GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/catalog_mgr_client.cc
Date: 2026-08-23 02:40:52
Exec Total Coverage
Lines: 212 233 91.0%
Branches: 179 311 57.6%
Line Branch Exec Source
1 /**
2 * This file is part of the CernVM file system.
3 */
4
5
6 #include "catalog_mgr_client.h"
7
8 #include <string>
9 #include <vector>
10
11 #include "cache_posix.h"
12 #include "crypto/signature.h"
13 #include "fetch.h"
14 #include "manifest.h"
15 #include "mountpoint.h"
16 #include "quota.h"
17 #include "statistics.h"
18 #include "util/posix.h" // IWYU pragma: keep
19 #include "util/string.h"
20
21 using namespace std; // NOLINT
22
23 namespace catalog {
24
25 /**
26 * Triggered when the catalog is attached (db file opened)
27 */
28 624 void ClientCatalogManager::ActivateCatalog(Catalog *catalog) {
29 const Counters &counters = const_cast<const Catalog *>(catalog)
30 624 ->GetCounters();
31
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 624 if (catalog->IsRoot()) {
32 538 all_inodes_ = counters.GetAllEntries();
33 }
34 624 loaded_inodes_ += counters.GetSelfEntries();
35 624 }
36
37
38 916 ClientCatalogManager::ClientCatalogManager(MountPoint *mountpoint)
39 : AbstractCatalogManager<Catalog>(mountpoint->statistics())
40
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 916 , repo_name_(mountpoint->fqrn())
41 916 , fetcher_(mountpoint->fetcher())
42 916 , signature_mgr_(mountpoint->signature_mgr())
43
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 916 , workspace_(mountpoint->file_system()->workspace())
44 916 , offline_mode_(false)
45 916 , all_inodes_(0)
46 916 , loaded_inodes_(0)
47
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 916 , fixed_root_catalog_()
48 916 , fixed_alt_root_catalog_(false)
49
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 1832 , root_fd_(-1) {
50
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 916 LogCvmfs(kLogCatalog, kLogDebug, "constructing client catalog manager");
51
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 916 n_certificate_hits_ = mountpoint->statistics()->Register(
52 "cache.n_certificate_hits", "Number of certificate hits");
53
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 916 n_certificate_misses_ = mountpoint->statistics()->Register(
54 "cache.n_certificate_misses", "Number of certificate misses");
55 916 }
56
57
58 3280 ClientCatalogManager::~ClientCatalogManager() {
59 1832 LogCvmfs(kLogCache, kLogDebug, "unpinning / unloading all catalogs");
60
61 3664 for (map<PathString, shash::Any>::iterator i = mounted_catalogs_.begin(),
62 1832 iend = mounted_catalogs_.end();
63
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 3076 i != iend;
64 1244 ++i) {
65 1244 fetcher_->cache_mgr()->quota_mgr()->Unpin(i->second);
66 }
67 3280 }
68
69
70 624 Catalog *ClientCatalogManager::CreateCatalog(const PathString &mountpoint,
71 const shash::Any &catalog_hash,
72 catalog::Catalog *parent_catalog) {
73 624 mounted_catalogs_[mountpoint] = loaded_catalogs_[mountpoint];
74 624 loaded_catalogs_.erase(mountpoint);
75
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 624 return new Catalog(mountpoint, catalog_hash, parent_catalog);
76 }
77
78
79 140 shash::Any ClientCatalogManager::GetRootHash() {
80 140 ReadLock();
81
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 140 shash::Any result = mounted_catalogs_[PathString("", 0)];
82 140 Unlock();
83 140 return result;
84 }
85
86
87 /**
88 * Specialized initialization that uses a fixed root hash.
89 *
90 * @returns true - root catalog was successfully mounted
91 * false - otherwise
92 */
93 346 bool ClientCatalogManager::InitFixed(const shash::Any &root_hash,
94 bool alternative_path) {
95
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 346 LogCvmfs(kLogCatalog, kLogDebug, "Initialize catalog with fixed root hash %s",
96 692 root_hash.ToString().c_str());
97 346 WriteLock();
98 346 fixed_alt_root_catalog_ = alternative_path;
99 346 fixed_root_catalog_ = root_hash;
100
101
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 346 const bool attached = MountCatalog(PathString("", 0), root_hash, NULL);
102 346 Unlock();
103
104
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 346 if (!attached) {
105 ✗ LogCvmfs(kLogCatalog, kLogDebug, "failed to initialize fixed root catalog");
106 }
107
108 346 return attached;
109 }
110
111 /**
112 * Gets information about the most recent root catalog, including even if it is
113 * a fixed root catalog. This is needed as Remount() does not know what kind of
114 * root catalog will be remounted.
