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log (){
date +"[%T] $@" | tee -a ${LOG_FILE}
}
export -f log
bootstrap(){
local ARCH=$(dpkg --print-architecture)
export http_proxy=${APT_PROXY}
if [ "$ARCH" != "armhf" ]; then
local BOOTSTRAP_CMD=qemu-debootstrap
else
local BOOTSTRAP_CMD=debootstrap
fi
${BOOTSTRAP_CMD} --components=main,contrib,non-free \
--arch armhf\
--no-check-gpg \
$1 $2 $3
}
export -f bootstrap
copy_previous(){
if [ ! -d ${PREV_ROOTFS_DIR} ]; then
echo "Previous stage rootfs not found"
false
fi
mkdir -p ${ROOTFS_DIR}
rsync -aHAX ${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=`mount | grep $DIR | cut -f 3 -d ' ' | sort -r`
for loc in $LOCS; do
umount $loc
done
done
}
export -f unmount
unmount_image(){
sync
sleep 1
local LOOP_DEV=$(losetup -j ${1} | cut -f1 -d':')
if [ -n "${LOOP_DEV}" ]; then
local MOUNTED_DIR=$(mount | grep $(basename ${LOOP_DEV} | head -n 1 | cut -f 3 -d ' '))
if [ -n "${MOUNTED_DIR}" ]; then
unmount $(dirname ${MOUNTED_DIR})
fi
sleep 1
kpartx -ds ${LOOP_DEV}
losetup -d ${LOOP_DEV}
fi
}
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
chroot ${ROOTFS_DIR}/ "$@"
}
export -f on_chroot
update_issue() {
local 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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