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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 | ||
a65f06bb ZJS |
53 | static bool journal_pid_changed(sd_journal *j) { |
54 | assert(j); | |
55 | ||
56 | /* We don't support people creating a journal object and | |
57 | * keeping it around over a fork(). Let's complain. */ | |
58 | ||
59 | return j->original_pid != getpid(); | |
60 | } | |
61 | ||
6fe391c5 ZJS |
62 | /* We return an error here only if we didn't manage to |
63 | memorize the real error. */ | |
3ac251b8 LP |
64 | static int set_put_error(sd_journal *j, int r) { |
65 | int k; | |
66 | ||
6fe391c5 ZJS |
67 | if (r >= 0) |
68 | return r; | |
69 | ||
3ac251b8 LP |
70 | k = set_ensure_allocated(&j->errors, trivial_hash_func, trivial_compare_func); |
71 | if (k < 0) | |
72 | return k; | |
73 | ||
74 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
75 | } |
76 | ||
de190aef | 77 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
78 | Iterator i; |
79 | JournalFile *f; | |
80 | ||
81 | assert(j); | |
82 | ||
83 | j->current_file = NULL; | |
84 | j->current_field = 0; | |
85 | ||
86 | HASHMAP_FOREACH(f, j->files, i) | |
87 | f->current_offset = 0; | |
88 | } | |
89 | ||
de190aef LP |
90 | static void reset_location(sd_journal *j) { |
91 | assert(j); | |
92 | ||
93 | detach_location(j); | |
94 | zero(j->current_location); | |
95 | } | |
96 | ||
a87247dd | 97 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 98 | assert(l); |
a87247dd | 99 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
100 | assert(f); |
101 | assert(o->object.type == OBJECT_ENTRY); | |
102 | ||
a87247dd | 103 | l->type = type; |
de190aef LP |
104 | l->seqnum = le64toh(o->entry.seqnum); |
105 | l->seqnum_id = f->header->seqnum_id; | |
106 | l->realtime = le64toh(o->entry.realtime); | |
107 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 108 | l->boot_id = o->entry.boot_id; |
de190aef LP |
109 | l->xor_hash = le64toh(o->entry.xor_hash); |
110 | ||
111 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
112 | } | |
113 | ||
87011c25 ZJS |
114 | static void set_location(sd_journal *j, LocationType type, JournalFile *f, Object *o, |
115 | direction_t direction, uint64_t offset) { | |
de190aef | 116 | assert(j); |
a87247dd | 117 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
118 | assert(f); |
119 | assert(o); | |
120 | ||
a87247dd | 121 | init_location(&j->current_location, type, f, o); |
de190aef LP |
122 | |
123 | j->current_file = f; | |
124 | j->current_field = 0; | |
125 | ||
87011c25 | 126 | f->last_direction = direction; |
de190aef LP |
127 | f->current_offset = offset; |
128 | } | |
129 | ||
cbdca852 LP |
130 | static int match_is_valid(const void *data, size_t size) { |
131 | const char *b, *p; | |
132 | ||
133 | assert(data); | |
134 | ||
135 | if (size < 2) | |
136 | return false; | |
137 | ||
138 | if (startswith(data, "__")) | |
139 | return false; | |
140 | ||
141 | b = data; | |
142 | for (p = b; p < b + size; p++) { | |
143 | ||
144 | if (*p == '=') | |
145 | return p > b; | |
146 | ||
147 | if (*p == '_') | |
148 | continue; | |
149 | ||
150 | if (*p >= 'A' && *p <= 'Z') | |
151 | continue; | |
152 | ||
153 | if (*p >= '0' && *p <= '9') | |
154 | continue; | |
155 | ||
156 | return false; | |
157 | } | |
158 | ||
159 | return false; | |
160 | } | |
161 | ||
162 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
163 | const uint8_t *a = _a, *b = _b; |
164 | size_t j; | |
de190aef LP |
165 | |
166 | for (j = 0; j < s && j < t; j++) { | |
167 | ||
de190aef | 168 | if (a[j] != b[j]) |
cbdca852 | 169 | return false; |
de190aef | 170 | |
cbdca852 LP |
171 | if (a[j] == '=') |
172 | return true; | |
de190aef LP |
173 | } |
174 | ||
bc302926 | 175 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
176 | } |
177 | ||
178 | static Match *match_new(Match *p, MatchType t) { | |
179 | Match *m; | |
180 | ||
181 | m = new0(Match, 1); | |
182 | if (!m) | |
183 | return NULL; | |
184 | ||
185 | m->type = t; | |
186 | ||
187 | if (p) { | |
188 | m->parent = p; | |
189 | LIST_PREPEND(Match, matches, p->matches, m); | |
190 | } | |
191 | ||
192 | return m; | |
193 | } | |
194 | ||
195 | static void match_free(Match *m) { | |
196 | assert(m); | |
197 | ||
198 | while (m->matches) | |
199 | match_free(m->matches); | |
200 | ||
201 | if (m->parent) | |
202 | LIST_REMOVE(Match, matches, m->parent->matches, m); | |
203 | ||
204 | free(m->data); | |
205 | free(m); | |
206 | } | |
207 | ||
208 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 209 | if (!m || m->matches) |
cbdca852 LP |
210 | return; |
211 | ||
212 | match_free(m); | |
de190aef LP |
213 | } |
214 | ||
a5344d2c | 215 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 216 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 217 | le64_t le_hash; |
87d2c1ff | 218 | |
a5344d2c LP |
219 | if (!j) |
220 | return -EINVAL; | |
a65f06bb ZJS |
221 | if (journal_pid_changed(j)) |
222 | return -ECHILD; | |
cbdca852 | 223 | |
a5344d2c LP |
224 | if (!data) |
225 | return -EINVAL; | |
cbdca852 LP |
226 | |
227 | if (size == 0) | |
228 | size = strlen(data); | |
229 | ||
230 | if (!match_is_valid(data, size)) | |
1cc101f1 LP |
231 | return -EINVAL; |
232 | ||
cd34b3c6 HH |
233 | /* level 0: AND term |
234 | * level 1: OR terms | |
235 | * level 2: AND terms | |
236 | * level 3: OR terms | |
237 | * level 4: concrete matches */ | |
cbdca852 LP |
238 | |
239 | if (!j->level0) { | |
cd34b3c6 | 240 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
241 | if (!j->level0) |
242 | return -ENOMEM; | |
243 | } | |
244 | ||
245 | if (!j->level1) { | |
cd34b3c6 | 246 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
247 | if (!j->level1) |
248 | return -ENOMEM; | |
249 | } | |
250 | ||
cd34b3c6 HH |
251 | if (!j->level2) { |
252 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
253 | if (!j->level2) | |
254 | return -ENOMEM; | |
255 | } | |
256 | ||
257 | assert(j->level0->type == MATCH_AND_TERM); | |
258 | assert(j->level1->type == MATCH_OR_TERM); | |
259 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 260 | |
de190aef LP |
261 | le_hash = htole64(hash64(data, size)); |
262 | ||
cd34b3c6 HH |
263 | LIST_FOREACH(matches, l3, j->level2->matches) { |
264 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 265 | |
cd34b3c6 HH |
266 | LIST_FOREACH(matches, l4, l3->matches) { |
267 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 268 | |
cbdca852 LP |
269 | /* Exactly the same match already? Then ignore |
270 | * this addition */ | |
cd34b3c6 HH |
271 | if (l4->le_hash == le_hash && |
272 | l4->size == size && | |
273 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
274 | return 0; |
275 | ||
276 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
277 | if (same_field(data, size, l4->data, l4->size)) { |
278 | add_here = l3; | |
cbdca852 LP |
279 | break; |
280 | } | |
281 | } | |
282 | ||
283 | if (add_here) | |
284 | break; | |
de190aef LP |
285 | } |
286 | ||
cbdca852 | 287 | if (!add_here) { |
cd34b3c6 | 288 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
289 | if (!add_here) |
290 | goto fail; | |
291 | } | |
292 | ||
293 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 294 | if (!m) |
cbdca852 | 295 | goto fail; |
87d2c1ff | 296 | |
cbdca852 | 297 | m->le_hash = le_hash; |
1cc101f1 | 298 | m->size = size; |
cbdca852 LP |
299 | m->data = memdup(data, size); |
300 | if (!m->data) | |
301 | goto fail; | |
302 | ||
303 | detach_location(j); | |
304 | ||
305 | return 0; | |
306 | ||
307 | fail: | |
c5a10d9c ZJS |
308 | match_free_if_empty(add_here); |
309 | match_free_if_empty(j->level2); | |
310 | match_free_if_empty(j->level1); | |
311 | match_free_if_empty(j->level0); | |
cbdca852 LP |
312 | |
313 | return -ENOMEM; | |
314 | } | |
315 | ||
cd34b3c6 | 316 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
a65f06bb ZJS |
317 | if (!j) |
318 | return -EINVAL; | |
319 | if (journal_pid_changed(j)) | |
320 | return -ECHILD; | |
1cc101f1 | 321 | |
cbdca852 LP |
322 | if (!j->level0) |
323 | return 0; | |
324 | ||
325 | if (!j->level1) | |
326 | return 0; | |
327 | ||
328 | if (!j->level1->matches) | |
329 | return 0; | |
330 | ||
cd34b3c6 HH |
331 | j->level1 = NULL; |
332 | j->level2 = NULL; | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
a65f06bb ZJS |
338 | if (!j) |
339 | return -EINVAL; | |
340 | if (journal_pid_changed(j)) | |
341 | return -ECHILD; | |
cd34b3c6 HH |
342 | |
343 | if (!j->level0) | |
344 | return 0; | |
345 | ||
346 | if (!j->level1) | |
347 | return 0; | |
348 | ||
349 | if (!j->level2) | |
350 | return 0; | |
351 | ||
352 | if (!j->level2->matches) | |
353 | return 0; | |
cbdca852 | 354 | |
cd34b3c6 | 355 | j->level2 = NULL; |
cbdca852 LP |
356 | return 0; |
357 | } | |
358 | ||
359 | static char *match_make_string(Match *m) { | |
360 | char *p, *r; | |
361 | Match *i; | |
362 | bool enclose = false; | |
363 | ||
364 | if (!m) | |
365 | return strdup(""); | |
366 | ||
367 | if (m->type == MATCH_DISCRETE) | |
368 | return strndup(m->data, m->size); | |
369 | ||
370 | p = NULL; | |
371 | LIST_FOREACH(matches, i, m->matches) { | |
372 | char *t, *k; | |
373 | ||
374 | t = match_make_string(i); | |
375 | if (!t) { | |
376 | free(p); | |
377 | return NULL; | |
378 | } | |
379 | ||
380 | if (p) { | |
b7def684 | 381 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
382 | free(p); |
383 | free(t); | |
384 | ||
385 | if (!k) | |
386 | return NULL; | |
387 | ||
388 | p = k; | |
389 | ||
390 | enclose = true; | |
bc302926 | 391 | } else |
cbdca852 | 392 | p = t; |
87d2c1ff LP |
393 | } |
394 | ||
cbdca852 | 395 | if (enclose) { |
b7def684 | 396 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
397 | free(p); |
398 | return r; | |
399 | } | |
87d2c1ff | 400 | |
cbdca852 LP |
401 | return p; |
402 | } | |
de7b95cd | 403 | |
cbdca852 LP |
404 | char *journal_make_match_string(sd_journal *j) { |
405 | assert(j); | |
8f9b6cd9 | 406 | |
cbdca852 | 407 | return match_make_string(j->level0); |
87d2c1ff LP |
408 | } |
409 | ||
a5344d2c LP |
410 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
411 | if (!j) | |
412 | return; | |
87d2c1ff | 413 | |
cbdca852 LP |
