2 thoughts on “About me / Contact”

1. Hi Jonh
   quick question, where to see the hardware errors in Susi Linux OS. Particularly HDD errors.
   Thanks in advance
   Balaji

   Reply

2. Hi Jonh, I was reading your iptc post and was wondering if you could help, as i’m totally stuck.
   i’m trying to emulate :: iptables -A INPUT -t filter -p tcp -j NFQUEUE –queue-num $queueNum

   where $queueNum is any int

   so far I have

   static int createFilters(int baseNumber) {

   /*
   * input filter looks like this
   * iptables -A INPUT -p tcp -j NFQUEUE –queue-num 0
   * sudo iptables -L INPUT
   * Chain INPUT (policy ACCEPT)
   * target prot opt source destination
   * NFQUEUE tcp — anywhere anywhere NFQUEUE num 5
   */
   const char *table = “filter”;
   const char *chain = “INPUT”;
   const char *target = “QUEUE”;
   struct
   {
   struct ipt_entry entry;
   struct xt_NFQ_info {
   u_int16_t queueNum;
   } target;
   } entry;
   struct xtc_handle *h;
   int ret = 1;

   h = iptc_init (table);
   if (!h) {
   fprintf (stderr, “Could not init IPTC library: %s\n”, iptc_strerror (errno));
   goto out;
   }

   memset (&entry, 0, sizeof (entry));
   /* target */
   entry.target.queueNum = XT_ALIGN (baseNumber);
   entry.entry.target_offset = sizeof (struct ipt_entry);
   entry.entry.next_offset = entry.entry.target_offset + sizeof(entry.target);

   if (!iptc_append_entry (chain, (struct ipt_entry *) &entry, h)) {
   fprintf (stderr, “Could not insert a rule in iptables (table %s): %s\n”, table, iptc_strerror (errno));
   goto out;
   }

   if (!iptc_commit (h)) {
   fprintf (stderr, “Could not commit changes in iptables (table %s): %s\n”, table, iptc_strerror (errno));
   goto out;
   }

   ret = 0;

   out:
   if (h)
   iptc_free (h);

   return ret;
   }

   but it won’t commit. Any thoughts?

   Thanks,
   Mat

   Reply