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Update configuration.nix

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ska
2025-12-22 15:20:03 +00:00
parent 6817b784ea
commit e18021d355
1 changed files with 8 additions and 21 deletions
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29
configuration.nix
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@@ -217,27 +217,14 @@
# USB ROOT DEVICE MONITOR (SHUTDOWN ON DISCONNECT) # USB ROOT DEVICE MONITOR (SHUTDOWN ON DISCONNECT)
############################################################ ############################################################
systemd.services.usb-root-monitor = { # Monitor root device removal and shut down
description = "Monitor USB LUKS container and shut down if removed"; services.udev.extraRules = ''
script = '' # Match the root filesystem device by label (or use PARTLABEL/UUID if preferred)
LUksDevice="/dev/disk/by-partlabel/nixos-crypt" KERNEL=="sd*", ENV{ID_FS_LABEL}=="nixos-root", SYMLINK+="nixos-root-device"
while true; do
if ! test -e "$LUksDevice"; then # Trigger when the root device is removed
/run/current-system/sw/bin/logger -t usb-root-monitor "LUKS container missing – shutting down immediately" ACTION=="remove", KERNEL=="sd*", ENV{ID_FS_LABEL}=="nixos-root", RUN+="/run/current-system/sw/bin/systemctl poweroff"
/run/current-system/sw/bin/systemctl --force poweroff '';
exit 0
fi
sleep 3
done
'';
serviceConfig = {
Type = "simple";
Restart = "always";
RestartSec = 5;
User = "root";
};
wantedBy = [ "multi-user.target" ];
};
############################################################ ############################################################
# NIXOS VERSION # NIXOS VERSION