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PCAP_FILENO(3) Library Functions Manual 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() 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(3), pcap_create(3), pcap_activate(3), pcap_open_live(3), pcap_open_offline(3), pcap_fopen_offline(3), pcap_open_dead(3) 5 April 2008 PCAP_FILENO(3)