/usr/bin/linaro-media-create is in linaro-image-tools 2016.05-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Copyright (C) 2010, 2011 Linaro
#
# Author: Guilherme Salgado <guilherme.salgado@linaro.org>
#
# This file is part of Linaro Image Tools.
#
# Linaro Image Tools is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Linaro Image Tools is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Linaro Image Tools. If not, see <http://www.gnu.org/licenses/>.
import atexit
import os
import sys
import tempfile
from linaro_image_tools import cmd_runner
from linaro_image_tools.media_create.boards import get_board_config
from linaro_image_tools.media_create.check_device import (
confirm_device_selection_and_ensure_it_is_ready)
from linaro_image_tools.media_create.chroot_utils import (
install_hwpacks,
install_packages,
)
from linaro_image_tools.hwpack.hwpack_reader import (
HwpackReader,
HwpackReaderError,
)
from linaro_image_tools.media_create.partitions import (
Media,
setup_partitions,
get_uuid,
)
from linaro_image_tools.media_create.rootfs import populate_rootfs
from linaro_image_tools.media_create.unpack_binary_tarball import (
unpack_binary_tarball,
)
from linaro_image_tools.media_create import get_args_parser
from linaro_image_tools.utils import (
additional_option_checks,
check_file_integrity_and_log_errors,
check_required_args,
ensure_command,
IncompatibleOptions,
is_arm_host,
MissingRequiredOption,
path_in_tarfile_exists,
prep_media_path,
get_logger,
UnableToFindPackageProvidingCommand,
disable_automount,
enable_automount,
)
# Just define the global variables
TMP_DIR = None
ROOTFS_DIR = None
BOOT_DISK = None
ROOT_DISK = None
# Registered as the first atexit handler as we want this to be the last
# handler to execute.
def cleanup_tempdir():
"""Remove TEMP_DIR with all its contents.
Before doing so, make sure BOOT_DISK and ROOT_DISK are not mounted.
"""
devnull = open('/dev/null', 'w')
# ignore non-zero return codes
for disk in BOOT_DISK, ROOT_DISK:
if disk is not None:
try:
cmd_runner.run(['umount', disk],
stdout=devnull, stderr=devnull, as_root=True).wait()
except cmd_runner.SubcommandNonZeroReturnValue:
pass
# Remove TMP_DIR as root because some files written there are
# owned by root.
if TMP_DIR is not None:
cmd_runner.run(['rm', '-rf', TMP_DIR], as_root=True).wait()
def ensure_required_commands(args):
"""Ensure we have the commands that we know are going to be used."""
required_commands = [
'mkfs.vfat', 'sfdisk', 'mkimage', 'parted', 'gpg', 'sha1sum', 'sgdisk']
if not is_arm_host():
required_commands.append('qemu-arm-static')
if args.rootfs in ['btrfs', 'ext2', 'ext3', 'ext4']:
required_commands.append('mkfs.%s' % args.rootfs)
else:
raise AssertionError('Unsupported rootfs type %s' % args.rootfs)
for command in required_commands:
try:
ensure_command(command)
except UnableToFindPackageProvidingCommand:
logger.error("Could not look up command %s. Please ensure that command %s is installed." % (command, command))
raise
if __name__ == '__main__':
parser = get_args_parser()
args = parser.parse_args()
logger = get_logger(debug=args.debug)
try:
additional_option_checks(args)
except IncompatibleOptions as e:
parser.print_help()
logger.error(e.value)
sys.exit(1)
if args.readhwpack:
try:
reader = HwpackReader(args.hwpacks)
logger.info(reader.get_supported_boards())
sys.exit(0)
except HwpackReaderError as e:
logger.error(e.value)
sys.exit(1)
try:
check_required_args(args)
except MissingRequiredOption as e:
parser.print_help()
logger.error(e.value)
sys.exit(1)
# Do this by default, disable automount options and re-enable them at exit.
disable_automount()
atexit.register(enable_automount)
board_config = get_board_config(args.dev)
board_config.set_metadata(args.hwpacks, args.bootloader, args.dev,
args.dtb_file)
board_config.add_boot_args(args.extra_boot_args)
board_config.add_boot_args_from_file(args.extra_boot_args_file)
media = Media(prep_media_path(args))
if media.is_block_device:
if not board_config.supports_writing_to_mmc:
logger.error("The board '%s' does not support the --mmc option. "
"Please use --image_file to create an image file for "
"this board." % args.dev)
sys.exit(1)
if not confirm_device_selection_and_ensure_it_is_ready(
args.device, args.nocheck_mmc):
sys.exit(1)
elif not args.should_format_rootfs or not args.should_format_bootfs:
logger.error("Do not use --no-boot or --no-part in conjunction with "
"--image_file.")
