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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "test/librados_test_stub/TestMemIoCtxImpl.h" | |
5 | #include "test/librados_test_stub/TestMemRadosClient.h" | |
6 | #include "common/Clock.h" | |
7 | #include "common/RWLock.h" | |
c07f9fc5 | 8 | #include "include/err.h" |
7c673cae FG |
9 | #include <boost/algorithm/string/predicate.hpp> |
10 | #include <boost/bind.hpp> | |
11 | #include <errno.h> | |
12 | #include <include/compat.h> | |
13 | ||
14 | static void to_vector(const interval_set<uint64_t> &set, | |
15 | std::vector<std::pair<uint64_t, uint64_t> > *vec) { | |
16 | vec->clear(); | |
17 | for (interval_set<uint64_t>::const_iterator it = set.begin(); | |
18 | it != set.end(); ++it) { | |
19 | vec->push_back(*it); | |
20 | } | |
21 | } | |
22 | ||
23 | namespace librados { | |
24 | ||
25 | TestMemIoCtxImpl::TestMemIoCtxImpl() { | |
26 | } | |
27 | ||
28 | TestMemIoCtxImpl::TestMemIoCtxImpl(const TestMemIoCtxImpl& rhs) | |
29 | : TestIoCtxImpl(rhs), m_client(rhs.m_client), m_pool(rhs.m_pool) { | |
30 | m_pool->get(); | |
31 | } | |
32 | ||
33 | TestMemIoCtxImpl::TestMemIoCtxImpl(TestMemRadosClient *client, int64_t pool_id, | |
34 | const std::string& pool_name, | |
35 | TestMemCluster::Pool *pool) | |
36 | : TestIoCtxImpl(client, pool_id, pool_name), m_client(client), | |
37 | m_pool(pool) { | |
38 | m_pool->get(); | |
39 | } | |
40 | ||
41 | TestMemIoCtxImpl::~TestMemIoCtxImpl() { | |
42 | m_pool->put(); | |
43 | } | |
44 | ||
45 | TestIoCtxImpl *TestMemIoCtxImpl::clone() { | |
46 | return new TestMemIoCtxImpl(*this); | |
47 | } | |
48 | ||
49 | int TestMemIoCtxImpl::aio_remove(const std::string& oid, AioCompletionImpl *c) { | |
50 | m_client->add_aio_operation(oid, true, | |
51 | boost::bind(&TestMemIoCtxImpl::remove, this, oid, | |
52 | get_snap_context()), | |
53 | c); | |
54 | return 0; | |
55 | } | |
56 | ||
57 | int TestMemIoCtxImpl::append(const std::string& oid, const bufferlist &bl, | |
58 | const SnapContext &snapc) { | |
59 | if (get_snap_read() != CEPH_NOSNAP) { | |
60 | return -EROFS; | |
61 | } else if (m_client->is_blacklisted()) { | |
62 | return -EBLACKLISTED; | |
63 | } | |
64 | ||
65 | TestMemCluster::SharedFile file; | |
66 | { | |
67 | RWLock::WLocker l(m_pool->file_lock); | |
68 | file = get_file(oid, true, snapc); | |
69 | } | |
70 | ||
71 | RWLock::WLocker l(file->lock); | |
72 | file->data.append(bl); | |
73 | return 0; | |
74 | } | |
75 | ||
76 | int TestMemIoCtxImpl::assert_exists(const std::string &oid) { | |
77 | if (m_client->is_blacklisted()) { | |
78 | return -EBLACKLISTED; | |
79 | } | |
80 | ||
81 | RWLock::RLocker l(m_pool->file_lock); | |
82 | TestMemCluster::SharedFile file = get_file(oid, false, get_snap_context()); | |
83 | if (file == NULL) { | |
84 | return -ENOENT; | |
85 | } | |
86 | return 0; | |
87 | } | |
88 | ||
89 | int TestMemIoCtxImpl::create(const std::string& oid, bool exclusive) { | |
90 | if (get_snap_read() != CEPH_NOSNAP) { | |
91 | return -EROFS; | |
92 | } else if (m_client->is_blacklisted()) { | |
93 | return -EBLACKLISTED; | |
94 | } | |
95 | ||
96 | RWLock::WLocker l(m_pool->file_lock); | |
97 | get_file(oid, true, get_snap_context()); | |
