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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" |
9eb977db | 36 | #include "path-util.h" |
de7b95cd | 37 | #include "lookup3.h" |
807e17f0 | 38 | #include "compress.h" |
cf244689 | 39 | #include "journal-internal.h" |
85210bff | 40 | #include "missing.h" |
d4205751 LP |
41 | #include "catalog.h" |
42 | #include "replace-var.h" | |
87d2c1ff | 43 | |
cab8ac60 LP |
44 | #define JOURNAL_FILES_MAX 1024 |
45 | ||
85210bff LP |
46 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
47 | ||
d4205751 LP |
48 | #define REPLACE_VAR_MAX 256 |
49 | ||
93b73b06 LP |
50 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
51 | ||
6fe391c5 ZJS |
52 | /* We return an error here only if we didn't manage to |
53 | memorize the real error. */ | |
3ac251b8 LP |
54 | static int set_put_error(sd_journal *j, int r) { |
55 | int k; | |
56 | ||
6fe391c5 ZJS |
57 | if (r >= 0) |
58 | return r; | |
59 | ||
3ac251b8 LP |
60 | k = set_ensure_allocated(&j->errors, trivial_hash_func, trivial_compare_func); |
61 | if (k < 0) | |
62 | return k; | |
63 | ||
64 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
65 | } |
66 | ||
de190aef | 67 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
68 | Iterator i; |
69 | JournalFile *f; | |
70 | ||
71 | assert(j); | |
72 | ||
73 | j->current_file = NULL; | |
74 | j->current_field = 0; | |
75 | ||
76 | HASHMAP_FOREACH(f, j->files, i) | |
77 | f->current_offset = 0; | |
78 | } | |
79 | ||
de190aef LP |
80 | static void reset_location(sd_journal *j) { |
81 | assert(j); | |
82 | ||
83 | detach_location(j); | |
84 | zero(j->current_location); | |
85 | } | |
86 | ||
a87247dd | 87 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 88 | assert(l); |
a87247dd | 89 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
90 | assert(f); |
91 | assert(o->object.type == OBJECT_ENTRY); | |
92 | ||
a87247dd | 93 | l->type = type; |
de190aef LP |
94 | l->seqnum = le64toh(o->entry.seqnum); |
95 | l->seqnum_id = f->header->seqnum_id; | |
96 | l->realtime = le64toh(o->entry.realtime); | |
97 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 98 | l->boot_id = o->entry.boot_id; |
de190aef LP |
99 | l->xor_hash = le64toh(o->entry.xor_hash); |
100 | ||
101 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
102 | } | |
103 | ||
a87247dd | 104 | static void set_location(sd_journal *j, LocationType type, JournalFile *f, Object *o, uint64_t offset) { |
de190aef | 105 | assert(j); |
a87247dd | 106 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
107 | assert(f); |
108 | assert(o); | |
109 | ||
a87247dd | 110 | init_location(&j->current_location, type, f, o); |
de190aef LP |
111 | |
112 | j->current_file = f; | |
113 | j->current_field = 0; | |
114 | ||
115 | f->current_offset = offset; | |
116 | } | |
117 | ||
cbdca852 LP |
118 | static int match_is_valid(const void *data, size_t size) { |
119 | const char *b, *p; | |
120 | ||
121 | assert(data); | |
122 | ||
123 | if (size < 2) | |
124 | return false; | |
125 | ||
126 | if (startswith(data, "__")) | |
127 | return false; | |
128 | ||
129 | b = data; | |
130 | for (p = b; p < b + size; p++) { | |
131 | ||
132 | if (*p == '=') | |
133 | return p > b; | |
134 | ||
135 | if (*p == '_') | |
136 | continue; | |
137 | ||
138 | if (*p >= 'A' && *p <= 'Z') | |
139 | continue; | |
140 | ||
141 | if (*p >= '0' && *p <= '9') | |
142 | continue; | |
143 | ||
144 | return false; | |
145 | } | |
146 | ||
147 | return false; | |
148 | } | |
149 | ||
150 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
151 | const uint8_t *a = _a, *b = _b; |
152 | size_t j; | |
de190aef LP |
153 | |
154 | for (j = 0; j < s && j < t; j++) { | |
155 | ||
de190aef | 156 | if (a[j] != b[j]) |
cbdca852 | 157 | return false; |
de190aef | 158 | |
cbdca852 LP |
159 | if (a[j] == '=') |
160 | return true; | |
de190aef LP |
161 | } |
162 | ||
cbdca852 LP |
163 | return true; |
164 | } | |
165 | ||
166 | static Match *match_new(Match *p, MatchType t) { | |
167 | Match *m; | |
168 | ||
169 | m = new0(Match, 1); | |
170 | if (!m) | |
171 | return NULL; | |
172 | ||
173 | m->type = t; | |
174 | ||
175 | if (p) { | |
176 | m->parent = p; | |
177 | LIST_PREPEND(Match, matches, p->matches, m); | |
178 | } | |
179 | ||
180 | return m; | |
181 | } | |
182 | ||
183 | static void match_free(Match *m) { | |
184 | assert(m); | |
185 | ||
186 | while (m->matches) | |
187 | match_free(m->matches); | |
188 | ||
189 | if (m->parent) | |
190 | LIST_REMOVE(Match, matches, m->parent->matches, m); | |
191 | ||
192 | free(m->data); | |
193 | free(m); | |
194 | } | |
195 | ||
196 | static void match_free_if_empty(Match *m) { | |
197 | assert(m); | |
198 | ||
199 | if (m->matches) | |
200 | return; | |
201 | ||
202 | match_free(m); | |
de190aef LP |
203 | } |
204 | ||
a5344d2c | 205 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 206 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 207 | le64_t le_hash; |
87d2c1ff | 208 | |
a5344d2c LP |
209 | if (!j) |
210 | return -EINVAL; | |
cbdca852 | 211 | |
a5344d2c LP |
212 | if (!data) |
213 | return -EINVAL; | |
cbdca852 LP |
214 | |
215 | if (size == 0) | |
216 | size = strlen(data); | |
217 | ||
218 | if (!match_is_valid(data, size)) | |
1cc101f1 LP |
219 | return -EINVAL; |
220 | ||
cd34b3c6 HH |
221 | /* level 0: AND term |
222 | * level 1: OR terms | |
223 | * level 2: AND terms | |
224 | * level 3: OR terms | |
225 | * level 4: concrete matches */ | |
cbdca852 LP |
226 | |
227 | if (!j->level0) { | |
cd34b3c6 | 228 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
229 | if (!j->level0) |
230 | return -ENOMEM; | |
231 | } | |
232 | ||
233 | if (!j->level1) { | |
cd34b3c6 | 234 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
235 | if (!j->level1) |
236 | return -ENOMEM; | |
237 | } | |
238 | ||
cd34b3c6 HH |
239 | if (!j->level2) { |
240 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
241 | if (!j->level2) | |
242 | return -ENOMEM; | |
243 | } | |
244 | ||
245 | assert(j->level0->type == MATCH_AND_TERM); | |
246 | assert(j->level1->type == MATCH_OR_TERM); | |
247 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 248 | |
de190aef LP |
249 | le_hash = htole64(hash64(data, size)); |
250 | ||
cd34b3c6 HH |
251 | LIST_FOREACH(matches, l3, j->level2->matches) { |
252 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 253 | |
cd34b3c6 HH |
254 | LIST_FOREACH(matches, l4, l3->matches) { |
255 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 256 | |
cbdca852 LP |
257 | /* Exactly the same match already? Then ignore |
258 | * this addition */ | |
cd34b3c6 HH |
259 | if (l4->le_hash == le_hash && |
260 | l4->size == size && | |
261 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
262 | return 0; |
263 | ||
264 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
265 | if (same_field(data, size, l4->data, l4->size)) { |
266 | add_here = l3; | |
cbdca852 LP |
267 | break; |
268 | } | |
269 | } | |
270 | ||
271 | if (add_here) | |
272 | break; | |
de190aef LP |
273 | } |
274 | ||
cbdca852 | 275 | if (!add_here) { |
cd34b3c6 | 276 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
277 | if (!add_here) |
278 | goto fail; | |
279 | } | |
280 | ||
281 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 282 | if (!m) |
cbdca852 | 283 | goto fail; |
87d2c1ff | 284 | |
cbdca852 | 285 | m->le_hash = le_hash; |
1cc101f1 | 286 | m->size = size; |
cbdca852 LP |
287 | m->data = memdup(data, size); |
288 | if (!m->data) | |
289 | goto fail; | |
290 | ||
291 | detach_location(j); | |
292 | ||
293 | return 0; | |
294 | ||
295 | fail: | |
296 | if (add_here) | |
297 | match_free_if_empty(add_here); | |
298 | ||
cd34b3c6 HH |
299 | if (j->level2) |
300 | match_free_if_empty(j->level2); | |
301 | ||
cbdca852 LP |
302 | if (j->level1) |
303 | match_free_if_empty(j->level1); | |
304 | ||
305 | if (j->level0) | |
306 | match_free_if_empty(j->level0); | |
307 | ||
308 | return -ENOMEM; | |
309 | } | |
310 | ||
cd34b3c6 | 311 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
cbdca852 | 312 | assert(j); |
1cc101f1 | 313 | |
cbdca852 LP |
314 | if (!j->level0) |
315 | return 0; | |
316 | ||
317 | if (!j->level1) | |
318 | return 0; | |
319 | ||
320 | if (!j->level1->matches) | |
321 | return 0; | |
322 | ||
cd34b3c6 HH |
323 | j->level1 = NULL; |
324 | j->level2 = NULL; | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
329 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
330 | assert(j); | |
331 | ||
332 | if (!j->level0) | |
333 | return 0; | |
334 | ||
335 | if (!j->level1) | |
336 | return 0; | |
337 | ||
338 | if (!j->level2) | |
339 | return 0; | |
340 | ||
341 | if (!j->level2->matches) | |
342 | return 0; | |
cbdca852 | 343 | |
cd34b3c6 | 344 | j->level2 = NULL; |
cbdca852 LP |
345 | return 0; |
346 | } | |
347 | ||
348 | static char *match_make_string(Match *m) { | |
349 | char *p, *r; | |
350 | Match *i; | |
351 | bool enclose = false; | |
352 | ||
353 | if (!m) | |
354 | return strdup(""); | |
355 | ||
356 | if (m->type == MATCH_DISCRETE) | |
357 | return strndup(m->data, m->size); | |
358 | ||
359 | p = NULL; | |
360 | LIST_FOREACH(matches, i, m->matches) { | |
361 | char *t, *k; | |
362 | ||
363 | t = match_make_string(i); | |
364 | if (!t) { | |
365 | free(p); | |
366 | return NULL; | |
367 | } | |
368 | ||
369 | if (p) { | |
b7def684 | 370 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
371 | free(p); |
372 | free(t); | |
373 | ||
374 | if (!k) | |
375 | return NULL; | |
376 | ||
