bit dos packed date
149 ********************************************************************/
150 static uint16_t make_dos_date1(struct tm *t)
153 ret = (((unsigned int)(t->tm_mon+1)) >> 3) | ((t->tm_year-80) << 1);
154 ret = ((ret&0xFF)<<8) | (t->tm_mday | (((t->tm_mon+1) & 0x7) << 5));
158 /*******************************************************************
159 create a 16 bit dos packed time
160 ********************************************************************/
161 static uint16_t make_dos_time1(struct tm *t)
164 ret = ((((unsigned int)t->tm_min >> 3)&0x7) | (((unsigned int)t->tm_hour) << 3));
165 ret = ((ret&0xFF)<<8) | ((t->tm_sec/2) | ((t->tm_min & 0x7) << 5));
169 /*******************************************************************
170 create a 32 bit dos packed date/time from some parameters
171 This takes a GMT time and returns a packed localtime structure
172 ********************************************************************/
173 static uint32_t make_dos_date(time_t unixdate, int zone_offset)
182 unixdate -= zone_offset;
184 t = gmtime(&unixdate);
189 ret = make_dos_date1(t);
190 ret = ((ret&0xFFFF)<<16) | make_dos_time1(t);
196 put a dos date into a buffer (time/date format)
197 This takes GMT time and puts local time in the buffer
199 void push_dos_date(uint8_t *buf, int offset, time_t unixdate, int zone_offset)
201 uint32_t x = make_dos_date(unixdate, zone_offset);
206 put a dos date into a buffer (date/time format)
207 This takes GMT time and puts local time in the buffer
209 void push_dos_date2(uint8_t *buf,int offset,time_t unixdate, int zone_offset)
212 x = make_dos_date(unixdate, zone_offset);
213 x = ((x&0xFFFF)<<16) | ((x&0xFFFF0000)>>16);
218 put a dos 32 bit "unix like" date into a buffer. This routine takes
219 GMT and converts it to LOCAL time before putting it (most SMBs assume
220 localtime for this sort of date)
222 void push_dos_date3(uint8_t *buf,int offset,time_t unixdate, int zone_offset)
224 if (!null_time(unixdate)) {
225 unixdate -= zone_offset;
227 SIVAL(buf,offset,unixdate);
230 /*******************************************************************
231 interpret a 32 bit dos packed date/time to some parameters
232 ********************************************************************/
233 static void interpret_dos_date(uint32_t date,int *year,int *month,int *day,int *hour,int *minute,int *second)
235 uint32_t p0,p1,p2,p3;
237 p0=date&0xFF; p1=((date&0xFF00)>>8)&0xFF;
238 p2=((date&0xFF0000)>>16)&0xFF; p3=((date&0xFF000000)>>24)&0xFF;
240 *second = 2*(p0 & 0x1F);
241 *minute = ((p0>>5)&0xFF) + ((p1&0x7)<<3);
242 *hour = (p1>>3)&0xFF;
244 *month = ((p2>>5)&0xFF) + ((p3&0x1)<<3) - 1;
245 *year = ((p3>>1)&0xFF) + 80;
249 create a unix date (int GMT) from a dos date (which is actually in
252 time_t pull_dos_date(const uint8_t *date_ptr, int zone_offset)
258 dos_date = IVAL(date_ptr,0);
260 if (dos_date == 0) return (time_t)0;
262 interpret_dos_date(dos_date,&t.tm_year,&t.tm_mon,
263 &t.tm_mday,&t.tm_hour,&t.tm_min,&t.tm_sec);
274 like make_unix_date() but the words are reversed
276 time_t pull_dos_date2(const uint8_t *date_ptr, int zone_offset)
280 x = IVAL(date_ptr,0);
281 x2 = ((x&0xFFFF)<<16) | ((x&0xFFFF0000)>>16);
284 return pull_dos_date((const uint8_t *)&x, zone_offset);
288 create a unix GMT date from a dos date in 32 bit "unix like" format
289 these generally arrive as localtimes, with corresponding DST
291 time_t pull_dos_date3(const uint8_t *date_ptr, int zone_offset)
293 time_t t = (time_t)IVAL(date_ptr,0);
