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import VFAT from Genplus for use with WiiSD

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This commit is contained in:
dsbomb 2008-05-01 06:08:04 +00:00
parent 7df8e60875
commit 2feeacec70
10 changed files with 1501 additions and 143 deletions
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2
Makefile.wii
View File

@ -34,7 +34,7 @@ LANG := ENGLISH
#CFLAGS = -g -O2 -Wall $(MACHDEP) $(INCLUDE) -DFCEU_VERSION_NUMERIC=9812 -DNGC=1 -DZLIB -DBIG_ENDIAN -DHAVE_ASPRINTF=1 -DSTDC -D_SZ_ONE_DIRECTORY=1 -D_LZMA_IN_CB=1 -D_LZMA_OUT_READ
CFLAGS = -g -Os -Wall $(MACHDEP) $(INCLUDE) -DFCEU_VERSION_NUMERIC=9812 -DNGC=1 \
-DZLIB -DBIG_ENDIAN -DHAVE_ASPRINTF=1 -DSTDC \
-DZLIB -DBIG_ENDIAN -DWORDS_BIGENDIAN -DHAVE_ASPRINTF=1 -DSTDC \
-D_SZ_ONE_DIRECTORY=1 -D_LZMA_IN_CB=1 -D_LZMA_OUT_READ \
-DINTL_$(LANG)
CXXFLAGS = $(CFLAGS)

145
source/drivers/gamecube/gcdvd.c
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@ -17,12 +17,11 @@
#include "gcdvd.h"
#ifdef HW_RVL
#include "wiisd/sdio.h"
#include "wiisd/tff.h"
#include "wiisd/vfat.h"
/*Front SCARD*/
FATFS frontfs;
FILINFO finfo;
VFATFS vfs;
FSDIRENTRY vfsfile;
#endif
/*** Simplified Directory Entry Record
@ -37,7 +36,6 @@ FILINFO finfo;
#define PAGESIZE 11
#define FCEUDIR "fceu"
#define SAVEDIR "saves"
#define ROMSDIR "roms"
FILEENTRIES filelist[MAXFILES];
@ -561,51 +559,33 @@ int parseWiiSDdirectory() {
int entries = 0;
int nbfiles = 0;
int numstored = 0;
DIRECTORY sddir;
s32 result;
char msg[1024];
/* initialize selection */
selection = offset = 0;
/* Get a list of files from the actual root directory */
result = f_opendir(&sddir, rootWiiSDdir);
if(result != FR_OK) {
sprintf(msg, "f_opendir(%s) failed with %d.", rootWiiSDdir, result);
FSDIRENTRY vfsdir;
int result = VFAT_opendir(0, &vfsdir, rootWiiSDdir);
if(result != FS_SUCCESS) {
sprintf(msg, "Opendir(%s) failed with %d.", rootWiiSDdir, result);
WaitPrompt(msg);
return 0;
}
memset(&finfo, 0, sizeof(finfo));
// f_readdir doesn't seem to find ".." dir, manually add it.
if (strlen(rootWiiSDdir) > 0) {
strcpy(filelist[numstored].filename, "..");
filelist[numstored].length = 0;
filelist[numstored].flags = 1;
while (VFAT_readdir(&vfsdir) == FS_SUCCESS) {
sprintf(msg, "VFAT Adding %s", vfsdir.longname);
ShowAction(msg);
memset (&filelist[numstored], 0, sizeof (FILEENTRIES));
strncpy(filelist[numstored].filename,(char *)(vfsdir.longname), MAX_LONG_NAME);
filelist[numstored].filename[MAX_LONG_NAME-1] = 0;
filelist[numstored].length = vfsdir.fsize;
filelist[numstored].flags = (char)(vfsdir.dirent.attribute & ATTR_DIRECTORY);
numstored++;
nbfiles++;
}
f_readdir(&sddir, &finfo);
finfo.fname[12] = 0;
while(strlen(finfo.fname) != 0) {
finfo.fname[12] = 0;
//if(!(finfo.fattrib & AM_DIR))
//{
if (strcmp((const char*)finfo.fname, ".") != 0) { // Skip "." directory
sprintf(msg, "Adding %s", finfo.fname);
//ShowAction(msg);
memset(&filelist[numstored], 0, sizeof (FILEENTRIES));
strncpy(filelist[numstored].filename,(const char*)finfo.fname,MAXJOLIET);
filelist[numstored].filename[MAXJOLIET-1] = 0;
filelist[numstored].length = finfo.fsize;
filelist[numstored].flags = (char)(finfo.fattrib & AM_DIR);
numstored++;
}
nbfiles++;
//}
memset(&finfo, 0, sizeof(finfo));
f_readdir(&sddir, &finfo);
}
VFAT_closedir(&vfsdir);
entries = nbfiles;
if (entries < 0) entries = 0;
if (entries > MAXFILES) entries = MAXFILES;
@ -786,16 +766,6 @@ void FileSelector() {
maxfiles = parsedir();
}
} else {
#ifdef HW_RVL
if (UseWiiSDCARD) {
strncpy(finfo.fname, filelist[selection].filename, 12);
int l = strlen(finfo.fname);
if (l > 12) l = 12;
finfo.fname[l] = 0;
finfo.fsize = filelist[selection].length;
finfo.fattrib = filelist[selection].flags ? AM_DIR : 0;
}
#endif
rootdir = filelist[selection].offset;
rootdirlength = filelist[selection].length;
// Now load the DVD file to it's offset
@ -817,62 +787,18 @@ int LoadDVDFile( unsigned char *buffer ) {
u64 discoffset;
#ifdef HW_RVL
FIL fp;
u32 bytes_read = 0, bytes_read_total = 0;
if(UseWiiSDCARD) {
ShowAction((char*)"Loading ... Wait");
char filename[1024];
sprintf(filename, "%s/%s", rootWiiSDdir, finfo.fname);
sprintf(filename, "%s/%s", rootWiiSDdir, filelist[selection].filename);
/*if(f_mount(0, &frontfs) != FR_OK) {
WaitPrompt("f_mount failed");
return 0;
}*/
int res = f_stat(filename, &finfo);
if(res != FR_OK) {
int res = VFAT_fopen(0, &vfsfile, filename, FS_READ);
if (res != FS_SUCCESS) {
char msg[1024];
sprintf(msg, "f_stat %s failed, error %d", filename, res);
sprintf(msg, "Open %s failed, error %d", filename, res);
WaitPrompt(msg);
//f_mount(0, NULL);
return 0;
}
res = f_open(&fp, filename, FA_READ);
if (res != FR_OK) {
char msg[1024];
sprintf(msg, "f_open failed, error %d", res);
WaitPrompt(msg);
//f_mount(0, NULL);
return 0;
}
while(bytes_read_total < finfo.fsize) {
if(f_read(&fp, buffer + bytes_read_total, 0x200, &bytes_read) != FR_OK) {
WaitPrompt((char*)"f_read failed");
f_close(&fp);
//f_mount(0, NULL);
return 0;
}
if(bytes_read == 0)
break;
bytes_read_total += bytes_read;
}
if(bytes_read_total < finfo.fsize) {
//printf("error: read %u of %u bytes.\n", bytes_read_total, (unsigned int)finfo.fsize);
WaitPrompt((char*)"read failed : over read!");
f_close(&fp);
//f_mount(0, NULL);
return 0;
}
ShowAction((char*)"Loading Rom Succeeded");
f_close(&fp);
//f_mount(0, NULL);
return bytes_read_total;
}
#endif
@ -887,12 +813,21 @@ int LoadDVDFile( unsigned char *buffer ) {
ShowAction("Loading ... Wait");
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, 2048);
#ifdef HW_RVL
else if (UseWiiSDCARD) VFAT_fread(&vfsfile, &readbuffer, 2048);
#endif
else dvd_read(&readbuffer, 2048, discoffset);
if ( isZipFile() == false ) {
if (UseSDCARD) SDCARD_SeekFile (filehandle, 0, SDCARD_SEEK_SET);
#ifdef HW_RVL
else if (UseWiiSDCARD) VFAT_fseek(&vfsfile, 0, SEEK_SET);
#endif
for ( i = 0; i < blocks; i++ ) {
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, 2048);
#ifdef HW_RVL
else if (UseWiiSDCARD) VFAT_fread(&vfsfile, &readbuffer, 2048);
#endif
else dvd_read(&readbuffer, 2048, discoffset);
memcpy(&buffer[offset], &readbuffer, 2048);
offset += 2048;
@ -903,6 +838,9 @@ int LoadDVDFile( unsigned char *buffer ) {
if( rootdirlength % 2048 ) {
i = rootdirlength % 2048;
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, i);
#ifdef HW_RVL
else if (UseWiiSDCARD) VFAT_fread(&vfsfile, &readbuffer, i);
#endif
else dvd_read(&readbuffer, 2048, discoffset);
memcpy(&buffer[offset], &readbuffer, i);
}
@ -910,6 +848,9 @@ int LoadDVDFile( unsigned char *buffer ) {
return unzipDVDFile( buffer, (u32)discoffset, rootdirlength);
}
if (UseSDCARD) SDCARD_CloseFile (filehandle);
#ifdef HW_RVL
else if (UseWiiSDCARD) VFAT_fclose(&vfsfile);
#endif
return rootdirlength;
}
@ -965,13 +906,17 @@ int OpenWiiSD () {
haveSDdir = 0;
char msg[128];
memset(&vfs, 0, sizeof(VFATFS));
if (haveWiiSDdir == 0) {
/* don't mess with DVD entries */
havedir = 0;
/* Mount WiiSD */
if(f_mount(0, &frontfs) != FR_OK) {
WaitPrompt((char*)"f_mount failed");
/* Mount WiiSD with VFAT */
VFAT_unmount(0, &vfs);
int res = VFAT_mount(FS_SLOTA, &vfs);
if (res != FS_TYPE_FAT16) {
sprintf(msg, "Error mounting WiiSD: %d", res);
WaitPrompt(msg);
return 0;
}
@ -992,13 +937,11 @@ int OpenWiiSD () {
/* no entries found */
sprintf (msg, "Error reading %s", rootWiiSDdir);
WaitPrompt (msg);
//f_mount(0, NULL);
return 0;
}
}
/* Retrieve previous entries list and made a new selection */
else FileSelector ();
//f_mount(0, NULL);
return 1;
}

