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.TH PCAP_DUMP_FTELL 3PCAP "25 July 2018"

.SH NAME

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

.SH SYNOPSIS

.nf

.ft B

#include <pcap/pcap.h>

.ft

.LP

.ft B

long pcap_dump_ftell(pcap_dumper_t *p);

.ft B

int64_t pcap_dump_ftell64(pcap_dumper_t *p);

.ft

.fi

.SH DESCRIPTION

.B pcap_dump_ftell()

returns the current file position for the ``savefile'', representing the

number of bytes written by

.B pcap_dump_open(3PCAP)

and

.BR pcap_dump(3PCAP) .

.B PCAP_ERROR

is returned on error. If the current file position does not fit in a

.BR long ,

it will be truncated; this can happen on 32-bit UNIX-like systems with

large file support and on Windows.

.B pcap_dump_ftell64()

returns the current file position in a

.BR int64_t ,

so if file offsets that don't fit in a

.B long

but that fit in a

.B int64_t

are supported, this will return the file offset without truncation.

.B PCAP_ERROR

is returned on error.

.SH SEE ALSO

pcap(3PCAP)