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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) |
8f9b6cd9 LP |
90 | f->current_offset = 0; |
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 | ||
87011c25 ZJS |
117 | static void set_location(sd_journal *j, LocationType type, JournalFile *f, Object *o, |
118 | direction_t direction, uint64_t offset) { | |
de190aef | 119 | assert(j); |
a87247dd | 120 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
121 | assert(f); |
122 | assert(o); | |
123 | ||
a87247dd | 124 | init_location(&j->current_location, type, f, o); |
de190aef LP |
125 | |
126 | j->current_file = f; | |
127 | j->current_field = 0; | |
128 | ||
87011c25 | 129 | f->last_direction = direction; |
de190aef LP |
130 | f->current_offset = offset; |
131 | } | |
132 | ||
cbdca852 LP |
133 | static int match_is_valid(const void *data, size_t size) { |
134 | const char *b, *p; | |
135 | ||
136 | assert(data); | |
137 | ||
138 | if (size < 2) | |
139 | return false; | |
140 | ||
141 | if (startswith(data, "__")) | |
142 | return false; | |
143 | ||
144 | b = data; | |
145 | for (p = b; p < b + size; p++) { | |
146 | ||
147 | if (*p == '=') | |
148 | return p > b; | |
149 | ||
150 | if (*p == '_') | |
151 | continue; | |
152 | ||
153 | if (*p >= 'A' && *p <= 'Z') | |
154 | continue; | |
155 | ||
156 | if (*p >= '0' && *p <= '9') | |
157 | continue; | |
158 | ||
159 | return false; | |
160 | } | |
161 | ||
162 | return false; | |
163 | } | |
164 | ||
165 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
166 | const uint8_t *a = _a, *b = _b; |
167 | size_t j; | |
de190aef LP |
168 | |
169 | for (j = 0; j < s && j < t; j++) { | |
170 | ||
de190aef | 171 | if (a[j] != b[j]) |
cbdca852 | 172 | return false; |
de190aef | 173 | |
cbdca852 LP |
174 | if (a[j] == '=') |
175 | return true; | |
de190aef LP |
176 | } |
177 | ||
bc302926 | 178 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
179 | } |
180 | ||
181 | static Match *match_new(Match *p, MatchType t) { | |
182 | Match *m; | |
183 | ||
184 | m = new0(Match, 1); | |
185 | if (!m) | |
186 | return NULL; | |
187 | ||
188 | m->type = t; | |
189 | ||
190 | if (p) { | |
191 | m->parent = p; | |
71fda00f | 192 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
193 | } |
194 | ||
195 | return m; | |
196 | } | |
197 | ||
198 | static void match_free(Match *m) { | |
199 | assert(m); | |
200 | ||
201 | while (m->matches) | |
202 | match_free(m->matches); | |
203 | ||
204 | if (m->parent) | |
71fda00f | 205 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
206 | |
207 | free(m->data); | |
208 | free(m); | |
209 | } | |
210 | ||
211 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 212 | if (!m || m->matches) |
cbdca852 LP |
213 | return; |
214 | ||
215 | match_free(m); | |
de190aef LP |
216 | } |
217 | ||
a5344d2c | 218 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 219 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 220 | le64_t le_hash; |
87d2c1ff | 221 | |
1ae464e0 TA |
222 | assert_return(j, -EINVAL); |
223 | assert_return(!journal_pid_changed(j), -ECHILD); | |
224 | assert_return(data, -EINVAL); | |
cbdca852 LP |
225 | |
226 | if (size == 0) | |
227 | size = strlen(data); | |
228 | ||
1ae464e0 | 229 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 230 | |
cd34b3c6 HH |
231 | /* level 0: AND term |
232 | * level 1: OR terms | |
233 | * level 2: AND terms | |
234 | * level 3: OR terms | |
235 | * level 4: concrete matches */ | |
cbdca852 LP |
236 | |
237 | if (!j->level0) { | |
cd34b3c6 | 238 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
239 | if (!j->level0) |
240 | return -ENOMEM; | |
241 | } | |
242 | ||
243 | if (!j->level1) { | |
cd34b3c6 | 244 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
245 | if (!j->level1) |
246 | return -ENOMEM; | |
247 | } | |
248 | ||
cd34b3c6 HH |
249 | if (!j->level2) { |
250 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
251 | if (!j->level2) | |
252 | return -ENOMEM; | |
253 | } | |
254 | ||
255 | assert(j->level0->type == MATCH_AND_TERM); | |
256 | assert(j->level1->type == MATCH_OR_TERM); | |
257 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 258 | |
de190aef LP |
259 | le_hash = htole64(hash64(data, size)); |
260 | ||
cd34b3c6 HH |
261 | LIST_FOREACH(matches, l3, j->level2->matches) { |
262 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 263 | |
cd34b3c6 HH |
264 | LIST_FOREACH(matches, l4, l3->matches) { |
265 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 266 | |
cbdca852 LP |
267 | /* Exactly the same match already? Then ignore |
268 | * this addition */ | |
cd34b3c6 HH |
269 | if (l4->le_hash == le_hash && |
270 | l4->size == size && | |
271 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
272 | return 0; |
273 | ||
274 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
275 | if (same_field(data, size, l4->data, l4->size)) { |
276 | add_here = l3; | |
cbdca852 LP |
277 | break; |
278 | } | |
279 | } | |
280 | ||
281 | if (add_here) | |
282 | break; | |
de190aef LP |
283 | } |
284 | ||
cbdca852 | 285 | if (!add_here) { |
cd34b3c6 | 286 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
287 | if (!add_here) |
288 | goto fail; | |
289 | } | |
290 | ||
291 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 292 | if (!m) |
cbdca852 | 293 | goto fail; |
87d2c1ff | 294 | |
cbdca852 | 295 | m->le_hash = le_hash; |
1cc101f1 | 296 | m->size = size; |
cbdca852 LP |
297 | m->data = memdup(data, size); |
298 | if (!m->data) | |
299 | goto fail; | |
300 | ||
301 | detach_location(j); | |
302 | ||
303 | return 0; | |
304 | ||
305 | fail: | |
c5a10d9c ZJS |
306 | match_free_if_empty(add_here); |
307 | match_free_if_empty(j->level2); | |
308 | match_free_if_empty(j->level1); | |
309 | match_free_if_empty(j->level0); | |
cbdca852 LP |
310 | |
311 | return -ENOMEM; | |
312 | } | |
313 | ||
cd34b3c6 | 314 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
315 | assert_return(j, -EINVAL); |
316 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 317 | |
cbdca852 LP |
318 | if (!j->level0) |
319 | return 0; | |
320 | ||
321 | if (!j->level1) | |
322 | return 0; | |
323 | ||
324 | if (!j->level1->matches) | |
325 | return 0; | |
326 | ||
cd34b3c6 HH |
327 | j->level1 = NULL; |
328 | j->level2 = NULL; | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
334 | assert_return(j, -EINVAL); |
335 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
336 | |
337 | if (!j->level0) | |
338 | return 0; | |
339 | ||
340 | if (!j->level1) | |
341 | return 0; | |
342 | ||
343 | if (!j->level2) | |
344 | return 0; | |
345 | ||
346 | if (!j->level2->matches) | |
347 | return 0; | |
cbdca852 | 348 | |
cd34b3c6 | 349 | j->level2 = NULL; |
cbdca852 LP |
350 | return 0; |
351 | } | |
352 | ||
353 | static char *match_make_string(Match *m) { | |
354 | char *p, *r; | |
355 | Match *i; | |
356 | bool enclose = false; | |
357 | ||
358 | if (!m) | |
4ad16808 | 359 | return strdup("none"); |
cbdca852 LP |
360 | |
361 | if (m->type == MATCH_DISCRETE) | |
362 | return strndup(m->data, m->size); | |
363 | ||
364 | p = NULL; | |
365 | LIST_FOREACH(matches, i, m->matches) { | |
366 | char *t, *k; | |
367 | ||
368 | t = match_make_string(i); | |
369 | if (!t) { | |
370 | free(p); | |
371 | return NULL; | |
372 | } | |
373 | ||
374 | if (p) { | |
b7def684 | 375 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
376 | free(p); |
377 | free(t); | |
378 | ||
379 | if (!k) | |
380 | return NULL; | |
381 | ||
382 | p = k; | |
383 | ||
384 | enclose = true; | |
bc302926 | 385 | } else |
cbdca852 | 386 | p = t; |
87d2c1ff LP |
387 | } |
388 | ||
cbdca852 | 389 | if (enclose) { |
b7def684 | 390 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
391 | free(p); |
392 | return r; | |
393 | } | |
87d2c1ff | 394 | |
cbdca852 LP |
395 | return p; |
396 | } | |
de7b95cd | 397 | |
cbdca852 LP |
398 | char *journal_make_match_string(sd_journal *j) { |
399 | assert(j); | |
8f9b6cd9 | 400 | |
cbdca852 | 401 | return match_make_string(j->level0); |
87d2c1ff LP |
402 | } |
403 | ||
a5344d2c LP |
404 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
405 | if (!j) | |
406 | return; | |
87d2c1ff | 407 | |
cbdca852 LP |
408 | if (j->level0) |
409 | match_free(j->level0); | |
de7b95cd | 410 | |
cd34b3c6 | 411 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 412 | |
de190aef | 413 | detach_location(j); |
87d2c1ff LP |
414 | } |
415 | ||
468b21de | 416 | static int compare_entry_order(JournalFile *af, Object *_ao, |
5afbe712 | 417 | JournalFile *bf, uint64_t bp) { |
87d2c1ff | 418 | |
cec736d2 | 419 | uint64_t a, b; |
468b21de LP |
420 | Object *ao, *bo; |
421 | int r; | |
87d2c1ff | 422 | |
de190aef | 423 | assert(af); |
de190aef | 424 | assert(bf); |
468b21de LP |
425 | assert(_ao); |
426 | ||
427 | /* The mmap cache might invalidate the object from the first | |
428 | * file if we look at the one from the second file. Hence | |
429 | * temporarily copy the header of the first one, and look at | |
430 | * that only. */ | |
431 | ao = alloca(offsetof(EntryObject, items)); | |
432 | memcpy(ao, _ao, offsetof(EntryObject, items)); | |
433 | ||
434 | r = journal_file_move_to_object(bf, OBJECT_ENTRY, bp, &bo); | |
435 | if (r < 0) | |
436 | return strcmp(af->path, bf->path); | |
de190aef | 437 | |
ae2cc8ef | 438 | /* We operate on two different files here, hence we can access |
1cc101f1 LP |
439 | * two objects at the same time, which we normally can't. |
440 | * | |
441 | * If contents and timestamps match, these entries are | |
442 | * identical, even if the seqnum does not match */ | |
443 | ||
444 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id) && | |
445 | ao->entry.monotonic == bo->entry.monotonic && | |
446 | ao->entry.realtime == bo->entry.realtime && | |
447 | ao->entry.xor_hash == bo->entry.xor_hash) | |
448 | return 0; | |
ae2cc8ef | 449 | |
cec736d2 | 450 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { |
87d2c1ff | 451 | |
cec736d2 LP |
452 | /* If this is from the same seqnum source, compare |
453 | * seqnums */ | |
454 | a = le64toh(ao->entry.seqnum); | |
455 | b = le64toh(bo->entry.seqnum); | |
87d2c1ff | 456 | |
ae2cc8ef LP |
457 | if (a < b) |
458 | return -1; | |
459 | if (a > b) | |
460 | return 1; | |
1cc101f1 LP |
461 | |
462 | /* Wow! This is weird, different data but the same | |
463 | * seqnums? Something is borked, but let's make the | |
464 | * best of it and compare by time. */ | |
ae2cc8ef | 465 | } |
87d2c1ff | 466 | |