414 | if (j->level0) |
415 | match_free(j->level0); | |
de7b95cd | 416 | |
cd34b3c6 | 417 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 418 | |
de190aef | 419 | detach_location(j); |
87d2c1ff LP |
420 | } |
421 | ||
468b21de | 422 | static int compare_entry_order(JournalFile *af, Object *_ao, |
5afbe712 | 423 | JournalFile *bf, uint64_t bp) { |
87d2c1ff | 424 | |
cec736d2 | 425 | uint64_t a, b; |
468b21de LP |
426 | Object *ao, *bo; |
427 | int r; | |
87d2c1ff | 428 | |
de190aef | 429 | assert(af); |
de190aef | 430 | assert(bf); |
468b21de LP |
431 | assert(_ao); |
432 | ||
433 | /* The mmap cache might invalidate the object from the first | |
434 | * file if we look at the one from the second file. Hence | |
435 | * temporarily copy the header of the first one, and look at | |
436 | * that only. */ | |
437 | ao = alloca(offsetof(EntryObject, items)); | |
438 | memcpy(ao, _ao, offsetof(EntryObject, items)); | |
439 | ||
440 | r = journal_file_move_to_object(bf, OBJECT_ENTRY, bp, &bo); | |
441 | if (r < 0) | |
442 | return strcmp(af->path, bf->path); | |
de190aef | 443 | |
ae2cc8ef | 444 | /* We operate on two different files here, hence we can access |
1cc101f1 LP |
445 | * two objects at the same time, which we normally can't. |
446 | * | |
447 | * If contents and timestamps match, these entries are | |
448 | * identical, even if the seqnum does not match */ | |
449 | ||
450 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id) && | |
451 | ao->entry.monotonic == bo->entry.monotonic && | |
452 | ao->entry.realtime == bo->entry.realtime && | |
453 | ao->entry.xor_hash == bo->entry.xor_hash) | |
454 | return 0; | |
ae2cc8ef | 455 | |
cec736d2 | 456 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { |
87d2c1ff | 457 | |
cec736d2 LP |
458 | /* If this is from the same seqnum source, compare |
459 | * seqnums */ | |
460 | a = le64toh(ao->entry.seqnum); | |
461 | b = le64toh(bo->entry.seqnum); | |
87d2c1ff | 462 | |
ae2cc8ef LP |
463 | if (a < b) |
464 | return -1; | |
465 | if (a > b) | |
466 | return 1; | |
1cc101f1 LP |
467 | |
468 | /* Wow! This is weird, different data but the same | |
469 | * seqnums? Something is borked, but let's make the | |
470 | * best of it and compare by time. */ | |
ae2cc8ef | 471 | } |
87d2c1ff | 472 | |
ae2cc8ef | 473 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id)) { |
87d2c1ff | 474 | |
cec736d2 LP |
475 | /* If the boot id matches compare monotonic time */ |
476 | a = le64toh(ao->entry.monotonic); | |
477 | b = le64toh(bo->entry.monotonic); | |
87d2c1ff | 478 | |
ae2cc8ef LP |
479 | if (a < b) |
480 | return -1; | |
481 | if (a > b) | |
482 | return 1; | |
87d2c1ff LP |
483 | } |
484 | ||
ae2cc8ef LP |
485 | /* Otherwise compare UTC time */ |
486 | a = le64toh(ao->entry.realtime); | |
c4aff78b | 487 | b = le64toh(bo->entry.realtime); |
ae2cc8ef LP |
488 | |
489 | if (a < b) | |
490 | return -1; | |
491 | if (a > b) | |
492 | return 1; | |
493 | ||
494 | /* Finally, compare by contents */ | |
495 | a = le64toh(ao->entry.xor_hash); | |
c4aff78b | 496 | b = le64toh(bo->entry.xor_hash); |
ae2cc8ef LP |
497 | |
498 | if (a < b) | |
499 | return -1; | |
500 | if (a > b) | |
501 | return 1; | |
502 | ||
503 | return 0; | |
87d2c1ff LP |
504 | } |
505 | ||
44a6b1b6 | 506 | _pure_ static int compare_with_location(JournalFile *af, Object *ao, Location *l) { |
de190aef LP |
507 | uint64_t a; |
508 | ||
509 | assert(af); | |
510 | assert(ao); | |
511 | assert(l); | |
a87247dd | 512 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
513 | |
514 | if (l->monotonic_set && | |
515 | sd_id128_equal(ao->entry.boot_id, l->boot_id) && | |
516 | l->realtime_set && | |
517 | le64toh(ao->entry.realtime) == l->realtime && | |
518 | l->xor_hash_set && | |
519 | le64toh(ao->entry.xor_hash) == l->xor_hash) | |
520 | return 0; | |
521 | ||
522 | if (l->seqnum_set && | |
523 | sd_id128_equal(af->header->seqnum_id, l->seqnum_id)) { | |
524 | ||
525 | a = le64toh(ao->entry.seqnum); | |
526 | ||
527 | if (a < l->seqnum) | |
528 | return -1; | |
529 | if (a > l->seqnum) | |
530 | return 1; | |
531 | } | |
532 | ||
533 | if (l->monotonic_set && | |
534 | sd_id128_equal(ao->entry.boot_id, l->boot_id)) { | |
535 | ||
536 | a = le64toh(ao->entry.monotonic); | |
537 | ||
538 | if (a < l->monotonic) | |
539 | return -1; | |
540 | if (a > l->monotonic) | |
541 | return 1; | |
542 | } | |
543 | ||
544 | if (l->realtime_set) { | |
545 | ||
546 | a = le64toh(ao->entry.realtime); | |
547 | ||
548 | if (a < l->realtime) | |
549 | return -1; | |
550 | if (a > l->realtime) | |
551 | return 1; | |
552 | } | |
553 | ||
554 | if (l->xor_hash_set) { | |
555 | a = le64toh(ao->entry.xor_hash); | |
556 | ||
557 | if (a < l->xor_hash) | |
558 | return -1; | |
559 | if (a > l->xor_hash) | |
560 | return 1; | |
561 | } | |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
cbdca852 LP |
566 | static int next_for_match( |
567 | sd_journal *j, | |
568 | Match *m, | |
569 | JournalFile *f, | |
570 | uint64_t after_offset, | |
571 | direction_t direction, | |
572 | Object **ret, | |
573 | uint64_t *offset) { | |
574 | ||
de7b95cd | 575 | int r; |
cbdca852 LP |
576 | uint64_t np = 0; |
577 | Object *n; | |
de7b95cd LP |
578 | |
579 | assert(j); | |
cbdca852 LP |
580 | assert(m); |
581 | assert(f); | |
de7b95cd | 582 | |
cbdca852 LP |
583 | if (m->type == MATCH_DISCRETE) { |
584 | uint64_t dp; | |
de190aef | 585 | |
cbdca852 | 586 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
587 | if (r <= 0) |
588 | return r; | |
589 | ||
cbdca852 | 590 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 591 | |
cbdca852 LP |
592 | } else if (m->type == MATCH_OR_TERM) { |
593 | Match *i; | |
de7b95cd | 594 | |
cbdca852 | 595 | /* Find the earliest match beyond after_offset */ |
de190aef | 596 | |
cbdca852 LP |
597 | LIST_FOREACH(matches, i, m->matches) { |
598 | uint64_t cp; | |
de190aef | 599 | |
cbdca852 | 600 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
601 | if (r < 0) |
602 | return r; | |
cbdca852 | 603 | else if (r > 0) { |
bc302926 | 604 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
605 | np = cp; |
606 | } | |
607 | } | |
b4e5f920 | 608 | |
bc302926 ZJS |
609 | if (np == 0) |
610 | return 0; | |
611 | ||
cbdca852 | 612 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 613 | Match *i, *last_moved; |
de190aef | 614 | |
cbdca852 | 615 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 616 | * this until we find an offset that matches for all |
cbdca852 | 617 | * matches. */ |
de190aef | 618 | |
cbdca852 LP |
619 | if (!m->matches) |
620 | return 0; | |
de7b95cd | 621 | |
2bc8ca0c ZJS |
622 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
623 | if (r <= 0) | |
624 | return r; | |
de190aef | 625 | |
2bc8ca0c ZJS |
626 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
627 | last_moved = m->matches; | |
de190aef | 628 | |
2bc8ca0c ZJS |
629 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
630 | uint64_t cp; | |
de190aef | 631 | |
2bc8ca0c ZJS |
632 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
633 | if (r <= 0) | |
634 | return r; | |
de190aef | 635 | |
2bc8ca0c ZJS |
636 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
637 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
638 | np = cp; | |
639 | last_moved = i; | |
de190aef | 640 | } |
2bc8ca0c | 641 | } |
cbdca852 | 642 | } |
de190aef | 643 | |
bc302926 | 644 | assert(np > 0); |
de190aef | 645 | |
cbdca852 LP |
646 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
647 | if (r < 0) | |
648 | return r; | |
de7b95cd | 649 | |
de190aef | 650 | if (ret) |
cbdca852 | 651 | *ret = n; |
de190aef | 652 | if (offset) |
cbdca852 | 653 | *offset = np; |
de190aef LP |
654 | |
655 | return 1; | |
656 | } | |
657 | ||
cbdca852 LP |
658 | static int find_location_for_match( |
659 | sd_journal *j, | |
660 | Match *m, | |
661 | JournalFile *f, | |
662 | direction_t direction, | |
663 | Object **ret, | |
664 | uint64_t *offset) { | |
665 | ||
de190aef | 666 | int r; |
de190aef LP |
667 | |
668 | assert(j); | |
cbdca852 | 669 | assert(m); |
de190aef | 670 | assert(f); |
de190aef | 671 | |
cbdca852 LP |
672 | if (m->type == MATCH_DISCRETE) { |
673 | uint64_t dp; | |
de190aef | 674 | |
cbdca852 | 675 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
676 | if (r <= 0) |
677 | return r; | |
678 | ||
cbdca852 | 679 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 680 | |
cbdca852 LP |
681 | if (j->current_location.type == LOCATION_HEAD) |
682 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
683 | if (j->current_location.type == LOCATION_TAIL) | |
684 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
685 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
686 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
687 | if (j->current_location.monotonic_set) { | |
688 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
689 | if (r != -ENOENT) | |
690 | return r; | |
691 | } | |
692 | if (j->current_location.realtime_set) | |
693 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 694 | |
cbdca852 | 695 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 696 | |
cbdca852 LP |
697 | } else if (m->type == MATCH_OR_TERM) { |
698 | uint64_t np = 0; | |
699 | Object *n; | |
700 | Match *i; | |
de7b95cd | 701 | |
cbdca852 | 702 | /* Find the earliest match */ |
de7b95cd | 703 | |
cbdca852 LP |
704 | LIST_FOREACH(matches, i, m->matches) { |
705 | uint64_t cp; | |
706 | ||
707 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
708 | if (r < 0) | |
709 | return r; | |
710 | else if (r > 0) { | |
711 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
712 | np = cp; | |
de190aef | 713 | } |
cbdca852 | 714 | } |
de190aef | 715 | |
cbdca852 LP |
716 | if (np == 0) |
717 | return 0; | |
de7b95cd | 718 | |
cbdca852 LP |
719 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
720 | if (r < 0) | |
721 | return r; | |
de7b95cd | 722 | |
cbdca852 LP |
723 | if (ret) |
724 | *ret = n; | |
725 | if (offset) | |
726 | *offset = np; | |
de190aef | 727 | |
cbdca852 | 728 | return 1; |
e892bd17 | 729 | |
cbdca852 LP |
730 | } else { |
731 | Match *i; | |
732 | uint64_t np = 0; | |
733 | ||
