sf: add NativeHandle type

TODO: figure out how to integrate this into templating...

libraries/libstratosphere/include/stratosphere/sf.hpp

@@ -31,6 +31,7 @@
 #include <stratosphere/sf/sf_fs_inline_context.hpp>
 
 #include <stratosphere/sf/sf_out.hpp>
+#include <stratosphere/sf/sf_native_handle.hpp>
 #include <stratosphere/sf/sf_buffers.hpp>
 #include <stratosphere/sf/impl/sf_impl_command_serialization.hpp>
 #include <stratosphere/sf/impl/sf_impl_autogen_interface_macros.hpp>

libraries/libstratosphere/include/stratosphere/sf/sf_native_handle.hpp

@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/os/os_native_handle.hpp>
+#include <stratosphere/sf/sf_common.hpp>
+#include <stratosphere/sf/sf_out.hpp>
+
+namespace ams::sf {
+
+    class NativeHandle {
+        NON_COPYABLE(NativeHandle);
+        private:
+            os::NativeHandle m_handle;
+            bool m_managed;
+        public:
+            constexpr NativeHandle() : m_handle(os::InvalidNativeHandle), m_managed(false) { /* ... */ }
+
+            constexpr NativeHandle(os::NativeHandle handle, bool managed) : m_handle(handle), m_managed(managed) { /* ... */ }
+
+            constexpr NativeHandle(NativeHandle &&rhs) : m_handle(rhs.m_handle), m_managed(rhs.m_managed) {
+                rhs.m_managed = false;
+                rhs.m_handle  = os::InvalidNativeHandle;
+            }
+
+            constexpr NativeHandle &operator=(NativeHandle &&rhs) {
+                NativeHandle(std::move(rhs)).swap(*this);
+                return *this;
+            }
+
+            constexpr ~NativeHandle() {
+                if (m_managed) {
+                    os::CloseNativeHandle(m_handle);
+                }
+            }
+
+            constexpr void Detach() {
+                m_managed = false;
+                m_handle  = os::InvalidNativeHandle;
+            }
+
+            constexpr void Swap(NativeHandle &rhs) {
+                std::swap(m_handle, rhs.m_handle);
+                std::swap(m_managed, rhs.m_managed);
+            }
+
+            constexpr ALWAYS_INLINE void swap(NativeHandle &rhs) {
+                return Swap(rhs);
+            }
+
+            constexpr NativeHandle GetShared() const {
+                return NativeHandle(m_handle, false);
+            }
+
+            constexpr os::NativeHandle GetOsHandle() const {
+                return m_handle;
+            }
+
+            constexpr bool IsManaged() const {
+                return m_managed;
+            }
+
+            constexpr void Reset() {
+                NativeHandle().swap(*this);
+            }
+    };
+
+    ALWAYS_INLINE void swap(NativeHandle &lhs, NativeHandle &rhs) {
+        lhs.swap(rhs);
+    }
+
+    template<>
+    class Out<NativeHandle> {
+        private:
+            NativeHandle *m_ptr;
+        public:
+            Out(NativeHandle *p) : m_ptr(p) { /* ... */ }
+
+            void SetValue(NativeHandle v) const {
+                *m_ptr = std::move(v);
+            }
+
+            NativeHandle &operator*() const {
+                return *m_ptr;
+            }
+    };
+
+}