ae2cc8ef | 467 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id)) { |
87d2c1ff | 468 | |
73e231ab | 469 | /* If the boot id matches, compare monotonic time */ |
cec736d2 LP |
470 | a = le64toh(ao->entry.monotonic); |
471 | b = le64toh(bo->entry.monotonic); | |
87d2c1ff | 472 | |
ae2cc8ef LP |
473 | if (a < b) |
474 | return -1; | |
475 | if (a > b) | |
476 | return 1; | |
87d2c1ff LP |
477 | } |
478 | ||
73e231ab | 479 | /* Otherwise, compare UTC time */ |
ae2cc8ef | 480 | a = le64toh(ao->entry.realtime); |
c4aff78b | 481 | b = le64toh(bo->entry.realtime); |
ae2cc8ef LP |
482 | |
483 | if (a < b) | |
484 | return -1; | |
485 | if (a > b) | |
486 | return 1; | |
487 | ||
488 | /* Finally, compare by contents */ | |
489 | a = le64toh(ao->entry.xor_hash); | |
c4aff78b | 490 | b = le64toh(bo->entry.xor_hash); |
ae2cc8ef LP |
491 | |
492 | if (a < b) | |
493 | return -1; | |
494 | if (a > b) | |
495 | return 1; | |
496 | ||
497 | return 0; | |
87d2c1ff LP |
498 | } |
499 | ||
b7c88ab8 MS |
500 | static bool whole_file_precedes_location(JournalFile *f, Location *l, direction_t direction) { |
501 | assert(f); | |
502 | assert(l); | |
503 | ||
504 | if (l->type != LOCATION_DISCRETE && l->type != LOCATION_SEEK) | |
505 | return false; | |
506 | ||
507 | if (l->seqnum_set && sd_id128_equal(l->seqnum_id, f->header->seqnum_id)) | |
508 | return direction == DIRECTION_DOWN ? | |
509 | l->seqnum > le64toh(f->header->tail_entry_seqnum) : | |
510 | l->seqnum < le64toh(f->header->head_entry_seqnum); | |
511 | ||
512 | if (l->realtime_set) | |
513 | return direction == DIRECTION_DOWN ? | |
514 | l->realtime > le64toh(f->header->tail_entry_realtime) : | |
515 | l->realtime < le64toh(f->header->head_entry_realtime); | |
516 | ||
517 | return false; | |
518 | } | |
519 | ||
f8b5a3b7 MS |
520 | static bool file_may_have_preceding_entry(JournalFile *f, JournalFile *of, uint64_t op, direction_t direction) { |
521 | Object *o; | |
522 | int r; | |
523 | ||
524 | assert(f); | |
525 | assert(of); | |
526 | ||
527 | r = journal_file_move_to_object(of, OBJECT_ENTRY, op, &o); | |
528 | if (r < 0) | |
529 | return true; | |
530 | ||
531 | if (sd_id128_equal(f->header->seqnum_id, of->header->seqnum_id)) | |
532 | return direction == DIRECTION_DOWN ? | |
533 | le64toh(o->entry.seqnum) >= le64toh(f->header->head_entry_seqnum) : | |
534 | le64toh(o->entry.seqnum) <= le64toh(f->header->tail_entry_seqnum); | |
535 | ||
536 | return direction == DIRECTION_DOWN ? | |
537 | le64toh(o->entry.realtime) >= le64toh(f->header->head_entry_realtime) : | |
538 | le64toh(o->entry.realtime) <= le64toh(f->header->tail_entry_realtime); | |
539 | } | |
540 | ||
44a6b1b6 | 541 | _pure_ static int compare_with_location(JournalFile *af, Object *ao, Location *l) { |
de190aef LP |
542 | uint64_t a; |
543 | ||
544 | assert(af); | |
545 | assert(ao); | |
546 | assert(l); | |
a87247dd | 547 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
548 | |
549 | if (l->monotonic_set && | |
550 | sd_id128_equal(ao->entry.boot_id, l->boot_id) && | |
551 | l->realtime_set && | |
552 | le64toh(ao->entry.realtime) == l->realtime && | |
553 | l->xor_hash_set && | |
554 | le64toh(ao->entry.xor_hash) == l->xor_hash) | |
555 | return 0; | |
556 | ||
557 | if (l->seqnum_set && | |
558 | sd_id128_equal(af->header->seqnum_id, l->seqnum_id)) { | |
559 | ||
560 | a = le64toh(ao->entry.seqnum); | |
561 | ||
562 | if (a < l->seqnum) | |
563 | return -1; | |
564 | if (a > l->seqnum) | |
565 | return 1; | |
566 | } | |
567 | ||
568 | if (l->monotonic_set && | |
569 | sd_id128_equal(ao->entry.boot_id, l->boot_id)) { | |
570 | ||
571 | a = le64toh(ao->entry.monotonic); | |
572 | ||
573 | if (a < l->monotonic) | |
574 | return -1; | |
575 | if (a > l->monotonic) | |
576 | return 1; | |
577 | } | |
578 | ||
579 | if (l->realtime_set) { | |
580 | ||
581 | a = le64toh(ao->entry.realtime); | |
582 | ||
583 | if (a < l->realtime) | |
584 | return -1; | |
585 | if (a > l->realtime) | |
586 | return 1; | |
587 | } | |
588 | ||
589 | if (l->xor_hash_set) { | |
590 | a = le64toh(ao->entry.xor_hash); | |
591 | ||
592 | if (a < l->xor_hash) | |
593 | return -1; | |
594 | if (a > l->xor_hash) | |
595 | return 1; | |
596 | } | |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
cbdca852 LP |
601 | static int next_for_match( |
602 | sd_journal *j, | |
603 | Match *m, | |
604 | JournalFile *f, | |
605 | uint64_t after_offset, | |
606 | direction_t direction, | |
607 | Object **ret, | |
608 | uint64_t *offset) { | |
609 | ||
de7b95cd | 610 | int r; |
cbdca852 LP |
611 | uint64_t np = 0; |
612 | Object *n; | |
de7b95cd LP |
613 | |
614 | assert(j); | |
cbdca852 LP |
615 | assert(m); |
616 | assert(f); | |
de7b95cd | 617 | |
cbdca852 LP |
618 | if (m->type == MATCH_DISCRETE) { |
619 | uint64_t dp; | |
de190aef | 620 | |
cbdca852 | 621 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
622 | if (r <= 0) |
623 | return r; | |
624 | ||
cbdca852 | 625 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 626 | |
cbdca852 LP |
627 | } else if (m->type == MATCH_OR_TERM) { |
628 | Match *i; | |
de7b95cd | 629 | |
cbdca852 | 630 | /* Find the earliest match beyond after_offset */ |
de190aef | 631 | |
cbdca852 LP |
632 | LIST_FOREACH(matches, i, m->matches) { |
633 | uint64_t cp; | |
de190aef | 634 | |
cbdca852 | 635 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
636 | if (r < 0) |
637 | return r; | |
cbdca852 | 638 | else if (r > 0) { |
bc302926 | 639 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
640 | np = cp; |
641 | } | |
642 | } | |
b4e5f920 | 643 | |
bc302926 ZJS |
644 | if (np == 0) |
645 | return 0; | |
646 | ||
cbdca852 | 647 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 648 | Match *i, *last_moved; |
de190aef | 649 | |
cbdca852 | 650 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 651 | * this until we find an offset that matches for all |
cbdca852 | 652 | * matches. */ |
de190aef | 653 | |
cbdca852 LP |
654 | if (!m->matches) |
655 | return 0; | |
de7b95cd | 656 | |
2bc8ca0c ZJS |
657 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
658 | if (r <= 0) | |
659 | return r; | |
de190aef | 660 | |
2bc8ca0c ZJS |
661 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
662 | last_moved = m->matches; | |
de190aef | 663 | |
2bc8ca0c ZJS |
664 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
665 | uint64_t cp; | |
de190aef | 666 | |
2bc8ca0c ZJS |
667 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
668 | if (r <= 0) | |
669 | return r; | |
de190aef | 670 | |
2bc8ca0c ZJS |
671 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
672 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
673 | np = cp; | |
674 | last_moved = i; | |
de190aef | 675 | } |
2bc8ca0c | 676 | } |
cbdca852 | 677 | } |
de190aef | 678 | |
bc302926 | 679 | assert(np > 0); |
de190aef | 680 | |
cbdca852 LP |
681 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
682 | if (r < 0) | |
683 | return r; | |
de7b95cd | 684 | |
de190aef | 685 | if (ret) |
cbdca852 | 686 | *ret = n; |
de190aef | 687 | if (offset) |
cbdca852 | 688 | *offset = np; |
de190aef LP |
689 | |
690 | return 1; | |
691 | } | |
692 | ||
cbdca852 LP |
693 | static int find_location_for_match( |
694 | sd_journal *j, | |
695 | Match *m, | |
696 | JournalFile *f, | |
697 | direction_t direction, | |
698 | Object **ret, | |
699 | uint64_t *offset) { | |
700 | ||
de190aef | 701 | int r; |
de190aef LP |
702 | |
703 | assert(j); | |
cbdca852 | 704 | assert(m); |
de190aef | 705 | assert(f); |
de190aef | 706 | |
cbdca852 LP |
707 | if (m->type == MATCH_DISCRETE) { |
708 | uint64_t dp; | |
de190aef | 709 | |
cbdca852 | 710 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
711 | if (r <= 0) |
712 | return r; | |
713 | ||
cbdca852 | 714 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 715 | |
cbdca852 LP |
716 | if (j->current_location.type == LOCATION_HEAD) |
717 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
718 | if (j->current_location.type == LOCATION_TAIL) | |
719 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
720 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
721 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
722 | if (j->current_location.monotonic_set) { | |
723 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
724 | if (r != -ENOENT) | |
725 | return r; | |
726 | } | |
727 | if (j->current_location.realtime_set) | |
728 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 729 | |
cbdca852 | 730 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 731 | |
cbdca852 LP |
732 | } else if (m->type == MATCH_OR_TERM) { |
733 | uint64_t np = 0; | |
734 | Object *n; | |
735 | Match *i; | |
de7b95cd | 736 | |
cbdca852 | 737 | /* Find the earliest match */ |
de7b95cd | 738 | |
cbdca852 LP |
739 | LIST_FOREACH(matches, i, m->matches) { |
740 | uint64_t cp; | |
741 | ||
742 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
743 | if (r < 0) | |
744 | return r; | |
745 | else if (r > 0) { | |
746 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
747 | np = cp; | |
de190aef | 748 | } |
cbdca852 | 749 | } |
de190aef | 750 | |
cbdca852 LP |
751 | if (np == 0) |
752 | return 0; | |
de7b95cd | 753 | |
cbdca852 LP |
754 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
755 | if (r < 0) | |
756 | return r; | |
de7b95cd | 757 | |
cbdca852 LP |
758 | if (ret) |
759 | *ret = n; | |
760 | if (offset) | |
761 | *offset = np; | |
de190aef | 762 | |
cbdca852 | 763 | return 1; |
e892bd17 | 764 | |
cbdca852 LP |
765 | } else { |
766 | Match *i; | |
767 | uint64_t np = 0; | |
768 | ||
769 | assert(m->type == MATCH_AND_TERM); | |
770 | ||
771 | /* First jump to the last match, and then find the | |
772 | * next one where all matches match */ | |
773 | ||
774 | if (!m->matches) | |
775 | return 0; | |
776 | ||
777 | LIST_FOREACH(matches, i, m->matches) { | |
778 | uint64_t cp; | |
779 | ||
780 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
781 | if (r <= 0) | |
4b067dc9 LP |
782 | return r; |
783 | ||
bc302926 | 784 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 785 | np = cp; |
de7b95cd LP |
786 | } |
787 | ||
cbdca852 LP |
788 | return next_for_match(j, m, f, np, direction, ret, offset); |
789 | } | |
790 | } | |
de190aef | 791 | |
cbdca852 LP |
792 | static int find_location_with_matches( |
793 | sd_journal *j, | |
794 | JournalFile *f, | |
795 | direction_t direction, | |
796 | Object **ret, | |
797 | uint64_t *offset) { | |
798 | ||
799 | int r; | |
800 | ||
801 | assert(j); | |
802 | assert(f); | |
