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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
87d2c1ff LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2011 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
87d2c1ff LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
87d2c1ff | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
87d2c1ff | 21 | #include <errno.h> |
87d2c1ff | 22 | #include <fcntl.h> |
82e24b00 | 23 | #include <inttypes.h> |
07630cea LP |
24 | #include <linux/magic.h> |
25 | #include <poll.h> | |
3fbf9cbb | 26 | #include <stddef.h> |
50f20cfd | 27 | #include <sys/inotify.h> |
85210bff | 28 | #include <sys/vfs.h> |
07630cea | 29 | #include <unistd.h> |
87d2c1ff LP |
30 | |
31 | #include "sd-journal.h" | |
c004493c | 32 | |
b5efdb8a | 33 | #include "alloc-util.h" |
07630cea LP |
34 | #include "catalog.h" |
35 | #include "compress.h" | |
a0956174 | 36 | #include "dirent-util.h" |
3ffd4af2 | 37 | #include "fd-util.h" |
07630cea | 38 | #include "fileio.h" |
f97b34a6 | 39 | #include "format-util.h" |
77601719 | 40 | #include "fs-util.h" |
07630cea LP |
41 | #include "hashmap.h" |
42 | #include "hostname-util.h" | |
c004493c | 43 | #include "io-util.h" |
87d2c1ff | 44 | #include "journal-def.h" |
cec736d2 | 45 | #include "journal-file.h" |
07630cea | 46 | #include "journal-internal.h" |
cec736d2 | 47 | #include "list.h" |
de7b95cd | 48 | #include "lookup3.h" |
85210bff | 49 | #include "missing.h" |
07630cea | 50 | #include "path-util.h" |
d4205751 | 51 | #include "replace-var.h" |
15a5e950 LP |
52 | #include "stat-util.h" |
53 | #include "stdio-util.h" | |
07630cea LP |
54 | #include "string-util.h" |
55 | #include "strv.h" | |
87d2c1ff | 56 | |
9e8abdf0 LP |
57 | #define JOURNAL_FILES_MAX 7168 |
58 | ||
85210bff LP |
59 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
60 | ||
d4205751 LP |
61 | #define REPLACE_VAR_MAX 256 |
62 | ||
93b73b06 LP |
63 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
64 | ||
a9a245c1 ZJS |
65 | static void remove_file_real(sd_journal *j, JournalFile *f); |
66 | ||
a65f06bb ZJS |
67 | static bool journal_pid_changed(sd_journal *j) { |
68 | assert(j); | |
69 | ||
70 | /* We don't support people creating a journal object and | |
71 | * keeping it around over a fork(). Let's complain. */ | |
72 | ||
df0ff127 | 73 | return j->original_pid != getpid_cached(); |
a65f06bb ZJS |
74 | } |
75 | ||
5768d259 LP |
76 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
77 | char *copy; | |
3ac251b8 LP |
78 | int k; |
79 | ||
5768d259 LP |
80 | /* Memorize an error we encountered, and store which |
81 | * file/directory it was generated from. Note that we store | |
82 | * only *one* path per error code, as the error code is the | |
83 | * key into the hashmap, and the path is the value. This means | |
84 | * we keep track only of all error kinds, but not of all error | |
85 | * locations. This has the benefit that the hashmap cannot | |
86 | * grow beyond bounds. | |
87 | * | |
88 | * We return an error here only if we didn't manage to | |
89 | * memorize the real error. */ | |
90 | ||
6fe391c5 ZJS |
91 | if (r >= 0) |
92 | return r; | |
93 | ||
5768d259 | 94 | k = hashmap_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
95 | if (k < 0) |
96 | return k; | |
97 | ||
5768d259 LP |
98 | if (path) { |
99 | copy = strdup(path); | |
100 | if (!copy) | |
101 | return -ENOMEM; | |
102 | } else | |
103 | copy = NULL; | |
104 | ||
105 | k = hashmap_put(j->errors, INT_TO_PTR(r), copy); | |
106 | if (k < 0) { | |
107 | free(copy); | |
108 | ||
109 | if (k == -EEXIST) | |
110 | return 0; | |
111 | ||
112 | return k; | |
113 | } | |
114 | ||
115 | return 0; | |
6fe391c5 ZJS |
116 | } |
117 | ||
de190aef | 118 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
119 | Iterator i; |
120 | JournalFile *f; | |
121 | ||
122 | assert(j); | |
123 | ||
124 | j->current_file = NULL; | |
125 | j->current_field = 0; | |
126 | ||
c1f906bd | 127 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 128 | journal_file_reset_location(f); |
8f9b6cd9 LP |
129 | } |
130 | ||
de190aef LP |
131 | static void reset_location(sd_journal *j) { |
132 | assert(j); | |
133 | ||
134 | detach_location(j); | |
135 | zero(j->current_location); | |
136 | } | |
137 | ||
a87247dd | 138 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 139 | assert(l); |
3742095b | 140 | assert(IN_SET(type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
141 | assert(f); |
142 | assert(o->object.type == OBJECT_ENTRY); | |
143 | ||
a87247dd | 144 | l->type = type; |
de190aef LP |
145 | l->seqnum = le64toh(o->entry.seqnum); |
146 | l->seqnum_id = f->header->seqnum_id; | |
147 | l->realtime = le64toh(o->entry.realtime); | |
148 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 149 | l->boot_id = o->entry.boot_id; |
de190aef LP |
150 | l->xor_hash = le64toh(o->entry.xor_hash); |
151 | ||
152 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
153 | } | |
154 | ||
1eb6332d | 155 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
156 | assert(j); |
157 | assert(f); | |
158 | assert(o); | |
159 | ||
1eb6332d | 160 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
161 | |
162 | j->current_file = f; | |
163 | j->current_field = 0; | |
164 | ||
6573ef05 MS |
165 | /* Let f know its candidate entry was picked. */ |
166 | assert(f->location_type == LOCATION_SEEK); | |
167 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
168 | } |
169 | ||
cbdca852 LP |
170 | static int match_is_valid(const void *data, size_t size) { |
171 | const char *b, *p; | |
172 | ||
173 | assert(data); | |
174 | ||
175 | if (size < 2) | |
176 | return false; | |
177 | ||
178 | if (startswith(data, "__")) | |
179 | return false; | |
180 | ||
181 | b = data; | |
182 | for (p = b; p < b + size; p++) { | |
183 | ||
184 | if (*p == '=') | |
185 | return p > b; | |
186 | ||
187 | if (*p == '_') | |
188 | continue; | |
189 | ||
190 | if (*p >= 'A' && *p <= 'Z') | |
191 | continue; | |
192 | ||
193 | if (*p >= '0' && *p <= '9') | |
194 | continue; | |
195 | ||
196 | return false; | |
197 | } | |
198 | ||
199 | return false; | |
200 | } | |
201 | ||
202 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
203 | const uint8_t *a = _a, *b = _b; |
204 | size_t j; | |
de190aef LP |
205 | |
206 | for (j = 0; j < s && j < t; j++) { | |
207 | ||
de190aef | 208 | if (a[j] != b[j]) |
cbdca852 | 209 | return false; |
de190aef | 210 | |
cbdca852 LP |
211 | if (a[j] == '=') |
212 | return true; | |
de190aef LP |
213 | } |
214 | ||
bc302926 | 215 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
216 | } |
217 | ||
218 | static Match *match_new(Match *p, MatchType t) { | |
219 | Match *m; | |
220 | ||
221 | m = new0(Match, 1); | |
222 | if (!m) | |
223 | return NULL; | |
224 | ||
225 | m->type = t; | |
226 | ||
227 | if (p) { | |
228 | m->parent = p; | |
71fda00f | 229 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
230 | } |
231 | ||
232 | return m; | |
233 | } | |
234 | ||
235 | static void match_free(Match *m) { | |
236 | assert(m); | |
237 | ||
238 | while (m->matches) | |
239 | match_free(m->matches); | |
240 | ||
241 | if (m->parent) | |
71fda00f | 242 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
243 | |
244 | free(m->data); | |
245 | free(m); | |
246 | } | |
247 | ||
248 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 249 | if (!m || m->matches) |
cbdca852 LP |
250 | return; |
251 | ||
252 | match_free(m); | |
de190aef LP |
253 | } |
254 | ||
a5344d2c | 255 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 256 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 257 | le64_t le_hash; |
87d2c1ff | 258 | |
1ae464e0 TA |
259 | assert_return(j, -EINVAL); |
260 | assert_return(!journal_pid_changed(j), -ECHILD); | |
261 | assert_return(data, -EINVAL); | |
cbdca852 LP |
262 | |
263 | if (size == 0) | |
264 | size = strlen(data); | |
265 | ||
1ae464e0 | 266 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 267 | |
cd34b3c6 HH |
268 | /* level 0: AND term |
269 | * level 1: OR terms | |
270 | * level 2: AND terms | |
271 | * level 3: OR terms | |
272 | * level 4: concrete matches */ | |
cbdca852 LP |
273 | |
274 | if (!j->level0) { | |
cd34b3c6 | 275 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
276 | if (!j->level0) |
277 | return -ENOMEM; | |
278 | } | |
279 | ||
280 | if (!j->level1) { | |
cd34b3c6 | 281 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
282 | if (!j->level1) |
283 | return -ENOMEM; | |
284 | } | |
285 | ||
cd34b3c6 HH |
286 | if (!j->level2) { |
287 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
288 | if (!j->level2) | |
289 | return -ENOMEM; | |
290 | } | |
291 | ||
292 | assert(j->level0->type == MATCH_AND_TERM); | |
293 | assert(j->level1->type == MATCH_OR_TERM); | |
294 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 295 | |
de190aef LP |
296 | le_hash = htole64(hash64(data, size)); |
297 | ||
cd34b3c6 HH |
298 | LIST_FOREACH(matches, l3, j->level2->matches) { |
299 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 300 | |
cd34b3c6 HH |
301 | LIST_FOREACH(matches, l4, l3->matches) { |
302 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 303 | |
cbdca852 LP |
304 | /* Exactly the same match already? Then ignore |
305 | * this addition */ | |
cd34b3c6 HH |
306 | if (l4->le_hash == le_hash && |
307 | l4->size == size && | |
308 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
309 | return 0; |
310 | ||
311 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
312 | if (same_field(data, size, l4->data, l4->size)) { |
313 | add_here = l3; | |
cbdca852 LP |
314 | break; |
315 | } | |
316 | } | |
317 | ||
318 | if (add_here) | |
319 | break; | |
de190aef LP |
320 | } |
321 | ||
cbdca852 | 322 | if (!add_here) { |
cd34b3c6 | 323 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
324 | if (!add_here) |
325 | goto fail; | |
326 | } | |
327 | ||
328 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 329 | if (!m) |
cbdca852 | 330 | goto fail; |
87d2c1ff | 331 | |
cbdca852 | 332 | m->le_hash = le_hash; |
1cc101f1 | 333 | m->size = size; |
cbdca852 LP |
334 | m->data = memdup(data, size); |
335 | if (!m->data) | |
336 | goto fail; | |
337 | ||
338 | detach_location(j); | |
339 | ||
340 | return 0; | |
341 | ||
342 | fail: | |
c5a10d9c ZJS |
343 | match_free_if_empty(add_here); |
344 | match_free_if_empty(j->level2); | |
345 | match_free_if_empty(j->level1); | |
346 | match_free_if_empty(j->level0); | |
cbdca852 LP |
347 | |
348 | return -ENOMEM; | |
349 | } | |
350 | ||
cd34b3c6 | 351 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
352 | assert_return(j, -EINVAL); |
353 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 354 | |
cbdca852 LP |
355 | if (!j->level0) |
356 | return 0; | |
357 | ||
358 | if (!j->level1) | |
359 | return 0; | |
360 | ||
361 | if (!j->level1->matches) | |
362 | return 0; | |
363 | ||
cd34b3c6 HH |
364 | j->level1 = NULL; |
365 | j->level2 = NULL; | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
371 | assert_return(j, -EINVAL); |
372 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
373 | |
374 | if (!j->level0) | |
375 | return 0; | |
376 | ||
377 | if (!j->level1) | |
378 | return 0; | |
379 | ||
380 | if (!j->level2) | |
381 | return 0; | |
382 | ||
383 | if (!j->level2->matches) | |
384 | return 0; | |
cbdca852 | 385 | |
cd34b3c6 | 386 | j->level2 = NULL; |
cbdca852 LP |
387 | return 0; |
388 | } | |
389 | ||
390 | static char *match_make_string(Match *m) { | |
6b430fdb | 391 | char *p = NULL, *r; |
cbdca852 LP |
392 | Match *i; |
393 | bool enclose = false; | |
394 | ||
395 | if (!m) | |
4ad16808 | 396 | return strdup("none"); |
cbdca852 LP |
397 | |
398 | if (m->type == MATCH_DISCRETE) | |
399 | return strndup(m->data, m->size); | |
400 | ||
cbdca852 LP |
401 | LIST_FOREACH(matches, i, m->matches) { |
402 | char *t, *k; | |
403 | ||
404 | t = match_make_string(i); | |
6b430fdb ZJS |
405 | if (!t) |
406 | return mfree(p); | |
cbdca852 LP |
407 | |
408 | if (p) { | |
