pcap_list_datalinks - layer header types supported by a capture device, and free that list
#include <pcap/pcap.h> int pcap_list_datalinks(pcap_t *p, int **dlt_buf); void pcap_free_datalinks(int *dlt_list);
PCAP_LIST_DATALINKS(3pcap)
NAME
pcap_list_datalinks, pcap_free_datalinks - get a list of link-layer
header types supported by a capture device, and free that list
SYNOPSIS
#include <pcap/pcap.h>
int pcap_list_datalinks(pcap_t *p, int **dlt_buf);
void pcap_free_datalinks(int *dlt_list);
DESCRIPTION
pcap_list_datalinks() is used to get a list of the supported link-layer
header types of the interface associated with the pcap descriptor.
pcap_list_datalinks() allocates an array to hold the list and sets
*dlt_buf to point to that array.
The caller is responsible for freeing the array with
pcap_free_datalinks(), which frees the list of link-layer header types
pointed to by dlt_list.
It must not be called on a pcap descriptor created by
pcap_create(3PCAP) that has not yet been activated by
pcap_activate(3PCAP).
RETURN VALUE
pcap_list_datalinks() returns the number of link-layer header types in
the array on success, PCAP_ERROR_NOT_ACTIVATED if called on a capture
handle that has been created but not activated, and PCAP_ERROR on other
errors. If PCAP_ERROR is returned, pcap_geterr(3PCAP) or
pcap_perror(3PCAP) may be called with p as an argument to fetch or dis-
play the error text.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------------+
|Availability | system/library/libpcap |
+---------------+------------------------+
|Stability | Uncommitted |
+---------------+------------------------+
SEE ALSO
pcap(3PCAP), pcap_datalink_val_to_name(3PCAP), pcap-linktype(7)
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://www.tcpdump.org/release/libp-
cap-1.9.1.tar.gz.
Further information about this software can be found on the open source
community website at https://www.tcpdump.org/.
25 July 2018