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Commit | Line | Data |
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cec736d2 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2011 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
cec736d2 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
cec736d2 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
cec736d2 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
cec736d2 | 20 | #include <errno.h> |
cec736d2 | 21 | #include <fcntl.h> |
11689d2a | 22 | #include <linux/fs.h> |
ac2e41f5 | 23 | #include <pthread.h> |
07630cea LP |
24 | #include <stddef.h> |
25 | #include <sys/mman.h> | |
26 | #include <sys/statvfs.h> | |
27 | #include <sys/uio.h> | |
28 | #include <unistd.h> | |
fb0951b0 | 29 | |
b5efdb8a | 30 | #include "alloc-util.h" |
f27a3864 | 31 | #include "btrfs-util.h" |
c8b3094d | 32 | #include "chattr-util.h" |
07630cea | 33 | #include "compress.h" |
3ffd4af2 | 34 | #include "fd-util.h" |
0284adc6 | 35 | #include "journal-authenticate.h" |
cec736d2 LP |
36 | #include "journal-def.h" |
37 | #include "journal-file.h" | |
38 | #include "lookup3.h" | |
6bedfcbb | 39 | #include "parse-util.h" |
5d1ce257 | 40 | #include "path-util.h" |
3df3e884 | 41 | #include "random-util.h" |
7a24f3bf | 42 | #include "sd-event.h" |
b58c888f | 43 | #include "set.h" |
07630cea | 44 | #include "string-util.h" |
4761fd0f | 45 | #include "strv.h" |
89a5a90c | 46 | #include "xattr-util.h" |
cec736d2 | 47 | |
4a92baf3 LP |
48 | #define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*sizeof(HashItem)) |
49 | #define DEFAULT_FIELD_HASH_TABLE_SIZE (333ULL*sizeof(HashItem)) | |
cec736d2 | 50 | |
be19b7df | 51 | #define COMPRESSION_SIZE_THRESHOLD (512ULL) |
807e17f0 | 52 | |
babfc091 | 53 | /* This is the minimum journal file size */ |
16098e93 | 54 | #define JOURNAL_FILE_SIZE_MIN (512ULL*1024ULL) /* 512 KiB */ |
babfc091 LP |
55 | |
56 | /* These are the lower and upper bounds if we deduce the max_use value | |
57 | * from the file system size */ | |
58 | #define DEFAULT_MAX_USE_LOWER (1ULL*1024ULL*1024ULL) /* 1 MiB */ | |
59 | #define DEFAULT_MAX_USE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
60 | ||
8580d1f7 LP |
61 | /* This is the default minimal use limit, how much we'll use even if keep_free suggests otherwise. */ |
62 | #define DEFAULT_MIN_USE (1ULL*1024ULL*1024ULL) /* 1 MiB */ | |
63 | ||
babfc091 | 64 | /* This is the upper bound if we deduce max_size from max_use */ |
71100051 | 65 | #define DEFAULT_MAX_SIZE_UPPER (128ULL*1024ULL*1024ULL) /* 128 MiB */ |
babfc091 LP |
66 | |
67 | /* This is the upper bound if we deduce the keep_free value from the | |
68 | * file system size */ | |
69 | #define DEFAULT_KEEP_FREE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
70 | ||
71 | /* This is the keep_free value when we can't determine the system | |
72 | * size */ | |
73 | #define DEFAULT_KEEP_FREE (1024ULL*1024ULL) /* 1 MB */ | |
74 | ||
8580d1f7 LP |
75 | /* This is the default maximum number of journal files to keep around. */ |
76 | #define DEFAULT_N_MAX_FILES (100) | |
77 | ||
dca6219e LP |
78 | /* n_data was the first entry we added after the initial file format design */ |
79 | #define HEADER_SIZE_MIN ALIGN64(offsetof(Header, n_data)) | |
cec736d2 | 80 | |
a4bcff5b LP |
81 | /* How many entries to keep in the entry array chain cache at max */ |
82 | #define CHAIN_CACHE_MAX 20 | |
83 | ||
a676e665 LP |
84 | /* How much to increase the journal file size at once each time we allocate something new. */ |
85 | #define FILE_SIZE_INCREASE (8ULL*1024ULL*1024ULL) /* 8MB */ | |
86 | ||
2678031a LP |
87 | /* Reread fstat() of the file for detecting deletions at least this often */ |
88 | #define LAST_STAT_REFRESH_USEC (5*USEC_PER_SEC) | |
89 | ||
fa6ac760 LP |
90 | /* The mmap context to use for the header we pick as one above the last defined typed */ |
91 | #define CONTEXT_HEADER _OBJECT_TYPE_MAX | |
92 | ||
ac2e41f5 VC |
93 | /* This may be called from a separate thread to prevent blocking the caller for the duration of fsync(). |
94 | * As a result we use atomic operations on f->offline_state for inter-thread communications with | |
95 | * journal_file_set_offline() and journal_file_set_online(). */ | |
96 | static void journal_file_set_offline_internal(JournalFile *f) { | |
26687bf8 | 97 | assert(f); |
ac2e41f5 VC |
98 | assert(f->fd >= 0); |
99 | assert(f->header); | |
100 | ||
101 | for (;;) { | |
102 | switch (f->offline_state) { | |
103 | case OFFLINE_CANCEL: | |
104 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_CANCEL, OFFLINE_DONE)) | |
105 | continue; | |
106 | return; | |
107 | ||
108 | case OFFLINE_AGAIN_FROM_SYNCING: | |
109 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_AGAIN_FROM_SYNCING, OFFLINE_SYNCING)) | |
110 | continue; | |
111 | break; | |
112 | ||
113 | case OFFLINE_AGAIN_FROM_OFFLINING: | |
114 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_AGAIN_FROM_OFFLINING, OFFLINE_SYNCING)) | |
115 | continue; | |
116 | break; | |
117 | ||
118 | case OFFLINE_SYNCING: | |
119 | (void) fsync(f->fd); | |
26687bf8 | 120 | |
ac2e41f5 VC |
121 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_SYNCING, OFFLINE_OFFLINING)) |
122 | continue; | |
26687bf8 | 123 | |
8eb85171 | 124 | f->header->state = f->archive ? STATE_ARCHIVED : STATE_OFFLINE; |
ac2e41f5 VC |
125 | (void) fsync(f->fd); |
126 | break; | |
127 | ||
128 | case OFFLINE_OFFLINING: | |
129 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_OFFLINING, OFFLINE_DONE)) | |
130 | continue; | |
131 | /* fall through */ | |
132 | ||
133 | case OFFLINE_DONE: | |
134 | return; | |
135 | ||
136 | case OFFLINE_JOINED: | |
137 | log_debug("OFFLINE_JOINED unexpected offline state for journal_file_set_offline_internal()"); | |
138 | return; | |
139 | } | |
140 | } | |
141 | } | |
142 | ||
143 | static void * journal_file_set_offline_thread(void *arg) { | |
144 | JournalFile *f = arg; | |
145 | ||
146 | journal_file_set_offline_internal(f); | |
147 | ||
148 | return NULL; | |
149 | } | |
150 | ||
151 | static int journal_file_set_offline_thread_join(JournalFile *f) { | |
152 | int r; | |
153 | ||
154 | assert(f); | |
155 | ||
156 | if (f->offline_state == OFFLINE_JOINED) | |
157 | return 0; | |
158 | ||
159 | r = pthread_join(f->offline_thread, NULL); | |
160 | if (r) | |
161 | return -r; | |
162 | ||
163 | f->offline_state = OFFLINE_JOINED; | |
26687bf8 | 164 | |
be7cdd8e | 165 | if (mmap_cache_got_sigbus(f->mmap, f->cache_fd)) |
fa6ac760 LP |
166 | return -EIO; |
167 | ||
ac2e41f5 VC |
168 | return 0; |
169 | } | |
26687bf8 | 170 | |
ac2e41f5 VC |
171 | /* Trigger a restart if the offline thread is mid-flight in a restartable state. */ |
172 | static bool journal_file_set_offline_try_restart(JournalFile *f) { | |
173 | for (;;) { | |
174 | switch (f->offline_state) { | |
175 | case OFFLINE_AGAIN_FROM_SYNCING: | |
176 | case OFFLINE_AGAIN_FROM_OFFLINING: | |
177 | return true; | |
178 | ||
179 | case OFFLINE_CANCEL: | |
180 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_CANCEL, OFFLINE_AGAIN_FROM_SYNCING)) | |
181 | continue; | |
182 | return true; | |
183 | ||
184 | case OFFLINE_SYNCING: | |
185 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_SYNCING, OFFLINE_AGAIN_FROM_SYNCING)) | |
186 | continue; | |
187 | return true; | |
188 | ||
189 | case OFFLINE_OFFLINING: | |
190 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_OFFLINING, OFFLINE_AGAIN_FROM_OFFLINING)) | |
191 | continue; | |
192 | return true; | |
26687bf8 OS |
193 | |
194 | default: | |
ac2e41f5 VC |
195 | return false; |
196 | } | |
26687bf8 OS |
197 | } |
198 | } | |
199 | ||
ac2e41f5 VC |
200 | /* Sets a journal offline. |
201 | * | |
202 | * If wait is false then an offline is dispatched in a separate thread for a | |
203 | * subsequent journal_file_set_offline() or journal_file_set_online() of the | |
204 | * same journal to synchronize with. | |
205 | * | |
206 | * If wait is true, then either an existing offline thread will be restarted | |
207 | * and joined, or if none exists the offline is simply performed in this | |
208 | * context without involving another thread. | |
209 | */ | |
210 | int journal_file_set_offline(JournalFile *f, bool wait) { | |
211 | bool restarted; | |
212 | int r; | |
213 | ||
26687bf8 OS |
214 | assert(f); |
215 | ||
216 | if (!f->writable) | |
217 | return -EPERM; | |
218 | ||
219 | if (!(f->fd >= 0 && f->header)) | |
220 | return -EINVAL; | |
221 | ||
b8f99e27 VC |
222 | /* An offlining journal is implicitly online and may modify f->header->state, |
223 | * we must also join any potentially lingering offline thread when not online. */ | |
224 | if (!journal_file_is_offlining(f) && f->header->state != STATE_ONLINE) | |
225 | return journal_file_set_offline_thread_join(f); | |
26687bf8 | 226 | |
ac2e41f5 VC |
227 | /* Restart an in-flight offline thread and wait if needed, or join a lingering done one. */ |
228 | restarted = journal_file_set_offline_try_restart(f); | |
229 | if ((restarted && wait) || !restarted) { | |
230 | r = journal_file_set_offline_thread_join(f); | |
231 | if (r < 0) | |
232 | return r; | |
233 | } | |
26687bf8 | 234 | |
ac2e41f5 VC |
235 | if (restarted) |
236 | return 0; | |
237 | ||
238 | /* Initiate a new offline. */ | |
239 | f->offline_state = OFFLINE_SYNCING; | |
fa6ac760 | 240 | |
ac2e41f5 VC |
241 | if (wait) /* Without using a thread if waiting. */ |
242 | journal_file_set_offline_internal(f); | |
243 | else { | |
244 | r = pthread_create(&f->offline_thread, NULL, journal_file_set_offline_thread, f); | |
ec9ffa2c VC |
245 | if (r > 0) { |
246 | f->offline_state = OFFLINE_JOINED; | |
ac2e41f5 | 247 | return -r; |
ec9ffa2c | 248 | } |
ac2e41f5 VC |
249 | } |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | static int journal_file_set_online(JournalFile *f) { | |
255 | bool joined = false; | |
256 | ||
257 | assert(f); | |
258 | ||
259 | if (!f->writable) | |
260 | return -EPERM; | |
261 | ||
262 | if (!(f->fd >= 0 && f->header)) | |
263 | return -EINVAL; | |
264 | ||
265 | while (!joined) { | |
266 | switch (f->offline_state) { | |
267 | case OFFLINE_JOINED: | |
268 | /* No offline thread, no need to wait. */ | |
269 | joined = true; | |
270 | break; | |
271 | ||
272 | case OFFLINE_SYNCING: | |
273 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_SYNCING, OFFLINE_CANCEL)) | |
274 | continue; | |
275 | /* Canceled syncing prior to offlining, no need to wait. */ | |
276 | break; | |
277 | ||
278 | case OFFLINE_AGAIN_FROM_SYNCING: | |
279 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_AGAIN_FROM_SYNCING, OFFLINE_CANCEL)) | |
280 | continue; | |
281 | /* Canceled restart from syncing, no need to wait. */ | |
282 | break; | |
283 | ||
284 | case OFFLINE_AGAIN_FROM_OFFLINING: | |
285 | if (!__sync_bool_compare_and_swap(&f->offline_state, OFFLINE_AGAIN_FROM_OFFLINING, OFFLINE_CANCEL)) | |
286 | continue; | |
287 | /* Canceled restart from offlining, must wait for offlining to complete however. */ | |
288 | ||
ec251fe7 | 289 | /* fall through */ |
ac2e41f5 VC |
290 | default: { |
291 | int r; | |
292 | ||
293 | r = journal_file_set_offline_thread_join(f); | |
294 | if (r < 0) | |
295 | return r; | |
296 | ||
297 | joined = true; | |
298 | break; | |
299 | } | |
300 | } | |
301 | } | |
26687bf8 | 302 | |
be7cdd8e | 303 | if (mmap_cache_got_sigbus(f->mmap, f->cache_fd)) |
fa6ac760 LP |
304 | return -EIO; |
305 | ||
ac2e41f5 VC |
306 | switch (f->header->state) { |
307 | case STATE_ONLINE: | |
308 | return 0; | |
26687bf8 | 309 | |
ac2e41f5 VC |
310 | case STATE_OFFLINE: |
311 | f->header->state = STATE_ONLINE; | |
312 | (void) fsync(f->fd); | |
313 | return 0; | |
314 | ||
315 | default: | |
316 | return -EINVAL; | |
317 | } | |
26687bf8 OS |
318 | } |
319 | ||
b58c888f VC |
320 | bool journal_file_is_offlining(JournalFile *f) { |
321 | assert(f); | |
322 | ||
323 | __sync_synchronize(); | |
324 | ||
325 | if (f->offline_state == OFFLINE_DONE || | |
326 | f->offline_state == OFFLINE_JOINED) | |
327 | return false; | |
328 | ||
329 | return true; | |
330 | } | |
331 | ||
804ae586 | 332 | JournalFile* journal_file_close(JournalFile *f) { |
de190aef | 333 | assert(f); |
cec736d2 | 334 | |
feb12d3e | 335 | #ifdef HAVE_GCRYPT |
b0af6f41 | 336 | /* Write the final tag */ |
43cd8794 FB |
337 | if (f->seal && f->writable) { |
338 | int r; | |
339 | ||
340 | r = journal_file_append_tag(f); | |
341 | if (r < 0) | |
342 | log_error_errno(r, "Failed to append tag when closing journal: %m"); | |
343 | } | |
feb12d3e | 344 | #endif |
b0af6f41 | 345 | |
7a24f3bf VC |
346 | if (f->post_change_timer) { |
347 | int enabled; | |
348 | ||
349 | if (sd_event_source_get_enabled(f->post_change_timer, &enabled) >= 0) | |
350 | if (enabled == SD_EVENT_ONESHOT) | |
351 | journal_file_post_change(f); | |
352 | ||
e167d7fd | 353 | (void) sd_event_source_set_enabled(f->post_change_timer, SD_EVENT_OFF); |
7a24f3bf VC |
354 | sd_event_source_unref(f->post_change_timer); |
355 | } | |
356 | ||
ac2e41f5 | 357 | journal_file_set_offline(f, true); |
cec736d2 | 358 | |
be7cdd8e VC |
359 | if (f->mmap && f->cache_fd) |
360 | mmap_cache_free_fd(f->mmap, f->cache_fd); | |
cec736d2 | 361 | |
11689d2a LP |
362 | if (f->fd >= 0 && f->defrag_on_close) { |
363 | ||
364 | /* Be friendly to btrfs: turn COW back on again now, | |
365 | * and defragment the file. We won't write to the file | |
366 | * ever again, hence remove all fragmentation, and | |
367 | * reenable all the good bits COW usually provides | |
368 | * (such as data checksumming). */ | |
369 | ||
1ed8f8c1 | 370 | (void) chattr_fd(f->fd, 0, FS_NOCOW_FL); |
11689d2a LP |
371 | (void) btrfs_defrag_fd(f->fd); |
372 | } | |
f27a3864 | 373 | |
5d1ce257 LP |
374 | if (f->close_fd) |
375 | safe_close(f->fd); | |
cec736d2 | 376 | free(f->path); |
807e17f0 | 377 | |
f649045c | 378 | mmap_cache_unref(f->mmap); |
16e9f408 | 379 | |
4743015d | 380 | ordered_hashmap_free_free(f->chain_cache); |
a4bcff5b | 381 | |
d89c8fdf | 382 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
807e17f0 LP |
383 | free(f->compress_buffer); |
384 | #endif | |
385 | ||
7560fffc | 386 | #ifdef HAVE_GCRYPT |
baed47c3 LP |
387 | if (f->fss_file) |
388 | munmap(f->fss_file, PAGE_ALIGN(f->fss_file_size)); | |
dc4ebc07 | 389 | else |
b7c9ae91 LP |
390 | free(f->fsprg_state); |
391 | ||
392 | free(f->fsprg_seed); | |
7560fffc LP |
393 | |
394 | if (f->hmac) | |
395 | gcry_md_close(f->hmac); | |
396 | #endif | |
397 | ||
6b430fdb | 398 | return mfree(f); |
cec736d2 LP |
399 | } |
400 | ||
b58c888f VC |
401 | void journal_file_close_set(Set *s) { |
402 | JournalFile *f; | |
403 | ||
404 | assert(s); | |
405 | ||
406 | while ((f = set_steal_first(s))) | |
407 | (void) journal_file_close(f); | |
408 | } | |
409 | ||
0ac38b70 | 410 | static int journal_file_init_header(JournalFile *f, JournalFile *template) { |
d89c8fdf | 411 | Header h = {}; |
cec736d2 LP |
412 | ssize_t k; |
413 | int r; | |
414 | ||
415 | assert(f); | |
416 | ||
7560fffc | 417 | memcpy(h.signature, HEADER_SIGNATURE, 8); |
23b0b2b2 | 418 | h.header_size = htole64(ALIGN64(sizeof(h))); |
cec736d2 | 419 | |
d89c8fdf ZJS |
420 | h.incompatible_flags |= htole32( |
421 | f->compress_xz * HEADER_INCOMPATIBLE_COMPRESSED_XZ | | |
422 | f->compress_lz4 * HEADER_INCOMPATIBLE_COMPRESSED_LZ4); | |
7560fffc | 423 | |
d89c8fdf ZJS |
424 | h.compatible_flags = htole32( |
425 | f->seal * HEADER_COMPATIBLE_SEALED); | |
7560fffc | 426 | |
cec736d2 LP |
427 | r = sd_id128_randomize(&h.file_id); |
428 | if (r < 0) | |
429 | return r; | |
430 | ||
0ac38b70 LP |
431 | if (template) { |
432 | h.seqnum_id = template->header->seqnum_id; | |
beec0085 | 433 | h.tail_entry_seqnum = template->header->tail_entry_seqnum; |
0ac38b70 LP |
434 | } else |
435 | h.seqnum_id = h.file_id; | |
cec736d2 LP |
436 | |
437 | k = pwrite(f->fd, &h, sizeof(h), 0); | |
438 | if (k < 0) | |
439 | return -errno; | |
440 | ||
441 | if (k != sizeof(h)) | |
442 | return -EIO; | |
443 | ||
444 | return 0; | |
445 | } | |
446 | ||
a0fe2a2d LP |
447 | static int fsync_directory_of_file(int fd) { |
448 | _cleanup_free_ char *path = NULL, *dn = NULL; | |
449 | _cleanup_close_ int dfd = -1; | |
450 | struct stat st; | |
451 | int r; | |
452 | ||
453 | if (fstat(fd, &st) < 0) | |
454 | return -errno; | |
455 | ||
456 | if (!S_ISREG(st.st_mode)) | |
457 | return -EBADFD; | |
458 | ||
459 | r = fd_get_path(fd, &path); | |
460 | if (r < 0) | |
461 | return r; | |
462 | ||
463 | if (!path_is_absolute(path)) | |
464 | return -EINVAL; | |
465 | ||
466 | dn = dirname_malloc(path); | |
467 | if (!dn) | |
468 | return -ENOMEM; | |
469 | ||
470 | dfd = open(dn, O_RDONLY|O_CLOEXEC|O_DIRECTORY); | |
471 | if (dfd < 0) | |
472 | return -errno; | |
473 | ||
474 | if (fsync(dfd) < 0) | |
475 | return -errno; | |
476 | ||
477 | return 0; | |
478 | } | |
479 | ||
cec736d2 | 480 | static int journal_file_refresh_header(JournalFile *f) { |
de190aef | 481 | sd_id128_t boot_id; |
fa6ac760 | 482 | int r; |
cec736d2 LP |
483 | |
484 | assert(f); | |
c88cc6af | 485 | assert(f->header); |
cec736d2 LP |
486 | |
487 | r = sd_id128_get_machine(&f->header->machine_id); | |
488 | if (r < 0) | |
489 | return r; | |
490 | ||
