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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006-2007 Dave Chapman
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <errno.h>
#include "ipodio.h"
#if defined(linux) || defined (__linux)
#include <sys/mount.h>
#include <linux/hdreg.h>
#define IPOD_SECTORSIZE_IOCTL BLKSSZGET
static void get_geometry(struct ipod_t* ipod)
{
struct hd_geometry geometry;
if (!ioctl(ipod->dh, HDIO_GETGEO, &geometry)) {
/* never use geometry.cylinders - it is truncated */
ipod->num_heads = geometry.heads;
ipod->sectors_per_track = geometry.sectors;
} else {
ipod->num_heads = 0;
ipod->sectors_per_track = 0;
}
}
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) \
|| defined(__bsdi__) || defined(__DragonFly__)
#include <sys/disk.h>
#define IPOD_SECTORSIZE_IOCTL DIOCGSECTORSIZE
/* TODO: Implement this function for BSD */
static void get_geometry(struct ipod_t* ipod)
{
/* Are these universal for all ipods? */
ipod->num_heads = 255;
ipod->sectors_per_track = 63;
}
#elif defined(__APPLE__) && defined(__MACH__)
#include <sys/disk.h>
#define IPOD_SECTORSIZE_IOCTL DKIOCGETBLOCKSIZE
/* TODO: Implement this function for Mac OS X */
static void get_geometry(struct ipod_t* ipod)
{
/* Are these universal for all ipods? */
ipod->num_heads = 255;
ipod->sectors_per_track = 63;
}
#else
#error No sector-size detection implemented for this platform
#endif
#if defined(__APPLE__) && defined(__MACH__)
static int ipod_unmount(struct ipod_t* ipod)
{
char cmd[4096];
int res;
sprintf(cmd, "/usr/sbin/diskutil unmount \"%ss2\"",ipod->diskname);
fprintf(stderr,"[INFO] ");
res = system(cmd);
if (res==0) {
return 0;
} else {
perror("Unmount failed");
return -1;
}
}
#endif
void print_error(char* msg)
{
perror(msg);
}
int ipod_open(struct ipod_t* ipod, int silent)
{
ipod->dh=open(ipod->diskname,O_RDONLY);
if (ipod->dh < 0) {
if (!silent) perror(ipod->diskname);
if(errno == EACCES) return -2;
else return -1;
}
/* Read information about the disk */
if(ioctl(ipod->dh,IPOD_SECTORSIZE_IOCTL,&ipod->sector_size) < 0) {
ipod->sector_size=512;
if (!silent) {
fprintf(stderr,"[ERR] ioctl() call to get sector size failed, defaulting to %d\n"
,ipod->sector_size);
}
}
get_geometry(ipod);
return 0;
}
int ipod_reopen_rw(struct ipod_t* ipod)
{
#if defined(__APPLE__) && defined(__MACH__)
if (ipod_unmount(ipod) < 0)
return -1;
#endif
close(ipod->dh);
ipod->dh=open(ipod->diskname,O_RDWR);
if (ipod->dh < 0) {
perror(ipod->diskname);
return -1;
}
return 0;
}
int ipod_close(struct ipod_t* ipod)
{
close(ipod->dh);
return 0;
}
int ipod_alloc_buffer(unsigned char** sectorbuf, int bufsize)
{
*sectorbuf=malloc(bufsize);
if (*sectorbuf == NULL) {
return -1;
}
return 0;
}
int ipod_seek(struct ipod_t* ipod, unsigned long pos)
{
off_t res;
res = lseek(ipod->dh, pos, SEEK_SET);
if (res == -1) {
return -1;
}
return 0;
}
ssize_t ipod_read(struct ipod_t* ipod, unsigned char* buf, int nbytes)
{
return read(ipod->dh, buf, nbytes);
}
ssize_t ipod_write(struct ipod_t* ipod, unsigned char* buf, int nbytes)
{
return write(ipod->dh, buf, nbytes);
}
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