605405c6 | 409 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t); |
cbdca852 LP |
410 | free(p); |
411 | free(t); | |
412 | ||
413 | if (!k) | |
414 | return NULL; | |
415 | ||
416 | p = k; | |
417 | ||
418 | enclose = true; | |
bc302926 | 419 | } else |
cbdca852 | 420 | p = t; |
87d2c1ff LP |
421 | } |
422 | ||
cbdca852 | 423 | if (enclose) { |
605405c6 | 424 | r = strjoin("(", p, ")"); |
cbdca852 LP |
425 | free(p); |
426 | return r; | |
427 | } | |
87d2c1ff | 428 | |
cbdca852 LP |
429 | return p; |
430 | } | |
de7b95cd | 431 | |
cbdca852 LP |
432 | char *journal_make_match_string(sd_journal *j) { |
433 | assert(j); | |
8f9b6cd9 | 434 | |
cbdca852 | 435 | return match_make_string(j->level0); |
87d2c1ff LP |
436 | } |
437 | ||
a5344d2c LP |
438 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
439 | if (!j) | |
440 | return; | |
87d2c1ff | 441 | |
cbdca852 LP |
442 | if (j->level0) |
443 | match_free(j->level0); | |
de7b95cd | 444 | |
cd34b3c6 | 445 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 446 | |
de190aef | 447 | detach_location(j); |
87d2c1ff LP |
448 | } |
449 | ||
487d3720 MS |
450 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
451 | assert(f); | |
de190aef | 452 | assert(l); |
487d3720 | 453 | assert(f->location_type == LOCATION_SEEK); |
4c701096 | 454 | assert(IN_SET(l->type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
455 | |
456 | if (l->monotonic_set && | |
487d3720 | 457 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 458 | l->realtime_set && |
487d3720 | 459 | f->current_realtime == l->realtime && |
de190aef | 460 | l->xor_hash_set && |
487d3720 | 461 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
462 | return 0; |
463 | ||
464 | if (l->seqnum_set && | |
487d3720 | 465 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 466 | |
487d3720 | 467 | if (f->current_seqnum < l->seqnum) |
de190aef | 468 | return -1; |
487d3720 | 469 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
470 | return 1; |
471 | } | |
472 | ||
473 | if (l->monotonic_set && | |
487d3720 | 474 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 475 | |
487d3720 | 476 | if (f->current_monotonic < l->monotonic) |
de190aef | 477 | return -1; |
487d3720 | 478 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
479 | return 1; |
480 | } | |
481 | ||
482 | if (l->realtime_set) { | |
483 | ||
487d3720 | 484 | if (f->current_realtime < l->realtime) |
de190aef | 485 | return -1; |
487d3720 | 486 | if (f->current_realtime > l->realtime) |
de190aef LP |
487 | return 1; |
488 | } | |
489 | ||
490 | if (l->xor_hash_set) { | |
de190aef | 491 | |
487d3720 | 492 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 493 | return -1; |
487d3720 | 494 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
495 | return 1; |
496 | } | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
cbdca852 LP |
501 | static int next_for_match( |
502 | sd_journal *j, | |
503 | Match *m, | |
504 | JournalFile *f, | |
505 | uint64_t after_offset, | |
506 | direction_t direction, | |
507 | Object **ret, | |
508 | uint64_t *offset) { | |
509 | ||
de7b95cd | 510 | int r; |
cbdca852 LP |
511 | uint64_t np = 0; |
512 | Object *n; | |
de7b95cd LP |
513 | |
514 | assert(j); | |
cbdca852 LP |
515 | assert(m); |
516 | assert(f); | |
de7b95cd | 517 | |
cbdca852 LP |
518 | if (m->type == MATCH_DISCRETE) { |
519 | uint64_t dp; | |
de190aef | 520 | |
cbdca852 | 521 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
522 | if (r <= 0) |
523 | return r; | |
524 | ||
cbdca852 | 525 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 526 | |
cbdca852 LP |
527 | } else if (m->type == MATCH_OR_TERM) { |
528 | Match *i; | |
de7b95cd | 529 | |
cbdca852 | 530 | /* Find the earliest match beyond after_offset */ |
de190aef | 531 | |
cbdca852 LP |
532 | LIST_FOREACH(matches, i, m->matches) { |
533 | uint64_t cp; | |
de190aef | 534 | |
cbdca852 | 535 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
536 | if (r < 0) |
537 | return r; | |
cbdca852 | 538 | else if (r > 0) { |
bc302926 | 539 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
540 | np = cp; |
541 | } | |
542 | } | |
b4e5f920 | 543 | |
bc302926 ZJS |
544 | if (np == 0) |
545 | return 0; | |
546 | ||
cbdca852 | 547 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 548 | Match *i, *last_moved; |
de190aef | 549 | |
cbdca852 | 550 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 551 | * this until we find an offset that matches for all |
cbdca852 | 552 | * matches. */ |
de190aef | 553 | |
cbdca852 LP |
554 | if (!m->matches) |
555 | return 0; | |
de7b95cd | 556 | |
2bc8ca0c ZJS |
557 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
558 | if (r <= 0) | |
559 | return r; | |
de190aef | 560 | |
2bc8ca0c ZJS |
561 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
562 | last_moved = m->matches; | |
de190aef | 563 | |
2bc8ca0c ZJS |
564 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
565 | uint64_t cp; | |
de190aef | 566 | |
2bc8ca0c ZJS |
567 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
568 | if (r <= 0) | |
569 | return r; | |
de190aef | 570 | |
2bc8ca0c ZJS |
571 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
572 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
573 | np = cp; | |
574 | last_moved = i; | |
de190aef | 575 | } |
2bc8ca0c | 576 | } |
cbdca852 | 577 | } |
de190aef | 578 | |
bc302926 | 579 | assert(np > 0); |
de190aef | 580 | |
cbdca852 LP |
581 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
582 | if (r < 0) | |
583 | return r; | |
de7b95cd | 584 | |
de190aef | 585 | if (ret) |
cbdca852 | 586 | *ret = n; |
de190aef | 587 | if (offset) |
cbdca852 | 588 | *offset = np; |
de190aef LP |
589 | |
590 | return 1; | |
591 | } | |
592 | ||
cbdca852 LP |
593 | static int find_location_for_match( |
594 | sd_journal *j, | |
595 | Match *m, | |
596 | JournalFile *f, | |
597 | direction_t direction, | |
598 | Object **ret, | |
599 | uint64_t *offset) { | |
600 | ||
de190aef | 601 | int r; |
de190aef LP |
602 | |
603 | assert(j); | |
cbdca852 | 604 | assert(m); |
de190aef | 605 | assert(f); |
de190aef | 606 | |
cbdca852 LP |
607 | if (m->type == MATCH_DISCRETE) { |
608 | uint64_t dp; | |
de190aef | 609 | |
cbdca852 | 610 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
611 | if (r <= 0) |
612 | return r; | |
613 | ||
cbdca852 | 614 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 615 | |
cbdca852 LP |
616 | if (j->current_location.type == LOCATION_HEAD) |
617 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
618 | if (j->current_location.type == LOCATION_TAIL) | |
619 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
620 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
621 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
622 | if (j->current_location.monotonic_set) { | |
623 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
624 | if (r != -ENOENT) | |
625 | return r; | |
626 | } | |
627 | if (j->current_location.realtime_set) | |
628 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 629 | |
cbdca852 | 630 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 631 | |
cbdca852 LP |
632 | } else if (m->type == MATCH_OR_TERM) { |
633 | uint64_t np = 0; | |
634 | Object *n; | |
635 | Match *i; | |
de7b95cd | 636 | |
cbdca852 | 637 | /* Find the earliest match */ |
de7b95cd | 638 | |
cbdca852 LP |
639 | LIST_FOREACH(matches, i, m->matches) { |
640 | uint64_t cp; | |
641 | ||
642 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
643 | if (r < 0) | |
644 | return r; | |
645 | else if (r > 0) { | |
646 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
647 | np = cp; | |
de190aef | 648 | } |
cbdca852 | 649 | } |
de190aef | 650 | |
cbdca852 LP |
651 | if (np == 0) |
652 | return 0; | |
de7b95cd | 653 | |
cbdca852 LP |
654 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
655 | if (r < 0) | |
656 | return r; | |
de7b95cd | 657 | |
cbdca852 LP |
658 | if (ret) |
659 | *ret = n; | |
660 | if (offset) | |
661 | *offset = np; | |
de190aef | 662 | |
cbdca852 | 663 | return 1; |
e892bd17 | 664 | |
cbdca852 LP |
665 | } else { |
666 | Match *i; | |
667 | uint64_t np = 0; | |
668 | ||
669 | assert(m->type == MATCH_AND_TERM); | |
670 | ||
671 | /* First jump to the last match, and then find the | |
672 | * next one where all matches match */ | |
673 | ||
674 | if (!m->matches) | |
675 | return 0; | |
676 | ||
677 | LIST_FOREACH(matches, i, m->matches) { | |
678 | uint64_t cp; | |
679 | ||
680 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
681 | if (r <= 0) | |
4b067dc9 LP |
682 | return r; |
683 | ||
bc302926 | 684 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 685 | np = cp; |
de7b95cd LP |
686 | } |
687 | ||
cbdca852 LP |
688 | return next_for_match(j, m, f, np, direction, ret, offset); |
689 | } | |
690 | } | |
de190aef | 691 | |
cbdca852 LP |
692 | static int find_location_with_matches( |
693 | sd_journal *j, | |
694 | JournalFile *f, | |
695 | direction_t direction, | |
696 | Object **ret, | |
697 | uint64_t *offset) { | |
698 | ||
699 | int r; | |
700 | ||
701 | assert(j); | |
702 | assert(f); | |
703 | assert(ret); | |
704 | assert(offset); | |
705 | ||
706 | if (!j->level0) { | |
707 | /* No matches is simple */ | |
708 | ||
709 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 710 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 711 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 712 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
713 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
714 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
715 | if (j->current_location.monotonic_set) { | |
716 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
717 | if (r != -ENOENT) | |
718 | return r; | |
de7b95cd | 719 | } |
cbdca852 LP |
720 | if (j->current_location.realtime_set) |
721 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 722 | |
f534928a | 723 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
724 | } else |
725 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
726 | } | |
de7b95cd | 727 | |
cbdca852 LP |
728 | static int next_with_matches( |
729 | sd_journal *j, | |
730 | JournalFile *f, | |
731 | direction_t direction, | |
732 | Object **ret, | |
733 | uint64_t *offset) { | |
734 | ||
cbdca852 LP |
735 | assert(j); |
736 | assert(f); | |
737 | assert(ret); | |
738 | assert(offset); | |
739 | ||
cbdca852 LP |
740 | /* No matches is easy. We simple advance the file |
741 | * pointer by one. */ | |
742 | if (!j->level0) | |
b29ddfcb | 743 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
744 | |
745 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 746 | * with an offset at least one step larger */ |
b29ddfcb MS |
747 | return next_for_match(j, j->level0, f, |
748 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
749 | : f->current_offset - 1, | |
750 | direction, ret, offset); | |
de7b95cd LP |
751 | } |
752 | ||
58439db4 | 753 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 754 | Object *c; |
6e693b42 | 755 | uint64_t cp, n_entries; |
cbdca852 | 756 | int r; |
de190aef LP |
757 | |
758 | assert(j); | |
759 | assert(f); | |
760 | ||
950c07d4 MS |
761 | n_entries = le64toh(f->header->n_entries); |
762 | ||
763 | /* If we hit EOF before, we don't need to look into this file again | |
764 | * unless direction changed or new entries appeared. */ | |
765 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
766 | n_entries == f->last_n_entries) | |
767 | return 0; | |
668c965a | 768 | |
950c07d4 MS |
769 | f->last_n_entries = n_entries; |
770 | ||
771 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
772 | /* LOCATION_SEEK here means we did the work in a previous |
773 | * iteration and the current location already points to a | |
774 | * candidate entry. */ | |
487d3720 MS |
775 | if (f->location_type != LOCATION_SEEK) { |
776 | r = next_with_matches(j, f, direction, &c, &cp); | |
777 | if (r <= 0) | |
778 | return r; | |
466ccd92 | 779 | |
950c07d4 | 780 | journal_file_save_location(f, c, cp); |
487d3720 | 781 | } |
