From fc0cd8317a22e982cbf1ba90c18ca72299660eb8 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Mon, 16 Aug 2021 14:19:36 +0200
Subject: [PATCH] Kernel/DevPtsFS: Add tightly typed DevPtsFSInode::fs()

---
 Kernel/FileSystem/DevPtsFS.cpp | 4 +---
 Kernel/FileSystem/DevPtsFS.h   | 3 +++
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/Kernel/FileSystem/DevPtsFS.cpp b/Kernel/FileSystem/DevPtsFS.cpp
index 2290449b296..7c84db9f0b3 100644
--- a/Kernel/FileSystem/DevPtsFS.cpp
+++ b/Kernel/FileSystem/DevPtsFS.cpp
@@ -145,11 +145,9 @@ KResultOr<NonnullRefPtr<Inode>> DevPtsFSInode::lookup(StringView name)
     if (name == "." || name == "..")
         return *this;
 
-    auto& fs = static_cast<DevPtsFS&>(this->fs());
-
     auto pty_index = name.to_uint();
     if (pty_index.has_value() && s_ptys->contains(pty_index.value())) {
-        auto inode = fs.get_inode({ fsid(), pty_index_to_inode_index(pty_index.value()) });
+        auto inode = fs().get_inode({ fsid(), pty_index_to_inode_index(pty_index.value()) });
         if (!inode)
             return ENOENT;
         return inode.release_nonnull();
diff --git a/Kernel/FileSystem/DevPtsFS.h b/Kernel/FileSystem/DevPtsFS.h
index 9efbb3ba009..568b2c2ca43 100644
--- a/Kernel/FileSystem/DevPtsFS.h
+++ b/Kernel/FileSystem/DevPtsFS.h
@@ -43,6 +43,9 @@ class DevPtsFSInode final : public Inode {
 public:
     virtual ~DevPtsFSInode() override;
 
+    DevPtsFS& fs() { return static_cast<DevPtsFS&>(Inode::fs()); }
+    DevPtsFS const& fs() const { return static_cast<DevPtsFS const&>(Inode::fs()); }
+
 private:
     DevPtsFSInode(DevPtsFS&, InodeIndex, SlavePTY*);