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Commit | Line | Data |
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87d2c1ff LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2011 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
87d2c1ff LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
87d2c1ff | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
87d2c1ff | 20 | #include <errno.h> |
87d2c1ff | 21 | #include <fcntl.h> |
82e24b00 | 22 | #include <inttypes.h> |
07630cea LP |
23 | #include <linux/magic.h> |
24 | #include <poll.h> | |
3fbf9cbb | 25 | #include <stddef.h> |
50f20cfd | 26 | #include <sys/inotify.h> |
85210bff | 27 | #include <sys/vfs.h> |
07630cea | 28 | #include <unistd.h> |
87d2c1ff LP |
29 | |
30 | #include "sd-journal.h" | |
c004493c | 31 | |
b5efdb8a | 32 | #include "alloc-util.h" |
07630cea LP |
33 | #include "catalog.h" |
34 | #include "compress.h" | |
a0956174 | 35 | #include "dirent-util.h" |
3ffd4af2 | 36 | #include "fd-util.h" |
07630cea LP |
37 | #include "fileio.h" |
38 | #include "formats-util.h" | |
77601719 | 39 | #include "fs-util.h" |
07630cea LP |
40 | #include "hashmap.h" |
41 | #include "hostname-util.h" | |
c004493c | 42 | #include "io-util.h" |
87d2c1ff | 43 | #include "journal-def.h" |
cec736d2 | 44 | #include "journal-file.h" |
07630cea | 45 | #include "journal-internal.h" |
cec736d2 | 46 | #include "list.h" |
de7b95cd | 47 | #include "lookup3.h" |
85210bff | 48 | #include "missing.h" |
07630cea | 49 | #include "path-util.h" |
d4205751 | 50 | #include "replace-var.h" |
15a5e950 LP |
51 | #include "stat-util.h" |
52 | #include "stdio-util.h" | |
07630cea LP |
53 | #include "string-util.h" |
54 | #include "strv.h" | |
87d2c1ff | 55 | |
9e8abdf0 LP |
56 | #define JOURNAL_FILES_MAX 7168 |
57 | ||
85210bff LP |
58 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
59 | ||
d4205751 LP |
60 | #define REPLACE_VAR_MAX 256 |
61 | ||
93b73b06 LP |
62 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
63 | ||
a9a245c1 ZJS |
64 | static void remove_file_real(sd_journal *j, JournalFile *f); |
65 | ||
a65f06bb ZJS |
66 | static bool journal_pid_changed(sd_journal *j) { |
67 | assert(j); | |
68 | ||
69 | /* We don't support people creating a journal object and | |
70 | * keeping it around over a fork(). Let's complain. */ | |
71 | ||
72 | return j->original_pid != getpid(); | |
73 | } | |
74 | ||
5768d259 LP |
75 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
76 | char *copy; | |
3ac251b8 LP |
77 | int k; |
78 | ||
5768d259 LP |
79 | /* Memorize an error we encountered, and store which |
80 | * file/directory it was generated from. Note that we store | |
81 | * only *one* path per error code, as the error code is the | |
82 | * key into the hashmap, and the path is the value. This means | |
83 | * we keep track only of all error kinds, but not of all error | |
84 | * locations. This has the benefit that the hashmap cannot | |
85 | * grow beyond bounds. | |
86 | * | |
87 | * We return an error here only if we didn't manage to | |
88 | * memorize the real error. */ | |
89 | ||
6fe391c5 ZJS |
90 | if (r >= 0) |
91 | return r; | |
92 | ||
5768d259 | 93 | k = hashmap_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
94 | if (k < 0) |
95 | return k; | |
96 | ||
5768d259 LP |
97 | if (path) { |
98 | copy = strdup(path); | |
99 | if (!copy) | |
100 | return -ENOMEM; | |
101 | } else | |
102 | copy = NULL; | |
103 | ||
104 | k = hashmap_put(j->errors, INT_TO_PTR(r), copy); | |
105 | if (k < 0) { | |
106 | free(copy); | |
107 | ||
108 | if (k == -EEXIST) | |
109 | return 0; | |
110 | ||
111 | return k; | |
112 | } | |
113 | ||
114 | return 0; | |
6fe391c5 ZJS |
115 | } |
116 | ||
de190aef | 117 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
118 | Iterator i; |
119 | JournalFile *f; | |
120 | ||
121 | assert(j); | |
122 | ||
123 | j->current_file = NULL; | |
124 | j->current_field = 0; | |
125 | ||
c1f906bd | 126 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 127 | journal_file_reset_location(f); |
8f9b6cd9 LP |
128 | } |
129 | ||
de190aef LP |
130 | static void reset_location(sd_journal *j) { |
131 | assert(j); | |
132 | ||
133 | detach_location(j); | |
134 | zero(j->current_location); | |
135 | } | |
136 | ||
a87247dd | 137 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 138 | assert(l); |
a87247dd | 139 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
140 | assert(f); |
141 | assert(o->object.type == OBJECT_ENTRY); | |
142 | ||
a87247dd | 143 | l->type = type; |
de190aef LP |
144 | l->seqnum = le64toh(o->entry.seqnum); |
145 | l->seqnum_id = f->header->seqnum_id; | |
146 | l->realtime = le64toh(o->entry.realtime); | |
147 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 148 | l->boot_id = o->entry.boot_id; |
de190aef LP |
149 | l->xor_hash = le64toh(o->entry.xor_hash); |
150 | ||
151 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
152 | } | |
153 | ||
1eb6332d | 154 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
155 | assert(j); |
156 | assert(f); | |
157 | assert(o); | |
158 | ||
1eb6332d | 159 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
160 | |
161 | j->current_file = f; | |
162 | j->current_field = 0; | |
163 | ||
6573ef05 MS |
164 | /* Let f know its candidate entry was picked. */ |
165 | assert(f->location_type == LOCATION_SEEK); | |
166 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
167 | } |
168 | ||
cbdca852 LP |
169 | static int match_is_valid(const void *data, size_t size) { |
170 | const char *b, *p; | |
171 | ||
172 | assert(data); | |
173 | ||
174 | if (size < 2) | |
175 | return false; | |
176 | ||
177 | if (startswith(data, "__")) | |
178 | return false; | |
179 | ||
180 | b = data; | |
181 | for (p = b; p < b + size; p++) { | |
182 | ||
183 | if (*p == '=') | |
184 | return p > b; | |
185 | ||
186 | if (*p == '_') | |
187 | continue; | |
188 | ||
189 | if (*p >= 'A' && *p <= 'Z') | |
190 | continue; | |
191 | ||
192 | if (*p >= '0' && *p <= '9') | |
193 | continue; | |
194 | ||
195 | return false; | |
196 | } | |
197 | ||
198 | return false; | |
199 | } | |
200 | ||
201 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
202 | const uint8_t *a = _a, *b = _b; |
203 | size_t j; | |
de190aef LP |
204 | |
205 | for (j = 0; j < s && j < t; j++) { | |
206 | ||
de190aef | 207 | if (a[j] != b[j]) |
cbdca852 | 208 | return false; |
de190aef | 209 | |
cbdca852 LP |
210 | if (a[j] == '=') |
211 | return true; | |
de190aef LP |
212 | } |
213 | ||
bc302926 | 214 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
215 | } |
216 | ||
217 | static Match *match_new(Match *p, MatchType t) { | |
218 | Match *m; | |
219 | ||
220 | m = new0(Match, 1); | |
221 | if (!m) | |
222 | return NULL; | |
223 | ||
224 | m->type = t; | |
225 | ||
226 | if (p) { | |
227 | m->parent = p; | |
71fda00f | 228 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
229 | } |
230 | ||
231 | return m; | |
232 | } | |
233 | ||
234 | static void match_free(Match *m) { | |
235 | assert(m); | |
236 | ||
237 | while (m->matches) | |
238 | match_free(m->matches); | |
239 | ||
240 | if (m->parent) | |
71fda00f | 241 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
242 | |
243 | free(m->data); | |
244 | free(m); | |
245 | } | |
246 | ||
247 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 248 | if (!m || m->matches) |
cbdca852 LP |
249 | return; |
250 | ||
251 | match_free(m); | |
de190aef LP |
252 | } |
253 | ||
a5344d2c | 254 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 255 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 256 | le64_t le_hash; |
87d2c1ff | 257 | |
1ae464e0 TA |
258 | assert_return(j, -EINVAL); |
259 | assert_return(!journal_pid_changed(j), -ECHILD); | |
260 | assert_return(data, -EINVAL); | |
cbdca852 LP |
261 | |
262 | if (size == 0) | |
263 | size = strlen(data); | |
264 | ||
1ae464e0 | 265 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 266 | |
cd34b3c6 HH |
267 | /* level 0: AND term |
268 | * level 1: OR terms | |
269 | * level 2: AND terms | |
270 | * level 3: OR terms | |
271 | * level 4: concrete matches */ | |
cbdca852 LP |
272 | |
273 | if (!j->level0) { | |
cd34b3c6 | 274 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
275 | if (!j->level0) |
276 | return -ENOMEM; | |
277 | } | |
278 | ||
279 | if (!j->level1) { | |
cd34b3c6 | 280 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
281 | if (!j->level1) |
282 | return -ENOMEM; | |
283 | } | |
284 | ||
cd34b3c6 HH |
285 | if (!j->level2) { |
286 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
287 | if (!j->level2) | |
288 | return -ENOMEM; | |
289 | } | |
290 | ||
291 | assert(j->level0->type == MATCH_AND_TERM); | |
292 | assert(j->level1->type == MATCH_OR_TERM); | |
293 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 294 | |
de190aef LP |
295 | le_hash = htole64(hash64(data, size)); |
296 | ||
cd34b3c6 HH |
297 | LIST_FOREACH(matches, l3, j->level2->matches) { |
298 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 299 | |
cd34b3c6 HH |
300 | LIST_FOREACH(matches, l4, l3->matches) { |
301 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 302 | |
cbdca852 LP |
303 | /* Exactly the same match already? Then ignore |
304 | * this addition */ | |
cd34b3c6 HH |
305 | if (l4->le_hash == le_hash && |
306 | l4->size == size && | |
307 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
308 | return 0; |
309 | ||
310 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
311 | if (same_field(data, size, l4->data, l4->size)) { |
312 | add_here = l3; | |
cbdca852 LP |
313 | break; |
314 | } | |
315 | } | |
316 | ||
317 | if (add_here) | |
318 | break; | |
de190aef LP |
319 | } |
320 | ||
cbdca852 | 321 | if (!add_here) { |
cd34b3c6 | 322 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
323 | if (!add_here) |
324 | goto fail; | |
325 | } | |
326 | ||
327 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 328 | if (!m) |
cbdca852 | 329 | goto fail; |
87d2c1ff | 330 | |
cbdca852 | 331 | m->le_hash = le_hash; |
1cc101f1 | 332 | m->size = size; |
cbdca852 LP |
333 | m->data = memdup(data, size); |
334 | if (!m->data) | |
335 | goto fail; | |
336 | ||
337 | detach_location(j); | |
338 | ||
339 | return 0; | |
340 | ||
341 | fail: | |
c5a10d9c ZJS |
342 | match_free_if_empty(add_here); |
343 | match_free_if_empty(j->level2); | |
344 | match_free_if_empty(j->level1); | |
345 | match_free_if_empty(j->level0); | |
cbdca852 LP |
346 | |
347 | return -ENOMEM; | |
348 | } | |
349 | ||
cd34b3c6 | 350 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
351 | assert_return(j, -EINVAL); |
352 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 353 | |
cbdca852 LP |
354 | if (!j->level0) |
355 | return 0; | |
356 | ||
357 | if (!j->level1) | |
358 | return 0; | |
359 | ||
360 | if (!j->level1->matches) | |
361 | return 0; | |
362 | ||
cd34b3c6 HH |
363 | j->level1 = NULL; |
364 | j->level2 = NULL; | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
370 | assert_return(j, -EINVAL); |
371 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
372 | |
373 | if (!j->level0) | |
374 | return 0; | |
375 | ||
376 | if (!j->level1) | |
377 | return 0; | |
378 | ||
379 | if (!j->level2) | |
380 | return 0; | |
381 | ||
382 | if (!j->level2->matches) | |
383 | return 0; | |
cbdca852 | 384 | |
cd34b3c6 | 385 | j->level2 = NULL; |
cbdca852 LP |
386 | return 0; |
387 | } | |
388 | ||
389 | static char *match_make_string(Match *m) { | |
390 | char *p, *r; | |
391 | Match *i; | |
392 | bool enclose = false; | |
393 | ||
394 | if (!m) | |
4ad16808 | 395 | return strdup("none"); |
cbdca852 LP |
396 | |
397 | if (m->type == MATCH_DISCRETE) | |
398 | return strndup(m->data, m->size); | |
399 | ||
400 | p = NULL; | |
401 | LIST_FOREACH(matches, i, m->matches) { | |
402 | char *t, *k; | |
403 | ||
404 | t = match_make_string(i); | |
