pcap_fileno(3pcap) — Linux manual page


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(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         top


COLOPHON         top

       This page is part of the libpcap (packet capture library) project.
       Information about the project can be found at 
       ⟨http://www.tcpdump.org/⟩.  If you have a bug report for this manual
       page, see ⟨http://www.tcpdump.org/#patches⟩.  This page was obtained
       from the project's upstream Git repository
       ⟨https://github.com/the-tcpdump-group/libpcap.git⟩ on 2020-09-18.
       (At that time, the date of the most recent commit that was found in
       the repository was 2020-09-15.)  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 man-pages@man7.org

                                25 July 2018              PCAP_FILENO(3PCAP)