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87d2c1ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
87d2c1ff LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
87d2c1ff | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
87d2c1ff | 22 | #include <errno.h> |
87d2c1ff | 23 | #include <fcntl.h> |
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 | |
07630cea LP |
33 | #include "catalog.h" |
34 | #include "compress.h" | |
a0956174 | 35 | #include "dirent-util.h" |
3ffd4af2 | 36 | #include "fd-util.h" |
07630cea LP |
37 | #include "fileio.h" |
38 | #include "formats-util.h" | |
39 | #include "hashmap.h" | |
40 | #include "hostname-util.h" | |
c004493c | 41 | #include "io-util.h" |
87d2c1ff | 42 | #include "journal-def.h" |
cec736d2 | 43 | #include "journal-file.h" |
07630cea | 44 | #include "journal-internal.h" |
cec736d2 | 45 | #include "list.h" |
de7b95cd | 46 | #include "lookup3.h" |
85210bff | 47 | #include "missing.h" |
07630cea | 48 | #include "path-util.h" |
d4205751 | 49 | #include "replace-var.h" |
07630cea LP |
50 | #include "string-util.h" |
51 | #include "strv.h" | |
87d2c1ff | 52 | |
9e8abdf0 LP |
53 | #define JOURNAL_FILES_MAX 7168 |
54 | ||
85210bff LP |
55 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
56 | ||
d4205751 LP |
57 | #define REPLACE_VAR_MAX 256 |
58 | ||
93b73b06 LP |
59 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
60 | ||
a9a245c1 ZJS |
61 | static void remove_file_real(sd_journal *j, JournalFile *f); |
62 | ||
a65f06bb ZJS |
63 | static bool journal_pid_changed(sd_journal *j) { |
64 | assert(j); | |
65 | ||
66 | /* We don't support people creating a journal object and | |
67 | * keeping it around over a fork(). Let's complain. */ | |
68 | ||
69 | return j->original_pid != getpid(); | |
70 | } | |
71 | ||
6fe391c5 ZJS |
72 | /* We return an error here only if we didn't manage to |
73 | memorize the real error. */ | |
3ac251b8 LP |
74 | static int set_put_error(sd_journal *j, int r) { |
75 | int k; | |
76 | ||
6fe391c5 ZJS |
77 | if (r >= 0) |
78 | return r; | |
79 | ||
d5099efc | 80 | k = set_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
81 | if (k < 0) |
82 | return k; | |
83 | ||
84 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
85 | } |
86 | ||
de190aef | 87 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
88 | Iterator i; |
89 | JournalFile *f; | |
90 | ||
91 | assert(j); | |
92 | ||
93 | j->current_file = NULL; | |
94 | j->current_field = 0; | |
95 | ||
c1f906bd | 96 | ORDERED_HASHMAP_FOREACH(f, j->files, i) |
1fc605b0 | 97 | journal_file_reset_location(f); |
8f9b6cd9 LP |
98 | } |
99 | ||
de190aef LP |
100 | static void reset_location(sd_journal *j) { |
101 | assert(j); | |
102 | ||
103 | detach_location(j); | |
104 | zero(j->current_location); | |
105 | } | |
106 | ||
a87247dd | 107 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 108 | assert(l); |
a87247dd | 109 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
110 | assert(f); |
111 | assert(o->object.type == OBJECT_ENTRY); | |
112 | ||
a87247dd | 113 | l->type = type; |
de190aef LP |
114 | l->seqnum = le64toh(o->entry.seqnum); |
115 | l->seqnum_id = f->header->seqnum_id; | |
116 | l->realtime = le64toh(o->entry.realtime); | |
117 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 118 | l->boot_id = o->entry.boot_id; |
de190aef LP |
119 | l->xor_hash = le64toh(o->entry.xor_hash); |
120 | ||
121 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
122 | } | |
123 | ||
1eb6332d | 124 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
125 | assert(j); |
126 | assert(f); | |
127 | assert(o); | |
128 | ||
1eb6332d | 129 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
130 | |
131 | j->current_file = f; | |
132 | j->current_field = 0; | |
133 | ||
6573ef05 MS |
134 | /* Let f know its candidate entry was picked. */ |
135 | assert(f->location_type == LOCATION_SEEK); | |
136 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
137 | } |
138 | ||
cbdca852 LP |
139 | static int match_is_valid(const void *data, size_t size) { |
140 | const char *b, *p; | |
141 | ||
142 | assert(data); | |
143 | ||
144 | if (size < 2) | |
145 | return false; | |
146 | ||
147 | if (startswith(data, "__")) | |
148 | return false; | |
149 | ||
150 | b = data; | |
151 | for (p = b; p < b + size; p++) { | |
152 | ||
153 | if (*p == '=') | |
154 | return p > b; | |
155 | ||
156 | if (*p == '_') | |
157 | continue; | |
158 | ||
159 | if (*p >= 'A' && *p <= 'Z') | |
160 | continue; | |
161 | ||
162 | if (*p >= '0' && *p <= '9') | |
163 | continue; | |
164 | ||
165 | return false; | |
166 | } | |
167 | ||
168 | return false; | |
169 | } | |
170 | ||
171 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
172 | const uint8_t *a = _a, *b = _b; |
173 | size_t j; | |
de190aef LP |
174 | |
175 | for (j = 0; j < s && j < t; j++) { | |
176 | ||
de190aef | 177 | if (a[j] != b[j]) |
cbdca852 | 178 | return false; |
de190aef | 179 | |
cbdca852 LP |
180 | if (a[j] == '=') |
181 | return true; | |
de190aef LP |
182 | } |
183 | ||
bc302926 | 184 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
185 | } |
186 | ||
187 | static Match *match_new(Match *p, MatchType t) { | |
188 | Match *m; | |
189 | ||
190 | m = new0(Match, 1); | |
191 | if (!m) | |
192 | return NULL; | |
193 | ||
194 | m->type = t; | |
195 | ||
196 | if (p) { | |
197 | m->parent = p; | |
71fda00f | 198 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
199 | } |
200 | ||
201 | return m; | |
202 | } | |
203 | ||
204 | static void match_free(Match *m) { | |
205 | assert(m); | |
206 | ||
207 | while (m->matches) | |
208 | match_free(m->matches); | |
209 | ||
210 | if (m->parent) | |
71fda00f | 211 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
212 | |
213 | free(m->data); | |
214 | free(m); | |
215 | } | |
216 | ||
217 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 218 | if (!m || m->matches) |
cbdca852 LP |
219 | return; |
220 | ||
221 | match_free(m); | |
de190aef LP |
222 | } |
223 | ||
a5344d2c | 224 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 225 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 226 | le64_t le_hash; |
87d2c1ff | 227 | |
1ae464e0 TA |
228 | assert_return(j, -EINVAL); |
229 | assert_return(!journal_pid_changed(j), -ECHILD); | |
230 | assert_return(data, -EINVAL); | |
cbdca852 LP |
231 | |
232 | if (size == 0) | |
233 | size = strlen(data); | |
234 | ||
1ae464e0 | 235 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 236 | |
cd34b3c6 HH |
237 | /* level 0: AND term |
238 | * level 1: OR terms | |
239 | * level 2: AND terms | |
240 | * level 3: OR terms | |
241 | * level 4: concrete matches */ | |
cbdca852 LP |
242 | |
243 | if (!j->level0) { | |
cd34b3c6 | 244 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
245 | if (!j->level0) |
246 | return -ENOMEM; | |
247 | } | |
248 | ||
249 | if (!j->level1) { | |
cd34b3c6 | 250 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
251 | if (!j->level1) |
252 | return -ENOMEM; | |
253 | } | |
254 | ||
cd34b3c6 HH |
255 | if (!j->level2) { |
256 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
257 | if (!j->level2) | |
258 | return -ENOMEM; | |
259 | } | |
260 | ||
261 | assert(j->level0->type == MATCH_AND_TERM); | |
262 | assert(j->level1->type == MATCH_OR_TERM); | |
263 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 264 | |
de190aef LP |
265 | le_hash = htole64(hash64(data, size)); |
266 | ||
cd34b3c6 HH |
267 | LIST_FOREACH(matches, l3, j->level2->matches) { |
268 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 269 | |
cd34b3c6 HH |
270 | LIST_FOREACH(matches, l4, l3->matches) { |
271 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 272 | |
cbdca852 LP |
273 | /* Exactly the same match already? Then ignore |
274 | * this addition */ | |
cd34b3c6 HH |
275 | if (l4->le_hash == le_hash && |
276 | l4->size == size && | |
277 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
278 | return 0; |
279 | ||
280 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
281 | if (same_field(data, size, l4->data, l4->size)) { |
282 | add_here = l3; | |
cbdca852 LP |
283 | break; |
284 | } | |
285 | } | |
286 | ||
287 | if (add_here) | |
288 | break; | |
de190aef LP |
289 | } |
290 | ||
cbdca852 | 291 | if (!add_here) { |
cd34b3c6 | 292 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
293 | if (!add_here) |
294 | goto fail; | |
295 | } | |
296 | ||
297 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 298 | if (!m) |
cbdca852 | 299 | goto fail; |
87d2c1ff | 300 | |
cbdca852 | 301 | m->le_hash = le_hash; |
1cc101f1 | 302 | m->size = size; |
cbdca852 LP |
303 | m->data = memdup(data, size); |
304 | if (!m->data) | |
305 | goto fail; | |
306 | ||
307 | detach_location(j); | |
308 | ||
309 | return 0; | |
310 | ||
311 | fail: | |
c5a10d9c ZJS |
312 | match_free_if_empty(add_here); |
313 | match_free_if_empty(j->level2); | |
314 | match_free_if_empty(j->level1); | |
315 | match_free_if_empty(j->level0); | |
cbdca852 LP |
316 | |
317 | return -ENOMEM; | |
318 | } | |
319 | ||
cd34b3c6 | 320 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
321 | assert_return(j, -EINVAL); |
322 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 323 | |
cbdca852 LP |
324 | if (!j->level0) |
325 | return 0; | |
326 | ||
327 | if (!j->level1) | |
328 | return 0; | |
329 | ||
330 | if (!j->level1->matches) | |
331 | return 0; | |
332 | ||
cd34b3c6 HH |
333 | j->level1 = NULL; |
334 | j->level2 = NULL; | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
340 | assert_return(j, -EINVAL); |
341 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
342 | |
343 | if (!j->level0) | |
344 | return 0; | |
345 | ||
346 | if (!j->level1) | |
347 | return 0; | |
348 | ||
349 | if (!j->level2) | |
350 | return 0; | |
351 | ||
352 | if (!j->level2->matches) | |
353 | return 0; | |
cbdca852 | 354 | |
cd34b3c6 | 355 | j->level2 = NULL; |
cbdca852 LP |
356 | return 0; |
357 | } | |
358 | ||
359 | static char *match_make_string(Match *m) { | |
360 | char *p, *r; | |
361 | Match *i; | |
362 | bool enclose = false; | |
363 | ||
364 | if (!m) | |
4ad16808 | 365 | return strdup("none"); |
cbdca852 LP |
366 | |
367 | if (m->type == MATCH_DISCRETE) | |
368 | return strndup(m->data, m->size); | |
369 | ||
370 | p = NULL; | |
