From 11dc5d2b649afaf9f4470ad97929ebe844604f44 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Sun, 23 Dec 2012 17:28:17 +0100
Subject: [PATCH] util: when determining controlling tty of a process properly
 handle processes without

---
 src/shared/util.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/shared/util.c b/src/shared/util.c
index d01c2061b..59d8544d0 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -2851,6 +2851,9 @@ int get_ctty_devnr(pid_t pid, dev_t *d) {
                    &ttynr) != 1)
                 return -EIO;
 
+        if (major(ttynr) == 0 && minor(ttynr) == 0)
+                return -ENOENT;
+
         *d = (dev_t) ttynr;
         return 0;
 }
-- 
2.30.2