377 | p = k; | |
378 | ||
379 | enclose = true; | |
380 | } else { | |
381 | free(p); | |
382 | p = t; | |
383 | } | |
87d2c1ff LP |
384 | } |
385 | ||
cbdca852 | 386 | if (enclose) { |
b7def684 | 387 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
388 | free(p); |
389 | return r; | |
390 | } | |
87d2c1ff | 391 | |
cbdca852 LP |
392 | return p; |
393 | } | |
de7b95cd | 394 | |
cbdca852 LP |
395 | char *journal_make_match_string(sd_journal *j) { |
396 | assert(j); | |
8f9b6cd9 | 397 | |
cbdca852 | 398 | return match_make_string(j->level0); |
87d2c1ff LP |
399 | } |
400 | ||
a5344d2c | 401 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
cbdca852 | 402 | |
a5344d2c LP |
403 | if (!j) |
404 | return; | |
87d2c1ff | 405 | |
cbdca852 LP |
406 | if (j->level0) |
407 | match_free(j->level0); | |
de7b95cd | 408 | |
cd34b3c6 | 409 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 410 | |
de190aef | 411 | detach_location(j); |
87d2c1ff LP |
412 | } |
413 | ||
468b21de LP |
414 | static int compare_entry_order(JournalFile *af, Object *_ao, |
415 | JournalFile *bf, uint64_t bp) { | |
87d2c1ff | 416 | |
cec736d2 | 417 | uint64_t a, b; |
468b21de LP |
418 | Object *ao, *bo; |
419 | int r; | |
87d2c1ff | 420 | |
de190aef | 421 | assert(af); |
de190aef | 422 | assert(bf); |
468b21de LP |
423 | assert(_ao); |
424 | ||
425 | /* The mmap cache might invalidate the object from the first | |
426 | * file if we look at the one from the second file. Hence | |
427 | * temporarily copy the header of the first one, and look at | |
428 | * that only. */ | |
429 | ao = alloca(offsetof(EntryObject, items)); | |
430 | memcpy(ao, _ao, offsetof(EntryObject, items)); | |
431 | ||
432 | r = journal_file_move_to_object(bf, OBJECT_ENTRY, bp, &bo); | |
433 | if (r < 0) | |
434 | return strcmp(af->path, bf->path); | |
de190aef | 435 | |
ae2cc8ef | 436 | /* We operate on two different files here, hence we can access |
1cc101f1 LP |
437 | * two objects at the same time, which we normally can't. |
438 | * | |
439 | * If contents and timestamps match, these entries are | |
440 | * identical, even if the seqnum does not match */ | |
441 | ||
442 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id) && | |
443 | ao->entry.monotonic == bo->entry.monotonic && | |
444 | ao->entry.realtime == bo->entry.realtime && | |
445 | ao->entry.xor_hash == bo->entry.xor_hash) | |
446 | return 0; | |
ae2cc8ef | 447 | |
cec736d2 | 448 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { |
87d2c1ff | 449 | |
cec736d2 LP |
450 | /* If this is from the same seqnum source, compare |
451 | * seqnums */ | |
452 | a = le64toh(ao->entry.seqnum); | |
453 | b = le64toh(bo->entry.seqnum); | |
87d2c1ff | 454 | |
ae2cc8ef LP |
455 | if (a < b) |
456 | return -1; | |
457 | if (a > b) | |
458 | return 1; | |
1cc101f1 LP |
459 | |
460 | /* Wow! This is weird, different data but the same | |
461 | * seqnums? Something is borked, but let's make the | |
462 | * best of it and compare by time. */ | |
ae2cc8ef | 463 | } |
87d2c1ff | 464 | |
ae2cc8ef | 465 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id)) { |
87d2c1ff | 466 | |
cec736d2 LP |
467 | /* If the boot id matches compare monotonic time */ |
468 | a = le64toh(ao->entry.monotonic); | |
469 | b = le64toh(bo->entry.monotonic); | |
87d2c1ff | 470 | |
ae2cc8ef LP |
471 | if (a < b) |
472 | return -1; | |
473 | if (a > b) | |
474 | return 1; | |
87d2c1ff LP |
475 | } |
476 | ||
ae2cc8ef LP |
477 | /* Otherwise compare UTC time */ |
478 | a = le64toh(ao->entry.realtime); | |
c4aff78b | 479 | b = le64toh(bo->entry.realtime); |
ae2cc8ef LP |
480 | |
481 | if (a < b) | |
482 | return -1; | |
483 | if (a > b) | |
484 | return 1; | |
485 | ||
486 | /* Finally, compare by contents */ | |
487 | a = le64toh(ao->entry.xor_hash); | |
c4aff78b | 488 | b = le64toh(bo->entry.xor_hash); |
ae2cc8ef LP |
489 | |
490 | if (a < b) | |
491 | return -1; | |
492 | if (a > b) | |
493 | return 1; | |
494 | ||
495 | return 0; | |
87d2c1ff LP |
496 | } |
497 | ||
de190aef LP |
498 | static int compare_with_location(JournalFile *af, Object *ao, Location *l) { |
499 | uint64_t a; | |
500 | ||
501 | assert(af); | |
502 | assert(ao); | |
503 | assert(l); | |
a87247dd | 504 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
505 | |
506 | if (l->monotonic_set && | |
507 | sd_id128_equal(ao->entry.boot_id, l->boot_id) && | |
508 | l->realtime_set && | |
509 | le64toh(ao->entry.realtime) == l->realtime && | |
510 | l->xor_hash_set && | |
511 | le64toh(ao->entry.xor_hash) == l->xor_hash) | |
512 | return 0; | |
513 | ||
514 | if (l->seqnum_set && | |
515 | sd_id128_equal(af->header->seqnum_id, l->seqnum_id)) { | |
516 | ||
517 | a = le64toh(ao->entry.seqnum); | |
518 | ||
519 | if (a < l->seqnum) | |
520 | return -1; | |
521 | if (a > l->seqnum) | |
522 | return 1; | |
523 | } | |
524 | ||
525 | if (l->monotonic_set && | |
526 | sd_id128_equal(ao->entry.boot_id, l->boot_id)) { | |
527 | ||
528 | a = le64toh(ao->entry.monotonic); | |
529 | ||
530 | if (a < l->monotonic) | |
531 | return -1; | |
532 | if (a > l->monotonic) | |
533 | return 1; | |
534 | } | |
535 | ||
536 | if (l->realtime_set) { | |
537 | ||
538 | a = le64toh(ao->entry.realtime); | |
539 | ||
540 | if (a < l->realtime) | |
541 | return -1; | |
542 | if (a > l->realtime) | |
543 | return 1; | |
544 | } | |
545 | ||
546 | if (l->xor_hash_set) { | |
547 | a = le64toh(ao->entry.xor_hash); | |
548 | ||
549 | if (a < l->xor_hash) | |
550 | return -1; | |
551 | if (a > l->xor_hash) | |
552 | return 1; | |
553 | } | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
cbdca852 LP |
558 | static int next_for_match( |
559 | sd_journal *j, | |
560 | Match *m, | |
561 | JournalFile *f, | |
562 | uint64_t after_offset, | |
563 | direction_t direction, | |
564 | Object **ret, | |
565 | uint64_t *offset) { | |
566 | ||
de7b95cd | 567 | int r; |
cbdca852 LP |
568 | uint64_t np = 0; |
569 | Object *n; | |
de7b95cd LP |
570 | |
571 | assert(j); | |
cbdca852 LP |
572 | assert(m); |
573 | assert(f); | |
de7b95cd | 574 | |
cbdca852 LP |
575 | if (m->type == MATCH_DISCRETE) { |
576 | uint64_t dp; | |
de190aef | 577 | |
cbdca852 | 578 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
579 | if (r <= 0) |
580 | return r; | |
581 | ||
cbdca852 | 582 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 583 | |
cbdca852 LP |
584 | } else if (m->type == MATCH_OR_TERM) { |
585 | Match *i; | |
de7b95cd | 586 | |
cbdca852 | 587 | /* Find the earliest match beyond after_offset */ |
de190aef | 588 | |
cbdca852 LP |
589 | LIST_FOREACH(matches, i, m->matches) { |
590 | uint64_t cp; | |
de190aef | 591 | |
cbdca852 | 592 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
593 | if (r < 0) |
594 | return r; | |
cbdca852 LP |
595 | else if (r > 0) { |
596 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
597 | np = cp; | |
598 | } | |
599 | } | |
b4e5f920 | 600 | |
cbdca852 LP |
601 | } else if (m->type == MATCH_AND_TERM) { |
602 | Match *i; | |
603 | bool continue_looking; | |
de190aef | 604 | |
cbdca852 LP |
605 | /* Always jump to the next matching entry and repeat |
606 | * this until we fine and offset that matches for all | |
607 | * matches. */ | |
de190aef | 608 | |
cbdca852 LP |
609 | if (!m->matches) |
610 | return 0; | |
de7b95cd | 611 | |
cbdca852 LP |
612 | np = 0; |
613 | do { | |
614 | continue_looking = false; | |
de190aef | 615 | |
cbdca852 LP |
616 | LIST_FOREACH(matches, i, m->matches) { |
617 | uint64_t cp, limit; | |
de190aef | 618 | |
cbdca852 LP |
619 | if (np == 0) |
620 | limit = after_offset; | |
621 | else if (direction == DIRECTION_DOWN) | |
622 | limit = MAX(np, after_offset); | |
623 | else | |
624 | limit = MIN(np, after_offset); | |
de190aef | 625 | |
cbdca852 LP |
626 | r = next_for_match(j, i, f, limit, direction, NULL, &cp); |
627 | if (r <= 0) | |
628 | return r; | |
de190aef | 629 | |
cbdca852 | 630 | if ((direction == DIRECTION_DOWN ? cp >= after_offset : cp <= after_offset) && |
23e97f7d | 631 | (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np))) { |
cbdca852 LP |
632 | np = cp; |
633 | continue_looking = true; | |
de190aef LP |
634 | } |
635 | } | |
de190aef | 636 | |
cbdca852 LP |
637 | } while (continue_looking); |
638 | } | |
de190aef | 639 | |
cbdca852 LP |
640 | if (np == 0) |
641 | return 0; | |
de190aef | 642 | |
cbdca852 LP |
643 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
644 | if (r < 0) | |
645 | return r; | |
de7b95cd | 646 | |
de190aef | 647 | if (ret) |
cbdca852 | 648 | *ret = n; |
de190aef | 649 | if (offset) |
cbdca852 | 650 | *offset = np; |
de190aef LP |
651 | |
652 | return 1; | |
653 | } | |
654 | ||
cbdca852 LP |
655 | static int find_location_for_match( |
656 | sd_journal *j, | |
657 | Match *m, | |
658 | JournalFile *f, | |
659 | direction_t direction, | |
660 | Object **ret, | |
661 | uint64_t *offset) { | |
662 | ||
de190aef | 663 | int r; |
de190aef LP |
664 | |
665 | assert(j); | |
cbdca852 | 666 | assert(m); |
de190aef | 667 | assert(f); |
de190aef | 668 | |
cbdca852 LP |
669 | if (m->type == MATCH_DISCRETE) { |
670 | uint64_t dp; | |
de190aef | 671 | |
cbdca852 | 672 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
673 | if (r <= 0) |
674 | return r; | |
675 | ||
cbdca852 | 676 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 677 | |
cbdca852 LP |
678 | if (j->current_location.type == LOCATION_HEAD) |
679 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
680 | if (j->current_location.type == LOCATION_TAIL) | |
