vi and busybox

2026-09-13 02:24:42 +08:00 · 2026-07-29 10:56:30 +08:00
commit 86dbf7482f
47 changed files with 9647 additions and 0 deletions
@@ -0,0 +1,147 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
+target_dir="${repo_dir}/target/x86_64-unknown-uefi/debug"
+esp_dir="${repo_dir}/target/esp"
+disk_image="${repo_dir}/target/zeroos.raw"
+esp_image="${repo_dir}/target/zeroos-esp.fat"
+root_image="${repo_dir}/target/zeroos-root.ext4"
+root_dir="${repo_dir}/target/rootfs"
+ovmf_vars="${repo_dir}/target/OVMF_VARS.4m.fd"
+
+ovmf_code="/usr/share/edk2/x64/OVMF_CODE.4m.fd"
+ovmf_vars_template="/usr/share/edk2/x64/OVMF_VARS.4m.fd"
+qemu_display="${QEMU_DISPLAY:-gtk}"
+qemu_serial="${QEMU_SERIAL:-stdio}"
+qemu_extra_args="${QEMU_EXTRA_ARGS:--no-reboot}"
+qemu_accel="${QEMU_ACCEL:-auto}"
+qemu_debug_log="${QEMU_DEBUG_LOG:-${repo_dir}/target/qemu-debug.log}"
+zeroos_sh="${ZEROOS_SH:-/home/archzero/C++/busybox/busybox}"
+rebuild_disk="${ZEROOS_REBUILD_DISK:-0}"
+update_rootfs="${ZEROOS_UPDATE_ROOTFS:-0}"
+
+esp_start=2048
+esp_sectors=131072
+root_start=$((esp_start + esp_sectors))
+root_sectors=389120
+esp_size=$((esp_sectors * 512))
+root_size=$((root_sectors * 512))
+disk_size=$(((root_start + root_sectors + 2048) * 512))
+
+if [[ ! -r "${ovmf_code}" || ! -r "${ovmf_vars_template}" ]]; then
+    echo "OVMF firmware not found under /usr/share/edk2/x64." >&2
+    echo "Install the OVMF/edk2 package for your distribution." >&2
+    exit 1
+fi
+
+cargo build --manifest-path "${repo_dir}/Cargo.toml" --target x86_64-unknown-uefi --workspace
+
+mkdir -p "${esp_dir}/EFI/BOOT" "${esp_dir}/EFI/ZeroOS"
+cp "${target_dir}/zeroos-loader.efi" "${esp_dir}/EFI/BOOT/BOOTX64.EFI"
+cp "${target_dir}/ZeroOS.efi" "${esp_dir}/EFI/ZeroOS/ZeroOS.EFI"
+
+truncate -s "${esp_size}" "${esp_image}"
+mformat -i "${esp_image}" -F ::
+mmd -i "${esp_image}" ::/EFI ::/EFI/BOOT ::/EFI/ZeroOS
+mcopy -i "${esp_image}" "${esp_dir}/EFI/BOOT/BOOTX64.EFI" ::/EFI/BOOT/BOOTX64.EFI
+mcopy -i "${esp_image}" "${esp_dir}/EFI/ZeroOS/ZeroOS.EFI" ::/EFI/ZeroOS/ZeroOS.EFI
+
+if [[ ! -f "${disk_image}" ]]; then
+    rebuild_disk=1
+fi
+
+if [[ "${rebuild_disk}" == "1" || "${update_rootfs}" == "1" ]]; then
+    if [[ ! -r "${zeroos_sh}" ]]; then
+        echo "sh source is not readable: ${zeroos_sh}" >&2
+        echo "Set ZEROOS_SH=/path/to/static/busybox-or-sh." >&2
+        exit 1
+    fi
+
+    rm -rf "${root_dir}"
+    mkdir -p "${root_dir}/bin" "${root_dir}/usr/bin" "${root_dir}/dev" "${root_dir}/etc" "${root_dir}/tmp"
+    cp "${zeroos_sh}" "${root_dir}/usr/bin/busybox"
+    while IFS= read -r applet; do
+        [[ -n "${applet}" ]] || continue
+        if [[ "${applet}" != "busybox" ]]; then
