2 files changed, 68 insertions, 0 deletions
diff --git a/kernel/src/filesystem/rootfs/rootfs_filesystem.cpp b/kernel/src/filesystem/rootfs/rootfs_filesystem.cpp
new file mode 100644
index 0000000..22502aa
--- /dev/null
+++ b/kernel/src/filesystem/rootfs/rootfs_filesystem.cpp
@@ -0,0 +1,29 @@
+#include "kernel/filesystem/rootfs/rootfs_filesystem.hpp"
+
+#include "kernel/devices/device.hpp"
+#include "kernel/filesystem/inode.hpp"
+#include "kernel/filesystem/rootfs/rootfs_inode.hpp"
+
+#include <kstd/memory>
+
+#include <string_view>
+
+namespace filesystem::rootfs
+{
+  auto rootfs_filesystem::mount(kstd::shared_ptr<devices::device> const &) -> int
+  {
+    auto rfs_inode = kstd::make_shared<rootfs_inode>();
+    rfs_inode->add_child("dev");
+    m_root_inode = rfs_inode;
+
+    return 0;
+  }
+
+  auto rootfs_filesystem::lookup(kstd::shared_ptr<inode> const & parent, std::string_view name)
+      -> kstd::shared_ptr<inode>
+  {
+    if (auto * rfs_inode = static_cast<rootfs_inode *>(parent.get()))
+      return rfs_inode->lookup_child(name);
+    return nullptr;
+  }
+}  // namespace filesystem::rootfs
diff --git a/kernel/src/filesystem/rootfs/rootfs_inode.cpp b/kernel/src/filesystem/rootfs/rootfs_inode.cpp
new file mode 100644
index 0000000..9bbfbce
--- /dev/null
+++ b/kernel/src/filesystem/rootfs/rootfs_inode.cpp
@@ -0,0 +1,39 @@
+#include "kernel/filesystem/rootfs/rootfs_inode.hpp"
+
+#include "kernel/filesystem/inode.hpp"
+
+#include <kstd/memory>
+#include <kstd/string>
+
+#include <algorithm>
+#include <cstddef>
+#include <string_view>
+#include <utility>
+
+namespace filesystem::rootfs
+{
+  rootfs_inode::rootfs_inode()
+      : inode(inode_kind::directory)
+  {}
+
+  auto rootfs_inode::read(void * /*buffer*/, size_t /*offset*/, size_t /*size*/) const -> size_t
+  {
+    return 0;
+  }
+
+  auto rootfs_inode::write(void const * /*buffer*/, size_t /*offset*/, size_t /*size*/) -> size_t
+  {
+    return 0;
+  }
+
+  auto rootfs_inode::add_child(std::string_view name) -> void
+  {
+    m_children.push_back(std::make_pair(kstd::string{name}, kstd::make_shared<rootfs_inode>()));
+  }
+
+  auto rootfs_inode::lookup_child(std::string_view name) -> kstd::shared_ptr<inode>
+  {
+    auto it = std::ranges::find_if(m_children, [&](auto const & pair) { return pair.first == name; });
+    return (it != m_children.end()) ? it->second : nullptr;
+  }
+}  // namespace filesystem::rootfs