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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> | |
0a6f50c0 | 27 | #include <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" |
6482f626 | 45 | #include "formats-util.h" |
87d2c1ff | 46 | |
9e8abdf0 LP |
47 | #define JOURNAL_FILES_MAX 7168 |
48 | ||
85210bff LP |
49 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
50 | ||
d4205751 LP |
51 | #define REPLACE_VAR_MAX 256 |
52 | ||
93b73b06 LP |
53 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
54 | ||
a9a245c1 ZJS |
55 | static void remove_file_real(sd_journal *j, JournalFile *f); |
56 | ||
a65f06bb ZJS |
57 | static bool journal_pid_changed(sd_journal *j) { |
58 | assert(j); | |
59 | ||
60 | /* We don't support people creating a journal object and | |
61 | * keeping it around over a fork(). Let's complain. */ | |
62 | ||
63 | return j->original_pid != getpid(); | |
64 | } | |
65 | ||
6fe391c5 ZJS |
66 | /* We return an error here only if we didn't manage to |
67 | memorize the real error. */ | |
3ac251b8 LP |
68 | static int set_put_error(sd_journal *j, int r) { |
69 | int k; | |
70 | ||
6fe391c5 ZJS |
71 | if (r >= 0) |
72 | return r; | |
73 | ||
d5099efc | 74 | k = set_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
75 | if (k < 0) |
76 | return k; | |
77 | ||
78 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
79 | } |
80 | ||
de190aef | 81 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
82 | Iterator i; |
83 | JournalFile *f; | |
84 | ||
85 | assert(j); | |
86 | ||
87 | j->current_file = NULL; | |
88 | j->current_field = 0; | |
89 | ||
c1f906bd | 90 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 91 | journal_file_reset_location(f); |
8f9b6cd9 LP |
92 | } |
93 | ||
de190aef LP |
94 | static void reset_location(sd_journal *j) { |
95 | assert(j); | |
96 | ||
97 | detach_location(j); | |
98 | zero(j->current_location); | |
99 | } | |
100 | ||
a87247dd | 101 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 102 | assert(l); |
a87247dd | 103 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
104 | assert(f); |
105 | assert(o->object.type == OBJECT_ENTRY); | |
106 | ||
a87247dd | 107 | l->type = type; |
de190aef LP |
108 | l->seqnum = le64toh(o->entry.seqnum); |
109 | l->seqnum_id = f->header->seqnum_id; | |
110 | l->realtime = le64toh(o->entry.realtime); | |
111 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 112 | l->boot_id = o->entry.boot_id; |
de190aef LP |
113 | l->xor_hash = le64toh(o->entry.xor_hash); |
114 | ||
115 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
116 | } | |
117 | ||
1eb6332d | 118 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
119 | assert(j); |
120 | assert(f); | |
121 | assert(o); | |
122 | ||
1eb6332d | 123 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
124 | |
125 | j->current_file = f; | |
126 | j->current_field = 0; | |
127 | ||
6573ef05 MS |
128 | /* Let f know its candidate entry was picked. */ |
129 | assert(f->location_type == LOCATION_SEEK); | |
130 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
131 | } |
132 | ||
cbdca852 LP |
133 | static int match_is_valid(const void *data, size_t size) { |
134 | const char *b, *p; | |
135 | ||
136 | assert(data); | |
137 | ||
138 | if (size < 2) | |
139 | return false; | |
140 | ||
141 | if (startswith(data, "__")) | |
142 | return false; | |
143 | ||
144 | b = data; | |
145 | for (p = b; p < b + size; p++) { | |
146 | ||
147 | if (*p == '=') | |
148 | return p > b; | |
149 | ||
150 | if (*p == '_') | |
151 | continue; | |
152 | ||
153 | if (*p >= 'A' && *p <= 'Z') | |
154 | continue; | |
155 | ||
156 | if (*p >= '0' && *p <= '9') | |
157 | continue; | |
158 | ||
159 | return false; | |
160 | } | |
161 | ||
162 | return false; | |
163 | } | |
164 | ||
165 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
166 | const uint8_t *a = _a, *b = _b; |
167 | size_t j; | |
de190aef LP |
168 | |
169 | for (j = 0; j < s && j < t; j++) { | |
170 | ||
de190aef | 171 | if (a[j] != b[j]) |
cbdca852 | 172 | return false; |
de190aef | 173 | |
cbdca852 LP |
174 | if (a[j] == '=') |
175 | return true; | |
de190aef LP |
176 | } |
177 | ||
bc302926 | 178 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
179 | } |
180 | ||
181 | static Match *match_new(Match *p, MatchType t) { | |
182 | Match *m; | |
183 | ||
184 | m = new0(Match, 1); | |
185 | if (!m) | |
186 | return NULL; | |
187 | ||
188 | m->type = t; | |
189 | ||
190 | if (p) { | |
191 | m->parent = p; | |
71fda00f | 192 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
193 | } |
194 | ||
195 | return m; | |
196 | } | |
197 | ||
198 | static void match_free(Match *m) { | |
199 | assert(m); | |
200 | ||
201 | while (m->matches) | |
202 | match_free(m->matches); | |
203 | ||
204 | if (m->parent) | |
71fda00f | 205 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
206 | |
207 | free(m->data); | |
208 | free(m); | |
209 | } | |
210 | ||
211 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 212 | if (!m || m->matches) |
cbdca852 LP |
213 | return; |
214 | ||
215 | match_free(m); | |
de190aef LP |
216 | } |
217 | ||
a5344d2c | 218 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 219 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 220 | le64_t le_hash; |
87d2c1ff | 221 | |
1ae464e0 TA |
222 | assert_return(j, -EINVAL); |
223 | assert_return(!journal_pid_changed(j), -ECHILD); | |
224 | assert_return(data, -EINVAL); | |
cbdca852 LP |
225 | |
226 | if (size == 0) | |
227 | size = strlen(data); | |
228 | ||
1ae464e0 | 229 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 230 | |
cd34b3c6 HH |
231 | /* level 0: AND term |
232 | * level 1: OR terms | |
233 | * level 2: AND terms | |
234 | * level 3: OR terms | |
235 | * level 4: concrete matches */ | |
cbdca852 LP |
236 | |
237 | if (!j->level0) { | |
cd34b3c6 | 238 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
239 | if (!j->level0) |
240 | return -ENOMEM; | |
241 | } | |
242 | ||
243 | if (!j->level1) { | |
cd34b3c6 | 244 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
245 | if (!j->level1) |
246 | return -ENOMEM; | |
247 | } | |
248 | ||
cd34b3c6 HH |
249 | if (!j->level2) { |
250 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
251 | if (!j->level2) | |
252 | return -ENOMEM; | |
253 | } | |
254 | ||
255 | assert(j->level0->type == MATCH_AND_TERM); | |
256 | assert(j->level1->type == MATCH_OR_TERM); | |
257 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 258 | |
de190aef LP |
259 | le_hash = htole64(hash64(data, size)); |
260 | ||
cd34b3c6 HH |
261 | LIST_FOREACH(matches, l3, j->level2->matches) { |
262 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 263 | |
cd34b3c6 HH |
264 | LIST_FOREACH(matches, l4, l3->matches) { |
265 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 266 | |
cbdca852 LP |
267 | /* Exactly the same match already? Then ignore |
268 | * this addition */ | |
cd34b3c6 HH |
269 | if (l4->le_hash == le_hash && |
270 | l4->size == size && | |
271 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
272 | return 0; |
273 | ||
274 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
275 | if (same_field(data, size, l4->data, l4->size)) { |
276 | add_here = l3; | |
cbdca852 LP |
277 | break; |
278 | } | |
279 | } | |
280 | ||
281 | if (add_here) | |
282 | break; | |
de190aef LP |
283 | } |
284 | ||
cbdca852 | 285 | if (!add_here) { |
cd34b3c6 | 286 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
287 | if (!add_here) |
288 | goto fail; | |
289 | } | |
290 | ||
291 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 292 | if (!m) |
cbdca852 | 293 | goto fail; |
87d2c1ff | 294 | |
cbdca852 | 295 | m->le_hash = le_hash; |
1cc101f1 | 296 | m->size = size; |
cbdca852 LP |
297 | m->data = memdup(data, size); |
298 | if (!m->data) | |
299 | goto fail; | |
300 | ||
301 | detach_location(j); | |
302 | ||
303 | return 0; | |
304 | ||
305 | fail: | |
c5a10d9c ZJS |
306 | match_free_if_empty(add_here); |
307 | match_free_if_empty(j->level2); | |
308 | match_free_if_empty(j->level1); | |
309 | match_free_if_empty(j->level0); | |
cbdca852 LP |
310 | |
311 | return -ENOMEM; | |
312 | } | |
313 | ||
cd34b3c6 | 314 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
315 | assert_return(j, -EINVAL); |
316 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 317 | |
cbdca852 LP |
318 | if (!j->level0) |
319 | return 0; | |
320 | ||
321 | if (!j->level1) | |
322 | return 0; | |
323 | ||
324 | if (!j->level1->matches) | |
325 | return 0; | |
326 | ||
cd34b3c6 HH |
327 | j->level1 = NULL; |
328 | j->level2 = NULL; | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
334 | assert_return(j, -EINVAL); |
335 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
336 | |
337 | if (!j->level0) | |
338 | return 0; | |
339 | ||
340 | if (!j->level1) | |
341 | return 0; | |
342 | ||
343 | if (!j->level2) | |
344 | return 0; | |
345 | ||
346 | if (!j->level2->matches) | |
347 | return 0; | |
cbdca852 | 348 | |
cd34b3c6 | 349 | j->level2 = NULL; |
cbdca852 LP |
350 | return 0; |
351 | } | |
352 | ||
353 | static char *match_make_string(Match *m) { | |
354 | char *p, *r; | |
355 | Match *i; | |
356 | bool enclose = false; | |
357 | ||
358 | if (!m) | |
4ad16808 | 359 | return strdup("none"); |
cbdca852 LP |
360 | |
361 | if (m->type == MATCH_DISCRETE) | |
362 | return strndup(m->data, m->size); | |
363 | ||
364 | p = NULL; | |
365 | LIST_FOREACH(matches, i, m->matches) { | |
366 | char *t, *k; | |
367 | ||
368 | t = match_make_string(i); | |
369 | if (!t) { | |
370 | free(p); | |
371 | return NULL; | |
372 | } | |
373 | ||
374 | if (p) { | |
b7def684 | 375 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
376 | free(p); |
377 | free(t); | |
378 | ||
379 | if (!k) | |
380 | return NULL; | |
381 | ||
382 | p = k; | |
383 | ||
384 | enclose = true; | |
bc302926 | 385 | } else |
cbdca852 | 386 | p = t; |
87d2c1ff LP |
387 | } |
388 | ||
cbdca852 | 389 | if (enclose) { |
b7def684 | 390 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
391 | free(p); |
392 | return r; | |
393 | } | |
87d2c1ff | 394 | |
cbdca852 LP |
395 | return p; |
396 | } | |
de7b95cd | 397 | |
cbdca852 LP |
