1 files changed, 81 insertions, 0 deletions
diff --git a/kernel/src/filesystem/devfs/filesystem.cpp b/kernel/src/filesystem/devfs/filesystem.cpp
new file mode 100644
index 0000000..ce887ff
--- /dev/null
+++ b/kernel/src/filesystem/devfs/filesystem.cpp
@@ -0,0 +1,81 @@
+#include <kernel/filesystem/devfs/filesystem.hpp>
+
+#include "kernel/filesystem/filesystem.hpp"
+#include <kernel/devices/storage/management.hpp>
+#include <kernel/filesystem/devfs/inode.hpp>
+#include <kernel/filesystem/device_inode.hpp>
+#include <kernel/filesystem/inode.hpp>
+#include <kernel/filesystem/type.hpp>
+
+#include <kapi/devices/device.hpp>
+
+#include <kstd/memory>
+
+#include <algorithm>
+#include <string_view>
+
+namespace kernel::filesystem::devfs
+{
+  struct type final : kernel::filesystem::type
+  {
+    [[nodiscard]] auto name() const noexcept -> std::string_view override
+    {
+      return "devfs";
+    }
+
+    [[nodiscard]] auto requires_device() const noexcept -> bool override
+    {
+      return false;
+    }
+
+    [[nodiscard]] auto make_instance() const -> kstd::shared_ptr<kernel::filesystem::filesystem> override
+    {
+      return kstd::make_shared<filesystem>();
+    }
+  };
+
+  [[gnu::used]]
+  constexpr auto registration = type_registration<type>{};
+
+  auto filesystem::mount(kstd::shared_ptr<kernel::filesystem::inode> const &) -> operation_result
+  {
+    m_root_inode = kstd::make_shared<inode>();
+    build_device_inode_table();
+
+    return operation_result::success;
+  }
+
+  auto filesystem::lookup(kstd::shared_ptr<kernel::filesystem::inode> const & parent, std::string_view name) const
+      -> kstd::shared_ptr<kernel::filesystem::inode>
+  {
+    if (!parent || !parent->is_directory())
+    {
+      return nullptr;
+    }
+
+    if (parent.get() != m_root_inode.get())
+    {
+      return nullptr;
+    }
+
+    auto it = std::ranges::find_if(m_inodes, [&](auto const & dev_node) {
+      if (auto device_inode_ptr = static_cast<device_inode *>(dev_node.get()))
+      {
+        return device_inode_ptr->device()->name() == name;
+      }
+      return false;
+    });
+    return (it != m_inodes.end()) ? *it : nullptr;
+  }
+
+  auto filesystem::build_device_inode_table() -> void
+  {
+    m_inodes.clear();
+
+    auto storage_mgmt = devices::storage::management::get();
+    std::ranges::for_each(storage_mgmt.all_controllers(), [&](auto const & controller) {
+      std::ranges::for_each(controller->all_devices(),
+                            [&](auto const & device) { m_inodes.push_back(kstd::make_shared<device_inode>(device)); });
+    });
+  }
+}  // namespace kernel::filesystem::devfs
+\ No newline at end of file