rbutil/ipodpatcher/ipodio.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006-2007 Dave Chapman
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #ifndef __IPODIO_H
  23 #define __IPODIO_H
  24
  25 #include <stdint.h>
  26 #include <unistd.h>
  27
  28 #ifdef __WIN32__
  29 #include <windows.h>
  30 #else
  31 #define HANDLE int
  32 #define O_BINARY 0
  33 #endif
  34
  35 /* The maximum number of images in a firmware partition - a guess... */
  36 #define MAX_IMAGES 10
  37
  38 enum firmwaretype_t {
  39    FTYPE_OSOS = 0,
  40    FTYPE_RSRC,
  41    FTYPE_AUPD,
  42    FTYPE_HIBE
  43 };
  44
  45 struct ipod_directory_t {
  46   enum firmwaretype_t ftype;
  47   int id;
  48   uint32_t devOffset; /* Offset of image relative to one sector into bootpart*/
  49   uint32_t len;
  50   uint32_t addr;
  51   uint32_t entryOffset;
  52   uint32_t chksum;
  53   uint32_t vers;
  54   uint32_t loadAddr;
  55 };
  56
  57 /* A fake partition type - DOS partition tables can't include HFS partitions */
  58 #define PARTTYPE_HFS 0xffff
  59
  60 struct partinfo_t {
  61   uint32_t start; /* first sector (LBA) */
  62   uint32_t size;  /* number of sectors */
  63   uint32_t type;
  64 };
  65
  66 struct ipod_t {
  67     HANDLE dh;
  68     char diskname[4096];
  69     int sector_size;
  70     int sectors_per_track;
  71     int num_heads;
  72     struct ipod_directory_t ipod_directory[MAX_IMAGES];
  73     int nimages;
  74     off_t diroffset;
  75     off_t start;  /* Offset in bytes of firmware partition from start of disk */
  76     off_t fwoffset; /* Offset in bytes of start of firmware images from start of disk */
  77     struct partinfo_t pinfo[4];
  78     int modelnum;
  79     char* modelname;
  80     char* modelstr;
  81     char* targetname;
  82     int macpod;
  83     char* xmlinfo;   /* The XML Device Information (if available) */
  84     int xmlinfo_len;
  85     int ramsize;     /* The amount of RAM in the ipod (if available) */
  86 #ifdef WITH_BOOTOBJS
  87     unsigned char* bootloader;
  88     int bootloader_len;
  89 #endif
  90 };
  91
  92 void print_error(char* msg);
  93 int ipod_open(struct ipod_t* ipod, int silent);
  94 int ipod_reopen_rw(struct ipod_t* ipod);
  95 int ipod_close(struct ipod_t* ipod);
  96 int ipod_seek(struct ipod_t* ipod, unsigned long pos);
  97 int ipod_scsi_inquiry(struct ipod_t* ipod, int page_code,
  98                       unsigned char* buf, int bufsize);
  99 ssize_t ipod_read(struct ipod_t* ipod, unsigned char* buf, int nbytes);
 100 ssize_t ipod_write(struct ipod_t* ipod, unsigned char* buf, int nbytes);
 101 int ipod_alloc_buffer(unsigned char** sectorbuf, int bufsize);
 102
 103 /* In fat32format.c */
 104 int format_partition(struct ipod_t* ipod, int partition);
 105
 106 #endif