Function gio_sys::g_file_set_attribute_string

pub unsafe extern fn g_file_set_attribute_string(file: *mut GFile,
                                                 attribute: *const c_char,
                                                 value: *const c_char,
                                                 flags: GFileQueryInfoFlags,
                                                 cancellable: *mut GCancellable,
                                                 error: *mut *mut GError)
                                                 -> gboolean