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87d2c1ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
87d2c1ff LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
87d2c1ff | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
87d2c1ff | 22 | #include <errno.h> |
87d2c1ff | 23 | #include <fcntl.h> |
3fbf9cbb | 24 | #include <stddef.h> |
50f20cfd LP |
25 | #include <unistd.h> |
26 | #include <sys/inotify.h> | |
e02d1cf7 | 27 | #include <sys/poll.h> |
85210bff LP |
28 | #include <sys/vfs.h> |
29 | #include <linux/magic.h> | |
87d2c1ff LP |
30 | |
31 | #include "sd-journal.h" | |
32 | #include "journal-def.h" | |
cec736d2 | 33 | #include "journal-file.h" |
260a2be4 | 34 | #include "hashmap.h" |
cec736d2 | 35 | #include "list.h" |
5302ebe1 | 36 | #include "strv.h" |
9eb977db | 37 | #include "path-util.h" |
de7b95cd | 38 | #include "lookup3.h" |
807e17f0 | 39 | #include "compress.h" |
cf244689 | 40 | #include "journal-internal.h" |
85210bff | 41 | #include "missing.h" |
d4205751 LP |
42 | #include "catalog.h" |
43 | #include "replace-var.h" | |
b6741478 | 44 | #include "fileio.h" |
87d2c1ff | 45 | |
cab8ac60 LP |
46 | #define JOURNAL_FILES_MAX 1024 |
47 | ||
85210bff LP |
48 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
49 | ||
d4205751 LP |
50 | #define REPLACE_VAR_MAX 256 |
51 | ||
93b73b06 LP |
52 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
53 | ||
a9a245c1 ZJS |
54 | static void remove_file_real(sd_journal *j, JournalFile *f); |
55 | ||
a65f06bb ZJS |
56 | static bool journal_pid_changed(sd_journal *j) { |
57 | assert(j); | |
58 | ||
59 | /* We don't support people creating a journal object and | |
60 | * keeping it around over a fork(). Let's complain. */ | |
61 | ||
62 | return j->original_pid != getpid(); | |
63 | } | |
64 | ||
6fe391c5 ZJS |
65 | /* We return an error here only if we didn't manage to |
66 | memorize the real error. */ | |
3ac251b8 LP |
67 | static int set_put_error(sd_journal *j, int r) { |
68 | int k; | |
69 | ||
6fe391c5 ZJS |
70 | if (r >= 0) |
71 | return r; | |
72 | ||
d5099efc | 73 | k = set_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
74 | if (k < 0) |
75 | return k; | |
76 | ||
77 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
78 | } |
79 | ||
de190aef | 80 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
81 | Iterator i; |
82 | JournalFile *f; | |
83 | ||
84 | assert(j); | |
85 | ||
86 | j->current_file = NULL; | |
87 | j->current_field = 0; | |
88 | ||
c1f906bd | 89 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 90 | journal_file_reset_location(f); |
8f9b6cd9 LP |
91 | } |
92 | ||
de190aef LP |
93 | static void reset_location(sd_journal *j) { |
94 | assert(j); | |
95 | ||
96 | detach_location(j); | |
97 | zero(j->current_location); | |
98 | } | |
99 | ||
a87247dd | 100 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 101 | assert(l); |
a87247dd | 102 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
103 | assert(f); |
104 | assert(o->object.type == OBJECT_ENTRY); | |
105 | ||
a87247dd | 106 | l->type = type; |
de190aef LP |
107 | l->seqnum = le64toh(o->entry.seqnum); |
108 | l->seqnum_id = f->header->seqnum_id; | |
109 | l->realtime = le64toh(o->entry.realtime); | |
110 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 111 | l->boot_id = o->entry.boot_id; |
de190aef LP |
112 | l->xor_hash = le64toh(o->entry.xor_hash); |
113 | ||
114 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
115 | } | |
116 | ||
1eb6332d | 117 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
118 | assert(j); |
119 | assert(f); | |
120 | assert(o); | |
121 | ||
1eb6332d | 122 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
123 | |
124 | j->current_file = f; | |
125 | j->current_field = 0; | |
126 | ||
6573ef05 MS |
127 | /* Let f know its candidate entry was picked. */ |
128 | assert(f->location_type == LOCATION_SEEK); | |
129 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
130 | } |
131 | ||
cbdca852 LP |
132 | static int match_is_valid(const void *data, size_t size) { |
133 | const char *b, *p; | |
134 | ||
135 | assert(data); | |
136 | ||
137 | if (size < 2) | |
138 | return false; | |
139 | ||
140 | if (startswith(data, "__")) | |
141 | return false; | |
142 | ||
143 | b = data; | |
144 | for (p = b; p < b + size; p++) { | |
145 | ||
146 | if (*p == '=') | |
147 | return p > b; | |
148 | ||
149 | if (*p == '_') | |
150 | continue; | |
151 | ||
152 | if (*p >= 'A' && *p <= 'Z') | |
153 | continue; | |
154 | ||
155 | if (*p >= '0' && *p <= '9') | |
156 | continue; | |
157 | ||
158 | return false; | |
159 | } | |
160 | ||
161 | return false; | |
162 | } | |
163 | ||
164 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
165 | const uint8_t *a = _a, *b = _b; |
166 | size_t j; | |
de190aef LP |
167 | |
168 | for (j = 0; j < s && j < t; j++) { | |
169 | ||
de190aef | 170 | if (a[j] != b[j]) |
cbdca852 | 171 | return false; |
de190aef | 172 | |
cbdca852 LP |
173 | if (a[j] == '=') |
174 | return true; | |
de190aef LP |
175 | } |
176 | ||
bc302926 | 177 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
178 | } |
179 | ||
180 | static Match *match_new(Match *p, MatchType t) { | |
181 | Match *m; | |
182 | ||
183 | m = new0(Match, 1); | |
184 | if (!m) | |
185 | return NULL; | |
186 | ||
187 | m->type = t; | |
188 | ||
189 | if (p) { | |
190 | m->parent = p; | |
71fda00f | 191 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
192 | } |
193 | ||
194 | return m; | |
195 | } | |
196 | ||
197 | static void match_free(Match *m) { | |
198 | assert(m); | |
199 | ||
200 | while (m->matches) | |
201 | match_free(m->matches); | |
202 | ||
203 | if (m->parent) | |
71fda00f | 204 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
205 | |
206 | free(m->data); | |
207 | free(m); | |
208 | } | |
209 | ||
210 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 211 | if (!m || m->matches) |
cbdca852 LP |
212 | return; |
213 | ||
214 | match_free(m); | |
de190aef LP |
215 | } |
216 | ||
a5344d2c | 217 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 218 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 219 | le64_t le_hash; |
87d2c1ff | 220 | |
1ae464e0 TA |
221 | assert_return(j, -EINVAL); |
222 | assert_return(!journal_pid_changed(j), -ECHILD); | |
223 | assert_return(data, -EINVAL); | |
cbdca852 LP |
224 | |
225 | if (size == 0) | |
226 | size = strlen(data); | |
227 | ||
1ae464e0 | 228 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 229 | |
cd34b3c6 HH |
230 | /* level 0: AND term |
231 | * level 1: OR terms | |
232 | * level 2: AND terms | |
233 | * level 3: OR terms | |
234 | * level 4: concrete matches */ | |
cbdca852 LP |
235 | |
236 | if (!j->level0) { | |
cd34b3c6 | 237 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
238 | if (!j->level0) |
239 | return -ENOMEM; | |
240 | } | |
241 | ||
242 | if (!j->level1) { | |
cd34b3c6 | 243 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
244 | if (!j->level1) |
245 | return -ENOMEM; | |
246 | } | |
247 | ||
cd34b3c6 HH |
248 | if (!j->level2) { |
249 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
250 | if (!j->level2) | |
251 | return -ENOMEM; | |
252 | } | |
253 | ||
254 | assert(j->level0->type == MATCH_AND_TERM); | |
255 | assert(j->level1->type == MATCH_OR_TERM); | |
256 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 257 | |
de190aef LP |
258 | le_hash = htole64(hash64(data, size)); |
259 | ||
cd34b3c6 HH |
260 | LIST_FOREACH(matches, l3, j->level2->matches) { |
261 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 262 | |
cd34b3c6 HH |
263 | LIST_FOREACH(matches, l4, l3->matches) { |
264 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 265 | |
cbdca852 LP |
266 | /* Exactly the same match already? Then ignore |
267 | * this addition */ | |
cd34b3c6 HH |
268 | if (l4->le_hash == le_hash && |
269 | l4->size == size && | |
270 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
271 | return 0; |
272 | ||
273 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
274 | if (same_field(data, size, l4->data, l4->size)) { |
275 | add_here = l3; | |
cbdca852 LP |
276 | break; |
277 | } | |
278 | } | |
279 | ||
280 | if (add_here) | |
281 | break; | |
de190aef LP |
282 | } |
283 | ||
cbdca852 | 284 | if (!add_here) { |
cd34b3c6 | 285 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
286 | if (!add_here) |
287 | goto fail; | |
288 | } | |
289 | ||
290 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 291 | if (!m) |
cbdca852 | 292 | goto fail; |
87d2c1ff | 293 | |
cbdca852 | 294 | m->le_hash = le_hash; |
1cc101f1 | 295 | m->size = size; |
cbdca852 LP |
296 | m->data = memdup(data, size); |
297 | if (!m->data) | |
298 | goto fail; | |
299 | ||
300 | detach_location(j); | |
301 | ||
302 | return 0; | |
303 | ||
304 | fail: | |
c5a10d9c ZJS |
305 | match_free_if_empty(add_here); |
306 | match_free_if_empty(j->level2); | |
307 | match_free_if_empty(j->level1); | |
308 | match_free_if_empty(j->level0); | |
cbdca852 LP |
309 | |
310 | return -ENOMEM; | |
311 | } | |
312 | ||
cd34b3c6 | 313 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
314 | assert_return(j, -EINVAL); |
315 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 316 | |
cbdca852 LP |
317 | if (!j->level0) |
318 | return 0; | |
319 | ||
320 | if (!j->level1) | |
321 | return 0; | |
322 | ||
323 | if (!j->level1->matches) | |
324 | return 0; | |
325 | ||
cd34b3c6 HH |
326 | j->level1 = NULL; |
327 | j->level2 = NULL; | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
333 | assert_return(j, -EINVAL); |
334 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
335 | |
336 | if (!j->level0) | |
337 | return 0; | |
338 | ||
339 | if (!j->level1) | |
340 | return 0; | |
341 | ||
342 | if (!j->level2) | |
343 | return 0; | |
344 | ||
345 | if (!j->level2->matches) | |
346 | return 0; | |
cbdca852 | 347 | |
cd34b3c6 | 348 | j->level2 = NULL; |
cbdca852 LP |
349 | return 0; |
350 | } | |
351 | ||
352 | static char *match_make_string(Match *m) { | |
353 | char *p, *r; | |
354 | Match *i; | |
355 | bool enclose = false; | |
356 | ||
357 | if (!m) | |
4ad16808 | 358 | return strdup("none"); |
cbdca852 LP |
359 | |
360 | if (m->type == MATCH_DISCRETE) | |
361 | return strndup(m->data, m->size); | |
