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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- | |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "include/compat.h" | |
5 | #include "include/rados/rgw_file.h" | |
6 | ||
7 | #include <sys/types.h> | |
8 | #include <sys/stat.h> | |
9 | ||
10 | #include "rgw_lib.h" | |
11 | #include "rgw_rados.h" | |
12 | #include "rgw_resolve.h" | |
13 | #include "rgw_op.h" | |
14 | #include "rgw_rest.h" | |
15 | #include "rgw_acl.h" | |
16 | #include "rgw_acl_s3.h" | |
17 | #include "rgw_frontend.h" | |
18 | #include "rgw_request.h" | |
19 | #include "rgw_process.h" | |
20 | #include "rgw_rest_user.h" | |
21 | #include "rgw_rest_s3.h" | |
22 | #include "rgw_os_lib.h" | |
23 | #include "rgw_auth_s3.h" | |
24 | #include "rgw_user.h" | |
25 | #include "rgw_bucket.h" | |
26 | ||
27 | #include "rgw_file.h" | |
28 | #include "rgw_lib_frontend.h" | |
29 | ||
30 | #include <atomic> | |
31 | ||
32 | #define dout_subsys ceph_subsys_rgw | |
33 | ||
34 | using namespace rgw; | |
35 | ||
36 | namespace rgw { | |
37 | ||
38 | extern RGWLib rgwlib; | |
39 | ||
40 | const string RGWFileHandle::root_name = "/"; | |
41 | ||
42 | std::atomic<uint32_t> RGWLibFS::fs_inst_counter; | |
43 | ||
44 | uint32_t RGWLibFS::write_completion_interval_s = 10; | |
45 | ||
46 | ceph::timer<ceph::mono_clock> RGWLibFS::write_timer{ | |
47 | ceph::construct_suspended}; | |
48 | ||
49 | inline int valid_fs_bucket_name(const string& name) { | |
50 | int rc = valid_s3_bucket_name(name, false /* relaxed */); | |
51 | if (rc != 0) { | |
52 | if (name.size() > 255) | |
53 | return -ENAMETOOLONG; | |
54 | return -EINVAL; | |
55 | } | |
56 | return 0; | |
57 | } | |
58 | ||
59 | inline int valid_fs_object_name(const string& name) { | |
60 | int rc = valid_s3_object_name(name); | |
61 | if (rc != 0) { | |
62 | if (name.size() > 1024) | |
63 | return -ENAMETOOLONG; | |
64 | return -EINVAL; | |
65 | } | |
66 | return 0; | |
67 | } | |
68 | ||
69 | LookupFHResult RGWLibFS::stat_bucket(RGWFileHandle* parent, const char *path, | |
70 | RGWLibFS::BucketStats& bs, | |
71 | uint32_t flags) | |
72 | { | |
73 | LookupFHResult fhr{nullptr, 0}; | |
74 | std::string bucket_name{path}; | |
75 | RGWStatBucketRequest req(cct, get_user(), bucket_name, bs); | |
76 | ||
77 | int rc = rgwlib.get_fe()->execute_req(&req); | |
78 | if ((rc == 0) && | |
79 | (req.get_ret() == 0) && | |
80 | (req.matched())) { | |
81 | fhr = lookup_fh(parent, path, | |
82 | (flags & RGWFileHandle::FLAG_LOCKED)| | |
83 | RGWFileHandle::FLAG_CREATE| | |
84 | RGWFileHandle::FLAG_BUCKET); | |
85 | if (get<0>(fhr)) { | |
86 | RGWFileHandle* rgw_fh = get<0>(fhr); | |
87 | if (! (flags & RGWFileHandle::FLAG_LOCKED)) { | |
88 | rgw_fh->mtx.lock(); | |
89 | } | |
90 | rgw_fh->set_times(req.get_ctime()); | |
91 | /* restore attributes */ | |
92 | auto ux_key = req.get_attr(RGW_ATTR_UNIX_KEY1); | |
93 | auto ux_attrs = req.get_attr(RGW_ATTR_UNIX1); | |
94 | if (ux_key && ux_attrs) { | |
95 | bool old_key = rgw_fh->decode_attrs(ux_key, ux_attrs); | |
96 | if (old_key) { | |
97 | update_fhk(rgw_fh); | |
98 | } | |
99 | } | |
100 | if (! (flags & RGWFileHandle::FLAG_LOCKED)) { | |
101 | rgw_fh->mtx.unlock(); | |
102 | } | |
103 | } | |
104 | } | |
105 | return fhr; | |
106 | } | |
107 | ||
108 | LookupFHResult RGWLibFS::stat_leaf(RGWFileHandle* parent, | |
109 | const char *path, | |
110 | enum rgw_fh_type type, | |
111 | uint32_t flags) | |
112 | { | |
113 | /* find either-of <object_name>, <object_name/>, only one of | |
114 | * which should exist; atomicity? */ | |
115 | using std::get; | |
116 | ||
117 | LookupFHResult fhr{nullptr, 0}; | |
118 | ||
119 | /* XXX the need for two round-trip operations to identify file or | |
120 | * directory leaf objects is unecessary--the current proposed | |
121 | * mechanism to avoid this is to store leaf object names with an | |
122 | * object locator w/o trailing slash */ | |
123 | ||
124 | std::string obj_path = parent->format_child_name(path, false); | |
125 | ||
126 | for (auto ix : { 0, 1, 2 }) { | |
127 | switch (ix) { | |
128 | case 0: | |
129 | { | |
130 | /* type hint */ | |
131 | if (type == RGW_FS_TYPE_DIRECTORY) | |
132 | continue; | |
133 | ||
134 | RGWStatObjRequest req(cct, get_user(), | |
135 | parent->bucket_name(), obj_path, | |
136 | RGWStatObjRequest::FLAG_NONE); | |
137 | int rc = rgwlib.get_fe()->execute_req(&req); | |
138 | if ((rc == 0) && | |
139 | (req.get_ret() == 0)) { | |
140 | fhr = lookup_fh(parent, path, RGWFileHandle::FLAG_CREATE); | |
141 | if (get<0>(fhr)) { | |
142 | RGWFileHandle* rgw_fh = get<0>(fhr); | |
143 | lock_guard guard(rgw_fh->mtx); | |
144 | rgw_fh->set_size(req.get_size()); | |
145 | rgw_fh->set_times(req.get_mtime()); | |
146 | /* restore attributes */ | |
147 | auto ux_key = req.get_attr(RGW_ATTR_UNIX_KEY1); | |
148 | auto ux_attrs = req.get_attr(RGW_ATTR_UNIX1); | |
149 | if (ux_key && ux_attrs) { | |
150 | bool old_key = rgw_fh->decode_attrs(ux_key, ux_attrs); | |
151 | if (old_key) { | |
152 | update_fhk(rgw_fh); | |
153 | } | |
154 | } | |
155 | } | |
156 | goto done; | |
157 | } | |
158 | } | |
159 | break; | |
160 | case 1: | |
161 | { | |
162 | /* try dir form */ | |
163 | /* type hint */ | |
164 | if (type == RGW_FS_TYPE_FILE) | |
165 | continue; | |
166 | ||
167 | obj_path += "/"; | |
168 | RGWStatObjRequest req(cct, get_user(), | |
169 | parent->bucket_name(), obj_path, | |
170 | RGWStatObjRequest::FLAG_NONE); | |
171 | int rc = rgwlib.get_fe()->execute_req(&req); | |
172 | if ((rc == 0) && | |
173 | (req.get_ret() == 0)) { | |
174 | fhr = lookup_fh(parent, path, RGWFileHandle::FLAG_DIRECTORY); | |
175 | if (get<0>(fhr)) { | |
176 | RGWFileHandle* rgw_fh = get<0>(fhr); | |
177 | lock_guard guard(rgw_fh->mtx); | |
178 | rgw_fh->set_size(req.get_size()); | |
179 | rgw_fh->set_times(req.get_mtime()); | |
180 | /* restore attributes */ | |
181 | auto ux_key = req.get_attr(RGW_ATTR_UNIX_KEY1); | |
182 | auto ux_attrs = req.get_attr(RGW_ATTR_UNIX1); | |
183 | if (ux_key && ux_attrs) { | |
184 | bool old_key = rgw_fh->decode_attrs(ux_key, ux_attrs); | |
185 | if (old_key) { | |
186 | update_fhk(rgw_fh); | |
187 | } | |
188 | } | |
189 | } | |
190 | goto done; | |
191 | } | |
192 | } | |
193 | break; | |
194 | case 2: | |
195 | { | |
196 | std::string object_name{path}; | |
197 | RGWStatLeafRequest req(cct, get_user(), parent, object_name); | |
198 | int rc = rgwlib.get_fe()->execute_req(&req); | |
199 | if ((rc == 0) && | |
200 | (req.get_ret() == 0)) { | |
201 | if (req.matched) { | |
202 | /* we need rgw object's key name equal to file name, if | |
203 | * not return NULL */ | |
204 | if ((flags & RGWFileHandle::FLAG_EXACT_MATCH) && | |
205 | !req.exact_matched) { | |
206 | lsubdout(get_context(), rgw, 15) | |
207 | << __func__ | |
208 | << ": stat leaf not exact match file name = " | |
209 | << path << dendl; | |
210 | goto done; | |
211 | } | |
212 | fhr = lookup_fh(parent, path, | |
213 | RGWFileHandle::FLAG_CREATE| | |
214 | ((req.is_dir) ? | |
215 | RGWFileHandle::FLAG_DIRECTORY : | |
216 | RGWFileHandle::FLAG_NONE)); | |
217 | /* XXX we don't have an object--in general, there need not | |
218 | * be one (just a path segment in some other object). In | |
219 | * actual leaf an object exists, but we'd need another round | |
220 | * trip to get attrs */ | |
221 | if (get<0>(fhr)) { | |
222 | /* for now use the parent object's mtime */ | |
223 | RGWFileHandle* rgw_fh = get<0>(fhr); | |
224 | lock_guard guard(rgw_fh->mtx); | |
225 | rgw_fh->set_mtime(parent->get_mtime()); | |
226 | } | |
227 | } | |
228 | } | |
229 | } | |
230 | break; | |
231 | default: | |
232 | /* not reached */ | |
233 | break; | |
234 | } | |
235 | } | |
236 | done: | |
237 | return fhr; | |
238 | } /* RGWLibFS::stat_leaf */ | |
239 | ||
240 | int RGWLibFS::read(RGWFileHandle* rgw_fh, uint64_t offset, size_t length, | |
241 | size_t* bytes_read, void* buffer, uint32_t flags) | |
242 | { | |
243 | if (! rgw_fh->is_file()) | |
244 | return -EINVAL; | |
245 | ||
246 | if (rgw_fh->deleted()) | |
247 | return -ESTALE; | |
248 | ||
249 | RGWReadRequest req(get_context(), get_user(), rgw_fh, offset, length, | |
250 | buffer); | |
251 | ||
252 | int rc = rgwlib.get_fe()->execute_req(&req); | |
253 | if ((rc == 0) && | |
254 | (req.get_ret() == 0)) { | |
