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https://github.com/truenas/scale-build.git
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71557b080f
Always use '/var/empty' when comparing reference files to match TrueNAS SCALE's standard home directory for system users, preventing false cache invalidation due to Debian's '/nonexistent' default.
85 lines
3.6 KiB
Python
85 lines
3.6 KiB
Python
import logging
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import os
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from .bootstrap.bootstrapdir import RootfsBootstrapDir
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from .exceptions import CallError
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from .image.bootstrap import (
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clean_mounts, setup_chroot_basedir, umount_chroot_basedir, umount_tmpfs_and_clean_chroot_dir
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)
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from .image.manifest import update_file_path
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from .image.update import install_rootfs_packages, build_rootfs_image
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from .utils.logger import LoggingContext
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from .utils.paths import CHROOT_BASEDIR, LOG_DIR, REFERENCE_FILES, REFERENCE_FILES_DIR, RELEASE_DIR
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from .utils.reference_files import compare_reference_files
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logger = logging.getLogger(__name__)
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def build_update_image():
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try:
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return build_update_image_impl()
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finally:
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clean_mounts()
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def build_update_image_impl():
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os.makedirs(RELEASE_DIR, exist_ok=True)
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clean_mounts()
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os.makedirs(CHROOT_BASEDIR)
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logger.debug('Bootstrapping TrueNAS rootfs [UPDATE] (%s/rootfs-bootstrap.log)', LOG_DIR)
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with LoggingContext('rootfs-bootstrap', 'w'):
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package_bootstrap_obj = RootfsBootstrapDir()
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package_bootstrap_obj.setup()
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logger.debug('Installing TrueNAS rootfs package [UPDATE] (%s/rootfs-packages.log)', LOG_DIR)
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try:
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with LoggingContext('rootfs-packages', 'w'):
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setup_chroot_basedir(package_bootstrap_obj)
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# These files will be overwritten, so we should make sure that new build does not have any entities that
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# are not in our reference files.
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for reference_file, diff in compare_reference_files(
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cut_nonexistent_user_group_membership=True,
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default_homedir='/var/empty'
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):
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if any(line.startswith('+') for line in diff):
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raise CallError(
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f'Reference file {reference_file!r} has new lines in newly installed system.\n'
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f'Full diff below:\n' +
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''.join(diff) + '\n' +
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'Please update corresponding file in `conf/reference-files/` directory of scale-build '
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'repository.'
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)
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# built-in users and groups are typically created by debian packages postinst scripts.
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# As newly created user/group uid/gid uses autoincrement counter and debian packages install order is
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# undetermined, different builds are not guaranteed to have the same uid/gids. We overcome this issue by
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# persisting `group` and `passwd` files between builds.
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for reference_file in REFERENCE_FILES:
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with open(os.path.join(CHROOT_BASEDIR, reference_file), 'w') as dst:
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with open(os.path.join(REFERENCE_FILES_DIR, reference_file)) as src:
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dst.write(src.read())
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install_rootfs_packages()
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for reference_file, diff in compare_reference_files(default_homedir='/var/empty'):
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if diff:
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raise CallError(
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f'Reference file {reference_file!r} changed.\n'
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f'Full diff below:\n' +
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''.join(diff) + '\n' +
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'Please update corresponding file in `conf/reference-files/` directory of scale-build '
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'repository.'
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)
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logger.debug('Building TrueNAS rootfs image [UPDATE] (%s/rootfs-image.log)', LOG_DIR)
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with LoggingContext('rootfs-image', 'w'):
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build_rootfs_image()
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finally:
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umount_chroot_basedir()
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umount_tmpfs_and_clean_chroot_dir()
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logger.info('Success! Update image created at: %s', update_file_path())
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