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;
}
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;
}