PCAP_FILENO
Section: Misc. Reference Manual Pages (3PCAP)
Updated: 7 April 2014
Page Index
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)