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Krzysztof kuhy Rudnicki
694c013b6b
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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
60 lines
1.9 KiB
Bash
Executable File
60 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# ============================================================================
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# vmbox installer: installs host dependencies and links `vm` onto PATH.
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#
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# Deliberately NOT run as root: vmbox is designed to need no root at all
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# (user-mode + multicast networking, qcow2 overlays, no bridge, no libvirt).
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# Only the pacman step escalates, and only when something is missing.
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# ============================================================================
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
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readonly SCRIPT_DIR
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readonly LINK_DIR="${LINK_DIR:-$HOME/.local/bin}"
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# xorriso ships in libisoburn -- there is no package named "xorriso".
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readonly -a PACKAGES=(qemu-base libisoburn openssh python jq edk2-ovmf)
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if [[ $EUID -eq 0 ]]; then
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echo "Do not run install.sh as root: it links into \$HOME and would" >&2
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echo "create root-owned files there. It escalates on its own if needed." >&2
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exit 1
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fi
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echo "==> Checking host dependencies ..."
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missing=()
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for pkg in "${PACKAGES[@]}"; do
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pacman -Qq "$pkg" >/dev/null 2>&1 || missing+=("$pkg")
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done
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if (( ${#missing[@]} )); then
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echo "==> Installing: ${missing[*]}"
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sudo pacman -S --needed --noconfirm "${missing[@]}"
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else
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echo " all present: ${PACKAGES[*]}"
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fi
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# KVM is what makes this usable rather than glacial; a missing /dev/kvm is a
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# hard stop, not a warning, because the fallback is ~20x slower.
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[[ -c /dev/kvm ]] || {
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echo "error: /dev/kvm missing -- enable virtualization (SVM/VT-x) in firmware" >&2
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exit 1
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}
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[[ -r /dev/kvm && -w /dev/kvm ]] || {
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echo "error: /dev/kvm not read/writable by $USER -- add yourself to the 'kvm' group" >&2
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exit 1
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}
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echo "==> Linking vm -> $LINK_DIR/vm"
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install -d -m 755 "$LINK_DIR"
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ln -sfn "$SCRIPT_DIR/bin/vm" "$LINK_DIR/vm"
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case ":$PATH:" in
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*":$LINK_DIR:"*) ;;
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*) echo " note: $LINK_DIR is not on your PATH" ;;
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esac
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echo
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echo "Installed. Next: vm build (builds the golden image, once)"
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