Use CreateFileW instead of CreateFile2 (#1301)

Fixes https://github.com/Microsoft/DirectXShaderCompiler/issues/1265

lib/DxcSupport/dxcapi.use.cpp

@@ -106,8 +106,8 @@ void WriteBlobToFile(_In_opt_ IDxcBlob *pBlob, _In_ LPCWSTR pFileName) {
     return;
   }
 
-  CHandle file(CreateFile2(pFileName, GENERIC_WRITE, FILE_SHARE_READ,
-                           CREATE_ALWAYS, nullptr));
+  CHandle file(CreateFileW(pFileName, GENERIC_WRITE, FILE_SHARE_READ, nullptr,
+                           CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr));
   if (file == INVALID_HANDLE_VALUE) {
     IFT_Data(HRESULT_FROM_WIN32(GetLastError()), pFileName);
   }

tools/clang/tools/dxc/dxc.cpp

@@ -237,8 +237,8 @@ static void WritePartToFile(IDxcBlob *pBlob, hlsl::DxilFourCC CC,
   const char *pData = hlsl::GetDxilPartData(*it);
   DWORD dataLen = (*it)->PartSize;
   StringRefUtf16 WideName(FName);
-  CHandle file(CreateFile2(WideName, GENERIC_WRITE, FILE_SHARE_READ,
-                           CREATE_ALWAYS, nullptr));
+  CHandle file(CreateFileW(WideName, GENERIC_WRITE, FILE_SHARE_READ, nullptr,
+                           CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr));
   if (file == INVALID_HANDLE_VALUE) {
     IFT_Data(HRESULT_FROM_WIN32(GetLastError()), WideName);
   }
@@ -880,8 +880,8 @@ static void WriteString(HANDLE hFile, _In_z_ LPCSTR value, LPCWSTR pFileName) {
 
 void DxcContext::WriteHeader(IDxcBlobEncoding *pDisassembly, IDxcBlob *pCode,
                              llvm::Twine &pVariableName, LPCWSTR pFileName) {
-  CHandle file(CreateFile2(pFileName, GENERIC_WRITE, FILE_SHARE_READ,
-                           CREATE_ALWAYS, nullptr));
+  CHandle file(CreateFileW(pFileName, GENERIC_WRITE, FILE_SHARE_READ, nullptr,
+                           CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr));
   if (file == INVALID_HANDLE_VALUE) {
     IFT_Data(HRESULT_FROM_WIN32(GetLastError()), pFileName);
   }

tools/clang/unittests/dxc_batch/dxc_batch.cpp

@@ -206,8 +206,8 @@ static void WritePartToFile(IDxcBlob *pBlob, hlsl::DxilFourCC CC,
   const char *pData = hlsl::GetDxilPartData(*it);
   DWORD dataLen = (*it)->PartSize;
   StringRefUtf16 WideName(FName);
-  CHandle file(CreateFile2(WideName, GENERIC_WRITE, FILE_SHARE_READ,
-                           CREATE_ALWAYS, nullptr));
+  CHandle file(CreateFileW(WideName, GENERIC_WRITE, FILE_SHARE_READ, nullptr,
+                           CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr));
   if (file == INVALID_HANDLE_VALUE) {
     IFT_Data(HRESULT_FROM_WIN32(GetLastError()), WideName);
   }
@@ -717,8 +717,8 @@ static void WriteString(HANDLE hFile, _In_z_ LPCSTR value, LPCWSTR pFileName) {
 
 void DxcContext::WriteHeader(IDxcBlobEncoding *pDisassembly, IDxcBlob *pCode,
                              llvm::Twine &pVariableName, LPCWSTR pFileName) {
-  CHandle file(CreateFile2(pFileName, GENERIC_WRITE, FILE_SHARE_READ,
-                           CREATE_ALWAYS, nullptr));
+  CHandle file(CreateFileW(pFileName, GENERIC_WRITE, FILE_SHARE_READ, nullptr,
+                           CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr));
   if (file == INVALID_HANDLE_VALUE) {
     IFT_Data(HRESULT_FROM_WIN32(GetLastError()), pFileName);
   }