803 | assert(ret); | |
804 | assert(offset); | |
805 | ||
806 | if (!j->level0) { | |
807 | /* No matches is simple */ | |
808 | ||
809 | if (j->current_location.type == LOCATION_HEAD) | |
810 | return journal_file_next_entry(f, NULL, 0, DIRECTION_DOWN, ret, offset); | |
811 | if (j->current_location.type == LOCATION_TAIL) | |
812 | return journal_file_next_entry(f, NULL, 0, DIRECTION_UP, ret, offset); | |
813 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
814 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
815 | if (j->current_location.monotonic_set) { | |
816 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
817 | if (r != -ENOENT) | |
818 | return r; | |
de7b95cd | 819 | } |
cbdca852 LP |
820 | if (j->current_location.realtime_set) |
821 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 822 | |
cbdca852 LP |
823 | return journal_file_next_entry(f, NULL, 0, direction, ret, offset); |
824 | } else | |
825 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
826 | } | |
de7b95cd | 827 | |
cbdca852 LP |
828 | static int next_with_matches( |
829 | sd_journal *j, | |
830 | JournalFile *f, | |
831 | direction_t direction, | |
832 | Object **ret, | |
833 | uint64_t *offset) { | |
834 | ||
835 | Object *c; | |
836 | uint64_t cp; | |
837 | ||
838 | assert(j); | |
839 | assert(f); | |
840 | assert(ret); | |
841 | assert(offset); | |
842 | ||
843 | c = *ret; | |
844 | cp = *offset; | |
845 | ||
846 | /* No matches is easy. We simple advance the file | |
847 | * pointer by one. */ | |
848 | if (!j->level0) | |
849 | return journal_file_next_entry(f, c, cp, direction, ret, offset); | |
850 | ||
851 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 852 | * with an offset at least one step larger */ |
cbdca852 | 853 | return next_for_match(j, j->level0, f, direction == DIRECTION_DOWN ? cp+1 : cp-1, direction, ret, offset); |
de7b95cd LP |
854 | } |
855 | ||
de190aef LP |
856 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction, Object **ret, uint64_t *offset) { |
857 | Object *c; | |
858 | uint64_t cp; | |
cbdca852 | 859 | int r; |
de190aef LP |
860 | |
861 | assert(j); | |
862 | assert(f); | |
863 | ||
87011c25 | 864 | if (f->last_direction == direction && f->current_offset > 0) { |
466ccd92 LP |
865 | cp = f->current_offset; |
866 | ||
867 | r = journal_file_move_to_object(f, OBJECT_ENTRY, cp, &c); | |
de190aef LP |
868 | if (r < 0) |
869 | return r; | |
870 | ||
de190aef LP |
871 | r = next_with_matches(j, f, direction, &c, &cp); |
872 | if (r <= 0) | |
873 | return r; | |
de190aef | 874 | } else { |
cbdca852 | 875 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
876 | if (r <= 0) |
877 | return r; | |
de190aef LP |
878 | } |
879 | ||
bc302926 | 880 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
881 | * that is actually different from what we were previously |
882 | * looking at. This is necessary to handle entries which exist | |
883 | * in two (or more) journal files, and which shall all be | |
884 | * suppressed but one. */ | |
885 | ||
de190aef LP |
886 | for (;;) { |
887 | bool found; | |
888 | ||
889 | if (j->current_location.type == LOCATION_DISCRETE) { | |
890 | int k; | |
891 | ||
892 | k = compare_with_location(f, c, &j->current_location); | |
1cdf7175 CH |
893 | |
894 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
895 | } else |
896 | found = true; | |
897 | ||
898 | if (found) { | |
899 | if (ret) | |
900 | *ret = c; | |
901 | if (offset) | |
902 | *offset = cp; | |
903 | return 1; | |
904 | } | |
905 | ||
906 | r = next_with_matches(j, f, direction, &c, &cp); | |
907 | if (r <= 0) | |
908 | return r; | |
909 | } | |
910 | } | |
911 | ||
e892bd17 | 912 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de LP |
913 | JournalFile *f, *new_file = NULL; |
914 | uint64_t new_offset = 0; | |
a002d44b | 915 | uint64_t p = 0; |
cec736d2 | 916 | Iterator i; |
a002d44b | 917 | Object *o; |
87d2c1ff LP |
918 | int r; |
919 | ||
1ae464e0 TA |
920 | assert_return(j, -EINVAL); |
921 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 922 | |
c1f906bd | 923 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 924 | bool found; |
87d2c1ff | 925 | |
b7c88ab8 MS |
926 | if (whole_file_precedes_location(f, &j->current_location, direction)) |
927 | continue; | |
928 | ||
f8b5a3b7 MS |
929 | if (new_file && !file_may_have_preceding_entry(f, new_file, new_offset, direction)) |
930 | continue; | |
931 | ||
de190aef | 932 | r = next_beyond_location(j, f, direction, &o, &p); |
e590af26 | 933 | if (r < 0) { |
da927ba9 | 934 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 935 | remove_file_real(j, f); |
e590af26 LP |
936 | continue; |
937 | } else if (r == 0) | |
cec736d2 | 938 | continue; |
87d2c1ff | 939 | |
468b21de | 940 | if (!new_file) |
de190aef LP |
941 | found = true; |
942 | else { | |
943 | int k; | |
944 | ||
468b21de | 945 | k = compare_entry_order(f, o, new_file, new_offset); |
de190aef | 946 | |
bc302926 | 947 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
948 | } |
949 | ||
950 | if (found) { | |
468b21de | 951 | new_file = f; |
cec736d2 | 952 | new_offset = p; |
87d2c1ff | 953 | } |
87d2c1ff LP |
954 | } |
955 | ||
468b21de | 956 | if (!new_file) |
de190aef | 957 | return 0; |
ae2cc8ef | 958 | |
468b21de LP |
959 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_offset, &o); |
960 | if (r < 0) | |
961 | return r; | |
962 | ||
87011c25 | 963 | set_location(j, LOCATION_DISCRETE, new_file, o, direction, new_offset); |
ae2cc8ef | 964 | |
de190aef LP |
965 | return 1; |
966 | } | |
ae2cc8ef | 967 | |
a5344d2c | 968 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
969 | return real_journal_next(j, DIRECTION_DOWN); |
970 | } | |
ae2cc8ef | 971 | |
a5344d2c | 972 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
973 | return real_journal_next(j, DIRECTION_UP); |
974 | } | |
ae2cc8ef | 975 | |
6f003b43 | 976 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 977 | int c = 0, r; |
ae2cc8ef | 978 | |
1ae464e0 TA |
979 | assert_return(j, -EINVAL); |
980 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 981 | |
6f003b43 LP |
982 | if (skip == 0) { |
983 | /* If this is not a discrete skip, then at least | |
984 | * resolve the current location */ | |
985 | if (j->current_location.type != LOCATION_DISCRETE) | |
986 | return real_journal_next(j, direction); | |
987 | ||
988 | return 0; | |
989 | } | |
990 | ||
991 | do { | |
992 | r = real_journal_next(j, direction); | |
de190aef LP |
993 | if (r < 0) |
994 | return r; | |
995 | ||
996 | if (r == 0) | |
997 | return c; | |
998 | ||
999 | skip--; | |
1000 | c++; | |
6f003b43 | 1001 | } while (skip > 0); |
87d2c1ff | 1002 | |
de190aef | 1003 | return c; |
87d2c1ff LP |
1004 | } |
1005 | ||
6f003b43 LP |
1006 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
1007 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
1008 | } | |
de190aef | 1009 | |
6f003b43 LP |
1010 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
1011 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
1012 | } |
1013 | ||
a5344d2c | 1014 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 1015 | Object *o; |
87d2c1ff | 1016 | int r; |
3fbf9cbb | 1017 | char bid[33], sid[33]; |
87d2c1ff | 1018 | |
1ae464e0 TA |
1019 | assert_return(j, -EINVAL); |
1020 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1021 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 1022 | |
3fbf9cbb LP |
1023 | if (!j->current_file || j->current_file->current_offset <= 0) |
1024 | return -EADDRNOTAVAIL; | |
87d2c1ff | 1025 | |
de190aef | 1026 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
1027 | if (r < 0) |
1028 | return r; | |
1029 | ||
3fbf9cbb LP |
1030 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
1031 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 1032 | |
3fbf9cbb | 1033 | if (asprintf(cursor, |
507f22bd ZJS |
1034 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
1035 | sid, le64toh(o->entry.seqnum), | |
1036 | bid, le64toh(o->entry.monotonic), | |
1037 | le64toh(o->entry.realtime), | |
1038 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 1039 | return -ENOMEM; |
87d2c1ff | 1040 | |
6f47ad30 | 1041 | return 0; |
87d2c1ff LP |
1042 | } |
1043 | ||
a5344d2c | 1044 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 1045 | const char *word, *state; |
de190aef | 1046 | size_t l; |
de190aef LP |
1047 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
1048 | bool | |
1049 | seqnum_id_set = false, | |
1050 | seqnum_set = false, | |
1051 | boot_id_set = false, | |
1052 | monotonic_set = false, | |
1053 | realtime_set = false, | |
1054 | xor_hash_set = false; | |
1055 | sd_id128_t seqnum_id, boot_id; | |
1056 | ||
1ae464e0 TA |
1057 | assert_return(j, -EINVAL); |
1058 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1059 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 1060 | |
a2a5291b | 1061 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
1062 | char *item; |
1063 | int k = 0; | |
1064 | ||
a2a5291b | 1065 | if (l < 2 || word[1] != '=') |
de190aef LP |
1066 | return -EINVAL; |
1067 | ||
a2a5291b | 1068 | item = strndup(word, l); |
de190aef LP |
1069 | if (!item) |
1070 | return -ENOMEM; | |
1071 | ||
a2a5291b | 1072 | switch (word[0]) { |
de190aef LP |
1073 | |
1074 | case 's': | |
1075 | seqnum_id_set = true; | |
be3ea5ea | 1076 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
1077 | break; |
1078 | ||
1079 | case 'i': | |
1080 | seqnum_set = true; | |
be3ea5ea | 1081 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
1082 | k = -EINVAL; |
1083 | break; | |
1084 | ||
1085 | case 'b': | |
1086 | boot_id_set = true; | |
be3ea5ea | 1087 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
1088 | break; |
1089 | ||
1090 | case 'm': | |
1091 | monotonic_set = true; | |
be3ea5ea | 1092 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
1093 | k = -EINVAL; |
1094 | break; | |
1095 | ||
1096 | case 't': | |
1097 | realtime_set = true; | |
be3ea5ea | 1098 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1099 | k = -EINVAL; |
1100 | break; | |
1101 | ||
1102 | case 'x': | |
1103 | xor_hash_set = true; | |
be3ea5ea | 1104 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1105 | k = -EINVAL; |
1106 | break; | |
1107 | } | |
1108 | ||
1109 | free(item); | |
1110 | ||
1111 | if (k < 0) | |
1112 | return k; | |
1113 | } | |
1114 | ||
1115 | if ((!seqnum_set || !seqnum_id_set) && | |
1116 | (!monotonic_set || !boot_id_set) && | |
1117 | !realtime_set) | |
1118 | return -EINVAL; | |
1119 | ||
