]>
Commit | Line | Data |
---|---|---|
87d2c1ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
87d2c1ff LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
87d2c1ff | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
87d2c1ff | 22 | #include <errno.h> |
87d2c1ff | 23 | #include <fcntl.h> |
3fbf9cbb | 24 | #include <stddef.h> |
50f20cfd LP |
25 | #include <unistd.h> |
26 | #include <sys/inotify.h> | |
e02d1cf7 | 27 | #include <sys/poll.h> |
85210bff LP |
28 | #include <sys/vfs.h> |
29 | #include <linux/magic.h> | |
87d2c1ff LP |
30 | |
31 | #include "sd-journal.h" | |
32 | #include "journal-def.h" | |
cec736d2 | 33 | #include "journal-file.h" |
260a2be4 | 34 | #include "hashmap.h" |
cec736d2 | 35 | #include "list.h" |
5302ebe1 | 36 | #include "strv.h" |
9eb977db | 37 | #include "path-util.h" |
de7b95cd | 38 | #include "lookup3.h" |
807e17f0 | 39 | #include "compress.h" |
cf244689 | 40 | #include "journal-internal.h" |
85210bff | 41 | #include "missing.h" |
d4205751 LP |
42 | #include "catalog.h" |
43 | #include "replace-var.h" | |
b6741478 | 44 | #include "fileio.h" |
87d2c1ff | 45 | |
cab8ac60 LP |
46 | #define JOURNAL_FILES_MAX 1024 |
47 | ||
85210bff LP |
48 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
49 | ||
d4205751 LP |
50 | #define REPLACE_VAR_MAX 256 |
51 | ||
93b73b06 LP |
52 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
53 | ||
a9a245c1 ZJS |
54 | static void remove_file_real(sd_journal *j, JournalFile *f); |
55 | ||
a65f06bb ZJS |
56 | static bool journal_pid_changed(sd_journal *j) { |
57 | assert(j); | |
58 | ||
59 | /* We don't support people creating a journal object and | |
60 | * keeping it around over a fork(). Let's complain. */ | |
61 | ||
62 | return j->original_pid != getpid(); | |
63 | } | |
64 | ||
6fe391c5 ZJS |
65 | /* We return an error here only if we didn't manage to |
66 | memorize the real error. */ | |
3ac251b8 LP |
67 | static int set_put_error(sd_journal *j, int r) { |
68 | int k; | |
69 | ||
6fe391c5 ZJS |
70 | if (r >= 0) |
71 | return r; | |
72 | ||
d5099efc | 73 | k = set_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
74 | if (k < 0) |
75 | return k; | |
76 | ||
77 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
78 | } |
79 | ||
de190aef | 80 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
81 | Iterator i; |
82 | JournalFile *f; | |
83 | ||
84 | assert(j); | |
85 | ||
86 | j->current_file = NULL; | |
87 | j->current_field = 0; | |
88 | ||
c1f906bd | 89 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 90 | journal_file_reset_location(f); |
8f9b6cd9 LP |
91 | } |
92 | ||
de190aef LP |
93 | static void reset_location(sd_journal *j) { |
94 | assert(j); | |
95 | ||
96 | detach_location(j); | |
97 | zero(j->current_location); | |
98 | } | |
99 | ||
a87247dd | 100 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 101 | assert(l); |
a87247dd | 102 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
103 | assert(f); |
104 | assert(o->object.type == OBJECT_ENTRY); | |
105 | ||
a87247dd | 106 | l->type = type; |
de190aef LP |
107 | l->seqnum = le64toh(o->entry.seqnum); |
108 | l->seqnum_id = f->header->seqnum_id; | |
109 | l->realtime = le64toh(o->entry.realtime); | |
110 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 111 | l->boot_id = o->entry.boot_id; |
de190aef LP |
112 | l->xor_hash = le64toh(o->entry.xor_hash); |
113 | ||
114 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
115 | } | |
116 | ||
1eb6332d | 117 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
118 | assert(j); |
119 | assert(f); | |
120 | assert(o); | |
121 | ||
1eb6332d | 122 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
123 | |
124 | j->current_file = f; | |
125 | j->current_field = 0; | |
126 | ||
6573ef05 MS |
127 | /* Let f know its candidate entry was picked. */ |
128 | assert(f->location_type == LOCATION_SEEK); | |
129 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
130 | } |
131 | ||
cbdca852 LP |
132 | static int match_is_valid(const void *data, size_t size) { |
133 | const char *b, *p; | |
134 | ||
135 | assert(data); | |
136 | ||
137 | if (size < 2) | |
138 | return false; | |
139 | ||
140 | if (startswith(data, "__")) | |
141 | return false; | |
142 | ||
143 | b = data; | |
144 | for (p = b; p < b + size; p++) { | |
145 | ||
146 | if (*p == '=') | |
147 | return p > b; | |
148 | ||
149 | if (*p == '_') | |
150 | continue; | |
151 | ||
152 | if (*p >= 'A' && *p <= 'Z') | |
153 | continue; | |
154 | ||
155 | if (*p >= '0' && *p <= '9') | |
156 | continue; | |
157 | ||
158 | return false; | |
159 | } | |
160 | ||
161 | return false; | |
162 | } | |
163 | ||
164 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
165 | const uint8_t *a = _a, *b = _b; |
166 | size_t j; | |
de190aef LP |
167 | |
168 | for (j = 0; j < s && j < t; j++) { | |
169 | ||
de190aef | 170 | if (a[j] != b[j]) |
cbdca852 | 171 | return false; |
de190aef | 172 | |
cbdca852 LP |
173 | if (a[j] == '=') |
174 | return true; | |
de190aef LP |
175 | } |
176 | ||
bc302926 | 177 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
178 | } |
179 | ||
180 | static Match *match_new(Match *p, MatchType t) { | |
181 | Match *m; | |
182 | ||
183 | m = new0(Match, 1); | |
184 | if (!m) | |
185 | return NULL; | |
186 | ||
187 | m->type = t; | |
188 | ||
189 | if (p) { | |
190 | m->parent = p; | |
71fda00f | 191 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
192 | } |
193 | ||
194 | return m; | |
195 | } | |
196 | ||
197 | static void match_free(Match *m) { | |
198 | assert(m); | |
199 | ||
200 | while (m->matches) | |
201 | match_free(m->matches); | |
202 | ||
203 | if (m->parent) | |
71fda00f | 204 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
205 | |
206 | free(m->data); | |
207 | free(m); | |
208 | } | |
209 | ||
210 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 211 | if (!m || m->matches) |
cbdca852 LP |
212 | return; |
213 | ||
214 | match_free(m); | |
de190aef LP |
215 | } |
216 | ||
a5344d2c | 217 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 218 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 219 | le64_t le_hash; |
87d2c1ff | 220 | |
1ae464e0 TA |
221 | assert_return(j, -EINVAL); |
222 | assert_return(!journal_pid_changed(j), -ECHILD); | |
223 | assert_return(data, -EINVAL); | |
cbdca852 LP |
224 | |
225 | if (size == 0) | |
226 | size = strlen(data); | |
227 | ||
1ae464e0 | 228 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 229 | |
cd34b3c6 HH |
230 | /* level 0: AND term |
231 | * level 1: OR terms | |
232 | * level 2: AND terms | |
233 | * level 3: OR terms | |
234 | * level 4: concrete matches */ | |
cbdca852 LP |
235 | |
236 | if (!j->level0) { | |
cd34b3c6 | 237 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
238 | if (!j->level0) |
239 | return -ENOMEM; | |
240 | } | |
241 | ||
242 | if (!j->level1) { | |
cd34b3c6 | 243 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
244 | if (!j->level1) |
245 | return -ENOMEM; | |
246 | } | |
247 | ||
cd34b3c6 HH |
248 | if (!j->level2) { |
249 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
250 | if (!j->level2) | |
251 | return -ENOMEM; | |
252 | } | |
253 | ||
254 | assert(j->level0->type == MATCH_AND_TERM); | |
255 | assert(j->level1->type == MATCH_OR_TERM); | |
256 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 257 | |
de190aef LP |
258 | le_hash = htole64(hash64(data, size)); |
259 | ||
cd34b3c6 HH |
260 | LIST_FOREACH(matches, l3, j->level2->matches) { |
261 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 262 | |
cd34b3c6 HH |
263 | LIST_FOREACH(matches, l4, l3->matches) { |
264 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 265 | |
cbdca852 LP |
266 | /* Exactly the same match already? Then ignore |
267 | * this addition */ | |
cd34b3c6 HH |
268 | if (l4->le_hash == le_hash && |
269 | l4->size == size && | |
270 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
271 | return 0; |
272 | ||
273 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
274 | if (same_field(data, size, l4->data, l4->size)) { |
275 | add_here = l3; | |
cbdca852 LP |
276 | break; |
277 | } | |
278 | } | |
279 | ||
280 | if (add_here) | |
281 | break; | |
de190aef LP |
282 | } |
283 | ||
cbdca852 | 284 | if (!add_here) { |
cd34b3c6 | 285 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
286 | if (!add_here) |
287 | goto fail; | |
288 | } | |
289 | ||
290 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 291 | if (!m) |
cbdca852 | 292 | goto fail; |
87d2c1ff | 293 | |
cbdca852 | 294 | m->le_hash = le_hash; |
1cc101f1 | 295 | m->size = size; |
cbdca852 LP |
296 | m->data = memdup(data, size); |
297 | if (!m->data) | |
298 | goto fail; | |
299 | ||
300 | detach_location(j); | |
301 | ||
302 | return 0; | |
303 | ||
304 | fail: | |
c5a10d9c ZJS |
305 | match_free_if_empty(add_here); |
306 | match_free_if_empty(j->level2); | |
307 | match_free_if_empty(j->level1); | |
308 | match_free_if_empty(j->level0); | |
cbdca852 LP |
309 | |
310 | return -ENOMEM; | |
311 | } | |
312 | ||
cd34b3c6 | 313 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
314 | assert_return(j, -EINVAL); |
315 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 316 | |
cbdca852 LP |
317 | if (!j->level0) |
318 | return 0; | |
319 | ||
320 | if (!j->level1) | |
321 | return 0; | |
322 | ||
323 | if (!j->level1->matches) | |
324 | return 0; | |
325 | ||
cd34b3c6 HH |
326 | j->level1 = NULL; |
327 | j->level2 = NULL; | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
333 | assert_return(j, -EINVAL); |
334 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
335 | |
336 | if (!j->level0) | |
337 | return 0; | |
338 | ||
339 | if (!j->level1) | |
340 | return 0; | |
341 | ||
342 | if (!j->level2) | |
343 | return 0; | |
344 | ||
345 | if (!j->level2->matches) | |
346 | return 0; | |
cbdca852 | 347 | |
cd34b3c6 | 348 | j->level2 = NULL; |
cbdca852 LP |
349 | return 0; |
350 | } | |
351 | ||
352 | static char *match_make_string(Match *m) { | |
353 | char *p, *r; | |
354 | Match *i; | |
355 | bool enclose = false; | |
356 | ||
357 | if (!m) | |
4ad16808 | 358 | return strdup("none"); |
cbdca852 LP |
359 | |
360 | if (m->type == MATCH_DISCRETE) | |
361 | return strndup(m->data, m->size); | |
362 | ||
363 | p = NULL; | |
