@(#) $Header: /tcpdump/master/libpcap/pcap_dump_open.3pcap.in,v 1.1 2008-10-23 05:56:59 guy Exp $
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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.
PCAP_DUMP_OPEN 3PCAP "5 April 2008"
NAME
pcap_dump_open, pcap_dump_fopen - open a file to which to write packets
SYNOPSIS
#include <pcap/pcap.h>pcap_dumper_t *pcap_dump_open(pcap_t *p, const char *fname); pcap_dumper_t *pcap_dump_fopen(pcap_t *p, FILE *fp);
DESCRIPTIONpcap_dump_open() is called to open a ``savefile'' for writing. fname specifies the name of the file to open. The file will have the same format as those used by tcpdump (1) and tcpslice (1). The name "-" in a synonym for stdout .pcap_dump_fopen() is called to write data to an existing open stream fp . Note that on Windows, that stream should be opened in binary mode.
p is a capture or ``savefile'' handle returned by an earlier call to pcap_create() and activated by an earlier call to pcap_activate() , or returned by an earlier call to pcap_open_offline() , pcap_open_live() , or pcap_open_dead() . The link-layer type and snapshot length from p are used as the link-layer type and snapshot length of the output file.
RETURN VALUESA pointer to a pcap_dumper_t structure to use in subsequent pcap_dump() and pcap_dump_close() calls is returned on success. NULL is returned on failure. If NULL is returned, pcap_geterr(p) can be used to get the error text.SEE ALSOpcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), pcap_open_offline(3PCAP), pcap_open_live(3PCAP), pcap_open_dead(3PCAP), pcap_dump(3PCAP), pcap_dump_close(3PCAP), pcap_geterr(3PCAP), pcap-savefile(@MAN_FILE_FORMATS@)