diff --git a/src/core/file_sys/fs.cpp b/src/core/file_sys/fs.cpp
index c7b0c57e..69bcbe47 100644
--- a/src/core/file_sys/fs.cpp
+++ b/src/core/file_sys/fs.cpp
@@ -1 +1,36 @@
-namespace Core::FileSys {}
\ No newline at end of file
+#include "fs.h"
+
+#include <algorithm>
+
+namespace Core::FileSys {
+void MntPoints::mount(const std::string& host_folder, const std::string& guest_folder) {
+    std::unique_lock lock{m_mutex};
+
+    MntPair pair;
+    pair.host_path = host_folder;
+    pair.guest_path = guest_folder;
+
+    m_mnt_pairs.push_back(pair);
+}
+void MntPoints::unmount(const std::string& path) {}//TODO!
+void MntPoints::unmountAll() {
+    std::unique_lock lock{m_mutex};
+    m_mnt_pairs.clear();
+}
+std::string MntPoints::getHostDirectory(const std::string& guest_directory) {
+    std::unique_lock lock{m_mutex};
+    for (auto& pair : m_mnt_pairs) {
+        if (pair.guest_path.starts_with(guest_directory)) {
+            return pair.host_path + guest_directory;
+        }
+    }
+    // hack for relative path , get app0 and assuming it goes from there
+    for (auto& pair : m_mnt_pairs) {
+        if (pair.guest_path.starts_with("/app0")) {
+            std::replace(pair.host_path.begin(), pair.host_path.end(), '\\', '/');
+            return pair.host_path + guest_directory;
+        }
+    }
+    return "";
+}
+}  // namespace Core::FileSys
\ No newline at end of file
diff --git a/src/core/file_sys/fs.h b/src/core/file_sys/fs.h
index 3ffad9c1..912d9825 100644
--- a/src/core/file_sys/fs.h
+++ b/src/core/file_sys/fs.h
@@ -1,4 +1,27 @@
 #pragma once
+#include <mutex>
+#include <string>
+#include <vector>
 
 namespace Core::FileSys {
-}
\ No newline at end of file
+
+class MntPoints {
+  public:
+    struct MntPair {
+        std::string host_path;
+        std::string guest_path;  // e.g /app0/
+    };
+
+    MntPoints() {}
+    virtual ~MntPoints() {}
+    void mount(const std::string& host_folder, const std::string& guest_folder);
+    void unmount(const std::string& path);
+    void unmountAll();
+    std::string getHostDirectory(const std::string& guest_directory);
+
+  private:
+    std::vector<MntPair> m_mnt_pairs;
+    std::mutex m_mutex;
+};
+
+}  // namespace Core::FileSys
\ No newline at end of file