From 624e4fcffa8c7e3c5d30c10a6b3965db6e5e0f4f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Mon, 15 Jul 2019 17:29:56 +0200
Subject: [PATCH] pid1: fix GetUnitProcesses

This effectively reverts one chunk of 657ee2d82b73818d0ee8c3c5962c1cb2dbd52b76.

For a while I couldn't figure out why 'systemctl status -- -.slice' fails to
list any processes...
---
 src/core/dbus-unit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
index 53daa9c2ec..220b4c2372 100644
--- a/src/core/dbus-unit.c
+++ b/src/core/dbus-unit.c
@@ -1062,7 +1062,7 @@ static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
                 if (r == 0)
                         break;
 
-                j = path_join(p, g);
+                j = path_join(empty_to_root(p), g);
                 if (!j)
                         return -ENOMEM;