mirror of
https://github.com/nitraiolo/CfgUSBLoader.git
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216 lines
7.3 KiB
C
216 lines
7.3 KiB
C
#ifndef LIBWBFS_H
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#define LIBWBFS_H
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#include "libwbfs_os.h" // this file is provided by the project wanting to compile libwbfs
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#include "wiidisc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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typedef u32 be32_t;
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typedef u16 be16_t;
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typedef struct wbfs_head
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{
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be32_t magic;
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// parameters copied in the partition for easy dumping, and bug reports
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be32_t n_hd_sec; // total number of hd_sec in this partition
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u8 hd_sec_sz_s; // sector size in this partition
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u8 wbfs_sec_sz_s; // size of a wbfs sec
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u8 padding3[2];
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u8 disc_table[0]; // size depends on hd sector size
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}__attribute((packed)) wbfs_head_t ;
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typedef struct wbfs_disc_info
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{
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u8 disc_header_copy[0x100];
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be16_t wlba_table[0];
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}wbfs_disc_info_t;
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// WBFS first wbfs_sector structure:
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//
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// -----------
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// | wbfs_head | (hd_sec_sz)
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// -----------
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// | |
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// | disc_info |
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// | |
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// -----------
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// | |
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// | disc_info |
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// | |
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// -----------
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// | |
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// | ... |
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// | |
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// -----------
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// | |
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// | disc_info |
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// | |
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// -----------
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// | |
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// |freeblk_tbl|
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// | |
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// -----------
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//
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// callback definition. Return 1 on fatal error (callback is supposed to make retries until no hopes..)
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typedef int (*rw_sector_callback_t)(void*fp,u32 lba,u32 count,void*iobuf);
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typedef void (*progress_callback_t)(int status,int total);
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typedef struct wbfs_s
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{
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wbfs_head_t *head;
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/* hdsectors, the size of the sector provided by the hosting hard drive */
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u32 hd_sec_sz;
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u8 hd_sec_sz_s; // the power of two of the last number
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u32 n_hd_sec; // the number of hd sector in the wbfs partition
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/* standard wii sector (0x8000 bytes) */
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u32 wii_sec_sz;
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u8 wii_sec_sz_s;
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u32 n_wii_sec;
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u32 n_wii_sec_per_disc;
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/* The size of a wbfs sector */
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u32 wbfs_sec_sz;
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u32 wbfs_sec_sz_s;
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u16 n_wbfs_sec; // this must fit in 16 bit!
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u16 n_wbfs_sec_per_disc; // size of the lookup table
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u32 part_lba;
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/* virtual methods to read write the partition */
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rw_sector_callback_t read_hdsector;
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rw_sector_callback_t write_hdsector;
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void *callback_data;
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u16 max_disc;
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u32 freeblks_lba;
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u32 *freeblks;
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u16 disc_info_sz;
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u8 *tmp_buffer; // pre-allocated buffer for unaligned read
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u32 n_disc_open;
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}wbfs_t;
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typedef struct wbfs_disc_s
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{
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wbfs_t *p;
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wbfs_disc_info_t *header; // pointer to wii header
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int i; // disc index in the wbfs header (disc_table)
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}wbfs_disc_t;
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#define WBFS_MAGIC (('W'<<24)|('B'<<16)|('F'<<8)|('S'))
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/*! @brief open a MSDOS partitionned harddrive. This tries to find a wbfs partition into the harddrive
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@param read_hdsector,write_hdsector: accessors to a harddrive
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@hd_sector_size: size of the hd sector. Can be set to zero if the partition in already initialized
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@num_hd_sector: number of sectors in this disc. Can be set to zero if the partition in already initialized
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@reset: not implemented, This will format the whole harddrive with one wbfs partition that fits the whole disk.
