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12345678910111213141516171819202122232425262728#!/usr/bin/env bashset -euo pipefail
# Downloads a Firecracker-compatible vmlinux kernel into ./assets.
ASSETS_DIR="${ASSETS_DIR:-assets}"KERNEL_VERSION="${KERNEL_VERSION:-5.10.225}"FC_CI_VERSION="${FC_CI_VERSION:-v1.11}"
ARCH="$(uname -m)"case "${ARCH}" in x86_64|aarch64) ;; *) echo "unsupported arch: ${ARCH}" >&2; exit 1 ;;esac
mkdir -p "${ASSETS_DIR}"KERNEL_PATH="${ASSETS_DIR}/vmlinux"
if [[ -f "${KERNEL_PATH}" ]]; then echo "Kernel already exists: ${KERNEL_PATH}" exit 0fi
URL="https://s3.amazonaws.com/spec.ccfc.min/firecracker-ci/${FC_CI_VERSION}/${ARCH}/vmlinux-${KERNEL_VERSION}"echo "Downloading kernel from ${URL}..."curl -fsSL -o "${KERNEL_PATH}" "${URL}"echo "Kernel: ${KERNEL_PATH}"