255 | lock_guard(rgw_fh->mtx); | |
256 | rgw_fh->set_atime(real_clock::to_timespec(real_clock::now())); | |
257 | *bytes_read = req.nread; | |
258 | } | |
259 | ||
260 | return rc; | |
261 | } | |
262 | ||
263 | int RGWLibFS::unlink(RGWFileHandle* rgw_fh, const char* name, uint32_t flags) | |
264 | { | |
265 | int rc = 0; | |
266 | BucketStats bs; | |
267 | RGWFileHandle* parent = nullptr; | |
268 | RGWFileHandle* bkt_fh = nullptr; | |
269 | ||
270 | if (unlikely(flags & RGWFileHandle::FLAG_UNLINK_THIS)) { | |
271 | /* LOCKED */ | |
272 | parent = rgw_fh->get_parent(); | |
273 | } else { | |
274 | /* atomicity */ | |
275 | parent = rgw_fh; | |
276 | LookupFHResult fhr = lookup_fh(parent, name, RGWFileHandle::FLAG_LOCK); | |
277 | rgw_fh = get<0>(fhr); | |
278 | /* LOCKED */ | |
279 | } | |
280 | ||
281 | if (parent->is_root()) { | |
282 | /* a bucket may have an object storing Unix attributes, check | |
283 | * for and delete it */ | |
284 | LookupFHResult fhr; | |
285 | fhr = stat_bucket(parent, name, bs, (rgw_fh) ? | |
286 | RGWFileHandle::FLAG_LOCKED : | |
287 | RGWFileHandle::FLAG_NONE); | |
288 | bkt_fh = get<0>(fhr); | |
289 | if (unlikely(! bkt_fh)) { | |
290 | /* implies !rgw_fh, so also !LOCKED */ | |
291 | return -ENOENT; | |
292 | } | |
293 | ||
294 | if (bs.num_entries > 1) { | |
295 | unref(bkt_fh); /* return stat_bucket ref */ | |
296 | if (likely(!! rgw_fh)) { /* return lock and ref from | |
297 | * lookup_fh (or caller in the | |
298 | * special case of | |
299 | * RGWFileHandle::FLAG_UNLINK_THIS) */ | |
300 | rgw_fh->mtx.unlock(); | |
301 | unref(rgw_fh); | |
302 | } | |
303 | return -ENOTEMPTY; | |
304 | } else { | |
305 | /* delete object w/key "<bucket>/" (uxattrs), if any */ | |
306 | string oname{"/"}; | |
307 | RGWDeleteObjRequest req(cct, get_user(), bkt_fh->bucket_name(), oname); | |
308 | rc = rgwlib.get_fe()->execute_req(&req); | |
309 | /* don't care if ENOENT */ | |
310 | unref(bkt_fh); | |
311 | } | |
312 | ||
313 | string bname{name}; | |
314 | RGWDeleteBucketRequest req(cct, get_user(), bname); | |
315 | rc = rgwlib.get_fe()->execute_req(&req); | |
316 | if (! rc) { | |
317 | rc = req.get_ret(); | |
318 | } | |
319 | } else { | |
320 | /* | |
321 | * leaf object | |
322 | */ | |
323 | if (! rgw_fh) { | |
324 | /* XXX for now, peform a hard lookup to deduce the type of | |
325 | * object to be deleted ("foo" vs. "foo/")--also, ensures | |
326 | * atomicity at this endpoint */ | |
327 | struct rgw_file_handle *fh; | |
328 | rc = rgw_lookup(get_fs(), parent->get_fh(), name, &fh, | |
329 | RGW_LOOKUP_FLAG_NONE); | |
330 | if (!! rc) | |
331 | return rc; | |
332 | ||
333 | /* rgw_fh ref+ */ | |
334 | rgw_fh = get_rgwfh(fh); | |
335 | rgw_fh->mtx.lock(); /* LOCKED */ | |
336 | } | |
337 | ||
338 | std::string oname = rgw_fh->relative_object_name(); | |
339 | if (rgw_fh->is_dir()) { | |
340 | /* for the duration of our cache timer, trust positive | |
341 | * child cache */ | |
342 | if (rgw_fh->has_children()) { | |
343 | rgw_fh->mtx.unlock(); | |
344 | unref(rgw_fh); | |
345 | return(-ENOTEMPTY); | |
346 | } | |
347 | oname += "/"; | |
348 | } | |
349 | RGWDeleteObjRequest req(cct, get_user(), parent->bucket_name(), | |
350 | oname); | |
351 | rc = rgwlib.get_fe()->execute_req(&req); | |
352 | if (! rc) { | |
353 | rc = req.get_ret(); | |
354 | } | |
355 | } | |
356 | ||
357 | /* ENOENT when raced with other s3 gateway */ | |
358 | if (! rc || rc == -ENOENT) { | |
359 | rgw_fh->flags |= RGWFileHandle::FLAG_DELETED; | |
360 | fh_cache.remove(rgw_fh->fh.fh_hk.object, rgw_fh, | |
361 | RGWFileHandle::FHCache::FLAG_LOCK); | |
362 | } | |
363 | ||
364 | if (! rc) { | |
365 | real_time t = real_clock::now(); | |
366 | parent->set_mtime(real_clock::to_timespec(t)); | |
367 | parent->set_ctime(real_clock::to_timespec(t)); | |
368 | } | |
369 | ||
370 | rgw_fh->mtx.unlock(); | |
371 | unref(rgw_fh); | |
372 | ||
373 | return rc; | |
374 | } /* RGWLibFS::unlink */ | |
375 | ||
376 | int RGWLibFS::rename(RGWFileHandle* src_fh, RGWFileHandle* dst_fh, | |
377 | const char *_src_name, const char *_dst_name) | |
378 | ||
379 | { | |
380 | /* XXX initial implementation: try-copy, and delete if copy | |
381 | * succeeds */ | |
382 | int rc = -EINVAL; | |
383 | ||
384 | real_time t; | |
385 | ||
386 | std::string src_name{_src_name}; | |
387 | std::string dst_name{_dst_name}; | |
388 | ||
389 | /* atomicity */ | |
390 | LookupFHResult fhr = lookup_fh(src_fh, _src_name, RGWFileHandle::FLAG_LOCK); | |
391 | RGWFileHandle* rgw_fh = get<0>(fhr); | |
392 | ||
393 | /* should not happen */ | |
394 | if (! rgw_fh) { | |
395 | ldout(get_context(), 0) << __func__ | |
396 | << " BUG no such src renaming path=" | |
397 | << src_name | |
398 | << dendl; | |
399 | goto out; | |
400 | } | |
401 | ||
402 | /* forbid renaming of directories (unreasonable at scale) */ | |
403 | if (rgw_fh->is_dir()) { | |
404 | ldout(get_context(), 12) << __func__ | |
405 | << " rejecting attempt to rename directory path=" | |
406 | << rgw_fh->full_object_name() | |
407 | << dendl; | |
408 | rc = -EPERM; | |
409 | goto unlock; | |
410 | } | |
411 | ||
412 | /* forbid renaming open files (violates intent, for now) */ | |
413 | if (rgw_fh->is_open()) { | |
414 | ldout(get_context(), 12) << __func__ | |
415 | << " rejecting attempt to rename open file path=" | |
416 | << rgw_fh->full_object_name() | |
417 | << dendl; | |
418 | rc = -EPERM; | |
419 | goto unlock; | |
420 | } | |
421 | ||
422 | t = real_clock::now(); | |
423 | ||
424 | for (int ix : {0, 1}) { | |
425 | switch (ix) { | |
426 | case 0: | |
427 | { | |
428 | RGWCopyObjRequest req(cct, get_user(), src_fh, dst_fh, src_name, | |
429 | dst_name); | |
430 | int rc = rgwlib.get_fe()->execute_req(&req); | |
431 | if ((rc != 0) || | |
432 | ((rc = req.get_ret()) != 0)) { | |
433 | ldout(get_context(), 1) | |
434 | << __func__ | |
435 | << " rename step 0 failed src=" | |
436 | << src_fh->full_object_name() << " " << src_name | |
437 | << " dst=" << dst_fh->full_object_name() | |
438 | << " " << dst_name | |
439 | << "rc " << rc | |
440 | << dendl; | |
441 | goto unlock; | |
442 | } | |
443 | ldout(get_context(), 12) | |
444 | << __func__ | |
445 | << " rename step 0 success src=" | |
446 | << src_fh->full_object_name() << " " << src_name | |
447 | << " dst=" << dst_fh->full_object_name() | |
448 | << " " << dst_name | |
449 | << " rc " << rc | |
450 | << dendl; | |
451 | /* update dst change id */ | |
452 | dst_fh->set_times(t); | |
453 | } | |
454 | break; | |
455 | case 1: | |
456 | { | |
457 | rc = this->unlink(rgw_fh /* LOCKED */, _src_name, | |
458 | RGWFileHandle::FLAG_UNLINK_THIS); | |
459 | /* !LOCKED, -ref */ | |
460 | if (! rc) { | |
461 | ldout(get_context(), 12) | |
462 | << __func__ | |
463 | << " rename step 1 success src=" | |
464 | << src_fh->full_object_name() << " " << src_name | |
465 | << " dst=" << dst_fh->full_object_name() | |
466 | << " " << dst_name | |
467 | << " rc " << rc | |
468 | << dendl; | |
469 | /* update src change id */ | |
470 | src_fh->set_times(t); | |
471 | } else { | |
472 | ldout(get_context(), 1) | |
473 | << __func__ | |
474 | << " rename step 1 failed src=" | |
475 | << src_fh->full_object_name() << " " << src_name | |
476 | << " dst=" << dst_fh->full_object_name() | |
477 | << " " << dst_name | |
478 | << " rc " << rc | |
479 | << dendl; | |
480 | } | |
481 | } | |
482 | goto out; | |
483 | default: | |
484 | abort(); | |
485 | } /* switch */ | |
486 | } /* ix */ | |
487 | unlock: | |
488 | rgw_fh->mtx.unlock(); /* !LOCKED */ | |
489 | unref(rgw_fh); /* -ref */ | |
490 | ||
491 | out: | |
492 | return rc; | |
493 | } /* RGWLibFS::rename */ | |
494 | ||
495 | MkObjResult RGWLibFS::mkdir(RGWFileHandle* parent, const char *name, | |
496 | struct stat *st, uint32_t mask, uint32_t flags) | |
497 | { | |
498 | int rc, rc2; | |
499 | rgw_file_handle *lfh; | |
500 | ||
501 | rc = rgw_lookup(get_fs(), parent->get_fh(), name, &lfh, | |
502 | RGW_LOOKUP_FLAG_NONE); | |
503 | if (! rc) { | |
504 | /* conflict! */ | |
505 | rc = rgw_fh_rele(get_fs(), lfh, RGW_FH_RELE_FLAG_NONE); | |
506 | return MkObjResult{nullptr, -EEXIST}; | |
507 | } | |
508 | ||
509 | MkObjResult mkr{nullptr, -EINVAL}; | |
510 | LookupFHResult fhr; | |
511 | RGWFileHandle* rgw_fh = nullptr; | |
