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log (){
date +"[%T] $*" | tee -a "${LOG_FILE}"
}
export -f log
bootstrap(){
local ARCH
ARCH=$(dpkg --print-architecture)
export http_proxy=${APT_PROXY}
if [ "$ARCH" != "armhf" ]; then
local BOOTSTRAP_CMD=qemu-debootstrap
else
local BOOTSTRAP_CMD=debootstrap
fi
capsh --drop=cap_setfcap -- "${BOOTSTRAP_CMD}" --components=main,contrib,non-free \
--arch armhf \
--keyring "${STAGE_DIR}/files/raspberrypi.gpg" \
"$1" "$2" "$3" || rmdir "$2/debootstrap"
}
export -f bootstrap
copy_previous(){
if [ ! -d "${PREV_ROOTFS_DIR}" ]; then
echo "Previous stage rootfs not found"
false
fi
mkdir -p "${ROOTFS_DIR}"
rsync -aHAXx --exclude var/cache/apt/archives "${PREV_ROOTFS_DIR}/" "${ROOTFS_DIR}/"
}
export -f copy_previous
unmount(){
if [ -z "$1" ]; then
DIR=$PWD
else
DIR=$1
fi
while mount | grep -q "$DIR"; do
local LOCS
LOCS=$(mount | grep "$DIR" | cut -f 3 -d ' ' | sort -r)
for loc in $LOCS; do
umount "$loc"
done
done
}
export -f unmount
unmount_image(){
sync
sleep 1
local LOOP_DEVICES
LOOP_DEVICES=$(losetup -j "${1}" | cut -f1 -d':')
for LOOP_DEV in ${LOOP_DEVICES}; do
if [ -n "${LOOP_DEV}" ]; then
local MOUNTED_DIR
MOUNTED_DIR=$(mount | grep "$(basename "${LOOP_DEV}")" | head -n 1 | cut -f 3 -d ' ')
if [ -n "${MOUNTED_DIR}" ] && [ "${MOUNTED_DIR}" != "/" ]; then
unmount "$(dirname "${MOUNTED_DIR}")"
fi
sleep 1
losetup -d "${LOOP_DEV}"
fi
done
}
export -f unmount_image
on_chroot() {
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/proc)"; then
mount -t proc proc "${ROOTFS_DIR}/proc"
fi
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/dev)"; then
mount --bind /dev "${ROOTFS_DIR}/dev"
fi
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/dev/pts)"; then
mount --bind /dev/pts "${ROOTFS_DIR}/dev/pts"
fi
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/sys)"; then
mount --bind /sys "${ROOTFS_DIR}/sys"
fi
capsh --drop=cap_setfcap "--chroot=${ROOTFS_DIR}/" -- "$@"
}
export -f on_chroot
update_issue() {
local GIT_HASH
GIT_HASH=$(git rev-parse HEAD)
echo -e "Raspberry Pi reference ${IMG_DATE}\nGenerated using pi-gen, https://github.com/RPi-Distro/pi-gen, ${GIT_HASH}, ${1}" > "${ROOTFS_DIR}/etc/rpi-issue"
}
export -f update_issue
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