>>	...
>>	EINVAL
>>           The nfds argument is less than 0, or greater  than  or
>>           equal to FD_SETSIZE.
>
>This agrees with POSIX which states that select() "shall fail" with EINVAL
>if nfds > FD_SETSIZE.  This means that succeeding under such circumstances
>is forbidden.  Of course, this need only apply when the application doesn't
>override FD_SETSIZE, since doing so puts them out of POSIX-defined
>behaviour.

	but,
	- we can have file descriptor larger than FD_SETSIZE.
	- we can pass fd_set bitmap larger than FD_SETSIZE okay.
	  (see usr.sbin/traceroute6/traceroute6.c for instance)
	so i don't see the need for returning error when nfds > FD_SETSIZE.

itojun