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systemd/SOURCES/0931-utmp-wtmp-fix-error-in...

29 lines
938 B

From c57daab191c6551ac757576fcf7df45fd9790b6b Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 22 Nov 2022 12:56:38 +0100
Subject: [PATCH] utmp-wtmp: fix error in case isatty() fails
(cherry picked from commit 80b780ba178a84b248ecee47eef82358480c9492)
Related: #2172846
---
src/shared/utmp-wtmp.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/shared/utmp-wtmp.c b/src/shared/utmp-wtmp.c
index ef9427fa7b..743b784489 100644
--- a/src/shared/utmp-wtmp.c
+++ b/src/shared/utmp-wtmp.c
@@ -312,8 +312,10 @@ 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);