GCC Code Coverage Report


Directory: cvmfs/
File: cvmfs/catalog.cc
Date: 2025-11-16 02:35:16
Exec Total Coverage
Lines: 407 439 92.7%
Branches: 324 606 53.5%

Line Branch Exec Source
1 /**
2 * This file is part of the CernVM File System.
3 */
4
5 #include "catalog.h"
6
7 #include <alloca.h>
8 #include <errno.h>
9
10 #include <algorithm>
11 #include <cassert>
12
13 #include "catalog_mgr.h"
14 #include "util/concurrency.h"
15 #include "util/logging.h"
16 #include "util/platform.h"
17 #include "util/smalloc.h"
18
19 using namespace std; // NOLINT
20
21 namespace catalog {
22
23 const shash::Md5 Catalog::kMd5PathEmpty("", 0);
24
25
26 /**
27 * Open a catalog outside the framework of a catalog manager.
28 */
29 620 Catalog *Catalog::AttachFreely(const string &imaginary_mountpoint,
30 const string &file,
31 const shash::Any &catalog_hash,
32 Catalog *parent,
33 const bool is_nested) {
34 Catalog *catalog = new Catalog(
35 620 PathString(imaginary_mountpoint.data(), imaginary_mountpoint.length()),
36 catalog_hash,
37 parent,
38
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620 is_nested);
39 620 const bool successful_init = catalog->InitStandalone(file);
40
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620 if (!successful_init) {
41
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47 delete catalog;
42 47 return NULL;
43 }
44 573 return catalog;
45 }
46
47
48 5313 Catalog::Catalog(const PathString &mountpoint,
49 const shash::Any &catalog_hash,
50 Catalog *parent,
51 5313 const bool is_nested)
52 5313 : catalog_hash_(catalog_hash)
53
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5313 , mountpoint_(mountpoint)
54
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5313 , is_regular_mountpoint_(mountpoint_ == root_prefix_)
55 5313 , volatile_flag_(false)
56
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5313 , is_root_(parent == NULL && !is_nested)
57 5313 , managed_database_(false)
58 5313 , parent_(parent)
59 5313 , nested_catalog_cache_dirty_(true)
60 5313 , voms_authz_status_(kVomsUnknown)
61
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10626 , initialized_(false) {
62 5313 max_row_id_ = 0;
63 5313 inode_annotation_ = NULL;
64 5313 lock_ = reinterpret_cast<pthread_mutex_t *>(smalloc(sizeof(pthread_mutex_t)));
65 5313 const int retval = pthread_mutex_init(lock_, NULL);
66
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5313 assert(retval == 0);
67
68 5313 database_ = NULL;
69 5313 uid_map_ = NULL;
70 5313 gid_map_ = NULL;
71 5313 sql_listing_ = NULL;
72 5313 sql_lookup_md5path_ = NULL;
73 5313 sql_lookup_nested_ = NULL;
74 5313 sql_list_nested_ = NULL;
75 5313 sql_own_list_nested_ = NULL;
76 5313 sql_all_chunks_ = NULL;
77 5313 sql_chunks_listing_ = NULL;
78 5313 sql_lookup_xattrs_ = NULL;
79 5313 }
80
81
82 14556 Catalog::~Catalog() {
83 10424 pthread_mutex_destroy(lock_);
84 10424 free(lock_);
85 10424 FinalizePreparedStatements();
86
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10424 delete database_;
87 14556 }
88
89
90 /**
91 * InitPreparedStatement uses polymorphism in case of a r/w catalog.
