Esempio n. 1
0
static int
nl_getlist(int sd, int seq,
	   int request,
	   struct nlmsg_list **nlm_list,
	   struct nlmsg_list **nlm_end)
{
  struct nlmsghdr *nlh = NULL;
  int status;
  int done = 0;
  int tries = 3;

 try_again:
  status = nl_sendreq(sd, request, NLM_F_ROOT|NLM_F_MATCH, &seq);
  if (status < 0)
    return status;
  if (seq == 0)
    seq = (int)time(NULL);
  while(!done){
    struct pollfd pfd;

    pfd.fd = sd;
    pfd.events = POLLIN | POLLPRI;
    pfd.revents = 0;
    status = poll(&pfd, 1, 1000);
    if (status < 0)
	return status;
    else if (status == 0) {
	seq++;
	if (tries-- > 0)
	    goto try_again;
	return -1;
    }

    status = nl_getmsg(sd, request, seq, &nlh, &done);
    if (status < 0)
      return status;
    if (nlh){
      struct nlmsg_list *nlm_next = (struct nlmsg_list *)malloc(sizeof(struct nlmsg_list));
      if (nlm_next == NULL){
	int saved_errno = errno;
	free(nlh);
	__set_errno(saved_errno);
	status = -1;
      } else {
	nlm_next->nlm_next = NULL;
	nlm_next->nlh = (struct nlmsghdr *)nlh;
	nlm_next->size = status;
	nlm_next->seq = seq;
	if (*nlm_list == NULL){
	  *nlm_list = nlm_next;
	  *nlm_end = nlm_next;
	} else {
	  (*nlm_end)->nlm_next = nlm_next;
	  *nlm_end = nlm_next;
	}
      }
    }
  }
  return status >= 0 ? seq : status;
}
Esempio n. 2
0
static int
nl_getlist (int sd, int seq, pid_t pid,
	    int request,
	    struct nlmsg_list **nlm_list, struct nlmsg_list **nlm_end)
{
  struct nlmsghdr *nlh = NULL;
  int status;
  int done = 0;

  status = nl_sendreq (sd, request, NLM_F_ROOT | NLM_F_MATCH, &seq);
  if (status < 0)
    return status;
  if (seq == 0)
    seq = (int) time (NULL);
  while (!done)
    {
      status = nl_getmsg (sd, request, seq, pid, &nlh, &done);
      if (status < 0)
	return status;
      if (nlh)
	{
	  struct nlmsg_list *nlm_next =
	    (struct nlmsg_list *) malloc (sizeof (struct nlmsg_list));
	  if (nlm_next == NULL)
	    {
	      int saved_errno = errno;
	      free (nlh);
	      __set_errno (saved_errno);
	      status = -1;
	    }
	  else
	    {
	      nlm_next->nlm_next = NULL;
	      nlm_next->nlh = (struct nlmsghdr *) nlh;
	      nlm_next->size = status;
	      nlm_next->seq = seq;
	      if (*nlm_list == NULL)
		{
		  *nlm_list = nlm_next;
		  *nlm_end = nlm_next;
		}
	      else
		{
		  (*nlm_end)->nlm_next = nlm_next;
		  *nlm_end = nlm_next;
		}
	    }
	}
    }
  return status >= 0 ? seq : status;
}