512 | buffer::list ux_key, ux_attrs; | |
513 | ||
514 | fhr = lookup_fh(parent, name, | |
515 | RGWFileHandle::FLAG_CREATE| | |
516 | RGWFileHandle::FLAG_DIRECTORY| | |
517 | RGWFileHandle::FLAG_LOCK); | |
518 | rgw_fh = get<0>(fhr); | |
519 | if (rgw_fh) { | |
520 | rgw_fh->create_stat(st, mask); | |
521 | rgw_fh->set_times(real_clock::now()); | |
522 | /* save attrs */ | |
523 | rgw_fh->encode_attrs(ux_key, ux_attrs); | |
524 | if (st) | |
525 | rgw_fh->stat(st); | |
526 | get<0>(mkr) = rgw_fh; | |
527 | } else { | |
528 | get<1>(mkr) = -EIO; | |
529 | return mkr; | |
530 | } | |
531 | ||
532 | if (parent->is_root()) { | |
533 | /* bucket */ | |
534 | string bname{name}; | |
535 | /* enforce S3 name restrictions */ | |
536 | rc = valid_fs_bucket_name(bname); | |
537 | if (rc != 0) { | |
538 | rgw_fh->flags |= RGWFileHandle::FLAG_DELETED; | |
539 | fh_cache.remove(rgw_fh->fh.fh_hk.object, rgw_fh, | |
540 | RGWFileHandle::FHCache::FLAG_LOCK); | |
541 | rgw_fh->mtx.unlock(); | |
542 | unref(rgw_fh); | |
543 | get<0>(mkr) = nullptr; | |
544 | get<1>(mkr) = rc; | |
545 | return mkr; | |
546 | } | |
547 | ||
548 | RGWCreateBucketRequest req(get_context(), get_user(), bname); | |
549 | ||
550 | /* save attrs */ | |
551 | req.emplace_attr(RGW_ATTR_UNIX_KEY1, std::move(ux_key)); | |
552 | req.emplace_attr(RGW_ATTR_UNIX1, std::move(ux_attrs)); | |
553 | ||
554 | rc = rgwlib.get_fe()->execute_req(&req); | |
555 | rc2 = req.get_ret(); | |
556 | } else { | |
557 | /* create an object representing the directory */ | |
558 | buffer::list bl; | |
559 | string dir_name = parent->format_child_name(name, true); | |
560 | ||
561 | /* need valid S3 name (characters, length <= 1024, etc) */ | |
562 | rc = valid_fs_object_name(dir_name); | |
563 | if (rc != 0) { | |
564 | rgw_fh->flags |= RGWFileHandle::FLAG_DELETED; | |
565 | fh_cache.remove(rgw_fh->fh.fh_hk.object, rgw_fh, | |
566 | RGWFileHandle::FHCache::FLAG_LOCK); | |
567 | rgw_fh->mtx.unlock(); | |
568 | unref(rgw_fh); | |
569 | get<0>(mkr) = nullptr; | |
570 | get<1>(mkr) = rc; | |
571 | return mkr; | |
572 | } | |
573 | ||
574 | RGWPutObjRequest req(get_context(), get_user(), parent->bucket_name(), | |
575 | dir_name, bl); | |
576 | ||
577 | /* save attrs */ | |
578 | req.emplace_attr(RGW_ATTR_UNIX_KEY1, std::move(ux_key)); | |
579 | req.emplace_attr(RGW_ATTR_UNIX1, std::move(ux_attrs)); | |
580 | ||
581 | rc = rgwlib.get_fe()->execute_req(&req); | |
582 | rc2 = req.get_ret(); | |
583 | } | |
584 | ||
585 | if (! ((rc == 0) && | |
586 | (rc2 == 0))) { | |
587 | /* op failed */ | |
588 | rgw_fh->flags |= RGWFileHandle::FLAG_DELETED; | |
589 | rgw_fh->mtx.unlock(); /* !LOCKED */ | |
590 | unref(rgw_fh); | |
591 | get<0>(mkr) = nullptr; | |
592 | /* fixup rc */ | |
593 | if (!rc) | |
594 | rc = rc2; | |
595 | } else { | |
596 | real_time t = real_clock::now(); | |
597 | parent->set_mtime(real_clock::to_timespec(t)); | |
598 | parent->set_ctime(real_clock::to_timespec(t)); | |
599 | rgw_fh->mtx.unlock(); /* !LOCKED */ | |
600 | } | |
601 | ||
602 | get<1>(mkr) = rc; | |
603 | ||
604 | return mkr; | |
605 | } /* RGWLibFS::mkdir */ | |
606 | ||
607 | MkObjResult RGWLibFS::create(RGWFileHandle* parent, const char *name, | |
608 | struct stat *st, uint32_t mask, uint32_t flags) | |
609 | { | |
610 | int rc, rc2; | |
611 | ||
612 | using std::get; | |
613 | ||
614 | rgw_file_handle *lfh; | |
615 | rc = rgw_lookup(get_fs(), parent->get_fh(), name, &lfh, | |
616 | RGW_LOOKUP_FLAG_NONE); | |
617 | if (! rc) { | |
618 | /* conflict! */ | |
619 | rc = rgw_fh_rele(get_fs(), lfh, RGW_FH_RELE_FLAG_NONE); | |
620 | return MkObjResult{nullptr, -EEXIST}; | |
621 | } | |
622 | ||
623 | /* expand and check name */ | |
624 | std::string obj_name = parent->format_child_name(name, false); | |
625 | rc = valid_fs_object_name(obj_name); | |
626 | if (rc != 0) { | |
627 | return MkObjResult{nullptr, rc}; | |
628 | } | |
629 | ||
630 | /* create it */ | |
631 | buffer::list bl; | |
632 | RGWPutObjRequest req(cct, get_user(), parent->bucket_name(), obj_name, bl); | |
633 | MkObjResult mkr{nullptr, -EINVAL}; | |
634 | ||
635 | rc = rgwlib.get_fe()->execute_req(&req); | |
636 | rc2 = req.get_ret(); | |
637 | ||
638 | if ((rc == 0) && | |
639 | (rc2 == 0)) { | |
640 | /* XXX atomicity */ | |
641 | LookupFHResult fhr = lookup_fh(parent, name, RGWFileHandle::FLAG_CREATE | | |
642 | RGWFileHandle::FLAG_LOCK); | |
643 | RGWFileHandle* rgw_fh = get<0>(fhr); | |
644 | if (rgw_fh) { | |
645 | if (get<1>(fhr) & RGWFileHandle::FLAG_CREATE) { | |
646 | /* fill in stat data */ | |
647 | real_time t = real_clock::now(); | |
648 | rgw_fh->create_stat(st, mask); | |
649 | rgw_fh->set_times(t); | |
650 | ||
651 | parent->set_mtime(real_clock::to_timespec(t)); | |
652 | parent->set_ctime(real_clock::to_timespec(t)); | |
653 | } | |
654 | if (st) | |
655 | (void) rgw_fh->stat(st); | |
656 | get<0>(mkr) = rgw_fh; | |
657 | rgw_fh->mtx.unlock(); | |
658 | } else | |
659 | rc = -EIO; | |
660 | } | |
661 | ||
662 | get<1>(mkr) = rc; | |
663 | ||
664 | return mkr; | |
665 | } /* RGWLibFS::create */ | |
666 | ||
667 | int RGWLibFS::getattr(RGWFileHandle* rgw_fh, struct stat* st) | |
668 | { | |
669 | switch(rgw_fh->fh.fh_type) { | |
670 | case RGW_FS_TYPE_FILE: | |
671 | { | |
672 | if (rgw_fh->deleted()) | |
673 | return -ESTALE; | |
674 | } | |
675 | break; | |
676 | default: | |
677 | break; | |
678 | }; | |
679 | ||
680 | return rgw_fh->stat(st); | |
681 | } /* RGWLibFS::getattr */ | |
682 | ||
683 | int RGWLibFS::setattr(RGWFileHandle* rgw_fh, struct stat* st, uint32_t mask, | |
684 | uint32_t flags) | |
685 | { | |
686 | int rc, rc2; | |
687 | buffer::list ux_key, ux_attrs; | |
688 | ||
689 | lock_guard guard(rgw_fh->mtx); | |
690 | ||
691 | switch(rgw_fh->fh.fh_type) { | |
692 | case RGW_FS_TYPE_FILE: | |
693 | { | |
694 | if (rgw_fh->deleted()) | |
695 | return -ESTALE; | |
696 | } | |
697 | break; | |
698 | default: | |
699 | break; | |
700 | }; | |
701 | ||
702 | string obj_name{rgw_fh->relative_object_name()}; | |
703 | ||
704 | if (rgw_fh->is_dir() && | |
705 | (likely(! rgw_fh->is_bucket()))) { | |
706 | obj_name += "/"; | |
707 | } | |
708 | ||
709 | RGWSetAttrsRequest req(cct, get_user(), rgw_fh->bucket_name(), obj_name); | |
710 | ||
711 | rgw_fh->create_stat(st, mask); | |
712 | rgw_fh->encode_attrs(ux_key, ux_attrs); | |
713 | ||
714 | /* save attrs */ | |
715 | req.emplace_attr(RGW_ATTR_UNIX_KEY1, std::move(ux_key)); | |
716 | req.emplace_attr(RGW_ATTR_UNIX1, std::move(ux_attrs)); | |
717 | ||
718 | rc = rgwlib.get_fe()->execute_req(&req); | |
719 | rc2 = req.get_ret(); | |
720 | ||
721 | if (rc == -ENOENT) { | |
722 | /* special case: materialize placeholder dir */ | |
723 | buffer::list bl; | |
724 | RGWPutObjRequest req(get_context(), get_user(), rgw_fh->bucket_name(), | |
725 | obj_name, bl); | |
726 | ||
727 | rgw_fh->encode_attrs(ux_key, ux_attrs); /* because std::moved */ | |
728 | ||
729 | /* save attrs */ | |
730 | req.emplace_attr(RGW_ATTR_UNIX_KEY1, std::move(ux_key)); | |
731 | req.emplace_attr(RGW_ATTR_UNIX1, std::move(ux_attrs)); | |
732 | ||
733 | rc = rgwlib.get_fe()->execute_req(&req); | |
734 | rc2 = req.get_ret(); | |
735 | } | |
736 | ||
737 | if ((rc != 0) || (rc2 != 0)) { | |
738 | return -EIO; | |
739 | } | |
740 | ||
741 | rgw_fh->set_ctime(real_clock::to_timespec(real_clock::now())); | |
742 | ||
743 | return 0; | |
744 | } /* RGWLibFS::setattr */ | |
745 | ||
746 | /* called under rgw_fh->mtx held */ | |
747 | void RGWLibFS::update_fhk(RGWFileHandle *rgw_fh) | |
748 | { | |
749 | int rc, rc2; | |
750 | string obj_name{rgw_fh->relative_object_name()}; | |
751 | buffer::list ux_key, ux_attrs; | |
752 | ||
753 | if (rgw_fh->is_dir() && | |
754 | (likely(! rgw_fh->is_bucket()))) { | |
755 | obj_name += "/"; | |
756 | } | |
757 | ||
758 | lsubdout(get_context(), rgw, 17) | |
759 | << __func__ | |
760 | << " update old versioned fhk : " << obj_name | |
761 | << dendl; | |
762 | ||
763 | RGWSetAttrsRequest req(cct, get_user(), rgw_fh->bucket_name(), obj_name); | |
764 | ||
765 | rgw_fh->encode_attrs(ux_key, ux_attrs); | |
766 | ||
767 | /* update ux_key only */ | |
768 | req.emplace_attr(RGW_ATTR_UNIX_KEY1, std::move(ux_key)); | |
769 | ||
770 | rc = rgwlib.get_fe()->execute_req(&req); | |
771 | rc2 = req.get_ret(); | |
772 | ||