405 | if (!t) { | |
406 | free(p); | |
407 | return NULL; | |
408 | } | |
409 | ||
410 | if (p) { | |
b7def684 | 411 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
412 | free(p); |
413 | free(t); | |
414 | ||
415 | if (!k) | |
416 | return NULL; | |
417 | ||
418 | p = k; | |
419 | ||
420 | enclose = true; | |
bc302926 | 421 | } else |
cbdca852 | 422 | p = t; |
87d2c1ff LP |
423 | } |
424 | ||
cbdca852 | 425 | if (enclose) { |
b7def684 | 426 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
427 | free(p); |
428 | return r; | |
429 | } | |
87d2c1ff | 430 | |
cbdca852 LP |
431 | return p; |
432 | } | |
de7b95cd | 433 | |
cbdca852 LP |
434 | char *journal_make_match_string(sd_journal *j) { |
435 | assert(j); | |
8f9b6cd9 | 436 | |
cbdca852 | 437 | return match_make_string(j->level0); |
87d2c1ff LP |
438 | } |
439 | ||
a5344d2c LP |
440 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
441 | if (!j) | |
442 | return; | |
87d2c1ff | 443 | |
cbdca852 LP |
444 | if (j->level0) |
445 | match_free(j->level0); | |
de7b95cd | 446 | |
cd34b3c6 | 447 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 448 | |
de190aef | 449 | detach_location(j); |
87d2c1ff LP |
450 | } |
451 | ||
487d3720 MS |
452 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
453 | assert(f); | |
de190aef | 454 | assert(l); |
487d3720 | 455 | assert(f->location_type == LOCATION_SEEK); |
a87247dd | 456 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
457 | |
458 | if (l->monotonic_set && | |
487d3720 | 459 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 460 | l->realtime_set && |
487d3720 | 461 | f->current_realtime == l->realtime && |
de190aef | 462 | l->xor_hash_set && |
487d3720 | 463 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
464 | return 0; |
465 | ||
466 | if (l->seqnum_set && | |
487d3720 | 467 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 468 | |
487d3720 | 469 | if (f->current_seqnum < l->seqnum) |
de190aef | 470 | return -1; |
487d3720 | 471 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
472 | return 1; |
473 | } | |
474 | ||
475 | if (l->monotonic_set && | |
487d3720 | 476 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 477 | |
487d3720 | 478 | if (f->current_monotonic < l->monotonic) |
de190aef | 479 | return -1; |
487d3720 | 480 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
481 | return 1; |
482 | } | |
483 | ||
484 | if (l->realtime_set) { | |
485 | ||
487d3720 | 486 | if (f->current_realtime < l->realtime) |
de190aef | 487 | return -1; |
487d3720 | 488 | if (f->current_realtime > l->realtime) |
de190aef LP |
489 | return 1; |
490 | } | |
491 | ||
492 | if (l->xor_hash_set) { | |
de190aef | 493 | |
487d3720 | 494 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 495 | return -1; |
487d3720 | 496 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
497 | return 1; |
498 | } | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
cbdca852 LP |
503 | static int next_for_match( |
504 | sd_journal *j, | |
505 | Match *m, | |
506 | JournalFile *f, | |
507 | uint64_t after_offset, | |
508 | direction_t direction, | |
509 | Object **ret, | |
510 | uint64_t *offset) { | |
511 | ||
de7b95cd | 512 | int r; |
cbdca852 LP |
513 | uint64_t np = 0; |
514 | Object *n; | |
de7b95cd LP |
515 | |
516 | assert(j); | |
cbdca852 LP |
517 | assert(m); |
518 | assert(f); | |
de7b95cd | 519 | |
cbdca852 LP |
520 | if (m->type == MATCH_DISCRETE) { |
521 | uint64_t dp; | |
de190aef | 522 | |
cbdca852 | 523 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
524 | if (r <= 0) |
525 | return r; | |
526 | ||
cbdca852 | 527 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 528 | |
cbdca852 LP |
529 | } else if (m->type == MATCH_OR_TERM) { |
530 | Match *i; | |
de7b95cd | 531 | |
cbdca852 | 532 | /* Find the earliest match beyond after_offset */ |
de190aef | 533 | |
cbdca852 LP |
534 | LIST_FOREACH(matches, i, m->matches) { |
535 | uint64_t cp; | |
de190aef | 536 | |
cbdca852 | 537 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
538 | if (r < 0) |
539 | return r; | |
cbdca852 | 540 | else if (r > 0) { |
bc302926 | 541 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
542 | np = cp; |
543 | } | |
544 | } | |
b4e5f920 | 545 | |
bc302926 ZJS |
546 | if (np == 0) |
547 | return 0; | |
548 | ||
cbdca852 | 549 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 550 | Match *i, *last_moved; |
de190aef | 551 | |
cbdca852 | 552 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 553 | * this until we find an offset that matches for all |
cbdca852 | 554 | * matches. */ |
de190aef | 555 | |
cbdca852 LP |
556 | if (!m->matches) |
557 | return 0; | |
de7b95cd | 558 | |
2bc8ca0c ZJS |
559 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
560 | if (r <= 0) | |
561 | return r; | |
de190aef | 562 | |
2bc8ca0c ZJS |
563 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
564 | last_moved = m->matches; | |
de190aef | 565 | |
2bc8ca0c ZJS |
566 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
567 | uint64_t cp; | |
de190aef | 568 | |
2bc8ca0c ZJS |
569 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
570 | if (r <= 0) | |
571 | return r; | |
de190aef | 572 | |
2bc8ca0c ZJS |
573 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
574 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
575 | np = cp; | |
576 | last_moved = i; | |
de190aef | 577 | } |
2bc8ca0c | 578 | } |
cbdca852 | 579 | } |
de190aef | 580 | |
bc302926 | 581 | assert(np > 0); |
de190aef | 582 | |
cbdca852 LP |
583 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
584 | if (r < 0) | |
585 | return r; | |
de7b95cd | 586 | |
de190aef | 587 | if (ret) |
cbdca852 | 588 | *ret = n; |
de190aef | 589 | if (offset) |
cbdca852 | 590 | *offset = np; |
de190aef LP |
591 | |
592 | return 1; | |
593 | } | |
594 | ||
cbdca852 LP |
595 | static int find_location_for_match( |
596 | sd_journal *j, | |
597 | Match *m, | |
598 | JournalFile *f, | |
599 | direction_t direction, | |
600 | Object **ret, | |
601 | uint64_t *offset) { | |
602 | ||
de190aef | 603 | int r; |
de190aef LP |
604 | |
605 | assert(j); | |
cbdca852 | 606 | assert(m); |
de190aef | 607 | assert(f); |
de190aef | 608 | |
cbdca852 LP |
609 | if (m->type == MATCH_DISCRETE) { |
610 | uint64_t dp; | |
de190aef | 611 | |
cbdca852 | 612 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
613 | if (r <= 0) |
614 | return r; | |
615 | ||
cbdca852 | 616 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 617 | |
cbdca852 LP |
618 | if (j->current_location.type == LOCATION_HEAD) |
619 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
620 | if (j->current_location.type == LOCATION_TAIL) | |
621 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
622 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
623 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
624 | if (j->current_location.monotonic_set) { | |
625 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
626 | if (r != -ENOENT) | |
627 | return r; | |
628 | } | |
629 | if (j->current_location.realtime_set) | |
630 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 631 | |
cbdca852 | 632 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 633 | |
cbdca852 LP |
634 | } else if (m->type == MATCH_OR_TERM) { |
635 | uint64_t np = 0; | |
636 | Object *n; | |
637 | Match *i; | |
de7b95cd | 638 | |
cbdca852 | 639 | /* Find the earliest match */ |
de7b95cd | 640 | |
cbdca852 LP |
641 | LIST_FOREACH(matches, i, m->matches) { |
642 | uint64_t cp; | |
643 | ||
644 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
645 | if (r < 0) | |
646 | return r; | |
647 | else if (r > 0) { | |
648 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
649 | np = cp; | |
de190aef | 650 | } |
cbdca852 | 651 | } |
de190aef | 652 | |
cbdca852 LP |
653 | if (np == 0) |
654 | return 0; | |
de7b95cd | 655 | |
cbdca852 LP |
656 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
657 | if (r < 0) | |
658 | return r; | |
de7b95cd | 659 | |
cbdca852 LP |
660 | if (ret) |
661 | *ret = n; | |
662 | if (offset) | |
663 | *offset = np; | |
de190aef | 664 | |
cbdca852 | 665 | return 1; |
e892bd17 | 666 | |
cbdca852 LP |
667 | } else { |
668 | Match *i; | |
669 | uint64_t np = 0; | |
670 | ||
671 | assert(m->type == MATCH_AND_TERM); | |
672 | ||
673 | /* First jump to the last match, and then find the | |
674 | * next one where all matches match */ | |
675 | ||
676 | if (!m->matches) | |
677 | return 0; | |
678 | ||
679 | LIST_FOREACH(matches, i, m->matches) { | |
680 | uint64_t cp; | |
681 | ||
682 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
683 | if (r <= 0) | |
4b067dc9 LP |
684 | return r; |
685 | ||
bc302926 | 686 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 687 | np = cp; |
de7b95cd LP |
688 | } |
689 | ||
cbdca852 LP |
690 | return next_for_match(j, m, f, np, direction, ret, offset); |
691 | } | |
692 | } | |
de190aef | 693 | |
cbdca852 LP |
694 | static int find_location_with_matches( |
695 | sd_journal *j, | |
696 | JournalFile *f, | |
697 | direction_t direction, | |
698 | Object **ret, | |
699 | uint64_t *offset) { | |
700 | ||
701 | int r; | |
702 | ||
703 | assert(j); | |
704 | assert(f); | |
705 | assert(ret); | |
706 | assert(offset); | |
707 | ||
708 | if (!j->level0) { | |
709 | /* No matches is simple */ | |
710 | ||
711 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 712 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 713 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 714 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
715 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
716 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
717 | if (j->current_location.monotonic_set) { | |
718 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
719 | if (r != -ENOENT) | |
720 | return r; | |
de7b95cd | 721 | } |
cbdca852 LP |
722 | if (j->current_location.realtime_set) |
723 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 724 | |
f534928a | 725 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
726 | } else |
727 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
728 | } | |
de7b95cd | 729 | |
cbdca852 LP |
730 | static int next_with_matches( |
731 | sd_journal *j, | |
732 | JournalFile *f, | |
733 | direction_t direction, | |
734 | Object **ret, | |
735 | uint64_t *offset) { | |
736 | ||
cbdca852 LP |
737 | assert(j); |
738 | assert(f); | |
739 | assert(ret); | |
740 | assert(offset); | |
741 | ||
cbdca852 LP |
742 | /* No matches is easy. We simple advance the file |
743 | * pointer by one. */ | |
744 | if (!j->level0) | |
b29ddfcb | 745 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
746 | |
747 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 748 | * with an offset at least one step larger */ |
b29ddfcb MS |
749 | return next_for_match(j, j->level0, f, |
750 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
751 | : f->current_offset - 1, | |
752 | direction, ret, offset); | |
de7b95cd LP |
753 | } |
754 | ||
58439db4 | 755 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 756 | Object *c; |
6e693b42 | 757 | uint64_t cp, n_entries; |
cbdca852 | 758 | int r; |
de190aef LP |
759 | |
760 | assert(j); | |
761 | assert(f); | |
762 | ||
950c07d4 MS |
763 | n_entries = le64toh(f->header->n_entries); |
764 | ||
765 | /* If we hit EOF before, we don't need to look into this file again | |
766 | * unless direction changed or new entries appeared. */ | |
767 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
768 | n_entries == f->last_n_entries) | |
769 | return 0; | |
668c965a | 770 | |
950c07d4 MS |
771 | f->last_n_entries = n_entries; |
772 | ||
773 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
774 | /* LOCATION_SEEK here means we did the work in a previous |
775 | * iteration and the current location already points to a | |
