> 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
