]>
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> |
07630cea LP |
24 | #include <linux/magic.h> |
25 | #include <poll.h> | |
3fbf9cbb | 26 | #include <stddef.h> |
50f20cfd | 27 | #include <sys/inotify.h> |
85210bff | 28 | #include <sys/vfs.h> |
07630cea | 29 | #include <unistd.h> |
87d2c1ff LP |
30 | |
31 | #include "sd-journal.h" | |
c004493c | 32 | |
b5efdb8a | 33 | #include "alloc-util.h" |
07630cea LP |
34 | #include "catalog.h" |
35 | #include "compress.h" | |
a0956174 | 36 | #include "dirent-util.h" |
3ffd4af2 | 37 | #include "fd-util.h" |
07630cea LP |
38 | #include "fileio.h" |
39 | #include "formats-util.h" | |
77601719 | 40 | #include "fs-util.h" |
07630cea LP |
41 | #include "hashmap.h" |
42 | #include "hostname-util.h" | |
c004493c | 43 | #include "io-util.h" |
87d2c1ff | 44 | #include "journal-def.h" |
cec736d2 | 45 | #include "journal-file.h" |
07630cea | 46 | #include "journal-internal.h" |
cec736d2 | 47 | #include "list.h" |
de7b95cd | 48 | #include "lookup3.h" |
85210bff | 49 | #include "missing.h" |
07630cea | 50 | #include "path-util.h" |
d4205751 | 51 | #include "replace-var.h" |
15a5e950 LP |
52 | #include "stat-util.h" |
53 | #include "stdio-util.h" | |
07630cea LP |
54 | #include "string-util.h" |
55 | #include "strv.h" | |
87d2c1ff | 56 | |
9e8abdf0 LP |
57 | #define JOURNAL_FILES_MAX 7168 |
58 | ||
85210bff LP |
59 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
60 | ||
d4205751 LP |
61 | #define REPLACE_VAR_MAX 256 |
62 | ||
93b73b06 LP |
63 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
64 | ||
a9a245c1 ZJS |
65 | static void remove_file_real(sd_journal *j, JournalFile *f); |
66 | ||
a65f06bb ZJS |
67 | static bool journal_pid_changed(sd_journal *j) { |
68 | assert(j); | |
69 | ||
70 | /* We don't support people creating a journal object and | |
71 | * keeping it around over a fork(). Let's complain. */ | |
72 | ||
73 | return j->original_pid != getpid(); | |
74 | } | |
75 | ||
6fe391c5 ZJS |
76 | /* We return an error here only if we didn't manage to |
77 | memorize the real error. */ | |
3ac251b8 LP |
78 | static int set_put_error(sd_journal *j, int r) { |
79 | int k; | |
80 | ||
6fe391c5 ZJS |
81 | if (r >= 0) |
82 | return r; | |
83 | ||
d5099efc | 84 | k = set_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
85 | if (k < 0) |
86 | return k; | |
87 | ||
88 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
89 | } |
90 | ||
de190aef | 91 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
92 | Iterator i; |
93 | JournalFile *f; | |
94 | ||
95 | assert(j); | |
96 | ||
97 | j->current_file = NULL; | |
98 | j->current_field = 0; | |
99 | ||
c1f906bd | 100 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 101 | journal_file_reset_location(f); |
8f9b6cd9 LP |
102 | } |
103 | ||
de190aef LP |
104 | static void reset_location(sd_journal *j) { |
105 | assert(j); | |
106 | ||
107 | detach_location(j); | |
108 | zero(j->current_location); | |
109 | } | |
110 | ||
a87247dd | 111 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 112 | assert(l); |
a87247dd | 113 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
114 | assert(f); |
115 | assert(o->object.type == OBJECT_ENTRY); | |
116 | ||
a87247dd | 117 | l->type = type; |
de190aef LP |
118 | l->seqnum = le64toh(o->entry.seqnum); |
119 | l->seqnum_id = f->header->seqnum_id; | |
120 | l->realtime = le64toh(o->entry.realtime); | |
121 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 122 | l->boot_id = o->entry.boot_id; |
de190aef LP |
123 | l->xor_hash = le64toh(o->entry.xor_hash); |
124 | ||
125 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
126 | } | |
127 | ||
1eb6332d | 128 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
129 | assert(j); |
130 | assert(f); | |
131 | assert(o); | |
132 | ||
1eb6332d | 133 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
134 | |
135 | j->current_file = f; | |
136 | j->current_field = 0; | |
137 | ||
6573ef05 MS |
138 | /* Let f know its candidate entry was picked. */ |
139 | assert(f->location_type == LOCATION_SEEK); | |
140 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
141 | } |
142 | ||
cbdca852 LP |
143 | static int match_is_valid(const void *data, size_t size) { |
144 | const char *b, *p; | |
145 | ||
146 | assert(data); | |
147 | ||
148 | if (size < 2) | |
149 | return false; | |
150 | ||
151 | if (startswith(data, "__")) | |
152 | return false; | |
153 | ||
154 | b = data; | |
155 | for (p = b; p < b + size; p++) { | |
156 | ||
157 | if (*p == '=') | |
158 | return p > b; | |
159 | ||
160 | if (*p == '_') | |
161 | continue; | |
162 | ||
163 | if (*p >= 'A' && *p <= 'Z') | |
164 | continue; | |
165 | ||
166 | if (*p >= '0' && *p <= '9') | |
167 | continue; | |
168 | ||
169 | return false; | |
170 | } | |
171 | ||
172 | return false; | |
173 | } | |
174 | ||
175 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
176 | const uint8_t *a = _a, *b = _b; |
177 | size_t j; | |
de190aef LP |
178 | |
179 | for (j = 0; j < s && j < t; j++) { | |
180 | ||
de190aef | 181 | if (a[j] != b[j]) |
cbdca852 | 182 | return false; |
de190aef | 183 | |
cbdca852 LP |
184 | if (a[j] == '=') |
185 | return true; | |
de190aef LP |
186 | } |
187 | ||
bc302926 | 188 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
189 | } |
190 | ||
191 | static Match *match_new(Match *p, MatchType t) { | |
192 | Match *m; | |
193 | ||
194 | m = new0(Match, 1); | |
195 | if (!m) | |
196 | return NULL; | |
197 | ||
198 | m->type = t; | |
199 | ||
200 | if (p) { | |
201 | m->parent = p; | |
71fda00f | 202 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
203 | } |
204 | ||
205 | return m; | |
206 | } | |
207 | ||
208 | static void match_free(Match *m) { | |
209 | assert(m); | |
210 | ||
211 | while (m->matches) | |
212 | match_free(m->matches); | |
213 | ||
214 | if (m->parent) | |
71fda00f | 215 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
216 | |
217 | free(m->data); | |
218 | free(m); | |
219 | } | |
220 | ||
221 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 222 | if (!m || m->matches) |
cbdca852 LP |
223 | return; |
224 | ||
225 | match_free(m); | |
de190aef LP |
226 | } |
227 | ||
a5344d2c | 228 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 229 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 230 | le64_t le_hash; |
87d2c1ff | 231 | |
1ae464e0 TA |
232 | assert_return(j, -EINVAL); |
233 | assert_return(!journal_pid_changed(j), -ECHILD); | |
234 | assert_return(data, -EINVAL); | |
cbdca852 LP |
235 | |
236 | if (size == 0) | |
237 | size = strlen(data); | |
238 | ||
1ae464e0 | 239 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 240 | |
cd34b3c6 HH |
241 | /* level 0: AND term |
242 | * level 1: OR terms | |
243 | * level 2: AND terms | |
244 | * level 3: OR terms | |
245 | * level 4: concrete matches */ | |
cbdca852 LP |
246 | |
247 | if (!j->level0) { | |
cd34b3c6 | 248 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
249 | if (!j->level0) |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
253 | if (!j->level1) { | |
cd34b3c6 | 254 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
255 | if (!j->level1) |
256 | return -ENOMEM; | |
257 | } | |
258 | ||
cd34b3c6 HH |
259 | if (!j->level2) { |
260 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
261 | if (!j->level2) | |
262 | return -ENOMEM; | |
263 | } | |
264 | ||
265 | assert(j->level0->type == MATCH_AND_TERM); | |
266 | assert(j->level1->type == MATCH_OR_TERM); | |
267 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 268 | |
de190aef LP |
269 | le_hash = htole64(hash64(data, size)); |
270 | ||
cd34b3c6 HH |
271 | LIST_FOREACH(matches, l3, j->level2->matches) { |
272 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 273 | |
cd34b3c6 HH |
274 | LIST_FOREACH(matches, l4, l3->matches) { |
275 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 276 | |
cbdca852 LP |
277 | /* Exactly the same match already? Then ignore |
278 | * this addition */ | |
cd34b3c6 HH |
279 | if (l4->le_hash == le_hash && |
280 | l4->size == size && | |
281 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
282 | return 0; |
283 | ||
284 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
285 | if (same_field(data, size, l4->data, l4->size)) { |
286 | add_here = l3; | |
cbdca852 LP |
287 | break; |
288 | } | |
289 | } | |
290 | ||
291 | if (add_here) | |
292 | break; | |
de190aef LP |
293 | } |
294 | ||
cbdca852 | 295 | if (!add_here) { |
cd34b3c6 | 296 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
297 | if (!add_here) |
298 | goto fail; | |
299 | } | |
300 | ||
301 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 302 | if (!m) |
cbdca852 | 303 | goto fail; |
87d2c1ff | 304 | |
cbdca852 | 305 | m->le_hash = le_hash; |
1cc101f1 | 306 | m->size = size; |
cbdca852 LP |
307 | m->data = memdup(data, size); |
308 | if (!m->data) | |
309 | goto fail; | |
310 | ||
311 | detach_location(j); | |
312 | ||
313 | return 0; | |
314 | ||
315 | fail: | |
c5a10d9c ZJS |
316 | match_free_if_empty(add_here); |
317 | match_free_if_empty(j->level2); | |
318 | match_free_if_empty(j->level1); | |
319 | match_free_if_empty(j->level0); | |
cbdca852 LP |
320 | |
321 | return -ENOMEM; | |
322 | } | |
323 | ||
cd34b3c6 | 324 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
325 | assert_return(j, -EINVAL); |
326 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 327 | |
cbdca852 LP |
328 | if (!j->level0) |
329 | return 0; | |
330 | ||
331 | if (!j->level1) | |
332 | return 0; | |
333 | ||
334 | if (!j->level1->matches) | |
335 | return 0; | |
336 | ||
cd34b3c6 HH |
337 | j->level1 = NULL; |
338 | j->level2 = NULL; | |
339 | ||
340 | return 0; | |
341 | } | |
342 | ||
343 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
344 | assert_return(j, -EINVAL); |
345 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
346 | |
347 | if (!j->level0) | |
348 | return 0; | |
349 | ||
350 | if (!j->level1) | |
351 | return 0; | |
352 | ||
353 | if (!j->level2) | |
354 | return 0; | |
355 | ||
356 | if (!j->level2->matches) | |
357 | return 0; | |
cbdca852 | 358 | |
cd34b3c6 | 359 | j->level2 = NULL; |
cbdca852 LP |
360 | return 0; |
361 | } | |
362 | ||
363 | static char *match_make_string(Match *m) { | |
364 | char *p, *r; | |
365 | Match *i; | |
