var err error
			_, p, err = globalIAMSys.GetRolePolicy(roleArnStr)
			if err != nil {
				writeSTSErrorResponse(ctx, w, ErrSTSAccessDenied, err)
				return
			}
		}

		if !globalIAMSys.doesPolicyAllow(p, policy.Args{
			DenyOnly:        true,
			Action:          policy.AssumeRoleWithWebIdentityAction,
			ConditionValues: getSTSConditionValues(r, "", cred),
			Claims:          cred.Claims,
		}) {

	_, policy := sys.store.MergePolicies(strings.Join(policies, ","))
	return policy
}

// doesPolicyAllow - checks if the given policy allows the passed action with given args. This is rarely needed.
// Notice there is no account name involved, so this is a dangerous function.
func (sys *IAMSys) doesPolicyAllow(policy string, args policy.Args) bool {
	// Policies were found, evaluate all of them.