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From: | Andrei Borzenkov |
Subject: | Re: Grub get and set efi variables |
Date: | Wed, 4 Nov 2015 08:38:01 +0300 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
04.11.2015 02:05, Mat Troi пишет:
Hi SevenBits, Thanks for letting me know. Out of curiosity, any particular reason why this patch did not get merged? It looks to be a useful feature.
First, this patch was reverse patch :)I am not convinced making it easy to set EFI variable from within GRUB is good thing, because there are known reports about systems rendered unbootable by writing too much into EFI flash. What is your use case that absolutely requires setting EFI variables? How are you going to implement it on other platforms?
Reading does not harm and may be useful, but then it should provide generic interface to access arbitrary vendor namespace, not only EFI global variables, and handle arbitrary binary data, even if initial implementation handles only subset of them. Once someone starts to use it changing it will be much more difficult.
May be it should take hints how to interpret variable values, or have format option akin to printf.
Thanks, Mat On Tue, Nov 3, 2015 at 12:12 PM, SevenBits <address@hidden> wrote:On Tuesday, November 3, 2015, Mat Troi <address@hidden> wrote:Hi, Searching through google, I see there was an email thread to add a patch for getting and setting efi variable in GRUB2. https://lists.gnu.org/archive/html/grub-devel/2013-11/msg00328.html However, looking at the tree, it doesn't look like this patch was added, am I missing something? Does anyone know if we have command to get/set efi variables in GRUB2? http://git.savannah.gnu.org/gitweb/?p=grub.git;a=tree;f=grub-core/commands/efi;h=005fd2efc9a2eede2a1eb1cab8081c360219107b;hb=HEADI'm the author of that patch. No, it was never merged into the tree. As far as I know, there is no equivalent functionality; GRUB does not support this feature.Thanks, Mat_______________________________________________ Grub-devel mailing list address@hidden https://lists.gnu.org/mailman/listinfo/grub-devel_______________________________________________ Grub-devel mailing list address@hidden https://lists.gnu.org/mailman/listinfo/grub-devel
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