From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 22 Nov 2022 11:56:38 +0000 (+0100)
Subject: utmp-wtmp: fix error in case isatty() fails
X-Git-Tag: v253-rc1~458^2~2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=80b780ba178a84b248ecee47eef82358480c9492;p=thirdparty%2Fsystemd.git

utmp-wtmp: fix error in case isatty() fails
---

diff --git a/src/shared/utmp-wtmp.c b/src/shared/utmp-wtmp.c
index d2c8473c60f..20add0e81b0 100644
--- a/src/shared/utmp-wtmp.c
+++ b/src/shared/utmp-wtmp.c
@@ -292,8 +292,10 @@ static int write_to_terminal(const char *tty, const char *message) {
         assert(message);
 
         fd = open(tty, O_WRONLY|O_NONBLOCK|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0 || !isatty(fd))
+        if (fd < 0)
                 return -errno;
+        if (!isatty(fd))
+                return -ENOTTY;
 
         p = message;
         left = strlen(message);