From 70c5fe5cd8625050dd7b4e300c0543ff55349605 Mon Sep 17 00:00:00 2001
From: Vaxry <vaxry@vaxry.net>
Date: Mon, 5 Jan 2026 15:06:28 +0100
Subject: [PATCH] systemd/sdDaemon: fix incorrect strnlen

---
 src/helpers/SdDaemon.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/helpers/SdDaemon.cpp b/src/helpers/SdDaemon.cpp
index c3008807..b6c207d8 100644
--- a/src/helpers/SdDaemon.cpp
+++ b/src/helpers/SdDaemon.cpp
@@ -38,10 +38,10 @@ int NSystemd::sdNotify(int unsetEnvironment, const char* state) {
     if (!addr)
         return 0;
 
-    // address length must be at most this; see man 7 unix
-    size_t             addrLen = strnlen(addr, 107);
-
     struct sockaddr_un unixAddr = {0};
+
+    size_t             addrLen = strnlen(addr, sizeof(unixAddr.sun_path) - 1);
+
     unixAddr.sun_family = AF_UNIX;
     strncpy(unixAddr.sun_path, addr, addrLen);
     if (unixAddr.sun_path[0] == '@')