364 | LIST_FOREACH(matches, i, m->matches) { | |
365 | char *t, *k; | |
366 | ||
367 | t = match_make_string(i); | |
368 | if (!t) { | |
369 | free(p); | |
370 | return NULL; | |
371 | } | |
372 | ||
373 | if (p) { | |
b7def684 | 374 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
375 | free(p); |
376 | free(t); | |
377 | ||
378 | if (!k) | |
379 | return NULL; | |
380 | ||
381 | p = k; | |
382 | ||
383 | enclose = true; | |
bc302926 | 384 | } else |
cbdca852 | 385 | p = t; |
87d2c1ff LP |
386 | } |
387 | ||
cbdca852 | 388 | if (enclose) { |
b7def684 | 389 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
390 | free(p); |
391 | return r; | |
392 | } | |
87d2c1ff | 393 | |
cbdca852 LP |
394 | return p; |
395 | } | |
de7b95cd | 396 | |
cbdca852 LP |
397 | char *journal_make_match_string(sd_journal *j) { |
398 | assert(j); | |
8f9b6cd9 | 399 | |
cbdca852 | 400 | return match_make_string(j->level0); |
87d2c1ff LP |
401 | } |
402 | ||
a5344d2c LP |
403 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
404 | if (!j) | |
405 | return; | |
87d2c1ff | 406 | |
cbdca852 LP |
407 | if (j->level0) |
408 | match_free(j->level0); | |
de7b95cd | 409 | |
cd34b3c6 | 410 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 411 | |
de190aef | 412 | detach_location(j); |
87d2c1ff LP |
413 | } |
414 | ||
487d3720 MS |
415 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
416 | assert(f); | |
de190aef | 417 | assert(l); |
487d3720 | 418 | assert(f->location_type == LOCATION_SEEK); |
a87247dd | 419 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
420 | |
421 | if (l->monotonic_set && | |
487d3720 | 422 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 423 | l->realtime_set && |
487d3720 | 424 | f->current_realtime == l->realtime && |
de190aef | 425 | l->xor_hash_set && |
487d3720 | 426 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
427 | return 0; |
428 | ||
429 | if (l->seqnum_set && | |
487d3720 | 430 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 431 | |
487d3720 | 432 | if (f->current_seqnum < l->seqnum) |
de190aef | 433 | return -1; |
487d3720 | 434 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
435 | return 1; |
436 | } | |
437 | ||
438 | if (l->monotonic_set && | |
487d3720 | 439 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 440 | |
487d3720 | 441 | if (f->current_monotonic < l->monotonic) |
de190aef | 442 | return -1; |
487d3720 | 443 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
444 | return 1; |
445 | } | |
446 | ||
447 | if (l->realtime_set) { | |
448 | ||
487d3720 | 449 | if (f->current_realtime < l->realtime) |
de190aef | 450 | return -1; |
487d3720 | 451 | if (f->current_realtime > l->realtime) |
de190aef LP |
452 | return 1; |
453 | } | |
454 | ||
455 | if (l->xor_hash_set) { | |
de190aef | 456 | |
487d3720 | 457 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 458 | return -1; |
487d3720 | 459 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
460 | return 1; |
461 | } | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
cbdca852 LP |
466 | static int next_for_match( |
467 | sd_journal *j, | |
468 | Match *m, | |
469 | JournalFile *f, | |
470 | uint64_t after_offset, | |
471 | direction_t direction, | |
472 | Object **ret, | |
473 | uint64_t *offset) { | |
474 | ||
de7b95cd | 475 | int r; |
cbdca852 LP |
476 | uint64_t np = 0; |
477 | Object *n; | |
de7b95cd LP |
478 | |
479 | assert(j); | |
cbdca852 LP |
480 | assert(m); |
481 | assert(f); | |
de7b95cd | 482 | |
cbdca852 LP |
483 | if (m->type == MATCH_DISCRETE) { |
484 | uint64_t dp; | |
de190aef | 485 | |
cbdca852 | 486 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
487 | if (r <= 0) |
488 | return r; | |
489 | ||
cbdca852 | 490 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 491 | |
cbdca852 LP |
492 | } else if (m->type == MATCH_OR_TERM) { |
493 | Match *i; | |
de7b95cd | 494 | |
cbdca852 | 495 | /* Find the earliest match beyond after_offset */ |
de190aef | 496 | |
cbdca852 LP |
497 | LIST_FOREACH(matches, i, m->matches) { |
498 | uint64_t cp; | |
de190aef | 499 | |
cbdca852 | 500 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
501 | if (r < 0) |
502 | return r; | |
cbdca852 | 503 | else if (r > 0) { |
bc302926 | 504 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
505 | np = cp; |
506 | } | |
507 | } | |
b4e5f920 | 508 | |
bc302926 ZJS |
509 | if (np == 0) |
510 | return 0; | |
511 | ||
cbdca852 | 512 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 513 | Match *i, *last_moved; |
de190aef | 514 | |
cbdca852 | 515 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 516 | * this until we find an offset that matches for all |
cbdca852 | 517 | * matches. */ |
de190aef | 518 | |
cbdca852 LP |
519 | if (!m->matches) |
520 | return 0; | |
de7b95cd | 521 | |
2bc8ca0c ZJS |
522 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
523 | if (r <= 0) | |
524 | return r; | |
de190aef | 525 | |
2bc8ca0c ZJS |
526 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
527 | last_moved = m->matches; | |
de190aef | 528 | |
2bc8ca0c ZJS |
529 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
530 | uint64_t cp; | |
de190aef | 531 | |
2bc8ca0c ZJS |
532 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
533 | if (r <= 0) | |
534 | return r; | |
de190aef | 535 | |
2bc8ca0c ZJS |
536 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
537 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
538 | np = cp; | |
539 | last_moved = i; | |
de190aef | 540 | } |
2bc8ca0c | 541 | } |
cbdca852 | 542 | } |
de190aef | 543 | |
bc302926 | 544 | assert(np > 0); |
de190aef | 545 | |
cbdca852 LP |
546 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
547 | if (r < 0) | |
548 | return r; | |
de7b95cd | 549 | |
de190aef | 550 | if (ret) |
cbdca852 | 551 | *ret = n; |
de190aef | 552 | if (offset) |
cbdca852 | 553 | *offset = np; |
de190aef LP |
554 | |
555 | return 1; | |
556 | } | |
557 | ||
cbdca852 LP |
558 | static int find_location_for_match( |
559 | sd_journal *j, | |
560 | Match *m, | |
561 | JournalFile *f, | |
562 | direction_t direction, | |
563 | Object **ret, | |
564 | uint64_t *offset) { | |
565 | ||
de190aef | 566 | int r; |
de190aef LP |
567 | |
568 | assert(j); | |
cbdca852 | 569 | assert(m); |
de190aef | 570 | assert(f); |
de190aef | 571 | |
cbdca852 LP |
572 | if (m->type == MATCH_DISCRETE) { |
573 | uint64_t dp; | |
de190aef | 574 | |
cbdca852 | 575 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
576 | if (r <= 0) |
577 | return r; | |
578 | ||
cbdca852 | 579 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 580 | |
cbdca852 LP |
581 | if (j->current_location.type == LOCATION_HEAD) |
582 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
583 | if (j->current_location.type == LOCATION_TAIL) | |
584 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
585 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
586 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
587 | if (j->current_location.monotonic_set) { | |
588 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
589 | if (r != -ENOENT) | |
590 | return r; | |
591 | } | |
592 | if (j->current_location.realtime_set) | |
593 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 594 | |
cbdca852 | 595 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 596 | |
cbdca852 LP |
597 | } else if (m->type == MATCH_OR_TERM) { |
598 | uint64_t np = 0; | |
599 | Object *n; | |
600 | Match *i; | |
de7b95cd | 601 | |
cbdca852 | 602 | /* Find the earliest match */ |
de7b95cd | 603 | |
cbdca852 LP |
604 | LIST_FOREACH(matches, i, m->matches) { |
605 | uint64_t cp; | |
606 | ||
607 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
608 | if (r < 0) | |
609 | return r; | |
610 | else if (r > 0) { | |
611 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
612 | np = cp; | |
de190aef | 613 | } |
cbdca852 | 614 | } |
de190aef | 615 | |
cbdca852 LP |
616 | if (np == 0) |
617 | return 0; | |
de7b95cd | 618 | |
cbdca852 LP |
619 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
620 | if (r < 0) | |
621 | return r; | |
de7b95cd | 622 | |
cbdca852 LP |
623 | if (ret) |
624 | *ret = n; | |
625 | if (offset) | |
626 | *offset = np; | |
de190aef | 627 | |
cbdca852 | 628 | return 1; |
e892bd17 | 629 | |
cbdca852 LP |
630 | } else { |
631 | Match *i; | |
632 | uint64_t np = 0; | |
633 | ||
634 | assert(m->type == MATCH_AND_TERM); | |
635 | ||
636 | /* First jump to the last match, and then find the | |
637 | * next one where all matches match */ | |
638 | ||
639 | if (!m->matches) | |
640 | return 0; | |
641 | ||
642 | LIST_FOREACH(matches, i, m->matches) { | |
643 | uint64_t cp; | |
644 | ||
645 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
646 | if (r <= 0) | |
4b067dc9 LP |
647 | return r; |
648 | ||
bc302926 | 649 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 650 | np = cp; |
de7b95cd LP |
651 | } |
652 | ||
cbdca852 LP |
653 | return next_for_match(j, m, f, np, direction, ret, offset); |
654 | } | |
655 | } | |
de190aef | 656 | |
cbdca852 LP |
657 | static int find_location_with_matches( |
658 | sd_journal *j, | |
659 | JournalFile *f, | |
660 | direction_t direction, | |
661 | Object **ret, | |
662 | uint64_t *offset) { | |
663 | ||
664 | int r; | |
665 | ||
666 | assert(j); | |
667 | assert(f); | |
668 | assert(ret); | |
669 | assert(offset); | |
670 | ||
671 | if (!j->level0) { | |
672 | /* No matches is simple */ | |
673 | ||
674 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 675 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 676 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 677 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
678 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
679 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
680 | if (j->current_location.monotonic_set) { | |
681 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
682 | if (r != -ENOENT) | |
683 | return r; | |
de7b95cd | 684 | } |
cbdca852 LP |
685 | if (j->current_location.realtime_set) |
686 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 687 | |
f534928a | 688 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
689 | } else |
690 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
691 | } | |
de7b95cd | 692 | |
cbdca852 LP |
693 | static int next_with_matches( |
