From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 6 Jan 2025 16:19:34 +0000 (+0100)
Subject: process-util: a process from a foreign pidns is definitely not our child
X-Git-Tag: v258-rc1~1690
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9ed2725867bb1e4248fc0fadcb697d49c76f8bd2;p=thirdparty%2Fsystemd.git

process-util: a process from a foreign pidns is definitely not our child

Addresses: https://github.com/systemd/systemd/pull/35242#pullrequestreview-2531712318
---

diff --git a/src/basic/process-util.c b/src/basic/process-util.c
index 53ac2717e38..e3c696a3a6c 100644
--- a/src/basic/process-util.c
+++ b/src/basic/process-util.c
@@ -1096,6 +1096,8 @@ int pidref_is_my_child(const PidRef *pid) {
 
         pid_t ppid;
         r = pidref_get_ppid(pid, &ppid);
+        if (r == -EADDRNOTAVAIL) /* if this process is outside of our pidns, it is definitely not our child */
+                return false;
         if (r < 0)
                 return r;