115 *
116 * Checks the locations: mounted, alien cache and remote (server) and sets the
117 * fields of variable "result". For the most recent catalog the location, hash
118 * and revision number are set.
119 *
120 *
121 * @param [out] result All fields but sqlite_path will be set:
122 * mountpoint, root_ctl_location, root_ctlg_revision, hash
123 * @return kLoadUp2Date - if most recent root catalog is already mounted
124 * kLoadNew - otherwise
125 */
126 356 LoadReturn ClientCatalogManager::GetNewRootCatalogContext(
127 CatalogContext *result) {
128
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 356 result->SetMountpoint(PathString("", 0));
129
130 // quick escape if we have a fixed catalog
131
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 356 if (!fixed_root_catalog_.IsNull()) {
132 ✗ result->SetHash(fixed_root_catalog_);
133 ✗ result->SetRootCtlgRevision(GetRevisionNoLock());
134
135 // it might or might not be already mounted, but we do not care
136 // as we do no need to download and save the manifest
137 // (see LoadCatalogByHash()) as such we must set the location to this
138 ✗ result->SetRootCtlgLocation(kCtlgLocationMounted);
139 ✗ offline_mode_ = false;
140
141 // we can do this here as the very first time fixed catalog is loaded it
142 // call directly MountCatalog() and will skip the call to this function
143 // here
144 ✗ return catalog::kLoadUp2Date;
145 }
146
147 // 1) Get alien cache root catalog (local)
148
149 // Happens only on init/remount, i.e. quota won't delete a cached catalog
150
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 356 shash::Any local_newest_hash(shash::kSha1, shash::kSuffixCatalog);
151
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 356 shash::Any mounted_hash(shash::kSha1, shash::kSuffixCatalog);
152 356 uint64_t local_newest_timestamp = 0;
153 356 uint64_t local_newest_revision = manifest::Breadcrumb::kInvalidRevision;
154
155 356 const manifest::Breadcrumb breadcrumb = fetcher_->cache_mgr()->LoadBreadcrumb(
156
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 356 repo_name_);
157
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 356 if (breadcrumb.IsValid()) {
158 74 local_newest_hash = breadcrumb.catalog_hash;
159 74 local_newest_timestamp = breadcrumb.timestamp;
160 74 local_newest_revision = breadcrumb.revision;
161
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 148 LogCvmfs(kLogCache, kLogDebug,
162 "Cached copy publish date %s (hash %s, revision %" PRIu64 ")",
163
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 148 StringifyTime(static_cast<int64_t>(local_newest_timestamp), true)
164 .c_str(),
165
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 148 local_newest_hash.ToString().c_str(), breadcrumb.revision);
166 } else {
167
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 282 LogCvmfs(kLogCache, kLogDebug, "Unable to read local checksum %s",
168
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 564 breadcrumb.ToString().c_str());
169 }
170
171 // 2) Select local newest catalog: mounted vs alien
172
173 356 result->SetRootCtlgLocation(kCtlgLocationBreadcrumb);
174 356 LoadReturn success_code = catalog::kLoadNew;
175
176
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 356 if (mounted_catalogs_.size() > 0) {
177 const std::map<PathString, shash::Any>::iterator
178
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 50 curr_hash_itr = mounted_catalogs_.find(PathString("", 0));
179 50 mounted_hash = curr_hash_itr->second;
180 }
181
182 // We only look for currently loaded catalog if the revision is newer than
183 // the breadcrumb revision and both revision numbers are valid (!= -1ul).
