From: Daniel Berger <djberg96@...>
Date: 2008-09-13T03:44:22+09:00
Subject: Re: Strange Errno::EOVERFLOW error with IO#read and IO#sysread



On Sep 12, 12:36 pm, "ara.t.howard" <ara.t.how...@gmail.com> wrote:
> On Sep 12, 2008, at 11:28 AM, Daniel Berger wrote:
>
>
>
>
>
> >> your programs are so powerful daniel - they're overwhelming the
> >> system!  maybe if you re-write in perl the system will be able to
> >> handle them.
>
> > Nope:
>
> > use strict;
> > use warnings;
>
> > my $file = "/proc/383/as";
>
> > open(FH, $file) or die $!;
>
> > my $buf = "";
>
> > # Dies here with: Value too large for defined data type
> > read(FH, $buf, 4, 0) or die $!;
>
> > close(FH);
>
> > Regards,
>
> > Dan
>
> /me kids
>
> /dan needs more coffee ;-)

As far as I can gather it's a 32-bit largefile issue. The short
version is that a 32-bit Ruby (or Perl, or Python) will simply not be
able to read that file. The same code using a 64-bit Ruby works fine.

Well, except the part where my io-extra library segfaults on IO.pread
in 64-bit mode, but nevermind that.

Regards,

Dan