diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index bdae832..bbc42e6 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -780,6 +780,8 @@ static void echo_erase_tab(unsigned int num_chars, int after_tab,
 
 static void echo_char_raw(unsigned char c, struct tty_struct *tty)
 {
+	if (L_EXTPROC(tty)) return;
+
 	mutex_lock(&tty->echo_lock);
 
 	if (c == ECHO_OP_START) {
@@ -808,6 +810,8 @@ static void echo_char_raw(unsigned char c, struct tty_struct *tty)
 
 static void echo_char(unsigned char c, struct tty_struct *tty)
 {
+	if (L_EXTPROC(tty)) return;
+
 	mutex_lock(&tty->echo_lock);
 
 	if (c == ECHO_OP_START) {
@@ -1767,6 +1771,13 @@ do_it_again:
 				break;
 			}
 			nr--;
+			if (cs & TIOCPKT_IOCTL) {
+				c = sizeof(struct termios);
+				if (c > nr) c = nr;
+				copy_to_user(b, tty->link->termios, c);
+				nr -= c;
+				b += c;
+			}
 			break;
 		}
 		/* This statement must be first before checking for input
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index d83a431..7485efb 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -315,12 +315,21 @@ free_mem_out:
 	return -ENOMEM;
 }
 
+static int pty_signal(struct tty_struct *tty, int sig)
+{
+	if (tty->link && tty->link->pgrp > 0)
+		kill_pgrp(tty->link->pgrp, sig, 1);
+	return 0;
+}
+
 static int pty_bsd_ioctl(struct tty_struct *tty, struct file *file,
 			 unsigned int cmd, unsigned long arg)
 {
 	switch (cmd) {
 	case TIOCSPTLCK: /* Set PT Lock (disallow slave open) */
 		return pty_set_lock(tty, (int __user *) arg);
+	case TIOCSIG:    /* Send signal to other side of pty */
+		return pty_signal(tty, (int) arg);
 	}
 	return -ENOIOCTLCMD;
 }
diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c
index 6bd5f88..0c18899 100644
--- a/drivers/char/tty_ioctl.c
+++ b/drivers/char/tty_ioctl.c
@@ -517,19 +517,25 @@ static void change_termios(struct tty_struct *tty, struct ktermios *new_termios)
 
 	/* See if packet mode change of state. */
 	if (tty->link && tty->link->packet) {
+		int extproc = (old_termios.c_lflag & EXTPROC) |
+				(tty->termios->c_lflag & EXTPROC);
 		int old_flow = ((old_termios.c_iflag & IXON) &&
 				(old_termios.c_cc[VSTOP] == '\023') &&
 				(old_termios.c_cc[VSTART] == '\021'));
 		int new_flow = (I_IXON(tty) &&
 				STOP_CHAR(tty) == '\023' &&
 				START_CHAR(tty) == '\021');
-		if (old_flow != new_flow) {
+		if ((old_flow != new_flow) || extproc) {
 			spin_lock_irqsave(&tty->ctrl_lock, flags);
-			tty->ctrl_status &= ~(TIOCPKT_DOSTOP | TIOCPKT_NOSTOP);
-			if (new_flow)
-				tty->ctrl_status |= TIOCPKT_DOSTOP;
-			else
-				tty->ctrl_status |= TIOCPKT_NOSTOP;
+			if (old_flow != new_flow) {
+				tty->ctrl_status &= ~(TIOCPKT_DOSTOP | TIOCPKT_NOSTOP);
+				if (new_flow)
+					tty->ctrl_status |= TIOCPKT_DOSTOP;
+				else
+					tty->ctrl_status |= TIOCPKT_NOSTOP;
+			}
+			if (extproc)
+				tty->ctrl_status |= TIOCPKT_IOCTL;
 			spin_unlock_irqrestore(&tty->ctrl_lock, flags);
 			wake_up_interruptible(&tty->link->read_wait);
 		}
diff --git a/include/asm-generic/ioctls.h b/include/asm-generic/ioctls.h
index a799e20..3ac6908 100644
--- a/include/asm-generic/ioctls.h
+++ b/include/asm-generic/ioctls.h
@@ -65,6 +65,7 @@
 #define TIOCSRS485	0x542F
 #define TIOCGPTN	_IOR('T', 0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
 #define TIOCSPTLCK	_IOW('T', 0x31, int)  /* Lock/unlock Pty */
+#define TIOCSIG		_IO ('T', 0x32)  /* pty: generate signal */
 #define TCGETX		0x5432 /* SYS5 TCGETX compatibility */
 #define TCSETX		0x5433
 #define TCSETXF		0x5434
@@ -104,6 +105,7 @@
 #define TIOCPKT_START		 8
 #define TIOCPKT_NOSTOP		16
 #define TIOCPKT_DOSTOP		32
+#define TIOCPKT_IOCTL		64
 
 #define TIOCSER_TEMT	0x01	/* Transmitter physically empty */
 
diff --git a/include/asm-generic/termbits.h b/include/asm-generic/termbits.h
index 1c9773d..232b478 100644
--- a/include/asm-generic/termbits.h
+++ b/include/asm-generic/termbits.h
@@ -178,6 +178,7 @@ struct ktermios {
 #define FLUSHO	0010000
 #define PENDIN	0040000
 #define IEXTEN	0100000
+#define EXTPROC	0200000
 
 /* tcflow() and TCXONC use these */
 #define	TCOOFF		0
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 4409967..3cfe448 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -178,6 +178,7 @@ struct tty_bufhead {
 #define L_FLUSHO(tty)	_L_FLAG((tty), FLUSHO)
 #define L_PENDIN(tty)	_L_FLAG((tty), PENDIN)
 #define L_IEXTEN(tty)	_L_FLAG((tty), IEXTEN)
+#define L_EXTPROC(tty)	_L_FLAG((tty), EXTPROC)
 
 struct device;
 struct signal_struct;