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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 | ||
5302ebe1 | 1336 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
d617408e | 1337 | const char *path; |
5302ebe1 ZJS |
1338 | |
1339 | assert(j); | |
1340 | assert(prefix); | |
1341 | assert(filename); | |
1342 | ||
5d1ce257 | 1343 | if (j->no_new_files) |
5302ebe1 ZJS |
1344 | return 0; |
1345 | ||
5d1ce257 LP |
1346 | if (!file_type_wanted(j->flags, filename)) |
1347 | return 0; | |
39fd5b08 | 1348 | |
5d1ce257 LP |
1349 | path = strjoina(prefix, "/", filename); |
1350 | return add_any_file(j, -1, path); | |
5302ebe1 ZJS |
1351 | } |
1352 | ||
d617408e LP |
1353 | static void remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1354 | const char *path; | |
50f20cfd LP |
1355 | JournalFile *f; |
1356 | ||
1357 | assert(j); | |
1358 | assert(prefix); | |
1359 | assert(filename); | |
1360 | ||
d617408e | 1361 | path = strjoina(prefix, "/", filename); |
c1f906bd | 1362 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1363 | if (!f) |
d617408e | 1364 | return; |
50f20cfd | 1365 | |
a9a245c1 | 1366 | remove_file_real(j, f); |
a9a245c1 ZJS |
1367 | } |
1368 | ||
1369 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1370 | assert(j); | |
1371 | assert(f); | |
1372 | ||
c1f906bd | 1373 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1374 | |
5ec76417 | 1375 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1376 | |
3c1668da LP |
1377 | if (j->current_file == f) { |
1378 | j->current_file = NULL; | |
1379 | j->current_field = 0; | |
1380 | } | |
1381 | ||
1382 | if (j->unique_file == f) { | |
360af4cf | 1383 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1384 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1385 | j->unique_offset = 0; |
360af4cf ZJS |
1386 | if (!j->unique_file) |
1387 | j->unique_file_lost = true; | |
3c1668da LP |
1388 | } |
1389 | ||
eb86030e LP |
1390 | if (j->fields_file == f) { |
1391 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1392 | j->fields_offset = 0; | |
1393 | if (!j->fields_file) | |
1394 | j->fields_file_lost = true; | |
1395 | } | |
1396 | ||
69a3a6fd | 1397 | (void) journal_file_close(f); |
50f20cfd | 1398 | |
313cefa1 | 1399 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1400 | } |
1401 | ||
d617408e LP |
1402 | static int dirname_is_machine_id(const char *fn) { |
1403 | sd_id128_t id, machine; | |
1404 | int r; | |
1405 | ||
1406 | r = sd_id128_get_machine(&machine); | |
1407 | if (r < 0) | |
1408 | return r; | |
1409 | ||
1410 | r = sd_id128_from_string(fn, &id); | |
1411 | if (r < 0) | |
1412 | return r; | |
1413 | ||
1414 | return sd_id128_equal(id, machine); | |
1415 | } | |
1416 | ||
858749f7 LP |
1417 | static bool dirent_is_journal_file(const struct dirent *de) { |
1418 | assert(de); | |
1419 | ||
1420 | if (!IN_SET(de->d_type, DT_REG, DT_LNK, DT_UNKNOWN)) | |
1421 | return false; | |
1422 | ||
1423 | return endswith(de->d_name, ".journal") || | |
1424 | endswith(de->d_name, ".journal~"); | |
1425 | } | |
1426 | ||
1427 | static bool dirent_is_id128_subdir(const struct dirent *de) { | |
1428 | assert(de); | |
1429 | ||
1430 | if (!IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN)) | |
1431 | return false; | |
1432 | ||
1433 | return id128_is_valid(de->d_name); | |
1434 | } | |
1435 | ||
1436 | static int directory_open(sd_journal *j, const char *path, DIR **ret) { | |
1437 | DIR *d; | |
1438 | ||
1439 | assert(j); | |
1440 | assert(path); | |
1441 | assert(ret); | |
1442 | ||
1443 | if (j->toplevel_fd < 0) | |
1444 | d = opendir(path); | |
1445 | else | |
1446 | /* Open the specified directory relative to the toplevel fd. Enforce that the path specified is | |
1447 | * relative, by dropping the initial slash */ | |
1448 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
1449 | if (!d) | |
1450 | return -errno; | |
1451 | ||
1452 | *ret = d; | |
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname); | |
1457 | ||
1458 | static void directory_enumerate(sd_journal *j, Directory *m, DIR *d) { | |
1459 | struct dirent *de; | |
1460 | ||
1461 | assert(j); | |
1462 | assert(m); | |
1463 | assert(d); | |
1464 | ||
1465 | FOREACH_DIRENT_ALL(de, d, goto fail) { | |
1466 | if (dirent_is_journal_file(de)) | |
1467 | (void) add_file(j, m->path, de->d_name); | |
1468 | ||
1469 | if (m->is_root && dirent_is_id128_subdir(de)) | |
1470 | (void) add_directory(j, m->path, de->d_name); | |
1471 | } | |
1472 | ||
1473 | return; | |
1474 | ||
1475 | fail: | |
1476 | log_debug_errno(errno, "Failed to enumerate directory %s, ignoring: %m", m->path); | |
1477 | } | |
1478 | ||
1479 | static void directory_watch(sd_journal *j, Directory *m, int fd, uint32_t mask) { | |
1480 | int r; | |
1481 | ||
1482 | assert(j); | |
1483 | assert(m); | |
1484 | assert(fd >= 0); | |
1485 | ||
1486 | /* Watch this directory if that's enabled and if it not being watched yet. */ | |
1487 | ||
1488 | if (m->wd > 0) /* Already have a watch? */ | |
1489 | return; | |
1490 | if (j->inotify_fd < 0) /* Not watching at all? */ | |
1491 | return; | |
1492 | ||
1493 | m->wd = inotify_add_watch_fd(j->inotify_fd, fd, mask); | |
1494 | if (m->wd < 0) { | |
1495 | log_debug_errno(errno, "Failed to watch journal directory '%s', ignoring: %m", m->path); | |
1496 | return; | |
1497 | } | |
1498 | ||
1499 | r = hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m); | |
1500 | if (r == -EEXIST) | |
1501 | log_debug_errno(r, "Directory '%s' already being watched under a different path, ignoring: %m", m->path); | |
1502 | if (r < 0) { | |
1503 | log_debug_errno(r, "Failed to add watch for journal directory '%s' to hashmap, ignoring: %m", m->path); | |
1504 | (void) inotify_rm_watch(j->inotify_fd, m->wd); | |
1505 | m->wd = -1; | |
1506 | } | |
1507 | } | |
1508 | ||
a963990f | 1509 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1510 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1511 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1512 | Directory *m; |
d617408e | 1513 | int r, k; |
3fbf9cbb LP |
1514 | |
1515 | assert(j); | |
1516 | assert(prefix); | |
3fbf9cbb | 1517 | |
5d1ce257 LP |
1518 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1519 | * and reenumerates directory contents */ | |
d95b1fb3 | 1520 | |
5d1ce257 | 1521 | if (dirname) |
605405c6 | 1522 | path = strjoin(prefix, "/", dirname); |
5d1ce257 LP |
1523 | else |
1524 | path = strdup(prefix); | |
d617408e LP |
1525 | if (!path) { |
1526 | r = -ENOMEM; | |
1527 | goto fail; | |
1528 | } | |
3fbf9cbb | 1529 | |
858749f7 | 1530 | log_debug("Considering directory '%s'.", path); |
5d1ce257 LP |
1531 | |
1532 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1533 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1534 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
858749f7 | 1535 | return 0; |
5d1ce257 | 1536 | |
858749f7 LP |
1537 | r = directory_open(j, path, &d); |
1538 | if (r < 0) { | |
1539 | log_debug_errno(r, "Failed to open directory '%s': %m", path); | |
d617408e | 1540 | goto fail; |
3fbf9cbb LP |
1541 | } |
1542 | ||
a963990f LP |
1543 | m = hashmap_get(j->directories_by_path, path); |
1544 | if (!m) { | |
1545 | m = new0(Directory, 1); | |
d617408e LP |
1546 | if (!m) { |