773 | if ((rc != 0) || (rc2 != 0)) { | |
774 | lsubdout(get_context(), rgw, 17) | |
775 | << __func__ | |
776 | << " update fhk failed : " << obj_name | |
777 | << dendl; | |
778 | } | |
779 | } /* RGWLibFS::update_fhk */ | |
780 | ||
781 | void RGWLibFS::close() | |
782 | { | |
783 | state.flags |= FLAG_CLOSED; | |
784 | ||
785 | class ObjUnref | |
786 | { | |
787 | RGWLibFS* fs; | |
788 | public: | |
789 | ObjUnref(RGWLibFS* fs) : fs(fs) {} | |
790 | void operator()(RGWFileHandle* fh) const { | |
791 | lsubdout(fs->get_context(), rgw, 5) | |
792 | << __func__ | |
793 | << fh->name | |
794 | << " before ObjUnref refs=" << fh->get_refcnt() | |
795 | << dendl; | |
796 | fs->unref(fh); | |
797 | } | |
798 | }; | |
799 | ||
800 | /* force cache drain, forces objects to evict */ | |
801 | fh_cache.drain(ObjUnref(this), | |
802 | RGWFileHandle::FHCache::FLAG_LOCK); | |
803 | rgwlib.get_fe()->get_process()->unregister_fs(this); | |
804 | rele(); | |
805 | } /* RGWLibFS::close */ | |
806 | ||
807 | inline std::ostream& operator<<(std::ostream &os, struct timespec const &ts) { | |
808 | os << "<timespec: tv_sec="; | |
809 | os << ts.tv_sec; | |
810 | os << "; tv_nsec="; | |
811 | os << ts.tv_nsec; | |
812 | os << ">"; | |
813 | return os; | |
814 | } | |
815 | ||
816 | std::ostream& operator<<(std::ostream &os, RGWLibFS::event const &ev) { | |
817 | os << "<event:"; | |
818 | switch (ev.t) { | |
819 | case RGWLibFS::event::type::READDIR: | |
820 | os << "type=READDIR;"; | |
821 | break; | |
822 | default: | |
823 | os << "type=UNKNOWN;"; | |
824 | break; | |
825 | }; | |
826 | os << "fid=" << ev.fhk.fh_hk.bucket << ":" << ev.fhk.fh_hk.object | |
827 | << ";ts=" << ev.ts << ">"; | |
828 | return os; | |
829 | } | |
830 | ||
831 | void RGWLibFS::gc() | |
832 | { | |
833 | using std::get; | |
834 | using directory = RGWFileHandle::directory; | |
835 | ||
836 | /* dirent invalidate timeout--basically, the upper-bound on | |
837 | * inconsistency with the S3 namespace */ | |
838 | auto expire_s | |
839 | = get_context()->_conf->rgw_nfs_namespace_expire_secs; | |
840 | ||
841 | /* max events to gc in one cycle */ | |
842 | uint32_t max_ev = | |
843 | std::max(1, get_context()->_conf->rgw_nfs_max_gc); | |
844 | ||
845 | struct timespec now, expire_ts; | |
846 | event_vector ve; | |
847 | bool stop = false; | |
848 | std::deque<event> &events = state.events; | |
849 | ||
850 | do { | |
851 | (void) clock_gettime(CLOCK_MONOTONIC_COARSE, &now); | |
852 | lsubdout(get_context(), rgw, 15) | |
853 | << "GC: top of expire loop" | |
854 | << " now=" << now | |
855 | << " expire_s=" << expire_s | |
856 | << dendl; | |
857 | { | |
858 | lock_guard guard(state.mtx); /* LOCKED */ | |
859 | /* just return if no events */ | |
860 | if (events.empty()) { | |
861 | return; | |
862 | } | |
863 | uint32_t _max_ev = | |
864 | (events.size() < 500) ? max_ev : (events.size() / 4); | |
865 | for (uint32_t ix = 0; (ix < _max_ev) && (events.size() > 0); ++ix) { | |
866 | event& ev = events.front(); | |
867 | expire_ts = ev.ts; | |
868 | expire_ts.tv_sec += expire_s; | |
869 | if (expire_ts > now) { | |
870 | stop = true; | |
871 | break; | |
872 | } | |
873 | ve.push_back(ev); | |
874 | events.pop_front(); | |
875 | } | |
876 | } /* anon */ | |
877 | /* !LOCKED */ | |
878 | for (auto& ev : ve) { | |
879 | lsubdout(get_context(), rgw, 15) | |
880 | << "try-expire ev: " << ev << dendl; | |
881 | if (likely(ev.t == event::type::READDIR)) { | |
882 | RGWFileHandle* rgw_fh = lookup_handle(ev.fhk.fh_hk); | |
883 | lsubdout(get_context(), rgw, 15) | |
884 | << "ev rgw_fh: " << rgw_fh << dendl; | |
885 | if (rgw_fh) { | |
886 | RGWFileHandle::directory* d; | |
887 | if (unlikely(! rgw_fh->is_dir())) { | |
888 | lsubdout(get_context(), rgw, 0) | |
889 | << __func__ | |
890 | << " BUG non-directory found with READDIR event " | |
891 | << "(" << rgw_fh->bucket_name() << "," | |
892 | << rgw_fh->object_name() << ")" | |
893 | << dendl; | |
894 | goto rele; | |
895 | } | |
896 | /* maybe clear state */ | |
897 | d = get<directory>(&rgw_fh->variant_type); | |
898 | if (d) { | |
899 | struct timespec ev_ts = ev.ts; | |
900 | lock_guard guard(rgw_fh->mtx); | |
901 | struct timespec d_last_readdir = d->last_readdir; | |
902 | if (unlikely(ev_ts < d_last_readdir)) { | |
903 | /* readdir cycle in progress, don't invalidate */ | |
904 | lsubdout(get_context(), rgw, 15) | |
905 | << "GC: delay expiration for " | |
906 | << rgw_fh->object_name() | |
907 | << " ev.ts=" << ev_ts | |
908 | << " last_readdir=" << d_last_readdir | |
909 | << dendl; | |
910 | continue; | |
911 | } else { | |
912 | lsubdout(get_context(), rgw, 15) | |
913 | << "GC: expiring " | |
914 | << rgw_fh->object_name() | |
915 | << dendl; | |
916 | rgw_fh->clear_state(); | |
917 | rgw_fh->invalidate(); | |
918 | } | |
919 | } | |
920 | rele: | |
921 | unref(rgw_fh); | |
922 | } /* rgw_fh */ | |
923 | } /* event::type::READDIR */ | |
924 | } /* ev */ | |
925 | ve.clear(); | |
926 | } while (! (stop || shutdown)); | |
927 | } /* RGWLibFS::gc */ | |
928 | ||
929 | std::ostream& operator<<(std::ostream &os, | |
930 | RGWFileHandle const &rgw_fh) | |
931 | { | |
932 | const auto& fhk = rgw_fh.get_key(); | |
933 | const auto& fh = const_cast<RGWFileHandle&>(rgw_fh).get_fh(); | |
934 | os << "<RGWFileHandle:"; | |
935 | os << "addr=" << &rgw_fh << ";"; | |
936 | switch (fh->fh_type) { | |
937 | case RGW_FS_TYPE_DIRECTORY: | |
938 | os << "type=DIRECTORY;"; | |
939 | break; | |
940 | case RGW_FS_TYPE_FILE: | |
941 | os << "type=FILE;"; | |
942 | break; | |
943 | default: | |
944 | os << "type=UNKNOWN;"; | |
945 | break; | |
946 | }; | |
947 | os << "fid=" << fhk.fh_hk.bucket << ":" << fhk.fh_hk.object << ";"; | |
948 | os << "name=" << rgw_fh.object_name() << ";"; | |
949 | os << "refcnt=" << rgw_fh.get_refcnt() << ";"; | |
950 | os << ">"; | |
951 | return os; | |
952 | } | |
953 | ||
954 | RGWFileHandle::~RGWFileHandle() { | |
955 | /* in the non-delete case, handle may still be in handle table */ | |
956 | if (fh_hook.is_linked()) { | |
957 | fs->fh_cache.remove(fh.fh_hk.object, this, FHCache::FLAG_LOCK); | |
958 | } | |
959 | /* cond-unref parent */ | |
960 | if (parent && (! parent->is_root())) { | |
961 | /* safe because if parent->unref causes its deletion, | |
962 | * there are a) by refcnt, no other objects/paths pointing | |
963 | * to it and b) by the semantics of valid iteration of | |
964 | * fh_lru (observed, e.g., by cohort_lru<T,...>::drain()) | |
965 | * no unsafe iterators reaching it either--n.b., this constraint | |
966 | * is binding oncode which may in future attempt to e.g., | |
967 | * cause the eviction of objects in LRU order */ | |
968 | (void) get_fs()->unref(parent); | |
969 | } | |
970 | } | |
971 | ||
972 | void RGWFileHandle::encode_attrs(ceph::buffer::list& ux_key1, | |
973 | ceph::buffer::list& ux_attrs1) | |
974 | { | |
975 | fh_key fhk(this->fh.fh_hk); | |
976 | rgw::encode(fhk, ux_key1); | |
977 | rgw::encode(*this, ux_attrs1); | |
978 | } /* RGWFileHandle::encode_attrs */ | |
979 | ||
980 | bool RGWFileHandle::decode_attrs(const ceph::buffer::list* ux_key1, | |
981 | const ceph::buffer::list* ux_attrs1) | |
982 | { | |
983 | bool old_key = false; | |
984 | fh_key fhk; | |
985 | auto bl_iter_key1 = const_cast<buffer::list*>(ux_key1)->begin(); | |
986 | rgw::decode(fhk, bl_iter_key1); | |
987 | if (fhk.version >= 2) { | |
988 | assert(this->fh.fh_hk == fhk.fh_hk); | |
989 | } else { | |
990 | old_key = true; | |
991 | } | |
992 | ||
993 | auto bl_iter_unix1 = const_cast<buffer::list*>(ux_attrs1)->begin(); | |
994 | rgw::decode(*this, bl_iter_unix1); | |
995 | ||
996 | return old_key; | |
997 | } /* RGWFileHandle::decode_attrs */ | |
998 | ||
999 | bool RGWFileHandle::reclaim() { | |
1000 | lsubdout(fs->get_context(), rgw, 17) | |
1001 | << __func__ << " " << *this | |
1002 | << dendl; | |
1003 | /* remove if still in fh_cache */ | |
1004 | if (fh_hook.is_linked()) { | |
1005 | fs->fh_cache.remove(fh.fh_hk.object, this, FHCache::FLAG_LOCK); | |
1006 | } | |
1007 | return true; | |
1008 | } /* RGWFileHandle::reclaim */ | |
1009 | ||
1010 | bool RGWFileHandle::has_children() const | |
1011 | { | |
1012 | if (unlikely(! is_dir())) | |
1013 | return false; | |
1014 | ||
1015 | RGWRMdirCheck req(fs->get_context(), fs->get_user(), this); | |