de190aef | 782 | } else { |
950c07d4 MS |
783 | f->last_direction = direction; |
784 | ||
cbdca852 | 785 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
786 | if (r <= 0) |
787 | return r; | |
487d3720 | 788 | |
950c07d4 | 789 | journal_file_save_location(f, c, cp); |
de190aef LP |
790 | } |
791 | ||
bc302926 | 792 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
793 | * that is actually different from what we were previously |
794 | * looking at. This is necessary to handle entries which exist | |
795 | * in two (or more) journal files, and which shall all be | |
796 | * suppressed but one. */ | |
797 | ||
de190aef LP |
798 | for (;;) { |
799 | bool found; | |
800 | ||
801 | if (j->current_location.type == LOCATION_DISCRETE) { | |
802 | int k; | |
803 | ||
487d3720 | 804 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
805 | |
806 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
807 | } else |
808 | found = true; | |
809 | ||
487d3720 | 810 | if (found) |
de190aef | 811 | return 1; |
de190aef LP |
812 | |
813 | r = next_with_matches(j, f, direction, &c, &cp); | |
814 | if (r <= 0) | |
815 | return r; | |
487d3720 | 816 | |
950c07d4 | 817 | journal_file_save_location(f, c, cp); |
de190aef LP |
818 | } |
819 | } | |
820 | ||
e892bd17 | 821 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de | 822 | JournalFile *f, *new_file = NULL; |
cec736d2 | 823 | Iterator i; |
a002d44b | 824 | Object *o; |
87d2c1ff LP |
825 | int r; |
826 | ||
1ae464e0 TA |
827 | assert_return(j, -EINVAL); |
828 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 829 | |
c1f906bd | 830 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 831 | bool found; |
87d2c1ff | 832 | |
58439db4 | 833 | r = next_beyond_location(j, f, direction); |
e590af26 | 834 | if (r < 0) { |
da927ba9 | 835 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 836 | remove_file_real(j, f); |
e590af26 | 837 | continue; |
6573ef05 MS |
838 | } else if (r == 0) { |
839 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 840 | continue; |
6573ef05 | 841 | } |
87d2c1ff | 842 | |
468b21de | 843 | if (!new_file) |
de190aef LP |
844 | found = true; |
845 | else { | |
846 | int k; | |
847 | ||
d8ae66d7 | 848 | k = journal_file_compare_locations(f, new_file); |
de190aef | 849 | |
bc302926 | 850 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
851 | } |
852 | ||
e499c999 | 853 | if (found) |
468b21de | 854 | new_file = f; |
87d2c1ff LP |
855 | } |
856 | ||
468b21de | 857 | if (!new_file) |
de190aef | 858 | return 0; |
ae2cc8ef | 859 | |
e499c999 | 860 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
861 | if (r < 0) |
862 | return r; | |
863 | ||
1eb6332d | 864 | set_location(j, new_file, o); |
ae2cc8ef | 865 | |
de190aef LP |
866 | return 1; |
867 | } | |
ae2cc8ef | 868 | |
a5344d2c | 869 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
870 | return real_journal_next(j, DIRECTION_DOWN); |
871 | } | |
ae2cc8ef | 872 | |
a5344d2c | 873 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
874 | return real_journal_next(j, DIRECTION_UP); |
875 | } | |
ae2cc8ef | 876 | |
6f003b43 | 877 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 878 | int c = 0, r; |
ae2cc8ef | 879 | |
1ae464e0 TA |
880 | assert_return(j, -EINVAL); |
881 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 882 | |
6f003b43 LP |
883 | if (skip == 0) { |
884 | /* If this is not a discrete skip, then at least | |
885 | * resolve the current location */ | |
04884354 LK |
886 | if (j->current_location.type != LOCATION_DISCRETE) { |
887 | r = real_journal_next(j, direction); | |
888 | if (r < 0) | |
889 | return r; | |
890 | } | |
6f003b43 LP |
891 | |
892 | return 0; | |
893 | } | |
894 | ||
895 | do { | |
896 | r = real_journal_next(j, direction); | |
de190aef LP |
897 | if (r < 0) |
898 | return r; | |
899 | ||
900 | if (r == 0) | |
901 | return c; | |
902 | ||
903 | skip--; | |
904 | c++; | |
6f003b43 | 905 | } while (skip > 0); |
87d2c1ff | 906 | |
de190aef | 907 | return c; |
87d2c1ff LP |
908 | } |
909 | ||
6f003b43 LP |
910 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
911 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
912 | } | |
de190aef | 913 | |
6f003b43 LP |
914 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
915 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
916 | } |
917 | ||
a5344d2c | 918 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 919 | Object *o; |
87d2c1ff | 920 | int r; |
3fbf9cbb | 921 | char bid[33], sid[33]; |
87d2c1ff | 922 | |
1ae464e0 TA |
923 | assert_return(j, -EINVAL); |
924 | assert_return(!journal_pid_changed(j), -ECHILD); | |
925 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 926 | |
3fbf9cbb LP |
927 | if (!j->current_file || j->current_file->current_offset <= 0) |
928 | return -EADDRNOTAVAIL; | |
87d2c1ff | 929 | |
de190aef | 930 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
931 | if (r < 0) |
932 | return r; | |
933 | ||
3fbf9cbb LP |
934 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
935 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 936 | |
3fbf9cbb | 937 | if (asprintf(cursor, |
507f22bd ZJS |
938 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
939 | sid, le64toh(o->entry.seqnum), | |
940 | bid, le64toh(o->entry.monotonic), | |
941 | le64toh(o->entry.realtime), | |
942 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 943 | return -ENOMEM; |
87d2c1ff | 944 | |
6f47ad30 | 945 | return 0; |
87d2c1ff LP |
946 | } |
947 | ||
a5344d2c | 948 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 949 | const char *word, *state; |
de190aef | 950 | size_t l; |
de190aef LP |
951 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
952 | bool | |
953 | seqnum_id_set = false, | |
954 | seqnum_set = false, | |
955 | boot_id_set = false, | |
956 | monotonic_set = false, | |
957 | realtime_set = false, | |
958 | xor_hash_set = false; | |
959 | sd_id128_t seqnum_id, boot_id; | |
960 | ||
1ae464e0 TA |
961 | assert_return(j, -EINVAL); |
962 | assert_return(!journal_pid_changed(j), -ECHILD); | |
963 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 964 | |
a2a5291b | 965 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
966 | char *item; |
967 | int k = 0; | |
968 | ||
a2a5291b | 969 | if (l < 2 || word[1] != '=') |
de190aef LP |
970 | return -EINVAL; |
971 | ||
a2a5291b | 972 | item = strndup(word, l); |
de190aef LP |
973 | if (!item) |
974 | return -ENOMEM; | |
975 | ||
a2a5291b | 976 | switch (word[0]) { |
de190aef LP |
977 | |
978 | case 's': | |
979 | seqnum_id_set = true; | |
be3ea5ea | 980 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
981 | break; |
982 | ||
983 | case 'i': | |
984 | seqnum_set = true; | |
be3ea5ea | 985 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
986 | k = -EINVAL; |
987 | break; | |
988 | ||
989 | case 'b': | |
990 | boot_id_set = true; | |
be3ea5ea | 991 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
992 | break; |
993 | ||
994 | case 'm': | |
995 | monotonic_set = true; | |
be3ea5ea | 996 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
997 | k = -EINVAL; |
998 | break; | |
999 | ||
1000 | case 't': | |
1001 | realtime_set = true; | |
be3ea5ea | 1002 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1003 | k = -EINVAL; |
1004 | break; | |
1005 | ||
1006 | case 'x': | |
1007 | xor_hash_set = true; | |
be3ea5ea | 1008 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1009 | k = -EINVAL; |
1010 | break; | |
1011 | } | |
1012 | ||
1013 | free(item); | |
1014 | ||
1015 | if (k < 0) | |
1016 | return k; | |
1017 | } | |
1018 | ||
1019 | if ((!seqnum_set || !seqnum_id_set) && | |
1020 | (!monotonic_set || !boot_id_set) && | |
1021 | !realtime_set) | |
1022 | return -EINVAL; | |
1023 | ||
1024 | reset_location(j); | |
1025 | ||
a87247dd | 1026 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1027 | |
1028 | if (realtime_set) { | |
1029 | j->current_location.realtime = (uint64_t) realtime; | |
1030 | j->current_location.realtime_set = true; | |
1031 | } | |
1032 | ||
1033 | if (seqnum_set && seqnum_id_set) { | |
1034 | j->current_location.seqnum = (uint64_t) seqnum; | |
1035 | j->current_location.seqnum_id = seqnum_id; | |
1036 | j->current_location.seqnum_set = true; | |
1037 | } | |
1038 | ||
1039 | if (monotonic_set && boot_id_set) { | |
1040 | j->current_location.monotonic = (uint64_t) monotonic; | |
1041 | j->current_location.boot_id = boot_id; | |
1042 | j->current_location.monotonic_set = true; | |
1043 | } | |
1044 | ||
1045 | if (xor_hash_set) { | |
1046 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1047 | j->current_location.xor_hash_set = true; | |
1048 | } | |
1049 | ||
1050 | return 0; | |
1051 | } | |
1052 | ||
c6511e85 LP |
1053 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1054 | int r; | |
c6511e85 LP |
1055 | Object *o; |
1056 | ||
1ae464e0 TA |
1057 | assert_return(j, -EINVAL); |
1058 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1059 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1060 | |
1061 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1062 | return -EADDRNOTAVAIL; | |
1063 | ||
1064 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1065 | if (r < 0) | |
1066 | return r; | |
1067 | ||
9ed794a3 | 1068 | for (;;) { |
c6511e85 | 1069 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1070 | unsigned long long ll; |
7294bb5b | 1071 | sd_id128_t id; |
c6511e85 LP |
1072 | int k = 0; |
1073 | ||
7294bb5b SS |
1074 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1075 | if (r < 0) | |
1076 | return r; | |
c6511e85 | 1077 | |
7294bb5b SS |
1078 | if (r == 0) |
1079 | break; | |
c6511e85 | 1080 | |
7294bb5b SS |
1081 | if (strlen(item) < 2 || item[1] != '=') |
1082 | return -EINVAL; | |
1083 | ||
1084 | switch (item[0]) { | |
c6511e85 LP |
1085 | |
1086 | case 's': | |
1087 | k = sd_id128_from_string(item+2, &id); | |
1088 | if (k < 0) | |
1089 | return k; | |
1090 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1091 | return 0; | |
1092 | break; | |
1093 | ||
1094 | case 'i': | |
1095 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1096 | return -EINVAL; | |
1097 | if (ll != le64toh(o->entry.seqnum)) | |
1098 | return 0; | |
1099 | break; | |
1100 | ||
1101 | case 'b': | |
1102 | k = sd_id128_from_string(item+2, &id); | |
1103 | if (k < 0) | |
1104 | return k; | |
1105 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1106 | return 0; | |
1107 | break; | |
1108 | ||
1109 | case 'm': | |
1110 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1111 | return -EINVAL; | |
1112 | if (ll != le64toh(o->entry.monotonic)) | |
1113 | return 0; | |
1114 | break; | |
1115 | ||
1116 | case 't': | |
1117 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1118 | return -EINVAL; | |
1119 | if (ll != le64toh(o->entry.realtime)) | |
1120 | return 0; | |
1121 | break; | |
1122 | ||
1123 | case 'x': | |
1124 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1125 | return -EINVAL; | |
1126 | if (ll != le64toh(o->entry.xor_hash)) | |
1127 | return 0; | |
1128 | break; | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | return 1; | |
1133 | } | |
1134 | ||
1135 | ||
a5344d2c | 1136 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1137 | assert_return(j, -EINVAL); |
1138 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1139 | |
1140 | reset_location(j); | |
a87247dd | 1141 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1142 | j->current_location.boot_id = boot_id; |
1143 | j->current_location.monotonic = usec; | |
1144 | j->current_location.monotonic_set = true; | |
1145 | ||
1146 | return 0; | |
1147 | } | |
1148 | ||
a5344d2c | 1149 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1150 | assert_return(j, -EINVAL); |
1151 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1152 | |
1153 | reset_location(j); | |
a87247dd | 1154 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1155 | j->current_location.realtime = usec; |
1156 | j->current_location.realtime_set = true; | |
1157 | ||
1158 | return 0; | |
1159 | } | |
