static int on_runlevel(Context *c) {
int r = 0, q, previous, runlevel;
assert(c);
/* We finished changing runlevel, so let's write the
* utmp record and send the audit msg */
/* First, get last runlevel */
q = utmp_get_runlevel(&previous, NULL);
if (q < 0) {
if (q != -ESRCH && q != -ENOENT) {
log_error("Failed to get current runlevel: %s", strerror(-q));
return q;
}
previous = 0;
}
/* Secondly, get new runlevel */
runlevel = get_current_runlevel(c);
if (runlevel < 0)
return runlevel;
if (previous == runlevel)
return 0;
#ifdef HAVE_AUDIT
if (c->audit_fd >= 0) {
_cleanup_free_ char *s = NULL;
if (asprintf(&s, "old-level=%c new-level=%c",
previous > 0 ? previous : 'N',
runlevel > 0 ? runlevel : 'N') < 0)
return log_oom();
if (audit_log_user_message(c->audit_fd, AUDIT_SYSTEM_RUNLEVEL, s, NULL, NULL, NULL, 1) < 0 &&
errno != EPERM) {
log_error("Failed to send audit message: %m");
r = -errno;
}
}
#endif
q = utmp_put_runlevel(runlevel, previous);
if (q < 0 && q != -ESRCH && q != -ENOENT) {
log_error("Failed to write utmp record: %s", strerror(-q));
r = q;
}
return r;
}
static int on_runlevel(Context *c) {
int r = 0, q, previous, runlevel;
assert(c);
/* We finished changing runlevel, so let's write the
* utmp record and send the audit msg */
/* First, get last runlevel */
if ((q = utmp_get_runlevel(&previous, NULL)) < 0) {
if (q != -ESRCH && q != -ENOENT) {
log_error("Failed to get current runlevel: %s", strerror(-q));
return q;
}
/* Hmm, we didn't find any runlevel, that means we
* have been rebooted */
r = on_reboot(c);
previous = 0;
}
/* Secondly, get new runlevel */
if ((runlevel = get_current_runlevel(c)) < 0)
return runlevel;
if (previous == runlevel)
return 0;
#ifdef HAVE_AUDIT
if (c->audit_fd >= 0) {
char *s = NULL;
if (asprintf(&s, "old-level=%c new-level=%c",
previous > 0 ? previous : 'N',
runlevel > 0 ? runlevel : 'N') < 0)
return -ENOMEM;
if (audit_log_user_message(c->audit_fd, AUDIT_SYSTEM_RUNLEVEL, s, NULL, NULL, NULL, 1) < 0) {
log_error("Failed to send audit message: %m");
r = -errno;
}
free(s);
}
#endif
if ((q = utmp_put_runlevel(0, runlevel, previous)) < 0) {
log_error("Failed to write utmp record: %s", strerror(-q));
r = q;
}
return r;
}