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cd748f27 | 1 | |
2 | /* | |
47f6e231 | 3 | * $Id: store_dir_ufs.cc,v 1.85 2007/08/13 17:20:57 hno Exp $ |
cd748f27 | 4 | * |
5 | * DEBUG: section 47 Store Directory Routines | |
6 | * AUTHOR: Duane Wessels | |
7 | * | |
2b6662ba | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
cd748f27 | 9 | * ---------------------------------------------------------- |
10 | * | |
2b6662ba | 11 | * Squid is the result of efforts by numerous individuals from |
12 | * the Internet community; see the CONTRIBUTORS file for full | |
13 | * details. Many organizations have provided support for Squid's | |
14 | * development; see the SPONSORS file for full details. Squid is | |
15 | * Copyrighted (C) 2001 by the Regents of the University of | |
16 | * California; see the COPYRIGHT file for full details. Squid | |
17 | * incorporates software developed and/or copyrighted by other | |
18 | * sources; see the CREDITS file for full details. | |
cd748f27 | 19 | * |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
33 | * | |
34 | */ | |
35 | ||
36 | #include "squid.h" | |
e6ccf245 | 37 | #include "Store.h" |
528b2c61 | 38 | #include "fde.h" |
4d6d905e | 39 | #include "ufscommon.h" |
51ee7c82 | 40 | #include "StoreSwapLogData.h" |
b9ae18aa | 41 | #include "ConfigOption.h" |
42 | #include "DiskIO/DiskIOStrategy.h" | |
43 | #include "DiskIO/DiskIOModule.h" | |
c8f4eac4 | 44 | #include "Parsing.h" |
985c86bc | 45 | #include "SquidTime.h" |
cd748f27 | 46 | |
d3b3ab85 | 47 | #include "SwapDir.h" |
d3b3ab85 | 48 | int UFSSwapDir::NumberOfUFSDirs = 0; |
49 | int *UFSSwapDir::UFSDirToGlobalDirMapping = NULL; | |
cd748f27 | 50 | |
cd748f27 | 51 | /* |
52 | * storeUfsDirCheckObj | |
53 | * | |
54 | * This routine is called by storeDirSelectSwapDir to see if the given | |
55 | * object is able to be stored on this filesystem. UFS filesystems will | |
56 | * happily store anything as long as the LRU time isn't too small. | |
57 | */ | |
58 | int | |
59b2d47f | 59 | UFSSwapDir::canStore(StoreEntry const &e)const |
cd748f27 | 60 | { |
59b2d47f | 61 | if (IO->shedLoad()) |
62 | return -1; | |
62e76326 | 63 | |
59b2d47f | 64 | return IO->load(); |
cd748f27 | 65 | } |
66 | ||
8e8d4f30 | 67 | |
59b2d47f | 68 | /* ========== LOCAL FUNCTIONS ABOVE, GLOBAL FUNCTIONS BELOW ========== */ |
d3b3ab85 | 69 | |
70 | void | |
59b2d47f | 71 | UFSSwapDir::parseSizeL1L2() |
cd748f27 | 72 | { |
cd748f27 | 73 | int i; |
74 | int size; | |
cd748f27 | 75 | |
76 | i = GetInteger(); | |
77 | size = i << 10; /* Mbytes to kbytes */ | |
62e76326 | 78 | |
cd748f27 | 79 | if (size <= 0) |
59b2d47f | 80 | fatal("UFSSwapDir::parseSizeL1L2: invalid size value"); |
cd748f27 | 81 | |
82 | /* just reconfigure it */ | |
0931cb03 | 83 | if (reconfiguring) { |
84 | if (size == max_size) | |
bf8fe701 | 85 | debugs(3, 2, "Cache dir '" << path << "' size remains unchanged at " << size << " KB"); |
0931cb03 | 86 | else |
bf8fe701 | 87 | debugs(3, 1, "Cache dir '" << path << "' size changed to " << size << " KB"); |
0931cb03 | 88 | } |
62e76326 | 89 | |
d3b3ab85 | 90 | max_size = size; |
59b2d47f | 91 | |
92 | l1 = GetInteger(); | |
93 | ||
94 | if (l1 <= 0) | |
95 | fatal("UFSSwapDir::parseSizeL1L2: invalid level 1 directories value"); | |
96 | ||
97 | l2 = GetInteger(); | |
98 | ||
99 | if (l2 <= 0) | |
100 | fatal("UFSSwapDir::parseSizeL1L2: invalid level 2 directories value"); | |
cd748f27 | 101 | } |
102 | ||
59b2d47f | 103 | /* |
104 | * storeUfsDirReconfigure | |
105 | * | |
106 | * This routine is called when the given swapdir needs reconfiguring | |
107 | */ | |
108 | ||
cd748f27 | 109 | void |
59b2d47f | 110 | UFSSwapDir::reconfigure(int index, char *path) |
cd748f27 | 111 | { |
59b2d47f | 112 | parseSizeL1L2(); |
113 | parseOptions(1); | |
cd748f27 | 114 | } |
115 | ||
cd748f27 | 116 | /* |
117 | * storeUfsDirParse | |
118 | * | |
119 | * Called when a *new* fs is being setup. | |
120 | */ | |
d3b3ab85 | 121 | void |
59b2d47f | 122 | UFSSwapDir::parse (int anIndex, char *aPath) |
cd748f27 | 123 | { |
59b2d47f | 124 | index = anIndex; |
59b2d47f | 125 | path = xstrdup(aPath); |
62e76326 | 126 | |
1cd79a58 | 127 | parseSizeL1L2(); |
128 | ||
59b2d47f | 129 | /* Initialise replacement policy stuff */ |
130 | repl = createRemovalPolicy(Config.replPolicy); | |
62e76326 | 131 | |
59b2d47f | 132 | parseOptions(0); |
133 | } | |
62e76326 | 134 | |
b9ae18aa | 135 | void |
136 | UFSSwapDir::changeIO(DiskIOModule *module) | |
137 | { | |
138 | DiskIOStrategy *anIO = module->createStrategy(); | |
139 | safe_free(ioType); | |
140 | ioType = xstrdup(module->type()); | |
141 | ||
142 | delete IO->io; | |
143 | IO->io = anIO; | |
144 | /* Change the IO Options */ | |
145 | ||
146 | if (currentIOOptions->options.size() > 2) | |
147 | delete currentIOOptions->options.pop_back(); | |
148 | ||
149 | /* TODO: factor out these 4 lines */ | |
150 | ConfigOption *ioOptions = IO->io->getOptionTree(); | |
151 | ||
152 | if (ioOptions) | |
153 | currentIOOptions->options.push_back(ioOptions); | |
154 | } | |
155 | ||
156 | bool | |
157 | UFSSwapDir::optionIOParse(char const *option, const char *value, int reconfiguring) | |
59b2d47f | 158 | { |
b9ae18aa | 159 | if (strcmp(option, "IOEngine") != 0) |
160 | return false; | |
62e76326 | 161 | |
b9ae18aa | 162 | if (reconfiguring) |
163 | /* silently ignore this */ | |
164 | return true; | |
62e76326 | 165 | |
b9ae18aa | 166 | if (!value) |
167 | self_destruct(); | |
d3b3ab85 | 168 | |
b9ae18aa | 169 | DiskIOModule *module = DiskIOModule::Find(value); |
62e76326 | 170 | |
b9ae18aa | 171 | if (!module) |
172 | self_destruct(); | |
8e8d4f30 | 173 | |
b9ae18aa | 174 | changeIO(module); |
175 | ||
176 | return true; | |
177 | } | |
178 | ||
179 | void | |
180 | UFSSwapDir::optionIODump(StoreEntry * e) const | |
181 | { | |
182 | storeAppendPrintf(e, " IOEngine=%s", ioType); | |
183 | } | |
184 | ||
185 | ConfigOption * | |
186 | UFSSwapDir::getOptionTree() const | |
187 | { | |
188 | ConfigOption *parentResult = SwapDir::getOptionTree(); | |
189 | ||
e2a8733e | 190 | if (currentIOOptions == NULL) |
191 | currentIOOptions = new ConfigOptionVector(); | |
