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PCAP_FILENO(3) FreeBSD 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(3) and pcap_activate(3), or using
pcap_open_live(3), 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(3) or pcap_fopen_offline(3), a ``dead'' pcap_t opened
using pcap_open_dead(3), or a pcap_t that was created with
pcap_create() but that has not yet been activated with pcap_activate(),
it returns PCAP_ERROR.
SEE ALSO
pcap(3)
25 July 2018 PCAP_FILENO(3)