371 | LIST_FOREACH(matches, i, m->matches) { | |
372 | char *t, *k; | |
373 | ||
374 | t = match_make_string(i); | |
375 | if (!t) { | |
376 | free(p); | |
377 | return NULL; | |
378 | } | |
379 | ||
380 | if (p) { | |
b7def684 | 381 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
382 | free(p); |
383 | free(t); | |
384 | ||
385 | if (!k) | |
386 | return NULL; | |
387 | ||
388 | p = k; | |
389 | ||
390 | enclose = true; | |
bc302926 | 391 | } else |
cbdca852 | 392 | p = t; |
87d2c1ff LP |
393 | } |
394 | ||
cbdca852 | 395 | if (enclose) { |
b7def684 | 396 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
397 | free(p); |
398 | return r; | |
399 | } | |
87d2c1ff | 400 | |
cbdca852 LP |
401 | return p; |
402 | } | |
de7b95cd | 403 | |
cbdca852 LP |
404 | char *journal_make_match_string(sd_journal *j) { |
405 | assert(j); | |
8f9b6cd9 | 406 | |
cbdca852 | 407 | return match_make_string(j->level0); |
87d2c1ff LP |
408 | } |
409 | ||
a5344d2c LP |
410 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
411 | if (!j) | |
412 | return; | |
87d2c1ff | 413 | |
cbdca852 LP |
414 | if (j->level0) |
415 | match_free(j->level0); | |
de7b95cd | 416 | |
cd34b3c6 | 417 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 418 | |
de190aef | 419 | detach_location(j); |
87d2c1ff LP |
420 | } |
421 | ||
487d3720 MS |
422 | _pure_ static int compare_with_location(JournalFile *f, Location *l) { |
423 | assert(f); | |
de190aef | 424 | assert(l); |
487d3720 | 425 | assert(f->location_type == LOCATION_SEEK); |
a87247dd | 426 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
427 | |
428 | if (l->monotonic_set && | |
487d3720 | 429 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 430 | l->realtime_set && |
487d3720 | 431 | f->current_realtime == l->realtime && |
de190aef | 432 | l->xor_hash_set && |
487d3720 | 433 | f->current_xor_hash == l->xor_hash) |
de190aef LP |
434 | return 0; |
435 | ||
436 | if (l->seqnum_set && | |
487d3720 | 437 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 438 | |
487d3720 | 439 | if (f->current_seqnum < l->seqnum) |
de190aef | 440 | return -1; |
487d3720 | 441 | if (f->current_seqnum > l->seqnum) |
de190aef LP |
442 | return 1; |
443 | } | |
444 | ||
445 | if (l->monotonic_set && | |
487d3720 | 446 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 447 | |
487d3720 | 448 | if (f->current_monotonic < l->monotonic) |
de190aef | 449 | return -1; |
487d3720 | 450 | if (f->current_monotonic > l->monotonic) |
de190aef LP |
451 | return 1; |
452 | } | |
453 | ||
454 | if (l->realtime_set) { | |
455 | ||
487d3720 | 456 | if (f->current_realtime < l->realtime) |
de190aef | 457 | return -1; |
487d3720 | 458 | if (f->current_realtime > l->realtime) |
de190aef LP |
459 | return 1; |
460 | } | |
461 | ||
462 | if (l->xor_hash_set) { | |
de190aef | 463 | |
487d3720 | 464 | if (f->current_xor_hash < l->xor_hash) |
de190aef | 465 | return -1; |
487d3720 | 466 | if (f->current_xor_hash > l->xor_hash) |
de190aef LP |
467 | return 1; |
468 | } | |
469 | ||
470 | return 0; | |
471 | } | |
472 | ||
cbdca852 LP |
473 | static int next_for_match( |
474 | sd_journal *j, | |
475 | Match *m, | |
476 | JournalFile *f, | |
477 | uint64_t after_offset, | |
478 | direction_t direction, | |
479 | Object **ret, | |
480 | uint64_t *offset) { | |
481 | ||
de7b95cd | 482 | int r; |
cbdca852 LP |
483 | uint64_t np = 0; |
484 | Object *n; | |
de7b95cd LP |
485 | |
486 | assert(j); | |
cbdca852 LP |
487 | assert(m); |
488 | assert(f); | |
de7b95cd | 489 | |
cbdca852 LP |
490 | if (m->type == MATCH_DISCRETE) { |
491 | uint64_t dp; | |
de190aef | 492 | |
cbdca852 | 493 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
494 | if (r <= 0) |
495 | return r; | |
496 | ||
cbdca852 | 497 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 498 | |
cbdca852 LP |
499 | } else if (m->type == MATCH_OR_TERM) { |
500 | Match *i; | |
de7b95cd | 501 | |
cbdca852 | 502 | /* Find the earliest match beyond after_offset */ |
de190aef | 503 | |
cbdca852 LP |
504 | LIST_FOREACH(matches, i, m->matches) { |
505 | uint64_t cp; | |
de190aef | 506 | |
cbdca852 | 507 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
508 | if (r < 0) |
509 | return r; | |
cbdca852 | 510 | else if (r > 0) { |
bc302926 | 511 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
512 | np = cp; |
513 | } | |
514 | } | |
b4e5f920 | 515 | |
bc302926 ZJS |
516 | if (np == 0) |
517 | return 0; | |
518 | ||
cbdca852 | 519 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 520 | Match *i, *last_moved; |
de190aef | 521 | |
cbdca852 | 522 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 523 | * this until we find an offset that matches for all |
cbdca852 | 524 | * matches. */ |
de190aef | 525 | |
cbdca852 LP |
526 | if (!m->matches) |
527 | return 0; | |
de7b95cd | 528 | |
2bc8ca0c ZJS |
529 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
530 | if (r <= 0) | |
531 | return r; | |
de190aef | 532 | |
2bc8ca0c ZJS |
533 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
534 | last_moved = m->matches; | |
de190aef | 535 | |
2bc8ca0c ZJS |
536 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
537 | uint64_t cp; | |
de190aef | 538 | |
2bc8ca0c ZJS |
539 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
540 | if (r <= 0) | |
541 | return r; | |
de190aef | 542 | |
2bc8ca0c ZJS |
543 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
544 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
545 | np = cp; | |
546 | last_moved = i; | |
de190aef | 547 | } |
2bc8ca0c | 548 | } |
cbdca852 | 549 | } |
de190aef | 550 | |
bc302926 | 551 | assert(np > 0); |
de190aef | 552 | |
cbdca852 LP |
553 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
554 | if (r < 0) | |
555 | return r; | |
de7b95cd | 556 | |
de190aef | 557 | if (ret) |
cbdca852 | 558 | *ret = n; |
de190aef | 559 | if (offset) |
cbdca852 | 560 | *offset = np; |
de190aef LP |
561 | |
562 | return 1; | |
563 | } | |
564 | ||
cbdca852 LP |
565 | static int find_location_for_match( |
566 | sd_journal *j, | |
567 | Match *m, | |
568 | JournalFile *f, | |
569 | direction_t direction, | |
570 | Object **ret, | |
571 | uint64_t *offset) { | |
572 | ||
de190aef | 573 | int r; |
de190aef LP |
574 | |
575 | assert(j); | |
cbdca852 | 576 | assert(m); |
de190aef | 577 | assert(f); |
de190aef | 578 | |
cbdca852 LP |
579 | if (m->type == MATCH_DISCRETE) { |
580 | uint64_t dp; | |
de190aef | 581 | |
cbdca852 | 582 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
583 | if (r <= 0) |
584 | return r; | |
585 | ||
cbdca852 | 586 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 587 | |
cbdca852 LP |
588 | if (j->current_location.type == LOCATION_HEAD) |
589 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
590 | if (j->current_location.type == LOCATION_TAIL) | |
591 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
592 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
593 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
594 | if (j->current_location.monotonic_set) { | |
595 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
596 | if (r != -ENOENT) | |
597 | return r; | |
598 | } | |
599 | if (j->current_location.realtime_set) | |
600 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 601 | |
cbdca852 | 602 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 603 | |
cbdca852 LP |
604 | } else if (m->type == MATCH_OR_TERM) { |
605 | uint64_t np = 0; | |
606 | Object *n; | |
607 | Match *i; | |
de7b95cd | 608 | |
cbdca852 | 609 | /* Find the earliest match */ |
de7b95cd | 610 | |
cbdca852 LP |
611 | LIST_FOREACH(matches, i, m->matches) { |
612 | uint64_t cp; | |
613 | ||
614 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
615 | if (r < 0) | |
616 | return r; | |
617 | else if (r > 0) { | |
618 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
619 | np = cp; | |
de190aef | 620 | } |
cbdca852 | 621 | } |
de190aef | 622 | |
cbdca852 LP |
623 | if (np == 0) |
624 | return 0; | |
de7b95cd | 625 | |
cbdca852 LP |
626 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
627 | if (r < 0) | |
628 | return r; | |
de7b95cd | 629 | |
cbdca852 LP |
630 | if (ret) |
631 | *ret = n; | |
632 | if (offset) | |
633 | *offset = np; | |
de190aef | 634 | |
cbdca852 | 635 | return 1; |
e892bd17 | 636 | |
cbdca852 LP |
637 | } else { |
638 | Match *i; | |
639 | uint64_t np = 0; | |
640 | ||
641 | assert(m->type == MATCH_AND_TERM); | |
642 | ||
643 | /* First jump to the last match, and then find the | |
644 | * next one where all matches match */ | |
645 | ||
646 | if (!m->matches) | |
647 | return 0; | |
648 | ||
649 | LIST_FOREACH(matches, i, m->matches) { | |
650 | uint64_t cp; | |
651 | ||
652 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
653 | if (r <= 0) | |
4b067dc9 LP |
654 | return r; |
655 | ||
bc302926 | 656 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 657 | np = cp; |
de7b95cd LP |
658 | } |
659 | ||
cbdca852 LP |
660 | return next_for_match(j, m, f, np, direction, ret, offset); |
661 | } | |
662 | } | |
de190aef | 663 | |
cbdca852 LP |
664 | static int find_location_with_matches( |
665 | sd_journal *j, | |
666 | JournalFile *f, | |
667 | direction_t direction, | |
668 | Object **ret, | |
669 | uint64_t *offset) { | |
670 | ||
671 | int r; | |
672 | ||
673 | assert(j); | |
674 | assert(f); | |
675 | assert(ret); | |
676 | assert(offset); | |
677 | ||
678 | if (!j->level0) { | |
679 | /* No matches is simple */ | |
680 | ||
681 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 682 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 683 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 684 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
685 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
686 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
687 | if (j->current_location.monotonic_set) { | |
688 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
689 | if (r != -ENOENT) | |
690 | return r; | |
de7b95cd | 691 | } |
cbdca852 LP |
692 | if (j->current_location.realtime_set) |
693 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 694 | |
f534928a | 695 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
696 | } else |
697 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
698 | } | |
de7b95cd | 699 | |
cbdca852 LP |
700 | static int next_with_matches( |