de190aef | 491 | r = sd_id128_get_boot(&boot_id); |
cec736d2 LP |
492 | if (r < 0) |
493 | return r; | |
494 | ||
de190aef LP |
495 | if (sd_id128_equal(boot_id, f->header->boot_id)) |
496 | f->tail_entry_monotonic_valid = true; | |
497 | ||
498 | f->header->boot_id = boot_id; | |
499 | ||
fa6ac760 | 500 | r = journal_file_set_online(f); |
b788cc23 | 501 | |
7560fffc | 502 | /* Sync the online state to disk */ |
fb426037 | 503 | (void) fsync(f->fd); |
b788cc23 | 504 | |
a0fe2a2d LP |
505 | /* We likely just created a new file, also sync the directory this file is located in. */ |
506 | (void) fsync_directory_of_file(f->fd); | |
507 | ||
fa6ac760 | 508 | return r; |
cec736d2 LP |
509 | } |
510 | ||
4214009f ZJS |
511 | static bool warn_wrong_flags(const JournalFile *f, bool compatible) { |
512 | const uint32_t any = compatible ? HEADER_COMPATIBLE_ANY : HEADER_INCOMPATIBLE_ANY, | |
513 | supported = compatible ? HEADER_COMPATIBLE_SUPPORTED : HEADER_INCOMPATIBLE_SUPPORTED; | |
514 | const char *type = compatible ? "compatible" : "incompatible"; | |
d89c8fdf ZJS |
515 | uint32_t flags; |
516 | ||
4214009f ZJS |
517 | flags = le32toh(compatible ? f->header->compatible_flags : f->header->incompatible_flags); |
518 | ||
519 | if (flags & ~supported) { | |
520 | if (flags & ~any) | |
4761fd0f | 521 | log_debug("Journal file %s has unknown %s flags 0x%"PRIx32, |
4214009f ZJS |
522 | f->path, type, flags & ~any); |
523 | flags = (flags & any) & ~supported; | |
4761fd0f ZJS |
524 | if (flags) { |
525 | const char* strv[3]; | |
526 | unsigned n = 0; | |
527 | _cleanup_free_ char *t = NULL; | |
528 | ||
529 | if (compatible && (flags & HEADER_COMPATIBLE_SEALED)) | |
530 | strv[n++] = "sealed"; | |
531 | if (!compatible && (flags & HEADER_INCOMPATIBLE_COMPRESSED_XZ)) | |
532 | strv[n++] = "xz-compressed"; | |
533 | if (!compatible && (flags & HEADER_INCOMPATIBLE_COMPRESSED_LZ4)) | |
534 | strv[n++] = "lz4-compressed"; | |
535 | strv[n] = NULL; | |
536 | assert(n < ELEMENTSOF(strv)); | |
537 | ||
538 | t = strv_join((char**) strv, ", "); | |
539 | log_debug("Journal file %s uses %s %s %s disabled at compilation time.", | |
540 | f->path, type, n > 1 ? "flags" : "flag", strnull(t)); | |
541 | } | |
4214009f ZJS |
542 | return true; |
543 | } | |
544 | ||
545 | return false; | |
546 | } | |
547 | ||
548 | static int journal_file_verify_header(JournalFile *f) { | |
6f94e420 TS |
549 | uint64_t arena_size, header_size; |
550 | ||
cec736d2 | 551 | assert(f); |
c88cc6af | 552 | assert(f->header); |
cec736d2 | 553 | |
7560fffc | 554 | if (memcmp(f->header->signature, HEADER_SIGNATURE, 8)) |
cec736d2 LP |
555 | return -EBADMSG; |
556 | ||
4214009f ZJS |
557 | /* In both read and write mode we refuse to open files with incompatible |
558 | * flags we don't know. */ | |
559 | if (warn_wrong_flags(f, false)) | |
cec736d2 LP |
560 | return -EPROTONOSUPPORT; |
561 | ||
4214009f ZJS |
562 | /* When open for writing we refuse to open files with compatible flags, too. */ |
563 | if (f->writable && warn_wrong_flags(f, true)) | |
d89c8fdf | 564 | return -EPROTONOSUPPORT; |
7560fffc | 565 | |
db11ac1a LP |
566 | if (f->header->state >= _STATE_MAX) |
567 | return -EBADMSG; | |
568 | ||
6f94e420 TS |
569 | header_size = le64toh(f->header->header_size); |
570 | ||
dca6219e | 571 | /* The first addition was n_data, so check that we are at least this large */ |
6f94e420 | 572 | if (header_size < HEADER_SIZE_MIN) |
23b0b2b2 LP |
573 | return -EBADMSG; |
574 | ||
8088cbd3 | 575 | if (JOURNAL_HEADER_SEALED(f->header) && !JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
beec0085 LP |
576 | return -EBADMSG; |
577 | ||
6f94e420 TS |
578 | arena_size = le64toh(f->header->arena_size); |
579 | ||
580 | if (UINT64_MAX - header_size < arena_size || header_size + arena_size > (uint64_t) f->last_stat.st_size) | |
db11ac1a LP |
581 | return -ENODATA; |
582 | ||
6f94e420 | 583 | if (le64toh(f->header->tail_object_offset) > header_size + arena_size) |
db11ac1a LP |
584 | return -ENODATA; |
585 | ||
7762e02b LP |
586 | if (!VALID64(le64toh(f->header->data_hash_table_offset)) || |
587 | !VALID64(le64toh(f->header->field_hash_table_offset)) || | |
588 | !VALID64(le64toh(f->header->tail_object_offset)) || | |
589 | !VALID64(le64toh(f->header->entry_array_offset))) | |
590 | return -ENODATA; | |
591 | ||
cec736d2 | 592 | if (f->writable) { |
cec736d2 | 593 | sd_id128_t machine_id; |
ae739cc1 | 594 | uint8_t state; |
cec736d2 LP |
595 | int r; |
596 | ||
597 | r = sd_id128_get_machine(&machine_id); | |
598 | if (r < 0) | |
599 | return r; | |
600 | ||
601 | if (!sd_id128_equal(machine_id, f->header->machine_id)) | |
602 | return -EHOSTDOWN; | |
603 | ||
de190aef | 604 | state = f->header->state; |
cec736d2 | 605 | |
b288cdeb ZJS |
606 | if (state == STATE_ARCHIVED) |
607 | return -ESHUTDOWN; /* Already archived */ | |
608 | else if (state == STATE_ONLINE) { | |
71fa6f00 LP |
609 | log_debug("Journal file %s is already online. Assuming unclean closing.", f->path); |
610 | return -EBUSY; | |
b288cdeb | 611 | } else if (state != STATE_OFFLINE) { |
8facc349 | 612 | log_debug("Journal file %s has unknown state %i.", f->path, state); |
71fa6f00 LP |
613 | return -EBUSY; |
614 | } | |
ae739cc1 | 615 | |
5b3cc0c8 YN |
616 | if (f->header->field_hash_table_size == 0 || f->header->data_hash_table_size == 0) |
617 | return -EBADMSG; | |
618 | ||
ae739cc1 LP |
619 | /* Don't permit appending to files from the future. Because otherwise the realtime timestamps wouldn't |
620 | * be strictly ordered in the entries in the file anymore, and we can't have that since it breaks | |
621 | * bisection. */ | |
622 | if (le64toh(f->header->tail_entry_realtime) > now(CLOCK_REALTIME)) { | |
623 | log_debug("Journal file %s is from the future, refusing to append new data to it that'd be older.", f->path); | |
624 | return -ETXTBSY; | |
625 | } | |
cec736d2 LP |
626 | } |
627 | ||
d89c8fdf ZJS |
628 | f->compress_xz = JOURNAL_HEADER_COMPRESSED_XZ(f->header); |
629 | f->compress_lz4 = JOURNAL_HEADER_COMPRESSED_LZ4(f->header); | |
c586dbf1 | 630 | |
f1889c91 | 631 | f->seal = JOURNAL_HEADER_SEALED(f->header); |
7560fffc | 632 | |
cec736d2 LP |
633 | return 0; |
634 | } | |
635 | ||
2678031a LP |
636 | static int journal_file_fstat(JournalFile *f) { |
637 | assert(f); | |
638 | assert(f->fd >= 0); | |
639 | ||
640 | if (fstat(f->fd, &f->last_stat) < 0) | |
641 | return -errno; | |
642 | ||
643 | f->last_stat_usec = now(CLOCK_MONOTONIC); | |
644 | ||
645 | /* Refuse appending to files that are already deleted */ | |
646 | if (f->last_stat.st_nlink <= 0) | |
647 | return -EIDRM; | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
cec736d2 | 652 | static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) { |
eda4b58b | 653 | uint64_t old_size, new_size; |
fec2aa2f | 654 | int r; |
cec736d2 LP |
655 | |
656 | assert(f); | |
c88cc6af | 657 | assert(f->header); |
cec736d2 | 658 | |
cec736d2 | 659 | /* We assume that this file is not sparse, and we know that |
38ac38b2 | 660 | * for sure, since we always call posix_fallocate() |
cec736d2 LP |
661 | * ourselves */ |
662 | ||
be7cdd8e | 663 | if (mmap_cache_got_sigbus(f->mmap, f->cache_fd)) |
fa6ac760 LP |
664 | return -EIO; |
665 | ||
cec736d2 | 666 | old_size = |
23b0b2b2 | 667 | le64toh(f->header->header_size) + |
cec736d2 LP |
668 | le64toh(f->header->arena_size); |
669 | ||
bc85bfee | 670 | new_size = PAGE_ALIGN(offset + size); |
23b0b2b2 LP |
671 | if (new_size < le64toh(f->header->header_size)) |
672 | new_size = le64toh(f->header->header_size); | |
bc85bfee | 673 | |
2678031a LP |
674 | if (new_size <= old_size) { |
675 | ||
676 | /* We already pre-allocated enough space, but before | |
677 | * we write to it, let's check with fstat() if the | |
678 | * file got deleted, in order make sure we don't throw | |
679 | * away the data immediately. Don't check fstat() for | |
680 | * all writes though, but only once ever 10s. */ | |
681 | ||
682 | if (f->last_stat_usec + LAST_STAT_REFRESH_USEC > now(CLOCK_MONOTONIC)) | |
683 | return 0; | |
684 | ||
685 | return journal_file_fstat(f); | |
686 | } | |
687 | ||
688 | /* Allocate more space. */ | |
cec736d2 | 689 | |
a676e665 | 690 | if (f->metrics.max_size > 0 && new_size > f->metrics.max_size) |
bc85bfee | 691 | return -E2BIG; |
cec736d2 | 692 | |
a676e665 | 693 | if (new_size > f->metrics.min_size && f->metrics.keep_free > 0) { |
cec736d2 LP |
694 | struct statvfs svfs; |
695 | ||
696 | if (fstatvfs(f->fd, &svfs) >= 0) { | |
697 | uint64_t available; | |
698 | ||
070052ab | 699 | available = LESS_BY((uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize, f->metrics.keep_free); |
cec736d2 LP |
700 | |
701 | if (new_size - old_size > available) | |
702 | return -E2BIG; | |
703 | } | |
704 | } | |
705 | ||
eda4b58b LP |
706 | /* Increase by larger blocks at once */ |
707 | new_size = ((new_size+FILE_SIZE_INCREASE-1) / FILE_SIZE_INCREASE) * FILE_SIZE_INCREASE; | |
708 | if (f->metrics.max_size > 0 && new_size > f->metrics.max_size) | |
709 | new_size = f->metrics.max_size; | |
710 | ||
bc85bfee LP |
711 | /* Note that the glibc fallocate() fallback is very |
712 | inefficient, hence we try to minimize the allocation area | |
713 | as we can. */ | |
fec2aa2f GV |
714 | r = posix_fallocate(f->fd, old_size, new_size - old_size); |
715 | if (r != 0) | |
716 | return -r; | |
cec736d2 | 717 | |
23b0b2b2 | 718 | f->header->arena_size = htole64(new_size - le64toh(f->header->header_size)); |
cec736d2 | 719 | |
2678031a | 720 | return journal_file_fstat(f); |
cec736d2 LP |
721 | } |
722 | ||
78519831 | 723 | static unsigned type_to_context(ObjectType type) { |
d3d3208f | 724 | /* One context for each type, plus one catch-all for the rest */ |
69adae51 | 725 | assert_cc(_OBJECT_TYPE_MAX <= MMAP_CACHE_MAX_CONTEXTS); |
fa6ac760 | 726 | assert_cc(CONTEXT_HEADER < MMAP_CACHE_MAX_CONTEXTS); |
d05089d8 | 727 | return type > OBJECT_UNUSED && type < _OBJECT_TYPE_MAX ? type : 0; |
d3d3208f MS |
728 | } |
729 | ||
b439282e | 730 | static int journal_file_move_to(JournalFile *f, ObjectType type, bool keep_always, uint64_t offset, uint64_t size, void **ret, size_t *ret_size) { |
2678031a LP |
731 | int r; |
732 | ||
cec736d2 | 733 | assert(f); |
cec736d2 LP |
734 | assert(ret); |
735 | ||
7762e02b LP |
736 | if (size <= 0) |
737 | return -EINVAL; | |
738 | ||
2a59ea54 | 739 | /* Avoid SIGBUS on invalid accesses */ |
4bbdcdb3 LP |
740 | if (offset + size > (uint64_t) f->last_stat.st_size) { |
741 | /* Hmm, out of range? Let's refresh the fstat() data | |
742 | * first, before we trust that check. */ | |
743 | ||
2678031a LP |
744 | r = journal_file_fstat(f); |
745 | if (r < 0) | |
746 | return r; | |
747 | ||
748 | if (offset + size > (uint64_t) f->last_stat.st_size) | |
4bbdcdb3 LP |
749 | return -EADDRNOTAVAIL; |
750 | } | |
751 | ||
b439282e | 752 | return mmap_cache_get(f->mmap, f->cache_fd, f->prot, type_to_context(type), keep_always, offset, size, &f->last_stat, ret, ret_size); |
cec736d2 LP |
753 | } |
754 | ||
16e9f408 LP |
755 | static uint64_t minimum_header_size(Object *o) { |
756 | ||
b8e891e6 | 757 | static const uint64_t table[] = { |
16e9f408 LP |
758 | [OBJECT_DATA] = sizeof(DataObject), |
759 | [OBJECT_FIELD] = sizeof(FieldObject), | |
760 | [OBJECT_ENTRY] = sizeof(EntryObject), | |
761 | [OBJECT_DATA_HASH_TABLE] = sizeof(HashTableObject), | |
762 | [OBJECT_FIELD_HASH_TABLE] = sizeof(HashTableObject), | |
763 | [OBJECT_ENTRY_ARRAY] = sizeof(EntryArrayObject), | |
764 | [OBJECT_TAG] = sizeof(TagObject), | |
765 | }; | |
766 | ||
767 | if (o->object.type >= ELEMENTSOF(table) || table[o->object.type] <= 0) | |
768 | return sizeof(ObjectHeader); | |
769 | ||
770 | return table[o->object.type]; | |
771 | } | |
772 | ||
24754f36 TR |
773 | /* Lightweight object checks. We want this to be fast, so that we won't |
774 | * slowdown every journal_file_move_to_object() call too much. */ | |
775 | static int journal_file_check_object(JournalFile *f, uint64_t offset, Object *o) { | |
776 | assert(f); | |
777 | assert(o); | |
778 | ||
779 | switch (o->object.type) { | |
780 | ||
781 | case OBJECT_DATA: { | |
782 | if ((le64toh(o->data.entry_offset) == 0) ^ (le64toh(o->data.n_entries) == 0)) { | |
783 | log_debug("Bad n_entries: %"PRIu64": %"PRIu64, | |
10e8445b | 784 | le64toh(o->data.n_entries), offset); |
24754f36 TR |
785 | return -EBADMSG; |
786 | } | |
787 | ||
788 | if (le64toh(o->object.size) - offsetof(DataObject, payload) <= 0) { | |
789 | log_debug("Bad object size (<= %zu): %"PRIu64": %"PRIu64, | |
790 | offsetof(DataObject, payload), | |
791 | le64toh(o->object.size), | |
792 | offset); | |
793 | return -EBADMSG; | |
794 | } | |
795 | ||
10e8445b TR |
796 | if (!VALID64(le64toh(o->data.next_hash_offset)) || |
797 | !VALID64(le64toh(o->data.next_field_offset)) || | |
798 | !VALID64(le64toh(o->data.entry_offset)) || | |
799 | !VALID64(le64toh(o->data.entry_array_offset))) { | |
24754f36 TR |
800 | log_debug("Invalid offset, next_hash_offset="OFSfmt", next_field_offset="OFSfmt |
801 | ", entry_offset="OFSfmt", entry_array_offset="OFSfmt": %"PRIu64, | |
10e8445b TR |
802 | le64toh(o->data.next_hash_offset), |
803 | le64toh(o->data.next_field_offset), | |
804 | le64toh(o->data.entry_offset), | |
805 | le64toh(o->data.entry_array_offset), | |
24754f36 TR |
806 | offset); |
807 | return -EBADMSG; | |
808 | } | |
809 | ||
810 | break; | |
811 | } | |
812 | ||
813 | case OBJECT_FIELD: | |
814 | if (le64toh(o->object.size) - offsetof(FieldObject, payload) <= 0) { | |
815 | log_debug( | |
816 | "Bad field size (<= %zu): %"PRIu64": %"PRIu64, | |
817 | offsetof(FieldObject, payload), | |
818 | le64toh(o->object.size), | |
819 | offset); | |
820 | return -EBADMSG; | |
821 | } | |
822 | ||
10e8445b TR |
823 | if (!VALID64(le64toh(o->field.next_hash_offset)) || |
824 | !VALID64(le64toh(o->field.head_data_offset))) { | |
24754f36 TR |
825 | log_debug( |
826 | "Invalid offset, next_hash_offset="OFSfmt | |
827 | ", head_data_offset="OFSfmt": %"PRIu64, | |
10e8445b TR |
828 | le64toh(o->field.next_hash_offset), |
829 | le64toh(o->field.head_data_offset), | |
24754f36 TR |
830 | offset); |
831 | return -EBADMSG; | |
832 | } | |
833 | break; | |
834 | ||
835 | case OBJECT_ENTRY: | |
836 | if ((le64toh(o->object.size) - offsetof(EntryObject, items)) % sizeof(EntryItem) != 0) { | |
837 | log_debug( | |
838 | "Bad entry size (<= %zu): %"PRIu64": %"PRIu64, | |
839 | offsetof(EntryObject, items), | |
840 | le64toh(o->object.size), | |
841 | offset); | |
842 | return -EBADMSG; | |
843 | } | |
844 | ||
845 | if ((le64toh(o->object.size) - offsetof(EntryObject, items)) / sizeof(EntryItem) <= 0) { | |
846 | log_debug( | |
847 | "Invalid number items in entry: %"PRIu64": %"PRIu64, | |
848 | (le64toh(o->object.size) - offsetof(EntryObject, items)) / sizeof(EntryItem), | |
849 | offset); | |
850 | return -EBADMSG; | |
851 | } | |
852 | ||
853 | if (le64toh(o->entry.seqnum) <= 0) { | |
854 | log_debug( | |
855 | "Invalid entry seqnum: %"PRIx64": %"PRIu64, | |
856 | le64toh(o->entry.seqnum), | |
857 | offset); | |
858 | return -EBADMSG; | |
859 | } | |
860 | ||
861 | if (!VALID_REALTIME(le64toh(o->entry.realtime))) { | |
862 | log_debug( | |
863 | "Invalid entry realtime timestamp: %"PRIu64": %"PRIu64, | |
864 | le64toh(o->entry.realtime), | |
865 | offset); | |
866 | return -EBADMSG; | |
867 | } | |
868 | ||
869 | if (!VALID_MONOTONIC(le64toh(o->entry.monotonic))) { | |
870 | log_debug( | |
871 | "Invalid entry monotonic timestamp: %"PRIu64": %"PRIu64, | |
872 | le64toh(o->entry.monotonic), | |
873 | offset); | |
874 | return -EBADMSG; | |
875 | } | |
876 | ||
877 | break; | |
878 | ||
879 | case OBJECT_DATA_HASH_TABLE: | |
880 | case OBJECT_FIELD_HASH_TABLE: | |
881 | if ((le64toh(o->object.size) - offsetof(HashTableObject, items)) % sizeof(HashItem) != 0 || | |
882 | (le64toh(o->object.size) - offsetof(HashTableObject, items)) / sizeof(HashItem) <= 0) { | |
883 | log_debug( | |
884 | "Invalid %s hash table size: %"PRIu64": %"PRIu64, | |
885 | o->object.type == OBJECT_DATA_HASH_TABLE ? "data" : "field", | |
886 | le64toh(o->object.size), | |
887 | offset); | |
888 | return -EBADMSG; | |
889 | } | |
890 | ||
891 | break; | |
892 | ||
893 | case OBJECT_ENTRY_ARRAY: | |
894 | if ((le64toh(o->object.size) - offsetof(EntryArrayObject, items)) % sizeof(le64_t) != 0 || | |
895 | (le64toh(o->object.size) - offsetof(EntryArrayObject, items)) / sizeof(le64_t) <= 0) { | |
896 | log_debug( | |
897 | "Invalid object entry array size: %"PRIu64": %"PRIu64, | |
898 | le64toh(o->object.size), | |
899 | offset); | |
900 | return -EBADMSG; | |
901 | } | |
902 | ||
10e8445b | 903 | if (!VALID64(le64toh(o->entry_array.next_entry_array_offset))) { |
24754f36 TR |
904 | log_debug( |
905 | "Invalid object entry array next_entry_array_offset: "OFSfmt": %"PRIu64, | |
10e8445b | 906 | le64toh(o->entry_array.next_entry_array_offset), |
24754f36 TR |
907 | offset); |
908 | return -EBADMSG; | |
909 | } | |
910 | ||
911 | break; | |
912 | ||
913 | case OBJECT_TAG: | |
914 | if (le64toh(o->object.size) != sizeof(TagObject)) { | |
915 | log_debug( | |
916 | "Invalid object tag size: %"PRIu64": %"PRIu64, | |
917 | le64toh(o->object.size), | |
918 | offset); | |
