cgroups/cgfsng: rework cgfsng_{get,set}()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

diff --git a/src/lxc/cgroups/cgfsng.c b/src/lxc/cgroups/cgfsng.c
index 3cb2fe08de70f33caa017d6c1814d0c85279ba16..30bf3093d4f7699caf34bcddc7c30fa957a8deaf 100644 (file)
--- a/src/lxc/cgroups/cgfsng.c
+++ b/src/lxc/cgroups/cgfsng.c
@@ -2353,6 +2353,9 @@ __cgfsng_ops static int cgfsng_get(struct cgroup_ops *ops, const char *filename,
        struct hierarchy *h;
        int ret = -1;
 
+       if (!ops)
+               return ret_set_errno(-1, ENOENT);
+
        controller = must_copy_string(filename);
        p = strchr(controller, '.');
        if (p)
@@ -2493,6 +2496,9 @@ __cgfsng_ops static int cgfsng_set(struct cgroup_ops *ops,
        struct hierarchy *h;
        int ret = -1;
 
+       if (!ops)
+               return ret_set_errno(-1, ENOENT);
+
        controller = must_copy_string(key);
        p = strchr(controller, '.');
        if (p)