1016 | int rc = rgwlib.get_fe()->execute_req(&req); | |
1017 | if (! rc) { | |
1018 | return req.valid && req.has_children; | |
1019 | } | |
1020 | ||
1021 | return false; | |
1022 | } | |
1023 | ||
1024 | int RGWFileHandle::readdir(rgw_readdir_cb rcb, void *cb_arg, uint64_t *offset, | |
1025 | bool *eof, uint32_t flags) | |
1026 | { | |
1027 | using event = RGWLibFS::event; | |
1028 | int rc = 0; | |
1029 | struct timespec now; | |
1030 | CephContext* cct = fs->get_context(); | |
1031 | ||
1032 | if ((*offset == 0) && | |
1033 | (flags & RGW_READDIR_FLAG_DOTDOT)) { | |
1034 | /* send '.' and '..' with their NFS-defined offsets */ | |
1035 | rcb(".", cb_arg, 1, RGW_LOOKUP_FLAG_DIR); | |
1036 | rcb("..", cb_arg, 2, RGW_LOOKUP_FLAG_DIR); | |
1037 | } | |
1038 | ||
1039 | lsubdout(fs->get_context(), rgw, 15) | |
1040 | << __func__ | |
1041 | << " offset=" << *offset | |
1042 | << dendl; | |
1043 | ||
1044 | directory* d = get<directory>(&variant_type); | |
1045 | if (d) { | |
1046 | (void) clock_gettime(CLOCK_MONOTONIC_COARSE, &now); /* !LOCKED */ | |
1047 | lock_guard guard(mtx); | |
1048 | d->last_readdir = now; | |
1049 | } | |
1050 | ||
1051 | if (is_root()) { | |
1052 | RGWListBucketsRequest req(cct, fs->get_user(), this, rcb, cb_arg, | |
1053 | offset); | |
1054 | rc = rgwlib.get_fe()->execute_req(&req); | |
1055 | if (! rc) { | |
1056 | (void) clock_gettime(CLOCK_MONOTONIC_COARSE, &now); /* !LOCKED */ | |
1057 | lock_guard guard(mtx); | |
1058 | state.atime = now; | |
1059 | if (*offset == 0) | |
1060 | set_nlink(2); | |
1061 | inc_nlink(req.d_count); | |
1062 | *eof = req.eof(); | |
1063 | event ev(event::type::READDIR, get_key(), state.atime); | |
1064 | lock_guard sguard(fs->state.mtx); | |
1065 | fs->state.push_event(ev); | |
1066 | } | |
1067 | } else { | |
1068 | RGWReaddirRequest req(cct, fs->get_user(), this, rcb, cb_arg, offset); | |
1069 | rc = rgwlib.get_fe()->execute_req(&req); | |
1070 | if (! rc) { | |
1071 | (void) clock_gettime(CLOCK_MONOTONIC_COARSE, &now); /* !LOCKED */ | |
1072 | lock_guard guard(mtx); | |
1073 | state.atime = now; | |
1074 | if (*offset == 0) | |
1075 | set_nlink(2); | |
1076 | inc_nlink(req.d_count); | |
1077 | *eof = req.eof(); | |
1078 | event ev(event::type::READDIR, get_key(), state.atime); | |
1079 | lock_guard sguard(fs->state.mtx); | |
1080 | fs->state.push_event(ev); | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | lsubdout(fs->get_context(), rgw, 15) | |
1085 | << __func__ | |
1086 | << " final link count=" << state.nlink | |
1087 | << dendl; | |
1088 | ||
1089 | return rc; | |
1090 | } /* RGWFileHandle::readdir */ | |
1091 | ||
1092 | int RGWFileHandle::write(uint64_t off, size_t len, size_t *bytes_written, | |
1093 | void *buffer) | |
1094 | { | |
1095 | using std::get; | |
1096 | using WriteCompletion = RGWLibFS::WriteCompletion; | |
1097 | ||
1098 | lock_guard guard(mtx); | |
1099 | ||
1100 | int rc = 0; | |
1101 | ||
1102 | file* f = get<file>(&variant_type); | |
1103 | if (! f) | |
1104 | return -EISDIR; | |
1105 | ||
1106 | if (deleted()) { | |
1107 | lsubdout(fs->get_context(), rgw, 5) | |
1108 | << __func__ | |
1109 | << " write attempted on deleted object " | |
1110 | << this->object_name() | |
1111 | << dendl; | |
1112 | /* zap write transaction, if any */ | |
1113 | if (f->write_req) { | |
1114 | delete f->write_req; | |
1115 | f->write_req = nullptr; | |
1116 | } | |
1117 | return -ESTALE; | |
1118 | } | |
1119 | ||
1120 | if (! f->write_req) { | |
1121 | /* guard--we do not support (e.g., COW-backed) partial writes */ | |
1122 | if (off != 0) { | |
1123 | lsubdout(fs->get_context(), rgw, 5) | |
1124 | << __func__ | |
1125 | << " " << object_name() | |
1126 | << " non-0 initial write position " << off | |
1127 | << dendl; | |
1128 | return -EIO; | |
1129 | } | |
1130 | ||
1131 | /* start */ | |
1132 | std::string object_name = relative_object_name(); | |
1133 | f->write_req = | |
1134 | new RGWWriteRequest(fs->get_context(), fs->get_user(), this, | |
1135 | bucket_name(), object_name); | |
1136 | rc = rgwlib.get_fe()->start_req(f->write_req); | |
1137 | if (rc < 0) { | |
1138 | lsubdout(fs->get_context(), rgw, 5) | |
1139 | << __func__ | |
1140 | << this->object_name() | |
1141 | << " write start failed " << off | |
1142 | << " (" << rc << ")" | |
1143 | << dendl; | |
1144 | /* zap failed write transaction */ | |
1145 | delete f->write_req; | |
1146 | f->write_req = nullptr; | |
1147 | return -EIO; | |
1148 | } else { | |
1149 | if (stateless_open()) { | |
1150 | /* start write timer */ | |
1151 | f->write_req->timer_id = | |
1152 | RGWLibFS::write_timer.add_event( | |
1153 | std::chrono::seconds(RGWLibFS::write_completion_interval_s), | |
1154 | WriteCompletion(*this)); | |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | buffer::list bl; | |
1160 | /* XXXX */ | |
1161 | #if 0 | |
1162 | bl.push_back( | |
1163 | buffer::create_static(len, static_cast<char*>(buffer))); | |
1164 | #else | |
1165 | bl.push_back( | |
1166 | buffer::copy(static_cast<char*>(buffer), len)); | |
1167 | #endif | |
1168 | ||
1169 | f->write_req->put_data(off, bl); | |
1170 | rc = f->write_req->exec_continue(); | |
1171 | ||
1172 | if (rc == 0) { | |
1173 | size_t min_size = off + len; | |
1174 | if (min_size > get_size()) | |
1175 | set_size(min_size); | |
1176 | if (stateless_open()) { | |
1177 | /* bump write timer */ | |
1178 | RGWLibFS::write_timer.adjust_event( | |
1179 | f->write_req->timer_id, std::chrono::seconds(10)); | |
1180 | } | |
1181 | } else { | |
1182 | /* continuation failed (e.g., non-contiguous write position) */ | |
1183 | lsubdout(fs->get_context(), rgw, 5) | |
1184 | << __func__ | |
1185 | << object_name() | |
1186 | << " failed write at position " << off | |
1187 | << " (fails write transaction) " | |
1188 | << dendl; | |
1189 | /* zap failed write transaction */ | |
1190 | delete f->write_req; | |
1191 | f->write_req = nullptr; | |
1192 | rc = -EIO; | |
1193 | } | |
1194 | ||
1195 | *bytes_written = (rc == 0) ? len : 0; | |
1196 | return rc; | |
1197 | } /* RGWFileHandle::write */ | |
1198 | ||
1199 | int RGWFileHandle::write_finish(uint32_t flags) | |
1200 | { | |
1201 | unique_lock guard{mtx, std::defer_lock}; | |
1202 | int rc = 0; | |
1203 | ||
1204 | if (! (flags & FLAG_LOCKED)) { | |
1205 | guard.lock(); | |
1206 | } | |
1207 | ||
1208 | file* f = get<file>(&variant_type); | |
1209 | if (f && (f->write_req)) { | |
1210 | lsubdout(fs->get_context(), rgw, 10) | |
1211 | << __func__ | |
1212 | << " finishing write trans on " << object_name() | |
1213 | << dendl; | |
1214 | rc = rgwlib.get_fe()->finish_req(f->write_req); | |
1215 | if (! rc) { | |
1216 | rc = f->write_req->get_ret(); | |
1217 | } | |
1218 | delete f->write_req; | |
1219 | f->write_req = nullptr; | |
1220 | } | |
1221 | ||
1222 | return rc; | |
1223 | } /* RGWFileHandle::write_finish */ | |
1224 | ||
1225 | int RGWFileHandle::close() | |
1226 | { | |
1227 | lock_guard guard(mtx); | |
1228 | ||
1229 | int rc = write_finish(FLAG_LOCKED); | |
1230 | ||
1231 | flags &= ~FLAG_OPEN; | |
1232 | flags &= ~FLAG_STATELESS_OPEN; | |
1233 | ||
1234 | return rc; | |
1235 | } /* RGWFileHandle::close */ | |
1236 | ||
1237 | RGWFileHandle::file::~file() | |
1238 | { | |
1239 | delete write_req; | |
1240 | } | |
1241 | ||
1242 | void RGWFileHandle::clear_state() | |
1243 | { | |
1244 | directory* d = get<directory>(&variant_type); | |
1245 | if (d) { | |
1246 | state.nlink = 2; | |
1247 | d->last_marker = rgw_obj_key{}; | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | void RGWFileHandle::invalidate() { | |
1252 | RGWLibFS *fs = get_fs(); | |
1253 | if (fs->invalidate_cb) { | |
1254 | fs->invalidate_cb(fs->invalidate_arg, get_key().fh_hk); | |
1255 | } | |
1256 | } | |
1257 | ||
1258 | int RGWWriteRequest::exec_start() { | |
1259 | struct req_state* s = get_state(); | |
1260 | ||
1261 | auto compression_type = | |
1262 | get_store()->get_zone_params().get_compression_type( | |
1263 | s->bucket_info.placement_rule); | |
1264 | ||
1265 | /* not obviously supportable */ | |
1266 | assert(! dlo_manifest); | |
1267 | assert(! slo_info); | |
1268 | ||
1269 | perfcounter->inc(l_rgw_put); | |
1270 | op_ret = -EINVAL; | |
1271 | ||
1272 | if (s->object.empty()) { | |
1273 | ldout(s->cct, 0) << __func__ << " called on empty object" << dendl; | |