1547 | r = -ENOMEM; | |
1548 | goto fail; | |
1549 | } | |
a963990f LP |
1550 | |
1551 | m->is_root = false; | |
1552 | m->path = path; | |
1553 | ||
1554 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1555 | free(m); |
d617408e LP |
1556 | r = -ENOMEM; |
1557 | goto fail; | |
a963990f LP |
1558 | } |
1559 | ||
a50d7d43 | 1560 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1561 | j->current_invalidate_counter++; |
a963990f | 1562 | |
5ec76417 | 1563 | log_debug("Directory %s added.", m->path); |
a963990f | 1564 | |
a50d7d43 | 1565 | } else if (m->is_root) |
858749f7 | 1566 | return 0; /* Don't 'downgrade' from root directory */ |
a963990f | 1567 | |
858749f7 | 1568 | m->last_seen_generation = j->generation; |
a963990f | 1569 | |
858749f7 LP |
1570 | directory_watch(j, m, dirfd(d), |
1571 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1572 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1573 | IN_ONLYDIR); | |
a963990f | 1574 | |
858749f7 LP |
1575 | if (!j->no_new_files) |
1576 | directory_enumerate(j, m, d); | |
a963990f | 1577 | |
85210bff LP |
1578 | check_network(j, dirfd(d)); |
1579 | ||
a963990f | 1580 | return 0; |
d617408e LP |
1581 | |
1582 | fail: | |
5d1ce257 | 1583 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1584 | if (k < 0) |
1585 | return k; | |
1586 | ||
1587 | return r; | |
a963990f LP |
1588 | } |
1589 | ||
d617408e | 1590 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1591 | |
7fd1b19b | 1592 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1593 | Directory *m; |
d617408e | 1594 | int r, k; |
a963990f LP |
1595 | |
1596 | assert(j); | |
a963990f | 1597 | |
5d1ce257 LP |
1598 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1599 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1600 | * populate the set, as well as to update it later. */ | |
a963990f | 1601 | |
5d1ce257 LP |
1602 | if (p) { |
1603 | /* If there's a path specified, use it. */ | |
b6741478 | 1604 | |
858749f7 LP |
1605 | log_debug("Considering root directory '%s'.", p); |
1606 | ||
5d1ce257 LP |
1607 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1608 | !path_has_prefix(j, p, "/run")) | |
1609 | return -EINVAL; | |
d617408e | 1610 | |
5d1ce257 LP |
1611 | if (j->prefix) |
1612 | p = strjoina(j->prefix, p); | |
1613 | ||
858749f7 LP |
1614 | r = directory_open(j, p, &d); |
1615 | if (r == -ENOENT && missing_ok) | |
1616 | return 0; | |
1617 | if (r < 0) { | |
1618 | log_debug_errno(r, "Failed to open root directory %s: %m", p); | |
5d1ce257 LP |
1619 | goto fail; |
1620 | } | |
1621 | } else { | |
1622 | int dfd; | |
1623 | ||
1624 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1625 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1626 | ||
1627 | p = "."; /* store this as "." in the directories hashmap */ | |
1628 | ||
1629 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1630 | if (dfd < 0) { | |
1631 | r = -errno; | |
1632 | goto fail; | |
1633 | } | |
1634 | ||
1635 | d = fdopendir(dfd); | |
1636 | if (!d) { | |
1637 | r = -errno; | |
1638 | safe_close(dfd); | |
1639 | goto fail; | |
1640 | } | |
1641 | ||
1642 | rewinddir(d); | |
d617408e | 1643 | } |
a963990f LP |
1644 | |
1645 | m = hashmap_get(j->directories_by_path, p); | |
1646 | if (!m) { | |
1647 | m = new0(Directory, 1); | |
d617408e LP |
1648 | if (!m) { |
1649 | r = -ENOMEM; | |
1650 | goto fail; | |
1651 | } | |
a963990f LP |
1652 | |
1653 | m->is_root = true; | |
5d1ce257 | 1654 | |
a963990f LP |
1655 | m->path = strdup(p); |
1656 | if (!m->path) { | |
a963990f | 1657 | free(m); |
d617408e LP |
1658 | r = -ENOMEM; |
1659 | goto fail; | |
a963990f LP |
1660 | } |
1661 | ||
1662 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1663 | free(m->path); |
1664 | free(m); | |
d617408e LP |
1665 | r = -ENOMEM; |
1666 | goto fail; | |
a963990f LP |
1667 | } |
1668 | ||
313cefa1 | 1669 | j->current_invalidate_counter++; |
a963990f | 1670 | |
5ec76417 | 1671 | log_debug("Root directory %s added.", m->path); |
a963990f | 1672 | |
a50d7d43 | 1673 | } else if (!m->is_root) |
a963990f | 1674 | return 0; |
50f20cfd | 1675 | |
858749f7 LP |
1676 | directory_watch(j, m, dirfd(d), |
1677 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1678 | IN_ONLYDIR); | |
a963990f | 1679 | |
858749f7 LP |
1680 | if (!j->no_new_files) |
1681 | directory_enumerate(j, m, d); | |
3fbf9cbb | 1682 | |
85210bff LP |
1683 | check_network(j, dirfd(d)); |
1684 | ||
a963990f | 1685 | return 0; |
d617408e LP |
1686 | |
1687 | fail: | |
5768d259 | 1688 | k = journal_put_error(j, r, p); |
d617408e LP |
1689 | if (k < 0) |
1690 | return k; | |
1691 | ||
1692 | return r; | |
a963990f LP |
1693 | } |
1694 | ||
b2b46f91 | 1695 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1696 | assert(j); |
1697 | ||
1698 | if (d->wd > 0) { | |
1699 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1700 | ||
1701 | if (j->inotify_fd >= 0) | |
1702 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1703 | } | |
1704 | ||
1705 | hashmap_remove(j->directories_by_path, d->path); | |
1706 | ||
1707 | if (d->is_root) | |
5ec76417 | 1708 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1709 | else |
5ec76417 | 1710 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1711 | |
1712 | free(d->path); | |
1713 | free(d); | |
3fbf9cbb LP |
1714 | } |
1715 | ||
89739579 | 1716 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1717 | |
1718 | static const char search_paths[] = | |
a963990f LP |
1719 | "/run/log/journal\0" |
1720 | "/var/log/journal\0"; | |
1721 | const char *p; | |
50f20cfd LP |
1722 | |
1723 | assert(j); | |
50f20cfd | 1724 | |
a963990f LP |
1725 | /* We ignore most errors here, since the idea is to only open |
1726 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1727 | |
d617408e LP |
1728 | NULSTR_FOREACH(p, search_paths) |
1729 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1730 | |
574b77ef MB |
1731 | if (!(j->flags & SD_JOURNAL_LOCAL_ONLY)) |
1732 | (void) add_root_directory(j, "/var/log/journal/remote", true); | |
1733 | ||
a963990f | 1734 | return 0; |
50f20cfd LP |
1735 | } |
1736 | ||
5302ebe1 ZJS |
1737 | static int add_current_paths(sd_journal *j) { |
1738 | Iterator i; | |
1739 | JournalFile *f; | |
1740 | ||
1741 | assert(j); | |
1742 | assert(j->no_new_files); | |
1743 | ||
5d1ce257 | 1744 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1745 | * treat them as fatal. */ |
1746 | ||
c1f906bd | 1747 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1748 | _cleanup_free_ char *dir; |
e9174f29 | 1749 | int r; |
5302ebe1 ZJS |
1750 | |
1751 | dir = dirname_malloc(f->path); | |
1752 | if (!dir) | |
1753 | return -ENOMEM; | |
1754 | ||
5d1ce257 | 1755 | r = add_directory(j, dir, NULL); |
d617408e | 1756 | if (r < 0) |
5302ebe1 | 1757 | return r; |
5302ebe1 ZJS |
1758 | } |
1759 | ||
1760 | return 0; | |
1761 | } | |
1762 | ||
a963990f | 1763 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1764 | assert(j); |
50f20cfd | 1765 | |
a963990f LP |
1766 | if (j->inotify_fd < 0) { |
1767 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1768 | if (j->inotify_fd < 0) | |
1769 | return -errno; | |
1770 | } | |
50f20cfd | 1771 | |
cb306f5d | 1772 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
1773 | } |