92 * FinalizePreparedStatements is called in the destructor where
93 * polymorphism does not work any more and has to be called both in
94 * the WritableCatalog and the Catalog destructor
95 */
96 4929 void Catalog::InitPreparedStatements() {
97
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4929 sql_listing_ = new SqlListing(database());
98
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4929 sql_lookup_md5path_ = new SqlLookupPathHash(database());
99
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4929 sql_lookup_nested_ = new SqlNestedCatalogLookup(database());
100
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4929 sql_list_nested_ = new SqlNestedCatalogListing(database());
101
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4929 sql_own_list_nested_ = new SqlOwnNestedCatalogListing(database());
102
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4929 sql_all_chunks_ = new SqlAllChunks(database());
103
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4929 sql_chunks_listing_ = new SqlChunksListing(database());
104
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4929 sql_lookup_xattrs_ = new SqlLookupXattrs(database());
105 4929 }
106
107
108 5212 void Catalog::FinalizePreparedStatements() {
109
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5212 delete sql_lookup_xattrs_;
110
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5212 delete sql_chunks_listing_;
111
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5212 delete sql_all_chunks_;
112
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5212 delete sql_listing_;
113
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5212 delete sql_lookup_md5path_;
114
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5212 delete sql_lookup_nested_;
115
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5212 delete sql_list_nested_;
116
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5212 delete sql_own_list_nested_;
117 5212 }
118
119
120 1684 bool Catalog::InitStandalone(const std::string &database_file) {
121
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1684 const bool retval = OpenDatabase(database_file);
122
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1684 if (!retval) {
123 47 return false;
124 }
125
126 1637 InodeRange inode_range;
127 1637 inode_range.MakeDummy();
128 1637 set_inode_range(inode_range);
129 1637 return true;
130 }
131
132
133 6993 bool Catalog::ReadCatalogCounters() {
134
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6993 assert(database_ != NULL);
135 bool statistics_loaded;
136 6993 if (database().schema_version() < CatalogDatabase::kLatestSupportedSchema
137
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6993 - CatalogDatabase::kSchemaEpsilon) {
138 96 statistics_loaded = counters_.ReadFromDatabase(database(),
139 LegacyMode::kLegacy);
140
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6897 } else if (database().schema_revision() < 2) {
141 statistics_loaded = counters_.ReadFromDatabase(database(),
142 LegacyMode::kNoXattrs);
143
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6897 } else if (database().schema_revision() < 3) {
144 statistics_loaded = counters_.ReadFromDatabase(database(),
145 LegacyMode::kNoExternals);
146
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6897 } else if (database().schema_revision() < 5) {
147 statistics_loaded = counters_.ReadFromDatabase(database(),
148 LegacyMode::kNoSpecials);
149 } else {
150 6897 statistics_loaded = counters_.ReadFromDatabase(database());
151 }
152 6993 return statistics_loaded;
153 }
154
155
156 /**
157 * Establishes the database structures and opens the sqlite database file.
158 * @param db_path the absolute path to the database file on local file system
159 * @return true on successful initialization otherwise false
160 */
161 5025 bool Catalog::OpenDatabase(const string &db_path) {
162
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5025 database_ = CatalogDatabase::Open(db_path, DatabaseOpenMode());
163
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5025 if (NULL == database_) {
164 96 return false;
165 }
166
167
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4929 if (database_->IsEqualSchema(database_->schema_version(), 1.0)) {
168 // Possible fix-up for database layout lacking the content hash of
169 // nested catalogs
170 SqlCatalog sql_has_nested_sha1(
171 96 database(),
172 "SELECT count(*) FROM sqlite_master "
173
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288 "WHERE type='table' AND name='nested_catalogs' AND sql LIKE '%sha1%';");
174
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96 const bool retval = sql_has_nested_sha1.FetchRow();
175
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96 assert(retval == true);
176
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96 const bool has_nested_sha1 = sql_has_nested_sha1.RetrieveInt64(0);
177
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96 if (!has_nested_sha1) {
178 49 database_->EnforceSchema(0.9, 0);
179 }
180 96 }
181
182
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4929 InitPreparedStatements();
183
184 // Set the database file ownership if requested
185
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4929 if (managed_database_) {
186
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284 database_->TakeFileOwnership();
187 }
188
189 // Find out the maximum row id of this database file
190
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9858 SqlCatalog sql_max_row_id(database(), "SELECT MAX(rowid) FROM catalog;");
