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  20 .TH PCAP_FILE 3PCAP "3 January 2014"
  21 .SH NAME
  22 pcap_file \- get the standard I/O stream for a savefile being read
  23 .SH SYNOPSIS
  24 .nf
  25 .ft B
  26 #include <pcap/pcap.h>
  27 .ft
  28 .LP
  29 .ft B
  30 FILE *pcap_file(pcap_t *p);
  31 .ft
  32 .fi
  33 .SH DESCRIPTION
  34 .BR pcap_file ()
  35 returns the standard I/O stream of the ``savefile'', if a ``savefile''
  36 was opened with
  37 .BR pcap_open_offline (3PCAP),
  38 or
  39 .BR NULL ,
  40 if a network device was opened with
  41 .BR pcap_create (3PCAP)
  42 and
  43 .BR \%pcap_activate (3PCAP),
  44 or with
  45 .BR pcap_open_live (3PCAP).
  46 .PP
  47 Note that the Packet Capture library is usually built with large file
  48 support, so the standard I/O stream of the ``savefile'' might refer to
  49 a file larger than 2 gigabytes; applications that use
  50 .BR pcap_file ()
  51 should, if possible, use calls that support large files on the return
  52 value of
  53 .BR pcap_file ()
  54 or the value returned by
  55 .BR fileno (3)
  56 when passed the return value of
  57 .BR pcap_file ().
  58 .SH SEE ALSO
  59 .BR pcap (3PCAP)