79 lines
2.6 KiB
Plaintext
79 lines
2.6 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_OPEN_DEAD 3PCAP "3 January 2014"
|
|
.SH NAME
|
|
pcap_open_dead, pcap_open_dead_with_tstamp_precision \- open a fake
|
|
pcap_t for compiling filters or opening a capture for output
|
|
.SH SYNOPSIS
|
|
.nf
|
|
.ft B
|
|
#include <pcap/pcap.h>
|
|
.ft
|
|
.LP
|
|
.ft B
|
|
pcap_t *pcap_open_dead(int linktype, int snaplen);
|
|
pcap_t *pcap_open_dead_with_tstamp_precision(int linktype, int snaplen,
|
|
u_int precision);
|
|
.ft
|
|
.fi
|
|
.SH DESCRIPTION
|
|
.PP
|
|
.B pcap_open_dead()
|
|
and
|
|
.B pcap_open_dead_with_tstamp_precision()
|
|
are used for creating a
|
|
.B pcap_t
|
|
structure to use when calling the other functions in libpcap. It is
|
|
typically used when just using libpcap for compiling BPF code; it can
|
|
also be used if using
|
|
.BR pcap_dump_open(3PCAP) ,
|
|
.BR pcap_dump(3PCAP) ,
|
|
and
|
|
.B pcap_dump_close(3PCAP)
|
|
to write a savefile if there is no
|
|
.B pcap_t
|
|
that supplies the packets to be written.
|
|
.PP
|
|
.I linktype
|
|
specifies the link-layer type for the
|
|
.BR pcap_t .
|
|
.PP
|
|
.I snaplen
|
|
specifies the snapshot length for the
|
|
.BR pcap_t .
|
|
.PP
|
|
When
|
|
.BR pcap_open_dead_with_tstamp_precision() ,
|
|
is used to create a
|
|
.B pcap_t
|
|
for use with
|
|
.BR pcap_dump_open() ,
|
|
.I precision
|
|
specifies the time stamp precision for packets;
|
|
.B PCAP_TSTAMP_PRECISION_MICRO
|
|
should be specified if the packets to be written have time stamps in
|
|
seconds and microseconds, and
|
|
.B PCAP_TSTAMP_PRECISION_NANO
|
|
should be specified if the packets to be written have time stamps in
|
|
seconds and nanoseconds. Its value does not affect
|
|
.BR pcap_compile(3PCAP) .
|
|
.SH SEE ALSO
|
|
pcap(3PCAP), \%pcap-linktype(@MAN_MISC_INFO@)
|