Source code for borg.archiver

from binascii import hexlify, unhexlify
from datetime import datetime
from hashlib import sha256
from operator import attrgetter
import argparse
import functools
import inspect
import io
import os
import shlex
import signal
import stat
import sys
import textwrap
import traceback

from . import __version__
from .helpers import Error, location_validator, archivename_validator, format_line, format_time, format_file_size, \
    parse_pattern, PathPrefixPattern, to_localtime, timestamp, safe_timestamp, \
    get_cache_dir, prune_within, prune_split, \
    Manifest, remove_surrogates, update_excludes, format_archive, check_extension_modules, Statistics, \
    dir_is_tagged, bigint_to_int, ChunkerParams, CompressionSpec, is_slow_msgpack, yes, sysinfo, \
    EXIT_SUCCESS, EXIT_WARNING, EXIT_ERROR, log_multi, PatternMatcher
from .logger import create_logger, setup_logging
logger = create_logger()
from .compress import Compressor, COMPR_BUFFER
from .upgrader import AtticRepositoryUpgrader, BorgRepositoryUpgrader
from .repository import Repository
from .cache import Cache
from .key import key_creator, RepoKey, PassphraseKey
from .archive import Archive, ArchiveChecker, CHUNKER_PARAMS
from .remote import RepositoryServer, RemoteRepository, cache_if_remote

has_lchflags = hasattr(os, 'lchflags')

# default umask, overriden by --umask, defaults to read/write only for owner
UMASK_DEFAULT = 0o077

DASHES = '-' * 78


[docs]class ToggleAction(argparse.Action): """argparse action to handle "toggle" flags easily toggle flags are in the form of ``--foo``, ``--no-foo``. the ``--no-foo`` argument still needs to be passed to the ``add_argument()`` call, but it simplifies the ``--no`` detection. """ def __call__(self, parser, ns, values, option): """set the given flag to true unless ``--no`` is passed""" setattr(ns, self.dest, not option.startswith('--no-'))
[docs]class Archiver: def __init__(self, lock_wait=None): self.exit_code = EXIT_SUCCESS self.lock_wait = lock_wait
[docs] def open_repository(self, args, create=False, exclusive=False, lock=True): location = args.location # note: 'location' must be always present in args if location.proto == 'ssh': repository = RemoteRepository(location, create=create, lock_wait=self.lock_wait, lock=lock, args=args) else: repository = Repository(location.path, create=create, exclusive=exclusive, lock_wait=self.lock_wait, lock=lock) return repository
[docs] def print_error(self, msg, *args): msg = args and msg % args or msg self.exit_code = EXIT_ERROR logger.error(msg)
[docs] def print_warning(self, msg, *args): msg = args and msg % args or msg self.exit_code = EXIT_WARNING # we do not terminate here, so it is a warning logger.warning(msg)
[docs] def print_file_status(self, status, path): if self.output_list and (self.output_filter is None or status in self.output_filter): logger.info("%1s %s", status, remove_surrogates(path))
[docs] def do_serve(self, args): """Start in server mode. This command is usually not used manually. """ return RepositoryServer(restrict_to_paths=args.restrict_to_paths).serve()
[docs] def do_init(self, args): """Initialize an empty repository""" logger.info('Initializing repository at "%s"' % args.location.canonical_path()) repository = self.open_repository(args, create=True, exclusive=True) key = key_creator(repository, args) manifest = Manifest(key, repository) manifest.key = key manifest.write() repository.commit() with Cache(repository, key, manifest, warn_if_unencrypted=False): pass return self.exit_code
[docs] def do_check(self, args): """Check repository consistency""" repository = self.open_repository(args, exclusive=args.repair) if args.repair: msg = ("'check --repair' is an experimental feature that might result in data loss." + "\n" + "Type 'YES' if you understand this and want to continue: ") if not yes(msg, false_msg="Aborting.", truish=('YES', ), env_var_override='BORG_CHECK_I_KNOW_WHAT_I_AM_DOING'): return EXIT_ERROR if not args.archives_only: if not repository.check(repair=args.repair, save_space=args.save_space): return EXIT_WARNING if not args.repo_only and not ArchiveChecker().check( repository, repair=args.repair, archive=args.location.archive, last=args.last, prefix=args.prefix, save_space=args.save_space): return EXIT_WARNING return EXIT_SUCCESS
[docs] def do_change_passphrase(self, args): """Change repository key file passphrase""" repository = self.open_repository(args) manifest, key = Manifest.load(repository) key.change_passphrase() return EXIT_SUCCESS
[docs] def do_migrate_to_repokey(self, args): """Migrate passphrase -> repokey""" repository = self.open_repository(args) manifest_data = repository.get(Manifest.MANIFEST_ID) key_old = PassphraseKey.detect(repository, manifest_data) key_new = RepoKey(repository) key_new.target = repository key_new.repository_id = repository.id key_new.enc_key = key_old.enc_key key_new.enc_hmac_key = key_old.enc_hmac_key key_new.id_key = key_old.id_key key_new.chunk_seed = key_old.chunk_seed key_new.change_passphrase() # option to change key protection passphrase, save return EXIT_SUCCESS
[docs] def do_create(self, args): """Create new archive""" matcher = PatternMatcher(fallback=True) if args.excludes: matcher.add(args.excludes, False) def create_inner(archive, cache): # Add cache dir to inode_skip list skip_inodes = set() try: st = os.stat(get_cache_dir()) skip_inodes.add((st.st_ino, st.st_dev)) except OSError: pass # Add local repository dir to inode_skip list if not args.location.host: try: st = os.stat(args.location.path) skip_inodes.add((st.st_ino, st.st_dev)) except OSError: pass for path in args.paths: if path == '-': # stdin path = 'stdin' if not dry_run: try: status = archive.process_stdin(path, cache) except OSError as e: status = 'E' self.print_warning('%s: %s', path, e) else: status = '-' self.print_file_status(status, path) continue path = os.path.normpath(path) if args.one_file_system: try: restrict_dev = os.lstat(path).st_dev except OSError as e: self.print_warning('%s: %s', path, e) continue else: restrict_dev = None self._process(archive, cache, matcher, args.exclude_caches, args.exclude_if_present, args.keep_tag_files, skip_inodes, path, restrict_dev, read_special=args.read_special, dry_run=dry_run) if not dry_run: archive.save(timestamp=args.timestamp) if args.progress: archive.stats.show_progress(final=True) if args.stats: archive.end = datetime.utcnow() log_multi(DASHES, str(archive), DASHES, str(archive.stats), str(cache), DASHES) self.output_filter = args.output_filter self.output_list = args.output_list dry_run = args.dry_run t0 = datetime.utcnow() if not dry_run: repository = self.open_repository(args, exclusive=True) manifest, key = Manifest.load(repository) compr_args = dict(buffer=COMPR_BUFFER) compr_args.update(args.compression) key.compressor = Compressor(**compr_args) with Cache(repository, key, manifest, do_files=args.cache_files, lock_wait=self.lock_wait) as cache: archive = Archive(repository, key, manifest, args.location.archive, cache=cache, create=True, checkpoint_interval=args.checkpoint_interval, numeric_owner=args.numeric_owner, progress=args.progress, chunker_params=args.chunker_params, start=t0) create_inner(archive, cache) else: create_inner(None, None) return self.exit_code