701 | sd_journal *j, | |
702 | JournalFile *f, | |
703 | direction_t direction, | |
704 | Object **ret, | |
705 | uint64_t *offset) { | |
706 | ||
cbdca852 LP |
707 | assert(j); |
708 | assert(f); | |
709 | assert(ret); | |
710 | assert(offset); | |
711 | ||
cbdca852 LP |
712 | /* No matches is easy. We simple advance the file |
713 | * pointer by one. */ | |
714 | if (!j->level0) | |
b29ddfcb | 715 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
716 | |
717 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 718 | * with an offset at least one step larger */ |
b29ddfcb MS |
719 | return next_for_match(j, j->level0, f, |
720 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
721 | : f->current_offset - 1, | |
722 | direction, ret, offset); | |
de7b95cd LP |
723 | } |
724 | ||
58439db4 | 725 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 726 | Object *c; |
6e693b42 | 727 | uint64_t cp, n_entries; |
cbdca852 | 728 | int r; |
de190aef LP |
729 | |
730 | assert(j); | |
731 | assert(f); | |
732 | ||
950c07d4 MS |
733 | n_entries = le64toh(f->header->n_entries); |
734 | ||
735 | /* If we hit EOF before, we don't need to look into this file again | |
736 | * unless direction changed or new entries appeared. */ | |
737 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
738 | n_entries == f->last_n_entries) | |
739 | return 0; | |
668c965a | 740 | |
950c07d4 MS |
741 | f->last_n_entries = n_entries; |
742 | ||
743 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
744 | /* LOCATION_SEEK here means we did the work in a previous |
745 | * iteration and the current location already points to a | |
746 | * candidate entry. */ | |
487d3720 MS |
747 | if (f->location_type != LOCATION_SEEK) { |
748 | r = next_with_matches(j, f, direction, &c, &cp); | |
749 | if (r <= 0) | |
750 | return r; | |
466ccd92 | 751 | |
950c07d4 | 752 | journal_file_save_location(f, c, cp); |
487d3720 | 753 | } |
de190aef | 754 | } else { |
950c07d4 MS |
755 | f->last_direction = direction; |
756 | ||
cbdca852 | 757 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
758 | if (r <= 0) |
759 | return r; | |
487d3720 | 760 | |
950c07d4 | 761 | journal_file_save_location(f, c, cp); |
de190aef LP |
762 | } |
763 | ||
bc302926 | 764 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
765 | * that is actually different from what we were previously |
766 | * looking at. This is necessary to handle entries which exist | |
767 | * in two (or more) journal files, and which shall all be | |
768 | * suppressed but one. */ | |
769 | ||
de190aef LP |
770 | for (;;) { |
771 | bool found; | |
772 | ||
773 | if (j->current_location.type == LOCATION_DISCRETE) { | |
774 | int k; | |
775 | ||
487d3720 | 776 | k = compare_with_location(f, &j->current_location); |
1cdf7175 CH |
777 | |
778 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
779 | } else |
780 | found = true; | |
781 | ||
487d3720 | 782 | if (found) |
de190aef | 783 | return 1; |
de190aef LP |
784 | |
785 | r = next_with_matches(j, f, direction, &c, &cp); | |
786 | if (r <= 0) | |
787 | return r; | |
487d3720 | 788 | |
950c07d4 | 789 | journal_file_save_location(f, c, cp); |
de190aef LP |
790 | } |
791 | } | |
792 | ||
e892bd17 | 793 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de | 794 | JournalFile *f, *new_file = NULL; |
cec736d2 | 795 | Iterator i; |
a002d44b | 796 | Object *o; |
87d2c1ff LP |
797 | int r; |
798 | ||
1ae464e0 TA |
799 | assert_return(j, -EINVAL); |
800 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 801 | |
c1f906bd | 802 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 803 | bool found; |
87d2c1ff | 804 | |
58439db4 | 805 | r = next_beyond_location(j, f, direction); |
e590af26 | 806 | if (r < 0) { |
da927ba9 | 807 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 808 | remove_file_real(j, f); |
e590af26 | 809 | continue; |
6573ef05 MS |
810 | } else if (r == 0) { |
811 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 812 | continue; |
6573ef05 | 813 | } |
87d2c1ff | 814 | |
468b21de | 815 | if (!new_file) |
de190aef LP |
816 | found = true; |
817 | else { | |
818 | int k; | |
819 | ||
d8ae66d7 | 820 | k = journal_file_compare_locations(f, new_file); |
de190aef | 821 | |
bc302926 | 822 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
823 | } |
824 | ||
e499c999 | 825 | if (found) |
468b21de | 826 | new_file = f; |
87d2c1ff LP |
827 | } |
828 | ||
468b21de | 829 | if (!new_file) |
de190aef | 830 | return 0; |
ae2cc8ef | 831 | |
e499c999 | 832 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
833 | if (r < 0) |
834 | return r; | |
835 | ||
1eb6332d | 836 | set_location(j, new_file, o); |
ae2cc8ef | 837 | |
de190aef LP |
838 | return 1; |
839 | } | |
ae2cc8ef | 840 | |
a5344d2c | 841 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
842 | return real_journal_next(j, DIRECTION_DOWN); |
843 | } | |
ae2cc8ef | 844 | |
a5344d2c | 845 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
846 | return real_journal_next(j, DIRECTION_UP); |
847 | } | |
ae2cc8ef | 848 | |
6f003b43 | 849 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 850 | int c = 0, r; |
ae2cc8ef | 851 | |
1ae464e0 TA |
852 | assert_return(j, -EINVAL); |
853 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 854 | |
6f003b43 LP |
855 | if (skip == 0) { |
856 | /* If this is not a discrete skip, then at least | |
857 | * resolve the current location */ | |
858 | if (j->current_location.type != LOCATION_DISCRETE) | |
859 | return real_journal_next(j, direction); | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
864 | do { | |
865 | r = real_journal_next(j, direction); | |
de190aef LP |
866 | if (r < 0) |
867 | return r; | |
868 | ||
869 | if (r == 0) | |
870 | return c; | |
871 | ||
872 | skip--; | |
873 | c++; | |
6f003b43 | 874 | } while (skip > 0); |
87d2c1ff | 875 | |
de190aef | 876 | return c; |
87d2c1ff LP |
877 | } |
878 | ||
6f003b43 LP |
879 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
880 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
881 | } | |
de190aef | 882 | |
6f003b43 LP |
883 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
884 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
885 | } |
886 | ||
a5344d2c | 887 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 888 | Object *o; |
87d2c1ff | 889 | int r; |
3fbf9cbb | 890 | char bid[33], sid[33]; |
87d2c1ff | 891 | |
1ae464e0 TA |
892 | assert_return(j, -EINVAL); |
893 | assert_return(!journal_pid_changed(j), -ECHILD); | |
894 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 895 | |
3fbf9cbb LP |
896 | if (!j->current_file || j->current_file->current_offset <= 0) |
897 | return -EADDRNOTAVAIL; | |
87d2c1ff | 898 | |
de190aef | 899 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
900 | if (r < 0) |
901 | return r; | |
902 | ||
3fbf9cbb LP |
903 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
904 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 905 | |
3fbf9cbb | 906 | if (asprintf(cursor, |
507f22bd ZJS |
907 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
908 | sid, le64toh(o->entry.seqnum), | |
909 | bid, le64toh(o->entry.monotonic), | |
910 | le64toh(o->entry.realtime), | |
911 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 912 | return -ENOMEM; |
87d2c1ff | 913 | |
6f47ad30 | 914 | return 0; |
87d2c1ff LP |
915 | } |
916 | ||
a5344d2c | 917 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
a2a5291b | 918 | const char *word, *state; |
de190aef | 919 | size_t l; |
de190aef LP |
920 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
921 | bool | |
922 | seqnum_id_set = false, | |
923 | seqnum_set = false, | |
924 | boot_id_set = false, | |
925 | monotonic_set = false, | |
926 | realtime_set = false, | |
927 | xor_hash_set = false; | |
928 | sd_id128_t seqnum_id, boot_id; | |
929 | ||
1ae464e0 TA |
930 | assert_return(j, -EINVAL); |
931 | assert_return(!journal_pid_changed(j), -ECHILD); | |
932 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 933 | |
a2a5291b | 934 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
de190aef LP |
935 | char *item; |
936 | int k = 0; | |
937 | ||
a2a5291b | 938 | if (l < 2 || word[1] != '=') |
de190aef LP |
939 | return -EINVAL; |
940 | ||
a2a5291b | 941 | item = strndup(word, l); |
de190aef LP |
942 | if (!item) |
943 | return -ENOMEM; | |
944 | ||
a2a5291b | 945 | switch (word[0]) { |
de190aef LP |
946 | |
947 | case 's': | |
948 | seqnum_id_set = true; | |
be3ea5ea | 949 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
950 | break; |
951 | ||
952 | case 'i': | |
953 | seqnum_set = true; | |
be3ea5ea | 954 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
955 | k = -EINVAL; |
956 | break; | |
957 | ||
958 | case 'b': | |
959 | boot_id_set = true; | |
be3ea5ea | 960 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
961 | break; |
962 | ||
963 | case 'm': | |
964 | monotonic_set = true; | |
be3ea5ea | 965 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
966 | k = -EINVAL; |
967 | break; | |
968 | ||
969 | case 't': | |
970 | realtime_set = true; | |
be3ea5ea | 971 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
972 | k = -EINVAL; |
973 | break; | |
974 | ||
975 | case 'x': | |
976 | xor_hash_set = true; | |
be3ea5ea | 977 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
978 | k = -EINVAL; |
979 | break; | |
980 | } | |
981 | ||
982 | free(item); | |
983 | ||
984 | if (k < 0) | |
985 | return k; | |
986 | } | |
987 | ||
988 | if ((!seqnum_set || !seqnum_id_set) && | |
989 | (!monotonic_set || !boot_id_set) && | |
990 | !realtime_set) | |
991 | return -EINVAL; | |
992 | ||
993 | reset_location(j); | |
994 | ||
a87247dd | 995 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
996 | |
997 | if (realtime_set) { | |
998 | j->current_location.realtime = (uint64_t) realtime; | |
999 | j->current_location.realtime_set = true; | |
1000 | } | |
1001 | ||
1002 | if (seqnum_set && seqnum_id_set) { | |
1003 | j->current_location.seqnum = (uint64_t) seqnum; | |
1004 | j->current_location.seqnum_id = seqnum_id; | |
1005 | j->current_location.seqnum_set = true; | |
1006 | } | |
1007 | ||
1008 | if (monotonic_set && boot_id_set) { | |
1009 | j->current_location.monotonic = (uint64_t) monotonic; | |
1010 | j->current_location.boot_id = boot_id; | |
