From bcb4f8a76dea2443c1597716e27b7c2d268bfc44 Mon Sep 17 00:00:00 2001
From: "marcel.braun" <marcel.braun@ost.ch>
Date: Mon, 23 Mar 2026 09:49:32 +0100
Subject: Refactor filesystem

---
 kernel/include/kernel/filesystem/ext2/ext2_filesystem.hpp |  1 -
 kernel/include/kernel/filesystem/filesystem.hpp           |  5 ++++-
 kernel/src/filesystem/ext2/ext2_filesystem.cpp            |  8 ++------
 kernel/src/filesystem/filesystem.cpp                      | 11 +++++++++++
 4 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/kernel/include/kernel/filesystem/ext2/ext2_filesystem.hpp b/kernel/include/kernel/filesystem/ext2/ext2_filesystem.hpp
index d6f69c8..92e05c8 100644
--- a/kernel/include/kernel/filesystem/ext2/ext2_filesystem.hpp
+++ b/kernel/include/kernel/filesystem/ext2/ext2_filesystem.hpp
@@ -17,7 +17,6 @@ namespace filesystem::ext2
     auto lookup(inode const & parent, std::string_view name) -> inode * override;
 
   private:
-    kstd::shared_ptr<devices::device> m_device{};
   };
 }  // namespace filesystem::ext2
 
diff --git a/kernel/include/kernel/filesystem/filesystem.hpp b/kernel/include/kernel/filesystem/filesystem.hpp
index 035f49d..733c51a 100644
--- a/kernel/include/kernel/filesystem/filesystem.hpp
+++ b/kernel/include/kernel/filesystem/filesystem.hpp
@@ -5,6 +5,7 @@
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
+#include <kstd/vector>
 
 #include <string_view>
 
@@ -14,13 +15,15 @@ namespace filesystem
   {
     virtual ~filesystem() = default;
 
-    virtual auto mount(kstd::shared_ptr<devices::device> const & device) -> int = 0;
+    virtual auto mount(kstd::shared_ptr<devices::device> const & device) -> int;
     virtual auto lookup(inode const & parent, std::string_view name) -> inode * = 0;
 
     [[nodiscard]] auto root_inode() const -> kstd::shared_ptr<inode> const &;
 
   protected:
     kstd::shared_ptr<inode> m_root_inode{};
+    kstd::shared_ptr<devices::device> m_device{};
+    kstd::vector<kstd::shared_ptr<inode>> m_inodes{};
   };
 
 }  // namespace filesystem
diff --git a/kernel/src/filesystem/ext2/ext2_filesystem.cpp b/kernel/src/filesystem/ext2/ext2_filesystem.cpp
index 87845d5..ea692ee 100644
--- a/kernel/src/filesystem/ext2/ext2_filesystem.cpp
+++ b/kernel/src/filesystem/ext2/ext2_filesystem.cpp
@@ -1,6 +1,7 @@
 #include "kernel/filesystem/ext2/ext2_filesystem.hpp"
 
 #include "kernel/devices/device.hpp"
+#include "kernel/filesystem/filesystem.hpp"
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
@@ -11,12 +12,7 @@ namespace filesystem::ext2
 {
   auto ext2_filesystem::mount(kstd::shared_ptr<devices::device> const & device) -> int
   {
-    if (!device)
-    {
-      return -1;  // TODO BA-FS26 panic or errorcode?
-    }
-
-    m_device = device;
+    filesystem::mount(device);  // TODO BA-FS26 error handling?
     // TODO BA-FS26 load proper root inode from ext2 metadata
     // m_root_inode = inode{inode_kind::directory};
 
diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 50b5587..0e33d95 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,11 +1,22 @@
 #include "kernel/filesystem/filesystem.hpp"
 
+#include "kernel/devices/device.hpp"
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
 
 namespace filesystem
 {
+  auto filesystem::mount(kstd::shared_ptr<devices::device> const & device) -> int
+  {
+    if (!device)
+    {
+      return -1;  // TODO BA-FS26 panic or errorcode?
+    }
+    m_device = device;
+    return 0;
+  }
+
   auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
   {
     return m_root_inode;
-- 
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