diff --git a/Kernel/FileSystem/SysFS.cpp b/Kernel/FileSystem/SysFS.cpp
index bedf3d6353..cc26614663 100644
--- a/Kernel/FileSystem/SysFS.cpp
+++ b/Kernel/FileSystem/SysFS.cpp
@@ -182,9 +182,14 @@ KResult SysFSInode::chown(UserID, GroupID)
     return EPERM;
 }
 
-KResult SysFSInode::truncate(u64)
+KResult SysFSInode::set_mtime(time_t time)
 {
-    return EPERM;
+    return m_associated_component->set_mtime(time);
+}
+
+KResult SysFSInode::truncate(u64 size)
+{
+    return m_associated_component->truncate(size);
 }
 
 KResultOr<NonnullRefPtr<SysFSDirectoryInode>> SysFSDirectoryInode::try_create(SysFS const& sysfs, SysFSComponent const& component)
diff --git a/Kernel/FileSystem/SysFS.h b/Kernel/FileSystem/SysFS.h
index 886c31eeb9..4b8bf05c94 100644
--- a/Kernel/FileSystem/SysFS.h
+++ b/Kernel/FileSystem/SysFS.h
@@ -146,6 +146,7 @@ protected:
     virtual KResult chmod(mode_t) override;
     virtual KResult chown(UserID, GroupID) override;
     virtual KResult truncate(u64) override;
+    virtual KResult set_mtime(time_t);
 
     virtual KResult attach(OpenFileDescription& description) override final;
     virtual void did_seek(OpenFileDescription&, off_t) override final;
diff --git a/Kernel/FileSystem/SysFSComponent.h b/Kernel/FileSystem/SysFSComponent.h
index c6711a3c47..30f1c66ebb 100644
--- a/Kernel/FileSystem/SysFSComponent.h
+++ b/Kernel/FileSystem/SysFSComponent.h
@@ -30,6 +30,8 @@ public:
     virtual KResult traverse_as_directory(unsigned, Function<bool(FileSystem::DirectoryEntryView const&)>) const { VERIFY_NOT_REACHED(); }
     virtual RefPtr<SysFSComponent> lookup(StringView) { VERIFY_NOT_REACHED(); };
     virtual mode_t permissions() const;
+    virtual KResult truncate(u64) { return EPERM; }
+    virtual KResult set_mtime(time_t) { return ENOTIMPL; }
     virtual KResultOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) { return EROFS; }
     virtual KResult refresh_data(OpenFileDescription&) const { return KSuccess; }
 
diff --git a/Kernel/Firmware/PowerStateSwitch.cpp b/Kernel/Firmware/PowerStateSwitch.cpp
index 16f9e07101..e0f9b53dbe 100644
--- a/Kernel/Firmware/PowerStateSwitch.cpp
+++ b/Kernel/Firmware/PowerStateSwitch.cpp
@@ -30,6 +30,15 @@ UNMAP_AFTER_INIT PowerStateSwitchNode::PowerStateSwitchNode(FirmwareSysFSDirecto
 {
 }
 
+KResult PowerStateSwitchNode::truncate(u64 size)
+{
+    // Note: This node doesn't store any useful data anyway, so we can safely
+    // truncate this to zero (essentially ignoring the request without failing).
+    if (size != 0)
+        return EPERM;
+    return KSuccess;
+}
+
 KResultOr<size_t> PowerStateSwitchNode::write_bytes(off_t offset, size_t count, UserOrKernelBuffer const& data, OpenFileDescription*)
 {
     if (Checked<off_t>::addition_would_overflow(offset, count))
diff --git a/Kernel/Firmware/PowerStateSwitch.h b/Kernel/Firmware/PowerStateSwitch.h
index e96540f202..c35bd85ff4 100644
--- a/Kernel/Firmware/PowerStateSwitch.h
+++ b/Kernel/Firmware/PowerStateSwitch.h
@@ -25,6 +25,8 @@ public:
     static NonnullRefPtr<PowerStateSwitchNode> must_create(FirmwareSysFSDirectory&);
     virtual mode_t permissions() const override;
     virtual KResultOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) override;
+    virtual KResult truncate(u64) override;
+    virtual KResult set_mtime(time_t) { return KSuccess; }
 
 private:
     PowerStateSwitchNode(FirmwareSysFSDirectory&);