366 | bool enclose = false; | |
367 | ||
368 | if (!m) | |
4ad16808 | 369 | return strdup("none"); |
cbdca852 LP |
370 | |
371 | if (m->type == MATCH_DISCRETE) | |
372 | return strndup(m->data, m->size); | |
373 | ||
374 | p = NULL; | |
375 | LIST_FOREACH(matches, i, m->matches) { | |
376 | char *t, *k; | |
377 | ||
378 | t = match_make_string(i); | |
379 | if (!t) { | |
380 | free(p); | |
381 | return NULL; | |
382 | } | |
383 | ||
384 | if (p) { | |
b7def684 | 385 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
386 | free(p); |
387 | free(t); | |
388 | ||
389 | if (!k) | |
390 | return NULL; | |
391 | ||
392 | p = k; | |
393 | ||
394 | enclose = true; | |
bc302926 | 395 | } else |
cbdca852 | 396 | p = t; |
87d2c1ff LP |
397 | } |
398 | ||
cbdca852 | 399 | if (enclose) { |
b7def684 | 400 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
401 | free(p); |
402 | return r; | |
403 | } | |
87d2c1ff | 404 | |
cbdca852 LP |
405 | return p; |
406 | } | |
de7b95cd | 407 | |
cbdca852 LP |
408 | char *journal_make_match_string(sd_journal *j) { |
409 | assert(j); | |
8f9b6cd9 | 410 | |
cbdca852 | 411 | return match_make_string(j->level0); |
87d2c1ff LP |
412 | } |
413 | ||
a5344d2c LP |
414 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
415 | if (!j) | |
416 | return; | |
87d2c1ff | 417 | |
cbdca852 LP |
418 | if (j->level0) |
419 | match_free(j->level0); | |
de7b95cd | 420 | |
cd34b3c6 | 421 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 422 | |
de190aef | 423 | detach_location(j); |
87d2c1ff LP |
424 | } |
425 | ||
487d3720 MS |
426 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
427 | assert(f); | |
de190aef | 428 | assert(l); |
487d3720 | 429 | assert(f->location_type == LOCATION_SEEK); |
a87247dd | 430 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
431 | |
432 | if (l->monotonic_set && | |
487d3720 | 433 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 434 | l->realtime_set && |
487d3720 | 435 | f->current_realtime == l->realtime && |
de190aef | 436 | l->xor_hash_set && |
487d3720 | 437 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
438 | return 0; |
439 | ||
440 | if (l->seqnum_set && | |
487d3720 | 441 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 442 | |
487d3720 | 443 | if (f->current_seqnum < l->seqnum) |
de190aef | 444 | return -1; |
487d3720 | 445 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
446 | return 1; |
447 | } | |
448 | ||
449 | if (l->monotonic_set && | |
487d3720 | 450 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 451 | |
487d3720 | 452 | if (f->current_monotonic < l->monotonic) |
de190aef | 453 | return -1; |
487d3720 | 454 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
455 | return 1; |
456 | } | |
457 | ||
458 | if (l->realtime_set) { | |
459 | ||
487d3720 | 460 | if (f->current_realtime < l->realtime) |
de190aef | 461 | return -1; |
487d3720 | 462 | if (f->current_realtime > l->realtime) |
de190aef LP |
463 | return 1; |
464 | } | |
465 | ||
466 | if (l->xor_hash_set) { | |
de190aef | 467 | |
487d3720 | 468 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 469 | return -1; |
487d3720 | 470 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
471 | return 1; |
472 | } | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
cbdca852 LP |
477 | static int next_for_match( |
478 | sd_journal *j, | |
479 | Match *m, | |
480 | JournalFile *f, | |
481 | uint64_t after_offset, | |
482 | direction_t direction, | |
483 | Object **ret, | |
484 | uint64_t *offset) { | |
485 | ||
de7b95cd | 486 | int r; |
cbdca852 LP |
487 | uint64_t np = 0; |
488 | Object *n; | |
de7b95cd LP |
489 | |
490 | assert(j); | |
cbdca852 LP |
491 | assert(m); |
492 | assert(f); | |
de7b95cd | 493 | |
cbdca852 LP |
494 | if (m->type == MATCH_DISCRETE) { |
495 | uint64_t dp; | |
de190aef | 496 | |
cbdca852 | 497 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
498 | if (r <= 0) |
499 | return r; | |
500 | ||
cbdca852 | 501 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 502 | |
cbdca852 LP |
503 | } else if (m->type == MATCH_OR_TERM) { |
504 | Match *i; | |
de7b95cd | 505 | |
cbdca852 | 506 | /* Find the earliest match beyond after_offset */ |
de190aef | 507 | |
cbdca852 LP |
508 | LIST_FOREACH(matches, i, m->matches) { |
509 | uint64_t cp; | |
de190aef | 510 | |
cbdca852 | 511 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
512 | if (r < 0) |
513 | return r; | |
cbdca852 | 514 | else if (r > 0) { |
bc302926 | 515 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
516 | np = cp; |
517 | } | |
518 | } | |
b4e5f920 | 519 | |
bc302926 ZJS |
520 | if (np == 0) |
521 | return 0; | |
522 | ||
cbdca852 | 523 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 524 | Match *i, *last_moved; |
de190aef | 525 | |
cbdca852 | 526 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 527 | * this until we find an offset that matches for all |
cbdca852 | 528 | * matches. */ |
de190aef | 529 | |
cbdca852 LP |
530 | if (!m->matches) |
531 | return 0; | |
de7b95cd | 532 | |
2bc8ca0c ZJS |
533 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
534 | if (r <= 0) | |
535 | return r; | |
de190aef | 536 | |
2bc8ca0c ZJS |
537 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
538 | last_moved = m->matches; | |
de190aef | 539 | |
2bc8ca0c ZJS |
540 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
541 | uint64_t cp; | |
de190aef | 542 | |
2bc8ca0c ZJS |
543 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
544 | if (r <= 0) | |
545 | return r; | |
de190aef | 546 | |
2bc8ca0c ZJS |
547 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
548 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
549 | np = cp; | |
550 | last_moved = i; | |
de190aef | 551 | } |
2bc8ca0c | 552 | } |
cbdca852 | 553 | } |
de190aef | 554 | |
bc302926 | 555 | assert(np > 0); |
de190aef | 556 | |
cbdca852 LP |
557 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
558 | if (r < 0) | |
559 | return r; | |
de7b95cd | 560 | |
de190aef | 561 | if (ret) |
cbdca852 | 562 | *ret = n; |
de190aef | 563 | if (offset) |
cbdca852 | 564 | *offset = np; |
de190aef LP |
565 | |
566 | return 1; | |
567 | } | |
568 | ||
cbdca852 LP |
569 | static int find_location_for_match( |
570 | sd_journal *j, | |
571 | Match *m, | |
572 | JournalFile *f, | |
573 | direction_t direction, | |
574 | Object **ret, | |
575 | uint64_t *offset) { | |
576 | ||
de190aef | 577 | int r; |
de190aef LP |
578 | |
579 | assert(j); | |
cbdca852 | 580 | assert(m); |
de190aef | 581 | assert(f); |
de190aef | 582 | |
cbdca852 LP |
583 | if (m->type == MATCH_DISCRETE) { |
584 | uint64_t dp; | |
de190aef | 585 | |
cbdca852 | 586 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
587 | if (r <= 0) |
588 | return r; | |
589 | ||
cbdca852 | 590 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 591 | |
cbdca852 LP |
592 | if (j->current_location.type == LOCATION_HEAD) |
593 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
594 | if (j->current_location.type == LOCATION_TAIL) | |
595 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
596 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
597 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
598 | if (j->current_location.monotonic_set) { | |
599 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
600 | if (r != -ENOENT) | |
601 | return r; | |
602 | } | |
603 | if (j->current_location.realtime_set) | |
604 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 605 | |
cbdca852 | 606 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 607 | |
cbdca852 LP |
608 | } else if (m->type == MATCH_OR_TERM) { |
609 | uint64_t np = 0; | |
610 | Object *n; | |
611 | Match *i; | |
de7b95cd | 612 | |
cbdca852 | 613 | /* Find the earliest match */ |
de7b95cd | 614 | |
cbdca852 LP |
615 | LIST_FOREACH(matches, i, m->matches) { |
616 | uint64_t cp; | |
617 | ||
618 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
619 | if (r < 0) | |
620 | return r; | |
621 | else if (r > 0) { | |
622 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
623 | np = cp; | |
de190aef | 624 | } |
cbdca852 | 625 | } |
de190aef | 626 | |
cbdca852 LP |
627 | if (np == 0) |
628 | return 0; | |
de7b95cd | 629 | |
cbdca852 LP |
630 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
631 | if (r < 0) | |
632 | return r; | |
de7b95cd | 633 | |
cbdca852 LP |
634 | if (ret) |
635 | *ret = n; | |
636 | if (offset) | |
637 | *offset = np; | |
de190aef | 638 | |
cbdca852 | 639 | return 1; |
e892bd17 | 640 | |
cbdca852 LP |
641 | } else { |
642 | Match *i; | |
643 | uint64_t np = 0; | |
644 | ||
645 | assert(m->type == MATCH_AND_TERM); | |
646 | ||
647 | /* First jump to the last match, and then find the | |
648 | * next one where all matches match */ | |
649 | ||
650 | if (!m->matches) | |
651 | return 0; | |
652 | ||
653 | LIST_FOREACH(matches, i, m->matches) { | |
654 | uint64_t cp; | |
655 | ||
656 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
657 | if (r <= 0) | |
4b067dc9 LP |
658 | return r; |
659 | ||
bc302926 | 660 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 661 | np = cp; |
de7b95cd LP |
662 | } |
663 | ||
cbdca852 LP |
664 | return next_for_match(j, m, f, np, direction, ret, offset); |
665 | } | |
666 | } | |
de190aef | 667 | |
cbdca852 LP |
668 | static int find_location_with_matches( |
669 | sd_journal *j, | |
670 | JournalFile *f, | |
671 | direction_t direction, | |
672 | Object **ret, | |
673 | uint64_t *offset) { | |
674 | ||
675 | int r; | |
676 | ||
677 | assert(j); | |
678 | assert(f); | |
679 | assert(ret); | |
680 | assert(offset); | |
681 | ||
682 | if (!j->level0) { | |
683 | /* No matches is simple */ | |
684 | ||
685 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 686 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 687 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 688 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
689 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
690 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
691 | if (j->current_location.monotonic_set) { | |
692 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
693 | if (r != -ENOENT) | |
694 | return r; | |
de7b95cd | 695 | } |
cbdca852 LP |
696 | if (j->current_location.realtime_set) |