362 | ||
363 | p = NULL; | |
364 | LIST_FOREACH(matches, i, m->matches) { | |
365 | char *t, *k; | |
366 | ||
367 | t = match_make_string(i); | |
368 | if (!t) { | |
369 | free(p); | |
370 | return NULL; | |
371 | } | |
372 | ||
373 | if (p) { | |
b7def684 | 374 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
375 | free(p); |
376 | free(t); | |
377 | ||
378 | if (!k) | |
379 | return NULL; | |
380 | ||
381 | p = k; | |
382 | ||
383 | enclose = true; | |
bc302926 | 384 | } else |
cbdca852 | 385 | p = t; |
87d2c1ff LP |
386 | } |
387 | ||
cbdca852 | 388 | if (enclose) { |
b7def684 | 389 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
390 | free(p); |
391 | return r; | |
392 | } | |
87d2c1ff | 393 | |
cbdca852 LP |
394 | return p; |
395 | } | |
de7b95cd | 396 | |
cbdca852 LP |
397 | char *journal_make_match_string(sd_journal *j) { |
398 | assert(j); | |
8f9b6cd9 | 399 | |
cbdca852 | 400 | return match_make_string(j->level0); |
87d2c1ff LP |
401 | } |
402 | ||
a5344d2c LP |
403 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
404 | if (!j) | |
405 | return; | |
87d2c1ff | 406 | |
cbdca852 LP |
407 | if (j->level0) |
408 | match_free(j->level0); | |
de7b95cd | 409 | |
cd34b3c6 | 410 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 411 | |
de190aef | 412 | detach_location(j); |
87d2c1ff LP |
413 | } |
414 | ||
44a6b1b6 | 415 | _pure_ static int compare_with_location(JournalFile *af, Object *ao, Location *l) { |
de190aef LP |
416 | uint64_t a; |
417 | ||
418 | assert(af); | |
419 | assert(ao); | |
420 | assert(l); | |
a87247dd | 421 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
422 | |
423 | if (l->monotonic_set && | |
424 | sd_id128_equal(ao->entry.boot_id, l->boot_id) && | |
425 | l->realtime_set && | |
426 | le64toh(ao->entry.realtime) == l->realtime && | |
427 | l->xor_hash_set && | |
428 | le64toh(ao->entry.xor_hash) == l->xor_hash) | |
429 | return 0; | |
430 | ||
431 | if (l->seqnum_set && | |
432 | sd_id128_equal(af->header->seqnum_id, l->seqnum_id)) { | |
433 | ||
434 | a = le64toh(ao->entry.seqnum); | |
435 | ||
436 | if (a < l->seqnum) | |
437 | return -1; | |
438 | if (a > l->seqnum) | |
439 | return 1; | |
440 | } | |
441 | ||
442 | if (l->monotonic_set && | |
443 | sd_id128_equal(ao->entry.boot_id, l->boot_id)) { | |
444 | ||
445 | a = le64toh(ao->entry.monotonic); | |
446 | ||
447 | if (a < l->monotonic) | |
448 | return -1; | |
449 | if (a > l->monotonic) | |
450 | return 1; | |
451 | } | |
452 | ||
453 | if (l->realtime_set) { | |
454 | ||
455 | a = le64toh(ao->entry.realtime); | |
456 | ||
457 | if (a < l->realtime) | |
458 | return -1; | |
459 | if (a > l->realtime) | |
460 | return 1; | |
461 | } | |
462 | ||
463 | if (l->xor_hash_set) { | |
464 | a = le64toh(ao->entry.xor_hash); | |
465 | ||
466 | if (a < l->xor_hash) | |
467 | return -1; | |
468 | if (a > l->xor_hash) | |
469 | return 1; | |
470 | } | |
471 | ||
472 | return 0; | |
473 | } | |
474 | ||
cbdca852 LP |
475 | static int next_for_match( |
476 | sd_journal *j, | |
477 | Match *m, | |
478 | JournalFile *f, | |
479 | uint64_t after_offset, | |
480 | direction_t direction, | |
481 | Object **ret, | |
482 | uint64_t *offset) { | |
483 | ||
de7b95cd | 484 | int r; |
cbdca852 LP |
485 | uint64_t np = 0; |
486 | Object *n; | |
de7b95cd LP |
487 | |
488 | assert(j); | |
cbdca852 LP |
489 | assert(m); |
490 | assert(f); | |
de7b95cd | 491 | |
cbdca852 LP |
492 | if (m->type == MATCH_DISCRETE) { |
493 | uint64_t dp; | |
de190aef | 494 | |
cbdca852 | 495 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
496 | if (r <= 0) |
497 | return r; | |
498 | ||
cbdca852 | 499 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 500 | |
cbdca852 LP |
501 | } else if (m->type == MATCH_OR_TERM) { |
502 | Match *i; | |
de7b95cd | 503 | |
cbdca852 | 504 | /* Find the earliest match beyond after_offset */ |
de190aef | 505 | |
cbdca852 LP |
506 | LIST_FOREACH(matches, i, m->matches) { |
507 | uint64_t cp; | |
de190aef | 508 | |
cbdca852 | 509 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
510 | if (r < 0) |
511 | return r; | |
cbdca852 | 512 | else if (r > 0) { |
bc302926 | 513 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
514 | np = cp; |
515 | } | |
516 | } | |
b4e5f920 | 517 | |
bc302926 ZJS |
518 | if (np == 0) |
519 | return 0; | |
520 | ||
cbdca852 | 521 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 522 | Match *i, *last_moved; |
de190aef | 523 | |
cbdca852 | 524 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 525 | * this until we find an offset that matches for all |
cbdca852 | 526 | * matches. */ |
de190aef | 527 | |
cbdca852 LP |
528 | if (!m->matches) |
529 | return 0; | |
de7b95cd | 530 | |
2bc8ca0c ZJS |
531 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
532 | if (r <= 0) | |
533 | return r; | |
de190aef | 534 | |
2bc8ca0c ZJS |
535 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
536 | last_moved = m->matches; | |
de190aef | 537 | |
2bc8ca0c ZJS |
538 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
539 | uint64_t cp; | |
de190aef | 540 | |
2bc8ca0c ZJS |
541 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
542 | if (r <= 0) | |
543 | return r; | |
de190aef | 544 | |
2bc8ca0c ZJS |
545 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
546 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
547 | np = cp; | |
548 | last_moved = i; | |
de190aef | 549 | } |
2bc8ca0c | 550 | } |
cbdca852 | 551 | } |
de190aef | 552 | |
bc302926 | 553 | assert(np > 0); |
de190aef | 554 | |
cbdca852 LP |
555 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
556 | if (r < 0) | |
557 | return r; | |
de7b95cd | 558 | |
de190aef | 559 | if (ret) |
cbdca852 | 560 | *ret = n; |
de190aef | 561 | if (offset) |
cbdca852 | 562 | *offset = np; |
de190aef LP |
563 | |
564 | return 1; | |
565 | } | |
566 | ||
cbdca852 LP |
567 | static int find_location_for_match( |
568 | sd_journal *j, | |
569 | Match *m, | |
570 | JournalFile *f, | |
571 | direction_t direction, | |
572 | Object **ret, | |
573 | uint64_t *offset) { | |
574 | ||
de190aef | 575 | int r; |
de190aef LP |
576 | |
577 | assert(j); | |
cbdca852 | 578 | assert(m); |
de190aef | 579 | assert(f); |
de190aef | 580 | |
cbdca852 LP |
581 | if (m->type == MATCH_DISCRETE) { |
582 | uint64_t dp; | |
de190aef | 583 | |
cbdca852 | 584 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
585 | if (r <= 0) |
586 | return r; | |
587 | ||
cbdca852 | 588 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 589 | |
cbdca852 LP |
590 | if (j->current_location.type == LOCATION_HEAD) |
591 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
592 | if (j->current_location.type == LOCATION_TAIL) | |
593 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
594 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
595 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
596 | if (j->current_location.monotonic_set) { | |
597 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
598 | if (r != -ENOENT) | |
599 | return r; | |
600 | } | |
601 | if (j->current_location.realtime_set) | |
602 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 603 | |
cbdca852 | 604 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 605 | |
cbdca852 LP |
606 | } else if (m->type == MATCH_OR_TERM) { |
607 | uint64_t np = 0; | |
608 | Object *n; | |
609 | Match *i; | |
de7b95cd | 610 | |
cbdca852 | 611 | /* Find the earliest match */ |
de7b95cd | 612 | |
cbdca852 LP |
613 | LIST_FOREACH(matches, i, m->matches) { |
614 | uint64_t cp; | |
615 | ||
616 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
617 | if (r < 0) | |
618 | return r; | |
619 | else if (r > 0) { | |
620 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
621 | np = cp; | |
de190aef | 622 | } |
cbdca852 | 623 | } |
de190aef | 624 | |
cbdca852 LP |
625 | if (np == 0) |
626 | return 0; | |
de7b95cd | 627 | |
cbdca852 LP |
628 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
629 | if (r < 0) | |
630 | return r; | |
de7b95cd | 631 | |
cbdca852 LP |
632 | if (ret) |
633 | *ret = n; | |
634 | if (offset) | |
635 | *offset = np; | |
de190aef | 636 | |
cbdca852 | 637 | return 1; |
e892bd17 | 638 | |
cbdca852 LP |
639 | } else { |
640 | Match *i; | |
641 | uint64_t np = 0; | |
642 | ||
643 | assert(m->type == MATCH_AND_TERM); | |
644 | ||
645 | /* First jump to the last match, and then find the | |
646 | * next one where all matches match */ | |
647 | ||
648 | if (!m->matches) | |
649 | return 0; | |
650 | ||
651 | LIST_FOREACH(matches, i, m->matches) { | |
652 | uint64_t cp; | |
653 | ||
654 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
655 | if (r <= 0) | |
4b067dc9 LP |
656 | return r; |
657 | ||
bc302926 | 658 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 659 | np = cp; |
de7b95cd LP |
660 | } |
661 | ||
cbdca852 LP |
662 | return next_for_match(j, m, f, np, direction, ret, offset); |
663 | } | |
664 | } | |
de190aef | 665 | |
cbdca852 LP |
666 | static int find_location_with_matches( |
667 | sd_journal *j, | |
668 | JournalFile *f, | |
669 | direction_t direction, | |
670 | Object **ret, | |
671 | uint64_t *offset) { | |
672 | ||
673 | int r; | |
674 | ||
675 | assert(j); | |
676 | assert(f); | |
677 | assert(ret); | |
678 | assert(offset); | |
679 | ||
680 | if (!j->level0) { | |
681 | /* No matches is simple */ | |
682 | ||
683 | if (j->current_location.type == LOCATION_HEAD) | |
684 | return journal_file_next_entry(f, NULL, 0, DIRECTION_DOWN, ret, offset); | |
685 | if (j->current_location.type == LOCATION_TAIL) | |
686 | return journal_file_next_entry(f, NULL, 0, DIRECTION_UP, ret, offset); | |
687 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
688 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
689 | if (j->current_location.monotonic_set) { | |
690 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
691 | if (r != -ENOENT) | |
692 | return r; | |
de7b95cd | 693 | } |
cbdca852 LP |
694 | if (j->current_location.realtime_set) |
695 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 696 | |
cbdca852 LP |
697 | return journal_file_next_entry(f, NULL, 0, direction, ret, offset); |
698 | } else | |
699 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
700 | } | |
de7b95cd | 701 | |
cbdca852 LP |
