From 618e02c7b7f8e11fdb954a019342d745937baf55 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 16 Aug 2010 21:25:09 +0200
Subject: [PATCH] util: properly detect ttyname_r() failing

---
 src/util.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/util.c b/src/util.c
index bc227f52d..3bcce2f01 100644
--- a/src/util.c
+++ b/src/util.c
@@ -2531,11 +2531,12 @@ char* getlogname_malloc(void) {
 
 int getttyname_malloc(char **r) {
         char path[PATH_MAX], *p, *c;
+        int k;
 
         assert(r);
 
-        if (ttyname_r(STDIN_FILENO, path, sizeof(path)) < 0)
-                return -errno;
+        if ((k = ttyname_r(STDIN_FILENO, path, sizeof(path))) != 0)
+                return -k;
 
         char_array_0(path);
 
-- 
2.30.2