From: Karel Zak <kzak@redhat.com>
Date: Thu, 12 Jul 2012 14:33:52 +0000 (+0200)
Subject: login: close tty before vhangup()
X-Git-Tag: v2.22-rc1~158
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2e7035646eb85851171cc2e989bfa858a4f00cd4;p=thirdparty%2Futil-linux.git

login: close tty before vhangup()

Let's close all tty file descriptors before vhangup() call.

References: https://lkml.org/lkml/2012/6/5/145
Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/login-utils/login.c b/login-utils/login.c
index fe13d8d1d4..c0cc00a667 100644
--- a/login-utils/login.c
+++ b/login-utils/login.c
@@ -409,6 +409,14 @@ static void init_tty(struct login_context *cxt)
 	/* Kill processes left on this tty */
 	tcsetattr(0, TCSAFLUSH, &ttt);
 
+	/*
+	 * Let's close file decriptors before vhangup
+	 * https://lkml.org/lkml/2012/6/5/145
+	 */
+	close(STDIN_FILENO);
+	close(STDOUT_FILENO);
+	close(STDERR_FILENO);
+
 	signal(SIGHUP, SIG_IGN);	/* so vhangup() wont kill us */
 	vhangup();
 	signal(SIGHUP, SIG_DFL);