Merge branch 'develop-BA-FS26' into 'develop'HEADdevelop

Merge of BA-FS26 branch into develop

See merge request teachos/kernel!49

1 files changed, 60 insertions, 0 deletions

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
new file mode 100644
index 0000000..24d0e22
--- /dev/null
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -0,0 +1,60 @@
+#include <kernel/filesystem/filesystem.hpp>
+
+#include <kernel/filesystem/ext2/filesystem.hpp>
+#include <kernel/filesystem/inode.hpp>
+
+#include <kapi/system.hpp>
+
+#include <kstd/memory>
+
+#include <array>
+
+namespace kernel::filesystem
+{
+  namespace
+  {
+    constexpr auto static filesystem_factories = std::array{
+      []() { return kstd::make_shared<ext2::filesystem>(); },
+    };
+  }  // namespace
+
+  auto filesystem::probe_and_mount(kstd::shared_ptr<inode> const & backing_inode) -> kstd::shared_ptr<filesystem>
+  {
+    if (!backing_inode)
+    {
+      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: backing inode is null.");
+    }
+
+    for (auto & factory : filesystem_factories)
+    {
+      auto fs = factory();
+      if (fs->mount(backing_inode) == operation_result::success)
+      {
+        return fs;
+      }
+    }
+
+    return nullptr;
+  }
+
+  auto filesystem::mount(kstd::shared_ptr<inode> const & backing_inode) -> operation_result
+  {
+    if (!backing_inode)
+    {
+      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: backing inode is null.");
+    }
+
+    m_backing_inode = backing_inode;
+    return operation_result::success;
+  }
+
+  auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
+  {
+    return m_root_inode;
+  }
+
+  auto filesystem::backing_inode() const -> kstd::shared_ptr<inode> const &
+  {
+    return m_backing_inode;
+  }
+}  // namespace kernel::filesystem
\ No newline at end of file