Re: unresolved symbol open
Vasili Goutas (vgo@ratio.de)
Tue, 08 Sep 1998 15:04:57 +0200
Alan Cox wrote:
>
> > for (i; i <=3D count; i++) {
> > to =3D get_user(from);
> > to++;
> > from++;
> > }
>
> >
> > both pointer are unsiged char *. from represents the address in user
> > space, to in kernel space.
> > After the loop I dump the data I read for debuging with following:
> >
> > for(i=3D0; i<count; ){
> > printk("%i: %X %X %X %X\n", i, to[i], to[i+1], to[i+2], to[i+3]);
> > i +=3D 4;
> > }
> >
> > The data I stored in kernel space are not the one I wanted to get from
> > userspace, like I can seen in var/messages.
It was a fial of me. I called above function with a wrong pointer. Now
it runs.
Sorry for that.
>
> Shouldnt that be printk("%i: %X %X %X %X\n", i, (unsigned int)to[i]... ?
>
> I forget the promotion rules. For 2.0.x your code appears correct (2.1.x
> changed get_user's behaviour).
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