Re: mmap specification - was: ... select specification

Martijn Sipkema
2004-10-09T20:10:49Z

From: "Andries Brouwer" <aebr@win.tue.nl>
> On Thu, Oct 07, 2004 at 07:30:53PM -0400, Kyle Moffett wrote:
> > On Oct 07, 2004, at 18:46, Andries Brouwer wrote:
> > >The POSIX text is clear to me, and Linux is compliant.
> > >On the other hand, I have no idea what you try to say.
> >
> > >On Thu, Oct 07, 2004 at 06:32:43PM -0400, Kyle Moffett wrote:
> > >
> > >>>>"References within the address range starting at pa and continuing
> > >>>>for len bytes to whole pages following the end of an object shall
> > >>>>result in delivery of a SIGBUS signal."
> >
> > Reviewing this once more:
> >
> > >References within the address range starting at pa and continuing for
> > >len bytes:
> > range = {pa ... pa+len};
> >
> > >To whole pages following the end of an object:
> > range = {pa ... PAGE_ROUND_UP(pa+len)};
>
> It is here you are wrong.

Indeed, I think Kyle took ``end of an object'' to mean the end of the
mapping instead of the end of what is mapped, e.g. EOF in case of a file.

--ms