>>2) I have had a look at the BSD auth implementation proposal which you
>>   posted in [3].  All BSD auth logic resides in libutil, and there is
>>   no reason to have pw_dup(3) separated from it in libc; neither does
>>   pw_dup(3) access any libc internals in which case it being
>>   implemented in libc would be a sensible choice.  It's also worth
>>   noting that the bulk of password database utility functions already
>>   reside in libutil.
>
>	it was a mistake.  all auth*.c has to reside in libc.

	therefore pw_dup() has to be in libc.

itojun