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Well, I looked a bit deeper into it. The limiting factor is the
s_maxbytes value from the superblock. (If the offset is larger than
s_maxbytes, default_llseek will return EINVAL, what I'm seeing), So,
where does it inherit this value from? My fs is reiserfs, so there's a
4GB limit. But the raw device is bound to the dvd (maj 22, min 64)?

Klaus
k.lichtenwalder@computer.org wrote:
>
> k.lichtenwalder@computer.org wrote:
> >
> > Alan Cox wrote:
> > >
> > > > sorry if this was already discussed, but I couldn't find it in the
> > > > archives. I'm trying to use xine (the linux dvd player) on
> > > > linux-2.4.3-ac3 and can't watch the whole dvd. The reason is that as
> > > > soon as the llseek sets a value in the offset_high field for sys_llseek,
> > > > I get a EINVAL back from the seek. Is this intentional? Or simply still
> > > > (only) a missing feature?
> > >
> > > Did you open the file with open64() ?
> >
> > No it's using open(), but sets -D_FILE_OFFSET_BITS=64. Looks like this
> > is not enough for the raw devices?
>
> Just to be on the right track I simply forced it to using open64 all
> along on this descriptor. It doesn't change anything. And, for the
> records, if I delete the raw device so that xine uses the block device,
> everything works fine.

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