forked from pub-solar/os
98 lines
3.6 KiB
Nix
98 lines
3.6 KiB
Nix
{ config, pkgs, lib, vm, ... }:
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let
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psCfg = config.pub-solar;
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xdg = config.home-manager.users."${psCfg.user.name}".xdg;
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varsFile = "${xdg.dataHome}/libvirt/OVMF_VARS_${vm.name}.fd";
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generateXML = import ./guest-xml.nix;
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in
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{
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = "yes";
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Restart = "no";
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};
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script =
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let
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networkXML = pkgs.writeText "network.xml" (import ./network-xml.nix { inherit config; inherit pkgs; inherit lib; });
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machineXML = pkgs.writeText "${vm.name}.xml" (vm.generateXML { inherit config; inherit pkgs; inherit lib; inherit vm; varsFile = varsFile; });
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in
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''
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echo "Checking if ${vm.name} is already running"
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STATUS=$(${pkgs.libvirt}/bin/virsh list --all | grep "${vm.name}" | ${pkgs.gawk}/bin/awk '{ print $3 " " $4 }' )
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if [[ $STATUS != "shut off" && $STATUS != "" ]]; then
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echo "Domain ${vm.name} is already running or in an inconsistent state:"
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${pkgs.libvirt}/bin/virsh list --all
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exit 0
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fi
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echo "Creating network XML"
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NET_TMP_FILE="/tmp/network.xml"
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NETUUID="$(${pkgs.libvirt}/bin/virsh net-uuid 'default' || true)"
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(sed "s/UUID/$NETUUID/" '${networkXML}') > "$NET_TMP_FILE"
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echo "Defining and starting network"
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${pkgs.libvirt}/bin/virsh net-define "$NET_TMP_FILE"
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${pkgs.libvirt}/bin/virsh net-start 'default' || true
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VARS_FILE=${varsFile}
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if [ ! -f "$VARS_FILE" ]; then
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echo "Copying vars filej"
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cp /run/libvirt/nix-ovmf/OVMF_VARS.fd "$VARS_FILE"
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fi
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echo "Replacing USB device IDs in the XML"
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# Load the template contents into a tmp file
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TMP_FILE="/tmp/${vm.name}.xml"
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cat "${machineXML}" > "$TMP_FILE"
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# Set VM UUID
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UUID="$(${pkgs.libvirt}/bin/virsh domuuid '${vm.name}' || true)"
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sed -i "s/UUID/''${UUID}/" "$TMP_FILE"
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${if vm.handOverUSBDevices then ''
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# Hand over mouse
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USB_BUS=3
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USB_DEV=$(${pkgs.usbutils}/bin/lsusb | grep 046d:c52b | grep "Bus 00''${USB_BUS}" | cut -b 18)
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LINE_NUMBER=$(cat $TMP_FILE | grep -n -A 1 0xc52b | tail -n 1 | cut -b 1,2,3)
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sed -i "''${LINE_NUMBER}s/.*/<address bus=\"''${USB_BUS}\" device=\"''${USB_DEV}\" \/>/" "$TMP_FILE"
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# Hand over keyboard
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USB_BUS=$(${pkgs.usbutils}/bin/lsusb | grep 046d:c328 | cut -b 7)
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USB_DEV=$(${pkgs.usbutils}/bin/lsusb | grep 046d:c328 | cut -b 18)
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LINE_NUMBER=$(cat $TMP_FILE | grep -n -A 1 0xc328 | tail -n 1 | cut -b 1,2,3)
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sed -i "''${LINE_NUMBER}s/.*/<address bus=\"''${USB_BUS}\" device=\"''${USB_DEV}\" \/>/" "$TMP_FILE"
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'' else ""}
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# TODO: Set correct pci address for the GPU too
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# Setup looking glass shm file
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echo "Setting up looking glass shm file"
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${pkgs.coreutils-full}/bin/truncate -s 0 /dev/shm/looking-glass
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${pkgs.coreutils-full}/bin/dd if=/dev/zero of=/dev/shm/looking-glass bs=1M count=32
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# Load and start the xml definition
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echo "Loading and starting the VM XML definition"
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${pkgs.libvirt}/bin/virsh define "$TMP_FILE"
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${pkgs.libvirt}/bin/virsh start '${vm.name}'
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'';
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preStop =
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''
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${pkgs.libvirt}/bin/virsh shutdown '${vm.name}'
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let "timeout = $(date +%s) + 10"
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while [ "$(${pkgs.libvirt}/bin/virsh list --name | grep --count '^${vm.name}$')" -gt 0 ]; do
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if [ "$(date +%s)" -ge "$timeout" ]; then
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# Meh, we warned it...
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${pkgs.libvirt}/bin/virsh destroy '${vm.name}'
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else
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# The machine is still running, let's give it some time to shut down
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sleep 0.5
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fi
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done
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${pkgs.libvirt}/bin/virsh net-destroy 'default' || true
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'';
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}
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