2 from __future__ import absolute_import, print_function
3 from binascii import unhexlify
4 from collections import namedtuple
5 from errno import ELOOP, ENOTDIR
8 from random import Random, randint
9 from stat import S_IFDIR, S_IFLNK, S_IFREG, S_ISDIR, S_ISREG
10 from sys import stderr
11 from time import localtime, strftime, tzset
15 from bup._helpers import write_random
16 from bup import git, metadata, vfs
17 from bup.compat import environ, fsencode, items, range
18 from bup.git import BUP_CHUNKED
19 from bup.helpers import exc, shstr
20 from bup.metadata import Metadata
21 from bup.repo import LocalRepo
22 from bup.test.vfs import tree_dict
23 from buptest import ex, exo, no_lingering_errors, test_tempdir
26 bup_tmp = os.path.realpath(b'../../../t/tmp')
27 bup_path = top_dir + b'/bup'
28 start_dir = os.getcwd()
30 def ex(cmd, **kwargs):
31 print(shstr(cmd), file=stderr)
32 return exc(cmd, **kwargs)
35 def test_default_modes():
36 wvpasseq(S_IFREG | 0o644, vfs.default_file_mode)
37 wvpasseq(S_IFDIR | 0o755, vfs.default_dir_mode)
38 wvpasseq(S_IFLNK | 0o755, vfs.default_symlink_mode)
41 def test_cache_behavior():
42 orig_max = vfs._cache_max_items
44 vfs._cache_max_items = 2
46 wvpasseq({}, vfs._cache)
47 wvpasseq([], vfs._cache_keys)
48 wvfail(vfs._cache_keys)
49 wvexcept(Exception, vfs.cache_notice, b'x', 1)
50 key_0 = b'itm:' + b'\0' * 20
51 key_1 = b'itm:' + b'\1' * 20
52 key_2 = b'itm:' + b'\2' * 20
53 vfs.cache_notice(key_0, b'something')
54 wvpasseq({key_0 : b'something'}, vfs._cache)
55 wvpasseq([key_0], vfs._cache_keys)
56 vfs.cache_notice(key_1, b'something else')
57 wvpasseq({key_0 : b'something', key_1 : b'something else'}, vfs._cache)
58 wvpasseq(frozenset([key_0, key_1]), frozenset(vfs._cache_keys))
59 vfs.cache_notice(key_2, b'and also')
60 wvpasseq(2, len(vfs._cache))
61 wvpass(frozenset(items(vfs._cache))
62 < frozenset(items({key_0 : b'something',
63 key_1 : b'something else',
64 key_2 : b'and also'})))
65 wvpasseq(2, len(vfs._cache_keys))
66 wvpass(frozenset(vfs._cache_keys) < frozenset([key_0, key_1, key_2]))
68 wvpasseq({}, vfs._cache)
69 wvpasseq([], vfs._cache_keys)
71 vfs._cache_max_items = orig_max
74 ## The clear_cache() calls below are to make sure that the test starts
75 ## from a known state since at the moment the cache entry for a given
76 ## item (like a commit) can change. For example, its meta value might
77 ## be promoted from a mode to a Metadata instance once the tree it
78 ## refers to is traversed.