1774 | ||
7827b1a1 | 1775 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1776 | sd_journal *j; |
50f20cfd | 1777 | |
a963990f LP |
1778 | j = new0(sd_journal, 1); |
1779 | if (!j) | |
1780 | return NULL; | |
50f20cfd | 1781 | |
df0ff127 | 1782 | j->original_pid = getpid_cached(); |
5d1ce257 | 1783 | j->toplevel_fd = -1; |
a963990f LP |
1784 | j->inotify_fd = -1; |
1785 | j->flags = flags; | |
93b73b06 | 1786 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1787 | |
7827b1a1 | 1788 | if (path) { |
16fefe90 ZJS |
1789 | char *t; |
1790 | ||
1791 | t = strdup(path); | |
1792 | if (!t) | |
6180fc61 | 1793 | goto fail; |
16fefe90 ZJS |
1794 | |
1795 | if (flags & SD_JOURNAL_OS_ROOT) | |
1796 | j->prefix = t; | |
1797 | else | |
1798 | j->path = t; | |
7827b1a1 LP |
1799 | } |
1800 | ||
548f6937 | 1801 | j->files = ordered_hashmap_new(&path_hash_ops); |
5d4ba7f2 VC |
1802 | if (!j->files) |
1803 | goto fail; | |
1804 | ||
1805 | j->files_cache = ordered_hashmap_iterated_cache_new(j->files); | |
548f6937 | 1806 | j->directories_by_path = hashmap_new(&path_hash_ops); |
84168d80 | 1807 | j->mmap = mmap_cache_new(); |
5d4ba7f2 | 1808 | if (!j->files_cache || !j->directories_by_path || !j->mmap) |
6180fc61 | 1809 | goto fail; |
16e9f408 | 1810 | |
a963990f | 1811 | return j; |
6180fc61 ZJS |
1812 | |
1813 | fail: | |
1814 | sd_journal_close(j); | |
1815 | return NULL; | |
50f20cfd LP |
1816 | } |
1817 | ||
1aaa68f5 ZJS |
1818 | #define OPEN_ALLOWED_FLAGS \ |
1819 | (SD_JOURNAL_LOCAL_ONLY | \ | |
1820 | SD_JOURNAL_RUNTIME_ONLY | \ | |
1821 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER) | |
1822 | ||
a5344d2c | 1823 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1824 | sd_journal *j; |
3fbf9cbb | 1825 | int r; |
87d2c1ff | 1826 | |
1ae464e0 | 1827 | assert_return(ret, -EINVAL); |
1aaa68f5 | 1828 | assert_return((flags & ~OPEN_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1829 | |
7827b1a1 | 1830 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1831 | if (!j) |
1832 | return -ENOMEM; | |
1833 | ||
89739579 | 1834 | r = add_search_paths(j); |
a963990f | 1835 | if (r < 0) |
50f20cfd | 1836 | goto fail; |
50f20cfd | 1837 | |
a963990f LP |
1838 | *ret = j; |
1839 | return 0; | |
cf244689 | 1840 | |
a963990f LP |
1841 | fail: |
1842 | sd_journal_close(j); | |
87d2c1ff | 1843 | |
a963990f LP |
1844 | return r; |
1845 | } | |
50f20cfd | 1846 | |
1aaa68f5 ZJS |
1847 | #define OPEN_CONTAINER_ALLOWED_FLAGS \ |
1848 | (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM) | |
1849 | ||
b6741478 LP |
1850 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1851 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1852 | sd_journal *j; | |
1853 | char *p; | |
1854 | int r; | |
1855 | ||
2daa9cbd LP |
1856 | /* This is pretty much deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
1857 | * combination with sd_journal_open_directory_fd(). */ | |
1858 | ||
b6741478 LP |
1859 | assert_return(machine, -EINVAL); |
1860 | assert_return(ret, -EINVAL); | |
1aaa68f5 | 1861 | assert_return((flags & ~OPEN_CONTAINER_ALLOWED_FLAGS) == 0, -EINVAL); |
affcf189 | 1862 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1863 | |
63c372cb | 1864 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1865 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1866 | if (r == -ENOENT) | |
1867 | return -EHOSTDOWN; | |
1868 | if (r < 0) | |
1869 | return r; | |
1870 | if (!root) | |
1871 | return -ENODATA; | |
1872 | ||
1873 | if (!streq_ptr(class, "container")) | |
1874 | return -EIO; | |
1875 | ||
16fefe90 | 1876 | j = journal_new(flags, root); |
b6741478 LP |
1877 | if (!j) |
1878 | return -ENOMEM; | |
1879 | ||
89739579 | 1880 | r = add_search_paths(j); |
b6741478 LP |
1881 | if (r < 0) |
1882 | goto fail; | |
1883 | ||
1884 | *ret = j; | |
1885 | return 0; | |
1886 | ||
1887 | fail: | |
1888 | sd_journal_close(j); | |
1889 | return r; | |
1890 | } | |
1891 | ||
1aaa68f5 | 1892 | #define OPEN_DIRECTORY_ALLOWED_FLAGS \ |
10752e82 ZJS |
1893 | (SD_JOURNAL_OS_ROOT | \ |
1894 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 1895 | |
a963990f LP |
1896 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1897 | sd_journal *j; | |
1898 | int r; | |
87d2c1ff | 1899 | |
1ae464e0 TA |
1900 | assert_return(ret, -EINVAL); |
1901 | assert_return(path, -EINVAL); | |
1aaa68f5 | 1902 | assert_return((flags & ~OPEN_DIRECTORY_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1903 | |
7827b1a1 | 1904 | j = journal_new(flags, path); |
a963990f LP |
1905 | if (!j) |
1906 | return -ENOMEM; | |
3fbf9cbb | 1907 | |
d077390c LP |
1908 | if (flags & SD_JOURNAL_OS_ROOT) |
1909 | r = add_search_paths(j); | |
1910 | else | |
1911 | r = add_root_directory(j, path, false); | |
d617408e | 1912 | if (r < 0) |
a963990f | 1913 | goto fail; |
87d2c1ff LP |
1914 | |
1915 | *ret = j; | |
1916 | return 0; | |
1917 | ||
1918 | fail: | |
1919 | sd_journal_close(j); | |
87d2c1ff | 1920 | return r; |
a963990f | 1921 | } |
87d2c1ff | 1922 | |
5302ebe1 ZJS |
1923 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1924 | sd_journal *j; | |
1925 | const char **path; | |
1926 | int r; | |
1927 | ||
1ae464e0 TA |
1928 | assert_return(ret, -EINVAL); |
1929 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1930 | |
1931 | j = journal_new(flags, NULL); | |
1932 | if (!j) | |
1933 | return -ENOMEM; | |
1934 | ||
1935 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 1936 | r = add_any_file(j, -1, *path); |
d617408e | 1937 | if (r < 0) |
5302ebe1 | 1938 | goto fail; |
5302ebe1 ZJS |
1939 | } |
1940 | ||
1941 | j->no_new_files = true; | |
1942 | ||
1943 | *ret = j; | |
1944 | return 0; | |
1945 | ||
1946 | fail: | |
1947 | sd_journal_close(j); | |
5d1ce257 LP |
1948 | return r; |
1949 | } | |
1950 | ||
1aaa68f5 | 1951 | #define OPEN_DIRECTORY_FD_ALLOWED_FLAGS \ |
10752e82 ZJS |
1952 | (SD_JOURNAL_OS_ROOT | \ |
1953 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 1954 | |
5d1ce257 LP |
1955 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { |
1956 | sd_journal *j; | |
1957 | struct stat st; | |
1958 | int r; | |
1959 | ||
1960 | assert_return(ret, -EINVAL); | |
1961 | assert_return(fd >= 0, -EBADF); | |
1aaa68f5 | 1962 | assert_return((flags & ~OPEN_DIRECTORY_FD_ALLOWED_FLAGS) == 0, -EINVAL); |
5d1ce257 LP |
1963 | |
1964 | if (fstat(fd, &st) < 0) | |
1965 | return -errno; | |
1966 | ||
1967 | if (!S_ISDIR(st.st_mode)) | |
1968 | return -EBADFD; | |
1969 | ||
1970 | j = journal_new(flags, NULL); | |
1971 | if (!j) | |
1972 | return -ENOMEM; | |
1973 | ||
1974 | j->toplevel_fd = fd; | |
1975 | ||
d077390c LP |
1976 | if (flags & SD_JOURNAL_OS_ROOT) |
1977 | r = add_search_paths(j); | |
1978 | else | |
1979 | r = add_root_directory(j, NULL, false); | |
5d1ce257 LP |
1980 | if (r < 0) |
1981 | goto fail; | |
1982 | ||
1983 | *ret = j; | |
1984 | return 0; | |
1985 | ||
1986 | fail: | |
1987 | sd_journal_close(j); | |
1988 | return r; | |
1989 | } | |
1990 | ||
1991 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
1992 | Iterator iterator; | |
1993 | JournalFile *f; | |
1994 | sd_journal *j; | |
1995 | unsigned i; | |
1996 | int r; | |
1997 | ||
1998 | assert_return(ret, -EINVAL); | |
1999 | assert_return(n_fds > 0, -EBADF); | |
