101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
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/* Copyright (c) 2007, Christophe Fergeau <teuf@gnome.org>
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* Part of the libgpod project.
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*
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* URL: http://www.gtkpod.org/
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* URL: http://gtkpod.sourceforge.net/
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*
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* The code contained in this file is free software; you can redistribute
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* it and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either version
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* 2.1 of the License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this code; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* iTunes and iPod are trademarks of Apple
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*
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* This product is not supported/written/published by Apple!
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*
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <unistd.h>
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#include <scsi/sg_cmds.h>
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#include <endian.h>
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#include <time.h>
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static int do_sg_write_buffer (const char *device, void *buffer, size_t len)
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{
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int fd;
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size_t i;
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fd = open (device, O_RDWR);
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if (fd < 0) {
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printf ("Couldn't open device %s\n", device);
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return -1;
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}
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printf (" Data Payload: ");
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for (i = 0; i < len; i++) {
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printf ("%02x ", *((uint8_t *)buffer+i));
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}
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printf ("\n");
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if (sg_ll_write_buffer (fd, 1, 0, 0x0c0000, buffer, len, 1, 1) != 0) {
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close(fd);
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return -2;
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}
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close(fd);
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return 0;
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}
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int sync_time (const char *device, struct tm *tm)
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{
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struct iPodTime {
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uint16_t year;
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uint16_t days;
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uint8_t timezone;
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uint8_t hour;
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uint8_t minute;
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uint8_t second;
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uint8_t dst;
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uint8_t padding[3];
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} __attribute__((__packed__));
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struct iPodTime ipod_time;
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if (tm == NULL) {
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time_t current_time;
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current_time = time (NULL);
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tm = localtime (¤t_time);
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}
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ipod_time.year = htobe16 (1900+tm->tm_year);
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ipod_time.days = htobe16 (tm->tm_yday);
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/* the timezone value is the shift east of UTC in 15 min chunks
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* so eg. UTC+2 is 2*4 = 8
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*/
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ipod_time.timezone = tm->tm_gmtoff / 900;
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ipod_time.hour = tm->tm_hour;
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ipod_time.minute = tm->tm_min;
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ipod_time.second = tm->tm_sec;
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if (tm->tm_isdst) {
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ipod_time.dst = 1;
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} else {
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ipod_time.dst = 0;
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}
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memset (ipod_time.padding, 0, sizeof (ipod_time.padding));
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return do_sg_write_buffer (device, &ipod_time, sizeof (ipod_time));
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}
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