702 | static int next_with_matches( |
703 | sd_journal *j, | |
704 | JournalFile *f, | |
705 | direction_t direction, | |
706 | Object **ret, | |
707 | uint64_t *offset) { | |
708 | ||
709 | Object *c; | |
710 | uint64_t cp; | |
711 | ||
712 | assert(j); | |
713 | assert(f); | |
714 | assert(ret); | |
715 | assert(offset); | |
716 | ||
717 | c = *ret; | |
718 | cp = *offset; | |
719 | ||
720 | /* No matches is easy. We simple advance the file | |
721 | * pointer by one. */ | |
722 | if (!j->level0) | |
723 | return journal_file_next_entry(f, c, cp, direction, ret, offset); | |
724 | ||
725 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 726 | * with an offset at least one step larger */ |
cbdca852 | 727 | return next_for_match(j, j->level0, f, direction == DIRECTION_DOWN ? cp+1 : cp-1, direction, ret, offset); |
de7b95cd LP |
728 | } |
729 | ||
de190aef LP |
730 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction, Object **ret, uint64_t *offset) { |
731 | Object *c; | |
732 | uint64_t cp; | |
cbdca852 | 733 | int r; |
de190aef LP |
734 | |
735 | assert(j); | |
736 | assert(f); | |
737 | ||
87011c25 | 738 | if (f->last_direction == direction && f->current_offset > 0) { |
466ccd92 LP |
739 | cp = f->current_offset; |
740 | ||
741 | r = journal_file_move_to_object(f, OBJECT_ENTRY, cp, &c); | |
de190aef LP |
742 | if (r < 0) |
743 | return r; | |
744 | ||
de190aef LP |
745 | r = next_with_matches(j, f, direction, &c, &cp); |
746 | if (r <= 0) | |
747 | return r; | |
de190aef | 748 | } else { |
cbdca852 | 749 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
750 | if (r <= 0) |
751 | return r; | |
de190aef LP |
752 | } |
753 | ||
bc302926 | 754 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
755 | * that is actually different from what we were previously |
756 | * looking at. This is necessary to handle entries which exist | |
757 | * in two (or more) journal files, and which shall all be | |
758 | * suppressed but one. */ | |
759 | ||
de190aef LP |
760 | for (;;) { |
761 | bool found; | |
762 | ||
763 | if (j->current_location.type == LOCATION_DISCRETE) { | |
764 | int k; | |
765 | ||
766 | k = compare_with_location(f, c, &j->current_location); | |
1cdf7175 CH |
767 | |
768 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
769 | } else |
770 | found = true; | |
771 | ||
772 | if (found) { | |
6573ef05 MS |
773 | journal_file_save_location(f, direction, c, cp); |
774 | ||
de190aef LP |
775 | if (ret) |
776 | *ret = c; | |
777 | if (offset) | |
778 | *offset = cp; | |
779 | return 1; | |
780 | } | |
781 | ||
782 | r = next_with_matches(j, f, direction, &c, &cp); | |
783 | if (r <= 0) | |
784 | return r; | |
785 | } | |
786 | } | |
787 | ||
e892bd17 | 788 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de LP |
789 | JournalFile *f, *new_file = NULL; |
790 | uint64_t new_offset = 0; | |
a002d44b | 791 | uint64_t p = 0; |
cec736d2 | 792 | Iterator i; |
a002d44b | 793 | Object *o; |
87d2c1ff LP |
794 | int r; |
795 | ||
1ae464e0 TA |
796 | assert_return(j, -EINVAL); |
797 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 798 | |
c1f906bd | 799 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 800 | bool found; |
87d2c1ff | 801 | |
de190aef | 802 | r = next_beyond_location(j, f, direction, &o, &p); |
e590af26 | 803 | if (r < 0) { |
da927ba9 | 804 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 805 | remove_file_real(j, f); |
e590af26 | 806 | continue; |
6573ef05 MS |
807 | } else if (r == 0) { |
808 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 809 | continue; |
6573ef05 | 810 | } |
87d2c1ff | 811 | |
468b21de | 812 | if (!new_file) |
de190aef LP |
813 | found = true; |
814 | else { | |
815 | int k; | |
816 | ||
d8ae66d7 | 817 | k = journal_file_compare_locations(f, new_file); |
de190aef | 818 | |
bc302926 | 819 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
820 | } |
821 | ||
822 | if (found) { | |
468b21de | 823 | new_file = f; |
cec736d2 | 824 | new_offset = p; |
87d2c1ff | 825 | } |
87d2c1ff LP |
826 | } |
827 | ||
468b21de | 828 | if (!new_file) |
de190aef | 829 | return 0; |
ae2cc8ef | 830 | |
468b21de LP |
831 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_offset, &o); |
832 | if (r < 0) | |
833 | return r; | |
834 | ||
1eb6332d | 835 | set_location(j, new_file, o); |
ae2cc8ef | 836 | |
de190aef LP |
837 | return 1; |
838 | } | |
ae2cc8ef | 839 | |
a5344d2c | 840 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
841 | return real_journal_next(j, DIRECTION_DOWN); |
842 | } | |
ae2cc8ef | 843 | |
a5344d2c | 844 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
845 | return real_journal_next(j, DIRECTION_UP); |
846 | } | |
ae2cc8ef | 847 | |
6f003b43 | 848 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 849 | int c = 0, r; |
ae2cc8ef | 850 | |
1ae464e0 TA |
851 | assert_return(j, -EINVAL); |
852 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 853 | |
6f003b43 LP |
854 | if (skip == 0) { |
855 | /* If this is not a discrete skip, then at least | |
856 | * resolve the current location */ | |
857 | if (j->current_location.type != LOCATION_DISCRETE) | |
858 | return real_journal_next(j, direction); | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
863 | do { | |
864 | r = real_journal_next(j, direction); | |
de190aef LP |
865 | if (r < 0) |
866 | return r; | |
867 | ||
868 | if (r == 0) | |
869 | return c; | |
870 | ||
871 | skip--; | |
872 | c++; | |
6f003b43 | 873 | } while (skip > 0); |
87d2c1ff | 874 | |
de190aef | 875 | return c; |
87d2c1ff LP |
876 | } |
877 | ||
6f003b43 LP |
878 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
879 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
880 | } | |
de190aef | 881 | |
6f003b43 LP |
882 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
883 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
884 | } |
885 | ||
a5344d2c | 886 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 887 | Object *o; |
87d2c1ff | 888 | int r; |
3fbf9cbb | 889 | char bid[33], sid[33]; |
87d2c1ff | 890 | |
1ae464e0 TA |
891 | assert_return(j, -EINVAL); |
892 | assert_return(!journal_pid_changed(j), -ECHILD); | |
893 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 894 | |
3fbf9cbb LP |
895 | if (!j->current_file || j->current_file->current_offset <= 0) |
896 | return -EADDRNOTAVAIL; | |
87d2c1ff | 897 | |
de190aef | 898 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
899 | if (r < 0) |
900 | return r; | |
901 | ||
3fbf9cbb LP |
902 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
903 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 904 | |
3fbf9cbb | 905 | if (asprintf(cursor, |
507f22bd ZJS |
906 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
907 | sid, le64toh(o->entry.seqnum), | |
908 | bid, le64toh(o->entry.monotonic), | |
909 | le64toh(o->entry.realtime), | |
910 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 911 | return -ENOMEM; |
87d2c1ff | 912 | |
6f47ad30 | 913 | return 0; |
87d2c1ff LP |
914 | } |
915 | ||
a5344d2c | 916 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 917 | const char *word, *state; |
de190aef | 918 | size_t l; |
de190aef LP |
919 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
920 | bool | |
921 | seqnum_id_set = false, | |
922 | seqnum_set = false, | |
923 | boot_id_set = false, | |
924 | monotonic_set = false, | |
925 | realtime_set = false, | |
926 | xor_hash_set = false; | |
927 | sd_id128_t seqnum_id, boot_id; | |
928 | ||
1ae464e0 TA |
929 | assert_return(j, -EINVAL); |
930 | assert_return(!journal_pid_changed(j), -ECHILD); | |
931 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 932 | |
a2a5291b | 933 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
934 | char *item; |
935 | int k = 0; | |
936 | ||
a2a5291b | 937 | if (l < 2 || word[1] != '=') |
de190aef LP |
938 | return -EINVAL; |
939 | ||
a2a5291b | 940 | item = strndup(word, l); |
de190aef LP |
941 | if (!item) |
942 | return -ENOMEM; | |
943 | ||
a2a5291b | 944 | switch (word[0]) { |
de190aef LP |
945 | |
946 | case 's': | |
947 | seqnum_id_set = true; | |
be3ea5ea | 948 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
949 | break; |
950 | ||
951 | case 'i': | |
952 | seqnum_set = true; | |
be3ea5ea | 953 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
954 | k = -EINVAL; |
955 | break; | |
956 | ||
957 | case 'b': | |
958 | boot_id_set = true; | |
be3ea5ea | 959 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
960 | break; |
961 | ||
962 | case 'm': | |
963 | monotonic_set = true; | |
be3ea5ea | 964 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
965 | k = -EINVAL; |
966 | break; | |
967 | ||
968 | case 't': | |
969 | realtime_set = true; | |
be3ea5ea | 970 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
971 | k = -EINVAL; |
972 | break; | |
973 | ||
974 | case 'x': | |
975 | xor_hash_set = true; | |
be3ea5ea | 976 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
977 | k = -EINVAL; |
978 | break; | |
979 | } | |
980 | ||
981 | free(item); | |
982 | ||
983 | if (k < 0) | |
984 | return k; | |
985 | } | |
986 | ||
987 | if ((!seqnum_set || !seqnum_id_set) && | |
988 | (!monotonic_set || !boot_id_set) && | |
989 | !realtime_set) | |
990 | return -EINVAL; | |
991 | ||
992 | reset_location(j); | |
993 | ||
a87247dd | 994 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
995 | |
996 | if (realtime_set) { | |
997 | j->current_location.realtime = (uint64_t) realtime; | |
998 | j->current_location.realtime_set = true; | |
999 | } | |
1000 | ||
1001 | if (seqnum_set && seqnum_id_set) { | |
1002 | j->current_location.seqnum = (uint64_t) seqnum; | |
1003 | j->current_location.seqnum_id = seqnum_id; | |
1004 | j->current_location.seqnum_set = true; | |
1005 | } | |
1006 | ||
1007 | if (monotonic_set && boot_id_set) { | |
1008 | j->current_location.monotonic = (uint64_t) monotonic; | |
1009 | j->current_location.boot_id = boot_id; | |
1010 | j->current_location.monotonic_set = true; | |
1011 | } | |
1012 | ||
1013 | if (xor_hash_set) { | |
1014 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1015 | j->current_location.xor_hash_set = true; | |
1016 | } | |
1017 | ||
1018 | return 0; | |
1019 | } | |
1020 | ||
c6511e85 LP |
