Re: [PATCH v4] PCI/sysfs: Change read permissions for VPD attributes

From: Leon Romanovsky
Date: Tue Feb 25 2025 - 13:14:46 EST




On Tue, Feb 25, 2025, at 19:30, Andrew Lunn wrote:
>> We always read VPD by using "sudo ..." command, until one of our customers
>> requested to provide a way to run monitoring library without any root access.
>> It runs on hypervisor and being non-root there is super important for them.
>
> You can chmod files in sys. So the administrator can change the
> permissions, and then non-root users can access it.
>
> This seems a more scalable solution that adding a special case in the
> kernel.

Special case is an outcome of discussion in previous versions. My initial patch which I believe is the right approach is to allow non-root read access to VPD for everyone.

Chmod solution is something that I thought, but for now I'm looking for the out of the box solution. Chmod still require from administrator to run scripts with root permissions.

Thanks

>
> Andrew