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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" | |
87d2c1ff | 44 | |
cab8ac60 LP |
45 | #define JOURNAL_FILES_MAX 1024 |
46 | ||
85210bff LP |
47 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
48 | ||
d4205751 LP |
49 | #define REPLACE_VAR_MAX 256 |
50 | ||
93b73b06 LP |
51 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
52 | ||
6fe391c5 ZJS |
53 | /* We return an error here only if we didn't manage to |
54 | memorize the real error. */ | |
3ac251b8 LP |
55 | static int set_put_error(sd_journal *j, int r) { |
56 | int k; | |
57 | ||
6fe391c5 ZJS |
58 | if (r >= 0) |
59 | return r; | |
60 | ||
3ac251b8 LP |
61 | k = set_ensure_allocated(&j->errors, trivial_hash_func, trivial_compare_func); |
62 | if (k < 0) | |
63 | return k; | |
64 | ||
65 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
66 | } |
67 | ||
de190aef | 68 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
69 | Iterator i; |
70 | JournalFile *f; | |
71 | ||
72 | assert(j); | |
73 | ||
74 | j->current_file = NULL; | |
75 | j->current_field = 0; | |
76 | ||
77 | HASHMAP_FOREACH(f, j->files, i) | |
78 | f->current_offset = 0; | |
79 | } | |
80 | ||
de190aef LP |
81 | static void reset_location(sd_journal *j) { |
82 | assert(j); | |
83 | ||
84 | detach_location(j); | |
85 | zero(j->current_location); | |
86 | } | |
87 | ||
a87247dd | 88 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 89 | assert(l); |
a87247dd | 90 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
91 | assert(f); |
92 | assert(o->object.type == OBJECT_ENTRY); | |
93 | ||
a87247dd | 94 | l->type = type; |
de190aef LP |
95 | l->seqnum = le64toh(o->entry.seqnum); |
96 | l->seqnum_id = f->header->seqnum_id; | |
97 | l->realtime = le64toh(o->entry.realtime); | |
98 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 99 | l->boot_id = o->entry.boot_id; |
de190aef LP |
100 | l->xor_hash = le64toh(o->entry.xor_hash); |
101 | ||
102 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
103 | } | |
104 | ||
87011c25 ZJS |
105 | static void set_location(sd_journal *j, LocationType type, JournalFile *f, Object *o, |
106 | direction_t direction, uint64_t offset) { | |
de190aef | 107 | assert(j); |
a87247dd | 108 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
109 | assert(f); |
110 | assert(o); | |
111 | ||
a87247dd | 112 | init_location(&j->current_location, type, f, o); |
de190aef LP |
113 | |
114 | j->current_file = f; | |
115 | j->current_field = 0; | |
116 | ||
87011c25 | 117 | f->last_direction = direction; |
de190aef LP |
118 | f->current_offset = offset; |
119 | } | |
120 | ||
cbdca852 LP |
121 | static int match_is_valid(const void *data, size_t size) { |
122 | const char *b, *p; | |
123 | ||
124 | assert(data); | |
125 | ||
126 | if (size < 2) | |
127 | return false; | |
128 | ||
129 | if (startswith(data, "__")) | |
130 | return false; | |
131 | ||
132 | b = data; | |
133 | for (p = b; p < b + size; p++) { | |
134 | ||
135 | if (*p == '=') | |
136 | return p > b; | |
137 | ||
138 | if (*p == '_') | |
139 | continue; | |
140 | ||
141 | if (*p >= 'A' && *p <= 'Z') | |
142 | continue; | |
143 | ||
144 | if (*p >= '0' && *p <= '9') | |
145 | continue; | |
146 | ||
147 | return false; | |
148 | } | |
149 | ||
150 | return false; | |
151 | } | |
152 | ||
153 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
154 | const uint8_t *a = _a, *b = _b; |
155 | size_t j; | |
de190aef LP |
156 | |
157 | for (j = 0; j < s && j < t; j++) { | |
158 | ||
de190aef | 159 | if (a[j] != b[j]) |
cbdca852 | 160 | return false; |
de190aef | 161 | |
cbdca852 LP |
162 | if (a[j] == '=') |
163 | return true; | |
de190aef LP |
164 | } |
165 | ||
cbdca852 LP |
166 | return true; |
167 | } | |
168 | ||
169 | static Match *match_new(Match *p, MatchType t) { | |
170 | Match *m; | |
171 | ||
172 | m = new0(Match, 1); | |
173 | if (!m) | |
174 | return NULL; | |
175 | ||
176 | m->type = t; | |
177 | ||
178 | if (p) { | |
179 | m->parent = p; | |
180 | LIST_PREPEND(Match, matches, p->matches, m); | |
181 | } | |
182 | ||
183 | return m; | |
184 | } | |
185 | ||
186 | static void match_free(Match *m) { | |
187 | assert(m); | |
188 | ||
189 | while (m->matches) | |
190 | match_free(m->matches); | |
191 | ||
192 | if (m->parent) | |
193 | LIST_REMOVE(Match, matches, m->parent->matches, m); | |
194 | ||
195 | free(m->data); | |
196 | free(m); | |
197 | } | |
198 | ||
199 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 200 | if (!m || m->matches) |
cbdca852 LP |
201 | return; |
202 | ||
203 | match_free(m); | |
de190aef LP |
204 | } |
205 | ||
a5344d2c | 206 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 207 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 208 | le64_t le_hash; |
87d2c1ff | 209 | |
a5344d2c LP |
210 | if (!j) |
211 | return -EINVAL; | |
cbdca852 | 212 | |
a5344d2c LP |
213 | if (!data) |
214 | return -EINVAL; | |
cbdca852 LP |
215 | |
216 | if (size == 0) | |
217 | size = strlen(data); | |
218 | ||
219 | if (!match_is_valid(data, size)) | |
1cc101f1 LP |
220 | return -EINVAL; |
221 | ||
cd34b3c6 HH |
222 | /* level 0: AND term |
223 | * level 1: OR terms | |
224 | * level 2: AND terms | |
225 | * level 3: OR terms | |
226 | * level 4: concrete matches */ | |
cbdca852 LP |
227 | |
228 | if (!j->level0) { | |
cd34b3c6 | 229 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
230 | if (!j->level0) |
231 | return -ENOMEM; | |
232 | } | |
233 | ||
234 | if (!j->level1) { | |
cd34b3c6 | 235 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
236 | if (!j->level1) |
237 | return -ENOMEM; | |
238 | } | |
239 | ||
cd34b3c6 HH |
240 | if (!j->level2) { |
241 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
242 | if (!j->level2) | |
243 | return -ENOMEM; | |
244 | } | |
245 | ||
246 | assert(j->level0->type == MATCH_AND_TERM); | |
247 | assert(j->level1->type == MATCH_OR_TERM); | |
248 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 249 | |
de190aef LP |
250 | le_hash = htole64(hash64(data, size)); |
251 | ||
cd34b3c6 HH |
252 | LIST_FOREACH(matches, l3, j->level2->matches) { |
253 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 254 | |
cd34b3c6 HH |
255 | LIST_FOREACH(matches, l4, l3->matches) { |
256 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 257 | |
cbdca852 LP |
258 | /* Exactly the same match already? Then ignore |
259 | * this addition */ | |
cd34b3c6 HH |
260 | if (l4->le_hash == le_hash && |
261 | l4->size == size && | |
262 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
263 | return 0; |
264 | ||
265 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
266 | if (same_field(data, size, l4->data, l4->size)) { |
267 | add_here = l3; | |
cbdca852 LP |
268 | break; |
269 | } | |
270 | } | |
271 | ||
272 | if (add_here) | |
273 | break; | |
de190aef LP |
274 | } |
275 | ||
cbdca852 | 276 | if (!add_here) { |
cd34b3c6 | 277 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
278 | if (!add_here) |
279 | goto fail; | |
280 | } | |
281 | ||
282 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 283 | if (!m) |
cbdca852 | 284 | goto fail; |
87d2c1ff | 285 | |
cbdca852 | 286 | m->le_hash = le_hash; |
1cc101f1 | 287 | m->size = size; |
cbdca852 LP |
288 | m->data = memdup(data, size); |
289 | if (!m->data) | |
290 | goto fail; | |
291 | ||
292 | detach_location(j); | |
293 | ||
294 | return 0; | |
295 | ||
296 | fail: | |
c5a10d9c ZJS |
297 | match_free_if_empty(add_here); |
298 | match_free_if_empty(j->level2); | |
299 | match_free_if_empty(j->level1); | |
300 | match_free_if_empty(j->level0); | |
cbdca852 LP |
301 | |
302 | return -ENOMEM; | |
303 | } | |
304 | ||
cd34b3c6 | 305 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
cbdca852 | 306 | assert(j); |
1cc101f1 | 307 | |
cbdca852 LP |
308 | if (!j->level0) |
309 | return 0; | |
310 | ||
311 | if (!j->level1) | |
312 | return 0; | |
313 | ||
314 | if (!j->level1->matches) | |
315 | return 0; | |
316 | ||
cd34b3c6 HH |
317 | j->level1 = NULL; |
318 | j->level2 = NULL; | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
324 | assert(j); | |
325 | ||
326 | if (!j->level0) | |
327 | return 0; | |
328 | ||
329 | if (!j->level1) | |
330 | return 0; | |
331 | ||
332 | if (!j->level2) | |
333 | return 0; | |
334 | ||
335 | if (!j->level2->matches) | |
336 | return 0; | |
cbdca852 | 337 | |
cd34b3c6 | 338 | j->level2 = NULL; |
cbdca852 LP |
339 | return 0; |
340 | } | |
341 | ||
342 | static char *match_make_string(Match *m) { | |
343 | char *p, *r; | |
344 | Match *i; | |
345 | bool enclose = false; | |
346 | ||
347 | if (!m) | |
348 | return strdup(""); | |
349 | ||
350 | if (m->type == MATCH_DISCRETE) | |
351 | return strndup(m->data, m->size); | |
352 | ||
353 | p = NULL; | |
354 | LIST_FOREACH(matches, i, m->matches) { | |
355 | char *t, *k; | |
356 | ||
357 | t = match_make_string(i); | |
358 | if (!t) { | |
359 | free(p); | |
360 | return NULL; | |
361 | } | |
362 | ||
363 | if (p) { | |
b7def684 | 364 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
365 | free(p); |
366 | free(t); | |
367 | ||
368 | if (!k) | |
369 | return NULL; | |
370 | ||
371 | p = k; | |
372 | ||
373 | enclose = true; | |
374 | } else { | |
375 | free(p); | |
376 | p = t; | |
377 | } | |
87d2c1ff LP |
378 | } |
379 | ||
cbdca852 | 380 | if (enclose) { |
b7def684 | 381 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
382 | free(p); |
383 | return r; | |
384 | } | |
87d2c1ff | 385 | |
cbdca852 LP |
386 | return p; |
387 | } | |
de7b95cd | 388 | |
cbdca852 LP |
389 | char *journal_make_match_string(sd_journal *j) { |
390 | assert(j); | |
8f9b6cd9 | 391 | |
cbdca852 | 392 | return match_make_string(j->level0); |
87d2c1ff LP |
393 | } |
394 | ||
a5344d2c | 395 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
cbdca852 | 396 | |
a5344d2c LP |
397 | if (!j) |
