vm-setup.sh

#!/usr/bin/bash

echo "READ vm-config.txt AFTER reboot, Continue?"
select yn in Ok No; do
    case $yn in
    Ok)
        break
        ;;
    No)
        exit
        ;;
    esac
done

sudo pacman -S --needed go linux-zen-headers dkms cmake qemu-base qemu-chardev-spice qemu-audio-spice qemu-hw-display-qxl virt-manager dnsmasq iptables-nft net-tools || exit

echo "Install looking glass?"
select lg in Yes No; do
    case "$lg" in
    Yes)
        if [ ! -d ~/Clone/looking-glass ]; then
            curl https://looking-glass.io/artifact/bleeding/source -o looking-glass.tar.gz || exit
            mkdir -p ~/Clone/looking-glass
            tar -xf looking-glass.tar.gz --strip-component=1 -C ~/Clone/looking-glass
            rm looking-glass.tar.gz
        fi
        sudo cp update_virbr /usr/bin
        cd ~/Clone/looking-glass
        mkdir client/build
        cd client/build
        cmake ../
        make
        sudo make install
        cd ~/Clone/looking-glass/module
        sudo dkms install "."
        mkdir -p ~/.config/libvirt
        echo -e "options kvmfr static_size_mb=128" | sudo tee /etc/modprobe.d/kvmfr.conf
        echo -e "kvmfr" | sudo tee /etc/modules-load.d/kvmfr.conf
        echo -e "SUBSYSTEM==\"kvmfr\", OWNER=\"$(whoami)\", GROUP=\"kvm\", MODE=\"0660\"" | sudo tee /etc/udev/rules.d/99-kvmfr.rules
        echo -e "[Desktop Entry]\nName=Windows\nIcon=windows\nType=Application\nExec=/usr/bin/bash -c 'update_virbr; virsh start win11; looking-glass-client'" >~/.local/share/applications/windows.desktop
        echo -e "uri_default = \"qemu:///system\"" >~/.config/libvirt/libvirt.conf
        mkdir -p ~/.config/looking-glass
        echo -e "[win]\nfullScreen = yes\nnoScreensaver = yes\n[input]\ncaptureOnFocus = yes\n[spice]\ncaptureOnStart = yes" >~/.config/looking-glass/client.ini
        break
        ;;
    No)
        break
        ;;
    esac
done

echo "Setup Gpu Passthrough?"
select gp in Yes No; do
    case "$gp" in
    Yes)
        if [ ! -d ~/Clone/quickpassthrough ]; then
            mkdir -p ~/Clone/quickpassthrough
        fi
        git clone https://github.com/HikariKnight/quickpassthrough.git ~/Clone/quickpassthrough
        cd ~/Clone/quickpassthrough || exit
        go mod download
        CGO_ENABLED=0 go build -ldflags="-X github.com/HikariKnight/quickpassthrough/internal/version.Version=$(git rev-parse --short HEAD)" -o quickpassthrough cmd/main.go
        ./quickpassthrough
        cat <<'EOF' >gpu-pass
#!/usr/bin/bash

if [ $(lspci -nnk | grep -A 3 -i 'vga.*nvidia' | grep 'Kernel driver in use:' | awk '{print $5}') = "vfio-pci" ]; then
    read -p "Vfio detected. Switch to Nvidia? [y/n]: " confirm && [[ $confirm == [yY] || $confirm == [yY][eE][sS] ]] || exit 1
    sudo cp -R $HOME/Clone/quickpassthrough/backup/etc /
else
    read -p "Nvidia driver detected. Switch to Vfio? [y/n]: " confirm && [[ $confirm == [yY] || $confirm == [yY][eE][sS] ]] || exit 1
    sudo cp -R $HOME/Clone/quickpassthrough/config/etc /
fi

sudo mkinitcpio -P
grubu
EOF
        chmod +x gpu-pass
        sudo mv gpu-pass /usr/bin/
        break
        ;;
    No)
        break
        ;;
    esac
done

if [ ! -d /var/lib/libvirt ]; then
    sudo mkdir -p /var/lib/libvirt
fi
device=$(findmnt -no SOURCE / | sed 's/\[.*\]//')
if [ $(findmnt -n -o FSTYPE -T /) = btrfs ]; then
    cd /mnt/defvol
    if ! sudo btrfs subvolume list /mnt/defvol | grep -q "@vm"; then
        sudo btrfs subvolume create @vm
    fi
    if ! mountpoint -q /var/lib/libvirt; then
        sudo mount -o subvol=@vm "$device" /var/lib/libvirt
        sudo chattr +C /var/lib/libvirt
    fi
    if ! grep -q "/var/lib/libvirt" /etc/fstab; then
        UUID=$(grep "UUID=" /etc/fstab | grep "btrfs" | head -n 1 | awk '{print $1}' | cut -d'=' -f2)
        MOUNT_OPTIONS=$(grep "UUID=" /etc/fstab | grep "btrfs" | head -n 1 | awk '{print $4}' | sed 's/,\?subvol=[^,]*//')
        NEW_ENTRY="UUID=$UUID\t/var/lib/libvirt\tbtrfs\t$MOUNT_OPTIONS,subvol=@vm\t0 0"
        echo -e "\n#$device " | sudo tee -a /etc/fstab
        echo -e "$NEW_ENTRY" | sudo tee -a /etc/fstab
        echo "New mount point added to fstab."
        echo "Please check /etc/fstab to ensure everything is correct."
    fi
fi

echo -e "unix_sock_group = \"libvirt\"\nunix_sock_rw_perms = \"0770\"" | sudo tee /etc/libvirt/libvirtd.conf
sudo mkdir -p /etc/libvirt/hooks/
echo -e "#!/usr/bin/bash
command=\$2

if [ \"\$command\" = \"started\" ]; then
    systemctl set-property --runtime -- system.slice AllowedCPUs=0,1,8,9
    systemctl set-property --runtime -- user.slice AllowedCPUs=0,1,8,9
    systemctl set-property --runtime -- init.scope AllowedCPUs=0,1,8,9
elif [ \"\$command\" = \"release\" ]; then
    systemctl set-property --runtime -- system.slice AllowedCPUs=0-15
    systemctl set-property --runtime -- user.slice AllowedCPUs=0-15
    systemctl set-property --runtime -- init.scope AllowedCPUs=0-15
fi

arp -i wlp46s0 -Ds 192.168.1.136 wlp46s0 pub
" | sudo tee /etc/libvirt/hooks/qemu

sudo chmod +x /etc/libvirt/hooks/qemu
sudo chown $USER:root /etc/libvirt/hooks/qemu

sudo usermod -a -G libvirt $(whoami)
sudo systemctl enable libvirtd

sudo pacman -Runs go cmake
sudo rm -rf ~/go

echo "Edit the file /etc/libvirt/qemu.conf and uncomment the cgroup_device_acl block, adding /dev/kvmfr0"
read -p "Press enter to open /etc/libvirt/qemu.conf..."
sudoedit /etc/libvirt/qemu.conf
echo "Reboot to complete installation"
select yn in Reboot Wait; do
    case $yn in
    Reboot)
        break
        ;;
    Wait) ;;
    esac
done
sudo reboot