Man page of PCAP_DUMP_FTELL

Section: Misc. Reference Manual Pages (3PCAP)
Updated: 25 July 2018
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This man page documents libpcap version 1.10.1.

Your system may have a different version installed, possibly with some local modifications. To achieve the best results, please make sure this version of this man page suits your needs. If necessary, try to look for a different version on this web site or in the man pages available in your installation.
 

NAME

pcap_dump_ftell, pcap_dump_ftell64 - get the current file offset for a savefile being written  

SYNOPSIS

#include <pcap/pcap.h>

long pcap_dump_ftell(pcap_dumper_t *p);
int64_t pcap_dump_ftell64(pcap_dumper_t *p);
 

DESCRIPTION

pcap_dump_ftell() returns the current file position for the ``savefile'', representing the number of bytes written by pcap_dump_open(3PCAP) and pcap_dump(3PCAP). PCAP_ERROR is returned on error. If the current file position does not fit in a long, it will be truncated; this can happen on 32-bit UNIX-like systems with large file support and on Windows. pcap_dump_ftell64() returns the current file position in a int64_t, so if file offsets that don't fit in a long but that fit in a int64_t are supported, this will return the file offset without truncation. PCAP_ERROR is returned on error.  

BACKWARD COMPATIBILITY

The function pcap_dump_ftell64() became available in libpcap release 1.9.0. In previous releases, there was no mechanism to obtain a file offset that is too large to fit in a long.  

SEE ALSO

pcap(3PCAP)


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