Services: Stubbed more services.

Implemented FSUser::CreateExtSaveData

src/core/hle/service/fs/archive.cpp

@@ -432,6 +432,28 @@ ResultCode FormatSaveData() {
     return archive_itr->second->backend->Format(FileSys::Path());
 }
 
+ResultCode CreateExtSaveData(u32 high, u32 low) {
+    // Construct the binary path to the archive first
+    std::vector<u8> binary_path;
+    binary_path.reserve(12);
+    // The first word is all zero to specify a NAND archive
+    for (unsigned i = 0; i < 4; ++i)
+        binary_path.push_back(0);
+    // Next is the low word
+    for (unsigned i = 0; i < 4; ++i)
+        binary_path.push_back((low >> (8 * i)) & 0xFF);
+    // Next is the high word
+    for (unsigned i = 0; i < 4; ++i)
+        binary_path.push_back((high >> i) & 0xFF);
+    FileSys::Path path(binary_path);
+    std::string nand_directory = FileUtil::GetUserPath(D_NAND_IDX);
+    std::string base_path = FileSys::GetExtDataContainerPath(nand_directory, true);
+    std::string extsavedata_path = FileSys::GetExtSaveDataPath(base_path, path);
+    if (!FileUtil::CreateFullPath(extsavedata_path))
+        return ResultCode(-1); // TODO(Subv): Find the right error code
+    return RESULT_SUCCESS;
+}
+
 /// Initialize archives
 void ArchiveInit() {
     next_handle = 1;

src/core/hle/service/fs/archive.h

@@ -131,6 +131,14 @@ ResultVal<Handle> OpenDirectoryFromArchive(ArchiveHandle archive_handle, const F
  */
 ResultCode FormatSaveData();
 
+/**
+ * Creates a blank SharedExtSaveData archive for the specified extdata ID
+ * @param high The high word of the extdata id to create
+ * @param low The low word of the extdata id to create
+ * @return ResultCode 0 on success or the corresponding code on error
+ */
+ResultCode CreateExtSaveData(u32 high, u32 low);
+
 /// Initialize archives
 void ArchiveInit();
 

src/core/hle/service/fs/fs_user.cpp

@@ -484,6 +484,15 @@ static void FormatThisUserSaveData(Service::Interface* self) {
     cmd_buff[1] = FormatSaveData().raw;
 }
 
+static void CreateExtSaveData(Service::Interface* self) {
+    // TODO(Subv): Figure out the other parameters.
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    u32 save_high = cmd_buff[1];
+    u32 save_low = cmd_buff[2];
+    // TODO(Subv): For now it is assumed that only SharedExtSaveData can be created like this
+    cmd_buff[1] = CreateExtSaveData(save_high, save_low).raw;
+}
+
 const FSUserInterface::FunctionInfo FunctionTable[] = {
     {0x000100C6, nullptr,               "Dummy1"},
     {0x040100C4, nullptr,               "Control"},
@@ -567,6 +576,8 @@ const FSUserInterface::FunctionInfo FunctionTable[] = {
     {0x084E0342, nullptr,               "UpdateSha256Context"},
     {0x084F0102, nullptr,               "ReadSpecialFile"},
     {0x08500040, nullptr,               "GetSpecialFileSize"},
+    {0x08510242, CreateExtSaveData,     "CreateExtSaveData"},
+    {0x08520100, nullptr,               "DeleteExtSaveData"},
     {0x08580000, nullptr,               "GetMovableSedHashedKeyYRandomData"},
     {0x08610042, nullptr,               "InitializeWithSdkVersion"},
     {0x08620040, nullptr,               "SetPriority"},