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introduce image data copy polyfill to allow builds on systems without image mounts

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This commit is contained in:
Alex Zenla
2025-10-01 21:51:58 -07:00
parent 4119c3a3b5
commit b8e1d11bed
5 changed files with 48 additions and 16 deletions
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46
hack/build.sh
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@@ -25,9 +25,37 @@ fi
mkdir -p "${FINAL_DIR}"
if [ "${SKIP_KERNEL_BUILD}" != "1" ] || [ "${SKIP_VM_BUILD}" != "1" ] || [ "${SKIP_SPROUT_BUILD}" != "1" ]; then
docker build -t "${DOCKER_PREFIX}/sprout-utils-copy:${DOCKER_TAG}" -f hack/utils/Dockerfile.copy hack
docker build -t "${DOCKER_PREFIX}/sprout-utils-copy-direct:${DOCKER_TAG}" -f hack/utils/Dockerfile.copy-direct hack
fi
copy_from_image_direct() {
IMAGE="${1}"
SOURCE="${2}"
TARGET="${3}"
docker run --rm -i \
--mount="type=image,source=${IMAGE},target=/image" \
"${DOCKER_PREFIX}/sprout-utils-copy-direct:${DOCKER_TAG}" cat "/image/${SOURCE}" >"${TARGET}" 2>/dev/null
}
copy_from_image_polyfill() {
IMAGE="${1}"
SOURCE="${2}"
TARGET="${3}"
docker build -t "${IMAGE}-copy-polyfill:${DOCKER_TAG}" --build-arg "TARGET_IMAGE=${IMAGE}:${DOCKER_TAG}" \
-f hack/utils/Dockerfile.copy-polyfill hack
# note: the -w '//' is a workaround for Git Bash where / is magically rewritten.
docker run --rm -i -w '//' "${IMAGE}-copy-polyfill:${DOCKER_TAG}" cat "image/${SOURCE}" >"${TARGET}"
}
copy_from_image() {
if ! copy_from_image_direct "${@}" 2>/dev/null; then
echo "[warn] image mounts not supported, falling back to polyfill"
copy_from_image_polyfill "${@}"
fi
}
if [ "${SKIP_KERNEL_BUILD}" != "1" ]; then
echo "[kernel build] ${TARGET_ARCH} ${RUST_PROFILE}"
docker build --platform="${DOCKER_TARGET}" -t "${DOCKER_PREFIX}/sprout-kernel-${TARGET_ARCH}:${DOCKER_TAG}" -f kernel/Dockerfile kernel
@@ -37,26 +65,20 @@ if [ "${SKIP_KERNEL_BUILD}" != "1" ]; then
build kernel
fi
docker run --rm -i \
--mount="type=image,source=${DOCKER_PREFIX}/sprout-kernel-${TARGET_ARCH}:${DOCKER_TAG},target=/image" \
"${DOCKER_PREFIX}/sprout-utils-copy:${DOCKER_TAG}" cat /image/kernel.efi >"${FINAL_DIR}/kernel.efi"
copy_from_image "${DOCKER_PREFIX}/sprout-kernel-${TARGET_ARCH}" "kernel.efi" "${FINAL_DIR}/kernel.efi"
cp hack/configs/kernel.sprout.toml "${FINAL_DIR}/sprout.toml"
fi
if [ "${SKIP_VM_BUILD}" != "1" ]; then
echo "[vm build] ${TARGET_ARCH} ${RUST_PROFILE}"
docker build --platform="${DOCKER_TARGET}" -t "${DOCKER_PREFIX}/sprout-ovmf-${TARGET_ARCH}:${DOCKER_TAG}" -f vm/Dockerfile.ovmf "${FINAL_DIR}"
docker run --rm -i \
--mount="type=image,source=${DOCKER_PREFIX}/sprout-ovmf-${TARGET_ARCH}:${DOCKER_TAG},target=/image" \
"${DOCKER_PREFIX}/sprout-utils-copy:${DOCKER_TAG}" cat /image/ovmf.fd >"${FINAL_DIR}/ovmf.fd"
copy_from_image "${DOCKER_PREFIX}/sprout-ovmf-${TARGET_ARCH}" "ovmf.fd" "${FINAL_DIR}/ovmf.fd"
fi
if [ "${SKIP_SPROUT_BUILD}" != "1" ]; then
echo "[sprout build] ${TARGET_ARCH} ${RUST_PROFILE}"
docker build --platform="${DOCKER_TARGET}" -t "${DOCKER_PREFIX}/sprout-${TARGET_ARCH}:${DOCKER_TAG}" --build-arg="RUST_TARGET_SUBDIR=${RUST_TARGET_SUBDIR}" -f Dockerfile .
docker run --rm -i \
--mount="type=image,source=${DOCKER_PREFIX}/sprout-${TARGET_ARCH}:${DOCKER_TAG},target=/image" \
"${DOCKER_PREFIX}/sprout-utils-copy:${DOCKER_TAG}" cat /image/sprout.efi >"${FINAL_DIR}/sprout.efi"
copy_from_image "${DOCKER_PREFIX}/sprout-${TARGET_ARCH}" "sprout.efi" "${FINAL_DIR}/sprout.efi"
mkdir -p "${FINAL_DIR}/efi/EFI/BOOT"
cp "${FINAL_DIR}/sprout.efi" "${FINAL_DIR}/efi/EFI/BOOT/${EFI_NAME}.EFI"
if [ -f "${FINAL_DIR}/kernel.efi" ]; then
@@ -68,7 +90,5 @@ fi
if [ "${SKIP_BOOT_BUILD}" != "1" ]; then
echo "[boot build] ${TARGET_ARCH} ${RUST_PROFILE}"
docker build --platform="${DOCKER_TARGET}" -t "${DOCKER_PREFIX}/sprout-boot-${TARGET_ARCH}:${DOCKER_TAG}" --build-arg "EFI_NAME=${EFI_NAME}" -f boot/Dockerfile "${FINAL_DIR}"
docker run --rm -i \
--mount="type=image,source=${DOCKER_PREFIX}/sprout-boot-${TARGET_ARCH}:${DOCKER_TAG},target=/image" \
"${DOCKER_PREFIX}/sprout-utils-copy:${DOCKER_TAG}" cat /image/sprout.img >"${FINAL_DIR}/sprout.img"
copy_from_image "${DOCKER_PREFIX}/sprout-boot-${TARGET_ARCH}" "sprout.img" "${FINAL_DIR}/sprout.img"
fi