697 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 698 | |
f534928a | 699 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
700 | } else |
701 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
702 | } | |
de7b95cd | 703 | |
cbdca852 LP |
704 | static int next_with_matches( |
705 | sd_journal *j, | |
706 | JournalFile *f, | |
707 | direction_t direction, | |
708 | Object **ret, | |
709 | uint64_t *offset) { | |
710 | ||
cbdca852 LP |
711 | assert(j); |
712 | assert(f); | |
713 | assert(ret); | |
714 | assert(offset); | |
715 | ||
cbdca852 LP |
716 | /* No matches is easy. We simple advance the file |
717 | * pointer by one. */ | |
718 | if (!j->level0) | |
b29ddfcb | 719 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
720 | |
721 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 722 | * with an offset at least one step larger */ |
b29ddfcb MS |
723 | return next_for_match(j, j->level0, f, |
724 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
725 | : f->current_offset - 1, | |
726 | direction, ret, offset); | |
de7b95cd LP |
727 | } |
728 | ||
58439db4 | 729 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 730 | Object *c; |
6e693b42 | 731 | uint64_t cp, n_entries; |
cbdca852 | 732 | int r; |
de190aef LP |
733 | |
734 | assert(j); | |
735 | assert(f); | |
736 | ||
950c07d4 MS |
737 | n_entries = le64toh(f->header->n_entries); |
738 | ||
739 | /* If we hit EOF before, we don't need to look into this file again | |
740 | * unless direction changed or new entries appeared. */ | |
741 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
742 | n_entries == f->last_n_entries) | |
743 | return 0; | |
668c965a | 744 | |
950c07d4 MS |
745 | f->last_n_entries = n_entries; |
746 | ||
747 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
748 | /* LOCATION_SEEK here means we did the work in a previous |
749 | * iteration and the current location already points to a | |
750 | * candidate entry. */ | |
487d3720 MS |
751 | if (f->location_type != LOCATION_SEEK) { |
752 | r = next_with_matches(j, f, direction, &c, &cp); | |
753 | if (r <= 0) | |
754 | return r; | |
466ccd92 | 755 | |
950c07d4 | 756 | journal_file_save_location(f, c, cp); |
487d3720 | 757 | } |
de190aef | 758 | } else { |
950c07d4 MS |
759 | f->last_direction = direction; |
760 | ||
cbdca852 | 761 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
762 | if (r <= 0) |
763 | return r; | |
487d3720 | 764 | |
950c07d4 | 765 | journal_file_save_location(f, c, cp); |
de190aef LP |
766 | } |
767 | ||
bc302926 | 768 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
769 | * that is actually different from what we were previously |
770 | * looking at. This is necessary to handle entries which exist | |
771 | * in two (or more) journal files, and which shall all be | |
772 | * suppressed but one. */ | |
773 | ||
de190aef LP |
774 | for (;;) { |
775 | bool found; | |
776 | ||
777 | if (j->current_location.type == LOCATION_DISCRETE) { | |
778 | int k; | |
779 | ||
487d3720 | 780 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
781 | |
782 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
783 | } else |
784 | found = true; | |
785 | ||
487d3720 | 786 | if (found) |
de190aef | 787 | return 1; |
de190aef LP |
788 | |
789 | r = next_with_matches(j, f, direction, &c, &cp); | |
790 | if (r <= 0) | |
791 | return r; | |
487d3720 | 792 | |
950c07d4 | 793 | journal_file_save_location(f, c, cp); |
de190aef LP |
794 | } |
795 | } | |
796 | ||
e892bd17 | 797 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de | 798 | JournalFile *f, *new_file = NULL; |
cec736d2 | 799 | Iterator i; |
a002d44b | 800 | Object *o; |
87d2c1ff LP |
801 | int r; |
802 | ||
1ae464e0 TA |
803 | assert_return(j, -EINVAL); |
804 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 805 | |
c1f906bd | 806 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 807 | bool found; |
87d2c1ff | 808 | |
58439db4 | 809 | r = next_beyond_location(j, f, direction); |
e590af26 | 810 | if (r < 0) { |
da927ba9 | 811 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 812 | remove_file_real(j, f); |
e590af26 | 813 | continue; |
6573ef05 MS |
814 | } else if (r == 0) { |
815 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 816 | continue; |
6573ef05 | 817 | } |
87d2c1ff | 818 | |
468b21de | 819 | if (!new_file) |
de190aef LP |
820 | found = true; |
821 | else { | |
822 | int k; | |
823 | ||
d8ae66d7 | 824 | k = journal_file_compare_locations(f, new_file); |
de190aef | 825 | |
bc302926 | 826 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
827 | } |
828 | ||
e499c999 | 829 | if (found) |
468b21de | 830 | new_file = f; |
87d2c1ff LP |
831 | } |
832 | ||
468b21de | 833 | if (!new_file) |
de190aef | 834 | return 0; |
ae2cc8ef | 835 | |
e499c999 | 836 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
837 | if (r < 0) |
838 | return r; | |
839 | ||
1eb6332d | 840 | set_location(j, new_file, o); |
ae2cc8ef | 841 | |
de190aef LP |
842 | return 1; |
843 | } | |
ae2cc8ef | 844 | |
a5344d2c | 845 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
846 | return real_journal_next(j, DIRECTION_DOWN); |
847 | } | |
ae2cc8ef | 848 | |
a5344d2c | 849 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
850 | return real_journal_next(j, DIRECTION_UP); |
851 | } | |
ae2cc8ef | 852 | |
6f003b43 | 853 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 854 | int c = 0, r; |
ae2cc8ef | 855 | |
1ae464e0 TA |
856 | assert_return(j, -EINVAL); |
857 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 858 | |
6f003b43 LP |
859 | if (skip == 0) { |
860 | /* If this is not a discrete skip, then at least | |
861 | * resolve the current location */ | |
862 | if (j->current_location.type != LOCATION_DISCRETE) | |
863 | return real_journal_next(j, direction); | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | do { | |
869 | r = real_journal_next(j, direction); | |
de190aef LP |
870 | if (r < 0) |
871 | return r; | |
872 | ||
873 | if (r == 0) | |
874 | return c; | |
875 | ||
876 | skip--; | |
877 | c++; | |
6f003b43 | 878 | } while (skip > 0); |
87d2c1ff | 879 | |
de190aef | 880 | return c; |
87d2c1ff LP |
881 | } |
882 | ||
6f003b43 LP |
883 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
884 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
885 | } | |
de190aef | 886 | |
6f003b43 LP |
887 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
888 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
889 | } |
890 | ||
a5344d2c | 891 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 892 | Object *o; |
87d2c1ff | 893 | int r; |
3fbf9cbb | 894 | char bid[33], sid[33]; |
87d2c1ff | 895 | |
1ae464e0 TA |
896 | assert_return(j, -EINVAL); |
897 | assert_return(!journal_pid_changed(j), -ECHILD); | |
898 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 899 | |
3fbf9cbb LP |
900 | if (!j->current_file || j->current_file->current_offset <= 0) |
901 | return -EADDRNOTAVAIL; | |
87d2c1ff | 902 | |
de190aef | 903 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
904 | if (r < 0) |
905 | return r; | |
906 | ||
3fbf9cbb LP |
907 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
908 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 909 | |
3fbf9cbb | 910 | if (asprintf(cursor, |
507f22bd ZJS |
911 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
912 | sid, le64toh(o->entry.seqnum), | |
913 | bid, le64toh(o->entry.monotonic), | |
914 | le64toh(o->entry.realtime), | |
915 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 916 | return -ENOMEM; |
87d2c1ff | 917 | |
6f47ad30 | 918 | return 0; |
87d2c1ff LP |
919 | } |
920 | ||
a5344d2c | 921 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 922 | const char *word, *state; |
de190aef | 923 | size_t l; |
de190aef LP |
924 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
925 | bool | |
926 | seqnum_id_set = false, | |
927 | seqnum_set = false, | |
928 | boot_id_set = false, | |
929 | monotonic_set = false, | |
930 | realtime_set = false, | |
931 | xor_hash_set = false; | |
932 | sd_id128_t seqnum_id, boot_id; | |
933 | ||
1ae464e0 TA |
934 | assert_return(j, -EINVAL); |
935 | assert_return(!journal_pid_changed(j), -ECHILD); | |
936 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 937 | |
a2a5291b | 938 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
939 | char *item; |
940 | int k = 0; | |
941 | ||
a2a5291b | 942 | if (l < 2 || word[1] != '=') |
de190aef LP |
943 | return -EINVAL; |
944 | ||
a2a5291b | 945 | item = strndup(word, l); |
de190aef LP |
946 | if (!item) |
947 | return -ENOMEM; | |
948 | ||
a2a5291b | 949 | switch (word[0]) { |
de190aef LP |
950 | |
951 | case 's': | |
952 | seqnum_id_set = true; | |
be3ea5ea | 953 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
954 | break; |
955 | ||
956 | case 'i': | |
957 | seqnum_set = true; | |
be3ea5ea | 958 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
959 | k = -EINVAL; |
960 | break; | |
961 | ||
962 | case 'b': | |
963 | boot_id_set = true; | |
be3ea5ea | 964 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
965 | break; |
966 | ||
967 | case 'm': | |
968 | monotonic_set = true; | |
be3ea5ea | 969 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
970 | k = -EINVAL; |
971 | break; | |
972 | ||
973 | case 't': | |
974 | realtime_set = true; | |
be3ea5ea | 975 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
976 | k = -EINVAL; |
977 | break; | |
978 | ||
979 | case 'x': | |
980 | xor_hash_set = true; | |
be3ea5ea | 981 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
982 | k = -EINVAL; |
983 | break; | |
984 | } | |
985 | ||
986 | free(item); | |
987 | ||
988 | if (k < 0) | |
989 | return k; | |
990 | } | |
991 | ||
992 | if ((!seqnum_set || !seqnum_id_set) && | |
993 | (!monotonic_set || !boot_id_set) && | |
994 | !realtime_set) | |
995 | return -EINVAL; | |
996 | ||
997 | reset_location(j); | |
998 | ||
a87247dd | 999 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1000 | |
1001 | if (realtime_set) { | |
1002 | j->current_location.realtime = (uint64_t) realtime; | |
1003 | j->current_location.realtime_set = true; | |
1004 | } | |
1005 | ||
1006 | if (seqnum_set && seqnum_id_set) { | |
1007 | j->current_location.seqnum = (uint64_t) seqnum; | |
1008 | j->current_location.seqnum_id = seqnum_id; | |