694 | sd_journal *j, | |
695 | JournalFile *f, | |
696 | direction_t direction, | |
697 | Object **ret, | |
698 | uint64_t *offset) { | |
699 | ||
cbdca852 LP |
700 | assert(j); |
701 | assert(f); | |
702 | assert(ret); | |
703 | assert(offset); | |
704 | ||
cbdca852 LP |
705 | /* No matches is easy. We simple advance the file |
706 | * pointer by one. */ | |
707 | if (!j->level0) | |
b29ddfcb | 708 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
709 | |
710 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 711 | * with an offset at least one step larger */ |
b29ddfcb MS |
712 | return next_for_match(j, j->level0, f, |
713 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
714 | : f->current_offset - 1, | |
715 | direction, ret, offset); | |
de7b95cd LP |
716 | } |
717 | ||
58439db4 | 718 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 719 | Object *c; |
6e693b42 | 720 | uint64_t cp, n_entries; |
cbdca852 | 721 | int r; |
de190aef LP |
722 | |
723 | assert(j); | |
724 | assert(f); | |
725 | ||
87011c25 | 726 | if (f->last_direction == direction && f->current_offset > 0) { |
668c965a MS |
727 | /* If we hit EOF before, recheck if any new entries arrived. */ |
728 | n_entries = le64toh(f->header->n_entries); | |
729 | if (f->location_type == LOCATION_TAIL && n_entries == f->last_n_entries) | |
730 | return 0; | |
731 | f->last_n_entries = n_entries; | |
732 | ||
7943f422 MS |
733 | /* LOCATION_SEEK here means we did the work in a previous |
734 | * iteration and the current location already points to a | |
735 | * candidate entry. */ | |
487d3720 MS |
736 | if (f->location_type != LOCATION_SEEK) { |
737 | r = next_with_matches(j, f, direction, &c, &cp); | |
738 | if (r <= 0) | |
739 | return r; | |
466ccd92 | 740 | |
487d3720 MS |
741 | journal_file_save_location(f, direction, c, cp); |
742 | } | |
de190aef | 743 | } else { |
cbdca852 | 744 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
745 | if (r <= 0) |
746 | return r; | |
487d3720 MS |
747 | |
748 | journal_file_save_location(f, direction, c, cp); | |
de190aef LP |
749 | } |
750 | ||
bc302926 | 751 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
752 | * that is actually different from what we were previously |
753 | * looking at. This is necessary to handle entries which exist | |
754 | * in two (or more) journal files, and which shall all be | |
755 | * suppressed but one. */ | |
756 | ||
de190aef LP |
757 | for (;;) { |
758 | bool found; | |
759 | ||
760 | if (j->current_location.type == LOCATION_DISCRETE) { | |
761 | int k; | |
762 | ||
487d3720 | 763 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
764 | |
765 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
766 | } else |
767 | found = true; | |
768 | ||
487d3720 | 769 | if (found) |
de190aef | 770 | return 1; |
de190aef LP |
771 | |
772 | r = next_with_matches(j, f, direction, &c, &cp); | |
773 | if (r <= 0) | |
774 | return r; | |
487d3720 MS |
775 | |
776 | journal_file_save_location(f, direction, c, cp); | |
de190aef LP |
777 | } |
778 | } | |
779 | ||
e892bd17 | 780 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de | 781 | JournalFile *f, *new_file = NULL; |
cec736d2 | 782 | Iterator i; |
a002d44b | 783 | Object *o; |
87d2c1ff LP |
784 | int r; |
785 | ||
1ae464e0 TA |
786 | assert_return(j, -EINVAL); |
787 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 788 | |
c1f906bd | 789 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 790 | bool found; |
87d2c1ff | 791 | |
58439db4 | 792 | r = next_beyond_location(j, f, direction); |
e590af26 | 793 | if (r < 0) { |
da927ba9 | 794 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 795 | remove_file_real(j, f); |
e590af26 | 796 | continue; |
6573ef05 MS |
797 | } else if (r == 0) { |
798 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 799 | continue; |
6573ef05 | 800 | } |
87d2c1ff | 801 | |
468b21de | 802 | if (!new_file) |
de190aef LP |
803 | found = true; |
804 | else { | |
805 | int k; | |
806 | ||
d8ae66d7 | 807 | k = journal_file_compare_locations(f, new_file); |
de190aef | 808 | |
bc302926 | 809 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
810 | } |
811 | ||
e499c999 | 812 | if (found) |
468b21de | 813 | new_file = f; |
87d2c1ff LP |
814 | } |
815 | ||
468b21de | 816 | if (!new_file) |
de190aef | 817 | return 0; |
ae2cc8ef | 818 | |
e499c999 | 819 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
820 | if (r < 0) |
821 | return r; | |
822 | ||
1eb6332d | 823 | set_location(j, new_file, o); |
ae2cc8ef | 824 | |
de190aef LP |
825 | return 1; |
826 | } | |
ae2cc8ef | 827 | |
a5344d2c | 828 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
829 | return real_journal_next(j, DIRECTION_DOWN); |
830 | } | |
ae2cc8ef | 831 | |
a5344d2c | 832 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
833 | return real_journal_next(j, DIRECTION_UP); |
834 | } | |
ae2cc8ef | 835 | |
6f003b43 | 836 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 837 | int c = 0, r; |
ae2cc8ef | 838 | |
1ae464e0 TA |
839 | assert_return(j, -EINVAL); |
840 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 841 | |
6f003b43 LP |
842 | if (skip == 0) { |
843 | /* If this is not a discrete skip, then at least | |
844 | * resolve the current location */ | |
845 | if (j->current_location.type != LOCATION_DISCRETE) | |
846 | return real_journal_next(j, direction); | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
851 | do { | |
852 | r = real_journal_next(j, direction); | |
de190aef LP |
853 | if (r < 0) |
854 | return r; | |
855 | ||
856 | if (r == 0) | |
857 | return c; | |
858 | ||
859 | skip--; | |
860 | c++; | |
6f003b43 | 861 | } while (skip > 0); |
87d2c1ff | 862 | |
de190aef | 863 | return c; |
87d2c1ff LP |
864 | } |
865 | ||
6f003b43 LP |
866 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
867 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
868 | } | |
de190aef | 869 | |
6f003b43 LP |
870 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
871 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
872 | } |
873 | ||
a5344d2c | 874 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 875 | Object *o; |
87d2c1ff | 876 | int r; |
3fbf9cbb | 877 | char bid[33], sid[33]; |
87d2c1ff | 878 | |
1ae464e0 TA |
879 | assert_return(j, -EINVAL); |
880 | assert_return(!journal_pid_changed(j), -ECHILD); | |
881 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 882 | |
3fbf9cbb LP |
883 | if (!j->current_file || j->current_file->current_offset <= 0) |
884 | return -EADDRNOTAVAIL; | |
87d2c1ff | 885 | |
de190aef | 886 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
887 | if (r < 0) |
888 | return r; | |
889 | ||
3fbf9cbb LP |
890 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
891 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 892 | |
3fbf9cbb | 893 | if (asprintf(cursor, |
507f22bd ZJS |
894 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
895 | sid, le64toh(o->entry.seqnum), | |
896 | bid, le64toh(o->entry.monotonic), | |
897 | le64toh(o->entry.realtime), | |
898 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 899 | return -ENOMEM; |
87d2c1ff | 900 | |
6f47ad30 | 901 | return 0; |
87d2c1ff LP |
902 | } |
903 | ||
a5344d2c | 904 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 905 | const char *word, *state; |
de190aef | 906 | size_t l; |
de190aef LP |
907 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
908 | bool | |
909 | seqnum_id_set = false, | |
910 | seqnum_set = false, | |
911 | boot_id_set = false, | |
912 | monotonic_set = false, | |
913 | realtime_set = false, | |
914 | xor_hash_set = false; | |
915 | sd_id128_t seqnum_id, boot_id; | |
916 | ||
1ae464e0 TA |
917 | assert_return(j, -EINVAL); |
918 | assert_return(!journal_pid_changed(j), -ECHILD); | |
919 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 920 | |
a2a5291b | 921 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
922 | char *item; |
923 | int k = 0; | |
924 | ||
a2a5291b | 925 | if (l < 2 || word[1] != '=') |
de190aef LP |
926 | return -EINVAL; |
927 | ||
a2a5291b | 928 | item = strndup(word, l); |
de190aef LP |
929 | if (!item) |
930 | return -ENOMEM; | |
931 | ||
a2a5291b | 932 | switch (word[0]) { |
de190aef LP |
933 | |
934 | case 's': | |
935 | seqnum_id_set = true; | |
be3ea5ea | 936 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
937 | break; |
938 | ||
939 | case 'i': | |
940 | seqnum_set = true; | |
be3ea5ea | 941 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
942 | k = -EINVAL; |
943 | break; | |
944 | ||
945 | case 'b': | |
946 | boot_id_set = true; | |
be3ea5ea | 947 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
948 | break; |
949 | ||
950 | case 'm': | |
951 | monotonic_set = true; | |
be3ea5ea | 952 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
953 | k = -EINVAL; |
954 | break; | |
955 | ||
956 | case 't': | |
957 | realtime_set = true; | |
be3ea5ea | 958 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
959 | k = -EINVAL; |
960 | break; | |
961 | ||
962 | case 'x': | |
963 | xor_hash_set = true; | |
be3ea5ea | 964 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
965 | k = -EINVAL; |
966 | break; | |
967 | } | |
968 | ||
969 | free(item); | |
970 | ||
971 | if (k < 0) | |
972 | return k; | |
973 | } | |
974 | ||
975 | if ((!seqnum_set || !seqnum_id_set) && | |
976 | (!monotonic_set || !boot_id_set) && | |
977 | !realtime_set) | |
978 | return -EINVAL; | |
979 | ||
980 | reset_location(j); | |
981 | ||
a87247dd | 982 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
983 | |
984 | if (realtime_set) { | |
985 | j->current_location.realtime = (uint64_t) realtime; | |
986 | j->current_location.realtime_set = true; | |
987 | } | |
988 | ||
989 | if (seqnum_set && seqnum_id_set) { | |
990 | j->current_location.seqnum = (uint64_t) seqnum; | |
991 | j->current_location.seqnum_id = seqnum_id; | |
992 | j->current_location.seqnum_set = true; | |
993 | } | |
994 | ||
995 | if (monotonic_set && boot_id_set) { | |
996 | j->current_location.monotonic = (uint64_t) monotonic; | |
997 | j->current_location.boot_id = boot_id; | |
998 | j->current_location.monotonic_set = true; | |
999 | } | |
1000 | ||
1001 | if (xor_hash_set) { | |
