PCAP_FILENO(3) |
Library Functions Manual |
PCAP_FILENO(3) |
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(3), pcap_create(3), pcap_activate(3), pcap_open_live(3), pcap_open_offline(3), pcap_fopen_offline(3), pcap_open_dead(3)