398 | return; | |
87d2c1ff | 399 | |
cbdca852 LP |
400 | if (j->level0) |
401 | match_free(j->level0); | |
de7b95cd | 402 | |
cd34b3c6 | 403 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 404 | |
de190aef | 405 | detach_location(j); |
87d2c1ff LP |
406 | } |
407 | ||
468b21de | 408 | static int compare_entry_order(JournalFile *af, Object *_ao, |
5afbe712 | 409 | JournalFile *bf, uint64_t bp) { |
87d2c1ff | 410 | |
cec736d2 | 411 | uint64_t a, b; |
468b21de LP |
412 | Object *ao, *bo; |
413 | int r; | |
87d2c1ff | 414 | |
de190aef | 415 | assert(af); |
de190aef | 416 | assert(bf); |
468b21de LP |
417 | assert(_ao); |
418 | ||
419 | /* The mmap cache might invalidate the object from the first | |
420 | * file if we look at the one from the second file. Hence | |
421 | * temporarily copy the header of the first one, and look at | |
422 | * that only. */ | |
423 | ao = alloca(offsetof(EntryObject, items)); | |
424 | memcpy(ao, _ao, offsetof(EntryObject, items)); | |
425 | ||
426 | r = journal_file_move_to_object(bf, OBJECT_ENTRY, bp, &bo); | |
427 | if (r < 0) | |
428 | return strcmp(af->path, bf->path); | |
de190aef | 429 | |
ae2cc8ef | 430 | /* We operate on two different files here, hence we can access |
1cc101f1 LP |
431 | * two objects at the same time, which we normally can't. |
432 | * | |
433 | * If contents and timestamps match, these entries are | |
434 | * identical, even if the seqnum does not match */ | |
435 | ||
436 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id) && | |
437 | ao->entry.monotonic == bo->entry.monotonic && | |
438 | ao->entry.realtime == bo->entry.realtime && | |
439 | ao->entry.xor_hash == bo->entry.xor_hash) | |
440 | return 0; | |
ae2cc8ef | 441 | |
cec736d2 | 442 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { |
87d2c1ff | 443 | |
cec736d2 LP |
444 | /* If this is from the same seqnum source, compare |
445 | * seqnums */ | |
446 | a = le64toh(ao->entry.seqnum); | |
447 | b = le64toh(bo->entry.seqnum); | |
87d2c1ff | 448 | |
ae2cc8ef LP |
449 | if (a < b) |
450 | return -1; | |
451 | if (a > b) | |
452 | return 1; | |
1cc101f1 LP |
453 | |
454 | /* Wow! This is weird, different data but the same | |
455 | * seqnums? Something is borked, but let's make the | |
456 | * best of it and compare by time. */ | |
ae2cc8ef | 457 | } |
87d2c1ff | 458 | |
ae2cc8ef | 459 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id)) { |
87d2c1ff | 460 | |
cec736d2 LP |
461 | /* If the boot id matches compare monotonic time */ |
462 | a = le64toh(ao->entry.monotonic); | |
463 | b = le64toh(bo->entry.monotonic); | |
87d2c1ff | 464 | |
ae2cc8ef LP |
465 | if (a < b) |
466 | return -1; | |
467 | if (a > b) | |
468 | return 1; | |
87d2c1ff LP |
469 | } |
470 | ||
ae2cc8ef LP |
471 | /* Otherwise compare UTC time */ |
472 | a = le64toh(ao->entry.realtime); | |
c4aff78b | 473 | b = le64toh(bo->entry.realtime); |
ae2cc8ef LP |
474 | |
475 | if (a < b) | |
476 | return -1; | |
477 | if (a > b) | |
478 | return 1; | |
479 | ||
480 | /* Finally, compare by contents */ | |
481 | a = le64toh(ao->entry.xor_hash); | |
c4aff78b | 482 | b = le64toh(bo->entry.xor_hash); |
ae2cc8ef LP |
483 | |
484 | if (a < b) | |
485 | return -1; | |
486 | if (a > b) | |
487 | return 1; | |
488 | ||
489 | return 0; | |
87d2c1ff LP |
490 | } |
491 | ||
44a6b1b6 | 492 | _pure_ static int compare_with_location(JournalFile *af, Object *ao, Location *l) { |
de190aef LP |
493 | uint64_t a; |
494 | ||
495 | assert(af); | |
496 | assert(ao); | |
497 | assert(l); | |
a87247dd | 498 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
499 | |
500 | if (l->monotonic_set && | |
501 | sd_id128_equal(ao->entry.boot_id, l->boot_id) && | |
502 | l->realtime_set && | |
503 | le64toh(ao->entry.realtime) == l->realtime && | |
504 | l->xor_hash_set && | |
505 | le64toh(ao->entry.xor_hash) == l->xor_hash) | |
506 | return 0; | |
507 | ||
508 | if (l->seqnum_set && | |
509 | sd_id128_equal(af->header->seqnum_id, l->seqnum_id)) { | |
510 | ||
511 | a = le64toh(ao->entry.seqnum); | |
512 | ||
513 | if (a < l->seqnum) | |
514 | return -1; | |
515 | if (a > l->seqnum) | |
516 | return 1; | |
517 | } | |
518 | ||
519 | if (l->monotonic_set && | |
520 | sd_id128_equal(ao->entry.boot_id, l->boot_id)) { | |
521 | ||
522 | a = le64toh(ao->entry.monotonic); | |
523 | ||
524 | if (a < l->monotonic) | |
525 | return -1; | |
526 | if (a > l->monotonic) | |
527 | return 1; | |
528 | } | |
529 | ||
530 | if (l->realtime_set) { | |
531 | ||
532 | a = le64toh(ao->entry.realtime); | |
533 | ||
534 | if (a < l->realtime) | |
535 | return -1; | |
536 | if (a > l->realtime) | |
537 | return 1; | |
538 | } | |
539 | ||
540 | if (l->xor_hash_set) { | |
541 | a = le64toh(ao->entry.xor_hash); | |
542 | ||
543 | if (a < l->xor_hash) | |
544 | return -1; | |
545 | if (a > l->xor_hash) | |
546 | return 1; | |
547 | } | |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
cbdca852 LP |
552 | static int next_for_match( |
553 | sd_journal *j, | |
554 | Match *m, | |
555 | JournalFile *f, | |
556 | uint64_t after_offset, | |
557 | direction_t direction, | |
558 | Object **ret, | |
559 | uint64_t *offset) { | |
560 | ||
de7b95cd | 561 | int r; |
cbdca852 LP |
562 | uint64_t np = 0; |
563 | Object *n; | |
de7b95cd LP |
564 | |
565 | assert(j); | |
cbdca852 LP |
566 | assert(m); |
567 | assert(f); | |
de7b95cd | 568 | |
cbdca852 LP |
569 | if (m->type == MATCH_DISCRETE) { |
570 | uint64_t dp; | |
de190aef | 571 | |
cbdca852 | 572 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
573 | if (r <= 0) |
574 | return r; | |
575 | ||
cbdca852 | 576 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 577 | |
cbdca852 LP |
578 | } else if (m->type == MATCH_OR_TERM) { |
579 | Match *i; | |
de7b95cd | 580 | |
cbdca852 | 581 | /* Find the earliest match beyond after_offset */ |
de190aef | 582 | |
cbdca852 LP |
583 | LIST_FOREACH(matches, i, m->matches) { |
584 | uint64_t cp; | |
de190aef | 585 | |
cbdca852 | 586 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
587 | if (r < 0) |
588 | return r; | |
cbdca852 LP |
589 | else if (r > 0) { |
590 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
591 | np = cp; | |
592 | } | |
593 | } | |
b4e5f920 | 594 | |
cbdca852 | 595 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 596 | Match *i, *last_moved; |
de190aef | 597 | |
cbdca852 | 598 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 599 | * this until we find an offset that matches for all |
cbdca852 | 600 | * matches. */ |
de190aef | 601 | |
cbdca852 LP |
602 | if (!m->matches) |
603 | return 0; | |
de7b95cd | 604 | |
2bc8ca0c ZJS |
605 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
606 | if (r <= 0) | |
607 | return r; | |
de190aef | 608 | |
2bc8ca0c ZJS |
609 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
610 | last_moved = m->matches; | |
de190aef | 611 | |
2bc8ca0c ZJS |
612 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
613 | uint64_t cp; | |
de190aef | 614 | |
2bc8ca0c ZJS |
615 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
616 | if (r <= 0) | |
617 | return r; | |
de190aef | 618 | |
2bc8ca0c ZJS |
619 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
620 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
621 | np = cp; | |
622 | last_moved = i; | |
de190aef | 623 | } |
2bc8ca0c | 624 | } |
cbdca852 | 625 | } |
de190aef | 626 | |
cbdca852 LP |
627 | if (np == 0) |
628 | return 0; | |
de190aef | 629 | |
cbdca852 LP |
630 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
631 | if (r < 0) | |
632 | return r; | |
de7b95cd | 633 | |
de190aef | 634 | if (ret) |
cbdca852 | 635 | *ret = n; |
de190aef | 636 | if (offset) |
cbdca852 | 637 | *offset = np; |
de190aef LP |
638 | |
639 | return 1; | |
640 | } | |
641 | ||
cbdca852 LP |
642 | static int find_location_for_match( |
643 | sd_journal *j, | |
644 | Match *m, | |
645 | JournalFile *f, | |
646 | direction_t direction, | |
647 | Object **ret, | |
648 | uint64_t *offset) { | |
649 | ||
de190aef | 650 | int r; |
de190aef LP |
651 | |
652 | assert(j); | |
cbdca852 | 653 | assert(m); |
de190aef | 654 | assert(f); |
de190aef | 655 | |
cbdca852 LP |
656 | if (m->type == MATCH_DISCRETE) { |
657 | uint64_t dp; | |
de190aef | 658 | |
cbdca852 | 659 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
660 | if (r <= 0) |
661 | return r; | |
662 | ||
cbdca852 | 663 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 664 | |
cbdca852 LP |
665 | if (j->current_location.type == LOCATION_HEAD) |
666 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
667 | if (j->current_location.type == LOCATION_TAIL) | |
668 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
669 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
670 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
671 | if (j->current_location.monotonic_set) { | |
672 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
673 | if (r != -ENOENT) | |
674 | return r; | |
675 | } | |
676 | if (j->current_location.realtime_set) | |
677 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 678 | |
cbdca852 | 679 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 680 | |
cbdca852 LP |
681 | } else if (m->type == MATCH_OR_TERM) { |
682 | uint64_t np = 0; | |
683 | Object *n; | |
684 | Match *i; | |
de7b95cd | 685 | |
cbdca852 | 686 | /* Find the earliest match */ |
de7b95cd | 687 | |
cbdca852 LP |
688 | LIST_FOREACH(matches, i, m->matches) { |
689 | uint64_t cp; | |
690 | ||
691 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
692 | if (r < 0) | |
693 | return r; | |
694 | else if (r > 0) { | |
695 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
696 | np = cp; | |
de190aef | 697 | } |
cbdca852 | 698 | } |
de190aef | 699 | |
cbdca852 LP |
700 | if (np == 0) |
701 | return 0; | |
de7b95cd | 702 | |
cbdca852 LP |