1002 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1003 | j->current_location.xor_hash_set = true; | |
1004 | } | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
c6511e85 LP |
1009 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1010 | int r; | |
a2a5291b | 1011 | const char *word, *state; |
c6511e85 LP |
1012 | size_t l; |
1013 | Object *o; | |
1014 | ||
1ae464e0 TA |
1015 | assert_return(j, -EINVAL); |
1016 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1017 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1018 | |
1019 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1020 | return -EADDRNOTAVAIL; | |
1021 | ||
1022 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1023 | if (r < 0) | |
1024 | return r; | |
1025 | ||
a2a5291b | 1026 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
c6511e85 LP |
1027 | _cleanup_free_ char *item = NULL; |
1028 | sd_id128_t id; | |
1029 | unsigned long long ll; | |
1030 | int k = 0; | |
1031 | ||
a2a5291b | 1032 | if (l < 2 || word[1] != '=') |
c6511e85 LP |
1033 | return -EINVAL; |
1034 | ||
a2a5291b | 1035 | item = strndup(word, l); |
c6511e85 LP |
1036 | if (!item) |
1037 | return -ENOMEM; | |
1038 | ||
a2a5291b | 1039 | switch (word[0]) { |
c6511e85 LP |
1040 | |
1041 | case 's': | |
1042 | k = sd_id128_from_string(item+2, &id); | |
1043 | if (k < 0) | |
1044 | return k; | |
1045 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1046 | return 0; | |
1047 | break; | |
1048 | ||
1049 | case 'i': | |
1050 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1051 | return -EINVAL; | |
1052 | if (ll != le64toh(o->entry.seqnum)) | |
1053 | return 0; | |
1054 | break; | |
1055 | ||
1056 | case 'b': | |
1057 | k = sd_id128_from_string(item+2, &id); | |
1058 | if (k < 0) | |
1059 | return k; | |
1060 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1061 | return 0; | |
1062 | break; | |
1063 | ||
1064 | case 'm': | |
1065 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1066 | return -EINVAL; | |
1067 | if (ll != le64toh(o->entry.monotonic)) | |
1068 | return 0; | |
1069 | break; | |
1070 | ||
1071 | case 't': | |
1072 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1073 | return -EINVAL; | |
1074 | if (ll != le64toh(o->entry.realtime)) | |
1075 | return 0; | |
1076 | break; | |
1077 | ||
1078 | case 'x': | |
1079 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1080 | return -EINVAL; | |
1081 | if (ll != le64toh(o->entry.xor_hash)) | |
1082 | return 0; | |
1083 | break; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | return 1; | |
1088 | } | |
1089 | ||
1090 | ||
a5344d2c | 1091 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1092 | assert_return(j, -EINVAL); |
1093 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1094 | |
1095 | reset_location(j); | |
a87247dd | 1096 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1097 | j->current_location.boot_id = boot_id; |
1098 | j->current_location.monotonic = usec; | |
1099 | j->current_location.monotonic_set = true; | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | ||
a5344d2c | 1104 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1105 | assert_return(j, -EINVAL); |
1106 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1107 | |
1108 | reset_location(j); | |
a87247dd | 1109 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1110 | j->current_location.realtime = usec; |
1111 | j->current_location.realtime_set = true; | |
1112 | ||
1113 | return 0; | |
1114 | } | |
1115 | ||
a5344d2c | 1116 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1117 | assert_return(j, -EINVAL); |
1118 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1119 | |
1120 | reset_location(j); | |
1121 | j->current_location.type = LOCATION_HEAD; | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | ||
a5344d2c | 1126 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1127 | assert_return(j, -EINVAL); |
1128 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1129 | |
1130 | reset_location(j); | |
1131 | j->current_location.type = LOCATION_TAIL; | |
1132 | ||
1133 | return 0; | |
87d2c1ff LP |
1134 | } |
1135 | ||
85210bff LP |
1136 | static void check_network(sd_journal *j, int fd) { |
1137 | struct statfs sfs; | |
1138 | ||
1139 | assert(j); | |
1140 | ||
1141 | if (j->on_network) | |
1142 | return; | |
1143 | ||
1144 | if (fstatfs(fd, &sfs) < 0) | |
1145 | return; | |
1146 | ||
1147 | j->on_network = | |
c51cf056 ZJS |
1148 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1149 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1150 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1151 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1152 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1153 | } |
1154 | ||
a688baa8 ZJS |
1155 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1156 | const char *full, *tilded, *atted; | |
1157 | ||
baabc091 | 1158 | full = strappenda(prefix, ".journal"); |
a688baa8 ZJS |
1159 | tilded = strappenda(full, "~"); |
1160 | atted = strappenda(prefix, "@"); | |
1161 | ||
1162 | return streq(filename, full) || | |
1163 | streq(filename, tilded) || | |
1164 | startswith(filename, atted); | |
1165 | } | |
1166 | ||
1167 | static bool file_type_wanted(int flags, const char *filename) { | |
1168 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1169 | return false; | |
1170 | ||
1171 | /* no flags set → every type is OK */ | |
1172 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1173 | return true; | |
1174 | ||
1175 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1176 | return true; | |
1177 | ||
1178 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1179 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1180 | ||
de0671ee | 1181 | assert_se(snprintf(prefix, sizeof(prefix), "user-"UID_FMT, getuid()) |
a688baa8 ZJS |
1182 | < (int) sizeof(prefix)); |
1183 | ||
1184 | if (file_has_type_prefix(prefix, filename)) | |
1185 | return true; | |
1186 | } | |
1187 | ||
1188 | return false; | |
1189 | } | |
1190 | ||
5302ebe1 | 1191 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1192 | JournalFile *f = NULL; |
5302ebe1 | 1193 | int r; |
3fbf9cbb LP |
1194 | |
1195 | assert(j); | |
5302ebe1 | 1196 | assert(path); |
3fbf9cbb | 1197 | |
c1f906bd | 1198 | if (ordered_hashmap_get(j->files, path)) |
50f20cfd | 1199 | return 0; |
50f20cfd | 1200 | |
c1f906bd | 1201 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
5302ebe1 | 1202 | log_warning("Too many open journal files, not adding %s.", path); |
3ac251b8 | 1203 | return set_put_error(j, -ETOOMANYREFS); |
50f20cfd LP |
1204 | } |
1205 | ||
16e9f408 | 1206 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1207 | if (r < 0) |
3fbf9cbb | 1208 | return r; |
3fbf9cbb | 1209 | |
72f59706 | 1210 | /* journal_file_dump(f); */ |
de190aef | 1211 | |
c1f906bd | 1212 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb LP |
1213 | if (r < 0) { |
1214 | journal_file_close(f); | |
1215 | return r; | |
1216 | } | |
1217 | ||
5ec76417 | 1218 | log_debug("File %s added.", f->path); |
a50d7d43 | 1219 | |
85210bff LP |
1220 | check_network(j, f->fd); |
1221 | ||
a963990f LP |
1222 | j->current_invalidate_counter ++; |
1223 | ||
50f20cfd LP |
1224 | return 0; |
1225 | } | |
1226 | ||
5302ebe1 ZJS |
1227 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1228 | _cleanup_free_ char *path = NULL; | |
1229 | int r; | |
1230 | ||
1231 | assert(j); | |
1232 | assert(prefix); | |
1233 | assert(filename); | |
1234 | ||
1235 | if (j->no_new_files || | |
1236 | !file_type_wanted(j->flags, filename)) | |
1237 | return 0; | |
1238 | ||
1239 | path = strjoin(prefix, "/", filename, NULL); | |
1240 | if (!path) | |
1241 | return -ENOMEM; | |
1242 | ||
1243 | r = add_any_file(j, path); | |
1244 | if (r == -ENOENT) | |
1245 | return 0; | |
1246 | return 0; | |
1247 | } | |
1248 | ||
a963990f | 1249 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
a9a245c1 | 1250 | _cleanup_free_ char *path; |
50f20cfd LP |
1251 | JournalFile *f; |
1252 | ||
1253 | assert(j); | |
1254 | assert(prefix); | |
1255 | assert(filename); | |
1256 | ||
b7def684 | 1257 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1258 | if (!path) |
50f20cfd LP |
1259 | return -ENOMEM; |
1260 | ||
c1f906bd | 1261 | f = ordered_hashmap_get(j->files, path); |
50f20cfd LP |
1262 | if (!f) |
1263 | return 0; | |
1264 | ||
a9a245c1 ZJS |
1265 | remove_file_real(j, f); |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1270 | assert(j); | |
1271 | assert(f); | |
1272 | ||
c1f906bd | 1273 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1274 | |
5ec76417 | 1275 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1276 | |
3c1668da LP |
1277 | if (j->current_file == f) { |
1278 | j->current_file = NULL; | |
1279 | j->current_field = 0; | |
1280 | } | |
1281 | ||
1282 | if (j->unique_file == f) { | |
360af4cf | 1283 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1284 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1285 | j->unique_offset = 0; |
360af4cf ZJS |
1286 | if (!j->unique_file) |
1287 | j->unique_file_lost = true; | |
3c1668da LP |
1288 | } |
1289 | ||
50f20cfd LP |
1290 | journal_file_close(f); |
1291 | ||
a963990f | 1292 | j->current_invalidate_counter ++; |
3fbf9cbb LP |
1293 | } |
1294 | ||
a963990f | 1295 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1296 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1297 | int r; |
7fd1b19b | 1298 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1299 | sd_id128_t id, mid; |
a963990f | 1300 | Directory *m; |
3fbf9cbb LP |
1301 | |
1302 | assert(j); | |
1303 | assert(prefix); | |
a963990f | 1304 | assert(dirname); |
3fbf9cbb | 1305 | |
d95b1fb3 ZJS |
1306 | log_debug("Considering %s/%s.", prefix, dirname); |
1307 | ||
cf244689 | 1308 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1309 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1310 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1311 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1312 | return 0; |
1313 | ||
b7def684 | 1314 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1315 | if (!path) |
3fbf9cbb LP |
1316 | return -ENOMEM; |
1317 | ||
a963990f | 1318 | d = opendir(path); |
3fbf9cbb | 1319 | if (!d) { |
56f64d95 | 1320 | log_debug_errno(errno, "Failed to open %s: %m", path); |