1160 | ||
a5344d2c | 1161 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1162 | assert_return(j, -EINVAL); |
1163 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1164 | |
1165 | reset_location(j); | |
1166 | j->current_location.type = LOCATION_HEAD; | |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | ||
a5344d2c | 1171 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1172 | assert_return(j, -EINVAL); |
1173 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1174 | |
1175 | reset_location(j); | |
1176 | j->current_location.type = LOCATION_TAIL; | |
1177 | ||
1178 | return 0; | |
87d2c1ff LP |
1179 | } |
1180 | ||
85210bff LP |
1181 | static void check_network(sd_journal *j, int fd) { |
1182 | struct statfs sfs; | |
1183 | ||
1184 | assert(j); | |
1185 | ||
1186 | if (j->on_network) | |
1187 | return; | |
1188 | ||
1189 | if (fstatfs(fd, &sfs) < 0) | |
1190 | return; | |
1191 | ||
1192 | j->on_network = | |
c51cf056 ZJS |
1193 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1194 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1195 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1196 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1197 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1198 | } |
1199 | ||
a688baa8 ZJS |
1200 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1201 | const char *full, *tilded, *atted; | |
1202 | ||
63c372cb LP |
1203 | full = strjoina(prefix, ".journal"); |
1204 | tilded = strjoina(full, "~"); | |
1205 | atted = strjoina(prefix, "@"); | |
a688baa8 ZJS |
1206 | |
1207 | return streq(filename, full) || | |
1208 | streq(filename, tilded) || | |
1209 | startswith(filename, atted); | |
1210 | } | |
1211 | ||
1212 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1213 | assert(filename); |
1214 | ||
a688baa8 ZJS |
1215 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) |
1216 | return false; | |
1217 | ||
1218 | /* no flags set → every type is OK */ | |
1219 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1220 | return true; | |
1221 | ||
1222 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1223 | return true; | |
1224 | ||
1225 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1226 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1227 | ||
5ffa8c81 | 1228 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1229 | |
1230 | if (file_has_type_prefix(prefix, filename)) | |
1231 | return true; | |
1232 | } | |
1233 | ||
1234 | return false; | |
1235 | } | |
1236 | ||
5d1ce257 LP |
1237 | static bool path_has_prefix(sd_journal *j, const char *path, const char *prefix) { |
1238 | assert(j); | |
1239 | assert(path); | |
1240 | assert(prefix); | |
1241 | ||
1242 | if (j->toplevel_fd >= 0) | |
1243 | return false; | |
1244 | ||
1245 | return path_startswith(path, prefix); | |
1246 | } | |
1247 | ||
1248 | static const char *skip_slash(const char *p) { | |
1249 | ||
1250 | if (!p) | |
1251 | return NULL; | |
1252 | ||
1253 | while (*p == '/') | |
1254 | p++; | |
1255 | ||
1256 | return p; | |
1257 | } | |
1258 | ||
1259 | static int add_any_file(sd_journal *j, int fd, const char *path) { | |
39883f62 | 1260 | JournalFile *f = NULL; |
5d1ce257 | 1261 | bool close_fd = false; |
d617408e | 1262 | int r, k; |
3fbf9cbb LP |
1263 | |
1264 | assert(j); | |
5d1ce257 | 1265 | assert(fd >= 0 || path); |
3fbf9cbb | 1266 | |
5d1ce257 | 1267 | if (path && ordered_hashmap_get(j->files, path)) |
50f20cfd | 1268 | return 0; |
50f20cfd | 1269 | |
9e8abdf0 | 1270 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
d617408e LP |
1271 | log_debug("Too many open journal files, not adding %s.", path); |
1272 | r = -ETOOMANYREFS; | |
1273 | goto fail; | |
9e8abdf0 LP |
1274 | } |
1275 | ||
5d1ce257 LP |
1276 | if (fd < 0 && j->toplevel_fd >= 0) { |
1277 | ||
1278 | /* If there's a top-level fd defined, open the file relative to this now. (Make the path relative, | |
1279 | * explicitly, since otherwise openat() ignores the first argument.) */ | |
1280 | ||
1281 | fd = openat(j->toplevel_fd, skip_slash(path), O_RDONLY|O_CLOEXEC); | |
1282 | if (fd < 0) { | |
1283 | r = log_debug_errno(errno, "Failed to open journal file %s: %m", path); | |
1284 | goto fail; | |
1285 | } | |
1286 | ||
1287 | close_fd = true; | |
1288 | } | |
1289 | ||
1290 | r = journal_file_open(fd, path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, NULL, &f); | |
d617408e | 1291 | if (r < 0) { |
5d1ce257 LP |
1292 | if (close_fd) |
1293 | safe_close(fd); | |
d617408e LP |
1294 | log_debug_errno(r, "Failed to open journal file %s: %m", path); |
1295 | goto fail; | |
1296 | } | |
3fbf9cbb | 1297 | |
72f59706 | 1298 | /* journal_file_dump(f); */ |
de190aef | 1299 | |
c1f906bd | 1300 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1301 | if (r < 0) { |
5d1ce257 | 1302 | f->close_fd = close_fd; |
69a3a6fd | 1303 | (void) journal_file_close(f); |
d617408e | 1304 | goto fail; |
3fbf9cbb LP |
1305 | } |
1306 | ||
5d1ce257 LP |
1307 | if (!j->has_runtime_files && path_has_prefix(j, f->path, "/run")) |
1308 | j->has_runtime_files = true; | |
1309 | else if (!j->has_persistent_files && path_has_prefix(j, f->path, "/var")) | |
1310 | j->has_persistent_files = true; | |
1311 | ||
5ec76417 | 1312 | log_debug("File %s added.", f->path); |
a50d7d43 | 1313 | |
85210bff LP |
1314 | check_network(j, f->fd); |
1315 | ||
313cefa1 | 1316 | j->current_invalidate_counter++; |
a963990f | 1317 | |
50f20cfd | 1318 | return 0; |
d617408e LP |
1319 | |
1320 | fail: | |
5768d259 | 1321 | k = journal_put_error(j, r, path); |
d617408e LP |
1322 | if (k < 0) |
1323 | return k; | |
1324 | ||
1325 | return r; | |
50f20cfd LP |
1326 | } |
1327 | ||
5302ebe1 | 1328 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
d617408e | 1329 | const char *path; |
5302ebe1 ZJS |
1330 | |
1331 | assert(j); | |
1332 | assert(prefix); | |
1333 | assert(filename); | |
1334 | ||
5d1ce257 | 1335 | if (j->no_new_files) |
5302ebe1 ZJS |
1336 | return 0; |
1337 | ||
5d1ce257 LP |
1338 | if (!file_type_wanted(j->flags, filename)) |
1339 | return 0; | |
39fd5b08 | 1340 | |
5d1ce257 LP |
1341 | path = strjoina(prefix, "/", filename); |
1342 | return add_any_file(j, -1, path); | |
5302ebe1 ZJS |
1343 | } |
1344 | ||
d617408e LP |
1345 | static void remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1346 | const char *path; | |
50f20cfd LP |
1347 | JournalFile *f; |
1348 | ||
1349 | assert(j); | |
1350 | assert(prefix); | |
1351 | assert(filename); | |
1352 | ||
d617408e | 1353 | path = strjoina(prefix, "/", filename); |
c1f906bd | 1354 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1355 | if (!f) |
d617408e | 1356 | return; |
50f20cfd | 1357 | |
a9a245c1 | 1358 | remove_file_real(j, f); |
a9a245c1 ZJS |
1359 | } |
1360 | ||
1361 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1362 | assert(j); | |
1363 | assert(f); | |
1364 | ||
c1f906bd | 1365 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1366 | |
5ec76417 | 1367 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1368 | |
3c1668da LP |
1369 | if (j->current_file == f) { |
1370 | j->current_file = NULL; | |
1371 | j->current_field = 0; | |
1372 | } | |
1373 | ||
1374 | if (j->unique_file == f) { | |
360af4cf | 1375 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1376 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1377 | j->unique_offset = 0; |
360af4cf ZJS |
1378 | if (!j->unique_file) |
1379 | j->unique_file_lost = true; | |
3c1668da LP |
1380 | } |
1381 | ||
eb86030e LP |
1382 | if (j->fields_file == f) { |
1383 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1384 | j->fields_offset = 0; | |
1385 | if (!j->fields_file) | |
1386 | j->fields_file_lost = true; | |
1387 | } | |
1388 | ||
69a3a6fd | 1389 | (void) journal_file_close(f); |
50f20cfd | 1390 | |
313cefa1 | 1391 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1392 | } |
1393 | ||
d617408e LP |
1394 | static int dirname_is_machine_id(const char *fn) { |
1395 | sd_id128_t id, machine; | |
1396 | int r; | |
1397 | ||
1398 | r = sd_id128_get_machine(&machine); | |
1399 | if (r < 0) | |
1400 | return r; | |
1401 | ||
1402 | r = sd_id128_from_string(fn, &id); | |
1403 | if (r < 0) | |
1404 | return r; | |
1405 | ||
1406 | return sd_id128_equal(id, machine); | |
1407 | } | |
1408 | ||
a963990f | 1409 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1410 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1411 | _cleanup_closedir_ DIR *d = NULL; |
d617408e | 1412 | struct dirent *de = NULL; |
a963990f | 1413 | Directory *m; |
d617408e | 1414 | int r, k; |
3fbf9cbb LP |
1415 | |
1416 | assert(j); | |
1417 | assert(prefix); | |
3fbf9cbb | 1418 | |
5d1ce257 LP |
1419 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1420 | * and reenumerates directory contents */ | |
d95b1fb3 | 1421 | |
5d1ce257 | 1422 | if (dirname) |
605405c6 | 1423 | path = strjoin(prefix, "/", dirname); |
5d1ce257 LP |
1424 | else |
1425 | path = strdup(prefix); | |
d617408e LP |
1426 | if (!path) { |
1427 | r = -ENOMEM; | |
1428 | goto fail; | |
1429 | } | |
3fbf9cbb | 1430 | |
5d1ce257 LP |
1431 | log_debug("Considering directory %s.", path); |
1432 | ||
1433 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1434 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1435 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
1436 | return 0; | |
1437 | ||
1438 | ||
1439 | if (j->toplevel_fd < 0) | |
1440 | d = opendir(path); | |
1441 | else | |
61233823 | 1442 | /* Open the specified directory relative to the toplevel fd. Enforce that the path specified is |
5d1ce257 LP |
1443 | * relative, by dropping the initial slash */ |
1444 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
3fbf9cbb | 1445 | if (!d) { |
d617408e LP |
1446 | r = log_debug_errno(errno, "Failed to open directory %s: %m", path); |
1447 | goto fail; | |
3fbf9cbb LP |
1448 | } |
1449 | ||
a963990f LP |
1450 | m = hashmap_get(j->directories_by_path, path); |
1451 | if (!m) { | |
1452 | m = new0(Directory, 1); | |
d617408e LP |
1453 | if (!m) { |
1454 | r = -ENOMEM; | |
1455 | goto fail; | |
1456 | } | |
a963990f LP |
1457 | |
1458 | m->is_root = false; | |
1459 | m->path = path; | |
1460 | ||
1461 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1462 | free(m); |
d617408e LP |
1463 | r = -ENOMEM; |
1464 | goto fail; | |
a963990f LP |
1465 | } |
1466 | ||
a50d7d43 | 1467 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1468 | j->current_invalidate_counter++; |
a963990f | 1469 | |
5ec76417 | 1470 | log_debug("Directory %s added.", m->path); |
a963990f | 1471 | |
a50d7d43 | 1472 | } else if (m->is_root) |
a963990f | 1473 | return 0; |
a963990f LP |
1474 | |
1475 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
5d1ce257 | 1476 | /* Watch this directory, if it not being watched yet. */ |
a963990f | 1477 | |
430fbf8e LP |
1478 | m->wd = inotify_add_watch_fd(j->inotify_fd, dirfd(d), |
1479 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1480 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1481 | IN_ONLYDIR); | |
a963990f LP |
1482 | |
1483 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1484 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1485 | } | |
1486 | ||
f6377261 | 1487 | FOREACH_DIRENT_ALL(de, d, r = log_debug_errno(errno, "Failed to read directory %s: %m", m->path); goto fail) { |
a963990f | 1488 | |
de2c3907 | 1489 | if (dirent_is_file_with_suffix(de, ".journal") || |
d617408e LP |
1490 | dirent_is_file_with_suffix(de, ".journal~")) |
1491 | (void) add_file(j, m->path, de->d_name); | |
a963990f LP |
1492 | } |
1493 | ||
85210bff LP |
1494 | check_network(j, dirfd(d)); |
1495 | ||
a963990f | 1496 | return 0; |
d617408e LP |
1497 | |
1498 | fail: | |
5d1ce257 | 1499 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1500 | if (k < 0) |
1501 | return k; | |
1502 | ||
1503 | return r; | |
a963990f LP |
1504 | } |
1505 | ||
d617408e | 1506 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1507 | |
7fd1b19b | 1508 | _cleanup_closedir_ DIR *d = NULL; |
d617408e | 1509 | struct dirent *de; |