def _process(self, archive, cache, matcher, exclude_caches, exclude_if_present, keep_tag_files, skip_inodes, path, restrict_dev, read_special=False, dry_run=False): if not matcher.match(path): return try: st = os.lstat(path) except OSError as e: self.print_warning('%s: %s', path, e) return if (st.st_ino, st.st_dev) in skip_inodes: return # Entering a new filesystem? if restrict_dev and st.st_dev != restrict_dev: return status = None # Ignore if nodump flag is set if has_lchflags and (st.st_flags & stat.UF_NODUMP): return if stat.S_ISREG(st.st_mode) or read_special and not stat.S_ISDIR(st.st_mode): if not dry_run: try: status = archive.process_file(path, st, cache) except OSError as e: status = 'E' self.print_warning('%s: %s', path, e) elif stat.S_ISDIR(st.st_mode): tag_paths = dir_is_tagged(path, exclude_caches, exclude_if_present) if tag_paths: if keep_tag_files and not dry_run: archive.process_dir(path, st) for tag_path in tag_paths: self._process(archive, cache, matcher, exclude_caches, exclude_if_present, keep_tag_files, skip_inodes, tag_path, restrict_dev, read_special=read_special, dry_run=dry_run) return if not dry_run: status = archive.process_dir(path, st) try: entries = os.listdir(path) except OSError as e: status = 'E' self.print_warning('%s: %s', path, e) else: for filename in sorted(entries): entry_path = os.path.normpath(os.path.join(path, filename)) self._process(archive, cache, matcher, exclude_caches, exclude_if_present, keep_tag_files, skip_inodes, entry_path, restrict_dev, read_special=read_special, dry_run=dry_run) elif stat.S_ISLNK(st.st_mode): if not dry_run: status = archive.process_symlink(path, st) elif stat.S_ISFIFO(st.st_mode): if not dry_run: status = archive.process_fifo(path, st) elif stat.S_ISCHR(st.st_mode) or stat.S_ISBLK(st.st_mode): if not dry_run: status = archive.process_dev(path, st) elif stat.S_ISSOCK(st.st_mode): # Ignore unix sockets return else: self.print_warning('Unknown file type: %s', path) return # Status output if status is None: if not dry_run: status = '?' # need to add a status code somewhere else: status = '-' # dry run, item was not backed up self.print_file_status(status, path)
[docs] def do_extract(self, args): """Extract archive contents""" # be restrictive when restoring files, restore permissions later if sys.getfilesystemencoding() == 'ascii': logger.warning('Warning: File system encoding is "ascii", extracting non-ascii filenames will not be supported.') if sys.platform.startswith(('linux', 'freebsd', 'netbsd', 'openbsd', 'darwin', )): logger.warning('Hint: You likely need to fix your locale setup. E.g. install locales and use: LANG=en_US.UTF-8') repository = self.open_repository(args) manifest, key = Manifest.load(repository) archive = Archive(repository, key, manifest, args.location.archive, numeric_owner=args.numeric_owner) matcher = PatternMatcher() if args.excludes: matcher.add(args.excludes, False) include_patterns = [] if args.paths: include_patterns.extend(parse_pattern(i, PathPrefixPattern) for i in args.paths) matcher.add(include_patterns, True) matcher.fallback = not include_patterns output_list = args.output_list dry_run = args.dry_run stdout = args.stdout sparse = args.sparse strip_components = args.strip_components dirs = [] for item in archive.iter_items(lambda item: matcher.match(item[b'path']), preload=True): orig_path = item[b'path'] if strip_components: item[b'path'] = os.sep.join(orig_path.split(os.sep)[strip_components:]) if not item[b'path']: continue if not args.dry_run: while dirs and not item[b'path'].startswith(dirs[-1][b'path']): archive.extract_item(dirs.pop(-1), stdout=stdout) if output_list: logger.info(remove_surrogates(orig_path)) try: if dry_run: archive.extract_item(item, dry_run=True) else: if stat.S_ISDIR(item[b'mode']): dirs.append(item) archive.extract_item(item, restore_attrs=False) else: archive.extract_item(item, stdout=stdout, sparse=sparse) except OSError as e: self.print_warning('%s: %s', remove_surrogates(orig_path), e) if not args.dry_run: while dirs: archive.extract_item(dirs.pop(-1)) for pattern in include_patterns: if pattern.match_count == 0: self.print_warning("Include pattern '%s' never matched.", pattern) return self.exit_code
[docs] def do_rename(self, args): """Rename an existing archive""" repository = self.open_repository(args, exclusive=True) manifest, key = Manifest.load(repository) with Cache(repository, key, manifest, lock_wait=self.lock_wait) as cache: archive = Archive(repository, key, manifest, args.location.archive, cache=cache) archive.rename(args.name) manifest.write() repository.commit() cache.commit() return self.exit_code
[docs] def do_delete(self, args): """Delete an existing repository or archive""" repository = self.open_repository(args, exclusive=True) manifest, key = Manifest.load(repository) with Cache(repository, key, manifest, do_files=args.cache_files, lock_wait=self.lock_wait) as cache: if args.location.archive: archive = Archive(repository, key, manifest, args.location.archive, cache=cache) stats = Statistics() archive.delete(stats, progress=args.progress) manifest.write() repository.commit(save_space=args.save_space) cache.commit() logger.info("Archive deleted.") if args.stats: log_multi(DASHES, stats.summary.format(label='Deleted data:', stats=stats), str(cache), DASHES) else: if not args.cache_only: msg = [] msg.append("You requested to completely DELETE the repository *including* all archives it contains:") for archive_info in manifest.list_archive_infos(sort_by='ts'): msg.append(format_archive(archive_info)) msg.append("Type 'YES' if you understand this and want to continue: ") msg = '\n'.join(msg) if not yes(msg, false_msg="Aborting.", truish=('YES', ), env_var_override='BORG_DELETE_I_KNOW_WHAT_I_AM_DOING'): self.exit_code = EXIT_ERROR return self.exit_code repository.destroy() logger.info("Repository deleted.") cache.destroy() logger.info("Cache deleted.") return self.exit_code
[docs] def do_mount(self, args): """Mount archive or an entire repository as a FUSE fileystem""" try: from .fuse import FuseOperations except ImportError as e: self.print_error('Loading fuse support failed [ImportError: %s]' % str(e)) return self.exit_code if not os.path.isdir(args.mountpoint) or not os.access(args.mountpoint, os.R_OK | os.W_OK | os.X_OK): self.print_error('%s: Mountpoint must be a writable directory' % args.mountpoint) return self.exit_code repository = self.open_repository(args) try: with cache_if_remote(repository) as cached_repo: manifest, key = Manifest.load(repository) if args.location.archive: archive = Archive(repository, key, manifest, args.location.archive) else: archive = None operations = FuseOperations(key, repository, manifest, archive, cached_repo) logger.info("Mounting filesystem") try: operations.mount(args.mountpoint, args.options, args.foreground) except RuntimeError: # Relevant error message already printed to stderr by fuse self.exit_code = EXIT_ERROR finally: repository.close() return self.exit_code