1120 | reset_location(j); | |
1121 | ||
a87247dd | 1122 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1123 | |
1124 | if (realtime_set) { | |
1125 | j->current_location.realtime = (uint64_t) realtime; | |
1126 | j->current_location.realtime_set = true; | |
1127 | } | |
1128 | ||
1129 | if (seqnum_set && seqnum_id_set) { | |
1130 | j->current_location.seqnum = (uint64_t) seqnum; | |
1131 | j->current_location.seqnum_id = seqnum_id; | |
1132 | j->current_location.seqnum_set = true; | |
1133 | } | |
1134 | ||
1135 | if (monotonic_set && boot_id_set) { | |
1136 | j->current_location.monotonic = (uint64_t) monotonic; | |
1137 | j->current_location.boot_id = boot_id; | |
1138 | j->current_location.monotonic_set = true; | |
1139 | } | |
1140 | ||
1141 | if (xor_hash_set) { | |
1142 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1143 | j->current_location.xor_hash_set = true; | |
1144 | } | |
1145 | ||
1146 | return 0; | |
1147 | } | |
1148 | ||
c6511e85 LP |
1149 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1150 | int r; | |
a2a5291b | 1151 | const char *word, *state; |
c6511e85 LP |
1152 | size_t l; |
1153 | Object *o; | |
1154 | ||
1ae464e0 TA |
1155 | assert_return(j, -EINVAL); |
1156 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1157 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1158 | |
1159 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1160 | return -EADDRNOTAVAIL; | |
1161 | ||
1162 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1163 | if (r < 0) | |
1164 | return r; | |
1165 | ||
a2a5291b | 1166 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
c6511e85 LP |
1167 | _cleanup_free_ char *item = NULL; |
1168 | sd_id128_t id; | |
1169 | unsigned long long ll; | |
1170 | int k = 0; | |
1171 | ||
a2a5291b | 1172 | if (l < 2 || word[1] != '=') |
c6511e85 LP |
1173 | return -EINVAL; |
1174 | ||
a2a5291b | 1175 | item = strndup(word, l); |
c6511e85 LP |
1176 | if (!item) |
1177 | return -ENOMEM; | |
1178 | ||
a2a5291b | 1179 | switch (word[0]) { |
c6511e85 LP |
1180 | |
1181 | case 's': | |
1182 | k = sd_id128_from_string(item+2, &id); | |
1183 | if (k < 0) | |
1184 | return k; | |
1185 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1186 | return 0; | |
1187 | break; | |
1188 | ||
1189 | case 'i': | |
1190 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1191 | return -EINVAL; | |
1192 | if (ll != le64toh(o->entry.seqnum)) | |
1193 | return 0; | |
1194 | break; | |
1195 | ||
1196 | case 'b': | |
1197 | k = sd_id128_from_string(item+2, &id); | |
1198 | if (k < 0) | |
1199 | return k; | |
1200 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1201 | return 0; | |
1202 | break; | |
1203 | ||
1204 | case 'm': | |
1205 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1206 | return -EINVAL; | |
1207 | if (ll != le64toh(o->entry.monotonic)) | |
1208 | return 0; | |
1209 | break; | |
1210 | ||
1211 | case 't': | |
1212 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1213 | return -EINVAL; | |
1214 | if (ll != le64toh(o->entry.realtime)) | |
1215 | return 0; | |
1216 | break; | |
1217 | ||
1218 | case 'x': | |
1219 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1220 | return -EINVAL; | |
1221 | if (ll != le64toh(o->entry.xor_hash)) | |
1222 | return 0; | |
1223 | break; | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | return 1; | |
1228 | } | |
1229 | ||
1230 | ||
a5344d2c | 1231 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1232 | assert_return(j, -EINVAL); |
1233 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1234 | |
1235 | reset_location(j); | |
a87247dd | 1236 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1237 | j->current_location.boot_id = boot_id; |
1238 | j->current_location.monotonic = usec; | |
1239 | j->current_location.monotonic_set = true; | |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
a5344d2c | 1244 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1245 | assert_return(j, -EINVAL); |
1246 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1247 | |
1248 | reset_location(j); | |
a87247dd | 1249 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1250 | j->current_location.realtime = usec; |
1251 | j->current_location.realtime_set = true; | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
a5344d2c | 1256 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1257 | assert_return(j, -EINVAL); |
1258 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1259 | |
1260 | reset_location(j); | |
1261 | j->current_location.type = LOCATION_HEAD; | |
1262 | ||
1263 | return 0; | |
1264 | } | |
1265 | ||
a5344d2c | 1266 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1267 | assert_return(j, -EINVAL); |
1268 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1269 | |
1270 | reset_location(j); | |
1271 | j->current_location.type = LOCATION_TAIL; | |
1272 | ||
1273 | return 0; | |
87d2c1ff LP |
1274 | } |
1275 | ||
85210bff LP |
1276 | static void check_network(sd_journal *j, int fd) { |
1277 | struct statfs sfs; | |
1278 | ||
1279 | assert(j); | |
1280 | ||
1281 | if (j->on_network) | |
1282 | return; | |
1283 | ||
1284 | if (fstatfs(fd, &sfs) < 0) | |
1285 | return; | |
1286 | ||
1287 | j->on_network = | |
c51cf056 ZJS |
1288 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1289 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1290 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1291 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1292 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1293 | } |
1294 | ||
a688baa8 ZJS |
1295 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1296 | const char *full, *tilded, *atted; | |
1297 | ||
baabc091 | 1298 | full = strappenda(prefix, ".journal"); |
a688baa8 ZJS |
1299 | tilded = strappenda(full, "~"); |
1300 | atted = strappenda(prefix, "@"); | |
1301 | ||
1302 | return streq(filename, full) || | |
1303 | streq(filename, tilded) || | |
1304 | startswith(filename, atted); | |
1305 | } | |
1306 | ||
1307 | static bool file_type_wanted(int flags, const char *filename) { | |
1308 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1309 | return false; | |
1310 | ||
1311 | /* no flags set → every type is OK */ | |
1312 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1313 | return true; | |
1314 | ||
1315 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1316 | return true; | |
1317 | ||
1318 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1319 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1320 | ||
de0671ee | 1321 | assert_se(snprintf(prefix, sizeof(prefix), "user-"UID_FMT, getuid()) |
a688baa8 ZJS |
1322 | < (int) sizeof(prefix)); |
1323 | ||
1324 | if (file_has_type_prefix(prefix, filename)) | |
1325 | return true; | |
1326 | } | |
1327 | ||
1328 | return false; | |
1329 | } | |
1330 | ||
5302ebe1 | 1331 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1332 | JournalFile *f = NULL; |
5302ebe1 | 1333 | int r; |
3fbf9cbb LP |
1334 | |
1335 | assert(j); | |
5302ebe1 | 1336 | assert(path); |
3fbf9cbb | 1337 | |
c1f906bd | 1338 | if (ordered_hashmap_get(j->files, path)) |
50f20cfd | 1339 | return 0; |
50f20cfd | 1340 | |
c1f906bd | 1341 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
5302ebe1 | 1342 | log_warning("Too many open journal files, not adding %s.", path); |
3ac251b8 | 1343 | return set_put_error(j, -ETOOMANYREFS); |
50f20cfd LP |
1344 | } |
1345 | ||
16e9f408 | 1346 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1347 | if (r < 0) |
3fbf9cbb | 1348 | return r; |
3fbf9cbb | 1349 | |
72f59706 | 1350 | /* journal_file_dump(f); */ |
de190aef | 1351 | |
c1f906bd | 1352 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb LP |
1353 | if (r < 0) { |
1354 | journal_file_close(f); | |
1355 | return r; | |
1356 | } | |
1357 | ||
5ec76417 | 1358 | log_debug("File %s added.", f->path); |
a50d7d43 | 1359 | |
85210bff LP |
1360 | check_network(j, f->fd); |
1361 | ||
a963990f LP |
1362 | j->current_invalidate_counter ++; |
1363 | ||
50f20cfd LP |
1364 | return 0; |
1365 | } | |
1366 | ||
5302ebe1 ZJS |
1367 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1368 | _cleanup_free_ char *path = NULL; | |
1369 | int r; | |
1370 | ||
1371 | assert(j); | |
1372 | assert(prefix); | |
1373 | assert(filename); | |
1374 | ||
1375 | if (j->no_new_files || | |
1376 | !file_type_wanted(j->flags, filename)) | |
1377 | return 0; | |
1378 | ||
1379 | path = strjoin(prefix, "/", filename, NULL); | |
1380 | if (!path) | |
1381 | return -ENOMEM; | |
1382 | ||
1383 | r = add_any_file(j, path); | |
1384 | if (r == -ENOENT) | |
1385 | return 0; | |
1386 | return 0; | |
1387 | } | |
1388 | ||
a963990f | 1389 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
a9a245c1 | 1390 | _cleanup_free_ char *path; |
50f20cfd LP |
1391 | JournalFile *f; |
1392 | ||
1393 | assert(j); | |
1394 | assert(prefix); | |
1395 | assert(filename); | |
1396 | ||
b7def684 | 1397 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1398 | if (!path) |
50f20cfd LP |
1399 | return -ENOMEM; |
1400 | ||
c1f906bd | 1401 | f = ordered_hashmap_get(j->files, path); |
50f20cfd LP |
1402 | if (!f) |
1403 | return 0; | |
1404 | ||
a9a245c1 ZJS |
1405 | remove_file_real(j, f); |
1406 | return 0; | |
1407 | } | |
1408 | ||
1409 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1410 | assert(j); | |
1411 | assert(f); | |
1412 | ||
c1f906bd | 1413 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1414 | |
5ec76417 | 1415 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1416 | |
3c1668da LP |
1417 | if (j->current_file == f) { |
1418 | j->current_file = NULL; | |
1419 | j->current_field = 0; | |
1420 | } | |
1421 | ||
1422 | if (j->unique_file == f) { | |
360af4cf | 1423 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1424 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1425 | j->unique_offset = 0; |
360af4cf ZJS |
1426 | if (!j->unique_file) |
1427 | j->unique_file_lost = true; | |
3c1668da LP |
1428 | } |
1429 | ||
50f20cfd LP |
1430 | journal_file_close(f); |
1431 | ||
a963990f | 1432 | j->current_invalidate_counter ++; |
3fbf9cbb LP |
1433 | } |
1434 | ||
a963990f | 1435 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1436 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1437 | int r; |
7fd1b19b | 1438 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1439 | sd_id128_t id, mid; |
a963990f | 1440 | Directory *m; |
3fbf9cbb LP |
1441 | |
1442 | assert(j); | |
1443 | assert(prefix); | |
a963990f | 1444 | assert(dirname); |
3fbf9cbb | 1445 | |
