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/* Copyright (c) 2007, Christophe Fergeau <teuf@gnome.org>
* Part of the libgpod project.
*
* URL: http://www.gtkpod.org/
* URL: http://gtkpod.sourceforge.net/
*
* The code contained in this file is free software; you can redistribute
* it and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either version
* 2.1 of the License, or (at your option) any later version.
*
* This file 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this code; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* iTunes and iPod are trademarks of Apple
*
* This product is not supported/written/published by Apple!
*
*/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <scsi/sg_cmds.h>
#include <endian.h>
#include <time.h>
static int do_sg_write_buffer (const char *device, void *buffer, size_t len)
{
int fd;
size_t i;
fd = open (device, O_RDWR);
if (fd < 0) {
printf ("Couldn't open device %s\n", device);
return -1;
}
printf (" Data Payload: ");
for (i = 0; i < len; i++) {
printf ("%02x ", *((uint8_t *)buffer+i));
}
printf ("\n");
if (sg_ll_write_buffer (fd, 1, 0, 0x0c0000, buffer, len, 1, 1) != 0) {
close(fd);
return -2;
}
close(fd);
return 0;
}
int sync_time (const char *device, struct tm *tm)
{
struct iPodTime {
uint16_t year;
uint16_t days;
uint8_t timezone;
uint8_t hour;
uint8_t minute;
uint8_t second;
uint8_t dst;
uint8_t padding[3];
} __attribute__((__packed__));
struct iPodTime ipod_time;
if (tm == NULL) {
time_t current_time;
current_time = time (NULL);
tm = localtime (¤t_time);
}
ipod_time.year = htobe16 (1900+tm->tm_year);
ipod_time.days = htobe16 (tm->tm_yday);
/* the timezone value is the shift east of UTC in 15 min chunks
* so eg. UTC+2 is 2*4 = 8
*/
ipod_time.timezone = tm->tm_gmtoff / 900;
ipod_time.hour = tm->tm_hour;
ipod_time.minute = tm->tm_min;
ipod_time.second = tm->tm_sec;
if (tm->tm_isdst) {
ipod_time.dst = 1;
} else {
ipod_time.dst = 0;
}
memset (ipod_time.padding, 0, sizeof (ipod_time.padding));
return do_sg_write_buffer (device, &ipod_time, sizeof (ipod_time));
}
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