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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
87d2c1ff LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2011 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
87d2c1ff LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
87d2c1ff | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
87d2c1ff | 21 | #include <errno.h> |
87d2c1ff | 22 | #include <fcntl.h> |
82e24b00 | 23 | #include <inttypes.h> |
07630cea LP |
24 | #include <linux/magic.h> |
25 | #include <poll.h> | |
3fbf9cbb | 26 | #include <stddef.h> |
50f20cfd | 27 | #include <sys/inotify.h> |
85210bff | 28 | #include <sys/vfs.h> |
07630cea | 29 | #include <unistd.h> |
87d2c1ff LP |
30 | |
31 | #include "sd-journal.h" | |
c004493c | 32 | |
b5efdb8a | 33 | #include "alloc-util.h" |
07630cea LP |
34 | #include "catalog.h" |
35 | #include "compress.h" | |
a0956174 | 36 | #include "dirent-util.h" |
3ffd4af2 | 37 | #include "fd-util.h" |
07630cea | 38 | #include "fileio.h" |
f97b34a6 | 39 | #include "format-util.h" |
77601719 | 40 | #include "fs-util.h" |
07630cea LP |
41 | #include "hashmap.h" |
42 | #include "hostname-util.h" | |
a9be0692 | 43 | #include "id128-util.h" |
c004493c | 44 | #include "io-util.h" |
87d2c1ff | 45 | #include "journal-def.h" |
cec736d2 | 46 | #include "journal-file.h" |
07630cea | 47 | #include "journal-internal.h" |
cec736d2 | 48 | #include "list.h" |
de7b95cd | 49 | #include "lookup3.h" |
85210bff | 50 | #include "missing.h" |
07630cea | 51 | #include "path-util.h" |
dccca82b | 52 | #include "process-util.h" |
d4205751 | 53 | #include "replace-var.h" |
15a5e950 | 54 | #include "stat-util.h" |
77f9fa3b | 55 | #include "stat-util.h" |
15a5e950 | 56 | #include "stdio-util.h" |
07630cea LP |
57 | #include "string-util.h" |
58 | #include "strv.h" | |
87d2c1ff | 59 | |
9e8abdf0 LP |
60 | #define JOURNAL_FILES_MAX 7168 |
61 | ||
85210bff LP |
62 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
63 | ||
d4205751 LP |
64 | #define REPLACE_VAR_MAX 256 |
65 | ||
93b73b06 LP |
66 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
67 | ||
a9a245c1 ZJS |
68 | static void remove_file_real(sd_journal *j, JournalFile *f); |
69 | ||
a65f06bb ZJS |
70 | static bool journal_pid_changed(sd_journal *j) { |
71 | assert(j); | |
72 | ||
73 | /* We don't support people creating a journal object and | |
74 | * keeping it around over a fork(). Let's complain. */ | |
75 | ||
df0ff127 | 76 | return j->original_pid != getpid_cached(); |
a65f06bb ZJS |
77 | } |
78 | ||
5768d259 LP |
79 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
80 | char *copy; | |
3ac251b8 LP |
81 | int k; |
82 | ||
5768d259 LP |
83 | /* Memorize an error we encountered, and store which |
84 | * file/directory it was generated from. Note that we store | |
85 | * only *one* path per error code, as the error code is the | |
86 | * key into the hashmap, and the path is the value. This means | |
87 | * we keep track only of all error kinds, but not of all error | |
88 | * locations. This has the benefit that the hashmap cannot | |
89 | * grow beyond bounds. | |
90 | * | |
91 | * We return an error here only if we didn't manage to | |
92 | * memorize the real error. */ | |
93 | ||
6fe391c5 ZJS |
94 | if (r >= 0) |
95 | return r; | |
96 | ||
5768d259 | 97 | k = hashmap_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
98 | if (k < 0) |
99 | return k; | |
100 | ||
5768d259 LP |
101 | if (path) { |
102 | copy = strdup(path); | |
103 | if (!copy) | |
104 | return -ENOMEM; | |
105 | } else | |
106 | copy = NULL; | |
107 | ||
108 | k = hashmap_put(j->errors, INT_TO_PTR(r), copy); | |
109 | if (k < 0) { | |
110 | free(copy); | |
111 | ||
112 | if (k == -EEXIST) | |
113 | return 0; | |
114 | ||
115 | return k; | |
116 | } | |
117 | ||
118 | return 0; | |
6fe391c5 ZJS |
119 | } |
120 | ||
de190aef | 121 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
122 | Iterator i; |
123 | JournalFile *f; | |
124 | ||
125 | assert(j); | |
126 | ||
127 | j->current_file = NULL; | |
128 | j->current_field = 0; | |
129 | ||
c1f906bd | 130 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 131 | journal_file_reset_location(f); |
8f9b6cd9 LP |
132 | } |
133 | ||
de190aef LP |
134 | static void reset_location(sd_journal *j) { |
135 | assert(j); | |
136 | ||
137 | detach_location(j); | |
138 | zero(j->current_location); | |
139 | } | |
140 | ||
a87247dd | 141 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 142 | assert(l); |
3742095b | 143 | assert(IN_SET(type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
144 | assert(f); |
145 | assert(o->object.type == OBJECT_ENTRY); | |
146 | ||
a87247dd | 147 | l->type = type; |
de190aef LP |
148 | l->seqnum = le64toh(o->entry.seqnum); |
149 | l->seqnum_id = f->header->seqnum_id; | |
150 | l->realtime = le64toh(o->entry.realtime); | |
151 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 152 | l->boot_id = o->entry.boot_id; |
de190aef LP |
153 | l->xor_hash = le64toh(o->entry.xor_hash); |
154 | ||
155 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
156 | } | |
157 | ||
1eb6332d | 158 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
159 | assert(j); |
160 | assert(f); | |
161 | assert(o); | |
162 | ||
1eb6332d | 163 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
164 | |
165 | j->current_file = f; | |
166 | j->current_field = 0; | |
167 | ||
6573ef05 MS |
168 | /* Let f know its candidate entry was picked. */ |
169 | assert(f->location_type == LOCATION_SEEK); | |
170 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
171 | } |
172 | ||
cbdca852 LP |
173 | static int match_is_valid(const void *data, size_t size) { |
174 | const char *b, *p; | |
175 | ||
176 | assert(data); | |
177 | ||
178 | if (size < 2) | |
179 | return false; | |
180 | ||
181 | if (startswith(data, "__")) | |
182 | return false; | |
183 | ||
184 | b = data; | |
185 | for (p = b; p < b + size; p++) { | |
186 | ||
187 | if (*p == '=') | |
188 | return p > b; | |
189 | ||
190 | if (*p == '_') | |
191 | continue; | |
192 | ||
193 | if (*p >= 'A' && *p <= 'Z') | |
194 | continue; | |
195 | ||
196 | if (*p >= '0' && *p <= '9') | |
197 | continue; | |
198 | ||
199 | return false; | |
200 | } | |
201 | ||
202 | return false; | |
203 | } | |
204 | ||
205 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
206 | const uint8_t *a = _a, *b = _b; |
207 | size_t j; | |
de190aef LP |
208 | |
209 | for (j = 0; j < s && j < t; j++) { | |
210 | ||
de190aef | 211 | if (a[j] != b[j]) |
cbdca852 | 212 | return false; |
de190aef | 213 | |
cbdca852 LP |
214 | if (a[j] == '=') |
215 | return true; | |
de190aef LP |
216 | } |
217 | ||
bc302926 | 218 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
219 | } |
220 | ||
221 | static Match *match_new(Match *p, MatchType t) { | |
222 | Match *m; | |
223 | ||
224 | m = new0(Match, 1); | |
225 | if (!m) | |
226 | return NULL; | |
227 | ||
228 | m->type = t; | |
229 | ||
230 | if (p) { | |
231 | m->parent = p; | |
71fda00f | 232 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
233 | } |
234 | ||
235 | return m; | |
236 | } | |
237 | ||
238 | static void match_free(Match *m) { | |
239 | assert(m); | |
240 | ||
241 | while (m->matches) | |
242 | match_free(m->matches); | |
243 | ||
244 | if (m->parent) | |
71fda00f | 245 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
246 | |
247 | free(m->data); | |
248 | free(m); | |
249 | } | |
250 | ||
251 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 252 | if (!m || m->matches) |
cbdca852 LP |
253 | return; |
254 | ||
255 | match_free(m); | |
de190aef LP |
256 | } |
257 | ||
a5344d2c | 258 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 259 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 260 | le64_t le_hash; |
87d2c1ff | 261 | |
1ae464e0 TA |
262 | assert_return(j, -EINVAL); |
263 | assert_return(!journal_pid_changed(j), -ECHILD); | |
264 | assert_return(data, -EINVAL); | |
cbdca852 LP |
265 | |
266 | if (size == 0) | |
267 | size = strlen(data); | |
268 | ||
1ae464e0 | 269 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 270 | |
cd34b3c6 HH |
271 | /* level 0: AND term |
272 | * level 1: OR terms | |
273 | * level 2: AND terms | |
274 | * level 3: OR terms | |
275 | * level 4: concrete matches */ | |
cbdca852 LP |
276 | |
277 | if (!j->level0) { | |
cd34b3c6 | 278 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
279 | if (!j->level0) |
280 | return -ENOMEM; | |
281 | } | |
282 | ||
283 | if (!j->level1) { | |
cd34b3c6 | 284 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
285 | if (!j->level1) |
286 | return -ENOMEM; | |
287 | } | |
288 | ||
cd34b3c6 HH |
289 | if (!j->level2) { |
290 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
291 | if (!j->level2) | |
292 | return -ENOMEM; | |
293 | } | |
294 | ||
295 | assert(j->level0->type == MATCH_AND_TERM); | |
296 | assert(j->level1->type == MATCH_OR_TERM); | |
297 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 298 | |
de190aef LP |
299 | le_hash = htole64(hash64(data, size)); |
300 | ||
cd34b3c6 HH |
301 | LIST_FOREACH(matches, l3, j->level2->matches) { |
302 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 303 | |
cd34b3c6 HH |
304 | LIST_FOREACH(matches, l4, l3->matches) { |
305 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 306 | |
cbdca852 LP |
307 | /* Exactly the same match already? Then ignore |
308 | * this addition */ | |
cd34b3c6 HH |
309 | if (l4->le_hash == le_hash && |
310 | l4->size == size && | |
311 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
312 | return 0; |
313 | ||
314 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
315 | if (same_field(data, size, l4->data, l4->size)) { |
316 | add_here = l3; | |
cbdca852 LP |
317 | break; |
318 | } | |
319 | } | |
320 | ||
321 | if (add_here) | |
322 | break; | |
de190aef LP |
323 | } |
324 | ||
cbdca852 | 325 | if (!add_here) { |
cd34b3c6 | 326 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
327 | if (!add_here) |
328 | goto fail; | |
329 | } | |
330 | ||
331 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 332 | if (!m) |
cbdca852 | 333 | goto fail; |
87d2c1ff | 334 | |
cbdca852 | 335 | m->le_hash = le_hash; |
1cc101f1 | 336 | m->size = size; |
cbdca852 LP |
337 | m->data = memdup(data, size); |
338 | if (!m->data) | |
339 | goto fail; | |
340 | ||
341 | detach_location(j); | |
342 | ||
343 | return 0; | |
344 | ||
345 | fail: | |
c5a10d9c ZJS |
346 | match_free_if_empty(add_here); |
347 | match_free_if_empty(j->level2); | |
348 | match_free_if_empty(j->level1); | |
349 | match_free_if_empty(j->level0); | |
cbdca852 LP |
350 | |
351 | return -ENOMEM; | |
352 | } | |
353 | ||
cd34b3c6 | 354 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
355 | assert_return(j, -EINVAL); |
356 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 357 | |
cbdca852 LP |
358 | if (!j->level0) |
359 | return 0; | |
360 | ||
361 | if (!j->level1) | |
362 | return 0; | |
363 | ||
364 | if (!j->level1->matches) | |
365 | return 0; | |
366 | ||
cd34b3c6 HH |
367 | j->level1 = NULL; |
368 | j->level2 = NULL; | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
374 | assert_return(j, -EINVAL); |
375 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
376 | |
377 | if (!j->level0) | |
378 | return 0; | |
379 | ||
380 | if (!j->level1) | |
381 | return 0; | |
382 | ||
383 | if (!j->level2) | |
384 | return 0; | |
385 | ||
386 | if (!j->level2->matches) | |
387 | return 0; | |
cbdca852 | 388 | |
cd34b3c6 | 389 | j->level2 = NULL; |
cbdca852 LP |
390 | return 0; |
391 | } | |
392 | ||
393 | static char *match_make_string(Match *m) { | |
6b430fdb | 394 | char *p = NULL, *r; |
cbdca852 LP |
395 | Match *i; |
396 | bool enclose = false; | |
397 | ||
398 | if (!m) | |
4ad16808 | 399 | return strdup("none"); |
cbdca852 LP |
400 | |
401 | if (m->type == MATCH_DISCRETE) | |
402 | return strndup(m->data, m->size); | |
403 | ||
cbdca852 LP |
404 | LIST_FOREACH(matches, i, m->matches) { |
405 | char *t, *k; | |
406 | ||
407 | t = match_make_string(i); | |
6b430fdb ZJS |
408 | if (!t) |
409 | return mfree(p); | |
cbdca852 LP |
410 | |
411 | if (p) { | |
605405c6 | 412 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t); |
cbdca852 LP |
413 | free(p); |
414 | free(t); | |
415 | ||
416 | if (!k) | |
417 | return NULL; | |
418 | ||
419 | p = k; | |
420 | ||
421 | enclose = true; | |
bc302926 | 422 | } else |
cbdca852 | 423 | p = t; |
87d2c1ff LP |
424 | } |
425 | ||
cbdca852 | 426 | if (enclose) { |
605405c6 | 427 | r = strjoin("(", p, ")"); |
cbdca852 LP |
