Re: [PATCH 0/2] blsuki: Add support for the XBOOTLDR partition

On Fri, Dec 12, 2025 at 1:17 PM Luca Boccassi <[email protected]> wrote:
> Yes it is extremely important to ensure the autodiscovered partition
> is on the same device as the ESP where the running bootloader was
> loaded from. Otherwise bad things can happen - for example, someone
> can plug in a usb disk and trick you into booting something that you
> never intended to. It's fundamental for autodiscovery not only in EFI
> mode, but in userspace later, so please ensure this restriction is
> respected.

I would say in UEFI case the best approach is getting the device name
via grub_efi_get_loaded_image()->device_handle. I'm just not sure if
the XBOOTLDR partition can be used in non-UEFI systems that support
BLS (like s390?) and what would be a way to handle those cases as well.

_______________________________________________
Grub-devel mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/grub-devel