300 /***************************************************************************
301 Return a HTTP/1.0 time string.
302 ***************************************************************************/
304 char *http_timestring(time_t t)
307 struct tm *tm = localtime(&t);
309 if (t == TIME_T_MAX) {
310 fstrcpy(buf, "never");
312 fstr_sprintf(buf, "%ld seconds since the Epoch", (long)t);
314 #ifndef HAVE_STRFTIME
315 const char *asct = asctime(tm);
316 fstrcpy(buf, asct ? asct : "unknown");
318 if(buf[strlen(buf)-1] == '\n') {
319 buf[strlen(buf)-1] = 0;
320 #else /* !HAVE_STRFTIME */
321 strftime(buf, sizeof(buf)-1, "%a, %d %b %Y %H:%M:%S %Z", tm);
322 #endif /* !HAVE_STRFTIME */
324 return talloc_strdup(talloc_tos(), buf);
329 Return the date and time as a string
331 char *timestring(TALLOC_CTX *mem_ctx, time_t t)
339 return talloc_asprintf(mem_ctx,
340 "%ld seconds since the Epoch",
345 /* some versions of gcc complain about using %c. This is a bug
346 in the gcc warning, not a bug in this code. See a recent
347 strftime() manual page for details.
349 strftime(tempTime,sizeof(tempTime)-1,"%c %Z",tm);
350 TimeBuf = talloc_strdup(mem_ctx, tempTime);
352 TimeBuf = talloc_strdup(mem_ctx, asctime(tm));
359 return a talloced string representing a NTTIME for human consumption
361 const char *nt_time_string(TALLOC_CTX *mem_ctx, NTTIME nt)
367 t = nt_time_to_unix(nt);
368 return timestring(mem_ctx, t);
373 parse a nttime as a large integer in a string and return a NTTIME
375 NTTIME nttime_from_string(const char *s)
377 return strtoull(s, NULL, 0);
381 return (tv1 - tv2) in microseconds
383 int64_t usec_time_diff(struct timeval *tv1, struct timeval *tv2)
385 int64_t sec_diff = tv1->tv_sec - tv2->tv_sec;
386 return (sec_diff * 1000000) + (int64_t)(tv1->tv_usec - tv2->tv_usec);
391 return a zero timeval
393 struct timeval timeval_zero(void)
402 return True if a timeval is zero
404 bool timeval_is_zero(const struct timeval *tv)
406 return tv->tv_sec == 0 && tv->tv_usec == 0;
410 return a timeval for the current time
412 struct timeval timeval_current(void)
420 return a timeval struct with the given elements
422 struct timeval timeval_set(uint32_t secs, uint32_t usecs)
432 return a timeval ofs microseconds after tv
434 struct timeval timeval_add(const struct timeval *tv,
435 uint32_t secs, uint32_t usecs)
437 struct timeval tv2 = *tv;
438 const unsigned int million = 1000000;
440 tv2.tv_usec += usecs;
441 tv2.tv_sec += tv2.tv_usec / million;
442 tv2.tv_usec = tv2.tv_usec % million;
447 return the sum of two timeval structures
449 struct timeval timeval_sum(const struct timeval *tv1,
450 const struct timeval *tv2)
452 return timeval_add(tv1, tv2->tv_sec, tv2->tv_usec);
456 return a timeval secs/usecs into the future
458 struct timeval timeval_current_ofs(uint32_t secs, uint32_t usecs)
460 struct timeval tv = timeval_current();
461 return timeval_add(&tv, secs, usecs);
465 compare two timeval structures.
