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22 .TH PCAP_LIST_DATALINKS 3PCAP "22 August 2010"
24 pcap_list_datalinks, pcap_free_datalinks \- get a list of link-layer header
25 types supported by a capture device, and free that list
29 #include <pcap/pcap.h>
33 int pcap_list_datalinks(pcap_t *p, int **dlt_buf);
34 void pcap_free_datalinks(int *dlt_list);
38 .B pcap_list_datalinks()
39 is used to get a list of the supported link-layer header types of the
40 interface associated with the pcap descriptor.
41 .B pcap_list_datalinks()
42 allocates an array to hold the list and sets
44 to point to that array.
46 The caller is responsible for freeing the array with
47 .BR pcap_free_datalinks() ,
48 which frees the list of link-layer header types pointed to by
51 .B pcap_list_datalinks()
52 returns the number of link-layer header types in the array on success
60 as an argument to fetch or display the error text.
62 pcap(3PCAP), pcap_geterr(3PCAP),
63 pcap_datalink_val_to_name(3PCAP),
64 pcap-linktype(@MAN_MISC_INFO@)