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Commit | Line | Data |
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87d2c1ff LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2011 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
87d2c1ff LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
87d2c1ff | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
87d2c1ff | 20 | #include <errno.h> |
87d2c1ff | 21 | #include <fcntl.h> |
07630cea LP |
22 | #include <linux/magic.h> |
23 | #include <poll.h> | |
3fbf9cbb | 24 | #include <stddef.h> |
50f20cfd | 25 | #include <sys/inotify.h> |
85210bff | 26 | #include <sys/vfs.h> |
07630cea | 27 | #include <unistd.h> |
87d2c1ff LP |
28 | |
29 | #include "sd-journal.h" | |
c004493c | 30 | |
b5efdb8a | 31 | #include "alloc-util.h" |
07630cea LP |
32 | #include "catalog.h" |
33 | #include "compress.h" | |
a0956174 | 34 | #include "dirent-util.h" |
3ffd4af2 | 35 | #include "fd-util.h" |
07630cea LP |
36 | #include "fileio.h" |
37 | #include "formats-util.h" | |
77601719 | 38 | #include "fs-util.h" |
07630cea LP |
39 | #include "hashmap.h" |
40 | #include "hostname-util.h" | |
c004493c | 41 | #include "io-util.h" |
87d2c1ff | 42 | #include "journal-def.h" |
cec736d2 | 43 | #include "journal-file.h" |
07630cea | 44 | #include "journal-internal.h" |
cec736d2 | 45 | #include "list.h" |
de7b95cd | 46 | #include "lookup3.h" |
85210bff | 47 | #include "missing.h" |
07630cea | 48 | #include "path-util.h" |
d4205751 | 49 | #include "replace-var.h" |
15a5e950 LP |
50 | #include "stat-util.h" |
51 | #include "stdio-util.h" | |
07630cea LP |
52 | #include "string-util.h" |
53 | #include "strv.h" | |
87d2c1ff | 54 | |
9e8abdf0 LP |
55 | #define JOURNAL_FILES_MAX 7168 |
56 | ||
85210bff LP |
57 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
58 | ||
d4205751 LP |
59 | #define REPLACE_VAR_MAX 256 |
60 | ||
93b73b06 LP |
61 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
62 | ||
a9a245c1 ZJS |
63 | static void remove_file_real(sd_journal *j, JournalFile *f); |
64 | ||
a65f06bb ZJS |
65 | static bool journal_pid_changed(sd_journal *j) { |
66 | assert(j); | |
67 | ||
68 | /* We don't support people creating a journal object and | |
69 | * keeping it around over a fork(). Let's complain. */ | |
70 | ||
71 | return j->original_pid != getpid(); | |
72 | } | |
73 | ||
5768d259 LP |
74 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
75 | char *copy; | |
3ac251b8 LP |
76 | int k; |
77 | ||
5768d259 LP |
78 | /* Memorize an error we encountered, and store which |
79 | * file/directory it was generated from. Note that we store | |
80 | * only *one* path per error code, as the error code is the | |
81 | * key into the hashmap, and the path is the value. This means | |
82 | * we keep track only of all error kinds, but not of all error | |
83 | * locations. This has the benefit that the hashmap cannot | |
84 | * grow beyond bounds. | |
85 | * | |
86 | * We return an error here only if we didn't manage to | |
87 | * memorize the real error. */ | |
88 | ||
6fe391c5 ZJS |
89 | if (r >= 0) |
90 | return r; | |
91 | ||
5768d259 | 92 | k = hashmap_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
93 | if (k < 0) |
94 | return k; | |
95 | ||
5768d259 LP |
96 | if (path) { |
97 | copy = strdup(path); | |
98 | if (!copy) | |
99 | return -ENOMEM; | |
100 | } else | |
101 | copy = NULL; | |
102 | ||
103 | k = hashmap_put(j->errors, INT_TO_PTR(r), copy); | |
104 | if (k < 0) { | |
105 | free(copy); | |
106 | ||
107 | if (k == -EEXIST) | |
108 | return 0; | |
109 | ||
110 | return k; | |
111 | } | |
112 | ||
113 | return 0; | |
6fe391c5 ZJS |
114 | } |
115 | ||
de190aef | 116 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
117 | Iterator i; |
118 | JournalFile *f; | |
119 | ||
120 | assert(j); | |
121 | ||
122 | j->current_file = NULL; | |
123 | j->current_field = 0; | |
124 | ||
c1f906bd | 125 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 126 | journal_file_reset_location(f); |
8f9b6cd9 LP |
127 | } |
128 | ||
de190aef LP |
129 | static void reset_location(sd_journal *j) { |
130 | assert(j); | |
131 | ||
132 | detach_location(j); | |
133 | zero(j->current_location); | |
134 | } | |
135 | ||
a87247dd | 136 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 137 | assert(l); |
a87247dd | 138 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
139 | assert(f); |
140 | assert(o->object.type == OBJECT_ENTRY); | |
141 | ||
a87247dd | 142 | l->type = type; |
de190aef LP |
143 | l->seqnum = le64toh(o->entry.seqnum); |
144 | l->seqnum_id = f->header->seqnum_id; | |
145 | l->realtime = le64toh(o->entry.realtime); | |
146 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 147 | l->boot_id = o->entry.boot_id; |
de190aef LP |
148 | l->xor_hash = le64toh(o->entry.xor_hash); |
149 | ||
150 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
151 | } | |
152 | ||
1eb6332d | 153 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
154 | assert(j); |
155 | assert(f); | |
156 | assert(o); | |
157 | ||
1eb6332d | 158 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
159 | |
160 | j->current_file = f; | |
161 | j->current_field = 0; | |
162 | ||
6573ef05 MS |
163 | /* Let f know its candidate entry was picked. */ |
164 | assert(f->location_type == LOCATION_SEEK); | |
165 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
166 | } |
167 | ||
cbdca852 LP |
168 | static int match_is_valid(const void *data, size_t size) { |
169 | const char *b, *p; | |
170 | ||
171 | assert(data); | |
172 | ||
173 | if (size < 2) | |
174 | return false; | |
175 | ||
176 | if (startswith(data, "__")) | |
177 | return false; | |
178 | ||
179 | b = data; | |
180 | for (p = b; p < b + size; p++) { | |
181 | ||
182 | if (*p == '=') | |
183 | return p > b; | |
184 | ||
185 | if (*p == '_') | |
186 | continue; | |
187 | ||
188 | if (*p >= 'A' && *p <= 'Z') | |
189 | continue; | |
190 | ||
191 | if (*p >= '0' && *p <= '9') | |
192 | continue; | |
193 | ||
194 | return false; | |
195 | } | |
196 | ||
197 | return false; | |
198 | } | |
199 | ||
200 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
201 | const uint8_t *a = _a, *b = _b; |
202 | size_t j; | |
de190aef LP |
203 | |
204 | for (j = 0; j < s && j < t; j++) { | |
205 | ||
de190aef | 206 | if (a[j] != b[j]) |
cbdca852 | 207 | return false; |
de190aef | 208 | |
cbdca852 LP |
209 | if (a[j] == '=') |
210 | return true; | |
de190aef LP |
211 | } |
212 | ||
bc302926 | 213 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
214 | } |
215 | ||
216 | static Match *match_new(Match *p, MatchType t) { | |
217 | Match *m; | |
218 | ||
219 | m = new0(Match, 1); | |
220 | if (!m) | |
221 | return NULL; | |
222 | ||
223 | m->type = t; | |
224 | ||
225 | if (p) { | |
226 | m->parent = p; | |
71fda00f | 227 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
228 | } |
229 | ||
230 | return m; | |
231 | } | |
232 | ||
233 | static void match_free(Match *m) { | |
234 | assert(m); | |
235 | ||
236 | while (m->matches) | |
237 | match_free(m->matches); | |
238 | ||
239 | if (m->parent) | |
71fda00f | 240 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
241 | |
242 | free(m->data); | |
243 | free(m); | |
244 | } | |
245 | ||
246 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 247 | if (!m || m->matches) |
cbdca852 LP |
248 | return; |
249 | ||
250 | match_free(m); | |
de190aef LP |
251 | } |
252 | ||
a5344d2c | 253 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 254 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 255 | le64_t le_hash; |
87d2c1ff | 256 | |
1ae464e0 TA |
257 | assert_return(j, -EINVAL); |
258 | assert_return(!journal_pid_changed(j), -ECHILD); | |
259 | assert_return(data, -EINVAL); | |
cbdca852 LP |
260 | |
261 | if (size == 0) | |
262 | size = strlen(data); | |
263 | ||
1ae464e0 | 264 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 265 | |
cd34b3c6 HH |
266 | /* level 0: AND term |
267 | * level 1: OR terms | |
268 | * level 2: AND terms | |
269 | * level 3: OR terms | |
270 | * level 4: concrete matches */ | |
cbdca852 LP |
271 | |
272 | if (!j->level0) { | |
cd34b3c6 | 273 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
274 | if (!j->level0) |
275 | return -ENOMEM; | |
276 | } | |
277 | ||
278 | if (!j->level1) { | |
cd34b3c6 | 279 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
280 | if (!j->level1) |
281 | return -ENOMEM; | |
282 | } | |
283 | ||
cd34b3c6 HH |
284 | if (!j->level2) { |
285 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
286 | if (!j->level2) | |
287 | return -ENOMEM; | |
288 | } | |
289 | ||
290 | assert(j->level0->type == MATCH_AND_TERM); | |
291 | assert(j->level1->type == MATCH_OR_TERM); | |
292 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 293 | |
de190aef LP |
294 | le_hash = htole64(hash64(data, size)); |
295 | ||
cd34b3c6 HH |
296 | LIST_FOREACH(matches, l3, j->level2->matches) { |
297 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 298 | |
cd34b3c6 HH |
299 | LIST_FOREACH(matches, l4, l3->matches) { |
300 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 301 | |
cbdca852 LP |
302 | /* Exactly the same match already? Then ignore |
303 | * this addition */ | |
cd34b3c6 HH |
304 | if (l4->le_hash == le_hash && |
305 | l4->size == size && | |
306 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
307 | return 0; |
308 | ||
309 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
310 | if (same_field(data, size, l4->data, l4->size)) { |
311 | add_here = l3; | |
cbdca852 LP |
312 | break; |
313 | } | |
314 | } | |
315 | ||
316 | if (add_here) | |
317 | break; | |
de190aef LP |
318 | } |
319 | ||
cbdca852 | 320 | if (!add_here) { |
cd34b3c6 | 321 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
322 | if (!add_here) |
323 | goto fail; | |
324 | } | |
325 | ||
326 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 327 | if (!m) |
cbdca852 | 328 | goto fail; |
87d2c1ff | 329 | |
cbdca852 | 330 | m->le_hash = le_hash; |
1cc101f1 | 331 | m->size = size; |
cbdca852 LP |
332 | m->data = memdup(data, size); |
333 | if (!m->data) | |
334 | goto fail; | |
335 | ||
336 | detach_location(j); | |
337 | ||
338 | return 0; | |
339 | ||
340 | fail: | |
c5a10d9c ZJS |
341 | match_free_if_empty(add_here); |
342 | match_free_if_empty(j->level2); | |
343 | match_free_if_empty(j->level1); | |
344 | match_free_if_empty(j->level0); | |
cbdca852 LP |
345 | |
346 | return -ENOMEM; | |
347 | } | |
348 | ||
cd34b3c6 | 349 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
350 | assert_return(j, -EINVAL); |
351 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 352 | |
cbdca852 LP |
353 | if (!j->level0) |
354 | return 0; | |
355 | ||
356 | if (!j->level1) | |
357 | return 0; | |
358 | ||
359 | if (!j->level1->matches) | |
360 | return 0; | |
361 | ||
cd34b3c6 HH |
362 | j->level1 = NULL; |
363 | j->level2 = NULL; | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
368 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
369 | assert_return(j, -EINVAL); |
370 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
