Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
Hi,,
I am new to pcap programming..I just tried with some simple examples available and I got segmentation fault..The code which I am doing is attested..
printf("val=%d is returned from pcap_next_ex\n",val);
printf("Grabbed packet of length %d\n",hdr.len);
printf("Recieved at ..... %s\n",ctime((const time_t*)&hdr.ts.tv_sec));
printf("Ethernet address length is %d\n",ETHER_HDR_LEN);
eptr = (struct ether_header *) packet;
if (ntohs (eptr->ether_type) == ETHERTYPE_IP)
{
printf("Ethernet type hex:%x dec:%d is an IP packet\n",
ntohs(eptr->ether_type),
ntohs(eptr->ether_type));
}else if (ntohs (eptr->ether_type) == ETHERTYPE_ARP)
{
printf("Ethernet type hex:%x dec:%d is an ARP packet\n",
ntohs(eptr->ether_type),
ntohs(eptr->ether_type));
}else {
printf("Ethernet type %x not IP", ntohs(eptr->ether_type));
exit(1);
}
Hi,,
I am new to pcap programming..I just tried with some simple examples available and I got segmentation fault..The code which I am doing is attested..
//Code goes here....
Please do reply soon....Thank in advance...
Reply to WHAT, HOW??? That's not the complete source code for your program, and you say nothing about the version/distro of Linux, PCAP, what the EXACT error is, or what you're trying to do. We can't tell you anything without some useful details.
Short answer? You've got a problem in your code. Since you don't post it, or even give us a hint as to what the error is, we can't tell you more.
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.