776 | * candidate entry. */ | |
487d3720 MS |
777 | if (f->location_type != LOCATION_SEEK) { |
778 | r = next_with_matches(j, f, direction, &c, &cp); | |
779 | if (r <= 0) | |
780 | return r; | |
466ccd92 | 781 | |
950c07d4 | 782 | journal_file_save_location(f, c, cp); |
487d3720 | 783 | } |
de190aef | 784 | } else { |
950c07d4 MS |
785 | f->last_direction = direction; |
786 | ||
cbdca852 | 787 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
788 | if (r <= 0) |
789 | return r; | |
487d3720 | 790 | |
950c07d4 | 791 | journal_file_save_location(f, c, cp); |
de190aef LP |
792 | } |
793 | ||
bc302926 | 794 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
795 | * that is actually different from what we were previously |
796 | * looking at. This is necessary to handle entries which exist | |
797 | * in two (or more) journal files, and which shall all be | |
798 | * suppressed but one. */ | |
799 | ||
de190aef LP |
800 | for (;;) { |
801 | bool found; | |
802 | ||
803 | if (j->current_location.type == LOCATION_DISCRETE) { | |
804 | int k; | |
805 | ||
487d3720 | 806 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
807 | |
808 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
809 | } else |
810 | found = true; | |
811 | ||
487d3720 | 812 | if (found) |
de190aef | 813 | return 1; |
de190aef LP |
814 | |
815 | r = next_with_matches(j, f, direction, &c, &cp); | |
816 | if (r <= 0) | |
817 | return r; | |
487d3720 | 818 | |
950c07d4 | 819 | journal_file_save_location(f, c, cp); |
de190aef LP |
820 | } |
821 | } | |
822 | ||
e892bd17 | 823 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de | 824 | JournalFile *f, *new_file = NULL; |
cec736d2 | 825 | Iterator i; |
a002d44b | 826 | Object *o; |
87d2c1ff LP |
827 | int r; |
828 | ||
1ae464e0 TA |
829 | assert_return(j, -EINVAL); |
830 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 831 | |
c1f906bd | 832 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 833 | bool found; |
87d2c1ff | 834 | |
58439db4 | 835 | r = next_beyond_location(j, f, direction); |
e590af26 | 836 | if (r < 0) { |
da927ba9 | 837 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 838 | remove_file_real(j, f); |
e590af26 | 839 | continue; |
6573ef05 MS |
840 | } else if (r == 0) { |
841 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 842 | continue; |
6573ef05 | 843 | } |
87d2c1ff | 844 | |
468b21de | 845 | if (!new_file) |
de190aef LP |
846 | found = true; |
847 | else { | |
848 | int k; | |
849 | ||
d8ae66d7 | 850 | k = journal_file_compare_locations(f, new_file); |
de190aef | 851 | |
bc302926 | 852 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
853 | } |
854 | ||
e499c999 | 855 | if (found) |
468b21de | 856 | new_file = f; |
87d2c1ff LP |
857 | } |
858 | ||
468b21de | 859 | if (!new_file) |
de190aef | 860 | return 0; |
ae2cc8ef | 861 | |
e499c999 | 862 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
863 | if (r < 0) |
864 | return r; | |
865 | ||
1eb6332d | 866 | set_location(j, new_file, o); |
ae2cc8ef | 867 | |
de190aef LP |
868 | return 1; |
869 | } | |
ae2cc8ef | 870 | |
a5344d2c | 871 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
872 | return real_journal_next(j, DIRECTION_DOWN); |
873 | } | |
ae2cc8ef | 874 | |
a5344d2c | 875 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
876 | return real_journal_next(j, DIRECTION_UP); |
877 | } | |
ae2cc8ef | 878 | |
6f003b43 | 879 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 880 | int c = 0, r; |
ae2cc8ef | 881 | |
1ae464e0 TA |
882 | assert_return(j, -EINVAL); |
883 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 884 | |
6f003b43 LP |
885 | if (skip == 0) { |
886 | /* If this is not a discrete skip, then at least | |
887 | * resolve the current location */ | |
888 | if (j->current_location.type != LOCATION_DISCRETE) | |
889 | return real_journal_next(j, direction); | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
894 | do { | |
895 | r = real_journal_next(j, direction); | |
de190aef LP |
896 | if (r < 0) |
897 | return r; | |
898 | ||
899 | if (r == 0) | |
900 | return c; | |
901 | ||
902 | skip--; | |
903 | c++; | |
6f003b43 | 904 | } while (skip > 0); |
87d2c1ff | 905 | |
de190aef | 906 | return c; |
87d2c1ff LP |
907 | } |
908 | ||
6f003b43 LP |
909 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
910 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
911 | } | |
de190aef | 912 | |
6f003b43 LP |
913 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
914 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
915 | } |
916 | ||
a5344d2c | 917 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 918 | Object *o; |
87d2c1ff | 919 | int r; |
3fbf9cbb | 920 | char bid[33], sid[33]; |
87d2c1ff | 921 | |
1ae464e0 TA |
922 | assert_return(j, -EINVAL); |
923 | assert_return(!journal_pid_changed(j), -ECHILD); | |
924 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 925 | |
3fbf9cbb LP |
926 | if (!j->current_file || j->current_file->current_offset <= 0) |
927 | return -EADDRNOTAVAIL; | |
87d2c1ff | 928 | |
de190aef | 929 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
930 | if (r < 0) |
931 | return r; | |
932 | ||
3fbf9cbb LP |
933 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
934 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 935 | |
3fbf9cbb | 936 | if (asprintf(cursor, |
507f22bd ZJS |
937 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
938 | sid, le64toh(o->entry.seqnum), | |
939 | bid, le64toh(o->entry.monotonic), | |
940 | le64toh(o->entry.realtime), | |
941 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 942 | return -ENOMEM; |
87d2c1ff | 943 | |
6f47ad30 | 944 | return 0; |
87d2c1ff LP |
945 | } |
946 | ||
a5344d2c | 947 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 948 | const char *word, *state; |
de190aef | 949 | size_t l; |
de190aef LP |
950 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
951 | bool | |
952 | seqnum_id_set = false, | |
953 | seqnum_set = false, | |
954 | boot_id_set = false, | |
955 | monotonic_set = false, | |
956 | realtime_set = false, | |
957 | xor_hash_set = false; | |
958 | sd_id128_t seqnum_id, boot_id; | |
959 | ||
1ae464e0 TA |
960 | assert_return(j, -EINVAL); |
961 | assert_return(!journal_pid_changed(j), -ECHILD); | |
962 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 963 | |
a2a5291b | 964 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
965 | char *item; |
966 | int k = 0; | |
967 | ||
a2a5291b | 968 | if (l < 2 || word[1] != '=') |
de190aef LP |
969 | return -EINVAL; |
970 | ||
a2a5291b | 971 | item = strndup(word, l); |
de190aef LP |
972 | if (!item) |
973 | return -ENOMEM; | |
974 | ||
a2a5291b | 975 | switch (word[0]) { |
de190aef LP |
976 | |
977 | case 's': | |
978 | seqnum_id_set = true; | |
be3ea5ea | 979 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
980 | break; |
981 | ||
982 | case 'i': | |
983 | seqnum_set = true; | |
be3ea5ea | 984 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
985 | k = -EINVAL; |
986 | break; | |
987 | ||
988 | case 'b': | |
989 | boot_id_set = true; | |
be3ea5ea | 990 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
991 | break; |
992 | ||
993 | case 'm': | |
994 | monotonic_set = true; | |
be3ea5ea | 995 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
996 | k = -EINVAL; |
997 | break; | |
998 | ||
999 | case 't': | |
1000 | realtime_set = true; | |
be3ea5ea | 1001 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1002 | k = -EINVAL; |
1003 | break; | |
1004 | ||
1005 | case 'x': | |
1006 | xor_hash_set = true; | |
be3ea5ea | 1007 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1008 | k = -EINVAL; |
1009 | break; | |
1010 | } | |
1011 | ||
1012 | free(item); | |
1013 | ||
1014 | if (k < 0) | |
1015 | return k; | |
1016 | } | |
1017 | ||
1018 | if ((!seqnum_set || !seqnum_id_set) && | |
1019 | (!monotonic_set || !boot_id_set) && | |
1020 | !realtime_set) | |
1021 | return -EINVAL; | |
1022 | ||
1023 | reset_location(j); | |
1024 | ||
a87247dd | 1025 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1026 | |
1027 | if (realtime_set) { | |
1028 | j->current_location.realtime = (uint64_t) realtime; | |
1029 | j->current_location.realtime_set = true; | |
1030 | } | |
1031 | ||
1032 | if (seqnum_set && seqnum_id_set) { | |
1033 | j->current_location.seqnum = (uint64_t) seqnum; | |
1034 | j->current_location.seqnum_id = seqnum_id; | |
1035 | j->current_location.seqnum_set = true; | |
1036 | } | |
1037 | ||
1038 | if (monotonic_set && boot_id_set) { | |
1039 | j->current_location.monotonic = (uint64_t) monotonic; | |
1040 | j->current_location.boot_id = boot_id; | |
1041 | j->current_location.monotonic_set = true; | |
1042 | } | |
1043 | ||
1044 | if (xor_hash_set) { | |
1045 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1046 | j->current_location.xor_hash_set = true; | |
1047 | } | |
1048 | ||
1049 | return 0; | |
1050 | } | |
1051 | ||
c6511e85 LP |
1052 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1053 | int r; | |
c6511e85 LP |
1054 | Object *o; |
1055 | ||
1ae464e0 TA |
1056 | assert_return(j, -EINVAL); |
1057 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1058 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1059 | |
1060 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1061 | return -EADDRNOTAVAIL; | |
1062 | ||
1063 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1064 | if (r < 0) | |
1065 | return r; | |
1066 | ||
9ed794a3 | 1067 | for (;;) { |
c6511e85 | 1068 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1069 | unsigned long long ll; |
7294bb5b | 1070 | sd_id128_t id; |
c6511e85 LP |
1071 | int k = 0; |
1072 | ||
7294bb5b SS |
1073 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1074 | if (r < 0) | |
1075 | return r; | |
c6511e85 | 1076 | |
7294bb5b SS |
1077 | if (r == 0) |
1078 | break; | |
c6511e85 | 1079 | |
7294bb5b SS |
1080 | if (strlen(item) < 2 || item[1] != '=') |
1081 | return -EINVAL; | |
1082 | ||
1083 | switch (item[0]) { | |
c6511e85 LP |
1084 | |
1085 | case 's': | |
1086 | k = sd_id128_from_string(item+2, &id); | |
1087 | if (k < 0) | |
1088 | return k; | |
1089 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1090 | return 0; | |
1091 | break; | |
1092 | ||
1093 | case 'i': | |
1094 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1095 | return -EINVAL; | |
1096 | if (ll != le64toh(o->entry.seqnum)) | |
1097 | return 0; | |
1098 | break; | |
1099 | ||
1100 | case 'b': | |
1101 | k = sd_id128_from_string(item+2, &id); | |
1102 | if (k < 0) | |
1103 | return k; | |
1104 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1105 | return 0; | |
1106 | break; | |
1107 | ||
1108 | case 'm': | |
1109 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1110 | return -EINVAL; | |
1111 | if (ll != le64toh(o->entry.monotonic)) | |
1112 | return 0; | |
1113 | break; | |
1114 | ||
1115 | case 't': | |
1116 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1117 | return -EINVAL; | |
1118 | if (ll != le64toh(o->entry.realtime)) | |
1119 | return 0; | |
1120 | break; | |
1121 | ||
1122 | case 'x': | |
1123 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1124 | return -EINVAL; | |
1125 | if (ll != le64toh(o->entry.xor_hash)) | |
1126 | return 0; | |
1127 | break; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | return 1; | |
1132 | } | |
1133 | ||
1134 | ||
a5344d2c | 1135 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1136 | assert_return(j, -EINVAL); |
1137 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1138 | |
1139 | reset_location(j); | |
a87247dd | 1140 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1141 | j->current_location.boot_id = boot_id; |
1142 | j->current_location.monotonic = usec; | |
1143 | j->current_location.monotonic_set = true; | |
1144 | ||
1145 | return 0; | |
1146 | } | |
1147 | ||