191
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4929 if (!sql_max_row_id.FetchRow()) {
192 LogCvmfs(kLogCatalog, kLogDebug,
193 "Cannot retrieve maximal row id for database file %s "
194 "(SqliteErrorcode: %d)",
195 db_path.c_str(), sql_max_row_id.GetLastError());
196 return false;
197 }
198
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4929 max_row_id_ = sql_max_row_id.RetrieveInt64(0);
199
200 // Get root prefix
201
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4929 if (database_->HasProperty("root_prefix")) {
202 1584 const std::string root_prefix = database_->GetProperty<std::string>(
203
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3168 "root_prefix");
204
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1584 root_prefix_.Assign(root_prefix.data(), root_prefix.size());
205
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1584 LogCvmfs(kLogCatalog, kLogDebug,
206 "found root prefix %s in root catalog file %s",
207 root_prefix_.c_str(), db_path.c_str());
208
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1584 is_regular_mountpoint_ = (root_prefix_ == mountpoint_);
209 1584 } else {
210
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3345 LogCvmfs(kLogCatalog, kLogDebug, "no root prefix for root catalog file %s",
211 db_path.c_str());
212 }
213
214 // Get volatile content flag
215
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4929 volatile_flag_ = database_->GetPropertyDefault<bool>("volatile",
216 4929 volatile_flag_);
217
218 // Read Catalog Counter Statistics
219
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4929 if (!ReadCatalogCounters()) {
220 LogCvmfs(kLogCatalog, kLogStderr,
221 "failed to load statistics counters for catalog %s (file %s)",
222 mountpoint_.c_str(), db_path.c_str());
223 return false;
224 }
225
226
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4929 if (HasParent()) {
227
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1551 parent_->AddChild(this);
228 }
229
230 4929 initialized_ = true;
231 4929 return true;
232 4929 }
233
234
235 /**
236 * Removes the mountpoint and prepends the root prefix to path
237 */
238 17584 shash::Md5 Catalog::NormalizePath(const PathString &path) const {
239
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17584 if (is_regular_mountpoint_)
240
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17384 return shash::Md5(path.GetChars(), path.GetLength());
241
242
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200 assert(path.GetLength() >= mountpoint_.GetLength());
243 // Piecewise hash calculation: root_prefix plus tail of path
244
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200 shash::Any result(shash::kMd5);
245
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200 shash::ContextPtr ctx(shash::kMd5);
246 200 ctx.buffer = alloca(ctx.size);
247
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200 shash::Init(ctx);
248
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400 shash::Update(
249 200 reinterpret_cast<const unsigned char *>(root_prefix_.GetChars()),
250 root_prefix_.GetLength(),
251 ctx);
252 200 shash::Update(reinterpret_cast<const unsigned char *>(path.GetChars())
253
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200 + mountpoint_.GetLength(),
254 200 path.GetLength() - mountpoint_.GetLength(),
255 ctx);
256
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200 shash::Final(ctx, &result);
257
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200 return result.CastToMd5();
258 }
259
260
261 /**
262 * Same as NormalizePath but returns a PathString instead of an Md5 hash.
263 */
264 1493 PathString Catalog::NormalizePath2(const PathString &path) const {
265
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1493 if (is_regular_mountpoint_)
266
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1305 return path;
267
268
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188 assert(path.GetLength() >= mountpoint_.GetLength());
269
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188 PathString result = root_prefix_;
270
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188 const PathString suffix = path.Suffix(mountpoint_.GetLength());
271
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188 result.Append(suffix.GetChars(), suffix.GetLength());
272
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188 return result;
273 188 }
274
275
276 /**
277 * The opposite of NormalizePath: from a full path remove the root prefix and
278 * add the catalogs current mountpoint. Needed for normalized paths from the
279 * SQlite tables, such as nested catalog entry points.
280 */
281 1494 PathString Catalog::PlantPath(const PathString &path) const {
282
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1494 if (is_regular_mountpoint_)
283
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1298 return path;
284
285
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196 assert(path.GetLength() >= root_prefix_.GetLength());
286
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196 PathString result = mountpoint_;
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196 const PathString suffix = path.Suffix(root_prefix_.GetLength());
288
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196 result.Append(suffix.GetChars(), suffix.GetLength());
289
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196 return result;
290 196 }
291
292
293 /**
294 * Performs a lookup on this Catalog for a given MD5 path hash.