1009 | j->current_location.seqnum_set = true; | |
1010 | } | |
1011 | ||
1012 | if (monotonic_set && boot_id_set) { | |
1013 | j->current_location.monotonic = (uint64_t) monotonic; | |
1014 | j->current_location.boot_id = boot_id; | |
1015 | j->current_location.monotonic_set = true; | |
1016 | } | |
1017 | ||
1018 | if (xor_hash_set) { | |
1019 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1020 | j->current_location.xor_hash_set = true; | |
1021 | } | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
c6511e85 LP |
1026 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1027 | int r; | |
a2a5291b | 1028 | const char *word, *state; |
c6511e85 LP |
1029 | size_t l; |
1030 | Object *o; | |
1031 | ||
1ae464e0 TA |
1032 | assert_return(j, -EINVAL); |
1033 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1034 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1035 | |
1036 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1037 | return -EADDRNOTAVAIL; | |
1038 | ||
1039 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1040 | if (r < 0) | |
1041 | return r; | |
1042 | ||
a2a5291b | 1043 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
c6511e85 LP |
1044 | _cleanup_free_ char *item = NULL; |
1045 | sd_id128_t id; | |
1046 | unsigned long long ll; | |
1047 | int k = 0; | |
1048 | ||
a2a5291b | 1049 | if (l < 2 || word[1] != '=') |
c6511e85 LP |
1050 | return -EINVAL; |
1051 | ||
a2a5291b | 1052 | item = strndup(word, l); |
c6511e85 LP |
1053 | if (!item) |
1054 | return -ENOMEM; | |
1055 | ||
a2a5291b | 1056 | switch (word[0]) { |
c6511e85 LP |
1057 | |
1058 | case 's': | |
1059 | k = sd_id128_from_string(item+2, &id); | |
1060 | if (k < 0) | |
1061 | return k; | |
1062 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1063 | return 0; | |
1064 | break; | |
1065 | ||
1066 | case 'i': | |
1067 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1068 | return -EINVAL; | |
1069 | if (ll != le64toh(o->entry.seqnum)) | |
1070 | return 0; | |
1071 | break; | |
1072 | ||
1073 | case 'b': | |
1074 | k = sd_id128_from_string(item+2, &id); | |
1075 | if (k < 0) | |
1076 | return k; | |
1077 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1078 | return 0; | |
1079 | break; | |
1080 | ||
1081 | case 'm': | |
1082 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1083 | return -EINVAL; | |
1084 | if (ll != le64toh(o->entry.monotonic)) | |
1085 | return 0; | |
1086 | break; | |
1087 | ||
1088 | case 't': | |
1089 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1090 | return -EINVAL; | |
1091 | if (ll != le64toh(o->entry.realtime)) | |
1092 | return 0; | |
1093 | break; | |
1094 | ||
1095 | case 'x': | |
1096 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1097 | return -EINVAL; | |
1098 | if (ll != le64toh(o->entry.xor_hash)) | |
1099 | return 0; | |
1100 | break; | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | return 1; | |
1105 | } | |
1106 | ||
1107 | ||
a5344d2c | 1108 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1109 | assert_return(j, -EINVAL); |
1110 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1111 | |
1112 | reset_location(j); | |
a87247dd | 1113 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1114 | j->current_location.boot_id = boot_id; |
1115 | j->current_location.monotonic = usec; | |
1116 | j->current_location.monotonic_set = true; | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
a5344d2c | 1121 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1122 | assert_return(j, -EINVAL); |
1123 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1124 | |
1125 | reset_location(j); | |
a87247dd | 1126 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1127 | j->current_location.realtime = usec; |
1128 | j->current_location.realtime_set = true; | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
a5344d2c | 1133 | _public_ int sd_journal_seek_head(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_HEAD; | |
1139 | ||
1140 | return 0; | |
1141 | } | |
1142 | ||
a5344d2c | 1143 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1144 | assert_return(j, -EINVAL); |
1145 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1146 | |
1147 | reset_location(j); | |
1148 | j->current_location.type = LOCATION_TAIL; | |
1149 | ||
1150 | return 0; | |
87d2c1ff LP |
1151 | } |
1152 | ||
85210bff LP |
1153 | static void check_network(sd_journal *j, int fd) { |
1154 | struct statfs sfs; | |
1155 | ||
1156 | assert(j); | |
1157 | ||
1158 | if (j->on_network) | |
1159 | return; | |
1160 | ||
1161 | if (fstatfs(fd, &sfs) < 0) | |
1162 | return; | |
1163 | ||
1164 | j->on_network = | |
c51cf056 ZJS |
1165 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1166 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1167 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1168 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1169 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1170 | } |
1171 | ||
a688baa8 ZJS |
1172 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1173 | const char *full, *tilded, *atted; | |
1174 | ||
63c372cb LP |
1175 | full = strjoina(prefix, ".journal"); |
1176 | tilded = strjoina(full, "~"); | |
1177 | atted = strjoina(prefix, "@"); | |
a688baa8 ZJS |
1178 | |
1179 | return streq(filename, full) || | |
1180 | streq(filename, tilded) || | |
1181 | startswith(filename, atted); | |
1182 | } | |
1183 | ||
1184 | static bool file_type_wanted(int flags, const char *filename) { | |
1185 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1186 | return false; | |
1187 | ||
1188 | /* no flags set → every type is OK */ | |
1189 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1190 | return true; | |
1191 | ||
1192 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1193 | return true; | |
1194 | ||
1195 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1196 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1197 | ||
5ffa8c81 | 1198 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1199 | |
1200 | if (file_has_type_prefix(prefix, filename)) | |
1201 | return true; | |
1202 | } | |
1203 | ||
1204 | return false; | |
1205 | } | |
1206 | ||
5302ebe1 | 1207 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1208 | JournalFile *f = NULL; |
5302ebe1 | 1209 | int r; |
3fbf9cbb LP |
1210 | |
1211 | assert(j); | |
5302ebe1 | 1212 | assert(path); |
3fbf9cbb | 1213 | |
c1f906bd | 1214 | if (ordered_hashmap_get(j->files, path)) |
50f20cfd | 1215 | return 0; |
50f20cfd | 1216 | |
9e8abdf0 LP |
1217 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
1218 | log_warning("Too many open journal files, not adding %s.", path); | |
1219 | return set_put_error(j, -ETOOMANYREFS); | |
1220 | } | |
1221 | ||
16e9f408 | 1222 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1223 | if (r < 0) |
3fbf9cbb | 1224 | return r; |
3fbf9cbb | 1225 | |
72f59706 | 1226 | /* journal_file_dump(f); */ |
de190aef | 1227 | |
c1f906bd | 1228 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb LP |
1229 | if (r < 0) { |
1230 | journal_file_close(f); | |
1231 | return r; | |
1232 | } | |
1233 | ||
5ec76417 | 1234 | log_debug("File %s added.", f->path); |
a50d7d43 | 1235 | |
85210bff LP |
1236 | check_network(j, f->fd); |
1237 | ||
a963990f LP |
1238 | j->current_invalidate_counter ++; |
1239 | ||
50f20cfd LP |
1240 | return 0; |
1241 | } | |
1242 | ||
5302ebe1 ZJS |
1243 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1244 | _cleanup_free_ char *path = NULL; | |
1245 | int r; | |
1246 | ||
1247 | assert(j); | |
1248 | assert(prefix); | |
1249 | assert(filename); | |
1250 | ||
1251 | if (j->no_new_files || | |
1252 | !file_type_wanted(j->flags, filename)) | |
1253 | return 0; | |
1254 | ||
1255 | path = strjoin(prefix, "/", filename, NULL); | |
1256 | if (!path) | |
1257 | return -ENOMEM; | |
1258 | ||
1259 | r = add_any_file(j, path); | |
1260 | if (r == -ENOENT) | |
1261 | return 0; | |
7b300be7 | 1262 | return r; |
5302ebe1 ZJS |
1263 | } |
1264 | ||
a963990f | 1265 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
a9a245c1 | 1266 | _cleanup_free_ char *path; |
50f20cfd LP |
1267 | JournalFile *f; |
1268 | ||
1269 | assert(j); | |
1270 | assert(prefix); | |
1271 | assert(filename); | |
1272 | ||
b7def684 | 1273 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1274 | if (!path) |
50f20cfd LP |
1275 | return -ENOMEM; |
1276 | ||
c1f906bd | 1277 | f = ordered_hashmap_get(j->files, path); |
50f20cfd LP |
1278 | if (!f) |
1279 | return 0; | |
1280 | ||
a9a245c1 ZJS |
1281 | remove_file_real(j, f); |
1282 | return 0; | |
1283 | } | |
1284 | ||
1285 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1286 | assert(j); | |
1287 | assert(f); | |
1288 | ||
c1f906bd | 1289 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1290 | |
5ec76417 | 1291 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1292 | |
3c1668da LP |
1293 | if (j->current_file == f) { |
1294 | j->current_file = NULL; | |
1295 | j->current_field = 0; | |
1296 | } | |
1297 | ||
1298 | if (j->unique_file == f) { | |
360af4cf | 1299 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1300 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1301 | j->unique_offset = 0; |
360af4cf ZJS |
1302 | if (!j->unique_file) |
1303 | j->unique_file_lost = true; | |
3c1668da LP |
1304 | } |
1305 | ||
50f20cfd LP |
1306 | journal_file_close(f); |
1307 | ||
a963990f | 1308 | j->current_invalidate_counter ++; |
3fbf9cbb LP |
1309 | } |
1310 | ||
a963990f | 1311 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1312 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1313 | int r; |
7fd1b19b | 1314 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1315 | sd_id128_t id, mid; |
a963990f | 1316 | Directory *m; |
3fbf9cbb LP |
1317 | |
1318 | assert(j); | |
1319 | assert(prefix); | |
a963990f | 1320 | assert(dirname); |
3fbf9cbb | 1321 | |
d95b1fb3 ZJS |
1322 | log_debug("Considering %s/%s.", prefix, dirname); |
1323 | ||
cf244689 | 1324 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1325 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1326 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1327 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1328 | return 0; |
1329 | ||
b7def684 | 1330 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1331 | if (!path) |