398 | char *journal_make_match_string(sd_journal *j) { |
399 | assert(j); | |
8f9b6cd9 | 400 | |
cbdca852 | 401 | return match_make_string(j->level0); |
87d2c1ff LP |
402 | } |
403 | ||
a5344d2c LP |
404 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
405 | if (!j) | |
406 | return; | |
87d2c1ff | 407 | |
cbdca852 LP |
408 | if (j->level0) |
409 | match_free(j->level0); | |
de7b95cd | 410 | |
cd34b3c6 | 411 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 412 | |
de190aef | 413 | detach_location(j); |
87d2c1ff LP |
414 | } |
415 | ||
487d3720 MS |
416 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
417 | assert(f); | |
de190aef | 418 | assert(l); |
487d3720 | 419 | assert(f->location_type == LOCATION_SEEK); |
a87247dd | 420 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
421 | |
422 | if (l->monotonic_set && | |
487d3720 | 423 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 424 | l->realtime_set && |
487d3720 | 425 | f->current_realtime == l->realtime && |
de190aef | 426 | l->xor_hash_set && |
487d3720 | 427 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
428 | return 0; |
429 | ||
430 | if (l->seqnum_set && | |
487d3720 | 431 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 432 | |
487d3720 | 433 | if (f->current_seqnum < l->seqnum) |
de190aef | 434 | return -1; |
487d3720 | 435 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
436 | return 1; |
437 | } | |
438 | ||
439 | if (l->monotonic_set && | |
487d3720 | 440 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 441 | |
487d3720 | 442 | if (f->current_monotonic < l->monotonic) |
de190aef | 443 | return -1; |
487d3720 | 444 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
445 | return 1; |
446 | } | |
447 | ||
448 | if (l->realtime_set) { | |
449 | ||
487d3720 | 450 | if (f->current_realtime < l->realtime) |
de190aef | 451 | return -1; |
487d3720 | 452 | if (f->current_realtime > l->realtime) |
de190aef LP |
453 | return 1; |
454 | } | |
455 | ||
456 | if (l->xor_hash_set) { | |
de190aef | 457 | |
487d3720 | 458 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 459 | return -1; |
487d3720 | 460 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
461 | return 1; |
462 | } | |
463 | ||
464 | return 0; | |
465 | } | |
466 | ||
cbdca852 LP |
467 | static int next_for_match( |
468 | sd_journal *j, | |
469 | Match *m, | |
470 | JournalFile *f, | |
471 | uint64_t after_offset, | |
472 | direction_t direction, | |
473 | Object **ret, | |
474 | uint64_t *offset) { | |
475 | ||
de7b95cd | 476 | int r; |
cbdca852 LP |
477 | uint64_t np = 0; |
478 | Object *n; | |
de7b95cd LP |
479 | |
480 | assert(j); | |
cbdca852 LP |
481 | assert(m); |
482 | assert(f); | |
de7b95cd | 483 | |
cbdca852 LP |
484 | if (m->type == MATCH_DISCRETE) { |
485 | uint64_t dp; | |
de190aef | 486 | |
cbdca852 | 487 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
488 | if (r <= 0) |
489 | return r; | |
490 | ||
cbdca852 | 491 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 492 | |
cbdca852 LP |
493 | } else if (m->type == MATCH_OR_TERM) { |
494 | Match *i; | |
de7b95cd | 495 | |
cbdca852 | 496 | /* Find the earliest match beyond after_offset */ |
de190aef | 497 | |
cbdca852 LP |
498 | LIST_FOREACH(matches, i, m->matches) { |
499 | uint64_t cp; | |
de190aef | 500 | |
cbdca852 | 501 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
502 | if (r < 0) |
503 | return r; | |
cbdca852 | 504 | else if (r > 0) { |
bc302926 | 505 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
506 | np = cp; |
507 | } | |
508 | } | |
b4e5f920 | 509 | |
bc302926 ZJS |
510 | if (np == 0) |
511 | return 0; | |
512 | ||
cbdca852 | 513 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 514 | Match *i, *last_moved; |
de190aef | 515 | |
cbdca852 | 516 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 517 | * this until we find an offset that matches for all |
cbdca852 | 518 | * matches. */ |
de190aef | 519 | |
cbdca852 LP |
520 | if (!m->matches) |
521 | return 0; | |
de7b95cd | 522 | |
2bc8ca0c ZJS |
523 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
524 | if (r <= 0) | |
525 | return r; | |
de190aef | 526 | |
2bc8ca0c ZJS |
527 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
528 | last_moved = m->matches; | |
de190aef | 529 | |
2bc8ca0c ZJS |
530 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
531 | uint64_t cp; | |
de190aef | 532 | |
2bc8ca0c ZJS |
533 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
534 | if (r <= 0) | |
535 | return r; | |
de190aef | 536 | |
2bc8ca0c ZJS |
537 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
538 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
539 | np = cp; | |
540 | last_moved = i; | |
de190aef | 541 | } |
2bc8ca0c | 542 | } |
cbdca852 | 543 | } |
de190aef | 544 | |
bc302926 | 545 | assert(np > 0); |
de190aef | 546 | |
cbdca852 LP |
547 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
548 | if (r < 0) | |
549 | return r; | |
de7b95cd | 550 | |
de190aef | 551 | if (ret) |
cbdca852 | 552 | *ret = n; |
de190aef | 553 | if (offset) |
cbdca852 | 554 | *offset = np; |
de190aef LP |
555 | |
556 | return 1; | |
557 | } | |
558 | ||
cbdca852 LP |
559 | static int find_location_for_match( |
560 | sd_journal *j, | |
561 | Match *m, | |
562 | JournalFile *f, | |
563 | direction_t direction, | |
564 | Object **ret, | |
565 | uint64_t *offset) { | |
566 | ||
de190aef | 567 | int r; |
de190aef LP |
568 | |
569 | assert(j); | |
cbdca852 | 570 | assert(m); |
de190aef | 571 | assert(f); |
de190aef | 572 | |
cbdca852 LP |
573 | if (m->type == MATCH_DISCRETE) { |
574 | uint64_t dp; | |
de190aef | 575 | |
cbdca852 | 576 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
577 | if (r <= 0) |
578 | return r; | |
579 | ||
cbdca852 | 580 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 581 | |
cbdca852 LP |
582 | if (j->current_location.type == LOCATION_HEAD) |
583 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
584 | if (j->current_location.type == LOCATION_TAIL) | |
585 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
586 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
587 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
588 | if (j->current_location.monotonic_set) { | |
589 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
590 | if (r != -ENOENT) | |
591 | return r; | |
592 | } | |
593 | if (j->current_location.realtime_set) | |
594 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 595 | |
cbdca852 | 596 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 597 | |
cbdca852 LP |
598 | } else if (m->type == MATCH_OR_TERM) { |
599 | uint64_t np = 0; | |
600 | Object *n; | |
601 | Match *i; | |
de7b95cd | 602 | |
cbdca852 | 603 | /* Find the earliest match */ |
de7b95cd | 604 | |
cbdca852 LP |
605 | LIST_FOREACH(matches, i, m->matches) { |
606 | uint64_t cp; | |
607 | ||
608 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
609 | if (r < 0) | |
610 | return r; | |
611 | else if (r > 0) { | |
612 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
613 | np = cp; | |
de190aef | 614 | } |
cbdca852 | 615 | } |
de190aef | 616 | |
cbdca852 LP |
617 | if (np == 0) |
618 | return 0; | |
de7b95cd | 619 | |
cbdca852 LP |
620 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
621 | if (r < 0) | |
622 | return r; | |
de7b95cd | 623 | |
cbdca852 LP |
624 | if (ret) |
625 | *ret = n; | |
626 | if (offset) | |
627 | *offset = np; | |
de190aef | 628 | |
cbdca852 | 629 | return 1; |
e892bd17 | 630 | |
cbdca852 LP |
631 | } else { |
632 | Match *i; | |
633 | uint64_t np = 0; | |
634 | ||
635 | assert(m->type == MATCH_AND_TERM); | |
636 | ||
637 | /* First jump to the last match, and then find the | |
638 | * next one where all matches match */ | |
639 | ||
640 | if (!m->matches) | |
641 | return 0; | |
642 | ||
643 | LIST_FOREACH(matches, i, m->matches) { | |
644 | uint64_t cp; | |
645 | ||
646 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
647 | if (r <= 0) | |
4b067dc9 LP |
648 | return r; |
649 | ||
bc302926 | 650 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 651 | np = cp; |
de7b95cd LP |
652 | } |
653 | ||
cbdca852 LP |
654 | return next_for_match(j, m, f, np, direction, ret, offset); |
655 | } | |
656 | } | |
de190aef | 657 | |
cbdca852 LP |
658 | static int find_location_with_matches( |
659 | sd_journal *j, | |
660 | JournalFile *f, | |
661 | direction_t direction, | |
662 | Object **ret, | |
663 | uint64_t *offset) { | |
664 | ||
665 | int r; | |
666 | ||
667 | assert(j); | |
668 | assert(f); | |
669 | assert(ret); | |
670 | assert(offset); | |
671 | ||
672 | if (!j->level0) { | |
673 | /* No matches is simple */ | |
674 | ||
675 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 676 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 677 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 678 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
679 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
680 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
681 | if (j->current_location.monotonic_set) { | |
682 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
683 | if (r != -ENOENT) | |
684 | return r; | |
de7b95cd | 685 | } |
cbdca852 LP |
686 | if (j->current_location.realtime_set) |
687 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 688 | |
f534928a | 689 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
690 | } else |
691 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
692 | } | |
de7b95cd | 693 | |
cbdca852 LP |
694 | static int next_with_matches( |
695 | sd_journal *j, | |
696 | JournalFile *f, | |
697 | direction_t direction, | |
698 | Object **ret, | |
699 | uint64_t *offset) { | |
700 | ||
cbdca852 LP |
701 | assert(j); |
702 | assert(f); | |
703 | assert(ret); | |
704 | assert(offset); | |
705 | ||
cbdca852 LP |
706 | /* No matches is easy. We simple advance the file |
707 | * pointer by one. */ | |
708 | if (!j->level0) | |
b29ddfcb | 709 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
710 | |
711 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 712 | * with an offset at least one step larger */ |
b29ddfcb MS |
713 | return next_for_match(j, j->level0, f, |
