1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
|
#!/usr/bin/env python
import base
import fuse
fuse.fuse_python_api = (0, 2)
from datetime import datetime
import time
from os import errno
import sys
from stat import *
def showtb(f):
def run(*args, **kwargs):
print
print "-"*80
print f, args, kwargs
try:
ret = f(*args, **kwargs)
print "\tReturned:", repr(ret)
return ret
except Exception, e:
print e
raise
print "-"*80
print
return run
"""
::*'''<code>open(path, flags)</code>'''
::*'''<code>create(path, flags, mode)</code>'''
::*'''<code>read(path, length, offset, fh=None)</code>'''
::*'''<code>write(path, buf, offset, fh=None)</code>'''
::*'''<code>fgetattr(path, fh=None)</code>'''
::*'''<code>ftruncate(path, len, fh=None)</code>'''
::*'''<code>flush(path, fh=None)</code>'''
::*'''<code>release(path, fh=None)</code>'''
::*'''<code>fsync(path, fdatasync, fh=None)</code>'''
"""
class FuseFile(object):
def __init__(self, f):
self.f = f
_run_t = time.time()
class FSFUSE(fuse.Fuse):
def __init__(self, fs, *args, **kwargs):
fuse.Fuse.__init__(self, *args, **kwargs)
self._fs = fs
@showtb
def fsinit(self):
return 0
def __getattr__(self, name):
print name
raise AttributeError
#@showtb
def getattr(self, path):
if not self._fs.exists(path):
return -errno.ENOENT
class Stat(fuse.Stat):
def __init__(self, context, fs, path):
fuse.Stat.__init__(self)
info = fs.getinfo(path)
isdir = fs.isdir(path)
fsize = fs.getsize(path) or 1024
self.st_ino = 0
self.st_dev = 0
self.st_nlink = 2 if isdir else 1
self.st_blksize = fsize
self.st_mode = info.get('st_mode', S_IFDIR | 0755 if isdir else S_IFREG | 0666)
print self.st_mode
self.st_uid = context['uid']
self.st_gid = context['gid']
self.st_rdev = 0
self.st_size = fsize
self.st_blocks = 1
for key, value in info.iteritems():
if not key.startswith('_'):
setattr(self, key, value)
def do_time(attr, key):
if not hasattr(self, attr):
if key in info:
info_t = info[key]
setattr(self, attr, time.mktime(info_t.timetuple()))
else:
setattr(self, attr, _run_t)
do_time('st_atime', 'accessed_time')
do_time('st_mtime', 'modified_time')
do_time('st_ctime', 'created_time')
#for v in dir(self):
# if not v.startswith('_'):
# print v, getattr(self, v)
return Stat(self.GetContext(), self._fs, path)
@showtb
def chmod(self, path, mode):
return 0
@showtb
def chown(self, path, user, group):
return 0
@showtb
def utime(self, path, times):
return 0
@showtb
def utimens(self, path, times):
return 0
@showtb
def fsyncdir(self):
pass
@showtb
def bmap(self):
return 0
@showtb
def ftruncate(self, path, flags, fh):
if fh is not None:
fh.truncate()
fh.flush()
return 0
def fsdestroy(self):
return 0
@showtb
def statfs(self):
return (0, 0, 0, 0, 0, 0, 0)
#def setattr
#
#
#@showtb
#def getdir(self, path, offset):
# paths = ['.', '..']
# paths += self._fs.listdir(path)
# print repr(paths)
#
# for p in paths:
# yield fuse.Direntry(p)
@showtb
def opendir(self, path):
return 0
@showtb
def getxattr(self, path, name, default):
return self._fs.getattr(path, name, default)
@showtb
def setxattr(self, path, name, value):
self._fs.setattr(path, name)
return 0
@showtb
def removeattr(self, path, name):
self._fs.removeattr(path, name)
return 0
@showtb
def listxattr(self, path, something):
return self._fs.listattrs(path)
@showtb
def open(self, path, flags):
return self._fs.open(path, flags=flags)
@showtb
def create(self, path, flags, mode):
return self._fs.open(path, "w")
@showtb
def read(self, path, length, offset, fh=None):
if fh:
fh.seek(offset)
return fh.read(length)
@showtb
def write(self, path, buf, offset, fh=None):
if fh:
fh.seek(offset)
# FUSE seems to expect a return value of the number of bytes written,
# but Python file objects don't return that information,
# so we will assume all bytes are written...
bytes_written = fh.write(buf) or len(buf)
return bytes_written
@showtb
def release(self, path, flags, fh=None):
if fh:
fh.close()
return 0
@showtb
def flush(self, path, fh=None):
if fh:
try:
fh.flush()
except base.FSError:
return 0
return 0
@showtb
def access(self, path, *args, **kwargs):
return 0
#@showtb
def readdir(self, path, offset):
paths = ['.', '..']
paths += self._fs.listdir(path)
return [fuse.Direntry(p) for p in paths]
#@showtb
#def fgetattr(self, path, fh=None):
# fh.flush()
# return self.getattr(path)
@showtb
def readlink(self, path):
return path
@showtb
def symlink(self, path, path1):
return 0
@showtb
def mknod(self, path, mode, rdev):
f = None
try:
f = self._fs.open(path, mode)
finally:
f.close()
return 0
@showtb
def mkdir(self, path, mode):
self._fs.mkdir(path, mode)
return 0
@showtb
def rmdir(self, path):
self._fs.removedir(path, True)
return 0
@showtb
def unlink(self, path):
try:
self._fs.remove(path)
except base.FSError:
return 0
return 0
#symlink(target, name)
@showtb
def rename(self, old, new):
self._fs.rename(old, new)
return 0
#@showtb
#def read(self, path, size, offset):
# pass
def main(fs):
usage="""
FSFS: Exposes an FS
""" + fuse.Fuse.fusage
server = FSFUSE(fs, version="%prog 0.1",
usage=usage, dash_s_do='setsingle')
#server.readdir('.', 0)
server.parse(errex=1)
server.main()
if __name__ == "__main__":
import memoryfs
import osfs
mem_fs = memoryfs.MemoryFS()
mem_fs.makedir("test")
mem_fs.createfile("a.txt", "This is a test")
mem_fs.createfile("test/b.txt", "This is in a sub-dir")
#fs = osfs.OSFS('/home/will/fusetest/')
#main(fs)
main(mem_fs)
|