1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2013 Zbigniew Jędrzejewski-Szmek
10 #include "login-util.h"
11 #include "string-util.h"
13 bool session_id_valid(const char *id) {
18 return id[strspn(id, LETTERS DIGITS)] == '\0';