98 | return 0; | |
99 | } | |
100 | ||
101 | int TestMemIoCtxImpl::list_snaps(const std::string& oid, snap_set_t *out_snaps) { | |
102 | if (m_client->is_blacklisted()) { | |
103 | return -EBLACKLISTED; | |
104 | } | |
105 | ||
106 | out_snaps->seq = 0; | |
107 | out_snaps->clones.clear(); | |
108 | ||
109 | RWLock::RLocker l(m_pool->file_lock); | |
110 | TestMemCluster::Files::iterator it = m_pool->files.find(oid); | |
111 | if (it == m_pool->files.end()) { | |
112 | return -ENOENT; | |
113 | } | |
114 | ||
115 | bool include_head = false; | |
116 | TestMemCluster::FileSnapshots &file_snaps = it->second; | |
117 | for (TestMemCluster::FileSnapshots::iterator s_it = file_snaps.begin(); | |
118 | s_it != file_snaps.end(); ++s_it) { | |
119 | TestMemCluster::File &file = *s_it->get(); | |
120 | ||
121 | if (file_snaps.size() > 1) { | |
122 | out_snaps->seq = file.snap_id; | |
123 | TestMemCluster::FileSnapshots::iterator next_it(s_it); | |
124 | ++next_it; | |
125 | if (next_it == file_snaps.end()) { | |
126 | include_head = true; | |
127 | break; | |
128 | } | |
129 | ||
130 | ++out_snaps->seq; | |
131 | if (!file.exists) { | |
132 | continue; | |
133 | } | |
134 | ||
135 | // update the overlap with the next version's overlap metadata | |
136 | TestMemCluster::File &next_file = *next_it->get(); | |
137 | interval_set<uint64_t> overlap; | |
138 | if (next_file.exists) { | |
139 | overlap = next_file.snap_overlap; | |
140 | } | |
141 | ||
142 | clone_info_t clone; | |
143 | clone.cloneid = file.snap_id; | |
144 | clone.snaps = file.snaps; | |
145 | to_vector(overlap, &clone.overlap); | |
146 | clone.size = file.data.length(); | |
147 | out_snaps->clones.push_back(clone); | |
148 | } | |
149 | } | |
150 | ||
151 | if ((file_snaps.size() == 1 && file_snaps.back()->data.length() > 0) || | |
152 | include_head) | |
153 | { | |
154 | // Include the SNAP_HEAD | |
155 | TestMemCluster::File &file = *file_snaps.back(); | |
156 | if (file.exists) { | |
157 | RWLock::RLocker l2(file.lock); | |
158 | if (out_snaps->seq == 0 && !include_head) { | |
159 | out_snaps->seq = file.snap_id; | |
160 | } | |
161 | clone_info_t head_clone; | |
162 | head_clone.cloneid = librados::SNAP_HEAD; | |
163 | head_clone.size = file.data.length(); | |
164 | out_snaps->clones.push_back(head_clone); | |
165 | } | |
166 | } | |
167 | return 0; | |
168 | ||
169 | } | |
170 | ||
c07f9fc5 | 171 | int TestMemIoCtxImpl::omap_get_vals2(const std::string& oid, |
7c673cae FG |
172 | const std::string& start_after, |
173 | const std::string &filter_prefix, | |
174 | uint64_t max_return, | |
c07f9fc5 FG |
175 | std::map<std::string, bufferlist> *out_vals, |
176 | bool *pmore) { | |
7c673cae FG |
177 | if (out_vals == NULL) { |
178 | return -EINVAL; | |
179 | } else if (m_client->is_blacklisted()) { | |
180 | return -EBLACKLISTED; | |
181 | } | |
182 | ||
183 | TestMemCluster::SharedFile file; | |
184 | { | |
185 | RWLock::RLocker l(m_pool->file_lock); | |
186 | file = get_file(oid, false, get_snap_context()); | |
187 | if (file == NULL) { | |
188 | return -ENOENT; | |
189 | } | |
190 | } | |
191 | ||
192 | out_vals->clear(); | |
193 | ||
194 | RWLock::RLocker l(file->lock); | |
