114 lines
2.2 KiB
C
114 lines
2.2 KiB
C
/*
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* fs.c
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*/
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#include "fs.h"
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#include "memory.h"
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#include "fatfs/ff.h"
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static FATFS sdFs,
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nandFs;
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u32 mountFs(void)
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{
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if(f_mount(&sdFs, "0:", 1) != FR_OK) return 0;
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f_mount(&nandFs, "1:", 0);
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return 1;
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}
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u32 fileRead(void *dest, const char *path, u32 size)
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{
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FRESULT result;
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FIL file;
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result = f_open(&file, path, FA_READ);
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if(result == FR_OK)
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{
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unsigned int read;
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if(!size) size = f_size(&file);
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result = f_read(&file, dest, size, &read);
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}
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f_close(&file);
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return result;
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}
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u32 fileWrite(const void *buffer, const char *path, u32 size)
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{
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FRESULT result;
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FIL file;
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result = f_open(&file, path, FA_WRITE | FA_OPEN_ALWAYS);
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if(result == FR_OK)
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{
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unsigned int read;
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result = f_write(&file, buffer, size, &read);
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}
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f_close(&file);
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return result;
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}
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u32 defPayloadExists(void)
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{
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DIR dir;
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FILINFO info;
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FRESULT result = f_findfirst(&dir, &info, "/luma/payloads", "def_*.bin");
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f_closedir(&dir);
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return (result == FR_OK && info.fname[0]);
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}
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void firmRead(void *dest, const char *firmFolder)
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{
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char path[48] = "1:/title/00040138/00000000/content";
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memcpy(&path[18], firmFolder, 8);
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DIR dir;
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FILINFO info;
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f_opendir(&dir, path);
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u32 id = 0xFFFFFFFF;
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//Parse the target directory
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while(f_readdir(&dir, &info) == FR_OK && info.fname[0])
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{
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//Not a cxi
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if(info.altname[9] != 'A') continue;
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//Convert the .app name to an integer
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u32 tempId = 0;
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for(char *tmp = info.altname; *tmp != '.'; tmp++)
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{
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tempId <<= 4;
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tempId += *tmp > '9' ? *tmp - 'A' + 10 : *tmp - '0';
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}
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//Found an older cxi
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if(tempId < id) id = tempId;
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}
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f_closedir(&dir);
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//Complete the string with the .app name
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memcpy(&path[34], "/00000000.app", 14);
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//Last digit of the .app
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u32 i = 42;
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//Convert back the .app name from integer to array
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while(id)
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{
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static const char hexDigits[] = "0123456789ABCDEF";
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path[i--] = hexDigits[id & 0xF];
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id >>= 4;
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}
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fileRead(dest, path, 0);
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} |