919 | return -EBADMSG; | |
920 | } | |
921 | ||
10e8445b | 922 | if (!VALID_EPOCH(le64toh(o->tag.epoch))) { |
24754f36 TR |
923 | log_debug( |
924 | "Invalid object tag epoch: %"PRIu64": %"PRIu64, | |
10e8445b | 925 | le64toh(o->tag.epoch), |
24754f36 TR |
926 | offset); |
927 | return -EBADMSG; | |
928 | } | |
929 | ||
930 | break; | |
931 | } | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
78519831 | 936 | int journal_file_move_to_object(JournalFile *f, ObjectType type, uint64_t offset, Object **ret) { |
cec736d2 LP |
937 | int r; |
938 | void *t; | |
b439282e | 939 | size_t tsize; |
cec736d2 LP |
940 | Object *o; |
941 | uint64_t s; | |
942 | ||
943 | assert(f); | |
944 | assert(ret); | |
945 | ||
db11ac1a | 946 | /* Objects may only be located at multiple of 64 bit */ |
202fd896 LP |
947 | if (!VALID64(offset)) { |
948 | log_debug("Attempt to move to object at non-64bit boundary: %" PRIu64, offset); | |
bd30fdf2 | 949 | return -EBADMSG; |
202fd896 | 950 | } |
db11ac1a | 951 | |
50809d7a | 952 | /* Object may not be located in the file header */ |
202fd896 LP |
953 | if (offset < le64toh(f->header->header_size)) { |
954 | log_debug("Attempt to move to object located in file header: %" PRIu64, offset); | |
50809d7a | 955 | return -EBADMSG; |
202fd896 | 956 | } |
50809d7a | 957 | |
b439282e | 958 | r = journal_file_move_to(f, type, false, offset, sizeof(ObjectHeader), &t, &tsize); |
cec736d2 LP |
959 | if (r < 0) |
960 | return r; | |
961 | ||
962 | o = (Object*) t; | |
963 | s = le64toh(o->object.size); | |
964 | ||
1c69f096 LP |
965 | if (s == 0) { |
966 | log_debug("Attempt to move to uninitialized object: %" PRIu64, offset); | |
967 | return -EBADMSG; | |
968 | } | |
202fd896 LP |
969 | if (s < sizeof(ObjectHeader)) { |
970 | log_debug("Attempt to move to overly short object: %" PRIu64, offset); | |
cec736d2 | 971 | return -EBADMSG; |
202fd896 | 972 | } |
cec736d2 | 973 | |
202fd896 LP |
974 | if (o->object.type <= OBJECT_UNUSED) { |
975 | log_debug("Attempt to move to object with invalid type: %" PRIu64, offset); | |
16e9f408 | 976 | return -EBADMSG; |
202fd896 | 977 | } |
16e9f408 | 978 | |
202fd896 LP |
979 | if (s < minimum_header_size(o)) { |
980 | log_debug("Attempt to move to truncated object: %" PRIu64, offset); | |
16e9f408 | 981 | return -EBADMSG; |
202fd896 | 982 | } |
16e9f408 | 983 | |
202fd896 LP |
984 | if (type > OBJECT_UNUSED && o->object.type != type) { |
985 | log_debug("Attempt to move to object of unexpected type: %" PRIu64, offset); | |
cec736d2 | 986 | return -EBADMSG; |
202fd896 | 987 | } |
cec736d2 | 988 | |
b439282e VC |
989 | if (s > tsize) { |
990 | r = journal_file_move_to(f, type, false, offset, s, &t, NULL); | |
cec736d2 LP |
991 | if (r < 0) |
992 | return r; | |
993 | ||
994 | o = (Object*) t; | |
995 | } | |
996 | ||
24754f36 TR |
997 | r = journal_file_check_object(f, offset, o); |
998 | if (r < 0) | |
999 | return r; | |
1000 | ||
cec736d2 LP |
1001 | *ret = o; |
1002 | return 0; | |
1003 | } | |
1004 | ||
d98cc1f2 | 1005 | static uint64_t journal_file_entry_seqnum(JournalFile *f, uint64_t *seqnum) { |
cec736d2 LP |
1006 | uint64_t r; |
1007 | ||
1008 | assert(f); | |
c88cc6af | 1009 | assert(f->header); |
cec736d2 | 1010 | |
beec0085 | 1011 | r = le64toh(f->header->tail_entry_seqnum) + 1; |
c2373f84 LP |
1012 | |
1013 | if (seqnum) { | |
de190aef | 1014 | /* If an external seqnum counter was passed, we update |
c2373f84 LP |
1015 | * both the local and the external one, and set it to |
1016 | * the maximum of both */ | |
1017 | ||
1018 | if (*seqnum + 1 > r) | |
1019 | r = *seqnum + 1; | |
1020 | ||
1021 | *seqnum = r; | |
1022 | } | |
1023 | ||
beec0085 | 1024 | f->header->tail_entry_seqnum = htole64(r); |
cec736d2 | 1025 | |
beec0085 LP |
1026 | if (f->header->head_entry_seqnum == 0) |
1027 | f->header->head_entry_seqnum = htole64(r); | |
de190aef | 1028 | |
cec736d2 LP |
1029 | return r; |
1030 | } | |
1031 | ||
78519831 | 1032 | int journal_file_append_object(JournalFile *f, ObjectType type, uint64_t size, Object **ret, uint64_t *offset) { |
cec736d2 LP |
1033 | int r; |
1034 | uint64_t p; | |
1035 | Object *tail, *o; | |
1036 | void *t; | |
1037 | ||
1038 | assert(f); | |
c88cc6af | 1039 | assert(f->header); |
d05089d8 | 1040 | assert(type > OBJECT_UNUSED && type < _OBJECT_TYPE_MAX); |
cec736d2 LP |
1041 | assert(size >= sizeof(ObjectHeader)); |
1042 | assert(offset); | |
1043 | assert(ret); | |
1044 | ||
26687bf8 OS |
1045 | r = journal_file_set_online(f); |
1046 | if (r < 0) | |
1047 | return r; | |
1048 | ||
cec736d2 | 1049 | p = le64toh(f->header->tail_object_offset); |
cec736d2 | 1050 | if (p == 0) |
23b0b2b2 | 1051 | p = le64toh(f->header->header_size); |
cec736d2 | 1052 | else { |
d05089d8 | 1053 | r = journal_file_move_to_object(f, OBJECT_UNUSED, p, &tail); |
cec736d2 LP |
1054 | if (r < 0) |
1055 | return r; | |
1056 | ||
1057 | p += ALIGN64(le64toh(tail->object.size)); | |
1058 | } | |
1059 | ||
1060 | r = journal_file_allocate(f, p, size); | |
1061 | if (r < 0) | |
1062 | return r; | |
1063 | ||
b439282e | 1064 | r = journal_file_move_to(f, type, false, p, size, &t, NULL); |
cec736d2 LP |
1065 | if (r < 0) |
1066 | return r; | |
1067 | ||
1068 | o = (Object*) t; | |
1069 | ||
1070 | zero(o->object); | |
de190aef | 1071 | o->object.type = type; |
cec736d2 LP |
1072 | o->object.size = htole64(size); |
1073 | ||
1074 | f->header->tail_object_offset = htole64(p); | |
cec736d2 LP |
1075 | f->header->n_objects = htole64(le64toh(f->header->n_objects) + 1); |
1076 | ||
1077 | *ret = o; | |
1078 | *offset = p; | |
1079 | ||
1080 | return 0; | |
1081 | } | |
1082 | ||
de190aef | 1083 | static int journal_file_setup_data_hash_table(JournalFile *f) { |
cec736d2 LP |
1084 | uint64_t s, p; |
1085 | Object *o; | |
1086 | int r; | |
1087 | ||
1088 | assert(f); | |
c88cc6af | 1089 | assert(f->header); |
cec736d2 | 1090 | |
070052ab LP |
1091 | /* We estimate that we need 1 hash table entry per 768 bytes |
1092 | of journal file and we want to make sure we never get | |
1093 | beyond 75% fill level. Calculate the hash table size for | |
1094 | the maximum file size based on these metrics. */ | |
4a92baf3 | 1095 | |
dfabe643 | 1096 | s = (f->metrics.max_size * 4 / 768 / 3) * sizeof(HashItem); |
4a92baf3 LP |
1097 | if (s < DEFAULT_DATA_HASH_TABLE_SIZE) |
1098 | s = DEFAULT_DATA_HASH_TABLE_SIZE; | |
1099 | ||
507f22bd | 1100 | log_debug("Reserving %"PRIu64" entries in hash table.", s / sizeof(HashItem)); |
4a92baf3 | 1101 | |
de190aef LP |
1102 | r = journal_file_append_object(f, |
1103 | OBJECT_DATA_HASH_TABLE, | |
1104 | offsetof(Object, hash_table.items) + s, | |
1105 | &o, &p); | |
cec736d2 LP |
1106 | if (r < 0) |
1107 | return r; | |
1108 | ||
29804cc1 | 1109 | memzero(o->hash_table.items, s); |
cec736d2 | 1110 | |
de190aef LP |
1111 | f->header->data_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
1112 | f->header->data_hash_table_size = htole64(s); | |
cec736d2 LP |
1113 | |
1114 | return 0; | |
1115 | } | |
1116 | ||
de190aef | 1117 | static int journal_file_setup_field_hash_table(JournalFile *f) { |
cec736d2 LP |
1118 | uint64_t s, p; |
1119 | Object *o; | |
1120 | int r; | |
1121 | ||
1122 | assert(f); | |
c88cc6af | 1123 | assert(f->header); |
cec736d2 | 1124 | |
3c1668da LP |
1125 | /* We use a fixed size hash table for the fields as this |
1126 | * number should grow very slowly only */ | |
1127 | ||
de190aef LP |
1128 | s = DEFAULT_FIELD_HASH_TABLE_SIZE; |
1129 | r = journal_file_append_object(f, | |
1130 | OBJECT_FIELD_HASH_TABLE, | |
1131 | offsetof(Object, hash_table.items) + s, | |
1132 | &o, &p); | |
cec736d2 LP |
1133 | if (r < 0) |
1134 | return r; | |
1135 | ||
29804cc1 | 1136 | memzero(o->hash_table.items, s); |
cec736d2 | 1137 | |
de190aef LP |
1138 | f->header->field_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
1139 | f->header->field_hash_table_size = htole64(s); | |
cec736d2 LP |
1140 | |
1141 | return 0; | |
1142 | } | |
1143 | ||
dade37d4 | 1144 | int journal_file_map_data_hash_table(JournalFile *f) { |
cec736d2 LP |
1145 | uint64_t s, p; |
1146 | void *t; | |
1147 | int r; | |
1148 | ||
1149 | assert(f); | |
c88cc6af | 1150 | assert(f->header); |
cec736d2 | 1151 | |
dade37d4 LP |
1152 | if (f->data_hash_table) |
1153 | return 0; | |
1154 | ||
de190aef LP |
1155 | p = le64toh(f->header->data_hash_table_offset); |
1156 | s = le64toh(f->header->data_hash_table_size); | |
cec736d2 | 1157 | |
de190aef | 1158 | r = journal_file_move_to(f, |
16e9f408 | 1159 | OBJECT_DATA_HASH_TABLE, |
fcde2389 | 1160 | true, |
de190aef | 1161 | p, s, |
b42549ad | 1162 | &t, NULL); |
cec736d2 LP |
1163 | if (r < 0) |
1164 | return r; | |
1165 | ||
de190aef | 1166 | f->data_hash_table = t; |
cec736d2 LP |
1167 | return 0; |
1168 | } | |
1169 | ||
dade37d4 | 1170 | int journal_file_map_field_hash_table(JournalFile *f) { |
cec736d2 LP |
1171 | uint64_t s, p; |
1172 | void *t; | |
1173 | int r; | |
1174 | ||
1175 | assert(f); | |
c88cc6af | 1176 | assert(f->header); |
cec736d2 | 1177 | |
dade37d4 LP |
1178 | if (f->field_hash_table) |
1179 | return 0; | |
1180 | ||
de190aef LP |
1181 | p = le64toh(f->header->field_hash_table_offset); |
1182 | s = le64toh(f->header->field_hash_table_size); | |
cec736d2 | 1183 | |
de190aef | 1184 | r = journal_file_move_to(f, |
16e9f408 | 1185 | OBJECT_FIELD_HASH_TABLE, |
fcde2389 | 1186 | true, |
de190aef | 1187 | p, s, |
b42549ad | 1188 | &t, NULL); |
cec736d2 LP |
1189 | if (r < 0) |
1190 | return r; | |
1191 | ||
de190aef | 1192 | f->field_hash_table = t; |
cec736d2 LP |
1193 | return 0; |
1194 | } | |
1195 | ||
3c1668da LP |
1196 | static int journal_file_link_field( |
1197 | JournalFile *f, | |
1198 | Object *o, | |
1199 | uint64_t offset, | |
1200 | uint64_t hash) { | |
1201 | ||
805d1486 | 1202 | uint64_t p, h, m; |
3c1668da LP |
1203 | int r; |
1204 | ||
1205 | assert(f); | |
c88cc6af | 1206 | assert(f->header); |
90d222c1 | 1207 | assert(f->field_hash_table); |
3c1668da LP |
1208 | assert(o); |
1209 | assert(offset > 0); | |
1210 | ||
1211 | if (o->object.type != OBJECT_FIELD) | |
1212 | return -EINVAL; | |
1213 | ||
805d1486 LP |
1214 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); |
1215 | if (m <= 0) | |
1216 | return -EBADMSG; | |
3c1668da | 1217 | |
805d1486 | 1218 | /* This might alter the window we are looking at */ |
3c1668da LP |
1219 | o->field.next_hash_offset = o->field.head_data_offset = 0; |
1220 | ||
805d1486 | 1221 | h = hash % m; |
3c1668da LP |
1222 | p = le64toh(f->field_hash_table[h].tail_hash_offset); |
1223 | if (p == 0) | |
1224 | f->field_hash_table[h].head_hash_offset = htole64(offset); | |
1225 | else { | |
1226 | r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o); | |
1227 | if (r < 0) | |
1228 | return r; | |
1229 | ||
1230 | o->field.next_hash_offset = htole64(offset); | |
1231 | } | |
1232 | ||
1233 | f->field_hash_table[h].tail_hash_offset = htole64(offset); | |
1234 | ||
1235 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
1236 | f->header->n_fields = htole64(le64toh(f->header->n_fields) + 1); | |
1237 | ||
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | static int journal_file_link_data( | |
1242 | JournalFile *f, | |
1243 | Object *o, | |
1244 | uint64_t offset, | |
1245 | uint64_t hash) { | |
1246 | ||
805d1486 | 1247 | uint64_t p, h, m; |
cec736d2 LP |
1248 | int r; |
1249 | ||
1250 | assert(f); | |
c88cc6af | 1251 | assert(f->header); |
90d222c1 | 1252 | assert(f->data_hash_table); |
cec736d2 LP |
1253 | assert(o); |
1254 | assert(offset > 0); | |
b588975f LP |
1255 | |
1256 | if (o->object.type != OBJECT_DATA) | |
1257 | return -EINVAL; | |
cec736d2 | 1258 | |
805d1486 LP |
1259 | m = le64toh(f->header->data_hash_table_size) / sizeof(HashItem); |
1260 | if (m <= 0) | |
1261 | return -EBADMSG; | |
48496df6 | 1262 | |
805d1486 | 1263 | /* This might alter the window we are looking at */ |
de190aef LP |
1264 | o->data.next_hash_offset = o->data.next_field_offset = 0; |
1265 | o->data.entry_offset = o->data.entry_array_offset = 0; | |
1266 | o->data.n_entries = 0; | |
cec736d2 | 1267 | |
805d1486 | 1268 | h = hash % m; |
8db4213e | 1269 | p = le64toh(f->data_hash_table[h].tail_hash_offset); |
3c1668da | 1270 | if (p == 0) |
cec736d2 | 1271 | /* Only entry in the hash table is easy */ |
de190aef | 1272 | f->data_hash_table[h].head_hash_offset = htole64(offset); |
3c1668da | 1273 | else { |
48496df6 LP |
1274 | /* Move back to the previous data object, to patch in |
1275 | * pointer */ | |
cec736d2 | 1276 | |
de190aef | 1277 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
1278 | if (r < 0) |
1279 | return r; | |
1280 | ||
de190aef | 1281 | o->data.next_hash_offset = htole64(offset); |
cec736d2 LP |
1282 | } |
1283 | ||
de190aef | 1284 | f->data_hash_table[h].tail_hash_offset = htole64(offset); |
cec736d2 | 1285 | |
dca6219e LP |
1286 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
1287 | f->header->n_data = htole64(le64toh(f->header->n_data) + 1); | |
1288 | ||
cec736d2 LP |
1289 | return 0; |
1290 | } | |
1291 | ||
3c1668da LP |
1292 | int journal_file_find_field_object_with_hash( |
1293 | JournalFile *f, | |
1294 | const void *field, uint64_t size, uint64_t hash, | |
1295 | Object **ret, uint64_t *offset) { | |
1296 | ||
805d1486 | 1297 | uint64_t p, osize, h, m; |
3c1668da LP |
1298 | int r; |
1299 | ||
1300 | assert(f); | |
c88cc6af | 1301 | assert(f->header); |
3c1668da LP |
1302 | assert(field && size > 0); |
1303 | ||
dade37d4 LP |
1304 | /* If the field hash table is empty, we can't find anything */ |
1305 | if (le64toh(f->header->field_hash_table_size) <= 0) | |
1306 | return 0; | |
1307 | ||
1308 | /* Map the field hash table, if it isn't mapped yet. */ | |
1309 | r = journal_file_map_field_hash_table(f); | |
1310 | if (r < 0) | |
1311 | return r; | |
1312 | ||
3c1668da LP |
1313 | osize = offsetof(Object, field.payload) + size; |
1314 | ||
805d1486 | 1315 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); |
805d1486 | 1316 | if (m <= 0) |
3c1668da LP |
1317 | return -EBADMSG; |
1318 | ||
805d1486 | 1319 | h = hash % m; |
3c1668da LP |
1320 | p = le64toh(f->field_hash_table[h].head_hash_offset); |
1321 | ||
1322 | while (p > 0) { | |
1323 | Object *o; | |
1324 | ||
1325 | r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o); | |
1326 | if (r < 0) | |
1327 | return r; | |
1328 | ||
1329 | if (le64toh(o->field.hash) == hash && | |
1330 | le64toh(o->object.size) == osize && | |
1331 | memcmp(o->field.payload, field, size) == 0) { | |
1332 | ||
1333 | if (ret) | |
1334 | *ret = o; | |
1335 | if (offset) | |
1336 | *offset = p; | |
1337 | ||
1338 | return 1; | |
1339 | } | |
1340 | ||
1341 | p = le64toh(o->field.next_hash_offset); | |
1342 | } | |
1343 | ||
1344 | return 0; | |
1345 | } | |
1346 | ||
1347 | int journal_file_find_field_object( | |
1348 | JournalFile *f, | |
1349 | const void *field, uint64_t size, | |
1350 | Object **ret, uint64_t *offset) { | |
1351 | ||
1352 | uint64_t hash; | |
1353 | ||
1354 | assert(f); | |
1355 | assert(field && size > 0); | |
1356 | ||
1357 | hash = hash64(field, size); | |
1358 | ||
1359 | return journal_file_find_field_object_with_hash(f, | |
1360 | field, size, hash, | |
1361 | ret, offset); | |
1362 | } | |
1363 | ||
de190aef LP |
1364 | int journal_file_find_data_object_with_hash( |
1365 | JournalFile *f, | |
1366 | const void *data, uint64_t size, uint64_t hash, | |
1367 | Object **ret, uint64_t *offset) { | |
48496df6 | 1368 | |
805d1486 | 1369 | uint64_t p, osize, h, m; |
cec736d2 LP |
1370 | int r; |
1371 | ||
1372 | assert(f); | |
c88cc6af | 1373 | assert(f->header); |
cec736d2 LP |
1374 | assert(data || size == 0); |
1375 | ||
dade37d4 LP |
1376 | /* If there's no data hash table, then there's no entry. */ |
1377 | if (le64toh(f->header->data_hash_table_size) <= 0) | |
1378 | return 0; | |
1379 | ||
1380 | /* Map the data hash table, if it isn't mapped yet. */ | |
1381 | r = journal_file_map_data_hash_table(f); | |
1382 | if (r < 0) | |
1383 | return r; | |
1384 | ||
cec736d2 LP |
1385 | osize = offsetof(Object, data.payload) + size; |
1386 | ||
805d1486 LP |
1387 | m = le64toh(f->header->data_hash_table_size) / sizeof(HashItem); |
1388 | if (m <= 0) | |
bc85bfee LP |
1389 | return -EBADMSG; |
1390 | ||
805d1486 | 1391 | h = hash % m; |
de190aef | 1392 | p = le64toh(f->data_hash_table[h].head_hash_offset); |
cec736d2 | 1393 | |
de190aef LP |
1394 | while (p > 0) { |
1395 | Object *o; | |
cec736d2 | 1396 | |
de190aef | 1397 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
1398 | if (r < 0) |
1399 | return r; | |
1400 | ||
807e17f0 | 1401 | if (le64toh(o->data.hash) != hash) |
85a131e8 | 1402 | goto next; |
807e17f0 | 1403 | |
d89c8fdf | 1404 | if (o->object.flags & OBJECT_COMPRESSION_MASK) { |
3b1a55e1 | 1405 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 1406 | uint64_t l; |
a7f7d1bd | 1407 | size_t rsize = 0; |
cec736d2 | 1408 | |
807e17f0 LP |
1409 | l = le64toh(o->object.size); |
1410 | if (l <= offsetof(Object, data.payload)) | |
cec736d2 LP |
1411 | return -EBADMSG; |
1412 | ||
807e17f0 LP |
1413 | l -= offsetof(Object, data.payload); |
1414 | ||
d89c8fdf ZJS |
1415 | r = decompress_blob(o->object.flags & OBJECT_COMPRESSION_MASK, |
