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Merge pull request #10174 from ChengyuZhu6/install_script
tools: install luks-encrypt-storage script by guest-components
This commit is contained in:
commit
720edbe3fc
tools
osbuilder/rootfs-builder
packaging/static-build/coco-guest-components
@ -750,11 +750,6 @@ EOF
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tar xvJpf ${COCO_GUEST_COMPONENTS_TARBALL} -C ${ROOTFS_DIR}
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fi
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if [ "${MEASURED_ROOTFS}" == "yes" ]; then
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info "Install init_trusted_storage script"
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install -o root -g root -m 0500 "${script_dir}/scripts/init_trusted_storage.sh" "${ROOTFS_DIR}/usr/local/bin/luks-encrypt-storage"
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fi
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# Create an empty /etc/resolv.conf, to allow agent to bind mount container resolv.conf to Kata VM
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dns_file="${ROOTFS_DIR}/etc/resolv.conf"
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if [ -L "$dns_file" ]; then
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@ -1,145 +0,0 @@
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#!/bin/bash
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#
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# Copyright (c) 2024 Intel Corporation
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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set -o errexit
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set -o nounset
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set -o pipefail
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set -o errtrace
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[ -n "${DEBUG:-}" ] && set -o xtrace
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handle_error() {
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local exit_code="${?}"
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local line_number="${1:-}"
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echo "error:"
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echo "Failed at $line_number: ${BASH_COMMAND}"
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exit "${exit_code}"
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}
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trap 'handle_error $LINENO' ERR
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die() {
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local msg="$*"
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echo >&2 "ERROR: $msg"
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exit 1
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}
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setup() {
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local cmds=()
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cmds+=("cryptsetup" "mkfs.ext4" "mount")
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local cmd
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for cmd in "${cmds[@]}"; do
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command -v "$cmd" &>/dev/null || die "need command: '$cmd'"
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done
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}
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setup
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device_num=${1:-}
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if [ -z "$device_num" ]; then
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die "invalid arguments, at least one param for device num"
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fi
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is_encrypted="false"
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if [ -n "${2-}" ]; then
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is_encrypted="$2"
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fi
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mount_point="/tmp/target_path"
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if [ -n "${3-}" ]; then
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mount_point="$3"
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fi
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storage_key_path="/run/encrypt_storage.key"
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if [ -n "${4-}" ]; then
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storage_key_path="$4"
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fi
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data_integrity="true"
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if [ -n "${5-}" ]; then
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data_integrity="$5"
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fi
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device_name=$(sed -e 's/DEVNAME=//g;t;d' "/sys/dev/block/${device_num}/uevent")
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device_path="/dev/$device_name"
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opened_device_name=$(mktemp -u "encrypted_disk_XXXXX")
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if [[ -n "$device_name" && -b "$device_path" ]]; then
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if [ "$is_encrypted" == "false" ]; then
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if [ "$data_integrity" == "false" ]; then
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cryptsetup --batch-mode luksFormat --type luks2 "$device_path" --sector-size 4096 \
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--cipher aes-xts-plain64 "$storage_key_path"
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else
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# Wiping a device is a time consuming operation. To avoid a full wipe, integritysetup
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# and crypt setup provide a --no-wipe option.
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# However, an integrity device that is not wiped will have invalid checksums. Normally
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# this should not be a problem since a page must first be written to before it can be read
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# (otherwise the data would be arbitrary). The act of writing would populate the checksum
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# for the page.
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# However, tools like mkfs.ext4 read pages before they are written; sometimes the read
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# of an unwritten page happens due to kernel buffering.
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# See https://gitlab.com/cryptsetup/cryptsetup/-/issues/525 for explanation and fix.
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# The way to propery format the non-wiped dm-integrity device is to figure out which pages
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# mkfs.ext4 will write to and then to write to those pages before hand so that they will
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# have valid integrity tags.
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cryptsetup --batch-mode luksFormat --type luks2 "$device_path" --sector-size 4096 \
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--cipher aes-xts-plain64 --integrity hmac-sha256 "$storage_key_path" \
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--integrity-no-wipe
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fi
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fi
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cryptsetup luksOpen -d "$storage_key_path" "$device_path" $opened_device_name
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rm "$storage_key_path"
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if [ "$data_integrity" == "false" ]; then
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mkfs.ext4 /dev/mapper/$opened_device_name -E lazy_journal_init
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else
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# mkfs.ext4 doesn't perform whole sector writes and this will cause checksum failures
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# with an unwiped integrity device. Therefore, first perform a dry run.
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output=$(mkfs.ext4 /dev/mapper/$opened_device_name -F -n)
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# The above command will produce output like
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# mke2fs 1.46.5 (30-Dec-2021)
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# Creating filesystem with 268435456 4k blocks and 67108864 inodes
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# Filesystem UUID: 4a5ff012-91c0-47d9-b4bb-8f83e830825f
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# Superblock backups stored on blocks:
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# 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
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# 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
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# 102400000, 214990848
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delimiter="Superblock backups stored on blocks:"
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blocks_list=$([[ $output =~ $delimiter(.*) ]] && echo "${BASH_REMATCH[1]}")
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# Find list of blocks
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block_nums=$(echo "$blocks_list" | grep -Eo '[0-9]{4,}' | sort -n)
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# Add zero to list of blocks
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block_nums="0 $block_nums"
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# Iterate through each block and write to it to ensure that it has valid checksum
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for block_num in $block_nums; do
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echo "Clearing page at $block_num"
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# Zero out the page
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dd if=/dev/zero bs=4k count=1 oflag=direct \
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of=/dev/mapper/$opened_device_name seek="$block_num"
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done
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# Now perform the actual ext4 format. Use lazy_journal_init so that the journal is
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# initialized on demand. This is safe for ephemeral storage since we don't expect
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# ephemeral storage to survice a power cycle.
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mkfs.ext4 /dev/mapper/$opened_device_name -E lazy_journal_init
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fi
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[ ! -d "$mount_point" ] && mkdir -p $mount_point
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mount /dev/mapper/$opened_device_name $mount_point
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else
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die "Invalid device: '$device_path'"
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fi
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@ -33,6 +33,8 @@ build_coco_guest_components_from_source() {
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strip "target/${RUST_ARCH}-unknown-linux-${LIBC}/release/attestation-agent"
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strip "target/${RUST_ARCH}-unknown-linux-${LIBC}/release/api-server-rest"
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DESTDIR="${DESTDIR}/usr/local/bin" TEE_PLATFORM=${TEE_PLATFORM} make install
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install -D -m0755 "confidential-data-hub/storage/scripts/luks-encrypt-storage" "${DESTDIR}/usr/local/bin/luks-encrypt-storage"
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popd
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}
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