14
source/drivers/gamecube/info.c
View File

@ -52,9 +52,15 @@ extern int UseSDCARD;
extern unsigned char DecodeJoy( unsigned short pp );
extern unsigned char GetAnalog(int Joy);
#ifdef HW_RVL
void (*PSOReload)() = (void(*)())0x90000020;
#else
void (*PSOReload)() = (void(*)())0x80001800;
#endif
void Reboot() {
#ifdef HW_RVL
// Thanks to hell_hibou
// Thanks to eke-eke
SYS_ResetSystem(SYS_RETURNTOMENU, 0, 0);
#else
#define SOFTRESET_ADR ((volatile u32*)0xCC003024)
@ -1002,12 +1008,6 @@ int MainMenu() {
short j;
int redraw = 1;
#ifdef HW_RVL
void (*PSOReload)() = (void(*)())0x90000020;
#else
void (*PSOReload)() = (void(*)())0x80001800;
#endif
/*** Stop any running Audio ***/
AUDIO_StopDMA();

7
source/drivers/gamecube/main.c
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@ -45,13 +45,8 @@ long long basetime;
void FCEUD_Update(uint8 *XBuf, int32 *Buffer, int Count);
extern void *PSOReload();
static void reset_cb() {
#ifdef HW_RVL
void (*PSOReload)() = (void(*)())0x90000020;
#else
void (*PSOReload)() = (void(*)())0x80001800;
#endif
PSOReload();
}

10
source/drivers/gamecube/memstate.c
View File

@ -44,7 +44,8 @@ int mcversion = 0x981211;
static u8 SysArea[CARD_WORKAREA] ATTRIBUTE_ALIGN(32);
#ifdef HW_RVL
extern FILINFO finfo;
FATFS frontfs;
FILINFO finfo;
#endif
extern int ChosenSlot;
extern int ChosenDevice;
@ -545,6 +546,13 @@ void SD_Manage(int mode, int slot) {
int res;
u32 offset = 0;
/* Mount WiiSD with TinyFatFS*/
if(f_mount(0, &frontfs) != FR_OK) {
WaitPrompt((char*)"f_mount failed");
return 0;
}
memset(&finfo, 0, sizeof(finfo));
if (mode == 0)
res = f_open(&fp, path, FA_CREATE_ALWAYS | FA_WRITE);
else {