a5344d2c | 1148 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1149 | assert_return(j, -EINVAL); |
1150 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1151 | |
1152 | reset_location(j); | |
a87247dd | 1153 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1154 | j->current_location.realtime = usec; |
1155 | j->current_location.realtime_set = true; | |
1156 | ||
1157 | return 0; | |
1158 | } | |
1159 | ||
a5344d2c | 1160 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1161 | assert_return(j, -EINVAL); |
1162 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1163 | |
1164 | reset_location(j); | |
1165 | j->current_location.type = LOCATION_HEAD; | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
a5344d2c | 1170 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1171 | assert_return(j, -EINVAL); |
1172 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1173 | |
1174 | reset_location(j); | |
1175 | j->current_location.type = LOCATION_TAIL; | |
1176 | ||
1177 | return 0; | |
87d2c1ff LP |
1178 | } |
1179 | ||
85210bff LP |
1180 | static void check_network(sd_journal *j, int fd) { |
1181 | struct statfs sfs; | |
1182 | ||
1183 | assert(j); | |
1184 | ||
1185 | if (j->on_network) | |
1186 | return; | |
1187 | ||
1188 | if (fstatfs(fd, &sfs) < 0) | |
1189 | return; | |
1190 | ||
1191 | j->on_network = | |
c51cf056 ZJS |
1192 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1193 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1194 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1195 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1196 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1197 | } |
1198 | ||
a688baa8 ZJS |
1199 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1200 | const char *full, *tilded, *atted; | |
1201 | ||
63c372cb LP |
1202 | full = strjoina(prefix, ".journal"); |
1203 | tilded = strjoina(full, "~"); | |
1204 | atted = strjoina(prefix, "@"); | |
a688baa8 ZJS |
1205 | |
1206 | return streq(filename, full) || | |
1207 | streq(filename, tilded) || | |
1208 | startswith(filename, atted); | |
1209 | } | |
1210 | ||
1211 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1212 | assert(filename); |
1213 | ||
a688baa8 ZJS |
1214 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) |
1215 | return false; | |
1216 | ||
1217 | /* no flags set → every type is OK */ | |
1218 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1219 | return true; | |
1220 | ||
1221 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1222 | return true; | |
1223 | ||
1224 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1225 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1226 | ||
5ffa8c81 | 1227 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1228 | |
1229 | if (file_has_type_prefix(prefix, filename)) | |
1230 | return true; | |
1231 | } | |
1232 | ||
1233 | return false; | |
1234 | } | |
1235 | ||
5d1ce257 LP |
1236 | static bool path_has_prefix(sd_journal *j, const char *path, const char *prefix) { |
1237 | assert(j); | |
1238 | assert(path); | |
1239 | assert(prefix); | |
1240 | ||
1241 | if (j->toplevel_fd >= 0) | |
1242 | return false; | |
1243 | ||
1244 | return path_startswith(path, prefix); | |
1245 | } | |
1246 | ||
1247 | static const char *skip_slash(const char *p) { | |
1248 | ||
1249 | if (!p) | |
1250 | return NULL; | |
1251 | ||
1252 | while (*p == '/') | |
1253 | p++; | |
1254 | ||
1255 | return p; | |
1256 | } | |
1257 | ||
1258 | static int add_any_file(sd_journal *j, int fd, const char *path) { | |
39883f62 | 1259 | JournalFile *f = NULL; |
5d1ce257 | 1260 | bool close_fd = false; |
d617408e | 1261 | int r, k; |
3fbf9cbb LP |
1262 | |
1263 | assert(j); | |
5d1ce257 | 1264 | assert(fd >= 0 || path); |
3fbf9cbb | 1265 | |
5d1ce257 | 1266 | if (path && ordered_hashmap_get(j->files, path)) |
50f20cfd | 1267 | return 0; |
50f20cfd | 1268 | |
9e8abdf0 | 1269 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
d617408e LP |
1270 | log_debug("Too many open journal files, not adding %s.", path); |
1271 | r = -ETOOMANYREFS; | |
1272 | goto fail; | |
9e8abdf0 LP |
1273 | } |
1274 | ||
5d1ce257 LP |
1275 | if (fd < 0 && j->toplevel_fd >= 0) { |
1276 | ||
1277 | /* If there's a top-level fd defined, open the file relative to this now. (Make the path relative, | |
1278 | * explicitly, since otherwise openat() ignores the first argument.) */ | |
1279 | ||
1280 | fd = openat(j->toplevel_fd, skip_slash(path), O_RDONLY|O_CLOEXEC); | |
1281 | if (fd < 0) { | |
1282 | r = log_debug_errno(errno, "Failed to open journal file %s: %m", path); | |
1283 | goto fail; | |
1284 | } | |
1285 | ||
1286 | close_fd = true; | |
1287 | } | |
1288 | ||
1289 | r = journal_file_open(fd, path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, NULL, &f); | |
d617408e | 1290 | if (r < 0) { |
5d1ce257 LP |
1291 | if (close_fd) |
1292 | safe_close(fd); | |
d617408e LP |
1293 | log_debug_errno(r, "Failed to open journal file %s: %m", path); |
1294 | goto fail; | |
1295 | } | |
3fbf9cbb | 1296 | |
72f59706 | 1297 | /* journal_file_dump(f); */ |
de190aef | 1298 | |
c1f906bd | 1299 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1300 | if (r < 0) { |
5d1ce257 | 1301 | f->close_fd = close_fd; |
69a3a6fd | 1302 | (void) journal_file_close(f); |
d617408e | 1303 | goto fail; |
3fbf9cbb LP |
1304 | } |
1305 | ||
5d1ce257 LP |
1306 | if (!j->has_runtime_files && path_has_prefix(j, f->path, "/run")) |
1307 | j->has_runtime_files = true; | |
1308 | else if (!j->has_persistent_files && path_has_prefix(j, f->path, "/var")) | |
1309 | j->has_persistent_files = true; | |
1310 | ||
5ec76417 | 1311 | log_debug("File %s added.", f->path); |
a50d7d43 | 1312 | |
85210bff LP |
1313 | check_network(j, f->fd); |
1314 | ||
313cefa1 | 1315 | j->current_invalidate_counter++; |
a963990f | 1316 | |
50f20cfd | 1317 | return 0; |
d617408e LP |
1318 | |
1319 | fail: | |
5768d259 | 1320 | k = journal_put_error(j, r, path); |
d617408e LP |
1321 | if (k < 0) |
1322 | return k; | |
1323 | ||
1324 | return r; | |
50f20cfd LP |
1325 | } |
1326 | ||
5302ebe1 | 1327 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
d617408e | 1328 | const char *path; |
5302ebe1 ZJS |
1329 | |
1330 | assert(j); | |
1331 | assert(prefix); | |
1332 | assert(filename); | |
1333 | ||
5d1ce257 | 1334 | if (j->no_new_files) |
5302ebe1 ZJS |
1335 | return 0; |
1336 | ||
5d1ce257 LP |
1337 | if (!file_type_wanted(j->flags, filename)) |
1338 | return 0; | |
39fd5b08 | 1339 | |
5d1ce257 LP |
1340 | path = strjoina(prefix, "/", filename); |
1341 | return add_any_file(j, -1, path); | |
5302ebe1 ZJS |
1342 | } |
1343 | ||
d617408e LP |
1344 | static void remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1345 | const char *path; | |
50f20cfd LP |
1346 | JournalFile *f; |
1347 | ||
1348 | assert(j); | |
1349 | assert(prefix); | |
1350 | assert(filename); | |
1351 | ||
d617408e | 1352 | path = strjoina(prefix, "/", filename); |
c1f906bd | 1353 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1354 | if (!f) |
d617408e | 1355 | return; |
50f20cfd | 1356 | |
a9a245c1 | 1357 | remove_file_real(j, f); |
a9a245c1 ZJS |
1358 | } |
1359 | ||
1360 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1361 | assert(j); | |
1362 | assert(f); | |
1363 | ||
c1f906bd | 1364 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1365 | |
5ec76417 | 1366 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1367 | |
3c1668da LP |
1368 | if (j->current_file == f) { |
1369 | j->current_file = NULL; | |
1370 | j->current_field = 0; | |
1371 | } | |
1372 | ||
1373 | if (j->unique_file == f) { | |
360af4cf | 1374 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1375 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1376 | j->unique_offset = 0; |
360af4cf ZJS |
1377 | if (!j->unique_file) |
1378 | j->unique_file_lost = true; | |
3c1668da LP |
1379 | } |
1380 | ||
eb86030e LP |
1381 | if (j->fields_file == f) { |
1382 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1383 | j->fields_offset = 0; | |
1384 | if (!j->fields_file) | |
1385 | j->fields_file_lost = true; | |
1386 | } | |
1387 | ||
69a3a6fd | 1388 | (void) journal_file_close(f); |
50f20cfd | 1389 | |
313cefa1 | 1390 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1391 | } |
1392 | ||
d617408e LP |
1393 | static int dirname_is_machine_id(const char *fn) { |
1394 | sd_id128_t id, machine; | |
1395 | int r; | |
1396 | ||
1397 | r = sd_id128_get_machine(&machine); | |
1398 | if (r < 0) | |
1399 | return r; | |
1400 | ||
1401 | r = sd_id128_from_string(fn, &id); | |
1402 | if (r < 0) | |
1403 | return r; | |
1404 | ||
1405 | return sd_id128_equal(id, machine); | |
1406 | } | |
1407 | ||
a963990f | 1408 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1409 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1410 | _cleanup_closedir_ DIR *d = NULL; |
d617408e | 1411 | struct dirent *de = NULL; |
a963990f | 1412 | Directory *m; |
d617408e | 1413 | int r, k; |
3fbf9cbb LP |
1414 | |
1415 | assert(j); | |
1416 | assert(prefix); | |
3fbf9cbb | 1417 | |
5d1ce257 LP |
1418 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1419 | * and reenumerates directory contents */ | |
d95b1fb3 | 1420 | |
5d1ce257 LP |
1421 | if (dirname) |
1422 | path = strjoin(prefix, "/", dirname, NULL); | |
1423 | else | |
1424 | path = strdup(prefix); | |
d617408e LP |
1425 | if (!path) { |
1426 | r = -ENOMEM; | |
1427 | goto fail; | |
1428 | } | |
3fbf9cbb | 1429 | |
5d1ce257 LP |
1430 | log_debug("Considering directory %s.", path); |
1431 | ||
1432 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1433 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1434 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
1435 | return 0; | |
1436 | ||
1437 | ||
1438 | if (j->toplevel_fd < 0) | |
1439 | d = opendir(path); | |
1440 | else | |
1441 | /* Open the specified directory relative to the the toplevel fd. Enforce that the path specified is | |
1442 | * relative, by dropping the initial slash */ | |
1443 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
3fbf9cbb | 1444 | if (!d) { |
d617408e LP |
1445 | r = log_debug_errno(errno, "Failed to open directory %s: %m", path); |
1446 | goto fail; | |
3fbf9cbb LP |
1447 | } |
1448 | ||
a963990f LP |
1449 | m = hashmap_get(j->directories_by_path, path); |
1450 | if (!m) { | |
1451 | m = new0(Directory, 1); | |
d617408e LP |
1452 | if (!m) { |
1453 | r = -ENOMEM; | |
1454 | goto fail; | |
1455 | } | |
a963990f LP |
1456 | |
1457 | m->is_root = false; | |
1458 | m->path = path; | |
1459 | ||
1460 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1461 | free(m); |
d617408e LP |
1462 | r = -ENOMEM; |
1463 | goto fail; | |
a963990f LP |
1464 | } |
1465 | ||
a50d7d43 | 1466 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1467 | j->current_invalidate_counter++; |
a963990f | 1468 | |
5ec76417 | 1469 | log_debug("Directory %s added.", m->path); |
a963990f | 1470 | |
a50d7d43 | 1471 | } else if (m->is_root) |
a963990f | 1472 | return 0; |
a963990f LP |
1473 | |
1474 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
5d1ce257 | 1475 | /* Watch this directory, if it not being watched yet. */ |
a963990f | 1476 | |
430fbf8e LP |
1477 | m->wd = inotify_add_watch_fd(j->inotify_fd, dirfd(d), |
1478 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1479 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1480 | IN_ONLYDIR); | |
a963990f LP |
1481 | |
1482 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1483 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1484 | } | |
1485 | ||
f6377261 | 1486 | FOREACH_DIRENT_ALL(de, d, r = log_debug_errno(errno, "Failed to read directory %s: %m", m->path); goto fail) { |
a963990f | 1487 | |
de2c3907 | 1488 | if (dirent_is_file_with_suffix(de, ".journal") || |
d617408e LP |
1489 | dirent_is_file_with_suffix(de, ".journal~")) |
