From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 17 Nov 2017 18:24:06 +0000 (+0100)
Subject: cgroup: properly determine cgroups zombie processes belong to
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=4949a3907ec926fe478c0914721f9657c4fe847d;p=elogind.git

cgroup: properly determine cgroups zombie processes belong to

When a process becomes a zombie its cgroup might be deleted. Let's add
some minimal code to detect cases like this, so that we can still
attribute this back to the original cgroup.
---

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index 30bb4664f..71b88f1d3 100644
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -1118,6 +1118,11 @@ int cg_pid_get_path(const char *controller, pid_t pid, char **path) {
                 if (!p)
                         return -ENOMEM;
 
+                /* Truncate suffix indicating the process is a zombie */
+                e = endswith(p, " (deleted)");
+                if (e)
+                        *e = 0;
+
                 *path = p;
                 return 0;
         }