From b91595f9086dae3db6c37067fc31b31a6120c3ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
Date: Tue, 6 Jun 2017 21:08:51 +0200
Subject: [PATCH] ntoskrnl.exe: Implement NtBuildNumber.

---
 dlls/ntoskrnl.exe/ntoskrnl.c        | 11 +++++++++--
 dlls/ntoskrnl.exe/ntoskrnl.exe.spec |  2 +-
 dlls/ntoskrnl.exe/tests/driver.c    | 29 +++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 466962a..0fea91b 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -57,6 +57,7 @@ WINE_DECLARE_DEBUG_CHANNEL(plugplay);
 
 BOOLEAN KdDebuggerEnabled = FALSE;
 ULONG InitSafeBootMode = 0;
+USHORT NtBuildNumber = 0;
 
 extern LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs );
 
@@ -2939,6 +2940,13 @@ NTSTATUS WINAPI IoAcquireRemoveLockEx(PIO_REMOVE_LOCK lock, PVOID tag,
     return STATUS_NOT_IMPLEMENTED;
 }
 
+static void ntoskrnl_init(void)
+{
+    LARGE_INTEGER count;
+
+    KeQueryTickCount( &count );  /* initialize the global KeTickCount */
+    NtBuildNumber = NtCurrentTeb()->Peb->OSBuildNumber;
+}
 
 /*****************************************************
  *           DllMain
@@ -2946,7 +2954,6 @@ NTSTATUS WINAPI IoAcquireRemoveLockEx(PIO_REMOVE_LOCK lock, PVOID tag,
 BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
 {
     static void *handler;
-    LARGE_INTEGER count;
 
     switch(reason)
     {
@@ -2955,7 +2962,7 @@ BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
 #if defined(__i386__) || defined(__x86_64__)
         handler = RtlAddVectoredExceptionHandler( TRUE, vectored_handler );
 #endif
-        KeQueryTickCount( &count );  /* initialize the global KeTickCount */
+        ntoskrnl_init();
         break;
     case DLL_PROCESS_DETACH:
         if (reserved) break;
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index 63c1b8e..72a9f7f 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -743,7 +743,7 @@
 @ stdcall NtAllocateLocallyUniqueId(ptr)
 @ stdcall NtAllocateUuids(ptr ptr ptr ptr)
 @ stdcall NtAllocateVirtualMemory(long ptr long ptr long long)
-@ stub NtBuildNumber
+@ extern NtBuildNumber
 @ stdcall NtClose(long)
 @ stdcall NtConnectPort(ptr ptr ptr ptr ptr ptr ptr ptr)
 @ stdcall NtCreateEvent(ptr long ptr long long)
diff --git a/dlls/ntoskrnl.exe/tests/driver.c b/dlls/ntoskrnl.exe/tests/driver.c
index d424396..57aaa28 100644
--- a/dlls/ntoskrnl.exe/tests/driver.c
+++ b/dlls/ntoskrnl.exe/tests/driver.c
@@ -143,6 +143,22 @@ static void winetest_end_todo(void)
 #define todo_wine               todo_if(running_under_wine)
 #define todo_wine_if(is_todo)   todo_if((is_todo) && running_under_wine)
 
+static void *get_proc_address(const char *name)
+{
+    UNICODE_STRING name_u;
+    ANSI_STRING name_a;
+    NTSTATUS status;
+    void *ret;
+
+    RtlInitAnsiString(&name_a, name);
+    status = RtlAnsiStringToUnicodeString(&name_u, &name_a, TRUE);
+    if (status) return NULL;
+
+    ret = MmGetSystemRoutineAddress(&name_u);
+    RtlFreeUnicodeString(&name_u);
+    return ret;
+}
+
 static void test_currentprocess(void)
 {
     PEPROCESS current;
@@ -210,6 +226,18 @@ static void test_load_driver(void)
     ok(!ret, "got %#x\n", ret);
 }
 
+static void test_version(void)
+{
+    USHORT *pNtBuildNumber;
+    ULONG build;
+
+    pNtBuildNumber = get_proc_address("NtBuildNumber");
+    ok(!!pNtBuildNumber, "Could not get pointer to NtBuildNumber\n");
+
+    PsGetVersion(NULL, NULL, &build, NULL);
+    ok(*pNtBuildNumber == build, "Expected build number %u, got %u\n", build, *pNtBuildNumber);
+}
+
 static NTSTATUS main_test(IRP *irp, IO_STACK_LOCATION *stack, ULONG_PTR *info)
 {
     ULONG length = stack->Parameters.DeviceIoControl.OutputBufferLength;
@@ -237,6 +265,7 @@ static NTSTATUS main_test(IRP *irp, IO_STACK_LOCATION *stack, ULONG_PTR *info)
     test_mdl_map();
     test_init_funcs();
     test_load_driver();
+    test_version();
 
     /* print process report */
     if (test_input->winetest_debug)
-- 
1.9.1