1490 | (void) add_file(j, m->path, de->d_name); | |
a963990f LP |
1491 | } |
1492 | ||
85210bff LP |
1493 | check_network(j, dirfd(d)); |
1494 | ||
a963990f | 1495 | return 0; |
d617408e LP |
1496 | |
1497 | fail: | |
5d1ce257 | 1498 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1499 | if (k < 0) |
1500 | return k; | |
1501 | ||
1502 | return r; | |
a963990f LP |
1503 | } |
1504 | ||
d617408e | 1505 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1506 | |
7fd1b19b | 1507 | _cleanup_closedir_ DIR *d = NULL; |
d617408e | 1508 | struct dirent *de; |
a963990f | 1509 | Directory *m; |
d617408e | 1510 | int r, k; |
a963990f LP |
1511 | |
1512 | assert(j); | |
a963990f | 1513 | |
5d1ce257 LP |
1514 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1515 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1516 | * populate the set, as well as to update it later. */ | |
a963990f | 1517 | |
5d1ce257 LP |
1518 | if (p) { |
1519 | /* If there's a path specified, use it. */ | |
b6741478 | 1520 | |
5d1ce257 LP |
1521 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1522 | !path_has_prefix(j, p, "/run")) | |
1523 | return -EINVAL; | |
d617408e | 1524 | |
5d1ce257 LP |
1525 | if (j->prefix) |
1526 | p = strjoina(j->prefix, p); | |
1527 | ||
1528 | if (j->toplevel_fd < 0) | |
1529 | d = opendir(p); | |
1530 | else | |
1531 | d = xopendirat(j->toplevel_fd, skip_slash(p), 0); | |
1532 | ||
1533 | if (!d) { | |
1534 | if (errno == ENOENT && missing_ok) | |
1535 | return 0; | |
1536 | ||
1537 | r = log_debug_errno(errno, "Failed to open root directory %s: %m", p); | |
1538 | goto fail; | |
1539 | } | |
1540 | } else { | |
1541 | int dfd; | |
1542 | ||
1543 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1544 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1545 | ||
1546 | p = "."; /* store this as "." in the directories hashmap */ | |
1547 | ||
1548 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1549 | if (dfd < 0) { | |
1550 | r = -errno; | |
1551 | goto fail; | |
1552 | } | |
1553 | ||
1554 | d = fdopendir(dfd); | |
1555 | if (!d) { | |
1556 | r = -errno; | |
1557 | safe_close(dfd); | |
1558 | goto fail; | |
1559 | } | |
1560 | ||
1561 | rewinddir(d); | |
d617408e | 1562 | } |
a963990f LP |
1563 | |
1564 | m = hashmap_get(j->directories_by_path, p); | |
1565 | if (!m) { | |
1566 | m = new0(Directory, 1); | |
d617408e LP |
1567 | if (!m) { |
1568 | r = -ENOMEM; | |
1569 | goto fail; | |
1570 | } | |
a963990f LP |
1571 | |
1572 | m->is_root = true; | |
5d1ce257 | 1573 | |
a963990f LP |
1574 | m->path = strdup(p); |
1575 | if (!m->path) { | |
a963990f | 1576 | free(m); |
d617408e LP |
1577 | r = -ENOMEM; |
1578 | goto fail; | |
a963990f LP |
1579 | } |
1580 | ||
1581 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1582 | free(m->path); |
1583 | free(m); | |
d617408e LP |
1584 | r = -ENOMEM; |
1585 | goto fail; | |
a963990f LP |
1586 | } |
1587 | ||
313cefa1 | 1588 | j->current_invalidate_counter++; |
a963990f | 1589 | |
5ec76417 | 1590 | log_debug("Root directory %s added.", m->path); |
a963990f | 1591 | |
a50d7d43 | 1592 | } else if (!m->is_root) |
a963990f | 1593 | return 0; |
50f20cfd | 1594 | |
a963990f LP |
1595 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1596 | ||
430fbf8e | 1597 | m->wd = inotify_add_watch_fd(j->inotify_fd, dirfd(d), |
a963990f | 1598 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| |
4a842cad | 1599 | IN_ONLYDIR); |
a963990f LP |
1600 | |
1601 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1602 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1603 | } | |
50f20cfd | 1604 | |
5302ebe1 ZJS |
1605 | if (j->no_new_files) |
1606 | return 0; | |
1607 | ||
f6377261 | 1608 | FOREACH_DIRENT_ALL(de, d, r = log_debug_errno(errno, "Failed to read directory %s: %m", m->path); goto fail) { |
a963990f | 1609 | sd_id128_t id; |
3fbf9cbb | 1610 | |
de2c3907 | 1611 | if (dirent_is_file_with_suffix(de, ".journal") || |
d617408e LP |
1612 | dirent_is_file_with_suffix(de, ".journal~")) |
1613 | (void) add_file(j, m->path, de->d_name); | |
1614 | else if (IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN) && | |
1615 | sd_id128_from_string(de->d_name, &id) >= 0) | |
1616 | (void) add_directory(j, m->path, de->d_name); | |
3fbf9cbb LP |
1617 | } |
1618 | ||
85210bff LP |
1619 | check_network(j, dirfd(d)); |
1620 | ||
a963990f | 1621 | return 0; |
d617408e LP |
1622 | |
1623 | fail: | |
5768d259 | 1624 | k = journal_put_error(j, r, p); |
d617408e LP |
1625 | if (k < 0) |
1626 | return k; | |
1627 | ||
1628 | return r; | |
a963990f LP |
1629 | } |
1630 | ||
b2b46f91 | 1631 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1632 | assert(j); |
1633 | ||
1634 | if (d->wd > 0) { | |
1635 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1636 | ||
1637 | if (j->inotify_fd >= 0) | |
1638 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1639 | } | |
1640 | ||
1641 | hashmap_remove(j->directories_by_path, d->path); | |
1642 | ||
1643 | if (d->is_root) | |
5ec76417 | 1644 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1645 | else |
5ec76417 | 1646 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1647 | |
1648 | free(d->path); | |
1649 | free(d); | |
3fbf9cbb LP |
1650 | } |
1651 | ||
89739579 | 1652 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1653 | |
1654 | static const char search_paths[] = | |
a963990f LP |
1655 | "/run/log/journal\0" |
1656 | "/var/log/journal\0"; | |
1657 | const char *p; | |
50f20cfd LP |
1658 | |
1659 | assert(j); | |
50f20cfd | 1660 | |
a963990f LP |
1661 | /* We ignore most errors here, since the idea is to only open |
1662 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1663 | |
d617408e LP |
1664 | NULSTR_FOREACH(p, search_paths) |
1665 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1666 | |
a963990f | 1667 | return 0; |
50f20cfd LP |
1668 | } |
1669 | ||
5302ebe1 ZJS |
1670 | static int add_current_paths(sd_journal *j) { |
1671 | Iterator i; | |
1672 | JournalFile *f; | |
1673 | ||
1674 | assert(j); | |
1675 | assert(j->no_new_files); | |
1676 | ||
5d1ce257 | 1677 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1678 | * treat them as fatal. */ |
1679 | ||
c1f906bd | 1680 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1681 | _cleanup_free_ char *dir; |
e9174f29 | 1682 | int r; |
5302ebe1 ZJS |
1683 | |
1684 | dir = dirname_malloc(f->path); | |
1685 | if (!dir) | |
1686 | return -ENOMEM; | |
1687 | ||
5d1ce257 | 1688 | r = add_directory(j, dir, NULL); |
d617408e | 1689 | if (r < 0) |
5302ebe1 | 1690 | return r; |
5302ebe1 ZJS |
1691 | } |
1692 | ||
1693 | return 0; | |
1694 | } | |
1695 | ||
a963990f | 1696 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1697 | assert(j); |
50f20cfd | 1698 | |
a963990f LP |
1699 | if (j->inotify_fd < 0) { |
1700 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1701 | if (j->inotify_fd < 0) | |
1702 | return -errno; | |
1703 | } | |
50f20cfd | 1704 | |
cb306f5d | 1705 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
1706 | } |
1707 | ||
7827b1a1 | 1708 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1709 | sd_journal *j; |
50f20cfd | 1710 | |
a963990f LP |
1711 | j = new0(sd_journal, 1); |
1712 | if (!j) | |
1713 | return NULL; | |
50f20cfd | 1714 | |
a65f06bb | 1715 | j->original_pid = getpid(); |
5d1ce257 | 1716 | j->toplevel_fd = -1; |
a963990f LP |
1717 | j->inotify_fd = -1; |
1718 | j->flags = flags; | |
93b73b06 | 1719 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1720 | |
7827b1a1 LP |
1721 | if (path) { |
1722 | j->path = strdup(path); | |
6180fc61 ZJS |
1723 | if (!j->path) |
1724 | goto fail; | |
7827b1a1 LP |
1725 | } |
1726 | ||
c1f906bd | 1727 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1728 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1729 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1730 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1731 | goto fail; |
16e9f408 | 1732 | |
a963990f | 1733 | return j; |
6180fc61 ZJS |
1734 | |
1735 | fail: | |
1736 | sd_journal_close(j); | |
1737 | return NULL; | |
50f20cfd LP |
1738 | } |
1739 | ||
a5344d2c | 1740 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1741 | sd_journal *j; |
3fbf9cbb | 1742 | int r; |
87d2c1ff | 1743 | |
1ae464e0 | 1744 | assert_return(ret, -EINVAL); |
b6741478 | 1745 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1746 | |
7827b1a1 | 1747 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1748 | if (!j) |
1749 | return -ENOMEM; | |
1750 | ||
89739579 | 1751 | r = add_search_paths(j); |
a963990f | 1752 | if (r < 0) |
50f20cfd | 1753 | goto fail; |
50f20cfd | 1754 | |
a963990f LP |
1755 | *ret = j; |
1756 | return 0; | |
cf244689 | 1757 | |
a963990f LP |
1758 | fail: |
1759 | sd_journal_close(j); | |
87d2c1ff | 1760 | |
a963990f LP |
1761 | return r; |
1762 | } | |
50f20cfd | 1763 | |
b6741478 LP |
1764 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1765 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1766 | sd_journal *j; | |
1767 | char *p; | |
1768 | int r; | |
1769 | ||
2daa9cbd LP |
1770 | /* This is pretty much deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
1771 | * combination with sd_journal_open_directory_fd(). */ | |
1772 | ||
b6741478 LP |
1773 | assert_return(machine, -EINVAL); |
1774 | assert_return(ret, -EINVAL); | |
1775 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1776 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1777 | |
63c372cb | 1778 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1779 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1780 | if (r == -ENOENT) | |
1781 | return -EHOSTDOWN; | |
1782 | if (r < 0) | |
1783 | return r; | |
1784 | if (!root) | |
1785 | return -ENODATA; | |
1786 | ||
1787 | if (!streq_ptr(class, "container")) | |
1788 | return -EIO; | |
1789 | ||
1790 | j = journal_new(flags, NULL); | |
1791 | if (!j) | |
1792 | return -ENOMEM; | |
1793 | ||
89739579 LP |
1794 | j->prefix = root; |
1795 | root = NULL; | |
1796 | ||
1797 | r = add_search_paths(j); | |
b6741478 LP |
1798 | if (r < 0) |
1799 | goto fail; | |
1800 | ||
1801 | *ret = j; | |
1802 | return 0; | |
1803 | ||
1804 | fail: | |
1805 | sd_journal_close(j); | |
1806 | return r; | |
1807 | } | |
1808 | ||
a963990f LP |
1809 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1810 | sd_journal *j; | |
1811 | int r; | |
87d2c1ff | 1812 | |
1ae464e0 TA |
1813 | assert_return(ret, -EINVAL); |
1814 | assert_return(path, -EINVAL); | |
d077390c | 1815 | assert_return((flags & ~SD_JOURNAL_OS_ROOT) == 0, -EINVAL); |
87d2c1ff | 1816 | |
7827b1a1 | 1817 | j = journal_new(flags, path); |
a963990f LP |
1818 | if (!j) |
1819 | return -ENOMEM; | |
3fbf9cbb | 1820 | |
d077390c LP |
1821 | if (flags & SD_JOURNAL_OS_ROOT) |
1822 | r = add_search_paths(j); | |
1823 | else | |
1824 | r = add_root_directory(j, path, false); | |
d617408e | 1825 | if (r < 0) |
a963990f | 1826 | goto fail; |
87d2c1ff LP |
1827 | |
1828 | *ret = j; | |
1829 | return 0; | |
1830 | ||
1831 | fail: | |
1832 | sd_journal_close(j); | |
87d2c1ff | 1833 | return r; |
a963990f | 1834 | } |
87d2c1ff | 1835 | |
5302ebe1 ZJS |
1836 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1837 | sd_journal *j; | |
1838 | const char **path; | |
1839 | int r; | |
1840 | ||
1ae464e0 TA |
1841 | assert_return(ret, -EINVAL); |
1842 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1843 | |
1844 | j = journal_new(flags, NULL); | |
1845 | if (!j) | |
1846 | return -ENOMEM; | |
1847 | ||
1848 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 1849 | r = add_any_file(j, -1, *path); |
d617408e | 1850 | if (r < 0) |
5302ebe1 | 1851 | goto fail; |
5302ebe1 ZJS |
1852 | } |
1853 | ||
1854 | j->no_new_files = true; | |
1855 | ||
1856 | *ret = j; | |
1857 | return 0; | |
1858 | ||
1859 | fail: | |
1860 | sd_journal_close(j); | |
5d1ce257 LP |
1861 | return r; |