49
source/drivers/gamecube/wiisd/sdio.c
View File

@ -29,6 +29,8 @@ static s32 sd_fd = -1;
static u32 status __attribute__((aligned(32)));
s32 sd_deinit();
s32 sd_send_cmd(u32 cmd, u32 type, u32 resp, u32 arg, u32 blocks, u32 bsize, u32 addr)
{
static u32 request[9] __attribute__((aligned(32)));
@ -45,12 +47,12 @@ s32 sd_send_cmd(u32 cmd, u32 type, u32 resp, u32 arg, u32 blocks, u32 bsize, u32
request[4] = blocks;
request[5] = bsize;
request[6] = addr;
request[7] = 0;
request[8] = 0;
//request[7] = 0;
//request[8] = 0;
r = IOS_Ioctl(sd_fd, 7, (u8 *)request, 36, (u8 *)reply, 0x10);
printf("sd_send_cmd(%x, %x, %x, %x, %x, %x, %x) = %d", cmd, type, resp, arg, blocks, bsize, addr, r);
printf(" -> %x %x %x %x\n", reply[0], reply[1], reply[2], reply[3]); // TODO: add some argument for this reply
//printf("sd_send_cmd(%x, %x, %x, %x, %x, %x, %x) = %d", cmd, type, resp, arg, blocks, bsize, addr, r);
//printf(" -> %x %x %x %x\n", reply[0], reply[1], reply[2], reply[3]); // TODO: add some argument for this reply
return r;
}
@ -60,7 +62,7 @@ s32 sd_reset()
s32 r;
r = IOS_Ioctl(sd_fd, 4, 0, 0, (u8 *)&status, 4);
printf("sd_reset(): r = %d; status = %d\n", r, status);
//printf("sd_reset(): r = %d; status = %d\n", r, status);
return r;
}
@ -69,15 +71,7 @@ s32 sd_select()
s32 r;
r = sd_send_cmd(7, 3, 2, status & 0xFFFF0000, 0, 0, 0);
printf("sd_select(): r = %d\n", r);
return r;
}
s32 sd_deselect()
{
s32 r;
r = sd_send_cmd(7, 3, 2, 0, 0, 0, 0);
printf("sd_deselect(): r = %d\n", r);
//printf("sd_select(): r = %d\n", r);
return r;
}
@ -86,7 +80,7 @@ s32 sd_set_blocklen(u32 len)
s32 r;
r = sd_send_cmd(0x10, 3, 1, len, 0, 0, 0);
printf("sd_set_blocklen(%x) = %d\n", len, r);
//printf("sd_set_blocklen(%x) = %d\n", len, r);
return r;
}
@ -101,10 +95,10 @@ u8 sd_get_hcreg()
query[0] = 0x28;
query[3] = 1;
query[4] = 0;
//query[4] = 0;
r = IOS_Ioctl(sd_fd, 2, (u8 *)query, 0x18, (u8 *)&data, 4);
printf("sd_get_hcreg() = %d; r = %d\n", data & 0xFF, r);
//printf("sd_get_hcreg() = %d; r = %d\n", data & 0xFF, r);
return data & 0xFF;
}
@ -120,7 +114,7 @@ s32 sd_set_hcreg(u8 value)
query[4] = value;
r = IOS_Ioctl(sd_fd, 1, (u8 *)query, 0x18, 0, 0);
printf("sd_set_hcreg(%d) = %d\n", value, r);
//printf("sd_set_hcreg(%d) = %d\n", value, r);
return r;
}
@ -151,7 +145,7 @@ s32 sd_clock()
c = 1;
r = IOS_Ioctl(sd_fd, 6, &c, 4, 0, 0);
printf("sd_clock() = %d\n", r);
//printf("sd_clock() = %d\n", r);
return r;
}
@ -195,8 +189,8 @@ s32 sd_read(u32 n, u8 *buf)
if(r != 0)
{
printf("sd_read() = %d\n", r);
printf(" %x %x %x %x\n", res[0], res[1], res[2], res[3]);
//printf("sd_read() = %d\n", r);
//printf(" %x %x %x %x\n", res[0], res[1], res[2], res[3]);
return r;
}
@ -241,8 +235,8 @@ s32 sd_write(u32 n, const u8 *buf)
if(r != 0)
{
printf("sd_write() = %d\n", r);
printf(" %x %x %x %x\n", res[0], res[1], res[2], res[3]);
//printf("sd_write() = %d\n", r);
//printf(" %x %x %x %x\n", res[0], res[1], res[2], res[3]);
return r;
}
@ -255,12 +249,13 @@ s32 sd_init()
if(sd_fd > 0)
{
printf("sd_init() called more than once. using old sd_fd: %d\n", sd_fd);
return 0;
//printf("sd_init() called more than once. using old sd_fd: %d\n", sd_fd);
//return 0;
sd_deinit();
}
sd_fd = IOS_Open("/dev/sdio/slot0", 0);
printf("sd_fd = %d\n", sd_fd);
//printf("sd_fd = %d\n", sd_fd);
if(sd_fd < 0)
return sd_fd;
@ -287,7 +282,7 @@ s32 sd_init()
s32 sd_deinit()
{
sd_deselect();
sd_reset();
return IOS_Close(sd_fd);
}

93
source/drivers/gamecube/wiisd/vdiskio.c Normal file
View File

@ -0,0 +1,93 @@
/****************************************************************************
* FAT16 - VFAT Support
*
* NOTE: Only supports FAT16 with Long File Names
* I have no interest in adding FAT32
*
* Reference Documentation:
*
* FAT: General Overview of On-Disk Format
* Version 1.02 May 05, 1999
* Microsoft Corporation
*
* FAT: General Overview of On-Disk Format
* Version 1.03 December 06, 2000
* Microsoft Corporation
*
* This is targetted at MMC/SD cards.
*
* Copyright softdev 2007. All rights reserved.
*
* Diskio Module
* -------------
*
* This module is almost identical to the one found in ChaN's TinyFAT FS.
* It's a logical abstration after all :)
*
* This covers stdio file on a SD image file
*
* 03/08: quickly modified by eke-eke to support Wii Front SD
****************************************************************************/
#include <gccore.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sdio.h"
#include "vfat.h"
#define CARDIO_ERROR_READY 0
/* End of not so public exports */
/****************************************************************************
* DISKIO_Init
*
* Initialise communication with the disc
****************************************************************************/
int DISKIO_Init( int drive )
{
int res;
if ( drive < 0 || drive > 1 )
return FS_ERR_PARAM;
res = sd_init();
if ( res == CARDIO_ERROR_READY )
return FS_SUCCESS;
return FS_ERR_IO;
}
/****************************************************************************
* DISKIO_ReadSectors
*
* Read sectors from the disc
****************************************************************************/
int DISKIO_ReadSectors( int drive, void *buffer, int sector, int count )
{
int res = -1;
int i;
int bytes = 0;
if ( drive != 0 && drive != 1 )
return FS_ERR_PARAM; /* Must be 0 or 1 */
/* libOGC appears to only read in single sectors */
for( i = 0; i < count; i++ )
{
res = sd_read(sector + i, buffer + bytes);
if ( res != CARDIO_ERROR_READY )
return FS_ERR_IO;
bytes += SECTOR_SIZE;
}
if ( res == CARDIO_ERROR_READY )
return FS_SUCCESS;
return FS_ERR_IO;
}

36
source/drivers/gamecube/wiisd/vdiskio.h Normal file
View File

@ -0,0 +1,36 @@
/****************************************************************************
* FAT16 - VFAT Support
*
* NOTE: Only supports FAT16 with Long File Names
* I have no interest in adding FAT32
*
* Reference Documentation:
*
* FAT: General Overview of On-Disk Format
* Version 1.02 May 05, 1999
* Microsoft Corporation
*
* FAT: General Overview of On-Disk Format
* Version 1.03 December 06, 2000
* Microsoft Corporation
*
* This is targetted at MMC/SD cards.
*
* Copyright softdev 2007. All rights reserved.
*
* Diskio Module
* -------------
*
* This module is almost identical to the one found in ChaN's TinyFAT FS.
* It's a logical abstration after all :)
*
* This covers stdio file on a SD image file
****************************************************************************/
#ifndef __DISKIO__
#define __DISKIO__
int DISKIO_Init( int drive );
int DISKIO_ReadSectors( int drive, void *buffer, int sector, int count );
#endif