428 | free(p); |
429 | return r; | |
430 | } | |
87d2c1ff | 431 | |
cbdca852 LP |
432 | return p; |
433 | } | |
de7b95cd | 434 | |
cbdca852 LP |
435 | char *journal_make_match_string(sd_journal *j) { |
436 | assert(j); | |
8f9b6cd9 | 437 | |
cbdca852 | 438 | return match_make_string(j->level0); |
87d2c1ff LP |
439 | } |
440 | ||
a5344d2c LP |
441 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
442 | if (!j) | |
443 | return; | |
87d2c1ff | 444 | |
cbdca852 LP |
445 | if (j->level0) |
446 | match_free(j->level0); | |
de7b95cd | 447 | |
cd34b3c6 | 448 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 449 | |
de190aef | 450 | detach_location(j); |
87d2c1ff LP |
451 | } |
452 | ||
487d3720 MS |
453 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
454 | assert(f); | |
de190aef | 455 | assert(l); |
487d3720 | 456 | assert(f->location_type == LOCATION_SEEK); |
4c701096 | 457 | assert(IN_SET(l->type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
458 | |
459 | if (l->monotonic_set && | |
487d3720 | 460 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 461 | l->realtime_set && |
487d3720 | 462 | f->current_realtime == l->realtime && |
de190aef | 463 | l->xor_hash_set && |
487d3720 | 464 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
465 | return 0; |
466 | ||
467 | if (l->seqnum_set && | |
487d3720 | 468 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 469 | |
487d3720 | 470 | if (f->current_seqnum < l->seqnum) |
de190aef | 471 | return -1; |
487d3720 | 472 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
473 | return 1; |
474 | } | |
475 | ||
476 | if (l->monotonic_set && | |
487d3720 | 477 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 478 | |
487d3720 | 479 | if (f->current_monotonic < l->monotonic) |
de190aef | 480 | return -1; |
487d3720 | 481 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
482 | return 1; |
483 | } | |
484 | ||
485 | if (l->realtime_set) { | |
486 | ||
487d3720 | 487 | if (f->current_realtime < l->realtime) |
de190aef | 488 | return -1; |
487d3720 | 489 | if (f->current_realtime > l->realtime) |
de190aef LP |
490 | return 1; |
491 | } | |
492 | ||
493 | if (l->xor_hash_set) { | |
de190aef | 494 | |
487d3720 | 495 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 496 | return -1; |
487d3720 | 497 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
498 | return 1; |
499 | } | |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
cbdca852 LP |
504 | static int next_for_match( |
505 | sd_journal *j, | |
506 | Match *m, | |
507 | JournalFile *f, | |
508 | uint64_t after_offset, | |
509 | direction_t direction, | |
510 | Object **ret, | |
511 | uint64_t *offset) { | |
512 | ||
de7b95cd | 513 | int r; |
cbdca852 LP |
514 | uint64_t np = 0; |
515 | Object *n; | |
de7b95cd LP |
516 | |
517 | assert(j); | |
cbdca852 LP |
518 | assert(m); |
519 | assert(f); | |
de7b95cd | 520 | |
cbdca852 LP |
521 | if (m->type == MATCH_DISCRETE) { |
522 | uint64_t dp; | |
de190aef | 523 | |
cbdca852 | 524 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
525 | if (r <= 0) |
526 | return r; | |
527 | ||
cbdca852 | 528 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 529 | |
cbdca852 LP |
530 | } else if (m->type == MATCH_OR_TERM) { |
531 | Match *i; | |
de7b95cd | 532 | |
cbdca852 | 533 | /* Find the earliest match beyond after_offset */ |
de190aef | 534 | |
cbdca852 LP |
535 | LIST_FOREACH(matches, i, m->matches) { |
536 | uint64_t cp; | |
de190aef | 537 | |
cbdca852 | 538 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
539 | if (r < 0) |
540 | return r; | |
cbdca852 | 541 | else if (r > 0) { |
bc302926 | 542 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
543 | np = cp; |
544 | } | |
545 | } | |
b4e5f920 | 546 | |
bc302926 ZJS |
547 | if (np == 0) |
548 | return 0; | |
549 | ||
cbdca852 | 550 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 551 | Match *i, *last_moved; |
de190aef | 552 | |
cbdca852 | 553 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 554 | * this until we find an offset that matches for all |
cbdca852 | 555 | * matches. */ |
de190aef | 556 | |
cbdca852 LP |
557 | if (!m->matches) |
558 | return 0; | |
de7b95cd | 559 | |
2bc8ca0c ZJS |
560 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
561 | if (r <= 0) | |
562 | return r; | |
de190aef | 563 | |
2bc8ca0c ZJS |
564 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
565 | last_moved = m->matches; | |
de190aef | 566 | |
2bc8ca0c ZJS |
567 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
568 | uint64_t cp; | |
de190aef | 569 | |
2bc8ca0c ZJS |
570 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
571 | if (r <= 0) | |
572 | return r; | |
de190aef | 573 | |
2bc8ca0c ZJS |
574 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
575 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
576 | np = cp; | |
577 | last_moved = i; | |
de190aef | 578 | } |
2bc8ca0c | 579 | } |
cbdca852 | 580 | } |
de190aef | 581 | |
bc302926 | 582 | assert(np > 0); |
de190aef | 583 | |
cbdca852 LP |
584 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
585 | if (r < 0) | |
586 | return r; | |
de7b95cd | 587 | |
de190aef | 588 | if (ret) |
cbdca852 | 589 | *ret = n; |
de190aef | 590 | if (offset) |
cbdca852 | 591 | *offset = np; |
de190aef LP |
592 | |
593 | return 1; | |
594 | } | |
595 | ||
cbdca852 LP |
596 | static int find_location_for_match( |
597 | sd_journal *j, | |
598 | Match *m, | |
599 | JournalFile *f, | |
600 | direction_t direction, | |
601 | Object **ret, | |
602 | uint64_t *offset) { | |
603 | ||
de190aef | 604 | int r; |
de190aef LP |
605 | |
606 | assert(j); | |
cbdca852 | 607 | assert(m); |
de190aef | 608 | assert(f); |
de190aef | 609 | |
cbdca852 LP |
610 | if (m->type == MATCH_DISCRETE) { |
611 | uint64_t dp; | |
de190aef | 612 | |
cbdca852 | 613 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
614 | if (r <= 0) |
615 | return r; | |
616 | ||
cbdca852 | 617 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 618 | |
cbdca852 LP |
619 | if (j->current_location.type == LOCATION_HEAD) |
620 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
621 | if (j->current_location.type == LOCATION_TAIL) | |
622 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
623 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
624 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
625 | if (j->current_location.monotonic_set) { | |
626 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
627 | if (r != -ENOENT) | |
628 | return r; | |
629 | } | |
630 | if (j->current_location.realtime_set) | |
631 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 632 | |
cbdca852 | 633 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 634 | |
cbdca852 LP |
635 | } else if (m->type == MATCH_OR_TERM) { |
636 | uint64_t np = 0; | |
637 | Object *n; | |
638 | Match *i; | |
de7b95cd | 639 | |
cbdca852 | 640 | /* Find the earliest match */ |
de7b95cd | 641 | |
cbdca852 LP |
642 | LIST_FOREACH(matches, i, m->matches) { |
643 | uint64_t cp; | |
644 | ||
645 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
646 | if (r < 0) | |
647 | return r; | |
648 | else if (r > 0) { | |
649 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
650 | np = cp; | |
de190aef | 651 | } |
cbdca852 | 652 | } |
de190aef | 653 | |
cbdca852 LP |
654 | if (np == 0) |
655 | return 0; | |
de7b95cd | 656 | |
cbdca852 LP |
657 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
658 | if (r < 0) | |
659 | return r; | |
de7b95cd | 660 | |
cbdca852 LP |
661 | if (ret) |
662 | *ret = n; | |
663 | if (offset) | |
664 | *offset = np; | |
de190aef | 665 | |
cbdca852 | 666 | return 1; |
e892bd17 | 667 | |
cbdca852 LP |
668 | } else { |
669 | Match *i; | |
670 | uint64_t np = 0; | |
671 | ||
672 | assert(m->type == MATCH_AND_TERM); | |
673 | ||
674 | /* First jump to the last match, and then find the | |
675 | * next one where all matches match */ | |
676 | ||
677 | if (!m->matches) | |
678 | return 0; | |
679 | ||
680 | LIST_FOREACH(matches, i, m->matches) { | |
681 | uint64_t cp; | |
682 | ||
683 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
684 | if (r <= 0) | |
4b067dc9 LP |
685 | return r; |
686 | ||
bc302926 | 687 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 688 | np = cp; |
de7b95cd LP |
689 | } |
690 | ||
cbdca852 LP |
691 | return next_for_match(j, m, f, np, direction, ret, offset); |
692 | } | |
693 | } | |
de190aef | 694 | |
cbdca852 LP |
695 | static int find_location_with_matches( |
696 | sd_journal *j, | |
697 | JournalFile *f, | |
698 | direction_t direction, | |
699 | Object **ret, | |
700 | uint64_t *offset) { | |
701 | ||
702 | int r; | |
703 | ||
704 | assert(j); | |
705 | assert(f); | |
706 | assert(ret); | |
707 | assert(offset); | |
708 | ||
709 | if (!j->level0) { | |
710 | /* No matches is simple */ | |
711 | ||
712 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 713 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 714 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 715 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
716 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
717 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
718 | if (j->current_location.monotonic_set) { | |
719 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
720 | if (r != -ENOENT) | |
721 | return r; | |
de7b95cd | 722 | } |
cbdca852 LP |
723 | if (j->current_location.realtime_set) |
724 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 725 | |
f534928a | 726 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
727 | } else |
728 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
729 | } | |
de7b95cd | 730 | |
cbdca852 LP |
731 | static int next_with_matches( |
732 | sd_journal *j, | |
733 | JournalFile *f, | |
734 | direction_t direction, | |
735 | Object **ret, | |
736 | uint64_t *offset) { | |
737 | ||
cbdca852 LP |
738 | assert(j); |
739 | assert(f); | |
740 | assert(ret); | |
741 | assert(offset); | |
742 | ||
cbdca852 LP |
743 | /* No matches is easy. We simple advance the file |
744 | * pointer by one. */ | |
745 | if (!j->level0) | |
b29ddfcb | 746 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
747 | |
748 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 749 | * with an offset at least one step larger */ |
b29ddfcb MS |
750 | return next_for_match(j, j->level0, f, |
751 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
752 | : f->current_offset - 1, | |
753 | direction, ret, offset); | |
de7b95cd LP |
754 | } |
755 | ||
58439db4 | 756 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 757 | Object *c; |
6e693b42 | 758 | uint64_t cp, n_entries; |
cbdca852 | 759 | int r; |
de190aef LP |
760 | |
761 | assert(j); | |
762 | assert(f); | |
763 | ||
950c07d4 MS |
764 | n_entries = le64toh(f->header->n_entries); |
765 | ||
766 | /* If we hit EOF before, we don't need to look into this file again | |
767 | * unless direction changed or new entries appeared. */ | |
768 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
769 | n_entries == f->last_n_entries) | |
770 | return 0; | |
668c965a | 771 | |
950c07d4 MS |
772 | f->last_n_entries = n_entries; |
773 | ||
774 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
775 | /* LOCATION_SEEK here means we did the work in a previous |
776 | * iteration and the current location already points to a | |
777 | * candidate entry. */ | |
487d3720 MS |
778 | if (f->location_type != LOCATION_SEEK) { |
779 | r = next_with_matches(j, f, direction, &c, &cp); | |
780 | if (r <= 0) | |
781 | return r; | |
466ccd92 | 782 | |
950c07d4 | 783 | journal_file_save_location(f, c, cp); |
487d3720 | 784 | } |
de190aef | 785 | } else { |
950c07d4 MS |
786 | f->last_direction = direction; |
787 | ||
cbdca852 | 788 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
789 | if (r <= 0) |
790 | return r; | |
487d3720 | 791 | |
950c07d4 | 792 | journal_file_save_location(f, c, cp); |
de190aef LP |
793 | } |
794 | ||
bc302926 | 795 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
796 | * that is actually different from what we were previously |
797 | * looking at. This is necessary to handle entries which exist | |
798 | * in two (or more) journal files, and which shall all be | |
799 | * suppressed but one. */ | |
800 | ||
de190aef LP |
801 | for (;;) { |
802 | bool found; | |
803 | ||
804 | if (j->current_location.type == LOCATION_DISCRETE) { | |
805 | int k; | |
806 | ||
487d3720 | 807 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
808 | |
809 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
