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path: root/drivers/tty/pty.c
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Diffstat (limited to 'drivers/tty/pty.c')
-rw-r--r--drivers/tty/pty.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index df3c642..0ce0b3e 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -171,6 +171,12 @@ static int pty_set_lock(struct tty_struct *tty, int __user *arg)
return 0;
}
+static int pty_get_lock(struct tty_struct *tty, int __user *arg)
+{
+ int locked = test_bit(TTY_PTY_LOCK, &tty->flags);
+ return put_user(locked, arg);
+}
+
/* Set the packet mode on a pty */
static int pty_set_pktmode(struct tty_struct *tty, int __user *arg)
{
@@ -193,6 +199,13 @@ static int pty_set_pktmode(struct tty_struct *tty, int __user *arg)
return 0;
}
+/* Get the packet mode of a pty */
+static int pty_get_pktmode(struct tty_struct *tty, int __user *arg)
+{
+ int pktmode = tty->packet;
+ return put_user(pktmode, arg);
+}
+
/* Send a signal to the slave */
static int pty_signal(struct tty_struct *tty, int sig)
{
@@ -420,8 +433,12 @@ static int pty_bsd_ioctl(struct tty_struct *tty,
switch (cmd) {
case TIOCSPTLCK: /* Set PT Lock (disallow slave open) */
return pty_set_lock(tty, (int __user *) arg);
+ case TIOCGPTLCK: /* Get PT Lock status */
+ return pty_get_lock(tty, (int __user *)arg);
case TIOCPKT: /* Set PT packet mode */
return pty_set_pktmode(tty, (int __user *)arg);
+ case TIOCGPKT: /* Get PT packet mode */
+ return pty_get_pktmode(tty, (int __user *)arg);
case TIOCSIG: /* Send signal to other side of pty */
return pty_signal(tty, (int) arg);
}
@@ -536,8 +553,12 @@ static int pty_unix98_ioctl(struct tty_struct *tty,
switch (cmd) {
case TIOCSPTLCK: /* Set PT Lock (disallow slave open) */
return pty_set_lock(tty, (int __user *)arg);
+ case TIOCGPTLCK: /* Get PT Lock status */
+ return pty_get_lock(tty, (int __user *)arg);
case TIOCPKT: /* Set PT packet mode */
return pty_set_pktmode(tty, (int __user *)arg);
+ case TIOCGPKT: /* Get PT packet mode */
+ return pty_get_pktmode(tty, (int __user *)arg);
case TIOCGPTN: /* Get PT Number */
return put_user(tty->index, (unsigned int __user *)arg);
case TIOCSIG: /* Send signal to other side of pty */
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