Re: [Qemu-devel] [PATCH v2 2/5] block: vhdx header for the QEMU support of VHDX images

[Jeff Cody <jcody@redhat.com>]

On Wed, Apr 24, 2013 at 02:31:27PM +0200, Stefan Hajnoczi wrote:
> On Tue, Apr 23, 2013 at 10:24:21AM -0400, Jeff Cody wrote:
> > +/* ---- HEADER SECTION STRUCTURES ---- */
> > +
> > +/* Important note: these structures are as defined in the VHDX specification,
> > + * including byte order and size.  However, without being packed structures,
> > + * they will not match 1:1 data read from disk.  Rather than use potentially
> > + * non-portable packed structures, data is copied from read buffers into
> > + * the structures below.  However, for reference, please refrain from
> > + * modifying these structures to something that does not represent the spec */
> 
> Outdated comment?  The patch uses QEMU_PACKED.
> 

Yes, outdated comment, thanks.

> > +/* Header for the region table block */
> > +#define VHDX_RT_MAGIC 0x69676572  /* 'regi ' */
> 
> Not worth respinnning, but should be 'regi' (4 bytes).

Per Kevin's comments, I am removing all the _MAGIC's from the
headers anyway, and using memcmp against the strings in the source
file.  So I'll take care of the outdated comment as well then.