1011 | j->current_location.monotonic_set = true; | |
1012 | } | |
1013 | ||
1014 | if (xor_hash_set) { | |
1015 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1016 | j->current_location.xor_hash_set = true; | |
1017 | } | |
1018 | ||
1019 | return 0; | |
1020 | } | |
1021 | ||
c6511e85 LP |
1022 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1023 | int r; | |
a2a5291b | 1024 | const char *word, *state; |
c6511e85 LP |
1025 | size_t l; |
1026 | Object *o; | |
1027 | ||
1ae464e0 TA |
1028 | assert_return(j, -EINVAL); |
1029 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1030 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1031 | |
1032 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1033 | return -EADDRNOTAVAIL; | |
1034 | ||
1035 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1036 | if (r < 0) | |
1037 | return r; | |
1038 | ||
a2a5291b | 1039 | FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) { |
c6511e85 LP |
1040 | _cleanup_free_ char *item = NULL; |
1041 | sd_id128_t id; | |
1042 | unsigned long long ll; | |
1043 | int k = 0; | |
1044 | ||
a2a5291b | 1045 | if (l < 2 || word[1] != '=') |
c6511e85 LP |
1046 | return -EINVAL; |
1047 | ||
a2a5291b | 1048 | item = strndup(word, l); |
c6511e85 LP |
1049 | if (!item) |
1050 | return -ENOMEM; | |
1051 | ||
a2a5291b | 1052 | switch (word[0]) { |
c6511e85 LP |
1053 | |
1054 | case 's': | |
1055 | k = sd_id128_from_string(item+2, &id); | |
1056 | if (k < 0) | |
1057 | return k; | |
1058 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1059 | return 0; | |
1060 | break; | |
1061 | ||
1062 | case 'i': | |
1063 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1064 | return -EINVAL; | |
1065 | if (ll != le64toh(o->entry.seqnum)) | |
1066 | return 0; | |
1067 | break; | |
1068 | ||
1069 | case 'b': | |
1070 | k = sd_id128_from_string(item+2, &id); | |
1071 | if (k < 0) | |
1072 | return k; | |
1073 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1074 | return 0; | |
1075 | break; | |
1076 | ||
1077 | case 'm': | |
1078 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1079 | return -EINVAL; | |
1080 | if (ll != le64toh(o->entry.monotonic)) | |
1081 | return 0; | |
1082 | break; | |
1083 | ||
1084 | case 't': | |
1085 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1086 | return -EINVAL; | |
1087 | if (ll != le64toh(o->entry.realtime)) | |
1088 | return 0; | |
1089 | break; | |
1090 | ||
1091 | case 'x': | |
1092 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1093 | return -EINVAL; | |
1094 | if (ll != le64toh(o->entry.xor_hash)) | |
1095 | return 0; | |
1096 | break; | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | return 1; | |
1101 | } | |
1102 | ||
1103 | ||
a5344d2c | 1104 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1105 | assert_return(j, -EINVAL); |
1106 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1107 | |
1108 | reset_location(j); | |
a87247dd | 1109 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1110 | j->current_location.boot_id = boot_id; |
1111 | j->current_location.monotonic = usec; | |
1112 | j->current_location.monotonic_set = true; | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
a5344d2c | 1117 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1118 | assert_return(j, -EINVAL); |
1119 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1120 | |
1121 | reset_location(j); | |
a87247dd | 1122 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1123 | j->current_location.realtime = usec; |
1124 | j->current_location.realtime_set = true; | |
1125 | ||
1126 | return 0; | |
1127 | } | |
1128 | ||
a5344d2c | 1129 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1130 | assert_return(j, -EINVAL); |
1131 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1132 | |
1133 | reset_location(j); | |
1134 | j->current_location.type = LOCATION_HEAD; | |
1135 | ||
1136 | return 0; | |
1137 | } | |
1138 | ||
a5344d2c | 1139 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1140 | assert_return(j, -EINVAL); |
1141 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1142 | |
1143 | reset_location(j); | |
1144 | j->current_location.type = LOCATION_TAIL; | |
1145 | ||
1146 | return 0; | |
87d2c1ff LP |
1147 | } |
1148 | ||
85210bff LP |
1149 | static void check_network(sd_journal *j, int fd) { |
1150 | struct statfs sfs; | |
1151 | ||
1152 | assert(j); | |
1153 | ||
1154 | if (j->on_network) | |
1155 | return; | |
1156 | ||
1157 | if (fstatfs(fd, &sfs) < 0) | |
1158 | return; | |
1159 | ||
1160 | j->on_network = | |
c51cf056 ZJS |
1161 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1162 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1163 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1164 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1165 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1166 | } |
1167 | ||
a688baa8 ZJS |
1168 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1169 | const char *full, *tilded, *atted; | |
1170 | ||
63c372cb LP |
1171 | full = strjoina(prefix, ".journal"); |
1172 | tilded = strjoina(full, "~"); | |
1173 | atted = strjoina(prefix, "@"); | |
a688baa8 ZJS |
1174 | |
1175 | return streq(filename, full) || | |
1176 | streq(filename, tilded) || | |
1177 | startswith(filename, atted); | |
1178 | } | |
1179 | ||
1180 | static bool file_type_wanted(int flags, const char *filename) { | |
1181 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1182 | return false; | |
1183 | ||
1184 | /* no flags set → every type is OK */ | |
1185 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1186 | return true; | |
1187 | ||
1188 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1189 | return true; | |
1190 | ||
1191 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1192 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1193 | ||
5ffa8c81 | 1194 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1195 | |
1196 | if (file_has_type_prefix(prefix, filename)) | |
1197 | return true; | |
1198 | } | |
1199 | ||
1200 | return false; | |
1201 | } | |
1202 | ||
5302ebe1 | 1203 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1204 | JournalFile *f = NULL; |
5302ebe1 | 1205 | int r; |
3fbf9cbb LP |
1206 | |
1207 | assert(j); | |
5302ebe1 | 1208 | assert(path); |
3fbf9cbb | 1209 | |
c1f906bd | 1210 | if (ordered_hashmap_get(j->files, path)) |
50f20cfd | 1211 | return 0; |
50f20cfd | 1212 | |
9e8abdf0 LP |
1213 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { |
1214 | log_warning("Too many open journal files, not adding %s.", path); | |
1215 | return set_put_error(j, -ETOOMANYREFS); | |
1216 | } | |
1217 | ||
16e9f408 | 1218 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1219 | if (r < 0) |
3fbf9cbb | 1220 | return r; |
3fbf9cbb | 1221 | |
72f59706 | 1222 | /* journal_file_dump(f); */ |
de190aef | 1223 | |
c1f906bd | 1224 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb LP |
1225 | if (r < 0) { |
1226 | journal_file_close(f); | |
1227 | return r; | |
1228 | } | |
1229 | ||
5ec76417 | 1230 | log_debug("File %s added.", f->path); |
a50d7d43 | 1231 | |
85210bff LP |
1232 | check_network(j, f->fd); |
1233 | ||
a963990f LP |
1234 | j->current_invalidate_counter ++; |
1235 | ||
50f20cfd LP |
1236 | return 0; |
1237 | } | |
1238 | ||
5302ebe1 ZJS |
1239 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1240 | _cleanup_free_ char *path = NULL; | |
1241 | int r; | |
1242 | ||
1243 | assert(j); | |
1244 | assert(prefix); | |
1245 | assert(filename); | |
1246 | ||
1247 | if (j->no_new_files || | |
1248 | !file_type_wanted(j->flags, filename)) | |
1249 | return 0; | |
1250 | ||
1251 | path = strjoin(prefix, "/", filename, NULL); | |
1252 | if (!path) | |
1253 | return -ENOMEM; | |
1254 | ||
1255 | r = add_any_file(j, path); | |
1256 | if (r == -ENOENT) | |
1257 | return 0; | |
7b300be7 | 1258 | return r; |
5302ebe1 ZJS |
1259 | } |
1260 | ||
a963990f | 1261 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
a9a245c1 | 1262 | _cleanup_free_ char *path; |
50f20cfd LP |
1263 | JournalFile *f; |
1264 | ||
1265 | assert(j); | |
1266 | assert(prefix); | |
1267 | assert(filename); | |
1268 | ||
b7def684 | 1269 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1270 | if (!path) |
50f20cfd LP |
1271 | return -ENOMEM; |
1272 | ||
c1f906bd | 1273 | f = ordered_hashmap_get(j->files, path); |
50f20cfd LP |
1274 | if (!f) |
1275 | return 0; | |
1276 | ||
a9a245c1 ZJS |
1277 | remove_file_real(j, f); |
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1282 | assert(j); | |
1283 | assert(f); | |
1284 | ||
c1f906bd | 1285 | ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1286 | |
5ec76417 | 1287 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1288 | |
3c1668da LP |
1289 | if (j->current_file == f) { |
1290 | j->current_file = NULL; | |
1291 | j->current_field = 0; | |
1292 | } | |
1293 | ||
1294 | if (j->unique_file == f) { | |
360af4cf | 1295 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1296 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1297 | j->unique_offset = 0; |
360af4cf ZJS |
1298 | if (!j->unique_file) |
1299 | j->unique_file_lost = true; | |
3c1668da LP |
1300 | } |
1301 | ||
50f20cfd LP |
1302 | journal_file_close(f); |
1303 | ||
a963990f | 1304 | j->current_invalidate_counter ++; |
3fbf9cbb LP |
1305 | } |
1306 | ||
a963990f | 1307 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1308 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1309 | int r; |
7fd1b19b | 1310 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1311 | sd_id128_t id, mid; |
a963990f | 1312 | Directory *m; |
3fbf9cbb LP |
1313 | |
1314 | assert(j); | |
1315 | assert(prefix); | |
a963990f | 1316 | assert(dirname); |
3fbf9cbb | 1317 | |
d95b1fb3 ZJS |
1318 | log_debug("Considering %s/%s.", prefix, dirname); |
1319 | ||
cf244689 | 1320 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1321 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1322 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1323 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1324 | return 0; |
1325 | ||
b7def684 | 1326 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1327 | if (!path) |
3fbf9cbb LP |
1328 | return -ENOMEM; |
1329 | ||
a963990f | 1330 | d = opendir(path); |
3fbf9cbb | 1331 | if (!d) { |
