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LEARN ABOUT OSX

pcap_activate

PCAP_ACTIVATE(3PCAP)													      PCAP_ACTIVATE(3PCAP)

NAME

       pcap_activate - activate a capture handle

SYNOPSIS

       #include <pcap/pcap.h>

       int pcap_activate(pcap_t *p);

DESCRIPTION

       pcap_activate() is used to activate a packet capture handle to look at packets on the network, with the options that were set on the handle
       being in effect.

RETURN VALUE

       pcap_activate() returns 0 on success without warnings, PCAP_WARNING_PROMISC_NOTSUP on success on a device that doesn't support  promiscuous
       mode  if  promiscuous  mode  was  requested,  PCAP_WARNING_TSTAMP_TYPE_NOTSUP  on  success  if  the time stamp type specified in a previous
       pcap_set_tstamp_type() call isn't supported by the capture source (the time stamp type is left as the  default),  PCAP_WARNING  on  success
       with  any  other  warning,  PCAP_ERROR_ACTIVATED  if the handle has already been activated, PCAP_ERROR_NO_SUCH_DEVICE if the capture source
       specified when the handle was created doesn't exist, PCAP_ERROR_PERM_DENIED if the process doesn't have	permission  to	open  the  capture
       source,	PCAP_ERROR_PROMISC_PERM_DENIED if the process has permission to open the capture source but doesn't have permission to put it into
       promiscuous  mode,  PCAP_ERROR_RFMON_NOTSUP  if	monitor  mode  was  specified  but  the  capture  source  doesn't  support  monitor  mode,
       PCAP_ERROR_IFACE_NOT_UP	if  the  capture  source  is  not  up, and PCAP_ERROR if another error occurred.  If PCAP_WARNING or PCAP_ERROR is
       returned, pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display a message describing the warning or error.
       If  PCAP_WARNING_PROMISC_NOTSUP,  PCAP_ERROR_NO_SUCH_DEVICE,  or  PCAP_ERROR_PERM_DENIED is returned, pcap_geterr() or pcap_perror() may be
       called with p as an argument to fetch or display an message giving additional details about the problem that might be useful for  debugging
       the problem if it's unexpected.

SEE ALSO

       pcap(3PCAP)

								   5 April 2008 					      PCAP_ACTIVATE(3PCAP)

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