371 | |
372 | if (!j->level0) | |
373 | return 0; | |
374 | ||
375 | if (!j->level1) | |
376 | return 0; | |
377 | ||
378 | if (!j->level2) | |
379 | return 0; | |
380 | ||
381 | if (!j->level2->matches) | |
382 | return 0; | |
cbdca852 | 383 | |
cd34b3c6 | 384 | j->level2 = NULL; |
cbdca852 LP |
385 | return 0; |
386 | } | |
387 | ||
388 | static char *match_make_string(Match *m) { | |
389 | char *p, *r; | |
390 | Match *i; | |
391 | bool enclose = false; | |
392 | ||
393 | if (!m) | |
4ad16808 | 394 | return strdup("none"); |
cbdca852 LP |
395 | |
396 | if (m->type == MATCH_DISCRETE) | |
397 | return strndup(m->data, m->size); | |
398 | ||
399 | p = NULL; | |
400 | LIST_FOREACH(matches, i, m->matches) { | |
401 | char *t, *k; | |
402 | ||
403 | t = match_make_string(i); | |
404 | if (!t) { | |
405 | free(p); | |
406 | return NULL; | |
407 | } | |
408 | ||
409 | if (p) { | |
b7def684 | 410 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
411 | free(p); |
412 | free(t); | |
413 | ||
414 | if (!k) | |
415 | return NULL; | |
416 | ||
417 | p = k; | |
418 | ||
419 | enclose = true; | |
bc302926 | 420 | } else |
cbdca852 | 421 | p = t; |
87d2c1ff LP |
422 | } |
423 | ||
cbdca852 | 424 | if (enclose) { |
b7def684 | 425 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
426 | free(p); |
427 | return r; | |
428 | } | |
87d2c1ff | 429 | |
cbdca852 LP |
430 | return p; |
431 | } | |
de7b95cd | 432 | |
cbdca852 LP |
433 | char *journal_make_match_string(sd_journal *j) { |
434 | assert(j); | |
8f9b6cd9 | 435 | |
cbdca852 | 436 | return match_make_string(j->level0); |
87d2c1ff LP |
437 | } |
438 | ||
a5344d2c LP |
439 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
440 | if (!j) | |
441 | return; | |
87d2c1ff | 442 | |
cbdca852 LP |
443 | if (j->level0) |
444 | match_free(j->level0); | |
de7b95cd | 445 | |
cd34b3c6 | 446 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 447 | |
de190aef | 448 | detach_location(j); |
87d2c1ff LP |
449 | } |
450 | ||
487d3720 MS |
451 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
452 | assert(f); | |
de190aef | 453 | assert(l); |
487d3720 | 454 | assert(f->location_type == LOCATION_SEEK); |
a87247dd | 455 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
456 | |
457 | if (l->monotonic_set && | |
487d3720 | 458 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 459 | l->realtime_set && |
487d3720 | 460 | f->current_realtime == l->realtime && |
de190aef | 461 | l->xor_hash_set && |
487d3720 | 462 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
463 | return 0; |
464 | ||
465 | if (l->seqnum_set && | |
487d3720 | 466 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 467 | |
487d3720 | 468 | if (f->current_seqnum < l->seqnum) |
de190aef | 469 | return -1; |
487d3720 | 470 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
471 | return 1; |
472 | } | |
473 | ||
474 | if (l->monotonic_set && | |
487d3720 | 475 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 476 | |
487d3720 | 477 | if (f->current_monotonic < l->monotonic) |
de190aef | 478 | return -1; |
487d3720 | 479 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
480 | return 1; |
481 | } | |
482 | ||
483 | if (l->realtime_set) { | |
484 | ||
487d3720 | 485 | if (f->current_realtime < l->realtime) |
de190aef | 486 | return -1; |
487d3720 | 487 | if (f->current_realtime > l->realtime) |
de190aef LP |
488 | return 1; |
489 | } | |
490 | ||
491 | if (l->xor_hash_set) { | |
de190aef | 492 | |
487d3720 | 493 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 494 | return -1; |
487d3720 | 495 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
496 | return 1; |
497 | } | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
cbdca852 LP |
502 | static int next_for_match( |
503 | sd_journal *j, | |
504 | Match *m, | |
505 | JournalFile *f, | |
506 | uint64_t after_offset, | |
507 | direction_t direction, | |
508 | Object **ret, | |
509 | uint64_t *offset) { | |
510 | ||
de7b95cd | 511 | int r; |
cbdca852 LP |
512 | uint64_t np = 0; |
513 | Object *n; | |
de7b95cd LP |
514 | |
515 | assert(j); | |
cbdca852 LP |
516 | assert(m); |
517 | assert(f); | |
de7b95cd | 518 | |
cbdca852 LP |
519 | if (m->type == MATCH_DISCRETE) { |
520 | uint64_t dp; | |
de190aef | 521 | |
cbdca852 | 522 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
523 | if (r <= 0) |
524 | return r; | |
525 | ||
cbdca852 | 526 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 527 | |
cbdca852 LP |
528 | } else if (m->type == MATCH_OR_TERM) { |
529 | Match *i; | |
de7b95cd | 530 | |
cbdca852 | 531 | /* Find the earliest match beyond after_offset */ |
de190aef | 532 | |
cbdca852 LP |
533 | LIST_FOREACH(matches, i, m->matches) { |
534 | uint64_t cp; | |
de190aef | 535 | |
cbdca852 | 536 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
537 | if (r < 0) |
538 | return r; | |
cbdca852 | 539 | else if (r > 0) { |
bc302926 | 540 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
541 | np = cp; |
542 | } | |
543 | } | |
b4e5f920 | 544 | |
bc302926 ZJS |
545 | if (np == 0) |
546 | return 0; | |
547 | ||
cbdca852 | 548 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 549 | Match *i, *last_moved; |
de190aef | 550 | |
cbdca852 | 551 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 552 | * this until we find an offset that matches for all |
cbdca852 | 553 | * matches. */ |
de190aef | 554 | |
cbdca852 LP |
555 | if (!m->matches) |
556 | return 0; | |
de7b95cd | 557 | |
2bc8ca0c ZJS |
558 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
559 | if (r <= 0) | |
560 | return r; | |
de190aef | 561 | |
2bc8ca0c ZJS |
562 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
563 | last_moved = m->matches; | |
de190aef | 564 | |
2bc8ca0c ZJS |
565 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
566 | uint64_t cp; | |
de190aef | 567 | |
2bc8ca0c ZJS |
568 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
569 | if (r <= 0) | |
570 | return r; | |
de190aef | 571 | |
2bc8ca0c ZJS |
572 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
573 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
574 | np = cp; | |
575 | last_moved = i; | |
de190aef | 576 | } |
2bc8ca0c | 577 | } |
cbdca852 | 578 | } |
de190aef | 579 | |
bc302926 | 580 | assert(np > 0); |
de190aef | 581 | |
cbdca852 LP |
582 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
583 | if (r < 0) | |
584 | return r; | |
de7b95cd | 585 | |
de190aef | 586 | if (ret) |
cbdca852 | 587 | *ret = n; |
de190aef | 588 | if (offset) |
cbdca852 | 589 | *offset = np; |
de190aef LP |
590 | |
591 | return 1; | |
592 | } | |
593 | ||
cbdca852 LP |
594 | static int find_location_for_match( |
595 | sd_journal *j, | |
596 | Match *m, | |
597 | JournalFile *f, | |
598 | direction_t direction, | |
599 | Object **ret, | |
600 | uint64_t *offset) { | |
601 | ||
de190aef | 602 | int r; |
de190aef LP |
603 | |
604 | assert(j); | |
cbdca852 | 605 | assert(m); |
de190aef | 606 | assert(f); |
de190aef | 607 | |
cbdca852 LP |
608 | if (m->type == MATCH_DISCRETE) { |
609 | uint64_t dp; | |
de190aef | 610 | |
cbdca852 | 611 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
612 | if (r <= 0) |
613 | return r; | |
614 | ||
cbdca852 | 615 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 616 | |
cbdca852 LP |
617 | if (j->current_location.type == LOCATION_HEAD) |
618 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
619 | if (j->current_location.type == LOCATION_TAIL) | |
620 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
621 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
622 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
623 | if (j->current_location.monotonic_set) { | |
624 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
625 | if (r != -ENOENT) | |
626 | return r; | |
627 | } | |
628 | if (j->current_location.realtime_set) | |
629 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 630 | |
cbdca852 | 631 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 632 | |
cbdca852 LP |
633 | } else if (m->type == MATCH_OR_TERM) { |
634 | uint64_t np = 0; | |
635 | Object *n; | |
636 | Match *i; | |
de7b95cd | 637 | |
cbdca852 | 638 | /* Find the earliest match */ |
de7b95cd | 639 | |
cbdca852 LP |
640 | LIST_FOREACH(matches, i, m->matches) { |
641 | uint64_t cp; | |
642 | ||
643 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
644 | if (r < 0) | |
645 | return r; | |
646 | else if (r > 0) { | |
647 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
648 | np = cp; | |
de190aef | 649 | } |
cbdca852 | 650 | } |
de190aef | 651 | |
cbdca852 LP |
652 | if (np == 0) |
653 | return 0; | |
de7b95cd | 654 | |
cbdca852 LP |
655 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
656 | if (r < 0) | |
657 | return r; | |
de7b95cd | 658 | |
cbdca852 LP |
659 | if (ret) |
660 | *ret = n; | |
661 | if (offset) | |
662 | *offset = np; | |
de190aef | 663 | |
cbdca852 | 664 | return 1; |
e892bd17 | 665 | |
cbdca852 LP |
666 | } else { |
667 | Match *i; | |
668 | uint64_t np = 0; | |
669 | ||
670 | assert(m->type == MATCH_AND_TERM); | |
671 | ||
672 | /* First jump to the last match, and then find the | |
673 | * next one where all matches match */ | |
674 | ||
675 | if (!m->matches) | |
676 | return 0; | |
677 | ||
678 | LIST_FOREACH(matches, i, m->matches) { | |
679 | uint64_t cp; | |
680 | ||
681 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
682 | if (r <= 0) | |
4b067dc9 LP |
683 | return r; |
684 | ||
bc302926 | 685 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 686 | np = cp; |
de7b95cd LP |
687 | } |
688 | ||
cbdca852 LP |
689 | return next_for_match(j, m, f, np, direction, ret, offset); |
690 | } | |
691 | } | |
de190aef | 692 | |
cbdca852 LP |
693 | static int find_location_with_matches( |
694 | sd_journal *j, | |
695 | JournalFile *f, | |
696 | direction_t direction, | |
697 | Object **ret, | |
698 | uint64_t *offset) { | |
699 | ||
700 | int r; | |
701 | ||
702 | assert(j); | |
703 | assert(f); | |
704 | assert(ret); | |
705 | assert(offset); | |
706 | ||
707 | if (!j->level0) { | |
708 | /* No matches is simple */ | |
709 | ||
710 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 711 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 712 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 713 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
714 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
715 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
716 | if (j->current_location.monotonic_set) { | |
717 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
718 | if (r != -ENOENT) | |
719 | return r; | |
de7b95cd | 720 | } |
cbdca852 LP |
721 | if (j->current_location.realtime_set) |
722 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 723 | |
f534928a | 724 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
725 | } else |
726 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
727 | } | |
de7b95cd | 728 | |
cbdca852 LP |
729 | static int next_with_matches( |
730 | sd_journal *j, | |
731 | JournalFile *f, | |
732 | direction_t direction, | |