195 | TestMemCluster::FileOMaps::iterator o_it = m_pool->file_omaps.find(oid); | |
196 | if (o_it == m_pool->file_omaps.end()) { | |
c07f9fc5 FG |
197 | if (pmore) { |
198 | *pmore = false; | |
199 | } | |
7c673cae FG |
200 | return 0; |
201 | } | |
202 | ||
203 | TestMemCluster::OMap &omap = o_it->second; | |
204 | TestMemCluster::OMap::iterator it = omap.begin(); | |
205 | if (!start_after.empty()) { | |
206 | it = omap.upper_bound(start_after); | |
207 | } | |
208 | ||
209 | while (it != omap.end() && max_return > 0) { | |
210 | if (filter_prefix.empty() || | |
211 | boost::algorithm::starts_with(it->first, filter_prefix)) { | |
212 | (*out_vals)[it->first] = it->second; | |
213 | --max_return; | |
214 | } | |
215 | ++it; | |
216 | } | |
c07f9fc5 FG |
217 | if (pmore) { |
218 | *pmore = (it != omap.end()); | |
219 | } | |
7c673cae FG |
220 | return 0; |
221 | } | |
222 | ||
c07f9fc5 FG |
223 | int TestMemIoCtxImpl::omap_get_vals(const std::string& oid, |
224 | const std::string& start_after, | |
225 | const std::string &filter_prefix, | |
226 | uint64_t max_return, | |
227 | std::map<std::string, bufferlist> *out_vals) { | |
228 | return omap_get_vals2(oid, start_after, filter_prefix, max_return, out_vals, nullptr); | |
229 | } | |
230 | ||
7c673cae FG |
231 | int TestMemIoCtxImpl::omap_rm_keys(const std::string& oid, |
232 | const std::set<std::string>& keys) { | |
233 | if (get_snap_read() != CEPH_NOSNAP) { | |
234 | return -EROFS; | |
235 | } else if (m_client->is_blacklisted()) { | |
236 | return -EBLACKLISTED; | |
237 | } | |
238 | ||
239 | TestMemCluster::SharedFile file; | |
240 | { | |
241 | RWLock::WLocker l(m_pool->file_lock); | |
242 | file = get_file(oid, true, get_snap_context()); | |
243 | if (file == NULL) { | |
244 | return -ENOENT; | |
245 | } | |
246 | } | |
247 | ||
248 | RWLock::WLocker l(file->lock); | |
249 | for (std::set<std::string>::iterator it = keys.begin(); | |
250 | it != keys.end(); ++it) { | |
251 | m_pool->file_omaps[oid].erase(*it); | |
252 | } | |
253 | return 0; | |
254 | } | |
255 | ||
256 | int TestMemIoCtxImpl::omap_set(const std::string& oid, | |
257 | const std::map<std::string, bufferlist> &map) { | |
258 | if (get_snap_read() != CEPH_NOSNAP) { | |
259 | return -EROFS; | |
260 | } else if (m_client->is_blacklisted()) { | |
261 | return -EBLACKLISTED; | |
262 | } | |
263 | ||
264 | TestMemCluster::SharedFile file; | |
265 | { | |
266 | RWLock::WLocker l(m_pool->file_lock); | |
267 | file = get_file(oid, true, get_snap_context()); | |
268 | if (file == NULL) { | |
269 | return -ENOENT; | |
270 | } | |
271 | } | |
272 | ||
273 | RWLock::WLocker l(file->lock); | |
274 | for (std::map<std::string, bufferlist>::const_iterator it = map.begin(); | |
275 | it != map.end(); ++it) { | |
276 | bufferlist bl; | |
277 | bl.append(it->second); | |
278 | m_pool->file_omaps[oid][it->first] = bl; | |
279 | } | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | int TestMemIoCtxImpl::read(const std::string& oid, size_t len, uint64_t off, | |
285 | bufferlist *bl) { | |
286 | if (m_client->is_blacklisted()) { | |
287 | return -EBLACKLISTED; | |
288 | } | |
289 | ||
290 | TestMemCluster::SharedFile file; | |
