PCAP_OPEN_DEAD(3PCAP)PCAP_OPEN_DEAD(3PCAP)NAME
pcap_open_dead - open a fake pcap_t for compiling filters or opening a capture for output
SYNOPSIS
#include <pcap/pcap.h>
pcap_t *pcap_open_dead(int linktype, int snaplen);
DESCRIPTION
pcap_open_dead() is used for creating a pcap_t structure to use when calling the other functions in libpcap. It is typically used when
just using libpcap for compiling BPF code.
linktype specifies the link-layer type for the pcap_t.
snaplen specifies the snapshot length for the pcap_t.
SEE ALSO pcap(3PCAP), pcap-linktype(7)
5 April 2008 PCAP_OPEN_DEAD(3PCAP)
Check Out this Related Man Page
PCAP_FILENO(3PCAP)PCAP_FILENO(3PCAP)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() 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 pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), pcap_open_live(3PCAP), pcap_open_offline(3PCAP), pcap_fopen_offline(3PCAP),
pcap_open_dead(3PCAP)
5 April 2008 PCAP_FILENO(3PCAP)
Introduction
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