How to get process command line?

Hi,

I'm playing around with Chrony and used setproctitle() to set the title
of the involved process (main, helper and NTS helper).

And I can't figure out how to receive the command line the application
was started with after using setproctitle().

E.g. running 'ps -o command' outputs before setproctitle():

$ ps -auxo command | fgrep chronyd
_chrony 43240 <snip> chronyd -F 0 -u _chrony -d -f /etc/chrony.conf
_chrony 77494 <snip> chronyd -F 0 -u _chrony -d -f /etc/chrony.conf
root 18016 <snip> chronyd -F 0 -u _chrony -d -f /etc/chrony.conf

running 'ps -o command' outputs after setproctitle():

$ ps -auxo command | fgrep chronyd
_chrony 47331 <snip> chronyd: server (chronyd)
_chrony 64136 <snip> chronyd: NTS helper (chronyd)
root 56489 <snip> chronyd: PRV helper (chronyd)

What tool would show the calling command line? Would someone be able to
nudge me into the right direction?


/Thomas