1 files changed, 61 insertions, 3 deletions

diff --git a/src/core/hle/service/fs/fs_user.cpp b/src/core/hle/service/fs/fs_user.cpp
index 8d11e64b..5e9b85cc 100644
--- a/src/core/hle/service/fs/fs_user.cpp
+++ b/src/core/hle/service/fs/fs_user.cpp
@@ -226,6 +226,35 @@ static void DeleteDirectory(Service::Interface* self) {
 }
 
 /*
+ * FS_User::CreateFile service function
+ *  Inputs:
+ *      0 : Command header 0x08080202
+ *      2 : Archive handle lower word
+ *      3 : Archive handle upper word
+ *      4 : File path string type
+ *      5 : File path string size
+ *      7 : File size (filled with zeroes)
+ *      10: File path string data
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void CreateFile(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    ArchiveHandle archive_handle = MakeArchiveHandle(cmd_buff[2], cmd_buff[3]);
+    auto filename_type    = static_cast<FileSys::LowPathType>(cmd_buff[4]);
+    u32 filename_size     = cmd_buff[5];
+    u32 file_size         = cmd_buff[7];
+    u32 filename_ptr      = cmd_buff[10];
+
+    FileSys::Path file_path(filename_type, filename_size, filename_ptr);
+
+    LOG_DEBUG(Service_FS, "type=%d size=%d data=%s", filename_type, filename_size, file_path.DebugStr().c_str());
+
+    cmd_buff[1] = CreateFileInArchive(archive_handle, file_path, file_size).raw;
+}
+
+/*
  * FS_User::CreateDirectory service function
  *  Inputs:
  *      2 : Archive handle lower word
@@ -397,16 +426,44 @@ static void IsSdmcDetected(Service::Interface* self) {
 }
 
 /**
- * FS_User::FormatSaveData service function
+ * FS_User::FormatSaveData service function, 
+ * formats the SaveData specified by the input path.
  *  Inputs:
+ *      0  : 0x084C0242
+ *      1  : Archive ID
+ *      2  : Archive low path type
+ *      3  : Archive low path size
+ *      10 : (LowPathSize << 14) | 2
+ *      11 : Archive low path
  *  Outputs:
  *      1 : Result of function, 0 on success, otherwise error code
  */
 static void FormatSaveData(Service::Interface* self) {
+    // TODO(Subv): Find out what the other inputs and outputs of this function are
     u32* cmd_buff = Kernel::GetCommandBuffer();
     LOG_DEBUG(Service_FS, "(STUBBED)");
 
-    // TODO(Subv): Find out what the inputs and outputs of this function are
+    auto archive_id = static_cast<FS::ArchiveIdCode>(cmd_buff[1]);
+    auto archivename_type = static_cast<FileSys::LowPathType>(cmd_buff[2]);
+    u32 archivename_size = cmd_buff[3];
+    u32 archivename_ptr = cmd_buff[11];
+    FileSys::Path archive_path(archivename_type, archivename_size, archivename_ptr);
+
+    LOG_DEBUG(Service_FS, "archive_path=%s", archive_path.DebugStr().c_str());
+
+    if (archive_id != FS::ArchiveIdCode::SaveData) {
+        // TODO(Subv): What should happen if somebody attempts to format a different archive?
+        LOG_ERROR(Service_FS, "tried to format an archive different than SaveData, %u", cmd_buff[1]);
+        cmd_buff[1] = UnimplementedFunction(ErrorModule::FS).raw;
+        return;
+    }
+
+    if (archive_path.GetType() != FileSys::LowPathType::Empty) {
+        // TODO(Subv): Implement formatting the SaveData of other games
+        LOG_ERROR(Service_FS, "archive LowPath type other than empty is currently unsupported");
+        cmd_buff[1] = UnimplementedFunction(ErrorModule::FS).raw;
+        return;
+    }
 
     cmd_buff[1] = FormatSaveData().raw;
 }
@@ -414,6 +471,7 @@ static void FormatSaveData(Service::Interface* self) {
 /**
  * FS_User::FormatThisUserSaveData service function
  *  Inputs:
+ *      0: 0x080F0180
  *  Outputs:
  *      1 : Result of function, 0 on success, otherwise error code
  */
@@ -436,7 +494,7 @@ const FSUserInterface::FunctionInfo FunctionTable[] = {
     {0x08050244, RenameFile,            "RenameFile"},
     {0x08060142, DeleteDirectory,       "DeleteDirectory"},
     {0x08070142, nullptr,               "DeleteDirectoryRecursively"},
-    {0x08080202, nullptr,               "CreateFile"},
+    {0x08080202, CreateFile,            "CreateFile"},
     {0x08090182, CreateDirectory,       "CreateDirectory"},
     {0x080A0244, RenameDirectory,       "RenameDirectory"},
     {0x080B0102, OpenDirectory,         "OpenDirectory"},