1862 | } | |
1863 | ||
1864 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { | |
1865 | sd_journal *j; | |
1866 | struct stat st; | |
1867 | int r; | |
1868 | ||
1869 | assert_return(ret, -EINVAL); | |
1870 | assert_return(fd >= 0, -EBADF); | |
d077390c | 1871 | assert_return((flags & ~SD_JOURNAL_OS_ROOT) == 0, -EINVAL); |
5d1ce257 LP |
1872 | |
1873 | if (fstat(fd, &st) < 0) | |
1874 | return -errno; | |
1875 | ||
1876 | if (!S_ISDIR(st.st_mode)) | |
1877 | return -EBADFD; | |
1878 | ||
1879 | j = journal_new(flags, NULL); | |
1880 | if (!j) | |
1881 | return -ENOMEM; | |
1882 | ||
1883 | j->toplevel_fd = fd; | |
1884 | ||
d077390c LP |
1885 | if (flags & SD_JOURNAL_OS_ROOT) |
1886 | r = add_search_paths(j); | |
1887 | else | |
1888 | r = add_root_directory(j, NULL, false); | |
5d1ce257 LP |
1889 | if (r < 0) |
1890 | goto fail; | |
1891 | ||
1892 | *ret = j; | |
1893 | return 0; | |
1894 | ||
1895 | fail: | |
1896 | sd_journal_close(j); | |
1897 | return r; | |
1898 | } | |
1899 | ||
1900 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
1901 | Iterator iterator; | |
1902 | JournalFile *f; | |
1903 | sd_journal *j; | |
1904 | unsigned i; | |
1905 | int r; | |
1906 | ||
1907 | assert_return(ret, -EINVAL); | |
1908 | assert_return(n_fds > 0, -EBADF); | |
1909 | assert_return(flags == 0, -EINVAL); | |
1910 | ||
1911 | j = journal_new(flags, NULL); | |
1912 | if (!j) | |
1913 | return -ENOMEM; | |
1914 | ||
1915 | for (i = 0; i < n_fds; i++) { | |
1916 | struct stat st; | |
1917 | ||
1918 | if (fds[i] < 0) { | |
1919 | r = -EBADF; | |
1920 | goto fail; | |
1921 | } | |
1922 | ||
1923 | if (fstat(fds[i], &st) < 0) { | |
1924 | r = -errno; | |
1925 | goto fail; | |
1926 | } | |
1927 | ||
1928 | if (!S_ISREG(st.st_mode)) { | |
1929 | r = -EBADFD; | |
1930 | goto fail; | |
1931 | } | |
1932 | ||
1933 | r = add_any_file(j, fds[i], NULL); | |
1934 | if (r < 0) | |
1935 | goto fail; | |
1936 | } | |
1937 | ||
1938 | j->no_new_files = true; | |
1939 | j->no_inotify = true; | |
5302ebe1 | 1940 | |
5d1ce257 LP |
1941 | *ret = j; |
1942 | return 0; | |
1943 | ||
1944 | fail: | |
f8e2f4d6 | 1945 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 LP |
1946 | * remain open */ |
1947 | ORDERED_HASHMAP_FOREACH(f, j->files, iterator) | |
1948 | f->close_fd = false; | |
1949 | ||
1950 | sd_journal_close(j); | |
5302ebe1 ZJS |
1951 | return r; |
1952 | } | |
1953 | ||
a5344d2c | 1954 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1955 | Directory *d; |
1956 | JournalFile *f; | |
5768d259 | 1957 | char *p; |
a963990f | 1958 | |
a5344d2c LP |
1959 | if (!j) |
1960 | return; | |
87d2c1ff | 1961 | |
54b1da83 LP |
1962 | sd_journal_flush_matches(j); |
1963 | ||
c1f906bd | 1964 | while ((f = ordered_hashmap_steal_first(j->files))) |
69a3a6fd | 1965 | (void) journal_file_close(f); |
50f20cfd | 1966 | |
c1f906bd | 1967 | ordered_hashmap_free(j->files); |
260a2be4 | 1968 | |
a963990f LP |
1969 | while ((d = hashmap_first(j->directories_by_path))) |
1970 | remove_directory(j, d); | |
260a2be4 | 1971 | |
a963990f LP |
1972 | while ((d = hashmap_first(j->directories_by_wd))) |
1973 | remove_directory(j, d); | |
87d2c1ff | 1974 | |
a963990f LP |
1975 | hashmap_free(j->directories_by_path); |
1976 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1977 | |
03e334a1 | 1978 | safe_close(j->inotify_fd); |
50f20cfd | 1979 | |
bf807d4d LP |
1980 | if (j->mmap) { |
1981 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1982 | mmap_cache_unref(j->mmap); |
bf807d4d | 1983 | } |
16e9f408 | 1984 | |
5768d259 LP |
1985 | while ((p = hashmap_steal_first(j->errors))) |
1986 | free(p); | |
1987 | hashmap_free(j->errors); | |
1988 | ||
7827b1a1 | 1989 | free(j->path); |
89739579 | 1990 | free(j->prefix); |
3c1668da | 1991 | free(j->unique_field); |
eb86030e | 1992 | free(j->fields_buffer); |
87d2c1ff LP |
1993 | free(j); |
1994 | } | |
3fbf9cbb | 1995 | |
a5344d2c | 1996 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1997 | Object *o; |
1998 | JournalFile *f; | |
1999 | int r; | |
2000 | ||
1ae464e0 TA |
2001 | assert_return(j, -EINVAL); |
2002 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2003 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
2004 | |
2005 | f = j->current_file; | |
2006 | if (!f) | |
de190aef | 2007 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2008 | |
2009 | if (f->current_offset <= 0) | |
de190aef | 2010 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2011 | |
de190aef | 2012 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2013 | if (r < 0) |
2014 | return r; | |
2015 | ||
2016 | *ret = le64toh(o->entry.realtime); | |
de190aef | 2017 | return 0; |
3fbf9cbb LP |
2018 | } |
2019 | ||
a5344d2c | 2020 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
2021 | Object *o; |
2022 | JournalFile *f; | |
2023 | int r; | |
2024 | sd_id128_t id; | |
2025 | ||
1ae464e0 TA |
2026 | assert_return(j, -EINVAL); |
2027 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
2028 | |
2029 | f = j->current_file; | |
2030 | if (!f) | |
de190aef | 2031 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2032 | |
2033 | if (f->current_offset <= 0) | |
de190aef | 2034 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2035 | |
de190aef | 2036 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2037 | if (r < 0) |
2038 | return r; | |
2039 | ||
de190aef LP |
2040 | if (ret_boot_id) |
2041 | *ret_boot_id = o->entry.boot_id; | |
2042 | else { | |
2043 | r = sd_id128_get_boot(&id); | |
2044 | if (r < 0) | |
2045 | return r; | |
3fbf9cbb | 2046 | |
de190aef | 2047 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2048 | return -ESTALE; |
de190aef | 2049 | } |
3fbf9cbb | 2050 | |
14a65d65 LP |
2051 | if (ret) |
2052 | *ret = le64toh(o->entry.monotonic); | |
2053 | ||
de190aef | 2054 | return 0; |
3fbf9cbb LP |
2055 | } |
2056 | ||
362a3f81 LP |
2057 | static bool field_is_valid(const char *field) { |
2058 | const char *p; | |
2059 | ||
2060 | assert(field); | |
2061 | ||
2062 | if (isempty(field)) | |
2063 | return false; | |
2064 | ||
2065 | if (startswith(field, "__")) | |
2066 | return false; | |
2067 | ||
2068 | for (p = field; *p; p++) { | |
2069 | ||
2070 | if (*p == '_') | |
2071 | continue; | |
2072 | ||
2073 | if (*p >= 'A' && *p <= 'Z') | |
2074 | continue; | |
2075 | ||
2076 | if (*p >= '0' && *p <= '9') | |
2077 | continue; | |
2078 | ||
2079 | return false; | |
2080 | } | |
2081 | ||
2082 | return true; | |
2083 | } | |
2084 | ||
a5344d2c | 2085 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
2086 | JournalFile *f; |
2087 | uint64_t i, n; | |
2088 | size_t field_length; | |
2089 | int r; | |
2090 | Object *o; | |
2091 | ||
1ae464e0 TA |
2092 | assert_return(j, -EINVAL); |
2093 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2094 | assert_return(field, -EINVAL); | |
2095 | assert_return(data, -EINVAL); | |
2096 | assert_return(size, -EINVAL); | |
2097 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2098 | |
2099 | f = j->current_file; | |
2100 | if (!f) | |
de190aef | 2101 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2102 | |
2103 | if (f->current_offset <= 0) | |
de190aef | 2104 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2105 | |
de190aef | 2106 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2107 | if (r < 0) |
2108 | return r; | |
2109 | ||
2110 | field_length = strlen(field); | |
2111 | ||
2112 | n = journal_file_entry_n_items(o); | |
2113 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2114 | uint64_t p, l; |
2115 | le64_t le_hash; | |
3fbf9cbb | 2116 | size_t t; |
1ec7120e | 2117 | int compression; |
3fbf9cbb LP |
2118 | |
2119 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 2120 | le_hash = o->entry.items[i].hash; |
de190aef | 2121 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
2122 | if (r < 0) |
2123 | return r; | |
2124 | ||
de190aef | 2125 | if (le_hash != o->data.hash) |
de7b95cd LP |
2126 | return -EBADMSG; |
2127 | ||
3fbf9cbb LP |
2128 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
2129 | ||
1ec7120e | 2130 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
2131 | if (compression) { |
2132 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
2aaec9b4 | 2133 | r = decompress_startswith(compression, |
3b1a55e1 ZJS |
2134 | o->data.payload, l, |
2135 | &f->compress_buffer, &f->compress_buffer_size, | |
2aaec9b4 ZJS |
2136 | field, field_length, '='); |
2137 | if (r < 0) | |
82e24b00 | 2138 | log_debug_errno(r, "Cannot decompress %s object of length %"PRIu64" at offset "OFSfmt": %m", |
2aaec9b4 ZJS |
2139 | object_compressed_to_string(compression), l, p); |
2140 | else if (r > 0) { | |
3b1a55e1 | 2141 | |
fa1c4b51 | 2142 | size_t rsize; |
3b1a55e1 ZJS |
2143 | |
2144 | r = decompress_blob(compression, | |
2145 | o->data.payload, l, | |
2146 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
2147 | j->data_threshold); | |
2148 | if (r < 0) | |
2149 | return r; | |
807e17f0 | 2150 | |
3b1a55e1 ZJS |
2151 | *data = f->compress_buffer; |
2152 | *size = (size_t) rsize; | |
807e17f0 | 2153 | |
3b1a55e1 ZJS |
2154 | return 0; |
2155 | } | |
2156 | #else | |
2157 | return -EPROTONOSUPPORT; | |
2158 | #endif | |
807e17f0 LP |
2159 | } else if (l >= field_length+1 && |
2160 | memcmp(o->data.payload, field, field_length) == 0 && | |
2161 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2162 | |
161e54f8 | 2163 | t = (size_t) l; |
3fbf9cbb | 2164 | |
161e54f8 LP |
2165 | if ((uint64_t) t != l) |
2166 | return -E2BIG; | |
3fbf9cbb | 2167 | |
161e54f8 LP |
2168 | *data = o->data.payload; |
2169 | *size = t; | |
3fbf9cbb | 2170 | |
99613ec5 | 2171 | return 0; |
161e54f8 | 2172 | } |
3fbf9cbb | 2173 | |
de190aef | 2174 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2175 | if (r < 0) |
2176 | return r; | |
3fbf9cbb LP |
2177 | } |
2178 | ||
de190aef | 2179 | return -ENOENT; |
3fbf9cbb LP |
2180 | } |
2181 | ||
93b73b06 | 2182 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2183 | size_t t; |
2184 | uint64_t l; | |
3b1a55e1 | 2185 | int compression; |
3c1668da LP |
2186 | |
2187 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2188 | t = (size_t) l; | |
2189 | ||
2190 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2191 | if ((uint64_t) t != l) | |
2192 | return -E2BIG; | |
2193 | ||
1ec7120e ZJS |
2194 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2195 | if (compression) { | |
3b1a55e1 | 2196 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 2197 | size_t rsize; |
3b1a55e1 | 2198 | int r; |
3c1668da | 2199 | |
1ec7120e ZJS |
2200 | r = decompress_blob(compression, |
2201 | o->data.payload, l, &f->compress_buffer, | |
2202 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2203 | if (r < 0) | |
2204 | return r; | |
3c1668da LP |
2205 | |
2206 | *data = f->compress_buffer; | |
2207 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2208 | #else |
2209 | return -EPROTONOSUPPORT; | |
2210 | #endif | |
3c1668da LP |
2211 | } else { |
2212 | *data = o->data.payload; | |
2213 | *size = t; | |
2214 | } | |
2215 | ||
2216 | return 0; | |
2217 | } | |
2218 | ||
a5344d2c | 2219 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2220 | JournalFile *f; |
3c1668da | 2221 | uint64_t p, n; |
4fd052ae | 2222 | le64_t le_hash; |
3fbf9cbb LP |
2223 | int r; |
2224 | Object *o; | |
2225 | ||
1ae464e0 TA |
2226 | assert_return(j, -EINVAL); |
2227 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2228 | assert_return(data, -EINVAL); | |
2229 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2230 | |
2231 | f = j->current_file; | |
2232 | if (!f) | |
de190aef | 2233 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2234 | |
2235 | if (f->current_offset <= 0) | |
de190aef | 2236 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2237 | |
de190aef | 2238 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2239 | if (r < 0) |
