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New helper script to mount (and umount) gpt image into image_dir/rootfs and mount /var, /usr/local
Review URL: http://codereview.chromium.org/1648018
This commit is contained in:
Chris Sosa
parent
127c3bfa2b
commit
fb78b42940
100
mount_gpt_image.sh
Executable file
100
mount_gpt_image.sh
Executable file
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#!/bin/bash
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# Copyright (c) 2010 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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# Helper script that mounts chromium os image from a device or directory
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# and creates mount points for /var and /usr/local (if in dev_mode).
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. "$(dirname "$0")/common.sh"
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get_default_board
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# Flags.
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DEFINE_string board "$DEFAULT_BOARD" \
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"The board for which the image was built." b
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DEFINE_boolean unmount $FLAGS_FALSE \
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"Unmount previously mounted dir." u
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DEFINE_string from "/dev/sdc" \
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"Directory containing image or device with image on it" f
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DEFINE_boolean test $FLAGS_FALSE "Use chromiumos_test_image.bin" t
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DEFINE_string "rootfs_mountpt" "/tmp/m" "Mount point for rootfs" "r"
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DEFINE_string "stateful_mountpt" "/tmp/s" \
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"Mount point for stateful partition" "s"
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DEFINE_boolean most_recent ${FLAGS_FALSE} "Use the most recent image dir" m
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# Parse flags
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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# Die on error
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set -e
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# Common umounts for either a device or directory
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function unmount_common() {
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echo "Unmounting image from ${FLAGS_stateful_mountpt}" \
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"and ${FLAGS_rootfs_mountpt}"
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# Don't die on error to force cleanup
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set +e
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if [ -e "${FLAGS_rootfs_mountpt}/root/.dev_mode" ] ; then
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sudo umount "${FLAGS_rootfs_mountpt}/usr/local"
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fi
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sudo umount "${FLAGS_rootfs_mountpt}/var"
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sudo umount -d "${FLAGS_stateful_mountpt}"
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sudo umount -d "${FLAGS_rootfs_mountpt}"
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set -e
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}
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# Sets up the rootfs and stateful partitions specified by
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# ${FLAGS_from}${prefix}[31] to the given mount points and sets up var and
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# usr/local
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# ${1} - prefix name for the partition
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# ${2} - extra mount options for the partitions
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function mount_common() {
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mkdir -p "${FLAGS_rootfs_mountpt}"
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mkdir -p "${FLAGS_stateful_mountpt}"
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sudo mount ${2} "${FLAGS_from}${1}3" "${FLAGS_rootfs_mountpt}"
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sudo mount ${2} "${FLAGS_from}${1}1" "${FLAGS_stateful_mountpt}"
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sudo mount --bind "${FLAGS_stateful_mountpt}/var" \
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"${FLAGS_rootfs_mountpt}/var"
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if [ -e "${FLAGS_rootfs_mountpt}/root/.dev_mode" ] ; then
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sudo mount --bind "${FLAGS_stateful_mountpt}/dev_image" \
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"${FLAGS_rootfs_mountpt}/usr/local"
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fi
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echo "Root FS specified by "${FLAGS_from}${1}3" mounted at"\
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"${FLAGS_rootfs_mountpt} successfully."
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}
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# Find the last image built on the board
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if [ ${FLAGS_most_recent} -eq ${FLAGS_TRUE} ] ; then
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IMAGES_DIR="${DEFAULT_BUILD_ROOT}/images/${FLAGS_board}"
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FLAGS_from="${IMAGES_DIR}/$(ls -t ${IMAGES_DIR} 2>&-| head -1)"
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fi
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# Turn into absolute path
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FLAGS_from=`eval readlink -f ${FLAGS_from}`
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# Set the file name of the image if ${FLAGS_from} is not a device and cd
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if [ -d "${FLAGS_from}" ] ; then
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cd "${FLAGS_from}"
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IMAGE_NAME=chromiumos_image.bin
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[ ${FLAGS_test} -eq ${FLAGS_TRUE} ] && IMAGE_NAME=chromiumos_test_image.bin
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fi
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if [ ${FLAGS_unmount} -eq ${FLAGS_TRUE} ] ; then
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unmount_common
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if [ -d "${FLAGS_from}" ] ; then
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echo "Re-packing partitions onto ${FLAGS_from}/${IMAGE_NAME}"
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./pack_partitions.sh ${IMAGE_NAME} 2> /dev/null
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sudo rm part_*
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fi
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else
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if [ -b ${FLAGS_from} ] ; then
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mount_common "" ""
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else
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echo "Unpacking partitions from ${FLAGS_from}/${IMAGE_NAME}"
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./unpack_partitions.sh ${IMAGE_NAME} 2> /dev/null
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mount_common "/part_" "-o loop"
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fi
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fi
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37
prep_usb.sh
37
prep_usb.sh
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#!/bin/bash
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# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Load common constants. This should be the first executable line.
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# The path to common.sh should be relative to your script's location.
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. "$(dirname "$0")/common.sh"
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DEFINE_boolean "unmount" $FLAGS_FALSE "unmount USB partitions" "u"
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DEFINE_string "device" "/dev/sdc" \
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"The device on which the mountable partitions live." "d"
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DEFINE_string "rootfs_mountpt" "/tmp/m" "Mount point for rootfs" "r"
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DEFINE_string "stateful_mountpt" "/tmp/s" \
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"Mount point for stateful partition" "s"
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# Parse command line.
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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mkdir -p "${FLAGS_rootfs_mountpt}"
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mkdir -p "${FLAGS_stateful_mountpt}"
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if [[ $FLAGS_unmount -eq $FLAGS_FALSE ]]; then
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sudo mount "${FLAGS_device}3" "${FLAGS_rootfs_mountpt}"
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sudo mount "${FLAGS_device}1" "${FLAGS_stateful_mountpt}"
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sudo mount --bind "${FLAGS_stateful_mountpt}/var" \
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"${FLAGS_rootfs_mountpt}/var"
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echo "RootFS of bootable medium mounted at ${FLAGS_rootfs_mountpt}."
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else
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echo "Attempting to unmount ${FLAGS_stateful_mountpt} " \
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"and ${FLAGS_rootfs_mountpt}"
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sudo umount "${FLAGS_rootfs_mountpt}/var"
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sudo umount "${FLAGS_stateful_mountpt}"
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sudo umount "${FLAGS_rootfs_mountpt}"
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fi
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