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 if hasattr(fuse, 'FUSE'):
13 print('error: python fuse module appears to be fusepy, not python-fuse\n'
14 ' please install https://github.com/libfuse/python-fuse',
17 print('error: fuse module may need to be upgraded (no fuse.__version__)',
20 fuse.fuse_python_api = (0, 2)
22 if sys.version_info[0] > 2:
24 fuse_ver = fuse.__version__.split('.')
25 fuse_ver_maj = int(fuse_ver[0])
27 log('error: cannot determine the fuse major version; please report',
30 if len(fuse_ver) < 3 or fuse_ver_maj < 1:
31 print("error: fuse module can't handle binary data; please upgrade to 1.0+\n",
35 from bup import options, git, vfs, xstat
36 from bup.compat import argv_bytes, fsdecode
37 from bup.helpers import log
38 from bup.repo import LocalRepo
41 # FIXME: self.meta and want_meta?
43 # The path handling is just wrong, but the current fuse module can't
46 class BupFs(fuse.Fuse):
47 def __init__(self, repo, verbose=0, fake_metadata=False):
48 fuse.Fuse.__init__(self)
50 self.verbose = verbose
51 self.fake_metadata = fake_metadata
53 def getattr(self, path):
54 path = argv_bytes(path)
56 log('--getattr(%r)\n' % path)
57 res = vfs.resolve(self.repo, path, want_meta=(not self.fake_metadata),
62 if self.fake_metadata:
63 item = vfs.augment_item_meta(self.repo, item, include_size=True)
65 item = vfs.ensure_item_has_metadata(self.repo, item,
68 # FIXME: do we want/need to do anything more with nlink?
69 st = fuse.Stat(st_mode=meta.mode, st_nlink=1, st_size=meta.size)
70 st.st_mode = meta.mode
71 st.st_uid = meta.uid or 0
72 st.st_gid = meta.gid or 0
73 st.st_atime = max(0, xstat.fstime_floor_secs(meta.atime))
74 st.st_mtime = max(0, xstat.fstime_floor_secs(meta.mtime))
75 st.st_ctime = max(0, xstat.fstime_floor_secs(meta.ctime))
78 def readdir(self, path, offset):
79 path = argv_bytes(path)
80 assert not offset # We don't return offsets, so offset should be unused
81 res = vfs.resolve(self.repo, path, follow=False)
82 dir_name, dir_item = res[-1]
85 yield fuse.Direntry('..')
86 # FIXME: make sure want_meta=False is being completely respected
87 for ent_name, ent_item in vfs.contents(self.repo, dir_item, want_meta=False):
88 fusename = fsdecode(ent_name.replace(b'/', b'-'))
89 yield fuse.Direntry(fusename)
91 def readlink(self, path):
92 path = argv_bytes(path)
94 log('--readlink(%r)\n' % path)
95 res = vfs.resolve(self.repo, path, follow=False)
99 return fsdecode(vfs.readlink(self.repo, item))
101 def open(self, path, flags):
102 path = argv_bytes(path)
104 log('--open(%r)\n' % path)
105 res = vfs.resolve(self.repo, path, follow=False)
109 accmode = os.O_RDONLY | os.O_WRONLY | os.O_RDWR
110 if (flags & accmode) != os.O_RDONLY:
112 # Return None since read doesn't need the file atm...
113 # If we *do* return the file, it'll show up as the last argument
114 #return vfs.fopen(repo, item)
117 def read(self, path, size, offset):
118 path = argv_bytes(path)
120 log('--read(%r)\n' % path)
121 res = vfs.resolve(self.repo, path, follow=False)
125 with vfs.fopen(self.repo, item) as f:
131 bup fuse [-d] [-f] <mountpoint>
133 f,foreground run in foreground
134 d,debug run in the foreground and display FUSE debug information
135 o,allow-other allow other users to access the filesystem
136 meta report original metadata for paths when available
137 v,verbose increase log output (can be used more than once)
141 o = options.Options(optspec)
142 opt, flags, extra = o.parse_bytes(argv[1:])
146 # Set stderr to be line buffered, even if it's not connected to the console
147 # so that we'll be able to see diagnostics in a timely fashion.
148 errfd = sys.stderr.fileno()
150 sys.stderr = os.fdopen(errfd, 'w', 1)
153 o.fatal('only one mount point argument expected')
155 git.check_repo_or_die()
156 with LocalRepo() as repo:
157 f = BupFs(repo=repo, verbose=opt.verbose, fake_metadata=(not opt.meta))
159 # This is likely wrong, but the fuse module doesn't currently accept bytes
160 f.fuse_args.mountpoint = extra[0]
163 f.fuse_args.add('debug')
165 f.fuse_args.setmod('foreground')
166 f.multithreaded = False
168 f.fuse_args.add('allow_other')