Vincent Stakenburg FrozenDroid

on linux 4.19, I get

error creating new backup file '/var/lib/dpkg/status-old': Invalid cross-device link

when trying to install stuff on a ubuntu docker container. this seems to be an issue with metacopy https://www.spinics.net/lists/linux-unionfs/msg06109.html

issue can be worked around by running

IBM BSRE 2016

Intro

In early June 2016 I received a forwarded e-mail in the university inbox about the BSRE, which stands for Best Student Recognition Event. I didn't know at the time what it comprises nor that I'd end up participating myself. I'm also not a best student in any way.

A quick Google search yielded a lone blog post from one of the previous runs of the event, in France, which apparently focused on fighting food waste. It also boasted ominous keywords like "networking" and "teams", which however turned out not to be so bad.

Solving the `root` User Issue

Running containers use root as the logged in user. This is fine, but in times like you run method like npm init and bower init, this will be cumbersome. This commands generate json configuration files for development. And when you try to edit this files in your host machine, you will notice that you may have Permission denied errors and you should run first chown command to give you permission on these created files.

Fortunately, we have a solution for this, by creating our own user inside the docker container.

In this example, let's say we created a container for our calculator angular app by using this command:

	""
	"" Darkwater's Neovim configuration
	""

	" Plugins {{{
	call plug#begin()

	" UI plugins
	Plug 'scrooloose/nerdtree', { 'on': 'NERDTreeToggle' }
	Plug 'majutsushi/tagbar', { 'on': 'Tagbar' }



	FACE BOOK HACKED MY PAGE THANK YOU ZUCKERBERG !!
	I EXPECT NOTHING FROM A BILDERBERG BOY CEO !
	LIKE YOU ASSHOLE ZUCKERBERG'S!!
	YOU NAZI BOY !@!

	class PluginImpl : JavaPlugin() {
	override fun onLoad() { instance = this }

	companion object {
	lateinit var instance : PluginImpl
	private set
	}
	}

	#include <inttypes.h>
	#include <stdlib.h>
	#include "stm32f1xx_ll_utils.h"

	/**
	* @brief USBD_FS_SerialStrDescriptor
	* return the serial number string descriptor
	* @param speed : current device speed
	* @param length : pointer to data length variable
	* @retval pointer to descriptor buffer

	qemu-system-x86_64 \
	-enable-kvm -M q35 -localtime -usb -name Windows `# General options` \
	-monitor /dev/tty -nographic -vga none -serial none `# Graphic options` \
	-cpu host,kvm=off -smp 1,sockets=1,cores=1,threads=1 `# CPU Options` \
	-m 1024 `# Memory` \
	-bios /usr/share/qemu/bios.bin `# BIOS` \
	-device ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1 `# PCIe Bus` \
	-device vfio-pci,host=02:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on `# Graphics card` \
	-device vfio-pci,host=02:00.1,bus=root.1,addr=00.1 `# Graphics card sound` \
	-soundhw hda `# Sound` \

Vincent Stakenburg FrozenDroid

IBM BSRE 2016

Intro

Solving the root User Issue

Solving the `root` User Issue