I'm running telnetd and for the login program I'm using a bash script that sets a few variables and the runs alsamixer. The point being that anyone on the local network should be able to adjust the volume by telnetting to the dedicated music box. Mostly it works fine, but there is one problem.
When a user decides to kill his telnet client (rather than the alsamixer running within) the alsamixer process on the music box doesn't die, instead it goes nuts eating up any available cpu cycles.
The way I understand it, what happens is the following:
1. When the telnet client dies, telnetd dies.
2. telnetd does not explicitly kill the login program before dying, but bash, upon having its stdin closed, exits.
3. Alsamixer freaks out.

What I want is for bash to kill its children properly before exiting. Is this possible?
Another solution is of course to write a wrapper for alsamixer, but I'd rather not.
All ideas are welcome. The less work, the better!

You could put a line in bash_logout that would kill all the programs, that were run from that console (like tty1 or tty2 or any other)

Good idea!
Unfortunately, bash doesn't seem to run .bash_logout before exiting.
I'm invoking it with --login, and I've verified that .bash_profile is being run. Also, running bash manually, it does run .bash_logout upon exiting.
Perhaps bash is being killed more brutally than I first thought?

If it is of any interest, the line in inetd.conf currently looks like this:
telnet stream tcp6 nowait root /usr/sbin/tcpd in.telnetd -L /usr/local/bin/loginmixer

loginmixer is a simple script with just one line:
exec /bin/bash --login /usr/local/bin/aumixbark

aumixbark is the script that launches alsamixer (yes it's a bad name...).
It's a bit of a mess since I was unable to figure out how to give options to the login program directly from inetd.conf.

If I leave exec out of loginmixer the only difference is that I have one extra process running while the telnet session is up. When telnetd dies, so does loginmixer, but alsamixer still keeps going.

Any ideas as to what is really going on here?