1274 | goto done; | |
1275 | } | |
1276 | ||
1277 | op_ret = get_params(); | |
1278 | if (op_ret < 0) | |
1279 | goto done; | |
1280 | ||
1281 | op_ret = get_system_versioning_params(s, &olh_epoch, &version_id); | |
1282 | if (op_ret < 0) { | |
1283 | goto done; | |
1284 | } | |
1285 | ||
1286 | /* user-supplied MD5 check skipped (not supplied) */ | |
1287 | /* early quota check skipped--we don't have size yet */ | |
1288 | /* skipping user-supplied etag--we might have one in future, but | |
1289 | * like data it and other attrs would arrive after open */ | |
1290 | processor = select_processor(*static_cast<RGWObjectCtx *>(s->obj_ctx), | |
1291 | &multipart); | |
1292 | op_ret = processor->prepare(get_store(), NULL); | |
1293 | if (op_ret < 0) { | |
1294 | ldout(s->cct, 20) << "processor->prepare() returned ret=" << op_ret | |
1295 | << dendl; | |
1296 | goto done; | |
1297 | } | |
1298 | ||
1299 | filter = processor; | |
1300 | if (compression_type != "none") { | |
1301 | plugin = Compressor::create(s->cct, compression_type); | |
1302 | if (! plugin) { | |
1303 | ldout(s->cct, 1) << "Cannot load plugin for rgw_compression_type " | |
1304 | << compression_type << dendl; | |
1305 | } else { | |
1306 | compressor.emplace(s->cct, plugin, filter); | |
1307 | filter = &*compressor; | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | done: | |
1312 | return op_ret; | |
1313 | } /* exec_start */ | |
1314 | ||
1315 | int RGWWriteRequest::exec_continue() | |
1316 | { | |
1317 | struct req_state* s = get_state(); | |
1318 | op_ret = 0; | |
1319 | ||
1320 | /* check guards (e.g., contig write) */ | |
1321 | if (eio) | |
1322 | return -EIO; | |
1323 | ||
1324 | size_t len = data.length(); | |
1325 | if (! len) | |
1326 | return 0; | |
1327 | ||
1328 | /* XXX we are currently synchronous--supplied data buffers cannot | |
1329 | * be used after the caller returns */ | |
1330 | bool need_to_wait = true; | |
1331 | bufferlist orig_data; | |
1332 | ||
1333 | if (need_to_wait) { | |
1334 | orig_data = data; | |
1335 | } | |
1336 | hash.Update((const byte *)data.c_str(), data.length()); | |
1337 | op_ret = put_data_and_throttle(filter, data, ofs, need_to_wait); | |
1338 | if (op_ret < 0) { | |
1339 | if (!need_to_wait || op_ret != -EEXIST) { | |
1340 | ldout(s->cct, 20) << "processor->thottle_data() returned ret=" | |
1341 | << op_ret << dendl; | |
1342 | goto done; | |
1343 | } | |
1344 | ||
1345 | ldout(s->cct, 5) << "NOTICE: processor->throttle_data() returned -EEXIST, need to restart write" << dendl; | |
1346 | ||
1347 | /* restore original data */ | |
1348 | data.swap(orig_data); | |
1349 | ||
1350 | /* restart processing with different oid suffix */ | |
1351 | dispose_processor(processor); | |
1352 | processor = select_processor(*static_cast<RGWObjectCtx *>(s->obj_ctx), | |
1353 | &multipart); | |
1354 | filter = processor; | |
1355 | ||
1356 | string oid_rand; | |
1357 | char buf[33]; | |
1358 | gen_rand_alphanumeric(get_store()->ctx(), buf, sizeof(buf) - 1); | |
1359 | oid_rand.append(buf); | |
1360 | ||
1361 | op_ret = processor->prepare(get_store(), &oid_rand); | |
1362 | if (op_ret < 0) { | |
1363 | ldout(s->cct, 0) << "ERROR: processor->prepare() returned " | |
1364 | << op_ret << dendl; | |
1365 | goto done; | |
1366 | } | |
1367 | ||
1368 | /* restore compression filter, if any */ | |
1369 | if (compressor) { | |
1370 | compressor.emplace(s->cct, plugin, filter); | |
1371 | filter = &*compressor; | |
1372 | } | |
1373 | ||
1374 | op_ret = put_data_and_throttle(filter, data, ofs, false); | |
1375 | if (op_ret < 0) { | |
1376 | goto done; | |
1377 | } | |
1378 | } | |
1379 | bytes_written += len; | |
1380 | ||
1381 | done: | |
1382 | return op_ret; | |
1383 | } /* exec_continue */ | |
1384 | ||
1385 | int RGWWriteRequest::exec_finish() | |
1386 | { | |
1387 | buffer::list bl, aclbl, ux_key, ux_attrs; | |
1388 | map<string, string>::iterator iter; | |
1389 | char calc_md5[CEPH_CRYPTO_MD5_DIGESTSIZE * 2 + 1]; | |
1390 | unsigned char m[CEPH_CRYPTO_MD5_DIGESTSIZE]; | |
1391 | struct req_state* s = get_state(); | |
1392 | ||
1393 | size_t osize = rgw_fh->get_size(); | |
1394 | struct timespec octime = rgw_fh->get_ctime(); | |
1395 | struct timespec omtime = rgw_fh->get_mtime(); | |
1396 | real_time appx_t = real_clock::now(); | |
1397 | ||
1398 | s->obj_size = ofs; // XXX check ofs | |
1399 | perfcounter->inc(l_rgw_put_b, s->obj_size); | |
1400 | ||
1401 | op_ret = get_store()->check_quota(s->bucket_owner.get_id(), s->bucket, | |
1402 | user_quota, bucket_quota, s->obj_size); | |
1403 | if (op_ret < 0) { | |
1404 | goto done; | |
1405 | } | |
1406 | ||
1407 | op_ret = get_store()->check_bucket_shards(s->bucket_info, s->bucket, bucket_quota); | |
1408 | if (op_ret < 0) { | |
1409 | goto done; | |
1410 | } | |
1411 | ||
1412 | hash.Final(m); | |
1413 | ||
1414 | if (compressor && compressor->is_compressed()) { | |
1415 | bufferlist tmp; | |
1416 | RGWCompressionInfo cs_info; | |
1417 | cs_info.compression_type = plugin->get_type_name(); | |
1418 | cs_info.orig_size = s->obj_size; | |
1419 | cs_info.blocks = std::move(compressor->get_compression_blocks()); | |
1420 | ::encode(cs_info, tmp); | |
1421 | attrs[RGW_ATTR_COMPRESSION] = tmp; | |
1422 | ldout(s->cct, 20) << "storing " << RGW_ATTR_COMPRESSION | |
1423 | << " with type=" << cs_info.compression_type | |
1424 | << ", orig_size=" << cs_info.orig_size | |
1425 | << ", blocks=" << cs_info.blocks.size() << dendl; | |
1426 | } | |
1427 | ||
1428 | buf_to_hex(m, CEPH_CRYPTO_MD5_DIGESTSIZE, calc_md5); | |
1429 | etag = calc_md5; | |
1430 | ||
1431 | bl.append(etag.c_str(), etag.size() + 1); | |
1432 | emplace_attr(RGW_ATTR_ETAG, std::move(bl)); | |
1433 | ||
1434 | policy.encode(aclbl); | |
1435 | emplace_attr(RGW_ATTR_ACL, std::move(aclbl)); | |
1436 | ||
1437 | /* unix attrs */ | |
1438 | rgw_fh->set_mtime(real_clock::to_timespec(appx_t)); | |
1439 | rgw_fh->set_ctime(real_clock::to_timespec(appx_t)); | |
1440 | rgw_fh->set_size(bytes_written); | |
1441 | rgw_fh->encode_attrs(ux_key, ux_attrs); | |
1442 | ||
1443 | emplace_attr(RGW_ATTR_UNIX_KEY1, std::move(ux_key)); | |
1444 | emplace_attr(RGW_ATTR_UNIX1, std::move(ux_attrs)); | |
1445 | ||
1446 | for (iter = s->generic_attrs.begin(); iter != s->generic_attrs.end(); | |
1447 | ++iter) { | |
1448 | buffer::list& attrbl = attrs[iter->first]; | |
1449 | const string& val = iter->second; | |
1450 | attrbl.append(val.c_str(), val.size() + 1); | |
1451 | } | |
1452 | ||
1453 | rgw_get_request_metadata(s->cct, s->info, attrs); | |
1454 | encode_delete_at_attr(delete_at, attrs); | |
1455 | ||
1456 | /* Add a custom metadata to expose the information whether an object | |
1457 | * is an SLO or not. Appending the attribute must be performed AFTER | |
1458 | * processing any input from user in order to prohibit overwriting. */ | |
1459 | if (unlikely(!! slo_info)) { | |
1460 | buffer::list slo_userindicator_bl; | |
1461 | ::encode("True", slo_userindicator_bl); | |
1462 | emplace_attr(RGW_ATTR_SLO_UINDICATOR, std::move(slo_userindicator_bl)); | |
1463 | } | |
1464 | ||
1465 | op_ret = processor->complete(s->obj_size, etag, &mtime, real_time(), attrs, | |
1466 | (delete_at ? *delete_at : real_time()), | |
1467 | if_match, if_nomatch); | |
1468 | if (op_ret != 0) { | |
1469 | /* revert attr updates */ | |
1470 | rgw_fh->set_mtime(omtime); | |
1471 | rgw_fh->set_ctime(octime); | |
1472 | rgw_fh->set_size(osize); | |
1473 | } | |
1474 | ||
1475 | done: | |
1476 | dispose_processor(processor); | |
1477 | perfcounter->tinc(l_rgw_put_lat, | |
1478 | (ceph_clock_now() - s->time)); | |
1479 | return op_ret; | |
1480 | } /* exec_finish */ | |
1481 | ||
1482 | } /* namespace rgw */ | |
1483 | ||
1484 | /* librgw */ | |
1485 | extern "C" { | |
1486 | ||
1487 | void rgwfile_version(int *major, int *minor, int *extra) | |
1488 | { | |
1489 | if (major) | |
1490 | *major = LIBRGW_FILE_VER_MAJOR; | |
1491 | if (minor) | |
1492 | *minor = LIBRGW_FILE_VER_MINOR; | |
1493 | if (extra) | |
1494 | *extra = LIBRGW_FILE_VER_EXTRA; | |
1495 | } | |
1496 | ||
1497 | /* | |
1498 | attach rgw namespace | |
1499 | */ | |
1500 | int rgw_mount(librgw_t rgw, const char *uid, const char *acc_key, | |
1501 | const char *sec_key, struct rgw_fs **rgw_fs, | |
1502 | uint32_t flags) | |
