osx man page for pcap_open_offline

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)