pcap_can_set_rfmon(3pcap) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON

PCAP_CAN_SET_RFMON(3PCAP)                      PCAP_CAN_SET_RFMON(3PCAP)

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:

       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 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),
       pcap_set_rfmon(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
       man-pages@man7.org

                              31 July 2016     PCAP_CAN_SET_RFMON(3PCAP)