810 | } else |
811 | found = true; | |
812 | ||
487d3720 | 813 | if (found) |
de190aef | 814 | return 1; |
de190aef LP |
815 | |
816 | r = next_with_matches(j, f, direction, &c, &cp); | |
817 | if (r <= 0) | |
818 | return r; | |
487d3720 | 819 | |
950c07d4 | 820 | journal_file_save_location(f, c, cp); |
de190aef LP |
821 | } |
822 | } | |
823 | ||
e892bd17 | 824 | static int real_journal_next(sd_journal *j, direction_t direction) { |
5d4ba7f2 VC |
825 | JournalFile *new_file = NULL; |
826 | unsigned i, n_files; | |
827 | const void **files; | |
a002d44b | 828 | Object *o; |
87d2c1ff LP |
829 | int r; |
830 | ||
1ae464e0 TA |
831 | assert_return(j, -EINVAL); |
832 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 833 | |
5d4ba7f2 VC |
834 | r = iterated_cache_get(j->files_cache, NULL, &files, &n_files); |
835 | if (r < 0) | |
836 | return r; | |
837 | ||
838 | for (i = 0; i < n_files; i++) { | |
839 | JournalFile *f = (JournalFile *)files[i]; | |
de190aef | 840 | bool found; |
87d2c1ff | 841 | |
58439db4 | 842 | r = next_beyond_location(j, f, direction); |
e590af26 | 843 | if (r < 0) { |
da927ba9 | 844 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 845 | remove_file_real(j, f); |
e590af26 | 846 | continue; |
6573ef05 MS |
847 | } else if (r == 0) { |
848 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 849 | continue; |
6573ef05 | 850 | } |
87d2c1ff | 851 | |
468b21de | 852 | if (!new_file) |
de190aef LP |
853 | found = true; |
854 | else { | |
855 | int k; | |
856 | ||
d8ae66d7 | 857 | k = journal_file_compare_locations(f, new_file); |
de190aef | 858 | |
bc302926 | 859 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
860 | } |
861 | ||
e499c999 | 862 | if (found) |
468b21de | 863 | new_file = f; |
87d2c1ff LP |
864 | } |
865 | ||
468b21de | 866 | if (!new_file) |
de190aef | 867 | return 0; |
ae2cc8ef | 868 | |
e499c999 | 869 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
870 | if (r < 0) |
871 | return r; | |
872 | ||
1eb6332d | 873 | set_location(j, new_file, o); |
ae2cc8ef | 874 | |
de190aef LP |
875 | return 1; |
876 | } | |
ae2cc8ef | 877 | |
a5344d2c | 878 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
879 | return real_journal_next(j, DIRECTION_DOWN); |
880 | } | |
ae2cc8ef | 881 | |
a5344d2c | 882 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
883 | return real_journal_next(j, DIRECTION_UP); |
884 | } | |
ae2cc8ef | 885 | |
6f003b43 | 886 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 887 | int c = 0, r; |
ae2cc8ef | 888 | |
1ae464e0 TA |
889 | assert_return(j, -EINVAL); |
890 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 891 | |
6f003b43 LP |
892 | if (skip == 0) { |
893 | /* If this is not a discrete skip, then at least | |
894 | * resolve the current location */ | |
04884354 LK |
895 | if (j->current_location.type != LOCATION_DISCRETE) { |
896 | r = real_journal_next(j, direction); | |
897 | if (r < 0) | |
898 | return r; | |
899 | } | |
6f003b43 LP |
900 | |
901 | return 0; | |
902 | } | |
903 | ||
904 | do { | |
905 | r = real_journal_next(j, direction); | |
de190aef LP |
906 | if (r < 0) |
907 | return r; | |
908 | ||
909 | if (r == 0) | |
910 | return c; | |
911 | ||
912 | skip--; | |
913 | c++; | |
6f003b43 | 914 | } while (skip > 0); |
87d2c1ff | 915 | |
de190aef | 916 | return c; |
87d2c1ff LP |
917 | } |
918 | ||
6f003b43 LP |
919 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
920 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
921 | } | |
de190aef | 922 | |
6f003b43 LP |
923 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
924 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
925 | } |
926 | ||
a5344d2c | 927 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 928 | Object *o; |
87d2c1ff | 929 | int r; |
3fbf9cbb | 930 | char bid[33], sid[33]; |
87d2c1ff | 931 | |
1ae464e0 TA |
932 | assert_return(j, -EINVAL); |
933 | assert_return(!journal_pid_changed(j), -ECHILD); | |
934 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 935 | |
3fbf9cbb LP |
936 | if (!j->current_file || j->current_file->current_offset <= 0) |
937 | return -EADDRNOTAVAIL; | |
87d2c1ff | 938 | |
de190aef | 939 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
940 | if (r < 0) |
941 | return r; | |
942 | ||
3fbf9cbb LP |
943 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
944 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 945 | |
3fbf9cbb | 946 | if (asprintf(cursor, |
507f22bd ZJS |
947 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
948 | sid, le64toh(o->entry.seqnum), | |
949 | bid, le64toh(o->entry.monotonic), | |
950 | le64toh(o->entry.realtime), | |
951 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 952 | return -ENOMEM; |
87d2c1ff | 953 | |
6f47ad30 | 954 | return 0; |
87d2c1ff LP |
955 | } |
956 | ||
a5344d2c | 957 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 958 | const char *word, *state; |
de190aef | 959 | size_t l; |
de190aef LP |
960 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
961 | bool | |
962 | seqnum_id_set = false, | |
963 | seqnum_set = false, | |
964 | boot_id_set = false, | |
965 | monotonic_set = false, | |
966 | realtime_set = false, | |
967 | xor_hash_set = false; | |
968 | sd_id128_t seqnum_id, boot_id; | |
969 | ||
1ae464e0 TA |
970 | assert_return(j, -EINVAL); |
971 | assert_return(!journal_pid_changed(j), -ECHILD); | |
972 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 973 | |
a2a5291b | 974 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
975 | char *item; |
976 | int k = 0; | |
977 | ||
a2a5291b | 978 | if (l < 2 || word[1] != '=') |
de190aef LP |
979 | return -EINVAL; |
980 | ||
a2a5291b | 981 | item = strndup(word, l); |
de190aef LP |
982 | if (!item) |
983 | return -ENOMEM; | |
984 | ||
a2a5291b | 985 | switch (word[0]) { |
de190aef LP |
986 | |
987 | case 's': | |
988 | seqnum_id_set = true; | |
be3ea5ea | 989 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
990 | break; |
991 | ||
992 | case 'i': | |
993 | seqnum_set = true; | |
be3ea5ea | 994 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
995 | k = -EINVAL; |
996 | break; | |
997 | ||
998 | case 'b': | |
999 | boot_id_set = true; | |
be3ea5ea | 1000 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
1001 | break; |
1002 | ||
1003 | case 'm': | |
1004 | monotonic_set = true; | |
be3ea5ea | 1005 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
1006 | k = -EINVAL; |
1007 | break; | |
1008 | ||
1009 | case 't': | |
1010 | realtime_set = true; | |
be3ea5ea | 1011 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1012 | k = -EINVAL; |
1013 | break; | |
1014 | ||
1015 | case 'x': | |
1016 | xor_hash_set = true; | |
be3ea5ea | 1017 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1018 | k = -EINVAL; |
1019 | break; | |
1020 | } | |
1021 | ||
1022 | free(item); | |
1023 | ||
1024 | if (k < 0) | |
1025 | return k; | |
1026 | } | |
1027 | ||
1028 | if ((!seqnum_set || !seqnum_id_set) && | |
1029 | (!monotonic_set || !boot_id_set) && | |
1030 | !realtime_set) | |
1031 | return -EINVAL; | |
1032 | ||
1033 | reset_location(j); | |
1034 | ||
a87247dd | 1035 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1036 | |
1037 | if (realtime_set) { | |
1038 | j->current_location.realtime = (uint64_t) realtime; | |
1039 | j->current_location.realtime_set = true; | |
1040 | } | |
1041 | ||
1042 | if (seqnum_set && seqnum_id_set) { | |
1043 | j->current_location.seqnum = (uint64_t) seqnum; | |
1044 | j->current_location.seqnum_id = seqnum_id; | |
1045 | j->current_location.seqnum_set = true; | |
1046 | } | |
1047 | ||
1048 | if (monotonic_set && boot_id_set) { | |
1049 | j->current_location.monotonic = (uint64_t) monotonic; | |
1050 | j->current_location.boot_id = boot_id; | |
1051 | j->current_location.monotonic_set = true; | |
1052 | } | |
1053 | ||
1054 | if (xor_hash_set) { | |
1055 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1056 | j->current_location.xor_hash_set = true; | |
1057 | } | |
1058 | ||
1059 | return 0; | |
1060 | } | |
1061 | ||
c6511e85 LP |
1062 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1063 | int r; | |
c6511e85 LP |
1064 | Object *o; |
1065 | ||
1ae464e0 TA |
1066 | assert_return(j, -EINVAL); |
1067 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1068 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1069 | |
1070 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1071 | return -EADDRNOTAVAIL; | |
1072 | ||
1073 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1074 | if (r < 0) | |
1075 | return r; | |
1076 | ||
9ed794a3 | 1077 | for (;;) { |
c6511e85 | 1078 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1079 | unsigned long long ll; |
7294bb5b | 1080 | sd_id128_t id; |
c6511e85 LP |
1081 | int k = 0; |
1082 | ||
7294bb5b SS |
1083 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1084 | if (r < 0) | |
1085 | return r; | |
c6511e85 | 1086 | |
7294bb5b SS |
1087 | if (r == 0) |
1088 | break; | |
c6511e85 | 1089 | |
7294bb5b SS |
1090 | if (strlen(item) < 2 || item[1] != '=') |
1091 | return -EINVAL; | |
1092 | ||
1093 | switch (item[0]) { | |
c6511e85 LP |
1094 | |
1095 | case 's': | |
1096 | k = sd_id128_from_string(item+2, &id); | |
1097 | if (k < 0) | |
1098 | return k; | |
1099 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1100 | return 0; | |
1101 | break; | |
1102 | ||
1103 | case 'i': | |
1104 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1105 | return -EINVAL; | |
1106 | if (ll != le64toh(o->entry.seqnum)) | |
1107 | return 0; | |
1108 | break; | |
1109 | ||
1110 | case 'b': | |
1111 | k = sd_id128_from_string(item+2, &id); | |
1112 | if (k < 0) | |
1113 | return k; | |
1114 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1115 | return 0; | |
1116 | break; | |
1117 | ||
1118 | case 'm': | |
1119 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1120 | return -EINVAL; | |
1121 | if (ll != le64toh(o->entry.monotonic)) | |
1122 | return 0; | |
1123 | break; | |
1124 | ||
1125 | case 't': | |
1126 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1127 | return -EINVAL; | |
1128 | if (ll != le64toh(o->entry.realtime)) | |
1129 | return 0; | |
1130 | break; | |
1131 | ||
1132 | case 'x': | |
1133 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1134 | return -EINVAL; | |
1135 | if (ll != le64toh(o->entry.xor_hash)) | |
1136 | return 0; | |
1137 | break; | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | return 1; | |
1142 | } | |
1143 | ||
a5344d2c | 1144 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1145 | assert_return(j, -EINVAL); |
1146 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1147 | |
1148 | reset_location(j); | |
a87247dd | 1149 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1150 | j->current_location.boot_id = boot_id; |
1151 | j->current_location.monotonic = usec; | |
1152 | j->current_location.monotonic_set = true; | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
a5344d2c | 1157 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1158 | assert_return(j, -EINVAL); |
1159 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1160 | |
1161 | reset_location(j); | |
a87247dd | 1162 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1163 | j->current_location.realtime = usec; |
1164 | j->current_location.realtime_set = true; | |
1165 | ||
1166 | return 0; | |
1167 | } | |
1168 | ||
a5344d2c | 1169 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1170 | assert_return(j, -EINVAL); |
1171 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1172 | |
1173 | reset_location(j); | |
1174 | j->current_location.type = LOCATION_HEAD; | |
1175 | ||
1176 | return 0; | |
1177 | } | |
1178 | ||
a5344d2c | 1179 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1180 | assert_return(j, -EINVAL); |
1181 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1182 | |
1183 | reset_location(j); | |
1184 | j->current_location.type = LOCATION_TAIL; | |
1185 | ||
1186 | return 0; | |
87d2c1ff LP |
1187 | } |
1188 | ||
85210bff | 1189 | static void check_network(sd_journal *j, int fd) { |
85210bff LP |
1190 | assert(j); |
1191 | ||
1192 | if (j->on_network) | |
1193 | return; | |
1194 | ||
77f9fa3b | 1195 | j->on_network = fd_is_network_fs(fd); |
85210bff LP |
1196 | } |
1197 | ||
a688baa8 ZJS |
1198 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1199 | const char *full, *tilded, *atted; | |
1200 | ||
63c372cb LP |
1201 | full = strjoina(prefix, ".journal"); |
1202 | tilded = strjoina(full, "~"); | |
1203 | atted = strjoina(prefix, "@"); | |
a688baa8 ZJS |
