From 2e7035646eb85851171cc2e989bfa858a4f00cd4 Mon Sep 17 00:00:00 2001 From: Karel Zak Date: Thu, 12 Jul 2012 16:33:52 +0200 Subject: login: close tty before vhangup() Git-commit: 2e7035646eb85851171cc2e989bfa858a4f00cd4 Patch-mainline: v2.22-rc1 References: bnc#778842 Let's close all tty file descriptors before vhangup() call. References: https://lkml.org/lkml/2012/6/5/145 Signed-off-by: Karel Zak Signed-off-by: Jiri Slaby --- login-utils/login.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/login-utils/login.c b/login-utils/login.c index fe13d8d..c0cc00a 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); -- 1.7.12