sys.exit(1)
# If --help was specified this won't execute.
# Create temp dir and initialize rest of path vars.
TMP_DIR = tempfile.mkdtemp()
BOOT_DISK = os.path.join(TMP_DIR, 'boot-disc')
ROOT_DISK = os.path.join(TMP_DIR, 'root-disc')
BIN_DIR = os.path.join(TMP_DIR, 'rootfs')
os.mkdir(BIN_DIR)
logger.info('Searching correct rootfs path')
# Identify the correct path for the rootfs
filesystem_dir = ''
if path_in_tarfile_exists('binary/etc', args.binary):
filesystem_dir = 'binary'
elif path_in_tarfile_exists('binary/boot/filesystem.dir', args.binary):
# The binary image is in the new live format.
filesystem_dir = 'binary/boot/filesystem.dir'
ROOTFS_DIR = os.path.join(BIN_DIR, filesystem_dir)
try:
ensure_required_commands(args)
except UnableToFindPackageProvidingCommand:
sys.exit(1)
sig_file_list = args.hwpacksigs[:]
if args.binarysig is not None:
sig_file_list.append(args.binarysig)
# Check that the signatures that we have been provided (if any) match
# the hwpack and OS binaries we have been provided. If they don't, quit.
files_ok, verified_files = check_file_integrity_and_log_errors(
sig_file_list, args.binary, args.hwpacks)
if not files_ok:
sys.exit(1)
atexit.register(cleanup_tempdir)
unpack_binary_tarball(args.binary, BIN_DIR)
# if compatible system, extract all packages
os_release_id = 'linux'
os_release_file = '%s/etc/os-release' % ROOTFS_DIR
if os.path.exists(os_release_file):
for line in open(os_release_file):
if line.startswith('ID='):
os_release_id = line[(len('ID=')):]
os_release_id = os_release_id.strip('\"\n')
break
if os_release_id == 'debian' or os_release_id == 'ubuntu' or \
os.path.exists('%s/etc/debian_version' % ROOTFS_DIR):
extract_kpkgs = False
elif os_release_id == 'fedora':
extract_kpkgs = False
else:
extract_kpkgs = True
hwpacks = args.hwpacks
lmc_dir = os.path.dirname(__file__)
if lmc_dir == '':
lmc_dir = None
install_hwpacks(ROOTFS_DIR, TMP_DIR, lmc_dir, args.hwpack_force_yes,
verified_files, extract_kpkgs, *hwpacks)
if args.rootfs == 'btrfs':
if not extract_kpkgs:
logger.info("Desired rootfs type is 'btrfs', trying to "
"auto-install the 'btrfs-tools' package")
install_packages(ROOTFS_DIR, TMP_DIR, "btrfs-tools")
else:
logger.info("Desired rootfs type is 'btrfs', please make sure the "
"rootfs also includes 'btrfs-tools'")
boot_partition, root_partition = setup_partitions(
board_config, media, args.image_size, args.boot_label, args.rfs_label,
args.rootfs, args.should_create_partitions, args.should_format_bootfs,
args.should_format_rootfs, args.should_align_boot_part,
args.part_table)
uuid = get_uuid(root_partition)
# In case we're only extracting the kernel packages, avoid
# using uuid because we don't have a working initrd
if extract_kpkgs:
# XXX: workaround https://bugs.launchpad.net/bugs/1208815
# When we use OE, we don't have initrd/UUID and fallback to pass
# root=/dev/mmcblk0p3 to the kernel. It's based on mmc_option value
# provided by the hardware configuration (mmc_id: '0:2').
# At U-Boot stage, the value is correct and we load from mmc 0:2.
# At the kernel stage, the value becomes incorrect because Arndale
# has eMMC and rootfs can be found on /dev/mmcblk1p3.
# Since the boot commands are calculated based on the same mmc_id
# parameter, Arndale can't boot in this use case.
if board_config.board == 'arndale':
board_config.mmc_device_id = board_config.mmc_device_id + 1
# XXX: this needs to be smarter as we can't always assume mmcblk devices
rootfs_id = '/dev/mmcblk%dp%s' % (
board_config.mmc_device_id, 2 + board_config.mmc_part_offset)
else:
rootfs_id = "UUID=%s" % uuid
if args.should_format_bootfs:
board_config.populate_boot(
ROOTFS_DIR, rootfs_id, boot_partition, BOOT_DISK, media.path,
args.is_live, args.is_lowmem, args.consoles)
if args.should_format_rootfs:
create_swap = False
if args.swap_file is not None:
create_swap = True
populate_rootfs(ROOTFS_DIR, ROOT_DISK, root_partition, args.rootfs,
rootfs_id, create_swap, str(args.swap_file),
board_config.mmc_device_id, board_config.mmc_part_offset,
os_release_id, board_config)
logger.info("Done creating Linaro image on %s" % media.path)
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