703 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
704 | if (r < 0) | |
705 | return r; | |
de7b95cd | 706 | |
cbdca852 LP |
707 | if (ret) |
708 | *ret = n; | |
709 | if (offset) | |
710 | *offset = np; | |
de190aef | 711 | |
cbdca852 | 712 | return 1; |
e892bd17 | 713 | |
cbdca852 LP |
714 | } else { |
715 | Match *i; | |
716 | uint64_t np = 0; | |
717 | ||
718 | assert(m->type == MATCH_AND_TERM); | |
719 | ||
720 | /* First jump to the last match, and then find the | |
721 | * next one where all matches match */ | |
722 | ||
723 | if (!m->matches) | |
724 | return 0; | |
725 | ||
726 | LIST_FOREACH(matches, i, m->matches) { | |
727 | uint64_t cp; | |
728 | ||
729 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
730 | if (r <= 0) | |
4b067dc9 LP |
731 | return r; |
732 | ||
cbdca852 LP |
733 | if (np == 0 || (direction == DIRECTION_DOWN ? np < cp : np > cp)) |
734 | np = cp; | |
de7b95cd LP |
735 | } |
736 | ||
cbdca852 LP |
737 | return next_for_match(j, m, f, np, direction, ret, offset); |
738 | } | |
739 | } | |
de190aef | 740 | |
cbdca852 LP |
741 | static int find_location_with_matches( |
742 | sd_journal *j, | |
743 | JournalFile *f, | |
744 | direction_t direction, | |
745 | Object **ret, | |
746 | uint64_t *offset) { | |
747 | ||
748 | int r; | |
749 | ||
750 | assert(j); | |
751 | assert(f); | |
752 | assert(ret); | |
753 | assert(offset); | |
754 | ||
755 | if (!j->level0) { | |
756 | /* No matches is simple */ | |
757 | ||
758 | if (j->current_location.type == LOCATION_HEAD) | |
759 | return journal_file_next_entry(f, NULL, 0, DIRECTION_DOWN, ret, offset); | |
760 | if (j->current_location.type == LOCATION_TAIL) | |
761 | return journal_file_next_entry(f, NULL, 0, DIRECTION_UP, ret, offset); | |
762 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
763 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
764 | if (j->current_location.monotonic_set) { | |
765 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
766 | if (r != -ENOENT) | |
767 | return r; | |
de7b95cd | 768 | } |
cbdca852 LP |
769 | if (j->current_location.realtime_set) |
770 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 771 | |
cbdca852 LP |
772 | return journal_file_next_entry(f, NULL, 0, direction, ret, offset); |
773 | } else | |
774 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
775 | } | |
de7b95cd | 776 | |
cbdca852 LP |
777 | static int next_with_matches( |
778 | sd_journal *j, | |
779 | JournalFile *f, | |
780 | direction_t direction, | |
781 | Object **ret, | |
782 | uint64_t *offset) { | |
783 | ||
784 | Object *c; | |
785 | uint64_t cp; | |
786 | ||
787 | assert(j); | |
788 | assert(f); | |
789 | assert(ret); | |
790 | assert(offset); | |
791 | ||
792 | c = *ret; | |
793 | cp = *offset; | |
794 | ||
795 | /* No matches is easy. We simple advance the file | |
796 | * pointer by one. */ | |
797 | if (!j->level0) | |
798 | return journal_file_next_entry(f, c, cp, direction, ret, offset); | |
799 | ||
800 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 801 | * with an offset at least one step larger */ |
cbdca852 | 802 | return next_for_match(j, j->level0, f, direction == DIRECTION_DOWN ? cp+1 : cp-1, direction, ret, offset); |
de7b95cd LP |
803 | } |
804 | ||
de190aef LP |
805 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction, Object **ret, uint64_t *offset) { |
806 | Object *c; | |
807 | uint64_t cp; | |
cbdca852 | 808 | int r; |
de190aef LP |
809 | |
810 | assert(j); | |
811 | assert(f); | |
812 | ||
87011c25 | 813 | if (f->last_direction == direction && f->current_offset > 0) { |
466ccd92 LP |
814 | cp = f->current_offset; |
815 | ||
816 | r = journal_file_move_to_object(f, OBJECT_ENTRY, cp, &c); | |
de190aef LP |
817 | if (r < 0) |
818 | return r; | |
819 | ||
de190aef LP |
820 | r = next_with_matches(j, f, direction, &c, &cp); |
821 | if (r <= 0) | |
822 | return r; | |
de190aef | 823 | } else { |
cbdca852 | 824 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
825 | if (r <= 0) |
826 | return r; | |
de190aef LP |
827 | } |
828 | ||
cbdca852 LP |
829 | /* OK, we found the spot, now let's advance until to an entry |
830 | * that is actually different from what we were previously | |
831 | * looking at. This is necessary to handle entries which exist | |
832 | * in two (or more) journal files, and which shall all be | |
833 | * suppressed but one. */ | |
834 | ||
de190aef LP |
835 | for (;;) { |
836 | bool found; | |
837 | ||
838 | if (j->current_location.type == LOCATION_DISCRETE) { | |
839 | int k; | |
840 | ||
841 | k = compare_with_location(f, c, &j->current_location); | |
842 | if (direction == DIRECTION_DOWN) | |
cbdca852 | 843 | found = k > 0; |
de190aef | 844 | else |
cbdca852 | 845 | found = k < 0; |
de190aef LP |
846 | } else |
847 | found = true; | |
848 | ||
849 | if (found) { | |
850 | if (ret) | |
851 | *ret = c; | |
852 | if (offset) | |
853 | *offset = cp; | |
854 | return 1; | |
855 | } | |
856 | ||
857 | r = next_with_matches(j, f, direction, &c, &cp); | |
858 | if (r <= 0) | |
859 | return r; | |
860 | } | |
861 | } | |
862 | ||
e892bd17 | 863 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de LP |
864 | JournalFile *f, *new_file = NULL; |
865 | uint64_t new_offset = 0; | |
866 | Object *o; | |
867 | uint64_t p; | |
cec736d2 | 868 | Iterator i; |
87d2c1ff LP |
869 | int r; |
870 | ||
a5344d2c LP |
871 | if (!j) |
872 | return -EINVAL; | |
87d2c1ff | 873 | |
cec736d2 | 874 | HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 875 | bool found; |
87d2c1ff | 876 | |
de190aef | 877 | r = next_beyond_location(j, f, direction, &o, &p); |
e590af26 LP |
878 | if (r < 0) { |
879 | log_debug("Can't iterate through %s, ignoring: %s", f->path, strerror(-r)); | |
880 | continue; | |
881 | } else if (r == 0) | |
cec736d2 | 882 | continue; |
87d2c1ff | 883 | |
468b21de | 884 | if (!new_file) |
de190aef LP |
885 | found = true; |
886 | else { | |
887 | int k; | |
888 | ||
468b21de | 889 | k = compare_entry_order(f, o, new_file, new_offset); |
de190aef LP |
890 | |
891 | if (direction == DIRECTION_DOWN) | |
892 | found = k < 0; | |
893 | else | |
894 | found = k > 0; | |
895 | } | |
896 | ||
897 | if (found) { | |
468b21de | 898 | new_file = f; |
cec736d2 | 899 | new_offset = p; |
87d2c1ff | 900 | } |
87d2c1ff LP |
901 | } |
902 | ||
468b21de | 903 | if (!new_file) |
de190aef | 904 | return 0; |
ae2cc8ef | 905 | |
468b21de LP |
906 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_offset, &o); |
907 | if (r < 0) | |
908 | return r; | |
909 | ||
87011c25 | 910 | set_location(j, LOCATION_DISCRETE, new_file, o, direction, new_offset); |
ae2cc8ef | 911 | |
de190aef LP |
912 | return 1; |
913 | } | |
ae2cc8ef | 914 | |
a5344d2c | 915 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
916 | return real_journal_next(j, DIRECTION_DOWN); |
917 | } | |
ae2cc8ef | 918 | |
a5344d2c | 919 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
920 | return real_journal_next(j, DIRECTION_UP); |
921 | } | |
ae2cc8ef | 922 | |
6f003b43 | 923 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 924 | int c = 0, r; |
ae2cc8ef | 925 | |
a5344d2c LP |
926 | if (!j) |
927 | return -EINVAL; | |
de190aef | 928 | |
6f003b43 LP |
929 | if (skip == 0) { |
930 | /* If this is not a discrete skip, then at least | |
931 | * resolve the current location */ | |
932 | if (j->current_location.type != LOCATION_DISCRETE) | |
933 | return real_journal_next(j, direction); | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
938 | do { | |
939 | r = real_journal_next(j, direction); | |
de190aef LP |
940 | if (r < 0) |
941 | return r; | |
942 | ||
943 | if (r == 0) | |
944 | return c; | |
945 | ||
946 | skip--; | |
947 | c++; | |
6f003b43 | 948 | } while (skip > 0); |
87d2c1ff | 949 | |
de190aef | 950 | return c; |
87d2c1ff LP |
951 | } |
952 | ||
6f003b43 LP |
953 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
954 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
955 | } | |
de190aef | 956 | |
6f003b43 LP |
957 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
958 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
959 | } |
960 | ||
a5344d2c | 961 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 962 | Object *o; |
87d2c1ff | 963 | int r; |
3fbf9cbb | 964 | char bid[33], sid[33]; |
87d2c1ff | 965 | |
a5344d2c LP |
966 | if (!j) |
967 | return -EINVAL; | |
968 | if (!cursor) | |
969 | return -EINVAL; | |
87d2c1ff | 970 | |
3fbf9cbb LP |
971 | if (!j->current_file || j->current_file->current_offset <= 0) |
972 | return -EADDRNOTAVAIL; | |
87d2c1ff | 973 | |
de190aef | 974 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
975 | if (r < 0) |
976 | return r; | |
977 | ||
3fbf9cbb LP |
978 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
979 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 980 | |
3fbf9cbb | 981 | if (asprintf(cursor, |
507f22bd ZJS |
982 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
983 | sid, le64toh(o->entry.seqnum), | |
984 | bid, le64toh(o->entry.monotonic), | |
985 | le64toh(o->entry.realtime), | |
986 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 987 | return -ENOMEM; |
87d2c1ff | 988 | |
6f47ad30 | 989 | return 0; |
87d2c1ff LP |
990 | } |
991 | ||
a5344d2c | 992 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
c6511e85 | 993 | char *w, *state; |
de190aef | 994 | size_t l; |
de190aef LP |
995 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
996 | bool | |
997 | seqnum_id_set = false, | |
998 | seqnum_set = false, | |
999 | boot_id_set = false, | |
1000 | monotonic_set = false, | |
1001 | realtime_set = false, | |
1002 | xor_hash_set = false; | |
1003 | sd_id128_t seqnum_id, boot_id; | |
1004 | ||
a5344d2c LP |
1005 | if (!j) |
1006 | return -EINVAL; | |
c6511e85 | 1007 | if (isempty(cursor)) |
a5344d2c | 1008 | return -EINVAL; |
de190aef LP |
1009 | |
