cgls: add a better error message for missing cgroupfs

V000V · Nov 30, 2015 · e97a847 · e97a847
1 parent 3a89c3a
commit e97a847
Showing 1 changed file with 3 additions and 1 deletion.
diff --git 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;