295 * @param md5path the MD5 hash of the searched path
296 * @param expand_symlink indicates if variables in symlink should be resolved
297 * @param dirent will be set to the found DirectoryEntry
298 * @return true if DirectoryEntry was successfully found, false otherwise
299 */
300 14724 bool Catalog::LookupEntry(const shash::Md5 &md5path, const bool expand_symlink,
301 DirectoryEntry *dirent) const {
302
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14724 assert(IsInitialized());
303
304 14724 const MutexLockGuard m(lock_);
305
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14724 sql_lookup_md5path_->BindPathHash(md5path);
306
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14724 const bool found = sql_lookup_md5path_->FetchRow();
307
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14724 if (found && (dirent != NULL)) {
308
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14275 *dirent = sql_lookup_md5path_->GetDirent(this, expand_symlink);
309
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14275 FixTransitionPoint(md5path, dirent);
310 }
311
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14724 sql_lookup_md5path_->Reset();
312
313 14724 return found;
314 14724 }
315
316
317 /**
318 * Performs a lookup on this Catalog for a given MD5 path hash.
319 * @param md5path the MD5 hash of the searched path
320 * @param dirent will be set to the found DirectoryEntry
321 * @return true if DirectoryEntry was successfully found, false otherwise
322 */
323 14677 bool Catalog::LookupMd5Path(const shash::Md5 &md5path,
324 DirectoryEntry *dirent) const {
325 14677 return LookupEntry(md5path, true, dirent);
326 }
327
328
329 47 bool Catalog::LookupRawSymlink(const PathString &path,
330 LinkString *raw_symlink) const {
331
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47 DirectoryEntry dirent;
332
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47 const bool result = (LookupEntry(NormalizePath(path), false, &dirent));
333
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47 if (result)
334
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47 raw_symlink->Assign(dirent.symlink());
335 47 return result;
336 47 }
337
338
339 47 bool Catalog::LookupXattrsMd5Path(const shash::Md5 &md5path,
340 XattrList *xattrs) const {
341
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47 assert(IsInitialized());
342
343 47 const MutexLockGuard m(lock_);
344
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47 sql_lookup_xattrs_->BindPathHash(md5path);
345
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47 const bool found = sql_lookup_xattrs_->FetchRow();
346
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47 if (found && (xattrs != NULL)) {
347
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47 *xattrs = sql_lookup_xattrs_->GetXattrs();
348 }
349
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47 sql_lookup_xattrs_->Reset();
350
351 47 return found;
352 47 }
353
354
355 /**
356 * Perform a listing of the directory with the given MD5 path hash.
357 * @param path_hash the MD5 hash of the path of the directory to list
358 * @param listing will be set to the resulting DirectoryEntryList
359 * @return true on successful listing, false otherwise
360 */
361 236 bool Catalog::ListingMd5PathStat(const shash::Md5 &md5path,
362 StatEntryList *listing) const {
363
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236 assert(IsInitialized());
364
365
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236 DirectoryEntry dirent;
366
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236 StatEntry entry;
367
368 236 const MutexLockGuard m(lock_);
369
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236 sql_listing_->BindPathHash(md5path);
370
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798 while (sql_listing_->FetchRow()) {
371
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562 dirent = sql_listing_->GetDirent(this);
372
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562 if (dirent.IsHidden())
373 49 continue;
374
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513 FixTransitionPoint(md5path, &dirent);
375
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513 entry.name = dirent.name();
376
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513 entry.info = dirent.GetStatStructure();
377
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513 listing->PushBack(entry);
378 }
379
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236 sql_listing_->Reset();
380
381 236 return true;
382 236 }
383
384
385 /**
386 * Perform a listing of the directory with the given MD5 path hash.
