mount root filesystem

2 files changed, 35 insertions, 1 deletions

diff --git a/kernel/filesystem/include/filesystem/vfs.hpp b/kernel/filesystem/include/filesystem/vfs.hpp
index 671128e..5998137 100644
--- a/kernel/filesystem/include/filesystem/vfs.hpp
+++ b/kernel/filesystem/include/filesystem/vfs.hpp
@@ -1,7 +1,12 @@
 #ifndef TEACH_OS_KERNEL_FILESYSTEM_VFS_HPP
 #define TEACH_OS_KERNEL_FILESYSTEM_VFS_HPP
 
+#include "filesystem/mount.hpp"
+
+#include <array>
+#include <optional>
 #include <string_view>
+
 namespace filesystem
 {
   struct vfs
@@ -15,6 +20,9 @@ namespace filesystem
 
   private:
     vfs() = default;
+
+    std::optional<mount> m_root_mount;
+    std::array<mount, 10> m_mounts;  // TODO BA-FS26 remove when kstd::vector is available and used
   };
 }  // namespace filesystem
 
diff --git a/kernel/filesystem/src/vfs.cpp b/kernel/filesystem/src/vfs.cpp
index 27f1db9..3f2576f 100644
--- a/kernel/filesystem/src/vfs.cpp
+++ b/kernel/filesystem/src/vfs.cpp
@@ -2,6 +2,10 @@
 
 #include "kapi/system.hpp"
 
+#include "devices/storage/storage_management.hpp"
+#include "filesystem/ext2/ext2_filesystem.hpp"
+#include "filesystem/mount.hpp"
+
 #include <optional>
 
 namespace filesystem
@@ -9,7 +13,11 @@ namespace filesystem
   namespace
   {
     constinit auto static active_vfs = std::optional<vfs>{};
-  }
+
+    // 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>{};
+  }  // namespace
 
   auto vfs::init() -> void
   {
@@ -19,6 +27,24 @@ namespace filesystem
     }
 
     active_vfs.emplace(vfs{});
+
+    auto storage_mgmt = devices::storage::storage_management::get();
+    if (auto boot_device = storage_mgmt.determine_boot_device())
+    {
+      root_fs.emplace(ext2::ext2_filesystem{});
+      if (root_fs->mount(boot_device) != 0)
+      {
+        kapi::system::panic("[FILESYSTEM] Failed to mount root filesystem.");
+      }
+
+      active_vfs->m_root_mount = mount{"/", &*root_fs};
+
+      // TODO BA-FS26 mount all the other devices to "/dev/ramxy"
+    }
+    else
+    {
+      // TODO BA-FS26 ?? what when no boot_device == no modules loaded??
+    }
   }
 
   auto vfs::get() -> vfs &