2000 | assert_return(flags == 0, -EINVAL); | |
2001 | ||
2002 | j = journal_new(flags, NULL); | |
2003 | if (!j) | |
2004 | return -ENOMEM; | |
2005 | ||
2006 | for (i = 0; i < n_fds; i++) { | |
2007 | struct stat st; | |
2008 | ||
2009 | if (fds[i] < 0) { | |
2010 | r = -EBADF; | |
2011 | goto fail; | |
2012 | } | |
2013 | ||
2014 | if (fstat(fds[i], &st) < 0) { | |
2015 | r = -errno; | |
2016 | goto fail; | |
2017 | } | |
2018 | ||
8d6a4d33 LP |
2019 | if (S_ISDIR(st.st_mode)) { |
2020 | r = -EISDIR; | |
2021 | goto fail; | |
2022 | } | |
5d1ce257 LP |
2023 | if (!S_ISREG(st.st_mode)) { |
2024 | r = -EBADFD; | |
2025 | goto fail; | |
2026 | } | |
2027 | ||
2028 | r = add_any_file(j, fds[i], NULL); | |
2029 | if (r < 0) | |
2030 | goto fail; | |
2031 | } | |
2032 | ||
2033 | j->no_new_files = true; | |
2034 | j->no_inotify = true; | |
5302ebe1 | 2035 | |
5d1ce257 LP |
2036 | *ret = j; |
2037 | return 0; | |
2038 | ||
2039 | fail: | |
f8e2f4d6 | 2040 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 LP |
2041 | * remain open */ |
2042 | ORDERED_HASHMAP_FOREACH(f, j->files, iterator) | |
2043 | f->close_fd = false; | |
2044 | ||
2045 | sd_journal_close(j); | |
5302ebe1 ZJS |
2046 | return r; |
2047 | } | |
2048 | ||
a5344d2c | 2049 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f | 2050 | Directory *d; |
a963990f | 2051 | |
a5344d2c LP |
2052 | if (!j) |
2053 | return; | |
87d2c1ff | 2054 | |
54b1da83 LP |
2055 | sd_journal_flush_matches(j); |
2056 | ||
f9168190 | 2057 | ordered_hashmap_free_with_destructor(j->files, journal_file_close); |
5d4ba7f2 | 2058 | iterated_cache_free(j->files_cache); |
260a2be4 | 2059 | |
a963990f LP |
2060 | while ((d = hashmap_first(j->directories_by_path))) |
2061 | remove_directory(j, d); | |
260a2be4 | 2062 | |
a963990f LP |
2063 | while ((d = hashmap_first(j->directories_by_wd))) |
2064 | remove_directory(j, d); | |
87d2c1ff | 2065 | |
a963990f LP |
2066 | hashmap_free(j->directories_by_path); |
2067 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 2068 | |
03e334a1 | 2069 | safe_close(j->inotify_fd); |
50f20cfd | 2070 | |
bf807d4d LP |
2071 | if (j->mmap) { |
2072 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 2073 | mmap_cache_unref(j->mmap); |
bf807d4d | 2074 | } |
16e9f408 | 2075 | |
ec1d2909 | 2076 | hashmap_free_free(j->errors); |
5768d259 | 2077 | |
7827b1a1 | 2078 | free(j->path); |
89739579 | 2079 | free(j->prefix); |
3c1668da | 2080 | free(j->unique_field); |
eb86030e | 2081 | free(j->fields_buffer); |
87d2c1ff LP |
2082 | free(j); |
2083 | } | |
3fbf9cbb | 2084 | |
a5344d2c | 2085 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
2086 | Object *o; |
2087 | JournalFile *f; | |
2088 | int r; | |
2089 | ||
1ae464e0 TA |
2090 | assert_return(j, -EINVAL); |
2091 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2092 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
2093 | |
2094 | f = j->current_file; | |
2095 | if (!f) | |
de190aef | 2096 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2097 | |
2098 | if (f->current_offset <= 0) | |
de190aef | 2099 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2100 | |
de190aef | 2101 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2102 | if (r < 0) |
2103 | return r; | |
2104 | ||
2105 | *ret = le64toh(o->entry.realtime); | |
de190aef | 2106 | return 0; |
3fbf9cbb LP |
2107 | } |
2108 | ||
a5344d2c | 2109 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
2110 | Object *o; |
2111 | JournalFile *f; | |
2112 | int r; | |
2113 | sd_id128_t id; | |
2114 | ||
1ae464e0 TA |
2115 | assert_return(j, -EINVAL); |
2116 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
2117 | |
2118 | f = j->current_file; | |
2119 | if (!f) | |
de190aef | 2120 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2121 | |
2122 | if (f->current_offset <= 0) | |
de190aef | 2123 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2124 | |
de190aef | 2125 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2126 | if (r < 0) |
2127 | return r; | |
2128 | ||
de190aef LP |
2129 | if (ret_boot_id) |
2130 | *ret_boot_id = o->entry.boot_id; | |
2131 | else { | |
2132 | r = sd_id128_get_boot(&id); | |
2133 | if (r < 0) | |
2134 | return r; | |
3fbf9cbb | 2135 | |
de190aef | 2136 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2137 | return -ESTALE; |
de190aef | 2138 | } |
3fbf9cbb | 2139 | |
14a65d65 LP |
2140 | if (ret) |
2141 | *ret = le64toh(o->entry.monotonic); | |
2142 | ||
de190aef | 2143 | return 0; |
3fbf9cbb LP |
2144 | } |
2145 | ||
362a3f81 LP |
2146 | static bool field_is_valid(const char *field) { |
2147 | const char *p; | |
2148 | ||
2149 | assert(field); | |
2150 | ||
2151 | if (isempty(field)) | |
2152 | return false; | |
2153 | ||
2154 | if (startswith(field, "__")) | |
2155 | return false; | |
2156 | ||
2157 | for (p = field; *p; p++) { | |
2158 | ||
2159 | if (*p == '_') | |
2160 | continue; | |
2161 | ||
2162 | if (*p >= 'A' && *p <= 'Z') | |
2163 | continue; | |
2164 | ||
2165 | if (*p >= '0' && *p <= '9') | |
2166 | continue; | |
2167 | ||
2168 | return false; | |
2169 | } | |
2170 | ||
2171 | return true; | |
2172 | } | |
2173 | ||
a5344d2c | 2174 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
2175 | JournalFile *f; |
2176 | uint64_t i, n; | |
2177 | size_t field_length; | |
2178 | int r; | |
2179 | Object *o; | |
2180 | ||
1ae464e0 TA |
2181 | assert_return(j, -EINVAL); |
2182 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2183 | assert_return(field, -EINVAL); | |
2184 | assert_return(data, -EINVAL); | |
2185 | assert_return(size, -EINVAL); | |
2186 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2187 | |
2188 | f = j->current_file; | |
2189 | if (!f) | |
de190aef | 2190 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2191 | |
2192 | if (f->current_offset <= 0) | |
de190aef | 2193 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2194 | |
de190aef | 2195 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2196 | if (r < 0) |
2197 | return r; | |
2198 | ||
2199 | field_length = strlen(field); | |
2200 | ||
2201 | n = journal_file_entry_n_items(o); | |
2202 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2203 | uint64_t p, l; |
2204 | le64_t le_hash; | |
3fbf9cbb | 2205 | size_t t; |
1ec7120e | 2206 | int compression; |
3fbf9cbb LP |
2207 | |
2208 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 2209 | le_hash = o->entry.items[i].hash; |
de190aef | 2210 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
2211 | if (r < 0) |
2212 | return r; | |
2213 | ||
de190aef | 2214 | if (le_hash != o->data.hash) |
de7b95cd LP |
2215 | return -EBADMSG; |
2216 | ||
3fbf9cbb LP |
2217 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
2218 | ||
1ec7120e | 2219 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 | 2220 | if (compression) { |
349cc4a5 | 2221 | #if HAVE_XZ || HAVE_LZ4 |
2aaec9b4 | 2222 | r = decompress_startswith(compression, |
3b1a55e1 ZJS |
2223 | o->data.payload, l, |
2224 | &f->compress_buffer, &f->compress_buffer_size, | |
2aaec9b4 ZJS |
2225 | field, field_length, '='); |
2226 | if (r < 0) | |
82e24b00 | 2227 | log_debug_errno(r, "Cannot decompress %s object of length %"PRIu64" at offset "OFSfmt": %m", |
2aaec9b4 ZJS |
2228 | object_compressed_to_string(compression), l, p); |