d95b1fb3 ZJS |
1446 | log_debug("Considering %s/%s.", prefix, dirname); |
1447 | ||
cf244689 | 1448 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1449 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1450 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1451 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1452 | return 0; |
1453 | ||
b7def684 | 1454 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1455 | if (!path) |
3fbf9cbb LP |
1456 | return -ENOMEM; |
1457 | ||
a963990f | 1458 | d = opendir(path); |
3fbf9cbb | 1459 | if (!d) { |
56f64d95 | 1460 | log_debug_errno(errno, "Failed to open %s: %m", path); |
3fbf9cbb LP |
1461 | if (errno == ENOENT) |
1462 | return 0; | |
3fbf9cbb LP |
1463 | return -errno; |
1464 | } | |
1465 | ||
a963990f LP |
1466 | m = hashmap_get(j->directories_by_path, path); |
1467 | if (!m) { | |
1468 | m = new0(Directory, 1); | |
a50d7d43 | 1469 | if (!m) |
a963990f | 1470 | return -ENOMEM; |
a963990f LP |
1471 | |
1472 | m->is_root = false; | |
1473 | m->path = path; | |
1474 | ||
1475 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1476 | free(m); |
1477 | return -ENOMEM; | |
1478 | } | |
1479 | ||
a50d7d43 | 1480 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1481 | j->current_invalidate_counter ++; |
1482 | ||
5ec76417 | 1483 | log_debug("Directory %s added.", m->path); |
a963990f | 1484 | |
a50d7d43 | 1485 | } else if (m->is_root) |
a963990f | 1486 | return 0; |
a963990f LP |
1487 | |
1488 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1489 | ||
1490 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1491 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1492 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1493 | IN_ONLYDIR); |
a963990f LP |
1494 | |
1495 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1496 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1497 | } | |
1498 | ||
1499 | for (;;) { | |
7d5e9c0f | 1500 | struct dirent *de; |
a963990f | 1501 | |
bde1fdd7 FW |
1502 | errno = 0; |
1503 | de = readdir(d); | |
1504 | if (!de && errno != 0) { | |
1505 | r = -errno; | |
56f64d95 | 1506 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1507 | return r; |
1508 | } | |
1509 | if (!de) | |
a963990f LP |
1510 | break; |
1511 | ||
de2c3907 LP |
1512 | if (dirent_is_file_with_suffix(de, ".journal") || |
1513 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1514 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1515 | if (r < 0) { |
c33b3297 MS |
1516 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1517 | m->path, de->d_name); | |
3ac251b8 | 1518 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1519 | if (r < 0) |
1520 | return r; | |
1521 | } | |
a963990f LP |
1522 | } |
1523 | } | |
1524 | ||
85210bff LP |
1525 | check_network(j, dirfd(d)); |
1526 | ||
a963990f LP |
1527 | return 0; |
1528 | } | |
1529 | ||
89739579 | 1530 | static int add_root_directory(sd_journal *j, const char *p) { |
7fd1b19b | 1531 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1532 | Directory *m; |
1533 | int r; | |
1534 | ||
1535 | assert(j); | |
1536 | assert(p); | |
1537 | ||
1538 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1539 | !path_startswith(p, "/run")) | |
1540 | return -EINVAL; | |
1541 | ||
89739579 LP |
1542 | if (j->prefix) |
1543 | p = strappenda(j->prefix, p); | |
b6741478 | 1544 | |
a963990f LP |
1545 | d = opendir(p); |
1546 | if (!d) | |
1547 | return -errno; | |
1548 | ||
1549 | m = hashmap_get(j->directories_by_path, p); | |
1550 | if (!m) { | |
1551 | m = new0(Directory, 1); | |
a50d7d43 | 1552 | if (!m) |
a963990f | 1553 | return -ENOMEM; |
a963990f LP |
1554 | |
1555 | m->is_root = true; | |
1556 | m->path = strdup(p); | |
1557 | if (!m->path) { | |
a963990f LP |
1558 | free(m); |
1559 | return -ENOMEM; | |
1560 | } | |
1561 | ||
1562 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1563 | free(m->path); |
1564 | free(m); | |
1565 | return -ENOMEM; | |
1566 | } | |
1567 | ||
1568 | j->current_invalidate_counter ++; | |
1569 | ||
5ec76417 | 1570 | log_debug("Root directory %s added.", m->path); |
a963990f | 1571 | |
a50d7d43 | 1572 | } else if (!m->is_root) |
a963990f | 1573 | return 0; |
50f20cfd | 1574 | |
a963990f LP |
1575 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1576 | ||
1577 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1578 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1579 | IN_ONLYDIR); |
a963990f LP |
1580 | |
1581 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1582 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1583 | } | |
50f20cfd | 1584 | |
5302ebe1 ZJS |
1585 | if (j->no_new_files) |
1586 | return 0; | |
1587 | ||
3fbf9cbb | 1588 | for (;;) { |
7d5e9c0f | 1589 | struct dirent *de; |
a963990f | 1590 | sd_id128_t id; |
3fbf9cbb | 1591 | |
bde1fdd7 FW |
1592 | errno = 0; |
1593 | de = readdir(d); | |
1594 | if (!de && errno != 0) { | |
1595 | r = -errno; | |
56f64d95 | 1596 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1597 | return r; |
1598 | } | |
1599 | if (!de) | |
3fbf9cbb LP |
1600 | break; |
1601 | ||
de2c3907 LP |
1602 | if (dirent_is_file_with_suffix(de, ".journal") || |
1603 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1604 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1605 | if (r < 0) { |
c33b3297 MS |
1606 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1607 | m->path, de->d_name); | |
3ac251b8 | 1608 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1609 | if (r < 0) |
1610 | return r; | |
1611 | } | |
6f5878a2 | 1612 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1613 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1614 | ||
1615 | r = add_directory(j, m->path, de->d_name); | |
1616 | if (r < 0) | |
da927ba9 | 1617 | log_debug_errno(r, "Failed to add directory %s/%s: %m", m->path, de->d_name); |
a963990f | 1618 | } |
3fbf9cbb LP |
1619 | } |
1620 | ||
85210bff LP |
1621 | check_network(j, dirfd(d)); |
1622 | ||
a963990f LP |
1623 | return 0; |
1624 | } | |
1625 | ||
1626 | static int remove_directory(sd_journal *j, Directory *d) { | |
1627 | assert(j); | |
1628 | ||
1629 | if (d->wd > 0) { | |
1630 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1631 | ||
1632 | if (j->inotify_fd >= 0) | |
1633 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1634 | } | |
1635 | ||
1636 | hashmap_remove(j->directories_by_path, d->path); | |
1637 | ||
1638 | if (d->is_root) | |
5ec76417 | 1639 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1640 | else |
5ec76417 | 1641 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1642 | |
1643 | free(d->path); | |
1644 | free(d); | |
50f20cfd | 1645 | |
3fbf9cbb LP |
1646 | return 0; |
1647 | } | |
1648 | ||
89739579 | 1649 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1650 | int r; |
a963990f LP |
1651 | const char search_paths[] = |
1652 | "/run/log/journal\0" | |
1653 | "/var/log/journal\0"; | |
1654 | const char *p; | |
50f20cfd LP |
1655 | |
1656 | assert(j); | |
50f20cfd | 1657 | |
a963990f LP |
1658 | /* We ignore most errors here, since the idea is to only open |
1659 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1660 | |
6fe391c5 | 1661 | NULSTR_FOREACH(p, search_paths) { |
89739579 | 1662 | r = add_root_directory(j, p); |
3ac251b8 LP |
1663 | if (r < 0 && r != -ENOENT) { |
1664 | r = set_put_error(j, r); | |
1665 | if (r < 0) | |
1666 | return r; | |
1667 | } | |
6fe391c5 | 1668 | } |
50f20cfd | 1669 | |
a963990f | 1670 | return 0; |
50f20cfd LP |
1671 | } |
1672 | ||
5302ebe1 ZJS |
1673 | static int add_current_paths(sd_journal *j) { |
1674 | Iterator i; | |
1675 | JournalFile *f; | |
1676 | ||
1677 | assert(j); | |
1678 | assert(j->no_new_files); | |
1679 | ||
1680 | /* Simply adds all directories for files we have open as | |
1681 | * "root" directories. We don't expect errors here, so we | |
1682 | * treat them as fatal. */ | |
1683 | ||
c1f906bd | 1684 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1685 | _cleanup_free_ char *dir; |
e9174f29 | 1686 | int r; |
5302ebe1 ZJS |
1687 | |
1688 | dir = dirname_malloc(f->path); | |
1689 | if (!dir) | |
1690 | return -ENOMEM; | |
1691 | ||
89739579 | 1692 | r = add_root_directory(j, dir); |
5302ebe1 ZJS |
1693 | if (r < 0) { |
1694 | set_put_error(j, r); | |
1695 | return r; | |
1696 | } | |
1697 | } | |
1698 | ||
1699 | return 0; | |
1700 | } | |
1701 | ||
1702 | ||
a963990f | 1703 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1704 | assert(j); |
50f20cfd | 1705 | |
a963990f LP |
1706 | if (j->inotify_fd < 0) { |
1707 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1708 | if (j->inotify_fd < 0) | |
1709 | return -errno; | |
1710 | } | |
50f20cfd | 1711 | |
a963990f | 1712 | if (!j->directories_by_wd) { |
d5099efc | 1713 | j->directories_by_wd = hashmap_new(NULL); |
a963990f LP |
1714 | if (!j->directories_by_wd) |
1715 | return -ENOMEM; | |
50f20cfd | 1716 | } |
a963990f LP |
1717 | |
1718 | return 0; | |
50f20cfd LP |
1719 | } |
1720 | ||
7827b1a1 | 1721 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1722 | sd_journal *j; |
50f20cfd | 1723 | |
a963990f LP |
1724 | j = new0(sd_journal, 1); |
1725 | if (!j) | |
1726 | return NULL; | |
50f20cfd | 1727 | |
a65f06bb | 1728 | j->original_pid = getpid(); |
a963990f LP |
1729 | j->inotify_fd = -1; |
1730 | j->flags = flags; | |
93b73b06 | 1731 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1732 | |
7827b1a1 LP |
1733 | if (path) { |
1734 | j->path = strdup(path); | |
6180fc61 ZJS |
1735 | if (!j->path) |
1736 | goto fail; | |
7827b1a1 LP |
1737 | } |
1738 | ||
c1f906bd | 1739 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1740 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1741 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1742 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1743 | goto fail; |
16e9f408 | 1744 | |
a963990f | 1745 | return j; |
6180fc61 ZJS |
1746 | |
1747 | fail: | |
1748 | sd_journal_close(j); | |
1749 | return NULL; | |
50f20cfd LP |
1750 | } |
1751 | ||
a5344d2c | 1752 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1753 | sd_journal *j; |
3fbf9cbb | 1754 | int r; |
87d2c1ff | 1755 | |
1ae464e0 | 1756 | assert_return(ret, -EINVAL); |
b6741478 | 1757 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1758 | |
7827b1a1 | 1759 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1760 | if (!j) |
1761 | return -ENOMEM; | |
1762 | ||
89739579 | 1763 | r = add_search_paths(j); |
a963990f | 1764 | if (r < 0) |
50f20cfd | 1765 | goto fail; |