734 | assert(m->type == MATCH_AND_TERM); | |
735 | ||
736 | /* First jump to the last match, and then find the | |
737 | * next one where all matches match */ | |
738 | ||
739 | if (!m->matches) | |
740 | return 0; | |
741 | ||
742 | LIST_FOREACH(matches, i, m->matches) { | |
743 | uint64_t cp; | |
744 | ||
745 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
746 | if (r <= 0) | |
4b067dc9 LP |
747 | return r; |
748 | ||
bc302926 | 749 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 750 | np = cp; |
de7b95cd LP |
751 | } |
752 | ||
cbdca852 LP |
753 | return next_for_match(j, m, f, np, direction, ret, offset); |
754 | } | |
755 | } | |
de190aef | 756 | |
cbdca852 LP |
757 | static int find_location_with_matches( |
758 | sd_journal *j, | |
759 | JournalFile *f, | |
760 | direction_t direction, | |
761 | Object **ret, | |
762 | uint64_t *offset) { | |
763 | ||
764 | int r; | |
765 | ||
766 | assert(j); | |
767 | assert(f); | |
768 | assert(ret); | |
769 | assert(offset); | |
770 | ||
771 | if (!j->level0) { | |
772 | /* No matches is simple */ | |
773 | ||
774 | if (j->current_location.type == LOCATION_HEAD) | |
775 | return journal_file_next_entry(f, NULL, 0, DIRECTION_DOWN, ret, offset); | |
776 | if (j->current_location.type == LOCATION_TAIL) | |
777 | return journal_file_next_entry(f, NULL, 0, DIRECTION_UP, ret, offset); | |
778 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
779 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
780 | if (j->current_location.monotonic_set) { | |
781 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
782 | if (r != -ENOENT) | |
783 | return r; | |
de7b95cd | 784 | } |
cbdca852 LP |
785 | if (j->current_location.realtime_set) |
786 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 787 | |
cbdca852 LP |
788 | return journal_file_next_entry(f, NULL, 0, direction, ret, offset); |
789 | } else | |
790 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
791 | } | |
de7b95cd | 792 | |
cbdca852 LP |
793 | static int next_with_matches( |
794 | sd_journal *j, | |
795 | JournalFile *f, | |
796 | direction_t direction, | |
797 | Object **ret, | |
798 | uint64_t *offset) { | |
799 | ||
800 | Object *c; | |
801 | uint64_t cp; | |
802 | ||
803 | assert(j); | |
804 | assert(f); | |
805 | assert(ret); | |
806 | assert(offset); | |
807 | ||
808 | c = *ret; | |
809 | cp = *offset; | |
810 | ||
811 | /* No matches is easy. We simple advance the file | |
812 | * pointer by one. */ | |
813 | if (!j->level0) | |
814 | return journal_file_next_entry(f, c, cp, direction, ret, offset); | |
815 | ||
816 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 817 | * with an offset at least one step larger */ |
cbdca852 | 818 | return next_for_match(j, j->level0, f, direction == DIRECTION_DOWN ? cp+1 : cp-1, direction, ret, offset); |
de7b95cd LP |
819 | } |
820 | ||
de190aef LP |
821 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction, Object **ret, uint64_t *offset) { |
822 | Object *c; | |
823 | uint64_t cp; | |
cbdca852 | 824 | int r; |
de190aef LP |
825 | |
826 | assert(j); | |
827 | assert(f); | |
828 | ||
87011c25 | 829 | if (f->last_direction == direction && f->current_offset > 0) { |
466ccd92 LP |
830 | cp = f->current_offset; |
831 | ||
832 | r = journal_file_move_to_object(f, OBJECT_ENTRY, cp, &c); | |
de190aef LP |
833 | if (r < 0) |
834 | return r; | |
835 | ||
de190aef LP |
836 | r = next_with_matches(j, f, direction, &c, &cp); |
837 | if (r <= 0) | |
838 | return r; | |
de190aef | 839 | } else { |
cbdca852 | 840 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
841 | if (r <= 0) |
842 | return r; | |
de190aef LP |
843 | } |
844 | ||
bc302926 | 845 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
846 | * that is actually different from what we were previously |
847 | * looking at. This is necessary to handle entries which exist | |
848 | * in two (or more) journal files, and which shall all be | |
849 | * suppressed but one. */ | |
850 | ||
de190aef LP |
851 | for (;;) { |
852 | bool found; | |
853 | ||
854 | if (j->current_location.type == LOCATION_DISCRETE) { | |
855 | int k; | |
856 | ||
857 | k = compare_with_location(f, c, &j->current_location); | |
858 | if (direction == DIRECTION_DOWN) | |
cbdca852 | 859 | found = k > 0; |
de190aef | 860 | else |
cbdca852 | 861 | found = k < 0; |
de190aef LP |
862 | } else |
863 | found = true; | |
864 | ||
865 | if (found) { | |
866 | if (ret) | |
867 | *ret = c; | |
868 | if (offset) | |
869 | *offset = cp; | |
870 | return 1; | |
871 | } | |
872 | ||
873 | r = next_with_matches(j, f, direction, &c, &cp); | |
874 | if (r <= 0) | |
875 | return r; | |
876 | } | |
877 | } | |
878 | ||
e892bd17 | 879 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de LP |
880 | JournalFile *f, *new_file = NULL; |
881 | uint64_t new_offset = 0; | |
882 | Object *o; | |
883 | uint64_t p; | |
cec736d2 | 884 | Iterator i; |
87d2c1ff LP |
885 | int r; |
886 | ||
a5344d2c LP |
887 | if (!j) |
888 | return -EINVAL; | |
a65f06bb ZJS |
889 | if (journal_pid_changed(j)) |
890 | return -ECHILD; | |
87d2c1ff | 891 | |
cec736d2 | 892 | HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 893 | bool found; |
87d2c1ff | 894 | |
de190aef | 895 | r = next_beyond_location(j, f, direction, &o, &p); |
e590af26 LP |
896 | if (r < 0) { |
897 | log_debug("Can't iterate through %s, ignoring: %s", f->path, strerror(-r)); | |
898 | continue; | |
899 | } else if (r == 0) | |
cec736d2 | 900 | continue; |
87d2c1ff | 901 | |
468b21de | 902 | if (!new_file) |
de190aef LP |
903 | found = true; |
904 | else { | |
905 | int k; | |
906 | ||
468b21de | 907 | k = compare_entry_order(f, o, new_file, new_offset); |
de190aef | 908 | |
bc302926 | 909 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
910 | } |
911 | ||
912 | if (found) { | |
468b21de | 913 | new_file = f; |
cec736d2 | 914 | new_offset = p; |
87d2c1ff | 915 | } |
87d2c1ff LP |
916 | } |
917 | ||
468b21de | 918 | if (!new_file) |
de190aef | 919 | return 0; |
ae2cc8ef | 920 | |
468b21de LP |
921 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_offset, &o); |
922 | if (r < 0) | |
923 | return r; | |
924 | ||
87011c25 | 925 | set_location(j, LOCATION_DISCRETE, new_file, o, direction, new_offset); |
ae2cc8ef | 926 | |
de190aef LP |
927 | return 1; |
928 | } | |
ae2cc8ef | 929 | |
a5344d2c | 930 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
931 | return real_journal_next(j, DIRECTION_DOWN); |
932 | } | |
ae2cc8ef | 933 | |
a5344d2c | 934 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
935 | return real_journal_next(j, DIRECTION_UP); |
936 | } | |
ae2cc8ef | 937 | |
6f003b43 | 938 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 939 | int c = 0, r; |
ae2cc8ef | 940 | |
a5344d2c LP |
941 | if (!j) |
942 | return -EINVAL; | |
a65f06bb ZJS |
943 | if (journal_pid_changed(j)) |
944 | return -ECHILD; | |
de190aef | 945 | |
6f003b43 LP |
946 | if (skip == 0) { |
947 | /* If this is not a discrete skip, then at least | |
948 | * resolve the current location */ | |
949 | if (j->current_location.type != LOCATION_DISCRETE) | |
950 | return real_journal_next(j, direction); | |
951 | ||
952 | return 0; | |
953 | } | |
954 | ||
955 | do { | |
956 | r = real_journal_next(j, direction); | |
de190aef LP |
957 | if (r < 0) |
958 | return r; | |
959 | ||
960 | if (r == 0) | |
961 | return c; | |
962 | ||
963 | skip--; | |
964 | c++; | |
6f003b43 | 965 | } while (skip > 0); |
87d2c1ff | 966 | |
de190aef | 967 | return c; |
87d2c1ff LP |
968 | } |
969 | ||
6f003b43 LP |
970 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
971 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
972 | } | |
de190aef | 973 | |
6f003b43 LP |
974 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
975 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
976 | } |
977 | ||
a5344d2c | 978 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 979 | Object *o; |
87d2c1ff | 980 | int r; |
3fbf9cbb | 981 | char bid[33], sid[33]; |
87d2c1ff | 982 | |
a5344d2c LP |
983 | if (!j) |
984 | return -EINVAL; | |
a65f06bb ZJS |
985 | if (journal_pid_changed(j)) |
986 | return -ECHILD; | |
a5344d2c LP |
987 | if (!cursor) |
988 | return -EINVAL; | |
87d2c1ff | 989 | |
3fbf9cbb LP |
990 | if (!j->current_file || j->current_file->current_offset <= 0) |
991 | return -EADDRNOTAVAIL; | |
87d2c1ff | 992 | |
de190aef | 993 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
994 | if (r < 0) |
995 | return r; | |
996 | ||
3fbf9cbb LP |
997 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
998 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 999 | |
3fbf9cbb | 1000 | if (asprintf(cursor, |
507f22bd ZJS |
1001 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
1002 | sid, le64toh(o->entry.seqnum), | |
1003 | bid, le64toh(o->entry.monotonic), | |
1004 | le64toh(o->entry.realtime), | |
1005 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 1006 | return -ENOMEM; |
87d2c1ff | 1007 | |
6f47ad30 | 1008 | return 0; |
87d2c1ff LP |
1009 | } |
1010 | ||
a5344d2c | 1011 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
c6511e85 | 1012 | char *w, *state; |
de190aef | 1013 | size_t l; |
de190aef LP |
1014 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
1015 | bool | |
1016 | seqnum_id_set = false, | |
1017 | seqnum_set = false, | |
1018 | boot_id_set = false, | |
1019 | monotonic_set = false, | |
1020 | realtime_set = false, | |
1021 | xor_hash_set = false; | |
1022 | sd_id128_t seqnum_id, boot_id; | |
1023 | ||
a5344d2c LP |
1024 | if (!j) |
1025 | return -EINVAL; | |
a65f06bb ZJS |
1026 | if (journal_pid_changed(j)) |
1027 | return -ECHILD; | |
c6511e85 | 1028 | if (isempty(cursor)) |
a5344d2c | 1029 | return -EINVAL; |
de190aef LP |
1030 | |
1031 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1032 | char *item; | |
1033 | int k = 0; | |
1034 | ||
1035 | if (l < 2 || w[1] != '=') | |
1036 | return -EINVAL; | |
1037 | ||
1038 | item = strndup(w, l); | |
1039 | if (!item) | |
1040 | return -ENOMEM; | |
1041 | ||
1042 | switch (w[0]) { | |
1043 | ||
1044 | case 's': | |
1045 | seqnum_id_set = true; | |
be3ea5ea | 1046 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
1047 | break; |
1048 | ||
