[CRIU] [PATCH 2/6] Skip generating iov for non PROT_READ region

[Pavel Emelianov]

On 7/25/19 4:13 AM, Abhishek Dubey wrote:
> skip iov-generation for regions not having PROT_READ,
> since process_vm_readv syscall fail to process such regions
> 
> Signed-off-by: Abhishek Dubey <dubeyabhishek777 at gmail.com>
> ---
>  criu/mem.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/criu/mem.c b/criu/mem.c
> index a7e8d0b..5c13690 100644
> --- a/criu/mem.c
> +++ b/criu/mem.c
> @@ -361,6 +361,12 @@ static int generate_vma_iovs(struct pstree_item *item, struct vma_area *vma,
>  				!vma_area_is(vma, VMA_ANON_SHARED))
>  		return 0;
>  
> +	if (!(vma->e->prot & PROT_READ)) {
> +		if (pre_dump)
> +			return 0;
> +		has_parent = false;

Why setting this to false in this case?

> +	}
> +
>  	if (vma_entry_is(vma->e, VMA_AREA_AIORING)) {
>  		if (pre_dump)
>  			return 0;
>