grub2/0321-Only-attempt-to-query-dev-mounted-in-boot-efi-as-boo.patch

From f6531c4888e80512c40ff144399f91919e4afff2 Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Tue, 24 Apr 2018 02:16:38 +0200
Subject: [PATCH] Only attempt to query dev mounted in /boot/efi as boot dev on
 EFI machines

The 10_linux script calls grub2-probe to probe the information for the dev
mounted in /boot/efi, but this directory may not exist on non-EFI machines
which leads to the following error when generating the grub2 config file:

/usr/sbin/grub2-probe: error: failed to get canonical path of `/boot/efi/'

Instead query for the device mounted in /boot and use that as the boot dev
for non-EFI machines.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
 util/grub.d/10_linux.in | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
index 1e7ec7071c3..13a6115056b 100644
--- a/util/grub.d/10_linux.in
+++ b/util/grub.d/10_linux.in
@@ -147,8 +147,13 @@ linux_entry ()
       fi
     fi
 
-    bootefi_device="`${grub_probe} --target=device /boot/efi/`"
-    prepare_grub_to_access_device ${bootefi_device} boot
+    if [ -d /sys/firmware/efi ]; then
+        bootefi_device="`${grub_probe} --target=device /boot/efi/`"
+        prepare_grub_to_access_device ${bootefi_device} boot
+    else
+        boot_device="`${grub_probe} --target=device /boot/`"
+        prepare_grub_to_access_device ${boot_device} boot
+    fi
 
     cat << EOF
 insmod blscfg