win32_error_to_errno(DWORD err_code);
extern int
-win32_get_vol_flags(const wchar_t *path, unsigned *vol_flags_ret);
+win32_get_vol_flags(const wchar_t *path, unsigned *vol_flags_ret,
+ bool *supports_SetFileShortName_ret);
extern HANDLE
win32_open_existing_file(const wchar_t *path, DWORD dwDesiredAccess);