private static FileStream OpenHelper(string path, FileMode fileMode, FileAccess fileAccess, FileShare fileShare) { using (var pin = new PinCollection()) { #if DotNetCoreClrLinux FileStream fs = new FileStream(path, fileMode); UpdateFilePermission(path); return(fs); #else IntPtr handle; NativeCommon.FabricFileOpen( pin.AddBlittable(path), ToNative(fileMode), ToNative(fileAccess), ToNative(fileShare), out handle); return(new FileStream(new SafeFileHandle(handle, true), fileAccess)); #endif } }