diff options
author | guy <guy> | 2008-04-06 02:53:21 +0000 |
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committer | guy <guy> | 2008-04-06 02:53:21 +0000 |
commit | f84d077e075d7e976be9d2334bf0f68e83cb95a5 (patch) | |
tree | e797f3fa543b282be3ce1b7c598c4df1905cecc4 /pcap_create.3pcap | |
parent | 37340171346a8f9cf4cbec922b27683f282a9e26 (diff) | |
download | libpcap-f84d077e075d7e976be9d2334bf0f68e83cb95a5.tar.gz |
Document the new API's, move a bunch of information about libpcap
concepts to the pcap(3PCAP) man page, refer people to the pcap(3PCAP)
man page from the man pages for libpcap functions, and clean up some
errors.
Diffstat (limited to 'pcap_create.3pcap')
-rw-r--r-- | pcap_create.3pcap | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/pcap_create.3pcap b/pcap_create.3pcap new file mode 100644 index 00000000..153f9fd6 --- /dev/null +++ b/pcap_create.3pcap @@ -0,0 +1,74 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_create.3pcap,v 1.1 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_CREATE 3PCAP "5 April 2008" +.SH NAME +pcap_create \- create a live capture handle +.SH SYNOPSIS +.nf +.ft B +#include <pcap/pcap.h> +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +pcap_t *pcap_create(const char *source, char *errbuf); +.ft +.fi +.SH DESCRIPTION +.B pcap_create() +is used to create a packet capture handle to look +at packets on the network. +.I source +is a string that specifies the network device to open; on Linux systems +with 2.2 or later kernels, a +.I source +argument of "any" or +.B NULL +can be used to capture packets from all interfaces. +.PP +The returned handle must be activated with +.B pcap_activate() +before packets can be captured +with it; options for the capture, such as promiscuous mode, can be set +on the handle before activating it. +.SH RETURN VALUE +.B pcap_create() +returns a +.I pcap_t * +on success and +.B NULL +on failure. +If +.B NULL +is returned, +.I errbuf +is filled in with an appropriate error message. +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP), pcap_activate(3PCAP) |