mirror of
https://github.com/flatcar/scripts.git
synced 2025-08-08 13:36:58 +02:00
3adf3f71e9
The version of this using test -n syntax didn't work in my chroot. Review URL: http://codereview.chromium.org/2951007
132 lines
4.2 KiB
Bash
Executable File
132 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
# Helper script that mounts chromium os image from a device or directory
|
|
# and creates mount points for /var and /usr/local (if in dev_mode).
|
|
|
|
. "$(dirname "$0")/common.sh"
|
|
|
|
# For functions related to gpt images.
|
|
. "$(dirname "$0")/chromeos-common.sh"
|
|
locate_gpt
|
|
|
|
get_default_board
|
|
|
|
# Flags.
|
|
DEFINE_string board "$DEFAULT_BOARD" \
|
|
"The board for which the image was built." b
|
|
DEFINE_boolean unmount $FLAGS_FALSE \
|
|
"Unmount previously mounted dir." u
|
|
DEFINE_string from "/dev/sdc" \
|
|
"Directory containing image or device with image on it" f
|
|
DEFINE_string image "chromiumos_image.bin"\
|
|
"Name of the bin file if a directory is specified in the from flag" i
|
|
DEFINE_string "rootfs_mountpt" "/tmp/m" "Mount point for rootfs" "r"
|
|
DEFINE_string "stateful_mountpt" "/tmp/s" \
|
|
"Mount point for stateful partition" "s"
|
|
DEFINE_string "esp_mountpt" "" \
|
|
"Mount point for esp partition" "e"
|
|
DEFINE_boolean most_recent ${FLAGS_FALSE} "Use the most recent image dir" m
|
|
|
|
# Parse flags
|
|
FLAGS "$@" || exit 1
|
|
eval set -- "${FLAGS_ARGV}"
|
|
|
|
# Die on error
|
|
set -e
|
|
|
|
# Common unmounts for either a device or directory
|
|
function unmount_image() {
|
|
echo "Unmounting image from ${FLAGS_stateful_mountpt}" \
|
|
"and ${FLAGS_rootfs_mountpt}"
|
|
# Don't die on error to force cleanup
|
|
set +e
|
|
# Reset symlinks in /usr/local.
|
|
setup_symlinks_on_root "/usr/local" "/var" \
|
|
"${FLAGS_stateful_mountpt}"
|
|
fix_broken_symlinks "${FLAGS_rootfs_mountpt}"
|
|
sudo umount "${FLAGS_rootfs_mountpt}/usr/local"
|
|
sudo umount "${FLAGS_rootfs_mountpt}/var"
|
|
if [[ -n "${FLAGS_esp_mountpt}" ]]; then
|
|
sudo umount -d "${FLAGS_esp_mountpt}"
|
|
fi
|
|
sudo umount -d "${FLAGS_stateful_mountpt}"
|
|
sudo umount -d "${FLAGS_rootfs_mountpt}"
|
|
set -e
|
|
}
|
|
|
|
function get_usb_partitions() {
|
|
sudo mount "${FLAGS_from}3" "${FLAGS_rootfs_mountpt}"
|
|
sudo mount "${FLAGS_from}1" "${FLAGS_stateful_mountpt}"
|
|
if [[ -n "${FLAGS_esp_mountpt}" ]]; then
|
|
sudo mount "${FLAGS_from}12" "${FLAGS_esp_mountpt}"
|
|
fi
|
|
}
|
|
|
|
function get_gpt_partitions() {
|
|
local filename="${FLAGS_image}"
|
|
|
|
# Mount the rootfs partition using a loopback device.
|
|
local offset=$(partoffset "${FLAGS_from}/${filename}" 3)
|
|
sudo mount -o loop,offset=$(( offset * 512 )) "${FLAGS_from}/${filename}" \
|
|
"${FLAGS_rootfs_mountpt}"
|
|
|
|
# Mount the stateful partition using a loopback device.
|
|
offset=$(partoffset "${FLAGS_from}/${filename}" 1)
|
|
sudo mount -o loop,offset=$(( offset * 512 )) "${FLAGS_from}/${filename}" \
|
|
"${FLAGS_stateful_mountpt}"
|
|
|
|
# Mount the stateful partition using a loopback device.
|
|
if [[ -n "${FLAGS_esp_mountpt}" ]]; then
|
|
offset=$(partoffset "${FLAGS_from}/${filename}" 12)
|
|
sudo mount -o loop,offset=$(( offset * 512 )) "${FLAGS_from}/${filename}" \
|
|
"${FLAGS_esp_mountpt}"
|
|
fi
|
|
}
|
|
|
|
# Mount a gpt based image.
|
|
function mount_image() {
|
|
mkdir -p "${FLAGS_rootfs_mountpt}"
|
|
mkdir -p "${FLAGS_stateful_mountpt}"
|
|
if [[ -n "${FLAGS_esp_mountpt}" ]]; then
|
|
mkdir -p "${FLAGS_esp_mountpt}"
|
|
fi
|
|
|
|
# Get the partitions for the image / device.
|
|
if [ -b ${FLAGS_from} ] ; then
|
|
get_usb_partitions
|
|
else
|
|
get_gpt_partitions
|
|
fi
|
|
|
|
# Mount directories and setup symlinks.
|
|
sudo mount --bind "${FLAGS_stateful_mountpt}/var" \
|
|
"${FLAGS_rootfs_mountpt}/var"
|
|
sudo mount --bind "${FLAGS_stateful_mountpt}/dev_image" \
|
|
"${FLAGS_rootfs_mountpt}/usr/local"
|
|
# Setup symlinks in /usr/local so you can emerge packages into /usr/local.
|
|
setup_symlinks_on_root "${FLAGS_stateful_mountpt}/dev_image" \
|
|
"${FLAGS_stateful_mountpt}/var" "${FLAGS_stateful_mountpt}"
|
|
echo "Image specified by ${FLAGS_from} mounted at"\
|
|
"${FLAGS_rootfs_mountpt} successfully."
|
|
}
|
|
|
|
# Find the last image built on the board.
|
|
if [ ${FLAGS_most_recent} -eq ${FLAGS_TRUE} ] ; then
|
|
IMAGES_DIR="${DEFAULT_BUILD_ROOT}/images/${FLAGS_board}"
|
|
FLAGS_from="${IMAGES_DIR}/$(ls -t ${IMAGES_DIR} 2>&-| head -1)"
|
|
fi
|
|
|
|
# Turn path into an absolute path.
|
|
FLAGS_from=`eval readlink -f ${FLAGS_from}`
|
|
|
|
# Perform desired operation.
|
|
if [ ${FLAGS_unmount} -eq ${FLAGS_TRUE} ] ; then
|
|
unmount_image
|
|
else
|
|
mount_image
|
|
fi
|