From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 2 Jul 2025 14:25:00 +0000 (+0200)
Subject: logind: use memdup_suffix0() where appropiate
X-Git-Tag: v258-rc1~212^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d3f04a6fa541280a8a205a3d4d2313a043b7a32d;p=thirdparty%2Fsystemd.git

logind: use memdup_suffix0() where appropiate

memdup_suffix0() is the call of choice when we are dealing with an input
that might not be NUL terminated. strndup() assumes NUL termination.
---

diff --git a/src/login/logind-utmp.c b/src/login/logind-utmp.c
index 8305ae743fa..8f6914f7250 100644
--- a/src/login/logind-utmp.c
+++ b/src/login/logind-utmp.c
@@ -43,7 +43,7 @@ int manager_read_utmp(Manager *m) {
                 if (!pid_is_valid(u->ut_pid))
                         continue;
 
-                t = strndup(u->ut_line, sizeof(u->ut_line));
+                t = memdup_suffix0(u->ut_line, sizeof(u->ut_line));
                 if (!t)
                         return log_oom();