192 | ||
b9ae18aa | 193 | currentIOOptions->options.push_back(parentResult); |
e2a8733e | 194 | |
b9ae18aa | 195 | currentIOOptions->options.push_back(new ConfigOptionAdapter<UFSSwapDir>(*const_cast<UFSSwapDir *>(this), &UFSSwapDir::optionIOParse, &UFSSwapDir::optionIODump)); |
196 | ||
5f2d056f | 197 | if (ConfigOption *ioOptions = IO->io->getOptionTree()) |
b9ae18aa | 198 | currentIOOptions->options.push_back(ioOptions); |
199 | ||
e2a8733e | 200 | ConfigOption* result = currentIOOptions; |
201 | ||
202 | currentIOOptions = NULL; | |
203 | ||
204 | return result; | |
cd748f27 | 205 | } |
206 | ||
207 | /* | |
208 | * Initial setup / end destruction | |
209 | */ | |
d3b3ab85 | 210 | void |
211 | UFSSwapDir::init() | |
212 | { | |
d295d770 | 213 | debugs(47, 3, "Initialising UFS SwapDir engine."); |
214 | /* Parsing must be finished by now - force to NULL, don't delete */ | |
b9ae18aa | 215 | currentIOOptions = NULL; |
d3b3ab85 | 216 | static int started_clean_event = 0; |
217 | static const char *errmsg = | |
62e76326 | 218 | "\tFailed to verify one of the swap directories, Check cache.log\n" |
219 | "\tfor details. Run 'squid -z' to create swap directories\n" | |
220 | "\tif needed, or if running Squid for the first time."; | |
59b2d47f | 221 | IO->init(); |
62e76326 | 222 | |
d3b3ab85 | 223 | if (verifyCacheDirs()) |
62e76326 | 224 | fatal(errmsg); |
225 | ||
d3b3ab85 | 226 | openLog(); |
62e76326 | 227 | |
d3b3ab85 | 228 | rebuild(); |
62e76326 | 229 | |
d3b3ab85 | 230 | if (!started_clean_event) { |
62e76326 | 231 | eventAdd("UFS storeDirClean", CleanEvent, NULL, 15.0, 1); |
232 | started_clean_event = 1; | |
d3b3ab85 | 233 | } |
62e76326 | 234 | |
d3b3ab85 | 235 | (void) storeDirGetBlkSize(path, &fs.blksize); |
236 | } | |
237 | ||
238 | void | |
c8f4eac4 | 239 | UFSSwapDir::create() |
d3b3ab85 | 240 | { |
d295d770 | 241 | debugs(47, 3, "Creating swap space in " << path); |
d3b3ab85 | 242 | createDirectory(path, 0); |
243 | createSwapSubDirs(); | |
244 | } | |
245 | ||
b7717b61 | 246 | UFSSwapDir::UFSSwapDir(char const *aType, const char *anIOType) : SwapDir(aType), IO(NULL), map(file_map_create()), suggest(0), swaplog_fd (-1), currentIOOptions(new ConfigOptionVector()), ioType(xstrdup(anIOType)) |
247 | { | |
248 | /* modulename is only set to disk modules that are built, by configure, | |
249 | * so the Find call should never return NULL here. | |
250 | */ | |
251 | IO = new UFSStrategy(DiskIOModule::Find(anIOType)->createStrategy()); | |
252 | } | |
d3b3ab85 | 253 | |
254 | UFSSwapDir::~UFSSwapDir() | |
255 | { | |
256 | if (swaplog_fd > -1) { | |
62e76326 | 257 | file_close(swaplog_fd); |
258 | swaplog_fd = -1; | |
d3b3ab85 | 259 | } |
62e76326 | 260 | |
d3b3ab85 | 261 | filemapFreeMemory(map); |
62e76326 | 262 | |
d3b3ab85 | 263 | if (IO) |
00d77d6b | 264 | delete IO; |
62e76326 | 265 | |
d3b3ab85 | 266 | IO = NULL; |
b9ae18aa | 267 | |
268 | safe_free(ioType); | |
d3b3ab85 | 269 | } |
270 | ||
d3b3ab85 | 271 | void |
272 | UFSSwapDir::dumpEntry(StoreEntry &e) const | |
273 | { | |
bf8fe701 | 274 | debugs(47, 0, "UFSSwapDir::dumpEntry: FILENO "<< std::setfill('0') << std::hex << std::uppercase << std::setw(8) << e.swap_filen); |
275 | debugs(47, 0, "UFSSwapDir::dumpEntry: PATH " << fullPath(e.swap_filen, NULL) ); | |
3900307b | 276 | e.dump(0); |
d3b3ab85 | 277 | } |
278 | ||
279 | /* | |
280 | * UFSSwapDir::doubleCheck | |
281 | * | |
282 | * This is called by storeCleanup() if -S was given on the command line. | |
283 | */ | |
284 | bool | |
285 | UFSSwapDir::doubleCheck(StoreEntry & e) | |
286 | { | |
62e76326 | 287 | |
d3b3ab85 | 288 | struct stat sb; |
62e76326 | 289 | |
c8f4eac4 | 290 | if (::stat(fullPath(e.swap_filen, NULL), &sb) < 0) { |
bf8fe701 | 291 | debugs(47, 0, "UFSSwapDir::doubleCheck: MISSING SWAP FILE"); |
62e76326 | 292 | dumpEntry(e); |
293 | return true; | |
d3b3ab85 | 294 | } |
62e76326 | 295 | |
d3b3ab85 | 296 | if ((off_t)e.swap_file_sz != sb.st_size) { |
bf8fe701 | 297 | debugs(47, 0, "UFSSwapDir::doubleCheck: SIZE MISMATCH"); |
4a7a3d56 | 298 | debugs(47, 0, "UFSSwapDir::doubleCheck: ENTRY SIZE: " << e.swap_file_sz << ", FILE SIZE: " << sb.st_size); |
62e76326 | 299 | dumpEntry(e); |
300 | return true; | |
d3b3ab85 | 301 | } |
62e76326 | 302 | |
d3b3ab85 | 303 | return false; |
304 | } | |
305 | ||
306 | void | |
307 | UFSSwapDir::statfs(StoreEntry & sentry) const | |
308 | { | |
309 | int totl_kb = 0; | |
310 | int free_kb = 0; | |
311 | int totl_in = 0; | |
312 | int free_in = 0; | |
313 | int x; | |
314 | storeAppendPrintf(&sentry, "First level subdirectories: %d\n", l1); | |
315 | storeAppendPrintf(&sentry, "Second level subdirectories: %d\n", l2); | |
316 | storeAppendPrintf(&sentry, "Maximum Size: %d KB\n", max_size); | |
317 | storeAppendPrintf(&sentry, "Current Size: %d KB\n", cur_size); | |
318 | storeAppendPrintf(&sentry, "Percent Used: %0.2f%%\n", | |
62e76326 | 319 | 100.0 * cur_size / max_size); |
d3b3ab85 | 320 | storeAppendPrintf(&sentry, "Filemap bits in use: %d of %d (%d%%)\n", |
62e76326 | 321 | map->n_files_in_map, map->max_n_files, |
322 | percent(map->n_files_in_map, map->max_n_files)); | |
d3b3ab85 | 323 | x = storeDirGetUFSStats(path, &totl_kb, &free_kb, &totl_in, &free_in); |
62e76326 | 324 | |
d3b3ab85 | 325 | if (0 == x) { |
62e76326 | 326 | storeAppendPrintf(&sentry, "Filesystem Space in use: %d/%d KB (%d%%)\n", |
327 | totl_kb - free_kb, | |
328 | totl_kb, | |
329 | percent(totl_kb - free_kb, totl_kb)); | |
330 | storeAppendPrintf(&sentry, "Filesystem Inodes in use: %d/%d (%d%%)\n", | |
331 | totl_in - free_in, | |
332 | totl_in, | |
333 | percent(totl_in - free_in, totl_in)); | |
d3b3ab85 | 334 | } |
62e76326 | 335 | |
d3b3ab85 | 336 | storeAppendPrintf(&sentry, "Flags:"); |
62e76326 | 337 | |
d3b3ab85 | 338 | if (flags.selected) |
62e76326 | 339 | storeAppendPrintf(&sentry, " SELECTED"); |
340 | ||
d3b3ab85 | 341 | if (flags.read_only) |
62e76326 | 342 | storeAppendPrintf(&sentry, " READ-ONLY"); |
343 | ||
d3b3ab85 | 344 | storeAppendPrintf(&sentry, "\n"); |
59b2d47f | 345 | |
346 | IO->statfs(sentry); | |
d3b3ab85 | 347 | } |
348 | ||
349 | void | |
c8f4eac4 | 350 | UFSSwapDir::maintain() |