1416 | o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, 0); | |
1417 | if (r < 0) | |
1418 | return r; | |
807e17f0 | 1419 | |
b785c858 | 1420 | if (rsize == size && |
807e17f0 LP |
1421 | memcmp(f->compress_buffer, data, size) == 0) { |
1422 | ||
1423 | if (ret) | |
1424 | *ret = o; | |
1425 | ||
1426 | if (offset) | |
1427 | *offset = p; | |
1428 | ||
1429 | return 1; | |
1430 | } | |
3b1a55e1 ZJS |
1431 | #else |
1432 | return -EPROTONOSUPPORT; | |
1433 | #endif | |
807e17f0 LP |
1434 | } else if (le64toh(o->object.size) == osize && |
1435 | memcmp(o->data.payload, data, size) == 0) { | |
1436 | ||
cec736d2 LP |
1437 | if (ret) |
1438 | *ret = o; | |
1439 | ||
1440 | if (offset) | |
1441 | *offset = p; | |
1442 | ||
de190aef | 1443 | return 1; |
cec736d2 LP |
1444 | } |
1445 | ||
85a131e8 | 1446 | next: |
cec736d2 LP |
1447 | p = le64toh(o->data.next_hash_offset); |
1448 | } | |
1449 | ||
de190aef LP |
1450 | return 0; |
1451 | } | |
1452 | ||
1453 | int journal_file_find_data_object( | |
1454 | JournalFile *f, | |
1455 | const void *data, uint64_t size, | |
1456 | Object **ret, uint64_t *offset) { | |
1457 | ||
1458 | uint64_t hash; | |
1459 | ||
1460 | assert(f); | |
1461 | assert(data || size == 0); | |
1462 | ||
1463 | hash = hash64(data, size); | |
1464 | ||
1465 | return journal_file_find_data_object_with_hash(f, | |
1466 | data, size, hash, | |
1467 | ret, offset); | |
1468 | } | |
1469 | ||
3c1668da LP |
1470 | static int journal_file_append_field( |
1471 | JournalFile *f, | |
1472 | const void *field, uint64_t size, | |
1473 | Object **ret, uint64_t *offset) { | |
1474 | ||
1475 | uint64_t hash, p; | |
1476 | uint64_t osize; | |
1477 | Object *o; | |
1478 | int r; | |
1479 | ||
1480 | assert(f); | |
1481 | assert(field && size > 0); | |
1482 | ||
1483 | hash = hash64(field, size); | |
1484 | ||
1485 | r = journal_file_find_field_object_with_hash(f, field, size, hash, &o, &p); | |
1486 | if (r < 0) | |
1487 | return r; | |
1488 | else if (r > 0) { | |
1489 | ||
1490 | if (ret) | |
1491 | *ret = o; | |
1492 | ||
1493 | if (offset) | |
1494 | *offset = p; | |
1495 | ||
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | osize = offsetof(Object, field.payload) + size; | |
1500 | r = journal_file_append_object(f, OBJECT_FIELD, osize, &o, &p); | |
8c92d4bb LP |
1501 | if (r < 0) |
1502 | return r; | |
3c1668da LP |
1503 | |
1504 | o->field.hash = htole64(hash); | |
1505 | memcpy(o->field.payload, field, size); | |
1506 | ||
1507 | r = journal_file_link_field(f, o, p, hash); | |
1508 | if (r < 0) | |
1509 | return r; | |
1510 | ||
1511 | /* The linking might have altered the window, so let's | |
1512 | * refresh our pointer */ | |
1513 | r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o); | |
1514 | if (r < 0) | |
1515 | return r; | |
1516 | ||
1517 | #ifdef HAVE_GCRYPT | |
1518 | r = journal_file_hmac_put_object(f, OBJECT_FIELD, o, p); | |
1519 | if (r < 0) | |
1520 | return r; | |
1521 | #endif | |
1522 | ||
1523 | if (ret) | |
1524 | *ret = o; | |
1525 | ||
1526 | if (offset) | |
1527 | *offset = p; | |
1528 | ||
1529 | return 0; | |
1530 | } | |
1531 | ||
48496df6 LP |
1532 | static int journal_file_append_data( |
1533 | JournalFile *f, | |
1534 | const void *data, uint64_t size, | |
1535 | Object **ret, uint64_t *offset) { | |
1536 | ||
de190aef LP |
1537 | uint64_t hash, p; |
1538 | uint64_t osize; | |
1539 | Object *o; | |
d89c8fdf | 1540 | int r, compression = 0; |
3c1668da | 1541 | const void *eq; |
de190aef LP |
1542 | |
1543 | assert(f); | |
1544 | assert(data || size == 0); | |
1545 | ||
1546 | hash = hash64(data, size); | |
1547 | ||
1548 | r = journal_file_find_data_object_with_hash(f, data, size, hash, &o, &p); | |
1549 | if (r < 0) | |
1550 | return r; | |
0240c603 | 1551 | if (r > 0) { |
de190aef LP |
1552 | |
1553 | if (ret) | |
1554 | *ret = o; | |
1555 | ||
1556 | if (offset) | |
1557 | *offset = p; | |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | osize = offsetof(Object, data.payload) + size; | |
1563 | r = journal_file_append_object(f, OBJECT_DATA, osize, &o, &p); | |
cec736d2 LP |
1564 | if (r < 0) |
1565 | return r; | |
1566 | ||
cec736d2 | 1567 | o->data.hash = htole64(hash); |
807e17f0 | 1568 | |
d89c8fdf | 1569 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
d1afbcd2 | 1570 | if (JOURNAL_FILE_COMPRESS(f) && size >= COMPRESSION_SIZE_THRESHOLD) { |
a7f7d1bd | 1571 | size_t rsize = 0; |
807e17f0 | 1572 | |
5d6f46b6 | 1573 | compression = compress_blob(data, size, o->data.payload, size - 1, &rsize); |
807e17f0 | 1574 | |
d1afbcd2 | 1575 | if (compression >= 0) { |
807e17f0 | 1576 | o->object.size = htole64(offsetof(Object, data.payload) + rsize); |
d89c8fdf | 1577 | o->object.flags |= compression; |
807e17f0 | 1578 | |
fa1c4b51 | 1579 | log_debug("Compressed data object %"PRIu64" -> %zu using %s", |
d89c8fdf | 1580 | size, rsize, object_compressed_to_string(compression)); |
d1afbcd2 LP |
1581 | } else |
1582 | /* Compression didn't work, we don't really care why, let's continue without compression */ | |
1583 | compression = 0; | |
807e17f0 LP |
1584 | } |
1585 | #endif | |
1586 | ||
75f32f04 ZJS |
1587 | if (compression == 0) |
1588 | memcpy_safe(o->data.payload, data, size); | |
cec736d2 | 1589 | |
de190aef | 1590 | r = journal_file_link_data(f, o, p, hash); |
cec736d2 LP |
1591 | if (r < 0) |
1592 | return r; | |
1593 | ||
33685a5a FB |
1594 | #ifdef HAVE_GCRYPT |
1595 | r = journal_file_hmac_put_object(f, OBJECT_DATA, o, p); | |
1596 | if (r < 0) | |
1597 | return r; | |
1598 | #endif | |
1599 | ||
48496df6 LP |
1600 | /* The linking might have altered the window, so let's |
1601 | * refresh our pointer */ | |
1602 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
1603 | if (r < 0) | |
1604 | return r; | |
1605 | ||
08c6f819 SL |
1606 | if (!data) |
1607 | eq = NULL; | |
1608 | else | |
1609 | eq = memchr(data, '=', size); | |
3c1668da | 1610 | if (eq && eq > data) { |
748db592 | 1611 | Object *fo = NULL; |
3c1668da | 1612 | uint64_t fp; |
3c1668da LP |
1613 | |
1614 | /* Create field object ... */ | |
1615 | r = journal_file_append_field(f, data, (uint8_t*) eq - (uint8_t*) data, &fo, &fp); | |
1616 | if (r < 0) | |
1617 | return r; | |
1618 | ||
1619 | /* ... and link it in. */ | |
1620 | o->data.next_field_offset = fo->field.head_data_offset; | |
1621 | fo->field.head_data_offset = le64toh(p); | |
1622 | } | |
1623 | ||
cec736d2 LP |
1624 | if (ret) |
1625 | *ret = o; | |
1626 | ||
1627 | if (offset) | |
de190aef | 1628 | *offset = p; |
cec736d2 LP |
1629 | |
1630 | return 0; | |
1631 | } | |
1632 | ||
1633 | uint64_t journal_file_entry_n_items(Object *o) { | |
1634 | assert(o); | |
b588975f LP |
1635 | |
1636 | if (o->object.type != OBJECT_ENTRY) | |
1637 | return 0; | |
cec736d2 LP |
1638 | |
1639 | return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem); | |
1640 | } | |
1641 | ||
0284adc6 | 1642 | uint64_t journal_file_entry_array_n_items(Object *o) { |
de190aef | 1643 | assert(o); |
b588975f LP |
1644 | |
1645 | if (o->object.type != OBJECT_ENTRY_ARRAY) | |
1646 | return 0; | |
de190aef LP |
1647 | |
1648 | return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t); | |
1649 | } | |
1650 | ||
fb9a24b6 LP |
1651 | uint64_t journal_file_hash_table_n_items(Object *o) { |
1652 | assert(o); | |
b588975f LP |
1653 | |
1654 | if (o->object.type != OBJECT_DATA_HASH_TABLE && | |
1655 | o->object.type != OBJECT_FIELD_HASH_TABLE) | |
1656 | return 0; | |
fb9a24b6 LP |
1657 | |
1658 | return (le64toh(o->object.size) - offsetof(Object, hash_table.items)) / sizeof(HashItem); | |
1659 | } | |
1660 | ||
de190aef | 1661 | static int link_entry_into_array(JournalFile *f, |
4fd052ae FC |
1662 | le64_t *first, |
1663 | le64_t *idx, | |
de190aef | 1664 | uint64_t p) { |
cec736d2 | 1665 | int r; |
de190aef LP |
1666 | uint64_t n = 0, ap = 0, q, i, a, hidx; |
1667 | Object *o; | |
1668 | ||
cec736d2 | 1669 | assert(f); |
c88cc6af | 1670 | assert(f->header); |
de190aef LP |
1671 | assert(first); |
1672 | assert(idx); | |
1673 | assert(p > 0); | |
cec736d2 | 1674 | |
de190aef LP |
1675 | a = le64toh(*first); |
1676 | i = hidx = le64toh(*idx); | |
1677 | while (a > 0) { | |
1678 | ||
1679 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); | |
1680 | if (r < 0) | |
1681 | return r; | |
cec736d2 | 1682 | |
de190aef LP |
1683 | n = journal_file_entry_array_n_items(o); |
1684 | if (i < n) { | |
1685 | o->entry_array.items[i] = htole64(p); | |
1686 | *idx = htole64(hidx + 1); | |
1687 | return 0; | |
1688 | } | |
cec736d2 | 1689 | |
de190aef LP |
1690 | i -= n; |
1691 | ap = a; | |
1692 | a = le64toh(o->entry_array.next_entry_array_offset); | |
1693 | } | |
1694 | ||
1695 | if (hidx > n) | |
1696 | n = (hidx+1) * 2; | |
1697 | else | |
1698 | n = n * 2; | |
1699 | ||
1700 | if (n < 4) | |
1701 | n = 4; | |
1702 | ||
1703 | r = journal_file_append_object(f, OBJECT_ENTRY_ARRAY, | |
1704 | offsetof(Object, entry_array.items) + n * sizeof(uint64_t), | |
1705 | &o, &q); | |
cec736d2 LP |
1706 | if (r < 0) |
1707 | return r; | |
1708 | ||
feb12d3e | 1709 | #ifdef HAVE_GCRYPT |
5996c7c2 | 1710 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, o, q); |
b0af6f41 LP |
1711 | if (r < 0) |
1712 | return r; | |
feb12d3e | 1713 | #endif |
b0af6f41 | 1714 | |
de190aef | 1715 | o->entry_array.items[i] = htole64(p); |
cec736d2 | 1716 | |
de190aef | 1717 | if (ap == 0) |
7be3aa17 | 1718 | *first = htole64(q); |
cec736d2 | 1719 | else { |
de190aef | 1720 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, ap, &o); |
cec736d2 LP |
1721 | if (r < 0) |
1722 | return r; | |
1723 | ||
de190aef LP |
1724 | o->entry_array.next_entry_array_offset = htole64(q); |
1725 | } | |
cec736d2 | 1726 | |
2dee23eb LP |
1727 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
1728 | f->header->n_entry_arrays = htole64(le64toh(f->header->n_entry_arrays) + 1); | |
1729 | ||
de190aef LP |
1730 | *idx = htole64(hidx + 1); |
1731 | ||
1732 | return 0; | |
1733 | } | |
cec736d2 | 1734 | |
de190aef | 1735 | static int link_entry_into_array_plus_one(JournalFile *f, |
4fd052ae FC |
1736 | le64_t *extra, |
1737 | le64_t *first, | |
1738 | le64_t *idx, | |
de190aef LP |
1739 | uint64_t p) { |
1740 | ||
1741 | int r; | |
1742 | ||
1743 | assert(f); | |
1744 | assert(extra); | |
1745 | assert(first); | |
1746 | assert(idx); | |
1747 | assert(p > 0); | |
1748 | ||
1749 | if (*idx == 0) | |
1750 | *extra = htole64(p); | |
1751 | else { | |
4fd052ae | 1752 | le64_t i; |
de190aef | 1753 | |
7be3aa17 | 1754 | i = htole64(le64toh(*idx) - 1); |
de190aef LP |
1755 | r = link_entry_into_array(f, first, &i, p); |
1756 | if (r < 0) | |
1757 | return r; | |
cec736d2 LP |
1758 | } |
1759 | ||
de190aef LP |
1760 | *idx = htole64(le64toh(*idx) + 1); |
1761 | return 0; | |
1762 | } | |
1763 | ||
1764 | static int journal_file_link_entry_item(JournalFile *f, Object *o, uint64_t offset, uint64_t i) { | |
1765 | uint64_t p; | |
1766 | int r; | |
1767 | assert(f); | |
1768 | assert(o); | |
1769 | assert(offset > 0); | |
1770 | ||
1771 | p = le64toh(o->entry.items[i].object_offset); | |
1772 | if (p == 0) | |
1773 | return -EINVAL; | |
1774 | ||
1775 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
cec736d2 LP |
1776 | if (r < 0) |
1777 | return r; | |
1778 | ||
de190aef LP |
1779 | return link_entry_into_array_plus_one(f, |
1780 | &o->data.entry_offset, | |
1781 | &o->data.entry_array_offset, | |
1782 | &o->data.n_entries, | |
1783 | offset); | |
cec736d2 LP |
1784 | } |
1785 | ||
1786 | static int journal_file_link_entry(JournalFile *f, Object *o, uint64_t offset) { | |
de190aef | 1787 | uint64_t n, i; |
cec736d2 LP |
1788 | int r; |
1789 | ||
1790 | assert(f); | |
c88cc6af | 1791 | assert(f->header); |
cec736d2 LP |
1792 | assert(o); |
1793 | assert(offset > 0); | |
b588975f LP |
1794 | |
1795 | if (o->object.type != OBJECT_ENTRY) | |
1796 | return -EINVAL; | |
cec736d2 | 1797 | |
b788cc23 LP |
1798 | __sync_synchronize(); |
1799 | ||
cec736d2 | 1800 | /* Link up the entry itself */ |
de190aef LP |
1801 | r = link_entry_into_array(f, |
1802 | &f->header->entry_array_offset, | |
1803 | &f->header->n_entries, | |
1804 | offset); | |
1805 | if (r < 0) | |
1806 | return r; | |
cec736d2 | 1807 | |
507f22bd | 1808 | /* log_debug("=> %s seqnr=%"PRIu64" n_entries=%"PRIu64, f->path, o->entry.seqnum, f->header->n_entries); */ |
cec736d2 | 1809 | |
de190aef | 1810 | if (f->header->head_entry_realtime == 0) |
0ac38b70 | 1811 | f->header->head_entry_realtime = o->entry.realtime; |
cec736d2 | 1812 | |
0ac38b70 | 1813 | f->header->tail_entry_realtime = o->entry.realtime; |
de190aef LP |
1814 | f->header->tail_entry_monotonic = o->entry.monotonic; |
1815 | ||
1816 | f->tail_entry_monotonic_valid = true; | |
cec736d2 LP |
1817 | |
1818 | /* Link up the items */ | |
1819 | n = journal_file_entry_n_items(o); | |
1820 | for (i = 0; i < n; i++) { | |
1821 | r = journal_file_link_entry_item(f, o, offset, i); | |
1822 | if (r < 0) | |
1823 | return r; | |
1824 | } | |
1825 | ||
cec736d2 LP |
1826 | return 0; |
1827 | } | |
1828 | ||
1829 | static int journal_file_append_entry_internal( | |
1830 | JournalFile *f, | |
1831 | const dual_timestamp *ts, | |
1832 | uint64_t xor_hash, | |
1833 | const EntryItem items[], unsigned n_items, | |
de190aef | 1834 | uint64_t *seqnum, |
cec736d2 LP |
1835 | Object **ret, uint64_t *offset) { |
1836 | uint64_t np; | |
1837 | uint64_t osize; | |
1838 | Object *o; | |
1839 | int r; | |
1840 | ||
1841 | assert(f); | |
c88cc6af | 1842 | assert(f->header); |
cec736d2 | 1843 | assert(items || n_items == 0); |
de190aef | 1844 | assert(ts); |
cec736d2 LP |
1845 | |
1846 | osize = offsetof(Object, entry.items) + (n_items * sizeof(EntryItem)); | |
1847 | ||
de190aef | 1848 | r = journal_file_append_object(f, OBJECT_ENTRY, osize, &o, &np); |
cec736d2 LP |
1849 | if (r < 0) |
1850 | return r; | |
1851 | ||
d98cc1f2 | 1852 | o->entry.seqnum = htole64(journal_file_entry_seqnum(f, seqnum)); |
75f32f04 | 1853 | memcpy_safe(o->entry.items, items, n_items * sizeof(EntryItem)); |
de190aef LP |
1854 | o->entry.realtime = htole64(ts->realtime); |
1855 | o->entry.monotonic = htole64(ts->monotonic); | |
cec736d2 LP |
1856 | o->entry.xor_hash = htole64(xor_hash); |
1857 | o->entry.boot_id = f->header->boot_id; | |
1858 | ||
feb12d3e | 1859 | #ifdef HAVE_GCRYPT |
5996c7c2 | 1860 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY, o, np); |
b0af6f41 LP |
1861 | if (r < 0) |
1862 | return r; | |
feb12d3e | 1863 | #endif |
b0af6f41 | 1864 | |
cec736d2 LP |
1865 | r = journal_file_link_entry(f, o, np); |
1866 | if (r < 0) | |
1867 | return r; | |
1868 | ||
1869 | if (ret) | |
1870 | *ret = o; | |
1871 | ||
1872 | if (offset) | |
1873 | *offset = np; | |
1874 | ||
1875 | return 0; | |
1876 | } | |
1877 | ||
cf244689 | 1878 | void journal_file_post_change(JournalFile *f) { |
50f20cfd LP |
1879 | assert(f); |
1880 | ||
1881 | /* inotify() does not receive IN_MODIFY events from file | |
1882 | * accesses done via mmap(). After each access we hence | |
1883 | * trigger IN_MODIFY by truncating the journal file to its | |
1884 | * current size which triggers IN_MODIFY. */ | |
1885 | ||
bc85bfee LP |
1886 | __sync_synchronize(); |
1887 | ||
50f20cfd | 1888 | if (ftruncate(f->fd, f->last_stat.st_size) < 0) |
e167d7fd | 1889 | log_debug_errno(errno, "Failed to truncate file to its own size: %m"); |
50f20cfd LP |
1890 | } |
1891 | ||
7a24f3bf VC |
1892 | static int post_change_thunk(sd_event_source *timer, uint64_t usec, void *userdata) { |
1893 | assert(userdata); | |
1894 | ||
1895 | journal_file_post_change(userdata); | |
1896 | ||
1897 | return 1; | |
1898 | } | |
1899 | ||
1900 | static void schedule_post_change(JournalFile *f) { | |
1901 | sd_event_source *timer; | |
1902 | int enabled, r; | |
1903 | uint64_t now; | |
1904 | ||
1905 | assert(f); | |
1906 | assert(f->post_change_timer); | |
1907 | ||
1908 | timer = f->post_change_timer; | |
1909 | ||
1910 | r = sd_event_source_get_enabled(timer, &enabled); | |
1911 | if (r < 0) { | |
e167d7fd LP |
1912 | log_debug_errno(r, "Failed to get ftruncate timer state: %m"); |
1913 | goto fail; | |
7a24f3bf VC |
1914 | } |
1915 | ||
1916 | if (enabled == SD_EVENT_ONESHOT) | |
1917 | return; | |
1918 | ||
1919 | r = sd_event_now(sd_event_source_get_event(timer), CLOCK_MONOTONIC, &now); | |
1920 | if (r < 0) { | |
e167d7fd LP |
1921 | log_debug_errno(r, "Failed to get clock's now for scheduling ftruncate: %m"); |
1922 | goto fail; | |
7a24f3bf VC |
1923 | } |
1924 | ||
1925 | r = sd_event_source_set_time(timer, now+f->post_change_timer_period); | |
1926 | if (r < 0) { | |
e167d7fd LP |
1927 | log_debug_errno(r, "Failed to set time for scheduling ftruncate: %m"); |
1928 | goto fail; | |
7a24f3bf VC |
1929 | } |
1930 | ||
1931 | r = sd_event_source_set_enabled(timer, SD_EVENT_ONESHOT); | |
1932 | if (r < 0) { | |
e167d7fd LP |
1933 | log_debug_errno(r, "Failed to enable scheduled ftruncate: %m"); |
1934 | goto fail; | |
7a24f3bf | 1935 | } |
e167d7fd LP |
1936 | |
1937 | return; | |
1938 | ||
1939 | fail: | |
1940 | /* On failure, let's simply post the change immediately. */ | |
1941 | journal_file_post_change(f); | |
7a24f3bf VC |
1942 | } |
1943 | ||
