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Merge pull request from ChengyuZhu6/install_script

tools: install luks-encrypt-storage script by guest-components
This commit is contained in:
Fabiano Fidêncio 2024-08-16 22:04:56 +02:00 committed by GitHub
commit 720edbe3fc
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3 changed files with 2 additions and 150 deletions
tools
osbuilder/rootfs-builder
packaging/static-build/coco-guest-components

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@ -750,11 +750,6 @@ EOF
tar xvJpf ${COCO_GUEST_COMPONENTS_TARBALL} -C ${ROOTFS_DIR}
fi
if [ "${MEASURED_ROOTFS}" == "yes" ]; then
info "Install init_trusted_storage script"
install -o root -g root -m 0500 "${script_dir}/scripts/init_trusted_storage.sh" "${ROOTFS_DIR}/usr/local/bin/luks-encrypt-storage"
fi
# Create an empty /etc/resolv.conf, to allow agent to bind mount container resolv.conf to Kata VM
dns_file="${ROOTFS_DIR}/etc/resolv.conf"
if [ -L "$dns_file" ]; then

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

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@ -33,6 +33,8 @@ build_coco_guest_components_from_source() {
strip "target/${RUST_ARCH}-unknown-linux-${LIBC}/release/attestation-agent"
strip "target/${RUST_ARCH}-unknown-linux-${LIBC}/release/api-server-rest"
DESTDIR="${DESTDIR}/usr/local/bin" TEE_PLATFORM=${TEE_PLATFORM} make install
install -D -m0755 "confidential-data-hub/storage/scripts/luks-encrypt-storage" "${DESTDIR}/usr/local/bin/luks-encrypt-storage"
popd
}