1049 | case 'i': | |
1050 | seqnum_set = true; | |
be3ea5ea | 1051 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
1052 | k = -EINVAL; |
1053 | break; | |
1054 | ||
1055 | case 'b': | |
1056 | boot_id_set = true; | |
be3ea5ea | 1057 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
1058 | break; |
1059 | ||
1060 | case 'm': | |
1061 | monotonic_set = true; | |
be3ea5ea | 1062 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
1063 | k = -EINVAL; |
1064 | break; | |
1065 | ||
1066 | case 't': | |
1067 | realtime_set = true; | |
be3ea5ea | 1068 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1069 | k = -EINVAL; |
1070 | break; | |
1071 | ||
1072 | case 'x': | |
1073 | xor_hash_set = true; | |
be3ea5ea | 1074 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1075 | k = -EINVAL; |
1076 | break; | |
1077 | } | |
1078 | ||
1079 | free(item); | |
1080 | ||
1081 | if (k < 0) | |
1082 | return k; | |
1083 | } | |
1084 | ||
1085 | if ((!seqnum_set || !seqnum_id_set) && | |
1086 | (!monotonic_set || !boot_id_set) && | |
1087 | !realtime_set) | |
1088 | return -EINVAL; | |
1089 | ||
1090 | reset_location(j); | |
1091 | ||
a87247dd | 1092 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1093 | |
1094 | if (realtime_set) { | |
1095 | j->current_location.realtime = (uint64_t) realtime; | |
1096 | j->current_location.realtime_set = true; | |
1097 | } | |
1098 | ||
1099 | if (seqnum_set && seqnum_id_set) { | |
1100 | j->current_location.seqnum = (uint64_t) seqnum; | |
1101 | j->current_location.seqnum_id = seqnum_id; | |
1102 | j->current_location.seqnum_set = true; | |
1103 | } | |
1104 | ||
1105 | if (monotonic_set && boot_id_set) { | |
1106 | j->current_location.monotonic = (uint64_t) monotonic; | |
1107 | j->current_location.boot_id = boot_id; | |
1108 | j->current_location.monotonic_set = true; | |
1109 | } | |
1110 | ||
1111 | if (xor_hash_set) { | |
1112 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1113 | j->current_location.xor_hash_set = true; | |
1114 | } | |
1115 | ||
1116 | return 0; | |
1117 | } | |
1118 | ||
c6511e85 LP |
1119 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1120 | int r; | |
1121 | char *w, *state; | |
1122 | size_t l; | |
1123 | Object *o; | |
1124 | ||
1125 | if (!j) | |
1126 | return -EINVAL; | |
a65f06bb ZJS |
1127 | if (journal_pid_changed(j)) |
1128 | return -ECHILD; | |
c6511e85 LP |
1129 | if (isempty(cursor)) |
1130 | return -EINVAL; | |
1131 | ||
1132 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1133 | return -EADDRNOTAVAIL; | |
1134 | ||
1135 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1136 | if (r < 0) | |
1137 | return r; | |
1138 | ||
1139 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1140 | _cleanup_free_ char *item = NULL; | |
1141 | sd_id128_t id; | |
1142 | unsigned long long ll; | |
1143 | int k = 0; | |
1144 | ||
1145 | if (l < 2 || w[1] != '=') | |
1146 | return -EINVAL; | |
1147 | ||
1148 | item = strndup(w, l); | |
1149 | if (!item) | |
1150 | return -ENOMEM; | |
1151 | ||
1152 | switch (w[0]) { | |
1153 | ||
1154 | case 's': | |
1155 | k = sd_id128_from_string(item+2, &id); | |
1156 | if (k < 0) | |
1157 | return k; | |
1158 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1159 | return 0; | |
1160 | break; | |
1161 | ||
1162 | case 'i': | |
1163 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1164 | return -EINVAL; | |
1165 | if (ll != le64toh(o->entry.seqnum)) | |
1166 | return 0; | |
1167 | break; | |
1168 | ||
1169 | case 'b': | |
1170 | k = sd_id128_from_string(item+2, &id); | |
1171 | if (k < 0) | |
1172 | return k; | |
1173 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1174 | return 0; | |
1175 | break; | |
1176 | ||
1177 | case 'm': | |
1178 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1179 | return -EINVAL; | |
1180 | if (ll != le64toh(o->entry.monotonic)) | |
1181 | return 0; | |
1182 | break; | |
1183 | ||
1184 | case 't': | |
1185 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1186 | return -EINVAL; | |
1187 | if (ll != le64toh(o->entry.realtime)) | |
1188 | return 0; | |
1189 | break; | |
1190 | ||
1191 | case 'x': | |
1192 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1193 | return -EINVAL; | |
1194 | if (ll != le64toh(o->entry.xor_hash)) | |
1195 | return 0; | |
1196 | break; | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | return 1; | |
1201 | } | |
1202 | ||
1203 | ||
a5344d2c LP |
1204 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1205 | if (!j) | |
1206 | return -EINVAL; | |
a65f06bb ZJS |
1207 | if (journal_pid_changed(j)) |
1208 | return -ECHILD; | |
de190aef LP |
1209 | |
1210 | reset_location(j); | |
a87247dd | 1211 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1212 | j->current_location.boot_id = boot_id; |
1213 | j->current_location.monotonic = usec; | |
1214 | j->current_location.monotonic_set = true; | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
a5344d2c LP |
1219 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1220 | if (!j) | |
1221 | return -EINVAL; | |
a65f06bb ZJS |
1222 | if (journal_pid_changed(j)) |
1223 | return -ECHILD; | |
de190aef LP |
1224 | |
1225 | reset_location(j); | |
a87247dd | 1226 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1227 | j->current_location.realtime = usec; |
1228 | j->current_location.realtime_set = true; | |
1229 | ||
1230 | return 0; | |
1231 | } | |
1232 | ||
a5344d2c LP |
1233 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1234 | if (!j) | |
1235 | return -EINVAL; | |
a65f06bb ZJS |
1236 | if (journal_pid_changed(j)) |
1237 | return -ECHILD; | |
de190aef LP |
1238 | |
1239 | reset_location(j); | |
1240 | j->current_location.type = LOCATION_HEAD; | |
1241 | ||
1242 | return 0; | |
1243 | } | |
1244 | ||
a5344d2c LP |
1245 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1246 | if (!j) | |
1247 | return -EINVAL; | |
a65f06bb ZJS |
1248 | if (journal_pid_changed(j)) |
1249 | return -ECHILD; | |
de190aef LP |
1250 | |
1251 | reset_location(j); | |
1252 | j->current_location.type = LOCATION_TAIL; | |
1253 | ||
1254 | return 0; | |
87d2c1ff LP |
1255 | } |
1256 | ||
85210bff LP |
1257 | static void check_network(sd_journal *j, int fd) { |
1258 | struct statfs sfs; | |
1259 | ||
1260 | assert(j); | |
1261 | ||
1262 | if (j->on_network) | |
1263 | return; | |
1264 | ||
1265 | if (fstatfs(fd, &sfs) < 0) | |
1266 | return; | |
1267 | ||
1268 | j->on_network = | |
bdd29249 HH |
1269 | F_TYPE_CMP(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1270 | F_TYPE_CMP(sfs.f_type, CODA_SUPER_MAGIC) || | |
1271 | F_TYPE_CMP(sfs.f_type, NCP_SUPER_MAGIC) || | |
1272 | F_TYPE_CMP(sfs.f_type, NFS_SUPER_MAGIC) || | |
1273 | F_TYPE_CMP(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1274 | } |
1275 | ||
a688baa8 ZJS |
1276 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1277 | const char *full, *tilded, *atted; | |
1278 | ||
1279 | full = strappend(prefix, ".journal"); | |
1280 | tilded = strappenda(full, "~"); | |
1281 | atted = strappenda(prefix, "@"); | |
1282 | ||
1283 | return streq(filename, full) || | |
1284 | streq(filename, tilded) || | |
1285 | startswith(filename, atted); | |
1286 | } | |
1287 | ||
1288 | static bool file_type_wanted(int flags, const char *filename) { | |
1289 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1290 | return false; | |
1291 | ||
1292 | /* no flags set → every type is OK */ | |
1293 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1294 | return true; | |
1295 | ||
1296 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1297 | return true; | |
1298 | ||
1299 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1300 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1301 | ||
1302 | assert_se(snprintf(prefix, sizeof(prefix), "user-%lu", (unsigned long) getuid()) | |
1303 | < (int) sizeof(prefix)); | |
1304 | ||
1305 | if (file_has_type_prefix(prefix, filename)) | |
1306 | return true; | |
1307 | } | |
1308 | ||
1309 | return false; | |
1310 | } | |
1311 | ||
5302ebe1 | 1312 | static int add_any_file(sd_journal *j, const char *path) { |
3fbf9cbb | 1313 | JournalFile *f; |
5302ebe1 | 1314 | int r; |
3fbf9cbb LP |
1315 | |
1316 | assert(j); | |
5302ebe1 | 1317 | assert(path); |
3fbf9cbb | 1318 | |
a50d7d43 | 1319 | if (hashmap_get(j->files, path)) |
50f20cfd | 1320 | return 0; |
50f20cfd LP |
1321 | |
1322 | if (hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
5302ebe1 | 1323 | log_warning("Too many open journal files, not adding %s.", path); |
3ac251b8 | 1324 | return set_put_error(j, -ETOOMANYREFS); |
50f20cfd LP |
1325 | } |
1326 | ||
16e9f408 | 1327 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1328 | if (r < 0) |
3fbf9cbb | 1329 | return r; |
3fbf9cbb | 1330 | |
72f59706 | 1331 | /* journal_file_dump(f); */ |
de190aef | 1332 | |
3fbf9cbb LP |
1333 | r = hashmap_put(j->files, f->path, f); |
1334 | if (r < 0) { | |
1335 | journal_file_close(f); | |
1336 | return r; | |
1337 | } | |
1338 | ||
5ec76417 | 1339 | log_debug("File %s added.", f->path); |
a50d7d43 | 1340 | |
85210bff LP |
1341 | check_network(j, f->fd); |
1342 | ||
a963990f LP |
1343 | j->current_invalidate_counter ++; |
1344 | ||
50f20cfd LP |
1345 | return 0; |
1346 | } | |
1347 | ||
5302ebe1 ZJS |
1348 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1349 | _cleanup_free_ char *path = NULL; | |
1350 | int r; | |
1351 | ||
1352 | assert(j); | |
1353 | assert(prefix); | |
1354 | assert(filename); | |
1355 | ||
1356 | if (j->no_new_files || | |
1357 | !file_type_wanted(j->flags, filename)) | |
1358 | return 0; | |
1359 | ||
1360 | path = strjoin(prefix, "/", filename, NULL); | |
1361 | if (!path) | |
1362 | return -ENOMEM; | |
1363 | ||
1364 | r = add_any_file(j, path); | |
1365 | if (r == -ENOENT) | |
1366 | return 0; | |
1367 | return 0; | |
1368 | } | |
1369 | ||
a963990f LP |
1370 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1371 | char *path; | |
50f20cfd LP |
1372 | JournalFile *f; |
1373 | ||
1374 | assert(j); | |
1375 | assert(prefix); | |
1376 | assert(filename); | |
1377 | ||
b7def684 | 1378 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1379 | if (!path) |
50f20cfd LP |
1380 | return -ENOMEM; |