714 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
715 | : f->current_offset - 1, | |
716 | direction, ret, offset); | |
de7b95cd LP |
717 | } |
718 | ||
58439db4 | 719 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 720 | Object *c; |
6e693b42 | 721 | uint64_t cp, n_entries; |
cbdca852 | 722 | int r; |
de190aef LP |
723 | |
724 | assert(j); | |
725 | assert(f); | |
726 | ||
950c07d4 MS |
727 | n_entries = le64toh(f->header->n_entries); |
728 | ||
729 | /* If we hit EOF before, we don't need to look into this file again | |
730 | * unless direction changed or new entries appeared. */ | |
731 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
732 | n_entries == f->last_n_entries) | |
733 | return 0; | |
668c965a | 734 | |
950c07d4 MS |
735 | f->last_n_entries = n_entries; |
736 | ||
737 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
738 | /* LOCATION_SEEK here means we did the work in a previous |
739 | * iteration and the current location already points to a | |
740 | * candidate entry. */ | |
487d3720 MS |
741 | if (f->location_type != LOCATION_SEEK) { |
742 | r = next_with_matches(j, f, direction, &c, &cp); | |
743 | if (r <= 0) | |
744 | return r; | |
466ccd92 | 745 | |
950c07d4 | 746 | journal_file_save_location(f, c, cp); |
487d3720 | 747 | } |
de190aef | 748 | } else { |
950c07d4 MS |
749 | f->last_direction = direction; |
750 | ||
cbdca852 | 751 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
752 | if (r <= 0) |
753 | return r; | |
487d3720 | 754 | |
950c07d4 | 755 | journal_file_save_location(f, c, cp); |
de190aef LP |
756 | } |
757 | ||
bc302926 | 758 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
759 | * that is actually different from what we were previously |
760 | * looking at. This is necessary to handle entries which exist | |
761 | * in two (or more) journal files, and which shall all be | |
762 | * suppressed but one. */ | |
763 | ||
de190aef LP |
764 | for (;;) { |
765 | bool found; | |
766 | ||
767 | if (j->current_location.type == LOCATION_DISCRETE) { | |
768 | int k; | |
769 | ||
487d3720 | 770 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
771 | |
772 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
773 | } else |
774 | found = true; | |
775 | ||
487d3720 | 776 | if (found) |
de190aef | 777 | return 1; |
de190aef LP |
778 | |
779 | r = next_with_matches(j, f, direction, &c, &cp); | |
780 | if (r <= 0) | |
781 | return r; | |
487d3720 | 782 | |
950c07d4 | 783 | journal_file_save_location(f, c, cp); |
de190aef LP |
784 | } |
785 | } | |
786 | ||
e892bd17 | 787 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de | 788 | JournalFile *f, *new_file = NULL; |
cec736d2 | 789 | Iterator i; |
a002d44b | 790 | Object *o; |
87d2c1ff LP |
791 | int r; |
792 | ||
1ae464e0 TA |
793 | assert_return(j, -EINVAL); |
794 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 795 | |
c1f906bd | 796 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 797 | bool found; |
87d2c1ff | 798 | |
58439db4 | 799 | r = next_beyond_location(j, f, direction); |
e590af26 | 800 | if (r < 0) { |
da927ba9 | 801 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 802 | remove_file_real(j, f); |
e590af26 | 803 | continue; |
6573ef05 MS |
804 | } else if (r == 0) { |
805 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 806 | continue; |
6573ef05 | 807 | } |
87d2c1ff | 808 | |
468b21de | 809 | if (!new_file) |
de190aef LP |
810 | found = true; |
811 | else { | |
812 | int k; | |
813 | ||
d8ae66d7 | 814 | k = journal_file_compare_locations(f, new_file); |
de190aef | 815 | |
bc302926 | 816 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
817 | } |
818 | ||
e499c999 | 819 | if (found) |
468b21de | 820 | new_file = f; |
87d2c1ff LP |
821 | } |
822 | ||
468b21de | 823 | if (!new_file) |
de190aef | 824 | return 0; |
ae2cc8ef | 825 | |
e499c999 | 826 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
827 | if (r < 0) |
828 | return r; | |
829 | ||
1eb6332d | 830 | set_location(j, new_file, o); |
ae2cc8ef | 831 | |
de190aef LP |
832 | return 1; |
833 | } | |
ae2cc8ef | 834 | |
a5344d2c | 835 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
836 | return real_journal_next(j, DIRECTION_DOWN); |
837 | } | |
ae2cc8ef | 838 | |
a5344d2c | 839 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
840 | return real_journal_next(j, DIRECTION_UP); |
841 | } | |
ae2cc8ef | 842 | |
6f003b43 | 843 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 844 | int c = 0, r; |
ae2cc8ef | 845 | |
1ae464e0 TA |
846 | assert_return(j, -EINVAL); |
847 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 848 | |
6f003b43 LP |
849 | if (skip == 0) { |
850 | /* If this is not a discrete skip, then at least | |
851 | * resolve the current location */ | |
852 | if (j->current_location.type != LOCATION_DISCRETE) | |
853 | return real_journal_next(j, direction); | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | do { | |
859 | r = real_journal_next(j, direction); | |
de190aef LP |
860 | if (r < 0) |
861 | return r; | |
862 | ||
863 | if (r == 0) | |
864 | return c; | |
865 | ||
866 | skip--; | |
867 | c++; | |
6f003b43 | 868 | } while (skip > 0); |
87d2c1ff | 869 | |
de190aef | 870 | return c; |
87d2c1ff LP |
871 | } |
872 | ||
6f003b43 LP |
873 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
874 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
875 | } | |
de190aef | 876 | |
6f003b43 LP |
877 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
878 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
879 | } |
880 | ||
a5344d2c | 881 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 882 | Object *o; |
87d2c1ff | 883 | int r; |
3fbf9cbb | 884 | char bid[33], sid[33]; |
87d2c1ff | 885 | |
1ae464e0 TA |
886 | assert_return(j, -EINVAL); |
887 | assert_return(!journal_pid_changed(j), -ECHILD); | |
888 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 889 | |
3fbf9cbb LP |
890 | if (!j->current_file || j->current_file->current_offset <= 0) |
891 | return -EADDRNOTAVAIL; | |
87d2c1ff | 892 | |
de190aef | 893 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
894 | if (r < 0) |
895 | return r; | |
896 | ||
3fbf9cbb LP |
897 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
898 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 899 | |
3fbf9cbb | 900 | if (asprintf(cursor, |
507f22bd ZJS |
901 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
902 | sid, le64toh(o->entry.seqnum), | |
903 | bid, le64toh(o->entry.monotonic), | |
904 | le64toh(o->entry.realtime), | |
905 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 906 | return -ENOMEM; |
87d2c1ff | 907 | |
6f47ad30 | 908 | return 0; |
87d2c1ff LP |
909 | } |
910 | ||
a5344d2c | 911 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 912 | const char *word, *state; |
de190aef | 913 | size_t l; |
de190aef LP |
914 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
915 | bool | |
916 | seqnum_id_set = false, | |
917 | seqnum_set = false, | |
918 | boot_id_set = false, | |
919 | monotonic_set = false, | |
920 | realtime_set = false, | |
921 | xor_hash_set = false; | |
922 | sd_id128_t seqnum_id, boot_id; | |
923 | ||
1ae464e0 TA |
924 | assert_return(j, -EINVAL); |
925 | assert_return(!journal_pid_changed(j), -ECHILD); | |
926 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 927 | |
a2a5291b | 928 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
929 | char *item; |
930 | int k = 0; | |
931 | ||
a2a5291b | 932 | if (l < 2 || word[1] != '=') |
de190aef LP |
933 | return -EINVAL; |
934 | ||
a2a5291b | 935 | item = strndup(word, l); |
de190aef LP |
936 | if (!item) |
937 | return -ENOMEM; | |
938 | ||
a2a5291b | 939 | switch (word[0]) { |
de190aef LP |
940 | |
941 | case 's': | |
942 | seqnum_id_set = true; | |
be3ea5ea | 943 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
944 | break; |
945 | ||
946 | case 'i': | |
947 | seqnum_set = true; | |
be3ea5ea | 948 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
949 | k = -EINVAL; |
950 | break; | |
951 | ||
952 | case 'b': | |
953 | boot_id_set = true; | |
be3ea5ea | 954 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
955 | break; |
956 | ||
957 | case 'm': | |
958 | monotonic_set = true; | |
be3ea5ea | 959 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
960 | k = -EINVAL; |
961 | break; | |
962 | ||
963 | case 't': | |
964 | realtime_set = true; | |
be3ea5ea | 965 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
966 | k = -EINVAL; |
967 | break; | |
968 | ||
969 | case 'x': | |
970 | xor_hash_set = true; | |
be3ea5ea | 971 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
972 | k = -EINVAL; |
973 | break; | |
974 | } | |
975 | ||
976 | free(item); | |
977 | ||
978 | if (k < 0) | |
979 | return k; | |
980 | } | |
981 | ||
982 | if ((!seqnum_set || !seqnum_id_set) && | |
983 | (!monotonic_set || !boot_id_set) && | |
984 | !realtime_set) | |
985 | return -EINVAL; | |
986 | ||
987 | reset_location(j); | |
988 | ||
a87247dd | 989 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
990 | |
991 | if (realtime_set) { | |
992 | j->current_location.realtime = (uint64_t) realtime; | |
993 | j->current_location.realtime_set = true; | |
994 | } | |
995 | ||
996 | if (seqnum_set && seqnum_id_set) { | |
997 | j->current_location.seqnum = (uint64_t) seqnum; | |
998 | j->current_location.seqnum_id = seqnum_id; | |
999 | j->current_location.seqnum_set = true; | |
1000 | } | |
1001 | ||
1002 | if (monotonic_set && boot_id_set) { | |
1003 | j->current_location.monotonic = (uint64_t) monotonic; | |
1004 | j->current_location.boot_id = boot_id; | |
1005 | j->current_location.monotonic_set = true; | |
1006 | } | |
1007 | ||
1008 | if (xor_hash_set) { | |
1009 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1010 | j->current_location.xor_hash_set = true; | |
1011 | } | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
c6511e85 LP |
1016 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1017 | int r; | |
a2a5291b | 1018 | const char *word, *state; |
c6511e85 LP |
1019 | size_t l; |
1020 | Object *o; | |
1021 | ||
1ae464e0 TA |
1022 | assert_return(j, -EINVAL); |
