95 lines
2.7 KiB
Bash
95 lines
2.7 KiB
Bash
#!/bin/busybox sh
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# Copyright 2015 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# To bootstrap the factory installer on rootfs. This file must be executed as
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# PID=1 (exec).
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# Note that this script uses the busybox shell (not bash, not dash).
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#original: https://chromium.googlesource.com/chromiumos/platform/initramfs/+/refs/heads/main/factory_shim/bootstrap.sh
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set -x
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invoke_terminal() {
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local tty="$1"
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local title="$2"
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shift
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shift
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# Copied from factory_installer/factory_shim_service.sh.
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echo "${title}" >>${tty}
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setsid sh -c "exec script -afqc '$*' /dev/null <${tty} >>${tty} 2>&1 &"
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}
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enable_debug_console() {
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local tty="$1"
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echo -e '\033[1;33m[cros_debug] enabled on '${tty}'.\033[m'
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invoke_terminal "${tty}" "[Bootstrap Debug Console]" "/bin/busybox sh"
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}
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find_rootfs_partitions() {
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local disks=$(fdisk -l | sed -n "s/Disk \(\/dev\/.*\):.*/\1/p")
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if [ ! "${disks}" ]; then
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return 1
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fi
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for disk in $disks; do
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local partitions=$(fdisk -l $disk | sed -n "s/^[ ]\+\([0-9]\+\).*shimboot_rootfs:\(.*\)$/\1:\2/p")
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if [ ! "${partitions}" ]; then
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continue
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fi
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echo "${disk}${partitions}"
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done
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}
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#from original bootstrap.sh
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move_mounts() {
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local BASE_MOUNTS="/sys /proc /dev"
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local NEWROOT_MNT="$1"
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for mnt in $BASE_MOUNTS; do
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# $mnt is a full path (leading '/'), so no '/' joiner
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mkdir -p "$NEWROOT_MNT$mnt"
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mount -n -o move "$mnt" "$NEWROOT_MNT$mnt"
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done
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}
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#from original bootstrap.sh
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use_new_root() {
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local NEWROOT_MNT="$1"
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move_mounts $NEWROOT_MNT
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# Chroot into newroot, erase the contents of the old /, and exec real init.
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echo "About to switch root... Check VT2/3/4 if you stuck for a long time."
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# If you have problem getting console after switch_root, try to debug by:
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# 1. Try a simple shell.
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# exec <"${TTY}" >"${TTY}" 2>&1
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# exec switch_root "${NEWROOT_MNT}" /bin/sh
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# 2. Try to invoke factory installer directly
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# exec switch_root "${NEWROOT_MNT}" /usr/sbin/factory_shim_service.sh
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# -v prints upstart info in kmsg (available in INFO_TTY).
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exec switch_root "${NEWROOT_MNT}" /sbin/init
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}
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main() {
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echo "...:::||| Bootstrapping ChromeOS Factory Shim |||:::..."
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echo "TTY: ${TTY}, LOG: ${LOG_TTY}, echo: ${echo_TTY}, DEBUG: ${DEBUG_TTY}"
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echo "idk please work"
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sleep 5
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local rootfs_partitions=$(find_rootfs_partitions)
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for rootfs_partition in $rootfs_partitions; do
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local IFS=: read -r part_path part_name <<< $rootfs_partition
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echo "found bootable partition ${part_path}: ${part_name}"
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done
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sleep 5
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mkdir /newroot
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mount /dev/sda4 /newroot
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use_new_root /newroot
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enable_debug_console "/dev/pts/0"
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}
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main "$@"
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sleep 1d |