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 cap-
ture 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 er-
ror 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(3PCAP) or
pcap_perror(3PCAP) 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 re-
turn codes as errors. pcap_statustostr(3PCAP) 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_rf-
mon(3PCAP)
31 July 2016 PCAP_CAN_SET_RFMON(3PCAP)
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