/**
* service_runlevel - Change to a new runlevel
* @newlevel: New runlevel to activate
*
* Stops all services not in @newlevel and starts, or lets continue to run,
* those in @newlevel. Also updates @prevlevel and active @runlevel.
*/
void service_runlevel(int newlevel)
{
svc_t *svc;
if (runlevel == newlevel)
return;
if (newlevel < 0 || newlevel > 9)
return;
prevlevel = runlevel;
runlevel = newlevel;
_d("Setting new runlevel --> %d <-- previous %d", runlevel, prevlevel);
runlevel_set(prevlevel, newlevel);
/* Make sure to (re)load all *.conf in /etc/finit.d/ */
conf_reload_dynamic();
_d("Stopping services services not allowed in new runlevel ...");
for (svc = svc_iterator(1); svc; svc = svc_iterator(0)) {
if (!svc_in_runlevel(svc, runlevel)) {
#ifndef INETD_DISABLED
if (svc_is_inetd(svc))
inetd_stop(&svc->inetd);
else
#endif
service_stop(svc);
}
/* ... or disabled/removed services from /etc/finit.d/ */
if (svc_is_dynamic(svc) && svc_is_changed(svc))
service_stop(svc);
}
/* Prev runlevel services stopped, call hooks before starting new runlevel ... */
_d("All services have been stoppped, calling runlevel change hooks ...");
plugin_run_hooks(HOOK_RUNLEVEL_CHANGE); /* Reconfigure HW/VLANs/etc here */
_d("Starting services services new to this runlevel ...");
for (svc = svc_iterator(1); svc; svc = svc_iterator(0)) {
#ifndef INETD_DISABLED
/* Inetd services have slightly different semantics */
if (svc_is_inetd(svc)) {
if (svc_in_runlevel(svc, runlevel))
inetd_start(&svc->inetd);
continue;
}
#endif
/* All other services consult their callback here */
svc_dance(svc);
}
/* Cleanup stale services */
svc_clean_dynamic(service_unregister);
if (0 == runlevel) {
do_shutdown(SIGUSR2);
return;
}
if (6 == runlevel) {
do_shutdown(SIGUSR1);
return;
}
if (runlevel == 1)
touch("/etc/nologin"); /* Disable login in single-user mode */
else
erase("/etc/nologin");
if (0 != prevlevel)
tty_runlevel(runlevel);
}
/**
* svc_runlevel - Change to a new runlevel
* @newlevel: New runlevel to activate
*
* Stops all services not in @newlevel and starts, or lets continue to run,
* those in @newlevel. Also updates @prevlevel and active @runlevel.
*/
void svc_runlevel(int newlevel)
{
svc_t *svc;
if (runlevel == newlevel)
return;
if (newlevel < 0 || newlevel > 9)
return;
prevlevel = runlevel;
runlevel = newlevel;
utmp_save(prevlevel, newlevel);
_d("Setting new runlevel --> %d <-- previous %d", runlevel, prevlevel);
for (svc = svc_iterator(1); svc; svc = svc_iterator(0)) {
svc_cmd_t cmd;
/* Inetd services have slightly different semantics */
#ifndef INETD_DISABLED
if (svc->type == SVC_CMD_INETD) {
if (!ISSET(svc->runlevels, runlevel))
inetd_stop(&svc->inetd);
else
inetd_start(&svc->inetd);
continue;
}
#endif
/* All other services consult their callback here */
cmd = svc_enabled(svc, 0, NULL);
if (svc->pid) {
if (cmd == SVC_STOP)
svc_stop(svc);
else if (cmd == SVC_RELOAD)
svc_reload(svc);
} else {
if (cmd == SVC_START)
svc_start(svc);
}
}
if (0 == runlevel) {
do_shutdown(SIGUSR2);
return;
}
if (6 == runlevel) {
do_shutdown(SIGUSR1);
return;
}
if (runlevel == 1)
touch("/etc/nologin"); /* Disable login in single-user mode */
else
erase("/etc/nologin");
if (0 != prevlevel)
tty_runlevel(runlevel);
}