56f64d95 | 1332 | log_debug_errno(errno, "Failed to open %s: %m", path); |
3fbf9cbb LP |
1333 | if (errno == ENOENT) |
1334 | return 0; | |
3fbf9cbb LP |
1335 | return -errno; |
1336 | } | |
1337 | ||
a963990f LP |
1338 | m = hashmap_get(j->directories_by_path, path); |
1339 | if (!m) { | |
1340 | m = new0(Directory, 1); | |
a50d7d43 | 1341 | if (!m) |
a963990f | 1342 | return -ENOMEM; |
a963990f LP |
1343 | |
1344 | m->is_root = false; | |
1345 | m->path = path; | |
1346 | ||
1347 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1348 | free(m); |
1349 | return -ENOMEM; | |
1350 | } | |
1351 | ||
a50d7d43 | 1352 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1353 | j->current_invalidate_counter ++; |
1354 | ||
5ec76417 | 1355 | log_debug("Directory %s added.", m->path); |
a963990f | 1356 | |
a50d7d43 | 1357 | } else if (m->is_root) |
a963990f | 1358 | return 0; |
a963990f LP |
1359 | |
1360 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1361 | ||
1362 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1363 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1364 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1365 | IN_ONLYDIR); |
a963990f LP |
1366 | |
1367 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1368 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1369 | } | |
1370 | ||
1371 | for (;;) { | |
7d5e9c0f | 1372 | struct dirent *de; |
a963990f | 1373 | |
bde1fdd7 FW |
1374 | errno = 0; |
1375 | de = readdir(d); | |
1376 | if (!de && errno != 0) { | |
1377 | r = -errno; | |
56f64d95 | 1378 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1379 | return r; |
1380 | } | |
1381 | if (!de) | |
a963990f LP |
1382 | break; |
1383 | ||
de2c3907 LP |
1384 | if (dirent_is_file_with_suffix(de, ".journal") || |
1385 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1386 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1387 | if (r < 0) { |
c33b3297 MS |
1388 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1389 | m->path, de->d_name); | |
3ac251b8 | 1390 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1391 | if (r < 0) |
1392 | return r; | |
1393 | } | |
a963990f LP |
1394 | } |
1395 | } | |
1396 | ||
85210bff LP |
1397 | check_network(j, dirfd(d)); |
1398 | ||
a963990f LP |
1399 | return 0; |
1400 | } | |
1401 | ||
89739579 | 1402 | static int add_root_directory(sd_journal *j, const char *p) { |
7fd1b19b | 1403 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1404 | Directory *m; |
1405 | int r; | |
1406 | ||
1407 | assert(j); | |
1408 | assert(p); | |
1409 | ||
1410 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1411 | !path_startswith(p, "/run")) | |
1412 | return -EINVAL; | |
1413 | ||
89739579 | 1414 | if (j->prefix) |
63c372cb | 1415 | p = strjoina(j->prefix, p); |
b6741478 | 1416 | |
a963990f LP |
1417 | d = opendir(p); |
1418 | if (!d) | |
1419 | return -errno; | |
1420 | ||
1421 | m = hashmap_get(j->directories_by_path, p); | |
1422 | if (!m) { | |
1423 | m = new0(Directory, 1); | |
a50d7d43 | 1424 | if (!m) |
a963990f | 1425 | return -ENOMEM; |
a963990f LP |
1426 | |
1427 | m->is_root = true; | |
1428 | m->path = strdup(p); | |
1429 | if (!m->path) { | |
a963990f LP |
1430 | free(m); |
1431 | return -ENOMEM; | |
1432 | } | |
1433 | ||
1434 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1435 | free(m->path); |
1436 | free(m); | |
1437 | return -ENOMEM; | |
1438 | } | |
1439 | ||
1440 | j->current_invalidate_counter ++; | |
1441 | ||
5ec76417 | 1442 | log_debug("Root directory %s added.", m->path); |
a963990f | 1443 | |
a50d7d43 | 1444 | } else if (!m->is_root) |
a963990f | 1445 | return 0; |
50f20cfd | 1446 | |
a963990f LP |
1447 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1448 | ||
1449 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1450 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1451 | IN_ONLYDIR); |
a963990f LP |
1452 | |
1453 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1454 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1455 | } | |
50f20cfd | 1456 | |
5302ebe1 ZJS |
1457 | if (j->no_new_files) |
1458 | return 0; | |
1459 | ||
3fbf9cbb | 1460 | for (;;) { |
7d5e9c0f | 1461 | struct dirent *de; |
a963990f | 1462 | sd_id128_t id; |
3fbf9cbb | 1463 | |
bde1fdd7 FW |
1464 | errno = 0; |
1465 | de = readdir(d); | |
1466 | if (!de && errno != 0) { | |
1467 | r = -errno; | |
56f64d95 | 1468 | log_debug_errno(errno, "Failed to read directory %s: %m", m->path); |
bde1fdd7 FW |
1469 | return r; |
1470 | } | |
1471 | if (!de) | |
3fbf9cbb LP |
1472 | break; |
1473 | ||
de2c3907 LP |
1474 | if (dirent_is_file_with_suffix(de, ".journal") || |
1475 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1476 | r = add_file(j, m->path, de->d_name); |
6fe391c5 | 1477 | if (r < 0) { |
c33b3297 MS |
1478 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
1479 | m->path, de->d_name); | |
3ac251b8 | 1480 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1481 | if (r < 0) |
1482 | return r; | |
1483 | } | |
6f5878a2 | 1484 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1485 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1486 | ||
1487 | r = add_directory(j, m->path, de->d_name); | |
1488 | if (r < 0) | |
da927ba9 | 1489 | log_debug_errno(r, "Failed to add directory %s/%s: %m", m->path, de->d_name); |
a963990f | 1490 | } |
3fbf9cbb LP |
1491 | } |
1492 | ||
85210bff LP |
1493 | check_network(j, dirfd(d)); |
1494 | ||
a963990f LP |
1495 | return 0; |
1496 | } | |
1497 | ||
b2b46f91 | 1498 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1499 | assert(j); |
1500 | ||
1501 | if (d->wd > 0) { | |
1502 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1503 | ||
1504 | if (j->inotify_fd >= 0) | |
1505 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1506 | } | |
1507 | ||
1508 | hashmap_remove(j->directories_by_path, d->path); | |
1509 | ||
1510 | if (d->is_root) | |
5ec76417 | 1511 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1512 | else |
5ec76417 | 1513 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1514 | |
1515 | free(d->path); | |
1516 | free(d); | |
3fbf9cbb LP |
1517 | } |
1518 | ||
89739579 | 1519 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1520 | int r; |
a963990f LP |
1521 | const char search_paths[] = |
1522 | "/run/log/journal\0" | |
1523 | "/var/log/journal\0"; | |
1524 | const char *p; | |
50f20cfd LP |
1525 | |
1526 | assert(j); | |
50f20cfd | 1527 | |
a963990f LP |
1528 | /* We ignore most errors here, since the idea is to only open |
1529 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1530 | |
6fe391c5 | 1531 | NULSTR_FOREACH(p, search_paths) { |
89739579 | 1532 | r = add_root_directory(j, p); |
3ac251b8 LP |
1533 | if (r < 0 && r != -ENOENT) { |
1534 | r = set_put_error(j, r); | |
1535 | if (r < 0) | |
1536 | return r; | |
1537 | } | |
6fe391c5 | 1538 | } |
50f20cfd | 1539 | |
a963990f | 1540 | return 0; |
50f20cfd LP |
1541 | } |
1542 | ||
5302ebe1 ZJS |
1543 | static int add_current_paths(sd_journal *j) { |
1544 | Iterator i; | |
1545 | JournalFile *f; | |
1546 | ||
1547 | assert(j); | |
1548 | assert(j->no_new_files); | |
1549 | ||
1550 | /* Simply adds all directories for files we have open as | |
1551 | * "root" directories. We don't expect errors here, so we | |
1552 | * treat them as fatal. */ | |
1553 | ||
c1f906bd | 1554 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
5302ebe1 | 1555 | _cleanup_free_ char *dir; |
e9174f29 | 1556 | int r; |
5302ebe1 ZJS |
1557 | |
1558 | dir = dirname_malloc(f->path); | |
1559 | if (!dir) | |
1560 | return -ENOMEM; | |
1561 | ||
89739579 | 1562 | r = add_root_directory(j, dir); |
5302ebe1 ZJS |
1563 | if (r < 0) { |
1564 | set_put_error(j, r); | |
1565 | return r; | |
1566 | } | |
1567 | } | |
1568 | ||
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | ||
a963990f | 1573 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1574 | assert(j); |
50f20cfd | 1575 | |
a963990f LP |
1576 | if (j->inotify_fd < 0) { |
1577 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1578 | if (j->inotify_fd < 0) | |
1579 | return -errno; | |
1580 | } | |
50f20cfd | 1581 | |
a963990f | 1582 | if (!j->directories_by_wd) { |
d5099efc | 1583 | j->directories_by_wd = hashmap_new(NULL); |
a963990f LP |
1584 | if (!j->directories_by_wd) |
1585 | return -ENOMEM; | |
50f20cfd | 1586 | } |
a963990f LP |
1587 | |
1588 | return 0; | |
50f20cfd LP |
1589 | } |
1590 | ||
7827b1a1 | 1591 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1592 | sd_journal *j; |
50f20cfd | 1593 | |
a963990f LP |
1594 | j = new0(sd_journal, 1); |
1595 | if (!j) | |
1596 | return NULL; | |
50f20cfd | 1597 | |
a65f06bb | 1598 | j->original_pid = getpid(); |
a963990f LP |
1599 | j->inotify_fd = -1; |
1600 | j->flags = flags; | |
93b73b06 | 1601 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1602 | |
7827b1a1 LP |
1603 | if (path) { |
1604 | j->path = strdup(path); | |
6180fc61 ZJS |
1605 | if (!j->path) |
1606 | goto fail; | |
7827b1a1 LP |
1607 | } |
1608 | ||
c1f906bd | 1609 | j->files = ordered_hashmap_new(&string_hash_ops); |
d5099efc | 1610 | j->directories_by_path = hashmap_new(&string_hash_ops); |
84168d80 | 1611 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1612 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1613 | goto fail; |
16e9f408 | 1614 | |
a963990f | 1615 | return j; |
6180fc61 ZJS |
1616 | |
1617 | fail: | |
1618 | sd_journal_close(j); | |
1619 | return NULL; | |
50f20cfd LP |
1620 | } |
1621 | ||
a5344d2c | 1622 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1623 | sd_journal *j; |
3fbf9cbb | 1624 | int r; |
87d2c1ff | 1625 | |
1ae464e0 | 1626 | assert_return(ret, -EINVAL); |
b6741478 | 1627 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1628 | |
7827b1a1 | 1629 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1630 | if (!j) |
1631 | return -ENOMEM; | |
1632 | ||
89739579 | 1633 | r = add_search_paths(j); |
a963990f | 1634 | if (r < 0) |
50f20cfd | 1635 | goto fail; |
50f20cfd | 1636 | |
a963990f LP |
1637 | *ret = j; |
1638 | return 0; | |
cf244689 | 1639 | |
a963990f LP |
1640 | fail: |
1641 | sd_journal_close(j); | |
87d2c1ff | 1642 | |
a963990f LP |
1643 | return r; |
1644 | } | |
50f20cfd | 1645 | |
b6741478 LP |
1646 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1647 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1648 | sd_journal *j; | |