[docs] def do_list(self, args): """List archive or repository contents""" repository = self.open_repository(args) manifest, key = Manifest.load(repository) if args.location.archive: archive = Archive(repository, key, manifest, args.location.archive) """use_user_format flag is used to speed up default listing. When user issues format options, listing is a bit slower, but more keys are available and precalculated. """ use_user_format = args.listformat is not None if use_user_format: list_format = args.listformat elif args.short: list_format = "{path}{LF}" else: list_format = "{mode} {user:6} {group:6} {size:8d} {isomtime} {path}{extra}{LF}" for item in archive.iter_items(): mode = stat.filemode(item[b'mode']) type = mode[0] size = 0 if type == '-': try: size = sum(size for _, size, _ in item[b'chunks']) except KeyError: pass mtime = safe_timestamp(item[b'mtime']) if use_user_format: atime = safe_timestamp(item.get(b'atime') or item[b'mtime']) ctime = safe_timestamp(item.get(b'ctime') or item[b'mtime']) if b'source' in item: source = item[b'source'] if type == 'l': extra = ' -> %s' % item[b'source'] else: mode = 'h' + mode[1:] extra = ' link to %s' % item[b'source'] else: extra = '' source = '' item_data = { 'mode': mode, 'user': item[b'user'] or item[b'uid'], 'group': item[b'group'] or item[b'gid'], 'size': size, 'isomtime': format_time(mtime), 'path': remove_surrogates(item[b'path']), 'extra': extra, 'LF': '\n', } if use_user_format: item_data_advanced = { 'bmode': item[b'mode'], 'type': type, 'source': source, 'linktarget': source, 'uid': item[b'uid'], 'gid': item[b'gid'], 'mtime': mtime, 'isoctime': format_time(ctime), 'ctime': ctime, 'isoatime': format_time(atime), 'atime': atime, 'archivename': archive.name, 'SPACE': ' ', 'TAB': '\t', 'CR': '\r', 'NEWLINE': os.linesep, } item_data.update(item_data_advanced) item_data['formatkeys'] = list(item_data.keys()) print(format_line(list_format, item_data), end='') else: for archive_info in manifest.list_archive_infos(sort_by='ts'): if args.prefix and not archive_info.name.startswith(args.prefix): continue if args.short: print(archive_info.name) else: print(format_archive(archive_info)) return self.exit_code
[docs] def do_info(self, args): """Show archive details such as disk space used""" repository = self.open_repository(args) manifest, key = Manifest.load(repository) with Cache(repository, key, manifest, do_files=args.cache_files, lock_wait=self.lock_wait) as cache: archive = Archive(repository, key, manifest, args.location.archive, cache=cache) stats = archive.calc_stats(cache) print('Name:', archive.name) print('Fingerprint: %s' % hexlify(archive.id).decode('ascii')) print('Hostname:', archive.metadata[b'hostname']) print('Username:', archive.metadata[b'username']) print('Time (start): %s' % format_time(to_localtime(archive.ts))) print('Time (end): %s' % format_time(to_localtime(archive.ts_end))) print('Command line:', remove_surrogates(' '.join(archive.metadata[b'cmdline']))) print('Number of files: %d' % stats.nfiles) print() print(str(stats)) print(str(cache)) return self.exit_code
[docs] def do_prune(self, args): """Prune repository archives according to specified rules""" repository = self.open_repository(args, exclusive=True) manifest, key = Manifest.load(repository) archives = manifest.list_archive_infos(sort_by='ts', reverse=True) # just a ArchiveInfo list if args.hourly + args.daily + args.weekly + args.monthly + args.yearly == 0 and args.within is None: self.print_error('At least one of the "keep-within", "keep-hourly", "keep-daily", "keep-weekly", ' '"keep-monthly" or "keep-yearly" settings must be specified') return self.exit_code if args.prefix: archives = [archive for archive in archives if archive.name.startswith(args.prefix)] keep = [] if args.within: keep += prune_within(archives, args.within) if args.hourly: keep += prune_split(archives, '%Y-%m-%d %H', args.hourly, keep) if args.daily: keep += prune_split(archives, '%Y-%m-%d', args.daily, keep) if args.weekly: keep += prune_split(archives, '%G-%V', args.weekly, keep) if args.monthly: keep += prune_split(archives, '%Y-%m', args.monthly, keep) if args.yearly: keep += prune_split(archives, '%Y', args.yearly, keep) keep.sort(key=attrgetter('ts'), reverse=True) to_delete = [a for a in archives if a not in keep] stats = Statistics() with Cache(repository, key, manifest, do_files=args.cache_files, lock_wait=self.lock_wait) as cache: for archive in keep: if args.output_list: logger.info('Keeping archive: %s' % format_archive(archive)) for archive in to_delete: if args.dry_run: if args.output_list: logger.info('Would prune: %s' % format_archive(archive)) else: if args.output_list: logger.info('Pruning archive: %s' % format_archive(archive)) Archive(repository, key, manifest, archive.name, cache).delete(stats) if to_delete and not args.dry_run: manifest.write() repository.commit(save_space=args.save_space) cache.commit() if args.stats: log_multi(DASHES, stats.summary.format(label='Deleted data:', stats=stats), str(cache), DASHES) return self.exit_code
[docs] def do_upgrade(self, args): """upgrade a repository from a previous version""" # mainly for upgrades from Attic repositories, # but also supports borg 0.xx -> 1.0 upgrade. repo = AtticRepositoryUpgrader(args.location.path, create=False) try: repo.upgrade(args.dry_run, inplace=args.inplace, progress=args.progress) except NotImplementedError as e: print("warning: %s" % e) repo = BorgRepositoryUpgrader(args.location.path, create=False) try: repo.upgrade(args.dry_run, inplace=args.inplace, progress=args.progress) except NotImplementedError as e: print("warning: %s" % e) return self.exit_code
[docs] def do_debug_dump_archive_items(self, args): """dump (decrypted, decompressed) archive items metadata (not: data)""" repository = self.open_repository(args) manifest, key = Manifest.load(repository) archive = Archive(repository, key, manifest, args.location.archive) for i, item_id in enumerate(archive.metadata[b'items']): data = key.decrypt(item_id, repository.get(item_id)) filename = '%06d_%s.items' % (i, hexlify(item_id).decode('ascii')) print('Dumping', filename) with open(filename, 'wb') as fd: fd.write(data) print('Done.') return EXIT_SUCCESS
[docs] def do_debug_get_obj(self, args): """get object contents from the repository and write it into file""" repository = self.open_repository(args) manifest, key = Manifest.load(repository) hex_id = args.id try: id = unhexlify(hex_id) except ValueError: print("object id %s is invalid." % hex_id) else: try: data = repository.get(id) except repository.ObjectNotFound: print("object %s not found." % hex_id) else: with open(args.path, "wb") as f: f.write(data) print("object %s fetched." % hex_id) return EXIT_SUCCESS
[docs] def do_debug_put_obj(self, args): """put file(s) contents into the repository""" repository = self.open_repository(args) manifest, key = Manifest.load(repository) for path in args.paths: with open(path, "rb") as f: data = f.read() h = sha256(data) # XXX hardcoded repository.put(h.digest(), data) print("object %s put." % h.hexdigest()) repository.commit() return EXIT_SUCCESS
[docs] def do_debug_delete_obj(self, args): """delete the objects with the given IDs from the repo""" repository = self.open_repository(args) manifest, key = Manifest.load(repository) modified = False for hex_id in args.ids: try: id = unhexlify(hex_id) except ValueError: print("object id %s is invalid." % hex_id) else: try: repository.delete(id) modified = True print("object %s deleted." % hex_id) except repository.ObjectNotFound: print("object %s not found." % hex_id) if modified: repository.commit() print('Done.') return EXIT_SUCCESS
