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PCAP_LIST_DATALINKS(3)     Library Functions Manual     PCAP_LIST_DATALINKS(3)



NAME
       pcap_list_datalinks - get a list of link-layer header types supported
       by a capture device

SYNOPSIS
       #include <&lt;pcap/pcap.h>&gt;

       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
       display the error text.

SEE ALSO
       pcap(3), pcap_geterr(3), pcap_free_datalinks(3), pcap-linktype(7)



                                 5 April 2008           PCAP_LIST_DATALINKS(3)