924
source/drivers/gamecube/wiisd/vfat.c Normal file
View File

@ -0,0 +1,924 @@
/****************************************************************************
* FAT16 - VFAT Support
*
* NOTE: Only supports FAT16 with Long File Names
* I have no interest in adding FAT32
*
* Reference Documentation:
*
* FAT: General Overview of On-Disk Format
* Version 1.02 May 05, 1999
* Microsoft Corporation
*
* FAT: General Overview of On-Disk Format
* Version 1.03 December 06, 2000
* Microsoft Corporation
*
* This is targetted at MMC/SD cards.
*
* Copyright softdev 2007. All rights reserved.
*
* $Date: 2007-08-05 14:27:48 +0100 (Sun, 05 Aug 2007) $
* $Rev: 8 $
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "vfat.h"
#include "vdiskio.h"
static BYTE sector[SECTOR_SIZE]; /**< Local sector buffer */
static VFATFS *vfs[2]; /**< VFATFS Pointers for 2 drives */
#ifdef WORDS_BIGENDIAN
#define strcasecmp stricmp
#endif
/**
* Z E R O S E C T O R / B I O S P A R A M E T E R B L O C K
*
* These functions take care of parsing the 0th sector/BPB
* Supports SuperFloppy Format and standard partitioning.
*
*/
/**\defgroup INTERNALS VFATFS Private Functions
* \brief These are internal helper functions and should
* not be called by an application!\n
* They are documented here for convenience only.
*/
/**\ingroup INTERNALS
* \brief Check for BIOS Parameter Block
* \param sector 512 byte sector data
* \return FS_TYPE_FAT16 on success
*/
static int BPBCheck( BYTE *sector )
{
BPB16 *bpb = (BPB16 *)sector;
/* Check signatures */
if ( ( bpb->sigkey1 == 0x55 ) && ( bpb->sigkey2 == 0xAA ) )
{
/* Check for FAT16 signature */
if ( memcmp(bpb->FilSysType, "FAT16", 5) == 0 )
return FS_TYPE_FAT16;
/* Non MS utilities simply put FAT */
if ( memcmp(bpb->FilSysType, "FAT", 3) == 0 )
return FS_TYPE_FAT16;
}
return FS_TYPE_NONE;
}
/** \ingroup INTERNALS
* \brief Partition Entry Check
* \param sector 512 byte sector data
* \return Partition Start LBA on success
*/
static unsigned int PECheck( BYTE *sector )
{
int i;
PARTENTRY *pe;
if ( ( sector[SECTOR_SIZE-2] == 0x55 ) && ( sector[SECTOR_SIZE-1] == 0xAA ) )
{
/* Find a FAT16 partition entry */
for( i = 0; i < 4; i++ )
{
pe = (PARTENTRY *)(sector + 446 + (i<<4));
if ( pe->partitiontype == 0x06 )
{
return SWAP32(pe->partitionstart);
}
}
}
return FS_TYPE_NONE;
}
/****************************************************************************
* VFAT_Mount
*
* Function to mount a FAT16-VFAT volume
***************************************************************************/
int VFAT_mount( int driveid, VFATFS *v )
{
int ret;
unsigned int bpbsector = 0;
BPB16 *bpb = (BPB16 *)sector;
BYTE media = 0;
if ( driveid < 0 || driveid > 1 )
return FS_TYPE_NONE;
memset(v, 0, sizeof(VFATFS));
/* Copy pointer */
vfs[driveid] = v;
if ( DISKIO_Init( driveid ) != FS_SUCCESS )
return FS_ERR_IO;
if ( DISKIO_ReadSectors( driveid, sector, 0, 1 ) != FS_SUCCESS )
return FS_ERR_IO;
/* Check for SuperFloppy Format */
ret = BPBCheck( sector );
if ( ret == FS_TYPE_NONE )
{
/* Check for Partition Entry */
bpbsector = PECheck(sector);
if ( !bpbsector )
return FS_TYPE_NONE;
if ( DISKIO_ReadSectors( driveid, sector, bpbsector, 1 ) != FS_SUCCESS )
return FS_ERR_IO;
/* Check BPB */
ret = BPBCheck( sector );
}
if ( ret == FS_TYPE_FAT16 )
{
/* Capture defaults to machine native format */
v->BaseOffset = bpbsector;
v->BytesPerSector = SWAP16(bpb->bytesPerSec);
v->SectorsPerFAT = SWAP16(bpb->FATsz16);
v->ReservedSectors = SWAP16(bpb->reservedSec);
v->NumberOfFATs = bpb->numFATs;
v->SectorsPerCluster = bpb->secPerClust;
v->RootDirEntries = SWAP16(bpb->rootEntCount);
/* Calculate number of root directory sectors */
v->RootDirSectors = ( ( SWAP16(bpb->rootEntCount) << 5 ) + ( v->BytesPerSector - 1 ) ) / v->BytesPerSector;
/* First data sector */
v->FirstDataSector = v->ReservedSectors + (v->NumberOfFATs * v->SectorsPerFAT) + v->RootDirSectors + v->BaseOffset;
/* Total sectors */
if ( bpb->totSec16 == 0 )
v->TotalSectors = SWAP32(bpb->totSec32);
else
v->TotalSectors = SWAP16(bpb->totSec16);
/* Data Sectors */
v->DataSectors = v->TotalSectors - ( v->ReservedSectors + ( v->NumberOfFATs * v->SectorsPerFAT ) + v->RootDirSectors );
/* Count of clusters */
v->CountOfClusters = v->DataSectors / bpb->secPerClust;
/* From v1.03 Document - Page 14 - FAT Type Determination */
if ( v->CountOfClusters < 4085 )
return FS_TYPE_NONE; /* FAT12 Volume */
else
{
if ( v->CountOfClusters >= 65525 )
return FS_TYPE_NONE; /* FAT32 Volume */
}
/* Root Directory Offset */
v->RootDirOffset = v->ReservedSectors + ( bpb->numFATs * v->SectorsPerFAT ) + v->BaseOffset;
/* First copy of FAT offset */
v->FirstFATOffset = v->ReservedSectors + v->BaseOffset;
media = bpb->media;
/* Read first FAT */
if ( DISKIO_ReadSectors( driveid, sector, v->FirstFATOffset, 1 ) != FS_SUCCESS )
return FS_ERR_IO;
if ( sector[0] == media )
{
/* Allocate work spaces */
v->FAT = (WORD *)malloc(v->SectorsPerFAT * SECTOR_SIZE);
if ( v->FAT == NULL )
return FS_ERR_NOMEM;
/* Save time running in and out - just load up the FAT table */
if ( DISKIO_ReadSectors(driveid, v->FAT, v->FirstFATOffset, v->SectorsPerFAT) != FS_SUCCESS )
{
free(v->FAT);
return FS_ERR_IO;
}
/* Likewise, the same for the root directory */
v->rootDir = (BYTE *)malloc(v->BytesPerSector * v->RootDirSectors);
if ( v->rootDir == NULL )
{
free(v->FAT);
return FS_ERR_NOMEM;
}
/* Read root directory */
if ( DISKIO_ReadSectors(driveid, v->rootDir, v->RootDirOffset, v->RootDirSectors) != FS_SUCCESS )
{
free(v->FAT);
free(v->rootDir);
return FS_ERR_IO;
}
return FS_TYPE_FAT16;
}
}
return FS_TYPE_NONE;
}
/****************************************************************************
* VFAT_unmount
*
* Release memory allocated by from a mounted VFATFS
****************************************************************************/
void VFAT_unmount( int driveid, VFATFS *v )
{
if ( v->FAT != NULL )
free(v->FAT);
if ( v->rootDir != NULL )
free(v->rootDir);
vfs[driveid] = NULL;
}
/**
* F I L E N A M I N G S U P P O R T
*
* Routines to en/decode long and short file names
*/
/****************************************************************************
* CalcShortNameChecksum
*
* Calculate the checksum for a short filename
* Filename should be in UPPER case, and padded with spaces to match
* a standard directory entry
****************************************************************************/
/** \ingroup INTERNALS
* \brief Calculate the checksum of a short directory name
* \param fname 11 character, space padded short directory name
* \return checksum
*/
static unsigned char CalcShortNameCheckSum( BYTE *fname )
{
int i;
unsigned char sum = 0;
for( i = 0; i < 11; i++ )
sum = ( ( sum & 1 ) ? 0x80 : 0 ) + ( sum >> 1 ) + fname[i];
return sum;
}
/****************************************************************************
* BuildShortNameFromDirEntry
*
* User friendly shortname
