Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

pcap_file(3pcap) [v7 man page]

PCAP_FILE(3PCAP)														  PCAP_FILE(3PCAP)

NAME
pcap_file - get the standard I/O stream for a savefile being read SYNOPSIS
#include <pcap/pcap.h> FILE *pcap_file(pcap_t *p); DESCRIPTION
pcap_file() returns the standard I/O stream of the ``savefile,'' if a ``savefile'' was opened with pcap_open_offline(), or NULL, if a net- work device was opened with pcap_create() and pcap_activate(), or with pcap_open_live(). Note that the Packet Capture library is usually built with large file support, so the standard I/O stream of the ``savefile'' might refer to a file larger than 2 gigabytes; applications that use pcap_file() should, if possible, use calls that support large files on the return value of pcap_file() or the value returned by fileno() when passed the return value of pcap_file(). SEE ALSO
pcap(3PCAP), pcap_open_offline(3PCAP) 5 April 2008 PCAP_FILE(3PCAP)

Check Out this Related Man Page

PCAP_FILENO(3PCAP)														PCAP_FILENO(3PCAP)

NAME
pcap_fileno - get the file descriptor for a live capture SYNOPSIS
#include <pcap/pcap.h> int pcap_fileno(pcap_t *p); DESCRIPTION
If p refers to a network device that was opened for a live capture using a combination of pcap_create() and pcap_activate(), or using pcap_open_live(), pcap_fileno() returns the file descriptor from which captured packets are read. If p refers to a ``savefile'' that was opened using functions such as pcap_open_offline() or pcap_fopen_offline(), a ``dead'' pcap_t opened using pcap_open_dead(), or a pcap_t that was created with pcap_create() but that has not yet been activated with pcap_activate(), it returns -1. SEE ALSO
pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), pcap_open_live(3PCAP), pcap_open_offline(3PCAP), pcap_fopen_offline(3PCAP), pcap_open_dead(3PCAP) 7 April 2014 PCAP_FILENO(3PCAP)
Man Page

5 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Filtering pcap files

Hi, I am new at UNIX and programing in general and only have a basic knowledge of C++. I am helping out with some research at a college and was given the task to sort through captured packets via IP addresses. I was wondering if anyone could help me with writing a code which filters through pcap... (1 Reply)
Discussion started by: hershey101
1 Replies

2. Programming

searching through pcap files

Hi, I am new at UNIX and programing in general and only have a basic knowledge of C++. I am helping out with some research at a college and was given the task to sort through captured packets via IP addresses. I was wondering if anyone could help me with writing a code which filters through pcap... (4 Replies)
Discussion started by: hershey101
4 Replies

3. Programming

Process multiple pcap files at once

Hi all, I'm writing a program using libpcap, and I have multiple pcap files in a folder that I want to capture. I currently have handle = pcap_open_offline("/data/traffic/pcap1.pcap", errbuf"); which works fine since pcap_open_offline() takes in a filename. However, I want to process... (0 Replies)
Discussion started by: lancer6238
0 Replies

4. Programming

printing out information from pcap file

Hi Folks, i got the following Problem: I want to make an analysis on a pcap file. (diestance between different packets and so on) The difficulty now... it's not a simple Ethernet/ IP/ File, but it's a SS7 file. There are the Layers MTP2 MTP3 and ISUP. My analysis depends on the ISUP Layer. Now... (0 Replies)
Discussion started by: thisismyname
0 Replies

5. Shell Programming and Scripting

Sampling pcap file

Hi, I have a standard pcap file created using tcpdump. The file looks like 06:49:36.487629 IP 202.1.175.252 > 71.126.222.64: ICMP echo request, id 52765, seq 1280, length 40 06:49:36.489552 IP 192.120.148.227 > 71.126.222.64: ICMP echo request, id 512, seq 1280, length 40 06:49:36.491812 IP... (8 Replies)
Discussion started by: sajal.bhatia
8 Replies