rem: return B_ERROR;
add: status = sigpending(&set); if (status == B_OK && user_memcpy(userSet, &set, sizeof(sigset_t)) < B_OK) return B_BAD_ADDRESS;  return status;
context: _user_sigpending(sigset_t *set){	if (set == NULL)		return B_BAD_VALUE;	// ToDo: implement	return B_ERROR;}