466 Return -1 if tv1 < tv2
467 Return 0 if tv1 == tv2
468 Return 1 if tv1 > tv2
470 int timeval_compare(const struct timeval *tv1, const struct timeval *tv2)
472 if (tv1->tv_sec > tv2->tv_sec) return 1;
473 if (tv1->tv_sec < tv2->tv_sec) return -1;
474 if (tv1->tv_usec > tv2->tv_usec) return 1;
475 if (tv1->tv_usec < tv2->tv_usec) return -1;
480 return True if a timer is in the past
482 bool timeval_expired(const struct timeval *tv)
484 struct timeval tv2 = timeval_current();
485 if (tv2.tv_sec > tv->tv_sec) return True;
486 if (tv2.tv_sec < tv->tv_sec) return False;
487 return (tv2.tv_usec >= tv->tv_usec);
491 return the number of seconds elapsed between two times
493 double timeval_elapsed2(const struct timeval *tv1, const struct timeval *tv2)
495 return (tv2->tv_sec - tv1->tv_sec) +
496 (tv2->tv_usec - tv1->tv_usec)*1.0e-6;
500 return the number of seconds elapsed since a given time
502 double timeval_elapsed(const struct timeval *tv)
504 struct timeval tv2 = timeval_current();
505 return timeval_elapsed2(tv, &tv2);
509 return the lesser of two timevals
511 struct timeval timeval_min(const struct timeval *tv1,
512 const struct timeval *tv2)
514 if (tv1->tv_sec < tv2->tv_sec) return *tv1;
515 if (tv1->tv_sec > tv2->tv_sec) return *tv2;
516 if (tv1->tv_usec < tv2->tv_usec) return *tv1;
521 return the greater of two timevals
523 struct timeval timeval_max(const struct timeval *tv1,
524 const struct timeval *tv2)
526 if (tv1->tv_sec > tv2->tv_sec) return *tv1;
527 if (tv1->tv_sec < tv2->tv_sec) return *tv2;
528 if (tv1->tv_usec > tv2->tv_usec) return *tv1;
533 return the difference between two timevals as a timeval
534 if tv1 comes after tv2, then return a zero timeval
535 (this is *tv2 - *tv1)
537 struct timeval timeval_until(const struct timeval *tv1,
538 const struct timeval *tv2)
541 if (timeval_compare(tv1, tv2) >= 0) {
542 return timeval_zero();
544 t.tv_sec = tv2->tv_sec - tv1->tv_sec;
545 if (tv1->tv_usec > tv2->tv_usec) {
547 t.tv_usec = 1000000 - (tv1->tv_usec - tv2->tv_usec);
549 t.tv_usec = tv2->tv_usec - tv1->tv_usec;
556 convert a timeval to a NTTIME
558 NTTIME timeval_to_nttime(const struct timeval *tv)
560 return 10*(tv->tv_usec +
561 ((TIME_FIXUP_CONSTANT_INT + (uint64_t)tv->tv_sec) * 1000000));
564 /**************************************************************
565 Handle conversions between time_t and uint32, taking care to
566 preserve the "special" values.
567 **************************************************************/
569 uint32 convert_time_t_to_uint32(time_t t)
571 #if (defined(SIZEOF_TIME_T) && (SIZEOF_TIME_T == 8))
572 /* time_t is 64-bit. */
573 if (t == 0x8000000000000000LL) {
575 } else if (t == 0x7FFFFFFFFFFFFFFFLL) {
582 time_t convert_uint32_to_time_t(uint32 u)
584 #if (defined(SIZEOF_TIME_T) && (SIZEOF_TIME_T == 8))
585 /* time_t is 64-bit. */
586 if (u == 0x80000000) {
587 return (time_t)0x8000000000000000LL;
588 } else if (u == 0x7FFFFFFF) {
589 return (time_t)0x7FFFFFFFFFFFFFFFLL;
595 /*******************************************************************
596 Yield the difference between *A and *B, in seconds, ignoring leap seconds.
597 ********************************************************************/
599 static int tm_diff(struct tm *a, struct tm *b)
601 int ay = a->tm_year + (1900 - 1);
602 int by = b->tm_year + (1900 - 1);
603 int intervening_leap_days =
604 (ay/4 - by/4) - (ay/100 - by/100) + (ay/400 - by/400);
606 int days = 365*years + intervening_leap_days + (a->tm_yday - b->tm_yday);
607 int hours = 24*days + (a->tm_hour - b->tm_hour);
608 int minutes = 60*hours + (a->tm_min - b->tm_min);
609 int seconds = 60*minutes + (a->tm_sec - b->tm_sec);
614 int extra_time_offset=0;
