154 lines
3.8 KiB
Bash
154 lines
3.8 KiB
Bash
#!/bin/busybox sh
|
|
# Copyright 2015 The Chromium OS Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
#
|
|
# To bootstrap the factory installer on rootfs. This file must be executed as
|
|
# PID=1 (exec).
|
|
# Note that this script uses the busybox shell (not bash, not dash).
|
|
|
|
#original: https://chromium.googlesource.com/chromiumos/platform/initramfs/+/refs/heads/main/factory_shim/bootstrap.sh
|
|
|
|
#set -x
|
|
set +x
|
|
|
|
invoke_terminal() {
|
|
local tty="$1"
|
|
local title="$2"
|
|
shift
|
|
shift
|
|
# Copied from factory_installer/factory_shim_service.sh.
|
|
echo "${title}" >>${tty}
|
|
setsid sh -c "exec script -afqc '$*' /dev/null <${tty} >>${tty} 2>&1 &"
|
|
}
|
|
|
|
enable_debug_console() {
|
|
local tty="$1"
|
|
echo -e '\033[1;33m[cros_debug] enabled on '${tty}'.\033[m'
|
|
invoke_terminal "${tty}" "[Bootstrap Debug Console]" "/bin/busybox sh"
|
|
}
|
|
|
|
find_rootfs_partitions() {
|
|
local disks=$(fdisk -l | sed -n "s/Disk \(\/dev\/.*\):.*/\1/p")
|
|
if [ ! "${disks}" ]; then
|
|
return 1
|
|
fi
|
|
|
|
for disk in $disks; do
|
|
local partitions=$(fdisk -l $disk | sed -n "s/^[ ]\+\([0-9]\+\).*shimboot_rootfs:\(.*\)$/\1:\2/p")
|
|
if [ ! "${partitions}" ]; then
|
|
continue
|
|
fi
|
|
for partition in $partitions; do
|
|
echo "${disk}${partition}"
|
|
done
|
|
done
|
|
}
|
|
|
|
#from original bootstrap.sh
|
|
move_mounts() {
|
|
local base_mounts="/sys /proc /dev"
|
|
local newroot_mnt="$1"
|
|
for mnt in $base_mounts; do
|
|
# $mnt is a full path (leading '/'), so no '/' joiner
|
|
mkdir -p "$newroot_mnt$mnt"
|
|
mount -n -o move "$mnt" "$newroot_mnt$mnt"
|
|
done
|
|
}
|
|
|
|
print_selector() {
|
|
local rootfs_partitions="$1"
|
|
local i=1
|
|
|
|
echo "┌──────────────────────┐"
|
|
echo "│ Shimboot OS Selector │"
|
|
echo "└──────────────────────┘"
|
|
|
|
if [ "${rootfs_partitions}" ]; then
|
|
for rootfs_partition in $rootfs_partitions; do
|
|
#i don't know of a better way to split a string in the busybox shell
|
|
local part_path=$(echo $rootfs_partition | cut -d ":" -f 1)
|
|
local part_name=$(echo $rootfs_partition | cut -d ":" -f 2)
|
|
echo "${i}) ${part_name} on ${part_path}"
|
|
i=$((i+1))
|
|
done
|
|
else
|
|
echo "no bootable partitions found. please see the shimboot documentation to mark a partition as bootable."
|
|
fi
|
|
|
|
echo "q) reboot"
|
|
echo "s) enter a shell"
|
|
}
|
|
|
|
get_selection() {
|
|
local rootfs_partitions="$1"
|
|
local i=1
|
|
|
|
read -p "Your selection: " selection
|
|
if [ "$selection" = "q" ]; then
|
|
echo "rebooting now."
|
|
reboot -f
|
|
elif [ "$selection" = "s" ]; then
|
|
reset
|
|
enable_debug_console "/dev/pts/0"
|
|
return 0
|
|
fi
|
|
|
|
for rootfs_partition in $rootfs_partitions; do
|
|
local part_path=$(echo $rootfs_partition | cut -d ":" -f 1)
|
|
local part_name=$(echo $rootfs_partition | cut -d ":" -f 2)
|
|
|
|
if [ "$selection" = "$i" ]; then
|
|
echo "selected $part_path"
|
|
sleep 2
|
|
boot_target $part_path
|
|
return 0
|
|
fi
|
|
|
|
i=$((i+1))
|
|
done
|
|
|
|
echo "invalid selection"
|
|
return 1
|
|
}
|
|
|
|
boot_target() {
|
|
local target="$1"
|
|
#scuffed way to get init to output to the right tty
|
|
#x11 doesn't use tty1 anyways so this shouldn't cause issues
|
|
mount -o bind /dev/pts/0 /dev/tty1
|
|
|
|
echo "moving mounts to newroot"
|
|
mkdir /newroot
|
|
mount $target /newroot
|
|
move_mounts /newroot
|
|
|
|
echo "switching root"
|
|
mkdir -p /newroot/bootloader
|
|
pivot_root /newroot /newroot/bootloader
|
|
local tty="/dev/pts/0"
|
|
exec /sbin/init < "$tty" >> "$tty" 2>&1
|
|
}
|
|
|
|
main() {
|
|
echo "...:::||| Bootstrapping ChromeOS Factory Shim |||:::..."
|
|
echo "idk please work"
|
|
|
|
enable_debug_console "/dev/pts/1"
|
|
|
|
local rootfs_partitions=$(find_rootfs_partitions)
|
|
|
|
while true; do
|
|
clear
|
|
print_selector "${rootfs_partitions}"
|
|
if get_selection "${rootfs_partitions}"; then
|
|
break
|
|
fi
|
|
sleep 2
|
|
done
|
|
}
|
|
|
|
trap - EXIT
|
|
main "$@"
|
|
sleep 1d
|