1381 | ||
a963990f LP |
1382 | f = hashmap_get(j->files, path); |
1383 | free(path); | |
50f20cfd LP |
1384 | if (!f) |
1385 | return 0; | |
1386 | ||
1387 | hashmap_remove(j->files, f->path); | |
44a5fa34 | 1388 | |
5ec76417 | 1389 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1390 | |
3c1668da LP |
1391 | if (j->current_file == f) { |
1392 | j->current_file = NULL; | |
1393 | j->current_field = 0; | |
1394 | } | |
1395 | ||
1396 | if (j->unique_file == f) { | |
1397 | j->unique_file = NULL; | |
1398 | j->unique_offset = 0; | |
1399 | } | |
1400 | ||
50f20cfd LP |
1401 | journal_file_close(f); |
1402 | ||
a963990f LP |
1403 | j->current_invalidate_counter ++; |
1404 | ||
3fbf9cbb LP |
1405 | return 0; |
1406 | } | |
1407 | ||
a963990f | 1408 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1409 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1410 | int r; |
7fd1b19b | 1411 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1412 | sd_id128_t id, mid; |
a963990f | 1413 | Directory *m; |
3fbf9cbb LP |
1414 | |
1415 | assert(j); | |
1416 | assert(prefix); | |
a963990f | 1417 | assert(dirname); |
3fbf9cbb | 1418 | |
d95b1fb3 ZJS |
1419 | log_debug("Considering %s/%s.", prefix, dirname); |
1420 | ||
cf244689 | 1421 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1422 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1423 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1424 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1425 | return 0; |
1426 | ||
b7def684 | 1427 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1428 | if (!path) |
3fbf9cbb LP |
1429 | return -ENOMEM; |
1430 | ||
a963990f | 1431 | d = opendir(path); |
3fbf9cbb | 1432 | if (!d) { |
a963990f | 1433 | log_debug("Failed to open %s: %m", path); |
3fbf9cbb LP |
1434 | if (errno == ENOENT) |
1435 | return 0; | |
3fbf9cbb LP |
1436 | return -errno; |
1437 | } | |
1438 | ||
a963990f LP |
1439 | m = hashmap_get(j->directories_by_path, path); |
1440 | if (!m) { | |
1441 | m = new0(Directory, 1); | |
a50d7d43 | 1442 | if (!m) |
a963990f | 1443 | return -ENOMEM; |
a963990f LP |
1444 | |
1445 | m->is_root = false; | |
1446 | m->path = path; | |
1447 | ||
1448 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1449 | free(m); |
1450 | return -ENOMEM; | |
1451 | } | |
1452 | ||
a50d7d43 | 1453 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1454 | j->current_invalidate_counter ++; |
1455 | ||
5ec76417 | 1456 | log_debug("Directory %s added.", m->path); |
a963990f | 1457 | |
a50d7d43 | 1458 | } else if (m->is_root) |
a963990f | 1459 | return 0; |
a963990f LP |
1460 | |
1461 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1462 | ||
1463 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1464 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1465 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1466 | IN_ONLYDIR); |
a963990f LP |
1467 | |
1468 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1469 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1470 | } | |
1471 | ||
1472 | for (;;) { | |
7d5e9c0f LP |
1473 | struct dirent *de; |
1474 | union dirent_storage buf; | |
a963990f | 1475 | |
7d5e9c0f | 1476 | r = readdir_r(d, &buf.de, &de); |
a963990f LP |
1477 | if (r != 0 || !de) |
1478 | break; | |
1479 | ||
de2c3907 LP |
1480 | if (dirent_is_file_with_suffix(de, ".journal") || |
1481 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1482 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1483 | if (r < 0) { |
1484 | log_debug("Failed to add file %s/%s: %s", | |
1485 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1486 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1487 | if (r < 0) |
1488 | return r; | |
1489 | } | |
a963990f LP |
1490 | } |
1491 | } | |
1492 | ||
85210bff LP |
1493 | check_network(j, dirfd(d)); |
1494 | ||
a963990f LP |
1495 | return 0; |
1496 | } | |
1497 | ||
1498 | static int add_root_directory(sd_journal *j, const char *p) { | |
7fd1b19b | 1499 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1500 | Directory *m; |
1501 | int r; | |
1502 | ||
1503 | assert(j); | |
1504 | assert(p); | |
1505 | ||
1506 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1507 | !path_startswith(p, "/run")) | |
1508 | return -EINVAL; | |
1509 | ||
1510 | d = opendir(p); | |
1511 | if (!d) | |
1512 | return -errno; | |
1513 | ||
1514 | m = hashmap_get(j->directories_by_path, p); | |
1515 | if (!m) { | |
1516 | m = new0(Directory, 1); | |
a50d7d43 | 1517 | if (!m) |
a963990f | 1518 | return -ENOMEM; |
a963990f LP |
1519 | |
1520 | m->is_root = true; | |
1521 | m->path = strdup(p); | |
1522 | if (!m->path) { | |
a963990f LP |
1523 | free(m); |
1524 | return -ENOMEM; | |
1525 | } | |
1526 | ||
1527 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1528 | free(m->path); |
1529 | free(m); | |
1530 | return -ENOMEM; | |
1531 | } | |
1532 | ||
1533 | j->current_invalidate_counter ++; | |
1534 | ||
5ec76417 | 1535 | log_debug("Root directory %s added.", m->path); |
a963990f | 1536 | |
a50d7d43 | 1537 | } else if (!m->is_root) |
a963990f | 1538 | return 0; |
50f20cfd | 1539 | |
a963990f LP |
1540 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1541 | ||
1542 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1543 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1544 | IN_ONLYDIR); |
a963990f LP |
1545 | |
1546 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1547 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1548 | } | |
50f20cfd | 1549 | |
5302ebe1 ZJS |
1550 | if (j->no_new_files) |
1551 | return 0; | |
1552 | ||
3fbf9cbb | 1553 | for (;;) { |
7d5e9c0f LP |
1554 | struct dirent *de; |
1555 | union dirent_storage buf; | |
a963990f | 1556 | sd_id128_t id; |
3fbf9cbb | 1557 | |
7d5e9c0f | 1558 | r = readdir_r(d, &buf.de, &de); |
3fbf9cbb LP |
1559 | if (r != 0 || !de) |
1560 | break; | |
1561 | ||
de2c3907 LP |
1562 | if (dirent_is_file_with_suffix(de, ".journal") || |
1563 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1564 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1565 | if (r < 0) { |
1566 | log_debug("Failed to add file %s/%s: %s", | |
1567 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1568 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1569 | if (r < 0) |
1570 | return r; | |
1571 | } | |
6f5878a2 | 1572 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1573 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1574 | ||
1575 | r = add_directory(j, m->path, de->d_name); | |
1576 | if (r < 0) | |
1577 | log_debug("Failed to add directory %s/%s: %s", m->path, de->d_name, strerror(-r)); | |
1578 | } | |
3fbf9cbb LP |
1579 | } |
1580 | ||
85210bff LP |
1581 | check_network(j, dirfd(d)); |
1582 | ||
a963990f LP |
1583 | return 0; |
1584 | } | |
1585 | ||
1586 | static int remove_directory(sd_journal *j, Directory *d) { | |
1587 | assert(j); | |
1588 | ||
1589 | if (d->wd > 0) { | |
1590 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1591 | ||
1592 | if (j->inotify_fd >= 0) | |
1593 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1594 | } | |
1595 | ||
1596 | hashmap_remove(j->directories_by_path, d->path); | |
1597 | ||
1598 | if (d->is_root) | |
5ec76417 | 1599 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1600 | else |
5ec76417 | 1601 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1602 | |
1603 | free(d->path); | |
1604 | free(d); | |
50f20cfd | 1605 | |
3fbf9cbb LP |
1606 | return 0; |
1607 | } | |
1608 | ||
a963990f | 1609 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1610 | int r; |
a963990f LP |
1611 | const char search_paths[] = |
1612 | "/run/log/journal\0" | |
1613 | "/var/log/journal\0"; | |
1614 | const char *p; | |
50f20cfd LP |
1615 | |
1616 | assert(j); | |
50f20cfd | 1617 | |
a963990f LP |
1618 | /* We ignore most errors here, since the idea is to only open |
1619 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1620 | |
6fe391c5 ZJS |
1621 | NULSTR_FOREACH(p, search_paths) { |
1622 | r = add_root_directory(j, p); | |
3ac251b8 LP |
1623 | if (r < 0 && r != -ENOENT) { |
1624 | r = set_put_error(j, r); | |
1625 | if (r < 0) | |
1626 | return r; | |
1627 | } | |
6fe391c5 | 1628 | } |
50f20cfd | 1629 | |
a963990f | 1630 | return 0; |
50f20cfd LP |
1631 | } |
1632 | ||
5302ebe1 ZJS |
1633 | static int add_current_paths(sd_journal *j) { |
1634 | Iterator i; | |
1635 | JournalFile *f; | |
1636 | ||
1637 | assert(j); | |
1638 | assert(j->no_new_files); | |
1639 | ||
1640 | /* Simply adds all directories for files we have open as | |
1641 | * "root" directories. We don't expect errors here, so we | |
1642 | * treat them as fatal. */ | |
1643 | ||
1644 | HASHMAP_FOREACH(f, j->files, i) { | |
1645 | int r; | |
1646 | _cleanup_free_ char *dir; | |
1647 | ||
1648 | dir = dirname_malloc(f->path); | |
1649 | if (!dir) | |
1650 | return -ENOMEM; | |
1651 | ||
1652 | r = add_root_directory(j, dir); | |
1653 | if (r < 0) { | |
1654 | set_put_error(j, r); | |
1655 | return r; | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | return 0; | |
1660 | } | |
1661 | ||
1662 | ||
a963990f | 1663 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1664 | assert(j); |
50f20cfd | 1665 | |
a963990f LP |
1666 | if (j->inotify_fd < 0) { |
1667 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1668 | if (j->inotify_fd < 0) | |
1669 | return -errno; | |
1670 | } | |
50f20cfd | 1671 | |
a963990f LP |
1672 | if (!j->directories_by_wd) { |
1673 | j->directories_by_wd = hashmap_new(trivial_hash_func, trivial_compare_func); | |
1674 | if (!j->directories_by_wd) | |
1675 | return -ENOMEM; | |
50f20cfd | 1676 | } |
a963990f LP |
1677 | |
1678 | return 0; | |
50f20cfd LP |
1679 | } |
1680 | ||
7827b1a1 | 1681 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1682 | sd_journal *j; |
50f20cfd | 1683 | |
a963990f LP |
1684 | j = new0(sd_journal, 1); |
1685 | if (!j) | |
1686 | return NULL; | |
50f20cfd | 1687 | |
a65f06bb | 1688 | j->original_pid = getpid(); |
a963990f LP |
1689 | j->inotify_fd = -1; |
1690 | j->flags = flags; | |
93b73b06 | 1691 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1692 | |
7827b1a1 LP |
1693 | if (path) { |
1694 | j->path = strdup(path); | |
6180fc61 ZJS |