[docs] def do_break_lock(self, args): """Break the repository lock (e.g. in case it was left by a dead borg.""" repository = self.open_repository(args, lock=False) try: repository.break_lock() Cache.break_lock(repository) finally: repository.close() return self.exit_code
helptext = {} helptext['patterns'] = textwrap.dedent(''' Exclusion patterns support four separate styles, fnmatch, shell, regular expressions and path prefixes. If followed by a colon (':') the first two characters of a pattern are used as a style selector. Explicit style selection is necessary when a non-default style is desired or when the desired pattern starts with two alphanumeric characters followed by a colon (i.e. `aa:something/*`). `Fnmatch <https://docs.python.org/3/library/fnmatch.html>`_, selector `fm:` These patterns use a variant of shell pattern syntax, with '*' matching any number of characters, '?' matching any single character, '[...]' matching any single character specified, including ranges, and '[!...]' matching any character not specified. For the purpose of these patterns, the path separator ('\\' for Windows and '/' on other systems) is not treated specially. Wrap meta-characters in brackets for a literal match (i.e. `[?]` to match the literal character `?`). For a path to match a pattern, it must completely match from start to end, or must match from the start to just before a path separator. Except for the root path, paths will never end in the path separator when matching is attempted. Thus, if a given pattern ends in a path separator, a '*' is appended before matching is attempted. Shell-style patterns, selector `sh:` Like fnmatch patterns these are similar to shell patterns. The difference is that the pattern may include `**/` for matching zero or more directory levels, `*` for matching zero or more arbitrary characters with the exception of any path separator. Regular expressions, selector `re:` Regular expressions similar to those found in Perl are supported. Unlike shell patterns regular expressions are not required to match the complete path and any substring match is sufficient. It is strongly recommended to anchor patterns to the start ('^'), to the end ('$') or both. Path separators ('\\' for Windows and '/' on other systems) in paths are always normalized to a forward slash ('/') before applying a pattern. The regular expression syntax is described in the `Python documentation for the re module <https://docs.python.org/3/library/re.html>`_. Prefix path, selector `pp:` This pattern style is useful to match whole sub-directories. The pattern `pp:/data/bar` matches `/data/bar` and everything therein. Exclusions can be passed via the command line option `--exclude`. When used from within a shell the patterns should be quoted to protect them from expansion. The `--exclude-from` option permits loading exclusion patterns from a text file with one pattern per line. Lines empty or starting with the number sign ('#') after removing whitespace on both ends are ignored. The optional style selector prefix is also supported for patterns loaded from a file. Due to whitespace removal paths with whitespace at the beginning or end can only be excluded using regular expressions. Examples: # Exclude '/home/user/file.o' but not '/home/user/file.odt': $ borg create -e '*.o' backup / # Exclude '/home/user/junk' and '/home/user/subdir/junk' but # not '/home/user/importantjunk' or '/etc/junk': $ borg create -e '/home/*/junk' backup / # Exclude the contents of '/home/user/cache' but not the directory itself: $ borg create -e /home/user/cache/ backup / # The file '/home/user/cache/important' is *not* backed up: $ borg create -e /home/user/cache/ backup / /home/user/cache/important # The contents of directories in '/home' are not backed up when their name # ends in '.tmp' $ borg create --exclude 're:^/home/[^/]+\.tmp/' backup / # Load exclusions from file $ cat >exclude.txt <<EOF # Comment line /home/*/junk *.tmp fm:aa:something/* re:^/home/[^/]\.tmp/ sh:/home/*/.thumbnails EOF $ borg create --exclude-from exclude.txt backup / ''')
[docs] def do_help(self, parser, commands, args): if not args.topic: parser.print_help() elif args.topic in self.helptext: print(self.helptext[args.topic]) elif args.topic in commands: if args.epilog_only: print(commands[args.topic].epilog) elif args.usage_only: commands[args.topic].epilog = None commands[args.topic].print_help() else: commands[args.topic].print_help() else: parser.error('No help available on %s' % (args.topic,)) return self.exit_code
[docs] def preprocess_args(self, args): deprecations = [ # ('--old', '--new', 'Warning: "--old" has been deprecated. Use "--new" instead.'), ] for i, arg in enumerate(args[:]): for old_name, new_name, warning in deprecations: if arg.startswith(old_name): args[i] = arg.replace(old_name, new_name) print(warning) return args
[docs] def build_parser(self, args=None, prog=None): common_parser = argparse.ArgumentParser(add_help=False, prog=prog) common_parser.add_argument('-v', '--verbose', '--info', dest='log_level', action='store_const', const='info', default='warning', help='enable informative (verbose) output, work on log level INFO') common_parser.add_argument('--debug', dest='log_level', action='store_const', const='debug', default='warning', help='enable debug output, work on log level DEBUG') common_parser.add_argument('--lock-wait', dest='lock_wait', type=int, metavar='N', default=1, help='wait for the lock, but max. N seconds (default: %(default)d).') common_parser.add_argument('--show-rc', dest='show_rc', action='store_true', default=False, help='show/log the return code (rc)') common_parser.add_argument('--no-files-cache', dest='cache_files', action='store_false', help='do not load/update the file metadata cache used to detect unchanged files') common_parser.add_argument('--umask', dest='umask', type=lambda s: int(s, 8), default=UMASK_DEFAULT, metavar='M', help='set umask to M (local and remote, default: %(default)04o)') common_parser.add_argument('--remote-path', dest='remote_path', default='borg', metavar='PATH', help='set remote path to executable (default: "%(default)s")') parser = argparse.ArgumentParser(prog=prog, description='Borg - Deduplicated Backups') parser.add_argument('-V', '--version', action='version', version='%(prog)s ' + __version__, help='show version number and exit') subparsers = parser.add_subparsers(title='required arguments', metavar='<command>') serve_epilog = textwrap.dedent(""" This command starts a repository server process. This command is usually not used manually. """) subparser = subparsers.add_parser('serve', parents=[common_parser], description=self.do_serve.__doc__, epilog=serve_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='start repository server process') subparser.set_defaults(func=self.do_serve) subparser.add_argument('--restrict-to-path', dest='restrict_to_paths', action='append', metavar='PATH', help='restrict repository access to PATH') init_epilog = textwrap.dedent(""" This command initializes an empty repository. A repository is a filesystem directory containing the deduplicated data from zero or more archives. Encryption can be enabled at repository init time. """) subparser = subparsers.add_parser('init', parents=[common_parser], description=self.do_init.