core: file_sys: fix for racing in fs mount

src/core/file_sys/fs.cpp

@@ -15,6 +15,7 @@ void MntPoints::Mount(const std::filesystem::path& host_folder, const std::strin
 }
 
 void MntPoints::Unmount(const std::filesystem::path& host_folder, const std::string& guest_folder) {
+    std::scoped_lock lock{m_mutex};
     auto it = std::remove_if(m_mnt_pairs.begin(), m_mnt_pairs.end(),
                              [&](const MntPair& pair) { return pair.mount == guest_folder; });
     m_mnt_pairs.erase(it, m_mnt_pairs.end());

src/core/file_sys/fs.h

@@ -34,6 +34,7 @@ public:
     std::filesystem::path GetHostPath(std::string_view guest_directory);
 
     const MntPair* GetMount(const std::string& guest_path) {
+        std::scoped_lock lock{m_mutex};
         const auto it = std::ranges::find_if(
             m_mnt_pairs, [&](const auto& mount) { return guest_path.starts_with(mount.mount); });
         return it == m_mnt_pairs.end() ? nullptr : &*it;