From d999c29c82b77e3e7b4ba23dc0ede76415424856 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Wed, 26 Aug 2026 17:49:43 +0200
Subject: kernel/fs: rootfs: implement read_directory

---
 kernel/kernel/filesystem/rootfs/inode.cpp | 9 +++++++++
 kernel/kernel/filesystem/rootfs/inode.hpp | 7 +++++++
 2 files changed, 16 insertions(+)

(limited to 'kernel')

diff --git a/kernel/kernel/filesystem/rootfs/inode.cpp b/kernel/kernel/filesystem/rootfs/inode.cpp
index 0ee0b517..f2751afc 100644
--- a/kernel/kernel/filesystem/rootfs/inode.cpp
+++ b/kernel/kernel/filesystem/rootfs/inode.cpp
@@ -1,5 +1,7 @@
 #include <kernel/filesystem/inode.hpp>
 
+#include <kernel/filesystem/directory_listing_cursor.hpp>
+#include <kernel/filesystem/directory_listing_entry.hpp>
 #include <kernel/filesystem/rootfs/inode.hpp>
 
 #include <kstd/result.hpp>
@@ -7,6 +9,7 @@
 
 #include <cstddef>
 #include <span>
+#include <utility>
 
 namespace kernel::filesystem::rootfs
 {
@@ -24,4 +27,10 @@ namespace kernel::filesystem::rootfs
   {
     return true;
   }
+
+  auto inode::read_directory(directory_listing_cursor position, std::span<directory_listing_entry>) const
+      -> kstd::result<std::pair<std::size_t, directory_listing_cursor>>
+  {
+    return std::pair{0, position};
+  }
 }  // namespace kernel::filesystem::rootfs
diff --git a/kernel/kernel/filesystem/rootfs/inode.hpp b/kernel/kernel/filesystem/rootfs/inode.hpp
index 2a1c3858..fdef0df4 100644
--- a/kernel/kernel/filesystem/rootfs/inode.hpp
+++ b/kernel/kernel/filesystem/rootfs/inode.hpp
@@ -1,6 +1,8 @@
 #ifndef TEACHOS_KERNEL_FILESYSTEM_ROOTFS_INODE_HPP
 #define TEACHOS_KERNEL_FILESYSTEM_ROOTFS_INODE_HPP
 
+#include <kernel/filesystem/directory_listing_cursor.hpp>
+#include <kernel/filesystem/directory_listing_entry.hpp>
 #include <kernel/filesystem/inode.hpp>
 
 #include <kstd/memory.hpp>
@@ -11,6 +13,7 @@
 
 #include <cstddef>
 #include <span>
+#include <utility>
 
 namespace kernel::filesystem::rootfs
 {
@@ -23,6 +26,10 @@ namespace kernel::filesystem::rootfs
     auto write(std::span<std::byte const> buffer, kstd::bytes offset) -> kstd::result<kstd::bytes> override;
 
     [[nodiscard]] auto is_directory() const -> bool override;
+
+    [[nodiscard]] auto read_directory(directory_listing_cursor position,
+                                      std::span<directory_listing_entry> entries) const
+        -> kstd::result<std::pair<std::size_t, directory_listing_cursor>> override;
   };
 }  // namespace kernel::filesystem::rootfs
 
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