616 /*******************************************************************
617 Return the UTC offset in seconds west of UTC, or 0 if it cannot be determined.
618 ********************************************************************/
620 int get_time_zone(time_t t)
622 struct tm *tm = gmtime(&t);
630 return tm_diff(&tm_utc,tm)+60*extra_time_offset;
633 /****************************************************************************
634 Check if NTTIME is 0.
635 ****************************************************************************/
637 bool nt_time_is_zero(const NTTIME *nt)
642 /****************************************************************************
643 Convert ASN.1 GeneralizedTime string to unix-time.
644 Returns 0 on failure; Currently ignores timezone.
645 ****************************************************************************/
647 time_t generalized_to_unix_time(const char *str)
653 if (sscanf(str, "%4d%2d%2d%2d%2d%2d",
654 &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
655 &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
664 /*******************************************************************
665 Accessor function for the server time zone offset.
666 set_server_zone_offset() must have been called first.
667 ******************************************************************/
669 static int server_zone_offset;
671 int get_server_zone_offset(void)
673 return server_zone_offset;
676 /*******************************************************************
677 Initialize the server time zone offset. Called when a client connects.
678 ******************************************************************/
680 int set_server_zone_offset(time_t t)
682 server_zone_offset = get_time_zone(t);
683 return server_zone_offset;
686 /****************************************************************************
687 Return the date and time as a string
688 ****************************************************************************/
690 char *current_timestring(TALLOC_CTX *ctx, bool hires)
699 t = (time_t)tp.tv_sec;
708 "%ld.%06ld seconds since the Epoch",
714 "%ld seconds since the Epoch",
720 strftime(TimeBuf,sizeof(TimeBuf)-1,"%Y/%m/%d %H:%M:%S",tm);
721 slprintf(TimeBuf+strlen(TimeBuf),
722 sizeof(TimeBuf)-1 - strlen(TimeBuf),
726 strftime(TimeBuf,sizeof(TimeBuf)-1,"%Y/%m/%d %H:%M:%S",tm);
730 const char *asct = asctime(tm);
734 asct ? asct : "unknown",
737 const char *asct = asctime(tm);
738 fstrcpy(TimeBuf, asct ? asct : "unknown");
742 return talloc_strdup(ctx, TimeBuf);
746 /*******************************************************************
747 Put a dos date into a buffer (time/date format).
748 This takes GMT time and puts local time in the buffer.
749 ********************************************************************/
751 static void put_dos_date(char *buf,int offset,time_t unixdate, int zone_offset)
753 uint32 x = make_dos_date(unixdate, zone_offset);
757 /*******************************************************************
758 Put a dos date into a buffer (date/time format).
759 This takes GMT time and puts local time in the buffer.
760 ********************************************************************/
762 static void put_dos_date2(char *buf,int offset,time_t unixdate, int zone_offset)
764 uint32 x = make_dos_date(unixdate, zone_offset);
765 x = ((x&0xFFFF)<<16) | ((x&0xFFFF0000)>>16);
769 /*******************************************************************
770 Put a dos 32 bit "unix like" date into a buffer. This routine takes
771 GMT and converts it to LOCAL time before putting it (most SMBs assume
772 localtime for this sort of date)
773 ********************************************************************/
775 static void put_dos_date3(char *buf,int offset,time_t unixdate, int zone_offset)
777 if (!null_mtime(unixdate)) {
778 unixdate -= zone_offset;
