_cleanup_free_ char *s = NULL;
int r;
+ /* skip export if kdbus is not active */
+ if (access("/dev/kdbus", F_OK) < 0)
+ return PAM_SUCCESS;
+
if (asprintf(&s, KERNEL_USER_BUS_FMT ";" UNIX_USER_BUS_FMT,
(unsigned long) uid, runtime) < 0) {
pam_syslog(handle, LOG_ERR, "Failed to set bus variable.");