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4 changed files with 0 additions and 107 deletions

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# How to pivot_root
1. Stop all uneeded services
`systemctl isolate rescue-ssh.target`
1. Create the new / on ramdisk
`mkdir /tmp/tmproot && mount none /tmp/tmproot -t tmpfs`
1. Create all the base directories
`mkdir /tmp/tmproot/{proc,sys,usr,var,run,oldroot,root}`
1. Copy the base symlink
`cp -ax /{bin,etc,mnt,sbin,lib} /tmp/tmproot/`
1. Copy /dev
`cp -a /dev /tmp/tmproot/dev`
1. Copy the libs for services
`lsof -Fn / | grep ^n/ | cut -c2- | sort -u | grep /usr | rsync --files-from=- / /tmp/tmproot/`
1. Copy other libs and binaries needed
`ldd /usr/bin/{wget,gzip,dd,mount,ls,cp,cat} | grep -o '/lib[^ ]*' | sed 's/^/\/usr/' | xargs -n1 readlink -f | rsync -v --files-from=- / /tmp/tmproot/`
`ldd /usr/bin/{wget,gzip,dd,mount,ls,cp,cat} | grep -o '/lib[^ ]*' | sed 's/^/\/usr/' | rsync -lv --files-from=- / /tmp/tmproot/`
`rsync -v /usr/bin/{wget,gzip,dd,mount,ls,cp,cat} /tmp/tmproot/usr/bin/`
systemctl switch-root /tmp/tmproot/
## OLLLD WAY NOT WORKING ANYMORE
`unshare -m`
`pivot_root /tmp/tmproot/ /tmp/tmproot/oldroot`
`mount none /proc -t proc`
`mount none /sys -t sysfs`
`mount none /dev/pts -t devpts`
Fuck I need sshd
`wget -O - https://github.com/YunoHost/arm-images/releases/download/v2020.10/internetcube_4.0.8_v2020.10_lime2.img.gz | gzip -cd | dd bs=1M oflag=direct status=progress of=/dev/mmcblk0`

30
Vagrantfile vendored
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# -*- mode: ruby -*-
# vi: set ft=ruby :
# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
#
# This script can test the internetcube image patching just do vagrant up
$script = <<SCRIPT
export DEBIAN_FRONTEND=noninteractive
source /vagrant/yunocube.sh
mkdir -p /tmp/overlay
ln -s /vagrant /tmp/overlay/internetcube
InstallInternetCubeServices
SCRIPT
Vagrant.configure("2") do |config|
config.vm.box = "debian/buster64"
config.vm.provider :libvirt do |libvirt|
libvirt.memory = 2048
end
# config.vm.provision "shell" do |s|
# s.inline = $script
# end
end

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/dev/*
/run/*
/sys/*
/proc/*
/tmp/*
/var/tmp/*
/var/lib/apt/*
/var/lib/dpkg/*
/var/run/*
/var/cache/*
/boot/*
/usr/lib/modules/*
/usr/lib/python*
/usr/lib/*-linux-gnu/perl*
/usr/share/GeoIP*
/usr/share/man*
/usr/share/i18n*
/usr/share/perl*
/usr/share/doc*
/usr/share/locale*

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#!/bin/sh
sudo modprobe zram num_devices=4
echo 1G | sudo tee /sys/block/zram0/disksize
sudo mkfs.ext4 -m0 /dev/zram0
mkdir /tmp/sys
sudo mount /dev/zram0 /tmp/sys
sudo tar -cpSf - \
--acls --xattrs --selinux \
--exclude-from /vagrant/exclude.list \
/ |
sudo tar -xvf - \
--acls --xattrs --selinux \
-C /tmp/sys
sudo truncate -s0 /tmp/sys/etc/fstab
sudo swapoff -a
sudo mkdir -p /sysroot
sudo mount --rbind /tmp/sys /sysroot
sudo touch /etc/initrd-release