780 SIVAL(buf,offset,unixdate);
784 /***************************************************************************
785 Server versions of the above functions.
786 ***************************************************************************/
788 void srv_put_dos_date(char *buf,int offset,time_t unixdate)
790 put_dos_date(buf, offset, unixdate, server_zone_offset);
793 void srv_put_dos_date2(char *buf,int offset, time_t unixdate)
795 put_dos_date2(buf, offset, unixdate, server_zone_offset);
798 void srv_put_dos_date3(char *buf,int offset,time_t unixdate)
800 put_dos_date3(buf, offset, unixdate, server_zone_offset);
803 /****************************************************************************
804 Take a Unix time and convert to an NTTIME structure and place in buffer
806 ****************************************************************************/
808 void put_long_date_timespec(char *p, struct timespec ts)
811 unix_timespec_to_nt_time(&nt, ts);
812 SIVAL(p, 0, nt & 0xFFFFFFFF);
813 SIVAL(p, 4, nt >> 32);
816 void put_long_date(char *p, time_t t)
821 put_long_date_timespec(p, ts);
824 /****************************************************************************
825 Return the best approximation to a 'create time' under UNIX from a stat
827 ****************************************************************************/
829 time_t get_create_time(const SMB_STRUCT_STAT *st,bool fake_dirs)
833 if(S_ISDIR(st->st_mode) && fake_dirs) {
834 return (time_t)315493200L; /* 1/1/1980 */
837 ret = MIN(st->st_ctime, st->st_mtime);
838 ret1 = MIN(ret, st->st_atime);
840 if(ret1 != (time_t)0) {
845 * One of ctime, mtime or atime was zero (probably atime).
846 * Just return MIN(ctime, mtime).
851 struct timespec get_create_timespec(const SMB_STRUCT_STAT *st,bool fake_dirs)
854 ts.tv_sec = get_create_time(st, fake_dirs);
859 /****************************************************************************
860 Get/Set all the possible time fields from a stat struct as a timespec.
861 ****************************************************************************/
863 struct timespec get_atimespec(const SMB_STRUCT_STAT *pst)
865 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
868 /* Old system - no ns timestamp. */
869 ret.tv_sec = pst->st_atime;
873 #if defined(HAVE_STAT_ST_ATIM)
875 #elif defined(HAVE_STAT_ST_ATIMENSEC)
877 ret.tv_sec = pst->st_atime;
878 ret.tv_nsec = pst->st_atimensec;
881 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
886 void set_atimespec(SMB_STRUCT_STAT *pst, struct timespec ts)
888 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
889 /* Old system - no ns timestamp. */
890 pst->st_atime = ts.tv_sec;
892 #if defined(HAVE_STAT_ST_ATIM)
894 #elif defined(HAVE_STAT_ST_ATIMENSEC)
895 pst->st_atime = ts.tv_sec;
896 pst->st_atimensec = ts.tv_nsec
898 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
903 struct timespec get_mtimespec(const SMB_STRUCT_STAT *pst)
905 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
908 /* Old system - no ns timestamp. */
909 ret.tv_sec = pst->st_mtime;
913 #if defined(HAVE_STAT_ST_MTIM)
915 #elif defined(HAVE_STAT_ST_MTIMENSEC)
917 ret.tv_sec = pst->st_mtime;
918 ret.tv_nsec = pst->st_mtimensec;
921 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
926 void set_mtimespec(SMB_STRUCT_STAT *pst, struct timespec ts)
928 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
929 /* Old system - no ns timestamp. */
930 pst->st_mtime = ts.tv_sec;
932 #if defined(HAVE_STAT_ST_MTIM)
934 #elif defined(HAVE_STAT_ST_MTIMENSEC)
935 pst->st_mtime = ts.tv_sec;
936 pst->st_mtimensec = ts.tv_nsec
938 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
943 struct timespec get_ctimespec(const SMB_STRUCT_STAT *pst)
945 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
948 /* Old system - no ns timestamp. */
949 ret.tv_sec = pst->st_ctime;
953 #if defined(HAVE_STAT_ST_CTIM)
955 #elif defined(HAVE_STAT_ST_CTIMENSEC)
957 ret.tv_sec = pst->st_ctime;
958 ret.tv_nsec = pst->st_ctimensec;
961 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
966 void set_ctimespec(SMB_STRUCT_STAT *pst, struct timespec ts)
968 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
969 /* Old system - no ns timestamp. */
970 pst->st_ctime = ts.tv_sec;
972 #if defined(HAVE_STAT_ST_CTIM)
974 #elif defined(HAVE_STAT_ST_CTIMENSEC)
975 pst->st_ctime = ts.tv_sec;
976 pst->st_ctimensec = ts.tv_nsec
978 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
983 void dos_filetime_timespec(struct timespec *tsp)
989 /*******************************************************************
990 Create a unix date (int GMT) from a dos date (which is actually in
992 ********************************************************************/
994 static time_t make_unix_date(const void *date_ptr, int zone_offset)
1000 dos_date = IVAL(date_ptr,0);
1002 if (dos_date == 0) {
1006 interpret_dos_date(dos_date,&t.tm_year,&t.tm_mon,
1007 &t.tm_mday,&t.tm_hour,&t.tm_min,&t.tm_sec);