1204 | |
1205 | return streq(filename, full) || | |
1206 | streq(filename, tilded) || | |
1207 | startswith(filename, atted); | |
1208 | } | |
1209 | ||
1210 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1211 | assert(filename); |
1212 | ||
a688baa8 ZJS |
1213 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) |
1214 | return false; | |
1215 | ||
1216 | /* no flags set → every type is OK */ | |
1217 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1218 | return true; | |
1219 | ||
1220 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1221 | return true; | |
1222 | ||
1223 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1224 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1225 | ||
5ffa8c81 | 1226 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1227 | |
1228 | if (file_has_type_prefix(prefix, filename)) | |
1229 | return true; | |
1230 | } | |
1231 | ||
1232 | return false; | |
1233 | } | |
1234 | ||
5d1ce257 LP |
1235 | static bool path_has_prefix(sd_journal *j, const char *path, const char *prefix) { |
1236 | assert(j); | |
1237 | assert(path); | |
1238 | assert(prefix); | |
1239 | ||
1240 | if (j->toplevel_fd >= 0) | |
1241 | return false; | |
1242 | ||
1243 | return path_startswith(path, prefix); | |
1244 | } | |
1245 | ||
1246 | static const char *skip_slash(const char *p) { | |
1247 | ||
1248 | if (!p) | |
1249 | return NULL; | |
1250 | ||
1251 | while (*p == '/') | |
1252 | p++; | |
1253 | ||
1254 | return p; | |
1255 | } | |
1256 | ||
1257 | static int add_any_file(sd_journal *j, int fd, const char *path) { | |
39883f62 | 1258 | JournalFile *f = NULL; |
5d1ce257 | 1259 | bool close_fd = false; |
d617408e | 1260 | int r, k; |
3fbf9cbb LP |
1261 | |
1262 | assert(j); | |
5d1ce257 | 1263 | assert(fd >= 0 || path); |
3fbf9cbb | 1264 | |
858749f7 LP |
1265 | if (path) { |
1266 | f = ordered_hashmap_get(j->files, path); | |
1267 | if (f) { | |
1268 | /* Mark this file as seen in this generation. This is used to GC old files in | |
1269 | * process_q_overflow() to detect journal files that are still and discern them from those who | |
1270 | * are gone. */ | |
1271 | f->last_seen_generation = j->generation; | |
1272 | return 0; | |
1273 | } | |
1274 | } | |
50f20cfd | 1275 | |
9e8abdf0 | 1276 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
d617408e LP |
1277 | log_debug("Too many open journal files, not adding %s.", path); |
1278 | r = -ETOOMANYREFS; | |
1279 | goto fail; | |
9e8abdf0 LP |
1280 | } |
1281 | ||
5d1ce257 LP |
1282 | if (fd < 0 && j->toplevel_fd >= 0) { |
1283 | ||
1284 | /* If there's a top-level fd defined, open the file relative to this now. (Make the path relative, | |
1285 | * explicitly, since otherwise openat() ignores the first argument.) */ | |
1286 | ||
1287 | fd = openat(j->toplevel_fd, skip_slash(path), O_RDONLY|O_CLOEXEC); | |
1288 | if (fd < 0) { | |
1289 | r = log_debug_errno(errno, "Failed to open journal file %s: %m", path); | |
1290 | goto fail; | |
1291 | } | |
1292 | ||
1293 | close_fd = true; | |
1294 | } | |
1295 | ||
1296 | r = journal_file_open(fd, path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, NULL, &f); | |
d617408e | 1297 | if (r < 0) { |
5d1ce257 LP |
1298 | if (close_fd) |
1299 | safe_close(fd); | |
d617408e LP |
1300 | log_debug_errno(r, "Failed to open journal file %s: %m", path); |
1301 | goto fail; | |
1302 | } | |
3fbf9cbb | 1303 | |
72f59706 | 1304 | /* journal_file_dump(f); */ |
de190aef | 1305 | |
c1f906bd | 1306 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1307 | if (r < 0) { |
5d1ce257 | 1308 | f->close_fd = close_fd; |
69a3a6fd | 1309 | (void) journal_file_close(f); |
d617408e | 1310 | goto fail; |
3fbf9cbb LP |
1311 | } |
1312 | ||
858749f7 LP |
1313 | f->last_seen_generation = j->generation; |
1314 | ||
5d1ce257 LP |
1315 | if (!j->has_runtime_files && path_has_prefix(j, f->path, "/run")) |
1316 | j->has_runtime_files = true; | |
1317 | else if (!j->has_persistent_files && path_has_prefix(j, f->path, "/var")) | |
1318 | j->has_persistent_files = true; | |
1319 | ||
5ec76417 | 1320 | log_debug("File %s added.", f->path); |
a50d7d43 | 1321 | |
85210bff LP |
1322 | check_network(j, f->fd); |
1323 | ||
313cefa1 | 1324 | j->current_invalidate_counter++; |
a963990f | 1325 | |
50f20cfd | 1326 | return 0; |
d617408e LP |
1327 | |
1328 | fail: | |
5768d259 | 1329 | k = journal_put_error(j, r, path); |
d617408e LP |
1330 | if (k < 0) |
1331 | return k; | |
1332 | ||
1333 | return r; | |
50f20cfd LP |
1334 | } |
1335 | ||
fc1813c0 LP |
1336 | static int add_file_by_name( |
1337 | sd_journal *j, | |
1338 | const char *prefix, | |
1339 | const char *filename) { | |
1340 | ||
d617408e | 1341 | const char *path; |
5302ebe1 ZJS |
1342 | |
1343 | assert(j); | |
1344 | assert(prefix); | |
1345 | assert(filename); | |
1346 | ||
5d1ce257 | 1347 | if (j->no_new_files) |
5302ebe1 ZJS |
1348 | return 0; |
1349 | ||
5d1ce257 LP |
1350 | if (!file_type_wanted(j->flags, filename)) |
1351 | return 0; | |
39fd5b08 | 1352 | |
5d1ce257 LP |
1353 | path = strjoina(prefix, "/", filename); |
1354 | return add_any_file(j, -1, path); | |
5302ebe1 ZJS |
1355 | } |
1356 | ||
fc1813c0 LP |
1357 | static void remove_file_by_name( |
1358 | sd_journal *j, | |
1359 | const char *prefix, | |
1360 | const char *filename) { | |
1361 | ||
d617408e | 1362 | const char *path; |
50f20cfd LP |
1363 | JournalFile *f; |
1364 | ||
1365 | assert(j); | |
1366 | assert(prefix); | |
1367 | assert(filename); | |
1368 | ||
d617408e | 1369 | path = strjoina(prefix, "/", filename); |
c1f906bd | 1370 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1371 | if (!f) |
d617408e | 1372 | return; |
50f20cfd | 1373 | |
a9a245c1 | 1374 | remove_file_real(j, f); |
a9a245c1 ZJS |
1375 | } |
1376 | ||
1377 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1378 | assert(j); | |
1379 | assert(f); | |
1380 | ||
fc1813c0 | 1381 | (void) ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1382 | |
5ec76417 | 1383 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1384 | |
3c1668da LP |
1385 | if (j->current_file == f) { |
1386 | j->current_file = NULL; | |
1387 | j->current_field = 0; | |
1388 | } | |
1389 | ||
1390 | if (j->unique_file == f) { | |
360af4cf | 1391 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1392 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1393 | j->unique_offset = 0; |
360af4cf ZJS |
1394 | if (!j->unique_file) |
1395 | j->unique_file_lost = true; | |
3c1668da LP |
1396 | } |
1397 | ||
eb86030e LP |
1398 | if (j->fields_file == f) { |
1399 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1400 | j->fields_offset = 0; | |
1401 | if (!j->fields_file) | |
1402 | j->fields_file_lost = true; | |
1403 | } | |
1404 | ||
69a3a6fd | 1405 | (void) journal_file_close(f); |
50f20cfd | 1406 | |
313cefa1 | 1407 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1408 | } |
1409 | ||
d617408e LP |
1410 | static int dirname_is_machine_id(const char *fn) { |
1411 | sd_id128_t id, machine; | |
1412 | int r; | |
1413 | ||
1414 | r = sd_id128_get_machine(&machine); | |
1415 | if (r < 0) | |
1416 | return r; | |
1417 | ||
1418 | r = sd_id128_from_string(fn, &id); | |
1419 | if (r < 0) | |
1420 | return r; | |
1421 | ||
1422 | return sd_id128_equal(id, machine); | |
1423 | } | |
1424 | ||
858749f7 LP |
1425 | static bool dirent_is_journal_file(const struct dirent *de) { |
1426 | assert(de); | |
1427 | ||
1428 | if (!IN_SET(de->d_type, DT_REG, DT_LNK, DT_UNKNOWN)) | |
1429 | return false; | |
1430 | ||
1431 | return endswith(de->d_name, ".journal") || | |
1432 | endswith(de->d_name, ".journal~"); | |
1433 | } | |
1434 | ||
1435 | static bool dirent_is_id128_subdir(const struct dirent *de) { | |
1436 | assert(de); | |
1437 | ||
1438 | if (!IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN)) | |
1439 | return false; | |
1440 | ||
1441 | return id128_is_valid(de->d_name); | |
1442 | } | |
1443 | ||
1444 | static int directory_open(sd_journal *j, const char *path, DIR **ret) { | |
1445 | DIR *d; | |
1446 | ||
1447 | assert(j); | |
1448 | assert(path); | |
1449 | assert(ret); | |
1450 | ||
1451 | if (j->toplevel_fd < 0) | |
1452 | d = opendir(path); | |
1453 | else | |
1454 | /* Open the specified directory relative to the toplevel fd. Enforce that the path specified is | |
1455 | * relative, by dropping the initial slash */ | |
1456 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
1457 | if (!d) | |
1458 | return -errno; | |
1459 | ||
1460 | *ret = d; | |
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname); | |
1465 | ||
1466 | static void directory_enumerate(sd_journal *j, Directory *m, DIR *d) { | |
1467 | struct dirent *de; | |
1468 | ||
1469 | assert(j); | |
1470 | assert(m); | |
1471 | assert(d); | |
1472 | ||
1473 | FOREACH_DIRENT_ALL(de, d, goto fail) { | |
fc1813c0 | 1474 | |
858749f7 | 1475 | if (dirent_is_journal_file(de)) |
fc1813c0 | 1476 | (void) add_file_by_name(j, m->path, de->d_name); |
858749f7 LP |
1477 | |
1478 | if (m->is_root && dirent_is_id128_subdir(de)) | |
1479 | (void) add_directory(j, m->path, de->d_name); | |
1480 | } | |
1481 | ||
1482 | return; | |
1483 | ||
1484 | fail: | |
1485 | log_debug_errno(errno, "Failed to enumerate directory %s, ignoring: %m", m->path); | |
1486 | } | |
1487 | ||
1488 | static void directory_watch(sd_journal *j, Directory *m, int fd, uint32_t mask) { | |
1489 | int r; | |
1490 | ||
1491 | assert(j); | |
1492 | assert(m); | |
1493 | assert(fd >= 0); | |
1494 | ||
1495 | /* Watch this directory if that's enabled and if it not being watched yet. */ | |
1496 | ||
1497 | if (m->wd > 0) /* Already have a watch? */ | |
1498 | return; | |
1499 | if (j->inotify_fd < 0) /* Not watching at all? */ | |
1500 | return; | |
1501 | ||
1502 | m->wd = inotify_add_watch_fd(j->inotify_fd, fd, mask); | |
1503 | if (m->wd < 0) { | |
1504 | log_debug_errno(errno, "Failed to watch journal directory '%s', ignoring: %m", m->path); | |
1505 | return; | |
1506 | } | |
1507 | ||
1508 | r = hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m); | |
1509 | if (r == -EEXIST) | |
1510 | log_debug_errno(r, "Directory '%s' already being watched under a different path, ignoring: %m", m->path); | |
1511 | if (r < 0) { | |
1512 | log_debug_errno(r, "Failed to add watch for journal directory '%s' to hashmap, ignoring: %m", m->path); | |
1513 | (void) inotify_rm_watch(j->inotify_fd, m->wd); | |
1514 | m->wd = -1; | |
1515 | } | |
1516 | } | |
1517 | ||
a963990f | 1518 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1519 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1520 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1521 | Directory *m; |
d617408e | 1522 | int r, k; |
3fbf9cbb LP |
1523 | |
1524 | assert(j); | |
1525 | assert(prefix); | |
3fbf9cbb | 1526 | |
5d1ce257 LP |
1527 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1528 | * and reenumerates directory contents */ | |
d95b1fb3 | 1529 | |
5d1ce257 | 1530 | if (dirname) |
605405c6 | 1531 | path = strjoin(prefix, "/", dirname); |
5d1ce257 LP |
1532 | else |
1533 | path = strdup(prefix); | |
d617408e LP |
1534 | if (!path) { |
1535 | r = -ENOMEM; | |
1536 | goto fail; | |
1537 | } | |
3fbf9cbb | 1538 | |
858749f7 | 1539 | log_debug("Considering directory '%s'.", path); |
5d1ce257 LP |
1540 | |
1541 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1542 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1543 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
858749f7 | 1544 | return 0; |
5d1ce257 | 1545 | |
858749f7 LP |
1546 | r = directory_open(j, path, &d); |
1547 | if (r < 0) { | |
1548 | log_debug_errno(r, "Failed to open directory '%s': %m", path); | |
d617408e | 1549 | goto fail; |
3fbf9cbb LP |
1550 | } |
1551 | ||
a963990f LP |
1552 | m = hashmap_get(j->directories_by_path, path); |
1553 | if (!m) { | |
1554 | m = new0(Directory, 1); | |
d617408e LP |
1555 | if (!m) { |
1556 | r = -ENOMEM; | |
1557 | goto fail; | |
1558 | } | |
a963990f LP |
1559 | |
1560 | m->is_root = false; | |
1561 | m->path = path; | |
1562 | ||
1563 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1564 | free(m); |
d617408e LP |
1565 | r = -ENOMEM; |
1566 | goto fail; | |
a963990f LP |
1567 | } |
1568 | ||
a50d7d43 | 1569 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1570 | j->current_invalidate_counter++; |
a963990f | 1571 | |
5ec76417 | 1572 | log_debug("Directory %s added.", m->path); |
a963990f | 1573 | |
a50d7d43 | 1574 | } else if (m->is_root) |
858749f7 | 1575 | return 0; /* Don't 'downgrade' from root directory */ |