681 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
682 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
683 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
684 | if (j->current_location.monotonic_set) { | |
685 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
686 | if (r != -ENOENT) | |
687 | return r; | |
688 | } | |
689 | if (j->current_location.realtime_set) | |
690 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 691 | |
cbdca852 | 692 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 693 | |
cbdca852 LP |
694 | } else if (m->type == MATCH_OR_TERM) { |
695 | uint64_t np = 0; | |
696 | Object *n; | |
697 | Match *i; | |
de7b95cd | 698 | |
cbdca852 | 699 | /* Find the earliest match */ |
de7b95cd | 700 | |
cbdca852 LP |
701 | LIST_FOREACH(matches, i, m->matches) { |
702 | uint64_t cp; | |
703 | ||
704 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
705 | if (r < 0) | |
706 | return r; | |
707 | else if (r > 0) { | |
708 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
709 | np = cp; | |
de190aef | 710 | } |
cbdca852 | 711 | } |
de190aef | 712 | |
cbdca852 LP |
713 | if (np == 0) |
714 | return 0; | |
de7b95cd | 715 | |
cbdca852 LP |
716 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
717 | if (r < 0) | |
718 | return r; | |
de7b95cd | 719 | |
cbdca852 LP |
720 | if (ret) |
721 | *ret = n; | |
722 | if (offset) | |
723 | *offset = np; | |
de190aef | 724 | |
cbdca852 | 725 | return 1; |
e892bd17 | 726 | |
cbdca852 LP |
727 | } else { |
728 | Match *i; | |
729 | uint64_t np = 0; | |
730 | ||
731 | assert(m->type == MATCH_AND_TERM); | |
732 | ||
733 | /* First jump to the last match, and then find the | |
734 | * next one where all matches match */ | |
735 | ||
736 | if (!m->matches) | |
737 | return 0; | |
738 | ||
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) | |
4b067dc9 LP |
744 | return r; |
745 | ||
cbdca852 LP |
746 | if (np == 0 || (direction == DIRECTION_DOWN ? np < cp : np > cp)) |
747 | np = cp; | |
de7b95cd LP |
748 | } |
749 | ||
cbdca852 LP |
750 | return next_for_match(j, m, f, np, direction, ret, offset); |
751 | } | |
752 | } | |
de190aef | 753 | |
cbdca852 LP |
754 | static int find_location_with_matches( |
755 | sd_journal *j, | |
756 | JournalFile *f, | |
757 | direction_t direction, | |
758 | Object **ret, | |
759 | uint64_t *offset) { | |
760 | ||
761 | int r; | |
762 | ||
763 | assert(j); | |
764 | assert(f); | |
765 | assert(ret); | |
766 | assert(offset); | |
767 | ||
768 | if (!j->level0) { | |
769 | /* No matches is simple */ | |
770 | ||
771 | if (j->current_location.type == LOCATION_HEAD) | |
772 | return journal_file_next_entry(f, NULL, 0, DIRECTION_DOWN, ret, offset); | |
773 | if (j->current_location.type == LOCATION_TAIL) | |
774 | return journal_file_next_entry(f, NULL, 0, DIRECTION_UP, ret, offset); | |
775 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
776 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
777 | if (j->current_location.monotonic_set) { | |
778 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
779 | if (r != -ENOENT) | |
780 | return r; | |
de7b95cd | 781 | } |
cbdca852 LP |
782 | if (j->current_location.realtime_set) |
783 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 784 | |
cbdca852 LP |
785 | return journal_file_next_entry(f, NULL, 0, direction, ret, offset); |
786 | } else | |
787 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
788 | } | |
de7b95cd | 789 | |
cbdca852 LP |
790 | static int next_with_matches( |
791 | sd_journal *j, | |
792 | JournalFile *f, | |
793 | direction_t direction, | |
794 | Object **ret, | |
795 | uint64_t *offset) { | |
796 | ||
797 | Object *c; | |
798 | uint64_t cp; | |
799 | ||
800 | assert(j); | |
801 | assert(f); | |
802 | assert(ret); | |
803 | assert(offset); | |
804 | ||
805 | c = *ret; | |
806 | cp = *offset; | |
807 | ||
808 | /* No matches is easy. We simple advance the file | |
809 | * pointer by one. */ | |
810 | if (!j->level0) | |
811 | return journal_file_next_entry(f, c, cp, direction, ret, offset); | |
812 | ||
813 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 814 | * with an offset at least one step larger */ |
cbdca852 | 815 | return next_for_match(j, j->level0, f, direction == DIRECTION_DOWN ? cp+1 : cp-1, direction, ret, offset); |
de7b95cd LP |
816 | } |
817 | ||
de190aef LP |
818 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction, Object **ret, uint64_t *offset) { |
819 | Object *c; | |
820 | uint64_t cp; | |
cbdca852 | 821 | int r; |
de190aef LP |
822 | |
823 | assert(j); | |
824 | assert(f); | |
825 | ||
826 | if (f->current_offset > 0) { | |
466ccd92 LP |
827 | cp = f->current_offset; |
828 | ||
829 | r = journal_file_move_to_object(f, OBJECT_ENTRY, cp, &c); | |
de190aef LP |
830 | if (r < 0) |
831 | return r; | |
832 | ||
de190aef LP |
833 | r = next_with_matches(j, f, direction, &c, &cp); |
834 | if (r <= 0) | |
835 | return r; | |
de190aef | 836 | } else { |
cbdca852 | 837 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
838 | if (r <= 0) |
839 | return r; | |
de190aef LP |
840 | } |
841 | ||
cbdca852 LP |
842 | /* OK, we found the spot, now let's advance until to an entry |
843 | * that is actually different from what we were previously | |
844 | * looking at. This is necessary to handle entries which exist | |
845 | * in two (or more) journal files, and which shall all be | |
846 | * suppressed but one. */ | |
847 | ||
de190aef LP |
848 | for (;;) { |
849 | bool found; | |
850 | ||
851 | if (j->current_location.type == LOCATION_DISCRETE) { | |
852 | int k; | |
853 | ||
854 | k = compare_with_location(f, c, &j->current_location); | |
855 | if (direction == DIRECTION_DOWN) | |
cbdca852 | 856 | found = k > 0; |
de190aef | 857 | else |
cbdca852 | 858 | found = k < 0; |
de190aef LP |
859 | } else |
860 | found = true; | |
861 | ||
862 | if (found) { | |
863 | if (ret) | |
864 | *ret = c; | |
865 | if (offset) | |
866 | *offset = cp; | |
867 | return 1; | |
868 | } | |
869 | ||
870 | r = next_with_matches(j, f, direction, &c, &cp); | |
871 | if (r <= 0) | |
872 | return r; | |
873 | } | |
874 | } | |
875 | ||
e892bd17 | 876 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de LP |
877 | JournalFile *f, *new_file = NULL; |
878 | uint64_t new_offset = 0; | |
879 | Object *o; | |
880 | uint64_t p; | |
cec736d2 | 881 | Iterator i; |
87d2c1ff LP |
882 | int r; |
883 | ||
a5344d2c LP |
884 | if (!j) |
885 | return -EINVAL; | |
87d2c1ff | 886 | |
cec736d2 | 887 | HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 888 | bool found; |
87d2c1ff | 889 | |
de190aef | 890 | r = next_beyond_location(j, f, direction, &o, &p); |
e590af26 LP |
891 | if (r < 0) { |
892 | log_debug("Can't iterate through %s, ignoring: %s", f->path, strerror(-r)); | |
893 | continue; | |
894 | } else if (r == 0) | |
cec736d2 | 895 | continue; |
87d2c1ff | 896 | |
468b21de | 897 | if (!new_file) |
de190aef LP |
898 | found = true; |
899 | else { | |
900 | int k; | |
901 | ||
468b21de | 902 | k = compare_entry_order(f, o, new_file, new_offset); |
de190aef LP |
903 | |
904 | if (direction == DIRECTION_DOWN) | |
905 | found = k < 0; | |
906 | else | |
907 | found = k > 0; | |
908 | } | |
909 | ||
910 | if (found) { | |
468b21de | 911 | new_file = f; |
cec736d2 | 912 | new_offset = p; |
87d2c1ff | 913 | } |
87d2c1ff LP |
914 | } |
915 | ||
468b21de | 916 | if (!new_file) |
de190aef | 917 | return 0; |
ae2cc8ef | 918 | |
468b21de LP |
919 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_offset, &o); |
920 | if (r < 0) | |
921 | return r; | |
922 | ||
a87247dd | 923 | set_location(j, LOCATION_DISCRETE, new_file, o, new_offset); |
ae2cc8ef | 924 | |
de190aef LP |
925 | return 1; |
926 | } | |
ae2cc8ef | 927 | |
a5344d2c | 928 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
929 | return real_journal_next(j, DIRECTION_DOWN); |
930 | } | |
ae2cc8ef | 931 | |
a5344d2c | 932 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
933 | return real_journal_next(j, DIRECTION_UP); |
934 | } | |
ae2cc8ef | 935 | |
6f003b43 | 936 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 937 | int c = 0, r; |
ae2cc8ef | 938 | |
a5344d2c LP |
939 | if (!j) |
940 | return -EINVAL; | |
de190aef | 941 | |
6f003b43 LP |
942 | if (skip == 0) { |
943 | /* If this is not a discrete skip, then at least | |
944 | * resolve the current location */ | |
945 | if (j->current_location.type != LOCATION_DISCRETE) | |
946 | return real_journal_next(j, direction); | |
947 | ||
948 | return 0; | |
949 | } | |
950 | ||
951 | do { | |
952 | r = real_journal_next(j, direction); | |
de190aef LP |
953 | if (r < 0) |
954 | return r; | |
955 | ||
956 | if (r == 0) | |
957 | return c; | |
958 | ||
959 | skip--; | |
960 | c++; | |
6f003b43 | 961 | } while (skip > 0); |
87d2c1ff | 962 | |
de190aef | 963 | return c; |
87d2c1ff LP |
964 | } |
965 | ||
6f003b43 LP |
966 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
967 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
968 | } | |
de190aef | 969 | |
6f003b43 LP |
970 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
971 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
972 | } |
973 | ||
a5344d2c | 974 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 975 | Object *o; |
87d2c1ff | 976 | int r; |
3fbf9cbb | 977 | char bid[33], sid[33]; |
87d2c1ff | 978 | |
a5344d2c LP |
979 | if (!j) |
980 | return -EINVAL; | |
981 | if (!cursor) | |
982 | return -EINVAL; | |
87d2c1ff | 983 | |
3fbf9cbb LP |
984 | if (!j->current_file || j->current_file->current_offset <= 0) |
