1PCAP_LIST_DATALINKS(3PCAP)                          PCAP_LIST_DATALINKS(3PCAP)
2
3
4

NAME

6       pcap_list_datalinks  -  get a list of link-layer header types supported
7       by a capture device
8

SYNOPSIS

10       #include <pcap/pcap.h>
11
12       int pcap_list_datalinks(pcap_t *p, int **dlt_buf);
13

DESCRIPTION

15       pcap_list_datalinks() is used to get a list of the supported data  link
16       types   of   the   interface   associated  with  the  pcap  descriptor.
17       pcap_list_datalinks() allocates an array to  hold  the  list  and  sets
18       *dlt_buf.   The  caller  is  responsible  for  freeing  the  array with
19       pcap_free_datalinks(3PCAP).
20

RETURN VALUE

22       pcap_list_datalinks() returns the number of  data  link  types  in  the
23       array  on  success and -1 on failure.  If -1 is returned, pcap_geterr()
24       or pcap_perror() may be called with p as an argument to fetch  or  dis‐
25       play the error text.
26

SEE ALSO

28       pcap(3PCAP), pcap_geterr(3PCAP), pcap_free_datalinks(3PCAP), pcap-link‐
29       type(7)
30
31
32
33                                 5 April 2008       PCAP_LIST_DATALINKS(3PCAP)