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Re: [PATCH 1/3] common/kernel: address violation of MISRA C Rule 13.6
- To: Alessandro Zucchelli <alessandro.zucchelli@xxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 25 Jun 2024 16:59:46 +0200
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- Cc: consulting@xxxxxxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 25 Jun 2024 14:59:57 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 25.06.2024 12:14, Alessandro Zucchelli wrote:
> --- a/xen/common/kernel.c
> +++ b/xen/common/kernel.c
> @@ -660,14 +660,15 @@ long do_xen_version(int cmd,
> XEN_GUEST_HANDLE_PARAM(void) arg)
>
> case XENVER_guest_handle:
> {
> + struct domain *d = current->domain;
Can a (new) variable thus initialized please be consistently named currd?
> xen_domain_handle_t hdl;
>
> if ( deny )
> memset(&hdl, 0, ARRAY_SIZE(hdl));
>
> - BUILD_BUG_ON(ARRAY_SIZE(current->domain->handle) != ARRAY_SIZE(hdl));
> + BUILD_BUG_ON(ARRAY_SIZE(d->handle) != ARRAY_SIZE(hdl));
Wasn't there the intention to exclude BUILD_BUG_ON() for specifically this
(and any other similar) rule?
Jan
> - if ( copy_to_guest(arg, deny ? hdl : current->domain->handle,
> + if ( copy_to_guest(arg, deny ? hdl : d->handle,
> ARRAY_SIZE(hdl) ) )
> return -EFAULT;
> return 0;
|