2240 | return r; | |
2241 | ||
2242 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2243 | if (j->current_field >= n) |
3fbf9cbb LP |
2244 | return 0; |
2245 | ||
7210bfb3 | 2246 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2247 | le_hash = o->entry.items[j->current_field].hash; |
2248 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2249 | if (r < 0) |
2250 | return r; | |
2251 | ||
de190aef | 2252 | if (le_hash != o->data.hash) |
de7b95cd LP |
2253 | return -EBADMSG; |
2254 | ||
93b73b06 | 2255 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2256 | if (r < 0) |
2257 | return r; | |
3fbf9cbb | 2258 | |
313cefa1 | 2259 | j->current_field++; |
3fbf9cbb LP |
2260 | |
2261 | return 1; | |
2262 | } | |
c2373f84 | 2263 | |
a5344d2c LP |
2264 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2265 | if (!j) | |
2266 | return; | |
8725d60a LP |
2267 | |
2268 | j->current_field = 0; | |
c2373f84 | 2269 | } |
50f20cfd | 2270 | |
a5344d2c | 2271 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2272 | int r; |
2273 | ||
1ae464e0 TA |
2274 | assert_return(j, -EINVAL); |
2275 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2276 | |
5d1ce257 LP |
2277 | if (j->no_inotify) |
2278 | return -EMEDIUMTYPE; | |
2279 | ||
a963990f LP |
2280 | if (j->inotify_fd >= 0) |
2281 | return j->inotify_fd; | |
2282 | ||
2283 | r = allocate_inotify(j); | |
2284 | if (r < 0) | |
2285 | return r; | |
2286 | ||
5d1ce257 LP |
2287 | log_debug("Reiterating files to get inotify watches established"); |
2288 | ||
a963990f LP |
2289 | /* Iterate through all dirs again, to add them to the |
2290 | * inotify */ | |
5302ebe1 ZJS |
2291 | if (j->no_new_files) |
2292 | r = add_current_paths(j); | |
5d1ce257 LP |
2293 | else if (j->toplevel_fd >= 0) |
2294 | r = add_root_directory(j, NULL, false); | |
5302ebe1 | 2295 | else if (j->path) |
d617408e | 2296 | r = add_root_directory(j, j->path, true); |
7827b1a1 | 2297 | else |
89739579 | 2298 | r = add_search_paths(j); |
a963990f LP |
2299 | if (r < 0) |
2300 | return r; | |
2301 | ||
50f20cfd LP |
2302 | return j->inotify_fd; |
2303 | } | |
2304 | ||
ee531d94 LP |
2305 | _public_ int sd_journal_get_events(sd_journal *j) { |
2306 | int fd; | |
2307 | ||
1ae464e0 TA |
2308 | assert_return(j, -EINVAL); |
2309 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2310 | |
2311 | fd = sd_journal_get_fd(j); | |
2312 | if (fd < 0) | |
2313 | return fd; | |
2314 | ||
2315 | return POLLIN; | |
2316 | } | |
2317 | ||
39c155ea LP |
2318 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2319 | int fd; | |
2320 | ||
1ae464e0 TA |
2321 | assert_return(j, -EINVAL); |
2322 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2323 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2324 | |
2325 | fd = sd_journal_get_fd(j); | |
2326 | if (fd < 0) | |
2327 | return fd; | |
2328 | ||
2329 | if (!j->on_network) { | |
2330 | *timeout_usec = (uint64_t) -1; | |
2331 | return 0; | |
2332 | } | |
2333 | ||
2334 | /* If we are on the network we need to regularly check for | |
2335 | * changes manually */ | |
2336 | ||
2337 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2338 | return 1; | |
2339 | } | |
2340 | ||
50f20cfd | 2341 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2342 | Directory *d; |
50f20cfd LP |
2343 | |
2344 | assert(j); | |
2345 | assert(e); | |
2346 | ||
2347 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2348 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2349 | if (d) { | |
2350 | sd_id128_t id; | |
50f20cfd | 2351 | |
de2c3907 LP |
2352 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2353 | (endswith(e->name, ".journal") || | |
2354 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2355 | |
2356 | /* Event for a journal file */ | |
2357 | ||
d617408e LP |
2358 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2359 | (void) add_file(j, d->path, e->name); | |
2360 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) | |
2361 | remove_file(j, d->path, e->name); | |
50f20cfd | 2362 | |
a963990f | 2363 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2364 | |
a963990f | 2365 | /* Event for a subdirectory */ |
50f20cfd | 2366 | |
b2b46f91 TA |
2367 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2368 | remove_directory(j, d); | |
50f20cfd | 2369 | |
a963990f | 2370 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2371 | |
a963990f | 2372 | /* Event for root directory */ |
50f20cfd | 2373 | |
d617408e LP |
2374 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2375 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2376 | } |
2377 | ||
2378 | return; | |
2379 | } | |
2380 | ||
2381 | if (e->mask & IN_IGNORED) | |
2382 | return; | |
2383 | ||
d617408e | 2384 | log_debug("Unknown inotify event."); |
50f20cfd LP |
2385 | } |
2386 | ||
a963990f LP |
2387 | static int determine_change(sd_journal *j) { |
2388 | bool b; | |
2389 | ||
2390 | assert(j); | |
2391 | ||
2392 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2393 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2394 | ||
2395 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2396 | } | |
2397 | ||
a5344d2c | 2398 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2399 | bool got_something = false; |
50f20cfd | 2400 | |
1ae464e0 TA |
2401 | assert_return(j, -EINVAL); |
2402 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2403 | |
39c155ea LP |
2404 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2405 | ||
50f20cfd | 2406 | for (;;) { |
0254e944 | 2407 | union inotify_event_buffer buffer; |
50f20cfd LP |
2408 | struct inotify_event *e; |
2409 | ssize_t l; | |
2410 | ||
0254e944 | 2411 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2412 | if (l < 0) { |
a963990f LP |
2413 | if (errno == EAGAIN || errno == EINTR) |
2414 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2415 | |
2416 | return -errno; | |
2417 | } | |
2418 | ||
a963990f LP |
2419 | got_something = true; |
2420 | ||
f7c1ad4f | 2421 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2422 | process_inotify_event(j, e); |
50f20cfd LP |
2423 | } |
2424 | } | |
6ad1d1c3 | 2425 | |
e02d1cf7 | 2426 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2427 | int r; |
39c155ea | 2428 | uint64_t t; |
e02d1cf7 | 2429 | |
1ae464e0 TA |
2430 | assert_return(j, -EINVAL); |
2431 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2432 | |
a963990f LP |
2433 | if (j->inotify_fd < 0) { |
2434 | ||
2435 | /* This is the first invocation, hence create the | |
2436 | * inotify watch */ | |
2437 | r = sd_journal_get_fd(j); | |
2438 | if (r < 0) | |
2439 | return r; | |
2440 | ||
2441 | /* The journal might have changed since the context | |
2442 | * object was created and we weren't watching before, | |
2443 | * hence don't wait for anything, and return | |
2444 | * immediately. */ | |
2445 | return determine_change(j); | |
2446 | } | |
2447 | ||
39c155ea LP |
2448 | r = sd_journal_get_timeout(j, &t); |
2449 | if (r < 0) | |
2450 | return r; | |
2451 | ||
2452 | if (t != (uint64_t) -1) { | |
2453 | usec_t n; | |
2454 | ||
2455 | n = now(CLOCK_MONOTONIC); | |
2456 | t = t > n ? t - n : 0; | |
85210bff | 2457 | |
39c155ea LP |
2458 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2459 | timeout_usec = t; | |
85210bff LP |
2460 | } |
2461 | ||
a963990f LP |
2462 | do { |
2463 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2464 | } while (r == -EINTR); | |
e02d1cf7 LP |
2465 | |
2466 | if (r < 0) | |
2467 | return r; | |
2468 | ||
a963990f | 2469 | return sd_journal_process(j); |
e02d1cf7 LP |
2470 | } |
2471 | ||
08984293 LP |
2472 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2473 | Iterator i; | |
2474 | JournalFile *f; | |
2475 | bool first = true; | |
581483bf | 2476 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2477 | int r; |
2478 | ||
1ae464e0 TA |
2479 | assert_return(j, -EINVAL); |
2480 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2481 | assert_return(from || to, -EINVAL); | |
2482 | assert_return(from != to, -EINVAL); | |
08984293 | 2483 | |
c1f906bd | 2484 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2485 | usec_t fr, t; |
2486 | ||
2487 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2488 | if (r == -ENOENT) |
2489 | continue; | |
08984293 LP |
2490 | if (r < 0) |
2491 | return r; | |
2492 | if (r == 0) | |
2493 | continue; | |
2494 | ||
2495 | if (first) { | |
581483bf LP |
2496 | fmin = fr; |
2497 | tmax = t; | |
08984293 LP |
2498 | first = false; |
2499 | } else { | |
581483bf LP |
2500 | fmin = MIN(fr, fmin); |
2501 | tmax = MAX(t, tmax); | |
08984293 LP |
2502 | } |
2503 | } | |
2504 | ||
581483bf LP |
2505 | if (from) |
2506 | *from = fmin; | |
2507 | if (to) | |
2508 | *to = tmax; | |
2509 | ||
08984293 LP |
2510 | return first ? 0 : 1; |
2511 | } | |
2512 | ||
2513 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2514 | Iterator i; | |
2515 | JournalFile *f; | |
1651e2c6 | 2516 | bool found = false; |
08984293 LP |
2517 | int r; |
2518 | ||
1ae464e0 TA |
2519 | assert_return(j, -EINVAL); |
2520 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2521 | assert_return(from || to, -EINVAL); | |
2522 | assert_return(from != to, -EINVAL); | |
08984293 | 2523 | |
c1f906bd | 2524 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2525 | usec_t fr, t; |
2526 | ||
2527 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2528 | if (r == -ENOENT) |
2529 | continue; | |
08984293 LP |
2530 | if (r < 0) |
2531 | return r; | |
2532 | if (r == 0) | |
2533 | continue; | |
2534 | ||
1651e2c6 | 2535 | if (found) { |
08984293 | 2536 | if (from) |
1651e2c6 | 2537 | *from = MIN(fr, *from); |
08984293 | 2538 | if (to) |
1651e2c6 | 2539 | *to = MAX(t, *to); |
08984293 LP |
2540 | } else { |
2541 | if (from) | |
1651e2c6 | 2542 | *from = fr; |
08984293 | 2543 | if (to) |
1651e2c6 ZJS |
2544 | *to = t; |
2545 | found = true; | |
08984293 LP |
2546 | } |
2547 | } | |
2548 | ||
1651e2c6 | 2549 | return found; |
08984293 LP |
2550 | } |
2551 | ||
dca6219e LP |
2552 | void journal_print_header(sd_journal *j) { |
2553 | Iterator i; | |
2554 | JournalFile *f; | |
2555 | bool newline = false; | |
2556 | ||
2557 | assert(j); | |
2558 | ||
c1f906bd | 2559 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2560 | if (newline) |
2561 | putchar('\n'); | |
2562 | else | |
2563 | newline = true; | |
2564 | ||
2565 | journal_file_print_header(f); | |
2566 | } | |
2567 | } | |
08984293 | 2568 | |
a1a03e30 LP |
2569 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2570 | Iterator i; | |
2571 | JournalFile *f; | |
2572 | uint64_t sum = 0; | |
2573 | ||
1ae464e0 TA |
2574 | assert_return(j, -EINVAL); |
2575 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2576 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2577 | |
c1f906bd | 2578 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2579 | struct stat st; |
2580 | ||
2581 | if (fstat(f->fd, &st) < 0) | |
2582 | return -errno; | |
2583 | ||
2584 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2585 | } | |
2586 | ||
2587 | *bytes = sum; | |
2588 | return 0; | |
2589 | } | |
2590 | ||
3c1668da LP |
2591 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2592 | char *f; | |
2593 | ||
1ae464e0 TA |
2594 | assert_return(j, -EINVAL); |
2595 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2596 | assert_return(!isempty(field), -EINVAL); | |
2597 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2598 | |
2599 | f = strdup(field); | |
2600 | if (!f) | |
2601 | return -ENOMEM; | |
2602 | ||
2603 | free(j->unique_field); | |
2604 | j->unique_field = f; | |
2605 | j->unique_file = NULL; | |
2606 | j->unique_offset = 0; | |
360af4cf | 2607 | j->unique_file_lost = false; |
3c1668da LP |
2608 | |
2609 | return 0; | |
2610 | } | |
2611 | ||
2612 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2613 | size_t k; |
