bionic (3) pcap_can_set_rfmon.3pcap.gz

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)