a963990f | 1510 | Directory *m; |
d617408e | 1511 | int r, k; |
a963990f LP |
1512 | |
1513 | assert(j); | |
a963990f | 1514 | |
5d1ce257 LP |
1515 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1516 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1517 | * populate the set, as well as to update it later. */ | |
a963990f | 1518 | |
5d1ce257 LP |
1519 | if (p) { |
1520 | /* If there's a path specified, use it. */ | |
b6741478 | 1521 | |
5d1ce257 LP |
1522 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1523 | !path_has_prefix(j, p, "/run")) | |
1524 | return -EINVAL; | |
d617408e | 1525 | |
5d1ce257 LP |
1526 | if (j->prefix) |
1527 | p = strjoina(j->prefix, p); | |
1528 | ||
1529 | if (j->toplevel_fd < 0) | |
1530 | d = opendir(p); | |
1531 | else | |
1532 | d = xopendirat(j->toplevel_fd, skip_slash(p), 0); | |
1533 | ||
1534 | if (!d) { | |
1535 | if (errno == ENOENT && missing_ok) | |
1536 | return 0; | |
1537 | ||
1538 | r = log_debug_errno(errno, "Failed to open root directory %s: %m", p); | |
1539 | goto fail; | |
1540 | } | |
1541 | } else { | |
1542 | int dfd; | |
1543 | ||
1544 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1545 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1546 | ||
1547 | p = "."; /* store this as "." in the directories hashmap */ | |
1548 | ||
1549 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1550 | if (dfd < 0) { | |
1551 | r = -errno; | |
1552 | goto fail; | |
1553 | } | |
1554 | ||
1555 | d = fdopendir(dfd); | |
1556 | if (!d) { | |
1557 | r = -errno; | |
1558 | safe_close(dfd); | |
1559 | goto fail; | |
1560 | } | |
1561 | ||
1562 | rewinddir(d); | |
d617408e | 1563 | } |
a963990f LP |
1564 | |
1565 | m = hashmap_get(j->directories_by_path, p); | |
1566 | if (!m) { | |
1567 | m = new0(Directory, 1); | |
d617408e LP |
1568 | if (!m) { |
1569 | r = -ENOMEM; | |
1570 | goto fail; | |
1571 | } | |
a963990f LP |
1572 | |
1573 | m->is_root = true; | |
5d1ce257 | 1574 | |
a963990f LP |
1575 | m->path = strdup(p); |
1576 | if (!m->path) { | |
a963990f | 1577 | free(m); |
d617408e LP |
1578 | r = -ENOMEM; |
1579 | goto fail; | |
a963990f LP |
1580 | } |
1581 | ||
1582 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1583 | free(m->path); |
1584 | free(m); | |
d617408e LP |
1585 | r = -ENOMEM; |
1586 | goto fail; | |
a963990f LP |
1587 | } |
1588 | ||
313cefa1 | 1589 | j->current_invalidate_counter++; |
a963990f | 1590 | |
5ec76417 | 1591 | log_debug("Root directory %s added.", m->path); |
a963990f | 1592 | |
a50d7d43 | 1593 | } else if (!m->is_root) |
a963990f | 1594 | return 0; |
50f20cfd | 1595 | |
a963990f LP |
1596 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1597 | ||
430fbf8e | 1598 | m->wd = inotify_add_watch_fd(j->inotify_fd, dirfd(d), |
a963990f | 1599 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| |
4a842cad | 1600 | IN_ONLYDIR); |
a963990f LP |
1601 | |
1602 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1603 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1604 | } | |
50f20cfd | 1605 | |
5302ebe1 ZJS |
1606 | if (j->no_new_files) |
1607 | return 0; | |
1608 | ||
f6377261 | 1609 | FOREACH_DIRENT_ALL(de, d, r = log_debug_errno(errno, "Failed to read directory %s: %m", m->path); goto fail) { |
a963990f | 1610 | sd_id128_t id; |
3fbf9cbb | 1611 | |
de2c3907 | 1612 | if (dirent_is_file_with_suffix(de, ".journal") || |
d617408e LP |
1613 | dirent_is_file_with_suffix(de, ".journal~")) |
1614 | (void) add_file(j, m->path, de->d_name); | |
1615 | else if (IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN) && | |
1616 | sd_id128_from_string(de->d_name, &id) >= 0) | |
1617 | (void) add_directory(j, m->path, de->d_name); | |
3fbf9cbb LP |
1618 | } |
1619 | ||
85210bff LP |
1620 | check_network(j, dirfd(d)); |
1621 | ||
a963990f | 1622 | return 0; |
d617408e LP |
1623 | |
1624 | fail: | |
5768d259 | 1625 | k = journal_put_error(j, r, p); |
d617408e LP |
1626 | if (k < 0) |
1627 | return k; | |
1628 | ||
1629 | return r; | |
a963990f LP |
1630 | } |
1631 | ||
b2b46f91 | 1632 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1633 | assert(j); |
1634 | ||
1635 | if (d->wd > 0) { | |
1636 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1637 | ||
1638 | if (j->inotify_fd >= 0) | |
1639 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1640 | } | |
1641 | ||
1642 | hashmap_remove(j->directories_by_path, d->path); | |
1643 | ||
1644 | if (d->is_root) | |
5ec76417 | 1645 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1646 | else |
5ec76417 | 1647 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1648 | |
1649 | free(d->path); | |
1650 | free(d); | |
3fbf9cbb LP |
1651 | } |
1652 | ||
89739579 | 1653 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1654 | |
1655 | static const char search_paths[] = | |
a963990f LP |
1656 | "/run/log/journal\0" |
1657 | "/var/log/journal\0"; | |
1658 | const char *p; | |
50f20cfd LP |
1659 | |
1660 | assert(j); | |
50f20cfd | 1661 | |
a963990f LP |
1662 | /* We ignore most errors here, since the idea is to only open |
1663 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1664 | |
d617408e LP |
1665 | NULSTR_FOREACH(p, search_paths) |
1666 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1667 | |
574b77ef MB |
1668 | if (!(j->flags & SD_JOURNAL_LOCAL_ONLY)) |
1669 | (void) add_root_directory(j, "/var/log/journal/remote", true); | |
1670 | ||
a963990f | 1671 | return 0; |
50f20cfd LP |
1672 | } |
1673 | ||
5302ebe1 ZJS |
1674 | static int add_current_paths(sd_journal *j) { |
1675 | Iterator i; | |
1676 | JournalFile *f; | |
1677 | ||
1678 | assert(j); | |
1679 | assert(j->no_new_files); | |
1680 | ||
5d1ce257 | 1681 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1682 | * treat them as fatal. */ |
1683 | ||
c1f906bd | 1684 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1685 | _cleanup_free_ char *dir; |
e9174f29 | 1686 | int r; |
5302ebe1 ZJS |
1687 | |
1688 | dir = dirname_malloc(f->path); | |
1689 | if (!dir) | |
1690 | return -ENOMEM; | |
1691 | ||
5d1ce257 | 1692 | r = add_directory(j, dir, NULL); |
d617408e | 1693 | if (r < 0) |
5302ebe1 | 1694 | return r; |
5302ebe1 ZJS |
1695 | } |
1696 | ||
1697 | return 0; | |
1698 | } | |
1699 | ||
a963990f | 1700 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1701 | assert(j); |
50f20cfd | 1702 | |
a963990f LP |
1703 | if (j->inotify_fd < 0) { |
1704 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1705 | if (j->inotify_fd < 0) | |
1706 | return -errno; | |
1707 | } | |
50f20cfd | 1708 | |
cb306f5d | 1709 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
1710 | } |
1711 | ||
7827b1a1 | 1712 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1713 | sd_journal *j; |
50f20cfd | 1714 | |
a963990f LP |
1715 | j = new0(sd_journal, 1); |
1716 | if (!j) | |
1717 | return NULL; | |
50f20cfd | 1718 | |
df0ff127 | 1719 | j->original_pid = getpid_cached(); |
5d1ce257 | 1720 | j->toplevel_fd = -1; |
a963990f LP |
1721 | j->inotify_fd = -1; |
1722 | j->flags = flags; | |
93b73b06 | 1723 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1724 | |
7827b1a1 | 1725 | if (path) { |
16fefe90 ZJS |
1726 | char *t; |
1727 | ||
1728 | t = strdup(path); | |
1729 | if (!t) | |
6180fc61 | 1730 | goto fail; |
16fefe90 ZJS |
1731 | |
1732 | if (flags & SD_JOURNAL_OS_ROOT) | |
1733 | j->prefix = t; | |
1734 | else | |
1735 | j->path = t; | |
7827b1a1 LP |
1736 | } |
1737 | ||
c1f906bd | 1738 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1739 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1740 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1741 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1742 | goto fail; |
16e9f408 | 1743 | |
a963990f | 1744 | return j; |
6180fc61 ZJS |
1745 | |
1746 | fail: | |
1747 | sd_journal_close(j); | |
1748 | return NULL; | |
50f20cfd LP |
1749 | } |
1750 | ||
1aaa68f5 ZJS |
1751 | #define OPEN_ALLOWED_FLAGS \ |
1752 | (SD_JOURNAL_LOCAL_ONLY | \ | |
1753 | SD_JOURNAL_RUNTIME_ONLY | \ | |
1754 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER) | |
1755 | ||
a5344d2c | 1756 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1757 | sd_journal *j; |
3fbf9cbb | 1758 | int r; |
87d2c1ff | 1759 | |
1ae464e0 | 1760 | assert_return(ret, -EINVAL); |
1aaa68f5 | 1761 | assert_return((flags & ~OPEN_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1762 | |
7827b1a1 | 1763 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1764 | if (!j) |
1765 | return -ENOMEM; | |
1766 | ||
89739579 | 1767 | r = add_search_paths(j); |
a963990f | 1768 | if (r < 0) |
50f20cfd | 1769 | goto fail; |
50f20cfd | 1770 | |
a963990f LP |
1771 | *ret = j; |
1772 | return 0; | |
cf244689 | 1773 | |
a963990f LP |
1774 | fail: |
1775 | sd_journal_close(j); | |
87d2c1ff | 1776 | |
a963990f LP |
1777 | return r; |
1778 | } | |
50f20cfd | 1779 | |
1aaa68f5 ZJS |
1780 | #define OPEN_CONTAINER_ALLOWED_FLAGS \ |
1781 | (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM) | |
1782 | ||
b6741478 LP |
1783 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1784 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1785 | sd_journal *j; | |
1786 | char *p; | |
1787 | int r; | |
1788 | ||
2daa9cbd LP |
1789 | /* This is pretty much deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
1790 | * combination with sd_journal_open_directory_fd(). */ | |
1791 | ||
b6741478 LP |
1792 | assert_return(machine, -EINVAL); |
1793 | assert_return(ret, -EINVAL); | |
1aaa68f5 | 1794 | assert_return((flags & ~OPEN_CONTAINER_ALLOWED_FLAGS) == 0, -EINVAL); |
affcf189 | 1795 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1796 | |
63c372cb | 1797 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1798 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1799 | if (r == -ENOENT) | |
1800 | return -EHOSTDOWN; | |
1801 | if (r < 0) | |
1802 | return r; | |
1803 | if (!root) | |
1804 | return -ENODATA; | |
1805 | ||
1806 | if (!streq_ptr(class, "container")) | |
1807 | return -EIO; | |
1808 | ||
16fefe90 | 1809 | j = journal_new(flags, root); |
b6741478 LP |
1810 | if (!j) |
1811 | return -ENOMEM; | |
1812 | ||
89739579 | 1813 | r = add_search_paths(j); |
b6741478 LP |
1814 | if (r < 0) |
1815 | goto fail; | |
1816 | ||
1817 | *ret = j; | |
1818 | return 0; | |
1819 | ||
1820 | fail: | |
1821 | sd_journal_close(j); | |
1822 | return r; | |
1823 | } | |
1824 | ||
1aaa68f5 | 1825 | #define OPEN_DIRECTORY_ALLOWED_FLAGS \ |
10752e82 ZJS |
1826 | (SD_JOURNAL_OS_ROOT | \ |
1827 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 1828 | |
a963990f LP |
1829 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1830 | sd_journal *j; | |
1831 | int r; | |
87d2c1ff | 1832 | |
1ae464e0 TA |
1833 | assert_return(ret, -EINVAL); |
1834 | assert_return(path, -EINVAL); | |
1aaa68f5 | 1835 | assert_return((flags & ~OPEN_DIRECTORY_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1836 | |
7827b1a1 | 1837 | j = journal_new(flags, path); |
a963990f LP |
1838 | if (!j) |
1839 | return -ENOMEM; | |
3fbf9cbb | 1840 | |
d077390c LP |
1841 | if (flags & SD_JOURNAL_OS_ROOT) |
1842 | r = add_search_paths(j); | |
1843 | else | |
1844 | r = add_root_directory(j, path, false); | |
d617408e | 1845 | if (r < 0) |
a963990f | 1846 | goto fail; |
87d2c1ff LP |
1847 | |
1848 | *ret = j; | |
1849 | return 0; | |
1850 | ||
1851 | fail: | |
1852 | sd_journal_close(j); | |
87d2c1ff | 1853 | return r; |
a963990f | 1854 | } |
87d2c1ff | 1855 | |
5302ebe1 ZJS |
1856 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1857 | sd_journal *j; | |
1858 | const char **path; | |
1859 | int r; | |
1860 | ||
1ae464e0 TA |
1861 | assert_return(ret, -EINVAL); |
1862 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1863 | |
1864 | j = journal_new(flags, NULL); | |
1865 | if (!j) | |
1866 | return -ENOMEM; | |
1867 | ||
1868 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 1869 | r = add_any_file(j, -1, *path); |
d617408e | 1870 | if (r < 0) |
5302ebe1 | 1871 | goto fail; |
5302ebe1 ZJS |
1872 | } |
1873 | ||
1874 | j->no_new_files = true; | |