1695 | if (!j->path) |
1696 | goto fail; | |
7827b1a1 LP |
1697 | } |
1698 | ||
a963990f | 1699 | j->files = hashmap_new(string_hash_func, string_compare_func); |
a963990f | 1700 | j->directories_by_path = hashmap_new(string_hash_func, string_compare_func); |
84168d80 | 1701 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1702 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1703 | goto fail; |
16e9f408 | 1704 | |
a963990f | 1705 | return j; |
6180fc61 ZJS |
1706 | |
1707 | fail: | |
1708 | sd_journal_close(j); | |
1709 | return NULL; | |
50f20cfd LP |
1710 | } |
1711 | ||
a5344d2c | 1712 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1713 | sd_journal *j; |
3fbf9cbb | 1714 | int r; |
87d2c1ff | 1715 | |
a5344d2c LP |
1716 | if (!ret) |
1717 | return -EINVAL; | |
1718 | ||
1719 | if (flags & ~(SD_JOURNAL_LOCAL_ONLY| | |
1720 | SD_JOURNAL_RUNTIME_ONLY| | |
a688baa8 ZJS |
1721 | SD_JOURNAL_SYSTEM| |
1722 | SD_JOURNAL_CURRENT_USER)) | |
a5344d2c | 1723 | return -EINVAL; |
87d2c1ff | 1724 | |
7827b1a1 | 1725 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1726 | if (!j) |
1727 | return -ENOMEM; | |
1728 | ||
a963990f LP |
1729 | r = add_search_paths(j); |
1730 | if (r < 0) | |
50f20cfd | 1731 | goto fail; |
50f20cfd | 1732 | |
a963990f LP |
1733 | *ret = j; |
1734 | return 0; | |
cf244689 | 1735 | |
a963990f LP |
1736 | fail: |
1737 | sd_journal_close(j); | |
87d2c1ff | 1738 | |
a963990f LP |
1739 | return r; |
1740 | } | |
50f20cfd | 1741 | |
a963990f LP |
1742 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1743 | sd_journal *j; | |
1744 | int r; | |
87d2c1ff | 1745 | |
a963990f LP |
1746 | if (!ret) |
1747 | return -EINVAL; | |
87d2c1ff | 1748 | |
8cb17a6d | 1749 | if (!path) |
a963990f | 1750 | return -EINVAL; |
87d2c1ff | 1751 | |
a963990f LP |
1752 | if (flags != 0) |
1753 | return -EINVAL; | |
87d2c1ff | 1754 | |
7827b1a1 | 1755 | j = journal_new(flags, path); |
a963990f LP |
1756 | if (!j) |
1757 | return -ENOMEM; | |
3fbf9cbb | 1758 | |
a963990f | 1759 | r = add_root_directory(j, path); |
6fe391c5 | 1760 | if (r < 0) { |
3ac251b8 | 1761 | set_put_error(j, r); |
a963990f | 1762 | goto fail; |
6fe391c5 | 1763 | } |
87d2c1ff LP |
1764 | |
1765 | *ret = j; | |
1766 | return 0; | |
1767 | ||
1768 | fail: | |
1769 | sd_journal_close(j); | |
1770 | ||
1771 | return r; | |
a963990f | 1772 | } |
87d2c1ff | 1773 | |
5302ebe1 ZJS |
1774 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1775 | sd_journal *j; | |
1776 | const char **path; | |
1777 | int r; | |
1778 | ||
1779 | if (!ret) | |
1780 | return -EINVAL; | |
1781 | ||
1782 | if (flags != 0) | |
1783 | return -EINVAL; | |
1784 | ||
1785 | j = journal_new(flags, NULL); | |
1786 | if (!j) | |
1787 | return -ENOMEM; | |
1788 | ||
1789 | STRV_FOREACH(path, paths) { | |
1790 | r = add_any_file(j, *path); | |
1791 | if (r < 0) { | |
1792 | log_error("Failed to open %s: %s", *path, strerror(-r)); | |
1793 | goto fail; | |
1794 | } | |
1795 | } | |
1796 | ||
1797 | j->no_new_files = true; | |
1798 | ||
1799 | *ret = j; | |
1800 | return 0; | |
1801 | ||
1802 | fail: | |
1803 | sd_journal_close(j); | |
1804 | ||
1805 | return r; | |
1806 | } | |
1807 | ||
a5344d2c | 1808 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1809 | Directory *d; |
1810 | JournalFile *f; | |
1811 | ||
a5344d2c LP |
1812 | if (!j) |
1813 | return; | |
87d2c1ff | 1814 | |
54b1da83 LP |
1815 | sd_journal_flush_matches(j); |
1816 | ||
a963990f LP |
1817 | while ((f = hashmap_steal_first(j->files))) |
1818 | journal_file_close(f); | |
50f20cfd | 1819 | |
a963990f | 1820 | hashmap_free(j->files); |
260a2be4 | 1821 | |
a963990f LP |
1822 | while ((d = hashmap_first(j->directories_by_path))) |
1823 | remove_directory(j, d); | |
260a2be4 | 1824 | |
a963990f LP |
1825 | while ((d = hashmap_first(j->directories_by_wd))) |
1826 | remove_directory(j, d); | |
87d2c1ff | 1827 | |
a963990f LP |
1828 | hashmap_free(j->directories_by_path); |
1829 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1830 | |
50f20cfd LP |
1831 | if (j->inotify_fd >= 0) |
1832 | close_nointr_nofail(j->inotify_fd); | |
1833 | ||
16e9f408 LP |
1834 | if (j->mmap) |
1835 | mmap_cache_unref(j->mmap); | |
1836 | ||
7827b1a1 | 1837 | free(j->path); |
3c1668da | 1838 | free(j->unique_field); |
6fe391c5 | 1839 | set_free(j->errors); |
87d2c1ff LP |
1840 | free(j); |
1841 | } | |
3fbf9cbb | 1842 | |
a5344d2c | 1843 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1844 | Object *o; |
1845 | JournalFile *f; | |
1846 | int r; | |
1847 | ||
a5344d2c LP |
1848 | if (!j) |
1849 | return -EINVAL; | |
a65f06bb ZJS |
1850 | if (journal_pid_changed(j)) |
1851 | return -ECHILD; | |
a5344d2c LP |
1852 | if (!ret) |
1853 | return -EINVAL; | |
3fbf9cbb LP |
1854 | |
1855 | f = j->current_file; | |
1856 | if (!f) | |
de190aef | 1857 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1858 | |
1859 | if (f->current_offset <= 0) | |
de190aef | 1860 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1861 | |
de190aef | 1862 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1863 | if (r < 0) |
1864 | return r; | |
1865 | ||
1866 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1867 | return 0; |
3fbf9cbb LP |
1868 | } |
1869 | ||
a5344d2c | 1870 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1871 | Object *o; |
1872 | JournalFile *f; | |
1873 | int r; | |
1874 | sd_id128_t id; | |
1875 | ||
a5344d2c LP |
1876 | if (!j) |
1877 | return -EINVAL; | |
a65f06bb ZJS |
1878 | if (journal_pid_changed(j)) |
1879 | return -ECHILD; | |
3fbf9cbb LP |
1880 | |
1881 | f = j->current_file; | |
1882 | if (!f) | |
de190aef | 1883 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1884 | |
1885 | if (f->current_offset <= 0) | |
de190aef | 1886 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1887 | |
de190aef | 1888 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1889 | if (r < 0) |
1890 | return r; | |
1891 | ||
de190aef LP |
1892 | if (ret_boot_id) |
1893 | *ret_boot_id = o->entry.boot_id; | |
1894 | else { | |
1895 | r = sd_id128_get_boot(&id); | |
1896 | if (r < 0) | |
1897 | return r; | |
3fbf9cbb | 1898 | |
de190aef | 1899 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1900 | return -ESTALE; |
de190aef | 1901 | } |
3fbf9cbb | 1902 | |
14a65d65 LP |
1903 | if (ret) |
1904 | *ret = le64toh(o->entry.monotonic); | |
1905 | ||
de190aef | 1906 | return 0; |
3fbf9cbb LP |
1907 | } |
1908 | ||
362a3f81 LP |
1909 | static bool field_is_valid(const char *field) { |
1910 | const char *p; | |
1911 | ||
1912 | assert(field); | |
1913 | ||
1914 | if (isempty(field)) | |
1915 | return false; | |
1916 | ||
1917 | if (startswith(field, "__")) | |
1918 | return false; | |
1919 | ||
1920 | for (p = field; *p; p++) { | |
1921 | ||
1922 | if (*p == '_') | |
1923 | continue; | |
1924 | ||
1925 | if (*p >= 'A' && *p <= 'Z') | |
1926 | continue; | |
1927 | ||
1928 | if (*p >= '0' && *p <= '9') | |
1929 | continue; | |
1930 | ||
1931 | return false; | |
1932 | } | |
1933 | ||
1934 | return true; | |
1935 | } | |
1936 | ||
a5344d2c | 1937 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1938 | JournalFile *f; |
1939 | uint64_t i, n; | |
1940 | size_t field_length; | |
1941 | int r; | |
1942 | Object *o; | |
1943 | ||
a5344d2c LP |
1944 | if (!j) |
1945 | return -EINVAL; | |
a65f06bb ZJS |
1946 | if (journal_pid_changed(j)) |
1947 | return -ECHILD; | |
a5344d2c LP |
1948 | if (!field) |
1949 | return -EINVAL; | |
1950 | if (!data) | |
1951 | return -EINVAL; | |
1952 | if (!size) | |
1953 | return -EINVAL; | |
3fbf9cbb | 1954 | |
362a3f81 | 1955 | if (!field_is_valid(field)) |
3fbf9cbb LP |
1956 | return -EINVAL; |
1957 | ||
1958 | f = j->current_file; | |
1959 | if (!f) | |
de190aef | 1960 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1961 | |
1962 | if (f->current_offset <= 0) | |
de190aef | 1963 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1964 | |
de190aef | 1965 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1966 | if (r < 0) |
1967 | return r; | |
1968 | ||
1969 | field_length = strlen(field); | |
1970 | ||
1971 | n = journal_file_entry_n_items(o); | |
1972 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1973 | uint64_t p, l; |
1974 | le64_t le_hash; | |
3fbf9cbb LP |
1975 | size_t t; |
1976 | ||
1977 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1978 | le_hash = o->entry.items[i].hash; |
de190aef | 1979 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1980 | if (r < 0) |
1981 | return r; | |
1982 | ||
de190aef | 1983 | if (le_hash != o->data.hash) |
de7b95cd LP |
1984 | return -EBADMSG; |
1985 | ||
3fbf9cbb LP |
1986 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1987 | ||
807e17f0 LP |
1988 | if (o->object.flags & OBJECT_COMPRESSED) { |
1989 | ||
1990 | #ifdef HAVE_XZ | |
1991 | if (uncompress_startswith(o->data.payload, l, | |
1992 | &f->compress_buffer, &f->compress_buffer_size, | |
1993 | field, field_length, '=')) { | |
1994 | ||
1995 | uint64_t rsize; | |
1996 | ||
1997 | if (!uncompress_blob(o->data.payload, l, | |
93b73b06 LP |
1998 | &f->compress_buffer, &f->compress_buffer_size, &rsize, |
1999 | j->data_threshold)) | |
807e17f0 LP |
2000 | return -EBADMSG; |
2001 | ||
2002 | *data = f->compress_buffer; | |
2003 | *size = (size_t) rsize; | |
2004 | ||
2005 | return 0; | |
2006 | } | |
2007 | #else | |
2008 | return -EPROTONOSUPPORT; | |
2009 | #endif | |
2010 | ||
2011 | } else if (l >= field_length+1 && | |
2012 | memcmp(o->data.payload, field, field_length) == 0 && | |
2013 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2014 | |
161e54f8 | 2015 | t = (size_t) l; |
3fbf9cbb | 2016 | |
161e54f8 LP |
2017 | if ((uint64_t) t != l) |
2018 | return -E2BIG; | |
3fbf9cbb | 2019 | |
161e54f8 LP |
2020 | *data = o->data.payload; |
2021 | *size = t; | |
3fbf9cbb | 2022 | |
99613ec5 | 2023 | return 0; |
161e54f8 | 2024 | } |
3fbf9cbb | 2025 | |
de190aef | 2026 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2027 | if (r < 0) |
2028 | return r; | |
3fbf9cbb LP |
2029 | } |
2030 | ||
de190aef | 2031 | return -ENOENT; |
3fbf9cbb LP |
2032 | } |
2033 | ||
93b73b06 | 2034 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2035 | size_t t; |