733 | Object **ret, | |
734 | uint64_t *offset) { | |
735 | ||
cbdca852 LP |
736 | assert(j); |
737 | assert(f); | |
738 | assert(ret); | |
739 | assert(offset); | |
740 | ||
cbdca852 LP |
741 | /* No matches is easy. We simple advance the file |
742 | * pointer by one. */ | |
743 | if (!j->level0) | |
b29ddfcb | 744 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
745 | |
746 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 747 | * with an offset at least one step larger */ |
b29ddfcb MS |
748 | return next_for_match(j, j->level0, f, |
749 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
750 | : f->current_offset - 1, | |
751 | direction, ret, offset); | |
de7b95cd LP |
752 | } |
753 | ||
58439db4 | 754 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 755 | Object *c; |
6e693b42 | 756 | uint64_t cp, n_entries; |
cbdca852 | 757 | int r; |
de190aef LP |
758 | |
759 | assert(j); | |
760 | assert(f); | |
761 | ||
950c07d4 MS |
762 | n_entries = le64toh(f->header->n_entries); |
763 | ||
764 | /* If we hit EOF before, we don't need to look into this file again | |
765 | * unless direction changed or new entries appeared. */ | |
766 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
767 | n_entries == f->last_n_entries) | |
768 | return 0; | |
668c965a | 769 | |
950c07d4 MS |
770 | f->last_n_entries = n_entries; |
771 | ||
772 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
773 | /* LOCATION_SEEK here means we did the work in a previous |
774 | * iteration and the current location already points to a | |
775 | * candidate entry. */ | |
487d3720 MS |
776 | if (f->location_type != LOCATION_SEEK) { |
777 | r = next_with_matches(j, f, direction, &c, &cp); | |
778 | if (r <= 0) | |
779 | return r; | |
466ccd92 | 780 | |
950c07d4 | 781 | journal_file_save_location(f, c, cp); |
487d3720 | 782 | } |
de190aef | 783 | } else { |
950c07d4 MS |
784 | f->last_direction = direction; |
785 | ||
cbdca852 | 786 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
787 | if (r <= 0) |
788 | return r; | |
487d3720 | 789 | |
950c07d4 | 790 | journal_file_save_location(f, c, cp); |
de190aef LP |
791 | } |
792 | ||
bc302926 | 793 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
794 | * that is actually different from what we were previously |
795 | * looking at. This is necessary to handle entries which exist | |
796 | * in two (or more) journal files, and which shall all be | |
797 | * suppressed but one. */ | |
798 | ||
de190aef LP |
799 | for (;;) { |
800 | bool found; | |
801 | ||
802 | if (j->current_location.type == LOCATION_DISCRETE) { | |
803 | int k; | |
804 | ||
487d3720 | 805 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
806 | |
807 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
808 | } else |
809 | found = true; | |
810 | ||
487d3720 | 811 | if (found) |
de190aef | 812 | return 1; |
de190aef LP |
813 | |
814 | r = next_with_matches(j, f, direction, &c, &cp); | |
815 | if (r <= 0) | |
816 | return r; | |
487d3720 | 817 | |
950c07d4 | 818 | journal_file_save_location(f, c, cp); |
de190aef LP |
819 | } |
820 | } | |
821 | ||
e892bd17 | 822 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de | 823 | JournalFile *f, *new_file = NULL; |
cec736d2 | 824 | Iterator i; |
a002d44b | 825 | Object *o; |
87d2c1ff LP |
826 | int r; |
827 | ||
1ae464e0 TA |
828 | assert_return(j, -EINVAL); |
829 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 830 | |
c1f906bd | 831 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 832 | bool found; |
87d2c1ff | 833 | |
58439db4 | 834 | r = next_beyond_location(j, f, direction); |
e590af26 | 835 | if (r < 0) { |
da927ba9 | 836 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 837 | remove_file_real(j, f); |
e590af26 | 838 | continue; |
6573ef05 MS |
839 | } else if (r == 0) { |
840 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 841 | continue; |
6573ef05 | 842 | } |
87d2c1ff | 843 | |
468b21de | 844 | if (!new_file) |
de190aef LP |
845 | found = true; |
846 | else { | |
847 | int k; | |
848 | ||
d8ae66d7 | 849 | k = journal_file_compare_locations(f, new_file); |
de190aef | 850 | |
bc302926 | 851 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
852 | } |
853 | ||
e499c999 | 854 | if (found) |
468b21de | 855 | new_file = f; |
87d2c1ff LP |
856 | } |
857 | ||
468b21de | 858 | if (!new_file) |
de190aef | 859 | return 0; |
ae2cc8ef | 860 | |
e499c999 | 861 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
862 | if (r < 0) |
863 | return r; | |
864 | ||
1eb6332d | 865 | set_location(j, new_file, o); |
ae2cc8ef | 866 | |
de190aef LP |
867 | return 1; |
868 | } | |
ae2cc8ef | 869 | |
a5344d2c | 870 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
871 | return real_journal_next(j, DIRECTION_DOWN); |
872 | } | |
ae2cc8ef | 873 | |
a5344d2c | 874 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
875 | return real_journal_next(j, DIRECTION_UP); |
876 | } | |
ae2cc8ef | 877 | |
6f003b43 | 878 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 879 | int c = 0, r; |
ae2cc8ef | 880 | |
1ae464e0 TA |
881 | assert_return(j, -EINVAL); |
882 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 883 | |
6f003b43 LP |
884 | if (skip == 0) { |
885 | /* If this is not a discrete skip, then at least | |
886 | * resolve the current location */ | |
887 | if (j->current_location.type != LOCATION_DISCRETE) | |
888 | return real_journal_next(j, direction); | |
889 | ||
890 | return 0; | |
891 | } | |
892 | ||
893 | do { | |
894 | r = real_journal_next(j, direction); | |
de190aef LP |
895 | if (r < 0) |
896 | return r; | |
897 | ||
898 | if (r == 0) | |
899 | return c; | |
900 | ||
901 | skip--; | |
902 | c++; | |
6f003b43 | 903 | } while (skip > 0); |
87d2c1ff | 904 | |
de190aef | 905 | return c; |
87d2c1ff LP |
906 | } |
907 | ||
6f003b43 LP |
908 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
909 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
910 | } | |
de190aef | 911 | |
6f003b43 LP |
912 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
913 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
914 | } |
915 | ||
a5344d2c | 916 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 917 | Object *o; |
87d2c1ff | 918 | int r; |
3fbf9cbb | 919 | char bid[33], sid[33]; |
87d2c1ff | 920 | |
1ae464e0 TA |
921 | assert_return(j, -EINVAL); |
922 | assert_return(!journal_pid_changed(j), -ECHILD); | |
923 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 924 | |
3fbf9cbb LP |
925 | if (!j->current_file || j->current_file->current_offset <= 0) |
926 | return -EADDRNOTAVAIL; | |
87d2c1ff | 927 | |
de190aef | 928 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
929 | if (r < 0) |
930 | return r; | |
931 | ||
3fbf9cbb LP |
932 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
933 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 934 | |
3fbf9cbb | 935 | if (asprintf(cursor, |
507f22bd ZJS |
936 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
937 | sid, le64toh(o->entry.seqnum), | |
938 | bid, le64toh(o->entry.monotonic), | |
939 | le64toh(o->entry.realtime), | |
940 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 941 | return -ENOMEM; |
87d2c1ff | 942 | |
6f47ad30 | 943 | return 0; |
87d2c1ff LP |
944 | } |
945 | ||
a5344d2c | 946 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 947 | const char *word, *state; |
de190aef | 948 | size_t l; |
de190aef LP |
949 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
950 | bool | |
951 | seqnum_id_set = false, | |
952 | seqnum_set = false, | |
953 | boot_id_set = false, | |
954 | monotonic_set = false, | |
955 | realtime_set = false, | |
956 | xor_hash_set = false; | |
957 | sd_id128_t seqnum_id, boot_id; | |
958 | ||
1ae464e0 TA |
959 | assert_return(j, -EINVAL); |
960 | assert_return(!journal_pid_changed(j), -ECHILD); | |
961 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 962 | |
a2a5291b | 963 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
964 | char *item; |
965 | int k = 0; | |
966 | ||
a2a5291b | 967 | if (l < 2 || word[1] != '=') |
de190aef LP |
968 | return -EINVAL; |
969 | ||
a2a5291b | 970 | item = strndup(word, l); |
de190aef LP |
971 | if (!item) |
972 | return -ENOMEM; | |
973 | ||
a2a5291b | 974 | switch (word[0]) { |
de190aef LP |
975 | |
976 | case 's': | |
977 | seqnum_id_set = true; | |
be3ea5ea | 978 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
979 | break; |
980 | ||
981 | case 'i': | |
982 | seqnum_set = true; | |
be3ea5ea | 983 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
984 | k = -EINVAL; |
985 | break; | |
986 | ||
987 | case 'b': | |
988 | boot_id_set = true; | |
be3ea5ea | 989 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
990 | break; |
991 | ||
992 | case 'm': | |
993 | monotonic_set = true; | |
be3ea5ea | 994 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
995 | k = -EINVAL; |
996 | break; | |
997 | ||
998 | case 't': | |
999 | realtime_set = true; | |
be3ea5ea | 1000 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1001 | k = -EINVAL; |
1002 | break; | |
1003 | ||
1004 | case 'x': | |
1005 | xor_hash_set = true; | |
be3ea5ea | 1006 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1007 | k = -EINVAL; |
1008 | break; | |
1009 | } | |
1010 | ||
1011 | free(item); | |
1012 | ||
1013 | if (k < 0) | |
1014 | return k; | |
1015 | } | |
1016 | ||
1017 | if ((!seqnum_set || !seqnum_id_set) && | |
1018 | (!monotonic_set || !boot_id_set) && | |
1019 | !realtime_set) | |
1020 | return -EINVAL; | |
1021 | ||
1022 | reset_location(j); | |
1023 | ||
a87247dd | 1024 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1025 | |
1026 | if (realtime_set) { | |
1027 | j->current_location.realtime = (uint64_t) realtime; | |
1028 | j->current_location.realtime_set = true; | |
1029 | } | |
1030 | ||
1031 | if (seqnum_set && seqnum_id_set) { | |
1032 | j->current_location.seqnum = (uint64_t) seqnum; | |
1033 | j->current_location.seqnum_id = seqnum_id; | |
1034 | j->current_location.seqnum_set = true; | |
1035 | } | |
1036 | ||
1037 | if (monotonic_set && boot_id_set) { | |
1038 | j->current_location.monotonic = (uint64_t) monotonic; | |
1039 | j->current_location.boot_id = boot_id; | |
1040 | j->current_location.monotonic_set = true; | |
1041 | } | |
1042 | ||
1043 | if (xor_hash_set) { | |
1044 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1045 | j->current_location.xor_hash_set = true; | |
1046 | } | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | ||
c6511e85 LP |
1051 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1052 | int r; | |
c6511e85 LP |
1053 | Object *o; |
1054 | ||
1ae464e0 TA |
1055 | assert_return(j, -EINVAL); |
1056 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1057 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1058 | |
1059 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1060 | return -EADDRNOTAVAIL; | |
1061 | ||
1062 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1063 | if (r < 0) | |
1064 | return r; | |
1065 | ||
7294bb5b | 1066 | for(;;) { |