1944 | /* Enable coalesced change posting in a timer on the provided sd_event instance */ | |
1945 | int journal_file_enable_post_change_timer(JournalFile *f, sd_event *e, usec_t t) { | |
1946 | _cleanup_(sd_event_source_unrefp) sd_event_source *timer = NULL; | |
1947 | int r; | |
1948 | ||
1949 | assert(f); | |
1950 | assert_return(!f->post_change_timer, -EINVAL); | |
1951 | assert(e); | |
1952 | assert(t); | |
1953 | ||
1954 | r = sd_event_add_time(e, &timer, CLOCK_MONOTONIC, 0, 0, post_change_thunk, f); | |
1955 | if (r < 0) | |
1956 | return r; | |
1957 | ||
1958 | r = sd_event_source_set_enabled(timer, SD_EVENT_OFF); | |
1959 | if (r < 0) | |
1960 | return r; | |
1961 | ||
1962 | f->post_change_timer = timer; | |
1963 | timer = NULL; | |
1964 | f->post_change_timer_period = t; | |
1965 | ||
1966 | return r; | |
1967 | } | |
1968 | ||
1f2da9ec LP |
1969 | static int entry_item_cmp(const void *_a, const void *_b) { |
1970 | const EntryItem *a = _a, *b = _b; | |
1971 | ||
1972 | if (le64toh(a->object_offset) < le64toh(b->object_offset)) | |
1973 | return -1; | |
1974 | if (le64toh(a->object_offset) > le64toh(b->object_offset)) | |
1975 | return 1; | |
1976 | return 0; | |
1977 | } | |
1978 | ||
de190aef | 1979 | int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const struct iovec iovec[], unsigned n_iovec, uint64_t *seqnum, Object **ret, uint64_t *offset) { |
cec736d2 LP |
1980 | unsigned i; |
1981 | EntryItem *items; | |
1982 | int r; | |
1983 | uint64_t xor_hash = 0; | |
de190aef | 1984 | struct dual_timestamp _ts; |
cec736d2 LP |
1985 | |
1986 | assert(f); | |
c88cc6af | 1987 | assert(f->header); |
cec736d2 LP |
1988 | assert(iovec || n_iovec == 0); |
1989 | ||
de190aef LP |
1990 | if (!ts) { |
1991 | dual_timestamp_get(&_ts); | |
1992 | ts = &_ts; | |
1993 | } | |
1994 | ||
feb12d3e | 1995 | #ifdef HAVE_GCRYPT |
7560fffc LP |
1996 | r = journal_file_maybe_append_tag(f, ts->realtime); |
1997 | if (r < 0) | |
1998 | return r; | |
feb12d3e | 1999 | #endif |
7560fffc | 2000 | |
64825d3c | 2001 | /* alloca() can't take 0, hence let's allocate at least one */ |
9607d947 | 2002 | items = alloca(sizeof(EntryItem) * MAX(1u, n_iovec)); |
cec736d2 LP |
2003 | |
2004 | for (i = 0; i < n_iovec; i++) { | |
2005 | uint64_t p; | |
2006 | Object *o; | |
2007 | ||
2008 | r = journal_file_append_data(f, iovec[i].iov_base, iovec[i].iov_len, &o, &p); | |
2009 | if (r < 0) | |
cf244689 | 2010 | return r; |
cec736d2 LP |
2011 | |
2012 | xor_hash ^= le64toh(o->data.hash); | |
2013 | items[i].object_offset = htole64(p); | |
de7b95cd | 2014 | items[i].hash = o->data.hash; |
cec736d2 LP |
2015 | } |
2016 | ||
1f2da9ec LP |
2017 | /* Order by the position on disk, in order to improve seek |
2018 | * times for rotating media. */ | |
7ff7394d | 2019 | qsort_safe(items, n_iovec, sizeof(EntryItem), entry_item_cmp); |
1f2da9ec | 2020 | |
de190aef | 2021 | r = journal_file_append_entry_internal(f, ts, xor_hash, items, n_iovec, seqnum, ret, offset); |
cec736d2 | 2022 | |
fa6ac760 LP |
2023 | /* If the memory mapping triggered a SIGBUS then we return an |
2024 | * IO error and ignore the error code passed down to us, since | |
2025 | * it is very likely just an effect of a nullified replacement | |
2026 | * mapping page */ | |
2027 | ||
be7cdd8e | 2028 | if (mmap_cache_got_sigbus(f->mmap, f->cache_fd)) |
fa6ac760 LP |
2029 | r = -EIO; |
2030 | ||
7a24f3bf VC |
2031 | if (f->post_change_timer) |
2032 | schedule_post_change(f); | |
2033 | else | |
2034 | journal_file_post_change(f); | |
50f20cfd | 2035 | |
cec736d2 LP |
2036 | return r; |
2037 | } | |
2038 | ||
a4bcff5b | 2039 | typedef struct ChainCacheItem { |
fb099c8d | 2040 | uint64_t first; /* the array at the beginning of the chain */ |
a4bcff5b LP |
2041 | uint64_t array; /* the cached array */ |
2042 | uint64_t begin; /* the first item in the cached array */ | |
2043 | uint64_t total; /* the total number of items in all arrays before this one in the chain */ | |
f268980d | 2044 | uint64_t last_index; /* the last index we looked at, to optimize locality when bisecting */ |
a4bcff5b LP |
2045 | } ChainCacheItem; |
2046 | ||
2047 | static void chain_cache_put( | |
4743015d | 2048 | OrderedHashmap *h, |
a4bcff5b LP |
2049 | ChainCacheItem *ci, |
2050 | uint64_t first, | |
2051 | uint64_t array, | |
2052 | uint64_t begin, | |
f268980d LP |
2053 | uint64_t total, |
2054 | uint64_t last_index) { | |
a4bcff5b LP |
2055 | |
2056 | if (!ci) { | |
34741aa3 LP |
2057 | /* If the chain item to cache for this chain is the |
2058 | * first one it's not worth caching anything */ | |
2059 | if (array == first) | |
2060 | return; | |
2061 | ||
29433089 | 2062 | if (ordered_hashmap_size(h) >= CHAIN_CACHE_MAX) { |
4743015d | 2063 | ci = ordered_hashmap_steal_first(h); |
29433089 LP |
2064 | assert(ci); |
2065 | } else { | |
a4bcff5b LP |
2066 | ci = new(ChainCacheItem, 1); |
2067 | if (!ci) | |
2068 | return; | |
2069 | } | |
2070 | ||
2071 | ci->first = first; | |
2072 | ||
4743015d | 2073 | if (ordered_hashmap_put(h, &ci->first, ci) < 0) { |
a4bcff5b LP |
2074 | free(ci); |
2075 | return; | |
2076 | } | |
2077 | } else | |
2078 | assert(ci->first == first); | |
2079 | ||
2080 | ci->array = array; | |
2081 | ci->begin = begin; | |
2082 | ci->total = total; | |
f268980d | 2083 | ci->last_index = last_index; |
a4bcff5b LP |
2084 | } |
2085 | ||
f268980d LP |
2086 | static int generic_array_get( |
2087 | JournalFile *f, | |
2088 | uint64_t first, | |
2089 | uint64_t i, | |
2090 | Object **ret, uint64_t *offset) { | |
de190aef | 2091 | |
cec736d2 | 2092 | Object *o; |
a4bcff5b | 2093 | uint64_t p = 0, a, t = 0; |
cec736d2 | 2094 | int r; |
a4bcff5b | 2095 | ChainCacheItem *ci; |
cec736d2 LP |
2096 | |
2097 | assert(f); | |
2098 | ||
de190aef | 2099 | a = first; |
a4bcff5b LP |
2100 | |
2101 | /* Try the chain cache first */ | |
4743015d | 2102 | ci = ordered_hashmap_get(f->chain_cache, &first); |
a4bcff5b LP |
2103 | if (ci && i > ci->total) { |
2104 | a = ci->array; | |
2105 | i -= ci->total; | |
2106 | t = ci->total; | |
2107 | } | |
2108 | ||
de190aef | 2109 | while (a > 0) { |
a4bcff5b | 2110 | uint64_t k; |
cec736d2 | 2111 | |
de190aef LP |
2112 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); |
2113 | if (r < 0) | |
2114 | return r; | |
cec736d2 | 2115 | |
a4bcff5b LP |
2116 | k = journal_file_entry_array_n_items(o); |
2117 | if (i < k) { | |
de190aef | 2118 | p = le64toh(o->entry_array.items[i]); |
a4bcff5b | 2119 | goto found; |
cec736d2 LP |
2120 | } |
2121 | ||
a4bcff5b LP |
2122 | i -= k; |
2123 | t += k; | |
de190aef LP |
2124 | a = le64toh(o->entry_array.next_entry_array_offset); |
2125 | } | |
2126 | ||
a4bcff5b LP |
2127 | return 0; |
2128 | ||
2129 | found: | |
2130 | /* Let's cache this item for the next invocation */ | |
af13a6b0 | 2131 | chain_cache_put(f->chain_cache, ci, first, a, le64toh(o->entry_array.items[0]), t, i); |
de190aef LP |
2132 | |
2133 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
2134 | if (r < 0) | |
2135 | return r; | |
2136 | ||
2137 | if (ret) | |
2138 | *ret = o; | |
2139 | ||
2140 | if (offset) | |
2141 | *offset = p; | |
2142 | ||
2143 | return 1; | |
2144 | } | |
2145 | ||
f268980d LP |
2146 | static int generic_array_get_plus_one( |
2147 | JournalFile *f, | |
2148 | uint64_t extra, | |
2149 | uint64_t first, | |
2150 | uint64_t i, | |
2151 | Object **ret, uint64_t *offset) { | |
de190aef LP |
2152 | |
2153 | Object *o; | |
2154 | ||
2155 | assert(f); | |
2156 | ||
2157 | if (i == 0) { | |
2158 | int r; | |
2159 | ||
2160 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
cec736d2 LP |
2161 | if (r < 0) |
2162 | return r; | |
2163 | ||
de190aef LP |
2164 | if (ret) |
2165 | *ret = o; | |
cec736d2 | 2166 | |
de190aef LP |
2167 | if (offset) |
2168 | *offset = extra; | |
cec736d2 | 2169 | |
de190aef | 2170 | return 1; |
cec736d2 LP |
2171 | } |
2172 | ||
de190aef LP |
2173 | return generic_array_get(f, first, i-1, ret, offset); |
2174 | } | |
cec736d2 | 2175 | |
de190aef LP |
2176 | enum { |
2177 | TEST_FOUND, | |
2178 | TEST_LEFT, | |
2179 | TEST_RIGHT | |
2180 | }; | |
cec736d2 | 2181 | |
f268980d LP |
2182 | static int generic_array_bisect( |
2183 | JournalFile *f, | |
2184 | uint64_t first, | |
2185 | uint64_t n, | |
2186 | uint64_t needle, | |
2187 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
2188 | direction_t direction, | |
2189 | Object **ret, | |
2190 | uint64_t *offset, | |
2191 | uint64_t *idx) { | |
2192 | ||
2193 | uint64_t a, p, t = 0, i = 0, last_p = 0, last_index = (uint64_t) -1; | |
de190aef LP |
2194 | bool subtract_one = false; |
2195 | Object *o, *array = NULL; | |
2196 | int r; | |
a4bcff5b | 2197 | ChainCacheItem *ci; |
cec736d2 | 2198 | |
de190aef LP |
2199 | assert(f); |
2200 | assert(test_object); | |
cec736d2 | 2201 | |
a4bcff5b | 2202 | /* Start with the first array in the chain */ |
de190aef | 2203 | a = first; |
a4bcff5b | 2204 | |
4743015d | 2205 | ci = ordered_hashmap_get(f->chain_cache, &first); |
a4bcff5b LP |
2206 | if (ci && n > ci->total) { |
2207 | /* Ah, we have iterated this bisection array chain | |
2208 | * previously! Let's see if we can skip ahead in the | |
2209 | * chain, as far as the last time. But we can't jump | |
2210 | * backwards in the chain, so let's check that | |
2211 | * first. */ | |
2212 | ||
2213 | r = test_object(f, ci->begin, needle); | |
2214 | if (r < 0) | |
2215 | return r; | |
2216 | ||
2217 | if (r == TEST_LEFT) { | |
f268980d | 2218 | /* OK, what we are looking for is right of the |
a4bcff5b LP |
2219 | * begin of this EntryArray, so let's jump |
2220 | * straight to previously cached array in the | |
2221 | * chain */ | |
2222 | ||
2223 | a = ci->array; | |
2224 | n -= ci->total; | |
2225 | t = ci->total; | |
f268980d | 2226 | last_index = ci->last_index; |
a4bcff5b LP |
2227 | } |
2228 | } | |
2229 | ||
de190aef LP |
2230 | while (a > 0) { |
2231 | uint64_t left, right, k, lp; | |
2232 | ||
2233 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &array); | |
cec736d2 LP |
2234 | if (r < 0) |
2235 | return r; | |
2236 | ||
de190aef LP |
2237 | k = journal_file_entry_array_n_items(array); |
2238 | right = MIN(k, n); | |
2239 | if (right <= 0) | |
2240 | return 0; | |
cec736d2 | 2241 | |
de190aef LP |
2242 | i = right - 1; |
2243 | lp = p = le64toh(array->entry_array.items[i]); | |
2244 | if (p <= 0) | |
bee6a291 LP |
2245 | r = -EBADMSG; |
2246 | else | |
2247 | r = test_object(f, p, needle); | |
2248 | if (r == -EBADMSG) { | |
2249 | log_debug_errno(r, "Encountered invalid entry while bisecting, cutting algorithm short. (1)"); | |
2250 | n = i; | |
2251 | continue; | |
2252 | } | |
de190aef LP |
2253 | if (r < 0) |
2254 | return r; | |
cec736d2 | 2255 | |
de190aef LP |
2256 | if (r == TEST_FOUND) |
2257 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
2258 | ||
2259 | if (r == TEST_RIGHT) { | |
2260 | left = 0; | |
2261 | right -= 1; | |
f268980d LP |
2262 | |
2263 | if (last_index != (uint64_t) -1) { | |
2264 | assert(last_index <= right); | |
2265 | ||
2266 | /* If we cached the last index we | |
2267 | * looked at, let's try to not to jump | |
2268 | * too wildly around and see if we can | |
2269 | * limit the range to look at early to | |
2270 | * the immediate neighbors of the last | |
2271 | * index we looked at. */ | |
2272 | ||
2273 | if (last_index > 0) { | |
2274 | uint64_t x = last_index - 1; | |
2275 | ||
2276 | p = le64toh(array->entry_array.items[x]); | |
2277 | if (p <= 0) | |
2278 | return -EBADMSG; | |
2279 | ||
2280 | r = test_object(f, p, needle); | |
2281 | if (r < 0) | |
2282 | return r; | |
2283 | ||
2284 | if (r == TEST_FOUND) | |
2285 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
2286 | ||
2287 | if (r == TEST_RIGHT) | |
2288 | right = x; | |
2289 | else | |
2290 | left = x + 1; | |
2291 | } | |
2292 | ||
2293 | if (last_index < right) { | |
2294 | uint64_t y = last_index + 1; | |
2295 | ||
2296 | p = le64toh(array->entry_array.items[y]); | |
2297 | if (p <= 0) | |
2298 | return -EBADMSG; | |
2299 | ||
2300 | r = test_object(f, p, needle); | |
2301 | if (r < 0) | |
2302 | return r; | |
2303 | ||
2304 | if (r == TEST_FOUND) | |
2305 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
2306 | ||
2307 | if (r == TEST_RIGHT) | |
2308 | right = y; | |
2309 | else | |
2310 | left = y + 1; | |
2311 | } | |
f268980d LP |
2312 | } |
2313 | ||
de190aef LP |
2314 | for (;;) { |
2315 | if (left == right) { | |
2316 | if (direction == DIRECTION_UP) | |
2317 | subtract_one = true; | |
2318 | ||
2319 | i = left; | |
2320 | goto found; | |
2321 | } | |
2322 | ||
2323 | assert(left < right); | |
de190aef | 2324 | i = (left + right) / 2; |
f268980d | 2325 | |
de190aef LP |
2326 | p = le64toh(array->entry_array.items[i]); |
2327 | if (p <= 0) | |
bee6a291 LP |
2328 | r = -EBADMSG; |
2329 | else | |
2330 | r = test_object(f, p, needle); | |
2331 | if (r == -EBADMSG) { | |
2332 | log_debug_errno(r, "Encountered invalid entry while bisecting, cutting algorithm short. (2)"); | |
2333 | right = n = i; | |
2334 | continue; | |
2335 | } | |
de190aef LP |
2336 | if (r < 0) |
2337 | return r; | |
cec736d2 | 2338 | |
de190aef LP |
2339 | if (r == TEST_FOUND) |
2340 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
2341 | ||
2342 | if (r == TEST_RIGHT) | |
2343 | right = i; | |
2344 | else | |
2345 | left = i + 1; | |
2346 | } | |
2347 | } | |
2348 | ||
2173cbf8 | 2349 | if (k >= n) { |
cbdca852 LP |
2350 | if (direction == DIRECTION_UP) { |
2351 | i = n; | |
2352 | subtract_one = true; | |
2353 | goto found; | |
2354 | } | |
2355 | ||
cec736d2 | 2356 | return 0; |
cbdca852 | 2357 | } |
cec736d2 | 2358 | |
de190aef LP |
2359 | last_p = lp; |
2360 | ||
2361 | n -= k; | |
2362 | t += k; | |
f268980d | 2363 | last_index = (uint64_t) -1; |
de190aef | 2364 | a = le64toh(array->entry_array.next_entry_array_offset); |
cec736d2 LP |
2365 | } |
2366 | ||
2367 | return 0; | |
de190aef LP |
2368 | |
2369 | found: | |
2370 | if (subtract_one && t == 0 && i == 0) | |
2371 | return 0; | |
2372 | ||
a4bcff5b | 2373 | /* Let's cache this item for the next invocation */ |
af13a6b0 | 2374 | chain_cache_put(f->chain_cache, ci, first, a, le64toh(array->entry_array.items[0]), t, subtract_one ? (i > 0 ? i-1 : (uint64_t) -1) : i); |
a4bcff5b | 2375 | |
de190aef LP |
2376 | if (subtract_one && i == 0) |
2377 | p = last_p; | |
2378 | else if (subtract_one) | |
2379 | p = le64toh(array->entry_array.items[i-1]); | |
2380 | else | |
2381 | p = le64toh(array->entry_array.items[i]); | |
2382 | ||
2383 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
2384 | if (r < 0) | |
2385 | return r; | |
2386 | ||
2387 | if (ret) | |
2388 | *ret = o; | |
2389 | ||
2390 | if (offset) | |
2391 | *offset = p; | |
2392 | ||
2393 | if (idx) | |
cbdca852 | 2394 | *idx = t + i + (subtract_one ? -1 : 0); |
de190aef LP |
2395 | |
2396 | return 1; | |
cec736d2 LP |
2397 | } |
2398 | ||
f268980d LP |
2399 | static int generic_array_bisect_plus_one( |
2400 | JournalFile *f, | |
2401 | uint64_t extra, | |
2402 | uint64_t first, | |
2403 | uint64_t n, | |
2404 | uint64_t needle, | |
2405 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
2406 | direction_t direction, | |
2407 | Object **ret, | |
2408 | uint64_t *offset, | |
2409 | uint64_t *idx) { | |
de190aef | 2410 | |
cec736d2 | 2411 | int r; |
cbdca852 LP |
2412 | bool step_back = false; |
2413 | Object *o; | |
cec736d2 LP |
2414 | |
2415 | assert(f); | |
de190aef | 2416 | assert(test_object); |
cec736d2 | 2417 | |
de190aef LP |
2418 | if (n <= 0) |
2419 | return 0; | |
cec736d2 | 2420 | |
de190aef LP |
2421 | /* This bisects the array in object 'first', but first checks |
2422 | * an extra */ | |
de190aef LP |
2423 | r = test_object(f, extra, needle); |
2424 | if (r < 0) | |
2425 | return r; | |
a536e261 LP |
2426 | |
2427 | if (r == TEST_FOUND) | |
2428 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
2429 | ||
cbdca852 LP |
2430 | /* if we are looking with DIRECTION_UP then we need to first |
2431 | see if in the actual array there is a matching entry, and | |
2432 | return the last one of that. But if there isn't any we need | |
2433 | to return this one. Hence remember this, and return it | |
2434 | below. */ | |
2435 | if (r == TEST_LEFT) | |
2436 | step_back = direction == DIRECTION_UP; | |
de190aef | 2437 | |
cbdca852 LP |
2438 | if (r == TEST_RIGHT) { |
2439 | if (direction == DIRECTION_DOWN) | |
2440 | goto found; | |
2441 | else | |
2442 | return 0; | |
a536e261 | 2443 | } |
cec736d2 | 2444 | |
de190aef LP |
2445 | r = generic_array_bisect(f, first, n-1, needle, test_object, direction, ret, offset, idx); |
2446 | ||
cbdca852 LP |
2447 | if (r == 0 && step_back) |
2448 | goto found; | |
2449 | ||
ecf68b1d | 2450 | if (r > 0 && idx) |
313cefa1 | 2451 | (*idx)++; |
de190aef LP |
2452 | |
2453 | return r; | |
cbdca852 LP |
2454 | |
2455 | found: | |
2456 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
2457 | if (r < 0) | |
2458 | return r; | |
2459 | ||
2460 | if (ret) | |
2461 | *ret = o; | |
2462 | ||
2463 | if (offset) | |
2464 | *offset = extra; | |
2465 | ||
2466 | if (idx) | |
2467 | *idx = 0; | |
2468 | ||
2469 | return 1; | |
2470 | } | |
2471 | ||
44a6b1b6 | 2472 | _pure_ static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) { |
