Changing runlevel with init 1

[martvar]

When init is requested to change the runlevel, it sends the warning signal SIGTERM to all processes that are undefined in the new runlevel. It then waits 5 seconds before forcibly terminating these processes via the SIGKILL signal.
Is it ensured that this is done after all scripts with K prefix
are executed in rcn.d, where n is the number of new runlevel?

 

[Annihilannic]

I'm not sure about this, but I think init will only ever kill processes it knows about directly, i.e. those mentioned specifically in /etc/inittab. Otherwise it relies on the /etc/init.d/rc script running all of the correct /etc/rc?.d/KNNxxxx scripts to stop the appropriate services.

Annihilannic.

 

[martvar]

As in man page for init:
"When init is requested to change the runlevel, it sends the warning signal SIGTERM to all processes that are undefined in the new run-level."
In inittab I can see just one entry for runlevel 0:
l0:0:wait:/etc/rc.d/rc 0

So, it calls rc script with parameter 0
and sends SIGTERM signal for other processes running.
So it looks that some processes are stopped by
kill scripts in rc0.d, others directly by init.
But I don't know if is assured that init will not
kill any process before running kill scripts in rc0.d directory.