if s3Err != ErrNone {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL)
		return
	}

	users := r.Form["users"]
	isAll := r.Form.Get("all") == "true"
	selfOnly := !isAll && len(users) == 0

	if isAll && len(users) > 0 {
		// This should be checked on client side, so return generic error
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
		return