d3b3ab85 | 351 | { |
650c4b88 | 352 | /* We can't delete objects while rebuilding swap */ |
353 | ||
bef81ea5 | 354 | /* XXX FIXME each store should start maintaining as it comes online. */ |
355 | ||
356 | if (StoreController::store_dirs_rebuilding) | |
650c4b88 | 357 | return; |
358 | ||
d3b3ab85 | 359 | StoreEntry *e = NULL; |
650c4b88 | 360 | |
d3b3ab85 | 361 | int removed = 0; |
650c4b88 | 362 | |
d3b3ab85 | 363 | RemovalPurgeWalker *walker; |
62e76326 | 364 | |
c8f4eac4 | 365 | double f = (double) (cur_size - minSize()) / (max_size - minSize()); |
650c4b88 | 366 | |
367 | f = f < 0.0 ? 0.0 : f > 1.0 ? 1.0 : f; | |
368 | ||
369 | int max_scan = (int) (f * 400.0 + 100.0); | |
370 | ||
371 | int max_remove = (int) (f * 70.0 + 10.0); | |
372 | ||
373 | /* | |
374 | * This is kinda cheap, but so we need this priority hack? | |
375 | */ | |
62e76326 | 376 | |
bf8fe701 | 377 | debugs(47, 3, "storeMaintainSwapSpace: f=" << f << ", max_scan=" << max_scan << ", max_remove=" << max_remove ); |
650c4b88 | 378 | |
d3b3ab85 | 379 | walker = repl->PurgeInit(repl, max_scan); |
62e76326 | 380 | |
d3b3ab85 | 381 | while (1) { |
c8f4eac4 | 382 | if (cur_size < (int) minSize()) /* cur_size should be unsigned */ |
62e76326 | 383 | break; |
384 | ||
385 | if (removed >= max_remove) | |
386 | break; | |
387 | ||
388 | e = walker->Next(walker); | |
389 | ||
390 | if (!e) | |
391 | break; /* no more objects */ | |
392 | ||
393 | removed++; | |
394 | ||
5f33b71d | 395 | e->release(); |
d3b3ab85 | 396 | } |
62e76326 | 397 | |
d3b3ab85 | 398 | walker->Done(walker); |
bf8fe701 | 399 | debugs(47, (removed ? 2 : 3), "UFSSwapDir::maintain: " << path << |
400 | " removed " << removed << "/" << max_remove << " f=" << | |
401 | std::setprecision(4) << f << " max_scan=" << max_scan); | |
d3b3ab85 | 402 | } |
403 | ||
404 | /* | |
405 | * UFSSwapDir::reference | |
406 | * | |
407 | * This routine is called whenever an object is referenced, so we can | |
408 | * maintain replacement information within the storage fs. | |
409 | */ | |
410 | void | |
411 | UFSSwapDir::reference(StoreEntry &e) | |
412 | { | |
bf8fe701 | 413 | debugs(47, 3, "UFSSwapDir::reference: referencing " << &e << " " << e.swap_dirn << "/" << e.swap_filen); |
62e76326 | 414 | |
d3b3ab85 | 415 | if (repl->Referenced) |
62e76326 | 416 | repl->Referenced(repl, &e, &e.repl); |
417 | } | |
d3b3ab85 | 418 | |
419 | /* | |
420 | * UFSSwapDir::dereference | |
421 | * This routine is called whenever the last reference to an object is | |
422 | * removed, to maintain replacement information within the storage fs. | |
423 | */ | |
424 | void | |
425 | UFSSwapDir::dereference(StoreEntry & e) | |
426 | { | |
bf8fe701 | 427 | debugs(47, 3, "UFSSwapDir::dereference: referencing " << &e << " " << e.swap_dirn << "/" << e.swap_filen); |
62e76326 | 428 | |
d3b3ab85 | 429 | if (repl->Dereferenced) |
62e76326 | 430 | repl->Dereferenced(repl, &e, &e.repl); |
d3b3ab85 | 431 | } |
432 | ||
433 | StoreIOState::Pointer | |
4fcc8876 | 434 | UFSSwapDir::createStoreIO(StoreEntry &e, StoreIOState::STFNCB * file_callback, StoreIOState::STIOCB * callback, void *callback_data) |
d3b3ab85 | 435 | { |
436 | return IO->create (this, &e, file_callback, callback, callback_data); | |
437 | } | |
438 | ||
439 | StoreIOState::Pointer | |
4fcc8876 | 440 | UFSSwapDir::openStoreIO(StoreEntry &e, StoreIOState::STFNCB * file_callback, StoreIOState::STIOCB * callback, void *callback_data) |
d3b3ab85 | 441 | { |
442 | return IO->open (this, &e, file_callback, callback, callback_data); | |
443 | } | |
444 | ||
445 | int | |
446 | UFSSwapDir::mapBitTest(sfileno filn) | |
447 | { | |
448 | return file_map_bit_test(map, filn); | |
449 | } | |
450 | ||
451 | void | |
452 | UFSSwapDir::mapBitSet(sfileno filn) | |
453 | { | |
454 | file_map_bit_set(map, filn); | |
455 | } | |
456 | ||
457 | void | |
458 | UFSSwapDir::mapBitReset(sfileno filn) | |
459 | { | |
460 | /* | |
461 | * We have to test the bit before calling file_map_bit_reset. | |
462 | * file_map_bit_reset doesn't do bounds checking. It assumes | |
463 | * filn is a valid file number, but it might not be because | |
464 | * the map is dynamic in size. Also clearing an already clear | |
465 | * bit puts the map counter of-of-whack. | |
466 | */ | |
62e76326 | 467 | |
d3b3ab85 | 468 | if (file_map_bit_test(map, filn)) |
62e76326 | 469 | file_map_bit_reset(map, filn); |
d3b3ab85 | 470 | } |
471 | ||
472 | int | |
473 | UFSSwapDir::mapBitAllocate() | |
474 | { | |
475 | int fn; | |
476 | fn = file_map_allocate(map, suggest); | |
477 | file_map_bit_set(map, fn); | |
478 | suggest = fn + 1; | |
479 | return fn; | |
480 | } | |
481 | ||
d3b3ab85 | 482 | char * |
483 | UFSSwapDir::swapSubDir(int subdirn)const | |
484 | { | |
485 | LOCAL_ARRAY(char, fullfilename, SQUID_MAXPATHLEN); | |
486 | assert(0 <= subdirn && subdirn < l1); | |
487 | snprintf(fullfilename, SQUID_MAXPATHLEN, "%s/%02X", path, subdirn); | |
488 | return fullfilename; | |
489 | } | |
490 | ||
491 | int | |
492 | UFSSwapDir::createDirectory(const char *path, int should_exist) | |
493 | { | |
494 | int created = 0; | |
62e76326 | 495 | |
d3b3ab85 | 496 | struct stat st; |
497 | getCurrentTime(); | |
62e76326 | 498 | |
c8f4eac4 | 499 | if (0 == ::stat(path, &st)) { |
62e76326 | 500 | if (S_ISDIR(st.st_mode)) { |
bf8fe701 | 501 | debugs(47, should_exist ? 3 : 1, path << " exists"); |
62e76326 | 502 | } else { |
503 | fatalf("Swap directory %s is not a directory.", path); | |
504 | } | |
505 | ||
d3b3ab85 | 506 | #ifdef _SQUID_MSWIN_ |
62e76326 | 507 | |
d3b3ab85 | 508 | } else if (0 == mkdir(path)) { |
509 | #else | |
62e76326 | 510 | |
d3b3ab85 | 511 | } else if (0 == mkdir(path, 0755)) { |
512 | #endif | |
bf8fe701 | 513 | debugs(47, should_exist ? 1 : 3, path << " created"); |
62e76326 | 514 | created = 1; |
d3b3ab85 | 515 | } else { |
62e76326 | 516 | fatalf("Failed to make swap directory %s: %s", |
517 | path, xstrerror()); | |
d3b3ab85 | 518 | } |
62e76326 | 519 | |
d3b3ab85 | 520 | return created; |
521 | } | |
522 | ||
523 | bool | |
524 | UFSSwapDir::pathIsDirectory(const char *path)const | |
525 | { | |
62e76326 | 526 | |