291 | { | |
292 | RWLock::RLocker l(m_pool->file_lock); | |
293 | file = get_file(oid, false, get_snap_context()); | |
294 | if (file == NULL) { | |
295 | return -ENOENT; | |
296 | } | |
297 | } | |
298 | ||
299 | RWLock::RLocker l(file->lock); | |
300 | if (len == 0) { | |
301 | len = file->data.length(); | |
302 | } | |
303 | len = clip_io(off, len, file->data.length()); | |
304 | if (bl != NULL && len > 0) { | |
305 | bufferlist bit; | |
306 | bit.substr_of(file->data, off, len); | |
307 | append_clone(bit, bl); | |
308 | } | |
309 | return len; | |
310 | } | |
311 | ||
312 | int TestMemIoCtxImpl::remove(const std::string& oid, const SnapContext &snapc) { | |
313 | if (get_snap_read() != CEPH_NOSNAP) { | |
314 | return -EROFS; | |
315 | } else if (m_client->is_blacklisted()) { | |
316 | return -EBLACKLISTED; | |
317 | } | |
318 | ||
319 | RWLock::WLocker l(m_pool->file_lock); | |
320 | TestMemCluster::SharedFile file = get_file(oid, false, snapc); | |
321 | if (file == NULL) { | |
322 | return -ENOENT; | |
323 | } | |
324 | file = get_file(oid, true, snapc); | |
325 | ||
326 | RWLock::WLocker l2(file->lock); | |
327 | file->exists = false; | |
328 | ||
329 | TestMemCluster::Files::iterator it = m_pool->files.find(oid); | |
330 | assert(it != m_pool->files.end()); | |
331 | if (it->second.size() == 1) { | |
332 | m_pool->files.erase(it); | |
333 | m_pool->file_omaps.erase(oid); | |
334 | } | |
335 | return 0; | |
336 | } | |
337 | ||
338 | int TestMemIoCtxImpl::selfmanaged_snap_create(uint64_t *snapid) { | |
339 | if (m_client->is_blacklisted()) { | |
340 | return -EBLACKLISTED; | |
341 | } | |
342 | ||
343 | RWLock::WLocker l(m_pool->file_lock); | |
344 | *snapid = ++m_pool->snap_id; | |
345 | m_pool->snap_seqs.insert(*snapid); | |
346 | return 0; | |
347 | } | |
348 | ||
349 | int TestMemIoCtxImpl::selfmanaged_snap_remove(uint64_t snapid) { | |
350 | if (m_client->is_blacklisted()) { | |
351 | return -EBLACKLISTED; | |
352 | } | |
353 | ||
354 | RWLock::WLocker l(m_pool->file_lock); | |
355 | TestMemCluster::SnapSeqs::iterator it = | |
356 | m_pool->snap_seqs.find(snapid); | |
357 | if (it == m_pool->snap_seqs.end()) { | |
358 | return -ENOENT; | |
359 | } | |
360 | ||
361 | // TODO clean up all file snapshots | |
362 | m_pool->snap_seqs.erase(it); | |
363 | return 0; | |
364 | } | |
365 | ||
366 | int TestMemIoCtxImpl::selfmanaged_snap_rollback(const std::string& oid, | |
367 | uint64_t snapid) { | |
368 | if (m_client->is_blacklisted()) { | |
369 | return -EBLACKLISTED; | |
370 | } | |
371 | ||
372 | RWLock::WLocker l(m_pool->file_lock); | |
373 | ||
374 | TestMemCluster::SharedFile file; | |
375 | TestMemCluster::Files::iterator f_it = m_pool->files.find(oid); | |
376 | if (f_it == m_pool->files.end()) { | |
377 | return 0; | |
378 | } | |
379 | ||
380 | TestMemCluster::FileSnapshots &snaps = f_it->second; | |
381 | file = snaps.back(); | |
382 | ||
383 | size_t versions = 0; | |
384 | for (TestMemCluster::FileSnapshots::reverse_iterator it = snaps.rbegin(); | |
385 | it != snaps.rend(); ++it) { | |
386 | TestMemCluster::SharedFile file = *it; | |
387 | if (file->snap_id < get_snap_read()) { | |
388 | if (versions == 0) { | |
