From d9f7448d82132f4c1c07105f4bc3a4f717915d30 Mon Sep 17 00:00:00 2001
From: vaxerski <vaxry@vaxry.net>
Date: Wed, 4 Jun 2025 16:54:12 +0200
Subject: [PATCH] xwayland: pad pid with leading zeroes in lockfile

fixes #10652
---
 src/xwayland/Server.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/xwayland/Server.cpp b/src/xwayland/Server.cpp
index 814bd20c..0cc16fef 100644
--- a/src/xwayland/Server.cpp
+++ b/src/xwayland/Server.cpp
@@ -199,8 +199,9 @@ bool CXWaylandServer::tryOpenSockets() {
                 continue;
             }
 
-            const std::string pidStr = std::to_string(getpid());
-            if (write(fd.get(), pidStr.c_str(), pidStr.length()) != (long)pidStr.length()) {
+            const std::string pidStr = std::format("{:010d}\n", getpid());
+            ASSERT(pidStr.length() == 11);
+            if (write(fd.get(), pidStr.c_str(), 11) != 11L) {
                 safeRemove(lockPath);
                 continue;
             }