From 27e5ef0214a3c6a48741d9c13a727c5f77a6ad05 Mon Sep 17 00:00:00 2001
From: momo5502 <mauriceheumann@gmail.com>
Date: Sun, 9 Feb 2025 12:54:01 +0100
Subject: [PATCH] Support Nsi device

---
 src/windows-emulator/io_device.cpp |  1 +
 src/windows-emulator/syscalls.cpp  | 17 +++++++++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/windows-emulator/io_device.cpp b/src/windows-emulator/io_device.cpp
index 2cc9e87a..e96329a0 100644
--- a/src/windows-emulator/io_device.cpp
+++ b/src/windows-emulator/io_device.cpp
@@ -16,6 +16,7 @@ namespace
 std::unique_ptr<io_device> create_device(const std::u16string_view device)
 {
     if (device == u"CNG"                 //
+        || device == u"Nsi"              //
         || device == u"KsecDD"           //
         || device == u"PcwDrv"           //
         || device == u"DeviceApi\\CMApi" //
diff --git a/src/windows-emulator/syscalls.cpp b/src/windows-emulator/syscalls.cpp
index c27f5c98..bc2e25fe 100644
--- a/src/windows-emulator/syscalls.cpp
+++ b/src/windows-emulator/syscalls.cpp
@@ -2918,9 +2918,22 @@ namespace
             return filename.substr(device_prefix.size());
         }
 
-        if (filename.starts_with(u"\\??\\MountPointManager"))
+        constexpr std::u16string_view unc_prefix = u"\\??\\";
+        if (!filename.starts_with(unc_prefix))
         {
-            return u"MountPointManager";
+            return std::nullopt;
+        }
+
+        const auto path = filename.substr(unc_prefix.size());
+
+        const std::set<std::u16string, std::less<>> devices{
+            u"Nsi",
+            u"MountPointManager",
+        };
+
+        if (devices.contains(path))
+        {
+            return path;
         }
 
         return std::nullopt;