diff options
Diffstat (limited to 'drivers/tty/pty.c')
| -rw-r--r-- | drivers/tty/pty.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 5e2374580e27..9b5d4ae5d8f2 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -29,6 +29,7 @@ #include <linux/file.h> #include <linux/ioctl.h> #include <linux/compat.h> +#include "tty.h" #undef TTY_DEBUG_HANGUP #ifdef TTY_DEBUG_HANGUP @@ -159,6 +160,7 @@ static int pty_chars_in_buffer(struct tty_struct *tty) static int pty_set_lock(struct tty_struct *tty, int __user *arg) { int val; + if (get_user(val, arg)) return -EFAULT; if (val) @@ -171,6 +173,7 @@ static int pty_set_lock(struct tty_struct *tty, int __user *arg) 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); } @@ -200,6 +203,7 @@ static int pty_set_pktmode(struct tty_struct *tty, int __user *arg) static int pty_get_pktmode(struct tty_struct *tty, int __user *arg) { int pktmode = tty->packet; + return put_user(pktmode, arg); } @@ -463,6 +467,7 @@ static int pty_install(struct tty_driver *driver, struct tty_struct *tty) static void pty_remove(struct tty_driver *driver, struct tty_struct *tty) { struct tty_struct *pair = tty->link; + driver->ttys[tty->index] = NULL; if (pair) pair->driver->ttys[pair->index] = NULL; |