make-recovery-images

#!/bin/sh

set -e

die() {
   echo "$@" >&2
   exit 1
}

cleanup() {
   if [ -d "${TMP_DIR}" ]; then
      rm -rf "${TMP_DIR}"
   fi
}

trap cleanup EXIT

[ "$(id -u)" = "0" ] || die "$(basename $0) must be run as root"
[ -n "${SUDO_UID}" ] || die "SUDO_UID not defined"
[ -n "${SUDO_GID}" ] || die "SUDO_GID not defined"

build_images()
{
   chip="$1"
   for src in release-${chip}/*.zip; do
	   src=$(basename "${src}")
	   img=$(echo "${src}" | sed 's/\.zip/.img/')
	   TMP_DIR=$(mktemp -d)
	   (
	   cp "release-${chip}/${src}" "${TMP_DIR}"
	   mkdir "${TMP_DIR}/files"
	   cd "${TMP_DIR}/files"
	   unzip "../${src}"
	   cd "${TMP_DIR}"
	   dd if=/dev/zero bs=1M count=258 of=temp.img
	   /sbin/sfdisk temp.img <<EOF
label: dos
label-id: 0x0a7b5ac5
device: temp.img
unit: sectors

./test.img1 : start=        2048, size=       524288, type=c
EOF
   file temp.img
   kpartx -lv temp.img | head -n1 | awk '{print $1}'
   LOOP="/dev/mapper/$(kpartx -lv temp.img | head -n1 | awk '{print $1}')"
   kpartx -av temp.img
   /sbin/mkfs.fat -F 32 -s 1 "${LOOP}"
   mkdir fs
   mount "${LOOP}" fs
   cp -v files/* fs
   sync
   sleep 5
   umount fs
   # Delay before calling kpartx otherwise it's sometimes possible to get orphaned loopback devices
   sleep 5
   kpartx -dv temp.img
)
   image_dir="images-${chip}"
   mkdir -p "${image_dir}"
   chown "${SUDO_UID}:${SUDO_GID}" "${image_dir}"
   mv "${TMP_DIR}/temp.img" "${image_dir}/${img}"
   file "${image_dir}/${img}"
   cd "${image_dir}"
   zip "${src}" "${img}"
   cd ..
   rm "${image_dir}/${img}"
   chown "${SUDO_UID}:${SUDO_GID}" "${image_dir}/${src}"
   done
   echo "Wrote images for rpi-imager to $(pwd)/${image_dir}/${src}"
}

build_images 2711
build_images 2712