d3b3ab85 | 527 | struct stat sb; |
62e76326 | 528 | |
c8f4eac4 | 529 | if (::stat(path, &sb) < 0) { |
bf8fe701 | 530 | debugs(47, 0, "" << path << ": " << xstrerror()); |
62e76326 | 531 | return false; |
d3b3ab85 | 532 | } |
62e76326 | 533 | |
d3b3ab85 | 534 | if (S_ISDIR(sb.st_mode) == 0) { |
bf8fe701 | 535 | debugs(47, 0, "" << path << " is not a directory"); |
62e76326 | 536 | return false; |
d3b3ab85 | 537 | } |
62e76326 | 538 | |
d3b3ab85 | 539 | return true; |
540 | } | |
541 | ||
542 | /* | |
543 | * This function is called by commonUfsDirInit(). If this returns < 0, | |
544 | * then Squid exits, complains about swap directories not | |
545 | * existing, and instructs the admin to run 'squid -z' | |
546 | */ | |
547 | bool | |
548 | UFSSwapDir::verifyCacheDirs() | |
549 | { | |
550 | if (!pathIsDirectory(path)) | |
62e76326 | 551 | return true; |
552 | ||
d3b3ab85 | 553 | for (int j = 0; j < l1; j++) { |
62e76326 | 554 | char const *aPath = swapSubDir(j); |
555 | ||
556 | if (!pathIsDirectory(aPath)) | |
557 | return true; | |
d3b3ab85 | 558 | } |
62e76326 | 559 | |
d3b3ab85 | 560 | return false; |
561 | } | |
562 | ||
563 | void | |
564 | UFSSwapDir::createSwapSubDirs() | |
565 | { | |
d3b3ab85 | 566 | LOCAL_ARRAY(char, name, MAXPATHLEN); |
62e76326 | 567 | |
59b2d47f | 568 | for (int i = 0; i < l1; i++) { |
62e76326 | 569 | snprintf(name, MAXPATHLEN, "%s/%02X", path, i); |
570 | ||
59b2d47f | 571 | int should_exist; |
572 | ||
62e76326 | 573 | if (createDirectory(name, 0)) |
574 | should_exist = 0; | |
575 | else | |
576 | should_exist = 1; | |
577 | ||
bf8fe701 | 578 | debugs(47, 1, "Making directories in " << name); |
62e76326 | 579 | |
59b2d47f | 580 | for (int k = 0; k < l2; k++) { |
62e76326 | 581 | snprintf(name, MAXPATHLEN, "%s/%02X/%02X", path, i, k); |
582 | createDirectory(name, should_exist); | |
583 | } | |
d3b3ab85 | 584 | } |
585 | } | |
586 | ||
587 | char * | |
588 | UFSSwapDir::logFile(char const *ext) const | |
589 | { | |
590 | LOCAL_ARRAY(char, lpath, SQUID_MAXPATHLEN); | |
591 | LOCAL_ARRAY(char, pathtmp, SQUID_MAXPATHLEN); | |
592 | LOCAL_ARRAY(char, digit, 32); | |
593 | char *pathtmp2; | |
62e76326 | 594 | |
d3b3ab85 | 595 | if (Config.Log.swap) { |
62e76326 | 596 | xstrncpy(pathtmp, path, SQUID_MAXPATHLEN - 64); |
597 | pathtmp2 = pathtmp; | |
598 | ||
599 | while ((pathtmp2 = strchr(pathtmp2, '/')) != NULL) | |
600 | *pathtmp2 = '.'; | |
601 | ||
602 | while (strlen(pathtmp) && pathtmp[strlen(pathtmp) - 1] == '.') | |
603 | pathtmp[strlen(pathtmp) - 1] = '\0'; | |
604 | ||
605 | for (pathtmp2 = pathtmp; *pathtmp2 == '.'; pathtmp2++) | |
606 | ||
607 | ; | |
608 | snprintf(lpath, SQUID_MAXPATHLEN - 64, Config.Log.swap, pathtmp2); | |
609 | ||
610 | if (strncmp(lpath, Config.Log.swap, SQUID_MAXPATHLEN - 64) == 0) { | |
611 | strcat(lpath, "."); | |
612 | snprintf(digit, 32, "%02d", index); | |
613 | strncat(lpath, digit, 3); | |
614 | } | |
d3b3ab85 | 615 | } else { |
62e76326 | 616 | xstrncpy(lpath, path, SQUID_MAXPATHLEN - 64); |
617 | strcat(lpath, "/swap.state"); | |
d3b3ab85 | 618 | } |
62e76326 | 619 | |
d3b3ab85 | 620 | if (ext) |
62e76326 | 621 | strncat(lpath, ext, 16); |
622 | ||
d3b3ab85 | 623 | return lpath; |
624 | } | |
625 | ||
626 | void | |
627 | UFSSwapDir::openLog() | |
628 | { | |
629 | char *logPath; | |
630 | logPath = logFile(); | |
631 | swaplog_fd = file_open(logPath, O_WRONLY | O_CREAT | O_BINARY); | |
62e76326 | 632 | |
d3b3ab85 | 633 | if (swaplog_fd < 0) { |
bf8fe701 | 634 | debugs(50, 1, "" << logPath << ": " << xstrerror()); |
62e76326 | 635 | fatal("commonUfsDirOpenSwapLog: Failed to open swap log."); |
d3b3ab85 | 636 | } |
62e76326 | 637 | |
bf8fe701 | 638 | debugs(50, 3, "Cache Dir #" << index << " log opened on FD " << swaplog_fd); |
62e76326 | 639 | |
d3b3ab85 | 640 | if (0 == NumberOfUFSDirs) |
62e76326 | 641 | assert(NULL == UFSDirToGlobalDirMapping); |
642 | ||
d3b3ab85 | 643 | ++NumberOfUFSDirs; |
62e76326 | 644 | |
d3b3ab85 | 645 | assert(NumberOfUFSDirs <= Config.cacheSwap.n_configured); |
646 | } | |
647 | ||
648 | void | |
649 | UFSSwapDir::closeLog() | |
650 | { | |
651 | if (swaplog_fd < 0) /* not open */ | |
62e76326 | 652 | return; |
653 | ||
d3b3ab85 | 654 | file_close(swaplog_fd); |
62e76326 | 655 | |
bf8fe701 | 656 | debugs(47, 3, "Cache Dir #" << index << " log closed on FD " << swaplog_fd); |
62e76326 | 657 | |
d3b3ab85 | 658 | swaplog_fd = -1; |
62e76326 | 659 | |
59b2d47f | 660 | --NumberOfUFSDirs; |
62e76326 | 661 | |
d3b3ab85 | 662 | assert(NumberOfUFSDirs >= 0); |
62e76326 | 663 | |
d3b3ab85 | 664 | if (0 == NumberOfUFSDirs) |
62e76326 | 665 | safe_free(UFSDirToGlobalDirMapping); |
d3b3ab85 | 666 | } |
667 | ||
668 | bool | |
669 | UFSSwapDir::validL1(int anInt) const | |
670 | { | |
671 | return anInt < l1; | |
672 | } | |
673 | ||
674 | bool | |
675 | UFSSwapDir::validL2(int anInt) const | |
676 | { | |
677 | return anInt < l2; | |
678 | } | |
679 | ||
680 | /* Add a new object to the cache with empty memory copy and pointer to disk | |
681 | * use to rebuild store from disk. */ | |
682 | StoreEntry * | |
683 | UFSSwapDir::addDiskRestore(const cache_key * key, | |
62e76326 | 684 | sfileno file_number, |
47f6e231 | 685 | uint64_t swap_file_sz, |
62e76326 | 686 | time_t expires, |
687 | time_t timestamp, | |
688 | time_t lastref, | |
689 | time_t lastmod, | |
690 | u_int32_t refcount, | |
691 | u_int16_t flags, | |
692 | int clean) | |
d3b3ab85 | 693 | { |
694 | StoreEntry *e = NULL; | |
bf8fe701 | 695 | debugs(47, 5, "commonUfsAddDiskRestore: " << storeKeyText(key) << |
696 | ", fileno="<< std::setfill('0') << std::hex << std::uppercase << std::setw(8) << file_number); | |
62e76326 | 697 | /* if you call this you'd better be sure file_number is not |
d3b3ab85 | 698 | * already in use! */ |
c8f4eac4 | 699 | e = new StoreEntry(); |
d3b3ab85 | 700 | e->store_status = STORE_OK; |
3900307b | 701 | e->setMemStatus(NOT_IN_MEMORY); |
d3b3ab85 | 702 | e->swap_status = SWAPOUT_DONE; |
703 | e->swap_filen = file_number; | |
704 | e->swap_dirn = index; | |
705 | e->swap_file_sz = swap_file_sz; | |
706 | e->lock_count = 0; | |
707 | e->lastref = lastref; | |
708 | e->timestamp = timestamp; | |