a963990f | 1576 | |
858749f7 | 1577 | m->last_seen_generation = j->generation; |
a963990f | 1578 | |
858749f7 LP |
1579 | directory_watch(j, m, dirfd(d), |
1580 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1581 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1582 | IN_ONLYDIR); | |
a963990f | 1583 | |
858749f7 LP |
1584 | if (!j->no_new_files) |
1585 | directory_enumerate(j, m, d); | |
a963990f | 1586 | |
85210bff LP |
1587 | check_network(j, dirfd(d)); |
1588 | ||
a963990f | 1589 | return 0; |
d617408e LP |
1590 | |
1591 | fail: | |
5d1ce257 | 1592 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1593 | if (k < 0) |
1594 | return k; | |
1595 | ||
1596 | return r; | |
a963990f LP |
1597 | } |
1598 | ||
d617408e | 1599 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1600 | |
7fd1b19b | 1601 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1602 | Directory *m; |
d617408e | 1603 | int r, k; |
a963990f LP |
1604 | |
1605 | assert(j); | |
a963990f | 1606 | |
5d1ce257 LP |
1607 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1608 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1609 | * populate the set, as well as to update it later. */ | |
a963990f | 1610 | |
5d1ce257 LP |
1611 | if (p) { |
1612 | /* If there's a path specified, use it. */ | |
b6741478 | 1613 | |
858749f7 LP |
1614 | log_debug("Considering root directory '%s'.", p); |
1615 | ||
5d1ce257 LP |
1616 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1617 | !path_has_prefix(j, p, "/run")) | |
1618 | return -EINVAL; | |
d617408e | 1619 | |
5d1ce257 LP |
1620 | if (j->prefix) |
1621 | p = strjoina(j->prefix, p); | |
1622 | ||
858749f7 LP |
1623 | r = directory_open(j, p, &d); |
1624 | if (r == -ENOENT && missing_ok) | |
1625 | return 0; | |
1626 | if (r < 0) { | |
1627 | log_debug_errno(r, "Failed to open root directory %s: %m", p); | |
5d1ce257 LP |
1628 | goto fail; |
1629 | } | |
1630 | } else { | |
1631 | int dfd; | |
1632 | ||
1633 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1634 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1635 | ||
1636 | p = "."; /* store this as "." in the directories hashmap */ | |
1637 | ||
1638 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1639 | if (dfd < 0) { | |
1640 | r = -errno; | |
1641 | goto fail; | |
1642 | } | |
1643 | ||
1644 | d = fdopendir(dfd); | |
1645 | if (!d) { | |
1646 | r = -errno; | |
1647 | safe_close(dfd); | |
1648 | goto fail; | |
1649 | } | |
1650 | ||
1651 | rewinddir(d); | |
d617408e | 1652 | } |
a963990f LP |
1653 | |
1654 | m = hashmap_get(j->directories_by_path, p); | |
1655 | if (!m) { | |
1656 | m = new0(Directory, 1); | |
d617408e LP |
1657 | if (!m) { |
1658 | r = -ENOMEM; | |
1659 | goto fail; | |
1660 | } | |
a963990f LP |
1661 | |
1662 | m->is_root = true; | |
5d1ce257 | 1663 | |
a963990f LP |
1664 | m->path = strdup(p); |
1665 | if (!m->path) { | |
a963990f | 1666 | free(m); |
d617408e LP |
1667 | r = -ENOMEM; |
1668 | goto fail; | |
a963990f LP |
1669 | } |
1670 | ||
1671 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1672 | free(m->path); |
1673 | free(m); | |
d617408e LP |
1674 | r = -ENOMEM; |
1675 | goto fail; | |
a963990f LP |
1676 | } |
1677 | ||
313cefa1 | 1678 | j->current_invalidate_counter++; |
a963990f | 1679 | |
5ec76417 | 1680 | log_debug("Root directory %s added.", m->path); |
a963990f | 1681 | |
a50d7d43 | 1682 | } else if (!m->is_root) |
a963990f | 1683 | return 0; |
50f20cfd | 1684 | |
858749f7 LP |
1685 | directory_watch(j, m, dirfd(d), |
1686 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1687 | IN_ONLYDIR); | |
a963990f | 1688 | |
858749f7 LP |
1689 | if (!j->no_new_files) |
1690 | directory_enumerate(j, m, d); | |
3fbf9cbb | 1691 | |
85210bff LP |
1692 | check_network(j, dirfd(d)); |
1693 | ||
a963990f | 1694 | return 0; |
d617408e LP |
1695 | |
1696 | fail: | |
5768d259 | 1697 | k = journal_put_error(j, r, p); |
d617408e LP |
1698 | if (k < 0) |
1699 | return k; | |
1700 | ||
1701 | return r; | |
a963990f LP |
1702 | } |
1703 | ||
b2b46f91 | 1704 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1705 | assert(j); |
1706 | ||
1707 | if (d->wd > 0) { | |
1708 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1709 | ||
1710 | if (j->inotify_fd >= 0) | |
1711 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1712 | } | |
1713 | ||
1714 | hashmap_remove(j->directories_by_path, d->path); | |
1715 | ||
1716 | if (d->is_root) | |
5ec76417 | 1717 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1718 | else |
5ec76417 | 1719 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1720 | |
1721 | free(d->path); | |
1722 | free(d); | |
3fbf9cbb LP |
1723 | } |
1724 | ||
89739579 | 1725 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1726 | |
1727 | static const char search_paths[] = | |
a963990f LP |
1728 | "/run/log/journal\0" |
1729 | "/var/log/journal\0"; | |
1730 | const char *p; | |
50f20cfd LP |
1731 | |
1732 | assert(j); | |
50f20cfd | 1733 | |
a963990f LP |
1734 | /* We ignore most errors here, since the idea is to only open |
1735 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1736 | |
d617408e LP |
1737 | NULSTR_FOREACH(p, search_paths) |
1738 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1739 | |
574b77ef MB |
1740 | if (!(j->flags & SD_JOURNAL_LOCAL_ONLY)) |
1741 | (void) add_root_directory(j, "/var/log/journal/remote", true); | |
1742 | ||
a963990f | 1743 | return 0; |
50f20cfd LP |
1744 | } |
1745 | ||
5302ebe1 ZJS |
1746 | static int add_current_paths(sd_journal *j) { |
1747 | Iterator i; | |
1748 | JournalFile *f; | |
1749 | ||
1750 | assert(j); | |
1751 | assert(j->no_new_files); | |
1752 | ||
5d1ce257 | 1753 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1754 | * treat them as fatal. */ |
1755 | ||
c1f906bd | 1756 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1757 | _cleanup_free_ char *dir; |
e9174f29 | 1758 | int r; |
5302ebe1 ZJS |
1759 | |
1760 | dir = dirname_malloc(f->path); | |
1761 | if (!dir) | |
1762 | return -ENOMEM; | |
1763 | ||
5d1ce257 | 1764 | r = add_directory(j, dir, NULL); |
d617408e | 1765 | if (r < 0) |
5302ebe1 | 1766 | return r; |
5302ebe1 ZJS |
1767 | } |
1768 | ||
1769 | return 0; | |
1770 | } | |
1771 | ||
a963990f | 1772 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1773 | assert(j); |
50f20cfd | 1774 | |
a963990f LP |
1775 | if (j->inotify_fd < 0) { |
1776 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1777 | if (j->inotify_fd < 0) | |
1778 | return -errno; | |
1779 | } | |
50f20cfd | 1780 | |
cb306f5d | 1781 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
1782 | } |
1783 | ||
7827b1a1 | 1784 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1785 | sd_journal *j; |
50f20cfd | 1786 | |
a963990f LP |
1787 | j = new0(sd_journal, 1); |
1788 | if (!j) | |
1789 | return NULL; | |
50f20cfd | 1790 | |
df0ff127 | 1791 | j->original_pid = getpid_cached(); |
5d1ce257 | 1792 | j->toplevel_fd = -1; |
a963990f LP |
1793 | j->inotify_fd = -1; |
1794 | j->flags = flags; | |
93b73b06 | 1795 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1796 | |
7827b1a1 | 1797 | if (path) { |
16fefe90 ZJS |
1798 | char *t; |
1799 | ||
1800 | t = strdup(path); | |
1801 | if (!t) | |
6180fc61 | 1802 | goto fail; |
16fefe90 ZJS |
1803 | |
1804 | if (flags & SD_JOURNAL_OS_ROOT) | |
1805 | j->prefix = t; | |
1806 | else | |
1807 | j->path = t; | |
7827b1a1 LP |
1808 | } |
1809 | ||
548f6937 | 1810 | j->files = ordered_hashmap_new(&path_hash_ops); |
5d4ba7f2 VC |
1811 | if (!j->files) |
1812 | goto fail; | |
1813 | ||
1814 | j->files_cache = ordered_hashmap_iterated_cache_new(j->files); | |
548f6937 | 1815 | j->directories_by_path = hashmap_new(&path_hash_ops); |
84168d80 | 1816 | j->mmap = mmap_cache_new(); |
5d4ba7f2 | 1817 | if (!j->files_cache || !j->directories_by_path || !j->mmap) |
6180fc61 | 1818 | goto fail; |
16e9f408 | 1819 | |
a963990f | 1820 | return j; |
6180fc61 ZJS |
1821 | |
1822 | fail: | |
1823 | sd_journal_close(j); | |
1824 | return NULL; | |
50f20cfd LP |
1825 | } |
1826 | ||
1aaa68f5 ZJS |
1827 | #define OPEN_ALLOWED_FLAGS \ |
1828 | (SD_JOURNAL_LOCAL_ONLY | \ | |
1829 | SD_JOURNAL_RUNTIME_ONLY | \ | |
1830 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER) | |
1831 | ||
a5344d2c | 1832 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1833 | sd_journal *j; |
3fbf9cbb | 1834 | int r; |
87d2c1ff | 1835 | |
1ae464e0 | 1836 | assert_return(ret, -EINVAL); |
1aaa68f5 | 1837 | assert_return((flags & ~OPEN_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1838 | |
7827b1a1 | 1839 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1840 | if (!j) |
1841 | return -ENOMEM; | |
1842 | ||
89739579 | 1843 | r = add_search_paths(j); |
a963990f | 1844 | if (r < 0) |
50f20cfd | 1845 | goto fail; |
50f20cfd | 1846 | |
a963990f LP |
1847 | *ret = j; |
1848 | return 0; | |
cf244689 | 1849 | |
a963990f LP |
1850 | fail: |
1851 | sd_journal_close(j); | |
87d2c1ff | 1852 | |
a963990f LP |
1853 | return r; |
1854 | } | |
50f20cfd | 1855 | |
1aaa68f5 ZJS |
1856 | #define OPEN_CONTAINER_ALLOWED_FLAGS \ |
1857 | (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM) | |
1858 | ||
b6741478 LP |
1859 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1860 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1861 | sd_journal *j; | |
1862 | char *p; | |
1863 | int r; | |
1864 | ||
2daa9cbd LP |
1865 | /* This is pretty much deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
1866 | * combination with sd_journal_open_directory_fd(). */ | |
1867 | ||
b6741478 LP |
1868 | assert_return(machine, -EINVAL); |
1869 | assert_return(ret, -EINVAL); | |
1aaa68f5 | 1870 | assert_return((flags & ~OPEN_CONTAINER_ALLOWED_FLAGS) == 0, -EINVAL); |
affcf189 | 1871 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1872 | |
63c372cb | 1873 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1874 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1875 | if (r == -ENOENT) | |
1876 | return -EHOSTDOWN; | |
1877 | if (r < 0) | |
1878 | return r; | |
1879 | if (!root) | |
1880 | return -ENODATA; | |
1881 | ||
1882 | if (!streq_ptr(class, "container")) | |
1883 | return -EIO; | |
1884 | ||
16fefe90 | 1885 | j = journal_new(flags, root); |
b6741478 LP |
1886 | if (!j) |
1887 | return -ENOMEM; | |
1888 | ||
89739579 | 1889 | r = add_search_paths(j); |
b6741478 LP |
1890 | if (r < 0) |
1891 | goto fail; | |
1892 | ||
1893 | *ret = j; | |
1894 | return 0; | |
1895 | ||
1896 | fail: | |
1897 | sd_journal_close(j); | |
1898 | return r; | |
1899 | } | |
1900 | ||
1aaa68f5 | 1901 | #define OPEN_DIRECTORY_ALLOWED_FLAGS \ |
10752e82 ZJS |
1902 | (SD_JOURNAL_OS_ROOT | \ |
1903 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 1904 | |
a963990f LP |
1905 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1906 | sd_journal *j; | |
1907 | int r; | |
87d2c1ff | 1908 | |
1ae464e0 TA |
1909 | assert_return(ret, -EINVAL); |
1910 | assert_return(path, -EINVAL); | |
1aaa68f5 | 1911 | assert_return((flags & ~OPEN_DIRECTORY_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1912 | |
7827b1a1 | 1913 | j = journal_new(flags, path); |
a963990f LP |
1914 | if (!j) |
1915 | return -ENOMEM; | |
3fbf9cbb | 1916 | |
d077390c LP |
1917 | if (flags & SD_JOURNAL_OS_ROOT) |
1918 | r = add_search_paths(j); | |
1919 | else | |
1920 | r = add_root_directory(j, path, false); | |
d617408e | 1921 | if (r < 0) |
a963990f | 1922 | goto fail; |
87d2c1ff LP |
1923 | |
1924 | *ret = j; | |
1925 | return 0; | |
1926 | ||
1927 | fail: | |
1928 | sd_journal_close(j); | |
87d2c1ff | 1929 | return r; |
a963990f | 1930 | } |
87d2c1ff | 1931 | |
5302ebe1 ZJS |
1932 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1933 | sd_journal *j; | |
1934 | const char **path; | |
1935 | int r; | |
1936 | ||
1ae464e0 TA |
1937 | assert_return(ret, -EINVAL); |
1938 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1939 | |
1940 | j = journal_new(flags, NULL); | |
1941 | if (!j) | |
1942 | return -ENOMEM; | |
1943 | ||
1944 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 1945 | r = add_any_file(j, -1, *path); |
d617408e | 1946 | if (r < 0) |
5302ebe1 | 1947 | goto fail; |
5302ebe1 ZJS |
1948 | } |
1949 | ||
1950 | j->no_new_files = true; | |
1951 | ||
1952 | *ret = j; | |
1953 | return 0; | |
1954 | ||
1955 | fail: | |
1956 | sd_journal_close(j); | |
5d1ce257 LP |
1957 | return r; |
1958 | } | |
1959 | ||
1aaa68f5 | 1960 | #define OPEN_DIRECTORY_FD_ALLOWED_FLAGS \ |
10752e82 ZJS |
1961 | (SD_JOURNAL_OS_ROOT | \ |
1962 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 1963 | |
