PCAP_ACTIVATE(3)					     Library Functions Manual						  PCAP_ACTIVATE(3)

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 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_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 prob-
       lem that might be useful for debugging the problem if it's unexpected.

SEE ALSO

       pcap(3)

								   5 April 2008 						  PCAP_ACTIVATE(3)