2036 | uint64_t l; | |
2037 | ||
2038 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2039 | t = (size_t) l; | |
2040 | ||
2041 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2042 | if ((uint64_t) t != l) | |
2043 | return -E2BIG; | |
2044 | ||
2045 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2046 | #ifdef HAVE_XZ | |
2047 | uint64_t rsize; | |
2048 | ||
93b73b06 | 2049 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, j->data_threshold)) |
3c1668da LP |
2050 | return -EBADMSG; |
2051 | ||
2052 | *data = f->compress_buffer; | |
2053 | *size = (size_t) rsize; | |
2054 | #else | |
2055 | return -EPROTONOSUPPORT; | |
2056 | #endif | |
2057 | } else { | |
2058 | *data = o->data.payload; | |
2059 | *size = t; | |
2060 | } | |
2061 | ||
2062 | return 0; | |
2063 | } | |
2064 | ||
a5344d2c | 2065 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2066 | JournalFile *f; |
3c1668da | 2067 | uint64_t p, n; |
4fd052ae | 2068 | le64_t le_hash; |
3fbf9cbb LP |
2069 | int r; |
2070 | Object *o; | |
2071 | ||
a5344d2c LP |
2072 | if (!j) |
2073 | return -EINVAL; | |
a65f06bb ZJS |
2074 | if (journal_pid_changed(j)) |
2075 | return -ECHILD; | |
a5344d2c LP |
2076 | if (!data) |
2077 | return -EINVAL; | |
2078 | if (!size) | |
2079 | return -EINVAL; | |
3fbf9cbb LP |
2080 | |
2081 | f = j->current_file; | |
2082 | if (!f) | |
de190aef | 2083 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2084 | |
2085 | if (f->current_offset <= 0) | |
de190aef | 2086 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2087 | |
de190aef | 2088 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2089 | if (r < 0) |
2090 | return r; | |
2091 | ||
2092 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2093 | if (j->current_field >= n) |
3fbf9cbb LP |
2094 | return 0; |
2095 | ||
7210bfb3 | 2096 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2097 | le_hash = o->entry.items[j->current_field].hash; |
2098 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2099 | if (r < 0) |
2100 | return r; | |
2101 | ||
de190aef | 2102 | if (le_hash != o->data.hash) |
de7b95cd LP |
2103 | return -EBADMSG; |
2104 | ||
93b73b06 | 2105 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2106 | if (r < 0) |
2107 | return r; | |
3fbf9cbb | 2108 | |
7210bfb3 | 2109 | j->current_field ++; |
3fbf9cbb LP |
2110 | |
2111 | return 1; | |
2112 | } | |
c2373f84 | 2113 | |
a5344d2c LP |
2114 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2115 | if (!j) | |
2116 | return; | |
8725d60a LP |
2117 | |
2118 | j->current_field = 0; | |
c2373f84 | 2119 | } |
50f20cfd | 2120 | |
a5344d2c | 2121 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2122 | int r; |
2123 | ||
a5344d2c LP |
2124 | if (!j) |
2125 | return -EINVAL; | |
a65f06bb ZJS |
2126 | if (journal_pid_changed(j)) |
2127 | return -ECHILD; | |
50f20cfd | 2128 | |
a963990f LP |
2129 | if (j->inotify_fd >= 0) |
2130 | return j->inotify_fd; | |
2131 | ||
2132 | r = allocate_inotify(j); | |
2133 | if (r < 0) | |
2134 | return r; | |
2135 | ||
2136 | /* Iterate through all dirs again, to add them to the | |
2137 | * inotify */ | |
5302ebe1 ZJS |
2138 | if (j->no_new_files) |
2139 | r = add_current_paths(j); | |
2140 | else if (j->path) | |
7827b1a1 LP |
2141 | r = add_root_directory(j, j->path); |
2142 | else | |
2143 | r = add_search_paths(j); | |
a963990f LP |
2144 | if (r < 0) |
2145 | return r; | |
2146 | ||
50f20cfd LP |
2147 | return j->inotify_fd; |
2148 | } | |
2149 | ||
ee531d94 LP |
2150 | _public_ int sd_journal_get_events(sd_journal *j) { |
2151 | int fd; | |
2152 | ||
2153 | if (!j) | |
2154 | return -EINVAL; | |
a65f06bb ZJS |
2155 | if (journal_pid_changed(j)) |
2156 | return -ECHILD; | |
ee531d94 LP |
2157 | |
2158 | fd = sd_journal_get_fd(j); | |
2159 | if (fd < 0) | |
2160 | return fd; | |
2161 | ||
2162 | return POLLIN; | |
2163 | } | |
2164 | ||
39c155ea LP |
2165 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2166 | int fd; | |
2167 | ||
2168 | if (!j) | |
2169 | return -EINVAL; | |
a65f06bb ZJS |
2170 | if (journal_pid_changed(j)) |
2171 | return -ECHILD; | |
39c155ea LP |
2172 | if (!timeout_usec) |
2173 | return -EINVAL; | |
2174 | ||
2175 | fd = sd_journal_get_fd(j); | |
2176 | if (fd < 0) | |
2177 | return fd; | |
2178 | ||
2179 | if (!j->on_network) { | |
2180 | *timeout_usec = (uint64_t) -1; | |
2181 | return 0; | |
2182 | } | |
2183 | ||
2184 | /* If we are on the network we need to regularly check for | |
2185 | * changes manually */ | |
2186 | ||
2187 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2188 | return 1; | |
2189 | } | |
2190 | ||
50f20cfd | 2191 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2192 | Directory *d; |
50f20cfd LP |
2193 | int r; |
2194 | ||
2195 | assert(j); | |
2196 | assert(e); | |
2197 | ||
2198 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2199 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2200 | if (d) { | |
2201 | sd_id128_t id; | |
50f20cfd | 2202 | |
de2c3907 LP |
2203 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2204 | (endswith(e->name, ".journal") || | |
2205 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2206 | |
2207 | /* Event for a journal file */ | |
2208 | ||
2209 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2210 | r = add_file(j, d->path, e->name); |
6fe391c5 ZJS |
2211 | if (r < 0) { |
2212 | log_debug("Failed to add file %s/%s: %s", | |
2213 | d->path, e->name, strerror(-r)); | |
3ac251b8 | 2214 | set_put_error(j, r); |
6fe391c5 | 2215 | } |
a963990f | 2216 | |
5e6870ea | 2217 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2218 | |
a963990f | 2219 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2220 | if (r < 0) |
a963990f | 2221 | log_debug("Failed to remove file %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2222 | } |
2223 | ||
a963990f | 2224 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2225 | |
a963990f | 2226 | /* Event for a subdirectory */ |
50f20cfd | 2227 | |
a963990f LP |
2228 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2229 | r = remove_directory(j, d); | |
50f20cfd | 2230 | if (r < 0) |
a963990f | 2231 | log_debug("Failed to remove directory %s: %s", d->path, strerror(-r)); |
50f20cfd LP |
2232 | } |
2233 | ||
50f20cfd | 2234 | |
a963990f | 2235 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2236 | |
a963990f | 2237 | /* Event for root directory */ |
50f20cfd | 2238 | |
a963990f LP |
2239 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2240 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2241 | if (r < 0) |
a963990f | 2242 | log_debug("Failed to add directory %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2243 | } |
2244 | } | |
2245 | ||
2246 | return; | |
2247 | } | |
2248 | ||
2249 | if (e->mask & IN_IGNORED) | |
2250 | return; | |
2251 | ||
2252 | log_warning("Unknown inotify event."); | |
2253 | } | |
2254 | ||
a963990f LP |
2255 | static int determine_change(sd_journal *j) { |
2256 | bool b; | |
2257 | ||
2258 | assert(j); | |
2259 | ||
2260 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2261 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2262 | ||
2263 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2264 | } | |
2265 | ||
a5344d2c | 2266 | _public_ int sd_journal_process(sd_journal *j) { |
19d1e4ee | 2267 | uint8_t buffer[sizeof(struct inotify_event) + FILENAME_MAX] _alignas_(struct inotify_event); |
a963990f | 2268 | bool got_something = false; |
50f20cfd | 2269 | |
a5344d2c LP |
2270 | if (!j) |
2271 | return -EINVAL; | |
a65f06bb ZJS |
2272 | if (journal_pid_changed(j)) |
2273 | return -ECHILD; | |
50f20cfd | 2274 | |
39c155ea LP |
2275 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2276 | ||
50f20cfd LP |
2277 | for (;;) { |
2278 | struct inotify_event *e; | |
2279 | ssize_t l; | |
2280 | ||
2281 | l = read(j->inotify_fd, buffer, sizeof(buffer)); | |
2282 | if (l < 0) { | |
a963990f LP |
2283 | if (errno == EAGAIN || errno == EINTR) |
2284 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2285 | |
2286 | return -errno; | |
2287 | } | |
2288 | ||
a963990f LP |
2289 | got_something = true; |
2290 | ||
50f20cfd LP |
2291 | e = (struct inotify_event*) buffer; |
2292 | while (l > 0) { | |
2293 | size_t step; | |
2294 | ||
2295 | process_inotify_event(j, e); | |
2296 | ||
2297 | step = sizeof(struct inotify_event) + e->len; | |
2298 | assert(step <= (size_t) l); | |
2299 | ||
2300 | e = (struct inotify_event*) ((uint8_t*) e + step); | |
2301 | l -= step; | |
2302 | } | |
2303 | } | |
a963990f LP |
2304 | |
2305 | return determine_change(j); | |
50f20cfd | 2306 | } |
6ad1d1c3 | 2307 | |
e02d1cf7 | 2308 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2309 | int r; |
39c155ea | 2310 | uint64_t t; |
e02d1cf7 | 2311 | |
a65f06bb ZJS |
2312 | if (!j) |
2313 | return -EINVAL; | |
2314 | if (journal_pid_changed(j)) | |
2315 | return -ECHILD; | |
e02d1cf7 | 2316 | |
a963990f LP |
2317 | if (j->inotify_fd < 0) { |
2318 | ||
2319 | /* This is the first invocation, hence create the | |
2320 | * inotify watch */ | |
2321 | r = sd_journal_get_fd(j); | |
2322 | if (r < 0) | |
2323 | return r; | |
2324 | ||
2325 | /* The journal might have changed since the context | |
2326 | * object was created and we weren't watching before, | |
2327 | * hence don't wait for anything, and return | |
2328 | * immediately. */ | |
2329 | return determine_change(j); | |
2330 | } | |
2331 | ||
39c155ea LP |
2332 | r = sd_journal_get_timeout(j, &t); |
2333 | if (r < 0) | |
2334 | return r; | |
2335 | ||
2336 | if (t != (uint64_t) -1) { | |
2337 | usec_t n; | |
2338 | ||
2339 | n = now(CLOCK_MONOTONIC); | |
2340 | t = t > n ? t - n : 0; | |
85210bff | 2341 | |
39c155ea LP |
2342 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2343 | timeout_usec = t; | |
85210bff LP |
2344 | } |
2345 | ||
a963990f LP |
2346 | do { |
2347 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2348 | } while (r == -EINTR); | |
e02d1cf7 LP |
2349 | |
2350 | if (r < 0) | |
2351 | return r; | |
2352 | ||
a963990f | 2353 | return sd_journal_process(j); |
e02d1cf7 LP |
2354 | } |
2355 | ||
08984293 LP |
2356 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2357 | Iterator i; | |