1649 | char *p; | |
1650 | int r; | |
1651 | ||
1652 | assert_return(machine, -EINVAL); | |
1653 | assert_return(ret, -EINVAL); | |
1654 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
affcf189 | 1655 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1656 | |
63c372cb | 1657 | p = strjoina("/run/systemd/machines/", machine); |
b6741478 LP |
1658 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); |
1659 | if (r == -ENOENT) | |
1660 | return -EHOSTDOWN; | |
1661 | if (r < 0) | |
1662 | return r; | |
1663 | if (!root) | |
1664 | return -ENODATA; | |
1665 | ||
1666 | if (!streq_ptr(class, "container")) | |
1667 | return -EIO; | |
1668 | ||
1669 | j = journal_new(flags, NULL); | |
1670 | if (!j) | |
1671 | return -ENOMEM; | |
1672 | ||
89739579 LP |
1673 | j->prefix = root; |
1674 | root = NULL; | |
1675 | ||
1676 | r = add_search_paths(j); | |
b6741478 LP |
1677 | if (r < 0) |
1678 | goto fail; | |
1679 | ||
1680 | *ret = j; | |
1681 | return 0; | |
1682 | ||
1683 | fail: | |
1684 | sd_journal_close(j); | |
1685 | return r; | |
1686 | } | |
1687 | ||
a963990f LP |
1688 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1689 | sd_journal *j; | |
1690 | int r; | |
87d2c1ff | 1691 | |
1ae464e0 TA |
1692 | assert_return(ret, -EINVAL); |
1693 | assert_return(path, -EINVAL); | |
1694 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1695 | |
7827b1a1 | 1696 | j = journal_new(flags, path); |
a963990f LP |
1697 | if (!j) |
1698 | return -ENOMEM; | |
3fbf9cbb | 1699 | |
89739579 | 1700 | r = add_root_directory(j, path); |
6fe391c5 | 1701 | if (r < 0) { |
3ac251b8 | 1702 | set_put_error(j, r); |
a963990f | 1703 | goto fail; |
6fe391c5 | 1704 | } |
87d2c1ff LP |
1705 | |
1706 | *ret = j; | |
1707 | return 0; | |
1708 | ||
1709 | fail: | |
1710 | sd_journal_close(j); | |
1711 | ||
1712 | return r; | |
a963990f | 1713 | } |
87d2c1ff | 1714 | |
5302ebe1 ZJS |
1715 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1716 | sd_journal *j; | |
1717 | const char **path; | |
1718 | int r; | |
1719 | ||
1ae464e0 TA |
1720 | assert_return(ret, -EINVAL); |
1721 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1722 | |
1723 | j = journal_new(flags, NULL); | |
1724 | if (!j) | |
1725 | return -ENOMEM; | |
1726 | ||
1727 | STRV_FOREACH(path, paths) { | |
1728 | r = add_any_file(j, *path); | |
1729 | if (r < 0) { | |
da927ba9 | 1730 | log_error_errno(r, "Failed to open %s: %m", *path); |
5302ebe1 ZJS |
1731 | goto fail; |
1732 | } | |
1733 | } | |
1734 | ||
1735 | j->no_new_files = true; | |
1736 | ||
1737 | *ret = j; | |
1738 | return 0; | |
1739 | ||
1740 | fail: | |
1741 | sd_journal_close(j); | |
1742 | ||
1743 | return r; | |
1744 | } | |
1745 | ||
a5344d2c | 1746 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1747 | Directory *d; |
1748 | JournalFile *f; | |
1749 | ||
a5344d2c LP |
1750 | if (!j) |
1751 | return; | |
87d2c1ff | 1752 | |
54b1da83 LP |
1753 | sd_journal_flush_matches(j); |
1754 | ||
c1f906bd | 1755 | while ((f = ordered_hashmap_steal_first(j->files))) |
a963990f | 1756 | journal_file_close(f); |
50f20cfd | 1757 | |
c1f906bd | 1758 | ordered_hashmap_free(j->files); |
260a2be4 | 1759 | |
a963990f LP |
1760 | while ((d = hashmap_first(j->directories_by_path))) |
1761 | remove_directory(j, d); | |
260a2be4 | 1762 | |
a963990f LP |
1763 | while ((d = hashmap_first(j->directories_by_wd))) |
1764 | remove_directory(j, d); | |
87d2c1ff | 1765 | |
a963990f LP |
1766 | hashmap_free(j->directories_by_path); |
1767 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1768 | |
03e334a1 | 1769 | safe_close(j->inotify_fd); |
50f20cfd | 1770 | |
bf807d4d LP |
1771 | if (j->mmap) { |
1772 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1773 | mmap_cache_unref(j->mmap); |
bf807d4d | 1774 | } |
16e9f408 | 1775 | |
7827b1a1 | 1776 | free(j->path); |
89739579 | 1777 | free(j->prefix); |
3c1668da | 1778 | free(j->unique_field); |
6fe391c5 | 1779 | set_free(j->errors); |
87d2c1ff LP |
1780 | free(j); |
1781 | } | |
3fbf9cbb | 1782 | |
a5344d2c | 1783 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1784 | Object *o; |
1785 | JournalFile *f; | |
1786 | int r; | |
1787 | ||
1ae464e0 TA |
1788 | assert_return(j, -EINVAL); |
1789 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1790 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1791 | |
1792 | f = j->current_file; | |
1793 | if (!f) | |
de190aef | 1794 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1795 | |
1796 | if (f->current_offset <= 0) | |
de190aef | 1797 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1798 | |
de190aef | 1799 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1800 | if (r < 0) |
1801 | return r; | |
1802 | ||
1803 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1804 | return 0; |
3fbf9cbb LP |
1805 | } |
1806 | ||
a5344d2c | 1807 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1808 | Object *o; |
1809 | JournalFile *f; | |
1810 | int r; | |
1811 | sd_id128_t id; | |
1812 | ||
1ae464e0 TA |
1813 | assert_return(j, -EINVAL); |
1814 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1815 | |
1816 | f = j->current_file; | |
1817 | if (!f) | |
de190aef | 1818 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1819 | |
1820 | if (f->current_offset <= 0) | |
de190aef | 1821 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1822 | |
de190aef | 1823 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1824 | if (r < 0) |
1825 | return r; | |
1826 | ||
de190aef LP |
1827 | if (ret_boot_id) |
1828 | *ret_boot_id = o->entry.boot_id; | |
1829 | else { | |
1830 | r = sd_id128_get_boot(&id); | |
1831 | if (r < 0) | |
1832 | return r; | |
3fbf9cbb | 1833 | |
de190aef | 1834 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1835 | return -ESTALE; |
de190aef | 1836 | } |
3fbf9cbb | 1837 | |
14a65d65 LP |
1838 | if (ret) |
1839 | *ret = le64toh(o->entry.monotonic); | |
1840 | ||
de190aef | 1841 | return 0; |
3fbf9cbb LP |
1842 | } |
1843 | ||
362a3f81 LP |
1844 | static bool field_is_valid(const char *field) { |
1845 | const char *p; | |
1846 | ||
1847 | assert(field); | |
1848 | ||
1849 | if (isempty(field)) | |
1850 | return false; | |
1851 | ||
1852 | if (startswith(field, "__")) | |
1853 | return false; | |
1854 | ||
1855 | for (p = field; *p; p++) { | |
1856 | ||
1857 | if (*p == '_') | |
1858 | continue; | |
1859 | ||
1860 | if (*p >= 'A' && *p <= 'Z') | |
1861 | continue; | |
1862 | ||
1863 | if (*p >= '0' && *p <= '9') | |
1864 | continue; | |
1865 | ||
1866 | return false; | |
1867 | } | |
1868 | ||
1869 | return true; | |
1870 | } | |
1871 | ||
a5344d2c | 1872 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1873 | JournalFile *f; |
1874 | uint64_t i, n; | |
1875 | size_t field_length; | |
1876 | int r; | |
1877 | Object *o; | |
1878 | ||
1ae464e0 TA |
1879 | assert_return(j, -EINVAL); |
1880 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1881 | assert_return(field, -EINVAL); | |
1882 | assert_return(data, -EINVAL); | |
1883 | assert_return(size, -EINVAL); | |
1884 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
1885 | |
1886 | f = j->current_file; | |
1887 | if (!f) | |
de190aef | 1888 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1889 | |
1890 | if (f->current_offset <= 0) | |
de190aef | 1891 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1892 | |
de190aef | 1893 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1894 | if (r < 0) |
1895 | return r; | |
1896 | ||
1897 | field_length = strlen(field); | |
1898 | ||
1899 | n = journal_file_entry_n_items(o); | |
1900 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1901 | uint64_t p, l; |
1902 | le64_t le_hash; | |
3fbf9cbb | 1903 | size_t t; |
1ec7120e | 1904 | int compression; |
3fbf9cbb LP |
1905 | |
1906 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1907 | le_hash = o->entry.items[i].hash; |
de190aef | 1908 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1909 | if (r < 0) |
1910 | return r; | |
1911 | ||
de190aef | 1912 | if (le_hash != o->data.hash) |
de7b95cd LP |
1913 | return -EBADMSG; |
1914 | ||
3fbf9cbb LP |
1915 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1916 | ||
1ec7120e | 1917 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 ZJS |
1918 | if (compression) { |
1919 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) | |
1920 | if (decompress_startswith(compression, | |
1921 | o->data.payload, l, | |
1922 | &f->compress_buffer, &f->compress_buffer_size, | |
1923 | field, field_length, '=')) { | |
1924 | ||
fa1c4b51 | 1925 | size_t rsize; |
3b1a55e1 ZJS |
1926 | |
1927 | r = decompress_blob(compression, | |
1928 | o->data.payload, l, | |
1929 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
1930 | j->data_threshold); | |
1931 | if (r < 0) | |
1932 | return r; | |
807e17f0 | 1933 | |
3b1a55e1 ZJS |
1934 | *data = f->compress_buffer; |
1935 | *size = (size_t) rsize; | |
807e17f0 | 1936 | |
3b1a55e1 ZJS |
1937 | return 0; |
1938 | } | |
1939 | #else | |
1940 | return -EPROTONOSUPPORT; | |
1941 | #endif | |
807e17f0 LP |
1942 | } else if (l >= field_length+1 && |
1943 | memcmp(o->data.payload, field, field_length) == 0 && | |
1944 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 1945 | |
161e54f8 | 1946 | t = (size_t) l; |
3fbf9cbb | 1947 | |
161e54f8 LP |
1948 | if ((uint64_t) t != l) |
1949 | return -E2BIG; | |
3fbf9cbb | 1950 | |
161e54f8 LP |
1951 | *data = o->data.payload; |
1952 | *size = t; | |
3fbf9cbb | 1953 | |
99613ec5 | 1954 | return 0; |
161e54f8 | 1955 | } |
3fbf9cbb | 1956 | |
de190aef | 1957 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
1958 | if (r < 0) |
1959 | return r; | |
3fbf9cbb LP |
1960 | } |
1961 | ||
de190aef | 1962 | return -ENOENT; |
3fbf9cbb LP |
1963 | } |
1964 | ||
93b73b06 | 1965 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
1966 | size_t t; |
1967 | uint64_t l; | |
3b1a55e1 | 1968 | int compression; |
3c1668da LP |
1969 | |
1970 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
1971 | t = (size_t) l; | |
1972 | ||
1973 | /* We can't read objects larger than 4G on a 32bit machine */ | |
1974 | if ((uint64_t) t != l) | |
1975 | return -E2BIG; | |
1976 | ||
1ec7120e ZJS |
1977 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
1978 | if (compression) { | |
