From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 11 Jan 2018 22:38:46 +0000 (+0100)
Subject: core: fix manager_get_unit_by_pid() special casing of manager PID
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=8a493df450829eeaacac46243ecfcc99a40e3755;p=elogind.git

core: fix manager_get_unit_by_pid() special casing of manager PID

Previously, we'd hard map PID 1 to the manager scope unit. That's wrong
however when we are run in --user mode, as the PID 1 is outside of the
subtree we manage and the manager PID might be very differently. Correct
that by checking for getpid() rather than hardcoding 1.
---

diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index cc0b7b167..46eace7cb 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -2220,7 +2220,7 @@ Unit *manager_get_unit_by_pid(Manager *m, pid_t pid) {
         if (pid <= 0)
                 return NULL;
 
-        if (pid == 1)
+        if (pid == getpid_cached())
                 return hashmap_get(m->units, SPECIAL_INIT_SCOPE);
 
         u = hashmap_get(m->watch_pids1, PID_TO_PTR(pid));