1010 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1011 | char *item; | |
1012 | int k = 0; | |
1013 | ||
1014 | if (l < 2 || w[1] != '=') | |
1015 | return -EINVAL; | |
1016 | ||
1017 | item = strndup(w, l); | |
1018 | if (!item) | |
1019 | return -ENOMEM; | |
1020 | ||
1021 | switch (w[0]) { | |
1022 | ||
1023 | case 's': | |
1024 | seqnum_id_set = true; | |
be3ea5ea | 1025 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
1026 | break; |
1027 | ||
1028 | case 'i': | |
1029 | seqnum_set = true; | |
be3ea5ea | 1030 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
1031 | k = -EINVAL; |
1032 | break; | |
1033 | ||
1034 | case 'b': | |
1035 | boot_id_set = true; | |
be3ea5ea | 1036 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
1037 | break; |
1038 | ||
1039 | case 'm': | |
1040 | monotonic_set = true; | |
be3ea5ea | 1041 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
1042 | k = -EINVAL; |
1043 | break; | |
1044 | ||
1045 | case 't': | |
1046 | realtime_set = true; | |
be3ea5ea | 1047 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1048 | k = -EINVAL; |
1049 | break; | |
1050 | ||
1051 | case 'x': | |
1052 | xor_hash_set = true; | |
be3ea5ea | 1053 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1054 | k = -EINVAL; |
1055 | break; | |
1056 | } | |
1057 | ||
1058 | free(item); | |
1059 | ||
1060 | if (k < 0) | |
1061 | return k; | |
1062 | } | |
1063 | ||
1064 | if ((!seqnum_set || !seqnum_id_set) && | |
1065 | (!monotonic_set || !boot_id_set) && | |
1066 | !realtime_set) | |
1067 | return -EINVAL; | |
1068 | ||
1069 | reset_location(j); | |
1070 | ||
a87247dd | 1071 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1072 | |
1073 | if (realtime_set) { | |
1074 | j->current_location.realtime = (uint64_t) realtime; | |
1075 | j->current_location.realtime_set = true; | |
1076 | } | |
1077 | ||
1078 | if (seqnum_set && seqnum_id_set) { | |
1079 | j->current_location.seqnum = (uint64_t) seqnum; | |
1080 | j->current_location.seqnum_id = seqnum_id; | |
1081 | j->current_location.seqnum_set = true; | |
1082 | } | |
1083 | ||
1084 | if (monotonic_set && boot_id_set) { | |
1085 | j->current_location.monotonic = (uint64_t) monotonic; | |
1086 | j->current_location.boot_id = boot_id; | |
1087 | j->current_location.monotonic_set = true; | |
1088 | } | |
1089 | ||
1090 | if (xor_hash_set) { | |
1091 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1092 | j->current_location.xor_hash_set = true; | |
1093 | } | |
1094 | ||
1095 | return 0; | |
1096 | } | |
1097 | ||
c6511e85 LP |
1098 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1099 | int r; | |
1100 | char *w, *state; | |
1101 | size_t l; | |
1102 | Object *o; | |
1103 | ||
1104 | if (!j) | |
1105 | return -EINVAL; | |
1106 | if (isempty(cursor)) | |
1107 | return -EINVAL; | |
1108 | ||
1109 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1110 | return -EADDRNOTAVAIL; | |
1111 | ||
1112 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1113 | if (r < 0) | |
1114 | return r; | |
1115 | ||
1116 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1117 | _cleanup_free_ char *item = NULL; | |
1118 | sd_id128_t id; | |
1119 | unsigned long long ll; | |
1120 | int k = 0; | |
1121 | ||
1122 | if (l < 2 || w[1] != '=') | |
1123 | return -EINVAL; | |
1124 | ||
1125 | item = strndup(w, l); | |
1126 | if (!item) | |
1127 | return -ENOMEM; | |
1128 | ||
1129 | switch (w[0]) { | |
1130 | ||
1131 | case 's': | |
1132 | k = sd_id128_from_string(item+2, &id); | |
1133 | if (k < 0) | |
1134 | return k; | |
1135 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1136 | return 0; | |
1137 | break; | |
1138 | ||
1139 | case 'i': | |
1140 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1141 | return -EINVAL; | |
1142 | if (ll != le64toh(o->entry.seqnum)) | |
1143 | return 0; | |
1144 | break; | |
1145 | ||
1146 | case 'b': | |
1147 | k = sd_id128_from_string(item+2, &id); | |
1148 | if (k < 0) | |
1149 | return k; | |
1150 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1151 | return 0; | |
1152 | break; | |
1153 | ||
1154 | case 'm': | |
1155 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1156 | return -EINVAL; | |
1157 | if (ll != le64toh(o->entry.monotonic)) | |
1158 | return 0; | |
1159 | break; | |
1160 | ||
1161 | case 't': | |
1162 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1163 | return -EINVAL; | |
1164 | if (ll != le64toh(o->entry.realtime)) | |
1165 | return 0; | |
1166 | break; | |
1167 | ||
1168 | case 'x': | |
1169 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1170 | return -EINVAL; | |
1171 | if (ll != le64toh(o->entry.xor_hash)) | |
1172 | return 0; | |
1173 | break; | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | return 1; | |
1178 | } | |
1179 | ||
1180 | ||
a5344d2c LP |
1181 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1182 | if (!j) | |
1183 | return -EINVAL; | |
de190aef LP |
1184 | |
1185 | reset_location(j); | |
a87247dd | 1186 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1187 | j->current_location.boot_id = boot_id; |
1188 | j->current_location.monotonic = usec; | |
1189 | j->current_location.monotonic_set = true; | |
1190 | ||
1191 | return 0; | |
1192 | } | |
1193 | ||
a5344d2c LP |
1194 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, 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.realtime = usec; |
1201 | j->current_location.realtime_set = true; | |
1202 | ||
1203 | return 0; | |
1204 | } | |
1205 | ||
a5344d2c LP |
1206 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1207 | if (!j) | |
1208 | return -EINVAL; | |
de190aef LP |
1209 | |
1210 | reset_location(j); | |
1211 | j->current_location.type = LOCATION_HEAD; | |
1212 | ||
1213 | return 0; | |
1214 | } | |
1215 | ||
a5344d2c LP |
1216 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1217 | if (!j) | |
1218 | return -EINVAL; | |
de190aef LP |
1219 | |
1220 | reset_location(j); | |
1221 | j->current_location.type = LOCATION_TAIL; | |
1222 | ||
1223 | return 0; | |
87d2c1ff LP |
1224 | } |
1225 | ||
85210bff LP |
1226 | static void check_network(sd_journal *j, int fd) { |
1227 | struct statfs sfs; | |
1228 | ||
1229 | assert(j); | |
1230 | ||
1231 | if (j->on_network) | |
1232 | return; | |
1233 | ||
1234 | if (fstatfs(fd, &sfs) < 0) | |
1235 | return; | |
1236 | ||
1237 | j->on_network = | |
bdd29249 HH |
1238 | F_TYPE_CMP(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1239 | F_TYPE_CMP(sfs.f_type, CODA_SUPER_MAGIC) || | |
1240 | F_TYPE_CMP(sfs.f_type, NCP_SUPER_MAGIC) || | |
1241 | F_TYPE_CMP(sfs.f_type, NFS_SUPER_MAGIC) || | |
1242 | F_TYPE_CMP(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1243 | } |
1244 | ||
a688baa8 ZJS |
1245 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1246 | const char *full, *tilded, *atted; | |
1247 | ||
1248 | full = strappend(prefix, ".journal"); | |
1249 | tilded = strappenda(full, "~"); | |
1250 | atted = strappenda(prefix, "@"); | |
1251 | ||
1252 | return streq(filename, full) || | |
1253 | streq(filename, tilded) || | |
1254 | startswith(filename, atted); | |
1255 | } | |
1256 | ||
1257 | static bool file_type_wanted(int flags, const char *filename) { | |
1258 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1259 | return false; | |
1260 | ||
1261 | /* no flags set → every type is OK */ | |
1262 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1263 | return true; | |
1264 | ||
1265 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1266 | return true; | |
1267 | ||
1268 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1269 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1270 | ||
1271 | assert_se(snprintf(prefix, sizeof(prefix), "user-%lu", (unsigned long) getuid()) | |
1272 | < (int) sizeof(prefix)); | |
1273 | ||
1274 | if (file_has_type_prefix(prefix, filename)) | |
1275 | return true; | |
1276 | } | |
1277 | ||
1278 | return false; | |
1279 | } | |
1280 | ||
5302ebe1 | 1281 | static int add_any_file(sd_journal *j, const char *path) { |
3fbf9cbb | 1282 | JournalFile *f; |
5302ebe1 | 1283 | int r; |
3fbf9cbb LP |
1284 | |
1285 | assert(j); | |
5302ebe1 | 1286 | assert(path); |
3fbf9cbb | 1287 | |
a50d7d43 | 1288 | if (hashmap_get(j->files, path)) |
50f20cfd | 1289 | return 0; |
50f20cfd LP |
1290 | |
1291 | if (hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
5302ebe1 | 1292 | log_warning("Too many open journal files, not adding %s.", path); |
3ac251b8 | 1293 | return set_put_error(j, -ETOOMANYREFS); |
50f20cfd LP |
1294 | } |
1295 | ||
16e9f408 | 1296 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1297 | if (r < 0) |
3fbf9cbb | 1298 | return r; |
3fbf9cbb | 1299 | |
72f59706 | 1300 | /* journal_file_dump(f); */ |
de190aef | 1301 | |
3fbf9cbb LP |
1302 | r = hashmap_put(j->files, f->path, f); |
1303 | if (r < 0) { | |
1304 | journal_file_close(f); | |
1305 | return r; | |
1306 | } | |
1307 | ||
5ec76417 | 1308 | log_debug("File %s added.", f->path); |
a50d7d43 | 1309 | |
85210bff LP |
1310 | check_network(j, f->fd); |
1311 | ||
a963990f LP |
1312 | j->current_invalidate_counter ++; |
1313 | ||
50f20cfd LP |
1314 | return 0; |
1315 | } | |
1316 | ||
5302ebe1 ZJS |
1317 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1318 | _cleanup_free_ char *path = NULL; | |
1319 | int r; | |
1320 | ||
1321 | assert(j); | |
1322 | assert(prefix); | |
1323 | assert(filename); | |
1324 | ||
1325 | if (j->no_new_files || | |
1326 | !file_type_wanted(j->flags, filename)) | |
1327 | return 0; | |
1328 | ||
1329 | path = strjoin(prefix, "/", filename, NULL); | |
1330 | if (!path) | |
1331 | return -ENOMEM; | |
1332 | ||
1333 | r = add_any_file(j, path); | |
1334 | if (r == -ENOENT) | |
1335 | return 0; | |
1336 | return 0; | |
1337 | } | |
1338 | ||
a963990f LP |
1339 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1340 | char *path; | |
