PCAP_CAN_SET_RFMON(3PCAP) PCAP_CAN_SET_RFMON(3PCAP)
NAME
pcap_can_set_rfmon - check whether monitor mode can be set for a not-yet-activated capture handle
SYNOPSIS
#include <pcap/pcap.h>
int pcap_can_set_rfmon(pcap_t *p);
DESCRIPTION
pcap_can_set_rfmon() checks whether monitor mode could be set on a capture handle when the handle is activated.
RETURN VALUE
pcap_can_set_rfmon() returns 0 if monitor mode could not be set, 1 if monitor mode could be set, and a negative value on error. A negative
return value indicates what error condition occurred. The possible error values are:
PCAP_ERROR_NO_SUCH_DEVICE
The capture source specified when the handle was created doesn't exist.
PCAP_ERROR_PERM_DENIED
The process doesn't have permission to check whether monitor mode could be supported.
PCAP_ERROR_ACTIVATED
The capture handle has already been activated.
PCAP_ERROR
Another error occurred. pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display a message describing
the error.
Additional error codes may be added in the future; a program should check for 0, 1, and negative, return codes, and treat all negative
return codes as errors. pcap_statustostr() can be called, with a warning or error code as an argument, to fetch a message describing the
warning or error code.
SEE ALSO
pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), pcap_set_rfmon(3PCAP)
3 January 2014 PCAP_CAN_SET_RFMON(3PCAP)