1023 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1024 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1025 | |
1026 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1027 | return -EADDRNOTAVAIL; | |
1028 | ||
1029 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1030 | if (r < 0) | |
1031 | return r; | |
1032 | ||
a2a5291b | 1033 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
c6511e85 LP |
1034 | _cleanup_free_ char *item = NULL; |
1035 | sd_id128_t id; | |
1036 | unsigned long long ll; | |
1037 | int k = 0; | |
1038 | ||
a2a5291b | 1039 | if (l < 2 || word[1] != '=') |
c6511e85 LP |
1040 | return -EINVAL; |
1041 | ||
a2a5291b | 1042 | item = strndup(word, l); |
c6511e85 LP |
1043 | if (!item) |
1044 | return -ENOMEM; | |
1045 | ||
a2a5291b | 1046 | switch (word[0]) { |
c6511e85 LP |
1047 | |
1048 | case 's': | |
1049 | k = sd_id128_from_string(item+2, &id); | |
1050 | if (k < 0) | |
1051 | return k; | |
1052 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1053 | return 0; | |
1054 | break; | |
1055 | ||
1056 | case 'i': | |
1057 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1058 | return -EINVAL; | |
1059 | if (ll != le64toh(o->entry.seqnum)) | |
1060 | return 0; | |
1061 | break; | |
1062 | ||
1063 | case 'b': | |
1064 | k = sd_id128_from_string(item+2, &id); | |
1065 | if (k < 0) | |
1066 | return k; | |
1067 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1068 | return 0; | |
1069 | break; | |
1070 | ||
1071 | case 'm': | |
1072 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1073 | return -EINVAL; | |
1074 | if (ll != le64toh(o->entry.monotonic)) | |
1075 | return 0; | |
1076 | break; | |
1077 | ||
1078 | case 't': | |
1079 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1080 | return -EINVAL; | |
1081 | if (ll != le64toh(o->entry.realtime)) | |
1082 | return 0; | |
1083 | break; | |
1084 | ||
1085 | case 'x': | |
1086 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1087 | return -EINVAL; | |
1088 | if (ll != le64toh(o->entry.xor_hash)) | |
1089 | return 0; | |
1090 | break; | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | return 1; | |
1095 | } | |
1096 | ||
1097 | ||
a5344d2c | 1098 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1099 | assert_return(j, -EINVAL); |
1100 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1101 | |
1102 | reset_location(j); | |
a87247dd | 1103 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1104 | j->current_location.boot_id = boot_id; |
1105 | j->current_location.monotonic = usec; | |
1106 | j->current_location.monotonic_set = true; | |
1107 | ||
1108 | return 0; | |
1109 | } | |
1110 | ||
a5344d2c | 1111 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1112 | assert_return(j, -EINVAL); |
1113 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1114 | |
1115 | reset_location(j); | |
a87247dd | 1116 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1117 | j->current_location.realtime = usec; |
1118 | j->current_location.realtime_set = true; | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
a5344d2c | 1123 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1124 | assert_return(j, -EINVAL); |
1125 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1126 | |
1127 | reset_location(j); | |
1128 | j->current_location.type = LOCATION_HEAD; | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
a5344d2c | 1133 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1134 | assert_return(j, -EINVAL); |
1135 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1136 | |
1137 | reset_location(j); | |
1138 | j->current_location.type = LOCATION_TAIL; | |
1139 | ||
1140 | return 0; | |
87d2c1ff LP |
1141 | } |
1142 | ||
85210bff LP |
1143 | static void check_network(sd_journal *j, int fd) { |
1144 | struct statfs sfs; | |
1145 | ||
1146 | assert(j); | |
1147 | ||
1148 | if (j->on_network) | |
1149 | return; | |
1150 | ||
1151 | if (fstatfs(fd, &sfs) < 0) | |
1152 | return; | |
1153 | ||
1154 | j->on_network = | |
c51cf056 ZJS |
1155 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1156 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1157 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1158 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1159 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1160 | } |
1161 | ||
a688baa8 ZJS |
1162 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1163 | const char *full, *tilded, *atted; | |
1164 | ||
63c372cb LP |
1165 | full = strjoina(prefix, ".journal"); |
1166 | tilded = strjoina(full, "~"); | |
1167 | atted = strjoina(prefix, "@"); | |
a688baa8 ZJS |
1168 | |
1169 | return streq(filename, full) || | |
1170 | streq(filename, tilded) || | |
1171 | startswith(filename, atted); | |
1172 | } | |
1173 | ||
1174 | static bool file_type_wanted(int flags, const char *filename) { | |
1175 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1176 | return false; | |
1177 | ||
1178 | /* no flags set → every type is OK */ | |
1179 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1180 | return true; | |
1181 | ||
1182 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1183 | return true; | |
1184 | ||
1185 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1186 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1187 | ||
5ffa8c81 | 1188 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1189 | |
1190 | if (file_has_type_prefix(prefix, filename)) | |
1191 | return true; | |
1192 | } | |
1193 | ||
1194 | return false; | |
1195 | } | |
1196 | ||
5302ebe1 | 1197 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1198 | JournalFile *f = NULL; |
5302ebe1 | 1199 | int r; |
3fbf9cbb LP |
1200 | |
1201 | assert(j); | |
5302ebe1 | 1202 | assert(path); |
3fbf9cbb | 1203 | |
c1f906bd | 1204 | if (ordered_hashmap_get(j->files, path)) |
50f20cfd | 1205 | return 0; |
50f20cfd | 1206 | |
9e8abdf0 LP |
1207 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
1208 | log_warning("Too many open journal files, not adding %s.", path); | |
1209 | return set_put_error(j, -ETOOMANYREFS); | |
1210 | } | |
1211 | ||
16e9f408 | 1212 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1213 | if (r < 0) |
3fbf9cbb | 1214 | return r; |
3fbf9cbb | 1215 | |
72f59706 | 1216 | /* journal_file_dump(f); */ |
de190aef | 1217 | |
c1f906bd | 1218 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb LP |
1219 | if (r < 0) { |
1220 | journal_file_close(f); | |
1221 | return r; | |
1222 | } | |
1223 | ||
5ec76417 | 1224 | log_debug("File %s added.", f->path); |
a50d7d43 | 1225 | |
85210bff LP |
1226 | check_network(j, f->fd); |
1227 | ||
a963990f LP |
1228 | j->current_invalidate_counter ++; |
1229 | ||
50f20cfd LP |
1230 | return 0; |
1231 | } | |
1232 | ||
5302ebe1 ZJS |
1233 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1234 | _cleanup_free_ char *path = NULL; | |
1235 | int r; | |
1236 | ||
1237 | assert(j); | |
1238 | assert(prefix); | |
1239 | assert(filename); | |
1240 | ||
1241 | if (j->no_new_files || | |
1242 | !file_type_wanted(j->flags, filename)) | |
1243 | return 0; | |
1244 | ||
1245 | path = strjoin(prefix, "/", filename, NULL); | |
1246 | if (!path) | |
1247 | return -ENOMEM; | |
1248 | ||
1249 | r = add_any_file(j, path); | |
1250 | if (r == -ENOENT) | |
1251 | return 0; | |
7b300be7 | 1252 | return r; |
5302ebe1 ZJS |
1253 | } |
1254 | ||
a963990f | 1255 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
a9a245c1 | 1256 | _cleanup_free_ char *path; |
50f20cfd LP |
1257 | JournalFile *f; |
1258 | ||
1259 | assert(j); | |
1260 | assert(prefix); | |
1261 | assert(filename); | |
1262 | ||
b7def684 | 1263 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1264 | if (!path) |
50f20cfd LP |
1265 | return -ENOMEM; |
1266 | ||
c1f906bd | 1267 | f = ordered_hashmap_get(j->files, path); |
50f20cfd LP |
1268 | if (!f) |
1269 | return 0; | |
1270 | ||
a9a245c1 ZJS |
1271 | remove_file_real(j, f); |
1272 | return 0; | |
1273 | } | |
1274 | ||
1275 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1276 | assert(j); | |
1277 | assert(f); | |
1278 | ||
c1f906bd | 1279 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1280 | |
5ec76417 | 1281 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1282 | |
3c1668da LP |
1283 | if (j->current_file == f) { |
1284 | j->current_file = NULL; | |
1285 | j->current_field = 0; | |
1286 | } | |
1287 | ||
1288 | if (j->unique_file == f) { | |
360af4cf | 1289 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1290 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1291 | j->unique_offset = 0; |
360af4cf ZJS |
1292 | if (!j->unique_file) |
1293 | j->unique_file_lost = true; | |
3c1668da LP |
1294 | } |
1295 | ||
50f20cfd LP |
1296 | journal_file_close(f); |
1297 | ||
a963990f | 1298 | j->current_invalidate_counter ++; |
3fbf9cbb LP |
1299 | } |
1300 | ||
a963990f | 1301 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1302 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1303 | int r; |
7fd1b19b | 1304 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1305 | sd_id128_t id, mid; |
a963990f | 1306 | Directory *m; |
3fbf9cbb LP |
1307 | |
1308 | assert(j); | |
1309 | assert(prefix); | |
a963990f | 1310 | assert(dirname); |
3fbf9cbb | 1311 | |
d95b1fb3 ZJS |
1312 | log_debug("Considering %s/%s.", prefix, dirname); |
1313 | ||
cf244689 | 1314 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1315 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1316 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1317 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1318 | return 0; |
1319 | ||
b7def684 | 1320 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1321 | if (!path) |
3fbf9cbb LP |
1322 | return -ENOMEM; |
1323 | ||
a963990f | 1324 | d = opendir(path); |
3fbf9cbb | 1325 | if (!d) { |
56f64d95 | 1326 | log_debug_errno(errno, "Failed to open %s: %m", path); |
3fbf9cbb LP |
1327 | if (errno == ENOENT) |
1328 | return 0; | |
3fbf9cbb LP |
1329 | return -errno; |
1330 | } | |
1331 | ||
a963990f LP |
1332 | m = hashmap_get(j->directories_by_path, path); |
1333 | if (!m) { | |
1334 | m = new0(Directory, 1); | |
a50d7d43 | 1335 | if (!m) |
a963990f | 1336 | return -ENOMEM; |
a963990f LP |
1337 | |
1338 | m->is_root = false; | |