1021 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1022 | int r; | |
a2a5291b | 1023 | const char *word, *state; |
c6511e85 LP |
1024 | size_t l; |
1025 | Object *o; | |
1026 | ||
1ae464e0 TA |
1027 | assert_return(j, -EINVAL); |
1028 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1029 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1030 | |
1031 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1032 | return -EADDRNOTAVAIL; | |
1033 | ||
1034 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1035 | if (r < 0) | |
1036 | return r; | |
1037 | ||
a2a5291b | 1038 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
c6511e85 LP |
1039 | _cleanup_free_ char *item = NULL; |
1040 | sd_id128_t id; | |
1041 | unsigned long long ll; | |
1042 | int k = 0; | |
1043 | ||
a2a5291b | 1044 | if (l < 2 || word[1] != '=') |
c6511e85 LP |
1045 | return -EINVAL; |
1046 | ||
a2a5291b | 1047 | item = strndup(word, l); |
c6511e85 LP |
1048 | if (!item) |
1049 | return -ENOMEM; | |
1050 | ||
a2a5291b | 1051 | switch (word[0]) { |
c6511e85 LP |
1052 | |
1053 | case 's': | |
1054 | k = sd_id128_from_string(item+2, &id); | |
1055 | if (k < 0) | |
1056 | return k; | |
1057 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1058 | return 0; | |
1059 | break; | |
1060 | ||
1061 | case 'i': | |
1062 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1063 | return -EINVAL; | |
1064 | if (ll != le64toh(o->entry.seqnum)) | |
1065 | return 0; | |
1066 | break; | |
1067 | ||
1068 | case 'b': | |
1069 | k = sd_id128_from_string(item+2, &id); | |
1070 | if (k < 0) | |
1071 | return k; | |
1072 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1073 | return 0; | |
1074 | break; | |
1075 | ||
1076 | case 'm': | |
1077 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1078 | return -EINVAL; | |
1079 | if (ll != le64toh(o->entry.monotonic)) | |
1080 | return 0; | |
1081 | break; | |
1082 | ||
1083 | case 't': | |
1084 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1085 | return -EINVAL; | |
1086 | if (ll != le64toh(o->entry.realtime)) | |
1087 | return 0; | |
1088 | break; | |
1089 | ||
1090 | case 'x': | |
1091 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1092 | return -EINVAL; | |
1093 | if (ll != le64toh(o->entry.xor_hash)) | |
1094 | return 0; | |
1095 | break; | |
1096 | } | |
1097 | } | |
1098 | ||
1099 | return 1; | |
1100 | } | |
1101 | ||
1102 | ||
a5344d2c | 1103 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1104 | assert_return(j, -EINVAL); |
1105 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1106 | |
1107 | reset_location(j); | |
a87247dd | 1108 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1109 | j->current_location.boot_id = boot_id; |
1110 | j->current_location.monotonic = usec; | |
1111 | j->current_location.monotonic_set = true; | |
1112 | ||
1113 | return 0; | |
1114 | } | |
1115 | ||
a5344d2c | 1116 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1117 | assert_return(j, -EINVAL); |
1118 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1119 | |
1120 | reset_location(j); | |
a87247dd | 1121 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1122 | j->current_location.realtime = usec; |
1123 | j->current_location.realtime_set = true; | |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
a5344d2c | 1128 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1129 | assert_return(j, -EINVAL); |
1130 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1131 | |
1132 | reset_location(j); | |
1133 | j->current_location.type = LOCATION_HEAD; | |
1134 | ||
1135 | return 0; | |
1136 | } | |
1137 | ||
a5344d2c | 1138 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1139 | assert_return(j, -EINVAL); |
1140 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1141 | |
1142 | reset_location(j); | |
1143 | j->current_location.type = LOCATION_TAIL; | |
1144 | ||
1145 | return 0; | |
87d2c1ff LP |
1146 | } |
1147 | ||
85210bff LP |
1148 | static void check_network(sd_journal *j, int fd) { |
1149 | struct statfs sfs; | |
1150 | ||
1151 | assert(j); | |
1152 | ||
1153 | if (j->on_network) | |
1154 | return; | |
1155 | ||
1156 | if (fstatfs(fd, &sfs) < 0) | |
1157 | return; | |
1158 | ||
1159 | j->on_network = | |
c51cf056 ZJS |
1160 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1161 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1162 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1163 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1164 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1165 | } |
1166 | ||
a688baa8 ZJS |
1167 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1168 | const char *full, *tilded, *atted; | |
1169 | ||
baabc091 | 1170 | full = strappenda(prefix, ".journal"); |
a688baa8 ZJS |
1171 | tilded = strappenda(full, "~"); |
1172 | atted = strappenda(prefix, "@"); | |
1173 | ||
1174 | return streq(filename, full) || | |
1175 | streq(filename, tilded) || | |
1176 | startswith(filename, atted); | |
1177 | } | |
1178 | ||
1179 | static bool file_type_wanted(int flags, const char *filename) { | |
1180 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1181 | return false; | |
1182 | ||
1183 | /* no flags set → every type is OK */ | |
1184 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1185 | return true; | |
1186 | ||
1187 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1188 | return true; | |
1189 | ||
1190 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1191 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1192 | ||
de0671ee | 1193 | assert_se(snprintf(prefix, sizeof(prefix), "user-"UID_FMT, getuid()) |
a688baa8 ZJS |
1194 | < (int) sizeof(prefix)); |
1195 | ||
1196 | if (file_has_type_prefix(prefix, filename)) | |
1197 | return true; | |
1198 | } | |
1199 | ||
1200 | return false; | |
1201 | } | |
1202 | ||
5302ebe1 | 1203 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1204 | JournalFile *f = NULL; |
5302ebe1 | 1205 | int r; |
3fbf9cbb LP |
1206 | |
1207 | assert(j); | |
5302ebe1 | 1208 | assert(path); |
3fbf9cbb | 1209 | |
c1f906bd | 1210 | if (ordered_hashmap_get(j->files, path)) |
50f20cfd | 1211 | return 0; |
50f20cfd | 1212 | |
c1f906bd | 1213 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
5302ebe1 | 1214 | log_warning("Too many open journal files, not adding %s.", path); |
3ac251b8 | 1215 | return set_put_error(j, -ETOOMANYREFS); |
50f20cfd LP |
1216 | } |
1217 | ||
16e9f408 | 1218 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1219 | if (r < 0) |
3fbf9cbb | 1220 | return r; |
3fbf9cbb | 1221 | |
72f59706 | 1222 | /* journal_file_dump(f); */ |
de190aef | 1223 | |
c1f906bd | 1224 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb LP |
1225 | if (r < 0) { |
1226 | journal_file_close(f); | |
1227 | return r; | |
1228 | } | |
1229 | ||
5ec76417 | 1230 | log_debug("File %s added.", f->path); |
a50d7d43 | 1231 | |
85210bff LP |
1232 | check_network(j, f->fd); |
1233 | ||
a963990f LP |
1234 | j->current_invalidate_counter ++; |
1235 | ||
50f20cfd LP |
1236 | return 0; |
1237 | } | |
1238 | ||
5302ebe1 ZJS |
1239 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1240 | _cleanup_free_ char *path = NULL; | |
1241 | int r; | |
1242 | ||
1243 | assert(j); | |
1244 | assert(prefix); | |
1245 | assert(filename); | |
1246 | ||
1247 | if (j->no_new_files || | |
1248 | !file_type_wanted(j->flags, filename)) | |
1249 | return 0; | |
1250 | ||
1251 | path = strjoin(prefix, "/", filename, NULL); | |
1252 | if (!path) | |
1253 | return -ENOMEM; | |
1254 | ||
1255 | r = add_any_file(j, path); | |
1256 | if (r == -ENOENT) | |
1257 | return 0; | |
1258 | return 0; | |
1259 | } | |
1260 | ||
a963990f | 1261 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
a9a245c1 | 1262 | _cleanup_free_ char *path; |
50f20cfd LP |
1263 | JournalFile *f; |
1264 | ||
1265 | assert(j); | |
1266 | assert(prefix); | |
1267 | assert(filename); | |
1268 | ||
b7def684 | 1269 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1270 | if (!path) |
50f20cfd LP |
1271 | return -ENOMEM; |
1272 | ||
c1f906bd | 1273 | f = ordered_hashmap_get(j->files, path); |
50f20cfd LP |
1274 | if (!f) |
1275 | return 0; | |
1276 | ||
a9a245c1 ZJS |
1277 | remove_file_real(j, f); |
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1282 | assert(j); | |
1283 | assert(f); | |
1284 | ||
c1f906bd | 1285 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1286 | |
5ec76417 | 1287 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1288 | |
3c1668da LP |
1289 | if (j->current_file == f) { |
1290 | j->current_file = NULL; | |
1291 | j->current_field = 0; | |
1292 | } | |
1293 | ||
1294 | if (j->unique_file == f) { | |
360af4cf | 1295 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1296 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1297 | j->unique_offset = 0; |
360af4cf ZJS |
1298 | if (!j->unique_file) |
1299 | j->unique_file_lost = true; | |
3c1668da LP |
1300 | } |
1301 | ||
50f20cfd LP |
1302 | journal_file_close(f); |
1303 | ||
a963990f | 1304 | j->current_invalidate_counter ++; |
3fbf9cbb LP |
1305 | } |
1306 | ||
a963990f | 1307 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1308 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1309 | int r; |
7fd1b19b | 1310 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1311 | sd_id128_t id, mid; |
a963990f | 1312 | Directory *m; |
3fbf9cbb LP |
1313 | |
1314 | assert(j); | |
1315 | assert(prefix); | |
a963990f | 1316 | assert(dirname); |
3fbf9cbb | 1317 | |
d95b1fb3 ZJS |
1318 | log_debug("Considering %s/%s.", prefix, dirname); |
1319 | ||
cf244689 | 1320 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1321 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1322 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1323 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1324 | return 0; |
1325 | ||
b7def684 | 1326 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1327 | if (!path) |
3fbf9cbb LP |
1328 | return -ENOMEM; |
1329 | ||
a963990f | 1330 | d = opendir(path); |
3fbf9cbb | 1331 | if (!d) { |
56f64d95 | 1332 | log_debug_errno(errno, "Failed to open %s: %m", path); |
3fbf9cbb LP |
1333 | if (errno == ENOENT) |
1334 | return 0; | |
3fbf9cbb LP |
1335 | return -errno; |
1336 | } | |
1337 | ||
a963990f LP |
