95 lines
2.6 KiB
Bash
Executable File
95 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/bash
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# SPDX-FileCopyrightText: 2021-22 fosslinux <fosslinux@aussies.space>
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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set -e
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# shellcheck source=sysa/helpers.sh
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. helpers.sh
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# Unload the current kernel before things go weird
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kexec -u
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create_hdx() {
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# Create all of the sd{a,b,c..}
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minor=0
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alpha="a b c d e f g h i j k l m n o p" # 16 disks -- more than enough
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# For each disk...
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for a in ${alpha}; do
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mknod -m 600 "/dev/sd${a}" b 8 "$((minor++))"
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# For each partition...
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for p in $(seq 15); do
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mknod -m 600 "/dev/sd${a}${p}" b 8 "$((minor++))"
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done
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done
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}
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# All the various structures that don't exist but needed to mount
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mkdir -p /etc /dev
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populate_device_nodes
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create_hdx
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ask_disk() {
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echo
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echo "What disk would you like to use for live-bootstrap?"
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echo "This disk may have pre-prepared sources on it."
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echo "If there is no partition we will make one".
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echo "Please provide in format sdxx (as you would find under /dev),"
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echo "or sdx if it is a blank disk. An ext4 partition is expected on"
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echo "existing disks."
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echo "You can type 'list' to get a list of disks to help you figure"
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echo "out which is the right disk."
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echo "NO WARRANTY IS PROVIDED FOR BUGGY BEHAVIOUR, INCLUDING THAT"
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echo "REGARDING DISKS & DATA."
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echo
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read -r DISK
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if [ "${DISK}" = "list" ]; then
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fdisk -l
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ask_disk
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elif [ -z "${DISK}" ] || ! [ -e "/dev/${DISK}" ]; then
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echo "Invalid."
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ask_disk
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fi
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}
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if [ -z "${DISK}" ] || ! [ -e "/dev/${DISK}" ]; then
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echo "You did not provide a valid disk in the configuration file."
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ask_disk
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echo "DISK=${DISK}" >> /usr/src/bootstrap.cfg
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fi
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# Is it a full disk, and not a partition
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# shellcheck disable=SC2012
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if [ $(($(ls -l "/dev/${DISK}" | sed "s/.*, *//" | sed "s/ .*//") % 8)) -eq 0 ]; then
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if ! fdisk -l "/dev/${DISK}" | grep -qE "${DISK}p?[0-9]" ; then
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echo "Creating partition table and partition"
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echo ";" | sfdisk "/dev/${DISK}"
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mkfs.ext4 "/dev/${DISK}1"
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DISK="${DISK}1"
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fi
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fi
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echo "export DISK=${DISK}" >> /usr/src/bootstrap.cfg
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PREFIX=/usr
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SOURCES="${PREFIX}/src"
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SYSC=/sysc
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# Otherwise, add stuff from sysa to sysb
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echo "Mounting sysc"
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mkdir /sysc
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mount -t ext4 "/dev/${DISK}" /sysc
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# Copy over appropriate data
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echo "Copying data into sysc"
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sys_transfer "${SYSC}" /sysc_src gzip patch
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sync
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# switch_root into sysc 1. for simplicity 2. to avoid kexecing again
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# spouts a few errors because we don't have /proc /sys or /dev mounted
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echo "Switching into sysc"
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exec switch_root /sysc /init
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