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/*-
* Copyright (c) 1999, 2000
* Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
*
* This product includes software developed by Intel Corporation and
* its contributors.
*
* 4. Neither the name of Intel Corporation or its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <time.h>
#include <sys/time.h>
#include <stand.h>
#include "libski.h"
/*
// Accurate only for the past couple of centuries;
// that will probably do.
//
// (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h)
*/
#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
#define SECSPERHOUR ( 60*60 )
#define SECSPERDAY (24 * SECSPERHOUR)
struct ssc_time {
int Year;
int Month;
int Day;
int Hour;
int Minute;
int Second;
int Msec;
int Wday;
};
time_t
EfiTimeToUnixTime(struct ssc_time *ETime)
{
/*
// These arrays give the cumulative number of days up to the first of the
// month number used as the index (1 -> 12) for regular and leap years.
// The value at index 13 is for the whole year.
*/
static time_t CumulativeDays[2][14] = {
{0,
0,
31,
31 + 28,
31 + 28 + 31,
31 + 28 + 31 + 30,
31 + 28 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 },
{0,
0,
31,
31 + 29,
31 + 29 + 31,
31 + 29 + 31 + 30,
31 + 29 + 31 + 30 + 31,
31 + 29 + 31 + 30 + 31 + 30,
31 + 29 + 31 + 30 + 31 + 30 + 31,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }};
time_t UTime;
int Year;
ETime->Year += 1900;
/*
// Do a santity check
*/
if ( ETime->Year < 1998 || ETime->Year > 2099 ||
ETime->Month == 0 || ETime->Month > 12 ||
ETime->Day == 0 || ETime->Month > 31 ||
ETime->Hour > 23 ||
ETime->Minute > 59 ||
ETime->Second > 59 ) {
return (0);
}
/*
// Years
*/
UTime = 0;
for (Year = 1970; Year != ETime->Year; ++Year) {
UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY);
}
/*
// UTime should now be set to 00:00:00 on Jan 1 of the file's year.
//
// Months
*/
UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY);
/*
// UTime should now be set to 00:00:00 on the first of the file's month and year
//
// Days -- Don't count the file's day
*/
UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY);
/*
// Hours
*/
UTime += (ETime->Hour * SECSPERHOUR);
/*
// Minutes
*/
UTime += (ETime->Minute * 60);
/*
// Seconds
*/
UTime += ETime->Second;
return UTime;
}
time_t
time(time_t *tloc)
{
struct ssc_time time;
ssc((u_int64_t) &time, 0, 0, 0, SSC_GET_RTC);
return *tloc = EfiTimeToUnixTime(&time);
}
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