1339 | m->path = path; | |
1340 | ||
1341 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1342 | free(m); |
1343 | return -ENOMEM; | |
1344 | } | |
1345 | ||
a50d7d43 | 1346 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1347 | j->current_invalidate_counter ++; |
1348 | ||
5ec76417 | 1349 | log_debug("Directory %s added.", m->path); |
a963990f | 1350 | |
a50d7d43 | 1351 | } else if (m->is_root) |
a963990f | 1352 | return 0; |
a963990f LP |
1353 | |
1354 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1355 | ||
1356 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1357 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1358 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1359 | IN_ONLYDIR); |
a963990f LP |
1360 | |
1361 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1362 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1363 | } | |
1364 | ||
1365 | for (;;) { | |
7d5e9c0f | 1366 | struct dirent *de; |
a963990f | 1367 | |
bde1fdd7 FW |
1368 | errno = 0; |
1369 | de = readdir(d); | |
1370 | if (!de && errno != 0) { | |
1371 | r = -errno; | |
56f64d95 | 1372 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1373 | return r; |
1374 | } | |
1375 | if (!de) | |
a963990f LP |
1376 | break; |
1377 | ||
de2c3907 LP |
1378 | if (dirent_is_file_with_suffix(de, ".journal") || |
1379 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1380 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1381 | if (r < 0) { |
c33b3297 MS |
1382 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1383 | m->path, de->d_name); | |
3ac251b8 | 1384 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1385 | if (r < 0) |
1386 | return r; | |
1387 | } | |
a963990f LP |
1388 | } |
1389 | } | |
1390 | ||
85210bff LP |
1391 | check_network(j, dirfd(d)); |
1392 | ||
a963990f LP |
1393 | return 0; |
1394 | } | |
1395 | ||
89739579 | 1396 | static int add_root_directory(sd_journal *j, const char *p) { |
7fd1b19b | 1397 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1398 | Directory *m; |
1399 | int r; | |
1400 | ||
1401 | assert(j); | |
1402 | assert(p); | |
1403 | ||
1404 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1405 | !path_startswith(p, "/run")) | |
1406 | return -EINVAL; | |
1407 | ||
89739579 | 1408 | if (j->prefix) |
63c372cb | 1409 | p = strjoina(j->prefix, p); |
b6741478 | 1410 | |
a963990f LP |
1411 | d = opendir(p); |
1412 | if (!d) | |
1413 | return -errno; | |
1414 | ||
1415 | m = hashmap_get(j->directories_by_path, p); | |
1416 | if (!m) { | |
1417 | m = new0(Directory, 1); | |
a50d7d43 | 1418 | if (!m) |
a963990f | 1419 | return -ENOMEM; |
a963990f LP |
1420 | |
1421 | m->is_root = true; | |
1422 | m->path = strdup(p); | |
1423 | if (!m->path) { | |
a963990f LP |
1424 | free(m); |
1425 | return -ENOMEM; | |
1426 | } | |
1427 | ||
1428 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1429 | free(m->path); |
1430 | free(m); | |
1431 | return -ENOMEM; | |
1432 | } | |
1433 | ||
1434 | j->current_invalidate_counter ++; | |
1435 | ||
5ec76417 | 1436 | log_debug("Root directory %s added.", m->path); |
a963990f | 1437 | |
a50d7d43 | 1438 | } else if (!m->is_root) |
a963990f | 1439 | return 0; |
50f20cfd | 1440 | |
a963990f LP |
1441 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1442 | ||
1443 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1444 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1445 | IN_ONLYDIR); |
a963990f LP |
1446 | |
1447 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1448 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1449 | } | |
50f20cfd | 1450 | |
5302ebe1 ZJS |
1451 | if (j->no_new_files) |
1452 | return 0; | |
1453 | ||
3fbf9cbb | 1454 | for (;;) { |
7d5e9c0f | 1455 | struct dirent *de; |
a963990f | 1456 | sd_id128_t id; |
3fbf9cbb | 1457 | |
bde1fdd7 FW |
1458 | errno = 0; |
1459 | de = readdir(d); | |
1460 | if (!de && errno != 0) { | |
1461 | r = -errno; | |
56f64d95 | 1462 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1463 | return r; |
1464 | } | |
1465 | if (!de) | |
3fbf9cbb LP |
1466 | break; |
1467 | ||
de2c3907 LP |
1468 | if (dirent_is_file_with_suffix(de, ".journal") || |
1469 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1470 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1471 | if (r < 0) { |
c33b3297 MS |
1472 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1473 | m->path, de->d_name); | |
3ac251b8 | 1474 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1475 | if (r < 0) |
1476 | return r; | |
1477 | } | |
6f5878a2 | 1478 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1479 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1480 | ||
1481 | r = add_directory(j, m->path, de->d_name); | |
1482 | if (r < 0) | |
da927ba9 | 1483 | log_debug_errno(r, "Failed to add directory %s/%s: %m", m->path, de->d_name); |
a963990f | 1484 | } |
3fbf9cbb LP |
1485 | } |
1486 | ||
85210bff LP |
1487 | check_network(j, dirfd(d)); |
1488 | ||
a963990f LP |
1489 | return 0; |
1490 | } | |
1491 | ||
1492 | static int remove_directory(sd_journal *j, Directory *d) { | |
1493 | assert(j); | |
1494 | ||
1495 | if (d->wd > 0) { | |
1496 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1497 | ||
1498 | if (j->inotify_fd >= 0) | |
1499 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1500 | } | |
1501 | ||
1502 | hashmap_remove(j->directories_by_path, d->path); | |
1503 | ||
1504 | if (d->is_root) | |
5ec76417 | 1505 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1506 | else |
5ec76417 | 1507 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1508 | |
1509 | free(d->path); | |
1510 | free(d); | |
50f20cfd | 1511 | |
3fbf9cbb LP |
1512 | return 0; |
1513 | } | |
1514 | ||
89739579 | 1515 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1516 | int r; |
a963990f LP |
1517 | const char search_paths[] = |
1518 | "/run/log/journal\0" | |
1519 | "/var/log/journal\0"; | |
1520 | const char *p; | |
50f20cfd LP |
1521 | |
1522 | assert(j); | |
50f20cfd | 1523 | |
a963990f LP |
1524 | /* We ignore most errors here, since the idea is to only open |
1525 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1526 | |
6fe391c5 | 1527 | NULSTR_FOREACH(p, search_paths) { |
89739579 | 1528 | r = add_root_directory(j, p); |
3ac251b8 LP |
1529 | if (r < 0 && r != -ENOENT) { |
1530 | r = set_put_error(j, r); | |
1531 | if (r < 0) | |
1532 | return r; | |
1533 | } | |
6fe391c5 | 1534 | } |
50f20cfd | 1535 | |
a963990f | 1536 | return 0; |
50f20cfd LP |
1537 | } |
1538 | ||
5302ebe1 ZJS |
1539 | static int add_current_paths(sd_journal *j) { |
1540 | Iterator i; | |
1541 | JournalFile *f; | |
1542 | ||
1543 | assert(j); | |
1544 | assert(j->no_new_files); | |
1545 | ||
1546 | /* Simply adds all directories for files we have open as | |
1547 | * "root" directories. We don't expect errors here, so we | |
1548 | * treat them as fatal. */ | |
1549 | ||
c1f906bd | 1550 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1551 | _cleanup_free_ char *dir; |
e9174f29 | 1552 | int r; |
5302ebe1 ZJS |
1553 | |
1554 | dir = dirname_malloc(f->path); | |
1555 | if (!dir) | |
1556 | return -ENOMEM; | |
1557 | ||
89739579 | 1558 | r = add_root_directory(j, dir); |
5302ebe1 ZJS |
1559 | if (r < 0) { |
1560 | set_put_error(j, r); | |
1561 | return r; | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | ||
a963990f | 1569 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1570 | assert(j); |
50f20cfd | 1571 | |
a963990f LP |
1572 | if (j->inotify_fd < 0) { |
1573 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1574 | if (j->inotify_fd < 0) | |
1575 | return -errno; | |
1576 | } | |
50f20cfd | 1577 | |
a963990f | 1578 | if (!j->directories_by_wd) { |
d5099efc | 1579 | j->directories_by_wd = hashmap_new(NULL); |
a963990f LP |
1580 | if (!j->directories_by_wd) |
1581 | return -ENOMEM; | |
50f20cfd | 1582 | } |
a963990f LP |
1583 | |
1584 | return 0; | |
50f20cfd LP |
1585 | } |
1586 | ||
7827b1a1 | 1587 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1588 | sd_journal *j; |
50f20cfd | 1589 | |
a963990f LP |
1590 | j = new0(sd_journal, 1); |
1591 | if (!j) | |
1592 | return NULL; | |
50f20cfd | 1593 | |
a65f06bb | 1594 | j->original_pid = getpid(); |
a963990f LP |
1595 | j->inotify_fd = -1; |
1596 | j->flags = flags; | |
93b73b06 | 1597 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1598 | |
7827b1a1 LP |
1599 | if (path) { |
1600 | j->path = strdup(path); | |
6180fc61 ZJS |
1601 | if (!j->path) |
1602 | goto fail; | |
7827b1a1 LP |
1603 | } |
1604 | ||
c1f906bd | 1605 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1606 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1607 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1608 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1609 | goto fail; |
16e9f408 | 1610 | |
a963990f | 1611 | return j; |
6180fc61 ZJS |
1612 | |
1613 | fail: | |
1614 | sd_journal_close(j); | |
1615 | return NULL; | |
50f20cfd LP |
1616 | } |
1617 | ||
a5344d2c | 1618 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1619 | sd_journal *j; |
3fbf9cbb | 1620 | int r; |
87d2c1ff | 1621 | |
1ae464e0 | 1622 | assert_return(ret, -EINVAL); |
b6741478 | 1623 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1624 | |
7827b1a1 | 1625 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1626 | if (!j) |
1627 | return -ENOMEM; | |
1628 | ||
89739579 | 1629 | r = add_search_paths(j); |
a963990f | 1630 | if (r < 0) |
50f20cfd | 1631 | goto fail; |
50f20cfd | 1632 | |
a963990f LP |
1633 | *ret = j; |
1634 | return 0; | |
cf244689 | 1635 | |
a963990f LP |
1636 | fail: |
1637 | sd_journal_close(j); | |
87d2c1ff | 1638 | |
a963990f LP |
1639 | return r; |
1640 | } | |
50f20cfd | 1641 | |
b6741478 LP |
1642 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1643 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1644 | sd_journal *j; | |
1645 | char *p; | |
1646 | int r; | |
1647 | ||
1648 | assert_return(machine, -EINVAL); | |
1649 | assert_return(ret, -EINVAL); | |
1650 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1651 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1652 | |
