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| .TH PCAP_FILENO 3PCAP "5 April 2008" |
| .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 |
| .B pcap_create() |
| and |
| .BR pcap_activate() , |
| or using |
| .BR pcap_open_live() , |
| .B 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() |
| or |
| .BR pcap_fopen_offline() , |
| a ``dead'' |
| .B pcap_t |
| opened using |
| .BR pcap_open_dead() , |
| or a |
| .B pcap_t |
| that was created with |
| .B pcap_create() |
| but that has not yet been activated with |
| .BR pcap_activate() , |
| it returns \-1. |
| .SH 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) |
