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-rw-r--r--pcap_dump_ftell.3pcap28
1 files changed, 22 insertions, 6 deletions
diff --git a/pcap_dump_ftell.3pcap b/pcap_dump_ftell.3pcap
index 6d5c828..20cb995 100644
--- a/pcap_dump_ftell.3pcap
+++ b/pcap_dump_ftell.3pcap
@@ -17,9 +17,9 @@
.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
.\"
-.TH PCAP_DUMP_FTELL 3PCAP "5 April 2008"
+.TH PCAP_DUMP_FTELL 3PCAP "25 July 2018"
.SH NAME
-pcap_dump_ftell \- get the current file offset for a savefile being written
+pcap_dump_ftell, pcap_dump_ftell64 \- get the current file offset for a savefile being written
.SH SYNOPSIS
.nf
.ft B
@@ -28,15 +28,31 @@ pcap_dump_ftell \- get the current file offset for a savefile being written
.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()
+.B pcap_dump_open(3PCAP)
and
-.BR pcap_dump() .
-\-1 is returned on error.
+.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), pcap_dump_open(3PCAP), pcap_dump(3PCAP)
+pcap(3PCAP)