709 | e->expires = expires; | |
710 | e->lastmod = lastmod; | |
711 | e->refcount = refcount; | |
712 | e->flags = flags; | |
713 | EBIT_SET(e->flags, ENTRY_CACHABLE); | |
714 | EBIT_CLR(e->flags, RELEASE_REQUEST); | |
715 | EBIT_CLR(e->flags, KEY_PRIVATE); | |
716 | e->ping_status = PING_NONE; | |
717 | EBIT_CLR(e->flags, ENTRY_VALIDATED); | |
718 | mapBitSet(e->swap_filen); | |
3900307b | 719 | e->hashInsert(key); /* do it after we clear KEY_PRIVATE */ |
d3b3ab85 | 720 | replacementAdd (e); |
721 | return e; | |
722 | } | |
723 | ||
724 | void | |
725 | UFSSwapDir::rebuild() | |
726 | { | |
bef81ea5 | 727 | ++StoreController::store_dirs_rebuilding; |
c8f4eac4 | 728 | eventAdd("storeRebuild", RebuildState::RebuildStep, new RebuildState(this), 0.0, 1); |
d3b3ab85 | 729 | } |
730 | ||
731 | void | |
732 | UFSSwapDir::closeTmpSwapLog() | |
733 | { | |
734 | char *swaplog_path = xstrdup(logFile(NULL)); | |
735 | char *new_path = xstrdup(logFile(".new")); | |
736 | int fd; | |
737 | file_close(swaplog_fd); | |
62e76326 | 738 | |
d3b3ab85 | 739 | if (xrename(new_path, swaplog_path) < 0) { |
62e76326 | 740 | fatal("commonUfsDirCloseTmpSwapLog: rename failed"); |
d3b3ab85 | 741 | } |
62e76326 | 742 | |
d3b3ab85 | 743 | fd = file_open(swaplog_path, O_WRONLY | O_CREAT | O_BINARY); |
62e76326 | 744 | |
d3b3ab85 | 745 | if (fd < 0) { |
bf8fe701 | 746 | debugs(50, 1, "" << swaplog_path << ": " << xstrerror()); |
62e76326 | 747 | fatal("commonUfsDirCloseTmpSwapLog: Failed to open swap log."); |
d3b3ab85 | 748 | } |
62e76326 | 749 | |
d3b3ab85 | 750 | safe_free(swaplog_path); |
751 | safe_free(new_path); | |
752 | swaplog_fd = fd; | |
bf8fe701 | 753 | debugs(47, 3, "Cache Dir #" << index << " log opened on FD " << fd); |
d3b3ab85 | 754 | } |
755 | ||
47f6e231 | 756 | static void |
757 | FreeHeader(void *address) | |
758 | { | |
759 | StoreSwapLogHeader *anObject = static_cast <StoreSwapLogHeader *>(address); | |
760 | delete anObject; | |
761 | } | |
762 | ||
d3b3ab85 | 763 | FILE * |
764 | UFSSwapDir::openTmpSwapLog(int *clean_flag, int *zero_flag) | |
765 | { | |
766 | char *swaplog_path = xstrdup(logFile(NULL)); | |
767 | char *clean_path = xstrdup(logFile(".last-clean")); | |
768 | char *new_path = xstrdup(logFile(".new")); | |
62e76326 | 769 | |
d3b3ab85 | 770 | struct stat log_sb; |
62e76326 | 771 | |
d3b3ab85 | 772 | struct stat clean_sb; |
773 | FILE *fp; | |
774 | int fd; | |
47f6e231 | 775 | StoreSwapLogHeader *head; |
62e76326 | 776 | |
c8f4eac4 | 777 | if (::stat(swaplog_path, &log_sb) < 0) { |
bf8fe701 | 778 | debugs(47, 1, "Cache Dir #" << index << ": No log file"); |
62e76326 | 779 | safe_free(swaplog_path); |
780 | safe_free(clean_path); | |
781 | safe_free(new_path); | |
782 | return NULL; | |
d3b3ab85 | 783 | } |
62e76326 | 784 | |
d3b3ab85 | 785 | *zero_flag = log_sb.st_size == 0 ? 1 : 0; |
786 | /* close the existing write-only FD */ | |
62e76326 | 787 | |
d3b3ab85 | 788 | if (swaplog_fd >= 0) |
62e76326 | 789 | file_close(swaplog_fd); |
790 | ||
d3b3ab85 | 791 | /* open a write-only FD for the new log */ |
792 | fd = file_open(new_path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY); | |
47f6e231 | 793 | |
d3b3ab85 | 794 | if (fd < 0) { |
bf8fe701 | 795 | debugs(50, 1, "" << new_path << ": " << xstrerror()); |
62e76326 | 796 | fatal("storeDirOpenTmpSwapLog: Failed to open swap log."); |
d3b3ab85 | 797 | } |
47f6e231 | 798 | |
d3b3ab85 | 799 | swaplog_fd = fd; |
47f6e231 | 800 | |
801 | head = new StoreSwapLogHeader; | |
802 | ||
803 | file_write(swaplog_fd, -1, head, head->record_size, | |
804 | NULL, NULL, FreeHeader); | |
805 | ||
d3b3ab85 | 806 | /* open a read-only stream of the old log */ |
807 | fp = fopen(swaplog_path, "rb"); | |
62e76326 | 808 | |
d3b3ab85 | 809 | if (fp == NULL) { |
bf8fe701 | 810 | debugs(50, 0, "" << swaplog_path << ": " << xstrerror()); |
62e76326 | 811 | fatal("Failed to open swap log for reading"); |
d3b3ab85 | 812 | } |
62e76326 | 813 | |
d3b3ab85 | 814 | memset(&clean_sb, '\0', sizeof(struct stat)); |
62e76326 | 815 | |
c8f4eac4 | 816 | if (::stat(clean_path, &clean_sb) < 0) |
62e76326 | 817 | *clean_flag = 0; |
d3b3ab85 | 818 | else if (clean_sb.st_mtime < log_sb.st_mtime) |
62e76326 | 819 | *clean_flag = 0; |
d3b3ab85 | 820 | else |
62e76326 | 821 | *clean_flag = 1; |
822 | ||
d3b3ab85 | 823 | safeunlink(clean_path, 1); |
62e76326 | 824 | |
d3b3ab85 | 825 | safe_free(swaplog_path); |
62e76326 | 826 | |
d3b3ab85 | 827 | safe_free(clean_path); |
62e76326 | 828 | |
d3b3ab85 | 829 | safe_free(new_path); |
62e76326 | 830 | |
d3b3ab85 | 831 | return fp; |
832 | } | |
833 | ||
62e76326 | 834 | class UFSCleanLog : public SwapDir::CleanLog |
835 | { | |
836 | ||
837 | public: | |
d3b3ab85 | 838 | UFSCleanLog(SwapDir *); |
839 | virtual const StoreEntry *nextEntry(); | |
840 | virtual void write(StoreEntry const &); | |
841 | char *cur; | |
842 | char *newLog; | |
843 | char *cln; | |
844 | char *outbuf; | |
845 | off_t outbuf_offset; | |
846 | int fd; | |
847 | RemovalPolicyWalker *walker; | |
848 | SwapDir *sd; | |
849 | }; | |
850 | ||
851 | #define CLEAN_BUF_SZ 16384 | |
852 | ||
d3b3ab85 | 853 | |
854 | UFSCleanLog::UFSCleanLog(SwapDir *aSwapDir) : cur(NULL),newLog(NULL),cln(NULL),outbuf(NULL), | |
62e76326 | 855 | outbuf_offset(0), fd(-1),walker(NULL), sd(aSwapDir) |
856 | {} | |
d3b3ab85 | 857 | |
59b2d47f | 858 | /* |
859 | * Begin the process to write clean cache state. For AUFS this means | |
860 | * opening some log files and allocating write buffers. Return 0 if | |
861 | * we succeed, and assign the 'func' and 'data' return pointers. | |
862 | */ | |
d3b3ab85 | 863 | int |
864 | UFSSwapDir::writeCleanStart() | |
865 | { | |
866 | UFSCleanLog *state = new UFSCleanLog(this); | |
47f6e231 | 867 | StoreSwapLogHeader header; |
d3b3ab85 | 868 | #if HAVE_FCHMOD |
62e76326 | 869 | |
d3b3ab85 | 870 | struct stat sb; |
871 | #endif | |
62e76326 | 872 | |
d3b3ab85 | 873 | cleanLog = NULL; |
874 | state->newLog = xstrdup(logFile(".clean")); | |
875 | state->fd = file_open(state->newLog, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY); | |
62e76326 | 876 | |
d3b3ab85 | 877 | if (state->fd < 0) { |
