File fde-tools-bsc1218181-replace-crypttab-key-path.patch of Package fde-tools

From b5ef2a580e28f80fc1634b32ebf7377b5c4ed40b Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Fri, 26 Jul 2024 16:27:20 +0800
Subject: [PATCH] firstboot: replace the key file path in crypttab

The key file path in crypttab is not necessary after the system
completes re-encryption since it becomes only a reference for GRUB2 when
generating the synthesized initrd to forward the disk key. Specifying a
key file path in the directory other than '/' could introduce the extra
dependency when unmounting the LUKS partitions and lead to the
unexpected error/warning. Unfortunately, the root partition is read-only
in SL-Micro, so KIWI has to create the key file in "/root".

To avoid the unexpected error/warning, this commit replace the key file
path with "/.virtual-root.key" after the firstboot script removes the
default key file. This makes dracut/systemd believe that the key file is
in the root partition, so there is no extra dependency when unmounting
the LUKS partitions.

The initrd also needs to be re-generated at the end to reflect the
change in /etc/crypttab.

FIXES: bsc#1218181

Signed-off-by: Gary Lin <glin@suse.com>
---
 firstboot/fde | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/firstboot/fde b/firstboot/fde
index 59fdb92..b917a35 100755
--- a/firstboot/fde
+++ b/firstboot/fde
@@ -112,6 +112,11 @@ function fde_setup_encrypted {
 	    return 1
 	fi
 	rm -f "${luks_keyfile}"
+
+	# Replace the key file path in /etc/crypttab with "/.virtual-root.key"
+	# to avoid errors when unmounting the LUKS partition (bsc#1218181)
+	sed -i "s,${luks_keyfile},/.virtual-root.key,g" /etc/crypttab
+
 	luks_keyfile=""
     fi
 
@@ -152,11 +157,12 @@ function fde_setup_encrypted {
     # Remove the password file
     rm -f ${pass_keyfile}
 
-    # Update /boot/grub2/grub.cfg
+    # Update initrd and /boot/grub2/grub.cfg
     if test -d "/boot/writable"; then
-	transactional-update grub.cfg
+	transactional-update initrd grub.cfg
 	transactional-update apply
     else
+	dracut -f
 	grub2-mkconfig -o /boot/grub2/grub.cfg
     fi
 
-- 
2.35.3