cbdca852 LP |
2473 | assert(f); |
2474 | assert(p > 0); | |
2475 | ||
2476 | if (p == needle) | |
2477 | return TEST_FOUND; | |
2478 | else if (p < needle) | |
2479 | return TEST_LEFT; | |
2480 | else | |
2481 | return TEST_RIGHT; | |
2482 | } | |
2483 | ||
de190aef LP |
2484 | static int test_object_seqnum(JournalFile *f, uint64_t p, uint64_t needle) { |
2485 | Object *o; | |
2486 | int r; | |
2487 | ||
2488 | assert(f); | |
2489 | assert(p > 0); | |
2490 | ||
2491 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
cec736d2 LP |
2492 | if (r < 0) |
2493 | return r; | |
2494 | ||
de190aef LP |
2495 | if (le64toh(o->entry.seqnum) == needle) |
2496 | return TEST_FOUND; | |
2497 | else if (le64toh(o->entry.seqnum) < needle) | |
2498 | return TEST_LEFT; | |
2499 | else | |
2500 | return TEST_RIGHT; | |
2501 | } | |
cec736d2 | 2502 | |
de190aef LP |
2503 | int journal_file_move_to_entry_by_seqnum( |
2504 | JournalFile *f, | |
2505 | uint64_t seqnum, | |
2506 | direction_t direction, | |
2507 | Object **ret, | |
2508 | uint64_t *offset) { | |
c88cc6af VC |
2509 | assert(f); |
2510 | assert(f->header); | |
de190aef LP |
2511 | |
2512 | return generic_array_bisect(f, | |
2513 | le64toh(f->header->entry_array_offset), | |
2514 | le64toh(f->header->n_entries), | |
2515 | seqnum, | |
2516 | test_object_seqnum, | |
2517 | direction, | |
2518 | ret, offset, NULL); | |
2519 | } | |
cec736d2 | 2520 | |
de190aef LP |
2521 | static int test_object_realtime(JournalFile *f, uint64_t p, uint64_t needle) { |
2522 | Object *o; | |
2523 | int r; | |
2524 | ||
2525 | assert(f); | |
2526 | assert(p > 0); | |
2527 | ||
2528 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
2529 | if (r < 0) | |
2530 | return r; | |
2531 | ||
2532 | if (le64toh(o->entry.realtime) == needle) | |
2533 | return TEST_FOUND; | |
2534 | else if (le64toh(o->entry.realtime) < needle) | |
2535 | return TEST_LEFT; | |
2536 | else | |
2537 | return TEST_RIGHT; | |
cec736d2 LP |
2538 | } |
2539 | ||
de190aef LP |
2540 | int journal_file_move_to_entry_by_realtime( |
2541 | JournalFile *f, | |
2542 | uint64_t realtime, | |
2543 | direction_t direction, | |
2544 | Object **ret, | |
2545 | uint64_t *offset) { | |
c88cc6af VC |
2546 | assert(f); |
2547 | assert(f->header); | |
de190aef LP |
2548 | |
2549 | return generic_array_bisect(f, | |
2550 | le64toh(f->header->entry_array_offset), | |
2551 | le64toh(f->header->n_entries), | |
2552 | realtime, | |
2553 | test_object_realtime, | |
2554 | direction, | |
2555 | ret, offset, NULL); | |
2556 | } | |
2557 | ||
2558 | static int test_object_monotonic(JournalFile *f, uint64_t p, uint64_t needle) { | |
2559 | Object *o; | |
2560 | int r; | |
2561 | ||
2562 | assert(f); | |
2563 | assert(p > 0); | |
2564 | ||
2565 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
2566 | if (r < 0) | |
2567 | return r; | |
2568 | ||
2569 | if (le64toh(o->entry.monotonic) == needle) | |
2570 | return TEST_FOUND; | |
2571 | else if (le64toh(o->entry.monotonic) < needle) | |
2572 | return TEST_LEFT; | |
2573 | else | |
2574 | return TEST_RIGHT; | |
2575 | } | |
2576 | ||
2a560338 | 2577 | static int find_data_object_by_boot_id( |
47838ab3 ZJS |
2578 | JournalFile *f, |
2579 | sd_id128_t boot_id, | |
2580 | Object **o, | |
2581 | uint64_t *b) { | |
2a560338 | 2582 | |
47838ab3 ZJS |
2583 | char t[sizeof("_BOOT_ID=")-1 + 32 + 1] = "_BOOT_ID="; |
2584 | ||
2585 | sd_id128_to_string(boot_id, t + 9); | |
2586 | return journal_file_find_data_object(f, t, sizeof(t) - 1, o, b); | |
2587 | } | |
2588 | ||
de190aef LP |
2589 | int journal_file_move_to_entry_by_monotonic( |
2590 | JournalFile *f, | |
2591 | sd_id128_t boot_id, | |
2592 | uint64_t monotonic, | |
2593 | direction_t direction, | |
2594 | Object **ret, | |
2595 | uint64_t *offset) { | |
2596 | ||
de190aef LP |
2597 | Object *o; |
2598 | int r; | |
2599 | ||
cbdca852 | 2600 | assert(f); |
de190aef | 2601 | |
47838ab3 | 2602 | r = find_data_object_by_boot_id(f, boot_id, &o, NULL); |
de190aef LP |
2603 | if (r < 0) |
2604 | return r; | |
cbdca852 | 2605 | if (r == 0) |
de190aef LP |
2606 | return -ENOENT; |
2607 | ||
2608 | return generic_array_bisect_plus_one(f, | |
2609 | le64toh(o->data.entry_offset), | |
2610 | le64toh(o->data.entry_array_offset), | |
2611 | le64toh(o->data.n_entries), | |
2612 | monotonic, | |
2613 | test_object_monotonic, | |
2614 | direction, | |
2615 | ret, offset, NULL); | |
2616 | } | |
2617 | ||
1fc605b0 | 2618 | void journal_file_reset_location(JournalFile *f) { |
6573ef05 | 2619 | f->location_type = LOCATION_HEAD; |
1fc605b0 | 2620 | f->current_offset = 0; |
6573ef05 MS |
2621 | f->current_seqnum = 0; |
2622 | f->current_realtime = 0; | |
2623 | f->current_monotonic = 0; | |
2624 | zero(f->current_boot_id); | |
2625 | f->current_xor_hash = 0; | |
2626 | } | |
2627 | ||
950c07d4 | 2628 | void journal_file_save_location(JournalFile *f, Object *o, uint64_t offset) { |
6573ef05 MS |
2629 | f->location_type = LOCATION_SEEK; |
2630 | f->current_offset = offset; | |
2631 | f->current_seqnum = le64toh(o->entry.seqnum); | |
2632 | f->current_realtime = le64toh(o->entry.realtime); | |
2633 | f->current_monotonic = le64toh(o->entry.monotonic); | |
2634 | f->current_boot_id = o->entry.boot_id; | |
2635 | f->current_xor_hash = le64toh(o->entry.xor_hash); | |
1fc605b0 MS |
2636 | } |
2637 | ||
d8ae66d7 MS |
2638 | int journal_file_compare_locations(JournalFile *af, JournalFile *bf) { |
2639 | assert(af); | |
c88cc6af | 2640 | assert(af->header); |
d8ae66d7 | 2641 | assert(bf); |
c88cc6af | 2642 | assert(bf->header); |
d8ae66d7 MS |
2643 | assert(af->location_type == LOCATION_SEEK); |
2644 | assert(bf->location_type == LOCATION_SEEK); | |
2645 | ||
2646 | /* If contents and timestamps match, these entries are | |
2647 | * identical, even if the seqnum does not match */ | |
2648 | if (sd_id128_equal(af->current_boot_id, bf->current_boot_id) && | |
2649 | af->current_monotonic == bf->current_monotonic && | |
2650 | af->current_realtime == bf->current_realtime && | |
2651 | af->current_xor_hash == bf->current_xor_hash) | |
2652 | return 0; | |
2653 | ||
2654 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { | |
2655 | ||
2656 | /* If this is from the same seqnum source, compare | |
2657 | * seqnums */ | |
2658 | if (af->current_seqnum < bf->current_seqnum) | |
2659 | return -1; | |
2660 | if (af->current_seqnum > bf->current_seqnum) | |
2661 | return 1; | |
2662 | ||
2663 | /* Wow! This is weird, different data but the same | |
2664 | * seqnums? Something is borked, but let's make the | |
2665 | * best of it and compare by time. */ | |
2666 | } | |
2667 | ||
2668 | if (sd_id128_equal(af->current_boot_id, bf->current_boot_id)) { | |
2669 | ||
2670 | /* If the boot id matches, compare monotonic time */ | |
2671 | if (af->current_monotonic < bf->current_monotonic) | |
2672 | return -1; | |
2673 | if (af->current_monotonic > bf->current_monotonic) | |
2674 | return 1; | |
2675 | } | |
2676 | ||
2677 | /* Otherwise, compare UTC time */ | |
2678 | if (af->current_realtime < bf->current_realtime) | |
2679 | return -1; | |
2680 | if (af->current_realtime > bf->current_realtime) | |
2681 | return 1; | |
2682 | ||
2683 | /* Finally, compare by contents */ | |
2684 | if (af->current_xor_hash < bf->current_xor_hash) | |
2685 | return -1; | |
2686 | if (af->current_xor_hash > bf->current_xor_hash) | |
2687 | return 1; | |
2688 | ||
2689 | return 0; | |
2690 | } | |
2691 | ||
aa598ba5 LP |
2692 | static int bump_array_index(uint64_t *i, direction_t direction, uint64_t n) { |
2693 | ||
2694 | /* Increase or decrease the specified index, in the right direction. */ | |
2695 | ||
2696 | if (direction == DIRECTION_DOWN) { | |
2697 | if (*i >= n - 1) | |
2698 | return 0; | |
2699 | ||
2700 | (*i) ++; | |
2701 | } else { | |
2702 | if (*i <= 0) | |
2703 | return 0; | |
2704 | ||
2705 | (*i) --; | |
2706 | } | |
2707 | ||
2708 | return 1; | |
2709 | } | |
2710 | ||
b6da4ed0 LP |
2711 | static bool check_properly_ordered(uint64_t new_offset, uint64_t old_offset, direction_t direction) { |
2712 | ||
2713 | /* Consider it an error if any of the two offsets is uninitialized */ | |
2714 | if (old_offset == 0 || new_offset == 0) | |
2715 | return false; | |
2716 | ||
2717 | /* If we go down, the new offset must be larger than the old one. */ | |
2718 | return direction == DIRECTION_DOWN ? | |
2719 | new_offset > old_offset : | |
2720 | new_offset < old_offset; | |
2721 | } | |
2722 | ||
de190aef LP |
2723 | int journal_file_next_entry( |
2724 | JournalFile *f, | |
f534928a | 2725 | uint64_t p, |
de190aef LP |
2726 | direction_t direction, |
2727 | Object **ret, uint64_t *offset) { | |
2728 | ||
fb099c8d | 2729 | uint64_t i, n, ofs; |
cec736d2 LP |
2730 | int r; |
2731 | ||
2732 | assert(f); | |
c88cc6af | 2733 | assert(f->header); |
de190aef LP |
2734 | |
2735 | n = le64toh(f->header->n_entries); | |
2736 | if (n <= 0) | |
2737 | return 0; | |
cec736d2 | 2738 | |
f534928a | 2739 | if (p == 0) |
de190aef | 2740 | i = direction == DIRECTION_DOWN ? 0 : n - 1; |
cec736d2 | 2741 | else { |
de190aef LP |
2742 | r = generic_array_bisect(f, |
2743 | le64toh(f->header->entry_array_offset), | |
2744 | le64toh(f->header->n_entries), | |
2745 | p, | |
2746 | test_object_offset, | |
2747 | DIRECTION_DOWN, | |
2748 | NULL, NULL, | |
2749 | &i); | |
2750 | if (r <= 0) | |
2751 | return r; | |
2752 | ||
aa598ba5 LP |
2753 | r = bump_array_index(&i, direction, n); |
2754 | if (r <= 0) | |
2755 | return r; | |
cec736d2 LP |
2756 | } |
2757 | ||
de190aef | 2758 | /* And jump to it */ |
989793d3 LP |
2759 | for (;;) { |
2760 | r = generic_array_get(f, | |
2761 | le64toh(f->header->entry_array_offset), | |
2762 | i, | |
2763 | ret, &ofs); | |
2764 | if (r > 0) | |
2765 | break; | |
2766 | if (r != -EBADMSG) | |
2767 | return r; | |
2768 | ||
2769 | /* OK, so this entry is borked. Most likely some entry didn't get synced to disk properly, let's see if | |
2770 | * the next one might work for us instead. */ | |
2771 | log_debug_errno(r, "Entry item %" PRIu64 " is bad, skipping over it.", i); | |
2772 | ||
2773 | r = bump_array_index(&i, direction, n); | |
2774 | if (r <= 0) | |
2775 | return r; | |
caeab8f6 | 2776 | } |
fb099c8d | 2777 | |
b6da4ed0 LP |
2778 | /* Ensure our array is properly ordered. */ |
2779 | if (p > 0 && !check_properly_ordered(ofs, p, direction)) { | |
2780 | log_debug("%s: entry array not properly ordered at entry %" PRIu64, f->path, i); | |
fb099c8d ZJS |
2781 | return -EBADMSG; |
2782 | } | |
2783 | ||
2784 | if (offset) | |
2785 | *offset = ofs; | |
2786 | ||
2787 | return 1; | |
de190aef | 2788 | } |
cec736d2 | 2789 | |
de190aef LP |
2790 | int journal_file_next_entry_for_data( |
2791 | JournalFile *f, | |
2792 | Object *o, uint64_t p, | |
2793 | uint64_t data_offset, | |
2794 | direction_t direction, | |
2795 | Object **ret, uint64_t *offset) { | |
2796 | ||
ded5034e | 2797 | uint64_t i, n, ofs; |
de190aef | 2798 | Object *d; |
989793d3 | 2799 | int r; |
cec736d2 LP |
2800 | |
2801 | assert(f); | |
de190aef | 2802 | assert(p > 0 || !o); |
cec736d2 | 2803 | |
de190aef | 2804 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
466ccd92 | 2805 | if (r < 0) |
de190aef | 2806 | return r; |
cec736d2 | 2807 | |
de190aef LP |
2808 | n = le64toh(d->data.n_entries); |
2809 | if (n <= 0) | |
2810 | return n; | |
cec736d2 | 2811 | |
de190aef LP |
2812 | if (!o) |
2813 | i = direction == DIRECTION_DOWN ? 0 : n - 1; | |
2814 | else { | |
2815 | if (o->object.type != OBJECT_ENTRY) | |
2816 | return -EINVAL; | |
cec736d2 | 2817 | |
de190aef LP |
2818 | r = generic_array_bisect_plus_one(f, |
2819 | le64toh(d->data.entry_offset), | |
2820 | le64toh(d->data.entry_array_offset), | |
2821 | le64toh(d->data.n_entries), | |
2822 | p, | |
2823 | test_object_offset, | |
2824 | DIRECTION_DOWN, | |
2825 | NULL, NULL, | |
2826 | &i); | |
2827 | ||
2828 | if (r <= 0) | |
cec736d2 LP |
2829 | return r; |
2830 | ||
aa598ba5 LP |
2831 | r = bump_array_index(&i, direction, n); |
2832 | if (r <= 0) | |
2833 | return r; | |
de190aef | 2834 | } |
cec736d2 | 2835 | |
989793d3 LP |
2836 | for (;;) { |
2837 | r = generic_array_get_plus_one(f, | |
2838 | le64toh(d->data.entry_offset), | |
2839 | le64toh(d->data.entry_array_offset), | |
2840 | i, | |
2841 | ret, &ofs); | |
2842 | if (r > 0) | |
2843 | break; | |
2844 | if (r != -EBADMSG) | |
2845 | return r; | |
2846 | ||
2847 | log_debug_errno(r, "Data entry item %" PRIu64 " is bad, skipping over it.", i); | |
2848 | ||
2849 | r = bump_array_index(&i, direction, n); | |
2850 | if (r <= 0) | |
2851 | return r; | |
2852 | } | |
ded5034e LP |
2853 | |
2854 | /* Ensure our array is properly ordered. */ | |
2855 | if (p > 0 && check_properly_ordered(ofs, p, direction)) { | |
2856 | log_debug("%s data entry array not properly ordered at entry %" PRIu64, f->path, i); | |
2857 | return -EBADMSG; | |
2858 | } | |
2859 | ||
2860 | if (offset) | |
2861 | *offset = ofs; | |
2862 | ||
2863 | return 1; | |
de190aef | 2864 | } |
cec736d2 | 2865 | |
cbdca852 LP |
2866 | int journal_file_move_to_entry_by_offset_for_data( |
2867 | JournalFile *f, | |
2868 | uint64_t data_offset, | |
2869 | uint64_t p, | |
2870 | direction_t direction, | |
2871 | Object **ret, uint64_t *offset) { | |
2872 | ||
2873 | int r; | |
2874 | Object *d; | |
2875 | ||
2876 | assert(f); | |
2877 | ||
2878 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
2879 | if (r < 0) | |
2880 | return r; | |
2881 | ||
2882 | return generic_array_bisect_plus_one(f, | |
2883 | le64toh(d->data.entry_offset), | |
2884 | le64toh(d->data.entry_array_offset), | |
2885 | le64toh(d->data.n_entries), | |
2886 | p, | |
2887 | test_object_offset, | |
2888 | direction, | |
2889 | ret, offset, NULL); | |
2890 | } | |
2891 | ||
2892 | int journal_file_move_to_entry_by_monotonic_for_data( | |
2893 | JournalFile *f, | |
2894 | uint64_t data_offset, | |
2895 | sd_id128_t boot_id, | |
2896 | uint64_t monotonic, | |
2897 | direction_t direction, | |
2898 | Object **ret, uint64_t *offset) { | |
2899 | ||
cbdca852 LP |
2900 | Object *o, *d; |
2901 | int r; | |
2902 | uint64_t b, z; | |
2903 | ||
2904 | assert(f); | |
2905 | ||
2906 | /* First, seek by time */ | |
47838ab3 | 2907 | r = find_data_object_by_boot_id(f, boot_id, &o, &b); |
cbdca852 LP |
2908 | if (r < 0) |
2909 | return r; | |
2910 | if (r == 0) | |
2911 | return -ENOENT; | |
2912 | ||
2913 | r = generic_array_bisect_plus_one(f, | |
2914 | le64toh(o->data.entry_offset), | |
2915 | le64toh(o->data.entry_array_offset), | |
2916 | le64toh(o->data.n_entries), | |
2917 | monotonic, | |
2918 | test_object_monotonic, | |
2919 | direction, | |
2920 | NULL, &z, NULL); | |
2921 | if (r <= 0) | |
2922 | return r; | |
2923 | ||
2924 | /* And now, continue seeking until we find an entry that | |
2925 | * exists in both bisection arrays */ | |
2926 | ||
2927 | for (;;) { | |
2928 | Object *qo; | |
2929 | uint64_t p, q; | |
2930 | ||
2931 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
2932 | if (r < 0) | |
2933 | return r; | |
2934 | ||
2935 | r = generic_array_bisect_plus_one(f, | |
2936 | le64toh(d->data.entry_offset), | |
2937 | le64toh(d->data.entry_array_offset), | |
2938 | le64toh(d->data.n_entries), | |
2939 | z, | |
2940 | test_object_offset, | |
2941 | direction, | |
2942 | NULL, &p, NULL); | |
2943 | if (r <= 0) | |
2944 | return r; | |
2945 | ||
2946 | r = journal_file_move_to_object(f, OBJECT_DATA, b, &o); | |
2947 | if (r < 0) | |
2948 | return r; | |
2949 | ||
2950 | r = generic_array_bisect_plus_one(f, | |
2951 | le64toh(o->data.entry_offset), | |
2952 | le64toh(o->data.entry_array_offset), | |
2953 | le64toh(o->data.n_entries), | |
2954 | p, | |
2955 | test_object_offset, | |
2956 | direction, | |
2957 | &qo, &q, NULL); | |
2958 | ||
2959 | if (r <= 0) | |
2960 | return r; | |
2961 | ||
2962 | if (p == q) { | |
2963 | if (ret) | |
2964 | *ret = qo; | |
2965 | if (offset) | |
2966 | *offset = q; | |
2967 | ||
2968 | return 1; | |
2969 | } | |
2970 | ||
2971 | z = q; | |
2972 | } | |
cbdca852 LP |
2973 | } |
2974 | ||
de190aef LP |
2975 | int journal_file_move_to_entry_by_seqnum_for_data( |
2976 | JournalFile *f, | |
2977 | uint64_t data_offset, | |
2978 | uint64_t seqnum, | |
2979 | direction_t direction, | |
2980 | Object **ret, uint64_t *offset) { | |
cec736d2 | 2981 | |
de190aef LP |
2982 | Object *d; |
2983 | int r; | |
cec736d2 | 2984 | |
91a31dde LP |
2985 | assert(f); |
2986 | ||
de190aef | 2987 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 2988 | if (r < 0) |
de190aef | 2989 | return r; |
cec736d2 | 2990 | |
de190aef LP |
2991 | return generic_array_bisect_plus_one(f, |
2992 | le64toh(d->data.entry_offset), | |
2993 | le64toh(d->data.entry_array_offset), | |
2994 | le64toh(d->data.n_entries), | |
2995 | seqnum, | |
2996 | test_object_seqnum, | |
2997 | direction, | |
2998 | ret, offset, NULL); | |
2999 | } | |
cec736d2 | 3000 | |
de190aef LP |
3001 | int journal_file_move_to_entry_by_realtime_for_data( |
3002 | JournalFile *f, | |
3003 | uint64_t data_offset, | |
3004 | uint64_t realtime, | |
3005 | direction_t direction, | |
3006 | Object **ret, uint64_t *offset) { | |
3007 | ||
3008 | Object *d; | |
3009 | int r; | |
3010 | ||
91a31dde LP |