5d1ce257 LP |
1964 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { |
1965 | sd_journal *j; | |
1966 | struct stat st; | |
1967 | int r; | |
1968 | ||
1969 | assert_return(ret, -EINVAL); | |
1970 | assert_return(fd >= 0, -EBADF); | |
1aaa68f5 | 1971 | assert_return((flags & ~OPEN_DIRECTORY_FD_ALLOWED_FLAGS) == 0, -EINVAL); |
5d1ce257 LP |
1972 | |
1973 | if (fstat(fd, &st) < 0) | |
1974 | return -errno; | |
1975 | ||
1976 | if (!S_ISDIR(st.st_mode)) | |
1977 | return -EBADFD; | |
1978 | ||
1979 | j = journal_new(flags, NULL); | |
1980 | if (!j) | |
1981 | return -ENOMEM; | |
1982 | ||
1983 | j->toplevel_fd = fd; | |
1984 | ||
d077390c LP |
1985 | if (flags & SD_JOURNAL_OS_ROOT) |
1986 | r = add_search_paths(j); | |
1987 | else | |
1988 | r = add_root_directory(j, NULL, false); | |
5d1ce257 LP |
1989 | if (r < 0) |
1990 | goto fail; | |
1991 | ||
1992 | *ret = j; | |
1993 | return 0; | |
1994 | ||
1995 | fail: | |
1996 | sd_journal_close(j); | |
1997 | return r; | |
1998 | } | |
1999 | ||
2000 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
2001 | Iterator iterator; | |
2002 | JournalFile *f; | |
2003 | sd_journal *j; | |
2004 | unsigned i; | |
2005 | int r; | |
2006 | ||
2007 | assert_return(ret, -EINVAL); | |
2008 | assert_return(n_fds > 0, -EBADF); | |
2009 | assert_return(flags == 0, -EINVAL); | |
2010 | ||
2011 | j = journal_new(flags, NULL); | |
2012 | if (!j) | |
2013 | return -ENOMEM; | |
2014 | ||
2015 | for (i = 0; i < n_fds; i++) { | |
2016 | struct stat st; | |
2017 | ||
2018 | if (fds[i] < 0) { | |
2019 | r = -EBADF; | |
2020 | goto fail; | |
2021 | } | |
2022 | ||
2023 | if (fstat(fds[i], &st) < 0) { | |
2024 | r = -errno; | |
2025 | goto fail; | |
2026 | } | |
2027 | ||
8d6a4d33 LP |
2028 | if (S_ISDIR(st.st_mode)) { |
2029 | r = -EISDIR; | |
2030 | goto fail; | |
2031 | } | |
5d1ce257 LP |
2032 | if (!S_ISREG(st.st_mode)) { |
2033 | r = -EBADFD; | |
2034 | goto fail; | |
2035 | } | |
2036 | ||
2037 | r = add_any_file(j, fds[i], NULL); | |
2038 | if (r < 0) | |
2039 | goto fail; | |
2040 | } | |
2041 | ||
2042 | j->no_new_files = true; | |
2043 | j->no_inotify = true; | |
5302ebe1 | 2044 | |
5d1ce257 LP |
2045 | *ret = j; |
2046 | return 0; | |
2047 | ||
2048 | fail: | |
f8e2f4d6 | 2049 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 LP |
2050 | * remain open */ |
2051 | ORDERED_HASHMAP_FOREACH(f, j->files, iterator) | |
2052 | f->close_fd = false; | |
2053 | ||
2054 | sd_journal_close(j); | |
5302ebe1 ZJS |
2055 | return r; |
2056 | } | |
2057 | ||
a5344d2c | 2058 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f | 2059 | Directory *d; |
a963990f | 2060 | |
a5344d2c LP |
2061 | if (!j) |
2062 | return; | |
87d2c1ff | 2063 | |
54b1da83 LP |
2064 | sd_journal_flush_matches(j); |
2065 | ||
f9168190 | 2066 | ordered_hashmap_free_with_destructor(j->files, journal_file_close); |
5d4ba7f2 | 2067 | iterated_cache_free(j->files_cache); |
260a2be4 | 2068 | |
a963990f LP |
2069 | while ((d = hashmap_first(j->directories_by_path))) |
2070 | remove_directory(j, d); | |
260a2be4 | 2071 | |
a963990f LP |
2072 | while ((d = hashmap_first(j->directories_by_wd))) |
2073 | remove_directory(j, d); | |
87d2c1ff | 2074 | |
a963990f LP |
2075 | hashmap_free(j->directories_by_path); |
2076 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 2077 | |
03e334a1 | 2078 | safe_close(j->inotify_fd); |
50f20cfd | 2079 | |
bf807d4d LP |
2080 | if (j->mmap) { |
2081 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 2082 | mmap_cache_unref(j->mmap); |
bf807d4d | 2083 | } |
16e9f408 | 2084 | |
ec1d2909 | 2085 | hashmap_free_free(j->errors); |
5768d259 | 2086 | |
7827b1a1 | 2087 | free(j->path); |
89739579 | 2088 | free(j->prefix); |
3c1668da | 2089 | free(j->unique_field); |
eb86030e | 2090 | free(j->fields_buffer); |
87d2c1ff LP |
2091 | free(j); |
2092 | } | |
3fbf9cbb | 2093 | |
a5344d2c | 2094 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
2095 | Object *o; |
2096 | JournalFile *f; | |
2097 | int r; | |
2098 | ||
1ae464e0 TA |
2099 | assert_return(j, -EINVAL); |
2100 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2101 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
2102 | |
2103 | f = j->current_file; | |
2104 | if (!f) | |
de190aef | 2105 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2106 | |
2107 | if (f->current_offset <= 0) | |
de190aef | 2108 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2109 | |
de190aef | 2110 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2111 | if (r < 0) |
2112 | return r; | |
2113 | ||
2114 | *ret = le64toh(o->entry.realtime); | |
de190aef | 2115 | return 0; |
3fbf9cbb LP |
2116 | } |
2117 | ||
a5344d2c | 2118 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
2119 | Object *o; |
2120 | JournalFile *f; | |
2121 | int r; | |
2122 | sd_id128_t id; | |
2123 | ||
1ae464e0 TA |
2124 | assert_return(j, -EINVAL); |
2125 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
2126 | |
2127 | f = j->current_file; | |
2128 | if (!f) | |
de190aef | 2129 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2130 | |
2131 | if (f->current_offset <= 0) | |
de190aef | 2132 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2133 | |
de190aef | 2134 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2135 | if (r < 0) |
2136 | return r; | |
2137 | ||
de190aef LP |
2138 | if (ret_boot_id) |
2139 | *ret_boot_id = o->entry.boot_id; | |
2140 | else { | |
2141 | r = sd_id128_get_boot(&id); | |
2142 | if (r < 0) | |
2143 | return r; | |
3fbf9cbb | 2144 | |
de190aef | 2145 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2146 | return -ESTALE; |
de190aef | 2147 | } |
3fbf9cbb | 2148 | |
14a65d65 LP |
2149 | if (ret) |
2150 | *ret = le64toh(o->entry.monotonic); | |
2151 | ||
de190aef | 2152 | return 0; |
3fbf9cbb LP |
2153 | } |
2154 | ||
362a3f81 LP |
2155 | static bool field_is_valid(const char *field) { |
2156 | const char *p; | |
2157 | ||
2158 | assert(field); | |
2159 | ||
2160 | if (isempty(field)) | |
2161 | return false; | |
2162 | ||
2163 | if (startswith(field, "__")) | |
2164 | return false; | |
2165 | ||
2166 | for (p = field; *p; p++) { | |
2167 | ||
2168 | if (*p == '_') | |
2169 | continue; | |
2170 | ||
2171 | if (*p >= 'A' && *p <= 'Z') | |
2172 | continue; | |
2173 | ||
2174 | if (*p >= '0' && *p <= '9') | |
2175 | continue; | |
2176 | ||
2177 | return false; | |
2178 | } | |
2179 | ||
2180 | return true; | |
2181 | } | |
2182 | ||
a5344d2c | 2183 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
2184 | JournalFile *f; |
2185 | uint64_t i, n; | |
2186 | size_t field_length; | |
2187 | int r; | |
2188 | Object *o; | |
2189 | ||
1ae464e0 TA |
2190 | assert_return(j, -EINVAL); |
2191 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2192 | assert_return(field, -EINVAL); | |
2193 | assert_return(data, -EINVAL); | |
2194 | assert_return(size, -EINVAL); | |
2195 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2196 | |
2197 | f = j->current_file; | |
2198 | if (!f) | |
de190aef | 2199 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2200 | |
2201 | if (f->current_offset <= 0) | |
de190aef | 2202 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2203 | |
de190aef | 2204 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2205 | if (r < 0) |
2206 | return r; | |
2207 | ||
2208 | field_length = strlen(field); | |
2209 | ||
2210 | n = journal_file_entry_n_items(o); | |
2211 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2212 | uint64_t p, l; |
2213 | le64_t le_hash; | |
3fbf9cbb | 2214 | size_t t; |
1ec7120e | 2215 | int compression; |
3fbf9cbb LP |
2216 | |
2217 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 2218 | le_hash = o->entry.items[i].hash; |
de190aef | 2219 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
2220 | if (r < 0) |
2221 | return r; | |
2222 | ||
de190aef | 2223 | if (le_hash != o->data.hash) |
de7b95cd LP |
2224 | return -EBADMSG; |
2225 | ||
3fbf9cbb LP |
2226 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
2227 | ||
1ec7120e | 2228 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 | 2229 | if (compression) { |
349cc4a5 | 2230 | #if HAVE_XZ || HAVE_LZ4 |
2aaec9b4 | 2231 | r = decompress_startswith(compression, |
3b1a55e1 ZJS |
2232 | o->data.payload, l, |
2233 | &f->compress_buffer, &f->compress_buffer_size, | |
2aaec9b4 ZJS |
2234 | field, field_length, '='); |
2235 | if (r < 0) | |
82e24b00 | 2236 | log_debug_errno(r, "Cannot decompress %s object of length %"PRIu64" at offset "OFSfmt": %m", |
2aaec9b4 ZJS |
2237 | object_compressed_to_string(compression), l, p); |
2238 | else if (r > 0) { | |
3b1a55e1 | 2239 | |
fa1c4b51 | 2240 | size_t rsize; |
3b1a55e1 ZJS |
2241 | |
2242 | r = decompress_blob(compression, | |
2243 | o->data.payload, l, | |
2244 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
2245 | j->data_threshold); | |
2246 | if (r < 0) | |
2247 | return r; | |
807e17f0 | 2248 | |
3b1a55e1 ZJS |
2249 | *data = f->compress_buffer; |
2250 | *size = (size_t) rsize; | |
807e17f0 | 2251 | |
3b1a55e1 ZJS |
2252 | return 0; |
2253 | } | |
2254 | #else | |
2255 | return -EPROTONOSUPPORT; | |
2256 | #endif | |
807e17f0 LP |
2257 | } else if (l >= field_length+1 && |
2258 | memcmp(o->data.payload, field, field_length) == 0 && | |
2259 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2260 | |
161e54f8 | 2261 | t = (size_t) l; |
3fbf9cbb | 2262 | |
161e54f8 LP |
2263 | if ((uint64_t) t != l) |
2264 | return -E2BIG; | |
3fbf9cbb | 2265 | |
161e54f8 LP |
2266 | *data = o->data.payload; |
2267 | *size = t; | |
3fbf9cbb | 2268 | |
99613ec5 | 2269 | return 0; |
161e54f8 | 2270 | } |
3fbf9cbb | 2271 | |
de190aef | 2272 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2273 | if (r < 0) |
2274 | return r; | |
3fbf9cbb LP |
2275 | } |
2276 | ||
de190aef | 2277 | return -ENOENT; |
3fbf9cbb LP |
2278 | } |
2279 | ||
93b73b06 | 2280 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2281 | size_t t; |
2282 | uint64_t l; | |
3b1a55e1 | 2283 | int compression; |
3c1668da LP |
2284 | |
2285 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2286 | t = (size_t) l; | |
2287 | ||
2288 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2289 | if ((uint64_t) t != l) | |
2290 | return -E2BIG; | |
2291 | ||
1ec7120e ZJS |
2292 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2293 | if (compression) { | |
349cc4a5 | 2294 | #if HAVE_XZ || HAVE_LZ4 |
fa1c4b51 | 2295 | size_t rsize; |
3b1a55e1 | 2296 | int r; |
3c1668da | 2297 | |
1ec7120e ZJS |
2298 | r = decompress_blob(compression, |
2299 | o->data.payload, l, &f->compress_buffer, | |
2300 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2301 | if (r < 0) | |
2302 | return r; | |
3c1668da LP |
2303 | |
2304 | *data = f->compress_buffer; | |
2305 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2306 | #else |
2307 | return -EPROTONOSUPPORT; | |
2308 | #endif | |
3c1668da LP |
2309 | } else { |
2310 | *data = o->data.payload; | |
2311 | *size = t; | |
2312 | } | |
2313 | ||
2314 | return 0; | |
2315 | } | |
2316 | ||
a5344d2c | 2317 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2318 | JournalFile *f; |
3c1668da | 2319 | uint64_t p, n; |
4fd052ae | 2320 | le64_t le_hash; |
3fbf9cbb LP |
2321 | int r; |
2322 | Object *o; | |
2323 | ||
1ae464e0 TA |
2324 | assert_return(j, -EINVAL); |
2325 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2326 | assert_return(data, -EINVAL); | |
2327 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2328 | |
2329 | f = j->current_file; | |
2330 | if (!f) | |
de190aef | 2331 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2332 | |
2333 | if (f->current_offset <= 0) | |
de190aef | 2334 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2335 | |
de190aef | 2336 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2337 | if (r < 0) |
2338 | return r; | |
2339 | ||
2340 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2341 | if (j->current_field >= n) |
3fbf9cbb LP |
2342 | return 0; |
2343 | ||
7210bfb3 | 2344 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2345 | le_hash = o->entry.items[j->current_field].hash; |
2346 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2347 | if (r < 0) |
2348 | return r; | |
2349 | ||
de190aef | 2350 | if (le_hash != o->data.hash) |
de7b95cd LP |
2351 | return -EBADMSG; |
2352 | ||
93b73b06 | 2353 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2354 | if (r < 0) |
2355 | return r; | |
3fbf9cbb | 2356 | |
313cefa1 | 2357 | j->current_field++; |
3fbf9cbb LP |
2358 | |
2359 | return 1; | |
2360 | } | |
