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PCAP_CAN_SET_RFMON

Section: Misc. Reference Manual Pages (3PCAP)
Updated: 3 January 2014
Index Return to Main Contents
 

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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
SEE ALSO


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