__doc__, epilog=init_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='initialize empty repository') subparser.set_defaults(func=self.do_init) subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False), help='repository to create') subparser.add_argument('-e', '--encryption', dest='encryption', choices=('none', 'keyfile', 'repokey'), default='repokey', help='select encryption key mode (default: "%(default)s")') check_epilog = textwrap.dedent(""" The check command verifies the consistency of a repository and the corresponding archives. First, the underlying repository data files are checked: - For all segments the segment magic (header) is checked - For all objects stored in the segments, all metadata (e.g. crc and size) and all data is read. The read data is checked by size and CRC. Bit rot and other types of accidental damage can be detected this way. - If we are in repair mode and a integrity error is detected for a segment, we try to recover as many objects from the segment as possible. - In repair mode, it makes sure that the index is consistent with the data stored in the segments. - If you use a remote repo server via ssh:, the repo check is executed on the repo server without causing significant network traffic. - The repository check can be skipped using the --archives-only option. Second, the consistency and correctness of the archive metadata is verified: - Is the repo manifest present? If not, it is rebuilt from archive metadata chunks (this requires reading and decrypting of all metadata and data). - Check if archive metadata chunk is present. if not, remove archive from manifest. - For all files (items) in the archive, for all chunks referenced by these files, check if chunk is present (if not and we are in repair mode, replace it with a same-size chunk of zeros). This requires reading of archive and file metadata, but not data. - If we are in repair mode and we checked all the archives: delete orphaned chunks from the repo. - if you use a remote repo server via ssh:, the archive check is executed on the client machine (because if encryption is enabled, the checks will require decryption and this is always done client-side, because key access will be required). - The archive checks can be time consuming, they can be skipped using the --repository-only option. """) subparser = subparsers.add_parser('check', parents=[common_parser], description=self.do_check.__doc__, epilog=check_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='verify repository') subparser.set_defaults(func=self.do_check) subparser.add_argument('location', metavar='REPOSITORY_OR_ARCHIVE', nargs='?', default='', type=location_validator(), help='repository or archive to check consistency of') subparser.add_argument('--repository-only', dest='repo_only', action='store_true', default=False, help='only perform repository checks') subparser.add_argument('--archives-only', dest='archives_only', action='store_true', default=False, help='only perform archives checks') subparser.add_argument('--repair', dest='repair', action='store_true', default=False, help='attempt to repair any inconsistencies found') subparser.add_argument('--save-space', dest='save_space', action='store_true', default=False, help='work slower, but using less space') subparser.add_argument('--last', dest='last', type=int, default=None, metavar='N', help='only check last N archives (Default: all)') subparser.add_argument('-P', '--prefix', dest='prefix', type=str, help='only consider archive names starting with this prefix') change_passphrase_epilog = textwrap.dedent(""" The key files used for repository encryption are optionally passphrase protected. This command can be used to change this passphrase. """) subparser = subparsers.add_parser('change-passphrase', parents=[common_parser], description=self.do_change_passphrase.__doc__, epilog=change_passphrase_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='change repository passphrase') subparser.set_defaults(func=self.do_change_passphrase) subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False)) migrate_to_repokey_epilog = textwrap.dedent(""" This command migrates a repository from passphrase mode (not supported any more) to repokey mode. You will be first asked for the repository passphrase (to open it in passphrase mode). This is the same passphrase as you used to use for this repo before 1.0. It will then derive the different secrets from this passphrase. Then you will be asked for a new passphrase (twice, for safety). This passphrase will be used to protect the repokey (which contains these same secrets in encrypted form). You may use the same passphrase as you used to use, but you may also use a different one. After migrating to repokey mode, you can change the passphrase at any time. But please note: the secrets will always stay the same and they could always be derived from your (old) passphrase-mode passphrase. """) subparser = subparsers.add_parser('migrate-to-repokey', parents=[common_parser], description=self.do_migrate_to_repokey.__doc__, epilog=migrate_to_repokey_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='migrate passphrase-mode repository to repokey') subparser.set_defaults(func=self.do_migrate_to_repokey) subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False)) create_epilog = textwrap.dedent(""" This command creates a backup archive containing all files found while recursively traversing all paths specified. The archive will consume almost no disk space for files or parts of files that have already been stored in other archives. See the output of the "borg help patterns" command for more help on exclude patterns. """) subparser = subparsers.add_parser('create', parents=[common_parser], description=self.do_create.__doc__, epilog=create_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='create backup') subparser.set_defaults(func=self.do_create) subparser.add_argument('-s', '--stats', dest='stats', action='store_true', default=False, help='print statistics for the created archive') subparser.add_argument('-p', '--progress', dest='progress', action='store_true', default=False, help="""show progress display while creating the archive, showing Original, Compressed and Deduplicated sizes, followed by the Number of files seen and the path being processed, default: %(default)s""") subparser.add_argument('--list', dest='output_list', action='store_true', default=False, help='output verbose list of items (files, dirs, ...)') subparser.add_argument('--filter', dest='output_filter', metavar='STATUSCHARS', help='only display items with the given status characters') subparser.add_argument('-e', '--exclude', dest='excludes', type=parse_pattern, action='append', metavar="PATTERN", help='exclude paths matching PATTERN') subparser.add_argument('--exclude-from', dest='exclude_files', type=argparse.FileType('r'), action='append', metavar='EXCLUDEFILE', help='read exclude patterns from EXCLUDEFILE, one per line') subparser.add_argument('--exclude-caches', dest='exclude_caches', action='store_true', default=False, help='exclude