pcap_dump_ftell(3pcap) — Linux manual page


PCAP_DUMP_FTELL(3PCAP)                            PCAP_DUMP_FTELL(3PCAP)

NAME         top

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

SYNOPSIS         top

       #include <pcap/pcap.h>

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

DESCRIPTION         top

       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.


       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         top


COLOPHON         top

       This page is part of the libpcap (packet capture library)
       project.  Information about the project can be found at 
       ⟨http://www.tcpdump.org/⟩.  If you have a bug report for this
       manual page, see ⟨http://www.tcpdump.org/#patches⟩.  This page
       was obtained from the project's upstream Git repository
       ⟨https://github.com/the-tcpdump-group/libpcap.git⟩ on 2023-06-23.
       (At that time, the date of the most recent commit that was found
       in the repository was 2023-06-21.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

                              25 July 2018        PCAP_DUMP_FTELL(3PCAP)