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pcap_list_datalinks(3pcap)

PCAP_LIST_DATALINKS(3pcap)                          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:

       box; cbp-1 | cbp-1 l | l .  ATTRIBUTE TYPE ATTRIBUTE VALUE = Availabil‐
       ity   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/libpcap-1.10.4.tar.gz

       Further information about this software can be found on the open source
       community website at https://www.tcpdump.org/.

                                 25 July 2018       PCAP_LIST_DATALINKS(3pcap)
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