387 * Returns only struct stat values
388 * @param path_hash the MD5 hash of the path of the directory to list
389 * @param listing will be set to the resulting DirectoryEntryList
390 * @param expand_symlink defines if magic symlinks should be resolved
391 * @return true on successful listing, false otherwise
392 */
393 2493 bool Catalog::ListingMd5Path(const shash::Md5 &md5path,
394 DirectoryEntryList *listing,
395 const bool expand_symlink) const {
396
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2493 assert(IsInitialized());
397
398 2493 const MutexLockGuard m(lock_);
399
400
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2493 sql_listing_->BindPathHash(md5path);
401
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6768 while (sql_listing_->FetchRow()) {
402
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4275 DirectoryEntry dirent = sql_listing_->GetDirent(this, expand_symlink);
403
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4275 FixTransitionPoint(md5path, &dirent);
404
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4275 listing->push_back(dirent);
405 4275 }
406
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2493 sql_listing_->Reset();
407
408 2493 return true;
409 2493 }
410
411
412 98 bool Catalog::AllChunksBegin() { return sql_all_chunks_->Open(); }
413
414
415 539 bool Catalog::AllChunksNext(shash::Any *hash,
416 zlib::Algorithms *compression_alg) {
417 539 return sql_all_chunks_->Next(hash, compression_alg);
418 }
419
420
421 98 bool Catalog::AllChunksEnd() { return sql_all_chunks_->Close(); }
422
423
424 /**
425 * Hash algorithm is given by the unchunked file.
426 * Could be figured out by a join but it is faster if the user of this
427 * method tells us.
428 */
429 49 bool Catalog::ListMd5PathChunks(const shash::Md5 &md5path,
430 const shash::Algorithms interpret_hashes_as,
431 FileChunkList *chunks) const {
432
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49 assert(IsInitialized() && chunks->IsEmpty());
433
434 49 const MutexLockGuard m(lock_);
435
436
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49 sql_chunks_listing_->BindPathHash(md5path);
437
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98 while (sql_chunks_listing_->FetchRow()) {
438
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49 chunks->PushBack(sql_chunks_listing_->GetFileChunk(interpret_hashes_as));
439 }
440
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49 sql_chunks_listing_->Reset();
441
442 49 return true;
443 49 }
444
445
446 /**
447 * Only used by the garbage collection
448 */
449 96 const Catalog::HashVector &Catalog::GetReferencedObjects() const {
450
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96 if (!referenced_hashes_.empty()) {
451 return referenced_hashes_;
452 }
453
454 // retrieve all referenced content hashes of both files and file chunks
455
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96 SqlListContentHashes list_content_hashes(database());
456
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717 while (list_content_hashes.FetchRow()) {
457
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621 referenced_hashes_.push_back(list_content_hashes.GetHash());
458 }
459
460 96 return referenced_hashes_;
461 96 }
462
463
464 2509 void Catalog::TakeDatabaseFileOwnership() {
465 2509 managed_database_ = true;
466
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2509 if (NULL != database_) {
467 2225 database_->TakeFileOwnership();
468 }
469 2509 }
470
471
472 47 void Catalog::DropDatabaseFileOwnership() {
473 47 managed_database_ = false;
474
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47 if (NULL != database_) {
475 47 database_->DropFileOwnership();
476 }
477 47 }
478
479
480 781 uint64_t Catalog::GetTTL() const {
481 781 const MutexLockGuard m(lock_);
482
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1562 return database().GetPropertyDefault<uint64_t>("TTL", kDefaultTTL);
483 781 }
484
485
486 bool Catalog::HasExplicitTTL() const {
487 const MutexLockGuard m(lock_);
488 return database().HasProperty("TTL");
489 }
490
491
492 2223 bool Catalog::GetVOMSAuthz(string *authz) const {
493 bool result;
494 2223 const MutexLockGuard m(lock_);
495
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2223 if (voms_authz_status_ == kVomsPresent) {
496 if (authz) {
497 *authz = voms_authz_;
498 }
499 result = true;
500
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2223 } else if (voms_authz_status_ == kVomsNone) {
501 result = false;
502 } else {
503
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2223 if (database().HasProperty("voms_authz")) {
504 voms_authz_ = database().GetProperty<string>("voms_authz");
505 if (authz) {
506 *authz = voms_authz_;
507 }
508 voms_authz_status_ = kVomsPresent;
509 } else {
510 2223 voms_authz_status_ = kVomsNone;
511 }
512 2223 result = (voms_authz_status_ == kVomsPresent);
513 }
514 2223 return result;