50f20cfd LP |
1341 | JournalFile *f; |
1342 | ||
1343 | assert(j); | |
1344 | assert(prefix); | |
1345 | assert(filename); | |
1346 | ||
b7def684 | 1347 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1348 | if (!path) |
50f20cfd LP |
1349 | return -ENOMEM; |
1350 | ||
a963990f LP |
1351 | f = hashmap_get(j->files, path); |
1352 | free(path); | |
50f20cfd LP |
1353 | if (!f) |
1354 | return 0; | |
1355 | ||
1356 | hashmap_remove(j->files, f->path); | |
44a5fa34 | 1357 | |
5ec76417 | 1358 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1359 | |
3c1668da LP |
1360 | if (j->current_file == f) { |
1361 | j->current_file = NULL; | |
1362 | j->current_field = 0; | |
1363 | } | |
1364 | ||
1365 | if (j->unique_file == f) { | |
1366 | j->unique_file = NULL; | |
1367 | j->unique_offset = 0; | |
1368 | } | |
1369 | ||
50f20cfd LP |
1370 | journal_file_close(f); |
1371 | ||
a963990f LP |
1372 | j->current_invalidate_counter ++; |
1373 | ||
3fbf9cbb LP |
1374 | return 0; |
1375 | } | |
1376 | ||
a963990f | 1377 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1378 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1379 | int r; |
7fd1b19b | 1380 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1381 | sd_id128_t id, mid; |
a963990f | 1382 | Directory *m; |
3fbf9cbb LP |
1383 | |
1384 | assert(j); | |
1385 | assert(prefix); | |
a963990f | 1386 | assert(dirname); |
3fbf9cbb | 1387 | |
d95b1fb3 ZJS |
1388 | log_debug("Considering %s/%s.", prefix, dirname); |
1389 | ||
cf244689 | 1390 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1391 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1392 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1393 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1394 | return 0; |
1395 | ||
b7def684 | 1396 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1397 | if (!path) |
3fbf9cbb LP |
1398 | return -ENOMEM; |
1399 | ||
a963990f | 1400 | d = opendir(path); |
3fbf9cbb | 1401 | if (!d) { |
a963990f | 1402 | log_debug("Failed to open %s: %m", path); |
3fbf9cbb LP |
1403 | if (errno == ENOENT) |
1404 | return 0; | |
3fbf9cbb LP |
1405 | return -errno; |
1406 | } | |
1407 | ||
a963990f LP |
1408 | m = hashmap_get(j->directories_by_path, path); |
1409 | if (!m) { | |
1410 | m = new0(Directory, 1); | |
a50d7d43 | 1411 | if (!m) |
a963990f | 1412 | return -ENOMEM; |
a963990f LP |
1413 | |
1414 | m->is_root = false; | |
1415 | m->path = path; | |
1416 | ||
1417 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1418 | free(m); |
1419 | return -ENOMEM; | |
1420 | } | |
1421 | ||
a50d7d43 | 1422 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1423 | j->current_invalidate_counter ++; |
1424 | ||
5ec76417 | 1425 | log_debug("Directory %s added.", m->path); |
a963990f | 1426 | |
a50d7d43 | 1427 | } else if (m->is_root) |
a963990f | 1428 | return 0; |
a963990f LP |
1429 | |
1430 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1431 | ||
1432 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1433 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1434 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1435 | IN_ONLYDIR); |
a963990f LP |
1436 | |
1437 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1438 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1439 | } | |
1440 | ||
1441 | for (;;) { | |
7d5e9c0f LP |
1442 | struct dirent *de; |
1443 | union dirent_storage buf; | |
a963990f | 1444 | |
7d5e9c0f | 1445 | r = readdir_r(d, &buf.de, &de); |
a963990f LP |
1446 | if (r != 0 || !de) |
1447 | break; | |
1448 | ||
de2c3907 LP |
1449 | if (dirent_is_file_with_suffix(de, ".journal") || |
1450 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1451 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1452 | if (r < 0) { |
1453 | log_debug("Failed to add file %s/%s: %s", | |
1454 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1455 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1456 | if (r < 0) |
1457 | return r; | |
1458 | } | |
a963990f LP |
1459 | } |
1460 | } | |
1461 | ||
85210bff LP |
1462 | check_network(j, dirfd(d)); |
1463 | ||
a963990f LP |
1464 | return 0; |
1465 | } | |
1466 | ||
1467 | static int add_root_directory(sd_journal *j, const char *p) { | |
7fd1b19b | 1468 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1469 | Directory *m; |
1470 | int r; | |
1471 | ||
1472 | assert(j); | |
1473 | assert(p); | |
1474 | ||
1475 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1476 | !path_startswith(p, "/run")) | |
1477 | return -EINVAL; | |
1478 | ||
1479 | d = opendir(p); | |
1480 | if (!d) | |
1481 | return -errno; | |
1482 | ||
1483 | m = hashmap_get(j->directories_by_path, p); | |
1484 | if (!m) { | |
1485 | m = new0(Directory, 1); | |
a50d7d43 | 1486 | if (!m) |
a963990f | 1487 | return -ENOMEM; |
a963990f LP |
1488 | |
1489 | m->is_root = true; | |
1490 | m->path = strdup(p); | |
1491 | if (!m->path) { | |
a963990f LP |
1492 | free(m); |
1493 | return -ENOMEM; | |
1494 | } | |
1495 | ||
1496 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1497 | free(m->path); |
1498 | free(m); | |
1499 | return -ENOMEM; | |
1500 | } | |
1501 | ||
1502 | j->current_invalidate_counter ++; | |
1503 | ||
5ec76417 | 1504 | log_debug("Root directory %s added.", m->path); |
a963990f | 1505 | |
a50d7d43 | 1506 | } else if (!m->is_root) |
a963990f | 1507 | return 0; |
50f20cfd | 1508 | |
a963990f LP |
1509 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1510 | ||
1511 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1512 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1513 | IN_ONLYDIR); |
a963990f LP |
1514 | |
1515 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1516 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1517 | } | |
50f20cfd | 1518 | |
5302ebe1 ZJS |
1519 | if (j->no_new_files) |
1520 | return 0; | |
1521 | ||
3fbf9cbb | 1522 | for (;;) { |
7d5e9c0f LP |
1523 | struct dirent *de; |
1524 | union dirent_storage buf; | |
a963990f | 1525 | sd_id128_t id; |
3fbf9cbb | 1526 | |
7d5e9c0f | 1527 | r = readdir_r(d, &buf.de, &de); |
3fbf9cbb LP |
1528 | if (r != 0 || !de) |
1529 | break; | |
1530 | ||
de2c3907 LP |
1531 | if (dirent_is_file_with_suffix(de, ".journal") || |
1532 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1533 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1534 | if (r < 0) { |
1535 | log_debug("Failed to add file %s/%s: %s", | |
1536 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1537 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1538 | if (r < 0) |
1539 | return r; | |
1540 | } | |
6f5878a2 | 1541 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1542 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1543 | ||
1544 | r = add_directory(j, m->path, de->d_name); | |
1545 | if (r < 0) | |
1546 | log_debug("Failed to add directory %s/%s: %s", m->path, de->d_name, strerror(-r)); | |
1547 | } | |
3fbf9cbb LP |
1548 | } |
1549 | ||
85210bff LP |
1550 | check_network(j, dirfd(d)); |
1551 | ||
a963990f LP |
1552 | return 0; |
1553 | } | |
1554 | ||
1555 | static int remove_directory(sd_journal *j, Directory *d) { | |
1556 | assert(j); | |
1557 | ||
1558 | if (d->wd > 0) { | |
1559 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1560 | ||
1561 | if (j->inotify_fd >= 0) | |
1562 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1563 | } | |
1564 | ||
1565 | hashmap_remove(j->directories_by_path, d->path); | |
1566 | ||
1567 | if (d->is_root) | |
5ec76417 | 1568 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1569 | else |
5ec76417 | 1570 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1571 | |
1572 | free(d->path); | |
1573 | free(d); | |
50f20cfd | 1574 | |
3fbf9cbb LP |
1575 | return 0; |
1576 | } | |
1577 | ||
a963990f | 1578 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1579 | int r; |
a963990f LP |
1580 | const char search_paths[] = |
1581 | "/run/log/journal\0" | |
1582 | "/var/log/journal\0"; | |
1583 | const char *p; | |
50f20cfd LP |
1584 | |
1585 | assert(j); | |
50f20cfd | 1586 | |
a963990f LP |
1587 | /* We ignore most errors here, since the idea is to only open |
1588 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1589 | |
6fe391c5 ZJS |
1590 | NULSTR_FOREACH(p, search_paths) { |
1591 | r = add_root_directory(j, p); | |
3ac251b8 LP |
1592 | if (r < 0 && r != -ENOENT) { |
1593 | r = set_put_error(j, r); | |
1594 | if (r < 0) | |
1595 | return r; | |
1596 | } | |
6fe391c5 | 1597 | } |
50f20cfd | 1598 | |
a963990f | 1599 | return 0; |
50f20cfd LP |
1600 | } |
1601 | ||
5302ebe1 ZJS |
1602 | static int add_current_paths(sd_journal *j) { |
1603 | Iterator i; | |
1604 | JournalFile *f; | |
1605 | ||
1606 | assert(j); | |
1607 | assert(j->no_new_files); | |
1608 | ||
1609 | /* Simply adds all directories for files we have open as | |
1610 | * "root" directories. We don't expect errors here, so we | |
1611 | * treat them as fatal. */ | |
1612 | ||
1613 | HASHMAP_FOREACH(f, j->files, i) { | |
1614 | int r; | |
1615 | _cleanup_free_ char *dir; | |
1616 | ||
1617 | dir = dirname_malloc(f->path); | |
1618 | if (!dir) | |
1619 | return -ENOMEM; | |
1620 | ||
1621 | r = add_root_directory(j, dir); | |
1622 | if (r < 0) { | |
1623 | set_put_error(j, r); | |
1624 | return r; | |
1625 | } | |
1626 | } | |
1627 | ||
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | ||
a963990f | 1632 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1633 | assert(j); |
50f20cfd | 1634 | |
a963990f LP |
1635 | if (j->inotify_fd < 0) { |
1636 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1637 | if (j->inotify_fd < 0) | |
1638 | return -errno; | |
1639 | } | |
50f20cfd | 1640 | |
a963990f LP |
1641 | if (!j->directories_by_wd) { |
1642 | j->directories_by_wd = hashmap_new(trivial_hash_func, trivial_compare_func); | |
1643 | if (!j->directories_by_wd) | |
1644 | return -ENOMEM; | |