62e76326 | 878 | xfree(state->newLog); |
879 | delete state; | |
880 | return -1; | |
d3b3ab85 | 881 | } |
62e76326 | 882 | |
d3b3ab85 | 883 | state->cur = xstrdup(logFile(NULL)); |
884 | state->cln = xstrdup(logFile(".last-clean")); | |
885 | state->outbuf = (char *)xcalloc(CLEAN_BUF_SZ, 1); | |
886 | state->outbuf_offset = 0; | |
47f6e231 | 887 | /*copy the header */ |
888 | xmemcpy(state->outbuf, &header, sizeof(StoreSwapLogHeader)); | |
889 | state->outbuf_offset += header.record_size; | |
890 | ||
d3b3ab85 | 891 | state->walker = repl->WalkInit(repl); |
892 | ::unlink(state->cln); | |
bf8fe701 | 893 | debugs(47, 3, "storeDirWriteCleanLogs: opened " << state->newLog << ", FD " << state->fd); |
d3b3ab85 | 894 | #if HAVE_FCHMOD |
62e76326 | 895 | |
c8f4eac4 | 896 | if (::stat(state->cur, &sb) == 0) |
62e76326 | 897 | fchmod(state->fd, sb.st_mode); |
898 | ||
d3b3ab85 | 899 | #endif |
47f6e231 | 900 | |
62e76326 | 901 | |
d3b3ab85 | 902 | cleanLog = state; |
903 | return 0; | |
904 | } | |
905 | ||
906 | /* | |
907 | * Get the next entry that is a candidate for clean log writing | |
908 | */ | |
909 | const StoreEntry * | |
910 | UFSCleanLog::nextEntry() | |
911 | { | |
912 | const StoreEntry *entry = NULL; | |
62e76326 | 913 | |
d3b3ab85 | 914 | if (walker) |
62e76326 | 915 | entry = walker->Next(walker); |
916 | ||
d3b3ab85 | 917 | return entry; |
918 | } | |
919 | ||
920 | /* | |
921 | * "write" an entry to the clean log file. | |
922 | */ | |
923 | void | |
924 | UFSCleanLog::write(StoreEntry const &e) | |
925 | { | |
51ee7c82 | 926 | StoreSwapLogData s; |
927 | static size_t ss = sizeof(StoreSwapLogData); | |
d3b3ab85 | 928 | s.op = (char) SWAP_LOG_ADD; |
929 | s.swap_filen = e.swap_filen; | |
930 | s.timestamp = e.timestamp; | |
931 | s.lastref = e.lastref; | |
932 | s.expires = e.expires; | |
933 | s.lastmod = e.lastmod; | |
934 | s.swap_file_sz = e.swap_file_sz; | |
935 | s.refcount = e.refcount; | |
936 | s.flags = e.flags; | |
937 | xmemcpy(&s.key, e.key, MD5_DIGEST_CHARS); | |
78fe982f | 938 | xmemcpy(outbuf + outbuf_offset, &s, ss); |
939 | outbuf_offset += ss; | |
d3b3ab85 | 940 | /* buffered write */ |
62e76326 | 941 | |
e79ee799 | 942 | if (outbuf_offset + ss >= CLEAN_BUF_SZ) { |
78fe982f | 943 | if (FD_WRITE_METHOD(fd, outbuf, outbuf_offset) < 0) { |
944 | /* XXX This error handling should probably move up to the caller */ | |
bf8fe701 | 945 | debugs(50, 0, "storeDirWriteCleanLogs: " << newLog << ": write: " << xstrerror()); |
946 | debugs(50, 0, "storeDirWriteCleanLogs: Current swap logfile not replaced."); | |
78fe982f | 947 | file_close(fd); |
948 | fd = -1; | |
949 | unlink(newLog); | |
62e76326 | 950 | sd->cleanLog = NULL; |
78fe982f | 951 | delete this; |
62e76326 | 952 | return; |
953 | } | |
954 | ||
78fe982f | 955 | outbuf_offset = 0; |
d3b3ab85 | 956 | } |
957 | } | |
958 | ||
959 | void | |
960 | UFSSwapDir::writeCleanDone() | |
961 | { | |
962 | UFSCleanLog *state = (UFSCleanLog *)cleanLog; | |
963 | int fd; | |
62e76326 | 964 | |
d3b3ab85 | 965 | if (NULL == state) |
62e76326 | 966 | return; |
967 | ||
d3b3ab85 | 968 | if (state->fd < 0) |
62e76326 | 969 | return; |
970 | ||
d3b3ab85 | 971 | state->walker->Done(state->walker); |
62e76326 | 972 | |
d3b3ab85 | 973 | if (FD_WRITE_METHOD(state->fd, state->outbuf, state->outbuf_offset) < 0) { |
bf8fe701 | 974 | debugs(50, 0, "storeDirWriteCleanLogs: " << state->newLog << ": write: " << xstrerror()); |
975 | debugs(50, 0, "storeDirWriteCleanLogs: Current swap logfile not replaced."); | |
62e76326 | 976 | file_close(state->fd); |
977 | state->fd = -1; | |
978 | ::unlink(state->newLog); | |
d3b3ab85 | 979 | } |
62e76326 | 980 | |
d3b3ab85 | 981 | safe_free(state->outbuf); |
982 | /* | |
983 | * You can't rename open files on Microsoft "operating systems" | |
984 | * so we have to close before renaming. | |
985 | */ | |
986 | closeLog(); | |
987 | /* save the fd value for a later test */ | |
988 | fd = state->fd; | |
989 | /* rename */ | |
62e76326 | 990 | |
d3b3ab85 | 991 | if (state->fd >= 0) { |
ec4daaa5 | 992 | #if defined(_SQUID_OS2_) || defined (_SQUID_WIN32_) |
62e76326 | 993 | file_close(state->fd); |
994 | state->fd = -1; | |
995 | ||
d3b3ab85 | 996 | #endif |
62e76326 | 997 | |
998 | xrename(state->newLog, state->cur); | |
d3b3ab85 | 999 | } |
62e76326 | 1000 | |
d3b3ab85 | 1001 | /* touch a timestamp file if we're not still validating */ |
bef81ea5 | 1002 | if (StoreController::store_dirs_rebuilding) |
62e76326 | 1003 | (void) 0; |
d3b3ab85 | 1004 | else if (fd < 0) |
62e76326 | 1005 | (void) 0; |
d3b3ab85 | 1006 | else |
62e76326 | 1007 | file_close(file_open(state->cln, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY)); |
1008 | ||
d3b3ab85 | 1009 | /* close */ |
1010 | safe_free(state->cur); | |
62e76326 | 1011 | |
d3b3ab85 | 1012 | safe_free(state->newLog); |
62e76326 | 1013 | |
d3b3ab85 | 1014 | safe_free(state->cln); |
62e76326 | 1015 | |
d3b3ab85 | 1016 | if (state->fd >= 0) |
62e76326 | 1017 | file_close(state->fd); |
1018 | ||
d3b3ab85 | 1019 | state->fd = -1; |
62e76326 | 1020 | |
d3b3ab85 | 1021 | delete state; |
62e76326 | 1022 | |
d3b3ab85 | 1023 | cleanLog = NULL; |
1024 | } | |
1025 | ||
061c7171 | 1026 | static void |
1027 | FreeObject(void *address) | |
1028 | { | |
1029 | StoreSwapLogData *anObject = static_cast <StoreSwapLogData *>(address); | |
1030 | delete anObject; | |
1031 | } | |
1032 | ||
d3b3ab85 | 1033 | void |
1034 | UFSSwapDir::logEntry(const StoreEntry & e, int op) const | |
1035 | { | |
51ee7c82 | 1036 | StoreSwapLogData *s = new StoreSwapLogData; |
d3b3ab85 | 1037 | s->op = (char) op; |
1038 | s->swap_filen = e.swap_filen; | |
1039 | s->timestamp = e.timestamp; | |
1040 | s->lastref = e.lastref; | |
1041 | s->expires = e.expires; | |
1042 | s->lastmod = e.lastmod; | |
1043 | s->swap_file_sz = e.swap_file_sz; | |
1044 | s->refcount = e.refcount; | |
1045 | s->flags = e.flags; | |
1046 | xmemcpy(s->key, e.key, MD5_DIGEST_CHARS); | |
1047 | file_write(swaplog_fd, | |
62e76326 | 1048 | -1, |
1049 | s, | |
51ee7c82 | 1050 | sizeof(StoreSwapLogData), |
62e76326 | 1051 | NULL, |
1052 | NULL, | |
061c7171 | 1053 | FreeObject); |