c2373f84 | 2361 | |
a5344d2c LP |
2362 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2363 | if (!j) | |
2364 | return; | |
8725d60a LP |
2365 | |
2366 | j->current_field = 0; | |
c2373f84 | 2367 | } |
50f20cfd | 2368 | |
858749f7 LP |
2369 | static int reiterate_all_paths(sd_journal *j) { |
2370 | assert(j); | |
2371 | ||
2372 | if (j->no_new_files) | |
2373 | return add_current_paths(j); | |
2374 | ||
2375 | if (j->flags & SD_JOURNAL_OS_ROOT) | |
2376 | return add_search_paths(j); | |
2377 | ||
2378 | if (j->toplevel_fd >= 0) | |
2379 | return add_root_directory(j, NULL, false); | |
2380 | ||
2381 | if (j->path) | |
2382 | return add_root_directory(j, j->path, true); | |
2383 | ||
2384 | return add_search_paths(j); | |
2385 | } | |
2386 | ||
a5344d2c | 2387 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2388 | int r; |
2389 | ||
1ae464e0 TA |
2390 | assert_return(j, -EINVAL); |
2391 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2392 | |
5d1ce257 LP |
2393 | if (j->no_inotify) |
2394 | return -EMEDIUMTYPE; | |
2395 | ||
a963990f LP |
2396 | if (j->inotify_fd >= 0) |
2397 | return j->inotify_fd; | |
2398 | ||
2399 | r = allocate_inotify(j); | |
2400 | if (r < 0) | |
2401 | return r; | |
2402 | ||
858749f7 | 2403 | log_debug("Reiterating files to get inotify watches established."); |
5d1ce257 | 2404 | |
858749f7 LP |
2405 | /* Iterate through all dirs again, to add them to the inotify */ |
2406 | r = reiterate_all_paths(j); | |
a963990f LP |
2407 | if (r < 0) |
2408 | return r; | |
2409 | ||
50f20cfd LP |
2410 | return j->inotify_fd; |
2411 | } | |
2412 | ||
ee531d94 LP |
2413 | _public_ int sd_journal_get_events(sd_journal *j) { |
2414 | int fd; | |
2415 | ||
1ae464e0 TA |
2416 | assert_return(j, -EINVAL); |
2417 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2418 | |
2419 | fd = sd_journal_get_fd(j); | |
2420 | if (fd < 0) | |
2421 | return fd; | |
2422 | ||
2423 | return POLLIN; | |
2424 | } | |
2425 | ||
39c155ea LP |
2426 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2427 | int fd; | |
2428 | ||
1ae464e0 TA |
2429 | assert_return(j, -EINVAL); |
2430 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2431 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2432 | |
2433 | fd = sd_journal_get_fd(j); | |
2434 | if (fd < 0) | |
2435 | return fd; | |
2436 | ||
2437 | if (!j->on_network) { | |
2438 | *timeout_usec = (uint64_t) -1; | |
2439 | return 0; | |
2440 | } | |
2441 | ||
2442 | /* If we are on the network we need to regularly check for | |
2443 | * changes manually */ | |
2444 | ||
2445 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2446 | return 1; | |
2447 | } | |
2448 | ||
858749f7 LP |
2449 | static void process_q_overflow(sd_journal *j) { |
2450 | JournalFile *f; | |
2451 | Directory *m; | |
2452 | Iterator i; | |
2453 | ||
2454 | assert(j); | |
2455 | ||
2456 | /* When the inotify queue overruns we need to enumerate and re-validate all journal files to bring our list | |
2457 | * back in sync with what's on disk. For this we pick a new generation counter value. It'll be assigned to all | |
2458 | * journal files we encounter. All journal files and all directories that don't carry it after reenumeration | |
2459 | * are subject for unloading. */ | |
2460 | ||
2461 | log_debug("Inotify queue overrun, reiterating everything."); | |
2462 | ||
2463 | j->generation++; | |
2464 | (void) reiterate_all_paths(j); | |
2465 | ||
2466 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { | |
2467 | ||
2468 | if (f->last_seen_generation == j->generation) | |
2469 | continue; | |
2470 | ||
2471 | log_debug("File '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2472 | remove_file_real(j, f); | |
2473 | } | |
2474 | ||
2475 | HASHMAP_FOREACH(m, j->directories_by_path, i) { | |
2476 | ||
2477 | if (m->last_seen_generation == j->generation) | |
2478 | continue; | |
2479 | ||
2480 | if (m->is_root) /* Never GC root directories */ | |
2481 | continue; | |
2482 | ||
2483 | log_debug("Directory '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2484 | remove_directory(j, m); | |
2485 | } | |
2486 | ||
2487 | log_debug("Reiteration complete."); | |
2488 | } | |
2489 | ||
50f20cfd | 2490 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2491 | Directory *d; |
50f20cfd LP |
2492 | |
2493 | assert(j); | |
2494 | assert(e); | |
2495 | ||
858749f7 LP |
2496 | if (e->mask & IN_Q_OVERFLOW) { |
2497 | process_q_overflow(j); | |
2498 | return; | |
2499 | } | |
2500 | ||
50f20cfd | 2501 | /* Is this a subdirectory we watch? */ |
a963990f LP |
2502 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2503 | if (d) { | |
de2c3907 LP |
2504 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2505 | (endswith(e->name, ".journal") || | |
2506 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2507 | |
2508 | /* Event for a journal file */ | |
2509 | ||
d617408e | 2510 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
fc1813c0 | 2511 | (void) add_file_by_name(j, d->path, e->name); |
d617408e | 2512 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) |
fc1813c0 | 2513 | remove_file_by_name(j, d->path, e->name); |
50f20cfd | 2514 | |
a963990f | 2515 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2516 | |
a963990f | 2517 | /* Event for a subdirectory */ |
50f20cfd | 2518 | |
b2b46f91 TA |
2519 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2520 | remove_directory(j, d); | |
50f20cfd | 2521 | |
a9be0692 | 2522 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && id128_is_valid(e->name)) { |
50f20cfd | 2523 | |
a963990f | 2524 | /* Event for root directory */ |
50f20cfd | 2525 | |
d617408e LP |
2526 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2527 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2528 | } |
2529 | ||
2530 | return; | |
2531 | } | |
2532 | ||
2533 | if (e->mask & IN_IGNORED) | |
2534 | return; | |
2535 | ||
a9be0692 | 2536 | log_debug("Unexpected inotify event."); |
50f20cfd LP |
2537 | } |
2538 | ||
a963990f LP |
2539 | static int determine_change(sd_journal *j) { |
2540 | bool b; | |
2541 | ||
2542 | assert(j); | |
2543 | ||
2544 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2545 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2546 | ||
2547 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2548 | } | |
2549 | ||
a5344d2c | 2550 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2551 | bool got_something = false; |
50f20cfd | 2552 | |
1ae464e0 TA |
2553 | assert_return(j, -EINVAL); |
2554 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2555 | |
10c4d640 LP |
2556 | if (j->inotify_fd < 0) /* We have no inotify fd yet? Then there's noting to process. */ |
2557 | return 0; | |
2558 | ||
39c155ea | 2559 | j->last_process_usec = now(CLOCK_MONOTONIC); |
f9346444 | 2560 | j->last_invalidate_counter = j->current_invalidate_counter; |
39c155ea | 2561 | |
50f20cfd | 2562 | for (;;) { |
0254e944 | 2563 | union inotify_event_buffer buffer; |
50f20cfd LP |
2564 | struct inotify_event *e; |
2565 | ssize_t l; | |
2566 | ||
0254e944 | 2567 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2568 | if (l < 0) { |
3742095b | 2569 | if (IN_SET(errno, EAGAIN, EINTR)) |
a963990f | 2570 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; |
50f20cfd LP |
2571 | |
2572 | return -errno; | |
2573 | } | |
2574 | ||
a963990f LP |
2575 | got_something = true; |
2576 | ||
f7c1ad4f | 2577 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2578 | process_inotify_event(j, e); |
50f20cfd LP |
2579 | } |
2580 | } | |
6ad1d1c3 | 2581 | |
e02d1cf7 | 2582 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2583 | int r; |
39c155ea | 2584 | uint64_t t; |
e02d1cf7 | 2585 | |
1ae464e0 TA |
2586 | assert_return(j, -EINVAL); |
2587 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2588 | |
a963990f LP |
2589 | if (j->inotify_fd < 0) { |
2590 | ||
2591 | /* This is the first invocation, hence create the | |
2592 | * inotify watch */ | |
2593 | r = sd_journal_get_fd(j); | |
2594 | if (r < 0) | |
2595 | return r; | |
2596 | ||
2597 | /* The journal might have changed since the context | |
2598 | * object was created and we weren't watching before, | |
2599 | * hence don't wait for anything, and return | |
2600 | * immediately. */ | |
2601 | return determine_change(j); | |
2602 | } | |
2603 | ||
39c155ea LP |
2604 | r = sd_journal_get_timeout(j, &t); |
2605 | if (r < 0) | |
2606 | return r; | |
2607 | ||
2608 | if (t != (uint64_t) -1) { | |
2609 | usec_t n; | |
2610 | ||
2611 | n = now(CLOCK_MONOTONIC); | |
2612 | t = t > n ? t - n : 0; | |
85210bff | 2613 | |
39c155ea LP |
2614 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2615 | timeout_usec = t; | |
85210bff LP |
2616 | } |
2617 | ||
a963990f LP |
2618 | do { |
2619 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2620 | } while (r == -EINTR); | |
e02d1cf7 LP |
2621 | |
2622 | if (r < 0) | |
2623 | return r; | |
2624 | ||
a963990f | 2625 | return sd_journal_process(j); |
e02d1cf7 LP |
2626 | } |
2627 | ||
08984293 LP |
2628 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2629 | Iterator i; | |
2630 | JournalFile *f; | |
2631 | bool first = true; | |
581483bf | 2632 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2633 | int r; |
2634 | ||
1ae464e0 TA |
2635 | assert_return(j, -EINVAL); |
2636 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2637 | assert_return(from || to, -EINVAL); | |
2638 | assert_return(from != to, -EINVAL); | |
08984293 | 2639 | |
c1f906bd | 2640 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2641 | usec_t fr, t; |
2642 | ||
2643 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2644 | if (r == -ENOENT) |
2645 | continue; | |
08984293 LP |
2646 | if (r < 0) |
2647 | return r; | |
2648 | if (r == 0) | |
2649 | continue; | |
2650 | ||
2651 | if (first) { | |
581483bf LP |
2652 | fmin = fr; |
2653 | tmax = t; | |
08984293 LP |
2654 | first = false; |
2655 | } else { | |
581483bf LP |
2656 | fmin = MIN(fr, fmin); |
2657 | tmax = MAX(t, tmax); | |
08984293 LP |
2658 | } |
2659 | } | |
2660 | ||
581483bf LP |
2661 | if (from) |
2662 | *from = fmin; | |
2663 | if (to) | |
2664 | *to = tmax; | |
2665 | ||
08984293 LP |
2666 | return first ? 0 : 1; |
2667 | } | |
2668 | ||
2669 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2670 | Iterator i; | |
2671 | JournalFile *f; | |
1651e2c6 | 2672 | bool found = false; |
08984293 LP |
2673 | int r; |
2674 | ||
1ae464e0 TA |
2675 | assert_return(j, -EINVAL); |
2676 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2677 | assert_return(from || to, -EINVAL); | |
2678 | assert_return(from != to, -EINVAL); | |
08984293 | 2679 | |
c1f906bd | 2680 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2681 | usec_t fr, t; |
2682 | ||
2683 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2684 | if (r == -ENOENT) |
2685 | continue; | |
08984293 LP |
2686 | if (r < 0) |
2687 | return r; | |
2688 | if (r == 0) | |
2689 | continue; | |
2690 | ||
1651e2c6 | 2691 | if (found) { |
08984293 | 2692 | if (from) |
1651e2c6 | 2693 | *from = MIN(fr, *from); |
08984293 | 2694 | if (to) |
1651e2c6 | 2695 | *to = MAX(t, *to); |
08984293 LP |
2696 | } else { |
2697 | if (from) | |
1651e2c6 | 2698 | *from = fr; |
08984293 | 2699 | if (to) |
1651e2c6 ZJS |
2700 | *to = t; |
2701 | found = true; | |
08984293 LP |
2702 | } |
2703 | } | |
2704 | ||
1651e2c6 | 2705 | return found; |
08984293 LP |
2706 | } |
2707 | ||
dca6219e LP |
2708 | void journal_print_header(sd_journal *j) { |
2709 | Iterator i; | |
2710 | JournalFile *f; | |
2711 | bool newline = false; | |
2712 | ||
2713 | assert(j); | |
2714 | ||
c1f906bd | 2715 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2716 | if (newline) |
2717 | putchar('\n'); | |
2718 | else | |
2719 | newline = true; | |
2720 | ||
2721 | journal_file_print_header(f); | |
2722 | } | |
2723 | } | |
08984293 | 2724 | |
a1a03e30 LP |
2725 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2726 | Iterator i; | |
2727 | JournalFile *f; | |
2728 | uint64_t sum = 0; | |
2729 | ||
1ae464e0 TA |
2730 | assert_return(j, -EINVAL); |
2731 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2732 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2733 | |
c1f906bd | 2734 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2735 | struct stat st; |
2736 | ||
2737 | if (fstat(f->fd, &st) < 0) | |
2738 | return -errno; | |
2739 | ||
2740 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2741 | } | |
2742 | ||
2743 | *bytes = sum; | |
2744 | return 0; | |
2745 | } | |
2746 | ||
3c1668da LP |
