Another possible kernel enhancement...

[Guy Harris]

>We created a sgid program "asgroup" to solve this problem but I
>feel that once the permission has been granted with an entry in /etc/group,
>this kind of activity should be handled seemlessly by the kernel.
>I know that BSD did such a modification but I do not see this feature
>in the 5.4 documentation.

Umm, at least at the kernel level, it *is* in System V Release 4 (you
did say "5.4 documentation", not "5.3.x documentation").  Dunno if
they've set "login" up to call "initgroups()" or not, though, so while
it may be in the kernel, it may not be there in a sufficiently
convenient form....