1875 | ||
1876 | *ret = j; | |
1877 | return 0; | |
1878 | ||
1879 | fail: | |
1880 | sd_journal_close(j); | |
5d1ce257 LP |
1881 | return r; |
1882 | } | |
1883 | ||
1aaa68f5 | 1884 | #define OPEN_DIRECTORY_FD_ALLOWED_FLAGS \ |
10752e82 ZJS |
1885 | (SD_JOURNAL_OS_ROOT | \ |
1886 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 1887 | |
5d1ce257 LP |
1888 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { |
1889 | sd_journal *j; | |
1890 | struct stat st; | |
1891 | int r; | |
1892 | ||
1893 | assert_return(ret, -EINVAL); | |
1894 | assert_return(fd >= 0, -EBADF); | |
1aaa68f5 | 1895 | assert_return((flags & ~OPEN_DIRECTORY_FD_ALLOWED_FLAGS) == 0, -EINVAL); |
5d1ce257 LP |
1896 | |
1897 | if (fstat(fd, &st) < 0) | |
1898 | return -errno; | |
1899 | ||
1900 | if (!S_ISDIR(st.st_mode)) | |
1901 | return -EBADFD; | |
1902 | ||
1903 | j = journal_new(flags, NULL); | |
1904 | if (!j) | |
1905 | return -ENOMEM; | |
1906 | ||
1907 | j->toplevel_fd = fd; | |
1908 | ||
d077390c LP |
1909 | if (flags & SD_JOURNAL_OS_ROOT) |
1910 | r = add_search_paths(j); | |
1911 | else | |
1912 | r = add_root_directory(j, NULL, false); | |
5d1ce257 LP |
1913 | if (r < 0) |
1914 | goto fail; | |
1915 | ||
1916 | *ret = j; | |
1917 | return 0; | |
1918 | ||
1919 | fail: | |
1920 | sd_journal_close(j); | |
1921 | return r; | |
1922 | } | |
1923 | ||
1924 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
1925 | Iterator iterator; | |
1926 | JournalFile *f; | |
1927 | sd_journal *j; | |
1928 | unsigned i; | |
1929 | int r; | |
1930 | ||
1931 | assert_return(ret, -EINVAL); | |
1932 | assert_return(n_fds > 0, -EBADF); | |
1933 | assert_return(flags == 0, -EINVAL); | |
1934 | ||
1935 | j = journal_new(flags, NULL); | |
1936 | if (!j) | |
1937 | return -ENOMEM; | |
1938 | ||
1939 | for (i = 0; i < n_fds; i++) { | |
1940 | struct stat st; | |
1941 | ||
1942 | if (fds[i] < 0) { | |
1943 | r = -EBADF; | |
1944 | goto fail; | |
1945 | } | |
1946 | ||
1947 | if (fstat(fds[i], &st) < 0) { | |
1948 | r = -errno; | |
1949 | goto fail; | |
1950 | } | |
1951 | ||
1952 | if (!S_ISREG(st.st_mode)) { | |
1953 | r = -EBADFD; | |
1954 | goto fail; | |
1955 | } | |
1956 | ||
1957 | r = add_any_file(j, fds[i], NULL); | |
1958 | if (r < 0) | |
1959 | goto fail; | |
1960 | } | |
1961 | ||
1962 | j->no_new_files = true; | |
1963 | j->no_inotify = true; | |
5302ebe1 | 1964 | |
5d1ce257 LP |
1965 | *ret = j; |
1966 | return 0; | |
1967 | ||
1968 | fail: | |
f8e2f4d6 | 1969 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 LP |
1970 | * remain open */ |
1971 | ORDERED_HASHMAP_FOREACH(f, j->files, iterator) | |
1972 | f->close_fd = false; | |
1973 | ||
1974 | sd_journal_close(j); | |
5302ebe1 ZJS |
1975 | return r; |
1976 | } | |
1977 | ||
a5344d2c | 1978 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1979 | Directory *d; |
1980 | JournalFile *f; | |
5768d259 | 1981 | char *p; |
a963990f | 1982 | |
a5344d2c LP |
1983 | if (!j) |
1984 | return; | |
87d2c1ff | 1985 | |
54b1da83 LP |
1986 | sd_journal_flush_matches(j); |
1987 | ||
c1f906bd | 1988 | while ((f = ordered_hashmap_steal_first(j->files))) |
69a3a6fd | 1989 | (void) journal_file_close(f); |
50f20cfd | 1990 | |
c1f906bd | 1991 | ordered_hashmap_free(j->files); |
260a2be4 | 1992 | |
a963990f LP |
1993 | while ((d = hashmap_first(j->directories_by_path))) |
1994 | remove_directory(j, d); | |
260a2be4 | 1995 | |
a963990f LP |
1996 | while ((d = hashmap_first(j->directories_by_wd))) |
1997 | remove_directory(j, d); | |
87d2c1ff | 1998 | |
a963990f LP |
1999 | hashmap_free(j->directories_by_path); |
2000 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 2001 | |
03e334a1 | 2002 | safe_close(j->inotify_fd); |
50f20cfd | 2003 | |
bf807d4d LP |
2004 | if (j->mmap) { |
2005 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 2006 | mmap_cache_unref(j->mmap); |
bf807d4d | 2007 | } |
16e9f408 | 2008 | |
5768d259 LP |
2009 | while ((p = hashmap_steal_first(j->errors))) |
2010 | free(p); | |
2011 | hashmap_free(j->errors); | |
2012 | ||
7827b1a1 | 2013 | free(j->path); |
89739579 | 2014 | free(j->prefix); |
3c1668da | 2015 | free(j->unique_field); |
eb86030e | 2016 | free(j->fields_buffer); |
87d2c1ff LP |
2017 | free(j); |
2018 | } | |
3fbf9cbb | 2019 | |
a5344d2c | 2020 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
2021 | Object *o; |
2022 | JournalFile *f; | |
2023 | int r; | |
2024 | ||
1ae464e0 TA |
2025 | assert_return(j, -EINVAL); |
2026 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2027 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
2028 | |
2029 | f = j->current_file; | |
2030 | if (!f) | |
de190aef | 2031 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2032 | |
2033 | if (f->current_offset <= 0) | |
de190aef | 2034 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2035 | |
de190aef | 2036 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2037 | if (r < 0) |
2038 | return r; | |
2039 | ||
2040 | *ret = le64toh(o->entry.realtime); | |
de190aef | 2041 | return 0; |
3fbf9cbb LP |
2042 | } |
2043 | ||
a5344d2c | 2044 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
2045 | Object *o; |
2046 | JournalFile *f; | |
2047 | int r; | |
2048 | sd_id128_t id; | |
2049 | ||
1ae464e0 TA |
2050 | assert_return(j, -EINVAL); |
2051 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
2052 | |
2053 | f = j->current_file; | |
2054 | if (!f) | |
de190aef | 2055 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2056 | |
2057 | if (f->current_offset <= 0) | |
de190aef | 2058 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2059 | |
de190aef | 2060 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2061 | if (r < 0) |
2062 | return r; | |
2063 | ||
de190aef LP |
2064 | if (ret_boot_id) |
2065 | *ret_boot_id = o->entry.boot_id; | |
2066 | else { | |
2067 | r = sd_id128_get_boot(&id); | |
2068 | if (r < 0) | |
2069 | return r; | |
3fbf9cbb | 2070 | |
de190aef | 2071 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2072 | return -ESTALE; |
de190aef | 2073 | } |
3fbf9cbb | 2074 | |
14a65d65 LP |
2075 | if (ret) |
2076 | *ret = le64toh(o->entry.monotonic); | |
2077 | ||
de190aef | 2078 | return 0; |
3fbf9cbb LP |
2079 | } |
2080 | ||
362a3f81 LP |
2081 | static bool field_is_valid(const char *field) { |
2082 | const char *p; | |
2083 | ||
2084 | assert(field); | |
2085 | ||
2086 | if (isempty(field)) | |
2087 | return false; | |
2088 | ||
2089 | if (startswith(field, "__")) | |
2090 | return false; | |
2091 | ||
2092 | for (p = field; *p; p++) { | |
2093 | ||
2094 | if (*p == '_') | |
2095 | continue; | |
2096 | ||
2097 | if (*p >= 'A' && *p <= 'Z') | |
2098 | continue; | |
2099 | ||
2100 | if (*p >= '0' && *p <= '9') | |
2101 | continue; | |
2102 | ||
2103 | return false; | |
2104 | } | |
2105 | ||
2106 | return true; | |
2107 | } | |
2108 | ||
a5344d2c | 2109 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
2110 | JournalFile *f; |
2111 | uint64_t i, n; | |
2112 | size_t field_length; | |
2113 | int r; | |
2114 | Object *o; | |
2115 | ||
1ae464e0 TA |
2116 | assert_return(j, -EINVAL); |
2117 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2118 | assert_return(field, -EINVAL); | |
2119 | assert_return(data, -EINVAL); | |
2120 | assert_return(size, -EINVAL); | |
2121 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2122 | |
2123 | f = j->current_file; | |
2124 | if (!f) | |
de190aef | 2125 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2126 | |
2127 | if (f->current_offset <= 0) | |
de190aef | 2128 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2129 | |
de190aef | 2130 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2131 | if (r < 0) |
2132 | return r; | |
2133 | ||
2134 | field_length = strlen(field); | |
2135 | ||
2136 | n = journal_file_entry_n_items(o); | |
2137 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2138 | uint64_t p, l; |
2139 | le64_t le_hash; | |
3fbf9cbb | 2140 | size_t t; |
1ec7120e | 2141 | int compression; |
3fbf9cbb LP |
2142 | |
2143 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 2144 | le_hash = o->entry.items[i].hash; |
de190aef | 2145 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
2146 | if (r < 0) |
2147 | return r; | |
2148 | ||
de190aef | 2149 | if (le_hash != o->data.hash) |
de7b95cd LP |
2150 | return -EBADMSG; |
2151 | ||
3fbf9cbb LP |
2152 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
2153 | ||
1ec7120e | 2154 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 | 2155 | if (compression) { |
349cc4a5 | 2156 | #if HAVE_XZ || HAVE_LZ4 |
2aaec9b4 | 2157 | r = decompress_startswith(compression, |
3b1a55e1 ZJS |
2158 | o->data.payload, l, |
2159 | &f->compress_buffer, &f->compress_buffer_size, | |
2aaec9b4 ZJS |
2160 | field, field_length, '='); |
2161 | if (r < 0) | |
82e24b00 | 2162 | log_debug_errno(r, "Cannot decompress %s object of length %"PRIu64" at offset "OFSfmt": %m", |
2aaec9b4 ZJS |
2163 | object_compressed_to_string(compression), l, p); |
2164 | else if (r > 0) { | |
3b1a55e1 | 2165 | |
fa1c4b51 | 2166 | size_t rsize; |
3b1a55e1 ZJS |
2167 | |
2168 | r = decompress_blob(compression, | |
2169 | o->data.payload, l, | |
2170 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
2171 | j->data_threshold); | |
2172 | if (r < 0) | |
2173 | return r; | |
807e17f0 | 2174 | |
3b1a55e1 ZJS |
2175 | *data = f->compress_buffer; |
2176 | *size = (size_t) rsize; | |
807e17f0 | 2177 | |
3b1a55e1 ZJS |
2178 | return 0; |
2179 | } | |
2180 | #else | |
2181 | return -EPROTONOSUPPORT; | |
2182 | #endif | |
807e17f0 LP |
2183 | } else if (l >= field_length+1 && |
2184 | memcmp(o->data.payload, field, field_length) == 0 && | |
2185 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2186 | |
161e54f8 | 2187 | t = (size_t) l; |
3fbf9cbb | 2188 | |
161e54f8 LP |
2189 | if ((uint64_t) t != l) |
2190 | return -E2BIG; | |
3fbf9cbb | 2191 | |
161e54f8 LP |
2192 | *data = o->data.payload; |
2193 | *size = t; | |
3fbf9cbb | 2194 | |
99613ec5 | 2195 | return 0; |
161e54f8 | 2196 | } |
3fbf9cbb | 2197 | |
de190aef | 2198 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2199 | if (r < 0) |
2200 | return r; | |
3fbf9cbb LP |
2201 | } |
2202 | ||
de190aef | 2203 | return -ENOENT; |
3fbf9cbb LP |
2204 | } |
2205 | ||
93b73b06 | 2206 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2207 | size_t t; |
2208 | uint64_t l; | |
3b1a55e1 | 2209 | int compression; |
3c1668da LP |
2210 | |
2211 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2212 | t = (size_t) l; | |
2213 | ||
2214 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2215 | if ((uint64_t) t != l) | |
2216 | return -E2BIG; | |
2217 | ||
1ec7120e ZJS |
2218 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2219 | if (compression) { | |
349cc4a5 | 2220 | #if HAVE_XZ || HAVE_LZ4 |
fa1c4b51 | 2221 | size_t rsize; |
3b1a55e1 | 2222 | int r; |
3c1668da | 2223 | |
1ec7120e ZJS |
2224 | r = decompress_blob(compression, |
2225 | o->data.payload, l, &f->compress_buffer, | |
2226 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2227 | if (r < 0) | |
2228 | return r; | |
3c1668da LP |
2229 | |
2230 | *data = f->compress_buffer; | |
2231 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2232 | #else |
2233 | return -EPROTONOSUPPORT; | |
2234 | #endif | |
3c1668da LP |
2235 | } else { |
2236 | *data = o->data.payload; | |
2237 | *size = t; | |
2238 | } | |
2239 | ||
2240 | return 0; | |
2241 | } | |
2242 | ||
a5344d2c | 2243 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2244 | JournalFile *f; |
3c1668da | 2245 | uint64_t p, n; |
4fd052ae | 2246 | le64_t le_hash; |
3fbf9cbb LP |
2247 | int r; |
2248 | Object *o; | |
2249 | ||
1ae464e0 TA |
2250 | assert_return(j, -EINVAL); |
2251 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2252 | assert_return(data, -EINVAL); | |
2253 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2254 | |
2255 | f = j->current_file; | |
2256 | if (!f) | |
de190aef | 2257 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2258 | |
2259 | if (f->current_offset <= 0) | |