50f20cfd | 1645 | } |
a963990f LP |
1646 | |
1647 | return 0; | |
50f20cfd LP |
1648 | } |
1649 | ||
7827b1a1 | 1650 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1651 | sd_journal *j; |
50f20cfd | 1652 | |
a963990f LP |
1653 | j = new0(sd_journal, 1); |
1654 | if (!j) | |
1655 | return NULL; | |
50f20cfd | 1656 | |
a963990f LP |
1657 | j->inotify_fd = -1; |
1658 | j->flags = flags; | |
93b73b06 | 1659 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1660 | |
7827b1a1 LP |
1661 | if (path) { |
1662 | j->path = strdup(path); | |
6180fc61 ZJS |
1663 | if (!j->path) |
1664 | goto fail; | |
7827b1a1 LP |
1665 | } |
1666 | ||
a963990f | 1667 | j->files = hashmap_new(string_hash_func, string_compare_func); |
a963990f | 1668 | j->directories_by_path = hashmap_new(string_hash_func, string_compare_func); |
84168d80 | 1669 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1670 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1671 | goto fail; |
16e9f408 | 1672 | |
a963990f | 1673 | return j; |
6180fc61 ZJS |
1674 | |
1675 | fail: | |
1676 | sd_journal_close(j); | |
1677 | return NULL; | |
50f20cfd LP |
1678 | } |
1679 | ||
a5344d2c | 1680 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1681 | sd_journal *j; |
3fbf9cbb | 1682 | int r; |
87d2c1ff | 1683 | |
a5344d2c LP |
1684 | if (!ret) |
1685 | return -EINVAL; | |
1686 | ||
1687 | if (flags & ~(SD_JOURNAL_LOCAL_ONLY| | |
1688 | SD_JOURNAL_RUNTIME_ONLY| | |
a688baa8 ZJS |
1689 | SD_JOURNAL_SYSTEM| |
1690 | SD_JOURNAL_CURRENT_USER)) | |
a5344d2c | 1691 | return -EINVAL; |
87d2c1ff | 1692 | |
7827b1a1 | 1693 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1694 | if (!j) |
1695 | return -ENOMEM; | |
1696 | ||
a963990f LP |
1697 | r = add_search_paths(j); |
1698 | if (r < 0) | |
50f20cfd | 1699 | goto fail; |
50f20cfd | 1700 | |
a963990f LP |
1701 | *ret = j; |
1702 | return 0; | |
cf244689 | 1703 | |
a963990f LP |
1704 | fail: |
1705 | sd_journal_close(j); | |
87d2c1ff | 1706 | |
a963990f LP |
1707 | return r; |
1708 | } | |
50f20cfd | 1709 | |
a963990f LP |
1710 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1711 | sd_journal *j; | |
1712 | int r; | |
87d2c1ff | 1713 | |
a963990f LP |
1714 | if (!ret) |
1715 | return -EINVAL; | |
87d2c1ff | 1716 | |
8cb17a6d | 1717 | if (!path) |
a963990f | 1718 | return -EINVAL; |
87d2c1ff | 1719 | |
a963990f LP |
1720 | if (flags != 0) |
1721 | return -EINVAL; | |
87d2c1ff | 1722 | |
7827b1a1 | 1723 | j = journal_new(flags, path); |
a963990f LP |
1724 | if (!j) |
1725 | return -ENOMEM; | |
3fbf9cbb | 1726 | |
a963990f | 1727 | r = add_root_directory(j, path); |
6fe391c5 | 1728 | if (r < 0) { |
3ac251b8 | 1729 | set_put_error(j, r); |
a963990f | 1730 | goto fail; |
6fe391c5 | 1731 | } |
87d2c1ff LP |
1732 | |
1733 | *ret = j; | |
1734 | return 0; | |
1735 | ||
1736 | fail: | |
1737 | sd_journal_close(j); | |
1738 | ||
1739 | return r; | |
a963990f | 1740 | } |
87d2c1ff | 1741 | |
5302ebe1 ZJS |
1742 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1743 | sd_journal *j; | |
1744 | const char **path; | |
1745 | int r; | |
1746 | ||
1747 | if (!ret) | |
1748 | return -EINVAL; | |
1749 | ||
1750 | if (flags != 0) | |
1751 | return -EINVAL; | |
1752 | ||
1753 | j = journal_new(flags, NULL); | |
1754 | if (!j) | |
1755 | return -ENOMEM; | |
1756 | ||
1757 | STRV_FOREACH(path, paths) { | |
1758 | r = add_any_file(j, *path); | |
1759 | if (r < 0) { | |
1760 | log_error("Failed to open %s: %s", *path, strerror(-r)); | |
1761 | goto fail; | |
1762 | } | |
1763 | } | |
1764 | ||
1765 | j->no_new_files = true; | |
1766 | ||
1767 | *ret = j; | |
1768 | return 0; | |
1769 | ||
1770 | fail: | |
1771 | sd_journal_close(j); | |
1772 | ||
1773 | return r; | |
1774 | } | |
1775 | ||
a5344d2c | 1776 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1777 | Directory *d; |
1778 | JournalFile *f; | |
1779 | ||
a5344d2c LP |
1780 | if (!j) |
1781 | return; | |
87d2c1ff | 1782 | |
54b1da83 LP |
1783 | sd_journal_flush_matches(j); |
1784 | ||
a963990f LP |
1785 | while ((f = hashmap_steal_first(j->files))) |
1786 | journal_file_close(f); | |
50f20cfd | 1787 | |
a963990f | 1788 | hashmap_free(j->files); |
260a2be4 | 1789 | |
a963990f LP |
1790 | while ((d = hashmap_first(j->directories_by_path))) |
1791 | remove_directory(j, d); | |
260a2be4 | 1792 | |
a963990f LP |
1793 | while ((d = hashmap_first(j->directories_by_wd))) |
1794 | remove_directory(j, d); | |
87d2c1ff | 1795 | |
a963990f LP |
1796 | hashmap_free(j->directories_by_path); |
1797 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1798 | |
50f20cfd LP |
1799 | if (j->inotify_fd >= 0) |
1800 | close_nointr_nofail(j->inotify_fd); | |
1801 | ||
16e9f408 LP |
1802 | if (j->mmap) |
1803 | mmap_cache_unref(j->mmap); | |
1804 | ||
7827b1a1 | 1805 | free(j->path); |
3c1668da | 1806 | free(j->unique_field); |
6fe391c5 | 1807 | set_free(j->errors); |
87d2c1ff LP |
1808 | free(j); |
1809 | } | |
3fbf9cbb | 1810 | |
a5344d2c | 1811 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1812 | Object *o; |
1813 | JournalFile *f; | |
1814 | int r; | |
1815 | ||
a5344d2c LP |
1816 | if (!j) |
1817 | return -EINVAL; | |
1818 | if (!ret) | |
1819 | return -EINVAL; | |
3fbf9cbb LP |
1820 | |
1821 | f = j->current_file; | |
1822 | if (!f) | |
de190aef | 1823 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1824 | |
1825 | if (f->current_offset <= 0) | |
de190aef | 1826 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1827 | |
de190aef | 1828 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1829 | if (r < 0) |
1830 | return r; | |
1831 | ||
1832 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1833 | return 0; |
3fbf9cbb LP |
1834 | } |
1835 | ||
a5344d2c | 1836 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1837 | Object *o; |
1838 | JournalFile *f; | |
1839 | int r; | |
1840 | sd_id128_t id; | |
1841 | ||
a5344d2c LP |
1842 | if (!j) |
1843 | return -EINVAL; | |
3fbf9cbb LP |
1844 | |
1845 | f = j->current_file; | |
1846 | if (!f) | |
de190aef | 1847 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1848 | |
1849 | if (f->current_offset <= 0) | |
de190aef | 1850 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1851 | |
de190aef | 1852 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1853 | if (r < 0) |
1854 | return r; | |
1855 | ||
de190aef LP |
1856 | if (ret_boot_id) |
1857 | *ret_boot_id = o->entry.boot_id; | |
1858 | else { | |
1859 | r = sd_id128_get_boot(&id); | |
1860 | if (r < 0) | |
1861 | return r; | |
3fbf9cbb | 1862 | |
de190aef | 1863 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1864 | return -ESTALE; |
de190aef | 1865 | } |
3fbf9cbb | 1866 | |
14a65d65 LP |
1867 | if (ret) |
1868 | *ret = le64toh(o->entry.monotonic); | |
1869 | ||
de190aef | 1870 | return 0; |
3fbf9cbb LP |
1871 | } |
1872 | ||
362a3f81 LP |
1873 | static bool field_is_valid(const char *field) { |
1874 | const char *p; | |
1875 | ||
1876 | assert(field); | |
1877 | ||
1878 | if (isempty(field)) | |
1879 | return false; | |
1880 | ||
1881 | if (startswith(field, "__")) | |
1882 | return false; | |
1883 | ||
1884 | for (p = field; *p; p++) { | |
1885 | ||
1886 | if (*p == '_') | |
1887 | continue; | |
1888 | ||
1889 | if (*p >= 'A' && *p <= 'Z') | |
1890 | continue; | |
1891 | ||
1892 | if (*p >= '0' && *p <= '9') | |
1893 | continue; | |
1894 | ||
1895 | return false; | |
1896 | } | |
1897 | ||
1898 | return true; | |
1899 | } | |
1900 | ||
a5344d2c | 1901 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1902 | JournalFile *f; |
1903 | uint64_t i, n; | |
1904 | size_t field_length; | |
1905 | int r; | |
1906 | Object *o; | |
1907 | ||
a5344d2c LP |
1908 | if (!j) |
1909 | return -EINVAL; | |
1910 | if (!field) | |
1911 | return -EINVAL; | |
1912 | if (!data) | |
1913 | return -EINVAL; | |
1914 | if (!size) | |
1915 | return -EINVAL; | |
3fbf9cbb | 1916 | |
362a3f81 | 1917 | if (!field_is_valid(field)) |
3fbf9cbb LP |
1918 | return -EINVAL; |
1919 | ||
1920 | f = j->current_file; | |
1921 | if (!f) | |
de190aef | 1922 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1923 | |
1924 | if (f->current_offset <= 0) | |
de190aef | 1925 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1926 | |
de190aef | 1927 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1928 | if (r < 0) |
1929 | return r; | |
1930 | ||
1931 | field_length = strlen(field); | |
1932 | ||
1933 | n = journal_file_entry_n_items(o); | |
1934 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1935 | uint64_t p, l; |
1936 | le64_t le_hash; | |
3fbf9cbb LP |
1937 | size_t t; |
1938 | ||
1939 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1940 | le_hash = o->entry.items[i].hash; |
de190aef | 1941 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1942 | if (r < 0) |
1943 | return r; | |
1944 | ||
de190aef | 1945 | if (le_hash != o->data.hash) |
de7b95cd LP |
1946 | return -EBADMSG; |
1947 | ||
3fbf9cbb LP |
1948 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1949 | ||
807e17f0 LP |
1950 | if (o->object.flags & OBJECT_COMPRESSED) { |
1951 | ||
1952 | #ifdef HAVE_XZ | |
1953 | if (uncompress_startswith(o->data.payload, l, | |
1954 | &f->compress_buffer, &f->compress_buffer_size, | |
1955 | field, field_length, '=')) { | |
1956 | ||
1957 | uint64_t rsize; | |
1958 | ||
1959 | if (!uncompress_blob(o->data.payload, l, | |
93b73b06 LP |
1960 | &f->compress_buffer, &f->compress_buffer_size, &rsize, |
1961 | j->data_threshold)) | |
807e17f0 LP |
1962 | return -EBADMSG; |
1963 | ||
1964 | *data = f->compress_buffer; | |
1965 | *size = (size_t) rsize; | |
1966 | ||
1967 | return 0; | |
1968 | } | |
1969 | #else | |
1970 | return -EPROTONOSUPPORT; | |
1971 | #endif | |
1972 | ||
1973 | } else if (l >= field_length+1 && | |
1974 | memcmp(o->data.payload, field, field_length) == 0 && | |
