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mount -o versions: give clear error msg instead of crashing

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it does not make sense to request versions view if you only
look at 1 archive, but the code shall not crash in that case
as it did, but give a clear error msg.
This commit is contained in:
Thomas Waldmann 2022-05-15 00:37:45 +02:00
parent 594d83aad5
commit 2bed467e92
1 changed files with 4 additions and 1 deletions

5
src/borg/fuse.py
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@ -35,7 +35,7 @@ from .crypto.low_level import blake2b_128
from .archiver import Archiver from .archiver import Archiver
from .archive import Archive, get_item_uid_gid from .archive import Archive, get_item_uid_gid
from .hashindex import FuseVersionsIndex from .hashindex import FuseVersionsIndex
from .helpers import daemonize, daemonizing, hardlinkable, signal_handler, format_file_size from .helpers import daemonize, daemonizing, hardlinkable, signal_handler, format_file_size, Error
from .helpers import msgpack from .helpers import msgpack
from .item import Item from .item import Item
from .lrucache import LRUCache from .lrucache import LRUCache
@ -272,6 +272,9 @@ class FuseBackend:
def _create_filesystem(self): def _create_filesystem(self):
self._create_dir(parent=1) # first call, create root dir (inode == 1) self._create_dir(parent=1) # first call, create root dir (inode == 1)
if self._args.location.archive: if self._args.location.archive:
if self.versions:
raise Error("for versions view, do not specify a single archive, "
"but always give the repository as location.")
self._process_archive(self._args.location.archive) self._process_archive(self._args.location.archive)
else: else:
self.versions_index = FuseVersionsIndex() self.versions_index = FuseVersionsIndex()