63c372cb | 1653 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1654 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1655 | if (r == -ENOENT) | |
1656 | return -EHOSTDOWN; | |
1657 | if (r < 0) | |
1658 | return r; | |
1659 | if (!root) | |
1660 | return -ENODATA; | |
1661 | ||
1662 | if (!streq_ptr(class, "container")) | |
1663 | return -EIO; | |
1664 | ||
1665 | j = journal_new(flags, NULL); | |
1666 | if (!j) | |
1667 | return -ENOMEM; | |
1668 | ||
89739579 LP |
1669 | j->prefix = root; |
1670 | root = NULL; | |
1671 | ||
1672 | r = add_search_paths(j); | |
b6741478 LP |
1673 | if (r < 0) |
1674 | goto fail; | |
1675 | ||
1676 | *ret = j; | |
1677 | return 0; | |
1678 | ||
1679 | fail: | |
1680 | sd_journal_close(j); | |
1681 | return r; | |
1682 | } | |
1683 | ||
a963990f LP |
1684 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1685 | sd_journal *j; | |
1686 | int r; | |
87d2c1ff | 1687 | |
1ae464e0 TA |
1688 | assert_return(ret, -EINVAL); |
1689 | assert_return(path, -EINVAL); | |
1690 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1691 | |
7827b1a1 | 1692 | j = journal_new(flags, path); |
a963990f LP |
1693 | if (!j) |
1694 | return -ENOMEM; | |
3fbf9cbb | 1695 | |
89739579 | 1696 | r = add_root_directory(j, path); |
6fe391c5 | 1697 | if (r < 0) { |
3ac251b8 | 1698 | set_put_error(j, r); |
a963990f | 1699 | goto fail; |
6fe391c5 | 1700 | } |
87d2c1ff LP |
1701 | |
1702 | *ret = j; | |
1703 | return 0; | |
1704 | ||
1705 | fail: | |
1706 | sd_journal_close(j); | |
1707 | ||
1708 | return r; | |
a963990f | 1709 | } |
87d2c1ff | 1710 | |
5302ebe1 ZJS |
1711 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1712 | sd_journal *j; | |
1713 | const char **path; | |
1714 | int r; | |
1715 | ||
1ae464e0 TA |
1716 | assert_return(ret, -EINVAL); |
1717 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1718 | |
1719 | j = journal_new(flags, NULL); | |
1720 | if (!j) | |
1721 | return -ENOMEM; | |
1722 | ||
1723 | STRV_FOREACH(path, paths) { | |
1724 | r = add_any_file(j, *path); | |
1725 | if (r < 0) { | |
da927ba9 | 1726 | log_error_errno(r, "Failed to open %s: %m", *path); |
5302ebe1 ZJS |
1727 | goto fail; |
1728 | } | |
1729 | } | |
1730 | ||
1731 | j->no_new_files = true; | |
1732 | ||
1733 | *ret = j; | |
1734 | return 0; | |
1735 | ||
1736 | fail: | |
1737 | sd_journal_close(j); | |
1738 | ||
1739 | return r; | |
1740 | } | |
1741 | ||
a5344d2c | 1742 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1743 | Directory *d; |
1744 | JournalFile *f; | |
1745 | ||
a5344d2c LP |
1746 | if (!j) |
1747 | return; | |
87d2c1ff | 1748 | |
54b1da83 LP |
1749 | sd_journal_flush_matches(j); |
1750 | ||
c1f906bd | 1751 | while ((f = ordered_hashmap_steal_first(j->files))) |
a963990f | 1752 | journal_file_close(f); |
50f20cfd | 1753 | |
c1f906bd | 1754 | ordered_hashmap_free(j->files); |
260a2be4 | 1755 | |
a963990f LP |
1756 | while ((d = hashmap_first(j->directories_by_path))) |
1757 | remove_directory(j, d); | |
260a2be4 | 1758 | |
a963990f LP |
1759 | while ((d = hashmap_first(j->directories_by_wd))) |
1760 | remove_directory(j, d); | |
87d2c1ff | 1761 | |
a963990f LP |
1762 | hashmap_free(j->directories_by_path); |
1763 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1764 | |
03e334a1 | 1765 | safe_close(j->inotify_fd); |
50f20cfd | 1766 | |
bf807d4d LP |
1767 | if (j->mmap) { |
1768 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1769 | mmap_cache_unref(j->mmap); |
bf807d4d | 1770 | } |
16e9f408 | 1771 | |
7827b1a1 | 1772 | free(j->path); |
89739579 | 1773 | free(j->prefix); |
3c1668da | 1774 | free(j->unique_field); |
6fe391c5 | 1775 | set_free(j->errors); |
87d2c1ff LP |
1776 | free(j); |
1777 | } | |
3fbf9cbb | 1778 | |
a5344d2c | 1779 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1780 | Object *o; |
1781 | JournalFile *f; | |
1782 | int r; | |
1783 | ||
1ae464e0 TA |
1784 | assert_return(j, -EINVAL); |
1785 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1786 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1787 | |
1788 | f = j->current_file; | |
1789 | if (!f) | |
de190aef | 1790 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1791 | |
1792 | if (f->current_offset <= 0) | |
de190aef | 1793 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1794 | |
de190aef | 1795 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1796 | if (r < 0) |
1797 | return r; | |
1798 | ||
1799 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1800 | return 0; |
3fbf9cbb LP |
1801 | } |
1802 | ||
a5344d2c | 1803 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1804 | Object *o; |
1805 | JournalFile *f; | |
1806 | int r; | |
1807 | sd_id128_t id; | |
1808 | ||
1ae464e0 TA |
1809 | assert_return(j, -EINVAL); |
1810 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1811 | |
1812 | f = j->current_file; | |
1813 | if (!f) | |
de190aef | 1814 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1815 | |
1816 | if (f->current_offset <= 0) | |
de190aef | 1817 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1818 | |
de190aef | 1819 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1820 | if (r < 0) |
1821 | return r; | |
1822 | ||
de190aef LP |
1823 | if (ret_boot_id) |
1824 | *ret_boot_id = o->entry.boot_id; | |
1825 | else { | |
1826 | r = sd_id128_get_boot(&id); | |
1827 | if (r < 0) | |
1828 | return r; | |
3fbf9cbb | 1829 | |
de190aef | 1830 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1831 | return -ESTALE; |
de190aef | 1832 | } |
3fbf9cbb | 1833 | |
14a65d65 LP |
1834 | if (ret) |
1835 | *ret = le64toh(o->entry.monotonic); | |
1836 | ||
de190aef | 1837 | return 0; |
3fbf9cbb LP |
1838 | } |
1839 | ||
362a3f81 LP |
1840 | static bool field_is_valid(const char *field) { |
1841 | const char *p; | |
1842 | ||
1843 | assert(field); | |
1844 | ||
1845 | if (isempty(field)) | |
1846 | return false; | |
1847 | ||
1848 | if (startswith(field, "__")) | |
1849 | return false; | |
1850 | ||
1851 | for (p = field; *p; p++) { | |
1852 | ||
1853 | if (*p == '_') | |
1854 | continue; | |
1855 | ||
1856 | if (*p >= 'A' && *p <= 'Z') | |
1857 | continue; | |
1858 | ||
1859 | if (*p >= '0' && *p <= '9') | |
1860 | continue; | |
1861 | ||
1862 | return false; | |
1863 | } | |
1864 | ||
1865 | return true; | |
1866 | } | |
1867 | ||
a5344d2c | 1868 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1869 | JournalFile *f; |
1870 | uint64_t i, n; | |
1871 | size_t field_length; | |
1872 | int r; | |
1873 | Object *o; | |
1874 | ||
1ae464e0 TA |
1875 | assert_return(j, -EINVAL); |
1876 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1877 | assert_return(field, -EINVAL); | |
1878 | assert_return(data, -EINVAL); | |
1879 | assert_return(size, -EINVAL); | |
1880 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
1881 | |
1882 | f = j->current_file; | |
1883 | if (!f) | |
de190aef | 1884 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1885 | |
1886 | if (f->current_offset <= 0) | |
de190aef | 1887 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1888 | |
de190aef | 1889 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1890 | if (r < 0) |
1891 | return r; | |
1892 | ||
1893 | field_length = strlen(field); | |
1894 | ||
1895 | n = journal_file_entry_n_items(o); | |
1896 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1897 | uint64_t p, l; |
1898 | le64_t le_hash; | |
3fbf9cbb | 1899 | size_t t; |
1ec7120e | 1900 | int compression; |
3fbf9cbb LP |
1901 | |
1902 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1903 | le_hash = o->entry.items[i].hash; |
de190aef | 1904 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1905 | if (r < 0) |
1906 | return r; | |
1907 | ||
de190aef | 1908 | if (le_hash != o->data.hash) |
de7b95cd LP |
1909 | return -EBADMSG; |
1910 | ||
3fbf9cbb LP |
1911 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1912 | ||
1ec7120e | 1913 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
1914 | if (compression) { |
1915 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
1916 | if (decompress_startswith(compression, | |
1917 | o->data.payload, l, | |
1918 | &f->compress_buffer, &f->compress_buffer_size, | |
1919 | field, field_length, '=')) { | |
1920 | ||
fa1c4b51 | 1921 | size_t rsize; |
3b1a55e1 ZJS |
1922 | |
1923 | r = decompress_blob(compression, | |
1924 | o->data.payload, l, | |
1925 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
1926 | j->data_threshold); | |
1927 | if (r < 0) | |
1928 | return r; | |
807e17f0 | 1929 | |
3b1a55e1 ZJS |
1930 | *data = f->compress_buffer; |
1931 | *size = (size_t) rsize; | |
807e17f0 | 1932 | |
3b1a55e1 ZJS |
1933 | return 0; |
1934 | } | |
1935 | #else | |
1936 | return -EPROTONOSUPPORT; | |
1937 | #endif | |
807e17f0 LP |
1938 | } else if (l >= field_length+1 && |
1939 | memcmp(o->data.payload, field, field_length) == 0 && | |
1940 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1941 | |
161e54f8 | 1942 | t = (size_t) l; |
3fbf9cbb | 1943 | |
161e54f8 LP |
1944 | if ((uint64_t) t != l) |
1945 | return -E2BIG; | |
3fbf9cbb | 1946 | |
161e54f8 LP |
1947 | *data = o->data.payload; |
1948 | *size = t; | |
3fbf9cbb | 1949 | |
99613ec5 | 1950 | return 0; |
161e54f8 | 1951 | } |
3fbf9cbb | 1952 | |
de190aef | 1953 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1954 | if (r < 0) |
1955 | return r; | |
3fbf9cbb LP |
1956 | } |
1957 | ||
de190aef | 1958 | return -ENOENT; |
3fbf9cbb LP |
1959 | } |
1960 | ||
93b73b06 | 1961 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
1962 | size_t t; |
1963 | uint64_t l; | |
3b1a55e1 | 1964 | int compression; |
3c1668da LP |
1965 | |
1966 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
1967 | t = (size_t) l; | |
1968 | ||
1969 | /* We can't read objects larger than 4G on a 32bit machine */ | |
1970 | if ((uint64_t) t != l) | |
1971 | return -E2BIG; | |
1972 | ||
1ec7120e ZJS |
1973 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
1974 | if (compression) { | |
3b1a55e1 | 1975 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 1976 | size_t rsize; |
3b1a55e1 | 1977 | int r; |
3c1668da | 1978 | |
1ec7120e ZJS |
1979 | r = decompress_blob(compression, |
1980 | o->data.payload, l, &f->compress_buffer, | |
