diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tty.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index 0daa8a72b176..a0e03309a379 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -467,6 +467,11 @@ extern int tty_port_close_start(struct tty_port *port, extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty); extern void tty_port_close(struct tty_port *port, struct tty_struct *tty, struct file *filp); +extern inline int tty_port_users(struct tty_port *port) +{ + return port->count + port->blocked_open; +} + extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc); extern int tty_unregister_ldisc(int disc); extern int tty_set_ldisc(struct tty_struct *tty, int ldisc); |