389 | // already at the snapshot version | |
390 | return 0; | |
391 | } else if (file->snap_id == CEPH_NOSNAP) { | |
392 | if (versions == 1) { | |
393 | // delete it current HEAD, next one is correct version | |
394 | snaps.erase(it.base()); | |
395 | } else { | |
396 | // overwrite contents of current HEAD | |
397 | file = TestMemCluster::SharedFile (new TestMemCluster::File(**it)); | |
398 | file->snap_id = CEPH_NOSNAP; | |
399 | *it = file; | |
400 | } | |
401 | } else { | |
402 | // create new head version | |
403 | file = TestMemCluster::SharedFile (new TestMemCluster::File(**it)); | |
404 | file->snap_id = m_pool->snap_id; | |
405 | snaps.push_back(file); | |
406 | } | |
407 | return 0; | |
408 | } | |
409 | ++versions; | |
410 | } | |
411 | return 0; | |
412 | } | |
413 | ||
414 | int TestMemIoCtxImpl::sparse_read(const std::string& oid, uint64_t off, | |
415 | uint64_t len, | |
416 | std::map<uint64_t,uint64_t> *m, | |
417 | bufferlist *data_bl) { | |
418 | if (m_client->is_blacklisted()) { | |
419 | return -EBLACKLISTED; | |
420 | } | |
421 | ||
422 | // TODO verify correctness | |
423 | TestMemCluster::SharedFile file; | |
424 | { | |
425 | RWLock::RLocker l(m_pool->file_lock); | |
426 | file = get_file(oid, false, get_snap_context()); | |
427 | if (file == NULL) { | |
428 | return -ENOENT; | |
429 | } | |
430 | } | |
431 | ||
432 | RWLock::RLocker l(file->lock); | |
433 | len = clip_io(off, len, file->data.length()); | |
434 | if (m != NULL) { | |
435 | m->clear(); | |
436 | if (len > 0) { | |
437 | (*m)[off] = len; | |
438 | } | |
439 | } | |
440 | if (data_bl != NULL && len > 0) { | |
441 | bufferlist bit; | |
442 | bit.substr_of(file->data, off, len); | |
443 | append_clone(bit, data_bl); | |
444 | } | |
445 | return 0; | |
446 | } | |
447 | ||
448 | int TestMemIoCtxImpl::stat(const std::string& oid, uint64_t *psize, | |
449 | time_t *pmtime) { | |
450 | if (m_client->is_blacklisted()) { | |
451 | return -EBLACKLISTED; | |
452 | } | |
453 | ||
454 | TestMemCluster::SharedFile file; | |
455 | { | |
456 | RWLock::RLocker l(m_pool->file_lock); | |
457 | file = get_file(oid, false, get_snap_context()); | |
458 | if (file == NULL) { | |
459 | return -ENOENT; | |
460 | } | |
461 | } | |
462 | ||
463 | RWLock::RLocker l(file->lock); | |
464 | if (psize != NULL) { | |
465 | *psize = file->data.length(); | |
466 | } | |
467 | if (pmtime != NULL) { | |
468 | *pmtime = file->mtime; | |
469 | } | |
470 | return 0; | |
471 | } | |
472 | ||
473 | int TestMemIoCtxImpl::truncate(const std::string& oid, uint64_t size, | |
474 | const SnapContext &snapc) { | |
475 | if (get_snap_read() != CEPH_NOSNAP) { | |
476 | return -EROFS; | |
477 | } else if (m_client->is_blacklisted()) { | |
478 | return -EBLACKLISTED; | |
479 | } | |
480 | ||
481 | TestMemCluster::SharedFile file; | |
482 | { | |
483 | RWLock::WLocker l(m_pool->file_lock); | |
484 | file = get_file(oid, true, snapc); | |
485 | } | |
486 | ||
487 | RWLock::WLocker l(file->lock); | |
488 | bufferlist bl(size); | |
489 | ||
490 | interval_set<uint64_t> is; | |
491 | if (file->data.length() > size) { | |
492 | is.insert(size, file->data.length() - size); | |
493 | ||
494 | bl.substr_of(file->data, 0, size); | |