184 356 if ((local_newest_revision <= GetRevisionNoLock()
185
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 282 || local_newest_revision == manifest::Breadcrumb::kInvalidRevision)
186
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 638 && mounted_catalogs_.size() > 0) {
187 50 local_newest_hash = mounted_hash;
188 50 local_newest_revision = GetRevisionNoLock();
189 // if needed for integration test 707: breadcrumb_timestamp_newer()
190 50 local_newest_timestamp = GetTimestampNoLock() > local_newest_timestamp
191
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 50 ? GetTimestampNoLock()
192 : local_newest_timestamp;
193 50 result->SetRootCtlgLocation(kCtlgLocationMounted);
194 50 success_code = catalog::kLoadUp2Date;
195
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 306 } else if (local_newest_revision == 0 && mounted_catalogs_.size() > 0) {
196 // breadcrumb has no revision
197 // TODO(heretherebedragons) this branch can be removed in future versions
198
199 // revisions are better, but if we dont have any we need to compare by
200 // timestamp (you can have multiple revisions in the same timestamp)
201 ✗ if (local_newest_timestamp < GetTimestampNoLock()) {
202 ✗ local_newest_hash = mounted_hash;
203 ✗ local_newest_revision = GetRevisionNoLock();
204 ✗ local_newest_timestamp = GetTimestampNoLock();
205 ✗ result->SetRootCtlgLocation(kCtlgLocationMounted);
206 ✗ success_code = catalog::kLoadUp2Date;
207 }
208 }
209
210 // 3) Get remote root catalog (fails if remote catalog is older)
211 manifest::Failures manifest_failure;
212 std::unique_ptr<CachedManifestEnsemble> ensemble(
213
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 356 new CachedManifestEnsemble(fetcher_->cache_mgr(), this));
214
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 356 manifest_failure = manifest::Fetch("", repo_name_, local_newest_timestamp,
215 &local_newest_hash, signature_mgr_,
216 356 fetcher_->download_mgr(), ensemble.get());
217
218
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 356 if (manifest_failure == manifest::kFailOk) {
219 // server has newest revision or no valid local revision
220 217 if (ensemble->manifest->revision() > local_newest_revision
221
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 215 || local_newest_revision == manifest::Breadcrumb::kInvalidRevision
222 // if revision is 0 both local and server, load catalog from server
223 // as local is most likely just "initialized" without valid value
224
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 458 || (ensemble->manifest->revision() == 0
225
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 26 && local_newest_revision == 0)) {
226 194 result->SetHash(ensemble->manifest->catalog_hash());
227 194 result->SetRootCtlgRevision(ensemble->manifest->revision());
228 194 result->SetRootCtlgLocation(kCtlgLocationServer);
229 194 fixed_alt_root_catalog_ = ensemble->manifest->has_alt_catalog_path();
230
231 194 result->TakeManifestEnsemble(
232 194 static_cast<manifest::ManifestEnsemble *>(ensemble.release()));
233 194 offline_mode_ = false;
234
235 194 return catalog::kLoadNew;
236 }
237 }
238
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 162 LogCvmfs(kLogCache, kLogDebug,
239 "Failed fetch manifest from server: "
240 "manifest too old or server unreachable (%d - %s)",
241 manifest_failure, manifest::Code2Ascii(manifest_failure));
242
243 // total failure: server not reachable and no valid local hash
244
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 162 if ((manifest_failure != manifest::kFailOk) && local_newest_hash.IsNull()) {
245
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 116 LogCvmfs(kLogCache, kLogDebug, "No valid root catalog found!");
246 116 return catalog::kLoadFail;
247 }
248
249 46 if (manifest_failure == manifest::kFailOk
250
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 46 && ensemble->manifest->revision() == local_newest_revision) {
251 23 offline_mode_ = false;
252 } else {
253 23 offline_mode_ = true;
254 }
255 46 result->SetHash(local_newest_hash);
256 46 result->SetRootCtlgRevision(local_newest_revision);
257
258 // for integration test 707: breadcrumb_revision_large()
259
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 46 if (breadcrumb.IsValid() && breadcrumb.catalog_hash == mounted_hash) {
260 46 success_code = catalog::kLoadUp2Date;
261 }
262
263 46 return success_code;
264 356 }
265
266 851 std::string ClientCatalogManager::GetCatalogDescription(
267 const PathString &mountpoint, const shash::Any &hash) {
268
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 1702 return "file catalog at " + repo_name_ + ":"
269
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 2553 + (mountpoint.IsEmpty()
270
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 1969 ? "/"
271 267 : string(mountpoint.GetChars(), mountpoint.GetLength()))
272
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 3404 + " (" + hash.ToString() + ")";
273 }
274
275 /**
276 * Loads (and fetches) a catalog by hash for a given mountpoint.
