cgroups: vet parameters more strictly

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

diff --git a/src/lxc/cgroups/cgfsng.c b/src/lxc/cgroups/cgfsng.c
index 9135d412092cdaeafe11deca04f019f78e163c8c..beb277a39489505fe5d59b9cda6aacf46e12bb95 100644 (file)
--- a/src/lxc/cgroups/cgfsng.c
+++ b/src/lxc/cgroups/cgfsng.c
@@ -2664,8 +2664,8 @@ __cgfsng_ops static int cgfsng_set(struct cgroup_ops *ops,
        struct hierarchy *h;
        int ret = -1;
 
-       if (!ops)
-               return ret_set_errno(-1, ENOENT);
+       if (!ops || !key || !value || !name || !lxcpath)
+               return ret_errno(ENOENT);
 
        controller = must_copy_string(key);
        p = strchr(controller, '.');