1338 | m = hashmap_get(j->directories_by_path, path); |
1339 | if (!m) { | |
1340 | m = new0(Directory, 1); | |
a50d7d43 | 1341 | if (!m) |
a963990f | 1342 | return -ENOMEM; |
a963990f LP |
1343 | |
1344 | m->is_root = false; | |
1345 | m->path = path; | |
1346 | ||
1347 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1348 | free(m); |
1349 | return -ENOMEM; | |
1350 | } | |
1351 | ||
a50d7d43 | 1352 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1353 | j->current_invalidate_counter ++; |
1354 | ||
5ec76417 | 1355 | log_debug("Directory %s added.", m->path); |
a963990f | 1356 | |
a50d7d43 | 1357 | } else if (m->is_root) |
a963990f | 1358 | return 0; |
a963990f LP |
1359 | |
1360 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1361 | ||
1362 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1363 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1364 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1365 | IN_ONLYDIR); |
a963990f LP |
1366 | |
1367 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1368 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1369 | } | |
1370 | ||
1371 | for (;;) { | |
7d5e9c0f | 1372 | struct dirent *de; |
a963990f | 1373 | |
bde1fdd7 FW |
1374 | errno = 0; |
1375 | de = readdir(d); | |
1376 | if (!de && errno != 0) { | |
1377 | r = -errno; | |
56f64d95 | 1378 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1379 | return r; |
1380 | } | |
1381 | if (!de) | |
a963990f LP |
1382 | break; |
1383 | ||
de2c3907 LP |
1384 | if (dirent_is_file_with_suffix(de, ".journal") || |
1385 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1386 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1387 | if (r < 0) { |
c33b3297 MS |
1388 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1389 | m->path, de->d_name); | |
3ac251b8 | 1390 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1391 | if (r < 0) |
1392 | return r; | |
1393 | } | |
a963990f LP |
1394 | } |
1395 | } | |
1396 | ||
85210bff LP |
1397 | check_network(j, dirfd(d)); |
1398 | ||
a963990f LP |
1399 | return 0; |
1400 | } | |
1401 | ||
89739579 | 1402 | static int add_root_directory(sd_journal *j, const char *p) { |
7fd1b19b | 1403 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1404 | Directory *m; |
1405 | int r; | |
1406 | ||
1407 | assert(j); | |
1408 | assert(p); | |
1409 | ||
1410 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1411 | !path_startswith(p, "/run")) | |
1412 | return -EINVAL; | |
1413 | ||
89739579 LP |
1414 | if (j->prefix) |
1415 | p = strappenda(j->prefix, p); | |
b6741478 | 1416 | |
a963990f LP |
1417 | d = opendir(p); |
1418 | if (!d) | |
1419 | return -errno; | |
1420 | ||
1421 | m = hashmap_get(j->directories_by_path, p); | |
1422 | if (!m) { | |
1423 | m = new0(Directory, 1); | |
a50d7d43 | 1424 | if (!m) |
a963990f | 1425 | return -ENOMEM; |
a963990f LP |
1426 | |
1427 | m->is_root = true; | |
1428 | m->path = strdup(p); | |
1429 | if (!m->path) { | |
a963990f LP |
1430 | free(m); |
1431 | return -ENOMEM; | |
1432 | } | |
1433 | ||
1434 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1435 | free(m->path); |
1436 | free(m); | |
1437 | return -ENOMEM; | |
1438 | } | |
1439 | ||
1440 | j->current_invalidate_counter ++; | |
1441 | ||
5ec76417 | 1442 | log_debug("Root directory %s added.", m->path); |
a963990f | 1443 | |
a50d7d43 | 1444 | } else if (!m->is_root) |
a963990f | 1445 | return 0; |
50f20cfd | 1446 | |
a963990f LP |
1447 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1448 | ||
1449 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1450 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1451 | IN_ONLYDIR); |
a963990f LP |
1452 | |
1453 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1454 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1455 | } | |
50f20cfd | 1456 | |
5302ebe1 ZJS |
1457 | if (j->no_new_files) |
1458 | return 0; | |
1459 | ||
3fbf9cbb | 1460 | for (;;) { |
7d5e9c0f | 1461 | struct dirent *de; |
a963990f | 1462 | sd_id128_t id; |
3fbf9cbb | 1463 | |
bde1fdd7 FW |
1464 | errno = 0; |
1465 | de = readdir(d); | |
1466 | if (!de && errno != 0) { | |
1467 | r = -errno; | |
56f64d95 | 1468 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1469 | return r; |
1470 | } | |
1471 | if (!de) | |
3fbf9cbb LP |
1472 | break; |
1473 | ||
de2c3907 LP |
1474 | if (dirent_is_file_with_suffix(de, ".journal") || |
1475 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1476 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1477 | if (r < 0) { |
c33b3297 MS |
1478 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1479 | m->path, de->d_name); | |
3ac251b8 | 1480 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1481 | if (r < 0) |
1482 | return r; | |
1483 | } | |
6f5878a2 | 1484 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1485 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1486 | ||
1487 | r = add_directory(j, m->path, de->d_name); | |
1488 | if (r < 0) | |
da927ba9 | 1489 | log_debug_errno(r, "Failed to add directory %s/%s: %m", m->path, de->d_name); |
a963990f | 1490 | } |
3fbf9cbb LP |
1491 | } |
1492 | ||
85210bff LP |
1493 | check_network(j, dirfd(d)); |
1494 | ||
a963990f LP |
1495 | return 0; |
1496 | } | |
1497 | ||
1498 | static int remove_directory(sd_journal *j, Directory *d) { | |
1499 | assert(j); | |
1500 | ||
1501 | if (d->wd > 0) { | |
1502 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1503 | ||
1504 | if (j->inotify_fd >= 0) | |
1505 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1506 | } | |
1507 | ||
1508 | hashmap_remove(j->directories_by_path, d->path); | |
1509 | ||
1510 | if (d->is_root) | |
5ec76417 | 1511 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1512 | else |
5ec76417 | 1513 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1514 | |
1515 | free(d->path); | |
1516 | free(d); | |
50f20cfd | 1517 | |
3fbf9cbb LP |
1518 | return 0; |
1519 | } | |
1520 | ||
89739579 | 1521 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1522 | int r; |
a963990f LP |
1523 | const char search_paths[] = |
1524 | "/run/log/journal\0" | |
1525 | "/var/log/journal\0"; | |
1526 | const char *p; | |
50f20cfd LP |
1527 | |
1528 | assert(j); | |
50f20cfd | 1529 | |
a963990f LP |
1530 | /* We ignore most errors here, since the idea is to only open |
1531 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1532 | |
6fe391c5 | 1533 | NULSTR_FOREACH(p, search_paths) { |
89739579 | 1534 | r = add_root_directory(j, p); |
3ac251b8 LP |
1535 | if (r < 0 && r != -ENOENT) { |
1536 | r = set_put_error(j, r); | |
1537 | if (r < 0) | |
1538 | return r; | |
1539 | } | |
6fe391c5 | 1540 | } |
50f20cfd | 1541 | |
a963990f | 1542 | return 0; |
50f20cfd LP |
1543 | } |
1544 | ||
5302ebe1 ZJS |
1545 | static int add_current_paths(sd_journal *j) { |
1546 | Iterator i; | |
1547 | JournalFile *f; | |
1548 | ||
1549 | assert(j); | |
1550 | assert(j->no_new_files); | |
1551 | ||
1552 | /* Simply adds all directories for files we have open as | |
1553 | * "root" directories. We don't expect errors here, so we | |
1554 | * treat them as fatal. */ | |
1555 | ||
c1f906bd | 1556 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1557 | _cleanup_free_ char *dir; |
e9174f29 | 1558 | int r; |
5302ebe1 ZJS |
1559 | |
1560 | dir = dirname_malloc(f->path); | |
1561 | if (!dir) | |
1562 | return -ENOMEM; | |
1563 | ||
89739579 | 1564 | r = add_root_directory(j, dir); |
5302ebe1 ZJS |
1565 | if (r < 0) { |
1566 | set_put_error(j, r); | |
1567 | return r; | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | return 0; | |
1572 | } | |
1573 | ||
1574 | ||
a963990f | 1575 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1576 | assert(j); |
50f20cfd | 1577 | |
a963990f LP |
1578 | if (j->inotify_fd < 0) { |
1579 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1580 | if (j->inotify_fd < 0) | |
1581 | return -errno; | |
1582 | } | |
50f20cfd | 1583 | |
a963990f | 1584 | if (!j->directories_by_wd) { |
d5099efc | 1585 | j->directories_by_wd = hashmap_new(NULL); |
a963990f LP |
1586 | if (!j->directories_by_wd) |
1587 | return -ENOMEM; | |
50f20cfd | 1588 | } |
a963990f LP |
1589 | |
1590 | return 0; | |
50f20cfd LP |
1591 | } |
1592 | ||
7827b1a1 | 1593 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1594 | sd_journal *j; |
50f20cfd | 1595 | |
a963990f LP |
1596 | j = new0(sd_journal, 1); |
1597 | if (!j) | |
1598 | return NULL; | |
50f20cfd | 1599 | |
a65f06bb | 1600 | j->original_pid = getpid(); |
a963990f LP |
1601 | j->inotify_fd = -1; |
1602 | j->flags = flags; | |
93b73b06 | 1603 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1604 | |
7827b1a1 LP |
1605 | if (path) { |
1606 | j->path = strdup(path); | |
6180fc61 ZJS |
1607 | if (!j->path) |
1608 | goto fail; | |
7827b1a1 LP |
1609 | } |
1610 | ||
c1f906bd | 1611 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1612 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1613 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1614 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1615 | goto fail; |
16e9f408 | 1616 | |
a963990f | 1617 | return j; |
6180fc61 ZJS |
1618 | |
1619 | fail: | |
1620 | sd_journal_close(j); | |
1621 | return NULL; | |
50f20cfd LP |
1622 | } |
1623 | ||
a5344d2c | 1624 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1625 | sd_journal *j; |
3fbf9cbb | 1626 | int r; |
87d2c1ff | 1627 | |
1ae464e0 | 1628 | assert_return(ret, -EINVAL); |
b6741478 | 1629 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1630 | |
7827b1a1 | 1631 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1632 | if (!j) |
1633 | return -ENOMEM; | |
1634 | ||
89739579 | 1635 | r = add_search_paths(j); |
a963990f | 1636 | if (r < 0) |
50f20cfd | 1637 | goto fail; |
50f20cfd | 1638 | |
a963990f LP |
1639 | *ret = j; |
1640 | return 0; | |
cf244689 | 1641 | |
a963990f LP |
1642 | fail: |
1643 | sd_journal_close(j); | |
87d2c1ff | 1644 | |
a963990f LP |
1645 | return r; |
1646 | } | |
50f20cfd | 1647 | |
b6741478 LP |
1648 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1649 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1650 | sd_journal *j; | |
1651 | char *p; | |
1652 | int r; | |
1653 | ||
1654 | assert_return(machine, -EINVAL); | |
1655 | assert_return(ret, -EINVAL); | |