c6511e85 | 1067 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1068 | unsigned long long ll; |
7294bb5b | 1069 | sd_id128_t id; |
c6511e85 LP |
1070 | int k = 0; |
1071 | ||
7294bb5b SS |
1072 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1073 | if (r < 0) | |
1074 | return r; | |
c6511e85 | 1075 | |
7294bb5b SS |
1076 | if (r == 0) |
1077 | break; | |
c6511e85 | 1078 | |
7294bb5b SS |
1079 | if (strlen(item) < 2 || item[1] != '=') |
1080 | return -EINVAL; | |
1081 | ||
1082 | switch (item[0]) { | |
c6511e85 LP |
1083 | |
1084 | case 's': | |
1085 | k = sd_id128_from_string(item+2, &id); | |
1086 | if (k < 0) | |
1087 | return k; | |
1088 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1089 | return 0; | |
1090 | break; | |
1091 | ||
1092 | case 'i': | |
1093 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1094 | return -EINVAL; | |
1095 | if (ll != le64toh(o->entry.seqnum)) | |
1096 | return 0; | |
1097 | break; | |
1098 | ||
1099 | case 'b': | |
1100 | k = sd_id128_from_string(item+2, &id); | |
1101 | if (k < 0) | |
1102 | return k; | |
1103 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1104 | return 0; | |
1105 | break; | |
1106 | ||
1107 | case 'm': | |
1108 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1109 | return -EINVAL; | |
1110 | if (ll != le64toh(o->entry.monotonic)) | |
1111 | return 0; | |
1112 | break; | |
1113 | ||
1114 | case 't': | |
1115 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1116 | return -EINVAL; | |
1117 | if (ll != le64toh(o->entry.realtime)) | |
1118 | return 0; | |
1119 | break; | |
1120 | ||
1121 | case 'x': | |
1122 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1123 | return -EINVAL; | |
1124 | if (ll != le64toh(o->entry.xor_hash)) | |
1125 | return 0; | |
1126 | break; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | return 1; | |
1131 | } | |
1132 | ||
1133 | ||
a5344d2c | 1134 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1135 | assert_return(j, -EINVAL); |
1136 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1137 | |
1138 | reset_location(j); | |
a87247dd | 1139 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1140 | j->current_location.boot_id = boot_id; |
1141 | j->current_location.monotonic = usec; | |
1142 | j->current_location.monotonic_set = true; | |
1143 | ||
1144 | return 0; | |
1145 | } | |
1146 | ||
a5344d2c | 1147 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1148 | assert_return(j, -EINVAL); |
1149 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1150 | |
1151 | reset_location(j); | |
a87247dd | 1152 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1153 | j->current_location.realtime = usec; |
1154 | j->current_location.realtime_set = true; | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | ||
a5344d2c | 1159 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1160 | assert_return(j, -EINVAL); |
1161 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1162 | |
1163 | reset_location(j); | |
1164 | j->current_location.type = LOCATION_HEAD; | |
1165 | ||
1166 | return 0; | |
1167 | } | |
1168 | ||
a5344d2c | 1169 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1170 | assert_return(j, -EINVAL); |
1171 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1172 | |
1173 | reset_location(j); | |
1174 | j->current_location.type = LOCATION_TAIL; | |
1175 | ||
1176 | return 0; | |
87d2c1ff LP |
1177 | } |
1178 | ||
85210bff LP |
1179 | static void check_network(sd_journal *j, int fd) { |
1180 | struct statfs sfs; | |
1181 | ||
1182 | assert(j); | |
1183 | ||
1184 | if (j->on_network) | |
1185 | return; | |
1186 | ||
1187 | if (fstatfs(fd, &sfs) < 0) | |
1188 | return; | |
1189 | ||
1190 | j->on_network = | |
c51cf056 ZJS |
1191 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1192 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1193 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1194 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1195 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1196 | } |
1197 | ||
a688baa8 ZJS |
1198 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1199 | const char *full, *tilded, *atted; | |
1200 | ||
63c372cb LP |
1201 | full = strjoina(prefix, ".journal"); |
1202 | tilded = strjoina(full, "~"); | |
1203 | atted = strjoina(prefix, "@"); | |
a688baa8 ZJS |
1204 | |
1205 | return streq(filename, full) || | |
1206 | streq(filename, tilded) || | |
1207 | startswith(filename, atted); | |
1208 | } | |
1209 | ||
1210 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1211 | assert(filename); |
1212 | ||
a688baa8 ZJS |
1213 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) |
1214 | return false; | |
1215 | ||
1216 | /* no flags set → every type is OK */ | |
1217 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1218 | return true; | |
1219 | ||
1220 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1221 | return true; | |
1222 | ||
1223 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1224 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1225 | ||
5ffa8c81 | 1226 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1227 | |
1228 | if (file_has_type_prefix(prefix, filename)) | |
1229 | return true; | |
1230 | } | |
1231 | ||
1232 | return false; | |
1233 | } | |
1234 | ||
5302ebe1 | 1235 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1236 | JournalFile *f = NULL; |
d617408e | 1237 | int r, k; |
3fbf9cbb LP |
1238 | |
1239 | assert(j); | |
5302ebe1 | 1240 | assert(path); |
3fbf9cbb | 1241 | |
c1f906bd | 1242 | if (ordered_hashmap_get(j->files, path)) |
50f20cfd | 1243 | return 0; |
50f20cfd | 1244 | |
9e8abdf0 | 1245 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
d617408e LP |
1246 | log_debug("Too many open journal files, not adding %s.", path); |
1247 | r = -ETOOMANYREFS; | |
1248 | goto fail; | |
9e8abdf0 LP |
1249 | } |
1250 | ||
b58c888f | 1251 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, NULL, &f); |
d617408e LP |
1252 | if (r < 0) { |
1253 | log_debug_errno(r, "Failed to open journal file %s: %m", path); | |
1254 | goto fail; | |
1255 | } | |
3fbf9cbb | 1256 | |
72f59706 | 1257 | /* journal_file_dump(f); */ |
de190aef | 1258 | |
c1f906bd | 1259 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1260 | if (r < 0) { |
69a3a6fd | 1261 | (void) journal_file_close(f); |
d617408e | 1262 | goto fail; |
3fbf9cbb LP |
1263 | } |
1264 | ||
5ec76417 | 1265 | log_debug("File %s added.", f->path); |
a50d7d43 | 1266 | |
85210bff LP |
1267 | check_network(j, f->fd); |
1268 | ||
a963990f LP |
1269 | j->current_invalidate_counter ++; |
1270 | ||
50f20cfd | 1271 | return 0; |
d617408e LP |
1272 | |
1273 | fail: | |
5768d259 | 1274 | k = journal_put_error(j, r, path); |
d617408e LP |
1275 | if (k < 0) |
1276 | return k; | |
1277 | ||
1278 | return r; | |
50f20cfd LP |
1279 | } |
1280 | ||
5302ebe1 | 1281 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
d617408e | 1282 | const char *path; |
5302ebe1 ZJS |
1283 | |
1284 | assert(j); | |
1285 | assert(prefix); | |
1286 | assert(filename); | |
1287 | ||
1288 | if (j->no_new_files || | |
1289 | !file_type_wanted(j->flags, filename)) | |
1290 | return 0; | |
1291 | ||
d617408e | 1292 | path = strjoina(prefix, "/", filename); |
39fd5b08 JS |
1293 | |
1294 | if (!j->has_runtime_files && path_startswith(path, "/run/log/journal")) | |
1295 | j->has_runtime_files = true; | |
1296 | else if (!j->has_persistent_files && path_startswith(path, "/var/log/journal")) | |
1297 | j->has_persistent_files = true; | |
1298 | ||
d617408e | 1299 | return add_any_file(j, path); |
5302ebe1 ZJS |
1300 | } |
1301 | ||
d617408e LP |
1302 | static void remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1303 | const char *path; | |
50f20cfd LP |
1304 | JournalFile *f; |
1305 | ||
1306 | assert(j); | |
1307 | assert(prefix); | |
1308 | assert(filename); | |
1309 | ||
d617408e | 1310 | path = strjoina(prefix, "/", filename); |
c1f906bd | 1311 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1312 | if (!f) |
d617408e | 1313 | return; |
50f20cfd | 1314 | |
a9a245c1 | 1315 | remove_file_real(j, f); |
a9a245c1 ZJS |
1316 | } |
1317 | ||
1318 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1319 | assert(j); | |
1320 | assert(f); | |
1321 | ||
c1f906bd | 1322 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1323 | |
5ec76417 | 1324 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1325 | |
3c1668da LP |
1326 | if (j->current_file == f) { |
1327 | j->current_file = NULL; | |
1328 | j->current_field = 0; | |
1329 | } | |
1330 | ||
1331 | if (j->unique_file == f) { | |
360af4cf | 1332 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1333 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1334 | j->unique_offset = 0; |
360af4cf ZJS |
1335 | if (!j->unique_file) |
1336 | j->unique_file_lost = true; | |
3c1668da LP |
1337 | } |
1338 | ||
eb86030e LP |
1339 | if (j->fields_file == f) { |
1340 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1341 | j->fields_offset = 0; | |
1342 | if (!j->fields_file) | |
1343 | j->fields_file_lost = true; | |
1344 | } | |
1345 | ||
69a3a6fd | 1346 | (void) journal_file_close(f); |
50f20cfd | 1347 | |
a963990f | 1348 | j->current_invalidate_counter ++; |
3fbf9cbb LP |
1349 | } |
1350 | ||
d617408e LP |
1351 | static int dirname_is_machine_id(const char *fn) { |
1352 | sd_id128_t id, machine; | |
1353 | int r; | |
1354 | ||
1355 | r = sd_id128_get_machine(&machine); | |
1356 | if (r < 0) | |
1357 | return r; | |
1358 | ||
1359 | r = sd_id128_from_string(fn, &id); | |
1360 | if (r < 0) | |
1361 | return r; | |
1362 | ||
1363 | return sd_id128_equal(id, machine); | |
1364 | } | |
1365 | ||
a963990f | 1366 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1367 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1368 | _cleanup_closedir_ DIR *d = NULL; |
d617408e | 1369 | struct dirent *de = NULL; |
a963990f | 1370 | Directory *m; |
d617408e | 1371 | int r, k; |
3fbf9cbb LP |
1372 | |
1373 | assert(j); | |
1374 | assert(prefix); | |
a963990f | 1375 | assert(dirname); |
3fbf9cbb | 1376 | |
d95b1fb3 ZJS |
1377 | log_debug("Considering %s/%s.", prefix, dirname); |
1378 | ||
cf244689 | 1379 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
d617408e | 1380 | !(dirname_is_machine_id(dirname) > 0 || path_startswith(prefix, "/run"))) |
cf244689 LP |
1381 | return 0; |
1382 | ||
b7def684 | 1383 | path = strjoin(prefix, "/", dirname, NULL); |
d617408e LP |
1384 | if (!path) { |
1385 | r = -ENOMEM; | |
1386 | goto fail; | |
1387 | } | |
3fbf9cbb | 1388 | |
a963990f | 1389 | d = opendir(path); |
3fbf9cbb | 1390 | if (!d) { |
d617408e LP |
1391 | r = log_debug_errno(errno, "Failed to open directory %s: %m", path); |
1392 | goto fail; | |
3fbf9cbb LP |
1393 | } |
1394 | ||
a963990f LP |
1395 | m = hashmap_get(j->directories_by_path, path); |
1396 | if (!m) { | |
1397 | m = new0(Directory, 1); | |
d617408e LP |
1398 | if (!m) { |
1399 | r = -ENOMEM; | |
1400 | goto fail; | |
1401 | } | |
a963990f LP |
1402 | |
1403 | m->is_root = false; | |
1404 | m->path = path; | |
1405 | ||
