> Look at 5th field of /etc/inetd.conf, please.
> How do you implement the feature without having root privilege in inetd?

Also, please look at the following lines /etc/inetd.conf on OpenBSD
which use BSD auth instead of PAM.

#ftp	stream  tcp     nowait  root    /usr/libexec/ftpd       ftpd -US
#telnet stream  tcp     nowait  root    /usr/libexec/telnetd    telnetd -k
#shell  stream  tcp     nowait  root    /usr/libexec/rshd       rshd -L
#shell  stream  tcp6    nowait  root    /usr/libexec/rshd       rshd -L

As you see, these daemons need root privilege even with BSD auth,
because they need to call setuid(pwd->pw_uid) and initgroups(3).
--
soda