****************************************************************************/
/** \ingroup INTERNALS
* \brief Convert a short directory entry to an application friendly name
* \param sfn SFNDIRREC pointer
* \param out Buffer to hold converted file name
* \return None
*/
static void BuildShortNameFromDirEntry( SFNDIRREC *sfn, BYTE *out )
{
int i,j;
for(i = 0, j = 0; i < 11; i++ )
{
if ( sfn->dirname[i] != 32 )
{
out[j++] = sfn->dirname[i];
}
if ( (i == 7) && ( sfn->dirname[8] != 32 ) )
out[j++] = '.';
}
}
/****************************************************************************
* BuildLongNameFromDirEntry
*
* Build a long name from unicode to asciiz.
* Each directory entry may contain up to 13 characters for sub entry.
****************************************************************************/
/** \ingroup INTERNALS
* \brief Build a long file name as ASCIIZ
* \param lfn LFNDIRREC pointer
* \param position LFN directory record number
* \param out Output buffer
* \return None.
*/
static void BuildLongNameFromDirEntry( LFNDIRREC *lfn, int position, BYTE *out )
{
int j = ( ( position - 1 ) * 13 );
int i;
/* Part one */
for( i = 0; i < 10; i += 2 )
{
if ( lfn->dirname1[i] == 0xFF )
return;
out[j++] = lfn->dirname1[i];
}
/* Part two */
for( i = 0; i < 12; i += 2 )
{
if ( lfn->dirname2[i] == 0xFF )
return;
out[j++] = lfn->dirname2[i];
}
/* Part three */
for( i = 0; i < 4; i += 2 )
{
if ( lfn->dirname3[i] == 0xFF )
return;
out[j++] = lfn->dirname3[i];
}
}
/**
* D I R E C T O R Y F U N C T I O N S
*
* These routines take care of all directory level parsing
*/
/** \ingroup INTERNALS
* \brief Retrieve first sector number of a cluster
* \param drive Device drive number
* \param cluster Cluster number to determine first sector of
* \return First sector of cluster
*/
static int SectorFromCluster( int drive, int cluster )
{
VFATFS *v = vfs[drive];
return ( ( cluster - 2 ) * v->SectorsPerCluster ) + v->FirstDataSector;
}
/** \ingroup INTERNALS
* \brief Read a complete cluster
* \param d FSDIRENTRY pointer. CurrentCluster is used
* \return FS_SUCCESS on success
*/
static int ReadCluster( FSDIRENTRY *d )
{
int sector;
sector = SectorFromCluster( d->driveid, d->CurrentCluster );
if ( DISKIO_ReadSectors( d->driveid, d->clusterdata, sector, vfs[d->driveid]->SectorsPerCluster) != FS_SUCCESS )
return FS_ERR_IO;
d->CachedCluster = d->CurrentCluster;
return FS_SUCCESS;
}
/** \ingroup INTERNALS
* \brief Update entry with next cluster in chain
* \param d FSDIRENTRY pointer. CurrentCluster is used
* \return True on success
*/
static int NextCluster( FSDIRENTRY *d )
{
d->CurrentCluster = SWAP16(vfs[d->driveid]->FAT[d->CurrentCluster]);
if ( d->CurrentCluster >= CLUSTER_END_CHAIN )
return 0;
return 1;
}
/****************************************************************************
* FindEntry
*
* Look through a directory tree looking for an active entry.
* The current cluster should be available in d->clusterdata
****************************************************************************/
/** \ingroup INTERNALS
* \param d FSDIRENTRY pointer
* \param maxentries Maximum directory entries held in cluster
* \return True if found, False if not found
*/
static int FindEntry( FSDIRENTRY *d, int maxentries )
{
int found = 0;
unsigned char *direntry;
VFATFS *v = vfs[d->driveid];
SFNDIRREC *sfn;
LFNDIRREC *lfn;
static BYTE checksum = 0;
if ( !d->crosscluster )
{
/* Clear names */
memset(d->shortname, 0, 13);
memset(d->longname, 0, MAX_LONG_NAME);
}
while( d->CurrentDirEntry < maxentries && !found )
{
/* Pointer to this directory entry */
if ( d->CurrentCluster == ROOTCLUSTER )
direntry = (v->rootDir + ( d->CurrentDirEntry << 5 ) );
else
direntry = (d->clusterdata + ( d->CurrentDirEntry << 5 ) );
switch( direntry[0] )
{
case 0x00:
case 0xE5:
break; /* Inactive entries */
default:
sfn = (SFNDIRREC *)direntry;
d->crosscluster = 1;
if ( ( sfn->attribute & ATTR_LONG_NAME_MASK ) == ATTR_LONG_NAME )
{
if ( direntry[0] & LFN_LAST_ENTRY )
memset(&d->longname, 0, MAX_LONG_NAME);
lfn = (LFNDIRREC *)direntry;
BuildLongNameFromDirEntry( lfn, direntry[0] & LFN_ENTRY_MASK, d->longname);
checksum = lfn->checksum;
}
else
{
/* Short name entry */
found = 1;
memcpy(&d->dirent, direntry, 32);
BuildShortNameFromDirEntry( sfn, d->shortname );
d->fsize = SWAP32(sfn->filesize);
d->crosscluster = 0;
/* Ensure long name is populated with something */
if ( strlen((char *)d->longname) == 0 )
{
strcpy((char *)d->longname, (char *)d->shortname);
return found;
}
else
{
/* If checksums don't match - the FS is inconsistent
To do no harm, skip this entry */
if ( checksum == CalcShortNameCheckSum(sfn->dirname) )
return found;
else
found = 0;
}
}
}
d->CurrentDirEntry++;
}
return found;
}
/****************************************************************************
* FindInRootDirectory
*
* Root directory is somewhat special. It's a fixed length and has no entry
* in the FAT as such.
*
* Logically, this should be the first 2 clusters, but the spec says it can
* be set to any size by the format utility (Think NT! FAT64/128/256)
*
* For speed, as all searches begin here, the root directory is held in
* memory throughout.
*
* FSDIRENTRY should only have the drive id set.
****************************************************************************/
/** \ingroup INTERNALS
* \brief Find an entry in the root directory
* \param d FSDIRENTRY pointer
* \param search Name to find
* \return True if found, False if not
*/
static int FindInRootDirectory( FSDIRENTRY *d, char *search )
{
int found = 0;
d->CurrentDirEntry++;
while( (FindEntry(d, vfs[d->driveid]->RootDirEntries)) && !found )
{
if ( strcasecmp(search, (char *) d->shortname) == 0 )
{
found = 1;
}
if ( strcasecmp(search, (char *) d->longname) == 0 )
{
found = 1;
}
if ( !found )
d->CurrentDirEntry++;
}
return found;
}
/****************************************************************************
* FindInClusters
*
* Generic routine to find a given name in a chain of clusters.
* Used for non-Root Directory searching
****************************************************************************/
/** \ingroup INTERNALS
* \brief Find a directory record in a cluster chain
* \param d FSDIRENTRY pointer
* \param findme Name of directory record to find
* \return True if found, False if not
*/
static int FindInClusters( FSDIRENTRY *d, char *findme )
{
int found = 0;
if ( d->CurrentDirEntry == -1 )
d->CurrentDirEntry = 0;
/* While not at end of chain */
while( !found && ( d->CurrentCluster < CLUSTER_END_CHAIN ) )
{
/* Retrieve dir entries looking for match */
while( !found && (FindEntry( d, ( vfs[d->driveid]->BytesPerSector * vfs[d->driveid]->SectorsPerCluster) >> 5 ) ) )
{
if ( strcasecmp((char *)d->shortname, findme) == 0 )
found = 1;
if ( strcasecmp((char *)d->longname, findme) == 0 )
found = 1;
if (!found)
d->CurrentDirEntry++;
}
/* Read next cluster */
if ( !found )
{
if ( NextCluster(d) )