277 *
278 * Special case for root catalog: ctlg_context->root_ctlg_location must be
279 * given.
280 *
281 * @param [in, out] ctlg_context mandatory fields (input): mountpoint, hash
282 * additional mandatory fields for root catalog: root_ctlg_location
283 * output: sqlite_path is set if catalog fetch successful
284 * @return kLoadUp2Date for root catalog that is already mounted
285 * kLoadNew for any other successful load
286 * kLoadFail on failure
287 */
288 808 LoadReturn ClientCatalogManager::LoadCatalogByHash(
289 CatalogContext *ctlg_context) {
290
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 808 const string catalog_descr = GetCatalogDescription(ctlg_context->mountpoint(),
291
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 1616 ctlg_context->hash());
292
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 808 string alt_root_catalog_path = "";
293
294 // root catalog needs special handling because of alt_root_catalog_path
295
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 808 if (ctlg_context->IsRootCatalog() && fixed_alt_root_catalog_) {
296 ✗ alt_root_catalog_path = ctlg_context->hash().MakeAlternativePath();
297 }
298
299
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 1616 const LoadReturn load_ret = FetchCatalogByHash(
300 808 ctlg_context->hash(), catalog_descr, alt_root_catalog_path,
301 ctlg_context->GetSqlitePathPtr());
302
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 808 if (load_ret == catalog::kLoadNew) {
303
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 785 loaded_catalogs_[ctlg_context->mountpoint()] = ctlg_context->hash();
304
305
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 785 if (ctlg_context->IsRootCatalog()) {
306
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 584 if (ctlg_context->root_ctlg_location() == kCtlgLocationMounted) {
307 392 return kLoadUp2Date;
308 }
309
310 // if coming from server: update breadcrumb
311
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 192 if (ctlg_context->root_ctlg_location() == kCtlgLocationServer) {
312 // Keep a copy of the manifest, it backs the repo_metainfo xattr
313 192 manifest_.reset(new manifest::Manifest(
314
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 192 *ctlg_context->manifest_ensemble()->manifest));
315
316 // Store new manifest and certificate
317 192 CacheManager::Label label;
318
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 192 label.path = repo_name_;
319 192 label.flags |= CacheManager::kLabelCertificate;
320
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 192 if (ctlg_context->manifest_ensemble()->cert_size > 0) {
321
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 334 fetcher_->cache_mgr()->CommitFromMem(
322
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 334 CacheManager::LabeledObject(
323 334 ctlg_context->manifest_ensemble()->manifest->certificate(),
324 label),
325 167 ctlg_context->manifest_ensemble()->cert_buf,
326 167 ctlg_context->manifest_ensemble()->cert_size);
327 }
328 192 fetcher_->cache_mgr()->StoreBreadcrumb(
329
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 192 *ctlg_context->manifest_ensemble()->manifest);
330 192 }
331 }
332 }
333
334 416 return load_ret;
335 808 }
336
337 /**
338 * Fetch a catalog by hash either from cache or from remote.
339 * Successful load always returns kLoadNew (independent of the location) and
340 * sets the sqlite_path variable.
