Re: [Qemu-devel] [PATCH v3 03/10] vmdk: use unsigned values for on disk header fields

[Fam Zheng <famz@redhat.com>]

On Mon, 08/05 23:30, Jeff Cody wrote:
> On Tue, Aug 06, 2013 at 09:40:36AM +0800, Fam Zheng wrote:
> > The size and offset fields are all non-negative values, use uint64_t for
> > them to avoid getting negative in memory value by int overflow.
> > 
> > Signed-off-by: Fam Zheng <famz@redhat.com>
> > ---
> >  block/vmdk.c | 16 ++++++++--------
> >  1 file changed, 8 insertions(+), 8 deletions(-)
> > 
> > diff --git a/block/vmdk.c b/block/vmdk.c
> > index 7ebe36b..976b871 100644
> > --- a/block/vmdk.c
> > +++ b/block/vmdk.c
> > @@ -67,14 +67,14 @@ typedef struct {
> >  typedef struct {
> >      uint32_t version;
> >      uint32_t flags;
> > -    int64_t capacity;
> > -    int64_t granularity;
> > -    int64_t desc_offset;
> > -    int64_t desc_size;
> > -    int32_t num_gtes_per_gte;
> > -    int64_t rgd_offset;
> > -    int64_t gd_offset;
> > -    int64_t grain_offset;
> > +    uint64_t capacity;
> > +    uint64_t granularity;
> > +    uint64_t desc_offset;
> 
> desc_offset in BDRVVmdkState should be uint64_t as well, right?

Yes, will fix.
> 
> > +    uint64_t desc_size;
> > +    uint32_t num_gtes_per_gte;
> > +    uint64_t rgd_offset;
> > +    uint64_t gd_offset;
> > +    uint64_t grain_offset;
> >      char filler[1];
> >      char check_bytes[4];
> >      uint16_t compressAlgorithm;
> > -- 
> > 1.8.3.4
> > 

-- 
Fam