1406 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1407 | free(m); |
d617408e LP |
1408 | r = -ENOMEM; |
1409 | goto fail; | |
a963990f LP |
1410 | } |
1411 | ||
a50d7d43 | 1412 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1413 | j->current_invalidate_counter ++; |
1414 | ||
5ec76417 | 1415 | log_debug("Directory %s added.", m->path); |
a963990f | 1416 | |
a50d7d43 | 1417 | } else if (m->is_root) |
a963990f | 1418 | return 0; |
a963990f LP |
1419 | |
1420 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1421 | ||
1422 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1423 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1424 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1425 | IN_ONLYDIR); |
a963990f LP |
1426 | |
1427 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1428 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1429 | } | |
1430 | ||
d617408e | 1431 | FOREACH_DIRENT_ALL(de, d, return log_debug_errno(errno, "Failed to read directory %s: %m", m->path)) { |
a963990f | 1432 | |
de2c3907 | 1433 | if (dirent_is_file_with_suffix(de, ".journal") || |
d617408e LP |
1434 | dirent_is_file_with_suffix(de, ".journal~")) |
1435 | (void) add_file(j, m->path, de->d_name); | |
a963990f LP |
1436 | } |
1437 | ||
85210bff LP |
1438 | check_network(j, dirfd(d)); |
1439 | ||
a963990f | 1440 | return 0; |
d617408e LP |
1441 | |
1442 | fail: | |
5768d259 | 1443 | k = journal_put_error(j, r, path ?: dirname); |
d617408e LP |
1444 | if (k < 0) |
1445 | return k; | |
1446 | ||
1447 | return r; | |
a963990f LP |
1448 | } |
1449 | ||
d617408e | 1450 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
7fd1b19b | 1451 | _cleanup_closedir_ DIR *d = NULL; |
d617408e | 1452 | struct dirent *de; |
a963990f | 1453 | Directory *m; |
d617408e | 1454 | int r, k; |
a963990f LP |
1455 | |
1456 | assert(j); | |
1457 | assert(p); | |
1458 | ||
1459 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1460 | !path_startswith(p, "/run")) | |
1461 | return -EINVAL; | |
1462 | ||
89739579 | 1463 | if (j->prefix) |
63c372cb | 1464 | p = strjoina(j->prefix, p); |
b6741478 | 1465 | |
a963990f | 1466 | d = opendir(p); |
d617408e LP |
1467 | if (!d) { |
1468 | if (errno == ENOENT && missing_ok) | |
1469 | return 0; | |
1470 | ||
1471 | r = log_debug_errno(errno, "Failed to open root directory %s: %m", p); | |
1472 | goto fail; | |
1473 | } | |
a963990f LP |
1474 | |
1475 | m = hashmap_get(j->directories_by_path, p); | |
1476 | if (!m) { | |
1477 | m = new0(Directory, 1); | |
d617408e LP |
1478 | if (!m) { |
1479 | r = -ENOMEM; | |
1480 | goto fail; | |
1481 | } | |
a963990f LP |
1482 | |
1483 | m->is_root = true; | |
1484 | m->path = strdup(p); | |
1485 | if (!m->path) { | |
a963990f | 1486 | free(m); |
d617408e LP |
1487 | r = -ENOMEM; |
1488 | goto fail; | |
a963990f LP |
1489 | } |
1490 | ||
1491 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1492 | free(m->path); |
1493 | free(m); | |
d617408e LP |
1494 | r = -ENOMEM; |
1495 | goto fail; | |
a963990f LP |
1496 | } |
1497 | ||
1498 | j->current_invalidate_counter ++; | |
1499 | ||
5ec76417 | 1500 | log_debug("Root directory %s added.", m->path); |
a963990f | 1501 | |
a50d7d43 | 1502 | } else if (!m->is_root) |
a963990f | 1503 | return 0; |
50f20cfd | 1504 | |
a963990f LP |
1505 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1506 | ||
1507 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1508 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1509 | IN_ONLYDIR); |
a963990f LP |
1510 | |
1511 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1512 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1513 | } | |
50f20cfd | 1514 | |
5302ebe1 ZJS |
1515 | if (j->no_new_files) |
1516 | return 0; | |
1517 | ||
d617408e | 1518 | FOREACH_DIRENT_ALL(de, d, return log_debug_errno(errno, "Failed to read directory %s: %m", m->path)) { |
a963990f | 1519 | sd_id128_t id; |
3fbf9cbb | 1520 | |
de2c3907 | 1521 | if (dirent_is_file_with_suffix(de, ".journal") || |
d617408e LP |
1522 | dirent_is_file_with_suffix(de, ".journal~")) |
1523 | (void) add_file(j, m->path, de->d_name); | |
1524 | else if (IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN) && | |
1525 | sd_id128_from_string(de->d_name, &id) >= 0) | |
1526 | (void) add_directory(j, m->path, de->d_name); | |
3fbf9cbb LP |
1527 | } |
1528 | ||
85210bff LP |
1529 | check_network(j, dirfd(d)); |
1530 | ||
a963990f | 1531 | return 0; |
d617408e LP |
1532 | |
1533 | fail: | |
5768d259 | 1534 | k = journal_put_error(j, r, p); |
d617408e LP |
1535 | if (k < 0) |
1536 | return k; | |
1537 | ||
1538 | return r; | |
a963990f LP |
1539 | } |
1540 | ||
b2b46f91 | 1541 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1542 | assert(j); |
1543 | ||
1544 | if (d->wd > 0) { | |
1545 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1546 | ||
1547 | if (j->inotify_fd >= 0) | |
1548 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1549 | } | |
1550 | ||
1551 | hashmap_remove(j->directories_by_path, d->path); | |
1552 | ||
1553 | if (d->is_root) | |
5ec76417 | 1554 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1555 | else |
5ec76417 | 1556 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1557 | |
1558 | free(d->path); | |
1559 | free(d); | |
3fbf9cbb LP |
1560 | } |
1561 | ||
89739579 | 1562 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1563 | |
1564 | static const char search_paths[] = | |
a963990f LP |
1565 | "/run/log/journal\0" |
1566 | "/var/log/journal\0"; | |
1567 | const char *p; | |
50f20cfd LP |
1568 | |
1569 | assert(j); | |
50f20cfd | 1570 | |
a963990f LP |
1571 | /* We ignore most errors here, since the idea is to only open |
1572 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1573 | |
d617408e LP |
1574 | NULSTR_FOREACH(p, search_paths) |
1575 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1576 | |
a963990f | 1577 | return 0; |
50f20cfd LP |
1578 | } |
1579 | ||
5302ebe1 ZJS |
1580 | static int add_current_paths(sd_journal *j) { |
1581 | Iterator i; | |
1582 | JournalFile *f; | |
1583 | ||
1584 | assert(j); | |
1585 | assert(j->no_new_files); | |
1586 | ||
1587 | /* Simply adds all directories for files we have open as | |
1588 | * "root" directories. We don't expect errors here, so we | |
1589 | * treat them as fatal. */ | |
1590 | ||
c1f906bd | 1591 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1592 | _cleanup_free_ char *dir; |
e9174f29 | 1593 | int r; |
5302ebe1 ZJS |
1594 | |
1595 | dir = dirname_malloc(f->path); | |
1596 | if (!dir) | |
1597 | return -ENOMEM; | |
1598 | ||
d617408e LP |
1599 | r = add_root_directory(j, dir, true); |
1600 | if (r < 0) | |
5302ebe1 | 1601 | return r; |
5302ebe1 ZJS |
1602 | } |
1603 | ||
1604 | return 0; | |
1605 | } | |
1606 | ||
a963990f | 1607 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1608 | assert(j); |
50f20cfd | 1609 | |
a963990f LP |
1610 | if (j->inotify_fd < 0) { |
1611 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1612 | if (j->inotify_fd < 0) | |
1613 | return -errno; | |
1614 | } | |
50f20cfd | 1615 | |
a963990f | 1616 | if (!j->directories_by_wd) { |
d5099efc | 1617 | j->directories_by_wd = hashmap_new(NULL); |
a963990f LP |
1618 | if (!j->directories_by_wd) |
1619 | return -ENOMEM; | |
50f20cfd | 1620 | } |
a963990f LP |
1621 | |
1622 | return 0; | |
50f20cfd LP |
1623 | } |
1624 | ||
7827b1a1 | 1625 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1626 | sd_journal *j; |
50f20cfd | 1627 | |
a963990f LP |
1628 | j = new0(sd_journal, 1); |
1629 | if (!j) | |
1630 | return NULL; | |
50f20cfd | 1631 | |
a65f06bb | 1632 | j->original_pid = getpid(); |
a963990f LP |
1633 | j->inotify_fd = -1; |
1634 | j->flags = flags; | |
93b73b06 | 1635 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1636 | |
7827b1a1 LP |
1637 | if (path) { |
1638 | j->path = strdup(path); | |
6180fc61 ZJS |
1639 | if (!j->path) |
1640 | goto fail; | |
7827b1a1 LP |
1641 | } |
1642 | ||
c1f906bd | 1643 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1644 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1645 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1646 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1647 | goto fail; |
16e9f408 | 1648 | |
a963990f | 1649 | return j; |
6180fc61 ZJS |
1650 | |
1651 | fail: | |
1652 | sd_journal_close(j); | |
1653 | return NULL; | |
50f20cfd LP |
1654 | } |
1655 | ||
a5344d2c | 1656 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1657 | sd_journal *j; |
3fbf9cbb | 1658 | int r; |
87d2c1ff | 1659 | |
1ae464e0 | 1660 | assert_return(ret, -EINVAL); |
b6741478 | 1661 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1662 | |
7827b1a1 | 1663 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1664 | if (!j) |
1665 | return -ENOMEM; | |
1666 | ||
89739579 | 1667 | r = add_search_paths(j); |
a963990f | 1668 | if (r < 0) |
50f20cfd | 1669 | goto fail; |
50f20cfd | 1670 | |
a963990f LP |
1671 | *ret = j; |
1672 | return 0; | |
cf244689 | 1673 | |
a963990f LP |
1674 | fail: |
1675 | sd_journal_close(j); | |
87d2c1ff | 1676 | |
a963990f LP |
1677 | return r; |
1678 | } | |
50f20cfd | 1679 | |
b6741478 LP |
1680 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1681 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1682 | sd_journal *j; | |
1683 | char *p; | |
1684 | int r; | |
1685 | ||
1686 | assert_return(machine, -EINVAL); | |
1687 | assert_return(ret, -EINVAL); | |
1688 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1689 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1690 | |
63c372cb | 1691 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1692 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1693 | if (r == -ENOENT) | |
1694 | return -EHOSTDOWN; | |
1695 | if (r < 0) | |
1696 | return r; | |
1697 | if (!root) | |
1698 | return -ENODATA; | |
1699 | ||
1700 | if (!streq_ptr(class, "container")) | |
1701 | return -EIO; | |
1702 | ||
1703 | j = journal_new(flags, NULL); | |
1704 | if (!j) | |
1705 | return -ENOMEM; | |
1706 | ||
89739579 LP |
1707 | j->prefix = root; |
1708 | root = NULL; | |
1709 | ||
1710 | r = add_search_paths(j); | |
b6741478 LP |
1711 | if (r < 0) |
1712 | goto fail; | |
1713 | ||
1714 | *ret = j; | |
1715 | return 0; | |
1716 | ||
1717 | fail: | |
1718 | sd_journal_close(j); | |
1719 | return r; | |
1720 | } | |
1721 | ||
a963990f LP |
1722 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1723 | sd_journal *j; | |
1724 | int r; | |
87d2c1ff | 1725 | |
1ae464e0 TA |
1726 | assert_return(ret, -EINVAL); |
1727 | assert_return(path, -EINVAL); | |
1728 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1729 | |
7827b1a1 | 1730 | j = journal_new(flags, path); |
a963990f LP |
1731 | if (!j) |
1732 | return -ENOMEM; | |
3fbf9cbb | 1733 | |
d617408e LP |
1734 | r = add_root_directory(j, path, false); |
1735 | if (r < 0) | |
a963990f | 1736 | goto fail; |
87d2c1ff LP |
1737 | |
1738 | *ret = j; | |
1739 | return 0; | |
1740 | ||
1741 | fail: | |
1742 | sd_journal_close(j); | |
1743 | ||
1744 | return r; | |
a963990f | 1745 | } |
87d2c1ff | 1746 | |
5302ebe1 ZJS |
