| JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 1 | .\" @(#) $Header: /tcpdump/master/libpcap/pcap_fileno.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ |
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| 22 | .TH PCAP_FILENO 3PCAP "5 April 2008" |
| 23 | .SH NAME |
| 24 | pcap_fileno \- get the file descriptor for a live capture |
| 25 | .SH SYNOPSIS |
| 26 | .nf |
| 27 | .ft B |
| 28 | #include <pcap/pcap.h> |
| 29 | .ft |
| 30 | .LP |
| 31 | .ft B |
| 32 | int pcap_fileno(pcap_t *p); |
| 33 | .ft |
| 34 | .fi |
| 35 | .SH DESCRIPTION |
| 36 | If |
| 37 | .I p |
| 38 | refers to a network device that was opened for a live capture using |
| 39 | a combination of |
| 40 | .B pcap_create() |
| 41 | and |
| 42 | .BR pcap_activate() , |
| 43 | or using |
| 44 | .BR pcap_open_live() , |
| 45 | .B pcap_fileno() |
| 46 | returns the file descriptor from which captured packets are read. |
| 47 | .LP |
| 48 | If |
| 49 | .I p |
| 50 | refers to a ``savefile'' that was opened using functions such as |
| 51 | .BR pcap_open_offline() |
| 52 | or |
| 53 | .BR pcap_fopen_offline() , |
| 54 | a ``dead'' |
| 55 | .B pcap_t |
| 56 | opened using |
| 57 | .BR pcap_open_dead() , |
| 58 | or a |
| 59 | .B pcap_t |
| 60 | that was created with |
| 61 | .B pcap_create() |
| 62 | but that has not yet been activated with |
| 63 | .BR pcap_activate() , |
| 64 | it returns \-1. |
| 65 | .SH SEE ALSO |
| 66 | pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), |
| 67 | pcap_open_live(3PCAP), pcap_open_offline(3PCAP), |
| 68 | pcap_fopen_offline(3PCAP), pcap_open_dead(3PCAP) |