1981 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
1982 | if (r < 0) | |
1983 | return r; | |
3c1668da LP |
1984 | |
1985 | *data = f->compress_buffer; | |
1986 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
1987 | #else |
1988 | return -EPROTONOSUPPORT; | |
1989 | #endif | |
3c1668da LP |
1990 | } else { |
1991 | *data = o->data.payload; | |
1992 | *size = t; | |
1993 | } | |
1994 | ||
1995 | return 0; | |
1996 | } | |
1997 | ||
a5344d2c | 1998 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 1999 | JournalFile *f; |
3c1668da | 2000 | uint64_t p, n; |
4fd052ae | 2001 | le64_t le_hash; |
3fbf9cbb LP |
2002 | int r; |
2003 | Object *o; | |
2004 | ||
1ae464e0 TA |
2005 | assert_return(j, -EINVAL); |
2006 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2007 | assert_return(data, -EINVAL); | |
2008 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2009 | |
2010 | f = j->current_file; | |
2011 | if (!f) | |
de190aef | 2012 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2013 | |
2014 | if (f->current_offset <= 0) | |
de190aef | 2015 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2016 | |
de190aef | 2017 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2018 | if (r < 0) |
2019 | return r; | |
2020 | ||
2021 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2022 | if (j->current_field >= n) |
3fbf9cbb LP |
2023 | return 0; |
2024 | ||
7210bfb3 | 2025 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2026 | le_hash = o->entry.items[j->current_field].hash; |
2027 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2028 | if (r < 0) |
2029 | return r; | |
2030 | ||
de190aef | 2031 | if (le_hash != o->data.hash) |
de7b95cd LP |
2032 | return -EBADMSG; |
2033 | ||
93b73b06 | 2034 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2035 | if (r < 0) |
2036 | return r; | |
3fbf9cbb | 2037 | |
7210bfb3 | 2038 | j->current_field ++; |
3fbf9cbb LP |
2039 | |
2040 | return 1; | |
2041 | } | |
c2373f84 | 2042 | |
a5344d2c LP |
2043 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2044 | if (!j) | |
2045 | return; | |
8725d60a LP |
2046 | |
2047 | j->current_field = 0; | |
c2373f84 | 2048 | } |
50f20cfd | 2049 | |
a5344d2c | 2050 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2051 | int r; |
2052 | ||
1ae464e0 TA |
2053 | assert_return(j, -EINVAL); |
2054 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2055 | |
a963990f LP |
2056 | if (j->inotify_fd >= 0) |
2057 | return j->inotify_fd; | |
2058 | ||
2059 | r = allocate_inotify(j); | |
2060 | if (r < 0) | |
2061 | return r; | |
2062 | ||
2063 | /* Iterate through all dirs again, to add them to the | |
2064 | * inotify */ | |
5302ebe1 ZJS |
2065 | if (j->no_new_files) |
2066 | r = add_current_paths(j); | |
2067 | else if (j->path) | |
89739579 | 2068 | r = add_root_directory(j, j->path); |
7827b1a1 | 2069 | else |
89739579 | 2070 | r = add_search_paths(j); |
a963990f LP |
2071 | if (r < 0) |
2072 | return r; | |
2073 | ||
50f20cfd LP |
2074 | return j->inotify_fd; |
2075 | } | |
2076 | ||
ee531d94 LP |
2077 | _public_ int sd_journal_get_events(sd_journal *j) { |
2078 | int fd; | |
2079 | ||
1ae464e0 TA |
2080 | assert_return(j, -EINVAL); |
2081 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2082 | |
2083 | fd = sd_journal_get_fd(j); | |
2084 | if (fd < 0) | |
2085 | return fd; | |
2086 | ||
2087 | return POLLIN; | |
2088 | } | |
2089 | ||
39c155ea LP |
2090 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2091 | int fd; | |
2092 | ||
1ae464e0 TA |
2093 | assert_return(j, -EINVAL); |
2094 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2095 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2096 | |
2097 | fd = sd_journal_get_fd(j); | |
2098 | if (fd < 0) | |
2099 | return fd; | |
2100 | ||
2101 | if (!j->on_network) { | |
2102 | *timeout_usec = (uint64_t) -1; | |
2103 | return 0; | |
2104 | } | |
2105 | ||
2106 | /* If we are on the network we need to regularly check for | |
2107 | * changes manually */ | |
2108 | ||
2109 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2110 | return 1; | |
2111 | } | |
2112 | ||
50f20cfd | 2113 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2114 | Directory *d; |
50f20cfd LP |
2115 | int r; |
2116 | ||
2117 | assert(j); | |
2118 | assert(e); | |
2119 | ||
2120 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2121 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2122 | if (d) { | |
2123 | sd_id128_t id; | |
50f20cfd | 2124 | |
de2c3907 LP |
2125 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2126 | (endswith(e->name, ".journal") || | |
2127 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2128 | |
2129 | /* Event for a journal file */ | |
2130 | ||
2131 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2132 | r = add_file(j, d->path, e->name); |
6fe391c5 | 2133 | if (r < 0) { |
c33b3297 MS |
2134 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
2135 | d->path, e->name); | |
3ac251b8 | 2136 | set_put_error(j, r); |
6fe391c5 | 2137 | } |
a963990f | 2138 | |
5e6870ea | 2139 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2140 | |
a963990f | 2141 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2142 | if (r < 0) |
da927ba9 | 2143 | log_debug_errno(r, "Failed to remove file %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2144 | } |
2145 | ||
a963990f | 2146 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2147 | |
a963990f | 2148 | /* Event for a subdirectory */ |
50f20cfd | 2149 | |
a963990f LP |
2150 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2151 | r = remove_directory(j, d); | |
50f20cfd | 2152 | if (r < 0) |
da927ba9 | 2153 | log_debug_errno(r, "Failed to remove directory %s: %m", d->path); |
50f20cfd LP |
2154 | } |
2155 | ||
50f20cfd | 2156 | |
a963990f | 2157 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2158 | |
a963990f | 2159 | /* Event for root directory */ |
50f20cfd | 2160 | |
a963990f LP |
2161 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2162 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2163 | if (r < 0) |
da927ba9 | 2164 | log_debug_errno(r, "Failed to add directory %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2165 | } |
2166 | } | |
2167 | ||
2168 | return; | |
2169 | } | |
2170 | ||
2171 | if (e->mask & IN_IGNORED) | |
2172 | return; | |
2173 | ||
2174 | log_warning("Unknown inotify event."); | |
2175 | } | |
2176 | ||
a963990f LP |
2177 | static int determine_change(sd_journal *j) { |
2178 | bool b; | |
2179 | ||
2180 | assert(j); | |
2181 | ||
2182 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2183 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2184 | ||
2185 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2186 | } | |
2187 | ||
a5344d2c | 2188 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2189 | bool got_something = false; |
50f20cfd | 2190 | |
1ae464e0 TA |
2191 | assert_return(j, -EINVAL); |
2192 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2193 | |
39c155ea LP |
2194 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2195 | ||
50f20cfd | 2196 | for (;;) { |
0254e944 | 2197 | union inotify_event_buffer buffer; |
50f20cfd LP |
2198 | struct inotify_event *e; |
2199 | ssize_t l; | |
2200 | ||
0254e944 | 2201 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2202 | if (l < 0) { |
a963990f LP |
2203 | if (errno == EAGAIN || errno == EINTR) |
2204 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2205 | |
2206 | return -errno; | |
2207 | } | |
2208 | ||
a963990f LP |
2209 | got_something = true; |
2210 | ||
f7c1ad4f | 2211 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2212 | process_inotify_event(j, e); |
50f20cfd LP |
2213 | } |
2214 | } | |
6ad1d1c3 | 2215 | |
e02d1cf7 | 2216 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2217 | int r; |
39c155ea | 2218 | uint64_t t; |
e02d1cf7 | 2219 | |
1ae464e0 TA |
2220 | assert_return(j, -EINVAL); |
2221 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2222 | |
a963990f LP |
2223 | if (j->inotify_fd < 0) { |
2224 | ||
2225 | /* This is the first invocation, hence create the | |
2226 | * inotify watch */ | |
2227 | r = sd_journal_get_fd(j); | |
2228 | if (r < 0) | |
2229 | return r; | |
2230 | ||
2231 | /* The journal might have changed since the context | |
2232 | * object was created and we weren't watching before, | |
2233 | * hence don't wait for anything, and return | |
2234 | * immediately. */ | |
2235 | return determine_change(j); | |
2236 | } | |
2237 | ||
39c155ea LP |
2238 | r = sd_journal_get_timeout(j, &t); |
2239 | if (r < 0) | |
2240 | return r; | |
2241 | ||
2242 | if (t != (uint64_t) -1) { | |
2243 | usec_t n; | |
2244 | ||
2245 | n = now(CLOCK_MONOTONIC); | |
2246 | t = t > n ? t - n : 0; | |
85210bff | 2247 | |
39c155ea LP |
2248 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2249 | timeout_usec = t; | |
85210bff LP |
2250 | } |
2251 | ||
a963990f LP |
2252 | do { |
2253 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2254 | } while (r == -EINTR); | |
e02d1cf7 LP |
2255 | |
2256 | if (r < 0) | |
2257 | return r; | |
2258 | ||
a963990f | 2259 | return sd_journal_process(j); |
e02d1cf7 LP |
2260 | } |
2261 | ||
08984293 LP |
2262 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2263 | Iterator i; | |
2264 | JournalFile *f; | |
2265 | bool first = true; | |
581483bf | 2266 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2267 | int r; |
2268 | ||
1ae464e0 TA |
2269 | assert_return(j, -EINVAL); |
2270 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2271 | assert_return(from || to, -EINVAL); | |
2272 | assert_return(from != to, -EINVAL); | |
08984293 | 2273 | |
c1f906bd | 2274 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2275 | usec_t fr, t; |
2276 | ||
2277 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2278 | if (r == -ENOENT) |
2279 | continue; | |
08984293 LP |
2280 | if (r < 0) |
2281 | return r; | |
2282 | if (r == 0) | |
2283 | continue; | |
2284 | ||
2285 | if (first) { | |
581483bf LP |
2286 | fmin = fr; |
2287 | tmax = t; | |
08984293 LP |
2288 | first = false; |
2289 | } else { | |
581483bf LP |
2290 | fmin = MIN(fr, fmin); |
2291 | tmax = MAX(t, tmax); | |
08984293 LP |
2292 | } |
2293 | } | |