3011 | assert(f); |
3012 | ||
de190aef | 3013 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 3014 | if (r < 0) |
de190aef LP |
3015 | return r; |
3016 | ||
3017 | return generic_array_bisect_plus_one(f, | |
3018 | le64toh(d->data.entry_offset), | |
3019 | le64toh(d->data.entry_array_offset), | |
3020 | le64toh(d->data.n_entries), | |
3021 | realtime, | |
3022 | test_object_realtime, | |
3023 | direction, | |
3024 | ret, offset, NULL); | |
cec736d2 LP |
3025 | } |
3026 | ||
0284adc6 | 3027 | void journal_file_dump(JournalFile *f) { |
7560fffc | 3028 | Object *o; |
7560fffc | 3029 | int r; |
0284adc6 | 3030 | uint64_t p; |
7560fffc LP |
3031 | |
3032 | assert(f); | |
c88cc6af | 3033 | assert(f->header); |
7560fffc | 3034 | |
0284adc6 | 3035 | journal_file_print_header(f); |
7560fffc | 3036 | |
0284adc6 LP |
3037 | p = le64toh(f->header->header_size); |
3038 | while (p != 0) { | |
d05089d8 | 3039 | r = journal_file_move_to_object(f, OBJECT_UNUSED, p, &o); |
0284adc6 LP |
3040 | if (r < 0) |
3041 | goto fail; | |
7560fffc | 3042 | |
0284adc6 | 3043 | switch (o->object.type) { |
d98cc1f2 | 3044 | |
0284adc6 LP |
3045 | case OBJECT_UNUSED: |
3046 | printf("Type: OBJECT_UNUSED\n"); | |
3047 | break; | |
d98cc1f2 | 3048 | |
0284adc6 LP |
3049 | case OBJECT_DATA: |
3050 | printf("Type: OBJECT_DATA\n"); | |
3051 | break; | |
7560fffc | 3052 | |
3c1668da LP |
3053 | case OBJECT_FIELD: |
3054 | printf("Type: OBJECT_FIELD\n"); | |
3055 | break; | |
3056 | ||
0284adc6 | 3057 | case OBJECT_ENTRY: |
507f22bd ZJS |
3058 | printf("Type: OBJECT_ENTRY seqnum=%"PRIu64" monotonic=%"PRIu64" realtime=%"PRIu64"\n", |
3059 | le64toh(o->entry.seqnum), | |
3060 | le64toh(o->entry.monotonic), | |
3061 | le64toh(o->entry.realtime)); | |
0284adc6 | 3062 | break; |
7560fffc | 3063 | |
0284adc6 LP |
3064 | case OBJECT_FIELD_HASH_TABLE: |
3065 | printf("Type: OBJECT_FIELD_HASH_TABLE\n"); | |
3066 | break; | |
7560fffc | 3067 | |
0284adc6 LP |
3068 | case OBJECT_DATA_HASH_TABLE: |
3069 | printf("Type: OBJECT_DATA_HASH_TABLE\n"); | |
3070 | break; | |
7560fffc | 3071 | |
0284adc6 LP |
3072 | case OBJECT_ENTRY_ARRAY: |
3073 | printf("Type: OBJECT_ENTRY_ARRAY\n"); | |
3074 | break; | |
7560fffc | 3075 | |
0284adc6 | 3076 | case OBJECT_TAG: |
507f22bd ZJS |
3077 | printf("Type: OBJECT_TAG seqnum=%"PRIu64" epoch=%"PRIu64"\n", |
3078 | le64toh(o->tag.seqnum), | |
3079 | le64toh(o->tag.epoch)); | |
0284adc6 | 3080 | break; |
3c1668da LP |
3081 | |
3082 | default: | |
8facc349 | 3083 | printf("Type: unknown (%i)\n", o->object.type); |
3c1668da | 3084 | break; |
0284adc6 | 3085 | } |
7560fffc | 3086 | |
d89c8fdf ZJS |
3087 | if (o->object.flags & OBJECT_COMPRESSION_MASK) |
3088 | printf("Flags: %s\n", | |
3089 | object_compressed_to_string(o->object.flags & OBJECT_COMPRESSION_MASK)); | |
7560fffc | 3090 | |
0284adc6 LP |
3091 | if (p == le64toh(f->header->tail_object_offset)) |
3092 | p = 0; | |
3093 | else | |
3094 | p = p + ALIGN64(le64toh(o->object.size)); | |
3095 | } | |
7560fffc | 3096 | |
0284adc6 LP |
3097 | return; |
3098 | fail: | |
3099 | log_error("File corrupt"); | |
7560fffc LP |
3100 | } |
3101 | ||
718fe4b1 ZJS |
3102 | static const char* format_timestamp_safe(char *buf, size_t l, usec_t t) { |
3103 | const char *x; | |
3104 | ||
3105 | x = format_timestamp(buf, l, t); | |
3106 | if (x) | |
3107 | return x; | |
3108 | return " --- "; | |
3109 | } | |
3110 | ||
0284adc6 | 3111 | void journal_file_print_header(JournalFile *f) { |
2765b7bb | 3112 | char a[33], b[33], c[33], d[33]; |
ed375beb | 3113 | char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX], z[FORMAT_TIMESTAMP_MAX]; |
a1a03e30 LP |
3114 | struct stat st; |
3115 | char bytes[FORMAT_BYTES_MAX]; | |
7560fffc LP |
3116 | |
3117 | assert(f); | |
c88cc6af | 3118 | assert(f->header); |
7560fffc | 3119 | |
0284adc6 LP |
3120 | printf("File Path: %s\n" |
3121 | "File ID: %s\n" | |
3122 | "Machine ID: %s\n" | |
3123 | "Boot ID: %s\n" | |
3124 | "Sequential Number ID: %s\n" | |
3125 | "State: %s\n" | |
3126 | "Compatible Flags:%s%s\n" | |
d89c8fdf | 3127 | "Incompatible Flags:%s%s%s\n" |
507f22bd ZJS |
3128 | "Header size: %"PRIu64"\n" |
3129 | "Arena size: %"PRIu64"\n" | |
3130 | "Data Hash Table Size: %"PRIu64"\n" | |
3131 | "Field Hash Table Size: %"PRIu64"\n" | |
0284adc6 | 3132 | "Rotate Suggested: %s\n" |
0808b92f LP |
3133 | "Head Sequential Number: %"PRIu64" (%"PRIx64")\n" |
3134 | "Tail Sequential Number: %"PRIu64" (%"PRIx64")\n" | |
3135 | "Head Realtime Timestamp: %s (%"PRIx64")\n" | |
3136 | "Tail Realtime Timestamp: %s (%"PRIx64")\n" | |
3137 | "Tail Monotonic Timestamp: %s (%"PRIx64")\n" | |
507f22bd ZJS |
3138 | "Objects: %"PRIu64"\n" |
3139 | "Entry Objects: %"PRIu64"\n", | |
0284adc6 LP |
3140 | f->path, |
3141 | sd_id128_to_string(f->header->file_id, a), | |
3142 | sd_id128_to_string(f->header->machine_id, b), | |
3143 | sd_id128_to_string(f->header->boot_id, c), | |
2765b7bb | 3144 | sd_id128_to_string(f->header->seqnum_id, d), |
3223f44f LP |
3145 | f->header->state == STATE_OFFLINE ? "OFFLINE" : |
3146 | f->header->state == STATE_ONLINE ? "ONLINE" : | |
3147 | f->header->state == STATE_ARCHIVED ? "ARCHIVED" : "UNKNOWN", | |
8088cbd3 | 3148 | JOURNAL_HEADER_SEALED(f->header) ? " SEALED" : "", |
d89c8fdf ZJS |
3149 | (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_ANY) ? " ???" : "", |
3150 | JOURNAL_HEADER_COMPRESSED_XZ(f->header) ? " COMPRESSED-XZ" : "", | |
3151 | JOURNAL_HEADER_COMPRESSED_LZ4(f->header) ? " COMPRESSED-LZ4" : "", | |
3152 | (le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_ANY) ? " ???" : "", | |
507f22bd ZJS |
3153 | le64toh(f->header->header_size), |
3154 | le64toh(f->header->arena_size), | |
3155 | le64toh(f->header->data_hash_table_size) / sizeof(HashItem), | |
3156 | le64toh(f->header->field_hash_table_size) / sizeof(HashItem), | |
fb0951b0 | 3157 | yes_no(journal_file_rotate_suggested(f, 0)), |
0808b92f LP |
3158 | le64toh(f->header->head_entry_seqnum), le64toh(f->header->head_entry_seqnum), |
3159 | le64toh(f->header->tail_entry_seqnum), le64toh(f->header->tail_entry_seqnum), | |
3160 | format_timestamp_safe(x, sizeof(x), le64toh(f->header->head_entry_realtime)), le64toh(f->header->head_entry_realtime), | |
3161 | format_timestamp_safe(y, sizeof(y), le64toh(f->header->tail_entry_realtime)), le64toh(f->header->tail_entry_realtime), | |
3162 | format_timespan(z, sizeof(z), le64toh(f->header->tail_entry_monotonic), USEC_PER_MSEC), le64toh(f->header->tail_entry_monotonic), | |
507f22bd ZJS |
3163 | le64toh(f->header->n_objects), |
3164 | le64toh(f->header->n_entries)); | |
7560fffc | 3165 | |
0284adc6 | 3166 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
507f22bd | 3167 | printf("Data Objects: %"PRIu64"\n" |
0284adc6 | 3168 | "Data Hash Table Fill: %.1f%%\n", |
507f22bd | 3169 | le64toh(f->header->n_data), |
0284adc6 | 3170 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)))); |
7560fffc | 3171 | |
0284adc6 | 3172 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) |
507f22bd | 3173 | printf("Field Objects: %"PRIu64"\n" |
0284adc6 | 3174 | "Field Hash Table Fill: %.1f%%\n", |
507f22bd | 3175 | le64toh(f->header->n_fields), |
0284adc6 | 3176 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)))); |
3223f44f LP |
3177 | |
3178 | if (JOURNAL_HEADER_CONTAINS(f->header, n_tags)) | |
507f22bd ZJS |
3179 | printf("Tag Objects: %"PRIu64"\n", |
3180 | le64toh(f->header->n_tags)); | |
3223f44f | 3181 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
507f22bd ZJS |
3182 | printf("Entry Array Objects: %"PRIu64"\n", |
3183 | le64toh(f->header->n_entry_arrays)); | |
a1a03e30 LP |
3184 | |
3185 | if (fstat(f->fd, &st) >= 0) | |
59f448cf | 3186 | printf("Disk usage: %s\n", format_bytes(bytes, sizeof(bytes), (uint64_t) st.st_blocks * 512ULL)); |
7560fffc LP |
3187 | } |
3188 | ||
fc68c929 LP |
3189 | static int journal_file_warn_btrfs(JournalFile *f) { |
3190 | unsigned attrs; | |
3191 | int r; | |
3192 | ||
3193 | assert(f); | |
3194 | ||
3195 | /* Before we write anything, check if the COW logic is turned | |
3196 | * off on btrfs. Given our write pattern that is quite | |
3197 | * unfriendly to COW file systems this should greatly improve | |
3198 | * performance on COW file systems, such as btrfs, at the | |
3199 | * expense of data integrity features (which shouldn't be too | |
3200 | * bad, given that we do our own checksumming). */ | |
3201 | ||
3202 | r = btrfs_is_filesystem(f->fd); | |
3203 | if (r < 0) | |
3204 | return log_warning_errno(r, "Failed to determine if journal is on btrfs: %m"); | |
3205 | if (!r) | |
3206 | return 0; | |
3207 | ||
3208 | r = read_attr_fd(f->fd, &attrs); | |
3209 | if (r < 0) | |
3210 | return log_warning_errno(r, "Failed to read file attributes: %m"); | |
3211 | ||
3212 | if (attrs & FS_NOCOW_FL) { | |
3213 | log_debug("Detected btrfs file system with copy-on-write disabled, all is good."); | |
3214 | return 0; | |
3215 | } | |
3216 | ||
3217 | log_notice("Creating journal file %s on a btrfs file system, and copy-on-write is enabled. " | |
3218 | "This is likely to slow down journal access substantially, please consider turning " | |
3219 | "off the copy-on-write file attribute on the journal directory, using chattr +C.", f->path); | |
3220 | ||
3221 | return 1; | |
3222 | } | |
3223 | ||
0284adc6 | 3224 | int journal_file_open( |
5d1ce257 | 3225 | int fd, |
0284adc6 LP |
3226 | const char *fname, |
3227 | int flags, | |
3228 | mode_t mode, | |
3229 | bool compress, | |
baed47c3 | 3230 | bool seal, |
0284adc6 LP |
3231 | JournalMetrics *metrics, |
3232 | MMapCache *mmap_cache, | |
b58c888f | 3233 | Set *deferred_closes, |
0284adc6 LP |
3234 | JournalFile *template, |
3235 | JournalFile **ret) { | |
7560fffc | 3236 | |
fa6ac760 | 3237 | bool newly_created = false; |
0284adc6 | 3238 | JournalFile *f; |
fa6ac760 | 3239 | void *h; |
0284adc6 | 3240 | int r; |
7560fffc | 3241 | |
0559d3a5 | 3242 | assert(ret); |
5d1ce257 | 3243 | assert(fd >= 0 || fname); |
7560fffc | 3244 | |
0284adc6 LP |
3245 | if ((flags & O_ACCMODE) != O_RDONLY && |
3246 | (flags & O_ACCMODE) != O_RDWR) | |
3247 | return -EINVAL; | |
7560fffc | 3248 | |
5d1ce257 LP |
3249 | if (fname) { |
3250 | if (!endswith(fname, ".journal") && | |
3251 | !endswith(fname, ".journal~")) | |
3252 | return -EINVAL; | |
3253 | } | |
7560fffc | 3254 | |
0284adc6 LP |
3255 | f = new0(JournalFile, 1); |
3256 | if (!f) | |
3257 | return -ENOMEM; | |
7560fffc | 3258 | |
5d1ce257 | 3259 | f->fd = fd; |
0284adc6 | 3260 | f->mode = mode; |
7560fffc | 3261 | |
0284adc6 LP |
3262 | f->flags = flags; |
3263 | f->prot = prot_from_flags(flags); | |
3264 | f->writable = (flags & O_ACCMODE) != O_RDONLY; | |
92261977 | 3265 | #if defined(HAVE_LZ4) |
d89c8fdf ZJS |
3266 | f->compress_lz4 = compress; |
3267 | #elif defined(HAVE_XZ) | |
3268 | f->compress_xz = compress; | |
48b61739 | 3269 | #endif |
49a32d43 | 3270 | #ifdef HAVE_GCRYPT |
baed47c3 | 3271 | f->seal = seal; |
49a32d43 | 3272 | #endif |
7560fffc | 3273 | |
0284adc6 LP |
3274 | if (mmap_cache) |
3275 | f->mmap = mmap_cache_ref(mmap_cache); | |
3276 | else { | |
84168d80 | 3277 | f->mmap = mmap_cache_new(); |
0284adc6 LP |
3278 | if (!f->mmap) { |
3279 | r = -ENOMEM; | |
3280 | goto fail; | |
3281 | } | |
3282 | } | |
7560fffc | 3283 | |
7645c77b | 3284 | if (fname) { |
5d1ce257 | 3285 | f->path = strdup(fname); |
7645c77b ZJS |
3286 | if (!f->path) { |
3287 | r = -ENOMEM; | |
3288 | goto fail; | |
3289 | } | |
3290 | } else { | |
3291 | /* If we don't know the path, fill in something explanatory and vaguely useful */ | |
3292 | if (asprintf(&f->path, "/proc/self/%i", fd) < 0) { | |
3293 | r = -ENOMEM; | |
3294 | goto fail; | |
3295 | } | |
0284adc6 | 3296 | } |
7560fffc | 3297 | |
4743015d | 3298 | f->chain_cache = ordered_hashmap_new(&uint64_hash_ops); |
a4bcff5b LP |
3299 | if (!f->chain_cache) { |
3300 | r = -ENOMEM; | |
3301 | goto fail; | |
3302 | } | |
3303 | ||
0284adc6 | 3304 | if (f->fd < 0) { |
5d1ce257 LP |
3305 | f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode); |
3306 | if (f->fd < 0) { | |
3307 | r = -errno; | |
3308 | goto fail; | |
3309 | } | |
3310 | ||
3311 | /* fds we opened here by us should also be closed by us. */ | |
3312 | f->close_fd = true; | |
7560fffc | 3313 | } |
7560fffc | 3314 | |
be7cdd8e VC |
3315 | f->cache_fd = mmap_cache_add_fd(f->mmap, f->fd); |
3316 | if (!f->cache_fd) { | |
3317 | r = -ENOMEM; | |
3318 | goto fail; | |
3319 | } | |
3320 | ||
2678031a LP |
3321 | r = journal_file_fstat(f); |
3322 | if (r < 0) | |
0284adc6 | 3323 | goto fail; |
7560fffc | 3324 | |
0284adc6 | 3325 | if (f->last_stat.st_size == 0 && f->writable) { |
11689d2a | 3326 | |
fc68c929 | 3327 | (void) journal_file_warn_btrfs(f); |
11689d2a | 3328 | |
fb0951b0 LP |
3329 | /* Let's attach the creation time to the journal file, |
3330 | * so that the vacuuming code knows the age of this | |
3331 | * file even if the file might end up corrupted one | |
3332 | * day... Ideally we'd just use the creation time many | |
3333 | * file systems maintain for each file, but there is | |
3334 | * currently no usable API to query this, hence let's | |
3335 | * emulate this via extended attributes. If extended | |
3336 | * attributes are not supported we'll just skip this, | |
7517e174 | 3337 | * and rely solely on mtime/atime/ctime of the file. */ |
fb0951b0 | 3338 | |
d61b600d | 3339 | fd_setcrtime(f->fd, 0); |
7560fffc | 3340 | |
feb12d3e | 3341 | #ifdef HAVE_GCRYPT |
0284adc6 | 3342 | /* Try to load the FSPRG state, and if we can't, then |
baed47c3 | 3343 | * just don't do sealing */ |
49a32d43 LP |
3344 | if (f->seal) { |
3345 | r = journal_file_fss_load(f); | |
3346 | if (r < 0) | |
3347 | f->seal = false; | |
3348 | } | |
feb12d3e | 3349 | #endif |
7560fffc | 3350 | |
0284adc6 LP |
3351 | r = journal_file_init_header(f, template); |
3352 | if (r < 0) | |
3353 | goto fail; | |
7560fffc | 3354 | |
2678031a LP |
3355 | r = journal_file_fstat(f); |
3356 | if (r < 0) | |
0284adc6 | 3357 | goto fail; |
fb0951b0 LP |
3358 | |
3359 | newly_created = true; | |
0284adc6 | 3360 | } |
7560fffc | 3361 | |
0284adc6 | 3362 | if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) { |
cfb571f3 | 3363 | r = -ENODATA; |
0284adc6 LP |
3364 | goto fail; |
3365 | } | |
7560fffc | 3366 | |
b42549ad | 3367 | r = mmap_cache_get(f->mmap, f->cache_fd, f->prot, CONTEXT_HEADER, true, 0, PAGE_ALIGN(sizeof(Header)), &f->last_stat, &h, NULL); |
977eaa1e | 3368 | if (r < 0) |
0284adc6 | 3369 | goto fail; |
7560fffc | 3370 | |
fa6ac760 LP |
3371 | f->header = h; |
3372 | ||
0284adc6 | 3373 | if (!newly_created) { |
b58c888f VC |
3374 | if (deferred_closes) |
3375 | journal_file_close_set(deferred_closes); | |
3376 | ||
0284adc6 LP |
3377 | r = journal_file_verify_header(f); |
3378 | if (r < 0) | |
3379 | goto fail; | |
3380 | } | |
7560fffc | 3381 | |
feb12d3e | 3382 | #ifdef HAVE_GCRYPT |
0284adc6 | 3383 | if (!newly_created && f->writable) { |
baed47c3 | 3384 | r = journal_file_fss_load(f); |
0284adc6 LP |
3385 | if (r < 0) |
3386 | goto fail; | |
3387 | } | |
feb12d3e | 3388 | #endif |
cec736d2 LP |
3389 | |
3390 | if (f->writable) { | |
4a92baf3 LP |
3391 | if (metrics) { |
3392 | journal_default_metrics(metrics, f->fd); | |
3393 | f->metrics = *metrics; | |
3394 | } else if (template) | |
3395 | f->metrics = template->metrics; | |
3396 | ||
cec736d2 LP |
3397 | r = journal_file_refresh_header(f); |
3398 | if (r < 0) | |
3399 | goto fail; | |
3400 | } | |
3401 | ||
feb12d3e | 3402 | #ifdef HAVE_GCRYPT |
baed47c3 | 3403 | r = journal_file_hmac_setup(f); |
14d10188 LP |
3404 | if (r < 0) |
3405 | goto fail; | |
feb12d3e | 3406 | #endif |
14d10188 | 3407 | |
cec736d2 | 3408 | if (newly_created) { |
de190aef | 3409 | r = journal_file_setup_field_hash_table(f); |
cec736d2 LP |
3410 | if (r < 0) |
3411 | goto fail; | |
3412 | ||
de190aef | 3413 | r = journal_file_setup_data_hash_table(f); |
cec736d2 LP |
3414 | if (r < 0) |
3415 | goto fail; | |
7560fffc | 3416 | |
feb12d3e | 3417 | #ifdef HAVE_GCRYPT |
7560fffc LP |
3418 | r = journal_file_append_first_tag(f); |
3419 | if (r < 0) | |
3420 | goto fail; | |
feb12d3e | 3421 | #endif |
cec736d2 LP |
3422 | } |
3423 | ||
be7cdd8e | 3424 | if (mmap_cache_got_sigbus(f->mmap, f->cache_fd)) { |
fa6ac760 LP |
3425 | r = -EIO; |
3426 | goto fail; | |
3427 | } | |
3428 | ||
7a24f3bf | 3429 | if (template && template->post_change_timer) { |
e167d7fd LP |
3430 | r = journal_file_enable_post_change_timer( |
3431 | f, | |
3432 | sd_event_source_get_event(template->post_change_timer), | |
3433 | template->post_change_timer_period); | |
7a24f3bf | 3434 | |
7a24f3bf VC |
3435 | if (r < 0) |
3436 | goto fail; | |
3437 | } | |
3438 | ||
f8e2f4d6 | 3439 | /* The file is opened now successfully, thus we take possession of any passed in fd. */ |
5d1ce257 LP |
3440 | f->close_fd = true; |
3441 | ||
0559d3a5 | 3442 | *ret = f; |
cec736d2 LP |
3443 | return 0; |
3444 | ||
3445 | fail: | |
be7cdd8e | 3446 | if (f->cache_fd && mmap_cache_got_sigbus(f->mmap, f->cache_fd)) |
fa6ac760 LP |
3447 | r = -EIO; |
3448 | ||
69a3a6fd | 3449 | (void) journal_file_close(f); |
cec736d2 LP |
3450 | |
3451 | return r; | |
3452 | } | |
0ac38b70 | 3453 | |