1975 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1976 | |
161e54f8 | 1977 | t = (size_t) l; |
3fbf9cbb | 1978 | |
161e54f8 LP |
1979 | if ((uint64_t) t != l) |
1980 | return -E2BIG; | |
3fbf9cbb | 1981 | |
161e54f8 LP |
1982 | *data = o->data.payload; |
1983 | *size = t; | |
3fbf9cbb | 1984 | |
99613ec5 | 1985 | return 0; |
161e54f8 | 1986 | } |
3fbf9cbb | 1987 | |
de190aef | 1988 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1989 | if (r < 0) |
1990 | return r; | |
3fbf9cbb LP |
1991 | } |
1992 | ||
de190aef | 1993 | return -ENOENT; |
3fbf9cbb LP |
1994 | } |
1995 | ||
93b73b06 | 1996 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
1997 | size_t t; |
1998 | uint64_t l; | |
1999 | ||
2000 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2001 | t = (size_t) l; | |
2002 | ||
2003 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2004 | if ((uint64_t) t != l) | |
2005 | return -E2BIG; | |
2006 | ||
2007 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2008 | #ifdef HAVE_XZ | |
2009 | uint64_t rsize; | |
2010 | ||
93b73b06 | 2011 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, j->data_threshold)) |
3c1668da LP |
2012 | return -EBADMSG; |
2013 | ||
2014 | *data = f->compress_buffer; | |
2015 | *size = (size_t) rsize; | |
2016 | #else | |
2017 | return -EPROTONOSUPPORT; | |
2018 | #endif | |
2019 | } else { | |
2020 | *data = o->data.payload; | |
2021 | *size = t; | |
2022 | } | |
2023 | ||
2024 | return 0; | |
2025 | } | |
2026 | ||
a5344d2c | 2027 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2028 | JournalFile *f; |
3c1668da | 2029 | uint64_t p, n; |
4fd052ae | 2030 | le64_t le_hash; |
3fbf9cbb LP |
2031 | int r; |
2032 | Object *o; | |
2033 | ||
a5344d2c LP |
2034 | if (!j) |
2035 | return -EINVAL; | |
2036 | if (!data) | |
2037 | return -EINVAL; | |
2038 | if (!size) | |
2039 | return -EINVAL; | |
3fbf9cbb LP |
2040 | |
2041 | f = j->current_file; | |
2042 | if (!f) | |
de190aef | 2043 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2044 | |
2045 | if (f->current_offset <= 0) | |
de190aef | 2046 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2047 | |
de190aef | 2048 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2049 | if (r < 0) |
2050 | return r; | |
2051 | ||
2052 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2053 | if (j->current_field >= n) |
3fbf9cbb LP |
2054 | return 0; |
2055 | ||
7210bfb3 | 2056 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2057 | le_hash = o->entry.items[j->current_field].hash; |
2058 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2059 | if (r < 0) |
2060 | return r; | |
2061 | ||
de190aef | 2062 | if (le_hash != o->data.hash) |
de7b95cd LP |
2063 | return -EBADMSG; |
2064 | ||
93b73b06 | 2065 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2066 | if (r < 0) |
2067 | return r; | |
3fbf9cbb | 2068 | |
7210bfb3 | 2069 | j->current_field ++; |
3fbf9cbb LP |
2070 | |
2071 | return 1; | |
2072 | } | |
c2373f84 | 2073 | |
a5344d2c LP |
2074 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2075 | if (!j) | |
2076 | return; | |
8725d60a LP |
2077 | |
2078 | j->current_field = 0; | |
c2373f84 | 2079 | } |
50f20cfd | 2080 | |
a5344d2c | 2081 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2082 | int r; |
2083 | ||
a5344d2c LP |
2084 | if (!j) |
2085 | return -EINVAL; | |
50f20cfd | 2086 | |
a963990f LP |
2087 | if (j->inotify_fd >= 0) |
2088 | return j->inotify_fd; | |
2089 | ||
2090 | r = allocate_inotify(j); | |
2091 | if (r < 0) | |
2092 | return r; | |
2093 | ||
2094 | /* Iterate through all dirs again, to add them to the | |
2095 | * inotify */ | |
5302ebe1 ZJS |
2096 | if (j->no_new_files) |
2097 | r = add_current_paths(j); | |
2098 | else if (j->path) | |
7827b1a1 LP |
2099 | r = add_root_directory(j, j->path); |
2100 | else | |
2101 | r = add_search_paths(j); | |
a963990f LP |
2102 | if (r < 0) |
2103 | return r; | |
2104 | ||
50f20cfd LP |
2105 | return j->inotify_fd; |
2106 | } | |
2107 | ||
ee531d94 LP |
2108 | _public_ int sd_journal_get_events(sd_journal *j) { |
2109 | int fd; | |
2110 | ||
2111 | if (!j) | |
2112 | return -EINVAL; | |
2113 | ||
2114 | fd = sd_journal_get_fd(j); | |
2115 | if (fd < 0) | |
2116 | return fd; | |
2117 | ||
2118 | return POLLIN; | |
2119 | } | |
2120 | ||
39c155ea LP |
2121 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2122 | int fd; | |
2123 | ||
2124 | if (!j) | |
2125 | return -EINVAL; | |
2126 | if (!timeout_usec) | |
2127 | return -EINVAL; | |
2128 | ||
2129 | fd = sd_journal_get_fd(j); | |
2130 | if (fd < 0) | |
2131 | return fd; | |
2132 | ||
2133 | if (!j->on_network) { | |
2134 | *timeout_usec = (uint64_t) -1; | |
2135 | return 0; | |
2136 | } | |
2137 | ||
2138 | /* If we are on the network we need to regularly check for | |
2139 | * changes manually */ | |
2140 | ||
2141 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2142 | return 1; | |
2143 | } | |
2144 | ||
50f20cfd | 2145 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2146 | Directory *d; |
50f20cfd LP |
2147 | int r; |
2148 | ||
2149 | assert(j); | |
2150 | assert(e); | |
2151 | ||
2152 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2153 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2154 | if (d) { | |
2155 | sd_id128_t id; | |
50f20cfd | 2156 | |
de2c3907 LP |
2157 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2158 | (endswith(e->name, ".journal") || | |
2159 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2160 | |
2161 | /* Event for a journal file */ | |
2162 | ||
2163 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2164 | r = add_file(j, d->path, e->name); |
6fe391c5 ZJS |
2165 | if (r < 0) { |
2166 | log_debug("Failed to add file %s/%s: %s", | |
2167 | d->path, e->name, strerror(-r)); | |
3ac251b8 | 2168 | set_put_error(j, r); |
6fe391c5 | 2169 | } |
a963990f | 2170 | |
5e6870ea | 2171 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2172 | |
a963990f | 2173 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2174 | if (r < 0) |
a963990f | 2175 | log_debug("Failed to remove file %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2176 | } |
2177 | ||
a963990f | 2178 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2179 | |
a963990f | 2180 | /* Event for a subdirectory */ |
50f20cfd | 2181 | |
a963990f LP |
2182 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2183 | r = remove_directory(j, d); | |
50f20cfd | 2184 | if (r < 0) |
a963990f | 2185 | log_debug("Failed to remove directory %s: %s", d->path, strerror(-r)); |
50f20cfd LP |
2186 | } |
2187 | ||
50f20cfd | 2188 | |
a963990f | 2189 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2190 | |
a963990f | 2191 | /* Event for root directory */ |
50f20cfd | 2192 | |
a963990f LP |
2193 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2194 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2195 | if (r < 0) |
a963990f | 2196 | log_debug("Failed to add directory %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2197 | } |
2198 | } | |
2199 | ||
2200 | return; | |
2201 | } | |
2202 | ||
2203 | if (e->mask & IN_IGNORED) | |
2204 | return; | |
2205 | ||
2206 | log_warning("Unknown inotify event."); | |
2207 | } | |
2208 | ||
a963990f LP |
2209 | static int determine_change(sd_journal *j) { |
2210 | bool b; | |
2211 | ||
2212 | assert(j); | |
2213 | ||
2214 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2215 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2216 | ||
2217 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2218 | } | |
2219 | ||
a5344d2c | 2220 | _public_ int sd_journal_process(sd_journal *j) { |
19d1e4ee | 2221 | uint8_t buffer[sizeof(struct inotify_event) + FILENAME_MAX] _alignas_(struct inotify_event); |
a963990f | 2222 | bool got_something = false; |
50f20cfd | 2223 | |
a5344d2c LP |
2224 | if (!j) |
2225 | return -EINVAL; | |
50f20cfd | 2226 | |
39c155ea LP |
2227 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2228 | ||
50f20cfd LP |
2229 | for (;;) { |
2230 | struct inotify_event *e; | |
2231 | ssize_t l; | |
2232 | ||
2233 | l = read(j->inotify_fd, buffer, sizeof(buffer)); | |
2234 | if (l < 0) { | |
a963990f LP |
2235 | if (errno == EAGAIN || errno == EINTR) |
2236 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2237 | |
2238 | return -errno; | |
2239 | } | |
2240 | ||
a963990f LP |
2241 | got_something = true; |
2242 | ||
50f20cfd LP |
2243 | e = (struct inotify_event*) buffer; |
2244 | while (l > 0) { | |
2245 | size_t step; | |
2246 | ||
2247 | process_inotify_event(j, e); | |
2248 | ||
2249 | step = sizeof(struct inotify_event) + e->len; | |
2250 | assert(step <= (size_t) l); | |
2251 | ||
2252 | e = (struct inotify_event*) ((uint8_t*) e + step); | |
2253 | l -= step; | |
2254 | } | |
2255 | } | |
a963990f LP |
2256 | |
2257 | return determine_change(j); | |
50f20cfd | 2258 | } |
6ad1d1c3 | 2259 | |
e02d1cf7 | 2260 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2261 | int r; |
39c155ea | 2262 | uint64_t t; |
e02d1cf7 LP |
2263 | |
2264 | assert(j); | |
2265 | ||
a963990f LP |
2266 | if (j->inotify_fd < 0) { |
2267 | ||
2268 | /* This is the first invocation, hence create the | |
2269 | * inotify watch */ | |
2270 | r = sd_journal_get_fd(j); | |
2271 | if (r < 0) | |
2272 | return r; | |
2273 | ||
2274 | /* The journal might have changed since the context | |
2275 | * object was created and we weren't watching before, | |
2276 | * hence don't wait for anything, and return | |
2277 | * immediately. */ | |
2278 | return determine_change(j); | |
2279 | } | |
2280 | ||
39c155ea LP |
2281 | r = sd_journal_get_timeout(j, &t); |
2282 | if (r < 0) | |
2283 | return r; | |
2284 | ||
2285 | if (t != (uint64_t) -1) { | |
2286 | usec_t n; | |
2287 | ||
2288 | n = now(CLOCK_MONOTONIC); | |
2289 | t = t > n ? t - n : 0; | |
85210bff | 2290 | |
39c155ea LP |
