/**
* service_stop_dynamic - Stop disabled/removed dynamic services
*/
void service_stop_dynamic(void)
{
svc_t *svc;
_d("Stopping disabled/removed services ...");
for (svc = svc_dynamic_iterator(1); svc; svc = svc_dynamic_iterator(0)) {
if (svc_is_changed(svc))
service_stop(svc);
}
_d("All disabled/removed services have been stoppped, calling reconf hooks ...");
plugin_run_hooks(HOOK_SVC_RECONF); /* Reconfigure HW/VLANs/etc here */
}
/*
* Assert condition only if the service is running, but not if it's
* recently been changed or while it's starting up.
*
* We must wait for the service to create/touch its pidfile.
*/
static void pidfile_reconf(void *_null)
{
static char name[MAX_ARG_LEN];
svc_t *svc;
(void)(_null);
for (svc = svc_iterator(1); svc; svc = svc_iterator(0)) {
if (svc->state == SVC_RUNNING_STATE && !svc_is_changed(svc) && !svc_is_starting(svc)) {
snprintf(name, MAX_ARG_LEN, "svc%s", svc->cmd);
cond_set_path(cond_path(name), COND_ON);
}
}
}
/*
* Unless there are services we must collect first (wait for
* them to stop), we can call HOOK_SVC_RECONF here.
*/
static int service_stop_done(svc_t *svc)
{
if (svc && !svc_is_changed(svc))
return 0;
if (svc && dyn_stop_cnt)
dyn_stop_cnt--;
_d("dyn_stop_cnt %d", dyn_stop_cnt);
if (!dyn_stop_cnt) {
_d("All disabled/removed services have been stoppped, calling reconf hooks ...");
plugin_run_hooks(HOOK_SVC_RECONF); /* Reconfigure HW/VLANs/etc here */
/* Finish off by starting/reload modified/new services */
service_start_dynamic();
}
return 1;
}
/**
* service_stop_dynamic - Stop disabled/removed dynamic services
*
* We call it "stop", but in reality it could be "skip" as well, if the
* service supports SIGHUP. This function is just one step on the road
* to reload all modified services.
*/
void service_stop_dynamic(void)
{
svc_t *svc;
_d("Stopping disabled/removed services ...");
for (svc = svc_dynamic_iterator(1); svc; svc = svc_dynamic_iterator(0)) {
if (svc_is_changed(svc) && svc->pid) {
svc_state_t new_state = SVC_RELOAD_STATE;
if (svc_is_removed(svc))
new_state = SVC_HALTED_STATE;
if (!svc_has_sighup(svc))
dyn_stop_cnt++;
_d("Marking service %s as state %d", svc->cmd, new_state);
service_stop(svc, new_state);
}
}
/* Check if we need to collect any services before calling user HOOK */
service_stop_done(NULL);
}
/**
* 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);
}