515 2223 }
516
517 4565 uint64_t Catalog::GetRevision() const {
518 4565 const MutexLockGuard m(lock_);
519
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9130 return database().GetPropertyDefault<uint64_t>("revision", 0);
520 4565 }
521
522 2321 uint64_t Catalog::GetLastModified() const {
523
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2321 const std::string prop_name = "last_modified";
524
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2321 return (database().HasProperty(prop_name))
525
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2321 ? database().GetProperty<int>(prop_name)
526 2321 : 0u;
527 2321 }
528
529
530 uint64_t Catalog::GetNumChunks() const {
531 return counters_.Get("self_regular") + counters_.Get("self_chunks");
532 }
533
534
535 94 uint64_t Catalog::GetNumEntries() const {
536
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94 const string sql = "SELECT count(*) FROM catalog;";
537
538 94 const MutexLockGuard m(lock_);
539
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94 SqlCatalog stmt(database(), sql);
540
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188 return (stmt.FetchRow()) ? stmt.RetrieveInt64(0) : 0;
541 94 }
542
543
544 96 shash::Any Catalog::GetPreviousRevision() const {
545 96 const MutexLockGuard m(lock_);
546 96 const std::string hash_string = database().GetPropertyDefault<std::string>(
547
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192 "previous_revision", "");
548 96 return (!hash_string.empty())
549
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49 ? shash::MkFromHexPtr(shash::HexPtr(hash_string),
550 shash::kSuffixCatalog)
551
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192 : shash::Any();
552 96 }
553
554
555 49 string Catalog::PrintMemStatistics() const {
556 49 sqlite::MemStatistics stats;
557 {
558 49 const MutexLockGuard m(lock_);
559
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49 database().GetMemStatistics(&stats);
560 49 }
561
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98 return string(mountpoint().GetChars(), mountpoint().GetLength()) + ": "
562
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196 + StringifyInt(stats.lookaside_slots_used) + " / "
563
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196 + StringifyInt(stats.lookaside_slots_max) + " slots -- "
564
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196 + StringifyInt(stats.lookaside_hit) + " hits, "
565
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196 + StringifyInt(stats.lookaside_miss_size) + " misses-size, "
566
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196 + StringifyInt(stats.lookaside_miss_full) + " misses-full -- "
567
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196 + StringifyInt(stats.page_cache_used / 1024) + " kB pages -- "
568
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196 + StringifyInt(stats.page_cache_hit) + " hits, "
569
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196 + StringifyInt(stats.page_cache_miss) + " misses -- "
570
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196 + StringifyInt(stats.schema_used / 1024) + " kB schema -- "
571
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196 + StringifyInt(stats.stmt_used / 1024) + " kB statements";
572 }
573
574
575 /**
576 * Determine the actual inode of a DirectoryEntry.
577 * The first used entry from a hardlink group deterimines the inode of the
578 * others.
579 * @param row_id the row id of a read row in the sqlite database
580 * @param hardlink_group the id of a possibly present hardlink group
581 * @return the assigned inode number
582 */
583 19112 inode_t Catalog::GetMangledInode(const uint64_t row_id,
584 const uint64_t hardlink_group) const {
585
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19112 assert(IsInitialized());
586
587
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19112 if (inode_range_.IsDummy()) {
588 794 return DirectoryEntry::kInvalidInode;
589 }
590
591 18318 inode_t inode = row_id + inode_range_.offset;
592
593 // Hardlinks are encoded in catalog-wide unique hard link group ids.
594 // These ids must be resolved to actual inode relationships at runtime.
595
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18318 if (hardlink_group > 0) {
596 const HardlinkGroupMap::const_iterator inode_iter = hardlink_groups_.find(
597 hardlink_group);
598
599 // Use cached entry if possible
600 if (inode_iter == hardlink_groups_.end()) {
601 hardlink_groups_[hardlink_group] = inode;
602 } else {
603 inode = inode_iter->second;
604 }
605 }
606
607
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18318 if (inode_annotation_) {
608 inode = inode_annotation_->Annotate(inode);
609 }
610
611 18318 return inode;
612 }
613
614
615 /**
616 * Get a list of all registered nested catalogs and bind mountpoints in this
617 * catalog.
618 * @return a list of all nested catalog and bind mountpoints.