{
d->CurrentDirEntry = 0;
ReadCluster(d);
}
}
}
return found;
}
/****************************************************************************
* VFAT_opendir
*
* Find the requested directory.
****************************************************************************/
int VFAT_opendir( int drive, FSDIRENTRY *d, char *search )
{
char *p;
char srchtmp[1024];
int searchroot = 1;
int found = 0;
/* Clear out FSDIRENTRY */
memset(d, 0, sizeof(FSDIRENTRY));
/* Set drive and root */
d->driveid = drive;
d->CurrentCluster = ROOTCLUSTER;
d->CurrentDirEntry = -1;
/* Is this a request for root ? */
if ( ( strlen(search) == 0 ) || ( strcmp(search,PSEPS) == 0 ) || ( strcmp(search, DIR_ROOT) == 0 ) )
{
return FS_FILE_OK;
}
/* Searching for a sub-directory */
if ( search[0] == PSEP )
strcpy(srchtmp, &search[1]);
else
strcpy(srchtmp, search);
p = strtok(srchtmp, PSEPS);
while ( p )
{
found = 0;
if ( searchroot )
{
if ( !FindInRootDirectory(d, p) )
return FS_NO_FILE;
else
{
/* MUST be a directory */
if ( d->dirent.attribute & ATTR_DIRECTORY )
{
d->CurrentCluster = d->FirstCluster = SWAP16(d->dirent.fstClustLow);
d->CurrentDirEntry = -1;
/* Allocate the cluster for this data record */
d->clusterdata = (BYTE *)malloc(vfs[d->driveid]->SectorsPerCluster * vfs[d->driveid]->BytesPerSector);
ReadCluster(d);
found = 1;
searchroot = 0;
}
else
return FS_NO_FILE;
}
}
else
{
if ( FindInClusters( d, p ) )
{
/* MUST be a directory */
if ( !( d->dirent.attribute & ATTR_DIRECTORY ) )
{
free(d->clusterdata);
return FS_NO_FILE;
}
/* Read up this cluster */
d->CurrentCluster = d->FirstCluster = SWAP16(d->dirent.fstClustLow);
d->CurrentDirEntry = 0;
ReadCluster(d);
found = 1;
}
}
p = strtok(NULL, PSEPS);
}
if ( !found )
{
if ( d->clusterdata != NULL )
{
free(d->clusterdata);
d->clusterdata = NULL;
}
return FS_NO_FILE;
}
return FS_FILE_OK;
}
/****************************************************************************
* VFAT_readdir
****************************************************************************/
int VFAT_readdir( FSDIRENTRY *d )
{
int ret;
d->CurrentDirEntry++;
/* Are we in root ? */
if ( d->CurrentCluster == ROOTCLUSTER )
{
if( FindEntry( d, vfs[d->driveid]->RootDirEntries ) )
return FS_FILE_OK;
}
else
{
while( d->CurrentCluster < CLUSTER_END_CHAIN )
{
ret = FindEntry( d, ( vfs[d->driveid]->BytesPerSector * vfs[d->driveid]->SectorsPerCluster) >> 5 );
if ( ret )
return FS_FILE_OK;
if ( NextCluster(d) )
{
d->CurrentDirEntry = 0;
ReadCluster(d);
}
}
}
return FS_NO_FILE;
}
/****************************************************************************
* VFAT_closedir
****************************************************************************/
void VFAT_closedir( FSDIRENTRY *d )
{
if ( d->clusterdata != NULL )
{
free(d->clusterdata);
d->clusterdata = NULL;
}
}
/****************************************************************************
* VFAT_fopen
*
* v0.1 - VFAT_READ_ONLY Supported
****************************************************************************/
int VFAT_fopen( int drive, FSDIRENTRY *d, char *fname, int mode )
{
char filename[1024];
char path[1024];
char temp[1024];
char *p;
if ( drive < 0 || drive > 1 )
return FS_NO_FILE;
if ( mode != FS_READ )
return FS_NO_FILE;
/* Clear */
memset(d, 0, sizeof(FSDIRENTRY));
d->driveid = drive;
path[0] = temp[0] = filename[0] = 0;
if ( fname[0] == PSEP )
strcpy(temp, &fname[1]);
else
strcpy(temp, fname);
/* Split into filename and path */
p = strrchr(temp, PSEP);
if ( p )
{
/* Have path and filename */
*p = 0;
strcpy(path, temp);
p++;
strcpy(filename, p);
}
else
strcpy(filename, temp);
/* Do search */
if ( strlen(path) )
{
if ( VFAT_opendir(drive, d, path) != FS_FILE_OK )
{
VFAT_closedir(d);
return FS_NO_FILE;
}
if ( !FindInClusters( d, filename ) )
{
VFAT_closedir(d);
return FS_NO_FILE;
}
}
else
{
/* Much simpler check on root directory */
d->CurrentCluster = ROOTCLUSTER;
d->CurrentDirEntry = -1;
if ( !FindInRootDirectory( d, filename ) )
{
VFAT_closedir(d);
return FS_NO_FILE;
}
d->clusterdata = (BYTE *)malloc(vfs[d->driveid]->SectorsPerCluster * vfs[d->driveid]->BytesPerSector);
}
/* Must be a file only */
if ( d->dirent.attribute & ( ATTR_DIRECTORY | ATTR_VOLUME_ID ) )
{
VFAT_closedir(d);
return FS_NO_FILE;
}
d->FirstCluster = d->CurrentCluster = SWAP16(d->dirent.fstClustLow);
d->CachedCluster = -1;
return FS_FILE_OK;
}
/****************************************************************************
* VFAT_fclose
****************************************************************************/
void VFAT_fclose( FSDIRENTRY *d )
{
VFAT_closedir(d);
}
/****************************************************************************
* VFAT_fread
****************************************************************************/
int VFAT_fread( FSDIRENTRY *d, void *buffer, int length )
{
int cluster;
int tbytes;
int umask;
int i;
int bytesdone = 0;
int reallength;
BYTE *p = (BYTE *)buffer;
if ( length <= 0 )
return 0;
/* Determine which cluster in the chain we are in */
tbytes = ( vfs[d->driveid]->SectorsPerCluster * vfs[d->driveid]->BytesPerSector );
umask = tbytes - 1;
cluster = ( d->fpos / tbytes );
/* Rewind current cluster */
d->CurrentCluster = d->FirstCluster;
/* Bring this cluster into view */
for ( i = 0; i < cluster; i++ )
d->CurrentCluster = SWAP16(vfs[d->driveid]->FAT[d->CurrentCluster]);
/* Read the cluster */
if ( d->CachedCluster != d->CurrentCluster )
ReadCluster(d);
/* Get real read length */
reallength = ( d->fpos + length ) < d->fsize ? length : d->fsize - d->fpos;
if ( reallength <= 0 )
return 0;
/* Move data */
while( reallength )
{
if ( !(d->fpos & umask) && ( reallength >= tbytes ) )
{
/* Move a full cluster */
memcpy(p + bytesdone, d->clusterdata, tbytes);
reallength -= tbytes;
bytesdone += tbytes;
d->fpos += tbytes;
}
else
{
p[bytesdone++] = d->clusterdata[d->fpos & umask];
d->fpos++;
reallength--;
}
if ( !( d->fpos & umask ) )
{
if ( NextCluster(d) )
{
ReadCluster(d);
}
else
return bytesdone;
}
}
return bytesdone;
}
/****************************************************************************
* VFAT_fseek
****************************************************************************/
int VFAT_fseek( FSDIRENTRY *d, int where, int whence )
{
switch( whence )
{
case SEEK_SET:
if ( ( where >= 0 ) && ( where <= d->fsize ) )
{
d->fpos = where;
return FS_FILE_OK;
}
break;
case SEEK_CUR:
if ( ( ( d->fpos + where ) >= 0 ) && ( ( d->fpos + where ) <= d->fsize ) )
{
d->fpos += where;
return FS_FILE_OK;
}
break;
case SEEK_END:
if ( ( where <= 0 ) && ( abs(where) <= d->fsize ) )
{
d->fpos = d->fsize + where;
return FS_FILE_OK;
}
break;
}
return FS_NO_FILE;
}
/****************************************************************************
* VFAT_ftell
*
* Return the current position of a file
****************************************************************************/
int VFAT_ftell( FSDIRENTRY *d )
{
return d->fpos;
}

