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   pcap_free_datalinks.3pcap    ( 3 )

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Имя (Name)

pcap_list_datalinks, pcap_free_datalinks - get a list of link-
       layer header types supported by a capture device, and free that
       list

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Синопсис (Synopsis)

#include <pcap/pcap.h>

       int pcap_list_datalinks(pcap_t *p, int **dlt_buf);
       void pcap_free_datalinks(int *dlt_list);

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Описание (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).

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Возвращаемое значение (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 display the error text.

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Смотри также (See also)

pcap(3PCAP), pcap_datalink_val_to_name(3PCAP), pcap-linktype(7)

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