From: Matthijs van Duin <matthijsvanduin@gmail.com>
Date: Thu, 19 Jul 2018 08:43:46 +0000 (+0200)
Subject: pty: fix O_CLOEXEC for TIOCGPTPEER
X-Git-Tag: v4.17.19~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=965f2fed020e56bfdf09e08a86e2d63902213f7b;p=thirdparty%2Fkernel%2Fstable.git

pty: fix O_CLOEXEC for TIOCGPTPEER

commit 36ecc1481dc8d8c52d43ba18c6b642c1d2fde789 upstream.

It was being ignored because the flags were not passed to fd allocation.

Fixes: 54ebbfb16034 ("tty: add TIOCGPTPEER ioctl")
Signed-off-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Acked-by: Aleksa Sarai <asarai@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index b0e2c4847a5d6..678406e0948b2 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -625,7 +625,7 @@ int ptm_open_peer(struct file *master, struct tty_struct *tty, int flags)
 	if (tty->driver != ptm_driver)
 		return -EIO;
 
-	fd = get_unused_fd_flags(0);
+	fd = get_unused_fd_flags(flags);
 	if (fd < 0) {
 		retval = fd;
 		goto err;