cg_enter_current
extern int cg_enter_current(const char *cgroup);
if (cg_enter_current(cg_test_c))
if (cg_enter_current(root))
if (!cg_enter_current(child))
cg_enter_current(root);
if (cg_enter_current(parent))
cg_enter_current(root);
cg_enter_current(root);
if (!cg_enter_current(parent))
if (cg_enter_current(src))
cg_enter_current(dst);
cg_enter_current(root);
if (cg_enter_current(grps[1]))
cg_enter_current(root);
if (cg_enter_current(cg_test_a))
cg_enter_current(root);
if (cg_enter_current(cg_test_b))
if (cg_enter_current(cg_test_a))
cg_enter_current(root);
if (cg_enter_current(cg_child))
cg_enter_current(root);
if (cg_enter_current(cg_pids))
cg_enter_current(root);
if (cg_enter_current(control_group))
cg_enter_current(root);