can't access tty; job control turned off - solution: setsid cttyhack sh

[Jason]

  It took me some time to figure this out so I'm sending this to the 
list in case it helps others.

If you're getting this message when you launch a shell (sh):

      "can't access tty; job control turned off"

And you've looked at the FAQ on the subject:

      http://www.busybox.net/FAQ.html#job_control

But you're still having a problem.  Try this:

      setsid cttyhack sh

It will give you a controlling terminal (tty1) with job control turned 
on without requiring a login.

Note to web admin: It would be helpful if "setsid cttyhack sh" was 
mentioned in the FAQ as a solution, as the solutions presented in the 
FAQ do not work from the /init script within initramfs.  At least they 
wouldn't work for me.  The console would hang if I tried to do __ exec 
setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1' __ from my /init script.

Also, so the console doesn't hang when I type "exit", I do this in my 
/init script:

      setsid cttyhack sh
# reboot if user types "exit"
echo s > /proc/sysrq-trigger  # Sync
      echo u > /proc/sysrq-trigger  # Unmount (actually remounts 
everything read-only)
      echo b > /proc/sysrq-trigger  # reBoot

This requires that you have CONFIG_MAGIC_SYSRQ enabled in your kernel.  
If someone has a better solution, please share.  The reboot, halt, and 
shutdown commands provided by busybox don't do anything for me.  I 
assume they require busybox's init to be running.

Jason