50f20cfd | 1766 | |
a963990f LP |
1767 | *ret = j; |
1768 | return 0; | |
cf244689 | 1769 | |
a963990f LP |
1770 | fail: |
1771 | sd_journal_close(j); | |
87d2c1ff | 1772 | |
a963990f LP |
1773 | return r; |
1774 | } | |
50f20cfd | 1775 | |
b6741478 LP |
1776 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1777 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1778 | sd_journal *j; | |
1779 | char *p; | |
1780 | int r; | |
1781 | ||
1782 | assert_return(machine, -EINVAL); | |
1783 | assert_return(ret, -EINVAL); | |
1784 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1785 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 LP |
1786 | |
1787 | p = strappenda("/run/systemd/machines/", machine); | |
1788 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); | |
1789 | if (r == -ENOENT) | |
1790 | return -EHOSTDOWN; | |
1791 | if (r < 0) | |
1792 | return r; | |
1793 | if (!root) | |
1794 | return -ENODATA; | |
1795 | ||
1796 | if (!streq_ptr(class, "container")) | |
1797 | return -EIO; | |
1798 | ||
1799 | j = journal_new(flags, NULL); | |
1800 | if (!j) | |
1801 | return -ENOMEM; | |
1802 | ||
89739579 LP |
1803 | j->prefix = root; |
1804 | root = NULL; | |
1805 | ||
1806 | r = add_search_paths(j); | |
b6741478 LP |
1807 | if (r < 0) |
1808 | goto fail; | |
1809 | ||
1810 | *ret = j; | |
1811 | return 0; | |
1812 | ||
1813 | fail: | |
1814 | sd_journal_close(j); | |
1815 | return r; | |
1816 | } | |
1817 | ||
a963990f LP |
1818 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1819 | sd_journal *j; | |
1820 | int r; | |
87d2c1ff | 1821 | |
1ae464e0 TA |
1822 | assert_return(ret, -EINVAL); |
1823 | assert_return(path, -EINVAL); | |
1824 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1825 | |
7827b1a1 | 1826 | j = journal_new(flags, path); |
a963990f LP |
1827 | if (!j) |
1828 | return -ENOMEM; | |
3fbf9cbb | 1829 | |
89739579 | 1830 | r = add_root_directory(j, path); |
6fe391c5 | 1831 | if (r < 0) { |
3ac251b8 | 1832 | set_put_error(j, r); |
a963990f | 1833 | goto fail; |
6fe391c5 | 1834 | } |
87d2c1ff LP |
1835 | |
1836 | *ret = j; | |
1837 | return 0; | |
1838 | ||
1839 | fail: | |
1840 | sd_journal_close(j); | |
1841 | ||
1842 | return r; | |
a963990f | 1843 | } |
87d2c1ff | 1844 | |
5302ebe1 ZJS |
1845 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1846 | sd_journal *j; | |
1847 | const char **path; | |
1848 | int r; | |
1849 | ||
1ae464e0 TA |
1850 | assert_return(ret, -EINVAL); |
1851 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1852 | |
1853 | j = journal_new(flags, NULL); | |
1854 | if (!j) | |
1855 | return -ENOMEM; | |
1856 | ||
1857 | STRV_FOREACH(path, paths) { | |
1858 | r = add_any_file(j, *path); | |
1859 | if (r < 0) { | |
da927ba9 | 1860 | log_error_errno(r, "Failed to open %s: %m", *path); |
5302ebe1 ZJS |
1861 | goto fail; |
1862 | } | |
1863 | } | |
1864 | ||
1865 | j->no_new_files = true; | |
1866 | ||
1867 | *ret = j; | |
1868 | return 0; | |
1869 | ||
1870 | fail: | |
1871 | sd_journal_close(j); | |
1872 | ||
1873 | return r; | |
1874 | } | |
1875 | ||
a5344d2c | 1876 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1877 | Directory *d; |
1878 | JournalFile *f; | |
1879 | ||
a5344d2c LP |
1880 | if (!j) |
1881 | return; | |
87d2c1ff | 1882 | |
54b1da83 LP |
1883 | sd_journal_flush_matches(j); |
1884 | ||
c1f906bd | 1885 | while ((f = ordered_hashmap_steal_first(j->files))) |
a963990f | 1886 | journal_file_close(f); |
50f20cfd | 1887 | |
c1f906bd | 1888 | ordered_hashmap_free(j->files); |
260a2be4 | 1889 | |
a963990f LP |
1890 | while ((d = hashmap_first(j->directories_by_path))) |
1891 | remove_directory(j, d); | |
260a2be4 | 1892 | |
a963990f LP |
1893 | while ((d = hashmap_first(j->directories_by_wd))) |
1894 | remove_directory(j, d); | |
87d2c1ff | 1895 | |
a963990f LP |
1896 | hashmap_free(j->directories_by_path); |
1897 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1898 | |
03e334a1 | 1899 | safe_close(j->inotify_fd); |
50f20cfd | 1900 | |
bf807d4d LP |
1901 | if (j->mmap) { |
1902 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1903 | mmap_cache_unref(j->mmap); |
bf807d4d | 1904 | } |
16e9f408 | 1905 | |
7827b1a1 | 1906 | free(j->path); |
89739579 | 1907 | free(j->prefix); |
3c1668da | 1908 | free(j->unique_field); |
6fe391c5 | 1909 | set_free(j->errors); |
87d2c1ff LP |
1910 | free(j); |
1911 | } | |
3fbf9cbb | 1912 | |
a5344d2c | 1913 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1914 | Object *o; |
1915 | JournalFile *f; | |
1916 | int r; | |
1917 | ||
1ae464e0 TA |
1918 | assert_return(j, -EINVAL); |
1919 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1920 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1921 | |
1922 | f = j->current_file; | |
1923 | if (!f) | |
de190aef | 1924 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1925 | |
1926 | if (f->current_offset <= 0) | |
de190aef | 1927 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1928 | |
de190aef | 1929 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1930 | if (r < 0) |
1931 | return r; | |
1932 | ||
1933 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1934 | return 0; |
3fbf9cbb LP |
1935 | } |
1936 | ||
a5344d2c | 1937 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1938 | Object *o; |
1939 | JournalFile *f; | |
1940 | int r; | |
1941 | sd_id128_t id; | |
1942 | ||
1ae464e0 TA |
1943 | assert_return(j, -EINVAL); |
1944 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1945 | |
1946 | f = j->current_file; | |
1947 | if (!f) | |
de190aef | 1948 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1949 | |
1950 | if (f->current_offset <= 0) | |
de190aef | 1951 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1952 | |
de190aef | 1953 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1954 | if (r < 0) |
1955 | return r; | |
1956 | ||
de190aef LP |
1957 | if (ret_boot_id) |
1958 | *ret_boot_id = o->entry.boot_id; | |
1959 | else { | |
1960 | r = sd_id128_get_boot(&id); | |
1961 | if (r < 0) | |
1962 | return r; | |
3fbf9cbb | 1963 | |
de190aef | 1964 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1965 | return -ESTALE; |
de190aef | 1966 | } |
3fbf9cbb | 1967 | |
14a65d65 LP |
1968 | if (ret) |
1969 | *ret = le64toh(o->entry.monotonic); | |
1970 | ||
de190aef | 1971 | return 0; |
3fbf9cbb LP |
1972 | } |
1973 | ||
362a3f81 LP |
1974 | static bool field_is_valid(const char *field) { |
1975 | const char *p; | |
1976 | ||
1977 | assert(field); | |
1978 | ||
1979 | if (isempty(field)) | |
1980 | return false; | |
1981 | ||
1982 | if (startswith(field, "__")) | |
1983 | return false; | |
1984 | ||
1985 | for (p = field; *p; p++) { | |
1986 | ||
1987 | if (*p == '_') | |
1988 | continue; | |
1989 | ||
1990 | if (*p >= 'A' && *p <= 'Z') | |
1991 | continue; | |
1992 | ||
1993 | if (*p >= '0' && *p <= '9') | |
1994 | continue; | |
1995 | ||
1996 | return false; | |
1997 | } | |
1998 | ||
1999 | return true; | |
2000 | } | |
2001 | ||
a5344d2c | 2002 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
2003 | JournalFile *f; |
2004 | uint64_t i, n; | |
2005 | size_t field_length; | |
2006 | int r; | |
2007 | Object *o; | |
2008 | ||
1ae464e0 TA |
2009 | assert_return(j, -EINVAL); |
2010 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2011 | assert_return(field, -EINVAL); | |
2012 | assert_return(data, -EINVAL); | |
2013 | assert_return(size, -EINVAL); | |
2014 | assert_return(field_is_valid(field), -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 | field_length = strlen(field); | |
2028 | ||
2029 | n = journal_file_entry_n_items(o); | |
2030 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2031 | uint64_t p, l; |
2032 | le64_t le_hash; | |
3fbf9cbb | 2033 | size_t t; |
1ec7120e | 2034 | int compression; |
3fbf9cbb LP |
2035 | |
2036 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 2037 | le_hash = o->entry.items[i].hash; |
de190aef | 2038 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
2039 | if (r < 0) |
2040 | return r; | |
2041 | ||
de190aef | 2042 | if (le_hash != o->data.hash) |
de7b95cd LP |
2043 | return -EBADMSG; |
2044 | ||
3fbf9cbb LP |
2045 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
2046 | ||
1ec7120e | 2047 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
2048 | if (compression) { |
2049 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
2050 | if (decompress_startswith(compression, | |
2051 | o->data.payload, l, | |
2052 | &f->compress_buffer, &f->compress_buffer_size, | |
2053 | field, field_length, '=')) { | |
2054 | ||
fa1c4b51 | 2055 | size_t rsize; |
3b1a55e1 ZJS |
2056 | |
2057 | r = decompress_blob(compression, | |
2058 | o->data.payload, l, | |
2059 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
2060 | j->data_threshold); | |
2061 | if (r < 0) | |
2062 | return r; | |
807e17f0 | 2063 | |
3b1a55e1 ZJS |
2064 | *data = f->compress_buffer; |
2065 | *size = (size_t) rsize; | |
807e17f0 | 2066 | |
3b1a55e1 ZJS |
2067 | return 0; |
2068 | } | |
2069 | #else | |
2070 | return -EPROTONOSUPPORT; | |
2071 | #endif | |
807e17f0 LP |
2072 | } else if (l >= field_length+1 && |
2073 | memcmp(o->data.payload, field, field_length) == 0 && | |
2074 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2075 | |
161e54f8 | 2076 | t = (size_t) l; |
3fbf9cbb | 2077 | |
161e54f8 LP |
2078 | if ((uint64_t) t != l) |
2079 | return -E2BIG; | |
3fbf9cbb | 2080 | |
161e54f8 LP |
2081 | *data = o->data.payload; |
2082 | *size = t; | |
3fbf9cbb | 2083 | |
99613ec5 | 2084 | return 0; |
161e54f8 | 2085 | } |
3fbf9cbb | 2086 | |
de190aef | 2087 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2088 | if (r < 0) |
2089 | return r; | |
3fbf9cbb LP |
2090 | } |
2091 | ||
de190aef | 2092 | return -ENOENT; |
3fbf9cbb LP |
2093 | } |
2094 | ||
93b73b06 | 2095 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2096 | size_t t; |
2097 | uint64_t l; | |
3b1a55e1 | 2098 | int compression; |
3c1668da LP |
2099 | |
2100 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2101 | t = (size_t) l; | |
2102 | ||
2103 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2104 | if ((uint64_t) t != l) | |
2105 | return -E2BIG; | |
2106 | ||
1ec7120e ZJS |
2107 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2108 | if (compression) { | |
3b1a55e1 | 2109 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 2110 | size_t rsize; |
3b1a55e1 | 2111 | int r; |
3c1668da | 2112 | |
1ec7120e ZJS |
2113 | r = decompress_blob(compression, |
2114 | o->data.payload, l, &f->compress_buffer, | |
