IsOwner:         false,
	})

	// Check if anonymous (non-owner) has access to upload objects.
	writable := globalPolicySys.IsAllowed(policy.BucketPolicyArgs{
		Action:          policy.PutObjectAction,
		BucketName:      bucket,
		ConditionValues: getConditionValues(r, "", auth.AnonymousCredentials),
		IsOwner:         false,
	})

	if !globalIAMSys.IsAllowed(policy.Args{
		AccountName:     cred.AccessKey,
		Groups:          cred.Groups,
		Action:          policy.GetUserAdminAction,
		ConditionValues: getConditionValues(r, "", cred),
		IsOwner:         owner,
		Claims:          cred.Claims,
		DenyOnly:        checkDenyOnly,
	}) {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAccessDenied), r.URL)
		return
	}

		hasSessionPolicy = false
		return
	}

	// As the session policy exists, even if the parent is the root account, it
	// must be restricted by it. So, we set `.IsOwner` to false here
	// unconditionally.
	sessionPolicyArgs := args
	sessionPolicyArgs.IsOwner = false

	// Sub policy is set and valid.
	return hasSessionPolicy, subPolicy.IsAllowed(sessionPolicyArgs)
}