File shadow-fix-print-login-timeout.patch of Package shadow

From 670cae834827a8f794e6f7464fa57790d911b63c Mon Sep 17 00:00:00 2001
From: SoumyaWind <121475834+SoumyaWind@users.noreply.github.com>
Date: Tue, 27 Dec 2022 17:40:17 +0530
Subject: [PATCH] shadow: Fix can not print full login timeout message

Login timed out message prints only first few bytes when write is immediately followed by exit.
Calling exit from new handler provides enough time to display full message.
---
 src/login.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/login.c b/src/login.c
index 116e2cb3..c55f4de0 100644
--- a/src/login.c
+++ b/src/login.c
@@ -120,6 +120,7 @@ static void get_pam_user (char **ptr_pam_user);
 
 static void init_env (void);
 static void alarm_handler (int);
+static void exit_handler (int);
 
 /*
  * usage - print login command usage and exit
@@ -391,11 +392,16 @@ static void init_env (void)
 #endif				/* !USE_PAM */
 }
 
+static void exit_handler (unused int sig)
+{
+	_exit (0);
+}
 
 static void alarm_handler (unused int sig)
 {
 	write (STDERR_FILENO, tmsg, strlen (tmsg));
-	_exit (0);
+	signal(SIGALRM, exit_handler);
+	alarm(2);
 }
 
 #ifdef USE_PAM