Linux cli command pcap_can_set_rfmonpcap

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NAME 🖥️ pcap_can_set_rfmonpcap 🖥️

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(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

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

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