Mount can only be unmounted if no references are present, increment references on open file and decrement on close file

1 files changed, 16 insertions, 1 deletions

diff --git a/kernel/src/filesystem/vfs.cpp b/kernel/src/filesystem/vfs.cpp
index 77ae015..3b3d6ff 100644
--- a/kernel/src/filesystem/vfs.cpp
+++ b/kernel/src/filesystem/vfs.cpp
@@ -89,7 +89,22 @@ namespace kernel::filesystem
 
   auto vfs::open(std::string_view path) -> kstd::shared_ptr<dentry>
   {
-    return resolve_path(path);
+    auto [dentry, mount] = resolve_path_internal(path);
+    mount->increment_ref_count();
+    return dentry;
+  }
+
+  auto vfs::close(kstd::shared_ptr<dentry> const & dentry) -> operation_result
+  {
+    if (auto mount = find_mount(dentry->get_absolute_path().view()))
+    {
+      if (mount->decrement_ref_count())
+      {
+        return operation_result::success;
+      }
+      return operation_result::close_failed;
+    }
+    return operation_result::invalid_path;
   }
 
   auto vfs::do_mount(std::string_view source, std::string_view target) -> operation_result