pcap_create(3) - NetBSD Manual Pages

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PCAP_CREATE(3)                                                  PCAP_CREATE(3)




NAME

       pcap_create - create a live capture handle


SYNOPSIS

       #include <pcap/pcap.h>

       char errbuf[PCAP_ERRBUF_SIZE];

       pcap_t *pcap_create(const char *source, char *errbuf);


DESCRIPTION

       pcap_create()  is  used  to  create  a packet capture handle to look at
       packets on the network.  source is a string that specifies the  network
       device  to  open;  on Linux systems with 2.2 or later kernels, a source
       argument of "any" or NULL can be  used  to  capture  packets  from  all
       interfaces.

       The returned handle must be activated with pcap_activate() before pack-
       ets can be captured with it; options for the capture, such as promiscu-
       ous mode, can be set on the handle before activating it.


RETURN VALUE

       pcap_create()  returns  a  pcap_t * on success and NULL on failure.  If
       NULL is returned, errbuf is filled in with an  appropriate  error  mes-
       sage.   errbuf  is assumed to be able to hold at least PCAP_ERRBUF_SIZE
       chars.


SEE ALSO

       pcap(3), pcap_activate(3)



                                3 January 2014                  PCAP_CREATE(3)