619 */
620 11517 const Catalog::NestedCatalogList &Catalog::ListNestedCatalogs() const {
621 11517 const MutexLockGuard m(lock_);
622
623
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11517 if (nested_catalog_cache_dirty_) {
624
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2400 LogCvmfs(kLogCatalog, kLogDebug, "refreshing nested catalog cache of '%s'",
625
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4800 mountpoint().c_str());
626
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3373 while (sql_list_nested_->FetchRow()) {
627
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973 NestedCatalog nested;
628
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973 nested.mountpoint = PlantPath(sql_list_nested_->GetPath());
629
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973 nested.hash = sql_list_nested_->GetContentHash();
630
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973 nested.size = sql_list_nested_->GetSize();
631
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973 nested_catalog_cache_.push_back(nested);
632 973 }
633
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2400 sql_list_nested_->Reset();
634 2400 nested_catalog_cache_dirty_ = false;
635 }
636
637 11517 return nested_catalog_cache_;
638 11517 }
639
640
641 /**
642 * Get a list of all registered nested catalogs without bind mountpoints. Used
643 * for replication and garbage collection.
644 * @return a list of all nested catalogs.
645 */
646 911 const Catalog::NestedCatalogList Catalog::ListOwnNestedCatalogs() const {
647 911 NestedCatalogList result;
648
649 911 const MutexLockGuard m(lock_);
650
651
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1138 while (sql_own_list_nested_->FetchRow()) {
652
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227 NestedCatalog nested;
653
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227 nested.mountpoint = PlantPath(sql_own_list_nested_->GetPath());
654
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227 nested.hash = sql_own_list_nested_->GetContentHash();
655
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227 nested.size = sql_own_list_nested_->GetSize();
656
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227 result.push_back(nested);
657 227 }
658
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911 sql_own_list_nested_->Reset();
659
660 1822 return result;
661 911 }
662
663
664 /**
665 * Drops the nested catalog cache. Usually this is only useful in subclasses
666 * that implement writable catalogs.
667 *
668 * Note: this action is _not_ secured by the catalog's mutex. If serialisation
669 * is required the subclass needs to ensure that.
670 */
671 1889 void Catalog::ResetNestedCatalogCacheUnprotected() {
672 1889 nested_catalog_cache_.clear();
673 1889 nested_catalog_cache_dirty_ = true;
674 1889 }
675
676
677 /**
678 * Looks for a specific registered nested catalog based on a path.
679 */
680 1211 bool Catalog::FindNested(const PathString &mountpoint, shash::Any *hash,
681 uint64_t *size) const {
682 1211 const MutexLockGuard m(lock_);
683
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1211 const PathString normalized_mountpoint = NormalizePath2(mountpoint);
684
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1211 sql_lookup_nested_->BindSearchPath(normalized_mountpoint);
685
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1211 const bool found = sql_lookup_nested_->FetchRow();
686
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1211 if (found && (hash != NULL)) {
687
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1158 *hash = sql_lookup_nested_->GetContentHash();
688
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1158 *size = sql_lookup_nested_->GetSize();
689 }
690
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1211 sql_lookup_nested_->Reset();
691
692 1211 return found;
693 1211 }
694
695
696 /**
697 * Sets a new object to do inode annotations (or set to NULL)
698 * The annotation object is not owned by the catalog.
699 */
700 3243 void Catalog::SetInodeAnnotation(InodeAnnotation *new_annotation) {
701 3243 const MutexLockGuard m(lock_);
702 // Since annotated inodes could come back to the catalog in order to
703 // get stripped, exchanging the annotation is not allowed
704
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3243 assert((inode_annotation_ == NULL) || (inode_annotation_ == new_annotation));
705 3243 inode_annotation_ = new_annotation;
706 3243 }
707
708
709 3243 void Catalog::SetOwnerMaps(const OwnerMap *uid_map, const OwnerMap *gid_map) {
710
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3243 uid_map_ = (uid_map && uid_map->HasEffect()) ? uid_map : NULL;
711
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3243 gid_map_ = (gid_map && gid_map->HasEffect()) ? gid_map : NULL;
712 3243 }
713
714
715 /**
716 * Add a Catalog as child to this Catalog.
