From 44dcabd214ef7f27390331855b915d8c1d89919d Mon Sep 17 00:00:00 2001
From: Michael Scire <SciresM@gmail.com>
Date: Wed, 2 Dec 2020 08:15:38 -0800
Subject: [PATCH] sm: add smDetachClient

---
 nx/include/switch/services/sm.h | 6 ++++++
 nx/source/services/sm.c         | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/nx/include/switch/services/sm.h b/nx/include/switch/services/sm.h
index 1b8f5721..b2bddbb9 100644
--- a/nx/include/switch/services/sm.h
+++ b/nx/include/switch/services/sm.h
@@ -124,6 +124,12 @@ Result smRegisterService(Handle* handle_out, SmServiceName name, bool is_light,
  */
 Result smUnregisterService(SmServiceName name);
 
+/**
+ * @brief Detaches the current SM session.
+ * @note After this function is called, the rest of the SM API cannot be used.
+ */
+Result smDetachClient(void);
+
 /**
  * @brief Gets the Service session used to communicate with SM.
  * @return Pointer to service session used to communicate with SM.
diff --git a/nx/source/services/sm.c b/nx/source/services/sm.c
index a271d746..2ed08c76 100644
--- a/nx/source/services/sm.c
+++ b/nx/source/services/sm.c
@@ -1,5 +1,6 @@
 #define NX_SERVICE_ASSUME_NON_DOMAIN
 #include "service_guard.h"
+#include "runtime/hosversion.h"
 #include "runtime/diag.h"
 
 static Service g_smSrv;
@@ -105,3 +106,8 @@ Result smRegisterService(Handle* handle_out, SmServiceName name, bool is_light,
 Result smUnregisterService(SmServiceName name) {
     return serviceDispatchIn(&g_smSrv, 3, name);
 }
+
+Result smDetachClient(void) {
+    if (hosversionBefore(11,0,0)) return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+    return serviceDispatch(&g_smSrv, 4);
+}