Add mount_table

3 files changed, 53 insertions, 0 deletions

diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt
index 01fee74..ee1f585 100644
--- a/kernel/CMakeLists.txt
+++ b/kernel/CMakeLists.txt
@@ -29,6 +29,7 @@ add_executable("kernel"
     "src/filesystem/file_descriptor_table.cpp"
     "src/filesystem/filesystem.cpp"
     "src/filesystem/inode.cpp"
+    "src/filesystem/mount_table.cpp"
     "src/filesystem/mount.cpp"
     "src/filesystem/open_file_description.cpp"
     "src/filesystem/vfs.cpp"
diff --git a/kernel/include/kernel/filesystem/mount_table.hpp b/kernel/include/kernel/filesystem/mount_table.hpp
new file mode 100644
index 0000000..14d6d08
--- /dev/null
+++ b/kernel/include/kernel/filesystem/mount_table.hpp
@@ -0,0 +1,23 @@
+#ifndef TEACH_OS_KERNEL_FILESYSTEM_MOUNT_TABLE_HPP
+#define TEACH_OS_KERNEL_FILESYSTEM_MOUNT_TABLE_HPP
+
+#include "kernel/filesystem/dentry.hpp"
+#include "kernel/filesystem/mount.hpp"
+
+#include <kstd/memory>
+#include <kstd/vector>
+
+namespace filesystem
+{
+  struct mount_table
+  {
+  public:
+    void add_mount(kstd::shared_ptr<mount>);
+    auto find_mount_by_dentry(kstd::shared_ptr<dentry> const & dentry) -> kstd::shared_ptr<mount>;
+
+  private:
+    kstd::vector<kstd::shared_ptr<mount>> m_mounts;
+  };
+}  // namespace filesystem
+
+#endif
diff --git a/kernel/src/filesystem/mount_table.cpp b/kernel/src/filesystem/mount_table.cpp
new file mode 100644
index 0000000..0e9a53d
--- /dev/null
+++ b/kernel/src/filesystem/mount_table.cpp
@@ -0,0 +1,29 @@
+#include "kernel/filesystem/mount_table.hpp"
+
+#include "kapi/system.hpp"
+
+#include "kernel/filesystem/dentry.hpp"
+#include "kernel/filesystem/mount.hpp"
+
+#include <kstd/memory>
+
+#include <algorithm>
+
+namespace filesystem
+{
+  void mount_table::add_mount(kstd::shared_ptr<mount> mount)
+  {
+    m_mounts.push_back(mount);
+  }
+
+  auto mount_table::find_mount_by_dentry(kstd::shared_ptr<dentry> const & dentry) -> kstd::shared_ptr<mount>
+  {
+    auto found =
+        std::ranges::find_if(m_mounts, [&](auto const & mount) { return mount->get_dentry().get() == dentry.get(); });
+    if (found != m_mounts.end())
+    {
+      return *found;
+    }
+    kapi::system::panic("[FILESYSTEM] dentry has mount flag set but no corresponding mount found.");
+  }
+}  // namespace filesystem
\ No newline at end of file