..snip..
> > + mfn = host_spa >> XC_PAGE_SHIFT;
> > + gpfn = guest_spa >> XC_PAGE_SHIFT;
> > + nr_gpfns = guest_size >> XC_PAGE_SHIFT;
> > +
> > + switch ( st.st_mode & S_IFMT )
> > + {
> > + case S_IFBLK:
> > + ret = add_pages(gc, domid, mfn, gpfn, nr_gpfns);
>
> You will need to change the return value.
> > + break;
> > +
> > + case S_IFREG:
> > + ret = add_file(gc, domid, fd, mfn, gpfn, nr_gpfns);
>
> Ditto here.
Also should we close the fd descriptor if there are any errors?
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