2 from __future__ import absolute_import, print_function
8 print('error: cannot find the python "fuse" module; please install it',
11 if not hasattr(fuse, '__version__'):
12 print('error: fuse module is too old for fuse.__version__', file=sys.stderr)
14 fuse.fuse_python_api = (0, 2)
16 if sys.version_info[0] > 2:
18 fuse_ver = fuse.__version__.split('.')
19 fuse_ver_maj = int(fuse_ver[0])
21 log('error: cannot determine the fuse major version; please report',
24 if len(fuse_ver) < 3 or fuse_ver_maj < 1:
25 print("error: fuse module can't handle binary data; please upgrade to 1.0+\n",
29 from bup import options, git, vfs, xstat
30 from bup.compat import argv_bytes, fsdecode
31 from bup.helpers import log
32 from bup.repo import LocalRepo
35 # FIXME: self.meta and want_meta?
37 # The path handling is just wrong, but the current fuse module can't
40 class BupFs(fuse.Fuse):
41 def __init__(self, repo, verbose=0, fake_metadata=False):
42 fuse.Fuse.__init__(self)
44 self.verbose = verbose
45 self.fake_metadata = fake_metadata
47 def getattr(self, path):
48 path = argv_bytes(path)
50 log('--getattr(%r)\n' % path)
51 res = vfs.resolve(self.repo, path, want_meta=(not self.fake_metadata),
56 if self.fake_metadata:
57 item = vfs.augment_item_meta(self.repo, item, include_size=True)
59 item = vfs.ensure_item_has_metadata(self.repo, item,
62 # FIXME: do we want/need to do anything more with nlink?
63 st = fuse.Stat(st_mode=meta.mode, st_nlink=1, st_size=meta.size)
64 st.st_mode = meta.mode
65 st.st_uid = meta.uid or 0
66 st.st_gid = meta.gid or 0
67 st.st_atime = max(0, xstat.fstime_floor_secs(meta.atime))
68 st.st_mtime = max(0, xstat.fstime_floor_secs(meta.mtime))
69 st.st_ctime = max(0, xstat.fstime_floor_secs(meta.ctime))
72 def readdir(self, path, offset):
73 path = argv_bytes(path)
74 assert not offset # We don't return offsets, so offset should be unused
75 res = vfs.resolve(self.repo, path, follow=False)
76 dir_name, dir_item = res[-1]
79 yield fuse.Direntry('..')
80 # FIXME: make sure want_meta=False is being completely respected
81 for ent_name, ent_item in vfs.contents(self.repo, dir_item, want_meta=False):
82 fusename = fsdecode(ent_name.replace(b'/', b'-'))
83 yield fuse.Direntry(fusename)
85 def readlink(self, path):
86 path = argv_bytes(path)
88 log('--readlink(%r)\n' % path)
89 res = vfs.resolve(self.repo, path, follow=False)
93 return fsdecode(vfs.readlink(self.repo, item))
95 def open(self, path, flags):
96 path = argv_bytes(path)
98 log('--open(%r)\n' % path)
99 res = vfs.resolve(self.repo, path, follow=False)
103 accmode = os.O_RDONLY | os.O_WRONLY | os.O_RDWR
104 if (flags & accmode) != os.O_RDONLY:
106 # Return None since read doesn't need the file atm...
107 # If we *do* return the file, it'll show up as the last argument
108 #return vfs.fopen(repo, item)
110 def read(self, path, size, offset):
111 path = argv_bytes(path)
113 log('--read(%r)\n' % path)
114 res = vfs.resolve(self.repo, path, follow=False)
118 with vfs.fopen(self.repo, item) as f:
124 bup fuse [-d] [-f] <mountpoint>
126 f,foreground run in foreground
127 d,debug run in the foreground and display FUSE debug information
128 o,allow-other allow other users to access the filesystem
129 meta report original metadata for paths when available
130 v,verbose increase log output (can be used more than once)
134 o = options.Options(optspec)
135 opt, flags, extra = o.parse_bytes(argv[1:])
139 # Set stderr to be line buffered, even if it's not connected to the console
140 # so that we'll be able to see diagnostics in a timely fashion.
141 errfd = sys.stderr.fileno()
143 sys.stderr = os.fdopen(errfd, 'w', 1)
146 o.fatal('only one mount point argument expected')
148 git.check_repo_or_die()
150 f = BupFs(repo=repo, verbose=opt.verbose, fake_metadata=(not opt.meta))
152 # This is likely wrong, but the fuse module doesn't currently accept bytes
153 f.fuse_args.mountpoint = extra[0]
156 f.fuse_args.add('debug')
158 f.fuse_args.setmod('foreground')
159 f.multithreaded = False
161 f.fuse_args.add('allow_other')