pcap_can_set_rfmon(3pcap) — Linux manual page



NAME         top

       pcap_can_set_rfmon - check whether monitor mode can be set for a
       not-yet-activated capture handle

SYNOPSIS         top

       #include <pcap/pcap.h>

       int pcap_can_set_rfmon(pcap_t *p);

DESCRIPTION         top

       pcap_can_set_rfmon() checks whether monitor mode could be set on
       a capture handle when the handle is activated.

RETURN VALUE         top

       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:

              The capture source specified when the handle was created
              doesn't exist.

              The process doesn't have permission to check whether
              monitor mode could be supported.

              The capture handle has already been activated.

              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 return 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         top

       pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP),

COLOPHON         top

       This page is part of the libpcap (packet capture library)
       project.  Information about the project can be found at 
       ⟨http://www.tcpdump.org/⟩.  If you have a bug report for this
       manual page, see ⟨http://www.tcpdump.org/#patches⟩.  This page
       was obtained from the project's upstream Git repository
       ⟨https://github.com/the-tcpdump-group/libpcap.git⟩ on 2021-08-27.
       (At that time, the date of the most recent commit that was found
       in the repository was 2021-08-17.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

                              31 July 2016     PCAP_CAN_SET_RFMON(3PCAP)