From 68d8ade667915867e1712807480e8c56a06c0c39 Mon Sep 17 00:00:00 2001
From: Fritz Elfert <fritz@fritz-elfert.de>
Date: Fri, 29 Dec 2017 18:56:11 +0100
Subject: [PATCH] Speed up mount operation by putting winfsp network provider
 at the head of network providers

---
 src/dll/np.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/dll/np.c b/src/dll/np.c
index dfa38f7b..bc6d1a03 100644
--- a/src/dll/np.c
+++ b/src/dll/np.c
@@ -1016,7 +1016,7 @@ NTSTATUS FspNpRegister(VOID)
     WCHAR ProviderPath[MAX_PATH];
     WCHAR RegBuffer[1024];
     PWSTR P, Part;
-    DWORD RegResult, RegType, RegBufferSize;
+    DWORD RegResult, RegType, RegBufferSize, RegBufferOffset;
     HKEY RegKey;
     BOOLEAN FoundProvider;
 
@@ -1082,15 +1082,16 @@ NTSTATUS FspNpRegister(VOID)
         return FspNtStatusFromWin32(RegResult);
 
     RegBufferSize = sizeof RegBuffer - sizeof L"," FSP_NP_NAME;
+    RegBufferOffset = lstrlenW(L"," FSP_NP_NAME);
     RegResult = RegQueryValueExW(RegKey,
-        L"ProviderOrder", 0, &RegType, (PVOID)RegBuffer, &RegBufferSize);
+        L"ProviderOrder", 0, &RegType, (PVOID)&RegBuffer[RegBufferOffset], &RegBufferSize);
     if (ERROR_SUCCESS != RegResult)
         goto close_and_exit;
     RegBufferSize /= sizeof(WCHAR);
 
     FoundProvider = FALSE;
-    RegBuffer[RegBufferSize] = L'\0';
-    P = RegBuffer, Part = P;
+    RegBuffer[RegBufferSize + RegBufferOffset] = L'\0';
+    P = &RegBuffer[RegBufferOffset], Part = P;
     do
     {
         if (L',' == *P || '\0' == *P)
@@ -1107,8 +1108,7 @@ NTSTATUS FspNpRegister(VOID)
 
     if (!FoundProvider)
     {
-        P--;
-        memcpy(P, L"," FSP_NP_NAME, sizeof L"," FSP_NP_NAME);
+        memcpy((PWSTR)RegBuffer, L"" FSP_NP_NAME ",", sizeof L"" FSP_NP_NAME);
 
         RegBufferSize = lstrlenW(RegBuffer);
         RegBufferSize++;