From 934cb5460577dd4f672ae3d9c918826e50073934 Mon Sep 17 00:00:00 2001
From: Exzap <13877693+Exzap@users.noreply.github.com>
Date: Sat, 7 Dec 2024 09:24:59 +0100
Subject: [PATCH] Properly check if MLC is writeable

---
 src/gui/CemuApp.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/gui/CemuApp.cpp b/src/gui/CemuApp.cpp
index 50ff3b89..c4b1f4e4 100644
--- a/src/gui/CemuApp.cpp
+++ b/src/gui/CemuApp.cpp
@@ -234,6 +234,12 @@ void CemuApp::InitializeExistingMLCOrFail(fs::path mlc)
 			g_config.Save();
 		}
 	}
+	else
+	{
+		// default path is not writeable. Just let the user know and quit. Unsure if it would be a good idea to ask the user to choose an alternative path instead
+		wxMessageBox(formatWxString(_("Cemu failed to write to the default mlc directory.\nThe path is:\n{}"), wxHelper::FromPath(mlc)), _("Error"), wxOK | wxCENTRE | wxICON_ERROR);
+		exit(0);
+	}
 }
 
 bool CemuApp::OnInit()
@@ -507,6 +513,13 @@ bool CemuApp::CreateDefaultMLCFiles(const fs::path& mlc)
 			file.flush();
 			file.close();
 		}
+		// create a dummy file in the mlc folder to check if it's writable
+		const auto dummyFile = fs::path(mlc).append("writetestdummy");
+		std::ofstream file(dummyFile);
+		if (!file.is_open())
+			return false;
+		file.close();
+		fs::remove(dummyFile);
 	}
 	catch (const std::exception& ex)
 	{