mirror of
https://github.com/kata-containers/kata-containers.git
synced 2025-10-22 04:18:53 +00:00
de6e4dc93f
kata agent is installed in `${ROOTFS}/usr/bin/` rather than `${ROOTFS}/bin/`.
It just happended to work because `bin` is a symlink to `usr/bin`, which
might not be true in some distros. So do not rely on it.
Signed-off-by: Peng Tao <bergwolf@gmail.com>
102 lines
2.2 KiB
Bash
Executable File
102 lines
2.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright (c) 2018 HyperHQ Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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set -e
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script_name="${0##*/}"
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script_dir="$(dirname $(readlink -f $0))"
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if [ -n "$DEBUG" ] ; then
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set -x
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fi
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SCRIPT_NAME="${0##*/}"
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INITRD_IMAGE="${INITRD_IMAGE:-kata-initrd.img}"
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AGENT_BIN=${AGENT_BIN:-kata-agent}
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AGENT_INIT=${AGENT_INIT:-no}
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die()
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{
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local msg="$*"
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echo "ERROR: ${msg}" >&2
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exit 1
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}
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OK()
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{
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local msg="$*"
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echo "[OK] ${msg}" >&2
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}
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info()
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{
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local msg="$*"
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echo "INFO: ${msg}"
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}
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usage()
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{
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error="${1:-0}"
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cat <<EOT
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Usage: ${SCRIPT_NAME} [options] <rootfs-dir>
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This script creates a Kata Containers initrd image file based on the
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<rootfs-dir> directory.
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Options:
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-h Show help
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-o Set the path where the generated image file is stored.
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DEFAULT: the path stored in the environment variable INITRD_IMAGE
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Extra environment variables:
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AGENT_BIN: use it to change the expected agent binary name
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DEFAULT: kata-agent
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AGENT_INIT: use kata agent as init process
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DEFAULT: no
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USE_DOCKER: If set, the image builds in a Docker Container. Setting
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this variable requires Docker.
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DEFAULT: not set
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EOT
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exit "${error}"
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}
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while getopts "ho:" opt
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do
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case "$opt" in
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h) usage ;;
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o) INITRD_IMAGE="${OPTARG}" ;;
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esac
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done
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shift $(( $OPTIND - 1 ))
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ROOTFS="$1"
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[ -n "${ROOTFS}" ] || usage
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[ -d "${ROOTFS}" ] || die "${ROOTFS} is not a directory"
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ROOTFS=$(readlink -f ${ROOTFS})
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IMAGE_DIR=$(dirname ${INITRD_IMAGE})
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IMAGE_DIR=$(readlink -f ${IMAGE_DIR})
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IMAGE_NAME=$(basename ${INITRD_IMAGE})
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# The kata rootfs image expects init to be installed
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init="${ROOTFS}/sbin/init"
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[ -x "${init}" ] || [ -L ${init} ] || die "/sbin/init is not installed in ${ROOTFS_DIR}"
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OK "init is installed"
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[ "${AGENT_INIT}" == "yes" ] || [ -x "${ROOTFS}/usr/bin/${AGENT_BIN}" ] || \
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die "/usr/bin/${AGENT_BIN} is not installed in ${ROOTFS}
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use AGENT_BIN env variable to change the expected agent binary name"
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OK "Agent is installed"
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[ "$(id -u)" -eq 0 ] || die "$0: must be run as root"
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# initramfs expects /init
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mv -f ${init} "${ROOTFS}/init"
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info "Creating ${IMAGE_DIR}/${IMAGE_NAME} based on rootfs at ${ROOTFS}"
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( cd "${ROOTFS}" && find . | cpio -H newc -o | gzip -9 ) > "${IMAGE_DIR}"/"${IMAGE_NAME}"
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