2294 | ||
581483bf LP |
2295 | if (from) |
2296 | *from = fmin; | |
2297 | if (to) | |
2298 | *to = tmax; | |
2299 | ||
08984293 LP |
2300 | return first ? 0 : 1; |
2301 | } | |
2302 | ||
2303 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2304 | Iterator i; | |
2305 | JournalFile *f; | |
1651e2c6 | 2306 | bool found = false; |
08984293 LP |
2307 | int r; |
2308 | ||
1ae464e0 TA |
2309 | assert_return(j, -EINVAL); |
2310 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2311 | assert_return(from || to, -EINVAL); | |
2312 | assert_return(from != to, -EINVAL); | |
08984293 | 2313 | |
c1f906bd | 2314 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2315 | usec_t fr, t; |
2316 | ||
2317 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2318 | if (r == -ENOENT) |
2319 | continue; | |
08984293 LP |
2320 | if (r < 0) |
2321 | return r; | |
2322 | if (r == 0) | |
2323 | continue; | |
2324 | ||
1651e2c6 | 2325 | if (found) { |
08984293 | 2326 | if (from) |
1651e2c6 | 2327 | *from = MIN(fr, *from); |
08984293 | 2328 | if (to) |
1651e2c6 | 2329 | *to = MAX(t, *to); |
08984293 LP |
2330 | } else { |
2331 | if (from) | |
1651e2c6 | 2332 | *from = fr; |
08984293 | 2333 | if (to) |
1651e2c6 ZJS |
2334 | *to = t; |
2335 | found = true; | |
08984293 LP |
2336 | } |
2337 | } | |
2338 | ||
1651e2c6 | 2339 | return found; |
08984293 LP |
2340 | } |
2341 | ||
dca6219e LP |
2342 | void journal_print_header(sd_journal *j) { |
2343 | Iterator i; | |
2344 | JournalFile *f; | |
2345 | bool newline = false; | |
2346 | ||
2347 | assert(j); | |
2348 | ||
c1f906bd | 2349 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2350 | if (newline) |
2351 | putchar('\n'); | |
2352 | else | |
2353 | newline = true; | |
2354 | ||
2355 | journal_file_print_header(f); | |
2356 | } | |
2357 | } | |
08984293 | 2358 | |
a1a03e30 LP |
2359 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2360 | Iterator i; | |
2361 | JournalFile *f; | |
2362 | uint64_t sum = 0; | |
2363 | ||
1ae464e0 TA |
2364 | assert_return(j, -EINVAL); |
2365 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2366 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2367 | |
c1f906bd | 2368 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2369 | struct stat st; |
2370 | ||
2371 | if (fstat(f->fd, &st) < 0) | |
2372 | return -errno; | |
2373 | ||
2374 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2375 | } | |
2376 | ||
2377 | *bytes = sum; | |
2378 | return 0; | |
2379 | } | |
2380 | ||
3c1668da LP |
2381 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2382 | char *f; | |
2383 | ||
1ae464e0 TA |
2384 | assert_return(j, -EINVAL); |
2385 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2386 | assert_return(!isempty(field), -EINVAL); | |
2387 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2388 | |
2389 | f = strdup(field); | |
2390 | if (!f) | |
2391 | return -ENOMEM; | |
2392 | ||
2393 | free(j->unique_field); | |
2394 | j->unique_field = f; | |
2395 | j->unique_file = NULL; | |
2396 | j->unique_offset = 0; | |
360af4cf | 2397 | j->unique_file_lost = false; |
3c1668da LP |
2398 | |
2399 | return 0; | |
2400 | } | |
2401 | ||
2402 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2403 | size_t k; |
19a2bd80 | 2404 | |
1ae464e0 TA |
2405 | assert_return(j, -EINVAL); |
2406 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2407 | assert_return(data, -EINVAL); | |
2408 | assert_return(l, -EINVAL); | |
2409 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2410 | |
3c1668da | 2411 | k = strlen(j->unique_field); |
19a2bd80 | 2412 | |
3c1668da | 2413 | if (!j->unique_file) { |
360af4cf ZJS |
2414 | if (j->unique_file_lost) |
2415 | return 0; | |
2416 | ||
c1f906bd | 2417 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2418 | if (!j->unique_file) |
2419 | return 0; | |
360af4cf | 2420 | |
3c1668da LP |
2421 | j->unique_offset = 0; |
2422 | } | |
19a2bd80 | 2423 | |
3c1668da LP |
2424 | for (;;) { |
2425 | JournalFile *of; | |
2426 | Iterator i; | |
ae97089d | 2427 | Object *o; |
3c1668da LP |
2428 | const void *odata; |
2429 | size_t ol; | |
2430 | bool found; | |
ae97089d | 2431 | int r; |
3c1668da | 2432 | |
bdc02927 | 2433 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2434 | if (j->unique_offset == 0) { |
2435 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2436 | if (r < 0) | |
2437 | return r; | |
2438 | ||
2439 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2440 | } else { | |
2441 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2442 | if (r < 0) | |
2443 | return r; | |
2444 | ||
2445 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2446 | } | |
2447 | ||
2448 | /* We reached the end of the list? Then start again, with the next file */ | |
2449 | if (j->unique_offset == 0) { | |
c1f906bd | 2450 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2451 | if (!j->unique_file) |
3c1668da LP |
2452 | return 0; |
2453 | ||
3c1668da LP |
2454 | continue; |
2455 | } | |
2456 | ||
d05089d8 MS |
2457 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2458 | * instead, so that we can look at this data object at the same | |
3c1668da | 2459 | * time as one on another file */ |
d05089d8 | 2460 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2461 | if (r < 0) |
2462 | return r; | |
2463 | ||
2464 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2465 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2466 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2467 | j->unique_file->path, j->unique_offset, |
2468 | o->object.type, OBJECT_DATA); | |
3c1668da | 2469 | return -EBADMSG; |
ae97089d ZJS |
2470 | } |
2471 | ||
93b73b06 | 2472 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2473 | if (r < 0) |
2474 | return r; | |
2475 | ||
0f99f74a ZJS |
2476 | /* Check if we have at least the field name and "=". */ |
2477 | if (ol <= k) { | |
2478 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2479 | j->unique_file->path, j->unique_offset, | |
2480 | ol, k + 1); | |
2481 | return -EBADMSG; | |
2482 | } | |
2483 | ||
2484 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2485 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2486 | j->unique_file->path, j->unique_offset, | |
2487 | j->unique_field); | |
2488 | return -EBADMSG; | |
2489 | } | |
2490 | ||
3c1668da LP |
2491 | /* OK, now let's see if we already returned this data |
2492 | * object by checking if it exists in the earlier | |
2493 | * traversed files. */ | |
2494 | found = false; | |
c1f906bd | 2495 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2496 | Object *oo; |
2497 | uint64_t op; | |
2498 | ||
2499 | if (of == j->unique_file) | |
2500 | break; | |
2501 | ||
2502 | /* Skip this file it didn't have any fields | |
2503 | * indexed */ | |
2504 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2505 | le64toh(of->header->n_fields) <= 0) | |
2506 | continue; | |
2507 | ||
2508 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2509 | if (r < 0) | |
2510 | return r; | |
2511 | ||
2512 | if (r > 0) | |
2513 | found = true; | |
2514 | } | |
2515 | ||
06cc69d4 JJ |
2516 | if (found) |
2517 | continue; | |
2518 | ||
93b73b06 | 2519 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2520 | if (r < 0) |
2521 | return r; | |
2522 | ||
2523 | return 1; | |
2524 | } | |
2525 | } | |
2526 | ||
115646c7 | 2527 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2528 | if (!j) |
2529 | return; | |
2530 | ||
2531 | j->unique_file = NULL; | |
2532 | j->unique_offset = 0; | |
360af4cf | 2533 | j->unique_file_lost = false; |
3c1668da | 2534 | } |
85210bff LP |
2535 | |
2536 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
1ae464e0 TA |
2537 | assert_return(j, -EINVAL); |
2538 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2539 | |
2540 | return !j->on_network; | |
2541 | } | |
d4205751 LP |
2542 | |
2543 | static char *lookup_field(const char *field, void *userdata) { | |
2544 | sd_journal *j = userdata; | |
2545 | const void *data; | |
2546 | size_t size, d; | |
2547 | int r; | |
2548 | ||
2549 | assert(field); | |
2550 | assert(j); | |
2551 | ||
2552 | r = sd_journal_get_data(j, field, &data, &size); | |
2553 | if (r < 0 || | |
2554 | size > REPLACE_VAR_MAX) | |
2555 | return strdup(field); | |
2556 | ||
2557 | d = strlen(field) + 1; | |
2558 | ||
2559 | return strndup((const char*) data + d, size - d); | |
2560 | } | |
2561 | ||
2562 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2563 | const void *data; | |
2564 | size_t size; | |
2565 | sd_id128_t id; | |
2566 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2567 | char *t; | |
2568 | int r; | |
2569 | ||
1ae464e0 TA |
2570 | assert_return(j, -EINVAL); |
2571 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2572 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2573 | |
2574 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2575 | if (r < 0) | |
2576 | return r; | |
2577 | ||
2578 | cid = strndup((const char*) data + 11, size - 11); | |
2579 | if (!cid) | |
2580 | return -ENOMEM; | |
2581 | ||
2582 | r = sd_id128_from_string(cid, &id); | |
2583 | if (r < 0) | |
2584 | return r; | |
2585 | ||
844ec79b | 2586 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2587 | if (r < 0) |
2588 | return r; | |
2589 | ||
2590 | t = replace_var(text, lookup_field, j); | |
2591 | if (!t) | |
2592 | return -ENOMEM; | |
2593 | ||
2594 | *ret = t; | |
2595 | return 0; | |
2596 | } | |
8f1e860f LP |
2597 | |
2598 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2599 | assert_return(ret, -EINVAL); |
8f1e860f | 2600 | |
844ec79b | 2601 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2602 | } |
93b73b06 LP |
2603 | |
2604 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2605 | assert_return(j, -EINVAL); |
2606 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2607 | |
2608 | j->data_threshold = sz; | |
2609 | return 0; | |
2610 | } | |
2611 | ||
2612 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2613 | assert_return(j, -EINVAL); |
2614 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2615 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2616 | |
2617 | *sz = j->data_threshold; | |
2618 | return 0; | |
2619 | } |