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https://github.com/rvtr/GodMode9i.git
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a9a29204ab
* Various improvements to drive unmounting drives * Add mounting DSiWare saves They're FAT12 images, but libfat doens't like them without a little tweak since they don't have the 'FAT' identifier text * Don't try to send DSi SD card status on regular DS Fixes X and Y buttons being unresponsive
98 lines
1.9 KiB
C
98 lines
1.9 KiB
C
#include "tonccpy.h"
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#include <nds.h>
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#include <nds/disc_io.h>
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#include <stdio.h>
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#include <dirent.h>
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#define SECTOR_SIZE 512
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// #define WRITABLE
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char currentImgName[PATH_MAX];
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static FILE* imgFile;
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bool img_startup() {
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#ifdef WRITABLE
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imgFile = fopen(currentImgName, "rb+");
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#else
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imgFile = fopen(currentImgName, "rb");
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#endif
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return imgFile != NULL;
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}
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bool img_is_inserted() {
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return imgFile != NULL;
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}
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bool img_read_sectors(sec_t sector, sec_t numSectors, void *buffer) {
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if (!imgFile) return false;
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fseek(imgFile, (sector << 9), SEEK_SET);
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fread(buffer, 1, (numSectors << 9), imgFile);
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return true;
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}
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bool dsiware_read_sectors(sec_t sector, sec_t numSectors, void *buffer) {
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if(!img_read_sectors(sector, numSectors, buffer)) return false;
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// DSiWare saves are FAT12 images, however they don't have the 'FAT' text
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// in the bootsector so libfat rejects them
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if (sector == 0) tonccpy(buffer + 0x36, "FAT", 3);
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return true;
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}
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bool img_write_sectors(sec_t sector, sec_t numSectors, const void *buffer) {
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#ifdef WRITABLE
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if (!imgFile) return false;
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fseek(imgFile, (sector << 9), SEEK_SET);
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fwrite(buffer, 1, (numSectors << 9), imgFile);
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return true;
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#else
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return false;
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#endif
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}
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bool img_clear_status() {
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return true;
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}
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bool img_shutdown() {
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if (imgFile) {
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fclose(imgFile);
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imgFile = NULL;
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}
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return true;
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}
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const DISC_INTERFACE io_img = {
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('I' << 24) | ('M' << 16) | ('G' << 8) | 'F',
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#ifdef WRITABLE
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FEATURE_MEDIUM_CANREAD | FEATURE_MEDIUM_CANWRITE,
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#else
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FEATURE_MEDIUM_CANREAD,
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#endif
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img_startup,
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img_is_inserted,
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img_read_sectors,
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img_write_sectors,
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img_clear_status,
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img_shutdown
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};
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const DISC_INTERFACE io_dsiware_save = {
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('I' << 24) | ('M' << 16) | ('G' << 8) | 'F',
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#ifdef WRITABLE
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FEATURE_MEDIUM_CANREAD | FEATURE_MEDIUM_CANWRITE,
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#else
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FEATURE_MEDIUM_CANREAD,
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#endif
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img_startup,
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img_is_inserted,
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dsiware_read_sectors,
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img_write_sectors,
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img_clear_status,
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img_shutdown
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};
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