d3b3ab85 | 1054 | } |
1055 | ||
1056 | static QS rev_int_sort; | |
1057 | static int | |
1058 | rev_int_sort(const void *A, const void *B) | |
1059 | { | |
1060 | const int *i1 = (const int *)A; | |
1061 | const int *i2 = (const int *)B; | |
1062 | return *i2 - *i1; | |
1063 | } | |
1064 | ||
1065 | int | |
1066 | UFSSwapDir::DirClean(int swap_index) | |
1067 | { | |
bef81ea5 | 1068 | DIR *dir_pointer = NULL; |
62e76326 | 1069 | |
d3b3ab85 | 1070 | struct dirent *de = NULL; |
1071 | LOCAL_ARRAY(char, p1, MAXPATHLEN + 1); | |
1072 | LOCAL_ARRAY(char, p2, MAXPATHLEN + 1); | |
62e76326 | 1073 | |
d3b3ab85 | 1074 | int files[20]; |
1075 | int swapfileno; | |
1076 | int fn; /* same as swapfileno, but with dirn bits set */ | |
1077 | int n = 0; | |
1078 | int k = 0; | |
1079 | int N0, N1, N2; | |
1080 | int D0, D1, D2; | |
1081 | UFSSwapDir *SD; | |
1082 | N0 = NumberOfUFSDirs; | |
1083 | D0 = UFSDirToGlobalDirMapping[swap_index % N0]; | |
1084 | SD = dynamic_cast<UFSSwapDir *>(INDEXSD(D0)); | |
1085 | assert (SD); | |
1086 | N1 = SD->l1; | |
1087 | D1 = (swap_index / N0) % N1; | |
1088 | N2 = SD->l2; | |
1089 | D2 = ((swap_index / N0) / N1) % N2; | |
1090 | snprintf(p1, SQUID_MAXPATHLEN, "%s/%02X/%02X", | |
62e76326 | 1091 | SD->path, D1, D2); |
bf8fe701 | 1092 | debugs(36, 3, "storeDirClean: Cleaning directory " << p1); |
bef81ea5 | 1093 | dir_pointer = opendir(p1); |
62e76326 | 1094 | |
bef81ea5 | 1095 | if (dir_pointer == NULL) { |
62e76326 | 1096 | if (errno == ENOENT) { |
bf8fe701 | 1097 | debugs(36, 0, "storeDirClean: WARNING: Creating " << p1); |
d3b3ab85 | 1098 | #ifdef _SQUID_MSWIN_ |
62e76326 | 1099 | |
1100 | if (mkdir(p1) == 0) | |
d3b3ab85 | 1101 | #else |
62e76326 | 1102 | |
1103 | if (mkdir(p1, 0777) == 0) | |
d3b3ab85 | 1104 | #endif |
62e76326 | 1105 | |
1106 | return 0; | |
1107 | } | |
1108 | ||
bf8fe701 | 1109 | debugs(50, 0, "storeDirClean: " << p1 << ": " << xstrerror()); |
62e76326 | 1110 | safeunlink(p1, 1); |
1111 | return 0; | |
d3b3ab85 | 1112 | } |
62e76326 | 1113 | |
bef81ea5 | 1114 | while ((de = readdir(dir_pointer)) != NULL && k < 20) { |
62e76326 | 1115 | if (sscanf(de->d_name, "%X", &swapfileno) != 1) |
1116 | continue; | |
1117 | ||
1118 | fn = swapfileno; /* XXX should remove this cruft ! */ | |
1119 | ||
1120 | if (SD->validFileno(fn, 1)) | |
1121 | if (SD->mapBitTest(fn)) | |
1122 | if (UFSSwapDir::FilenoBelongsHere(fn, D0, D1, D2)) | |
1123 | continue; | |
1124 | ||
62e76326 | 1125 | files[k++] = swapfileno; |
d3b3ab85 | 1126 | } |
62e76326 | 1127 | |
bef81ea5 | 1128 | closedir(dir_pointer); |
62e76326 | 1129 | |
d3b3ab85 | 1130 | if (k == 0) |
62e76326 | 1131 | return 0; |
1132 | ||
d3b3ab85 | 1133 | qsort(files, k, sizeof(int), rev_int_sort); |
62e76326 | 1134 | |
d3b3ab85 | 1135 | if (k > 10) |
62e76326 | 1136 | k = 10; |
1137 | ||
d3b3ab85 | 1138 | for (n = 0; n < k; n++) { |
bf8fe701 | 1139 | debugs(36, 3, "storeDirClean: Cleaning file "<< std::setfill('0') << std::hex << std::uppercase << std::setw(8) << files[n]); |
62e76326 | 1140 | snprintf(p2, MAXPATHLEN + 1, "%s/%08X", p1, files[n]); |
62e76326 | 1141 | safeunlink(p2, 0); |
62e76326 | 1142 | statCounter.swap.files_cleaned++; |
d3b3ab85 | 1143 | } |
62e76326 | 1144 | |
bf8fe701 | 1145 | debugs(36, 3, "Cleaned " << k << " unused files from " << p1); |
d3b3ab85 | 1146 | return k; |
1147 | } | |
1148 | ||
1149 | void | |
1150 | UFSSwapDir::CleanEvent(void *unused) | |
1151 | { | |
1152 | static int swap_index = 0; | |
1153 | int i; | |
1154 | int j = 0; | |
1155 | int n = 0; | |
1156 | /* | |
1157 | * Assert that there are UFS cache_dirs configured, otherwise | |
1158 | * we should never be called. | |
1159 | */ | |
1160 | assert(NumberOfUFSDirs); | |
62e76326 | 1161 | |
d3b3ab85 | 1162 | if (NULL == UFSDirToGlobalDirMapping) { |
62e76326 | 1163 | SwapDir *sd; |
1164 | /* | |
1165 | * Initialize the little array that translates UFS cache_dir | |
1166 | * number into the Config.cacheSwap.swapDirs array index. | |
1167 | */ | |
1168 | UFSDirToGlobalDirMapping = (int *)xcalloc(NumberOfUFSDirs, sizeof(*UFSDirToGlobalDirMapping)); | |
1169 | ||
1170 | for (i = 0, n = 0; i < Config.cacheSwap.n_configured; i++) { | |
c8f4eac4 | 1171 | /* This is bogus, the controller should just clean each instance once */ |
1172 | sd = dynamic_cast <SwapDir *>(INDEXSD(i)); | |
62e76326 | 1173 | |
1174 | if (!UFSSwapDir::IsUFSDir(sd)) | |
1175 | continue; | |
1176 | ||
1177 | UFSSwapDir *usd = dynamic_cast<UFSSwapDir *>(sd); | |
1178 | ||
1179 | assert (usd); | |
1180 | ||
1181 | UFSDirToGlobalDirMapping[n++] = i; | |
1182 | ||
1183 | j += (usd->l1 * usd->l2); | |
1184 | } | |
1185 | ||
1186 | assert(n == NumberOfUFSDirs); | |
1187 | /* | |
1188 | * Start the commonUfsDirClean() swap_index with a random | |
1189 | * value. j equals the total number of UFS level 2 | |
1190 | * swap directories | |
1191 | */ | |
1192 | swap_index = (int) (squid_random() % j); | |
d3b3ab85 | 1193 | } |
62e76326 | 1194 | |
bef81ea5 | 1195 | /* if the rebuild is finished, start cleaning directories. */ |
1196 | if (0 == StoreController::store_dirs_rebuilding) { | |
62e76326 | 1197 | n = DirClean(swap_index); |
1198 | swap_index++; | |
d3b3ab85 | 1199 | } |
62e76326 | 1200 | |
d3b3ab85 | 1201 | eventAdd("storeDirClean", CleanEvent, NULL, |
62e76326 | 1202 | 15.0 * exp(-0.25 * n), 1); |
d3b3ab85 | 1203 | } |
1204 | ||
1205 | int | |
1206 | UFSSwapDir::IsUFSDir(SwapDir * sd) | |
1207 | { | |
1208 | UFSSwapDir *mySD = dynamic_cast<UFSSwapDir *>(sd); | |
1209 | return mySD ? 1 : 0 ; | |
1210 | } | |
1211 | ||
1212 | /* | |
1213 | * Does swapfile number 'fn' belong in cachedir #F0, | |
1214 | * level1 dir #F1, level2 dir #F2? | |
1215 | * XXX: this is broken - it assumes all cache dirs use the same | |
1216 | * l1 and l2 scheme. -RBC 20021215. Partial fix is in place - | |
1217 | * if not UFSSwapDir return 0; | |
1218 | */ | |
1219 | int | |
1220 | UFSSwapDir::FilenoBelongsHere(int fn, int F0, int F1, int F2) | |
1221 | { | |
1222 | int D1, D2; | |
1223 | int L1, L2; | |
1224 | int filn = fn; | |
1225 | assert(F0 < Config.cacheSwap.n_configured); | |
c8f4eac4 | 1226 | assert (UFSSwapDir::IsUFSDir (dynamic_cast<SwapDir *>(INDEXSD(F0)))); |