3fbf9cbb LP |
1321 | if (errno == ENOENT) |
1322 | return 0; | |
3fbf9cbb LP |
1323 | return -errno; |
1324 | } | |
1325 | ||
a963990f LP |
1326 | m = hashmap_get(j->directories_by_path, path); |
1327 | if (!m) { | |
1328 | m = new0(Directory, 1); | |
a50d7d43 | 1329 | if (!m) |
a963990f | 1330 | return -ENOMEM; |
a963990f LP |
1331 | |
1332 | m->is_root = false; | |
1333 | m->path = path; | |
1334 | ||
1335 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1336 | free(m); |
1337 | return -ENOMEM; | |
1338 | } | |
1339 | ||
a50d7d43 | 1340 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1341 | j->current_invalidate_counter ++; |
1342 | ||
5ec76417 | 1343 | log_debug("Directory %s added.", m->path); |
a963990f | 1344 | |
a50d7d43 | 1345 | } else if (m->is_root) |
a963990f | 1346 | return 0; |
a963990f LP |
1347 | |
1348 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1349 | ||
1350 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1351 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1352 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1353 | IN_ONLYDIR); |
a963990f LP |
1354 | |
1355 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1356 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1357 | } | |
1358 | ||
1359 | for (;;) { | |
7d5e9c0f | 1360 | struct dirent *de; |
a963990f | 1361 | |
bde1fdd7 FW |
1362 | errno = 0; |
1363 | de = readdir(d); | |
1364 | if (!de && errno != 0) { | |
1365 | r = -errno; | |
56f64d95 | 1366 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1367 | return r; |
1368 | } | |
1369 | if (!de) | |
a963990f LP |
1370 | break; |
1371 | ||
de2c3907 LP |
1372 | if (dirent_is_file_with_suffix(de, ".journal") || |
1373 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1374 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1375 | if (r < 0) { |
c33b3297 MS |
1376 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1377 | m->path, de->d_name); | |
3ac251b8 | 1378 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1379 | if (r < 0) |
1380 | return r; | |
1381 | } | |
a963990f LP |
1382 | } |
1383 | } | |
1384 | ||
85210bff LP |
1385 | check_network(j, dirfd(d)); |
1386 | ||
a963990f LP |
1387 | return 0; |
1388 | } | |
1389 | ||
89739579 | 1390 | static int add_root_directory(sd_journal *j, const char *p) { |
7fd1b19b | 1391 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1392 | Directory *m; |
1393 | int r; | |
1394 | ||
1395 | assert(j); | |
1396 | assert(p); | |
1397 | ||
1398 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1399 | !path_startswith(p, "/run")) | |
1400 | return -EINVAL; | |
1401 | ||
89739579 LP |
1402 | if (j->prefix) |
1403 | p = strappenda(j->prefix, p); | |
b6741478 | 1404 | |
a963990f LP |
1405 | d = opendir(p); |
1406 | if (!d) | |
1407 | return -errno; | |
1408 | ||
1409 | m = hashmap_get(j->directories_by_path, p); | |
1410 | if (!m) { | |
1411 | m = new0(Directory, 1); | |
a50d7d43 | 1412 | if (!m) |
a963990f | 1413 | return -ENOMEM; |
a963990f LP |
1414 | |
1415 | m->is_root = true; | |
1416 | m->path = strdup(p); | |
1417 | if (!m->path) { | |
a963990f LP |
1418 | free(m); |
1419 | return -ENOMEM; | |
1420 | } | |
1421 | ||
1422 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1423 | free(m->path); |
1424 | free(m); | |
1425 | return -ENOMEM; | |
1426 | } | |
1427 | ||
1428 | j->current_invalidate_counter ++; | |
1429 | ||
5ec76417 | 1430 | log_debug("Root directory %s added.", m->path); |
a963990f | 1431 | |
a50d7d43 | 1432 | } else if (!m->is_root) |
a963990f | 1433 | return 0; |
50f20cfd | 1434 | |
a963990f LP |
1435 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1436 | ||
1437 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1438 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1439 | IN_ONLYDIR); |
a963990f LP |
1440 | |
1441 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1442 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1443 | } | |
50f20cfd | 1444 | |
5302ebe1 ZJS |
1445 | if (j->no_new_files) |
1446 | return 0; | |
1447 | ||
3fbf9cbb | 1448 | for (;;) { |
7d5e9c0f | 1449 | struct dirent *de; |
a963990f | 1450 | sd_id128_t id; |
3fbf9cbb | 1451 | |
bde1fdd7 FW |
1452 | errno = 0; |
1453 | de = readdir(d); | |
1454 | if (!de && errno != 0) { | |
1455 | r = -errno; | |
56f64d95 | 1456 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1457 | return r; |
1458 | } | |
1459 | if (!de) | |
3fbf9cbb LP |
1460 | break; |
1461 | ||
de2c3907 LP |
1462 | if (dirent_is_file_with_suffix(de, ".journal") || |
1463 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1464 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1465 | if (r < 0) { |
c33b3297 MS |
1466 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1467 | m->path, de->d_name); | |
3ac251b8 | 1468 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1469 | if (r < 0) |
1470 | return r; | |
1471 | } | |
6f5878a2 | 1472 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1473 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1474 | ||
1475 | r = add_directory(j, m->path, de->d_name); | |
1476 | if (r < 0) | |
da927ba9 | 1477 | log_debug_errno(r, "Failed to add directory %s/%s: %m", m->path, de->d_name); |
a963990f | 1478 | } |
3fbf9cbb LP |
1479 | } |
1480 | ||
85210bff LP |
1481 | check_network(j, dirfd(d)); |
1482 | ||
a963990f LP |
1483 | return 0; |
1484 | } | |
1485 | ||
1486 | static int remove_directory(sd_journal *j, Directory *d) { | |
1487 | assert(j); | |
1488 | ||
1489 | if (d->wd > 0) { | |
1490 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1491 | ||
1492 | if (j->inotify_fd >= 0) | |
1493 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1494 | } | |
1495 | ||
1496 | hashmap_remove(j->directories_by_path, d->path); | |
1497 | ||
1498 | if (d->is_root) | |
5ec76417 | 1499 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1500 | else |
5ec76417 | 1501 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1502 | |
1503 | free(d->path); | |
1504 | free(d); | |
50f20cfd | 1505 | |
3fbf9cbb LP |
1506 | return 0; |
1507 | } | |
1508 | ||
89739579 | 1509 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1510 | int r; |
a963990f LP |
1511 | const char search_paths[] = |
1512 | "/run/log/journal\0" | |
1513 | "/var/log/journal\0"; | |
1514 | const char *p; | |
50f20cfd LP |
1515 | |
1516 | assert(j); | |
50f20cfd | 1517 | |
a963990f LP |
1518 | /* We ignore most errors here, since the idea is to only open |
1519 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1520 | |
6fe391c5 | 1521 | NULSTR_FOREACH(p, search_paths) { |
89739579 | 1522 | r = add_root_directory(j, p); |
3ac251b8 LP |
1523 | if (r < 0 && r != -ENOENT) { |
1524 | r = set_put_error(j, r); | |
1525 | if (r < 0) | |
1526 | return r; | |
1527 | } | |
6fe391c5 | 1528 | } |
50f20cfd | 1529 | |
a963990f | 1530 | return 0; |
50f20cfd LP |
1531 | } |
1532 | ||
5302ebe1 ZJS |
1533 | static int add_current_paths(sd_journal *j) { |
1534 | Iterator i; | |
1535 | JournalFile *f; | |
1536 | ||
1537 | assert(j); | |
1538 | assert(j->no_new_files); | |
1539 | ||
1540 | /* Simply adds all directories for files we have open as | |
1541 | * "root" directories. We don't expect errors here, so we | |
1542 | * treat them as fatal. */ | |
1543 | ||
c1f906bd | 1544 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1545 | _cleanup_free_ char *dir; |
e9174f29 | 1546 | int r; |
5302ebe1 ZJS |
1547 | |
1548 | dir = dirname_malloc(f->path); | |
1549 | if (!dir) | |
1550 | return -ENOMEM; | |
1551 | ||
89739579 | 1552 | r = add_root_directory(j, dir); |
5302ebe1 ZJS |
1553 | if (r < 0) { |
1554 | set_put_error(j, r); | |
1555 | return r; | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | ||
a963990f | 1563 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1564 | assert(j); |
50f20cfd | 1565 | |
a963990f LP |
1566 | if (j->inotify_fd < 0) { |
1567 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1568 | if (j->inotify_fd < 0) | |
1569 | return -errno; | |
1570 | } | |
50f20cfd | 1571 | |
a963990f | 1572 | if (!j->directories_by_wd) { |
d5099efc | 1573 | j->directories_by_wd = hashmap_new(NULL); |
a963990f LP |
1574 | if (!j->directories_by_wd) |
1575 | return -ENOMEM; | |
50f20cfd | 1576 | } |
a963990f LP |
1577 | |
1578 | return 0; | |
50f20cfd LP |
1579 | } |
1580 | ||
7827b1a1 | 1581 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1582 | sd_journal *j; |
50f20cfd | 1583 | |
a963990f LP |
1584 | j = new0(sd_journal, 1); |
1585 | if (!j) | |
1586 | return NULL; | |
50f20cfd | 1587 | |
a65f06bb | 1588 | j->original_pid = getpid(); |
a963990f LP |
1589 | j->inotify_fd = -1; |
1590 | j->flags = flags; | |
93b73b06 | 1591 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1592 | |
7827b1a1 LP |
1593 | if (path) { |
1594 | j->path = strdup(path); | |
6180fc61 ZJS |
1595 | if (!j->path) |
1596 | goto fail; | |
7827b1a1 LP |
1597 | } |
1598 | ||
c1f906bd | 1599 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1600 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1601 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1602 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1603 | goto fail; |
16e9f408 | 1604 | |
a963990f | 1605 | return j; |
6180fc61 ZJS |
1606 | |
1607 | fail: | |
1608 | sd_journal_close(j); | |
1609 | return NULL; | |
50f20cfd LP |
1610 | } |
1611 | ||
a5344d2c | 1612 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1613 | sd_journal *j; |
3fbf9cbb | 1614 | int r; |
87d2c1ff | 1615 | |
1ae464e0 | 1616 | assert_return(ret, -EINVAL); |
b6741478 | 1617 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1618 | |
7827b1a1 | 1619 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1620 | if (!j) |
1621 | return -ENOMEM; | |
1622 | ||
89739579 | 1623 | r = add_search_paths(j); |
a963990f | 1624 | if (r < 0) |
50f20cfd | 1625 | goto fail; |
50f20cfd | 1626 | |
a963990f LP |
1627 | *ret = j; |
1628 | return 0; | |
cf244689 | 1629 | |
a963990f LP |
1630 | fail: |
1631 | sd_journal_close(j); | |
87d2c1ff | 1632 | |
a963990f LP |
1633 | return r; |
1634 | } | |
50f20cfd | 1635 | |
b6741478 LP |
1636 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1637 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1638 | sd_journal *j; | |
1639 | char *p; | |
1640 | int r; | |
1641 | ||
