refactor: many changes

scripts/run-vm

@@ -0,0 +1,145 @@
+#!/usr/bin/env bash
+set -Euo pipefail
+
+# -----------------------------------------------------------------------------
+# This script sets up and launches a QEMU virtual machine with OVMF (UEFI).
+# It checks for the necessary files, creates directories/images as needed,
+# and provides clear, user-friendly output along the way.
+# Usage:
+#   ./run-vm.sh [install]
+#   - Pass "install" to attach the ISO as a CD-ROM for installation.
+# -----------------------------------------------------------------------------
+
+# Paths to OVMF firmware (pflash)
+OVMF_CODE="/run/libvirt/nix-ovmf/OVMF_CODE.fd"
+OVMF_VARS_DEFAULT="/run/libvirt/nix-ovmf/OVMF_VARS.fd"
+
+# Determine where this script lives and compute related paths
+SCRIPT_DIR=$(dirname "$(readlink -f "$0")")
+TARGET_DIR=$(readlink -f "$SCRIPT_DIR/../.vm")
+OVMF_VARS_PATH=$(readlink -f "$SCRIPT_DIR/../.vm/OVMF_VARS-myvm.fd")
+IMG_PATH=$(readlink -f "$SCRIPT_DIR/../.vm/disk.img")
+ISO_DIR=$(readlink -f "$SCRIPT_DIR/../iso/result/iso")
+
+echo
+echo "============================================================"
+echo "          QEMU VM Setup and Launch Script"
+echo "============================================================"
+echo
+
+# -----------------------------------------------------------------------------
+# 1. Locate the ISO file
+# -----------------------------------------------------------------------------
+echo "[1/6] Locating ISO file in: $ISO_DIR"
+ISO_FILE=$(ls "$ISO_DIR"/*.iso 2>/dev/null | head -n 1 || true)
+
+if [ -z "$ISO_FILE" ]; then
+  echo "  ❌  Error: No ISO found in $ISO_DIR"
+  echo "      Please verify the directory and try again."
+  exit 1
+else
+  echo "  ✅  Found ISO: $ISO_FILE"
+fi
+echo
+
+# -----------------------------------------------------------------------------
+# 2. Ensure target VM directory exists
+# -----------------------------------------------------------------------------
+echo "[2/6] Checking VM target directory: $TARGET_DIR"
+if [ ! -d "$TARGET_DIR" ]; then
+  echo "  📁  Directory does not exist; creating: $TARGET_DIR"
+  mkdir -p "$TARGET_DIR"
+  echo "  ✅  Directory created."
+else
+  echo "  ✅  Directory already exists."
+fi
+echo
+
+# -----------------------------------------------------------------------------
+# 3. Prepare OVMF variables file (OVMF_VARS-myvm.fd)
+# -----------------------------------------------------------------------------
+echo "[3/6] Preparing OVMF variables file"
+if [ ! -f "$OVMF_VARS_PATH" ]; then
+  echo "  Copying default vars to: $OVMF_VARS_PATH"
+  cp "$OVMF_VARS_DEFAULT" "$OVMF_VARS_PATH"
+  chmod 600 "$OVMF_VARS_PATH"
+  echo "  ✅  OVMF_VARS-myvm.fd created and permissions set."
+else
+  echo "  ✅  OVMF_VARS-myvm.fd already exists."
+fi
+echo
+
+# -----------------------------------------------------------------------------
+# 4. Create QCOW2 disk image if missing
+# -----------------------------------------------------------------------------
+echo "[4/6] Ensuring QCOW2 disk image exists at: $IMG_PATH"
+if [ ! -f "$IMG_PATH" ]; then
+  echo "  💾  Creating a new 64G QCOW2 image..."
+  qemu-img create -f qcow2 "$IMG_PATH" "64G"
+  echo "  ✅  Disk image created: $IMG_PATH (64G)"
+else
+  echo "  ✅  Disk image already exists."
+fi
+echo
+
+# -----------------------------------------------------------------------------
+# 5. Parse arguments (install mode or normal boot)
+# -----------------------------------------------------------------------------
+INSTALL_MODE=0
+if [ "${1-}" = "install" ]; then
+  INSTALL_MODE=1
+fi
+
+if [ "$INSTALL_MODE" -eq 1 ]; then
+  echo "[5/6] Install mode enabled: CD-ROM will be attached"
+  CDROM_OPTS="-drive file=\"$ISO_FILE\",format=raw,if=none,media=cdrom,id=cd1,readonly=on -device ahci,id=ahci0 -device ide-cd,bus=ahci0.0,drive=cd1,bootindex=1"
+else
+  echo "[5/6] Normal boot mode: No CD-ROM attached"
+  CDROM_OPTS=""
+fi
+echo
+
+# -----------------------------------------------------------------------------
+# 6. Launch QEMU
+# -----------------------------------------------------------------------------
+echo "[6/6] Launching QEMU VM now..."
+echo "------------------------------------------------------------"
+echo "  • Machine: q35, KVM acceleration"
+echo "  • Memory: 4096 MB"
+echo "  • CPU: host"
+echo "  • OVMF_CODE (readonly): $OVMF_CODE"
+echo "  • OVMF_VARS:           $OVMF_VARS_PATH"
+echo "  • Disk image:          $IMG_PATH"
+if [ "$INSTALL_MODE" -eq 1 ]; then
+  echo "  • CD-ROM (ISO):        $ISO_FILE"
+fi
+echo "  • Networking: user-mode with hostfwd ssh (host:2222 → guest:22)"
+echo "  • Connect to VM via: ssh -p 2222 root@localhost"
+echo "  • VGA: virtio"
+echo "------------------------------------------------------------"
+echo
+
+# Construct network options
+NET_OPTS="-netdev user,id=net0,hostfwd=tcp::2222-:22 -device e1000,netdev=net0"
+
+# Run QEMU using eval to allow variable expansion in CDROM_OPTS
+eval qemu-system-x86_64 \
+  -machine type=q35,accel=kvm \
+  -m 4096 \
+  -cpu host \
+  \
+  -drive if=pflash,format=raw,readonly=on,file="$OVMF_CODE" \
+  \
+  -drive if=pflash,format=raw,file="$OVMF_VARS_PATH" \
+  \
+  -drive file="$IMG_PATH",format=qcow2 \
+  \
+  $CDROM_OPTS \
+  \
+  $NET_OPTS \
+  -vga virtio
+
+echo
+echo "============================================================"
+echo "                 QEMU VM has exited"
+echo "============================================================"