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Implement time().
This commit is contained in:
Doug Rabson
parent
a09c8e438b
commit
447a0851af
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=83666
@ -45,6 +45,9 @@ static const char rcsid[] =
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#include <time.h>
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#include <sys/time.h>
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#include <stand.h>
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#include "libski.h"
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/*
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// Accurate only for the past couple of centuries;
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@ -57,9 +60,118 @@ static const char rcsid[] =
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#define SECSPERHOUR ( 60*60 )
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#define SECSPERDAY (24 * SECSPERHOUR)
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struct ssc_time {
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int Year;
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int Month;
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int Day;
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int Hour;
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int Minute;
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int Second;
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int Msec;
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int Wday;
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};
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time_t
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EfiTimeToUnixTime(struct ssc_time *ETime)
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{
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/*
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// These arrays give the cumulative number of days up to the first of the
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// month number used as the index (1 -> 12) for regular and leap years.
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// The value at index 13 is for the whole year.
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*/
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static time_t CumulativeDays[2][14] = {
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{0,
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0,
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31,
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31 + 28,
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31 + 28 + 31,
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31 + 28 + 31 + 30,
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31 + 28 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 },
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{0,
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0,
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31,
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31 + 29,
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31 + 29 + 31,
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31 + 29 + 31 + 30,
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31 + 29 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }};
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time_t UTime;
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int Year;
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ETime->Year += 1900;
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/*
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// Do a santity check
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*/
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if ( ETime->Year < 1998 || ETime->Year > 2099 ||
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ETime->Month == 0 || ETime->Month > 12 ||
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ETime->Day == 0 || ETime->Month > 31 ||
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ETime->Hour > 23 ||
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ETime->Minute > 59 ||
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ETime->Second > 59 ) {
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return (0);
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}
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/*
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// Years
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*/
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UTime = 0;
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for (Year = 1970; Year != ETime->Year; ++Year) {
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UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY);
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}
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/*
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// UTime should now be set to 00:00:00 on Jan 1 of the file's year.
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//
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// Months
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*/
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UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY);
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/*
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// UTime should now be set to 00:00:00 on the first of the file's month and year
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//
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// Days -- Don't count the file's day
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*/
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UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY);
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/*
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// Hours
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*/
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UTime += (ETime->Hour * SECSPERHOUR);
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/*
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// Minutes
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*/
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UTime += (ETime->Minute * 60);
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/*
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// Seconds
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*/
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UTime += ETime->Second;
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return UTime;
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}
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time_t
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time(time_t *tloc)
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{
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return 0; /* XXX */
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struct ssc_time time;
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ssc((u_int64_t) &time, 0, 0, 0, SSC_GET_RTC);
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return *tloc = EfiTimeToUnixTime(&time);
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}
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@ -45,6 +45,9 @@ static const char rcsid[] =
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#include <time.h>
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#include <sys/time.h>
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#include <stand.h>
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#include "libski.h"
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/*
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// Accurate only for the past couple of centuries;
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@ -57,9 +60,118 @@ static const char rcsid[] =
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#define SECSPERHOUR ( 60*60 )
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#define SECSPERDAY (24 * SECSPERHOUR)
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struct ssc_time {
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int Year;
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int Month;
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int Day;
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int Hour;
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int Minute;
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int Second;
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int Msec;
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int Wday;
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};
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time_t
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EfiTimeToUnixTime(struct ssc_time *ETime)
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{
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/*
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// These arrays give the cumulative number of days up to the first of the
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// month number used as the index (1 -> 12) for regular and leap years.
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// The value at index 13 is for the whole year.
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*/
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static time_t CumulativeDays[2][14] = {
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{0,
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0,
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31,
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31 + 28,
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31 + 28 + 31,
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31 + 28 + 31 + 30,
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31 + 28 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 },
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{0,
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0,
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31,
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31 + 29,
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31 + 29 + 31,
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31 + 29 + 31 + 30,
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31 + 29 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }};
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time_t UTime;
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int Year;
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ETime->Year += 1900;
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/*
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// Do a santity check
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*/
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if ( ETime->Year < 1998 || ETime->Year > 2099 ||
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ETime->Month == 0 || ETime->Month > 12 ||
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ETime->Day == 0 || ETime->Month > 31 ||
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ETime->Hour > 23 ||
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ETime->Minute > 59 ||
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ETime->Second > 59 ) {
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return (0);
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}
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/*
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// Years
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*/
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UTime = 0;
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for (Year = 1970; Year != ETime->Year; ++Year) {
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UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY);
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}
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/*
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// UTime should now be set to 00:00:00 on Jan 1 of the file's year.
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//
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// Months
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*/
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UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY);
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/*
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// UTime should now be set to 00:00:00 on the first of the file's month and year
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//
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// Days -- Don't count the file's day
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*/
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UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY);
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/*
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// Hours
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*/
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UTime += (ETime->Hour * SECSPERHOUR);
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/*
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// Minutes
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*/
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UTime += (ETime->Minute * 60);
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/*
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// Seconds
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*/
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UTime += ETime->Second;
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return UTime;
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}
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time_t
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time(time_t *tloc)
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{
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return 0; /* XXX */
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struct ssc_time time;
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ssc((u_int64_t) &time, 0, 0, 0, SSC_GET_RTC);
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return *tloc = EfiTimeToUnixTime(&time);
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}
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