directories that contain a CACHEDIR.TAG file (http://www.brynosaurus.com/cachedir/spec.html)') subparser.add_argument('--exclude-if-present', dest='exclude_if_present', metavar='FILENAME', action='append', type=str, help='exclude directories that contain the specified file') subparser.add_argument('--keep-tag-files', dest='keep_tag_files', action='store_true', default=False, help='keep tag files of excluded caches/directories') subparser.add_argument('-c', '--checkpoint-interval', dest='checkpoint_interval', type=int, default=300, metavar='SECONDS', help='write checkpoint every SECONDS seconds (Default: 300)') subparser.add_argument('-x', '--one-file-system', dest='one_file_system', action='store_true', default=False, help='stay in same file system, do not cross mount points') subparser.add_argument('--numeric-owner', dest='numeric_owner', action='store_true', default=False, help='only store numeric user and group identifiers') subparser.add_argument('--timestamp', dest='timestamp', type=timestamp, default=None, metavar='yyyy-mm-ddThh:mm:ss', help='manually specify the archive creation date/time (UTC). ' 'alternatively, give a reference file/directory.') subparser.add_argument('--chunker-params', dest='chunker_params', type=ChunkerParams, default=CHUNKER_PARAMS, metavar='CHUNK_MIN_EXP,CHUNK_MAX_EXP,HASH_MASK_BITS,HASH_WINDOW_SIZE', help='specify the chunker parameters. default: %d,%d,%d,%d' % CHUNKER_PARAMS) subparser.add_argument('-C', '--compression', dest='compression', type=CompressionSpec, default=dict(name='none'), metavar='COMPRESSION', help='select compression algorithm (and level): ' 'none == no compression (default), ' 'lz4 == lz4, ' 'zlib == zlib (default level 6), ' 'zlib,0 .. zlib,9 == zlib (with level 0..9), ' 'lzma == lzma (default level 6), ' 'lzma,0 .. lzma,9 == lzma (with level 0..9).') subparser.add_argument('--read-special', dest='read_special', action='store_true', default=False, help='open and read special files as if they were regular files') subparser.add_argument('-n', '--dry-run', dest='dry_run', action='store_true', default=False, help='do not create a backup archive') subparser.add_argument('location', metavar='ARCHIVE', type=location_validator(archive=True), help='name of archive to create (must be also a valid directory name)') subparser.add_argument('paths', metavar='PATH', nargs='+', type=str, help='paths to archive') extract_epilog = textwrap.dedent(""" This command extracts the contents of an archive. By default the entire archive is extracted but a subset of files and directories can be selected by passing a list of ``PATHs`` as arguments. The file selection can further be restricted by using the ``--exclude`` option. See the output of the "borg help patterns" command for more help on exclude patterns. """) subparser = subparsers.add_parser('extract', parents=[common_parser], description=self.do_extract.__doc__, epilog=extract_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='extract archive contents') subparser.set_defaults(func=self.do_extract) subparser.add_argument('--list', dest='output_list', action='store_true', default=False, help='output verbose list of items (files, dirs, ...)') subparser.add_argument('-n', '--dry-run', dest='dry_run', default=False, action='store_true', help='do not actually change any files') subparser.add_argument('-e', '--exclude', dest='excludes', type=parse_pattern, action='append', metavar="PATTERN", help='exclude paths matching PATTERN') subparser.add_argument('--exclude-from', dest='exclude_files', type=argparse.FileType('r'), action='append', metavar='EXCLUDEFILE', help='read exclude patterns from EXCLUDEFILE, one per line') subparser.add_argument('--numeric-owner', dest='numeric_owner', action='store_true', default=False, help='only obey numeric user and group identifiers') subparser.add_argument('--strip-components', dest='strip_components', type=int, default=0, metavar='NUMBER', help='Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped.') subparser.add_argument('--stdout', dest='stdout', action='store_true', default=False, help='write all extracted data to stdout') subparser.add_argument('--sparse', dest='sparse', action='store_true', default=False, help='create holes in output sparse file from all-zero chunks') subparser.add_argument('location', metavar='ARCHIVE', type=location_validator(archive=True), help='archive to extract') subparser.add_argument('paths', metavar='PATH', nargs='*', type=str, help='paths to extract; patterns are supported') rename_epilog = textwrap.dedent(""" This command renames an archive in the repository. """) subparser = subparsers.add_parser('rename', parents=[common_parser], description=self.do_rename.__doc__, epilog=rename_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='rename archive') subparser.set_defaults(func=self.do_rename) subparser.add_argument('location', metavar='ARCHIVE', type=location_validator(archive=True), help='archive to rename') subparser.add_argument('name', metavar='NEWNAME', type=archivename_validator(), help='the new archive name to use') delete_epilog = textwrap.dedent(""" This command deletes an archive from the repository or the complete repository. Disk space is reclaimed accordingly. If you delete the complete repository, the local cache for it (if any) is also deleted. """) subparser = subparsers.add_parser('delete', parents=[common_parser], description=self.do_delete.__doc__, epilog=delete_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='delete archive') subparser.set_defaults(func=self.do_delete) subparser.add_argument('-p', '--progress', dest='progress', action='store_true', default=False, help="""show progress display while deleting a single archive""") subparser.add_argument('-s', '--stats', dest='stats', action='store_true', default=False, help='print statistics for the deleted archive') subparser.add_argument('-c', '--cache-only', dest='cache_only', action='store_true', default=False, help='delete only the local cache for the given repository') subparser.add_argument('--save-space', dest='save_space', action='store_true', default=False, help='work slower, but using less space') subparser.add_argument('location', metavar='TARGET', nargs='?', default='', type=location_validator(), help='archive or repository to delete') list_epilog = textwrap.dedent(""" This command lists the contents of a repository or an archive. """) subparser = subparsers.add_parser('list', parents=[common_parser], description=self.do_list.__doc__, epilog=list_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='list archive or repository contents') subparser.set_defaults(func=self.do_list) subparser.add_argument('--short', dest='short', action='store_true', default=False, help='only print file/directory names, nothing else') subparser.add_argument('--list-format', dest='listformat', type=str, help="""specify format for archive file listing (default: "{mode} {user:6} {group:6} {size:8d} {isomtime} {path}{extra}{NEWLINE}") Special "{formatkeys}" exists to list available keys""") subparser.add_argument('-P', '--prefix', dest='prefix', type=str, help='only consider archive names starting with this prefix') subparser.add_argument('location', metavar='REPOSITORY_OR_ARCHIVE', nargs='?', default='', type=location_validator(), help='repository/archive to list contents of') mount_epilog = textwrap.dedent(""" This command mounts an archive as a FUSE filesystem. This can be useful for browsing an archive or restoring individual files. Unless the ``--foreground`` option is given the command will run in the background until the filesystem is ``umounted``. """) subparser = subparsers.add_parser('mount', parents=[common_parser], description=self.do_mount.