1642 | assert_return(machine, -EINVAL); | |
1643 | assert_return(ret, -EINVAL); | |
1644 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1645 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 LP |
1646 | |
1647 | p = strappenda("/run/systemd/machines/", machine); | |
1648 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); | |
1649 | if (r == -ENOENT) | |
1650 | return -EHOSTDOWN; | |
1651 | if (r < 0) | |
1652 | return r; | |
1653 | if (!root) | |
1654 | return -ENODATA; | |
1655 | ||
1656 | if (!streq_ptr(class, "container")) | |
1657 | return -EIO; | |
1658 | ||
1659 | j = journal_new(flags, NULL); | |
1660 | if (!j) | |
1661 | return -ENOMEM; | |
1662 | ||
89739579 LP |
1663 | j->prefix = root; |
1664 | root = NULL; | |
1665 | ||
1666 | r = add_search_paths(j); | |
b6741478 LP |
1667 | if (r < 0) |
1668 | goto fail; | |
1669 | ||
1670 | *ret = j; | |
1671 | return 0; | |
1672 | ||
1673 | fail: | |
1674 | sd_journal_close(j); | |
1675 | return r; | |
1676 | } | |
1677 | ||
a963990f LP |
1678 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1679 | sd_journal *j; | |
1680 | int r; | |
87d2c1ff | 1681 | |
1ae464e0 TA |
1682 | assert_return(ret, -EINVAL); |
1683 | assert_return(path, -EINVAL); | |
1684 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1685 | |
7827b1a1 | 1686 | j = journal_new(flags, path); |
a963990f LP |
1687 | if (!j) |
1688 | return -ENOMEM; | |
3fbf9cbb | 1689 | |
89739579 | 1690 | r = add_root_directory(j, path); |
6fe391c5 | 1691 | if (r < 0) { |
3ac251b8 | 1692 | set_put_error(j, r); |
a963990f | 1693 | goto fail; |
6fe391c5 | 1694 | } |
87d2c1ff LP |
1695 | |
1696 | *ret = j; | |
1697 | return 0; | |
1698 | ||
1699 | fail: | |
1700 | sd_journal_close(j); | |
1701 | ||
1702 | return r; | |
a963990f | 1703 | } |
87d2c1ff | 1704 | |
5302ebe1 ZJS |
1705 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1706 | sd_journal *j; | |
1707 | const char **path; | |
1708 | int r; | |
1709 | ||
1ae464e0 TA |
1710 | assert_return(ret, -EINVAL); |
1711 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1712 | |
1713 | j = journal_new(flags, NULL); | |
1714 | if (!j) | |
1715 | return -ENOMEM; | |
1716 | ||
1717 | STRV_FOREACH(path, paths) { | |
1718 | r = add_any_file(j, *path); | |
1719 | if (r < 0) { | |
da927ba9 | 1720 | log_error_errno(r, "Failed to open %s: %m", *path); |
5302ebe1 ZJS |
1721 | goto fail; |
1722 | } | |
1723 | } | |
1724 | ||
1725 | j->no_new_files = true; | |
1726 | ||
1727 | *ret = j; | |
1728 | return 0; | |
1729 | ||
1730 | fail: | |
1731 | sd_journal_close(j); | |
1732 | ||
1733 | return r; | |
1734 | } | |
1735 | ||
a5344d2c | 1736 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1737 | Directory *d; |
1738 | JournalFile *f; | |
1739 | ||
a5344d2c LP |
1740 | if (!j) |
1741 | return; | |
87d2c1ff | 1742 | |
54b1da83 LP |
1743 | sd_journal_flush_matches(j); |
1744 | ||
c1f906bd | 1745 | while ((f = ordered_hashmap_steal_first(j->files))) |
a963990f | 1746 | journal_file_close(f); |
50f20cfd | 1747 | |
c1f906bd | 1748 | ordered_hashmap_free(j->files); |
260a2be4 | 1749 | |
a963990f LP |
1750 | while ((d = hashmap_first(j->directories_by_path))) |
1751 | remove_directory(j, d); | |
260a2be4 | 1752 | |
a963990f LP |
1753 | while ((d = hashmap_first(j->directories_by_wd))) |
1754 | remove_directory(j, d); | |
87d2c1ff | 1755 | |
a963990f LP |
1756 | hashmap_free(j->directories_by_path); |
1757 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1758 | |
03e334a1 | 1759 | safe_close(j->inotify_fd); |
50f20cfd | 1760 | |
bf807d4d LP |
1761 | if (j->mmap) { |
1762 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1763 | mmap_cache_unref(j->mmap); |
bf807d4d | 1764 | } |
16e9f408 | 1765 | |
7827b1a1 | 1766 | free(j->path); |
89739579 | 1767 | free(j->prefix); |
3c1668da | 1768 | free(j->unique_field); |
6fe391c5 | 1769 | set_free(j->errors); |
87d2c1ff LP |
1770 | free(j); |
1771 | } | |
3fbf9cbb | 1772 | |
a5344d2c | 1773 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1774 | Object *o; |
1775 | JournalFile *f; | |
1776 | int r; | |
1777 | ||
1ae464e0 TA |
1778 | assert_return(j, -EINVAL); |
1779 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1780 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1781 | |
1782 | f = j->current_file; | |
1783 | if (!f) | |
de190aef | 1784 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1785 | |
1786 | if (f->current_offset <= 0) | |
de190aef | 1787 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1788 | |
de190aef | 1789 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1790 | if (r < 0) |
1791 | return r; | |
1792 | ||
1793 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1794 | return 0; |
3fbf9cbb LP |
1795 | } |
1796 | ||
a5344d2c | 1797 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1798 | Object *o; |
1799 | JournalFile *f; | |
1800 | int r; | |
1801 | sd_id128_t id; | |
1802 | ||
1ae464e0 TA |
1803 | assert_return(j, -EINVAL); |
1804 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1805 | |
1806 | f = j->current_file; | |
1807 | if (!f) | |
de190aef | 1808 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1809 | |
1810 | if (f->current_offset <= 0) | |
de190aef | 1811 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1812 | |
de190aef | 1813 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1814 | if (r < 0) |
1815 | return r; | |
1816 | ||
de190aef LP |
1817 | if (ret_boot_id) |
1818 | *ret_boot_id = o->entry.boot_id; | |
1819 | else { | |
1820 | r = sd_id128_get_boot(&id); | |
1821 | if (r < 0) | |
1822 | return r; | |
3fbf9cbb | 1823 | |
de190aef | 1824 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1825 | return -ESTALE; |
de190aef | 1826 | } |
3fbf9cbb | 1827 | |
14a65d65 LP |
1828 | if (ret) |
1829 | *ret = le64toh(o->entry.monotonic); | |
1830 | ||
de190aef | 1831 | return 0; |
3fbf9cbb LP |
1832 | } |
1833 | ||
362a3f81 LP |
1834 | static bool field_is_valid(const char *field) { |
1835 | const char *p; | |
1836 | ||
1837 | assert(field); | |
1838 | ||
1839 | if (isempty(field)) | |
1840 | return false; | |
1841 | ||
1842 | if (startswith(field, "__")) | |
1843 | return false; | |
1844 | ||
1845 | for (p = field; *p; p++) { | |
1846 | ||
1847 | if (*p == '_') | |
1848 | continue; | |
1849 | ||
1850 | if (*p >= 'A' && *p <= 'Z') | |
1851 | continue; | |
1852 | ||
1853 | if (*p >= '0' && *p <= '9') | |
1854 | continue; | |
1855 | ||
1856 | return false; | |
1857 | } | |
1858 | ||
1859 | return true; | |
1860 | } | |
1861 | ||
a5344d2c | 1862 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1863 | JournalFile *f; |
1864 | uint64_t i, n; | |
1865 | size_t field_length; | |
1866 | int r; | |
1867 | Object *o; | |
1868 | ||
1ae464e0 TA |
1869 | assert_return(j, -EINVAL); |
1870 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1871 | assert_return(field, -EINVAL); | |
1872 | assert_return(data, -EINVAL); | |
1873 | assert_return(size, -EINVAL); | |
1874 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
1875 | |
1876 | f = j->current_file; | |
1877 | if (!f) | |
de190aef | 1878 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1879 | |
1880 | if (f->current_offset <= 0) | |
de190aef | 1881 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1882 | |
de190aef | 1883 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1884 | if (r < 0) |
1885 | return r; | |
1886 | ||
1887 | field_length = strlen(field); | |
1888 | ||
1889 | n = journal_file_entry_n_items(o); | |
1890 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1891 | uint64_t p, l; |
1892 | le64_t le_hash; | |
3fbf9cbb | 1893 | size_t t; |
1ec7120e | 1894 | int compression; |
3fbf9cbb LP |
1895 | |
1896 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1897 | le_hash = o->entry.items[i].hash; |
de190aef | 1898 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1899 | if (r < 0) |
1900 | return r; | |
1901 | ||
de190aef | 1902 | if (le_hash != o->data.hash) |
de7b95cd LP |
1903 | return -EBADMSG; |
1904 | ||
3fbf9cbb LP |
1905 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1906 | ||
1ec7120e | 1907 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
1908 | if (compression) { |
1909 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
1910 | if (decompress_startswith(compression, | |
1911 | o->data.payload, l, | |
1912 | &f->compress_buffer, &f->compress_buffer_size, | |
1913 | field, field_length, '=')) { | |
1914 | ||
fa1c4b51 | 1915 | size_t rsize; |
3b1a55e1 ZJS |
1916 | |
1917 | r = decompress_blob(compression, | |
1918 | o->data.payload, l, | |
1919 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
1920 | j->data_threshold); | |
1921 | if (r < 0) | |
1922 | return r; | |
807e17f0 | 1923 | |
3b1a55e1 ZJS |
1924 | *data = f->compress_buffer; |
1925 | *size = (size_t) rsize; | |
807e17f0 | 1926 | |
3b1a55e1 ZJS |
1927 | return 0; |
1928 | } | |
1929 | #else | |
1930 | return -EPROTONOSUPPORT; | |
1931 | #endif | |
807e17f0 LP |
1932 | } else if (l >= field_length+1 && |
1933 | memcmp(o->data.payload, field, field_length) == 0 && | |
1934 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1935 | |
161e54f8 | 1936 | t = (size_t) l; |
3fbf9cbb | 1937 | |
161e54f8 LP |
1938 | if ((uint64_t) t != l) |
1939 | return -E2BIG; | |
3fbf9cbb | 1940 | |
161e54f8 LP |
1941 | *data = o->data.payload; |
1942 | *size = t; | |
3fbf9cbb | 1943 | |
99613ec5 | 1944 | return 0; |
161e54f8 | 1945 | } |
3fbf9cbb | 1946 | |
de190aef | 1947 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1948 | if (r < 0) |
1949 | return r; | |
3fbf9cbb LP |
1950 | } |
1951 | ||
de190aef | 1952 | return -ENOENT; |
3fbf9cbb LP |
1953 | } |
1954 | ||
93b73b06 | 1955 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
1956 | size_t t; |
1957 | uint64_t l; | |
3b1a55e1 | 1958 | int compression; |
3c1668da LP |
1959 | |
1960 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
1961 | t = (size_t) l; | |
1962 | ||
1963 | /* We can't read objects larger than 4G on a 32bit machine */ | |
1964 | if ((uint64_t) t != l) | |
1965 | return -E2BIG; | |
1966 | ||
1ec7120e ZJS |
1967 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
1968 | if (compression) { | |
3b1a55e1 | 1969 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 1970 | size_t rsize; |
3b1a55e1 | 1971 | int r; |