de190aef | 2260 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2261 | |
de190aef | 2262 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2263 | if (r < 0) |
2264 | return r; | |
2265 | ||
2266 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2267 | if (j->current_field >= n) |
3fbf9cbb LP |
2268 | return 0; |
2269 | ||
7210bfb3 | 2270 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2271 | le_hash = o->entry.items[j->current_field].hash; |
2272 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2273 | if (r < 0) |
2274 | return r; | |
2275 | ||
de190aef | 2276 | if (le_hash != o->data.hash) |
de7b95cd LP |
2277 | return -EBADMSG; |
2278 | ||
93b73b06 | 2279 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2280 | if (r < 0) |
2281 | return r; | |
3fbf9cbb | 2282 | |
313cefa1 | 2283 | j->current_field++; |
3fbf9cbb LP |
2284 | |
2285 | return 1; | |
2286 | } | |
c2373f84 | 2287 | |
a5344d2c LP |
2288 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2289 | if (!j) | |
2290 | return; | |
8725d60a LP |
2291 | |
2292 | j->current_field = 0; | |
c2373f84 | 2293 | } |
50f20cfd | 2294 | |
a5344d2c | 2295 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2296 | int r; |
2297 | ||
1ae464e0 TA |
2298 | assert_return(j, -EINVAL); |
2299 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2300 | |
5d1ce257 LP |
2301 | if (j->no_inotify) |
2302 | return -EMEDIUMTYPE; | |
2303 | ||
a963990f LP |
2304 | if (j->inotify_fd >= 0) |
2305 | return j->inotify_fd; | |
2306 | ||
2307 | r = allocate_inotify(j); | |
2308 | if (r < 0) | |
2309 | return r; | |
2310 | ||
5d1ce257 LP |
2311 | log_debug("Reiterating files to get inotify watches established"); |
2312 | ||
a963990f LP |
2313 | /* Iterate through all dirs again, to add them to the |
2314 | * inotify */ | |
5302ebe1 ZJS |
2315 | if (j->no_new_files) |
2316 | r = add_current_paths(j); | |
e73529f9 EV |
2317 | else if (j->flags & SD_JOURNAL_OS_ROOT) |
2318 | r = add_search_paths(j); | |
5d1ce257 LP |
2319 | else if (j->toplevel_fd >= 0) |
2320 | r = add_root_directory(j, NULL, false); | |
5302ebe1 | 2321 | else if (j->path) |
d617408e | 2322 | r = add_root_directory(j, j->path, true); |
7827b1a1 | 2323 | else |
89739579 | 2324 | r = add_search_paths(j); |
a963990f LP |
2325 | if (r < 0) |
2326 | return r; | |
2327 | ||
50f20cfd LP |
2328 | return j->inotify_fd; |
2329 | } | |
2330 | ||
ee531d94 LP |
2331 | _public_ int sd_journal_get_events(sd_journal *j) { |
2332 | int fd; | |
2333 | ||
1ae464e0 TA |
2334 | assert_return(j, -EINVAL); |
2335 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2336 | |
2337 | fd = sd_journal_get_fd(j); | |
2338 | if (fd < 0) | |
2339 | return fd; | |
2340 | ||
2341 | return POLLIN; | |
2342 | } | |
2343 | ||
39c155ea LP |
2344 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2345 | int fd; | |
2346 | ||
1ae464e0 TA |
2347 | assert_return(j, -EINVAL); |
2348 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2349 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2350 | |
2351 | fd = sd_journal_get_fd(j); | |
2352 | if (fd < 0) | |
2353 | return fd; | |
2354 | ||
2355 | if (!j->on_network) { | |
2356 | *timeout_usec = (uint64_t) -1; | |
2357 | return 0; | |
2358 | } | |
2359 | ||
2360 | /* If we are on the network we need to regularly check for | |
2361 | * changes manually */ | |
2362 | ||
2363 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2364 | return 1; | |
2365 | } | |
2366 | ||
50f20cfd | 2367 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2368 | Directory *d; |
50f20cfd LP |
2369 | |
2370 | assert(j); | |
2371 | assert(e); | |
2372 | ||
2373 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2374 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2375 | if (d) { | |
2376 | sd_id128_t id; | |
50f20cfd | 2377 | |
de2c3907 LP |
2378 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2379 | (endswith(e->name, ".journal") || | |
2380 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2381 | |
2382 | /* Event for a journal file */ | |
2383 | ||
d617408e LP |
2384 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2385 | (void) add_file(j, d->path, e->name); | |
2386 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) | |
2387 | remove_file(j, d->path, e->name); | |
50f20cfd | 2388 | |
a963990f | 2389 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2390 | |
a963990f | 2391 | /* Event for a subdirectory */ |
50f20cfd | 2392 | |
b2b46f91 TA |
2393 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2394 | remove_directory(j, d); | |
50f20cfd | 2395 | |
a963990f | 2396 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2397 | |
a963990f | 2398 | /* Event for root directory */ |
50f20cfd | 2399 | |
d617408e LP |
2400 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2401 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2402 | } |
2403 | ||
2404 | return; | |
2405 | } | |
2406 | ||
2407 | if (e->mask & IN_IGNORED) | |
2408 | return; | |
2409 | ||
d617408e | 2410 | log_debug("Unknown inotify event."); |
50f20cfd LP |
2411 | } |
2412 | ||
a963990f LP |
2413 | static int determine_change(sd_journal *j) { |
2414 | bool b; | |
2415 | ||
2416 | assert(j); | |
2417 | ||
2418 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2419 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2420 | ||
2421 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2422 | } | |
2423 | ||
a5344d2c | 2424 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2425 | bool got_something = false; |
50f20cfd | 2426 | |
1ae464e0 TA |
2427 | assert_return(j, -EINVAL); |
2428 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2429 | |
39c155ea | 2430 | j->last_process_usec = now(CLOCK_MONOTONIC); |
f9346444 | 2431 | j->last_invalidate_counter = j->current_invalidate_counter; |
39c155ea | 2432 | |
50f20cfd | 2433 | for (;;) { |
0254e944 | 2434 | union inotify_event_buffer buffer; |
50f20cfd LP |
2435 | struct inotify_event *e; |
2436 | ssize_t l; | |
2437 | ||
0254e944 | 2438 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2439 | if (l < 0) { |
3742095b | 2440 | if (IN_SET(errno, EAGAIN, EINTR)) |
a963990f | 2441 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; |
50f20cfd LP |
2442 | |
2443 | return -errno; | |
2444 | } | |
2445 | ||
a963990f LP |
2446 | got_something = true; |
2447 | ||
f7c1ad4f | 2448 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2449 | process_inotify_event(j, e); |
50f20cfd LP |
2450 | } |
2451 | } | |
6ad1d1c3 | 2452 | |
e02d1cf7 | 2453 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2454 | int r; |
39c155ea | 2455 | uint64_t t; |
e02d1cf7 | 2456 | |
1ae464e0 TA |
2457 | assert_return(j, -EINVAL); |
2458 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2459 | |
a963990f LP |
2460 | if (j->inotify_fd < 0) { |
2461 | ||
2462 | /* This is the first invocation, hence create the | |
2463 | * inotify watch */ | |
2464 | r = sd_journal_get_fd(j); | |
2465 | if (r < 0) | |
2466 | return r; | |
2467 | ||
2468 | /* The journal might have changed since the context | |
2469 | * object was created and we weren't watching before, | |
2470 | * hence don't wait for anything, and return | |
2471 | * immediately. */ | |
2472 | return determine_change(j); | |
2473 | } | |
2474 | ||
39c155ea LP |
2475 | r = sd_journal_get_timeout(j, &t); |
2476 | if (r < 0) | |
2477 | return r; | |
2478 | ||
2479 | if (t != (uint64_t) -1) { | |
2480 | usec_t n; | |
2481 | ||
2482 | n = now(CLOCK_MONOTONIC); | |
2483 | t = t > n ? t - n : 0; | |
85210bff | 2484 | |
39c155ea LP |
2485 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2486 | timeout_usec = t; | |
85210bff LP |
2487 | } |
2488 | ||
a963990f LP |
2489 | do { |
2490 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2491 | } while (r == -EINTR); | |
e02d1cf7 LP |
2492 | |
2493 | if (r < 0) | |
2494 | return r; | |
2495 | ||
a963990f | 2496 | return sd_journal_process(j); |
e02d1cf7 LP |
2497 | } |
2498 | ||
08984293 LP |
2499 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2500 | Iterator i; | |
2501 | JournalFile *f; | |
2502 | bool first = true; | |
581483bf | 2503 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2504 | int r; |
2505 | ||
1ae464e0 TA |
2506 | assert_return(j, -EINVAL); |
2507 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2508 | assert_return(from || to, -EINVAL); | |
2509 | assert_return(from != to, -EINVAL); | |
08984293 | 2510 | |
c1f906bd | 2511 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2512 | usec_t fr, t; |
2513 | ||
2514 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2515 | if (r == -ENOENT) |
2516 | continue; | |
08984293 LP |
2517 | if (r < 0) |
2518 | return r; | |
2519 | if (r == 0) | |
2520 | continue; | |
2521 | ||
2522 | if (first) { | |
581483bf LP |
2523 | fmin = fr; |
2524 | tmax = t; | |
08984293 LP |
2525 | first = false; |
2526 | } else { | |
581483bf LP |
2527 | fmin = MIN(fr, fmin); |
2528 | tmax = MAX(t, tmax); | |
08984293 LP |
2529 | } |
2530 | } | |
2531 | ||
581483bf LP |
2532 | if (from) |
2533 | *from = fmin; | |
2534 | if (to) | |
2535 | *to = tmax; | |
2536 | ||
08984293 LP |
2537 | return first ? 0 : 1; |
2538 | } | |
2539 | ||
2540 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2541 | Iterator i; | |
2542 | JournalFile *f; | |
1651e2c6 | 2543 | bool found = false; |
08984293 LP |
2544 | int r; |
2545 | ||
1ae464e0 TA |
2546 | assert_return(j, -EINVAL); |
2547 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2548 | assert_return(from || to, -EINVAL); | |
2549 | assert_return(from != to, -EINVAL); | |
08984293 | 2550 | |
c1f906bd | 2551 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2552 | usec_t fr, t; |
2553 | ||
2554 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2555 | if (r == -ENOENT) |
2556 | continue; | |
08984293 LP |
2557 | if (r < 0) |
2558 | return r; | |
2559 | if (r == 0) | |
2560 | continue; | |
2561 | ||
1651e2c6 | 2562 | if (found) { |
08984293 | 2563 | if (from) |
1651e2c6 | 2564 | *from = MIN(fr, *from); |
08984293 | 2565 | if (to) |
1651e2c6 | 2566 | *to = MAX(t, *to); |
08984293 LP |
2567 | } else { |
2568 | if (from) | |
1651e2c6 | 2569 | *from = fr; |
08984293 | 2570 | if (to) |
1651e2c6 ZJS |
2571 | *to = t; |
2572 | found = true; | |
08984293 LP |
2573 | } |
2574 | } | |
2575 | ||
1651e2c6 | 2576 | return found; |
08984293 LP |
2577 | } |
2578 | ||
dca6219e LP |
2579 | void journal_print_header(sd_journal *j) { |
2580 | Iterator i; | |
2581 | JournalFile *f; | |
2582 | bool newline = false; | |
2583 | ||
2584 | assert(j); | |
2585 | ||
c1f906bd | 2586 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2587 | if (newline) |
2588 | putchar('\n'); | |
2589 | else | |
2590 | newline = true; | |
2591 | ||
2592 | journal_file_print_header(f); | |
2593 | } | |
2594 | } | |
08984293 | 2595 | |
a1a03e30 LP |
2596 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2597 | Iterator i; | |
2598 | JournalFile *f; | |
2599 | uint64_t sum = 0; | |
2600 | ||
1ae464e0 TA |
2601 | assert_return(j, -EINVAL); |
2602 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2603 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2604 | |
c1f906bd | 2605 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2606 | struct stat st; |
2607 | ||
2608 | if (fstat(f->fd, &st) < 0) | |
2609 | return -errno; | |
2610 | ||
2611 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2612 | } | |
2613 | ||
2614 | *bytes = sum; | |
2615 | return 0; | |
2616 | } | |
2617 | ||
3c1668da LP |
2618 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2619 | char *f; | |
2620 | ||
1ae464e0 TA |
2621 | assert_return(j, -EINVAL); |
2622 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2623 | assert_return(!isempty(field), -EINVAL); | |
2624 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2625 | |
2626 | f = strdup(field); | |
2627 | if (!f) | |
2628 | return -ENOMEM; | |
2629 | ||
2630 | free(j->unique_field); | |
2631 | j->unique_field = f; | |
2632 | j->unique_file = NULL; | |
2633 | j->unique_offset = 0; | |
