linux-imx

/* Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Paul Eggert (eggert@twinsun.com).

​

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Library General Public License as

   published by the Free Software Foundation; either version 2 of the

   License, or (at your option) any later version.

​

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Library General Public License for more details.

​

   You should have received a copy of the GNU Library General Public

   License along with the GNU C Library; see the file COPYING.LIB.  If not,

   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

​

/*

 * dgb 10/02/98: ripped this from glibc source to help convert timestamps

 *               to unix time

 *     10/04/98: added new table-based lookup after seeing how ugly

 *               the gnu code is

 * blf 09/27/99: ripped out all the old code and inserted new table from

 *       John Brockmeyer (without leap second corrections)

 *       rewrote udf_stamp_to_time and fixed timezone accounting in

 *       udf_time_to_stamp.

 */

​

/*

 * We don't take into account leap seconds. This may be correct or incorrect.

 * For more NIST information (especially dealing with leap seconds), see:

 * http://www.boulder.nist.gov/timefreq/pubs/bulletin/leapsecond.htm

 */

​

#include "udfdecl.h"

​

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/time.h>

​

void

udf_disk_stamp_to_time(struct timespec64 *dest, struct timestamp src)

{

    u16 typeAndTimezone = le16_to_cpu(src.typeAndTimezone);

    u16 year = le16_to_cpu(src.year);

    uint8_t type = typeAndTimezone >> 12;

    int16_t offset;

​

    if (type == 1) {

        offset = typeAndTimezone << 4;

        /* sign extent offset */

        offset = (offset >> 4);

        if (offset == -2047) /* unspecified offset */

            offset = 0;

    } else

        offset = 0;

​

    dest->tv_sec = mktime64(year, src.month, src.day, src.hour, src.minute,

            src.second);

    dest->tv_sec -= offset * 60;

    dest->tv_nsec = 1000 * (src.centiseconds * 10000 +