81 lines
2.7 KiB
Plaintext
81 lines
2.7 KiB
Plaintext
.\" Copyright (c) 1994, 1996, 1997
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that: (1) source code distributions
|
|
.\" retain the above copyright notice and this paragraph in its entirety, (2)
|
|
.\" distributions including binary code include the above copyright notice and
|
|
.\" this paragraph in its entirety in the documentation or other materials
|
|
.\" provided with the distribution, and (3) all advertising materials mentioning
|
|
.\" features or use of this software display the following acknowledgement:
|
|
.\" ``This product includes software developed by the University of California,
|
|
.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
|
|
.\" the University nor the names of its contributors may be used to endorse
|
|
.\" or promote products derived from this software without specific prior
|
|
.\" written permission.
|
|
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
|
|
.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
|
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
.\"
|
|
.TH PCAP_CAN_SET_RFMON 3PCAP "31 July 2016"
|
|
.SH NAME
|
|
pcap_can_set_rfmon \- check whether monitor mode can be set for a
|
|
not-yet-activated capture handle
|
|
.SH SYNOPSIS
|
|
.nf
|
|
.ft B
|
|
#include <pcap/pcap.h>
|
|
.LP
|
|
.ft B
|
|
int pcap_can_set_rfmon(pcap_t *p);
|
|
.ft
|
|
.fi
|
|
.SH DESCRIPTION
|
|
.BR pcap_can_set_rfmon ()
|
|
checks whether monitor mode could be set on a capture handle when
|
|
the handle is activated.
|
|
.SH RETURN VALUE
|
|
.BR pcap_can_set_rfmon ()
|
|
returns
|
|
.B 0
|
|
if monitor mode could not be set,
|
|
.B 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:
|
|
.TP
|
|
.B PCAP_ERROR_NO_SUCH_DEVICE
|
|
The capture source specified when the handle was created doesn't
|
|
exist.
|
|
.TP
|
|
.B PCAP_ERROR_PERM_DENIED
|
|
The process doesn't have permission to check whether monitor mode
|
|
could be supported.
|
|
.TP
|
|
.B PCAP_ERROR_ACTIVATED
|
|
The capture handle has already been activated.
|
|
.TP
|
|
.B PCAP_ERROR
|
|
Another error occurred.
|
|
.BR pcap_geterr (3PCAP)
|
|
or
|
|
.BR \%pcap_perror (3PCAP)
|
|
may be called with
|
|
.I p
|
|
as an argument to fetch or display a message describing the error.
|
|
.LP
|
|
Additional error codes may be added in the future; a program should
|
|
check for
|
|
.BR 0 ,
|
|
.BR 1 ,
|
|
and negative, return codes, and treat all negative
|
|
return codes as errors.
|
|
.BR 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.
|
|
.SH SEE ALSO
|
|
.BR pcap (3PCAP),
|
|
.BR pcap_create (3PCAP),
|
|
.BR pcap_activate (3PCAP),
|
|
.BR pcap_set_rfmon (3PCAP)
|