From f1885d0d09d5d94ad326f2257c9502b9545f0e79 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Tue, 17 Mar 2026 12:39:17 +0100
Subject: use const & wherever applicable

---
 kernel/filesystem/include/filesystem/custody.hpp               | 6 +++---
 kernel/filesystem/include/filesystem/device_file.hpp           | 2 +-
 kernel/filesystem/include/filesystem/ext2/ext2_filesystem.hpp  | 2 +-
 kernel/filesystem/include/filesystem/filesystem.hpp            | 2 +-
 kernel/filesystem/include/filesystem/inode.hpp                 | 4 ++--
 kernel/filesystem/include/filesystem/inode_file.hpp            | 2 +-
 kernel/filesystem/include/filesystem/mount.hpp                 | 4 ++--
 kernel/filesystem/include/filesystem/open_file_description.hpp | 3 ++-
 kernel/filesystem/include/filesystem/vfs.hpp                   | 2 +-
 9 files changed, 14 insertions(+), 13 deletions(-)

(limited to 'kernel/filesystem/include')

diff --git a/kernel/filesystem/include/filesystem/custody.hpp b/kernel/filesystem/include/filesystem/custody.hpp
index b6eae22..0124eb6 100644
--- a/kernel/filesystem/include/filesystem/custody.hpp
+++ b/kernel/filesystem/include/filesystem/custody.hpp
@@ -9,10 +9,10 @@ namespace filesystem
 {
   struct custody
   {
-    custody(kstd::shared_ptr<custody> parent, kstd::shared_ptr<inode> node);
+    custody(kstd::shared_ptr<custody> const & parent, kstd::shared_ptr<inode> const & node);
 
-    [[nodiscard]] auto get_inode() const -> kstd::shared_ptr<inode>;
-    [[nodiscard]] auto get_parent() const -> kstd::shared_ptr<custody>;
+    [[nodiscard]] auto get_inode() const -> kstd::shared_ptr<inode> const &;
+    [[nodiscard]] auto get_parent() const -> kstd::shared_ptr<custody> const &;
 
   private:
     kstd::shared_ptr<custody> m_parent;
diff --git a/kernel/filesystem/include/filesystem/device_file.hpp b/kernel/filesystem/include/filesystem/device_file.hpp
index 4dce37f..dad4ea5 100644
--- a/kernel/filesystem/include/filesystem/device_file.hpp
+++ b/kernel/filesystem/include/filesystem/device_file.hpp
@@ -13,7 +13,7 @@ namespace filesystem
 {
   struct device_file : file
   {
-    explicit device_file(kstd::shared_ptr<devices::device> device);
+    explicit device_file(kstd::shared_ptr<devices::device> const & device);
 
     auto open() -> void override;
 
diff --git a/kernel/filesystem/include/filesystem/ext2/ext2_filesystem.hpp b/kernel/filesystem/include/filesystem/ext2/ext2_filesystem.hpp
index dd52e72..37448a1 100644
--- a/kernel/filesystem/include/filesystem/ext2/ext2_filesystem.hpp
+++ b/kernel/filesystem/include/filesystem/ext2/ext2_filesystem.hpp
@@ -13,7 +13,7 @@ namespace filesystem::ext2
 {
   struct ext2_filesystem : filesystem
   {
-    auto mount(kstd::shared_ptr<devices::device> device) -> int override;
+    auto mount(kstd::shared_ptr<devices::device> const & device) -> int override;
     auto lookup(inode const & parent, std::string_view name) -> inode * override;
 
   private:
diff --git a/kernel/filesystem/include/filesystem/filesystem.hpp b/kernel/filesystem/include/filesystem/filesystem.hpp
index eabefc0..934f883 100644
--- a/kernel/filesystem/include/filesystem/filesystem.hpp
+++ b/kernel/filesystem/include/filesystem/filesystem.hpp
@@ -14,7 +14,7 @@ namespace filesystem
   {
     virtual ~filesystem() = default;
 
-    virtual auto mount(kstd::shared_ptr<devices::device> device) -> int = 0;
+    virtual auto mount(kstd::shared_ptr<devices::device> const & device) -> int = 0;
     virtual auto lookup(inode const & parent, std::string_view name) -> inode * = 0;
 
