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lib: util: Add a function nt_time_to_unix_timespec_raw().

Not yet used. Does no checks on the converted values.

A later cleanup will allow us to move nt_time_to_unix_timespec()
and nt_time_to_full_timespec() to use common code.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14928

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
(cherry picked from commit 29d69c22a0)
This commit is contained in:
Jeremy Allison 2022-01-06 13:58:20 -08:00 committed by Jule Anger
parent 9f0353b2f4
commit a0934daa71
2 changed files with 32 additions and 0 deletions

View File

@ -869,6 +869,36 @@ _PUBLIC_ int get_time_zone(time_t t)
return tm_diff(&tm_utc,tm);
}
/*
* Raw convert an NTTIME to a unix timespec.
*/
struct timespec nt_time_to_unix_timespec_raw(
NTTIME nt)
{
int64_t d;
struct timespec ret;
d = (int64_t)nt;
/* d is now in 100ns units, since jan 1st 1601".
Save off the ns fraction. */
/*
* Take the last seven decimal digits and multiply by 100.
* to convert from 100ns units to 1ns units.
*/
ret.tv_nsec = (long) ((d % (1000 * 1000 * 10)) * 100);
/* Convert to seconds */
d /= 1000*1000*10;
/* Now adjust by 369 years to make the secs since 1970 */
d -= TIME_FIXUP_CONSTANT_INT;
ret.tv_sec = (time_t)d;
return ret;
}
struct timespec nt_time_to_unix_timespec(NTTIME nt)
{
int64_t d;

View File

@ -343,6 +343,8 @@ bool nt_time_equal(NTTIME *t1, NTTIME *t2);
void interpret_dos_date(uint32_t date,int *year,int *month,int *day,int *hour,int *minute,int *second);
struct timespec nt_time_to_unix_timespec_raw(NTTIME nt);
struct timespec nt_time_to_unix_timespec(NTTIME nt);
time_t convert_timespec_to_time_t(struct timespec ts);