717 * @param child the Catalog to define as child
718 */
719 1551 void Catalog::AddChild(Catalog *child) {
720
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1551 assert(NULL == FindChild(child->mountpoint()));
721
722 1551 const MutexLockGuard m(lock_);
723
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1551 children_[child->mountpoint()] = child;
724 1551 child->set_parent(this);
725 1551 }
726
727
728 /**
729 * Removes a Catalog from the children list of this Catalog
730 * @param child the Catalog to delete as child
731 */
732 1018 void Catalog::RemoveChild(Catalog *child) {
733
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1018 assert(NULL != FindChild(child->mountpoint()));
734
735 1018 const MutexLockGuard m(lock_);
736 1018 child->set_parent(NULL);
737
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1018 children_.erase(child->mountpoint());
738 1018 }
739
740
741 4601 CatalogList Catalog::GetChildren() const {
742 4601 CatalogList result;
743
744 4601 const MutexLockGuard m(lock_);
745 9202 for (NestedCatalogMap::const_iterator i = children_.begin(),
746 4601 iEnd = children_.end();
747
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6224 i != iEnd;
748 1623 ++i) {
749
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1623 result.push_back(i->second);
750 }
751
752 9202 return result;
753 4601 }
754
755
756 /**
757 * Find the nested catalog that serves the given path.
758 * It might be possible that the path is in fact served by a child of the found
759 * nested catalog.
760 * @param path the path to find a best fitting catalog for
761 * @return a pointer to the best fitting child or NULL if it does not fit at all
762 */
763 11510 Catalog *Catalog::FindSubtree(const PathString &path) const {
764 // Check if this catalog fits the beginning of the path.
765
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11510 if (!path.StartsWith(mountpoint_))
766 return NULL;
767
768
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11510 PathString remaining(path.Suffix(mountpoint_.GetLength()));
769
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11510 remaining.Append("/", 1);
770
771 // now we recombine the path elements successively
772 // in order to find a child which serves a part of the path
773
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11510 PathString path_prefix(mountpoint_);
774 11510 Catalog *result = NULL;
775 // Skip the first '/'
776
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11510 path_prefix.Append("/", 1);
777 11510 const char *c = remaining.GetChars() + 1;
778
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103648 for (unsigned i = 1; i < remaining.GetLength(); ++i, ++c) {
779
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93287 if (*c == '/') {
780
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21086 result = FindChild(path_prefix);
781
782 // If we found a child serving a part of the path we can stop searching.
783 // Remaining sub path elements are possibly served by a grand child.
784
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21086 if (result != NULL)
785 1149 break;
786 }
787
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92138 path_prefix.Append(c, 1);
788 }
789
790 11510 return result;
791 11510 }
792
793
794 /**
795 * Looks for a child catalog, which is a subset of all registered nested
796 * catalogs.
797 */
798 23739 Catalog *Catalog::FindChild(const PathString &mountpoint) const {
799 23739 NestedCatalogMap::const_iterator nested_iter;
800
801 23739 const MutexLockGuard m(lock_);
802
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23739 nested_iter = children_.find(mountpoint);
803
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25964 Catalog *result = (nested_iter == children_.end()) ? NULL
804 2225 : nested_iter->second;
805
806 23739 return result;
807 23739 }
808
809
810 /**
811 * For the transition points for nested catalogs and bind mountpoints, the inode
812 * is ambiguous. It has to be set to the parent inode because nested catalogs
813 * are lazily loaded.
814 * @param md5path the MD5 hash of the entry to check
815 * @param dirent the DirectoryEntry to perform coherence fixes on
816 */
817 19063 void Catalog::FixTransitionPoint(const shash::Md5 &md5path,
818 DirectoryEntry *dirent) const {
819
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19063 if (!HasParent())
820 15867 return;
821
822
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3196 if (dirent->IsNestedCatalogRoot()) {
823 // Normal nested catalog
824
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191 DirectoryEntry parent_dirent;
825
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191 const bool retval = parent_->LookupMd5Path(md5path, &parent_dirent);
826
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191 assert(retval);
827 191 dirent->set_inode(parent_dirent.inode());
828
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3196 } else if (md5path == kMd5PathEmpty) {
829 // Bind mountpoint
830 DirectoryEntry parent_dirent;
831 const bool retval = parent_->LookupPath(mountpoint_, &parent_dirent);
832 assert(retval);
833 dirent->set_inode(parent_dirent.inode());
834 }
835 }
836
837 } // namespace catalog
838