__doc__, epilog=mount_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='mount repository') subparser.set_defaults(func=self.do_mount) subparser.add_argument('location', metavar='REPOSITORY_OR_ARCHIVE', type=location_validator(), help='repository/archive to mount') subparser.add_argument('mountpoint', metavar='MOUNTPOINT', type=str, help='where to mount filesystem') subparser.add_argument('-f', '--foreground', dest='foreground', action='store_true', default=False, help='stay in foreground, do not daemonize') subparser.add_argument('-o', dest='options', type=str, help='Extra mount options') info_epilog = textwrap.dedent(""" This command displays some detailed information about the specified archive. """) subparser = subparsers.add_parser('info', parents=[common_parser], description=self.do_info.__doc__, epilog=info_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='show archive information') subparser.set_defaults(func=self.do_info) subparser.add_argument('location', metavar='ARCHIVE', type=location_validator(archive=True), help='archive to display information about') break_lock_epilog = textwrap.dedent(""" This command breaks the repository and cache locks. Please use carefully and only while no borg process (on any machine) is trying to access the Cache or the Repository. """) subparser = subparsers.add_parser('break-lock', parents=[common_parser], description=self.do_break_lock.__doc__, epilog=break_lock_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='break repository and cache locks') subparser.set_defaults(func=self.do_break_lock) subparser.add_argument('location', metavar='REPOSITORY', type=location_validator(archive=False), help='repository for which to break the locks') prune_epilog = textwrap.dedent(""" The prune command prunes a repository by deleting archives not matching any of the specified retention options. This command is normally used by automated backup scripts wanting to keep a certain number of historic backups. As an example, "-d 7" means to keep the latest backup on each day, up to 7 most recent days with backups (days without backups do not count). The rules are applied from hourly to yearly, and backups selected by previous rules do not count towards those of later rules. The time that each backup completes is used for pruning purposes. Dates and times are interpreted in the local timezone, and weeks go from Monday to Sunday. Specifying a negative number of archives to keep means that there is no limit. The "--keep-within" option takes an argument of the form "<int><char>", where char is "H", "d", "w", "m", "y". For example, "--keep-within 2d" means to keep all archives that were created within the past 48 hours. "1m" is taken to mean "31d". The archives kept with this option do not count towards the totals specified by any other options. If a prefix is set with -P, then only archives that start with the prefix are considered for deletion and only those archives count towards the totals specified by the rules. Otherwise, *all* archives in the repository are candidates for deletion! """) subparser = subparsers.add_parser('prune', parents=[common_parser], description=self.do_prune.__doc__, epilog=prune_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='prune archives') subparser.set_defaults(func=self.do_prune) subparser.add_argument('-n', '--dry-run', dest='dry_run', default=False, action='store_true', help='do not change repository') subparser.add_argument('-s', '--stats', dest='stats', action='store_true', default=False, help='print statistics for the deleted archive') subparser.add_argument('--list', dest='output_list', action='store_true', default=False, help='output verbose list of archives it keeps/prunes') subparser.add_argument('--keep-within', dest='within', type=str, metavar='WITHIN', help='keep all archives within this time interval') subparser.add_argument('-H', '--keep-hourly', dest='hourly', type=int, default=0, help='number of hourly archives to keep') subparser.add_argument('-d', '--keep-daily', dest='daily', type=int, default=0, help='number of daily archives to keep') subparser.add_argument('-w', '--keep-weekly', dest='weekly', type=int, default=0, help='number of weekly archives to keep') subparser.add_argument('-m', '--keep-monthly', dest='monthly', type=int, default=0, help='number of monthly archives to keep') subparser.add_argument('-y', '--keep-yearly', dest='yearly', type=int, default=0, help='number of yearly archives to keep') subparser.add_argument('-P', '--prefix', dest='prefix', type=str, help='only consider archive names starting with this prefix') subparser.add_argument('--save-space', dest='save_space', action='store_true', default=False, help='work slower, but using less space') subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False), help='repository to prune') upgrade_epilog = textwrap.dedent(""" Upgrade an existing Borg repository. This currently supports converting an Attic repository to Borg and also helps with converting Borg 0.xx to 1.0. Currently, only LOCAL repositories can be upgraded (issue #465). It will change the magic strings in the repository's segments to match the new Borg magic strings. The keyfiles found in $ATTIC_KEYS_DIR or ~/.attic/keys/ will also be converted and copied to $BORG_KEYS_DIR or ~/.config/borg/keys. The cache files are converted, from $ATTIC_CACHE_DIR or ~/.cache/attic to $BORG_CACHE_DIR or ~/.cache/borg, but the cache layout between Borg and Attic changed, so it is possible the first backup after the conversion takes longer than expected due to the cache resync. Upgrade should be able to resume if interrupted, although it will still iterate over all segments. If you want to start from scratch, use `borg delete` over the copied repository to make sure the cache files are also removed: borg delete borg Unless ``--inplace`` is specified, the upgrade process first creates a backup copy of the repository, in REPOSITORY.upgrade-DATETIME, using hardlinks. This takes longer than in place upgrades, but is much safer and gives progress information (as opposed to ``cp -al``). Once you are satisfied with the conversion, you can safely destroy the backup copy. WARNING: Running the upgrade in place will make the current copy unusable with older version, with no way of going back to previous versions. This can PERMANENTLY DAMAGE YOUR REPOSITORY! Attic CAN NOT READ BORG REPOSITORIES, as the magic strings have changed. You have been warned.""") subparser = subparsers.add_parser('upgrade', parents=[common_parser], description=self.do_upgrade.