2229 | else if (r > 0) { | |
3b1a55e1 | 2230 | |
fa1c4b51 | 2231 | size_t rsize; |
3b1a55e1 ZJS |
2232 | |
2233 | r = decompress_blob(compression, | |
2234 | o->data.payload, l, | |
2235 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
2236 | j->data_threshold); | |
2237 | if (r < 0) | |
2238 | return r; | |
807e17f0 | 2239 | |
3b1a55e1 ZJS |
2240 | *data = f->compress_buffer; |
2241 | *size = (size_t) rsize; | |
807e17f0 | 2242 | |
3b1a55e1 ZJS |
2243 | return 0; |
2244 | } | |
2245 | #else | |
2246 | return -EPROTONOSUPPORT; | |
2247 | #endif | |
807e17f0 LP |
2248 | } else if (l >= field_length+1 && |
2249 | memcmp(o->data.payload, field, field_length) == 0 && | |
2250 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2251 | |
161e54f8 | 2252 | t = (size_t) l; |
3fbf9cbb | 2253 | |
161e54f8 LP |
2254 | if ((uint64_t) t != l) |
2255 | return -E2BIG; | |
3fbf9cbb | 2256 | |
161e54f8 LP |
2257 | *data = o->data.payload; |
2258 | *size = t; | |
3fbf9cbb | 2259 | |
99613ec5 | 2260 | return 0; |
161e54f8 | 2261 | } |
3fbf9cbb | 2262 | |
de190aef | 2263 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2264 | if (r < 0) |
2265 | return r; | |
3fbf9cbb LP |
2266 | } |
2267 | ||
de190aef | 2268 | return -ENOENT; |
3fbf9cbb LP |
2269 | } |
2270 | ||
93b73b06 | 2271 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2272 | size_t t; |
2273 | uint64_t l; | |
3b1a55e1 | 2274 | int compression; |
3c1668da LP |
2275 | |
2276 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2277 | t = (size_t) l; | |
2278 | ||
2279 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2280 | if ((uint64_t) t != l) | |
2281 | return -E2BIG; | |
2282 | ||
1ec7120e ZJS |
2283 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2284 | if (compression) { | |
349cc4a5 | 2285 | #if HAVE_XZ || HAVE_LZ4 |
fa1c4b51 | 2286 | size_t rsize; |
3b1a55e1 | 2287 | int r; |
3c1668da | 2288 | |
1ec7120e ZJS |
2289 | r = decompress_blob(compression, |
2290 | o->data.payload, l, &f->compress_buffer, | |
2291 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2292 | if (r < 0) | |
2293 | return r; | |
3c1668da LP |
2294 | |
2295 | *data = f->compress_buffer; | |
2296 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2297 | #else |
2298 | return -EPROTONOSUPPORT; | |
2299 | #endif | |
3c1668da LP |
2300 | } else { |
2301 | *data = o->data.payload; | |
2302 | *size = t; | |
2303 | } | |
2304 | ||
2305 | return 0; | |
2306 | } | |
2307 | ||
a5344d2c | 2308 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2309 | JournalFile *f; |
3c1668da | 2310 | uint64_t p, n; |
4fd052ae | 2311 | le64_t le_hash; |
3fbf9cbb LP |
2312 | int r; |
2313 | Object *o; | |
2314 | ||
1ae464e0 TA |
2315 | assert_return(j, -EINVAL); |
2316 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2317 | assert_return(data, -EINVAL); | |
2318 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2319 | |
2320 | f = j->current_file; | |
2321 | if (!f) | |
de190aef | 2322 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2323 | |
2324 | if (f->current_offset <= 0) | |
de190aef | 2325 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2326 | |
de190aef | 2327 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2328 | if (r < 0) |
2329 | return r; | |
2330 | ||
2331 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2332 | if (j->current_field >= n) |
3fbf9cbb LP |
2333 | return 0; |
2334 | ||
7210bfb3 | 2335 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2336 | le_hash = o->entry.items[j->current_field].hash; |
2337 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2338 | if (r < 0) |
2339 | return r; | |
2340 | ||
de190aef | 2341 | if (le_hash != o->data.hash) |
de7b95cd LP |
2342 | return -EBADMSG; |
2343 | ||
93b73b06 | 2344 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2345 | if (r < 0) |
2346 | return r; | |
3fbf9cbb | 2347 | |
313cefa1 | 2348 | j->current_field++; |
3fbf9cbb LP |
2349 | |
2350 | return 1; | |
2351 | } | |
c2373f84 | 2352 | |
a5344d2c LP |
2353 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2354 | if (!j) | |
2355 | return; | |
8725d60a LP |
2356 | |
2357 | j->current_field = 0; | |
c2373f84 | 2358 | } |
50f20cfd | 2359 | |
858749f7 LP |
2360 | static int reiterate_all_paths(sd_journal *j) { |
2361 | assert(j); | |
2362 | ||
2363 | if (j->no_new_files) | |
2364 | return add_current_paths(j); | |
2365 | ||
2366 | if (j->flags & SD_JOURNAL_OS_ROOT) | |
2367 | return add_search_paths(j); | |
2368 | ||
2369 | if (j->toplevel_fd >= 0) | |
2370 | return add_root_directory(j, NULL, false); | |
2371 | ||
2372 | if (j->path) | |
2373 | return add_root_directory(j, j->path, true); | |
2374 | ||
2375 | return add_search_paths(j); | |
2376 | } | |
2377 | ||
a5344d2c | 2378 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2379 | int r; |
2380 | ||
1ae464e0 TA |
2381 | assert_return(j, -EINVAL); |
2382 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2383 | |
5d1ce257 LP |
2384 | if (j->no_inotify) |
2385 | return -EMEDIUMTYPE; | |
2386 | ||
a963990f LP |
2387 | if (j->inotify_fd >= 0) |
2388 | return j->inotify_fd; | |
2389 | ||
2390 | r = allocate_inotify(j); | |
2391 | if (r < 0) | |
2392 | return r; | |
2393 | ||
858749f7 | 2394 | log_debug("Reiterating files to get inotify watches established."); |
5d1ce257 | 2395 | |
858749f7 LP |
2396 | /* Iterate through all dirs again, to add them to the inotify */ |
2397 | r = reiterate_all_paths(j); | |
a963990f LP |
2398 | if (r < 0) |
2399 | return r; | |
2400 | ||
50f20cfd LP |
2401 | return j->inotify_fd; |
2402 | } | |
2403 | ||
ee531d94 LP |
2404 | _public_ int sd_journal_get_events(sd_journal *j) { |
2405 | int fd; | |
2406 | ||
1ae464e0 TA |
2407 | assert_return(j, -EINVAL); |
2408 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2409 | |
2410 | fd = sd_journal_get_fd(j); | |
2411 | if (fd < 0) | |
2412 | return fd; | |
2413 | ||
2414 | return POLLIN; | |
2415 | } | |
2416 | ||
39c155ea LP |
2417 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2418 | int fd; | |
2419 | ||
1ae464e0 TA |
2420 | assert_return(j, -EINVAL); |
2421 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2422 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2423 | |
2424 | fd = sd_journal_get_fd(j); | |
2425 | if (fd < 0) | |
2426 | return fd; | |
2427 | ||
2428 | if (!j->on_network) { | |
2429 | *timeout_usec = (uint64_t) -1; | |
2430 | return 0; | |
2431 | } | |
2432 | ||
2433 | /* If we are on the network we need to regularly check for | |
2434 | * changes manually */ | |
2435 | ||
2436 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2437 | return 1; | |
2438 | } | |
2439 | ||
858749f7 LP |
2440 | static void process_q_overflow(sd_journal *j) { |
2441 | JournalFile *f; | |
2442 | Directory *m; | |
2443 | Iterator i; | |
2444 | ||
2445 | assert(j); | |
2446 | ||
2447 | /* When the inotify queue overruns we need to enumerate and re-validate all journal files to bring our list | |
2448 | * back in sync with what's on disk. For this we pick a new generation counter value. It'll be assigned to all | |
2449 | * journal files we encounter. All journal files and all directories that don't carry it after reenumeration | |
2450 | * are subject for unloading. */ | |
2451 | ||