985 | return -EADDRNOTAVAIL; | |
87d2c1ff | 986 | |
de190aef | 987 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
988 | if (r < 0) |
989 | return r; | |
990 | ||
3fbf9cbb LP |
991 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
992 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 993 | |
3fbf9cbb | 994 | if (asprintf(cursor, |
934a316c | 995 | "s=%s;i=%llx;b=%s;m=%llx;t=%llx;x=%llx", |
3fbf9cbb LP |
996 | sid, (unsigned long long) le64toh(o->entry.seqnum), |
997 | bid, (unsigned long long) le64toh(o->entry.monotonic), | |
998 | (unsigned long long) le64toh(o->entry.realtime), | |
934a316c | 999 | (unsigned long long) le64toh(o->entry.xor_hash)) < 0) |
3fbf9cbb | 1000 | return -ENOMEM; |
87d2c1ff | 1001 | |
6f47ad30 | 1002 | return 0; |
87d2c1ff LP |
1003 | } |
1004 | ||
a5344d2c | 1005 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
c6511e85 | 1006 | char *w, *state; |
de190aef | 1007 | size_t l; |
de190aef LP |
1008 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
1009 | bool | |
1010 | seqnum_id_set = false, | |
1011 | seqnum_set = false, | |
1012 | boot_id_set = false, | |
1013 | monotonic_set = false, | |
1014 | realtime_set = false, | |
1015 | xor_hash_set = false; | |
1016 | sd_id128_t seqnum_id, boot_id; | |
1017 | ||
a5344d2c LP |
1018 | if (!j) |
1019 | return -EINVAL; | |
c6511e85 | 1020 | if (isempty(cursor)) |
a5344d2c | 1021 | return -EINVAL; |
de190aef LP |
1022 | |
1023 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1024 | char *item; | |
1025 | int k = 0; | |
1026 | ||
1027 | if (l < 2 || w[1] != '=') | |
1028 | return -EINVAL; | |
1029 | ||
1030 | item = strndup(w, l); | |
1031 | if (!item) | |
1032 | return -ENOMEM; | |
1033 | ||
1034 | switch (w[0]) { | |
1035 | ||
1036 | case 's': | |
1037 | seqnum_id_set = true; | |
be3ea5ea | 1038 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
1039 | break; |
1040 | ||
1041 | case 'i': | |
1042 | seqnum_set = true; | |
be3ea5ea | 1043 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
1044 | k = -EINVAL; |
1045 | break; | |
1046 | ||
1047 | case 'b': | |
1048 | boot_id_set = true; | |
be3ea5ea | 1049 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
1050 | break; |
1051 | ||
1052 | case 'm': | |
1053 | monotonic_set = true; | |
be3ea5ea | 1054 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
1055 | k = -EINVAL; |
1056 | break; | |
1057 | ||
1058 | case 't': | |
1059 | realtime_set = true; | |
be3ea5ea | 1060 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1061 | k = -EINVAL; |
1062 | break; | |
1063 | ||
1064 | case 'x': | |
1065 | xor_hash_set = true; | |
be3ea5ea | 1066 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1067 | k = -EINVAL; |
1068 | break; | |
1069 | } | |
1070 | ||
1071 | free(item); | |
1072 | ||
1073 | if (k < 0) | |
1074 | return k; | |
1075 | } | |
1076 | ||
1077 | if ((!seqnum_set || !seqnum_id_set) && | |
1078 | (!monotonic_set || !boot_id_set) && | |
1079 | !realtime_set) | |
1080 | return -EINVAL; | |
1081 | ||
1082 | reset_location(j); | |
1083 | ||
a87247dd | 1084 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1085 | |
1086 | if (realtime_set) { | |
1087 | j->current_location.realtime = (uint64_t) realtime; | |
1088 | j->current_location.realtime_set = true; | |
1089 | } | |
1090 | ||
1091 | if (seqnum_set && seqnum_id_set) { | |
1092 | j->current_location.seqnum = (uint64_t) seqnum; | |
1093 | j->current_location.seqnum_id = seqnum_id; | |
1094 | j->current_location.seqnum_set = true; | |
1095 | } | |
1096 | ||
1097 | if (monotonic_set && boot_id_set) { | |
1098 | j->current_location.monotonic = (uint64_t) monotonic; | |
1099 | j->current_location.boot_id = boot_id; | |
1100 | j->current_location.monotonic_set = true; | |
1101 | } | |
1102 | ||
1103 | if (xor_hash_set) { | |
1104 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1105 | j->current_location.xor_hash_set = true; | |
1106 | } | |
1107 | ||
1108 | return 0; | |
1109 | } | |
1110 | ||
c6511e85 LP |
1111 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1112 | int r; | |
1113 | char *w, *state; | |
1114 | size_t l; | |
1115 | Object *o; | |
1116 | ||
1117 | if (!j) | |
1118 | return -EINVAL; | |
1119 | if (isempty(cursor)) | |
1120 | return -EINVAL; | |
1121 | ||
1122 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1123 | return -EADDRNOTAVAIL; | |
1124 | ||
1125 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1126 | if (r < 0) | |
1127 | return r; | |
1128 | ||
1129 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1130 | _cleanup_free_ char *item = NULL; | |
1131 | sd_id128_t id; | |
1132 | unsigned long long ll; | |
1133 | int k = 0; | |
1134 | ||
1135 | if (l < 2 || w[1] != '=') | |
1136 | return -EINVAL; | |
1137 | ||
1138 | item = strndup(w, l); | |
1139 | if (!item) | |
1140 | return -ENOMEM; | |
1141 | ||
1142 | switch (w[0]) { | |
1143 | ||
1144 | case 's': | |
1145 | k = sd_id128_from_string(item+2, &id); | |
1146 | if (k < 0) | |
1147 | return k; | |
1148 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1149 | return 0; | |
1150 | break; | |
1151 | ||
1152 | case 'i': | |
1153 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1154 | return -EINVAL; | |
1155 | if (ll != le64toh(o->entry.seqnum)) | |
1156 | return 0; | |
1157 | break; | |
1158 | ||
1159 | case 'b': | |
1160 | k = sd_id128_from_string(item+2, &id); | |
1161 | if (k < 0) | |
1162 | return k; | |
1163 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1164 | return 0; | |
1165 | break; | |
1166 | ||
1167 | case 'm': | |
1168 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1169 | return -EINVAL; | |
1170 | if (ll != le64toh(o->entry.monotonic)) | |
1171 | return 0; | |
1172 | break; | |
1173 | ||
1174 | case 't': | |
1175 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1176 | return -EINVAL; | |
1177 | if (ll != le64toh(o->entry.realtime)) | |
1178 | return 0; | |
1179 | break; | |
1180 | ||
1181 | case 'x': | |
1182 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1183 | return -EINVAL; | |
1184 | if (ll != le64toh(o->entry.xor_hash)) | |
1185 | return 0; | |
1186 | break; | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | return 1; | |
1191 | } | |
1192 | ||
1193 | ||
a5344d2c LP |
1194 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1195 | if (!j) | |
1196 | return -EINVAL; | |
de190aef LP |
1197 | |
1198 | reset_location(j); | |
a87247dd | 1199 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1200 | j->current_location.boot_id = boot_id; |
1201 | j->current_location.monotonic = usec; | |
1202 | j->current_location.monotonic_set = true; | |
1203 | ||
1204 | return 0; | |
1205 | } | |
1206 | ||
a5344d2c LP |
1207 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1208 | if (!j) | |
1209 | return -EINVAL; | |
de190aef LP |
1210 | |
1211 | reset_location(j); | |
a87247dd | 1212 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1213 | j->current_location.realtime = usec; |
1214 | j->current_location.realtime_set = true; | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
a5344d2c LP |
1219 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1220 | if (!j) | |
1221 | return -EINVAL; | |
de190aef LP |
1222 | |
1223 | reset_location(j); | |
1224 | j->current_location.type = LOCATION_HEAD; | |
1225 | ||
1226 | return 0; | |
1227 | } | |
1228 | ||
a5344d2c LP |
1229 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1230 | if (!j) | |
1231 | return -EINVAL; | |
de190aef LP |
1232 | |
1233 | reset_location(j); | |
1234 | j->current_location.type = LOCATION_TAIL; | |
1235 | ||
1236 | return 0; | |
87d2c1ff LP |
1237 | } |
1238 | ||
85210bff LP |
1239 | static void check_network(sd_journal *j, int fd) { |
1240 | struct statfs sfs; | |
1241 | ||
1242 | assert(j); | |
1243 | ||
1244 | if (j->on_network) | |
1245 | return; | |
1246 | ||
1247 | if (fstatfs(fd, &sfs) < 0) | |
1248 | return; | |
1249 | ||
1250 | j->on_network = | |
c4073a27 HH |
1251 | (unsigned __SWORD_TYPE) sfs.f_type == CIFS_MAGIC_NUMBER || |
1252 | (unsigned __SWORD_TYPE) sfs.f_type == CODA_SUPER_MAGIC || | |
1253 | (unsigned __SWORD_TYPE) sfs.f_type == NCP_SUPER_MAGIC || | |
1254 | (unsigned __SWORD_TYPE) sfs.f_type == NFS_SUPER_MAGIC || | |
1255 | (unsigned __SWORD_TYPE) sfs.f_type == SMB_SUPER_MAGIC; | |
85210bff LP |
1256 | } |
1257 | ||
a963990f | 1258 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
a50d7d43 | 1259 | char _cleanup_free_ *path = NULL; |
3fbf9cbb LP |
1260 | int r; |
1261 | JournalFile *f; | |
1262 | ||
1263 | assert(j); | |
1264 | assert(prefix); | |
1265 | assert(filename); | |
1266 | ||
cf244689 | 1267 | if ((j->flags & SD_JOURNAL_SYSTEM_ONLY) && |
38a6db16 | 1268 | !(streq(filename, "system.journal") || |
de2c3907 LP |
1269 | streq(filename, "system.journal~") || |
1270 | (startswith(filename, "system@") && | |
1271 | (endswith(filename, ".journal") || endswith(filename, ".journal~"))))) | |
cf244689 LP |
1272 | return 0; |
1273 | ||
b7def684 | 1274 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1275 | if (!path) |
3fbf9cbb LP |
1276 | return -ENOMEM; |
1277 | ||
a50d7d43 | 1278 | if (hashmap_get(j->files, path)) |
50f20cfd | 1279 | return 0; |
50f20cfd LP |
1280 | |
1281 | if (hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
a963990f | 1282 | log_debug("Too many open journal files, not adding %s, ignoring.", path); |
3ac251b8 | 1283 | return set_put_error(j, -ETOOMANYREFS); |
50f20cfd LP |
1284 | } |
1285 | ||
16e9f408 | 1286 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
