Re: [PATCH] efi: libstub: add support for the apple_set_os protocol

[Aditya Garg]

> No. You cannot simply add a signed-off-by on someone else's behalf,
> even if you cc the person.
> 
> Andreas contributed code to GRUB (which is a GPLv3 project), and had
> no involvement whatsoever in creating this patch.
> 
> A signed-off-by is a statement on the part of the contributor (which
> may or may not be the author) that the contribution in question
> complies with the requirements imposed by the project in terms of
> copyright and licensing. Linux is GPLv2 not v3, so this code should at
> least be dual licensed in order to be reused directly.
> 
> I did not look at the GRUB patch, and IANAL, but this code invokes an
> Apple provided protocol (which is proprietary) in a hardcoded way for
> interoperability purposes, and so there is not much to
> copyright/license anyway. I would be fine with having just your
> signoff on this patch, but you could ask Andreas for a GPLv2+3 version
> of his GRUB patch if you are not sure.
> 

Code similar to the patch sent by Andreas uses MIT license

https://github.com/0xbb/apple_set_os.efi