2452 | log_debug("Inotify queue overrun, reiterating everything."); | |
2453 | ||
2454 | j->generation++; | |
2455 | (void) reiterate_all_paths(j); | |
2456 | ||
2457 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { | |
2458 | ||
2459 | if (f->last_seen_generation == j->generation) | |
2460 | continue; | |
2461 | ||
2462 | log_debug("File '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2463 | remove_file_real(j, f); | |
2464 | } | |
2465 | ||
2466 | HASHMAP_FOREACH(m, j->directories_by_path, i) { | |
2467 | ||
2468 | if (m->last_seen_generation == j->generation) | |
2469 | continue; | |
2470 | ||
2471 | if (m->is_root) /* Never GC root directories */ | |
2472 | continue; | |
2473 | ||
2474 | log_debug("Directory '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2475 | remove_directory(j, m); | |
2476 | } | |
2477 | ||
2478 | log_debug("Reiteration complete."); | |
2479 | } | |
2480 | ||
50f20cfd | 2481 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2482 | Directory *d; |
50f20cfd LP |
2483 | |
2484 | assert(j); | |
2485 | assert(e); | |
2486 | ||
858749f7 LP |
2487 | if (e->mask & IN_Q_OVERFLOW) { |
2488 | process_q_overflow(j); | |
2489 | return; | |
2490 | } | |
2491 | ||
50f20cfd | 2492 | /* Is this a subdirectory we watch? */ |
a963990f LP |
2493 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2494 | if (d) { | |
de2c3907 LP |
2495 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2496 | (endswith(e->name, ".journal") || | |
2497 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2498 | |
2499 | /* Event for a journal file */ | |
2500 | ||
d617408e LP |
2501 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2502 | (void) add_file(j, d->path, e->name); | |
2503 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) | |
2504 | remove_file(j, d->path, e->name); | |
50f20cfd | 2505 | |
a963990f | 2506 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2507 | |
a963990f | 2508 | /* Event for a subdirectory */ |
50f20cfd | 2509 | |
b2b46f91 TA |
2510 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2511 | remove_directory(j, d); | |
50f20cfd | 2512 | |
a9be0692 | 2513 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && id128_is_valid(e->name)) { |
50f20cfd | 2514 | |
a963990f | 2515 | /* Event for root directory */ |
50f20cfd | 2516 | |
d617408e LP |
2517 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2518 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2519 | } |
2520 | ||
2521 | return; | |
2522 | } | |
2523 | ||
2524 | if (e->mask & IN_IGNORED) | |
2525 | return; | |
2526 | ||
a9be0692 | 2527 | log_debug("Unexpected inotify event."); |
50f20cfd LP |
2528 | } |
2529 | ||
a963990f LP |
2530 | static int determine_change(sd_journal *j) { |
2531 | bool b; | |
2532 | ||
2533 | assert(j); | |
2534 | ||
2535 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2536 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2537 | ||
2538 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2539 | } | |
2540 | ||
a5344d2c | 2541 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2542 | bool got_something = false; |
50f20cfd | 2543 | |
1ae464e0 TA |
2544 | assert_return(j, -EINVAL); |
2545 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2546 | |
10c4d640 LP |
2547 | if (j->inotify_fd < 0) /* We have no inotify fd yet? Then there's noting to process. */ |
2548 | return 0; | |
2549 | ||
39c155ea | 2550 | j->last_process_usec = now(CLOCK_MONOTONIC); |
f9346444 | 2551 | j->last_invalidate_counter = j->current_invalidate_counter; |
39c155ea | 2552 | |
50f20cfd | 2553 | for (;;) { |
0254e944 | 2554 | union inotify_event_buffer buffer; |
50f20cfd LP |
2555 | struct inotify_event *e; |
2556 | ssize_t l; | |
2557 | ||
0254e944 | 2558 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2559 | if (l < 0) { |
3742095b | 2560 | if (IN_SET(errno, EAGAIN, EINTR)) |
a963990f | 2561 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; |
50f20cfd LP |
2562 | |
2563 | return -errno; | |
2564 | } | |
2565 | ||
a963990f LP |
2566 | got_something = true; |
2567 | ||
f7c1ad4f | 2568 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2569 | process_inotify_event(j, e); |
50f20cfd LP |
2570 | } |
2571 | } | |
6ad1d1c3 | 2572 | |
e02d1cf7 | 2573 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2574 | int r; |
39c155ea | 2575 | uint64_t t; |
e02d1cf7 | 2576 | |
1ae464e0 TA |
2577 | assert_return(j, -EINVAL); |
2578 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2579 | |
a963990f LP |
2580 | if (j->inotify_fd < 0) { |
2581 | ||
2582 | /* This is the first invocation, hence create the | |
2583 | * inotify watch */ | |
2584 | r = sd_journal_get_fd(j); | |
2585 | if (r < 0) | |
2586 | return r; | |
2587 | ||
2588 | /* The journal might have changed since the context | |
2589 | * object was created and we weren't watching before, | |
2590 | * hence don't wait for anything, and return | |
2591 | * immediately. */ | |
2592 | return determine_change(j); | |
2593 | } | |
2594 | ||
39c155ea LP |
2595 | r = sd_journal_get_timeout(j, &t); |
2596 | if (r < 0) | |
2597 | return r; | |
2598 | ||
2599 | if (t != (uint64_t) -1) { | |
2600 | usec_t n; | |
2601 | ||
2602 | n = now(CLOCK_MONOTONIC); | |
2603 | t = t > n ? t - n : 0; | |
85210bff | 2604 | |
39c155ea LP |
2605 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2606 | timeout_usec = t; | |
85210bff LP |
2607 | } |
2608 | ||
a963990f LP |
2609 | do { |
2610 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2611 | } while (r == -EINTR); | |
e02d1cf7 LP |
2612 | |
2613 | if (r < 0) | |
2614 | return r; | |
2615 | ||
a963990f | 2616 | return sd_journal_process(j); |
e02d1cf7 LP |
2617 | } |
2618 | ||
08984293 LP |
2619 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2620 | Iterator i; | |
2621 | JournalFile *f; | |
2622 | bool first = true; | |
581483bf | 2623 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2624 | int r; |
2625 | ||
1ae464e0 TA |
2626 | assert_return(j, -EINVAL); |
2627 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2628 | assert_return(from || to, -EINVAL); | |
2629 | assert_return(from != to, -EINVAL); | |
08984293 | 2630 | |
c1f906bd | 2631 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2632 | usec_t fr, t; |
2633 | ||
2634 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2635 | if (r == -ENOENT) |
2636 | continue; | |
08984293 LP |
2637 | if (r < 0) |
2638 | return r; | |
2639 | if (r == 0) | |
2640 | continue; | |
2641 | ||
2642 | if (first) { | |
581483bf LP |
2643 | fmin = fr; |
2644 | tmax = t; | |
08984293 LP |
2645 | first = false; |
2646 | } else { | |
581483bf LP |
2647 | fmin = MIN(fr, fmin); |
2648 | tmax = MAX(t, tmax); | |
08984293 LP |
2649 | } |
2650 | } | |
2651 | ||
581483bf LP |
2652 | if (from) |
2653 | *from = fmin; | |
2654 | if (to) | |
2655 | *to = tmax; | |
2656 | ||
08984293 LP |
2657 | return first ? 0 : 1; |
2658 | } | |
2659 | ||
2660 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2661 | Iterator i; | |
2662 | JournalFile *f; | |
1651e2c6 | 2663 | bool found = false; |
08984293 LP |
2664 | int r; |
2665 | ||
1ae464e0 TA |
2666 | assert_return(j, -EINVAL); |
2667 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2668 | assert_return(from || to, -EINVAL); | |
