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TH PCAP_FILENO 3PCAP "25 July 2018"
SH NAME
pcap_fileno \- get the file descriptor for a live capture
SH SYNOPSIS
nf
ft B
#include <pcap/pcap.h>
ft
LP
ft B
int pcap_fileno(pcap_t *p);
ft
fi
SH DESCRIPTION
If
I p
refers to a network device that was opened for a live capture using
a combination of
BR pcap_create (3PCAP)
and
BR pcap_activate (3PCAP),
or using
BR pcap_open_live (3PCAP),
BR pcap_fileno ()
returns the file descriptor from which captured packets are read.
LP
If
I p
refers to a ``savefile'' that was opened using functions such as
BR pcap_open_offline (3PCAP)
or
BR pcap_fopen_offline (3PCAP),
a ``dead''
B pcap_t
opened using
BR pcap_open_dead (3PCAP),
or a
B pcap_t
that was created with
BR pcap_create ()
but that has not yet been activated with
BR pcap_activate (),
it returns
BR PCAP_ERROR .
SH SEE ALSO
BR pcap (3PCAP)