linux-kernel - [PATCH] Support compat_ioctl get/set termios

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Message-ID: <1304173112.11652.2.camel@localhost.localdomain>
Date:	Sat, 30 Apr 2011 16:18:32 +0200
From:	Thomas Meyer <thomas@...3r.de>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] Support compat_ioctl get/set termios_locked

plymouth complains about those two missing ioctls.

Signed-off-by: Thomas Meyer <thomas@...3r.de>
---
 drivers/tty/n_tty.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 428f4fe..8d1073f 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -40,6 +40,7 @@
 #include <linux/tty.h>
 #include <linux/timer.h>
 #include <linux/ctype.h>
+#include <linux/compat.h>
 #include <linux/mm.h>
 #include <linux/string.h>
 #include <linux/slab.h>
@@ -2088,6 +2089,20 @@ static int n_tty_ioctl(struct tty_struct *tty, struct file *file,
 	}
 }
 
+#ifdef CONFIG_COMPAT
+static long n_tty_compat_ioctl(struct tty_struct *tty, struct file *file,
+		              unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case TIOCGLCKTRMIOS:
+	case TIOCSLCKTRMIOS:
+		return tty_mode_ioctl(tty, file, cmd, (unsigned long) compat_ptr(arg));
+	default:
+		return -ENOIOCTLCMD;
+	}
+}
+#endif
+
 struct tty_ldisc_ops tty_ldisc_N_TTY = {
 	.magic           = TTY_LDISC_MAGIC,
 	.name            = "n_tty",
@@ -2098,6 +2113,9 @@ struct tty_ldisc_ops tty_ldisc_N_TTY = {
 	.read            = n_tty_read,
 	.write           = n_tty_write,
 	.ioctl           = n_tty_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl    = n_tty_compat_ioctl,
+#endif
 	.set_termios     = n_tty_set_termios,
 	.poll            = n_tty_poll,
 	.receive_buf     = n_tty_receive_buf,
-- 
1.7.4.4


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