1747 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1748 | sd_journal *j; | |
1749 | const char **path; | |
1750 | int r; | |
1751 | ||
1ae464e0 TA |
1752 | assert_return(ret, -EINVAL); |
1753 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1754 | |
1755 | j = journal_new(flags, NULL); | |
1756 | if (!j) | |
1757 | return -ENOMEM; | |
1758 | ||
1759 | STRV_FOREACH(path, paths) { | |
1760 | r = add_any_file(j, *path); | |
d617408e | 1761 | if (r < 0) |
5302ebe1 | 1762 | goto fail; |
5302ebe1 ZJS |
1763 | } |
1764 | ||
1765 | j->no_new_files = true; | |
1766 | ||
1767 | *ret = j; | |
1768 | return 0; | |
1769 | ||
1770 | fail: | |
1771 | sd_journal_close(j); | |
1772 | ||
1773 | return r; | |
1774 | } | |
1775 | ||
a5344d2c | 1776 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1777 | Directory *d; |
1778 | JournalFile *f; | |
5768d259 | 1779 | char *p; |
a963990f | 1780 | |
a5344d2c LP |
1781 | if (!j) |
1782 | return; | |
87d2c1ff | 1783 | |
54b1da83 LP |
1784 | sd_journal_flush_matches(j); |
1785 | ||
c1f906bd | 1786 | while ((f = ordered_hashmap_steal_first(j->files))) |
69a3a6fd | 1787 | (void) journal_file_close(f); |
50f20cfd | 1788 | |
c1f906bd | 1789 | ordered_hashmap_free(j->files); |
260a2be4 | 1790 | |
a963990f LP |
1791 | while ((d = hashmap_first(j->directories_by_path))) |
1792 | remove_directory(j, d); | |
260a2be4 | 1793 | |
a963990f LP |
1794 | while ((d = hashmap_first(j->directories_by_wd))) |
1795 | remove_directory(j, d); | |
87d2c1ff | 1796 | |
a963990f LP |
1797 | hashmap_free(j->directories_by_path); |
1798 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1799 | |
03e334a1 | 1800 | safe_close(j->inotify_fd); |
50f20cfd | 1801 | |
bf807d4d LP |
1802 | if (j->mmap) { |
1803 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1804 | mmap_cache_unref(j->mmap); |
bf807d4d | 1805 | } |
16e9f408 | 1806 | |
5768d259 LP |
1807 | while ((p = hashmap_steal_first(j->errors))) |
1808 | free(p); | |
1809 | hashmap_free(j->errors); | |
1810 | ||
7827b1a1 | 1811 | free(j->path); |
89739579 | 1812 | free(j->prefix); |
3c1668da | 1813 | free(j->unique_field); |
eb86030e | 1814 | free(j->fields_buffer); |
87d2c1ff LP |
1815 | free(j); |
1816 | } | |
3fbf9cbb | 1817 | |
a5344d2c | 1818 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1819 | Object *o; |
1820 | JournalFile *f; | |
1821 | int r; | |
1822 | ||
1ae464e0 TA |
1823 | assert_return(j, -EINVAL); |
1824 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1825 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1826 | |
1827 | f = j->current_file; | |
1828 | if (!f) | |
de190aef | 1829 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1830 | |
1831 | if (f->current_offset <= 0) | |
de190aef | 1832 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1833 | |
de190aef | 1834 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1835 | if (r < 0) |
1836 | return r; | |
1837 | ||
1838 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1839 | return 0; |
3fbf9cbb LP |
1840 | } |
1841 | ||
a5344d2c | 1842 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1843 | Object *o; |
1844 | JournalFile *f; | |
1845 | int r; | |
1846 | sd_id128_t id; | |
1847 | ||
1ae464e0 TA |
1848 | assert_return(j, -EINVAL); |
1849 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1850 | |
1851 | f = j->current_file; | |
1852 | if (!f) | |
de190aef | 1853 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1854 | |
1855 | if (f->current_offset <= 0) | |
de190aef | 1856 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1857 | |
de190aef | 1858 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1859 | if (r < 0) |
1860 | return r; | |
1861 | ||
de190aef LP |
1862 | if (ret_boot_id) |
1863 | *ret_boot_id = o->entry.boot_id; | |
1864 | else { | |
1865 | r = sd_id128_get_boot(&id); | |
1866 | if (r < 0) | |
1867 | return r; | |
3fbf9cbb | 1868 | |
de190aef | 1869 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1870 | return -ESTALE; |
de190aef | 1871 | } |
3fbf9cbb | 1872 | |
14a65d65 LP |
1873 | if (ret) |
1874 | *ret = le64toh(o->entry.monotonic); | |
1875 | ||
de190aef | 1876 | return 0; |
3fbf9cbb LP |
1877 | } |
1878 | ||
362a3f81 LP |
1879 | static bool field_is_valid(const char *field) { |
1880 | const char *p; | |
1881 | ||
1882 | assert(field); | |
1883 | ||
1884 | if (isempty(field)) | |
1885 | return false; | |
1886 | ||
1887 | if (startswith(field, "__")) | |
1888 | return false; | |
1889 | ||
1890 | for (p = field; *p; p++) { | |
1891 | ||
1892 | if (*p == '_') | |
1893 | continue; | |
1894 | ||
1895 | if (*p >= 'A' && *p <= 'Z') | |
1896 | continue; | |
1897 | ||
1898 | if (*p >= '0' && *p <= '9') | |
1899 | continue; | |
1900 | ||
1901 | return false; | |
1902 | } | |
1903 | ||
1904 | return true; | |
1905 | } | |
1906 | ||
a5344d2c | 1907 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1908 | JournalFile *f; |
1909 | uint64_t i, n; | |
1910 | size_t field_length; | |
1911 | int r; | |
1912 | Object *o; | |
1913 | ||
1ae464e0 TA |
1914 | assert_return(j, -EINVAL); |
1915 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1916 | assert_return(field, -EINVAL); | |
1917 | assert_return(data, -EINVAL); | |
1918 | assert_return(size, -EINVAL); | |
1919 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
1920 | |
1921 | f = j->current_file; | |
1922 | if (!f) | |
de190aef | 1923 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1924 | |
1925 | if (f->current_offset <= 0) | |
de190aef | 1926 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1927 | |
de190aef | 1928 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1929 | if (r < 0) |
1930 | return r; | |
1931 | ||
1932 | field_length = strlen(field); | |
1933 | ||
1934 | n = journal_file_entry_n_items(o); | |
1935 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1936 | uint64_t p, l; |
1937 | le64_t le_hash; | |
3fbf9cbb | 1938 | size_t t; |
1ec7120e | 1939 | int compression; |
3fbf9cbb LP |
1940 | |
1941 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1942 | le_hash = o->entry.items[i].hash; |
de190aef | 1943 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1944 | if (r < 0) |
1945 | return r; | |
1946 | ||
de190aef | 1947 | if (le_hash != o->data.hash) |
de7b95cd LP |
1948 | return -EBADMSG; |
1949 | ||
3fbf9cbb LP |
1950 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1951 | ||
1ec7120e | 1952 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
1953 | if (compression) { |
1954 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
2aaec9b4 | 1955 | r = decompress_startswith(compression, |
3b1a55e1 ZJS |
1956 | o->data.payload, l, |
1957 | &f->compress_buffer, &f->compress_buffer_size, | |
2aaec9b4 ZJS |
1958 | field, field_length, '='); |
1959 | if (r < 0) | |
1960 | log_debug_errno(r, "Cannot decompress %s object of length %zu at offset "OFSfmt": %m", | |
1961 | object_compressed_to_string(compression), l, p); | |
1962 | else if (r > 0) { | |
3b1a55e1 | 1963 | |
fa1c4b51 | 1964 | size_t rsize; |
3b1a55e1 ZJS |
1965 | |
1966 | r = decompress_blob(compression, | |
1967 | o->data.payload, l, | |
1968 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
1969 | j->data_threshold); | |
1970 | if (r < 0) | |
1971 | return r; | |
807e17f0 | 1972 | |
3b1a55e1 ZJS |
1973 | *data = f->compress_buffer; |
1974 | *size = (size_t) rsize; | |
807e17f0 | 1975 | |
3b1a55e1 ZJS |
1976 | return 0; |
1977 | } | |
1978 | #else | |
1979 | return -EPROTONOSUPPORT; | |
1980 | #endif | |
807e17f0 LP |
1981 | } else if (l >= field_length+1 && |
1982 | memcmp(o->data.payload, field, field_length) == 0 && | |
1983 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1984 | |
161e54f8 | 1985 | t = (size_t) l; |
3fbf9cbb | 1986 | |
161e54f8 LP |
1987 | if ((uint64_t) t != l) |
1988 | return -E2BIG; | |
3fbf9cbb | 1989 | |
161e54f8 LP |
1990 | *data = o->data.payload; |
1991 | *size = t; | |
3fbf9cbb | 1992 | |
99613ec5 | 1993 | return 0; |
161e54f8 | 1994 | } |
3fbf9cbb | 1995 | |
de190aef | 1996 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1997 | if (r < 0) |
1998 | return r; | |
3fbf9cbb LP |
1999 | } |
2000 | ||
de190aef | 2001 | return -ENOENT; |
3fbf9cbb LP |
2002 | } |
2003 | ||
93b73b06 | 2004 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2005 | size_t t; |
2006 | uint64_t l; | |
3b1a55e1 | 2007 | int compression; |
3c1668da LP |
2008 | |
2009 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2010 | t = (size_t) l; | |
2011 | ||
2012 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2013 | if ((uint64_t) t != l) | |
2014 | return -E2BIG; | |
2015 | ||
1ec7120e ZJS |
2016 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2017 | if (compression) { | |
3b1a55e1 | 2018 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 2019 | size_t rsize; |
3b1a55e1 | 2020 | int r; |
3c1668da | 2021 | |
1ec7120e ZJS |
2022 | r = decompress_blob(compression, |
2023 | o->data.payload, l, &f->compress_buffer, | |
2024 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2025 | if (r < 0) | |
2026 | return r; | |
3c1668da LP |
2027 | |
2028 | *data = f->compress_buffer; | |
2029 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2030 | #else |
2031 | return -EPROTONOSUPPORT; | |
2032 | #endif | |
3c1668da LP |
2033 | } else { |
2034 | *data = o->data.payload; | |
2035 | *size = t; | |
2036 | } | |
2037 | ||
2038 | return 0; | |
2039 | } | |
2040 | ||
a5344d2c | 2041 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2042 | JournalFile *f; |
3c1668da | 2043 | uint64_t p, n; |
4fd052ae | 2044 | le64_t le_hash; |
3fbf9cbb LP |
2045 | int r; |
2046 | Object *o; | |
2047 | ||
1ae464e0 TA |
2048 | assert_return(j, -EINVAL); |
2049 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2050 | assert_return(data, -EINVAL); | |
2051 | assert_return(size, -EINVAL); | |
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 | ||
2064 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2065 | if (j->current_field >= n) |
3fbf9cbb LP |
2066 | return 0; |
2067 | ||
7210bfb3 | 2068 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2069 | le_hash = o->entry.items[j->current_field].hash; |
2070 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2071 | if (r < 0) |
2072 | return r; | |
2073 | ||
de190aef | 2074 | if (le_hash != o->data.hash) |
de7b95cd LP |
2075 | return -EBADMSG; |
2076 | ||
93b73b06 | 2077 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2078 | if (r < 0) |
2079 | return r; | |
3fbf9cbb | 2080 | |
7210bfb3 | 2081 | j->current_field ++; |
3fbf9cbb LP |
2082 | |
2083 | return 1; | |
2084 | } | |
c2373f84 | 2085 | |
a5344d2c LP |
2086 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2087 | if (!j) | |
2088 | return; | |
8725d60a LP |
2089 | |
2090 | j->current_field = 0; | |
c2373f84 | 2091 | } |
50f20cfd | 2092 | |
a5344d2c | 2093 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2094 | int r; |
2095 | ||
1ae464e0 TA |
2096 | assert_return(j, -EINVAL); |
2097 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2098 | |
a963990f LP |
2099 | if (j->inotify_fd >= 0) |
2100 | return j->inotify_fd; | |