2115 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2116 | if (r < 0) | |
2117 | return r; | |
3c1668da LP |
2118 | |
2119 | *data = f->compress_buffer; | |
2120 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2121 | #else |
2122 | return -EPROTONOSUPPORT; | |
2123 | #endif | |
3c1668da LP |
2124 | } else { |
2125 | *data = o->data.payload; | |
2126 | *size = t; | |
2127 | } | |
2128 | ||
2129 | return 0; | |
2130 | } | |
2131 | ||
a5344d2c | 2132 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2133 | JournalFile *f; |
3c1668da | 2134 | uint64_t p, n; |
4fd052ae | 2135 | le64_t le_hash; |
3fbf9cbb LP |
2136 | int r; |
2137 | Object *o; | |
2138 | ||
1ae464e0 TA |
2139 | assert_return(j, -EINVAL); |
2140 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2141 | assert_return(data, -EINVAL); | |
2142 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2143 | |
2144 | f = j->current_file; | |
2145 | if (!f) | |
de190aef | 2146 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2147 | |
2148 | if (f->current_offset <= 0) | |
de190aef | 2149 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2150 | |
de190aef | 2151 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2152 | if (r < 0) |
2153 | return r; | |
2154 | ||
2155 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2156 | if (j->current_field >= n) |
3fbf9cbb LP |
2157 | return 0; |
2158 | ||
7210bfb3 | 2159 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2160 | le_hash = o->entry.items[j->current_field].hash; |
2161 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2162 | if (r < 0) |
2163 | return r; | |
2164 | ||
de190aef | 2165 | if (le_hash != o->data.hash) |
de7b95cd LP |
2166 | return -EBADMSG; |
2167 | ||
93b73b06 | 2168 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2169 | if (r < 0) |
2170 | return r; | |
3fbf9cbb | 2171 | |
7210bfb3 | 2172 | j->current_field ++; |
3fbf9cbb LP |
2173 | |
2174 | return 1; | |
2175 | } | |
c2373f84 | 2176 | |
a5344d2c LP |
2177 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2178 | if (!j) | |
2179 | return; | |
8725d60a LP |
2180 | |
2181 | j->current_field = 0; | |
c2373f84 | 2182 | } |
50f20cfd | 2183 | |
a5344d2c | 2184 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2185 | int r; |
2186 | ||
1ae464e0 TA |
2187 | assert_return(j, -EINVAL); |
2188 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2189 | |
a963990f LP |
2190 | if (j->inotify_fd >= 0) |
2191 | return j->inotify_fd; | |
2192 | ||
2193 | r = allocate_inotify(j); | |
2194 | if (r < 0) | |
2195 | return r; | |
2196 | ||
2197 | /* Iterate through all dirs again, to add them to the | |
2198 | * inotify */ | |
5302ebe1 ZJS |
2199 | if (j->no_new_files) |
2200 | r = add_current_paths(j); | |
2201 | else if (j->path) | |
89739579 | 2202 | r = add_root_directory(j, j->path); |
7827b1a1 | 2203 | else |
89739579 | 2204 | r = add_search_paths(j); |
a963990f LP |
2205 | if (r < 0) |
2206 | return r; | |
2207 | ||
50f20cfd LP |
2208 | return j->inotify_fd; |
2209 | } | |
2210 | ||
ee531d94 LP |
2211 | _public_ int sd_journal_get_events(sd_journal *j) { |
2212 | int fd; | |
2213 | ||
1ae464e0 TA |
2214 | assert_return(j, -EINVAL); |
2215 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2216 | |
2217 | fd = sd_journal_get_fd(j); | |
2218 | if (fd < 0) | |
2219 | return fd; | |
2220 | ||
2221 | return POLLIN; | |
2222 | } | |
2223 | ||
39c155ea LP |
2224 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2225 | int fd; | |
2226 | ||
1ae464e0 TA |
2227 | assert_return(j, -EINVAL); |
2228 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2229 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2230 | |
2231 | fd = sd_journal_get_fd(j); | |
2232 | if (fd < 0) | |
2233 | return fd; | |
2234 | ||
2235 | if (!j->on_network) { | |
2236 | *timeout_usec = (uint64_t) -1; | |
2237 | return 0; | |
2238 | } | |
2239 | ||
2240 | /* If we are on the network we need to regularly check for | |
2241 | * changes manually */ | |
2242 | ||
2243 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2244 | return 1; | |
2245 | } | |
2246 | ||
50f20cfd | 2247 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2248 | Directory *d; |
50f20cfd LP |
2249 | int r; |
2250 | ||
2251 | assert(j); | |
2252 | assert(e); | |
2253 | ||
2254 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2255 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2256 | if (d) { | |
2257 | sd_id128_t id; | |
50f20cfd | 2258 | |
de2c3907 LP |
2259 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2260 | (endswith(e->name, ".journal") || | |
2261 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2262 | |
2263 | /* Event for a journal file */ | |
2264 | ||
2265 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2266 | r = add_file(j, d->path, e->name); |
6fe391c5 | 2267 | if (r < 0) { |
c33b3297 MS |
2268 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
2269 | d->path, e->name); | |
3ac251b8 | 2270 | set_put_error(j, r); |
6fe391c5 | 2271 | } |
a963990f | 2272 | |
5e6870ea | 2273 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2274 | |
a963990f | 2275 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2276 | if (r < 0) |
da927ba9 | 2277 | log_debug_errno(r, "Failed to remove file %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2278 | } |
2279 | ||
a963990f | 2280 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2281 | |
a963990f | 2282 | /* Event for a subdirectory */ |
50f20cfd | 2283 | |
a963990f LP |
2284 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2285 | r = remove_directory(j, d); | |
50f20cfd | 2286 | if (r < 0) |
da927ba9 | 2287 | log_debug_errno(r, "Failed to remove directory %s: %m", d->path); |
50f20cfd LP |
2288 | } |
2289 | ||
50f20cfd | 2290 | |
a963990f | 2291 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2292 | |
a963990f | 2293 | /* Event for root directory */ |
50f20cfd | 2294 | |
a963990f LP |
2295 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2296 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2297 | if (r < 0) |
da927ba9 | 2298 | log_debug_errno(r, "Failed to add directory %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2299 | } |
2300 | } | |
2301 | ||
2302 | return; | |
2303 | } | |
2304 | ||
2305 | if (e->mask & IN_IGNORED) | |
2306 | return; | |
2307 | ||
2308 | log_warning("Unknown inotify event."); | |
2309 | } | |
2310 | ||
a963990f LP |
2311 | static int determine_change(sd_journal *j) { |
2312 | bool b; | |
2313 | ||
2314 | assert(j); | |
2315 | ||
2316 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2317 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2318 | ||
2319 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2320 | } | |
2321 | ||
a5344d2c | 2322 | _public_ int sd_journal_process(sd_journal *j) { |
19d1e4ee | 2323 | uint8_t buffer[sizeof(struct inotify_event) + FILENAME_MAX] _alignas_(struct inotify_event); |
a963990f | 2324 | bool got_something = false; |
50f20cfd | 2325 | |
1ae464e0 TA |
2326 | assert_return(j, -EINVAL); |
2327 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2328 | |
39c155ea LP |
2329 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2330 | ||
50f20cfd LP |
2331 | for (;;) { |
2332 | struct inotify_event *e; | |
2333 | ssize_t l; | |
2334 | ||
2335 | l = read(j->inotify_fd, buffer, sizeof(buffer)); | |
2336 | if (l < 0) { | |
a963990f LP |
2337 | if (errno == EAGAIN || errno == EINTR) |
2338 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2339 | |
2340 | return -errno; | |
2341 | } | |
2342 | ||
a963990f LP |
2343 | got_something = true; |
2344 | ||
50f20cfd LP |
2345 | e = (struct inotify_event*) buffer; |
2346 | while (l > 0) { | |
2347 | size_t step; | |
2348 | ||
2349 | process_inotify_event(j, e); | |
2350 | ||
2351 | step = sizeof(struct inotify_event) + e->len; | |
2352 | assert(step <= (size_t) l); | |
2353 | ||
2354 | e = (struct inotify_event*) ((uint8_t*) e + step); | |
2355 | l -= step; | |
2356 | } | |
2357 | } | |
2358 | } | |
6ad1d1c3 | 2359 | |
e02d1cf7 | 2360 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2361 | int r; |
39c155ea | 2362 | uint64_t t; |
e02d1cf7 | 2363 | |
1ae464e0 TA |
2364 | assert_return(j, -EINVAL); |
2365 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2366 | |
a963990f LP |
2367 | if (j->inotify_fd < 0) { |
2368 | ||
2369 | /* This is the first invocation, hence create the | |
2370 | * inotify watch */ | |
2371 | r = sd_journal_get_fd(j); | |
2372 | if (r < 0) | |
2373 | return r; | |
2374 | ||
2375 | /* The journal might have changed since the context | |
2376 | * object was created and we weren't watching before, | |
2377 | * hence don't wait for anything, and return | |
2378 | * immediately. */ | |
2379 | return determine_change(j); | |
2380 | } | |
2381 | ||
39c155ea LP |
2382 | r = sd_journal_get_timeout(j, &t); |
2383 | if (r < 0) | |
2384 | return r; | |
2385 | ||
2386 | if (t != (uint64_t) -1) { | |
2387 | usec_t n; | |
2388 | ||
2389 | n = now(CLOCK_MONOTONIC); | |
2390 | t = t > n ? t - n : 0; | |
85210bff | 2391 | |
39c155ea LP |
2392 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2393 | timeout_usec = t; | |
85210bff LP |
2394 | } |
2395 | ||
a963990f LP |
2396 | do { |
2397 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2398 | } while (r == -EINTR); | |
e02d1cf7 LP |
2399 | |
2400 | if (r < 0) | |
2401 | return r; | |
2402 | ||
a963990f | 2403 | return sd_journal_process(j); |
e02d1cf7 LP |
2404 | } |
2405 | ||
08984293 LP |
2406 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2407 | Iterator i; | |
2408 | JournalFile *f; | |
2409 | bool first = true; | |
581483bf | 2410 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2411 | int r; |
2412 | ||
1ae464e0 TA |
2413 | assert_return(j, -EINVAL); |
2414 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2415 | assert_return(from || to, -EINVAL); | |
2416 | assert_return(from != to, -EINVAL); | |
08984293 | 2417 | |
c1f906bd | 2418 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2419 | usec_t fr, t; |
2420 | ||
2421 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2422 | if (r == -ENOENT) |
2423 | continue; | |
08984293 LP |
2424 | if (r < 0) |
2425 | return r; | |
2426 | if (r == 0) | |
2427 | continue; | |
2428 | ||
2429 | if (first) { | |
581483bf LP |
2430 | fmin = fr; |
2431 | tmax = t; | |
08984293 LP |
2432 | first = false; |
2433 | } else { | |
581483bf LP |
2434 | fmin = MIN(fr, fmin); |
2435 | tmax = MAX(t, tmax); | |
08984293 LP |
2436 | } |
2437 | } | |
2438 | ||
581483bf LP |
