From d039c62baae9453e923687a28a17c4dafceb098e Mon Sep 17 00:00:00 2001
From: Brian Somers <brian@FreeBSD.org>
Date: Mon, 2 Jan 2006 09:46:38 +0000
Subject: [PATCH] Handle the case (that I just broke) where the following
 hangs:

    $ su
    # kill -STOP $$

Pointed out by:	David Xu <davidxu@freebsd.org>
---
 usr.bin/su/su.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usr.bin/su/su.c b/usr.bin/su/su.c
index 621c351ce5a9..ba592b06279e 100644
--- a/usr.bin/su/su.c
+++ b/usr.bin/su/su.c
@@ -156,7 +156,7 @@ main(int argc, char *argv[])
 		char		* const *b;
 	}		np;
 	uid_t		ruid;
-	pid_t		child_pid, child_pgrp, pid;
+	pid_t		child_pid, pid;
 	int		asme, ch, asthem, fastlogin, prio, i, retcode,
 			statusp, setmaclabel;
 	u_int		setwhat;
@@ -396,6 +396,8 @@ main(int argc, char *argv[])
 		sigaction(SIGPIPE, &sa_pipe, NULL);
 		while ((pid = waitpid(child_pid, &statusp, WUNTRACED)) != -1) {
 			if (WIFSTOPPED(statusp)) {
+				kill(getpid(), SIGSTOP);
+				kill(child_pid, SIGCONT);
 				statusp = 1;
 				continue;
 			}