Kernel: Split the SysFS core files into smaller components

Kernel/FileSystem/SysFS/FileSystem.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <Kernel/FileSystem/FileSystem.h>
+#include <Kernel/FileSystem/Inode.h>
+#include <Kernel/FileSystem/SysFS/Component.h>
+#include <Kernel/Forward.h>
+#include <Kernel/Locking/MutexProtected.h>
+
+namespace Kernel {
+
+class SysFS final : public FileSystem {
+    friend class SysFSInode;
+    friend class SysFSDirectoryInode;
+
+public:
+    virtual ~SysFS() override;
+    static ErrorOr<NonnullLockRefPtr<FileSystem>> try_create();
+
+    virtual ErrorOr<void> initialize() override;
+    virtual StringView class_name() const override { return "SysFS"sv; }
+
+    virtual Inode& root_inode() override;
+
+private:
+    SysFS();
+
+    LockRefPtr<SysFSInode> m_root_inode;
+};
+
+}