2439 | if (from) |
2440 | *from = fmin; | |
2441 | if (to) | |
2442 | *to = tmax; | |
2443 | ||
08984293 LP |
2444 | return first ? 0 : 1; |
2445 | } | |
2446 | ||
2447 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2448 | Iterator i; | |
2449 | JournalFile *f; | |
1651e2c6 | 2450 | bool found = false; |
08984293 LP |
2451 | int r; |
2452 | ||
1ae464e0 TA |
2453 | assert_return(j, -EINVAL); |
2454 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2455 | assert_return(from || to, -EINVAL); | |
2456 | assert_return(from != to, -EINVAL); | |
08984293 | 2457 | |
c1f906bd | 2458 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2459 | usec_t fr, t; |
2460 | ||
2461 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2462 | if (r == -ENOENT) |
2463 | continue; | |
08984293 LP |
2464 | if (r < 0) |
2465 | return r; | |
2466 | if (r == 0) | |
2467 | continue; | |
2468 | ||
1651e2c6 | 2469 | if (found) { |
08984293 | 2470 | if (from) |
1651e2c6 | 2471 | *from = MIN(fr, *from); |
08984293 | 2472 | if (to) |
1651e2c6 | 2473 | *to = MAX(t, *to); |
08984293 LP |
2474 | } else { |
2475 | if (from) | |
1651e2c6 | 2476 | *from = fr; |
08984293 | 2477 | if (to) |
1651e2c6 ZJS |
2478 | *to = t; |
2479 | found = true; | |
08984293 LP |
2480 | } |
2481 | } | |
2482 | ||
1651e2c6 | 2483 | return found; |
08984293 LP |
2484 | } |
2485 | ||
dca6219e LP |
2486 | void journal_print_header(sd_journal *j) { |
2487 | Iterator i; | |
2488 | JournalFile *f; | |
2489 | bool newline = false; | |
2490 | ||
2491 | assert(j); | |
2492 | ||
c1f906bd | 2493 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2494 | if (newline) |
2495 | putchar('\n'); | |
2496 | else | |
2497 | newline = true; | |
2498 | ||
2499 | journal_file_print_header(f); | |
2500 | } | |
2501 | } | |
08984293 | 2502 | |
a1a03e30 LP |
2503 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2504 | Iterator i; | |
2505 | JournalFile *f; | |
2506 | uint64_t sum = 0; | |
2507 | ||
1ae464e0 TA |
2508 | assert_return(j, -EINVAL); |
2509 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2510 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2511 | |
c1f906bd | 2512 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2513 | struct stat st; |
2514 | ||
2515 | if (fstat(f->fd, &st) < 0) | |
2516 | return -errno; | |
2517 | ||
2518 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2519 | } | |
2520 | ||
2521 | *bytes = sum; | |
2522 | return 0; | |
2523 | } | |
2524 | ||
3c1668da LP |
2525 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2526 | char *f; | |
2527 | ||
1ae464e0 TA |
2528 | assert_return(j, -EINVAL); |
2529 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2530 | assert_return(!isempty(field), -EINVAL); | |
2531 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2532 | |
2533 | f = strdup(field); | |
2534 | if (!f) | |
2535 | return -ENOMEM; | |
2536 | ||
2537 | free(j->unique_field); | |
2538 | j->unique_field = f; | |
2539 | j->unique_file = NULL; | |
2540 | j->unique_offset = 0; | |
360af4cf | 2541 | j->unique_file_lost = false; |
3c1668da LP |
2542 | |
2543 | return 0; | |
2544 | } | |
2545 | ||
2546 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2547 | size_t k; |
19a2bd80 | 2548 | |
1ae464e0 TA |
2549 | assert_return(j, -EINVAL); |
2550 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2551 | assert_return(data, -EINVAL); | |
2552 | assert_return(l, -EINVAL); | |
2553 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2554 | |
3c1668da | 2555 | k = strlen(j->unique_field); |
19a2bd80 | 2556 | |
3c1668da | 2557 | if (!j->unique_file) { |
360af4cf ZJS |
2558 | if (j->unique_file_lost) |
2559 | return 0; | |
2560 | ||
c1f906bd | 2561 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2562 | if (!j->unique_file) |
2563 | return 0; | |
360af4cf | 2564 | |
3c1668da LP |
2565 | j->unique_offset = 0; |
2566 | } | |
19a2bd80 | 2567 | |
3c1668da LP |
2568 | for (;;) { |
2569 | JournalFile *of; | |
2570 | Iterator i; | |
ae97089d | 2571 | Object *o; |
3c1668da LP |
2572 | const void *odata; |
2573 | size_t ol; | |
2574 | bool found; | |
ae97089d | 2575 | int r; |
06cc69d4 | 2576 | void *release_cookie; |
3c1668da | 2577 | |
bdc02927 | 2578 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2579 | if (j->unique_offset == 0) { |
2580 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2581 | if (r < 0) | |
2582 | return r; | |
2583 | ||
2584 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2585 | } else { | |
2586 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2587 | if (r < 0) | |
2588 | return r; | |
2589 | ||
2590 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2591 | } | |
2592 | ||
2593 | /* We reached the end of the list? Then start again, with the next file */ | |
2594 | if (j->unique_offset == 0) { | |
c1f906bd | 2595 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2596 | if (!j->unique_file) |
3c1668da LP |
2597 | return 0; |
2598 | ||
3c1668da LP |
2599 | continue; |
2600 | } | |
2601 | ||
2602 | /* We do not use the type context here, but 0 instead, | |
2603 | * so that we can look at this data object at the same | |
2604 | * time as one on another file */ | |
2605 | r = journal_file_move_to_object(j->unique_file, 0, j->unique_offset, &o); | |
2606 | if (r < 0) | |
2607 | return r; | |
2608 | ||
2609 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2610 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2611 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2612 | j->unique_file->path, j->unique_offset, |
2613 | o->object.type, OBJECT_DATA); | |
3c1668da | 2614 | return -EBADMSG; |
ae97089d ZJS |
2615 | } |
2616 | ||
06cc69d4 | 2617 | r = journal_file_object_keep(j->unique_file, o, j->unique_offset, &release_cookie); |
ae97089d ZJS |
2618 | if (r < 0) |
2619 | return r; | |
3c1668da | 2620 | |
93b73b06 | 2621 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2622 | if (r < 0) |
2623 | return r; | |
2624 | ||
0f99f74a ZJS |
2625 | /* Check if we have at least the field name and "=". */ |
2626 | if (ol <= k) { | |
2627 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2628 | j->unique_file->path, j->unique_offset, | |
2629 | ol, k + 1); | |
2630 | return -EBADMSG; | |
2631 | } | |
2632 | ||
2633 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2634 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2635 | j->unique_file->path, j->unique_offset, | |
2636 | j->unique_field); | |
2637 | return -EBADMSG; | |
2638 | } | |
2639 | ||
3c1668da LP |
2640 | /* OK, now let's see if we already returned this data |
2641 | * object by checking if it exists in the earlier | |
2642 | * traversed files. */ | |
2643 | found = false; | |
c1f906bd | 2644 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2645 | Object *oo; |
2646 | uint64_t op; | |
2647 | ||
2648 | if (of == j->unique_file) | |
2649 | break; | |
2650 | ||
2651 | /* Skip this file it didn't have any fields | |
2652 | * indexed */ | |
2653 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2654 | le64toh(of->header->n_fields) <= 0) | |
2655 | continue; | |
2656 | ||
2657 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2658 | if (r < 0) | |
2659 | return r; | |
2660 | ||
2661 | if (r > 0) | |
2662 | found = true; | |
2663 | } | |
2664 | ||
06cc69d4 | 2665 | r = journal_file_object_release(j->unique_file, release_cookie); |
ae97089d ZJS |
2666 | if (r < 0) |
2667 | return r; | |
2668 | ||
06cc69d4 JJ |
2669 | if (found) |
2670 | continue; | |
2671 | ||
93b73b06 | 2672 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2673 | if (r < 0) |
2674 | return r; | |
2675 | ||
2676 | return 1; | |
2677 | } | |
2678 | } | |
2679 | ||
115646c7 | 2680 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2681 | if (!j) |
2682 | return; | |
2683 | ||
2684 | j->unique_file = NULL; | |
2685 | j->unique_offset = 0; | |
360af4cf | 2686 | j->unique_file_lost = false; |
3c1668da | 2687 | } |
85210bff LP |
2688 | |
2689 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
1ae464e0 TA |
2690 | assert_return(j, -EINVAL); |
2691 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2692 | |
2693 | return !j->on_network; | |
2694 | } | |
d4205751 LP |
2695 | |
2696 | static char *lookup_field(const char *field, void *userdata) { | |
2697 | sd_journal *j = userdata; | |
2698 | const void *data; | |
2699 | size_t size, d; | |
2700 | int r; | |
2701 | ||
2702 | assert(field); | |
2703 | assert(j); | |
2704 | ||
2705 | r = sd_journal_get_data(j, field, &data, &size); | |
2706 | if (r < 0 || | |
2707 | size > REPLACE_VAR_MAX) | |
2708 | return strdup(field); | |
2709 | ||
2710 | d = strlen(field) + 1; | |
2711 | ||
2712 | return strndup((const char*) data + d, size - d); | |
2713 | } | |
2714 | ||
2715 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2716 | const void *data; | |
2717 | size_t size; | |
2718 | sd_id128_t id; | |
2719 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2720 | char *t; | |
2721 | int r; | |
2722 | ||
1ae464e0 TA |
2723 | assert_return(j, -EINVAL); |
2724 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2725 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2726 | |
2727 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2728 | if (r < 0) | |
2729 | return r; | |
2730 | ||
2731 | cid = strndup((const char*) data + 11, size - 11); | |
2732 | if (!cid) | |
2733 | return -ENOMEM; | |
2734 | ||
2735 | r = sd_id128_from_string(cid, &id); | |
2736 | if (r < 0) | |
2737 | return r; | |
2738 | ||
844ec79b | 2739 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2740 | if (r < 0) |
2741 | return r; | |
2742 | ||
2743 | t = replace_var(text, lookup_field, j); | |
2744 | if (!t) | |
2745 | return -ENOMEM; | |
2746 | ||
2747 | *ret = t; | |
2748 | return 0; | |
2749 | } | |
8f1e860f LP |
2750 | |
2751 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2752 | assert_return(ret, -EINVAL); |
8f1e860f | 2753 | |
844ec79b | 2754 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2755 | } |
93b73b06 LP |
2756 | |
2757 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2758 | assert_return(j, -EINVAL); |
2759 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2760 | |
2761 | j->data_threshold = sz; | |
2762 | return 0; | |
2763 | } | |
2764 | ||
2765 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2766 | assert_return(j, -EINVAL); |
2767 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2768 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2769 | |
2770 | *sz = j->data_threshold; | |
2771 | return 0; | |
2772 | } |