pcap_list_datalinks man page on PC-BSD
[printable version]
PCAP_LIST_DATALINKS(3) PCAP_LIST_DATALINKS(3)
NAME
pcap_list_datalinks - get a list of link-layer header types supported
by a capture device
SYNOPSIS
#include <pcap/pcap.h>
int pcap_list_datalinks(pcap_t *p, int **dlt_buf);
DESCRIPTION
pcap_list_datalinks() is used to get a list of the supported data link
types of the interface associated with the pcap descriptor.
pcap_list_datalinks() allocates an array to hold the list and sets
*dlt_buf. The caller is responsible for freeing the array with
pcap_free_datalinks(3).
RETURN VALUE
pcap_list_datalinks() returns the number of data link types in the
array on success and -1 on failure. If -1 is returned, pcap_geterr()
or pcap_perror() may be called with p as an argument to fetch or dis‐
play the error text.
SEE ALSO
pcap(3), pcap_geterr(3), pcap_free_datalinks(3), pcap-linktype(7)
5 April 2008 PCAP_LIST_DATALINKS(3)
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