pi image updates (#1)

* refactor(export-image): ensure loop device partition nodes are created

* refactor(stage0): only disable initramfs updates if update-initramfs.conf exists

* refactor(stage0): check whether foreign architecture is needed

* refactor(stage0): prevent kernel packages from creating useless symlinks

* refactor(stage1): remove cmdline.txt and config.txt symlinks

* refactor(stage2): rc.local drop-in no longer required, since Debian ships its own version

* refactor(export-image): make sure initramfs is created

export-image/05-finalise/01-run.sh

@@ -6,7 +6,7 @@ INFO_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.info"
 sed -i 's/^update_initramfs=.*/update_initramfs=all/' "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf"
 
 on_chroot << EOF
-update-initramfs -u
+update-initramfs -k all -c
 if [ -x /etc/init.d/fake-hwclock ]; then
 	/etc/init.d/fake-hwclock stop
 fi

export-image/prerun.sh

@@ -46,6 +46,7 @@ if [ "${NO_PRERUN_QCOW2}" = "0" ]; then
 		fi
 	done
 
+	ensure_loopdev_partitions "$LOOP_DEV"
 	BOOT_DEV="${LOOP_DEV}p1"
 	ROOT_DEV="${LOOP_DEV}p2"
 

scripts/common

@@ -111,3 +111,17 @@ ensure_next_loopdev() {
 	[[ -b "$loopdev" ]] || mknod "$loopdev" b 7 "$loopmaj"
 }
 export -f ensure_next_loopdev
+
+ensure_loopdev_partitions() {
+	local line
+	local partition
+	local majmin
+	lsblk -r -n -o "NAME,MAJ:MIN" "$1" | grep -v "^${1#/dev/} " | while read -r line; do
+		partition="${line%% *}"
+		majmin="${line#* }"
+		if [ ! -b "/dev/$partition" ]; then
+			mknod "/dev/$partition" b "${majmin%:*}" "${majmin#*:}"
+		fi
+	done
+}
+export -f ensure_loopdev_partitions

stage0/00-configure-apt/00-run.sh

@@ -14,8 +14,13 @@ fi
 
 cat files/raspberrypi.gpg.key | gpg --dearmor > "${STAGE_WORK_DIR}/raspberrypi-archive-stable.gpg"
 install -m 644 "${STAGE_WORK_DIR}/raspberrypi-archive-stable.gpg" "${ROOTFS_DIR}/etc/apt/trusted.gpg.d/"
-on_chroot << EOF
-dpkg --add-architecture armhf
-apt-get update
-apt-get dist-upgrade -y
+on_chroot <<- \EOF
+	ARCH="$(dpkg --print-architecture)"
+	if [ "$ARCH" = "armhf" ]; then
+		dpkg --add-architecture arm64
+	elif [ "$ARCH" = "arm64" ]; then
+		dpkg --add-architecture armhf
+	fi
+	apt-get update
+	apt-get dist-upgrade -y
 EOF

stage0/02-firmware/02-run.sh

@@ -1,3 +1,10 @@
 #!/bin/bash -e
 
-sed -i 's/^update_initramfs=.*/update_initramfs=no/' "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf"
+if [ -f "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf" ]; then
+	sed -i 's/^update_initramfs=.*/update_initramfs=no/' "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf"
+fi
+
+if [ ! -f "${ROOTFS_DIR}/etc/kernel-img.conf" ]; then
+	echo "do_symlinks=0" > "${ROOTFS_DIR}/etc/kernel-img.conf"
+fi
+rm -f "${ROOTFS_DIR}/"{vmlinuz,initrd.img}*

stage1/00-boot-files/00-run.sh

@@ -7,11 +7,8 @@ if ! [ -L "${ROOTFS_DIR}/boot/overlays" ]; then
 fi
 
 install -m 644 files/cmdline.txt "${ROOTFS_DIR}/boot/firmware/"
-if ! [ -L "${ROOTFS_DIR}/boot/cmdline.txt" ]; then
-	ln -s firmware/cmdline.txt "${ROOTFS_DIR}/boot/cmdline.txt"
-fi
-
 install -m 644 files/config.txt "${ROOTFS_DIR}/boot/firmware/"
-if ! [ -L "${ROOTFS_DIR}/boot/config.txt" ]; then
-	ln -s firmware/config.txt "${ROOTFS_DIR}/boot/config.txt"
-fi
+
+for file in cmdline.txt config.txt; do
+	printf "DO NOT EDIT THIS FILE\n\nThe file you are looking for has moved to %s\n" "/boot/firmware/${file}" > "${ROOTFS_DIR}/boot/${file}"
+done

stage2/01-sys-tweaks/01-run.sh

@@ -2,9 +2,6 @@
 
 install -m 755 files/resize2fs_once	"${ROOTFS_DIR}/etc/init.d/"
 
-install -d				"${ROOTFS_DIR}/etc/systemd/system/rc-local.service.d"
-install -m 644 files/ttyoutput.conf	"${ROOTFS_DIR}/etc/systemd/system/rc-local.service.d/"
-
 install -m 644 files/50raspi		"${ROOTFS_DIR}/etc/apt/apt.conf.d/"
 
 install -m 644 files/console-setup   	"${ROOTFS_DIR}/etc/default/"