mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-02 19:22:47 +00:00
65 lines
2.4 KiB
Plaintext
65 lines
2.4 KiB
Plaintext
.\" @(#) $Header: /tcpdump/master/libpcap/pcap_list_datalinks.3pcap.in,v 1.1 2008-10-21 07:33:02 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_LIST_DATALINKS 3PCAP "22 August 2010"
|
|
.SH NAME
|
|
pcap_list_datalinks, pcap_free_datalinks \- get a list of link-layer header
|
|
types supported by a capture device, and free that list
|
|
.SH SYNOPSIS
|
|
.nf
|
|
.ft B
|
|
#include <pcap/pcap.h>
|
|
.ft
|
|
.LP
|
|
.ft B
|
|
int pcap_list_datalinks(pcap_t *p, int **dlt_buf);
|
|
void pcap_free_datalinks(int *dlt_list);
|
|
.ft
|
|
.fi
|
|
.SH DESCRIPTION
|
|
.B pcap_list_datalinks()
|
|
is used to get a list of the supported link-layer header types of the
|
|
interface associated with the pcap descriptor.
|
|
.B pcap_list_datalinks()
|
|
allocates an array to hold the list and sets
|
|
.IR *dlt_buf
|
|
to point to that array.
|
|
.LP
|
|
The caller is responsible for freeing the array with
|
|
.BR pcap_free_datalinks() ,
|
|
which frees the list of link-layer header types pointed to by
|
|
.IR dlt_list .
|
|
.SH RETURN VALUE
|
|
.B pcap_list_datalinks()
|
|
returns the number of link-layer header types in the array on success
|
|
and \-1 on failure.
|
|
If \-1 is returned,
|
|
.B pcap_geterr()
|
|
or
|
|
.B pcap_perror()
|
|
may be called with
|
|
.I p
|
|
as an argument to fetch or display the error text.
|
|
.SH SEE ALSO
|
|
pcap(3PCAP), pcap_geterr(3PCAP),
|
|
pcap_datalink_val_to_name(3PCAP),
|
|
pcap-linktype(7)
|