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calls wbfs_error() to have textual meaning of errors
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@return NULL in case of error
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*/
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wbfs_t*wbfs_open_hd(rw_sector_callback_t read_hdsector,
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rw_sector_callback_t write_hdsector,
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void *callback_data,
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int hd_sector_size, int num_hd_sector, int reset);
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/*! @brief open a wbfs partition
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@param read_hdsector,write_hdsector: accessors to the partition
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@hd_sector_size: size of the hd sector. Can be set to zero if the partition in already initialized
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@num_hd_sector: number of sectors in this partition. Can be set to zero if the partition in already initialized
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@partition_lba: The partitio offset if you provided accessors to the whole disc.
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@reset: initialize the partition with an empty wbfs.
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calls wbfs_error() to have textual meaning of errors
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@return NULL in case of error
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*/
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wbfs_t*wbfs_open_partition(rw_sector_callback_t read_hdsector,
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rw_sector_callback_t write_hdsector,
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void *callback_data,
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int hd_sector_size, int num_hd_sector, u32 partition_lba, int reset);
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/*! @brief close a wbfs partition, and sync the metadatas to the disc */
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void wbfs_close(wbfs_t*);
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/*! @brief open a disc inside a wbfs partition use a 6 char discid+vendorid
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@return NULL if discid is not present
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*/
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wbfs_disc_t *wbfs_open_disc(wbfs_t* p, u8 *diskid);
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/*! @brief close a already open disc inside a wbfs partition */
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void wbfs_close_disc(wbfs_disc_t*d);
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/*! @brief accessor to the wii disc
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@param d: a pointer to already open disc
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@param offset: an offset inside the disc, *points 32bit words*, allowing to access 16GB data
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@param len: The length of the data to fetch, in *bytes*
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*/
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// offset is pointing 32bit words to address the whole dvd, although len is in bytes
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int wbfs_disc_read(wbfs_disc_t*d,u32 offset, u8 *data, u32 len);
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/*! @return the number of discs inside the paritition */
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u32 wbfs_count_discs(wbfs_t*p);
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/*! get the disc info of ith disc inside the partition. It correspond to the first 0x100 bytes of the wiidvd
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http://www.wiibrew.org/wiki/Wiidisc#Header
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@param i: index of the disc inside the partition
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@param header: pointer to 0x100 bytes to write the header
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@size: optional pointer to a 32bit word that will get the size in 32bit words of the DVD taken on the partition.
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*/
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u32 wbfs_get_disc_info(wbfs_t*p, u32 i,u8 *header,int header_size,u32 *size);
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/*! get the number of used block of the partition.
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to be multiplied by p->wbfs_sec_sz (use 64bit multiplication) to have the number in bytes
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*/
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u32 wbfs_count_usedblocks(wbfs_t*p);
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/******************* write access ******************/
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/*! add a wii dvd inside the partition
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@param read_src_wii_disc: a callback to access the wii dvd. offsets are in 32bit, len in bytes!
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@callback_data: private data passed to the callback
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@spinner: a pointer to a function that is regulary called to update a progress bar.
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@sel: selects which partitions to copy.
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@copy_1_1: makes a 1:1 copy, whenever a game would not use the wii disc format, and some data is hidden outside the filesystem.
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*/
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u32 wbfs_add_disc(wbfs_t*p,read_wiidisc_callback_t read_src_wii_disc, void *callback_data,
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progress_callback_t spinner,partition_selector_t sel,int copy_1_1);
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/*! remove a wiidvd inside a partition */
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u32 wbfs_rm_disc(wbfs_t*p, u8* discid);
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/*! trim the file-system to its minimum size
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This allows to use wbfs as a wiidisc container
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*/
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u32 wbfs_trim(wbfs_t*p);
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/*! extract a disc from the wbfs, unused sectors are just untouched, allowing descent filesystem to only really usefull space to store the disc.
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Even if the filesize is 4.7GB, the disc usage will be less.
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*/
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u32 wbfs_extract_disc(wbfs_disc_t*d, rw_sector_callback_t write_dst_wii_sector,void *callback_data,progress_callback_t spinner);
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/*! extract a file from the wii disc filesystem.
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E.G. Allows to extract the opening.bnr to install a game as a system menu channel
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*/
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u32 wbfs_extract_file(wbfs_disc_t*d, char *path);
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// remove some sanity checks
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void wbfs_set_force_mode(int force);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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