From: Mantas Mikulėnas <grawity@gmail.com>
Date: Mon, 30 Nov 2015 06:48:29 +0000 (+0200)
Subject: cgls: add a better error message for missing cgroupfs
X-Git-Tag: v229~245^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e97a84757f76b9c4c401bbc6fa147e35204b2a1b;p=thirdparty%2Fsystemd.git

cgls: add a better error message for missing cgroupfs
---

diff --git a/src/cgls/cgls.c b/src/cgls/cgls.c
index 01140c73d85..e6277a9084d 100644
--- a/src/cgls/cgls.c
+++ b/src/cgls/cgls.c
@@ -131,7 +131,9 @@ static int get_cgroup_root(char **ret) {
 
         if (!arg_machine) {
                 r = cg_get_root_path(ret);
-                if (r < 0)
+                if (r == -ENOEXEC)
+                        return log_error_errno(r, "Failed to get root control group path: No cgroup filesystem mounted on /sys/fs/cgroup");
+                else if (r < 0)
                         return log_error_errno(r, "Failed to get root control group path: %m");
 
                 return 0;