364
source/drivers/gamecube/wiisd/vfat.h Normal file
View File

@ -0,0 +1,364 @@
/****************************************************************************
* FAT16 - VFAT Support
*
* NOTE: Only supports FAT16 with Long File Names
* I have no interest in adding FAT32
*
* Reference Documentation:
*
* FAT: General Overview of On-Disk Format
* Version 1.02 May 05, 1999
* Microsoft Corporation
*
* FAT: General Overview of On-Disk Format
* Version 1.03 December 06, 2000
* Microsoft Corporation
*
* This is targetted at MMC/SD cards.
*
* Copyright softdev 2007. All rights reserved.
*
* $Date: 2007-08-05 14:27:48 +0100 (Sun, 05 Aug 2007) $
* $Rev: 8 $
****************************************************************************/
#ifndef __FATVFAT__
#define __FATVFAT__
#include "integer.h"
/* x86 type definitions */
/**\typedef VDWORD
* Unsigned 32 bit integer
*/
typedef unsigned int VDWORD;
/**\typedef WORD
* Unsigned 16 bit short
*/
//typedef unsigned short WORD;
/**\typedef BYTE
* Unsigned 8 bit char
*/
//typedef unsigned char BYTE;
/* Big Endian Support */
#ifdef WORDS_BIGENDIAN
#define SWAP16(a) (((a&0xff)<<8) | ((a&0xff00)>>8))
#define SWAP32(a) (((a&0xff000000)>>24) | ((a&0xff0000) >> 8) | ((a&0xff00)<<8) |((a&0xff)<<24))
#else
#define SWAP16(a) (a)
#define SWAP32(a) (a)
#endif
/* General */
/**\def SECTOR_SIZE
* Set to sector size of device\n
* Default is 512, which is suitable for most SD cards\n
* All sector sizes must be a power of 2
*/
#define SECTOR_SIZE 512 /* Default sector is 512 bytes */
/**\def SECTOR_SHIFT_BITS
* Number of shift bits for faster multiplication and division
*/
#define SECTOR_SHIFT_BITS 9 /* Sector shift bits */
#define LFN_LAST_ENTRY 0x40 /* Long File Name last entry mask */
#define LFN_ENTRY_MASK 0x3F /* Long File Name entry number mask */
#define ROOTCLUSTER 0xdeadc0de /* Unique root directory cluster id */
/**\def PSEP
* Path separator. Default unix style /
*/
#define PSEP '/' /* Path separator. Default unix / */
/**\def PSEPS
* Path separator string. Default unix style /
*/
#define PSEPS "/" /* Path separator string. Default unix / */
#define DIR_ROOT "." /* Root directory entry */
#define DIR_PARENT ".." /* Parent directory entry */
/* FSTYPES */
#define FS_TYPE_NONE 0
#define FS_TYPE_FAT16 1
/* Errors */
#define FS_FILE_OK 0
#define FS_SUCCESS FS_FILE_OK
#define FS_ERR_NOMEM -128
#define FS_NO_FILE -64
#define FS_ERR_IO -32
#define FS_ERR_PARAM -16
/* File modes */
#define FS_READ 1
/* Gamecube Specific */
#define FS_SLOTA 0
#define FS_SLOTB 1
/* FAT12/16 */
typedef struct
{
BYTE jmpBoot[3]; /**< Always 0xEBxx90 or 0xE9xxxx */
BYTE OEMName[8]; /**< OEM Name 'MSWIN4.1' or similar */
WORD bytesPerSec; /**< Bytes per sector */
BYTE secPerClust; /**< Sectors per cluster */
WORD reservedSec; /**< Reserved Sector Count */
BYTE numFATs; /**< Number of FAT copies */
WORD rootEntCount; /**< FAT12/16 number of root entries. */
WORD totSec16; /**< Sector count if < 0x10000 */
BYTE media; /**< Media ID byte (HD == 0xF8) */
WORD FATsz16; /**< Sectors occupied by one copy of FAT */
WORD secPerTrack; /**< Sectors per track */
WORD numHeads; /**< Number of heads */
VDWORD hiddenSec; /**< Hidden sector count */
VDWORD totSec32; /**< Total sectors when >= 0x10000 */
BYTE drvNum; /**< BIOS Drive Number (0x80) */
BYTE reserved1; /**< Unused - always zero */
BYTE bootSig; /**< Boot signature */
VDWORD volID; /**< Volume serial number */
BYTE volName[11]; /**< Volume Name */
BYTE FilSysType[8]; /**< File system type */
BYTE filler[SECTOR_SIZE-64]; /**< Byte padding */
BYTE sigkey1; /**< 0x55 */
BYTE sigkey2; /**< 0xAA */
}
#ifndef DOXYGEN_FIX_ATTR
__attribute__((__packed__))
#endif
BPB16;
/* Partition entry */
typedef struct
{
BYTE bootindicator; /**< Boot indicator 00 == No 0x80 == Boot */
BYTE startCHS[3]; /**< Start Cylinder / Head / Sector */
BYTE partitiontype; /**< Partition Type. ID 06 FAT 16 */
BYTE endCHS[3]; /**< End Cylinder / Head / Sector */
VDWORD partitionstart; /**< LBA Start Sector */
VDWORD partitionsize; /**< Partition size in sectors */
}
#ifndef DOXYGEN_FIX_ATTR
__attribute__((__packed__))
#endif
PARTENTRY;
/* VFAT - Main structure */
typedef struct
{
VDWORD BaseOffset; /**< Offset in sectors to BPB */
VDWORD SectorsPerCluster; /**< Sectors per cluster (Native) */
VDWORD BytesPerSector; /**< Bytes per sector (Native) */
VDWORD ReservedSectors; /**< Reserved sectors (Native) */
VDWORD RootDirSectors; /**< Root directory sectors (Native) */
VDWORD SectorsPerFAT; /**< Sectors per FAT (Native) */
VDWORD NumberOfFATs; /**< Number of FAT copies (Native) */
VDWORD FirstDataSector; /**< First data sector offset (Native) */
VDWORD TotalSectors; /**< Total sectors (Native) */
VDWORD CountOfClusters; /**< Count of clusters (Native) */
VDWORD DataSectors; /**< Number of Data sectors (Native) */
VDWORD RootDirOffset; /**< Offset of root directory (Native) */
VDWORD FirstFATOffset; /**< Offset to first copy of FAT (Native) */
VDWORD RootDirEntries; /**< Number of root directory entries (Native) */
WORD *FAT; /**< Holds first FAT copy */
BYTE *rootDir; /**< Holds entire root directory */
}
#ifndef DOXYGEN_FIX_ATTR
__attribute__((__packed__))
#endif
VFATFS;
/*
* Directory Functions
*/
#define MAX_LONG_NAME 256
/* Directory entry attributes */
#define ATTR_READ_ONLY 0x01
#define ATTR_HIDDEN 0x02
#define ATTR_SYSTEM 0x04
#define ATTR_VOLUME_ID 0x08
#define ATTR_DIRECTORY 0x10
#define ATTR_ARCHIVE 0x20
