From 4f653341476e7bd81475ea29316d59254d8b957e Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Mon, 22 Aug 2022 01:19:45 +0200
Subject: term: Prevent new master while some slaves are still there

The previous master may have gone before all previous slaves have gone. If a
slave gets stuck, TTY_OPEN will kept set, and there would be no reset performed
in open_hook, thus leaking tty state and data.
---
 term/ptyio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'term/ptyio.c')

diff --git a/term/ptyio.c b/term/ptyio.c
index fadddc16..928ae0ac 100644
--- a/term/ptyio.c
+++ b/term/ptyio.c
@@ -72,7 +72,7 @@ pty_open_hook (struct trivfs_control *cntl,
 
   pthread_mutex_lock (&global_lock);
 
-  if (ptyopen)
+  if (ptyopen || nperopens)
     {
       pthread_mutex_unlock (&global_lock);
       return EBUSY;
-- 
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