properly make the DSi NAND instance-unique

src/DSi.cpp

@@ -511,10 +511,7 @@ void SetupDirectBoot()
         ARM9Write32(0x02FFE000+i, tmp);
     }
 
-    FILE* nand = Platform::OpenLocalFile(Platform::GetConfigString(Platform::DSi_NANDPath), "r+b");
+    if (DSi_NAND::Init(&DSi::ARM7iBIOS[0x8308]))
-    if (nand)
-    {
-        if (DSi_NAND::Init(nand, &DSi::ARM7iBIOS[0x8308]))
     {
         u8 userdata[0x1B0];
         DSi_NAND::ReadUserData(userdata);
@@ -534,9 +531,6 @@ void SetupDirectBoot()
         DSi_NAND::DeInit();
     }
 
-        fclose(nand);
-    }
-
     u8 nwifiver = SPI_Firmware::GetNWifiVersion();
     ARM9Write8(0x020005E0, nwifiver);
 
@@ -707,19 +701,14 @@ bool LoadNAND()
 {
     printf("Loading DSi NAND\n");
 
-    FILE* nand = Platform::OpenLocalFile(Platform::GetConfigString(Platform::DSi_NANDPath), "r+b");
+    if (!DSi_NAND::Init(&DSi::ARM7iBIOS[0x8308]))
-    if (!nand)
-    {
-        printf("Failed to open DSi NAND\n");
-        return false;
-    }
-
-    if (!DSi_NAND::Init(nand, &DSi::ARM7iBIOS[0x8308]))
     {
         printf("Failed to load DSi NAND\n");
         return false;
     }
 
+    FILE* nand = DSi_NAND::GetFile();
+
     // Make sure NWRAM is accessible.
     // The Bits are set to the startup values in Reset() and we might
     // still have them on default (0) or some bits cleared by the previous

src/DSi_NAND.cpp

@@ -49,8 +49,48 @@ UINT FF_ReadNAND(BYTE* buf, LBA_t sector, UINT num);
 UINT FF_WriteNAND(BYTE* buf, LBA_t sector, UINT num);
 
 
-bool Init(FILE* nandfile, u8* es_keyY)
+bool Init(u8* es_keyY)
 {
+    CurFile = nullptr;
+
+    std::string nandpath = Platform::GetConfigString(Platform::DSi_NANDPath);
+    std::string instnand = nandpath + Platform::InstanceFileSuffix();
+
+    FILE* nandfile = Platform::OpenLocalFile(instnand, "r+b");
+    if ((!nandfile) && (Platform::InstanceID() > 0))
+    {
+        FILE* orig = Platform::OpenLocalFile(nandpath, "rb");
+        if (!orig)
+        {
+            printf("Failed to open DSi NAND\n");
+            return false;
+        }
+
+        fseek(orig, 0, SEEK_END);
+        long len = ftell(orig);
+        fseek(orig, 0, SEEK_SET);
+
+        nandfile = Platform::OpenLocalFile(instnand, "w+b");
+        if (nandfile)
+        {
+            u8* tmpbuf = new u8[0x10000];
+            for (long i = 0; i < len; i+=0x10000)
+            {
+                long blklen = 0x10000;
+                if ((i+blklen) > len) blklen = len-i;
+
+                fread(tmpbuf, blklen, 1, orig);
+                fwrite(tmpbuf, blklen, 1, nandfile);
+            }
+            delete[] tmpbuf;
+        }
+
+        fclose(orig);
+        fclose(nandfile);
+
+        nandfile = Platform::OpenLocalFile(instnand, "r+b");
+    }
+
     if (!nandfile)
         return false;
 
@@ -138,10 +178,17 @@ void DeInit()
     f_unmount("0:");
     ff_disk_close();
 
+    if (CurFile) fclose(CurFile);
     CurFile = nullptr;
 }
 
 
+FILE* GetFile()
+{
+    return CurFile;
+}
+
+
 void GetIDs(u8* emmc_cid, u64& consoleid)
 {
     memcpy(emmc_cid, eMMC_CID, 16);

src/DSi_NAND.h

@@ -34,9 +34,11 @@ enum
     TitleData_BannerSav,
 };
 
-bool Init(FILE* nand, u8* es_keyY);
+bool Init(u8* es_keyY);
 void DeInit();
 
+FILE* GetFile();
+
 void GetIDs(u8* emmc_cid, u64& consoleid);
 
 void ReadHardwareInfo(u8* dataS, u8* dataN);

src/DSi_SD.cpp

@@ -136,7 +136,10 @@ void DSi_SDHost::Reset()
         else
             sd = nullptr;
 
-        mmc = new DSi_MMCStorage(this, true, Platform::GetConfigString(Platform::DSi_NANDPath));
+        std::string nandpath = Platform::GetConfigString(Platform::DSi_NANDPath);
+        std::string instnand = nandpath + Platform::InstanceFileSuffix();
+
+        mmc = new DSi_MMCStorage(this, true, instnand);
         mmc->SetCID(DSi::eMMC_CID);
 
         Ports[0] = sd;

src/frontend/qt_sdl/TitleManagerDialog.cpp

@@ -31,7 +31,7 @@
 #include "ui_TitleImportDialog.h"
 
 
-FILE* TitleManagerDialog::curNAND = nullptr;
+bool TitleManagerDialog::NANDInited = false;
 TitleManagerDialog* TitleManagerDialog::currentDlg = nullptr;
 
 extern std::string EmuDirectory;
@@ -136,6 +136,8 @@ void TitleManagerDialog::createTitleItem(u32 category, u32 titleid)
 
 bool TitleManagerDialog::openNAND()
 {
+    NANDInited = false;
+
     FILE* bios7i = Platform::OpenLocalFile(Config::DSiBIOS7Path, "rb");
     if (!bios7i)
         return false;
@@ -145,28 +147,21 @@ bool TitleManagerDialog::openNAND()
     fread(es_keyY, 16, 1, bios7i);
     fclose(bios7i);
 
-    curNAND = Platform::OpenLocalFile(Config::DSiNANDPath, "r+b");
+    if (!DSi_NAND::Init(es_keyY))
-    if (!curNAND)
-        return false;
-
-    if (!DSi_NAND::Init(curNAND, es_keyY))
     {
-        fclose(curNAND);
-        curNAND = nullptr;
         return false;
     }
 
+    NANDInited = true;
     return true;
 }
 
 void TitleManagerDialog::closeNAND()
 {
-    if (curNAND)
+    if (NANDInited)
     {
         DSi_NAND::DeInit();
-
+        NANDInited = false;
-        fclose(curNAND);
-        curNAND = nullptr;
     }
 }
 

src/frontend/qt_sdl/TitleManagerDialog.h

@@ -45,7 +45,7 @@ public:
     explicit TitleManagerDialog(QWidget* parent);
     ~TitleManagerDialog();
 
-    static FILE* curNAND;
+    static bool NANDInited;
     static bool openNAND();
     static void closeNAND();