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224817fda9
To avoid needing to migrate fresh dev images's /var contents when using the encrypted partition, move the /var bits out of the old stateful_partition/var location into stateful_partition/var_overlay. The (initially empty) system /var will continue to either live in stateful_partition/var (in the unencrypted case), or in stateful_partition/encrypted/var (in the encrypted case). The contents needed for gmerge will be symlinked into place at runtime (via CL I6e68b1f334f5d5b3c4d2977008435bd929191ce7). While the installer already makes sure that /var is not shipped on an image, this change additionally make sure that the other contents installed by the ebuilds will not show up in the actual /var either. BUG=chromium-os:22172 TEST=link build, boot, install, manual testing. Change-Id: Ie6480a59929818fe5d36a46abf533b648fb78850 Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/26355 Reviewed-by: Chris Sosa <sosa@chromium.org>
76 lines
1.7 KiB
Bash
Executable File
76 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Usage:
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# update_image.sh [image_to_update] [packages...]
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usage()
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{
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cat <<EOF
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usage:
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update_image.sh [image_to_update] [packages...]
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EOF
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}
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if [[ $# < 2 ]]; then
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echo "Not enough arguments supplied."
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usage
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exit 1
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fi
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if [[ -f /home/${USER}/trunk/src/scripts/.default_board ]]; then
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BOARD=$( cat /home/${USER}/trunk/src/scripts/.default_board )
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else
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BOARD=st1q
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fi
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IMAGE=$( readlink -f ${1} )
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IMAGE_DIR=$( dirname "${IMAGE}" )
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shift
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PKGS=$@
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if [[ -z "${IMAGE}" || ! -f ${IMAGE} ]]; then
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echo "Missing required argument 'image_to_update'"
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usage
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exit 1
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fi
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cd ${IMAGE_DIR}
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if ! [[ -x ./unpack_partitions.sh && -x ./pack_partitions.sh ]]; then
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echo "Could not find image manipulation scripts."
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exit 1
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fi
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./unpack_partitions.sh ${IMAGE}
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mkdir -p ./rootfs
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mkdir -p ./stateful_part
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mkdir -p ./orig_partitions
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rm -rf ./orig_partitions/*
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cp ./part_* ./orig_partitions
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sudo mount -o loop part_3 rootfs
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sudo mount -o loop part_1 stateful_part
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sudo mount --bind stateful_part/dev_image rootfs/usr/local
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sudo mount --bind stateful_part/var_overlay rootfs/var
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emerge-${BOARD} --root="./rootfs" \
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--root-deps=rdeps --nodeps --usepkgonly ${PKGS}
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#if the kernel is one of the packages that got updated
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#we need to update the kernel partition as well.
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if [[ ${PKGS/kernel/} != ${PKGS} ]]; then
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rm -rf part_2
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sudo dd if="/dev/zero" of=part_2 bs=512 count=8192
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sudo dd if="./rootfs/boot/vmlinuz" of=part_2 bs=512 count=8192 conv=notrunc
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fi
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sudo umount rootfs/usr/local
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sudo umount rootfs/var
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sudo umount rootfs
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sudo umount stateful_part
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./pack_partitions.sh ${IMAGE}
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cd -
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