1017 /*******************************************************************
1018 Like make_unix_date() but the words are reversed.
1019 ********************************************************************/
1021 static time_t make_unix_date2(const void *date_ptr, int zone_offset)
1025 x = IVAL(date_ptr,0);
1026 x2 = ((x&0xFFFF)<<16) | ((x&0xFFFF0000)>>16);
1029 return(make_unix_date((const void *)&x, zone_offset));
1032 /*******************************************************************
1033 Create a unix GMT date from a dos date in 32 bit "unix like" format
1034 these generally arrive as localtimes, with corresponding DST.
1035 ******************************************************************/
1037 static time_t make_unix_date3(const void *date_ptr, int zone_offset)
1039 time_t t = (time_t)IVAL(date_ptr,0);
1040 if (!null_mtime(t)) {
1046 time_t srv_make_unix_date(const void *date_ptr)
1048 return make_unix_date(date_ptr, server_zone_offset);
1051 time_t srv_make_unix_date2(const void *date_ptr)
1053 return make_unix_date2(date_ptr, server_zone_offset);
1056 time_t srv_make_unix_date3(const void *date_ptr)
1058 return make_unix_date3(date_ptr, server_zone_offset);
1061 time_t convert_timespec_to_time_t(struct timespec ts)
1063 /* 1 ns == 1,000,000,000 - one thousand millionths of a second.
1064 increment if it's greater than 500 millionth of a second. */
1065 if (ts.tv_nsec > 500000000) {
1066 return ts.tv_sec + 1;
1071 struct timespec convert_time_t_to_timespec(time_t t)
1079 /****************************************************************************
1080 Convert a normalized timeval to a timespec.
1081 ****************************************************************************/
1083 struct timespec convert_timeval_to_timespec(const struct timeval tv)
1086 ts.tv_sec = tv.tv_sec;
1087 ts.tv_nsec = tv.tv_usec * 1000;
1091 /****************************************************************************
1092 Convert a normalized timespec to a timeval.
1093 ****************************************************************************/
1095 struct timeval convert_timespec_to_timeval(const struct timespec ts)
1098 tv.tv_sec = ts.tv_sec;
1099 tv.tv_usec = ts.tv_nsec / 1000;
1103 /****************************************************************************
1104 Return a timespec for the current time
1105 ****************************************************************************/
1107 struct timespec timespec_current(void)
1112 ts.tv_sec = tv.tv_sec;
1113 ts.tv_nsec = tv.tv_usec * 1000;
1117 /****************************************************************************
1118 Return the lesser of two timespecs.
1119 ****************************************************************************/
1121 struct timespec timespec_min(const struct timespec *ts1,
1122 const struct timespec *ts2)
1124 if (ts1->tv_sec < ts2->tv_sec) return *ts1;
1125 if (ts1->tv_sec > ts2->tv_sec) return *ts2;
1126 if (ts1->tv_nsec < ts2->tv_nsec) return *ts1;
1130 /****************************************************************************
1131 compare two timespec structures.
1132 Return -1 if ts1 < ts2
1133 Return 0 if ts1 == ts2
1134 Return 1 if ts1 > ts2
1135 ****************************************************************************/
1137 int timespec_compare(const struct timespec *ts1, const struct timespec *ts2)
1139 if (ts1->tv_sec > ts2->tv_sec) return 1;
1140 if (ts1->tv_sec < ts2->tv_sec) return -1;
1141 if (ts1->tv_nsec > ts2->tv_nsec) return 1;
1142 if (ts1->tv_nsec < ts2->tv_nsec) return -1;
1146 /****************************************************************************
1147 Interprets an nt time into a unix struct timespec.
1148 Differs from nt_time_to_unix in that an 8 byte value of 0xffffffffffffffff
1149 will be returned as (time_t)-1, whereas nt_time_to_unix returns 0 in this case.