3c1668da | 1972 | |
1ec7120e ZJS |
1973 | r = decompress_blob(compression, |
1974 | o->data.payload, l, &f->compress_buffer, | |
1975 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
1976 | if (r < 0) | |
1977 | return r; | |
3c1668da LP |
1978 | |
1979 | *data = f->compress_buffer; | |
1980 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
1981 | #else |
1982 | return -EPROTONOSUPPORT; | |
1983 | #endif | |
3c1668da LP |
1984 | } else { |
1985 | *data = o->data.payload; | |
1986 | *size = t; | |
1987 | } | |
1988 | ||
1989 | return 0; | |
1990 | } | |
1991 | ||
a5344d2c | 1992 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 1993 | JournalFile *f; |
3c1668da | 1994 | uint64_t p, n; |
4fd052ae | 1995 | le64_t le_hash; |
3fbf9cbb LP |
1996 | int r; |
1997 | Object *o; | |
1998 | ||
1ae464e0 TA |
1999 | assert_return(j, -EINVAL); |
2000 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2001 | assert_return(data, -EINVAL); | |
2002 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2003 | |
2004 | f = j->current_file; | |
2005 | if (!f) | |
de190aef | 2006 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2007 | |
2008 | if (f->current_offset <= 0) | |
de190aef | 2009 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2010 | |
de190aef | 2011 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2012 | if (r < 0) |
2013 | return r; | |
2014 | ||
2015 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2016 | if (j->current_field >= n) |
3fbf9cbb LP |
2017 | return 0; |
2018 | ||
7210bfb3 | 2019 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2020 | le_hash = o->entry.items[j->current_field].hash; |
2021 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2022 | if (r < 0) |
2023 | return r; | |
2024 | ||
de190aef | 2025 | if (le_hash != o->data.hash) |
de7b95cd LP |
2026 | return -EBADMSG; |
2027 | ||
93b73b06 | 2028 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2029 | if (r < 0) |
2030 | return r; | |
3fbf9cbb | 2031 | |
7210bfb3 | 2032 | j->current_field ++; |
3fbf9cbb LP |
2033 | |
2034 | return 1; | |
2035 | } | |
c2373f84 | 2036 | |
a5344d2c LP |
2037 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2038 | if (!j) | |
2039 | return; | |
8725d60a LP |
2040 | |
2041 | j->current_field = 0; | |
c2373f84 | 2042 | } |
50f20cfd | 2043 | |
a5344d2c | 2044 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2045 | int r; |
2046 | ||
1ae464e0 TA |
2047 | assert_return(j, -EINVAL); |
2048 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2049 | |
a963990f LP |
2050 | if (j->inotify_fd >= 0) |
2051 | return j->inotify_fd; | |
2052 | ||
2053 | r = allocate_inotify(j); | |
2054 | if (r < 0) | |
2055 | return r; | |
2056 | ||
2057 | /* Iterate through all dirs again, to add them to the | |
2058 | * inotify */ | |
5302ebe1 ZJS |
2059 | if (j->no_new_files) |
2060 | r = add_current_paths(j); | |
2061 | else if (j->path) | |
89739579 | 2062 | r = add_root_directory(j, j->path); |
7827b1a1 | 2063 | else |
89739579 | 2064 | r = add_search_paths(j); |
a963990f LP |
2065 | if (r < 0) |
2066 | return r; | |
2067 | ||
50f20cfd LP |
2068 | return j->inotify_fd; |
2069 | } | |
2070 | ||
ee531d94 LP |
2071 | _public_ int sd_journal_get_events(sd_journal *j) { |
2072 | int fd; | |
2073 | ||
1ae464e0 TA |
2074 | assert_return(j, -EINVAL); |
2075 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2076 | |
2077 | fd = sd_journal_get_fd(j); | |
2078 | if (fd < 0) | |
2079 | return fd; | |
2080 | ||
2081 | return POLLIN; | |
2082 | } | |
2083 | ||
39c155ea LP |
2084 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2085 | int fd; | |
2086 | ||
1ae464e0 TA |
2087 | assert_return(j, -EINVAL); |
2088 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2089 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2090 | |
2091 | fd = sd_journal_get_fd(j); | |
2092 | if (fd < 0) | |
2093 | return fd; | |
2094 | ||
2095 | if (!j->on_network) { | |
2096 | *timeout_usec = (uint64_t) -1; | |
2097 | return 0; | |
2098 | } | |
2099 | ||
2100 | /* If we are on the network we need to regularly check for | |
2101 | * changes manually */ | |
2102 | ||
2103 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2104 | return 1; | |
2105 | } | |
2106 | ||
50f20cfd | 2107 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2108 | Directory *d; |
50f20cfd LP |
2109 | int r; |
2110 | ||
2111 | assert(j); | |
2112 | assert(e); | |
2113 | ||
2114 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2115 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2116 | if (d) { | |
2117 | sd_id128_t id; | |
50f20cfd | 2118 | |
de2c3907 LP |
2119 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2120 | (endswith(e->name, ".journal") || | |
2121 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2122 | |
2123 | /* Event for a journal file */ | |
2124 | ||
2125 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2126 | r = add_file(j, d->path, e->name); |
6fe391c5 | 2127 | if (r < 0) { |
c33b3297 MS |
2128 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
2129 | d->path, e->name); | |
3ac251b8 | 2130 | set_put_error(j, r); |
6fe391c5 | 2131 | } |
a963990f | 2132 | |
5e6870ea | 2133 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2134 | |
a963990f | 2135 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2136 | if (r < 0) |
da927ba9 | 2137 | log_debug_errno(r, "Failed to remove file %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2138 | } |
2139 | ||
a963990f | 2140 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2141 | |
a963990f | 2142 | /* Event for a subdirectory */ |
50f20cfd | 2143 | |
a963990f LP |
2144 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2145 | r = remove_directory(j, d); | |
50f20cfd | 2146 | if (r < 0) |
da927ba9 | 2147 | log_debug_errno(r, "Failed to remove directory %s: %m", d->path); |
50f20cfd LP |
2148 | } |
2149 | ||
50f20cfd | 2150 | |
a963990f | 2151 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2152 | |
a963990f | 2153 | /* Event for root directory */ |
50f20cfd | 2154 | |
a963990f LP |
2155 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2156 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2157 | if (r < 0) |
da927ba9 | 2158 | log_debug_errno(r, "Failed to add directory %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2159 | } |
2160 | } | |
2161 | ||
2162 | return; | |
2163 | } | |
2164 | ||
2165 | if (e->mask & IN_IGNORED) | |
2166 | return; | |
2167 | ||
2168 | log_warning("Unknown inotify event."); | |
2169 | } | |
2170 | ||
a963990f LP |
2171 | static int determine_change(sd_journal *j) { |
2172 | bool b; | |
2173 | ||
2174 | assert(j); | |
2175 | ||
2176 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2177 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2178 | ||
2179 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2180 | } | |
2181 | ||
a5344d2c | 2182 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2183 | bool got_something = false; |
50f20cfd | 2184 | |
1ae464e0 TA |
2185 | assert_return(j, -EINVAL); |
2186 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2187 | |
39c155ea LP |
2188 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2189 | ||
50f20cfd | 2190 | for (;;) { |
f7c1ad4f | 2191 | uint8_t buffer[INOTIFY_EVENT_MAX] _alignas_(struct inotify_event); |
50f20cfd LP |
2192 | struct inotify_event *e; |
2193 | ssize_t l; | |
2194 | ||
2195 | l = read(j->inotify_fd, buffer, sizeof(buffer)); | |
2196 | if (l < 0) { | |
a963990f LP |
2197 | if (errno == EAGAIN || errno == EINTR) |
2198 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2199 | |
2200 | return -errno; | |
2201 | } | |
2202 | ||
a963990f LP |
2203 | got_something = true; |
2204 | ||
f7c1ad4f | 2205 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2206 | process_inotify_event(j, e); |
50f20cfd LP |
2207 | } |
2208 | } | |
6ad1d1c3 | 2209 | |
e02d1cf7 | 2210 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2211 | int r; |
39c155ea | 2212 | uint64_t t; |
e02d1cf7 | 2213 | |
1ae464e0 TA |
2214 | assert_return(j, -EINVAL); |
2215 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2216 | |
a963990f LP |
2217 | if (j->inotify_fd < 0) { |
2218 | ||
2219 | /* This is the first invocation, hence create the | |
2220 | * inotify watch */ | |
2221 | r = sd_journal_get_fd(j); | |
2222 | if (r < 0) | |
2223 | return r; | |
2224 | ||
2225 | /* The journal might have changed since the context | |
2226 | * object was created and we weren't watching before, | |
2227 | * hence don't wait for anything, and return | |
2228 | * immediately. */ | |
2229 | return determine_change(j); | |
2230 | } | |
2231 | ||
39c155ea LP |
2232 | r = sd_journal_get_timeout(j, &t); |
2233 | if (r < 0) | |
2234 | return r; | |
2235 | ||
2236 | if (t != (uint64_t) -1) { | |
2237 | usec_t n; | |
2238 | ||
2239 | n = now(CLOCK_MONOTONIC); | |
2240 | t = t > n ? t - n : 0; | |
85210bff | 2241 | |
39c155ea LP |
2242 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2243 | timeout_usec = t; | |
85210bff LP |
2244 | } |
2245 | ||
a963990f LP |
2246 | do { |
2247 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2248 | } while (r == -EINTR); | |
e02d1cf7 LP |
2249 | |
2250 | if (r < 0) | |
2251 | return r; | |
2252 | ||
a963990f | 2253 | return sd_journal_process(j); |
e02d1cf7 LP |
2254 | } |
2255 | ||
08984293 LP |
2256 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2257 | Iterator i; | |
2258 | JournalFile *f; | |
2259 | bool first = true; | |
581483bf | 2260 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2261 | int r; |
2262 | ||
1ae464e0 TA |
2263 | assert_return(j, -EINVAL); |
2264 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2265 | assert_return(from || to, -EINVAL); | |
2266 | assert_return(from != to, -EINVAL); | |
08984293 | 2267 | |
c1f906bd | 2268 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2269 | usec_t fr, t; |
2270 | ||
2271 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2272 | if (r == -ENOENT) |
2273 | continue; | |
08984293 LP |
2274 | if (r < 0) |
2275 | return r; | |
2276 | if (r == 0) | |
2277 | continue; | |
2278 | ||
2279 | if (first) { | |
581483bf LP |
2280 | fmin = fr; |
2281 | tmax = t; | |
08984293 LP |
2282 | first = false; |
2283 | } else { | |
581483bf LP |