360af4cf | 2634 | j->unique_file_lost = false; |
3c1668da LP |
2635 | |
2636 | return 0; | |
2637 | } | |
2638 | ||
2639 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2640 | size_t k; |
19a2bd80 | 2641 | |
1ae464e0 TA |
2642 | assert_return(j, -EINVAL); |
2643 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2644 | assert_return(data, -EINVAL); | |
2645 | assert_return(l, -EINVAL); | |
2646 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2647 | |
3c1668da | 2648 | k = strlen(j->unique_field); |
19a2bd80 | 2649 | |
3c1668da | 2650 | if (!j->unique_file) { |
360af4cf ZJS |
2651 | if (j->unique_file_lost) |
2652 | return 0; | |
2653 | ||
c1f906bd | 2654 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2655 | if (!j->unique_file) |
2656 | return 0; | |
360af4cf | 2657 | |
3c1668da LP |
2658 | j->unique_offset = 0; |
2659 | } | |
19a2bd80 | 2660 | |
3c1668da LP |
2661 | for (;;) { |
2662 | JournalFile *of; | |
2663 | Iterator i; | |
ae97089d | 2664 | Object *o; |
3c1668da LP |
2665 | const void *odata; |
2666 | size_t ol; | |
2667 | bool found; | |
ae97089d | 2668 | int r; |
3c1668da | 2669 | |
bdc02927 | 2670 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2671 | if (j->unique_offset == 0) { |
2672 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2673 | if (r < 0) | |
2674 | return r; | |
2675 | ||
2676 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2677 | } else { | |
2678 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2679 | if (r < 0) | |
2680 | return r; | |
2681 | ||
2682 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2683 | } | |
2684 | ||
2685 | /* We reached the end of the list? Then start again, with the next file */ | |
2686 | if (j->unique_offset == 0) { | |
c1f906bd | 2687 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2688 | if (!j->unique_file) |
3c1668da LP |
2689 | return 0; |
2690 | ||
3c1668da LP |
2691 | continue; |
2692 | } | |
2693 | ||
d05089d8 MS |
2694 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2695 | * instead, so that we can look at this data object at the same | |
3c1668da | 2696 | * time as one on another file */ |
d05089d8 | 2697 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2698 | if (r < 0) |
2699 | return r; | |
2700 | ||
2701 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2702 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2703 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2704 | j->unique_file->path, j->unique_offset, |
2705 | o->object.type, OBJECT_DATA); | |
3c1668da | 2706 | return -EBADMSG; |
ae97089d ZJS |
2707 | } |
2708 | ||
93b73b06 | 2709 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2710 | if (r < 0) |
2711 | return r; | |
2712 | ||
0f99f74a ZJS |
2713 | /* Check if we have at least the field name and "=". */ |
2714 | if (ol <= k) { | |
2715 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2716 | j->unique_file->path, j->unique_offset, | |
2717 | ol, k + 1); | |
2718 | return -EBADMSG; | |
2719 | } | |
2720 | ||
2721 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2722 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2723 | j->unique_file->path, j->unique_offset, | |
2724 | j->unique_field); | |
2725 | return -EBADMSG; | |
2726 | } | |
2727 | ||
3c1668da LP |
2728 | /* OK, now let's see if we already returned this data |
2729 | * object by checking if it exists in the earlier | |
2730 | * traversed files. */ | |
2731 | found = false; | |
c1f906bd | 2732 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2733 | if (of == j->unique_file) |
2734 | break; | |
2735 | ||
ed71f956 LP |
2736 | /* Skip this file it didn't have any fields indexed */ |
2737 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2738 | continue; |
2739 | ||
ed71f956 | 2740 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); |
3c1668da LP |
2741 | if (r < 0) |
2742 | return r; | |
ed71f956 | 2743 | if (r > 0) { |
3c1668da | 2744 | found = true; |
ed71f956 LP |
2745 | break; |
2746 | } | |
3c1668da LP |
2747 | } |
2748 | ||
06cc69d4 JJ |
2749 | if (found) |
2750 | continue; | |
2751 | ||
93b73b06 | 2752 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2753 | if (r < 0) |
2754 | return r; | |
2755 | ||
2756 | return 1; | |
2757 | } | |
2758 | } | |
2759 | ||
115646c7 | 2760 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2761 | if (!j) |
2762 | return; | |
2763 | ||
2764 | j->unique_file = NULL; | |
2765 | j->unique_offset = 0; | |
360af4cf | 2766 | j->unique_file_lost = false; |
3c1668da | 2767 | } |
85210bff | 2768 | |
eb86030e LP |
2769 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
2770 | int r; | |
2771 | ||
2772 | assert_return(j, -EINVAL); | |
2773 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2774 | assert_return(field, -EINVAL); | |
2775 | ||
2776 | if (!j->fields_file) { | |
2777 | if (j->fields_file_lost) | |
2778 | return 0; | |
2779 | ||
2780 | j->fields_file = ordered_hashmap_first(j->files); | |
2781 | if (!j->fields_file) | |
2782 | return 0; | |
2783 | ||
2784 | j->fields_hash_table_index = 0; | |
2785 | j->fields_offset = 0; | |
2786 | } | |
2787 | ||
2788 | for (;;) { | |
2789 | JournalFile *f, *of; | |
2790 | Iterator i; | |
2791 | uint64_t m; | |
2792 | Object *o; | |
2793 | size_t sz; | |
2794 | bool found; | |
2795 | ||
2796 | f = j->fields_file; | |
2797 | ||
2798 | if (j->fields_offset == 0) { | |
2799 | bool eof = false; | |
2800 | ||
2801 | /* We are not yet positioned at any field. Let's pick the first one */ | |
2802 | r = journal_file_map_field_hash_table(f); | |
2803 | if (r < 0) | |
2804 | return r; | |
2805 | ||
2806 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
2807 | for (;;) { | |
2808 | if (j->fields_hash_table_index >= m) { | |
2809 | /* Reached the end of the hash table, go to the next file. */ | |
2810 | eof = true; | |
2811 | break; | |
2812 | } | |
2813 | ||
2814 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
2815 | ||
2816 | if (j->fields_offset != 0) | |
2817 | break; | |
2818 | ||
2819 | /* Empty hash table bucket, go to next one */ | |
2820 | j->fields_hash_table_index++; | |
2821 | } | |
2822 | ||
2823 | if (eof) { | |
2824 | /* Proceed with next file */ | |
2825 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
2826 | if (!j->fields_file) { | |
2827 | *field = NULL; | |
2828 | return 0; | |
2829 | } | |
2830 | ||
2831 | j->fields_offset = 0; | |
2832 | j->fields_hash_table_index = 0; | |
2833 | continue; | |
2834 | } | |
2835 | ||
2836 | } else { | |
2837 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
2838 | ||
2839 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
2840 | if (r < 0) | |
2841 | return r; | |
2842 | ||
2843 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
2844 | if (j->fields_offset == 0) { | |
2845 | /* Reached the end of the hash table chain */ | |
2846 | j->fields_hash_table_index++; | |
2847 | continue; | |
2848 | } | |
2849 | } | |
2850 | ||
1f133e0d | 2851 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
2852 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
2853 | if (r < 0) | |
2854 | return r; | |
2855 | ||
2856 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
2857 | if (o->object.type != OBJECT_FIELD) { | |
2858 | log_debug("%s:offset " OFSfmt ": object has type %i, expected %i", f->path, j->fields_offset, o->object.type, OBJECT_FIELD); | |
2859 | return -EBADMSG; | |
2860 | } | |
2861 | ||
2862 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
2863 | ||
2864 | /* Let's see if we already returned this field name before. */ | |
2865 | found = false; | |
2866 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { | |
2867 | if (of == f) | |
2868 | break; | |
2869 | ||
2870 | /* Skip this file it didn't have any fields indexed */ | |
2871 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
2872 | continue; | |
2873 | ||
2874 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, le64toh(o->field.hash), NULL, NULL); | |
2875 | if (r < 0) | |
2876 | return r; | |
2877 | if (r > 0) { | |
2878 | found = true; | |
2879 | break; | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | if (found) | |
2884 | continue; | |
2885 | ||
2886 | /* Check if this is really a valid string containing no NUL byte */ | |
2887 | if (memchr(o->field.payload, 0, sz)) | |
2888 | return -EBADMSG; | |
2889 | ||
2890 | if (sz > j->data_threshold) | |
2891 | sz = j->data_threshold; | |
2892 | ||
2893 | if (!GREEDY_REALLOC(j->fields_buffer, j->fields_buffer_allocated, sz + 1)) | |
2894 | return -ENOMEM; | |
2895 | ||
2896 | memcpy(j->fields_buffer, o->field.payload, sz); | |
2897 | j->fields_buffer[sz] = 0; | |
2898 | ||
2899 | if (!field_is_valid(j->fields_buffer)) | |
2900 | return -EBADMSG; | |
2901 | ||
2902 | *field = j->fields_buffer; | |
2903 | return 1; | |
2904 | } | |
2905 | } | |
2906 | ||
2907 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
2908 | if (!j) | |
2909 | return; | |
2910 | ||
2911 | j->fields_file = NULL; | |
2912 | j->fields_hash_table_index = 0; | |
2913 | j->fields_offset = 0; | |
2914 | j->fields_file_lost = false; | |
2915 | } | |
2916 | ||
85210bff | 2917 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
2918 | assert_return(j, -EINVAL); |
2919 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2920 | |
2921 | return !j->on_network; | |
2922 | } | |
d4205751 LP |
2923 | |
2924 | static char *lookup_field(const char *field, void *userdata) { | |
2925 | sd_journal *j = userdata; | |
2926 | const void *data; | |
2927 | size_t size, d; | |
2928 | int r; | |
2929 | ||
2930 | assert(field); | |
2931 | assert(j); | |
2932 | ||
2933 | r = sd_journal_get_data(j, field, &data, &size); | |
2934 | if (r < 0 || | |
2935 | size > REPLACE_VAR_MAX) | |
2936 | return strdup(field); | |
2937 | ||
2938 | d = strlen(field) + 1; | |
2939 | ||
2940 | return strndup((const char*) data + d, size - d); | |
2941 | } | |
2942 | ||
2943 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2944 | const void *data; | |
2945 | size_t size; | |
2946 | sd_id128_t id; | |
2947 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2948 | char *t; | |
2949 | int r; | |
2950 | ||
1ae464e0 TA |
2951 | assert_return(j, -EINVAL); |
2952 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2953 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2954 | |
2955 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2956 | if (r < 0) | |
2957 | return r; | |
2958 | ||
2959 | cid = strndup((const char*) data + 11, size - 11); | |
2960 | if (!cid) | |
2961 | return -ENOMEM; | |
2962 | ||
2963 | r = sd_id128_from_string(cid, &id); | |
2964 | if (r < 0) | |
2965 | return r; | |
2966 | ||
844ec79b | 2967 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2968 | if (r < 0) |
2969 | return r; | |
2970 | ||
2971 | t = replace_var(text, lookup_field, j); | |
2972 | if (!t) | |
2973 | return -ENOMEM; | |
2974 | ||
2975 | *ret = t; | |
2976 | return 0; | |
2977 | } | |
8f1e860f LP |
2978 | |
2979 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2980 | assert_return(ret, -EINVAL); |
8f1e860f | 2981 | |
844ec79b | 2982 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2983 | } |
93b73b06 LP |
2984 | |
2985 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2986 | assert_return(j, -EINVAL); |
2987 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2988 | |
2989 | j->data_threshold = sz; | |
2990 | return 0; | |
2991 | } | |
2992 | ||
2993 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2994 | assert_return(j, -EINVAL); |
2995 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2996 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2997 | |
2998 | *sz = j->data_threshold; | |
2999 | return 0; | |
3000 | } | |
39fd5b08 JS |
3001 | |
3002 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
3003 | assert_return(j, -EINVAL); | |
3004 | ||
3005 | return j->has_runtime_files; | |
3006 | } | |
3007 | ||
3008 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
3009 | assert_return(j, -EINVAL); | |
3010 | ||
3011 | return j->has_persistent_files; | |
3012 | } |