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 #if !defined(_WIN32)
  27 #include <unistd.h>
  28 #elif defined(_MSC_VER)
  29 /* MSVC uses a different name for ssize_t */
  30 #define ssize_t SSIZE_T
  31 #endif
  32
  33 #if defined(__WIN32__) || defined(_WIN32)
  34 #include <windows.h>
  35 #else
  36 #define HANDLE int
  37 #define O_BINARY 0
  38 #endif
  39
  40 /* The maximum number of images in a firmware partition - a guess... */
  41 #define MAX_IMAGES 10
  42
  43 enum firmwaretype_t {
  44    FTYPE_OSOS = 0,
  45    FTYPE_RSRC,
  46    FTYPE_AUPD,
  47    FTYPE_HIBE,
  48    FTYPE_OSBK
  49 };
  50
  51 struct ipod_directory_t {
  52   enum firmwaretype_t ftype;
  53   int id;
  54   uint32_t devOffset; /* Offset of image relative to one sector into bootpart*/
  55   uint32_t len;
  56   uint32_t addr;
  57   uint32_t entryOffset;
  58   uint32_t chksum;
  59   uint32_t vers;
  60   uint32_t loadAddr;
  61 };
  62
  63 /* A fake partition type - DOS partition tables can't include HFS partitions */
  64 #define PARTTYPE_HFS 0xffff
  65
  66 struct partinfo_t {
  67   uint32_t start; /* first sector (LBA) */
  68   uint32_t size;  /* number of sectors */
  69   uint32_t type;
  70 };
  71
  72 struct ipod_t {
  73     HANDLE dh;
  74     char diskname[4096];
  75     int sector_size;
  76     int sectors_per_track;
  77     int num_heads;
  78     struct ipod_directory_t ipod_directory[MAX_IMAGES];
  79     int nimages;
  80     int ososimage;
  81     off_t diroffset;
  82     off_t start;  /* Offset in bytes of firmware partition from start of disk */
  83     off_t fwoffset; /* Offset in bytes of start of firmware images from start of disk */
  84     struct partinfo_t pinfo[4];
  85     int modelnum;
  86     char* modelname;
  87     char* modelstr;
  88     char* targetname;
  89     int macpod;
  90     char* xmlinfo;   /* The XML Device Information (if available) */
  91     int xmlinfo_len;
  92     int ramsize;     /* The amount of RAM in the ipod (if available) */
  93 #ifdef WITH_BOOTOBJS
  94     unsigned char* bootloader;
  95     int bootloader_len;
  96 #endif
  97 };
  98
  99 void ipod_print_error(char* msg);
 100 int ipod_open(struct ipod_t* ipod, int silent);
 101 int ipod_reopen_rw(struct ipod_t* ipod);
 102 int ipod_close(struct ipod_t* ipod);
 103 int ipod_seek(struct ipod_t* ipod, unsigned long pos);
 104 int ipod_scsi_inquiry(struct ipod_t* ipod, int page_code,
 105                       unsigned char* buf, int bufsize);
 106 ssize_t ipod_read(struct ipod_t* ipod, unsigned char* buf, int nbytes);
 107 ssize_t ipod_write(struct ipod_t* ipod, unsigned char* buf, int nbytes);
 108 int ipod_alloc_buffer(unsigned char** sectorbuf, int bufsize);
 109
 110 /* In fat32format.c */
 111 int format_partition(struct ipod_t* ipod, int partition);
 112
 113 #endif