Large file on a DVD-ROM showing -ve size

[David Landgren]

Folks,

I know FreeBSD deals with files larger than 2Gb, but I have a large file 
on a DVD I can't copy. This is on 4.10-STABLE FreeBSD, compiled Tue Oct 
5 09:42:59 CEST 2004

ls -l gives:

-r-xr-xr-x  1 root  wheel  -2131373162 Nov 17 01:05 bas1.bas

The fact that ls itself gets it wrong makes me nervous.

I compiled a 5.8.6 Perl with large file support and 64bitint and ran the 
following:

/usr/local/p586-64i/bin/perl -le \
     '$_=shift; print "$_\t", (stat $_)[7]' bas1.bas
bas1.bas        -2131373162

I updated my copy of rsync from ports and tried that way:

% rsync -av /cdrom/bas1.bas /home/david/
building file list ... done
bas1.bas

sent 87 bytes  received 40 bytes  254.00 bytes/sec
total size is -2131373162  speedup is -16782465.84

... and the resulting file is 0 bytes.

I'm wondering if there is something special I have to add as a parameter 
to the mount command, in order to have the kernel interpret things 
differently. I've had a look at mount_cd9660 but nothing leaps out at me.

The mount currently looks like this:

/dev/acd0c on /cdrom (cd9660, local, read-only)

Or something else? Thanks for any clues I can use,
David