2101 | ||
2102 | r = allocate_inotify(j); | |
2103 | if (r < 0) | |
2104 | return r; | |
2105 | ||
2106 | /* Iterate through all dirs again, to add them to the | |
2107 | * inotify */ | |
5302ebe1 ZJS |
2108 | if (j->no_new_files) |
2109 | r = add_current_paths(j); | |
2110 | else if (j->path) | |
d617408e | 2111 | r = add_root_directory(j, j->path, true); |
7827b1a1 | 2112 | else |
89739579 | 2113 | r = add_search_paths(j); |
a963990f LP |
2114 | if (r < 0) |
2115 | return r; | |
2116 | ||
50f20cfd LP |
2117 | return j->inotify_fd; |
2118 | } | |
2119 | ||
ee531d94 LP |
2120 | _public_ int sd_journal_get_events(sd_journal *j) { |
2121 | int fd; | |
2122 | ||
1ae464e0 TA |
2123 | assert_return(j, -EINVAL); |
2124 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2125 | |
2126 | fd = sd_journal_get_fd(j); | |
2127 | if (fd < 0) | |
2128 | return fd; | |
2129 | ||
2130 | return POLLIN; | |
2131 | } | |
2132 | ||
39c155ea LP |
2133 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2134 | int fd; | |
2135 | ||
1ae464e0 TA |
2136 | assert_return(j, -EINVAL); |
2137 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2138 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2139 | |
2140 | fd = sd_journal_get_fd(j); | |
2141 | if (fd < 0) | |
2142 | return fd; | |
2143 | ||
2144 | if (!j->on_network) { | |
2145 | *timeout_usec = (uint64_t) -1; | |
2146 | return 0; | |
2147 | } | |
2148 | ||
2149 | /* If we are on the network we need to regularly check for | |
2150 | * changes manually */ | |
2151 | ||
2152 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2153 | return 1; | |
2154 | } | |
2155 | ||
50f20cfd | 2156 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2157 | Directory *d; |
50f20cfd LP |
2158 | |
2159 | assert(j); | |
2160 | assert(e); | |
2161 | ||
2162 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2163 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2164 | if (d) { | |
2165 | sd_id128_t id; | |
50f20cfd | 2166 | |
de2c3907 LP |
2167 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2168 | (endswith(e->name, ".journal") || | |
2169 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2170 | |
2171 | /* Event for a journal file */ | |
2172 | ||
d617408e LP |
2173 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2174 | (void) add_file(j, d->path, e->name); | |
2175 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) | |
2176 | remove_file(j, d->path, e->name); | |
50f20cfd | 2177 | |
a963990f | 2178 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2179 | |
a963990f | 2180 | /* Event for a subdirectory */ |
50f20cfd | 2181 | |
b2b46f91 TA |
2182 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2183 | remove_directory(j, d); | |
50f20cfd | 2184 | |
a963990f | 2185 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2186 | |
a963990f | 2187 | /* Event for root directory */ |
50f20cfd | 2188 | |
d617408e LP |
2189 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2190 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2191 | } |
2192 | ||
2193 | return; | |
2194 | } | |
2195 | ||
2196 | if (e->mask & IN_IGNORED) | |
2197 | return; | |
2198 | ||
d617408e | 2199 | log_debug("Unknown inotify event."); |
50f20cfd LP |
2200 | } |
2201 | ||
a963990f LP |
2202 | static int determine_change(sd_journal *j) { |
2203 | bool b; | |
2204 | ||
2205 | assert(j); | |
2206 | ||
2207 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2208 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2209 | ||
2210 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2211 | } | |
2212 | ||
a5344d2c | 2213 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2214 | bool got_something = false; |
50f20cfd | 2215 | |
1ae464e0 TA |
2216 | assert_return(j, -EINVAL); |
2217 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2218 | |
39c155ea LP |
2219 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2220 | ||
50f20cfd | 2221 | for (;;) { |
0254e944 | 2222 | union inotify_event_buffer buffer; |
50f20cfd LP |
2223 | struct inotify_event *e; |
2224 | ssize_t l; | |
2225 | ||
0254e944 | 2226 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2227 | if (l < 0) { |
a963990f LP |
2228 | if (errno == EAGAIN || errno == EINTR) |
2229 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2230 | |
2231 | return -errno; | |
2232 | } | |
2233 | ||
a963990f LP |
2234 | got_something = true; |
2235 | ||
f7c1ad4f | 2236 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2237 | process_inotify_event(j, e); |
50f20cfd LP |
2238 | } |
2239 | } | |
6ad1d1c3 | 2240 | |
e02d1cf7 | 2241 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2242 | int r; |
39c155ea | 2243 | uint64_t t; |
e02d1cf7 | 2244 | |
1ae464e0 TA |
2245 | assert_return(j, -EINVAL); |
2246 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2247 | |
a963990f LP |
2248 | if (j->inotify_fd < 0) { |
2249 | ||
2250 | /* This is the first invocation, hence create the | |
2251 | * inotify watch */ | |
2252 | r = sd_journal_get_fd(j); | |
2253 | if (r < 0) | |
2254 | return r; | |
2255 | ||
2256 | /* The journal might have changed since the context | |
2257 | * object was created and we weren't watching before, | |
2258 | * hence don't wait for anything, and return | |
2259 | * immediately. */ | |
2260 | return determine_change(j); | |
2261 | } | |
2262 | ||
39c155ea LP |
2263 | r = sd_journal_get_timeout(j, &t); |
2264 | if (r < 0) | |
2265 | return r; | |
2266 | ||
2267 | if (t != (uint64_t) -1) { | |
2268 | usec_t n; | |
2269 | ||
2270 | n = now(CLOCK_MONOTONIC); | |
2271 | t = t > n ? t - n : 0; | |
85210bff | 2272 | |
39c155ea LP |
2273 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2274 | timeout_usec = t; | |
85210bff LP |
2275 | } |
2276 | ||
a963990f LP |
2277 | do { |
2278 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2279 | } while (r == -EINTR); | |
e02d1cf7 LP |
2280 | |
2281 | if (r < 0) | |
2282 | return r; | |
2283 | ||
a963990f | 2284 | return sd_journal_process(j); |
e02d1cf7 LP |
2285 | } |
2286 | ||
08984293 LP |
2287 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2288 | Iterator i; | |
2289 | JournalFile *f; | |
2290 | bool first = true; | |
581483bf | 2291 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2292 | int r; |
2293 | ||
1ae464e0 TA |
2294 | assert_return(j, -EINVAL); |
2295 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2296 | assert_return(from || to, -EINVAL); | |
2297 | assert_return(from != to, -EINVAL); | |
08984293 | 2298 | |
c1f906bd | 2299 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2300 | usec_t fr, t; |
2301 | ||
2302 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2303 | if (r == -ENOENT) |
2304 | continue; | |
08984293 LP |
2305 | if (r < 0) |
2306 | return r; | |
2307 | if (r == 0) | |
2308 | continue; | |
2309 | ||
2310 | if (first) { | |
581483bf LP |
2311 | fmin = fr; |
2312 | tmax = t; | |
08984293 LP |
2313 | first = false; |
2314 | } else { | |
581483bf LP |
2315 | fmin = MIN(fr, fmin); |
2316 | tmax = MAX(t, tmax); | |
08984293 LP |
2317 | } |
2318 | } | |
2319 | ||
581483bf LP |
2320 | if (from) |
2321 | *from = fmin; | |
2322 | if (to) | |
2323 | *to = tmax; | |
2324 | ||
08984293 LP |
2325 | return first ? 0 : 1; |
2326 | } | |
2327 | ||
2328 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2329 | Iterator i; | |
2330 | JournalFile *f; | |
1651e2c6 | 2331 | bool found = false; |
08984293 LP |
2332 | int r; |
2333 | ||
1ae464e0 TA |
2334 | assert_return(j, -EINVAL); |
2335 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2336 | assert_return(from || to, -EINVAL); | |
2337 | assert_return(from != to, -EINVAL); | |
08984293 | 2338 | |
c1f906bd | 2339 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2340 | usec_t fr, t; |
2341 | ||
2342 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2343 | if (r == -ENOENT) |
2344 | continue; | |
08984293 LP |
2345 | if (r < 0) |
2346 | return r; | |
2347 | if (r == 0) | |
2348 | continue; | |
2349 | ||
1651e2c6 | 2350 | if (found) { |
08984293 | 2351 | if (from) |
1651e2c6 | 2352 | *from = MIN(fr, *from); |
08984293 | 2353 | if (to) |
1651e2c6 | 2354 | *to = MAX(t, *to); |
08984293 LP |
2355 | } else { |
2356 | if (from) | |
1651e2c6 | 2357 | *from = fr; |
08984293 | 2358 | if (to) |
1651e2c6 ZJS |
2359 | *to = t; |
2360 | found = true; | |
08984293 LP |
2361 | } |
2362 | } | |
2363 | ||
1651e2c6 | 2364 | return found; |
08984293 LP |
2365 | } |
2366 | ||
dca6219e LP |
2367 | void journal_print_header(sd_journal *j) { |
2368 | Iterator i; | |
2369 | JournalFile *f; | |
2370 | bool newline = false; | |
2371 | ||
2372 | assert(j); | |
2373 | ||
c1f906bd | 2374 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2375 | if (newline) |
2376 | putchar('\n'); | |
2377 | else | |
2378 | newline = true; | |
2379 | ||
2380 | journal_file_print_header(f); | |
2381 | } | |
2382 | } | |
08984293 | 2383 | |
a1a03e30 LP |
2384 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2385 | Iterator i; | |
2386 | JournalFile *f; | |
2387 | uint64_t sum = 0; | |
2388 | ||
1ae464e0 TA |
2389 | assert_return(j, -EINVAL); |
2390 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2391 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2392 | |
c1f906bd | 2393 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2394 | struct stat st; |
2395 | ||
2396 | if (fstat(f->fd, &st) < 0) | |
2397 | return -errno; | |
2398 | ||
2399 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2400 | } | |
2401 | ||
2402 | *bytes = sum; | |
2403 | return 0; | |
2404 | } | |
2405 | ||
3c1668da LP |
2406 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2407 | char *f; | |
2408 | ||
1ae464e0 TA |
2409 | assert_return(j, -EINVAL); |
2410 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2411 | assert_return(!isempty(field), -EINVAL); | |
2412 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2413 | |
2414 | f = strdup(field); | |
2415 | if (!f) | |
2416 | return -ENOMEM; | |
2417 | ||
2418 | free(j->unique_field); | |
2419 | j->unique_field = f; | |
2420 | j->unique_file = NULL; | |
2421 | j->unique_offset = 0; | |
360af4cf | 2422 | j->unique_file_lost = false; |
3c1668da LP |
2423 | |
2424 | return 0; | |
2425 | } | |
2426 | ||
2427 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2428 | size_t k; |
19a2bd80 | 2429 | |
1ae464e0 TA |
2430 | assert_return(j, -EINVAL); |
2431 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2432 | assert_return(data, -EINVAL); | |
2433 | assert_return(l, -EINVAL); | |
2434 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2435 | |
3c1668da | 2436 | k = strlen(j->unique_field); |
19a2bd80 | 2437 | |
3c1668da | 2438 | if (!j->unique_file) { |
360af4cf ZJS |
2439 | if (j->unique_file_lost) |
2440 | return 0; | |
2441 | ||
c1f906bd | 2442 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2443 | if (!j->unique_file) |
2444 | return 0; | |
360af4cf | 2445 | |
3c1668da LP |
2446 | j->unique_offset = 0; |
2447 | } | |
19a2bd80 | 2448 | |
3c1668da LP |
2449 | for (;;) { |
2450 | JournalFile *of; | |
2451 | Iterator i; | |
