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    FTYPE_OSBK
  44 };
  45
  46 struct ipod_directory_t {
  47   enum firmwaretype_t ftype;
  48   int id;
  49   uint32_t devOffset; /* Offset of image relative to one sector into bootpart*/
  50   uint32_t len;
  51   uint32_t addr;
  52   uint32_t entryOffset;
  53   uint32_t chksum;
  54   uint32_t vers;
  55   uint32_t loadAddr;
  56 };
  57
  58 /* A fake partition type - DOS partition tables can't include HFS partitions */
  59 #define PARTTYPE_HFS 0xffff
  60
  61 struct partinfo_t {
  62   uint32_t start; /* first sector (LBA) */
  63   uint32_t size;  /* number of sectors */
  64   uint32_t type;
  65 };
  66
  67 struct ipod_t {
  68     HANDLE dh;
  69     char diskname[4096];
  70     int sector_size;
  71     int sectors_per_track;
  72     int num_heads;
  73     struct ipod_directory_t ipod_directory[MAX_IMAGES];
  74     int nimages;
  75     int ososimage;
  76     off_t diroffset;
  77     off_t start;  /* Offset in bytes of firmware partition from start of disk */
  78     off_t fwoffset; /* Offset in bytes of start of firmware images from start of disk */
  79     struct partinfo_t pinfo[4];
  80     int modelnum;
  81     char* modelname;
  82     char* modelstr;
  83     char* targetname;
  84     int macpod;
  85     char* xmlinfo;   /* The XML Device Information (if available) */
  86     int xmlinfo_len;
  87     int ramsize;     /* The amount of RAM in the ipod (if available) */
  88 #ifdef WITH_BOOTOBJS
  89     unsigned char* bootloader;
  90     int bootloader_len;
  91 #endif
  92 };
  93
  94 void print_error(char* msg);
  95 int ipod_open(struct ipod_t* ipod, int silent);
  96 int ipod_reopen_rw(struct ipod_t* ipod);
  97 int ipod_close(struct ipod_t* ipod);
  98 int ipod_seek(struct ipod_t* ipod, unsigned long pos);
  99 int ipod_scsi_inquiry(struct ipod_t* ipod, int page_code,
 100                       unsigned char* buf, int bufsize);
 101 ssize_t ipod_read(struct ipod_t* ipod, unsigned char* buf, int nbytes);
 102 ssize_t ipod_write(struct ipod_t* ipod, unsigned char* buf, int nbytes);
 103 int ipod_alloc_buffer(unsigned char** sectorbuf, int bufsize);
 104
 105 /* In fat32format.c */
 106 int format_partition(struct ipod_t* ipod, int partition);
 107
 108 #endif