2284 | fmin = MIN(fr, fmin); |
2285 | tmax = MAX(t, tmax); | |
08984293 LP |
2286 | } |
2287 | } | |
2288 | ||
581483bf LP |
2289 | if (from) |
2290 | *from = fmin; | |
2291 | if (to) | |
2292 | *to = tmax; | |
2293 | ||
08984293 LP |
2294 | return first ? 0 : 1; |
2295 | } | |
2296 | ||
2297 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2298 | Iterator i; | |
2299 | JournalFile *f; | |
1651e2c6 | 2300 | bool found = false; |
08984293 LP |
2301 | int r; |
2302 | ||
1ae464e0 TA |
2303 | assert_return(j, -EINVAL); |
2304 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2305 | assert_return(from || to, -EINVAL); | |
2306 | assert_return(from != to, -EINVAL); | |
08984293 | 2307 | |
c1f906bd | 2308 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2309 | usec_t fr, t; |
2310 | ||
2311 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2312 | if (r == -ENOENT) |
2313 | continue; | |
08984293 LP |
2314 | if (r < 0) |
2315 | return r; | |
2316 | if (r == 0) | |
2317 | continue; | |
2318 | ||
1651e2c6 | 2319 | if (found) { |
08984293 | 2320 | if (from) |
1651e2c6 | 2321 | *from = MIN(fr, *from); |
08984293 | 2322 | if (to) |
1651e2c6 | 2323 | *to = MAX(t, *to); |
08984293 LP |
2324 | } else { |
2325 | if (from) | |
1651e2c6 | 2326 | *from = fr; |
08984293 | 2327 | if (to) |
1651e2c6 ZJS |
2328 | *to = t; |
2329 | found = true; | |
08984293 LP |
2330 | } |
2331 | } | |
2332 | ||
1651e2c6 | 2333 | return found; |
08984293 LP |
2334 | } |
2335 | ||
dca6219e LP |
2336 | void journal_print_header(sd_journal *j) { |
2337 | Iterator i; | |
2338 | JournalFile *f; | |
2339 | bool newline = false; | |
2340 | ||
2341 | assert(j); | |
2342 | ||
c1f906bd | 2343 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2344 | if (newline) |
2345 | putchar('\n'); | |
2346 | else | |
2347 | newline = true; | |
2348 | ||
2349 | journal_file_print_header(f); | |
2350 | } | |
2351 | } | |
08984293 | 2352 | |
a1a03e30 LP |
2353 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2354 | Iterator i; | |
2355 | JournalFile *f; | |
2356 | uint64_t sum = 0; | |
2357 | ||
1ae464e0 TA |
2358 | assert_return(j, -EINVAL); |
2359 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2360 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2361 | |
c1f906bd | 2362 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2363 | struct stat st; |
2364 | ||
2365 | if (fstat(f->fd, &st) < 0) | |
2366 | return -errno; | |
2367 | ||
2368 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2369 | } | |
2370 | ||
2371 | *bytes = sum; | |
2372 | return 0; | |
2373 | } | |
2374 | ||
3c1668da LP |
2375 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2376 | char *f; | |
2377 | ||
1ae464e0 TA |
2378 | assert_return(j, -EINVAL); |
2379 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2380 | assert_return(!isempty(field), -EINVAL); | |
2381 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2382 | |
2383 | f = strdup(field); | |
2384 | if (!f) | |
2385 | return -ENOMEM; | |
2386 | ||
2387 | free(j->unique_field); | |
2388 | j->unique_field = f; | |
2389 | j->unique_file = NULL; | |
2390 | j->unique_offset = 0; | |
360af4cf | 2391 | j->unique_file_lost = false; |
3c1668da LP |
2392 | |
2393 | return 0; | |
2394 | } | |
2395 | ||
2396 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2397 | size_t k; |
19a2bd80 | 2398 | |
1ae464e0 TA |
2399 | assert_return(j, -EINVAL); |
2400 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2401 | assert_return(data, -EINVAL); | |
2402 | assert_return(l, -EINVAL); | |
2403 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2404 | |
3c1668da | 2405 | k = strlen(j->unique_field); |
19a2bd80 | 2406 | |
3c1668da | 2407 | if (!j->unique_file) { |
360af4cf ZJS |
2408 | if (j->unique_file_lost) |
2409 | return 0; | |
2410 | ||
c1f906bd | 2411 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2412 | if (!j->unique_file) |
2413 | return 0; | |
360af4cf | 2414 | |
3c1668da LP |
2415 | j->unique_offset = 0; |
2416 | } | |
19a2bd80 | 2417 | |
3c1668da LP |
2418 | for (;;) { |
2419 | JournalFile *of; | |
2420 | Iterator i; | |
ae97089d | 2421 | Object *o; |
3c1668da LP |
2422 | const void *odata; |
2423 | size_t ol; | |
2424 | bool found; | |
ae97089d | 2425 | int r; |
3c1668da | 2426 | |
bdc02927 | 2427 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2428 | if (j->unique_offset == 0) { |
2429 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2430 | if (r < 0) | |
2431 | return r; | |
2432 | ||
2433 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2434 | } else { | |
2435 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2436 | if (r < 0) | |
2437 | return r; | |
2438 | ||
2439 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2440 | } | |
2441 | ||
2442 | /* We reached the end of the list? Then start again, with the next file */ | |
2443 | if (j->unique_offset == 0) { | |
c1f906bd | 2444 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2445 | if (!j->unique_file) |
3c1668da LP |
2446 | return 0; |
2447 | ||
3c1668da LP |
2448 | continue; |
2449 | } | |
2450 | ||
d05089d8 MS |
2451 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2452 | * instead, so that we can look at this data object at the same | |
3c1668da | 2453 | * time as one on another file */ |
d05089d8 | 2454 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2455 | if (r < 0) |
2456 | return r; | |
2457 | ||
2458 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2459 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2460 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2461 | j->unique_file->path, j->unique_offset, |
2462 | o->object.type, OBJECT_DATA); | |
3c1668da | 2463 | return -EBADMSG; |
ae97089d ZJS |
2464 | } |
2465 | ||
93b73b06 | 2466 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2467 | if (r < 0) |
2468 | return r; | |
2469 | ||
0f99f74a ZJS |
2470 | /* Check if we have at least the field name and "=". */ |
2471 | if (ol <= k) { | |
2472 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2473 | j->unique_file->path, j->unique_offset, | |
2474 | ol, k + 1); | |
2475 | return -EBADMSG; | |
2476 | } | |
2477 | ||
2478 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2479 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2480 | j->unique_file->path, j->unique_offset, | |
2481 | j->unique_field); | |
2482 | return -EBADMSG; | |
2483 | } | |
2484 | ||
3c1668da LP |
2485 | /* OK, now let's see if we already returned this data |
2486 | * object by checking if it exists in the earlier | |
2487 | * traversed files. */ | |
2488 | found = false; | |
c1f906bd | 2489 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2490 | Object *oo; |
2491 | uint64_t op; | |
2492 | ||
2493 | if (of == j->unique_file) | |
2494 | break; | |
2495 | ||
2496 | /* Skip this file it didn't have any fields | |
2497 | * indexed */ | |
2498 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2499 | le64toh(of->header->n_fields) <= 0) | |
2500 | continue; | |
2501 | ||
2502 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2503 | if (r < 0) | |
2504 | return r; | |
2505 | ||
2506 | if (r > 0) | |
2507 | found = true; | |
2508 | } | |
2509 | ||
06cc69d4 JJ |
2510 | if (found) |
2511 | continue; | |
2512 | ||
93b73b06 | 2513 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2514 | if (r < 0) |
2515 | return r; | |
2516 | ||
2517 | return 1; | |
2518 | } | |
2519 | } | |
2520 | ||
115646c7 | 2521 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2522 | if (!j) |
2523 | return; | |
2524 | ||
2525 | j->unique_file = NULL; | |
2526 | j->unique_offset = 0; | |
360af4cf | 2527 | j->unique_file_lost = false; |
3c1668da | 2528 | } |
85210bff LP |
2529 | |
2530 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
1ae464e0 TA |
2531 | assert_return(j, -EINVAL); |
2532 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2533 | |
2534 | return !j->on_network; | |
2535 | } | |
d4205751 LP |
2536 | |
2537 | static char *lookup_field(const char *field, void *userdata) { | |
2538 | sd_journal *j = userdata; | |
2539 | const void *data; | |
2540 | size_t size, d; | |
2541 | int r; | |
2542 | ||
2543 | assert(field); | |
2544 | assert(j); | |
2545 | ||
2546 | r = sd_journal_get_data(j, field, &data, &size); | |
2547 | if (r < 0 || | |
2548 | size > REPLACE_VAR_MAX) | |
2549 | return strdup(field); | |
2550 | ||
2551 | d = strlen(field) + 1; | |
2552 | ||
2553 | return strndup((const char*) data + d, size - d); | |
2554 | } | |
2555 | ||
2556 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2557 | const void *data; | |
2558 | size_t size; | |
2559 | sd_id128_t id; | |
2560 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2561 | char *t; | |
2562 | int r; | |
2563 | ||
1ae464e0 TA |
2564 | assert_return(j, -EINVAL); |
2565 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2566 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2567 | |
2568 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2569 | if (r < 0) | |
2570 | return r; | |
2571 | ||
2572 | cid = strndup((const char*) data + 11, size - 11); | |
2573 | if (!cid) | |
2574 | return -ENOMEM; | |
2575 | ||
2576 | r = sd_id128_from_string(cid, &id); | |
2577 | if (r < 0) | |
2578 | return r; | |
2579 | ||
844ec79b | 2580 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2581 | if (r < 0) |
2582 | return r; | |
2583 | ||
2584 | t = replace_var(text, lookup_field, j); | |
2585 | if (!t) | |
2586 | return -ENOMEM; | |
2587 | ||
2588 | *ret = t; | |
2589 | return 0; | |
2590 | } | |
8f1e860f LP |
2591 | |
2592 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2593 | assert_return(ret, -EINVAL); |
8f1e860f | 2594 | |
844ec79b | 2595 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2596 | } |
93b73b06 LP |
2597 | |
2598 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2599 | assert_return(j, -EINVAL); |
2600 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2601 | |
2602 | j->data_threshold = sz; | |
2603 | return 0; | |
2604 | } | |
2605 | ||
2606 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2607 | assert_return(j, -EINVAL); |
2608 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2609 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2610 | |
2611 | *sz = j->data_threshold; | |
2612 | return 0; | |
2613 | } |