80 def run_augment_item_meta_tests(repo,
82 link_path, link_target):
83 _, file_item = vfs.resolve(repo, file_path)[-1]
84 _, link_item = vfs.resolve(repo, link_path, follow=False)[-1]
85 wvpass(isinstance(file_item.meta, Metadata))
86 wvpass(isinstance(link_item.meta, Metadata))
87 # Note: normally, modifying item.meta values is forbidden
88 file_item.meta.size = file_item.meta.size or vfs.item_size(repo, file_item)
89 link_item.meta.size = link_item.meta.size or vfs.item_size(repo, link_item)
91 ## Ensure a fully populated item is left alone
92 augmented = vfs.augment_item_meta(repo, file_item)
93 wvpass(augmented is file_item)
94 wvpass(augmented.meta is file_item.meta)
95 augmented = vfs.augment_item_meta(repo, file_item, include_size=True)
96 wvpass(augmented is file_item)
97 wvpass(augmented.meta is file_item.meta)
99 ## Ensure a missing size is handled poperly
100 file_item.meta.size = None
101 augmented = vfs.augment_item_meta(repo, file_item)
102 wvpass(augmented is file_item)
103 wvpass(augmented.meta is file_item.meta)
104 augmented = vfs.augment_item_meta(repo, file_item, include_size=True)
105 wvpass(augmented is not file_item)
106 wvpasseq(file_size, augmented.meta.size)
108 ## Ensure a meta mode is handled properly
109 mode_item = file_item._replace(meta=vfs.default_file_mode)
110 augmented = vfs.augment_item_meta(repo, mode_item)
111 augmented_w_size = vfs.augment_item_meta(repo, mode_item, include_size=True)
112 for item in (augmented, augmented_w_size):
114 wvpass(item is not file_item)
115 wvpass(isinstance(meta, Metadata))
116 wvpasseq(vfs.default_file_mode, meta.mode)
117 wvpasseq((None, None, 0, 0, 0),
118 (meta.uid, meta.gid, meta.atime, meta.mtime, meta.ctime))
119 wvpass(augmented.meta.size is None)
120 wvpasseq(file_size, augmented_w_size.meta.size)
122 ## Ensure symlinks are handled properly
123 mode_item = link_item._replace(meta=vfs.default_symlink_mode)
124 augmented = vfs.augment_item_meta(repo, mode_item)
125 wvpass(augmented is not mode_item)
126 wvpass(isinstance(augmented.meta, Metadata))
127 wvpasseq(link_target, augmented.meta.symlink_target)
128 wvpasseq(len(link_target), augmented.meta.size)
129 augmented = vfs.augment_item_meta(repo, mode_item, include_size=True)
130 wvpass(augmented is not mode_item)
131 wvpass(isinstance(augmented.meta, Metadata))
132 wvpasseq(link_target, augmented.meta.symlink_target)
133 wvpasseq(len(link_target), augmented.meta.size)
137 def test_item_mode():
138 with no_lingering_errors():
139 mode = S_IFDIR | 0o755
140 meta = metadata.from_path(b'.')
142 wvpasseq(mode, vfs.item_mode(vfs.Item(oid=oid, meta=mode)))
143 wvpasseq(meta.mode, vfs.item_mode(vfs.Item(oid=oid, meta=meta)))
146 def test_reverse_suffix_duplicates():
147 suffix = lambda x: tuple(vfs._reverse_suffix_duplicates(x))
148 wvpasseq((b'x',), suffix((b'x',)))
149 wvpasseq((b'x', b'y'), suffix((b'x', b'y')))
150 wvpasseq((b'x-1', b'x-0'), suffix((b'x',) * 2))
151 wvpasseq([b'x-%02d' % n for n in reversed(range(11))],
152 list(suffix((b'x',) * 11)))
153 wvpasseq((b'x-1', b'x-0', b'y'), suffix((b'x', b'x', b'y')))
154 wvpasseq((b'x', b'y-1', b'y-0'), suffix((b'x', b'y', b'y')))
155 wvpasseq((b'x', b'y-1', b'y-0', b'z'), suffix((b'x', b'y', b'y', b'z')))
159 with no_lingering_errors():
160 with test_tempdir(b'bup-tvfs-') as tmpdir:
161 bup_dir = tmpdir + b'/bup'
162 environ[b'GIT_DIR'] = bup_dir
163 environ[b'BUP_DIR'] = bup_dir
164 git.repodir = bup_dir
165 data_path = tmpdir + b'/src'
167 with open(data_path + b'/file', 'wb+') as tmpfile:
168 tmpfile.write(b'canary\n')
169 symlink(b'file', data_path + b'/symlink')
170 ex((bup_path, b'init'))
171 ex((bup_path, b'index', b'-v', data_path))
172 ex((bup_path, b'save', b'-d', b'100000', b'-tvvn', b'test',
173 b'--strip', data_path))
177 ls_tree = exo((b'git', b'ls-tree', b'test', b'symlink')).out
178 mode, typ, oidx, name = ls_tree.strip().split(None, 3)
179 assert name == b'symlink'
180 link_item = vfs.Item(oid=unhexlify(oidx), meta=int(mode, 8))
181 wvpasseq(b'file', vfs.readlink(repo, link_item))
183 ls_tree = exo((b'git', b'ls-tree', b'test', b'file')).out
184 mode, typ, oidx, name = ls_tree.strip().split(None, 3)
185 assert name == b'file'
186 file_item = vfs.Item(oid=unhexlify(oidx), meta=int(mode, 8))
187 wvexcept(Exception, vfs.readlink, repo, file_item)
190 wvpasseq(4, vfs.item_size(repo, link_item))
191 wvpasseq(7, vfs.item_size(repo, file_item))
192 meta = metadata.from_path(fsencode(__file__))
194 fake_item = file_item._replace(meta=meta)
195 wvpasseq(42, vfs.item_size(repo, fake_item))
197 _, fakelink_item = vfs.resolve(repo, b'/test/latest', follow=False)[-1]
198 wvpasseq(17, vfs.item_size(repo, fakelink_item))
200 wvstart('augment_item_meta')
201 run_augment_item_meta_tests(repo,
202 b'/test/latest/file', 7,
203 b'/test/latest/symlink', b'file')
206 # FIXME: this caused StopIteration
207 #_, file_item = vfs.resolve(repo, '/file')[-1]
208 _, file_item = vfs.resolve(repo, b'/test/latest/file')[-1]
209 file_copy = vfs.copy_item(file_item)
210 wvpass(file_copy is not file_item)
211 wvpass(file_copy.meta is not file_item.meta)
212 wvpass(isinstance(file_copy, tuple))
213 wvpass(file_item.meta.user)
214 wvpass(file_copy.meta.user)
215 file_copy.meta.user = None
216 wvpass(file_item.meta.user)
218 def write_sized_random_content(parent_dir, size, seed):
220 with open(b'%s/%d' % (parent_dir, size), 'wb') as f:
221 write_random(f.fileno(), size, seed, verbose)
223 def validate_vfs_streaming_read(repo, item, expected_path, read_sizes):
224 for read_size in read_sizes:
225 with open(expected_path, 'rb') as expected:
226 with vfs.fopen(repo, item) as actual:
227 ex_buf = expected.read(read_size)
228 act_buf = actual.read(read_size)
229 while ex_buf and act_buf:
230 wvpassge(read_size, len(ex_buf))
231 wvpassge(read_size, len(act_buf))
232 wvpasseq(len(ex_buf), len(act_buf))
233 wvpass(ex_buf == act_buf)
234 ex_buf = expected.read(read_size)
235 act_buf = actual.read(read_size)
236 wvpasseq(b'', ex_buf)
237 wvpasseq(b'', act_buf)
239 def validate_vfs_seeking_read(repo, item, expected_path, read_sizes):
240 def read_act(act_pos):
241 with vfs.fopen(repo, item) as actual:
243 wvpasseq(act_pos, actual.tell())
244 act_buf = actual.read(read_size)
245 act_pos += len(act_buf)
246 wvpasseq(act_pos, actual.tell())
247 return act_pos, act_buf
249 for read_size in read_sizes:
250 with open(expected_path, 'rb') as expected:
251 ex_buf = expected.read(read_size)
255 act_pos, act_buf = read_act(act_pos)
256 wvpassge(read_size, len(ex_buf))
257 wvpassge(read_size, len(act_buf))
258 wvpasseq(len(ex_buf), len(act_buf))
259 wvpass(ex_buf == act_buf)
262 ex_buf = expected.read(read_size)
263 else: # hit expected eof first
264 act_pos, act_buf = read_act(act_pos)
265 wvpasseq(b'', ex_buf)
266 wvpasseq(b'', act_buf)
269 def test_read_and_seek():
270 # Write a set of randomly sized files containing random data whose
271 # names are their sizes, and then verify that what we get back
272 # from the vfs when seeking and reading with various block sizes
273 # matches the original content.
