mirror of
https://github.com/kata-containers/kata-containers.git
synced 2026-05-17 04:52:23 +00:00
a5a5f38630
Fix shellcheck warnings and notes identified by running shellcheck --severity=style. Signed-off-by: Fabiano Fidêncio <ffidencio@nvidia.com>
95 lines
2.6 KiB
Bash
Executable File
95 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
#
|
|
# Copyright (c) 2018 HyperHQ Inc.
|
|
#
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
[[ -z "${DEBUG}" ]] || set -x
|
|
|
|
set -o errexit
|
|
# set -o nounset
|
|
set -o pipefail
|
|
|
|
script_name="${0##*/}"
|
|
script_dir="$(dirname "$(readlink -f "$0")")"
|
|
|
|
lib_file="${script_dir}/../scripts/lib.sh"
|
|
# shellcheck source=../scripts/lib.sh
|
|
# shellcheck disable=SC1091
|
|
source "${lib_file}"
|
|
|
|
INITRD_IMAGE="${INITRD_IMAGE:-kata-containers-initrd.img}"
|
|
AGENT_BIN=${AGENT_BIN:-kata-agent}
|
|
AGENT_INIT=${AGENT_INIT:-no}
|
|
|
|
# shellcheck disable=SC2120
|
|
usage()
|
|
{
|
|
error="${1:-0}"
|
|
cat <<EOF
|
|
Usage: ${script_name} [options] <rootfs-dir>
|
|
This script creates a Kata Containers initrd image file based on the
|
|
<rootfs-dir> directory.
|
|
|
|
Options:
|
|
-h Show help
|
|
-o Set the path where the generated image file is stored.
|
|
DEFAULT: the path stored in the environment variable INITRD_IMAGE
|
|
|
|
Extra environment variables:
|
|
AGENT_BIN: use it to change the expected agent binary name
|
|
DEFAULT: kata-agent
|
|
AGENT_INIT: use kata agent as init process
|
|
DEFAULT: no
|
|
EOF
|
|
exit "${error}"
|
|
}
|
|
|
|
while getopts "ho:" opt
|
|
do
|
|
case "${opt}" in
|
|
h) usage ;;
|
|
o) INITRD_IMAGE="${OPTARG}" ;;
|
|
*) usage 1 ;;
|
|
esac
|
|
done
|
|
|
|
shift $(( OPTIND - 1 ))
|
|
|
|
ROOTFS="$1"
|
|
|
|
|
|
# shellcheck disable=SC2119
|
|
[[ -n "${ROOTFS}" ]] || usage
|
|
[[ -d "${ROOTFS}" ]] || die "${ROOTFS} is not a directory"
|
|
|
|
ROOTFS=$(readlink -f "${ROOTFS}")
|
|
IMAGE_DIR=$(dirname "${INITRD_IMAGE}")
|
|
IMAGE_DIR=$(readlink -f "${IMAGE_DIR}")
|
|
IMAGE_NAME=$(basename "${INITRD_IMAGE}")
|
|
|
|
# The kata rootfs image expects init to be installed
|
|
init="${ROOTFS}/sbin/init"
|
|
[[ -x "${init}" ]] || [[ -L "${init}" ]] || die "/sbin/init is not installed in ${ROOTFS}"
|
|
OK "init is installed"
|
|
[[ "${AGENT_INIT}" == "yes" ]] || [[ -x "${ROOTFS}/usr/bin/${AGENT_BIN}" ]] || \
|
|
die "/usr/bin/${AGENT_BIN} is not installed in ${ROOTFS}
|
|
use AGENT_BIN env variable to change the expected agent binary name"
|
|
OK "Agent is installed"
|
|
|
|
# initramfs expects /init, create symlink only if ${ROOTFS}/init does not exist
|
|
# Init may be provided by other packages, e.g. systemd or GPU initrd/rootfs
|
|
if [[ ! -x "${ROOTFS}/init" ]] && [[ ! -L "${ROOTFS}/init" ]]; then
|
|
# ATTN: In some instances, /init is not following two or more levels of symlinks
|
|
# i.e. (/init to /sbin/init to /lib/systemd/systemd)
|
|
# Setting /init directly to /lib/systemd/systemd when AGENT_INIT is disabled
|
|
if [[ "${AGENT_INIT}" = "yes" ]]; then
|
|
sudo ln -sf /sbin/init "${ROOTFS}/init"
|
|
else
|
|
sudo ln -sf /lib/systemd/systemd "${ROOTFS}/init"
|
|
fi
|
|
fi
|
|
|
|
info "Creating ${IMAGE_DIR}/${IMAGE_NAME} based on rootfs at ${ROOTFS}"
|
|
( cd "${ROOTFS}" && sudo find . | sudo cpio -H newc -o | gzip -9 ) > "${IMAGE_DIR}"/"${IMAGE_NAME}"
|