3fbf9cbb LP |
1332 | return -ENOMEM; |
1333 | ||
a963990f | 1334 | d = opendir(path); |
3fbf9cbb | 1335 | if (!d) { |
56f64d95 | 1336 | log_debug_errno(errno, "Failed to open %s: %m", path); |
3fbf9cbb LP |
1337 | if (errno == ENOENT) |
1338 | return 0; | |
3fbf9cbb LP |
1339 | return -errno; |
1340 | } | |
1341 | ||
a963990f LP |
1342 | m = hashmap_get(j->directories_by_path, path); |
1343 | if (!m) { | |
1344 | m = new0(Directory, 1); | |
a50d7d43 | 1345 | if (!m) |
a963990f | 1346 | return -ENOMEM; |
a963990f LP |
1347 | |
1348 | m->is_root = false; | |
1349 | m->path = path; | |
1350 | ||
1351 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1352 | free(m); |
1353 | return -ENOMEM; | |
1354 | } | |
1355 | ||
a50d7d43 | 1356 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1357 | j->current_invalidate_counter ++; |
1358 | ||
5ec76417 | 1359 | log_debug("Directory %s added.", m->path); |
a963990f | 1360 | |
a50d7d43 | 1361 | } else if (m->is_root) |
a963990f | 1362 | return 0; |
a963990f LP |
1363 | |
1364 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1365 | ||
1366 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1367 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1368 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1369 | IN_ONLYDIR); |
a963990f LP |
1370 | |
1371 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1372 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1373 | } | |
1374 | ||
1375 | for (;;) { | |
7d5e9c0f | 1376 | struct dirent *de; |
a963990f | 1377 | |
bde1fdd7 FW |
1378 | errno = 0; |
1379 | de = readdir(d); | |
1380 | if (!de && errno != 0) { | |
1381 | r = -errno; | |
56f64d95 | 1382 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1383 | return r; |
1384 | } | |
1385 | if (!de) | |
a963990f LP |
1386 | break; |
1387 | ||
de2c3907 LP |
1388 | if (dirent_is_file_with_suffix(de, ".journal") || |
1389 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1390 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1391 | if (r < 0) { |
c33b3297 MS |
1392 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1393 | m->path, de->d_name); | |
3ac251b8 | 1394 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1395 | if (r < 0) |
1396 | return r; | |
1397 | } | |
a963990f LP |
1398 | } |
1399 | } | |
1400 | ||
85210bff LP |
1401 | check_network(j, dirfd(d)); |
1402 | ||
a963990f LP |
1403 | return 0; |
1404 | } | |
1405 | ||
89739579 | 1406 | static int add_root_directory(sd_journal *j, const char *p) { |
7fd1b19b | 1407 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1408 | Directory *m; |
1409 | int r; | |
1410 | ||
1411 | assert(j); | |
1412 | assert(p); | |
1413 | ||
1414 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1415 | !path_startswith(p, "/run")) | |
1416 | return -EINVAL; | |
1417 | ||
89739579 | 1418 | if (j->prefix) |
63c372cb | 1419 | p = strjoina(j->prefix, p); |
b6741478 | 1420 | |
a963990f LP |
1421 | d = opendir(p); |
1422 | if (!d) | |
1423 | return -errno; | |
1424 | ||
1425 | m = hashmap_get(j->directories_by_path, p); | |
1426 | if (!m) { | |
1427 | m = new0(Directory, 1); | |
a50d7d43 | 1428 | if (!m) |
a963990f | 1429 | return -ENOMEM; |
a963990f LP |
1430 | |
1431 | m->is_root = true; | |
1432 | m->path = strdup(p); | |
1433 | if (!m->path) { | |
a963990f LP |
1434 | free(m); |
1435 | return -ENOMEM; | |
1436 | } | |
1437 | ||
1438 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1439 | free(m->path); |
1440 | free(m); | |
1441 | return -ENOMEM; | |
1442 | } | |
1443 | ||
1444 | j->current_invalidate_counter ++; | |
1445 | ||
5ec76417 | 1446 | log_debug("Root directory %s added.", m->path); |
a963990f | 1447 | |
a50d7d43 | 1448 | } else if (!m->is_root) |
a963990f | 1449 | return 0; |
50f20cfd | 1450 | |
a963990f LP |
1451 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1452 | ||
1453 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1454 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1455 | IN_ONLYDIR); |
a963990f LP |
1456 | |
1457 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1458 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1459 | } | |
50f20cfd | 1460 | |
5302ebe1 ZJS |
1461 | if (j->no_new_files) |
1462 | return 0; | |
1463 | ||
3fbf9cbb | 1464 | for (;;) { |
7d5e9c0f | 1465 | struct dirent *de; |
a963990f | 1466 | sd_id128_t id; |
3fbf9cbb | 1467 | |
bde1fdd7 FW |
1468 | errno = 0; |
1469 | de = readdir(d); | |
1470 | if (!de && errno != 0) { | |
1471 | r = -errno; | |
56f64d95 | 1472 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1473 | return r; |
1474 | } | |
1475 | if (!de) | |
3fbf9cbb LP |
1476 | break; |
1477 | ||
de2c3907 LP |
1478 | if (dirent_is_file_with_suffix(de, ".journal") || |
1479 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1480 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1481 | if (r < 0) { |
c33b3297 MS |
1482 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1483 | m->path, de->d_name); | |
3ac251b8 | 1484 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1485 | if (r < 0) |
1486 | return r; | |
1487 | } | |
6f5878a2 | 1488 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1489 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1490 | ||
1491 | r = add_directory(j, m->path, de->d_name); | |
1492 | if (r < 0) | |
da927ba9 | 1493 | log_debug_errno(r, "Failed to add directory %s/%s: %m", m->path, de->d_name); |
a963990f | 1494 | } |
3fbf9cbb LP |
1495 | } |
1496 | ||
85210bff LP |
1497 | check_network(j, dirfd(d)); |
1498 | ||
a963990f LP |
1499 | return 0; |
1500 | } | |
1501 | ||
b2b46f91 | 1502 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1503 | assert(j); |
1504 | ||
1505 | if (d->wd > 0) { | |
1506 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1507 | ||
1508 | if (j->inotify_fd >= 0) | |
1509 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1510 | } | |
1511 | ||
1512 | hashmap_remove(j->directories_by_path, d->path); | |
1513 | ||
1514 | if (d->is_root) | |
5ec76417 | 1515 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1516 | else |
5ec76417 | 1517 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1518 | |
1519 | free(d->path); | |
1520 | free(d); | |
3fbf9cbb LP |
1521 | } |
1522 | ||
89739579 | 1523 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1524 | int r; |
a963990f LP |
1525 | const char search_paths[] = |
1526 | "/run/log/journal\0" | |
1527 | "/var/log/journal\0"; | |
1528 | const char *p; | |
50f20cfd LP |
1529 | |
1530 | assert(j); | |
50f20cfd | 1531 | |
a963990f LP |
1532 | /* We ignore most errors here, since the idea is to only open |
1533 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1534 | |
6fe391c5 | 1535 | NULSTR_FOREACH(p, search_paths) { |
89739579 | 1536 | r = add_root_directory(j, p); |
3ac251b8 LP |
1537 | if (r < 0 && r != -ENOENT) { |
1538 | r = set_put_error(j, r); | |
1539 | if (r < 0) | |
1540 | return r; | |
1541 | } | |
6fe391c5 | 1542 | } |
50f20cfd | 1543 | |
a963990f | 1544 | return 0; |
50f20cfd LP |
1545 | } |
1546 | ||
5302ebe1 ZJS |
1547 | static int add_current_paths(sd_journal *j) { |
1548 | Iterator i; | |
1549 | JournalFile *f; | |
1550 | ||
1551 | assert(j); | |
1552 | assert(j->no_new_files); | |
1553 | ||
1554 | /* Simply adds all directories for files we have open as | |
1555 | * "root" directories. We don't expect errors here, so we | |
1556 | * treat them as fatal. */ | |
1557 | ||
c1f906bd | 1558 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1559 | _cleanup_free_ char *dir; |
e9174f29 | 1560 | int r; |
5302ebe1 ZJS |
1561 | |
1562 | dir = dirname_malloc(f->path); | |
1563 | if (!dir) | |
1564 | return -ENOMEM; | |
1565 | ||
89739579 | 1566 | r = add_root_directory(j, dir); |
5302ebe1 ZJS |
1567 | if (r < 0) { |
1568 | set_put_error(j, r); | |
1569 | return r; | |
1570 | } | |
1571 | } | |
1572 | ||
1573 | return 0; | |
1574 | } | |
1575 | ||
1576 | ||
a963990f | 1577 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1578 | assert(j); |
50f20cfd | 1579 | |
a963990f LP |
1580 | if (j->inotify_fd < 0) { |
1581 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1582 | if (j->inotify_fd < 0) | |
1583 | return -errno; | |
1584 | } | |
50f20cfd | 1585 | |
a963990f | 1586 | if (!j->directories_by_wd) { |
d5099efc | 1587 | j->directories_by_wd = hashmap_new(NULL); |
a963990f LP |
1588 | if (!j->directories_by_wd) |
1589 | return -ENOMEM; | |
50f20cfd | 1590 | } |
a963990f LP |
1591 | |
1592 | return 0; | |
50f20cfd LP |
1593 | } |
1594 | ||
7827b1a1 | 1595 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1596 | sd_journal *j; |
50f20cfd | 1597 | |
a963990f LP |
1598 | j = new0(sd_journal, 1); |
1599 | if (!j) | |
1600 | return NULL; | |
50f20cfd | 1601 | |
a65f06bb | 1602 | j->original_pid = getpid(); |
a963990f LP |
1603 | j->inotify_fd = -1; |
1604 | j->flags = flags; | |
93b73b06 | 1605 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1606 | |
7827b1a1 LP |
1607 | if (path) { |
1608 | j->path = strdup(path); | |
6180fc61 ZJS |
1609 | if (!j->path) |
1610 | goto fail; | |
7827b1a1 LP |
1611 | } |
1612 | ||
c1f906bd | 1613 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1614 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1615 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1616 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1617 | goto fail; |
16e9f408 | 1618 | |
a963990f | 1619 | return j; |
6180fc61 ZJS |
1620 | |
1621 | fail: | |
1622 | sd_journal_close(j); | |
1623 | return NULL; | |
50f20cfd LP |
1624 | } |
1625 | ||
a5344d2c | 1626 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1627 | sd_journal *j; |
3fbf9cbb | 1628 | int r; |
87d2c1ff | 1629 | |
1ae464e0 | 1630 | assert_return(ret, -EINVAL); |
b6741478 | 1631 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1632 | |
7827b1a1 | 1633 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1634 | if (!j) |
1635 | return -ENOMEM; | |
1636 | ||
89739579 | 1637 | r = add_search_paths(j); |
a963990f | 1638 | if (r < 0) |
50f20cfd | 1639 | goto fail; |
50f20cfd | 1640 | |
a963990f LP |
1641 | *ret = j; |
1642 | return 0; | |
cf244689 | 1643 | |
a963990f LP |
1644 | fail: |
1645 | sd_journal_close(j); | |
87d2c1ff | 1646 | |
a963990f LP |
1647 | return r; |
1648 | } | |
50f20cfd | 1649 | |
