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-rw-r--r--sys/sys/tty.h5
-rw-r--r--sys/sys/ttydevsw.h14
2 files changed, 19 insertions, 0 deletions
diff --git a/sys/sys/tty.h b/sys/sys/tty.h
index c594e11211df..42f264b9545d 100644
--- a/sys/sys/tty.h
+++ b/sys/sys/tty.h
@@ -152,6 +152,11 @@ struct xtty {
#ifdef _KERNEL
+/* Used to distinguish between normal, callout, lock and init devices. */
+#define TTYUNIT_INIT 0x1
+#define TTYUNIT_LOCK 0x2
+#define TTYUNIT_CALLOUT 0x4
+
/* Allocation and deallocation. */
struct tty *tty_alloc(struct ttydevsw *tsw, void *softc);
struct tty *tty_alloc_mutex(struct ttydevsw *tsw, void *softc, struct mtx *mtx);
diff --git a/sys/sys/ttydevsw.h b/sys/sys/ttydevsw.h
index 4506919832f9..748ae0bee8e1 100644
--- a/sys/sys/ttydevsw.h
+++ b/sys/sys/ttydevsw.h
@@ -46,6 +46,8 @@ typedef void tsw_outwakeup_t(struct tty *tp);
typedef void tsw_inwakeup_t(struct tty *tp);
typedef int tsw_ioctl_t(struct tty *tp, u_long cmd, caddr_t data,
struct thread *td);
+typedef int tsw_cioctl_t(struct tty *tp, int unit, u_long cmd, caddr_t data,
+ struct thread *td);
typedef int tsw_param_t(struct tty *tp, struct termios *t);
typedef int tsw_modem_t(struct tty *tp, int sigon, int sigoff);
typedef int tsw_mmap_t(struct tty *tp, vm_ooffset_t offset,
@@ -63,6 +65,7 @@ struct ttydevsw {
tsw_inwakeup_t *tsw_inwakeup; /* Input can be stored again. */
tsw_ioctl_t *tsw_ioctl; /* ioctl() hooks. */
+ tsw_cioctl_t *tsw_cioctl; /* ioctl() on control devices. */
tsw_param_t *tsw_param; /* TIOCSETA device parameter setting. */
tsw_modem_t *tsw_modem; /* Modem sigon/sigoff. */
@@ -70,6 +73,8 @@ struct ttydevsw {
tsw_pktnotify_t *tsw_pktnotify; /* TIOCPKT events. */
tsw_free_t *tsw_free; /* Destructor. */
+
+ void *tsw_spare[4]; /* For future use. */
};
static __inline int
@@ -126,6 +131,15 @@ ttydevsw_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
}
static __inline int
+ttydevsw_cioctl(struct tty *tp, int unit, u_long cmd, caddr_t data, struct thread *td)
+{
+ tty_lock_assert(tp, MA_OWNED);
+ MPASS(!tty_gone(tp));
+
+ return tp->t_devsw->tsw_cioctl(tp, unit, cmd, data, td);
+}
+
+static __inline int
ttydevsw_param(struct tty *tp, struct termios *t)
{
MPASS(!tty_gone(tp));