__doc__, epilog=upgrade_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='upgrade repository format') subparser.set_defaults(func=self.do_upgrade) subparser.add_argument('-p', '--progress', dest='progress', action='store_true', default=False, help="""show progress display while upgrading the repository""") subparser.add_argument('-n', '--dry-run', dest='dry_run', default=False, action='store_true', help='do not change repository') subparser.add_argument('-i', '--inplace', dest='inplace', default=False, action='store_true', help="""rewrite repository in place, with no chance of going back to older versions of the repository.""") subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False), help='path to the repository to be upgraded') subparser = subparsers.add_parser('help', parents=[common_parser], description='Extra help') subparser.add_argument('--epilog-only', dest='epilog_only', action='store_true', default=False) subparser.add_argument('--usage-only', dest='usage_only', action='store_true', default=False) subparser.set_defaults(func=functools.partial(self.do_help, parser, subparsers.choices)) subparser.add_argument('topic', metavar='TOPIC', type=str, nargs='?', help='additional help on TOPIC') debug_dump_archive_items_epilog = textwrap.dedent(""" This command dumps raw (but decrypted and decompressed) archive items (only metadata) to files. """) subparser = subparsers.add_parser('debug-dump-archive-items', parents=[common_parser], description=self.do_debug_dump_archive_items.__doc__, epilog=debug_dump_archive_items_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='dump archive items (metadata) (debug)') subparser.set_defaults(func=self.do_debug_dump_archive_items) subparser.add_argument('location', metavar='ARCHIVE', type=location_validator(archive=True), help='archive to dump') debug_get_obj_epilog = textwrap.dedent(""" This command gets an object from the repository. """) subparser = subparsers.add_parser('debug-get-obj', parents=[common_parser], description=self.do_debug_get_obj.__doc__, epilog=debug_get_obj_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='get object from repository (debug)') subparser.set_defaults(func=self.do_debug_get_obj) subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False), help='repository to use') subparser.add_argument('id', metavar='ID', type=str, help='hex object ID to get from the repo') subparser.add_argument('path', metavar='PATH', type=str, help='file to write object data into') debug_put_obj_epilog = textwrap.dedent(""" This command puts objects into the repository. """) subparser = subparsers.add_parser('debug-put-obj', parents=[common_parser], description=self.do_debug_put_obj.__doc__, epilog=debug_put_obj_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='put object to repository (debug)') subparser.set_defaults(func=self.do_debug_put_obj) subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False), help='repository to use') subparser.add_argument('paths', metavar='PATH', nargs='+', type=str, help='file(s) to read and create object(s) from') debug_delete_obj_epilog = textwrap.dedent(""" This command deletes objects from the repository. """) subparser = subparsers.add_parser('debug-delete-obj', parents=[common_parser], description=self.do_debug_delete_obj.__doc__, epilog=debug_delete_obj_epilog, formatter_class=argparse.RawDescriptionHelpFormatter, help='delete object from repository (debug)') subparser.set_defaults(func=self.do_debug_delete_obj) subparser.add_argument('location', metavar='REPOSITORY', nargs='?', default='', type=location_validator(archive=False), help='repository to use') subparser.add_argument('ids', metavar='IDs', nargs='+', type=str, help='hex object ID(s) to delete from the repo') return parser
[docs] def get_args(self, argv, cmd): """usually, just returns argv, except if we deal with a ssh forced command for borg serve.""" result = self.parse_args(argv[1:]) if cmd is not None and result.func == self.do_serve: forced_result = result argv = shlex.split(cmd) result = self.parse_args(argv[1:]) if result.func != forced_result.func: # someone is trying to execute a different borg subcommand, don't do that! return forced_result # the only thing we take from the forced "borg serve" ssh command is --restrict-to-path result.restrict_to_paths = forced_result.restrict_to_paths return result
[docs] def parse_args(self, args=None): # We can't use argparse for "serve" since we don't want it to show up in "Available commands" if args: args = self.preprocess_args(args) parser = self.build_parser(args) args = parser.parse_args(args or ['-h']) update_excludes(args) return args
[docs] def run(self, args): os.umask(args.umask) # early, before opening files self.lock_wait = args.lock_wait setup_logging(level=args.log_level, is_serve=args.func == self.do_serve) # do not use loggers before this! check_extension_modules() if is_slow_msgpack(): logger.warning("Using a pure-python msgpack! This will result in lower performance.") return args.func(args)
[docs]def sig_info_handler(signum, stack): # pragma: no cover """search the stack for infos about the currently processed file and print them""" for frame in inspect.getouterframes(stack): func, loc = frame[3], frame[0].f_locals if func in ('process_file', '_process', ): # create op path = loc['path'] try: pos = loc['fd'].tell() total = loc['st'].st_size except Exception: pos, total = 0, 0 logger.info("{0} {1}/{2}".format(path, format_file_size(pos), format_file_size(total))) break if func in ('extract_item', ): # extract op path = loc['item'][b'path'] try: pos = loc['fd'].tell() except Exception: pos = 0 logger.info("{0} {1}/???".format(path, format_file_size(pos))) break
[docs]def setup_signal_handlers(): # pragma: no cover sigs = [] if hasattr(signal, 'SIGUSR1'): sigs.append(signal.SIGUSR1) # kill -USR1 pid if hasattr(signal, 'SIGINFO'): sigs.append(signal.SIGINFO) # kill -INFO pid (or ctrl-t) for sig in sigs: signal.signal(sig, sig_info_handler)
[docs]def main(): # pragma: no cover # Make sure stdout and stderr have errors='replace') to avoid unicode # issues when print()-ing unicode file names sys.stdout = io.TextIOWrapper(sys.stdout.buffer, sys.stdout.encoding, 'replace', line_buffering=True) sys.stderr = io.TextIOWrapper(sys.stderr.buffer, sys.stderr.encoding, 'replace', line_buffering=True) setup_signal_handlers() archiver = Archiver() msg = None args = archiver.get_args(sys.argv, os.environ.get('SSH_ORIGINAL_COMMAND')) try: exit_code = archiver.run(args) except Error as e: msg = e.get_message() if e.traceback: msg += "\n%s\n%s" % (traceback.format_exc(), sysinfo()) exit_code = e.exit_code except RemoteRepository.RPCError as e: msg = '%s\n%s' % (str(e), sysinfo()) exit_code = EXIT_ERROR except Exception: msg = 'Local Exception.\n%s\n%s' % (traceback.format_exc(), sysinfo()) exit_code = EXIT_ERROR except KeyboardInterrupt: msg = 'Keyboard interrupt.\n%s\n%s' % (traceback.format_exc(), sysinfo()) exit_code = EXIT_ERROR if msg: logger.error(msg) if args.show_rc: exit_msg = 'terminating with %s status, rc %d' if exit_code == EXIT_SUCCESS: logger.info(exit_msg % ('success', exit_code)) elif exit_code == EXIT_WARNING: logger.warning(exit_msg % ('warning', exit_code)) elif exit_code == EXIT_ERROR: logger.error(exit_msg % ('error', exit_code)) else: # if you see 666 in output, it usually means exit_code was None logger.error(exit_msg % ('abnormal', exit_code or 666)) sys.exit(exit_code)
if __name__ == '__main__': main()