1503 | { | |
1504 | int rc = 0; | |
1505 | ||
1506 | /* stash access data for "mount" */ | |
1507 | RGWLibFS* new_fs = new RGWLibFS(static_cast<CephContext*>(rgw), uid, acc_key, | |
1508 | sec_key); | |
1509 | assert(new_fs); | |
1510 | ||
1511 | rc = new_fs->authorize(rgwlib.get_store()); | |
1512 | if (rc != 0) { | |
1513 | delete new_fs; | |
1514 | return -EINVAL; | |
1515 | } | |
1516 | ||
1517 | /* register fs for shared gc */ | |
1518 | rgwlib.get_fe()->get_process()->register_fs(new_fs); | |
1519 | ||
1520 | struct rgw_fs *fs = new_fs->get_fs(); | |
1521 | fs->rgw = rgw; | |
1522 | ||
1523 | /* XXX we no longer assume "/" is unique, but we aren't tracking the | |
1524 | * roots atm */ | |
1525 | ||
1526 | *rgw_fs = fs; | |
1527 | ||
1528 | return 0; | |
1529 | } | |
1530 | ||
1531 | /* | |
1532 | register invalidate callbacks | |
1533 | */ | |
1534 | int rgw_register_invalidate(struct rgw_fs *rgw_fs, rgw_fh_callback_t cb, | |
1535 | void *arg, uint32_t flags) | |
1536 | ||
1537 | { | |
1538 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1539 | return fs->register_invalidate(cb, arg, flags); | |
1540 | } | |
1541 | ||
1542 | /* | |
1543 | detach rgw namespace | |
1544 | */ | |
1545 | int rgw_umount(struct rgw_fs *rgw_fs, uint32_t flags) | |
1546 | { | |
1547 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1548 | fs->close(); | |
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | /* | |
1553 | get filesystem attributes | |
1554 | */ | |
1555 | int rgw_statfs(struct rgw_fs *rgw_fs, | |
1556 | struct rgw_file_handle *parent_fh, | |
1557 | struct rgw_statvfs *vfs_st, uint32_t flags) | |
1558 | { | |
1559 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1560 | ||
1561 | /* XXX for now, just publish a huge capacity and | |
1562 | * limited utiliztion */ | |
1563 | vfs_st->f_bsize = 1024*1024 /* 1M */; | |
1564 | vfs_st->f_frsize = 1024; /* minimal allocation unit (who cares) */ | |
1565 | vfs_st->f_blocks = UINT64_MAX; | |
1566 | vfs_st->f_bfree = UINT64_MAX; | |
1567 | vfs_st->f_bavail = UINT64_MAX; | |
1568 | vfs_st->f_files = 1024; /* object count, do we have an est? */ | |
1569 | vfs_st->f_ffree = UINT64_MAX; | |
1570 | vfs_st->f_fsid[0] = fs->get_inst(); | |
1571 | vfs_st->f_fsid[1] = fs->get_inst(); | |
1572 | vfs_st->f_flag = 0; | |
1573 | vfs_st->f_namemax = 4096; | |
1574 | return 0; | |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | generic create -- create an empty regular file | |
1579 | */ | |
1580 | int rgw_create(struct rgw_fs *rgw_fs, struct rgw_file_handle *parent_fh, | |
1581 | const char *name, struct stat *st, uint32_t mask, | |
1582 | struct rgw_file_handle **fh, uint32_t posix_flags, | |
1583 | uint32_t flags) | |
1584 | { | |
1585 | using std::get; | |
1586 | ||
1587 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1588 | RGWFileHandle* parent = get_rgwfh(parent_fh); | |
1589 | ||
1590 | if ((! parent) || | |
1591 | (parent->is_root()) || | |
1592 | (parent->is_file())) { | |
1593 | /* bad parent */ | |
1594 | return -EINVAL; | |
1595 | } | |
1596 | ||
1597 | MkObjResult fhr = fs->create(parent, name, st, mask, flags); | |
1598 | RGWFileHandle *nfh = get<0>(fhr); // nullptr if !success | |
1599 | ||
1600 | if (nfh) | |
1601 | *fh = nfh->get_fh(); | |
1602 | ||
1603 | return get<1>(fhr); | |
1604 | } /* rgw_create */ | |
1605 | ||
1606 | /* | |
1607 | create a new directory | |
1608 | */ | |
1609 | int rgw_mkdir(struct rgw_fs *rgw_fs, | |
1610 | struct rgw_file_handle *parent_fh, | |
1611 | const char *name, struct stat *st, uint32_t mask, | |
1612 | struct rgw_file_handle **fh, uint32_t flags) | |
1613 | { | |
1614 | using std::get; | |
1615 | ||
1616 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1617 | RGWFileHandle* parent = get_rgwfh(parent_fh); | |
1618 | ||
1619 | if (! parent) { | |
1620 | /* bad parent */ | |
1621 | return -EINVAL; | |
1622 | } | |
1623 | ||
1624 | MkObjResult fhr = fs->mkdir(parent, name, st, mask, flags); | |
1625 | RGWFileHandle *nfh = get<0>(fhr); // nullptr if !success | |
1626 | ||
1627 | if (nfh) | |
1628 | *fh = nfh->get_fh(); | |
1629 | ||
1630 | return get<1>(fhr); | |
1631 | } /* rgw_mkdir */ | |
1632 | ||
1633 | /* | |
1634 | rename object | |
1635 | */ | |
1636 | int rgw_rename(struct rgw_fs *rgw_fs, | |
1637 | struct rgw_file_handle *src, const char* src_name, | |
1638 | struct rgw_file_handle *dst, const char* dst_name, | |
1639 | uint32_t flags) | |
1640 | { | |
1641 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1642 | ||
1643 | RGWFileHandle* src_fh = get_rgwfh(src); | |
1644 | RGWFileHandle* dst_fh = get_rgwfh(dst); | |
1645 | ||
1646 | return fs->rename(src_fh, dst_fh, src_name, dst_name); | |
1647 | } | |
1648 | ||
1649 | /* | |
1650 | remove file or directory | |
1651 | */ | |
1652 | int rgw_unlink(struct rgw_fs *rgw_fs, struct rgw_file_handle *parent_fh, | |
1653 | const char *name, uint32_t flags) | |
1654 | { | |
1655 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1656 | RGWFileHandle* parent = get_rgwfh(parent_fh); | |
1657 | ||
1658 | return fs->unlink(parent, name); | |
1659 | } | |
1660 | ||
1661 | /* | |
1662 | lookup object by name (POSIX style) | |
1663 | */ | |
1664 | int rgw_lookup(struct rgw_fs *rgw_fs, | |
1665 | struct rgw_file_handle *parent_fh, const char* path, | |
1666 | struct rgw_file_handle **fh, uint32_t flags) | |
1667 | { | |
1668 | //CephContext* cct = static_cast<CephContext*>(rgw_fs->rgw); | |
1669 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1670 | ||
1671 | RGWFileHandle* parent = get_rgwfh(parent_fh); | |
1672 | if ((! parent) || | |
1673 | (! parent->is_dir())) { | |
1674 | /* bad parent */ | |
1675 | return -EINVAL; | |
1676 | } | |
1677 | ||
1678 | RGWFileHandle* rgw_fh; | |
1679 | LookupFHResult fhr; | |
1680 | ||
1681 | if (parent->is_root()) { | |
1682 | /* special: parent lookup--note lack of ref()! */ | |
1683 | if (unlikely((strcmp(path, "..") == 0) || | |
1684 | (strcmp(path, "/") == 0))) { | |
1685 | rgw_fh = parent; | |
1686 | } else { | |
1687 | RGWLibFS::BucketStats bstat; | |
1688 | fhr = fs->stat_bucket(parent, path, bstat, RGWFileHandle::FLAG_NONE); | |
1689 | rgw_fh = get<0>(fhr); | |
1690 | if (! rgw_fh) | |
1691 | return -ENOENT; | |
1692 | } | |
1693 | } else { | |
1694 | /* special: after readdir--note extra ref()! */ | |
1695 | if (unlikely((strcmp(path, "..") == 0))) { | |
1696 | rgw_fh = parent; | |
1697 | lsubdout(fs->get_context(), rgw, 17) | |
1698 | << __func__ << "BANG"<< *rgw_fh | |
1699 | << dendl; | |
1700 | fs->ref(rgw_fh); | |
1701 | } else { | |
1702 | /* lookup in a readdir callback */ | |
1703 | enum rgw_fh_type fh_type = fh_type_of(flags); | |
1704 | ||
1705 | uint32_t sl_flags = (flags & RGW_LOOKUP_FLAG_RCB) | |
1706 | ? RGWFileHandle::FLAG_NONE | |
1707 | : RGWFileHandle::FLAG_EXACT_MATCH; | |
1708 | ||
1709 | fhr = fs->stat_leaf(parent, path, fh_type, sl_flags); | |
1710 | if (! get<0>(fhr)) { | |
1711 | if (! (flags & RGW_LOOKUP_FLAG_CREATE)) | |
1712 | return -ENOENT; | |
1713 | else | |
1714 | fhr = fs->lookup_fh(parent, path, RGWFileHandle::FLAG_CREATE); | |
1715 | } | |
1716 | rgw_fh = get<0>(fhr); | |
1717 | } | |
1718 | } /* !root */ | |
1719 | ||
1720 | struct rgw_file_handle *rfh = rgw_fh->get_fh(); | |
1721 | *fh = rfh; | |
1722 | ||
1723 | return 0; | |
1724 | } /* rgw_lookup */ | |
1725 | ||
1726 | /* | |
1727 | lookup object by handle (NFS style) | |
1728 | */ | |
1729 | int rgw_lookup_handle(struct rgw_fs *rgw_fs, struct rgw_fh_hk *fh_hk, | |
1730 | struct rgw_file_handle **fh, uint32_t flags) | |
1731 | { | |
1732 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1733 | ||
1734 | RGWFileHandle* rgw_fh = fs->lookup_handle(*fh_hk); | |
1735 | if (! rgw_fh) { | |
1736 | /* not found */ | |
1737 | return -ENOENT; | |
1738 | } | |
1739 | ||
1740 | struct rgw_file_handle *rfh = rgw_fh->get_fh(); | |
1741 | *fh = rfh; | |
1742 | ||
1743 | return 0; | |
1744 | } | |
1745 | ||
1746 | /* | |
1747 | * release file handle | |
1748 | */ | |
1749 | int rgw_fh_rele(struct rgw_fs *rgw_fs, struct rgw_file_handle *fh, | |
1750 | uint32_t flags) | |
1751 | { | |
1752 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1753 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1754 | ||
1755 | lsubdout(fs->get_context(), rgw, 17) | |