341 *
342 * @param [out] sqlite_path of the catalog if successfully fetched
343 * @return kLoadNew on success
344 * kLoadNoSpace out of space, no room on the device to open the catalog
345 * kLoadFail on all other failures
346 */
347 808 LoadReturn ClientCatalogManager::FetchCatalogByHash(
348 const shash::Any &hash,
349 const string &name,
350 const std::string &alt_root_catalog_path,
351 std::string *sqlite_path) {
352
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 808 assert(hash.suffix == shash::kSuffixCatalog);
353 808 CacheManager::Label label;
354
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 808 label.path = name;
355 808 label.flags = CacheManager::kLabelCatalog;
356
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 808 const int fd = fetcher_->Fetch(CacheManager::LabeledObject(hash, label),
357 alt_root_catalog_path);
358
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 808 if (fd >= 0) {
359
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 785 if (root_fd_ < 0) {
360 536 root_fd_ = fd;
361 }
362
363
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 785 LogCvmfs(kLogCatalog, kLogDebug, "FetchCatalogByHash filedescriptor %d",
364 fd);
365
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 785 *sqlite_path = "@" + StringifyInt(fd);
366 785 return kLoadNew;
367 }
368
369
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 23 if (fd == -ENOSPC)
370 ✗ return kLoadNoSpace;
371
372 23 return kLoadFail;
373 808 }
374
375 43 void ClientCatalogManager::StageNestedCatalogByHash(
376 const shash::Any &hash, const PathString &mountpoint) {
377
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 43 assert(hash.suffix == shash::kSuffixCatalog);
378
379 43 CacheManager::Label label;
380
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 43 label.path = GetCatalogDescription(mountpoint, hash);
381 43 label.flags = CacheManager::kLabelCatalog;
382
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 43 const int fd = fetcher_->Fetch(CacheManager::LabeledObject(hash, label));
383
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 43 if (fd >= 0)
384
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 43 fetcher_->cache_mgr()->Close(fd);
385 43 }
386
387 2 void ClientCatalogManager::UnloadCatalog(const Catalog *catalog) {
388
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 2 LogCvmfs(kLogCache, kLogDebug, "unloading catalog %s",
389
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 4 catalog->mountpoint().c_str());
390
391
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 2 const map<PathString, shash::Any>::iterator iter = mounted_catalogs_.find(
392
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 4 catalog->mountpoint());
393
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 2 assert(iter != mounted_catalogs_.end());
394
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 2 fetcher_->cache_mgr()->quota_mgr()->Unpin(iter->second);
395
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 2 mounted_catalogs_.erase(iter);
396 2 const catalog::Counters &counters = catalog->GetCounters();
397
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 2 loaded_inodes_ -= counters.GetSelfEntries();
398 2 }
399
400
401 /**
402 * Checks if the current repository revision is blacklisted. The format
403 * of the blacklist lines is '<REPO N' where REPO is the repository name,
404 * N is the revision number, and the two parts are separated by whitespace.
405 * Any revision of REPO less than N is blacklisted.
406 * Note: no extra characters are allowed after N, not even whitespace.
407 * @return true if it is blacklisted, false otherwise
408 */
409 536 bool ClientCatalogManager::IsRevisionBlacklisted() {
410 536 const uint64_t revision = GetRevision();
411
412
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 536 LogCvmfs(kLogCache, kLogDebug,
413 "checking if %s revision %" PRIu64 " is blacklisted",
414 repo_name_.c_str(), revision);
415
416
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 536 vector<string> blacklist = signature_mgr_->GetBlacklist();
417
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 536 for (unsigned i = 0; i < blacklist.size(); ++i) {
418
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 24 std::string line = blacklist[i];
419
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 24 if (line[0] != '<')
420 ✗ continue;
421 24 unsigned idx = repo_name_.length() + 1;
422
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 24 if (line.length() <= idx)
423 ✗ continue;
424
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 24 if ((line[idx] != ' ') && (line[idx] != '\t'))
425 ✗ continue;
426
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 24 if (line.substr(1, idx - 1) != repo_name_)
427 ✗ continue;
428 24 ++idx;
429
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 24 while ((line[idx] == ' ') || (line[idx] == '\t'))
430 ✗ ++idx;
431
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 24 if (idx >= line.length())
432 ✗ continue;
433 uint64_t rev;
434
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 24 if (!String2Uint64Parse(line.substr(idx), &rev))
435 ✗ continue;
436
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 24 if (revision < rev)
437 24 return true;
438
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 24 }
439
440 512 return false;
441 536 }
442
443
444 //------------------------------------------------------------------------------
445
446
447 216 void CachedManifestEnsemble::FetchCertificate(const shash::Any &hash) {
448 216 CacheManager::Label label;
449 216 label.flags |= CacheManager::kLabelCertificate;
450
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 216 label.path = catalog_mgr_->repo_name();
451 uint64_t size;
452
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 216 const bool retval = cache_mgr_->Open2Mem(
453
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 432 CacheManager::LabeledObject(hash, label), &cert_buf, &size);
454 216 cert_size = size;
455
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 216 if (retval)
456 2 perf::Inc(catalog_mgr_->n_certificate_hits_);
457 else
458 214 perf::Inc(catalog_mgr_->n_certificate_misses_);
459 216 }
460
461 } // namespace catalog
462