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798d75f3be
from within the chroot. It also fixes a number of style issues. It changes the meaning of cros_workon "list-all" to list all available packages, and adds "list-live" to list all live packages. It changes things that load chromeos-common.sh from the installer to load it from /usr/lib/installer. BUG=chromium-os:4230 TEST=synced, rebuilt chroot, made packages, made images, built chrome from source, and wrote an image to a USB stick. Review URL: http://codereview.chromium.org/6240018 Change-Id: I90c34420af1a64020402bafef8e9e77f56837c02
126 lines
4.4 KiB
Bash
Executable File
126 lines
4.4 KiB
Bash
Executable File
#!/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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# Utility methods used to resize a stateful partition and update the GPT table
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# --- BEGIN COMMON.SH BOILERPLATE ---
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# Load common CrOS utilities. Inside the chroot this file is installed in
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# /usr/lib/crosutils. Outside the chroot we find it relative to the script's
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# location.
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find_common_sh() {
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local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
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local path
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SCRIPT_ROOT=
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for path in "${common_paths[@]}"; do
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if [ -r "${path}/common.sh" ]; then
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SCRIPT_ROOT=${path}
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break
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fi
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done
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}
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find_common_sh
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. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
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# --- END COMMON.SH BOILERPLATE ---
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# Need to be inside the chroot to load chromeos-common.sh
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assert_inside_chroot
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# Load functions and constants for chromeos-install
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. "/usr/lib/installer/chromeos-common.sh" || \
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die "Unable to load /usr/lib/installer/chromeos-common.sh"
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locate_gpt
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umount_from_loop_dev() {
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local mnt_pt=$1
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mount | grep -q " on ${mnt_pt}" && sudo umount -d ${mnt_pt}
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rmdir ${mnt_pt}
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}
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cleanup_loop_dev() {
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sudo losetup -d ${1} || /bin/true
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}
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get_loop_dev() {
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local loop_dev=$(sudo losetup -f)
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if [ -z "${loop_dev}" ]; then
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die "No free loop device. Free up a loop device or reboot. Exiting."
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fi
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echo ${loop_dev}
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}
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# Resize stateful partition of install shim to hold payload content
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# Due to this resize, we need to create a new partition table and a new image.
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# (see update_partition_table() for details)
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enlarge_partition_image() {
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local source_part=$1 # source partition
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local add_num_sectors=$2 # number of 512-byte sectors to be added
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local source_sectors=$(roundup $(numsectors ${source_part}))
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info "source partition has ${source_sectors} 512-byte sectors."
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local resized_sectors=$(roundup $(expr $source_sectors + $add_num_sectors))
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info "resized partition has ${resized_sectors} 512-byte sectors."
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local loop_dev=$(get_loop_dev)
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trap "cleanup_loop_dev ${loop_dev}" EXIT
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# Extend the source file size to the new size.
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dd if=/dev/zero of="${source_part}" bs=1 count=1 \
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seek=$((512 * ${resized_sectors} - 1)) &>/dev/null
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# Resize the partition.
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sudo losetup "${loop_dev}" "${source_part}"
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sudo e2fsck -fp "${loop_dev}" &> /dev/null
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sudo resize2fs "${loop_dev}" &> /dev/null
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# trap handler will clean up the loop device
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echo "${resized_sectors}"
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}
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# Update partition table with resized stateful partition
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update_partition_table() {
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local src_img=$1 # source image
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local temp_state=$2 # stateful partition image
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local resized_sectors=$3 # number of sectors in resized stateful partition
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local temp_img=$4
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local kern_a_offset=$(partoffset ${src_img} 2)
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local kern_a_count=$(partsize ${src_img} 2)
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local kern_b_offset=$(partoffset ${src_img} 4)
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local kern_b_count=$(partsize ${src_img} 4)
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local rootfs_offset=$(partoffset ${src_img} 3)
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local rootfs_count=$(partsize ${src_img} 3)
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local oem_offset=$(partoffset ${src_img} 8)
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local oem_count=$(partsize ${src_img} 8)
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local esp_offset=$(partoffset ${src_img} 12)
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local esp_count=$(partsize ${src_img} 12)
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local temp_pmbr=$(mktemp "/tmp/pmbr.XXXXXX")
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dd if="${src_img}" of="${temp_pmbr}" bs=512 count=1 &>/dev/null
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trap "rm -rf \"${temp_pmbr}\"" EXIT
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# Set up a new partition table
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install_gpt "${temp_img}" "${rootfs_count}" "${resized_sectors}" \
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"${temp_pmbr}" "${esp_count}" false \
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$(((rootfs_count * 512)/(1024 * 1024)))
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# Copy into the partition parts of the file
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dd if="${src_img}" of="${temp_img}" conv=notrunc bs=512 \
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seek="${START_ROOTFS_A}" skip=${rootfs_offset} count=${rootfs_count}
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dd if="${temp_state}" of="${temp_img}" conv=notrunc bs=512 \
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seek="${START_STATEFUL}"
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# Copy the full kernel (i.e. with vboot sections)
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dd if="${src_img}" of="${temp_img}" conv=notrunc bs=512 \
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seek="${START_KERN_A}" skip=${kern_a_offset} count=${kern_a_count}
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dd if="${src_img}" of="${temp_img}" conv=notrunc bs=512 \
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seek="${START_KERN_B}" skip=${kern_b_offset} count=${kern_b_count}
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dd if="${src_img}" of="${temp_img}" conv=notrunc bs=512 \
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seek="${START_OEM}" skip=${oem_offset} count=${oem_count}
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dd if="${src_img}" of="${temp_img}" conv=notrunc bs=512 \
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seek="${START_ESP}" skip=${esp_offset} count=${esp_count}
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}
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