2358 | JournalFile *f; | |
2359 | bool first = true; | |
2360 | int r; | |
2361 | ||
2362 | if (!j) | |
2363 | return -EINVAL; | |
a65f06bb ZJS |
2364 | if (journal_pid_changed(j)) |
2365 | return -ECHILD; | |
08984293 LP |
2366 | if (!from && !to) |
2367 | return -EINVAL; | |
39887731 TA |
2368 | if (from == to) |
2369 | return -EINVAL; | |
08984293 LP |
2370 | |
2371 | HASHMAP_FOREACH(f, j->files, i) { | |
2372 | usec_t fr, t; | |
2373 | ||
2374 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2375 | if (r == -ENOENT) |
2376 | continue; | |
08984293 LP |
2377 | if (r < 0) |
2378 | return r; | |
2379 | if (r == 0) | |
2380 | continue; | |
2381 | ||
2382 | if (first) { | |
2383 | if (from) | |
2384 | *from = fr; | |
2385 | if (to) | |
2386 | *to = t; | |
2387 | first = false; | |
2388 | } else { | |
2389 | if (from) | |
2390 | *from = MIN(fr, *from); | |
2391 | if (to) | |
0f91dd87 | 2392 | *to = MAX(t, *to); |
08984293 LP |
2393 | } |
2394 | } | |
2395 | ||
2396 | return first ? 0 : 1; | |
2397 | } | |
2398 | ||
2399 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2400 | Iterator i; | |
2401 | JournalFile *f; | |
2402 | bool first = true; | |
2403 | int r; | |
2404 | ||
2405 | if (!j) | |
2406 | return -EINVAL; | |
a65f06bb ZJS |
2407 | if (journal_pid_changed(j)) |
2408 | return -ECHILD; | |
08984293 LP |
2409 | if (!from && !to) |
2410 | return -EINVAL; | |
39887731 TA |
2411 | if (from == to) |
2412 | return -EINVAL; | |
08984293 LP |
2413 | |
2414 | HASHMAP_FOREACH(f, j->files, i) { | |
2415 | usec_t fr, t; | |
2416 | ||
2417 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2418 | if (r == -ENOENT) |
2419 | continue; | |
08984293 LP |
2420 | if (r < 0) |
2421 | return r; | |
2422 | if (r == 0) | |
2423 | continue; | |
2424 | ||
2425 | if (first) { | |
2426 | if (from) | |
2427 | *from = fr; | |
2428 | if (to) | |
2429 | *to = t; | |
2430 | first = false; | |
2431 | } else { | |
2432 | if (from) | |
2433 | *from = MIN(fr, *from); | |
2434 | if (to) | |
0f91dd87 | 2435 | *to = MAX(t, *to); |
08984293 LP |
2436 | } |
2437 | } | |
2438 | ||
2439 | return first ? 0 : 1; | |
2440 | } | |
2441 | ||
dca6219e LP |
2442 | void journal_print_header(sd_journal *j) { |
2443 | Iterator i; | |
2444 | JournalFile *f; | |
2445 | bool newline = false; | |
2446 | ||
2447 | assert(j); | |
2448 | ||
2449 | HASHMAP_FOREACH(f, j->files, i) { | |
2450 | if (newline) | |
2451 | putchar('\n'); | |
2452 | else | |
2453 | newline = true; | |
2454 | ||
2455 | journal_file_print_header(f); | |
2456 | } | |
2457 | } | |
08984293 | 2458 | |
a1a03e30 LP |
2459 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2460 | Iterator i; | |
2461 | JournalFile *f; | |
2462 | uint64_t sum = 0; | |
2463 | ||
2464 | if (!j) | |
2465 | return -EINVAL; | |
a65f06bb ZJS |
2466 | if (journal_pid_changed(j)) |
2467 | return -ECHILD; | |
a1a03e30 LP |
2468 | if (!bytes) |
2469 | return -EINVAL; | |
2470 | ||
2471 | HASHMAP_FOREACH(f, j->files, i) { | |
2472 | struct stat st; | |
2473 | ||
2474 | if (fstat(f->fd, &st) < 0) | |
2475 | return -errno; | |
2476 | ||
2477 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2478 | } | |
2479 | ||
2480 | *bytes = sum; | |
2481 | return 0; | |
2482 | } | |
2483 | ||
3c1668da LP |
2484 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2485 | char *f; | |
2486 | ||
2487 | if (!j) | |
2488 | return -EINVAL; | |
a65f06bb ZJS |
2489 | if (journal_pid_changed(j)) |
2490 | return -ECHILD; | |
3c1668da LP |
2491 | if (isempty(field)) |
2492 | return -EINVAL; | |
d5c4ed62 LP |
2493 | if (!field_is_valid(field)) |
2494 | return -EINVAL; | |
3c1668da LP |
2495 | |
2496 | f = strdup(field); | |
2497 | if (!f) | |
2498 | return -ENOMEM; | |
2499 | ||
2500 | free(j->unique_field); | |
2501 | j->unique_field = f; | |
2502 | j->unique_file = NULL; | |
2503 | j->unique_offset = 0; | |
2504 | ||
2505 | return 0; | |
2506 | } | |
2507 | ||
2508 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
2509 | Object *o; | |
2510 | size_t k; | |
2511 | int r; | |
19a2bd80 | 2512 | |
3c1668da LP |
2513 | if (!j) |
2514 | return -EINVAL; | |
a65f06bb ZJS |
2515 | if (journal_pid_changed(j)) |
2516 | return -ECHILD; | |
3c1668da LP |
2517 | if (!data) |
2518 | return -EINVAL; | |
2519 | if (!l) | |
2520 | return -EINVAL; | |
2521 | if (!j->unique_field) | |
2522 | return -EINVAL; | |
19a2bd80 | 2523 | |
3c1668da | 2524 | k = strlen(j->unique_field); |
19a2bd80 | 2525 | |
3c1668da LP |
2526 | if (!j->unique_file) { |
2527 | j->unique_file = hashmap_first(j->files); | |
2528 | if (!j->unique_file) | |
2529 | return 0; | |
2530 | j->unique_offset = 0; | |
2531 | } | |
19a2bd80 | 2532 | |
3c1668da LP |
2533 | for (;;) { |
2534 | JournalFile *of; | |
2535 | Iterator i; | |
2536 | const void *odata; | |
2537 | size_t ol; | |
2538 | bool found; | |
2539 | ||
bdc02927 | 2540 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2541 | if (j->unique_offset == 0) { |
2542 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2543 | if (r < 0) | |
2544 | return r; | |
2545 | ||
2546 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2547 | } else { | |
2548 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2549 | if (r < 0) | |
2550 | return r; | |
2551 | ||
2552 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2553 | } | |
2554 | ||
2555 | /* We reached the end of the list? Then start again, with the next file */ | |
2556 | if (j->unique_offset == 0) { | |
2557 | JournalFile *n; | |
2558 | ||
2559 | n = hashmap_next(j->files, j->unique_file->path); | |
2560 | if (!n) | |
2561 | return 0; | |
2562 | ||
2563 | j->unique_file = n; | |
2564 | continue; | |
2565 | } | |
2566 | ||
2567 | /* We do not use the type context here, but 0 instead, | |
2568 | * so that we can look at this data object at the same | |
2569 | * time as one on another file */ | |
2570 | r = journal_file_move_to_object(j->unique_file, 0, j->unique_offset, &o); | |
2571 | if (r < 0) | |
2572 | return r; | |
2573 | ||
2574 | /* Let's do the type check by hand, since we used 0 context above. */ | |
2575 | if (o->object.type != OBJECT_DATA) | |
2576 | return -EBADMSG; | |
2577 | ||
93b73b06 | 2578 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2579 | if (r < 0) |
2580 | return r; | |
2581 | ||
2582 | /* OK, now let's see if we already returned this data | |
2583 | * object by checking if it exists in the earlier | |
2584 | * traversed files. */ | |
2585 | found = false; | |
2586 | HASHMAP_FOREACH(of, j->files, i) { | |
2587 | Object *oo; | |
2588 | uint64_t op; | |
2589 | ||
2590 | if (of == j->unique_file) | |
2591 | break; | |
2592 | ||
2593 | /* Skip this file it didn't have any fields | |
2594 | * indexed */ | |
2595 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2596 | le64toh(of->header->n_fields) <= 0) | |
2597 | continue; | |
2598 | ||
2599 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2600 | if (r < 0) | |
2601 | return r; | |
2602 | ||
2603 | if (r > 0) | |
2604 | found = true; | |
2605 | } | |
2606 | ||
2607 | if (found) | |
2608 | continue; | |
2609 | ||
93b73b06 | 2610 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2611 | if (r < 0) |
2612 | return r; | |
2613 | ||
2614 | return 1; | |
2615 | } | |
2616 | } | |
2617 | ||
115646c7 | 2618 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2619 | if (!j) |
2620 | return; | |
2621 | ||
2622 | j->unique_file = NULL; | |
2623 | j->unique_offset = 0; | |
2624 | } | |
85210bff LP |
2625 | |
2626 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
2627 | if (!j) | |
2628 | return -EINVAL; | |
a65f06bb ZJS |
2629 | if (journal_pid_changed(j)) |
2630 | return -ECHILD; | |
85210bff LP |
2631 | |
2632 | return !j->on_network; | |
2633 | } | |
d4205751 LP |
2634 | |
2635 | static char *lookup_field(const char *field, void *userdata) { | |
2636 | sd_journal *j = userdata; | |
2637 | const void *data; | |
2638 | size_t size, d; | |
2639 | int r; | |
2640 | ||
2641 | assert(field); | |
2642 | assert(j); | |
2643 | ||
2644 | r = sd_journal_get_data(j, field, &data, &size); | |
2645 | if (r < 0 || | |
2646 | size > REPLACE_VAR_MAX) | |
2647 | return strdup(field); | |
2648 | ||
2649 | d = strlen(field) + 1; | |
2650 | ||
2651 | return strndup((const char*) data + d, size - d); | |
2652 | } | |
2653 | ||
2654 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2655 | const void *data; | |
2656 | size_t size; | |
2657 | sd_id128_t id; | |
2658 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2659 | char *t; | |
2660 | int r; | |
2661 | ||
2662 | if (!j) | |
2663 | return -EINVAL; | |
a65f06bb ZJS |
2664 | if (journal_pid_changed(j)) |
2665 | return -ECHILD; | |
d4205751 LP |
2666 | if (!ret) |
2667 | return -EINVAL; | |
2668 | ||
2669 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2670 | if (r < 0) | |
2671 | return r; | |
2672 | ||
2673 | cid = strndup((const char*) data + 11, size - 11); | |
2674 | if (!cid) | |
2675 | return -ENOMEM; | |
2676 | ||
2677 | r = sd_id128_from_string(cid, &id); | |
2678 | if (r < 0) | |
2679 | return r; | |
2680 | ||
844ec79b | 2681 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2682 | if (r < 0) |
2683 | return r; | |
2684 | ||
2685 | t = replace_var(text, lookup_field, j); | |
2686 | if (!t) | |
2687 | return -ENOMEM; | |
2688 | ||
2689 | *ret = t; | |
2690 | return 0; | |
2691 | } | |
8f1e860f LP |
2692 | |
2693 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
2694 | if (!ret) | |
2695 | return -EINVAL; | |
2696 | ||
844ec79b | 2697 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2698 | } |
93b73b06 LP |
2699 | |
2700 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
2701 | if (!j) | |
2702 | return -EINVAL; | |
a65f06bb ZJS |
2703 | if (journal_pid_changed(j)) |
2704 | return -ECHILD; | |
93b73b06 LP |
2705 | |
2706 | j->data_threshold = sz; | |
2707 | return 0; | |
2708 | } | |
2709 | ||
2710 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
2711 | if (!j) | |
2712 | return -EINVAL; | |
a65f06bb ZJS |
2713 | if (journal_pid_changed(j)) |
2714 | return -ECHILD; | |
93b73b06 LP |
2715 | if (!sz) |
2716 | return -EINVAL; | |
2717 | ||
2718 | *sz = j->data_threshold; | |
2719 | return 0; | |
2720 | } |