1656 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1657 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 LP |
1658 | |
1659 | p = strappenda("/run/systemd/machines/", machine); | |
1660 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); | |
1661 | if (r == -ENOENT) | |
1662 | return -EHOSTDOWN; | |
1663 | if (r < 0) | |
1664 | return r; | |
1665 | if (!root) | |
1666 | return -ENODATA; | |
1667 | ||
1668 | if (!streq_ptr(class, "container")) | |
1669 | return -EIO; | |
1670 | ||
1671 | j = journal_new(flags, NULL); | |
1672 | if (!j) | |
1673 | return -ENOMEM; | |
1674 | ||
89739579 LP |
1675 | j->prefix = root; |
1676 | root = NULL; | |
1677 | ||
1678 | r = add_search_paths(j); | |
b6741478 LP |
1679 | if (r < 0) |
1680 | goto fail; | |
1681 | ||
1682 | *ret = j; | |
1683 | return 0; | |
1684 | ||
1685 | fail: | |
1686 | sd_journal_close(j); | |
1687 | return r; | |
1688 | } | |
1689 | ||
a963990f LP |
1690 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1691 | sd_journal *j; | |
1692 | int r; | |
87d2c1ff | 1693 | |
1ae464e0 TA |
1694 | assert_return(ret, -EINVAL); |
1695 | assert_return(path, -EINVAL); | |
1696 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1697 | |
7827b1a1 | 1698 | j = journal_new(flags, path); |
a963990f LP |
1699 | if (!j) |
1700 | return -ENOMEM; | |
3fbf9cbb | 1701 | |
89739579 | 1702 | r = add_root_directory(j, path); |
6fe391c5 | 1703 | if (r < 0) { |
3ac251b8 | 1704 | set_put_error(j, r); |
a963990f | 1705 | goto fail; |
6fe391c5 | 1706 | } |
87d2c1ff LP |
1707 | |
1708 | *ret = j; | |
1709 | return 0; | |
1710 | ||
1711 | fail: | |
1712 | sd_journal_close(j); | |
1713 | ||
1714 | return r; | |
a963990f | 1715 | } |
87d2c1ff | 1716 | |
5302ebe1 ZJS |
1717 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1718 | sd_journal *j; | |
1719 | const char **path; | |
1720 | int r; | |
1721 | ||
1ae464e0 TA |
1722 | assert_return(ret, -EINVAL); |
1723 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1724 | |
1725 | j = journal_new(flags, NULL); | |
1726 | if (!j) | |
1727 | return -ENOMEM; | |
1728 | ||
1729 | STRV_FOREACH(path, paths) { | |
1730 | r = add_any_file(j, *path); | |
1731 | if (r < 0) { | |
da927ba9 | 1732 | log_error_errno(r, "Failed to open %s: %m", *path); |
5302ebe1 ZJS |
1733 | goto fail; |
1734 | } | |
1735 | } | |
1736 | ||
1737 | j->no_new_files = true; | |
1738 | ||
1739 | *ret = j; | |
1740 | return 0; | |
1741 | ||
1742 | fail: | |
1743 | sd_journal_close(j); | |
1744 | ||
1745 | return r; | |
1746 | } | |
1747 | ||
a5344d2c | 1748 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1749 | Directory *d; |
1750 | JournalFile *f; | |
1751 | ||
a5344d2c LP |
1752 | if (!j) |
1753 | return; | |
87d2c1ff | 1754 | |
54b1da83 LP |
1755 | sd_journal_flush_matches(j); |
1756 | ||
c1f906bd | 1757 | while ((f = ordered_hashmap_steal_first(j->files))) |
a963990f | 1758 | journal_file_close(f); |
50f20cfd | 1759 | |
c1f906bd | 1760 | ordered_hashmap_free(j->files); |
260a2be4 | 1761 | |
a963990f LP |
1762 | while ((d = hashmap_first(j->directories_by_path))) |
1763 | remove_directory(j, d); | |
260a2be4 | 1764 | |
a963990f LP |
1765 | while ((d = hashmap_first(j->directories_by_wd))) |
1766 | remove_directory(j, d); | |
87d2c1ff | 1767 | |
a963990f LP |
1768 | hashmap_free(j->directories_by_path); |
1769 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1770 | |
03e334a1 | 1771 | safe_close(j->inotify_fd); |
50f20cfd | 1772 | |
bf807d4d LP |
1773 | if (j->mmap) { |
1774 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1775 | mmap_cache_unref(j->mmap); |
bf807d4d | 1776 | } |
16e9f408 | 1777 | |
7827b1a1 | 1778 | free(j->path); |
89739579 | 1779 | free(j->prefix); |
3c1668da | 1780 | free(j->unique_field); |
6fe391c5 | 1781 | set_free(j->errors); |
87d2c1ff LP |
1782 | free(j); |
1783 | } | |
3fbf9cbb | 1784 | |
a5344d2c | 1785 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1786 | Object *o; |
1787 | JournalFile *f; | |
1788 | int r; | |
1789 | ||
1ae464e0 TA |
1790 | assert_return(j, -EINVAL); |
1791 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1792 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1793 | |
1794 | f = j->current_file; | |
1795 | if (!f) | |
de190aef | 1796 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1797 | |
1798 | if (f->current_offset <= 0) | |
de190aef | 1799 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1800 | |
de190aef | 1801 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1802 | if (r < 0) |
1803 | return r; | |
1804 | ||
1805 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1806 | return 0; |
3fbf9cbb LP |
1807 | } |
1808 | ||
a5344d2c | 1809 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1810 | Object *o; |
1811 | JournalFile *f; | |
1812 | int r; | |
1813 | sd_id128_t id; | |
1814 | ||
1ae464e0 TA |
1815 | assert_return(j, -EINVAL); |
1816 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1817 | |
1818 | f = j->current_file; | |
1819 | if (!f) | |
de190aef | 1820 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1821 | |
1822 | if (f->current_offset <= 0) | |
de190aef | 1823 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1824 | |
de190aef | 1825 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1826 | if (r < 0) |
1827 | return r; | |
1828 | ||
de190aef LP |
1829 | if (ret_boot_id) |
1830 | *ret_boot_id = o->entry.boot_id; | |
1831 | else { | |
1832 | r = sd_id128_get_boot(&id); | |
1833 | if (r < 0) | |
1834 | return r; | |
3fbf9cbb | 1835 | |
de190aef | 1836 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1837 | return -ESTALE; |
de190aef | 1838 | } |
3fbf9cbb | 1839 | |
14a65d65 LP |
1840 | if (ret) |
1841 | *ret = le64toh(o->entry.monotonic); | |
1842 | ||
de190aef | 1843 | return 0; |
3fbf9cbb LP |
1844 | } |
1845 | ||
362a3f81 LP |
1846 | static bool field_is_valid(const char *field) { |
1847 | const char *p; | |
1848 | ||
1849 | assert(field); | |
1850 | ||
1851 | if (isempty(field)) | |
1852 | return false; | |
1853 | ||
1854 | if (startswith(field, "__")) | |
1855 | return false; | |
1856 | ||
1857 | for (p = field; *p; p++) { | |
1858 | ||
1859 | if (*p == '_') | |
1860 | continue; | |
1861 | ||
1862 | if (*p >= 'A' && *p <= 'Z') | |
1863 | continue; | |
1864 | ||
1865 | if (*p >= '0' && *p <= '9') | |
1866 | continue; | |
1867 | ||
1868 | return false; | |
1869 | } | |
1870 | ||
1871 | return true; | |
1872 | } | |
1873 | ||
a5344d2c | 1874 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1875 | JournalFile *f; |
1876 | uint64_t i, n; | |
1877 | size_t field_length; | |
1878 | int r; | |
1879 | Object *o; | |
1880 | ||
1ae464e0 TA |
1881 | assert_return(j, -EINVAL); |
1882 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1883 | assert_return(field, -EINVAL); | |
1884 | assert_return(data, -EINVAL); | |
1885 | assert_return(size, -EINVAL); | |
1886 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
1887 | |
1888 | f = j->current_file; | |
1889 | if (!f) | |
de190aef | 1890 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1891 | |
1892 | if (f->current_offset <= 0) | |
de190aef | 1893 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1894 | |
de190aef | 1895 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1896 | if (r < 0) |
1897 | return r; | |
1898 | ||
1899 | field_length = strlen(field); | |
1900 | ||
1901 | n = journal_file_entry_n_items(o); | |
1902 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1903 | uint64_t p, l; |
1904 | le64_t le_hash; | |
3fbf9cbb | 1905 | size_t t; |
1ec7120e | 1906 | int compression; |
3fbf9cbb LP |
1907 | |
1908 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1909 | le_hash = o->entry.items[i].hash; |
de190aef | 1910 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1911 | if (r < 0) |
1912 | return r; | |
1913 | ||
de190aef | 1914 | if (le_hash != o->data.hash) |
de7b95cd LP |
1915 | return -EBADMSG; |
1916 | ||
3fbf9cbb LP |
1917 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1918 | ||
1ec7120e | 1919 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
1920 | if (compression) { |
1921 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
1922 | if (decompress_startswith(compression, | |
1923 | o->data.payload, l, | |
1924 | &f->compress_buffer, &f->compress_buffer_size, | |
1925 | field, field_length, '=')) { | |
1926 | ||
fa1c4b51 | 1927 | size_t rsize; |
3b1a55e1 ZJS |
1928 | |
1929 | r = decompress_blob(compression, | |
1930 | o->data.payload, l, | |
1931 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
1932 | j->data_threshold); | |
1933 | if (r < 0) | |
1934 | return r; | |
807e17f0 | 1935 | |
3b1a55e1 ZJS |
1936 | *data = f->compress_buffer; |
1937 | *size = (size_t) rsize; | |
807e17f0 | 1938 | |
3b1a55e1 ZJS |
1939 | return 0; |
1940 | } | |
1941 | #else | |
1942 | return -EPROTONOSUPPORT; | |
1943 | #endif | |
807e17f0 LP |
1944 | } else if (l >= field_length+1 && |
1945 | memcmp(o->data.payload, field, field_length) == 0 && | |
1946 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1947 | |
161e54f8 | 1948 | t = (size_t) l; |
3fbf9cbb | 1949 | |
161e54f8 LP |
1950 | if ((uint64_t) t != l) |
1951 | return -E2BIG; | |
3fbf9cbb | 1952 | |
161e54f8 LP |
1953 | *data = o->data.payload; |
1954 | *size = t; | |
3fbf9cbb | 1955 | |
99613ec5 | 1956 | return 0; |
161e54f8 | 1957 | } |
3fbf9cbb | 1958 | |
de190aef | 1959 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1960 | if (r < 0) |
1961 | return r; | |
3fbf9cbb LP |
1962 | } |
1963 | ||
de190aef | 1964 | return -ENOENT; |
3fbf9cbb LP |
1965 | } |
1966 | ||
93b73b06 | 1967 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
1968 | size_t t; |
1969 | uint64_t l; | |
3b1a55e1 | 1970 | int compression; |
3c1668da LP |
1971 | |
1972 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
1973 | t = (size_t) l; | |
1974 | ||
1975 | /* We can't read objects larger than 4G on a 32bit machine */ | |
1976 | if ((uint64_t) t != l) | |
1977 | return -E2BIG; | |
1978 | ||
1ec7120e ZJS |
1979 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
1980 | if (compression) { | |
3b1a55e1 | 1981 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 1982 | size_t rsize; |
3b1a55e1 | 1983 | int r; |
3c1668da | 1984 | |
1ec7120e ZJS |