2669 | assert_return(from != to, -EINVAL); | |
08984293 | 2670 | |
c1f906bd | 2671 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2672 | usec_t fr, t; |
2673 | ||
2674 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2675 | if (r == -ENOENT) |
2676 | continue; | |
08984293 LP |
2677 | if (r < 0) |
2678 | return r; | |
2679 | if (r == 0) | |
2680 | continue; | |
2681 | ||
1651e2c6 | 2682 | if (found) { |
08984293 | 2683 | if (from) |
1651e2c6 | 2684 | *from = MIN(fr, *from); |
08984293 | 2685 | if (to) |
1651e2c6 | 2686 | *to = MAX(t, *to); |
08984293 LP |
2687 | } else { |
2688 | if (from) | |
1651e2c6 | 2689 | *from = fr; |
08984293 | 2690 | if (to) |
1651e2c6 ZJS |
2691 | *to = t; |
2692 | found = true; | |
08984293 LP |
2693 | } |
2694 | } | |
2695 | ||
1651e2c6 | 2696 | return found; |
08984293 LP |
2697 | } |
2698 | ||
dca6219e LP |
2699 | void journal_print_header(sd_journal *j) { |
2700 | Iterator i; | |
2701 | JournalFile *f; | |
2702 | bool newline = false; | |
2703 | ||
2704 | assert(j); | |
2705 | ||
c1f906bd | 2706 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2707 | if (newline) |
2708 | putchar('\n'); | |
2709 | else | |
2710 | newline = true; | |
2711 | ||
2712 | journal_file_print_header(f); | |
2713 | } | |
2714 | } | |
08984293 | 2715 | |
a1a03e30 LP |
2716 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2717 | Iterator i; | |
2718 | JournalFile *f; | |
2719 | uint64_t sum = 0; | |
2720 | ||
1ae464e0 TA |
2721 | assert_return(j, -EINVAL); |
2722 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2723 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2724 | |
c1f906bd | 2725 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2726 | struct stat st; |
2727 | ||
2728 | if (fstat(f->fd, &st) < 0) | |
2729 | return -errno; | |
2730 | ||
2731 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2732 | } | |
2733 | ||
2734 | *bytes = sum; | |
2735 | return 0; | |
2736 | } | |
2737 | ||
3c1668da LP |
2738 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2739 | char *f; | |
2740 | ||
1ae464e0 TA |
2741 | assert_return(j, -EINVAL); |
2742 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2743 | assert_return(!isempty(field), -EINVAL); | |
2744 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2745 | |
2746 | f = strdup(field); | |
2747 | if (!f) | |
2748 | return -ENOMEM; | |
2749 | ||
2750 | free(j->unique_field); | |
2751 | j->unique_field = f; | |
2752 | j->unique_file = NULL; | |
2753 | j->unique_offset = 0; | |
360af4cf | 2754 | j->unique_file_lost = false; |
3c1668da LP |
2755 | |
2756 | return 0; | |
2757 | } | |
2758 | ||
2759 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2760 | size_t k; |
19a2bd80 | 2761 | |
1ae464e0 TA |
2762 | assert_return(j, -EINVAL); |
2763 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2764 | assert_return(data, -EINVAL); | |
2765 | assert_return(l, -EINVAL); | |
2766 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2767 | |
3c1668da | 2768 | k = strlen(j->unique_field); |
19a2bd80 | 2769 | |
3c1668da | 2770 | if (!j->unique_file) { |
360af4cf ZJS |
2771 | if (j->unique_file_lost) |
2772 | return 0; | |
2773 | ||
c1f906bd | 2774 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2775 | if (!j->unique_file) |
2776 | return 0; | |
360af4cf | 2777 | |
3c1668da LP |
2778 | j->unique_offset = 0; |
2779 | } | |
19a2bd80 | 2780 | |
3c1668da LP |
2781 | for (;;) { |
2782 | JournalFile *of; | |
2783 | Iterator i; | |
ae97089d | 2784 | Object *o; |
3c1668da LP |
2785 | const void *odata; |
2786 | size_t ol; | |
2787 | bool found; | |
ae97089d | 2788 | int r; |
3c1668da | 2789 | |
bdc02927 | 2790 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2791 | if (j->unique_offset == 0) { |
2792 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2793 | if (r < 0) | |
2794 | return r; | |
2795 | ||
2796 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2797 | } else { | |
2798 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2799 | if (r < 0) | |
2800 | return r; | |
2801 | ||
2802 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2803 | } | |
2804 | ||
2805 | /* We reached the end of the list? Then start again, with the next file */ | |
2806 | if (j->unique_offset == 0) { | |
c1f906bd | 2807 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2808 | if (!j->unique_file) |
3c1668da LP |
2809 | return 0; |
2810 | ||
3c1668da LP |
2811 | continue; |
2812 | } | |
2813 | ||
d05089d8 MS |
2814 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2815 | * instead, so that we can look at this data object at the same | |
3c1668da | 2816 | * time as one on another file */ |
d05089d8 | 2817 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2818 | if (r < 0) |
2819 | return r; | |
2820 | ||
2821 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2822 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2823 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2824 | j->unique_file->path, j->unique_offset, |
2825 | o->object.type, OBJECT_DATA); | |
3c1668da | 2826 | return -EBADMSG; |
ae97089d ZJS |
2827 | } |
2828 | ||
93b73b06 | 2829 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2830 | if (r < 0) |
2831 | return r; | |
2832 | ||
0f99f74a ZJS |
2833 | /* Check if we have at least the field name and "=". */ |
2834 | if (ol <= k) { | |
2835 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2836 | j->unique_file->path, j->unique_offset, | |
2837 | ol, k + 1); | |
2838 | return -EBADMSG; | |
2839 | } | |
2840 | ||
2841 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2842 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2843 | j->unique_file->path, j->unique_offset, | |
2844 | j->unique_field); | |
2845 | return -EBADMSG; | |
2846 | } | |
2847 | ||
3c1668da LP |
2848 | /* OK, now let's see if we already returned this data |
2849 | * object by checking if it exists in the earlier | |
2850 | * traversed files. */ | |
2851 | found = false; | |
c1f906bd | 2852 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2853 | if (of == j->unique_file) |
2854 | break; | |
2855 | ||
ed71f956 LP |
2856 | /* Skip this file it didn't have any fields indexed */ |
2857 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2858 | continue; |
2859 | ||
ed71f956 | 2860 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); |
3c1668da LP |
2861 | if (r < 0) |
2862 | return r; | |
ed71f956 | 2863 | if (r > 0) { |
3c1668da | 2864 | found = true; |
ed71f956 LP |
2865 | break; |
2866 | } | |
3c1668da LP |
2867 | } |
2868 | ||
06cc69d4 JJ |
2869 | if (found) |
2870 | continue; | |
2871 | ||
93b73b06 | 2872 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2873 | if (r < 0) |
2874 | return r; | |
2875 | ||
2876 | return 1; | |
2877 | } | |
2878 | } | |
2879 | ||
115646c7 | 2880 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2881 | if (!j) |
2882 | return; | |
2883 | ||
2884 | j->unique_file = NULL; | |
2885 | j->unique_offset = 0; | |
360af4cf | 2886 | j->unique_file_lost = false; |
3c1668da | 2887 | } |
85210bff | 2888 | |
eb86030e LP |
2889 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
2890 | int r; | |
2891 | ||
2892 | assert_return(j, -EINVAL); | |
2893 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2894 | assert_return(field, -EINVAL); | |