1150 ****************************************************************************/
1152 struct timespec interpret_long_date(const char *p)
1155 nt = IVAL(p,0) + ((uint64_t)IVAL(p,4) << 32);
1156 if (nt == (uint64_t)-1) {
1157 struct timespec ret;
1158 ret.tv_sec = (time_t)-1;
1162 return nt_time_to_unix_timespec(&nt);
1165 /***************************************************************************
1166 Client versions of the above functions.
1167 ***************************************************************************/
1169 void cli_put_dos_date(struct cli_state *cli, char *buf, int offset, time_t unixdate)
1171 put_dos_date(buf, offset, unixdate, cli->serverzone);
1174 void cli_put_dos_date2(struct cli_state *cli, char *buf, int offset, time_t unixdate)
1176 put_dos_date2(buf, offset, unixdate, cli->serverzone);
1179 void cli_put_dos_date3(struct cli_state *cli, char *buf, int offset, time_t unixdate)
1181 put_dos_date3(buf, offset, unixdate, cli->serverzone);
1184 time_t cli_make_unix_date(struct cli_state *cli, const void *date_ptr)
1186 return make_unix_date(date_ptr, cli->serverzone);
1189 time_t cli_make_unix_date2(struct cli_state *cli, const void *date_ptr)
1191 return make_unix_date2(date_ptr, cli->serverzone);
1194 time_t cli_make_unix_date3(struct cli_state *cli, const void *date_ptr)
1196 return make_unix_date3(date_ptr, cli->serverzone);
1199 /* Large integer version. */
1200 struct timespec nt_time_to_unix_timespec(NTTIME *nt)
1203 struct timespec ret;
1205 if (*nt == 0 || *nt == (int64)-1) {
1212 /* d is now in 100ns units, since jan 1st 1601".
1213 Save off the ns fraction. */
1216 * Take the last seven decimal digits and multiply by 100.
1217 * to convert from 100ns units to 1ns units.
1219 ret.tv_nsec = (long) ((d % (1000 * 1000 * 10)) * 100);
1221 /* Convert to seconds */
1224 /* Now adjust by 369 years to make the secs since 1970 */
1225 d -= TIME_FIXUP_CONSTANT_INT;
1227 if (d <= (int64)TIME_T_MIN) {
1228 ret.tv_sec = TIME_T_MIN;
1233 if (d >= (int64)TIME_T_MAX) {
1234 ret.tv_sec = TIME_T_MAX;
1239 ret.tv_sec = (time_t)d;
1242 /****************************************************************************
1243 Check if two NTTIMEs are the same.
1244 ****************************************************************************/
1246 bool nt_time_equals(const NTTIME *nt1, const NTTIME *nt2)
1248 return (*nt1 == *nt2);
1251 /*******************************************************************
1252 Re-read the smb serverzone value.
1253 ******************************************************************/
1255 static struct timeval start_time_hires;
1259 set_server_zone_offset(time(NULL));
1261 DEBUG(4,("TimeInit: Serverzone is %d\n", server_zone_offset));
1263 /* Save the start time of this process. */
1264 if (start_time_hires.tv_sec == 0 && start_time_hires.tv_usec == 0) {
1265 GetTimeOfDay(&start_time_hires);
1269 /**********************************************************************
1270 Return a timeval struct of the uptime of this process. As TimeInit is
1271 done before a daemon fork then this is the start time from the parent
1273 ***********************************************************************/
1275 void get_process_uptime(struct timeval *ret_time)
1277 struct timeval time_now_hires;
1279 GetTimeOfDay(&time_now_hires);
1280 ret_time->tv_sec = time_now_hires.tv_sec - start_time_hires.tv_sec;
1281 if (time_now_hires.tv_usec < start_time_hires.tv_usec) {
1282 ret_time->tv_sec -= 1;
1283 ret_time->tv_usec = 1000000 + (time_now_hires.tv_usec - start_time_hires.tv_usec);
1285 ret_time->tv_usec = time_now_hires.tv_usec - start_time_hires.tv_usec;
1289 /****************************************************************************
