this post was submitted on 24 Sep 2023
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SteamDeckPirates

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Block Network Access for Game? (lemmy.ml)
submitted 1 year ago by [email protected] to c/[email protected]
14 comments fedilink hide all child comments
 

I know there are some tools including firejail and bindtointerface on standard Linux Distros, but they don't run in userland, so whenever the deck updates they will be overwritten.

Anyone have any ideas how to block access on a Steam Deck?

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[–] [email protected] 1 points 1 year ago (2 children)

From what i understand any changes to the system outside of the userland will be overwritten after a SteamOS update.

[–] [email protected] 3 points 1 year ago (1 children)

That is correct. The best case is to write a script to make your desired changes, and then run it after each system update.
My own use-case is that I have a NFS mount-point for my Steam Deck to use extra storage on my NAS. After the first time I figured out how to get it mounted, I made a script to disable read-only filesystem, make all the changes to the system, and then re-enable read-only filesystem. After every system update, I just run that script once.

[–] [email protected] 1 points 1 year ago (1 children)

Thanks for the reply!

I can find my way around bash, but the most advanced script I've personally authored it probably "Hello World." Would you be willing to share the script from pastebin or github? IDK, I guess you could copy and paste it posted on Lemmy.

I think I need to do exactly what you recommended, but I may need some help setting it up. So are an update, you simply run the script to get the system changes re-applied?

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago) (1 children)

This is the script. /home/deck/scripts/fstab contains my customised fstab file. Yes, after an update, I just run this script once.

#!/bin/bash

if [ ! -f ~/.config/kdesurc ];then
  touch ~/.config/kdesurc
  echo "[super-user-command]" > ~/.config/kdesurc
  echo "super-user-command=sudo" >> ~/.config/kdesurc
fi

if [ ! -f /var/mnt/nas ];then
  sudo -c 'sudo mkdir "/var/mnt/nas"'
fi

sudo cp -a /home/deck/scripts/fstab /etc/fstab
sudo steamos-readonly disable
sudo pacman -Syy
sudo pacman-key --init
sudo pacman-key --populate
sudo pacman -S --overwrite "*" nfs-utils
sudo steamos-readonly enable
sudo mount -a
[–] [email protected] 1 points 1 year ago

Thank you. I really appreciate you sharing, this helps a lot!