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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.
+.\"
+.TH PCAP_FILE 3PCAP "3 January 2014"
+.SH NAME
+pcap_file \- get the standard I/O stream for a savefile being read
+.SH SYNOPSIS
+.nf
+.ft B
+#include <pcap/pcap.h>
+.ft
+.LP
+.ft B
+FILE *pcap_file(pcap_t *p);
+.ft
+.fi
+.SH DESCRIPTION
+.B pcap_file()
+returns the standard I/O stream of the ``savefile,'' if a ``savefile''
+was opened with
+.BR pcap_open_offline(3PCAP) ,
+or
+.BR NULL ,
+if a network device was opened with
+.B pcap_create(3PCAP)
+and
+.BR \%pcap_activate(3PCAP) ,
+or with
+.BR pcap_open_live(3PCAP) .
+.PP
+Note that the Packet Capture library is usually built with large file
+support, so the standard I/O stream of the ``savefile'' might refer to
+a file larger than 2 gigabytes; applications that use
+.B pcap_file()
+should, if possible, use calls that support large files on the return
+value of
+.B pcap_file()
+or the value returned by
+.B fileno(3)
+when passed the return value of
+.BR pcap_file() .
+.SH SEE ALSO
+pcap(3PCAP)