66 lines
1.8 KiB
Bash
Executable File
66 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/bash
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# SPDX-FileCopyrightText: 2021 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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. bootstrap.cfg
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export PATH=/usr/bin:/usr/sbin
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# Unload the current kernel before things go weird
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kexec -u
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populate_device_nodes() {
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# http://www.linuxfromscratch.org/lfs/view/6.1/chapter06/devices.html
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test -c /dev/null || mknod -m 666 /dev/null c 1 3
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test -c /dev/zero || mknod -m 666 /dev/zero c 1 5
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test -c /dev/ptmx || mknod -m 666 /dev/ptmx c 5 2
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test -c /dev/tty || mknod -m 666 /dev/tty c 5 0
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test -c /dev/random || mknod -m 444 /dev/random c 1 8
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test -c /dev/urandom || mknod -m 444 /dev/urandom c 1 9
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}
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create_hdx() {
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# Create all of the hd{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 ${alpha}; do
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mknod -m 600 "/dev/hd${a}" b 3 "$((minor++))"
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# For each partition...
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for p in $(seq 15); do
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mknod -m 600 "/dev/hd${a}${p}" b 3 "$((minor++))"
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done
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done
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}
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# If there is no disk specified error out
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if [ -z "${DISK}" ]; then
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echo "You must specify a disk where sysb will be located!"
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exit 1
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fi
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# Otherwise, add stuff from sysa to sysb
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echo "Mounting sysc"
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mkdir /sysc
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# All the various structures that don't exist but needed to mount
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mkdir -p /etc /dev
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populate_device_nodes
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create_hdx
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mount -t ext2 "/dev/${DISK}" /sysc
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# Copy over appropriate data
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echo "Copying data into sysc"
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cp -r /dev /sysc/
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# Don't include /usr/src
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find /usr -mindepth 1 -maxdepth 1 -type d -not -name src -exec cp -r {} /sysc/{} \;
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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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