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 2023-12-22.
       (At that time, the date of the most recent commit that was found
       in the repository was 2023-12-13.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better 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

                              25 July 2018            PCAP_FILENO(3PCAP)