d3b3ab85 | 1227 | UFSSwapDir *sd = dynamic_cast<UFSSwapDir *>(INDEXSD(F0)); |
62e76326 | 1228 | |
d3b3ab85 | 1229 | if (!sd) |
62e76326 | 1230 | return 0; |
1231 | ||
d3b3ab85 | 1232 | L1 = sd->l1; |
62e76326 | 1233 | |
d3b3ab85 | 1234 | L2 = sd->l2; |
62e76326 | 1235 | |
d3b3ab85 | 1236 | D1 = ((filn / L2) / L2) % L1; |
62e76326 | 1237 | |
d3b3ab85 | 1238 | if (F1 != D1) |
62e76326 | 1239 | return 0; |
1240 | ||
d3b3ab85 | 1241 | D2 = (filn / L2) % L2; |
62e76326 | 1242 | |
d3b3ab85 | 1243 | if (F2 != D2) |
62e76326 | 1244 | return 0; |
1245 | ||
d3b3ab85 | 1246 | return 1; |
1247 | } | |
1248 | ||
bef81ea5 | 1249 | |
d3b3ab85 | 1250 | int |
1251 | UFSSwapDir::validFileno(sfileno filn, int flag) const | |
1252 | { | |
1253 | if (filn < 0) | |
62e76326 | 1254 | return 0; |
1255 | ||
d3b3ab85 | 1256 | /* |
1257 | * If flag is set it means out-of-range file number should | |
1258 | * be considered invalid. | |
1259 | */ | |
1260 | if (flag) | |
62e76326 | 1261 | if (filn > map->max_n_files) |
1262 | return 0; | |
1263 | ||
d3b3ab85 | 1264 | return 1; |
1265 | } | |
1266 | ||
59b2d47f | 1267 | |
1268 | ||
d3b3ab85 | 1269 | /* |
1270 | * UFSSwapDir::unlinkFile | |
1271 | * | |
1272 | * This routine unlinks a file and pulls it out of the bitmap. | |
1273 | * It used to be in commonUfsUnlink(), however an interface change | |
1274 | * forced this bit of code here. Eeek. | |
1275 | */ | |
1276 | void | |
1277 | UFSSwapDir::unlinkFile(sfileno f) | |
1278 | { | |
bf8fe701 | 1279 | debugs(79, 3, "UFSSwapDir::unlinkFile: unlinking fileno " << std::setfill('0') << |
1280 | std::hex << std::uppercase << std::setw(8) << f << " '" << | |
1281 | fullPath(f,NULL) << "'"); | |
d3b3ab85 | 1282 | /* commonUfsDirMapBitReset(this, f); */ |
59b2d47f | 1283 | IO->unlinkFile(fullPath(f,NULL)); |
1284 | } | |
1285 | ||
1286 | void | |
1287 | UFSSwapDir::unlink(StoreEntry & e) | |
1288 | { | |
bf8fe701 | 1289 | debugs(79, 3, "storeUfsUnlink: dirno " << index << ", fileno "<< |
1290 | std::setfill('0') << std::hex << std::uppercase << std::setw(8) << e.swap_filen); | |
59b2d47f | 1291 | replacementRemove(&e); |
1292 | mapBitReset(e.swap_filen); | |
1293 | UFSSwapDir::unlinkFile(e.swap_filen); | |
d3b3ab85 | 1294 | } |
1295 | ||
1296 | /* | |
1297 | * Add and remove the given StoreEntry from the replacement policy in | |
1298 | * use. | |
1299 | */ | |
1300 | ||
1301 | void | |
1302 | UFSSwapDir::replacementAdd(StoreEntry * e) | |
1303 | { | |
bf8fe701 | 1304 | debugs(47, 4, "UFSSwapDir::replacementAdd: added node " << e << " to dir " << index); |
d3b3ab85 | 1305 | repl->Add(repl, e, &e->repl); |
1306 | } | |
1307 | ||
1308 | ||
1309 | void | |
1310 | UFSSwapDir::replacementRemove(StoreEntry * e) | |
1311 | { | |
c8f4eac4 | 1312 | StorePointer SD; |
62e76326 | 1313 | |
d3b3ab85 | 1314 | if (e->swap_dirn < 0) |
62e76326 | 1315 | return; |
1316 | ||
d3b3ab85 | 1317 | SD = INDEXSD(e->swap_dirn); |
62e76326 | 1318 | |
c8f4eac4 | 1319 | assert (dynamic_cast<UFSSwapDir *>(SD.getRaw()) == this); |
62e76326 | 1320 | |
bf8fe701 | 1321 | debugs(47, 4, "UFSSwapDir::replacementRemove: remove node " << e << " from dir " << index); |
62e76326 | 1322 | |
d3b3ab85 | 1323 | repl->Remove(repl, e, &e->repl); |
1324 | } | |
1325 | ||
1326 | void | |
1327 | UFSSwapDir::dump(StoreEntry & entry) const | |
1328 | { | |
1329 | storeAppendPrintf(&entry, " %d %d %d", | |
62e76326 | 1330 | max_size >> 10, |
1331 | l1, | |
1332 | l2); | |
59b2d47f | 1333 | dumpOptions(&entry); |
d3b3ab85 | 1334 | } |
1335 | ||
1336 | char * | |
1337 | UFSSwapDir::fullPath(sfileno filn, char *fullpath) const | |
1338 | { | |
1339 | LOCAL_ARRAY(char, fullfilename, SQUID_MAXPATHLEN); | |
1340 | int L1 = l1; | |
1341 | int L2 = l2; | |
62e76326 | 1342 | |
d3b3ab85 | 1343 | if (!fullpath) |
62e76326 | 1344 | fullpath = fullfilename; |
1345 | ||
d3b3ab85 | 1346 | fullpath[0] = '\0'; |
62e76326 | 1347 | |
d3b3ab85 | 1348 | snprintf(fullpath, SQUID_MAXPATHLEN, "%s/%02X/%02X/%08X", |
62e76326 | 1349 | path, |
1350 | ((filn / L2) / L2) % L1, | |
1351 | (filn / L2) % L2, | |
1352 | filn); | |
1353 | ||
d3b3ab85 | 1354 | return fullpath; |
1355 | } | |
59b2d47f | 1356 | |
1357 | int | |
1358 | UFSSwapDir::callback() | |
1359 | { | |
1360 | return IO->callback(); | |
1361 | } | |
1362 | ||
1363 | void | |
1364 | UFSSwapDir::sync() | |
1365 | { | |
1366 | IO->sync(); | |
1367 | } | |
c8f4eac4 | 1368 | |
1369 | StoreSearch * | |
30abd221 | 1370 | UFSSwapDir::search(String const url, HttpRequest *request) |
c8f4eac4 | 1371 | { |
1372 | if (url.size()) | |
1373 | fatal ("Cannot search by url yet\n"); | |
1374 | ||
1375 | return new StoreSearchUFS (this); | |
1376 | } | |
1377 | ||
1378 | CBDATA_CLASS_INIT(StoreSearchUFS); | |
1379 | StoreSearchUFS::StoreSearchUFS(RefCount<UFSSwapDir> aSwapDir) : sd(aSwapDir), walker (sd->repl->WalkInit(sd->repl)), current (NULL), _done (false) | |
1380 | {} | |
1381 | ||
1382 | /* do not link | |
1383 | StoreSearchUFS::StoreSearchUFS(StoreSearchUFS const &); | |
1384 | */ | |
1385 | ||
1386 | StoreSearchUFS::~StoreSearchUFS() | |
1387 | { | |
1388 | walker->Done(walker); | |
1389 | walker = NULL; | |
1390 | } | |
1391 | ||
1392 | void | |
1393 | StoreSearchUFS::next(void (callback)(void *cbdata), void *cbdata) | |
1394 | { | |
1395 | next(); | |
1396 | callback (cbdata); | |
1397 | } | |
1398 | ||
1399 | bool | |
1400 | StoreSearchUFS::next() | |
1401 | { | |
1402 | /* the walker API doesn't make sense. the store entries referred to are already readwrite | |
1403 | * from their hash table entries | |
1404 | */ | |
1405 | ||
1406 | if (walker) | |
1407 | current = const_cast<StoreEntry *>(walker->Next(walker)); | |
1408 | ||
1409 | if (current == NULL) | |
1410 | _done = true; | |
1411 | ||
1412 | return current != NULL; | |
1413 | } | |
1414 | ||
1415 | bool | |
1416 | StoreSearchUFS::error() const | |
1417 | { | |
1418 | return false; | |
1419 | } | |
1420 | ||
1421 | bool | |
1422 | StoreSearchUFS::isDone() const | |
1423 | { | |
1424 | return _done; | |
1425 | } | |
1426 | ||
1427 | StoreEntry * | |
1428 | StoreSearchUFS::currentItem() | |
1429 | { | |
1430 | return current; | |
1431 | } |