[CentOS] Restarting a Perl-script (socket daemon) from /etc/inittab

I'll omit fork() and run my script from /etc/inittab as

pref:3:respawn:/bin/su -c '/usr/local/pref/pref.pl' nobody 2>&1 > /tmp/pref.txt

Do you think I still need setsid(); chdir("/"); and umask(0); ?

Regards
Alex