I would appreciate any donations. Wishlist or send e-mail type donations to maekawa AT daemon-systems.org.

Thank you.


PCAP_LIST_DATALINKS(3)     Library Functions Manual     PCAP_LIST_DATALINKS(3)



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()
       that has not yet been activated by pcap_activate().

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 (-1) on
       other errors.  If PCAP_ERROR 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_datalink_val_to_name(3), pcap-linktype(7)



                                22 August 2010          PCAP_LIST_DATALINKS(3)