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pcap_file(3) [netbsd man page]

PCAP_FILE(3)						     Library Functions Manual						      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 net- work 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)

Check Out this Related Man Page

PCAP_OPEN_OFFLINE(3PCAP)                                                                                                  PCAP_OPEN_OFFLINE(3PCAP)

NAME
pcap_open_offline, pcap_fopen_offline - open a saved capture file for reading SYNOPSIS
#include <pcap/pcap.h> char errbuf[PCAP_ERRBUF_SIZE]; pcap_t *pcap_open_offline(const char *fname, char *errbuf); pcap_t *pcap_fopen_offline(FILE *fp, char *errbuf); DESCRIPTION
pcap_open_offline() is called to open a ``savefile'' for reading. fname specifies the name of the file to open. The file can have the pcap file format as described in pcap-savefile(5), which is the file format used by, among other programs, tcpdump(1) and tcpslice(1), or can have the pcap-ng file format, although not all pcap-ng files can be read. The name "-" in a synonym for stdin. Alternatively, you may call pcap_fopen_offline() to read dumped data from an existing open stream fp. Note that on Windows, that stream should be opened in binary mode. RETURN VALUE
pcap_open_offline() and pcap_fopen_offline() return a pcap_t * on success and NULL on failure. If NULL is returned, errbuf is filled in with an appropriate error message. errbuf is assumed to be able to hold at least PCAP_ERRBUF_SIZE chars. SEE ALSO
pcap(3PCAP), pcap-savefile(5) 5 April 2008 PCAP_OPEN_OFFLINE(3PCAP)
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