3fbf9cbb LP |
1287 | if (r < 0) { |
1288 | if (errno == ENOENT) | |
1289 | return 0; | |
1290 | ||
1291 | return r; | |
1292 | } | |
1293 | ||
72f59706 | 1294 | /* journal_file_dump(f); */ |
de190aef | 1295 | |
3fbf9cbb LP |
1296 | r = hashmap_put(j->files, f->path, f); |
1297 | if (r < 0) { | |
1298 | journal_file_close(f); | |
1299 | return r; | |
1300 | } | |
1301 | ||
a50d7d43 ZJS |
1302 | log_debug("File %s got added.", f->path); |
1303 | ||
85210bff LP |
1304 | check_network(j, f->fd); |
1305 | ||
a963990f LP |
1306 | j->current_invalidate_counter ++; |
1307 | ||
50f20cfd LP |
1308 | return 0; |
1309 | } | |
1310 | ||
a963990f LP |
1311 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1312 | char *path; | |
50f20cfd LP |
1313 | JournalFile *f; |
1314 | ||
1315 | assert(j); | |
1316 | assert(prefix); | |
1317 | assert(filename); | |
1318 | ||
b7def684 | 1319 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1320 | if (!path) |
50f20cfd LP |
1321 | return -ENOMEM; |
1322 | ||
a963990f LP |
1323 | f = hashmap_get(j->files, path); |
1324 | free(path); | |
50f20cfd LP |
1325 | if (!f) |
1326 | return 0; | |
1327 | ||
1328 | hashmap_remove(j->files, f->path); | |
44a5fa34 LP |
1329 | |
1330 | log_debug("File %s got removed.", f->path); | |
1331 | ||
3c1668da LP |
1332 | if (j->current_file == f) { |
1333 | j->current_file = NULL; | |
1334 | j->current_field = 0; | |
1335 | } | |
1336 | ||
1337 | if (j->unique_file == f) { | |
1338 | j->unique_file = NULL; | |
1339 | j->unique_offset = 0; | |
1340 | } | |
1341 | ||
50f20cfd LP |
1342 | journal_file_close(f); |
1343 | ||
a963990f LP |
1344 | j->current_invalidate_counter ++; |
1345 | ||
3fbf9cbb LP |
1346 | return 0; |
1347 | } | |
1348 | ||
a963990f | 1349 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
a50d7d43 | 1350 | char _cleanup_free_ *path = NULL; |
3fbf9cbb | 1351 | int r; |
a50d7d43 | 1352 | DIR _cleanup_closedir_ *d = NULL; |
cf244689 | 1353 | sd_id128_t id, mid; |
a963990f | 1354 | Directory *m; |
3fbf9cbb LP |
1355 | |
1356 | assert(j); | |
1357 | assert(prefix); | |
a963990f | 1358 | assert(dirname); |
3fbf9cbb | 1359 | |
d95b1fb3 ZJS |
1360 | log_debug("Considering %s/%s.", prefix, dirname); |
1361 | ||
cf244689 | 1362 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1363 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1364 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1365 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1366 | return 0; |
1367 | ||
b7def684 | 1368 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1369 | if (!path) |
3fbf9cbb LP |
1370 | return -ENOMEM; |
1371 | ||
a963990f | 1372 | d = opendir(path); |
3fbf9cbb | 1373 | if (!d) { |
a963990f | 1374 | log_debug("Failed to open %s: %m", path); |
3fbf9cbb LP |
1375 | if (errno == ENOENT) |
1376 | return 0; | |
3fbf9cbb LP |
1377 | return -errno; |
1378 | } | |
1379 | ||
a963990f LP |
1380 | m = hashmap_get(j->directories_by_path, path); |
1381 | if (!m) { | |
1382 | m = new0(Directory, 1); | |
a50d7d43 | 1383 | if (!m) |
a963990f | 1384 | return -ENOMEM; |
a963990f LP |
1385 | |
1386 | m->is_root = false; | |
1387 | m->path = path; | |
1388 | ||
1389 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1390 | free(m); |
1391 | return -ENOMEM; | |
1392 | } | |
1393 | ||
a50d7d43 | 1394 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1395 | j->current_invalidate_counter ++; |
1396 | ||
1397 | log_debug("Directory %s got added.", m->path); | |
1398 | ||
a50d7d43 | 1399 | } else if (m->is_root) |
a963990f | 1400 | return 0; |
a963990f LP |
1401 | |
1402 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1403 | ||
1404 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1405 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1406 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1407 | IN_ONLYDIR); |
a963990f LP |
1408 | |
1409 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1410 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1411 | } | |
1412 | ||
1413 | for (;;) { | |
7d5e9c0f LP |
1414 | struct dirent *de; |
1415 | union dirent_storage buf; | |
a963990f | 1416 | |
7d5e9c0f | 1417 | r = readdir_r(d, &buf.de, &de); |
a963990f LP |
1418 | if (r != 0 || !de) |
1419 | break; | |
1420 | ||
de2c3907 LP |
1421 | if (dirent_is_file_with_suffix(de, ".journal") || |
1422 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1423 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1424 | if (r < 0) { |
1425 | log_debug("Failed to add file %s/%s: %s", | |
1426 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1427 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1428 | if (r < 0) |
1429 | return r; | |
1430 | } | |
a963990f LP |
1431 | } |
1432 | } | |
1433 | ||
85210bff LP |
1434 | check_network(j, dirfd(d)); |
1435 | ||
a963990f LP |
1436 | return 0; |
1437 | } | |
1438 | ||
1439 | static int add_root_directory(sd_journal *j, const char *p) { | |
a50d7d43 | 1440 | DIR _cleanup_closedir_ *d = NULL; |
a963990f LP |
1441 | Directory *m; |
1442 | int r; | |
1443 | ||
1444 | assert(j); | |
1445 | assert(p); | |
1446 | ||
1447 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1448 | !path_startswith(p, "/run")) | |
1449 | return -EINVAL; | |
1450 | ||
1451 | d = opendir(p); | |
1452 | if (!d) | |
1453 | return -errno; | |
1454 | ||
1455 | m = hashmap_get(j->directories_by_path, p); | |
1456 | if (!m) { | |
1457 | m = new0(Directory, 1); | |
a50d7d43 | 1458 | if (!m) |
a963990f | 1459 | return -ENOMEM; |
a963990f LP |
1460 | |
1461 | m->is_root = true; | |
1462 | m->path = strdup(p); | |
1463 | if (!m->path) { | |
a963990f LP |
1464 | free(m); |
1465 | return -ENOMEM; | |
1466 | } | |
1467 | ||
1468 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1469 | free(m->path); |
1470 | free(m); | |
1471 | return -ENOMEM; | |
1472 | } | |
1473 | ||
1474 | j->current_invalidate_counter ++; | |
1475 | ||
1476 | log_debug("Root directory %s got added.", m->path); | |
1477 | ||
a50d7d43 | 1478 | } else if (!m->is_root) |
a963990f | 1479 | return 0; |
50f20cfd | 1480 | |
a963990f LP |
1481 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1482 | ||
1483 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1484 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1485 | IN_ONLYDIR); |
a963990f LP |
1486 | |
1487 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1488 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1489 | } | |
50f20cfd | 1490 | |
3fbf9cbb | 1491 | for (;;) { |
7d5e9c0f LP |
1492 | struct dirent *de; |
1493 | union dirent_storage buf; | |
a963990f | 1494 | sd_id128_t id; |
3fbf9cbb | 1495 | |
7d5e9c0f | 1496 | r = readdir_r(d, &buf.de, &de); |
3fbf9cbb LP |
1497 | if (r != 0 || !de) |
1498 | break; | |
1499 | ||
de2c3907 LP |
1500 | if (dirent_is_file_with_suffix(de, ".journal") || |
1501 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1502 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1503 | if (r < 0) { |
1504 | log_debug("Failed to add file %s/%s: %s", | |
1505 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1506 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1507 | if (r < 0) |
1508 | return r; | |
1509 | } | |
6f5878a2 | 1510 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1511 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1512 | ||
1513 | r = add_directory(j, m->path, de->d_name); | |
1514 | if (r < 0) | |
1515 | log_debug("Failed to add directory %s/%s: %s", m->path, de->d_name, strerror(-r)); | |
1516 | } | |
3fbf9cbb LP |
1517 | } |
1518 | ||
85210bff LP |
1519 | check_network(j, dirfd(d)); |
1520 | ||
a963990f LP |
1521 | return 0; |
1522 | } | |
1523 | ||
1524 | static int remove_directory(sd_journal *j, Directory *d) { | |
1525 | assert(j); | |
1526 | ||
1527 | if (d->wd > 0) { | |
1528 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1529 | ||
1530 | if (j->inotify_fd >= 0) | |
1531 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1532 | } | |
1533 | ||
1534 | hashmap_remove(j->directories_by_path, d->path); | |
1535 | ||
1536 | if (d->is_root) | |
1537 | log_debug("Root directory %s got removed.", d->path); | |
1538 | else | |
1539 | log_debug("Directory %s got removed.", d->path); | |
1540 | ||
1541 | free(d->path); | |
1542 | free(d); | |
50f20cfd | 1543 | |
3fbf9cbb LP |
1544 | return 0; |
1545 | } | |
1546 | ||
a963990f | 1547 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1548 | int r; |
a963990f LP |
1549 | const char search_paths[] = |
1550 | "/run/log/journal\0" | |
1551 | "/var/log/journal\0"; | |
1552 | const char *p; | |
50f20cfd LP |
1553 | |
1554 | assert(j); | |
50f20cfd | 1555 | |
a963990f LP |
1556 | /* We ignore most errors here, since the idea is to only open |
1557 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1558 | |
6fe391c5 ZJS |
1559 | NULSTR_FOREACH(p, search_paths) { |
1560 | r = add_root_directory(j, p); | |
3ac251b8 LP |
1561 | if (r < 0 && r != -ENOENT) { |
1562 | r = set_put_error(j, r); | |
1563 | if (r < 0) | |
1564 | return r; | |
1565 | } | |
6fe391c5 | 1566 | } |
50f20cfd | 1567 | |
a963990f | 1568 | return 0; |
50f20cfd LP |
1569 | } |
1570 | ||
a963990f | 1571 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1572 | assert(j); |
50f20cfd | 1573 | |
a963990f LP |
1574 | if (j->inotify_fd < 0) { |
1575 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1576 | if (j->inotify_fd < 0) | |
1577 | return -errno; | |
1578 | } | |
50f20cfd | 1579 | |
a963990f LP |
1580 | if (!j->directories_by_wd) { |