ae97089d | 2452 | Object *o; |
3c1668da LP |
2453 | const void *odata; |
2454 | size_t ol; | |
2455 | bool found; | |
ae97089d | 2456 | int r; |
3c1668da | 2457 | |
bdc02927 | 2458 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2459 | if (j->unique_offset == 0) { |
2460 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2461 | if (r < 0) | |
2462 | return r; | |
2463 | ||
2464 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2465 | } else { | |
2466 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2467 | if (r < 0) | |
2468 | return r; | |
2469 | ||
2470 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2471 | } | |
2472 | ||
2473 | /* We reached the end of the list? Then start again, with the next file */ | |
2474 | if (j->unique_offset == 0) { | |
c1f906bd | 2475 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2476 | if (!j->unique_file) |
3c1668da LP |
2477 | return 0; |
2478 | ||
3c1668da LP |
2479 | continue; |
2480 | } | |
2481 | ||
d05089d8 MS |
2482 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2483 | * instead, so that we can look at this data object at the same | |
3c1668da | 2484 | * time as one on another file */ |
d05089d8 | 2485 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2486 | if (r < 0) |
2487 | return r; | |
2488 | ||
2489 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2490 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2491 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2492 | j->unique_file->path, j->unique_offset, |
2493 | o->object.type, OBJECT_DATA); | |
3c1668da | 2494 | return -EBADMSG; |
ae97089d ZJS |
2495 | } |
2496 | ||
93b73b06 | 2497 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2498 | if (r < 0) |
2499 | return r; | |
2500 | ||
0f99f74a ZJS |
2501 | /* Check if we have at least the field name and "=". */ |
2502 | if (ol <= k) { | |
2503 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2504 | j->unique_file->path, j->unique_offset, | |
2505 | ol, k + 1); | |
2506 | return -EBADMSG; | |
2507 | } | |
2508 | ||
2509 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2510 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2511 | j->unique_file->path, j->unique_offset, | |
2512 | j->unique_field); | |
2513 | return -EBADMSG; | |
2514 | } | |
2515 | ||
3c1668da LP |
2516 | /* OK, now let's see if we already returned this data |
2517 | * object by checking if it exists in the earlier | |
2518 | * traversed files. */ | |
2519 | found = false; | |
c1f906bd | 2520 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2521 | if (of == j->unique_file) |
2522 | break; | |
2523 | ||
ed71f956 LP |
2524 | /* Skip this file it didn't have any fields indexed */ |
2525 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2526 | continue; |
2527 | ||
ed71f956 | 2528 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); |
3c1668da LP |
2529 | if (r < 0) |
2530 | return r; | |
ed71f956 | 2531 | if (r > 0) { |
3c1668da | 2532 | found = true; |
ed71f956 LP |
2533 | break; |
2534 | } | |
3c1668da LP |
2535 | } |
2536 | ||
06cc69d4 JJ |
2537 | if (found) |
2538 | continue; | |
2539 | ||
93b73b06 | 2540 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2541 | if (r < 0) |
2542 | return r; | |
2543 | ||
2544 | return 1; | |
2545 | } | |
2546 | } | |
2547 | ||
115646c7 | 2548 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2549 | if (!j) |
2550 | return; | |
2551 | ||
2552 | j->unique_file = NULL; | |
2553 | j->unique_offset = 0; | |
360af4cf | 2554 | j->unique_file_lost = false; |
3c1668da | 2555 | } |
85210bff | 2556 | |
eb86030e LP |
2557 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
2558 | int r; | |
2559 | ||
2560 | assert_return(j, -EINVAL); | |
2561 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2562 | assert_return(field, -EINVAL); | |
2563 | ||
2564 | if (!j->fields_file) { | |
2565 | if (j->fields_file_lost) | |
2566 | return 0; | |
2567 | ||
2568 | j->fields_file = ordered_hashmap_first(j->files); | |
2569 | if (!j->fields_file) | |
2570 | return 0; | |
2571 | ||
2572 | j->fields_hash_table_index = 0; | |
2573 | j->fields_offset = 0; | |
2574 | } | |
2575 | ||
2576 | for (;;) { | |
2577 | JournalFile *f, *of; | |
2578 | Iterator i; | |
2579 | uint64_t m; | |
2580 | Object *o; | |
2581 | size_t sz; | |
2582 | bool found; | |
2583 | ||
2584 | f = j->fields_file; | |
2585 | ||
2586 | if (j->fields_offset == 0) { | |
2587 | bool eof = false; | |
2588 | ||
2589 | /* We are not yet positioned at any field. Let's pick the first one */ | |
2590 | r = journal_file_map_field_hash_table(f); | |
2591 | if (r < 0) | |
2592 | return r; | |
2593 | ||
2594 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
2595 | for (;;) { | |
2596 | if (j->fields_hash_table_index >= m) { | |
2597 | /* Reached the end of the hash table, go to the next file. */ | |
2598 | eof = true; | |
2599 | break; | |
2600 | } | |
2601 | ||
2602 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
2603 | ||
2604 | if (j->fields_offset != 0) | |
2605 | break; | |
2606 | ||
2607 | /* Empty hash table bucket, go to next one */ | |
2608 | j->fields_hash_table_index++; | |
2609 | } | |
2610 | ||
2611 | if (eof) { | |
2612 | /* Proceed with next file */ | |
2613 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
2614 | if (!j->fields_file) { | |
2615 | *field = NULL; | |
2616 | return 0; | |
2617 | } | |
2618 | ||
2619 | j->fields_offset = 0; | |
2620 | j->fields_hash_table_index = 0; | |
2621 | continue; | |
2622 | } | |
2623 | ||
2624 | } else { | |
2625 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
2626 | ||
2627 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
2628 | if (r < 0) | |
2629 | return r; | |
2630 | ||
2631 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
2632 | if (j->fields_offset == 0) { | |
2633 | /* Reached the end of the hash table chain */ | |
2634 | j->fields_hash_table_index++; | |
2635 | continue; | |
2636 | } | |
2637 | } | |
2638 | ||
1f133e0d | 2639 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
2640 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
2641 | if (r < 0) | |
2642 | return r; | |
2643 | ||
2644 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
2645 | if (o->object.type != OBJECT_FIELD) { | |
2646 | log_debug("%s:offset " OFSfmt ": object has type %i, expected %i", f->path, j->fields_offset, o->object.type, OBJECT_FIELD); | |
2647 | return -EBADMSG; | |
2648 | } | |
2649 | ||
2650 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
2651 | ||
2652 | /* Let's see if we already returned this field name before. */ | |
2653 | found = false; | |
2654 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { | |
2655 | if (of == f) | |
2656 | break; | |
2657 | ||
2658 | /* Skip this file it didn't have any fields indexed */ | |
2659 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
2660 | continue; | |
2661 | ||
2662 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, le64toh(o->field.hash), NULL, NULL); | |
2663 | if (r < 0) | |
2664 | return r; | |
2665 | if (r > 0) { | |
2666 | found = true; | |
2667 | break; | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | if (found) | |
2672 | continue; | |
2673 | ||
2674 | /* Check if this is really a valid string containing no NUL byte */ | |
2675 | if (memchr(o->field.payload, 0, sz)) | |
2676 | return -EBADMSG; | |
2677 | ||
2678 | if (sz > j->data_threshold) | |
2679 | sz = j->data_threshold; | |
2680 | ||
2681 | if (!GREEDY_REALLOC(j->fields_buffer, j->fields_buffer_allocated, sz + 1)) | |
2682 | return -ENOMEM; | |
2683 | ||
2684 | memcpy(j->fields_buffer, o->field.payload, sz); | |
2685 | j->fields_buffer[sz] = 0; | |
2686 | ||
2687 | if (!field_is_valid(j->fields_buffer)) | |
2688 | return -EBADMSG; | |
2689 | ||
2690 | *field = j->fields_buffer; | |
2691 | return 1; | |
2692 | } | |
2693 | } | |
2694 | ||
2695 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
2696 | if (!j) | |
2697 | return; | |
2698 | ||
2699 | j->fields_file = NULL; | |
2700 | j->fields_hash_table_index = 0; | |
2701 | j->fields_offset = 0; | |
2702 | j->fields_file_lost = false; | |
2703 | } | |
2704 | ||
85210bff | 2705 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
2706 | assert_return(j, -EINVAL); |
2707 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2708 | |
2709 | return !j->on_network; | |
2710 | } | |
d4205751 LP |
2711 | |
2712 | static char *lookup_field(const char *field, void *userdata) { | |
2713 | sd_journal *j = userdata; | |
2714 | const void *data; | |
2715 | size_t size, d; | |
2716 | int r; | |
2717 | ||
2718 | assert(field); | |
2719 | assert(j); | |
2720 | ||
2721 | r = sd_journal_get_data(j, field, &data, &size); | |
2722 | if (r < 0 || | |
2723 | size > REPLACE_VAR_MAX) | |
2724 | return strdup(field); | |
2725 | ||
2726 | d = strlen(field) + 1; | |
2727 | ||
2728 | return strndup((const char*) data + d, size - d); | |
2729 | } | |
2730 | ||
2731 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2732 | const void *data; | |
2733 | size_t size; | |
2734 | sd_id128_t id; | |
2735 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2736 | char *t; | |
2737 | int r; | |
2738 | ||
1ae464e0 TA |
2739 | assert_return(j, -EINVAL); |
2740 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2741 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2742 | |
2743 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2744 | if (r < 0) | |
2745 | return r; | |
2746 | ||
2747 | cid = strndup((const char*) data + 11, size - 11); | |
2748 | if (!cid) | |
2749 | return -ENOMEM; | |
2750 | ||
2751 | r = sd_id128_from_string(cid, &id); | |
2752 | if (r < 0) | |
2753 | return r; | |
2754 | ||
844ec79b | 2755 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2756 | if (r < 0) |
2757 | return r; | |
2758 | ||
2759 | t = replace_var(text, lookup_field, j); | |
2760 | if (!t) | |
2761 | return -ENOMEM; | |
2762 | ||
2763 | *ret = t; | |
2764 | return 0; | |
2765 | } | |
8f1e860f LP |
2766 | |
2767 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2768 | assert_return(ret, -EINVAL); |
8f1e860f | 2769 | |
844ec79b | 2770 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2771 | } |
93b73b06 LP |
2772 | |
2773 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2774 | assert_return(j, -EINVAL); |
2775 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2776 | |
2777 | j->data_threshold = sz; | |
2778 | return 0; | |
2779 | } | |
2780 | ||
2781 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2782 | assert_return(j, -EINVAL); |
2783 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2784 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2785 | |
2786 | *sz = j->data_threshold; | |
2787 | return 0; | |
2788 | } | |
39fd5b08 JS |
2789 | |
2790 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
2791 | assert_return(j, -EINVAL); | |
2792 | ||
2793 | return j->has_runtime_files; | |
2794 | } | |
2795 | ||
2796 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
2797 | assert_return(j, -EINVAL); | |
2798 | ||
2799 | return j->has_persistent_files; | |
2800 | } |