b6741478 LP |
1650 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1651 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1652 | sd_journal *j; | |
1653 | char *p; | |
1654 | int r; | |
1655 | ||
1656 | assert_return(machine, -EINVAL); | |
1657 | assert_return(ret, -EINVAL); | |
1658 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1659 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1660 | |
63c372cb | 1661 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1662 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1663 | if (r == -ENOENT) | |
1664 | return -EHOSTDOWN; | |
1665 | if (r < 0) | |
1666 | return r; | |
1667 | if (!root) | |
1668 | return -ENODATA; | |
1669 | ||
1670 | if (!streq_ptr(class, "container")) | |
1671 | return -EIO; | |
1672 | ||
1673 | j = journal_new(flags, NULL); | |
1674 | if (!j) | |
1675 | return -ENOMEM; | |
1676 | ||
89739579 LP |
1677 | j->prefix = root; |
1678 | root = NULL; | |
1679 | ||
1680 | r = add_search_paths(j); | |
b6741478 LP |
1681 | if (r < 0) |
1682 | goto fail; | |
1683 | ||
1684 | *ret = j; | |
1685 | return 0; | |
1686 | ||
1687 | fail: | |
1688 | sd_journal_close(j); | |
1689 | return r; | |
1690 | } | |
1691 | ||
a963990f LP |
1692 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1693 | sd_journal *j; | |
1694 | int r; | |
87d2c1ff | 1695 | |
1ae464e0 TA |
1696 | assert_return(ret, -EINVAL); |
1697 | assert_return(path, -EINVAL); | |
1698 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1699 | |
7827b1a1 | 1700 | j = journal_new(flags, path); |
a963990f LP |
1701 | if (!j) |
1702 | return -ENOMEM; | |
3fbf9cbb | 1703 | |
89739579 | 1704 | r = add_root_directory(j, path); |
6fe391c5 | 1705 | if (r < 0) { |
3ac251b8 | 1706 | set_put_error(j, r); |
a963990f | 1707 | goto fail; |
6fe391c5 | 1708 | } |
87d2c1ff LP |
1709 | |
1710 | *ret = j; | |
1711 | return 0; | |
1712 | ||
1713 | fail: | |
1714 | sd_journal_close(j); | |
1715 | ||
1716 | return r; | |
a963990f | 1717 | } |
87d2c1ff | 1718 | |
5302ebe1 ZJS |
1719 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1720 | sd_journal *j; | |
1721 | const char **path; | |
1722 | int r; | |
1723 | ||
1ae464e0 TA |
1724 | assert_return(ret, -EINVAL); |
1725 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1726 | |
1727 | j = journal_new(flags, NULL); | |
1728 | if (!j) | |
1729 | return -ENOMEM; | |
1730 | ||
1731 | STRV_FOREACH(path, paths) { | |
1732 | r = add_any_file(j, *path); | |
1733 | if (r < 0) { | |
da927ba9 | 1734 | log_error_errno(r, "Failed to open %s: %m", *path); |
5302ebe1 ZJS |
1735 | goto fail; |
1736 | } | |
1737 | } | |
1738 | ||
1739 | j->no_new_files = true; | |
1740 | ||
1741 | *ret = j; | |
1742 | return 0; | |
1743 | ||
1744 | fail: | |
1745 | sd_journal_close(j); | |
1746 | ||
1747 | return r; | |
1748 | } | |
1749 | ||
a5344d2c | 1750 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1751 | Directory *d; |
1752 | JournalFile *f; | |
1753 | ||
a5344d2c LP |
1754 | if (!j) |
1755 | return; | |
87d2c1ff | 1756 | |
54b1da83 LP |
1757 | sd_journal_flush_matches(j); |
1758 | ||
c1f906bd | 1759 | while ((f = ordered_hashmap_steal_first(j->files))) |
a963990f | 1760 | journal_file_close(f); |
50f20cfd | 1761 | |
c1f906bd | 1762 | ordered_hashmap_free(j->files); |
260a2be4 | 1763 | |
a963990f LP |
1764 | while ((d = hashmap_first(j->directories_by_path))) |
1765 | remove_directory(j, d); | |
260a2be4 | 1766 | |
a963990f LP |
1767 | while ((d = hashmap_first(j->directories_by_wd))) |
1768 | remove_directory(j, d); | |
87d2c1ff | 1769 | |
a963990f LP |
1770 | hashmap_free(j->directories_by_path); |
1771 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1772 | |
03e334a1 | 1773 | safe_close(j->inotify_fd); |
50f20cfd | 1774 | |
bf807d4d LP |
1775 | if (j->mmap) { |
1776 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1777 | mmap_cache_unref(j->mmap); |
bf807d4d | 1778 | } |
16e9f408 | 1779 | |
7827b1a1 | 1780 | free(j->path); |
89739579 | 1781 | free(j->prefix); |
3c1668da | 1782 | free(j->unique_field); |
6fe391c5 | 1783 | set_free(j->errors); |
87d2c1ff LP |
1784 | free(j); |
1785 | } | |
3fbf9cbb | 1786 | |
a5344d2c | 1787 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1788 | Object *o; |
1789 | JournalFile *f; | |
1790 | int r; | |
1791 | ||
1ae464e0 TA |
1792 | assert_return(j, -EINVAL); |
1793 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1794 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1795 | |
1796 | f = j->current_file; | |
1797 | if (!f) | |
de190aef | 1798 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1799 | |
1800 | if (f->current_offset <= 0) | |
de190aef | 1801 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1802 | |
de190aef | 1803 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1804 | if (r < 0) |
1805 | return r; | |
1806 | ||
1807 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1808 | return 0; |
3fbf9cbb LP |
1809 | } |
1810 | ||
a5344d2c | 1811 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1812 | Object *o; |
1813 | JournalFile *f; | |
1814 | int r; | |
1815 | sd_id128_t id; | |
1816 | ||
1ae464e0 TA |
1817 | assert_return(j, -EINVAL); |
1818 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1819 | |
1820 | f = j->current_file; | |
1821 | if (!f) | |
de190aef | 1822 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1823 | |
1824 | if (f->current_offset <= 0) | |
de190aef | 1825 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1826 | |
de190aef | 1827 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1828 | if (r < 0) |
1829 | return r; | |
1830 | ||
de190aef LP |
1831 | if (ret_boot_id) |
1832 | *ret_boot_id = o->entry.boot_id; | |
1833 | else { | |
1834 | r = sd_id128_get_boot(&id); | |
1835 | if (r < 0) | |
1836 | return r; | |
3fbf9cbb | 1837 | |
de190aef | 1838 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1839 | return -ESTALE; |
de190aef | 1840 | } |
3fbf9cbb | 1841 | |
14a65d65 LP |
1842 | if (ret) |
1843 | *ret = le64toh(o->entry.monotonic); | |
1844 | ||
de190aef | 1845 | return 0; |
3fbf9cbb LP |
1846 | } |
1847 | ||
362a3f81 LP |
1848 | static bool field_is_valid(const char *field) { |
1849 | const char *p; | |
1850 | ||
1851 | assert(field); | |
1852 | ||
1853 | if (isempty(field)) | |
1854 | return false; | |
1855 | ||
1856 | if (startswith(field, "__")) | |
1857 | return false; | |
1858 | ||
1859 | for (p = field; *p; p++) { | |
1860 | ||
1861 | if (*p == '_') | |
1862 | continue; | |
1863 | ||
1864 | if (*p >= 'A' && *p <= 'Z') | |
1865 | continue; | |
1866 | ||
1867 | if (*p >= '0' && *p <= '9') | |
1868 | continue; | |
1869 | ||
1870 | return false; | |
1871 | } | |
1872 | ||
1873 | return true; | |
1874 | } | |
1875 | ||
a5344d2c | 1876 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1877 | JournalFile *f; |
1878 | uint64_t i, n; | |
1879 | size_t field_length; | |
1880 | int r; | |
1881 | Object *o; | |
1882 | ||
1ae464e0 TA |
1883 | assert_return(j, -EINVAL); |
1884 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1885 | assert_return(field, -EINVAL); | |
1886 | assert_return(data, -EINVAL); | |
1887 | assert_return(size, -EINVAL); | |
1888 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
1889 | |
1890 | f = j->current_file; | |
1891 | if (!f) | |
de190aef | 1892 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1893 | |
1894 | if (f->current_offset <= 0) | |
de190aef | 1895 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1896 | |
de190aef | 1897 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1898 | if (r < 0) |
1899 | return r; | |
1900 | ||
1901 | field_length = strlen(field); | |
1902 | ||
1903 | n = journal_file_entry_n_items(o); | |
1904 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1905 | uint64_t p, l; |
1906 | le64_t le_hash; | |
3fbf9cbb | 1907 | size_t t; |
1ec7120e | 1908 | int compression; |
3fbf9cbb LP |
1909 | |
1910 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1911 | le_hash = o->entry.items[i].hash; |
de190aef | 1912 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1913 | if (r < 0) |
1914 | return r; | |
1915 | ||
de190aef | 1916 | if (le_hash != o->data.hash) |
de7b95cd LP |
1917 | return -EBADMSG; |
1918 | ||
3fbf9cbb LP |
1919 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1920 | ||
1ec7120e | 1921 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
1922 | if (compression) { |
1923 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
1924 | if (decompress_startswith(compression, | |
1925 | o->data.payload, l, | |
1926 | &f->compress_buffer, &f->compress_buffer_size, | |
1927 | field, field_length, '=')) { | |
1928 | ||
fa1c4b51 | 1929 | size_t rsize; |
3b1a55e1 ZJS |
1930 | |
1931 | r = decompress_blob(compression, | |
1932 | o->data.payload, l, | |
1933 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
1934 | j->data_threshold); | |
1935 | if (r < 0) | |
1936 | return r; | |
807e17f0 | 1937 | |
3b1a55e1 ZJS |
1938 | *data = f->compress_buffer; |
1939 | *size = (size_t) rsize; | |
807e17f0 | 1940 | |
3b1a55e1 ZJS |
1941 | return 0; |
1942 | } | |
1943 | #else | |
1944 | return -EPROTONOSUPPORT; | |
1945 | #endif | |
807e17f0 LP |
1946 | } else if (l >= field_length+1 && |
1947 | memcmp(o->data.payload, field, field_length) == 0 && | |
1948 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1949 | |
161e54f8 | 1950 | t = (size_t) l; |
3fbf9cbb | 1951 | |
161e54f8 LP |
1952 | if ((uint64_t) t != l) |
1953 | return -E2BIG; | |
3fbf9cbb | 1954 | |
161e54f8 LP |
1955 | *data = o->data.payload; |
1956 | *size = t; | |
3fbf9cbb | 1957 | |
99613ec5 | 1958 | return 0; |
161e54f8 | 1959 | } |
3fbf9cbb | 1960 | |
de190aef | 1961 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1962 | if (r < 0) |
1963 | return r; | |
3fbf9cbb LP |
1964 | } |
1965 | ||
de190aef | 1966 | return -ENOENT; |
3fbf9cbb LP |
1967 | } |
1968 | ||
93b73b06 | 1969 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
1970 | size_t t; |
1971 | uint64_t l; | |
3b1a55e1 | 1972 | int compression; |
3c1668da LP |
1973 | |
1974 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
1975 | t = (size_t) l; | |
1976 | ||
1977 | /* We can't read objects larger than 4G on a 32bit machine */ | |
1978 | if ((uint64_t) t != l) | |
1979 | return -E2BIG; | |
1980 | ||
1ec7120e ZJS |
