feat: add initramfs script for filesystem upgrade

Author: NN708

includes.container/usr/share/initramfs-tools/scripts/local-bottom/vanilla-filesystem-upgrade

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+PREREQ=""
+
+prereqs()
+{
+	echo "${PREREQ}"
+}
+
+case ${1} in
+	prereqs)
+		prereqs
+		exit 0
+		;;
+esac
+
+mount -o remount,rw ${rootmnt}
+if [ -d ${rootmnt}/.system ]; then
+	echo "vanilla-filesystem-upgrade: Detected old filesystem at /.system, upgrading..."
+	rm -f ${rootmnt}/etc ${rootmnt}/usr
+	mv ${rootmnt}/.system/FsGuard ${rootmnt}/.system/etc ${rootmnt}/.system/sysconf ${rootmnt}/.system/usr ${rootmnt}/.system/bin ${rootmnt}/.system/lib ${rootmnt}/.system/lib64 ${rootmnt}/.system/sbin ${rootmnt}/.system/vanilla.key ${rootmnt}
+	rm -rf ${rootmnt}/.system
+	echo "vanilla-filesystem-upgrade: Filesystem upgrade completed"
+fi

modules/46-filesystem-upgrade.yml

@@ -0,0 +1,4 @@
+name: 46-filesystem-upgrade
+type: shell
+commands:
+  - chmod +x /usr/share/initramfs-tools/scripts/local-bottom/vanilla-filesystem-upgrade

recipe.yml

@@ -40,6 +40,7 @@ stages:
       - modules/40-essentials.yml
       - modules/41-move-boot-scripts.yml
       - modules/45-lvm-fix.yml
+      - modules/46-filesystem-upgrade.yml
       - modules/50-fs.yml
       - modules/60-sound.yml
       - modules/70-compression.yml