Bug#924053: Find /.disk/info patch
I attach a patch that makes Secure Boot minimal image minimal grub.cfg
to seach for /disk/.info instead of /live/vmlinuz.
This fixes unbootable Secure Boot (even if you boot with Secure Boot
turned off) when live-build is setup to build with more than one linux
kernel flavour.
This has been tested in:
* HP250 G6 2X60EA with UEFI Boot and Secure Boot turned off (Boot from
UEFI USB)
* Tianacore (Boot from UEFI CDROM)
( Note: The actual test had this additional patch:
https://github.com/rescatux/live-build/commit/ad11d1c44909466baa259c2716d126dc9bc54080.patch
applied to it.
This enables the final user to use:
--linux-flavours "686 amd64:amd64"
)
Thus I conclude it works in binary_iso outputs.
The same thing that happens with grub-efi enabled outputs.
I never added added grub-efi support for either binary_hdd or
binary_netboot and it seems nobody else added it.
So I guess, as long as we only support binary_iso it's fine for now to
rely on /disk/.info (only generated by xorriso) till we find a better
method (like the one suggested by Thomas).
Thank you.
adrian15
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>From 8e5f36048559a00abbd7102ab0f7ecb2f278bf4f Mon Sep 17 00:00:00 2001
From: adrian15 <adrian15sgd@gmail.com>
Date: Sat, 9 Mar 2019 14:49:01 +0100
Subject: [PATCH] Detect device media by its /.disk/info file. This fixes
Secure Boot boot when internal hard disks have /live/vmlinuz files in it.
---
scripts/build/binary_grub-efi | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/scripts/build/binary_grub-efi b/scripts/build/binary_grub-efi
index 7afa07eb7..6e402683d 100755
--- a/scripts/build/binary_grub-efi
+++ b/scripts/build/binary_grub-efi
@@ -215,12 +215,11 @@ esac
# look in that partition for a grub.cfg file, and even if it finds it
# it will not be able to find the vmlinuz and initrd.
# Drop a minimal grub.cfg in the EFI partition that sets the root and prefix
-# to whatever partition holds the /live/vmlinuz image, and load the grub
+# to whatever partition holds the /.disk/info file, and load the grub
# config from that same partition.
-# This is what the Ubuntu livecd already does.
mkdir -p ${_CHROOT_DIR}/grub-efi-temp-cfg
cat >${_CHROOT_DIR}/grub-efi-temp-cfg/grub.cfg <<EOF
-search --set=root --file /live/vmlinuz
+search --set=root --file /.disk/info
set prefix=(\\\$root)/boot/grub
configfile (\\\$root)/boot/grub/grub.cfg
EOF
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