#define ATTR_LONG_NAME (ATTR_READ_ONLY | \
ATTR_HIDDEN | \
ATTR_SYSTEM | \
ATTR_VOLUME_ID )
#define ATTR_LONG_NAME_MASK ( ATTR_READ_ONLY | \
ATTR_HIDDEN | \
ATTR_SYSTEM | \
ATTR_VOLUME_ID | \
ATTR_DIRECTORY | \
ATTR_ARCHIVE )
/**\def CLUSTER_END_CHAIN
* Any value equal or greater than 0xFFF8 should be
* considered an end of chain marker.
*/
#define CLUSTER_END_CHAIN 0xFFF8
/**\def CLUSTER_BAD
* Documentation states that any BAD or unusable sector should be marked\n
* as 0xFFF7.
*/
#define CLUSTER_BAD 0xFFF7
/* Short file name */
typedef struct
{
BYTE dirname[11]; /**< Record name */
BYTE attribute; /**< Attributes */
BYTE NTReserved; /**< Reserved for Windows NT - set 0 */
BYTE dirTenthSecs; /**< Tenth of a second, 0-199 */
WORD dirCreateTime; /**< Time of creation */
WORD dirCreateDate; /**< Date of creation */
WORD dirLastAccDate;/**< Date of last access */
WORD fstClustHigh; /**< High word of first cluster - ZERO on FAT16 (LE)*/
WORD dirWriteTime; /**< Time of last write */
WORD dirWriteDate; /**< Date of last write */
WORD fstClustLow; /**< Low word of first cluster (LE)*/
VDWORD filesize; /**< Filesize in bytes (LE)*/
}
#ifndef DOXYGEN_FIX_ATTR
__attribute__((__packed__))
#endif
SFNDIRREC;
/* Long file name */
typedef struct
{
BYTE ordinal; /**< Entry number (0x4x) == Last entry */
BYTE dirname1[10]; /**< First part of filename in unicode */
BYTE attribute; /**< Attributes - MUST be ATTR_LONG_NAME (0x0F) */
BYTE type; /**< Reserved */
BYTE checksum; /**< SFN Checksum */
BYTE dirname2[12]; /**< Second part of filename in unicode */
WORD fstClustLo; /**< MUST BE ZERO! */
BYTE dirname3[4]; /**< Third part of filename in unicode */
}
#ifndef DOXYGEN_FIX_ATTR
__attribute__((__packed__))
#endif
LFNDIRREC;
/* User dir entry */
typedef struct
{
BYTE longname[MAX_LONG_NAME]; /**< Long file name, application friendly */
BYTE shortname[13]; /**< Short file name, application friendly */
VDWORD fpos; /**< Current file position */
VDWORD fsize; /**< File size in bytes (Native) */
VDWORD driveid; /**< Device number */
VDWORD FirstCluster; /**< First cluster in chain (Native) */
VDWORD CurrentCluster; /**< Current cluster in chain (Native) */
VDWORD CachedCluster; /**< Cached cluster (Native) */
VDWORD CurrentDirEntry; /**< Current directory entry in current cluster (Native) */
VDWORD crosscluster; /**< Record crosses cluster boundary */
BYTE *clusterdata; /**< Cluster data */
/* Now a copy of the current directory entry */
SFNDIRREC dirent; /**< Copy of physical SFNDIRREC */
}
#ifndef DOXYGEN_FIX_ATTR
__attribute__((__packed__))
#endif
FSDIRENTRY;
/* VFAT API */
/** \defgroup VFATDir VFATFS Directory Level Functions
* \brief VFAT FS Directory Functions
*/
/* Directory */
/** \ingroup VFATDir
* \brief Open a directory
* \param drive Device number to use
* \param d Pointer to user provided FSDIRENTRY
* \param search Path to open
* \return FS_SUCCESS if succesful
*/
int VFAT_opendir( int drive, FSDIRENTRY *d, char *search );
/** \ingroup VFATDir
* \brief Read directory entries
* \param d Pointer to user provided FSDIRENTRY, previously populated from VFAT_opendir
* \return FS_SUCCESS if successful
*/
int VFAT_readdir( FSDIRENTRY *d );
/** \ingroup VFATDir
* \brief Close a previously opened directory
* \param d Pointer to user provided FSDIRENTRY, previously populated from VFAT_opendir
* \return None.
*/
void VFAT_closedir( FSDIRENTRY *d );
/** \defgroup VFATFile VFATFS File Level Functions
* \brief VFAT FS File functions
*/
/** \ingroup VFATFile
* \brief Open a file
* \param drive Device number to use
* \param d Pointer to user provided FSDIRENTRY
* \param fname Filename, including full path, to open
* \param mode Currently only FS_READ is supported
* \return FS_SUCCESS if successful.
*/
int VFAT_fopen( int drive, FSDIRENTRY *d, char *fname, int mode );
/** \ingroup VFATFile
* \brief Close a previously opened file
* \param d Pointer to user provided FSDIRENTRY, previously populated by VFAT_fopen
* \return None.
*/
void VFAT_fclose( FSDIRENTRY *d );
/** \ingroup VFATFile
* \brief Read from an open file
* \param d Pointer to user provided FSDIRENTRY, populated by a successful call to VFAT_fopen
* \param buffer Buffer to receive data
* \param length Number of bytes to read to the buffer
* \return Number of bytes read if positive. If <0 an error has occurred.
*/
int VFAT_fread( FSDIRENTRY *d, void *buffer, int length );
/** \ingroup VFATFile
* \brief Return the current file position
* \param d Pointer to user provided FSDIRENTRY
* \return Current file position
*/
int VFAT_ftell( FSDIRENTRY *d );
/** \ingroup VFATFile
* \brief Move current file pointer to the requested position
* \param d Pointer to user provided FSDIRENTRY
* \param where New byte position
* \param whence Define movement type. SEEK_SET, SEEK_END and SEEK_CUR are supported
* \return FS_SUCCESS if successful
*/
int VFAT_fseek( FSDIRENTRY *d, int where, int whence );
/** \defgroup VFATMount VFATFS Device Mount Functions
* \brief Device mount / unmount functions
*/
/** \ingroup VFATMount
* \brief Mount a device
* \param driveid Device number to mount
* \param v Pointer to user provided VFATFS
* \return FS_TYPE_FAT16 on success.
*/
int VFAT_mount( int driveid, VFATFS *v );
/** \ingroup VFATMount
* \brief Unmount a device
* \param driveid Device drive number
* \param v Pointer to user provided VFATFS
* \return None
*/
void VFAT_unmount( int driveid, VFATFS *v );
#endif