rlm_perl forking zombies

[david.suarezdelis at telefonica.es]

Thanks for the reply!

> david.suarezdelis at telefonica.es wrote:
> > By itself, this works and no zombies are left behind, as expected.
However,
> > when used with FreeRadius, zombies are left behind.

>  FreeRADIUS has a wrapper around fork() that modules are expected to
> use.  The reason is that the server is threaded, and some modules want
> to wait for the child to return.  In a threaded environment, the
> SIGCHLD may be delivered to *another* thread, which causes problems.

>   Hence the wrapper, which catches all of the SIGCHLD's, and ensures
> they're delivered to the correct destination.

I understand the problem... How can I use/call the wrapper from rlm_perl
(if it's possible at all)?

>   A solution is to modify src/main/threads.c, function
> reap_children().  Right now it loops over known PIDs, and waits on
> them.  Change it to wait for any PID, and then look that PID up in the
> list.  If it's known, it's updated.  Otherwise, the status is tossed.

I have glanced at the code, but I'm not sure I can put time to do that
at the moment... If there's a way to use the standard wrapper to fork()
from rlm_perl, I'll do it... Anyway I'll speak with the bosses about
the possibility...

thanks!
david

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