Ian Campbell writes ("Re: [PATCH XEN v5 13/23] tools: Refactor foreign memory
mapping into libxenforeignmemory"):
> On Wed, 2015-11-11 at 15:13 +0000, Ian Jackson wrote:
> Are you suggesting:
>
> void *xenforeignmemory_map(xenforeignmemory_handle *fmem, uint32_t dom,
> int prot, const xen_pfn_t *arr,
> int err_out[num],
> unsigned int num);
>
> Is that (a var sized array based on another param) really allowed?
Yes, if the array size precedes the array. Maybe you don't prefer
that.
> Or did you mean as comment like:
>
> void *xenforeignmemory_map(xenforeignmemory_handle *fmem, uint32_t dom,
>
> int prot, const xen_pfn_t *arr,
>
> int *err_out /*int err_out[num]*/,
> unsigned
> int num);
If you don't want to swap the arguments, at the very least
int err_out[/*num*/]
Ian.
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