2291 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2292 | timeout_usec = t; | |
85210bff LP |
2293 | } |
2294 | ||
a963990f LP |
2295 | do { |
2296 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2297 | } while (r == -EINTR); | |
e02d1cf7 LP |
2298 | |
2299 | if (r < 0) | |
2300 | return r; | |
2301 | ||
a963990f | 2302 | return sd_journal_process(j); |
e02d1cf7 LP |
2303 | } |
2304 | ||
08984293 LP |
2305 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2306 | Iterator i; | |
2307 | JournalFile *f; | |
2308 | bool first = true; | |
2309 | int r; | |
2310 | ||
2311 | if (!j) | |
2312 | return -EINVAL; | |
2313 | if (!from && !to) | |
2314 | return -EINVAL; | |
39887731 TA |
2315 | if (from == to) |
2316 | return -EINVAL; | |
08984293 LP |
2317 | |
2318 | HASHMAP_FOREACH(f, j->files, i) { | |
2319 | usec_t fr, t; | |
2320 | ||
2321 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2322 | if (r == -ENOENT) |
2323 | continue; | |
08984293 LP |
2324 | if (r < 0) |
2325 | return r; | |
2326 | if (r == 0) | |
2327 | continue; | |
2328 | ||
2329 | if (first) { | |
2330 | if (from) | |
2331 | *from = fr; | |
2332 | if (to) | |
2333 | *to = t; | |
2334 | first = false; | |
2335 | } else { | |
2336 | if (from) | |
2337 | *from = MIN(fr, *from); | |
2338 | if (to) | |
0f91dd87 | 2339 | *to = MAX(t, *to); |
08984293 LP |
2340 | } |
2341 | } | |
2342 | ||
2343 | return first ? 0 : 1; | |
2344 | } | |
2345 | ||
2346 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2347 | Iterator i; | |
2348 | JournalFile *f; | |
2349 | bool first = true; | |
2350 | int r; | |
2351 | ||
2352 | if (!j) | |
2353 | return -EINVAL; | |
2354 | if (!from && !to) | |
2355 | return -EINVAL; | |
39887731 TA |
2356 | if (from == to) |
2357 | return -EINVAL; | |
08984293 LP |
2358 | |
2359 | HASHMAP_FOREACH(f, j->files, i) { | |
2360 | usec_t fr, t; | |
2361 | ||
2362 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2363 | if (r == -ENOENT) |
2364 | continue; | |
08984293 LP |
2365 | if (r < 0) |
2366 | return r; | |
2367 | if (r == 0) | |
2368 | continue; | |
2369 | ||
2370 | if (first) { | |
2371 | if (from) | |
2372 | *from = fr; | |
2373 | if (to) | |
2374 | *to = t; | |
2375 | first = false; | |
2376 | } else { | |
2377 | if (from) | |
2378 | *from = MIN(fr, *from); | |
2379 | if (to) | |
0f91dd87 | 2380 | *to = MAX(t, *to); |
08984293 LP |
2381 | } |
2382 | } | |
2383 | ||
2384 | return first ? 0 : 1; | |
2385 | } | |
2386 | ||
dca6219e LP |
2387 | void journal_print_header(sd_journal *j) { |
2388 | Iterator i; | |
2389 | JournalFile *f; | |
2390 | bool newline = false; | |
2391 | ||
2392 | assert(j); | |
2393 | ||
2394 | HASHMAP_FOREACH(f, j->files, i) { | |
2395 | if (newline) | |
2396 | putchar('\n'); | |
2397 | else | |
2398 | newline = true; | |
2399 | ||
2400 | journal_file_print_header(f); | |
2401 | } | |
2402 | } | |
08984293 | 2403 | |
a1a03e30 LP |
2404 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2405 | Iterator i; | |
2406 | JournalFile *f; | |
2407 | uint64_t sum = 0; | |
2408 | ||
2409 | if (!j) | |
2410 | return -EINVAL; | |
2411 | if (!bytes) | |
2412 | return -EINVAL; | |
2413 | ||
2414 | HASHMAP_FOREACH(f, j->files, i) { | |
2415 | struct stat st; | |
2416 | ||
2417 | if (fstat(f->fd, &st) < 0) | |
2418 | return -errno; | |
2419 | ||
2420 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2421 | } | |
2422 | ||
2423 | *bytes = sum; | |
2424 | return 0; | |
2425 | } | |
2426 | ||
3c1668da LP |
2427 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2428 | char *f; | |
2429 | ||
2430 | if (!j) | |
2431 | return -EINVAL; | |
2432 | if (isempty(field)) | |
2433 | return -EINVAL; | |
d5c4ed62 LP |
2434 | if (!field_is_valid(field)) |
2435 | return -EINVAL; | |
3c1668da LP |
2436 | |
2437 | f = strdup(field); | |
2438 | if (!f) | |
2439 | return -ENOMEM; | |
2440 | ||
2441 | free(j->unique_field); | |
2442 | j->unique_field = f; | |
2443 | j->unique_file = NULL; | |
2444 | j->unique_offset = 0; | |
2445 | ||
2446 | return 0; | |
2447 | } | |
2448 | ||
2449 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
2450 | Object *o; | |
2451 | size_t k; | |
2452 | int r; | |
19a2bd80 | 2453 | |
3c1668da LP |
2454 | if (!j) |
2455 | return -EINVAL; | |
2456 | if (!data) | |
2457 | return -EINVAL; | |
2458 | if (!l) | |
2459 | return -EINVAL; | |
2460 | if (!j->unique_field) | |
2461 | return -EINVAL; | |
19a2bd80 | 2462 | |
3c1668da | 2463 | k = strlen(j->unique_field); |
19a2bd80 | 2464 | |
3c1668da LP |
2465 | if (!j->unique_file) { |
2466 | j->unique_file = hashmap_first(j->files); | |
2467 | if (!j->unique_file) | |
2468 | return 0; | |
2469 | j->unique_offset = 0; | |
2470 | } | |
19a2bd80 | 2471 | |
3c1668da LP |
2472 | for (;;) { |
2473 | JournalFile *of; | |
2474 | Iterator i; | |
2475 | const void *odata; | |
2476 | size_t ol; | |
2477 | bool found; | |
2478 | ||
bdc02927 | 2479 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2480 | if (j->unique_offset == 0) { |
2481 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2482 | if (r < 0) | |
2483 | return r; | |
2484 | ||
2485 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2486 | } else { | |
2487 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2488 | if (r < 0) | |
2489 | return r; | |
2490 | ||
2491 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2492 | } | |
2493 | ||
2494 | /* We reached the end of the list? Then start again, with the next file */ | |
2495 | if (j->unique_offset == 0) { | |
2496 | JournalFile *n; | |
2497 | ||
2498 | n = hashmap_next(j->files, j->unique_file->path); | |
2499 | if (!n) | |
2500 | return 0; | |
2501 | ||
2502 | j->unique_file = n; | |
2503 | continue; | |
2504 | } | |
2505 | ||
2506 | /* We do not use the type context here, but 0 instead, | |
2507 | * so that we can look at this data object at the same | |
2508 | * time as one on another file */ | |
2509 | r = journal_file_move_to_object(j->unique_file, 0, j->unique_offset, &o); | |
2510 | if (r < 0) | |
2511 | return r; | |
2512 | ||
2513 | /* Let's do the type check by hand, since we used 0 context above. */ | |
2514 | if (o->object.type != OBJECT_DATA) | |
2515 | return -EBADMSG; | |
2516 | ||
93b73b06 | 2517 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2518 | if (r < 0) |
2519 | return r; | |
2520 | ||
2521 | /* OK, now let's see if we already returned this data | |
2522 | * object by checking if it exists in the earlier | |
2523 | * traversed files. */ | |
2524 | found = false; | |
2525 | HASHMAP_FOREACH(of, j->files, i) { | |
2526 | Object *oo; | |
2527 | uint64_t op; | |
2528 | ||
2529 | if (of == j->unique_file) | |
2530 | break; | |
2531 | ||
2532 | /* Skip this file it didn't have any fields | |
2533 | * indexed */ | |
2534 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2535 | le64toh(of->header->n_fields) <= 0) | |
2536 | continue; | |
2537 | ||
2538 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2539 | if (r < 0) | |
2540 | return r; | |
2541 | ||
2542 | if (r > 0) | |
2543 | found = true; | |
2544 | } | |
2545 | ||
2546 | if (found) | |
2547 | continue; | |
2548 | ||
93b73b06 | 2549 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2550 | if (r < 0) |
2551 | return r; | |
2552 | ||
2553 | return 1; | |
2554 | } | |
2555 | } | |
2556 | ||
115646c7 | 2557 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2558 | if (!j) |
2559 | return; | |
2560 | ||
2561 | j->unique_file = NULL; | |
2562 | j->unique_offset = 0; | |
2563 | } | |
85210bff LP |
2564 | |
2565 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
2566 | if (!j) | |
2567 | return -EINVAL; | |
2568 | ||
2569 | return !j->on_network; | |
2570 | } | |
d4205751 LP |
2571 | |
2572 | static char *lookup_field(const char *field, void *userdata) { | |
2573 | sd_journal *j = userdata; | |
2574 | const void *data; | |
2575 | size_t size, d; | |
2576 | int r; | |
2577 | ||
2578 | assert(field); | |
2579 | assert(j); | |
2580 | ||
2581 | r = sd_journal_get_data(j, field, &data, &size); | |
2582 | if (r < 0 || | |
2583 | size > REPLACE_VAR_MAX) | |
2584 | return strdup(field); | |
2585 | ||
2586 | d = strlen(field) + 1; | |
2587 | ||
2588 | return strndup((const char*) data + d, size - d); | |
2589 | } | |
2590 | ||
2591 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2592 | const void *data; | |
2593 | size_t size; | |
2594 | sd_id128_t id; | |
2595 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2596 | char *t; | |
2597 | int r; | |
2598 | ||
2599 | if (!j) | |
2600 | return -EINVAL; | |
2601 | if (!ret) | |
2602 | return -EINVAL; | |
2603 | ||
2604 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2605 | if (r < 0) | |
2606 | return r; | |
2607 | ||
2608 | cid = strndup((const char*) data + 11, size - 11); | |
2609 | if (!cid) | |
2610 | return -ENOMEM; | |
2611 | ||
2612 | r = sd_id128_from_string(cid, &id); | |
2613 | if (r < 0) | |
2614 | return r; | |
2615 | ||
844ec79b | 2616 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2617 | if (r < 0) |
2618 | return r; | |
2619 | ||
2620 | t = replace_var(text, lookup_field, j); | |
2621 | if (!t) | |
2622 | return -ENOMEM; | |
2623 | ||
2624 | *ret = t; | |
2625 | return 0; | |
2626 | } | |
8f1e860f LP |
2627 | |
2628 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
2629 | if (!ret) | |
2630 | return -EINVAL; | |
2631 | ||
844ec79b | 2632 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2633 | } |
93b73b06 LP |
2634 | |
2635 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
2636 | if (!j) | |
2637 | return -EINVAL; | |
2638 | ||
2639 | j->data_threshold = sz; | |
2640 | return 0; | |
2641 | } | |
2642 | ||
2643 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
2644 | if (!j) | |
2645 | return -EINVAL; | |
2646 | if (!sz) | |
2647 | return -EINVAL; | |
2648 | ||
2649 | *sz = j->data_threshold; | |
2650 | return 0; | |
2651 | } |