diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2014-10-16 14:59:50 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-05 16:26:14 -0800 |
| commit | a361858da327263e04dc521ca39091d3119ccff8 (patch) | |
| tree | 5efa814f84a21ab82f81f00ed3016e05ac0098d9 /drivers | |
| parent | e218eb32f508c828dc87d0d724c70e2cf9b7866e (diff) | |
| download | talos-obmc-linux-a361858da327263e04dc521ca39091d3119ccff8.tar.gz talos-obmc-linux-a361858da327263e04dc521ca39091d3119ccff8.zip | |
tty: Update code comment in __proc_set_tty()
The session and foreground process group pid references will be
non-NULL if tiocsctty() is stealing the controlling tty from another
session (ie., arg == 1 in tiocsctty()).
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/tty_io.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 07275d0e30a2..9d1e247ee330 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -516,8 +516,11 @@ static void __proc_set_tty(struct tty_struct *tty) { unsigned long flags; - /* We should not have a session or pgrp to put here but.... */ spin_lock_irqsave(&tty->ctrl_lock, flags); + /* + * The session and fg pgrp references will be non-NULL if + * tiocsctty() is stealing the controlling tty + */ put_pid(tty->session); put_pid(tty->pgrp); tty->pgrp = get_pid(task_pgrp(current)); |
