SNMP subagent in C + exec_command or similar

Hi,

I need to create a subagent within C.
Majority of the code executes 'scripts' like

dmidecode | egrep -A 2 \"BIOS Information\" | egrep \"Version:\" | cut -d ' ' -f 2

and store that as an OID's value.
I know that for this only I would NOT need .C agents at all, snmpd.conf + extend
would be just fine. However it is also needed to trace whenever someone changes
a given OID so that a trap event can ge sent to a remote host.

However I ran into strange issues.
First I have tried to use my own program that executes a given command and returns
the output of it. Basically it uses dup2()s, fork() and system() to launch the new
command. I have tested the code and it works fine within a standalone executable;
system() gets blocked until the command is running. But if I do the same from my
subagent, system() finishes AT ONCE (without any error though).

I have also tried to use the exec_command() within util_funcs, but I can't even
use that, as "struct extensible" is not being defined in any of the publicly
available headers.

Ahyeah, running net-snmp 5.4.2.1 on a Linux machine

Can anyone provide me an working subagent code that uses either exec_command()
or some alternative to run a user given command?
Thanks,



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