PCAP_FILENO(3PCAP)                                        PCAP_FILENO(3PCAP)

NAME         top

       pcap_fileno - get the file descriptor for a live capture

SYNOPSIS         top

       #include <pcap/pcap.h>

       int pcap_fileno(pcap_t *p);

DESCRIPTION         top

       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         top

       pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP),
       pcap_open_live(3PCAP), pcap_open_offline(3PCAP),
       pcap_fopen_offline(3PCAP), pcap_open_dead(3PCAP)

COLOPHON         top

       This page is part of the libpcap (packet capture library) project.
       Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, see ⟨⟩.  This page was obtained
       from the project's upstream Git repository
       ⟨⟩ on 2018-02-02.
       (At that time, the date of the most recent commit that was found in
       the repository was 2018-01-31.)  If you discover any rendering prob‐
       lems in this HTML version of the page, or you believe there is a bet‐
       ter or more up-to-date source for the page, or you have corrections
       or improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to

                                7 April 2014              PCAP_FILENO(3PCAP)