return proper error when the model path isn't found (#2391)

microsoft · Nov 13, 2019 · 895342b · 895342b
1 parent a3a6a97
commit 895342b
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/winml/lib/Api.Core/ModelInfo.cpp b/winml/lib/Api.Core/ModelInfo.cpp
@@ -137,13 +137,22 @@ std::unique_ptr<onnx::ModelProto>
 WinML::CreateModelProto(
     const char* path) {
   int file_descriptor;
+  _set_errno(0); // clear errno
   _sopen_s(
       &file_descriptor,
       path,
       O_RDONLY | _O_SEQUENTIAL | _O_BINARY,
       _SH_DENYWR,
       _S_IREAD | _S_IWRITE);
 
+  errno_t err = 0;
+  _get_errno(&err);
+  WINML_THROW_HR_IF_TRUE_MSG(
+    __HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND),
+    err == ENOENT,
+    "File not found: %s",
+    path);
+
   WINML_THROW_HR_IF_TRUE_MSG(
       E_FAIL,
       0 > file_descriptor,