commit 26288476766a7834e2c9aebeb868323d41a4adfa
Author: Sebastian Hugentobler <sebastian@vanwa.ch>
Date:   Thu Jun 22 09:50:54 2023 +0200

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..765efc1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*~
+.DS_Store
+*.pkg.tar.zst
+*.pkg.tar.zst.sig
diff --git a/PKGBUILD b/PKGBUILD
new file mode 100644
index 0000000..c790860
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,20 @@
+# Maintainer: Sebastian Hugentobler <shu@vanwa.ch>
+
+pkgname=vm
+pkgver=0.1.0
+pkgrel=1
+pkgdesc="Run qemu vms from configurations."
+arch=("any")
+url="https://code.vanwa.ch"
+license=('MIT')
+depends=("qemu-full" "swtpm")
+source=(
+  "vm"
+)
+sha256sums=("1a6ee0ee645689953226154c3d74d23e49f1b6a5609c3ed9b344c1f2c278f0c5")
+
+package() {
+  cd "$srcdir/"
+
+  install -Dm 755 vm "$pkgdir/usr/bin/vm"
+}
diff --git a/vm b/vm
new file mode 100755
index 0000000..3e2c852
--- /dev/null
+++ b/vm
@@ -0,0 +1,157 @@
+#!/usr/bin/env sh
+set -o errexit
+
+: "${XDG_CONFIG_HOME:="$HOME/.config"}"
+
+config_dir="$XDG_CONFIG_HOME/vm/"
+tmpdir="${TMPDIR:-/tmp}"
+
+check_mandatory_keys() {
+  mandatory_keys="emu_type memory cpu_cores disk"
+  for k in $mandatory_keys; do
+    if eval '[ -z "${'$k'+1}" ]'; then
+      echo "key \"$k\" is mandatory"
+      exit 1
+    fi
+  done
+}
+
+read_config() {
+  if [ -f "$config_file" ]; then
+    # shellcheck disable=1090
+    . "$config_file"
+    check_mandatory_keys
+  else
+    echo "$config_file not found"
+    exit 1
+  fi
+}
+
+display_help() {
+  echo "Usage: $0 [option...] " >&2
+  echo
+  echo "   -c,   configuration name (reads the config of a file \"name\" in the folder \"$config_dir\")"
+  echo "   -f,   configuration file (overrides any set \"-c\" option)"
+  echo "   -h,   display this help and exit"
+  echo
+  echo "configuration keys:"
+  echo "emu_type: which qemu emulator to use (for example \"x86_64\" would use \"qemu-system-x86_64\")"
+  echo "tpm: directory of the software tpm (created automatically if specified)"
+  echo "memory: amount of ram for the vm"
+  echo "cpu_cores: amount of cpu cores for the vm"
+  echo "efi_files_root: base path to efi files (using \"\${efi_file_root}_OVMF_CODE.fd and \${efi_file_root}_OVMF_VARS.fd\")"
+  echo "disk: path to vm disk image (gets created as cow if it does not exist)"
+  echo "disk_size: how big the created disk is"
+  echo "shared_dirs: pipe separated directories that will be shared from the host to the guest"
+  echo "port_forwards: port forwards between guest and host (format is protocol:host_port:guest_port)"
+  echo "cdrom: cd image that will be mounted into the guest"
+}
+
+parse_args() {
+  while getopts ":hc:f:" opt; do
+    case $opt in
+    h)
+      display_help
+      exit 0
+      ;;
+    c)
+      config_file="$config_dir/$OPTARG"
+      ;;
+    f)
+      config_file="$OPTARG"
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      display_help
+      exit 1
+      ;;
+    :)
+      echo "Option -$OPTARG requires an argument." >&2
+      display_help
+      exit 1
+      ;;
+    esac
+  done
+}
+
+parse_args "$@"
+read_config
+
+if [ -n "$tpm" ]; then
+  tpm_dir="$tmpdir/$tpm"
+  tpm_socket="$tpm_dir/swtpm-sock"
+  mkdir -p "$tpm_dir"
+  swtpm socket --tpmstate dir="$tpm_dir" --ctrl type=unixio,path="$tpm_socket" --log level=20 --tpm2 --daemon
+  tpm_args="-tpmdev emulator,id=tpm0,chardev=chrtpm -device tpm-tis,tpmdev=tpm0 -chardev socket,id=chrtpm,path=$tpm_socket"
+fi
+
+if [ -n "$efi_files_root" ]; then
+  efi_code_path="${efi_files_root}_OVMF_CODE.fd"
+  efi_vars_path="${efi_files_root}_OVMF_VARS.fd"
+
+  if [ ! -f "$efi_code_path" ]; then
+    echo "$efi_code_path does not exist"
+    exit 1
+  fi
+
+  if [ ! -f "$efi_vars_path" ]; then
+    echo "$efi_vars_path does not exist"
+    exit 1
+  fi
+
+  efi_args="-drive if=pflash,format=raw,readonly=on,file=$efi_code_path -drive if=pflash,format=raw,file=$efi_vars_path"
+fi
+
+if [ -n "$cdrom" ]; then
+  if [ ! -f "$cdrom" ]; then
+    echo "$cdrom does not exist"
+    exit 1
+  fi
+  cdrom_args="-cdrom $cdrom"
+fi
+
+if [ ! -f "$disk" ]; then
+  qemu-img create -f qcow2 "$disk" "$disk_size"
+fi
+
+oldIFS=$IFS
+IFS='|'
+for dir in $shared_dirs; do
+  shared_dirs_args="$shared_dirs_args -net nic -net user,smb=$dir"
+done
+IFS=$oldIFS
+
+oldIFS=$IFS
+IFS='|'
+for port_forward in $port_forwards; do
+  IFS=':' read -r protocol host_port guest_port <<_EOF_
+$port_forward
+_EOF_
+  port_forward_args="$port_forward_args -nic user,hostfwd=$protocol::$host_port-:$guest_port"
+done
+IFS=$oldIFS
+
+# shellcheck disable=2086,2154
+qemu-system-$emu_type \
+  -enable-kvm \
+  -machine q35,smm=on,accel=kvm \
+  -global ICH9-LPC.disable_s3=1 \
+  -device intel-iommu \
+  -m "$memory" \
+  -smp "$cpu_cores" \
+  -cpu host \
+  -vga qxl \
+  -device virtio-serial-pci \
+  -device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0 \
+  -device intel-hda \
+  -device hda-duplex \
+  -chardev spicevmc,id=spicechannel0,name=vdagent \
+  -spice gl=on,unix=on,addr=/run/user/1000/spice.sock,disable-ticketing=on \
+  -drive file="$disk",index=0,media=disk,if=virtio \
+  -full-screen \
+  -boot menu=off \
+  -display spice-app \
+  -device nec-usb-xhci,id=usb \
+  -chardev spicevmc,name=usbredir,id=usbredirchardev1 \
+  -device usb-redir,chardev=usbredirchardev1,id=usbredirdev1 \
+  -device qemu-xhci,id=xhci $tpm_args $efi_args $shared_dirs_args $port_forward_args $cdrom_args