b58c888f | 3454 | int journal_file_rotate(JournalFile **f, bool compress, bool seal, Set *deferred_closes) { |
57535f47 | 3455 | _cleanup_free_ char *p = NULL; |
0ac38b70 LP |
3456 | size_t l; |
3457 | JournalFile *old_file, *new_file = NULL; | |
3458 | int r; | |
3459 | ||
3460 | assert(f); | |
3461 | assert(*f); | |
3462 | ||
3463 | old_file = *f; | |
3464 | ||
3465 | if (!old_file->writable) | |
3466 | return -EINVAL; | |
3467 | ||
5d1ce257 | 3468 | /* Is this a journal file that was passed to us as fd? If so, we synthesized a path name for it, and we refuse |
13e785f7 | 3469 | * rotation, since we don't know the actual path, and couldn't rename the file hence. */ |
5d1ce257 LP |
3470 | if (path_startswith(old_file->path, "/proc/self/fd")) |
3471 | return -EINVAL; | |
3472 | ||
0ac38b70 LP |
3473 | if (!endswith(old_file->path, ".journal")) |
3474 | return -EINVAL; | |
3475 | ||
3476 | l = strlen(old_file->path); | |
57535f47 ZJS |
3477 | r = asprintf(&p, "%.*s@" SD_ID128_FORMAT_STR "-%016"PRIx64"-%016"PRIx64".journal", |
3478 | (int) l - 8, old_file->path, | |
3479 | SD_ID128_FORMAT_VAL(old_file->header->seqnum_id), | |
3480 | le64toh((*f)->header->head_entry_seqnum), | |
3481 | le64toh((*f)->header->head_entry_realtime)); | |
3482 | if (r < 0) | |
0ac38b70 LP |
3483 | return -ENOMEM; |
3484 | ||
2678031a LP |
3485 | /* Try to rename the file to the archived version. If the file |
3486 | * already was deleted, we'll get ENOENT, let's ignore that | |
3487 | * case. */ | |
0ac38b70 | 3488 | r = rename(old_file->path, p); |
2678031a | 3489 | if (r < 0 && errno != ENOENT) |
0ac38b70 LP |
3490 | return -errno; |
3491 | ||
1fcefd88 LP |
3492 | /* Sync the rename to disk */ |
3493 | (void) fsync_directory_of_file(old_file->fd); | |
3494 | ||
8eb85171 VC |
3495 | /* Set as archive so offlining commits w/state=STATE_ARCHIVED. |
3496 | * Previously we would set old_file->header->state to STATE_ARCHIVED directly here, | |
3497 | * but journal_file_set_offline() short-circuits when state != STATE_ONLINE, which | |
3498 | * would result in the rotated journal never getting fsync() called before closing. | |
3499 | * Now we simply queue the archive state by setting an archive bit, leaving the state | |
3500 | * as STATE_ONLINE so proper offlining occurs. */ | |
3501 | old_file->archive = true; | |
0ac38b70 | 3502 | |
f27a3864 LP |
3503 | /* Currently, btrfs is not very good with out write patterns |
3504 | * and fragments heavily. Let's defrag our journal files when | |
3505 | * we archive them */ | |
3506 | old_file->defrag_on_close = true; | |
3507 | ||
5d1ce257 | 3508 | r = journal_file_open(-1, old_file->path, old_file->flags, old_file->mode, compress, seal, NULL, old_file->mmap, deferred_closes, old_file, &new_file); |
b58c888f VC |
3509 | |
3510 | if (deferred_closes && | |
3511 | set_put(deferred_closes, old_file) >= 0) | |
3512 | (void) journal_file_set_offline(old_file, false); | |
3513 | else | |
3514 | (void) journal_file_close(old_file); | |
0ac38b70 LP |
3515 | |
3516 | *f = new_file; | |
3517 | return r; | |
3518 | } | |
3519 | ||
9447a7f1 LP |
3520 | int journal_file_open_reliably( |
3521 | const char *fname, | |
3522 | int flags, | |
3523 | mode_t mode, | |
7560fffc | 3524 | bool compress, |
baed47c3 | 3525 | bool seal, |
4a92baf3 | 3526 | JournalMetrics *metrics, |
27370278 | 3527 | MMapCache *mmap_cache, |
b58c888f | 3528 | Set *deferred_closes, |
9447a7f1 LP |
3529 | JournalFile *template, |
3530 | JournalFile **ret) { | |
3531 | ||
3532 | int r; | |
3533 | size_t l; | |
ed375beb | 3534 | _cleanup_free_ char *p = NULL; |
9447a7f1 | 3535 | |
5d1ce257 | 3536 | r = journal_file_open(-1, fname, flags, mode, compress, seal, metrics, mmap_cache, deferred_closes, template, ret); |
288359db | 3537 | if (!IN_SET(r, |
b288cdeb ZJS |
3538 | -EBADMSG, /* Corrupted */ |
3539 | -ENODATA, /* Truncated */ | |
3540 | -EHOSTDOWN, /* Other machine */ | |
3541 | -EPROTONOSUPPORT, /* Incompatible feature */ | |
3542 | -EBUSY, /* Unclean shutdown */ | |
3543 | -ESHUTDOWN, /* Already archived */ | |
288359db | 3544 | -EIO, /* IO error, including SIGBUS on mmap */ |
ae739cc1 LP |
3545 | -EIDRM, /* File has been deleted */ |
3546 | -ETXTBSY)) /* File is from the future */ | |
9447a7f1 LP |
3547 | return r; |
3548 | ||
3549 | if ((flags & O_ACCMODE) == O_RDONLY) | |
3550 | return r; | |
3551 | ||
3552 | if (!(flags & O_CREAT)) | |
3553 | return r; | |
3554 | ||
7560fffc LP |
3555 | if (!endswith(fname, ".journal")) |
3556 | return r; | |
3557 | ||
5c70eab4 LP |
3558 | /* The file is corrupted. Rotate it away and try it again (but only once) */ |
3559 | ||
9447a7f1 | 3560 | l = strlen(fname); |
d587eca5 | 3561 | if (asprintf(&p, "%.*s@%016"PRIx64 "-%016"PRIx64 ".journal~", |
57535f47 | 3562 | (int) l - 8, fname, |
d587eca5 | 3563 | now(CLOCK_REALTIME), |
9bf3b535 | 3564 | random_u64()) < 0) |
9447a7f1 LP |
3565 | return -ENOMEM; |
3566 | ||
65089b82 | 3567 | if (rename(fname, p) < 0) |
9447a7f1 LP |
3568 | return -errno; |
3569 | ||
f27a3864 LP |
3570 | /* btrfs doesn't cope well with our write pattern and |
3571 | * fragments heavily. Let's defrag all files we rotate */ | |
11689d2a | 3572 | |
a67d68b8 | 3573 | (void) chattr_path(p, 0, FS_NOCOW_FL); |
f27a3864 LP |
3574 | (void) btrfs_defrag(p); |
3575 | ||
65089b82 | 3576 | log_warning_errno(r, "File %s corrupted or uncleanly shut down, renaming and replacing.", fname); |
9447a7f1 | 3577 | |
5d1ce257 | 3578 | return journal_file_open(-1, fname, flags, mode, compress, seal, metrics, mmap_cache, deferred_closes, template, ret); |
9447a7f1 LP |
3579 | } |
3580 | ||
cf244689 LP |
3581 | int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) { |
3582 | uint64_t i, n; | |
3583 | uint64_t q, xor_hash = 0; | |
3584 | int r; | |
3585 | EntryItem *items; | |
3586 | dual_timestamp ts; | |
3587 | ||
3588 | assert(from); | |
3589 | assert(to); | |
3590 | assert(o); | |
3591 | assert(p); | |
3592 | ||
3593 | if (!to->writable) | |
3594 | return -EPERM; | |
3595 | ||
3596 | ts.monotonic = le64toh(o->entry.monotonic); | |
3597 | ts.realtime = le64toh(o->entry.realtime); | |
3598 | ||
cf244689 | 3599 | n = journal_file_entry_n_items(o); |
4faa7004 TA |
3600 | /* alloca() can't take 0, hence let's allocate at least one */ |
3601 | items = alloca(sizeof(EntryItem) * MAX(1u, n)); | |
cf244689 LP |
3602 | |
3603 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
3604 | uint64_t l, h; |
3605 | le64_t le_hash; | |
cf244689 LP |
3606 | size_t t; |
3607 | void *data; | |
3608 | Object *u; | |
3609 | ||
3610 | q = le64toh(o->entry.items[i].object_offset); | |
3611 | le_hash = o->entry.items[i].hash; | |
3612 | ||
3613 | r = journal_file_move_to_object(from, OBJECT_DATA, q, &o); | |
3614 | if (r < 0) | |
3615 | return r; | |
3616 | ||
3617 | if (le_hash != o->data.hash) | |
3618 | return -EBADMSG; | |
3619 | ||
3620 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
3621 | t = (size_t) l; | |
3622 | ||
3623 | /* We hit the limit on 32bit machines */ | |
3624 | if ((uint64_t) t != l) | |
3625 | return -E2BIG; | |
3626 | ||
d89c8fdf | 3627 | if (o->object.flags & OBJECT_COMPRESSION_MASK) { |
3b1a55e1 | 3628 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
a7f7d1bd | 3629 | size_t rsize = 0; |
cf244689 | 3630 | |
d89c8fdf ZJS |
3631 | r = decompress_blob(o->object.flags & OBJECT_COMPRESSION_MASK, |
3632 | o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize, 0); | |
3633 | if (r < 0) | |
3634 | return r; | |
cf244689 LP |
3635 | |
3636 | data = from->compress_buffer; | |
3637 | l = rsize; | |
3b1a55e1 ZJS |
3638 | #else |
3639 | return -EPROTONOSUPPORT; | |
3640 | #endif | |
cf244689 LP |
3641 | } else |
3642 | data = o->data.payload; | |
3643 | ||
3644 | r = journal_file_append_data(to, data, l, &u, &h); | |
3645 | if (r < 0) | |
3646 | return r; | |
3647 | ||
3648 | xor_hash ^= le64toh(u->data.hash); | |
3649 | items[i].object_offset = htole64(h); | |
3650 | items[i].hash = u->data.hash; | |
3651 | ||
3652 | r = journal_file_move_to_object(from, OBJECT_ENTRY, p, &o); | |
3653 | if (r < 0) | |
3654 | return r; | |
3655 | } | |
3656 | ||
fa6ac760 LP |
3657 | r = journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset); |
3658 | ||
be7cdd8e | 3659 | if (mmap_cache_got_sigbus(to->mmap, to->cache_fd)) |
fa6ac760 LP |
3660 | return -EIO; |
3661 | ||
3662 | return r; | |
cf244689 | 3663 | } |
babfc091 | 3664 | |
8580d1f7 LP |
3665 | void journal_reset_metrics(JournalMetrics *m) { |
3666 | assert(m); | |
3667 | ||
3668 | /* Set everything to "pick automatic values". */ | |
3669 | ||
3670 | *m = (JournalMetrics) { | |
3671 | .min_use = (uint64_t) -1, | |
3672 | .max_use = (uint64_t) -1, | |
3673 | .min_size = (uint64_t) -1, | |
3674 | .max_size = (uint64_t) -1, | |
3675 | .keep_free = (uint64_t) -1, | |
3676 | .n_max_files = (uint64_t) -1, | |
3677 | }; | |
3678 | } | |
3679 | ||
babfc091 | 3680 | void journal_default_metrics(JournalMetrics *m, int fd) { |
8580d1f7 | 3681 | char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX], e[FORMAT_BYTES_MAX]; |
babfc091 | 3682 | struct statvfs ss; |
8580d1f7 | 3683 | uint64_t fs_size; |
babfc091 LP |
3684 | |
3685 | assert(m); | |
3686 | assert(fd >= 0); | |
3687 | ||
3688 | if (fstatvfs(fd, &ss) >= 0) | |
3689 | fs_size = ss.f_frsize * ss.f_blocks; | |
8580d1f7 LP |
3690 | else { |
3691 | log_debug_errno(errno, "Failed to detremine disk size: %m"); | |
3692 | fs_size = 0; | |
3693 | } | |
babfc091 LP |
3694 | |
3695 | if (m->max_use == (uint64_t) -1) { | |
3696 | ||
3697 | if (fs_size > 0) { | |
3698 | m->max_use = PAGE_ALIGN(fs_size / 10); /* 10% of file system size */ | |
3699 | ||
3700 | if (m->max_use > DEFAULT_MAX_USE_UPPER) | |
3701 | m->max_use = DEFAULT_MAX_USE_UPPER; | |
3702 | ||
3703 | if (m->max_use < DEFAULT_MAX_USE_LOWER) | |
3704 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
3705 | } else | |
3706 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
3707 | } else { | |
3708 | m->max_use = PAGE_ALIGN(m->max_use); | |
3709 | ||
8580d1f7 | 3710 | if (m->max_use != 0 && m->max_use < JOURNAL_FILE_SIZE_MIN*2) |
babfc091 LP |
3711 | m->max_use = JOURNAL_FILE_SIZE_MIN*2; |
3712 | } | |
3713 | ||
8580d1f7 LP |
3714 | if (m->min_use == (uint64_t) -1) |
3715 | m->min_use = DEFAULT_MIN_USE; | |
3716 | ||
3717 | if (m->min_use > m->max_use) | |
3718 | m->min_use = m->max_use; | |
3719 | ||
babfc091 LP |
3720 | if (m->max_size == (uint64_t) -1) { |
3721 | m->max_size = PAGE_ALIGN(m->max_use / 8); /* 8 chunks */ | |
3722 | ||
3723 | if (m->max_size > DEFAULT_MAX_SIZE_UPPER) | |
3724 | m->max_size = DEFAULT_MAX_SIZE_UPPER; | |
3725 | } else | |
3726 | m->max_size = PAGE_ALIGN(m->max_size); | |
3727 | ||
8580d1f7 LP |
3728 | if (m->max_size != 0) { |
3729 | if (m->max_size < JOURNAL_FILE_SIZE_MIN) | |
3730 | m->max_size = JOURNAL_FILE_SIZE_MIN; | |
babfc091 | 3731 | |
8580d1f7 LP |
3732 | if (m->max_use != 0 && m->max_size*2 > m->max_use) |
3733 | m->max_use = m->max_size*2; | |
3734 | } | |
babfc091 LP |
3735 | |
3736 | if (m->min_size == (uint64_t) -1) | |
3737 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
3738 | else { | |
3739 | m->min_size = PAGE_ALIGN(m->min_size); | |
3740 | ||
3741 | if (m->min_size < JOURNAL_FILE_SIZE_MIN) | |
3742 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
3743 | ||
8580d1f7 | 3744 | if (m->max_size != 0 && m->min_size > m->max_size) |
babfc091 LP |
3745 | m->max_size = m->min_size; |
3746 | } | |
3747 | ||
3748 | if (m->keep_free == (uint64_t) -1) { | |
3749 | ||
3750 | if (fs_size > 0) { | |
8621b110 | 3751 | m->keep_free = PAGE_ALIGN(fs_size * 3 / 20); /* 15% of file system size */ |
babfc091 LP |
3752 | |
3753 | if (m->keep_free > DEFAULT_KEEP_FREE_UPPER) | |
3754 | m->keep_free = DEFAULT_KEEP_FREE_UPPER; | |
3755 | ||
3756 | } else | |
3757 | m->keep_free = DEFAULT_KEEP_FREE; | |
3758 | } | |
3759 | ||
8580d1f7 LP |
3760 | if (m->n_max_files == (uint64_t) -1) |
3761 | m->n_max_files = DEFAULT_N_MAX_FILES; | |
3762 | ||
3763 | log_debug("Fixed min_use=%s max_use=%s max_size=%s min_size=%s keep_free=%s n_max_files=%" PRIu64, | |
3764 | format_bytes(a, sizeof(a), m->min_use), | |
3765 | format_bytes(b, sizeof(b), m->max_use), | |
3766 | format_bytes(c, sizeof(c), m->max_size), | |
3767 | format_bytes(d, sizeof(d), m->min_size), | |
3768 | format_bytes(e, sizeof(e), m->keep_free), | |
3769 | m->n_max_files); | |
babfc091 | 3770 | } |
08984293 LP |
3771 | |
3772 | int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) { | |
08984293 | 3773 | assert(f); |
c88cc6af | 3774 | assert(f->header); |
08984293 LP |
3775 | assert(from || to); |
3776 | ||
3777 | if (from) { | |
162566a4 LP |
3778 | if (f->header->head_entry_realtime == 0) |
3779 | return -ENOENT; | |
08984293 | 3780 | |
162566a4 | 3781 | *from = le64toh(f->header->head_entry_realtime); |
08984293 LP |
3782 | } |
3783 | ||
3784 | if (to) { | |
162566a4 LP |
3785 | if (f->header->tail_entry_realtime == 0) |
3786 | return -ENOENT; | |
08984293 | 3787 | |
162566a4 | 3788 | *to = le64toh(f->header->tail_entry_realtime); |
08984293 LP |
3789 | } |
3790 | ||
3791 | return 1; | |
3792 | } | |
3793 | ||
3794 | int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot_id, usec_t *from, usec_t *to) { | |
08984293 LP |
3795 | Object *o; |
3796 | uint64_t p; | |
3797 | int r; | |
3798 | ||
3799 | assert(f); | |
3800 | assert(from || to); | |
3801 | ||
47838ab3 | 3802 | r = find_data_object_by_boot_id(f, boot_id, &o, &p); |
08984293 LP |
3803 | if (r <= 0) |
3804 | return r; | |
3805 | ||
3806 | if (le64toh(o->data.n_entries) <= 0) | |
3807 | return 0; | |
3808 | ||
3809 | if (from) { | |
3810 | r = journal_file_move_to_object(f, OBJECT_ENTRY, le64toh(o->data.entry_offset), &o); | |
3811 | if (r < 0) | |
3812 | return r; | |
3813 | ||
3814 | *from = le64toh(o->entry.monotonic); | |
3815 | } | |
3816 | ||
3817 | if (to) { | |
3818 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3819 | if (r < 0) | |
3820 | return r; | |
3821 | ||
3822 | r = generic_array_get_plus_one(f, | |
3823 | le64toh(o->data.entry_offset), | |
3824 | le64toh(o->data.entry_array_offset), | |
3825 | le64toh(o->data.n_entries)-1, | |
3826 | &o, NULL); | |
3827 | if (r <= 0) | |
3828 | return r; | |
3829 | ||
3830 | *to = le64toh(o->entry.monotonic); | |
3831 | } | |
3832 | ||
3833 | return 1; | |
3834 | } | |
dca6219e | 3835 | |
fb0951b0 | 3836 | bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec) { |
dca6219e | 3837 | assert(f); |
c88cc6af | 3838 | assert(f->header); |
dca6219e LP |
3839 | |
3840 | /* If we gained new header fields we gained new features, | |
3841 | * hence suggest a rotation */ | |
361f9cbc LP |
3842 | if (le64toh(f->header->header_size) < sizeof(Header)) { |
3843 | log_debug("%s uses an outdated header, suggesting rotation.", f->path); | |
dca6219e | 3844 | return true; |
361f9cbc | 3845 | } |
dca6219e LP |
3846 | |
3847 | /* Let's check if the hash tables grew over a certain fill | |
3848 | * level (75%, borrowing this value from Java's hash table | |
3849 | * implementation), and if so suggest a rotation. To calculate | |
3850 | * the fill level we need the n_data field, which only exists | |
3851 | * in newer versions. */ | |
3852 | ||
3853 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) | |
361f9cbc | 3854 | if (le64toh(f->header->n_data) * 4ULL > (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
507f22bd | 3855 | log_debug("Data hash table of %s has a fill level at %.1f (%"PRIu64" of %"PRIu64" items, %llu file size, %"PRIu64" bytes per hash table item), suggesting rotation.", |
361f9cbc LP |
3856 | f->path, |
3857 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))), | |
507f22bd ZJS |
3858 | le64toh(f->header->n_data), |
3859 | le64toh(f->header->data_hash_table_size) / sizeof(HashItem), | |
3860 | (unsigned long long) f->last_stat.st_size, | |
3861 | f->last_stat.st_size / le64toh(f->header->n_data)); | |
dca6219e | 3862 | return true; |
361f9cbc | 3863 | } |
dca6219e LP |
3864 | |
3865 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
361f9cbc | 3866 | if (le64toh(f->header->n_fields) * 4ULL > (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
507f22bd | 3867 | log_debug("Field hash table of %s has a fill level at %.1f (%"PRIu64" of %"PRIu64" items), suggesting rotation.", |
361f9cbc LP |
3868 | f->path, |
3869 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))), | |
507f22bd ZJS |
3870 | le64toh(f->header->n_fields), |
3871 | le64toh(f->header->field_hash_table_size) / sizeof(HashItem)); | |
dca6219e | 3872 | return true; |
361f9cbc | 3873 | } |
dca6219e | 3874 | |
0598fd4a LP |
3875 | /* Are the data objects properly indexed by field objects? */ |
3876 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data) && | |
3877 | JOURNAL_HEADER_CONTAINS(f->header, n_fields) && | |
3878 | le64toh(f->header->n_data) > 0 && | |
3879 | le64toh(f->header->n_fields) == 0) | |
3880 | return true; | |
3881 | ||
fb0951b0 LP |
3882 | if (max_file_usec > 0) { |
3883 | usec_t t, h; | |
3884 | ||
3885 | h = le64toh(f->header->head_entry_realtime); | |
3886 | t = now(CLOCK_REALTIME); | |
3887 | ||
3888 | if (h > 0 && t > h + max_file_usec) | |
3889 | return true; | |
3890 | } | |
3891 | ||
dca6219e LP |
3892 | return false; |
3893 | } |