495 | file->data.swap(bl); | |
496 | } else if (file->data.length() != size) { | |
497 | if (size == 0) { | |
498 | bl.clear(); | |
499 | } else { | |
500 | is.insert(0, size); | |
501 | ||
502 | bl.append_zero(size - file->data.length()); | |
503 | file->data.append(bl); | |
504 | } | |
505 | } | |
506 | is.intersection_of(file->snap_overlap); | |
507 | file->snap_overlap.subtract(is); | |
508 | return 0; | |
509 | } | |
510 | ||
511 | int TestMemIoCtxImpl::write(const std::string& oid, bufferlist& bl, size_t len, | |
512 | uint64_t off, const SnapContext &snapc) { | |
513 | if (get_snap_read() != CEPH_NOSNAP) { | |
514 | return -EROFS; | |
515 | } else if (m_client->is_blacklisted()) { | |
516 | return -EBLACKLISTED; | |
517 | } | |
518 | ||
519 | TestMemCluster::SharedFile file; | |
520 | { | |
521 | RWLock::WLocker l(m_pool->file_lock); | |
522 | file = get_file(oid, true, snapc); | |
523 | } | |
524 | ||
525 | RWLock::WLocker l(file->lock); | |
526 | if (len > 0) { | |
527 | interval_set<uint64_t> is; | |
528 | is.insert(off, len); | |
529 | is.intersection_of(file->snap_overlap); | |
530 | file->snap_overlap.subtract(is); | |
531 | } | |
532 | ||
533 | ensure_minimum_length(off + len, &file->data); | |
534 | file->data.copy_in(off, len, bl); | |
535 | return 0; | |
536 | } | |
537 | ||
538 | int TestMemIoCtxImpl::write_full(const std::string& oid, bufferlist& bl, | |
539 | const SnapContext &snapc) { | |
540 | if (get_snap_read() != CEPH_NOSNAP) { | |
541 | return -EROFS; | |
542 | } else if (m_client->is_blacklisted()) { | |
543 | return -EBLACKLISTED; | |
544 | } | |
545 | ||
546 | TestMemCluster::SharedFile file; | |
547 | { | |
548 | RWLock::WLocker l(m_pool->file_lock); | |
549 | file = get_file(oid, true, snapc); | |
550 | if (file == NULL) { | |
551 | return -ENOENT; | |
552 | } | |
553 | } | |
554 | ||
555 | RWLock::WLocker l(file->lock); | |
556 | if (bl.length() > 0) { | |
557 | interval_set<uint64_t> is; | |
558 | is.insert(0, bl.length()); | |
559 | is.intersection_of(file->snap_overlap); | |
560 | file->snap_overlap.subtract(is); | |
561 | } | |
562 | ||
563 | file->data.clear(); | |
564 | file->data.append(bl); | |
565 | return 0; | |
566 | } | |
567 | ||
568 | int TestMemIoCtxImpl::writesame(const std::string& oid, bufferlist& bl, size_t len, | |
569 | uint64_t off, const SnapContext &snapc) { | |
570 | if (get_snap_read() != CEPH_NOSNAP) { | |
571 | return -EROFS; | |
572 | } else if (m_client->is_blacklisted()) { | |
573 | return -EBLACKLISTED; | |
574 | } | |
575 | ||
7c673cae FG |
576 | if (len == 0 || (len % bl.length())) { |
577 | return -EINVAL; | |
578 | } | |
579 | ||
580 | TestMemCluster::SharedFile file; | |
581 | { | |
582 | RWLock::WLocker l(m_pool->file_lock); | |
583 | file = get_file(oid, true, snapc); | |
584 | } | |
585 | ||
586 | RWLock::WLocker l(file->lock); | |
587 | if (len > 0) { | |
588 | interval_set<uint64_t> is; | |
589 | is.insert(off, len); | |
590 | is.intersection_of(file->snap_overlap); | |
591 | file->snap_overlap.subtract(is); | |
592 | } | |
593 | ||
594 | ensure_minimum_length(off + len, &file->data); | |
595 | while (len > 0) { | |
596 | file->data.copy_in(off, bl.length(), bl); | |