1581 | j->directories_by_wd = hashmap_new(trivial_hash_func, trivial_compare_func); | |
1582 | if (!j->directories_by_wd) | |
1583 | return -ENOMEM; | |
50f20cfd | 1584 | } |
a963990f LP |
1585 | |
1586 | return 0; | |
50f20cfd LP |
1587 | } |
1588 | ||
7827b1a1 | 1589 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1590 | sd_journal *j; |
50f20cfd | 1591 | |
a963990f LP |
1592 | j = new0(sd_journal, 1); |
1593 | if (!j) | |
1594 | return NULL; | |
50f20cfd | 1595 | |
a963990f LP |
1596 | j->inotify_fd = -1; |
1597 | j->flags = flags; | |
93b73b06 | 1598 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1599 | |
7827b1a1 LP |
1600 | if (path) { |
1601 | j->path = strdup(path); | |
6180fc61 ZJS |
1602 | if (!j->path) |
1603 | goto fail; | |
7827b1a1 LP |
1604 | } |
1605 | ||
a963990f | 1606 | j->files = hashmap_new(string_hash_func, string_compare_func); |
a963990f | 1607 | j->directories_by_path = hashmap_new(string_hash_func, string_compare_func); |
84168d80 | 1608 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1609 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1610 | goto fail; |
16e9f408 | 1611 | |
a963990f | 1612 | return j; |
6180fc61 ZJS |
1613 | |
1614 | fail: | |
1615 | sd_journal_close(j); | |
1616 | return NULL; | |
50f20cfd LP |
1617 | } |
1618 | ||
a5344d2c | 1619 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1620 | sd_journal *j; |
3fbf9cbb | 1621 | int r; |
87d2c1ff | 1622 | |
a5344d2c LP |
1623 | if (!ret) |
1624 | return -EINVAL; | |
1625 | ||
1626 | if (flags & ~(SD_JOURNAL_LOCAL_ONLY| | |
1627 | SD_JOURNAL_RUNTIME_ONLY| | |
1628 | SD_JOURNAL_SYSTEM_ONLY)) | |
1629 | return -EINVAL; | |
87d2c1ff | 1630 | |
7827b1a1 | 1631 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1632 | if (!j) |
1633 | return -ENOMEM; | |
1634 | ||
a963990f LP |
1635 | r = add_search_paths(j); |
1636 | if (r < 0) | |
50f20cfd | 1637 | goto fail; |
50f20cfd | 1638 | |
a963990f LP |
1639 | *ret = j; |
1640 | return 0; | |
cf244689 | 1641 | |
a963990f LP |
1642 | fail: |
1643 | sd_journal_close(j); | |
87d2c1ff | 1644 | |
a963990f LP |
1645 | return r; |
1646 | } | |
50f20cfd | 1647 | |
a963990f LP |
1648 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1649 | sd_journal *j; | |
1650 | int r; | |
87d2c1ff | 1651 | |
a963990f LP |
1652 | if (!ret) |
1653 | return -EINVAL; | |
87d2c1ff | 1654 | |
8cb17a6d | 1655 | if (!path) |
a963990f | 1656 | return -EINVAL; |
87d2c1ff | 1657 | |
a963990f LP |
1658 | if (flags != 0) |
1659 | return -EINVAL; | |
87d2c1ff | 1660 | |
7827b1a1 | 1661 | j = journal_new(flags, path); |
a963990f LP |
1662 | if (!j) |
1663 | return -ENOMEM; | |
3fbf9cbb | 1664 | |
a963990f | 1665 | r = add_root_directory(j, path); |
6fe391c5 | 1666 | if (r < 0) { |
3ac251b8 | 1667 | set_put_error(j, r); |
a963990f | 1668 | goto fail; |
6fe391c5 | 1669 | } |
87d2c1ff LP |
1670 | |
1671 | *ret = j; | |
1672 | return 0; | |
1673 | ||
1674 | fail: | |
1675 | sd_journal_close(j); | |
1676 | ||
1677 | return r; | |
a963990f | 1678 | } |
87d2c1ff | 1679 | |
a5344d2c | 1680 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1681 | Directory *d; |
1682 | JournalFile *f; | |
1683 | ||
a5344d2c LP |
1684 | if (!j) |
1685 | return; | |
87d2c1ff | 1686 | |
54b1da83 LP |
1687 | sd_journal_flush_matches(j); |
1688 | ||
a963990f LP |
1689 | while ((f = hashmap_steal_first(j->files))) |
1690 | journal_file_close(f); | |
50f20cfd | 1691 | |
a963990f | 1692 | hashmap_free(j->files); |
260a2be4 | 1693 | |
a963990f LP |
1694 | while ((d = hashmap_first(j->directories_by_path))) |
1695 | remove_directory(j, d); | |
260a2be4 | 1696 | |
a963990f LP |
1697 | while ((d = hashmap_first(j->directories_by_wd))) |
1698 | remove_directory(j, d); | |
87d2c1ff | 1699 | |
a963990f LP |
1700 | hashmap_free(j->directories_by_path); |
1701 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1702 | |
50f20cfd LP |
1703 | if (j->inotify_fd >= 0) |
1704 | close_nointr_nofail(j->inotify_fd); | |
1705 | ||
16e9f408 LP |
1706 | if (j->mmap) |
1707 | mmap_cache_unref(j->mmap); | |
1708 | ||
7827b1a1 | 1709 | free(j->path); |
3c1668da | 1710 | free(j->unique_field); |
6fe391c5 | 1711 | set_free(j->errors); |
87d2c1ff LP |
1712 | free(j); |
1713 | } | |
3fbf9cbb | 1714 | |
a5344d2c | 1715 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1716 | Object *o; |
1717 | JournalFile *f; | |
1718 | int r; | |
1719 | ||
a5344d2c LP |
1720 | if (!j) |
1721 | return -EINVAL; | |
1722 | if (!ret) | |
1723 | return -EINVAL; | |
3fbf9cbb LP |
1724 | |
1725 | f = j->current_file; | |
1726 | if (!f) | |
de190aef | 1727 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1728 | |
1729 | if (f->current_offset <= 0) | |
de190aef | 1730 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1731 | |
de190aef | 1732 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1733 | if (r < 0) |
1734 | return r; | |
1735 | ||
1736 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1737 | return 0; |
3fbf9cbb LP |
1738 | } |
1739 | ||
a5344d2c | 1740 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1741 | Object *o; |
1742 | JournalFile *f; | |
1743 | int r; | |
1744 | sd_id128_t id; | |
1745 | ||
a5344d2c LP |
1746 | if (!j) |
1747 | return -EINVAL; | |
3fbf9cbb LP |
1748 | |
1749 | f = j->current_file; | |
1750 | if (!f) | |
de190aef | 1751 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1752 | |
1753 | if (f->current_offset <= 0) | |
de190aef | 1754 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1755 | |
de190aef | 1756 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1757 | if (r < 0) |
1758 | return r; | |
1759 | ||
de190aef LP |
1760 | if (ret_boot_id) |
1761 | *ret_boot_id = o->entry.boot_id; | |
1762 | else { | |
1763 | r = sd_id128_get_boot(&id); | |
1764 | if (r < 0) | |
1765 | return r; | |
3fbf9cbb | 1766 | |
de190aef | 1767 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1768 | return -ESTALE; |
de190aef | 1769 | } |
3fbf9cbb | 1770 | |
14a65d65 LP |
1771 | if (ret) |
1772 | *ret = le64toh(o->entry.monotonic); | |
1773 | ||
de190aef | 1774 | return 0; |
3fbf9cbb LP |
1775 | } |
1776 | ||
362a3f81 LP |
1777 | static bool field_is_valid(const char *field) { |
1778 | const char *p; | |
1779 | ||
1780 | assert(field); | |
1781 | ||
1782 | if (isempty(field)) | |
1783 | return false; | |
1784 | ||
1785 | if (startswith(field, "__")) | |
1786 | return false; | |
1787 | ||
1788 | for (p = field; *p; p++) { | |
1789 | ||
1790 | if (*p == '_') | |
1791 | continue; | |
1792 | ||
1793 | if (*p >= 'A' && *p <= 'Z') | |
1794 | continue; | |
1795 | ||
1796 | if (*p >= '0' && *p <= '9') | |
1797 | continue; | |
1798 | ||
1799 | return false; | |
1800 | } | |
1801 | ||
1802 | return true; | |
1803 | } | |
1804 | ||
a5344d2c | 1805 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1806 | JournalFile *f; |
1807 | uint64_t i, n; | |
1808 | size_t field_length; | |
1809 | int r; | |
1810 | Object *o; | |
1811 | ||
a5344d2c LP |
1812 | if (!j) |
1813 | return -EINVAL; | |
1814 | if (!field) | |
1815 | return -EINVAL; | |
1816 | if (!data) | |
1817 | return -EINVAL; | |
1818 | if (!size) | |
1819 | return -EINVAL; | |
3fbf9cbb | 1820 | |
362a3f81 | 1821 | if (!field_is_valid(field)) |
3fbf9cbb LP |
1822 | return -EINVAL; |
1823 | ||
1824 | f = j->current_file; | |
1825 | if (!f) | |
de190aef | 1826 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1827 | |
1828 | if (f->current_offset <= 0) | |
de190aef | 1829 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1830 | |
de190aef | 1831 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1832 | if (r < 0) |
1833 | return r; | |
1834 | ||
1835 | field_length = strlen(field); | |
1836 | ||
1837 | n = journal_file_entry_n_items(o); | |
1838 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1839 | uint64_t p, l; |
1840 | le64_t le_hash; | |
3fbf9cbb LP |
1841 | size_t t; |
1842 | ||
1843 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1844 | le_hash = o->entry.items[i].hash; |
de190aef | 1845 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1846 | if (r < 0) |
1847 | return r; | |
1848 | ||
de190aef | 1849 | if (le_hash != o->data.hash) |
de7b95cd LP |
1850 | return -EBADMSG; |
1851 | ||
3fbf9cbb LP |
1852 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1853 | ||
807e17f0 LP |
1854 | if (o->object.flags & OBJECT_COMPRESSED) { |
1855 | ||
1856 | #ifdef HAVE_XZ | |
1857 | if (uncompress_startswith(o->data.payload, l, | |
1858 | &f->compress_buffer, &f->compress_buffer_size, | |
1859 | field, field_length, '=')) { | |
1860 | ||
1861 | uint64_t rsize; | |
1862 | ||
1863 | if (!uncompress_blob(o->data.payload, l, | |
93b73b06 LP |
1864 | &f->compress_buffer, &f->compress_buffer_size, &rsize, |
1865 | j->data_threshold)) | |
807e17f0 LP |
1866 | return -EBADMSG; |
1867 | ||
1868 | *data = f->compress_buffer; | |
1869 | *size = (size_t) rsize; | |
1870 | ||
1871 | return 0; | |
1872 | } | |
1873 | #else | |
1874 | return -EPROTONOSUPPORT; | |
1875 | #endif | |
1876 | ||
1877 | } else if (l >= field_length+1 && | |
1878 | memcmp(o->data.payload, field, field_length) == 0 && | |
1879 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1880 | |
161e54f8 | 1881 | t = (size_t) l; |
3fbf9cbb | 1882 | |
161e54f8 LP |
1883 | if ((uint64_t) t != l) |
1884 | return -E2BIG; | |
3fbf9cbb | 1885 | |
161e54f8 LP |
1886 | *data = o->data.payload; |
1887 | *size = t; | |
3fbf9cbb | 1888 | |
99613ec5 | 1889 | return 0; |
161e54f8 | 1890 | } |
3fbf9cbb | 1891 | |
de190aef | 1892 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1893 | if (r < 0) |
