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(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.

SEE ALSO

pcap(3PCAP)

25 July 2018 PCAP_FILENO(3PCAP)