Re: accessing files larger than 2GB

[Peter Cloetens]

With other applications on the same operating system, we can access  
files larger than 2 GB. We have this issue both on Suse 8.2 and  
RedHat EL4.
For a simple C-program accessing files larger than 2 GB, we had to do  
the following things:
        - compile with specific options:
                gcc -o recad -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE recad.c
        - use fseeko instead of fseek
Could somebody check on Linux if file access (exist, fseek, ...)  
works as expected on files larger than 2GB?
Thanks,
Peter


On Sep 2, 2006, at 2:10 PM, Mulley, Nikhil wrote:

> I guess it is more of to do with the operating system than the
> application level. A search on 'file size limit linux' might help you.
>
> Regards.
>
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On Behalf Of Peter Cloetens
> Sent: Saturday, September 02, 2006 12:38 AM
> To: address@hidden
> Subject: accessing files larger than 2GB
>
> Hello,
> I have problems accessing files larger than 2GB with octave version
> 2.1.71 under linux. Can there be something obviously wrong with our
> installation or is this a known issue?
> Thanks,
> Peter
>
> Example:
>
> > ls -l Bufo_tschudi_10003.vol
> -rw-r--r--    1 boller   sid19    4289040000 2006-08-05 01:31
> Bufo_tschudi_10003.vol
> > ls('Bufo_tschudi_10003.vol')
> Bufo_tschudi_10003.vol
> > exist('Bufo_tschudi_10003.vol')
> ans = 0
> > glob('Bufo_tschudi_10003.vol')
> ans = {}
>
> fopen works:
> > fid=fopen('Bufo_tschudi_10003.vol')
> fid =
> {
>    id = 4
>    name = Bufo_tschudi_10003.vol
>    mode = rb
>    arch = ieee_little_endian
>    status = open
> }
>
> fread works
>
> fseek does not work
>
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