1894 | return r; | |
3fbf9cbb LP |
1895 | } |
1896 | ||
de190aef | 1897 | return -ENOENT; |
3fbf9cbb LP |
1898 | } |
1899 | ||
93b73b06 | 1900 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
1901 | size_t t; |
1902 | uint64_t l; | |
1903 | ||
1904 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
1905 | t = (size_t) l; | |
1906 | ||
1907 | /* We can't read objects larger than 4G on a 32bit machine */ | |
1908 | if ((uint64_t) t != l) | |
1909 | return -E2BIG; | |
1910 | ||
1911 | if (o->object.flags & OBJECT_COMPRESSED) { | |
1912 | #ifdef HAVE_XZ | |
1913 | uint64_t rsize; | |
1914 | ||
93b73b06 | 1915 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, j->data_threshold)) |
3c1668da LP |
1916 | return -EBADMSG; |
1917 | ||
1918 | *data = f->compress_buffer; | |
1919 | *size = (size_t) rsize; | |
1920 | #else | |
1921 | return -EPROTONOSUPPORT; | |
1922 | #endif | |
1923 | } else { | |
1924 | *data = o->data.payload; | |
1925 | *size = t; | |
1926 | } | |
1927 | ||
1928 | return 0; | |
1929 | } | |
1930 | ||
a5344d2c | 1931 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 1932 | JournalFile *f; |
3c1668da | 1933 | uint64_t p, n; |
4fd052ae | 1934 | le64_t le_hash; |
3fbf9cbb LP |
1935 | int r; |
1936 | Object *o; | |
1937 | ||
a5344d2c LP |
1938 | if (!j) |
1939 | return -EINVAL; | |
1940 | if (!data) | |
1941 | return -EINVAL; | |
1942 | if (!size) | |
1943 | return -EINVAL; | |
3fbf9cbb LP |
1944 | |
1945 | f = j->current_file; | |
1946 | if (!f) | |
de190aef | 1947 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1948 | |
1949 | if (f->current_offset <= 0) | |
de190aef | 1950 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1951 | |
de190aef | 1952 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1953 | if (r < 0) |
1954 | return r; | |
1955 | ||
1956 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 1957 | if (j->current_field >= n) |
3fbf9cbb LP |
1958 | return 0; |
1959 | ||
7210bfb3 | 1960 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
1961 | le_hash = o->entry.items[j->current_field].hash; |
1962 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
1963 | if (r < 0) |
1964 | return r; | |
1965 | ||
de190aef | 1966 | if (le_hash != o->data.hash) |
de7b95cd LP |
1967 | return -EBADMSG; |
1968 | ||
93b73b06 | 1969 | r = return_data(j, f, o, data, size); |
3c1668da LP |
1970 | if (r < 0) |
1971 | return r; | |
3fbf9cbb | 1972 | |
7210bfb3 | 1973 | j->current_field ++; |
3fbf9cbb LP |
1974 | |
1975 | return 1; | |
1976 | } | |
c2373f84 | 1977 | |
a5344d2c LP |
1978 | _public_ void sd_journal_restart_data(sd_journal *j) { |
1979 | if (!j) | |
1980 | return; | |
8725d60a LP |
1981 | |
1982 | j->current_field = 0; | |
c2373f84 | 1983 | } |
50f20cfd | 1984 | |
a5344d2c | 1985 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
1986 | int r; |
1987 | ||
a5344d2c LP |
1988 | if (!j) |
1989 | return -EINVAL; | |
50f20cfd | 1990 | |
a963990f LP |
1991 | if (j->inotify_fd >= 0) |
1992 | return j->inotify_fd; | |
1993 | ||
1994 | r = allocate_inotify(j); | |
1995 | if (r < 0) | |
1996 | return r; | |
1997 | ||
1998 | /* Iterate through all dirs again, to add them to the | |
1999 | * inotify */ | |
7827b1a1 LP |
2000 | if (j->path) |
2001 | r = add_root_directory(j, j->path); | |
2002 | else | |
2003 | r = add_search_paths(j); | |
a963990f LP |
2004 | if (r < 0) |
2005 | return r; | |
2006 | ||
50f20cfd LP |
2007 | return j->inotify_fd; |
2008 | } | |
2009 | ||
ee531d94 LP |
2010 | _public_ int sd_journal_get_events(sd_journal *j) { |
2011 | int fd; | |
2012 | ||
2013 | if (!j) | |
2014 | return -EINVAL; | |
2015 | ||
2016 | fd = sd_journal_get_fd(j); | |
2017 | if (fd < 0) | |
2018 | return fd; | |
2019 | ||
2020 | return POLLIN; | |
2021 | } | |
2022 | ||
39c155ea LP |
2023 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2024 | int fd; | |
2025 | ||
2026 | if (!j) | |
2027 | return -EINVAL; | |
2028 | if (!timeout_usec) | |
2029 | return -EINVAL; | |
2030 | ||
2031 | fd = sd_journal_get_fd(j); | |
2032 | if (fd < 0) | |
2033 | return fd; | |
2034 | ||
2035 | if (!j->on_network) { | |
2036 | *timeout_usec = (uint64_t) -1; | |
2037 | return 0; | |
2038 | } | |
2039 | ||
2040 | /* If we are on the network we need to regularly check for | |
2041 | * changes manually */ | |
2042 | ||
2043 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2044 | return 1; | |
2045 | } | |
2046 | ||
50f20cfd | 2047 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2048 | Directory *d; |
50f20cfd LP |
2049 | int r; |
2050 | ||
2051 | assert(j); | |
2052 | assert(e); | |
2053 | ||
2054 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2055 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2056 | if (d) { | |
2057 | sd_id128_t id; | |
50f20cfd | 2058 | |
de2c3907 LP |
2059 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2060 | (endswith(e->name, ".journal") || | |
2061 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2062 | |
2063 | /* Event for a journal file */ | |
2064 | ||
2065 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2066 | r = add_file(j, d->path, e->name); |
6fe391c5 ZJS |
2067 | if (r < 0) { |
2068 | log_debug("Failed to add file %s/%s: %s", | |
2069 | d->path, e->name, strerror(-r)); | |
3ac251b8 | 2070 | set_put_error(j, r); |
6fe391c5 | 2071 | } |
a963990f | 2072 | |
5e6870ea | 2073 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2074 | |
a963990f | 2075 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2076 | if (r < 0) |
a963990f | 2077 | log_debug("Failed to remove file %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2078 | } |
2079 | ||
a963990f | 2080 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2081 | |
a963990f | 2082 | /* Event for a subdirectory */ |
50f20cfd | 2083 | |
a963990f LP |
2084 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2085 | r = remove_directory(j, d); | |
50f20cfd | 2086 | if (r < 0) |
a963990f | 2087 | log_debug("Failed to remove directory %s: %s", d->path, strerror(-r)); |
50f20cfd LP |
2088 | } |
2089 | ||
50f20cfd | 2090 | |
a963990f | 2091 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2092 | |
a963990f | 2093 | /* Event for root directory */ |
50f20cfd | 2094 | |
a963990f LP |
2095 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2096 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2097 | if (r < 0) |
a963990f | 2098 | log_debug("Failed to add directory %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2099 | } |
2100 | } | |
2101 | ||
2102 | return; | |
2103 | } | |
2104 | ||
2105 | if (e->mask & IN_IGNORED) | |
2106 | return; | |
2107 | ||
2108 | log_warning("Unknown inotify event."); | |
2109 | } | |
2110 | ||
a963990f LP |
2111 | static int determine_change(sd_journal *j) { |
2112 | bool b; | |
2113 | ||
2114 | assert(j); | |
2115 | ||
2116 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2117 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2118 | ||
2119 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2120 | } | |
2121 | ||
a5344d2c | 2122 | _public_ int sd_journal_process(sd_journal *j) { |
19d1e4ee | 2123 | uint8_t buffer[sizeof(struct inotify_event) + FILENAME_MAX] _alignas_(struct inotify_event); |
a963990f | 2124 | bool got_something = false; |
50f20cfd | 2125 | |
a5344d2c LP |
2126 | if (!j) |
2127 | return -EINVAL; | |
50f20cfd | 2128 | |
39c155ea LP |
2129 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2130 | ||
50f20cfd LP |
2131 | for (;;) { |
2132 | struct inotify_event *e; | |
2133 | ssize_t l; | |
2134 | ||
2135 | l = read(j->inotify_fd, buffer, sizeof(buffer)); | |
2136 | if (l < 0) { | |
a963990f LP |
2137 | if (errno == EAGAIN || errno == EINTR) |
2138 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2139 | |
2140 | return -errno; | |
2141 | } | |
2142 | ||
a963990f LP |
2143 | got_something = true; |
2144 | ||
50f20cfd LP |
2145 | e = (struct inotify_event*) buffer; |
2146 | while (l > 0) { | |
2147 | size_t step; | |
2148 | ||
2149 | process_inotify_event(j, e); | |
2150 | ||
2151 | step = sizeof(struct inotify_event) + e->len; | |
2152 | assert(step <= (size_t) l); | |
2153 | ||
2154 | e = (struct inotify_event*) ((uint8_t*) e + step); | |
2155 | l -= step; | |
2156 | } | |
2157 | } | |
a963990f LP |
2158 | |
2159 | return determine_change(j); | |
50f20cfd | 2160 | } |
6ad1d1c3 | 2161 | |
e02d1cf7 | 2162 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2163 | int r; |
39c155ea | 2164 | uint64_t t; |
e02d1cf7 LP |
2165 | |
2166 | assert(j); | |
2167 | ||
a963990f LP |
2168 | if (j->inotify_fd < 0) { |
2169 | ||
2170 | /* This is the first invocation, hence create the | |
2171 | * inotify watch */ | |
2172 | r = sd_journal_get_fd(j); | |
2173 | if (r < 0) | |
2174 | return r; | |
2175 | ||
2176 | /* The journal might have changed since the context | |
2177 | * object was created and we weren't watching before, | |
2178 | * hence don't wait for anything, and return | |
2179 | * immediately. */ | |
2180 | return determine_change(j); | |
2181 | } | |
2182 | ||
39c155ea LP |
2183 | r = sd_journal_get_timeout(j, &t); |
2184 | if (r < 0) | |
2185 | return r; | |
2186 | ||
2187 | if (t != (uint64_t) -1) { | |
2188 | usec_t n; | |
2189 | ||
2190 | n = now(CLOCK_MONOTONIC); | |
2191 | t = t > n ? t - n : 0; | |
85210bff | 2192 | |
39c155ea LP |
2193 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2194 | timeout_usec = t; | |
85210bff LP |
2195 | } |
2196 | ||
a963990f LP |
2197 | do { |
