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)