freebsd-src/contrib/libpcap/pcap_dump_ftell.3pcap
Joseph Mingrone 6f9cba8f8b
libpcap: Update to 1.10.3
Local changes:

- In contrib/libpcap/pcap/bpf.h, do not include pcap/dlt.h.  Our system
  net/dlt.h is pulled in from net/bpf.h.
- sys/net/dlt.h: Incorporate changes from libpcap 1.10.3.
- lib/libpcap/Makefile: Update for libpcap 1.10.3.

Changelog:	https://git.tcpdump.org/libpcap/blob/95691ebe7564afa3faa5c6ba0dbd17e351be455a:/CHANGES
Reviewed by:	emaste
Obtained from:	https://www.tcpdump.org/release/libpcap-1.10.3.tar.gz
Sponsored by:	The FreeBSD Foundation
2023-03-31 16:02:22 -03:00

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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
.BR pcap_dump_ftell ()
returns the current file position for the ``savefile'', representing the
number of bytes written by
.BR 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.
.BR 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 BACKWARD COMPATIBILITY
The function
.BR 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
.BR long .
.SH SEE ALSO
.BR pcap (3PCAP)