pigeos-deploy

#!/bin/bash
#!/bin/bash
# (c) 2020-21 T.Hass
#
# USAGE pigeos-deploy <stage> [<stage>]
#
# STAGE:
# 	img_erase	erase the deployment dev be overwriting it with zeros
#	img_prepare	write raspbian-lite image and resize it
#	img_build	build the image
#	img_debug	mount the SD card to inspect the image
#	img_extract	extract the image file from the build SD card
#	ext_write	write the extracted image to an external card
# 	help  	  	show advanced help (manual)
#
###
#
# NAME: Pi/GEOS DEPLOY v0.2
#
# PURPOSE: Pi/GEOS deployment utillity
#
# DESCRIPTION: This utility is used to prepare a Pi/GEOS image.
#
# img_erase
# 	ensure all non-used blocks are zero for best compression results
#	for final image 
# img_build
#	build the image inside of a change_root environment
# img_extract
#	extract the image file from the build SD card and create an compressed
#	archive ready to use with rpi-imager or similar tools
# ext_write	
#	write the extracted image to an external card to test it on an other
#	system
# 	
# SEE ALSO: pigeos-setup, pigeos-config
#
#####

set -e

# setup for usage and manual
PROGNAME=$(type $0 | cut -d ' ' -f 3)
PROGDIR=$(dirname $PROGNAME)
PROGNAME=$(basename $PROGNAME)

img_file_in=~/Downloads/2023-05-03-raspios-buster-armhf-lite.img.xz
img_file_out=~/Downloads/$(date -Idate)-pigeos-buster-armhf-beta.img.xz
# internal SD card to build to image on
img_dev=/dev/mmcblk0
img_boot=p1
img_root=p2
# external SD card to export image on
ext_dev=/dev/sdb
ext_boot=1
ext_root=2
ext_conf=defaults/config.txt
ext_1str=$HOME/Downloads/firstrun.sh
# bundled GEOS image to include for off-line installation
bdl_geos_img=~/Downloads/ensprev60d.tgz

usage() {
  echo "" >&2
  echo "$PROGNAME:" "$@" >&2
  sed -n '/^###/q; /^#/!q; s/^#//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" >&2
  exit 254
}

help() {
  echo "" >&2
  echo "$PROGNAME:" "$@" >&2
  sed -n '/^#####/q; /^#/!q; s/^#*//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" >&2
  exit 254
}

img_erase() {
	dd if=/dev/zero of=$img_dev bs=1M status=progress
	return 0
}

img_prepare() {
	# write base image
	sudo rpi-imager --cli $img_file_in $img_dev
	# extend root file system
	echo ", +1G" | sudo sfdisk -N 2 $img_dev
	sudo fsck.ext4 -f 	$img_dev$img_root
	sudo resize2fs 		$img_dev$img_root
}

img_build() {
	# ingest Pi/GEOS files
	sudo mount -t ext4 $img_dev$img_root 	/mnt/pigeos/root/
	sudo mount -t vfat $img_dev$img_boot 	/mnt/pigeos/root/boot
	sudo mount -t proc proc					/mnt/pigeos/root/proc
	sudo mount -t sysfs sys					/mnt/pigeos/root/sys
	sudo mount -B /dev						/mnt/pigeos/root/dev
	sudo mount -B /dev/pts					/mnt/pigeos/root/dev/pts
	sudo cp    -L /etc/resolv.conf			/mnt/pigeos/root/etc
	sudo mkdir -p							/mnt/pigeos/root/usr/local/share/pigeos
	sudo cp     $bdl_geos_img				/mnt/pigeos/root/usr/local/share/pigeos/ensbudle.tgz
	sudo cp 	pigeos-setup 				/mnt/pigeos/root/usr/local/bin
	sudo chroot 							/mnt/pigeos/root/ \
	  /bin/bash -ic 'cd /tmp; pigeos-setup setup gr'
	  sync
	sudo umount 							/mnt/pigeos/root/{dev/pts,dev,sys,proc,boot}
	sudo umount $img_dev$img_root
	sudo fsck.ext4 -f $img_dev$img_root
}

img_extract() {
	# clean free sectors for better comression result
	sudo zerofree -v $img_dev$img_root
	# calculate imgage size
	img_last_sector=$(fdisk -l $img_dev | awk 'END{print $3/8}')
	dd if=$img_dev bs=4096 count=$img_last_sector status=progress \
	  | xz --threads=0 > $img_file_out
	sync
}

ext_write() {
	sudo rpi-imager --cli $img_file_out $ext_dev
#	sudo mount -t vfat $ext_dev$ext_boot 	/mnt/pigeos
#	sudo cp		$ext_conf					/mnt/pigeos
#	sudo cp		$ext_1str					/mnt/pigeos
#	sync
#	sudo umount	$ext_dev$ext_boot
}

img_debug() {
	# ingest Pi/GEOS files
	sudo mount -t ext4 $img_dev$img_root 	/mnt/pigeos/root/
	sudo mount -t vfat $img_dev$img_boot 	/mnt/pigeos/root/boot
	sudo mount -t proc proc					/mnt/pigeos/root/proc
	sudo mount -t sysfs sys					/mnt/pigeos/root/sys
	sudo mount -B /dev						/mnt/pigeos/root/dev
	sudo mount -B /dev/pts					/mnt/pigeos/root/dev/pts
	sudo cp    -L /etc/resolv.conf			/mnt/pigeos/root/etc
	sudo cp 	pigeos-setup 				/mnt/pigeos/root/usr/local/bin
	sudo chroot 							/mnt/pigeos/root/ \
	  /bin/bash -l
	  sync
	sudo umount 							/mnt/pigeos/root/{dev/pts,dev,sys,proc,boot}
	sudo umount $img_dev$img_root
	sudo fsck.ext4 -f $img_dev$img_root
}

### MAIN ###
for  action in $*; do
	$action || break
done