Re: 2.6.25.3: su gets stuck for root

Alan Cox
2008-06-02T09:36:23Z

On Mon, 02 Jun 2008 18:31:34 +0930
David Newall <davidn@davidnewall.com> wrote:

> 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.

Sorry I mean part of the current session. I was thinking about the
specific case of bash or the ssh->bash setup where the question would be
whether the shell was session leader.

Someone who can dup this needs to instrument it in tty_ioctl really.

Alan