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pcap_can_set_rfmon(3pcap) — Linux manual page

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() returns0if 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) orpcap_perror(3PCAP) may be called withp 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 for0,1, 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 thelibpcap (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 2025-08-11.       (At that time, the date of the most recent commit that was found       in the repository was 2025-08-10.)  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 isnot part of the original manual page), send a mail to       man-pages@man7.org                               31 July 2016PCAP_CAN_SET_RFMON(3PCAP)

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