+            ln -f "${root_dir}/usr/bin/busybox" "${root_dir}/usr/bin/${applet}"
+        fi
+        ln -f "${root_dir}/usr/bin/busybox" "${root_dir}/bin/${applet}"
+    done < <("${zeroos_sh}" --list)
+    ln -f "${root_dir}/usr/bin/busybox" "${root_dir}/usr/bin/bash"
+    ln -f "${root_dir}/usr/bin/busybox" "${root_dir}/bin/bash"
+
+    truncate -s "${root_size}" "${root_image}"
+    mkfs.ext4 -q -F -b 4096 -O '^64bit,^metadata_csum,^has_journal,^dir_index' -d "${root_dir}" "${root_image}"
+fi
+
+if [[ "${rebuild_disk}" == "1" ]]; then
+    truncate -s "${disk_size}" "${disk_image}"
+    sgdisk --clear \
+        --new=1:${esp_start}:$((esp_start + esp_sectors - 1)) \
+        --typecode=1:ef00 \
+        --change-name=1:ZeroOSESP \
+        --new=2:${root_start}:$((root_start + root_sectors - 1)) \
+        --typecode=2:8300 \
+        --change-name=2:ZeroOSRoot \
+        "${disk_image}" >/dev/null
+    dd if="${root_image}" of="${disk_image}" bs=512 seek="${root_start}" conv=notrunc status=none
+elif [[ "${update_rootfs}" == "1" ]]; then
+    dd if="${root_image}" of="${disk_image}" bs=512 seek="${root_start}" conv=notrunc status=none
+fi
+
+dd if="${esp_image}" of="${disk_image}" bs=512 seek="${esp_start}" conv=notrunc status=none
+
+if [[ ! -f "${ovmf_vars}" ]]; then
+    cp "${ovmf_vars_template}" "${ovmf_vars}"
+fi
+
+extra_args=()
+if [[ -n "${qemu_extra_args}" ]]; then
+    read -r -a extra_args <<< "${qemu_extra_args}"
+fi
+
+debug_args=()
+if [[ "${QEMU_DEBUG:-1}" != "0" ]]; then
+    debug_args=(-d int,cpu_reset -D "${qemu_debug_log}")
+    rm -f "${qemu_debug_log}"
+fi
+
+accel_args=()
+case "${qemu_accel}" in
+    auto)
+        if [[ -r /dev/kvm && -w /dev/kvm ]]; then
+            accel_args=(-enable-kvm -cpu host)
+        fi
+        ;;
+    kvm)
+        accel_args=(-enable-kvm -cpu host)
+        ;;
+    tcg|off|none)
+        ;;
+    *)
+        echo "invalid QEMU_ACCEL: ${qemu_accel}" >&2
+        echo "Use QEMU_ACCEL=auto, kvm, or tcg." >&2
+        exit 1
+        ;;
+esac
+
+qemu-system-x86_64 \
+    -machine q35 \
+    "${accel_args[@]}" \
+    -m 256M \
+    -drive "if=pflash,format=raw,readonly=on,file=${ovmf_code}" \
+    -drive "if=pflash,format=raw,file=${ovmf_vars}" \
+    -device "ich9-ahci,id=ahci0" \
+    -drive "id=zeroosdisk,if=none,format=raw,file=${disk_image}" \
+    -device "ide-hd,drive=zeroosdisk,bus=ahci0.0" \
+    -serial "${qemu_serial}" \
+    -display "${qemu_display}" \
+    "${debug_args[@]}" \
+    "${extra_args[@]}"
+status=$?
+echo "qemu exited with status ${status}" >&2
+if [[ -f "${qemu_debug_log}" ]]; then
+    echo "qemu debug log: ${qemu_debug_log}" >&2
+fi
+exit "${status}"