2895 | ||
2896 | if (!j->fields_file) { | |
2897 | if (j->fields_file_lost) | |
2898 | return 0; | |
2899 | ||
2900 | j->fields_file = ordered_hashmap_first(j->files); | |
2901 | if (!j->fields_file) | |
2902 | return 0; | |
2903 | ||
2904 | j->fields_hash_table_index = 0; | |
2905 | j->fields_offset = 0; | |
2906 | } | |
2907 | ||
2908 | for (;;) { | |
2909 | JournalFile *f, *of; | |
2910 | Iterator i; | |
2911 | uint64_t m; | |
2912 | Object *o; | |
2913 | size_t sz; | |
2914 | bool found; | |
2915 | ||
2916 | f = j->fields_file; | |
2917 | ||
2918 | if (j->fields_offset == 0) { | |
2919 | bool eof = false; | |
2920 | ||
2921 | /* We are not yet positioned at any field. Let's pick the first one */ | |
2922 | r = journal_file_map_field_hash_table(f); | |
2923 | if (r < 0) | |
2924 | return r; | |
2925 | ||
2926 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
2927 | for (;;) { | |
2928 | if (j->fields_hash_table_index >= m) { | |
2929 | /* Reached the end of the hash table, go to the next file. */ | |
2930 | eof = true; | |
2931 | break; | |
2932 | } | |
2933 | ||
2934 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
2935 | ||
2936 | if (j->fields_offset != 0) | |
2937 | break; | |
2938 | ||
2939 | /* Empty hash table bucket, go to next one */ | |
2940 | j->fields_hash_table_index++; | |
2941 | } | |
2942 | ||
2943 | if (eof) { | |
2944 | /* Proceed with next file */ | |
2945 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
2946 | if (!j->fields_file) { | |
2947 | *field = NULL; | |
2948 | return 0; | |
2949 | } | |
2950 | ||
2951 | j->fields_offset = 0; | |
2952 | j->fields_hash_table_index = 0; | |
2953 | continue; | |
2954 | } | |
2955 | ||
2956 | } else { | |
2957 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
2958 | ||
2959 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
2960 | if (r < 0) | |
2961 | return r; | |
2962 | ||
2963 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
2964 | if (j->fields_offset == 0) { | |
2965 | /* Reached the end of the hash table chain */ | |
2966 | j->fields_hash_table_index++; | |
2967 | continue; | |
2968 | } | |
2969 | } | |
2970 | ||
1f133e0d | 2971 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
2972 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
2973 | if (r < 0) | |
2974 | return r; | |
2975 | ||
2976 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
2977 | if (o->object.type != OBJECT_FIELD) { | |
2978 | log_debug("%s:offset " OFSfmt ": object has type %i, expected %i", f->path, j->fields_offset, o->object.type, OBJECT_FIELD); | |
2979 | return -EBADMSG; | |
2980 | } | |
2981 | ||
2982 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
2983 | ||
2984 | /* Let's see if we already returned this field name before. */ | |
2985 | found = false; | |
2986 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { | |
2987 | if (of == f) | |
2988 | break; | |
2989 | ||
2990 | /* Skip this file it didn't have any fields indexed */ | |
2991 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
2992 | continue; | |
2993 | ||
2994 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, le64toh(o->field.hash), NULL, NULL); | |
2995 | if (r < 0) | |
2996 | return r; | |
2997 | if (r > 0) { | |
2998 | found = true; | |
2999 | break; | |
3000 | } | |
3001 | } | |
3002 | ||
3003 | if (found) | |
3004 | continue; | |
3005 | ||
3006 | /* Check if this is really a valid string containing no NUL byte */ | |
3007 | if (memchr(o->field.payload, 0, sz)) | |
3008 | return -EBADMSG; | |
3009 | ||
3010 | if (sz > j->data_threshold) | |
3011 | sz = j->data_threshold; | |
3012 | ||
3013 | if (!GREEDY_REALLOC(j->fields_buffer, j->fields_buffer_allocated, sz + 1)) | |
3014 | return -ENOMEM; | |
3015 | ||
3016 | memcpy(j->fields_buffer, o->field.payload, sz); | |
3017 | j->fields_buffer[sz] = 0; | |
3018 | ||
3019 | if (!field_is_valid(j->fields_buffer)) | |
3020 | return -EBADMSG; | |
3021 | ||
3022 | *field = j->fields_buffer; | |
3023 | return 1; | |
3024 | } | |
3025 | } | |
3026 | ||
3027 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
3028 | if (!j) | |
3029 | return; | |
3030 | ||
3031 | j->fields_file = NULL; | |
3032 | j->fields_hash_table_index = 0; | |
3033 | j->fields_offset = 0; | |
3034 | j->fields_file_lost = false; | |
3035 | } | |
3036 | ||
85210bff | 3037 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
3038 | assert_return(j, -EINVAL); |
3039 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
3040 | |
3041 | return !j->on_network; | |
3042 | } | |
d4205751 LP |
3043 | |
3044 | static char *lookup_field(const char *field, void *userdata) { | |
3045 | sd_journal *j = userdata; | |
3046 | const void *data; | |
3047 | size_t size, d; | |
3048 | int r; | |
3049 | ||
3050 | assert(field); | |
3051 | assert(j); | |
3052 | ||
3053 | r = sd_journal_get_data(j, field, &data, &size); | |
3054 | if (r < 0 || | |
3055 | size > REPLACE_VAR_MAX) | |
3056 | return strdup(field); | |
3057 | ||
3058 | d = strlen(field) + 1; | |
3059 | ||
3060 | return strndup((const char*) data + d, size - d); | |
3061 | } | |
3062 | ||
3063 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
3064 | const void *data; | |
3065 | size_t size; | |
3066 | sd_id128_t id; | |
3067 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
3068 | char *t; | |
3069 | int r; | |
3070 | ||
1ae464e0 TA |
3071 | assert_return(j, -EINVAL); |
3072 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3073 | assert_return(ret, -EINVAL); | |
d4205751 LP |
3074 | |
3075 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
3076 | if (r < 0) | |
3077 | return r; | |
3078 | ||
3079 | cid = strndup((const char*) data + 11, size - 11); | |
3080 | if (!cid) | |
3081 | return -ENOMEM; | |
3082 | ||
3083 | r = sd_id128_from_string(cid, &id); | |
3084 | if (r < 0) | |
3085 | return r; | |
3086 | ||
844ec79b | 3087 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
3088 | if (r < 0) |
3089 | return r; | |
3090 | ||
3091 | t = replace_var(text, lookup_field, j); | |
3092 | if (!t) | |
3093 | return -ENOMEM; | |
3094 | ||
3095 | *ret = t; | |
3096 | return 0; | |
3097 | } | |
8f1e860f LP |
3098 | |
3099 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 3100 | assert_return(ret, -EINVAL); |
8f1e860f | 3101 | |
844ec79b | 3102 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 3103 | } |
93b73b06 LP |
3104 | |
3105 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
3106 | assert_return(j, -EINVAL); |
3107 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
3108 | |
3109 | j->data_threshold = sz; | |
3110 | return 0; | |
3111 | } | |
3112 | ||
3113 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
3114 | assert_return(j, -EINVAL); |
3115 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3116 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
3117 | |
3118 | *sz = j->data_threshold; | |
3119 | return 0; | |
3120 | } | |
39fd5b08 JS |
3121 | |
3122 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
3123 | assert_return(j, -EINVAL); | |
3124 | ||
3125 | return j->has_runtime_files; | |
3126 | } | |
3127 | ||
3128 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
3129 | assert_return(j, -EINVAL); | |
3130 | ||
3131 | return j->has_persistent_files; | |
3132 | } |