597 | off += bl.length(); | |
598 | len -= bl.length(); | |
599 | } | |
600 | return 0; | |
601 | } | |
602 | ||
c07f9fc5 FG |
603 | int TestMemIoCtxImpl::cmpext(const std::string& oid, uint64_t off, |
604 | bufferlist& cmp_bl) { | |
605 | if (get_snap_read() != CEPH_NOSNAP) { | |
606 | return -EROFS; | |
607 | } else if (m_client->is_blacklisted()) { | |
608 | return -EBLACKLISTED; | |
609 | } | |
610 | ||
611 | if (cmp_bl.length() == 0) { | |
612 | return -EINVAL; | |
613 | } | |
614 | ||
615 | TestMemCluster::SharedFile file; | |
616 | { | |
617 | RWLock::WLocker l(m_pool->file_lock); | |
618 | file = get_file(oid, true, get_snap_context()); | |
619 | } | |
620 | ||
621 | RWLock::RLocker l(file->lock); | |
622 | size_t len = cmp_bl.length(); | |
623 | ensure_minimum_length(off + len, &file->data); | |
624 | if (len > 0 && off <= len) { | |
625 | for (uint64_t p = off; p < len; p++) { | |
626 | if (file->data[p] != cmp_bl[p]) | |
627 | return -MAX_ERRNO - p; | |
628 | } | |
629 | } | |
630 | return 0; | |
631 | } | |
632 | ||
7c673cae FG |
633 | int TestMemIoCtxImpl::xattr_get(const std::string& oid, |
634 | std::map<std::string, bufferlist>* attrset) { | |
635 | if (m_client->is_blacklisted()) { | |
636 | return -EBLACKLISTED; | |
637 | } | |
638 | ||
639 | TestMemCluster::SharedFile file; | |
640 | RWLock::RLocker l(m_pool->file_lock); | |
641 | TestMemCluster::FileXAttrs::iterator it = m_pool->file_xattrs.find(oid); | |
642 | if (it == m_pool->file_xattrs.end()) { | |
643 | return -ENODATA; | |
644 | } | |
645 | *attrset = it->second; | |
646 | return 0; | |
647 | } | |
648 | ||
649 | int TestMemIoCtxImpl::xattr_set(const std::string& oid, const std::string &name, | |
650 | bufferlist& bl) { | |
651 | if (m_client->is_blacklisted()) { | |
652 | return -EBLACKLISTED; | |
653 | } | |
654 | ||
655 | RWLock::WLocker l(m_pool->file_lock); | |
656 | m_pool->file_xattrs[oid][name] = bl; | |
657 | return 0; | |
658 | } | |
659 | ||
660 | int TestMemIoCtxImpl::zero(const std::string& oid, uint64_t off, uint64_t len) { | |
661 | if (m_client->is_blacklisted()) { | |
662 | return -EBLACKLISTED; | |
663 | } | |
664 | ||
665 | bool truncate_redirect = false; | |
666 | TestMemCluster::SharedFile file; | |
667 | { | |
668 | RWLock::WLocker l(m_pool->file_lock); | |
669 | file = get_file(oid, false, get_snap_context()); | |
670 | if (!file) { | |
671 | return 0; | |
672 | } | |
673 | file = get_file(oid, true, get_snap_context()); | |
674 | ||
675 | RWLock::RLocker l2(file->lock); | |
676 | if (len > 0 && off + len >= file->data.length()) { | |
677 | // Zero -> Truncate logic embedded in OSD | |
678 | truncate_redirect = true; | |
679 | } | |
680 | } | |
681 | if (truncate_redirect) { | |
682 | return truncate(oid, off, get_snap_context()); | |
683 | } | |
684 | ||
685 | bufferlist bl; | |
686 | bl.append_zero(len); | |
687 | return write(oid, bl, len, off, get_snap_context()); | |
688 | } | |
689 | ||
690 | void TestMemIoCtxImpl::append_clone(bufferlist& src, bufferlist* dest) { | |
691 | // deep-copy the src to ensure our memory-based mock RADOS data cannot | |
692 | // be modified by callers | |
693 | if (src.length() > 0) { | |
