Manpage of PCAP_FILENO

Section: Misc. Reference Manual Pages (3PCAP)
Updated: 25 July 2018
Return to Main Contents


pcap_fileno - get the file descriptor for a live capture  


#include <pcap/pcap.h>

int pcap_fileno(pcap_t *p);


If p refers to a network device that was opened for a live capture using a combination of pcap_create(3PCAP) and pcap_activate(3PCAP), or using pcap_open_live(3PCAP), 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(3PCAP) or pcap_fopen_offline(3PCAP), a ``dead'' pcap_t opened using pcap_open_dead(3PCAP), or a pcap_t that was created with pcap_create() but that has not yet been activated with pcap_activate(), it returns PCAP_ERROR.  



This document was created by man2html, using the manual pages from "The Tcpdump Group" git repositories.
Time: 23:39:58 GMT, January 10, 2020