From e355d5e6aa84b1ea4de70820159b5f1af13bc6f8 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Sun, 15 Mar 2026 18:32:16 +0100
Subject: implement first draft of make_device_node

---
 kernel/filesystem/src/vfs.cpp | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

(limited to 'kernel/filesystem/src/vfs.cpp')

diff --git a/kernel/filesystem/src/vfs.cpp b/kernel/filesystem/src/vfs.cpp
index 3f2576f..573994a 100644
--- a/kernel/filesystem/src/vfs.cpp
+++ b/kernel/filesystem/src/vfs.cpp
@@ -2,11 +2,17 @@
 
 #include "kapi/system.hpp"
 
+#include "devices/device.hpp"
 #include "devices/storage/storage_management.hpp"
 #include "filesystem/ext2/ext2_filesystem.hpp"
 #include "filesystem/mount.hpp"
 
+#include <kstd/cstring>
+
+#include <algorithm>
+#include <array>
 #include <optional>
+#include <string_view>
 
 namespace filesystem
 {
@@ -17,6 +23,12 @@ namespace filesystem
     // TODO BA-FS26 @Felix better solution? while dynamic memory not available?
     // TODO BA-FS26 remove when dynamic memory available;
     constinit auto static root_fs = std::optional<ext2::ext2_filesystem>{};
+    // TODO BA-FS26 use kstd::vector when available
+    constinit auto static filesystems = std::array<std::optional<ext2::ext2_filesystem>, 1>{};
+
+    // TODO BA-FS26 @Felix
+    // TODO BA-FS26 depends on the length of ram_disk_device name
+    constinit std::array<char, 10> device_mount_path = {'/', 'd', 'e', 'v', '/', 'x', 'x', 'x', 'x', '\0'};
   }  // namespace
 
   auto vfs::init() -> void
@@ -39,7 +51,9 @@ namespace filesystem
 
       active_vfs->m_root_mount = mount{"/", &*root_fs};
 
-      // TODO BA-FS26 mount all the other devices to "/dev/ramxy"
+      std::ranges::for_each(storage_mgmt.all_controllers(), [&](auto controller) {
+        std::ranges::for_each(controller->all_devices(), [&](auto device) { active_vfs->make_device_node(device); });
+      });
     }
     else
     {
@@ -57,4 +71,19 @@ namespace filesystem
     return *active_vfs;
   }
 
+  auto vfs::make_device_node(devices::device * device) -> void
+  {
+    auto device_name = device->name();
+    kstd::libc::memcpy(&device_mount_path[5], device_name.data(), device_name.size());
+
+    // TODO BA-FS26 use kstd::vector and push_back when available
+    filesystems[0].emplace(ext2::ext2_filesystem{});
+    if (filesystems[0]->mount(device) != 0)
+    {
+      kapi::system::panic("[FILESYSTEM] Failed to mount device filesystem.");
+    }
+
+    m_mounts[0] = mount{std::string_view{device_mount_path.data()}, &*filesystems[0]};
+  }
+
 }  // namespace filesystem
\ No newline at end of file
-- 
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