2198 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2199 | } while (r == -EINTR); | |
e02d1cf7 LP |
2200 | |
2201 | if (r < 0) | |
2202 | return r; | |
2203 | ||
a963990f | 2204 | return sd_journal_process(j); |
e02d1cf7 LP |
2205 | } |
2206 | ||
08984293 LP |
2207 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2208 | Iterator i; | |
2209 | JournalFile *f; | |
2210 | bool first = true; | |
2211 | int r; | |
2212 | ||
2213 | if (!j) | |
2214 | return -EINVAL; | |
2215 | if (!from && !to) | |
2216 | return -EINVAL; | |
2217 | ||
2218 | HASHMAP_FOREACH(f, j->files, i) { | |
2219 | usec_t fr, t; | |
2220 | ||
2221 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2222 | if (r == -ENOENT) |
2223 | continue; | |
08984293 LP |
2224 | if (r < 0) |
2225 | return r; | |
2226 | if (r == 0) | |
2227 | continue; | |
2228 | ||
2229 | if (first) { | |
2230 | if (from) | |
2231 | *from = fr; | |
2232 | if (to) | |
2233 | *to = t; | |
2234 | first = false; | |
2235 | } else { | |
2236 | if (from) | |
2237 | *from = MIN(fr, *from); | |
2238 | if (to) | |
0f91dd87 | 2239 | *to = MAX(t, *to); |
08984293 LP |
2240 | } |
2241 | } | |
2242 | ||
2243 | return first ? 0 : 1; | |
2244 | } | |
2245 | ||
2246 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2247 | Iterator i; | |
2248 | JournalFile *f; | |
2249 | bool first = true; | |
2250 | int r; | |
2251 | ||
2252 | if (!j) | |
2253 | return -EINVAL; | |
2254 | if (!from && !to) | |
2255 | return -EINVAL; | |
2256 | ||
2257 | HASHMAP_FOREACH(f, j->files, i) { | |
2258 | usec_t fr, t; | |
2259 | ||
2260 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2261 | if (r == -ENOENT) |
2262 | continue; | |
08984293 LP |
2263 | if (r < 0) |
2264 | return r; | |
2265 | if (r == 0) | |
2266 | continue; | |
2267 | ||
2268 | if (first) { | |
2269 | if (from) | |
2270 | *from = fr; | |
2271 | if (to) | |
2272 | *to = t; | |
2273 | first = false; | |
2274 | } else { | |
2275 | if (from) | |
2276 | *from = MIN(fr, *from); | |
2277 | if (to) | |
0f91dd87 | 2278 | *to = MAX(t, *to); |
08984293 LP |
2279 | } |
2280 | } | |
2281 | ||
2282 | return first ? 0 : 1; | |
2283 | } | |
2284 | ||
dca6219e LP |
2285 | void journal_print_header(sd_journal *j) { |
2286 | Iterator i; | |
2287 | JournalFile *f; | |
2288 | bool newline = false; | |
2289 | ||
2290 | assert(j); | |
2291 | ||
2292 | HASHMAP_FOREACH(f, j->files, i) { | |
2293 | if (newline) | |
2294 | putchar('\n'); | |
2295 | else | |
2296 | newline = true; | |
2297 | ||
2298 | journal_file_print_header(f); | |
2299 | } | |
2300 | } | |
08984293 | 2301 | |
a1a03e30 LP |
2302 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2303 | Iterator i; | |
2304 | JournalFile *f; | |
2305 | uint64_t sum = 0; | |
2306 | ||
2307 | if (!j) | |
2308 | return -EINVAL; | |
2309 | if (!bytes) | |
2310 | return -EINVAL; | |
2311 | ||
2312 | HASHMAP_FOREACH(f, j->files, i) { | |
2313 | struct stat st; | |
2314 | ||
2315 | if (fstat(f->fd, &st) < 0) | |
2316 | return -errno; | |
2317 | ||
2318 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2319 | } | |
2320 | ||
2321 | *bytes = sum; | |
2322 | return 0; | |
2323 | } | |
2324 | ||
3c1668da LP |
2325 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2326 | char *f; | |
2327 | ||
2328 | if (!j) | |
2329 | return -EINVAL; | |
2330 | if (isempty(field)) | |
2331 | return -EINVAL; | |
d5c4ed62 LP |
2332 | if (!field_is_valid(field)) |
2333 | return -EINVAL; | |
3c1668da LP |
2334 | |
2335 | f = strdup(field); | |
2336 | if (!f) | |
2337 | return -ENOMEM; | |
2338 | ||
2339 | free(j->unique_field); | |
2340 | j->unique_field = f; | |
2341 | j->unique_file = NULL; | |
2342 | j->unique_offset = 0; | |
2343 | ||
2344 | return 0; | |
2345 | } | |
2346 | ||
2347 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
2348 | Object *o; | |
2349 | size_t k; | |
2350 | int r; | |
19a2bd80 | 2351 | |
3c1668da LP |
2352 | if (!j) |
2353 | return -EINVAL; | |
2354 | if (!data) | |
2355 | return -EINVAL; | |
2356 | if (!l) | |
2357 | return -EINVAL; | |
2358 | if (!j->unique_field) | |
2359 | return -EINVAL; | |
19a2bd80 | 2360 | |
3c1668da | 2361 | k = strlen(j->unique_field); |
19a2bd80 | 2362 | |
3c1668da LP |
2363 | if (!j->unique_file) { |
2364 | j->unique_file = hashmap_first(j->files); | |
2365 | if (!j->unique_file) | |
2366 | return 0; | |
2367 | j->unique_offset = 0; | |
2368 | } | |
19a2bd80 | 2369 | |
3c1668da LP |
2370 | for (;;) { |
2371 | JournalFile *of; | |
2372 | Iterator i; | |
2373 | const void *odata; | |
2374 | size_t ol; | |
2375 | bool found; | |
2376 | ||
bdc02927 | 2377 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2378 | if (j->unique_offset == 0) { |
2379 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2380 | if (r < 0) | |
2381 | return r; | |
2382 | ||
2383 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2384 | } else { | |
2385 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2386 | if (r < 0) | |
2387 | return r; | |
2388 | ||
2389 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2390 | } | |
2391 | ||
2392 | /* We reached the end of the list? Then start again, with the next file */ | |
2393 | if (j->unique_offset == 0) { | |
2394 | JournalFile *n; | |
2395 | ||
2396 | n = hashmap_next(j->files, j->unique_file->path); | |
2397 | if (!n) | |
2398 | return 0; | |
2399 | ||
2400 | j->unique_file = n; | |
2401 | continue; | |
2402 | } | |
2403 | ||
2404 | /* We do not use the type context here, but 0 instead, | |
2405 | * so that we can look at this data object at the same | |
2406 | * time as one on another file */ | |
2407 | r = journal_file_move_to_object(j->unique_file, 0, j->unique_offset, &o); | |
2408 | if (r < 0) | |
2409 | return r; | |
2410 | ||
2411 | /* Let's do the type check by hand, since we used 0 context above. */ | |
2412 | if (o->object.type != OBJECT_DATA) | |
2413 | return -EBADMSG; | |
2414 | ||
93b73b06 | 2415 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2416 | if (r < 0) |
2417 | return r; | |
2418 | ||
2419 | /* OK, now let's see if we already returned this data | |
2420 | * object by checking if it exists in the earlier | |
2421 | * traversed files. */ | |
2422 | found = false; | |
2423 | HASHMAP_FOREACH(of, j->files, i) { | |
2424 | Object *oo; | |
2425 | uint64_t op; | |
2426 | ||
2427 | if (of == j->unique_file) | |
2428 | break; | |
2429 | ||
2430 | /* Skip this file it didn't have any fields | |
2431 | * indexed */ | |
2432 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2433 | le64toh(of->header->n_fields) <= 0) | |
2434 | continue; | |
2435 | ||
2436 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2437 | if (r < 0) | |
2438 | return r; | |
2439 | ||
2440 | if (r > 0) | |
2441 | found = true; | |
2442 | } | |
2443 | ||
2444 | if (found) | |
2445 | continue; | |
2446 | ||
93b73b06 | 2447 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2448 | if (r < 0) |
2449 | return r; | |
2450 | ||
2451 | return 1; | |
2452 | } | |
2453 | } | |
2454 | ||
115646c7 | 2455 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2456 | if (!j) |
2457 | return; | |
2458 | ||
2459 | j->unique_file = NULL; | |
2460 | j->unique_offset = 0; | |
2461 | } | |
85210bff LP |
2462 | |
2463 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
2464 | if (!j) | |
2465 | return -EINVAL; | |
2466 | ||
2467 | return !j->on_network; | |
2468 | } | |
d4205751 LP |
2469 | |
2470 | static char *lookup_field(const char *field, void *userdata) { | |
2471 | sd_journal *j = userdata; | |
2472 | const void *data; | |
2473 | size_t size, d; | |
2474 | int r; | |
2475 | ||
2476 | assert(field); | |
2477 | assert(j); | |
2478 | ||
2479 | r = sd_journal_get_data(j, field, &data, &size); | |
2480 | if (r < 0 || | |
2481 | size > REPLACE_VAR_MAX) | |
2482 | return strdup(field); | |
2483 | ||
2484 | d = strlen(field) + 1; | |
2485 | ||
2486 | return strndup((const char*) data + d, size - d); | |
2487 | } | |
2488 | ||
2489 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2490 | const void *data; | |
2491 | size_t size; | |
2492 | sd_id128_t id; | |
2493 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2494 | char *t; | |
2495 | int r; | |
2496 | ||
2497 | if (!j) | |
2498 | return -EINVAL; | |
2499 | if (!ret) | |
2500 | return -EINVAL; | |
2501 | ||
2502 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2503 | if (r < 0) | |
2504 | return r; | |
2505 | ||
2506 | cid = strndup((const char*) data + 11, size - 11); | |
2507 | if (!cid) | |
2508 | return -ENOMEM; | |
2509 | ||
2510 | r = sd_id128_from_string(cid, &id); | |
2511 | if (r < 0) | |
2512 | return r; | |
2513 | ||
844ec79b | 2514 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2515 | if (r < 0) |
2516 | return r; | |
2517 | ||
2518 | t = replace_var(text, lookup_field, j); | |
2519 | if (!t) | |
2520 | return -ENOMEM; | |
2521 | ||
2522 | *ret = t; | |
2523 | return 0; | |
2524 | } | |
8f1e860f LP |
2525 | |
2526 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
2527 | if (!ret) | |
2528 | return -EINVAL; | |
2529 | ||
844ec79b | 2530 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2531 | } |
93b73b06 LP |
2532 | |
2533 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
2534 | if (!j) | |
2535 | return -EINVAL; | |
2536 | ||
2537 | j->data_threshold = sz; | |
2538 | return 0; | |
2539 | } | |
2540 | ||
2541 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
2542 | if (!j) | |
2543 | return -EINVAL; | |
2544 | if (!sz) | |
2545 | return -EINVAL; | |
2546 | ||
2547 | *sz = j->data_threshold; | |
2548 | return 0; | |
2549 | } |