19a2bd80 | 2614 | |
1ae464e0 TA |
2615 | assert_return(j, -EINVAL); |
2616 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2617 | assert_return(data, -EINVAL); | |
2618 | assert_return(l, -EINVAL); | |
2619 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2620 | |
3c1668da | 2621 | k = strlen(j->unique_field); |
19a2bd80 | 2622 | |
3c1668da | 2623 | if (!j->unique_file) { |
360af4cf ZJS |
2624 | if (j->unique_file_lost) |
2625 | return 0; | |
2626 | ||
c1f906bd | 2627 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2628 | if (!j->unique_file) |
2629 | return 0; | |
360af4cf | 2630 | |
3c1668da LP |
2631 | j->unique_offset = 0; |
2632 | } | |
19a2bd80 | 2633 | |
3c1668da LP |
2634 | for (;;) { |
2635 | JournalFile *of; | |
2636 | Iterator i; | |
ae97089d | 2637 | Object *o; |
3c1668da LP |
2638 | const void *odata; |
2639 | size_t ol; | |
2640 | bool found; | |
ae97089d | 2641 | int r; |
3c1668da | 2642 | |
bdc02927 | 2643 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2644 | if (j->unique_offset == 0) { |
2645 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2646 | if (r < 0) | |
2647 | return r; | |
2648 | ||
2649 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2650 | } else { | |
2651 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2652 | if (r < 0) | |
2653 | return r; | |
2654 | ||
2655 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2656 | } | |
2657 | ||
2658 | /* We reached the end of the list? Then start again, with the next file */ | |
2659 | if (j->unique_offset == 0) { | |
c1f906bd | 2660 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2661 | if (!j->unique_file) |
3c1668da LP |
2662 | return 0; |
2663 | ||
3c1668da LP |
2664 | continue; |
2665 | } | |
2666 | ||
d05089d8 MS |
2667 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2668 | * instead, so that we can look at this data object at the same | |
3c1668da | 2669 | * time as one on another file */ |
d05089d8 | 2670 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2671 | if (r < 0) |
2672 | return r; | |
2673 | ||
2674 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2675 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2676 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2677 | j->unique_file->path, j->unique_offset, |
2678 | o->object.type, OBJECT_DATA); | |
3c1668da | 2679 | return -EBADMSG; |
ae97089d ZJS |
2680 | } |
2681 | ||
93b73b06 | 2682 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2683 | if (r < 0) |
2684 | return r; | |
2685 | ||
0f99f74a ZJS |
2686 | /* Check if we have at least the field name and "=". */ |
2687 | if (ol <= k) { | |
2688 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2689 | j->unique_file->path, j->unique_offset, | |
2690 | ol, k + 1); | |
2691 | return -EBADMSG; | |
2692 | } | |
2693 | ||
2694 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2695 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2696 | j->unique_file->path, j->unique_offset, | |
2697 | j->unique_field); | |
2698 | return -EBADMSG; | |
2699 | } | |
2700 | ||
3c1668da LP |
2701 | /* OK, now let's see if we already returned this data |
2702 | * object by checking if it exists in the earlier | |
2703 | * traversed files. */ | |
2704 | found = false; | |
c1f906bd | 2705 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2706 | if (of == j->unique_file) |
2707 | break; | |
2708 | ||
ed71f956 LP |
2709 | /* Skip this file it didn't have any fields indexed */ |
2710 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2711 | continue; |
2712 | ||
ed71f956 | 2713 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); |
3c1668da LP |
2714 | if (r < 0) |
2715 | return r; | |
ed71f956 | 2716 | if (r > 0) { |
3c1668da | 2717 | found = true; |
ed71f956 LP |
2718 | break; |
2719 | } | |
3c1668da LP |
2720 | } |
2721 | ||
06cc69d4 JJ |
2722 | if (found) |
2723 | continue; | |
2724 | ||
93b73b06 | 2725 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2726 | if (r < 0) |
2727 | return r; | |
2728 | ||
2729 | return 1; | |
2730 | } | |
2731 | } | |
2732 | ||
115646c7 | 2733 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2734 | if (!j) |
2735 | return; | |
2736 | ||
2737 | j->unique_file = NULL; | |
2738 | j->unique_offset = 0; | |
360af4cf | 2739 | j->unique_file_lost = false; |
3c1668da | 2740 | } |
85210bff | 2741 | |
eb86030e LP |
2742 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
2743 | int r; | |
2744 | ||
2745 | assert_return(j, -EINVAL); | |
2746 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2747 | assert_return(field, -EINVAL); | |
2748 | ||
2749 | if (!j->fields_file) { | |
2750 | if (j->fields_file_lost) | |
2751 | return 0; | |
2752 | ||
2753 | j->fields_file = ordered_hashmap_first(j->files); | |
2754 | if (!j->fields_file) | |
2755 | return 0; | |
2756 | ||
2757 | j->fields_hash_table_index = 0; | |
2758 | j->fields_offset = 0; | |
2759 | } | |
2760 | ||
2761 | for (;;) { | |
2762 | JournalFile *f, *of; | |
2763 | Iterator i; | |
2764 | uint64_t m; | |
2765 | Object *o; | |
2766 | size_t sz; | |
2767 | bool found; | |
2768 | ||
2769 | f = j->fields_file; | |
2770 | ||
2771 | if (j->fields_offset == 0) { | |
2772 | bool eof = false; | |
2773 | ||
2774 | /* We are not yet positioned at any field. Let's pick the first one */ | |
2775 | r = journal_file_map_field_hash_table(f); | |
2776 | if (r < 0) | |
2777 | return r; | |
2778 | ||
2779 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
2780 | for (;;) { | |
2781 | if (j->fields_hash_table_index >= m) { | |
2782 | /* Reached the end of the hash table, go to the next file. */ | |
2783 | eof = true; | |
2784 | break; | |
2785 | } | |
2786 | ||
2787 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
2788 | ||
2789 | if (j->fields_offset != 0) | |
2790 | break; | |
2791 | ||
2792 | /* Empty hash table bucket, go to next one */ | |
2793 | j->fields_hash_table_index++; | |
2794 | } | |
2795 | ||
2796 | if (eof) { | |
2797 | /* Proceed with next file */ | |
2798 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
2799 | if (!j->fields_file) { | |
2800 | *field = NULL; | |
2801 | return 0; | |
2802 | } | |
2803 | ||
2804 | j->fields_offset = 0; | |
2805 | j->fields_hash_table_index = 0; | |
2806 | continue; | |
2807 | } | |
2808 | ||
2809 | } else { | |
2810 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
2811 | ||
2812 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
2813 | if (r < 0) | |
2814 | return r; | |
2815 | ||
2816 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
2817 | if (j->fields_offset == 0) { | |
2818 | /* Reached the end of the hash table chain */ | |
2819 | j->fields_hash_table_index++; | |
2820 | continue; | |
2821 | } | |
2822 | } | |
2823 | ||
1f133e0d | 2824 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
2825 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
2826 | if (r < 0) | |
2827 | return r; | |
2828 | ||
2829 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
2830 | if (o->object.type != OBJECT_FIELD) { | |
2831 | log_debug("%s:offset " OFSfmt ": object has type %i, expected %i", f->path, j->fields_offset, o->object.type, OBJECT_FIELD); | |
2832 | return -EBADMSG; | |
2833 | } | |
2834 | ||
2835 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
2836 | ||
2837 | /* Let's see if we already returned this field name before. */ | |
2838 | found = false; | |
2839 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { | |
2840 | if (of == f) | |
2841 | break; | |
2842 | ||
2843 | /* Skip this file it didn't have any fields indexed */ | |
2844 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
2845 | continue; | |
2846 | ||
2847 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, le64toh(o->field.hash), NULL, NULL); | |
2848 | if (r < 0) | |
2849 | return r; | |
2850 | if (r > 0) { | |
2851 | found = true; | |
2852 | break; | |
2853 | } | |
2854 | } | |
2855 | ||
2856 | if (found) | |
2857 | continue; | |
2858 | ||
2859 | /* Check if this is really a valid string containing no NUL byte */ | |
2860 | if (memchr(o->field.payload, 0, sz)) | |
2861 | return -EBADMSG; | |
2862 | ||
2863 | if (sz > j->data_threshold) | |
2864 | sz = j->data_threshold; | |
2865 | ||
2866 | if (!GREEDY_REALLOC(j->fields_buffer, j->fields_buffer_allocated, sz + 1)) | |
2867 | return -ENOMEM; | |
2868 | ||
2869 | memcpy(j->fields_buffer, o->field.payload, sz); | |
2870 | j->fields_buffer[sz] = 0; | |
2871 | ||
2872 | if (!field_is_valid(j->fields_buffer)) | |
2873 | return -EBADMSG; | |
2874 | ||
2875 | *field = j->fields_buffer; | |
2876 | return 1; | |
2877 | } | |
2878 | } | |
2879 | ||
2880 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
2881 | if (!j) | |
2882 | return; | |
2883 | ||
2884 | j->fields_file = NULL; | |
2885 | j->fields_hash_table_index = 0; | |
2886 | j->fields_offset = 0; | |
2887 | j->fields_file_lost = false; | |
2888 | } | |
2889 | ||
85210bff | 2890 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
2891 | assert_return(j, -EINVAL); |
2892 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2893 | |
2894 | return !j->on_network; | |
2895 | } | |
d4205751 LP |
2896 | |
2897 | static char *lookup_field(const char *field, void *userdata) { | |
2898 | sd_journal *j = userdata; | |
2899 | const void *data; | |
2900 | size_t size, d; | |
2901 | int r; | |
2902 | ||
2903 | assert(field); | |
2904 | assert(j); | |
2905 | ||
2906 | r = sd_journal_get_data(j, field, &data, &size); | |
2907 | if (r < 0 || | |
2908 | size > REPLACE_VAR_MAX) | |
2909 | return strdup(field); | |
2910 | ||
2911 | d = strlen(field) + 1; | |
2912 | ||
2913 | return strndup((const char*) data + d, size - d); | |
2914 | } | |
2915 | ||
2916 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2917 | const void *data; | |
2918 | size_t size; | |
2919 | sd_id128_t id; | |
2920 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2921 | char *t; | |
2922 | int r; | |
2923 | ||
1ae464e0 TA |
2924 | assert_return(j, -EINVAL); |
2925 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2926 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2927 | |
2928 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2929 | if (r < 0) | |
2930 | return r; | |
2931 | ||
2932 | cid = strndup((const char*) data + 11, size - 11); | |
2933 | if (!cid) | |
2934 | return -ENOMEM; | |
2935 | ||
2936 | r = sd_id128_from_string(cid, &id); | |
2937 | if (r < 0) | |
2938 | return r; | |
2939 | ||
844ec79b | 2940 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2941 | if (r < 0) |
2942 | return r; | |
2943 | ||
2944 | t = replace_var(text, lookup_field, j); | |
2945 | if (!t) | |
2946 | return -ENOMEM; | |
2947 | ||
2948 | *ret = t; | |
2949 | return 0; | |
2950 | } | |
8f1e860f LP |
2951 | |
2952 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2953 | assert_return(ret, -EINVAL); |
8f1e860f | 2954 | |
844ec79b | 2955 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2956 | } |
93b73b06 LP |
2957 | |
2958 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2959 | assert_return(j, -EINVAL); |
2960 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2961 | |
2962 | j->data_threshold = sz; | |
2963 | return 0; | |
2964 | } | |
2965 | ||
2966 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2967 | assert_return(j, -EINVAL); |
2968 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2969 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2970 | |
2971 | *sz = j->data_threshold; | |
2972 | return 0; | |
2973 | } | |
39fd5b08 JS |
2974 | |
2975 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
2976 | assert_return(j, -EINVAL); | |
2977 | ||
2978 | return j->has_runtime_files; | |
2979 | } | |
2980 | ||
2981 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
2982 | assert_return(j, -EINVAL); | |
2983 | ||
2984 | return j->has_persistent_files; | |
2985 | } |