1985 | r = decompress_blob(compression, |
1986 | o->data.payload, l, &f->compress_buffer, | |
1987 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
1988 | if (r < 0) | |
1989 | return r; | |
3c1668da LP |
1990 | |
1991 | *data = f->compress_buffer; | |
1992 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
1993 | #else |
1994 | return -EPROTONOSUPPORT; | |
1995 | #endif | |
3c1668da LP |
1996 | } else { |
1997 | *data = o->data.payload; | |
1998 | *size = t; | |
1999 | } | |
2000 | ||
2001 | return 0; | |
2002 | } | |
2003 | ||
a5344d2c | 2004 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2005 | JournalFile *f; |
3c1668da | 2006 | uint64_t p, n; |
4fd052ae | 2007 | le64_t le_hash; |
3fbf9cbb LP |
2008 | int r; |
2009 | Object *o; | |
2010 | ||
1ae464e0 TA |
2011 | assert_return(j, -EINVAL); |
2012 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2013 | assert_return(data, -EINVAL); | |
2014 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2015 | |
2016 | f = j->current_file; | |
2017 | if (!f) | |
de190aef | 2018 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2019 | |
2020 | if (f->current_offset <= 0) | |
de190aef | 2021 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2022 | |
de190aef | 2023 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2024 | if (r < 0) |
2025 | return r; | |
2026 | ||
2027 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2028 | if (j->current_field >= n) |
3fbf9cbb LP |
2029 | return 0; |
2030 | ||
7210bfb3 | 2031 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2032 | le_hash = o->entry.items[j->current_field].hash; |
2033 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2034 | if (r < 0) |
2035 | return r; | |
2036 | ||
de190aef | 2037 | if (le_hash != o->data.hash) |
de7b95cd LP |
2038 | return -EBADMSG; |
2039 | ||
93b73b06 | 2040 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2041 | if (r < 0) |
2042 | return r; | |
3fbf9cbb | 2043 | |
7210bfb3 | 2044 | j->current_field ++; |
3fbf9cbb LP |
2045 | |
2046 | return 1; | |
2047 | } | |
c2373f84 | 2048 | |
a5344d2c LP |
2049 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2050 | if (!j) | |
2051 | return; | |
8725d60a LP |
2052 | |
2053 | j->current_field = 0; | |
c2373f84 | 2054 | } |
50f20cfd | 2055 | |
a5344d2c | 2056 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2057 | int r; |
2058 | ||
1ae464e0 TA |
2059 | assert_return(j, -EINVAL); |
2060 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2061 | |
a963990f LP |
2062 | if (j->inotify_fd >= 0) |
2063 | return j->inotify_fd; | |
2064 | ||
2065 | r = allocate_inotify(j); | |
2066 | if (r < 0) | |
2067 | return r; | |
2068 | ||
2069 | /* Iterate through all dirs again, to add them to the | |
2070 | * inotify */ | |
5302ebe1 ZJS |
2071 | if (j->no_new_files) |
2072 | r = add_current_paths(j); | |
2073 | else if (j->path) | |
89739579 | 2074 | r = add_root_directory(j, j->path); |
7827b1a1 | 2075 | else |
89739579 | 2076 | r = add_search_paths(j); |
a963990f LP |
2077 | if (r < 0) |
2078 | return r; | |
2079 | ||
50f20cfd LP |
2080 | return j->inotify_fd; |
2081 | } | |
2082 | ||
ee531d94 LP |
2083 | _public_ int sd_journal_get_events(sd_journal *j) { |
2084 | int fd; | |
2085 | ||
1ae464e0 TA |
2086 | assert_return(j, -EINVAL); |
2087 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2088 | |
2089 | fd = sd_journal_get_fd(j); | |
2090 | if (fd < 0) | |
2091 | return fd; | |
2092 | ||
2093 | return POLLIN; | |
2094 | } | |
2095 | ||
39c155ea LP |
2096 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2097 | int fd; | |
2098 | ||
1ae464e0 TA |
2099 | assert_return(j, -EINVAL); |
2100 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2101 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2102 | |
2103 | fd = sd_journal_get_fd(j); | |
2104 | if (fd < 0) | |
2105 | return fd; | |
2106 | ||
2107 | if (!j->on_network) { | |
2108 | *timeout_usec = (uint64_t) -1; | |
2109 | return 0; | |
2110 | } | |
2111 | ||
2112 | /* If we are on the network we need to regularly check for | |
2113 | * changes manually */ | |
2114 | ||
2115 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2116 | return 1; | |
2117 | } | |
2118 | ||
50f20cfd | 2119 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2120 | Directory *d; |
50f20cfd LP |
2121 | int r; |
2122 | ||
2123 | assert(j); | |
2124 | assert(e); | |
2125 | ||
2126 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2127 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2128 | if (d) { | |
2129 | sd_id128_t id; | |
50f20cfd | 2130 | |
de2c3907 LP |
2131 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2132 | (endswith(e->name, ".journal") || | |
2133 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2134 | |
2135 | /* Event for a journal file */ | |
2136 | ||
2137 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2138 | r = add_file(j, d->path, e->name); |
6fe391c5 | 2139 | if (r < 0) { |
c33b3297 MS |
2140 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
2141 | d->path, e->name); | |
3ac251b8 | 2142 | set_put_error(j, r); |
6fe391c5 | 2143 | } |
a963990f | 2144 | |
5e6870ea | 2145 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2146 | |
a963990f | 2147 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2148 | if (r < 0) |
da927ba9 | 2149 | log_debug_errno(r, "Failed to remove file %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2150 | } |
2151 | ||
a963990f | 2152 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2153 | |
a963990f | 2154 | /* Event for a subdirectory */ |
50f20cfd | 2155 | |
a963990f LP |
2156 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2157 | r = remove_directory(j, d); | |
50f20cfd | 2158 | if (r < 0) |
da927ba9 | 2159 | log_debug_errno(r, "Failed to remove directory %s: %m", d->path); |
50f20cfd LP |
2160 | } |
2161 | ||
50f20cfd | 2162 | |
a963990f | 2163 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2164 | |
a963990f | 2165 | /* Event for root directory */ |
50f20cfd | 2166 | |
a963990f LP |
2167 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2168 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2169 | if (r < 0) |
da927ba9 | 2170 | log_debug_errno(r, "Failed to add directory %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2171 | } |
2172 | } | |
2173 | ||
2174 | return; | |
2175 | } | |
2176 | ||
2177 | if (e->mask & IN_IGNORED) | |
2178 | return; | |
2179 | ||
2180 | log_warning("Unknown inotify event."); | |
2181 | } | |
2182 | ||
a963990f LP |
2183 | static int determine_change(sd_journal *j) { |
2184 | bool b; | |
2185 | ||
2186 | assert(j); | |
2187 | ||
2188 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2189 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2190 | ||
2191 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2192 | } | |
2193 | ||
a5344d2c | 2194 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2195 | bool got_something = false; |
50f20cfd | 2196 | |
1ae464e0 TA |
2197 | assert_return(j, -EINVAL); |
2198 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2199 | |
39c155ea LP |
2200 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2201 | ||
50f20cfd | 2202 | for (;;) { |
f7c1ad4f | 2203 | uint8_t buffer[INOTIFY_EVENT_MAX] _alignas_(struct inotify_event); |
50f20cfd LP |
2204 | struct inotify_event *e; |
2205 | ssize_t l; | |
2206 | ||
2207 | l = read(j->inotify_fd, buffer, sizeof(buffer)); | |
2208 | if (l < 0) { | |
a963990f LP |
2209 | if (errno == EAGAIN || errno == EINTR) |
2210 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2211 | |
2212 | return -errno; | |
2213 | } | |
2214 | ||
a963990f LP |
2215 | got_something = true; |
2216 | ||
f7c1ad4f | 2217 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2218 | process_inotify_event(j, e); |
50f20cfd LP |
2219 | } |
2220 | } | |
6ad1d1c3 | 2221 | |
e02d1cf7 | 2222 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2223 | int r; |
39c155ea | 2224 | uint64_t t; |
e02d1cf7 | 2225 | |
1ae464e0 TA |
2226 | assert_return(j, -EINVAL); |
2227 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2228 | |
a963990f LP |
2229 | if (j->inotify_fd < 0) { |
2230 | ||
2231 | /* This is the first invocation, hence create the | |
2232 | * inotify watch */ | |
2233 | r = sd_journal_get_fd(j); | |
2234 | if (r < 0) | |
2235 | return r; | |
2236 | ||
2237 | /* The journal might have changed since the context | |
2238 | * object was created and we weren't watching before, | |
2239 | * hence don't wait for anything, and return | |
2240 | * immediately. */ | |
2241 | return determine_change(j); | |
2242 | } | |
2243 | ||
39c155ea LP |
2244 | r = sd_journal_get_timeout(j, &t); |
2245 | if (r < 0) | |
2246 | return r; | |
2247 | ||
2248 | if (t != (uint64_t) -1) { | |
2249 | usec_t n; | |
2250 | ||
2251 | n = now(CLOCK_MONOTONIC); | |
2252 | t = t > n ? t - n : 0; | |
85210bff | 2253 | |
39c155ea LP |
2254 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2255 | timeout_usec = t; | |
85210bff LP |
2256 | } |
2257 | ||
a963990f LP |
2258 | do { |
2259 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2260 | } while (r == -EINTR); | |
e02d1cf7 LP |
2261 | |
2262 | if (r < 0) | |
2263 | return r; | |
2264 | ||
a963990f | 2265 | return sd_journal_process(j); |
e02d1cf7 LP |
2266 | } |
2267 | ||
08984293 LP |
2268 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2269 | Iterator i; | |
2270 | JournalFile *f; | |
2271 | bool first = true; | |
581483bf | 2272 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2273 | int r; |
2274 | ||
1ae464e0 TA |
2275 | assert_return(j, -EINVAL); |
2276 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2277 | assert_return(from || to, -EINVAL); | |
2278 | assert_return(from != to, -EINVAL); | |
08984293 | 2279 | |
c1f906bd | 2280 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2281 | usec_t fr, t; |
2282 | ||
2283 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2284 | if (r == -ENOENT) |
2285 | continue; | |
08984293 LP |
2286 | if (r < 0) |
2287 | return r; | |
2288 | if (r == 0) | |
2289 | continue; | |
2290 | ||
2291 | if (first) { | |
581483bf LP |
2292 | fmin = fr; |
2293 | tmax = t; | |
08984293 LP |
2294 | first = false; |
2295 | } else { | |
581483bf LP |
2296 | fmin = MIN(fr, fmin); |