1290 Convert a NTTIME structure to a time_t.
1291 It's originally in "100ns units".
1293 This is an absolute version of the one above.
1294 By absolute I mean, it doesn't adjust from 1/1/1601 to 1/1/1970
1295 if the NTTIME was 5 seconds, the time_t is 5 seconds. JFM
1296 ****************************************************************************/
1298 time_t nt_time_to_unix_abs(const NTTIME *nt)
1306 if (*nt == (uint64)-1) {
1310 if (*nt == NTTIME_INFINITY) {
1314 /* reverse the time */
1315 /* it's a negative value, turn it to positive */
1318 d += 1000*1000*10/2;
1321 if (!(TIME_T_MIN <= ((time_t)d) && ((time_t)d) <= TIME_T_MAX)) {
1328 time_t uint64s_nt_time_to_unix_abs(const uint64_t *src)
1332 return nt_time_to_unix_abs(&nttime);
1335 /****************************************************************************
1336 Put a 8 byte filetime from a struct timespec. Uses GMT.
1337 ****************************************************************************/
1339 void unix_timespec_to_nt_time(NTTIME *nt, struct timespec ts)
1343 if (ts.tv_sec ==0 && ts.tv_nsec == 0) {
1347 if (ts.tv_sec == TIME_T_MAX) {
1348 *nt = 0x7fffffffffffffffLL;
1351 if (ts.tv_sec == (time_t)-1) {
1357 d += TIME_FIXUP_CONSTANT_INT;
1359 /* d is now in 100ns units. */
1360 d += (ts.tv_nsec / 100);
1365 /****************************************************************************
1366 Convert a time_t to a NTTIME structure
1368 This is an absolute version of the one above.
1369 By absolute I mean, it doesn't adjust from 1/1/1970 to 1/1/1601
1370 If the time_t was 5 seconds, the NTTIME is 5 seconds. JFM
1371 ****************************************************************************/
1373 void unix_to_nt_time_abs(NTTIME *nt, time_t t)
1382 if (t == TIME_T_MAX) {
1383 *nt = 0x7fffffffffffffffLL;
1387 if (t == (time_t)-1) {
1388 /* that's what NT uses for infinite */
1389 *nt = NTTIME_INFINITY;
1398 /* convert to a negative value */
1403 /****************************************************************************
1404 Check if it's a null mtime.
1405 ****************************************************************************/
1407 bool null_mtime(time_t mtime)
1409 if (mtime == 0 || mtime == (time_t)0xFFFFFFFF || mtime == (time_t)-1)
1414 /****************************************************************************
1415 Utility function that always returns a const string even if localtime
1417 ****************************************************************************/
1419 const char *time_to_asc(const time_t t)
1422 struct tm *lt = localtime(&t);
1425 return "unknown time";
1430 return "unknown time";
1435 const char *display_time(NTTIME nttime)
1440 int days, hours, mins, secs;
1445 if (nttime==NTTIME_INFINITY)
1452 high = high * (~(nttime >> 32));
1454 low = ~(nttime & 0xFFFFFFFF);
1455 low = low/(1000*1000*10);
1457 sec=(int)(high+low);
1459 days=sec/(60*60*24);
1460 hours=(sec - (days*60*60*24)) / (60*60);
1461 mins=(sec - (days*60*60*24) - (hours*60*60) ) / 60;
1462 secs=sec - (days*60*60*24) - (hours*60*60) - (mins*60);
1464 return talloc_asprintf(talloc_tos(), "%u days, %u hours, %u minutes, "
1465 "%u seconds", days, hours, mins, secs);
1468 bool nt_time_is_set(const NTTIME *nt)
1470 if (*nt == 0x7FFFFFFFFFFFFFFFLL) {
1474 if (*nt == NTTIME_INFINITY) {