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  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #ifndef __IPODIO_H
  21 #define __IPODIO_H
  22
  23 #include <stdint.h>
  24 #include <unistd.h>
  25
  26 #ifdef __WIN32__
  27 #include <windows.h>
  28 #else
  29 #define HANDLE int
  30 #define O_BINARY 0
  31 #endif
  32
  33 /* The maximum number of images in a firmware partition - a guess... */
  34 #define MAX_IMAGES 10
  35
  36 enum firmwaretype_t {
  37    FTYPE_OSOS = 0,
  38    FTYPE_RSRC,
  39    FTYPE_AUPD,
  40    FTYPE_HIBE
  41 };
  42
  43 struct ipod_directory_t {
  44   enum firmwaretype_t ftype;
  45   int id;
  46   uint32_t devOffset; /* Offset of image relative to one sector into bootpart*/
  47   uint32_t len;
  48   uint32_t addr;
  49   uint32_t entryOffset;
  50   uint32_t chksum;
  51   uint32_t vers;
  52   uint32_t loadAddr;
  53 };
  54
  55 /* A fake partition type - DOS partition tables can't include HFS partitions */
  56 #define PARTTYPE_HFS 0xffff
  57
  58 struct partinfo_t {
  59   uint32_t start; /* first sector (LBA) */
  60   uint32_t size;  /* number of sectors */
  61   uint32_t type;
  62 };
  63
  64 struct ipod_t {
  65     HANDLE dh;
  66     char diskname[4096];
  67     int sector_size;
  68     int sectors_per_track;
  69     int num_heads;
  70     struct ipod_directory_t ipod_directory[MAX_IMAGES];
  71     int nimages;
  72     off_t diroffset;
  73     off_t start;  /* Offset in bytes of firmware partition from start of disk */
  74     off_t fwoffset; /* Offset in bytes of start of firmware images from start of disk */
  75     struct partinfo_t pinfo[4];
  76     int modelnum;
  77     char* modelname;
  78     char* modelstr;
  79     char* targetname;
  80     int macpod;
  81 #ifdef WITH_BOOTOBJS
  82     unsigned char* bootloader;
  83     int bootloader_len;
  84 #endif
  85 };
  86
  87 void print_error(char* msg);
  88 int ipod_open(struct ipod_t* ipod, int silent);
  89 int ipod_reopen_rw(struct ipod_t* ipod);
  90 int ipod_close(struct ipod_t* ipod);
  91 int ipod_seek(struct ipod_t* ipod, unsigned long pos);
  92 ssize_t ipod_read(struct ipod_t* ipod, unsigned char* buf, int nbytes);
  93 ssize_t ipod_write(struct ipod_t* ipod, unsigned char* buf, int nbytes);
  94 int ipod_alloc_buffer(unsigned char** sectorbuf, int bufsize);
  95
  96 /* In fat32format.c */
  97 int format_partition(struct ipod_t* ipod, int partition);
  98
  99 #endif