@deftypefun {const char *} {gnutls_get_system_config_file} ( @var{void}) Returns the filename of the system wide configuration file loaded by the library. The returned pointer is valid until the library is unloaded. @strong{Returns:} a constant pointer to the config file loaded, or @code{NULL} if none @strong{Since:} 3.6.9 @end deftypefun