694 | bufferlist::iterator iter = src.begin(); | |
695 | buffer::ptr ptr; | |
696 | iter.copy_deep(src.length(), ptr); | |
697 | dest->append(ptr); | |
698 | } | |
699 | } | |
700 | ||
701 | size_t TestMemIoCtxImpl::clip_io(size_t off, size_t len, size_t bl_len) { | |
702 | if (off >= bl_len) { | |
703 | len = 0; | |
704 | } else if (off + len > bl_len) { | |
705 | len = bl_len - off; | |
706 | } | |
707 | return len; | |
708 | } | |
709 | ||
710 | void TestMemIoCtxImpl::ensure_minimum_length(size_t len, bufferlist *bl) { | |
711 | if (len > bl->length()) { | |
712 | bufferptr ptr(buffer::create(len - bl->length())); | |
713 | ptr.zero(); | |
714 | bl->append(ptr); | |
715 | } | |
716 | } | |
717 | ||
718 | TestMemCluster::SharedFile TestMemIoCtxImpl::get_file( | |
719 | const std::string &oid, bool write, const SnapContext &snapc) { | |
720 | assert(m_pool->file_lock.is_locked() || m_pool->file_lock.is_wlocked()); | |
721 | assert(!write || m_pool->file_lock.is_wlocked()); | |
722 | ||
723 | TestMemCluster::SharedFile file; | |
724 | TestMemCluster::Files::iterator it = m_pool->files.find(oid); | |
725 | if (it != m_pool->files.end()) { | |
726 | file = it->second.back(); | |
727 | } else if (!write) { | |
728 | return TestMemCluster::SharedFile(); | |
729 | } | |
730 | ||
731 | if (write) { | |
732 | bool new_version = false; | |
733 | if (!file || !file->exists) { | |
734 | file = TestMemCluster::SharedFile(new TestMemCluster::File()); | |
735 | new_version = true; | |
736 | } else { | |
737 | if (!snapc.snaps.empty() && file->snap_id < snapc.seq) { | |
738 | for (std::vector<snapid_t>::const_reverse_iterator seq_it = | |
739 | snapc.snaps.rbegin(); | |
740 | seq_it != snapc.snaps.rend(); ++seq_it) { | |
741 | if (*seq_it > file->snap_id && *seq_it <= snapc.seq) { | |
742 | file->snaps.push_back(*seq_it); | |
743 | } | |
744 | } | |
745 | ||
746 | bufferlist prev_data = file->data; | |
747 | file = TestMemCluster::SharedFile( | |
748 | new TestMemCluster::File(*file)); | |
749 | file->data.clear(); | |
750 | append_clone(prev_data, &file->data); | |
751 | if (prev_data.length() > 0) { | |
752 | file->snap_overlap.insert(0, prev_data.length()); | |
753 | } | |
754 | new_version = true; | |
755 | } | |
756 | } | |
757 | ||
758 | if (new_version) { | |
759 | file->snap_id = snapc.seq; | |
760 | file->mtime = ceph_clock_now().sec(); | |
761 | m_pool->files[oid].push_back(file); | |
762 | } | |
763 | return file; | |
764 | } | |
765 | ||
766 | if (get_snap_read() == CEPH_NOSNAP) { | |
767 | if (!file->exists) { | |
768 | assert(it->second.size() > 1); | |
769 | return TestMemCluster::SharedFile(); | |
770 | } | |
771 | return file; | |
772 | } | |
773 | ||
774 | TestMemCluster::FileSnapshots &snaps = it->second; | |
775 | for (TestMemCluster::FileSnapshots::reverse_iterator it = snaps.rbegin(); | |
776 | it != snaps.rend(); ++it) { | |
777 | TestMemCluster::SharedFile file = *it; | |
778 | if (file->snap_id < get_snap_read()) { | |
779 | if (!file->exists) { | |
780 | return TestMemCluster::SharedFile(); | |
781 | } | |
782 | return file; | |
783 | } | |
784 | } | |
785 | return TestMemCluster::SharedFile(); | |
786 | } | |
787 | ||
788 | } // namespace librados |