274 with no_lingering_errors():
275 with test_tempdir(b'bup-tvfs-read-') as tmpdir:
276 resolve = vfs.resolve
277 bup_dir = tmpdir + b'/bup'
278 environ[b'GIT_DIR'] = bup_dir
279 environ[b'BUP_DIR'] = bup_dir
280 git.repodir = bup_dir
282 data_path = tmpdir + b'/src'
284 seed = randint(-(1 << 31), (1 << 31) - 1)
287 print('test_read seed:', seed, file=sys.stderr)
288 max_size = 2 * 1024 * 1024
289 sizes = set((rand.randint(1, max_size) for _ in range(5)))
293 write_sized_random_content(data_path, size, seed)
294 ex((bup_path, b'init'))
295 ex((bup_path, b'index', b'-v', data_path))
296 ex((bup_path, b'save', b'-d', b'100000', b'-tvvn', b'test',
297 b'--strip', data_path))
298 read_sizes = set((rand.randint(1, max_size) for _ in range(10)))
301 print('test_read src sizes:', sizes, file=sys.stderr)
302 print('test_read read sizes:', read_sizes, file=sys.stderr)
304 res = resolve(repo, b'/test/latest/' + str(size).encode('ascii'))
306 wvpasseq(size, vfs.item_size(repo, res[-1][1]))
307 validate_vfs_streaming_read(repo, item,
308 b'%s/%d' % (data_path, size),
310 validate_vfs_seeking_read(repo, item,
311 b'%s/%d' % (data_path, size),
315 def test_contents_with_mismatched_bupm_git_ordering():
316 with no_lingering_errors():
317 with test_tempdir(b'bup-tvfs-') as tmpdir:
318 bup_dir = tmpdir + b'/bup'
319 environ[b'GIT_DIR'] = bup_dir
320 environ[b'BUP_DIR'] = bup_dir
321 git.repodir = bup_dir
322 data_path = tmpdir + b'/src'
324 os.mkdir(data_path + b'/foo')
325 with open(data_path + b'/foo.', 'wb+') as tmpfile:
326 tmpfile.write(b'canary\n')
327 ex((bup_path, b'init'))
328 ex((bup_path, b'index', b'-v', data_path))
330 save_name = strftime('%Y-%m-%d-%H%M%S', localtime(save_utc)).encode('ascii')
331 ex((bup_path, b'save', b'-tvvn', b'test', b'-d', b'%d' % save_utc,
332 b'--strip', data_path))
334 tip_sref = exo((b'git', b'show-ref', b'refs/heads/test')).out
335 tip_oidx = tip_sref.strip().split()[0]
336 tip_tree_oidx = exo((b'git', b'log', b'--pretty=%T', b'-n1',
337 tip_oidx)).out.strip()
338 tip_tree_oid = unhexlify(tip_tree_oidx)
339 tip_tree = tree_dict(repo, tip_tree_oid)
341 name, item = vfs.resolve(repo, b'/test/latest')[2]
342 wvpasseq(save_name, name)
343 expected = frozenset((x.name, vfs.Item(oid=x.oid, meta=x.meta))
344 for x in (tip_tree[name]
345 for name in (b'.', b'foo', b'foo.')))
346 contents = tuple(vfs.contents(repo, item))
347 wvpasseq(expected, frozenset(contents))
348 # Spot check, in case tree_dict shares too much code with the vfs
349 name, item = next(((n, i) for n, i in contents if n == b'foo'))
350 wvpass(S_ISDIR(item.meta))
351 name, item = next(((n, i) for n, i in contents if n == b'foo.'))
352 wvpass(S_ISREG(item.meta.mode))
355 def test_duplicate_save_dates():
356 with no_lingering_errors():
357 with test_tempdir(b'bup-tvfs-') as tmpdir:
358 bup_dir = tmpdir + b'/bup'
359 environ[b'GIT_DIR'] = bup_dir
360 environ[b'BUP_DIR'] = bup_dir
361 environ[b'TZ'] = b'UTC'
363 git.repodir = bup_dir
364 data_path = tmpdir + b'/src'
366 with open(data_path + b'/file', 'wb+') as tmpfile:
367 tmpfile.write(b'canary\n')
369 ex((bup_path, b'init'))
370 ex((bup_path, b'index', b'-v', data_path))
372 ex((bup_path, b'save', b'-d', b'100000', b'-n', b'test',
375 res = vfs.resolve(repo, b'/test')
376 wvpasseq(2, len(res))
377 name, revlist = res[-1]
378 wvpasseq(b'test', name)
380 b'1970-01-02-034640-00',
381 b'1970-01-02-034640-01',
382 b'1970-01-02-034640-02',
383 b'1970-01-02-034640-03',
384 b'1970-01-02-034640-04',
385 b'1970-01-02-034640-05',
386 b'1970-01-02-034640-06',
387 b'1970-01-02-034640-07',
388 b'1970-01-02-034640-08',
389 b'1970-01-02-034640-09',
390 b'1970-01-02-034640-10',
392 tuple(sorted(x[0] for x in vfs.contents(repo, revlist))))
395 def test_item_read_write():
396 with no_lingering_errors():
397 x = vfs.Root(meta=13)
399 vfs.write_item(stream, x)
400 print('stream:', repr(stream.getvalue()), stream.tell(), file=sys.stderr)
402 wvpasseq(x, vfs.read_item(stream))