pcap_file man page on FreeBSD

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PCAP_FILE(3)							  PCAP_FILE(3)

NAME
       pcap_file - get the standard I/O stream for a savefile being read

SYNOPSIS
       #include <pcap/pcap.h>

       FILE *pcap_file(pcap_t *p);

DESCRIPTION
       pcap_file()  returns  the standard I/O stream of the ``savefile,'' if a
       ``savefile'' was opened with pcap_open_offline(), or NULL, if a network
       device  was  opened  with  pcap_create()	 and  pcap_activate(), or with
       pcap_open_live().

       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  pcap_file()
       should,	if  possible, use calls that support large files on the return
       value of pcap_file() or the value returned by fileno() when passed  the
       return value of pcap_file().

SEE ALSO
       pcap(3), pcap_open_offline(3)

				 5 April 2008			  PCAP_FILE(3)
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