1981 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
1982 | if (compression) { | |
3b1a55e1 | 1983 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 1984 | size_t rsize; |
3b1a55e1 | 1985 | int r; |
3c1668da | 1986 | |
1ec7120e ZJS |
1987 | r = decompress_blob(compression, |
1988 | o->data.payload, l, &f->compress_buffer, | |
1989 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
1990 | if (r < 0) | |
1991 | return r; | |
3c1668da LP |
1992 | |
1993 | *data = f->compress_buffer; | |
1994 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
1995 | #else |
1996 | return -EPROTONOSUPPORT; | |
1997 | #endif | |
3c1668da LP |
1998 | } else { |
1999 | *data = o->data.payload; | |
2000 | *size = t; | |
2001 | } | |
2002 | ||
2003 | return 0; | |
2004 | } | |
2005 | ||
a5344d2c | 2006 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2007 | JournalFile *f; |
3c1668da | 2008 | uint64_t p, n; |
4fd052ae | 2009 | le64_t le_hash; |
3fbf9cbb LP |
2010 | int r; |
2011 | Object *o; | |
2012 | ||
1ae464e0 TA |
2013 | assert_return(j, -EINVAL); |
2014 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2015 | assert_return(data, -EINVAL); | |
2016 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2017 | |
2018 | f = j->current_file; | |
2019 | if (!f) | |
de190aef | 2020 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2021 | |
2022 | if (f->current_offset <= 0) | |
de190aef | 2023 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2024 | |
de190aef | 2025 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2026 | if (r < 0) |
2027 | return r; | |
2028 | ||
2029 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2030 | if (j->current_field >= n) |
3fbf9cbb LP |
2031 | return 0; |
2032 | ||
7210bfb3 | 2033 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2034 | le_hash = o->entry.items[j->current_field].hash; |
2035 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2036 | if (r < 0) |
2037 | return r; | |
2038 | ||
de190aef | 2039 | if (le_hash != o->data.hash) |
de7b95cd LP |
2040 | return -EBADMSG; |
2041 | ||
93b73b06 | 2042 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2043 | if (r < 0) |
2044 | return r; | |
3fbf9cbb | 2045 | |
7210bfb3 | 2046 | j->current_field ++; |
3fbf9cbb LP |
2047 | |
2048 | return 1; | |
2049 | } | |
c2373f84 | 2050 | |
a5344d2c LP |
2051 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2052 | if (!j) | |
2053 | return; | |
8725d60a LP |
2054 | |
2055 | j->current_field = 0; | |
c2373f84 | 2056 | } |
50f20cfd | 2057 | |
a5344d2c | 2058 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2059 | int r; |
2060 | ||
1ae464e0 TA |
2061 | assert_return(j, -EINVAL); |
2062 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2063 | |
a963990f LP |
2064 | if (j->inotify_fd >= 0) |
2065 | return j->inotify_fd; | |
2066 | ||
2067 | r = allocate_inotify(j); | |
2068 | if (r < 0) | |
2069 | return r; | |
2070 | ||
2071 | /* Iterate through all dirs again, to add them to the | |
2072 | * inotify */ | |
5302ebe1 ZJS |
2073 | if (j->no_new_files) |
2074 | r = add_current_paths(j); | |
2075 | else if (j->path) | |
89739579 | 2076 | r = add_root_directory(j, j->path); |
7827b1a1 | 2077 | else |
89739579 | 2078 | r = add_search_paths(j); |
a963990f LP |
2079 | if (r < 0) |
2080 | return r; | |
2081 | ||
50f20cfd LP |
2082 | return j->inotify_fd; |
2083 | } | |
2084 | ||
ee531d94 LP |
2085 | _public_ int sd_journal_get_events(sd_journal *j) { |
2086 | int fd; | |
2087 | ||
1ae464e0 TA |
2088 | assert_return(j, -EINVAL); |
2089 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2090 | |
2091 | fd = sd_journal_get_fd(j); | |
2092 | if (fd < 0) | |
2093 | return fd; | |
2094 | ||
2095 | return POLLIN; | |
2096 | } | |
2097 | ||
39c155ea LP |
2098 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2099 | int fd; | |
2100 | ||
1ae464e0 TA |
2101 | assert_return(j, -EINVAL); |
2102 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2103 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2104 | |
2105 | fd = sd_journal_get_fd(j); | |
2106 | if (fd < 0) | |
2107 | return fd; | |
2108 | ||
2109 | if (!j->on_network) { | |
2110 | *timeout_usec = (uint64_t) -1; | |
2111 | return 0; | |
2112 | } | |
2113 | ||
2114 | /* If we are on the network we need to regularly check for | |
2115 | * changes manually */ | |
2116 | ||
2117 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2118 | return 1; | |
2119 | } | |
2120 | ||
50f20cfd | 2121 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2122 | Directory *d; |
50f20cfd LP |
2123 | int r; |
2124 | ||
2125 | assert(j); | |
2126 | assert(e); | |
2127 | ||
2128 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2129 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2130 | if (d) { | |
2131 | sd_id128_t id; | |
50f20cfd | 2132 | |
de2c3907 LP |
2133 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2134 | (endswith(e->name, ".journal") || | |
2135 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2136 | |
2137 | /* Event for a journal file */ | |
2138 | ||
2139 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2140 | r = add_file(j, d->path, e->name); |
6fe391c5 | 2141 | if (r < 0) { |
c33b3297 MS |
2142 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
2143 | d->path, e->name); | |
3ac251b8 | 2144 | set_put_error(j, r); |
6fe391c5 | 2145 | } |
a963990f | 2146 | |
5e6870ea | 2147 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2148 | |
a963990f | 2149 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2150 | if (r < 0) |
da927ba9 | 2151 | log_debug_errno(r, "Failed to remove file %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2152 | } |
2153 | ||
a963990f | 2154 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2155 | |
a963990f | 2156 | /* Event for a subdirectory */ |
50f20cfd | 2157 | |
b2b46f91 TA |
2158 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2159 | remove_directory(j, d); | |
50f20cfd | 2160 | |
a963990f | 2161 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2162 | |
a963990f | 2163 | /* Event for root directory */ |
50f20cfd | 2164 | |
a963990f LP |
2165 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2166 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2167 | if (r < 0) |
da927ba9 | 2168 | log_debug_errno(r, "Failed to add directory %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2169 | } |
2170 | } | |
2171 | ||
2172 | return; | |
2173 | } | |
2174 | ||
2175 | if (e->mask & IN_IGNORED) | |
2176 | return; | |
2177 | ||
2178 | log_warning("Unknown inotify event."); | |
2179 | } | |
2180 | ||
a963990f LP |
2181 | static int determine_change(sd_journal *j) { |
2182 | bool b; | |
2183 | ||
2184 | assert(j); | |
2185 | ||
2186 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2187 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2188 | ||
2189 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2190 | } | |
2191 | ||
a5344d2c | 2192 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2193 | bool got_something = false; |
50f20cfd | 2194 | |
1ae464e0 TA |
2195 | assert_return(j, -EINVAL); |
2196 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2197 | |
39c155ea LP |
2198 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2199 | ||
50f20cfd | 2200 | for (;;) { |
0254e944 | 2201 | union inotify_event_buffer buffer; |
50f20cfd LP |
2202 | struct inotify_event *e; |
2203 | ssize_t l; | |
2204 | ||
0254e944 | 2205 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2206 | if (l < 0) { |
a963990f LP |
2207 | if (errno == EAGAIN || errno == EINTR) |
2208 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2209 | |
2210 | return -errno; | |
2211 | } | |
2212 | ||
a963990f LP |
2213 | got_something = true; |
2214 | ||
f7c1ad4f | 2215 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2216 | process_inotify_event(j, e); |
50f20cfd LP |
2217 | } |
2218 | } | |
6ad1d1c3 | 2219 | |
e02d1cf7 | 2220 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2221 | int r; |
39c155ea | 2222 | uint64_t t; |
e02d1cf7 | 2223 | |
1ae464e0 TA |
2224 | assert_return(j, -EINVAL); |
2225 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2226 | |
a963990f LP |
2227 | if (j->inotify_fd < 0) { |
2228 | ||
2229 | /* This is the first invocation, hence create the | |
2230 | * inotify watch */ | |
2231 | r = sd_journal_get_fd(j); | |
2232 | if (r < 0) | |
2233 | return r; | |
2234 | ||
2235 | /* The journal might have changed since the context | |
2236 | * object was created and we weren't watching before, | |
2237 | * hence don't wait for anything, and return | |
2238 | * immediately. */ | |
2239 | return determine_change(j); | |
2240 | } | |
2241 | ||
39c155ea LP |
2242 | r = sd_journal_get_timeout(j, &t); |
2243 | if (r < 0) | |
2244 | return r; | |
2245 | ||
2246 | if (t != (uint64_t) -1) { | |
2247 | usec_t n; | |
2248 | ||
2249 | n = now(CLOCK_MONOTONIC); | |
2250 | t = t > n ? t - n : 0; | |
85210bff | 2251 | |
39c155ea LP |
2252 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2253 | timeout_usec = t; | |
85210bff LP |
2254 | } |
2255 | ||
a963990f LP |
2256 | do { |
2257 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2258 | } while (r == -EINTR); | |
e02d1cf7 LP |
2259 | |
2260 | if (r < 0) | |
2261 | return r; | |
2262 | ||
a963990f | 2263 | return sd_journal_process(j); |
e02d1cf7 LP |
2264 | } |
2265 | ||
08984293 LP |
2266 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2267 | Iterator i; | |
2268 | JournalFile *f; | |
2269 | bool first = true; | |
581483bf | 2270 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2271 | int r; |
2272 | ||
1ae464e0 TA |
2273 | assert_return(j, -EINVAL); |
2274 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2275 | assert_return(from || to, -EINVAL); | |
2276 | assert_return(from != to, -EINVAL); | |
08984293 | 2277 | |
c1f906bd | 2278 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2279 | usec_t fr, t; |
2280 | ||
2281 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2282 | if (r == -ENOENT) |
2283 | continue; | |
08984293 LP |
2284 | if (r < 0) |
2285 | return r; | |
2286 | if (r == 0) | |
2287 | continue; | |
2288 | ||
2289 | if (first) { | |
581483bf LP |
2290 | fmin = fr; |
2291 | tmax = t; | |
08984293 LP |
2292 | first = false; |
2293 | } else { | |
581483bf LP |