     [[nodiscard]] auto root_inode() const -> inode const &;
diff --git a/kernel/filesystem/include/filesystem/inode.hpp b/kernel/filesystem/include/filesystem/inode.hpp
index 2b5ee6c..abfe2cf 100644
--- a/kernel/filesystem/include/filesystem/inode.hpp
+++ b/kernel/filesystem/include/filesystem/inode.hpp
@@ -14,7 +14,7 @@ namespace filesystem
   {
     inode() = default;
     explicit inode(inode_kind kind);
-    explicit inode(kstd::shared_ptr<devices::device> device);
+    explicit inode(kstd::shared_ptr<devices::device> const & device);
 
     [[nodiscard]] auto metadata() const -> inode_metadata;
 
@@ -24,7 +24,7 @@ namespace filesystem
     [[nodiscard]] auto is_block_device() const -> bool;
     [[nodiscard]] auto major_device() const -> size_t;
     [[nodiscard]] auto minor_device() const -> size_t;
-    [[nodiscard]] auto backing_device() const -> kstd::shared_ptr<devices::device>;
+    [[nodiscard]] auto backing_device() const -> kstd::shared_ptr<devices::device> const &;
 
     auto read(void * buffer, size_t offset, size_t size) const -> size_t;
     auto write(void const * buffer, size_t offset, size_t size) -> size_t;
diff --git a/kernel/filesystem/include/filesystem/inode_file.hpp b/kernel/filesystem/include/filesystem/inode_file.hpp
index 512f51d..5f8a95e 100644
--- a/kernel/filesystem/include/filesystem/inode_file.hpp
+++ b/kernel/filesystem/include/filesystem/inode_file.hpp
@@ -12,7 +12,7 @@ namespace filesystem
 {
   struct inode_file : file
   {
-    explicit inode_file(kstd::shared_ptr<inode> inode);
+    explicit inode_file(kstd::shared_ptr<inode> const & inode);
 
     auto open() -> void override;
 
diff --git a/kernel/filesystem/include/filesystem/mount.hpp b/kernel/filesystem/include/filesystem/mount.hpp
index f28de74..46a68e2 100644
--- a/kernel/filesystem/include/filesystem/mount.hpp
+++ b/kernel/filesystem/include/filesystem/mount.hpp
@@ -11,10 +11,10 @@ namespace filesystem
 {
   struct mount
   {
-    mount(std::string_view const & path, kstd::shared_ptr<filesystem> fs);
+    mount(std::string_view const & path, kstd::shared_ptr<filesystem> const & fs);
 
     [[nodiscard]] auto path() const -> std::string_view;
-    [[nodiscard]] auto get_filesystem() const -> kstd::shared_ptr<filesystem>;
+    [[nodiscard]] auto get_filesystem() const -> kstd::shared_ptr<filesystem> const &;
 
   private:
     std::string_view m_path;
diff --git a/kernel/filesystem/include/filesystem/open_file_description.hpp b/kernel/filesystem/include/filesystem/open_file_description.hpp
index 035b0ee..5ff094d 100644
--- a/kernel/filesystem/include/filesystem/open_file_description.hpp
+++ b/kernel/filesystem/include/filesystem/open_file_description.hpp
@@ -2,6 +2,7 @@
 #define TEACH_OS_KERNEL_FILESYSTEM_OPEN_FILE_DESCRIPTION_HPP
 
 #include "file.hpp"
+
 #include <kstd/memory>
 
 #include <cstddef>
@@ -10,7 +11,7 @@ namespace filesystem
 {
   struct open_file_description
   {
-    open_file_description(kstd::shared_ptr<file> file);
+    open_file_description(kstd::shared_ptr<file> const & file);
 
     ~open_file_description() = default;
 
diff --git a/kernel/filesystem/include/filesystem/vfs.hpp b/kernel/filesystem/include/filesystem/vfs.hpp
index 9c89044..e16a961 100644
--- a/kernel/filesystem/include/filesystem/vfs.hpp
+++ b/kernel/filesystem/include/filesystem/vfs.hpp
@@ -33,7 +33,7 @@ namespace filesystem
     };
 
     vfs() = default;
-    auto make_device_node(kstd::shared_ptr<devices::device> device) -> void;
+    auto make_device_node(kstd::shared_ptr<devices::device> const & device) -> void;
     [[nodiscard]] auto resolve_path(std::string_view path) -> std::optional<custody>;
 
     kstd::shared_ptr<ext2::ext2_filesystem> m_root_fs;
-- 
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