SHFL_CF_ACT_FAIL_IF_NEW
SHFL_CF_ACT_FAIL_IF_NEW | SHFL_CF_ACCESS_READ;
params.create_flags |= SHFL_CF_ACT_FAIL_IF_NEW;
params.create_flags = SHFL_CF_LOOKUP | SHFL_CF_ACT_FAIL_IF_NEW;
SHFL_CF_ACT_FAIL_IF_NEW |