Re: 2.6.25.3: su gets stuck for root

David Newall
2008-06-02T09:01:58Z

Alan Cox wrote:
> Not really. The task would get suspended if it attempted to change the
> tty settings while not being session leader. This is part of the POSIX
> and BSD job control.

I haven't heard about this new restriction, but it begs the observation
that stty, when forked from a shell (the usual case), is never a session
leader.