3b1a55e1 | 1979 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fa1c4b51 | 1980 | size_t rsize; |
3b1a55e1 | 1981 | int r; |
3c1668da | 1982 | |
1ec7120e ZJS |
1983 | r = decompress_blob(compression, |
1984 | o->data.payload, l, &f->compress_buffer, | |
1985 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
1986 | if (r < 0) | |
1987 | return r; | |
3c1668da LP |
1988 | |
1989 | *data = f->compress_buffer; | |
1990 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
1991 | #else |
1992 | return -EPROTONOSUPPORT; | |
1993 | #endif | |
3c1668da LP |
1994 | } else { |
1995 | *data = o->data.payload; | |
1996 | *size = t; | |
1997 | } | |
1998 | ||
1999 | return 0; | |
2000 | } | |
2001 | ||
a5344d2c | 2002 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2003 | JournalFile *f; |
3c1668da | 2004 | uint64_t p, n; |
4fd052ae | 2005 | le64_t le_hash; |
3fbf9cbb LP |
2006 | int r; |
2007 | Object *o; | |
2008 | ||
1ae464e0 TA |
2009 | assert_return(j, -EINVAL); |
2010 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2011 | assert_return(data, -EINVAL); | |
2012 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2013 | |
2014 | f = j->current_file; | |
2015 | if (!f) | |
de190aef | 2016 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2017 | |
2018 | if (f->current_offset <= 0) | |
de190aef | 2019 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2020 | |
de190aef | 2021 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2022 | if (r < 0) |
2023 | return r; | |
2024 | ||
2025 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2026 | if (j->current_field >= n) |
3fbf9cbb LP |
2027 | return 0; |
2028 | ||
7210bfb3 | 2029 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2030 | le_hash = o->entry.items[j->current_field].hash; |
2031 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2032 | if (r < 0) |
2033 | return r; | |
2034 | ||
de190aef | 2035 | if (le_hash != o->data.hash) |
de7b95cd LP |
2036 | return -EBADMSG; |
2037 | ||
93b73b06 | 2038 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2039 | if (r < 0) |
2040 | return r; | |
3fbf9cbb | 2041 | |
7210bfb3 | 2042 | j->current_field ++; |
3fbf9cbb LP |
2043 | |
2044 | return 1; | |
2045 | } | |
c2373f84 | 2046 | |
a5344d2c LP |
2047 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2048 | if (!j) | |
2049 | return; | |
8725d60a LP |
2050 | |
2051 | j->current_field = 0; | |
c2373f84 | 2052 | } |
50f20cfd | 2053 | |
a5344d2c | 2054 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2055 | int r; |
2056 | ||
1ae464e0 TA |
2057 | assert_return(j, -EINVAL); |
2058 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2059 | |
a963990f LP |
2060 | if (j->inotify_fd >= 0) |
2061 | return j->inotify_fd; | |
2062 | ||
2063 | r = allocate_inotify(j); | |
2064 | if (r < 0) | |
2065 | return r; | |
2066 | ||
2067 | /* Iterate through all dirs again, to add them to the | |
2068 | * inotify */ | |
5302ebe1 ZJS |
2069 | if (j->no_new_files) |
2070 | r = add_current_paths(j); | |
2071 | else if (j->path) | |
89739579 | 2072 | r = add_root_directory(j, j->path); |
7827b1a1 | 2073 | else |
89739579 | 2074 | r = add_search_paths(j); |
a963990f LP |
2075 | if (r < 0) |
2076 | return r; | |
2077 | ||
50f20cfd LP |
2078 | return j->inotify_fd; |
2079 | } | |
2080 | ||
ee531d94 LP |
2081 | _public_ int sd_journal_get_events(sd_journal *j) { |
2082 | int fd; | |
2083 | ||
1ae464e0 TA |
2084 | assert_return(j, -EINVAL); |
2085 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2086 | |
2087 | fd = sd_journal_get_fd(j); | |
2088 | if (fd < 0) | |
2089 | return fd; | |
2090 | ||
2091 | return POLLIN; | |
2092 | } | |
2093 | ||
39c155ea LP |
2094 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2095 | int fd; | |
2096 | ||
1ae464e0 TA |
2097 | assert_return(j, -EINVAL); |
2098 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2099 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2100 | |
2101 | fd = sd_journal_get_fd(j); | |
2102 | if (fd < 0) | |
2103 | return fd; | |
2104 | ||
2105 | if (!j->on_network) { | |
2106 | *timeout_usec = (uint64_t) -1; | |
2107 | return 0; | |
2108 | } | |
2109 | ||
2110 | /* If we are on the network we need to regularly check for | |
2111 | * changes manually */ | |
2112 | ||
2113 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2114 | return 1; | |
2115 | } | |
2116 | ||
50f20cfd | 2117 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2118 | Directory *d; |
50f20cfd LP |
2119 | int r; |
2120 | ||
2121 | assert(j); | |
2122 | assert(e); | |
2123 | ||
2124 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2125 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2126 | if (d) { | |
2127 | sd_id128_t id; | |
50f20cfd | 2128 | |
de2c3907 LP |
2129 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2130 | (endswith(e->name, ".journal") || | |
2131 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2132 | |
2133 | /* Event for a journal file */ | |
2134 | ||
2135 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2136 | r = add_file(j, d->path, e->name); |
6fe391c5 | 2137 | if (r < 0) { |
c33b3297 MS |
2138 | log_debug_errno(r, "Failed to add file %s/%s: %m", |
2139 | d->path, e->name); | |
3ac251b8 | 2140 | set_put_error(j, r); |
6fe391c5 | 2141 | } |
a963990f | 2142 | |
5e6870ea | 2143 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2144 | |
a963990f | 2145 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2146 | if (r < 0) |
da927ba9 | 2147 | log_debug_errno(r, "Failed to remove file %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2148 | } |
2149 | ||
a963990f | 2150 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2151 | |
a963990f | 2152 | /* Event for a subdirectory */ |
50f20cfd | 2153 | |
b2b46f91 TA |
2154 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2155 | remove_directory(j, d); | |
50f20cfd | 2156 | |
a963990f | 2157 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2158 | |
a963990f | 2159 | /* Event for root directory */ |
50f20cfd | 2160 | |
a963990f LP |
2161 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2162 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2163 | if (r < 0) |
da927ba9 | 2164 | log_debug_errno(r, "Failed to add directory %s/%s: %m", d->path, e->name); |
50f20cfd LP |
2165 | } |
2166 | } | |
2167 | ||
2168 | return; | |
2169 | } | |
2170 | ||
2171 | if (e->mask & IN_IGNORED) | |
2172 | return; | |
2173 | ||
2174 | log_warning("Unknown inotify event."); | |
2175 | } | |
2176 | ||
a963990f LP |
2177 | static int determine_change(sd_journal *j) { |
2178 | bool b; | |
2179 | ||
2180 | assert(j); | |
2181 | ||
2182 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2183 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2184 | ||
2185 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2186 | } | |
2187 | ||
a5344d2c | 2188 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2189 | bool got_something = false; |
50f20cfd | 2190 | |
1ae464e0 TA |
2191 | assert_return(j, -EINVAL); |
2192 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2193 | |
39c155ea LP |
2194 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2195 | ||
50f20cfd | 2196 | for (;;) { |
0254e944 | 2197 | union inotify_event_buffer buffer; |
50f20cfd LP |
2198 | struct inotify_event *e; |
2199 | ssize_t l; | |
2200 | ||
0254e944 | 2201 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2202 | if (l < 0) { |
a963990f LP |
2203 | if (errno == EAGAIN || errno == EINTR) |
2204 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2205 | |
2206 | return -errno; | |
2207 | } | |
2208 | ||
a963990f LP |
2209 | got_something = true; |
2210 | ||
f7c1ad4f | 2211 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2212 | process_inotify_event(j, e); |
50f20cfd LP |
2213 | } |
2214 | } | |
6ad1d1c3 | 2215 | |
e02d1cf7 | 2216 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2217 | int r; |
39c155ea | 2218 | uint64_t t; |
e02d1cf7 | 2219 | |
1ae464e0 TA |
2220 | assert_return(j, -EINVAL); |
2221 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2222 | |
a963990f LP |
2223 | if (j->inotify_fd < 0) { |
2224 | ||
2225 | /* This is the first invocation, hence create the | |
2226 | * inotify watch */ | |
2227 | r = sd_journal_get_fd(j); | |
2228 | if (r < 0) | |
2229 | return r; | |
2230 | ||
2231 | /* The journal might have changed since the context | |
2232 | * object was created and we weren't watching before, | |
2233 | * hence don't wait for anything, and return | |
2234 | * immediately. */ | |
2235 | return determine_change(j); | |
2236 | } | |
2237 | ||
39c155ea LP |
2238 | r = sd_journal_get_timeout(j, &t); |
2239 | if (r < 0) | |
2240 | return r; | |
2241 | ||
2242 | if (t != (uint64_t) -1) { | |
2243 | usec_t n; | |
2244 | ||
2245 | n = now(CLOCK_MONOTONIC); | |
2246 | t = t > n ? t - n : 0; | |
85210bff | 2247 | |
39c155ea LP |
2248 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2249 | timeout_usec = t; | |
85210bff LP |
2250 | } |
2251 | ||
a963990f LP |
2252 | do { |
2253 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2254 | } while (r == -EINTR); | |
e02d1cf7 LP |
2255 | |
2256 | if (r < 0) | |
2257 | return r; | |
2258 | ||
a963990f | 2259 | return sd_journal_process(j); |
e02d1cf7 LP |
2260 | } |
2261 | ||
08984293 LP |
2262 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2263 | Iterator i; | |
2264 | JournalFile *f; | |
2265 | bool first = true; | |
581483bf | 2266 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2267 | int r; |
2268 | ||
1ae464e0 TA |
2269 | assert_return(j, -EINVAL); |
2270 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2271 | assert_return(from || to, -EINVAL); | |
2272 | assert_return(from != to, -EINVAL); | |
08984293 | 2273 | |
c1f906bd | 2274 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2275 | usec_t fr, t; |
2276 | ||
2277 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2278 | if (r == -ENOENT) |
2279 | continue; | |
08984293 LP |
2280 | if (r < 0) |
2281 | return r; | |
2282 | if (r == 0) | |
2283 | continue; | |
2284 | ||
2285 | if (first) { | |
581483bf LP |
2286 | fmin = fr; |
2287 | tmax = t; | |
08984293 LP |
2288 | first = false; |
2289 | } else { | |
581483bf LP |
2290 | fmin = MIN(fr, fmin); |
2291 | tmax = MAX(t, tmax); | |
08984293 LP |
2292 | } |
2293 | } | |