1756 | << __func__ << " " << *rgw_fh | |
1757 | << dendl; | |
1758 | ||
1759 | fs->unref(rgw_fh); | |
1760 | return 0; | |
1761 | } | |
1762 | ||
1763 | /* | |
1764 | get unix attributes for object | |
1765 | */ | |
1766 | int rgw_getattr(struct rgw_fs *rgw_fs, | |
1767 | struct rgw_file_handle *fh, struct stat *st, uint32_t flags) | |
1768 | { | |
1769 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1770 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1771 | ||
1772 | return fs->getattr(rgw_fh, st); | |
1773 | } | |
1774 | ||
1775 | /* | |
1776 | set unix attributes for object | |
1777 | */ | |
1778 | int rgw_setattr(struct rgw_fs *rgw_fs, | |
1779 | struct rgw_file_handle *fh, struct stat *st, | |
1780 | uint32_t mask, uint32_t flags) | |
1781 | { | |
1782 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1783 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1784 | ||
1785 | return fs->setattr(rgw_fh, st, mask, flags); | |
1786 | } | |
1787 | ||
1788 | /* | |
1789 | truncate file | |
1790 | */ | |
1791 | int rgw_truncate(struct rgw_fs *rgw_fs, | |
1792 | struct rgw_file_handle *fh, uint64_t size, uint32_t flags) | |
1793 | { | |
1794 | return 0; | |
1795 | } | |
1796 | ||
1797 | /* | |
1798 | open file | |
1799 | */ | |
1800 | int rgw_open(struct rgw_fs *rgw_fs, | |
1801 | struct rgw_file_handle *fh, uint32_t posix_flags, uint32_t flags) | |
1802 | { | |
1803 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1804 | ||
1805 | /* XXX | |
1806 | * need to track specific opens--at least read opens and | |
1807 | * a write open; we need to know when a write open is returned, | |
1808 | * that closes a write transaction | |
1809 | * | |
1810 | * for now, we will support single-open only, it's preferable to | |
1811 | * anything we can otherwise do without access to the NFS state | |
1812 | */ | |
1813 | if (! rgw_fh->is_file()) | |
1814 | return -EISDIR; | |
1815 | ||
1816 | return rgw_fh->open(flags); | |
1817 | } | |
1818 | ||
1819 | /* | |
1820 | close file | |
1821 | */ | |
1822 | int rgw_close(struct rgw_fs *rgw_fs, | |
1823 | struct rgw_file_handle *fh, uint32_t flags) | |
1824 | { | |
1825 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1826 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1827 | int rc = rgw_fh->close(/* XXX */); | |
1828 | ||
1829 | if (flags & RGW_CLOSE_FLAG_RELE) | |
1830 | fs->unref(rgw_fh); | |
1831 | ||
1832 | return rc; | |
1833 | } | |
1834 | ||
1835 | int rgw_readdir(struct rgw_fs *rgw_fs, | |
1836 | struct rgw_file_handle *parent_fh, uint64_t *offset, | |
1837 | rgw_readdir_cb rcb, void *cb_arg, bool *eof, | |
1838 | uint32_t flags) | |
1839 | { | |
1840 | RGWFileHandle* parent = get_rgwfh(parent_fh); | |
1841 | if (! parent) { | |
1842 | /* bad parent */ | |
1843 | return -EINVAL; | |
1844 | } | |
1845 | int rc = parent->readdir(rcb, cb_arg, offset, eof, flags); | |
1846 | return rc; | |
1847 | } | |
1848 | ||
1849 | /* | |
1850 | read data from file | |
1851 | */ | |
1852 | int rgw_read(struct rgw_fs *rgw_fs, | |
1853 | struct rgw_file_handle *fh, uint64_t offset, | |
1854 | size_t length, size_t *bytes_read, void *buffer, | |
1855 | uint32_t flags) | |
1856 | { | |
1857 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1858 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1859 | ||
1860 | return fs->read(rgw_fh, offset, length, bytes_read, buffer, flags); | |
1861 | } | |
1862 | ||
1863 | /* | |
1864 | write data to file | |
1865 | */ | |
1866 | int rgw_write(struct rgw_fs *rgw_fs, | |
1867 | struct rgw_file_handle *fh, uint64_t offset, | |
1868 | size_t length, size_t *bytes_written, void *buffer, | |
1869 | uint32_t flags) | |
1870 | { | |
1871 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1872 | int rc; | |
1873 | ||
1874 | *bytes_written = 0; | |
1875 | ||
1876 | if (! rgw_fh->is_file()) | |
1877 | return -EISDIR; | |
1878 | ||
1879 | if (! rgw_fh->is_open()) | |
1880 | return -EPERM; | |
1881 | ||
1882 | rc = rgw_fh->write(offset, length, bytes_written, buffer); | |
1883 | ||
1884 | return rc; | |
1885 | } | |
1886 | ||
1887 | /* | |
1888 | read data from file (vector) | |
1889 | */ | |
1890 | class RGWReadV | |
1891 | { | |
1892 | buffer::list bl; | |
1893 | struct rgw_vio* vio; | |
1894 | ||
1895 | public: | |
1896 | RGWReadV(buffer::list& _bl, rgw_vio* _vio) : vio(_vio) { | |
1897 | bl.claim(_bl); | |
1898 | } | |
1899 | ||
1900 | struct rgw_vio* get_vio() { return vio; } | |
1901 | ||
1902 | const std::list<buffer::ptr>& buffers() { return bl.buffers(); } | |
1903 | ||
1904 | unsigned /* XXX */ length() { return bl.length(); } | |
1905 | ||
1906 | }; | |
1907 | ||
1908 | void rgw_readv_rele(struct rgw_uio *uio, uint32_t flags) | |
1909 | { | |
1910 | RGWReadV* rdv = static_cast<RGWReadV*>(uio->uio_p1); | |
1911 | rdv->~RGWReadV(); | |
1912 | ::operator delete(rdv); | |
1913 | } | |
1914 | ||
1915 | int rgw_readv(struct rgw_fs *rgw_fs, | |
1916 | struct rgw_file_handle *fh, rgw_uio *uio, uint32_t flags) | |
1917 | { | |
1918 | #if 0 /* XXX */ | |
1919 | CephContext* cct = static_cast<CephContext*>(rgw_fs->rgw); | |
1920 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1921 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1922 | ||
1923 | if (! rgw_fh->is_file()) | |
1924 | return -EINVAL; | |
1925 | ||
1926 | int rc = 0; | |
1927 | ||
1928 | buffer::list bl; | |
1929 | RGWGetObjRequest req(cct, fs->get_user(), rgw_fh->bucket_name(), | |
1930 | rgw_fh->object_name(), uio->uio_offset, uio->uio_resid, | |
1931 | bl); | |
1932 | req.do_hexdump = false; | |
1933 | ||
1934 | rc = rgwlib.get_fe()->execute_req(&req); | |
1935 | ||
1936 | if (! rc) { | |
1937 | RGWReadV* rdv = static_cast<RGWReadV*>( | |
1938 | ::operator new(sizeof(RGWReadV) + | |
1939 | (bl.buffers().size() * sizeof(struct rgw_vio)))); | |
1940 | ||
1941 | (void) new (rdv) | |
1942 | RGWReadV(bl, reinterpret_cast<rgw_vio*>(rdv+sizeof(RGWReadV))); | |
1943 | ||
1944 | uio->uio_p1 = rdv; | |
1945 | uio->uio_cnt = rdv->buffers().size(); | |
1946 | uio->uio_resid = rdv->length(); | |
1947 | uio->uio_vio = rdv->get_vio(); | |
1948 | uio->uio_rele = rgw_readv_rele; | |
1949 | ||
1950 | int ix = 0; | |
1951 | auto& buffers = rdv->buffers(); | |
1952 | for (auto& bp : buffers) { | |
1953 | rgw_vio *vio = &(uio->uio_vio[ix]); | |
1954 | vio->vio_base = const_cast<char*>(bp.c_str()); | |
1955 | vio->vio_len = bp.length(); | |
1956 | vio->vio_u1 = nullptr; | |
1957 | vio->vio_p1 = nullptr; | |
1958 | ++ix; | |
1959 | } | |
1960 | } | |
1961 | ||
1962 | return rc; | |
1963 | #else | |
1964 | return 0; | |
1965 | #endif | |
1966 | } | |
1967 | ||
1968 | /* | |
1969 | write data to file (vector) | |
1970 | */ | |
1971 | int rgw_writev(struct rgw_fs *rgw_fs, struct rgw_file_handle *fh, | |
1972 | rgw_uio *uio, uint32_t flags) | |
1973 | { | |
1974 | ||
1975 | return -ENOTSUP; | |
1976 | ||
1977 | CephContext* cct = static_cast<CephContext*>(rgw_fs->rgw); | |
1978 | RGWLibFS *fs = static_cast<RGWLibFS*>(rgw_fs->fs_private); | |
1979 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
1980 | ||
1981 | if (! rgw_fh->is_file()) | |
1982 | return -EINVAL; | |
1983 | ||
1984 | buffer::list bl; | |
1985 | for (unsigned int ix = 0; ix < uio->uio_cnt; ++ix) { | |
1986 | rgw_vio *vio = &(uio->uio_vio[ix]); | |
1987 | bl.push_back( | |
1988 | buffer::create_static(vio->vio_len, | |
1989 | static_cast<char*>(vio->vio_base))); | |
1990 | } | |
1991 | ||
1992 | std::string oname = rgw_fh->relative_object_name(); | |
1993 | RGWPutObjRequest req(cct, fs->get_user(), rgw_fh->bucket_name(), | |
1994 | oname, bl); | |
1995 | ||
1996 | int rc = rgwlib.get_fe()->execute_req(&req); | |
1997 | ||
1998 | /* XXX update size (in request) */ | |
1999 | ||
2000 | return rc; | |
2001 | } | |
2002 | ||
2003 | /* | |
2004 | sync written data | |
2005 | */ | |
2006 | int rgw_fsync(struct rgw_fs *rgw_fs, struct rgw_file_handle *handle, | |
2007 | uint32_t flags) | |
2008 | { | |
2009 | return 0; | |
2010 | } | |
2011 | ||
2012 | int rgw_commit(struct rgw_fs *rgw_fs, struct rgw_file_handle *fh, | |
2013 | uint64_t offset, uint64_t length, uint32_t flags) | |
2014 | { | |
2015 | RGWFileHandle* rgw_fh = get_rgwfh(fh); | |
2016 | ||
2017 | return rgw_fh->commit(offset, length, RGWFileHandle::FLAG_NONE); | |
2018 | } | |
2019 | ||
2020 | } /* extern "C" */ |