2747 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2748 | char *f; | |
2749 | ||
1ae464e0 TA |
2750 | assert_return(j, -EINVAL); |
2751 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2752 | assert_return(!isempty(field), -EINVAL); | |
2753 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2754 | |
2755 | f = strdup(field); | |
2756 | if (!f) | |
2757 | return -ENOMEM; | |
2758 | ||
2759 | free(j->unique_field); | |
2760 | j->unique_field = f; | |
2761 | j->unique_file = NULL; | |
2762 | j->unique_offset = 0; | |
360af4cf | 2763 | j->unique_file_lost = false; |
3c1668da LP |
2764 | |
2765 | return 0; | |
2766 | } | |
2767 | ||
2768 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2769 | size_t k; |
19a2bd80 | 2770 | |
1ae464e0 TA |
2771 | assert_return(j, -EINVAL); |
2772 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2773 | assert_return(data, -EINVAL); | |
2774 | assert_return(l, -EINVAL); | |
2775 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2776 | |
3c1668da | 2777 | k = strlen(j->unique_field); |
19a2bd80 | 2778 | |
3c1668da | 2779 | if (!j->unique_file) { |
360af4cf ZJS |
2780 | if (j->unique_file_lost) |
2781 | return 0; | |
2782 | ||
c1f906bd | 2783 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2784 | if (!j->unique_file) |
2785 | return 0; | |
360af4cf | 2786 | |
3c1668da LP |
2787 | j->unique_offset = 0; |
2788 | } | |
19a2bd80 | 2789 | |
3c1668da LP |
2790 | for (;;) { |
2791 | JournalFile *of; | |
2792 | Iterator i; | |
ae97089d | 2793 | Object *o; |
3c1668da LP |
2794 | const void *odata; |
2795 | size_t ol; | |
2796 | bool found; | |
ae97089d | 2797 | int r; |
3c1668da | 2798 | |
bdc02927 | 2799 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2800 | if (j->unique_offset == 0) { |
2801 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2802 | if (r < 0) | |
2803 | return r; | |
2804 | ||
2805 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2806 | } else { | |
2807 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2808 | if (r < 0) | |
2809 | return r; | |
2810 | ||
2811 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2812 | } | |
2813 | ||
2814 | /* We reached the end of the list? Then start again, with the next file */ | |
2815 | if (j->unique_offset == 0) { | |
c1f906bd | 2816 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2817 | if (!j->unique_file) |
3c1668da LP |
2818 | return 0; |
2819 | ||
3c1668da LP |
2820 | continue; |
2821 | } | |
2822 | ||
d05089d8 MS |
2823 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2824 | * instead, so that we can look at this data object at the same | |
3c1668da | 2825 | * time as one on another file */ |
d05089d8 | 2826 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2827 | if (r < 0) |
2828 | return r; | |
2829 | ||
2830 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2831 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2832 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2833 | j->unique_file->path, j->unique_offset, |
2834 | o->object.type, OBJECT_DATA); | |
3c1668da | 2835 | return -EBADMSG; |
ae97089d ZJS |
2836 | } |
2837 | ||
93b73b06 | 2838 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2839 | if (r < 0) |
2840 | return r; | |
2841 | ||
0f99f74a ZJS |
2842 | /* Check if we have at least the field name and "=". */ |
2843 | if (ol <= k) { | |
2844 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2845 | j->unique_file->path, j->unique_offset, | |
2846 | ol, k + 1); | |
2847 | return -EBADMSG; | |
2848 | } | |
2849 | ||
2850 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2851 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2852 | j->unique_file->path, j->unique_offset, | |
2853 | j->unique_field); | |
2854 | return -EBADMSG; | |
2855 | } | |
2856 | ||
3c1668da LP |
2857 | /* OK, now let's see if we already returned this data |
2858 | * object by checking if it exists in the earlier | |
2859 | * traversed files. */ | |
2860 | found = false; | |
c1f906bd | 2861 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2862 | if (of == j->unique_file) |
2863 | break; | |
2864 | ||
ed71f956 LP |
2865 | /* Skip this file it didn't have any fields indexed */ |
2866 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2867 | continue; |
2868 | ||
ed71f956 | 2869 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); |
3c1668da LP |
2870 | if (r < 0) |
2871 | return r; | |
ed71f956 | 2872 | if (r > 0) { |
3c1668da | 2873 | found = true; |
ed71f956 LP |
2874 | break; |
2875 | } | |
3c1668da LP |
2876 | } |
2877 | ||
06cc69d4 JJ |
2878 | if (found) |
2879 | continue; | |
2880 | ||
93b73b06 | 2881 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2882 | if (r < 0) |
2883 | return r; | |
2884 | ||
2885 | return 1; | |
2886 | } | |
2887 | } | |
2888 | ||
115646c7 | 2889 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2890 | if (!j) |
2891 | return; | |
2892 | ||
2893 | j->unique_file = NULL; | |
2894 | j->unique_offset = 0; | |
360af4cf | 2895 | j->unique_file_lost = false; |
3c1668da | 2896 | } |
85210bff | 2897 | |
eb86030e LP |
2898 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
2899 | int r; | |
2900 | ||
2901 | assert_return(j, -EINVAL); | |
2902 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2903 | assert_return(field, -EINVAL); | |
2904 | ||
2905 | if (!j->fields_file) { | |
2906 | if (j->fields_file_lost) | |
2907 | return 0; | |
2908 | ||
2909 | j->fields_file = ordered_hashmap_first(j->files); | |
2910 | if (!j->fields_file) | |
2911 | return 0; | |
2912 | ||
2913 | j->fields_hash_table_index = 0; | |
2914 | j->fields_offset = 0; | |
2915 | } | |
2916 | ||
2917 | for (;;) { | |
2918 | JournalFile *f, *of; | |
2919 | Iterator i; | |
2920 | uint64_t m; | |
2921 | Object *o; | |
2922 | size_t sz; | |
2923 | bool found; | |
2924 | ||
2925 | f = j->fields_file; | |
2926 | ||
2927 | if (j->fields_offset == 0) { | |
2928 | bool eof = false; | |
2929 | ||
2930 | /* We are not yet positioned at any field. Let's pick the first one */ | |
2931 | r = journal_file_map_field_hash_table(f); | |
2932 | if (r < 0) | |
2933 | return r; | |
2934 | ||
2935 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
2936 | for (;;) { | |
2937 | if (j->fields_hash_table_index >= m) { | |
2938 | /* Reached the end of the hash table, go to the next file. */ | |
2939 | eof = true; | |
2940 | break; | |
2941 | } | |
2942 | ||
2943 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
2944 | ||
2945 | if (j->fields_offset != 0) | |
2946 | break; | |
2947 | ||
2948 | /* Empty hash table bucket, go to next one */ | |
2949 | j->fields_hash_table_index++; | |
2950 | } | |
2951 | ||
2952 | if (eof) { | |
2953 | /* Proceed with next file */ | |
2954 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
2955 | if (!j->fields_file) { | |
2956 | *field = NULL; | |
2957 | return 0; | |
2958 | } | |
2959 | ||
2960 | j->fields_offset = 0; | |
2961 | j->fields_hash_table_index = 0; | |
2962 | continue; | |
2963 | } | |
2964 | ||
2965 | } else { | |
2966 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
2967 | ||
2968 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
2969 | if (r < 0) | |
2970 | return r; | |
2971 | ||
2972 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
2973 | if (j->fields_offset == 0) { | |
2974 | /* Reached the end of the hash table chain */ | |
2975 | j->fields_hash_table_index++; | |
2976 | continue; | |
2977 | } | |
2978 | } | |
2979 | ||
1f133e0d | 2980 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
2981 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
2982 | if (r < 0) | |
2983 | return r; | |
2984 | ||
2985 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
2986 | if (o->object.type != OBJECT_FIELD) { | |
2987 | log_debug("%s:offset " OFSfmt ": object has type %i, expected %i", f->path, j->fields_offset, o->object.type, OBJECT_FIELD); | |
2988 | return -EBADMSG; | |
2989 | } | |
2990 | ||
2991 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
2992 | ||
2993 | /* Let's see if we already returned this field name before. */ | |
2994 | found = false; | |
2995 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { | |
2996 | if (of == f) | |
2997 | break; | |
2998 | ||
2999 | /* Skip this file it didn't have any fields indexed */ | |
3000 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3001 | continue; | |
3002 | ||
3003 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, le64toh(o->field.hash), NULL, NULL); | |
3004 | if (r < 0) | |
3005 | return r; | |
3006 | if (r > 0) { | |
3007 | found = true; | |
3008 | break; | |
3009 | } | |
3010 | } | |
3011 | ||
3012 | if (found) | |
3013 | continue; | |
3014 | ||
3015 | /* Check if this is really a valid string containing no NUL byte */ | |
3016 | if (memchr(o->field.payload, 0, sz)) | |
3017 | return -EBADMSG; | |
3018 | ||
3019 | if (sz > j->data_threshold) | |
3020 | sz = j->data_threshold; | |
3021 | ||
3022 | if (!GREEDY_REALLOC(j->fields_buffer, j->fields_buffer_allocated, sz + 1)) | |
3023 | return -ENOMEM; | |
3024 | ||
3025 | memcpy(j->fields_buffer, o->field.payload, sz); | |
3026 | j->fields_buffer[sz] = 0; | |
3027 | ||
3028 | if (!field_is_valid(j->fields_buffer)) | |
3029 | return -EBADMSG; | |
3030 | ||
3031 | *field = j->fields_buffer; | |
3032 | return 1; | |
3033 | } | |
3034 | } | |
3035 | ||
3036 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
3037 | if (!j) | |
3038 | return; | |
3039 | ||
3040 | j->fields_file = NULL; | |
3041 | j->fields_hash_table_index = 0; | |
3042 | j->fields_offset = 0; | |
3043 | j->fields_file_lost = false; | |
3044 | } | |
3045 | ||
85210bff | 3046 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
3047 | assert_return(j, -EINVAL); |
3048 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
3049 | |
3050 | return !j->on_network; | |
3051 | } | |
d4205751 LP |
3052 | |
3053 | static char *lookup_field(const char *field, void *userdata) { | |
3054 | sd_journal *j = userdata; | |
3055 | const void *data; | |
3056 | size_t size, d; | |
3057 | int r; | |
3058 | ||
3059 | assert(field); | |
3060 | assert(j); | |
3061 | ||
3062 | r = sd_journal_get_data(j, field, &data, &size); | |
3063 | if (r < 0 || | |
3064 | size > REPLACE_VAR_MAX) | |
3065 | return strdup(field); | |
3066 | ||
3067 | d = strlen(field) + 1; | |
3068 | ||
3069 | return strndup((const char*) data + d, size - d); | |
3070 | } | |
3071 | ||
3072 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
3073 | const void *data; | |
3074 | size_t size; | |
3075 | sd_id128_t id; | |
3076 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
3077 | char *t; | |
3078 | int r; | |
3079 | ||
1ae464e0 TA |
3080 | assert_return(j, -EINVAL); |
3081 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3082 | assert_return(ret, -EINVAL); | |
d4205751 LP |
3083 | |
3084 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
3085 | if (r < 0) | |
3086 | return r; | |
3087 | ||
3088 | cid = strndup((const char*) data + 11, size - 11); | |
3089 | if (!cid) | |
3090 | return -ENOMEM; | |
3091 | ||
3092 | r = sd_id128_from_string(cid, &id); | |
3093 | if (r < 0) | |
3094 | return r; | |
3095 | ||
844ec79b | 3096 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
3097 | if (r < 0) |
3098 | return r; | |
3099 | ||
3100 | t = replace_var(text, lookup_field, j); | |
3101 | if (!t) | |
3102 | return -ENOMEM; | |
3103 | ||
3104 | *ret = t; | |
3105 | return 0; | |
3106 | } | |
8f1e860f LP |
3107 | |
3108 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 3109 | assert_return(ret, -EINVAL); |
8f1e860f | 3110 | |
844ec79b | 3111 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 3112 | } |
93b73b06 LP |
3113 | |
3114 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
3115 | assert_return(j, -EINVAL); |
3116 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
3117 | |
3118 | j->data_threshold = sz; | |
3119 | return 0; | |
3120 | } | |
3121 | ||
3122 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
3123 | assert_return(j, -EINVAL); |
3124 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3125 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
3126 | |
3127 | *sz = j->data_threshold; | |
3128 | return 0; | |
3129 | } | |
39fd5b08 JS |
3130 | |
3131 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
3132 | assert_return(j, -EINVAL); | |
3133 | ||
3134 | return j->has_runtime_files; | |
3135 | } | |
3136 | ||
3137 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
3138 | assert_return(j, -EINVAL); | |
3139 | ||
3140 | return j->has_persistent_files; | |
3141 | } |