pcap_fileno(3) - NetBSD Manual Pages

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PCAP_FILENO(3)                                                  PCAP_FILENO(3)




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(3) and  pcap_activate(3),  or  using
       pcap_open_live(3), 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(3) or pcap_fopen_offline(3), a ``dead'' pcap_t opened
       using pcap_open_dead(3), or a pcap_t that was  created  with  pcap_cre-
       ate()  but  that  has  not  yet been activated with pcap_activate(), it
       returns PCAP_ERROR.


SEE ALSO

       pcap(3)



                                 25 July 2018                   PCAP_FILENO(3)