2297 | tmax = MAX(t, tmax); | |
08984293 LP |
2298 | } |
2299 | } | |
2300 | ||
581483bf LP |
2301 | if (from) |
2302 | *from = fmin; | |
2303 | if (to) | |
2304 | *to = tmax; | |
2305 | ||
08984293 LP |
2306 | return first ? 0 : 1; |
2307 | } | |
2308 | ||
2309 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2310 | Iterator i; | |
2311 | JournalFile *f; | |
1651e2c6 | 2312 | bool found = false; |
08984293 LP |
2313 | int r; |
2314 | ||
1ae464e0 TA |
2315 | assert_return(j, -EINVAL); |
2316 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2317 | assert_return(from || to, -EINVAL); | |
2318 | assert_return(from != to, -EINVAL); | |
08984293 | 2319 | |
c1f906bd | 2320 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2321 | usec_t fr, t; |
2322 | ||
2323 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2324 | if (r == -ENOENT) |
2325 | continue; | |
08984293 LP |
2326 | if (r < 0) |
2327 | return r; | |
2328 | if (r == 0) | |
2329 | continue; | |
2330 | ||
1651e2c6 | 2331 | if (found) { |
08984293 | 2332 | if (from) |
1651e2c6 | 2333 | *from = MIN(fr, *from); |
08984293 | 2334 | if (to) |
1651e2c6 | 2335 | *to = MAX(t, *to); |
08984293 LP |
2336 | } else { |
2337 | if (from) | |
1651e2c6 | 2338 | *from = fr; |
08984293 | 2339 | if (to) |
1651e2c6 ZJS |
2340 | *to = t; |
2341 | found = true; | |
08984293 LP |
2342 | } |
2343 | } | |
2344 | ||
1651e2c6 | 2345 | return found; |
08984293 LP |
2346 | } |
2347 | ||
dca6219e LP |
2348 | void journal_print_header(sd_journal *j) { |
2349 | Iterator i; | |
2350 | JournalFile *f; | |
2351 | bool newline = false; | |
2352 | ||
2353 | assert(j); | |
2354 | ||
c1f906bd | 2355 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2356 | if (newline) |
2357 | putchar('\n'); | |
2358 | else | |
2359 | newline = true; | |
2360 | ||
2361 | journal_file_print_header(f); | |
2362 | } | |
2363 | } | |
08984293 | 2364 | |
a1a03e30 LP |
2365 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2366 | Iterator i; | |
2367 | JournalFile *f; | |
2368 | uint64_t sum = 0; | |
2369 | ||
1ae464e0 TA |
2370 | assert_return(j, -EINVAL); |
2371 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2372 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2373 | |
c1f906bd | 2374 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2375 | struct stat st; |
2376 | ||
2377 | if (fstat(f->fd, &st) < 0) | |
2378 | return -errno; | |
2379 | ||
2380 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2381 | } | |
2382 | ||
2383 | *bytes = sum; | |
2384 | return 0; | |
2385 | } | |
2386 | ||
3c1668da LP |
2387 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2388 | char *f; | |
2389 | ||
1ae464e0 TA |
2390 | assert_return(j, -EINVAL); |
2391 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2392 | assert_return(!isempty(field), -EINVAL); | |
2393 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2394 | |
2395 | f = strdup(field); | |
2396 | if (!f) | |
2397 | return -ENOMEM; | |
2398 | ||
2399 | free(j->unique_field); | |
2400 | j->unique_field = f; | |
2401 | j->unique_file = NULL; | |
2402 | j->unique_offset = 0; | |
360af4cf | 2403 | j->unique_file_lost = false; |
3c1668da LP |
2404 | |
2405 | return 0; | |
2406 | } | |
2407 | ||
2408 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2409 | size_t k; |
19a2bd80 | 2410 | |
1ae464e0 TA |
2411 | assert_return(j, -EINVAL); |
2412 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2413 | assert_return(data, -EINVAL); | |
2414 | assert_return(l, -EINVAL); | |
2415 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2416 | |
3c1668da | 2417 | k = strlen(j->unique_field); |
19a2bd80 | 2418 | |
3c1668da | 2419 | if (!j->unique_file) { |
360af4cf ZJS |
2420 | if (j->unique_file_lost) |
2421 | return 0; | |
2422 | ||
c1f906bd | 2423 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2424 | if (!j->unique_file) |
2425 | return 0; | |
360af4cf | 2426 | |
3c1668da LP |
2427 | j->unique_offset = 0; |
2428 | } | |
19a2bd80 | 2429 | |
3c1668da LP |
2430 | for (;;) { |
2431 | JournalFile *of; | |
2432 | Iterator i; | |
ae97089d | 2433 | Object *o; |
3c1668da LP |
2434 | const void *odata; |
2435 | size_t ol; | |
2436 | bool found; | |
ae97089d | 2437 | int r; |
3c1668da | 2438 | |
bdc02927 | 2439 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2440 | if (j->unique_offset == 0) { |
2441 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2442 | if (r < 0) | |
2443 | return r; | |
2444 | ||
2445 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2446 | } else { | |
2447 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2448 | if (r < 0) | |
2449 | return r; | |
2450 | ||
2451 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2452 | } | |
2453 | ||
2454 | /* We reached the end of the list? Then start again, with the next file */ | |
2455 | if (j->unique_offset == 0) { | |
c1f906bd | 2456 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2457 | if (!j->unique_file) |
3c1668da LP |
2458 | return 0; |
2459 | ||
3c1668da LP |
2460 | continue; |
2461 | } | |
2462 | ||
d05089d8 MS |
2463 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2464 | * instead, so that we can look at this data object at the same | |
3c1668da | 2465 | * time as one on another file */ |
d05089d8 | 2466 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2467 | if (r < 0) |
2468 | return r; | |
2469 | ||
2470 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2471 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2472 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2473 | j->unique_file->path, j->unique_offset, |
2474 | o->object.type, OBJECT_DATA); | |
3c1668da | 2475 | return -EBADMSG; |
ae97089d ZJS |
2476 | } |
2477 | ||
93b73b06 | 2478 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2479 | if (r < 0) |
2480 | return r; | |
2481 | ||
0f99f74a ZJS |
2482 | /* Check if we have at least the field name and "=". */ |
2483 | if (ol <= k) { | |
2484 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2485 | j->unique_file->path, j->unique_offset, | |
2486 | ol, k + 1); | |
2487 | return -EBADMSG; | |
2488 | } | |
2489 | ||
2490 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2491 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2492 | j->unique_file->path, j->unique_offset, | |
2493 | j->unique_field); | |
2494 | return -EBADMSG; | |
2495 | } | |
2496 | ||
3c1668da LP |
2497 | /* OK, now let's see if we already returned this data |
2498 | * object by checking if it exists in the earlier | |
2499 | * traversed files. */ | |
2500 | found = false; | |
c1f906bd | 2501 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2502 | Object *oo; |
2503 | uint64_t op; | |
2504 | ||
2505 | if (of == j->unique_file) | |
2506 | break; | |
2507 | ||
2508 | /* Skip this file it didn't have any fields | |
2509 | * indexed */ | |
2510 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2511 | le64toh(of->header->n_fields) <= 0) | |
2512 | continue; | |
2513 | ||
2514 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2515 | if (r < 0) | |
2516 | return r; | |
2517 | ||
2518 | if (r > 0) | |
2519 | found = true; | |
2520 | } | |
2521 | ||
06cc69d4 JJ |
2522 | if (found) |
2523 | continue; | |
2524 | ||
93b73b06 | 2525 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2526 | if (r < 0) |
2527 | return r; | |
2528 | ||
2529 | return 1; | |
2530 | } | |
2531 | } | |
2532 | ||
115646c7 | 2533 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2534 | if (!j) |
2535 | return; | |
2536 | ||
2537 | j->unique_file = NULL; | |
2538 | j->unique_offset = 0; | |
360af4cf | 2539 | j->unique_file_lost = false; |
3c1668da | 2540 | } |
85210bff LP |
2541 | |
2542 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
1ae464e0 TA |
2543 | assert_return(j, -EINVAL); |
2544 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2545 | |
2546 | return !j->on_network; | |
2547 | } | |
d4205751 LP |
2548 | |
2549 | static char *lookup_field(const char *field, void *userdata) { | |
2550 | sd_journal *j = userdata; | |
2551 | const void *data; | |
2552 | size_t size, d; | |
2553 | int r; | |
2554 | ||
2555 | assert(field); | |
2556 | assert(j); | |
2557 | ||
2558 | r = sd_journal_get_data(j, field, &data, &size); | |
2559 | if (r < 0 || | |
2560 | size > REPLACE_VAR_MAX) | |
2561 | return strdup(field); | |
2562 | ||
2563 | d = strlen(field) + 1; | |
2564 | ||
2565 | return strndup((const char*) data + d, size - d); | |
2566 | } | |
2567 | ||
2568 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2569 | const void *data; | |
2570 | size_t size; | |
2571 | sd_id128_t id; | |
2572 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2573 | char *t; | |
2574 | int r; | |
2575 | ||
1ae464e0 TA |
2576 | assert_return(j, -EINVAL); |
2577 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2578 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2579 | |
2580 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2581 | if (r < 0) | |
2582 | return r; | |
2583 | ||
2584 | cid = strndup((const char*) data + 11, size - 11); | |
2585 | if (!cid) | |
2586 | return -ENOMEM; | |
2587 | ||
2588 | r = sd_id128_from_string(cid, &id); | |
2589 | if (r < 0) | |
2590 | return r; | |
2591 | ||
844ec79b | 2592 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2593 | if (r < 0) |
2594 | return r; | |
2595 | ||
2596 | t = replace_var(text, lookup_field, j); | |
2597 | if (!t) | |
2598 | return -ENOMEM; | |
2599 | ||
2600 | *ret = t; | |
2601 | return 0; | |
2602 | } | |
8f1e860f LP |
2603 | |
2604 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2605 | assert_return(ret, -EINVAL); |
8f1e860f | 2606 | |
844ec79b | 2607 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2608 | } |
93b73b06 LP |
2609 | |
2610 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2611 | assert_return(j, -EINVAL); |
2612 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2613 | |
2614 | j->data_threshold = sz; | |
2615 | return 0; | |
2616 | } | |
2617 | ||
2618 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2619 | assert_return(j, -EINVAL); |
2620 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2621 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2622 | |
2623 | *sz = j->data_threshold; | |
2624 | return 0; | |
2625 | } |