2294 | ||
581483bf LP |
2295 | if (from) |
2296 | *from = fmin; | |
2297 | if (to) | |
2298 | *to = tmax; | |
2299 | ||
08984293 LP |
2300 | return first ? 0 : 1; |
2301 | } | |
2302 | ||
2303 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2304 | Iterator i; | |
2305 | JournalFile *f; | |
1651e2c6 | 2306 | bool found = false; |
08984293 LP |
2307 | int r; |
2308 | ||
1ae464e0 TA |
2309 | assert_return(j, -EINVAL); |
2310 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2311 | assert_return(from || to, -EINVAL); | |
2312 | assert_return(from != to, -EINVAL); | |
08984293 | 2313 | |
c1f906bd | 2314 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
08984293 LP |
2315 | usec_t fr, t; |
2316 | ||
2317 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2318 | if (r == -ENOENT) |
2319 | continue; | |
08984293 LP |
2320 | if (r < 0) |
2321 | return r; | |
2322 | if (r == 0) | |
2323 | continue; | |
2324 | ||
1651e2c6 | 2325 | if (found) { |
08984293 | 2326 | if (from) |
1651e2c6 | 2327 | *from = MIN(fr, *from); |
08984293 | 2328 | if (to) |
1651e2c6 | 2329 | *to = MAX(t, *to); |
08984293 LP |
2330 | } else { |
2331 | if (from) | |
1651e2c6 | 2332 | *from = fr; |
08984293 | 2333 | if (to) |
1651e2c6 ZJS |
2334 | *to = t; |
2335 | found = true; | |
08984293 LP |
2336 | } |
2337 | } | |
2338 | ||
1651e2c6 | 2339 | return found; |
08984293 LP |
2340 | } |
2341 | ||
dca6219e LP |
2342 | void journal_print_header(sd_journal *j) { |
2343 | Iterator i; | |
2344 | JournalFile *f; | |
2345 | bool newline = false; | |
2346 | ||
2347 | assert(j); | |
2348 | ||
c1f906bd | 2349 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
dca6219e LP |
2350 | if (newline) |
2351 | putchar('\n'); | |
2352 | else | |
2353 | newline = true; | |
2354 | ||
2355 | journal_file_print_header(f); | |
2356 | } | |
2357 | } | |
08984293 | 2358 | |
a1a03e30 LP |
2359 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2360 | Iterator i; | |
2361 | JournalFile *f; | |
2362 | uint64_t sum = 0; | |
2363 | ||
1ae464e0 TA |
2364 | assert_return(j, -EINVAL); |
2365 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2366 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2367 | |
c1f906bd | 2368 | ORDERED_HASHMAP_FOREACH(f, j->files, i) { |
a1a03e30 LP |
2369 | struct stat st; |
2370 | ||
2371 | if (fstat(f->fd, &st) < 0) | |
2372 | return -errno; | |
2373 | ||
2374 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2375 | } | |
2376 | ||
2377 | *bytes = sum; | |
2378 | return 0; | |
2379 | } | |
2380 | ||
3c1668da LP |
2381 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2382 | char *f; | |
2383 | ||
1ae464e0 TA |
2384 | assert_return(j, -EINVAL); |
2385 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2386 | assert_return(!isempty(field), -EINVAL); | |
2387 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2388 | |
2389 | f = strdup(field); | |
2390 | if (!f) | |
2391 | return -ENOMEM; | |
2392 | ||
2393 | free(j->unique_field); | |
2394 | j->unique_field = f; | |
2395 | j->unique_file = NULL; | |
2396 | j->unique_offset = 0; | |
360af4cf | 2397 | j->unique_file_lost = false; |
3c1668da LP |
2398 | |
2399 | return 0; | |
2400 | } | |
2401 | ||
2402 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2403 | size_t k; |
19a2bd80 | 2404 | |
1ae464e0 TA |
2405 | assert_return(j, -EINVAL); |
2406 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2407 | assert_return(data, -EINVAL); | |
2408 | assert_return(l, -EINVAL); | |
2409 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2410 | |
3c1668da | 2411 | k = strlen(j->unique_field); |
19a2bd80 | 2412 | |
3c1668da | 2413 | if (!j->unique_file) { |
360af4cf ZJS |
2414 | if (j->unique_file_lost) |
2415 | return 0; | |
2416 | ||
c1f906bd | 2417 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2418 | if (!j->unique_file) |
2419 | return 0; | |
360af4cf | 2420 | |
3c1668da LP |
2421 | j->unique_offset = 0; |
2422 | } | |
19a2bd80 | 2423 | |
3c1668da LP |
2424 | for (;;) { |
2425 | JournalFile *of; | |
2426 | Iterator i; | |
ae97089d | 2427 | Object *o; |
3c1668da LP |
2428 | const void *odata; |
2429 | size_t ol; | |
2430 | bool found; | |
ae97089d | 2431 | int r; |
3c1668da | 2432 | |
bdc02927 | 2433 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2434 | if (j->unique_offset == 0) { |
2435 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2436 | if (r < 0) | |
2437 | return r; | |
2438 | ||
2439 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2440 | } else { | |
2441 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2442 | if (r < 0) | |
2443 | return r; | |
2444 | ||
2445 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2446 | } | |
2447 | ||
2448 | /* We reached the end of the list? Then start again, with the next file */ | |
2449 | if (j->unique_offset == 0) { | |
c1f906bd | 2450 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2451 | if (!j->unique_file) |
3c1668da LP |
2452 | return 0; |
2453 | ||
3c1668da LP |
2454 | continue; |
2455 | } | |
2456 | ||
d05089d8 MS |
2457 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2458 | * instead, so that we can look at this data object at the same | |
3c1668da | 2459 | * time as one on another file */ |
d05089d8 | 2460 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2461 | if (r < 0) |
2462 | return r; | |
2463 | ||
2464 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d | 2465 | if (o->object.type != OBJECT_DATA) { |
36202fd2 | 2466 | log_debug("%s:offset " OFSfmt ": object has type %d, expected %d", |
ae97089d ZJS |
2467 | j->unique_file->path, j->unique_offset, |
2468 | o->object.type, OBJECT_DATA); | |
3c1668da | 2469 | return -EBADMSG; |
ae97089d ZJS |
2470 | } |
2471 | ||
93b73b06 | 2472 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2473 | if (r < 0) |
2474 | return r; | |
2475 | ||
0f99f74a ZJS |
2476 | /* Check if we have at least the field name and "=". */ |
2477 | if (ol <= k) { | |
2478 | log_debug("%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2479 | j->unique_file->path, j->unique_offset, | |
2480 | ol, k + 1); | |
2481 | return -EBADMSG; | |
2482 | } | |
2483 | ||
2484 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') { | |
2485 | log_debug("%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2486 | j->unique_file->path, j->unique_offset, | |
2487 | j->unique_field); | |
2488 | return -EBADMSG; | |
2489 | } | |
2490 | ||
3c1668da LP |
2491 | /* OK, now let's see if we already returned this data |
2492 | * object by checking if it exists in the earlier | |
2493 | * traversed files. */ | |
2494 | found = false; | |
c1f906bd | 2495 | ORDERED_HASHMAP_FOREACH(of, j->files, i) { |
3c1668da LP |
2496 | Object *oo; |
2497 | uint64_t op; | |
2498 | ||
2499 | if (of == j->unique_file) | |
2500 | break; | |
2501 | ||
2502 | /* Skip this file it didn't have any fields | |
2503 | * indexed */ | |
2504 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2505 | le64toh(of->header->n_fields) <= 0) | |
2506 | continue; | |
2507 | ||
2508 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2509 | if (r < 0) | |
2510 | return r; | |
2511 | ||
2512 | if (r > 0) | |
2513 | found = true; | |
2514 | } | |
2515 | ||
06cc69d4 JJ |
2516 | if (found) |
2517 | continue; | |
2518 | ||
93b73b06 | 2519 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2520 | if (r < 0) |
2521 | return r; | |
2522 | ||
2523 | return 1; | |
2524 | } | |
2525 | } | |
2526 | ||
115646c7 | 2527 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2528 | if (!j) |
2529 | return; | |
2530 | ||
2531 | j->unique_file = NULL; | |
2532 | j->unique_offset = 0; | |
360af4cf | 2533 | j->unique_file_lost = false; |
3c1668da | 2534 | } |
85210bff LP |
2535 | |
2536 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
1ae464e0 TA |
2537 | assert_return(j, -EINVAL); |
2538 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2539 | |
2540 | return !j->on_network; | |
2541 | } | |
d4205751 LP |
2542 | |
2543 | static char *lookup_field(const char *field, void *userdata) { | |
2544 | sd_journal *j = userdata; | |
2545 | const void *data; | |
2546 | size_t size, d; | |
2547 | int r; | |
2548 | ||
2549 | assert(field); | |
2550 | assert(j); | |
2551 | ||
2552 | r = sd_journal_get_data(j, field, &data, &size); | |
2553 | if (r < 0 || | |
2554 | size > REPLACE_VAR_MAX) | |
2555 | return strdup(field); | |
2556 | ||
2557 | d = strlen(field) + 1; | |
2558 | ||
2559 | return strndup((const char*) data + d, size - d); | |
2560 | } | |
2561 | ||
2562 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2563 | const void *data; | |
2564 | size_t size; | |
2565 | sd_id128_t id; | |
2566 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2567 | char *t; | |
2568 | int r; | |
2569 | ||
1ae464e0 TA |
2570 | assert_return(j, -EINVAL); |
2571 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2572 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2573 | |
2574 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2575 | if (r < 0) | |
2576 | return r; | |
2577 | ||
2578 | cid = strndup((const char*) data + 11, size - 11); | |
2579 | if (!cid) | |
2580 | return -ENOMEM; | |
2581 | ||
2582 | r = sd_id128_from_string(cid, &id); | |
2583 | if (r < 0) | |
2584 | return r; | |
2585 | ||
844ec79b | 2586 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2587 | if (r < 0) |
2588 | return r; | |
2589 | ||
2590 | t = replace_var(text, lookup_field, j); | |
2591 | if (!t) | |
2592 | return -ENOMEM; | |
2593 | ||
2594 | *ret = t; | |
2595 | return 0; | |
2596 | } | |
8f1e860f LP |
2597 | |
2598 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2599 | assert_return(ret, -EINVAL); |
8f1e860f | 2600 | |
844ec79b | 2601 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2602 | } |
93b73b06 LP |
2603 | |
2604 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2605 | assert_return(j, -EINVAL); |
2606 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2607 | |
2608 | j->data_threshold = sz; | |
2609 | return 0; | |
2610 | } | |
2611 | ||
2612 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2613 | assert_return(j, -EINVAL); |
2614 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2615 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2616 | |
2617 | *sz = j->data_threshold; | |
2618 | return 0; | |
2619 | } |