2294 | fmin = MIN(fr, fmin); |
2295 | tmax = MAX(t, tmax); | |
08984293 LP |
2296 | } |
2297 | } | |
2298 | ||
581483bf LP |
2299 | if (from) |
2300 | *from = fmin; | |
2301 | if (to) | |
2302 | *to = tmax; | |
2303 | ||
08984293 LP |
2304 | return first ? 0 : 1; |
2305 | } | |
2306 | ||
2307 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2308 | Iterator i; | |
2309 | JournalFile *f; | |
1651e2c6 | 2310 | bool found = false; |
08984293 LP |
2311 | int r; |
2312 | ||
1ae464e0 TA |
2313 | assert_return(j, -EINVAL); |
2314 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2315 | assert_return(from || to, -EINVAL); | |
2316 | assert_return(from != to, -EINVAL); | |
08984293 | 2317 | |
c1f906bd | 2318 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2319 | usec_t fr, t; |
2320 | ||
2321 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2322 | if (r == -ENOENT) |
2323 | continue; | |
08984293 LP |
2324 | if (r < 0) |
2325 | return r; | |
2326 | if (r == 0) | |
2327 | continue; | |
2328 | ||
1651e2c6 | 2329 | if (found) { |
08984293 | 2330 | if (from) |
1651e2c6 | 2331 | *from = MIN(fr, *from); |
08984293 | 2332 | if (to) |
1651e2c6 | 2333 | *to = MAX(t, *to); |
08984293 LP |
2334 | } else { |
2335 | if (from) | |
1651e2c6 | 2336 | *from = fr; |
08984293 | 2337 | if (to) |
1651e2c6 ZJS |
2338 | *to = t; |
2339 | found = true; | |
08984293 LP |
2340 | } |
2341 | } | |
2342 | ||
1651e2c6 | 2343 | return found; |
08984293 LP |
2344 | } |
2345 | ||
dca6219e LP |
2346 | void journal_print_header(sd_journal *j) { |
2347 | Iterator i; | |
2348 | JournalFile *f; | |
2349 | bool newline = false; | |
2350 | ||
2351 | assert(j); | |
2352 | ||
c1f906bd | 2353 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2354 | if (newline) |
2355 | putchar('\n'); | |
2356 | else | |
2357 | newline = true; | |
2358 | ||
2359 | journal_file_print_header(f); | |
2360 | } | |
2361 | } | |
08984293 | 2362 | |
a1a03e30 LP |
2363 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2364 | Iterator i; | |
2365 | JournalFile *f; | |
2366 | uint64_t sum = 0; | |
2367 | ||
1ae464e0 TA |
2368 | assert_return(j, -EINVAL); |
2369 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2370 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2371 | |
c1f906bd | 2372 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2373 | struct stat st; |
2374 | ||
2375 | if (fstat(f->fd, &st) < 0) | |
2376 | return -errno; | |
2377 | ||
2378 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2379 | } | |
2380 | ||
2381 | *bytes = sum; | |
2382 | return 0; | |
2383 | } | |
2384 | ||
3c1668da LP |
2385 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2386 | char *f; | |
2387 | ||
1ae464e0 TA |
2388 | assert_return(j, -EINVAL); |
2389 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2390 | assert_return(!isempty(field), -EINVAL); | |
2391 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2392 | |
2393 | f = strdup(field); | |
2394 | if (!f) | |
2395 | return -ENOMEM; | |
2396 | ||
2397 | free(j->unique_field); | |
2398 | j->unique_field = f; | |
2399 | j->unique_file = NULL; | |
2400 | j->unique_offset = 0; | |
360af4cf | 2401 | j->unique_file_lost = false; |
3c1668da LP |
2402 | |
2403 | return 0; | |
2404 | } | |
2405 | ||
2406 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2407 | size_t k; |
19a2bd80 | 2408 | |
1ae464e0 TA |
2409 | assert_return(j, -EINVAL); |
2410 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2411 | assert_return(data, -EINVAL); | |
2412 | assert_return(l, -EINVAL); | |
2413 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2414 | |
3c1668da | 2415 | k = strlen(j->unique_field); |
19a2bd80 | 2416 | |
3c1668da | 2417 | if (!j->unique_file) { |
360af4cf ZJS |
2418 | if (j->unique_file_lost) |
2419 | return 0; | |
2420 | ||
c1f906bd | 2421 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2422 | if (!j->unique_file) |
2423 | return 0; | |
360af4cf | 2424 | |
3c1668da LP |
2425 | j->unique_offset = 0; |
2426 | } | |
19a2bd80 | 2427 | |
3c1668da LP |
2428 | for (;;) { |
2429 | JournalFile *of; | |
2430 | Iterator i; | |
ae97089d | 2431 | Object *o; |
3c1668da LP |
2432 | const void *odata; |
2433 | size_t ol; | |
2434 | bool found; | |
ae97089d | 2435 | int r; |
3c1668da | 2436 | |
bdc02927 | 2437 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2438 | if (j->unique_offset == 0) { |
2439 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2440 | if (r < 0) | |
2441 | return r; | |
2442 | ||
2443 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2444 | } else { | |
2445 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2446 | if (r < 0) | |
2447 | return r; | |
2448 | ||
2449 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2450 | } | |
2451 | ||
2452 | /* We reached the end of the list? Then start again, with the next file */ | |
2453 | if (j->unique_offset == 0) { | |
c1f906bd | 2454 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2455 | if (!j->unique_file) |
3c1668da LP |
2456 | return 0; |
2457 | ||
3c1668da LP |
2458 | continue; |
2459 | } | |
2460 | ||
d05089d8 MS |
2461 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2462 | * instead, so that we can look at this data object at the same | |
3c1668da | 2463 | * time as one on another file */ |
d05089d8 | 2464 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2465 | if (r < 0) |
2466 | return r; | |
2467 | ||
2468 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2469 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2470 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2471 | j->unique_file->path, j->unique_offset, |
2472 | o->object.type, OBJECT_DATA); | |
3c1668da | 2473 | return -EBADMSG; |
ae97089d ZJS |
2474 | } |
2475 | ||
93b73b06 | 2476 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2477 | if (r < 0) |
2478 | return r; | |
2479 | ||
0f99f74a ZJS |
2480 | /* Check if we have at least the field name and "=". */ |
2481 | if (ol <= k) { | |
2482 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2483 | j->unique_file->path, j->unique_offset, | |
2484 | ol, k + 1); | |
2485 | return -EBADMSG; | |
2486 | } | |
2487 | ||
2488 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2489 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2490 | j->unique_file->path, j->unique_offset, | |
2491 | j->unique_field); | |
2492 | return -EBADMSG; | |
2493 | } | |
2494 | ||
3c1668da LP |
2495 | /* OK, now let's see if we already returned this data |
2496 | * object by checking if it exists in the earlier | |
2497 | * traversed files. */ | |
2498 | found = false; | |
c1f906bd | 2499 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2500 | Object *oo; |
2501 | uint64_t op; | |
2502 | ||
2503 | if (of == j->unique_file) | |
2504 | break; | |
2505 | ||
2506 | /* Skip this file it didn't have any fields | |
2507 | * indexed */ | |
2508 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2509 | le64toh(of->header->n_fields) <= 0) | |
2510 | continue; | |
2511 | ||
2512 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2513 | if (r < 0) | |
2514 | return r; | |
2515 | ||
2516 | if (r > 0) | |
2517 | found = true; | |
2518 | } | |
2519 | ||
06cc69d4 JJ |
2520 | if (found) |
2521 | continue; | |
2522 | ||
93b73b06 | 2523 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2524 | if (r < 0) |
2525 | return r; | |
2526 | ||
2527 | return 1; | |
2528 | } | |
2529 | } | |
2530 | ||
115646c7 | 2531 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2532 | if (!j) |
2533 | return; | |
2534 | ||
2535 | j->unique_file = NULL; | |
2536 | j->unique_offset = 0; | |
360af4cf | 2537 | j->unique_file_lost = false; |
3c1668da | 2538 | } |
85210bff LP |
2539 | |
2540 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
1ae464e0 TA |
2541 | assert_return(j, -EINVAL); |
2542 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2543 | |
2544 | return !j->on_network; | |
2545 | } | |
d4205751 LP |
2546 | |
2547 | static char *lookup_field(const char *field, void *userdata) { | |
2548 | sd_journal *j = userdata; | |
2549 | const void *data; | |
2550 | size_t size, d; | |
2551 | int r; | |
2552 | ||
2553 | assert(field); | |
2554 | assert(j); | |
2555 | ||
2556 | r = sd_journal_get_data(j, field, &data, &size); | |
2557 | if (r < 0 || | |
2558 | size > REPLACE_VAR_MAX) | |
2559 | return strdup(field); | |
2560 | ||
2561 | d = strlen(field) + 1; | |
2562 | ||
2563 | return strndup((const char*) data + d, size - d); | |
2564 | } | |
2565 | ||
2566 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2567 | const void *data; | |
2568 | size_t size; | |
2569 | sd_id128_t id; | |
2570 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2571 | char *t; | |
2572 | int r; | |
2573 | ||
1ae464e0 TA |
2574 | assert_return(j, -EINVAL); |
2575 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2576 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2577 | |
2578 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2579 | if (r < 0) | |
2580 | return r; | |
2581 | ||
2582 | cid = strndup((const char*) data + 11, size - 11); | |
2583 | if (!cid) | |
2584 | return -ENOMEM; | |
2585 | ||
2586 | r = sd_id128_from_string(cid, &id); | |
2587 | if (r < 0) | |
2588 | return r; | |
2589 | ||
844ec79b | 2590 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2591 | if (r < 0) |
2592 | return r; | |
2593 | ||
2594 | t = replace_var(text, lookup_field, j); | |
2595 | if (!t) | |
2596 | return -ENOMEM; | |
2597 | ||
2598 | *ret = t; | |
2599 | return 0; | |
2600 | } | |
8f1e860f LP |
2601 | |
2602 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2603 | assert_return(ret, -EINVAL); |
8f1e860f | 2604 | |
844ec79b | 2605 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2606 | } |
93b73b06 LP |
2607 | |
2608 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2609 | assert_return(j, -EINVAL); |
2610 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2611 | |
2612 | j->data_threshold = sz; | |
2613 | return 0; | |
2614 | } | |
2615 | ||
2616 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2617 | assert_return(j, -EINVAL); |
2618 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2619 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2620 | |
2621 | *sz = j->data_threshold; | |
2622 | return 0; | |
2623 | } |