build/cfg/rpi3/install.sh

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#!/bin/sh
set -u -e -x
CONFIRM="Yes, I am"
DEVICE=$1
MOUNTED=0
function do_cleanup() {
[ $MOUNTED -ne 0 ] && umount /tmp/mnt.$$
rmdir /tmp/mnt.$$
}
trap do_cleanup ERR INT
cd `dirname $0`
echo "Are you *really* sure to use $DEVICE?"
echo "If so, type \"$CONFIRM\""
read input
[ "x$input" != "x$CONFIRM" ] && exit 1
[ ! -b $DEVICE ] && {
echo "Error, $DEVICE is not a block device"
exit 1
}
count=$(grep -c -e "^$DEVICE" /proc/mounts || true)
[ $count -ne 0 ] && {
echo "Error, $DEVICE is mounted"
exit 1
}
dd if=/dev/zero of=$DEVICE bs=512 count=1
parted --script $DEVICE \
"mklabel msdos" \
"mkpart primary fat32 1M 256M" \
"mkpart primary btrfs 256M 100%" \
"set 1 boot on"
mkfs.vfat ${DEVICE}p1
mkfs.btrfs -f ${DEVICE}p2
mkdir /tmp/mnt.$$
mount -t vfat ${DEVICE}p1 /tmp/mnt.$$
MOUNTED=1
cp -r boot/* /tmp/mnt.$$/
umount /tmp/mnt.$$
MOUNTED=0
mount -t btrfs ${DEVICE}p2 /tmp/mnt.$$
MOUNTED=1
mkdir /tmp/mnt.$$/etc /tmp/mnt.$$/etc_work
mkdir /tmp/mnt.$$/var_lib /tmp/mnt.$$/var_lib_work
umount /tmp/mnt.$$
MOUNTED=0
rmdir /tmp/mnt.$$