Commit 5b239542 authored by Peter Hurley's avatar Peter Hurley Committed by Greg Kroah-Hartman

tty: Replace open-coded tty_get_pgrp()

Replace open-coded instances of tty_get_pgrp().
Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Reviewed-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8a8a5510
......@@ -207,14 +207,11 @@ static int pty_get_pktmode(struct tty_struct *tty, int __user *arg)
/* Send a signal to the slave */
static int pty_signal(struct tty_struct *tty, int sig)
{
unsigned long flags;
struct pid *pgrp;
if (tty->link) {
spin_lock_irqsave(&tty->link->ctrl_lock, flags);
pgrp = get_pid(tty->link->pgrp);
spin_unlock_irqrestore(&tty->link->ctrl_lock, flags);
pgrp = tty_get_pgrp(tty->link);
if (pgrp)
kill_pgrp(pgrp, sig, 1);
put_pid(pgrp);
}
......@@ -278,7 +275,6 @@ static void pty_set_termios(struct tty_struct *tty,
static int pty_resize(struct tty_struct *tty, struct winsize *ws)
{
struct pid *pgrp, *rpgrp;
unsigned long flags;
struct tty_struct *pty = tty->link;
/* For a PTY we need to lock the tty side */
......@@ -286,17 +282,9 @@ static int pty_resize(struct tty_struct *tty, struct winsize *ws)
if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
goto done;
/* Get the PID values and reference them so we can
avoid holding the tty ctrl lock while sending signals.
We need to lock these individually however. */
spin_lock_irqsave(&tty->ctrl_lock, flags);
pgrp = get_pid(tty->pgrp);
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
spin_lock_irqsave(&pty->ctrl_lock, flags);
rpgrp = get_pid(pty->pgrp);
spin_unlock_irqrestore(&pty->ctrl_lock, flags);
/* Signal the foreground process group of both ptys */
pgrp = tty_get_pgrp(tty);
rpgrp = tty_get_pgrp(pty);
if (pgrp)
kill_pgrp(pgrp, SIGWINCH, 1);
......
......@@ -2324,18 +2324,14 @@ static int tiocgwinsz(struct tty_struct *tty, struct winsize __user *arg)
int tty_do_resize(struct tty_struct *tty, struct winsize *ws)
{
struct pid *pgrp;
unsigned long flags;
/* Lock the tty */
mutex_lock(&tty->winsize_mutex);
if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
goto done;
/* Get the PID values and reference them so we can
avoid holding the tty ctrl lock while sending signals */
spin_lock_irqsave(&tty->ctrl_lock, flags);
pgrp = get_pid(tty->pgrp);
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
/* Signal the foreground process group */
pgrp = tty_get_pgrp(tty);
if (pgrp)
kill_pgrp(pgrp, SIGWINCH, 1);
put_pid(pgrp);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment