Re: [PATCH 4/4] nfs: sysfs: use default get_ownership() callback

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On 3 Oct 2024, at 11:14, Alexander Aring wrote:

> Since commit 5f81880d5204 ("sysfs, kobject: allow creating kobject
> belonging to arbitrary users") it seems that there could be cases for
> kobjects belonging to arbitrary users. This callback is set by default
> when using kset_create_and_add() to allow creating kobjects with
> different ownerships according to its parent.
>
> This patch will assign the default callback now for nfs kobjects for
> cases when the parent has different ownership than the default one.
>
> Signed-off-by: Alexander Aring <aahringo@xxxxxxxxxx>
> ---
>  fs/nfs/sysfs.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/fs/nfs/sysfs.c b/fs/nfs/sysfs.c
> index a6584203b7ff..b5737464b892 100644
> --- a/fs/nfs/sysfs.c
> +++ b/fs/nfs/sysfs.c
> @@ -27,6 +27,7 @@ static const struct kobj_ns_type_operations *nfs_netns_object_child_ns_type(
>  }
>
>  static struct kobj_type nfs_kset_type = {
> +	.get_ownership = kset_get_ownership,
>  	.release = kset_release,
>  	.sysfs_ops = &kobj_sysfs_ops,
>  	.child_ns_type = nfs_netns_object_child_ns_type,
> -- 
> 2.43.0

Hi Alex, if I understand this correctly, this patch just punts the ownership
callback up to fs_kobj, which, because it has no .get_ownership is just
going to be the same result: root.

Does this patch add value?

Ben






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