YunoHost/install_script
1
0
Fork 0
mirror of https://github.com/YunoHost/install_script.git synced 2024-09-03 20:06:25 +02:00
Code Issues Projects Releases Packages Wiki Activity

add action with sudo for using sdcard img

Browse source 
add ssh key to pi accound
manipulate mounting the image with losetup
some real actions with dd

not tested on sdcard yet
This commit is contained in:
Sylvain 2015-12-19 21:55:32 +01:00
parent fd57e4103d
commit 8937c2ae46
1 changed files with 50 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

56
build_arm_image/01_create_sdcard.sh
View file

@ -93,21 +93,24 @@ get_top_device() {
echo "$device"
}
umount_all_partition() {
umount_sdcard_partition() {
[[ -z "$SDCARD" ]] && { echo '$SDCARD is empty refusing to run'; return; }
local p
# search and replace all occurence of / by .
local pattern=${SDCARD////.}
pattern=${pattern/p[0-9]/}
for p in $(df | awk "/^$pattern/ { print \$1 }")
do
echo sudo umount $p
sudo umount $p
done
echo "done device for sdcard=${pattern//.//}"
}
dd_to_sdcard() {
# ensure
echo dd bs=16M if=_build_arm_steps/$DEBIAN_IMG of=$SDCARD
[[ -z "$SDCARD" ]] && { echo '$SDCARD is empty refusing to run'; return; }
# ensure that sdcard partitions are unmounted with umount_sdcard_partition
sudo dd bs=16M if=_build_arm_steps/$DEBIAN_IMG of=$SDCARD
sudo sync
}
test_all_tools() {
@ -117,12 +120,51 @@ test_all_tools() {
done
}
mount_loopback_img() {
[[ -z "$DEBIAN_IMG" ]] && { echo '$DEBIAN_IMG is empty refusing to run'; return; }
mkdir -p _build_arm_steps/mnt
local dev_loop0=$(sudo losetup -f --show _build_arm_steps/$DEBIAN_IMG)
local part_offset=$(sudo fdisk -l $dev_loop0 | awk '/Linux/ { print $2 }')
# mount the ext4 partition at computed offset
local dev_loop1=$(sudo losetup -f --show -o $((512 * $part_offset)) _build_arm_steps/$DEBIAN_IMG)
sudo mount $dev_loop1 _build_arm_steps/mnt/
}
umount_loopback_img() {
# find mounted loopback
local dev_loop1=$(mount | awk '/_build_arm_steps/ { print $1 }')
# compute loop n-1
local n=${dev_loop1#/dev/loop}
local dev_loop0="/dev/loop$(($n - 1))"
sudo umount _build_arm_steps/mnt
sudo losetup -d $dev_loop1
sudo losetup -d $dev_loop0
}
# copy a local key for ssh without password later
add_ssh_key_to_img() {
mount_loopback_img
cd _build_arm_steps/mnt/home/pi/
mkdir .ssh
local ssh_key=$OLDPWD/_build_arm_steps/nopasskey
# silently generate an ssh-key pair
yes | ssh-keygen -q -t rsa -C "nopasskey-install" -N "" -f $ssh_key > /dev/null
cp ${ssh_key}.pub .ssh/authorized_keys
# remove some permissions
chmod -R go= .ssh/
# give to pi user id
sudo chown -R --reference . .ssh
cd - > /dev/null
umount_loopback_img
}
# functions call in that order, edit remove a long running step if already done or if
# you want to skip it, step states are saved in folder _build_arm_steps and skipped automatically.
STEPS="
sha_verify_zip
unzip_img
umount_all_partition
add_ssh_key_to_img
umount_sdcard_partition
dd_to_sdcard"
# main wrapper, so the script can be sourced for debuging purpose or unittesting
@ -142,7 +184,7 @@ main() {
SDCARD=$(get_top_device "$2")
[[ -z "$SDCARD" ]] && die "argument 2 error: expecting sdcard_device"
test_all_tools dd sync sudo
test_all_tools dd sync sudo losetup ssh-keygen
mkdir -p _build_arm_steps
# actions loop
@ -159,4 +201,6 @@ if [[ $sourced -eq 0 ]]
then
# pass positional argument as is
main "$@"
else
echo $STEPS
fi